CN114530832A - Direct current breaker - Google Patents
Direct current breaker Download PDFInfo
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- CN114530832A CN114530832A CN202210210101.6A CN202210210101A CN114530832A CN 114530832 A CN114530832 A CN 114530832A CN 202210210101 A CN202210210101 A CN 202210210101A CN 114530832 A CN114530832 A CN 114530832A
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- mos module
- signal
- electrically connected
- circuit breaker
- control unit
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/22—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for distribution gear, e.g. bus-bar systems; for switching devices
Abstract
The invention discloses a direct current breaker, which comprises a detection unit, a signal processing unit and a signal processing unit, wherein the detection unit is used for detecting a voltage signal, a current signal, a temperature signal, a short-circuit signal and a communication signal of the breaker; the control unit is electrically connected with the detection unit; the first end of the first MOS module is electrically connected with the input end of the breaker, and the second end of the first MOS module is electrically connected with a load; the first end of the second MOS module is electrically connected with the input end of the breaker, and the second end of the second MOS module is electrically connected with the load; the first MOS module and the second MOS module are connected with the control unit, the control unit instructs the first MOS module to be turned off according to at least one of a voltage signal, a current signal, a temperature signal, a short-circuit signal and a communication signal, and when the first MOS module fails to be turned off, the control unit can receive the failure signal and instructs the second MOS module to be turned off according to at least one of the voltage signal, the current signal, the temperature signal, the short-circuit signal and the communication signal.
Description
Technical Field
The invention relates to the technical field of circuit breakers, in particular to a direct-current circuit breaker.
Background
The existing low-voltage circuit breaker generally comprises a shell, a mechanism system, a contact system, an arc extinguishing system, a hot bimetal element and an inlet and outlet terminal, and is firm and reliable. However, when the existing low-voltage circuit breaker is applied to a direct current system, the breaking time of the circuit breaker is long due to no zero-crossing current, and an electric arc generated by the circuit breaker lasts for a relatively long time, so that a problem of serious contact ablation abrasion may be generated, so that the operable times of the circuit breaker are reduced, that is, the electrical life of the circuit breaker is reduced.
Therefore, a dc circuit breaker is needed to solve the above problems.
Disclosure of Invention
The invention aims to solve one of the problems in the prior related art at least to a certain extent, and therefore the invention provides the direct current circuit breaker which is shorter in breaking time, can realize microsecond shutdown and does not generate electric arc during shutdown, so that the problem that parts are burnt by the electric arc is avoided, and the circuit breaker has the electric service life capable of realizing millions of times of shutdown. And the double-protection effect is achieved, so that the power grid can continuously supply power, and the safety and the reliability are higher.
The above purpose is realized by the following technical scheme:
a direct current circuit breaker comprising:
the detection unit is used for detecting a voltage signal, a current signal, a temperature signal, a short-circuit signal and a communication signal of the circuit breaker;
the control unit is electrically connected with the detection unit;
the first end of the first MOS module is electrically connected with the input end of the circuit breaker, and the second end of the first MOS module is electrically connected with a load;
the first end of the second MOS module is electrically connected with the input end of the circuit breaker, and the second end of the second MOS module is electrically connected with the load;
the first MOS module and the second MOS module are connected with the control unit, the control unit instructs the first MOS module to be turned off according to at least one of the voltage signal, the current signal, the temperature signal, the short-circuit signal and the communication signal, and when the first MOS module is turned off, the control unit can receive a fault signal and instructs the second MOS module to be turned off according to at least one of the voltage signal, the current signal, the temperature signal, the short-circuit signal and the communication signal.
Optionally, the method further comprises:
the first end of the first driving protection circuit is electrically connected with the control unit, the second end of the first driving protection circuit is electrically connected with the first MOS module, and the control unit drives the first MOS module to be turned off through the first driving protection circuit;
and a first end of the second driving protection circuit is electrically connected with the control unit, a second end of the second driving protection circuit is electrically connected with the second MOS module, and the control unit drives the second MOS module to be switched off through the second driving protection circuit.
