Although pure electric car has a low cost, quiet and smooth power output, etc., but in the current consumption of the car, still not really consumer’s first choice. The reason, and the density of the battery caused by the battery capacity, as well as the mileage and energy performance a definite link.
circle of friends some time ago maxed Porsche Taycan, let pure electric vehicles and combinations of such transmissions, in front of the general public. The original is still under discussion whether pure electric vehicles require transmission of voice, all pale at this time. In fact, in Taycan them, there is a neglected technology, and that is electrically driven triple of.
For pure electric vehicles, is certainly the most important part of the three-level system; that is, we often say that the motor, gear box and power control system. These three parts synergy will directly affect the pure electric car and driving experience.
At present motor pure electric vehicles we contact used , basically PMSM and the fixed transmission gear ratio based binding structure. Thanks to constant motor torque output, making pure electric vehicle performance is not only strong and sustained than fuel vehicles, while allows single-speed gearbox can be mated. However, when the energy consumption at high speeds to make life battery pack dropped significantly, further affecting consumers the impression of pure electric vehicles.
wherein, the fixed transmission gear ratio is decreased electric the main reason for the high-speed car in working condition endurance. Not according to the conditions of the vehicle, to adjust the state of the drive motor. Most simply, at high speeds can be reduced operating speed of the drive motor, the proportion of slow discharge of the battery pack at a high speed environment, byPlus mileage.
and the portion of the motor, gearbox and electric control system, located in various parts from the past to process together the vehicle, reducing the high voltage cable arrangement UVW reduce the weight of a certain proportion.
As a conventional automotive chassis platform used, in pure electric vehicle drive system of the electric field of the “triple play” of consideration, that It can reduce development costs, the formation of large-scale production and use and modular. E BYD e.g. internet, is the electronic control system, integrated into a motor and a speed reducer, and simultaneously the charge distribution module integrates the conventional DC-DC converter, a high-pressure PDUs OBC weight distribution box and distribution system. According to data provided by the manufacturer, the weight percentage of 25 can be reduced, the cost can be reduced at the same time the percentage of 40.
In the current , the domestic part of pure electric vehicles in the mechanical structure, most of them still are decentralized layout. And their so-called platform, is more concerned about the chassis layout and the placement of the battery pack. As part of the focus on the structure of the electric drive delivery will have less.
In contrast to foreign suppliers, which is Transmission is by virtue of the experience accumulated over the years, prior to the OEMs to integrate research electric system. Such as Borg Warner, Aisin and ZF have launched their own “triple play” electric drive system. ZF example an electric drive system, Mercedes EQC two structural powered asynchronous machine is 300kW.
Continental’s electric drive system integration of the road, is walking in the other suppliersfront. Not long ago, formerly known as Continental’s Powertrain Division Group Vitesco Technologies, announced the signing of an agreement with PSA Peugeot Citroen and Hyundai, provides a highly integrated electric drive system for the two companies. The system will Peugeot e-208, using the Opel Corsa is mounted on an electric version of the model. In China, Ang Xinuo new energy models and Festa pure electric version, which will be equipped with the company’s electric drive system.
integrated electric drive system, no doubt, is to enhance the energy performance of pure electric vehicles. Reduce weight, reduce energy loss during transmission and optimizes the transmission stream path, and reduce production costs pure electric vehicle, to reduce the use of expensive raw materials in a high voltage cable, are in development for the layout and pure electric vehicles trying; while but also in addressing user pain points, clearing the way for the promotion of pure electric vehicles.