Control Module Bus Bar Notches for Battery Cooling Airflow
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Solution Overview
Problem
In the development of high-output battery modules for hybrid and electric vehicles, the increasing size of battery modules poses challenges in efficiently cooling the components without interfering with the charge/discharge circuit, which can obstruct airflow and hinder performance.
Innovation Solution
A control module configuration where the battery stacks are arranged orthogonally with terminals connected in series, featuring positive and negative electrode bus bars, ventilation holes, and notches to prevent interference with airflow, ensuring smooth cooling air flow and minimizing size increments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If the battery module size is increased to achieve high output performance, then the power and capacity are improved, but the device size increases and cooling efficiency deteriorates
Solution Approach 1:
The control module is positioned in the height direction (vertical dimension) above the battery module, while ventilation holes are provided in the lateral direction. This multi-dimensional spatial arrangement allows the control module to be integrated without interfering with the lateral airflow path, enabling compact vertical stacking while maintaining horizontal cooling efficiency.
Solution Approach 2:
The control module housing is divided into distinct functional regions: a control element housing area and a ventilation hole area. This segmentation allows independent optimization of each region - the control elements can be densely packed vertically while the ventilation holes maintain clear lateral airflow paths for effective cooling.
2Volume of stationary object
If the control module and battery module are integrated closely to reduce device size, then the compactness is improved, but the cooling air flow is interfered with by circuit components
Solution Approach 1:
The control module is positioned in the height direction (vertical dimension) above the battery module, while ventilation holes are provided in the lateral direction. This multi-dimensional spatial arrangement allows the control module to be integrated without interfering with the lateral airflow path, enabling compact vertical stacking while maintaining horizontal cooling efficiency.
Solution Approach 2:
The control module housing is divided into distinct functional regions: a control element housing area and a ventilation hole area. This segmentation allows independent optimization of each region - the control elements can be densely packed vertically while the ventilation holes maintain clear lateral airflow paths for effective cooling.
3Volume of stationary object
If the fan and charge/discharge circuit unit are located closer to reduce size, then the device compactness is improved, but the air flow is interfered with by the circuit unit
Solution Approach 1:
The control module is positioned in the height direction (vertical dimension) above the battery module, while ventilation holes are provided in the lateral direction. This multi-dimensional spatial arrangement allows the control module to be integrated without interfering with the lateral airflow path, enabling compact vertical stacking while maintaining horizontal cooling efficiency.
Solution Approach 2:
The control module housing is divided into distinct functional regions: a control element housing area and a ventilation hole area. This segmentation allows independent optimization of each region - the control elements can be densely packed vertically while the ventilation holes maintain clear lateral airflow paths for effective cooling.
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 effectively suppresses interference with cooling air, enhances airflow, and allows for a more compact design of the battery power source device, maintaining performance while reducing size increments.
Implementation Method 1
a first control-side ventilation hole through which air is made to flow onto the first battery stack; a second control-side ventilation hole through which air is made to flow onto the second battery stack
Data Source
AI summary
A control module is arranged side by side with a battery module. The control module includes positive and negative electrode bus bars which are electrically connected to positive and negative electrode input/output terminals of the battery module, respectively. The bus bars are mounted in a mounting part. The mounting part has first and second control-side ventilation holes through which air flows onto first and second battery stacks, respectively, in the battery module. The mounting part has notches in which at least one of the positive electrode bus bar and the positive input/output terminals and at lease one of the negative electrode bus bar and the negative input/output terminals are formed. The first and second control-side ventilation holes are arranged side by side in the lateral direction. The notches, the positive electrode bus bar, and the negative electrode bus bar are located between the first and second control-side ventilation holes.