Automotive pre-charge relay

Product Overview

JR20/JR40 Automotive Pre-charge Relay for New Energy Vehicles

① Specially developed pre-charge relay for new energy vehicles.

②Contact form: 1H (single normally open); contact load: 20A/40A, voltage withstand: 450VDC/800VDC.

③ Wide coil voltage range: 6–110VDC, coil power consumption: 3.0W.

④ Compact dimension: 29.2×30×30.1mm, easy for vehicle interior mounting.

It is widely used in vehicle high-voltage pre-charge circuits to realize safe power-on of onboard high-voltage systems.

Product Features

① Designed for EV high-voltage pre-charging circuit control.

② Compact size saves limited installation space inside vehicles.

③ Wide optional coil voltage and stable 3.0W coil power.

④ Strong resistance to vibration and shock to adapt complex vehicle working conditions.

Working Principle

① Adopt electromagnetic drive working principle for circuit switching.

② Energized coil closes contacts; contacts reset automatically after power-off.

③ Realize gradual charging of high-voltage capacitors via pre-charge circuit.

④ Effectively suppress impulse current and protect vehicle high-voltage components.

Materials & Structure

① High-temperature resistant insulating plastic housing for vehicle application.

② Built-in coil, high-current contacts and elastic reset components.

③ Integrated compact structure with 1 normally open contact (1H).

④ Optimized high-voltage insulation design to meet automotive safety requirements.

Application Fields

① New energy passenger vehicles and commercial electric vehicles.

② Energy storage equipment and battery pack high-voltage pre-charge loop.

③ BMS management system, on-board OBC and DC-DC high voltage control.

④ High-voltage circuit protection and slow charging control for electric vehicles.

Industry Solutions

① Standard high-voltage pre-charging solution for electric vehicle platforms.

② Restrict instantaneous surge current to protect high-voltage electrical parts.

③ Miniature structure facilitates layout inside vehicle electrical control box.

④ Wide coil voltage range simplifies development for different vehicle models.

OEM / ODM Capability

① Support customization of coil voltage and terminal structure.

② Custom LOGO printing, product labels and outer packaging available.

③ Optimize insulation and contact structure according to vehicle working conditions.

④ Develop non-standard models to meet supporting demands of automakers.

Customization Process

① Confirm electrical parameters, vehicle operating conditions and certification requirements.

② Professional engineers design targeted technical schemes.

③ Complete sample production and comprehensive reliability testing.

④ Arrange mass production after sample approval with continuous technical support.

Production Capacity

① Equipped with multiple automatic assembly production lines.

② Deploy precision processing equipment and skilled production staff.

③ Standardized production management ensures sufficient daily output.

④ Unified process standards guarantee consistent quality of bulk orders.

Quality Control

① Strict incoming material inspection for all raw components.

② Real-time patrol inspection during all assembly procedures.

③ Electrical performance test and aging simulation test for finished goods.

④ Comprehensive final inspection before packaging and delivery.

Testing Equipment

① High-low temperature chamber for vehicle environmental simulation tests.

② High-voltage comprehensive tester for electrical parameter detection.

③ Hipot tester for insulation and dielectric strength verification.

④ Life tester to verify long-term switching durability.

Certification Qualifications

① Certified with ISO9001:2015 quality management system.

② Able to supply complete official product performance test reports.

③ Provide technical support for customers’ automotive certification application.

④ Meet standard access requirements of new energy vehicle industry.

Production Process

① Precision processing of plastic and metal components.

② Automatic assembly of coils, contacts and housing parts.

③ Semi-finished inspection and finished product aging test.

④ Cleaning, sealing, packaging and warehousing of qualified products.

Packaging & Delivery

① Anti-static packaging prevents electrostatic and collision damage during transit.

② Stable lead time for small orders and mass bulk orders.

③ Multiple logistics transportation modes for flexible selection.

④ Rich export experience to satisfy domestic and overseas delivery demands.

Export Capacity

① Products exported to many countries and regions worldwide.

② Familiar with international trade and customs clearance procedures.

③ Supply complete set of customs declaration documents.

④ Professional team offers long-term technical support and after-sales service.

FAQ

① Q: Do you offer technical support for relay selection?

A: Yes. Kindly advise your system voltage, operating current and installation space, we will recommend the suitable model accordingly.

② Q: What is the MOQ for standard and customized relays?

A: Small orders are acceptable for standard products; OEM MOQ is negotiable.

③ Q: What are the lead times for samples and bulk orders?

A: Samples: 3–7 working days; mass production: 10–20 working days.

④ Q: What is the rated load of the JR20/JR40 relay?

A: 20A/40A at 450VDC/800VDC, designed for EV high-voltage pre-charge circuits.

⑤ Q: Is coil voltage customizable?

A: Coil voltage ranges from 6–110VDC for selection; special specifications are negotiable.

⑥ Q: What certifications can you supply?

A: ISO9001 certification and full product test reports are available.

⑦ Q: What is your product warranty term?

A: 12 months under rated working conditions; damage caused by improper use not covered.

⑧ Q: Can we customize logos and packaging?

A: Yes. OEM service supports customized logos, labels and outer packaging.