A standardized power battery module and acquisition board connection structure and connection method

Abstract

The present invention discloses a standardized power battery module and acquisition board connection structure and a connection method thereof, wherein the connection structure includes a quick-plug connector and multiple wiring harnesses; the quick-plug connector includes a female connector and a male connector for plug-in connection; the female connector is provided at the front end of each power battery module; the standardized battery cell acquisition board includes multiple plug-ins and multiple AFE battery cell acquisition chips, each plug-in corresponds one-to-one with the battery cell and temperature sensor acquisition port of each AFE battery cell acquisition chip; the female connector at the front end of the power battery module is plug-in connected to the male connector, and the male connector is connected to the plug-in on the standardized battery cell acquisition board via a wiring harness. The present invention improves universality, reduces battery cell acquisition wiring harnesses in the battery pack, reduces installation time, improves space utilization in the battery pack, and improves safety performance by designing a high- and low-voltage integrated quick-plug connector and a standardized acquisition board layout.

Description

Technical Field

[0001] The present invention relates to the technical field of new energy vehicle power batteries, and in particular to a standardized power battery module and acquisition board connection structure and a connection method thereof. Background Art

[0002] Power batteries are the core energy source that provides driving power for new energy vehicles and are one of their most critical components. Power batteries consist of battery packs, battery modules, and battery cells. Multiple single cells are spliced ​​together to form a battery module, and multiple battery modules are connected to form a battery pack. The battery pack also includes components such as the battery management system (BMS), electrical system, thermal management system, and structural components. The battery module, battery management system BMS, electrical system, thermal management system, and structural components are encapsulated in a housing to form the main body of the power battery.

[0003] The battery management system (BMS) is an important component of the power battery of new energy vehicles. BMS is a system that monitors and manages the battery. It collects and calculates parameters such as voltage, current, temperature and state of charge (SOC), thereby controlling the battery's charge and discharge process, protecting the battery and improving its overall performance. The battery management system (BMS) is an important link between the on-board power battery and the electric vehicle. Generally, the hardware architecture of the battery management system is as follows: Figure 1 As shown in the figure, it includes the main board BCU, the slave board LCU (also known as the acquisition board), the battery pack disconnect unit (BDU, Battery Disconnect Unit) and the high-voltage control board. Among them, the acquisition board collects and monitors the voltage, temperature and other information of the power battery module, and transmits this information to the main board via CAN communication or daisy chain communication. The main board collects the sampled information from each slave board LCU, communicates with the entire vehicle through a low-voltage electrical interface, controls the operation of the relays in the BDU, and monitors various battery statuses to ensure safe use of the battery during the charging and discharging process.

[0004] To ensure cell safety, real-time monitoring of each power battery module's cells is required via an acquisition board. Currently, the power battery modules of most new energy vehicles are non-standard designs, connected by copper busbars and wiring harnesses, which prevents quick connection and universalization. Traditional power battery modules typically use copper busbars for high-voltage connections and wiring harnesses for low-voltage acquisition. This is not only costly and inefficient, but also hinders direct installation of power battery modules on the vehicle production line.

[0005] Furthermore, both centralized and distributed systems require different acquisition boards for different battery packs, significantly increasing design and development costs. Typically, centralized systems are used to save costs, but this also creates a large number of acquisition wiring harnesses, which can pose electrical safety risks. Summary of the Invention

[0006] In response to the shortcomings of the existing technology, the present invention proposes a standardized power battery module and acquisition board connection structure and connection method. By standardizing the power battery module quick-plug connector and the battery management system acquisition board, the versatility is improved, the acquisition wiring harness of the battery cells in the battery pack is greatly reduced, the installation time of the module is shortened, the space utilization rate in the battery pack is improved, the safety of operation is improved, the battery pack is made tidier, and the safety hazards of electrical appliances are reduced.

[0007] To achieve the above objectives, one or more embodiments of the present invention provide the following technical solutions:

[0008] A first aspect of the present invention provides a standardized connection structure between a power battery module and an acquisition board.

