Battery fixing structure of lithium battery box

Abstract

A battery fixing structure of a lithium battery box comprises a box body and a box cover, a containing cavity is formed in the box body, a lithium battery pack is placed in the containing cavity, the lithium battery pack comprises a plurality of lithium battery modules arranged along the Y axis, each lithium battery module comprises a plurality of lithium batteries arranged along the X axis, and the positive electrode and the negative electrode of each lithium battery are located on the same straight line. The top of the containing cavity is provided with a pressing block, the pressing block is pressed between the positive electrode and the negative electrode of the lithium battery in the X-axis direction, and the connecting parts at the two ends of the pressing block extend upwards in the mode of being perpendicular to the abutting parts, so that the two ends of the pressing block can be fixed to the side wall of the box body through the connecting parts. Therefore, an extra installation position does not need to be reserved in the box body for fixing the pressing block, the occupied internal space is saved, the size of the box body is reduced, meanwhile, the upward extending length of the connecting part is smaller than 1 / 10 of the accommodating height, the pressing block cannot be higher than the box body when the pressing block abuts against the top of the lithium battery pack, and the space of the top is fully utilized.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium batteries, in particular to a battery fixing structure of a lithium battery box. Background Art

[0002] With the development of vehicle technology, electric vehicle technology has become more mature, so various low-speed battery vehicles have appeared in life, such as sightseeing cars, patrol cars, golf carts and other low-speed vehicles. The battery packs in these low-speed vehicles are usually powered by lithium battery packs. Different models will be equipped with different numbers of lithium batteries according to needs to meet usage requirements. In order to match different numbers of lithium battery packs, these lithium battery packs need to be placed in the battery box to ensure the safety of the battery and facilitate the loading and unloading of the battery.

[0003] In the existing battery box, such as the lithium battery box and battery pack disclosed in the Chinese patent with patent application number CN202321007379.X, it includes a box body, a receiving cavity is opened in the box body, the receiving cavity is used to receive the battery module, a positioning groove connected with the receiving cavity is formed in the box body, the positioning groove is used to position the battery module, and a step structure is formed on the inner wall of the receiving cavity adjacent to the opening of the positioning groove; the lithium battery box also includes a positioning fixing part and a pressing part, the positioning fixing part is located in the receiving cavity, the positioning fixing part is connected to the box body, the positioning fixing part and the step structure are used together to position and clamp the two sides of the battery module; the pressing part is located in the box body and connected to the box body, the pressing part is used to press and fix the top surface of the battery module, the structure is simple and the installation operation is relatively simple, so that the installation efficiency is high.

[0004] However, in this structure, the pressing and abutting part of the pressing piece is pressed and abutted against the battery module, and the connecting parts at both ends of the pressing piece are fixedly connected to the box to fix the battery module. The connecting parts and the box can be fixed by screwing, bonding or welding. However, no matter which method is used, it is necessary to reserve enough installation positions in the box to facilitate operation, and the installation positions need to be symmetrically arranged on both sides of the battery module. This will not only waste the space inside the box, but also increase the size of the box. When using the same model and the same number, a larger box requires a larger space to install the lithium battery box. Therefore, such a structure will cause the lithium battery box to lack market competitiveness. Utility Model Content

[0005] In order to overcome the deficiencies of the prior art, the utility model provides a battery fixing structure for a lithium battery box.

[0006] The technical solution adopted by the utility model to solve its technical problems is:

[0007] A battery fixing structure of a lithium battery box, comprising a box body and a box cover, wherein a receiving cavity is arranged in the box body, and the box cover is closed on the top of the box body to cover the receiving cavity, wherein a lithium battery pack is placed in the receiving cavity, wherein the lithium battery pack comprises a plurality of lithium battery modules arranged along the Y axis, wherein the lithium battery modules comprise a plurality of lithium batteries arranged along the X axis, wherein the positive and negative electrodes on each of the lithium batteries are on the same straight line, and the straight line faces the Y axis direction, wherein a plurality of pressing blocks corresponding to the number of the lithium battery modules are arranged on the top of the receiving cavity, wherein the pressing blocks are pressed between the positive and negative electrodes of each of the lithium batteries along the X axis direction, and wherein both ends of the pressing blocks are respectively fixed to the side walls of the box body by fasteners;

[0008] The pressing block includes a pressing portion in the middle for pressing the lithium battery and connecting portions extending vertically upward at both ends. The connecting portions are provided with fixing holes for fasteners to pass through. The pressing block is detachably mounted on the side wall of the box body through the connecting portions. The extending length of the connecting portions is less than 1 / 10 of the height of the accommodating cavity.

[0009] Furthermore, the connecting portion and the pressing portion are integrally formed, and reinforcing ribs for improving structural strength are provided between the connecting portion and the pressing portion.

[0010] In the utility model, the fasteners pass through the pressing block and the side wall of the box body in sequence from the inside to the outside to complete the fixing.

