BMS battery management system

Abstract

The utility model provides a BMS (Battery Management System), which belongs to the technical field of battery management systems and comprises an MCU (Microprogrammed Control Unit) control module, a BMS battery pack module, a battery management module, a monitoring module, a communication module and a power supply and charging module, and the MCU control module exchanges data with external equipment to realize integration and control of the system. Compared with a conventional low-voltage battery pack, 24 single batteries are used as a module, a plurality of modules are connected to form a high-voltage battery pack, energy loss is effectively reduced, the overall efficiency of the battery pack and a motor is improved, remote control over a system is achieved through cooperation of the MCU control module and the communication module, and the battery pack is convenient to use. The BMS battery module is matched with the battery management module to monitor battery parameters in real time, corresponding measures are taken to prolong the service life of a battery pack, meanwhile, the power supply charging module is arranged to ensure the supply of a system power supply, the system is prevented from being shut down during power failure, and the overall normal operation is effectively ensured.

Description

Technical Field

[0001] This utility model relates to the field of battery management system technology, and more specifically, to a BMS battery management system. Background Technology

[0002] EVTOL is a new type of air transportation vehicle with advantages such as environmental protection and low noise, and has broad application prospects in the field of urban air transportation.

[0003] In existing technologies, the battery pack is one of the key components of an EVOTL (Electronic Vehicle Telecommunications Unit), providing power to the aircraft's motors and directly affecting its performance. However, most commercially available EVOTLs use low-voltage battery packs, which have low voltage during operation, thus requiring a large current to power the equipment. This large current can easily cause severe overheating of the wiring, resulting in significant energy loss. Therefore, inventing a battery management system (BMS) to solve these problems has become a pressing issue for those skilled in the art. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a BMS battery management system, which aims to solve the problem that most EVOTL products on the market use low-voltage battery packs, resulting in significant energy loss.

[0005] This utility model is implemented as follows:

[0006] This utility model provides a BMS battery management system, including an MCU control module, a BMS battery pack module, a battery management module, a communication module, and a power supply and charging module. The MCU control module exchanges data with external devices to achieve system integration and control.

[0007] Preferably, the MCU control module uses a GD32F427RGT6 microcontroller to control and communicate with multiple external devices and functional modules. The MCU control module sends the battery pack status information to the external devices and receives control commands from the battery pack.

[0008] Preferably, the BMS battery pack module assembles 24 batteries into a high-voltage battery pack, and the battery management module mainly monitors various parameters on a single battery pack. Each battery pack module is equipped with a battery management module.

[0009] Preferably, the battery management module is equipped with a thermistor for monitoring the battery temperature, and the battery pack management module includes an equalization module, which measures the voltage of each battery cell and equalizes the voltage between the cells.

[0010] Preferably, the communication module integrates the battery pack management and control system to achieve intelligent battery management, and the communication module has electrical isolation function to prevent interference signals from affecting the normal operation of the system.

[0011] Preferably, the power supply and charging module manages the charging of the battery pack, and the power supply and charging module includes a power conversion circuit for adjusting the power supply voltage of the module.

[0012] The beneficial effects of this utility model are:

[0013] Compared to conventional low-voltage battery packs, this type of battery pack uses 24 individual battery cells as a module, and multiple modules are connected to form a high-voltage battery pack, which effectively reduces energy loss and improves the efficiency of the battery pack and motor.

[0014] The BMS battery circuit module, in conjunction with the battery management module, can detect the voltage of one or more individual batteries, thereby preventing individual batteries from being overcharged or over-discharged. At the same time, it can transmit the collected voltage data to the MCU control module, which performs corresponding charging and discharging control on the battery pack based on the data. This allows for the measurement of the overall voltage and temperature of the battery pack and individual batteries, ensuring the safe and reliable operation of the battery and guaranteeing its lifespan.

[0015] The communication module uses an electrical isolation chip, which can transmit signals between different voltage domains while maintaining electrical isolation. Optocoupler and power isolation technologies ensure stable signal transmission and system safety. The power supply section uses a filter circuit to ensure stable input power and prevent power supply noise from interfering with communication signals. This module receives control commands from an external controller and transmits the commands to the MCU control module to realize remote control of the system.

[0016] The power supply and charging module mainly implements the functions of power supply to the MCU control module and battery charging management. When there is a 24V external power supply, the circuit provides 3.3V power to the MCU through a voltage regulator chip, and charges the battery in the MCU control module at the same time. When the external power supply is unavailable, the battery provides 5V power to the circuit to ensure the normal operation of the system and ensure that the status of the battery pack can be monitored in real time. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of a BMS battery management system module provided by an embodiment of the present invention;

[0019] Figure 2 This is a circuit diagram of the control module in a BMS battery management system provided by an embodiment of the present invention;

[0020] Figure 3 This is a circuit diagram of a battery module in a BMS battery management system provided by this utility model embodiment;

[0021] Figure 4 This is a circuit diagram of the equalization module in a BMS battery management system provided by an embodiment of the present invention;

[0022] Figure 5 This is a partial circuit diagram of the battery management module in a BMS battery management system provided by an embodiment of the present invention;

[0023] Figure 6 This is a partial circuit diagram of the communication module in a BMS battery management system provided by an embodiment of the present invention;

[0024] Figure 7 This is a partial circuit diagram of the power supply and charging module in a BMS battery management system provided by an embodiment of this utility model. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0026] Example, refer to Figures 1-7 A battery management system (BMS) includes an MCU control module, a BMS battery pack module, a battery management module, a monitoring module, a communication module, and a power supply and charging module. The MCU control module exchanges data with external devices to achieve system integration and control.

