A lithium ion battery based on a bms power management system

Abstract

The application provides a lithium ion battery based on a BMS power management system and relates to the technical field of lithium ion batteries. The BMS power management system comprises a main control module, a lithium ion battery pack module, a total current data acquisition module, a cloud big data processing module, an operation state analysis unit, a system instruction execution module and a signal rechecking unit. The main control module is electrically connected with the lithium ion battery pack module. The output end of the lithium ion battery pack module is electrically connected with the input end of the total current data acquisition module and a multi-source data information integration unit. By arranging a single-core current monitoring unit in the lithium ion battery pack module, the current of a single battery pack in the battery pack module can be detected independently. By additionally arranging a total current data acquisition module, the capacity of double-line wiring in a main line and a secondary line mode is provided. When the main line current monitoring unit fails, normal current monitoring function can be provided, and the fault tolerance of the whole battery system operation is improved.

Description

Technical Field

[0001] This invention relates to the field of lithium-ion battery technology, specifically to a lithium-ion battery based on a BMS power management system. Background Technology

[0002] Battery Management System (BMS) is a system that provides comprehensive and efficient management of batteries. It can monitor battery status in real time, manage on-board power batteries, enhance battery efficiency, prevent overcharging and over-discharging, and extend battery life. It mainly consists of multiple hardware and software components, including sensors, a central processing unit (CPU), and execution modules. Sensors distributed throughout the battery pack can acquire cell status information and transmit this information to the CPU. The CPU processes the data and feeds back information to the execution mechanisms for further processing. This process adjusts the battery status to maintain a suitable and safe operating environment, meeting the vehicle's power requirements. It also has functions such as leakage detection, thermal management, battery equalization management, alarm reminders, calculation of remaining capacity and discharge power, and reporting of battery degradation and remaining capacity status.

[0003] The core function of a Battery Management System (BMS) is to collect data such as voltage, temperature, current, and resistance of the power battery system, analyze the data status and battery operating environment, and monitor and control the charging, discharging, and operation of the battery system. As new energy vehicles place increasing demands on improved driving range and easier maintenance of lithium-ion batteries, conventional lithium battery packs are gradually developing towards a modular approach with multiple interconnected modules. However, in practical applications, traditional BMS battery management systems mainly monitor and manage battery packs using a single-wire connection. When a problem occurs in a single cell within the entire lithium battery pack, it can easily lead to poor monitoring accuracy and even misdiagnosis of faults. For a lithium battery pack composed of multiple individual cells, there are certain shortcomings in the fine-grained control. Furthermore, in actual operation, if a single battery pack fails, it may synchronously affect adjacent battery packs and cause some heat generation issues. Summary of the Invention

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this invention provides a lithium-ion battery based on a BMS power management system, which solves the problem of poor accuracy in monitoring and controlling various data of a lithium battery pack composed of multiple individual cells. It also solves the problem of potential cascading effects on adjacent cells when a single cell fails, as well as the heat generation problem caused by the superposition of multiple cells.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, the present invention provides the following technical solution: a BMS power management system, comprising a main control module, a lithium-ion battery pack module, a total current data acquisition module, a cloud-based big data processing module, an operation status analysis unit, a system instruction execution module, and a signal verification unit. The main control module is electrically connected to the lithium-ion battery pack module. The output terminal of the lithium-ion battery pack module is electrically connected to the input terminals of the total current data acquisition module and the multi-source data information integration unit, respectively. The multi-source data information integration unit is connected to the cloud-based big data processing module via a network. The multi-source data information integration unit is electrically connected to the operation status analysis unit. The operation status analysis unit is electrically connected to the system instruction execution module. The system instruction execution module is electrically connected to the signal verification unit.

[0008] The total current data acquisition module includes a main line current monitoring unit, a secondary line current monitoring unit, and a current data comparison unit. The main line current monitoring unit is used to acquire the total operating current data of the lithium-ion battery pack module. The secondary line current monitoring unit is a backup monitoring line that can provide normal current monitoring function when the main line current monitoring unit fails. The current data comparison unit can compare and analyze the single cell current and the total current in the lithium-ion battery pack module to calculate the difference.

[0009] Preferably, the main control module includes an in-vehicle display unit, a data change recording unit, and a data storage terminal. The in-vehicle display unit is used to convert battery data information to the vehicle screen. The data change recording unit is used to store data change information during battery operation, including information on output variables and input variables. The data storage terminal serves as a data storage device for storing battery operating status data. The data sending terminal is electrically connected to the data connector in the lithium-ion battery pack module.

