Battery management module and awakening method

Abstract

The invention belongs to the technical field of battery management, and particularly relates to a battery management module and an awakening method. The battery management module comprises a control unit, a power supply unit, a signal processing unit and a signal isolation unit. A first communication port of the signal processing unit is connected with an external control terminal and is used for receiving an awakening instruction of the control terminal; a signal output port of the signal processing unit and a signal receiving port of the power supply unit are electrically connected with the signal isolation unit respectively; the signal processing unit sends a first wake-up signal to the power supply unit after receiving the wake-up instruction; a power transmission port of the power supply unit is electrically connected with a power supply port of the control unit; the power supply unit supplies power to the control unit after receiving the first wake-up signal; a second communication port of the signal processing unit and a second communication port of the control unit are electrically connected with the signal isolation unit respectively; the control unit is awakened after being powered on and sends a second awakening signal to the signal processing unit.

Description

Technical Field

[0001] The present invention belongs to the technical field of battery management, and in particular relates to a battery management module and a wake-up method. Background Art

[0002] As power batteries are favored in both the industry and capital levels, their brilliance has gradually shifted to their "close relative" energy storage battery track. The new energy vehicle industry linked to power batteries has moved from policy-driven to market-driven, and is gradually getting better. It is currently in the 1-N development stage; in contrast, the energy storage industry is in the 0-1 stage, which is immature but has great potential.

[0003] Energy storage literally means storing energy. Simply put, it is to convert energy into energy that exists stably under natural conditions. That is, when there is excess energy, special devices are used to store the energy, and the energy can be released when needed, thereby regulating the mismatch between energy supply and demand in time, space and intensity.

[0004] At present, after the energy storage system is powered on, the BMC (Battery Manage Controller) and CMC (Cell Measurement Controller) of the battery management system are always in a charged and full-load operating state. When the specific application scenario is in an energy storage power station, the energy storage system is often in a static state for a long time without charging or discharging. However, the BMC and CMC working at full load greatly increase the power consumption of the entire system. At the same time, when the energy storage system is stationary for a long time and cannot be charged in time, the battery voltage will continue to decrease due to the consumption of the CMC detection circuit and the self-discharge of the battery cell, eventually leading to over-discharge of the battery.

[0005] Therefore, BMC and CMC do not have a sleep function and related wake-up circuits and methods to enter low power consumption, resulting in high power consumption and unnecessary consumption. In addition, the energy storage system is in high power consumption mode for a long time. When it is idle for too long, it is very easy to cause over-discharge of the battery, which is less safe. When it continues to work at high power consumption and high current, it will affect the service life of the device. In addition, the module units in the energy storage system do not have communication isolation, which can easily affect the communication signals between different BMCs, thereby affecting the wake-up and sleep of the BMC. Summary of the invention

[0006] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a wake-up circuit and method for a battery management module (BMC), which can switch the battery management module (BMC) from a low power mode to a working mode according to the wake-up instruction of the energy storage system, thereby waking up the CMC. At the same time, a signal isolation device is added to effectively avoid interference with the communication signal.

[0007] To achieve the above-mentioned purpose and other related purposes, the present invention provides a battery management module, including: a control unit, a power supply unit, a signal processing unit, and a signal isolation unit; the first communication port of the signal processing unit is connected to an external control terminal for receiving a wake-up instruction from the control terminal; the signal output port of the signal processing unit and the signal receiving port of the power supply unit are electrically connected to the signal isolation unit respectively; after receiving the wake-up instruction, the signal processing unit sends a first wake-up signal to the signal receiving port of the power supply unit through the signal output port; the power transmission port of the power supply unit is electrically connected to the power supply port of the control unit; after receiving the first wake-up signal, the power supply unit supplies power to the power supply end of the control unit through the power transmission port; the second communication port of the signal processing unit and the second communication port of the control unit are electrically connected to the signal isolation unit respectively; the control unit wakes up after being powered on, and sends a second wake-up signal to the second communication port of the signal processing unit through the second communication port; wherein the signal isolation unit transmits and isolates the first wake-up signal and the second wake-up signal.

