Power Tool Battery Pack Temperature Sensor Mounting Structure

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Solution Overview

Problem

Existing battery packs for power tools lack a secure mounting mechanism for temperature detection apparatuses, leading to potential detachment and instability.

Innovation Solution

The battery pack incorporates a detection support to fix the temperature detection apparatus in place, using a fixing hole and adhesive for secure attachment, and includes a reinforcement member to enhance the flexible circuit board's strength.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the temperature detection apparatus is directly inserted on the cell support without a secure mounting mechanism, then the device complexity is reduced, but the reliability of temperature detection deteriorates due to potential detachment and instability

Engineering Contradiction:
Improvetemperature detection stabilityVSAvoidmounting structure complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

A detection support is introduced as an intermediary component between the cell support and the temperature detection apparatus. The detection support includes a fixing hole that receives and secures the temperature detection apparatus, preventing direct insertion while maintaining structural simplicity. This intermediary element resolves the contradiction by providing reliable mounting without significantly increasing overall device complexity.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Reliability

If the temperature detection apparatus is firmly mounted using adhesive in the fixing hole, then the reliability of temperature detection is improved, but the ease of repair deteriorates due to difficulty in detachment and replacement

Engineering Contradiction:
Improvetemperature detection stabilityVSAvoidtemperature detection apparatus replacement
Core Design Contradiction:
ReliabilityVSEase of repair

Solution Approach 1:

The mounting system is designed with dynamic characteristics, allowing the temperature detection apparatus to be detachably fixed rather than permanently bonded. The detection support structure enables the apparatus to be securely held during operation but can be removed when needed for repair or replacement, transforming a static permanent mounting into a dynamic reversible connection.

Inventive Principle:
Principle #15Dynamics

3Volume of moving object

If the flexible circuit board is made thinner to reduce device volume, then the volume of the battery pack is reduced, but the strength of the flexible circuit board deteriorates making it more prone to damage

Engineering Contradiction:
Improvebattery pack volumeVSAvoidflexible circuit board strength
Core Design Contradiction:
Volume of moving objectVSStrength

Solution Approach 1:

The flexible circuit board utilizes composite material construction, combining flexible substrate materials with reinforcing elements. This composite approach allows the circuit board to maintain thin profile for reduced volume while incorporating strength-enhancing components that prevent damage, resolving the contradiction between miniaturization and structural integrity.

Inventive Principle:
Principle #40Composite materials

Data Source

PatentUS20250337032A1Battery pack for powering a power tool
Publication Date: 2025.10.30 NANJING CHERVON IND
  • US20250337032A1 patent drawing
  • US20250337032A1 patent drawing
  • US20250337032A1 patent drawing

AI summary

A battery pack for powering an electronic device is provided. The battery pack for powering an electronic device includes a housing assembly, a cell module, at least one temperature detection apparatus, and a detection support. The housing assembly is mounted to the electronic device and supported by the electronic device. The cell module includes multiple cells and a cell support supporting the multiple cells, where the cell module is disposed in the housing assembly. Multiple temperature detection apparatuses are configured to detect temperatures of the multiple cells. The detection support is configured to support a temperature detection apparatus to cause the position of the temperature detection apparatus in the housing assembly to be fixed.