Energy Storage Apparatus
AssigneeGS Yuasa International Ltd.
InventorNoriaki MASUDA
Life of this patent
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Abstract
An energy storage apparatus includes: an energy storage device including a case housing an electrode assembly therein, an external terminal disposed at the case, and a fixing member for fixing the external terminal to the case, the fixing member electrically connecting the electrode assembly to the external terminal; and a bus bar member to be welded to the external terminal, wherein one of the bus bar member and the fixing member has a recess whereas the other of the bus bar member and the fixing member has a projection to be inserted into the recess.
Claims14
An energy storage apparatus comprising:
- an energy storage device including a case housing an electrode assembly therein, an external terminal disposed at the case, and a fixing member for fixing the external terminal to the case, the fixing member electrically connecting the electrode assembly to the external terminal;
- and
- a bus bar member to be welded to the external terminal,
- wherein one of the bus bar member and the fixing member has a recess
- whereas the other of the bus bar member and the fixing member has a projection to be inserted into the recess.
An energy storage apparatus comprising:
- an energy storage device including a case housing an electrode assembly therein, an external terminal disposed at the case, and a fixing member for fixing the external terminal to the case, the fixing member electrically connecting the electrode assembly to the external terminal;
- and
- a bus bar member to be welded to the external terminal,
- wherein the bus bar member has a projection,
- the projection being inserted between the fixing member and the external terminal.
An energy storage apparatus comprising:
- a plurality of energy storage devices, each having a case housing an electrode assembly therein, an external terminal disposed on an outer side of the case, and a fixing member for fixing the external terminal to the case, the fixing member electrically connecting the electrode assembly to the external terminal, the energy storage devices being aligned in a first direction;
- and
- a bus bar member that is welded between the external terminals of the adjacent energy storage devices out of the plurality of energy storage devices, the bus bar member being superimposed on the external terminals in a second direction perpendicular to the first direction,
- wherein the fixing member has a rivet portion penetrating the case and the external terminal and a flange portion formed at the tip of the rivet portion,
- wherein the flange portion has a lower surface extending along the external terminal and a side portion extending from the end of the lower surface, the side portion extending apart from the external terminal,
- wherein the bus bar member has a lower surface in contact with the external terminal, an upper surface positioned opposite to the lower surface, and side walls facing an entire circumference of the side portion of the flange portion, and
- wherein the external terminal and the bus bar member have welded portions that are formed over the upper surface of the bus bar member, the lower surface of the bus bar member, and the external terminal.
A fabricating method for an energy storage apparatus comprising:
- an energy storage device including a case housing an electrode assembly therein, an external terminal disposed at the case, and a fixing member for fixing the external terminal to the case, the fixing member electrically connecting the electrode assembly to the external terminal;
- and
- a bus bar member to be welded to the external terminal of the energy storage device,
- the method comprising the steps of:
- positioning the external terminal and the bus bar member;
- and
- welding the external terminal to the bus bar member,
- wherein one of the bus bar member and the fixing member has a recess,
- whereas the other of the bus bar member and the fixing member has a projection,
- the positioning step being inserting the projection into the recess.
Dependencies are inferred from the claim text.