CN210534559U - Circuit board layout structure of direct current switch device - Google Patents
Circuit board layout structure of direct current switch device Download PDFInfo
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- CN210534559U CN210534559U CN201921798431.1U CN201921798431U CN210534559U CN 210534559 U CN210534559 U CN 210534559U CN 201921798431 U CN201921798431 U CN 201921798431U CN 210534559 U CN210534559 U CN 210534559U
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Abstract
The utility model provides a circuit board layout structure of a direct current switch device, which comprises a first circuit board and a second circuit board; the first circuit board is provided with at least one or more parallel switch channel layout areas and a first connector; the second circuit board is provided with a control unit and a second connector which is connected with the first connector in a matching way; the output signal of the control unit is transmitted to the first circuit board through the first pin of the first connector and the first pin of the second connector to control the on or off of the switch channel. According to the direct-current switch device, the control unit in the weak current field is arranged on the second circuit board, the switch channel in the strong current field is arranged on the first circuit board, the separation of weak current and strong current is realized, the induced electromagnetic field of the switch channel is prevented from being coupled into the control unit to interfere the normal operation of the control unit, and the reliability of the direct-current switch device is improved.
Description
Technical Field
The utility model relates to a circuit board layout field, concretely relates to direct current switch device's circuit board layout structure.
Background
In a communication base station, due to different requirements of an operator service, the equipment of the operator needs to be powered on or powered off by dc at intervals, for example, the dc voltage is 48V, and the current is 50A, 120A or more.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects existing in the prior art, the utility model aims to provide a circuit board layout structure of a direct current switch device.
In order to achieve the above object of the present invention, the present invention provides a circuit board layout structure of a dc switch device, which includes a first circuit board and a second circuit board;
the first circuit board is provided with at least one or more parallel switch channel layout areas and a first connector;
the second circuit board is provided with a control unit and a second connector which is connected with the first connector in a matching way;
the output signal of the control unit is transmitted to the first circuit board through the first pin of the first connector and the first pin of the second connector to control the on or off of the switch channel.
The beneficial effects of the above technical scheme are: according to the direct-current switch device, the control unit in the weak current field is arranged on the second circuit board, the switch channel in the strong current field is arranged on the first circuit board, the separation of weak current and strong current is realized, the induced electromagnetic field of the switch channel is prevented from being coupled into the control unit to interfere the normal operation of the control unit, and the reliability of the direct-current switch device is improved.
In a preferred embodiment of the present invention, the second circuit board is perpendicular to the first circuit board, and the second circuit board is vertically disposed on the side of the first circuit board.
The beneficial effects of the above technical scheme are: the first circuit board and the second circuit board are vertically arranged, so that the occupied space can be reduced, and the miniaturization is easy to realize.
In a preferred embodiment of the present invention, the first connector is disposed at a side of the first circuit board; the second connector is arranged on the side edge of the second circuit board.
The beneficial effects of the above technical scheme are: the first connector and the second connector are convenient to connect.
In a preferred embodiment of the present invention, the specific layout structure of the first circuit board is:
the middle part of each switch channel layout area is a switch subarea, the lower end of each switch channel layout area is an input subarea, the upper end of each switch subarea is correspondingly provided with an arc extinguishing device subarea, and the upper end of each arc extinguishing device subarea is correspondingly provided with an output subarea;
an input terminal of an external direct-current power supply is arranged in the input subarea, an output terminal of an external direct-current load is arranged in the output subarea, a switch connected in series in a connecting passage of the input terminal and the output terminal is arranged in the switch subarea, and arc extinguishing devices connected in parallel at two ends of the switch are arranged in the arc extinguishing device subarea;
the specific layout structure of the first circuit board is either:
the middle part of each switch channel layout area is a switch sub-area and an arc extinguishing device sub-area which are arranged in parallel, the upper ends of the switch channel layout area and the arc extinguishing device sub-area are input sub-areas, and the lower ends of the switch channel layout area and the arc extinguishing device sub-area are correspondingly provided with output sub-areas;
the input subregion is internally provided with an input terminal externally connected with a direct current power supply, the output subregion is internally provided with an output terminal externally connected with a direct current load, the switch subregion is internally provided with a switch connected in series in a connecting passage of the input terminal and the output terminal, and the sub-region of the arc extinguishing device is internally provided with a plurality of arc extinguishing devices connected in parallel at two ends of the switch.
