Power charging device with charge saturation disconnector through electromagnetic force release

• US 8,269,454 B2
• Filed: 10/09/2009
• Issued: 09/18/2012
• Est. Priority Date: 10/09/2009
• Status: Active Grant

• Current Assignee: Tai-Her Yang
• Original Assignee: Tai-Her Yang
• Inventors: Yang, Tai-Her
• Primary Examiner(s): TSO, EDWARD H
• Application Number:
  US12/576,281
• Publication Number:
  US 20110084649A1
• Time in Patent Office: 1,075 Days
• Field of Search: 320/107, 320/111, 320/114, 200/16.B, 200/16.C, 439/353
• US Class Current: 320/107
• CPC Class Codes: H02J 7/0042 characterised by the mechanical construction

Abstract

A power charging device with charge saturation disconnection through electromagnetic force release is formed by a charging power supply, charging control device, a magnetic actuator conductive device, power excitation windings, a rechargeable discharge device, and various detection devices provided for detection of the charge situation of the rechargeable discharge device.

Claims

1. A power charging device with a charge saturation disconnector utilizing electromagnetic force release, which is formed by a charging power supply, a charging control device, a magnetic actuator conductive device, power excitation windings, a rechargeable discharge device, and a charge state detection device for detection of the charge situation of the rechargeable discharge device;

in which the power charging device with charge saturation disconnector utilizing electromagnetic force release supplies power from the charging power supply (101) to the charging control device (102), and then under the control of the charging control device (102), transmits the power to the magnetic actuator conductive device (110) for charging the rechargeable discharge device (104), which has been clamped by conductive device (112) installed within the magnetic actuator conductive device (110), wherein;

the charging control device (102) is formed by electromechanical or solid state electronic elements including a microprocessor and software, for receiving power input from the charging power supply (101) to output and control a charging voltage and current supplied to the rechargeable discharge device (104), and receiving a signal from the charging state detection device (107) to control the excitation timing of the power excitation windings (103);

wherein the charging control device (102) is a single circuit device or combines with the power supply (101) to be an integrated structure;

power excitation windings (103) are formed by elements or a device which converts input power energy to magnetic energy, and installed within the magnetic actuator conductive device (110), or placed at a position where the power excitation windings (103) interact with the magnetic actuator conductive device (110);

wherein the power excitation windings (103) are directly controlled by the charging state detection device (107) or by the charging control device (102) to be in a conductive excitation state or to disconnect to displace the magnetic driving structure (111) for releasing the rechargeable discharge device (104) clamped by the conductive device (112) of the magnetic actuator conductive device (110), the rechargeable discharge device (104) being further disconnected by at least one disconnection force provided by a release structural unit (1060), by gravity displacement, by a prestressing device operates by magnetic force, current force, or mechanical force, by a prestressing spring, or by an electromagnetic driving transposition mechanism;

wherein by means of said at least one disconnection force, at least one electrode side of the rechargeable discharge device (104) disconnects from the conductive device (112) to stop the charging;

the rechargeable discharge device (104) and conductive device (112) of the magnetic actuator conductive device (110) have a relative position relationship such that the rechargeable discharge device (104) is clamped by the conductive device (112) when the rechargeable discharge device (104) is installed in the conductive device, and both the rechargeable discharge device and conductive device present a conductive state with a same polarity for receiving charging energy; and

charging state detection device (107) is installed in at least one of the following positions;

within the rechargeable discharge device (104);

within the near rechargeable discharge device (104);

in a position linking the electrode side of the rechargeable discharge device (104); and

in a position linking the output side of the charging power supply of the charging control device (102) to transmit the charging state detection signal;

wherein the charging state detection device (107) of the rechargeable discharge device (104) includes one of the following detection devices;

a) a terminal voltage detection device installed at positive and negative electrodes of the charging control device (102) or at positive and negative electrodes of the rechargeable discharge device (104), so as to detect a terminal voltage signal of the rechargeable discharge device (104) when the rechargeable discharge device (104) is charged, for determining the charge saturation state of the rechargeable discharge device (104);

