CN206894605U - High-voltage direct current switch device - Google Patents
High-voltage direct current switch device Download PDFInfo
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- CN206894605U CN206894605U CN201720832869.1U CN201720832869U CN206894605U CN 206894605 U CN206894605 U CN 206894605U CN 201720832869 U CN201720832869 U CN 201720832869U CN 206894605 U CN206894605 U CN 206894605U
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Abstract
The utility model provides a kind of high-voltage direct current switch device, including：First switch, second switch, third switch and controller；The first switch and the 3rd switch are pressure common break-make switching device, and the second switch is controllable semiconductor switching device；The first switch, the second switch, the 3rd switch are electrically connected with the controller；The controller be used for control the first switch, the second switch and the described 3rd switch on-off and break-make order；The first switch connected with the second switch after with the 3rd switch in parallel.The high-voltage direct current switch device has that compact, cost be low, low in energy consumption, the advantages of need not radiating, having a wide range of application.
Description
Technical field
It the utility model is related to electronic switch field, more particularly to high-voltage direct current switch device.
Background technology
The easily arcing between break-make switching device contact in break-make due to high voltage direct current, common break-make is caused to switch
Element can not safely and effectively carry out division.And arcing easily causes high temperature and ablation, break-make switching device contact can be reduced
Life-span even can also burn break-make switching device because of arcing.
Mainly partly led using high-voltage DC contactor and high-voltage MOSFET, IGBT etc. are controllable in HVDC occasion at present
Volume elements device.High-voltage DC contactor is for effective arc extinguishing, and use is hermetically sealed, interior filling with inert gas and interior plus permanent magnet are used
The technologies such as magnetic quenching, but these technologies cause the volume of high-voltage DC contactor to be far longer than common break-make switching device, and
And the difficulty of production and processing is higher, its production cost is caused to be the decades of times of common break-make switching device to hundreds times.Part is high
Straightening flow field is closed also controls high pressure break-make, but controllable half using the controllable semiconductor such as high-voltage MOSFET or high pressure IGBT component
Conductor component still has Weak current by that can not realize thorough cut-out, and controllable semiconductor component when disconnecting
Can seriously it be generated heat when passing through high current for a long time, it is necessary to be equipped with radiator, fan could be used safely to cool.
Utility model content
To overcome the problems of the prior art, the purpose of this utility model is to provide a kind of high-voltage direct current switch device, should
Device has the advantages of compact, cost are low, need not radiate, have a wide range of application, and can solve the problem that the drawing of HVDC break-make
Arch problem.
To achieve the above object, the utility model adopts the following technical scheme that：
A kind of high-voltage direct current switch device, including：First switch, second switch, third switch and controller；Described first
Switch and the described 3rd switch are pressure common break-make switching device, and the second switch is controllable semiconductor switching device；
The first switch, the second switch, the 3rd switch are electrically connected with the controller；The controller is used to control
Make the first switch, the second switch and the described 3rd switch on-off and break-make order；The first switch and institute
State second switch series connection after with the 3rd switch in parallel.
As the further improvement of above-mentioned technical proposal, the high-voltage direct current switch device is being used for break-make HVDC just
Pole；One end of the first switch is connected with the electrode input end of the HVDC, the other end of the first switch and institute
One end connection of second switch is stated, the other end of the second switch is connected with the cathode output end of the HVDC；It is described
One end of 3rd switch is connected with the electrode input end of the HVDC, the other end and the high straightening of the 3rd switch
The cathode output end of stream is connected.
As the further improvement of above-mentioned technical proposal, the high-voltage direct current switch device is being used for break-make HVDC just
Pole；One end of the second switch is connected with the electrode input end of the HVDC, the other end of the second switch and institute
One end connection of first switch is stated, the other end of the first switch is connected with the cathode output end of the HVDC；It is described
One end of 3rd switch is connected with the electrode input end of the HVDC, the other end and the high straightening of the 3rd switch
The cathode output end of stream is connected.