The beneficial effects of the above technical scheme are: the switch channel layout area is compact and reasonable in layout, the layout enables the large direct current flow path to be a straight line, the large direct current wiring length is shortest, wiring impedance is minimum, and circulation loss is minimum. In addition, each switch channel realizes the electrification and the power-off of an external direct current load through the switch in the input terminal and the output terminal connecting passage, and reduces the damage of electric arcs generated in the process of electrification and power-off to the control switch contact through the arc extinguishing device.
In a preferred embodiment of the present invention, the switch has a manual control end and an electric control end, and the electric control end is connected to the output end of the control unit through the first pin of the second connector and the first pin of the first connector.
The beneficial effects of the above technical scheme are: only one switch element is used, the power-on and power-off of the external direct current load can be controlled manually and electrically, the structure is simple, and the cost is further reduced.
In a preferred embodiment of the present invention, a relay and a driving circuit are further disposed in each switch channel layout region or on a side of the first circuit board away from the switch channel layout region;
the driving circuit is arranged in a power supply loop of the relay coil, a power supply end of the driving circuit is connected with a power supply end, an output end of the driving circuit is connected with a power supply end of the coil, and a control end of the driving circuit is connected with an output end of the control unit;
the contact of the relay is connected in series in a connecting passage of the input terminal and the output terminal;
and the contact of the relay is also linked with the corresponding manual control end.
The beneficial effects of the above technical scheme are: a hardware structure of a switch is disclosed, which can effectively and safely control the power-on or power-off of a driving circuit to an external direct current load through a weak current signal.
In a preferred embodiment of the present invention, an electrical parameter measuring unit is further disposed in at least one switch channel layout area;
the output end of the electrical parameter measuring unit is connected with the input end of the display unit and/or the storage unit on the second circuit board through a second pin of the second connector and a second pin of the first connector;
and/or an overcurrent protection unit which is connected in series in the corresponding switch channel is also arranged in the layout area of at least one switch channel;
and/or a lightning protector is arranged in the input sub-area and close to the input terminal;
and/or a lightning protection device is arranged in the output sub-area and close to the output terminal.
The beneficial effects of the above technical scheme are: the power utilization condition of the external load in each switch channel is monitored, so that the power utilization control is facilitated; each switch channel is subjected to overcurrent protection, and devices on the switch channels are prevented from being damaged when a load is overloaded or short-circuited; through setting up the lightning protection device for direct current switching device has the lightning protection effect, avoids damaging the thunderbolt and damages or the trouble, has improved security and the reliability of using at communication base station.
In a preferred embodiment of the present invention, the control unit includes one or more signal receiving units, and an output end of the signal receiving unit is connected to the electric control end of the switch through the first pin of the second connector and the first pin of the first connector.
The beneficial effects of the above technical scheme are: the on-off of the switch is controlled by the external signal received by the signal receiving unit, the circuit structure is simple, and the cost is low.
In a preferred embodiment of the present invention, the signal receiving unit includes a processor, and a triggering unit and/or a wired communication signal receiving module for receiving an output signal of the external sensor;
the first input end of the processor is connected with the output end of the trigger unit, the second input end of the processor is connected with the output end of the wired communication signal receiving module, and the input end of the wired communication signal receiving module is connected with the remote console in a wired communication manner;
the output end of the processor is correspondingly connected with the electric control end of the switch through the first pin of the second connector and the first pin of the first connector.
The beneficial effects of the above technical scheme are: another form of construction of a signal receiving unit is disclosed.
In a preferred embodiment of the present invention, the second circuit board is further provided with a DC/DC power supply and an external power input terminal, an input terminal of the DC/DC power supply is connected to an external power supply through the external power input terminal, and an output terminal of the DC/DC power supply circuit is connected to a power supply terminal of the control unit;
an overvoltage protection unit and/or a lightning protection device are arranged near the external power input terminal.
