A space energy discharge circuit

Abstract

The present invention provides a space energy discharge circuit, which includes: an energy acquisition unit, an energy discharge main circuit, and a super diode rectifier circuit; the energy discharge main circuit includes: a sampling module, whose input end is connected to the energy acquisition unit, receiving energy to generate a sampling signal; a discharge power tube module, whose input end is connected to the output end of the sampling module, and whose output end is connected to the ground end; a feedback control module, whose input end is connected to the sampling module, receiving the sampling signal to generate a feedback control signal, and whose output end is connected to the discharge power tube module to control the conduction or shutdown of the discharge power tube module; a super diode rectifier circuit, whose input end is connected to the output end of the energy discharge main circuit, for unidirectional energy rectification of the energy output by the energy discharge main circuit. The present invention has the advantages of strong safety, wide range of energy acquisition methods, and high supply and transmission efficiency during the re-shadow period of the spacecraft.

Description

Technical Field

[0001] The invention relates to the field of space power supplies, and in particular to a space energy discharge circuit. Background Art

[0002] Spacecraft need to obtain energy through optoelectronic arrays, nuclear energy, fuel cells and other energy acquisition units to ensure the power needs of multiple payloads of the spacecraft.

[0003] The energy output of the energy acquisition unit cannot be controlled autonomously, and the excess energy needs to be consumed through an energy discharge circuit to ensure the power safety of back-end equipment such as battery packs and loads. Summary of the invention

[0004] The purpose of the present invention is to provide a space energy discharge circuit for use in harsh environments such as space vacuum, atomic oxygen, radiation, etc., to solve the problem of space power supply and achieve high-efficiency, high-safety, and high-reliability energy regulation and transmission.

[0005] To achieve the above-mentioned purpose, the present invention provides a spatial energy discharge circuit, which comprises: an energy acquisition unit, an energy discharge main circuit, and a super diode rectifier circuit; the energy discharge main circuit comprises: a sampling module, whose input end is connected to the energy acquisition unit, and receives energy to generate a sampling signal; a discharge power tube module, whose input end is connected to the output end of the sampling module, and whose output end is connected to the ground end; a feedback control module, whose input end is connected to the sampling module, receives the sampling signal to generate a feedback control signal, and whose output end is connected to the discharge power tube module to control the conduction or shutdown of the discharge power tube module; a super diode rectifier circuit, whose input end is connected to the output end of the energy discharge main circuit, and is used to perform unidirectional energy rectification on the energy output by the energy discharge main circuit; wherein, when the discharge power tube module is turned on, the excess energy collected by the energy acquisition unit is released to the ground end; when the discharge power tube module is turned off, the energy acquired by the energy acquisition unit is stored after unidirectional rectification through the super diode rectifier circuit.

[0006] Preferably, the sampling module includes a current sampling module and a voltage sampling module; the current sampling module includes three electrical connection terminals: a power input terminal, a power output terminal, and a sampling signal output terminal; the power input terminal is connected to the energy acquisition unit circuit, and the power output terminal is connected to the discharge power tube module; the sampling signal output terminal is connected to the feedback control module; after the current sampling module collects the energy obtained by the energy acquisition unit, it generates a current sampling signal, and transmits the current sampling signal to the feedback control module through the sampling signal output terminal; the voltage sampling module includes a voltage divider upper resistor and a voltage divider lower resistor, the positive end of the voltage divider upper resistor is connected to the power output terminal of the current sampling module, and the negative end is connected to the positive end of the voltage divider lower resistor; the negative end of the voltage divider lower resistor is connected to the ground terminal to form a ground release loop for releasing excess energy.

[0007] Preferably, the feedback control module includes a feedback control circuit and a drive circuit; the feedback control circuit has three electrical connection terminals: a current sampling signal input terminal, a voltage sampling signal input terminal and a feedback control pulse output terminal; the current sampling signal input terminal is connected to the sampling signal output terminal in the current sampling module for receiving the current sampling signal; the voltage signal input terminal is connected to the negative end of the upper resistor of the voltage divider and the positive end of the lower resistor of the voltage divider for receiving the voltage sampling signal; the feedback control circuit generates a feedback control signal according to the current sampling signal and the voltage sampling signal, connects the input terminal of the drive circuit through the feedback control pulse output terminal, and transmits the feedback control signal to the drive circuit.

