| CPC H02J 7/00712 (2020.01) [H02J 7/00036 (2020.01); H02J 7/0045 (2013.01); H02J 7/0063 (2013.01); H02J 7/06 (2013.01); H02J 2207/20 (2020.01)] | 13 Claims |
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1. A battery power supply adjusting circuit, configured to charge a dual-cell battery, wherein the battery power supply adjusting circuit comprises a Buck circuit module, a first charge pump circuit module, a second charge pump circuit module, a battery charging and discharging control module, and a system power supply module;
wherein an input of the Buck circuit module and an input of the first charge pump circuit module are externally connected to an AC/DC adapter respectively, a first output of the Buck circuit module is connected to the second charge pump circuit module, a second output of the Buck circuit module is connected to the system power supply module, the battery charging and discharging control module is connected to a controlled end of the Buck circuit module, a controlled end of the first charge pump circuit module, a controlled end of the second charge pump circuit module and the dual-cell battery, the first charge pump circuit module and the second charge pump circuit module are respectively connected to the dual-cell battery, and the second charge pump circuit module is further connected to the system power supply module;
wherein the battery charging and discharging control module is a control module for controlling the Buck circuit module, the first charge pump circuit module, and the second charge pump circuit module to operate during charging and discharging;
wherein the Buck circuit module operates in a trickle charging phase, a constant-voltage charging phase, and a charging cut-off phase; wherein the Buck circuit module is configured to supply power to the system power supply module, and wherein the Buck circuit module charges the dual-cell battery after being boosted by the second charge pump circuit module;
wherein the first charge pump circuit module operates in a constant-current charging phase, and is a circuit module for controlling an output current of the first charge pump circuit module, or making an output voltage of the first charge pump circuit module smaller than an input voltage;
wherein the second charge pump circuit module operates during discharging, and is a circuit module for converting a discharging voltage of the dual-cell battery into a voltage suitable for the system power supply module;
wherein a first charge pump circuit sub-module of the first charge pump circuit module comprises a fourth capacitor, a fifth capacitor, a sixth capacitor, a seventh capacitor, a seventh transistor, an eighth transistor, a ninth transistor, a tenth transistor, an eleventh transistor, a twelfth transistor, and a thirteenth transistor;
wherein one end of the fourth capacitor and an input of the seventh transistor are both connected to the AC/DC adapter, wherein the other end of the fourth capacitor is grounded, wherein an output of the seventh transistor and an input of the eighth transistor are both connected to one end of the fifth capacitor, wherein the other end of the fifth capacitor is connected to an input of the ninth transistor and an input of the tenth transistor, wherein an output of the ninth transistor and an output of the thirteenth transistor are both grounded, wherein an input of the thirteenth transistor and an output of the twelfth transistor are both connected to one end of the sixth capacitor, wherein the other end of the sixth capacitor is connected to an output of the tenth transistor and an output of the eleventh transistor, wherein an output of the eighth transistor, an input of the eleventh transistor, an input of the twelfth transistor, and one end of the seventh capacitor are all connected to the dual-cell battery, and the other end of the seventh capacitor is grounded;
wherein during a series connection phase of the capacitors, the seventh transistor, the tenth transistor, and the twelfth transistor are turned on, and the eighth transistor, the ninth transistor, the eleventh transistor, and the thirteenth transistor are turned off; and
wherein during a parallel connection phase of the capacitors, the eighth transistor, the ninth transistor, the eleventh transistor, and the thirteenth transistor are turned on, and the seventh transistor, the tenth transistor, and the twelfth transistor are turned off.
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