CN117674333A

CN117674333A - Power supply system, battery and electronic equipment

Info

Publication number: CN117674333A
Application number: CN202211054373.8A
Authority: CN
Inventors: 刘旭堃; 杨江涛; 印杰
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2022-08-30
Filing date: 2022-08-30
Publication date: 2024-03-08
Also published as: WO2024046145A1

Abstract

The embodiment of the application discloses a power supply system, a battery and electronic equipment, relates to the technical field of power supply, and can improve the cruising ability and user experience of the electronic equipment. The specific scheme is as follows: there is provided a power supply system comprising a motherboard and a battery, the battery comprising a cell, a flexible circuit board, and at least one board-to-board connector, the cell being coupled to the flexible circuit board, the at least one board-to-board connector being for connecting the motherboard and the flexible circuit board, the flexible circuit board comprising a first switching circuit. The main board is used for generating a first control signal, the first switch circuit is used for receiving the first control signal, and the first control signal is used for controlling the on-off of the first switch circuit so as to control the battery cell to supply power for the load.

Description

Power supply system, battery and electronic equipment

Technical Field

The embodiment of the application relates to the technical field of electronics, in particular to a power supply system, a battery and electronic equipment.

Background

The battery mainly comprises an electric core, and the capacity of the battery is positively related to the volume of the electric core. Specifically, as the volume of the cell is larger, the capacity of the battery is larger. Because the battery has the advantages of simple structure and convenient carrying, the battery is widely applied to various types of electronic equipment for supplying power to loads, and the capacity of the battery also becomes a key performance parameter of the electronic equipment.

At present, the space reserved for the battery in the electronic equipment is limited, and how to increase the volume of the battery core as much as possible in the limited space, so that the capacity of the battery is increased, and the battery becomes one of key points in the design of the electronic equipment.

Disclosure of Invention

The embodiment of the application provides a power supply system, a battery and electronic equipment, which can improve the cruising ability and user experience of the electronic equipment.

In order to achieve the above purpose, the embodiment of the application adopts the following technical scheme:

in a first aspect of the embodiments, a power system is provided that includes a motherboard and a battery including a battery cell, a flexible circuit board, and at least one board-to-board connector, the battery cell being coupled to the flexible circuit board, the at least one board-to-board connector being configured to connect the motherboard and the flexible circuit board, the flexible circuit board including a first switching circuit. The main board is used for generating a first control signal, the first switch circuit is used for receiving the first control signal, and the first control signal is used for controlling the on or off of the first switch circuit so as to control the battery cell to supply power for the load.

Specifically, the main board is used for judging whether the battery core is over-heated or not according to the current and the voltage output by at least one board-to-board connector and the received temperature information of the battery core, whether a circuit between the battery core and a load has faults such as short circuit, overvoltage or overcurrent or the like or not, and generating a first control signal. When a loop between the battery core and the load normally works, the first control signal is used for conducting the first switch circuit, so that the battery core can supply power to the load; when the temperature of the battery cell is higher and the temperature exceeds the temperature, or when faults such as short circuit, overvoltage or overcurrent occur in a loop between the battery cell and a load, the first control signal is used for switching off the first switch circuit, so that the loop between the battery cell and the load is closed, and the safety of the battery cell is ensured.

Alternatively, the flexible circuit board may be one flexible circuit board, or may include a plurality of sub-flexible circuit boards, where the number of flexible circuit boards specifically included in the flexible circuit board in the embodiment of the present application is not limited.

Alternatively, the load may be a component in the motherboard, for example, the load may be a central processor in the motherboard, or may be a component coupled to the motherboard, for example, the load may be a speaker coupled to the motherboard. The embodiments of the present application are not limited to a specific type of load, and a specific location of the load.

According to the power supply system provided by the embodiment of the application, the first switch circuit is arranged in the flexible circuit board and receives the first control signal generated by the main board, so that a loop between the battery cell and the load is conducted or turned off, and a protection plate is not required to be arranged, the volume of the battery cell can be increased, the capacity of a battery can be improved, and the cruising ability and the user experience of the electronic equipment are improved.

With reference to the first aspect, in one possible implementation manner, the electrical core includes a positive tab and a negative tab, and the at least one board-to-board connector includes a first board-to-board connector, the first board-to-board connector including a first positive terminal, a first negative terminal, a first switch terminal, a second positive terminal corresponding to the first positive terminal, a second negative terminal corresponding to the first negative terminal, and a first enable terminal corresponding to the first switch terminal; the first switching circuit includes a first terminal, a second terminal, and a controlled terminal. The first end of the first switch circuit is coupled with the negative electrode lug of the battery cell, the second end of the first switch circuit is coupled with the second negative end, the controlled end of the first switch circuit is coupled with the first enabling end, the positive electrode lug of the battery cell is coupled with the second positive end, the first positive end and the first negative end are used for being coupled with a load, and the first switch end is used for receiving a first control signal.

According to the power supply system provided by the embodiment of the application, the first control signal is received through the first switch end of the first board-to-board connector, and the first switch circuit is controlled to be turned on or off, so that a loop between the battery core and the load is turned on or off, and a protection plate is not required to be arranged, the volume of the battery core can be increased, the capacity of a battery is improved, and the cruising ability and the user experience of the electronic equipment are improved.

With reference to the first aspect, in one possible implementation manner, the electrical core includes a positive tab and a negative tab, and the at least one board-to-board connector includes a first board-to-board connector and a second board-to-board connector; the first board-to-board connector comprises a first negative end, a first switch end, a second negative end corresponding to the first negative end and a first enabling end corresponding to the first switch end, and the second board-to-board connector comprises a first positive end and a second positive end corresponding to the first positive end; the first switching circuit includes a first terminal, a second terminal, and a controlled terminal. The first end of the first switch circuit is coupled with the negative electrode lug of the battery cell, the second end of the first switch circuit is coupled with the second negative end, the controlled end of the first switch circuit is coupled with the first enabling end, the positive electrode lug of the battery cell is coupled with the second positive end, the first positive end and the first negative end are used for being coupled with a load, and the first switch end is used for receiving a first control signal.

According to the power supply system provided by the embodiment of the application, the first negative end and the first enabling end are arranged in the first board-to-board connector, the first positive end is arranged in the second board-to-board connector, so that the current flowing through the second board-to-board connector between the positive lug and the first positive end can have a larger current value, the current flowing through the first board-to-board connector between the negative lug and the first negative end can have a larger current value, the heating points can be dispersed in the first board-to-board connector and the second board-to-board connector, the rated charging current and the rated power of the battery during charging can be improved, and the user experience can be improved. Meanwhile, the first negative end and the first enabling end are arranged in the first board-to-board connector, and the first positive end is arranged in the second board-to-board connector, so that the possibility of short circuit between the second positive end in the second board-to-board connector and the first enabling end and the second negative end in the first board-to-board connector can be reduced in a fault scene that water inflow leads to total short circuit of terminals in the board-to-board connector, and the safety of the battery cell can be ensured.

With reference to the first aspect, in one possible implementation manner, the motherboard includes a first control circuit, the first control circuit includes a first protection chip and a first current detection resistor, and the first protection chip includes a first end, a second end and a control end. One end of the first negative terminal and one end of the first current detection resistor are coupled with the first end of the first protection chip, the other end of the first current detection resistor is coupled with the second end of the first protection chip, and the control end of the first protection chip is coupled with the first switch end. The first protection chip is used for determining a first current flowing through the first current detection resistor according to the voltages at two ends of the first current detection resistor and generating a first control signal according to the first current.