b) a detection circuit for detecting a suddenly decreased charge saturation voltage that occurs when the rechargeable discharge device (104) is charge saturated and the terminal voltage decreases suddenly;

the detection circuit being installed at positive and negative electrodes of the charging control device (102) or at positive and negative electrodes of the rechargeable discharge device (104);

c) a charge current detection circuit, which provides a signal of current value when the charge current decreases at charge saturation;

d) formed by thermal switch device, which occurs response of switch function when the temperature of the rechargeable discharge device (104) in charge saturation raises to the set value;

e) an element with a coefficient of resistance related to positive or negative temperature, which undergoes a change in relative resistance value when the temperature of the rechargeable discharge device (104) in charge saturation rises to a set value;

f) an internal resistance measurement circuit, which detects a relative resistance value when an internal resistance of the rechargeable discharge device (104) in charge saturation undergoes a relative change; and

g) other methods and devices which detect that the rechargeable discharge device (104) in charge saturation; and

wherein when the rechargeable discharge device (104) is charge saturated, at least one of the following operations is performed;

a) the power excitation windings (103) are directly controlled by the charge saturation detection device to be conductive or disconnect to cause the magnetic driving structure (111) to be displaced for releasing the rechargeable discharge device (104) clamped by the conductive device (112);

b) a signal is transmitted from the charge saturation detection device (107) to the charging control device (102) to control the power excitation windings (103) to be conductive or disconnected to cause displacement of the magnetic driving structure (111) for releasing the rechargeable discharge device (104) clamped by the conductive device (112);

c) a signal from the charge saturation detection device (107) is transmitted to the charging control device (102), and the charging control device (102) performs a trickling charge to the rechargeable discharge device (104) for a set time delay, and then the charging control device (102) is driven to control the power excitation windings (103) to be conductive or disconnect to cause the magnetic driving structure (111) to be displaced for releasing the rechargeable discharge device (104) clamped by the conductive device (112);

d) the signal of the charge saturation detection device (107) is transmitted to the charging control device (102) to reduce the charge current to the rechargeable discharge device (104) while waiting for the detection charge saturation signal of the charge saturation detection device (107), the charge saturation signal further driving the charging control device (102) to control the power excitation windings (103) to be conductive or disconnect cause the magnetic driving structure (111) to be displaced for releasing the rechargeable discharge device (104) clamped by the conductive device (112) to implement two-stage charging; and

e) the detection charge saturation signal of the charging state detection device (107) repeatedly controls the charging control device (102) to gradually reduce the charge current to the rechargeable discharge device (104), and finally the charging control device (102) is controlled to drive the power excitation windings (103) to be conductive or disconnect and cause the magnetic driving structure (111) to be displaced for releasing the rechargeable discharge device (104) clamped by the conductive device (112).

2. The power charging device with charge saturation disconnector through electromagnetic force release as claimed in claim 1, wherein when the power charging device with charge saturation disconnector through electromagnetic force release is charge saturated, release of the rechargeable discharge device (104) and termination of charging by the conductive device (112) of the magnetic actuator conductive device (110) is accomplished in one of the following ways:

a) when the state of the magnetic actuator conductive device (110) changes from clamping to releasing, at least one electrode side of the rechargeable discharge device (104) disconnects from the conductive device (112) of the magnetic actuator conductive device (110) through gravity to stop charging; and

/or

b) a prestressing spring (106) is pressurized to be in a prestressed state when the rechargeable discharge device (104) is placed in the conductive device (112), and when the rechargeable discharge device (104) is charge saturated, the conductive device (112) of the magnetic actuator conductive device (110) releases the rechargeable discharge device (104) through the prestressing of the prestressing spring (106) to cause at least one electrode side of the rechargeable discharge device (104) to be pushed away from the conductive device (112) of the magnetic actuator conductive device (110) along the direction of the prestressing of the prestressing spring (106) to stop charging;

wherein the pushed direction is along the gravity direction of the rechargeable discharge device (104) itself, the anti-gravity direction of the rechargeable discharge device (104) itself, or another direction;

c) when the rechargeable discharge device (104) is charge saturated, at least one electrode side of the rechargeable discharge device (104) is pushed to disconnect from the conductive device (112) of the magnetic actuator conductive device (110) through the thrust of a electromagnetic driving transposition mechanism (115) along the gravity direction of the rechargeable discharge device (104) itself, the anti-gravity direction of the rechargeable discharge device (104) itself, or another direction.

