EP-4738579-A1 - POWER STORAGE DEVICE

Abstract

An energy storage apparatus according to the present invention includes: a plurality of energy storage devices aligned in a first direction; an end plate located at an end portion of the plurality of energy storage devices in the first direction; and a side plate which extends in the first direction and joins with the end plate, in which the side plate includes: a first part which extends in the first direction; a second part which extends from the first part so as to cover the end plate and is fixed to the end plate; and a third part which extends from the second part in the first direction along an installation surface of the energy storage apparatus and is fixed to the installation surface.

Inventors

• FUJIKURA, Ryohei

Assignees

• GS Yuasa International Ltd.

Dates

Publication Date

20260506

Application Date

20240626

Claims (5)

1. An energy storage apparatus comprising: a plurality of energy storage devices aligned in a first direction; an end plate located at an end portion of the plurality of energy storage devices in the first direction; and a side plate located at an end portion of the plurality of energy storage devices in a second direction intersecting the first direction, wherein the end plate includes an end plate connecting portion connected to the side plate, and the side plate includes: a first part which extends in the first direction; a second part which extends from the first part in the second direction and is connected to the end plate connecting portion; and a third part which extends from the second part in the first direction along an installation surface of the energy storage apparatus and is fixed to the installation surface.
2. The energy storage apparatus according to claim 1, wherein the side plate is formed of a single sheet of plate material, and the first part, the second part, and the third part are formed by bending the plate material.
3. The energy storage apparatus according to claim 1, wherein a long hole into which a fixing member, which is for fixing the installation surface and the third part, is inserted is formed in the third part.
4. The energy storage apparatus according to claim 1, wherein the third part is provided near the first part in the second direction.
5. The energy storage apparatus according to claim 1, wherein the end plate includes a raised portion which is located adjacent to the end plate connecting portion, and a thickness of the raised portion is greater than a thickness of the end plate connecting portion in the first direction.

Description

TECHNICAL FIELD The present invention relates to an energy storage apparatus. BACKGROUND ART An energy storage apparatus of Patent Literature 1 includes a plurality of energy storage devices, a pair of end plates, and a pair of side plates. The plurality of energy storage devices are aligned in one direction, and the end plates are located at both ends of the plurality of energy storage devices. The pair of side plates are located in a direction in which the energy storage devices are aligned such that the energy storage devices are interposed therebetween. Each of both ends of the side plates is joined to the end plate. Thus, the plurality of energy storage devices are fixed by the side plates and the end plates. In the above-described energy storage apparatus, a portion of the end plate is extended to an installation surface, and the extended portion is fixed to the installation surface by means of a bolt. CITATION LIST Patent Literature Patent Literature 1: JP2020-30915 A DISCLOSURE OF INVENTION PROBLEMS TO BE SOLVED BY THE INVENTION Incidentally, the energy storage device swells due to repetition of charge and discharge during its use. Consequently, when the energy storage apparatus is used, a force acts on the end plate due to the swelling of the energy storage devices in a direction in which the energy storage devices are aligned. In the energy storage apparatus of Patent Literature 1, the end plate is fixed to the installation surface. Therefore, when the end plate is deformed due to the swelling of the energy storage device, a force may also act on a portion where the end plate and the installation surface are fixed. This force may present a problem in the installation state, such as the bolt may be damaged. An object of the present invention is to provide an energy storage apparatus capable of suppressing occurrence of a problem in the installation state when the energy storage device swells. MEANS FOR SOLVING THE PROBLEMS An energy storage device according to the present invention includes: a plurality of energy storage devices aligned in a first direction; an end plate located at an end portion of the plurality of energy storage devices in the first direction; and a side plate located at an end portion of the plurality of energy storage devices in a second direction intersecting the first direction, in which the end plate includes an end plate connecting portion connected to the side plate, and the side plate includes: a first part which extends in the first direction; a second part which extends from the first part in the second direction intersecting the first direction and is connected to the end plate connecting portion; and a third part which extends from the second part in the first direction along an installation surface of the energy storage apparatus and is fixed to the installation surface. EFFECT OF THE INVENTION According to the energy storage apparatus of the present invention, it is possible to suppress occurrence of a problem in the installation state when the energy storage device swells. BRIEF DESCRIPTION OF DRAWINGS [FIG. 1] FIG. 1 is a perspective view showing an outer appearance of an energy storage apparatus according to one embodiment of the present invention.[FIG. 2] FIG. 2 is a perspective view of an end plate used in the energy storage apparatus of FIG. 1.[FIG. 3] FIG. 3 is a perspective view of a side plate used in the energy storage apparatus of FIG. 1.[FIG. 4] FIG. 4 is a front view of the energy storage apparatus of FIG. 1 as seen from a front side.[FIG. 5] FIG. 5 is a front view of another example of the energy storage apparatus as seen from the front side. DESCRIPTION OF EMBODIMENTS First, an outline of an energy storage apparatus disclosed in the present specification will be described. (1) An energy storage apparatus according to one embodiment of the present invention includes: a plurality of energy storage devices aligned in a first direction; an end plate located at an end portion of the plurality of energy storage devices in the first direction; and a side plate located at an end portion of the plurality of energy storage devices in a second direction intersecting the first direction, in which the end plate includes an end plate connecting portion connected to the side plate, and the side plate includes: a first part which extends in the first direction; a second part which extends from the first part in the second direction and is connected to the end plate connecting portion; and a third part which extends from the second part in the first direction along an installation surface of the energy storage apparatus and is fixed to the installation surface. According to the energy storage apparatus of one embodiment of the present invention, not the end plate but the third part extending from the side plate and the installation surface are fixed by using, for example, a bolt. Consequently, a force received by the end plate is prevented from directly acting on the