The beneficial effects of the above technical scheme are: the overvoltage protection unit is arranged to protect the power supply of the direct current switch device, and the phenomenon that the direct current switch device cannot work due to the fact that the DC/DC power circuit is damaged by the fact that too high voltage is input into the input end of the DC/DC power circuit is avoided. Through setting up the lightning protection device for direct current switching device has the lightning protection effect, avoids damaging the thunderbolt and damages or the trouble, has improved security and the reliability of using at communication base station.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic structural view of a preferred embodiment of the present invention;
fig. 2 is a schematic diagram of a first layout of a first circuit board according to a preferred embodiment of the present invention;
fig. 3 is a schematic diagram of a hardware configuration of a switch channel according to a preferred embodiment of the present invention;
fig. 4 is a circuit diagram of a dc switching device according to a preferred embodiment of the present invention;
fig. 5 is a schematic diagram of a hardware structure of a transmission channel according to another preferred embodiment of the present invention;
fig. 6 is a schematic diagram of a second layout of a first circuit board according to a preferred embodiment of the present invention.
Reference numerals:
1 a first circuit board; 11 a first connector; 12 an input sub-area; 13 an arc extinguishing device sub-area; 14 a switch sub-area; 15 an output sub-region; 2 a second circuit board.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.
In the description of the present invention, unless otherwise specified and limited, it is to be noted that the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, mechanically or electrically connected, or may be connected between two elements through an intermediate medium, or may be directly connected or indirectly connected, and specific meanings of the terms may be understood by those skilled in the art according to specific situations.
The utility model discloses a circuit board layout structure of a direct current switch device, which comprises a first circuit board 1 and a second circuit board 2 in a preferred embodiment as shown in figures 1 and 2;
the first circuit board 1 is provided with at least one or more parallel switch channel layout areas and a first connector 11;
the second circuit board 2 is provided with a control unit and a second connector which is matched and connected with the first connector 11;
the output signal of the control unit is transmitted to the first circuit board 1 through the first pin of the first connector 11 and the first pin of the second connector to control the on or off of the switch channel.
In the present embodiment, the first circuit board 1 and the second circuit board 2 are preferably, but not limited to, a printed circuit board, a single-layer board. On the first circuit board 1, when there are a plurality of switch channels, the switch channel layout regions are arranged in the longitudinal direction of the first circuit board 1 and in parallel with each other, as shown in fig. 2.
In the present embodiment, the first connector 11 and the second connector are preferably, but not limited to, existing connector sockets having a plurality of pins, which may be male sockets or female sockets for mating connection, respectively.
In a preferred embodiment, as shown in fig. 1, the second circuit board 2 is perpendicular to the first circuit board 1, and the second circuit board 2 is vertically disposed on a side surface of the first circuit board 1.
In the present embodiment, the second circuit board 2 may be fixed to the side surface of the first circuit board 1 by a fastener such as a screw.
In a preferred embodiment, the first connector 11 is disposed at a side of the first circuit board 1; the second connector is disposed on the side of the second circuit board 2.
In a preferred embodiment, as shown in fig. 2, the specific layout structure of the first circuit board 1 is: the middle part of each switch channel layout area is a switch subarea 14, the lower end of the switch channel layout area is an input subarea 12, the upper end of the switch subarea 14 is correspondingly provided with an arc-extinguishing device subarea 13, the upper end of the arc-extinguishing device subarea 13 is correspondingly provided with an output subarea 15,
an input terminal externally connected with a direct current power supply is arranged in the input sub-area 12, an output terminal externally connected with a direct current load is arranged in the output sub-area 15, a switch connected in series in a connecting passage of the input terminal and the output terminal is arranged in the switch sub-area 14, and arc extinguishing devices connected in parallel at two ends of the switch are arranged in the arc extinguishing device sub-area 13;
as shown in fig. 6, the specific layout structure of the first circuit board 1 is either:
the middle part of each switch channel layout area is provided with a switch subarea 14 and an arc extinguishing device subarea 13 which are arranged in parallel, the upper ends of the switch subarea and the arc extinguishing device subarea are provided with an input subarea 12, and the lower ends of the switch subarea and the arc extinguishing device subarea are correspondingly provided with an output subarea 15;
an input terminal of an external direct-current power supply is arranged in the input sub-area 12, an output terminal of an external direct-current load is arranged in the output sub-area 15, a switch connected in series in a connection path between the input terminal and the output terminal is arranged in the switch sub-area 14, a plurality of arc extinguishing devices connected in parallel at two ends of the switch 1 are arranged in the arc extinguishing device sub-area 13, for example, 3 arc extinguishing devices are arranged in fig. 6, and the contacts of the switch can bear current impact when the switch is switched on or switched off by larger current due to the plurality of arc extinguishing devices, so that the layout structure can be applied to larger current, for example, 120.
