Terminal device, battery management method, chip and computer program product

Abstract

The invention provides terminal equipment, a battery management method, a chip and a computer program product. The terminal equipment comprises a charging port, a circuit board, a first battery, a second battery, a control circuit deployed on the circuit board, and a temperature sensor. The first battery and the second battery are distributed on two sides of the circuit board; the charging port is arranged on one side surface of the terminal equipment; a first side edge of the circuit board is provided with a plurality of first battery interfaces, and a second side edge of the circuit board is provided with a plurality of second battery interfaces; the first battery and the second battery are electrically connected with the multiple first battery interfaces in a one-to-one correspondence mode, the charging port and the second battery interface are oppositely arranged, and the temperature sensor is used for detecting the temperature of the first battery and the temperature of the second battery and sending temperature data of the first battery and the temperature data of the second battery to the control circuit; and the control circuit is used for controlling the terminal equipment to be in a single-battery working mode or a multi-battery working mode according to the temperatures of the first battery and the second battery.

Description

Technical Field

[0001] This application belongs to the technical field of charging, and more specifically, relates to a terminal device, a battery management method, a chip, and a computer program product. Background Art

[0002] Generally, a terminal device is provided with a Type-C interface, which is a USB Type-C interface for plugging and unplugging a data cable to supply electrical energy to a battery inside the terminal device. For example, a mobile phone, as a commonly used terminal device, when the display interface is at a normal viewing angle, the Type-C interface is located at the bottom of the mobile phone, the battery connector inside the mobile phone is located in the upper half of the mobile phone, and the voltage conversion circuit inside the mobile phone is also far from the Type-C interface. The charging path of the mobile phone extends from the bottom to the top, and the charging path is relatively long, resulting in large heat loss. Especially when the charging current remains unchanged, the greater the charging power, the greater the heat loss, leading to problems such as slow charging and serious heating. Summary of the Invention

[0003] The purpose of the embodiments of this application is to provide a terminal device, a battery management method, a chip, and a computer program product, so as to reduce the heating of the battery in a scenario where the charging path loss of the terminal device is reduced.

[0004] To achieve the above purpose, the technical solution adopted in this application is:

[0005] In a first aspect, the embodiments of this application provide a terminal device, which includes: a charging port, a circuit board, a first battery, a second battery, a control circuit deployed on the circuit board, and a temperature sensor connected to the control circuit; along a first direction, the first battery and the second battery are distributed on both sides of the circuit board; the terminal device has at least one side parallel to the first direction, and the charging port is provided on the side; the circuit board has at least two first side edges along the first direction and at least two second side edges along a second direction, the first side edges are provided with a plurality of first battery interfaces, and the second side edges are provided with a plurality of second battery interfaces; the first battery and the second battery are respectively electrically connected to the plurality of first battery interfaces in one-to-one correspondence, the charging port and the second battery interface are oppositely arranged, and the charging port is used to pass through an external charging connector to allow the external charging connector to be electrically connected to the second battery interface, where the second direction is perpendicular to the first direction; the temperature sensor is disposed in the gap between the first battery and the second battery and the middle frame of the terminal device respectively; the temperature sensor is used to detect the temperatures of the first battery and the second battery, and to send the temperature data of the first battery and the second battery to the control circuit; the control circuit: is used to control the terminal device to be in a single-battery working mode or a multi-battery working mode according to the temperatures of the first battery and the second battery.

[0006] In some embodiments, the terminal device further includes a first switch module disposed on the circuit board. The first switch module is electrically connected to the control circuit, the first battery, and the second battery respectively. The control circuit is configured to control the conduction or cutoff of the first switch module. The first switch module is configured to conduct the path between the series circuit formed by the first battery and the second battery and the charging circuit or the discharging circuit, so that the terminal device is in the multi-battery working mode. Or, the first switch module is configured to conduct the path between any one of the first battery and the second battery and the charging circuit or the discharging circuit, so that the terminal device is in the single-battery working mode.

[0007] Implementing whether the charging circuits or discharging circuits of the first battery and the second battery are conducted through the switch module can not only improve the switching flexibility, but also prevent the batteries from operating in an inappropriate state.

[0008] In some embodiments, the first switch module includes a first switch device, a second switch device, and a third switch device electrically connected to the control circuit. The second switch device is connected in series between the positive electrodes of the first battery and the second battery.

[0009] The first switch device is also electrically connected to the positive electrodes of the first battery and the second battery. The third switch device is connected in series between the negative electrode of the first battery and the control circuit.

[0010] When the second switch device, the first switch device, and the third switch device are all closed, the terminal device is in the multi-battery working mode. When the second switch device is open and any one of the first switch device and the third switch device is closed and the other is open, the terminal device is in the single-battery working mode.

[0011] In some embodiments, the terminal device further includes a third battery. The terminal device further includes a second switch module electrically connected to the control circuit.

[0012] The second switch module is configured to conduct the path between the series circuit formed by the third battery, the first battery, and the second battery and the charging circuit or the discharging circuit, so that the terminal device is in the multi-battery working mode. Or,

[0013] The first switch module is further configured to conduct the path between any one of the third battery, the first battery, and the second battery and the charging circuit or the discharging circuit, so that the terminal device is in the single-battery working mode.

[0014] The second switch module is configured to conduct the path between the series circuit formed by any two of the third battery, the first battery, and the second battery and the charging circuit or the discharging circuit, so that the terminal device is in the dual-battery working mode.

[0015] In some embodiments, the second switch module includes: a fourth switch device, a fifth switch device, and a sixth switch device electrically connected to the control circuit;

[0016] The fourth switch device is also electrically connected to the second battery and the third battery. A sixth switch device is connected in series between the negative electrode of the third battery and the control circuit. The fifth switch device is electrically connected to the negative electrode of the third battery, the positive electrode of the first battery, and the control circuit; The positive electrode of the third battery is also electrically connected to the first switch device.

[0017] In some embodiments, the terminal device further includes: at least one charging circuit, the charging circuit includes a charging chip, and a control switch, the control switch has a drain, a source, and a gate; The gate of the control switch is electrically connected to the control circuit; One end of the charging chip is electrically connected to the first battery and the second battery respectively; The other end of the charging chip is electrically connected to one of the drain and the source, and the other of the drain and the source is electrically connected to the charging port.

[0018] In some embodiments, the terminal device further includes: an overvoltage protection chip deployed on the circuit board, the overvoltage protection chip is connected in series between the other of the drain and the source and the charging port.

[0019] In some embodiments, the overvoltage protection chip is arranged between the second battery interface and the charging chip along the second direction, and the overvoltage protection chip is arranged between two charging chips along the first direction.

[0020] In some embodiments, the terminal device includes: two charging circuits arranged in parallel; The charging chips in the two charging circuits are arranged in the middle area along the second direction on the circuit board, and the two charging chips are arranged on both sides of the center line extending along the second direction on the circuit board, and the two charging chips respectively correspond to the first battery interfaces electrically connected thereto along the first direction.

[0021] In some embodiments, the terminal device includes: one charging circuit;

[0022] The charging chip in the charging circuit is arranged in the middle area of the circuit board, the overvoltage protection chip is arranged between the charging port and the charging chip along the second direction, and the charging chip corresponds to the first battery interface electrically connected thereto along the second direction.

[0023] In some embodiments, the circuit board is arranged in the middle area of the terminal device along the first direction, the second battery interface is arranged in the middle area of the circuit board along the first direction, and the charging port is arranged in the middle area of the side edge along the first direction.

[0024] In some embodiments, any one of the first battery and the second battery and the third battery are arranged on one side of the circuit board along the first direction, and the other of the first battery and the second battery is arranged on the other side of the circuit board along the first direction.

[0025] In some embodiments, the terminal device further includes a third battery and a fourth battery. The first battery and the fourth battery are disposed on one side of the circuit board along the first direction, and the second battery and the third battery are disposed on the other side of the circuit board along the first direction.

[0026] In some embodiments, the temperature sensor includes a first temperature sensor component and a second temperature sensor component. The first temperature sensor component is used to detect the temperature of the first battery. The second temperature sensor component is used to detect the temperature of the second battery. Both the first temperature sensor component and the second temperature sensor component are connected to the control circuit.