According to the power supply system provided by the embodiment of the application, the first protection chip and the first current detection resistor are arranged in the main board, so that whether the battery cell is in short circuit, overcurrent, overvoltage, overtemperature and other faults can be detected, and when the battery cell is detected to be in fault, the first protection chip generates the first control signal to turn off the first switch circuit, so that the safety of the battery cell can be ensured. Meanwhile, the first protection chip and the first current detection resistor are arranged in the main board without adopting a protection board, so that the volume of the battery core can be increased, the capacity of the battery is improved, and the cruising ability and the user experience of the electronic equipment are improved.

With reference to the first aspect, in one possible implementation manner, the flexible circuit board further includes a second switch circuit, where the second switch circuit includes a first end, a second end, and a controlled end, and the at least one board-to-board connector further includes a second switch end, and a second enabling end corresponding to the second switch end. The first end of the second switch circuit is coupled with the positive electrode lug of the battery cell, the second end of the second switch circuit is coupled with the second positive end, the controlled end of the second switch circuit is coupled with the second enabling end, the second switch end is used for receiving a second control signal, and the second control signal is used for controlling the second switch circuit to be turned on or off so as to control the battery cell to supply power for a load.

According to the power supply system provided by the embodiment of the application, the second switch circuit is arranged between the positive lug and the second positive end, so that when the battery core fails, the first control signal can be generated to control the turn-off of the first switch circuit through the first control circuit, and meanwhile, the second switch circuit is controlled to be turned off through the second control signal, so that the safety of the battery core can be further ensured, and the reliability of the power supply system can be further improved.

With reference to the first aspect, in one possible implementation manner, the motherboard further includes a second control circuit, where the second control circuit includes a second protection chip and a second current detection resistor, and the second protection chip includes a first end, a second end, and a control end. One end of the first positive end and one end of the second current detection resistor are coupled with the first end of the second protection chip, the other end of the second current detection resistor is coupled with the second end of the second protection chip, and the control end of the second protection chip is coupled with the second switch end. The second protection chip is used for determining a second current flowing through the second current detection resistor according to the voltages at two ends of the second current detection resistor, and generating a second control signal according to the second current.

According to the power supply system provided by the embodiment of the application, the second switch circuit is arranged between the positive electrode lug and the second positive end, and the second control circuit is arranged in the main board, so that when the battery core fails, the first control circuit can generate the first control signal to control the turn-off of the first switch circuit, and meanwhile, the second control circuit generates the second control signal to control the turn-off of the second switch circuit, so that the safety of the battery core can be further ensured, and the reliability of the power supply system can be further improved.

With reference to the first aspect, in one possible implementation manner, the battery further includes a tamper chip, and the at least one board-to-board connector further includes a third board-to-board connector, and the third board-to-board connector is used for connecting the tamper chip and the motherboard. The main board is used for reading the anti-counterfeiting information of the anti-counterfeiting chip and determining the authenticity of the battery according to the anti-counterfeiting information.

The power supply system provided by the embodiment of the application connects the anti-counterfeiting chip and the main board through the third board-to-board connector, so that the main board can read the anti-counterfeiting information in the anti-counterfeiting chip through the third board-to-board connector, and the authenticity of the battery is determined.

With reference to the first aspect, in one possible implementation manner, the battery further includes an anti-collision device, where the anti-collision device is disposed on a side wall of the positive electrode lug and the negative electrode lug of the battery cell, and the anti-collision device is used for protecting the battery cell.

According to the power supply system provided by the embodiment of the application, the electric core can be protected by the anti-collision device, the electric core is prevented from being mechanically impacted and bumped, and the safety of the electric core can be ensured.

With reference to the first aspect, in one possible implementation manner, the first switching circuit includes a first transistor and a first resistor, and the second switching circuit includes a second transistor and a second resistor. The first end of the first transistor and one end of the first resistor are coupled with the first end of the first switch circuit, the second end of the first transistor and the other end of the first resistor are coupled with the second end of the first switch circuit, and the third end of the first transistor is coupled with the controlled end of the first switch circuit. The first end of the second transistor and one end of the second resistor are coupled with the first end of the second switch circuit, the second end of the second transistor and the other end of the second resistor are coupled with the second end of the second switch circuit, and the third end of the second transistor is coupled with the controlled end of the second switch circuit.

Alternatively, the first transistor and the second transistor may be transistors such as MOS transistors or transistors, and the specific types of the first transistor and the second transistor are not limited in the embodiments of the present application.

The first transistor may be an N-type MOS transistor, and the second transistor may be a P-type MOS transistor, for example.

According to the power supply system provided by the embodiment of the application, the first switch circuit comprises the first transistor and the first resistor, the second switch circuit comprises the second transistor and the second resistor, when a loop between the battery cell and the load normally works, the first transistor and the second transistor are conducted, the resistance value of the first transistor and the second transistor when being conducted is smaller (usually in milliohm level), and therefore the battery cell can generate larger current to meet the requirement of the load. When the battery cell is over-heated or a circuit between the battery cell and a load has faults such as short circuit, overvoltage or overcurrent, the current flowing through the first resistor and the second resistor is smaller because the resistance values of the first resistor and the second resistor are larger (generally in kiloohm level), so that the safety of the battery cell can be ensured.

In a second aspect of embodiments of the present application, a battery is provided that includes a battery cell coupled to a flexible circuit board, and at least one board-to-board connector for connecting the motherboard and the flexible circuit board, the flexible circuit board including a first switching circuit. The first switch circuit is used for receiving a first control signal, and the first control signal is used for controlling the on-off state of the first switch circuit so as to control the battery cell to supply power for the load.

With reference to the second aspect, in one possible implementation manner, the electrical core includes a positive tab and a negative tab, and the at least one board-to-board connector includes a first board-to-board connector including a first positive terminal, a first negative terminal, a first switch terminal, a second positive terminal corresponding to the first positive terminal, a second negative terminal corresponding to the first negative terminal, and a first enable terminal corresponding to the first switch terminal; the first switching circuit includes a first terminal, a second terminal, and a controlled terminal. The first end of the first switch circuit is coupled with the negative electrode lug of the battery cell, the second end of the first switch circuit is coupled with the second negative end, the controlled end of the first switch circuit is coupled with the first enabling end, the positive electrode lug of the battery cell is coupled with the second positive end, the first positive end and the first negative end are used for being coupled with a load, and the first switch end is used for receiving a first control signal.

With reference to the second aspect, in one possible implementation manner, the battery cell includes a positive tab and a negative tab, and the at least one board-to-board connector includes a first board-to-board connector and a second board-to-board connector. The first board-to-board connector comprises a first negative end, a first switch end, a second negative end corresponding to the first negative end and a first enabling end corresponding to the first switch end, and the second board-to-board connector comprises a first positive end and a second positive end corresponding to the first positive end; the first switching circuit includes a first terminal, a second terminal, and a controlled terminal. The first end of the first switch circuit is coupled with the negative electrode lug of the battery cell, the second end of the first switch is coupled with the second negative end, the controlled end of the first switch circuit is coupled with the first enabling end, the positive electrode lug of the battery cell is coupled with the second positive end, the first positive end and the first negative end are used for being coupled with a load, and the first switch end is used for receiving a first control signal.

With reference to the second aspect, in one possible implementation manner, the flexible circuit board further includes a second switch circuit, where the second switch circuit includes a first end, a second end, and a controlled end, and the at least one board-to-board connector further includes a second switch end, and a second enabling end corresponding to the second switch end. The first end of the second switch circuit is coupled with the positive lug of the battery cell, the second end of the second switch circuit is coupled with the second positive end, the controlled end of the second switch circuit is coupled with the second enabling end, the second switch end is used for receiving a second control signal, and the second control signal is used for controlling the second switch circuit to be turned on or off so as to control the battery cell to supply power for a load.

