Battery cell data acquisition circuit, battery management system and electric equipment

Abstract

The utility model discloses a battery cell data acquisition circuit, a battery management system and electric equipment, and belongs to the technical field of battery cell data management, and the battery cell data acquisition circuit comprises a main control module which comprises a first Bluetooth unit; the acquisition module is configured to obtain battery cell data and send the battery cell data to the main control module through a data link; the acquisition module comprises a second Bluetooth unit, the second Bluetooth unit is connected with the first Bluetooth unit, the second Bluetooth unit is configured to transmit the cell data to the first Bluetooth unit, and the second Bluetooth unit and the first Bluetooth unit form a standby link. According to the circuit provided by the embodiment of the invention, the first Bluetooth unit and the second Bluetooth unit are additionally arranged in the main control module and the acquisition module, so that when the data link is interrupted, the first Bluetooth unit and the second Bluetooth unit are used for monitoring the battery cell data in real time, and the function of the battery can be continuously carried out.

Description

TECHNICAL FIELD

[0001] Embodiments of the present application relate to the technical field of battery data management, and in particular to a battery data acquisition circuit, a battery management system and a power consumption device. BACKGROUND

[0002] The battery management system is used to acquire parameter data of a battery cell and send the parameter data to a vehicle network or a system cloud platform. Generally, the battery management system has an acquisition side and a main control side. The acquisition side is used to acquire parameter data of a battery cell and send the parameter data to the main control side. The main control side collects the parameter data and sends the parameter data to the vehicle network or the system cloud platform. The acquisition side and the main control side are usually connected by a data line. When the data line is damaged, the parameter data of the battery cell will be missing, which results in that the parameter data of the battery cell cannot be monitored and shared in real time. CONTENT OF THE UTILITY MODEL

[0003] Embodiments of the present application aim to provide a battery data acquisition circuit, a battery management system and a power consumption device to solve the technical problem that the parameter data of a battery cell cannot be monitored in real time when the data line between the acquisition side and the main control side is damaged in the prior art.

[0004] To solve the above technical problem, embodiments of the present application disclose the following technical solutions:

[0005] In a first aspect, a battery data acquisition circuit is provided, comprising:

[0006] a main control module, the main control module comprising a first Bluetooth unit;

[0007] an acquisition module, the acquisition module being configured to acquire the battery data and send the battery data to the main control module through a data link;

[0008] the acquisition module comprising a second Bluetooth unit, the second Bluetooth unit being connected with the first Bluetooth unit, the second Bluetooth unit being configured to transmit the battery data to the first Bluetooth unit, and the second Bluetooth unit and the first Bluetooth unit forming a backup link.

[0009] In combination with the first aspect, the main control module further comprises a main control chip, the main control chip being connected with the first Bluetooth unit, and the main control chip being configured to receive the battery data transmitted by the data link or acquire the battery data received by the first Bluetooth unit.

[0010] In combination with the first aspect, the main control module further comprises a bridge chip, the bridge chip being connected with the main control chip.

[0011] In combination with the first aspect, the acquisition module further comprises a switch unit, and the switch unit is configured to control the on-off of the data link, and the second Bluetooth unit is connected with the switch unit.

[0012] In combination with the first aspect, the acquisition module further comprises an acquisition chip, the acquisition chip is connected with the battery cell to acquire the battery cell data, and the acquisition chip is connected with the bridge chip through the data link.

[0013] In combination with the first aspect, the acquisition chip is connected with the second Bluetooth unit, and the acquisition chip sends the battery cell data to the second Bluetooth unit.

[0014] In combination with the first aspect, the battery cell data comprises one or more of voltage, current, impedance, temperature and balancing information of the battery cell.

[0015] In combination with the first aspect, the data link comprises a daisy chain.

[0016] In the second aspect, a battery management system is provided, and the system comprises the battery cell data acquisition circuit according to any one of the first aspect.

[0017] In the third aspect, a power consumption device is provided, and the power consumption device comprises the battery cell data acquisition circuit according to any one of the first aspect, or the power consumption device comprises the battery management system according to the second aspect.

