Toyota Jidosha Kabushiki Kaisha

Masataka Takeda

Kenji Tsuchiya

Hideki Hori

An electrode winding apparatus and method of detecting displacement between a strip-shaped electrode and a strip-shaped separator when stacking and winding the strip-shaped electrode and the strip-shaped separator is described. A winding shaft is configured to wind the strip-shaped electrode and the strip-shaped separator, and a guide member is configured to stack the strip-shaped electrode and the strip-shaped separator before the strip-shaped electrode and the strip-shaped separator are wound around the winding shaft. An imaging device is disposed so as to photograph a portion in which the strip-shaped electrode and the strip-shaped separator are stacked between the guide member and the winding shaft from a side on which the strip-shaped separator is stacked. The imaging device is configured to photograph the strip-shaped separator and the strip-shaped electrode through the strip-shaped separator.

Electrode winding apparatus

A method for producing a wound electrode assembly includes steps of: overlaying electrode strips () and separator strips () on each other, and winding the electrode strips () and the separator strips () on a take-up shaft () while pressing a pressing member () against the electrode strips and the separator strips. In the winding step, the pressing force of the pressing member () is increased with decrease in a tension T applied to at least one of the electrode strips () and the separator strips ().

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Toyota, Japan

Masataka Takeda