All-solid-state battery and battery module

1 . An all-solid-state battery comprising:

a laminated body in which a positive electrode layer, a sulfide-based solid electrolyte layer, and a negative electrode layer are laminated;

an absorber configured to absorb hydrogen sulfide gas; and

an outer package configured to form a housing space in which the laminated body and the absorber are housed,

wherein the outer package includes a sealing portion configured to hermetically seal the housing space,

the sealing portion includes a fragile portion whose sealing strength is weaker than that of the other portion of the sealing portion, and

in a case where the hydrogen sulfide gas is generated in the housing space, sealing of the fragile portion is released earlier than the other portion to form a discharge port through which the hydrogen sulfide gas is discharged to an outside of the housing space.

2 . The all-solid-state battery according to claim 1 ,

wherein the absorber is arranged below the laminated body in a vertical direction in a posture of the all-solid-state battery during use.

3 . The all-solid-state battery according to claim 1 ,

wherein the fragile portion is arranged below the laminated body in a vertical direction in a posture of the all-solid-state battery during use.

4 . The all-solid-state battery according to claim 1 ,

wherein the sealing portion hermetically seals the housing space by overlapping and welding materials of the outer package, and

a width of a welding margin is smaller in the fragile portion than in the other portion.

5 . The all-solid-state battery according to claim 1 ,

wherein the absorber is provided to extend in an intersecting direction intersecting a laminating direction of the laminated body, and

the all-solid-state battery further comprises a support member that extends in the intersecting direction between the absorber and the outer package and supports the absorber.

6 . The all-solid-state battery according to claim 5 ,

wherein the support member is formed to have a width larger than a thickness of the laminated body in the laminating direction.

7 . The all-solid-state battery according to claim 5 ,

wherein the support member is provided to extend between the laminated body and the outer package.

8 . The all-solid-state battery according to claim 7 ,

wherein the support member extends to an upper side of the laminated body in a vertical direction in a posture of the all-solid-state battery during use, and

the support member includes a protruding portion that protrudes inward in the laminating direction to a portion on the upper side of the laminated body.

9 . A battery module comprising:

an all-solid-state battery; and

an arrangement portion in which the all-solid-state battery is arranged,

wherein the all-solid-state battery includes:

a laminated body in which a positive electrode layer, a sulfide-based solid electrolyte layer, and a negative electrode layer are laminated;

an absorber configured to absorb hydrogen sulfide gas; and

an outer package configured to form a housing space in which the laminated body and the absorber are housed,

wherein the outer package includes a sealing portion that hermetically seals the housing space,

the sealing portion includes a fragile portion whose sealing strength is weaker than that of the other portion of the sealing portion, and

in a case where the hydrogen sulfide gas is generated in the housing space, sealing of the fragile portion is released earlier than the other portion to form a discharge port through which the hydrogen sulfide gas is discharged to an outside of the housing space.

10 . The battery module according to claim 9 ,

wherein the absorber is provided to extend in an intersecting direction intersecting a laminating direction of the laminated body,

the all-solid-state battery further includes a support member that extends in the intersecting direction between the absorber and the outer package and supports the absorber,

the support member is formed to have a width larger than a thickness of the laminated body in the laminating direction, and

the arrangement portion includes a recess into which a portion of the all-solid-state battery that includes the support member is fitted.

11 . The battery module according to claim 9 , further comprising

a discharge path forming portion configured to form a discharge path through which the hydrogen sulfide gas discharged from the discharge port of the all-solid-state battery arranged in the arrangement portion passes.

12 . The battery module according to claim 11 , further comprising

a refrigerant path forming portion configured to form a refrigerant path through which a refrigerant for cooling the all-solid-state battery arranged in the arrangement portion passes,

wherein the absorber is provided to extend in an intersecting direction intersecting a laminating direction of the laminated body,

the all-solid-state battery further includes a support member that extends in the intersecting direction between the absorber and the outer package and supports the absorber, and

the refrigerant path is formed to extend in a direction in which the support member extends.

13 . The battery module according to claim 12 ,

wherein the discharge path and the refrigerant path are arranged in such a way as to overlap each other in a vertical direction.