Pure electric motor driving system and electric vehicle
A motor drive system, electric vehicle technology, applied in the direction of electric vehicles, control drives, vehicle components, etc., can solve the problems of small torque, reduce powertrain climbing performance, etc., achieve high drive efficiency, improve power system efficiency, improve The effect of system efficiency
Pending Publication Date: 2019-08-16
ZHENGZHOU YUTONG BUS CO LTD
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Problems solved by technology
[0004] The purpose of the present invention is to provide a pure electric motor drive system to solve the problem that the dual-motor powertrain in the prior art has a small torque when climbing a slope, thereby reducing the climbing performance of the powertrain; the purpose of the present invention It is also to provide an electric vehicle using the pure electric motor drive system
Method used
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Embodiment Construction
[0022] Embodiments of the present invention will be further described below in conjunction with the accompanying drawings.
[0023] Specific embodiment one of the pure electric motor drive system of the present invention, as figure 1 As shown, the pure electric motor drive system includes a main motor 14, an auxiliary motor 3, and a planetary row connected to the main motor 14 and the auxiliary motor 3. A lock-up clutch 11 is arranged between the main motor 14 and the planetary row, and the auxiliary motor 3 and A gearbox 5 is arranged between the planetary rows, wherein the planetary row constitutes a power coupling mechanism, and in other embodiments, the power coupling mechanism may be a gear. In this embodiment, the main motor 14 is connected to the planet carrier 10 of the planetary row and realizes direct drive transmission to the differential 7, and the auxiliary motor 3 is connected to the ring gear 9 of the planetary row through the gearbox 5 and the transmission gear...
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The invention relates to a pure electric motor driving system and an electric vehicle. The pure electric motor driving system comprises a main motor, an auxiliary motor and a dynamic coupling mechanism, wherein the dynamic coupling mechanism is in transmission connection with the main motor and the auxiliary motor; and a gearbox is arranged between the auxiliary motor and the dynamic coupling mechanism. The double motors can conduct driving respectively and independently, can also jointly drive the electric vehicle to travel, and can conduct respective driving or joint driving at different torque and power demands, the torque and power redundancy of the motors is lowered, and the vehicle driving efficiency is high; and through the effects of speed decreasing and torque increasing of the gearbox, a driving motor with the small torque can be selected as the auxiliary motor, thus the cost is lowered, through different gear choices, the auxiliary motor works in a high-efficiency area, thesystem efficiency is improved, in the gear shifting process of the gearbox, torque compensation is conducted through the main motor, and thus continuous power gear shifting is achieved.
Description
technical field [0001] The invention relates to a pure electric motor drive system and an electric vehicle. Background technique [0002] At present, in order to reduce the fuel consumption of electric vehicles and achieve the purpose of energy saving and emission reduction, the major automobile manufacturers in the world are developing various hybrid and pure electric electric vehicles. With the development of electric vehicles, people put forward higher requirements for the maximum speed, acceleration, gradeability and comfort of electric vehicles. The driving mode and transmission structure of electric vehicles determine the power, economy and comfort of electric vehicles. Due to the limitation of the characteristics of the motor, the traditional single-motor direct-drive mode can only meet the dynamic performance of electric vehicles by increasing the power of the motor, which not only increases the volume of the motor, but also increases the operating cost, and causes t...
Claims
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Patent Timeline
Login to View More IPC IPC(8): B60K1/02B60K17/02B60K17/08B60L15/20B60L15/38
CPCB60K1/02B60K17/02B60K17/08B60L15/2045B60L15/2054B60L15/38Y02T10/72
Inventor 阎备战张晓伟左利锋肖严强岑威王富生蔡旭东
Owner ZHENGZHOU YUTONG BUS CO LTD