[0010] Preferably, the battery status monitoring module includes a single-cell voltage monitoring unit, a single-cell current acquisition unit, an insulation resistance acquisition unit, and an operating temperature monitoring unit. The single-cell voltage monitoring unit can detect the voltage of a single lithium-ion battery in the lithium-ion battery pack and obtain its operating data. The single-cell current acquisition unit is used to detect the current data of a single lithium-ion battery. The insulation resistance acquisition unit is used to obtain the insulation resistance data of a single lithium-ion battery to obtain the minimum resistance for the lithium-ion battery's electric shock protection. The operating temperature monitoring unit is used to obtain the battery operating temperature in multiple areas of the lithium-ion battery pack.

[0011] Preferably, the system instruction execution module includes a relay terminal and a battery status early warning unit. The relay terminal includes a motor controller and a current regulator. The motor controller is used to control the operation of the drive motor of the new energy vehicle, and the current regulator is used to control the value of the current. The battery status early warning unit includes a network connection terminal and a vehicle alarm. The network connection terminal can transmit battery status data to an external data center, and the vehicle alarm is used to send alarm information to the main control module.

[0012] Preferably, the total current data acquisition module is connected to the cloud big data processing module through a multi-source data information integration unit. The multi-source data information integration unit is used to integrate the operating data of the lithium-ion battery pack module and the data of the total current data acquisition module, and send them to the cloud big data processing module and the operation status analysis unit in multiple time periods. The cloud big data processing module includes an information collection terminal, a historical data change calculation unit and a network connector. The information collection terminal is used to receive data information from the multi-source data information integration unit. The historical data change calculation unit can compare and calculate the operating data of the lithium-ion battery pack module in different time periods to obtain the health status value of the lithium-ion battery pack.

[0013] Preferably, the operation status analysis unit is used to analyze and calculate the operation data of the lithium-ion battery pack module to determine the current health data of the lithium-ion battery pack module, including voltage, capacity, and current stability.

[0014] Preferably, the signal verification unit is electrically connected to the main control module, and the signal verification unit is used to perform secondary verification on the execution signal sent by the system instruction execution module to ensure the timeliness of the execution signal.

[0015] Preferably, the lithium-ion battery pack module includes a lithium-ion battery, a heat dissipation protection unit, a data connector, and a battery status monitoring module. The lithium-ion battery is composed of multiple lithium-ion battery panels. The heat dissipation protection unit is used to dissipate heat from the lithium-ion battery. The data connector is used to collect and transmit battery operating data.

[0016] A lithium-ion battery based on a BMS power management system, using the aforementioned BMS power management system, includes a housing, a connection box fixedly connected to the front end of the housing, a docking plate fixedly connected to the front end of the connection box, connectors provided at both ends of the docking plate, a battery status monitor fixedly connected inside the connection box, a current controller connected to the rear of the battery status monitor, and a tail shell fixedly connected to the rear end of the housing, with through slots provided on both the upper and lower sides of the tail shell.

[0017] Preferably, a cross-flow fan is installed inside the through slot, a tail plate is fixedly connected to the rear end of the tail shell, several heat-spreading partition plates are evenly distributed inside the outer shell, a lithium-ion battery pack is arranged between the heat-spreading partition plates, a heat dissipation fin is fixedly connected to the rear end of the inner shell, several heat pipes are equidistantly connected to both sides of the heat dissipation fin, and the two ends of the heat pipes are connected to the heat-spreading partition plates.

