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Design method of power battery system with heat insulation device based on brittleness theory of complex system

A complex system, power battery technology, applied in the direction of batteries, secondary batteries, battery pack components, etc., can solve problems such as loss, collapse, loss, mutation of BMS functions, etc., to reduce stability, optimize mutual influence factors, improve safety effect

Active Publication Date: 2016-12-07
WENZHOU UNIVERSITY
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Problems solved by technology

As the number of BMS subunits continues to increase and their interrelationships and interactions become increasingly complex, coupled with the increasing requirements and uncertainties of the external environment, the loss of a certain subunit or a certain functional module or feature of the BMS, Mutations, etc. may cause the loss of the entire BMS function or a sudden collapse, which is a fatal hazard to the system itself and the associated environment

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  • Design method of power battery system with heat insulation device based on brittleness theory of complex system
  • Design method of power battery system with heat insulation device based on brittleness theory of complex system
  • Design method of power battery system with heat insulation device based on brittleness theory of complex system

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Embodiment Construction

[0047] The present invention will be further described in detail below in conjunction with the accompanying drawings, so that those skilled in the art can implement it with reference to the description.

[0048] The brittleness generating part of the complex system is called the brittleness source, that is, the collapse of the brittleness source part triggers the collapse of other parts. According to the degree of importance, brittleness sources can be divided into primary brittleness sources and secondary brittleness sources. Parts that are subject to crashes of other subunits are called brittle receivers. Fragile receivers and brittle sources are not uniquely corresponding. The brittle source, brittle receiver and brittle connection can form an open complex system, and the entropy is used as the basic physical quantity to measure the order degree of each subunit in this basic unit to analyze the brittleness of the power battery system.

[0049] The advantage of the distrib...

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Abstract

The invention provides a design method of a power battery system with a heat insulation device based on a brittleness theory of a complex system. The method comprises the following steps of (1) building an analysis model of a complex battery management system according to framework characteristics of the battery management system; (2) building the analysis model of a brittleness system of the complex battery management system according to the interaction relationship among various sub-units of the battery management system; (3) analyzing an entropy change rule and the brittleness stability of the built complex brittle battery management system; and (4) rebuilding interaction factors among the sub-units according to entropy change rule and brittleness collapse influence factors of the obtained complex brittle battery management system, reducing the collapse probability of the power battery system and automatically restoring the power battery system into a stable state when the brittleness influence factors are generated. The brittleness theory of the complex system is introduced into the design of the power battery system, so that the influence of sub-unit collapse on the overall power battery system is controlled to the minimum degree.

Description

technical field [0001] The invention belongs to the technical field of power battery safety control for electric vehicles, and in particular relates to a design method for a power battery system with a heat insulation device based on the theory of brittleness of complex systems. Background technique [0002] At present, due to the limitation of power battery materials, the environmental adaptability and safety performance of the power battery cannot meet the requirements of the vehicle under harsh conditions. Therefore, it is necessary to design an efficient power battery management system (BMS) to achieve effective power battery management. manage. With the rapid development of electric vehicles, the functions and requirements of BMS are increasing, and the system design of BMS is also more and more characterized by complex functions and diversified control logic. As the number of BMS subunits continues to increase and their interrelationships and interactions become incre...

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Application Information

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IPC IPC(8): H01M10/42H01M2/10H01M10/625H01M10/633H01M10/658
CPCH01M10/4207H01M2200/00H01M2200/103H01M2220/20H01M10/625H01M10/633H01M10/658H01M50/24Y02E60/10
Inventor 周斯加符兴锋施陈威李峰平周勇
Owner WENZHOU UNIVERSITY
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