Method for producing lithium-ion battery
AssigneePanasonic Corporation
InventorsKunihiko Mineya, Tatsuki Hiraoka
Life of this patent
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Abstract
A positive electrode plate 5, a separator 7, and a negative electrode plate 6 are prepared. The positive electrode plate 5, the separator 7, and the negative electrode plate 6 are combined so as to form a spirally-wound electrode assembly 4. A winding end portion 9 of the electrode assembly 4 is fixed with a heat-sensitive adhesive (preferably, a heat-sensitive adhesive tape 10) whose adhesive force can be reduced by heating or cooling. The electrode assembly 4 is placed in an outer casing 1, and then the ambient temperature of the electrode assembly 4 is adjusted so that the electrode assembly 4 is loosened due to reduction in the adhesive force of the heat-sensitive adhesive. An electrolyte solution is injected into the outer casing 1.
Claims9
A method for producing lithium-ion batteries, the method comprising the steps of:
- preparing a positive electrode plate, a separator, and a negative electrode plate;
- combining the positive electrode plate, the separator, and the negative electrode plate so as to form a spirally-wound electrode assembly;
- fixing a winding end portion of the electrode assembly with a heat-sensitive adhesive whose adhesive force can be reduced by heating or cooling;
- placing the electrode assembly in an outer casing, and then adjusting an ambient temperature of the electrode assembly so that the electrode assembly is loosened due to reduction in the adhesive force of the heat-sensitive adhesive;
- and
- injecting an electrolyte solution into the outer casing.
Dependencies are inferred from the claim text.