In this embodiment, the input terminal and the output terminal may be selected from the existing electrical connection socket capable of carrying a large current, for example, the carrying current is greater than 40A, and reaches 50A, 120A or even greater current; the switch can select a manual switch, or select an electric control switch, or select a combination of the manual switch and the electric control switch.
In the present embodiment, the arc extinguishing device is preferably, but not limited to, an existing arc extinguishing product, such as a DM-2 type dc arc extinguisher manufactured by great company, electronics technologies, ltd, a composite PTC thermistor manufactured by watma technologies, etc., or an RC arc extinguishing circuit is selected and connected in series through a resistor and a capacitor, and the series circuit is connected in parallel across the control switch.
In a preferred embodiment, the switch has a manual control terminal and an electric control terminal, and the electric control terminal is connected to the output terminal of the control unit via the second connector first pin and the first connector 11 first pin.
In the present embodiment, as shown in fig. 3 and fig. 5, the switch is preferably but not limited to a relay, and contacts of the relay are connected in series in a connection path of the input terminal and the output terminal, on one hand, the control unit controls the energization or the deenergization of a coil of the relay through an electric control terminal to realize the closing and the opening of the switch, and the electric control terminal may be a control terminal of a driving device connected in series in an energization loop of the coil of the relay, such as a gate of a MOS transistor, or a base of a triode; on the other hand, the manual control end is an insulated handheld part arranged on a spring piece (preferably an opening end of the spring piece) of the normally open contact, and the manual on-off of the switch is realized by pushing the handheld part to move back and forth.
In a preferred embodiment, as shown in fig. 5, a relay and a driving circuit are further provided in each switch channel layout area;
the driving circuit is arranged in a power supply loop of the relay coil, a power supply end of the driving circuit is connected with a power supply end, an output end of the driving circuit is connected with a power supply end of the coil, and a control end of the driving circuit is connected with an output end of the control unit;
the contact of the relay is connected in series in the connecting path of the input terminal and the output terminal;
the contact of the relay is also linked with the corresponding manual control end.
In this embodiment, the driving circuit is preferably, but not limited to, a triode driving circuit, a MOS transistor driving circuit, or the like.
In a preferred embodiment, as shown in fig. 5, the driving circuit includes a transistor and a first resistor;
a first end of a coil of the relay is connected with a power supply end, a second end of the coil is connected with a collector of the triode, an emitter of the triode is connected with the ground, a base of the triode is connected with a first end of a first resistor, and a second end of the first resistor is connected with an output end of the control unit or an output end of the signal receiving unit or a first output end of the processor;
the contacts of the relay are connected in series in the connection path of the input terminal and the output terminal. In a preferred embodiment, an electrical parameter measuring unit is further arranged in at least one switch channel layout area;
the output end of the electrical parameter measuring unit is connected with the input end of the display unit and/or the storage unit on the second circuit board 2 through a second pin of the second connector and a second pin of the first connector 11;
and/or an overcurrent protection unit which is connected in series in the corresponding switch channel is also arranged in the layout area of at least one switch channel;
and/or a lightning protector is arranged in the input sub-area 12 close to the input terminal;
and/or a lightning protection is provided in the output sub-area 15 close to the output terminals.
In the present embodiment, the electrical parameter measuring unit preferably includes, but is not limited to, a direct current electric energy meter, a power meter, a voltage meter, an ammeter, and the like provided in the switch channel. The direct current electric energy meter, the power meter, the voltmeter and the ammeter can all select the existing products, of course, the voltmeter can also be a resistance voltage division network, one end of the resistance voltage division network is connected with the output terminal, the other end of the resistance voltage division network is connected with the ground, and the output end of the resistance voltage division network is connected with a rear-stage circuit (such as a display unit, a processor and the like). The ammeter may be a current transformer.
In this embodiment, the display unit is preferably, but not limited to, an LCD display module or an LED display module, etc. for displaying electrical parameters of each channel, such as current, voltage, power or electricity.
