Battery power supply system and method, storage medium and electronic equipment

Abstract

The invention relates to the technical field of battery power supply, and provides a battery power supply system and method, a storage medium and electronic equipment. The battery power supply system includes: a battery; the input end of the booster circuit is coupled with the output end of the battery, and the output end of the booster circuit is used for being coupled with a first electric device; the controller is coupled with the control end of the booster circuit; the controller is used for controlling the booster circuit to switch between a first mode and a second mode according to the first working temperature of the battery power supply system, in the first mode, the booster circuit directly applies the output voltage of the battery to the first electric device, and in the second mode, the booster circuit directly applies the output voltage of the battery to the second electric device; the booster circuit boosts the output voltage of the battery and then applies the boosted output voltage to the first electric device. It is guaranteed that the voltage applied to the first electric device can meet the electricity demand of the first electric device, the problem that part of functions of the mobile equipment are unavailable in the low-temperature environment is solved, and the user experience feeling is improved.

Description

Technical Field

[0001] The present disclosure relates to the field of battery power supply technology, and in particular to a battery power supply system, method, storage medium and electronic device. Background Art

[0002] With the development of mobile device technology, mobile devices have become items that users carry with them.

[0003] In the related art, when a mobile device is in a relatively cold environment, the battery performance of the mobile device is greatly affected by the temperature, causing some functions of the mobile device to be unavailable and a poor user experience. Summary of the Invention

[0004] To overcome the problems existing in the related art, the present disclosure provides a battery powered system, method, storage medium and electronic device.

[0005] According to a first aspect of an embodiment of the present disclosure, there is provided a battery powered system, comprising:

[0006] Battery;

[0007] a boost circuit, wherein an input end of the boost circuit is coupled to an output end of the battery, and an output end of the boost circuit is used to couple to a first electrical device;

[0008] a controller coupled to a control terminal of the boost circuit;

[0009] The controller is used to control the boost circuit to switch between a first mode and a second mode according to a first operating temperature of the battery-powered system, wherein in the first mode, the boost circuit directly applies the output voltage of the battery to the first electrical device, and in the second mode, the boost circuit boosts the output voltage of the battery and applies it to the first electrical device.

[0010] Optionally, the battery-powered system further includes a first temperature sensor for detecting the temperature of the battery. The controller is coupled to the first temperature sensor, and the controller uses the temperature of the battery as the first operating temperature of the battery-powered system.

[0011] Optionally, the battery-powered system also includes a mainboard, the power input terminal of the mainboard is coupled to the output terminal of the battery, and the power output terminal of the mainboard is used to couple to a second electrical device, and the minimum operating voltage of the second electrical device is lower than the minimum operating voltage of the first electrical device.

[0012] Optionally, the controller is configured to control the boost circuit to switch from the first mode to the second mode when the first operating temperature is lower than a first preset temperature value and the output voltage of the battery is lower than a preset voltage.

[0013] Optionally, the battery power supply system further includes a protection chip, and the output end of the battery is connected to the input end of the boost circuit through the protection chip;

[0014] The protection chip is used to reduce the over-discharge protection threshold voltage of the protection chip from a first voltage value to a second voltage value when the second operating temperature of the battery-powered system is lower than a second preset temperature value.

[0015] Optionally, the battery-powered system further includes a second temperature sensor for detecting the temperature of the battery. The protection chip is coupled to the second temperature controller, and the controller uses the temperature of the battery as the second operating temperature of the battery-powered system.

[0016] According to a second aspect of an embodiment of the present disclosure, a battery power supply method is provided, which is applied to the battery power supply system provided in the first aspect of the present disclosure, the method comprising:

[0017] Acquiring a first operating temperature of the battery-powered system;

[0018] controlling the boost circuit to switch between a first mode and a second mode according to the first operating temperature;

[0019] In the first mode, the boost circuit directly applies the output voltage of the battery to the first electrical device. In the second mode, the boost circuit boosts the output voltage of the battery and then applies it to the first electrical device.

