CN218272624U - Monitoring device for battery management system - Google Patents

Abstract

The utility model provides a monitoring device for a battery management system. The monitoring device is detachably connected to the battery management system. The monitoring device includes a main controller, a display device connected to the main controller and several types of bus interfaces; The main controller establishes a communication connection with the battery management system through the bus interface; the main controller receives the battery parameters transmitted by the battery management system through the bus interface, and drives the display device based on the battery parameters to monitor and display the battery status in the battery management system. The utility model designs a portable and detachable monitoring device for the battery management system. The monitoring device exists independently and is a separate device used in conjunction with the battery management system, which realizes the monitoring of the battery management system and timely Acquire the battery parameters of the battery pack in the battery management system and intuitively display the battery parameters, so as to realize the real-time monitoring of the battery management system.

Description

Monitoring device for battery management system

technical field

The utility model relates to the technical field of battery management, in particular to a monitoring device for a battery management system.

Background technique

Conventional BMS (Battery Management System, battery management system) needs to allow users or developers to obtain the battery parameters of the battery pack in the battery management system that they need to know and use, so as to correct the current battery status and mode. Judgment, to facilitate subsequent standardization of the battery.

For BMS, the battery parameters can be opened to other controllers through point-to-point communication of the communication protocol, so that the controller can obtain various real-time values of the battery. The existing circuit modules capable of monitoring battery parameters are all integrated in the battery management system. The circuit modules can obtain the battery parameters of the battery pack in the battery management system in time by connecting with the relevant data pins on the battery protection board. However, such a circuit module integrated in the battery management system will cause a considerable space burden and energy loss to the battery pack.

Utility model content

The technical problem to be solved by the utility model is to overcome the defects in the prior art that the monitoring process of the battery parameters will cause a lot of space burden and energy loss to the battery pack, and the battery parameters cannot be intuitively displayed to the user, and provide a A monitoring device for a battery management system.

The utility model solves the problems of the technologies described above through the following technical solutions:

The utility model provides a monitoring device for a battery management system, the monitoring device is detachably connected to the battery management system, the monitoring device includes a main controller, and a display device communicated with the main controller and several types of bus interfaces;

The main controller establishes a communication connection with the battery management system through the bus interface;

The main controller receives the battery parameters transmitted by the battery management system through the bus interface, and drives the display device to monitor and display the battery status in the battery management system based on the battery parameters.

Preferably, the main controller includes an MCU (Microcontroller Unit, micro control unit);

And/or, the bus interface includes a CAN (Controller Area Network, controller area network, a bus communication protocol) bus interface or a UART (Universal Asynchronous Receiver/Transmitter, Universal Asynchronous Receiver Transmitter) bus interface.

Preferably, the display device includes a liquid crystal display;

The liquid crystal display screen is connected with the output end of the main controller.

Preferably, the monitoring device further includes a communication module;

The display device corresponds to an external communication device integrated with a display screen;

The communication module is respectively connected to the external communication device and the main controller in communication;

The communication module is used to receive the battery parameters sent by the main controller and send them to the external communication device.

Preferably, when the communication module includes a wireless communication module, the wireless communication module includes a Bluetooth module, a 4G (fourth generation mobile communication technology) communication module, a 5G (fifth generation mobile communication technology) communication At least one of module, WI-FI (mobile hotspot) module, RFID (Radio Frequency Identification, radio frequency identification technology) module and Zigbee (Zigbee) module;

And/or, when the communication module includes a wired communication module, the wired communication module includes at least one of a USB module, a serial port module and an Ethernet module.

Preferably, the monitoring device further includes several buttons, and the buttons are connected with the main controller;

Wherein, the keys include press keys and/or touch keys.

Preferably, the monitoring device also includes a buzzer;

The buzzer is connected in communication with the main controller, and the buzzer is used to receive the alarm information sent by the main controller and send an alarm signal;

And/or, the monitoring device further includes a storage module;

The storage module is connected in communication with the main controller, and the storage module is used for storing the battery parameters.

Preferably, the monitoring device further includes a power module, and the power module is used to supply power to the monitoring device.

