Battery Tray Service Disconnection Switch Extraction
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Solution Overview
Problem
Conventional battery systems for electric vehicles have limited accommodating space for high-voltage battery assemblies due to the placement of the service disconnection switch, which also poses a risk during maintenance as it can remain active.
Innovation Solution
A battery accommodating device with a tray, cover, and support system that allows for increased space by positioning the service disconnection switch to be automatically disconnected when the device is removed, ensuring safe maintenance by design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the service disconnection switch is disposed on the side surface of battery system housing or inside the battery system, then the circuit control function is achieved, but the accommodating space for battery assembly is limited
Solution Approach 1:
The service disconnection switch is extracted from the conventional locations (side surface or inside battery system) and repositioned to the battery accommodating device. Specifically, the switch is integrated into the tray structure, allowing it to be disposed on the tray rather than on the housing or inside the battery system, thereby freeing up accommodating space while maintaining circuit control functionality
Solution Approach 2:
The service disconnection switch is relocated from traditional spatial arrangements to a new dimensional configuration within the battery accommodating device. By placing the switch on the tray (which can be accessed from below the vehicle floor), the design utilizes the vertical and lateral space more efficiently, increasing the accommodating volume for battery assemblies
2Ease of operation
If the service disconnection switch remains accessible during maintenance, then operational flexibility is maintained, but high-voltage safety risk increases
Solution Approach 1:
The battery accommodating device is designed to be forcibly removed from the vehicle during maintenance operations. This preliminary action of removal automatically disconnects the service disconnection switch from the vehicle's electrical system, eliminating high-voltage exposure risk before maintenance begins. The switch is positioned such that its disconnection is a prerequisite for safe maintenance access
Solution Approach 2:
The battery accommodating device itself serves as an intermediary mechanism that enforces safety protocols. By designing the device to require complete removal for maintenance, it mediates between operational flexibility and safety, ensuring the switch is disconnected as an intermediate step before technicians can access the battery assembly
Data Source
AI summary
This disclosure provides a battery accommodating device for a vehicle. The battery accommodating device comprises a tray, a cover, a support connecting the tray and the cover, at least one first fastener, and a plug disposed at the lower surface of the tray. The tray has a cavity for accommodating a battery assembly. The cover is disposed above the tray and used for sealing the cavity. The first fastener connects, below the cover, the support to the tray. The plug is configured to be engaged with a base on a vehicle component to connect a circuit of the battery assembly. The present disclosure also provides a battery system and a vehicle comprising a battery accommodating device.