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Battery module and manufacturing method thereof

A technology for battery modules and battery cells, applied in manufacturing tools, battery pack components, circuits, etc., can solve problems such as low resistance strength, reduced productivity, process errors, etc., to improve mechanical and physical properties, improve productivity, and improve quality. Effect

Pending Publication Date: 2022-07-26
SK ON CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, when the case is subjected to external impacts, the connection parts (welding parts) between the parts of the case are not strong enough to resist external impacts, so there are risks of easy damage or reduced sealing, and leakage of harmful substances that may be generated in the battery cells. Dangerous, and in the bonding process between housing parts, precise close-fit setting is required, so there is a problem that defects occur due to process errors and productivity decreases

Method used

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  • Battery module and manufacturing method thereof
  • Battery module and manufacturing method thereof
  • Battery module and manufacturing method thereof

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Embodiment Construction

[0062] Hereinafter, the battery module of the present invention will be described in detail with reference to the accompanying drawings. The accompanying drawings introduced below are provided examples in order to fully convey the idea of ​​the present invention to those skilled in the art. Therefore, the present invention is not limited to the drawings disclosed below and may be embodied in other forms, and the drawings disclosed below may be shown enlarged to clarify the idea of ​​the present invention. At this time, if the used technical and scientific terms are not defined as other meanings, they have meanings commonly understood by those of ordinary skill in the technical field to which the present invention belongs, and in the following description and drawings, omission may unnecessarily confuse Description of known functions and structures of the inventive subject matter.

[0063] Furthermore, the singular forms used in the specification and the appended claims may al...

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Abstract

The present invention relates to a battery module and a method of manufacturing the same, the battery module according to the present invention comprising: a case having an internal accommodation space; and a plurality of battery cells located in the internal accommodation space, in which the case includes a welded joint portion formed by welding a first base material of a first aluminum alloy and a second base material of a second aluminum alloy, with an imaginary plane connecting the outer surface of the first base material and the outer surface of the second base material in contact with the weld joint as a reference plane, at least a partial region of the bead surface of the weld joint is located inside the reference plane.

Description

technical field [0001] The present invention relates to a battery module and a method of manufacturing the same, and more particularly, to a battery module having improved welding strength and durability and a method of manufacturing the same. Background technique [0002] The module case has a structure in which case parts that can be assembled and joined to form a sealed inner accommodation space are joined to each other by laser welding, and pouch-type or prismatic battery cells connected in series / parallel to each other are located in the inner accommodation space. [0003] However, when the case is subjected to an external impact, the connection parts (welding parts) between the case parts are not highly resistant to the external impact, so there is a risk of easy damage or reduced sealing, and leakage of harmful substances that may be generated in the battery cells. Dangerous, and in the process of bonding between the housing parts, precise abutment setting is required...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M50/244H01M50/204H01M50/224H01M50/26B23K26/21B23K26/70B23K101/36
CPCH01M50/244H01M50/204H01M50/224H01M50/26B23K26/21B23K26/702B23K2101/36H01M50/242H01M50/209H01M50/211H01M50/222H01M50/276H01M50/169Y02E60/10H01M50/119H01M50/103H01M50/105B23K26/24H01M50/191
Inventor 郑会闵金浩然郑圭辰
Owner SK ON CO LTD