A driving circuit with electronic differential function and its application

Abstract

The invention discloses a driving circuit with an electronic differential function and application of the driving circuit. The driving circuit comprises an upper-end control bridge circuit and a lower-end control bridge circuit. A base electrode of a first triode of the upper-end control bridge circuit is connected with a master control chip by a first resistor, an emitting electrode of the first triode is connected with an external chip by a tenth resistor, and a collecting electrode of the first triode is connected with a second diode by a second resistor; a base electrode of a second triode is directly connected with the collecting electrode of the first triode, and an emitting electrode of the second triode is respectively directly connected with a second capacitor, a negative electrode of the second diode and the second resistor. The driving circuit with the electronic differential function can be applied to a motor controller, and both the driving circuit with the electronic differential function and a control signal output interface circuit of a motor are connected with the motor. The driving circuit and the application have the advantages that the motor controller has electronic differential and electric quantity evaluating functions, accordingly, the reliability and the efficiency of a system can be improved, and the production cost of equipment can be reduced.

Description

technical field [0001] The invention relates to a drive circuit, in particular to a drive circuit with electronic differential function and its application. The drive circuit is mainly used in electric vehicle motor control systems, especially in electric vehicle motor control systems with electronic differential and power evaluation functions. Background technique [0002] In recent years, the global energy crisis has begun to intensify, and traditional petrochemical energy sources are becoming increasingly exhausted. The environmental problems caused by this, such as air pollution, global temperature rise, and urban dust pollution, are becoming more and more harmful. After the 21st century, governments of various countries and major automobile manufacturers have reached a consensus that energy saving and emission reduction will be the main direction of future automobile technology development. The new energy vehicle has attracted widespread attention from all over the wor...

AI Technical Summary

Problems solved by technology

[0005] (1) In the process of running the electric vehicle, the speed difference caused by the inconsistency of the stroke and speed between the wheels of the electric vehicle due to the steering condition, and the controller is required to provide an electronic differential mechanism to ensure Normal and safe driving of the vehicle

[0006] (2) Evaluate the state of charge of the battery pack based on the total voltage of the battery pack, which basically meets the requirements of lead-acid batteries; the correlation between the state of charge of lithium-ion batteries and its total voltage is far lower than that of lead-acid batteries, and the total voltage of the battery pack It cannot be used as the basis for evaluating the state of charge of lithium-ion battery packs, and the existing system only meets the evaluation of the state of charge of lead-acid battery packs, and does not have the function of real-time online measurement and evaluation of the state of charge of lithium-ion battery packs

[0007] (3) Lack of automatic low-battery warning and operation management mechanism that automatically limits the output of the motor, which may easily cause the vehicle to break down in the middle of operation, and forced protection will lead to power output restrictions and other events that affect driving safety.

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