[0027] In some embodiments, when the first condition is met, the terminal device is configured to control the terminal device to be in a single-battery operating mode through the control circuit. Among them, the single-battery operating mode means that one of the first battery and the second battery is in the operating mode and the other battery stops working. The first condition includes: the temperature of one of the first battery and the second battery is less than or equal to a second preset value, and the temperature of the other battery is greater than the second preset value. When the second condition is met, the terminal device is configured to control the terminal device to be in a multi-battery operating mode through the control circuit. The multi-battery operating mode is: both the first battery and the second battery are in the operating mode; the second condition includes: the temperatures of both the first battery and the second battery are lower than (i.e., less than or equal to) the second preset value.

[0028] In some embodiments, when the first battery and / or the second battery is in the operating mode and the temperature of the first battery and / or the second battery is greater than the first preset value, the terminal device is further configured to control the charging current or the discharging current of the first battery and / or the second battery to decrease through the control circuit, where the first preset value is less than the second preset value.

[0029] In a second aspect, an embodiment of the present application provides a battery management method, which is applied to the terminal device described in the first aspect or various possible implementation manners of the first aspect above. The method includes: the terminal device respectively obtains the temperature of the first battery and the temperature of the second battery. The terminal device controls the conduction or cut-off of the charging and discharging circuit of the first battery and controls the conduction or cut-off of the charging and discharging circuit of the second battery according to the temperature of the first battery and the temperature of the second battery.

[0030] In some embodiments, the terminal device controls the conduction or cut-off of the charging and discharging circuit of the first battery and controls the conduction or cut-off of the charging and discharging circuit of the second battery according to the temperature of the first battery and the temperature of the second battery, including:

[0031] If the temperature of either the first battery or the second battery is greater than the second preset value and the temperature of the other battery is less than or equal to the second preset value, then control the charge and discharge circuit of the other battery with a lower temperature among the second battery and the first battery to conduct and control the charge and discharge circuit of the battery with a higher temperature to cut off; or,

[0032] If the temperature of the first battery and the temperature of the second battery are both less than or equal to the second preset value, then control the charge and discharge circuit of the first battery to conduct, and control the charge and discharge circuit of the second battery to conduct, where the first preset value is less than the second preset value.

[0033] In some embodiments, when the temperature of the first battery and / or the second battery is greater than the first preset value, the terminal device reduces the charge and discharge current of the first battery and the second battery when controlling the charge and discharge circuit of the first battery to conduct, and / or, controlling the charge and discharge circuit of the second battery to conduct.

[0034] In some embodiments, the method provided by the embodiments of the present application further includes:

[0035] If the temperature of the first battery is lower than the first preset value and the temperature of the second battery is lower than the first preset value, then control the path between the first battery and the second battery to conduct.

[0036] In a third aspect, an embodiment of the present application provides a terminal device, including a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, it implements the battery management method described in the above second aspect or a possible implementation manner of the second aspect.

[0037] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium storing a computer program, and when the computer program is executed by a processor, it implements the battery management method described in the above second aspect or a possible implementation manner of the second aspect.

[0038] In a fifth aspect, an embodiment of the present application provides a computer program product, which when running on a test device, enables the terminal device to execute the battery management method described in the above second aspect or a possible implementation manner of the second aspect.

[0039] In a sixth aspect, an embodiment of the present application provides a chip, which includes at least one processor, and the processor is used to read and execute the computer program stored in the memory to execute the method in the second aspect or any possible implementation manner of the second aspect.

[0040] Optionally, the chip further includes a memory, which is connected to the processor through a circuit or wire. Optionally, the chip further includes a communication interface. The communication interface is used for communicating with other modules outside the chip.

[0041] The beneficial effects of the terminal device provided in this application are as follows:

[0042] In the terminal device provided in the embodiment of this application, the circuit board is arranged between the first battery and the second battery along the first direction. The circuit board has two first side edges oppositely arranged in the first direction and two first battery interfaces respectively arranged on the two first side edges, and has a second side edge in the second direction and a second battery interface arranged on the second side edge. The first battery and the second battery are respectively electrically connected to the two first battery interfaces. The charging port and the second battery interface are arranged on the same side in the second direction and are directly opposite and conductively arranged. The charging port is used to pass through an external charging connector to allow the external charging connector to be electrically connected to the second battery interface. The charging path of the terminal device extends a certain distance along the second direction and enters the first battery and the second battery along the first direction. Compared with the existing charging path extending along the first direction, the path length of the charging path can be shortened, and the heat loss can be reduced, so that the charging can be accelerated and the heat generation of the device can be reduced. In addition, since the control circuit can also control whether the terminal device is in a single-battery working mode or a multi-battery working mode according to the temperatures of the first battery and the second battery, the heat generation of the battery can be further reduced. Description of the Drawings

[0043] In order to more clearly illustrate the technical solutions in the embodiments of this application, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings in the following description are only some embodiments of this application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0044] Figure 1 It is a schematic diagram of the overall structure of the terminal device provided in an embodiment of this application;

[0045] Figure 2 It is an exploded view of the terminal device provided in an embodiment of this application;

[0046] Figure 3 It is a schematic diagram of the structure of the terminal device provided in an embodiment of this application;

[0047] Figure 4 It is a schematic diagram of the circuit structure inside the terminal device provided in an embodiment of this application Figure 1 ;

[0048] Figure 5 It is an exploded view of the terminal device provided in an embodiment of this application;

[0049] Figure 6 Exploded view of a terminal device provided by an embodiment of the present application;

[0050] Figure 7 Schematic diagram of the circuit structure inside the terminal device provided by an embodiment of the present application Figure 2 ;

[0051] Figure 8 Exploded view of a terminal device provided by an embodiment of the present application;

[0052] Figure 9 Exploded view of a terminal device provided by an embodiment of the present application;

[0053] Figure 10 Schematic diagram of the circuit structure inside the terminal device provided by an embodiment of the present application Figure 3 ;

[0054] Figure 11 Flowchart of a battery management method provided by an embodiment of the present application. Detailed implementation manners

[0055] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application clearer and more understandable, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0056] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0057] It should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present application.

[0058] In addition, the terms "first" and "second" are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more such features. In the description of this application, "a plurality of" means two or more unless otherwise specifically defined. It should be understood that in the embodiments of this application, "electrically connected" can be understood as physical contact and electrical conduction between components; it can also be understood as a form of connection between different components in a circuit structure through physical lines such as copper foils or wires of a printed circuit board (PCB) that can transmit electrical signals.

[0059] Now, the terminal device 1000 and the charging method provided by the embodiments of this application will be described.

[0060] The terminal device 1000 provided by the embodiments of this application includes, but is not limited to, any device that requires wired charging, such as mobile phones, tablet computers, laptop computers, wearable devices, AR devices, or VR devices, etc. The terminal device 1000 has multiple batteries, and the embodiments of this application do not limit this. This application will take a mobile phone as the terminal device 1000 for detailed description.

[0061] Before introducing the terminal device provided by the embodiments of this application, first in combination with Figures 1 to 3 description, taking the terminal device 1000 as a mobile phone as an example, the structure of the mobile phone provided by the embodiments of this application will be described.

[0062] As Figures 1 to 3 shown, the terminal device 1000 provided by the embodiments of this application includes a charging port 1131, a circuit board 101, at least two batteries 102 (for example, a first battery 1021 and a second battery 1022). The circuit board 101 has a control circuit 1014 (such as a CPU or SOC) and a temperature sensor connected to the control circuit 1014. The circuit board 101 is arranged between the first battery 1021 and the second battery 1022 in a first direction, that is, the first battery 1021 and the second battery 1022 are distributed on both sides of the circuit board 101. The terminal device 1000 has at least one side surface in a second direction, and the at least one side surface is parallel to the first direction. The charging port 1131 is arranged on the side surface; the circuit board 101 and the battery 102 extend along a plane perpendicular to a third direction.