In this embodiment, the overcurrent protection unit is connected in series in the switch channels, and specifically, each switch channel may be connected with one overcurrent protection unit, or several switch channels may share one overcurrent protection unit.
In the present embodiment, the overcurrent protection unit is preferably, but not limited to, a self-recovery Fuse, i.e., a positive temperature coefficient thermistor (PTC) that can be connected in series to any position of the connection path of the input terminal and the output terminal. When the current of the switch channel is normal, the self-recovery fuse is in a normal state, the resistance value is very small, and the normal work of the switch channel is not influenced. The self-healing fuse is preferably, but not limited to, a product selected as model number FSMD 1812.
In a preferred embodiment, the control unit comprises one or more signal receiving units, the output of which is connected to the electrical control terminal of the switch via the second connector first pin and the first connector 11 first pin. Here, the output of the signal receiving unit serves as the output of the control unit.
In this embodiment, when the control unit includes one signal receiving unit, the output terminal of the signal receiving unit is connected to the electrical control terminals of all the switches; when the control unit includes a plurality of signal receiving units, the output ends of the signal receiving units may be connected to the electric control ends of all the switches in a one-to-one correspondence manner, or the output ends of the signal receiving units may be connected to the electric control ends of the switches in a one-to-many manner, or the output ends of the signal receiving units may be connected to the electric control ends of the switches in a many-to-one manner.
In a preferred embodiment, the signal receiving unit is an optical signal receiving unit, or a triggering unit for receiving an output signal of an external sensor, or a wireless communication signal receiving module, or a wired communication signal receiving module.
In this embodiment, when the signal receiving unit is an optical signal receiving unit, it is preferably, but not limited to, an optoelectronic switch, which receives an external optical signal and outputs a high level signal to an electric control terminal of a switch connected thereto, so as to close the switch and power on an external dc load, and when the external optical signal cannot be received, outputs a low level signal to the electric control terminal of the switch connected thereto, so as to open the switch and power off the external dc load.
In this embodiment, when the signal receiving unit is a trigger unit for receiving the output signal of the external sensor, the trigger unit is preferably, but not limited to, a high level trigger or a rising edge trigger, and an existing product may be selected. The external sensor is preferably but not limited to an illumination sensor, when sunlight exists, a high level is output to the trigger unit, and the trigger unit outputs the high level to the electric control end of the switch connected with the trigger unit to control the corresponding direct current load to be electrified.
In this embodiment, when the signal receiving unit is a wireless communication signal receiving module, it is preferable, but not limited to, to select an existing product such as a WIFI communication module, a Zigbee communication module, a GSM communication module, an LTE communication module, or a 3G communication module, and any control pin of a modem chip in the modules is connected to an electric control end of a corresponding switch, so that on/off of each switch can be remotely controlled, and remote power-on/off control of a dc load can be realized.
In the present embodiment, when the signal receiving unit is a wired communication signal receiving module, it is preferable to select, but not limited to, existing products such as an ethernet port communication module and a serial port communication module. In a preferred embodiment, as shown in fig. 4, the signal receiving unit includes a processor, and a triggering unit and/or a wired communication signal receiving module for receiving an output signal of the external sensor;
the first input end of the processor is connected with the output end of the trigger unit, the second input end of the processor is connected with the output end of the wired communication signal receiving module, and the input end of the wired communication signal receiving module is connected with the remote console in a wired communication manner;
the output end of the processor is correspondingly connected with the electric control end of the switch through the first pin of the second connector and the first pin of the first connector 11. Here, the output of the processor serves as the output of the control unit.
In this embodiment, the processor is preferably, but not limited to, a single chip microcomputer, such as model number STM32051C8T 6; the trigger unit is preferably but not limited to an existing high-level or rising edge trigger, and the output end of the trigger is connected with the processor through an I/O pin; the wired communication signal receiving module is preferably but not limited to a 485 serial port communication module, the wired communication signal receiving module is connected and communicated with the processor through a UART serial port, and the 485 serial port communication module is connected with a 485 interface of the remote control console through a serial port line. The processor is connected with the electric control ends of the 3 switches in a one-to-one correspondence mode through the 3I/O pins.
