Power supply circuit, battery management device, battery, and electronic device

Abstract

The utility model provides a power supply circuit, a battery management device, a battery and electronic equipment. The power supply circuit comprises a first comparator, a second comparator, a first impedance device, a second impedance device and a switching device. The first comparator is provided with a first positive input end and a first negative input end, and is used for comparing the level signals which are received through the first positive input end and represent different processor models with the first reference voltage received by the first negative input end, and controlling the opening or closing state of the switching device according to the comparison result; the second comparator is provided with a second positive input end and a second negative input end, the input signal of the second negative input end is compared with the second reference voltage received by the second positive input end according to the state of the switching device, and the output voltage is adjusted according to the comparison result, so that the voltage requirements of different processor models are met. According to the invention, corresponding voltage output can be provided under different processor models.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a power supply circuit, a battery management device, a battery and an electronic device. Background Art

[0002] There are two problems with traditional laptop battery design: first, the voltage output by the real-time clock is fixed, while the host side requires different voltages to meet its needs, resulting in the need to design voltage step-down modules for different processor system motherboards, reducing the versatility of the design; second, the higher voltage output by the battery in the traditional design needs to be stepped down by the host side, but this process will cause energy loss and increase power consumption, making the fixed voltage output unable to meet the requirements of different processor models and low in efficiency. Therefore, these two problems limit the versatility, energy efficiency and adaptability of traditional laptop battery design. Utility Model Content

[0003] The present application provides a power supply circuit, a battery management device, a battery and an electronic device, aiming to solve the problem of how the power supply circuit can adapt to the voltage requirements of different processor models.

[0004] In a first aspect, the present application provides a power supply circuit, the power supply circuit comprising a first comparator, a second comparator, a first impedance device, a second impedance device and a switch device;

[0005] a first comparator, comprising a first positive input terminal and a first negative input terminal, for comparing a level signal indicating different processor models received through the first positive input terminal with a first reference voltage received through the first negative input terminal, and controlling an open or closed state of the switch device according to a first comparison result;

[0006] A second comparator, comprising a second positive input terminal and a second negative input terminal, for comparing an input signal at the second negative input terminal with a second reference voltage received at the second positive input terminal according to a state of the switch device, and adjusting an output voltage according to a second comparison result to adapt to voltage requirements of different processor models;

[0007] The output voltage is equal to the impedance ratio of the first impedance device to the second impedance device plus one multiplied by the second reference voltage, and the open or closed state of the switch device is used to adjust the impedance ratio of the first impedance device to the second impedance device.

[0008] In one embodiment of the present application, the first positive input terminal of the first comparator is connected to a level signal source representing different processor models; the first negative input terminal of the first comparator is connected to a first reference voltage source to receive the first reference voltage; and the output terminal of the first comparator is connected to the switching device.

[0009] In one embodiment of the present application, one end of the first impedance device and the second impedance device connected in series is grounded, and the other end is connected to the output voltage terminal; the middle node of the first impedance device and the second impedance device connected in series is connected to the second negative input terminal of the second comparator, the second positive input terminal of the second comparator is connected to the second reference voltage source to receive the second reference voltage, and the output terminal of the second comparator is connected to the output voltage terminal.

[0010] In one embodiment of the present application, the power supply circuit also includes a semiconductor field effect transistor, which includes a source, a drain and a gate, the source is connected to the output voltage terminal, the drain is connected to the power supply, and the gate is connected to the output terminal of the second comparator.

[0011] In one embodiment of the present application, the first end of the switching device is connected to the output end of the first comparator, the second end is connected to the output voltage end, and the third end is connected to the second negative input end of the second comparator via the intermediate node of the first impedance device and the second impedance device connected in series.

[0012] In one embodiment of the present application, the impedance of the first impedance device is equal to that of the second impedance device, and the equivalent impedance of the circuit where the switching device is located is less than the impedance of the first impedance device; when the switching device is in a closed state, the first impedance device is connected in parallel with the circuit where the switching device is located, and then connected in series with the second impedance device.

[0013] In a second aspect, the present application also provides a battery management device, which includes a battery monitoring module and a power supply circuit as described in any one of the first aspects, wherein a first end of the battery monitoring module is connected to a host of an electronic device, and a second end of the battery monitoring module is connected to the power supply circuit.

