Battery Pack Structure With Integrated Suspension Mounting

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Solution Overview

Problem

The existing process of attaching a rear suspension and a battery pack to a vehicle body is time-consuming, necessitating multiple assembly steps.

Innovation Solution

A battery pack is designed with integrated suspension fixing portions, allowing it to be mounted under the vehicle floor, thereby integrating the battery pack and suspension, reducing assembly steps and time.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If the rear suspension and battery pack are attached separately to the vehicle body, then each component can be independently installed and maintained, but the assembly process becomes time-consuming and complex

Engineering Contradiction:
ImproveIndependent installation and maintenance of componentsVSAvoidAssembly time
Core Design Contradiction:
Ease of manufactureVSLoss of time

Solution Approach 1:

The patent combines the battery pack and rear suspension into a single integrated assembly unit. The battery case serves dual functions as both battery housing and suspension mounting structure, with suspension fixing portions directly formed on the battery case. This merging eliminates the need for separate attachment operations, reducing assembly time while maintaining independent maintainability through modular design.

Inventive Principle:
Principle #5Merging (Combining)

2Productivity

If the battery pack is integrated with the suspension, then assembly steps are reduced and time is saved, but the structural complexity of the battery case increases

Engineering Contradiction:
ImproveAssembly efficiencyVSAvoidBattery case structure
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The battery case is designed with multi-functionality, serving both as battery housing and as suspension mounting structure. The suspension fixing portions are integrated into the battery case structure, allowing the same component to fulfill multiple functions. This approach increases productivity by reducing assembly steps while managing complexity through functional integration rather than adding separate components.

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

3Stability of the object's composition

If multiple attachment points are provided on the vehicle body for both suspension and battery pack, then structural stability is ensured, but the number of assembly operations increases

Engineering Contradiction:
ImproveStructural stabilityVSAvoidNumber of assembly operations
Core Design Contradiction:
Stability of the object's compositionVSDevice complexity

Solution Approach 1:

The patent merges the attachment operations by providing suspension fixing portions directly on the battery case. The battery pack and suspension are attached to the vehicle body as a single integrated unit rather than separately. This reduces the number of assembly operations while maintaining structural stability through the integrated design that ensures proper mounting of both components.

Inventive Principle:
Principle #5Merging (Combining)

Data Source

PatentUS12570133B2Battery pack
Publication Date: 2026.03.10 HONDA MOTOR CO LTD
  • US12570133B2 patent drawing
  • US12570133B2 patent drawing
  • US12570133B2 patent drawing

AI summary

A battery pack which is disposed under a floor of a vehicle includes a plurality of battery cells, and a battery case which accommodates the plurality of battery cells, in which the battery case includes a fixing portion to which a portion of a suspension of the vehicle is fixed.