[0018] Working Principle: This invention provides a lithium-ion battery based on a BMS power management system. During actual operation, multiple battery packs can be connected via a docking plate, or the battery can operate as a single pack. The entire lithium battery is primarily composed of an outer casing, which protects the battery pack. Several lithium-ion battery packs are evenly distributed inside, each consisting of multiple individual lithium-ion batteries mounted between multiple heat-spreading partitions. During operation, the heat-spreading partitions absorb heat from the battery packs, which is then conducted to the heat dissipation fins via heat pipes. A direct-flow fan at the top and bottom of the tail casing creates a cooling airflow channel, carrying away heat from the heat dissipation fins. This provides active cooling for the multiple lithium-ion battery packs, reducing heat generation and extending their lifespan. A battery status monitor and current controller are installed inside the connection box. These monitors and controllers are equipped with multiple devices for acquiring operational information from the lithium-ion battery packs and controlling the current. Furthermore, in this invention, the lithium-ion battery... This system requires the use of a BMS (Battery Management System) for activation. By setting up a single-cell current monitoring unit within the lithium-ion battery pack module, independent current detection of each individual battery cell within the module is possible, resulting in more accurate data. Additionally, an extra total current data acquisition module provides dual-path connectivity via main and auxiliary lines, ensuring continued current monitoring even if the main line current monitoring unit fails. A current data comparison unit compares and analyzes the single-cell current with the total current within the lithium-ion battery pack module to calculate the difference. Insulation resistance acquisition and operating temperature monitoring units acquire insulation resistance data for individual lithium-ion batteries, determining the minimum resistance required for electric shock protection. Within this system, a cloud-based big data processing module receives data from a multi-source data integration unit. A historical data change calculation unit compares and calculates the operating data of the lithium-ion battery pack module across different time periods, obtaining and recording the battery pack's health status to assess its expected lifespan.

[0019] (III) Beneficial Effects

[0020] This invention provides a lithium-ion battery based on a BMS power management system. It has the following advantages:

[0021] 1. This invention, by setting a single-cell current monitoring unit in the lithium-ion battery pack module, enables independent current detection of individual battery cells within the module, resulting in more accurate detection data. Simultaneously, by adding an additional total current data acquisition module, providing dual-path wiring capabilities via main and auxiliary lines, it can maintain normal current monitoring functionality even when the main line current monitoring unit fails, improving the fault tolerance of the entire battery system. Furthermore, the current data comparison unit can compare and analyze the single-cell current with the total current in the lithium-ion battery pack module to calculate the difference, facilitating data analysis in the background. By setting up an insulation resistance acquisition unit and an operating temperature monitoring unit, the insulation resistance data of individual lithium-ion batteries can be obtained, along with the minimum resistance for lithium-ion battery electric shock protection and battery temperature information.

[0022] 2. By setting up a cloud-based big data processing module, this invention can receive data information from a multi-source data information integration unit. The historical data change calculation unit can compare and calculate the operating data of the lithium-ion battery pack module in different time periods to obtain the health status value of the lithium-ion battery pack, and record and analyze it to accurately assess the expected service life of the lithium-ion battery pack, while also ensuring the operational safety and effectiveness of new energy lithium-ion batteries.

[0023] 3. This invention uses multiple heat-spreading partitions to house lithium-ion batteries, which are then combined with heat pipes and cooling fins. During operation, the heat-spreading partitions absorb heat from the lithium-ion battery pack, which is then conducted to the cooling fins via heat pipes. Subsequently, cross-flow fans located at the top and bottom of the tail shell create a direct current cooling airflow, carrying away the heat from the cooling fins. This provides active cooling for multiple lithium-ion battery packs, reducing the heat generation intensity and extending their lifespan. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the system architecture of the present invention;

[0025] Figure 2 This is a schematic diagram of the main control module architecture of the present invention;

[0026] Figure 3 This is a schematic diagram of the lithium-ion battery pack module architecture of the present invention;

[0027] Figure 4 This is a schematic diagram of the total current data acquisition module architecture of the present invention;

[0028] Figure 5 This is a schematic diagram of the system instruction execution module architecture of the present invention;

[0029] Figure 6 This is a schematic diagram of the cloud-based big data processing module architecture of the present invention;

[0030] Figure 7 This is a perspective view of the lithium-ion battery of the present invention;

[0031] Figure 8 This is a schematic diagram of the internal structure of the connector box of the lithium-ion battery of the present invention;

[0032] Figure 9 This is an exploded view of the lithium-ion battery structure of the present invention;

[0033] Figure 10 This is a rear-view top view of the lithium-ion battery of the present invention.

