Different vehicle body sizes, battery pack installation positions and motor layout schemes demand differentiated high voltage harness total length and wiring bending path. Standard fixed length harness cannot adapt to compact passenger cars, large SUVs and commercial light trucks simultaneously, leading to overlong redundant wiring or insufficient wire length during assembly. Customized harness production adjusts wire length and reserved bending radian according to client vehicle three dimensional layout drawings, eliminating redundant wiring space occupation and tension damage risk during vehicle vibration.
JONHON operates nine flexible production lines exclusively for high voltage harness manufacturing, covering AC DC charging inlet harness, PTC air conditioning harness, PDU motor harness, battery pack OBC harness and twenty four volt battery harness. Engineering teams coordinate with client R&D departments to optimize wiring paths, avoid sharp metal edges that scratch wire outer insulation, and reserve reasonable fixing buckle positions along the harness route. Custom length design simplifies vehicle assembly workflow and reduces on site modification labor on production lines.
High voltage harness connects multiple core EV components, so matching high voltage connector and electric vehicle charging plug according to client component selection is a core customization item. Different brands select different rated current connectors and charging inlet plugs based on vehicle power platform voltage, requiring harness terminals to carry out targeted crimping and matching. Rigid production lines only support fixed connector specifications and cannot switch matched terminals rapidly for different client projects.
Flexible harness production lines support collocation of 16A to 350A full range high voltage connector and global standard charging plugs on one assembly line. JONHON integrates self produced connectors and charging plugs into customized harness solutions, realizing one stop supply of harness and matched connection components. The integrated matching scheme eliminates compatibility faults caused by third party connector assembly mismatching and shortens client component procurement management links.
Vehicle engine compartments generate strong electromagnetic interference that disturbs vehicle control signal transmission, so customized shielding layers and outer protective materials become essential for high voltage harness. High performance eight hundred volt high voltage platforms require double layer metal shielding harness to reduce electromagnetic radiation, while low voltage auxiliary circuits only need single layer shielding design. Operating environments near engine heat sources need high temperature resistant flame retardant outer sleeves, and chassis bottom wiring requires wear resistant anti collision protective tubes.
All shielding and protective material options can be freely combined during JONHON high voltage harness customization, with raw material samples provided to clients for performance verification before mass production. The customized protective structure improves harness service life under complex vehicle operating environments and avoids insulation aging breakdown caused by high temperature, friction or electromagnetic interference.
Special vehicle models such as commercial delivery vans, electric construction machinery and charging integrated vehicles put forward special functional demands for high voltage harness, including built in temperature sensing wires, quick disassembly locking structures and waterproof integrated terminal modules. Standard harness lacks these additional functional structures and cannot meet special vehicle safety monitoring and rapid maintenance requirements. Flexible production lines support adding auxiliary functional wires and special structural components according to client technical specifications without changing main production equipment.
Custom high voltage harness with built in temperature sensing lines cooperate with vehicle battery management systems to monitor real time harness temperature and trigger power limit protection when overheating occurs. JONHON’s flexible production lines support small batch special function harness prototype development for new model pre testing, accelerating new vehicle platform verification progress for EV brands.