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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
First Claim
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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).

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