「Qingpan」intelligent chassis
We are committed to developing relevant products with "safety, reliability, robust software algorithms, and strong cost competitiveness," such as automobile chassis braking, steering, suspension, chassis domain controller, etc., and fostering an independent and controllable domestic industry chain and excellent product competitiveness.
Intelligent braking system

In 2021, the product was designated as an "Advanced Technical Product in the Key Fields of Jiangsu's Automobile Industry" and was included in the Catalogue of Major Innovative Technologies and Products of Key New Energy Vehicle (NEV) Enterprises in Jiangsu Province (2021)

The project was included in the 2021 Nanjing "Zijin Zhidian" Industry Chain Technology Tackling Projects

Redundant safety system
Three-level redundant architecture design (IBC main module + RBU redundant module + distributive EPB); functional safety could reach ASIL Level D to meet the requirements of high-level automatic driving; switching speed of master/redundant system ≤100ms
Efficient lightweight assembly
The mechanical transmission efficiency of a coaxial brushless motor direct drive transmission mechanism could attain ≥86%; design of integrated lightweight electromechanical and hydraulic coupling mechanism; high-precision linear solenoid valve
Agile and reliable electric control
Low power consumption: The system’s current under the sleep node is less than 200μA, allowing for ultra-long vehicle standby time; minimal latency: High-speed sensor signal processing, with a CPU frequency of 300M, contributes to faster signal transmission and data processing; high reliability: The system power-off protection circuit, segmented big capacitor pre-charging, and three-rail redundant power supply system are the best ways to ensure safety
Mainstream robust algorithm
Meet the requirements of the Autosar architecture, ASPICE specification, and functional safety development process; strategy for multi-core heterogeneous lockstep software tasks; motor processing technique with three-loop coordinated control and noise reduction; Solenoid valve flow matching and linear control technology

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Technical Parameters of Product

Main parameters
Technical indexes Indexes
Weight (kg) <5.8
Dynamic build-up time (ms) ≤140
Fluid replacement performance (ms) ≤200
Max. pressure build-up capacity (bar) ≥200
Quick release time (s) ≤0.3
Steady-state regulation accuracy (bar) <1
Noise NVH (dB) ≤68dB@ABS、≤50dB@ACC
Life (10,000 times) ≥220
Interface specification
Interface name Specification
Brake pedal ratio ≥3.3
Waterproof and dustproof Meet IP6K9K
Hydraulic circuit type Type "X" or "H" (optional)
Pedal connector Pusher fork or pusher ball (optional)
Overall dimensions of IBC assembly 176.5*188*161.5mm (excluding oil pot)
Firewall interface size Threaded link 72*72mm or 80*60mm (adjustment based on model supported)
Brake pipe Comply with ISO4038, M10*1.0, and M12*1.0 (adjustment based on model supported)
ECU connector Comply with standard JA3724-HL-1 (adjustment based on model supported)
Redundant intelligent steering
Mechatronics integration system design
Electric drive integration technology, high torque and power output, and system architectural redundancy design
Algorithms for complete kernel and advanced function control
Intelligent driving functions such as automatic parking/lane change assist/lane maintaining, and advanced functions such as off-tracking compensation/vibration suppression/friction compensation, etc.
Motor compensation algorithm for basic control such as assist control/yaw damping/active return, and torque fluctuation suppression Redundant permanent magnet synchronous motor drive and control and diagnosis, complex motor 6-phase current reconstruction technology, etc.
Intelligent networking support design
Comply with information security needs, and support OTA upgrade technology and cloud deployment monitoring
Comply with function safety design
When assistance (sLOA) is unexpectedly lost, the electronic control system can fulfill ASIL D functional safety level
  • Double-pinion redundant intelligent steering system RISS-dp
  • Electric drive unit RPK-dp of pinion redundant intelligent steering system
  • Rack-type redundant intelligent steering system RISS-r
  • Electric drive unit RPK-r of the rack-type redundant intelligent steering system

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Technical Parameters of Product

Content of technical characteristics RISS-r RISS-dp
Motor type 6-phase permanent magnet synchronous motor 6-phase permanent magnet synchronous motor
Phase current peak of electric control system (A) 200 160
Max. rack force (kN) 16.5 12.5
Sensor Type TAS 4+2 TAS 4+2
RPK dustproof and waterproof IP6K9K IP6K9K
sLOA failure rate < FIT10
Fault tolerance time(ms) <25 <25
Active alignment residual angle (°) <1.5 <1.5
Torque fluctuation(Nm) <0.2 <0.2
Single-point time-dependent diagnostic coverage >99 >99
Execution angle error(°) Min(5%*Angle req,1.5) Min(5%*Angle req,1.5)
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