[0027] Furthermore, the MCU control module uses a GD32F427RGT6 microcontroller to control and communicate with multiple external devices and functional modules. The MCU control module sends battery pack status information to external devices and receives control commands from the battery pack. The BMS battery pack module assembles 24 batteries into a high-voltage battery pack. The battery management module primarily monitors various parameters on individual battery packs. Each battery pack module is equipped with a battery management module, which includes a thermistor for monitoring battery temperature. The battery management module includes an equalization module that measures and equalizes the voltage of individual battery cells. The communication module integrates battery pack management and the control system to achieve intelligent battery management. The communication module has electrical isolation to prevent interference signals from affecting the normal operation of the system. The power supply and charging module manages the charging of the battery pack and includes a power conversion circuit to regulate the module's power supply voltage.

[0028] It should be noted that, compared to conventional low-voltage battery packs, this system uses 24 individual battery cells as a module, with multiple modules connected to form a high-voltage battery pack. This effectively reduces energy loss and improves the efficiency of both the battery pack and the motor. To ensure stable operation and real-time monitoring of the battery pack, the BMS battery circuit module, in conjunction with the battery management module, can detect the voltage of one or more individual cells, preventing overcharging and over-discharging of individual cells. The collected voltage data can be transmitted to the MCU control module, which uses this data to perform corresponding charge and discharge control on the battery pack. This allows for the measurement of the overall battery pack voltage and temperature, as well as the voltage and temperature of individual cells, ensuring safe and reliable battery operation and extending battery life. Simultaneously, the battery management module can monitor the current data in the circuit in real time, measure the remaining SOC of individual cells online, and adjust the battery discharge current based on environmental factors. Temperature correction is applied to SOC prediction, providing a more accurate estimate of remaining battery capacity and reliable usage time under varying conditions. Protective measures are implemented to prevent overheating and damage in case of excessive current, further protecting the battery and extending its lifespan. The battery management module is equipped with a photoresistor that outputs different currents based on battery temperature, allowing for real-time temperature monitoring. This prevents excessively high or low temperatures from affecting performance. Monitoring by the battery management module can promptly detect temperature anomalies and implement corresponding heat dissipation or heating measures to ensure the battery operates within a suitable temperature range, preventing prolonged operation in harsh environments that could reduce battery lifespan. The equalization module's circuitry connects to the pins of individual battery cells to measure the voltage of each cell and performs equalization operations when necessary, ensuring consistent voltage across all cells and preventing overcharging and over-discharging of individual cells.

[0029] The communication module uses an electrical isolation chip, which can transmit signals between different voltage domains while maintaining electrical isolation. Optocoupler and power isolation technologies ensure stable signal transmission and system safety. The power supply section uses a filter circuit to ensure stable input power and prevent power supply noise from interfering with communication signals. This module receives control commands from an external controller and transmits the commands to the MCU control module to realize remote control of the system.

[0030] The power supply and charging module mainly implements the functions of power supply to the MCU control module and battery charging management. When there is a 24V external power supply, the circuit provides 3.3V power to the MCU through a voltage regulator chip, and charges the battery in the MCU control module at the same time. When the external power supply is unavailable, the battery provides 5V power to the circuit to ensure the normal operation of the system and ensure that the status of the battery pack can be monitored in real time.

[0031] The working principle of this BMS battery management system is as follows: Compared with conventional low-voltage battery packs, it uses 24 battery cells as a module, and multiple modules are connected to form a high-voltage battery pack, which effectively reduces energy loss and improves the overall efficiency of the battery pack and motor. The MCU control module and communication module enable remote control of the system, and the BMS battery module and battery management module enable real-time monitoring of battery parameters and take corresponding measures to improve the service life of the battery pack. At the same time, the setting of the power supply and charging module ensures the power supply of the system and avoids system shutdown during power failure, effectively ensuring the normal operation of the whole system.

[0032] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A battery management system (BMS), comprising an MCU control module, a BMS battery pack module, a battery management module, a communication module, and a power supply and charging module, characterized in that, The MCU control module exchanges data with external devices to achieve system integration and control.

2. The BMS battery management system according to claim 1, characterized in that, The MCU control module uses a GD32F427RGT6 microcontroller to control and communicate with multiple external devices and functional modules. The MCU control module sends the battery pack status information to the external devices and receives control commands from the battery pack.

3. The BMS battery management system according to claim 2, characterized in that, The BMS battery pack module assembles 24 batteries into a high-voltage battery pack, and each battery pack module is equipped with a battery pack management module.

4. A BMS battery management system according to claim 3, characterized in that, The battery management module is equipped with a thermistor for monitoring the battery temperature. The battery pack management module includes an equalization module that measures the voltage of individual battery cells and equalizes the voltage between the cells.

5. A BMS battery management system according to claim 4, characterized in that, The communication module integrates the battery pack management and control system to achieve intelligent battery management. The communication module has electrical isolation function to prevent interference signals from affecting the normal operation of the system.

6. A BMS battery management system according to claim 5, characterized in that, The power supply and charging module manages the charging of the battery pack, and includes a power conversion circuit for adjusting the power supply voltage of the module.

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