[0008] According to a specific embodiment of the present invention, the signal isolation unit includes: a first isolation sub-unit, one end of which is electrically connected to the second communication port of the signal processing unit, and the other end is electrically connected to the second communication port of the control unit; a second isolation sub-unit, one end of which is electrically connected to the signal output port of the signal processing unit, and the other end is electrically connected to the signal receiving port of the power supply unit.

[0009] According to a specific embodiment of the present invention, the first isolation subunit includes a four-channel digital isolator.

[0010] According to a specific embodiment of the present invention, the second isolation subunit includes an optocoupler isolator.

[0011] According to a specific embodiment of the present invention, the third communication port of the signal processing unit and the third communication port of the control unit are electrically connected to the signal isolation unit respectively.

[0012] According to a specific embodiment of the present invention, the signal isolation unit further includes: a third isolation subunit, one end of which is electrically connected to the third communication port of the signal processing unit, and the other end of which is electrically connected to the third communication port of the control unit.

[0013] According to a specific embodiment of the present invention, the third isolation subunit includes a dual-channel digital isolator.

[0014] According to a specific embodiment of the present invention, the first communication port of the control unit is electrically connected to the first communication port of the power supply unit.

[0015] A battery management system comprises at least one battery management module, a plurality of battery cell sampling modules, a control terminal, and an ACDC (alternating current-to-direct current) converter; the input end of the ACDC converter is connected to a power grid, and the output end is electrically connected to a power supply unit, a signal processing unit, and a signal isolation unit in the battery management module respectively; wherein the fourth communication port of the control unit of the battery management module is respectively connected to the fourth communication port of the control unit of each of the battery cell sampling control modules; the control terminal is electrically connected to the first communication port of the signal processing unit and the control end of the ACDC converter.

[0016] An energy storage system, characterized by comprising the battery management system described above.

[0017] A wake-up method for a battery management module, comprising: a signal processing unit receives a wake-up instruction from an external control terminal through a first communication port, generates a first wake-up signal according to the wake-up instruction, and sends the first wake-up signal through a signal output port; a power supply unit receives the first wake-up signal through a signal receiving port, wakes up the power supply unit according to the first wake-up signal, and supplies power to a control unit through a power supply end; the control unit wakes up after the power supply end is powered, and sends a second wake-up signal for waking up the signal processing unit to a second communication port of the signal processing unit through a second communication port.

[0018] According to a specific embodiment of the present invention, it further includes: after the signal processing unit is awakened, the fourth communication port of the control unit sends a third awakening signal for awakening the cell sampling control module to the fourth communication port of the control unit in the cell sampling control module.

[0019] The present invention provides a battery management module and a corresponding awakening method, which can switch from a low power consumption mode to an operating mode according to an awakening instruction of an upper control, and switch from an operating mode to a low power consumption mode according to a sleep instruction of an upper control, thereby preventing an energy storage system from being in a high power consumption mode for a long time, which affects the service life of the device, and preventing the energy storage system from being stationary for a long time, which causes the battery to be over-discharged.

[0020] In addition, a signal isolation unit is added to the battery management module, which can effectively avoid the influence of other electrical signals on the first wake-up signal and the second wake-up signal, as well as mutual interference between other electrical signals, greatly improving the reliability and stability of the battery management module, the battery management system, and the energy storage system. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic structural diagram of a specific embodiment of a battery management module provided by the present invention;

[0022] Figure 2A circuit topology diagram of a specific embodiment of a battery management module provided by the present invention;

[0023] Figure 3 A schematic structural diagram of a specific embodiment of a battery management system provided by the present invention;

[0024] Figure 4 The present invention is a flowchart of a specific embodiment of a method for waking up a battery management module provided by the present invention. DETAILED DESCRIPTION

[0025] In order to facilitate understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. Embodiments of the present application are provided in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0027] It is understood that the terms "first", "second", etc. used in this application may be used herein to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish a first element from another element. For example, without departing from the scope of this application, a first resistor may be referred to as a second resistor, and similarly, a second resistor may be referred to as a first resistor. Both the first resistor and the second resistor are resistors, but they are not the same resistor.

