CN208479574U - A kind of photovoltaic component terminal box rapidly switched off - Google Patents
A kind of photovoltaic component terminal box rapidly switched off Download PDFInfo
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- CN208479574U CN208479574U CN201821214214.9U CN201821214214U CN208479574U CN 208479574 U CN208479574 U CN 208479574U CN 201821214214 U CN201821214214 U CN 201821214214U CN 208479574 U CN208479574 U CN 208479574U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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Abstract
The utility model discloses the photovoltaic component terminal boxes that one kind can rapidly switch off, on the printed circuit board of terminal box, between the anode of input terminal and the anode of output end, and/or between the cathode of input terminal and the cathode of output end, the performer that one or two MOSFET is switched on or off as terminal box is set；The series resonant circuit being made of inductor, capacitor, for receiving the high-frequency signal of external application；Inductor resonance potential in series resonant circuit is transformed into the driving voltage of MOSFET with passive mode by the voltage doubling rectifing circuit being made of diode and capacitor.Independent current source and MOSFET active driving circuit is omitted in the utility model, simplify the control circuit for the photovoltaic component terminal box that can be rapidly switched off, using electronic device, simple, quantity is substantially reduced for institute, thus product cost is brought to be remarkably decreased therewith, the beneficial effect that reliability and service life are obviously improved.
Description
Technical field
The utility model relates to relevant arrangements of electric connections on a kind of photovoltaic module structure, can be quick more particularly to one kind
The photovoltaic component terminal box of shutdown.
Background technique
Under normal conditions, photovoltaic module by mechanically stacked photovoltaic cell (International Classification of Patents is numbered: H01L31/043),
Terminal box (the art is traditionally referred to as meaning " photovoltaic component terminal box "), cable and connector are constituted；Mechanically stacked
Photovoltaic cell exports its electric energy by terminal box, cable and connector, therefore photovoltaic component terminal box is photovoltaic module structure
Upper relevant arrangements of electric connection.
Photovoltaic module is the basic generator unit in photovoltaic generating system, under most of applications, several photovoltaic groups
Part connects and forms the photovoltaic module string with 300V or more high direct voltage, it is clear that uncontrollable high direct voltage becomes photovoltaic power generation
The security risk of system causes serious hindrance, even to accident treatment especially under fire, earthquake or other state of emergency
Threaten the personal safety of rescue personnel.
In order to eliminate the security risk of above-mentioned photovoltaic generating system, the different photovoltaic module wiring rapidly switched off of form
Box comes into being, and function is to disconnect the electrical connection in photovoltaic module string between each photovoltaic module, it is urgent or other
In the state of in need, the high direct voltage connected by photovoltaic module and formed can be quickly eliminated.
In the prior art, the structure for the photovoltaic component terminal box that can be rapidly switched off generally comprises box body and the intracorporal printing of box
Circuit board, and on a printed circuit between the input terminal and output end of positive or negative pole, a MOSFET (metal-oxygen is set
Compound semiconductor field effect transistor) performer that is switched on or off as terminal box；In addition, at least being wrapped on printed circuit board
Include the power supply circuit (independent current source) using DC/DC (DC/DC) transformation, using DC power line carrier system or wireless parties
The communicating circuit of formula, the MOSFET active driving circuit powered using independent current source；Wherein, the energy source of independent current source is by machinery
The photovoltaic cell of stacking provides, since the output voltage of photovoltaic cell changes with intensity of illumination, photovoltaic battery temperature, it
It is the unstable energy source of an output voltage, especially in the case where photovoltaic cell is blocked by shadow, output voltage can be bright
It is aobvious to fall；When shadow occlusion especially severe, or even the bypass diode conducting of photovoltaic cell can be triggered, at this time the energy of script
Source is likely to occur the case where polarity of voltage conversion, and conventional DC/DC translation circuit can not adapt to such extreme situation, thus design
As soon as the independent current source of high stability energy, corresponding circuit composition is complex, technical difficulty is big, device cost is high.Separately
Outside, since the unlatching of MOSFET requires driving voltage, it is therefore desirable to be equipped with a circuit and constitute complex, device cost
Relatively high MOSFET active driving circuit is met the requirements, while also to prevent driving voltage beyond MOSFET normal work
Make the technical measures of permissible value, otherwise irreversible damage will occur for MOSFET, lead to photovoltaic generating system shutdown occur
Major accident.
