Why do new energy vehicles choose electronic pumps?

Due to the need for insulation inside the motor, water cooling can only dissipate heat in the water jacket on the outer wall of the motor shell; because of its good insulation, oil cooling can directly contact and dissipate heat inside the motor, which is more effective, so it has become the first choice for drive motor heat dissipation.

With the development of electric drive systems towards high speed, high power, flat wire and all-in-one, the demand for single-machine heat dissipation of motors has increased rapidly, and the development trend of system integration has limited the path of accelerating heat dissipation through the outer surface. Oil-cooled motors have become the direction of technical evolution with their advantages of high cooling efficiency, high insulation and small size.

Compared with round wires, flat wire motors have advantages in efficiency, power density, heat dissipation, volume and weight. Due to the large gap between flat copper wires, cooling oil can easily penetrate into the end of the flat wire winding, taking away the heat of the middle layer conductor, which complements the advantages of oil cooling and promotes the penetration of oil cooling applications. Considering factors such as lightweight, cost reduction, and efficiency improvement, automakers and electric drive manufacturers have accelerated the evolution of drive motors, motor controllers, and reducers to "three-in-one" or "multi-in-one" drive assemblies. The rapid development of "multi-in-one" electric drive systems and high-voltage vehicles has increased the demand for heat dissipation, and oil cooling with higher heat dissipation efficiency is more suitable.

Comparison of mechanical water pumps and electronic water pumps

Comparison between electronic water pumps and electronic oil pumps

The increase in the complexity of thermal management of new energy vehicles has led to an increase in the use of water pumps per vehicle, and the technical upgrade from mechanical pumps to electronic pumps has led to an increase in the unit price of water pumps. Compared with fuel vehicles, there is generally one single electric drive, two dual electric drives, and now there are some with four electric drives, which requires four electronic oil pumps. The number of oil pumps used in hybrid gearboxes will be more, because there is also an oil pump in the traditional engine. Therefore, if the subsequent hybrid volume is relatively fast, the demand for electronic oil pumps will also be greatly increased.

According to the development trend and forecast of new energy vehicles, the electronic pump market is expected to reach a scale of tens of billions in the next five years. The electronic water pump market has moved from the previous "weak, small, and scattered" situation to large-scale production, and the TOP5 brands account for more than 60% of the market. Future development opportunities will mainly focus on the new application markets of high-power electronic water pumps and electronic oil pumps.

Ningbo Nide Mechanical Equipment Co., Ltd., was established in 2010, committing to provide customers with highly automated, intelligent, and flexible motor manufacturing solutions, and focusing on the production line of stator, rotor and final assembly of various motors.

We have provided customers with a variety of automobile motor automation manufacturing solutions, including alternator motor automatic production line, hairpin motor stator and rotor assembly line, oil pumps motor stator production line, single-phase motor winding machine, stator wire binding machine, stator shaping machine, motor rotor production line, rotor shafting machine, rotor winding machine, etc. to meet customers' high-efficiency and low-manpower motor manufacturing needs.