Satellite power regulation mode switching circuit and satellite device

Abstract

The utility model discloses a satellite power regulation mode switching circuit and a satellite device, comprising a voltage sampling module and a switching trigger module, the voltage sampling module is connected with the controlled end of the switching trigger module, the switching trigger module comprises a first control end and a second control end, a first control end of the switching trigger module is connected with the first power regulation module, a second control end of the switching trigger module is connected with the second power regulation module, the switching trigger module is at least switched between a first trigger state and a second trigger state according to the magnitude of the power supply voltage, and in the first trigger state, the switching trigger module is switched between the first power regulation module and the second power regulation module. In the first triggering state, the first control end of the switching triggering module outputs a first triggering signal to control the first power adjusting module to start and operate, and in the second triggering state, the second control end of the switching triggering module outputs a second triggering signal to control the second power adjusting module to start and operate. And the arrangement and operation and maintenance cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of satellite equipment technology, and in particular to a satellite power adjustment mode switching circuit and satellite device. Background Technology

[0002] With the rapid development of commercial spaceflight and the ever-increasing demand for spacecraft such as communication satellites, cost reduction has become a crucial factor for the sustainable development of commercial spaceflight. Satellite systems typically incorporate solar-powered power supplies, which can include various power regulation modules. Different modules modulate the output power of the satellite power supply to power various components within the satellite system. Examples include DET mode and MPPT mode. In DET mode, the satellite energy system is less efficient, but the power controller is more efficient, while in MPPT mode, the power controller is less efficient, the overall satellite energy system is more efficient, and a larger design margin is required.

[0003] Therefore, each mode has its own advantages and disadvantages. The appropriate power regulation mode needs to be selected based on the actual energy storage of the satellite power supply. However, in the past, it was necessary for staff to send signals from the ground to the satellite to switch modes, which resulted in a lag and required staff to monitor the system at all times, leading to high operation and maintenance costs. Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a satellite power adjustment mode switching circuit and satellite device, which is safe and reliable to use, and reduces deployment and maintenance costs.

[0005] A satellite power regulation mode switching circuit according to a first aspect of the present invention includes: a voltage sampling module for connecting to a satellite power supply to detect the power supply voltage; and a switching trigger module, wherein the voltage sampling module is connected to a controlled terminal of the switching trigger module, the switching trigger module including a first control terminal and a second control terminal, the first control terminal of the switching trigger module being connected to a first power regulation module of the satellite device, and the second control terminal of the switching trigger module being connected to a second power regulation module of the satellite device. The switching trigger module switches between at least a first trigger state and a second trigger state according to the magnitude of the power supply voltage. In the first trigger state, the first control terminal of the switching trigger module outputs a first trigger signal to control the first power regulation module to start operation, and in the second trigger state, the second control terminal of the switching trigger module outputs a second trigger signal to control the second power regulation module to start operation.

[0006] A satellite power adjustment mode switching circuit according to an embodiment of the present invention has at least the following beneficial effects:

[0007] This utility model relates to a satellite power regulation mode switching circuit. A voltage sampling module detects the satellite power supply voltage. When the power supply voltage is below a voltage threshold, the switching trigger module is in a first trigger state. The first control terminal of the switching trigger module outputs a first trigger signal to control the first power regulation module to start operation, while the second control terminal outputs no signal, and the second power regulation module stops. When the power supply voltage is above the voltage threshold, the switching trigger module is in a second trigger state. The second control terminal of the switching trigger module outputs a second trigger signal to control the second power regulation module to start operation, while the first control terminal outputs no signal, and the first power regulation module stops. This design is safe and reliable, reducing deployment and maintenance costs.

[0008] According to some embodiments of the present invention, the switching trigger module includes a first signal generation component and a second signal generation component. A voltage sampling module is connected to the first signal generation component and the second signal generation component respectively. The first signal generation component is connected to the first power adjustment module of the satellite device, and the second signal generation component is connected to the second power adjustment module of the satellite device. In a first trigger state, the first signal generation component generates and outputs a first trigger signal. In a second trigger state, the second signal generation component generates and outputs a second trigger signal.

[0009] According to some embodiments of the present invention, the first signal generation component includes at least one first signal generation unit. The first signal generation unit includes a semiconductor switch Q13, a semiconductor switch Q5, a resistor R22, and a resistor R27. The controlled terminal of the switch Q13 is connected to the voltage sampling module. The input terminal of the switch Q13 is connected to one end of the resistor R22, the input terminal of the switch Q5, and the positive terminal of the satellite power supply, respectively. The output terminal of the switch Q13 is connected to the other end of the resistor R22, one end of the resistor R27, and the controlled terminal of the switch Q5, respectively. The output terminal of the switch Q5 is used to connect to the first power adjustment module of the satellite device. The other end of the resistor R27 is connected to the negative terminal of the satellite power supply.