[0028] It can be understood that the “connection” in the following embodiments should be understood as “electrical connection”, “communication connection”, etc. if the connected circuits, modules, units, etc. have electrical signals or data transmission between each other.

[0029] It can be understood that “at least one” means one or more, “plurality” means two or more, and “at least a portion of an element” means a part or all of an element.

[0030] When used herein, the singular forms "a", "an", and "said / the" may also include plural forms, unless the context clearly indicates otherwise. It should also be understood that the terms "include / comprise" or "have" and the like specify the presence of stated features, wholes, steps, operations, components, parts, or combinations thereof, but do not exclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts, or combinations thereof. At the same time, the term "and / or" used in this specification includes any and all combinations of the relevant listed items.

[0031] First of all, it should be noted that in order to enable people in this technical field to better understand the present application scheme, a brief description of the prior art is given.

[0032] BMS (Battery Management System) is mainly composed of BMC, CMC, and some connecting devices.

[0033] When BMS is applied in the field of vehicle power battery technology, BMC mainly detects the temperature, current, voltage and other information of the entire battery pack, and is responsible for communication and diagnosis with the vehicle CAN bus; CMC mainly controls the single cell voltage, module voltage, module temperature and other information of all battery cells in a single module. BMC is used to manage the working status of CMC and realize battery monitoring and control.

[0034] When BMS is used in energy storage power stations, a three-level architecture is usually adopted, namely slave control, master control, and master control, to achieve hierarchical management and control from battery module-cluster-stack. Among them, the first level (slave control), namely CMC, mainly realizes the collection of battery cell (cell) voltage and temperature. Information collection communicates with the second level through a communication link, usually using CAN bus or daisy chain communication. The second level (master control), namely BMC, mainly realizes the collection of battery cluster voltage, current, battery cluster insulation information, the collection of first-level information, battery status estimation, etc., usually using CAN bus or Ethernet communication. The third level (master control), BMS system management host, mainly collects information transmitted by the second level, stores and displays the information, etc. It has real-time alarm function, as well as the control and contact feedback function of the main circuit breaker, and monitors and controls the entire system.

[0035] In summary, this application is aimed at the BMS system in the energy storage power station that has no sleep function and related wake-up circuit and low-power method, which generates unnecessary consumption and even affects the service life of the device. Therefore, a battery management module, a battery management system, and an energy storage system are proposed, so that the system can switch between low-power mode and working mode to reduce unnecessary consumption.

[0036] Example 1

[0037] See also Figure 1-2 As shown, a battery management module (BMC) includes: a control unit 10, a power supply unit 20, a signal processing unit 40, and a signal isolation unit 30. Among them, the first communication port (CANH high-level signal line, CANHL low-level signal line) of the signal processing unit 40 is connected to an external control terminal (the master control in the energy storage system), and the first communication port of the signal processing unit 40 and the external control terminal communicate and interact through a first communication protocol; the signal output port of the signal processing unit 40 and the signal receiving port of the power supply unit 20 are respectively electrically connected to the signal isolation unit 30; the power transmission port of the power supply unit 20 is electrically connected to the power supply port of the control unit 10; the second communication port of the signal processing unit 40 and the second communication port of the control unit 10 are respectively electrically connected to the signal isolation unit 30, and the second communication port of the signal processing unit 40 and the second communication port of the control unit 10 communicate and interact through a second communication protocol; the signal isolation unit 30 is used to transmit and isolate the communication signal between the control unit 10 and the signal processing unit 40, and the signal between the signal processing unit 40 and the power supply unit 20. In addition, the power supply unit 20, the signal processing unit 40, and the signal isolation unit 30 are also used to access an external power supply to obtain electrical energy.

