Forming method for battery box upper cover

A molding method and battery box technology, applied in molding tools, metal processing equipment, manufacturing tools, etc., can solve the problems of unqualified size matching, wrinkling and cracking of the upper cover of the battery box, etc., to meet the air tightness and avoid molding Quality and dimensional accuracy, avoiding the effect of large springback

Inactive Publication Date: 2021-04-16
上海赛科利汽车模具技术应用有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a method for forming the upper cover of the battery box, which is used to solve the problem of wrinkling, cracking, and large springback during the processing of the upper cover of the battery box in the prior art. and the problem of unqualified size matching

Method used

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  • Forming method for battery box upper cover
  • Forming method for battery box upper cover
  • Forming method for battery box upper cover

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Embodiment Construction

[0029] Embodiments of the present invention are described below through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation modes, and various modifications or changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention.

[0030] A method for forming the upper cover of a battery case, the specific structure of the upper cover of the battery case to be produced in this embodiment is shown in Figure 4 As shown, it has a convex hull 1 and a sealant mounting surface 7. The convex hull 1 includes a pressure relief valve mounting surface 9, which has a pressure relief valve mounting hole, and has a high-precision hole 8 on the sealant mounting surface 7. Inc...

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Abstract

The invention provides a forming method for a battery box upper cover. The forming method is characterized by comprising the following steps that (1), first-time drawing is performed on a sheet material to form a first piece, and the first piece is provided with a convex hull of a pressure release valve mounting surface; (2), second-time drawing is performed on the first piece to form a second piece, and the second piece is provided with a sealant mounting surface with a mounting hole; (3), trimming is performed on the second piece, and a pressure release valve mounting hole is roughly punched and formed in the pressure release valve mounting surface; (4), flanging is performed on the second piece, and the pressure release valve mounting hole is finely punched; and (5), other holes are punched, shaping is performed, and finally, the battery box upper cover is formed. By means of the forming method for the battery box upper cover, the problems in the prior art that in the battery box upper cover machining process, wrinkling and cracking are prone to appearing, resilience is large, and size matching is unqualified are solved.

Description

technical field [0001] The invention relates to the field of battery box manufacturing, in particular to a method for forming an upper cover of a battery box. Background technique [0002] Among the components of the aluminum battery box assembly, the upper cover of the battery box is one of the key parts. At present, the upper cover is generally made of aluminum alloy. In order to meet the airtightness of the battery pack, the sealing matching surface of the shell stamping part and The pressure relief valve has extremely high requirements on the size of the sealing surface. In view of the problems such as easy wrinkling and cracking, large springback and difficult control during the forming process of aluminum sheet materials, how to obtain high-quality products through good technological means is a challenge and difficult problem currently facing. Contents of the invention [0003] In view of the above-mentioned shortcomings of the prior art, the purpose of the present ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D35/00B21D22/22B21D37/10
Inventor 李玉强田华张举徐伟检魏德礼
Owner 上海赛科利汽车模具技术应用有限公司
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