With reference to the second aspect, in one possible implementation manner, the battery further includes a tamper chip, and the at least one board-to-board connector further includes a third board-to-board connector, and the third board-to-board connector is used for connecting the tamper chip and the motherboard.

With reference to the second aspect, in one possible implementation manner, the battery further includes an anti-collision device, where the anti-collision device is disposed on a side wall of the positive electrode lug and the negative electrode lug of the battery cell, and the anti-collision device is used for protecting the battery cell.

With reference to the second aspect, in one possible implementation manner, the first switching circuit includes a first transistor and a first resistor, and the second switching circuit includes a second transistor and a second resistor. The first end of the first transistor and one end of the first resistor are coupled with the first end of the first switch circuit, the second end of the first transistor and the other end of the first resistor are coupled with the second end of the first switch circuit, and the third end of the first transistor is coupled with the controlled end of the first switch circuit. The first end of the second transistor and one end of the second resistor are coupled with the first end of the second switch circuit, the second end of the second transistor and the other end of the second resistor are coupled with the second end of the second switch circuit, and the third end of the second transistor is coupled with the controlled end of the second switch circuit.

A third aspect of embodiments of the present application provides an electronic device comprising a load and a power supply system for providing power to the load, the power supply system being as described above in relation to the first aspect or any one of the possible implementations of the first aspect.

Optionally, the types of the electronic device include smart phones, tablet computers and notebook computers.

For descriptions of the second and third aspects in this application, reference may be made to the detailed description of the first aspect; moreover, the advantages of the second aspect and the third aspect may be referred to as the analysis of the advantages of the first aspect, and will not be described here again.

Drawings

Fig. 1 is a schematic view of a battery;

FIG. 2 is a schematic diagram of a circuit configuration of a battery;

fig. 3 is a schematic structural diagram of a power supply system according to an embodiment of the present application;

fig. 4 is a schematic structural diagram of another power supply system according to an embodiment of the present disclosure;

fig. 5 is a schematic structural diagram of a battery according to an embodiment of the present disclosure;

fig. 6 is a schematic structural diagram of another power supply system according to an embodiment of the present disclosure;

fig. 7 is a schematic structural diagram of another battery according to an embodiment of the present disclosure;

Fig. 8 is a schematic structural diagram of still another power supply system according to an embodiment of the present disclosure;

fig. 9 is a schematic structural view of yet another battery according to an embodiment of the present disclosure;

fig. 10 is a schematic structural diagram of an electronic device according to an embodiment of the present application.

Detailed Description

The making and using of the various embodiments are discussed in detail below. It should be appreciated that many of the applicable inventive concepts provided herein can be embodied in a wide variety of specific contexts. The specific embodiments discussed are merely illustrative of specific ways to make and use the description and technology, and do not limit the scope of the application.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art.

Each circuit or other component may be described or referred to as "for" performing one or more tasks. In this case, "for" is used to connote structure by indicating that circuitry/components includes structure (e.g., circuitry) that performs one or more tasks during operation. Thus, a given circuit/component may be said to be used to perform that task even when the circuit/component is not currently operational (e.g., not open). Circuits/components used with the term "for" include hardware, such as circuitry to perform operations, etc.

The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application. In this application, "at least one" means one or more, and "a plurality" means two or more. "and/or", describes an association relationship of an association object, and indicates that there may be three relationships, for example, a and/or B, and may indicate: a alone, a and B together, and B alone, wherein a, B may be singular or plural. The character "/" generally indicates that the context-dependent object is an "or" relationship. "at least one of" or the like means any combination of these items, including any combination of single item(s) or plural items(s). For example, at least one (one) of a, b or c may represent: a, b, c, a and b, a and c, b and c or a, b and c, wherein a, b and c can be single or multiple. In addition, in the embodiments of the present application, the words "first", "second", and the like do not limit the number and order.

In this application, the terms "exemplary" or "such as" are used to mean serving as an example, instance, or illustration. Any embodiment or design described herein as "exemplary" or "for example" should not be construed as preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "such as" is intended to present related concepts in a concrete fashion.

Before describing the embodiments of the present application, a description will be first made of the background art related to the present application.

Because the battery has the advantages of simple structure and convenient carrying, the battery is widely applied to various types of electronic equipment for supplying power to loads. For example, electronic devices such as smartphones, tablet computers, and notebook computers use batteries to power loads such as screens, processors, and memory.

As shown in fig. 1, a schematic structure of a battery 100 is shown, and the battery 100 includes a battery cell 110, a buffer pad 120, a protection plate 130, a flexible circuit board (flexible printed circuit, FPC) 140, a board-to-board (BTB) connector 150, and a protection plate holder 160.

The battery cell 110 is configured to store electric energy, and includes a positive electrode tab 111 and a negative electrode tab 112, where the positive electrode tab 111 and the negative electrode tab 112 are configured to be coupled to the protection board 130, for example, the positive electrode tab 111 and the negative electrode tab 112 may be coupled to the protection board 130 by a welding sheet in a welding manner. The protection board 130 is used to protect the battery cells 110 in the event of a fault such as a short circuit, overvoltage, overcurrent, or overheat, the protection board 130 is coupled to the flexible circuit board 140, the flexible circuit board 140 serves as a path, and the flexible circuit board 140 is provided with a board-to-board connector 150, and the board-to-board connector 150 is used to connect the flexible circuit board 140 and a load, thereby supplying power to the load. The protection plate holder 160 serves to protect the protection plate 130.

Specifically, the protection board 130 is used to disconnect the circuit between the battery cell 110 and the load when a fault such as a short circuit, an overvoltage, an overcurrent, or an overheat occurs, so as to protect the battery cell 110.

For example, as shown in fig. 2, a schematic circuit structure of the battery 100 is shown, the protection board 130 includes an anti-counterfeiting chip 131, a current detection resistor 132, a first protection chip 133, a second protection chip 134, a first metal-oxide-semiconductor field effect transistor (MOSFET) 135 and a second MOSFET136, wherein the MOSFETs may also be abbreviated as MOS.

As can be seen from fig. 2, the protection plate 130 includes a first positive terminal, a first negative terminal, a second positive terminal corresponding to the first positive terminal, and a second negative terminal corresponding to the first negative terminal, the positive tab 111 of the battery cell 110 is coupled to the first positive terminal of the protection plate 130, the second positive terminal of the protection plate 130 is coupled to the positive terminal of the board-to-board connector 150, the negative tab 112 of the battery cell 110 is coupled to the first negative terminal of the protection plate 130, and the second negative terminal of the protection plate 130 is coupled to the negative terminal of the board-to-board connector 150. The first end of the anti-counterfeiting chip 131 is coupled with the first positive end of the protection plate 130, and the second end of the anti-counterfeiting chip 131 is coupled with the first negative end of the protection plate 130, so that the anti-counterfeiting chip 131 can receive the electric energy provided by the battery cell 110. The current detection resistor 132, the first MOS135 and the second MOS136 are coupled in series between the first negative terminal and the second negative terminal of the protection plate 130, the first end of the first protection chip 133 and the first end of the second protection chip 134 are coupled with one end of the current detection resistor 132, the second end of the first protection chip 133 and the second end of the second protection chip 134 are coupled with the other end of the current detection resistor 132, the control end of the first protection chip 133 is coupled with the controlled end of the first MOS135, and the second protection chip 134 is coupled with the controlled end of the second MOS 136.

The anti-counterfeit chip 131 stores anti-counterfeit information, and the anti-counterfeit chip 131 further includes a data terminal coupled with the anti-counterfeit data terminal of the board-to-board connector 150 for outputting the anti-counterfeit information for determining the authenticity of the battery 100. The first protection chip 133 and the second protection chip 134 are used for judging whether a power supply circuit of the battery cell 110 has a fault such as a short circuit or an overcurrent in the power supply process, and are also used for controlling the corresponding MOS transistor to be turned off when the power supply circuit of the battery cell 110 has the fault, so that the safety of the battery cell 110 is ensured.