[0008] Preferably, the output end of the driving circuit is connected to the discharge power tube module, and is used to amplify the feedback control signal received from the feedback control circuit to realize the conduction or shutdown of the discharge power tube module.

[0009] Preferably, the feedback control signal is a pulse signal, and when the pulse output signal of the feedback control signal is a peak, the discharge power tube of the discharge power tube module is turned on; when the pulse output signal of the feedback control signal is a trough, the discharge power tube of the discharge power tube module is disconnected.

[0010] Preferably, the discharge power tube module is used to realize excess energy dissipation and energy transmission control of the energy acquisition unit, and includes three electrical connection terminals: a first gate terminal, a first drain terminal, and a first source terminal; the first gate terminal is connected to the output terminal of the driving circuit to receive a feedback control signal; the first drain terminal is connected to the power output terminal of the current sampling module and the positive terminal of the voltage divider upper resistor to form the output terminal of the energy discharge main circuit; the first source terminal is connected to the negative terminal of the voltage divider lower resistor and the ground terminal.

[0011] Preferably, the spatial energy discharge circuit also includes a filter array and a battery pack; the filter array is used for filtering the super diode rectifier circuit, and its positive power end is connected to the output end of the super diode rectifier circuit and the positive end of the battery pack, and its negative power end is connected to the negative end of the battery pack.

[0012] Preferably, the super diode rectifier circuit comprises a super diode and a super diode control circuit; the super diode is used for unidirectional energy rectification between the energy discharge main circuit and the battery pack, and comprises a diode and a connection port; the connection port comprises three electrical connection terminals: a second gate terminal, a second drain terminal, and a second source terminal; wherein the second source terminal is connected to the anode of the diode, the second drain terminal is connected to the cathode of the diode, and the super diode is connected to the super diode control circuit via the connection port.

[0013] Preferably, the super diode control circuit comprises: a surge protection TVS tube, a current amplifying tube, a first comparison amplifier and a second comparison amplifier; the surge protection TVS tube is used for surge protection of the super diode, and comprises two electrical connection terminals: a cathode and an anode; the current amplifying tube is used to amplify the output signal of the first comparison amplifier to drive the super diode; the first comparison amplifier and the second comparison amplifier are used to compare the second drain terminal and the second source terminal voltage of the super diode to generate a judgment signal for controlling the conduction or shutdown of the super diode; the first comparison amplifier and the second comparison amplifier have three electrical connection terminals: a positive input terminal, a negative input terminal, and an output terminal.

[0014] Preferably, the second gate terminal is connected to the cathode of the surge protection TVS tube, the collector of the current amplification tube and the output terminal of the second comparison amplifier; the second drain terminal is electrically connected to the power positive terminal of the filter array, the positive input terminal of the first comparison amplifier and the positive input terminal of the second comparison amplifier; the second source terminal is electrically connected to the output terminal of the energy discharge main circuit, the anode of the surge protection TVS tube, the emitter of the current amplification tube, the negative input terminal of the first comparison amplifier and the negative input terminal of the second comparison amplifier; the judgment signal is generated by comparing the voltages of the first comparison amplifier and the second comparison amplifier, and if the voltage of the second source terminal is higher than that of the second drain terminal, the judgment signal drives the super diode to turn on, so that the energy is stored in the battery pack; if the voltage of the second source terminal is lower than that of the second drain terminal, the judgment signal drives the super diode to turn off, so that the energy is discharged through the ground release loop.

[0015] In summary, compared with the prior art, the space energy discharge circuit provided by the present invention has the following beneficial effects: (1) The energy acquisition unit realizes safe power supply to the spacecraft through the energy discharge main circuit, the super diode rectifier circuit, the filter array, and the battery pack; (2) The energy acquisition unit can be a space power generation device such as a photovoltaic array, nuclear energy, and a fuel cell, so that the spacecraft energy acquisition method can be adapted to a wide range; (3) The energy discharge main circuit realizes the excess energy dissipation and energy transmission control of the energy acquisition unit; (4) The super diode rectifier circuit realizes unidirectional energy rectification between the energy discharge main circuit and the battery pack, and adopts the super diode rectifier circuit to replace the traditional diode to realize low impedance and high efficiency energy transmission; (5) The battery pack realizes energy storage and realizes the energy supply of the spacecraft during the shadow period. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A circuit schematic diagram of a space energy discharge circuit provided by the present invention;

[0017] Figure 2 A schematic diagram of a feedback control circuit of a space energy discharge circuit provided by the present invention. DETAILED DESCRIPTION

[0018] The following will be combined with the attached embodiment of the present invention Figure 1 ~Attached Figure 2 , the technical solutions, structural features, objectives achieved and effects in the embodiments of the present invention are described in detail.