As the further improvement of above-mentioned technical proposal, the high-voltage direct current switch device is used for the negative of break-make HVDC
Pole；One end of the first switch is connected with the negative input of the HVDC, the other end of the first switch and institute
One end connection of second switch is stated, the other end of the second switch is connected with the cathode output end of the HVDC；It is described
One end of 3rd switch is connected with the negative input of the HVDC, the other end and the high straightening of the 3rd switch
The cathode output end of stream is connected.
As the further improvement of above-mentioned technical proposal, the high-voltage direct current switch device is used for the negative of break-make HVDC
Pole；One end of the second switch is connected with the negative input of the HVDC, the other end of the second switch and institute
One end connection of first switch is stated, the other end of the first switch is connected with the cathode output end of the HVDC；It is described
One end of 3rd switch is connected with the negative input of the HVDC, the other end and the high straightening of the 3rd switch
The cathode output end of stream is connected.
As the further improvement of above-mentioned technical proposal, the high-voltage direct current switch device also includes the 4th switch, described
4th switch is pressure common break-make switching device, and the 4th switch is electrically connected with the controller；The HVDC
Switching device is used for the positive pole and negative pole of break-make HVDC；One end of the first switch and the positive pole of the HVDC are defeated
Enter end be connected, the other end of the first switch is connected with one end of the second switch, the other end of the second switch and
The cathode output end of the HVDC is connected；One end of 3rd switch and the electrode input end phase of the HVDC
Even, the other end of the 3rd switch is connected with the cathode output end of the HVDC；One end of 4th switch and institute
The negative input for stating HVDC is connected, the cathode output end phase of the other end and the HVDC of the 4th switch
Even.
As the further improvement of above-mentioned technical proposal, the high-voltage direct current switch device also includes the 4th switch, described
4th switch is pressure common break-make switching device, and the 4th switch is electrically connected with the controller；The HVDC
Switching device is used for the positive pole and negative pole of break-make HVDC；One end of the second switch and the positive pole of the HVDC are defeated
Enter end be connected, the other end of the second switch is connected with one end of the first switch, the other end of the first switch and
The cathode output end of the HVDC is connected；One end of 3rd switch and the electrode input end phase of the HVDC
Even, the other end of the 3rd switch is connected with the cathode output end of the HVDC；One end of 4th switch and institute
The negative input for stating HVDC is connected, the cathode output end phase of the other end and the HVDC of the 4th switch
Even.
As the further improvement of above-mentioned technical proposal, the high-voltage direct current switch device also includes the 4th switch, described
4th switch is pressure common break-make switching device, and the 4th switch is electrically connected with the controller；The HVDC
Switching device is used for the positive pole and negative pole of break-make HVDC；One end of 4th switch and the positive pole of the HVDC are defeated
Enter end to be connected, the other end of the 4th switch is connected with the cathode output end of the HVDC；The one of the first switch
End is connected with the negative input of the HVDC, and one end of the other end of the first switch and the second switch connects
Connect, the other end of the second switch is connected with the cathode output end of the HVDC；One end of 3rd switch and institute
The negative input for stating HVDC is connected, the cathode output end phase of the other end and the HVDC of the 3rd switch
Even.
As the further improvement of above-mentioned technical proposal, the high-voltage direct current switch device also includes the 4th switch, described
4th switch is pressure common break-make switching device, and the 4th switch is electrically connected with the controller；The HVDC
Switching device is used for the positive pole and negative pole of break-make HVDC；One end of 4th switch and the positive pole of the HVDC are defeated
Enter end to be connected, the other end of the 4th switch is connected with the cathode output end of the HVDC；The one of the second switch
End is connected with the negative input of the HVDC, and the other end of the second switch and one end of the first switch connect
Connect, the other end of the first switch is connected with the cathode output end of the HVDC；One end of 3rd switch and institute
The negative input for stating HVDC is connected, the cathode output end phase of the other end and the HVDC of the 3rd switch
Even.
As the further improvement of above-mentioned technical proposal, the high-voltage direct current switch device also includes diode, and described two
Pole pipe is used to prevent reverse irrigated current.
As the further improvement of above-mentioned technical proposal, the pressure common break-make switching device is relay；It is described can
It is MOSFET, IGBT or IGCT to control semiconductor switch element.