[0020] Optionally, controlling the boost circuit to switch between the first mode and the second mode according to the first operating temperature includes:

[0021] When the first operating temperature is lower than a first preset temperature value and the output voltage of the battery is lower than a preset voltage, the boost circuit is controlled to switch from the first mode to the second mode.

[0022] According to a third aspect of an embodiment of the present disclosure, a computer-readable storage medium is provided, on which computer program instructions are stored. The program instructions are used by a controller in the battery-powered system provided by the first aspect of the present disclosure to execute the following method:

[0023] Acquiring a first operating temperature of the battery-powered system;

[0024] The boost circuit is controlled to switch between a first mode and a second mode according to the first operating temperature.

[0025] According to a fourth aspect of an embodiment of the present disclosure, an electronic device is provided, comprising: a processor; and a memory for storing processor-executable instructions; wherein the processor is configured to implement the battery power supply method provided in the second aspect of the present disclosure when executing the instructions.

[0026] The technical solutions provided by the embodiments of the present disclosure may have the following beneficial effects:

[0027] The controller controls the boost circuit to switch between a first mode, in which the battery's output voltage is directly applied to a first electrical device, and a second mode, in which the battery's output voltage is boosted and then applied to the first electrical device, based on the first operating temperature of the battery-powered system. When the first operating temperature is high, the battery's output voltage is directly applied to the first electrical device. When the first operating temperature is low, the battery's output voltage is boosted and then applied to the first electrical device. This ensures that the voltage applied to the first electrical device meets its power requirements, resolving the issue of some mobile device functions being unavailable in low-temperature environments and improving user experience.

[0028] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0030] Figure 1 is a schematic diagram showing a connection relationship of battery cells according to an exemplary embodiment.

[0031] Figure 2 is a schematic structural diagram of a battery according to an exemplary embodiment.

[0032] Figure 3 FIG. 1 is a front schematic diagram of a battery protection board according to an exemplary embodiment.

[0033] Figure 4 is a schematic diagram of the back side of a battery protection board according to an exemplary embodiment.

[0034] Figure 5 is a side view of a battery protection board according to an exemplary embodiment.

[0035] Figure 6 is a circuit diagram of a battery powered system according to an exemplary embodiment.

[0036] Figure 7 is a circuit diagram of another battery-powered system according to an exemplary embodiment.

[0037] Figure 8 The figure shows a battery-powered architecture according to an exemplary embodiment.

[0038] Figure 9 The figure is a block diagram of a battery powered system according to an exemplary embodiment.

[0039] Figure 10 FIG. 4 is a diagram showing another battery-powered architecture according to an exemplary embodiment.

[0040] Figure 11 is a block diagram showing another battery powered system according to an exemplary embodiment.

[0041] Figure 12 is a circuit diagram of another battery-powered system according to an exemplary embodiment.

[0042] Figure 13 is a circuit diagram of another battery-powered system according to an exemplary embodiment.

[0043] Figure 14 The figure is a flow chart showing a battery power supply method according to an exemplary embodiment. DETAILED DESCRIPTION

[0044] Exemplary embodiments will be described in detail herein, with examples illustrated in the accompanying drawings. In the following description, when referring to the drawings, identical numerals in different figures represent identical or similar elements, unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all possible embodiments consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.

[0045] The terms "first", "second", etc. used in this disclosure are intended to distinguish one element from another and do not have order or importance. In addition, in the following description, when referring to the drawings, unless otherwise explained, the same reference numerals in different drawings represent the same or similar elements.

[0046] Before introducing the specific implementation of the present disclosure, first, the application scenario of the present disclosure is described.

[0047] With the development of mobile device technology, mobile devices have become items that users carry with them.

[0048] In the related art, when a mobile device is in a relatively cold environment, the battery performance of the mobile device is greatly affected by the temperature, and the internal resistance of the battery increases, causing some functions of the mobile device to be unavailable and a poor user experience.

