CN114696377A

CN114696377A - Power supply module and battery module

Info

Publication number: CN114696377A
Application number: CN202011578579.1A
Authority: CN
Inventors: 杨瑞福; 谢雪云; 曾耀亿
Original assignee: Beijing Xiaomi Mobile Software Co Ltd
Current assignee: Beijing Xiaomi Mobile Software Co Ltd
Priority date: 2020-12-28
Filing date: 2020-12-28
Publication date: 2022-07-01

Abstract

The present disclosure relates to a power supply module and a battery module; wherein, the power module includes: a power supply circuit having a controlled switching component; the detection circuit is connected with the battery and used for detecting the voltage of the battery and outputting a control signal based on the detected voltage; the controlled end of the controlled switch component is connected with the detection circuit and used for switching between a conducting state and a disconnecting state according to a control signal output by the detection circuit; the controlled switch assembly is in a conducting state, and the power supply circuit is conducted; the controlled switch assembly is in an off state, and the power supply circuit is off. Therefore, the power supply circuit can be switched on or off by detecting the voltage of the battery, so that the charging or discharging of the battery is controlled, and the over-discharging condition in the discharging of the battery is restrained.

Description

Power supply module and battery module

Technical Field

The utility model relates to a charge-discharge technical field especially relates to a power module and battery module.

Background

In order to protect the battery cells during the charging or discharging process of the battery, a protection circuit is provided for the battery. The protection circuit realizes the adjustment of charging or discharging by monitoring the electrical parameters at the two ends of the battery tab line. However, at present, the electrical parameters at two ends of a tab circuit of a Battery are monitored by a Battery monitoring (BS) loop on a circuit protection board (PCM) with a FUSE, which can cause many problems, for example, when the Battery voltage is too low during discharging, leakage occurs in the Battery monitoring loop all the time, that is, an electrical core is over-discharged, which can cause damage to the electrical core of the Battery.

Disclosure of Invention

The present disclosure provides a power supply module and a battery module.

According to a first aspect of the embodiments of the present disclosure, there is provided a power supply module, including:

a power supply circuit having a controlled switching component;

the detection circuit is connected with the battery and used for detecting the voltage of the battery and outputting a control signal based on the detected voltage;

the controlled end of the controlled switch component is connected with the detection circuit and used for switching between a conducting state and a disconnecting state according to a control signal output by the detection circuit;

the controlled switch assembly is in a conducting state, and the power supply circuit is conducted;

the controlled switch assembly is in an off state and the power supply circuit is off.

Optionally, the control signal comprises: a first signal for controlling the controlled switch assembly to be in an off state;

the detection circuit is used for outputting the first signal when the detected voltage is lower than a first preset voltage value.

Optionally, the control signal comprises: a second signal for controlling the controlled switching component to be in a conducting state;

the detection circuit is used for outputting the second signal when the detected voltage is higher than a first preset voltage value and lower than a second preset voltage value; the second preset voltage value is greater than the first preset voltage value.

Optionally, the detection circuit includes:

an electricity meter;

the detection circuit is used for detecting the voltage of the battery through the fuel gauge.

Optionally, the electricity meter comprises:

the power control chip comprises an interrupt pin, and the interrupt pin is connected with the controlled end of the controlled switch component;

and the power control chip is used for outputting the control signal through the interrupt pin.

Optionally, the power supply circuit further includes:

and the current limiting resistor is connected with the controlled switch component and is used for limiting the current on the power supply circuit below a preset current value when the controlled switch component is in a conducting state.

Optionally, the controlled switch assembly comprises:

a metal oxide semiconductor field effect MOS tube;

or the like, or, alternatively,

the switch circuit is composed of a plurality of metal oxide semiconductor field effect MOS tubes.

Optionally, the detection circuit further includes:

and the protection circuit is connected with the power supply circuit and used for monitoring the electrical parameters of the battery during charging or discharging and adjusting the voltage or the current of the power supply circuit.

Optionally, the protection circuit includes:

the protection chip is used for monitoring the electrical parameters of the battery during charging or discharging and outputting an adjusting signal when the electrical parameters do not accord with a preset parameter threshold;

the control assembly, with the protection chip is connected, includes: a gate switch assembly; the gating switch component is used for switching among a plurality of paths with different impedances according to the adjusting signal and providing a charging or discharging path for the battery; wherein the voltages or currents on the different impedance paths are different.

