Switching device and spacecraft

Abstract

The utility model discloses a switching device and a spacecraft. According to the switching device, a magnetic latching switch module comprises a plurality of magnetic latching relays, the input ends of the magnetic latching relays are all connected with a load power supply, the output ends of the magnetic latching relays are all connected with a load, and the conduction control input ends of the magnetic latching relays are connected with an instruction power supply; the conduction control output end of the magnetic latching relay is connected with the conduction driving module, the turn-off control input end of the magnetic latching relay is connected with an instruction power supply, the turn-off control output end of the magnetic latching relay is connected with the turn-off driving module, and the conduction driving module and the turn-off driving module are further connected with the control module; the magnetic protection switch module is used for controlling on or off of a power supply loop between a load and a load power supply; the control module is used for controlling the conduction driving module to drive the magnetic protection switch module to be conducted, or controlling the turn-off driving module to drive the magnetic protection switch module to be turned off. The switching device provided by the embodiment of the utility model is beneficial to ensuring effective control of load power supply.

Description

TECHNICAL FIELD

[0001] The utility model relates to space technology field especially relates to a switch device and spacecraft. BACKGROUND

[0002] With the development of space technology and the demand of the times, the satellite power is bigger and bigger, in order to cope with the power load distribution, multiple relays must be connected in parallel to provide load power supply capacity.

[0003] When the relay is more, the drive current required for controlling the relay is bigger.However, the current capacity of the satellite service computer driving the relay is limited, when the drive current required for the relay exceeds the current capacity of the satellite service computer driving the relay, the risk of satellite load power supply control failure is prone to appear. SUMMARY

[0004] The utility model provides a switch device and spacecraft to ensure the effective control of load power supply.

[0005] According to an aspect of the utility model, a switch device is provided, the switch device includes: magnetic preservation switch module, conduction drive module, off drive module and control module;

[0006] The magnetic preservation switch module includes multiple magnetic latching relays, the input end of the magnetic latching relay is connected with load power supply, the output end of the magnetic latching relay is connected with load, the conduction control input end of the magnetic latching relay is connected with instruction power supply, the conduction control output end of the magnetic latching relay is connected with the conduction drive module, the off control input end of the magnetic latching relay is connected with the instruction power supply, the off control output end of the magnetic latching relay is connected with the off drive module, the conduction drive module and the off drive module are also connected with the control module;

[0007] The magnetic preservation switch module is used for controlling the conduction or off of the power supply loop between the load and the load power supply;The control module is used for controlling the conduction drive module to drive the magnetic preservation switch module to conduct, or controlling the off drive module to drive the magnetic preservation switch module to off.

[0008] Optionally, the conduction drive module includes: conduction isolation unit and conduction drive unit;

[0009] The input end of the conduction isolation unit is connected with the magnetic latching relay, the output end of the conduction isolation unit is connected with the input end of the conduction drive unit, the output end of the conduction drive unit is grounded, and the control end of the conduction drive unit is connected with the control module;

[0010] The conduction isolation unit is used for isolating the magnetic latching relay from the conduction driving unit; and the conduction driving unit is used for driving the magnetic latching relay to conduct.

[0011] Optionally, the conduction driving unit comprises at least one conduction driving relay and at least one conduction driving diode.

[0012] The control input end of the conduction driving relay is connected with the instruction power supply, the control output end of the conduction driving relay is connected with the anode end of the conduction driving diode, the cathode end of the conduction driving diode is connected with the control module, the input end of the conduction driving relay is connected with the conduction isolation unit, and the output end of the conduction driving relay is grounded.

[0013] Optionally, the conduction isolation unit comprises at least one conduction isolation diode.

[0014] The anode end of each conduction isolation diode is connected with one of the magnetic latching relays in one-to-one correspondence, and the cathode end of the conduction isolation diode is connected with the conduction driving unit.

[0015] Optionally, the turn-off driving module comprises a turn-off isolation unit and a turn-off driving unit.

[0016] The input end of the turn-off isolation unit is connected with the magnetic latching relay, the output end of the turn-off isolation unit is connected with the input end of the turn-off driving unit, the output end of the turn-off driving unit is grounded, and the control end of the turn-off driving unit is connected with the control module.

