Battery Post Terminal Structure for Durable State Detection Mounting
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Solution Overview
Problem
Conventional battery state detection devices face durability issues due to loads applied during battery post terminal detachment, which can cause damage to the case.
Innovation Solution
A battery state detection device design featuring a battery post terminal with a holding part and an insert part that contacts the case via multiple faces, incorporating a fitting part to securely accommodate the insert part, distributing loads to improve case durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the battery state detection device is fixed to the battery post terminal with a simple case structure, then the device complexity is reduced and ease of manufacture is improved, but the case durability deteriorates due to concentrated loads during detachment
Solution Approach 1:
The battery post terminal is segmented into distinct functional parts: a holding part that contacts the case at multiple locations and an insert part that fits into the case. This segmentation allows the load to be distributed across multiple contact points rather than concentrated at a single point, improving case durability while maintaining manufacturing simplicity
Solution Approach 2:
The contact interface between the battery post terminal and case is extended from a single-point contact to multi-face contact. The holding part contacts the case at multiple faces (front face, rear face, and side faces), transforming the contact geometry from zero-dimensional (point) to two-dimensional (surface), thereby distributing the mechanical load and preventing case damage
2Reliability
If the battery post terminal contacts the case at multiple faces, then the load distribution is improved and case durability is enhanced, but the device complexity increases due to the holding part and insert part structure
Solution Approach 1:
The holding part and insert part are merged into a single integrated battery post terminal component rather than separate parts. This merging reduces assembly steps and fastener requirements while achieving the desired multi-face contact geometry for load distribution, thus improving case durability without proportionally increasing device complexity
Solution Approach 2:
The battery post terminal structure itself serves the dual function of electrical connection and mechanical load distribution. The holding part and insert part are designed to automatically provide multi-face contact and load distribution when the device is mounted, eliminating the need for additional reinforcing structures or complex mounting mechanisms
Data Source
AI summary
A battery state detection device including a battery post terminal, a case accommodating a circuit board including a current sensing circuit that senses a current by being electrically connected to the battery post terminal, and a harness connection part provided on the case, the harness connection part being capable of having a harness connected thereto, in which the battery post terminal includes a holding part held on one of faces of the case, and an insert part provided in a region from the holding part along a face adjacent to the one of the faces of the case, the battery post terminal contacts the case via at least two faces, the two faces including the one of the faces and the face adjacent to the one of the faces, and the case includes a fitting part, the fitting part being adapted to fit around the insert part by accommodating the insert part.