According to a second aspect of the embodiments of the present disclosure, there is provided a battery module including:

a battery, comprising: the first electrode lug and the second electrode lug are arranged opposite to the first electrode lug;

the power supply module according to any one of the first aspect, wherein the power supply module is connected with a first tab and a second tab of the battery;

and the battery management module is connected with the power supply module and used for outputting a charging signal to the power supply module.

The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects:

according to the power supply module provided by the embodiment of the disclosure, the power supply circuit is provided with the controlled switch assembly, and after the detection circuit detects the voltage of the battery, the control signal can be output to the controlled switch assembly according to the detected voltage; the controlled switch assembly can realize the switching between the on state and the off state under the control of the control signal. Because the controlled switch assembly is positioned on the power supply circuit, the on or off of the controlled switch assembly can cause the corresponding on or off of the power supply circuit; when the power supply circuit is disconnected, the charging or discharging of the battery is stopped, and the whole power supply process can be controlled. Therefore, when the subsequent battery is discharged, if the over-discharge of the battery is detected, the power supply circuit can be disconnected by outputting the control signal, so that the over-discharge of the battery is restrained.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

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

Fig. 1 is a schematic diagram of an implementation circuit structure of a power supply module.

Fig. 2 is a first schematic structural diagram of a power supply module according to an exemplary embodiment.

Fig. 3 is a schematic structural diagram of a power supply module according to an exemplary embodiment.

Fig. 4 is a schematic structural diagram three of a power supply module according to an exemplary embodiment.

Fig. 5 is a schematic structural diagram of a power supply module according to an exemplary embodiment.

Fig. 6 is a schematic structural diagram of a power supply module according to an exemplary embodiment.

Fig. 7 is a schematic structural view showing a battery module according to an exemplary embodiment.

Fig. 8 is a schematic structural view of a battery module according to an exemplary embodiment.

Fig. 9 is a block diagram illustrating an apparatus including a battery module according to an exemplary embodiment.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.

Fig. 1 is a schematic diagram of a circuit structure of a power supply module, as shown in fig. 1, the B + and B-pins are used for connecting the positive and negative electrode tabs of the Battery, and R13, R14 and a FUSE (FUSE) form a Battery monitoring (BS) loop. The voltage at the two ends of the battery cell can be detected through the BS loop, namely, after the B + pin and the B-pin are connected with the anode lug and the cathode lug of the battery, the voltage at the two ends of the battery cell can be directly measured through the B + pin and the B-pin. In fig. 1, when the battery is discharged based on the power supply module, if the voltage of the battery cell is too low, the BS loop may leak electricity to make the battery in an over-discharge state, which may damage the service life of the battery. Moreover, when a large current appears in the battery charging process, the power supply module with the structure mainly plays a role in protecting the battery by blowing the fuse, but the fuse cannot be restored after being blown, so that the power supply module is not beneficial to being used for multiple times.

In an embodiment of the present disclosure, a power supply module is provided, and fig. 2 is a schematic structural diagram of a power supply module according to an exemplary embodiment, as shown in fig. 2, the power supply module 200 includes:

a power supply circuit 201 having a controlled switch assembly 2011;

a detection circuit 202 connected to the battery, for detecting a voltage of the battery and outputting a control signal based on the detected voltage;

the controlled end of the controlled switch assembly 2011 is connected to the detection circuit, and is configured to switch between an on state and an off state according to a control signal output by the detection circuit;

the controlled switch assembly 2011 is in a conducting state, and the power supply circuit 201 is conducted;

the controlled switch assembly 2011 is in an off state and the power supply circuit 201 is off.

It should be noted that the power supply module may be any module used in an electronic product with a battery for charging or discharging the battery. The electronic product with a battery may be: a smart phone, a tablet computer, or a wearable electronic device, etc.

Here, the power supply module may be a module that charges a battery, that is, provides power to the battery. The power supply module can also be a module for discharging the battery, namely the battery provides electric quantity for other elements.

The battery in the electronic product may be: lithium batteries or storage batteries and the like which can store electric energy. The battery includes: the battery comprises a shell, a battery cell wrapped in the shell and a positive electrode lug and a negative electrode lug which are positioned on the shell.

In the embodiment of the disclosure, the battery in the electronic product is charged through the power supply module, and the power supply module charges the battery through the power supply circuit. Specifically, the method comprises the following steps: the power supply circuit is connected to the two ends of the positive electrode lug and the negative electrode lug of the battery and charges the battery when the power supply circuit is communicated. Correspondingly, the battery discharges outwards through the power supply module when discharging.