Optionally, the first MOS module includes a first MOS module and a second MOS module, the source S of the first MOS module is electrically connected to the source S of the second MOS module to form the first end of the first MOS module, the drain D of the first MOS module is electrically connected to the drain D of the second MOS module to form the second end of the first MOS module, and the gate G of the first MOS module and the gate G of the second MOS module are both electrically connected to the first driving protection circuit.
Optionally, the second MOS module includes a third MOS module and a fourth MOS module, the source S of the third MOS module is electrically connected to the source S of the fourth MOS module to form the first end of the second MOS module, the drain D of the third MOS module is electrically connected to the drain D of the fourth MOS module to form the second end of the second MOS module, and the gate G of the third MOS module and the gate G of the fourth MOS module are both electrically connected to the second driving protection circuit.
Optionally, when the control unit determines at least one of an over-voltage and an under-voltage according to the voltage signal, an over-current according to the current signal, an over-temperature according to the temperature signal, and an isolation communication signal is received, the control unit outputs a driving signal to the first driving protection circuit, so that the first drive protection circuit drives the first MOS module to be turned off, when the turn-off of the first MOS module fails, and when the control unit judges that at least one of overvoltage and undervoltage is generated according to the voltage signal, overcurrent is generated according to the current signal, overtemperature is determined according to the temperature signal and an isolation communication signal is received, the control unit outputs a driving signal to the second driving protection circuit, so that the second driving protection circuit drives the second MOS module to be turned off.
Optionally, the circuit breaker further comprises a power supply unit, wherein the power supply unit is arranged at the RTN input end of the circuit breaker, and the power supply unit is electrically connected with the control unit, the first MOS module and the second MOS module.
Optionally, the portable electronic device further comprises a communication unit, the power supply unit is electrically connected with the communication unit, a first end of the communication unit is electrically connected with the control unit, and a second end of the communication unit is a communication interface.
Optionally, the power supply unit includes:
a fuse, a first end of which is electrically connected with the RTN input end;
a resistor, the first end of which is electrically connected with the second end of the fuse;
a first end of the power supply chip is electrically connected with a second end of the resistor;
the first end of the primary winding of the transformer is electrically connected with the second end of the power chip, the second end of the primary winding of the transformer is electrically connected with the first MOS module and the second MOS module, the first end of the secondary winding of the transformer is electrically connected with the communication unit, and the second end of the secondary winding of the transformer is grounded.
Optionally, the power supply unit further comprises:
a TVS tube, wherein the first end of the TVS tube is electrically connected with the fuse;
a voltage regulator tube, the first end of which is electrically connected with the fuse and the second end of which is grounded through a triode;
the secondary winding of the transformer is electrically connected with the communication unit and the control unit through the first voltage reduction and stabilization circuit;
and the first voltage reduction and stabilization circuit is electrically connected with the communication unit and the control unit through the second voltage reduction and stabilization circuit.
Optionally, the detection unit includes:
the voltage signal acquisition unit is arranged between the input voltage division end of the transformer and the control unit and is used for detecting a voltage signal of the input voltage division end of the transformer and transmitting the voltage signal to the control unit;
the current signal acquisition unit is arranged between the input end of the circuit breaker and the control unit and used for detecting a current signal flowing through the circuit breaker and transmitting the current signal to the control unit;
the temperature signal acquisition unit is arranged between a terminal of the circuit breaker and the control unit and used for detecting a temperature signal of the terminal and transmitting the temperature signal to the control unit;
the short-circuit protection unit is arranged between the front end of the current signal acquisition unit and the first MOS module and the second MOS module, and is used for detecting a short-circuit signal of the circuit breaker, comparing the circuit breaker signal and transmitting the circuit breaker signal to the first MOS module and the second MOS module so as to turn off the first MOS module and the second MOS module;
and the communication signal acquisition unit is arranged between the control unit and the communication unit and used for detecting the communication signal of the communication unit and transmitting the communication signal to the control unit.
Optionally, the detection unit further includes a metering circuit, and the metering circuit is disposed at an output end of the circuit breaker and is configured to calculate a voltage, a current, a power, an electric quantity, and a frequency output to the load.
