Electric Vehicle Battery Case Covering Motor to Lower Center of Gravity
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Solution Overview
Problem
The high placement of batteries in electric vehicles increases the vehicle's center of gravity, degrading driving stability.
Innovation Solution
The battery case is designed to cover the electric motor above and forward, with a configuration that lowers the center of gravity by placing the battery case's lower end below the pivot shaft and upper end below the seat, allowing for improved stability and easier steering.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the size of the batteries is increased to increase the cruising distance, then the energy storage capacity is improved, but the center of gravity of the vehicle body becomes higher, degrading driving stability
Solution Approach 1:
The patent transitions from a conventional horizontal battery arrangement to a vertical arrangement, placing batteries in the upper portion of the vehicle body. This dimensional change allows the batteries to occupy vertical space rather than horizontal space, enabling increased energy storage capacity without expanding the vehicle's footprint and maintaining a lower center of gravity for improved stability.
Solution Approach 2:
The patent proactively designs the battery case with a specific shape that covers the electric motor above and forward, positioning the battery case's lower end below the pivot shaft and upper end below the seat. This preliminary design action ensures the center of gravity is lowered before the vehicle operates, preventing stability issues rather than correcting them later.
2Stability of the object's composition
If the battery case is designed to cover the electric motor above and forward with a specific shape, then the center of gravity is lowered to improve driving stability, but the device complexity increases
Solution Approach 1:
The battery case is designed to serve multiple functions simultaneously: it accommodates the batteries, covers the electric motor for protection, and acts as a structural component that positions the battery case's lower end below the pivot shaft and upper end below the seat. This multi-functionality reduces the need for separate protective components, thereby managing complexity while achieving the stability goal.
Solution Approach 2:
The patent merges the battery accommodation function with the motor protection function by designing the battery case to cover both components. The battery case and motor case are integrated in design, with the battery case's shape specifically configured to provide protection while maintaining the center of gravity at an optimal position for stability.
3Stability of the object's composition
If the battery case shape is optimized to improve stability and handling, then the driving performance is enhanced, but the ease of manufacture decreases
Solution Approach 1:
The battery case is designed as a modular component that can be manufactured separately and then assembled with the motor case. The battery case's specific shape, which covers the electric motor above and forward, is achieved through segmented design that allows for standardized manufacturing processes while maintaining the complex overall configuration needed for optimal center of gravity positioning.
Data Source
AI summary
An electric vehicle comprises an electric motor which generates a driving power for driving a wheel; and a battery case accommodating a plurality of batteries storing DC power to be supplied to the electric motor, in a battery space in an interior of the battery case, wherein the battery case has a shape which covers the electric motor above and forward.