High Voltage Box to Battery Pack Communication Wire Harness

ModelL: HVBOX-BATTERY-COMM-WIREHARNESS
Part Number: WI-B10105SXSX5134
Rated Voltage: AC 380V / DC 750V
Signal Voltage: DC Low Voltage
Cable Size: 0.5mm² shielded
Length: 1800 mm – 4000 mm (customizable)
Temperature Range: -40°C to +125°C
Compliance: RoHS, ISO/TS 16949, QC/T 29106

YONGRUI ENERGY’s communication wire harness ensures safe and stable signal transmission between the high voltage junction box and the battery pack in electric vehicles.

This wire harness uses flame-retardant materials and automotive-grade connectors. It includes braided and foil shielding to protect signals from electromagnetic interference. The design also resists vibration, high temperature, and harsh operating conditions.

In addition, its compact layout allows easy routing and installation. You can also customize the length and pin configuration to match different EV models.

This solution helps improve the reliability of BMS communication and supports efficient power management in electric vehicles.

Key Benefits

  • Stable Signal Transmission
    Delivers low-noise, accurate signals between HV box and battery pack.

  • EMI Shielding
    Braided and foil shielding reduces signal interference.

  • Temperature Resistant
    Works reliably from -40°C to +125°C.

  • Durable Materials
    Flame-retardant and vibration-resistant, ideal for EV use.

  • Easy to Install
    Compact cable bundling supports flexible routing.

  • Customizable Options
    Length and connector pinouts can be tailored on request.

Technical Parameters

Item Specification
Connector Type 26-pin male & female with protective caps
Pin Count 26 Pins (signal-assigned)
Cable Type Shielded signal cable
Cable Size 0.5mm² × 26 wires
Cable Length Approx. 1980mm
Rated Voltage DC Low Voltage Signal
Shielding Yes (Braided + Foil)
Temperature Range -40°C to +125°C
Outer Protection Corrugated conduit + flame-retardant tape

Applications

  • Communication between high voltage junction box and battery pack

  • Battery Management System (BMS) signal transmission

  • EV powertrain signal communication

  • Electric passenger car and commercial vehicle systems

  • High-voltage interconnection in new energy vehicles (NEVs)

  • Signal feedback wiring for energy control modules

Why choose us?

Two production bases, 12 yearsof production experience

01

Comprehensive R&D, Design, And Manufacturing

A strong R&D team meets diverse industry needs with tailored power cables, wiring harnesses, and charging solutions. Full services from design to mass production ensure high quality.

02

Integrated Production & Precision Management

Full-process production capability from raw materials to finished products. International certifications ensure every production step meets high standards. Smart systems monitor production in real-time, enhancing efficiency and resource optimization.

03

Efficient Supply Chainmanagement & Fast Response

A global sourcing network ensures timely supply of high-quality raw materials. Detailed production planning and scheduling enable quick response and on-time delivery. Optimized inventory management addresses market fluctuations and risks, ensuring supply chain stability and reliability.

Factory strength

Production equipment, production linesand testingequipment

Qualifications & Certifications

Complies with a number of global standards Help products to enter the international market

Frequently Ask Questions

A: Yes, we offer fully customizable services. We will work closely with you to design energy harnesses, connectors, and charging stations that meet your specific requirements and application needs. Our design team ensures that every detail adheres to your technical specifications and functional demands.

A: Absolutely. We provide customized charging stations for both AC and DC applications, with adjustable power ratings and voltage ranges to suit your needs. Whether it’s for residential or commercial use, we can offer a tailored solution for your charging infrastructure.

A: Yes, we support various internationally recognized plug types, including Type 1, Type 2, CCS1, CCS2, and CHAdeMO. We customize our products to ensure compatibility with different plug standards, offering you flexibility in your electric vehicle charging solutions.

A: Our products are designed to endure extreme conditions such as high temperatures, humidity, UV exposure, and chemical corrosion. We ensure that all our energy harnesses and connectors pass rigorous environmental testing, guaranteeing reliable long-term performance even in challenging environments.

A: We collaborate with you from the outset to thoroughly understand your technical requirements. During the design and manufacturing process, we adhere to strict quality management systems such as ISO 9001. We also conduct detailed testing to ensure that the products meet the technical standards and specifications you have set.

A: Yes, we provide samples for you to test and verify the functionality and compatibility of our products. Once you provide feedback on the samples, we can make adjustments to the design as needed to ensure the final product fully meets your expectations.

A: Yes, we offer a wide range of material options, including high-temperature resistant materials, UV-resistant materials, and corrosion-resistant materials. We will select the most suitable materials based on your application’s needs and working environment.

A: Yes, our products are compliant with a variety of international standards such as CE, UL, RoHS, and ISO 9001. We ensure that the products meet the regulations and standards required by different regions and markets.

A: We offer complete charging solutions, including charging stations, EV chargers, cables, and connectors. All components can be customized to your requirements, and we also provide installation and commissioning services to ensure the equipment is up and running smoothly.

A: You can contact our sales team with detailed information about your requirements, and we will provide a customized quote and solution. We will then guide you through the design and production process, maintaining close communication to ensure everything goes smoothly.

Get Started

We aim for open collaboration.

Contact us to get more latest information about our products