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Square battery fixing structure and using method thereof

A fixed structure, square battery technology, applied in the direction of structural parts, battery pack parts, circuits, etc., can solve the problems of battery installation accuracy requirements, insufficient precision of sheet metal shells, tolerance accumulation, etc., to achieve enhanced strength, mechanical High machining accuracy, reducing the effect of matching surfaces

Active Publication Date: 2020-07-03
ZHEJIANG LEAPMOTOR TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the problems of high cost of aluminum alloy shells in the prior art, insufficient precision of sheet metal shells, easy accumulation of tolerances, and failure to meet the requirements of battery installation accuracy, and provide a square battery fixing structure, which is simple in structure and light in weight. Quantification, low cost, easy generalization, can effectively absorb the tolerance caused by sheet metal forming and welding and meet the accuracy requirements of battery module installation

Method used

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  • Square battery fixing structure and using method thereof
  • Square battery fixing structure and using method thereof
  • Square battery fixing structure and using method thereof

Examples

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Effect test

Embodiment 1

[0041] Such as figure 1 , figure 2 In the shown embodiment 1, a square battery fixing structure includes a first fixing part 1 made of an aluminum alloy profile and a second fixing part 2 of a sheet metal part. The long bolt 3 of the fixing part and the short bolt 4 of the short fixing part. Such as Figure 4 As shown, the cross-section of the first fixing member 1 is L-shaped horizontally, including two stepped structures, wherein the higher stepped structure is the battery matching part, and the shape of the battery matching part is adapted to the shape of the bottom installation structure of the battery module 6, and the battery A number of battery module installation holes 11 are longitudinally opened on the matching part, and the holes are screw holes, which are adapted to the long bolts 3; the lower step structure is the fixing part, and the fixing part is longitudinally opened with a through hole with a diameter larger than the short bolt 4 12. The second fixing pa...

Embodiment 2

[0044] Such as Figure 5 In the shown embodiment 2, a square battery fixing structure includes a first fixing part 1 made of aluminum alloy profiles, a second fixing part 2 of a sheet metal part, long bolts 3 , short bolts 4 and shock absorbing parts 15 . Its structure is roughly the same as that of Embodiment 1, the difference is that two card slots 16 are opened on the first fixing member 1, and the card slots 16 are located on both sides of the battery module installation hole 11, and the card slots 16 are carded with long Bar-shaped rubber shock absorber 15, such as Figure 6 As shown, the section of the shock absorber 15 is T-shaped, and includes an upper horizontal shock absorbing portion 151 and a lower longitudinal snap-in portion 152. Both sides of the snap-in portion 152 are convex arc surfaces, and the snap-in portion 152 snaps When in the draw-in groove 16, the arc surface is pressed inwards to withstand the draw-in groove 16 groove walls. Such as Figure 7 As s...

Embodiment 3

[0047] A method for using a square battery fixing structure. First, the second fixing member is spot-welded in the battery lower case 5, wherein the two sides are welded to the battery lower case 5 through the side connection part and the bottom connection part, and the second fixing part in the middle is welded to the battery lower case 5. 2. The fixing part is welded with the lower case of the battery through the bottom connecting part;

[0048] Use tooling to place the four first fixing parts in parallel and position them on the second fixing part. Firstly, the positioning pins are inserted into the main positioning hole, the auxiliary positioning hole and the positioning via holes for positioning, and then the first fixing parts are fixed on the second fixing part through short bolts. Two fixing parts, such as figure 2 shown;

[0049] Manually install the individual battery modules on the first fixing part in sequence through long bolts, and after the two rows are assemb...

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Abstract

The invention discloses a square battery fixing structure and a using method thereof. The fixing device comprises a first fixing piece and a second fixing piece which are arranged in a split mode. Thesecond fixing piece is a sheet metal part; the first fixing piece is an aluminum alloy piece; the first fixing piece comprises a fixing part and a battery matching part; the shape of the battery matching part is matched with that of the bottom of the mounting structure of the battery module; the battery matching part is fixedly connected with the battery module through a long fixing piece, a viahole is formed in the fixing part, a fixing hole corresponding to the via hole is formed in one surface, far away from the first fixing piece, of the second fixing piece, a short fixing piece is arranged on the first fixing piece, and the short fixing piece penetrates through the via hole and is tightly matched with the fixing hole. The structure is simple, light in weight, low in cost, easy to universalize, capable of effectively absorbing tolerance caused by forming and welding of sheet metal parts and meeting the precision requirement of battery module installation, and high in assembly flexibility.

Description

technical field [0001] The invention relates to the field of automotive power batteries, in particular to a square battery fixing structure and a method for using the same. Background technique [0002] How to reduce the production cost of electric vehicle battery packs is an issue of great concern in the field of electric vehicles at present. Through comparative calculations, the production cost of sheet metal battery pack shells is about 1 / 2 or more lower than that of aluminum alloy battery pack shells. However, the sheet metal battery pack shell is not as precise as the aluminum alloy, and it needs to be welded in multiple passes, which is easy to cause tolerance accumulation, and the fixed point of the sheet metal battery pack needs to be separately convex-welded as a standard part, which requires a larger Tolerance zone and mounting structure to absorb manufacturing tolerances. At present, prismatic batteries have tended to be standardized. In order to save the space o...

Claims

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Application Information

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IPC IPC(8): H01M2/10
CPCH01M50/20Y02E60/10
Inventor 丁为广郭大洲张宏伟杨治会王琤张伟
Owner ZHEJIANG LEAPMOTOR TECH CO LTD
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