[0010] According to some embodiments of the present invention, the first signal generation unit further includes a semiconductor switch Q11, the input terminal of the switch Q11 is connected to the positive terminal of the satellite power supply, the output terminal of the switch Q11 is connected to the input terminal of the switch Q5 so that the positive terminal of the satellite power supply is connected to the switch Q5 through the switch Q11, and the controlled terminal of the switch Q11 is connected to the output terminal of the switch Q13.

[0011] According to some embodiments of the present invention, there are multiple first signal generation units, and the multiple first signal generation units are connected in parallel with each other.

[0012] According to some embodiments of this utility model, there are multiple voltage sampling modules and multiple switching trigger modules, and each voltage sampling module is connected to the controlled terminal of the switching trigger module in a one-to-one correspondence.

[0013] According to some embodiments of this utility model, the voltage sampling module includes a resistor R21, a resistor R25, and a Zener diode D1. One end of the resistor R21 is connected to the positive terminal of the satellite power supply, and the other end of the resistor R21 is connected to one end of the resistor R25 and the negative terminal of the Zener diode D1. The positive terminal of the Zener diode D1 is connected to the negative terminal of the satellite power supply, and the other end of the resistor R25 is connected to the controlled terminal of the switching trigger module.

[0014] According to some embodiments of this utility model, the voltage sampling module includes resistors R5, R11, and R13, and a semiconductor switching transistor Q9. One end of resistor R5 is connected to the positive terminal of the satellite power supply, and the other end of resistor R5 is connected to one end of resistor R11 and one end of resistor R13. The other end of resistor R13 is connected to the input terminal of the switching transistor Q9, the output terminal of the switching transistor Q9 is connected to the negative terminal of the satellite power supply, the controlled terminal of the switching transistor Q9 is connected to the controller, and the other end of resistor R11 is connected to the controlled terminal of the switching trigger module.

[0015] According to a second aspect of the present invention, a satellite device includes a satellite power supply, a first power adjustment module, a second power adjustment module, and a satellite power adjustment mode switching circuit disclosed in any of the above embodiments. The satellite power supply is connected to the input terminal of the first power adjustment module, the input terminal of the second power adjustment module, and a voltage sampling module, respectively. The first control terminal of the switching trigger module is connected to the first power adjustment module, and the second control terminal of the switching trigger module is connected to the second power adjustment module.

[0016] The satellite device according to the embodiments of the present utility model has at least the following beneficial effects:

[0017] The satellite device of this utility model adopts the satellite power adjustment mode switching circuit disclosed in any of the above embodiments, which is safe and reliable to use and reduces deployment and maintenance costs.

[0018] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0019] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0020] Figure 1 This is a schematic block diagram of one embodiment of the satellite power adjustment mode switching circuit of this utility model;

[0021] Figure 2 This is a circuit diagram of the first signal generation component in one embodiment of the satellite power adjustment mode switching circuit of this utility model;

[0022] Figure 3 This is a circuit diagram of the second signal generation component in one embodiment of the satellite power adjustment mode switching circuit of this utility model.

[0023] Figure label:

[0024] Satellite power supply 100; first power regulation module 200; second power regulation module 300; voltage sampling module 400; switching trigger module 500; first signal generation component 510; second signal generation component 520. Detailed Implementation

[0025] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0026] In the description of this utility model, it should be understood that the directional descriptions, such as the terms "up," "down," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0027] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0029] like Figures 1 to 3 As shown, a satellite power adjustment mode switching circuit according to a first aspect embodiment of the present invention includes a voltage sampling module 400 and a switching trigger module 500. The voltage sampling module 400 is connected to a satellite power supply 100 to detect the power supply voltage. The voltage sampling module 400 is connected to the controlled terminal of the switching trigger module 500. The switching trigger module 500 includes a first control terminal and a second control terminal. The first control terminal of the switching trigger module 500 is connected to a first power adjustment module 200 of the satellite device, and the second control terminal of the switching trigger module 500 is connected to a second power adjustment module 300 of the satellite device. The switching trigger module 500 switches between at least a first trigger state and a second trigger state according to the magnitude of the power supply voltage. In the first trigger state, the first control terminal of the switching trigger module 500 outputs a first trigger signal to control the first power adjustment module 200 to start operation. In the second trigger state, the second control terminal of the switching trigger module 500 outputs a second trigger signal to control the second power adjustment module 300 to start operation.