[0019] It should be noted that the drawings are in a very simplified form and use non-precise proportions. They are only used to conveniently and clearly assist in explaining the embodiments of the present invention, and are not used to limit the conditions for the implementation of the present invention. Therefore, they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size, without affecting the effects and purposes that can be achieved by the present invention, should still fall within the scope of the technical content disclosed by the present invention.

[0020] The present invention provides a space energy discharge circuit, such as Figure 1As shown, the space energy discharge circuit includes: an energy acquisition unit 100, an energy discharge main circuit 200, and a super diode rectifier circuit 300; the energy discharge main circuit 200 includes: a sampling module 201, whose input end is connected to the energy acquisition unit 100, and receives energy to generate a sampling signal; a discharge power tube module 202, whose input end is connected to the output end of the sampling module 201, and the output end is connected to the ground end; a feedback control module 203, whose input end is connected to the sampling module 201, receives the sampling signal to generate a feedback control signal, and the output end is connected to the The discharge power tube module 202 is connected to control the conduction or shutdown of the discharge power tube module 202; the super diode rectifier circuit 300, whose input end is connected to the output end of the energy discharge main circuit 200, is used to unidirectionally rectify the energy output by the energy discharge main circuit 200; wherein, when the discharge power tube module 202 is turned on, the excess energy collected by the energy acquisition unit 100 is released to the ground end; when the discharge power tube module 202 is turned off, the energy acquired by the energy acquisition unit 100 is stored after unidirectional rectification by the super diode rectifier circuit 300.

[0021] Among them, Figure 1 As shown, the sampling module 201 includes a current sampling module 211 and a voltage sampling module 212; specifically, the current sampling module 211 includes three electrical connection terminals: a power input terminal 211a, a power output terminal 211b, and a sampling signal output terminal 211c; the power input terminal 211a is connected to the energy acquisition unit 100 circuit, the power output terminal 211b is connected to the discharge power tube module 202, and the sampling signal output terminal 211c is connected to the feedback control module 203; after the current sampling module 211 collects the energy obtained by the energy acquisition unit 100, it generates a current sampling signal, and transmits the current sampling signal to the feedback control module 203 through the sampling signal output terminal 211c. Similarly, the voltage sampling module 212 includes an upper voltage-dividing resistor 2121 and a lower voltage-dividing resistor 2122. The positive end 2121a of the upper voltage-dividing resistor 2121 is connected to the power output end 211b of the current sampling module 211, and the negative end 2121b is connected to the positive end 2122a of the lower voltage-dividing resistor. The negative end (2122b) of the lower voltage-dividing resistor is connected to the ground end. That is to say, the current sampling module 211 and the upper voltage-dividing resistor 2121 and the lower voltage-dividing resistor 2122 are connected in series with the ground end through a circuit to form a ground release loop for releasing excess energy.

[0022] Among them, Figure 1As shown, the feedback control module 203 includes a feedback control circuit 231 and a driving circuit 232; specifically, the feedback control circuit 231 has three electrical connection terminals: a current sampling signal input terminal 231a, a voltage sampling signal input terminal 231b and a feedback control pulse output terminal 231c; the current sampling signal input terminal 231a is connected to the sampling signal output terminal 211c in the current sampling module 211, and is used to receive the current sampling signal; the voltage signal input terminal 231b is connected to the negative terminal 2121b of the upper voltage divider resistor and the positive terminal 2122a of the lower voltage divider resistor, and is used to receive the voltage sampling signal; the feedback control circuit 231 generates a feedback control signal according to the current sampling signal and the voltage sampling signal, and connects the input terminal of the driving circuit 232 through the feedback control pulse output terminal 231c, and transmits the feedback control signal to the driving circuit 232. The output terminal of the driving circuit 232 is connected to the discharge power tube module 202, and is used to amplify the feedback control signal received from the feedback control circuit 231, so as to realize the switch switching drive of the discharge power tube module 202. It should be noted that the feedback control circuit 231 adopts a dual-loop feedback control of input current (ie, current sampling signal) and output voltage (ie, voltage sampling signal), which improves the accuracy of the feedback control circuit.

