Unlock instant, AI-driven research and patent intelligence for your innovation.

Power battery thermal diffusion simulation method based on electrothermal coupling

A technology of power battery and simulation method, applied in the direction of design optimization/simulation, calculation, computer-aided design, etc., to reduce the harm of thermal diffusion, improve simulation accuracy, and reduce heat generation power

Pending Publication Date: 2022-07-15
CATARC TIANJIN AUTOMOTIVE ENG RES INST CO LTD +1
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of this, the present invention aims to propose a power battery thermal diffusion simulation method based on electrothermal coupling to solve the problem of simultaneous analysis of power battery thermal runaway and thermal diffusion process. The problem of electrothermal coupling in the process of battery thermal diffusion

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
  • Power battery thermal diffusion simulation method based on electrothermal coupling
  • Power battery thermal diffusion simulation method based on electrothermal coupling
  • Power battery thermal diffusion simulation method based on electrothermal coupling

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment

[0065] figure 2 is a schematic diagram of the equivalent circuit of the power battery small module, image 3 It is a schematic diagram of the power battery small module. figure 2 In the middle, V1-V4 represent 4 DC voltage sources, representing image 3 The voltage of the 4 cells in the middle; figure 2 In the middle, R1, R2, R3, and R4 represent 4 resistors, representing image 3 The internal resistance of the 4 cells in the middle; figure 2 The resistors R5 and R8 represent image 3 The resistance of the first group of connected pole pieces; figure 2 The resistors R6 and R9 represent image 3 The resistance of the second group of connected pole pieces; figure 2 The resistors R7 and R10 represent image 3 The third group connects the resistance of the pole piece.

[0066] When 4 cells are connected in parallel, the potentials are equal everywhere, and no discharge will occur in the module. when image 3 When the heating element in the battery starts to heat t...

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 power battery thermal diffusion simulation method based on electrothermal coupling, which is used for simulating a working process of a discharge behavior in a thermal diffusion process of a power battery system and mainly comprises the following steps of: establishing an equivalent circuit model of the power battery system; establishing a power battery system heat transfer model; establishing a thermal runaway diffusion model of the power battery system; and respectively coupling the equivalent circuit model with the thermal runaway diffusion model and the heat generation model. According to the power battery thermal diffusion simulation method based on electrothermal coupling, the discharge behavior and the reaction heat generation behavior in the thermal runaway process of the power battery can be analyzed at the same time, electrothermal coupling in the thermal runaway process of the battery is achieved, the simulation precision of a battery thermal diffusion model is greatly improved, and the simulation accuracy of the battery thermal diffusion model is improved. And safety optimization is performed on the power battery system based on the simulation result, so that the safety of the new energy automobile is improved.

Description

technical field [0001] The invention belongs to the field of new energy vehicle safety, in particular to a power battery thermal diffusion simulation method based on electrothermal coupling. Background technique [0002] Lithium-ion batteries have the characteristics of high energy density, low self-discharge rate and long life, so they are widely used as the power source of new energy vehicles. Lithium-ion batteries are inherently unstable, so power batteries are prone to thermal runaway under abuse conditions, resulting in thermal diffusion of battery packs, resulting in new energy vehicles catching fire and burning. In order to improve the safety of new energy vehicles, major research institutions have carried out in-depth research on thermal runaway and thermal diffusion of power batteries. At present, most of the research on battery thermal runaway, especially thermal diffusion, is based on the electrical energy released by the short circuit in the battery and the ener...

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): G06F30/20G06F119/08
CPCG06F30/20G06F2119/08
Inventor 邝男男栗国赵光磊郝剑虹崔东孟宪明胡帛涛季中豪尤楠曹欢
Owner CATARC TIANJIN AUTOMOTIVE ENG RES INST CO LTD
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com