Preferably, the power supply module includes a TypeC (full name is USB Type-C, a universal serial bus interface standard) interface, and the power supply module is connected to an external power supply based on the TypeC interface;

And/or, the power module includes a rechargeable battery.

Preferably, the monitoring device further includes a power collection module;

The power collection module is respectively connected to the power supply module and the main controller in communication;

The power collection module is used to collect the power value of the power module, and send the power value to the main controller;

The display device is also used to receive and display the power value sent by the main controller.

The positive progressive effect of the present utility model is:

The monitoring device for the battery management system of the utility model designs a portable detachable monitoring device for the battery management system. Specifically, the monitoring device is detachably connected with the battery management system, which is similar to the prior art. In contrast, the monitoring device exists independently and is a separate device used in conjunction with the battery management system. The monitoring device is specially used to monitor the battery management system, and the battery parameters of the battery pack in the battery management system are obtained in time and visualized. The battery parameters are displayed accurately, so as to realize the real-time monitoring of the battery management system.

Since the monitoring device is a separate device and is no longer installed inside the battery management system, such a structural design does not occupy the internal space of the battery management system and reduces the energy loss of the battery pack in the battery management system by the monitoring device; the size of the monitoring device is smaller It is small and detachably connected with the battery management system, so it is easy to carry, and supports multiple types of bus interfaces at the same time. It has high versatility and can be adapted to the existing battery management system. It has high flexibility and wide application range; The power module of the monitoring device includes a rechargeable battery, which can charge the monitoring transposition through the TypeC interface, and has a strong battery life, further expanding the scope of use of the monitoring device.

Description of drawings

FIG. 1 is a schematic diagram of a first structure of a monitoring device for a battery management system provided in Embodiment 1 of the present invention;

FIG. 2 is a second structural schematic diagram of the monitoring device for the battery management system provided in Embodiment 1 of the present invention.

detailed description

The utility model is further illustrated below by means of examples, but the utility model is not limited to the scope of the examples.

Example 1

This embodiment provides a monitoring device for a battery management system. FIG. 1 is a schematic diagram of the first structure of the monitoring device for a battery management system provided by this embodiment; FIG. 2 is the utility model provided by Embodiment 1 A second structural schematic diagram of a monitoring device for a battery management system. As shown in Figures 1 and 2, the monitoring device is detachably connected to the battery management system, and the monitoring device includes a main controller 1, a display device 2 and several types of bus interfaces 3 communicated with the main controller 1; the main control The controller 1 establishes a communication connection with the battery management system through the bus interface 3; the main controller 1 receives the battery parameters transmitted by the battery management system through the bus interface 3, and drives the display device 2 based on the battery parameters to monitor and display the battery status in the battery management system .

In the monitoring device used in the battery management system in this embodiment, the monitoring device is detachably connected to the battery management system, so that the monitoring device exists independently outside the battery management system. Several battery packs are integrated inside the battery management system, and each battery pack has Corresponding parameters, when the main controller 1 establishes a communication connection with the battery management system through the bus interface 3, the battery management system will transmit the battery parameters of all battery packs to the main controller 1 through the bus interface 3, and the main controller 1 will receive the The battery parameters are output to the display device 2, and the display device displays the battery parameters, realizing the monitoring of the battery status in the battery management system.

Among them, battery parameters include but not limited to battery mode, function status, current voltage, real-time current, remaining capacity percentage, charge and discharge overvoltage state, charge and discharge overcurrent state, charge and discharge overtemperature state, RTC (Real Time Clock, real time clock ) status, battery alarm information, battery serial number and battery software version information.

The monitoring device for the battery management system in this embodiment designs a portable and detachable monitoring device for the battery management system. Specifically, the monitoring device is detachably connected to the battery management system, which is similar to the prior art. In contrast, the monitoring device exists independently and is a separate device used in conjunction with the battery management system. The monitoring device is specially used to monitor the battery management system, and the battery parameters of the battery pack in the battery management system are obtained in time and visualized. The battery parameters are displayed accurately, so as to realize the real-time monitoring of the battery management system. Since the monitoring device is a separate device and is no longer installed inside the battery management system, such a structural design does not occupy the internal space of the battery management system and reduces the energy loss of the battery pack in the battery management system by the monitoring device; the size of the monitoring device is smaller It is small and detachably connected to the battery management system, so it is easy to carry, and supports multiple types of bus interfaces. It has high versatility and can be adapted to existing battery management systems. It has high flexibility and a wide range of applications.

