CN116799799A - Intelligent distribution box - Google Patents
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Abstract
The invention discloses an intelligent distribution box which comprises an alternating current input circuit, an alternating current output circuit, an input detection circuit, a control module circuit, a state indication circuit and a control power supply circuit, wherein the alternating current input circuit is connected with the alternating current output circuit; the alternating current input circuit is used for accessing alternating current, and the control module circuit is connected with the alternating current input circuit through the input detection circuit to detect the electricity utilization safety of the alternating current input circuit; the state indicating circuit is connected with the control module circuit, and the control module circuit controls the state indicating circuit to indicate the state of the intelligent distribution box; the control power supply circuit provides working power supply for the input detection circuit, the control module circuit and the state indication circuit. The intelligent distribution box can effectively improve the electricity utilization safety of a motor home, and can reasonably distribute electricity utilization to ensure the electricity utilization requirement of a user.
Description
Technical Field
The invention relates to the field of motor home, in particular to an intelligent distribution box.
Background
With the improvement of travel demands and consumption levels of people and vehicles, the market of refitted vehicles such as motor home, trailer and the like, the safety and reliability of electricity utilization are increasingly focused by end users. For electric power consumption of a motor home, the motor home is mainly divided into two parts of direct current power supply and alternating current power supply; the direct current power supply is derived from an original vehicle starting battery and an additionally arranged backup battery, the voltage of the direct current power supply is 12VDC, and the direct current power supply belongs to safe and extremely low voltage relative to a human body; the ac power supply mainly comes from the output of a vehicle-mounted inverter (direct current inversion) and the ac input of an ac power grid (such as a power grid of a motor home camp), and the voltage of the ac power supply is 230VAC, which belongs to dangerous high voltage relative to human bodies.
However, the existing motor home is not equipped with a distribution box with complete functions, or is only equipped with a drain space switch at the vehicle-mounted inversion output end and a drain space switch at the mains supply input end, and several space switches are scattered as output branches for overcurrent protection, so that the configuration cannot ensure complete effective grounding, and therefore, the safety of alternating current power consumption of the motor home cannot be effectively protected, and therefore, an intelligent distribution box for improving the safety of the motor home needs to be developed.
Disclosure of Invention
The invention aims to provide an intelligent distribution box which can effectively improve the alternating current electricity safety of a motor home.
In order to achieve the above object, the solution of the present invention is:
an intelligent distribution box comprises an alternating current input circuit, an alternating current output circuit, an input detection circuit, a control module circuit, a state indication circuit and a control power supply circuit; the alternating current input circuit is used for accessing alternating current; the number of the alternating current output circuits is at least one, the alternating current output circuits are used for outputting alternating current, and the input ends of the alternating current output circuits are connected with the output ends of the alternating current input circuits through input leakage protection switches; the input detection circuit comprises an input voltage detection circuit, an input frequency detection circuit and a zero-live wire reverse connection detection circuit; the control module circuit is connected with the alternating current input circuit through the input voltage detection circuit, the input frequency detection circuit and the zero-live wire reverse connection detection circuit, and is used for detecting whether the input voltage, the input frequency and the zero-live wire of the alternating current input circuit are in reverse connection or not respectively; the state indicating circuit is connected with the control module circuit, and the control module circuit controls the state indicating circuit to indicate whether the input voltage and the input frequency of the alternating current input circuit are in a normal input range or not and whether the zero and the fire wire of the alternating current input circuit are reversely connected or not; the control power supply circuit is connected with the alternating current input circuit, the input detection circuit, the control module circuit and the state indication circuit and is used for providing working power supply for the input detection circuit, the control module circuit and the state indication circuit.
Each alternating current output circuit is provided with a current transformer, and the input side of the current transformer of each alternating current output circuit is connected with the live wire output end of the alternating current output circuit in series; the output side of the current transformer of each alternating current output circuit is connected with the control module circuit through a current sampling circuit; each alternating current output circuit is provided with an output switch circuit for controlling whether the alternating current output circuit is output or not, and the control end of the output switch circuit of each alternating current output circuit is connected with the control module circuit and the control module circuit controls the on-off of the output switch circuit.
