Method for bonding separators, method for manufacturing electrochemical device, and electrochemical device
AssigneeEnvision AESC Energy Devices Ltd.
InventorsMayuko KISHI, Naoyuki IWATA
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Abstract
A method for bonding separators (3) having a multilayer structure that comprises a substrate layer (3a) and a ceramic layer (3b), the ceramic layer (3b) being laminated on at least one surface of the substrate layer (3a) and having higher heat resistance properties than the substrate layer (3a), the method comprising steps of: applying an adhesive member (10) onto the ceramic layer (3b) and then peeling off the adhesive member (10) to remove a portion of the ceramic layer (3b) together with the adhesive member (10); and heating a portion of the separator (3), from which the ceramic layer (3b) has been removed, to heat-weld the separator (3) to other separator (3).
Claims9
A method for bonding separators having a multilayer structure that comprises a substrate layer and a ceramic layer, the ceramic layer being laminated on at least one surface of the substrate layer and having higher heat resistance properties than the substrate layer,
- the method comprising steps of:
- applying an adhesive member onto the ceramic layer and then peeling off the adhesive member to remove a portion of the ceramic layer together with the adhesive member;
- and
- heating a portion of the separator, from which the ceramic layer has been removed, to heat-weld the separator to other separator.
An electrochemical device comprising an electrode laminate body in which two types of electrodes are stacked on each other with separators interposed therebetween, and an outer container that accommodates the electrode laminate body together with an electrolyte;
- wherein:
- the separators having a multilayer structure that comprises a substrate layer and a ceramic layer that is laminated on at least one surface of the substrate layer and that has higher heat resistance properties than the substrate layer;
- the ceramic layer is removed except for one portion of the outer periphery of the separator;
- the outer peripheries of the separators overlap at the outside of the electrodes,
- the portions of the separators, from which the ceramic layers have been removed, are heat-welded together to form a bag-shaped separator, and
- one type of electrode is accommodated in the bag-shaped separators.
Dependencies are inferred from the claim text.