Low voltage battery pack power cable harness

With the increasing number of electrical components in cars and the complexity of wiring harnesses, the probability of faults in low-voltage battery pack power cable harnesses has also increased. To solve this problem, automotive wiring harness designers are constantly simplifying wiring harnesses, and many cars have introduced bus data transmission systems.

CAN bus

When a car is driving, there needs to be continuous data exchange between various system control units, which requires a good data transmission method. At present, the CAN bus system is widely used for data transmission between control units, such as engine control units, transmission control units, and cruise control system control units. According to traditional wiring harness design, several signal transmission lines are required for the transmission of signals between two control units, which increases the number of control unit pins and complicates the wiring. The CAN bus is a control unit area network system and belongs to a multi-channel transmission system. Compared with traditional wiring harnesses, the multi-channel transmission system greatly reduces the number of wires and connectors, making the wiring harness layout more simplified.

Vehicles that use the CAN bus, regardless of the amount of information transmitted between each control unit, only need to have two bidirectional data lines connected to two nodes, which are called the CAN bus.

CAN protocol

In order to enable each control unit to recognize the information it needs from the CAN bus and provide information to the CAN bus, each control unit must comply with the same communication protocol, which is the CAN protocol. Under the specifications of the CAN protocol, a large amount of information is transmitted at high speed within the CAN bus of media such as twisted pair cables, coaxial cables, or optical fibers.