3. The power charging device with charge saturation disconnector through electromagnetic force release as claimed in claim 1, wherein the conductive device (112) is installed for coupling with the conductive structure installed on one side of the rechargeable discharge device (104), and a clamping structure (229) controlled by the magnetic actuator conductive device (110) is installed for clamping the rechargeable discharge device (104) when the rechargeable discharge device (104) is placed in the clamping structure (229).

4. The power charging device with charge saturation disconnector through electromagnetic force release as claimed in claim 1, wherein the magnetic actuator conductive device (110) is powered by excitation to cause at least one electrode side of the rechargeable discharge device (104) to disconnect from the magnetic actuator conductive device (110) to stop charging and

rechargeable discharge device (104) is formed by a rechargeable alkaline battery, rechargeable discharge battery, ultracapacitor, or capacitor.

5. The power charging device with charge saturation disconnector through electromagnetic force release as claimed in claim 1, wherein the conductive device (112) is installed for coupling with the conductive structure installed on one side of the rechargeable discharge device (104), and clamping structure (229) controlled by the magnetic actuator conductive device (110) is installed for clamping the rechargeable discharge device (104) when the rechargeable discharge device (104) is placed in the conductive device (112).

6. The power charging device with charge saturation disconnector through electromagnetic force release as claimed in claim 1, wherein the power excitation windings (103) drive the magnetic actuator conductive device (110) with the functionalities of prestressing release and magnetic clamping;

the rechargeable discharge device (104) is clamped by a pressurized clamping force when the rechargeable discharge device (104) is placed in the conductive device (112);

the charging control device (102) senses output of the charge current to the rechargeable discharge device (104), the charging control device (102) causes excitation of the power excitation windings (103) to attract the magnetic driving structure (111) and cause the conductive device (112) to pressurize for clamping the rechargeable discharge device (104) to prevent release of the rechargeable discharge device (104) from the conductive device (112), and the conductive device (112) transmits charging energy to the rechargeable discharge device (104);

wherein when the rechargeable discharge device (104) is charge saturated, the charging state detection device (107) detects and directly or through the charging control device (102) cuts off the current passing through the power excitation windings (103) to cause the conductive device (112) to release the clamping force on the rechargeable discharge device (104), and then the rechargeable discharge device (104) disconnects from the conductive device (112) to stop charging;

the disconnection being implemented by making use of gravity or the thrust of the prestressing spring (106).

7. The power charging device with charge saturation disconnector through electromagnetic force release as claimed in claim 6, wherein the conductive device (112) is installed for coupling with the conductive structure installed on one side of the rechargeable discharge device (104), and clamping structure (229) controlled by the magnetic actuator conductive device (110) is installed for clamping the rechargeable discharge device (104) when the rechargeable discharge device (104) is placed in the conductive device (112).

8. The power charging device with charge saturation disconnector through electromagnetic force release as claimed in claim 1, wherein the conductive device (112) of the magnetic actuator conductive device (110) is simultaneously driven by power excitation to cause prestressing of the conductive device (112) and to charge the rechargeable discharge device (104);

the conductive device (112) being driven by the power excitation windings (103) of the magnetic actuator conductive device (110) to release clamping to the rechargeable discharge device (104) to stop charging when charge saturation occurs.

