Battery cell, battery module, battery pack, device, and manufacturing method
A battery cell and battery technology, applied in battery pack components, circuits, electrical components, etc., can solve the problem of easy dislocation at the end, and achieve the effect of reducing the degree of dislocation and increasing the area
Active Publication Date: 2021-02-05
CONTEMPORARY AMPEREX TECH CO
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Problems solved by technology
[0006] Embodiments of the present invention provide a battery cell, a battery module, a battery pack, a device, and a manufacturing method, aiming to solve the problem that the tabs are prone to misalignment after being pressed.
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[0055] Features and exemplary embodiments of various aspects of the invention will be described in detail below. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is only to provide a better understanding of the present invention by showing examples of the present invention. In the drawings and the following description, at least some well-known structures and techniques have not been shown in order to avoid unnecessarily obscuring the present invention; and, for clarity, the dimensions of some structures may have been exaggerated. Furthermore, the features, structures, or characteristics described hereinafter may be combined in any suitable manner in one or more embodiments.
[0056] In the des...
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The embodiment of the invention provides a battery cell, a battery module, a battery pack, a device, a manufacturing method, an electrode unit and an adapter piece. The electrode unit and the adapterpiece are connected with each other, the electrode unit comprises a battery main body and tabs extending out of the battery main body, the tabs comprise a positive tab and a negative tab, and the positive tab and the negative tab are formed by stacking more than two tab pieces; more than two tab pieces comprise notched tab pieces, and the notched tab pieces are provided with notches which are arranged in a penetrating manner; the tabs are provided with welding areas, the welding areas are located on the sides, deviating from the battery body, of the notches, and the tabs are welded to the adapter pieces through the welding areas. According to the embodiment of the invention, when a plurality of laminated tab pieces are pressed to form the tab, the dislocation degree of one end, far away from the battery main body, of the tab can be reduced, and the area of a welding region on the tab is increased.
Description
technical field [0001] The invention relates to the technical field of energy storage equipment, in particular to a battery cell, a battery module, a battery pack, a device and a manufacturing method. Background technique [0002] As an important battery cell, lithium battery has been widely used in industries such as automobiles, energy storage, and consumer electronics due to its advantages of high energy density, large capacity, high power, and long life. With the continuous improvement of the performance requirements of lithium batteries on the application side, the manufacturing side has adopted various methods to improve the space utilization rate and energy density of the battery. Among them, increasing the number of coils or stacked layers of the tabs is a Simple and effective measures. [0003] When welding the tabs, it is necessary to press the multi-layered tabs to form the tabs. After the tabs are pressed, the ends of the tabs will be dislocated, resulting in a ...
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IPC IPC(8): H01M50/533H01M50/538H01M50/54H01M50/536H01M50/528
CPCY02E60/10
Inventor 白清林方宏新温裕乾林喆韩波陈从胜
Owner CONTEMPORARY AMPEREX TECH CO