Dual-Material Battery Pack Housing for Flame and Impact Protection
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Solution Overview
Problem
Existing battery packs for electrically driven processing devices lack effective flame and impact protection, and there is a need for improved protection mechanisms that do not compromise on weight or mobility.
Innovation Solution
A battery pack design featuring a dual-housing component system, where the flameproof housing component is made with flame-retardant materials and the impact protection housing component is made with different impact-resistant materials, with power contacts positioned within the flameproof housing to provide both flame and impact protection without increasing weight or complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single housing component is used for the battery pack, then the device complexity is reduced, but the flame protection and impact protection cannot be simultaneously optimized
Solution Approach 1:
The housing is divided into two separate components: a flame-retardant housing component and an impact-resistant housing component. This segmentation allows each component to be optimized for its specific protective function without compromising the other, thereby simultaneously improving flame protection and impact protection while maintaining reasonable device complexity.
Solution Approach 2:
The housing combines two different materials with distinct properties: a flame-retardant material for the flame-retardant housing component and an impact-resistant material for the impact-resistant housing component. This composite material approach enables the battery pack housing to achieve both flame resistance and impact resistance, resolving the contradiction between protective reliability and material optimization.
2Reliability
If power contacts are positioned in the impact-resistant housing component area, then impact protection is improved, but flame protection is compromised
Solution Approach 1:
The power contacts are strategically positioned in the area of the flame-retardant housing component rather than the impact-resistant housing component. This local quality assignment ensures that the power contacts benefit from the flame-retardant properties of the housing material surrounding them, providing optimized flame protection at the specific location where electrical contacts are needed.
Solution Approach 2:
The flame-retardant housing component acts as an intermediary protective layer between the power contacts and flame hazards. By positioning the power contacts within this intermediate zone, the housing component provides dedicated flame protection to the electrical contacts without requiring them to be directly embedded in the impact-resistant material.
3Reliability
If additional protective components are added to the battery pack, then flame protection and impact protection are improved, but the weight and portability are reduced
Solution Approach 1:
The flame-retardant housing component and the impact-resistant housing component are merged to form an integrated housing structure for the battery pack. This merging approach combines the protective functions of two different materials into a unified housing system, providing both flame protection and impact protection without requiring separate additional protective components, thereby minimizing weight increase while maximizing protection level.
Data Source
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AI summary
The invention relates to a battery pack (1), wherein the battery pack (1) comprises: - several pack power contacts (2a, 2b), wherein the pack power contacts (2a, 2b) are designed with contact points (2aB, 2bB) for user-releasable contact with device power contacts (3a, 3b) of an electrically driven processing device (4) for supplying the processing device (4) with electrical drive power (AL) from the battery pack (1), and - a pack housing (5), wherein the pack housing (5) comprises at least one flame-resistant housing component (6) and at least one impact-resistant housing component (7), - wherein the at least one flame-resistant housing component (6) comprises at least one flame-resistant material (6M) for flame protection of the battery pack (1), - wherein the at least one impact-resistant housing component (7) comprises at least one material other than the flame-resistant material (6M). Impact protection material (7M) for impact protection of the battery pack (1) has,and - wherein the contact points (2aB, 2bB) are located in the area of the at least one flame-resistant housing component (6) and not the at least one impact-resistant housing component (7).