9. The power charging device with charge saturation disconnector through electromagnetic force release as claimed in claim 8, wherein the conductive device (112) is installed for coupling with the conductive structure installed on one side of the rechargeable discharge device (104), and clamping structure (229) controlled by the magnetic actuator conductive device (110) is installed for clamping the rechargeable discharge device (104) when the rechargeable discharge device (104) is placed in the conductive structure (112).

10. The power charging device with charge saturation disconnector through electromagnetic force release as claimed in claim 1, wherein the conductive device (112) of the magnetic actuator conductive device (110) is driven by power excitation to make use of the excitation current passing through the power excitation windings (103) to drive the conductive device (112) to clamp and charge the rechargeable discharge device (104);

the power excitation to the power excitation windings (103) terminated to cause the conductive device (112) to release clamping of the rechargeable discharge device (104) to stop charging when charge saturation occurs.

11. The power charging device with charge saturation disconnector through electromagnetic force release as claimed in claim 10, wherein the conductive device (112) is installed for coupling with the conductive structure installed on one side of the rechargeable discharge device (104), and clamping structure (229) controlled by the magnetic actuator conductive device (110) is installed for clamping the rechargeable discharge device (104) when the rechargeable discharge device (104) is placed in the conductive device (112).

12. The power charging device with charge saturation disconnector through electromagnetic force release as claimed in claim 1, further comprising electromagnetic driving suction device (114), which is displaced upon being actuated through the charging control device (102) controlling the power excitation current passing through the power excitation windings (103) when the rechargeable discharge device (104) is charged, a space vacated by the displacement being used for installing the rechargeable discharge device (104);

wherein when the rechargeable discharge device (104) is charge saturated, the charging state detection device (107) detects and directly or through the charging control device (102) cuts off the power excitation current passing through the power excitation windings (103), and the prestressing spring (106) is driven to cause the electromagnetic driving suction device (114) to push the rechargeable discharge device (104) away from the conductive device (112) to stop charging;

wherein the electromagnetic driving suction device (114) is equipped with the power excitation windings (103) and the prestressing spring (106) to form an electromagnetic force driving and spring force reversion mechanism.

13. The power charging device with charge saturation disconnector through electromagnetic force release as claimed in claim 1, wherein the power charging device with charge saturation disconnector through electromagnetic force release further is arranged to provide a synchronous power switch function, in which a synchronous power switch is installed at a position for interacting with the magnetic actuator conductive device (110);

and wherein when the rechargeable discharge device (104) is placed in the conductive device (112) and the magnetic actuator conductive device (110) is forced to move to deform, the synchronous power switch is touched simultaneously to supply power to the rechargeable discharge device (104) for charging;

the synchronous power switch being formed by electromechanical or solid state switches characterized by at least one of the following;

the switch is triggered by mechanical displacement, photoelectric operation, pressure operation, acoustic operation, static electricity operation, manipulation of magnetic induction, operation of electromagnetic induction, and capacitive sensor operation, and a reed contact (126) is installed with the conductive device (112), or

a touch switch (117) is installed for simultaneously starting power when the rechargeable discharge device (104) is placed in the conductive device (112), and to simultaneously cut off power when the rechargeable discharge device (104) disconnects from the conductive device (112).

14. The power charging device with charge saturation disconnector through electromagnetic force release as claimed in claim 13, wherein the conductive device (112) is installed for coupling with the conductive structure installed on one side of the rechargeable discharge device (104), and clamping structure (229) controlled by the magnetic actuator conductive device (110) is installed for clamping the rechargeable discharge device (104) when the rechargeable discharge device (104) is placed in the conductive device (112);

and further the reed contact (126) is installed for forming a synchronous operation switch with the conductive device (112) for clamping the rechargeable discharge device (104) when the rechargeable discharge device (104) is placed in the conductive device (112);

or the conductive device (112) is installed for coupling with the conductive structure installed on one side of the rechargeable discharge device (104), and clamping structure (229) controlled by the magnetic actuator conductive device (110) is installed for clamping the rechargeable discharge device (104) when the rechargeable discharge device (104) is placed in the conductive device (112).

