Lithium ion battery core package, lithium ion battery and preparation method of lithium ion battery
A technology of lithium-ion batteries and core packs, applied in the manufacture of electrolyte batteries, batteries, secondary batteries, etc., can solve the problem that high-temperature tape 2 is difficult to protect, and achieve the effect of improving the appearance consistency
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[0044] Example 1:
[0045]The lithium-ion battery core package provided in this embodiment mainly includes a laminate, and the laminate mainly consists of a positive electrode sheet, a negative electrode sheet, and a separator spaced between adjacent positive electrode sheets and negative electrode sheets, wherein the separator can be an independent separator layer, A long sheet-shaped separator can also be used to be spaced in a zigzag shape between each adjacent positive electrode and negative electrode, wherein the width of the negative electrode is slightly wider than that of the positive electrode, and the separator is equal to or slightly larger than the width of the negative electrode.
[0046] see figure 2 As shown, outside the active material coating area of each positive electrode sheet, a positive electrode lug welding part 5 (the current collector is exposed and used for welding the positive electrode lug) is also reserved outside the lamination body. 7) After ...
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