Power Storage Module Thermistor Mounting on Separator
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Solution Overview
Problem
Existing power storage modules face challenges in uniform cooling and extended battery life due to interference from thermistor holding portions with cooling mediums, leading to varying leak amounts and non-uniform cooling states.
Innovation Solution
A power storage module design with temperature measuring components held on terminal surfaces between positive and negative terminals, utilizing a temperature measuring component guide mechanism to orient the thermistor insertion direction and prevent interference with cooling air passages, ensuring efficient cooling and compact configuration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If thermistor holding portions are provided on battery cells to measure temperature, then temperature measurement capability is improved, but cooling medium leakage increases and cooling uniformity deteriorates
Solution Approach 1:
The temperature measuring component is extracted from the battery cell structure and relocated to the separator. The separator, which is a non-active insulating component, is modified to include the temperature measuring component holding portion. This extraction eliminates the interference between thermistor holding portions and cooling mediums while preserving temperature measurement capability, as the separator does not participate in electrochemical reactions and can be modified without affecting battery performance.
Solution Approach 2:
The separator serves as an intermediary structure that bridges the temperature measurement function and the battery cell structure. By placing the temperature measuring component on the separator rather than directly on the battery cell, the patent creates a mediating position that allows temperature measurement while preventing interference with cooling medium flow. The separator acts as a neutral platform that does not obstruct cooling passages.
2Measurement precision
If temperature measuring components are mounted on battery cells, then temperature monitoring is improved, but device complexity increases due to interference with cooling passages
Solution Approach 1:
The temperature measuring component is extracted from the battery cell assembly and relocated to the separator structure. This extraction simplifies the overall device design by eliminating the need for complex routing arrangements and interference management between thermistors and cooling passages. The separator-based mounting provides a straightforward, integrated solution that reduces device complexity.
3Measurement precision
If thermistors are installed on battery cells for temperature control, then temperature regulation capability is improved, but installation and detachment difficulty increases
Solution Approach 1:
The temperature measuring component is extracted and mounted on the separator, which can be independently accessed and manipulated. This relocation simplifies installation and detachment operations, as the separator can be easily removed or adjusted without disassembling battery cell components. The holding portion on the separator provides a convenient mounting point that facilitates straightforward assembly and maintenance operations.
Data Source
AI summary
A power storage module includes storage batteries, separators, a temperature measuring component, and a temperature measuring component holder. Each of the storage batteries includes a terminal surface, a positive terminal, and a negative terminal. The positive terminal and the negative terminal are provided on the terminal surface. The temperature measuring component is to measure a temperature of a measured storage battery among the storage batteries. The temperature measuring component holder is provided on a terminal surface side of the measured storage battery between the positive terminal and the negative terminal of the measured storage battery to hold the temperature measuring component. The temperature measuring component holder includes a temperature measuring component guide via which the temperature measuring component is inserted into the temperature measuring component holder in a direction from the positive terminal toward the negative terminal or in a direction from the negative terminal toward the positive terminal.