Relays
Mingni relay is born for safety and efficiency of charging and discharging. It has a contact resistance of ≤0.5mΩ and a 25% reduction in conduction loss, which helps to upgrade the energy efficiency of charging piles. Mingni relay is adapted in all scenarios, covering 10A-800A current and 1500V high-voltage specifications, compatible with AC/DC/air-cooled/liquid-cooled charging piles and energy storage BMS systems.
The advantages of Mingni relays
What are the advantages of ceramic high-voltage relays?
Ceramic high-voltage relays, with their material properties and structural design, perform excellently in scenarios requiring high voltage, high temperature, and high reliability. They are an ideal substitute for traditional plastic or organic material relays, especially suitable for fields that require strict safety and durability requirements.
What is a power relay and what are its advantages?
Power relay is an electromagnetic relay specially designed for controlling or switching medium to high power loads (such as high current and high voltage equipment). Its core function is to reliably control the on/off of high-power equipment such as motors, heaters, lighting systems, etc. Compared with ordinary signal relays (commonly used in low voltage, low current electronic circuits), power relays have significantly improved contact capacity, durability, and anti-interference ability.
Basic Concepts of Magnetic Holding Relays.
A Magnetic Latching Relay (also known as a Bistable Relay or Latching Relay) is a type of relay that uses a combination of permanent magnets and electromagnetic coils to maintain contact states (open/closed). Its defining feature is that it requires only a momentary pulse to switch states and retains its contact position even after power is removed. This design offers exceptional energy efficiency, reliability, and longevity, making it ideal for applications requiring low power consumption or frequent power interruptions.
Magnetic holding relays, through magnetic self-locking and pulse driving technology, perfectly solve the pain points of high power consumption and dependence on continuous power supply in traditional relays, becoming an ideal choice in the fields of smart grids, new energy, and the Internet of Things. Its core value lies in:
Energy saving: Static zero power consumption significantly extends the lifespan of battery equipment.
Safety: The power-off state is not lost, ensuring system reliability.
Durability: Long life design reduces maintenance costs.
What is a solid-state relay and what are its advantages?
Solid State Relay (SSR) is an electronic switch based on semiconductor devices such as thyristors, MOSFETs, and IGBTs, which relies entirely on electronic components to achieve on/off control of the circuit, without any mechanical contacts or moving parts. It achieves electrical isolation between input and output through isolation technologies such as optocouplers and transformers, and is widely used in circuits that require high reliability, fast response, and long lifespan.
magnetic holding relay series of Mingni Tech
Latching relay is a relay that uses permanent magnets or magnetic materials to maintain the contact state. Its core feature is the bistable design – after being triggered by pulse current, the contact state (closed or open) can be permanently maintained without the need for continuous power supply. This characteristic gives it significant advantages in low-power and long-life scenarios, and is widely used in fields such as smart meters, smart homes, and new energy.
TL313 series
- Load capacity: 150A/200A
- Fully sealed design
- Load capacity exceeds similar products by <35%
- Meet the requirements of magnetic cutting arc extinguishing
- Equipped with auxiliary switch, the contact gap can reach 1.5mm
- Typical applications: Supercharging PDU,Power module
TL802 series
- Load capacity: 50A/60A
- Equipped with manual switch
- Contact and coil withstand voltage 4000VAC
- Typical application: AC charging station
TL910 series
- Load capacity: 60A/80A/90A/100A
- Multiple pin options: PCB installation, wiring installation meets sealing requirements
- Coil and contact creepage distance>8mm
- Typical applications: Charging station module, PDU module
TL913 series
- Load capacity: 150A/200A
- Small volume, large load
- Specially designed for 60KW power module overcharging PDU
- Load capacity exceeds similar products by 35%
- Meet the requirements of magnetic cutting arc extinguishing
- Equipped with auxiliary switch, the contact gap can reach 1.5mm
- Typical application: Supercharging PDU
TL919 series
- Load capacity: 120A/150A
- Specially designed for overcharging PDU modules
- High and low voltage separation, PCB installation
- Meet the requirements of magnetic cutting arc extinguishing
- Equipped with auxiliary switch
- Typical application: PDU module
TL929 series
- Load capacity: 120A/150A
- Specially designed for overcharging PDU modules
- High and low voltage separation, PCB installation
- Meet the requirements of magnetic cutting arc extinguishing
- Equipped with auxiliary switch
- Typical application: PDU module
power relay of mingni tech
Power relays have become the “guardians of power switches” in high-power scenarios such as industrial control and energy management by enhancing contact capacity, arc extinguishing ability, and environmental adaptability. Its core advantage lies in balancing high-power switching requirements with long-term reliability, and it is an indispensable underlying executing component in automation systems.
TR90
- Load capacity: 40A/50A/60A
- Optional magnetic arc extinguishing function
- Maximum DC switching voltage 110VDC
- The maximum contact gap can reach 3.0mm
- Meet the short-circuit current of 3000A
- Typical applications: AC charging stations, inverters
TR161
- Load capacity: 40A/50A
- Height only: 20.5mm
- Corner contact and coil withstand voltage: 4500VAC
- Maximum temperature resistance: 105 ℃
- Typical applications: portable charging gun, inverter
Ceramic high voltage relay of mingni tech
Ceramic high-voltage relay is an electrical switch device designed specifically for high voltage and high current environments, with its core structure (such as contacts, insulation materials, or housing) made of ceramic materials. This type of relay plays a role in controlling, switching, or isolating high-voltage circuits, especially suitable for scenarios that require extremely high insulation, voltage resistance, and reliability.