[0063] The circuit board 101 has at least two first side edges along a first direction and at least two second side edges along a second direction. Among them, a plurality of first battery interfaces 1011a are provided on the first side edges. At least one second battery interface 1011b is provided on the second side edges. The first battery 1021 and the second battery 1022 are respectively electrically connected to two first battery interfaces 1011a. The charging port 1131 and the second battery interface 1011b are oppositely arranged. Specifically, the charging port 1131 and the second battery interface 1011b are oppositely arranged along the first direction or the second direction. The charging port 1131 is used for passing through an external charging connector to allow the external charging connector to be electrically connected to the second battery interface 1011b.

[0064] As an example, the second direction is perpendicular to the first direction.

[0065] The temperature sensor is used to detect the temperatures of the first battery 1021 and the second battery 1022, and to send the temperature data of the first battery 1021 and the second battery 1022 to the control circuit 1014.

[0066] The control circuit 1014: is used to control the terminal device 1000 to be in a single-battery working mode or a multi-battery working mode according to the temperatures of the first battery 1021 and the second battery 1022.

[0067] Optionally, the temperature sensor is arranged in the gaps between the first battery 1021 and the second battery 1022 and the middle frame of the terminal device 1000 respectively.

[0068] In the single-battery working mode in the embodiments of the present application, it means that only one battery in the terminal device 1000 is in a charging or discharging state. In the multi-battery working mode in the embodiments of the present application, it means that at least two batteries in the terminal device 1000 are in a charging or discharging state. The multi-battery working mode may include a dual-battery power supply mode, a triple-battery power supply mode, a quadruple-battery power supply mode, a quintuple-battery power supply mode, etc. It can be understood that in the multi-battery working mode, at least two batteries can be connected in series or in parallel, and the embodiments of the present application do not limit this.

[0069] It can be understood that if there are three batteries in the terminal device 1000, namely the first battery 1021, the second battery 1022 and the third battery, if two of the first battery 1021, the second battery 1022 and the third battery are in a charging or discharging state, then the terminal device 1000 is in a dual-battery working mode. If the first battery 1021, the second battery 1022 and the third battery are all in a charging state or a discharging state, then the terminal device 1000 is in a triple-battery power supply mode.

[0070] If there are four batteries in the terminal device 1000, namely the first battery 1021, the second battery 1022, the third battery, and the fourth battery, and only two of the first battery 1021, the second battery 1022, the third battery, and the fourth battery are in a charging or discharging state, then the terminal device 1000 is in a dual-battery working mode. If three of the first battery 1021, the second battery 1022, the third battery, and the fourth battery are in a charging state or a discharging state, then the terminal device 1000 is in a triple-battery power supply mode. If all of the first battery 1021, the second battery 1022, the third battery, and the fourth battery are in a charging state or a discharging state, then the terminal device 1000 is in a quadruple-battery power supply mode.

[0071] The circuit board 101 is an FPC (Flexible Printed Circuit board), also known as a charging control board, a charging circuit board, or a charging management board, which is used to manage and control the charging process. Its main function is to ensure the safety, speed, accuracy, and stability of the charging process.

[0072] The first battery interface 1011a and the second battery interface 1011b refer to the connection positions of the FPC B-B (Flexible Printed Circuit Board-Back to Back). One first battery interface 1011a is used to electrically connect to the first battery 1021, and the other first battery interface 1011a is used to electrically connect to the second battery 1022. The second battery interface 1011b is docked with the charging port of the data cable. Among them, for a single battery 102, the number of the first battery interfaces 1011a can be one, or two or more. Generally, a single battery 102 can be electrically connected to the circuit board 101 through a single FPC B-B or through a dual FPC B-B.

[0073] The battery 102 refers to a rechargeable electrochemical energy storage device that specifically provides power support for the terminal device 1000. For example, the battery of a mobile phone can be a lithium-ion battery.

[0074] As Figure 1 shown, the first direction (Y direction), the second direction (X direction), and the third direction (Z direction) can respectively refer to the height direction, the width direction, and the thickness direction of the terminal device 1000. The plane of the third direction refers to the board surface of the terminal device 1000.

[0075] The terminal device 1000 provided by an embodiment of the present application, in which the circuit board 101 is arranged between the first battery 1021 and the second battery 1022 along a first direction. The circuit board 101 has two first side edges oppositely arranged in the first direction and two first battery interfaces 1011a respectively arranged on the two first side edges, and has a second side edge in a second direction and a second battery interface 1011b arranged on the second side edge. The first battery 1021 and the second battery 1022 are respectively electrically connected to the two first battery interfaces 1011a. The charging port 1131 and the second battery interface 1011b are arranged on the same side in the second direction and are directly opposite and conductively arranged. The charging port is used to pass through an external charging connector to allow the external charging connector to be electrically connected to the second battery interface. The charging path of the terminal device 1000 extends a certain distance along the second direction and enters the first battery 1021 and the second battery 1022 along the first direction. Compared with the existing charging path extending along the first direction, the path length of the charging path can be shortened, and the heat loss can be reduced, so that the charging can be accelerated and the heat generation of the device can be reduced. In addition, since the control circuit can also control whether the terminal device is in a single-battery working mode or a multi-battery working mode according to the temperatures of the first battery 1021 and the second battery 1022, the heat generation of the battery can be further reduced.

[0076] Table 1

[0077]

[0078]

[0079] Table 2

[0080]

[0081]

[0082] Comparing Table 1 and Table 2, it can be seen that when the terminal device 1000 adopts the structure of the present application, since the charging path is shortened compared with the case where the charging port is located at the bottom of the terminal device housing in the prior art, the resistance value on the FPC can be reduced from 20 milliohms to 5 milliohms. Therefore, the power loss generated by the transmission of current on the FPC is also reduced accordingly. In addition, since the distance between the charging port and the circuit board is shortened, the resistance value between the charging port and the circuit board is also reduced from 20 milliohms to 5 milliohms. Therefore, the power loss generated by the transmission of current is also reduced accordingly. Therefore, the charging efficiency of the solution of the present application is improved compared with the prior art.

[0083] In an application, the milliohm terminal device can be any device including a charging port 1131 and at least two batteries, and can implement charging and data interaction functions through the charging port. For example, a mobile phone, a tablet computer. The charging port 1131 can be a standard USB interface, a micro USB interface, a mini USB interface, a Dock interface, a Lightning interface, or a Type C interface. The first battery 1021 and the second battery 1022 can be rechargeable batteries of any type according to actual needs. For example, rechargeable lithium-ion batteries.

[0084] In an embodiment of the present application, the terminal device 1000 may further include a battery cover 113, a display screen 105, and a middle frame 109.

[0085] Among them, the battery cover 113 can also be called the rear cover. The battery cover 113 can be a metal rear cover, a glass rear cover, a plastic rear cover, or a ceramic rear cover. In an embodiment of the present application, the material of the battery cover 113 is not limited.

[0086] The middle frame 109 is disposed between the battery cover 113 and the terminal screen 105. A receiving space for accommodating the battery is formed between the battery cover 113 and the middle frame 109.

[0087] The middle frame 109 may include a top side and a bottom side disposed opposite to each other (i.e., along the width direction, i.e., the second direction), and a left frame and a right frame disposed opposite to each other and located between the top side and the bottom side (i.e., along the length direction, i.e., the first direction). It can be understood that the charging port 1131 can be disposed on any one of the left frame and the right frame.

[0088] For example, the charging port 1131 can be disposed in the middle of any one of the left frame and the right frame, so that the charging path of the two batteries can be shortened compared with the prior art in which the charging port 1131 is disposed at the bottom of the frame of the terminal device.

[0089] In addition, optionally, a switch button and / or a volume button are further disposed on any one of the left frame and the right frame of the middle frame 109.

[0090] The material of the middle frame 109 can be a metal material or a non-metal material. Among them, the metal material can be a stainless steel material or a titanium alloy, and the non-metal material can be a plastic or a ceramic. It should be noted that the material of the middle frame 109 includes but is not limited to the above materials.

[0091] It can be understood that the structure illustrated in the embodiments of the present application does not constitute a specific limitation on the terminal device 1000. In other embodiments of the present application, the terminal device 1000 may include more or fewer components than those illustrated, or combine certain components, or split certain components, or have different component arrangements. For example, the terminal device 1000 may further include devices such as a camera (e.g., a front camera and a rear camera) and a flash.