In an optional implementation manner, the main controller includes an MCU, which is small in size and capable of precise control. Of course, other modules or devices with control functions can also be used, as long as the corresponding functions can be realized.

In an optional implementation manner, the bus interface includes a CAN bus interface or a UART bus interface. Of course, other types of bus interface forms can also be used, as long as the requirements of corresponding communication scenarios can be met.

Common MCUs have UART pins reserved inside. When the MCU communicates with the UART bus interface, the UART pins reserved inside the MCU directly receive the battery parameters of the battery management system transmitted by the UART bus interface, without data communication of the battery parameters. The format is converted, and the MCU can recognize and process it.

If the bus interface is a CAN bus interface, the MCU needs to convert the data communication format of the battery parameters, and convert the battery parameters from the data format corresponding to the CAN protocol to the battery parameters conforming to the MCU communication format, so that the MCU can identify and process them.

When communicating between the various modules in the monitoring device, the format conversion of the received relevant data can be performed based on the corresponding communication data format of each module, so that the relevant data conforms to its own communication format requirements, which is not limited by the present invention , the specific content will not be repeated here.

The monitoring device for the battery management system in this embodiment is equipped with UART communication and CAN communication, basically fully adapts to the existing battery management system, meets the communication requirements of the battery management system and the monitoring device, and has high versatility. The use flexibility is high, and the application range is wide, which expands the application scenarios of the monitoring device.

In an optional implementation manner, as shown in FIGS. 1 and 2 , the display device 2 includes a liquid crystal display 21 , and the liquid crystal display 21 is connected to the output end of the main controller 1 .

The liquid crystal display includes but not limited to OLED (Organic Light-Emitting Diode, organic light-emitting diode), LED (Light-Emitting Diode, light-emitting diode) and TFT (Thin Film Transistor, thin film transistor) type liquid crystal display, the liquid crystal display and The output terminal of the main controller is connected to display the received battery parameters, realizing simple visualization, which is convenient for users to directly and real-time watch the battery status in the battery management system through the LCD screen, so as to realize the monitoring of the battery status, and then timely Investigate and deal with exceptions found.

In an optional embodiment, as shown in Figures 1 and 2, the monitoring device also includes a communication module 4, the display device 2 is an external communication device 22 integrated with a display screen, and the communication module 4 communicates with the external communication device 22 respectively. It communicates with the main controller 1 , and the communication module 4 is used to receive the battery parameters sent by the main controller 1 and send them to the external communication device 22 .

The external communication device is a device with a display screen, which can be a personal computer (Personal Computer, PC), such as a desktop computer, an all-in-one computer, a notebook computer, a tablet computer, etc., or a mobile phone, a wearable device, and a personal digital assistant (Personal Digital Assistant). , PDA) and other terminal devices, as long as there is a display screen, the user can check the battery parameters on the APP (Application, application program) of the external communication device. When the user uses the external communication device to check the battery parameters, he can choose to turn off the LCD display The battery parameters are displayed on the screen.

The communication module is the connection bridge between the external communication equipment and the main controller. The communication module sends the battery parameters to the external communication equipment, and the external communication equipment displays the received battery parameters, so that users can view the battery management system through the external communication equipment. The status of the battery in the middle, so as to realize the monitoring of the battery status. It is also possible to receive control commands sent by external communication devices based on the communication module, so that the external communication devices can realize corresponding display functions; the specific implementation process belongs to the mature technology in the field, and will not be repeated here.

In an optional embodiment, as shown in Figure 1 and Figure 2, when the communication module 4 includes a wireless communication module 41, the wireless communication module 41 includes but is not limited to a Bluetooth module, a 4G communication module, a 5G communication module, WI-FI module, RFID module and Zigbee module, various types of wireless communication modules can be used in combination and the number is not limited, and other types of wireless communication modules can also be used, as long as they can meet the needs of wireless communication Can.

