Nexisense ZI100 Negative Ion Generator: Reliable Negative Ion Generation Solution for Vehicle Environments

In the context of the rapid growth of intelligent cockpit and healthy travel demands, in-vehicle air quality has become a core indicator affecting user experience and regulatory compliance. The Nexisense ZI100 negative ion generator module is based on high-voltage corona discharge principle and adopts bipolar ion generation technology, capable of stably producing high-concentration negative ions (typical >8×10⁶ ions/cm³) in extreme vehicle environments, effectively neutralizing PM2.5, VOC, odor molecules, and partially reducing the surface charge of bacteria, achieving passive air purification and active oxygen suppression.

The module design fully considers automotive electronics environment requirements: wide voltage input (DC 9–16 V, typical 12 V/24 V compatible), reverse polarity protection, transient suppression, and EMC compliance with CISPR 25 Class 3 standard. Power consumption is controlled at<1.2 W (steady operation), supporting long-term always-on standby. The output terminal adopts waterproof aviation plug, facilitating integration with HVAC domain controller or independent air management ECU.

Core Technical Parameters and Performance Indicators

The ZI100 employs a ceramic discharge body + precision high-voltage transformer architecture, maintaining stable negative ion concentrations at 6–10 million/cm³ at 30 cm from the outlet. The module incorporates built-in temperature compensation circuitry and overcurrent protection, ensuring performance drift <8% across storage temperatures of -40°C to 85°C and operating temperatures of -20°C to 70°C. It is designed for a lifespan >30,000 hours (continuous operation) with MTBF >100,000 hours, meeting automotive-grade long-term reliability requirements.

Compared with traditional carbon brush type or unipolar generators, ZI100 bipolar design significantly reduces ozone by-product generation (typical<0.02 ppm, far below GB/T 18801-2022 limit), while improving sedimentation efficiency for fine particulate matter and odor molecules.

Typical Vehicle Application Scenarios and System Integration Value

1. Front-mounted HVAC System Integration

ZI100 can be directly embedded in the return air section or outlet duct of the automotive air conditioning box, linked with the air conditioning domain controller via LIN or PWM signal. When the in-vehicle air quality sensor (AQS) or CO₂ sensor detects an increase in pollutant concentration, the controller automatically increases the negative ion output level to achieve demand-responsive purification. In multiple new energy passenger vehicle projects, this solution has helped reduce average in-vehicle PM2.5 concentration by more than 45%, while reducing fresh air energy consumption by approximately 25%, meeting healthy cockpit certification requirements.

2. Rear-mounted and Aftermarket Solutions

For aftermarket purifiers, roof air conditioners, or independent air management equipment, ZI100 provides standard interface version (DC 12 V + signal control line), supporting docking with third-party domain controllers or intelligent gateways. Typical applications include high-end business MPVs, ambulances, and logistics refrigerated vehicles, achieving continuous air optimization in high-frequency occupant environments.

3. Closed-loop Control with Multi-sensor Fusion

ZI100 supports linkage with Nexisense series air quality sensors (PM2.5+CO₂+AQS) and temperature-humidity sensors to form a complete in-vehicle air quality closed-loop management system:

• When AQS index >3 or CO₂>1200 ppm, automatically increase negative ion output to high level;

• Combined with temperature and humidity data, avoid ion activity decline in high humidity environments;

• Feed status back to T-Box via CAN/LIN bus to achieve OTA remote monitoring and diagnostics.

Selection Guide and Integration Considerations

Selection Key Parameter Reference

System Integration Considerations

1. Installation Position: Preferably placed in HVAC return air duct or downstream of evaporator, avoid direct facing occupant face; reserve ≥30 mm airflow path to ensure sufficient ion diffusion.

2. Power Supply and EMC: It is recommended to add TVS transient suppression diode and LC filter circuit to suppress vehicle transient pulses; signal lines should be kept away from high-voltage ignition lines and motor routing.

3. Control Logic: Recommended to link with AQS sensor to set thresholds (e.g., AQS≥3 to enable high level), avoid long-term high-concentration output causing occupant discomfort.