18. The power charging device with charge saturation disconnector through electromagnetic force release as claimed in claim 1, wherein the conductive device and the clamping structure are separate structures installed at different positions, the conductive device (112) for transmitting the charge power energy is installed against the direction for installing the conductive device (112), and the clamping structure (229) only has a clamping functionality for clamping the side of the rechargeable discharge device (104), and wherein when the rechargeable discharge device (104) is place in the conductive device (112), the charging power supply powers the rechargeable discharge device (104), and the power excitation windings (103) are excited to cause the electromagnetic actuator (124) to clamp the rechargeable discharge device (104);

and when the current passing through the power excitation windings (103) decreases or terminates, by means of the prestressing of the prestressing homing spring (116), the magnetic driving structure (111) and the conductive device (112) release the clamped rechargeable discharge device (104).

19. The power charging device with charge saturation disconnector through electromagnetic force release as claimed in claim 18, wherein the conductive device (112) is installed for coupling with the conductive structure installed on one side of the rechargeable discharge device (104), and the clamping structure (229) controlled by the magnetic actuator conductive device (110) is installed for clamping the rechargeable discharge device (104) when the rechargeable discharge device (104) is placed in the conductive device (112).

20. The power charging device with charge saturation disconnector through electromagnetic force release as claimed in claim 1, wherein the conductive device (112) is installed for coupling with the conductive structure installed on one side of the rechargeable discharge device (104), and a prestressing reed (108) is installed between the conductive device (112) and the rechargeable discharge device (104), wherein the prestressing reed (108) is an elastic structure and the prestressing, which is normally along a direction for pushing the rechargeable discharge device (104) away to stop charging, is less than a clamping force of the clamping structure (229), but more than a weight of the rechargeable discharge device (104);

the prestressing reed (108) being equipped with a relay conductive structure (1081) for transmitting the power energy of the positive and negative electrodes of the conductive device (112) to the positive and negative electrodes of the rechargeable discharge device (104), wherein when the prestressing reed (108) is made of insulative material, than the relay conductive structure (1081) is directly installed on the prestressing reed (108), and when the prestressing reed (108) is made of conductive material, than there an additional insulator is provided between the relay conductive structure (1081) and the prestressing reed (108); and

wherein when the rechargeable discharge device (104) is placed in the conductive device (112), through the operation of a press type boot structure (231), the clamping structure (229) controlled by the magnetic actuator conductive device (110) clamps the rechargeable discharge device (104), and forces the prestressing reed (108) to move, and then the power energy of the conductive device (112) is transmitted to the rechargeable discharge device (104) for charging via the relay conductive structure (1081) installed on the prestressing reed (108), and because the power excitation windings (103) is powered excitation, the clamping structure (229) clamps the rechargeable discharge device (104) continuously; and

when charge saturation occurs, the clamping structure (229) disconnects and releases the clamped rechargeable discharge device (104) by means of the prestressing of the prestressing reed (108) such that the rechargeable discharge device (104) disconnects from the conductive device (112) to stop charging.

21. The power charging device with charge saturation disconnector through electromagnetic force release as claimed in claim 1, wherein the electromagnetic driving transposition mechanism (115) is installed within the magnetic actuator conductive device (110) for pushing the rechargeable discharge device (104) away from the position of the magnetic actuator conductive device (110);

wherein when the rechargeable discharge device (104) is charge saturated, the power excitation windings (103) drive the electromagnetic driving transposition mechanism (115) for pushing the rechargeable discharge device (104) away from the magnetic actuator conductive device (110) in one of the following ways;

a) the power excitation windings (103) are directly controlled by the charge saturation detection device (107) to be conductive or disconnect to cause the magnetic driving structure (111) to be displaced, and the electromagnetic driving transposition mechanism (115) is driven simultaneously to push the rechargeable discharge device (104), and then the conductive device (112) of the magnetic actuator conductive device (110) releases the clamped rechargeable discharge device (104);