[0014] In one embodiment of the present application, the battery monitoring module is used to obtain the processor model of the electronic device, configure corresponding level signals for different processor models, and output the level signal to the first positive input terminal of the first comparator of the power supply circuit.

[0015] In a third aspect, the present application further provides a battery, comprising a battery management device as described in any one of the second aspects.

[0016] In a fourth aspect, the present application further provides an electronic device, comprising a battery as described in any one of the third aspects.

[0017] In one embodiment of the present application, when the processor model of the electronic device is detected by the battery management device, the battery management device will output a level signal corresponding to the processor model to the battery identification pin of the power supply circuit, and the output voltage end of the power supply circuit will output a voltage suitable for its processor model to the electronic device.

[0018] The present application provides a power supply circuit, a battery management device, a battery and an electronic device. The power supply circuit compares the received level signals of different processor models with the reference voltage of the first negative input terminal through a first comparator, and controls the open or closed state of the switch device according to the first comparison result. And compares the signal of the second negative input terminal with the reference voltage of the second positive input terminal according to the state of the switch device through a second comparator, and automatically adjusts the output voltage according to the second comparison result. In addition, the output voltage range is adjusted by changing the impedance ratio of the first impedance device and the second impedance device by controlling the state of the switch device to meet the voltage requirements of different processor models.

[0019] Therefore, the present application can realize the voltage requirements of different processor models in electronic equipment through the combination of the first comparator, the second comparator, the first impedance device, the second impedance device and the switch device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the present application or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 is a circuit block diagram of the power supply circuit provided by the present application;

[0022] Figure 2 is a circuit diagram of a power supply circuit provided in an embodiment of the present application;

[0023] Figure 3 It is a schematic diagram of the communication between the power supply circuit, the battery management system and the host provided in the embodiment of the present application. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solutions and advantages of this application clearer, the technical solutions in this application will be clearly and completely described below in conjunction with the drawings in this application. Obviously, the described embodiments are part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0025] The terms "first", "second", etc. in the specification and claims of this application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments described herein can be implemented in an order other than that illustrated or described herein.

[0026] The RTC power supply circuit is a power supply circuit specifically used for the Real-Time Clock (RTC) module. The RTC power supply circuit is mainly used to provide a stable power supply to the RTC module to ensure its normal operation and data persistence. The RTC has independent timing, date and alarm functions, and uses an external power supply such as a backup battery or supercapacitor to provide continuous power supply, so that accurate time and date records can be maintained even if the main power is cut off. The main function of the RTC power supply circuit is to provide a stable backup power supply for the RTC module to prevent the RTC system from losing power when the power is cut off, resulting in the loss of time and date information.

[0027] RTC power supply circuits are widely used in various electronic devices, such as computers, smart phones, tablets, cameras, home appliances, etc., to record and maintain accurate time and date information, and synchronize clocks with networks and other devices.

[0028] In order to solve the problem of how the power supply circuit adapts to the voltage requirements of different processor models, the present application provides a power supply circuit, a battery management device, a battery and an electronic device. The power supply circuit compares the received level signal of different processor models with the reference voltage of the first negative input terminal through a first comparator, and controls the open or closed state of the switch device according to the first comparison result. And through a second comparator, according to the state of the switch device, the signal of the second negative input terminal is compared with the reference voltage of the second positive input terminal, and the output voltage is automatically adjusted according to the second comparison result. In addition, the output voltage range is adjusted by changing the impedance ratio of the first impedance device and the second impedance device by controlling the state of the switch device to meet the voltage requirements of different processor models.

[0029] Combine the following Figure 1-Figure 3 A power supply circuit, a battery management device and an electronic device of the present application are described.

[0030] Please refer to Figure 1 , Figure 1 : is a circuit block diagram of the power supply circuit provided by the present application. A power supply circuit, which may be an RTC power supply circuit, comprises a first comparator, a second comparator, a first impedance device, a second impedance device and a switch device.

[0031] Exemplarily, the first comparator includes a first positive input terminal and a first negative input terminal, and is used to compare the level signal representing different processor models received through the first positive input terminal with the first reference voltage received through the first negative input terminal, and control the open or closed state of the switching device according to the first comparison result.