Using technical scheme provided by the utility model, compared with existing known technology, at least have following beneficial to effect
Fruit：
(1) compared with high-voltage DC contactor, volume is more compact, and it is small to install required space.
(2) cost is cheap, and the ratio of performance to price is high.
(3) energy loss is low.
(4) heat abstractor need not be configured.
Brief description of the drawings
, below will be to required use in embodiment in order to illustrate more clearly of the technical scheme of the utility model embodiment
Accompanying drawing be briefly described, it will be appreciated that the following drawings illustrate only some embodiments of the present utility model, therefore should not be by
Regard the restriction to scope as, for those of ordinary skill in the art, on the premise of not paying creative work, may be used also
To obtain other related accompanying drawings according to these accompanying drawings.
Fig. 1 is the structural representation for the high-voltage direct current switch device that the embodiment of the utility model one proposes；
Fig. 2 is the high-voltage direct current switch dress for the positive pole applied to break-make HVDC that the embodiment of the utility model one proposes
The circuit connection diagram put；
Fig. 3 is the proposition of the embodiment of the utility model one applied to the positive pole of break-make HVDC and the HVDC of negative pole
The circuit connection diagram of switching device；
Fig. 4 is the structural representation for the high-voltage direct current switch device that another embodiment of the utility model proposes；
Fig. 5 is another embodiment proposition of the utility model applied to the positive pole of break-make HVDC and the high straightening of negative pole
Flow the circuit connection diagram of switching device.
Embodiment
Hereinafter, the various embodiments of the disclosure will be described more fully.The disclosure can have various embodiments, and
It can adjust and change wherein.It should be understood, however, that：It is limited to spy disclosed herein in the absence of by the various embodiments of the disclosure
Determine the intention of embodiment, but the disclosure should be interpreted as covering in the spirit and scope for the various embodiments for falling into the disclosure
All adjustment, equivalent and/or alternatives.
Hereinafter, disclosed in the term " comprising " that can be used in the various embodiments of the disclosure or " may include " instruction
Function, operation or the presence of element, and do not limit the increase of one or more functions, operation or element.In addition, such as exist
Used in the various embodiments of the disclosure, term " comprising ", " having " and its cognate are meant only to represent special characteristic, number
Word, step, operation, the combination of element, component or foregoing item, and be understood not to exclude first one or more other
Feature, numeral, step, operation, element, component or foregoing item combination presence or one or more features of increase, numeral,
Step, operation, element, component or foregoing item combination possibility.
In the various embodiments of the disclosure, statement " at least one in A or/and B " includes the word listed file names with
Any combinations or all combinations." A or B " or " at least one in A or/and B " may include A, may include B or can for example, statement
Including A and B both.
The statement (" first ", " second " etc.) used in the various embodiments of the disclosure can be modified in various implementations
Various element in example, but respective sets can not be limited into element.For example, presented above be not intended to limit the suitable of the element
Sequence and/or importance.The purpose presented above for being only used for differentiating an element and other elements.For example, the first user fills
Put and indicate different user device with second user device, although the two is all user's set.For example, each of the disclosure is not being departed from
In the case of the scope of kind embodiment, the first element is referred to alternatively as the second element, and similarly, the second element is also referred to as first
Element.
It should be noted that：, can be by the first composition member if an element ' attach ' to another element by description
Part is directly connected to the second element, and " connection " the 3rd can be formed between the first element and the second element
Element.On the contrary, when an element " being directly connected to " is arrived into another element, it will be appreciated that be in the first element
And second be not present the 3rd element between element.
The term " user " used in the various embodiments of the disclosure, which may indicate that, to be used the people of electronic installation or uses electricity
The device (for example, artificial intelligence electronic installation) of sub-device.
The term used in the various embodiments of the disclosure is only used for describing the purpose of specific embodiment and not anticipated
In the various embodiments of the limitation disclosure.As used herein, singulative is intended to also include plural form, unless context is clear
Chu it is indicated otherwise.Unless otherwise defined, all terms (including the technical term and scientific terminology) tool being otherwise used herein
There is the implication identical implication that the various embodiment one skilled in the art with the disclosure are generally understood that.The term
(term such as limited in the dictionary typically used) is to be interpreted as having and the situational meaning in correlative technology field
Identical implication and the implication with Utopian implication or overly formal will be not construed as, unless in the various of the disclosure
It is clearly defined in embodiment.
