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Satellite storage battery electric quantity estimation method and system based on complementary filter

A complementary filter and battery technology, applied in the field of satellite power supply, can solve problems such as large amount of calculation, unsuitable for complex algorithms, limited satellite computing resources, etc., to improve estimation accuracy, facilitate spacecraft energy security management, and improve satellite power. The effect of estimating accuracy

Active Publication Date: 2021-05-14
SHANGHAI SATELLITE ENG INST
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Problems solved by technology

The kalman filter estimation method needs to establish an accurate noise error model, and the amount of calculation is large, and the satellite computing resources are limited, so it is not suitable for complex algorithms

Method used

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  • Satellite storage battery electric quantity estimation method and system based on complementary filter
  • Satellite storage battery electric quantity estimation method and system based on complementary filter
  • Satellite storage battery electric quantity estimation method and system based on complementary filter

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Embodiment Construction

[0053]The present invention will be described in detail below with reference to the specific embodiments. The following examples will help to further understand the present invention in any form of technicrat, it will be further understood by those skilled in the art. It should be noted that several variations and improvements can be made without departing from the concept of the present invention without departing from the present invention. These are all of the scope of protection of the present invention.

[0054]Such asfigure 1 The schematic block diagram of the complementary filter is shown.

[0055]In response to the presence of a cumulative error problem for satellite security, the present invention utilizes an open circuit voltage method to estimate the battery power Q.EkLast moment, power Qk-1Difference ΔQkCorrect charge current Ik, Re-use the PI corrected charge and discharge current ITkIntegral operation Get high-precision power estimation Qk.

[0056]The high frequency section of...

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Abstract

The present invention provides a satellite storage battery electric quantity estimation method and system based on a complementary filter, advantages of an ampere-hour meter method and an open-circuit voltage method are combined by utilizing a frequency domain analysis method, advantages of the ampere-hour meter method and advantages of the open-circuit voltage method are complemented, the whole satellite energy estimation precision is greatly improved, and the method has great advantages in the field of satellites with shortage of algorithm resources.

Description

Technical field[0001]The present invention relates to the field of satellite power supplies, and in particular, to a satellite battery power estimation method and system based on a complementary filter.Background technique[0002]At present, the overtime of the stamping capacity statistics uses the method estimation of the safety meter, and the safety period is severe with time, and the estimation accuracy is poor. The safety time method estimates that the power is large and the real power supply is large, and it is impossible to use the full energy management, and the reference value cannot be used for users.[0003]The open circuit voltage method is a method of electricity estimation, and is also commonly used in the intensive energy estimation method. It can be seen from the operating characteristics of the battery, and the open circuit voltage of the battery pack and the remaining capacity of the battery have a certain correspondence. As the battery capacity increases, the open circ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/20G06F17/10G01R31/367G01R31/387G01R31/388G01R31/396
CPCG06F30/20G06F17/10G01R31/388G01R31/387G01R31/396G01R31/367
Inventor 蒋孝勇洪平李宇超刘赞张涛
Owner SHANGHAI SATELLITE ENG INST
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