[0032] Exemplarily, the second comparator includes a second positive input terminal and a second negative input terminal, which is used to compare the input signal of the second negative input terminal with the second reference voltage received by the second positive input terminal according to the state of the switching device, and adjust the output voltage according to the second comparison result to adapt to the voltage requirements of different processor models.

[0033] The output voltage is equal to the impedance ratio of the first impedance device to the second impedance device plus one multiplied by the second reference voltage, and the open or closed state of the switch device is used to adjust the impedance ratio of the first impedance device to the second impedance device.

[0034] Specifically, the working principle of the power supply circuit is:

[0035] First, the first comparator compares the received level signal representing different processor models with the first reference voltage, and controls the open or closed state of the switch device according to the comparison result. Then, the second comparator compares the input signal of the second negative input terminal with the second reference voltage received by the second positive input terminal according to the state of the switch device. Finally, according to the second comparison result, the range of the output voltage is adjusted to adapt to the voltage requirements of different processor models. The output voltage can be calculated by adding one to the impedance ratio of the first impedance device to the second impedance device and multiplying it by the second reference voltage.

[0036] Therefore, the present application can realize flexible adjustment and precise control of voltage requirements of different processor models. Through the cooperation of the first comparator and the switch device, the switch device can be controlled according to the level signal representing different processor models and the first reference voltage, thereby adjusting the range of the output voltage. In this way, it can be ensured that the output voltage meets the requirements of different processor models to maintain a precisely controllable and stable voltage range, thereby ensuring the normal operation of the processor and saving power consumption. The present application can automatically adjust the voltage range of the power supply circuit according to the needs of different CPU models to improve system performance and power efficiency.

[0037] The power supply circuit is described in detail below through embodiments.

[0038] Please refer to Figure 2 , Figure 2 is a circuit diagram of a power supply circuit provided in an embodiment of the present application. Exemplarily, the VOUT_SEL pin of the first positive input terminal (+) of the first comparator C1 is connected to a level signal source representing different processor models to receive level signals representing different processor models. The first negative input terminal (-) of the first comparator C1 is connected to a first reference voltage source to receive a first reference voltage VREF1. The output terminal of the first comparator C1 is connected to the switch device K.

[0039] That is to say, the first comparator C1 receives a level signal representing different processor models as its positive input. In this way, according to the signal of different processor models, the first comparator C1 can identify the type of processor. The first comparator C1 compares the first reference voltage VREF1 with the input signal and generates a corresponding output according to the comparison result. The output of the first comparator C1 is used to control the state of the switch device K, which can be an open or closed state. The switch device K is switched according to the output of the first comparator C1.

[0040] Exemplarily, one end of the first impedance device R1 and the second impedance device R2 connected in series is grounded, and the other end is connected to the output voltage terminal VOUT. The switch device K is connected to the middle node A of the first impedance device R1 and the second impedance device R2 connected in series (the specific connection position can be any position of the connection line between the first impedance device R1 and the second impedance device R2), and the middle node A is connected to the second negative input terminal (-) of the second comparator C2, the second positive input terminal (+) of the second comparator C2 is connected to the second reference voltage source to receive the second reference voltage VREF2, and the output terminal of the second comparator C2 is connected to the output voltage terminal VOUT.

[0041] Exemplarily, the first end of the switch device K is connected to the output end of the first comparator C1, the second end of the switch device K is connected to the output voltage end VOUT, and the third end of the switch device K is connected to the second negative input end (-) of the second comparator C2 via the intermediate node A of the first impedance device R1 and the second impedance device R2 connected in series, that is, the first end of the switch device K is a signal control end, for example, a transistor can be used as a switch device, specifically a triode, a MOS tube, etc. The function of the circuit where the switch device K is located is to form a parallel structure with the first impedance device R1, which is equivalent to short-circuiting the first impedance device R1, and the equivalent impedance R of the circuit where the switch device is located is almost negligible, so after the switch device K is closed, the parallel impedance of the first impedance device R1 and the equivalent impedance R is almost equal to zero.

