High-Voltage Battery Safety Plug Slide Mechanism
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Solution Overview
Problem
Existing safety plug devices for high-voltage batteries in electric and hybrid vehicles have complex structures and many components, increasing manufacturing costs and reducing workability due to the need for pivoting mechanisms, making them difficult to manipulate and use during maintenance.
Innovation Solution
A safety plug device with a slide-type grip housing and pivot-type grip lever that allows for easy removal of the interlock function by sliding and pulling the grip part, reducing the number of components and simplifying the structure to improve workability and safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a typical safety plug device uses a pivoting mechanism with multiple components including spring and locking parts, then the interlock function can be reliably turned off, but the device complexity increases and manufacturing cost increases
Solution Approach 1:
The patent extracts and removes unnecessary components from the traditional safety plug device. Specifically, it eliminates the spring, locking part, and complex pivoting mechanism, retaining only the essential grip lever and grip housing structures. This simplification maintains the core interlock function while significantly reducing device complexity and manufacturing cost.
Solution Approach 2:
Instead of using a complex pivoting mechanism where the grip lever rotates to disengage locking parts, the patent inverts the approach by using a simple linear sliding motion. The grip lever slides forward within the grip housing to directly release the interlock pin, reversing the traditional mechanical approach from rotational to translational movement.
2Reliability
If a typical safety plug device uses a pivoting mechanism with locking parts, then the interlock can be securely released, but the ease of operation decreases due to difficult manipulation
Solution Approach 1:
The patent replaces the complex mechanical pivoting and locking system with a simpler mechanical sliding system. The grip lever's linear forward motion directly drives the release of the interlock pin through a guide groove mechanism, eliminating the need for rotational movement and multiple locking engagements, thereby improving ease of operation.
3Reliability
If a typical safety plug device uses many components such as spring and locking part, then the interlock function can be reliably controlled, but the manufacturing cost increases
Solution Approach 1:
The patent extracts and eliminates cost-intensive components such as the spring and locking part from the traditional safety plug device. By retaining only the essential grip lever and grip housing with integrated guide grooves, the design maintains interlock control reliability while significantly reducing part count and manufacturing cost.
Data Source
AI summary
A safety plug device that is disposed in a high-voltage battery to interrupt power supply. The device includes a female housing, a male housing, and a grip part. The female housing includes a terminal part and the male housing is equipped with a fuse and is removably coupled to the female housing. The grip part is slidable on the male housing in forward and backward directions, is simultaneously coupled to the male housing in a vertical direction, and is equipped with an interlock pin connected to an interlock connector at a rear end thereof. In particular, the grip part slides forward to release the interlock pin and to be coupled to the male housing, to allow the grip part and the male housing to be removed in an upward direction to interrupt the power supply.