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Method and device for detecting states of batteries and battery pack

一种状态检测、电池组的技术，应用在测量装置、二次电池测试、电池组零部件等方向，能够解决误差大等问题，达到消除累积误差、测量准确度高、解决参数提取困难的效果

Active Publication Date: 2016-08-24
NANJING SILERGY SEMICON TECH CO LTD
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Taking the state of charge of the battery (also known as the percentage of remaining power, State of Charge, SOC) as an example, some existing technologies use the battery terminal voltage partition method, which gives the corresponding battery state of charge according to the interval of the battery terminal voltage , the advantage of this scheme is that the structure is simple, but it can only roughly display the general situation of the battery power, and the error is very large when the battery charging or discharging current is large

Method used

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  • Method and device for detecting states of batteries and battery pack
  • Method and device for detecting states of batteries and battery pack
  • Method and device for detecting states of batteries and battery pack

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Embodiment Construction

[0039] The present invention is described below based on examples, but the present invention is not limited to these examples only. In the following detailed description of the invention, some specific details are described in detail. The present invention can be fully understood by those skilled in the art without the description of these detailed parts. Well-known methods, procedures, procedures, components and circuits have not been described in detail in order to avoid obscuring the essence of the present invention.

[0040] Furthermore, those of ordinary skill in the art will appreciate that the drawings provided herein are for illustrative purposes and are not necessarily drawn to scale.

[0041] Meanwhile, it should be understood that in the following description, "circuit" refers to a conductive loop formed by at least one element or sub-circuit through electrical connection or electromagnetic connection. When an element or circuit is referred to as being "connected"...

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Abstract

The invention discloses a method and a device for detecting the states of batteries and a battery pack. The first charge state and the second charge state of the batteries can be obtained respectively through an electric charge quantity calculation method and a method based on a battery model, by using the characteristics that the measurement accuracy is high during large-current charging and discharging in the electric charge quantity calculation method and the accuracy is higher during small-current charging and discharging in the method based on the battery model, the weighted charge state indicating actual battery charge state more accurately can be obtained by carrying out weighting calculation on the first charge state and the second charge state. According to the method and the device disclosed by the invention, the problem that the parameter extraction is difficult in a traditional model method is solved, the influence of a coulombmeter method on accumulated error is solved at the same time, and the advantages of the model method and the coulombmeter method are merged.

Description

technical field [0001] The invention relates to power management technology, and specifically designs a state detection method and device for a battery and a battery pack. Background technique [0002] Detecting battery status is critical for power management of portable terminals or outdoor equipment. Taking the state of charge of the battery (also known as the percentage of remaining power, State of Charge, SOC) as an example, some existing technologies use the battery terminal voltage partition method, which gives the corresponding battery state of charge according to the interval where the terminal voltage of the battery is located. , the advantage of this solution is that the structure is simple, but it can only roughly display the general situation of the battery power, and the error is very large when the battery charging or discharging current is large. Therefore, there is an urgent need for a method and device for measuring the state of a battery or a battery pack ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/36
CPCG01R31/387G01R31/388H01M10/48G01R31/3832G01R31/3842G01R31/367H01M10/4285Y02E60/10G01R31/364G01R19/0069H01M10/446
Inventor 黄晓冬王兆丰
Owner NANJING SILERGY SEMICON TECH CO LTD
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