An output pole protection device for a battery module

Abstract

The utility model relates to battery module technical field, and disclose a kind of output pole protection device of battery module, comprising: the lower backplate and upper cover plate of mutual cover can;Locking structure, locking structure includes bead, slot, thrust groove and dog, bead is fixedly connected with upper cover plate, the sidewall of lower backplate is set slot, bead can be inserted into bead, dog is fixedly connected with lower backplate, upper cover plate sets thrust groove, the synergistic effect of sliding insertion and the locking of elastic dog is realized, the quick assembly and reliable fixing of upper cover plate and lower backplate are realized, the precision cooperation of bead and slot ensures the accurate guidance and initial positioning of upper cover plate in horizontal direction, and the clamping of elastic dog and thrust groove forms firm locking in vertical direction, this kind of " first orientation, then locking " mechanism, not only assembly process is smooth, hand feeling is clear, and effectively resist that vibration can lead to loosening, greatly improve maintenance efficiency and connection reliability.

Description

Technical Field

[0001] This utility model relates to the field of battery module technology, and in particular to an output electrode protection device for a battery module. Background Technology

[0002] In lithium-ion battery modules, the output electrode (positive and negative electrode) is a key component for energy transfer between the cell and the external circuit. Its safety and reliability are directly related to the stable operation of the entire battery system.

[0003] A search revealed a prior art terminal protection device for a battery module (publication number: CN209822775U), comprising a base, a bottom, and a side plate connected to the periphery of the bottom. The side plate and the bottom together form a receiving cavity. The side plate has an input port for the output electrode to pass through, and the input port communicates with the receiving cavity. The side plate also has a connection port, which communicates with the receiving cavity, allowing external electrical connectors to pass through the connection port and connect to the output electrode. The connection port is equipped with a protective plate, which is detachably fitted onto the connection port. The connection between the protective cover and the base often relies on simple clips or screws for fixing, which is inconvenient to install and remove, inefficient when maintenance or replacement is required, and may even damage components. Battery modules are susceptible to vibration and impact during transportation or use. Existing designs often lack multi-directional limiting and are difficult to effectively resist mechanical stress in various directions. If there is looseness between the output electrode and the protection device, the connection point may be stressed, leading to poor conductivity or breakage. The comprehensiveness of insulation protection also has room for improvement.

[0004] Therefore, we propose an output electrode protection device for battery modules. Utility Model Content

[0005] The present invention mainly addresses the technical problem of insufficient support orientation of the electrodes mentioned above, and provides an output electrode protection device for a battery module.

[0006] To achieve the above objectives, this utility model adopts the following technical solution: an output electrode protection device for a battery module, comprising:

[0007] A lower support plate 11 and an upper cover plate 12 that can overlap each other, wherein the lower support plate 11 is fixedly connected to an end plate 10;

[0008] A locking structure is provided between the lower support plate 11 and the upper cover plate 12 for limiting the movement. The locking structure includes a rib 13, a slot 14, a thrust groove 20, and a claw 21. The rib 13 is fixedly connected to the upper cover plate 12. The slot 14 is provided on the side wall of the lower support plate 11, and the rib 13 can be inserted into the slot 14. The claw 21 is fixedly connected to the lower support plate 11. The thrust groove 20 is provided on the upper cover plate 12, and the claw 21 can deform and engage in the thrust groove 20 to restrict the sliding of the upper cover plate 12.

[0009] In a preferred embodiment of this utility model, the end plate 10 forms a rectangular block, and a protective cavity 22 is provided on the top of the end plate 10. An insulating plate is installed inside the protective cavity 22, and another identical insulating plate is fixedly installed on the bottom of the upper cover plate 12. The two insulating plates can form a clamping channel.

[0010] In a preferred embodiment of the present invention, the upper cover plate 12 is formed into a U-shaped plate, and a rib 13 is provided on each of the two opposite inner walls of the upper cover plate 12. The rib 13 is integrally formed with the upper cover plate 12.

[0011] In a preferred embodiment of this utility model, the rib 13 is a rectangular column, the slot 14 forms a rectangular groove that fits the rib 13 with a clearance, and a slot 14 is provided on each side of the lower support plate 11.

[0012] In a preferred embodiment of this utility model, the end plate 10 is fixedly installed at the bottom of the lower support plate 11, the end plate 10 has symmetrically opened mounting holes, and the top of the end plate 10 has several cavities for buffering.

[0013] As a preferred embodiment of the present invention, a claw 21 is installed on each side of the lower support plate 11. The claw 21 is a deformable plate, and the end of the claw 21 is fixedly connected to the side wall of the lower support plate 11. The top surface of the claw 21 is provided with an integrally formed locking block.

[0014] In a preferred embodiment of this utility model, the thrust groove 20 is a rectangular groove, and the thrust groove 20 is close to the front end of the upper cover plate 12. When the upper cover plate 12 and the lower support plate 11 are closed, the thrust groove 20 is located directly above the claw 21.

