Battery Unit Layout for Lower-Temperature Cooling Gas Supply
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Solution Overview
Problem
Existing battery units for vehicles face reduced cooling performance due to heat generated by control units being transferred to cooling fans, which then supply heated air to battery modules, and the challenge of delivering reliable cooling while minimizing heat transfer to the cooling system.
Innovation Solution
A battery unit design where the junction board is positioned above the cooling device, preventing heat transfer and ensuring a lower-temperature cooling gas is supplied to the battery module, with the cooling device and junction board disposed to minimize heat impact on the cooling system, and an exhaust system to discharge heated air effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the control unit is disposed between the first fan and the second fan in a vertical direction, then the exhaust fans can discharge cooling gas toward the outside, but the heat generated in the control unit is transferred to the cooling fans, causing the cooling gas temperature to rise
Solution Approach 1:
The control unit is extracted from the vertical space between the fans and relocated to the horizontal space adjacent to the battery module. This separation removes the heat source from the cooling gas flow path, preventing heat transfer to the fans and maintaining lower cooling gas temperature while preserving cooling reliability
Solution Approach 2:
The control unit positioning transitions from a vertical arrangement (between fans in the upper-lower direction) to a horizontal arrangement (adjacent to battery module in the left-right direction). This dimensional change repositions the heat source outside the vertical cooling gas flow path, eliminating thermal interference with the fan operation
2Reliability
If the first fan and the second fan are used as intake fans to supply cooling gas more reliably, then the cooling gas can be supplied to the battery module more reliably, but the heat generated by the control unit is delivered to the fans, causing the cooling gas temperature to rise
Solution Approach 1:
The control unit is extracted from the cooling gas flow path and positioned adjacent to the battery module. This ensures that even when fans operate as intake fans, the heat generated by the control unit does not transfer to the cooling gas, maintaining both supply reliability and lower gas temperature
Solution Approach 2:
The battery module serves as an intermediary barrier between the control unit and the cooling gas flow path. By positioning the control unit adjacent to the battery module, the battery module physically separates the heat source from the cooling system, preventing direct heat transfer while allowing the fans to reliably supply cooling gas
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 enhances cooling performance by maintaining a lower temperature of the cooling gas supplied to the battery module, improving overall cooling efficiency and preventing heat transfer to the cooling system, thus allowing efficient operation even under the rear seat of a vehicle.
Implementation Method 1
a cooling device configured to deliver a cooling gas configured to cool the battery module to the battery module
Implementation Method 2
a junction board mounted with a wiring component configured to electrically connect the battery module and an external device and allow a charging power and/or a discharging power of the battery module to flow
Data Source
AI summary
A battery unit includes at least one battery module, a cooling device configured to deliver a cooling gas configured to cool the battery module to the battery module, and a junction board mounted with a wiring component configured to electrically connect the battery module and an external device and allow a charging power and/or a discharging power of the battery module to flow. The junction board is disposed above the cooling device at a position where at least a part of the junction board overlaps the cooling device when viewed from an upper-lower direction.