Stepped Vehicle Battery Mounting Structure for Capacity and Comfort
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Solution Overview
Problem
Existing battery mounting structures in vehicles face a trade-off between increasing battery capacity and maintaining passenger compartment comfort, as raising the floor panel to accommodate more batteries disrupts the seating position and comfort of rear seat passengers.
Innovation Solution
A battery mounting structure with multiple groups of batteries stacked at varying heights, where the second group is lower than the first and the third group is higher, allowing for efficient use of space under the seats while maintaining passenger comfort by adjusting the seating levels and center of gravity for weight balance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the floor panel is raised to accommodate more batteries, then the battery mounting capacity increases, but the passenger comfort deteriorates due to raised foot position
Solution Approach 1:
The patent transitions from a uniform two-dimensional battery arrangement to a three-dimensional stepped configuration with varying heights. The first group of batteries has a first height, the second group has a second height lower than the first, and the third group has a third height higher than the first, creating vertical dimensionality that increases storage capacity without raising the floor panel uniformly.
Solution Approach 2:
Different regions of the battery mounting structure are assigned different heights based on local requirements. The first group region maintains higher height for capacity, the second group region lowers height to preserve passenger foot space, and the third group region raises height again for additional capacity. This localized variation resolves the contradiction between overall capacity and local comfort.
2Device complexity
If batteries are arranged uniformly at the same height, then the structure is simple, but the space utilization is inefficient
Solution Approach 1:
The invention introduces vertical height variation as a third dimension to the battery arrangement. Instead of all batteries being at the same height level, the structure creates stepped levels with the second group lower than the first and third groups higher, effectively utilizing vertical space that would otherwise be wasted, thereby improving space utilization without excessive structural complexity.
Data Source
AI summary
A vehicle (1) comprises a passenger compartment (2) in which a front seat (32F), a rear seat (32R), and a floor (33) between the front seat (32F) and the rear seat (38R) are provided. A first group (S1) of batteries (3) is mounted under the front seat (32F), a second group (S2) of the batteries (3) is mounted under the floor (33), and a third group (S3) of the batteries (3) is mounted under a rear seat (32R). By setting a height (h2) of the second group (S2) of the batteries (3) to be lower than respective heights (h1, h3) of the first and third groups (S1, S3) of the batteries (3), a battery mounting capacity of the vehicle (1) can be increased without affecting the comfort of the passenger compartment (2).