Optionally, still include button and status indicator, the button is used for configuration address and manual control the circuit breaker is closed and closed, the status indicator is used for instructing the operating condition of circuit breaker, the circuit breaker can be connected with remote platform communication, and the user can pass through remote platform instruction the circuit breaker is closed and closed.
Optionally, the direct current circuit breaker further comprises a plug-in mounting structure, and the direct current circuit breaker is detachably connected with the distributor and the load through the plug-in mounting structure.
Compared with the prior art, the invention at least comprises the following beneficial effects:
according to the direct current circuit breaker, the first MOS module and the second MOS module are arranged to achieve turn-off, the turn-off speed is high, microsecond turn-off can be achieved, electric arcs cannot be generated during turn-off, and therefore the problem that parts are burnt by the electric arcs is solved, and the circuit breaker has the service life of achieving million turn-off. In addition, according to the direct current breaker provided by the invention, the first MOS module is used as a common module, the second MOS module is used as a standby module, and when the first MOS module breaks down, the second MOS module can take over the work of the first MOS module, so that the breaker has a double-protection effect, and the continuous power supply and power utilization of a power grid are safer and more reliable.
Drawings
Fig. 1 is a schematic circuit diagram of a dc circuit breaker according to an embodiment of the present invention.
In the figure:
11. a first MOS module; 111. a first MOS module; 112. a second MOS module; 12. a second MOS module; 121. a third MOS module; 122. a fourth MOS module; 13. a first drive protection circuit; 14. a second drive protection circuit;
2. a temperature signal acquisition unit;
3. a load;
4. a power supply unit;
5. a control unit;
6. a communication unit;
7. a voltage signal acquisition unit;
8. a current signal acquisition unit;
9. and a short-circuit protection unit.
Detailed Description
The present invention is illustrated by the following examples, but the present invention is not limited to these examples. Modifications to the embodiments of the invention or equivalent substitutions of parts of technical features without departing from the spirit of the invention are intended to be covered by the scope of the claims of the invention.
Referring to fig. 1, the present invention provides a dc circuit breaker, which includes a detection unit, a control unit 5, a first MOS module 11 and a second MOS module 12. The detection unit is used for detecting a voltage signal, a current signal, a temperature signal, a short-circuit signal and a communication signal of the circuit breaker. The control unit 5 is electrically connected to the detection unit. The first MOS module 11 has a first end electrically connected to the input terminal of the circuit breaker, and a second end electrically connected to the load 3. The first end of the second MOS module 12 is electrically connected to the input end of the circuit breaker, and the second end is electrically connected to the load 3. The first MOS module 11 and the second MOS module 12 are both in communication connection with the control unit 5, the control unit 5 instructs the first MOS module 11 to turn off according to at least one of a voltage signal, a current signal, a temperature signal, a short-circuit signal, and a communication signal, and when the turn-off of the first MOS module 11 fails, the control unit 5 can receive the failure signal and instructs the second MOS module 12 to turn off according to at least one of a voltage signal, a current signal, a temperature signal, a short-circuit signal, and a communication signal.
According to the direct current circuit breaker provided by the invention, the first MOS module 11 and the second MOS module 12 are arranged to realize turn-off, the turn-off speed is high, microsecond turn-off can be realized, and an electric arc cannot be generated during turn-off, so that the problem that parts are burnt by the electric arc is avoided, and the circuit breaker has the service life of realizing turn-off in millions. In addition, according to the direct current breaker provided by the invention, the first MOS module 11 is used as a common module, the second MOS module 12 is used as a standby module, and when the first MOS module 11 breaks down, the second MOS module 12 can take over the work of the first MOS module 11, so that the breaker has a double protection effect, and the continuous power supply and the power utilization of a power grid are safer and more reliable.
Specifically, when the control unit 5 instructs the first MOS module 11 to turn off, but the first MOS module 11 does not perform any interruption within a preset time (e.g., 0.01 second), the control unit 5 determines that the first MOS module 11 has a fault.
Specifically, the circuit breaker in the present embodiment is designed for use in a circuit with a voltage of DC60V ± 10V and a current of 63A or less.