Embodiment 1
As shown in figure 1, it is a kind of high-voltage direct current switch device provided by the utility model.The high-voltage direct current switch device bag
Include：First switch K1, second switch K2, the 3rd switch K3 and controller；The switches of first switch K1 and the 3rd K3 is common low
Break-make switching device is pressed, second switch K2 is controllable semiconductor switching device；First switch K1 connected with second switch K2 after with
3rd switch K3 is in parallel；First switch K1, second switch K2, the 3rd switch K3 are electrically connected with the controller；The control
Device processed is used to control first switch K1, second switch K2 and the 3rd to switch K3 break-make and break-make order；So as to control a, b two
Break-make between node.
Pressure common break-make switching device can be relay；The controllable semiconductor switching device can be MOSFET,
IGBT or IGCT.
First switch K1, second switch K2, the 3rd switch K3 is controlled to connect through and off by drive circuit by controller
Open, to realize the break-make of HVDC.
Controller can control first switch K1, second switch K2, the 3rd switch K3 control to believe by low and high level
Number realize switch connecting and disconnecting.When control signal is set to high level, the connection of switch is realized；When control signal be set to it is low
During level, the disconnection of switch is realized.When 2 points of high-voltage direct current switch device a, b circuit, which are in, to be disconnected, first switch K1, the
Two switch K2, the 3rd switch K3 control signal set low level；First switch K1, second switch K2, the 3rd switch K3 locate
In off-state.Controller can be realized with 51 single chip machine controlling circuits.
When needing to connect two node of a, b, first switch K1 control signal is set to high level first, makes first switch
K1 is connected, and during being connected due to first switch K1, second switch K2, the 3rd switch K3 are all in off-state, so first
No current flows through when switch K1 is connected, and can connect safely.Then second switch K2 control signal is set to high level, makes
Two switch K2 are connected, and now the node of a, b two is connected, because second switch K2 is controllable semiconductor switching device, without considering to draw
The situation of arc sparking.By the 3rd switch K3 control after second switch K2 control signal to be set to several milliseconds of high level
Signal is set to high level, connects the 3rd switch K3, now flows through the electric current of the node of a, b two and can be flowed through from the 3rd switch K3, by
After second switch K2 connections, the 3rd switch K3 is also connected, so the time that high current is carried on second switch K2 is very short, nothing
Heat dissipation problem need to be considered.Before and after 3rd switch K3 is connected, because first switch K1 and second switch K2 have been turned on, the node of a, b two
In an ON state, voltage is almost nil before and after the 3rd switch K3 is connected, so without consideration Arcing situation.
After first switch K1, second switch K2 and the 3rd switch K3 are all in on-state, high-voltage direct current switch device
Into steady operation, K3 is in parallel can ensure that a, b two is saved with the 3rd switch after being connected due to first switch K1 with second switch K2
Total resistance between point is smaller, and the energy that high-voltage direct current switch device is lost in circuit is smaller.
After being connected along with the node of a, b two, because first switch K1 and second switch K2 connects, first switch K1 and second
Impedance of the total impedance after K2 series connection much larger than the 3rd switch K3 is switched, therefore the electric current for flowing through the node of a, b two flows mainly through the
Three switch K3, the electric current for flowing through first switch K1 and second switch K2 can be ignored.A, the nodes of b two carrying electric current just only has
One the 3rd switch K3, so the probability that high-voltage direct current switch device breaks down can be smaller, the loss of energy in circuit in fact
Can be smaller.