[0018] One of the above technical solutions has the following advantages or beneficial effects:

[0019] The embodiment of the present application provides a battery cell data acquisition circuit, which comprises a master control module, the master control module comprising a first Bluetooth unit; an acquisition module configured to acquire battery cell data and send the battery cell data to the master control module through a data link; the acquisition module comprising a second Bluetooth unit, the second Bluetooth unit being connected with the first Bluetooth unit, the second Bluetooth unit being configured to transmit the battery cell data to the first Bluetooth unit, and the second Bluetooth unit and the first Bluetooth unit forming a backup link. The circuit provided by the embodiment of the present application realizes real-time monitoring of the battery cell data by the first Bluetooth unit and the second Bluetooth unit when the data link is interrupted, and ensures that the function of the battery can continue. BRIEF DESCRIPTION OF DRAWINGS

[0020] The technical solutions and other beneficial effects of the present application will become apparent from the following detailed description of the specific embodiments of the present application in combination with the accompanying drawings.

[0021] Figure 1 The module connection schematic diagram of the battery cell data acquisition circuit provided by the embodiment of the present application is shown in the figure.

[0022] Figure 2 A module connection diagram of the battery cell data acquisition circuit provided for some embodiments of the application is shown in FIG. 1;

[0023] Figure 3 A circuit connection diagram of the acquisition module provided for embodiments of the application is shown in FIG. 2;

[0024] Figure 4 A circuit connection diagram of the master control module provided for embodiments of the application is shown in FIG. 3;

[0025] Figure 5 A step diagram of the battery cell data acquisition method provided for embodiments of the application is shown in FIG. 4;

[0026] Figure 6 A step diagram of the battery cell data acquisition method provided for embodiments of the application is shown in FIG. 5;

[0027] Figure 7 An initialization flowchart of the Bluetooth module provided for embodiments of the application is shown in FIG. 6;

[0028] Figure 8 An initialization flowchart of the acquisition chip provided for embodiments of the application is shown in FIG. 7. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the application will be described clearly and completely below with reference to the drawings in the embodiments of the application. In the description of the application, it should be understood that the terms "center", "vertical", "horizontal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the application and simplify the description, and do not indicate or imply that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the application. In addition, the terms "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0030] The specific embodiments of the application will be described below through examples:

[0031] As Figure 1As shown, the embodiment of the present application provides an electric core data acquisition circuit, which comprises a master control module, the master control module comprising a first Bluetooth unit; an acquisition module, the acquisition module being configured to acquire electric core data and send the electric core data to the master control module through a data link; the acquisition module comprising a switch unit and a second Bluetooth unit, the switch unit being configured to be connected with the data link, and the second Bluetooth unit being configured to be connected with the switch unit and the first Bluetooth unit respectively; in response to a disconnection instruction sent by the first Bluetooth unit, the second Bluetooth unit controls the switch unit to disconnect the connection between the acquisition module and the master control module; wherein the second Bluetooth unit is further configured to transmit the electric core data to the first Bluetooth unit when the switch unit is disconnected, and the second Bluetooth unit and the first Bluetooth unit form a backup link. Specifically, after acquiring the electric core data, the acquisition module usually sends it to the master control module through the data link, but due to the connection mode of the wiring harness, once the line is damaged, data loss will occur, resulting in that the electric core data cannot be monitored and shared in real time.

[0032] It can be understood that the embodiment of the present application adds the first Bluetooth unit in the master control module and adds the second Bluetooth unit and the switch unit in the acquisition module. Among them, the first Bluetooth unit and the second Bluetooth unit are wirelessly connected, so as to realize mutual transmission and sharing of data between them. The switch unit is used to connect the data link, and the switch unit is controlled by the second Bluetooth unit. When the switch unit is disconnected, the connection between the master control module and the acquisition module is disconnected, and when the switch unit is closed, the master control module and the acquisition module are connected. When the data link is damaged, the master control module can find the problem of the data link in time through the acquired electric core data. Therefore, the master control module sends a disconnection instruction to the second Bluetooth unit through the first Bluetooth unit, and the switch unit disconnects the data link after receiving the disconnection instruction. At this time, the acquisition module transmits the electric core data to the first Bluetooth unit through the second Bluetooth unit, so as to realize the sharing and real-time monitoring of the electric core data, ensure the continuation of the electric core data, and make the function of the battery continue.