[0049] like Figure 1 The diagram shows the structure of the battery cell, where the battery cell is connected to the protection board through the positive and negative tabs. Figure 2 The figure shows a common battery structure. The battery consists of a battery cell and a battery protection board. The battery cell is connected to the nickel sheet on the protection board through the tab welding. The protection circuit is located on the battery protection board at the head of the battery. The battery is connected to the main board through a connector. Figures 3 to 5 This is a conventional protection board structure diagram. The designs of protection boards for different power ranges are usually different. Generally, the greater the power, the wider and thicker the printed circuit board (PCB) and flexible printed circuit board (FPC), and the smaller the internal resistance of the power device. The cost of protection boards with different designs is different. Figure 6 and Figure 7 This is a circuit diagram of a common battery-powered system, which is mainly composed of a power circuit, a protection module, an encryption module, and a power detection module. Figure 6 For example, the power circuit is composed of a battery cell, precision resistors Rs1, Rs2, MOS tubes Q1, Q2, Q3, and Q4. The motherboard power management IC charges the battery or the battery discharges the motherboard by connecting to P+ and P-; the protection module is composed of a first-stage protection decoder (Integrated Circuit, IC) and a second-stage protection IC and its peripheral resistor and capacitor components, which realize overcharge and over-discharge protection and charge and discharge overcurrent protection by controlling the conduction and disconnection of MOS tubes Q1, Q2 and Q3, Q4; the power detection unit is composed of a power meter and its peripheral resistor and capacitor components, which calculates the power by detecting the voltage of the precision resistor and the voltage of the battery cell; P1+, P2+, SDA, SCL, P1-, and P2- are connected to the protection board connectors A and B through the layout.

[0050] Figure 8The figure shows a conventional battery-powered architecture, where the battery is connected to the motherboard's Power Management Integrated Circuit (PMIC) via a connector, and the PMIC supplies power to various electrical devices. Electrical devices can include organic light-emitting diodes (OLEDs), audio, motors, radio frequency (RF), wireless local area network (Wifi) 5G FEMs, and near-field communication (NFC). Different electrical devices have different minimum operating voltages. Typically, the shutdown voltage of a mobile device depends on the maximum value of the lowest operating voltage among these electrical devices. For example, the shutdown voltage of a mobile phone is currently set to 3.2V. The battery voltage during discharge, Vpack, is calculated as Vcell - I*(Rcell + Rc), where Rcell is the internal resistance of the battery cell. The lower the temperature, the greater the Rcell. Rc protects the circuit impedance of the board, and Rc is unaffected by temperature. Therefore, at the same discharge current, the lower the temperature, the lower the battery voltage. For example, when the cell is static, the voltage Vcell is 3.6V. When it is discharged at 1A at room temperature, the battery voltage Vpack is 3.4V. However, when it is discharged at 1A at low temperature, the battery voltage Vpack will become 3.3V or even lower. This causes users to experience a situation where the battery level jumps from a high value to a low value or suddenly shuts down when using their mobile phones in low-temperature areas such as Northeast China in winter, resulting in a poor user experience.

[0051] To address the above technical issues, a controller controls the boost circuit to switch between a first mode in which the battery's output voltage is directly applied to a first electrical device and a second mode in which the battery's output voltage is boosted and then applied to the first electrical device, based on the first operating temperature of the battery-powered system. When the first operating temperature is high, the battery's output voltage is directly applied to the first electrical device. When the first operating temperature is low, the battery's output voltage is boosted and then applied to the first electrical device. This ensures that the voltage applied to the first electrical device meets the first electrical device's power requirements, resolving the issue of some mobile device functions being unavailable in low-temperature environments and improving the user experience.

[0052] Block diagram of a battery powered system. The battery powered system may include a battery 11 , a boost circuit 12 , and a controller 14 .

[0053] A boost circuit 12 has an input coupled to the output of the battery 11, and an output coupled to a first electrical device 13. The boost circuit 12 may be a Boost circuit 12. The first electrical device 13 may be a device with a high minimum operating voltage requirement, such as an OLED screen, an audio device, or an RF device. The first electrical device 13 may be adjusted based on the actual design.