When needing to disconnect two node of a, b, the 3rd switch K3 control signal is set to low level first, makes the 3rd switch
K3 disconnects, and during the 3rd switch K3 disconnects, is switched on due to first switch K1 and second switch K2, the 3rd switch K3
Rear and front end voltage change very little is disconnected, so the 3rd switch K3 can be safely disconnected.Then by second switch K2 control signal
Low level is set to, disconnects second switch K2, second switch K2 is controllable semiconductor component, and its disconnection process time is extremely short,
And Arcing situation need not be considered, so second switch K2 can also be safely disconnected.Finally by first switch K1 control signal
Low level is set to, disconnects first switch K1, because the 3rd switch K3 and second switch K2 has disconnected, before and after first switch K1
No-voltage no current, so can be safely disconnected without consideration Arcing situation.
Embodiment 2
As shown in Fig. 2 filled for the high-voltage direct current switch of the positive pole provided by the utility model applied to break-make HVDC
The circuit connection diagram put.The high-voltage direct current switch device includes：First switch K1, second switch K2, the 3rd switch K3 and
Controller；First switch K1 one end is connected with the electrode input end of the HVDC, the first switch K1 other end and
Two switch K2 one end connection, the second switch K2 other end are connected with the cathode output end of the HVDC；3rd switch
K3 one end is connected with the electrode input end of the HVDC, the positive pole of the 3rd switch the K3 other end and the HVDC
Output end is connected；The switches of first switch K1 and the 3rd K3 is pressure common break-make switching device, and second switch K2 is controllable half
Conductor switching device；First switch K1, second switch K2, the 3rd switch K3 are electrically connected with the controller；The control
Device is used to control first switch K1, second switch K2 and the 3rd to switch K3 break-make and break-make order.
Control first switch K1, the switches of second switch K2 and the 3rd K3 are in turn switched on, so as to realize that high-voltage direct current switch fills
Put connection.
The 3rd switch K3, second switch K2 and first switch K1 is controlled to disconnect successively, so as to realize that high-voltage direct current switch fills
Put disconnection.
In other embodiments, can be by first switch K1 and second switch K2 location swap.
In other embodiments, the positive pole that the high-voltage direct current switch device can be used for break-make HVDC is changed to use
In the negative pole of break-make HVDC.
Embodiment 3
As shown in figure 3, it is the positive pole provided by the utility model applied to break-make HVDC and the HVDC of negative pole
The circuit connection diagram of switching device.The high-voltage direct current switch device includes：First switch K1, second switch K2, the 3rd open
Close K3, the 4th switch K4 and controller；4th switch K4 one end is connected with the negative input of the HVDC, and the 4th opens
The other end for closing K4 is connected with the cathode output end of the HVDC；First switch K1 one end and the HVDC are just
Pole input is connected, and the first switch K1 other end is connected with second switch K2 one end, the second switch K2 other end and institute
The cathode output end for stating HVDC is connected；3rd switch K3 one end is connected with the electrode input end of the HVDC, the
The three switch K3 other end is connected with the cathode output end of the HVDC.First switch K1, the 3rd switch K3 and the 4th are opened
It is pressure common break-make switching device to close K4, and second switch K2 is controllable semiconductor switching device；First switch K1, second open
Close K2, the 3rd switch K3 and the 4th switch K4 is electrically connected with the controller；The controller is used to control first switch
K1, second switch K2, the 3rd switch K3 and the 4th switch K4 break-make and break-make order.
When needing to connect, the switches of first switch K1 and the 4th K4 is controlled all to connect, then control second switch K2 first
Connect, finally control the 3rd switch K3 to connect, so as to realize that high-voltage direct current switch device is connected.
When needing to disconnect, control the 3rd switch K3 to disconnect first, then control second switch K2 to disconnect, finally control the
One switch K1 and the 4th switch K4 disconnect, so as to realize that high-voltage direct current switch device disconnects.
In other embodiments, can be by first switch K1 and second switch K2 location swap.
In other embodiments, the 4th switch K4 can be connected to the electrode input end and cathode output end of HVDC
Between, what is obtained after first switch K1 is in parallel with the 3rd switch K3 after connecting with second switch K2 is electrically connected to HVDC
Between negative input and cathode output end.
Embodiment 4
As shown in figure 4, embodiment 4 is exactly one diode D1 of increase on the basis of embodiment 1, work as high-voltage direct current switch
When the backend load of device is battery, electric capacity, increase diode D1 can prevent reverse irrigated current.
