A mutual identification method of lithium battery, controller and charger

Abstract

This invention discloses a method for mutual recognition between a lithium battery, a controller, and a charger, comprising the following steps: S1, the BMS control board is bound to a cloud box; S2, the BMS control board sends controller verification package A and charger verification package A, and the cloud box responds to the BMS control board by selecting the corresponding protocol information; S3, the BMS control board sends public package data, private package data, and lithium battery ID information to the cloud box according to the protocol information; S4, the cloud box compares the received data for consistency; if inconsistent, it closes the connection; if consistent, the cloud box parses and obtains controller verification package B and charger verification package B, and sends them to the controller and charger, which respond to the cloud box; S5, the cloud box determines compliance upon receipt; if non-compliant, it closes the connection; if compliant, it opens the connection. Through the central coordination of the cloud box, illegal replacement or modification of the lithium battery, charger, and controller is prevented, ensuring the compatibility between the lithium battery and the charger / controller.

Description

Technical Field

[0001] This invention relates to electric vehicles, and more particularly to a method for mutual recognition of lithium batteries, controllers, and chargers. Background Technology

[0002] Currently, lithium-ion electric bicycles on the market can be used as long as the voltage of the lithium battery meets the requirements. This has led to dealers or users changing the specifications of lithium batteries when buying and selling them. Some dealers also illegally modify lithium batteries, which may cause fires when the lithium battery is incompatible with the charger and controller during subsequent charging, posing a serious safety hazard. Therefore, improvements are needed. Summary of the Invention

[0003] This invention addresses the shortcomings of existing technologies, such as the potential for fires caused by incompatibility between lithium batteries and chargers / controllers after manual replacement or modification. It provides a new method for mutual recognition between lithium batteries and controllers / chargers.

[0004] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution:

[0005] A method for mutual recognition between a lithium battery, a controller, and a charger includes a lithium battery, a cloud box, a charger, a controller, and a server. The cloud box has a built-in protocol information set composed of protocol information. The cloud box is connected to the charger and the controller, and the cloud box communicates with the server. A BMS control board is installed on the lithium battery, and the BMS control board has charging MOSFETs and discharging MOSFETs. The BMS control board has built-in lithium battery ID information, and the cloud box has built-in cloud box ID information. The method further includes the following steps:

[0006] S1. Bind the lithium battery ID information built into the BMS control board with the cloud box ID information of the cloud box, and save the lithium battery ID information to the cloud box to form lithium battery ID verification information.

[0007] S2. Connect the lithium battery BMS control board to the cloud box. Then, the BMS control board sends the first controller verification packet and the first charger verification packet containing the protocol content to the cloud box. After receiving the cloud box, it obtains the protocol content in the first controller verification packet and the first charger verification packet and selects the corresponding protocol information from the built-in protocol information set to respond to the BMS control board according to the protocol content.

[0008] S3. After receiving the protocol information, the BMS control board sends public packet data, private packet data, and the lithium battery ID information built into the BMS control board to the cloud box according to the protocol information.

[0009] S4. After receiving the public and private package data, the cloud box compares the lithium battery ID information sent by the BMS control board with the lithium battery ID verification information stored in the cloud box. If they do not match, the cloud box sends non-compliance information to the BMS control board. After receiving the non-compliance information, the BMS control board turns off the charging MOSFET and the discharging MOSFET. If they match, the cloud box parses the public and private package data to obtain the second controller verification package and the second charger verification package. The cloud box then sends the second controller verification package to the controller and the second charger verification package to the charger. After receiving these, the controller and the charger send their respective response packages to the cloud box.

[0010] S5. After receiving the controller response packet and the charger response packet, the cloud box determines whether the controller response packet and the charger response packet are compliant. If they are not compliant, the cloud box sends non-compliance information to the BMS control board. After receiving the information, the BMS control board turns off the charging MOSFET and the discharging MOSFET. If they are compliant, the cloud box sends compliance information to the BMS control board. After receiving the compliance information, the BMS control board turns on the charging MOSFET and the discharging MOSFET.

[0011] Preferably, in the above-described method for mutual recognition between a lithium battery, a controller, and a charger, the BMS control board connects to the cloud box via a handshake protocol.

[0012] Preferably, in the above-described method for mutual recognition between a lithium battery, a controller, and a charger, in step S2, the cloud box responds with its built-in protocol information to the BMS control board within 2 seconds.

