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Quadrangular cell case for vehicle cell and method for manufacturing same

A prismatic battery, vehicle battery technology, applied in small-sized batteries/battery packs, large-sized batteries/battery packs, batteries, etc., can solve the problems of unstable sealing welding and unstable weld bead shape.

Inactive Publication Date: 2017-02-22
KOBE STEEL LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, it is difficult to heat locally, and in order to melt it, it is necessary to supply much more heat than steel, which becomes a major factor that makes the above-mentioned seal welding unstable and unstable bead shape.

Method used

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  • Quadrangular cell case for vehicle cell and method for manufacturing same
  • Quadrangular cell case for vehicle cell and method for manufacturing same
  • Quadrangular cell case for vehicle cell and method for manufacturing same

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Embodiment Construction

[0033] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings. In addition, in this specification and drawing, the same code|symbol is attached|subjected to the component which has substantially the same functional structure, and repeated description is abbreviate|omitted.

[0034] The basic structure of the square battery case:

[0035] Figure 1~3 One form of the prismatic battery case of the present invention is shown. The term “prismatic battery case” in the present invention refers to a battery case made of aluminum alloy that has a bottom, a side wall, and an opening, and has a rectangular cross-sectional shape.

[0036] exist Figure 1~3 In, as a premise, the rectangular battery case 1 is used as an on-vehicle battery. That is, a plurality of battery cases 1 are arranged side by side and assembled into a module for use. Therefore, in terms of space efficiency, a flat and thin aluminum alloy battery cas...

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Abstract

The present invention is a quadrangular cell case 1 for a vehicle cell, wherein a bottom part 6, lateral walls 2, 3, 4, 5, and an opening part 7 are integrally formed from one sheet of an aluminum alloy plate into a case that has each of these parts and is rectangular in transverse cross-section; and, before a lid is seal-welded to the opening 7, upper portions 2c, 3c, 4c, 5c of the lateral walls 2, 3, 4, 5 to be welded are locally increased in thickness so as to protrude into the cell case. The quadrangular cell case 1 for a vehicle cell is made of aluminum alloy, and it is possible to form a bead configuration that has stabilized during seal-welding, and to form sound weld portions.

Description

technical field [0001] The present invention relates to a rectangular battery case for an on-vehicle battery in which a plurality of battery cases are arranged in parallel and used as a module, and a method for manufacturing the same. Background technique [0002] Conventionally, Li-ion batteries have been mainly used in the field of mobile devices such as mobile phones and notebook computers, but in recent years, they have been used in HV vehicles, plug-in hybrid vehicles, and electric vehicles for automobiles (vehicle use). [0003] These Li-ion batteries for automobiles require a large amount of electric power, so a plurality of battery cases are arranged side by side in a limited vehicle space, and assembled into a module for storage. Therefore, it is important to adopt a shape that is easy to be aligned with each other, has a good space effect, has high mounting efficiency, has excellent heat dissipation performance, and avoids an excessive temperature rise. [0004] T...

Claims

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Application Information

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IPC IPC(8): H01M2/02B21D51/26
CPCY02E60/10B21D51/26H01M2220/20Y02T10/70H01M50/10H01M50/103
Inventor 小西晴之加岛宽子
Owner KOBE STEEL LTD
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