CN208226665U - Power transfer device - Google Patents
Power transfer device Download PDFInfo
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- CN208226665U CN208226665U CN201820419462.0U CN201820419462U CN208226665U CN 208226665 U CN208226665 U CN 208226665U CN 201820419462 U CN201820419462 U CN 201820419462U CN 208226665 U CN208226665 U CN 208226665U
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Abstract
The utility model provides a kind of power transfer device comprising: switching switch is electrically connected at least two external power supplies；Overcurrent protection switch is electrically connected with switching switch；Electronic controller, detection are in the external power supply and the overcurrent protection switch of closing position, when power supply drift occurs in the detected external power supply, according to the action protection state of the overcurrent protection switch, control the switching action of the switching switch.The power transfer device of the utility model can avoid the generation of common power supply and backup power source short circuit accident, and its reliability is high, small in size, being quickly converted between common power supply and backup power source may be implemented, and to the effective protection of load-side route and equipment.
Description
Technical field
The utility model relates to low voltage electrical apparatus technology field more particularly to a kind of power transfer devices.
Background technique
Common power transfer device is also known as change-over switch, and change-over switch is the important electric appliance member in Low Voltage Electrical Apparatus
Part, the switching being mainly used between common power supply and backup power source, when power supply breaks down all the way, switch can be cut and go to another way
Power supply, the normal operation of proof load.Required according to code of building design, 1,2 grade of power load should use two-way or two-way with
Upper power supply power supply, change-over switch be exactly power supply switching core, be used in fire-fighting, traffic, communication, metallurgy, chemical industry, weaving,
Petroleum, coal mine etc. do not allow the important place having a power failure.
CB grades of change-over switches of existing derivation type are by two breakers, interlocking switching mechanism, switching mechanism controller, rack
It is formed etc. several parts.Motor load in the load of illumination class or all kinds of production activities, the conversion function of CB grades of change-over switches
It can guarantee power supply continuity；And the protection feature that it has, and payload security guarantee can be provided.
CB grades of change-over switches of the derivation type have that structure is complicated, volume is larger, reliability due to being made of several mechanisms
The problem of low, at high cost and switching motion relatively slow (about 1.5s or more).
In view of the above-mentioned problems, specifically, there is because commonly using power supply and backup power source caused by change-over switch failure
The major accident risk of short circuit.For example, mechanical interlock mechanism failure itself or circuit breaker handle fracture or breaker slide fastener, or
Cause mechanical interlock mechanism to fail when contact adhesion, switch can not be made to execute opening operation, if power supply will switch all the way at this time
To another way power supply, then necessarily lead to the major accident of two-way power supply short circuit.In order to solve this problem, common technical solution
It is to reduce risk, but such measure by further increasing mechanical interlocking or electric interlock between two breakers,
System complexity is inherently further increased, system reliability is created a further reduction.
Currently, the conversion action time of CB grades of change-over switches of derivation type is all long, it usually all will common and backup power source
Switching time elongate to 1.5s or more, there are two aspects for main cause, first is that consider to switch high inductive load (such as electronic
Machine) when avoid the cumulative impact caused by load and change-over switch of back-emf outer；Second is that CB grades of change-over switch itself knots of derivation type
Structure is complicated, and movement speed is too fast to further decrease whole reliability.Derivation type CB grades of change-over switch brings two-way as a result,
Longer power failure interval when power supply is converted.If such change-over switch is applied to low inductive load occasion, this power failure
Gap just becomes nonsensical, destroys power supply continuity instead.
Utility model content
The purpose of the utility model is to provide a kind of power transfer devices, can avoid common power supply and backup power source short circuit thing
Therefore generation, its reliability is high, small in size, being quickly converted between common power supply and backup power source may be implemented, and to load
The effective protection of side line road and equipment.
Following technical proposal can be used to realize in the above-mentioned purpose of the utility model:
The utility model provides a kind of power transfer device comprising:
Switching switch, is electrically connected at least two external power supplies；
Overcurrent protection switch is electrically connected with switching switch；
Electronic controller, detection are in the external power supply and the overcurrent protection switch of closing position, when detected
External power supply when there is power supply drift, according to the action protection state of the overcurrent protection switch, control the switching
The switching action of switch.
