Battery management circuit, battery, battery management method and device and electronic equipment

Abstract

The invention relates to a battery management circuit, a battery, a battery management method and device and electronic equipment, and the circuit comprises a charging and discharging loop which comprises a first switch module; the protection module is connected with the charging and discharging loop, and the protection module is provided with a first control end and a second control end; the detection module is connected with the charging and discharging loop, the detection module is provided with a trigger end, the trigger end is connected with a first control end, the detection module receives an electric signal of the charging and discharging loop and outputs a trigger signal to the protection module, the first switch module is provided with a third control end, and the second switch module is provided with a fourth control end. The second control end is connected with the third control end, and the protection module receives the trigger signal and sends a control signal to the first switch module so as to control the on-off of the charging and discharging loop. The charging and discharging loop of the battery can be cut off under the condition that the equipment is shut down, so that the power consumption of the battery is reduced.

Description

Technical Field

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

[0002] As users' demands for device power storage capacity increase, reducing battery standby power consumption becomes increasingly important. In related technologies, some devices use the power management system in the device to cut off the circuit in the device motherboard to reduce part of the standby power consumption, but there is still power consumption in the battery's own circuit. Summary of the invention

[0003] In order to overcome the problems existing in the related art, the present disclosure provides a battery management circuit, a battery, a battery management method, a device and an electronic device.

[0004] According to a first aspect of an embodiment of the present disclosure, a battery management circuit is provided, comprising: a charge and discharge circuit, comprising a first switch module; a protection module, connected to the charge and discharge circuit, the protection module having a first control end and a second control end; and a detection module, connected to the charge and discharge circuit, the detection module having a trigger end, the trigger end being connected to the first control end, the detection module receiving an electrical signal from the charge and discharge circuit and outputting a trigger signal to the protection module, wherein the first switch module has a third control end, the second control end being connected to the third control end, the protection module receiving the trigger signal and sending a control signal to the first switch module to control the on and off of the charge and discharge circuit.

[0005] In some embodiments, the detection module includes: a detection end connected to the charge and discharge circuit, and the detection end is used to detect changes in electrical signals in the charge and discharge circuit.

[0006] In some embodiments, the detection end includes a first detection end and a second detection end; the protection module has a first end and a second end, the first detection end is connected to the first end, and the second detection end is connected to the second end.

[0007] In some embodiments, the protection module has a first mode and a second mode, the control signal includes a first control signal and a second control signal, and the protection module outputs the first control signal after receiving the trigger signal in the first mode and switches to the second mode, or the protection module outputs the second control signal after receiving the trigger signal in the second mode and switches to the first mode.

[0008] In some embodiments, the first switch module is turned on after receiving the first control signal to connect the charge and discharge loop, and the first switch module is turned off after receiving the second control signal to disconnect the charge and discharge loop.

[0009] In some embodiments, the charge and discharge circuit includes a battery cell, the battery cell has a first pole and a second pole, the battery management circuit also includes: a charge and discharge branch, having a first end and a second end, the first end is connected to the first pole, the second end is connected to the second pole, the charge and discharge branch includes a second switch module and a third switch module, the second switch module includes a fourth control end, the second control end is also connected to the fourth control end, the second switch module is turned off after receiving the first control signal, and the second switch module is turned on after receiving the second control signal.

[0010] In some embodiments, the charge and discharge branch further includes an impedance module, and the impedance module is used to increase the impedance in the charge and discharge branch.

[0011] In some embodiments, the second switch module has a first pole and a second pole, and the impedance module includes: a first resistor located between the first pole and the third switch module; and a second resistor located between the second pole and the third switch module.

[0012] In some embodiments, the first switch module is an N-type MOS tube, and the second switch module is a P-type MOS tube; or the first switch module is a P-type MOS tube, and the second switch module is an N-type MOS tube.

[0013] In some embodiments, the first control signal is a high level signal, and the second control signal is a low level signal; or the first control signal is a low level signal, and the second control signal is a high level signal.

[0014] According to a second aspect of the embodiments of the present disclosure, a battery is further provided, comprising: a battery management circuit as described in any one of the above embodiments.

[0015] According to a third aspect of the embodiments of the present disclosure, there is also provided an electronic device, comprising: a battery management circuit as described in any one of the above embodiments, or a battery as described in any one of the above embodiments.

[0016] In some embodiments, the electronic device has a power button, and the power button is the third switch module of the battery management circuit.

[0017] According to a fourth aspect of an embodiment of the present disclosure, a battery management method is also provided, which is applied to the battery management circuit described in any one of the above embodiments, and the method includes: acquiring an electrical signal in the charging and discharging circuit; and outputting a trigger signal according to the electrical signal.

[0018] In some embodiments, outputting a trigger signal according to the electrical signal includes: outputting the trigger signal when the electrical signal is within a first threshold range; and / or outputting the trigger signal when the electrical signal is within a second threshold range.

[0019] In some embodiments, when the electrical signal is acquired within a first threshold range, the trigger signal is output; and / or when the electrical signal is acquired within a second threshold range, the trigger signal is output, including: after the electrical signal within the first threshold range is continuously acquired for a time that satisfies a first preset time length, the trigger signal is output; and / or after the electrical signal within the second threshold range is continuously acquired for a time that satisfies a second preset time length, the trigger signal is output.

[0020] In some embodiments, the first threshold range is zero current, and the second threshold range is non-zero current.

[0021] According to the fifth aspect of the embodiments of the present disclosure, a battery management device is also provided, which is applied to the battery charging and discharging circuit described in any of the above embodiments, and the device includes: an acquisition module for acquiring an electrical signal in the charging and discharging circuit; and an output module for outputting a trigger signal according to the electrical signal.

[0022] According to a sixth aspect of an embodiment of the present disclosure, there is also provided an electronic device, comprising: a processor; and a memory for storing instructions executable by the processor; wherein the processor is configured to: execute the battery management method as described in any of the foregoing embodiments.

[0023] According to the seventh aspect of the embodiments of the present disclosure, a non-temporary computer-readable storage medium is also provided. When the instructions in the storage medium are executed by a processor of an electronic device, the electronic device can execute the battery management method described in any of the aforementioned embodiments.

[0024] The technical solution provided by the embodiments of the present disclosure may have the following beneficial effects:

[0025] When the detection module detects that the electrical signal in the charge and discharge circuit meets the preset conditions, it can output a trigger signal to enable the protection module to output a control signal to the first switch module to shut down the charge and discharge circuit. This can cut off the battery's charge and discharge circuit when the electronic device is turned off, thereby reducing the battery's power consumption.

[0026] 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 present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] 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.

[0028] Figure 1 is a block diagram of a battery management circuit according to an exemplary embodiment.

[0029] Figure 2 is a block diagram of a battery management circuit according to another exemplary embodiment.

[0030] Figure 3 is a circuit diagram of a battery management circuit according to an exemplary embodiment.

[0031] Figure 4 The diagram is a schematic diagram of an electronic device according to an exemplary embodiment.

[0032] Figure 5 The figure is a flow chart of a battery management method according to an exemplary embodiment.

[0033] Figure 6 is a flow chart of a battery management method according to another exemplary embodiment.

[0034] Figure 7 is a flow chart of a battery management method according to yet another exemplary embodiment.