Optionally, a first driving protection circuit 13 and a second driving protection circuit 14 are further included. The first end of the first driving protection circuit 13 is electrically connected with the control unit 5, the second end of the first driving protection circuit is electrically connected with the first MOS module 11, and the control unit 5 drives the first MOS module 11 to be turned off through the first driving protection circuit 13. A first end of the second driving protection circuit 14 is electrically connected to the control unit 5, a second end of the second driving protection circuit is electrically connected to the second MOS module 12, and the control unit 5 drives the second MOS module 12 to turn off through the second driving protection circuit 14.
Optionally, the first MOS module 11 includes a first MOS module 111 and a second MOS module 112, a source S of the first MOS module 111 is electrically connected to a source S of the second MOS module 112 to form a first end of the first MOS module 11, a drain D of the first MOS module 111 is electrically connected to a drain D of the second MOS module 112 to form a second end of the first MOS module 11, and a gate G of the first MOS module 111 and a gate G of the second MOS module 112 are both electrically connected to the first driving protection circuit 13. The first MOS module 111 and the second MOS module 112 are provided to ensure the reliability of the first MOS module 11.
Optionally, the second MOS module 12 includes a third MOS module 121 and a fourth MOS module 122, a source S of the third MOS module 121 is electrically connected to a source S of the fourth MOS module 122 to form a first end of the second MOS module 12, a drain D of the third MOS module 121 is electrically connected to a drain D of the fourth MOS module 122 to form a second end of the second MOS module 12, and a gate G of the third MOS module 121 and a gate G of the fourth MOS module 122 are both electrically connected to the second driving protection circuit 14. The third MOS module 121 and the fourth MOS module 122 are arranged to ensure the reliability of the second MOS module 12.
Optionally, when the control unit 5 determines that at least one of the overvoltage under-voltage according to the voltage signal, the overcurrent according to the current signal, the over-temperature according to the temperature signal, and the isolation communication signal is received occurs, the control unit 5 outputs a driving signal to the first driving protection circuit 13, so that the first driving protection circuit 13 drives the first MOS module 11 to turn off, when the first MOS module 11 fails to turn off, and when the control unit 5 determines that at least one of the overvoltage under-voltage according to the voltage signal, the overcurrent according to the current signal, the over-temperature according to the temperature signal, and the isolation communication signal is received occurs, the control unit 5 outputs a driving signal to the second driving protection circuit 14, so that the second driving protection circuit 14 drives the second MOS module 12 to turn off.
Optionally, the circuit breaker further comprises a power supply unit 4, the power supply unit 4 is disposed at an RTN input end of the circuit breaker, and the power supply unit 4 is electrically connected to the control unit 5, the first MOS module 11 and the second MOS module 12 so as to be powered on by the control unit 5, the first MOS module 11 and the second MOS module 12.
Optionally, the portable electronic device further comprises a communication unit 6, the power supply unit 4 is electrically connected with the communication unit 6, a first end of the communication unit 6 is electrically connected with the control unit 5, and a second end is a communication interface. Through setting up communication unit 6 to realize the remote control effect to the circuit breaker. Specifically, the isolation communication signal can be remotely sent to the communication unit 6 through the APP or the PC, and the control unit 5 outputs a driving signal to the first driving protection circuit 13 according to the isolation communication signal, so that the first driving protection circuit 13 drives the first MOS module 11 to turn off, or when the first MOS module 11 fails, the control unit 5 outputs a driving signal to the second driving protection circuit 14 according to the isolation communication signal, so that the second driving protection circuit 14 drives the second MOS module 12 to turn off.
Optionally, the second end of the communication unit 6 is provided with two sets of communication ports, and both the two sets of communication ports can perform 485, 4G, NB, LORA, or Zigbee communication.
Optionally, the power supply unit 4 includes a fuse, a resistor, a power supply chip, and a transformer. The first end of the fuse is electrically connected with the RTN input end. The first end of the resistor is electrically connected with the second end of the fuse. The first end of the power supply chip is electrically connected with the second end of the resistor. The first end of the primary winding of the transformer is electrically connected with the second end of the power chip, the second end of the primary winding of the transformer is electrically connected with the first MOS module 11 and the second MOS module 12, and the secondary winding of the transformer is electrically connected with the communication unit 6 and the control unit 5, so that the power unit 4, the communication unit 6 and the control unit 5 are electrified.
