Battery Sensor Mounting Structure for Gap-Free Cell Contact
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Solution Overview
Problem
In energy storage apparatuses, the holding member may warp or have tolerances that cause sensors to be spaced apart from the energy storage devices, leading to inaccurate state detection due to the formation of gaps between the sensor detection surface and the energy storage device.
Innovation Solution
The energy storage apparatus includes a sensor with a protruding portion and a holding member with an oppositely facing surface and a fixing portion that penetrates the protruding portion, forming a gap between them, which ensures the sensor's detection surface is securely in contact with the energy storage device, preventing deviation and ensuring stable detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the holding member is used to hold the sensor, then the sensor can be fixed to the energy storage device, but warping or tolerance of the holding member causes the sensor to be spaced apart from the energy storage device, forming a gap
Solution Approach 1:
A protruding portion is added to the sensor as an intermediary element that extends toward the holding member. This protruding portion works in conjunction with the holding member to ensure the sensor maintains stable contact with the energy storage device, compensating for the holding member's warping or tolerance issues.
Solution Approach 2:
The protruding portion is designed to preliminarily extend toward the holding member before final contact is made. This preliminary configuration ensures that when the sensor is installed, the protruding portion is already positioned to make contact with the energy storage device, preventing gap formation due to holding member deformation.
2Ease of manufacture
If the holding member holds the sensor, then the sensor can be fixed in position, but the holding member may obstruct the sensor's contact with the energy storage device
Solution Approach 1:
Instead of having the holding member directly press the sensor against the energy storage device, the design inverts the contact path: the sensor's protruding portion makes contact with the energy storage device, while the holding member's fixing portion only secures the protruding portion without interfering with the detection contact.
Solution Approach 2:
The sensor structure is segmented into a main body and a protruding portion. The protruding portion is specifically designed for contact with the energy storage device, while the main body is held by the holding member. This segmentation allows the detection function and fixation function to be separated, preventing mutual interference.
3Ease of manufacture
If the sensor is pressed against the energy storage device by the holding member, then the sensor can be fixed, but the sensor may deviate from the correct position
Solution Approach 1:
The protruding portion is designed to self-align with the energy storage device surface. When the sensor is installed, the protruding portion naturally makes contact with the energy storage device, and the fixing portion of the holding member secures this position without requiring additional alignment operations, preventing sensor deviation.
Data Source
AI summary
An energy storage apparatus includes an energy storage device, a sensor, and a holding member that holds the sensor. The sensor includes a protruding portion protruding laterally. The holding member includes an oppositely facing surface oppositely facing the protruding portion, and a fixing portion provided on the oppositely facing surface and fixing the protruding portion in a state of penetrating the protruding portion. A gap is provided between the protruding portion and the oppositely facing surface.