[0054] The controller 14 is coupled to the control end of the boost circuit 12. The controller 14 is used to control the boost circuit 12 to switch between a first mode and a second mode according to the first operating temperature of the battery-powered system. In the first mode, the boost circuit 12 directly applies the output voltage of the battery 11 to the first electrical device 13. In the second mode, the boost circuit 12 boosts the output voltage of the battery 11 and applies it to the first electrical device 13.

[0055] The first operating temperature may be the temperature of the battery 11. In the first mode, the boost circuit 12 applies the output voltage of the battery 11 directly to the first electrical device 13. The boost circuit 12 may be in a bypass mode, acting as a conductor to apply the output voltage of the battery 11 directly to the first electrical device 13. In the second mode, the boost circuit 12 performs a boosting operation, boosting the output voltage of the battery 11 before applying it to the first electrical device 13.

[0056] According to the first operating temperature of the battery-powered system, the boost circuit 12 is controlled to switch between the first mode and the second mode. It can be understood that when the first operating temperature is lower than the first preset temperature, the boost circuit 12 is controlled to operate in the second mode, and when the first operating temperature is higher than or equal to the first preset temperature, the boost circuit 12 is controlled to operate in the first mode. According to different first operating temperatures, the operating mode of the boost circuit 12 is switched to power the first electrical device 13.

[0057] Based on the first operating temperature of the battery-powered system, the controller 14 controls the boost circuit 12 to switch between a first mode in which the output voltage of the battery 11 is directly applied to the first electrical device 13, and a second mode in which the output voltage of the battery 11 is boosted and then applied to the first electrical device 13. When the first operating temperature is high, the output voltage of the battery 11 is directly applied to the first electrical device 13. When the first operating temperature is low, the output voltage of the battery 11 is boosted and then applied to the first electrical device 13. This ensures that the voltage applied to the first electrical device 13 meets the power requirements of the first electrical device 13, resolving the issue of some functions being unavailable in mobile devices in low-temperature environments and improving the user experience.

[0058] In a possible implementation, the battery-powered system further includes a first temperature sensor 15 for detecting the temperature of the battery 11 . The controller 14 is coupled to the first temperature sensor 15 , and the controller 14 uses the temperature of the battery 11 as the first operating temperature of the battery-powered system.

[0059] The first temperature sensor 15 can be provided near the battery 11 to detect the temperature of the battery 11. The temperature of the battery 11 detected by the first temperature sensor 15 is used as the first operating temperature. The first temperature sensor 15 can be, but is not limited to, a thermistor, a thermocouple, a Hall element, etc.

[0060] In one possible embodiment, the battery-powered system also includes a mainboard 16, the power input terminal of the mainboard 16 is coupled to the output terminal of the battery 11, and the power output terminal of the mainboard 16 is used to couple to a second electrical device 17, and the minimum operating voltage of the second electrical device 17 is lower than the minimum operating voltage of the first electrical device 13.

[0061] The battery 11 supplies power to a second electrical device 17 via the motherboard 16. The minimum operating voltage of the second electrical device 17 is lower than that of the first electrical device 13. The second electrical device 17 can be a device with a lower minimum operating voltage requirement, such as a motor, a Wi-Fi 5G FEM, or an NFC. The voltage of the second electrical device 17 can be adjusted based on the actual design. The first electrical device 13 and the second electrical device 17 can constitute all the electrical devices powered by the battery 11.

[0062] The battery 11 supplies power to the second electrical device 17 with a lower minimum operating voltage requirement through the mainboard 16. In a low-temperature environment, the battery 11 supplies power to the first electrical device 13 with a higher minimum operating voltage requirement through the boost circuit 12. Under normal temperature conditions, the battery 11 directly supplies power to the first electrical device 13 with a higher minimum operating voltage requirement, ensuring the normal operation of each electrical device in a low-temperature environment and improving the user experience.

