Battery and manufacturing method of battery
AssigneesChina Lithium Battery Technology Co., Limited, CALB Technology Co., Ltd.
InventorsBinwei Qi, Yongjie Zhang, Jiuling Xu
Life of this patent
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Abstract
The invention relates to the technical field of batteries, and provides a battery and a manufacturing method of battery. The battery includes a main body portion and a tab. The tab is arranged on the main body portion. The tab includes a first welding mark and a second welding mark. The second welding mark covers at least a part of the first welding mark. By forming the first welding mark and the second welding mark on the tab, and the second welding mark covers at least part of the first welding mark, that is, when the tab is welded with the cover element, the tab is welded twice.
Claims17
A battery, comprising:
- a main body portion;
- and
- a tab arranged on the main body portion, wherein the tab comprises a first welding mark and a second welding mark, and the second welding mark covers at least a part of the first welding mark.
A manufacturing method of a battery, the manufacturing method comprising:
- pre-welding a tab on a main body portion to form a first welding mark on the tab;
- welding a pole of a cover element to the tab to form a second welding mark on the tab, wherein the second welding mark is formed to cover at least a part of the first welding mark;
- or, welding a connecting portion of the cover element to the tab to form the second welding mark on the tab, wherein the second welding mark is formed to cover the at least part of the first welding mark.
A battery, comprising:
- a main body portion;
- a tab, wherein the tab extends from a lateral surface of the main body portion, and the tab is provided with two first welding marks arranged at intervals in a direction perpendicular to an extending direction thereof;
- and
- a cover element, wherein the cover element comprises a pole and a connecting portion, the tab is electrically connected to the pole through the connecting portion, the connecting portion is welded to the tab to form a second welding mark, and the second welding mark is located in one of the two first welding marks.
Dependencies are inferred from the claim text.