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应用领域
广泛应用于汽车电子、新能源、工业及消费电子领域
应用领域
广泛应用于汽车电子、新能源、工业及消费电子领域
Application of MOSFET and IGBT in Charging Piles
2024.06.17
1、Charging Pile Introduction
The charging pile refers to the charging device that provides energy replenishment for electric vehicles, and its function is similar to the fuel dispenser in the gas station, which can be fixed on the ground or wall, installed in public buildings (public buildings, shopping malls, public parking lots, etc.) and residential community parking lots or charging stations, and can charge various models of electric vehicles according to different voltage levels.
The input of the charging pile is directly connected to the AC grid, and the output is equipped with charging plugs for charging electric vehicles. The charging pile generally provides two charging methods: conventional charging and fast charging, and people can use specific charging cards to swipe the card on the human-computer interaction interface provided by the charging pile, and carry out corresponding charging operations and cost data printing, and the charging pile display screen can display data such as charging volume, cost, and charging time.
Charging piles can be divided into DC charging piles, AC charging piles and AC and DC integrated charging piles according to their charging methods.
AC charging piles
AC charging piles are fixed installed outside the electric vehicle and connected to the power grid to provide AC power to the electric vehicle on-board charger (i.e., the charger fixed on the electric vehicle). AC charging piles only provide power output, no charging function, need to be connected to the on-board charger to charge electric vehicles, which is equivalent to only playing a role in controlling the power supply.
DC charging piles
The basic components of DC charging piles include: power unit, control unit, metering unit, charging interface, power supply interface and human-computer interaction interface. The power unit refers to the DC charging module, and the control unit refers to the charging pile controller. In addition to the above core components, a DC charging pile also has some other important small components, such as sheet metal parts, fuses, relays and lightning protection devices. As a system integration product, in addition to the two components of "DC charging module" and "charging pile controller" constituting the technical core, the structural design is also one of the key points of the reliability design of the whole pile.
2、Charging Pile Market Analysis
Our country's charging module has gone through three generations of development, from the first generation of 7.5kW to the second generation of 15/20kW, and is now in the transition period from the second generation to the third generation of 30/40kW. In the current domestic market, 25% of the charging power is 60kW, 120kW and 150kW charging piles account for 30% and 32% of the share, and only 5% of the power exceeds 150kW.
In order to solve the charging problems faced by new energy vehicles, the state has vigorously promoted the development of charging infrastructure from the policy level, new energy subsidies from "car supplements" to "piles", charging infrastructure construction has been included in the "new infrastructure", and a number of policies have been continuously introduced, effectively promoting the rapid development of charging infrastructure.
3、Product Application and Advantages
Typical topology of charging piles
For the application of the charging pile market, Lonten Semiconductor's high-voltage super junction MOS, its product advantages:
For LLC topology, the body diode is optimized to enhance di/dt capability and reduce Qrr and drive interference.
Optimize Vth to make multi-tube parallel work more reliable;
Optimize the ratio of Qg and Coss/Ciss to reduce drive loss and improve drive anti-interference ability.
Optimized EAS to enhance avalanche resistance.
For the application of charging piles in the market, Lonten Semiconductor's IGBT, its product advantages:
Optimize Vceset to achieve greater conduction loss and reduce temperature rise.
Optimize the reverse parallel diode to enhance the di/dt capability;
Optimized switching speed up to 60kHZ.
The above advantages make Lonten products safer and more efficient in the application of charging piles.
Note: The above data is from Lonten Semiconductor, please indicate the source for reprinting.
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