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Welding needle for bottom welding of cylindrical 18650 lithium ion battery

A lithium ion, welding pin technology, applied in welding/welding/cutting items, welding media, welding equipment, etc., to achieve the effect of good welding effect, large cross-sectional area, and improved service life

Inactive Publication Date: 2016-09-28
JIUJIANG XUNTONG NEW ENERGY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Aiming at the above-mentioned technical problems in the related art, the present invention proposes a welding needle for welding the bottom of cylindrical 18650 lithium-ion batteries, which can improve the bottom welding effect and the life of welding needles in the production and manufacture of cylindrical 18650 lithium-ion batteries, so as to overcome the current problems. There are above-mentioned deficiencies that solder pins exist

Method used

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  • Welding needle for bottom welding of cylindrical 18650 lithium ion battery
  • Welding needle for bottom welding of cylindrical 18650 lithium ion battery

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Embodiment Construction

[0017] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments of the present invention belong to the protection scope of the present invention.

[0018] like figure 1 and figure 2 As shown, a welding needle for welding the bottom of a cylindrical 18650 lithium-ion battery according to an embodiment of the present invention includes a welding needle body 2, one end of the welding needle body 2 is welded with a welding needle top cover 1, and the welding needle body 2 The other end is connected with the welding pin head 3.

[0019] Both the welding needle top cover 1 and the welding needle body 2 are made of...

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Abstract

The invention discloses a welding needle for bottom welding of a cylindrical 18650 lithium ion battery. The welding needle comprises a welding needle body. A welding needle top cover is welded to one end of the welding needle body. The other end of the welding needle body is connected with the head of the welding needle. The welding needle for bottom welding of the cylindrical 18650 lithium ion battery has the effects of being good in welding effect, resistant to softening, corrosion and ablation, and non-caked in welding; and since the cross sectional area of the welding needle top cover is large, abrasion of an upper seat of a welding machine is reduced while a welding contact surface can be greatly increased, and the service life of the welding needle can be further prolonged.

Description

Technical field [0001] The present invention relates to lithium-ion battery welding technology, and in particular, to a welding needle for bottom welding of cylindrical 18650 lithium-ion batteries. Background technique [0002] Lithium-ion batteries are widely used due to their light weight, large capacity, and no memory effect. Among them, cylindrical 18650 battery cells are widely used because of their simple production and manufacturing. Bottom welding is a crucial step in the production and manufacturing process of cylindrical 18650 battery cells. At an important link, the bottom welding effect directly affects the performance of the finished cell and even leads to the scrapping of the cell. Currently, the bottom welding of cylindrical 18650 lithium-ion batteries in the industry generally uses tapered chromium-zirconium-copper welding pins at both ends. Welding needles often wear out during use, are easily bent, the welding head is easily oxidized, the welding effect is ...

Claims

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Application Information

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IPC IPC(8): B23K11/30B23K35/22B23K35/04B23K101/36
CPCB23K11/30B23K35/0205B23K35/222B23K2101/36
Inventor 李斌周平辉张利平毛泽敏周浪
Owner JIUJIANG XUNTONG NEW ENERGY TECH CO LTD
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