[0030] The satellite power supply 100 typically consists of multiple energy storage batteries connected in series. Solar panels convert solar energy into electrical energy, which is then stored in the batteries. Changes in the stored electrical energy in the satellite power supply 100 or the failure of some energy storage batteries will cause changes in the power supply voltage. The first power regulation module 200 and the second power regulation module 300 can be circuit structures formed by power regulation modes in conventional satellite devices, such as DET or MPPT. When the power supply voltage is low, the MPPT regulation mode is selected; when the power supply voltage is high, the DET regulation mode is selected. The following explanation uses MPPT regulation mode for the first power regulation module 200 and DET regulation mode for the second power regulation module 300 as an example.

[0031] This utility model relates to a satellite power regulation mode switching circuit. A voltage sampling module 400 detects the power supply voltage of the satellite power supply 100. When the power supply voltage is lower than a voltage threshold, the switching trigger module 500 is in a first trigger state. The first control terminal of the switching trigger module 500 outputs a first trigger signal to control the first power regulation module 200 to start operation, while the second control terminal has no signal output, and the second power regulation module 300 stops. When the power supply voltage is higher than the voltage threshold, the switching trigger module 500 is in a second trigger state. The second control terminal of the switching trigger module 500 outputs a second trigger signal to control the second power regulation module 300 to start operation, while the first control terminal has no signal output, and the first power regulation module 200 stops. This design is safe and reliable, reducing deployment and maintenance costs.

[0032] In some embodiments of this utility model, the switching trigger module 500 includes a first signal generation component 510 and a second signal generation component 520. The voltage sampling module 400 is connected to the first signal generation component 510 and the second signal generation component 520 respectively. The first signal generation component 510 is connected to the first power adjustment module 200 of the satellite device, and the second signal generation component 520 is connected to the second power adjustment module 300 of the satellite device. In the first trigger state, the first signal generation component 510 generates and outputs a first trigger signal. In the second trigger state, the second signal generation component 520 generates and outputs a second trigger signal.

[0033] When the voltage sampling module 400 detects the power supply voltage, if the power supply voltage is lower than the voltage threshold, the first signal generation component 510 is triggered to form and output a first trigger signal, and if the power supply voltage is higher than the voltage threshold, the second signal generation component 520 is triggered to form and output a second trigger signal.

[0034] In some embodiments of this utility model, such as Figure 2 As shown, the first signal generation component 510 includes at least one first signal generation unit. The first signal generation unit includes a semiconductor switch Q13, a semiconductor switch Q5, a resistor R22, and a resistor R27. The controlled terminal of the switch Q13 is connected to the voltage sampling module 400. The input terminal of the switch Q13 is connected to one end of the resistor R22, the input terminal of the switch Q5, and the positive terminal of the satellite power supply 100. The output terminal of the switch Q13 is connected to the other end of the resistor R22, one end of the resistor R27, and the controlled terminal of the switch Q5. The output terminal of the switch Q5 is used to connect to the first power adjustment module 200 of the satellite device. The other end of the resistor R27 is connected to the negative terminal of the satellite power supply 100.

[0035] Specifically, both switching transistors Q13 and Q5 can be selected from transistors, MOSFETs, etc. For example, switching transistor Q13 can be a P-type transistor, and switching transistor Q5 can be a P-channel MOSFET.

[0036] In some embodiments of this utility model, the first signal generation unit further includes a semiconductor switch Q11, the input terminal of the switch Q11 is connected to the positive terminal of the satellite power supply 100, the output terminal of the switch Q11 is connected to the input terminal of the switch Q5 so that the positive terminal of the satellite power supply 100 is connected to the switch Q5 through the switch Q11, and the controlled terminal of the switch Q11 is connected to the output terminal of the switch Q13.

[0037] Switches Q11 and Q5 work together to achieve a redundancy design. If either switch fails or short-circuits, the other switch can still generate and output the trigger signal normally.

[0038] In some embodiments of this utility model, such as Figure 2 As shown, there are multiple first signal generation units, which are connected in parallel. Multiple first signal generation units can also be used to implement a redundancy design. If any one of the first signal generation units fails, the first trigger signal can be generated and output by another first signal generation unit.

[0039] Alternatively, in some embodiments of this utility model, there are multiple voltage sampling modules 400 and multiple switching trigger modules 500, and each voltage sampling module 400 is connected to the controlled terminal of the switching trigger module 500 in a one-to-one correspondence.