State Intellectual Property Office of the People's Republic of China Authorization Notice No. CN206775459U (authorized announcement date:
2017.12.19；Utility model title: a kind of cutoff device and photovoltaic module turning off system of photovoltaic module), in specification
Shown in embodiment second is that the prior art typical example.
Summary of the invention
For the independent current source of design high stability energy in the prior art, corresponding device cost height and technical difficulty
Greatly and the working condition of MOSFET active driving circuit depends critically upon the technical problems such as the performance of independent current source, this is practical
It is novel that a kind of photovoltaic component terminal box that can be rapidly switched off is provided.
The specific technical solution of the utility model is: the photovoltaic component terminal box that one kind can rapidly switch off, it is characterised in that:
On the printed circuit board of terminal box, between the anode of input terminal and the anode of output end, and/or the cathode and output end of input terminal
Cathode between, the performer that one or two MOSFET is switched on or off as terminal box is set；By inductor, capacitor
The series resonant circuit of composition receives the high-frequency signal that output port is applied by outside；Times being made of diode and capacitor
Inductor resonance potential in series resonant circuit is transformed into the driving voltage of MOSFET with passive mode by voltage rectifier.
Preferably, on the printed circuit board of terminal box, between the anode of input terminal and the anode of output end and input terminal
Cathode and output end cathode between, respectively be arranged a N-type MOSFET；Between the anode of output end and the cathode of input terminal,
Bridge the series resonant circuit being made of two inductors and a capacitor；The cathode of the cathode of input terminal and output end it
Between, bridge a start-up capacitance device.
Preferably, on the printed circuit board of terminal box, between the anode of input terminal and the anode of output end, setting one or
Two N-type MOSFET being serially connected；Between the anode and cathode of output end, bridge by an inductor and a capacitor structure
At series resonant circuit.
Preferably, on the printed circuit board of terminal box, between the cathode of input terminal and the cathode of output end, setting one or
Two N-type MOSFET being serially connected；Between the anode of output end and the cathode of input terminal, bridge by an inductor and one
The series resonant circuit that capacitor is constituted；Between the cathode of input terminal and the cathode of output end, a start-up capacitance device is bridged.
Preferably, on the printed circuit board of terminal box, between the anode of input terminal and the anode of output end and input terminal
Cathode and output end cathode between, respectively be arranged a p-type MOSFET；Between the anode of input terminal and the cathode of output end,
Bridge the series resonant circuit being made of two inductors and a capacitor；The anode of the anode and output end of input terminal
Between, bridge a start-up capacitance device.
Preferably, on the printed circuit board of terminal box, between the anode of input terminal and the anode of output end, setting one or
Two p-type MOSFET being serially connected；Between the anode of input terminal and the cathode of output end, bridge by an inductor and one
The series resonant circuit that capacitor is constituted；Between the anode of input terminal and the anode of output end, a start-up capacitance device is bridged.
Preferably, on the printed circuit board of terminal box, between the cathode of input terminal and the cathode of output end, setting one or
Two p-type MOSFET being serially connected；Between the anode and cathode of output end, bridge by an inductor and a capacitor structure
At series resonant circuit.
Preferably, on the printed circuit board of terminal box, the voltage doubling rectifing circuit being made of diode and capacitor, voltage
Output port one voltage-stabiliser tube of parallel connection.