MN21
- Rated load: 50A/100A/150A
- Ceramic high voltage packaging
- Equipped with auxiliary switch
- Voltage resistance: 450VDC/750VDC 11000VDC
- Typical applications: Pre charging, energy storage, small DC charging stations, etc
MN10
- Rated load: 50A/100A/150A
- Ceramic high voltage packaging
- Equipped with auxiliary switch
- Voltage resistance: 450VDC/750VDC 11000VDC
- Typical applications: Pre charging, energy storage, small DC charging stations, etc
MN19
- Rated load: 150A/200A/250A/300A/350A/400A
- Ceramic high voltage packaging
- Voltage withstand: 1000VDC/500VDC
- Typical applications: charging stations, energy storage
MN20
- Rated load: 50A/100A/150A
- Ceramic high voltage packaging
- Equipped with auxiliary switch
- Voltage resistance: 450VDC/750VDC 11000VDC
- Typical applications: Pre charging, energy storage, small DC charging stations, etc
Applications
The main application areas of Mingni relay switch include: electric vehicles and electric vehicle chargers, hybrid vehicles, fuel vehicles, photovoltaic wind power generation system power storage systems, smart home appliances, industrial machinery, etc.
EV charging station
The selection and application of relays for car charging stations depend on the charging type (DC/AC) and functional requirements. DC fast charging piles usually use high-voltage DC relays to cope with high voltage (up to 1000V) and high current (above 200A) scenarios. Their arc resistant design and fast power-off capability ensure safe control of the main power supply; AC charging stations mainly rely on AC contactors, which support high-frequency switching and high current on-off (such as 32A-250A) to ensure stable power supply. In auxiliary control, solid-state relays (SSRs) are gradually used for signal switching and low-voltage circuits due to their non-contact and fast response characteristics, while temperature relays and time relays are responsible for overheat protection and timing management, respectively.
Photovoltaic energy storage
The selection of relays for photovoltaic energy storage systems should take into account high voltage, high current, and adaptability to complex environments. The core types include: high-voltage direct current relays (withstand voltage of 1500V DC, carrying current of over 400A, used in the main circuit of photovoltaic arrays and energy storage batteries), pre charging relays (suppress surge impact, protect inverters and capacitors), solid-state relays (SSR) (contactless high-frequency control, suitable for fast shutdown of series and MPPT signal switching), and anti backflow relays (real-time monitoring of current direction to prevent energy backflow). The temperature relay is embedded in the battery management system (BMS) to accurately monitor the risk of overheating.
Power system
The application of relays in power systems is extensive and diverse, mainly selected based on protection requirements and technical principles. Common types of relays include over power relays, current relays (used for short circuit and overload protection), distance relays (used to locate transmission line faults through impedance measurement), differential relays (used to protect transformers and generators from internal faults), directional relays (used for directional isolation faults in multiple power source systems), and ground fault relays (used to detect grounding anomalies). In addition, voltage and frequency relays are used to monitor system voltage fluctuations and frequency stability, respectively.
Smart home appliances
The selection of relays in smart home appliances should comprehensively consider factors such as load characteristics, power, lifespan, and cost. Common types of relays include electromagnetic relays (low-cost, suitable for low to medium power equipment, but subject to mechanical wear), solid-state relays (SSRs) (contactless, long lifespan, suitable for high-frequency switching and silent scenarios), magnetic holding relays (low-power, power-off memory, mostly used for battery powered equipment), power relays (high voltage and high current resistance, suitable for high-power appliances such as air conditioners and washing machines), and safety relays (redundant design, used for high safety scenarios such as gas stoves).
Mingni ODM&OEM Service
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Feature customization
We can customize according to customer requirements, including connectors, OCPP, RFID, Load balancing, and APP software customization.
LOGO customization
We can customize your logo on the product appearance as well as the system interface to strengthen your branding, one can also be customized.
Certifications
We can make local EV car charger certifications such as CE, FCC, CSA, RoHS or ETL certifications.
Power customization
We can customize a wide range of car chargers from home to commercial, with power ranging from 7KW to 320KW, to meet the customization needs of most customers.
Customized appearance
We can customize the appearance for customers, only need customers to provide drawings and design files, we can provide finished samples within 10 days.
Hardware customization
We can choose the most suitable hardware components according to the customer’s requirements, and produce a car charger that meets the customer’s requirements.
EV Charging station of Mingni
2-Year Warranty
Our electric vehicle chargers offer a 2-year warranty and we are very confident in the reliability and safety of our products to ensure that your charging station can be used for a long time.
Certification
Our products are fully certified to ensure that customers can use them with confidence. Our chargers focus on energy efficiency and reduce environmental impact.
Waterproof Design
Our outdoor car chargers are designed with waterproof IP54 or above to ensure perfect operation in any weather, stable performance throughout the year, and long-lasting normal use of the product.
Easy to install
To assist customers in installation, we provide the charging station with videos of the installation process to YOUTUBE, and customers can refer to the video to set it up quickly and effectively.
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