Battery Busbar Temperature Sensor Placement
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Solution Overview
Problem
Existing battery apparatus designs occupy excessive space in busbars with temperature acquisition units, impacting current flow and accuracy due to their placement between busbars and flexible circuit boards.
Innovation Solution
Arranging the temperature acquisition unit between adjacent busbars in a battery stack, utilizing the gap between them to minimize space occupancy and current density impact, with a shorter temperature transmission path to the sensor for improved accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the temperature acquisition unit is arranged at the connection region between the busbar and the flexible circuit board, then the temperature can be acquired, but a larger space of the busbar is occupied and a greater impact is caused on the flow area of the busbar
Solution Approach 1:
The temperature acquisition unit is moved from the horizontal plane (connection region between busbar and flexible circuit board) to the vertical dimension (stacking direction between adjacent busbars). This spatial reconfiguration allows the temperature sensor to be positioned in the gap between busbars without occupying valuable horizontal flow area, thus resolving the contradiction between measurement capability and space occupation.
2Measurement precision
If the temperature acquisition unit is arranged at the connection region between the busbar and the flexible circuit board, then the temperature can be acquired, but a greater impact is caused on the current flow of the busbar
Solution Approach 1:
By relocating the temperature acquisition unit to the stacking direction between adjacent busbars, the unit no longer interferes with the current flow path in the horizontal plane. This dimensional shift separates the temperature sensing function from the current conduction function, allowing both to operate independently without mutual interference.
3Area of stationary object
If the temperature acquisition unit is arranged between adjacent busbars in the stacking direction, then space occupancy in busbars is reduced and current flow interference is minimized, but the temperature transmission path needs to be optimized for accuracy
Solution Approach 1:
The patent introduces a holder as an intermediary component that positions the temperature acquisition unit between adjacent busbars. The holder includes a temperature transmission path that directly connects the temperature sensor to the busbar, ensuring accurate temperature measurement while maintaining the spatial separation benefits. This intermediary structure resolves the contradiction by providing both spatial efficiency and measurement accuracy.
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 configuration reduces space occupancy in busbars, minimizes current flow interference, and enhances temperature measurement accuracy by shortening the temperature acquisition path.
Implementation Method 1
the temperature of a battery is acquired through a temperature acquisition unit
Data Source
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AI summary
A battery apparatus includes a plurality of batteries (1) arranged in parallel, at least two busbars (2) and at least one temperature acquisition unit (3). In a stacking direction of the plurality of batteries (1), the temperature acquisition unit (3) is arranged between adjacent two of the busbars (2).