[0042] As one embodiment, the power supply circuit also includes a semiconductor field effect transistor M, which includes a source S, a drain D and a gate G. The source S is connected to the output voltage terminal VOUT, the drain D is connected to the power supply VDD, and the gate G is connected to the output terminal of the second comparator C2.

[0043] That is to say, the semiconductor field effect transistor M is used to adjust the output voltage. By controlling the voltage of the gate G, the on or off state of the field effect transistor M can be changed. In this embodiment, the output signal of the second comparator C2 is transmitted to the gate G of the semiconductor field effect transistor M. When the voltage of the gate G is higher than a certain threshold, the field effect transistor M enters the on state, allowing current to flow from the drain D to the source S, thereby connecting the power supply VDD and the output voltage terminal VOUT. When the voltage of the gate G is lower than the threshold, the field effect transistor M is in the off state, preventing the current from flowing between the drain D and the source S, so that the power supply VDD and the output voltage terminal VOUT are disconnected. Among them, the output voltage VOUT can be calculated by the following formula:

[0044] VOUT = VREF2*(1+R1 / R2).

[0045] According to the above formula, the impedance ratio of the first impedance device R1 and the second impedance device R2 determines the adjustment range of the output voltage. When the impedance ratio of R1 / R2 increases, the output voltage VOUT will also increase accordingly.

[0046] Specifically, when the switch device K is in the open state, the impedance ratio of the first impedance device R1 to the second impedance device R2 is equal to one; that is, the impedance of the first impedance device R1 is equal to the impedance of the second impedance device R2. When the switch device K is in the closed state, the impedance ratio of the first impedance device R1 to the second impedance device R2 approaches zero; that is, the impedance obtained by connecting the first impedance device R1 and the switch device K in parallel is very small and can be ignored, while the impedance of the second impedance device R2 is very large and can be approximately regarded as an open circuit.

[0047] It can be seen that the impedance change of the first impedance device R1 and the second impedance device R2 depends on the switching state of the switch device K. When the switch device K is in the open state, there is no direct circuit connection between the first impedance device R1 and the second impedance device R2 in the circuit. In this case, the impedances of the two impedance devices are equal, that is, they have the same impedance value. When the switch device K is in the closed state, it forms a conductive path in the circuit to connect the two impedance devices. In the closed state, the switch device K will greatly reduce the resistance value of the parallel line, which can be almost ignored, and when the resistance value of the second impedance device R2 is large, it is equivalent to forming an open circuit.

[0048] For example, when the CPU model of the electronic device requires an operating voltage of 3.0V, the high-level signal input through the first positive input terminal (+) of the first comparator C1 controls the switch device K of the power supply circuit to be disconnected. The voltage at the output voltage terminal VOUT is:

[0049] VREF2*(1+R1 / R2)=1.5×(1+1)=3.0V, and the calculated 3.0V voltage is supplied to the host of the electronic device to supply the CPU.

[0050] For example, when the CPU model of the electronic device requires an operating voltage of 1.5V, the low-level signal input through the first positive input terminal (+) of the first comparator C1 controls the switch component K of the power supply circuit to close. The voltage at the output voltage terminal VOUT is:

[0051] VREF2*(1+R1 / R2)=1.5×(1+0)=1.5V, and the calculated 1.5V voltage is supplied to the host of the electronic device to supply the CPU.

[0052] The above two examples demonstrate the control of the switching device through the level signal output by the first comparator to adjust the impedance ratio of the first impedance device R1 and the second impedance device R2, so that the output voltage is calculated and adjusted accordingly according to the above formula to meet the voltage requirements of different CPU models of electronic equipment.

[0053] Please refer to Figure 3 , Figure 3 It is a schematic diagram of the communication between the power supply circuit, the battery management system and the host provided in the embodiment of the present application.

[0054] In some embodiments of the present application, the present application further provides a battery management device, including a battery monitoring module and a power supply circuit as described in the above embodiment. A first end of the battery monitoring module is connected to a host of an electronic device, and a second end of the battery monitoring module is connected to the power supply circuit.

