Power storage device

Abstract

To provide a power storage device capable of suppressing electrical conduction between a power storage cell and a partition wall.SOLUTION: A power storage device 1 includes a power storage cell 110 including a smoke exhaust port 112, a cell case 200 that houses the power storage cell, an electronic device 400 that is arranged in the cell case 200 at a position facing a smoke exhaust port 112 of the power storage cell 110, and a partition wall 500 that is provided between the power storage cell 110 and the electronic device 400. The partition wall 500 includes a partition wall main body 510 and an insulator 520 that covers a surface of the partition wall main body 510 that faces the smoke exhaust port 112.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present disclosure relates to an electricity storage device. [Background technology]

[0002] For example, Japanese Patent No. 6463974 discloses an in-vehicle battery including a housing case, a battery module disposed in the housing case, and an auxiliary device disposed in the housing case, with a partition wall provided between the battery module and the auxiliary device. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 6463974 Summary of the Invention [Problem to be solved by the invention]

[0004] In the vehicle battery described in Japanese Patent No. 6463974, there is a concern that waste materials discharged from the battery cells may adhere to the partition walls, causing electrical conduction between the battery cells and the partition walls.

[0005] An object of the present disclosure is to provide an electricity storage device that can suppress conduction between an electricity storage cell and a partition wall. [Means for solving the problem]

[0006] A storage device according to one aspect of the present disclosure includes a storage cell including a smoke exhaust port, a cell case that houses the storage cell, an electronic device that is arranged within the cell case and in a position opposite the smoke exhaust port of the storage cell, and a partition wall that is provided between the storage cell and the electronic device, and the partition wall has a partition wall main body and an insulator that covers a surface of the partition wall main body that faces the smoke exhaust port. [Effects of the Invention]

[0007] According to the present disclosure, it is possible to provide an electricity storage device that can suppress conduction between the electricity storage cells and the partition walls. [Brief explanation of the drawings]

[0008] [Figure 1] 1 is an exploded perspective view schematically illustrating a power storage device according to an embodiment of the present disclosure. [Figure 2] FIG. DETAILED DESCRIPTION OF THE INVENTION

[0009] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0013] The present disclosure will be described with reference to the accompanying drawings, in which the same or corresponding elements are designated by the same reference numerals.

[0010] Fig. 1 is an exploded perspective view schematically showing a power storage device according to an embodiment of the present disclosure. Fig. 2 is a cross-sectional view of the power storage device. The power storage device 1 is mounted on a vehicle, for example.

[0011] As shown in FIGS. 1 and 2, the energy storage device 1 includes at least one energy storage stack 100, a cell case 200, a pressing plate 300, an electronic device 400, and a partition wall 500.

[0012] At least one power storage stack 100 includes a plurality of power storage stacks 100. In this embodiment, the power storage device 1 includes six power storage stacks 100. However, the number of power storage stacks 100 is not limited to six.

[0013] Each power storage stack 100 includes a plurality of power storage cells 110 arranged in a first direction. An example of each power storage cell 110 is a lithium-ion battery. Each power storage cell 110 may be an all-solid-state battery using a solid electrolyte. As shown in FIG. 1 , each power storage cell 110 is formed in the shape of a flat rectangular parallelepiped. The length of the power storage cell 110 in a second direction perpendicular to both the first direction and the vertical direction is longer than the length of the power storage cell 110 in the vertical direction. Each power storage cell 110 has a smoke exhaust port 112 for discharging exhaust gas. The smoke exhaust port 112 is provided at an end of the housing of the power storage cell 110 in the second direction. The exhaust gas may contain electrolyte, metal pieces, etc.

[0014] The cell case 200 houses the power storage stack 100. The cell case 200 has a lower case 210 and an upper cover 220.

[0015] The lower case 210 houses a plurality of power storage stacks 100 and is open upward.

[0016] The upper cover 220 covers the plurality of power storage stacks 100. The upper cover 220 is open downward. The upper cover 220, together with the lower case 210, houses the power storage stacks 100 therein.

[0017] The pressing plate 300 presses the plurality of power storage stacks 100 against the lower case 210. The pressing plate 300 may be formed in a flat plate shape. The pressing plate 300 is made of a synthetic resin or the like. An end of the pressing plate 300 in the second direction is spaced apart from the partition wall 500.

