Method for winding battery cell of lithium ion
A lithium-ion battery technology, applied in the winding field of lithium-ion batteries
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Example Embodiment
[0019] Example 1
[0020] like figure 2 As shown, the specific operation process of the winding method of the lithium ion battery in this embodiment includes:
[0021] Manually stack the cut pole piece 2 and the diaphragm 1 in turn, and wrap the starting end of the pole piece on the main winding needle 4. The main winding needle driving mechanism drives the main winding needle 4 to rotate, and drives the pole whose starting end has been positioned. After the sheet 2 and the diaphragm 1 are wound to a predetermined thickness, the predetermined thickness is preferably 4 to 5 mm; the driving mechanism is stopped, and an auxiliary winding needle 3 and the main winding needle 4 are manually positioned in parallel with the pole piece of the predetermined thickness shown. On the surface, the driving mechanism works to drive the main winding needle 4 to continue to rotate. After one circle of winding, release the auxiliary winding needle while continuing to wind, and continue to win...
Example Embodiment
[0023] Example 2
[0024] The lithium-ion cell winding method of Example 1 adopts a semi-manual method, and some operations need to be completed manually by a human operator, and the winding efficiency is low. The battery core winding method of the present invention is also suitable for use on automatic winding equipment, and the specific implementation steps are as follows:
[0025] Install the coils of the pole piece and the diaphragm respectively on the automatic unwinding mechanism, and wind the starting end of the diaphragm and the pole piece on the main winding needle of the automatic winding device. Unwinding, automatically enters the winding section, the main winding needle is located in the winding section, the driving mechanism drives the main winding needle to rotate, and drives the pole piece and diaphragm that have been positioned at the starting end to wind up to a predetermined thickness, the driving mechanism stops, and the main winding needle The parallel aux...
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