[0038] Specifically, the wake-up process of the battery management module is as follows: the signal processing unit 40 is used to receive the wake-up instruction sent by the superior control, that is, the external control terminal, through the first communication port, and generate a first wake-up signal according to the wake-up instruction, and send it to the power supply unit 20 through the signal output port to enable the power supply unit 20 to switch from the low power mode to the working mode. The power supply unit 20 receives the first wake-up signal transmitted and isolated by the signal isolation unit 30 through the signal receiving port, and wakes up according to the first wake-up signal, switches from the low power mode to the working mode, and supplies power to the control unit 10 through the power transmission port. The control unit 10 is awakened after the power supply unit 20 supplies power, that is, switches from the low power mode to the working mode, and communicates with the signal processing unit 40 through the second communication protocol, and sends a second wake-up signal for waking up the signal processing unit 40, that is, communicates and interacts through the second communication port of the control unit 10 and the second communication port of the signal processing unit 40. The signal processing unit 40 receives the second wake-up signal transmitted and isolated by the signal isolation unit 30 through the second communication port, and wakes up according to the second wake-up signal, switching from the low power consumption mode to the working mode, so that the battery management module completes the entire wake-up process and switches to the working mode, so that the managed battery starts charging and discharging.

[0039] In practical applications, after switching to the working mode, the power supply unit 20 first provides an enabling voltage signal to the control unit 10 to start it. After starting, the control unit 10 communicates and interacts with the first communication port of the power supply unit 20 through the first communication port. For example, the control unit 10 informs the power supply unit 20 of the required working voltage, and completes the wake-up after the power transmission port of the power supply unit 20 outputs the corresponding working voltage. This application does not limit this. The modifications and embellishments made to the embodiments of the present invention by those skilled in the art without departing from the spirit of the present invention still fall within the scope of the invention application of the present invention.

[0040] In a specific embodiment, the signal isolation unit 30 can not only isolate the interference of other electrical signals in the battery management module on the first wake-up signal and the second wake-up signal.

[0041] In practical applications, the entire wake-up process of the battery management module includes not only the transmission of the second wake-up signal between the control unit 10 and the signal processing unit 40, and not only the transmission of the first wake-up signal between the signal processing unit 40 and the power supply unit 20, but also many other electrical signals to enable the battery management module to operate normally. The signal isolation unit 30 can prevent other electrical signals from interfering with the first wake-up signal and the second wake-up signal to ensure the normal progress of the wake-up process.

[0042] In addition, when the battery management module is working normally, the signal isolation unit 30 can effectively avoid the influence of other signals by converting electrical signals into magnetic signals or optical signals for transmission, thereby ensuring normal communication between various unit modules.

[0043] In this embodiment, the signal isolation unit 30 includes: a first isolation sub-unit 31 and a second isolation sub-unit 32, and the first isolation sub-unit 31 is electrically connected between the control unit 10 and the signal processing unit 40, and the second isolation sub-unit 32 is electrically connected between the signal processing unit 40 and the power supply unit 20.

[0044] Specifically, one end of the first isolation subunit 31 is electrically connected to the second communication port of the signal processing unit 40, and the other end is electrically connected to the second communication port of the control unit 10. One end of the second isolation subunit 32 is electrically connected to the signal output port of the signal processing unit 40, and the other end is electrically connected to the signal receiving port of the power supply unit 20, so as to electrically isolate the second communication port of the signal processing unit 40 from the second communication port of the control unit 10, and prevent electrical noise from affecting the communication signal transmitted between the second communication port of the signal processing unit 40 and the second communication port of the control unit 10.

[0045] Meanwhile, in the present embodiment, the second communication protocol used between the second communication port (SPI) of the control unit 10 and the second communication port (SPI) of the signal processing unit 40 is the SPI (Serial Peripheral Interface) communication protocol. Therefore, the first isolation subunit 31 uses a four-channel digital isolator, which can isolate the input signal and the output signal to prevent the transmission of interference signals, which is very important for maintaining signal integrity and reducing transmission errors.