[0013] Preferably, in the above-described method for mutual recognition between a lithium battery and a controller and a charger, in step S4, the controller and the charger respectively send a controller response packet and a charger response packet to the cloud box within 2 seconds.

[0014] Preferably, in the above-described method for mutual recognition between lithium battery, controller, and charger, the lithium battery ID information built into the BMS control board is bound to the cloud box ID information of the cloud box by scanning a code.

[0015] Preferably, in the above-described method for mutual recognition between a lithium battery, a controller, and a charger, the communication connection between the cloud box and the server is a Wi-Fi connection, a 4G communication connection, or a 5G communication connection.

[0016] This invention, through the central coordination of the cloud box and the aforementioned steps, on the one hand, binds the lithium battery to the cloud box, preventing unauthorized replacement or modification of the lithium battery; on the other hand, it enables communication with the charger and controller, establishing mutual recognition and further preventing unauthorized replacement or modification of the charger and controller. This ensures the compatibility between the lithium battery and the charger / controller, avoiding fires caused by charging or discharging under incompatible conditions, thus enhancing safety during use. The cloud box's built-in protocol information set stores various protocol information, enabling mutual recognition between different lithium batteries, chargers, and controllers, expanding the applicability of this invention. Furthermore, the cloud box's communication connection with the server allows for real-time data acquisition and updates, avoiding the complexity and time-consuming nature of manual updates, and improving data update efficiency. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention. Detailed Implementation

[0018] The following is in conjunction with the appendix Figure 1 The invention will be further described in detail with reference to specific embodiments, but these are not intended to limit the invention: Example 1

[0019] A method for mutual recognition between a lithium battery, a controller, and a charger includes a lithium battery 1, a cloud box 3, a charger 2, a controller 5, and a server 4. The cloud box 3 has a built-in protocol information set composed of protocol information. The cloud box 3 is connected to the charger 2 and the controller 5 respectively. The cloud box 3 is communicatively connected to the server 4. The lithium battery 1 is equipped with a BMS control board 11, which is equipped with a charging MOSFET 12 and a discharging MOSFET 13. The BMS control board 11 has built-in lithium battery ID information, and the cloud box 3 has built-in cloud box ID information. The method further includes the following steps:

[0020] S1. Bind the lithium battery ID information built into the BMS control board 11 with the cloud box ID information of the cloud box 3, and save the lithium battery ID information to the cloud box 3 to form lithium battery ID verification information.

[0021] S2. Connect the BMS control board 11 of the lithium battery 1 to the cloud box 3. Then, the BMS control board 11 sends the first controller verification packet and the first charger verification packet containing the protocol content to the cloud box 3. After receiving the cloud box 3, it obtains the protocol content in the first controller verification packet and the first charger verification packet and selects the corresponding protocol information from the built-in protocol information set according to the protocol content to respond to the BMS control board 11.

[0022] S3. After receiving the protocol information, the BMS control board 11 sends public packet data, private packet data, and the lithium battery ID information built into the BMS control board 11 to the cloud box 3 according to the protocol information.

[0023] S4. After receiving the public package data and the private package data, the cloud box 3 compares the lithium battery ID information sent by the BMS control board 11 with the lithium battery ID verification information stored in the cloud box 3. If they do not match, the cloud box 3 sends non-compliance information to the BMS control board 11. After receiving the non-compliance information, the BMS control board 11 turns off the charging MOSFET 12 and the discharging MOSFET 13. If they match, the cloud box 3 parses the public package data and the private package data to obtain the second controller verification package and the second charger verification package. The second controller verification package is sent to the controller 5 and the second charger verification package is sent to the charger 2. After receiving them, the controller 5 and the charger 2 respectively respond to the cloud box 3 with the controller response package and the charger response package.

[0024] S5. After receiving the controller response packet and the charger response packet, the cloud box 3 determines whether the controller response packet and the charger response packet are compliant. If they are not compliant, the cloud box 3 sends non-compliance information to the BMS control board 11. After receiving the information, the BMS control board 11 turns off the charging MOSFET 12 and the discharging MOSFET 13. If they are compliant, the cloud box 3 sends compliance information to the BMS control board 11. After receiving the compliance information, the BMS control board 11 turns on the charging MOSFET 12 and the discharging MOSFET 13.

[0025] Preferably, the BMS control board 11 is connected to the cloud box 3 via a handshake protocol.

[0026] Preferably, in step S2, the cloud box 3 responds with the built-in protocol information to the BMS control board 11 within 2 seconds.