The power supply module has a charging or discharging function and also has a certain protection function, and is used for prolonging the service life of the battery. In the power supply module shown in fig. 1, the protection function is realized by the cooperation of the battery monitoring circuit and the fuse, but there is also a problem that the BS circuit with too low voltage during discharging leaks electricity or the fuse with too large current during charging cannot be recovered after being blown.

In the embodiment of the disclosure, a controlled switch assembly is arranged on a power supply circuit, when the controlled switch assembly is in a conducting state, the power supply circuit is conducted, and a battery is in a charging or discharging state; when the controlled switch assembly is in an off state, the power supply circuit is disconnected, and the charging or discharging of the battery is stopped. Therefore, when unfavorable conditions such as over-discharge (namely, too low voltage) or too high voltage occur in the power supply process, the controlled switch assembly is controlled to be switched from the on state to the off state, the conditions such as over-discharge can be restrained, and the protection effect is achieved.

In the embodiment of the present disclosure, the controlled switch assembly is an electrical component having a switching characteristic, and may be any type of switch that can be controlled to adjust an on/off state. For example, the controlled switching component may be: a metal oxide semiconductor field effect transistor (MOS), a bipolar transistor (BJT), an Insulated Gate Bipolar Transistor (IGBT), or the like.

It should be noted that, because the MOS transistor has a strong antistatic capability, in some embodiments, the controlled switching component may be a switching circuit formed by one or more MOS transistors.

In the embodiment of the disclosure, the voltage of the battery is detected in real time by the detection circuit, and the control signal for controlling the controlled switch assembly to switch between the on state and the off state is output based on the detected voltage. Therefore, the controlled switch assembly is positioned on the power supply circuit, and the on or off of the controlled switch assembly can cause the corresponding on or off of the power supply circuit, and the on or off of the controlled switch assembly is controlled by the control signal output by the detection circuit, so that the charging or discharging control of the battery can be realized.

Here, the control signal output by the detection circuit may be a level signal with opposite polarity, for example, when a first level signal is output, the controlled switch component is in a conducting state; when the second level signal is output, the controlled switch assembly is in an off state. As a specific example, for an NMOS transistor, when the gate voltage is at a first level, the NMOS transistor is in a conducting state, and when the gate voltage is at a second level, the NMOS transistor is in a disconnecting state. The first level is higher than the turn-on voltage of the NMOS transistor, and the second level is lower than the turn-on voltage of the NMOS transistor.

The detection circuit is connected with the battery, can detect the voltage of the battery, and further generates different control signals according to the detected voltage of the battery to output; for example, when the voltage of the battery is detected to be too low, a first control signal is generated to control the controlled switch assembly to be in an off state, and the discharge of the battery is cut off.

Here, which control signal is generated may be determined with reference to a constant voltage when the battery normally operates. And the constant voltage when the battery normally works can be determined according to the type of the battery. Therefore, when the battery is detected to be far lower than the constant voltage in the subsequent use of the battery, the battery is considered to be over-discharged at the time, and the controlled switch assembly can be controlled to be switched into the off state by outputting the control signal, so that the power supply circuit which is discharging the battery is disconnected, and the over-discharge of the battery is restrained.

In some embodiments, the control signal comprises: a first signal for controlling the controlled switch assembly to be in an off state; the detection circuit is used for outputting the first signal when the detected voltage is lower than a first preset voltage value.

Here, the control signal includes: a first signal for controlling the controlled switching assembly to be in an off state.

Since the controlled switch component of the embodiment of the present disclosure performs an on/off function on the power supply circuit, the control signal is the first signal and the second signal that have opposite functions. When the first signal is used for controlling the controlled switch assembly to be in an off state, the second signal is used for controlling the controlled switch assembly to be in an on state.

In some embodiments, the first signal is a first level signal and the second signal is a second level signal. When the first level signal is at a high level, the second level signal is at a low level; or, when the first level signal is at a low level, the second level signal is at a high level.

Here, the first preset voltage value is a voltage value less than a constant voltage value when the battery is discharged; for example, the constant voltage value is 5V, and the first preset voltage value may be any value between less than 3V and 5V. The first preset voltage value may be determined based on an actual voltage fluctuation value in the discharge of the battery.