[0092] In some embodiments, the terminal device 1000 is a mobile phone. The terminal device 1000 may further include a terminal screen 105, a heat dissipation film 106, a heat pipe 107, an adhesive layer 108, a middle frame 109, a first thermal gel layer 110, a shielding layer 111, and a second thermal gel layer 112 that are stacked. These layers are disposed in the bottom cover 113, and the charging port 1131 penetrates through the side wall of the bottom cover 113. Among them, the second thermal gel layer 112 is disposed on the side of the circuit board 101 where the charging chip 1012 is located.

[0093] It can be understood that as Figure 2 or Figure 3 shown, the terminal device 1000 in the embodiments of the present application may further include a sound generating unit, and the sound generating unit is disposed on the side of the battery 102 away from the circuit board 101. For example, if the terminal device 1000 includes two sound generating units, one of the two sound generating units is disposed on the side of the first battery 1021 away from the circuit board 101, and the other sound generating unit is disposed on the side of the second battery 1022 away from the circuit board 101.

[0094] In some embodiments, the circuit board 101 is disposed in the middle area of the terminal device 1000 along the first direction, the second battery interface 1011b is disposed in the middle area of the circuit board 101 along the first direction, and the charging port 1131 is disposed in the middle area of the side edge along the first direction.

[0095] In this way, the charging port 1131 and the circuit board 101 are located in the middle area of the terminal device 1000 along the first direction. Charging paths can extend from this middle area to both sides in the first direction, and the paths of the charging circuits on both sides can be shortened. Moreover, the core heat generation area of charging is located in the middle area of the terminal device 1000, and heat can be dissipated from the central position to the surroundings, so the overall heat dissipation efficiency of the machine is relatively high.

[0096] It should be noted that being located in the middle area of the terminal device 1000 along the first direction does not refer to the exact middle area in a strict sense. The charging port 1131 and the circuit board 101 can be offset along the first direction. For example, in Figure 1 , the charging port 1131 and the circuit board 101 can be offset upward or downward along the first direction. Among them, in the second direction, the circuit board 101 can also be offset along the second direction.

[0097] In some embodiments, the circuit board 101 may further include at least one charging circuit. For example, the charging circuit may include a charging chip (such as a Power Management IC (PMIC)) and a control switch. At least one charging circuit is connected in series between the charging port 1131 and the plurality of batteries 102. The charging circuit is used to transfer the charging current to the battery and to change the charging mode of the battery 102 in the charging scenario. For example, the charging mode may be 1:1, 2:1, or 4:1, etc. The embodiments of the present application do not limit this.

[0098] The control switch in any charging circuit may be connected to the control circuit, and the control circuit is used to control the conduction of the path between the charging port 1131 and at least one charging circuit in the charging scenario, so that the charging circuit is used to transfer the charging current to the battery.

[0099] For example, as Figures 2 to 10 shown, in the embodiments of the present application, a charging chip 1012a, an eleventh switching device 110 connected to the charging chip 1012a, and a twelfth switching device 120 may be included. Among them, the third ends (such as gates) of the eleventh switching device 110 and the twelfth switching device 120 are connected to the control circuit, and the second ends (such as sources or drains) of the eleventh switching device 110 and the twelfth switching device 120 are connected to the charging port 1131. The first end (such as a drain or a source) of the eleventh switching device 110 is connected to the charging chip 1012a; the first end (such as a drain or a source) of the twelfth switching device 120 is connected to the charging chip 1012b.

[0100] As Figure 2 shown, two charging chips (i.e., the charging chip 1012a and the charging chip 1012b) are arranged in the middle area of the circuit board 101 along the second direction, and the two charging chips are arranged on both sides of the center line extending along the second direction of the control circuit. The two charging chips respectively correspond to the first battery interfaces 1011a electrically connected thereto along the first direction.

[0101] The charging chip refers to a PMIC. As a highly integrated chip, it is responsible for the distribution, conversion, monitoring, and management of electrical energy in the terminal device 1000 to ensure that each battery 102 of the terminal device 1000 can obtain a stable, efficient, and demand-compliant power supply. For example, when the battery 102 has a low power level, the charging chip will increase the charging current, thereby accelerating the charging speed; when the battery 102 is nearly full, the charging chip will gradually reduce the current to prevent overcharging from damaging the battery 102.

[0102] In a possible embodiment of the present application, as Figure 2As shown, the circuit board 101 further includes an overvoltage protection chip 1013. The overvoltage protection chip 1013 is disposed between the second battery interface 1011b and the charging chips 1012a and 1012b along the second direction, and the overvoltage protection chip 1013 is disposed between the two charging chips 1012 along the first direction.

[0103] As Figures 2 to 10 shown, the overvoltage protection chip 1013 is connected in series between the charging port 1131 and the second ends of the eleventh switching device 110 and the twelfth switching device 120.

[0104] The overvoltage protection chip 1013 refers to an OVP (Over Voltage Protection) chip, which is used to protect the terminal device 1000 from damage caused by excessive voltage.

[0105] The center line extending along the second direction on the circuit board 101 refers to a virtual line that extends along the second direction on the circuit board 101 and divides the circuit board 101 into two substantially identical parts along the first direction, and the positions of the two charging chips are described with the help of this virtual line.

[0106] By setting the positions of the first battery interface 1011a, the overvoltage protection chip 1013, the charging chips 1012a and 1012b, and the second battery interface 1022 as described above, the charging path is made more reasonable and shortened, and the heat loss is reduced, so that the charging can be accelerated and the heat generation of the device can be reduced.

[0107] In some embodiments, as Figure 2 and Figure 3 shown, the circuit board 101 includes charging chips 1012a and 1012b and an overvoltage protection chip 1013. The circuit board 101 has a first side and a first battery interface 1011a, and a second side and a second battery interface 1011b. The charging chips 1012a and 1012b are disposed in the middle area of the circuit board 101. The overvoltage protection chip 1013 is disposed between the charging port 1131 and the charging chips 1012a and 1012b along the second direction. The charging chips 1012a and 1012b correspond to the first battery interface 1011a to which they are electrically connected along the first direction.

[0108] In the solution with only one charging chip, by setting the positions of the first battery interface 1011a, the overvoltage protection chip 1013, the charging chip, and the second battery interface 1011b as described above, the charging path is made more reasonable and shortened, and the heat loss is reduced, so that the charging can be accelerated and the heat generation of the device can be reduced.

[0109] In some embodiments, the circuit board 101 includes two charging chips 1012, two control switches, a control circuit 1014, and an overvoltage protection chip 1013. The control switch has a drain, a source, and a gate. The two charging chips 1012 are connected in parallel. One end of the charging chip 1012a and the charging chip 1012b are electrically connected through a connection point, and the first battery 1021 and the second battery 1022 are respectively electrically connected to the connection point; the other ends of the charging chip 1012a and the charging chip 1012b are electrically connected to one of the drain and the source, and the other of the drain and the source is electrically connected to the overvoltage protection chip 1013; the control circuit 1014 is respectively electrically connected to the gate, the first switching device 10, the third switching device 20, and the second switching device 50.

[0110] The control circuit 1014 refers to a SOC (System on a Chip), which integrates an electronic system with multiple functions on a single chip and is used to execute various computing tasks and control instructions.

[0111] For example, the control circuit 1014 is used to control the first switching device 10 connected in series between the charging chip 1012a and the first battery 1021 to turn on or off the charging path of the first battery 1021. Or, the control circuit 1014 is used to control the third switching device 20 connected in series between the charging chip 1012b and the second battery 1022 to turn on or off the charging path of the second battery 1022.

[0112] The two control switches are respectively an eleventh switching device 110 and a twelfth switching device 120. By controlling the eleventh switching device 110 and the twelfth switching device 120, the number of charging chips in the circuit can be selected. For example, when both the eleventh switching device 110 and the twelfth switching device 120 are in the on state, the number of charging chips in the circuit is two. When one of the eleventh switching device 110 and the twelfth switching device 120 is in the on state and the other is in the off state, the number of charging chips in the circuit is one.

