Battery Pack Balancing Wire Fixing via Engaging Catching Portions

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Solution Overview

Problem

Existing battery packs require separate fixing members to secure balancing wires, which can be cumbersome and increase weight, while also potentially causing the wires to become tangled or displaced, affecting the stability and efficiency of the battery pack.

Innovation Solution

The battery pack design incorporates first and second fixing members with catching portions that engage with each other and surround the balancing wires, allowing them to be stably fixed without a separate fixing member, thereby eliminating the need for additional components and reducing the risk of wire tangling.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If separate fixing members are used to secure balancing wires, then the wires can be fixed, but the device complexity and weight increase

Engineering Contradiction:
Improvewire fixation stabilityVSAvoidnumber of fixing components
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The fixing members are integrated into the battery pack structure itself rather than being separate components. The fixing members are formed as part of the battery pack housing, combining the structural support function with the wire fixation function, thereby reducing the number of separate components while maintaining reliable wire securation.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The fixing members serve multiple functions: they provide structural support for the battery cells, create positioning gaps for wire routing, and secure the balancing wires through engagement features. This multi-functionality eliminates the need for dedicated separate fixing components.

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Reliability

If separate fixing members are used to secure balancing wires, then the wires can be fixed, but the weight of the battery pack increases

Engineering Contradiction:
Improvewire fixation stabilityVSAvoidbattery pack weight
Core Design Contradiction:
ReliabilityVSWeight of moving object

Solution Approach 1:

The fixing members are integrated into the battery pack structure itself rather than being separate components. The fixing members are formed as part of the battery pack housing, combining the structural support function with the wire fixation function, thereby reducing the number of separate components while maintaining reliable wire securation.

Inventive Principle:
Principle #5Merging (Combining)

3Device complexity

If balancing wires are not securely fixed, then the structure is simpler, but the wires become tangled or displaced affecting stability

Engineering Contradiction:
Improvefixing structure complexityVSAvoidwire position stability
Core Design Contradiction:
Device complexityVSReliability

Solution Approach 1:

The fixing members are designed to automatically secure the balancing wires through their engagement features without requiring additional fastening operations. The wires are routed through gaps and held in place by the structural design of the fixing members themselves, making the fixation process self-completing and reliable.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The fixing members act as intermediaries between the battery pack structure and the balancing wires. They provide dedicated routing paths and engagement features that mediate the connection, ensuring wires remain properly positioned without direct attachment to the main structure.

Inventive Principle:
Principle #24Intermediary (Mediator)

Data Source

PatentUS9935340B2Battery pack
Publication Date: 2018.04.03 SAMSUNG SDI CO LTD
  • US9935340B2 patent drawing
  • US9935340B2 patent drawing
  • US9935340B2 patent drawing

AI summary

A battery pack is disclosed. In one aspect, the battery pack includes rechargeable batteries each having first and second terminals opposing each other and first and second fixing members each having catching portions respectively positioned at opposite sides of the rechargeable batteries and extending toward a center of the rechargeable batteries. Each of the catching portions has first and second ends opposing each other, and a gap is formed between the catching portions and the rechargeable batteries. The battery pack also includes a plurality of balancing wires and a protective circuit configured to protect the rechargeable batteries from overcharge or overdischarge. The catching portions of the first fixing member and the respective catching portions of the second fixing member are engaged and fixed with respect to each other, and wherein one or more of the balancing wires pass through the gap.