[0034] The components include: 1. Outer shell; 2. Connector box; 3. Docking plate; 4. Connector head; 5. Battery status monitor; 6. Current controller; 7. Tail shell; 8. Through slot; 9. Cross-flow fan; 10. Tail plate; 11. Heat dissipation partition plate; 12. Lithium-ion battery pack; 13. Heat pipe; 14. Heat dissipation fins. Detailed Implementation

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] Example:

[0037] like Figure 1 As shown, this embodiment of the invention provides a BMS power management system, including a main control module, a lithium-ion battery pack module, a total current data acquisition module, a cloud big data processing module, an operation status analysis unit, a system instruction execution module, and a signal verification unit. The main control module is electrically connected to the lithium-ion battery pack module. The output terminal of the lithium-ion battery pack module is electrically connected to the input terminal of the total current data acquisition module and the multi-source data information integration unit, respectively. The multi-source data information integration unit is connected to the cloud big data processing module via a network. The multi-source data information integration unit is electrically connected to the operation status analysis unit. The operation status analysis unit is electrically connected to the system instruction execution module. The system instruction execution module is electrically connected to the signal verification unit.

[0038] refer to Figure 4As shown, the total current data acquisition module includes a main line current monitoring unit, a secondary line current monitoring unit, and a current data comparison unit. The main line current monitoring unit is used to acquire the total operating current data of the lithium-ion battery pack module. The secondary line current monitoring unit is a backup monitoring line that can provide normal current monitoring function when the main line current monitoring unit fails. The current data comparison unit can compare and analyze the single cell current and the total current in the lithium-ion battery pack module to calculate the difference.

[0039] By setting a single-cell current monitoring unit in the lithium-ion battery pack module, the current of each individual battery pack inside the battery pack module can be detected independently, and the monitoring data is more accurate. At the same time, by setting an additional total current data acquisition module, which provides dual-path wiring capability in the form of main line and auxiliary line, normal current monitoring function can be provided when the main line current monitoring unit fails, thereby improving the fault tolerance of the entire battery system operation.

[0040] The current data comparison unit can compare and analyze the single-cell current and the total current in the lithium-ion battery pack module to calculate the difference, which facilitates data analysis in the background. By setting up the insulation resistance acquisition unit and the operating temperature monitoring unit, the insulation resistance data of a single lithium-ion battery can be obtained, as well as the minimum resistance for lithium-ion battery electric shock protection and the battery temperature information.

[0041] refer to Figure 2 As shown, the main control module includes an in-vehicle display unit, a data change recording unit, and a data storage terminal. The in-vehicle display unit is used to convert battery data information to the vehicle screen. The data change recording unit is used to store data change information during battery operation, including information on output variables and input variables. The data storage terminal serves as a data storage device and is used to store battery operating status data. The data sending terminal is electrically connected to the data connector in the lithium-ion battery pack module.

[0042] refer to Figure 3As shown, the battery status monitoring module includes a single-cell voltage monitoring unit, a single-cell current acquisition unit, an insulation resistance acquisition unit, and an operating temperature monitoring unit. The single-cell voltage monitoring unit can detect the voltage of a single lithium-ion battery in the lithium-ion battery pack and obtain its operating data. The single-cell current acquisition unit is used to detect the current data of a single lithium-ion battery. The insulation resistance acquisition unit is used to obtain the insulation resistance data of a single lithium-ion battery. In this embodiment, the insulation resistance data is mainly collected through a dual-bridge detection method. A relay is added to both the positive and negative ends of the lithium-ion battery pack, which can reduce the sampling multiple at both ends and calculate an accurate value to obtain the minimum resistance for the lithium-ion battery's electric shock protection. The operating temperature monitoring unit is used to obtain the battery operating temperature in multiple areas of the lithium-ion battery pack. In this system, by accurately obtaining the current of the lithium-ion battery, it can play a role in the calculation of SOC and battery balancing strategy.

[0043] refer to Figure 5 As shown, the system instruction execution module includes a relay terminal and a battery status warning unit. The relay terminal includes a motor controller and a current regulator. The motor controller is used to control the operation of the drive motor of the new energy vehicle, and the current regulator is used to control the current value. The battery status warning unit includes a network connection terminal and an on-board alarm. The network connection terminal can transmit battery status data to an external data center, and the on-board alarm is used to send alarm information to the main control module. It can send alarm information when there is a problem with battery operation.

[0044] refer to Figure 4 As shown, the total current data acquisition module is connected to the cloud big data processing module through a multi-source data information integration unit. The multi-source data information integration unit integrates the operating data of the lithium-ion battery pack module and the data of the total current data acquisition module, and sends them to the cloud big data processing module and the operation status analysis unit in multiple time periods. The cloud big data processing module includes an information collection terminal, a historical data change calculation unit, and a network connector. The information collection terminal receives data from the multi-source data information integration unit. The historical data change calculation unit can compare and calculate the operating data of the lithium-ion battery pack module in different time periods to obtain the health status value of the lithium-ion battery pack, and record and analyze it to accurately assess the expected service life of the lithium-ion battery pack, while also ensuring the operational safety and effectiveness of the new energy lithium-ion battery.

