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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 SGT MOS in Electric two- and three-wheelers
2024.03.14
1、Introduction to electric two- and three-wheeled vehicles
In recent years, with the implementation of the new national standard and the emergence of new application scenarios such as balance bikes, scooters, and shared motorcycles, the electric two- and three-wheeler market has ushered in a new upsurge in development.
Electric two-wheelers: divided into electric bicycles, electric mopeds and electric motorcycles.
Electric bicycles refer to two-wheeled bicycles that use on-board batteries as auxiliary energy, have pedal riding ability, and can realize electric assistance or electric drive functions.
Electric mopeds refer to motorcycles powered by electricity, with a maximum design speed of no more than 50km/h and a maximum continuous rated power of no more than 4kW.
Electric motorcycles refer to motorcycles powered by electricity, with a maximum design speed of more than 50km/h and a maximum continuous rated power of their motors greater than 4kW.
Electric tricycles refer to three-wheeled transportation vehicles used to pull goods or people powered by batteries and motors. With its strong applicability, flexible mobility, simple maintenance, convenient maintenance, low price and other advantages, electric tricycles are widely used in short-distance transportation fields such as homes, urban and rural areas, individual rentals, factories, mining areas, sanitation, and community cleaning.
Electric balance bike refers to maintaining balance through its own overall coordination, and small size, low noise, easy to use, no need to control by hands, as a new wheeled means of transportation driven by power unit, used for personnel passengers has been favored by many people, is a new type of green environmental protection product used by modern people for short-distance transportation, leisure and entertainment.
2、Market Analysis
In the future, the electric tricycle and two-wheeler market will show a diversified growth pattern of "technology-driven, scenario deepening, and global expansion": driven by green logistics, rural consumption upgrading and export markets, the annual sales of electric tricycles are expected to exceed 13 million units after 2025, the penetration rate of lithium batteries will exceed 40%, and intelligent functions (such as intelligent anti-theft and remote monitoring) will become standard, and enterprises will expand to the field of special vehicles through modular design. Electric two-wheelers will accelerate the transformation to high-end and segmentation, the commercial landing of sodium-ion batteries will promote the endurance to exceed 200 kilometers, AI voice interaction, autonomous driving assistance and other technologies to improve user experience, overseas markets rely on the advantages of China's industrial chain to continue to expand, and global sales are expected to account for more than 60% in 2027, forming a two-wheel drive model of "domestic stock optimization + overseas incremental outbreak".
3、Product Application and Advantages
Electric two- and three-wheel BMS topology Electric two- and three-wheeler electric drive topology
The BMS architecture of electric two-wheelers is divided into four types: one difference is whether the charging and discharging MOS is placed on the high side or the low side; Another difference is whether the charge and discharge are connected in series or parallel.
At present, the BMS of two- and three-wheeled vehicles uses a bottom-edge series architecture, and the drive circuit is simple. The electric two- and three-wheeler electric drive uses the traditional H6 axle, and the mainstream adopts FOC control mode, which has the characteristics of small torque fluctuation, high efficiency, low noise and fast dynamic response. The motor stall current > 2000A, which has high requirements for the EAS of MOS.
For the electric two- and three-wheeler market, Lonten Semiconductor's medium and low voltage SGT MOS, its product advantages:
For the H6 topology, the body diode is optimized to reduce the reverse recovery loss.
Optimize the ratio of Qg and Coss/Ciss to reduce drive loss and improve drive anti-interference ability.
High opening voltage Vth, high Vth consistency, up to 30 tubes can be connected in parallel;
Optimize switching speed for better EMI characteristics;
Optimize EAS to enhance avalanche resistance;
Using split gate technology, lower Rdson.
The above advantages make the application of Lonten products in the battery BMS and electric drive of electric two- and three-wheelers simpler.
Note: The above data is from Lonten Semiconductor, please indicate the source for reprinting.
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