State detection method and device for battery and battery pack

A battery status and detection method technology, applied in the direction of measuring devices, measuring electricity, measuring electrical variables, etc., can solve the problem of large errors and achieve the effect of improving accuracy

Active Publication Date: 2019-12-10
NANJING SILERGY SEMICON TECH CO LTD
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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

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  • State detection method and device for battery and battery pack
  • State detection method and device for battery and battery pack
  • State detection method and device for battery and battery pack

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Embodiment Construction

[0033] The present invention is described below based on examples, but the present invention is not limited to these examples. In the following detailed description of the invention, some specific details are set forth in detail. The present invention can be fully understood by those skilled in the art without the description of these detailed parts. In order not to obscure the essence of the present invention, well-known methods, procedures, procedures, components and circuits have not been described in detail.

[0034] Additionally, 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.

[0035] 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 said to be "connected to" another eleme...

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Abstract

Disclosed are a method and a device for detecting the state of a battery and a battery pack. The present invention uses a simple battery model to calculate the current battery state according to historical battery parameters, and at the same time, continuously updates the battery internal resistance and battery capacitance in the battery model based on the change of the charge state, thereby solving the problem on the basis of the simple model The influence of parameters over time and battery power changes on battery power detection improves the accuracy of battery and battery pack state detection.

Description

technical field [0001] The invention relates to power management technology, in particular to a method and device for detecting the state of a battery and a battery pack. Background technique [0002] Detecting the battery status is crucial 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 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. Therefore, there is an urgent need for a more accurate and better adaptable battery or battery state measurement method and device. Co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/367G01R31/396G01R31/389G01R31/388
CPCG01R31/3835G01R31/367G01R31/374G01R31/389G01R31/396G01R31/387
Inventor 黄晓冬曹何金生
Owner NANJING SILERGY SEMICON TECH CO LTD
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