[0011] In the utility model, the top of the side wall of the box body is bent inwardly to form a fixing structure for fixing the pressure block, and the fixing structure includes a connecting plate connected to the top of the side wall and extending toward the inside of the box body, a fixing plate connected to the inside of the connecting plate and extending upward, and a support plate connected to the top of the fixing plate and extending outward. After the box cover is closed, the outer edges of the connecting plate, the fixing plate, the support plate and the box cover are surrounded to form a hidden cavity for covering the fasteners, and the fasteners pass through the connecting part and the fixing plate in sequence, and extend into the hidden cavity for fixing.

[0012] In the utility model, the height of the lithium battery pack is greater than the height of the accommodating cavity and less than the height of the side wall of the box body.

[0013] Furthermore, a clamping structure is provided at the top of the lithium battery at the position of the pressing block between the two electrodes, and a clamping hole is provided on the pressing block at the position corresponding to the clamping structure. A clamping part passes through the clamping hole and cooperates with the clamping structure. The clamping part connects the pressing block to the lithium battery module. The lithium battery module is taken out together with the pressing block, and the clamping part is removed during normal use.

[0014] Furthermore, a folded edge structure is extended to both sides of the top of the pressing block, and the folded edge structure is integrally formed with the pressing block.

[0015] Furthermore, the folding structure is provided with a plurality of notches for adapting to the mechanical wall.

[0016] The utility model has the following advantages and beneficial effects:

[0017] By extending the connecting parts at both ends of the pressing block upward perpendicularly to the pressing part, the two ends of the pressing block can be fixed on the side walls of the box through the connecting parts, so that there is no need to reserve additional installation positions in the box for fixing the pressing block, thereby saving the internal space and reducing the volume of the box. At the same time, the upward extension length of the connecting part is less than 1 / 10 of the height of the receiving strong, so that the pressing block will not be higher than the box when it is pressed on the top of the lithium battery pack, thereby making full use of the space on the top. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0019] Figure 1 Schematic diagram of the lithium battery box in this embodiment;

[0020] Figure 2 Schematic diagram of the composition of the lithium battery pack in this embodiment;

[0021] Figure 3 for Figure 2 A magnified image of area A;

[0022] Figure 4 Schematic diagram of the fixing structure in this embodiment. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model, but the utility model is not limited to the following embodiments.

[0024] like Figures 1 to 4As shown, the present embodiment discloses a battery fixing structure of a lithium battery box, including a box body 1 and a box cover 2, wherein the box body 1 is provided with a receiving cavity 10, and the box cover 2 is covered on the top of the box body 1 to cover the receiving cavity 10, and a lithium battery pack 3 is placed in the receiving cavity 10, specifically, the lithium battery pack 3 includes a plurality of lithium battery modules 30 arranged along the Y axis, and the lithium battery module 30 includes a plurality of lithium batteries 300 arranged along the X axis, and the positive and negative electrodes on each of the lithium batteries 300 are on the same straight line, and the straight line is oriented in the Y axis direction, and a plurality of pressing blocks 4 corresponding to the number of the lithium battery modules 30 are provided on the top of the receiving cavity 10, and the pressing blocks 4 are pressed tightly along the X axis direction. Between the positive and negative electrodes of each of the lithium batteries 300, the two ends of the pressing block 4 are respectively fixed to the side walls of the box body 1 by fasteners. Specifically, the pressing block 4 includes a pressing portion 40 in the middle for pressing the lithium battery 300 and connecting portions 41 extending vertically upward at both ends. The connecting portion 41 is provided with a fixing hole 42 for the fastener to pass through. The pressing block 4 is detachably mounted on the side wall of the box body 1 through the connecting portion 41. Preferably, the extension length of the connecting portion 41 is less than 1 / 10 of the height of the accommodating cavity 10. The connecting portion 41 and the pressing portion 40 are integrally formed, and a reinforcing rib 43 for improving the structural strength is also provided between the connecting portion 41 and the pressing portion 40.

[0025] In this embodiment, the fasteners pass through the pressing block 4 and the side wall of the box body 1 from the inside to the outside in sequence to complete the fixation. The fasteners can be screws or other accessories with a fastening effect.

[0026] Furthermore, in order to prevent the fasteners from being exposed on the outside of the box body 1, the top of the side wall of the box body 1 is bent inward to form a fixing structure 11 for fixing the pressing block 4, and the fixing structure 11 includes a connecting plate 110 connected to the top of the side wall and extending toward the inside of the box body 1, a fixing plate 111 connected to the inside of the connecting plate 110 and extending upward, and a support plate 112 connected to the top of the fixing plate 111 and extending outward. When the box cover 2 is closed, the connecting plate 110, the fixing plate 111, the support plate 112 and the outer edge of the box cover 2 are combined to form a hidden cavity 113 for covering the fasteners. The fasteners pass through the connecting portion 41 and the fixing plate 111 in sequence, and finally extend into the hidden cavity 113 for fixation.

