Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method and system for heat management of power battery

A power battery and thermal management technology, applied in secondary batteries, circuits, electrical components, etc., can solve the problems of short service life and poor energy-saving effect of power batteries, and achieve the effects of fast cooling response, simple algorithm, and improved fault tolerance.

Active Publication Date: 2018-08-07
WM SMART MOBILITY (SHANGHAI) CO LTD
View PDF7 Cites 30 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is that the battery cooling method in the prior art has poor power battery energy saving effect and short service life, and further provides a power battery thermal management method and system

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
  • Method and system for heat management of power battery
  • Method and system for heat management of power battery
  • Method and system for heat management of power battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] This embodiment provides a power battery thermal management method, which can be applied to a battery thermal management system, such as figure 1 As shown, it includes the following steps:

[0027] S101: Obtain the temperature t of each battery cell in the power battery n , where n is an integer and 1<n≤N, N is the total number of battery cells in the power battery; the power battery includes N battery cells, and the temperature of the battery cells can be obtained through the temperature detection hardware structure inside the battery pack In this step, the detection result of the temperature detection hardware structure can be obtained directly.

[0028] S102: Obtain the average temperature T of the battery cells in the power battery 1 And the maximum temperature difference T of the monomer 2 , where T 2 =Max(|t n -T 1 |); the average temperature T of the battery cell in the power battery 1 It can be calculated directly by using the calculation method of the av...

Embodiment 2

[0032] This embodiment provides a power battery thermal management method, which can be applied to a battery thermal management system, such as figure 2 As shown, it includes the following steps:

[0033] S201: Obtain the temperature t of each battery cell in the power battery n , where n is an integer and 1<n≤N, N is the total number of battery cells in the power battery.

[0034] S202: Obtain the average temperature T of the battery cells in the power battery 1 And the maximum temperature difference T of the monomer 2 , where T 2 =Max(|t n -T 1 |).

[0035] S203: Determine the average temperature T 1 Whether it is lower than the temperature upper limit threshold, if so, execute step S204; otherwise, execute step S218.

[0036] S204: Determine the maximum temperature difference T of the monomer 2 Whether it is greater than the upper threshold of body temperature difference, if so, perform step S205, otherwise, perform step S206 and / or S210, and the steps S206 and S2...

Embodiment 3

[0065] This embodiment provides a computer-readable storage medium, in which instruction information is stored, and the computer can execute the power battery thermal management method described in any solution in Embodiment 1 or 2 after reading the instruction information.

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 provides a method and system for heat management of a power battery. The method comprises the following steps: obtaining temperature tn of each battery cell in the power battery, whereinn is an integer and greater than 1 but less than or equal to N, and N is a total number of battery cells in the power battery; obtaining average temperature T1 of the battery cells in the power battery and a maximum temperature difference T2 of the cells, wherein T2 is equal to Max (Itn-T1I). If the average temperature T1 is less than an upper threshold value of temperature and a maximum temperature difference T2 of the cells is greater than the upper threshold value of the temperature difference of the cells, a cooling component is controlled to run at a first speed to remove the temperaturedifference between different battery cells, the first speed is greater than a speed threshold value, wherein the speed threshold value can be selected to be 50% or above of a nominal speed accordingto actual situation, and the required cooling time is shorter if the first speed is higher. Namely, when the temperature difference between various battery cells is relatively great, the various battery cells enter an imbalanced cooling mode firstly to guarantee that the temperature of the various battery cells reach an identical state, so that the output power of the power battery can be improvedmaximally and the service life of the power battery is prolonged.

Description

technical field [0001] The invention relates to the technical field of battery heat management in new energy vehicles, in particular to a power battery heat management method and system. Background technique [0002] Electric vehicles use power batteries as the energy source for the operation of the whole vehicle, which has the remarkable characteristics of energy saving and intelligence. As we all know, the temperature of the power battery will rise during the process of providing electric energy. If the temperature of the power battery is too high, it will affect its normal use, and in severe cases, it may also affect driving safety. [0003] At present, the existing thermal management cooling system for power battery temperature regulation mainly relies on the current temperature value of the power battery as a whole and the ideal temperature value at which the power battery can work in the best state to determine whether the power battery needs to be cooled. If the diff...

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
IPC IPC(8): H01M10/613H01M10/617H01M10/625H01M10/633
CPCH01M10/613H01M10/617H01M10/625H01M10/633Y02E60/10
Inventor 尹育隆李明阳刘志鹏罗石
Owner WM SMART MOBILITY (SHANGHAI) CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap 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