Method for determining thermal runaway boundary condition of lithium ion battery and detection system

A lithium-ion battery and boundary condition technology, which is used in secondary battery testing, measurement of electricity, electrical components, etc., can solve problems such as boundary conditions that cannot be determined for thermal runaway of lithium-ion batteries, and achieve the effect of reducing safety accidents.

Active Publication Date: 2021-10-12
BEIJING ELECTRIC VEHICLE
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[0004] The embodiment of the present invention provides a method and detection system for measuring the thermal runaway boundary conditions of

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  • Method for determining thermal runaway boundary condition of lithium ion battery and detection system
  • Method for determining thermal runaway boundary condition of lithium ion battery and detection system
  • Method for determining thermal runaway boundary condition of lithium ion battery and detection system

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[0048] In order to make the technical problems, technical solutions and advantages to be solved by the present invention more clear, the following will be described in detail with reference to the accompanying drawings and specific embodiments. In the following description, specific details such as specific configurations and components are provided merely to assist in a comprehensive understanding of embodiments of the present invention. Accordingly, it should be apparent to those skilled in the art that various changes and modifications of the embodiments described herein can be made without departing from the scope and spirit of the invention. Also, descriptions of well-known functions and constructions are omitted for clarity and conciseness.

[0049] It is to be understood that reference throughout the specification to "one embodiment" or "an embodiment" means that a particular feature, structure or characteristic associated with the embodiment is included in at least one...

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Abstract

The invention provides a method for determining thermal runaway boundary conditions of a lithium ion battery and a detection system, and relates to the field of battery detection. The method comprises the following steps: charging a lithium ion battery to be tested; performing a thermal runaway experiment on the charged lithium ion battery, and monitoring the temperature and voltage of the lithium ion battery in the thermal runaway experiment process; and determining boundary conditions of thermal runaway of the lithium ion battery according to the monitored temperature and voltage. According to the method for measuring the thermal runaway boundary conditions of the lithium ion battery, several boundary conditions in the thermal runaway process of the lithium ion power battery can be rapidly detected, parameters such as voltage and temperature are also covered, and powerful data support is provided for management and control of a lithium ion battery system.

Description

technical field [0001] The invention relates to the field of battery detection, in particular to a method and a detection system for measuring thermal runaway boundary conditions of lithium-ion batteries. Background technique [0002] The R&D and application of new energy has become an important industry in the world to alleviate the pressure on the environment and energy. As an important industry in the field of new energy, lithium-ion batteries are developing rapidly in consumer applications, new energy vehicles, and energy storage. , In order to meet the needs of battery life in various fields, the energy density of lithium-ion batteries continues to increase, and the safety risks that come with it have also increased, and safety accidents of lithium-ion batteries have emerged one after another. [0003] Thermal runaway due to internal short circuit is the main safety problem of lithium-ion batteries. Other safety problems may be controlled by electrochemical or mechanica...

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Application Information

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IPC IPC(8): H01M10/42H01M10/48G01R31/385
CPCH01M10/4285H01M10/486G01R31/385Y02E60/10
Inventor 杨慧敏代康伟盛军赖兴强张鹏
Owner BEIJING ELECTRIC VEHICLE
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