Pole piece tension control method and winding device
A winding device, pole piece technology, applied in electric speed/acceleration control, strip winding, transportation and packaging, etc., can solve the problem of poor stability, tension fluctuation, unwinding speed and winding speed mismatch And other issues
Active Publication Date: 2017-11-24
CONTEMPORARY AMPEREX TECH CO
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Problems solved by technology
[0002] For wound-type electrode assemblies, during the winding process, tension fluctuations often occur because: the unwinding speed of the pole piece does not match the winding speed of the winding needle, for example, the unwinding speed of the pole piece The speed is fast, but the winding speed of the winding needle is slow, or the speed of unwinding the pole piece is slow, but the winding speed of the winding needle is fast
[0003] On the one hand, tension fluctuations will reduce the winding quality of the electrode assembly, on the other hand, it will also lead to poor stability during the winding process of the pole piece, affecting the winding speed, thereby reducing the processing efficiency of the electrode assembly
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[0085] The present application will be described in further detail below through specific embodiments and in conjunction with the accompanying drawings.
[0086] Such as figure 1 As shown, the present application provides a pole piece tension control method, the control method is used to control the tension fluctuation of the pole piece during the winding process, and improve the winding quality of the electrode assembly.
[0087] The following takes the tension control of the first pole piece as an example for illustration, and the control method specifically includes the following steps:
[0088] First, in step S10, the first displacement of the first moving roller moving from the start point to the end point along the same direction is acquired. Wherein, during the winding process of the first pole piece, the first pole piece is in contact with the first moving roller and is conveyed towards the side of the winding needle around the first moving roller. The first moving ro...
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The invention relates to a pole piece tension control method and a winding device. The control method includes: step S10, acquiring a first displacement of a first movable roller from a starting point to an end point along a same direction; step S12, if the first displacement has a component with a same delivery direction to a first section first pole piece that is to be winded on the fist movable roller and is closest to the first movable roller, entering step S20, step S14, if the first displacement has a component with an opposite delivery direction to the first section first pole piece, entering step S22, step S20, decreasing the speed of part of the first pole piece to be winded to the first movable roller; and step S22, increasing the speed of part of the first pole piece to be winded to the first movable roller. The method can effectively control the tension fluctuation of the pole piece.
Description
technical field [0001] The present application relates to the technical field of manufacturing energy storage devices, in particular to a method for controlling the tension of pole pieces and a winding device. Background technique [0002] For wound-type electrode assemblies, during the winding process, tension fluctuations often occur because: the unwinding speed of the pole piece does not match the winding speed of the winding needle, for example, the unwinding speed of the pole piece The speed is fast, but the winding speed of the winding needle is slow, or the speed of unwinding the pole piece is slow, but the winding speed of the winding needle is fast. [0003] On the one hand, tension fluctuations will reduce the winding quality of the electrode assembly, and on the other hand, it will also lead to poor stability during the winding process of the pole piece, affecting the winding speed, thereby reducing the processing efficiency of the electrode assembly. Contents o...
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IPC IPC(8): H01M10/04H01M6/00B65H23/14G05D13/62
CPCH01M6/005H01M10/0409G05D13/62B65H23/14Y02P70/50
Inventor 王艺若张小畏常洪文黄吉军谢超
Owner CONTEMPORARY AMPEREX TECH CO