The utility model MOSFET active matrix driving technical solution conventional with MOSFET passive drive technical solution substitution, saves
The independent current source and MOSFET active matrix driving of essential high stability energy in MOSFET active matrix driving technical solution are omited
Circuit；Communicating circuit is omitted using simple series resonant circuit as the reception circuit of " outside high-frequency signals " simultaneously.With
The prior art is compared, and the technical program simplifies the control circuit for the photovoltaic component terminal box that can be rapidly switched off significantly, thus
And product cost is brought to be remarkably decreased, the beneficial effect that reliability and service life are obviously improved.
Detailed description of the invention
It is described in further detail below in conjunction with attached drawing and the embodiments of the present invention
The circuit diagram for the photovoltaic component terminal box exemplary embodiments that Fig. 1 the utility model can rapidly switch off；
Fig. 2 is the circuit diagram of embodiment 2；
Fig. 3 is the circuit diagram of embodiment 3；
Fig. 4 is the circuit diagram of embodiment 4；
Fig. 5 is the circuit diagram of embodiment 5；
Fig. 6 is the circuit diagram of embodiment 6；
Fig. 7 is the circuit diagram of embodiment 7；
Fig. 8 is the circuit diagram of embodiment 8；
Fig. 9 is the circuit diagram of embodiment 9；
Figure 10 is the circuit diagram of embodiment 10；
The DC side schematic diagram that Figure 11 is applied in photovoltaic generating system based on the exemplary embodiments of Fig. 1.
Specific embodiment
Exemplary embodiments 1
As shown in Figure 1, on terminal box printed circuit board, the anode of anode (Fig. 1, left side PV+) and output end of input terminal
Between (Fig. 1, right side PV+), the anode of drain electrode and input terminal that first N-type MOSFET Q101, Q101 is arranged is connected, Q101
Source electrode and output end anode connect；The cathode (Fig. 1, left side PV-) of input terminal and the cathode (Fig. 1, right side PV-) of output end
Between, the cathode of source electrode and input terminal that second N-type MOSFET Q102, Q102 is arranged connects, the drain electrode of Q102 and output end
Cathode connection, Q101, Q102 make respectively as the performer of terminal box positive electrode bus and negative electrode bus being switched on or off
Obtaining terminal box becomes bipolar controllable arrangements of electric connection.In Q101 or Q102, any one occurs under the fault condition that can not be turned off
(irreversible Damage by Short Circuit occurs for such as MOSFET source and drain electrode), due to still having one in positive electrode bus and negative electrode bus
A performer turned off, this Redundancy Design improve the reliability that terminal box executes turn-off function, meet IEC 61508
The requirement of (functional safeties of electric and electronic programmable electronic safety-related systems) functional safety grade SIL 2.
Between the anode of output end and the cathode of input terminal, bridge by inductor L101, capacitor C105, inductor L102
The series resonant circuit of composition, the high-frequency signal applied for receiving output port by outside；The cathode and output end of input terminal
Cathode between, bridge a start-up capacitance device C106, when terminal box is initially opened, for L101, C105, L102 constitute series connection
Resonance circuit provides the access of a reception high-frequency signal.The resonance frequency of series resonant circuit by L101, L102 inductance
It is determined with the capacitance of C105, i.e. resonance frequencyThe resonance frequency rationally takes
Value range is 100kHz to 500kHz.When the high-frequency signal outside terminal box is applied at output port, L101,
The series resonant circuit that C105, L102 are constituted is motivated, and L101, L102 generate resonance potential, respective inductance resonance potential
Virtual value be respectively UL101=2 π f × L101× I (I: flowing through the current effective value of series resonant circuit), UL102=2 π f × L102
×I.It can be seen that it is premise that Q1, Q2 obtain symmetrical driving voltage that the inductance value of L101, L102 are identical.
The two voltage doubling rectifying circuit being made of diode D101, D103 and capacitor C101, C103 is in parallel with L101, defeated
The anode of voltage and cathode are connect with the grid of Q101 and source electrode respectively out, by the resonance potential of L101 in series resonant circuit,
The driving voltage of Q101 is transformed into passive mode；Two multiplication of voltages being made of diode D102, D104 and capacitor C102, C104
Rectification circuit is in parallel with L102, and the anode and cathode of output voltage are connect with the grid of Q102 and source electrode respectively, will connect humorous
The resonance potential of L102, the driving voltage of Q102 is transformed into passive mode in vibration circuit.