[0035] Figure 8 The invention is a block diagram of a battery management device according to an exemplary embodiment.

[0036] Fig. 9 It is a block diagram of an electronic device according to an exemplary embodiment.

[0037] Fig.10 The invention is a block diagram of a battery management device according to an exemplary embodiment. DETAILED DESCRIPTION

[0038] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. Instead, they are merely examples of devices and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

[0039] As users' demands for device endurance increase, it is very important to reduce the standby power consumption of electronic devices. Higher standby power consumption will consume battery power faster, thus shortening the usage time of the device.

[0040] In the related art, in order to reduce standby power consumption, some devices cut off the connection between the system motherboard and the battery when in standby mode, so that more components stop working to reduce power consumption, but cannot cut off the loop current of the battery itself.

[0041] In order to solve the above technical problem, a battery management circuit 1 is provided according to an embodiment of the present disclosure.

[0042] Figure 1 is a block diagram of a battery management circuit according to an exemplary embodiment.

[0043] In some embodiments, Figure 1 As shown, the battery management circuit 1 mainly includes a charge and discharge circuit 2 , a protection module 3 and a detection module 4 .

[0044] like Figure 1 As shown, the charge and discharge circuit 2 may include a first switch module 5, the protection module 3 may be connected to the charge and discharge circuit 2, and the protection module 3 may have a first control terminal 31 and a second control terminal 32. The detection module 4 may be connected to the charge and discharge circuit 2, the detection module 4 may have a trigger terminal 41, the trigger terminal 41 may be connected to the first control terminal 31, the detection module 4 may receive an electrical signal of the charge and discharge circuit 2 and output a trigger signal to the protection module 3. Among them, the first switch module 5 may have a third control terminal, the second control terminal 32 may be connected to the third control terminal, the protection module 3 may receive the trigger signal and send a control signal to the first switch module 5 to control the on and off of the charge and discharge circuit 2.

[0045] In this embodiment, when the electrical signal in the charge and discharge circuit 2 meets the preset conditions (for example, the current is zero) through the detection module 4, the detection module 4 will trigger the protection module 3 to output a control signal to the first switch module 5 to shut down the charge and discharge circuit 2. In this way, under specific electrical signal conditions, the charge and discharge circuit 2 of the battery 100 itself can be cut off, so that the power consumption in the charge and discharge circuit 2 of the battery 100 is reduced to a lower level.

[0046] Specifically, when the detection module 4 detects that there is no current in the charge and discharge circuit 2, the protection module 3 can send a disconnection control signal to the first switch module 5, thereby cutting off the charge and discharge circuit 2, so that the battery cell 21 in the battery 100 stops supplying power to the mainboard, thereby reducing the power consumption of the battery 100 to a lower level. Compared with the related art, it is difficult to completely cut off the leakage current path on the battery's own mainboard in the related art. The present disclosure can achieve full voltage segment power consumption control of the battery 100 mainboard when the current conditions are met, and reduce the power consumption of the battery 100 mainboard to a lower level, thereby reducing the leakage current and extending the service life of the battery 100.

[0047] It is understandable that the battery management circuit 1 can be set in the main board of the battery 100. For example, when the battery management circuit 1 is set in the main board of the battery 100, the battery management circuit 1 can be a part of the battery management system (BATTERY MANAGEMENT SYSTEM). Those skilled in the art should understand that the main board of the battery 100 can be a protection circuit board integrated in the lithium battery pack (the circuit board can integrate protection IC, MOSFET and other electronic devices), a main controller board of the battery management system (BMS) (the main controller board can integrate MCU, driver chip, detection circuit, etc.), an electronic control board of the battery module (the electronic control board can integrate battery stack control, balancing and other functions), a protection PCB built into the battery module (which can be electrically connected to the battery cell), etc., but the present disclosure does not specifically limit which type of main board the battery management circuit 1 is set on, that is, those skilled in the art can set or adjust according to actual conditions, as long as the battery management circuit 1 is set in the main board of the battery.

[0048] It is understandable that the charge and discharge circuit 2 may include a battery cell 21, such as Figure 1 As shown, the charge-discharge circuit 2 may be a circuit path composed of a battery cell 21 and a wire connecting the positive and negative electrodes of the battery cell 21 and the outside. The charge-discharge circuit 2 in the present disclosure may be provided on the main board of the battery 100, and is used for charging and discharging with the battery 100 from the outside. Controlling the on and off of the charge-discharge circuit 2 may control the energy exchange between the battery cell 21 itself and the electrical components in the main board of the battery 100.

[0049] It is understandable that the protection module 3 can be a module in the battery management circuit 1 for implementing protection control of the charge and discharge circuit 2. For example, the protection module 3 can disconnect the charge and discharge circuit 2 to implement protection control of the battery when the battery is abnormal (for example, overcharge, over discharge, overcurrent and short circuit, etc.) by monitoring parameters such as voltage, current, and temperature. In summary, it should be understood by those skilled in the art that the protection module 3 can be a lithium-ion battery protection board, an integrated protection IC chip (for example, a control logic unit of a protection chip), an independent protection controller, a digital circuit control module (for example, a single-chip microcomputer, CPLD, FPGA, etc.), an MCU or DSP module with protection control logic, etc., but the present disclosure does not specifically limit the type of the protection module 3, that is, those skilled in the art can adjust its type according to actual conditions. As long as the protection module 3 can implement protection control of the charge and discharge circuit 2, it can be used.

[0050] In some embodiments, the protection module 3 may have a first mode and a second mode that can be switched to each other, the control signal may include a first control signal and a second control signal, the protection module 3 may output the first control signal after receiving the trigger signal in the first mode and may switch to the second mode, or the protection module 3 may output the second control signal after receiving the trigger signal in the second mode and may switch to the first mode. The first switch module 5 may be turned on after receiving the first control signal to turn on the charge and discharge circuit 2, and the first switch module 5 may be turned off after receiving the second control signal to turn off the charge and discharge circuit 2. For example, the protection module 3 may be a lithium-ion battery protection board, the first mode may be a protection mode of the lithium-ion battery protection board, in the first mode, the lithium-ion battery protection board may output a first control signal to control the first switch module 5 to allow the battery cell 21 to charge and discharge normally, and switch to the second mode, the second mode may be a non-protection mode of the lithium-ion battery protection board, in the second mode, the lithium-ion battery protection board may output a second control signal to control the first switch module 5 to disconnect the charge and discharge circuit 2 to protect the battery, and may switch back to the first mode to prepare for the next triggering of the first switch module 5. The lithium-ion battery protection board switches between these two modes to control the on / off of the charge and discharge circuit 2, thereby achieving cycle protection control of the battery.

[0051] It should be noted that, in a possible case, the first switch module 5 may be an N-type MOS tube, the first electrode may be the drain electrode of the N-type MOS tube, the second electrode may be the source electrode of the N-type MOS tube, the control electrode may be the gate electrode of the N-type MOS tube, and the protection module 3 may output a first control signal or a second control signal at the second control terminal 32 to control the conduction or cutoff of the N-type MOS tube. In this case, the first control signal may be a high-level signal, and the second control signal may be a low-level signal. When a high-level signal is output, the N-type MOS tube conducts the charge and discharge loop 2, and when a low-level signal is output, the N-type MOS tube cuts off the charge and discharge loop 2. In this way, the protection module 3 can control the conduction and cutoff states of the MOS tube, thereby controlling the on and off of the charge and discharge loop 2, thereby protecting the battery 100.

