Bottom-Mounted Battery Swapping Assembly Without Vehicle Lifting
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Solution Overview
Problem
Existing electric vehicle battery swapping technologies face challenges such as high difficulty, cost, and safety hazards due to the need to lift vehicles or dig holes for battery replacement, especially for heavy trucks, which complicates the swapping process and requires significant site preparation.
Innovation Solution
An electric vehicle battery swapping assembly where the battery swapping equipment and pack are positioned at the bottom of the vehicle, allowing for swapping without lifting the vehicle or digging holes, with the equipment and vehicle operating on the same plane, enabling efficient and safe battery exchange on the ground.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the battery pack is installed at the bottom of the vehicle, then the center of gravity is lowered improving safety, but it requires raising the vehicle or digging holes for battery swapping equipment to access, leading to high cost and construction difficulty
Solution Approach 1:
Instead of raising the vehicle or digging holes to access the battery from below, the invention inverts the approach by having the battery swapping equipment rise from below the ground level. The equipment is positioned in a pit or depression in the ground, and the battery pack is designed to engage with the swapping mechanism that emerges upward, allowing the battery to be accessed from the bottom while keeping the vehicle on level ground.
Solution Approach 2:
The invention transitions from vertical vehicle lifting to vertical equipment emergence by creating a subsurface swapping station. The battery swapping equipment is positioned in a pit below ground level, and the battery pack engagement mechanism rises vertically from this pit to meet the battery pack, effectively moving the swapping action to a different vertical dimension without affecting the vehicle's position.
2Reliability
If the battery pack is installed at the bottom of the vehicle, then safety is improved, but the swapping process requires complex site preparation including digging holes and raising vehicles
Solution Approach 1:
The invention inverts the traditional swapping approach by having the swapping equipment emerge from below ground rather than having the vehicle lifted or the site prepared with large excavations. The equipment in the pit rises to engage the battery, simplifying the overall process while maintaining bottom-mounted battery safety benefits.
Solution Approach 2:
The battery swapping system is designed to be self-aligning and self-engaging. The battery pack includes positioning features and engagement mechanisms that automatically align with the swapping equipment as it rises from the pit, eliminating the need for complex alignment procedures or manual intervention during the swapping process.
3Ease of operation
If heavy lifting equipment is used to raise the vehicle for battery swapping, then battery access is enabled, but the cost and difficulty increase significantly for heavy trucks
Solution Approach 1:
Instead of using heavy lifting equipment to raise the vehicle, the invention inverts the approach by having lightweight swapping equipment rise from a pit to meet the battery pack. This eliminates the need for expensive heavy-duty vehicle lifting equipment while still enabling bottom-mounted battery access.
Solution Approach 2:
The invention replaces the mechanical vehicle lifting system with a hydraulic or pneumatic actuation system positioned in the ground pit. The actuator raises the battery engagement mechanism vertically to meet the battery pack, substituting complex mechanical lifting with a simpler, more cost-effective actuation system.
4Ease of operation
If large area ground excavation is performed for battery swapping equipment, then equipment access is enabled, but the vehicle may collapse when passing through the area
Solution Approach 1:
The invention inverts the excavation approach by creating a controlled pit for the swapping equipment rather than large-area ground removal. The pit is strategically positioned and sized to accommodate only the necessary equipment, and the surrounding ground is reinforced to prevent collapse, allowing equipment access while maintaining vehicle safety.
Solution Approach 2:
The ground structure is modified locally only where necessary - a controlled pit is excavated at the specific battery swapping location, while the surrounding ground remains intact and reinforced. This localized modification provides equipment access without compromising the overall ground stability and vehicle safety.
Data Source
AI summary
Discloses an electric vehicle battery swapping assembly and battery swapping station. An electric vehicle battery swapping assembly comprises a battery swapping equipment and a battery pack box, both the battery swapping equipment and the battery pack box are arranged at the bottom of the electric vehicle, and the battery pack box is removed or installed from the bottom of the electric vehicle by means of the battery swapping equipment, during the removal or installation process, the height of the electric vehicle is unchanged, and the bearing plane for carrying the battery swapping equipment and the bearing plane for carrying the electric vehicle are in the same plane. The invention does not need to lift the vehicle or dig a hole on the ground to set up the battery swapping equipment, which improves the safety of the battery swapping station and can improve the battery swapping efficiency.