[0040] The redundancy design is achieved by combining multiple voltage sampling modules 400 and switching trigger modules 500.

[0041] In some embodiments of this utility model, the voltage sampling module 400 includes a resistor R21, a resistor R25, and a Zener diode D1. One end of the resistor R21 is connected to the positive terminal of the satellite power supply 100, and the other end of the resistor R21 is connected to one end of the resistor R25 and the negative terminal of the Zener diode D1. The positive terminal of the Zener diode D1 is connected to the negative terminal of the satellite power supply 100, and the other end of the resistor R25 is connected to the controlled terminal of the switching trigger module 500.

[0042] When the power supply voltage is low, the Zener diode D1 forms a stable terminal voltage, thereby providing a high level to the controlled terminal of the switching trigger module 500. When the power supply voltage is high and exceeds the voltage threshold, the Zener diode D1 breaks down, thereby providing a low level to the controlled terminal of the switching trigger module 500.

[0043] In some embodiments of this utility model, the voltage sampling module 400 includes resistors R5, R11, and R13, and a semiconductor switching transistor Q9. One end of resistor R5 is connected to the positive terminal of the satellite power supply 100, and the other end of resistor R5 is connected to one end of resistor R11 and one end of resistor R13. The other end of resistor R13 is connected to the input terminal of the switching transistor Q9, and the output terminal of the switching transistor Q9 is connected to the negative terminal of the satellite power supply 100. The controlled terminal of the switching transistor Q9 is connected to the controller, and the other end of resistor R11 is connected to the controlled terminal of the switching trigger module 500.

[0044] The controller can output a PWM signal to the switching transistor Q9, which can be a transistor or a MOSFET. The controller controls the current through resistors R13 and R5 through the switching transistor Q9. The voltage at the node between resistors R5 and R13 increases with the increase of the power supply voltage. The first signal generation unit or the second signal generation unit generates a trigger signal based on whether the power supply voltage is higher than the voltage threshold.

[0045] In some embodiments of this utility model, such as Figure 3 As shown, the second signal generation component 520 includes a semiconductor switch Q7, a semiconductor switch Q1, a resistor R6, and a resistor R16. The controlled terminal of the switch Q7 is connected to the voltage sampling module 400. The input terminal of the switch Q7 is connected to one end of the resistor R6 and the positive terminal of the satellite power supply 100. The output terminal of the switch Q7 is connected to the other end of the resistor R6, one end of the resistor R16, and the controlled terminal of the switch Q1. The output terminal of the switch Q1 is used to connect to the second power adjustment module 300 of the satellite device. The other end of the resistor R16 is connected to the negative terminal of the satellite power supply 100.

[0046] Similarly, both switching transistors Q7 and Q1 can be selected from transistors, MOSFETs, etc. For example, switching transistor Q7 can be a P-type transistor, and switching transistor Q1 can be a P-channel MOSFET.

[0047] Specifically, voltage sampling modules 400 with different implementations can be used to drive the first signal generation unit and the second signal generation unit to form trigger signals, such as... Figure 2 , 3 As shown, the same voltage sampling module 400 can also be used to drive the first signal generation unit and the second signal generation unit to form a trigger signal.

[0048] by Figure 2 , 3As shown, when the power supply voltage is low, the Zener diode D1 is not broken down, the switch Q13 is turned off, and the switch Q5 is turned on. The first control terminal outputs the first trigger signal, while the controlled terminal of the switch Q7 is turned on when it is low, and the switch Q1 is turned off. The second control terminal fails to output the second trigger signal. When the power supply voltage is higher than the voltage threshold, the Zener diode D1 is broken down, the switch Q13 is turned on, and the switch Q5 is turned off. The first control terminal fails to output the first trigger signal, while the controlled terminal of the switch Q7 is turned off when it is high, and the switch Q1 is turned on. The second control terminal outputs the second trigger signal.

[0049] According to a second aspect embodiment of the present invention, a satellite device includes a satellite power supply 100, a first power adjustment module 200, a second power adjustment module 300, and a satellite power adjustment mode switching circuit disclosed in any of the above embodiments. The satellite power supply 100 is connected to the input terminal of the first power adjustment module 200, the input terminal of the second power adjustment module 300, and the voltage sampling module 400, respectively. The first control terminal of the switching trigger module 500 is connected to the first power adjustment module 200, and the second control terminal of the switching trigger module 500 is connected to the second power adjustment module 300.

[0050] The satellite device of this utility model adopts the satellite power adjustment mode switching circuit disclosed in any of the above embodiments, which is safe and reliable to use and reduces deployment and maintenance costs.