[0046] In addition, in a preferred embodiment, the first wake-up signal sent by the signal processing unit 40 through the signal output port (INT interface) can be a level signal, and the second isolation subunit 32 adopts an optocoupler isolator, and the level signal can control the switch in the optocoupler isolator so that the optocoupler isolator is turned on. And the level signal is pulled to a high level and output from the optocoupler isolator, and is transmitted to the power supply unit 20 to enable the power supply unit 20 so that it is awakened. Among them, the signal processing unit 40INT interface is only used to enable the power supply unit 20 through a level signal, and the optocoupler can realize unidirectional transmission of the signal, so that the input and output are completely electrically isolated, with strong anti-interference ability and long service life. At the same time, since the first wake-up signal is a level signal, the optocoupler can play a role in level conversion. Therefore, an optocoupler isolator is preferably used as the second isolation subunit 32.

[0047] It should be noted that the signal isolation unit 30 includes but is not limited to the above-mentioned isolator, which can be selected according to actual needs and requirements. The modifications and improvements made to the embodiments of the present invention by those skilled in the art without departing from the spirit of the present invention still fall within the scope of the invention application of the present invention.

[0048] In a specific embodiment, the control unit 10 also includes a third communication port, and the signal processing unit 40 also includes a third communication port, and they are respectively electrically connected to the signal isolation unit 30; the third communication port of the signal processing unit 40 and the third communication port of the control unit 10 are communicatively connected via a third communication protocol, which serves as another communication channel between the signal processing unit 40 and the control unit 10 and can be used to transmit other communication information. For example, the control unit 10 can send communication information such as a sleep signal to the signal processing unit 40.

[0049] Therefore, the signal isolation unit 30 further includes a third isolation subunit 33, which is electrically connected between the control unit 10 and the signal processing unit 40. Specifically, one end of the third isolation subunit 33 is electrically connected to the third communication port of the signal processing unit 40, and the other end is electrically connected to the third communication port of the control unit 10. Similarly, the electrical isolation between the third communication port of the signal processing unit 40 and the third communication port of the control unit 10 is ensured.

[0050] In this embodiment, the third communication protocol adopted by the third communication port (RX receiving, TX sending) of the control unit 10 and the third communication port (RX, TX) of the signal processing unit 40 is the CAN (Controller Area Network) communication protocol. Therefore, according to the interface form of the third communication port (RX, TX) of the control unit 10 and the third communication port (RX, TX) of the signal processing unit 40, the third isolation subunit 33 adopts a dual-channel digital isolator to maintain the integrity of the communication signal and reduce transmission errors.

[0051] In a specific embodiment, the control unit 10 may adopt an MCU (Microcontroller Unit), and the signal processing unit 40 may adopt a CAN transceiver. Specifically, in practical applications, the MCU may adopt other models such as MPC5746, SPC58NH, TC377TP, etc. The CAN transceiver may adopt other models such as TJA1145ATK / FD, TLT9252VLC, TCAN1145, etc. In addition, the digital isolator used by the first isolation subunit 31 and the third isolation subunit 33 may adopt other models such as ADUM5401, ISOW7841DWE, ISOW7741DWE, etc. The optical coupler used by the second isolation subunit 32 may adopt other models such as LX9175, TLX9185, AQY212GS, etc.

[0052] It should be noted that the device model provided by the above-mentioned electronic device is only used as a preferred practical application solution, including but not limited to the provided one. Other types of devices can be used according to actual conditions without limitation. The modifications and improvements made to the embodiments of the present invention by those skilled in the art without departing from the spirit of the present invention still fall within the scope of the invention application patent of the present invention.

[0053] In summary, the above-mentioned battery management module can not only realize wake-up, that is, switch from low power consumption mode to working mode, but also realize sleep, that is, switch from working mode to low power consumption mode.