The intelligent distribution box further comprises a communication circuit connected with the control module circuit.
The communication circuit comprises a CAN bus communication circuit and an RS485 communication circuit which are connected with the control module circuit.
The input detection circuit further comprises a ground detection circuit; the control module circuit is connected with the alternating current input circuit through the grounding detection circuit, and the control module circuit detects whether the alternating current input circuit is reliably grounded through the grounding detection circuit.
The grounding detection circuit comprises a primary voltage amplification circuit and a secondary voltage amplification circuit, wherein two input ends of the primary voltage amplification circuit are respectively connected with a zero line input end and a ground wire input end of the alternating current input circuit, and an output end of the primary voltage amplification circuit is connected with the control module circuit through the secondary voltage amplification circuit.
The input voltage detection circuit comprises a fire zero voltage detection circuit for detecting voltage between a fire wire input end and a zero line input end of the alternating current input circuit, wherein the two input ends of the fire zero voltage detection circuit are respectively connected with the fire wire input end and the zero line input end of the alternating current input circuit, and the output end of the fire zero voltage detection circuit is connected with the control module circuit.
The zero-live wire reverse connection detection circuit comprises a live voltage detection circuit for detecting the voltage between a live wire input end and a ground wire input end of the alternating current input circuit and a zero-ground voltage detection circuit for detecting the voltage between a zero wire input end and a ground wire input end of the alternating current input circuit; the two input ends of the fire-ground voltage detection circuit are respectively connected with the fire wire input end and the ground wire input end of the alternating current input circuit, and the output end of the fire-ground voltage detection circuit is connected with the control module circuit; the two input ends of the zero-ground voltage detection circuit are respectively connected with the zero-line input end and the ground wire input end of the alternating-current input circuit, and the output end of the zero-ground voltage detection circuit is connected with the control module circuit.
The intelligent distribution box further comprises an insulation detection circuit; the control module circuit is connected with the alternating current input circuit through the insulation detection circuit, and the control module circuit detects whether insulation damage occurs to the circuit through the insulation detection circuit.
The intelligent distribution box further comprises an external control circuit connected with the control module circuit; the external control circuit comprises an isolating switch and a connecting terminal, the isolating switch is a relay or an optocoupler, the input side of the isolating switch is connected with the control module circuit, and the output side of the isolating switch is connected with the connecting terminal.
After the scheme is adopted, the invention has the following characteristics:
1. the control module circuit detects whether the input voltage, the input frequency and the zero line of the alternating current input circuit are reversely connected through the input voltage detection circuit, the input frequency detection circuit and the zero line reverse connection detection circuit respectively, so that the control module circuit can detect whether the input voltage and the input frequency of the alternating current input circuit are normal and whether the zero line of the alternating current input circuit is reversely connected, and the control module circuit also controls the state indication circuit to indicate whether the input voltage and the input frequency of the alternating current input circuit are in a normal input range and whether the zero line of the alternating current input circuit is reversely connected; therefore, a user can visually confirm whether the intelligent distribution box is safe to be connected with the alternating current of the inverter or the alternating current power grid or not by checking the state indicating circuit, and the electricity utilization safety of the user is improved;
2. the control module circuit detects whether the alternating current input circuit is reliably grounded through the grounding detection circuit, and meanwhile, the control module circuit also controls the state indication circuit to indicate whether the alternating current input circuit is reliably grounded; whether the alternating current input circuit is reversely connected and reliably grounded influences whether the input leakage protection switch can work normally or not, so that people can know whether the alternating current input circuit is reversely connected and reliably grounded or not by checking the state indicating circuit, and further know whether the input leakage protection switch can work normally or not, and the electricity utilization safety of a user is improved;
3. the control module circuit detects whether the circuit is damaged by insulation through the insulation detection circuit, and alarms a user when the circuit is damaged by insulation, so that the electricity utilization safety of the user is improved;
4. the intelligent distribution box can communicate with a driving computer and a display screen of a motor home through a communication circuit; the control module circuit can display whether the input voltage and the input frequency of the alternating current input circuit are in a normal input range, whether the zero and the live wire of the alternating current input circuit are reversely connected, whether the alternating current input circuit is reliably grounded and whether insulation damage occurs to a circuit or not through the display screen of the motor home, so that a user can check more conveniently;
5. the invention can carry out intelligent on-off control on each alternating current output circuit, thereby reasonably distributing electricity and ensuring the electricity demand of users.