[0051] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0052] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A satellite power adjustment mode switching circuit, characterized in that, include: A voltage sampling module is used to connect to the satellite power supply to detect the power supply voltage; A switching trigger module is provided, and a voltage sampling module is connected to the controlled terminal of the switching trigger module. The switching trigger module includes a first control terminal and a second control terminal. The first control terminal of the switching trigger module is used to connect to a first power regulation module of the satellite device, and the second control terminal of the switching trigger module is used to connect to a second power regulation module of the satellite device. The switching trigger module switches between at least a first trigger state and a second trigger state according to the magnitude of the power supply voltage. In the first trigger state, the first control terminal of the switching trigger module outputs a first trigger signal to control the first power regulation module to start operation. In the second trigger state, the second control terminal of the switching trigger module outputs a second trigger signal to control the second power regulation module to start operation.

2. The satellite power adjustment mode switching circuit according to claim 1, characterized in that: The switching trigger module includes a first signal generation component and a second signal generation component. The voltage sampling module is connected to the first signal generation component and the second signal generation component respectively. The first signal generation component is connected to the first power adjustment module of the satellite device, and the second signal generation component is connected to the second power adjustment module of the satellite device. In the first trigger state, the first signal generation component generates and outputs a first trigger signal. In the second trigger state, the second signal generation component generates and outputs a second trigger signal.

3. The satellite power adjustment mode switching circuit according to claim 2, characterized in that: The first signal generation component includes at least one first signal generation unit. The first signal generation unit includes a semiconductor switch Q13, a semiconductor switch Q5, a resistor R22, and a resistor R27. The controlled terminal of the switch Q13 is connected to the voltage sampling module. The input terminal of the switch Q13 is connected to one end of the resistor R22, the input terminal of the switch Q5, and the positive terminal of the satellite power supply. The output terminal of the switch Q13 is connected to the other end of the resistor R22, one end of the resistor R27, and the controlled terminal of the switch Q5. The output terminal of the switch Q5 is used to connect to the first power adjustment module of the satellite device. The other end of the resistor R27 is connected to the negative terminal of the satellite power supply.

4. The satellite power adjustment mode switching circuit according to claim 3, characterized in that: The first signal generation unit further includes a semiconductor switch Q11. The input terminal of the switch Q11 is connected to the positive terminal of the satellite power supply, and the output terminal of the switch Q11 is connected to the input terminal of the switch Q5 so that the positive terminal of the satellite power supply is connected to the switch Q5 through the switch Q11. The controlled terminal of the switch Q11 is connected to the output terminal of the switch Q13.

5. A satellite power adjustment mode switching circuit according to claim 3, characterized in that: There are multiple first signal generation units, and these multiple first signal generation units are connected in parallel.

6. The satellite power adjustment mode switching circuit according to claim 1, characterized in that: There are multiple voltage sampling modules and multiple switching trigger modules, and each voltage sampling module is connected to the controlled terminal of the switching trigger module in a corresponding manner.

7. A satellite power adjustment mode switching circuit according to claim 1, characterized in that: The voltage sampling module includes resistors R21 and R25, and a Zener diode D1. One end of resistor R21 is connected to the positive terminal of the satellite power supply, and the other end of resistor R21 is connected to one end of resistor R25 and the negative terminal of Zener diode D1. The positive terminal of Zener diode D1 is connected to the negative terminal of the satellite power supply, and the other end of resistor R25 is connected to the controlled terminal of the switching trigger module.

8. A satellite power adjustment mode switching circuit according to claim 1, characterized in that: The voltage sampling module includes resistors R5, R11, and R13, and a semiconductor switching transistor Q9. One end of resistor R5 is connected to the positive terminal of the satellite power supply, and the other end of resistor R5 is connected to one end of resistor R11 and one end of resistor R13. The other end of resistor R13 is connected to the input terminal of the switching transistor Q9, and the output terminal of the switching transistor Q9 is connected to the negative terminal of the satellite power supply. The controlled terminal of the switching transistor Q9 is connected to the controller, and the other end of resistor R11 is connected to the controlled terminal of the switching trigger module.

9. A satellite device, characterized in that, The system includes a satellite power supply, a first power adjustment module, a second power adjustment module, and a satellite power adjustment mode switching circuit as described in any one of claims 1 to 8. The satellite power supply is connected to the input terminal of the first power adjustment module, the input terminal of the second power adjustment module, and a voltage sampling module, respectively. The first control terminal of the switching trigger module is connected to the first power adjustment module, and the second control terminal of the switching trigger module is connected to the second power adjustment module.

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