MOBILE POWER SUPPLY

• US 20180062415A1
• Filed: 01/23/2017
• Published: 03/01/2018
• Est. Priority Date: 08/24/2016
• Status: Active Grant

• Current Assignee: Tianjin Synergy Groups Co., Ltd.
• Original Assignee: Tianjin Synergy Groups Co., Ltd.
• Inventors: Chen, Penghui, Yu, Xiaoshuang
• Granted Patent: US 10,116,153 B2
• Time in Patent Office: Days
• CPC Class Codes: H02J 2207/20 Charging or discharging characterised by the power electronics converter
• CPC Class Codes: H02J 50/10 using inductive coupling
• CPC Class Codes: H02J 7/00 Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
• CPC Class Codes: H02J 7/0013 acting upon several batteries simultaneously or sequentially H02J7/1423 takes precedence
• CPC Class Codes: H02J 7/0045 concerning the insertion or the connection of the batteries
• CPC Class Codes: H02J 7/0047 with monitoring or indicating devices or circuits
• CPC Class Codes: H02J 7/342 The other DC source being a battery actively interacting with the first one, i.e. battery to battery charging with circuits for polarity protection H02J7/0034

Abstract

A mobile power supply may include a charging and discharging interface, a charging and discharging circuit, a central processor, and a battery pack. The charging and discharging circuit may be configured to adjust a voltage inputted to the battery pack to charge the battery pack when the voltage inputted to the battery pack is not matched with a voltage of the battery pack, or configured to adjust a voltage output to the electronic device to charge the electronic device when the voltage outputted to the electronic device is not matched with a rated voltage of the electronic device. The central processor may be configured to control the charging and discharging circuit to charge the battery pack, supply power to or charge the electronic device.

Claims

1. A mobile power supply, comprising:

a charging and discharging interface, a charging and discharging circuit, a central processor and a battery pack,

wherein a first end of the charging and discharging interface is connected to a first end of the charging and discharging circuit, and the charging and discharging interface is configured to connect one of an external charging power supply and an electronic device requiring to be charged or supplied with power;

a second end of the charging and discharging circuit is connected to an anode of the battery pack, and the charging and discharging circuit is configured to perform one of the following;

adjusting a voltage inputted to the battery pack by the charging power supply to charge the battery pack when the voltage inputted to the battery pack is not matched with a voltage of the battery pack, and

adjusting a voltage output to the electronic device by the battery pack to supply power to or charge the electronic device when the voltage outputted to the electronic device is not matched with a rated voltage of the electronic device;

a cathode of the battery pack is connected to a third end of the charging and discharging circuit;

and a fourth end of the charging and discharging circuit is connected to a second end of the charging and discharging interface; and

the central processor is connected to a fifth end of the charging and discharging circuit, and configured to control the charging and discharging circuit to perform one of charging the battery pack, supplying power to the electronic device, and charging the electronic device.

2. The mobile power supply according to claim 1, further comprising a cooling device and a temperature sensor,

wherein the cooling device is configured to cool the mobile power supply;

the temperature sensor is connected to the central processor, and configured to detect an internal temperature of the mobile power supply and transmit detected temperature signal to the central processor; and

the central processor is further configured to control the cooling device according to the temperature signal received from the temperature sensor.

3. The mobile power supply according to claim 2, wherein the cooling device comprises a cooling fan and a controller,

wherein the controller is connected to the central processor, and configured to receive a rotating speed control signal transmitted from the central processor and control a rotating speed of the cooling fan according to the rotating speed control signal.

4. The mobile power supply according to claim 3, wherein the charging and discharging circuit is integrated on a circuit board, and the cooing device further comprises a heat-conducting rubber pad;

and

the heat-conducting rubber pad is provided on the battery pack and the circuit board.

5. The mobile power supply according to claim 1, wherein the charging and discharging circuit comprises a buck-boost circuit;

the buck-boost circuit comprises a first transistor, a second transistor, a third transistor, a fourth transistor, a first gate driver, a second gate driver and an inductor;

a drain electrode of the first transistor is connected to the first end of the charging and discharging interface, a source electrode of the first transistor is connected to a first end of the inductor and a drain electrode of the second transistor respectively, and a gate electrode of the first transistor is connected to a first output end of the first gate driver;

a source electrode of the second transistor is connected to the cathode of the battery pack, and a gate electrode of the second transistor is connected to a second output end of the first gate driver;

a second end of the inductor is connected to a source electrode of the third transistor and a drain electrode of the fourth transistor respectively;

a drain electrode of the third transistor is connected to the anode of the battery pack, and a gate electrode of the third transistor is connected to a first output end of the second gate driver;

a source electrode of the fourth transistor is connected to the cathode of the battery pack, and a gate electrode of the fourth transistor is connected to a second output end of the second gate driver;

the cathode of the battery pack is grounded; and

the central processor is connected to an input end of the first gate driver and an input end of the second gate driver respectively, and further configured to control, through the first gate driver, one of turn-on and turn-off of the first transistor and the second transistor, and control, through the second gate driver, one of turn-on and turn-off of the third transistor and the fourth transistor.

