High-precision battery pack charging remaining time estimation method and system

A charging time and battery pack technology, applied in the electrical field, can solve problems such as large battery differences, capacity, internal resistance differences, and long remaining charging time, and achieve the effect of optimizing the estimation method and improving accuracy

Inactive Publication Date: 2020-03-24
BEIHANG UNIV
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Problems solved by technology

However, there is currently no specific and reliable method to estimate the remaining charging time of the device to be charged. It can only be roughly estimated by dividing the remaining charging power by the charging current.
Using this rough estimation method can get closer to the charging time under ideal conditions, but in the actual charging process, as the battery itself heats up, the charging current will decrease accordingly, resulting in multiple calculations of the remaining charging time It will not decrease linearly with the incr...

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  • High-precision battery pack charging remaining time estimation method and system
  • High-precision battery pack charging remaining time estimation method and system
  • High-precision battery pack charging remaining time estimation method and system

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Embodiment Construction

[0038] In order to understand the content of the present invention more clearly, it will be described in detail with reference to the drawings and embodiments.

[0039]The present invention aims at dividing the charging process into multiple sections in most of the current battery charging processes, and improves the design corresponding to different constant current and constant voltage conditions in the charging process. Before the calculation, a heat generation model and a heat dissipation model are established for the heat generation and heat dissipation characteristics of the different batteries used to obtain the final battery thermal model.

[0040] For different constant current and constant voltage charging stages, improve the currently widely used charging current method based on the current battery temperature and remaining capacity (SOC) table lookup, and use the battery thermal model to predict the battery temperature rise during the charging process to cope with b...

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Abstract

The invention relates to a high-precision battery pack charging remaining time estimation method and system. The charging process of the battery pack is subjected to staged processing, the temperaturethreshold value is set, the temperature in the battery charging process is predicted in combination with the battery pack thermal model, the remaining charging time is accurately estimated for different constant-current constant-voltage charging stages, and the prediction accuracy of the charging time of the battery pack is improved.

Description

technical field [0001] The invention relates to the field of electrical technology, in particular to a method and system for estimating the remaining charging time of a high-precision battery pack. Background technique [0002] With the continuous development of battery technology, rechargeable batteries are being used more and more widely. Whether it is mobile phones, wearable devices or automobiles, rechargeable batteries are widely used in large quantities. While rechargeable batteries bring great convenience to life, they also inevitably bring about the necessary operation of charging the batteries. During the charging process, the most important thing that affects the user experience is the charging time. Naturally, users hope to be able to accurately know the remaining charging time of the device so that they can arrange it calmly. However, at present, there is no specific and reliable method to estimate the remaining charging time of the device to be charged, and it ...

Claims

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Application Information

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IPC IPC(8): G06F30/20H01M10/44G06F119/08
CPCH01M10/448Y02E60/10
Inventor 杨世春陈宇航闫啸宇张军兵冯松华旸
Owner BEIHANG UNIV
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