Battery Pack Removable Cap and Resilient Contacts

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Solution Overview

Problem

Existing accumulator packs for heating elements, typically housed in rigid cases, face challenges with mechanical stress and weather exposure, making battery replacement inconvenient and costly, and prone to damage.

Innovation Solution

A battery pack design featuring a housing shell with a removable cap that includes a control circuit and a flexible or rigid cover, providing protection against mechanical and weather influences, with resilient contact elements for maintaining power supply during impacts and a short-circuit protection circuit for safety, along with a non-volatile memory for maintaining operating state.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If a rigid housing is used to protect the battery pack, then mechanical strength is improved, but ease of battery replacement deteriorates and cost increases

Engineering Contradiction:
Improvemechanical strengthVSAvoidease of battery replacement
Core Design Contradiction:
StrengthVSEase of operation

Solution Approach 1:

The housing is divided into a modular structure with a removable cap that can be easily detached to access and replace batteries. This segmentation allows the protective housing to maintain its structural integrity while enabling convenient battery replacement through the removable cap component.

Inventive Principle:
Principle #1Segmentation

2Strength

If a rigid housing is used to protect the battery pack, then protection against mechanical stress is improved, but susceptibility to damage from mechanical stress worsens

Engineering Contradiction:
Improveprotection against mechanical stressVSAvoidresistance to damage
Core Design Contradiction:
StrengthVSReliability

Solution Approach 1:

The patent employs a flexible sleeve made of elastomer material that covers and protects the battery pack. This flexible protective layer absorbs mechanical stresses and impacts, preventing damage to the internal components while maintaining the overall structural integrity of the housing.

Inventive Principle:
Principle #30Flexible shells and thin films

3Reliability

If resilient contact elements are used to maintain power supply during impacts, then reliability of power supply is improved, but device complexity increases

Engineering Contradiction:
Improvecontinuity of power supplyVSAvoidcontact element design
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The contact elements are designed with resilient properties that allow them to elastically deform and maintain electrical contact under varying mechanical conditions. This parameter change in the contact elements' physical state enables them to absorb impacts and ensure continuous power supply without requiring complex additional mechanisms.

Inventive Principle:
Principle #35Parameter changes

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 ensures secure, easy battery replacement, protection against mechanical and weather stress, and continuous power supply with elastic contact elements, while preventing damage through short-circuit protection and maintaining functionality during mechanical shocks.

Implementation Method 1

the resilient contact elements yield elastically and the power supply is maintained essentially without interruption

Methodology Applied
Scientific EffectElasticity: Elasticity

Data Source

PatentEP1950820B1Battery pack
Publication Date: 2010.08.04 THERM IC PRODS NFG
  • EP1950820B1 patent drawingFigure 1~3

AI summary

A battery pack for supplying electrical components is proposed, comprising a plurality of rechargeable batteries (3) housed in a casing and a control circuit located on a printed circuit board (6). The casing has a housing shell (2) open on one side with a housing cap (5) that accommodates the control circuit. The entire housing shell and cap assembly is enclosed in a cover.