Optionally, the power supply unit 4 further includes a TVS tube, a voltage regulator tube, a first voltage reduction and stabilization circuit, and a second voltage reduction and stabilization circuit. The first end of the TVS tube is electrically connected with the fuse. The first end of the voltage-stabilizing tube is electrically connected with the fuse, and the second end of the voltage-stabilizing tube is grounded through the triode. The secondary winding of the transformer is electrically connected with the communication unit 6 through the first voltage reduction and stabilization circuit. Is electrically connected with the control unit 5 through the second voltage reduction and stabilization circuit. By arranging the first voltage reduction and stabilization circuit and the second voltage reduction and stabilization circuit, the voltage output from the secondary winding of the transformer can be reduced to a preset voltage to be suitable for the control unit 5 and the communication unit 6.
Illustratively, in the present embodiment, the voltage of the secondary winding of the transformer outputs 5V after passing through the first voltage-reducing and stabilizing circuit, and outputs 3.3V after passing through the second voltage-reducing and stabilizing circuit.
Optionally, the detection unit includes a voltage signal acquisition unit 7, a current signal acquisition unit 8, a temperature signal acquisition unit 2, a communication signal acquisition unit, and a short-circuit protection unit 9. The voltage signal acquisition unit 7 is arranged between the input voltage division end of the circuit breaker and the control unit 5, and is used for detecting a voltage signal of the input voltage division end of the circuit breaker and transmitting the voltage signal to the control unit 5. The current signal acquisition unit 8 is arranged between the input end of the circuit breaker and the control unit 5, and the shunt is arranged at the input end of the circuit breaker and used for detecting a current signal flowing through the circuit breaker and transmitting the current signal to the control unit 5. The temperature signal collecting unit 2 is disposed between a terminal of the circuit breaker and the control unit 5, and the temperature sensor is disposed at the terminal for detecting a temperature signal of the terminal and transmitting the temperature signal to the control unit 5. The short-circuit protection unit 9 is arranged between the front end of the current signal acquisition unit 8 and the first MOS module 11 and the second MOS module 12, and is used for detecting a short-circuit signal of the circuit breaker, comparing the circuit breaker signal and transmitting the circuit breaker signal to the first MOS module 11 and the second MOS module 12, so that the first MOS module 11 and the second MOS module 12 are turned off. The communication signal acquisition unit is arranged between the control unit 5 and the communication unit 6 and used for detecting the communication signal of the communication unit 6 and transmitting the communication signal to the control unit 5.
Optionally, the detection unit further comprises a metering circuit, which is disposed at an output end of the circuit breaker, and is configured to calculate the voltage, current, power, amount of electricity and frequency output to the load 3.
Optionally, a button is included, which is electrically connected to the control unit 5. If the button is pressed for more than two seconds, the address configuration can be carried out on the circuit breaker; and the button is pressed for less than two seconds, so that the circuit breaker can be controlled to be switched off and switched on.
Optionally, a status indicator light is included, which is electrically connected to the control unit 5. When the status indicator lamp is in a red lamp and green lamp alternative flashing state, the indicated state is that the circuit breaker is started; when the status indicator lamp is in an normally-off state, the indicated state is that the circuit breaker is turned off; when the status indicator lamp is in a normally-on state of the green lamp, the indicated state is that the circuit breaker is closed; when the state indicator lamp is in a red lamp normally-on state, the state of indication is that the circuit breaker breaks down; when the status indicator lamp is in the state of alternately flashing yellow light and red light, the circuit breaker is indicated to be in the state of configuring the address.
Optionally, the circuit breaker can be in communication connection with a remote platform through a communication interface, and a user can instruct the circuit breaker to turn off and turn on through the remote platform.
Optionally, the remote platform includes platforms such as an upper computer, a PC, an APP, and an applet.