[0027] Preferably, in step S4, the controller 5 and the charger 2 respectively send a controller response packet and a charger response packet to the cloud box 3 within 2 seconds.

[0028] Preferably, the lithium battery ID information built into the BMS control board 11 is bound to the cloud box ID information of the cloud box 3 by scanning a code.

[0029] Preferably, the communication connection between the cloud box 3 and the server 4 is a Wi-Fi connection, a 4G communication connection, or a 5G communication connection.

[0030] In summary, the above description is only a preferred embodiment of the present invention. All equivalent changes and modifications made within the scope of the claims of the present invention should be included within the scope of the present invention.

Claims

1. A method for mutual recognition between a lithium battery, a controller, and a charger, characterized in that, The system includes a lithium battery (1), a cloud box (3), a charger (2), a controller (5), and a server (4). The cloud box (3) has a built-in protocol information set composed of protocol information. The cloud box (3) is connected to the charger (2) and the controller (5) respectively. The cloud box (3) is connected to the server (4) for communication. The lithium battery (1) is equipped with a BMS control board (11). The BMS control board (11) is equipped with a charging MOSFET (12) and a discharging MOSFET (13). The BMS control board (11) has built-in lithium battery ID information. The cloud box (3) has built-in cloud box ID information. The system also includes the following steps: S1. Bind the lithium battery ID information built into the BMS control board (11) with the cloud box ID information of the cloud box (3), and save the lithium battery ID information into the cloud box (3) to form lithium battery ID verification information. S2. Connect the BMS control board (11) of the lithium battery (1) to the cloud box (3). Then, the BMS control board (11) sends the first controller verification packet and the first charger verification packet containing the protocol content to the cloud box (3). After receiving the cloud box (3), it obtains the protocol content in the first controller verification packet and the first charger verification packet and selects the corresponding protocol information from the built-in protocol information set according to the protocol content to respond to the BMS control board (11). S3. After receiving the protocol information, the BMS control board (11) sends public packet data, private packet data and lithium battery ID information built into the BMS control board (11) to the cloud box (3) according to the protocol information. S4. After receiving the public package data and the private package data, the cloud box (3) compares whether the lithium battery ID information sent by the BMS control board (11) is consistent with the lithium battery ID verification information stored in the cloud box (3). If they are inconsistent, the cloud box (3) sends non-compliance information to the BMS control board (11). After receiving the non-compliance information, the BMS control board (11) shuts down the charging MOSFET (12) and the discharging MOSFET (13). If they are consistent, the cloud box (3) parses the public package data and the private package data to obtain the second controller verification package and the second charger verification package. The second controller verification package is sent to the controller (5) and the second charger verification package is sent to the charger (2). After receiving them, the controller (5) and the charger (2) respectively send the controller response package and the charger response package to the cloud box (3). S5. After receiving the controller response packet and the charger response packet, the cloud box (3) determines whether the controller response packet and the charger response packet are compliant. If they are not compliant, the cloud box (3) sends non-compliant information to the BMS control board (11). After receiving the information, the BMS control board (11) turns off the charging MOSFET (12) and the discharging MOSFET (13). If they are compliant, the cloud box (3) sends compliant information to the BMS control board (11). After receiving the compliant information, the BMS control board (11) turns on the charging MOSFET (12) and the discharging MOSFET (13).

2. The method for mutual recognition of a lithium battery, controller, and charger according to claim 1, characterized in that: The BMS control board (11) connects to the cloud box (3) via a handshake protocol.

3. The method for mutual recognition of lithium battery, controller, and charger according to claim 1, characterized in that: In step S2, the cloud box (3) responds with the built-in protocol information to the BMS control board (11) within 2 seconds.

4. The method for mutual recognition of lithium battery, controller, and charger according to claim 1, characterized in that: In step S4, the controller (5) and the charger (2) send the controller response packet and the charger response packet to the cloud box (3) respectively within 2 seconds.

5. The method for mutual recognition of a lithium battery, controller, and charger according to claim 1, characterized in that: The lithium battery ID information built into the BMS control board (11) is bound to the cloud box ID information of the cloud box (3) by scanning a code.

6. The method for mutual recognition of a lithium battery, controller, and charger according to claim 1, characterized in that: The communication connection between the cloud box (3) and the server (4) is a Wi-Fi connection, a 4G communication connection, or a 5G communication connection.

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