[0113] The above-mentioned switching device can be a logic switching switch, a single MOS transistor, or an integrated unit module with a switching function.

[0114] In some embodiments, as Figure 2 and Figure 3 shown, the terminal device 1000 includes two batteries 102, a first battery 1021 (such as BAT1) and a second battery 1022 (such as BAT2). The circuit board 101 is disposed between the first battery 1021 and the second battery 1022 along a first direction. Among them, the charging circuits of the first battery 1021 and the second battery 1022 are as Figure 4 shown.

[0115] The terminal device 1000 further includes a first switch module deployed on the circuit board 101. The first switch module is respectively connected to the control circuit, the first battery 1021, and the second battery 1022. The conduction or cutoff of the first switch module is controlled by the control circuit.

[0116] The first switch module is used to connect the series circuit composed of the first battery 1021 and the second battery 1022 to the charging circuit or the discharging circuit, so that the terminal device 1000 is in the multi-battery working mode.

[0117] The first switch module is further used to connect any one of the first battery 1021 and the second battery 1022 to the charging circuit or the discharging circuit, so that the terminal device 1000 is in the single-battery working mode.

[0118] As Figure 4 shown, the first switch module includes a first switch device 10, a second switch device 50, and a third switch device 20 connected to the control circuit 1014. The second switch device 50 is connected in series between the positive electrodes of the first battery 1021 and the second battery 1022. The first switch device 10 is also connected to the positive electrodes of the first battery 1021 and the second battery 1022. The third switch device 20 is connected in series between the negative electrode of the first battery 1021 and the control circuit.

[0119] 1. Multi-battery working mode

[0120] For example, as Figure 4 shown, the second switch device 50 is closed (i.e., conducting), the first switch device 10 and the third switch device 20 are open, and the terminal device 1000 is in the multi-battery working mode.

[0121] It can be understood that in the multi-battery working mode scenario, the second switch device 50 is closed, and the first battery 1021 and the second battery 1022 are connected in series for charging or discharging.

[0122] Optionally, the second switch device 50 is closed, the eleventh switch device 110 and the twelfth switch device 120 are conducting, the first switch device 10 and the third switch device 20 are open, the first battery 1021 and the second battery 1022 are in a series state, and the charging chips 1012a and 1012b are in a 4:2 working mode state.

[0123] 2. Single-battery working mode

[0124] The second switch device 50 is open, and any one of the first switch device 10 and the third switch device 20 is closed and the other is open, and the terminal device 1000 is in the single-battery working mode.

[0125] For example, when the second switching device 50 is turned off, the first switching device 10 is turned on, and the third switching device 20 is turned off, the first battery 1021 is in a charging state or a discharging state at this time, so the terminal device 1000 is in a single-battery working mode.

[0126] For example, when the second switching device 50 is turned off, the first switching device 10 is turned off, and the third switching device 20 is turned on, the second battery 1022 is in a charging state or a discharging state at this time, so the terminal device 1000 is in a single-battery working mode.

[0127] The charging system in the single-battery working mode in the scenario of having two batteries in the terminal device 1000 will be described below.

[0128] (1) 4:1 charging system in single-battery working mode

[0129] At this time, the first switching device 10, the eleventh switching device 110, and the twelfth switching device 120 are turned on, the third switching device 20 and the second switching device 50 are cut off, only the first battery 1021 is charged, and the charging chips 1012a and 1012b are in a 4:1 working mode state.

[0130] (2) 4:1 charging system in single-battery working mode

[0131] At this time, the third switching device 20, the eleventh switching device 110, and the twelfth switching device 120 are turned on, the first switching device 10 and the second switching device 50 are cut off, only the second battery 1022 is charged, and the charging chips 1012a and 1012b are in a 4:1 working mode state.

[0132] (3) 2:1 charging system in single-battery working mode

[0133] At this time, the first switching device 10, the eleventh switching device 110, and the twelfth switching device 120 are turned on, the third switching device 20 and the second switching device 50 are cut off, only the first battery 1021 is charged, and the charging chips 1012a and 1012b are in a 2:1 working mode state.

[0134] (4) 2:1 charging system in single-battery working mode

[0135] At this time, the third switching device 20, the eleventh switching device 110, and the twelfth switching device 120 are turned on, the first switching device 10 and the second switching device 50 are cut off, only the second battery 1022 is charged, and the charging chips 1012a and 1012b are in a 2:1 working mode state.

[0136] (5) 1:1 charging system in single-battery working mode

[0137] At this time, the first switching device 10, the eleventh switching device 110, and the twelfth switching device 120 are turned on, the third switching device 20 and the second switching device 50 are turned off, only the first battery 1021 is charged, and the charging chips 1012a and 1012b are in a 1:1 operating mode state.

[0138] (6) 1:1 charging system in single-battery operating mode

[0139] At this time, the third switching device 20, the eleventh switching device 110, and the twelfth switching device 120 are turned on, the first switching device 10 and the second switching device 50 are turned off, only the second battery 1022 is charged, and the charging chips 1012a and 1012b are in a 1:1 operating mode state.

[0140] It should be noted that whether in the single-battery operating mode or the dual-battery operating mode, the number of charging chips can be variable. For example, in the single-battery operating mode, both the eleventh switching device 110 and the twelfth switching device 120 are in the on state. For example, in the dual-battery operating mode, one of the eleventh switching device 110 and the twelfth switching device 120 is in the on state, and the other is in the off state.

[0141] In some embodiments, as Figure 5 and Figure 6 shown, the terminal device 1000 includes three batteries 102. Two of the three batteries 102 can be distributed on one side of the circuit board 101 along the first direction and arranged along the second direction, and the other battery 102 is distributed on the other side of the circuit board 101 along the first direction.

[0142] As Figure 5 shown, Figure 5 Taking the three batteries 102 including the first battery 1021, the second battery 1022, and the third battery 1023 as an example. The second battery 1022 and the third battery 1023 are arranged on one side of the circuit board 101 along the first direction and arranged along the second direction, and the first battery 1021 is arranged on the other side of the circuit board 101 along the first direction.

[0143] Figure 6 Different from Figure 5 is that the first battery 1021 and the third battery 1023 are arranged on one side of the circuit board 101 along the first direction and arranged along the second direction, and the second battery 1022 is arranged on the other side of the circuit board 101 along the first direction.

[0144] Among them, the charging circuits of the three batteries 102 are as Figure 7 shown, as Figure 7 shown, the terminal device 1000 may further include:

[0145] The second switching module is used to implement the conduction of the path between the series circuit composed of the third battery, the first battery, and the second battery and the charging circuit or the discharging circuit, so that the terminal device is in the multi-battery working mode; or,

[0146] The first switching module is further used to conduct the path between any one of the third battery, the first battery, and the second battery and the charging circuit or the discharging circuit, so that the terminal device 1000 is in the single-battery working mode;

[0147] The second switching module is used to implement the conduction of the path between the series circuit composed of any two of the third battery, the first battery, and the second battery and the charging circuit or the discharging circuit, so that the terminal device 1000 is in the dual-battery working mode.

[0148] As an example, the second switching module includes: a fourth switching device 80, a fifth switching device 60, and a sixth switching device 30. The fourth switching device 80, the fifth switching device 60, and the sixth switching device 30 are all connected to the control circuit, and the conduction or cut-off of the fourth switching device 80, the fifth switching device 60, and the sixth switching device 30 is controlled by the control circuit.

[0149] The first switching device 10 is further connected to the positive electrode of the third battery 1023, the fourth switching device 80 is further connected to the control circuit and the second battery 1022 and the third battery 1023, a sixth switching device 30 is connected in series between the negative electrode of the third battery 1023 and the control circuit, and the fifth switching device 60 is connected to the negative electrode of the third battery 1023, the positive electrode of the first battery 1021, and the control circuit.