[0023] Among them, the feedback control signal is a pulse signal. When the pulse output signal of the feedback control signal is a peak, the discharge power tube of the discharge power tube module 202 is turned on; when the pulse output signal of the feedback control signal is a trough, the discharge power tube of the discharge power tube module 202 is turned off.

[0024] Going further, Figure 2 The feedback control circuit schematic diagram is shown in FIG. 2 , wherein the feedback control circuit 231 includes: two groups of follower circuits 2311, two groups of feedback compensation circuits 2312 and a small circuit 2313; wherein one follower circuit 2311 is connected to one feedback compensation circuit 2312 correspondingly; the output ends of the two groups of feedback compensation circuits 2312 are connected to the small circuit 2313; wherein each group of the follower circuits 2311 includes a first operational amplifier component 2311a, whose negative end is connected to the first resistor R1, and whose positive end is grounded, and is used to receive a sampling signal (which In one group, a follower circuit 2311 receives a current sampling signal, and another group of follower circuits 2311 receives a voltage sampling signal), and the first operational amplifier component is connected in parallel with a second resistor R2 for voltage or current follower output; each group of feedback compensation circuits 2312 includes a second operational amplifier component 2312a, whose negative end is connected to the follower circuit 2311 through a third resistor R3, and whose positive end is connected to a reference signal Vref, and the second operational amplifier component 2312a is connected in parallel with a capacitor and resistor component for compensation and adjustment of the sampling signal. The capacitor and resistor component includes a fourth resistor R4 and a first capacitor C1 connected in series, which is connected in parallel with the second capacitor C2 to form a capacitor and resistor component.

[0025] When the voltage sampling value reaches the threshold value VH, the small circuit 2313 selects the voltage output, so that the pulse output signal of the feedback control signal is a peak, and the discharge power tube module 202 is driven to work in a constant voltage state (i.e., a conduction state); when the current sampling value reaches the threshold value VI, the small circuit selects the current output, so that the pulse output signal of the feedback control signal is a trough, and the discharge power tube module 202 is driven to work in a current limiting state (i.e., a shutdown state), thereby realizing dual-input feedback control of input current and output voltage.

[0026] The power dissipation tube module 202 is used to realize the excess energy dissipation and energy transmission control of the energy acquisition unit 100. Figure 1 As shown, it includes three electrical connection terminals: a first gate terminal 202a, a first drain terminal 202b, and a first source terminal 202c; the first gate terminal 202a is connected to the output terminal of the driving circuit 232 to receive the feedback control signal; the first drain terminal 202b is connected to the power output terminal 211b of the current sampling module and the positive terminal 2121a of the voltage-dividing upper resistor to form the output terminal of the energy discharge main circuit 200; the first source terminal 202c is connected to the negative terminal 2122b of the voltage-dividing lower resistor and the ground terminal. It should be noted that the voltage-dividing upper resistor 2121 and the voltage-dividing lower resistor 2122 obtain the voltage sampling signal through the resistance matching design and provide it to the voltage sampling signal input terminal of the feedback control circuit 231. When the feedback control signal received by the first gate terminal 202a is turned on, the energy in the energy acquisition unit 100 is input from the first drain terminal 202b to the discharge power tube module 202 through the current sampling module 211, and output from the first source terminal 202c to the ground terminal to achieve excess energy dissipation; when the feedback control signal received by the first gate terminal 202a is turned off, that is, the discharge power tube module 202 is in an open circuit state, the energy in the energy acquisition unit 100 is directly transmitted to the super diode rectifier circuit 300 through the current sampling module 211 to perform unidirectional rectification of energy. It should be noted that the energy acquisition unit 100 includes a space power generation device such as a photovoltaic array, nuclear energy or a fuel cell.

