Automotive Industry Solutions
SIPU specializes in custom non-standard winding equipment for the automotive industry, covering automotive relay coils, ignition coils, solenoid valve coils, HVAC coils and more. With first-pass yield rates exceeding 99.5%, we offer sample-based and drawing-based custom development, backed by global on-site technical service.
- Information
Introduction
SIPU Mechanical specializes in custom non-standard winding equipment for the automotive industry, covering the full spectrum of automation solutions for relay coils, ignition coils, safety-class solenoid valve coils, and thermal management coils. With precision tension control, flexible machine design, and global after-sales service, we have assisted automotive component suppliers across the globe to realize efficient mass production, securing stable first-pass yield above 99.5%.
Every machine we deliver is custom-engineered based on your coil samples, technical drawings, and process requirements — one-to-one development, built to your exact specifications.
1. Product Range
1.1 Automotive Relay Coil Winding Equipment
Automotive relays are critical components in vehicle electrical control systems, demanding strict precision in coil dimensional accuracy, resistance consistency, and winding density.
Empty bobbin
Finished coil
SIPU Provides:
l High-precision servo-driven winding machines, compatible with wire diameters from 0.02mm to 2.0mm
l Closed-loop tension control system, tension deviation within ±0.02N
l Multi-station automatic loading and unloading for significantly faster cycle times
l Supports both close-wound and loose-wound modes for maximum flexibility
Typical Applications: BCM (Body Control Module), ECU (Engine Control Unit), airbag control, and other relay coils
1.2 Ignition Coil Winding Equipment
Ignition coils directly affect engine ignition efficiency and combustion performance. They operate under long-term conditions of high temperature, high voltage, and high-frequency vibration, demanding the strictest process control.
Ignition coil
Ignition coil
SIPU Provides:
l High-voltage insulated ignition coil winding solutions with multi-layer insulation structure
l High-precision tension control to prevent wire displacement or deformation under high-voltage conditions
l Built-in high-voltage testing interface for on-line electrical performance inspection
l Compatible with all types of high-voltage packages, both cored and coreless ignition coils
Typical Applications: Gasoline engine ignition systems, new energy vehicle high-voltage distribution systems
1.3 Solenoid Valve Coil Winding Equipment
Automotive solenoid valves are widely used in safety-critical applications including transmission (AT/CVT/DCT), braking systems (ABS/ESC), suspension, and power steering. A solenoid valve coil failure can directly endanger vehicle safety.
ABS Coil
ABS Coil
SIPU Provides:
l Precision winding machines specifically designed for safety-class solenoid valves, with tension closed-loop control as standard
l Multi-layer close-winding process ensuring long-term stability under high vibration and high temperature
l Supports full-process automation: pin insertion, taping, and welding — reducing manual intervention
Typical Applications: Transmission solenoid valve coils, ABS solenoid valve coils, braking system valve coils, suspension system control coils
1.4 HVAC & Thermal Management Coil Winding Equipment
Automotive HVAC and thermal management systems are key to cabin comfort and battery thermal management efficiency. The thermal conductivity, consistency, and durability of thermal management coils directly impact overall system performance.
SIPU Provides:
l Large-format coil winding platform, supporting large wire diameters and oversized bobbin specifications
l Precision wire placement control, optimizing coil fill factor and thermal conductivity channels
l Compatible with PTC heater coils, water-heating coils, and other thermal management solutions
l Integrated with automated production lines, enabling seamless connection to final assembly systems
2. Case Studies
Case 1: Full-Automatic Automotive Relay Coil Winding Solution
Traditional semi-automatic winding equipment struggles to meet the mass production and consistency requirements of automotive relay coils. To solve low efficiency and unstable product quality, we customized a multi-station servo winding machine with precise ±0.02N constant tension control.
The equipment supports automatic loading and unloading, integrated winding and testing procedures, and MES data connection. Featuring high compatibility and fast model change, it greatly improves production efficiency and coil consistency to meet standardized automotive component production demands.
Coil winding machine
Automatic coil production line
Case 2: Precision Winding Solution for Automotive Safety Solenoid Coils
Automotive brake and ABS solenoid coils require high precision and full quality traceability to adapt to harsh working conditions of high temperature and strong vibration.
We developed a dedicated automatic winding and post-processing production line with full-process digital tension monitoring and multi-layer dense winding technology. It realizes one-pass completion of winding, soldering, taping and testing, avoiding manual errors. Equipped with complete SPC data recording and remote maintenance functions, the solution ensures stable and traceable winding quality for automotive safety components.
3. Technical Capabilities
Capability | Specification | Application |
| Tension Control Precision | Closed-loop servo tension, deviation within ±0.02N | Ultra-fine to large-diameter coils |
| Wire Diameter Range | 0.02mm — 2.0mm | Sensors, relays, solenoid valve coils |
| Close/Loose Winding Switch | Digital parameter setting, flexible switching | HV ignition coils, EV charging gun coils |
| Full-Process Automation | Winding + pin insertion + taping + welding | High-volume automated production lines |
Production Capacity | product-dependent | High-volume automotive parts production |
4. Global After-Sales Service
SIPU Mechanical understands the automotive industry's strict demands for equipment uptime and service responsiveness. We provide global customers with:
l On-site Installation & Commissioning — Professional engineering team handles installation,debugging and final acceptance at your facility
l Process Parameter Customization — Equipment parameters tailored to your product specifications for optimal performance
l Remote Technical Support — 7×24-hour remote diagnostics for rapid fault resolution
l On-site Operator Training — Equipment operation, maintenance, and basic troubleshooting training
l Spare Parts Supply — Common parts in stock, fastest 48-hour global shipping
5. Summary
Backed by years of non-standard automation customization experience, SIPU Mechanical is deeply rooted in the automotive electronics coil manufacturing sector. We deliver full-process winding automation solutions for automotive relays, ignition coils, safety-class solenoid valves, and thermal management coils — engineered for high precision, high reliability, and full production traceability.
We reject the limitations of off-the-shelf equipment. Every solution we build is custom-engineered to your product process, production volume, and quality standards — flexible, scalable, and built to perform in real automotive production environments worldwide.
6. FAQ
Q1: Can your equipment handle multiple types of automotive coils?
A1: Yes. Our custom non-standard winding machines are compatible with the full range of automotive electronic coils — including relay coils, ignition coils, solenoid valve coils, and HVAC thermal management coils — supporting both close-wound and loose-wound configurations.
Q2: Can equipment be customized for specific product requirements?
A2: Yes. All our equipment is non-standard and custom-built. We typically need coil samples, technical drawings, and process specifications from you. After professional evaluation, we engineer and build the exact winding machine and automation solution to match your requirements.
Q3: What is the typical delivery lead time for custom equipment?
A3: After all technical parameters, drawings, and process specifications are confirmed, standard single-unit custom equipment delivery is 35–60working days. Full automated production line projects will be scheduled according to project scope.
Q4: Do you offer reliable after-sales support for overseas customers?
A4: Yes. We provide one-stop global after-sales support including 7×24-hour remote technical diagnosis, on-site installation and commissioning, parameter optimization, and spare parts express delivery — ensuring maximum equipment uptime and stable production for our customers worldwide.
Q5: Can your equipment integrate with our MES or ERP systems?
A5: Yes. Our custom equipment includes intelligent integration interfaces, configurable to connect with MES, ERP, and other production management systems — enabling real-time production data upload and visualization, fully compatible with smart digital factory requirements.