[0017] The turn-off isolation unit is used for isolating the magnetic latching relay from the turn-off driving unit; and the turn-off driving unit is used for driving the magnetic latching relay to turn off.

[0018] Optionally, the turn-off driving unit comprises at least one turn-off driving relay and at least one turn-off driving diode.

[0019] The control input end of the turn-off driving relay is connected with the instruction power supply, the control output end of the turn-off driving relay is connected with the anode end of the turn-off driving diode, the cathode end of the turn-off driving diode is connected with the control module, the input end of the turn-off driving relay is connected with the turn-off isolation unit, and the output end of the turn-off driving relay is grounded.

[0020] Optionally, the turn-off isolation unit comprises at least one turn-off isolation diode.

[0021] The anode end of each turn-off isolation diode is connected with one of the magnetic latching relays in one-to-one correspondence, and the cathode end of the turn-off isolation diode is connected with the turn-off driving unit.

[0022] Optionally, the switch device further comprises a detection module;

[0023] The detection module is connected with the magnetic latching switch module, and the detection module is further connected with the control module;

[0024] The detection module is configured to detect an output voltage of the magnetic latching switch module, and the control module is further configured to determine a state of the magnetic latching switch module according to the output voltage of the magnetic latching switch module.

[0025] Optionally, the detection module comprises a first resistor and a second resistor;

[0026] A first end of the first resistor is connected with the magnetic latching switch module, a second end of the first resistor is connected with a first end of the second resistor, a second end of the second resistor is grounded, and the second end of the first resistor is further connected with the control module.

[0027] According to another aspect of the present application, a spacecraft is provided, comprising a load power supply and the switch device according to any one of the above embodiments.

[0028] The control module controls the turn-on or turn-off of the magnetic latching relay in the magnetic latching switch module through the turn-on driving module and the turn-off driving module, thereby controlling the power-on or power-off of the load. The control module controls the turn-on or turn-off of the magnetic latching relay in the magnetic latching switch module through the turn-on driving module and the turn-off driving module, respectively, and the control module can drive multiple magnetic latching relays at the same time, which is conducive to ensuring the effective control of the power supply of the load.

[0029] It should be understood that the content described in this part is not intended to identify the key or important features of the embodiments of the present application, nor is it used to limit the scope of the present application. Other features of the present application will become apparent from the following description. BRIEF DESCRIPTION OF DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0031] Figure 1 is a schematic diagram of a switch device provided by an embodiment of the present application;

[0032] Figure 2 is a schematic diagram of another switch device provided by an embodiment of the present application;

[0033] Figure 3 is a schematic view of another switch device provided by an embodiment of the present application;

[0034] Figure 4 is a schematic view of another switch device provided by an embodiment of the present application;

[0035] Figure 5 is a schematic view of another switch device provided by an embodiment of the present application;

[0036] Figure 6 is a schematic view of another switch device provided by an embodiment of the present application;

[0037] Figure 7 is a schematic view of another switch device provided by an embodiment of the present application;

[0038] Figure 8 is a schematic view of a spacecraft provided by an embodiment of the present application. DETAILED DESCRIPTION

[0039] In order to make the personnel in the technical field better understand the present application scheme, the technical scheme in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by the person skilled in the art without creative labor should belong to the scope of protection of the present application.

[0040] It should be noted that the terms "first", "second", and the like in the specification and claims of the present application and the above drawings are used to distinguish similar objects, and do not have to be used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device that includes a series of steps or units does not have to be limited to those steps or units clearly listed, but can include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0041] The utility model embodiment provides a kind of switch device. The switch device can be applied to spacecraft, controls the power supply of load in spacecraft. The control module of this embodiment controls the conduction or shutdown of magnetic latching relay in magnetic latching switch module by conducting drive module and shutdown drive module respectively, control module can drive multiple magnetic latching relays simultaneously, it is favorable to ensure the effective control to load power supply. Figure 1 It is a kind of switch device schematic diagram provided by the utility model embodiment. Refer to Figure 1 The switch device includes: magnetic latching switch module 110, conducting drive module 120, shutdown drive module 130 and control module 140.