[0063] In a possible implementation, the controller 14 is configured to control the boost circuit 12 to switch from the first mode to the second mode when the first operating temperature is lower than a first preset temperature value and the output voltage of the battery 11 is lower than a preset voltage.

[0064] When the output voltage of the battery 11 is lower than the preset voltage, it can be regarded as insufficient power of the battery 11. In this case, the output voltage of the battery 11 is boosted by the boost circuit 12 and then supplied to the first electrical device 13. When the battery 11 has sufficient power, the output voltage of the battery 11 can directly supply power to the first electrical device 13 without activating the boost circuit 12 for boosting, thereby reducing the power consumption of the boost circuit 12.

[0065] For example, see Figure 10 The battery 11 supplies power to electrical devices such as the OLED screen, audio devices, and RF through the connector and the boost circuit 12. The battery 11 supplies power to electrical devices such as the motor, Wifi 5G FEM, and NFC through the connector and the motherboard 16.

[0066] In one possible implementation, see Figure 11 , the battery-powered system may further include a protection chip 18 , the output end of the battery 11 is connected to the input end of the boost circuit 12 through the protection chip 18 ;

[0067] The protection chip 18 is configured to reduce the over-discharge protection threshold voltage of the protection chip 18 from a first voltage value to a second voltage value when the second operating temperature of the battery-powered system is lower than a second preset temperature value.

[0068] The second operating temperature may be the temperature of the battery 11. The second preset temperature value may be equal to the first preset temperature value.

[0069] At low temperatures, the discharge cut-off voltage of the battery 11 may be lower than that at normal temperature, but the specific second voltage value may be confirmed in combination with testing and verification. The over-discharge protection threshold voltage determines the available capacity of the battery 11. The lower the over-discharge protection threshold voltage, the greater the available capacity of the battery 11.

[0070] It should be understood that when the second operating temperature of the battery-powered system is higher than or equal to the second preset temperature value, the over-discharge protection threshold voltage of the protection chip 18 is increased from the second voltage value to the first voltage value.

[0071] In a possible implementation, the battery-powered system further includes a second temperature sensor 19 for detecting the temperature of the battery 11 , and the protection chip 18 uses the temperature of the battery 11 as the second operating temperature of the battery-powered system.

[0072] Since the protection chip 18 cannot communicate with the outside world, a second temperature sensor 19 is added to detect the temperature of the battery 11 to obtain the second operating temperature.

[0073] The second temperature sensor 19 can be provided near the battery 11 to detect the temperature of the battery 11. The temperature of the battery 11 detected by the second temperature sensor 19 is used as the second operating temperature. The second temperature sensor 19 can be, but is not limited to, a thermistor, a thermocouple, a Hall element, etc.

[0074] For example, see Figure 12 and Figure 13Protection chip 18 includes a first-stage protection IC and a second-stage protection IC. Second temperature sensor 19 includes temperature sensor NTC2 connected to the first-stage protection IC and temperature sensor NTC3 connected to the second-stage protection IC. First temperature sensor 15 includes temperature sensor NTC1 connected to the fuel gauge. The first-stage protection IC adjusts its over-discharge protection threshold voltage based on the battery 11 temperature detected by temperature sensor NTC2. The second-stage protection IC adjusts its over-discharge protection threshold voltage based on the battery 11 temperature detected by temperature sensor NTC3. Controller 14 controls boost circuit 12 to switch between a first mode and a second mode based on the battery 11 temperature detected by temperature sensor NTC1 connected to the fuel gauge.

[0075] By adding a boost circuit, the devices connected to the boost circuit have higher minimum operating voltage requirements, such as OLED screens, audio devices, and RF. The specific devices are adjusted according to the actual design. To reduce the power consumption generated by the boost operation within the normal temperature range (a℃ to b℃), the boost circuit is in bypass mode, acting as a non-operating conductor. When the battery temperature is detected to be below a℃, the boost circuit is turned on. The boost circuit can ensure that the boost output voltage is fixed when the battery voltage Vpack falls below a certain value. For example, when the battery voltage is set to below 3.2V, the boost output is fixed to 3.4V. Otherwise, the boost circuit output voltage is equal to the battery voltage. Therefore, with the boost circuit, even if the battery voltage suddenly drops to a low level in a low-temperature environment, the devices connected to the boost circuit can still obtain a sufficiently high operating voltage.

