Battery device

Abstract

The present invention provides a battery device that makes it difficult for heat generated in any of the battery cells included in multiple battery modules to be transferred to adjacent battery cells. [Solution] The battery device comprises a first battery module 45 having a first battery stack 50 having a plurality of first battery cells 52 stacked in a predetermined direction and a first heat exchanger 64 capable of exchanging heat with the first battery stack, a second battery module 80 having a second battery stack 82 having a plurality of second battery cells 52 stacked in a predetermined direction, and a heat conductive member 75 that contacts the first heat exchanger and the second battery module.

Claims

1. A first battery stack having a plurality of first battery cells stacked in a predetermined direction, and a first battery module having a first heat exchanger capable of exchanging heat with the first battery stack, A second battery module having a second battery stack having a plurality of second battery cells stacked in the predetermined direction, A heat conductive member that contacts the first heat exchanger and the second battery module, A battery device equipped with the following features.

2. The second battery module includes a second heat exchanger capable of exchanging heat with the second battery stack, The battery device according to claim 1, wherein the heat conductive member is in contact with the first heat exchanger and the second heat exchanger.

3. The first battery module comprises a pair of first end plates positioned at both ends of the first battery stack, The first battery cell is sandwiched between a pair of first end plates. The battery device according to claim 1 or claim 2, wherein the first heat exchanger is connected to a pair of first end plates, respectively.

4. The first heat exchanger comprises a first metal case and a first refrigerant flowing through the first case. The battery device according to claim 3, wherein both ends of the first case are connected to a pair of first end plates, respectively.

5. The device comprises a battery case that houses the first battery module and the second battery module, The battery device according to claim 3, wherein the first end plate is connected to the battery case.

6. The second battery module comprises a pair of second end plates positioned at both ends of the second battery stack, The second battery cell is sandwiched between a pair of the second end plates. The battery device according to claim 3, wherein a pair of the second end plates are connected to a pair of the first end plates, respectively.

7. The second battery module includes a second heat exchanger capable of exchanging heat with the second battery stack, The second heat exchanger comprises a second metal case and a second refrigerant flowing through the second case. The battery device according to claim 6, wherein both ends of the second case are connected to a pair of second end plates, respectively.

8. The battery device according to claim 4, wherein the first battery cell has a solid electrolyte.

9. The battery device according to claim 7, wherein the second battery cell has a solid electrolyte.

10. The first battery module and the second battery module are arranged in an orthogonal direction perpendicular to the predetermined direction, A first fixing member that fixes one of the first end plates and one of the second end plates facing each other in the orthogonal direction, A second fixing member that fixes the other first end plate and the other second end plate facing each other in the orthogonal direction, The battery device according to claim 6, comprising:

11. The battery device according to claim 1 or claim 2, wherein the heat conductive member is an adhesive.

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