Electric vehicle rear wheel brake device

Abstract

The invention discloses a rear wheel braking device for an electric vehicle. The structure includes a differential, a single arm yoke, a fixed frame, a rear wheel, a lower arm yoke, a spring, and a transmission cross shaft. The invention has the effect that the fixed frame is installed On the chassis of the car, and under the suspension structure composed of the differential, single-arm wishbone, lower arm wishbone, rear suspension rod and spring, and the transmission cross-axis connection, the rear wheels have an independent damping effect, and the rear wheels are connected through Under the action of the composed structure, the rear wheels can be braked off-axis, that is, the rear wheels are detached from the transmission of the transmission horizontal shaft during the braking process, so as to achieve efficient and fast braking effect on the rear wheels, and there is no need for braking during the braking process. It will generate a large amount of frictional heat, which is beneficial to the heat dissipation efficiency after braking.

Description

technical field [0001] The invention relates to the field of braking devices for electric vehicles, in particular to a rear wheel braking device for electric vehicles. Background technique [0002] Pure electric vehicles, compared with fuel vehicles, the main difference lies in the four major components, drive motor, speed controller, power battery, and on-board charger. Compared with gas stations, the quality difference of pure electric vehicles depends on these four components. The value of the parts also depends on the quality of these four parts. The brake device is included in the speed controller. The brakes used in cars are almost all friction type, which can be divided into two categories: drum type and disc type. The rotating element in the friction pair of the drum brake is the brake drum, and its working surface is a cylindrical surface. The rotating element of the disc brake is the rotating brake disc, with the end face as the working surface. Compared with fuel...

AI Technical Summary

Problems solved by technology

[0002] Pure electric vehicles, compared with fuel vehicles, the main difference lies in the four major components, drive motor, speed controller, power battery, and on-board charger. Compared with gas stations, the quality difference of pure electric vehicles depends on these four components. The value of the parts also depends on the quality of these four parts. The brake device is included in the speed controller. The brakes used in cars are almost all friction type, which can be divided into two categories: drum type and disc type. The rotating element in the friction pair of the drum brake is the brake drum, and its working surface is a cylindrical surface. The rotating element of the disc brake is the rotating brake disc, with the end face as the working surface. Compared with fuel vehicles, the temperature is relatively high, and part of the heat generated by friction during the braking process will be guided to the bottom of the chassis, which will easily lead to a decrease in the heat dissipation efficiency of the battery above the chassis of the electric vehicle, and the electric vehicle is driven by a motor. The coupling shaft in the emergency stop brake will produce a certain reaction force on the motor, which will reduce the service life of the motor and the gearbox. Therefore, it is necessary to develop a rear wheel brake device for electric vehicles to solve the temperature under the chassis of the electric vehicle during driving. Compared with fuel vehicles, the temperature is relatively high, and part of the heat generated by friction during the braking process will be guided to the bottom of the chassis, which will easily lead to a decrease in the heat dissipation efficiency of the battery above the chassis of the electric vehicle, and the electric vehicle is driven by a motor. The coupling shaft in the parking brake will produce a certain reaction force on the motor, which will reduce the service life of the motor and gearbox

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