b) a signal of the charge saturation detection device (107) is transmitted to the charging control device (102) to control the power excitation windings (103) to be conductive or disconnect to cause the magnetic driving structure (111) to be displaced, and the electromagnetic driving transposition mechanism (115) is driven simultaneously to push the rechargeable discharge device (104), and then the conductive device (112) of the magnetic actuator conductive device (110) releases the clamped rechargeable discharge device (104);

c) the charging control device (102) performs trickling charge to the rechargeable discharge device (104) for a set time delay, and then the charging control device (102) is driven to control the power excitation windings (103) to be conductive or disconnect to cause the magnetic driving structure (111) to be displaced, and the electromagnetic driving transposition mechanism (115) is driven simultaneously to push the rechargeable discharge device (104), and then the conductive device (112) of the magnetic actuator conductive device (110) releases the clamped rechargeable discharge device (104);

d) a signal from the charge saturation detection device (107) is transmitted to the charging control device (102) to reduce the charge current to the rechargeable discharge device (104) while waiting for the detection charge saturation signal of the charge saturation detection device (107), further driving the charging control device (102) to control the power excitation windings (103) to be conductive or disconnect to cause the magnetic driving structure (111) to be displaced, and the electromagnetic driving transposition mechanism (115) is driven simultaneously to push the rechargeable discharge device (104), and then the conductive device (112) of the magnetic actuator conductive device (110) releases the clamped rechargeable discharge device (104) to implement two-stage charging; and

e) the detection charge saturation signal of the charging state detection device (107) repeatedly controls the charging control device (102) to gradually reduce the charge current to the rechargeable discharge device (104), and finally the charging control device (102) is controlled to drive the power excitation windings (103) to be conductive or disconnect to cause the magnetic driving structure (111) to be displaced for pushing the conductive device (112), and when the power excitation windings (103) are excited, the electromagnetic driving transposition mechanism (115) is driven simultaneously to push the rechargeable discharge device (104), and then at least one electrode side of the rechargeable discharge device (104) disconnects from the conductive device (112) to stop charging.

22. The power charging device with charge saturation disconnector through electromagnetic force release as claimed in claim 21, wherein the power charging device with charge saturation disconnector through electromagnetic force release further is arranged to provide a synchronous power switch function, in which a synchronous power switch is installed at a position for interacting with the magnetic actuator conductive device (110);

wherein when the rechargeable discharge device (104) is placed in the conductive device (112) and the magnetic actuator conductive device (110) is forced to move to deform, the synchronous power switch is touched simultaneously to make power supply to power the rechargeable discharge device (104) for charging;

the synchronous power switch being formed by electromechanical or solid state switches characterized by at least one of the following;

the switch is triggered by mechanical displacement, photoelectric operation, pressure operation, acoustic operation, static electricity operation, manipulation of magnetic induction, operation of electromagnetic induction, and capacitive sensor operation, and a reed contact (126) is installed with the conductive device (112), or a touch switch (117) is installed, for forming a conductive contact of the synchronous operational switch, and the installed position of the synchronous operational switch is at a position in which when the rechargeable discharge device (104) is placed in the conductive device (112), by means of the installation of the rechargeable discharge device (104), or the displacement of the reed of the magnetic actuator conductive device (110), the charging power supply is driven.

15. A power charging device with charge saturation disconnector through electromagnetic force release, wherein a magnetic circuit with iron-core (127) of the magnetic actuator conductive device (110) is driven by means of the charge current passing through the power excitation windings (103), and then the conductive device (112) clamps and charges the rechargeable discharge device (104);

and wherein the charge current terminates or decreases when charge saturation occurs, and then the magnetic actuator conductive device (110) and the conductive device (112) release the clamped rechargeable discharge device (104) for disconnecting from the conductive device (112) to stop charging,

wherein magnetic actuator conductive device (110);

is equipped with the conductive device (112) connecting with the charging control device (102) and an electromagnetic actuator (124) at the space for installing the rechargeable discharge device (104);