6. The mobile power supply according to claim 5, wherein the charging and discharging circuit further comprises a control circuit;

the control circuit comprises a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a fifth transistor, a sixth transistor and a third gate driver;

a first end of the first resistor is connected to the first end of the charging and discharging interface, and a second end of the first resistor is connected to a first end of the second resistor;

a second end of the second resistor is connected to a first end of the third resistor and the cathode of the battery pack respectively; and

a second end of the third resistor is connected to the second end of the charging and discharging interface;

each of the fifth transistor and the sixth transistor is arranged between the first end of the charging and discharging interface and the drain electrode of the first transistor;

a drain electrode of the fifth transistor is connected to the first end of the charging and discharging interface and the first end of the first resistor respectively, and a source electrode of the fifth transistor is connected to a source electrode of the sixth transistor; and

a drain electrode of the sixth transistor is connected to the drain electrode of the first transistor;

an input end of the third gate driver is connected to the central processor, and an output end of the third gate driver is connected to a gate electrode of the fifth transistor and a gate electrode of the sixth transistor respectively;

a first end of the fourth resistor is connected to the anode of the battery pack, and a second end thereof is connected to a first end of the fifth resistor; and

a second end of the fifth resistor is connected to the cathode of the battery pack and the second end of the second resistor respectively;

the central processor is connected to the second end of the first resistor, the second end of the third resistor and the second end of the fourth resistor respectively, and further configured to collect a first voltage signal at the second end of the first resistor, a current signal at the second end of the third resistor and a second voltage signal at the second end of the fourth resistor, and control the third gate driver according to the first voltage signal, the current signal and the second voltage signal when the battery pack is charged by the charging power supply, so as to control on-off of the fifth transistor and the sixth transistor; and

the central processor is further configured to collect a second voltage signal at the second end of the fourth resistor and control the third gate driver according to the second voltage signal when the battery pack supplies power to or charges the electronic device, so as to control on-off of the sixth transistor and the fifth transistor.

7. The mobile power supply according to claim 6, further comprising an amplifier, which is arranged between the second end of the charging and discharging interface and the central processor, and configured to amplify the current signal.

8. The mobile power supply according to claim 6, wherein the charging and discharging circuit further comprises a voltage stabilizing component;

the voltage stabilizing component comprises a first capacitor and a second capacitor;

a first end of the first capacitor is connected to the drain electrode of the sixth transistor and the drain electrode of the first transistor respectively, and a second end of the first capacitor is connected to the cathode of the battery pack; and

a first end of the second capacitor is connected to the anode of the battery pack, the first end of the fourth resistor and the drain electrode of the third transistor respectively; and

a second end of the second capacitor is connected to the cathode of the battery pack.

9. The mobile power supply according to claim 1, wherein the central processor is connected to a third end of the charging and discharging interface, and configured to acquire parameter information of the electronic device and identify a category of the electronic device according to the parameter information when the external electronic device is supplied with power or charged by the battery pack.

10. The mobile power supply according to claim 1, further comprising a direct current (DC) output circuit, a universal serial bus (USB) interface, an inverting circuit, an alternating current/direct current (AC/DC) interface and a control apparatus;

an input end of the DC output circuit is connected to the battery pack, and an output end of the DC output circuit is connected to the USB interface;

an input end of the inverting circuit is connected to the battery pack, and an output end of the inverting circuit is connected to the AC/DC interface;

the central processor is connected to the control apparatus, the DC output current and the inverting circuit respectively, and configured to receive a current output instruction to control the mobile power supply to output a direct current or an alternating currentted; and

the control apparatus is configured to input the current output instruction.

11. The mobile power supply according to claim 1, further comprising an Organic Light-Emitting Diode (OLED) display screen provided on a housing of the mobile power supply, wherein the OLED display screen is connected to the central processor, and configured to display residual electricity of the mobile power supply, charging power, discharging power, internal temperature and residual run time in a current charging and discharging state.

12. The mobile power supply according to claim 1, further comprising:

a wireless charging manager and a wireless charging transmitter,

wherein the wireless charging transmitter is connected to the battery pack, and configured to transmit energy outputted by the battery pack to the electronic device in a form of electromagnetic wave; and

the wireless charging manager is connected to the central processor and the wireless charging transmitter respectively, and configured to receive a control instruction transmitted by the central processor and control the wireless charging transmitter according to the control instruction.