The cathode and the grid connection of Q101, anode of voltage-stabiliser tube Z101 is connect with the source electrode of Q101, to prevent the drive of Q101
Dynamic voltage is more than the maximum value that it allows；The grid connection of cathode and Q102 of voltage-stabiliser tube Z102, the source electrode of anode and Q102 connect
It connects, is more than the maximum value that it allows to prevent the driving voltage of Q102.
Resistor R101 is in parallel with C101, and R102 is in parallel with C102, in terminal box turn off process, the storage of C101, C102
The driving voltage of Q101, Q102 can be made to rapidly disappear by R101, R102 quick release, when Q101, Q102 being avoided to be in longer
Between under-voltage driving condition caused by permanent damage.
One bypass diode D105 of output port parallel connection.When Q101, Q102 are all in opening state, D105 is reversely cut
Only；When as Q101, Q102, any one can not be opened for some reason, the automatic forward conduction of D105, output port is bypassed conducting, i.e., should
The corresponding photovoltaic module of terminal box is bypassed.
The working principle of following all examples is similar to Example 1.
Embodiment 2
As shown in Fig. 2, setting is mutual between the anode and the anode of output end (right side) of the input terminal (left side) of terminal box
Concatenated two N-type MOSFET Q201, Q202, bridging is by inductor L201, capacitor between the anode and cathode of output end
The series resonant circuit that C203 is constituted, the high-frequency signal applied for receiving output port by outside；By two diode D201,
The two voltage doubling rectifying circuit that D202, two capacitors C201, C202 are constituted is in parallel with inductor L201, the anode of output voltage
It is connect with the grid of Q201, Q202, the source electrode connection of cathode and Q202, by the resonance electricity of inductor L201 in series resonant circuit
Pressure, the driving voltage of Q201, Q202 are transformed into passive mode；The also parallel connection one of the voltage output port of two voltage doubling rectifying circuit is steady
Pressure pipe Z201 is more than the maximum value that it allows to prevent the driving voltage of Q201, Q202.The output port of terminal box is in parallel on one side
Road diode D203.
Embodiment 3
As shown in figure 3, mutually string is arranged between the cathode of terminal box input terminal (left side) and the cathode of output end (right side)
Two N-type MOSFET Q301, Q302 of connection, bridging is by inductor L301, electricity between the anode of output end and the cathode of input terminal
The series resonant circuit that container C303 is constituted, the high-frequency signal applied for receiving output port by outside；Terminal box input terminal
Cathode and output end cathode between bridge a start-up capacitance C304.By two diode D301, D302, two capacitors
The two voltage doubling rectifying circuit that C301, C302 are constituted is in parallel with inductor L301, the grid of the anode and Q301, Q302 of output voltage
The source electrode of pole connection, cathode and Q301 connect, and the resonance potential of inductor L301 in series resonant circuit is become with passive mode
Change the driving voltage of Q301, Q302 into；The voltage output port of two voltage doubling rectifying circuit also one voltage-stabiliser tube Z301 of parallel connection, to prevent
The driving voltage of Q301, Q302 are more than the maximum value that it allows.The one bypass diode D303 of output port parallel connection of terminal box.
Embodiment 4
As shown in figure 4, a N is arranged between the anode and the anode of output end (right side) of the input terminal (left side) of terminal box
Type MOSFET Q401 bridges the series resonance being made of inductor L401, capacitor C403 between the anode and cathode of output end
Circuit, the high-frequency signal applied for receiving output port by outside；By two diode D401, D402, two capacitors
The two voltage doubling rectifying circuit that C401, C402 are constituted is in parallel with inductor L401, and the anode of output voltage connects with the grid of Q401
It connects, cathode is connect with source electrode, by the resonance potential of inductor L401 in series resonant circuit, is transformed into Q401's with passive mode
Driving voltage；The voltage output port of two voltage doubling rectifying circuit also one voltage-stabiliser tube Z401 of parallel connection, to prevent the driving voltage of Q401
The maximum value allowed more than it.The one bypass diode D403 of output port parallel connection of terminal box.