[0045] refer to Figure 1 As shown, the operation status analysis unit is used to analyze and calculate the operation data of the lithium-ion battery pack module, and determine the current health data of the lithium-ion battery pack module, including voltage, capacity, and current stability. The signal verification unit is electrically connected to the main control module. The signal verification unit is used to perform secondary verification on the execution signals sent by the system instruction execution module to ensure the timeliness of the execution signals.

[0046] refer to Figure 3 As shown, the lithium-ion battery pack module includes a lithium-ion battery, a heat dissipation protection unit, a data connector, and a battery status monitoring module. The lithium-ion battery is composed of multiple lithium-ion battery panels. The heat dissipation protection unit is used to dissipate heat from the lithium-ion battery, and the data connector is used to collect and transmit battery operating data.

[0047] refer to Figure 7-10 As shown, in this embodiment, a lithium-ion battery based on a BMS power management system is also provided. The BMS power management system provided in this embodiment includes a housing 1, a connection box 2 fixedly connected to the front end of the housing 1, a docking plate 3 fixedly connected to the front end of the connection box 2, and connectors 4 provided at both ends of the docking plate 3. A battery status monitor 5 is fixedly connected inside the connection box 2, and a current controller 6 is connected to the rear of the battery status monitor 5. A tail shell 7 is fixedly connected to the rear end of the housing 1. Through slots 8 are provided on both the upper and lower sides of the tail shell 7. A cross-flow fan 9 is provided inside the through slots 8. A tail plate 10 is fixedly connected to the rear end of the tail shell 7. Several heat dissipation partition plates 11 are evenly distributed inside the housing 1. A lithium-ion battery pack 12 is arranged between the heat dissipation partition plates 11. A heat dissipation fin 14 is fixedly connected to the rear end of the housing 1. Several heat pipes 13 are equidistantly connected to both sides of the heat dissipation fin 14. The two ends of the heat pipes 13 are connected to the heat dissipation partition plates 11.

[0048] In actual operation, the lithium-ion battery based on the BMS power management system can be connected in multiple groups via the docking plate 3, or it can operate as a single group. The entire lithium battery is mainly composed of the outer shell 1, which serves to protect the lithium battery pack. Inside the shell 1, several lithium-ion battery packs 12 are evenly distributed. Each lithium-ion battery pack 12 is composed of multiple single lithium-ion batteries and is installed between multiple heat-spreading partitions 11. When the lithium-ion battery pack 12 is operating, the heat-spreading partitions 11 can absorb the heat of the lithium-ion battery pack 12, which is then dissipated through the heat pipe 1. 3. Heat is conducted to the heat dissipation fins 14, and then through the cross-flow fans 9 set at the top and bottom of the tail shell 7, a heat dissipation channel can be formed in a DC manner to carry away the heat on the heat dissipation fins 14, thereby providing active heat dissipation capability for multiple lithium-ion battery packs 12, reducing the heat intensity of the lithium-ion battery packs 12, and extending the service life of the lithium-ion battery packs 12. A battery status monitor 5 and a current controller 6 are set inside the connection box 2. The battery status monitor 5 and the current controller 6 are equipped with multiple devices for acquiring the operating information of the lithium-ion battery packs 12 and performing current control.

