Offset Battery Terminal Unit with Shielded Current Sensor
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional battery terminal units with current sensors require large attachment spaces inside vehicle engine rooms due to the linear arrangement of components, leading to increased overhang dimensions and space constraints.
Innovation Solution
A battery terminal unit design featuring a bus bar with an attachment part, an extension part, and a connection part, where the connection part is offset laterally from the extension part, and a magnetic detection element is integrated within a shielded receiving portion, reducing overhang dimensions and eliminating the need for extensive space.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the connection part continues to the extension part in a straight line, then the electrical connection is simple and direct, but the overhang dimension increases and large attachment space is required
Solution Approach 1:
The connection part continues to the extension part through an extending portion that bends laterally, changing the arrangement from a straight line to a three-dimensional configuration. This dimensional change allows the electrical connection to remain direct while reducing the overhang dimension and attachment space requirement
2Measurement precision
If the current sensor is mounted on the side of the harness connected to the battery post, then the current detection is direct, but the touch during attachment may damage the sensor
Solution Approach 1:
A receiving portion is provided on the extension part to receive the board on which the magnetic detection element is mounted. This receiving portion acts as an intermediary structure that positions the sensor away from the attachment area, preventing damage during harness attachment while maintaining direct current detection capability
3Measurement precision
If the magnetic detection element is positioned close to the extension part for direct current detection, then the measurement accuracy is high, but water accumulation may occur and damage the sensor
Solution Approach 1:
The board on which the magnetic detection element is mounted is received within a receiving portion formed on the extension part. This nested structure allows the sensor to be positioned close to the extension part for accurate current detection while being protected from water accumulation that could damage the sensor
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
This design decreases overhang dimensions, simplifies the positioning of the current sensor, reduces the attachment space requirement, and prevents water accumulation, thus enhancing the reliability and efficiency of the current detection system.
Implementation Method 1
a board on which a magnetic detection element is mounted so that the board is opposed to a surface of the extension part
Data Source
AI summary
A battery terminal unit with a current sensor includes a bus bar for a battery terminal and a receiving portion. The bus bar includes an attachment part attached to a battery post, an extension part extended from the attachment part, and a connection part which continues to the extension part and is configured to connect a wire harness. The receiving portion receives a board on which a magnetic detection element is mounted so that the board is opposed to a surface of the extension part. The attachment part, the extension part and the connection part are integrally formed. The connection part continues to the extension part through an extending portion bent from the extension part so as to be positioned laterally to the extension part.