[0018] The electronic device 400 is disposed inside the cell case 200 at a position facing the smoke exhaust port 112 of the storage cell 110. An example of the electronic device 400 is a monitoring unit such as a Smart Battery Management (SBM). The electronic device 400 has, for example, a main body including a circuit board and a case that houses the main body. The case is made of metal.

[0019] The partition wall 500 is provided between the energy storage cell 110 and the electronic device 400. More specifically, the partition wall 500 is disposed between the smoke exhaust port 112 of the energy storage cell 110 and the electronic device 400. The partition wall 500 has a partition wall main body 510 and an insulator 520.

[0020] The partition wall body 510 faces the smoke exhaust port 112 of the energy storage cell 110. The partition wall body 510 is made of, for example, metal. As shown in FIG. 2 , the partition wall body 510 has an upright portion 512 and a support portion 514.

[0021] The upright portion 512 stands upright from the lower case 210. The upright portion 512 may be formed in a flat plate shape. The length of the upright portion 512 in the first direction is the same as or slightly smaller than the length of the power storage stack 100 in the first direction. The distance between the upright portion 512 and the smoke exhaust port 112 is smaller than the distance between the upright portion 512 and the electronic device 400. The height of the upright portion 512 may be the same as the height of the power storage cell 110.

[0022] The support portion 514 supports the standing portion 512. The support portion 514 extends from the lower end of the standing portion 512 toward the electronic device 400.

[0023] Insulator 520 covers the surface of partition wall main body 510 that faces smoke exhaust port 112. Insulator 520 covers the entire surface of upright portion 512. As shown in FIG. 2 , the thickness of insulator 520 is smaller than the thickness of partition wall main body 510.

[0024] As described above, in the energy storage device 1 of this embodiment, the partition wall 500 is provided between the energy storage cells 110 and the electronic device 400, so that the gas (exhaust smoke) discharged from the smoke exhaust port 112 is guided toward the upper cover 220 as shown by the arrow in Fig. 2. This prevents the exhaust smoke from coming into contact with the electronic device 400.

[0025] Furthermore, the surface of the partition wall body 510 that faces the smoke exhaust port 112 is covered with the insulator 520, which prevents electrical conduction between the power storage cells 110 and the partition wall 500 via the smoke exhaust.

[0026] It will be appreciated by those skilled in the art that the exemplary embodiments described above are examples of the following aspects.

[0027] [Aspect 1] a storage cell including a smoke exhaust port; a cell case that houses the storage cell; an electronic device disposed in the cell case and at a position facing the smoke exhaust port of the storage cell; a partition wall provided between the storage cell and the electronic device, The partition wall is A bulkhead body; an insulator covering a surface of the partition body facing the smoke exhaust port.

[0028] In this energy storage device, a partition wall is provided between the energy storage stack and the electronic device, preventing the gas discharged from the smoke exhaust port from coming into contact with the electronic device. Furthermore, the surface of the partition wall body facing the smoke exhaust port is covered with an insulator, preventing electrical conduction between the energy storage cell and the partition wall via the smoke exhaust port.

[0029] [Aspect 2] The cell casing is a lower case that houses the power storage cells; an upper cover that covers the storage cell, 2. The power storage device according to claim 1, wherein the partition body guides gas discharged from the smoke exhaust port toward the upper cover.

[0030] [Aspect 3] 3. The power storage device according to aspect 1 or 2, wherein the thickness of the insulator is smaller than the thickness of the partition wall body.

[0031] It should be noted that the embodiments disclosed herein are illustrative in all respects and should not be considered limiting. The scope of the present disclosure is defined by the claims rather than the description of the above embodiments, and further includes all modifications within the meaning and scope of the claims. [Explanation of symbols]

[0032] 1 Energy storage device, 100 Energy storage stack, 110 Energy storage cell, 112 Smoke exhaust port, 200 Cell case, 210 Lower case, 220 Upper cover, 300 Presser plate, 400 Electronic equipment, 500 Partition wall, 510 Partition wall body, 520 Insulator.

Claims

[Claim 1] a storage cell including a smoke exhaust port; A cell case that houses the storage cell; an electronic device disposed in the cell case and facing the smoke exhaust port of the storage cell; a partition wall provided between the storage cell and the electronic device, The partition wall is A bulkhead body; an insulator covering a surface of the partition body facing the smoke exhaust port.

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