[0027] Furthermore, the resistance matching design is mainly to ensure that the maximum output power can be obtained on the load. In the case of DC, when the load impedance (i.e., the voltage-dividing upper resistor 2121 and the voltage-dividing lower resistor 2122) is equal to the internal resistance of the signal source (equivalent to the internal resistance of the energy acquisition unit 100 that provides energy), impedance matching is achieved. If a large output current is required, a small load resistance is selected, that is, a voltage-dividing upper resistor 2121 and a voltage-dividing lower resistor 2122 whose internal resistance is less than the internal resistance of the energy acquisition unit 100 are selected; if a large output voltage is required, a large load is selected, that is, a voltage-dividing upper resistor 2121 and a voltage-dividing lower resistor 2122 whose internal resistance is greater than the internal resistance of the energy acquisition unit 100 are selected; if the maximum output power is required, a load resistance that matches the internal resistance of the signal source is selected, that is, a voltage-dividing upper resistor 2121 and a voltage-dividing lower resistor 2122 whose internal resistance is equal to the internal resistance of the energy acquisition unit 100 are selected.

[0028] Among them, Figure 1 As shown, the space energy discharge circuit also includes a filter array 400 and a battery pack 500; the filter array 400 is used for filtering the super diode rectifier circuit 300, and has two electrical connection ends: a positive power end 400a and a negative power end 400b; the positive power end 400a is connected to the output end of the super diode rectifier circuit 300 and the positive end of the battery pack 500, and the negative power end 400b is connected to the negative end of the battery pack 500 and grounded. It should be noted that the filter array 400 includes a plurality of capacitive devices, such as a capacitor compensation cabinet, a capacitor filter, a capacitor voltage multiplier, etc. The battery pack 500 is connected in parallel with the filter array 400 to store the energy of the energy acquisition unit 100, so as to realize the energy supply of the spacecraft during the shadow period.

[0029] Further, if Figure 1 As shown, the super diode rectifier circuit 300 includes a super diode 301 and a super diode control circuit 302; the input end of the super diode rectifier circuit 300 is electrically connected to the output end of the energy discharge main circuit 200, and the output end of the super diode rectifier circuit 300 is electrically connected to the input end (i.e., the power positive end 400a) of the filter array 400.

[0030] Among them, Figure 1 As shown, the super diode 301 is used for unidirectional energy rectification between the energy discharge main circuit 200 and the battery pack 500, and includes a diode D1 and a connection port; the connection port includes three electrical connection terminals: a second gate terminal 301a, a second drain terminal 301b and a second source terminal 301c; wherein the second source terminal 301c is connected to the positive electrode of the diode D1, and the second drain terminal 301b is connected to the negative electrode of the diode D1. The super diode 301 is connected to the super diode control circuit 302 through the connection port to realize the control of turning on or off the diode D1.

[0031] The super diode control circuit 302 includes: a surge protection TVS tube 321, a current increasing tube 322, a first comparison amplifier 323 and a second comparison amplifier 324; wherein the surge protection TVS tube 321 is used for surge protection of the super diode 301, and includes two electrical connection terminals: a cathode and an anode; the current increasing tube 322 is used to amplify the output terminal signal of the first comparison amplifier 323 to drive the super diode 301; the first comparison amplifier 323 and the second comparison amplifier 324 are used to compare the voltages of the second drain terminal 301b and the second source terminal 301c of the super diode 301, so as to generate a judgment signal for controlling the conduction or shutdown of the super diode 301, and the first comparison amplifier 323 and the second comparison amplifier 324 both have three electrical connection terminals: a positive input terminal, a negative input terminal, and an output terminal.

[0032] Specifically, the second gate terminal 301a is connected to the cathode of the surge protection TVS tube 321, the collector of the current increasing tube 322 and the output end of the second comparison amplifier 324; the second drain terminal 301b is electrically connected to the power positive terminal 400a of the filter array 400, the positive input terminal of the first comparison amplifier 323 and the positive input terminal of the second comparison amplifier 324; the second source terminal 301c is electrically connected to the output end of the energy discharge main circuit 200, the anode of the surge protection TVS tube 321, the emitter of the current increasing tube 322, the negative input terminal of the first comparison amplifier 323 and the negative input terminal of the second comparison amplifier 324.