[0049] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A BMS power management system, comprising a main control module, a lithium-ion battery pack module, a total current data acquisition module, a cloud-based big data processing module, an operation status analysis unit, a system instruction execution module, and a signal verification unit, characterized in that: The main control module is electrically connected to the lithium-ion battery pack module. The output terminal of the lithium-ion battery pack module is electrically connected to the input terminal of the total current data acquisition module and the multi-source data information integration unit, respectively. The multi-source data information integration unit is connected to the cloud big data processing module through the network. The multi-source data information integration unit is electrically connected to the operation status analysis unit. The operation status analysis unit is electrically connected to the system instruction execution module. The system instruction execution module is electrically connected to the signal re-examination unit. The total current data acquisition module includes a main line current monitoring unit, a secondary line current monitoring unit, and a current data comparison unit. The main line current monitoring unit is used to acquire the total operating current data of the lithium-ion battery pack module. The secondary line current monitoring unit is a backup monitoring line that can provide normal current monitoring function when the main line current monitoring unit fails. The current data comparison unit can compare and analyze the single cell current and the total current in the lithium-ion battery pack module to calculate the difference. The lithium-ion battery pack module includes a lithium-ion battery, a heat dissipation protection unit, a data connector, and a battery status monitoring module. The lithium-ion battery is composed of multiple lithium-ion battery plates. The heat dissipation protection unit is used to dissipate heat from the lithium-ion battery. The data connector is used to collect and transmit battery operating data. The battery status monitoring module includes a single-cell voltage monitoring unit, a single-cell current acquisition unit, an insulation resistance acquisition unit, and an operating temperature monitoring unit. The single-cell voltage monitoring unit can detect the voltage of a single lithium-ion battery in the lithium-ion battery pack and obtain its operating data. The single-cell current acquisition unit is used to detect the current data of a single lithium-ion battery. The insulation resistance acquisition unit is used to obtain the insulation resistance data of a single lithium-ion battery to obtain the minimum resistance for the lithium-ion battery's electric shock protection. The operating temperature monitoring unit is used to obtain the battery operating temperature in multiple areas of the lithium-ion battery pack. The total current data acquisition module is connected to the cloud big data processing module through a multi-source data information integration unit. The multi-source data information integration unit is used to integrate the operating data of the lithium-ion battery pack module and the data of the total current data acquisition module, and send them to the cloud big data processing module and the operation status analysis unit in multiple time periods. The cloud big data processing module includes an information collection terminal, a historical data change calculation unit and a network connector. The information collection terminal is used to receive data information from the multi-source data information integration unit. The historical data change calculation unit can compare and calculate the operating data of the lithium-ion battery pack module in different time periods to obtain the health status value of the lithium-ion battery pack. The signal verification unit is electrically connected to the main control module. The signal verification unit is used to perform secondary verification on the execution signals sent by the system instruction execution module to ensure the timeliness of the execution signals.

2. The BMS power management system according to claim 1, characterized in that: The main control module includes an in-vehicle display unit, a data change recording unit, and a data storage terminal. The in-vehicle display unit is used to convert battery data information to the vehicle screen. The data change recording unit is used to store data change information during battery operation, including information on output variables and input variables. The data storage terminal serves as a data storage device and is used to store battery operating status data. The data sending terminal is electrically connected to the data connector in the lithium-ion battery pack module.

3. The BMS power management system according to claim 1, characterized in that: The system instruction execution module includes a relay terminal and a battery status early warning unit. The relay terminal includes a motor controller and a current regulator. The motor controller is used to control the operation of the drive motor of the new energy vehicle, and the current regulator is used to control the current value. The battery status early warning unit includes a network connection terminal and an on-board alarm. The network connection terminal can transmit battery status data to an external data center, and the on-board alarm is used to send alarm information to the main control module.

4. A BMS power management system according to claim 1, characterized in that: The operation status analysis unit is used to analyze and calculate the operation data of the lithium-ion battery pack module to determine the current health data of the lithium-ion battery pack module, including voltage, capacity, and current stability.

5. A lithium-ion battery based on a BMS power management system, characterized in that: A BMS power management system according to any one of claims 1-4 includes an outer casing (1), a connection box (2) fixedly connected to the front end of the outer casing (1), a docking plate (3) fixedly connected to the front end of the connection box (2), a connector (4) provided at both ends of the docking plate (3), a battery status monitor (5) fixedly connected inside the connection box (2), a current controller (6) connected to the rear of the battery status monitor (5), and a tail shell (7) fixedly connected to the rear end of the outer casing (1), with through slots (8) provided on both the upper and lower sides of the tail shell (7).

6. A lithium-ion battery based on a BMS power management system according to claim 5, characterized in that: A cross-flow fan (9) is installed inside the through slot (8). A tail plate (10) is fixedly connected to the rear end of the tail shell (7). Several heat-spreading partition plates (11) are evenly distributed inside the outer shell (1). A lithium-ion battery pack (12) is arranged between the heat-spreading partition plates (11). A heat dissipation fin (14) is fixedly connected to the rear end of the inner shell (1). Several heat pipes (13) are equidistantly connected to both sides of the heat dissipation fin (14). The two ends of the heat pipes (13) are connected to the heat-spreading partition plates (11).

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