[0009] A standardized power battery module and acquisition board connection structure, including a quick-connect connector and multiple wiring harnesses;

[0010] The quick-plug connector includes a female connector and a male connector for plug-in connection; a female connector is provided at the front end of each power battery module; the acquisition board is a standardized battery cell acquisition board, including multiple plug-ins and multiple AFE battery cell acquisition chips, each plug-in corresponds to the battery cell and temperature sensor acquisition port of each AFE battery cell acquisition chip;

[0011] The female connector at the front end of the power battery module is plugged into the male connector, and the male connector is connected to the plug-in on the standardized battery cell collection board through a wiring harness.

[0012] A further technical solution is that the female connector is fixedly installed at the front end of the power battery module shell, and a female high-voltage contact and a female low-voltage contact are arranged inside the female connector. The female high-voltage contact is connected to the bus inside the power battery module, and the female low-voltage contact is connected to the collection harness inside the power battery module.

[0013] In a further technical solution, the female connector includes an integrally formed female insulating housing, wherein the female insulating housing is a rectangular parallelepiped structure with one side open, the opening facing outward, and the side corresponding to the opening is embedded in the power battery module housing;

[0014] The female end high voltage contact piece and the female end low voltage contact piece are both fixedly arranged in the female end insulating housing.

[0015] According to a further technical solution, a female end positioning hole is fixedly provided in the female end insulating housing.

[0016] According to a further technical solution, the male connector is plugged into the female connector, and a male high-voltage contact and a male low-voltage contact are provided inside the male connector. The male high-voltage contact matches and corresponds to the female high-voltage contact, and the male low-voltage contact matches and corresponds to the female high-voltage contact;

[0017] The male high-voltage contact of the male connector is connected in series with other standardized battery modules through a wiring harness; the male low-voltage contact of the male connector is connected to the plug-in on the standardized battery cell collection board through a wiring harness.

[0018] According to a further technical solution, the male connector includes an insulating base plate, an insulating protective ring is fixedly provided on the insulating base plate, and the male high-voltage contact piece and the male low-voltage contact piece are provided in the insulating protective ring.

[0019] According to a further technical solution, male end positioning pins are further provided on the insulating base plate, and the male end positioning pins are arranged on both sides outside the insulating protective ring and match the female end positioning holes of the female end connector.

[0020] According to a further technical solution, a sealing rubber ring is further provided on the insulating bottom plate, and the sealing rubber ring is arranged at the mating contact surfaces of the male connector and the female connector.

[0021] A further technical solution is that multiple plug-ins are arranged in sequence on one side of the acquisition board, and communication plug-ins are respectively arranged on the front and back sides of the multiple plug-ins, which are communication import plug-ins and communication export plug-ins, respectively, for connecting in series with other acquisition boards and the main board through daisy chain communication.

[0022] A second aspect of the present invention provides a method for connecting a standardized power battery module to an acquisition board, comprising:

[0023] Multiple adjacent power battery modules and acquisition boards are connected via a connecting structure;

[0024] The connection structure includes a quick-plug connector and multiple wiring harnesses; the quick-plug connector includes a female connector and a male connector for plug-in connection; a female connector is provided at the front end of each power battery module; the acquisition board is a standardized battery cell acquisition board, including multiple plug-ins and multiple AFE battery cell acquisition chips, each plug-in corresponds to the battery cell and temperature sensor acquisition port of each AFE battery cell acquisition chip;

[0025] The female connector at the front end of the power battery module is plugged into the male connector, and the male connector is connected to the plug-in on the standardized battery cell collection board through a wiring harness.

[0026] One or more of the above technical solutions have the following beneficial effects:

[0027] (1) The present invention proposes a standardized power battery module and acquisition board connection structure and a connection method thereof. By designing a high and low voltage integrated quick-plug connector and a standardized layout of the acquisition board, the universality is improved, the battery cell acquisition harness in the battery pack is reduced, the installation time is reduced, the space utilization in the battery pack is improved, and the safety performance is improved.