[0027] In this embodiment, the height of the lithium battery pack 3 is greater than the height of the accommodating cavity 10 and is less than the height of the side wall of the box body 1. This structure can fully protect the lithium battery pack 3. However, since there is no fulcrum, the lithium battery 300 cannot be conveniently extracted when the lithium battery 300 needs to be replaced. Therefore, a clamping structure 301 is provided at the top of the lithium battery 300 at a position corresponding to the pressing block 4 between the two electrodes, and a clamping hole 400 is provided at a position corresponding to the clamping structure 301 on the pressing block 4. A clamping part passes through the clamping hole 400 to cooperate with the clamping structure 301. When the lithium battery 300 needs to be extracted, the pressing block 4 can be connected to the lithium battery module 30 through the clamping part. The lithium battery module 30 can be taken out together with the pressing block 4, and the clamping part can also be removed under normal use.

[0028] Furthermore, in order to make it easier to apply force to the pressing block 4, a folding structure 44 is provided on the top of the pressing block 4 to extend to both sides. The folding structure 44 is integrally formed with the pressing block 4 to improve the structural strength. When extracting the lithium battery 300, it is more convenient to apply force through the folding structure 44. Specifically, a plurality of notches are provided on the folding structure 44. The notches can enable the folding structure 44 to be adapted to be snapped onto the robot arm, so that the lithium battery 300 can be automatically removed or assembled by the robot arm.

[0029] The above contents described in this specification are merely examples of the present invention. Technicians in the technical field to which the present invention belongs can make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the contents of the present invention specification or exceed the scope defined by the claims, they should all fall within the protection scope of the present invention.

Claims

1. A battery fixing structure of a lithium battery box, comprising a box body (1) and a box cover (2), wherein the box body (1) is provided with a receiving cavity (10), the box cover (2) is fitted on the top of the box body (1) to cover the receiving cavity (10), a lithium battery pack (3) is placed in the receiving cavity (10), and the characteristics are: The lithium battery pack (3) comprises a plurality of lithium battery modules (30) arranged along the Y axis, the lithium battery modules (30) comprise a plurality of lithium batteries (300) arranged along the X axis, the positive and negative electrodes on each of the lithium batteries (300) are located on the same straight line, and the straight line faces the Y axis direction, a plurality of pressing blocks (4) corresponding to the number of the lithium battery modules (30) are provided on the top of the accommodating cavity (10), the pressing blocks (4) are pressed between the positive and negative electrodes of each of the lithium batteries (300) along the X axis direction, and the two ends of the pressing blocks (4) are respectively fixed to the side walls of the box body (1) by fasteners; The pressing block (4) comprises a pressing portion (40) in the middle for pressing the lithium battery (300) and connecting portions (41) extending vertically upward at both ends, the connecting portions (41) being provided with fixing holes (42) for fasteners to pass through, the pressing block (4) being detachably mounted on the side wall of the box body (1) via the connecting portions (41), and the extending length of the connecting portions (41) being less than 1 / 10 of the height of the accommodating cavity (10).

2. The battery fixing structure of a lithium battery box according to claim 1, characterized in that: The connecting portion (41) and the pressing portion (40) are integrally formed, and a reinforcing rib (43) for improving structural strength is provided between the connecting portion (41) and the pressing portion (40).

3. The battery fixing structure of a lithium battery box according to claim 1, characterized in that: The fasteners pass through the pressing block (4) and the side wall of the box body (1) in sequence from the inside to the outside to complete the fixation.

4. The battery fixing structure of a lithium battery box according to claim 3, characterized in that: The top of the side wall of the box body (1) is bent inwardly to form a fixing structure (11) for fixing the pressing block (4); the fixing structure (11) comprises a connecting plate (110) connected to the top of the side wall and extending toward the inside of the box body (1), a fixing plate (111) connected to the inside of the connecting plate (110) and extending upwardly, and a supporting plate (112) connected to the top of the fixing plate (111) and extending outwardly; when the box cover (2) is closed, the connecting plate (110), the fixing plate (111), the supporting plate (112) and the outer edge of the box cover (2) are combined to form a hidden cavity (113) for covering a fastener; the fastener passes through the connecting portion (41) and the fixing plate (111) in sequence and extends into the hidden cavity (113) for fixing.

5. The battery fixing structure of a lithium battery box according to claim 1, characterized in that: The height of the lithium battery pack (3) is greater than the height of the accommodating cavity (10) and less than the height of the side wall of the box body (1).

6. The battery fixing structure of a lithium battery box according to claim 5, characterized in that: A clamping structure (301) is provided at the top of the lithium battery (300) at a position between the two electrodes corresponding to the clamping block (4), and a clamping hole (400) is provided at a position on the clamping block (4) corresponding to the clamping structure (301). A clamping piece passes through the clamping hole (400) and cooperates with the clamping structure (301). The clamping piece connects the clamping block (4) and the lithium battery module (30). When the clamping block (4) is removed, the lithium battery module (30) is removed together. The clamping piece is removed during normal use.

7. The battery fixing structure of a lithium battery box according to claim 6, characterized in that: A folded edge structure (44) extends from the top of the pressing block (4) to both sides, and the folded edge structure (44) is integrally formed with the pressing block (4).

8. The battery fixing structure of a lithium battery box according to claim 7, characterized in that: The folding edge structure (44) is also provided with a plurality of notches for adapting to the machine wall.

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