[0150] When the first switching device 10, the second switching device 50, and the fifth switching device 60 are closed and the third switching device 20, the fourth switching device 80, and the sixth switching device 30 are open, the terminal device 1000 is in the three-battery working mode; the multi-battery working mode includes the three-battery working mode; or,

[0151] When one of the second switching device 50, the fifth switching device 60, and the fourth switching device 80 is closed and the other two and the first switching device 10, the third switching device 20, and the sixth switching device 30 are open, the terminal device 1000 is in the dual-battery working mode; the multi-battery working mode includes the dual-battery working mode; or,

[0152] When one of the first switching device 10, the second switching device 50, and the sixth switching device 30 is closed and the other two and the third switching device 20, the fifth switching device 60, and the fourth switching device 80 are open, the terminal device 1000 is in the single-battery working mode.

[0153] Optionally, regardless of whether the terminal device 1000 is in a single-battery working mode, a dual-battery working mode, or a triple-battery working mode in the triple-battery mode, in a charging scenario, the eleventh switching device 110 and the twelfth switching device 120 are turned on, and at this time, the charging chip 1012a and the charging chip 1012b are in a working mode state of 1:1 or 2:1 or 4:1.

[0154] The working mode states of the charging chip 1012a and the charging chip 1012b include but are not limited to the above working modes.

[0155] In some embodiments, as Figures 8 to 9 shown, the terminal device 1000 includes four batteries 102. Two batteries 102 are arranged on one side of the circuit board 101 along the first direction and arranged along the second direction, and the other two batteries 102 are arranged on the other side of the circuit board 101 along the first direction and arranged along the second direction. Among them, the circuit diagrams of the four batteries 102 are as Figure 8 shown.

[0156] As an example, the four batteries 102 may include a first battery 1021, a second battery 1022, a third battery 1023, and a fourth battery 1024.

[0157] As Figure 8 shown, the first battery 1021 and the second battery 1022 are arranged on one side of the circuit board 101 along the first direction and arranged along the second direction. In addition, the third battery 1023 and the fourth battery 1024 are arranged on the other side of the circuit board 101 along the first direction and arranged along the second direction.

[0158] Alternatively, in a possible embodiment of the present application, the terminal device 1000 includes four batteries 102. One battery 102 is arranged on one side of the circuit board 101 along the first direction, and the other three batteries 102 are arranged on the other side of the circuit board 101 along the first direction and arranged along the second direction. Among them, the circuit diagrams of the four batteries 102 are as shown in FIG. 9.

[0159] As Figure 9 shown, the first battery 1021 is arranged on one side of the circuit board 101 along the first direction, and the second battery 1022, the third battery 1023, and the fourth battery 1024 are arranged on the other side of the circuit board 101 along the first direction and arranged along the second direction.

[0160] It can be understood that in the case where the terminal device 1000 has more batteries, the arrangement of the multiple batteries 102 may refer to the above Figure 8 or Figure 9 shown solutions, and the embodiments of the present application do not make any limitations in this regard.

[0161] As Figure 10As shown, the terminal device 1000 may further include: a seventh switching device 40, an eighth switching device 70, a ninth switching device 90, and a tenth switching device 100. Among them, the seventh switching device 40, the eighth switching device 70, the ninth switching device 90, and the tenth switching device 100 are all electrically connected to the control circuit 1014, and the conduction or cutoff of the seventh switching device 40, the eighth switching device 70, the ninth switching device 90, and the tenth switching device 100 is controlled by the control circuit 1014.

[0162] When the terminal device 1000 is in the four-battery working mode, the second switching device 50, the fifth switching device 60, and the eighth switching device 70 are in the conduction state, and the first switching device 10, the third switching device 20, the sixth switching device 30, the seventh switching device 40, the fourth switching device 80, the ninth switching device 90, and the tenth switching device 100 are in the cutoff state.

[0163] When the terminal device 1000 is in the three-battery working mode, the second switching device 50 and the fifth switching device 60 are in the conduction state, and the first switching device 10, the third switching device 20, the sixth switching device 30, the seventh switching device 40, the eighth switching device 70, the fourth switching device 80, the ninth switching device 90, and the tenth switching device 100 are in the cutoff state. Or, when the terminal device 1000 is in the three-battery working mode, the fifth switching device 60 and the eighth switching device 70 are in the conduction state, and the first switching device 10, the third switching device 20, the sixth switching device 30, the seventh switching device 40, the second switching device 50, the fourth switching device 80, the ninth switching device 90, and the tenth switching device 100 are in the cutoff state. Or, when the terminal device 1000 is in the three-battery working mode, the second switching device 50 and the ninth switching device 90 are in the conduction state, and the first switching device 10, the third switching device 20, the sixth switching device 30, the seventh switching device 40, the fifth switching device 60, the seventh switching device 40, the eighth switching device 70, and the tenth switching device 100 are in the cutoff state. Or, when the terminal device 1000 is in the three-battery working mode, the eighth switching device 70 and the fourth switching device 80 are in the conduction state, and the first switching device 10, the third switching device 20, the sixth switching device 30, the seventh switching device 40, the second switching device 50, the fifth switching device 60, the ninth switching device 90, and the tenth switching device 100 are in the cutoff state.

[0164] When the terminal device 1000 is in the dual-battery working mode, one of the second switching device 50, the fifth switching device 60, the eighth switching device 70, the fourth switching device 80, the ninth switching device 90, and the tenth switching device 100 is in the conduction state, and the other five and the first switching device 10, the third switching device 20, the sixth switching device 30, and the seventh switching device 40 are in the cutoff state.

[0165] When the terminal device 1000 is in the single-battery working mode, one of the first switching device 10, the third switch 20, the sixth switching device 30, and the seventh switching device 40 is in the conducting state, and the other three and the second switching device 50, the fifth switching device 60, the eighth switching device 70, the fourth switching device 80, the ninth switching device 90, and the tenth switching device 100 are in the cut-off state.

[0166] The control circuit 1014 is electrically connected to the first switching device 10, the second switching device 50, the third switching device 20, the fourth switching device 80, the fifth switching device 60, the sixth switching device 30, the seventh switching device 40, the eighth switching device 70, the ninth switching device 90, and the tenth switching device 100 respectively, and is used to control the conduction or cut-off of any switching device respectively.

[0167] In a possible embodiment of the present application, the control circuit 1014 is configured to control the terminal device 1000 to be in the single-battery working mode when the first condition is met. Among them, the single-battery working mode means that one of the first battery 1021 and the second battery 1022 is in the working mode and the other battery is controlled to stop working. The first condition includes: the temperature of one of the first battery 1021 and the second battery 1022 is less than or equal to the second preset value, and the temperature of the other battery is greater than the second preset value.

[0168] For example, if the temperature of the first battery 1021 in the first battery 1021 and the second battery 1022 is lower than the second preset value, and the temperature of the second battery 1022 is higher than the second preset value, then the switching device connected in series with the second battery 1022 is controlled to be disconnected, so as to disconnect the charging path or the discharging path of the second battery 1022, and the switching device connected in series with the first battery 1021 is controlled to be conducted to conduct the charging path or the discharging path of the first battery 1021, so that the terminal device 1000 is in the single-battery working mode.

[0169] For example, if the temperature of the second battery 1022 in the first battery 1021 and the second battery 1022 is lower than the second preset value, and the temperature of the first battery 1021 is higher than the second preset value, then the switching device connected in series with the first battery 1021 is controlled to be disconnected to disconnect the charging path or the discharging path of the first battery 1021, and the switching device connected in series with the second battery 1022 is controlled to be conducted to conduct the charging path or the discharging path of the second battery 1022, so that the terminal device 1000 is in the single-battery working mode.

[0170] In another embodiment of the present application, the first condition further includes: the temperature of one of the first battery 1021 and the second battery 1022 is less than or equal to the second preset value and less than the first preset value. Among them, the first preset value is less than the second preset value.

[0171] For example, if the first preset value is 40°, the second preset value is 55°, the temperature of the first battery 1021 is less than 40°, and the temperature of the second battery 1022 is greater than 55°, the switching device connected in series with the first battery 1021 can be controlled to disconnect, so that the charging path or discharging path of the first battery 1021 is disconnected, and the switching device connected in series with the second battery 1022 can be controlled to conduct, so that the charging path or discharging path of the second battery 1022 is conducted, so that the terminal device 1000 is in a single-battery working mode.