[0052] Alternatively, in another possible case, the first switch module 5 may also be a P-type MOS tube, the first electrode may be the source electrode of the P-type MOS tube, the second electrode may be the drain electrode of the P-type MOS tube, the control electrode may be the gate electrode of the P-type MOS tube, and the protection module 3 may output a first control signal or a second control signal at the second control terminal 32 to control the conduction or cutoff of the P-type MOS tube. In this case, the first control signal may be a low-level signal, and the second control signal may be a high-level signal. When the low-level signal is output, the P-type MOS tube conducts the charge-discharge loop 2, and when the high-level signal is output, the P-type MOS tube cuts off the charge-discharge loop 2. In this way, the protection module 3 may also control the conduction and cutoff states of the MOS tube, thereby controlling the on-off state of the charge-discharge loop 2, thereby protecting the battery 100.

[0053] Figure 2 is a block diagram of a battery management circuit according to another exemplary embodiment. Figure 3 is a circuit diagram of a battery management circuit according to an exemplary embodiment.

[0054] In some embodiments, Figure 3 As shown, the protection module 3 may include a first sub-protection module and a second sub-protection module. The first sub-protection module may implement basic single-stage protection, and the second sub-protection module may be connected to the rear stage of the first sub-protection module to perform in-depth protection to improve safety. It may also meet the safety requirements of some current electronic devices. However, the present disclosure does not specifically limit how many sub-protection modules there are in the protection module 3, that is, those skilled in the art may set or adjust according to actual conditions.

[0055] In some embodiments, Figure 3As shown, the first control terminal 31 can be a control port (Control, CTL) in the lithium-ion battery protection board, and the control port (Control, CTL) can receive an external signal to control the protection mode of the lithium-ion battery protection board. The second control terminal 32 can be a discharge control port (Discharge Output, DO) in the lithium-ion battery protection board, and the discharge control port (Discharge Output, DO) can output different control signals according to different modes of the protection module 3. For example, in the protection mode of the protection module 3, the discharge control port (Discharge Output, DO) can output a first level signal, and in the non-protection mode of the protection module 3, the discharge control port (Discharge Output, DO) can output a second level signal. It should be noted that the first level signal in this embodiment can be a high level signal, and the second level signal can be a low level signal, or the first level signal can be a low level signal, and the second level signal can be a high level signal.

[0056] It can be understood that the detection module 4 can be a component for detecting electrical signals in the charge and discharge circuit 2. The detection module 4 detects changes in parameters such as voltage and current by being connected to the charge and discharge circuit 2, and can output a trigger signal representing the state of the charge and discharge circuit 2 at its trigger end 41. The trigger signal can be in digital or analog form (for example, the trigger signal is a pulse high-level signal). The trigger signal will be transmitted to the protection module 3, thereby driving the first control end 31 of the protection module 3 to output a control signal and the protection module 3 itself performs mode switching to control the on and off of the charge and discharge circuit 2.

[0057] In some embodiments, the detection module 4 can be a coulomb counter, an integrated detection chip, an independent analog detection circuit, an ADC conversion interface in a microprocessor, etc., but the present disclosure does not specifically limit the type of the detection module 4, that is, those skilled in the art can adjust its type according to actual conditions. As long as the detection module 4 can detect changes in parameters such as voltage and current by connecting to the charge and discharge circuit 2, and can output a trigger signal representing the state of the charge and discharge circuit 2 at its trigger terminal 41, it can be used.

[0058] In some embodiments, Figure 3As shown, the detection module 4 can be a fuel gauge. The trigger terminal 41 can be an interrupt port (Interrupt, INT) in the fuel gauge. When the fuel gauge detects a preset trigger condition, an interrupt pulse signal is output at the interrupt port (Interrupt, INT), and the interrupt pulse signal can trigger the external circuit to perform corresponding protection or control. In the present disclosure, the interrupt port (Interrupt, INT) can be connected to the CTL port of the protection module 3. When an interrupt pulse is generated, the protection module 3 can be triggered to switch the mode to control the on and off of the charge and discharge circuit 2, thereby protecting the charge and discharge circuit 2.

[0059] It is understandable that the first switch module 5 can be a component that controls the on / off of the charge and discharge circuit 2 to cut off or restore the charge and discharge circuit 2, thereby realizing the protection of the battery cell 21 or the control of normal charge and discharge. For example, the first switch module 5 can be a MOS tube, a relay, a thyristor, a CMOS switch or other device, and the on / off characteristics of the above-mentioned devices can be used to realize the on / off of the charge and discharge circuit 2. It should be noted that the present disclosure does not specifically limit the type of the first switch module 5, that is, those skilled in the art can adjust its type according to actual conditions, as long as the first switch module 5 can control the on / off of the charge and discharge circuit 2 to cut off or restore the charge and discharge circuit 2.

[0060] In some embodiments, Figure 3 As shown, the first switch module 5 can be a MOS tube, and the MOS tube can have a first electrode, a second electrode and a control electrode, and the third control end can be the control electrode of the MOS tube. The first electrode of the MOS tube can be connected to the positive electrode path of the charge and discharge loop 2, and the second electrode can be connected to the negative electrode path. When the MOS tube is turned on, the first electrode to the second electrode is turned on, the positive and negative electrode paths are connected, and the charge and discharge loop 2 is turned on. When the MOS tube is turned off, the first electrode to the second electrode is not turned on, the positive and negative electrode paths are disconnected, and the charge and discharge loop 2 is disconnected. By controlling the conduction state of the first electrode and the second electrode of the MOS tube, the on and off of the entire charge and discharge loop 2 can be controlled to achieve protection control of the charge and discharge loop 2.

[0061] It is understandable that the present disclosure does not specifically limit the specific form of the first switch module 5. The above situation is only an exemplary description of the forms in which the first switch module 5 can exist, but is not limited to the situations described in the above embodiments. As long as the first switch module 5 can control the on and off of the charge and discharge circuit 2 to cut off or restore the charge and discharge circuit 2, it can be used. In other words, as long as it is under this condition, those skilled in the art can adjust the specific form of the first switch module 5 according to actual conditions.

[0062] In some embodiments, Figure 3As shown, the detection module 4 may include a detection terminal 42 , which may be connected to the charge-discharge loop 2 , and the detection terminal 42 may be used to detect changes in electrical signals in the charge-discharge loop 2 .

[0063] In this embodiment, by setting the detection end 42 of the detection module 4 to be directly connected to the charge and discharge circuit 2, the parameter changes of the electrical signals such as voltage and current in the charge and discharge circuit 2 can be detected and obtained in real time, so that the working state changes of the charge and discharge circuit 2 can be quickly captured and fed back to the protection module 3 in time to trigger the protection module 3 to output a control signal and switch the mode.

[0064] In some embodiments, Figure 3 As shown, the detection end 42 may include a first detection end 43 and a second detection end 44 , and the protection module 3 may have a first end 33 and a second end 34 , wherein the first detection end 43 may be connected to the first end 33 , and the second detection end 44 may be connected to the second end 34 .

