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CN-119726011-B - Battery module and electronic equipment

CN119726011BCN 119726011 BCN119726011 BCN 119726011BCN-119726011-B

Abstract

The application discloses a battery module and electronic equipment, wherein the battery module comprises a battery core, a battery protection chip, a first connector, a second connector and a first switch unit, a first electrode of the battery core is connected to the first connector and the second connector through the first switch unit respectively, a second electrode of the battery core is connected to the second connector through the battery protection chip, or the first electrode of the battery core is connected to the first connector and the second connector respectively, and a second electrode of the battery core is connected to the second connector through the battery protection chip and the first switch unit in sequence, wherein the battery protection chip is connected with the first switch unit, and the first switch unit is in a cut-off state under the condition that the first connector and/or the second connector is not connected with a main board.

Inventors

  • DUAN CHUANG
  • LIN RUI
  • HU YAO

Assignees

  • 维沃移动通信有限公司

Dates

Publication Date
20260505
Application Date
20241226

Claims (11)

  1. 1. A battery module is characterized by comprising a battery core, a battery protection chip, a first connector, a second connector and a first switch unit; The first electrode of the battery cell is connected to the first end of the first connector and the first end of the second connector through the first switch unit respectively; the second electrode of the battery cell is connected to the second end of the second connector through the battery protection chip, wherein the voltage monitoring end of the battery protection chip is connected to the second end of the second connector; Or alternatively The second electrode of the battery core is connected to the second end of the second connector through the battery protection chip and the first switch unit in sequence, wherein the voltage monitoring end of the battery protection chip is connected to the second end of the second connector through the first switch unit; the battery protection chip is connected with the first switch unit, and the first switch unit is in an off state under the condition that the first connector and/or the second connector are/is not connected with the main board.
  2. 2. The battery module according to claim 1, wherein the battery protection chip outputs a first electrical signal to the first switching unit in a state where the first switching unit is in a conductive state by the first electrical signal in a case where the first connector and the second connector are connected to a main board, and the battery cell forms an energizing path with a battery management chip in the main board through the first connector and the second connector.
  3. 3. The battery module of claim 2, wherein the first electrode of the cell is further connected to the second end of the first connector, the second electrode of the cell is further connected to the second end of the second connector, and the power terminal of the battery protection chip is connected to the third end of the second connector; When the first connector and the second connector are connected with the main board, the battery cell sequentially passes through the second end of the first connector, the main board and the third end of the second connector to supply power to the battery protection chip, when the battery cell supplies power to the battery protection chip, the battery protection chip outputs the first electric signal to the first switch unit, the first switch unit is in a conducting state under the action of the first electric signal, and an electrifying path is formed from the first electrode of the battery cell to the second electrode of the battery cell sequentially through the first switch unit, the first end of the first connector, the battery management chip and the second end of the second connector.
  4. 4. The battery module of claim 1, wherein the first switching unit comprises a first power switching tube and a second power switching tube; The source electrode of the first power switch tube is connected to the first electrode of the battery core, the source electrode of the second power switch tube is connected to the second connector, the grid electrodes of the first power switch tube and the second power switch tube are both connected to the battery protection chip, and the drain electrode of the first power switch tube is connected with the drain electrode of the second power switch tube; Under the condition that the first connector and/or the second connector are not connected with a main board, the first power switch tube and the second power switch tube are in an off state; under the condition that the first connector and the second connector are connected with the main board, the battery cell supplies power to the battery protection chip, the battery protection chip outputs first electric signals to the first power switch tube and the second power switch tube, and the first power switch tube and the second power switch tube are in a conducting state under the action of the first electric signals.
  5. 5. The battery module of claim 4, wherein the first switching unit further comprises a first resistor and a second resistor; the first resistor is connected between the source electrode and the drain electrode of the first power switch tube, and the second resistor is connected between the source electrode and the drain electrode of the second power switch tube.
  6. 6. The battery module according to claim 1, wherein the first switching unit comprises a third power switching tube; The source electrode and the grid electrode of the third power switch tube are connected to the battery protection chip, and the drain electrode of the third power switch tube is connected to the second connector; Wherein, the third power switch tube is in an off state under the condition that the first connector and/or the second connector are/is not connected with a main board; under the condition that the first connector and the second connector are connected with the main board, the battery cell supplies power to the battery protection chip, the battery protection chip outputs a first electric signal to the third power switch tube, and the third power switch tube is in a conducting state under the action of the first electric signal.
  7. 7. The battery module of claim 6, wherein the first switching unit further comprises a third resistor; the third resistor is connected between the source electrode and the drain electrode of the third power switch tube.
  8. 8. The battery module according to claim 4 or 6, further comprising at least one boosting unit; the first switching unit is connected to the battery protection chip through the boosting unit.
  9. 9. The battery module according to claim 6, further comprising a second switching unit; the second electrode of the battery cell is also connected to the second connector through the second switch unit; The battery protection chip is connected with the second switch unit, the second switch unit is in an off state under the condition that the first connector and/or the second connector are/is not connected with the main board, the battery cell supplies power to the battery protection chip under the condition that the first connector and the second connector are connected with the main board, the battery protection chip outputs a second electric signal to the second switch unit, and the second switch unit is in an on state under the action of the second electric signal.
  10. 10. The battery module according to claim 9, wherein the second switching unit comprises a fourth power switching tube and a fifth power switching tube; The source electrode of the fourth power switch tube is connected to the second electrode of the electric core, the source electrode of the fifth power switch tube is connected to the second connector, the grid electrodes of the fourth power switch tube and the fifth power switch tube are respectively connected to the battery protection chip, and the drain electrode of the fourth power switch tube is connected with the drain electrode of the fifth power switch tube; wherein, under the condition that the first connector and/or the second connector are not connected with a main board, the fourth power switch tube and the fifth power switch tube are in an off state; under the condition that the first connector and the second connector are connected with the main board, the battery cell supplies power to the battery protection chip, the battery protection chip outputs second electric signals to the fourth power switch tube and the fifth power switch tube, and the fourth power switch tube and the fifth power switch tube are in a conducting state under the action of the second electric signals.
  11. 11. An electronic device comprising the battery module according to any one of claims 1 to 10, and further comprising the main board.

