A pure electric vehicle gear automatic switching system

Abstract

The invention discloses a pure electric automobile gear automatic switching system. The pure electric automobile gear automatic switching system comprises a central control module, a power supply module and a gear switching module; the power supply module is correspondingly connected with the gear switching module, the central control module and a driving motor; an output end of the gear switchingmodule is connected with the driving motor; the central control module is wirelessly connected with the gear switching module; and the central control module comprises a central processor, a vehiclespeed sensor, a torque angle sensor, a signal collecting module and a communication transmission module. According to the pure electric automobile gear automatic switching system, multiple groups of information during the running of an automobile are collected by using multiple sensors and signal collecting modules; automobile total working condition data are organized by using the central processor; and then a matching relation between gear information and vehicle speed working condition data is determined by using an automatic gear shifting module; and finally, gear shifting information is automatically transmitted to the gear shifting executing mechanism to compare signals; and therefore, an operation of switching gears is carried out, the gears are automatically switched in the full process, and the operation efficiency of the driving motor is greatly enhanced.

Description

technical field [0001] The invention relates to the technical field of electric vehicles, in particular to an automatic gear switching system for pure electric vehicles. Background technique [0002] A pure electric vehicle is a vehicle driven by an electronic control system. It is driven by electric energy, has no emissions, and will not pollute the environment. Today, when fuel oil is gradually dying out, it is an inevitable trend of the development of the times for pure electric vehicles to replace traditional fuel vehicles. Compared with fuel vehicles , pure electric vehicles have the advantages of green environmental protection and sustainable energy. [0003] Existing cars generally cut off the power transmission of the whole vehicle through the separation of the clutch during the gear shifting process, and rely on the sliding friction of the synchronous ring to complete the synchronization process to achieve gear shifting. For pure electric vehicles, this structure is...

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Problems solved by technology

[0003] Existing cars generally cut off the power transmission of the whole vehicle through the separation of the clutch during the gear shifting process, and rely on the sliding friction of the synchronous ring to complete the synchronization process to achieve gear shifting. For pure electric vehicles, this structure is The coordinated control of the drive motor, transmission and shift actuator is very complicated and not convenient enough to automatically adjust the gear position according to the current vehicle speed, use high torque to start or climb at low speed, and use low gear to drive at high speed , can not be switched automatically, which greatly affects the operating efficiency of the motor, the power consumption is serious, and it is easy to generate noise and shift shock during the shifting process, and the shifting quality is not high, which seriously affects the smoothness of shifting and riding comfort of the vehicle , therefore, the present invention proposes a pure electric vehicle gear automatic switching system to solve the problems existing in the prior art

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