[0033] When the energy obtained by the energy acquisition unit 100 enters the first comparison amplifier 323 and the second comparison amplifier 324 through the second drain terminal 301b and the second source terminal 301c for voltage comparison to generate the judgment signal, if the voltage of the second source terminal 301c is higher than that of the second drain terminal 301b (in this embodiment, the voltage of the second source terminal 301c is 1.2V higher than that of the second drain terminal 301b), the current amplification tube 322 amplifies the judgment signal (i.e., the conduction signal) at the output terminal of the first comparison amplifier 323 to drive The super diode 301 is turned on, so that energy flows through the super diode 302 and is filtered by the filter array 400 and then stored in the battery pack 500; on the contrary, if the voltage of the second source terminal 301c is lower than that of the second drain terminal 301b, the current amplifier 322 amplifies the judgment signal (i.e., the shutdown signal) at the output terminal of the first comparison amplifier 323 to drive the super diode 301 to shut down, so that the energy is discharged through the ground release loop formed by the voltage divider upper resistor 2121 and the voltage divider lower resistor 2122 connected to the ground terminal.

[0034] In summary, compared with the prior art, the space energy discharge circuit provided by the present invention has the advantages of strong safety, a wide range of energy acquisition methods, and the ability to achieve high supply and transmission efficiency during the re-shadow period of the spacecraft.

[0035] Although the content of the present invention has been described in detail through the above preferred embodiments, it should be appreciated that the above description should not be considered as a limitation of the present invention. After reading the above content, it will be apparent to those skilled in the art that various modifications and substitutions of the present invention will occur. Therefore, the protection scope of the present invention should be limited by the appended claims.

Claims

1. A space energy discharge circuit, characterized in that: include: An energy acquisition unit (100), an energy discharge main circuit (200), and a super diode rectifier circuit (300); The energy discharge main circuit (200) comprises: a sampling module (201), whose input end is connected to the energy acquisition unit (100) and receives energy to generate a sampling signal; a discharge power tube module (202), whose input end is connected to the output end of the sampling module (201), and whose output end is connected to the ground end; a feedback control module (203), whose input end is connected to the sampling module (201) and receives the sampling signal to generate a feedback control signal, and whose output end is connected to the discharge power tube module (202) and controls the conduction or shutdown of the discharge power tube module (202); A super diode rectifier circuit (300), the input end of which is connected to the output end of the energy discharge main circuit (200), and is used to perform unidirectional energy rectification on the energy output by the energy discharge main circuit (200); When the discharge power tube module (202) is turned on, the excess energy collected by the energy acquisition unit (100) is released to the ground end; when the discharge power tube module (202) is turned off, the energy acquired by the energy acquisition unit (100) is unidirectionally rectified by the super diode rectifier circuit (300) and then stored; The spatial energy discharge circuit further comprises a filter array (400) and a battery pack (500); the filter array (400) is used for filtering the super diode rectifier circuit (300), a power positive end (400a) thereof is connected to the output end of the super diode rectifier circuit (300) and the positive end of the battery pack (500), and a power negative end (400b) thereof is connected to the negative end of the battery pack (500); The super diode rectifier circuit (300) comprises a super diode (301) and a super diode control circuit (302); the super diode (301) is used for unidirectional energy rectification between the energy discharge main circuit (200) and the battery pack (500), and comprises a diode (D1) and a connection port; the connection port comprises three electrical connection terminals: a second gate terminal (301a), a second drain terminal (301b), and a second source terminal (301c); the second source terminal (301c) is connected to the positive electrode of the diode (D1), the second drain terminal (301b) is connected to the negative electrode of the diode (D1), and the super diode (301) is connected to the super diode control circuit (302) via the connection port; The super diode control circuit (302) comprises: a surge protection TVS tube (321), a current amplification tube (322), a first comparison amplifier (323) and a second comparison amplifier (324); The surge protection TVS tube (321) is used for surge protection of the super diode (301), and comprises two electrical connection ends: a cathode and an anode; The current amplifying tube (322) is used to amplify the signal at the output end of the first comparison amplifier (323) to drive the super diode (301); The first comparison amplifier (323) and the second comparison amplifier (324) are used to compare the voltages of the second drain terminal (301b) and the second source terminal (301c) of the super diode (301) to generate a judgment signal for controlling the on or off of the super diode (301); The first comparison amplifier (323) and the second comparison amplifier (324) have three electrical connection terminals: a positive input terminal, a negative input terminal, and an output terminal; The second gate terminal (301a) is connected to the cathode of the surge protection TVS tube (321), the collector of the current amplification tube (322), and the output terminal of the second comparison amplifier (324); The second drain terminal (301b) is electrically connected to the positive power terminal (400a) of the filter array, the positive input terminal of the first comparison amplifier (323) and the positive input terminal of the second comparison amplifier (324); The second source end (301c) is electrically connected to the output end of the energy discharge main circuit (200), the anode of the surge protection TVS tube (321), the emitter of the current amplification tube (322), the negative input end of the first comparison amplifier (323) and the negative input end of the second comparison amplifier (324).