[0055] Exemplarily, the battery monitoring module can use a battery capacity meter chip (Gauge IC), which is an integrated circuit that is connected to the battery and is used to detect and monitor the battery's charge capacity, voltage, temperature and other parameters, and provide accurate battery status information. The Gauge IC is connected to the battery circuit to monitor the battery's operating status in real time and provide information such as power estimation and remaining usage time. The Gauge IC plays an important role in electronic devices because it can provide accurate battery information, help users understand the remaining capacity of the battery, and predict the battery life. Through communication with the Gauge IC, the power supply circuit can make corresponding decisions and adjustments based on the real-time status of the battery, such as adaptively adjusting the power supply voltage of the electronic device to adapt to the voltage requirements of different CPU models.

[0056] Exemplarily, the battery monitoring module is used to obtain the processor model of the electronic device, configure corresponding level signals for different processor models, and send the level signal to the first positive input terminal of the first comparator of the power supply circuit.

[0057] Specifically, the battery monitoring module can obtain the processor model of the electronic device and perform corresponding high and low level configurations according to different processor models. In other words, the battery monitoring module can identify and understand the type of processor used by the connected electronic device. Once the processor model is determined, the battery monitoring module will configure a corresponding level signal for each different processor model. The level signal can be a high level signal or a low level signal, which can be specifically designed according to the actual circuit, and the level signal is sent to the first positive input terminal of the first comparator in the power supply circuit.

[0058] Specifically, by configuring different level signals, the battery monitoring module can transmit different control signals to the first comparator in the power supply circuit. These control signals are used to control the output result of the first comparator in the power supply circuit. In this way, the output voltage of the power supply circuit can be adjusted according to different processor models to meet the requirements of different processors.

[0059] In some embodiments of the present application, the present application also provides a battery, which includes the battery management device described in the above embodiments.

[0060] In some embodiments of the present application, the present application further provides an electronic device, which includes the battery described in the above embodiment.

[0061] Exemplarily, when the processor model of an electronic device is detected by the battery management device 300, the battery management device will output a level signal corresponding to the processor model to the battery identification pin of the power supply circuit, and the output voltage end of the power supply circuit will output a voltage suitable for its processor model to the electronic device.

[0062] Specifically, when the battery management device detects the processor model of the electronic device, the battery management device will output a corresponding level signal according to the processor model. The signal will be sent to the battery identification pin VOUT_SEL (such as the first positive input terminal of the first comparator of the power supply circuit) at the first positive input terminal of the first comparator of the power supply circuit. Figure 2 After receiving the level signal from the battery management device, the power supply circuit will process the level signal, for example, it will adjust the output voltage of the power supply circuit according to different level signals to meet the voltage requirements of different processor models.

[0063] Specifically, the battery monitoring module can use a Gauge IC chip, and when the Gauge IC communicates with the host EC (Embedded Controller) of the electronic device, it obtains relevant information by reading the CPU model. This means that the Gauge IC can obtain information about the specific type of processor installed in the electronic device.

[0064] Once the CPU model is determined, the Gauge IC will configure the corresponding level signals according to the different CPU models, and output these signals to the VOUT_SEL pin of the power supply circuit 100. After receiving the level signals from the Gauge IC, the power supply circuit 100 will make judgments and processes according to these signals. Specifically, the power supply circuit 100 will control its voltage output according to the different level signals.

[0065] In other words, according to the CPU model information provided by the Gauge IC, by setting different level signals, the power supply circuit 100 can adjust its output voltage to adapt to different CPU models. By allowing the power supply circuit 100 to adaptively adjust the power supply voltage according to different CPU models, the requirements of different processors for the power supply voltage can be met.

[0066] Therefore, the Gauge IC reads the CPU model by communicating with the host EC and configures level signals according to different CPU models. These level signals are used to adjust the voltage range of the power supply circuit to ensure that the voltage output by the power supply voltage is adapted to different CPU models.

[0067] In summary, the power supply circuit described in the present application can enable the same battery to be used on electronic devices with different CPU models (for example, the electronic device can be a laptop computer) without requiring a separate voltage reduction process on the host side, thereby improving the versatility of the battery and the host motherboard.

[0068] Generally, different electronic devices may have different requirements for power supply, including input voltage requirements. The traditional approach is to perform voltage reduction processing on the host side alone so that the output voltage of the battery matches the input voltage required by the host side. However, through the power supply circuit described in the present application, it is possible to avoid performing voltage reduction processing on the host side alone. The power supply circuit itself provides an output voltage that meets the requirements of different CPU platforms, so that it can be directly connected to the host motherboard without the need for an additional voltage reduction processing circuit. In this way, the same battery can be applied to multiple different laptop system platforms, improving the versatility of the battery and the host motherboard.