Specifically, the first protection chip 133 and the second protection chip 134 store the resistance values of the current detection resistor 132, and the first protection chip 133 and the second protection chip 134 can detect the voltages at two ends of the current detection resistor 132, and determine the magnitude of the current in the power supply loop of the battery cell 110 according to the voltages at two ends of the current detection resistor 132 and the resistance values of the current detection resistor 132, so as to determine whether a fault such as a short circuit or an overcurrent occurs in the power supply loop of the battery cell 110. When the power supply loop of the battery cell 110 fails, the first protection chip 133 is further configured to send a control signal to the controlled end of the first MOS135 to turn off the first MOS135, and meanwhile, the second protection chip is further configured to send a control signal to the controlled end of the second MOS136 to turn off the second MOS136, so as to disconnect the power supply loop of the battery cell 110, so as to ensure the safety of the battery cell 110.

It can be appreciated that, by setting the first protection chip 133 and the first MOS135, and simultaneously setting the second protection chip 134 and the second MOS136, the two protection chips simultaneously control the corresponding MOS transistors to be turned off when the power supply loop of the battery 100 fails, so that the safety of the battery cell 110 can be further ensured, and the reliability of the battery 100 is improved.

However, the space reserved for the battery 100 in the electronic device is limited, the capacity of the battery 100 is positively related to the volume of the battery cell 110, and the battery 100 is limited to increase the volume of the battery cell 110 due to the protection plate 130, so that the capacity of the battery 100 is limited to be increased, resulting in poor cruising ability and user experience of the electronic device.

In order to improve the capacity of a battery, the embodiment of the application provides a power supply system, which can improve the cruising ability and user experience of electronic equipment.

As shown in fig. 3, for a power supply system 300 provided in an embodiment of the present application, the power supply system 300 includes a motherboard 310 and a battery 320, the battery 320 includes a battery cell 321, a flexible circuit board 322, and at least one board-to-board connector 323, the battery cell 321 is coupled with the flexible circuit board 322, the at least one board-to-board connector 323 is used for connecting the motherboard 310 and the flexible circuit board 322, and the flexible circuit board 322 includes a first switch circuit 3221.

The motherboard 310 is used for generating a first control signal. Specifically, the motherboard 310 is configured to determine whether the battery cell 321 is over-heated according to the current and the voltage output by the at least one board-to-board connector 323 and the received temperature information of the battery cell 321, and whether a circuit between the battery cell 321 and the load 311 has a fault such as a short circuit, an overvoltage or an overcurrent, and generate a first control signal.

The first switch circuit 3221 is configured to receive a first control signal, where the first control signal is configured to control on or off of the first switch circuit 3221 to control the battery cell 321 to supply power to the load 311.

Specifically, when the loop between the battery cell 321 and the load 311 works normally, the first control signal is used to turn on the first switch circuit 3221, so that the battery cell 321 can supply power to the load 311; when the temperature of the battery cell 321 is higher and the temperature exceeds the temperature, or when a fault such as a short circuit, overvoltage or overcurrent occurs in the circuit between the battery cell 321 and the load 311, the first control signal is used to turn off the first switch circuit 3221, so as to turn off the circuit between the battery cell 321 and the load 311, and ensure the safety of the battery cell 321.

Alternatively, the load 311 may be a component in the motherboard 310, for example, the load 311 may be a central processor in the motherboard 310, or may be a component coupled to the motherboard 310, for example, the load 311 may be a speaker coupled to the motherboard 310. The specific type of the load 311 and the specific position of the load 311 in the embodiments of the present application are not limited, and the following embodiments are exemplified by taking the load as a component in the motherboard 310.

Alternatively, the load 311 may be one load, or the load 311 may include a plurality of sub-loads, which is not limited in the embodiment of the present application, and the load 311 specifically includes the number of loads.

In the power supply system 300 provided in this embodiment, the motherboard 310 determines whether the battery cell 321 is over-heated according to the current and the voltage output by the at least one board-to-board connector 323 and the received temperature information of the battery cell 321, whether a circuit between the battery cell 321 and the load 311 has a fault such as a short circuit, an overvoltage or an overcurrent, and when the circuit between the battery cell 321 and the load 311 has a fault, a first control signal is generated to disconnect the first switch circuit 3221, so as to disconnect the circuit between the battery cell 321 and the load 311, so as to ensure the safety of the battery cell 110, thereby improving the reliability of the power supply system 300. Meanwhile, in the power supply system 300 provided in this embodiment of the present application, the first switch circuit 3221 is disposed in the flexible circuit board 322, and the first switch circuit 3221 receives the first control signal generated by the main board 310, so that the loop between the electric core 321 and the load 311 is turned on or off, and the protection board 130 is not required to be disposed, so that the volume of the electric core 321 can be increased, the capacity of the battery 320 can be increased, and the cruising ability and the user experience of the electronic device can be improved.

In one possible embodiment, as shown in fig. 4, the battery cell 321 includes a positive tab and a negative tab, the at least one board-to-board connector 323 includes a first board-to-board connector 3231, the first board-to-board connector 3231 includes a first positive terminal, a first negative terminal, a first switch terminal, a second positive terminal corresponding to the first positive terminal, a second negative terminal corresponding to the first negative terminal, and a first enable terminal corresponding to the first switch terminal, and the first switch circuit 3221 includes a first terminal, a second terminal, and a controlled terminal.

A first terminal of the first switching circuit 3221 is coupled to a negative terminal of the battery cell 321, a second terminal of the first switching circuit 3221 is coupled to a second negative terminal, a controlled terminal of the first switching circuit 3221 is coupled to a first enable terminal, a positive terminal of the battery cell 321 is coupled to a second positive terminal, the first positive terminal and the first negative terminal are configured to be coupled to the load 311 to provide electrical energy to the load 311, and the first switching terminal is configured to receive a first control signal.

The configuration of the power supply system 300 shown in fig. 4 is an exemplary one, and is not limited to the embodiment of the present application.

The first switch circuit 3221 may include a first transistor Q1 and a first resistor R1, wherein a first end of the first transistor Q1 and one end of the first resistor R1 are coupled to a first end of the first switch circuit 3221, a second end of the first transistor Q1 and the other end of the first resistor R1 are coupled to a second end of the first switch circuit 3221, and a third end of the first transistor Q1 is coupled to a controlled end of the first switch circuit 3221.

The first transistor Q1 is configured to receive the first control signal, where the first control signal is specifically configured to control on or off of the first transistor Q1.

The first resistor R1 is arranged between the negative electrode lug and the second negative electrode lug in series, so that the negative electrode lug and the second negative electrode lug are both in reference with the 0 level, the second negative electrode lug can be prevented from being suspended in level, the first control signal can be ensured to control the on or off of the first transistor, and the first resistor can be also called as a clamping resistor.

Specifically, when the loop between the battery cell 321 and the load 311 is in normal operation, the first control signal is used to turn on the first transistor Q1, and since the resistance value of the first transistor Q1 is smaller (usually in milliohm level) when turned on, the battery cell 321 can generate a larger current to meet the requirement of the load 311. When the battery cell 321 is over-heated or a fault such as a short circuit, an overvoltage or an overcurrent occurs in a loop between the battery cell 321 and the load 311, the first control signal is used for turning off the first transistor Q1, so that the loop between the battery cell 321 and the load 311 is turned off, and the current flowing through the first resistor R1 is small due to the large resistance value (generally in kiloohm level) of the first resistor R1, so that the safety of the battery cell 321 can be ensured.