[0042] Magnetic latching switch module 110 includes multiple magnetic latching relays J1, the input end of magnetic latching relay J1 is connected with load power supply 10, the output end of magnetic latching relay J1 is connected with load 20, the conduction control input end of magnetic latching relay J1 is connected with instruction power supply VCC, the conduction control output end of magnetic latching relay J1 is connected with conducting drive module 120, the shutdown control input end of magnetic latching relay J1 is connected with instruction power supply VCC, the shutdown control output end of magnetic latching relay J1 is connected with shutdown drive module 130, conducting drive module 120 and shutdown drive module 130 are also connected with control module 140;Magnetic latching switch module 110 is used to control the conduction or shutdown of power supply loop between load 10 and load power supply 20;Control module 140 is used to control conducting drive module 120 drive magnetic latching switch module 110 conduction, or control shutdown drive module 130 drive magnetic latching switch module 110 shutdown.

[0043] Specifically, control module 140 controls the work of conducting drive module 120 and the work of shutdown drive module 130 in time. That is to say, conducting drive module 120 and shutdown drive module 130 drive magnetic latching switch module 110 in time. When conducting drive module 120 drives magnetic latching switch module 110, magnetic latching switch module 110 conducts;When shutdown drive module 130 drives magnetic latching switch module 110, magnetic latching switch module 110 shuts down. Wherein, magnetic latching relay J1 is a kind of relay that can keep in a stable state (normally open or normally closed), until receiving opposite direction excitation signal, change state. That is to say, magnetic latching relay J1 does not need external continuous drive to keep in a stable state. Therefore, conducting drive module 120 and shutdown drive module 130 do not need to drive magnetic latching relay J1 continuously.

[0044] Exemplarily, the control of the turn-on driving module 120 and the turn-off driving module 130 by the control module 140 can be realized by a turn-on control signal and a turn-off control signal. When the turn-on driving module 120 obtains the turn-on control signal generated by the control module 140, the turn-on driving module 120 drives the magnetic latching relay J1 in the magnetic latching switch module 110 to turn on. After the magnetic latching relay J1 turns on, the control module 140 stops generating the turn-on control signal. At this time, the turn-on driving module 120 stops driving the magnetic latching relay J1. Due to the characteristics of the magnetic latching relay J1, the magnetic latching switch module 110 is maintained in the turn-on state. When the turn-off driving module 130 obtains the turn-off control signal generated by the control module 140, the turn-off driving module 130 drives the magnetic latching relay J1 in the magnetic latching switch module 110 to turn off. After the magnetic latching relay J1 turns off, the control module 140 stops generating the turn-off control signal. At this time, the turn-off driving module 130 stops driving the magnetic latching relay J1. Due to the characteristics of the magnetic latching relay J1, the magnetic latching switch module 110 is maintained in the turn-off state. Exemplarily, the judgment of whether the state conversion of the magnetic latching relay J1 is completed (the turn-on state is converted to the turn-off state or the turn-off state is converted to the turn-on state) can be realized by a delay, that is, the control module 140 judges that the state conversion of the magnetic latching relay J1 is completed after a preset time delay, and then stops generating the turn-on control signal or the turn-off control signal. It should be noted that the preset time should be greater than the actual state conversion time of the magnetic latching relay J1. In actual application, the preset time can be set according to actual needs, and the embodiment does not limit this.

[0045] The control module 140 in the embodiment of the utility model controls the turn-on or turn-off of the magnetic latching relay J1 in the magnetic latching switch module 110 through the turn-on driving module 120 and the turn-off driving module 130, so as to realize the control of the power-on or power-off of the load 20. The control module 140 in the embodiment controls the turn-on or turn-off of the magnetic latching relay J1 in the magnetic latching switch module 110 through the turn-on driving module 120 and the turn-off driving module 130 respectively, and the control module 140 can drive multiple magnetic latching relays J1 at the same time, which is beneficial to ensuring the effective control of the power supply of the load 20.

[0046] Figure 2 is another schematic view of a switch device provided by the embodiment of the utility model. On the basis of the above embodiment, optionally, Figure 2 The turn-on driving module 120 comprises a turn-on isolation unit 121 and a turn-on driving unit 122.