[0065] In this embodiment, by setting a first detection terminal 43 and a second detection terminal 44 respectively connected to the two ends of the protection module 3, the voltage difference between the two ends of the protection module 3 can be detected or a detection current loop can be formed to detect whether there is an electrical signal change between the ports of the protection module 3.

[0066] In one possible case, when the first detection terminal 43 and the second detection terminal 44 detect that there is no change in the electrical signal between the protection module 3, a trigger signal can be output to the protection module 3 through the trigger terminal 41 of the detection module 4. After the second control terminal 32 of the protection module 3 receives the trigger signal, the protection module 3 can switch the mode. After the protection module 3 switches the mode, a control signal can be sent to the third control terminal through the second control terminal 32 to cut off the charge and discharge circuit 2.

[0067] In another possible case, when the first detection terminal 43 and the second detection terminal 44 detect a change in the electrical signal between the protection module 3, a trigger signal can be output to the protection module 3 through the trigger terminal 41 of the detection module 4. After the second control terminal 32 of the protection module 3 receives the trigger signal, the protection module 3 can switch the mode. After the protection module 3 switches the mode, a control signal can be sent to the third control terminal through the second control terminal 32 to turn on the charge and discharge circuit 2.

[0068] In some embodiments, the detection module 4 is an example of a power meter. Figure 3As shown, the first detection terminal 43 can be a positive sampling port (Sense Positive Port, SRP), which can be connected to the positive electrode of the battery cell 21 in the charge and discharge circuit 2, and is used to sample and detect the voltage, current and other parameters of the positive electrode. The second detection terminal 44 can be a negative sampling port (Sense Negative Port, SRN), which can be connected to the negative electrode of the battery 100, and is used to sample and detect the voltage, current and other parameters of the negative electrode. Using the SRP port as the first detection terminal 43 and the SRN as the second detection terminal 44, the voltage difference and current change between the two poles of the battery cell 21 can be detected, so that the charge and discharge conditions of the battery cell 21 can be monitored.

[0069] In some embodiments, the protection module 3 is a lithium-ion battery protection board as an example. Figure 3 As shown, the first end 33 can be the VSS port of the lithium-ion battery protection board, the second end 34 can be the VINI port of the lithium-ion battery protection board, the first detection end 43 is connected to the first end 33, and the second detection end 44 is connected to the second end 34. The state of the protection board can be determined by detecting the voltage difference between the first end 33 and the second end 34.

[0070] In some embodiments, Figure 2 As shown, the charge and discharge circuit 2 may include a battery cell 21, and the battery cell 21 may have a first pole and a second pole. The battery management circuit 1 may also include a charge and discharge branch 6, and the charge and discharge branch 6 may have a first end 33 and a second end 34. The first end 33 may be connected to the first pole, and the second end 34 may be connected to the second pole. The charge and discharge branch 6 may include a second switch module 61 and a third switch module 62. The second switch module 61 may include a fourth control terminal 611, and the second control terminal 32 may also be connected to the fourth control terminal 611, wherein the second switch module 61 may be turned off after receiving the first control signal, and the second switch module 61 may be turned on after receiving the second control signal.

[0071] In this embodiment, by setting the charge-discharge branch 6, the second switch module 61 and the third switch module 62, the fourth control terminal 611 of the second switch module 61 is also connected to the second control terminal 32. When the second output terminal outputs the second control signal, the charge-discharge loop 2 is disconnected and the second switch module 61 is turned on. At this time, the activation of the charge-discharge loop 2 can be achieved by the third switch module 62.

[0072] It is understandable that the third switch module 62 can be implemented by mechanical switches, field effect transistors, thyristors, relays, CMOS switches, digital switch chips, microcontroller GPIOs, and analog or combinational logic switch circuits, etc. The main principle is to use the conduction and cutoff characteristics of these devices or chips themselves to accurately control the on and off of the charge and discharge branch 6, thereby achieving the effect of protecting and managing the battery management circuit 1. However, the present disclosure does not specifically limit the type of the third switch module 62, that is, those skilled in the art can adjust its type according to actual conditions. For example, taking the third switch module 62 as a mechanical switch, for example, the third switch module 62 can be a power mechanical switch (also called a lock screen key) in an electronic device.

[0073] In some embodiments, when the detection module 4 detects that the electrical signal in the charge and discharge circuit 2 meets the preset condition, the detection module 4 can output a trigger signal to the protection module 3. The preset condition can be that the current is zero and the current is not zero. In some embodiments, the working principle of the battery management circuit 1 is as follows:

[0074] When the protection module 3 is in the second mode, and the detection module 4 detects that the current of the charge-discharge circuit 2 changes from non-zero to zero, the detection module 4 can output a trigger signal to the protection module 3. After receiving the trigger signal, the protection module 3 can output a second control signal to the first switch module 5 and the second switch module 61, and the protection module 3 itself switches to the first mode. The first switch module 5 can disconnect the charge-discharge circuit 2 after receiving the second control signal, and the second switch module 61 can be opened after receiving the second control signal. When the second switch module 61 is opened, if the activation of the charge-discharge branch 6 is to be realized, the third switch module 62 is required to control it. The working principle of the third switch module 62 is as follows:

[0075] When the third switch module 62 is turned off, the charge and discharge circuit 2 is completely disconnected, and the battery 100 stops supplying power to the mainboard, thereby realizing low power consumption protection. When the third switch module 62 is turned on, the charge and discharge branch 6 will form a loop, and the current in the charge and discharge branch 6 loop will flow through the charge and discharge circuit 2. At this time, the protection module 3 is in the first mode, and the detection module 4 will detect that the current changes from zero to non-zero, so that the detection module 4 can output a trigger signal to the protection module 3. After receiving the trigger signal, the protection module 3 can output a first control signal to the first switch module 5 and the second switch module 61, and the protection module 3 itself switches to the second mode. After receiving the first control signal, the first switch module 5 can turn on the charge and discharge circuit 2, and the second switch module 61 can be disconnected after receiving the second control signal. When the first switch module 5 is turned on, the battery management circuit 1 can resume normal power supply. Through the coordinated control of the second switch module 61 and the third switch module 62, accurate management of the battery circuit can be achieved while protecting, thereby improving the safety of the battery 100.

[0076] It can be further understood that when the current in the charge and discharge circuit 2 is converted from "non-zero" to "zero" (in other words, from current to no current) in the second mode of the protection module 3, the detection module 4 can output a trigger signal to the protection module 3. After receiving the trigger signal in the second mode, the protection module 3 can output a second control signal to the first switch module 5 and the second switch module 61. While outputting the second control signal, the protection module 3 can switch to the first mode. The first switch module 5 disconnects the charge and discharge circuit 2 after receiving the second control signal, and the second switch module 61 opens after receiving the second control signal. At this time, the charge and discharge circuit 2 is in a disconnected state and cannot supply power to the outside. In the above state, since the charge and discharge circuit 2 and the charge and discharge branch 6 are both connected to the positive and negative poles of the battery cell 21, the on and off of the entire charge and discharge circuit 2 is controlled by the third switch module 62.

