What is a battery Wiring module?

This wiring module is a wiring component used to electrically connect the cell electrodes of the high-voltage battery in series or in parallel. Each wiring module consists of bus bars and wiring harnesses with terminals, both of which are encased in a plastic molding.

Why do EVs need battery wiring modules?

The number of battery cells used in an EV battery pack increases to extend the mileage, which in turn requires a reduction in the volume of battery wiring parts. For the widespread use of EVs, the safety of battery packs is another important factor. This report introduces our development on battery wiring modules for EVs. 1. Introduction

How does a battery cell Wiring module work?

Each wiring module consists of bus bars and wiring harnesses with terminals, both of which are encased in a plastic molding. To electrically connect each electrode to a bus bar, the bolt protruding from the battery cell is passed through an opening in the bus bar and then Photo 1.

Why do EV batteries need a battery pack?

EV battery packs are also required to ensure a high level of safety as their capacity increases. A battery pack is equipped with voltage detection wires to transmit the cell voltages to the monitoring unit.

How do you connect a FPC to a battery pack?

Depending on the specifications of the battery pack, various methods can be used to connect the FPC to the bus bar that electrically connects the cell electrodes. A solder connection, which is an example of the bus bar/FPC connection method, is shown in Photo 5. Photo 5. Solder connection between bus bar and FPC