SJK: High-precision oscillators & filters for global tech industries.
sjk@q-crystal.com+86 755 8835 2869
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Centralized Control of Photovoltaic Power Stations
Maximum Power Point Tracking (MPPT) for solar panel arrays, AI-based power generation prediction, and coordinated scheduling of module clusters.
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Distributed Photovoltaic Systems
Fault diagnosis of household/commercial photovoltaic panels and grid synchronization.
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Photovoltaic Operation and Maintenance Monitoring
Real-time collection of temperature and light intensity for outdoor photovoltaic modules, remote operation and maintenance data transmission.
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Photovoltaic Inverters
DC to AC conversion.
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Recommended Oscillator Type | Model Reference | Core Advantages | Adaptation Value |
| Photovoltaic Panel Sensors | SMD Crystal (XTAL) |
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High temperature resistance (125℃), low power consumption, high stability (±10ppm), small size (starting at 2.0*1.6mm) | Suitable for long-term outdoor use, small resonance resistance for easy oscillation, low power consumption reduces sensor power supply consumption |
| Power Station Central Control Platform | Temperature Compensated Crystal Oscillator (TCXO) | 7X, 7Q, 8W, 5T | Extremely high temperature stability (±0.5ppm@-40℃~85℃), low voltage (1.8V~3.3V) | Ensures time synchronization accuracy for multi-array coordinated scheduling, enabling high-precision coordinated control. |
| Grid-connected Communication Module | Low EMI Oscillator (Spread Spectrum Oscillator) | Custom | Low electromagnetic radiation, strong anti-interference, stable frequency (±20ppm) | Significantly reduces electromagnetic radiation from the oscillator’s main frequency, avoids grid electromagnetic interference, ensuring stable grid data transmission. |
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Lithium Battery Energy Storage (BMS)
Charge and discharge balance control, battery health status (SOH) monitoring, peak shaving and valley filling scheduling for the grid.
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Household Energy Storage Devices
Intelligent control of household energy distribution, photovoltaic-storage linkage, emergency power switching.
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Industrial-Grade Energy Storage Cabinets
Energy storage capacity monitoring in high-temperature environments, collaborative operation of multiple cabinets.
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Recommended Oscillator Type | Model Reference | Core Advantages | Adaptation Value |
| Battery Management System (BMS) | Glass Package Crystal |
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High temperature resistance, hard cover that is not easily deformed, supports potting process, low thermal conductivity | Suitable for closed high-temperature environments of energy storage cabinets, ensuring stable BMS operation |
| Energy Storage Scheduling Main Control Unit | HCMOS Clock Oscillator (XO) | 3N, 2N, 1N, 0N | Wide output frequency range (1MHz~200MHz), strong voltage compatibility (1.8V~3.3V), low jitter | Supports precise calculations for millisecond-level charge and discharge regulation |
| Outdoor Energy Storage Devices | SMD Crystal (XTAL) | 7R, 7L | Moisture resistance, strong cost adaptability, reliable stability | Meets cost-effectiveness requirements for household/small energy storage devices |
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Electric Vehicle Three-Phase System
Precise timing control for battery management (BMS), motor control (MCU), and vehicle control system (VCU).
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Charging Piles
Intelligent charging scheduling (multi-vehicle load distribution), charging safety monitoring (overtemperature/overcurrent/overvoltage detection), wireless communication coordination.
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Onboard Energy Monitoring
Range prediction, intelligent control of energy recovery systems.
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Recommended Oscillator Type | Model Reference | Core Advantages | Adaptation Value |
| Three-Phase System Control Unit | MEMS Oscillator |
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High stability (±25ppm@-40℃~85℃), extremely strong anti-shock (60000G), plastic shell resistant to salt fog and corrosion | Adaptable to vibration environments in vehicles, ensuring reliable operation of the three-phase system |
| Charging Pile Main Control Board | Glass Package Crystal | 7Z, 6I | Good high temperature resistance, low thermal conductivity, supports potting process | Adapts to outdoor high-temperature exposure, extending the service life of charging piles |
| Onboard Communication and Positioning Module | Temperature Compensated Crystal Oscillator (TCXO) | 7X, 5T | Wide temperature stability, low voltage, flexible output mode | Ensures the accuracy of satellite positioning and real-time communication for vehicles |
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Wind Turbine Control
Intelligent pitch angle adjustment, turbine speed control, cabin environment monitoring (temperature, humidity, vibration).
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Wind Farm Operation and Maintenance Management
Gearbox/generator fault early warning, wind power forecasting, coordinated scheduling of multiple turbines.
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Remote Wind Farm Data Transmission
Remote uploading of operation and maintenance data in harsh outdoor environments.
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Recommended Oscillator Type | Model Reference | Core Advantages | Adaptation Value |
| Wind Turbine Main Control System | Oven-Controlled Crystal Oscillator (OCXO) |
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ppb-level ultra-high frequency stability, strong anti-interference, minimal temperature impact | Ensures high-precision timing for pitch angle adjustment and speed control |
| Blade Vibration Monitoring Sensor | SMD Crystal (XTAL) | 7U, 7E, 7F, 6I, 7L | Low power consumption, small size, high stability (±10ppm) | Suitable for sensor battery power supply, long-term stable vibration data collection |
| Wind Farm Remote Communication Module | Low EMI Oscillator (Spread Spectrum Oscillator) | Custom | Anti-electromagnetic interference, stable frequency, wide voltage adaptability | Adapts to complex electromagnetic environments of remote wind farms, ensuring distortion-free data transmission |
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Electrolyzer Hydrogen Production
Intelligent optimization of hydrogen production efficiency, temperature/pressure monitoring during electrolysis, hydrogen purity detection.
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Hydrogen Storage
Real-time pressure monitoring of high-pressure storage tanks, safety warning for storage environment.
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Fuel Cells
Intelligent control of the reaction process, monitoring of fuel cell stack health status.
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Recommended Oscillator Type | Model Reference | Core Advantages | Adaptation Value |
| Electrolyzer Control Module | Glass Package Crystal |
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High temperature resistance, anti-deformation, supports potting process | Suitable for high-temperature working environments in electrolyzers, ensuring control accuracy |
| Fuel Cell Stack Monitoring Unit | Temperature Compensated Crystal Oscillator (TCXO) | 7Q, 8W | High temperature stability (±0.5ppm), low power consumption | Accurately collects stack temperature and voltage data, supporting AI control |
| High-Pressure Storage Safety Monitoring Device | HCMOS Clock Oscillator (XO) | 2N, 0N | High circuit integration, strong voltage compatibility, quick startup | Ensures real-time transmission of pressure monitoring data, triggering safety warnings promptly |
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Founded in 1989, SJK specializes in the manufacturing of crystal resonators and oscillators. With extensive experience in miniaturization, high precision, and low power consumption, our components are widely used across multiple industries.
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Tel: +86 755 8835 2869
Email: sjk@q-crystal.com
Add: 12/F, Building 3C, TianAn Cloud Park Phase 1, Bantian, Longgang District, Shenzhen, 518129, China