[0069] Furthermore, the power supply circuit described in the present application can simplify the design and manufacturing process of the battery system, reduce costs and workload, and also facilitate end users, allowing them to more flexibly switch and share batteries between electronic devices with different CPU models.

[0070] It should be noted here that the above-mentioned battery management device and electronic device provided in the embodiments of the present application can realize the functions realized by the above-mentioned power supply circuit embodiments and can achieve the same technical effects. The parts and beneficial effects of this embodiment that are the same as those of the power supply circuit embodiment will not be described in detail here.

[0071] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A power supply circuit, characterized in that: The power supply circuit includes a first comparator, a second comparator, a first impedance device, a second impedance device and a switch device; in a first comparator, comprising a first positive input terminal and a first negative input terminal, for comparing a level signal indicating different processor models received through the first positive input terminal with a first reference voltage received through the first negative input terminal, and controlling an open or closed state of the switch device according to a first comparison result; A second comparator, comprising a second positive input terminal and a second negative input terminal, for comparing an input signal at the second negative input terminal with a second reference voltage received at the second positive input terminal according to a state of the switch device, and adjusting an output voltage according to a second comparison result to adapt to voltage requirements of different processor models; The output voltage is equal to the impedance ratio of the first impedance device to the second impedance device plus one multiplied by the second reference voltage, and the open or closed state of the switch device is used to adjust the impedance ratio of the first impedance device to the second impedance device.

2. The power supply circuit according to claim 1, characterized in that: The first positive input terminal of the first comparator is connected to a level signal source indicating different processor models; the first negative input terminal of the first comparator is connected to a first reference voltage source to receive the first reference voltage; An output terminal of the first comparator is connected to the switching device.

3. The power supply circuit according to claim 1, characterized in that: One end of the first impedance device and the second impedance device connected in series is grounded, and the other end is connected to the output voltage terminal; the middle node of the first impedance device and the second impedance device connected in series is connected to the second negative input terminal of the second comparator, the second positive input terminal of the second comparator is connected to the second reference voltage source to receive the second reference voltage, and the output terminal of the second comparator is connected to the output voltage terminal.

4. The power supply circuit according to claim 1, characterized in that: The power supply circuit also includes a semiconductor field effect transistor, which includes a source, a drain and a gate. The source is connected to the output voltage terminal, the drain is connected to the power supply, and the gate is connected to the output terminal of the second comparator.

5. The power supply circuit according to claim 1, characterized in that: The first end of the switch device is connected to the output end of the first comparator, the second end is connected to the output voltage end, and the third end is connected to the second negative input end of the second comparator via an intermediate node in series of the first impedance device and the second impedance device.

6. The power supply circuit according to claim 1, characterized in that: The impedance of the first impedance device is equal to that of the second impedance device, and the equivalent impedance of the circuit where the switch device is located is smaller than the impedance of the first impedance device; when the switch device is in a closed state, the first impedance device is connected in parallel with the circuit where the switch device is located, and then connected in series with the second impedance device.

7. A battery management device, characterized in that: The battery management device comprises a battery monitoring module and a power supply circuit as claimed in any one of claims 1 to 6, wherein a first end of the battery monitoring module is connected to a host of the electronic device, and a second end of the battery monitoring module is connected to the power supply circuit.

8. The battery management device according to claim 7, characterized in that: The battery monitoring module is used to obtain the processor model of the electronic device, configure corresponding level signals for different processor models, and output the level signal to the first positive input terminal of the first comparator of the power supply circuit.

9. A battery, characterized in that: The battery comprises the battery management device as claimed in claim 7 or 8.

10. An electronic device, characterized in that: The electronic device comprises the battery as claimed in claim 9.

11. The electronic device according to claim 10, characterized in that: When the processor model of the electronic device is detected by the battery management device, the battery management device will output a level signal corresponding to the processor model to the battery identification pin of the power supply circuit, and the output voltage end of the power supply circuit will output a voltage suitable for its processor model to the electronic device.

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