Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

Heat management method for new energy automobile power electric source system

A new energy vehicle, power supply technology, applied in electric vehicles, circuits, electrical components, etc., can solve problems such as thermal runaway, inability to predict dynamic trends in advance, and achieve the effect of simple and effective control

Pending Publication Date: 2019-03-12
铠龙东方汽车有限公司
View PDF0 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Thermal management is one of the core functions of the battery management system. The traditional thermal management strategy is to directly use the current measured temperature as the management control condition: when the measured battery temperature is too high or too low, the power output of the battery pack is directly prohibited or limited, and it is impossible to predict in advance. Judging its dynamic trend, although it has thermal management function, it is still easy to cause thermal runaway

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 more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Heat management method for new energy automobile power electric source system
  • Heat management method for new energy automobile power electric source system
  • Heat management method for new energy automobile power electric source system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0111] image 3 It is the relationship curve between the output SOP of the battery pack and the temperature trend. When the temperature is -20°C to 20°C, the output SOP of the battery pack gradually increases with the rise of the temperature. When the temperature rises to 20°C to 35°C, the battery The group outputs full power (SOP=100%), the output power starts to drop when the temperature exceeds 35°C, and drops to 0 when the temperature is 60°C and above.

Embodiment 2

[0113] Figure 4It is a graph of the relationship between the output SOP of the battery pack and the dynamic change of temperature. It can be seen from the curve in the figure that at a temperature of 30°C or below, the SOP gradually increases until 100%. After reaching 30°C but the temperature continues to rise, the SOP begins to fluctuate. showing a downward trend. When the temperature began to drop rapidly, the SOP rose gradually, and finally after 130 minutes, the temperature and SOP fluctuated in a small range and were in a stable state as a whole.

Embodiment 3

[0115] Figure 5 It is a graph of the relationship between the temperature of the battery pack and the auxiliary thermal management components (heating and cooling components). It can be seen from the curve in the figure that at temperatures below 0°C, the heating components work at full load. After reaching 0°C, the heating power gradually decreases, while the temperature It still continues to rise but tends to be slow; when the temperature rises to 5°C, the output power of the heating component is 0, and the heating component is turned off. During this process, the heat dissipation component does not work. When the temperature rises to 30°C and is still rising, the heat dissipation component Start to start, until the cooling part starts to work at full power at 35°C, the temperature shows a downward trend after 100 minutes, and the heat dissipation power also begins to decrease, and it begins to stabilize after 112 minutes.

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

No PUM Login to View More

Abstract

The invention belongs to the technical field of the power batteries of new energy battery electric vehicles and hybrid electric vehicles, and particularly relates to a heat management method for a newenergy automobile power electric source system. The heat management method for the new energy automobile power electric source system comprises the following steps that: (1) measuring the temperatureof an electric source system; (2) analyzing temperature data; (3) carrying out fuzzification processing on the temperature data; (4) carrying out automatic control processing on the working state ofthe electric source system: outputting an output quantity and control quantity result obtained by analysis, and controlling the working state of the power electric source system; and (5) repeating theabove steps (1) to (4). The heat management method has the beneficial effects that the heat change tendency and the dynamic characteristics of the power electric source system in multiple specific time periods can be monitored in real time, temperatures and the change situations of the temperatures can be subjected to response control in advance, and the control of the heat management multidimensional input characteristics of a power battery pack is simple and effective.

Description

technical field [0001] The invention belongs to the technical field of power batteries for new energy pure electric vehicles and hybrid vehicles, and in particular relates to a thermal management method for a new energy vehicle power supply system. Background technique [0002] Power battery packs are widely used in new energy pure electric vehicles, hybrid vehicles and other fields. The on-board power battery needs to be effectively managed during use, so that the on-board power battery works in a safe and efficient state, prolonging or ensuring its cycle life, and at the same time ensuring the safety of the vehicle and personnel. driving experience. [0003] The power battery pack monitors and manages its working status in real time through the battery management system. The battery management system is one of the core electronic control systems of new energy vehicles that uses secondary batteries as one of the driving energy sources. Thermal management is one of the cor...

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
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/613H01M10/615H01M10/625H01M10/633H01M10/48B60L58/24
CPCH01M10/486H01M10/613H01M10/615H01M10/625H01M10/633Y02T10/70Y02E60/10
Inventor 漆利国沈峰张佳林季悦
Owner 铠龙东方汽车有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com