Drawings
FIG. 1 is a schematic block diagram of a circuit of the present invention;
FIG. 2 is a schematic circuit diagram of an AC output circuit according to the present invention;
FIG. 3 is a schematic circuit diagram of an input detection circuit of the present invention;
FIG. 4 is a schematic circuit diagram of a control module circuit of the present invention;
FIG. 5 is a schematic circuit diagram of a status indication circuit of the present invention;
FIG. 6 is a schematic circuit diagram of a control power circuit of the present invention;
FIG. 7 is a schematic circuit diagram of an external control circuit of the present invention;
FIG. 8 is a schematic circuit diagram of a communication circuit of the present invention;
FIG. 9 is a schematic circuit diagram of a current sampling circuit of the present invention;
FIG. 10 is a schematic circuit diagram of an insulation detection circuit of the present invention;
description of the reference numerals:
the ac input circuit 1 is provided with a power supply,
the ac output circuit 2, the first ac output circuit 201, the second ac output circuit 202, the third ac output circuit 203, the fourth ac output circuit 204, the fifth ac output circuit 205, the sixth ac output circuit 206,
an input detection circuit 3, an input voltage detection circuit 301, a fire zero voltage detection circuit 3011, an input frequency detection circuit 302, a zero fire wire reverse connection detection circuit 303, a fire ground voltage detection circuit 3031, a zero ground voltage detection circuit 3032, a ground detection circuit 304, a primary voltage amplification circuit 3041, a secondary voltage amplification circuit 3042,
a control module circuit 4,
The status indication circuit 5 is provided with a status indication circuit,
the power supply circuit 6 is controlled so that,
the inverter (7) is provided with a power source,
the power grid connection terminals 8,
the input leakage protection switch 9 is provided,
the insulation detection circuit 10 is configured to detect,
an external control circuit 11,
the communication circuit 12, can bus communication circuit 1201, rs485 communication circuit 1202,
the current sampling circuit 13, the first current sampling circuit 1301, the second current sampling circuit 1302, the third current sampling circuit 1303, the fourth current sampling circuit 1304, the fifth current sampling circuit 1305, and the sixth current sampling circuit 1306.
Detailed Description
In order to further explain the technical scheme of the invention, the invention is explained in detail by specific examples.
As shown in fig. 1 to 10, the present invention discloses an intelligent distribution box, which comprises an ac input circuit 1, an ac output circuit 2, an input detection circuit 3, a control module circuit 4, a status indication circuit 5 and a control power circuit 6; the input end of the alternating current input circuit 1 is connected with an inverter 7 and a power grid connecting terminal 8 for connecting an alternating current power grid; the number of the alternating current output circuits 2 is at least one, the alternating current output circuits 2 are used for outputting alternating current, and the input end of each alternating current output circuit 2 is connected with the output end of the alternating current input circuit 1 through an input leakage protection switch 9; the input detection circuit 3 comprises an input voltage detection circuit 301, an input frequency detection circuit 302 and a zero-live wire reverse connection detection circuit 303; the control module circuit 4 may be a single chip microcomputer circuit, the control module circuit 4 is connected to the ac input circuit 1 through the input voltage detection circuit 301, the input frequency detection circuit 302 and the live wire reverse connection detection circuit 303, and the control module circuit 4 detects whether the input voltage, the input frequency and the live wire of the ac input circuit 1 are reversely connected through the input voltage detection circuit 301, the input frequency detection circuit 302 and the live wire reverse connection detection circuit 303; the state indicating circuit 5 is connected with the control module circuit 4, and the control module circuit 4 controls the state indicating circuit 5 to indicate whether the input voltage and the input frequency of the alternating current input circuit 1 are in a normal input range or not and whether the zero line and the fire line of the alternating current input circuit 1 are reversely connected or not; the control power supply circuit 6 is connected with the alternating current input circuit 1, the input detection circuit 3, the control module circuit 4 and the state indicating circuit 5, and the control power supply circuit 5 is used for providing working power supply for the input detection circuit 3, the control module circuit 4 and the state indicating circuit 5.
