Mechanical self-adaption speed changer for electric car and multi-grade automatic speed changers thereof

Abstract

The invention provides a mechanical self-adaption speed changer for an electric car. The mechanical self-adaption speed changer for the electric car comprises a shell, a first speed changing mechanism, a centrifugal clutch and a bi-directional overrun clutch, wherein the first speed changing mechanism is used for increasing speed, holes are formed in both the left and the right side walls of the shell, an input shaft of a motor of the electric car penetrates through a hole formed in the right side wall, the input shaft is connected with one end of an inner circle of the bi-directional overrun clutch, an output shaft of the motor penetrates through a hole formed in the left side wall, the output shaft is connected with the other end of an outer circle of the bi-directional overrun clutch, the centrifugal clutch is arranged on the input shaft, the inner circle of the input shaft moves along with the input shaft in a rotation mode, the outer circle of the centrifugal clutch is connected with the first speed changing mechanism, and the first speed changing mechanism is connected with the outer circle of the bi-directional overrun clutch. By means of utilization of an automatic speed changer which is formed by combining a principle of the centrifugal clutch, the speed changing mechanism and the principle of the bi-directional overrun clutch, the mechanical self-adaption speed changer for the electric car can prolong the service life of a battery of the electric car, improve continuation line capacity of the electric car, external energy is not needed, and namely, the battery can match with power directly which is needed when the electric car travels.

Description

technical field [0001] The invention relates to the technical field of traffic equipment, and in particular relates to a mechanical adaptive transmission of an electric vehicle and a multi-stage automatic transmission thereof. Background technique [0002] An important reason for the failure of electric vehicles to be popularized at present is that the battery's continuous driving ability is insufficient. According to related reports, the reason for the insufficient continuous driving ability of the battery is, on the one hand, the original capacity of the battery is limited, and on the other hand, it is due to the emergence of high current. Analyzing the cause of the high current, it is because high speed and heavy load often occur when driving, and the switch is usually increased, so that the frequent high current occurs and the continuous driving ability is insufficient. [0003] The existing reduction of high current can be achieved by selecting different transmission ch...

AI Technical Summary

Problems solved by technology

However, this mechanism will still affect the service life of the battery of the electric vehicle. When the electric vehicle goes uphill, the battery will still have a large current phenomenon, which will damage the service life of the battery.

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