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Electric vehicle water pump type selection method and device based on water-cooled motor system

A technology for water-cooled motors and electric vehicles, applied to electric vehicles, parts of pumping devices for elastic fluids, electromechanical devices, etc., can solve the problems of high cost and low efficiency, and achieve low cost, high efficiency and low power Effect

Active Publication Date: 2022-02-11
SICHUAN YEMA AUTOMATION CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of this application is to provide an electric vehicle water pump type selection method and device based on a water-cooled motor system to effectively improve the technical defects of high cost and low efficiency in the prior art

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  • Electric vehicle water pump type selection method and device based on water-cooled motor system
  • Electric vehicle water pump type selection method and device based on water-cooled motor system
  • Electric vehicle water pump type selection method and device based on water-cooled motor system

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Embodiment Construction

[0039] The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.

[0040] It should be noted that like numerals and letters denote similar items in the following figures, therefore, once an item is defined in one figure, it does not require further definition and explanation in subsequent figures. Meanwhile, in the description of the present application, the terms "first", "second" and the like are only used to distinguish descriptions, and cannot be understood as indicating or implying relative importance.

[0041] see figure 1 , some possible embodiments of the present application provide an electronic device 10 . The electronic device 10 can be a personal computer (Personal Computer, PC), a tablet computer, a smart phone, a personal digital assistant (Personal Digital Assistant, PDA), etc., or the electronic device 10 can be a network server, a database server,...

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Abstract

The invention provides an electric vehicle water pump type selection method and device based on a water-cooled motor system, and the method comprises the following steps: S1, calculating and obtaining a first flow parameter and a first lift parameter related to a water pump based on the peak power calorific value and the total resistance of the water-cooled motor system, and carrying out first-time model selection on the water pump according to the first flow parameter and the first lift parameter; S2, collecting corresponding duty ratio data delta, stator current data I CE, motor torque data T, motor rotating speed omega and stator frequency data f1 under a preset limit working condition; s3, based on the switching loss and the conduction loss, calculating a first power heating value of the motor controller under a preset limit working condition; S4, calculating a second power heating value of the water-cooled motor under the preset limit working condition; and S5, according to the total power calorific value of the water-cooled motor system, obtaining a second flow parameter and a second lift parameter related to the water pump through calculation, and according to the second flow parameter and the second lift parameter, carrying out secondary model selection of the water pump.

Description

technical field [0001] The present application relates to the technical field of electric vehicle water-cooled motor cooling systems, and in particular, relates to a method and device for selecting electric vehicle water pumps based on water-cooled motor systems. Background technique [0002] With the development of the green economy, the penetration rate of electric vehicles in the market is rapidly increasing. There are two main layout methods for the cooling system of electric vehicles: one is an air-cooled structure, and the other is a liquid-cooled structure. At present, water-cooled motor systems are mostly used in the field of electric vehicles. Therefore, for most electric vehicles, the water pump is an indispensable component, which provides the power for the cooling cycle system of the whole vehicle to run. [0003] The type selection of the electric vehicle water pump is directly related to the calorific value of the motor system. In the existing technology, the p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04B51/00F04B53/00F04B17/03H02K9/19
CPCF04B51/00F04B53/00F04B17/03H02K9/19Y02T10/64
Inventor 杨辉罗春福
Owner SICHUAN YEMA AUTOMATION CO LTD