CN-122026565-A - Dual-cell control circuit, control method and electronic equipment

CN122026565ACN 122026565 ACN122026565 ACN 122026565ACN-122026565-A

Abstract

The application provides a double-battery-core control circuit, a control method and electronic equipment, wherein the circuit comprises a power regulating circuit and a charging circuit, the input end of the charging circuit is used for being connected with a charging power supply, the first output end of the charging circuit is connected with the input end of the power regulating circuit and the first end of a first battery core, the output end of the power regulating circuit and the second end of the first battery core are connected with the first end of a second battery core, the second end of the second battery core is grounded, the rated charging current of the first battery core is smaller than or equal to the rated charging current of the second battery core, and under the condition that the input end of the charging circuit is connected with the charging power supply, the charging circuit is used for outputting the charging current to the power regulating circuit and the first battery core to enable the charging current of the first battery core to reach the rated charging current range, and the power regulating circuit is used for providing the charging current to the second battery core to enable the charging current of the second battery core to reach the rated charging current range. The first battery cell and the second battery cell are charged in series, so that the problem of serious heating during parallel charging is solved.

Inventors

CHEN RUN
ZHANG CHENGXU
ZHOU HAIBIN
ZHAO YAO

Assignees

荣耀终端股份有限公司

Dates

Publication Date: 20260512
Application Date: 20241108

Claims (12)

1. The double-cell control circuit is characterized by comprising a power regulating circuit and a charging circuit; The first output end of the charging circuit is connected with the input end of the power regulating circuit and the first end of the first electric core; The output end of the power regulating circuit and the second end of the first electric core are connected with the first end of the second electric core, and the second end of the second electric core is grounded; Under the condition that the input end of the charging circuit is connected with the charging power supply, the charging circuit is used for outputting current to the power regulating circuit and the first battery cell, so that the charging current of the first battery cell reaches the rated charging current range of the first battery cell; the power regulating circuit is used for being connected with the first electric core in parallel to provide charging current for the second electric core, so that the charging current of the second electric core reaches the rated charging current range of the second electric core.
2. The circuit of claim 1, further comprising a controller and a first switching tube; The first end of the first switch tube is connected with the output end of the power regulating circuit and the second end of the first electric core; And under the condition that the input end of the charging circuit is connected with the charging power supply, the controller is used for controlling the first switching tube to be closed and controlling the power regulating circuit to work so as to enable the first battery cell and the second battery cell to be charged in series.
3. The circuit of claim 2, further comprising a second switching tube; the first end of the second switching tube is connected with the output end of the power regulating circuit and the second end of the first battery cell, and the second end of the second switching tube is grounded; The controller is used for controlling the second switching tube to be opened under the condition of controlling the first switching tube to be closed.
4. The circuit of claim 3, wherein the charging circuit comprises a first charging circuit and a second charging circuit; The input end of the first charging circuit and the input end of the second charging circuit are used for being connected with the output end of the charging circuit in parallel, the output end of the first charging circuit is connected with the first output end of the charging circuit, the output end of the second charging circuit is connected with the second output end of the charging circuit, and the second output end of the charging circuit is connected with the first end of the second cell; and the controller is used for controlling the second charging circuit to stop working under the condition of controlling the first switching tube to be closed.
5. The circuit of claim 4, wherein the charging circuit comprises a current limiting circuit; Two ends of the current limiting circuit are respectively connected with a first output end and a second output end of the charging circuit; the controller is used for controlling the current limiting circuit to be opened under the condition of controlling the first switching tube to be closed.
6. The circuit of claim 5, wherein when the input end of the first charging circuit is connected to the charging power supply, the controller is further configured to control the power adjustment circuit to stop working, control the first switching tube to be disconnected, control the first charging circuit and the second charging circuit to work together, and control the second switching tube and the current limiting circuit to be turned on when it is detected that the electric quantity of the first battery cell is charged in series to a first preset electric quantity or the electric quantity of the second battery cell is charged in series to a second preset electric quantity, so that the first battery cell and the second battery cell are charged in parallel.
7. The circuit of claim 6, wherein the dual-cell control circuit further comprises a power management circuit, a first input terminal of the power management circuit is connected to an input terminal of the charging circuit, a second input terminal of the power management circuit is connected to a first output terminal or a second output terminal of the charging circuit, and an output terminal of the power management circuit is connected to an electrical device; And under the condition that the input end of the charging circuit is not connected with the charging power supply, the controller is used for controlling the power regulating circuit to stop working, controlling the first switching tube to be opened, controlling the second switching tube to be closed and controlling the current limiting circuit to be conducted, so that the first battery cell and the second battery cell are connected in parallel to supply power for the electric appliance.
8. The circuit of any of claims 1-7, wherein the power conditioning circuit is a three-level buck circuit.
9. The circuit of any of claims 1-7, wherein a signal detection terminal of the power conditioning circuit is connected to an input terminal of the first charging circuit; the power regulating circuit is used for stopping working under the condition that no input is detected at the input end of the charging circuit.
10. The control method of the double-cell control circuit is characterized by being applied to the double-cell control circuit, wherein the double-cell control circuit comprises a power adjusting circuit and a charging circuit; The first output end of the charging circuit is connected with the input end of the power regulating circuit and the first end of the first electric core; The output end of the power regulating circuit and the second end of the first electric core are connected with the first end of the second electric core, and the second end of the second electric core is grounded; the method comprises the following steps: Under the condition that the input end of the charging circuit is connected with the charging power supply, the charging circuit is controlled to convert the power supply output by the charging power supply, and charging current is output to the power regulating circuit and the first battery cell through the first output end of the charging circuit, so that the charging current of the first battery cell reaches the rated charging current range of the first battery cell; And the power regulating circuit is controlled to convert the current output by the first output end of the charging circuit, and the charging current is provided for the second battery core in parallel through the power regulating current and the first battery core, so that the charging current of the second battery core reaches the rated charging current range of the second battery core.
11. The three-cell control circuit is characterized by comprising a first power regulating circuit, a second power regulating circuit and a third charging circuit; the first output end of the third charging circuit is connected with the input end of the first power regulating circuit and the first end of the third battery cell; The output end of the first power regulating circuit and the second end of the third electric core are connected with the input end of the second power regulating circuit and the first end of the fourth electric core; The rated charging current of the third electric core is smaller than or equal to the rated charging current of the fourth electric core, and the rated charging current of the fourth electric core is smaller than or equal to the rated charging current of the fifth electric core; When the input end of the third charging circuit is connected with the charging power supply, the third charging circuit is used for outputting current to the first power regulating circuit and the third battery core, so that the charging current of the third battery core reaches the rated charging current range of the third battery core, the first power regulating circuit is used for being connected with the third battery core in parallel to provide charging current for the fourth battery core, so that the charging current of the fourth battery core reaches the rated charging current range of the fourth battery core, and the second power regulating circuit is used for being connected with the fourth battery core in parallel to provide charging current for the fifth battery core, so that the charging current of the fifth battery core reaches the rated charging current range of the fifth battery core.
12. An electronic device comprising a first cell, a second cell and a dual cell control circuit as claimed in any one of claims 1-9.

