Electricity storage module

An energy storage module comprising:

• an array of multiple cylindrical energy storage devices;
• and
• a first holder that holds an end portion, located on one side, of each of the multiple energy storage devices and has multiple first containers made of a first material, wherein:
• the first holder includes a first support member that is located between two adjacent energy storage devices of the multiple energy storage devices to support the two adjacent energy storage devices, and that is made of a second material,
• the second material has a property of being less likely to deform or melt even when heated than the first material,
• the first support member comprises a first face and a second face opposite to the first face in an arrangement direction that is a direction in which the two adjacent energy storage devices are arranged, the first face supporting a first energy storage device of the two adjacent energy storage devices and the second face supporting a second energy storage device of the two adjacent energy storage devices in the arrangement direction,
• the first support member is disposed in a void formed in the first holder, and
• in the first container of the first holder, a groove is formed in a surface facing the energy storage device along a circumferential direction of the energy storage device,
• the groove communicates with the void, and
• the second material is disposed in the groove.

An energy storage module comprising:

• multiple cylindrical energy storage devices, each of the multiple energy storage devices having a first terminal and a second terminal at an end portion located on one side, the multiple energy storage devices being arranged so that the end portions, located on the one side, are aligned on the same side;
• and
• a second holder that holds the other side of each of the multiple energy storage devices and is made of a first material, wherein:
• the second holder includes a second support member that is located between two adjacent energy storage devices of the multiple energy storage device and supports the two adjacent energy storage devices together between the two adjacent energy storage devices and is made of a second material,
• the second material has a property of being less likely to deform or melt even when heated than the first material,
• the second support member comprises a first face and a second face opposite to the first face in an arrangement direction that is a direction in which the two adjacent energy storage devices are arranged, the first face supporting a first energy storage device of the two adjacent energy storage devices and the second face supporting a second energy storage device of the two adjacent energy storage devices in the arrangement direction,
• the second support member is disposed in a void formed in the second holder, and
• in the second holder, a groove is formed in a surface facing the energy storage device along a circumferential direction of the energy storage device,
• the groove communicates with the void, and
• the second material is disposed in the groove.