the electromagnetic actuator (124) includes the power excitation windings (103), the magnetic circuit with iron-core (127), the magnetic driving structure (111), the magnetic circuit with iron-core (127), the conductive device (112), and a prestressing spring (116), for attracting the magnetic driving structure (111) when the power excitation windings (103) is powered, to cause the conductive device (112) which is integrated with the magnetic driving structure (111) to clamp and charge the rechargeable discharge device (104), and when the current passing through the power excitation windings (103) decreases or terminates, the magnetic driving structure (111) returns to the original position through the prestressing of the prestressing homing spring (116), and then the conductive device (112) releases the clamped rechargeable discharge device (104);

wherein a parallel shunt circuit device (120) is installed if not all charge current is to be utilized as the power excitation current to the magnetic actuator device (110), the parallel shunt circuit device being formed by electromechanical or electronic circuit elements, or solid state power components, and parallel to two sides of the power excitation windings (103), for controlling the value of the current passing through the power excitation windings (103), and further controlling the disconnecting timing for the magnetic actuator conductive device (110);

wherein when the rechargeable discharge device (104) is placed in the conductive device (112) to cause charge current to pass through the power excitation windings (103), the electromagnetic actuator (124) is attracted by excitation to drive the magnetic driving structure (111) of the magnetic actuator conductive device (110) and the conductive device (112) integrated with the magnetic driving structure (111) to produce the clamping force and charging current; and

wherein when the rechargeable discharge device (104) is charged, the voltage thereof gradually rises, and then the charge current decreases and further causes the current passing through the power excitation windings (103) to decrease, or when the current passing through the power excitation windings (103) terminates through the control of the charging control device (102), the excitation of the electromagnetic actuator (124) is terminated, and by means of the prestressing of provided bathe prestressing spring (116), the magnetic driving structure (111) and the conductive device (112) integrated with the magnetic driving structure (111) release the clamped rechargeable discharge device (104).

16. The power charging device with charge saturation disconnector through electromagnetic force release as claimed in claim 15, wherein the prestressing spring (106) is installed at the space within the conductive device (112) for installing the rechargeable discharge device (104), wherein when the current passing through the power excitation windings (103) decreases to the threshold limit value or terminates, the magnetic driving structure (111) and the conductive device (112) integrated with the magnetic driving structure (111) release the clamped rechargeable discharge device (104), and the prestressing spring (106) pushes the rechargeable discharge device (104) to disconnect from the conductive device (112).

17. The power charging device with charge saturation disconnector through electromagnetic force release as claimed in claim 15, wherein a pitch between two conductive devices (112) as the positive and negative electrodes is more than a pitch between two electrodes of the rechargeable discharge device (104) before charging, but after the rechargeable discharge device (104) is placed in between the two conductive devices (112), the two conductive devices (112) are pushed close to contact with the positive and negative electrodes of the rechargeable discharge device (104), and then the rechargeable discharge device (104) is charged by the charging power supply via the two conductive devices (112), and the power excitation windings (103) are powered excitation simultaneously through the charge current to attract the magnetic driving structure (111), and then the conductive device (112) which is integrated with the magnetic driving structure (111) clamps and charges to the rechargeable discharge device (104) continuously,

wherein after a positioning ring structure (105) is placed in the rechargeable discharge device (104), press type boot structure (231) is driven by external force, and the two conductive devices (112) are pushed close to conduct with the positive and negative electrodes of the rechargeable discharge device (104), and then the charging power is supplied to the rechargeable discharge device (104) via the two conductive devices (112), and the power excitation windings (103) are excited simultaneously, so that the electromagnetic actuator (124) has an effect to attract the magnetic driving structure (111), and the conductive device (112) is forced to clamp the rechargeable discharge device (104) continuously, and to charge the rechargeable discharge device (104);

and wherein when the current passing through the power excitation windings (103) decreases to the threshold limit value or terminates, by means of the prestressing of prestressing spring (116), the magnetic driving structure (111) and the conductive device (112) which is integrated with the magnetic driving structure (111) release the clamped rechargeable discharge device (104) and stop charging.