[0033] As Figure 1 As shown in the embodiment of the present application, the master control module further comprises a master control chip, the master control chip being connected with the first Bluetooth unit, and the master control chip being configured to receive the electric core data transmitted by the data link or acquire the electric core data received by the first Bluetooth unit.

[0034] Specifically, the master control chip can also monitor the state, temperature, voltage and other parameters of the electric core to ensure the safety and normal operation of the electric core. The master control chip can process and analyze the electric core data, so as to provide other devices or platforms with information about the state, performance and other related information of the electric core for further processing or analysis. At the same time, the master control chip can also send instructions or control signals to the electric core to realize specific operations or functions.

[0035] It can be understood that the master control chip as the core of the whole system can realize the integration and coordination between various components, can control and coordinate the work between different modules, and ensure the stability and consistency of the system. The existence of the master control chip enables the whole system to work efficiently and cooperatively.

[0036] As shown in the embodiment of the present application, the master control module further comprises a bridge chip, the bridge chip is connected with the master control chip and the data link, and the bridge chip is configured to convert the battery data into a format suitable for the master control chip. Figure 1

[0037] Specifically, since the master control chip requires a specific data format for processing and analysis, and the interface between the acquisition module and the master control module is inconsistent, the battery data transmitted by the acquisition module through the data link cannot be directly input into the master control chip. By connecting the bridge chip on the data link, the battery data can be converted from the original format to the format required by the master control chip. In this way, the master control chip can directly use the converted data without additional processing or conversion steps.

[0038] It can be understood that the role of the bridge chip is to connect the master control chip and the data link, which can ensure the compatibility and interoperability between the master control chip and the data link. Through the bridge chip, the master control chip can communicate with different types of data links and receive data from different types of battery cells. This compatibility and interoperability make the system more flexible and scalable.

[0039] As shown in the embodiment of the present application, the acquisition module further comprises an acquisition chip, the acquisition chip is configured to be connected with the battery cell to acquire battery data, and the acquisition chip is connected with the bridge chip through the data link; the acquisition chip is further configured to be connected with the second Bluetooth unit, and the acquisition chip sends the battery data to the second Bluetooth unit. Figure 1

[0040] Specifically, the acquisition chip can read various parameters of the battery cell, such as voltage, current, impedance, temperature and balancing information, and transmit these data to the master control chip through the data link or the second Bluetooth unit for processing and analysis. Through the acquisition chip, the system can obtain the state and performance information of the battery cell in real time for monitoring and control. It is worth noting that the acquisition chip is connected with the bridge chip through the data link, and the battery data collected by the acquisition chip is converted into the corresponding format through the bridge chip and input into the master control chip, thereby realizing communication with the master control chip or other components.

[0041] ​​It is worth noting that the acquisition chip includes an AFE chip, which refers to an Analog Front-End chip, also known as an analog signal processing chip. The AFE chip is an integrated circuit chip used to receive, process and convert analog signals. The AFE chip is usually used to convert analog signals into digital signals so that the subsequent master chip can further process and analyze them.

[0042] In the embodiment of the present application, when the data link is damaged, the battery data cannot be effectively transmitted. The acquisition chip is connected with the second Bluetooth unit to send the battery data to the second Bluetooth unit, and then the second Bluetooth unit sends the battery data to the first Bluetooth unit. The master control chip obtains the battery data from the first Bluetooth unit, thereby realizing wireless communication between the acquisition module and the master control module.

[0043] It can be understood that the acquisition chip realizes the functions of data transmission and communication through the data link or the second Bluetooth unit. Through the second Bluetooth unit, the acquired battery data can be transmitted to the master control chip, avoiding the problem that data monitoring and sharing of the battery cannot be performed when the data link is broken or damaged.

[0044] As shown in Figure 2 In the embodiment of the present application, the acquisition module has a plurality of (such as Figure 2 acquisition module 1, acquisition module 2 to acquisition module n) in the acquisition module, each acquisition module includes an acquisition chip, a switch unit and a second Bluetooth unit, and the acquisition chip in each acquisition module is connected with the switch unit through a data link, and the second Bluetooth unit is connected with the switch unit and the acquisition chip. It is worth noting that all acquisition modules are connected in turn, wherein the acquisition chip in the first acquisition module of the adjacent two acquisition modules is connected with the switch unit in the second acquisition module through a data link, and the second Bluetooth unit in each acquisition module is wirelessly connected with the first Bluetooth unit.