[0077] It can be further understood that when the third switch module 62 is turned off, the entire charge and discharge circuit 2 is in a disconnected state, and the battery cell 21 in the battery 100 stops supplying power to the mainboard, thereby reducing the power consumption of the battery 100 to a lower level. When the third switch module 62 is turned on, the electrical signal of the battery cell 21 can form a loop through the charge and discharge branch 6. After the loop is formed through the charge and discharge branch 6, there will also be current in the charge and discharge circuit 2. At this time, the current in the charge and discharge circuit 2 is converted from "zero" to "non-zero" (in other words, from no current to current), and the detection module 4 outputs a trigger signal to the protection module 3 again. After receiving the trigger signal in the first mode, the protection module 3 can output a first control signal to the first switch module 5 and the second switch module 61. While outputting the first control signal, the protection module 3 can switch to the second mode. After receiving the first control signal, the first switch module 5 turns on the charge and discharge circuit 2, and the second switch module 61 is disconnected after receiving the second control signal. At this time, the charge and discharge circuit 2 can supply power to the outside.

[0078] In some embodiments, the first switch module 5 may be an N-type MOS tube, and the second switch module 61 may be a P-type MOS tube; or the first switch module 5 may be a P-type MOS tube, and the second switch module 61 may be an N-type MOS tube. By using different types of MOS tubes to implement the first switch module 5 and the second switch module 61, the first switch module 5 and the second switch module 61 may have opposite characteristics when turned on and off. For example, when the first switch module 5 is turned on, the second switch module 61 is turned off, and when the first switch module 5 is turned off, the second switch module 61 is turned on. Thus, the activation of the charge and discharge circuit 2 can be controlled by the third switch module 62.

[0079] In some embodiments, Figure 2As shown, the charge and discharge branch 6 may further include an impedance module 63 , and the impedance module 63 may be used to increase the impedance in the charge and discharge branch 6 .

[0080] In this embodiment, by adding an impedance module 63 to the charge and discharge branch 6, the current in the charge and discharge branch 6 can be effectively limited and regulated, and increasing the impedance of the charge and discharge branch 6 can avoid large currents from damaging the battery cell 21 or the protection module 3 or the detection module 4. Compared with no impedance module 63, the provision of the impedance module 63 can improve the stability and safety of the charge and discharge branch 6 and the charge and discharge loop 2.

[0081] In some embodiments, Figure 3 As shown, the second switch module 61 may have a first pole and a second pole, the impedance module 63 may include a first resistor 631 and a second resistor 632 , the first resistor 631 may be located between the first pole and the third switch module 62 , and the second resistor 632 may be located between the second pole and the third switch module 62 .

[0082] In this embodiment, by respectively arranging the first resistor 631 and the second resistor 632 between the two poles of the second switch module 61 and the third switch module 62, precise current control of the two parallel branches in the charge and discharge branch 6 is achieved. The first resistor 631 and the second resistor 632 can use different resistance values ​​to achieve balanced limitation of the currents in the two branches. When a large current occurs, the two currents can be limited at the same time to avoid circuit damage, thereby improving the safety and stability of the battery management circuit 1.

[0083] In the related art, if the current signal in the current loop is small, the positive sampling port (Sense Positive Port, SRP) and the negative sampling port (Sense Negative Port, SRN) in the fuel meter may not be detected. The undetectable current signal can be called the current blind spot of the fuel meter configuration.

[0084] In some embodiments, in order to control the current of the charge and discharge branch 6 when the protection is activated, the resistance of the first resistor 631 and the second resistor 632 can be adjusted during device selection. For example, the impedance on the charge and discharge branch 6 can satisfy the current blind area of ​​the battery cell 21 / (the impedance of the first resistor 631+the impedance of the second resistor 632)>the current blind area configured by the fuel gauge. This can avoid the situation where the fuel gauge cannot detect a small current signal in the current loop.

[0085] Figure 4 The diagram is a schematic diagram of an electronic device according to an exemplary embodiment.

[0086] Based on the same concept, the embodiment of the present disclosure can also provide a battery 100. Figure 4As shown, the battery 100 may include the battery management circuit 1 in any one of the above embodiments.

[0087] It is understandable that if Figure 4 As shown, the battery 100 involved in the present disclosure can be built-in with the above-mentioned battery management circuit 1. For example, the battery 100 can be a lithium-ion battery, a lithium polymer battery, a lead-acid battery, a nickel-metal hydride battery, etc., but the present disclosure does not specifically limit the type of the battery 100, that is, those skilled in the art can adjust its type according to actual conditions, as long as the battery 100 can be built-in with the battery management circuit 1.

[0088] It can be understood that the battery 100 provided in this embodiment can have all the beneficial effects of the above-mentioned battery management circuit 1, and the present disclosure will not elaborate on them here.

[0089] Based on the same concept, the embodiment of the present disclosure can also provide an electronic device 800. Figure 4 As shown, the electronic device 800 may include the battery management circuit 1 in any one of the above embodiments, or the electronic device 800 may include the battery 100 in any one of the above embodiments.

[0090] It can be understood that the battery management circuit 1 involved in the present disclosure can be applicable to any electronic device 800 listed below.

[0091] It is understood that the electronic device 800 involved in the present disclosure may also be referred to as a terminal device, a terminal, a user equipment (UE), a mobile station (MS), an electronic device (MT), etc., and is a device that provides voice and / or data connectivity to a user. For example, the electronic device 800 may be a handheld device, a vehicle-mounted device, etc. with a wireless connection function. At present, examples of the electronic device 800 may include: a smart phone (MobilePhone), a pocket computer (Pocket Personal Computer, PPC), a handheld computer, a personal digital assistant (Personal Digital Assistant, PDA), a laptop computer, a tablet computer, a wearable device, or a vehicle-mounted device, etc. In addition, when it is a vehicle-to-everything (V2X) communication system, the electronic device 800 may also be a vehicle-mounted device. It should be understood that the embodiments of the present disclosure do not limit the specific technology and specific device form adopted by the electronic device 800. In the following description, a mobile phone is taken as an example for description, but the present disclosure is not limited to this.

[0092] It can be understood that the electronic device 800 provided in this embodiment can have all the beneficial effects of the above-mentioned battery management circuit 1, and the present disclosure will not elaborate on them here.

[0093] In some embodiments, the electronic device 800 may have a power button, which may be the third switch module 62 of the battery management circuit 1. The third switch module 62 of the battery management circuit 1 is implemented by the power button of the electronic device 800, so that when the electronic device 800 is turned off, the detection module 4 in the battery management circuit 1 detects that the current in the charge and discharge circuit 2 is zero, and outputs a trigger signal to the protection module 3. The protection module 3 controls the first switch module 5 to completely disconnect the circuit on the main board inside the battery 100, so that the power consumption of the battery 100 of the electronic device 800 is reduced. When the electronic device 800 is turned on, the battery management circuit 1 can be activated again by the power button, thereby activating the battery 100 to power the electronic device 800.

[0094] In some embodiments, when the electronic device 800 is turned on from the shutdown state, the working principle of the battery management circuit 1 is as follows.