In the embodiments of the present invention, the switching switch has switch wire outlet terminal and at least two switch inlet wires
End, each external power supply are connected with the switch end of incoming cables, are equipped with switch movable contact and at least two in the switching switch
Switch static contact, the switch movable contact are connected with the switch wire outlet terminal, the switch static contact and the switch end of incoming cables
It is connected.
In the embodiments of the present invention, the overcurrent protection switch has overload leading-out terminal and overload end of incoming cables,
The overload end of incoming cables is connected with the switch wire outlet terminal, and overload moving contact and overload stationary contact are equipped in the overcurrent protection switch
Head, the overload moving contact are connected with the overload leading-out terminal, and the overload static contact is connected with the overload end of incoming cables.
In the embodiments of the present invention, at least two switch end of incoming cables is the first end of incoming cables and the second inlet wire
End, at least two external power supply are the first external power supply and the second external power supply, first end of incoming cables and described first
External power supply electrical connection, second end of incoming cables is electrically connected with second external power supply；At least two switch static contact
For first switch static contact and second switch static contact, the first switch static contact is connected with first end of incoming cables, described
Second switch static contact is connected with second end of incoming cables, the switch movable contact can respectively with the first switch static contact,
The second switch static contact contact or separation.
In the embodiments of the present invention, in the not operating protection of the overcurrent protection switch, and the switch movable contact
In the state that head is in contact with the first switch static contact, the electronic controller detects first external power supply and there is electricity
When the deviation of source, the electronic controller controls the switch movable contact and switches to connect with the second switch static contact.
In the embodiments of the present invention, also there is de-energized in the switching switch, in the switch movable contact
In the state of the de-energized, the switch movable contact mutually separates head at least two switch static contact.
In the embodiments of the present invention, in the state of the overcurrent protection switch action protection, the electronics
Controller controls the switch movable contact and separates at least two switch static contact.
In the embodiments of the present invention, the switching switch and overcurrent protection switch setting side by side up and down；
Alternatively, the switching switch and the overcurrent protection switch or so are arranged side by side.
In the embodiments of the present invention, the power transfer device includes an insulation crust, and the switching is opened
It closes and is mounted in the insulation crust with the overcurrent protection switch.
In the embodiments of the present invention, in the state of the overcurrent protection switch action protection, the overload
Direction spray arc of the protective switch to the switching switch.
In the embodiments of the present invention, the power transfer device includes two insulation crusts, and the switching is opened
It closes and is respectively arranged in two insulation crusts with the overcurrent protection switch.
In the embodiments of the present invention, it is connected directly between the switch wire outlet terminal and the overload end of incoming cables；
Alternatively, being indirectly connected between the switch wire outlet terminal and the overload end of incoming cables by conducting wire or connection row.
In the embodiments of the present invention, the switching switch has dynamic structure, and the dynamic structure is for driving
Move the switching action of the switching switch.
The characteristics of power transfer device of the utility model and advantage are: at least two external power supply is switched by power supply
Overcurrent protection switch in device carries out action protection, and the switching that switching switch can be realized under the control of electronic controller is dynamic
Make, which overload in the power transfer device be not required to judge, that is, can provide more quick protection, power supply switching dress
The structurally reasonable simplification set can improve the reliability of system conscientiously.It is short that the utility model can avoid at least two external power supplies
The generation of road accident, its reliability is high, small in size, being quickly converted between at least two external power supplies may be implemented, and to negative
Carry the effective protection of side line road and equipment.
Detailed description of the invention
It, below will be to required in embodiment description in order to illustrate more clearly of the technical scheme in the embodiment of the utility model
Attached drawing to be used is briefly described, it should be apparent that, the accompanying drawings in the following description is only some realities of the utility model
Example is applied, it for those of ordinary skill in the art, without creative efforts, can also be according to these attached drawings
Obtain other attached drawings.
Fig. 1 is the structural schematic diagram of the first embodiment of the power transfer device of the utility model.
Fig. 2 is the structural schematic diagram of the second embodiment of the power transfer device of the utility model.
Fig. 3 is the schematic view of the front view of the power transfer device of the utility model.