[0172] In a possible embodiment of the present application, the control circuit 1014 is configured to control the terminal device 1000 to be in a multi-battery working mode when the second condition is satisfied. Wherein, the multi-battery working mode means that both the first battery 1021 and the second battery 1022 are in operation. Wherein, the second condition includes: the temperatures of both the first battery 1021 and the second battery 1022 are lower than the second preset value. As an example, the second condition may include: the temperatures of both the first battery 1021 and the second battery 1022 are lower than the first preset value.

[0173] In a possible embodiment of the present application, when the temperatures of both the first battery 1021 and the second battery 1022 are higher than the second preset value, the control circuit 1014 can be configured to control both the first battery 1021 and the second battery 1022 to stop working, or control one battery to stop working and control the other battery to continue working after reducing the charging current or discharging current. During the stopping process of the first battery 1021 and the second battery 1022, the temperature sensor can periodically report the temperature data of the two to the control circuit 1014. When the control circuit 1014 determines that the temperature of the first battery 1021 and / or the second battery 1022 is lower than the second preset value, it can control the battery to be in the working mode.

[0174] In a possible embodiment of the present application, when the first battery 1021 and / or the second battery 1022 is in the working mode, the control circuit 1014 is further configured to determine whether to change the charging current or discharging current of the first battery 1021 and / or the second battery 1022 according to the temperature of the first battery 1021 and / or the second battery 1022.

[0175] For example, when the first battery 1021 and / or the second battery 1022 is in the working mode, when the temperature of the first battery 1021 and / or the second battery 1022 is greater than the first preset value, the terminal device is further configured to control the first battery 1021 and / or the second battery 1022 through the control circuit 1014, wherein the first preset value is less than the second preset value.

[0176] In a possible embodiment of the present application, the terminal device 1000 may pre-store the magnitudes of the charging current or discharging current corresponding to different temperatures. For example, when the temperature of any battery is less than or equal to a first preset value, the charging current or discharging current may be a first current value. When the temperature of any battery is greater than a second preset value, the charging current or discharging current may be a second current value. When the temperature of any battery is less than or equal to the second preset value and greater than the first preset value, the charging current or discharging current may be a third current value. The first current value is greater than the third current value which is greater than the second current value.

[0177] Therefore, if the first battery 1021 is in the working mode and the charging current or discharging current of the first battery 1021 at the current moment is the first current value and the temperature of the first battery 1021 is greater than the first preset value, the current value of the first battery 1021 can be reduced to the second current value.

[0178] For example, assume that the charging currents of the current first battery 1021 and the second battery 1022 are 10A. If the temperature of the current first battery 1021 is greater than the first preset value while the temperature of the second battery 1022 is less than the second preset value. For example, the first preset value is 40° and the second preset value is 60°. If the temperatures of the first battery 1021 and the second battery 1022 are between 40° and 60°, the terminal device 1000 can control the control circuit 1014 to reduce the charging currents of the first battery 1021 and the second battery 1022 to 5A.

[0179] In this way, the battery for charging or discharging can be flexibly selected according to the heat generation situation of the battery in the charging and discharging scenarios (i.e., the temperature during charging / discharging), enabling the terminal device to select and switch between the dual-battery working mode and the single-battery working mode, which can not only protect the battery but also flexibly regulate the temperature of the area where the battery is located.

[0180] For example, if the temperature of the first battery 1021 is higher than the first preset value and the temperature of the second battery 1022 is lower than the second preset value, then control the charging path / discharging path of the second battery 1022 to conduct and control the charging path / discharging path of the first battery 1021 to conduct. If the temperature of the first battery 1021 is lower than the first preset value and the temperature value of the second battery 1022 is higher than the second preset value, then control the charging path / discharging path of the first battery 1021 to conduct and control the charging path / discharging path of the second battery 1022 to cut off.

[0181] For example, when the terminal device is a mobile phone, the first battery 1021 and the second battery 1022 are respectively arranged on both sides of the mobile phone along the first direction. When the user holds the area where the first battery 1021 or the second battery 1022 is located, since the heat generation situation in the area where the first battery 1021 and the second battery 1022 are located can be flexibly adjusted, the user experience can be improved.

[0182] For another example, if the temperature of the first battery 1021 is lower than the first preset value and the temperature of the second battery 1022 is lower than the first preset value, then the charging path / discharging path between the first battery 1021 and the second battery 1022 is controlled to be turned on.

[0183] For another example, if the temperature of the first battery 1021 is higher than the second preset value and the temperature of the second battery 1022 is higher than the second preset value, then the charging path / discharging path between the first battery 1021 and the second battery 1022 is controlled to be turned off, and the charging path / discharging paths of the first battery 1021 and the second battery 102 are both controlled to be turned off.

[0184] In some embodiments, the terminal device 1000 further includes a first temperature sensor 103 and a second temperature sensor 104 that are respectively electrically connected to the control circuit 1014. The first temperature sensor 103 is used to collect the temperature of the first battery 1021 and report the temperature data of the first battery 1021 to the control circuit 1014. The second temperature sensor 104 is used to collect the temperature of the second battery 1022 and report the temperature data of the second battery 1022 to the control circuit 1014. The control circuit 1014 is used to control one of the first switch device 10, the third switch device 20, and the second switch device 50 to be turned on according to the temperatures of the first battery 1021 and the second battery 1022, and control the other two to be turned off.

[0185] The first temperature sensor 103 and the second temperature sensor 104 are respectively used to obtain the temperature of the first battery 1021 and the temperature of the second battery 1022. The changes in the temperature of the first battery 1021 and the temperature of the second battery 1022 include but are not limited to the heat generated by the battery 102 itself during the charging process, the heat generated by the battery due to the user holding the area where the battery is located, the different heat generation situations of the device when the screen is on and off, the specific usage situation of the device (such as games, non-games), and the ambient temperature of the device, etc.

[0186] As Figure 11 shown, Figure 11 A battery management method provided by an embodiment of the present application includes:

[0187] 1101. The terminal device respectively obtains the temperature of the first battery 1021 and the temperature of the second battery 1022.

[0188] For example, the control circuit 1014 in the terminal device can obtain the temperature data of the first battery collected by the first temperature sensor 103 and the temperature data of the second battery 1022 collected by the second temperature sensor 104, and then obtain the temperature of the battery based on the temperature data.

[0189] 1102. The terminal device controls the conduction or cut-off of the charge and discharge circuit of the first battery 1021 and the conduction or cut-off of the charge and discharge circuit of the second battery 1022 according to the temperature of the first battery 1021 and the temperature of the second battery 1022.

[0190] In a possible implementation manner of the present application, the charge and discharge circuit may include a charging circuit and a discharging circuit. In a charging scenario, the terminal device can control the conduction or cut-off of the charging circuit of the first battery 1021 or the second battery 1022. In a discharging scenario, the terminal device can control the conduction or cut-off of the discharging circuit of the second battery 1022 or the first battery 1021.

[0191] As an example, in a charging scenario, if the temperature of any one of the first battery 1021 and the second battery 1022 is greater than the second preset value and the temperature of the other battery is less than or equal to the second preset value, then control the charging path of any one battery to be cut off and control the charging path / discharging circuit of the other battery to be in a conducting state.

[0192] For example, if the temperature of the first battery is less than or equal to the second preset value and the temperature of the second battery is greater than the second preset value, then control the charging path / discharging circuit of the second battery to be cut off and control the charging path of the first battery to be conducting. If the temperature of the first battery is higher than the second preset value and the temperature of the second battery is lower than the second preset value, then control the charging path / discharging circuit of the second battery to be conducting and control the charging path / discharging circuit of the first battery to be cut off.

[0193] As an example, if the temperature of the first battery and the temperature of the second battery are both less than or equal to the second preset value, then control the charge and discharge circuit of the first battery to be conducting and control the charge and discharge circuit of the second battery to be conducting.