[0045] It should be noted that in the embodiment of the present application, the data link includes a daisy chain. Specifically, the daisy chain is a topology structure connected in series, which can connect multiple devices or components together. This structure makes the data link have scalability and flexibility, and devices can be added or removed as needed to adapt to different system configurations and requirements. The existence of the daisy chain makes the data link scalable and adjustable according to actual conditions, providing greater flexibility and scalability. Each device in the daisy chain can receive and forward data. When data is transmitted from one device to the next device, each device in the daisy chain can process, analyze or forward data to other devices. This data transmission and forwarding capability enables the daisy chain to realize the flow and transmission of data in the link, ensuring smooth transmission and exchange of data.

[0046] AsFigure 3 As shown in the circuit connection diagram of the collection module provided by the embodiment of the application, the second Bluetooth chip with the model of BT / ESP32, the AFE chip with the model of MC33771 and the relay with the model of HFD4 are connected, wherein the VCC pins of the second Bluetooth chip, the AFE chip and the relay are used for connecting the working voltage, and the GND pins are used for grounding; the second Bluetooth chip is used for performing information interaction with the master control chip through the daisy chain with the collected information; in the AFE chip, the AFE1_RDTX_OUT_P pin and the AFE1_RDTX_OUT_N pin are used for cascading the AFE2 pin; the AFE1_CB1···.14 is an equalization control pin, the AFE1_CT0 is a battery reference pin, the AFE1_SI_RDTX_IN_P pin and the AFE1_CK_RDTX_IN_N pin are used for SPI time connection to the AFE1_SPI_MOSI pin and the AFE1_SPI_SCLK pin, and are used for TPL time connection to the AFE1_RDTX_IN_P pin and the AFE1_RDTX_IN_N pin. The AFE1_SPI_EN pin and the AFE1_RESET pin are connected to the second Bluetooth chip, the AFE1_SWT pin on the second Bluetooth chip is connected to the relay to realize the SPI and daisy chain communication switching and control circuit; the AFE1_SPI_MISO pin and the AFE1_SPI_CSB pin are connected to the second Bluetooth chip, the AFE1_SPI_SCLK pin and the AFE1_SPI_MOSI pin on the second Bluetooth chip are connected to the relay to realize the SPI communication; in the relay, the AFE1_RDTX_IN_P pin and the AFE1_RDTX_IN_N pin are connected to the MC33664 TPL_RDTX_P pin and the TPL_RDTX_N pin to realize the daisy chain communication. Specifically, the relay realizes the SPI and daisy chain communication circuit switching control to prevent the occurrence of the daisy chain virtual connection condition; the second Bluetooth chip realizes the Bluetooth communication and control, and once the daisy chain disconnection instruction of the master control chip is received, the daisy chain switching circuit function is immediately executed, the communication connection with the AFE chip is established by using the SPI, and the data information collection work is performed; the second Bluetooth chip switches the SPI communication through the SPI control circuit in the daisy chain disconnection condition, and converts the collected data into Bluetooth data for sharing.

