Driven by the rapid growth in production and sales of new energy vehicles in recent years, the automotive high-voltage power supply industry has embraced sound development opportunities, fueling the swift expansion of the global market scale for related products.
Main products in this sector include on-board chargers (OBC), on-board DC/DC converters and integrated automotive power supply products, with respective functions elaborated as follows:
It is categorized into unidirectional and bidirectional types. The unidirectional on-board charger converts grid electricity into direct current suitable for vehicle energy storage devices to realize battery charging, while performing protection and control over the whole charging process to ensure operational safety.Based on data transmitted by the Battery Management System (BMS), it dynamically adjusts charging current and voltage parameters to achieve safe and efficient charging.The bidirectional on-board charger can charge vehicle power batteries in forward mode, and draw power from batteries for inversion to supply electricity to external devices or feed power back to the power grid in reverse mode. It serves as a core component to realize V2G, V2L and V2V functions.
It converts high-voltage electricity from vehicle power batteries into low-voltage direct current, which supplies power for low-voltage vehicle electrical equipment such as in-vehicle infotainment systems, instrument panels, vehicle lights and electric steering systems.
Tailored to customized demands of complete vehicle manufacturers, such products integrate multiple components including on-board chargers, DC/DC converters and power distribution units (PDU) into an all-in-one vehicle power system. This integration saves vehicle interior space, simplifies vehicle wiring design, cuts manufacturing costs, and improves vehicle R&D efficiency and product quality. Typical products cover 2-in-1 modules (OBC & DC/DC, DC/DC & PDU), 3-in-1 modules (OBC, DC/DC & PDU) and other multi-functional integrated products with higher integration levels.
Against the rising market demands of the new energy vehicle industry, domestic enterprises in this field are attaching greater importance to technological research and product innovation, which is driving industrial upgrading and transformation.
In line with the electrification, intelligent and connected development trend of new energy vehicles, the automotive high-voltage power supply industry will generally evolve toward higher conversion efficiency, higher power density, stronger reliability and deeper integration, with continuous upgrading of technical specifications.Meanwhile, amid the development of the energy internet, vehicle-mounted high-voltage power systems are gradually evolving towards bidirectional charging and discharging. By enabling V2G, V2L and V2V applications, they will play a pivotal role in the future construction of the energy internet.Furthermore, high-voltage power supply systems will achieve further in-depth integration with other auto parts such as motor controllers.
As an indispensable core component of new energy vehicles, one complete set of automotive high-voltage power supply system is standardly equipped for each new energy vehicle. Its market scale expands steadily alongside the growing sales volume of new energy vehicles.In accordance with current policy orientations, global sales of new energy vehicles are expected to maintain substantial growth momentum by 2035. The vigorous development of the downstream new energy vehicle industry will unlock broad development prospects for the automotive high-voltage power supply sector.
