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Estimating method of charging time

A charging time and charging curve technology, applied in the field of battery detection, can solve the problems of charging time deviation and the influence of charging rate without considering the degree of aging of the battery, and achieve the effect of ensuring accuracy

Inactive Publication Date: 2017-11-28
江西优特汽车技术有限公司
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Problems solved by technology

For the second type, the degree of battery aging and the influence of battery charging temperature on the charging rate are not considered. In fact, these factors will introduce deviations in the calculation of charging time.

Method used

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  • Estimating method of charging time

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Embodiment Construction

[0032] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0033] figure 1 It is a flowchart of a charging time estimation method provided by an embodiment of the present invention, the method includes the following steps:

[0034] S1. Obtain charging curves under different battery aging degrees, different charging temperatures, and different initial power conditions through experiments;

[0035]In the embodiment of the present invention, the battery cycle test equipment is used to test the charging curves under different aging degrees, different charging temperatures, and different initial power conditions, and based on battery samples with different agi...

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Abstract

The invention belongs to the field of cell detection and provides an estimation method of charging time. The estimation method comprises following steps of acquiring different cell aging degrees, different charging temperatures and charging curves under different starting electric quantities in an experiment manner; averaging pints on multiple groups of charging curves under the same experiment condition, and using a charging curve corresponding to the mean as a typical charging curve; storing the typical charging curve into a terminal device, and selecting an optimal typical charging curve based on the cell aging degrees, the current charging temperature and the starting electrical quantity of the terminal device; and based on the optimal typical charging curve, acquiring charging estimation time from the starting electrical quantity to the target electrical quantity. In this way, characteristics of charging curves of the cell are considered and effects on charging processes imposed by environment factors are also considered, so accuracy of the charging estimation time is ensured.

Description

technical field [0001] The invention belongs to the field of battery detection, in particular to a charging time estimation method. Background technique [0002] Mobile devices such as digital devices such as mobile phones, new energy vehicles such as electric vehicles, and large-scale energy storage devices are powered by lithium-ion batteries. The power that the batteries can store is limited. to continue to use. [0003] In the application of electric vehicles, in order to realize the intelligent management of the charging process of electric vehicles, it is necessary to estimate the charging time of the charging target electricity. There are two main ways to obtain the traditional battery charging time. One is to calculate the required remaining charging time based on the charging time of 1% power (SOC) and the percentage from the current SOC to full power; the other is based on The battery power preset before leaving the factory refers to the information and the curre...

Claims

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Application Information

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IPC IPC(8): G01R31/36
Inventor 李世明王世强胡庆军
Owner 江西优特汽车技术有限公司
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