[0047] As Figure 4The circuit connection schematic diagram of the master control module provided by the embodiment of the application is shown, including a first Bluetooth chip with a model of BT / ESP32, a bridge chip with a model of MC33664, a master control chip MCU and a CAN interface with a model of TJA1051, wherein the VCC pins on the first Bluetooth chip, the bridge chip and the master control chip MCU are all used for connecting working voltage, and the GND pins are all used for grounding; in the bridge chip, the TPL_RDTX_P pin and the TPL_RDTX_N pin are used for connecting the AFE1_RDTX_IN_P pin and the AFE1_RDTX_IN_N pin to realize daisy chain communication. The TPL_SPI_TX_SCLK pin, the TPL_SPI_TX_CSB pin, the TPL_SPI_TX_DATA pin, the TPL_EN pin, the TPL_SPI_RX_SCLK pin, the TPL_SPI_RX_CSB pin, the TPL_SPI_RX_DATA pin and the TPL_INTB pin are used for connecting the master control chip MCU; in the first Bluetooth chip, the BT_SPI_SCLK pin, the BT_SPI_MOSI pin, the BT_SPI_MISO pin and the BT_SPI_CSO pin are used for connecting the master control chip MCU; in the master control chip, the CAN_TXD pin and the CAN_RXD pin are used for connecting the CAN interface, and the CAN_H pin and the CAN_L pin on the CAN interface are used for external CAN network. Specifically, the bridge chip realizes daisy chain communication between the master control chip MCU and the AFE chip, and transmits the voltage, temperature and equalization information collected by the AFE chip to the master control chip MCU through the daisy chain; the CAN interface realizes CAN communication to transmit the information of the AFE chip to the vehicle network; the first Bluetooth chip realizes Bluetooth communication to transmit the information of the AFE chip in a wireless manner, and communicates with the second Bluetooth unit in the case of disconnection of the daisy chain to realize the function of the wireless AFE chip; the master control chip MCU realizes the software and hardware carrier of the entire BMS system. The first Bluetooth unit is connected with the master control chip through SPI, and once the software monitors that the daisy chain is disconnected, the second Bluetooth unit is immediately started to connect control, and at the same time, the fault is reported to the vehicle network.

[0048] As Figure 7As shown in the embodiment of this application, the address management process of the first Bluetooth unit and the second Bluetooth unit includes: firstly, performing Bluetooth initialization (i.e., initializing the first Bluetooth unit and the second Bluetooth unit), determining whether to switch SPI monitoring; if so, the second Bluetooth unit sends a wake-up command to wake up the AFE chip and enters address allocation: since each AFE chip is in a discrete state at this time, the location of the AFE chip cannot be determined. At this time, the address of the AFE chip is calculated by the MAC address of the second Bluetooth unit in the acquisition module, and the specific location of the AFE chip can be identified when the first Bluetooth unit communicates subsequently; then, acquiring cell data (including voltage, temperature, and equalization status), data packaging (including MAC address and cell data), and fault packaging (including MAC address and error type ERROR) are performed, and the data is sent to the first Bluetooth unit through the second Bluetooth unit, and finally ends; if the first Bluetooth unit determines whether to switch SPI monitoring after initialization and the result is no, or the AFE chip cannot be woken up, then directly enters fault packaging, and then the data is sent to the first Bluetooth unit through the second Bluetooth unit, and finally ends.

[0049] like Figure 8 As shown in the embodiment of this application, the control flow of the main control module includes: when the main control module is powered on, it first determines whether the AFE chip of the acquisition module can be woken up. If it can, then the address of the AFE chip is allocated (this address allocation is only allocated on the first power-on and does not need to be allocated again on subsequent power-ons). After the allocation is completed, it determines whether the AFE chip is faulty. If so, the control flow of the main control module ends. If the AFE chip cannot be woken up, or the AFE chip cannot be allocated an address, or the AFE chip does not have a communication failure, then the second Bluetooth unit in the acquisition module switches to SPI control, then the AFE chip is initialized, and finally the control flow of the main control module ends.

[0050] It is understood that the circuit provided in this application embodiment achieves wireless communication connection between the main control module and the acquisition module by adding a first Bluetooth unit and a second Bluetooth unit to the main control module and the acquisition module. When the data link communication is interrupted, the first Bluetooth unit and the second Bluetooth unit can be used to realize cell data sharing and real-time monitoring, ensuring the continued transmission of cell data and enabling the battery to continue to function.

[0051] like Figure 5 As shown in the embodiments of this application, a method for acquiring battery cell data is also provided, applied to the main control module in a battery cell data acquisition circuit as described above, the method comprising:

[0052] S1: Acquire cell data. The cell data is sent by the acquisition module via a data link. Specifically, after acquiring the cell data, the acquisition module sends it to the main control module via the data link.

[0053] S2: If it is confirmed that the battery cell data is missing, a disconnection instruction is sent to the second Bluetooth unit through the first Bluetooth unit, and the disconnection instruction is configured to disconnect the switch unit in the acquisition module.