Embodiment 5
As shown in figure 5, embodiment 5 is exactly one diode D1 of increase on the basis of embodiment 3, work as high-voltage direct current switch
When the backend load of device is battery, electric capacity, increase diode D1 can prevent reverse irrigated current.
It will be appreciated by those skilled in the art that accompanying drawing is a schematic diagram for being preferable to carry out scene, module in accompanying drawing or
Flow is not necessarily implemented necessary to the utility model.
It will be appreciated by those skilled in the art that the module in device in implement scene can be described according to implement scene into
Row is distributed in the device of implement scene, can also carry out one or more dresses that respective change is disposed other than this implement scene
In putting.The module of above-mentioned implement scene can be merged into a module, can also be further split into multiple submodule.
Above-mentioned the utility model sequence number is for illustration only, does not represent the quality of implement scene.Disclosed above is only this
Several specific implementation scenes of utility model, still, the utility model is not limited to this, any those skilled in the art's energy
Think of change should all fall into the scope of protection of the utility model.
Claims (10)
- A kind of 1. high-voltage direct current switch device, it is characterised in that including：First switch, second switch, third switch and control Device；The first switch and the 3rd switch are pressure common break-make switching device, and the second switch is partly led to be controllable Body switching device；The first switch, the second switch, the 3rd switch are electrically connected with the controller；It is described Controller be used for control the first switch, the second switch and the described 3rd switch on-off and break-make order；It is described First switch connected with the second switch after with the 3rd switch in parallel.
- 2. high-voltage direct current switch device according to claim 1, it is characterised in that the high-voltage direct current switch device is used for The positive pole of break-make HVDC；One end of the first switch is connected with the electrode input end of the HVDC, and described first The other end of switch is connected with one end of the second switch, the positive pole of the other end of the second switch and the HVDC Output end is connected；It is described 3rd switch one end be connected with the electrode input end of the HVDC, it is described 3rd switch it is another One end is connected with the cathode output end of the HVDC.
- 3. high-voltage direct current switch device according to claim 1, it is characterised in that the high-voltage direct current switch device is used for The positive pole of break-make HVDC；One end of the second switch is connected with the electrode input end of the HVDC, and described second The other end of switch is connected with one end of the first switch, the positive pole of the other end of the first switch and the HVDC Output end is connected；It is described 3rd switch one end be connected with the electrode input end of the HVDC, it is described 3rd switch it is another One end is connected with the cathode output end of the HVDC.
- 4. high-voltage direct current switch device according to claim 1, it is characterised in that the high-voltage direct current switch device is used for The negative pole of break-make HVDC；One end of the first switch is connected with the negative input of the HVDC, and described first The other end of switch is connected with one end of the second switch, the negative pole of the other end of the second switch and the HVDC Output end is connected；It is described 3rd switch one end be connected with the negative input of the HVDC, it is described 3rd switch it is another One end is connected with the cathode output end of the HVDC.
- 5. high-voltage direct current switch device according to claim 1, it is characterised in that the high-voltage direct current switch device is used for The negative pole of break-make HVDC；One end of the second switch is connected with the negative input of the HVDC, and described second The other end of switch is connected with one end of the first switch, the negative pole of the other end of the first switch and the HVDC Output end is connected；It is described 3rd switch one end be connected with the negative input of the HVDC, it is described 3rd switch it is another One end is connected with the cathode output end of the HVDC.
- 6. high-voltage direct current switch device according to claim 1, it is characterised in that the high-voltage direct current switch device also wraps The 4th switch is included, the 4th switch is pressure common break-make switching device, and the 4th switch electrically connects with the controller Connect；The high-voltage direct current switch device is used for the positive pole and negative pole of break-make HVDC；One end of the first switch with it is described The electrode input end of HVDC is connected, and the other end of the first switch is connected with one end of the second switch, and described The other end of two switches is connected with the cathode output end of the HVDC；One end of 3rd switch and the HVDC Electrode input end be connected, it is described 3rd switch the other end be connected with the cathode output end of the HVDC；Described 4th One end of switch is connected with the negative input of the HVDC, the other end and the HVDC of the 4th switch Cathode output end is connected.
