Secondary battery and battery module
A technology for secondary batteries and electrode assemblies, which is applied in the field of secondary batteries and battery modules, can solve problems such as difficult operation, current collecting units and false welding of pole ears, etc.
Pending Publication Date: 2020-07-07
CONTEMPORARY AMPEREX TECH CO
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- Application Information
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Problems solved by technology
The electrode assembly has an end face and a tab extending from the end face. Due to the small gap between the current collecting unit and the end face, it is difficult to weld the current collecting unit and the tab using welding equipment, which is easy to cause False welding of the current collecting unit and tabs
Method used
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Embodiment Construction
[0039] Embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings and examples. The detailed description and drawings of the following embodiments are used to illustrate the principles of the present invention, but not to limit the scope of the present invention, that is, the present invention is not limited to the described embodiments.
[0040] In the description of the present invention, it should be noted that unless otherwise specified, the meaning of "plurality" is two or more; the terms "upper", "lower", "left", "right", "inner ", "outside" and other indicated orientations or positional relationships are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation of the i...
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The invention relates to a secondary battery and a battery module. The secondary battery comprises: a case including an accommodating hole having an opening; a top cover assembly, wherein the top cover assembly is connected with the shell in a sealed mode so as to cover the opening; an electrode assembly, wherein the electrode assembly is arranged in the containing hole, the electrode assembly comprises two end faces opposite to each other in the first direction perpendicular to the axial direction of the containing hole and tabs extending out of the end faces, and the electrode assembly comprises two or more electrode units stacked in the axial direction; and a current collecting unit, wherein the current collecting unit comprises a first sheet and a first current collecting sheet connected to the first sheet, the first sheet and the first current collecting sheet extend in the axial direction, and the tab is bent relative to the first direction and is electrically connected to the first current collecting sheet. According to the embodiment of the invention, the tabs included in the secondary battery can be connected with the top cover assembly through the current collecting units, and the current collecting units are simple and compact in structure, so that the energy density of the secondary battery can be improved.
Description
technical field [0001] The invention relates to the technical field of batteries, in particular to a secondary battery and a battery module. Background technique [0002] With the development of science and technology, secondary batteries have been widely used in portable electronic devices such as mobile phones, digital cameras and laptop computers, and in large and medium-sized electric devices such as electric vehicles, electric bicycles and other electric vehicles and energy storage facilities. It has broad application prospects and has become an important technical means to solve global problems such as energy crisis and environmental pollution. In the prior art, a secondary battery includes an electrode assembly and a current collecting unit connected to the electrode assembly. The electrode assembly has an end face and a tab extending from the end face. Due to the small gap between the current collecting unit and the end face, it is difficult to weld the current coll...
Claims
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IPC IPC(8): H01M2/26H01M10/04H01M50/209H01M50/505H01M50/533H01M50/536H01M50/538
CPCH01M10/0431H01M50/538H01M50/536H01M50/533H01M50/505H01M50/209H01M10/0525Y02E60/10H01M50/103Y02P70/50
Inventor 陈元宝杨瑞史东洋陈宁胡飞李振华
Owner CONTEMPORARY AMPEREX TECH CO