[0054] Specifically, if it is confirmed that the battery cell data is missing, it indicates that the data link is damaged, resulting in incomplete data transmission. Therefore, the master control module generates a disconnection instruction and transmits the disconnection instruction to the first Bluetooth unit. The first Bluetooth unit transmits the disconnection instruction to the second Bluetooth unit in a wireless manner. The second Bluetooth unit controls the switch unit to disconnect after receiving the disconnection instruction.

[0055] S3: Obtain the battery cell data received by the first Bluetooth unit, which is sent by the second Bluetooth unit after the switch unit is disconnected; wherein the switch unit is configured to control the on-off of the data link.

[0056] Specifically, after the switch unit is disconnected, the damaged data link can be disconnected from the master control module, thereby avoiding the transmission of incorrect battery cell data by the damaged data link and avoiding interference with the battery cell data received by the second Bluetooth unit.

[0057] It can be understood that the method provided by the embodiments of the present application can send a disconnection instruction to control the switch unit to disconnect when the master control module confirms that the battery cell data sent by the acquisition module is missing, thereby disconnecting the data link between the master control module and the acquisition module and maintaining the transmission of the battery cell data by the second Bluetooth unit and the first Bluetooth unit, ensuring the continuation of the battery cell data and enabling the function of the battery to continue.

[0058] As shown in Figure 6 The embodiments of the present application also provide a battery cell data acquisition method applied to an acquisition module in the battery cell data acquisition circuit of any one of the above embodiments. The method comprises:

[0059] F1: Acquire battery cell data. Specifically, the acquisition module further comprises an acquisition chip configured to be connected with the battery cell to acquire the battery cell data.

[0060] F2: Send the battery cell data to the master control module through a data link. Specifically, the acquisition module sends the battery cell data to the master control module through the data link after acquiring the battery cell data.

[0061] F3: In response to the received disconnection instruction, control the switch unit to disconnect, and the switch unit is configured to control the on-off of the data link. Specifically, when the disconnection instruction issued by the master control module is received, it indicates that the data link connected to the acquisition module is damaged, resulting in incomplete data transmission. Therefore, the master control module generates a disconnection instruction and transmits the disconnection instruction to the first Bluetooth unit. The first Bluetooth unit transmits the disconnection instruction to the second Bluetooth unit in a wireless manner. The second Bluetooth unit controls the switch unit to disconnect after receiving the disconnection instruction.

[0062] F4: sending the battery cell data to the master module through the second Bluetooth unit; wherein the disconnection instruction is sent by the master module when it is confirmed that the battery cell data is missing. Specifically, if it is confirmed that the battery cell data is missing, it means that the data link is damaged, resulting in the data being unable to be transmitted completely. Therefore, the master module generates a disconnection instruction and transmits the disconnection instruction to the first Bluetooth unit, the first Bluetooth unit transmits the disconnection instruction to the second Bluetooth unit in a wireless manner, and the second Bluetooth unit controls the switch unit to disconnect after receiving the disconnection instruction.

[0063] It can be understood that the method provided by the embodiments of the present application can send a disconnection instruction to control the switch unit to disconnect when the master module confirms that the battery cell data sent by the acquisition module is missing, so as to disconnect the data link between the master module and the acquisition module, and maintain the transmission of the battery cell data through the second Bluetooth unit and the first Bluetooth unit, thereby ensuring the continuous transmission of the battery cell data and enabling the function of the battery to continue.

[0064] The embodiments of the present application also provide a battery management system, which comprises the battery cell data acquisition circuit according to any one of the above embodiments, or uses the battery cell data acquisition method according to any one of the above embodiments, or uses the battery cell data acquisition method according to any one of the above embodiments.

[0065] The above describes in detail the battery cell data acquisition circuit, the battery management system and the electric device provided by the embodiments of the present application. The principles and implementation manners of the present application are described by applying specific examples. The above description of the embodiments is only used to help understand the technical solutions of the present application and the core ideas thereof; those skilled in the art should understand that the technical solutions recorded in the above embodiments can be modified, or some technical features thereof can be replaced equivalently; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A cell data acquisition circuit, comprising: The system comprises the battery cell data acquisition circuit according to any one of claims 1-8. The system comprises the battery cell data acquisition circuit according to any one of claims 1-8. The system comprises the battery cell data acquisition circuit according to any one of claims 1-8. The system comprises the battery cell data acquisition circuit according to any one of claims 1-8.

