Battery Heat Measurement Fixture With Ribbed Support for Accurate Testing
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Solution Overview
Problem
Conventional heat measurement devices for power storage devices, such as batteries, lack sufficient configurations to maintain precise measurement precision due to potential inclination of the battery cell during conductivity testing.
Innovation Solution
A heat measurement device with a high-heat portion, low-heat portion, temperature sensors, and a cover member that holds the power storage device, featuring ribs to maintain the battery's upright position and reduce thermal insulation, ensuring uniform heat flow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the battery cell is held without sufficient support configuration, then the device structure is simpler, but the measurement precision deteriorates due to battery inclination
Solution Approach 1:
The cover member is segmented into multiple functional zones: a body portion covering the battery side surface, and multiple rib portions protruding from the inner surface. These ribs are positioned at specific locations to contact the battery at multiple points, providing stable support while maintaining measurement precision. The segmentation allows the cover to simultaneously achieve structural support and precise positioning functions.
Solution Approach 2:
The rib portions act as intermediary elements between the cover member and the battery cell. Instead of direct contact between the battery and the cover body, the ribs serve as intermediate contact points that stabilize the battery position without interfering with the thermal measurement process. This intermediary structure prevents battery inclination while minimizing thermal interference.
2Measurement precision
If the cover member contacts the battery side surface extensively, then the battery is well-supported, but thermal interference increases affecting measurement accuracy
Solution Approach 1:
The cover member employs local quality by concentrating contact points at specific rib portions rather than providing extensive surface contact. The ribs are strategically positioned to contact the battery at discrete locations that provide stability without creating significant thermal pathways. This localized contact approach minimizes thermal interference while maintaining adequate support.
Solution Approach 2:
The design extracts the essential support function from extensive surface contact and concentrates it into specific rib portions. By removing the need for broad contact areas, the design eliminates unnecessary thermal conduction paths between the cover member and battery, retaining only the minimal contact required for positional stability.
3Measurement precision
If the battery position is not stabilized, then the device structure is simpler, but heat flow uniformity deteriorates affecting measurement accuracy
Solution Approach 1:
The cover member is segmented into multiple functional zones: a body portion covering the battery side surface, and multiple rib portions protruding from the inner surface. These ribs are positioned at specific locations to contact the battery at multiple points, providing stable support while maintaining measurement precision. The segmentation allows the cover to simultaneously achieve structural support and precise positioning functions.
Solution Approach 2:
The solution addresses the positioning problem by adding structural elements (ribs) in a different dimension - protruding from the inner surface of the cover toward the battery. This dimensional approach allows the ribs to contact the battery side surface and prevent inclination without requiring complex adjustments in the primary measurement dimensions.
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 device ensures precise measurement of heat conductivity by maintaining the battery's upright position and reducing thermal interference, thereby enhancing measurement accuracy.
Implementation Method 1
a rib that protrudes from the inner surface and that is in abutment with the side surface of the power storage device
Implementation Method 2
a first temperature sensor provided on the first end portion in the power storage device; a second temperature sensor provided on the second end portion in the power storage device
Implementation Method 3
a high-heat portion disposed on a first end portion in the power storage device; a low-heat portion disposed on a second end portion in the power storage device
Data Source
AI summary
A heat measurement device includes: a high-heat portion disposed on a first end portion in the power storage device; a low-heat portion disposed on a second end portion in the power storage device; a first temperature sensor disposed on the first end portion in the power storage device; a second temperature sensor disposed on the second end portion in the power storage device; and a cover member that is provided to cover at least a portion of a side surface of the power storage device located between the first end portion and the second end portion and that holds the power storage device. The cover member includes an inner surface facing the side surface of the power storage device, and a rib that protrudes from the inner surface and that is in abutment with the side surface of the power storage device.