Lithium ion power battery
A power battery and lithium-ion technology, applied in the field of lithium-ion power batteries, can solve the problems of difficult wetting of the diaphragm, poor safety performance and cycle performance, and reduced capacity, so as to enhance battery performance, improve battery cycle performance, and improve The effect of safety features
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[0017] The present invention and its beneficial effects will be described in detail below in conjunction with the drawings and specific embodiments, but the embodiments of the present invention are not limited thereto.
[0018] Such as figure 1 , 2 As shown, a lithium-ion power battery includes a casing 1, a spacer (not shown), a cover plate 5, a battery winding core group composed of a winding core 6, and an electrolyte filled in the casing 1 (not shown) ), the housing 1 is set in a polygonal structure, and each core 6 is wound by the positive electrode sheet 2, the separator 3, and the negative electrode sheet 4. The positive electrode sheet 2 and the negative electrode sheet 4 are respectively connected to a tab, and the tab passes through the separator. The ring is welded to the cover plate 5, and the cover plate 5 is welded to the housing 1.
[0019] Preferably, the winding core 6 is cylindrical or diamond-shaped, and the cylindrical winding core 6 is horizontally filled into ...
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