Detachable EV Battery Pack Connector Layout for Quick Swapping
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional electric vehicles face inefficiencies in fuel economy due to the difficulty in attaching and detaching battery systems, particularly when traveling short and long distances, as they often require high-energy and heavy batteries, which affects vehicle performance.
Innovation Solution
A battery system for electric vehicles that allows for quick and easy battery replacement by detachable battery packs with a connector arrangement that facilitates parallel attachment and detachment, optimizing the arrangement of components to accommodate varying energy demands while maintaining the battery pack's overall-width direction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If a high-energy and heavy battery is installed in the vehicle to prepare for battery energy required for vehicle operation, then the vehicle can operate for long distances, but the vehicle fuel economy deteriorates when traveling short distances
Solution Approach 1:
The battery system is divided into multiple detachable battery packs that can be independently attached or detached from the vehicle. This segmentation allows the vehicle to carry only the necessary battery capacity for each specific trip, rather than always carrying a large high-energy battery, thereby improving fuel economy while maintaining adequate operating range when needed
Solution Approach 2:
The battery system enables dynamic adjustment of battery capacity by allowing users to attach or detach battery packs based on real-time travel needs. The vehicle can transition between different battery configurations (e.g., single pack for short trips, multiple packs for long trips), making the energy carrying capacity adaptive rather than fixed
2Reliability
If the battery system uses a conventional attachment structure, then the battery can be securely mounted, but it becomes difficult to attach and detach the battery system
Solution Approach 1:
The connector is integrated directly into the battery pack structure, merging the electrical connection function with the mechanical attachment function. This unified design allows the battery pack to be attached and detached as a single unit with the connector automatically engaging or disengaging, simultaneously ensuring secure mounting and ease of operation without requiring separate connection steps
3Reliability
If the connector is arranged perpendicular to the attachment direction, then the electrical connection can be established, but additional connector work is required during battery replacement
Solution Approach 1:
The connector arrangement merges the mechanical attachment motion with the electrical connection motion by positioning the connector to engage in the same direction as battery pack attachment. This unified action eliminates separate connector operations, allowing battery replacement to be completed in a single attachment/detachment motion while maintaining reliable electrical connection
4Quantity of substance
If the battery pack length in the overall-width direction is increased to accommodate more cells, then the energy capacity increases, but the vehicle space utilization deteriorates
Solution Approach 1:
Instead of using a single large battery pack that would occupy excessive vehicle width, the system segments the total energy capacity into multiple smaller detachable battery packs. These modular packs can be arranged in different configurations (e.g., stacked vertically or arranged in series) to achieve the required energy capacity while optimizing vehicle space utilization and maintaining flexibility in packaging arrangements
Data Source
AI summary
A battery system for an electric vehicle provides an interface connecting a vehicle and a battery to enable quick and easy battery replacement. The battery system for an electric vehicle includes: at least one battery pack detachably mounted to a chassis frame; and a battery connector that is arranged on the battery pack and to which a vehicle connector is connected in a direction of attachment and detachment of the battery pack to and from the chassis frame.