- 7. high-voltage direct current switch device according to claim 1, it is characterised in that the high-voltage direct current switch device also wraps The 4th switch is included, the 4th switch is pressure common break-make switching device, and the 4th switch electrically connects with the controller Connect；The high-voltage direct current switch device is used for the positive pole and negative pole of break-make HVDC；One end of the second switch with it is described The electrode input end of HVDC is connected, and the other end of the second switch is connected with one end of the first switch, and described The other end of one switch is connected with the cathode output end of the HVDC；One end of 3rd switch and the HVDC Electrode input end be connected, it is described 3rd switch the other end be connected with the cathode output end of the HVDC；Described 4th One end of switch is connected with the negative input of the HVDC, the other end and the HVDC of the 4th switch Cathode output end is connected.
- 8. high-voltage direct current switch device according to claim 1, it is characterised in that the high-voltage direct current switch device also wraps The 4th switch is included, the 4th switch is pressure common break-make switching device, and the 4th switch electrically connects with the controller Connect；The high-voltage direct current switch device is used for the positive pole and negative pole of break-make HVDC；It is described 4th switch one end with it is described The electrode input end of HVDC is connected, and the other end of the 4th switch is connected with the cathode output end of the HVDC； One end of the first switch is connected with the negative input of the HVDC, the other end of the first switch and described the One end connection of two switches, the other end of the second switch are connected with the cathode output end of the HVDC；Described 3rd One end of switch is connected with the negative input of the HVDC, the other end and the HVDC of the 3rd switch Cathode output end is connected.
- 9. high-voltage direct current switch device according to claim 1, it is characterised in that the high-voltage direct current switch device also wraps The 4th switch is included, the 4th switch is pressure common break-make switching device, and the 4th switch electrically connects with the controller Connect；The high-voltage direct current switch device is used for the positive pole and negative pole of break-make HVDC；It is described 4th switch one end with it is described The electrode input end of HVDC is connected, and the other end of the 4th switch is connected with the cathode output end of the HVDC； One end of the second switch is connected with the negative input of the HVDC, the other end of the second switch and described the One end connection of one switch, the other end of the first switch are connected with the cathode output end of the HVDC；Described 3rd One end of switch is connected with the negative input of the HVDC, the other end and the HVDC of the 3rd switch Cathode output end is connected.
- 10. high-voltage direct current switch device according to claim 1, it is characterised in that the high-voltage direct current switch device is also Including diode, the diode is used to prevent reverse irrigated current.
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| CN201720832869.1U CN206894605U (en) | 2017-07-11 | 2017-07-11 | High-voltage direct current switch device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112104069A (en) * | 2020-11-19 | 2020-12-18 | 南京国信能源有限公司 | M direct current power supply modules and N output load switching module circuits |
| CN113359936A (en) * | 2021-05-27 | 2021-09-07 | 佛山市顺德区美的电子科技有限公司 | Power control method, power control circuit, device and household appliance |
| CN114256829A (en) * | 2021-11-29 | 2022-03-29 | 华为数字能源技术有限公司 | Power supply circuit and control method thereof |
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2017
- 2017-07-11 CN CN201720832869.1U patent/CN206894605U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112104069A (en) * | 2020-11-19 | 2020-12-18 | 南京国信能源有限公司 | M direct current power supply modules and N output load switching module circuits |
| CN113359936A (en) * | 2021-05-27 | 2021-09-07 | 佛山市顺德区美的电子科技有限公司 | Power control method, power control circuit, device and household appliance |
| CN113359936B (en) * | 2021-05-27 | 2023-10-03 | 佛山市顺德区美的电子科技有限公司 | Power control method, power control circuit, device and household appliance |
| CN114256829A (en) * | 2021-11-29 | 2022-03-29 | 华为数字能源技术有限公司 | Power supply circuit and control method thereof |
| WO2023093059A1 (en) * | 2021-11-29 | 2023-06-01 | 华为数字能源技术有限公司 | Power supply circuit and control method therefor |
| CN114256829B (en) * | 2021-11-29 | 2024-08-27 | 华为数字能源技术有限公司 | Power supply circuit and control method thereof |
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