Method for calculating discharge curve of mixture of two-phase reacting material and single-phase reacting material

A single-phase reaction and discharge curve technology, applied in the measurement of electricity, measurement of electrical variables, measurement devices, etc., can solve the problem of lack of two-phase reaction materials and single-phase reaction materials mixed discharge curve calculation method, etc., to maintain the authenticity of the data and completeness, reducing the cumulative error, and avoiding the effect of excessive order

Active Publication Date: 2014-05-14
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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Problems solved by technology

[0004] In view of this, the present application provides a method for calculating the discharge curve of a mixture of two-phase reaction materials and single-phase reaction materials, which is used to solve the problem of lack of a calculation method for the discharge curve of the mixture of two-phase reaction materials and single-phase reaction materials in the prior art. question

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  • Method for calculating discharge curve of mixture of two-phase reacting material and single-phase reacting material
  • Method for calculating discharge curve of mixture of two-phase reacting material and single-phase reacting material
  • Method for calculating discharge curve of mixture of two-phase reacting material and single-phase reacting material

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[0029] The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are only some of the embodiments of the application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0030] First, at the beginning of this application, we introduce the concepts of two-phase reactive materials and single-phase reactive materials:

[0031] The two-phase reaction material refers to the material that contains two phases participating in the reaction process in the process of lithium intercalation and deintercalation; the single-phase reaction material refers to the material that contains a single phase in the process of lithium intercalation and deintercalation.

[0...

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Abstract

The invention discloses a method for calculating a discharge curve of mixture of a two-phase reacting material and a single-phase reacting material. The method comprises the steps that firstly, the two-phase reacting material and the single-phase reacting material are selected to respectively serve as positive electrode materials to prepare effective batteries and voltage-specific capacity data of the two batteries are collected respectively; secondly, the data are processed in a certain mode to obtain a set of new voltage-specific capacity data; finally, an appropriate matching method is selected to match the obtained data so that the mixed discharge curve can be obtained. The calculating method is quite suitable for discharge curve simulation after the two-phase reacting material and the single-phase reacting material are mixed, so that the problem that an existing calculating method is not suitable for calculating the discharge curve after the two-phase reacting material and the single-phase reacting material are mixed.

Description

technical field [0001] The present application relates to the technical field of lithium-ion batteries, and more specifically, relates to a method for calculating a discharge curve of a mixture of a two-phase reaction material and a single-phase reaction material. Background technique [0002] Cathode materials play a key role in the performance of lithium-ion batteries, and the selection of different materials will greatly affect the quality of the battery. With the successful application of lithium iron phosphate as a positive electrode material, another important material in the olivine structure phosphate family—lithium manganese phosphate (LiMnPO 4 ) have also received increasing attention. Its raw materials are cheaper than lithium iron phosphate, its voltage platform is higher than that of lithium iron phosphate, and its theoretical energy density is about 20% higher than that of lithium iron phosphate. However, it was found through experiments that the lithium-ion ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/36
Inventor 韩琪张一鸣刘兆平袁国霞夏永高
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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