Floating Terminal Base for Electric Vehicle Power Supply
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Solution Overview
Problem
Conventional electric vehicle battery pack mounting systems face issues with poor electrical connection due to positional discrepancies between terminals, leading to reduced contact quality and shortened terminal lifespan, and hindered mounting operations due to terminal misalignment and corner contact with the battery case.
Innovation Solution
A terminal base with a floating support system for male-side terminals, featuring beveled corners and a horizontal engagement part to ensure proper alignment and contact with female-side terminals, eliminating the need for screws or soldering and preventing terminal displacement, thereby enhancing operability and durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If electrical connection terminals are fixed rigidly on the vehicle side and battery device side, then structural stability is improved, but positional discrepancy between terminals causes poor contact condition and reduced service life
Solution Approach 1:
The patent applies the dynamics principle by making the electrical connection terminal on the vehicle side movable rather than fixed. The terminal is designed to move in the vertical direction within a groove formed in the vehicle body, allowing it to dynamically adjust its position to accommodate discrepancies between the male-side terminal and female-side terminal, thereby maintaining good contact conditions while preserving structural stability.
2Ease of operation
If battery device is mounted from oblique upper direction, then mounting operation is simplified, but corner of male-side terminal contacts edge of opening causing hindered mounting
Solution Approach 1:
The patent applies preliminary anti-action by providing a guide structure that prevents the harmful corner contact before it occurs during mounting. The guide groove in the vehicle body and the corresponding guide structure on the battery device side work together to guide the male-side terminal into proper alignment with the female-side terminal during the oblique mounting operation, preventing the terminal corner from contacting the opening edge.
Solution Approach 2:
The patent uses the guide groove and guide structures as intermediary elements that mediate between the male-side terminal and female-side terminal during mounting. These guide structures facilitate smooth relative movement and proper alignment, enabling the battery device to be mounted from an oblique upper direction without causing terminal corner contact with the opening edge.
3Reliability
If electrical connection terminals are made movable to absorb positional discrepancy, then contact condition is improved, but device complexity increases
Solution Approach 1:
The patent applies local quality by making only the necessary part movable - specifically, the electrical connection terminal on the vehicle side is made movable within the groove, while the rest of the vehicle body structure remains fixed and simple. This localized movability provides the needed flexibility to absorb positional discrepancies without requiring the entire device to become complex.
Solution Approach 2:
The patent changes the positional parameter of the electrical connection terminal by allowing it to move vertically within a groove. This parameter change enables the terminal to adapt to positional discrepancies between connectors, improving contact conditions while maintaining a relatively simple overall structure through the use of a straightforward groove geometry.
Data Source
AI summary
A terminal base of a power supply device for electric vehicle wherein electrical connection terminals on the vehicle body side can be easily connected to electrical connection terminals on the battery pack side. A base is provided with an opening for accepting an insulator board on which male-side terminals are held. The opening is provided with first lower and upper guides and with second lower and upper guides. A first edge of the insulator board is clamped by the first lower and upper guides from the lower and upper sides. A second edge opposed to the first edge of the insulator board is clamped by the second lower and upper guides from the lower and upper sides. In this manner, the insulator board is supported in a floating state. The tip of each of the male-side terminals is beveled for mating with the female-side terminals during connection.