2. The space energy discharge circuit according to claim 1, characterized in that: The sampling module (201) comprises a current sampling module (211) and a voltage sampling module (212); the current sampling module (211) comprises three electrical connection terminals: a power input terminal (211a), a power output terminal (211b), and a sampling signal output terminal (211c); The power input end (211a) is connected to the energy acquisition unit (100) circuit, and the power output end (211b) is connected to the discharge power tube module (202); The sampling signal output terminal (211c) is connected to the feedback control module (203); After the current sampling module (211) collects the energy obtained by the energy acquisition unit (100), it generates a current sampling signal, and transmits the current sampling signal to the feedback control module (203) through the sampling signal output terminal (211c); The voltage sampling module (212) comprises an upper voltage-dividing resistor (2121) and a lower voltage-dividing resistor (2122); the positive end (2121a) of the upper voltage-dividing resistor (2121) is connected to the power output end (211b) of the current sampling module (211), and the negative end (2121b) is connected to the positive end (2122a) of the lower voltage-dividing resistor; the negative end (2122b) of the lower voltage-dividing resistor is connected to the ground end to form a ground release loop for releasing excess energy.

3. The space energy discharge circuit according to claim 2, characterized in that: The feedback control module (203) comprises a feedback control circuit (231) and a drive circuit (232); the feedback control circuit (231) has three electrical connection terminals: a current sampling signal input terminal (231a), a voltage sampling signal input terminal (231b) and a feedback control pulse output terminal (231c); The current sampling signal input terminal (231a) is connected to the sampling signal output terminal (211c) in the current sampling module (211) and is used to receive the current sampling signal; The voltage sampling signal input terminal (231b) is connected to the negative terminal (2121b) of the voltage-dividing upper resistor and the positive terminal (2122a) of the voltage-dividing lower resistor, and is used to receive the voltage sampling signal; The feedback control circuit (231) generates a feedback control signal according to the current sampling signal and the voltage sampling signal, connects the input end of the drive circuit (232) via the feedback control pulse output end (231c), and transmits the feedback control signal to the drive circuit (232).

4. The space energy discharge circuit according to claim 3, characterized in that: The output end of the driving circuit (232) is connected to the discharge power tube module (202) and is used to amplify the feedback control signal received from the feedback control circuit (231) to realize the conduction or shutdown of the discharge power tube module (202).

5. The space energy discharge circuit according to claim 4, characterized in that: The feedback control signal is a pulse signal. When the pulse output signal of the feedback control signal is a wave crest, the discharge power tube of the discharge power tube module (202) is turned on; when the pulse output signal of the feedback control signal is a wave trough, the discharge power tube of the discharge power tube module (202) is turned off.

6. The space energy discharge circuit according to claim 5, characterized in that: The discharge power tube module (202) is used to realize the excess energy dissipation and energy transmission control of the energy acquisition unit (100), and comprises three electrical connection terminals: a first gate terminal (202a), a first drain terminal (202b), and a first source terminal (202c); the first gate terminal (202a) is connected to the output terminal of the drive circuit (232) to receive a feedback control signal; the first drain terminal (202b) is connected to the power output terminal (211b) of the current sampling module and the positive terminal (2121a) of the voltage divider upper resistor to form the output terminal of the energy discharge main circuit (200); the first source terminal (202c) is connected to the negative terminal (2122b) of the voltage divider lower resistor and the ground terminal.

7. The space energy discharge circuit according to claim 1, characterized in that: The judgment signal is generated by comparing the voltages of the first comparison amplifier (323) and the second comparison amplifier (324); if the voltage of the second source terminal (301c) is higher than that of the second drain terminal (301b), the judgment signal drives the super diode (301) to conduct, so that energy is stored in the battery pack (500); If the voltage of the second source terminal (301c) is lower than that of the second drain terminal (301b), the judgment signal drives the super diode (301) to turn off, so that the energy is discharged through the ground release loop.

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