Alternatively, the first transistor Q1 may be a transistor such as a MOS transistor or a transistor, which is not limited in the embodiment of the present application for the specific type of the first transistor Q1.

For example, the first transistor Q1 may be an N (negative) type MOS transistor, or the first transistor Q1 may be a P (positive) type MOS transistor, which is exemplified by the first transistor in the embodiment of the present application.

At this time, the structure of the battery 320 may be the structure of the battery 320 as shown in fig. 5, the positive and negative tabs of the battery cell 321 are coupled with the flexible circuit board 322, and the first switch circuit 3221 and the first board-to-board connector 3231 are disposed on the flexible circuit board. As can be understood from fig. 5, since the battery 320 does not need to be provided with the protection plate 130, the volume of the battery cell 321 can be increased, and the battery cell 321 after the volume increase includes a battery cell volume increment portion, so that the capacity of the battery 320 can be improved, and the cruising ability and the user experience of the electronic device can be improved.

The power supply system 300 provided by the embodiment of the application receives the first control signal through the first switch end of the first board-to-board connector 3231, and controls the on and off of the first switch circuit 3221, so that the loop between the battery core 321 and the load 311 is turned on or off, and the protection board 130 is not required to be arranged, therefore, the volume of the battery core 321 can be increased, the capacity of the battery 320 is improved, and the cruising ability and the user experience of the electronic device are improved.

In one possible embodiment, as shown in fig. 6, the at least one board-to-board connector 323 includes a first board-to-board connector 3231 and a second board-to-board connector 3232, the first board-to-board connector 3231 includes a first negative terminal, a first switch terminal, a second negative terminal corresponding to the first negative terminal, and a first enable terminal corresponding to the first switch terminal, the second board-to-board connector 3232 includes a first positive terminal, and a second positive terminal corresponding to the first positive terminal, and the first switch circuit 3221 includes a first terminal, a second terminal, and a controlled terminal.

A first terminal of the first switching circuit 3221 is coupled to a negative terminal of the battery cell 321, a second terminal of the first switching circuit 3221 is coupled to a second negative terminal, a controlled terminal of the first switching circuit 3221 is coupled to a first enable terminal, a positive terminal of the battery cell 321 is coupled to a second positive terminal, the first positive terminal and the first negative terminal are coupled to the load 311, and the first switching terminal is configured to receive a first control signal.

The configuration of the power supply system 300 shown in fig. 6 is an exemplary one, and is not limited to the embodiment of the present application.

Each of the above-mentioned at least one board-to-board connector 323 is used as an electrical connector, and there is a limitation of the maximum conducting current, and meanwhile, when the positive tab and the negative tab of the battery cell 321 are charged through one board-to-board connector, the current between the positive tab and the first positive terminal and the current between the negative tab and the first negative terminal all flow through the same board-to-board connector, which will generate serious heating problems, and limit the improvement of the charging current and the power of the battery 320, resulting in poor user experience. According to the embodiment of the application, the first negative end is arranged in the first board-to-board connector 3231, the first positive end is arranged in the second board-to-board connector 3232, so that current flowing through the second board-to-board connector 3232 between the positive lug and the first positive end can have a larger current value, current flowing through the first board-to-board connector 3231 between the negative lug and the first negative end can have a larger current value, heating points can be dispersed in the first board-to-board connector 3231 and the second board-to-board connector 3232, and therefore rated charging current and rated power of a battery 320 during charging can be improved, and user experience can be improved.

Meanwhile, the first negative terminal and the first enabling terminal are disposed in the first board-to-board connector 3231, the first positive terminal is disposed in the second board-to-board connector 3232, and in a fault scenario in which water inflow causes a total short circuit of terminals in the board-to-board connector, the possibility that the second positive terminal in the second board-to-board connector 3232 is short-circuited with the first enabling terminal and the second negative terminal in the first board-to-board connector 3231 can be reduced, so that the first switch circuit 3221 is prevented from being turned on, and possible voltage oscillation, instantaneous heavy current discharge and other anomalies can be avoided, and the safety of the battery cell 321 can be ensured.

Alternatively, the flexible circuit board 322 may be one flexible circuit board, or may include a plurality of sub-flexible circuit boards, where the number of flexible circuit boards included in the flexible circuit board 322 in the embodiment of the present application is not limited.

For example, when the flexible circuit board 322 is one flexible circuit board, the first board-to-board connector 3231 and the second board-to-board connector 3232 are used to connect the main board 310 and the flexible circuit board 322.

For another example, when the flexible circuit board 322 includes a first sub-flexible circuit board 3222 and a second sub-flexible circuit board 3223, a first board-to-board connector 3231 may be used to connect the motherboard 310 and the first sub-flexible circuit board 3222, and a second board-to-board connector 3232 may be used to connect the motherboard 310 and the second sub-flexible circuit board 3223.

The present embodiment is exemplified by the flexible circuit board 322 including a first sub flexible circuit board 3222 and a second sub flexible circuit board 3223. At this time, the structure of the battery 320 may be as shown in fig. 7, in which the positive tab of the battery cell 321 is coupled to the second sub-flexible circuit board 3223, the negative tab is coupled to the first sub-flexible circuit board coupling 3222, the second board-to-board connector 3232 is disposed on the second sub-flexible circuit board 3223, and the first switch circuit 3221 and the first board-to-board connector 3231 are disposed on the flexible circuit board. As can be understood from fig. 7, since the battery 320 does not need to be provided with the protection plate 130, the volume of the battery cell 321 can be increased, and the battery cell 321 after the volume increase includes a battery cell volume increment portion, so that the capacity of the battery 320 can be improved, and the cruising ability and the user experience of the electronic device can be improved.

According to the power supply system 300 provided by the embodiment of the application, the first negative terminal and the first enabling end are arranged in the first board-to-board connector 3231, the first positive end is arranged in the second board-to-board connector 3232, so that current flowing through the second board-to-board connector 3232 between the positive lug and the first positive end can have a larger current value, current flowing through the first board-to-board connector 3231 between the negative lug and the first negative terminal can have a larger current value, heating points can be dispersed in the first board-to-board connector 3231 and the second board-to-board connector 3232, and therefore rated charging current and rated power of the battery 320 during charging can be improved, and user experience can be improved. Meanwhile, the first negative terminal and the first enable terminal are provided in the first board-to-board connector 3231, and the first positive terminal is provided in the second board-to-board connector 3232, so that in a fault scenario in which water inflow causes a total short circuit of terminals in the board-to-board connector, the possibility that the second positive terminal in the second board-to-board connector 3232 is short circuited with the first enable terminal and the second negative terminal in the first board-to-board connector 3231 can be reduced, and the safety of the battery cell 321 can be ensured.

In a possible embodiment, in the power supply system 300 shown in fig. 4 or fig. 6, the motherboard 310 further includes a first control circuit 312, where the first control circuit 312 is configured to generate the first control signal. The first control circuit 312 includes a first protection chip 3121 and a first current detection resistor 3122, the first protection chip 3121 including a first terminal, a second terminal and a control terminal. One end of the first negative terminal, the first current-detecting resistor 3122 is coupled to the first end of the first protection chip 3121, the other end of the first current-detecting resistor 3122 is coupled to the second end of the first protection chip 3121, and the control end of the first protection chip 3121 is coupled to the first switch end.

The first protection chip 3121 is configured to determine a first current flowing through the first current detecting resistor 3122 according to a voltage across the first current detecting resistor 3122, and generate the first control signal according to the first current.