[0047] The input end of the conduction isolation unit 121 is connected with the magnetic latching relay J1, the output end of the conduction isolation unit 121 is connected with the input end of the conduction driving unit 122, the output end of the conduction driving unit 122 is grounded, and the control end of the conduction driving unit 122 is connected with the control module 140; the conduction isolation unit 121 is used for isolating the magnetic latching relay J1 from the conduction driving unit 122; and the conduction driving unit 122 is used for driving the magnetic latching relay J1 to conduct.

[0048] Specifically, when the conduction driving unit 122 obtains the conduction control signal generated by the control module 140, the conduction driving unit 122 is turned on, at this time, the conduction control output end of the magnetic latching relay J1 is grounded, the coil between the conduction control input end and the conduction control output end of the magnetic latching relay J1 is powered on under the action of the command power supply VCC, and the magnetic latching relay J1 is turned on under the action of the coil between the conduction control input end and the conduction control output end. After the magnetic latching relay J1 is turned on, the control module 140 stops generating the conduction control signal, at this time, the conduction driving unit 122 is turned off, and the coil between the conduction control input end and the conduction control output end of the magnetic latching relay J1 is powered off. But due to the characteristics of the magnetic latching relay J1, the magnetic latching relay J1 in the magnetic latching switch module 110 is maintained in the conduction state. Among them, each magnetic latching relay J1 in the magnetic latching switch module 110 is connected to the conduction driving unit 122 through the conduction isolation unit 121, so that when one or more magnetic latching relays J1 in the magnetic latching switch module 110 fail, the magnetic latching relays J1 in the magnetic latching switch module 110 that have not failed can still continue to work.

[0049] Figure 3 It is another schematic view of a switch device provided by the embodiment of the utility model. On the basis of each of the above embodiments, optionally, Figure 3 The conduction driving unit 122 comprises at least one conduction driving relay J2 and at least one conduction driving diode D1.

[0050] The control input end of the conduction driving relay J2 is connected with the command power supply VCC, the control output end of the conduction driving relay J2 is connected with the anode end of the conduction driving diode D1, the cathode end of the conduction driving diode D1 is connected with the control module 140, the input end of the conduction driving relay J1 is connected with the conduction isolation unit 121, and the output end of the conduction driving relay 121 is grounded. It should be noted that in actual application, at least two conduction driving relays J2 and at least two driving diodes D1 can be arranged in the conduction driving unit 122 to serve as backup redundancy and improve the reliability of the conduction driving unit 122.

[0051] On the basis of each of the above embodiments, optionally, continuing to refer to Figure 3 The conduction isolation unit 121 comprises at least one conduction isolation diode D2.

[0052] The anode end of each conduction isolation diode D2 is connected in one-to-one correspondence with each magnetic latching relay J1, and the cathode end of each conduction isolation diode D2 is connected with the conduction driving unit 122. The number of the conduction isolation diodes D2 is the same as the number of the magnetic latching relays J1 in the magnetic latching switch module 110, and each magnetic latching relay J1 in the magnetic latching switch module 110 is connected to the conduction driving unit 122 through the corresponding conduction isolation diode D2, so that when one or more magnetic latching relays J1 in the magnetic latching switch module 110 fail, the non-failed magnetic latching relays J1 in the magnetic latching switch module 110 can still continue to work.

[0053] Figure 4 is a schematic diagram of another switch device provided by an embodiment of the present application. On the basis of the above embodiments, the magnetic latching switch module 110 can be connected to the conduction driving unit 122 through the conduction isolation diode D2, and the magnetic latching switch module 110 can be connected to the shutdown driving unit 132 through the shutdown isolation unit 131. Figure 4 The shutdown driving module 130 comprises a shutdown isolation unit 131 and a shutdown driving unit 132.

[0054] The input end of the shutdown isolation unit 131 is connected with the magnetic latching relay J1, the output end of the shutdown isolation unit 131 is connected with the input end of the shutdown driving unit 132, the output end of the shutdown driving unit 132 is grounded, and the control end of the shutdown driving unit 132 is connected with the control module 140; the shutdown isolation unit 131 is used for isolating the magnetic latching relay J1 from the shutdown driving unit 132; and the shutdown driving unit 132 is used for driving the magnetic latching relay J1 to shut down.