In the embodiment of the present invention, the control module circuit 4 of the present invention detects whether the input voltage, the input frequency and the zero line of the ac input circuit 1 are reversely connected through the input voltage detection circuit 301, the input frequency detection circuit 302 and the zero line reverse connection detection circuit 303, respectively, so that the control module circuit 4 can detect whether the input voltage and the input frequency of the ac input circuit 1 are normal and whether the zero line of the ac input circuit 1 is reversely connected, and the control module circuit 4 also controls the status indication circuit 5 to indicate whether the input voltage and the input frequency of the ac input circuit 1 are in the normal input range and whether the zero line of the ac input circuit 1 is reversely connected; therefore, a user can visually confirm whether the alternating current of the intelligent distribution box connected to the inverter 7 or the alternating current power grid is safe or not by checking the state indicating circuit 5, and the electricity utilization safety of the user is improved.
In an embodiment of the present invention, the input voltage detection circuit 301 may include a fire zero voltage detection circuit 3011 for detecting a voltage between a fire wire input terminal and a zero line input terminal of the ac input circuit 1, two input terminals of the fire zero voltage detection circuit 3011 are respectively connected to the fire wire input terminal and the zero line input terminal of the ac input circuit 1, and an output terminal of the fire zero voltage detection circuit 3011 is connected to the control module circuit 4; the control module circuit 4 detects the voltage between the live wire input terminal and the neutral wire input terminal of the ac input circuit 1 by the live zero voltage detection circuit 3011 to obtain the input voltage of the ac input circuit 1.
In the embodiment of the present invention, the neutral-to-live reverse connection detection circuit 303 includes a neutral voltage detection circuit 3031 for detecting a voltage between a live input terminal and a ground input terminal of the ac input circuit 1, and a neutral voltage detection circuit 3032 for detecting a voltage between a neutral input terminal and a ground input terminal of the ac input circuit 1; two input ends of the fire-ground voltage detection circuit 3031 are respectively connected with a fire wire input end and a ground wire input end of the alternating current input circuit 1, and an output end of the fire-ground voltage detection circuit 3031 is connected with the control module circuit 4; the two input ends of the zero-ground voltage detection circuit 3032 are respectively connected with the zero line input end and the ground wire input end of the alternating current input circuit 1, and the output end of the zero-ground voltage detection circuit 3032 is connected with the control module circuit 4. The control module circuit 4 detects the voltage between the live wire input end and the ground wire input end of the alternating current input circuit 1 and the voltage between the neutral wire input end and the ground wire input end of the alternating current input circuit 1 through the live wire voltage detection circuit 3031 and the ground wire voltage detection circuit 3032, and then the control module circuit 4 judges whether the live wire of the alternating current input circuit 1 is reversely connected according to the voltage value between the live wire input end and the ground wire input end of the alternating current input circuit 1, the voltage value between the neutral wire input end and the ground wire input end of the alternating current input circuit 1 and the difference between the voltage between the live wire input end and the ground wire input end of the alternating current input circuit 1; when the voltage value between the live wire input terminal and the ground wire input terminal of the ac input circuit 1 is equal to or less than 0.2 times the neutral voltage of the ac input circuit 1, the voltage value between the live wire input terminal and the ground wire input terminal of the ac input circuit 1 is equal to or more than 10V, and the difference between the voltage between the neutral wire input terminal and the ground wire input terminal of the ac input circuit 1 and the voltage between the live wire input terminal and the ground wire input terminal of the ac input circuit 1 is equal to or more than 0.65 times the neutral voltage of the ac input circuit 1, the control module circuit 4 judges that the neutral wire and the live wire of the ac input circuit 1 are reversely connected.
In the embodiment of the present invention, the input end of the input frequency detection circuit 302 is connected to an amplified signal of the fire zero voltage detection circuit 3011, the amplified signal is compared with a reference voltage by a comparator, and then a square wave is output to the connection control module circuit 4, and the control module circuit 4 correspondingly obtains the input frequency of the ac input circuit 1 through the frequency of the square wave.