[0015] This utility model provides an output terminal protection device for a battery module, which has the following beneficial effects:

[0016] 1. This battery module output electrode protection device achieves rapid assembly and reliable fixation of the upper cover and lower support plate through the synergistic action of sliding insertion and elastic claw locking. The precise cooperation between the rib and the slot ensures accurate guidance and initial positioning of the upper cover plate in the horizontal direction, while the engagement of the elastic claw and the thrust groove forms a firm lock in the vertical direction. This "guide first, lock later" mechanism not only ensures a smooth assembly process and clear tactile feedback (accompanied by a "click" sound indicating that it is in place), but also effectively resists loosening that may be caused by vibration, greatly improving maintenance efficiency and connection reliability.

[0017] 2. This battery module output electrode protection device, through the combination of rib-slot and claw-thrust groove, forms a multi-directional limiting of the output electrode, achieving comprehensive protection. This structure can effectively limit the relative movement of the upper cover plate and the lower support plate in multiple directions such as horizontal and vertical, ensuring that the output electrode is stably constrained in the clamping channel formed by the upper and lower insulating plates. This significantly reduces the risk of the output electrode loosening, deformation or connection failure due to external impact or vibration, providing excellent mechanical protection for the output electrode, thereby improving the overall mechanical stability of the battery module.

[0018] 3. This battery module output electrode protection device, through modular design and the application of insulating materials, takes into account both electrical safety and maintenance convenience. The clamping channel formed by the upper and lower insulating plates provides reliable insulation isolation for the output electrode, effectively preventing short circuits and accidental electric shock. At the same time, the design of the quick-separating upper cover plate and lower support plate means that when it is necessary to inspect or replace the output electrode, it is not necessary to disassemble the entire battery module, simplifying the maintenance process and reducing maintenance costs and time. Attached Figure Description

[0019] Figure 1 This is a perspective view of the battery module of this utility model;

[0020] Figure 2 A perspective view of the battery module assembly, including the lower support and upper cover plate of this utility model.

[0021] Figure 3 This is a perspective view of the output electrode protection device of the battery module of this utility model;

[0022] Figure 4 The top cover of this utility model is three-dimensional;

[0023] Figure 5 This is a perspective view of the lower support of this utility model.

[0024] Legend: 10. End plate; 11. Lower support plate; 12. Upper cover plate; 13. Rib; 14. Slot; 20. Thrust groove; 21. Claw; 22. Protective cavity. Detailed Implementation

[0025] An output terminal protection device for a battery module, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, it includes:

[0026] A lower support plate 11 and an upper cover plate 12 that can overlap each other, with an end plate 10 fixedly connected to the lower support plate 11;

[0027] A locking structure is provided between the lower support plate 11 and the upper cover plate 12 for limiting movement. The locking structure includes a rib 13, a slot 14, a thrust groove 20, and a claw 21. The rib 13 is fixedly connected to the upper cover plate 12. The slot 14 is provided on the side wall of the lower support plate 11, and the rib 13 can be inserted into it. The claw 21 is fixedly connected to the lower support plate 11. The upper cover plate 12 has a thrust groove 20, and the claw 21 can deform and engage with the thrust groove 20 to restrict the sliding of the upper cover plate 12. The end plate 10 forms a rectangular block, and a protective cavity 22 is provided on the top of the end plate 10. An insulating material is installed in the protective cavity 22. The bottom of the upper cover plate 12 is fixedly installed with another identical insulating plate. The two insulating plates can form a clamping channel. The upper cover plate 12 is a plate with a U-shaped cross section. A rib 13 is provided on each of the inner walls of the opposite sides of the upper cover plate 12. The rib 13 is integrally formed with the upper cover plate 12. The rib 13 is a rectangular column. The slot 14 forms a rectangular groove that fits the rib 13 with a clearance. A slot 14 is opened on each side of the lower support plate 11. The end plate 10 is fixedly installed on the bottom of the lower support plate 11. The end plate 10 is symmetrically provided with mounting holes. The top of the end plate 10 is provided with several cavities for buffering.

[0028] In this solution, the upper cover plate 12 is placed on top of the lower support plate 11, and the end plate 10 is locked and fixed to the outer shell of the battery pack with bolts. Since the electrode protrudes from the outer shell, the lower support plate 11 is located below the electrode, and the upper cover plate 12 is located above the electrode. The upper cover plate 12 is pushed horizontally, and the protruding rib 13 is inserted into the slot 14. The upper cover plate 12 can be locked by the engagement of the claw 21 and the thrust groove 20. The electrode is limited in the protective cavity 22 and protected by the two insulating plates. At this time, it has support and limitation in the horizontal and vertical directions of the motor, the protection is more comprehensive, and the electrode is not easy to deform.