[0054] Specifically, the sleep process of the battery management module is as follows: the signal processing unit 40 is used to receive the sleep command sent by the superior control, that is, the external control terminal, through the first communication port, and generate a first sleep signal according to the sleep command, and send it to the control unit 10 through the second communication port or the third communication port, and the signal processing unit 40 switches from the working mode to the low power mode after sending the first sleep signal, and enters sleep. After the control unit 10 receives the first sleep signal transmitted and isolated by the signal isolation unit 30 through the second communication port or the third communication port, it controls the power supply unit 20 to enter the low power mode, that is, through the first communication port and the first communication port of the power supply unit 20, the communication interaction is sent to make the power supply unit 20 sleep. The power supply unit 20 switches from the working mode to the low power mode according to the second sleep signal and enters sleep. At the same time, when the power supply unit 20 enters sleep, its power transmission port will stop supplying power, and the control unit 10 automatically switches from the working mode to the low power mode and enters sleep, so that the battery management module completes the entire sleep process and switches to the low power mode to avoid power loss.

[0055] It should be noted that the signal isolation unit 30 has low power consumption and does not participate in the wake-up process and the sleep process in this embodiment to avoid occupying too many communication resources.

[0056] Example 2

[0057] See also Figure 3 As shown, this embodiment also provides a battery management system, including at least one of the above-mentioned battery management modules 100, a plurality of battery cell sampling control modules (CMC) 200, a control terminal 300, and an ACDC converter 400. Specifically, the input end of the ACDC converter 400 is connected to the power grid, and the output end is electrically connected to the power supply unit, the signal processing unit, and the signal isolation unit in the battery management module 100, respectively, to supply power to them.

[0058] The fourth communication port of the control unit of the battery management module 100 is respectively connected to the fourth communication ports of the control units of the multiple cell sampling control modules 200 managed by it, so as to control their operation. In addition, the switching between the operation mode and the low power consumption mode of the cell sampling control module 200 is controlled by the corresponding battery management module 100.

[0059] Specifically, when the control unit of the battery management module 100 is awakened, the third awakening signal is sent to the control unit of the cell sampling control module 200 through the fourth communication port, so that the control unit of the cell sampling control module 200 is awakened, and then the entire cell sampling control module 200 is awakened. When the control unit of the battery management module 100 receives the first sleep signal of the signal processing unit, the third sleep signal is sent to the control unit of the cell sampling control module 200 through the fourth communication port, so that the control unit of the cell sampling control module 200 controls other unit modules of the cell sampling control module 200 to enter sleep.

[0060] The control terminal 300 confirms whether to enter the working mode or the low power consumption mode according to the data information of the system, and sends a wake-up instruction or a sleep instruction to the first communication port of the signal processing unit of the battery management module 100 accordingly. In this embodiment, the first communication protocol adopted between the control terminal 300 and the signal processing unit of the battery management module 100 is the CAN communication protocol, for example, through the CAN bus communication interaction, and the wake-up instruction and the sleep instruction can be a CAN message of a specific frame. In addition, the control terminal 300 is also connected to the control end of the ACDC converter 400 to control its operation.

[0061] Example 3

[0062] This embodiment also provides an energy storage system, including the above-mentioned battery management system.

[0063] Example 4

[0064] See also Figure 4 As shown, this embodiment also provides a method for waking up a battery management module, including:

[0065] Step S100: The signal processing unit receives a wake-up instruction from an external control terminal through a first communication port, generates a first wake-up signal according to the wake-up instruction, and sends the first wake-up signal through a signal output port.

[0066] Step S200: The power supply unit receives a first awakening signal through a signal receiving port, and wakes up the power supply unit according to the first awakening signal to supply power to the control unit through the power supply end.

[0067] Step S300: The control unit wakes up after the power supply end is powered, and sends a second wake-up signal for waking up the signal processing unit to the second communication port of the signal processing unit through the second communication port.

[0068] Step S400: After the signal processing unit is awakened, the fourth communication port of the control unit sends a third awakening signal for awakening the cell sampling control module to the fourth communication port of the control unit in the cell sampling control module.