[0194] In a possible embodiment of the present application, when the terminal device controls the charge and discharge circuit of the first battery to be conducting, and / or controls the charge and discharge circuit of the second battery to be conducting, it can also reduce the charge and discharge current of the first battery and the second battery. Specifically, when the terminal device controls the charge and discharge circuit of the first battery to be conducting, and / or controls the charge and discharge circuit of the second battery to be conducting, the method further includes:

[0195] When the temperature of the first battery and / or the second battery is greater than the first preset value, reduce the charge and discharge current of the first battery and the second battery, where the first preset value is less than the second preset value.

[0196] As another example, if the temperature of the first battery is lower than or equal to the first preset value and the temperature of the second battery is lower than or equal to the first preset value, then control the charging path between the first battery and the second battery to be turned on.

[0197] As an example, in a discharging scenario, if the temperature of any one of the first battery and the second battery is higher than the second preset value, then control the discharging path of any one of the batteries to be cut off and control the discharging path of the other battery to be in an on state.

[0198] As an example, if the temperature of the first battery is lower than the first preset value and the temperature value of the second battery is lower than the second preset value, then control the charge-discharge circuit of the first battery to be turned on and control the charge-discharge circuit of the second battery to be turned on.

[0199] As an example, if the temperature of the first battery is lower than the first preset value and the temperature of the second battery is lower than the first preset value, then control the path between the first battery and the second battery to be turned on.

[0200] As an example, if the temperatures of both the second battery and the first battery are higher than the second preset value, then control the path between the first battery and the second battery to be disconnected.

[0201] The battery management method provided by the embodiments of the present application controls the conduction or disconnection of the charge-discharge paths of the first battery and the second battery according to the temperatures of the first battery and the second battery. In this way, charging can be flexibly selected according to the heat generation situation of the battery, which can not only protect the battery but also flexibly regulate the temperature of the area where the battery is located. For example, when this charging method is applied to a mobile phone, the first battery and the second battery are respectively arranged on both sides of the mobile phone along the first direction, and the user holds the area where the first battery or the second battery is located. Since the heat generation situation of the areas where the first battery and the second battery are located can be flexibly adjusted, the user experience can be improved.

[0202] The above are only the embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A terminal device, characterized in that: The terminal device includes: a charging port, a circuit board, a first battery, a second battery, a control circuit deployed on the circuit board, and a temperature sensor connected to the control circuit; Along a first direction, the first battery and the second battery are distributed on both sides of the circuit board; the terminal device has at least one side parallel to the first direction, and the charging port is provided on the side; The circuit board has at least two first side edges along the first direction and at least two second side edges along a second direction, the first side edges are provided with a plurality of first battery interfaces, and the second side edges are provided with a plurality of second battery interfaces; the first battery and the second battery are respectively electrically connected to the plurality of first battery interfaces in one-to-one correspondence, the charging port and the second battery interface are oppositely arranged, and the charging port is used for passing through an external charging connector to allow the external charging connector to be electrically connected to the second battery interface, wherein the second direction is perpendicular to the first direction; The temperature sensor is disposed in a gap between the first battery and the second battery and the middle frame of the terminal device respectively; The temperature sensor is used for detecting the temperatures of the first battery and the second battery, and for sending the temperature data of the first battery and the second battery to the control circuit; The control circuit: is used for controlling the terminal device to be in a single-battery working mode or a multi-battery working mode according to the temperatures of the first battery and the second battery.

2. The terminal device according to claim 1, wherein The terminal device further includes a first switch module deployed on the circuit board, and the first switch module is respectively electrically connected to the control circuit, the first battery and the second battery; the control circuit is used for controlling the conduction or cutoff of the first switch module; The first switch module is used for conducting a path between a series circuit formed by the first battery and the second battery and a charging circuit or a discharging circuit, so that the terminal device is in the multi-battery working mode; and / or, The first switch module is used for conducting a path between any one of the first battery and the second battery and a charging circuit or a discharging circuit, so that the terminal device is in the single-battery working mode.

3. The terminal device according to claim 1 or 2, characterized in that, The terminal device further includes a third battery, and the terminal device further includes a second switch module electrically connected to the control circuit, The second switch module is used for conducting a path between a series circuit formed by the third battery, the first battery and the second battery and a charging circuit or a discharging circuit, so that the terminal device is in the multi-battery working mode; or, The first switch module is further used for conducting a path between any one of the third battery, the first battery and the second battery and a charging circuit or a discharging circuit, so that the terminal device is in the single-battery working mode; The second switch module is used for conducting a path between a series circuit formed by any two of the third battery, the first battery and the second battery and a charging circuit or a discharging circuit, so that the terminal device is in a dual-battery working mode.

4. The terminal device according to claim 1 or 2, characterized in that The terminal device further includes: at least one charging circuit, the charging circuit includes a charging chip, and a control switch, the control switch has a drain, a source and a gate; the gate of the control switch is electrically connected to the control circuit; One end of the charging chip is electrically connected to the first battery and the second battery respectively; the other end of the charging chip is electrically connected to one of the drain and the source, and the other of the drain and the source is electrically connected to the charging port.

5. The terminal device according to claim 4, characterized in that The terminal device further includes: an overvoltage protection chip deployed on the circuit board, the overvoltage protection chip is connected in series between the other of the drain and the source and the charging port.

6. The terminal device according to claim 3, wherein: Any one of the first battery and the second battery and the third battery are arranged on one side of the circuit board along the first direction, and the other of the first battery and the second battery is arranged on the other side of the circuit board along the first direction; Or, The terminal device further includes a third battery and a fourth battery, the first battery and the fourth battery are arranged on one side of the circuit board along the first direction, and the second battery and the third battery are arranged on the other side of the circuit board along the first direction.

7. The terminal device according to claim 1 or 2, characterized in that, When a first condition is met, the terminal device is configured to control the terminal device to be in the single-battery working mode through the control circuit, and the single-battery working mode means that one of the first battery and the second battery is in the working mode and the other battery stops working; the first condition includes: the temperature of one of the first battery and the second battery is less than or equal to a second preset value, and the temperature of the other battery is greater than the second preset value; When a second condition is met, the terminal device is configured to control the terminal device to be in the multi-battery working mode through the control circuit, and the multi-battery working mode means that both the first battery and the second battery are in the working mode; the second condition includes: the temperatures of both the first battery and the second battery are less than or equal to the second preset value.

8. A battery management method, characterized in that, Applied to the terminal device according to any one of claims 1 to 7, the method includes: Obtaining the temperature of the first battery and the temperature of the second battery respectively; Controlling the on or off of the charge and discharge circuit of the first battery and controlling the on or off of the charge and discharge circuit of the second battery according to the temperature of the first battery and the temperature of the second battery.

9. The method according to claim 8, wherein The controlling the on or off of the charge and discharge circuit of the first battery and controlling the on or off of the charge and discharge circuit of the second battery according to the temperature of the first battery and the temperature of the second battery includes: If the temperature of any one of the first battery and the second battery is greater than the second preset value and the temperature of the other battery is less than or equal to the second preset value, then controlling the charge and discharge circuit of the other battery with the lower temperature among the second battery and the first battery to be turned on and controlling the charge and discharge circuit of the any battery with the higher temperature to be turned off; or, If the temperature of the first battery and the temperature of the second battery are both less than or equal to a second preset value, then control the charge and discharge circuit of the first battery to conduct, and control the charge and discharge circuit of the second battery to conduct.

10. The method according to claim 9, characterized in that, When controlling the charge and discharge circuit of the first battery to conduct, and / or, when controlling the charge and discharge circuit of the second battery to conduct, the method further includes: When the temperature of the first battery and / or the second battery is greater than a first preset value, reduce the charge and discharge current of the first battery and the second battery, where the first preset value is less than the second preset value.

11. A terminal device, characterized in that, The terminal device includes a memory and a processor. The memory is used to store instructions, and the processor is used to execute the instructions stored in the memory. And the execution of the instructions stored in the memory causes the processor to execute the method according to any one of claims 8 to 10.

12. A chip, characterized in that, The chip includes at least one processor and a communication interface. The communication interface is coupled to the at least one processor. The at least one processor is used to run a computer program or instructions to implement the method according to any one of claims 8 to 10.

13. A computer program product, characterized in that, Instructions are stored in the computer program product. When the instructions run on a computer, the computer is caused to implement the method according to any one of claims 8 to 10 above.

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