Energy storage device
The power storage device addresses heat generation issues by optimizing gas flow through a shorter distance between the breathing membrane and pressure relief valve, effectively reducing heat and blast risks in battery packs.
JP2026113707AActive Publication Date: 2026-07-07TOYOTA JIDOSHA KK
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- TOYOTA JIDOSHA KK
- Filing Date
- 2026-04-14
- Publication Date
- 2026-07-07
AI Technical Summary
Technical Problem
In existing battery packs, heat generation is promoted when air comes into contact with gas generated from a battery cell, leading to potential overheating issues.
Method used
A power storage device with multiple modules arranged in a line, featuring a case with a pressure relief valve and a breathing membrane, where the distance between the breathing membrane and the pressure relief valve is shorter than the distance between the exhaust port and the pressure relief valve, thereby controlling gas flow and reducing heat generation.
Benefits of technology
This configuration suppresses the promotion of heat generation within the case by minimizing the movement of air and reducing blast generation, thus enhancing safety and performance.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure 2026113707000001_ABST
Abstract
To provide an energy storage device that can suppress the promotion of heat generation within the case. [Solution] The energy storage device 1 comprises a plurality of energy storage modules 101, a case, a pressure relief valve 600, and a breathing membrane 700. Each of the plurality of energy storage modules 101 has an exhaust port h for discharging gas. The distance D1 between the breathing membrane 700 and the pressure relief valve 600 is smaller than the distance D2 between the exhaust port h and the pressure relief valve 600.
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