Battery Swap Positioning Pin Buffer for Hole Spacing Deviation
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Solution Overview
Problem
The existing location structure in battery swap systems for heavy-duty trucks experiences precision loss due to machining errors, causing the location hinge pin to collide with the inner wall of the location through hole, leading to inaccurate plug insertion and reduced system reliability.
Innovation Solution
A positioning device with a buffer assembly is introduced, which includes a location pin and a location hole, with the buffer assembly positioned between the location pin mounting base and the location hole mounting base, or on the location pin, to absorb spacing deviations and provide shock absorption, ensuring a flexible fit and preventing collision.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a location hinge pin and location through hole structure is used for mechanical cooperation, then the battery swap frame and vehicle-mounted battery swap base can be located relatively, but the location hinge pin collides with the inner wall of the location through hole due to machining errors, causing the location through hole to change in size and decrease in precision after use over time
Solution Approach 1:
A buffer assembly is introduced as an intermediary component between the location pin and location hole. The buffer assembly includes a buffer member that can deform elastically to absorb collision forces, preventing direct contact between the location pin and the inner wall of the location hole, thereby maintaining location precision and preventing wear.
Solution Approach 2:
The buffer assembly is pre-installed in the location hole before the location pin is inserted. The buffer member is positioned to protrude into the location hole, providing advance cushioning protection against potential collisions caused by machining errors or relative movements, preventing the location pin from directly impacting the hole wall.
2Ease of operation
If the location hinge pin is inserted into the location through hole, then relative location is achieved, but the location pin moves radially and collides with the inner wall, affecting use of the entire system
Solution Approach 1:
The buffer assembly serves as a mediator between the location pin and location hole structure. It absorbs radial movements and collision forces, allowing the location pin to be inserted easily while preventing damage to the location hole, thus maintaining both ease of operation and manufacturing precision.
Solution Approach 2:
The buffer member changes its physical state from a rigid structure to a deformable elastic structure. This parameter change allows it to absorb radial movements and collision forces dynamically, maintaining the precision of the location hole while facilitating easy insertion of the location pin.
3Measurement precision
If a rigid location structure is used, then precise initial location is achieved, but the location precision decreases after use due to collision and impact
Solution Approach 1:
The buffer assembly is pre-installed to provide cushioning protection before any collision occurs. This beforehand cushioning prevents the location pin from directly impacting the location hole wall during operation, maintaining initial location precision throughout the service life of the system.
Solution Approach 2:
The buffer assembly combines different material properties - the buffer member is made of elastic material that can deform and absorb energy, while the location pin and hole are made of rigid materials for precise location. This composite approach maintains initial precision while extending service life through shock absorption.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The buffer assembly maintains the size and precision of the location hole, improving the reliability and longevity of the battery swap system by preventing the location pin from moving radially and colliding with the hole wall, thus ensuring precise alignment and extended service life.
Implementation Method 1
a buffer assembly, where the buffer assembly is disposed at least in one of the following positions: between the location pin mounting base and the location pin, between the location pin and the location hole mounting base, and on the location pin; such that in a case that a relative movement exists between the battery frame and the battery swap base, the buffer assembly provides a buffer for shock absorption in a radial direction of the location pin
Data Source
AI summary
The present disclosure provides a positioning device and a truck. The positioning device includes: a location pin disposed on a location pin mounting base of a battery swap base, a location hole disposed on a location hole mounting base of a battery frame, and a buffer assembly. The location pin is inserted into the location hole. The buffer assembly is disposed at least in one of the following positions: between the location pin mounting base and the location pin, between the location pin and the location hole mounting base, and on the location pin; such that in a case that a hole spacing deviation exists between the battery frame and the battery swap base, the buffer assembly offsets the hole spacing deviation, and in a case that a relative movement exists between the battery frame and the battery swap base, the buffer assembly provides a buffer for shock absorption.