Optionally, the circuit breaker further has a plug-in mounting structure, and the direct current circuit breaker passes through the plug-in mounting structure can be dismantled with distributor and load and be connected to make the installation and the dismantlement of circuit breaker convenient and fast. It should be noted that the plug-in mounting structure is the prior art, and is not described herein again.
Optionally, the circuit breaker also has a signal control function to prevent installation from being out of place. Specifically, when the circuit breaker is not mounted or dismounted in place, the circuit breaker cannot be powered on, so that the safety of the circuit breaker is ensured.
What has been described above are merely some embodiments of the present invention. It will be apparent to those skilled in the art that various changes and modifications can be made without departing from the inventive concept thereof, and these changes and modifications can be made without departing from the spirit and scope of the invention.
Claims (13)
1. A direct current circuit breaker, comprising:
the detection unit is used for detecting a voltage signal, a current signal, a temperature signal, a short-circuit signal and a communication signal of the circuit breaker;
a control unit (5) electrically connected to the detection unit;
a first MOS module (11) with a first end electrically connected with the input end of the circuit breaker and a second end electrically connected with a load (3);
a second MOS module (12) with a first end electrically connected with the input end of the breaker and a second end electrically connected with the load (3);
the first MOS module (11) and the second MOS module (12) are in communication connection with the control unit (5), the control unit (5) instructs the first MOS module (11) to be turned off according to at least one of the voltage signal, the current signal, the temperature signal, the short-circuit signal and the communication signal, when the first MOS module (11) is turned off and has a fault, the control unit (5) can receive the fault signal and instructs the second MOS module (12) to be turned off according to at least one of the voltage signal, the current signal, the temperature signal, the short-circuit signal and the communication signal.
2. The direct current circuit breaker according to claim 1, characterized by further comprising:
the first end of the first driving protection circuit (13) is electrically connected with the control unit (5), the second end of the first driving protection circuit is electrically connected with the first MOS module (11), and the control unit (5) drives the first MOS module (11) to be turned off through the first driving protection circuit (13);
and a first end of the second driving protection circuit (14) is electrically connected with the control unit (5), a second end of the second driving protection circuit is electrically connected with the second MOS module (12), and the control unit (5) drives the second MOS module (12) to be switched off through the second driving protection circuit (14).
3. The dc circuit breaker according to claim 2, wherein the first MOS module (11) comprises a first MOS module (111) and a second MOS module (112), the source S of the first MOS module (111) is electrically connected to the source S of the second MOS module (112) to form a first end of the first MOS module (11), the drain D of the first MOS module (111) is electrically connected to the drain D of the second MOS module (112) to form a second end of the first MOS module (11), and the gate G of the first MOS module (111) and the gate G of the second MOS module (112) are both electrically connected to the first driving protection circuit (13).
4. The dc circuit breaker according to claim 2, wherein the second MOS module (12) comprises a third MOS module (121) and a fourth MOS module (122), the source S of the third MOS module (121) is electrically connected to the source S of the fourth MOS module (122) to form a first end of the second MOS module (12), the drain D of the third MOS module (121) is electrically connected to the drain D of the fourth MOS module (122) to form a second end of the second MOS module (12), and the gate G of the third MOS module (121) and the gate G of the fourth MOS module (122) are both electrically connected to the second driving protection circuit (14).
5. The DC circuit breaker according to claim 2, wherein when at least one of the control unit (5) determines over-voltage and under-voltage according to the voltage signal, determines over-current according to the current signal, determines over-temperature according to the temperature signal, and receives an isolation communication signal, the control unit (5) outputs a driving signal to the first driving protection circuit (13) so that the first driving protection circuit (13) drives the first MOS module (11) to turn off, when the first MOS module (11) turns off, a fault occurs, and when at least one of the control unit (5) determines over-voltage and under-voltage according to the voltage signal, determines over-current according to the current signal, determines over-temperature according to the temperature signal, and receives an isolation communication signal, the control unit (5) outputs a driving signal to the second driving protection circuit (14), so that the second drive protection circuit (14) drives the second MOS module (12) to be turned off.