[0028] (2) The present invention improves the convenience of power battery module assembly and battery replacement through a standardized power battery module quick-plug connector, and improves the versatility of the standardized module. The insulating shell of the quick-plug connector has an anti-finger touch design, which improves the safety of the standardized module installation operation and avoids the problem of low degree of connection commonality between battery modules, which is not conducive to the installation of power battery modules. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The accompanying drawings, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0030] Figure 1 This is a schematic diagram of the hardware architecture of the battery management system;

[0031] Figure 2 This is a structural diagram of the acquisition board according to an embodiment of the present invention;

[0032] Figure 3 This is a front view of the acquisition board according to an embodiment of the present invention;

[0033] Figure 4 This is a schematic diagram of the reverse side of the acquisition board according to an embodiment of the present invention;

[0034] Figure 5 This is a connection diagram of a battery management system according to an embodiment of the present invention;

[0035] Figure 6 This is a schematic structural diagram of the quick-connect connector according to an embodiment of the present invention;

[0036] Figure 7 This is a schematic structural diagram of the female connector in the quick-connect connector according to an embodiment of the present invention;

[0037] Figure 8 The figure is a schematic structural diagram of the male connector in the quick-connect connector according to an embodiment of the present invention.

[0038] Among them, 1. acquisition board, 11. first plug-in, 12. second plug-in, 13. third plug-in, 14. communication import plug-in, 15. communication export plug-in, 21. first AFE battery cell acquisition chip, 22. second AFE battery cell acquisition chip, 23. third AFE battery cell acquisition chip, 24. acquisition board mounting hole, 31. female end connector, 311. female end high-voltage contact, 312. female end low-voltage contact, 313. female end insulating shell, 314. female end positioning hole, 315. female end high-voltage contact insulator, 411. insulating bottom plate, 412. insulating protective ring, 413. male end high-voltage contact, 414. male end low-voltage contact, 415. male end positioning pin, 416. sealing rubber ring. DETAILED DESCRIPTION

[0039] It should be noted that the following detailed descriptions are exemplary and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which the present invention belongs.

[0040] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0041] Example 1

[0042] This embodiment proposes a standardized connection structure between a power battery module and an acquisition board. By designing integrated high and low voltage quick-plug connectors and a standardized layout of the acquisition board, it improves universality, reduces the number of cell acquisition harnesses in the battery pack, reduces installation time, improves space utilization in the battery pack, and improves safety performance.

[0043] A standardized power battery module and acquisition board connection structure, including a quick-connect connector and multiple wiring harnesses;

[0044] The quick-connect connector includes a female connector and a male connector for plug-in connection; a female connector is provided at the front end of each power battery module; the acquisition board is a standardized battery acquisition board, including multiple plug-ins and multiple AFE (Analog Front End) battery acquisition chips, each plug-in corresponds to the battery cell and temperature sensor acquisition port of each AFE battery acquisition chip;

[0045] The female connector at the front end of the power battery module is plugged into the male connector, and the male connector is connected to the plug-in on the standardized battery cell collection board through a wiring harness.

[0046] Furthermore, the female-end connector is installed at the front end of the power battery module shell, and a female-end high-voltage contact and a female-end low-voltage contact are arranged inside the female-end connector. The female-end high-voltage contact is connected to the bus bar inside the power battery module, and the female-end low-voltage contact is connected to the collection harness inside the power battery module. The above-mentioned female-end connector also includes an integrally formed insulating shell, which is a rectangular parallelepiped with one side open, the opening facing outward, and the side corresponding to the opening is embedded in the power battery module shell. The female-end high-voltage contact and the female-end low-voltage contact are both fixedly arranged in the insulating shell. In addition, a female-end positioning hole is also fixedly arranged in the insulating shell. In this embodiment, the female-end high-voltage contact is arranged above the female-end low-voltage contact, and female-end positioning holes are arranged on both sides of the female-end low-voltage contact.

[0047] Specifically, the female low-voltage contact is in the form of a needle, the collection harness inside the power battery module is connected to the female pin of the connector, and the female connector is then plugged into the male connector.

[0048] Furthermore, the male connector is pluggably connected to the female connector, and a male high-voltage contact and a male low-voltage contact are provided inside the male connector. The male high-voltage contact matches and corresponds to the female high-voltage contact, and the male low-voltage contact matches and corresponds to the female low-voltage contact. Both the male high-voltage contact and the male low-voltage contact of the male connector are connected to an external wiring harness.

