Waterproof structure of battery connecting copper bar

Abstract

The utility model relates to the field of battery energy storage systems, in particular to a waterproof structure of a battery connecting copper bar, which comprises a copper bar, two ends of the copper bar are sleeved with wire holders, the wire holders are provided with mounting holes connected with battery pack wiring terminals, the copper bar is coated with a thermoplastic pipe, and two ends of the thermoplastic pipe are coated on the wire holders. A plurality of annular protrusions arranged at intervals are arranged at the positions, corresponding to the wrapping positions of the thermoplastic pipe, of the wire holder, and protection devices are arranged on the outer sides of the two ends of the thermoplastic pipe. The protection device comprises an upper cover and a lower cover, and the upper cover and the lower cover are buckled together. The waterproof sealing performance of the connection position of the port of the thermoplastic pipe can be effectively improved, and meanwhile the protective device additionally arranged at the port of the thermoplastic pipe can be prevented from being collided and damaged during installation.

Description

Technical Field

[0001] This utility model relates to the field of battery energy storage systems, and in particular to a waterproof structure for battery connection copper busbars. Background Technology

[0002] In battery energy storage systems, battery packs are electrically connected via short copper busbars. The entire copper busbar and its connection to the battery pack terminals must be waterproofed and insulated. Figure 1 As shown, the current waterproofing and insulation treatment of copper busbars is as follows: terminal blocks 2 are fitted at both ends of the copper busbar 1, and mounting holes 201 for connecting to the battery pack terminals are opened on the terminal blocks 2. The entire copper busbar 1 is covered with a thermoplastic tube 3, with both ends of the thermoplastic tube 3 covering the terminal blocks 2. The existing waterproofing structure of the copper busbar has the following problems: the two ends of the thermoplastic tube 3 are close to the terminal blocks 2, making them susceptible to damage during installation; the ends of the thermoplastic tube and the covering surface of the terminal blocks 2 are flat, resulting in low waterproof sealing performance. Utility Model Content

[0003] Based on the above problems, the purpose of this utility model is to provide a waterproof structure for battery connection copper busbars. This utility model adopts the following technical solution:

[0004] This utility model provides a waterproof structure for a battery connection copper busbar, including a copper busbar with terminal blocks fitted at both ends. The terminal blocks have mounting holes for connecting to the battery pack terminals. A thermoplastic tube is wrapped around the copper busbar, with both ends of the thermoplastic tube covering the terminal blocks. The terminal blocks have multiple spaced annular protrusions corresponding to the positions covered by the thermoplastic tube. Protective devices are provided on the outer sides of both ends of the thermoplastic tube. The protective devices include an upper cover and a lower cover, which are fastened together.

[0005] Preferably, the protective device includes a flexible strip, one side of which is connected to the upper cover and the other side is connected to the lower cover. The opening sides of the upper cover and the lower cover are connected by a snap-fit ​​structure.

[0006] Preferably, the snap-fit ​​structure includes a snap hook and a snap groove, the snap hook being disposed on the upper cover and the snap groove being disposed on the lower cover.

[0007] Preferably, both the upper and lower covers have anti-detachment protrusions on their inner walls, which cooperate with a limiting ring, and the limiting ring is disposed on the terminal block.

[0008] Preferably, both the upper and lower ends of the mounting hole are provided with sealing rings.

[0009] Preferably, the upper and lower ports of the mounting hole are provided with multiple sealing rings, and the sealing rings are arranged in layers from the inside to the outside.

[0010] Compared with the prior art, the beneficial technical effects of this utility model are as follows:

[0011] This invention can effectively improve the waterproof sealing of the connection position of the thermoplastic tube port, and the protective device installed at the thermoplastic tube port can prevent it from being damaged by impact during installation. Attached Figure Description

[0012] The present invention will be further described below with reference to the accompanying drawings.

[0013] Figure 1 This is a cross-sectional view of the copper busbar waterproofing treatment in the background art;

[0014] Figure 2 This is a cross-sectional view of the waterproof structure of the battery connection copper busbar in Embodiment 1 of this utility model;

[0015] Figure 3 This is a schematic diagram of the waterproof structure of the battery connection copper busbar in Embodiment 1 of this utility model;

[0016] Figure 4 This is a schematic diagram of the protective device in Embodiment 1 of this utility model;

[0017] Figure 5 This is a schematic diagram of the installation of the waterproof structure of the battery connection copper busbar in Embodiment 1 of this utility model;

[0018] Figure 6 This is a schematic diagram of the arrangement of the sealing rings in Embodiment 2 of this utility model.

[0019] Explanation of reference numerals in the attached drawings: 1. Copper busbar; 2. Terminal block; 201. Mounting hole; 202. Annular protrusion; 203. Sealing ring; 3. Thermoplastic tube; 4. Protective device; 401. Upper cover; 402. Lower cover; 403. Flexible strip; 404. Snap-fit ​​structure; 404-1. Hook; 404-2. Slot; 405. Anti-detachment protrusion; 5. Battery pack terminal; 6. Bolt. Detailed Implementation

[0020] To make the technical problems, technical solutions and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0021] Example 1

[0022] like Figure 2 and 3As shown, this embodiment discloses a waterproof structure for a battery connection copper busbar, including a copper busbar 1, with terminal blocks 2 fitted at both ends of the copper busbar 1. The terminal blocks 2 have mounting holes 201 for connecting to the battery pack terminals 5. A thermoplastic tube 3 is wrapped around the copper busbar 1. The thermoplastic tube 3 shrinks when heated, and both ends of the thermoplastic tube 3 are wrapped around the terminal blocks 2. The terminal blocks 2 are provided with multiple spaced annular protrusions 202 corresponding to the positions covered by the thermoplastic tube 3. The annular protrusions 202 form a barrier function. The annular protrusions 202 cooperate with the thermoplastic tube 3 to improve the waterproof sealing of the ends of the thermoplastic tube 3.