[0055] Specifically, when the shutdown driving unit 132 obtains the shutdown control signal generated by the control module 140, the shutdown driving unit 132 is turned on, at this time, the shutdown control output end of the magnetic latching relay J1 is grounded, the coil between the shutdown control input end and the shutdown control output end of the magnetic latching relay J1 is powered on under the action of the command power VCC, and the magnetic latching relay J1 is turned off under the action of the coil between the shutdown control input end and the shutdown control output end. After the magnetic latching relay J1 is turned off, the control module 140 stops generating the shutdown control signal, at this time, the shutdown driving unit 132 is turned off, and the coil between the shutdown control input end and the shutdown control output end of the magnetic latching relay J1 is powered off. However, due to the characteristics of the magnetic latching relay J1, the magnetic latching switch module 110 is maintained in the shutdown state. Each magnetic latching relay J1 in the magnetic latching switch module 110 is connected to the shutdown driving unit 132 through the shutdown isolation unit 131, so that when one or more magnetic latching relays J1 in the magnetic latching switch module 110 fail, the non-failed magnetic latching relays J1 in the magnetic latching switch module 110 can still continue to work.

[0056] Figure 5is a schematic view of another switch device provided by the embodiment of the utility model. On the basis of each of the above embodiments, optionally, referring to Figure 5 The shutdown driving unit 132 comprises at least one shutdown driving relay J3 and at least one shutdown driving diode D3.

[0057] The control input end of the shutdown driving relay J3 is connected with the instruction power supply VCC, the control output end of the shutdown driving relay J3 is connected with the anode end of the shutdown driving diode D3, the cathode end of the shutdown driving diode D3 is connected with the control module 140, the input end of the shutdown driving relay J3 is connected with the shutdown isolation unit 131, and the output end of the shutdown driving relay J3 is grounded.

[0058] On the basis of each of the above embodiments, optionally, continuing to refer to Figure 5 The shutdown isolation unit 131 comprises at least one shutdown isolation diode D4.

[0059] The anode end of each shutdown isolation diode D4 is connected with each magnetic holding relay J1 one by one, and the cathode end of the shutdown isolation diode D4 is connected with the shutdown driving unit 132.

[0060] Figure 6 is a schematic view of another switch device provided by the embodiment of the utility model. On the basis of each of the above embodiments, optionally, referring to Figure 6 The switch device further comprises a detection module 150.

[0061] The detection module 150 is connected with the magnetic holding switch module 110, and the detection module 150 is also connected with the control module 140; the detection module 150 is used for detecting the output voltage of the magnetic holding switch module 110; and the control module 140 is also used for judging the state of the magnetic holding switch module 110 according to the output voltage of the magnetic holding switch module 110.

[0062] Specifically, the control module 140 acquires the output voltage of the magnetic latching switch module 110 detected by the detection module 150.

[0063] When the control module 140 controls the on driving module 120 to drive the magnetic latching switch module 110 to turn on, the control module 140 judges whether the state conversion of the magnetic latching switch module 110 is completed according to the output voltage of the magnetic latching switch module 110 detected by the detection module 150.

[0064] Figure 7 is a schematic view of another switch device provided by the embodiment of the present application. Figure 7 The detection module 150 comprises a first resistor R1 and a second resistor R2.

[0065] The first end of the first resistor R1 is connected with the magnetic latching switch module 110, the second end of the first resistor R1 is connected with the first end of the second resistor R2, the second end of the second resistor R2 is grounded, and the second end of the first resistor R1 is further connected with the control module 140.

[0066] The utility model further provides a spacecraft. Figure 8 is a schematic view of a spacecraft provided by the embodiment of the present application. Figure 8 The spacecraft 1000 comprises a load power supply 10 and the switch device 100 of any of the above embodiments.

[0067] It should be noted that the spacecraft 1000 provided by the embodiment has the beneficial effects of the switch device 100 provided by any of the above embodiments, which will not be described here.

[0068] It should be understood that the various forms of flow shown above can be used to reorder, add or delete steps. For example, the steps described in the present application can be executed in parallel, sequentially or in a different order, as long as the desired results of the technical solutions of the present application can be achieved, which is not limited herein.