When the detected battery voltage is smaller than a first preset voltage value, the voltage is too low at the moment, overdischarge occurs, and the battery needs to be protected by disconnecting the charging of the battery, so that the detection circuit outputs a first signal for controlling the controlled switch assembly to be in a disconnected state.

In some embodiments, the control signal comprises: a second signal for controlling the controlled switching component to be in a conducting state; the detection circuit is used for outputting the second signal when the detected voltage is higher than a first preset voltage value and lower than a second preset voltage value; the second preset voltage value is greater than the first preset voltage value.

Here, the first preset voltage value is a voltage value less than a constant voltage value when the battery is discharged; the second preset voltage value is a voltage value which is larger than the constant voltage value and has a difference with the constant voltage value which is smaller than a preset threshold value.

When the battery voltage is higher than the first preset voltage value and lower than the second preset voltage value, the current battery is in a normal working state, and excessive discharge does not occur.

The preset threshold value may be determined based on a voltage fluctuation range in discharging the battery and a damage degree of the battery; the boundary value in the corresponding voltage range when the damage degree of the battery is low during discharging is the preset threshold value.

The difference between the voltage of the battery and the constant voltage value is smaller than a preset threshold value, namely the voltage of the battery during discharging is in a normal range, at the moment, a second signal is output, the controlled switch assembly is in a conducting state through the second signal, and then the charging is guaranteed.

In some embodiments, fig. 3 is a schematic structural diagram of a power supply module according to an exemplary embodiment, and as shown in fig. 3, the detection circuit 202 includes:

an electricity meter 2022;

the detection circuit 202 is configured to detect the voltage of the battery through the electricity meter 2022.

Here, the electricity meter is used to measure the amount of electricity passing in the circuit. In the embodiment of the present disclosure, the voltage of the battery is detected by the fuel gauge connected to the tabs at both ends of the battery.

In some embodiments, the fuel gauge 2022, comprises:

a power control chip 20 including an interrupt pin 21, wherein the interrupt pin 21 is connected to the controlled terminal of the controlled switch assembly 2011;

the power control chip 20 is configured to output the control signal through the interrupt pin 21.

Here, the current meter is integrated with a control function, and outputs a first signal for controlling the controlled switch assembly to be in an off state through an interrupt pin when the battery voltage is detected to be lower than a first preset voltage value. And when the detected voltage is higher than a first preset voltage value and lower than a second preset voltage value, outputting a second signal for controlling the controlled switch component to be in a conducting state through an interruption pin.

The interrupt pin comprises a high state or a low state, and when the interrupt pin is connected with the controlled end of the controlled switch component, the interrupt pin in the low state can enable the controlled switch component connected with the interrupt pin to be in a disconnected state. Correspondingly, the interrupt pin in the high state can make the controlled switch component connected with the interrupt pin in a conducting state.

Here, the power control chip causes the interrupt pin to be set high or low by outputting a high-low level. In some embodiments, the high level may cause the interrupt pin to be high and the low level may cause the interrupt pin to be low. In other embodiments, the low level may cause the interrupt pin to go high and the high level may cause the interrupt pin to go low. The present disclosure does not limit the relationship of the level to the state of the interrupt pin.

It should be noted that, in some embodiments, the detection circuit may also be formed by a microprocessor and a voltage detection circuit; the microprocessor is connected with the voltage detection circuit, detects the voltage of the battery through the voltage detection circuit, sends the voltage to the microprocessor, and outputs a control signal according to the voltage.

In some embodiments, fig. 4 is a schematic structural diagram of a power supply module according to an exemplary embodiment, and as shown in fig. 4, the power supply circuit 201 further includes:

and the current limiting resistor 40 is connected to the controlled switch assembly 2011, and is configured to limit a current on the power supply circuit to be below a preset current value when the controlled switch assembly 2011 is in a conducting state.

As described above, a large current may occur during the charging or discharging process of the battery, and in the BS loop illustrated in fig. 1, the large current is suppressed by blowing the fuse, so as to protect the battery. In the embodiment of the present disclosure, the current limiting resistor is connected in series with the controlled switch component to limit the current.

The preset current value is a standard current value when the battery is charged or discharged, and can be determined according to the model and the type of the battery.

