EV Battery Pack Mounting Below Longitudinal Beams for Stable Swapping
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Solution Overview
Problem
The high center of gravity of battery packs in electric trucks due to their placement above the longitudinal beam leads to poor stability, increased space occupation, and high maintenance costs, along with safety concerns and inefficient battery swapping processes.
Innovation Solution
A battery swapping system for electric vehicles that uses two longitudinal beams with locking mechanisms and grooves to secure the battery pack below the beam, enhancing stability and space utilization, and incorporating guiding and positioning mechanisms for precise battery placement and swapping.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the battery pack is installed above the longitudinal beam, then the battery swapping process is simplified, but the center of gravity of the battery pack becomes high and vehicle stability deteriorates
Solution Approach 1:
The patent inverts the conventional battery mounting position from above the longitudinal beam to below the longitudinal beam. This inversion resolves the contradiction by achieving both simplified swapping operations and improved vehicle stability through lower center of gravity, eliminating the need for complex hoisting structures while enhancing safety.
2Productivity
If the battery pack is installed above the longitudinal beam, then the battery can be directly swapped, but the space behind the driver is occupied and driving experience deteriorates
Solution Approach 1:
By inverting the battery pack position to below the longitudinal beam, the patent frees up the space behind the driver for driver comfort and cargo purposes, while maintaining efficient battery swapping capability through the simplified chassis-level mounting approach.
3Ease of operation
If a hoisting structure is used for battery swapping, then the battery pack can be swapped, but the battery swapping station has large height and floor area and maintenance cost increases
Solution Approach 1:
The patent extracts the complex hoisting structure from the battery swapping system by mounting the battery pack directly to the chassis below the longitudinal beam. This eliminates the need for lifting mechanisms, reducing the battery swapping station's height and floor area requirements while lowering maintenance costs.
Solution Approach 2:
The battery pack is designed with self-aligning features including guide rails and positioning structures that enable automatic alignment with the mounting location during swapping, eliminating the need for complex positioning systems and hoisting equipment.
4Ease of manufacture
If the battery pack is installed above the longitudinal beam, then the battery can be mounted, but the center of gravity is high and safety deteriorates
Solution Approach 1:
The patent inverts the mounting position from above to below the longitudinal beam, achieving both ease of manufacture through direct chassis mounting and improved safety through lower center of gravity, eliminating the need for complex overhead mounting structures.
Data Source
AI summary
The invention discloses a battery swapping system for an electric vehicle, an electric vehicle and a battery swapping method for an electric vehicle, and the electric vehicle comprises two longitudinal beams, the battery swapping system comprises a battery pack and a plurality of locking mechanisms, and the plurality of locking mechanisms are respectively arranged on the two longitudinal beams, and the top of the battery pack is provided with a groove, and the groove is used for embedding the longitudinal beam, and the battery pack is provided with a plurality of locking members, and the plurality of locking members are located in the groove, and the battery pack is connected with the longitudinal beams by the plurality of locking members locked in the plurality of locking mechanisms.