CN215071642U - Car as a house intelligence exchanges block terminal - Google Patents
Car as a house intelligence exchanges block terminal Download PDFInfo
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- CN215071642U CN215071642U CN202022702533.8U CN202022702533U CN215071642U CN 215071642 U CN215071642 U CN 215071642U CN 202022702533 U CN202022702533 U CN 202022702533U CN 215071642 U CN215071642 U CN 215071642U
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Abstract
The utility model provides a car as a house intelligence exchanges block terminal, include the shell and set up the control circuit in the shell, control circuit includes microprocessor, mains input is through commercial power input earth leakage protection switch, input relay connects one side of zero live wire switching relay, the opposite side of zero live wire switching relay passes through commercial power load electric leakage branch protection switch and connects the commercial power load, it exchanges the input to connect the dc-to-ac converter between zero live wire switching relay and the commercial power load electric leakage protection switch, the dc-to-ac converter exchanges output and passes through dc-to-ac converter load distribution switch and connect the inverter load, the commercial power input links to each other with microprocessor's input, input relay and zero live wire switching relay are connected to microprocessor's output. This distribution box has improved wiring and mounting means, has the integrated level height, and the installation is convenient, and the function is abundant, easy operation's advantage.
Description
Technical Field
The utility model belongs to the technical field of power equipment, concretely relates to car as a house intelligence exchanges block terminal.
Background
According to the applicant's understanding, when the car as a house is external commercial power, because commercial power side distribution is not standard, there is very big safety risk, and commercial power side distribution is not standard mainly includes three kinds of circumstances: 1. the PE protected ground is not connected; 2. PE has large protective earth resistance; 3. connecting the zero line and the live line reversely; the security risks that exist for these three cases include: 1. because PE is not grounded or grounded impedance is large, the vehicle body is charged because the leakage current of the safety Y capacitor in the alternating current electrical appliance is not provided with a discharge circuit, and people can feel numb when touching the vehicle body; 2. the zero line and the live line are reversely connected, and when a single-pole switch exists in a load loop, even if the switch is in a disconnected state, the load side is cut off by the zero line, the live line is still connected with load equipment, and safety risk exists.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that overcome prior art not enough, provide a car as a house intelligence exchanges block terminal, improve block terminal's wiring and mounting means, the integrated level is high, and it is convenient to install, reduces safe risk.
The utility model provides a car as a house intelligence alternating current distribution box, include the shell and set up the control circuit in the shell, control circuit includes microprocessor, the commercial power input passes through commercial power input earth leakage protection switch, input relay connects one side of zero live wire switching relay, zero live wire switching relay's opposite side passes through commercial power load electric leakage branch protection switch and connects the commercial power load, zero live wire switching relay and commercial power load leak between the earth leakage protection switch and be connected the dc-to-ac converter and exchange the input, the dc-to-ac converter is exchanged output and is passed through dc-to-ac converter load distribution switch and connect the dc-to-ac converter load, commercial power input links to each other with microprocessor's input, input relay and zero live wire switching relay are connected to microprocessor's output.
As a further technical scheme of the utility model, an LED display panel, a control button and a control switch are arranged on the shell, and the LED display panel is provided with an operating LED display lamp, a zero-fire reverse-connection LED display lamp, a poor-grounding LED display lamp, an abnormal-frequency LED display lamp and an over-voltage LED display lamp from top to bottom in sequence; the control button comprises a mute button and a zero fire reverse cutting button; the control switch comprises a mains supply input switch, a mains supply load switch and an inversion load switch.
Furthermore, the microprocessor is connected with an upper computer through RS485 and CAN communication units.
Further, the input relays are two normally closed relays; the zero live wire switching relay is two double-pole double-throw relays and is in normally closed electric shock by default.
Furthermore, the commercial power input leakage protection switch is a residual current operated circuit breaker, and the parameters are NXBLE-40, 1P + N, C type and 16A/30 mA; the electric leakage branch circuit protection switch of the over-mains supply load is a residual current operated circuit breaker with the parameters of NXBLE-40, 1P + N, C type and 16A/30 mA; the inverter load distribution switch is a miniature circuit breaker, and the parameters are MXB-63, 2p, C type and 16A.
Furthermore, the output end of the microprocessor is connected with the LED display panel, the control button, the buzzer and the control switch.