It should be noted that, in the implementation example of the present disclosure, a FUSE is not used, and the FUSE is replaced by a series connection of a current limiting resistor and a controlled switch component, so on one hand, the static electricity prevention capability of the FUSE is weaker than that of an MOS transistor, and there is a risk of being broken by electrostatic discharge (ESD), and by replacing the FUSE with the controlled switch component composed of the MOS transistor, the better stability of the power supply circuit can be improved; on the other hand, the series connection of the current-limiting resistor and the controlled switch component can also reduce the occurrence probability of large current, further improve the stability of the BS loop, and enable the circuit to be used continuously. On the other hand, the MOS tube with the single channel has lower cost than the FUSE, and is favorable for reducing the manufacturing cost of equipment.

In some embodiments, the controlled switch assembly comprises:

a metal oxide semiconductor field effect MOS tube;

or the like, or, alternatively,

Here, the MOS transistor is also referred to as a Field Effect Transistor (FET), and includes a junction field effect transistor or an insulated gate field effect transistor. The method can also comprise the following steps: p type MOS pipe and N type MOS pipe. The MOS tube mainly has the function of converting signals or controlling the on-off of a circuit, and in the embodiment of the disclosure, the MOS tube plays a role of controlling the on-off of the circuit.

The MOS transistor comprises 3 pins which are respectively a G (grid), an S (source) and a D (drain). In the switching circuit, D and S are equivalent to two ends of the circuit to be switched on, and G is a switch control, namely, a controlled end of the embodiment of the disclosure.

And (3) on and off of the MOS tube: for example, an N-type MOS transistor with a turn-on voltage of 3V can be turned on as long as the voltage at the G terminal is 3V higher than the voltage at the S terminal (the voltage at the D terminal is also higher than the voltage at the S terminal). Similarly, a P-type MOS transistor with a turn-on voltage of 3V can be turned on as long as the voltage at the G terminal is lower than the voltage at the S terminal by 3V (the voltage at the S terminal is higher than the voltage at the D terminal).

In the embodiment of the present disclosure, the controlled switch component may be composed of one MOS transistor, and the controlled switch component may be composed of a plurality of MOS transistors connected in series. The form of the controlled switch assembly is not limited in the implementation of the present disclosure.

Fig. 5 is a schematic structural diagram of a power supply module according to an exemplary embodiment, and as shown in fig. 5, a power control chip U3, resistors R11, R12, R7, R8, R5, and R6 connected to U3, and capacitors C9, C10, and C11 constitute an electricity meter. Q3 and capacitor C12 form a controlled switching component. The controlled end of the controlled switch assembly, namely the grid G, is connected to an interrupt pin (INT) of a power control chip U3, the source S end of the controlled switch assembly is connected in series with a current limiting resistor R14 and further connected to a pin B-of the battery, and the drain D end of the controlled switch assembly is connected to a pin B-of another position of the battery. When the controlled switch assembly is in an off state, the connection between the pin B-of the battery and the pole lug is considered to be disconnected, and the charging or discharging is cut off.

In some embodiments, fig. 6 is a schematic structural diagram of a power supply module according to an exemplary embodiment, and as shown in fig. 6, the detection circuit 202 further includes:

and the protection circuit 60 is connected with the power supply circuit 201 and used for monitoring the electrical parameters when the battery is charged or discharged and adjusting the voltage or the current of the power supply circuit.

Here, the electrical parameters when the battery is charged or discharged include: voltage values and/or current values.

The protection circuit is connected with the power supply circuit, after the voltage value and the current value of the battery are collected, the voltage value and the current value are compared with a preset voltage threshold value and a preset current threshold value after operation processing, and if each charging parameter value is within a normal range, the protection chip controls and selects a corresponding path.

In some embodiments, the protection circuit includes:

Here, the preset parameter threshold includes: a preset voltage threshold and/or a preset current threshold. The preset voltage threshold and the preset current threshold are values corresponding to charging parameters corresponding to the battery in a normal charging state.

Taking the voltage value as an example, when the voltage value is compared with a preset voltage threshold after being subjected to operation processing, and it is determined that the current voltage value is greater than the preset threshold, an adjustment signal is output to the control component, so that the control component switches among a plurality of paths with different impedances based on the adjustment signal, and provides a charging or discharging path for the battery. Due to the fact that voltages on different impedance paths are different, the voltage on the power supply circuit can be adjusted, and further protection effect on the battery is achieved.

The gating switch component comprises a switch circuit formed by one or more MOS tubes.