Fig. 4 is the side structure schematic view of the power transfer device of the utility model.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
As depicted in figs. 1 and 2, the utility model provides a kind of power transfer device comprising switching switch 1, overload
Protective switch 2 and electronic controller 3, in which: switching switch 1 is electrically connected at least two external power supplies 4；Overcurrent protection switch 2
It is electrically connected with the switching switch 1；Electronic controller 3, the external power supply 4 and the overload of the detection in closing position are protected
Switch 2 is protected, when power supply drift occurs in the detected external power supply 4, according to the action protection of the overcurrent protection switch 2
State controls the switching action of the switching switch 1.
As shown in Figure 1, the switching switch 1 has switch wire outlet terminal 11 in first possible embodiments of the utility model
With at least two switch ends of incoming cables 12, each external power supply 4 is connected with switch end of incoming cables 12, is equipped with switch movable contact in switching switch 1
First 13 and at least two switch static contacts 14, switch movable contact 13 be connected with switch wire outlet terminal 11, switch static contact 14 and switch
End of incoming cables 12 is connected.
The overcurrent protection switch 2 has overload leading-out terminal 21 and overload end of incoming cables 22, the overload end of incoming cables 22 and switchs out
Line end 11 is connected, which is connected with external loading, and overload moving contact 23 and mistake are equipped in the overcurrent protection switch 2
Static contact 24 is carried, which is connected with overload leading-out terminal 21, which is connected with overload end of incoming cables 22.
It in the present invention, can be indirect by conducting wire or connection row between the switch wire outlet terminal 11 and overload end of incoming cables 22
It is connected.Alternatively, as shown in figure 4, being connected directly between the switch wire outlet terminal 11 and overload end of incoming cables 22, the utility model is used and opened
It closes leading-out terminal 11 and overloads the mode that end of incoming cables 22 is directly connected to, wiring and the corresponding copper bar etc. when client uses can be reduced
Structure, thus the problems such as reducing current supply loss and resulting temperature rise.
As shown in Fig. 2, unlike embodiment illustrated in fig. 1, this is cut in second possible embodiments of the utility model
Changing also has de-energized 15, in the state that switch movable contact 13 is in de-energized 15, the switch movable contact 13 in switch 1
It is separated at least two switch static contacts, 14 phase.In this embodiment, when the switch movable contact 13 and at least two of switching switch 1
When switch static contact 14 is in the state of disconnection, it may be selected that switch movable contact 13 is made to be maintained at de-energized 15, this is cut at this time
It changes switch 1 and is in off-position.
Described in above-described embodiment switching switch 1 at least two switch ends of incoming cables 12 may include two, three or
More switch ends of incoming cables 12, at least two external power supplies 4 may include two, three or more external power supply 4, each switch
End of incoming cables 12 is corresponding with an external power supply 4 to be connected, and the not split quantity for putting line end 12 into and the quantity of external power supply 4 are done herein
Limitation.
Electronic controller 3 is electrically connected with switching switch 1, overcurrent protection switch 2 respectively, can detect in closing position
External power supply 4 and the overcurrent protection switch 2 are opened when power supply drift occurs in detected external power supply 4 according to the overload protection
2 action protection state is closed, which controls the switching switch 1 and switch over movement.
Specifically, when the overcurrent protection switch 2 encounters fault current, which will do it action protection,
Electronic controller 3 will not control switching switch 1 and switch over movement at this time.
When overcurrent protection switch 2 is in not operating guard mode, which can be detected in closing position
External power supply 4, namely detection switching switch 1 are in the external power supply 4 being correspondingly connected at closing position, in addition, the electronics control
Device 3 processed also detects other external power supplies 4 simultaneously, when there is power supply drift in the detected external power supply 4, for example (,) it is over-voltage, deficient
Pressure or decompression etc., the electronic controller 3 can control the switching switch 1 and switch over movement at this time.Specifically, in a kind of situation
Under, when this is detected and power supply drift occurs in external power supply 4 at the closing position, and other external power supplies 4 do not occur
When power supply drift, the electronic controller 3 can control the switching switch 1 from the external power supply 4 for power supply drift occur switch to not
The external power supply 4 for power supply drift occur connects；In another case, when power supply occur in detected all external power supplies
When deviation, it is electric from occurring which can be failure to actuate (first embodiment shown in FIG. 1) or control the switching switch 1
It is disconnected on the external power supply 4 of source deviation and is maintained at de-energized 15 (second embodiment shown in Fig. 2).
