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Battery charge state dynamic following method and device

A technology of battery state of charge and following devices, which can be applied to electrical devices, electric vehicles, measuring devices, etc., and can solve problems such as jumping

Active Publication Date: 2018-10-16
ZHENGZHOU YUTONG BUS CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The present invention provides a method and device for dynamically following the state of charge of a battery, which are used to solve the problem of jumps in the prior art when adjusting the display value of the state of charge

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  • Battery charge state dynamic following method and device
  • Battery charge state dynamic following method and device
  • Battery charge state dynamic following method and device

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Embodiment Construction

[0049] The present invention provides a method and device for dynamically following the state of charge of a battery, which are used to solve the above-mentioned problem of jumps when adjusting the display value of the state of charge.

[0050] A method for dynamically following the state of charge of a battery, comprising the steps of:

[0051] (1) Obtain the historical value of the battery state of charge when the battery was shut down last time;

[0052] (2) adopt the power-on correction method to obtain the correction value of the battery state of charge when the power is turned on;

[0053] (3) Determine whether the difference between the historical value of the battery state of charge and the corrected value is greater than the set value; if it is greater, then according to the relationship between the historical value of the battery state of charge and the corrected value, and the battery is in a charging state after power on It is still in the discharge state, so that...

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Abstract

The invention provides a battery charge state dynamic following method and device. The method comprises the steps of obtaining the historical value of the charge state of a battery during the last-time shutdown; obtaining a correcting value of the charge state of the battery by adopting a start-up correcting method; determining whether the difference value between the historical value and the correction value of the charge state of the battery is larger than a set value or not; if yes, allowing the display value of the charge state of the battery gradually transit to from the historical valueto the real value obtained by accumulating a correction value in combination with an ampere-hour integral method, according to the relation between the historical value of the charge state of the battery and the magnitude of the correction value, and whether the battery is in a charging state or a discharging state after the battery is started. According to the technical scheme, due to the fact that a gradual transition process exists when the display value of the charge state of the battery is adjusted, the display value of the charge state of the battery does not jump.

Description

technical field [0001] The invention belongs to the technical field of electric vehicle battery management, and in particular relates to a method and a device for dynamically following the state of charge of a battery. Background technique [0002] With the improvement of living standards, people's demand for clothing, food, housing and transportation is also getting higher and higher, especially in terms of travel, many families use cars as a means of transportation. Traditional cars use engines to provide power, and the work of engines needs to rely on traditional energy sources. However, many traditional energy sources, such as petroleum, are non-renewable energy sources, and the use of traditional energy sources has caused great pollution to the environment. In order to reduce the loss of traditional energy and alleviate the pressure of environmental pollution, many vehicle manufacturers are developing vehicles powered by new energy. [0003] Now common new energy vehi...

Claims

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Application Information

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IPC IPC(8): G01R31/36
CPCB60L3/12G01R31/36
Inventor 游祥龙李晓菲赵宇斌张红涛
Owner ZHENGZHOU YUTONG BUS CO LTD
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