In an embodiment of the present invention, the input detection circuit 3 further includes a ground detection circuit 304; the control module circuit 4 is connected with the alternating current input circuit 1 through the grounding detection circuit 304, the control module circuit 4 detects whether the alternating current input circuit 1 is reliably grounded through the grounding detection circuit 304, and meanwhile, the control module circuit 4 also controls the state indication circuit 5 to indicate whether the alternating current input circuit 1 is reliably grounded; whether the alternating current input circuit 1 is reversely connected and reliably grounded influences whether the input leakage protection switch 9 can work normally or not, so that people know whether the alternating current input circuit 1 is reversely connected and reliably grounded or not by checking the state indicating circuit 5, and further know whether the input leakage protection switch 9 can work normally or not, and the electricity utilization safety of a user is improved. The ground detection circuit 304 includes a first-stage voltage amplification circuit 3041 and a second-stage voltage amplification circuit 3042, two input ends of the first-stage voltage amplification circuit 3041 are respectively connected to a zero line input end and a ground line input end of the ac input circuit 1, an output end of the first-stage voltage amplification circuit 3041 is connected to the control module circuit 4 through the second-stage voltage amplification circuit 3042, the control module circuit 4 detects a voltage between a voltage live wire input end and a voltage zero line input end between the zero line input end and the ground line input end of the ac input circuit 1 through the ground detection circuit 304, and if the voltage between the zero line input end and the ground line input end of the ac input circuit 1 is greater than 10V, the control module circuit 4 determines that the ac input circuit 1 is not reliably grounded.
In an embodiment of the present invention, the intelligent distribution box of the present invention further comprises an insulation detection circuit 10; the control module circuit 4 is connected with the alternating current input circuit 1 through the insulation detection circuit 10, and the control module circuit 4 detects whether insulation damage occurs to a circuit through the insulation detection circuit 10; when the line is damaged by insulation, the leakage problem can be generated, and if the leakage current generated by the line due to the damage of insulation is less than 30mA, the input leakage protection switch 9 can not perform leakage protection at the moment, but the leakage current can cause a human body to feel the stabbing pain of electric shock, even the human body is continuously shocked and can not get rid of; the control module circuit 4 detects whether the circuit is damaged by insulation through the insulation detection circuit 10, and when the circuit is damaged by insulation, the control module circuit 4 alarms a user, so that the electricity utilization safety of the user is improved; the control module circuit 4 can instruct whether insulation damage occurs to the detection circuit through the control state indicating circuit 5, so as to remind a user. When one of the insulation resistance values of the live wire input end, the zero wire input end and the ground wire input end of the alternating current input circuit 1 is detected to be smaller than 1MΩ, the insulation detection circuit 10 judges that the line insulation is damaged and outputs a corresponding signal to the control module circuit 4, so that the control module circuit 4 can acquire the line insulation damage; when the input end of the alternating current input circuit 1 is connected with alternating current output by an alternating current power grid, the invention is in an alternating current power grid power supply mode, the insulation detection circuit 10 is closed, and the invention realizes protection by a leakage protection switch.
In an embodiment of the present invention, the intelligent distribution box of the present invention further comprises an external control circuit 11 connected to the control module circuit 4; the external control circuit 11 comprises an isolating switch and a connecting terminal, wherein the input side of the isolating switch is connected with the control module circuit, and the output side of the isolating switch is connected with the connecting terminal; the intelligent distribution box can control on-off of an external device through the pair of external control circuits 11; the isolating switch can be a relay or an optocoupler, and the connecting terminal can be a dry contact.
In the embodiment of the invention, the intelligent distribution box further comprises a communication circuit 12 connected with the control module circuit 4, wherein the control module circuit 4 can communicate with a driving computer and a display screen of the caravan through the communication circuit 12; the control module circuit 4 can display whether the input voltage and the input frequency of the alternating current input circuit 1 are in a normal input range, whether the zero and the live wires of the alternating current input circuit 1 are reversely connected, whether the alternating current input circuit 1 is reliably grounded and whether insulation damage occurs to a circuit or not through a display screen of the motor home, so that a user can check more conveniently; the control module circuit 4 can acquire the electric quantity of the storage battery of the motor home through a driving computer of the motor home and know whether the motor home is connected with an external alternating current power grid. The communication circuit 12 may include a CAN bus communication circuit 1201 and an RS485 communication circuit 1202 connected to the control module circuit 4.