The power transfer device of the utility model, including switching switch 1, overcurrent protection switch 2 and electronics interconnected
Controller 3, the power transfer device have at least two switch ends of incoming cables 12 and overload leading-out terminal 21, at least two external power supplies
4 are connected at least two of power transfer device switch ends of incoming cables 12, the overload leading-out terminal 21 of the power transfer device with outside
Section load electrical connection.The action protection shape that at least two external power supply 4 passes through the overcurrent protection switch 2 in power transfer device
The switching action of switching switch 1 can be realized under the control of electronic controller 3, be not required to judge the power transfer device for state
Which interior overload, that is, can provide more quick protection, the structurally reasonable simplification of the power transfer device can mention conscientiously
The reliability of high system.
Below with two external power supplies 4, the switching switch 1 tool illustrates the electricity there are two for switch end of incoming cables 12
The structure of source switching device.
As depicted in figs. 1 and 2, this at least two switch end of incoming cables 12 be the first end of incoming cables 121 and the second end of incoming cables 122,
At least two external power supply 4 is the first external power supply 41 and the second external power supply 42, outside first end of incoming cables 121 and first
Power supply 41 is electrically connected, which is electrically connected with the second external power supply 42；At least two switch static contact 14 is the
One switch static contact 141 and second switch static contact 142, the first switch static contact 141 are connected with the first end of incoming cables 121, should
Second switch static contact 142 is connected with the second end of incoming cables 122, the switch movable contact 13 can respectively with first switch static contact 141,
The contact of second switch static contact 142 or separation.
The overload end of incoming cables 22 of the overcurrent protection switch 2 is connected with the switch wire outlet terminal 11 of switching switch 1, the overload protection
The overload leading-out terminal 21 of switch 2 with external loading for being connected.As shown in figure 3, the overcurrent protection switch 2 has operating mechanism
27, the controllable overload moving contact 23 of on/off switch and overload static contact 24 which passes through the operating mechanism 27
It connects or is detached from；When encountering fault current in the line, which can be carried out action protection namely its overload is dynamic
Contact 23 and overload static contact 24 can be opened rapidly.The switching switch 1 has auxiliary contact 17, which has
Auxiliary contact 28, the electronic controller 3 are electrically connected with auxiliary contact 17 and auxiliary contact 28 respectively, which can examine
The signal for surveying auxiliary contact 28, to obtain the action protection state of overcurrent protection switch 2.
In 2 not operating protection of overcurrent protection switch, that is, the overload moving contact 23 of overcurrent protection switch 2 and overload are quiet
Contact 24 is in the state of closing position, at this point, when the switch movable contact 13 is in contact with first switch static contact 141, it should
Electronic controller 3 can detect first external power supply 41, if first external power supply 41 there are power supply drift, and the second external electrical
When 42 power supply of source is normal, the electronic controller 3 meeting control switch moving contact 13 is switched to connect with second switch static contact 142.
Conversely, in the not operating protection of overcurrent protection switch 2, and the switch movable contact 13 and 142 phase of second switch static contact
When contact, which detects second external power supply 42, if the second external power supply 42 there are when power supply drift, and the
When one external power supply, 41 power supply is normal, the electronic controller 3 meeting control switch moving contact 13 is switched to and first switch static contact
141 connect.
In the present embodiment, first external power supply 41 and the second external power supply 42 may respectively be common power supply and/or standby
With power supply, when common power supply is in closing position, backup power source is in open position, if commonly using power supply at this time, power supply occur inclined
Difference, such as over-voltage, under-voltage or decompression, electronic controller 3 detect the power supply drift of common power supply, and when backup power source is normal,
Electronic controller 3 can issue signal to switching switch 1, so that the switch movable contact 13 of switching switch 1 be driven to switch over movement.
The electronic controller 3 detects external power supply 4, while the electronic controller 3 can detect 121 He of first switch end of incoming cables
The signal of second switch end of incoming cables 122, that is, the signal of detection auxiliary contact 17, to obtain the switch movable contact of switching switch 1
First 13 location status (is connected that is, detecting the switch movable contact 13 with first switch end of incoming cables 121, or and second switch
End of incoming cables 122 is connected), pass through the conjunction of the control switching switch 1 of switch movable contact 13 after 3 logic judgment of electronic controller again later
Or point.
