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Pico-nano satellite power supply achieved through maximum power point tracking technology

A technology of maximum power point and satellite power supply, which is applied in the field of satellite power supply, can solve problems such as system failure, and achieve an effect that is conducive to rapid integration

Active Publication Date: 2015-01-21
哈尔滨工大卫星技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem that most of the existing Pina satellite power supply systems rely on software for control and are prone to system failure due to software defects, the present invention proposes a Pina satellite power supply using maximum power point tracking technology

Method used

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  • Pico-nano satellite power supply achieved through maximum power point tracking technology
  • Pico-nano satellite power supply achieved through maximum power point tracking technology
  • Pico-nano satellite power supply achieved through maximum power point tracking technology

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specific Embodiment approach 1

[0014] Specific implementation mode 1. Combination figure 1 Describe this specific embodiment, a kind of Pina satellite power supply that adopts maximum power point tracking technology described in this specific embodiment includes solar cell group 1, maximum power point tracking controller 2, charging controller 3, battery protector 4, Battery pack 5, DC voltage conversion unit 6 and power distribution unit 7, the power signal output end of the solar battery pack 1 is connected to the power signal input end of the maximum power point tracking controller 2, and the control of the maximum power point tracking controller 2 The signal output terminal is connected to the first control signal input terminal of the charging controller 3, the second control signal input and output terminal of the charging controller 3 is connected to the first control signal output and input terminal of the battery protector 4 and then connected to the bus bar, and the battery protection The second c...

specific Embodiment approach 2

[0028] Embodiment 2. The difference between this embodiment and the Pina satellite power supply using the maximum power point tracking technology described in Embodiment 1 is that the solar cell group 1 is composed of N solar cells connected in series and parallel. , N is an integer greater than or equal to 2.

[0029] In this embodiment, the solar battery group 1 includes 2 solar battery monomers connected in parallel to form a group, a total of 3 groups, each solar battery is a gallium arsenide solar battery, and the power conversion efficiency can reach 28%.

specific Embodiment approach 3

[0030] Embodiment 3. The difference between this embodiment and the Pina satellite power supply using the maximum power point tracking technology described in Embodiment 1 is that the battery pack 5 is composed of battery cells connected in parallel.

[0031] In this embodiment, the battery is connected in parallel with three lithium-ion batteries for independent charge and discharge. The normal voltage of the battery is 3.7V, the capacity of a single battery is 2600mAh, and the total capacity of the three batteries is 7800mAh, or 23.4Wh, which can meet the needs of satellites.

[0032] image 3Shown is the lithium-ion battery charging curve, the ordinate on the left represents the charging current, the unit is A, the ordinate on the right represents the battery voltage, the unit is V, the abscissa is the charging time of the jewel, the unit is s, and the curve A represents the charging current, Curve B represents the battery voltage. The charging process of lithium-ion batter...

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Abstract

The invention provides a pico-nano satellite power supply achieved through the maximum power point tracking technology and relates to the field of satellite power supplies. The pico-nano satellite power supply solves the problem that most of existing pico-nano satellite power supply systems are controlled through software and accordingly software defects lead to system failures. The power supply signal output end of a solar battery pack is connected with the power supply signal input end of a maximum power point tracking controller, the control signal output end of the maximum power point tracking controller is connected with the first control signal input end of a charge controller, the second control signal input and output end of the charge controller is connected with the first control signal output and input end of a storage battery protector and then connected to a bus, the second control signal input and output end of the storage battery protector is connected with the power supply signal output and input end of a storage battery pack, the control signal input end of a direct voltage conversion unit is connected to the bus, and the control signal input end of a power distribution unit is connected with the bus and the control signal output end of the direct voltage conversion unit at the same time and outputs voltage. The pico-nano satellite power supply is applied to supplying power to a pico-nano satellite.

Description

technical field [0001] The invention relates to the field of satellite power supply. Background technique [0002] Pina satellite is a direction for the development of my country's aerospace technology. Compared with other types of satellites, Pina satellite has the characteristics of short design and development cycle, low cost, easy modularization and mass production, and easy management, which is conducive to the development of new technologies on-orbit test verification. At present, a large number of scientific research institutions and universities at home and abroad are conducting research on Pina satellites, and a large number of Pina satellites have successfully flown in orbit. [0003] The power supply system of the satellite is one of the important core systems of the satellite. It is responsible for the important task of supplying power to the entire satellite and is the lifeline of the satellite. For Pina satellites, the power supply system must have the charact...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/35H02H7/18G05F1/67
CPCG05F1/67H02H7/18H02J7/35Y02E10/56
Inventor 王峰王骋陈雪芹韦明川冯田雨郭金生李冬柏俞阳苗悦
Owner 哈尔滨工大卫星技术有限公司
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