General coded electric automobile shifting controller

Abstract

The invention relates to a general coded electric automobile shifting controller, which consists of a main chip and relevant input and output circuits, wherein the output circuit consists of four groups of H bridge type output ports; each group of output ports is provided with two output wiring ends; the voltage polarities of the two wiring ends of each group of output ports can be exchanged according to a software command; and after a shifting command is received, a group of 8-bit binary coded data preset by using software is output by using U1, and four external magnetic latching relays or eight normal electromagnetic relays are driven to work in different switch-on/off states by using the output circuit, so that control over the connecting way of each winding of a power motor of an electric automobile, i.e., different speed gears, is realized. Due to the adoption of the controller which is used together with software, shifting signals of a dozens of combination ways can be output, two stepping motors can be driven simultaneously to realize mechanical shifting, and the shifting requirement of any form can be better met by changing output codes in programs.

Description

[0001] The technical field [0002] The invention relates to the field of electric vehicle control, in particular to a universal coded shift controller for electric vehicles. technical background [0003] With the development of new energy and environment-friendly vehicles all over the world, the motor as the core of new energy and environment-friendly vehicles has become the main goal of technology research and development, so new varieties of multi-speed motors are constantly coming out, which makes the inherently inconsistent shift control of electric vehicles The way and the components that realize the control become more messy. There are many ways to change the gear of electric vehicles at present, such as changing the star / delta connection conversion of the motor winding, controlling the connection between multiple taps of the motor winding and the power supply, and changing the motor power supply. Voltage, changing the combination form of windings, changing the strength...

AI Technical Summary

Problems solved by technology

[0003] With the development of new energy and environment-friendly vehicles all over the world, the motor as the core of new energy and environment-friendly vehicles has become the main goal of technology research and development, so new varieties of multi-speed motors are constantly coming out, which makes the inherently inconsistent shift control of electric vehicles The way and the components that realize the control become more messy. There are many ways to change the gear of electric vehicles at present, such as changing the star / delta connection conversion of the motor winding, controlling the connection between multiple taps of the motor winding and the power supply, and changing the motor power supply. Voltage, changing the combination form of windings, changing the strength of the excitation magnetic field, changing gears by mechanical means, etc., the gear shifting devices are different. For some reason, if you want to replace the original motor of the electric vehicle with another brand motor, Then the electronic transmission device of the motor must be replaced at the same time, which not only causes waste of time and money, but also is not conducive to energy saving and environmental protection.

Moreover, the various shifting devices currently available do not have the function of driving the magnetic latching relay, that is, the function of exchanging the voltage polarity of the output port, nor do they have the multi-gear automatic shift control function that takes into account the mechanical gearbox.

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