[0076] By adding a second temperature sensor connected to the protection chip, known as a temperature detection function, the protection chip's over-discharge protection threshold voltage is xV when the battery voltage is detected to be within the normal temperature range (a°C to b°C). When the battery temperature is detected to be below a°C, the protection chip automatically switches the over-discharge protection threshold voltage to yV, where yV must be less than xV. The reasons for adding temperature-based dynamic over-discharge protection to the protection chip are: 1. At low temperatures, the battery's discharge cut-off voltage can be lower than at room temperature, but the specific voltage reduction value requires verification and confirmation through testing. The discharge cut-off voltage determines the battery's available capacity; the lower the cut-off voltage, the greater the available capacity. 2. Due to the presence of a boost circuit, the entire device's shutdown voltage can be lowered. Therefore, under the same operating conditions at low temperatures, the actual instantaneous output voltage of the battery may be lower due to the presence of dynamic loads. If the battery voltage falls below the over-discharge protection threshold voltage, the entire device will suddenly shut down. Therefore, the over-discharge protection threshold voltage needs to be lowered, and the specific reduction value requires verification and confirmation through testing.

[0077] By introducing the above two measures, it is possible to ensure that the entire device operates normally under low voltage and obtain more available battery capacity. In order to prevent the battery discharge voltage from dropping too quickly at low temperatures, resulting in a jump in power level, when the fuel gauge detects that the battery temperature is lower than a°C, it will no longer update the power level and report an available time to the entire device to remind the user to charge within this time or use it in a room temperature environment. This time can be verified based on actual measurements.

[0078] Based on the same inventive concept, the present disclosure also provides a battery power supply method, see Figure 14 , Figure 14 FIG1 is a flow chart showing a battery power supply method according to an exemplary embodiment. The battery power supply method can be applied to the battery power supply system described above, and the battery power supply method can include step S1 and step S2.

[0079] Step S1: Acquire a first operating temperature of a battery-powered system.

[0080] Step S2: controlling the boost circuit to switch between the first mode and the second mode according to the first operating temperature.

[0081] In the first mode, the boost circuit directly applies the output voltage of the battery to the first electrical device. In the second mode, the boost circuit boosts the output voltage of the battery and then applies it to the first electrical device.

[0082] Optionally, controlling the boost circuit to switch between the first mode and the second mode according to the first operating temperature may include: when the first operating temperature is lower than a first preset temperature value and the output voltage of the battery is lower than a preset voltage, controlling the boost circuit to switch from the first mode to the second mode.

[0083] Optionally, the battery power supply system further includes a protection chip, and the output end of the battery is connected to the input end of the boost circuit via the protection chip. The battery power supply method may further include:

[0084] When the second operating temperature of the battery-powered system is lower than a second preset temperature value, the over-discharge protection threshold voltage of the protection chip is reduced from the first voltage value to the second voltage value.

[0085] Regarding the battery-powered method in the above embodiment, the specific manner of performing the operation of each step has been described in detail in the embodiment of the battery-powered system, and will not be elaborated here.

[0086] The present disclosure further provides a computer-readable storage medium having computer program instructions stored thereon, wherein the program instructions are executed by a controller in a battery-powered system as follows:

[0087] obtaining a first operating temperature of the battery-powered system;

[0088] The boost circuit is controlled to switch between a first mode and a second mode according to a first operating temperature.

[0089] In an exemplary embodiment, a non-transitory computer-readable storage medium including instructions, such as a memory including instructions, is also provided. The instructions are executable by a controller to perform the battery power supply method. For example, the non-transitory computer-readable storage medium may be a ROM, a random access memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, or the like.