Specifically, the first protection chip 3121 may store the resistance value of the first current detection resistor 3122 and a preset current range, where the first end and the second end of the first protection chip 3121 are used for detecting the voltages at two ends of the first current detection resistor 3122, and the first protection chip 3121 may determine the magnitude of the current flowing through the first current detection resistor 3122 according to the resistance value of the first current detection resistor 3122 and the voltages at two ends of the first current detection resistor 3122, so as to determine whether a short circuit or an overcurrent fault occurs in a loop between the current core 321 and the load 311 according to the magnitude of the current and the preset current range.

For example, taking the resistance value of the first current detecting resistor 3122 as 10Ω and the preset current range as 0.6A-0.8A as an example, when the first protection chip 3121 detects that the voltage across the first current detecting resistor is 10V, the first protection chip 3121 can determine that the current flowing through the first current detecting resistor 3122 is 1A according to the resistance value 10Ω of the first current detecting resistor 3122, and the 1A is greater than the preset current range as 0.6A-0.8A, so that the first protection chip 3121 can determine that the circuit between the electric core 321 and the load 311 has a short circuit or an overcurrent fault, and generate the first control signal to turn off the first switch circuit 3221 to ensure the safety of the electric core 321.

In one possible embodiment, as shown in fig. 6, the first protection chip 3121 may further include a third terminal and a fourth terminal, and the third terminal is coupled to the first positive terminal, so that the first protection chip 3121 may operate by receiving the power provided by the battery cell 321 through the first terminal and the third terminal and generate the first control signal. The first protection chip 3121 may further detect a voltage between the first end and the third end, so as to determine whether an overvoltage fault occurs in a loop between the battery cell 321 and the load 311, and the first protection chip 3121 may further receive a temperature signal through the fourth end, where the temperature signal is used to indicate a temperature of the battery cell 321, and the first protection chip may determine whether an over-temperature fault occurs in the battery cell 321 according to the temperature signal. In the event of the above-mentioned overvoltage and overtemperature faults, the first protection chip 3121 may also generate a first control signal to turn off the first switch circuit 3221, thereby ensuring the safety of the battery cell 321.

In the power supply system provided in this embodiment, by setting the first protection chip 3121 and the first current detection resistor 3122 in the main board 310, it is able to detect whether the electrical core 321 has faults such as short circuit, overcurrent, overvoltage, overtemperature, etc., when detecting that the electrical core 321 has faults, the first protection chip 3121 generates the first control signal to turn off the first switch circuit 3221, so as to ensure the safety of the electrical core 321. Meanwhile, the first protection chip 3121 and the first current detection resistor 3122 are disposed in the main board 310 without adopting the protection board 130, so that the volume of the battery cell 321 can be increased, the capacity of the battery 320 can be improved, and the cruising ability and the user experience of the electronic device can be improved.

In one possible embodiment, as shown in fig. 8, the flexible circuit board 322 further includes a second switch circuit 3224, the second switch circuit 3224 includes a first end, a second end, and a controlled end, and the at least one board-to-board connector 323 further includes a second switch end, and a second enable end corresponding to the second switch end.

The configuration of the power supply system 300 shown in fig. 8 is an exemplary one, and is not limited to the embodiment of the present application.

The first end of the second switch circuit 3224 is coupled to the positive electrode tab of the electric core 321, the second end of the second switch circuit 3224 is coupled to the second positive end, the controlled end of the second switch circuit 3224 is coupled to the second enabling end, the second switch end is used for receiving the second control signal, and the second control signal is used for controlling the on or off of the second switch circuit 3224 so as to control the electric core 321 to supply power to the load 311.

Alternatively, when the circuit structures of the second switch circuit 3224 and the first switch circuit 3221 are the same, the second control signal and the first control signal may be the same control signal, or when the circuit structures of the second switch circuit 3224 and the first switch circuit 3221 are different, the second control signal and the first control signal may be different control signals, which is not limited in the embodiment of the present application, whether the circuit structures of the second switch circuit 3224 and the first switch circuit 3221 are the same or not.

The second switching circuit 3224 may include a second transistor Q2 and a second resistor R2, wherein a first end of the second transistor Q2 and one end of the second resistor R2 are coupled to a first end of the second switching circuit 3224, a second end of the second transistor Q2 and the other end of the second resistor are coupled to a second end of the second switching circuit 3224, and a third end of the second transistor Q2 is coupled to a controlled end of the second switching circuit 3224.

Alternatively, the second transistor Q2 may be a transistor such as a MOS transistor or a transistor, and the specific type of the second transistor Q2 is not limited in the embodiments of the present application.

The second transistor Q2 may be an N-type MOS transistor, or the second transistor Q2 may be a P-type MOS transistor, which is exemplified by the second transistor Q2 in the embodiment of the present application.

When the second transistor Q2 is a P-type MOS transistor, the source terminal of the second transistor Q2 is coupled to the positive electrode tab, and the drain terminal is coupled to the second positive electrode tab, so that it can be understood that the source terminal and the drain terminal of the second transistor Q2 are at a high level, and therefore, the second control signal at a low level can be used to control the on or off of the second transistor, and compared with the N-type MOS transistor which is selected to be turned on at a high level, the loss can be reduced.

When the circuit structures of the second switch circuit 3224 and the first switch circuit 3221 are different, the main board 310 may further include a second control circuit 313, the second control circuit 313 includes a second protection chip 3131 and a second current detection resistor 3132, and the second protection chip 3131 includes a first end, a second end, and a control end. One end of the first positive terminal and one end of the second current detecting resistor 3132 are coupled with the first end of the second protection chip 3131, the other end of the second current detecting resistor 3132 is coupled with the second end of the second protection chip 3131, and the control end of the second protection chip is coupled with the second switch end.

The second protection chip 3131 is configured to determine a second current flowing through the second current detection resistor 3132 according to a voltage across the second current detection resistor 3132, and generate a second control signal according to the second current.

It should be noted that, for the description of the second switch circuit 3224 and the second control circuit 313, reference may be made to the description of the first switch circuit 3221 and the first control circuit 312, and the embodiments of the present application are not repeated herein.

It can be appreciated that the first control circuit 312 generates the first control signal to control the on or off of the first switch circuit 3221, and the second control circuit 313 generates the second control signal to control the on of the second switch circuit 3224, so that when the battery cell 321 fails, the safety of the battery cell 321 can be further ensured, and the reliability of the power supply system 300 can be further improved.

Alternatively, when the flexible circuit board 322 is a flexible circuit board, the first switch circuit 3221 and the second switch circuit 3224 may be disposed in the flexible circuit board 322, or when the flexible circuit board 322 includes a first sub-flexible circuit 3222 and a second sub-flexible circuit board 3223, the first switch circuit 3221 may be disposed in the first sub-flexible circuit 3222, the second switch circuit 3224 may be disposed in the second sub-flexible circuit board 3223, and the specific locations of the first switch circuit 3221 and the second switch circuit 3224 are not limited in the embodiments of the present application, and the first switch circuit 3221 is disposed in the first sub-flexible circuit 3222, and the second switch circuit 3224 is disposed in the second sub-flexible circuit 3223 for illustration.

At this time, the structure of the battery 320 may be as shown in fig. 9, in which the positive tab of the battery cell 321 is coupled to the second sub-flexible circuit board 3223, the negative tab is coupled to the first sub-flexible circuit board coupling 3222, the second board-to-board connector 3232 and the second switch circuit 3224 are disposed on the second sub-flexible circuit board 3223, and the first switch circuit 3221 and the first board-to-board connector 3231 are disposed on the flexible circuit board.

The structure of the battery 320 shown in fig. 9 is an exemplary one, and is not limited to the embodiment of the present application.