[0095] The electronic device 800 is turned on when the power is high. At this time, the user presses the power button to turn on the device. After the power button is pressed, since the second switch module 61 is a P-MOS, the second switch module 61 is in the on state after the second control terminal 32 (DO) is pulled low (Q3 is in the off state when the second control terminal 32 (DO) is pulled high), and current will pass through the charge and discharge branch 6. At this time, the detection module 4 will detect the discharge current. As described above, in this state, the detection module 4 will resend a trigger signal (pulse high level) to the first control terminal 31. After the protection module 3 receives the trigger signal (pulse high level) again, it will pull the second control terminal 32 (DO) pin high to turn on the first switch module 5 (N-MOS). Since the second control terminal 32 (DO) is pulled high, the second switch module 61 (P-MOS) is no longer turned on.

[0096] When the electronic device 800 is low in power (i.e., the power-on condition is not met), it is turned on. In this case, if the user plugs in a charger to charge the mobile phone, the release function of the protection module 3 will be directly triggered. If the user does not plug in a charger, the protection release will be triggered according to the logic of high power. However, since the voltage is relatively low at this time, the charger needs to be plugged in again to start normally.

[0097] Figure 5 The figure is a flow chart of a battery management method according to an exemplary embodiment.

[0098] Based on the same concept, Figure 5As shown, the embodiment of the present disclosure may also provide a method for protecting a battery 100. The method may be applied to the battery management circuit 1 in any of the above embodiments, and the method for protecting the battery 100 may include the following steps S1 to S2.

[0099] In step S1 , an electrical signal in the charge-discharge circuit 2 is acquired.

[0100] It is understandable that the electrical signal in the charge and discharge loop 2 can be obtained by the detection module 4 in the battery management circuit 1. The acquired electrical signal can be a current signal, a voltage signal, etc. in the charge and discharge loop 2. However, the present disclosure does not specifically limit the type of electrical signal, that is, those skilled in the art can adjust its type according to actual conditions. For example, taking the current signal as an example, the acquired electrical signal can be the size of the acquired current signal.

[0101] In step S2, a trigger signal is output according to the electrical signal.

[0102] It is understandable that outputting a trigger signal according to an electrical signal may be outputting a trigger signal according to the magnitude of a current signal, or may be outputting a trigger signal according to the magnitude of a voltage signal, but the present disclosure does not specifically limit the type of electrical signal, that is, those skilled in the art may adjust the type according to actual conditions. For example, taking a current signal as an example, a trigger signal may be output according to the magnitude of the current signal.

[0103] This embodiment monitors the electrical signal in the charge and discharge circuit 2 in real time to determine whether it meets the preset protection conditions. If so, a trigger signal is output to the protection module 3 to control the first switch module 5 to be turned on or off, thereby cutting off or allowing the flow of electrical signals from the mainboard of the battery 100 itself according to the current conditions in the charge and discharge circuit 2.

[0104] Figure 6 is a flow chart of a battery management method according to another exemplary embodiment.

[0105] In some embodiments, Figure 6 As shown, the above step S2 of outputting a trigger signal according to the electrical signal may include the following step S21.

[0106] In step S21, when the acquired electrical signal is within a first threshold range, a trigger signal is output, and / or when the acquired electrical signal is within a second threshold range, a trigger signal is output.

[0107] In this embodiment, a first threshold range and / or a second threshold range of the electrical signal can be preset, and when the size of the acquired electrical signal is within the first threshold range, a trigger signal can be output, and / or when the size of the acquired electrical signal is within the second threshold range, a trigger signal can be output.

[0108] It can be understood that by detecting whether the electrical signal belongs to a preset first threshold range or a second threshold range, a trigger signal is output if the electrical signal belongs to the first threshold range, and a trigger signal is also output if the electrical signal belongs to the second threshold range. In this way, a trigger signal can be output when the electrical signal meets one of the preset threshold range conditions, wherein the first threshold range and the second threshold range can be set according to different protection requirements to achieve control of different states of the charge and discharge circuit 2.

[0109] The first threshold range may be a current value or a voltage value, and may be some preset intervals or some preset values ​​in the current value or the voltage value. The second threshold range may also be a current value or a voltage value, and may also be other preset intervals or other preset values ​​in the current value or the voltage value. It is understandable that some preset intervals and other preset intervals are two different preset intervals, and some preset values ​​and other preset values ​​are also two different preset values.

[0110] It should be noted that the present disclosure does not specifically limit the specific parameters of the first threshold range and the second threshold range, that is, those skilled in the art may set or adjust them according to actual conditions.

[0111] It should be noted that the term "and / or" means that there are three situations. In the first situation, when the acquired electrical signal is within the first threshold range, a trigger signal is output; in the second situation, when the acquired electrical signal is within the second threshold range, a trigger signal is output; in the third situation, when the acquired electrical signal is within the first threshold range, a trigger signal is output, and, when the acquired electrical signal is within the second threshold range, a trigger signal is output.

[0112] In some embodiments, the first threshold range may be zero current and the second threshold range may be non-zero current.

[0113] In the first possible case of the present embodiment, the acquired electrical signal may be a current signal, and the first threshold range may be zero. In this case, when the current signal acquired in the charge and discharge circuit 2 is zero, the battery cell 21 no longer supplies power to the components in the electronic device 800, or in other words, the components of the electronic device 800 no longer require power. At this time, a trigger signal is output to trigger the protection module 3 to output a control signal to the first switch module 5, so as to control the first switch module 5 to cut off the power supply of the charge and discharge circuit 2 to the functional modules in the main board of the battery 100, thereby reducing the power consumption of the battery 100.

[0114] In the second possible situation of this embodiment, the acquired electrical signal may also be a current signal, and the second threshold range may be any non-zero value. In this case, when the acquired charging and discharging current signal is non-zero, the battery cell 21 starts to supply power to the components in the electronic device 800, or in other words, the components of the electronic device 800 begin to have a power supply demand. At this time, a trigger signal is output to trigger the protection module 3 to output a control signal to the first switch module 5, and the control signal is used to control the first switch module 5 to turn on the charging and discharging circuit 2 to supply power to the functional modules in the battery 100 mainboard, so as to realize normal power supply of the battery 100 to the mainboard.

[0115] In the present disclosure, the present invention can realize cyclic detection of current signals and switch control between a first threshold range and a second threshold range, and can repeatedly realize switching control between protecting the battery 100 and supplying power normally, thereby achieving the effect of controllable cycle reduction of the power consumption of the battery 100.

[0116] Figure 7 is a flow chart of a battery management method according to yet another exemplary embodiment.

[0117] In some embodiments, Figure 7 As shown, in the above step S21, when the electrical signal is within the first threshold range, a trigger signal is output, or when the electrical signal is within the second threshold range, a trigger signal is output, which may include the following step S211.

[0118] In step S211, a trigger signal is output after the continuous acquisition time of the electrical signal within the first threshold range meets the first preset time length, and / or a trigger signal is output after the continuous acquisition time of the electrical signal within the second threshold range meets the second preset time length.

[0119] In this embodiment, by judging whether the duration of the electrical signal satisfying the first threshold range or the second threshold range reaches the first preset time length and the second preset time length respectively before outputting the trigger signal, the trigger signal can be output only after the electrical signal stably and continuously satisfies the corresponding threshold range conditions and reaches the preset time length, thereby filtering the instantaneous changes of the electrical signal, avoiding false triggering of protection actions, and improving the accuracy and reliability of protection triggering.