In the embodiment of the invention, each alternating current output circuit 2 is provided with a current transformer, and the input side of the current transformer of each alternating current output circuit 2 is connected in series with the live wire output end of the alternating current output circuit 2; and the output side of the current transformer of each alternating current output circuit 2 is connected with the control module circuit 4 through a current sampling circuit 13; thus, the control module circuit 4 can detect the output current of each alternating current output circuit 2, and further obtain the output power of each alternating current output circuit 2; each ac output circuit 2 is provided with an output switch circuit for controlling whether the ac output circuit is output or not, the output switch circuit can be a relay switch circuit, the control end of the output switch circuit of each ac output circuit 2 is connected with a control module circuit 4, and the control module circuit 4 controls the on-off state of the output switch circuit to control whether the ac output circuit 2 is output or not. The status indication circuit 5 may indicate on-off of each ac output circuit 2.
In the embodiment of the invention, the intelligent distribution box can set the maximum total input power of the intelligent distribution box in a direct current inversion power supply mode and an alternating current power grid power supply mode according to rated currents of the vehicle-mounted inverter and the input leakage protection switch, and simultaneously set different power utilization priorities and maximum power utilization for each alternating current output circuit 2; meanwhile, the control module circuit 4 performs intelligent regulation and control on each alternating current output circuit 2 through each output switch circuit, so that the electricity utilization safety and the user demand of a user are ensured.
In the embodiment of the invention, when the intelligent distribution box is in a direct current inversion power supply mode, the control module circuit 4 intelligently controls the output switch circuits of all the alternating current output circuits 2, so that the total power output by all the alternating current output circuits 2 is ensured to be lower than the maximum set total input power when the intelligent distribution box is in the direct current inversion power supply mode, and the power utilization is ensured to be continuous, reliable and safe; meanwhile, the control module circuit 4 ensures that the alternating current output circuit 2 with high electricity utilization priority outputs alternating current. In addition, in the direct current inversion power supply mode, when the battery capacity of the motor home is lower than a set threshold value, the control module circuit 4 can turn off the alternating current output circuits 2 in sequence according to the setting of a user, so that the power consumption requirement of the user is ensured.
In the embodiment of the invention, when the intelligent distribution box is in the AC power grid power supply mode, the control module circuit 4 intelligently controls the output switch circuits of all the AC output circuits 2, so that the total power output by all the AC output circuits 2 is ensured to be lower than the maximum set total input power when the intelligent distribution box is in the AC power grid mode, and the power utilization is ensured to be continuous, reliable and safe; meanwhile, the control module circuit 4 ensures that the alternating current output circuit 2 with high electricity utilization priority outputs alternating current.
In the embodiment of the invention, when the intelligent distribution box is in the ac power grid power supply mode or the dc inversion power supply mode, the control module circuit 4 detects the output current of each ac output circuit 2 to obtain the output power of each ac output circuit 2, if the output power of a certain ac output circuit 2 is greater than the maximum use power set by the ac output circuit 2, the control module circuit 4 controls the output switch circuit of the ac output circuit 2 to be turned off so that the ac output circuit 2 stops outputting, and the user is prevented from erroneously accessing an electrical load which does not meet the safety of power consumption. In addition, the invention can set the use state of the AC output circuit 2 according to different electric appliances connected with different AC output circuits 2; for example, the control module circuit 4 sets a certain ac output circuit 2 to output ac power to an electric appliance connected to the ac output circuit 2 for a selected period of time, thereby controlling the electric appliance connected to the ac output circuit 2 to operate at a timing.