Description

Battery module and electronic equipment Technical Field The present disclosure relates to electronic devices, and particularly to a battery module and an electronic device. Background In order to solve the problem of buckling and wire burning caused by the frequent electrification of the battery cell connector, a scheme of closing a battery module (shutdown) is considered. Specifically, when the battery module is not buckled on the main board, the power end VDD of a battery protection chip in the battery module is not electrified, and a protection switch of the negative electrode of the battery core is in an off state, so that a connector in the battery module is not electrified; when only any connector in the battery module is buckled on the main board, the power end VDD of the battery protection chip is still not electrified, the protection switch tube of the battery cell cathode is still in an off state, and the connector in the battery module is still not electrified; when two connectors in the battery module are buckled on the main board, the power end VDD of the battery protection chip is electrified, and the protection switch of the battery cell cathode is in a conducting state, and the connectors in the battery module are electrified, so that the battery module is electrified with the main board. However, in the operation process of fastening the actual battery module and the main board, there may be a situation that one of the connectors is fastened to the main board first, at this time, a leakage path may be generated between the battery module and the main board, which results in that when the two connectors are not completely fastened to the main board, the power supply end VDD of the battery protection chip is electrified with the electric core, so that the battery protection chip will generate malfunction, the protection switch of the negative electrode of the electric core is opened by mistake, or the control logic of the battery management chip in the main board is affected. Disclosure of Invention The embodiment of the application provides a battery module and electronic equipment, which are used for solving the problem that the control logic of a chip in the battery module and a main board is easily affected to cause misoperation because a current battery module possibly generates a leakage path when being buckled with the main board. In order to solve the technical problems, the application is realized as follows: In a first aspect, an embodiment of the present application provides a battery module, including a battery cell, a battery protection chip, a first connector, a second connector, and a first switch unit; the first electrode of the battery cell is connected to the first connector and the second connector through the first switch unit, and the second electrode of the battery cell is connected to the second connector through the battery protection chip; Or alternatively The first electrode of the battery cell is connected to the first connector and the second connector respectively, and the second electrode of the battery cell is connected to the second connector through the battery protection chip and the first switch unit in sequence; the battery protection chip is connected with the first switch unit, and the first switch unit is in an off state under the condition that the first connector and/or the second connector are/is not connected with the main board. In a second aspect, an embodiment of the present application further provides an electronic device, including the battery module as described above, and further including the motherboard. In this way, in the battery module according to the above-mentioned scheme of the present application, the first switch unit is disposed between the first electrode of the battery core and the first connector and the second connector, or the first switch unit is disposed between the battery protection chip and the second connector, and in the case that the first connector and/or the second connector are not connected to the motherboard, the first switch unit is in an off state, that is, in the case that the battery module is not completely connected to the motherboard, the first electrode of the battery core is not conducted between the first connector and the second connector, or the battery protection chip is not conducted between the battery protection chip and the second connector, so that the battery core is prevented from supplying power to the power supply terminal VDD of the battery protection chip due to the leakage path, thereby avoiding affecting the control logic of the battery module and the chip in the motherboard, and avoiding malfunction. Drawings Fig. 1 shows one of the schematic views of the battery module and the motherboard according to the embodiment of the application; FIG. 2 is a second schematic view of a battery module and a motherboard according to an embodiment of the present application; Fig. 3 is a schematic dia