[0120] For example, the first preset time length and the second preset time length can be set in the range of milliseconds to seconds according to actual protection requirements. The first preset time length and the second preset time length can be set to be the same or different. The same preset time length means that the protection response time for the two threshold range conditions is the same, and setting different preset time lengths can achieve hierarchical protection and thus distinguish the priorities of different protection conditions. Appropriate setting of the preset time length can both filter out signal interference and accurately control the protection action.

[0121] It should be noted that the present disclosure does not specifically limit the specific values ​​of the first preset duration and the second preset duration, that is, those skilled in the art can set and adjust their types according to actual conditions. The above situation is only an exemplary explanation of which values ​​the first preset duration and the second preset duration can exist, but is not limited to the situations described in the above embodiments. As long as it is a time unit. In other words, as long as it is under this condition, those skilled in the art can set and adjust the specific values ​​of the first preset duration and the second preset duration according to actual conditions.

[0122] The battery management method provided by the embodiment of the present disclosure is different from the related art that reduces the standby power consumption by cutting off the connection between the system motherboard and the battery. The battery management method provided in this case is to monitor the current signal in the battery 100's own charge and discharge circuit 2 in real time, and actively output a trigger signal when the current signal meets the preset threshold range conditions to control the internal switch module to disconnect or conduct the battery 100's charge and discharge circuit 2. In this way, it can not only cut off the power supply of the battery 100 to the internal system when the disconnection condition is met to achieve low power consumption, but also re-supply the power when the conduction condition is met, and avoid misoperation by setting a certain judgment time. The whole process realizes closed-loop control of the battery 100's own power consumption. Compared with the related art that is difficult to completely cut off the leakage current inside the battery, this method can more accurately control the power consumption of the battery 100 itself, and has the beneficial effects of reducing leakage current and extending the life of the battery 100.

[0123] Based on the same concept, the embodiment of the present disclosure may also provide a battery management device 200 .

[0124] It is understandable that the battery management device 200 provided in the embodiment of the present disclosure includes hardware structures and / or software modules corresponding to the execution of each function in order to realize the above functions. In combination with the units and algorithm steps of each example disclosed in the embodiment of the present disclosure, the embodiment of the present disclosure can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is executed in the form of hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Those skilled in the art may use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of the technical solution of the embodiment of the present disclosure.

[0125] Figure 8 is a block diagram of a battery management device according to an exemplary embodiment. Figure 8 The battery management device 200 includes an acquisition module 210 and an output module 220 .

[0126] The acquisition module 210 is configured to acquire an electrical signal in the charge-discharge loop 2. The output module 220 is configured to output a trigger signal according to the electrical signal.

[0127] Regarding the device in the above embodiment, the specific manner in which each module performs operations has been described in detail in the embodiment of the method, and will not be elaborated here.

[0128] Based on the same concept, the embodiment of the present disclosure may also provide an electronic device 800 .

[0129] Fig. 9 It is a block diagram of an electronic device according to an exemplary embodiment.

[0130] Fig. 9 800 is a schematic block diagram of an electronic device 800 according to any of the above embodiments, shown in accordance with an exemplary embodiment. For example, the electronic device 800 may be a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, etc.

[0131] Reference Fig. 9 , the electronic device 800 may include one or more of the following components: a processing component 802 , a memory 804 , a power component 806 , a multimedia component 808 , an audio component 810 , an input / output (I / O) interface 812 , a sensor component 814 , and a communication component 816 .

[0132] The processing component 802 generally controls the overall operation of the electronic device 800, such as operations associated with display, phone calls, data communications, camera operations, and recording operations. The processing component 802 may include one or more processors 820 to execute instructions to complete all or part of the steps of the above-mentioned method. In addition, the processing component 802 may include one or more modules to facilitate the interaction between the processing component 802 and other components. For example, the processing component 802 may include a multimedia module to facilitate the interaction between the multimedia component 808 and the processing component 802.

[0133] The memory 804 is configured to store various types of data to support operations on the electronic device 800. Examples of such data include instructions for any application or method operating on the electronic device 800, contact data, phone book data, messages, pictures, videos, etc. The memory 804 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic disk or optical disk.

[0134] The power component 806 provides power to the various components of the electronic device 800. The power component 806 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power for the electronic device 800.

[0135] The multimedia component 808 includes a screen that provides an output interface between the electronic device 800 and the user. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive input signals from the user. The touch panel includes one or more touch sensors to sense touch, slide, and gestures on the touch panel. The touch sensor may not only sense the boundaries of the touch or slide action, but also detect the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 808 includes a front camera and / or a rear camera. When the electronic device 800 is in an operating mode, such as a shooting mode or a video mode, the front camera and / or the rear camera may receive external multimedia data. Each front camera and rear camera may be a fixed optical lens system or have a focal length and optical zoom capability.

[0136] The audio component 810 is configured to output and / or input audio signals. For example, the audio component 810 includes a microphone (MIC), and when the electronic device 800 is in an operating mode, such as a call mode, a recording mode, and a voice recognition mode, the microphone is configured to receive an external audio signal. The received audio signal can be further stored in the memory 804 or sent via the communication component 816. In some embodiments, the audio component 810 also includes a speaker for outputting audio signals.

[0137] I / O interface 812 provides an interface between processing component 802 and peripheral interface modules, such as keyboards, click wheels, buttons, etc. These buttons may include but are not limited to: a home button, a volume button, a start button, and a lock button.

[0138] The sensor assembly 814 includes one or more sensors for providing various aspects of status assessment for the electronic device 800. For example, the sensor assembly 814 can detect the open / closed state of the electronic device 800, the relative positioning of the components, such as the display and keypad of the electronic device 800, and the sensor assembly 814 can also detect the position change of the electronic device 800 or a component of the electronic device 800, the presence or absence of contact between the user and the electronic device 800, the orientation or acceleration / deceleration of the electronic device 800, and the temperature change of the electronic device 800. The sensor assembly 814 may include a proximity sensor configured to detect the presence of a nearby object without any physical contact. The sensor assembly 814 may also include an optical sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 814 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

[0139] The communication component 816 is configured to facilitate wired or wireless communication between the electronic device 800 and other devices. The electronic device 800 can access a wireless network based on a communication standard, such as WiFi, 2G or 3G, or a combination thereof. In an exemplary embodiment, the communication component 816 receives a broadcast signal or broadcast-related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 816 also includes a near field communication (NFC) module to facilitate short-range communication. For example, the NFC module can be implemented based on radio frequency identification (RFID) technology, infrared data association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology and other technologies.

[0140] In an exemplary embodiment, the electronic device 800 may be implemented by one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components to perform the above methods.

[0141] In an exemplary embodiment, a non-transitory computer-readable storage medium including instructions is also provided, such as a memory 804 including instructions, and the instructions can be executed by a processor 820 of an electronic device 800 to perform the above method. For example, the non-transitory computer-readable storage medium can be a ROM, a random access memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, etc.

[0142] Fig.10 The invention is a block diagram of a battery management device according to an exemplary embodiment.