[0049] The above-mentioned male connector also includes an insulating base plate, on which an insulating protective ring is fixedly arranged, and the male high-voltage contact and the male low-voltage contact are arranged in the insulating protective ring; the insulating base plate is also provided with a male positioning pin, which is arranged on both sides outside the insulating protective ring and matches the female positioning hole, and is used to fix the male connector and the female connector for plugging; when the male connector and the female connector are plugged in, there is a plug-in contact surface on the insulating base plate of the male connector, so a sealing rubber ring is also provided on the insulating base plate, which is arranged on the plug-in contact surface of the male connector and the female connector. After plugging in, the connector as a whole can reach a certain level of protection and has a certain shock-absorbing effect.

[0050] Furthermore, multiple plug-ins are sequentially arranged on one side of the standardized battery cell acquisition board, and communication plug-ins are respectively arranged on the front and back sides of the multiple plug-ins, one serving as a communication input for daisy-chain communication of multiple acquisition boards, and the other serving as a communication output for daisy-chain communication of multiple acquisition boards. Based on these two communication sockets, the battery management system acquisition board connects each acquisition board and the main board in series through daisy-chain communication to realize the monitoring of the battery cells.

[0051] The male high-voltage contact of the male connector is connected in series with other standardized battery modules through a wiring harness, specifically through a high-voltage wiring harness; the male low-voltage contact of the male connector is connected to the corresponding plug-in on the standardized battery cell acquisition board through a wiring harness to realize the acquisition of module battery cell voltage and temperature. Furthermore, the standardized battery cell acquisition board is installed close to the standardized battery module. When the plug-in connectors on the standardized battery module are plug-in connected and the plug-in connector output is connected to the standardized battery cell acquisition board, the AFE battery cell acquisition chip on the acquisition board collects information such as the voltage and temperature of the power battery module through the wiring harness, male connector, and female connector in sequence.

[0052] In this embodiment, if Figure 2 、 Figure 3 and Figure 4 As shown, three plug-ins are fixedly arranged on one side of the acquisition board 1 in sequence, namely the first plug-in 11, the second plug-in 12, and the third plug-in 13. Each plug-in corresponds to the battery cell of the AFE battery cell acquisition chip and the acquisition port of the temperature sensor one by one. The plug-in is connected to the AFE battery cell acquisition chip through the cable on the acquisition board, that is, the first plug-in 11 corresponds to the first AFE battery cell acquisition chip 21, the second plug-in 12 corresponds to the second AFE battery cell acquisition chip 22, and the third plug-in 13 corresponds to the third AFE battery cell acquisition chip 23.

[0053] Communication plug-ins are set on the front and back sides of the three plug-ins, namely the communication import plug-in 14 and the communication export plug-in 15. Only two lines are needed between each acquisition board for daisy chain communication connection, such as Figure 5 As shown, it is convenient for arbitrary combination of multiple acquisition boards.

[0054] Furthermore, in order to facilitate installation, the acquisition board of this embodiment is further provided with an acquisition board installation hole 24 to facilitate installation of the acquisition board to a corresponding position of the power battery.

[0055] A female connector of a plug-in connector is set at the front end of each power battery module. The acquisition board is close to the corresponding power battery module, and the female connector is plug-connected to the male connector. The male low-voltage contact of the male connector is connected to the corresponding plug-in of the acquisition board through a wiring harness.

[0056] The male connector and the female connector connected thereto form a quick-connect connector. Figure 6 As shown, a female connector 31 is provided at the front end of the power battery module. Figure 7As shown, the female connector 31 includes an integrally formed female insulating shell 313. The female insulating shell 313 is a rectangular parallelepiped with one side open, the opening facing outward, and the side corresponding to the opening is embedded in the power battery module housing. The female high-voltage contact 311 and the female low-voltage contact 312 are both fixedly arranged in the female insulating shell 313. The female high-voltage contact 311 is connected to the bus bar in the power battery module, and the female low-voltage contact 312 is connected to the collection harness in the power battery module. In addition, a female positioning hole 314 is fixedly provided in the female insulating shell 313. In this embodiment, the female high-voltage contact 311 is arranged above the female low-voltage contact, and female positioning holes 314 are provided on both sides of the female low-voltage contact 312.