[0069] The above specific embodiments do not constitute a limitation on the protection scope of the present application. Those skilled in the art should understand that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A switching device, characterized by The application relates to a magnetic latching switch module, a conduction driving module, an off driving module and a control module. The magnetic latching switch module comprises a plurality of magnetic latching relays, the input end of the magnetic latching relays is connected with a load power supply, the output end of the magnetic latching relays is connected with a load, the conduction control input end of the magnetic latching relays is connected with an instruction power supply, the conduction control output end of the magnetic latching relays is connected with the conduction driving module, the off control input end of the magnetic latching relays is connected with the instruction power supply, the off control output end of the magnetic latching relays is connected with the off driving module, and the conduction driving module and the off driving module are further connected with the control module. The magnetic latching switch module is used for controlling the conduction or off of a power supply loop between the load and the load power supply; and the control module is used for controlling the conduction driving module to drive the magnetic latching switch module to conduct or controlling the off driving module to drive the magnetic latching switch module to off. The conduction driving module comprises a conduction isolation unit and a conduction driving unit.

2. The switching device of claim 1, wherein The input end of the conduction isolation unit is connected with the magnetic latching relays, the output end of the conduction isolation unit is connected with the input end of the conduction driving unit, the output end of the conduction driving unit is grounded, and the control end of the conduction driving unit is connected with the control module. The conduction isolation unit is used for isolating the magnetic latching relays from the conduction driving unit; and the conduction driving unit is used for driving the magnetic latching relays to conduct. The conduction driving unit comprises at least one conduction driving relay and at least one conduction driving diode.

3. The switching device of claim 2, wherein The control input end of the conduction driving relay is connected with the instruction power supply, the control output end of the conduction driving relay is connected with the anode end of the conduction driving diode, the cathode end of the conduction driving diode is connected with the control module, the input end of the conduction driving relay is connected with the conduction isolation unit, and the output end of the conduction driving relay is grounded. The conduction isolation unit comprises at least one conduction isolation diode.

4. The switching device of claim 3, wherein The anode end of each conduction isolation diode is connected with one of the magnetic latching relays in one-to-one correspondence, and the cathode end of the conduction isolation diode is connected with the conduction driving unit. The off driving module comprises an off isolation unit and an off driving unit.

5. The switching device of claim 1, wherein The input end of the off isolation unit is connected with the magnetic latching relays, the output end of the off isolation unit is connected with the input end of the off driving unit, the output end of the off driving unit is grounded, and the control end of the off driving unit is connected with the control module. The off isolation unit is used for isolating the magnetic latching relays from the off driving unit; and the off driving unit is used for driving the magnetic latching relays to off. The off driving unit comprises at least one off driving relay and at least one off driving diode.

6. The switching device of claim 5, wherein ​ The control input end of the turn-off driving relay is connected with the instruction power supply, the control output end of the turn-off driving relay is connected with the anode end of the turn-off driving diode, the cathode end of the turn-off driving diode is connected with the control module, the input end of the turn-off driving relay is connected with the turn-off isolation unit, and the output end of the turn-off driving relay is grounded.

7. The switching device of claim 6, wherein The turn-off isolation unit comprises at least one turn-off isolation diode. The anode end of each of the turn-off isolation diodes is connected with one of the magnetic holding relays in one-to-one correspondence, and the cathode end of each of the turn-off isolation diodes is connected with the turn-off driving unit.

8. The switching device of claim 1, wherein Further comprising: a detection module; The detection module is connected with the magnetic holding switch module, and the detection module is also connected with the control module. The detection module is used for detecting the output voltage of the magnetic holding switch module, and the control module is also used for judging the state of the magnetic holding switch module according to the output voltage of the magnetic holding switch module.

9. The switching device of claim 8, wherein, The detection module comprises a first resistor and a second resistor. The first end of the first resistor is connected with the magnetic holding switch module, the second end of the first resistor is connected with the first end of the second resistor, the second end of the second resistor is grounded, and the second end of the first resistor is also connected with the control module.

10. A spacecraft, characterized by, Further comprising: a load power supply and the switch device according to any one of claims 1-9.

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