Description

Dual-cell control circuit, control method and electronic equipment Technical Field The present application relates to the field of electronic technologies, and in particular, to a dual-cell control circuit, a control method, and an electronic device. Background In electronic devices, such as mobile phones, tablet computers, etc., dual-battery cells may be used as a power source for the electronic devices to provide longer endurance and higher power output. Particularly, for some high-power consumption applications, such as high-definition video playing, game running and multitasking, the double-battery-core scheme can increase the service time of the electronic equipment and meet the daily use requirements of users. In the prior art, the charging schemes for the dual cells include a series charging scheme and a parallel charging scheme. In the parallel charging scheme, a charging power supply is required to provide a larger current, and the problem of serious charging and heating exists. In the serial charging scheme, the charging multiplying power and the battery capacity of the two battery cells are required to be the same, otherwise, the problems of limited charging rate, unbalanced charging electric quantity and the like can occur. Disclosure of Invention The application provides a double-battery-core control circuit, a double-battery-core control method and electronic equipment, and solves the problem that the health conditions of two battery cores cannot be detected respectively in the using process of the electronic equipment. In a first aspect, the application provides a dual-battery-core control circuit, which solves the problems of serious heating and unbalanced electric quantity of a traditional dual-battery-core system during parallel charging by introducing the cooperative work of a power regulating circuit and a charging circuit. The input end of the charging circuit is connected with the charging power supply, and the first output end of the charging circuit is connected with the input end of the power regulating circuit and the first end of the first battery cell so as to provide charging current for the first battery cell. The rated charging current of the first battery cell is smaller or equal to the rated charging current of the second battery cell, and the charging current output by the second end of the first battery cell may not meet the charging requirement of the second battery cell. The power regulating circuit is connected with the first battery core in parallel to provide charging current for the second battery core, so that the second battery core is charged efficiently in the rated charging current range, and the problem of mismatching of battery core capacity and charging rate in a serial charging scheme is solved. In one possible implementation manner, the dual-cell control circuit further comprises a controller and a first switching tube, wherein a first end of the first switching tube is connected with an output end of the power regulating circuit and a second end of the first cell, and a second end of the first switching tube is connected with a first end of the second cell. The first switching tube is used as a switch for starting and stopping series charging, and the controller controls the first switching tube to be closed and controls the power regulating circuit to work under the condition that the input end of the charging circuit is determined to be connected with the charging power supply, so that the first battery core and the second battery core are charged in series. In one possible implementation manner, the dual-cell control circuit further comprises a second switching tube, wherein a first end of the second switching tube is connected with the output end of the power regulating circuit and a second end of the first cell, and a second end of the second switching tube is grounded. When the controller controls the first switching tube to be closed, the first battery core and the second battery core are required to be charged in series currently, and the second switching tube is kept to be opened at the moment, so that short circuit is avoided. In one possible implementation manner, the charging circuit comprises a first charging circuit and a second charging circuit, wherein the input end of the first charging circuit and the input end of the second charging circuit are used for being connected with the output end of the charging circuit in parallel, the output end of the first charging circuit is connected with the first output end of the charging circuit, the output end of the second charging circuit is connected with the second output end of the charging circuit, and the second output end of the charging circuit is connected with the first end of the second battery core. The first charging circuit and the second charging circuit can be utilized to respectively provide charging currents for the first battery cell and the second battery cell to realize parallel