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Sealed secondary battery manufacturing device and manufacturing method, and sealed secondary battery

A technology for secondary batteries and manufacturing devices, applied in secondary battery manufacturing, secondary batteries, air-tight storage batteries, etc., can solve problems such as electrolyte leakage and achieve high reliability.

Active Publication Date: 2015-08-19
KK TOSHIBA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this case, there is no problem as long as the sealing body is tightly attached to the sealing plate, but in the case of defective welding, the electrolyte may leak from the defective part

Method used

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  • Sealed secondary battery manufacturing device and manufacturing method, and sealed secondary battery
  • Sealed secondary battery manufacturing device and manufacturing method, and sealed secondary battery
  • Sealed secondary battery manufacturing device and manufacturing method, and sealed secondary battery

Examples

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no. 1 Embodiment approach

[0026] First, use Figure 1 to Figure 9 The first embodiment will be described.

[0027] figure 1 is a perspective view showing the appearance of the sealed secondary battery 10 according to the first embodiment, figure 2 It is a cross-sectional view showing a part of the sealed secondary battery 10 .

[0028] Such as figure 1 and figure 2 As shown, a sealed secondary battery 10 includes a flat box-shaped battery container 11 made of metal such as aluminum, and accommodates an electrode body 13 together with a non-aqueous electrolytic solution 12 in the battery container 11 . The battery container 11 has a container body 11A with an open upper end, and a rectangular plate-shaped sealing plate 11B that seals the opening of the container body 11A. The sealing plate 11B is placed on the end surface of the opening of the container main body 11A and welded over the entire circumference to seal the opening of the container main body 11A. Thereby, the container main body 11A ...

no. 2 Embodiment approach

[0080] Next, use Figure 10 and Figure 11 A second embodiment will be described. The second embodiment is an embodiment in which the structure near the laser transmission window 26 of the manufacturing apparatus 20 of the first embodiment is improved.

[0081] Figure 10 It is a structural diagram schematically showing the main part when the manufacturing apparatus 200 of the second embodiment is partially cut away from the front side and observed. image 3 Common parts are assigned the same symbols, and detailed description thereof will be omitted.

[0082] In the manufacturing apparatus 200 , a protection plate 81 made of a flat plate having substantially the same size as the laser transmission window 26 is fixed inside the laser transmission window 26 that seals the opening 24 a formed on the ceiling of the chamber 24 . On the protection board 81, such as Figure 12 As shown, four holes 82a, 82b, 82c, 82d are perforated. All of these holes 82 a to 82 d pass the laser...

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PUM

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Abstract

According to one embodiment, a manufacturing apparatus for a sealed secondary battery includes a chamber, pressure reduction unit, sealer transfer unit, and welding unit. The chamber accommodates therein a battery container injected with an electrolyte through an injection hole and is hermetically closed. The pressure reduction unit reduces pressure inside the chamber. The sealer transfer unit is configured to mount a sealer for sealing the injection hole on the injection hole of the battery container in the chamber decompressed by the pressure reduction unit. The welding unit is configured to laser-weld the sealer to the battery container by applying a laser beam to the peripheral edge portion of the sealer on the battery container through a laser transmission window formed in one surface of the chamber.

Description

[0001] This application claims the priority based on the prior Japanese Patent Application No. 2010-211380 for which it applied on September 21, 2010, and uses the entire content here as a reference. technical field [0002] The present invention relates to a sealed secondary battery, a manufacturing device and a manufacturing method thereof. Background technique [0003] In recent years, flat rectangular box-shaped sealed secondary batteries have been widely used in portable electronic devices and the like. Such a secondary battery is generally composed of a battery container having a flat rectangular box-like metal container main body with an open upper end, and a metal sealing plate welded to the container main body to close the opening of the main body. Furthermore, before welding the sealing plate to the container main body, the battery element is arranged in the container main body, and then the sealing plate is welded to the container main body to form a sealed batter...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/04H01M10/34H01M2/36H01M50/186H01M50/627H01M50/636
CPCH01M10/34H01M10/121Y02E60/126H01M2/365H01M10/0404H01M2/361H01M2/08Y02P70/50Y02E60/10H01M50/636H01M50/186H01M50/627H01M50/103
Inventor 松井智洋深津健太冈本浩典
Owner KK TOSHIBA