Vehicle control unit applied to low-speed electric vehicle and integrating functions of battery management system

Abstract

The invention relates to the technical field of electric vehicle controllers and discloses a vehicle control unit applied to a low-speed electric vehicle and integrating functions of a battery management system. The vehicle control unit comprises an analog quantity acquisition module, a remote communication amount acquisition module, a control output module and a communication module. The analog quantity acquisition module is electrically connected with a lithium battery pack; the control output module and the communication module are electrically connected with the analog quantity acquisitionmodule and the remote communication amount acquisition module respectively; and the communication module comprises a CAN bus and an RS485 bus; the CAN bus comprises a first CAN bus and a second CAN bus, the first CAN bus is electrically connected with a vehicle-mounted charger and a program upgrading interface, the second CAN bus is electrically connected with a motor controller and a combined instrument panel, and the RS485 bus is electrically connected with a super terminal. According to the technical scheme, the functions of the battery management system can be integrated into the vehiclecontrol unit, the number of controllers is reduced, whole vehicle wiring harnesses are simplified, a development period is shortened, cost is reduced, and high application and popularization value isachieved.

Description

technical field [0001] The invention relates to the technical field of electric vehicle controllers, in particular to a vehicle controller applied to the integrated battery management system function of low-speed electric vehicles. Background technique [0002] Since the "subsidy cheating" incident in the field of new energy vehicles in 2016, the subsidy quota for new energy vehicles has been "declining" year by year, especially the new subsidy policy that has been implemented since June 25, 2019, showing that the subsidy is on a cliff The decline was as high as 50%, which was the highest in history. On the contrary, low-speed electric vehicles, because they are not within the scope of new energy vehicle subsidy policy support, do not enjoy subsidies, and are completely dominated by the market, so they are not affected by national subsidy policies. On the contrary, their production and sales have maintained a rapid growth rate in recent years. trend. [0003] Low-speed ele...

AI Technical Summary

Problems solved by technology

[0007] The main purpose of the present invention is to propose a vehicle controller that is applied to the integrated battery management system function of low-speed electric vehicles, aiming to solve the problem that although the existing vehicle controllers of new energy electric vehicles integrate the hardware or software of the BCU In the VCU, but the BMU is not integrated, the integration level is still not high enough, not thorough enough, and it is not optimized and integrated for low-speed electric vehicles, which has a relatively large technical problem

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