In 2 action protection of overcurrent protection switch, that is, the overload moving contact 23 of the overcurrent protection switch 2 and overload are quiet
When contact 24 is in the state of open position, at this point, the 3 controllable switch moving contact 13 of electronic controller and at least two switches
The separation of static contact 14 namely the 3 control switch moving contact 13 of electronic controller and first switch static contact 141 or second switch are quiet
Contact 142 separates.When the switching switch 1 has de-energized 15, the 3 controllable switch moving contact 13 of electronic controller rotation
To de-energized 15.
In addition, the electronic controller 3 can not also cut the switching switch 1 in 2 action protection of overcurrent protection switch
Change action control.
An embodiment according to the present utility model, as shown in figure 3, in a possible embodiments, the switching switch 1 with
The setting side by side up and down of overcurrent protection switch 2, the switching switch 1 are located at the lower section of at least two external power supplies 4, which opens
Close 2 lower sections for being located at switching switch 1；Alternatively, in another possible embodiments, the switching switch 1 and overcurrent protection switch 2 or so
It is arranged side by side, which is located at the lower section of at least two external power supplies 4.
Further, as shown in figure 3, the power transfer device may include an insulation crust 5, switching switch 1 and overload
Protective switch 2 is mounted in insulation crust 5, namely switching switch 1 and 2 integral arrangement of overcurrent protection switch.In this embodiment,
When the overcurrent protection switch 2 carries out action protection, which understands the direction spray arc to switching switch 1,
That is, when overcurrent protection switch 2 receives fault current action protection, the overload moving contact 23 and overload of overcurrent protection switch 2
Static contact 24 is opened rapidly, and outside spray arc, the electric arc can spray to the front cavity 25 of overcurrent protection switch 2, can also be with
Spray to the rear cavity 26 of overcurrent protection switch 2, naturally it is also possible to while anteriorly cavity 25 and rear cavity 26 are sprayed, with right
Load is protected.Certainly, the utility model is preferably directed towards the direction spray arc of switching switch 1, namely towards overload protection
25 spray arc of front cavity of switch 2.
In another embodiment, which may include two insulation crusts, and switching switch 1 is opened with overload protection
It closes 2 to be respectively arranged in two insulation crusts, namely switching switch 1 arrangement seperated with overcurrent protection switch 2.
An embodiment according to the present utility model, the switching switch 1 have dynamic structure 16, which uses
In the switching action of the switch movable contact 13 of driving switching switch 1.That is, the electronic controller 3 controls dynamic structure 16, thus
The switching action of the switch movable contact 13 of control switching switch 1.Certainly, the switching of the switch movable contact 13 of the switching switch 1 is dynamic
Make can also manual switching, herein with no restrictions.
In power supply continuity and load short circuits error protection occasion of equal importance, this power supply with overcurrent protection switch
Switching device, since its switch movable contact 13 for switching switch 1 can quickly switch between at least two switch static contacts 14,
Its conversion speed is very fast, so as to provide the ability that multiple power supplies are quickly converted for low inductive load, effectively increases simultaneously
Power supply continuity, and its overcurrent protection switch 2 carries out protection act when load short circuits failure occurs and ensures payload security, effectively
Improve Supply Security.
The foregoing is merely several embodiments of the utility model, and those skilled in the art is according to disclosed in application documents
Content can carry out various changes or modifications without departing from the spirit and scope of the utility model to the utility model embodiment.
Claims (13)
1. a kind of power transfer device characterized by comprising
Switching switch, is electrically connected at least two external power supplies；
Overcurrent protection switch is electrically connected with switching switch；
Electronic controller, detection are in the external power supply and the overcurrent protection switch of closing position, when detected institute
When stating external power supply and power supply drift occur, according to the action protection state of the overcurrent protection switch, controls the switching and switch
Switching action.
2. power transfer device as described in claim 1, which is characterized in that the switching switch is with switch wire outlet terminal and extremely
Few two switch ends of incoming cables, each external power supply are connected with the switch end of incoming cables, and it is dynamic to be equipped with switch in the switching switch
Contact and at least two switch static contacts, the switch movable contact are connected with the switch wire outlet terminal, the switch static contact with
The switch end of incoming cables is connected.
