SUR - RON Power System

The Power Department of ChongQing Quilong Technology Co., Ltd is committed to the research and development as well as manufacturing of the core technologies of electric motorcycle power systems and provide technology services for power systems and solutions to the integrated motorcycle power systems, whose products include motors, reducers, and motor controllers and so on.
The company mainly focuses on the development and manufacturing of medium and large power permanent magnet synchronous motor (PMSM) systems. Based on large-power density permanent magnet synchronous motors, the company adopts advanced vector control technology (FOC), with an integration of the driving logic and control algorithms from driving experience of professional drivers and ultimately develops a power system with excellent driving experience, with core technologies and intellectual property.

It is a power system with continuous output power of 5kW, including 5kW PMSM motor and 5kW FOC motor controller. The product can provide two rated voltage operating modes, 48V and 60V(Rated voltage expansion :48V/60V/72V/84V) which can be automatically adjusted according to the battery system. Due to the excellent heat dissipation structure design and multi-level temperature control strategy, the power system is able to make continuous stable large-scale power output under natural air cooling conditions, which has been applied to the SUR-RON light bee model with mass production.

This power system include two configurations: rated 60V low-voltage with 8kW air-cooling system or with a 10kW water-cooling system. The peak output power can reach maximum 18kW, peak torque can reach 66 N.m. The system include a PMSM motor( SMP180-08 series), a gearbox(optional) and a FOC controller( SD08 series). By matching with high-speed motor with gearbox, this power system can achieved both high power density and high torque output, the mechanical characteristic curve of the power system is further optimized. The system shows high torque at low speed and full power at high speed. With CAN communication function, the vehicle can be fully intelligent.

The product adopts advanced vector control algorithm (FOC), excellent heat dissipation structure design and EMC circuit design, enabling it to own high reliability and environmental friendliness while achieving high performance. In the meantime, the product enjoys quick dynamic response, large low-frequency torque and an intelligent control system with the ability to better understand users' operation purposes. The products have various functions such as energy recovery, high-speed field weakening and traction control.

The vector controller with rated 8kW, and it adopt 485/CAN communication mode (according to user selection, CAN communication protocol is recommended.). It has many high performance functions such as electric energy recovery, high speed and weak magnetism and traction control, and it has abundant electrical interfaces. The core devices of it adopt the automobile-grade kernel chip, based on the high protection standard of IP67 and the full potting sealing structure, to ensure the high reliability of the product.

The 5kW rated sinewave controller, adopts 485/CAN communication protocol, has multiple safety& security protection setting and various functional port, and its written in a control system based on the professional riding strategy, this unique feature is only for high-performance electric motorcycle. Full potting structure, maximum IP67 protection level, and long-term reliability testing ensure the high-quality of the product.

Permanent magnet synchronous motor based on natural air cooling, has mature radial magnetic field design, and motor power density is higher. The permanent magnet material of high performance grade and standard guarantee working reliably in a higher temperature environment. The high quality of material, and the higher coil space factor make the motor output more torque. The unitary modular position sensor can make the motor more anti-interference and more accurate and reliable control. With the series design of 8kw motor, it makes the production process and supply match more consistent, and the system quality guarantee is more reliable.

SUR-RON Power Spare Parts Selection

SUR-RON Power system application services

For power system products, SURRON provides technical support for customers to achieve the best performance of power system. Technical support includes the matching of power system according to different models, improvement of driving experience and adjustment of control strategy. Additional services also include: on the basis of the standard power system, increase or improve related functions, such as field weakening control, kinetic energy recovery, traction control and so on, according to customer requirements.

Qiulong can provide the technical support of power battery for customers based on the customer's application needs of power system, so as to help customers realize the optimal power and safety of power system. Technical support includes the performance parameters matching and control logic matching of the power battery and the controller, and can also, provide technical solution proposal of the power battery and subsequent matching test and other additional services according to customer needs.

Based on the demand of the customer, SURRON can provide technical support and solution for entire bike electrical system matching and integration, which can massively improve the safety and reliability of the bike electrical system. Technical support includes the bulid the entire bike electrical system structure, bike electrical system circuit design and upgrade, system matching and integration verification of power system and other electrical components of the bike.

For the problems in vehicle design (or original model transformation) based on the application of our company's power system, Qiulong can provide a complete set of structural design scheme and technical evaluation service, including the vehicle driving system design, power system structure layout, complete vehicle structural design and so on.