Electric vehicle battery management system capable of carrying out automatic correction along with use temperature and humidity
A battery management system and automatic calibration technology, applied in thermometers, thermometer applications, radiation pyrometry, etc., can solve problems such as slow temperature changes, long working hours of temperature sensors, and decreased sensitivity of temperature sensors to improve stability and longevity effects
Active Publication Date: 2019-04-02
JIANGXI DIBIKE
View PDF5 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
In the prior art, the temperature sensor is usually used in the calibration process to collect the temperature of the battery management system and the surrounding temperature. However, the temperature sensor is instantaneous, and the temperature propagation has a certain delay, especially when the car is in some working conditions (such as just starting, long-term low gear and slow speed, etc.), the temperature of the fuel auxiliary drive unit may change slowly due to slow conduction, so that the temperature acquisition process of the fuel auxiliary drive unit needs to be continuously corrected by the ambient temperature, which makes the temperature sensor in The working time at the approximate temperature is longer, which will easily cause the sensitivity of the temperature sensor to decrease
In addition, the heat exchange between the temperature of the environment where the car, engine and battery are located and the temperature of the engine and battery takes a certain amount of time, and the temperature value detected by the temperature sensor, even after being corrected for the ambient temperature, is difficult to be compared with the battery management system. How to control the battery working state such as charging or discharging to establish an accurate and fast model
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0044] Such as figure 1 As shown, according to a preferred embodiment of the present invention, a battery management system for electric vehicles with automatic temperature and humidity correction is provided, including:
[0045] The detection parameter set acquisition module is used to collect the detection parameter sets of N distributed batteries at the time t1, t2, t3, t4, t5, t6, t7 and t8 respectively through the temperature sensor, and each set corresponds to the set battery location, and each set includes: temperature T1 of the fuel-assisted drive unit 燃料 , battery temperature T1 电 and ambient humidity W 环 , ambient temperature T1 环 , where N is an integer greater than 5;
[0046] The system also includes:
[0047] The infrared picture acquisition module is used to take photos by infrared detectors and output the temperature T2 of the fuel-assisted driving unit of N distributed batteries during the period from time t1 to time t8 燃料 , battery temperature T2 电 The...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
In order to more favorably control the battery temperature of a hybrid electric vehicle, the invention provides an electric vehicle battery management system capable of carrying out automatic correction along with use temperature and humidity from the perspective of infrared temperature detection. The system overcomes the problems in the prior art that a fuel auxiliary driving unit does not have an instantaneous reference value for an electric power auxiliary driving unit since the batteries of the hybrid electric vehicle are distributed and are especially distributed on a four-wheel driving hybrid electric vehicle. Through the numeralization processing of an infrared image, the correction parameters of a correction battery management system for battery control are obtained, battery working stability is improved, and the service life of the battery is prolonged.
Description
technical field [0001] The invention belongs to the technical field of automobile battery control, and in particular relates to an electric automobile battery management system which automatically corrects temperature and humidity according to use. Background technique [0002] At present, most of the battery management systems of electric vehicles are configured in the front or rear of the vehicle in a centralized structure. However, with the development of electric vehicles, people are increasingly aware of the advantages of hybrid vehicles in terms of energy saving and driving convenience compared with electric vehicles. For the driving system of the hybrid electric vehicle widely used at present, it is provided with a fuel-assisted driving unit (usually a gasoline engine or a diesel engine) and an electric-assisted driving unit (usually a storage battery), and the two cooperate to work together. Realize the driving of hybrid electric vehicles. [0003] When a hybrid ve...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): G01J5/00G01K13/00
CPCG01J5/0096G01K13/00G01J2005/0077G01J5/80
Inventor 刘文平
Owner JIANGXI DIBIKE