Locking structure for shell and top cover of battery

Abstract

The utility model discloses a locking structure for a shell and a top cover of a battery, and particularly relates to the technical field of the shell of the battery, the locking structure comprises the shell of the battery, a locking protection device is arranged at the upper end of the shell of the battery, and the locking protection device comprises a positioning assembly and a locking fixing assembly. Compared with the prior art, the locking structure for the shell and the top cover of the battery has the advantages that when the locking and fixing assembly is used, the positioning screw rod can be rotationally mounted in the first assembly thread bushing and the second assembly thread bushing by a worker; and after the first assembly threaded sleeve, the second assembly threaded sleeve and the positioning screw rod are installed, the lower end of a pressurizing positioning clamping plate arranged at the upper end of the positioning screw rod can conduct positioning and pressing work on the upper end of the top cover body, and the device conducts fixing and installing work through simple pressing, assembling and locking of the positioning assembly in cooperation with the locking and fixing assembly. The mounting efficiency of the whole device is greatly improved, and the problem of mounting deviation and instability caused by mounting instability is effectively avoided.

Description

Technical Field

[0001] This utility model relates to the field of battery casing technology, and more specifically, to a locking structure between the casing and the top cover of a battery. Background Technology

[0002] During the production and assembly of square power batteries, the aluminum casing and the top-covered cells undergo top cover press-fitting and top cover perimeter welding processes. Because the total height of the cells is slightly higher than the battery casing in some battery models during trial production, it is difficult to insert the cells into the casing when using the top cover insertion method. Manual casing insertion, which involves fixing the four corners of the top cover inside the casing, easily leads to incomplete closure between the top cover and the casing in the middle of the long side, resulting in an excessive gap and a bulge in the middle of the top cover. In this situation, when the casing is clamped by the peripheral welding fixture, the top cover is prone to lifting, failing the step inspection and preventing press-fitting and welding. Simultaneously, due to poor press-fitting of the battery itself, the long side springs open and lifts after clamping, causing pre-welding failure and resulting in unmelted single-sided welds, affecting production efficiency and quality. Utility Model Content

[0003] In order to overcome the above-mentioned defects of the prior art, the embodiments of this utility model provide a locking structure for the battery casing and top cover to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a locking structure for a battery casing and a top cover, comprising a battery casing, wherein a locking protection device is provided at the upper end of the battery casing, the locking protection device comprising: a positioning component and a locking fixing component, wherein the locking fixing component is disposed at the upper and lower ends of the positioning component, and the positioning component is disposed at the upper end of the battery casing.

[0005] In a preferred embodiment, the positioning component includes: a top cover body, a battery cover plate, a positioning groove, a positioning mounting block, a locking block, and a damping spring assembly, wherein the two ends of the damping spring assembly are respectively installed inside the positioning mounting block and the locking block.

[0006] In a preferred embodiment, the locking and fixing assembly includes: a pressure positioning clamp, a rotating pad, a rotating groove, a positioning screw, a first assembly threaded sleeve and a second assembly threaded sleeve, wherein the outer wall of the second assembly threaded sleeve is installed inside the upper and lower ends of the battery cover plate, and the outer wall of the first assembly threaded sleeve is installed inside the upper and lower ends of the top cover body.

[0007] In a preferred embodiment, the upper end of the positioning mounting block is mounted on the lower end of the top cover body, and the size of the positioning groove and the size of the positioning mounting block are adapted to the size of the locking block.

[0008] In a preferred embodiment, the positioning mounting block and the locking block are installed inside the positioning groove, and two sets of the positioning groove, the positioning mounting block, the locking block and the damping spring assembly are provided. The lower end of the battery cover is installed on the upper end of the battery casing.

[0009] In a preferred embodiment, the positioning screw is detachably mounted on the outer wall of the first and second assembled threaded sleeves, the upper end of the positioning screw is mounted on the lower end of the rotating pad, and the rotating groove is formed at both the upper and lower ends of the rotating pad.

[0010] In a preferred embodiment, the pressure positioning clamps are provided in three sets, and the inner sides of the three sets of pressure positioning clamps are respectively installed on the outer wall of the rotating pad, and the lower end of the pressure positioning clamps is attached to the upper end of the top cover body.