In the present embodiment, it is preferable that the electronic device further includes an electrical parameter measuring unit provided in a connection path between at least one pair of the input terminal and the output terminal;
and/or further comprising a display unit;
and/or further comprising a data storage unit;
the output end of the electrical parameter measuring unit is respectively connected with the third input end of the processor;
the second output end of the processor is connected with the input end of the display unit, and the third output end of the processor is connected with the input end of the data storage unit.
As shown in fig. 2, the processor is connected to the display unit through PB0, PB1, and PB3 pins, connected to the data storage unit through the SPI serial port, and connected to the electrical parameter measurement units of 3 switch channels through 3 ADC pins in a one-to-one correspondence manner.
In this embodiment, it is preferable that the current operation mode of the dc switch device is displayed by the display unit, and specifically includes a manual mode and an automatic mode, where the manual mode is to manually control the on/off of each channel, and the automatic mode is to automatically control the on/off of each channel by a remote signal. In a preferred embodiment, the second circuit board 2 is further provided with a DC/DC power supply and an external power supply input terminal, an input end of the DC/DC power supply is connected with an external power supply through the external power supply input terminal, and an output end of the DC/DC power supply circuit is connected with a power supply end of the control unit;
an overvoltage protection unit and/or a lightning protection device are arranged near the external power input terminal.
In this embodiment, the DC/DC power circuit is a 48V-12V DCDC circuit, and the DCDC conversion chip MP2494 and its peripheral circuits can be selected, and the specific circuit structure can refer to the chip manual of MP2494, which is not described herein again. The external power supply may be a dc power supply outputting 48V.
In this embodiment, the overvoltage protection unit is preferably, but not limited to, a voltage dependent resistor or a TVS diode, a first terminal of the voltage dependent resistor or the TVS diode is connected to an input terminal of the DC/DC power circuit, and a second terminal of the voltage dependent resistor or the TVS diode is connected to ground, and the specific circuit principle and connection can refer to the disclosure of the website http:// www.elecfans.com/d/766764.html, and the overvoltage protection unit also has a certain lightning protection function. In this embodiment, the overvoltage protection unit preferably includes an overvoltage protection chip and a peripheral circuit thereof, the overvoltage protection chip may select LTC4367, and a specific circuit structure may refer to a technical manual of the chip, which is not described herein again. When the voltage connected to the input terminal of the DC/DC power circuit exceeds the allowable range, the LTC4367 will disconnect the external power supply from the DC/DC power circuit.
In this embodiment, the lightning protection device at the input end of the DC/DC power circuit is preferably, but not limited to, the NKP-DY-iii L-D48 lightning protection device product of kojia electric company, the lightning protection device at the output end of the DC/DC power circuit is preferably, but not limited to, the NKP-DY-IIIL-D12 lightning protection device product of kojia electric company, and the lightning protection device at the input terminal and the output terminal is preferably, but not limited to, the KDY-40-D48 lightning protection device product of kojia electric company.
In this embodiment, the lightning protection device may also select an existing dc lightning protection circuit, and the specific circuit structure may refer to a website: and the direct-current power supply lightning protection circuit disclosed by https:// wenku.baidu.com/view/3228c919964bcf84b9d57b63.html is not described herein again.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. A circuit board layout structure of a direct current switch device is characterized by comprising a first circuit board and a second circuit board;
the first circuit board is provided with at least one or more parallel switch channel layout areas and a first connector;
the second circuit board is provided with a control unit and a second connector which is connected with the first connector in a matching way;
the output signal of the control unit is transmitted to the first circuit board through the first pin of the first connector and the first pin of the second connector to control the on or off of the switch channel.
2. The circuit board layout structure of the dc switching device according to claim 1, wherein the second circuit board is perpendicular to the first circuit board, and the second circuit board is vertically disposed on a side surface of the first circuit board.
3. The circuit board layout structure of the dc switching device according to claim 1 or 2, wherein the first connector is disposed at a side of the first circuit board; the second connector is arranged on the side edge of the second circuit board.