[0143] Fig.10 1 is a block diagram of a device 1100 for battery management according to an exemplary embodiment. For example, the device 1100 may be provided as a server. Fig.10 , the apparatus 1100 includes a processing component 1122, which further includes one or more processors, and a memory resource represented by a memory 1132 for storing instructions, such as applications, that can be executed by the processing component 1122. The application stored in the memory 1132 may include one or more modules, each corresponding to a set of instructions. In addition, the processing component 1122 is configured to execute instructions to perform the above method.

[0144] The device 1100 may also include a power supply component 1126 configured to perform power management of the device 1100, a wired or wireless network interface 1150 configured to connect the device 1100 to a network, and an input / output (I / O) interface 1158. The device 1100 may operate based on an operating system stored in the memory 1132, such as Windows Server™, MacOS X™, Unix™, Linux™, FreeBSD™, or the like.

[0145] It is to be understood that in the present disclosure, "plurality" refers to two or more than two, and other quantifiers are similar. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the associated objects before and after are in an "or" relationship. The singular forms "a", "the" and "the" are also intended to include plural forms, unless the context clearly indicates other meanings.

[0146] It is further understood that the terms "first", "second", etc. are used to describe various information, but such information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other, and do not indicate a specific order or degree of importance. In fact, the expressions "first", "second", etc. can be used interchangeably. For example, without departing from the scope of the present disclosure, the first information can also be referred to as the second information, and similarly, the second information can also be referred to as the first information.

[0147] It will be further understood that the terms “center”, “longitudinal”, “lateral”, “front”, “back”, “up”, “down”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present embodiment and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation.

[0148] It can be further understood that, unless otherwise specified, “connection” includes a direct connection without other components between the two, and also includes an indirect connection with other components between the two.

[0149] It is further understood that, although the operations are described in a specific order in the drawings in the embodiments of the present disclosure, it should not be understood as requiring the operations to be performed in the specific order shown or in a serial order, or requiring the execution of all the operations shown to obtain the desired results. In certain environments, multitasking and parallel processing may be advantageous.

[0150] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the technical concepts disclosed herein. This application is intended to cover any variations, uses or adaptations of the present disclosure, which follow the general principles of the present disclosure and include common knowledge or customary technical means in the art that are not disclosed in the present disclosure. The specification and examples are intended to be exemplary only, and the true scope and spirit of the present disclosure are indicated by the following scope of rights.

[0151] It should be understood that the present disclosure is not limited to the precise structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the scope of the appended claims.

Claims

1. A battery management circuit, characterized in that: include: A charging and discharging circuit includes a first switch module; A protection module connected to the charge and discharge circuit, the protection module having a first control terminal and a second control terminal; as well as A detection module is connected to the charge-discharge circuit, the detection module has a trigger terminal, the trigger terminal is connected to the first control terminal, the detection module receives the electrical signal of the charge-discharge circuit and outputs a trigger signal to the protection module, The first switch module has a third control end, the second control end is connected to the third control end, and the protection module receives the trigger signal and sends a control signal to the first switch module to control the on and off of the charge and discharge circuit.

2. The battery management circuit according to claim 1, characterized in that: The detection module comprises: The detection end is connected to the charge and discharge circuit, and the detection end is used to detect the electrical signal in the charge and discharge circuit.

3. The battery management circuit according to claim 2, characterized in that: The detection end includes a first detection end and a second detection end; The protection module has a first end and a second end, the first detection end is connected to the first end, and the second detection end is connected to the second end.

4. The battery management circuit according to claim 1, characterized in that: The protection module has a first mode and a second mode, and the control signal includes a first control signal and a second control signal. The protection module outputs a first control signal after receiving the trigger signal in the first mode and switches to the second mode, or After receiving the trigger signal in the second mode, the protection module outputs a second control signal and switches to the first mode.

5. The battery management circuit according to claim 4, characterized in that: After receiving the first control signal, the first switch module is turned on to connect the charge-discharge loop, and after receiving the second control signal, the first switch module is turned off to disconnect the charge-discharge loop.

6. The battery management circuit according to claim 1, characterized in that: The charge-discharge circuit includes a battery cell, the battery cell has a first pole and a second pole, and the battery management circuit further includes: A charge-discharge branch has a first end and a second end, wherein the first end is connected to the first pole, and the second end is connected to the second pole. The charge-discharge branch includes a second switch module and a third switch module, and the second switch module includes a fourth control end, and the second control end is also connected to the fourth control end. The second switch module is turned off after receiving the first control signal, and the second switch module is turned on after receiving the second control signal.

7. The battery management circuit according to claim 6, characterized in that: The charge and discharge branch further includes an impedance module, and the impedance module is used to increase the impedance in the charge and discharge branch.

8. The battery management circuit according to claim 7, characterized in that: The second switch module has a first pole and a second pole, and the impedance module includes: A first resistor, located between the first electrode and the third switch module; and The second resistor is located between the second electrode and the third switch module.

9. The battery management circuit according to claim 6, characterized in that: The first switch module is an N-type MOS tube, and the second switch module is a P-type MOS tube; or The first switch module is a P-type MOS tube, and the second switch module is an N-type MOS tube.

10. The battery management circuit according to claim 4, characterized in that: The first control signal is a high level signal, and the second control signal is a low level signal; or The first control signal is a low level signal, and the second control signal is a high level signal.

11. The battery management circuit according to claim 1, characterized in that: The detection module is a power meter.

12. A battery, characterized in that: include: A battery management circuit as claimed in any one of claims 1 to 11.

13. An electronic device, characterized in that: include: The battery management circuit according to any one of claims 1 to 11; or The battery as claimed in claim 12.

14. The electronic device according to claim 13, characterized in that: The electronic device has a power button, and the power button is the third switch module of the battery management circuit.

15. A battery management method, characterized in that: Applied to the battery management circuit according to any one of claims 1 to 11, the method comprising: Acquiring an electrical signal in the charge-discharge circuit; A trigger signal is output according to the electrical signal.

16. The method according to claim 15, characterized in that Outputting a trigger signal according to the electrical signal comprises: When the electrical signal is within a first threshold range, outputting the trigger signal; and / or When the electrical signal is acquired to be within a second threshold range, the trigger signal is output.

17. The method according to claim 16, characterized in that When the electrical signal is within a first threshold range, the trigger signal is output; and / or when the electrical signal is within a second threshold range, the trigger signal is output, including: After the time for which the electrical signal within the first threshold range is continuously acquired satisfies a first preset time length, outputting the trigger signal; and / or After the time for which the electrical signal within the second threshold range is continuously acquired satisfies a second preset time length, the trigger signal is output.

18. The method according to claim 16, characterized in that The first threshold range is zero current, and the second threshold range is non-zero current.

19. A battery management device, characterized in that: Applicable to the battery charging and discharging circuit according to any one of claims 1 to 11, the device comprising: An acquisition module, used for acquiring an electrical signal in the charge and discharge circuit; The output module is used to output a trigger signal according to the electrical signal.

20. An electronic device, characterized in that: include: processor; a memory for storing processor-executable instructions; Wherein, the processor is configured to: execute the battery management method as described in any one of claims 15 to 18.

21. A non-transitory computer-readable storage medium, characterized in that: When the instructions in the storage medium are executed by a processor of an electronic device, the electronic device is enabled to execute the battery management method as described in any one of claims 15 to 18.

Images