[0011] The technical effects and advantages of this utility model are as follows:

[0012] A locking structure for a battery casing and top cover, compared with the prior art, allows the locking and fixing component to be installed by the operator rotating the positioning screw into the first and second assembly threaded sleeves. After the first assembly threaded sleeve, the second assembly threaded sleeve, and the positioning screw are installed, the lower end of the pressure positioning clamp provided at the upper end of the positioning screw can perform positioning and pressing work on the upper end of the top cover body. This device uses the positioning component to simply press and assemble the locking and fixing component to perform fixed installation work, which greatly improves the installation efficiency of the entire device and effectively avoids the problem of unstable installation and instability caused by installation instability. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0014] Figure 2 This is a schematic diagram of the locking protection device of this utility model.

[0015] Figure 3 This is a schematic diagram of the positioning component structure of this utility model.

[0016] Figure 4 This is a schematic diagram of the locking and fixing component structure of this utility model.

[0017] The attached figures are labeled as follows: 1. Battery casing; 2. Locking protection device; 21. Positioning assembly; 211. Top cover body; 212. Positioning mounting block; 213. Locking block; 214. Damping spring assembly; 215. Battery cover plate; 216. Positioning groove; 22. Locking and fixing assembly; 221. Rotating pad; 222. Pressurized positioning clamp; 223. Rotating groove; 224. Positioning screw; 225. First assembly threaded sleeve; 226. Second assembly threaded sleeve. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] As attached Figure 1-4 As shown, this utility model provides a locking structure for the battery casing and top cover, including a battery casing 1, and a locking protection device 2 is provided at the upper end of the battery casing 1. The locking protection device 2 includes a positioning component 21 and a locking fixing component 22. The locking fixing component 22 is provided at the upper and lower ends of the positioning component 21, and the positioning component 21 is provided at the upper end of the battery casing 1.

[0020] The positioning assembly 21 includes: a top cover body 211, a battery cover plate 215, a positioning groove 216, a positioning mounting block 212, a locking block 213, and a damping spring assembly 214. The two ends of the damping spring assembly 214 are respectively installed inside the positioning mounting block 212 and the locking block 213. The upper end of the positioning mounting block 212 is installed at the lower end of the top cover body 211. The size of the positioning groove 216 is compatible with the size of the positioning mounting block 212 and the locking block 213. The positioning mounting block 212 and the locking block 213 are installed inside the positioning groove 216. There are two sets of the positioning groove 216, the positioning mounting block 212, the locking block 213, and the damping spring assembly 214. The lower end of the battery cover plate 215 is installed at the upper end of the battery casing 1.

[0021] The locking and fixing assembly 22 includes: a pressure positioning clamp 222, a rotating pad 221, a rotating groove 223, a positioning screw 224, a first assembly threaded sleeve 225, and a second assembly threaded sleeve 226. The outer wall of the second assembly threaded sleeve 226 is installed inside the upper and lower ends of the battery cover plate 215. The outer wall of the first assembly threaded sleeve 225 is installed inside the upper and lower ends of the top cover body 211. The positioning screw 224 is detachably installed on the outer walls of the first assembly threaded sleeve 225 and the second assembly threaded sleeve 226. The upper end of the positioning screw 224 is installed on the lower end of the rotating pad 221. The rotating groove 223 is opened at the upper and lower ends of the rotating pad 221. There are three sets of pressure positioning clamps 222, and the inner sides of the three sets of pressure positioning clamps 222 are respectively installed on the outer wall of the rotating pad 221. The lower end of the pressure positioning clamp 222 is attached to the upper end of the top cover body 211.

[0022] The specific implementation method is as follows: When using this utility model, the top cover body 211 needs to be aligned with the lower end of the positioning mounting block 212 and locking block 213 and the upper end of the positioning groove 216. After the upper end of the positioning groove 216 is aligned, the top cover body 211 is pressed down. After the top cover body 211 is pressed down, the positioning mounting block 212 and locking block 213 are moved down. After the positioning mounting block 212 and locking block 213 are moved down, they enter the positioning groove 216. After the positioning mounting block 212 and locking block 213 enter the inner side of the positioning groove 216, they will squeeze the damping spring assembly 214. After the damping spring assembly 214 is squeezed and retracted, the positioning mounting block 212 and locking block 213 can reduce their width and smoothly enter the positioning groove 216. After the positioning mounting block 212 and locking block 213 are in place, they unfold at the lower end inside the positioning groove 216. The locking operation is performed by unfolding the locking block 213. After the upper end of the battery cover 215 and the top cover body 211 are locked by a simple pressing action, the workers can avoid the problem of displacement of the upper end of the battery cover 215 and the top cover body 211 during subsequent fixed installation work, which further enhances the installation auxiliary stability of the entire device. When in use, the locking and fixing component 22 can be installed by the workers rotating the positioning screw 224 into the first assembly threaded sleeve 225 and the second assembly threaded sleeve 226. After the first assembly threaded sleeve 225, the second assembly threaded sleeve 226 and the positioning screw 224 are installed, the lower end of the pressure positioning clamp 222 set at the upper end of the positioning screw 224 can perform positioning and pressing work on the upper end of the top cover body 211. This device uses the positioning component 21 to simply press and assemble the locking and fixing component 22 for fixed installation work, which greatly improves the installation efficiency of the entire device and effectively avoids the problem of unstable installation caused by unstable installation.