4. Ozone Monitoring: In regulation-sensitive projects, it is recommended to pair with ozone sensor for dual monitoring to ensure by-products always below 0.05 ppm.

5. Waterproof and Dustproof: Module body IP54 protection, installation position should avoid direct water mist and condensate accumulation.

6. Long-term Maintenance: Ceramic discharge body surface recommended to be cleaned every 12 months to avoid dust accumulation affecting discharge efficiency.

OEM Customization and Bulk Supply Advantages

Nexisense provides full-chain support for automotive supply chains:

• Interface Protocol Customization: Support PWM/LIN/CAN signal definition, custom message format;

• Structure Optimization: Provide different size housings, angle brackets, flexible FPC connections, snap/screw fixing methods;

• Parameter Fine-tuning: Adjust ion release angle and concentration distribution for specific vehicle duct layouts;

• Consistency Control: Concentration deviation between batches<8%, ozone by-product batch variation <10%, provide complete CoC, AEC-Q100 test reports and batch traceability;

• Supply Chain Assurance: Annual supply capacity >200,000 pieces, stable delivery, support new model SOP synchronous introduction and global after-sales spare parts supply.

These supports help Tier1 suppliers and OEMs significantly shorten validation cycles, reduce secondary development costs, and quickly respond to regulatory updates and market differentiation needs.

Frequently Asked Questions FAQ

1. Will the negative ion activity of ZI100 negative ion generator significantly decrease in high humidity environments?
   In >85% RH environment, the negative ion diffusion distance is slightly shortened, but the module's built-in compensation algorithm and ceramic discharge body design can maintain effective concentration >5×10⁶ ions/cm³; it is recommended to link with HVAC dehumidification function to avoid extreme condensation scenarios.

2. How to achieve closed-loop linkage control between ZI100 and vehicle AQS sensor?
   Receive AQS index signal through PWM or LIN interface, automatically enter medium/high level output when AQS>2.5; recommended to set hysteresis threshold (e.g., 2.0–3.0 range) to prevent frequent switching.

3. Will the module ozone by-products accumulate and exceed the standard after long-term operation?
   Employing a bipolar + narrowband filter design, typical ozone concentrations remain below 0.02 ppm. In actual projects, concentrations remain well below the GB/T 18801-2022 limit of 0.05 ppm even after continuous operation exceeding 5,000 hours.

4. Does ZI100 support OTA parameter adjustment with domain controller?
   Supports remote firmware upgrade and threshold configuration through LIN diagnostic service or dedicated UART debug port, enabling OTA function update in conjunction with T-Box.

5. What special attention is needed when using on 24V commercial vehicle systems?
   The module has built-in wide voltage regulation circuit, directly compatible with 24 V system; it is recommended to add TVS + varistor combination at the power input end to further enhance tolerance to load sudden changes and reverse pulses.

6. How to evaluate the ion diffusion coverage rate of ZI100 in specific vehicle air ducts?
   It is recommended to use a portable negative ion concentration meter to measure at multiple typical occupant positions (driver's seat, rear center); Nexisense can provide CFD simulation reports to assist in optimizing installation angle and position.

7. Does bulk supply provide third-party test reports and batch traceability documents?
   Each batch provides SGS or Intertek third-party ozone/negative ion concentration test report, batch CoC, discharge body material batch traceability and consistency statistics, supporting IATF 16949 system audit.

8. Is ZI100 directly compatible with existing aftermarket purifier control boards?
   Provides standard PWM control version and high/low level enable version, directly compatible with most aftermarket control boards; specific voltage or protocol can be customized when MOQ≥5000 pieces.

Nexisense ZI100 negative ion generator, with its high reliability, regulation-friendly design, and flexible integration capabilities, has been verified in projects of multiple Tier1 suppliers and OEMs. If you are advancing healthy cockpit platform development, HVAC air purification subsystem upgrade, or aftermarket product line expansion, welcome to contact the Nexisense technical team. We can provide detailed specification sheets, sample test kits, joint integration verification support, and customized development services to jointly formulate the most suitable technical route and supply chain solution for your project.