Embodiment 5
As shown in figure 5, a N-type is arranged between the cathode of terminal box input terminal (left side) and the cathode of output end (right side)
MOSFET Q501 bridges the string being made of inductor L501, capacitor C503 between the anode of output end and the cathode of input terminal
Join resonance circuit, the high-frequency signal applied for receiving output port by outside；The cathode of terminal box input terminal and output end
A start-up capacitance C504 is bridged between cathode.Two be made of two diode D501, D502, two capacitors C501, C502
Voltage doubling rectifing circuit is in parallel with inductor L501, and the anode of output voltage is connect with the grid of Q501, the source of cathode and Q501
Pole connection, by the resonance potential of inductor L501 in series resonant circuit, the driving voltage of Q501 is transformed into passive mode；Two
The voltage output port of voltage doubling rectifing circuit also one voltage-stabiliser tube Z501 of parallel connection is more than what it allowed to prevent the driving voltage of Q501
Maximum value.The one bypass diode D503 of output port parallel connection of terminal box.
Embodiment 6
As shown in fig. 6, first P is arranged between the anode and the anode of output end (right side) of terminal box input terminal (left side)
Second p-type MOSFET Q602 is arranged in type MOSFET Q601 between the cathode of input terminal and the cathode of output end；Input terminal
The series resonance electricity being made of inductor L601, capacitor C606, inductor L602 is bridged between anode and the cathode of output end
Road, the high-frequency signal applied for receiving output port by outside；Between the anode of terminal box input terminal and the anode of output end
Bridge a start-up capacitance C605；By four diode D601, D603, D602, D604, four capacitor C601, C603, C602,
Two groups of two voltage doubling rectifying circuits that C604 is constituted are in parallel with inductor L601, L602 respectively, output voltage it is positive respectively with
The grid of Q601, Q602 connects, and cathode is connect with the source electrode of Q601, Q602 respectively, by inductor L601 in series resonant circuit,
The resonance potential of L602 is transformed into the driving voltage of Q601, Q602 with passive mode；The voltage of two groups of two voltage doubling rectifying circuits is defeated
Exit port also distinguishes one voltage-stabiliser tube Z601, Z602 of parallel connection, is more than the maximum that it allows to prevent the driving voltage of Q601, Q602
Value.The one bypass diode D605 of output port parallel connection of terminal box.
Embodiment 7
As shown in fig. 7, setting is mutual between the anode and the anode of output end (right side) of the input terminal (left side) of terminal box
Concatenated two p-type MOSFET Q701, Q702, between the anode of input terminal and the cathode of output end bridging by inductor L701,
The series resonant circuit that capacitor C704 is constituted, the high-frequency signal applied for receiving output port by outside；Terminal box input
A start-up capacitance C703 is bridged between the anode at end and the anode of output end.By two diode D701, D702, two capacitors
The two voltage doubling rectifying circuit that C701, C702 are constituted is in parallel with inductor L701, the grid of the anode and Q701, Q702 of output voltage
The source electrode of pole connection, cathode and Q701 connect, and the resonance potential of inductor L701 in series resonant circuit is become with passive mode
Change the driving voltage of Q701, Q702 into；The voltage output port of two voltage doubling rectifying circuit also one voltage-stabiliser tube Z701 of parallel connection, to prevent
The driving voltage of Q701, Q702 are more than the maximum value that it allows.The one bypass diode D703 of output port parallel connection of terminal box.