[0023] Meanwhile, protective devices 4 are provided on the outer sides of both ends of the thermoplastic tube 3. The protective devices 4 provide protection for the ends of the thermoplastic tube 3. The protective devices 4 include an upper cover 401 and a lower cover 402, which are fastened together.

[0024] like Figure 4 As shown, in this embodiment, the protective device 4 includes a flexible strip 403. One side of the flexible strip 403 is connected to the upper cover 401, and the other side is connected to the lower cover 402. The upper cover 401 and the lower cover 402 are folded and fastened along the middle line of the flexible strip 403.

[0025] The opening sides of the upper cover 401 and the lower cover 402 are connected by a snap-fit ​​structure 404. In this embodiment, the snap-fit ​​structure 404 includes a hook 404-1 and a groove 404-2. The hook 404-1 is disposed on the upper cover 401, and the groove 404-2 is disposed on the lower cover 402. When the upper cover 401 and the lower cover 402 are fastened together, the hook 404-1 is engaged in the groove 404-2.

[0026] like Figure 2 and 4 As shown, both the upper cover 401 and the lower cover 402 have anti-detachment protrusions 405 on their inner walls. The anti-detachment protrusions 405 engage with the limiting ring 204, which is mounted on the terminal block 2. When the upper cover 401 and the lower cover 402 are fastened together, the anti-detachment protrusions 405 are positioned in the groove formed between the limiting ring 204 and the head of the terminal block 2, thereby preventing the protective device 4 from moving.

[0027] It should be noted that the terminal block 2 is made of flexible rubber and is fitted onto the copper busbar 1. Both the upper and lower ends of the terminal block 2 have mounting holes 201 that expose portions of the copper busbar 1. Figure 5 As shown, during installation, the connecting hole at the end of the copper busbar 1 is fixed to the metal terminal of the battery pack terminal 5 by bolt 6, the upper port of the mounting hole 201 of the terminal block 2 abuts against the head of the bolt 6, and the lower port of the mounting hole 201 abuts against the terminal block of the battery pack terminal 5.

[0028] In this embodiment, sealing rings 203 are provided at both the upper and lower ends of the mounting hole 201. The sealing rings 203 improve the sealing performance of the connection between the terminal block 2 and the bolt 6 and the battery pack terminal 5. Furthermore, a protective cover can be installed on the battery pack terminal 5. In this embodiment, a sealing ring 203 is provided at both the upper and lower ends of the mounting hole 201.

[0029] The structure of the protective cover and the battery pack terminal 5 has been disclosed in previously filed patents, such as patent application number CN202223116646.5. The terminal block 2, bolt 6, and battery pack terminal 5 are all prior art and will not be described in detail here.

[0030] Example 2

[0031] like Figure 6 As shown, in this embodiment, multiple sealing rings 203 are provided at both the upper and lower ends of the mounting hole 201, and each sealing ring 203 is arranged in a ring-like manner from the inside to the outside. The remaining structure in this embodiment is the same as in Embodiment 1.

[0032] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A waterproof structure for a battery connection copper busbar, comprising a copper busbar (1), wherein terminal blocks (2) are fitted at both ends of the copper busbar (1), the terminal blocks (2) having mounting holes (201) for connecting to battery pack terminals (5), and a thermoplastic tube (3) covering the copper busbar (1), the two ends of the thermoplastic tube (3) being covered on the terminal blocks (2), characterized in that: The terminal block (2) is provided with a plurality of spaced annular protrusions (202) corresponding to the position covered by the thermoplastic tube (3), and protective devices (4) are provided on the outer sides of both ends of the thermoplastic tube (3). The protective device (4) includes an upper cover (401) and a lower cover (402), which are fastened together.

2. The waterproof structure for battery connection copper busbars according to claim 1, characterized in that: The protective device (4) includes a flexible strip (403), one side of which is connected to the upper cover (401) and the other side is connected to the lower cover (402). The opening sides of the upper cover (401) and the lower cover (402) are connected by a snap-fit ​​structure (404).

3. The waterproof structure for battery connection copper busbars according to claim 2, characterized in that: The snap-fit ​​structure (404) includes a snap hook (404-1) and a snap groove (404-2). The snap hook (404-1) is disposed on the upper cover (401), and the snap groove (404-2) is disposed on the lower cover (402).

4. The waterproof structure for battery connection copper busbars according to claim 2, characterized in that: The inner walls of the upper cover (401) and the lower cover (402) are provided with anti-detachment protrusions (405), which are matched with the limiting ring (204) for limiting. The limiting ring (204) is provided on the terminal block (2).

5. The waterproof structure for battery connection copper busbars according to claim 1, characterized in that: The upper and lower ports of the mounting hole (201) are both provided with sealing rings (203).

6. The waterproof structure for battery connection copper busbars according to claim 5, characterized in that: The upper and lower ports of the mounting hole (201) are each provided with a plurality of sealing rings (203), and each sealing ring (203) is arranged in a ring-like manner from the inside to the outside.

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