As can be appreciated from fig. 8 and fig. 9, in the power supply system 300 provided in this embodiment of the present application, the second switch circuit 3224 is disposed between the positive electrode tab and the second positive end, and the second control circuit 313 is disposed in the main board 310, so that when the battery core 321 fails, the first control circuit 312 may generate the first control signal to control the turn-off of the first switch circuit 3221, and meanwhile, the second control circuit 313 may generate the second control signal to control the turn-off of the second switch circuit 3224, so that the safety of the battery core 321 can be further ensured, and the reliability of the power supply system 300 can be further improved. Meanwhile, the second switch circuit 3224 adopts a P-type MOS transistor with low level conduction, and can reduce loss compared with an N-type MOS transistor with high level conduction.

In one possible embodiment, as shown in fig. 8, the battery 320 further includes a tamper chip 330, and the at least one board-to-board connector 323 further includes a third board-to-board connector 3233, where the third board-to-board connector 3233 is used to connect the tamper chip 330 and the motherboard 310.

Specifically, the anti-counterfeit chip 330 may include a first end, a second end and a data end, and the third board-to-board connector 3233 may include a first power supply end, a first ground end, a first data end, a second power supply end corresponding to the first power supply end, a second ground end corresponding to the first ground end, and a second data end corresponding to the first data end. The first end of the anti-counterfeit chip 330 is coupled to the second power supply terminal, the second end is coupled to the second ground terminal, and the data terminal is coupled to the second data terminal.

The main board 310 is configured to supply power to the anti-counterfeit chip 330 through the first power supply terminal and the first ground terminal, and further configured to read anti-counterfeit information in the anti-counterfeit chip 330 from the first data terminal, thereby determining authenticity of the battery 320.

Alternatively, the tamper chip 330 may be disposed in the flexible circuit board 322, or, when the flexible circuit board 322 includes the first and second sub-flexible circuit boards 3222 and 3223, the tamper chip may be disposed in any one of the sub-flexible circuit boards, where space permits, or, when the flexible circuit board 322 further includes the third sub-flexible circuit board 3225, the tamper chip 330 may be disposed in the third sub-flexible circuit board 3225, the third sub-flexible circuit board 3225 being for connecting the main board 310 with the tamper chip 330. The embodiment of the present application is exemplified by the case where the security chip 330 is disposed in the third sub flexible circuit 3225.

At this time, the structure of the battery 320 may be as shown in fig. 9, the battery 320 is connected to the third sub-flexible circuit board 3225, and the anti-counterfeit chip 330 and the third board-to-board connector 3233 are disposed in the third sub-flexible circuit board 3225, so that the main board 310 may read the anti-counterfeit information in the anti-counterfeit chip 330 through the third board-to-board connector 3233 to determine whether the battery 320 is authentic or not. The battery 320 may further include a collision preventing device 340, where the collision preventing device 340 is disposed on a side wall of the positive electrode tab and the negative electrode tab of the battery cell 321, and the collision preventing device 340 is used for protecting the battery cell.

The power supply system 300 provided by the embodiment of the application can be used for judging the authenticity of the battery 320 by arranging the anti-counterfeiting chip 330, and can protect the battery cell 321 by arranging the anti-collision device 340, so that the battery cell is prevented from being mechanically impacted and bumped, and the safety of the battery cell 321 can be ensured.

Based on this, as shown in fig. 3, the embodiment of the present application further provides a battery 320, where the battery 320 includes a battery cell 321, a flexible circuit board 322, and at least one board-to-board connector 323, where the battery cell 321 is coupled with the flexible circuit board 322, and the at least one board-to-board connector 323 is used for the main board 310 and the flexible circuit board 322, and the flexible circuit board 322 includes a first switch circuit 3221. The first switch circuit 3221 is configured to receive a first control signal, where the first control signal is configured to control on or off of the first switch circuit 3221 to control the battery cell 321 to supply power to the load 311.

According to the battery 320 provided by the embodiment of the application, the first switch circuit 3221 is arranged in the flexible circuit board 322, and the first switch circuit 3221 receives the first control signal generated by the main board 310, so that a loop between the battery cell 321 and the load 311 is conducted or turned off, and the protective plate 130 is not required to be arranged, therefore, the volume of the battery cell 321 can be increased, the capacity of the battery 320 can be improved, and the cruising ability and the user experience of the electronic equipment are improved.

At this time, the structure of the battery 320 is the structure of the battery 320 as shown in fig. 5, and the battery 320 provided in this embodiment of the present application receives the first control signal through the first switch end of the first board-to-board connector 3231, and controls the on and off of the first switch circuit 3221, so that the loop between the battery core 321 and the load 311 is turned on or off, without setting the protection board 130, so that the volume of the battery core 321 can be increased, the capacity of the battery 320 is improved, and the cruising ability and the user experience of the electronic device are improved.

At this time, the structure of the battery 320 may be the structure of the battery 320 as shown in fig. 7, and in the battery 320 provided in this embodiment of the present application, by setting the first negative terminal and the first enabling terminal in the first board-to-board connector 3231 and setting the first positive terminal in the second board-to-board connector 3232, so that the current flowing through the second board-to-board connector 3232 between the positive tab and the first positive terminal may have a larger current value, the current flowing through the first board-to-board connector 3231 between the negative tab and the first negative terminal may have a larger current value, and the heat generating points may be dispersed in the first board-to-board connector 3231 and the second board-to-board connector 3232, so that the rated charging current and the rated power when the battery 320 is charged may be improved, and the user experience may be improved. Meanwhile, the first negative terminal and the first enable terminal are provided in the first board-to-board connector 3231, and the first positive terminal is provided in the second board-to-board connector 3232, so that in a fault scenario in which water inflow causes a total short circuit of terminals in the board-to-board connector, the possibility that the second positive terminal in the second board-to-board connector 3232 is short circuited with the first enable terminal and the second negative terminal in the first board-to-board connector 3231 can be reduced, and the safety of the battery cell 321 can be ensured.

In one possible embodiment, as shown in fig. 8, the flexible circuit board 322 further includes a second switch circuit 3224, where the second switch circuit 3224 includes a first end, a second end, and a controlled end, and the at least one board-to-board connector 323 further includes a second switch end, and a second enable end corresponding to the second switch end, and in this case, the structure of the battery 320 may be the structure of the battery 320 as shown in fig. 9.

The structure of the battery 320 in fig. 8 and the structure of the battery 320 shown in fig. 9 are exemplary, and are not limited to the embodiment of the present application.

According to the battery 320 provided by the embodiment of the application, when the battery cell 321 breaks down, the first control signal can be received through the first switch end to control the first switch circuit 3221 to be turned off, and meanwhile, the second control signal is received through the second switch circuit to control the second switch circuit 3224 to be turned off, so that the safety of the battery cell 321 can be further ensured, and the reliability of the power supply system 300 can be further improved. Meanwhile, the second switch circuit 3224 adopts a P-type MOS transistor with low level conduction, and can reduce loss compared with an N-type MOS transistor with high level conduction.

The battery 320 that this application embodiment provided can be used for judging the true and false of battery 320 through setting up anti-fake chip 330, can protect electric core 321 through setting up buffer 340, prevents that electric core from appearing mechanical impact and colliding with, can ensure the safety of electric core 321.

It should be noted that, in the above embodiments, the descriptions about the power system 300 and the battery 320 may be correspondingly incorporated into the embodiment of the battery 320, and the embodiments of the present application are not repeated herein.

Based on this, as shown in fig. 10, the embodiment of the present application further provides an electronic device 1000, where the electronic device 1000 includes a load 1100 and a power supply system 1200, and the power supply system 1200 is used to provide power to the load 1100, and the structure of the power supply system 1200 may be the structure of the power supply system 300 as shown in fig. 3, 4, 6 and 8.

Optionally, the types of the electronic device 1000 include a smart phone, a tablet computer, and a notebook computer.