Here, as shown in fig. 5, U1 and U2 are protection chips, and Q1, Q2, Q3 and Q4 constitute a control component, and the control component includes a plurality of MOS transistors, and the MOS transistors perform a path switching function. Here, the protection chip U1 and the control component located below form a first protection sub-circuit, the protection chip U2 and the control component located below form a second protection sub-circuit, and the first protection sub-circuit and the second protection sub-circuit are connected in parallel to form a secondary protection function. The excessive voltage or current is further reduced by secondary protection.

Therefore, according to the power supply module provided by the embodiment of the disclosure, since the controlled switch assembly is arranged on the power supply circuit, after the voltage of the battery is detected by the detection circuit, the control signal can be output to the controlled switch assembly according to the detected voltage; the controlled switch assembly can realize the switching between the on state and the off state under the control of the control signal. Because the controlled switch assembly is positioned on the power supply circuit, the on or off of the controlled switch assembly can cause the corresponding on or off of the power supply circuit; when the power supply circuit is disconnected, the battery charging or discharging is stopped, and the whole power supply process can be controlled. Therefore, when the subsequent battery is discharged, if the over-discharge of the battery is detected, the power supply circuit can be disconnected by outputting the control signal, so that the over-discharge of the battery is restrained.

The present disclosure also provides a battery module, and fig. 7 is a schematic structural diagram of a battery module according to an exemplary embodiment, as shown in fig. 7, the battery module 700 includes:

a battery 701, comprising: the first electrode lug and the second electrode lug are arranged opposite to the first electrode lug;

the power supply module 702 of any of the above embodiments is connected to the first tab and the second tab of the battery 701;

the battery management module 703 is connected to the power supply module 702, and is configured to output a charging signal to the power supply module 702.

Here, the battery in the embodiment of the present disclosure is mainly composed of two pieces, that is, the battery includes: a battery cell and a Battery Management System (BMS). The electric core is equivalent to the heart of the battery and mainly comprises: the shell and positive electrode material, negative electrode material, electrolyte and diaphragm are located in the shell. The management system is equivalent to the brain of the battery and mainly comprises: the battery management module comprises a Printed Circuit Board (PCB), a battery management module positioned on the PCB, a resistor, a capacitor and the like.

The power supply module is positioned between the battery management module and the battery. When the battery is charged, the battery management module sends a charging signal to the power supply module, so that a power supply circuit is formed to charge the battery after the power supply module is connected with the first lug and the second lug which are oppositely arranged on the battery.

The battery management module includes: power Management Integrated Chips (PMICs). The PMIC encapsulates the traditional multi-output power supply in one chip, so that the multi-power application scene has higher efficiency and smaller volume.

It should be noted that, because the charging loop has line impedance, a certain voltage difference Δ V exists between the cell voltage and the charging control PMIC, and the PMIC can compensate the voltage difference Δ V of the battery in the constant voltage phase (HCV) at the charging end by a certain compensation, thereby ensuring the charging capacity.

For more precise calculation of Δ V, the PMIC detects the voltage V1 across the battery cell through the BS function on the protection board (PCM) of the power supply module, and detects the voltage V2 across the battery cell through the P + and P-pins on the PCM, so Δ V is equal to V1-V2. It should be noted that the PMIC measures the voltage V1 across the battery cell through the B + and B-pins on the power supply module.

It should be noted that the detection circuit and the power supply circuit on the power supply module form the protection board.

In some embodiments, the battery module further includes:

and the Application Processor (AP) is connected with the PMIC of the battery management module and is used for sending a charging instruction to the PMIC when the charging operation is detected.

Fig. 8 is a schematic structural diagram of a battery module according to an exemplary embodiment, where, as shown in fig. 8, the battery module 800 includes: a battery 801, a power supply module 802 connected to the battery 801, a battery management module 803, and an Application Processor (AP) 804. Here, the PMIC generates a corresponding charging signal based on the detected current charging parameter to realize charging of the battery based on the charging command.

Therefore, the battery module provided by the embodiment of the disclosure can enable the BS function to be in a normal state due to the power supply module in the embodiment, and the situations of too large current or too small voltage during charging can be reduced, which is beneficial to ensuring the service life of the battery.

Fig. 9 illustrates a block diagram of an apparatus 1800 including a battery module according to an exemplary embodiment. For example, the apparatus 1800 may be a mobile phone, computer, digital broadcast terminal, messaging device, game console, tablet device, medical device, fitness device, personal digital assistant, and so forth.