The communication module in this embodiment establishes the communication connection between the external communication device and the main controller through the wireless communication module, and realizes the long-distance wireless communication connection between the external communication device and the main controller, so that the connection between the external communication device and the monitoring device There is no physical line connection between them, which further expands the application scenarios of the monitoring device.

In an optional embodiment, as shown in FIG. 1, when the communication module 4 includes a wired communication module 42, the wired communication module 42 includes but is not limited to a USB (Universal Serial Bus, Universal Serial Bus, a serial port bus standard) module, serial port module and Ethernet module. Various types of wired communication modules can be used in combination and the number is not limited, and other types of wired communication modules can also be used, as long as they can meet the requirements of wired communication.

Serial port modules include, but are not limited to, modules conforming to RS485 (a communication interface standard), RS232 (a communication interface standard) and RS422 (a communication interface standard) communication standards. The Ethernet module is a module connected through a network cable.

The communication module in this embodiment is a wired communication module. In areas with poor signal, or when the wireless communication module is abnormal, or when the external communication equipment does not support wireless transmission technology, the wired communication module can be used to establish The communication connection between the external communication equipment and the main controller ensures the communication reliability between the monitoring device and the external communication equipment.

The user can choose to use the wired communication module or the wireless communication module according to the usage environment, and the utility model does not make any limitation on the priority of using the wired communication module and the wireless communication module.

In an optional embodiment, as shown in FIG. 2 , the monitoring device further includes several buttons 6 connected to the main controller 1 , wherein the buttons 6 include but are not limited to press buttons and touch buttons.

The main controller responds to the user's button operation through the buttons, and the user realizes the page-turning operation of the display device, the switching operation of the monitoring device, and the backlight operation of the LCD display through the buttons set on the monitoring device.

For example, when the monitoring device is in the off state, long pressing the switch button can wake up the main controller to start the monitoring device; Zero power consumption.

In an optional embodiment, as shown in Figure 2, the monitoring device also includes a buzzer 7, the buzzer 7 is communicatively connected with the main controller 1, and the buzzer 7 is used to receive the alarm information sent by the main controller and issue a warning signal.

The battery parameters include battery alarm information, such as alarm information such as battery temperature is too high, the main controller converts the battery alarm information into alarm information that the buzzer can recognize, and sends the alarm information to the buzzer. An alarm signal is sent to prompt the user when the information is displayed.

In an optional embodiment, as shown in FIG. 1 and FIG. 2 , the monitoring device further includes a storage module 5; the storage module 5 communicates with the main controller 1, and the storage module 5 is used for storing battery parameters.

Storage modules include, but are not limited to, random access memory (RAM), cache memory, read only memory (ROM), and flash memory (flash).

The storage module can store battery parameters in real time. When the user needs to view the historical battery parameters, he can press or touch the page turning button set on the monitoring device, so that the main controller can call out the historical battery parameters stored in the storage module and send them to the display device for further processing. Displayed so that users can view historical battery parameters.

The main controller can monitor and summarize the power of each battery in the battery management system based on the battery parameters to obtain power monitoring related data, and send the power monitoring related data to the display device, and then display the power monitoring curve through the display device.

In an optional implementation manner, as shown in FIG. 2 , the monitoring device further includes a power supply module 8, and the power module 8 is used to supply power to the monitoring device.

In an optional implementation manner, the power module includes a TypeC interface, and the power module is connected to an external power supply based on the TypeC interface.

In an optional embodiment, the power module includes a rechargeable battery.

For example, a rechargeable lithium battery makes the monitoring device portable and has a strong battery life. The power module is fully enclosed and does not need to be taken out, it is integrated inside the monitoring device, and is connected to an external power source through the TypeC interface to charge the rechargeable battery, so that the monitoring device does not need to be connected to an external power source during use, and can be powered by its own integrated power module. Each module in the monitoring device that needs power supply supplies power. The rechargeable lithium battery has safety functions such as overcharge and overcurrent protection, which can ensure the safety of the battery module.

The monitoring device is very small and can be carried with you. It is charged with the Type-C interface and has a long battery life. It does not consume the power of the battery pack in the battery management system during use.

