Integrated Bus Bar Module for Battery Voltage Detection

The patent combines the connection terminal function and voltage detection function into a single integrated bus bar structure. The bus bar serves dual purposes: electrically connecting adjacent unit batteries in series while simultaneously providing voltage detection capability through integrated detection circuits. This eliminates the need for separate resin boards and relay boards, reducing component count and assembly complexity while maintaining reliable voltage detection functionality.

By integrating the voltage detection circuit directly into the bus bar structure, the patent eliminates multiple assembly steps required for installing separate resin boards and relay boards. The integrated design allows the bus bar to be installed as a single component that simultaneously provides both electrical connection and voltage detection, significantly reducing assembly time and improving manufacturing efficiency.

The patent divides the detection circuits into distributed locations along the bus bar, with each detection circuit positioned near its corresponding unit battery. This segmentation approach allows each detection circuit to operate at lower voltage levels locally, reducing the voltage withstanding requirements for individual circuits. While this increases wiring distribution, it significantly reduces component cost and improves system reliability by isolating voltage stress to specific locations.

The patent positions each detection circuit locally near its corresponding unit battery on the bus bar, creating localized detection zones. This local quality approach ensures that each detection circuit is close enough to accurately measure its specific unit battery voltage while minimizing exposure to noise from other circuits. The distributed layout provides sufficient flexibility for manufacturing and assembly while maintaining high detection accuracy for each individual cell.