Battery pack and method for manufacturing same
AssigneePanasonic Energy Co., Ltd.
InventorShinsuke FUKUDA
Life of this patent
Estimating the term…
Abstract
A battery pack includes a plurality of secondary battery cells and a plurality of battery holders, each of which stores the plurality of secondary battery cells and the lead plates. The plurality of battery holders are coupled in such an orientation that end faces of adjacent battery holders face each other to form a battery module, and a gas discharge space is defined between the end faces, which face each other, of the battery holders. Each of the battery holders includes a holder tube that stores the secondary battery cells, and a holder lid that closes an end of the holder tube. The lead plates are disposed on an inner face of the holder lid, and the holder lid is made of a material having higher heat resistance than that of the holder tube.
Claims23
A battery pack comprising:
- a plurality of secondary battery cells, each of which has, at an end face, a gas discharge port that opens in response to an increase in internal pressure;
- a plurality of lead plates, each of which connects the plurality of secondary battery cells;
- and
- a plurality of battery holders, each of which stores the plurality of secondary battery cells and the lead plates,
- wherein
- the plurality of battery holders are coupled in such an orientation that end faces of adjacent battery holders face each other to form a battery module,
- a gas discharge space is defined between the end faces, which face each other, of the battery holders,
- each of the battery holders comprises:
- a holder tube that stores the secondary battery cells, and
- at least one holder lid that closes an end of the holder tube, and
- the lead plates are disposed on an inner face of the holder lid.
A battery pack, comprising:
- a plurality of secondary battery cells, each of which has, at an end face, a gas discharge port that opens in response to an increase in internal pressure;
- a plurality of lead plates, each of which connects the plurality of secondary battery cells;
- and
- a plurality of battery holders, each of which stores the plurality of secondary battery cells and the lead plates,
- wherein
- the plurality of battery holders are coupled in such an orientation that end faces of adjacent battery holders face each other to form a battery module,
- a gas discharge space is defined between the end faces, which face each other, of the battery holders,
- each of the battery holders comprises:
- a holder tube that stores the secondary battery cells, and
- at least one holder lid that closes an end of the holder tube, and
- the holder lid is made of a material having higher heat resistance than heat resistance of the holder tube.
A method for manufacturing a battery pack,
- the battery pack comprising:
- a plurality of secondary battery cells, each of which has, at an end face, a gas discharge port that opens in response to an increase in internal pressure;
- a plurality of lead plates, each of which connects the plurality of secondary battery cells;
- and
- a plurality of battery holders, each of which stores the plurality of secondary battery cells and the lead plates,
- the method comprising:
- a step of disposing each of the lead plates on an inner face of a holder lid, which is configured to close an end of a holder tube of each of the battery holders and is made of a material having higher heat resistance than heat resistance of the holder tube;
- a step of storing the secondary battery cells in the holder tube in which each of the lead plates is disposed in such a manner that end faces of the secondary battery cells are mated with the holder lid;
- a step of welding each of the lead plates to the end faces of the secondary battery cells via through-ports opened in the holder tube;
- a step of closing the through-ports with a closing unit;
- and
- a step of coupling the plurality of battery holders in an orientation such that end faces of adjacent battery holders face each other to form a battery module, and defining a gas discharge space between the end faces, which face each other, of the battery holders.
Dependencies are inferred from the claim text.