The power module includes a DC/DC (Direct Current/Direct Current, DC converter) circuit and an LDO (Low Dropout Regulator, low-dropout linear regulator) circuit, which are used to convert the voltage input from the external power supply to adapt to Distribution of charging requirements of the power module, and conversion of the voltage inside the power module, so that the output voltage of the power module meets the power supply voltage requirements of each module.

The power supply module may include several power isolation units, and the power isolation unit electrically isolates the output voltage of the power supply module and then outputs it to each module correspondingly connected to the power supply module, so that each module uses a power supply voltage that is electrically isolated from each other, such as the main controller, The liquid crystal display and the communication module each use a power supply voltage that is electrically isolated from each other, and the voltage fluctuation of any one side will not affect the voltage of other modules.

In an optional embodiment, as shown in FIG. 2 , the monitoring device also includes a power collection module 9, and the power collection module 9 is respectively connected to the power supply module 8 and the main controller 1 in communication; the power collection module 9 is used to collect power supply modules 8, and send the power value to the main controller 1; the display device 2 is also used to receive and display the power value sent by the main controller 1.

The power acquisition module is used to collect the power value of the power module and send it to the main controller. The display device is used to receive and display the power value sent by the main controller, so that the user can know the power value of the battery module in the monitoring device in time (that is, the power value of the monitoring device) power value), in the case of insufficient power, charge the power module in time. During the charging process, the monitoring device can continue to monitor the battery management system.

The monitoring device used in the battery management system of the utility model can also add other functional modules to realize corresponding functions and meet higher requirements of users.

Although the specific implementation of the utility model has been described above, those skilled in the art should understand that this is only an example, and the protection scope of the utility model is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principle and essence of the present utility model, but these changes and modifications all fall within the protection scope of the present utility model.

Claims (10)

1. A monitoring device for a battery management system, characterized in that the monitoring device is detachably connected to the battery management system, the monitoring device includes a main controller, and a communication connection with the main controller Display devices and several types of bus interfaces; The main controller establishes a communication connection with the battery management system through the bus interface; The main controller receives the battery parameters transmitted by the battery management system through the bus interface, and drives the display device to monitor and display the battery status in the battery management system based on the battery parameters. 2. The monitoring device according to claim 1, wherein the main controller comprises an MCU; And/or, the bus interface includes a CAN bus interface or a UART bus interface. 3. The monitoring device according to claim 1, wherein the display device comprises a liquid crystal display; The liquid crystal display screen is connected with the output end of the main controller. 4. The monitoring device according to claim 1, further comprising a communication module; The display device corresponds to an external communication device integrated with a display screen; The communication module is respectively connected to the external communication device and the main controller in communication; The communication module is used to receive the battery parameters sent by the main controller and send them to the external communication device. 5. The monitoring device according to claim 4, wherein when the communication module includes a wireless communication module, the wireless communication module includes a Bluetooth module, a 4G communication module, a 5G communication module, a Wi-Fi -At least one of Fi module, RFID module and Zigbee module; And/or, when the communication module includes a wired communication module, the wired communication module includes at least one of a USB module, a serial port module and an Ethernet module. 6. The monitoring device according to claim 1, characterized in that, the monitoring device further comprises a plurality of buttons, and the buttons are connected to the main controller; Wherein, the keys include press keys and/or touch keys. 7. The monitoring device according to claim 1, further comprising a buzzer; The buzzer is connected in communication with the main controller, and the buzzer is used to receive the alarm information sent by the main controller and send an alarm signal; And/or, the monitoring device further includes a storage module; The storage module is connected in communication with the main controller, and the storage module is used for storing the battery parameters. 8. The monitoring device according to any one of claims 1 to 7, characterized in that, the monitoring device further comprises a power module, and the power module is used to supply power to the monitoring device. 9. The monitoring device according to claim 8, wherein the power module includes a TypeC interface, and the power module is connected to an external power supply based on the TypeC interface; And/or, the power module includes a rechargeable battery. 10. The monitoring device according to claim 8, characterized in that, the monitoring device further comprises a power collection module; The power collection module is respectively connected to the power supply module and the main controller in communication; The power collection module is used to collect the power value of the power module, and send the power value to the main controller; The display device is also used to receive and display the power value sent by the main controller.

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