Embodiment 8
As shown in figure 8, mutually string is arranged between the cathode of terminal box input terminal (left side) and the cathode of output end (right side)
Two p-types metal-oxide-semiconductor field effect transistor Q801, Q802 of connection, bridging is by inductor L801, capacitor between the anode and cathode of output end
The series resonant circuit that C803 is constituted, the high-frequency signal applied for receiving output port by outside；By two diode D801,
The two voltage doubling rectifying circuit that D802, two capacitors C801, C802 are constituted is in parallel with inductor L801, the anode of output voltage
It is connect with the grid of Q801, Q802, the source electrode connection of cathode and Q802, by the resonance electricity of inductor L801 in series resonant circuit
Pressure, the driving voltage of Q801, Q802 are transformed into passive mode；The also parallel connection one of the voltage output port of two voltage doubling rectifying circuit is steady
Pressure pipe Z801 is more than the maximum value that it allows to prevent the driving voltage of Q801, Q802.The output port of terminal box is in parallel on one side
Road diode D803.
Embodiment 9
As shown in figure 9, a p-type is arranged between the anode and the anode of output end (right side) of terminal box input terminal (left side)
MOSFET Q901 bridges the string being made of inductor L901, capacitor C904 between the anode of input terminal and the cathode of output end
Join resonance circuit, the high-frequency signal applied for receiving output port by outside；The anode of terminal box input terminal and output end
A start-up capacitance C903 is bridged between anode；Two be made of two diode D901, D902, two capacitors C901, C902
Voltage doubling rectifing circuit is in parallel with inductor L901, and the anode of output voltage is connect with the grid of Q901, and cathode is connect with source electrode,
By the resonance potential of inductor L901 in series resonant circuit, the driving voltage of Q901 is transformed into passive mode；Two times of repoussages
The voltage output port of current circuit also one voltage-stabiliser tube Z901 of parallel connection is more than the maximum that it allows to prevent the driving voltage of Q901
Value.The one bypass diode D903 of output port parallel connection of terminal box.
Embodiment 10
As shown in Figure 10, a P is set between the cathode of terminal box input terminal (left side) and the cathode of output end (right side)
Type MOSFET Q1001 bridges the series connection being made of inductor L1001, capacitor C1003 between the anode and cathode of output end
Resonance circuit, the high-frequency signal applied for receiving output port by outside；By two diode D1001, D1002, two electricity
The two voltage doubling rectifying circuit that container C1001, C1002 are constituted is in parallel with inductor L1001, the anode and Q1001 of output voltage
Grid connection, the source electrode of cathode and Q1001 connect, by the resonance potential of inductor L1001 in series resonant circuit, with passive
Mode conversion at Q1001 driving voltage；The voltage output port of two voltage doubling rectifying circuit also one voltage-stabiliser tube Z1001 of parallel connection, with
Prevent the driving voltage of Q1001 more than the maximum value that it allows.The one bypass diode D1003 of output port parallel connection of terminal box.
As shown in figure 11, in photovoltaic generating system application, its input terminal of several terminal boxes 2 of DC side is by polarity and respectively
From photovoltaic module 1 connect, output end connects again with the output port of signal generator 3 after being sequentially connected in series by polarity, finally presses
The direct-flow input end of polarity access inverter 4.Signal generator 3 is exported with constant current mode, output signal frequency should with connect
The natural resonance frequency of series resonant circuit is identical in wire box 2.When needing photovoltaic generating system to operate normally, starts and keep
The high-frequency signal of the output of signal generator 3, output is applied to all wiring in photovoltaic module string by means of DC power line
The output port of box, terminal box are quickly opened and are maintained, and photovoltaic module string conveys electric energy to the direct-flow input end of inverter 4；?
It is urgent or other it is in need in the state of, only need the output of shutdown signal generator 3, that is, remove all wiring in photovoltaic module string
The high-frequency signal of box output port, terminal box 2 rapidly switch off, and are eliminated therewith by the high direct voltage that the series connection of photovoltaic module 1 is formed.