3. power transfer device as claimed in claim 2, which is characterized in that the overcurrent protection switch has overload leading-out terminal
With overload end of incoming cables, the overload end of incoming cables is connected with the switch wire outlet terminal, and it is dynamic that overload is equipped in the overcurrent protection switch
Contact and overload static contact, the overload moving contact are connected with the overload leading-out terminal, the overload static contact and the overload
End of incoming cables is connected.
4. power transfer device as claimed in claim 2, which is characterized in that it is described at least two switch end of incoming cables be first into
Line end and the second end of incoming cables, at least two external power supply be the first external power supply and the second external power supply, described first into
Line end is electrically connected with first external power supply, and second end of incoming cables is electrically connected with second external power supply；It is described at least
Two switch static contacts are first switch static contact and second switch static contact, the first switch static contact with described first into
Line end is connected, and the second switch static contact is connected with second end of incoming cables, and the switch movable contact can be respectively with described the
One switch static contact, second switch static contact contact or separation.
5. power transfer device as claimed in claim 4, which is characterized in that in the not operating protection of the overcurrent protection switch,
And in the state that the switch movable contact is in contact with the first switch static contact, the electronic controller detection described first
There are when power supply drift, the electronic controller control switch movable contact switches to quiet with the second switch external power supply
Contact connects.
6. power transfer device as claimed in claim 2, which is characterized in that also there is de-energized in the switching switch,
In the state that the switch movable contact is in the de-energized, the switch movable contact and at least two switch stationary contact
Head mutually separates.
7. the power transfer device as described in claim 2 or 6, which is characterized in that in the overcurrent protection switch action protection
In the state of, the electronic controller controls the switch movable contact and separates at least two switch static contact.
8. power transfer device as described in claim 1, which is characterized in that the switching switch and the overcurrent protection switch
Setting side by side up and down；Alternatively, the switching switch and the overcurrent protection switch or so are arranged side by side.
9. power transfer device as claimed in claim 1 or 8, which is characterized in that the power transfer device includes one exhausted
Edge shell, the switching switch are mounted in the insulation crust with the overcurrent protection switch.
10. power transfer device as claimed in claim 9, which is characterized in that in the overcurrent protection switch action protection
Under state, direction spray arc of the overcurrent protection switch to the switching switch.
11. power transfer device as claimed in claim 1 or 8, which is characterized in that the power transfer device includes two exhausted
Edge shell, the switching switch are respectively arranged in two insulation crusts with the overcurrent protection switch.
12. power transfer device as claimed in claim 3, which is characterized in that the switch wire outlet terminal and the overload inlet wire
It is connected directly between end；Alternatively, arranging indirect phase by conducting wire or connection between the switch wire outlet terminal and the overload end of incoming cables
Even.
13. power transfer device as described in claim 1, which is characterized in that the switching switch has dynamic structure, described
Dynamic structure is used to drive the switching action of the switching switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820419462.0U CN208226665U (en) | 2018-03-27 | 2018-03-27 | Power transfer device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820419462.0U CN208226665U (en) | 2018-03-27 | 2018-03-27 | Power transfer device |
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| Publication Number | Publication Date |
|---|---|
| CN208226665U true CN208226665U (en) | 2018-12-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820419462.0U Active CN208226665U (en) | 2018-03-27 | 2018-03-27 | Power transfer device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108306411A (en) * | 2018-03-27 | 2018-07-20 | 北京京人电器有限公司 | Power transfer device |
| CN112992564A (en) * | 2019-12-17 | 2021-06-18 | 北京京人电器有限公司 | Phase-change switch |
-
2018
- 2018-03-27 CN CN201820419462.0U patent/CN208226665U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108306411A (en) * | 2018-03-27 | 2018-07-20 | 北京京人电器有限公司 | Power transfer device |
| CN108306411B (en) * | 2018-03-27 | 2024-05-07 | 北京京人电器有限公司 | Power supply switching device |
| CN112992564A (en) * | 2019-12-17 | 2021-06-18 | 北京京人电器有限公司 | Phase-change switch |
| CN112992564B (en) * | 2019-12-17 | 2023-11-28 | 北京京人电器有限公司 | Phase change switch |
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