Battery Pack Sensor Holder for Uniform Cell Temperature Sensing

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Solution Overview

Problem

Existing battery packs face challenges in accurately measuring temperature due to inconsistent placement of temperature sensors, leading to unreliable temperature readings and safety concerns.

Innovation Solution

A battery pack design that includes a holder with an insertion groove and adhesive to securely fix the temperature sensor at a uniform distance from the battery cell, utilizing an elastic material for close contact and a fixing rib to maintain position, ensuring consistent temperature measurement.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Weight of moving object

If a battery pack is designed to be compact and lightweight, then portability and installation space are improved, but heat dissipation capability deteriorates

Engineering Contradiction:

Improvebattery pack weightVSAvoidheat dissipation

Core Design Contradiction:

Weight of moving objectVSTemperature

Solution Approach 1:

The battery pack is divided into multiple battery modules, each with its own heat generation characteristics. This segmentation allows for distributed thermal management where heat can be dissipated from multiple locations rather than concentrated in one area, enabling better heat dissipation in a compact design.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Different regions of the battery pack are designed with different thermal management properties. The patent applies thermal conductive adhesive specifically at critical heat generation points between battery modules and the heat dissipation structure, creating localized high thermal conductivity zones where needed while maintaining overall compactness.

Inventive Principle:

Principle #3Local quality

2Quantity of substance

If battery modules are tightly arranged to increase energy density, then space utilization is improved, but heat accumulation worsens

Engineering Contradiction:

Improvebattery module densityVSAvoidheat accumulation

Core Design Contradiction:

Quantity of substanceVSTemperature

Solution Approach 1:

A heat dissipation structure acts as an intermediary between closely arranged battery modules. This intermediary component provides a thermal conduction pathway that enables heat to transfer from the battery modules to the external environment, allowing tight arrangement without excessive heat accumulation.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent replaces mechanical thermal management approaches (such as large air gaps or complex cooling channels) with a thermal conduction-based system using adhesive layers. This substitution enables efficient heat transfer through the adhesive material while maintaining compact mechanical arrangement of battery modules.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Temperature

If thermal conductive adhesive is applied between battery modules and heat dissipation structure, then heat dissipation is improved, but manufacturing complexity increases

Engineering Contradiction:

Improveheat dissipation efficiencyVSAvoidassembly complexity

Core Design Contradiction:

TemperatureVSEase of manufacture

Solution Approach 1:

The heat dissipation function is merged with the structural bonding function by using thermal conductive adhesive to simultaneously bond battery modules to the heat dissipation structure and conduct heat. This combination eliminates the need for separate thermal interface materials or additional thermal management components, simplifying manufacturing.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The thermal conductive adhesive serves multiple functions: it provides mechanical bonding between components, creates thermal conduction pathways, and fills gaps between surfaces. This multi-functionality reduces the number of separate components needed and simplifies the manufacturing process while achieving effective heat dissipation.

Inventive Principle:

Principle #6Universality (Multi-functionality)

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 design stabilizes the temperature sensor's position, reducing temperature measurement discrepancies and enhancing safety through reliable and fast temperature response.

Implementation Method 1

a heat dissipation structure, and a plurality of thermal conductive adhesives respectively provided between each of the battery modules and the heat dissipation structure

Methodology Applied

Scientific EffectThermal conduction: Conduction (thermal)

Data Source

PatentEP4084188B1Battery pack, electronic device and vehicle

Publication Date: 2026.04.22 LG ENERGY SOLUTION LTD

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AI summary

The present disclosure relates to a battery pack with improved safety through high reliability of temperature measurement of a plurality of battery cells. To achieve the above-described object, the battery pack according to the present disclosure includes a plurality of battery cells, a temperature sensor configured to measure a temperature of at least one of the plurality of battery cells, a module case configured to receive the plurality of battery cells therein, and including a receiving portion having a recessed space in which the temperature sensor is received, and a holder inserted into the recessed space of the receiving portion, having a size that is large enough to fill at least part of the recessed space, and configured to hold the temperature sensor.