Claims (8)
1. the photovoltaic component terminal box that one kind can rapidly switch off, it is characterised in that: including one or two MOSFET as wiring
The performer that box is switched on or off, input anode is arranged on terminal box printed circuit board in the MOSFET and output is rectified
Between pole, and/or between input cathode and negative pole of output end；The series resonant circuit being made of inductor, capacitor, is used for
Receive the high-frequency signal applied outside output port；The voltage doubling rectifing circuit being made of diode and capacitor, by series resonance
Inductor resonance potential in circuit is transformed into the driving voltage of MOSFET with passive mode.
2. the photovoltaic component terminal box that one kind as described in claim 1 can rapidly switch off, it is characterised in that: the printing of terminal box
On circuit board, between the anode of input terminal and the anode of output end and between the cathode of input terminal and the cathode of output end, respectively
One N-type MOSFET is set；Between the anode of output end and the cathode of input terminal, bridge by two inductors and a capacitor
The series resonant circuit of composition；Between the cathode of input terminal and the cathode of output end, a start-up capacitance device is bridged.
3. the photovoltaic component terminal box that one kind as described in claim 1 can rapidly switch off, it is characterised in that: the printing of terminal box
On circuit board, between the anode of input terminal and the anode of output end, setting one or two N-type MOSFET being serially connected are defeated
Between the anode and cathode of outlet, the series resonant circuit being made of an inductor and a capacitor is bridged.
4. the photovoltaic component terminal box that one kind as described in claim 1 can rapidly switch off, it is characterised in that: the printing of terminal box
On circuit board, between the cathode of input terminal and the cathode of output end, setting one or two N-type MOSFET being serially connected are defeated
Between the anode of outlet and the cathode of input terminal, the series resonant circuit being made of an inductor and a capacitor is bridged；
Between the cathode of input terminal and the cathode of output end, a start-up capacitance device is bridged.
5. the photovoltaic component terminal box that one kind as described in claim 1 can rapidly switch off, it is characterised in that: the printing of terminal box
On circuit board, between the anode of input terminal and the anode of output end and between the cathode of input terminal and the cathode of output end, respectively
One p-type MOSFET is set；Between the anode of input terminal and the cathode of output end, bridge by two inductors and a capacitor
The series resonant circuit of composition；Between the anode of input terminal and the anode of output end, a start-up capacitance device is bridged.
6. the photovoltaic component terminal box that one kind as described in claim 1 can rapidly switch off, it is characterised in that: the printing of terminal box
On circuit board, between the anode of input terminal and the anode of output end, setting one or two p-type MOSFET being serially connected；It is defeated
Enter between the anode at end and the cathode of output end, bridges the series resonant circuit being made of an inductor and a capacitor；
Between the anode of input terminal and the anode of output end, a start-up capacitance device is bridged.
7. the photovoltaic component terminal box that one kind as described in claim 1 can rapidly switch off, it is characterised in that: the printing of terminal box
On circuit board, between the cathode of input terminal and the cathode of output end, setting one or two p-type MOSFET being serially connected；It is defeated
Between the anode and cathode of outlet, the series resonant circuit being made of an inductor and a capacitor is bridged.
8. the photovoltaic component terminal box that one kind as described in claim 1 can rapidly switch off, it is characterised in that: the printing of terminal box
On circuit board, the voltage doubling rectifing circuit being made of diode and capacitor, one voltage-stabiliser tube of voltage output port parallel connection.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821214214.9U CN208479574U (en) | 2018-07-30 | 2018-07-30 | A kind of photovoltaic component terminal box rapidly switched off |
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| CN201821214214.9U CN208479574U (en) | 2018-07-30 | 2018-07-30 | A kind of photovoltaic component terminal box rapidly switched off |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112787313A (en) * | 2019-11-08 | 2021-05-11 | 株洲中车时代电气股份有限公司 | Ship direct-current power grid short-circuit protection device |
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2018
- 2018-07-30 CN CN201821214214.9U patent/CN208479574U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112787313A (en) * | 2019-11-08 | 2021-05-11 | 株洲中车时代电气股份有限公司 | Ship direct-current power grid short-circuit protection device |
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