[0090] In another exemplary embodiment, an electronic device is further provided. The electronic device includes a processor and a memory, wherein the memory is used to store processor-executable instructions, and the processor is configured to implement the above-mentioned battery power supply method when executing the instructions.

[0091] Other embodiments of the present disclosure will readily occur to those skilled in the art after considering the specification and practicing the present disclosure. This disclosure is intended to cover any variations, uses, or adaptations of the present disclosure that follow the general principles of the present disclosure and include common knowledge or customary techniques in the art not disclosed herein. The description and examples are to be considered as exemplary only, with the true scope and spirit of the present disclosure being indicated by the following claims.

[0092] It should be understood that the present disclosure is not limited to the exact structures that have been described above and shown in the drawings, and that various modifications and changes can be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A battery powered system, characterized in that: include: Battery; a boost circuit, wherein an input end of the boost circuit is coupled to an output end of the battery, and an output end of the boost circuit is used to couple to a first electrical device; a controller coupled to a control terminal of the boost circuit; The controller is used to control the boost circuit to switch between a first mode and a second mode according to a first operating temperature of the battery-powered system, wherein in the first mode, the boost circuit directly applies the output voltage of the battery to the first electrical device, and in the second mode, the boost circuit boosts the output voltage of the battery and applies it to the first electrical device.

2. The battery powered system according to claim 1, wherein: The battery-powered system further includes a first temperature sensor for detecting the temperature of the battery. The controller is coupled to the first temperature sensor, and the controller uses the temperature of the battery as the first operating temperature of the battery-powered system.

3. The battery powered system according to claim 1, wherein: The battery-powered system also includes a mainboard, the power input end of the mainboard is coupled to the output end of the battery, and the power output end of the mainboard is used to couple to a second electrical device, and the minimum operating voltage of the second electrical device is lower than the minimum operating voltage of the first electrical device.

4. The battery powered system according to any one of claims 1 to 3, characterized in that: The controller is configured to control the boost circuit to switch from the first mode to the second mode when the first operating temperature is lower than a first preset temperature value and the output voltage of the battery is lower than a preset voltage.

5. The battery powered system according to claim 1, wherein: The battery power supply system further includes a protection chip, and the output end of the battery is connected to the input end of the boost circuit through the protection chip; The protection chip is used to reduce the over-discharge protection threshold voltage of the protection chip from a first voltage value to a second voltage value when the second operating temperature of the battery-powered system is lower than a second preset temperature value.

6. The battery powered system according to claim 5, characterized in that: The battery-powered system further includes a second temperature sensor for detecting the temperature of the battery. The protection chip is coupled to the second temperature controller, and the protection chip uses the temperature of the battery as the second operating temperature of the battery-powered system.

7. A battery power supply method, characterized in that: Applied to the battery powered system according to any one of claims 1 to 6, the method comprising: Acquiring a first operating temperature of the battery-powered system; controlling the boost circuit to switch between a first mode and a second mode according to the first operating temperature; In the first mode, the boost circuit directly applies the output voltage of the battery to the first electrical device. In the second mode, the boost circuit boosts the output voltage of the battery and then applies it to the first electrical device.

8. The battery power supply method according to claim 7, characterized in that: The step of controlling the boost circuit to switch between the first mode and the second mode according to the first operating temperature includes: When the first operating temperature is lower than a first preset temperature value and the output voltage of the battery is lower than a preset voltage, the boost circuit is controlled to switch from the first mode to the second mode.

9. A computer-readable storage medium having computer program instructions stored thereon, characterized in that: The program instructions are used by the controller in claim 1 to execute the following method: Acquiring a first operating temperature of the battery-powered system; The boost circuit is controlled to switch between a first mode and a second mode according to the first operating temperature.

10. An electronic device, characterized in that: include: processor; a memory for storing processor-executable instructions; Wherein, the processor is configured to implement the battery power supply method according to claim 7 or 8 when executing the instructions.

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