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A multifunctional electric tractor test bench based on CAN communication and its test method

A CAN communication and test bench technology, applied in the field of multi-functional electric tractor test benches, can solve the problem that the electric vehicle test bench cannot be directly transplanted

Active Publication Date: 2020-01-14
HENAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the different requirements of electric tractors and electric vehicles, it is impossible to directly transplant electric vehicle test bench technology

Method used

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  • A multifunctional electric tractor test bench based on CAN communication and its test method
  • A multifunctional electric tractor test bench based on CAN communication and its test method
  • A multifunctional electric tractor test bench based on CAN communication and its test method

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Embodiment Construction

[0037] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0038] CAN stands for Controller Area Network. CAN was originally designed by Germany's BOSCH company for vehicle monitoring and control systems. It has been widely used in communication systems in the machinery industry.

[0039] Compared with the general communication bus, the data communication of CAN bus has outstanding reliability, real-time and flexibility. The CAN bus is transmitted in the form of messages, which has high efficiency and reliability, and can realize real-time communication between various network nodes. CAN bus communication adopts a non-destructive bit arbitration bus mechanism mechanism. When two nodes transmit information to the network at the same time, the node with low priority stops sending data actively, while the node with high priority can continue to transmit data without being affected.

[0040] The...

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Abstract

The invention discloses a multi-function electric tractor test bench based on CAN communication and a test method. The test bench comprises a power supply module, a power module, a driving module anda control system. The power module comprises a storage battery group, a charging system, a charging system controller, a voltage sensor, a battery simulator, a temperature sensor, a hall current sensor, and a charge accumulation SOC estimation module. The charging system is connected to the storage battery group. The voltage sensor is connected to the charging end and the discharging end of the storage battery group. The temperature sensor and the hall current sensor are connected to the discharging end of the storage battery group. The outer end of the battery simulator is connected to a three-phase power grid. The inner end of the battery simulator is connected to the storage battery group. The hall current sensor is connected to the charge accumulation SOC estimation module. The charging system controller is connected to the charge accumulation SOC estimation module. In the invention, through a battery simulator condition programmable function, the simulation of the discharge load of the storage battery group is realized, there is no transmission power loss, and the discharging characteristic of the storage battery group is accurately tested.

Description

technical field [0001] The invention relates to the technical field of agricultural machinery, in particular to a CAN communication-based multifunctional electric tractor test bench and a test method thereof. Background technique [0002] Energy saving and environmental protection have gradually become issues that the world needs to face together. In order to deal with the current increasingly serious environmental pollution problems and the shortage of non-renewable petroleum resources in China, on the one hand, the vehicle emission standards are becoming more and more stringent control standards, from the strict control of National IV to the current National V emission standards; on the other hand On the one hand, vigorously increase the research and development of key technologies for electric vehicles. [0003] Tractor is the main power vehicle in modern agricultural production, which can realize agricultural tasks such as plowing, rotary tillage, plant protection, and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/396G01R31/367G01R31/388G01R31/00G01M17/007G05B19/042
CPCG01M17/0074G01R31/007G01R31/367G01R31/374G01R31/392G01R31/396G05B19/042G05B19/0421G05B2219/2231G05B2219/25032G05B2219/25171G05B2219/25252
Inventor 徐立友赵学平刘孟楠王通闫祥海李忠利董兴凯徐海龙
Owner HENAN UNIV OF SCI & TECH
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