[0069] In summary, the present invention provides a battery management module and a corresponding wake-up method, which can switch from a low power consumption mode to a working mode according to a wake-up instruction of an upper control, and switch from a working mode to a low power consumption mode according to a sleep instruction of an upper control, thereby avoiding the energy storage system being in a high power consumption mode for a long time, affecting the service life of the device, and the energy storage system being stationary for a long time, causing over-discharge of the battery.

[0070] In addition, a signal isolation unit is added to the battery management module, which can effectively avoid the influence of other electrical signals on the first wake-up signal and the second wake-up signal, as well as mutual interference between other electrical signals, greatly improving the reliability and stability of the battery management module, the battery management system, and the energy storage system.

[0071] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

[0072] In the description of this specification, the description with reference to the terms "some embodiments", "other embodiments", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic description of the above terms does not necessarily refer to the same embodiment or example.

[0073] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0074] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. A battery management control module, characterized in that: include: A control unit, a power supply unit, a signal processing unit, and a signal isolation unit; The first communication port of the signal processing unit is connected to an external control terminal for receiving a wake-up instruction from the control terminal; The signal output port of the signal processing unit and the signal receiving port of the power supply unit are electrically connected to the signal isolation unit respectively; after receiving the wake-up instruction, the signal processing unit sends a first wake-up signal to the signal receiving port of the power supply unit through the signal output port; The power transmission port of the power supply unit is electrically connected to the power supply port of the control unit; after receiving the first wake-up signal, the power supply unit supplies power to the power supply end of the control unit through the power transmission port; The second communication port of the signal processing unit and the second communication port of the control unit are electrically connected to the signal isolation unit respectively; the control unit wakes up after being powered on, and sends a second wake-up signal to the second communication port of the signal processing unit through the second communication port; The signal isolation unit transmits and isolates the first wake-up signal and the second wake-up signal.

2. The battery management control module according to claim 1, characterized in that: The signal isolation unit comprises: a first isolation subunit, one end of which is electrically connected to the second communication port of the signal processing unit, and the other end of which is electrically connected to the second communication port of the control unit; The second isolation sub-unit has one end electrically connected to the signal output port of the signal processing unit and the other end electrically connected to the signal receiving port of the power supply unit.

3. The battery management control module according to claim 2, characterized in that: The first isolation subunit includes a four-channel digital isolator.

4. The battery management control module according to claim 2, characterized in that: The second isolation subunit includes an optocoupler isolator.

5. The battery management control module according to claim 1, characterized in that: The third communication port of the signal processing unit and the third communication port of the control unit are electrically connected to the signal isolation unit respectively.

6. The battery management control module according to claim 5, characterized in that: The signal isolation unit also includes: The third isolation subunit has one end electrically connected to the third communication port of the signal processing unit and the other end electrically connected to the third communication port of the control unit.

7. The battery management control module according to claim 6, characterized in that: The third isolation subunit includes a dual-channel digital isolator.

8. The battery management control module according to any one of claims 1 to 7, characterized in that: The first communication port of the control unit is electrically connected to the first communication port of the power supply unit.

9. A method for waking up a battery management module, characterized in that: include: The signal processing unit receives a wake-up instruction from an external control terminal through the first communication port, generates a first wake-up signal according to the wake-up instruction, and sends the first wake-up signal through the signal output port; The power supply unit receives the first wake-up signal through the signal receiving port, and wakes up the power supply unit according to the first wake-up signal to supply power to the control unit through the power supply end; The control unit wakes up after the power supply end is powered, and sends a second wake-up signal for waking up the signal processing unit to the second communication port of the signal processing unit through the second communication port.

10. The method for waking up a battery management module according to claim 9, characterized in that: Also includes: After the signal processing unit is awakened, the fourth communication port of the control unit sends a third awakening signal for awakening the cell sampling control module to the fourth communication port of the control unit in the cell sampling control module.

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