WHAT IS BUSBAR?
Battery is the heart of an Electric Vehicle. However, it is the battery that comprises the most precious technology of an EV.
High-power EV battery is a combination of cells in series or parallel to achieve voltage ratings approaching 400V. The demand of connecting individual cells of about 1.5 to 2.0V requires a material good at both conducting and insulating rather than typically insulated cables.
And that effective material called BUSBAR – an electric conductor and ground plane separated by an insulator.
The conventional cell connections (welded wires, strips, or lugs) are susceptible to failure when the cells even slightly dislocate during operation, for example, due to the vibration of a moving vehicle. That is why new interconnection techniques using different busbar solutions have been introduced to overcome these challenges, especially for cylindrical cells.
BENEFITS OF BUSBAR IN EV BATTERY APPLICATION
We could summarize the main benefits of BUSBAR over traditional insulated cables as follows:
Mechanical Capacity
Electrical Capacity
Thermal Management Capacity
MAIN TYPE OF BUSBAR
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