[0029] like Figure 4 and Figure 5 As shown, a claw 21 is installed on each side of the lower support plate 11. The claw 21 is a deformable plate. The end of the claw 21 is fixedly connected to the side wall of the lower support plate 11. The top surface of the claw 21 is provided with an integrally formed locking block. The thrust groove 20 is a rectangular groove. The thrust groove 20 is close to the front end of the upper cover plate 12. When the upper cover plate 12 and the lower support plate 11 are closed, the thrust groove 20 is located directly above the claw 21.

[0030] As a supplement to the above solution, the claw 21 extends obliquely towards the top of the lower support plate 11. The claw 21 can be combined with the lower support plate 11 by injection molding. The claw 21 is made of spring steel or plastic. As the upper cover plate 12 is horizontally inserted, the thrust groove 20 gradually moves to the top of the claw 21. The elastic potential energy of the claw 21 causes the block to be engaged in the thrust groove 20, thereby limiting and locking the upper cover plate 12. At the same time, the claw 21 being engaged in the thrust groove 20 will also be accompanied by a clicking sound to indicate that the upper cover plate 12 and the end plate 10 have been properly closed.

[0031] The working principle of this utility model is as follows: The operator initially places the upper cover plate 12 above the lower support plate 11, which is fixed to the end plate 10. The protruding rib 13 on the inner side of the upper cover plate 12 is initially aligned with the slot 14 on the side wall of the lower support plate 11, providing a guiding foundation for subsequent precise sliding. The upper cover plate 12 is pushed horizontally so that the protruding rib 13 on it smoothly inserts into the slot 14 of the lower support plate 11. This process ensures that the relative positions of the upper cover plate 12 and the lower support plate 11 are accurate. At the same time, the output terminal of the battery module is completely accommodated in the closed insulating space clamping channel formed by the insulating plate in the protective cavity 22 of the lower support plate and the insulating plate at the bottom of the upper cover plate 12. This structure ensures that the output terminal Sufficient electrical clearance and creepage distance are provided between the upper cover plate 12 and the external metal end plate 10 and surrounding components, achieving reliable insulation protection. As the upper cover plate 12 slides to the predetermined position, the thrust groove 20 on it moves exactly above the elastic claws 21 on both sides of the lower support plate 11. Under the action of its own elastic restoring force, the claws 21 quickly spring upward, so that the locking blocks at their ends are accurately embedded in the thrust groove 20 of the upper cover plate 12. This action forms a mechanical lock in the vertical direction, effectively preventing the upper cover plate 12 from accidentally retracting or loosening under vibration. When the claws 21 are engaged in the thrust groove 20, they are usually accompanied by a clear "click" sound, providing the operator with clear auditory and tactile feedback on the assembly being in place.

[0032] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A battery module output terminal protection device, characterized in that, include: A lower support plate (11) and an upper cover plate (12) that can be covered each other, wherein the lower support plate (11) is fixedly connected to an end plate (10); A locking structure is provided between the lower support plate (11) and the upper cover plate (12) for limiting the movement. The locking structure includes a rib (13), a slot (14), a thrust groove (20), and a claw (21). The rib (13) is fixedly connected to the upper cover plate (12). The side wall of the lower support plate (11) has a slot (14) and the rib (13) can be inserted into the rib (13). The claw (21) is fixedly connected to the lower support plate (11). The upper cover plate (12) has a thrust groove (20) and the claw (21) can deform and be inserted into the thrust groove (20) to restrict the sliding of the upper cover plate (12).

2. The output pole protection device of a battery module according to claim 1, characterized by: The end plate (10) forms a rectangular block, and a protective cavity (22) is provided on the top of the end plate (10). An insulating plate is installed in the protective cavity (22), and another identical insulating plate is fixedly installed on the bottom of the upper cover plate (12). The two insulating plates can form a clamping channel.

3. The output pole protection device of a battery module according to claim 1, characterized by: The upper cover plate (12) is formed into a U-shaped plate. A rib (13) is provided on each of the two inner walls opposite to each other on the upper cover plate (12). The rib (13) is integrally formed with the upper cover plate (12).

4. The output pole protection device of the battery module according to claim 1, characterized by: The rib (13) is a rectangular column, and the slot (14) forms a rectangular groove that fits the rib (13) with a clearance. A slot (14) is opened on each side of the lower support plate (11).

5. The output pole protection device of the battery module according to claim 1, characterized by: The end plate (10) is fixedly installed at the bottom of the lower support plate (11). The end plate (10) has symmetrical mounting holes and several cavities for buffering are provided on the top of the end plate (10).

6. The output pole protection device of the battery module according to claim 1, characterized by: A claw (21) is installed on each side of the lower support plate (11). The claw (21) is a deformable plate. The end of the claw (21) is fixedly connected to the side wall of the lower support plate (11). The top surface of the claw (21) is provided with an integrally formed locking block.

7. The output pole protection device of a battery module according to claim 1, characterized by: The thrust groove (20) is a rectangular groove. The thrust groove (20) is close to the front end of the upper cover plate (12). When the upper cover plate (12) and the lower support plate (11) are closed, the thrust groove (20) is located directly above the claw (21).

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