In the electronic device 1000 provided by the embodiment of the present application, the first switch circuit 3221 is disposed in the flexible circuit board 322, and the first switch circuit 3221 receives the first control signal generated by the main board 310, so that the loop between the battery core 321 and the load 311 is turned on or off, and the protection board 130 is not required to be disposed, so that the volume of the battery core 321 can be increased, the capacity of the battery 320 can be increased, and the cruising ability and the user experience of the electronic device 1000 are improved.

It should be noted that, in the above embodiments, the descriptions about the power system 300 and the battery 320 may be correspondingly incorporated into the embodiment of the electronic device 1000, and the embodiments of the application are not repeated herein.

The foregoing is merely a specific embodiment of the present application, but the protection scope of the present application is not limited thereto, and any changes or substitutions within the technical scope of the present disclosure should be covered in the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A power system comprising a motherboard and a battery, the battery comprising a battery core, a flexible circuit board, and at least one board-to-board connector, the battery core coupled to the flexible circuit board, the at least one board-to-board connector for connecting the motherboard and the flexible circuit board, the flexible circuit board comprising a first switching circuit;

the main board is used for generating a first control signal;

the first switch circuit is used for receiving the first control signal, and the first control signal is used for controlling the on-off state of the first switch circuit so as to control the battery cell to supply power for a load.

2. The power system of claim 1, wherein the electrical core comprises a positive tab and a negative tab, the at least one board-to-board connector comprising a first positive terminal, a first negative terminal, a first switch terminal, a second positive terminal corresponding to the first positive terminal, a second negative terminal corresponding to the first negative terminal, and a first enable terminal corresponding to the first switch terminal; the first switch circuit comprises a first end, a second end and a controlled end;

the first end of the first switch circuit is coupled with the negative electrode lug of the battery cell, the second end of the first switch circuit is coupled with the second negative end, the controlled end of the first switch circuit is coupled with the first enabling end, the positive electrode lug of the battery cell is coupled with the second positive end, the first positive end and the first negative end are used for being coupled with the load, and the first switch end is used for receiving the first control signal.

3. The power system of claim 1, wherein the electrical cell comprises a positive tab and a negative tab, and the at least one board-to-board connector comprises a first board-to-board connector and a second board-to-board connector; the first board-to-board connector comprises a first negative end, a first switch end, a second negative end corresponding to the first negative end and a first enabling end corresponding to the first switch end, and the second board-to-board connector comprises a first positive end and a second positive end corresponding to the first positive end; the first switch circuit comprises a first end, a second end and a controlled end;

4. A power supply system according to claim 2 or 3, wherein the motherboard comprises a first control circuit comprising a first protection chip and a first current sensing resistor, the first protection chip comprising a first end, a second end and a control end;

one end of the first negative terminal and one end of the first current detection resistor are coupled with the first end of the first protection chip, the other end of the first current detection resistor is coupled with the second end of the first protection chip, and the control end of the first protection chip is coupled with the first switch end;

the first protection chip is used for determining a first current flowing through the first current detection resistor according to the voltages at two ends of the first current detection resistor, and generating the first control signal according to the first current.

5. The power system of any of claims 2-4, wherein the flexible circuit board further comprises a second switching circuit comprising a first end, a second end, and a controlled end, the at least one board-to-board connector further comprising a second switching end, and a second enable end corresponding to the second switching end;

the first end of the second switch circuit is coupled with the positive electrode lug of the battery cell, the second end of the second switch circuit is coupled with the second positive end, the controlled end of the second switch circuit is coupled with the second enabling end, the second switch end is used for receiving a second control signal, and the second control signal is used for controlling the second switch circuit to be turned on or off so as to control the battery cell to supply power for the load.

6. The power system of claim 5, wherein the motherboard further comprises a second control circuit comprising a second protection chip and a second current sensing resistor, the second protection chip comprising a first end, a second end, and a control end;

one end of the first positive end and one end of the second current detection resistor are coupled with the first end of the second protection chip, the other end of the second current detection resistor is coupled with the second end of the second protection chip, and the control end of the second protection chip is coupled with the second switch end;

The second protection chip is used for determining a second current flowing through the second current detection resistor according to the voltages at two ends of the second current detection resistor, and generating the second control signal according to the second current.

7. The power system of any one of claims 1-6, wherein the battery further comprises a tamper chip, the at least one board-to-board connector further comprising a third board-to-board connector for connecting the tamper chip and the motherboard;

the main board is used for reading the anti-counterfeiting information of the anti-counterfeiting chip and determining the authenticity of the battery according to the anti-counterfeiting information.

8. The power system of any one of claims 1-7, wherein the battery further comprises a bump guard disposed on a side wall of the battery cell on the positive and negative tabs side, the bump guard for protecting the battery cell.

9. The power supply system according to any one of claims 5 to 8, wherein the first switching circuit includes a first transistor and a first resistor, and the second switching circuit includes a second transistor and a second resistor;

a first end of the first transistor, one end of the first resistor is coupled with a first end of the first switch circuit, a second end of the first transistor, the other end of the first resistor is coupled with a second end of the first switch circuit, and a third end of the first transistor is coupled with a controlled end of the first switch circuit;

The first end of the second transistor, one end of the second resistor and the first end of the second switch circuit are coupled, the second end of the second transistor, the other end of the second resistor and the second end of the second switch circuit are coupled, and the third end of the second transistor and the controlled end of the second switch circuit are coupled.

10. A battery comprising a battery cell, a flexible circuit board, and at least one board-to-board connector, the battery cell coupled to the flexible circuit board, the at least one board-to-board connector for connecting a motherboard and the flexible circuit board, the flexible circuit board comprising a first switching circuit;

the first switch circuit is used for receiving a first control signal, and the first control signal is used for controlling the on-off state of the first switch circuit so as to control the battery cell to supply power for a load.

11. The battery of claim 10, wherein the electrical core comprises a positive tab and a negative tab, the at least one board-to-board connector comprising a first positive terminal, a first negative terminal, a first switch terminal, a second positive terminal corresponding to the first positive terminal, a second negative terminal corresponding to the first negative terminal, and a first enable terminal corresponding to the first switch terminal; the first switch circuit comprises a first end, a second end and a controlled end;

12. The battery of claim 10, wherein the cell comprises a positive tab and a negative tab, and the at least one board-to-board connector comprises a first board-to-board connector and a second board-to-board connector;

the first board-to-board connector comprises a first negative end, a first switch end, a second negative end corresponding to the first negative end and a first enabling end corresponding to the first switch end, and the second board-to-board connector comprises a first positive end and a second positive end corresponding to the first positive end; the first switch circuit comprises a first end, a second end and a controlled end;

the first end of the first switch circuit is coupled with the negative electrode lug of the battery cell, the second end of the first switch is coupled with the second negative end, the controlled end of the first switch circuit is coupled with the first enabling end, the positive electrode lug of the battery cell is coupled with the second positive end, the first positive end and the first negative end are used for being coupled with the load, and the first switch end is used for receiving the first control signal.

13. The battery of claim 11 or 12, wherein the flexible circuit board further comprises a second switching circuit comprising a first end, a second end, and a controlled end, the at least one board-to-board connector further comprising a second switching end, and a second enable end corresponding to the second switching end;

14. The battery of any of claims 10-13, further comprising a tamper chip, the at least one board-to-board connector further comprising a third board-to-board connector for connecting the tamper chip and the motherboard.

15. The battery of any of claims 10-14, further comprising a bump guard disposed on a side wall of the cell on the positive and negative tabs side, the bump guard for protecting the cell.

16. The battery of any of claims 13-15, wherein the first switching circuit comprises a first transistor and a first resistor, and the second switching circuit comprises a second transistor and a second resistor;

17. An electronic device comprising a load and a power supply system for providing power to the load, the power supply system being a power supply system according to any one of claims 1-9.