Referring to fig. 9, the apparatus 1800 may include one or more of the following components: a processing component 1802, a memory 1804, a power component 1806, a multimedia component 1808, an audio component 1810, an input/output (I/O) interface 1812, a sensor component 1814, and a communications component 1816.

The processing component 1802 generally controls the overall operation of the device 1800, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. The processing component 1802 may include one or more processors 1820 to execute instructions to perform all or part of the steps of the methods described above. Further, the processing component 1802 can also include one or more modules that facilitate interaction between the processing component 1802 and other components. For example, the processing component 1802 can include a multimedia module to facilitate interaction between the multimedia component 1808 and the processing component 1802.

The memory 1804 is configured to store various types of data to support operation at the apparatus 1800. Examples of such data include instructions for any application or method operating on the device 1800, contact data, phonebook data, messages, images, videos, and the like. The memory 1804 may be implemented by any type or combination of volatile or non-volatile storage devices, 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 or optical disks.

Power components 1806 provide power to various components of device 1800. The power components 1806 may include: a power management system, one or more power sources, and other components associated with generating, managing, and distributing power for the apparatus 1800.

The multimedia component 1808 includes a screen that provides an output interface between the device 1800 and a 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 an input signal from a 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 boundary of a touch or slide action, but also detect the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 1808 includes a front facing camera and/or a rear facing camera. The front-facing camera and/or the rear-facing camera may receive external multimedia data when the device 1800 is in an operating mode, such as a shooting mode or a video mode. Each front camera and/or rear camera may be a fixed optical lens system or have a focal length and optical zoom capability.

Audio component 1810 is configured to output and/or input audio signals. For example, the audio component 1810 includes a Microphone (MIC) configured to receive external audio signals when the apparatus 1800 is in operating modes, such as a call mode, a recording mode, and a voice recognition mode. The received audio signals may further be stored in the memory 1804 or transmitted via the communication component 1816. In some embodiments, audio component 1810 may further comprise a speaker for outputting audio signals.

I/O interface 1812 provides an interface between processing component 1802 and peripheral interface modules, which may be 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.

The sensor component 1814 includes one or more sensors for providing various aspects of state assessment for the apparatus 1800. For example, the sensor assembly 1814 can detect an open/closed state of the device 1800, the relative positioning of components such as a display and keypad of the device 1800, the sensor assembly 1814 can also detect a change in position of the device 1800 or a component of the device 1800, the presence or absence of user contact with the device 1800, orientation or acceleration/deceleration of the device 1800, and a change in temperature of the device 1800. The sensor assembly 1814 may include a proximity sensor configured to detect the presence of a nearby object without any physical contact. The sensor assembly 1814 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 1814 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

The communication component 1816 is configured to facilitate wired or wireless communication between the apparatus 1800 and other devices. The device 1800 may 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 1816 receives a broadcast signal or broadcast associated information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 1816 further includes a Near Field Communication (NFC) module to facilitate short-range communications. For example, the NFC module may be implemented based on Radio Frequency Identification (RFID) technology, infrared data association (IrDA) technology, Ultra Wideband (UWB) technology, Bluetooth (BT) technology, or other technologies.

In an exemplary embodiment, the apparatus 1800 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, micro-controllers, microprocessors or other electronic components for performing the above-described methods.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It will be understood that the present disclosure is not limited to the precise arrangements 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 appended claims.

Claims

1. A power module, comprising:

a power supply circuit having a controlled switching component;

2. The power supply module of claim 1, wherein the control signal comprises: a first signal for controlling the controlled switch assembly to be in an off state;

3. The power supply module of claim 1, wherein the control signal comprises: a second signal for controlling the controlled switching component to be in a conducting state;

4. The power supply module of claim 1, wherein the detection circuit comprises:

an electricity meter;

5. The power supply module of claim 4, wherein the electricity meter comprises:

6. The power supply module of claim 1, wherein the power supply circuit further comprises:

and the current limiting resistor is connected with the controlled switch component and used for limiting the current on the power supply circuit below a preset current value when the controlled switch component is in a conducting state.

7. The power supply module of claim 1, wherein the controlled switch assembly comprises:

a metal oxide semiconductor field effect MOS tube;

or the like, or, alternatively,

8. The power supply module of claim 1, wherein the detection circuit further comprises:

9. The power supply module of claim 8, wherein the protection circuit comprises:

10. A battery module, comprising:

the power module of any of claims 1-9 coupled to a first tab and a second tab of the battery;