Vehicle Power Storage Module Fuse Layout for Short-Circuit Containment
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Solution Overview
Problem
Existing power storage devices fail to interrupt current effectively when a short circuit forms between adjacent power storage modules, and fuses provided between external terminals cannot prevent the spread of heat emissions that may cause further short circuits.
Innovation Solution
The power storage device includes an inter-module fuse on the electrical path between power storage modules, coupled by a coupling bracket, with a heat insulating material and a terminal fuse, and is designed to interrupt high currents and contain heat emissions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If power storage modules are arranged adjacent to each other in the power storage unit, then space utilization is improved, but heat emission from one module can cause short circuit with adjacent modules
Solution Approach 1:
The inter-module fuse serves as a protective intermediary between adjacent power storage modules. When heat emission or short circuit occurs in one module, the fuse interrupts current flow to adjacent modules, preventing thermal propagation and maintaining system safety despite close module spacing.
Solution Approach 2:
The inter-module fuse provides preliminary protective action by being pre-positioned between modules before any short circuit or heat emission occurs. This advance preparation ensures that when thermal or electrical anomalies occur, the fuse is already in place to interrupt current flow and prevent catastrophic failure, allowing modules to be safely arranged in close proximity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution effectively interrupts high currents and contains heat emissions, preventing further short circuits and ensuring safe operation of the power storage unit.
Implementation Method 1
the inter-module fuse is provided on an electrical path between the second terminal and the fourth terminal
Implementation Method 2
a heat insulating material and a terminal fuse, and is designed to interrupt high currents and contain heat emissions
Data Source
AI summary
A power storage device to be mounted on a vehicle includes a power storage unit, an inter-module fuse, a first external terminal, and a second external terminal. The power storage unit includes a first power storage module having a first electrode, and a second power storage module having a second electrode. The first electrode includes a first terminal electrically connected to the first external terminal, and a second terminal. The second electrode includes a third terminal electrically connected to the second external terminal, and a fourth terminal. The second terminal and the fourth terminal are electrically connected. The inter-module fuse is provided on an electrical path between the second terminal and the fourth terminal.