2. The cell data acquisition circuit of claim 1, wherein, The system comprises the battery cell data acquisition circuit according to any one of claims 1-8.

3. The cell data acquisition circuit of claim 2, wherein, The system comprises the battery cell data acquisition circuit according to any one of claims 1-8.

4. The cell data acquisition circuit of claim 3, wherein, The system comprises the battery cell data acquisition circuit according to any one of claims 1-8.

5. The cell data acquisition circuit of claim 3, wherein, The system comprises the battery cell data acquisition circuit according to any one of claims 1-8.

6. The cell data acquisition circuit of claim 5, wherein, The system comprises the battery cell data acquisition circuit according to any one of claims 1-8.

7. The cell data acquisition circuit of claim 1, wherein, The system comprises the battery cell data acquisition circuit according to any one of claims 1-8.

8. The cell data acquisition circuit of claim 1, wherein, The system comprises the battery cell data acquisition circuit according to any one of claims 1-8.

9. A battery management system, characterized by, The system comprises the battery cell data acquisition circuit according to any one of claims 1-8.

10. An electric device, characterized by The system comprises the battery cell data acquisition circuit according to any one of claims 1-8. The system comprises the battery cell data acquisition circuit according to any one of claims 1-8. The system comprises the battery cell data acquisition circuit according to any one of claims 1-8. The system comprises the battery cell data acquisition circuit according to any one of claims 1-8. The system comprises the battery cell data acquisition circuit according to any one of claims 1-8. The system comprises the battery cell data acquisition circuit according to any one of claims 1-8. The system comprises the battery cell data acquisition circuit according to any one of claims 1-8. The system comprises the battery cell data acquisition circuit according to any one of claims 1-8. The system comprises the battery cell data acquisition circuit according to any one of claims 1-8. The system comprises the battery cell data acquisition circuit according to any one of claims 1-8. The system comprises the battery cell data acquisition circuit according to any one of claims 1-8. The system comprises the battery cell data acquisition circuit according to any one of claims 1-8. The system comprises the battery cell data acquisition circuit according to any one of claims 1-8. The system comprises the battery cell data acquisition circuit according to any one of claims 1-8. The system comprises the battery cell data acquisition circuit according to any one of claims 1-8. The system comprises the battery cell data acquisition circuit according to any one of claims 1-8. The system comprises the battery cell data acquisition circuit according to any one of claims 1-8. The system comprises the battery cell data acquisition circuit according to any one of claims 1-8. The system comprises the battery cell data acquisition circuit according to any one of claims 1-8. The system comprises the battery cell data acquisition circuit according to any one of claims 1-8. The system comprises the battery cell data acquisition circuit according to any one of claims 1-8. The system comprises the battery cell data acquisition circuit according to any one of claims 1-8. The system comprises the battery cell data acquisition circuit according to any one of claims 1-8. The system comprises the battery cell data acquisition circuit according to any one of claims 1-8. The system comprises the battery cell data acquisition circuit according to any one of claims 1-8. The system comprises the battery cell data acquisition circuit according to any one of claims 1-8. The system comprises the battery cell data acquisition circuit according to any one of claims 1-8. The system comprises the battery cell data acquisition circuit according to any one of claims 1-8. The system comprises the battery cell data acquisition circuit according to any one of claims 1-8. The system comprises the battery cell data acquisition circuit according to any one of claims 1-8. The system comprises the battery cell data acquisition circuit according to any one of claims 1-8. The system comprises the battery cell data acquisition circuit according to any one of claims 1-8. The system comprises the battery cell data acquisition circuit according to any one of claims 1-8. The system comprises the battery cell data acquisition circuit according to any one of claims 1-8. The system comprises the battery cell data acquisition circuit according to any one of claims 1-8. The system comprises the battery cell data acquisition circuit according to any one of claims 1-8. The system comprises the battery cell data acquisition circuit according to any one of claims 1-8. The system comprises the battery cell data acquisition circuit according

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