The utility model has the functions of power grid input high-low voltage protection, leakage protection, zero-fire reverse connection alarm, frequency abnormal alarm and poor grounding alarm; when the reverse connection of zero fire is detected, the mutual switching can be automatically or manually controlled; the microprocessor CAN communicate with an upper computer through an RS485 and CAN communication unit, upload information and perform reverse control; compared with the prior art, the distribution box has the advantages of improved wiring and installation modes, high integration level, convenience in installation, rich functions and simplicity in operation.
Drawings
Fig. 1 is a schematic circuit diagram of the present invention;
fig. 2 is a schematic view of the housing of the present invention.
Detailed Description
Please refer to fig. 1, this embodiment provides an intelligent ac distribution box for a motor home, which includes a housing and a control circuit disposed in the housing, the control circuit includes a microprocessor, the commercial power input is connected to one side of a leakage protection switch through the commercial power input, the input relay is connected to one side of a zero-live line switching relay, the other side of the zero-live line switching relay is connected to the commercial power load through a commercial power load leakage branch protection switch, an inverter ac input is connected between the zero-live line switching relay and the commercial power load leakage protection switch, the inverter ac output is connected to the inverter load through an inverter load distribution switch, the commercial power input is connected to the input end of the microprocessor, and the output end of the microprocessor is connected to the input relay and the zero-live line switching relay.
The shell is provided with an LED display panel, a control button and a control switch, and the LED display panel is sequentially provided with an operating LED display lamp, a zero-fire reverse-connection LED display lamp, a poor-grounding LED display lamp, a frequency abnormal LED display lamp and a voltage over-limit LED display lamp from top to bottom; the control button comprises a mute button and a zero fire reverse cutting button; the control switch comprises a mains supply input switch, a mains supply load switch and an inversion load switch.
The microprocessor is connected with the upper computer through RS485 and CAN communication unit communication.
The input relays are two normally closed relays; the zero live wire switching relay is two double-pole double-throw relays and is in normally closed electric shock by default.
The commercial power input electric leakage protection switch is a residual current operated circuit breaker, and the parameters are NXBLE-40, 1P + N, C type and 16A/30 mA; the electric leakage branch circuit protection switch of the over-mains supply load is a residual current operated circuit breaker with the parameters of NXBLE-40, 1P + N, C type and 16A/30 mA; the inverter load distribution switch is a miniature circuit breaker, and the parameters are MXB-63, 2p, C type and 16A.
The output end of the microprocessor is connected with the LED display panel, the control button, the buzzer and the control switch.
The electrical principle of the distribution box is as follows, RY1-RY4 is a normally closed contact under the condition of no electrification, and the default is closing and the output is immediately provided;
the microprocessor detects the input voltage of the commercial power, and when the voltage overvoltage or undervoltage condition is found, the input relay is closed to disconnect the commercial power input;
only the conditions of frequency abnormality, grounding abnormality or reverse zero-line connection and the like are detected, corresponding sound and light alarm is provided, and sound alarm can be eliminated by pressing a mute key;
when the mains supply is input into the zero line and the live line and is connected reversely, the zero line and the live line of the loop of the inverter and the mains supply load, which are provided by the distribution box, can be automatically corrected to be correct phase sequence by pressing the zero line and the live line reverse switching button.
The function of each unit of the control circuit is shown in table 1,
TABLE 1 introduction table of function and function of each unit
This intelligent detection unit of block terminal mainly detects two aspects:
1) electric energy quality detection: mains input voltage and frequency, as shown in tables 2 and 3;
2) detecting the power distribution quality: ground wire connection quality and zero live wire power distribution correctness.
TABLE 2 Mains supply input Range
TABLE 3 Mains supply input frequency Range
First, voltage detection and protection
The intelligent distribution box is powered on, the default commercial power input is normal, the commercial power input directly supplies power to the load, the load power consumption is not influenced under the condition that the intelligent distribution box fails in function, and the comparative voltage overrun is relatively low in probability. After detecting that the mains supply input voltage exceeds the protection action value, cutting off the mains supply input; and automatically recovering power supply when the protection clearing value is recovered.
During the protection period, the manual operation is not recoverable, and the controller is required to recover automatically.