4. The circuit board layout structure of the dc switching device according to claim 1, wherein the specific layout structure of the first circuit board is:
the middle part of each switch channel layout area is a switch subarea, the lower end of each switch channel layout area is an input subarea, the upper end of each switch subarea is correspondingly provided with an arc extinguishing device subarea, and the upper end of each arc extinguishing device subarea is correspondingly provided with an output subarea;
an input terminal of an external direct-current power supply is arranged in the input subarea, an output terminal of an external direct-current load is arranged in the output subarea, a switch connected in series in a connecting passage of the input terminal and the output terminal is arranged in the switch subarea, and arc extinguishing devices connected in parallel at two ends of the switch are arranged in the arc extinguishing device subarea;
the specific layout structure of the first circuit board is either:
the middle part of each switch channel layout area is a switch sub-area and an arc extinguishing device sub-area which are arranged in parallel, the upper ends of the switch channel layout area and the arc extinguishing device sub-area are input sub-areas, and the lower ends of the switch channel layout area and the arc extinguishing device sub-area are correspondingly provided with output sub-areas;
the input subregion is internally provided with an input terminal externally connected with a direct current power supply, the output subregion is internally provided with an output terminal externally connected with a direct current load, the switch subregion is internally provided with a switch connected in series in a connecting passage of the input terminal and the output terminal, and the sub-region of the arc extinguishing device is internally provided with a plurality of arc extinguishing devices connected in parallel at two ends of the switch.
5. The circuit board layout structure of the dc switching device according to claim 4, wherein the switch has a manual control terminal and an electric control terminal, and the electric control terminal is connected to the output terminal of the control unit through the second connector first pin and the first connector first pin.
6. The circuit board layout structure of the dc switching device according to claim 5, wherein a relay and a driving circuit are further provided in each of the switch channel layout regions or on a side of the first circuit board away from the switch channel layout region;
the driving circuit is arranged in a power supply loop of the relay coil, a power supply end of the driving circuit is connected with a power supply end, an output end of the driving circuit is connected with a power supply end of the coil, and a control end of the driving circuit is connected with an output end of the control unit;
the contact of the relay is connected in series in a connecting passage of the input terminal and the output terminal;
and the contact of the relay is also linked with the corresponding manual control end.
7. The circuit board layout structure of the dc switching device according to claim 5, wherein an electrical parameter measuring unit is further provided in at least one of the switch channel layout areas;
the output end of the electrical parameter measuring unit is connected with the input end of the display unit and/or the storage unit on the second circuit board through a second pin of the second connector and a second pin of the first connector;
and/or an overcurrent protection unit which is connected in series in the corresponding switch channel is also arranged in the layout area of at least one switch channel;
and/or a lightning protector is arranged in the input sub-area and close to the input terminal;
and/or a lightning protection device is arranged in the output sub-area and close to the output terminal.
8. The circuit board layout structure of the dc switching device according to claim 5, wherein the control unit comprises one or more signal receiving units, and the output terminals of the signal receiving units are connected to the electrical control terminals of the switches through the first pins of the second connector and the first pins of the first connector.
9. The circuit board layout structure of DC switchgear according to claim 8,
the signal receiving unit comprises a processor, a trigger unit for receiving an output signal of the external sensor and/or a wired communication signal receiving module;
the first input end of the processor is connected with the output end of the trigger unit, the second input end of the processor is connected with the output end of the wired communication signal receiving module, and the input end of the wired communication signal receiving module is connected with the remote console in a wired communication manner;
the output end of the processor is correspondingly connected with the electric control end of the switch through the first pin of the second connector and the first pin of the first connector.
10. The circuit board layout structure of the DC switching device according to claim 8, wherein the second circuit board further has a DC/DC power supply and an external power supply input terminal, an input terminal of the DC/DC power supply is connected to an external power supply through the external power supply input terminal, and an output terminal of the DC/DC power supply circuit is connected to a power supply terminal of the control unit;
an overvoltage protection unit and/or a lightning protection device are arranged near the external power input terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921798431.1U CN210534559U (en) | 2019-10-24 | 2019-10-24 | Circuit board layout structure of direct current switch device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921798431.1U CN210534559U (en) | 2019-10-24 | 2019-10-24 | Circuit board layout structure of direct current switch device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210534559U true CN210534559U (en) | 2020-05-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921798431.1U Active CN210534559U (en) | 2019-10-24 | 2019-10-24 | Circuit board layout structure of direct current switch device |
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| Country | Link |
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| CN (1) | CN210534559U (en) |
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