6. The direct current circuit breaker according to any one of claims 1 to 5, further comprising a power supply unit (4), wherein the power supply unit (4) is arranged at the RTN input of the circuit breaker, and wherein the power supply unit (4) is electrically connected to the control unit (5), the first MOS module (11) and the second MOS module (12).
7. The direct current circuit breaker according to claim 6, further comprising a communication unit (6), wherein the power supply unit (4) is electrically connected with the communication unit (6), a first end of the communication unit (6) is electrically connected with the control unit (5), and a second end is a communication interface.
8. The direct current circuit breaker according to claim 7, characterized in that said power supply unit (4) comprises:
a fuse, a first end of which is electrically connected with the RTN input end;
a resistor, the first end of which is electrically connected with the second end of the fuse;
a first end of the power supply chip is electrically connected with a second end of the resistor;
the first end of the primary winding of the transformer is electrically connected with the second end of the power chip, the second end of the primary winding of the transformer is electrically connected with the first MOS module (11) and the second MOS module (12), the first end of the secondary winding of the transformer is electrically connected with the communication unit (6), and the second end of the secondary winding of the transformer is grounded.
9. The direct current circuit breaker according to claim 8, characterized in that said power supply unit (4) further comprises:
a TVS tube, wherein the first end of the TVS tube is electrically connected with the fuse;
a voltage regulator tube, the first end of which is electrically connected with the fuse and the second end of which is grounded through a triode;
the secondary winding of the transformer is electrically connected with the communication unit (6) and the control unit (5) through the first voltage reduction and stabilization circuit;
and the first voltage reduction and stabilization circuit is electrically connected with the communication unit (6) and the control unit (5) through the second voltage reduction and stabilization circuit.
10. The direct current circuit breaker according to claim 8, characterized in that said detection unit comprises:
the voltage signal acquisition unit (7) is arranged between the input voltage division end of the circuit breaker and the control unit (5) and is used for detecting a voltage signal of the input voltage division end of the transformer and transmitting the voltage signal to the control unit (5);
the current signal acquisition unit (8) is arranged between the input end of the circuit breaker and the control unit (5) and is used for detecting a current signal flowing through the circuit breaker and transmitting the current signal to the control unit (5);
the temperature signal acquisition unit (2) is arranged between a terminal of the circuit breaker and the control unit (5) and is used for detecting a temperature signal of the terminal and transmitting the temperature signal to the control unit (5);
the short-circuit protection unit (9) is arranged between the front end of the current signal acquisition unit (8) and the first MOS module (11) and the second MOS module (12) and is used for detecting a short-circuit signal of the circuit breaker, comparing the circuit breaker signal and transmitting the circuit breaker signal to the first MOS module (11) and the second MOS module (12) so as to enable the first MOS module (11) and the second MOS module (12) to be turned off;
and the communication signal acquisition unit is arranged between the control unit (5) and the communication unit (6) and is used for detecting the communication signal of the communication unit (6) and transmitting the communication signal to the control unit (5).
11. The direct current circuit breaker according to claim 10, characterized in that said detection unit further comprises a metering circuit arranged at the output of said circuit breaker for calculating the voltage, current, power, quantity of electricity and frequency output to said load (3).
12. The dc circuit breaker of claim 11, further comprising a button for configuring an address and manually controlling the circuit breaker to open and close and a status indicator light for indicating an operational status of the circuit breaker, the circuit breaker being communicatively connectable to a remote platform through which a user can command the circuit breaker to open and close.
13. The dc circuit breaker of claim 8, further comprising a plug-in mounting structure by which the dc circuit breaker is removably connected to a distributor and a load.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210210101.6A CN114530832A (en) | 2022-03-04 | 2022-03-04 | Direct current breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210210101.6A CN114530832A (en) | 2022-03-04 | 2022-03-04 | Direct current breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114530832A true CN114530832A (en) | 2022-05-24 |
Family
ID=81627270
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210210101.6A Pending CN114530832A (en) | 2022-03-04 | 2022-03-04 | Direct current breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114530832A (en) |
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2022
- 2022-03-04 CN CN202210210101.6A patent/CN114530832A/en active Pending
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