[0057] To further improve safety, the female high-voltage contact 311 is located within the female high-voltage contact insulator 315. The female low-voltage contact is in the form of a pin. The collection harness inside the power battery module connects to the female pin of the connector, which then plugs into the male connector.

[0058] The male connector and the female connector are plug-connected. Figure 8 As shown, the male connector 41 includes an insulating base plate 411, on which an insulating protective ring 412 is fixedly arranged, and a male high-voltage contact 413 and a male low-voltage contact 414 are arranged in the insulating protective ring 412; the insulating base plate 411 is also provided with a male positioning pin 415, which is arranged on both sides outside the insulating protective ring 412 and matches the female positioning hole 314, and is used to fix the male connector and the female connector for plugging; when the male connector and the female connector are plugged in, there is a plug-in contact surface on the insulating base plate of the male connector, so a sealing rubber ring 416 is also provided on the insulating base plate 411, and the sealing rubber ring 416 is arranged on the plug-in contact surface of the male connector and the female connector. After plugging in, the connector as a whole can reach a certain level of protection and have a certain shock-absorbing effect.

[0059] The male high-voltage and low-voltage contacts of the male connector are both connected to an external wiring harness. The male low-voltage contacts of the male connector are connected to corresponding plug-ins on the acquisition board via the wiring harness, while the male high-voltage contacts of the male connector are connected in series with other standardized battery modules via the wiring harness. By designing the plug-in connectors on the standardized cell acquisition board and the power battery module, a large amount of acquisition wiring harnesses can be saved between the power battery module and the acquisition board, facilitating the matching of the power battery module and the acquisition board.

[0060] The high and low voltage integrated design of the quick-plug connector is used to improve the convenience of power battery module assembly and battery replacement, while also improving the versatility of standardized power battery modules. The insulating shell of the quick-plug connector has an anti-finger touch design, which improves the safety of standardized module installation operations.

[0061] The connection structure proposed in this embodiment improves universality by designing high and low voltage integrated quick-plug connectors and a standardized layout of the acquisition board, reduces the number of battery cell acquisition harnesses in the battery pack, reduces installation time, improves space utilization in the battery pack, and improves safety performance.

[0062] Example 2

[0063] This embodiment proposes a standardized method for connecting a power battery module to an acquisition board, including:

[0064] Multiple adjacent power battery modules and acquisition boards are connected via a connecting structure;

[0065] The connection structure includes a quick-plug connector and multiple wiring harnesses; the quick-plug connector includes a female connector and a male connector for plug-in connection; a female connector is provided at the front end of each power battery module; the acquisition board is a standardized battery cell acquisition board, including multiple plug-ins and multiple AFE battery cell acquisition chips, each plug-in corresponds to the battery cell and temperature sensor acquisition port of each AFE battery cell acquisition chip;

[0066] The female connector at the front end of the power battery module is plugged into the male connector, and the male connector is connected to the plug-in on the standardized battery cell collection board through a wiring harness.

[0067] Furthermore, the method further includes: connecting the communication input plug-in of the current acquisition board and the communication output plug-in of another acquisition board using a wiring harness to achieve the connection between the current acquisition board and the other acquisition board, connecting the acquisition boards in series through daisy chain communication, and connecting the acquisition board to the main board through daisy chain communication.

[0068] The steps involved in the above-mentioned Example 2 correspond to those in Example 1. For the specific implementation method, please refer to the relevant description section of Example 1. The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of protection of the present invention.

[0069] Although the above describes the specific embodiments of the present invention in conjunction with the accompanying drawings, it is not intended to limit the scope of protection of the present invention. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art on the basis of the technical solution of the present invention without any creative work are still within the scope of protection of the present invention.