When detecting that the commercial power frequency exceeds the range of the meter four, the intelligent distribution box gives an alarm, but does not cut off the commercial power input.
The mains phase is required to be selected, either when the ac input is on or off.
Detection and alarm for reverse connection of two, zero and live wire
Whether the zero fire is connected reversely is judged by detecting Vnpe (zero ground voltage), Vlpe (fire ground voltage) and Vln (fire zero voltage).
When the condition that the alternating current input zero-live wire is reversely connected is detected, a user presses the zero-live reverse switching button, and the power distribution output end can be automatically corrected to be in a correct zero-live wire connection sequence.
The grounding abnormity detection is to analyze whether the ground wire is connected or not and whether the ground wire impedance is in a normal range or not according to the voltages among the live wire, the zero line and the ground wire.
When the situation that the grounding wire input by the mains supply is not connected or the grounding impedance is not in accordance with the requirement is detected, the display panel 'grounding abnormity' indicator lamp of the intelligent distribution box is normally on, the sound is given an alarm, and the silencing button is pressed to mute.
The audible and visual alarms include normal operation, alarm and fault LED indicators and beeping alarms, as shown in table 4,
TABLE 4 audible and visual alarm List
The control button functions are shown in table 5,
TABLE 5 control button function table
The port of the communication unit is defined by 8pin car connector standard of company, in this product, main switch of pin3 and GND of pin5 are NC pins.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are given by way of illustration only, and that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. The scope of the invention is defined by the claims and their equivalents.
Claims (6)
1. The utility model provides a car as a house intelligence exchanges block terminal, its characterized in that, includes the shell and sets up the control circuit in the shell, control circuit includes microprocessor, and the commercial power input passes through commercial power input earth leakage protection switch, the one side that input relay connects zero live wire switching relay, zero live wire switching relay's opposite side passes through commercial power load electric leakage branch protection switch and connects the commercial power load, zero live wire switching relay with connect the dc-to-ac converter between the commercial power load electric leakage protection switch and exchange the input, the dc-to-ac converter exchanges output and passes through dc-to-ac converter load distribution switch and connect the dc-to-ac converter load, the commercial power input links to each other with microprocessor's input, microprocessor's output is connected input relay with zero live wire switching relay.
2. The intelligent alternating current distribution box for the motor home according to claim 1, wherein an led display panel, a control button and a control switch are arranged on the shell, and an operating led display lamp, a zero-fire reverse-connection led display lamp, a poor-grounding led display lamp, a frequency abnormal led display lamp and a voltage over-limit led display lamp are sequentially arranged on the led display panel from top to bottom; the control button comprises a mute button and a zero fire reverse cutting button; the control switch comprises a mains supply input switch, a mains supply load switch and an inversion load switch.
3. The intelligent ac distribution box of claim 1, wherein said microprocessor is communicatively connected to an upper computer through an RS485& CAN communication unit.
4. The intelligent ac distribution box of claim 1, wherein said input relays are two normally closed relays; the zero-live wire switching relay is two double-pole double-throw relays and is in normally closed electric shock by default.
5. The intelligent alternating current distribution box for motor homes according to claim 1, wherein the mains input earth leakage protection switch is a residual current operated circuit breaker with parameters of NXBLE-40, 1P + N, C type and 16A/30 mA; the protection switch of the electric leakage branch circuit of the over-mains supply load is a residual current operated circuit breaker, and the parameters are NXBLE-40, 1P + N, C type and 16A/30 mA; the inverter load distribution switch is a miniature circuit breaker, and the parameters are MXB-63, 2p, C type and 16A.
6. The intelligent AC distribution box for motor homes according to claim 1, wherein the output terminal of the microprocessor is connected with the led display board, the control button, the buzzer and the control switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022702533.8U CN215071642U (en) | 2020-11-20 | 2020-11-20 | Car as a house intelligence exchanges block terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022702533.8U CN215071642U (en) | 2020-11-20 | 2020-11-20 | Car as a house intelligence exchanges block terminal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215071642U true CN215071642U (en) | 2021-12-07 |
Family
ID=79160882
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022702533.8U Active CN215071642U (en) | 2020-11-20 | 2020-11-20 | Car as a house intelligence exchanges block terminal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215071642U (en) |
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2020
- 2020-11-20 CN CN202022702533.8U patent/CN215071642U/en active Active
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