In the embodiment of the invention, the intelligent distribution box is provided with six alternating current output circuits 2; the power utilization priorities of the first ac output circuit 201, the second ac output circuit 202, the third ac output circuit 203, the fourth ac output circuit 204, and the fifth ac output circuit 205 are sequentially reduced, and the power utilization priority of the sixth ac output circuit 206 may be set to be the highest power utilization priority or the lowest power utilization priority according to the user's needs; the first ac output circuit 201 has a first current transformer and a first output switch circuit 2011, the first current transformer is connected with the control module circuit 4 through the first current sampling circuit 1301, the control end of the first output switch circuit 2011 is connected with the control module circuit 4, and the output of the first ac output circuit 201 can be connected with a small load socket to supply power to small load devices such as a notebook, a desk lamp, a vehicle-mounted refrigerator and the like; the second ac output circuit 202 has a second current transformer and a second output switch circuit 2021, the second current transformer is connected to the control module circuit 4 through the second current sampling circuit 1302, the control end of the second output switch circuit 2021 is connected to the control module circuit 4, and the output of the second ac output circuit 202 can be connected to an air conditioner to supply power to the air conditioner; the third ac output circuit 203 has a third current transformer and a third output switch circuit 2031, the third current transformer is connected to the control module circuit 4 through the third current sampling circuit 1303, the control end of the third output switch circuit 2031 is connected to the control module circuit 4, and the output of the third ac output circuit 203 can be connected to the high-power induction cooker to supply power to the high-power induction cooker; the fourth ac output circuit 204 has a fourth current transformer and a fourth output switch circuit 2041, the fourth current transformer is connected to the control module circuit 4 through the fourth current sampling circuit 1304, the control end of the fourth output switch circuit 2041 is connected to the control module circuit 4, and the output of the fourth ac output circuit 204 can be connected to the microwave oven and the low-power induction cooker to supply power to the microwave oven and the low-power induction cooker; the fifth ac output circuit 205 has a fifth current transformer and a fifth output switch circuit 2051, the fifth current transformer is connected to the control module circuit 4 through the fifth current sampling circuit 1305, the control end of the fifth output switch circuit 2051 is connected to the control module circuit 4, and the output of the fifth ac output circuit 205 can be connected to a water heater to supply power to the water heater; the sixth ac output circuit 206 has a sixth current transformer and a sixth output switch circuit 2061, the sixth current transformer is connected to the control module circuit 4 through the sixth current sampling circuit 1306, the control terminal of the sixth output switch circuit 2061 is connected to the control module circuit 4, and the output of the sixth ac output circuit 206 can be connected to a corresponding electric appliance according to the needs of the user.
In the embodiment of the invention, the status indication circuit 5 can indicate whether the input voltage and the input frequency of the ac input circuit 1 are normal, whether the zero line and the fire line of the ac input circuit 1 are reversely connected, whether the ac input circuit 1 is reliably grounded and the on-off state of each ac output circuit 2 through the LED lamp; the LED lamps LED2 to LED7 are used for indicating the on-off of the six alternating current output circuits 2, the LED lamp LED8 is used for indicating whether the zero line and the fire line of the alternating current input circuit 1 are reversely connected, the LED lamp LED9 is used for indicating whether the alternating current input circuit 1 is reliably grounded, and the LED lamp LED10 is used for indicating whether the input voltage and the input frequency of the alternating current input circuit 1 are in a normal input range.
The above examples and drawings are not intended to limit the form or form of the present invention, and any suitable variations or modifications thereof by those skilled in the art should be construed as not departing from the scope of the present invention.
Claims (10)
1. An intelligent distribution box, its characterized in that: the device comprises an alternating current input circuit, an alternating current output circuit, an input detection circuit, a control module circuit, a state indication circuit and a control power supply circuit;
the alternating current input circuit is used for accessing alternating current;
the number of the alternating current output circuits is at least one, the alternating current output circuits are used for outputting alternating current, and the input ends of the alternating current output circuits are connected with the output ends of the alternating current input circuits through input leakage protection switches;
the input detection circuit comprises an input voltage detection circuit, an input frequency detection circuit and a zero-live wire reverse connection detection circuit;
the control module circuit is connected with the alternating current input circuit through the input voltage detection circuit, the input frequency detection circuit and the zero-live wire reverse connection detection circuit, and is used for detecting whether the input voltage, the input frequency and the zero-live wire of the alternating current input circuit are in reverse connection or not respectively;
the state indicating circuit is connected with the control module circuit, and the control module circuit controls the state indicating circuit to indicate whether the input voltage and the input frequency of the alternating current input circuit are in a normal input range or not and whether the zero and the fire wire of the alternating current input circuit are reversely connected or not;
the control power supply circuit is connected with the alternating current input circuit, the input detection circuit, the control module circuit and the state indication circuit and is used for providing working power supply for the input detection circuit, the control module circuit and the state indication circuit.
