Method of manufacturing electrode stack module
AssigneeToyota Jidosha Kabushiki Kaisha
InventorSeigo FUJISHIMA
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Abstract
A method of manufacturing an electrode stack module according to the present disclosure includes (a) providing an electrode stack in which an end part of a current collector layer protrudes, (b) stacking a first resin sealing member, an electrode stack, and a second resin sealing member in this order at the end part, and (c) heating the current collector layer by irradiating the current collector layer with a laser beam, welding each of the current collector layer, the first resin sealing member, and the second resin sealing member, in which a wavelength of the laser beam satisfies the following (i) and (ii), (i) an absorption rate of the laser beam in the current collector layer is 50% or more, and (ii) an absorption rate of the laser beam in the first resin sealing member is 10% or less.
Claims5
A method of manufacturing an electrode stack module, the method comprising:
- (a) providing an electrode stack that includes a positive electrode active material layer, a current collector layer, and a negative electrode active material layer in order of the positive electrode active material layer, the current collector layer, and the negative electrode active material layer, and in which an end part of the current collector layer protrudes;
- (b) stacking a first resin sealing member, the electrode stack, and a second resin sealing member in order of the first resin sealing member, the electrode stack, and the second resin sealing member at the end part;
- and
- (c) heating the end part of the current collector layer by irradiating the end part with a laser beam through the first resin sealing member from a stacking direction of the electrode stack, and welding each of one surface of the end part and the first resin sealing member, the other surface of the end part and the second resin sealing member, and the first resin sealing member and the second resin sealing member, wherein:
- a wavelength of the laser beam satisfies both of (i) and (ii):
- (i) an absorption rate of the laser beam in the current collector layer is 50% or more;
- and
- (ii) an absorption rate of the laser beam in the first resin sealing member is 10% or less.
Dependencies are inferred from the claim text.