Electricity storage device

1. An electricity storage device comprising:

a plurality of electricity storage modules, each including an electricity storage module case, a plurality of electricity storage cells housed in the electricity storage module case, and external terminals of positive and negative electrodes;

an electricity storage case in which the plurality of electricity storage modules are arranged and housed;

a plurality of wire harnesses connected to the external terminals of the positive and negative electrodes of the electricity storage modules; and

a vibration damping material provided in a space region between one surface of the electricity storage case and, among the plurality of wire harnesses, at least a wire harness including the longest length extending in an arrangement direction of the electricity storage modules, wherein

the wire harness including the longest length extending in the arrangement direction of the electricity storage modules is biased toward a side of the electricity storage module case by the one surface of the electricity storage case, through the vibration damping material.

2. The electricity storage device according to claim 1 , wherein

a vibration energy diffusion member that diffuses vibration energy of the wire harness and is wider than a thickness of the wire harness is provided in at least a part between the vibration damping material and the wire harness.

3. The electricity storage device according to claim 2 , wherein

the vibration energy diffusion member is a harness holder including a pressing part that biases the wire harness toward the side of the electricity storage module case.

4. The electricity storage device according to claim 3 , wherein

a movement restricting part that restricts movement of the wire harness in a direction perpendicular to an extending direction of the wire harness is provided on the harness holder.

5. The electricity storage device according to claim 4 , wherein

the movement restricting part includes a pair of protrusions provided at an interval larger than the thickness of the wire harness, and

the wire harness can be displaced in the direction perpendicular to the extending direction of the wire harness.

6. The electricity storage device according to claim 5 , wherein

the plurality of wire harnesses are arranged between the one surface of the electricity storage case and a plurality of the electricity storage module cases, and

the vibration damping material biases at least a part of each of the plurality of wire harnesses toward the side of at least one of the electricity storage module cases.

7. The electricity storage device according to claim 4 , wherein

the plurality of wire harnesses are arranged between the one surface of the electricity storage case and a plurality of the electricity storage module cases, and

the vibration damping material biases at least a part of each of the plurality of wire harnesses toward the side of at least one of the electricity storage module cases.

8. The electricity storage device according to claim 3 , wherein

tubular protrusions including insertion parts which extend in a direction substantially perpendicular to the extending direction of the wire harness and into which fastening members for fixing the electricity storage modules to the electricity storage case are to be inserted are provided on one surface of the electricity storage module case which is opposed to the one surface of the electricity storage case.

9. The electricity storage device according to claim 8 , wherein

the harness holder includes the pressing part that biases the wire harness toward the side of the one surface of the electricity storage module case, and

the pressing part is arranged between the tubular protrusions of at least one of the electricity storage modules.

10. The electricity storage device according to claim 9 , wherein

the plurality of wire harnesses are arranged between the one surface of the electricity storage case and a plurality of the electricity storage module cases, and

the vibration damping material biases at least a part of each of the plurality of wire harnesses toward the side of at least one of the electricity storage module cases.

11. The electricity storage device according to claim 8 , wherein

the plurality of wire harnesses are arranged between the one surface of the electricity storage case and a plurality of the electricity storage module cases, and

the vibration damping material biases at least a part of each of the plurality of wire harnesses toward the side of at least one of the electricity storage module cases.

12. The electricity storage device according to claim 3 , wherein

the plurality of wire harnesses are arranged between the one surface of the electricity storage case and a plurality of the electricity storage module cases, and

the vibration damping material biases at least a part of each of the plurality of wire harnesses toward the side of at least one of the electricity storage module cases.

13. The electricity storage device according to claim 2 , wherein

the plurality of wire harnesses are arranged between the one surface of the electricity storage case and a plurality of the electricity storage module cases, and

the vibration damping material biases at least a part of each of the plurality of wire harnesses toward the side of at least one of the electricity storage module cases.

14. The electricity storage device according to claim 1 , wherein

the plurality of wire harnesses are arranged between the one surface of the electricity storage case and a plurality of the electricity storage module cases, and

the vibration damping material biases at least a part of each of the plurality of wire harnesses toward the side of at least one of the electricity storage module cases.