Vehicle Battery Mounting via Vertical Coupling Device
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Solution Overview
Problem
In electric vehicles, the vibration of the battery assembly mounted on the vehicle's bottom surface leads to degraded ride comfort and noise generation due to transmitted vibrations.
Innovation Solution
A vehicle body design that integrates a battery case, lower panel, and seat cross member through a coupling device, including a battery pipe and mounting bolt, which passes through the battery cross member in a vertical direction to securely couple the components, reducing vibration and noise.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the battery assembly is coupled to the bottom surface of the vehicle, then the battery can be securely mounted and powered, but vibration is transmitted to the vehicle body degrading ride comfort and noise is generated
Solution Approach 1:
The patent introduces a coupling device as an intermediary component between the battery assembly and the vehicle body. This coupling device includes vibration isolation elements that act as mediators to reduce the transmission of vibration and noise from the battery to the vehicle body, while still maintaining secure mounting
Solution Approach 2:
The patent applies vibration cushioning elements in advance within the coupling device structure. These elements are pre-installed to provide vibration isolation before the vibration transmission occurs, cushioning the impact and reducing the transmission of harmful vibrations to the vehicle body
2Strength
If conventional welding processes are used to connect the battery case, lower panel, and seat cross member, then strong structural connection is achieved, but manufacturing complexity and production time increase
Solution Approach 1:
The patent replaces the welding process (thermal/chemical system) with a mechanical coupling device system. The coupling device uses mechanical fastening methods such as bolts or clips to connect the battery case, lower panel, and seat cross member, eliminating the need for welding operations while maintaining connection strength
Solution Approach 2:
The patent divides the connection system into separate modular components: the battery case, the lower panel, the seat cross member, and the coupling device. This segmentation allows each component to be manufactured independently and assembled through mechanical means, simplifying the manufacturing process compared to integrated welding
Data Source
AI summary
Disclosed herein is a vehicle body with a battery connected thereto including a lower panel of a vehicle which extends in a horizontal direction, and to which a battery case in which a battery is provided in an upper portion or a lower portion is coupled, a seat cross member configured to extend in a direction parallel to a transverse direction of the vehicle and located on an upper surface or a lower surface of the lower panel, a battery cross member provided in the battery case, configured to extend in the direction parallel to the transverse direction of the vehicle, and located to correspond to the seat cross member in a vertical direction of the vehicle, and a coupling device configured to simultaneously pass through to couple the lower panel, the seat cross member, and the battery cross member in the vertical direction of the vehicle.