2. An intelligent distribution box as set forth in claim 1, wherein: each alternating current output circuit is provided with a current transformer, and the input side of the current transformer of each alternating current output circuit is connected with the live wire output end of the alternating current output circuit in series; the output side of the current transformer of each alternating current output circuit is connected with the control module circuit through a current sampling circuit;
each alternating current output circuit is provided with an output switch circuit for controlling whether the alternating current output circuit is output or not, and the control end of the output switch circuit of each alternating current output circuit is connected with the control module circuit and the control module circuit controls the on-off of the output switch circuit.
3. An intelligent distribution box as set forth in claim 1, wherein: and a communication circuit connected with the control module circuit.
4. An intelligent distribution box as set forth in claim 3, wherein: the communication circuit comprises a CAN bus communication circuit and an RS485 communication circuit which are connected with the control module circuit.
5. An intelligent distribution box as set forth in claim 1, wherein: the input detection circuit further comprises a ground detection circuit; the control module circuit is connected with the alternating current input circuit through the grounding detection circuit, and the control module circuit detects whether the alternating current input circuit is reliably grounded through the grounding detection circuit.
6. An intelligent distribution box as set forth in claim 5, wherein: the grounding detection circuit comprises a primary voltage amplification circuit and a secondary voltage amplification circuit, wherein two input ends of the primary voltage amplification circuit are respectively connected with a zero line input end and a ground wire input end of the alternating current input circuit, and an output end of the primary voltage amplification circuit is connected with the control module circuit through the secondary voltage amplification circuit.
7. An intelligent distribution box as set forth in claim 1, wherein: the input voltage detection circuit comprises a fire zero voltage detection circuit for detecting voltage between a fire wire input end and a zero line input end of the alternating current input circuit, wherein the two input ends of the fire zero voltage detection circuit are respectively connected with the fire wire input end and the zero line input end of the alternating current input circuit, and the output end of the fire zero voltage detection circuit is connected with the control module circuit.
8. An intelligent distribution box as set forth in claim 1, wherein: the zero-live wire reverse connection detection circuit comprises a live voltage detection circuit for detecting the voltage between a live wire input end and a ground wire input end of the alternating current input circuit and a zero-ground voltage detection circuit for detecting the voltage between a zero wire input end and a ground wire input end of the alternating current input circuit; the two input ends of the fire-ground voltage detection circuit are respectively connected with the fire wire input end and the ground wire input end of the alternating current input circuit, and the output end of the fire-ground voltage detection circuit is connected with the control module circuit; the two input ends of the zero-ground voltage detection circuit are respectively connected with the zero-line input end and the ground wire input end of the alternating-current input circuit, and the output end of the zero-ground voltage detection circuit is connected with the control module circuit.
9. An intelligent distribution box as set forth in claim 1, wherein: the insulation detection circuit is also included; the control module circuit is connected with the alternating current input circuit through the insulation detection circuit, and the control module circuit detects whether insulation damage occurs to the circuit through the insulation detection circuit.
10. An intelligent distribution box as set forth in claim 1, wherein: the control module is connected with the control circuit; the external control circuit comprises an isolating switch and a connecting terminal, the isolating switch is a relay or an optocoupler, the input side of the isolating switch is connected with the control module circuit, and the output side of the isolating switch is connected with the connecting terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310868773.0A CN116799799A (en) | 2023-07-14 | 2023-07-14 | Intelligent distribution box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310868773.0A CN116799799A (en) | 2023-07-14 | 2023-07-14 | Intelligent distribution box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116799799A true CN116799799A (en) | 2023-09-22 |
Family
ID=88036384
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310868773.0A Pending CN116799799A (en) | 2023-07-14 | 2023-07-14 | Intelligent distribution box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116799799A (en) |
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2023
- 2023-07-14 CN CN202310868773.0A patent/CN116799799A/en active Pending
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