In the era of electrified mobility, efficient thermal management is critical to ensuring the longevity and performance of electric vehicle (EV) components. Quadrant introduces the next-generation High-Precision Temperature-Controlled Electronic Oil Pump (eOP)—a breakthrough innovation designed to optimize cooling and lubrication for EV motors, controllers, and battery systems. Combining advanced engineering with patented technologies, our eOP series delivers unmatched efficiency, reliability, and cost-effectiveness.

Key Innovations & Technical Advantages
Based on the patented design, our eOP series addresses critical industry challenges with the following innovations:

1. Integrated Thermal Management System
   - Hollow Shaft Cooling Design: Oil flows through the hollow shaft into the stator winding’s high-heat zones, enabling direct cooling of critical components. This dual-path circulation (see Oil Circuit Schematic) reduces operating temperatures by 15–20% compared to traditional pumps.
   - ±0.5°C Precision Oil Temperature Sensor: Ensures real-time monitoring and adaptive control of oil flow and pump speed.

2. Simplified Manufacturing & Enhanced Durability
   - Harness Hub Design: Streamlines winding processes and enables off-line welding, reducing production costs by 30%.
   - Screwless Assembly: Utilizes thermal compression and structural gap fitting instead of screws, improving sealing and resistance to vibration.

3. Optimized Performance
   - High-Efficiency Brushless DC Motor: Achieves up to 92% system efficiency with a lifespan exceeding 15,000 hours.
   - Filtered Inlet & Oil Path: A built-in mesh filter removes impurities, ensuring clean oil circulation.

4. Compact & Lightweight
   - Modular Designs: (e.g., 58mm/75mm motor platforms) support power outputs from 120W to 350W, with weights as low as 550g.

Product Highlights: eOP Series
   Our diverse eOP lineup caters to varied automotive needs:

For full specifications, refer to the attached datasheets.

Why Choose Quadrant’s eOP?
   - Energy Efficiency: Reduces power consumption by up to 25% through resolver-based FOC control and LIN/CAN communication.
   - Robust Design: Operates reliably in extreme temperatures (-40°C to +150°C) and harsh environments.
   - Global Compliance: Meets EMC, NVH, and automotive safety standards.

Case Study: Enhanced Cooling for e-Axle Systems
   A leading EV manufacturer integrated our Kingfisher 300W eOP into its e-Axle system, achieving:
   - 18% improvement in motor cooling efficiency.
   - 12% reduction in energy consumption.
   - Zero downtime due to thermal overload in 12-month field tests.

Conclusion
Quadrant’s High-Precision eOP series redefines thermal management for modern vehicles. With cutting-edge cooling technology, simplified maintenance, and scalable designs, we empower automakers to enhance performance while reducing costs.

Additional Product Information

Application: Kingfisher
The Kingfisher can be mounted on a hybrid transmission, traction motor, or eAxle. It provides pressurized oil circulation for cooling and lubrication of systems such as electric vehicle motors, controllers, and BMS.

Key Features & Technical Data

1. Special Features: Resolver based FOC control, LIN communication, support for speed/volume control, high accuracy oil temperature measurement, bootloader, low speed and high torque.

2. Advantages: Reduced power consumption, excellent system efficiency, small volume and light weight, extended service life due to brushless DC motor.   

Technical Data:

• Flow rate: 26 Lpm Max

• Pressure range: 2 bar

• Working voltage: 9 to 16V

• Displacement: 7.2 cc/rev

• Oil temperature: -40℃ to 150℃

• Ambient temperature: -40℃ to 125℃

Application: KIEP
The KIEP can be mounted on a hybrid transmission, traction motor, or eAxle. It provides pressurized oil circulation for cooling and lubrication of systems such as electric vehicle motors, controllers, and BMS.

Key Features

1. Special Features: Resolver based FOC control, LIN communication, support for speed/volume control, high accuracy oil temperature measurement, bootloader, low speed and high torque.

2. Advantages: Reduced power consumption, excellent system efficiency, small volume and light weight, extended service life due to brushless DC motor.  

Technical Data:

• Flow rate: 26 Lpm Max

• Pressure range: 2 bar

• Working voltage: 9 to 16V

• Displacement: 8.0 cc/rev

• Oil temperature: -40℃ to 150℃

• Ambient temperature: -40℃ to 125℃

Contact Us Today to schedule a demo or request customized solutions!