Battery cell of novel embedded type structure

摘要

Disclosed herein is a battery cell including an electrode assembly of a cathode/separator/anode structure, the electrode assembly being impregnated with electrolyte, the electrode assembly being chargeable and dischargeable, a battery case in which the electrode assembly is mounted, the battery case being made of aluminum or an aluminum alloy, and a protective coating layer applied to at least a portion of an outer surface of the battery case, the protective coating layer containing an electrically insulative polymer material.

主权项

1. A battery cell comprising:
an electrode assembly of a cathode/separator/anode structure, the electrode assembly being impregnated with an electrolyte, the electrode assembly being chargeable and dischargeable; a battery case in which the electrode assembly is mounted, the battery case being made of aluminum or an aluminum alloy; and a protective coating layer applied to at least a portion of an outer surface of the battery case, the protective coating layer containing an electrically insulative polymer material, wherein the battery case is a prismatic battery case, wherein the battery case has a connection opening section formed at a bottom thereof, wherein the protective coating layer is applied to a bottom of the battery case excluding the connection opening section, wherein a battery cell activation process, which is carried out during manufacturing of the battery cell, is performed in a state in which an anode (or cathode) charge pin is connected to an upper end of the battery cell and a cathode (or anode) charge pin is connected to a lower end of the battery cell, wherein the cathode (or anode) charge pin is connected to the connection opening section such that the battery cell activation process is carried out, and wherein the connection opening section of the battery case is sealed by an insulation member in a state in which the battery cell is activated.