BYD has launched its fifth-generation DM (dual-module) hybrid technology, setting a new benchmark in fuel efficiency and hybrid performance. In a press conference, Wang Chuanfu, Chairman and President of BYD, announced that the new technology achieves an unprecedented power loss fuel consumption of just 2.9L/100km. This innovation promises a comprehensive range of up to 2100 kilometers and an impressive engine thermal efficiency of 46.06%.
The latest DM technology makes its debut in the Seal 06 model. Under New European Driving Cycle (NEDC) conditions, the Seal 06 boasts a fuel consumption of 2.9L/100km and a consumption of 10.7kWh/100km under China Light-Duty Vehicle Test Cycle (CLTC) conditions. It also accelerates from 0 to 100 km/h in just 7.5 seconds, highlighting the blend of efficiency and performance.
Building on the foundations of the fourth-generation DM technology, the fifth generation includes significant enhancements. The 1.5L plug-in hybrid engine now delivers a maximum power of 74 kW and maximum torque of 126 Nm. The system is equipped with advanced plug-in hybrid dedicated power blade batteries available in 10.08kWh and 15.87kWh capacities.
The enhanced EHS hybrid system offers two variants: EHS120 with a maximum power of 120 kW and torque of 210 Nm, and EHS160 with a maximum power of 160 kW and torque of 260 Nm. These upgrades result in a comprehensive operating efficiency of 92%, a 5% increase, and a power density of 75.47kW/L, reflecting a 15.5% improvement.
Battery technology also sees significant advancements. The energy density of the plug-in hybrid blade battery has increased by 15.9% to 115Wh/kg. The discharge rate has improved by 33% to 16C, while the feedback rate has seen a 20.3% increase to 5C. These enhancements contribute to ultimate safety and uniform temperature management.
In charging capabilities, the system’s AC slow charging has been upgraded from 3.3kW to 6.6kW, cutting the charging time by 60%. DC fast charging now allows the state of charge (SOC) to go from 30% to 80% in just 21 minutes, reducing the charging duration by 36%. Additionally, external discharge capability has been upgraded from 3.3kW to 6kW.
A pioneering 12V lithium iron phosphate small battery, the first of its kind in mass production, promises a lifelong service without the need for replacement. This innovation significantly reduces vehicle weight and enhances overall efficiency.
The fifth-generation thermal management architecture integrates front-end, cockpit, and battery thermal management systems, achieving 10% energy savings at high temperatures and 8% at low temperatures. The new second-generation battery pulse self-heating system increases heating speed by 60% during charging, driving, and parking. The cabin thermal management system now features a more efficient compressor, ensuring quicker and more effective temperature control.
BYD’s fifth-generation DM hybrid technology marks a significant leap forward in hybrid vehicle performance and efficiency, reinforcing the company’s position as a leader in the automotive industry’s transition towards sustainable mobility.
