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Aluminium Alloy Plate For Cell Box And Cell Box

A technology of aluminum alloy plates and battery boxes, which is applied to battery pack parts, circuits, electrical components, etc., can solve the adverse effects of conductivity and working voltage performance, the decrease of weld bead shape stability, and the increase of irregular weld bead incidence and other problems, to achieve the effect of excellent pulse laser weldability and excellent formability

Inactive Publication Date: 2012-04-04
KOBE STEEL LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in JISA3003 aluminum alloy, if the depth of penetration exceeds 0.25mm, the shape stability of the weld bead will be significantly reduced, and the incidence of irregular weld bead will increase sharply.
Depending on the situation, this irregular bead may cause penetration into the back of the material to be welded, causing problems that adversely affect performance such as electrical conductivity and operating voltage.

Method used

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  • Aluminium Alloy Plate For Cell Box And Cell Box
  • Aluminium Alloy Plate For Cell Box And Cell Box
  • Aluminium Alloy Plate For Cell Box And Cell Box

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 2

[0076][Preparation of test materials]

[0077] The aluminum alloys shown in Table 3 were subjected to the same manufacturing process as in Example 1 to obtain an aluminum alloy plate with a plate thickness of 10 mm. 【table 3】

[0078] mn

Cu

Mg

Si

Fe

Zn

Ti

B*

Al

Example 3

0.82

0.15

-

0.11

0.62

0.01

0.003

9.1

margin

Example 4

0.97

0.15

-

0.11

0.64

0.01

0.003

9.6

margin

Example 5

1.42

0.15

-

0.12

0.66

0.01

0.004

9.7

margin

Example 6

0.96

0.07

-

0.11

0.65

0.01

0.003

9.3

margin

Example 7

0.98

0.14

-

0.07

0.61

0.01

0.003

9.6

margin

Example 8

1.00

0.15

-

0.56

0.68

0.01

0.004

9.8

margin

...

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Abstract

When carrying out pulse laser welding over JISA3000 aluminium alloy plate for a cell box, the abnormal part (irregular weld pass) can be avoided. The aluminium alloy plate for a cell boxy comprises, by mass, 0.8 to 1.5% of Mn, 0.05 to 0.2% of Cu, 0.05 to 0.6% of Si, and 0.05 to 0.7% of Fe. According to the requirement, by mass, Zn is below 0.05%, Ti below 0.04, and B below 10 ppm. The remains are constituted by A1 and some unavoidable impurity. Even when the penetration depth of the laser is over 0.25mm, the irregular weld pass can still be avoided.

Description

technical field [0001] The present invention relates to an aluminum alloy plate for battery boxes used in lithium ion secondary battery boxes and the like, and the battery box. Background technique [0002] Lithium-ion secondary batteries are widely used as batteries for mobile phones, notebook personal computers, and the like. Among the materials for the case (hereinafter referred to as the battery box as appropriate) of the secondary battery, conventionally, for the purpose of reducing the size and weight of the battery, there are also materials used for forming the battery box (mainly the battery box body) The property (formability) is good, and the aluminum alloy material is used. [0003] In batteries for mobile phones and notebook computers, swelling of the battery becomes a problem. Therefore, in order to obtain high strength, an alloy in which a large amount of Cu and Mg is added using an Al—Mn-based alloy as a base material has been developed (see Patent Document ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/00H01M2/02B23K26/32H01M2/04
CPCY02E60/12Y02E60/10C22C21/00B23K26/32H01M50/147H01M50/119
Inventor 小林一德松本刚
Owner KOBE STEEL LTD
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