P step actuating mechanism of electric control mechanical automatic variable-speed device for electrically-operated car and control system

Abstract

The invention relates to a P step actuating mechanism of an electric control mechanical automatic variable-speed device for an electrically-operated car and a control system, comprising a P step position detection device of a gearshift handle, a P step electronic control device, a driving device, a position detection device of the driving device, a pawl and a ratchet wheel, wherein the P step electronic control device is electrically connected with the P step position detection device of the gearshift handle, the driving device and the position detection device of the driving device, the position detection device of the driving device and the driving device are arranged in a matching way for detecting the rotation position of a driving shaft of the driving device, the driving device, the pawl and the ratchet wheel are arranged in a matching way so as to drive the pawl to lock the ratchet wheel by the driving device, and the pawl is driven by the driving device or an elastic component to unlock the ratchet wheel. Preferably, the driving shaft drives the pawl by a transmission mechanism, and the P step electronic control device also is electrically connected with a car speed detection device. The invention has skillful design and convenient use, has very good braking effect for electric cars, increases the braking reliability of the electrically-operated cars greatly and is suitable for large-scale popularization and application.

Description

technical field [0001] The invention relates to the technical field of automobile safety systems, in particular to the technical field of automobile parking systems, and specifically refers to a P-gear actuator and control system of an electronically controlled mechanical automatic transmission for electric vehicles. Background technique [0002] The electric vehicle market has great potential. According to the global research results of Bain & Company, a world-renowned strategic consulting company, in terms of the current global car sales scale, the number of consumers who choose to buy electric vehicles can reach 1.5 million, of which 200,000 will come from China . There is no doubt that electric vehicles have the advantages of energy saving, environmental protection, and reduced fuel consumption. [0003] But most electric cars are front-wheel drive at present, and its hand brake all is to brake the rear wheel, and the braking force is relatively small, and the wheel can...

AI Technical Summary

Problems solved by technology

[0003] However, at present, most electric cars are driven by the front wheels, and the hand brakes all brake the rear wheels. The braking force is relatively small, and the wheels cannot be completely locked.

In particular, when an electric vehicle is parked on a slope, use the handbrake, and the vehicle is very likely to slide because it is not completely locked.

In addition, when an electric vehicle starts on a slope, the vehicle has no power at the beginning, and the vehicle may roll backwards, which is very detrimental to driving safety

[0004] In order to solve the problem of unreliable parking of electric vehicles simply using the hand brake, a safe parking system for electric vehicles is needed, which has a very good braking effect and can greatly increase the reliability of parking electric vehicles

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