Energy storage device

Abstract

An energy storage device (100) comprises: an energy storage module (10) comprising an energy storage cell (11) and an electrode terminal (12) arranged on the energy storage cell (11); and a cooler (30) that cools the energy storage cell (11). The electrode terminal (12) is arranged on an end surface (11a, 11b) of the energy storage cell (11) in a Y direction that intersects a Z direction. The cooler (30) comprises an upper portion (31) arranged above the energy storage module (10). Furthermore, the cooler (30) comprises a protruding portion (32) that protrudes from the upper portion (31) in the Y direction in a direction in which the protruding portion (32) is farther away from the energy storage cell (11) than the electrode terminal (12).

Claims

[1] Energy storage device (100), comprising: an energy storage module (10) comprising an energy storage cell (11) and an electrode terminal (12) arranged on the energy storage cell; and a cooler (30, 130, 230) which cools the energy storage cell, wherein the electrode terminal is arranged on an end face (11a, 11b) of the energy storage cell in a first direction intersecting a vertical direction, and the cooler includes a first section (31, 131) arranged above the energy storage module, and a second portion (32, 132, 134) projecting from the first portion in the first direction in a spaced direction in which the second portion is spaced further from the energy storage cell than the electrode terminal. [2] Energy storage device according to claim 1, wherein the cooler comprises a downwardly extending portion (33, 133, 135, 235) and the downwardly extending portion extends downwardly from the second portion. [3] The energy storage device according to claim 2, wherein the downwardly extending portion overlaps the electrode terminal when viewed from the spaced direction. [4] The energy storage device according to claim 3, wherein the downwardly extending portion is arranged lower than a lower end (12c) of the electrode terminal. [5] The energy storage device according to any one of claims 2 to 4, further comprising a heat-conductive material (40) filled between the downwardly extending portion and the electrode terminal and in contact with each of the downwardly extending portion and the electrode terminal. [6] The energy storage device according to claim 5, wherein the downwardly extending portion includes a coolant flow path (33d) through which a coolant flows. [7] The energy storage device according to claim 5, wherein the heat-conductive material is filled in a region (S2) located between the end face of the energy storage cell and the downwardly extending portion and above the electrode terminal. [8] Energy storage device according to claim 7, wherein the energy storage module comprises a first energy storage cell (11) and a second energy storage cell (11), the first energy storage cell and the second energy storage cell are arranged in a second direction which intersects both the first direction and the vertical direction, a gap (G) is provided between the first energy storage cell and the second energy storage cell and a cavity portion (V) in which the heat-conducting material is not arranged is formed between the gap and the downwardly extending portion.

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