[0023] The working principle of this utility model is as follows: When using this utility model, the top cover body 211 needs to be aligned with the upper end of the positioning groove 216 via the lower end positioning mounting block 212 and locking block 213. After the upper end of the positioning groove 216 is aligned, the top cover body 211 is pressed down. After the top cover body 211 is pressed down, the lower end positioning mounting block 212 and locking block 213 move down. After the positioning mounting block 212 and locking block 213 move down, they enter the positioning groove 216. After entering the inner side of the positioning groove 216, the positioning mounting block 212 and locking block 213 will compress the damping spring assembly 214. After the damping spring assembly 214 is compressed and retracted, the positioning mounting block... 212 and locking block 213 can reduce the width and smoothly enter the positioning groove 216. After the positioning mounting block 212 and locking block 213 are in place, they unfold at the lower end inside the positioning groove 216. Locking is performed by unfolding the locking block 213. After the upper end of the battery cover 215 and the top cover body 211 complete a simple compression locking operation, the staff can avoid the problem of displacement of the upper end of the battery cover 215 and the top cover body 211 when performing subsequent fixed installation work, which further enhances the installation auxiliary stability of the entire device. When using the locking and fixing component 22, the staff can rotate the positioning screw 224 to install it into the first assembly threaded sleeve 225 and the second assembly threaded sleeve 226.

[0024] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.

[0025] Secondly: The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

[0026] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A locking structure for a battery casing and a top cover, comprising a battery casing (1), characterized in that: The upper end of the battery casing (1) is provided with a locking protection device (2). The locking protection device (2) includes: a positioning component (21) and a locking and fixing component (22). The locking and fixing component (22) is disposed at the upper and lower ends of the positioning component (21), and the positioning component (21) is disposed at the upper end of the battery casing (1).

2. The locking structure between the battery casing and the top cover according to claim 1, characterized in that: The positioning component (21) includes: a top cover body (211), a battery cover plate (215), a positioning groove (216), a positioning mounting block (212), a locking block (213), and a damping spring assembly (214), with the two ends of the damping spring assembly (214) respectively installed inside the positioning mounting block (212) and the locking block (213).

3. The locking structure between the battery casing and the top cover according to claim 2, characterized in that: The locking and fixing assembly (22) includes: a pressure positioning clamp (222), a rotating pad (221), a rotating groove (223), a positioning screw (224), a first assembly threaded sleeve (225) and a second assembly threaded sleeve (226). The outer wall of the second assembly threaded sleeve (226) is installed inside the upper and lower ends of the battery cover plate (215), and the outer wall of the first assembly threaded sleeve (225) is installed inside the upper and lower ends of the top cover body (211).

4. The locking structure between the battery casing and the top cover according to claim 2, characterized in that: The upper end of the positioning mounting block (212) is installed at the lower end of the top cover body (211), and the size of the positioning groove (216) is compatible with the size of the positioning mounting block (212) and the locking block (213).

5. The locking structure between the battery casing and the top cover according to claim 2, characterized in that: The positioning mounting block (212) and the locking block (213) are installed inside the positioning groove (216). The positioning groove (216), the positioning mounting block (212), the locking block (213) and the damping spring group (214) are all provided in two sets. The lower end of the battery cover plate (215) is installed on the upper end of the battery casing (1).

6. The locking structure between the battery casing and the top cover according to claim 3, characterized in that: The positioning screw (224) is detachably installed on the outer wall of the first assembly threaded sleeve (225) and the second assembly threaded sleeve (226). The upper end of the positioning screw (224) is installed on the lower end of the rotating pad (221), and the rotating groove (223) is opened at the upper and lower ends of the rotating pad (221).

7. The locking structure between the battery casing and the top cover according to claim 3, characterized in that: The pressure positioning clamp (222) is provided in three sets, and the inner sides of the three sets of pressure positioning clamps (222) are respectively installed on the outer wall of the rotating pad (221). The lower end of the pressure positioning clamp (222) is attached to the upper end of the top cover body (211).

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