Method and device for obtaining internal temperature of cylindrical battery

A cylindrical battery, internal temperature technology, applied in the direction of secondary battery repair/maintenance, etc., to achieve the effect of accurate judgment, avoid use efficiency, and reduce service life

Active Publication Date: 2018-01-12
成都前锋电子股份有限公司
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  • Abstract
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Problems solved by technology

[0003] The technical problem to be solved by the embodiments of the present invention is to provide a method and device for obtaining the internal temperature of a cylindrical battery, so as to obtain the internal temperature of the battery and improve the accuracy of the acquisition, remind the driver to take corresponding measures in time, and prevent the battery from Low battery efficiency and service life caused by excessive temperature, and even vehicle safety problems caused by battery fire and explosion

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  • Method and device for obtaining internal temperature of cylindrical battery
  • Method and device for obtaining internal temperature of cylindrical battery
  • Method and device for obtaining internal temperature of cylindrical battery

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Embodiment Construction

[0052] In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following will describe in detail with reference to the drawings and specific embodiments. In the following description, specific details, such as specific configurations and components, are provided only to assist in a comprehensive understanding of the embodiments of the present invention. Accordingly, those of ordinary skill in the art should recognize 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.

[0053]It should be understood that reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic related to the embodiment is included in at least one embodiment of th...

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Abstract

The invention provides a method and a device for obtaining the internal temperature of a cylindrical battery. The method for obtaining the internal temperature of the cylindrical battery comprises thefollowing steps: obtaining a current current amplitude of the battery, a battery surface temperature corresponding to the current current amplitude, and the air temperature in a volume in an environment where the battery is located; obtaining the current resistance ratio Rin/Rout corresponding to the current current amplitude; obtaining the battery internal temperature corresponding to the current current amplitude according to the current resistance ratio Rin/Rout corresponding to the current current amplitude, the battery surface temperature corresponding to the current current amplitude and the air temperature of the volume in the environment where the battery is located. The invention enables a battery management system controller and a driver to obtain the accurate battery internal temperature, so that appropriate measures can be taken to avoid the risks of the lowering of the battery using efficiency, the reduction of the service life of the battery and the exploding of the battery due to the high temperature.

Description

technical field [0001] The invention relates to the field of electric vehicles, in particular to a method and device for obtaining the internal temperature of a cylindrical battery. Background technique [0002] At present, electric vehicles have been widely used as a means of transportation due to their environmental protection and low energy consumption. The energy source of electric vehicles is the battery, and the internal temperature of the battery is an important factor affecting the working efficiency of the battery and the service life of the battery. Patent CN201410811083.2 calculates the internal temperature of the battery through the Kalman filter algorithm according to the external temperature and the battery surface temperature, but this algorithm has high requirements on the processor and has a certain cumulative error, which does not conform to the control of the battery management system in actual engineering Due to the inconspicuous distribution of the heat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/42
CPCY02E60/10
Inventor 赵青山单继政代康伟张骞慧
Owner 成都前锋电子股份有限公司
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