DE-102025126450-A1 - ENERGY STORAGE DEVICE

Abstract

An energy storage device comprises: a battery pack with a pressure relief valve; a tube through which a cooling medium flows for cooling the battery pack, the tube being connected to the battery pack; a wire being connected to the battery pack; and a bracket supporting either the tube or the wire, or both. The bracket is attached to the battery pack such that it is located adjacent to the pressure relief valve. The bracket includes a shielding plate located between the pressure relief valve and either the tube or the wire, or both, attached to the bracket, the shielding plate being designed to block gas escaping from the pressure relief valve.

Inventors

• Kenji Baba

Assignees

• TOYOTA JIDOSHA KABUSHIKI KAISHA

Dates

Publication Date

20260513

Application Date

20250707

Priority Date

20241111

Claims (4)

1. Energy storage device comprising: a battery pack with a pressure relief valve; a tube through which a cooling medium flows for cooling the battery packs, the tube being connected to the battery pack; a wire being connected to the battery pack; and a bracket supporting either the tube or the wire or both, wherein: the bracket is attached to the battery pack such that it is adjacent to the pressure relief valve; and the bracket includes a shielding plate positioned between the pressure relief valve and either the tube or the wire or both attached to the bracket, the shielding plate being designed to block gas escaping from the pressure relief valve.
2. Energy storage device according to Claim 1 , wherein: both the tube and the wire are attached to the bracket; the shielding plate comprises a stepped section projecting towards the pressure relief valve; and one of the tube and the wire is arranged below the stepped section and the other of the tube and the wire is arranged above the stepped section.
3. Energy storage device according to Claim 2 , wherein the shielding plate extends to a position below the pressure relief valve and includes a base plate projecting from a lower end of the shielding plate towards the pressure relief valve.
4. Energy storage device according to one of the Claims 1 until 3 , wherein: the battery pack comprises a substantially cuboid battery module and a projecting section extending upwards at one end of the battery module; and several of the battery packs are stacked in a top-bottom direction and received in a housing such that the projecting sections are arranged alternately on opposite outer sides.

Description

BACKGROUND OF THE INVENTION 1. Field of the invention The present disclosure relates to energy storage devices. 2. Description of the state of the art The JP 2001-015090 ( JP 2001-015090 A) discloses a stationary energy storage device in which several battery packs are stacked in an up-down direction and enclosed in a box-shaped housing. BRIEF SUMMARY OF THE INVENTION The inventors have developed an energy storage device in which a battery pack includes a pressure relief valve. A pipe, through which a cooling medium flows to cool the battery packs, and a wire connected to the battery pack are located around the battery packs. Therefore, there is a certain risk that the pipe and wire, located near the pressure relief valve, could be damaged by high-temperature gas vented by the valve. The present disclosure was made in view of the above circumstances and provides an energy storage device in which a tube or wire arranged near a pressure relief valve is less likely to be damaged by gas escaping from the pressure relief valve. An energy storage device according to one aspect of the present disclosure comprises: a battery pack with a pressure relief valve; a pipe through which a cooling medium flows to cool the battery packs, the pipe being connected to the battery pack; a wire connected to the battery pack; and a bracket that supports either the pipe or the wire, or both. The bracket is attached to the battery pack so that it is positioned adjacent to the pressure relief valve. The bracket includes a shielding plate that is positioned between the pressure relief valve and either the tube or the wire, or both, attached to the bracket. The shielding plate is designed to block gas escaping from the pressure relief valve. In the energy storage device of the present disclosure, the bracket supporting either the tube or the wire, or both, is attached to the battery pack such that it is located adjacent to the pressure relief valve. The bracket includes the shielding plate, which is positioned between the pressure relief valve and either the tube or the wire, or both, attached to the bracket. The shielding plate is designed to block gas escaping from the pressure relief valve. With this configuration, it is less likely that the tube or the wire, or both, located near the pressure relief valve, will be damaged by gas escaping from the pressure relief valve. Both the tube and the wire can be attached to the bracket. The shielding plate can include a stepped section that projects towards the pressure relief valve. One of the tube and wire can be positioned below the stepped section, and the other can be positioned above it. The shielding plate can extend to a position below the pressure relief valve and can include a base plate that projects from a lower end of the shielding plate towards the pressure relief valve. The battery pack can comprise an essentially cuboid battery module and a protruding section extending upwards from one end of the battery module. Several of the battery packs can be stacked in a top-to-bottom orientation and housed in a casing, so that the protruding sections are alternately arranged on opposite outer surfaces. The present disclosure can provide an energy storage device in which it is less likely that a tube or wire located near a pressure relief valve will be damaged by gas escaping from the pressure relief valve. BRIEF DESCRIPTION OF THE DRAWINGS The following describes the features, advantages, and technical and industrial significance of exemplary embodiments of the invention with reference to the accompanying drawings, in which the same reference numerals denote the same elements and wherein: 1 is a sectional view showing the overall configuration of an energy storage device according to a first embodiment; 2 is a perspective view of a battery pack 20; 3 is a perspective view showing a bracket 40 in the energy storage device according to the first embodiment; 4 is an XY sectional view of bracket 40; and 5 is a cross-sectional view along a line VV in 4 . DETAILED DESCRIPTION OF EXECUTIONS A specific embodiment of the present disclosure is described in detail below with reference to the drawings. It should be noted that the present disclosure is not limited to the following embodiment. For the sake of clarity, the following description and drawings have been simplified where necessary. First embodiment Overall configuration of the energy storage device First, the overall configuration of an energy storage device according to a first embodiment is described with reference to 1 described. 1 Figure 1 is a sectional view showing the overall configuration of the energy storage device according to the first embodiment. It should be noted that the in 1 The right-handed orthogonal XYZ coordinate system shown is used for simplicity only to illustrate the spatial relationship between the components. 1 The positive Z-axis direction is generally a vertical upward direction, and an XY plane is a horizon