Claims

1. A standardized power battery module and acquisition board connection structure, characterized in that: Includes quick-connect connectors and multiple wiring harnesses; The quick-plug connector includes a female connector and a male connector for plug-in connection; a female connector is provided at the front end of each power battery module; the acquisition board is a standardized battery cell acquisition board, including multiple plug-ins and multiple AFE battery cell acquisition chips, each plug-in corresponds to the battery cell and temperature sensor acquisition port of each AFE battery cell acquisition chip; The female connector at the front end of the power battery module is plugged into the male connector, and the male connector is connected to the plug-in on the standardized battery cell acquisition board through a wiring harness; The female connector is fixedly mounted on the front end of the power battery module housing. A female high-voltage contact and a female low-voltage contact are provided inside the female connector. The female high-voltage contact is connected to the busbar inside the power battery module, and the female low-voltage contact is connected to the collection harness inside the power battery module. The female connector includes an integrally formed female insulating housing, which is a rectangular parallelepiped structure with one side open, the opening facing outward, and the side corresponding to the opening embedded in the power battery module housing; The female end high voltage contact piece and the female end low voltage contact piece are both fixedly arranged in the female end insulating housing; The male connector is plugged into the female connector, and a male high-voltage contact and a male low-voltage contact are provided inside the male connector. The male high-voltage contact matches and corresponds to the female high-voltage contact, and the male low-voltage contact matches and corresponds to the female low-voltage contact; The male high-voltage contact of the male connector is connected in series with other standardized battery modules through a wiring harness; the male low-voltage contact of the male connector is connected to the plug-in on the standardized battery cell collection board through a wiring harness; The male-end connector comprises an insulating base plate, an insulating protection ring is fixedly arranged on the insulating base plate, and the male-end high-voltage contact piece and the male-end low-voltage contact piece are arranged in the insulating protection ring.

2. The standardized power battery module and acquisition board connection structure according to claim 1, characterized in that: A female end positioning hole is also fixedly provided in the female end insulating shell.

3. The standardized power battery module and acquisition board connection structure according to claim 2, characterized in that: The insulating bottom plate is also provided with male end positioning pins, which are arranged on both sides outside the insulating protection ring and match the female end positioning holes of the female end connector.

4. The standardized power battery module and acquisition board connection structure according to claim 1, characterized in that: The insulating bottom plate is also provided with a sealing rubber ring, which is arranged at the plug-in contact surface of the male connector and the female connector.

5. The standardized power battery module and acquisition board connection structure according to claim 1, characterized in that: Multiple plug-ins are sequentially arranged on one side of the acquisition board, and communication plug-ins are respectively arranged on the front and back sides of the multiple plug-ins, which are respectively a communication import plug-in and a communication export plug-in, which are used to be connected in series with other acquisition boards and the main board through daisy chain communication.

6. A standardized method for connecting a power battery module to an acquisition board, characterized in that: include: Multiple adjacent power battery modules and acquisition boards are connected via a connecting structure; The connection structure includes a quick-plug connector and multiple wiring harnesses; the quick-plug connector includes a female connector and a male connector for plug-in connection; a female connector is provided at the front end of each power battery module; the acquisition board is a standardized battery cell acquisition board, including multiple plug-ins and multiple AFE battery cell acquisition chips, each plug-in corresponds to the battery cell and temperature sensor acquisition port of each AFE battery cell acquisition chip; Plug the female connector at the front end of the power battery module into the male connector, and connect the male connector to the plug-in on the standardized battery cell collection board through a wiring harness; The female connector is fixedly mounted on the front end of the power battery module housing. A female high-voltage contact and a female low-voltage contact are provided inside the female connector. The female high-voltage contact is connected to the busbar inside the power battery module, and the female low-voltage contact is connected to the collection harness inside the power battery module. The female connector includes an integrally formed female insulating housing, which is a rectangular parallelepiped structure with one side open, the opening facing outward, and the side corresponding to the opening embedded in the power battery module housing; The female end high voltage contact piece and the female end low voltage contact piece are both fixedly arranged in the female end insulating housing; The male connector is plugged into the female connector, and a male high-voltage contact and a male low-voltage contact are provided inside the male connector. The male high-voltage contact matches and corresponds to the female high-voltage contact, and the male low-voltage contact matches and corresponds to the female low-voltage contact; The male high-voltage contact of the male connector is connected in series with other standardized battery modules through a wiring harness; the male low-voltage contact of the male connector is connected to the plug-in on the standardized battery cell collection board through a wiring harness; The male-end connector comprises an insulating base plate, an insulating protection ring is fixedly arranged on the insulating base plate, and the male-end high-voltage contact piece and the male-end low-voltage contact piece are arranged in the insulating protection ring.

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