CN205829459U - Converter circuit - Google Patents
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- CN205829459U CN205829459U CN201620358426.9U CN201620358426U CN205829459U CN 205829459 U CN205829459 U CN 205829459U CN 201620358426 U CN201620358426 U CN 201620358426U CN 205829459 U CN205829459 U CN 205829459U
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Abstract
A kind of converter circuit, including rectification circuit, power on charging circuit and accumulator, the input of described rectification circuit and power supply R phase, power supply S-phase and power supply T-phase connect, and the outfan of rectification circuit is connected with accumulator, with the connection of the charging circuit that powers on the while of the outfan of rectification circuit；The described charging circuit that powers on includes that multiple relay being connected in parallel shunts, and multiple relays are connected between the outfan of rectification circuit and accumulator.This utility model converter circuit uses multiple relays being connected in parallel to shunt charging current；When converter needs bigger charging current, bigger charging current can be shunted by multiple relays, reduces the cost of product, reduces the volume of converter.Two relays are used to shunt.
Description
Technical field
This utility model relates to Low Voltage Electrical Apparatus, particularly to a kind of converter, is specifically related to a kind of converter circuit.
Background technology
In the description of existing converter, typically can indicate after a loss of power, dc bus has high pressure, it should wait
After the time specified, can touch, or artificially electric capacity be discharged, by electric capacity electric discharge standard security operation, can after being discharged
Continue operation.The time that different converters waits after a loss of power is different, and converter the most significantly indicates display mother
Line voltage has disappeared, and now just carries out maintenance of uncapping without going through description, it is easy to cause personal injury；?
In converter power supply plate R&D process, after power-off, research staff is when test and debugging, after can only waiting the regular hour by rule of thumb
Could touch, there is the biggest potential safety hazard.
It addition, in middle low power converter, when needing bigger charging current for charging, it is necessary to select resistance to big electric current
Relay.The resistance to electric current of relay is big, its coil also can overstriking therewith, the volume of relay increases, causes the body of converter
Long-pending increase, affects the miniaturization of middle low power converter, also can increase the cost of product simultaneously.
In the control system that converter motor is constituted, any one functional unit, any one components and parts break down all
It is possible, but the probability motor to be significantly larger than that inverter section breaks down.And in converter, opening of inverter bridge IGBT
Road and short trouble account for again sizable proportion.IGBT open fault happens occasionally, and is on the one hand owing to stream excessively burns, causes
Open circuit, is on the other hand the driving signal open circuit owing to wiring is bad, drive the reasons such as broken string to cause.Relative to short trouble
Speech, after open fault generation, often motor can also continue to run with, so being difficult to be found, but its harm is relatively big, because at this
In the case of remaining IGBT will flow through bigger electric current, easily there is over current fault；And current of electric exists direct-current component, meeting
Cause the problems such as torque reduction, heating, insulation damages, as processed open fault not in time, bigger fault will be caused.Giving birth to
Produce and in research and development of products, after the most directly powering on to converter, if drive circuit or switch power module go wrong, very
Aircraft bombing situation easily occurs, causes the loss of personnel and property.
Summary of the invention
The purpose of this utility model is to overcome the defect of prior art, it is provided that a kind of simple in construction, performance safety is stable
Converter circuit.
For achieving the above object, this utility model adopts the technical scheme that
A kind of converter circuit, including rectification circuit, power on charging circuit and accumulator 4, described rectification circuit defeated
Entering end and power supply R phase, power supply S-phase and power supply T-phase to connect, the outfan of rectification circuit is connected with accumulator 4, rectification circuit
Outfan simultaneously with the connection of the charging circuit that powers on；The described charging circuit that powers on includes that multiple relay being connected in parallel is carried out point
Stream, multiple relays are connected between the outfan of rectification circuit and accumulator 4.
Further, power switching module, transformator, cpu control circuit, drive circuit and inverter IGBT mould are also included
Block；The outfan of charging circuit that powers on is connected with the input of power switching module, the outfan of power switching module and transformation
Device connects, and output control signal Vout to transformator controls transformator work, and the outfan of transformator is defeated with cpu control circuit
Entering end to be connected as cpu control circuit and power, the outfan of cpu control circuit is connected with the input of drive circuit, to driving electricity
Road sends drive control signal, and the outfan of drive circuit is connected with the input of inverter IGBT module, to inverter IGBT
Module sends drive waveforms, and the input of inverter IGBT module is connected with the outfan of accumulator 4 simultaneously；Rectification circuit is defeated
Go out two-way unidirectional current, be respectively connecting to dc bus P pole and dc bus N pole.
Further, described relay is two, respectively relay R Y1 and relay R Y2, described in power on charging circuit also
Including current-limiting resistance R5 and current-limiting resistance R6, one end of normally opened contact K1 of relay R Y1 is connected with the outfan of rectification circuit,
The other end is connected with accumulator 4, and the two ends after current-limiting resistance R5 and current-limiting resistance R6 is connected in series are connected in parallel respectively
The two ends of the normally opened contact K1 of relay R Y1, the normally opened contact K1 of relay R Y1 connects with the normally opened contact K2 of relay R Y2
Connecting, one end driving coil of relay R Y1 is connected with power supply VCC, the other end and one end driving coil of relay R Y2
Connecting, the other end driving coil of relay R Y2 is connected with power supply VCC.
Further, described rectification circuit is full-wave rectifying circuit；Rectification circuit includes diode VD1, diode VD2, two
Pole pipe VD3, diode VD4, diode VD5 and diode VD6；Diode VD3 and diode VD6, diode VD2 and diode
VD5 and diode VD1 is connected in series respectively with diode VD4, and the positive pole of diode VD1 is connected with diode VD4 negative pole, two poles
The positive pole of pipe VD2 is connected with the negative pole of diode VD5, and the positive pole of diode VD3 is connected with the negative pole of diode VD6, diode
VD1 and diode VD4, diode VD2 are respectively connecting to the intermediate node of diode VD5 and diode VD3 and diode VD6
Power supply R phase, power supply S-phase and power supply T-phase, the negative pole of diode VD1, diode VD2 and diode VD3 is connected to dc bus P
Pole, the positive pole of diode VD4, diode VD5 and diode VD6 is connected to dc bus N pole.
Further, described power switching module includes power supply control chip, reduction voltage circuit 1, starts resistance R4 and voltage stabilizing electricity
Road 3；The input of described reduction voltage circuit 1 and dc bus P pole are connected to blood pressure lowering, start one end and the reduction voltage circuit of resistance R4
The outfan of 1 connects, and the input of mu balanced circuit 3 is connected with the other end starting resistance R4 and dc bus N pole, mu balanced circuit
The outfan of 3 is connected with the input of power supply control chip, and the outfan of power supply control chip is connected with transformator, to transformator
Output control signal Vout controls transformator work.
Further, described reduction voltage circuit 1 includes that resistance R1, resistance R2 and resistance R3, resistance R1, resistance R2 and resistance R3 depend on
Secondary being connected in series, one end of resistance R1 is connected with dc bus P pole, and one end of resistance R3 is connected with the one end starting resistance R4；
Described mu balanced circuit 3 include stabilivolt ZD1 and electric capacity C1, stabilivolt ZD1 and electric capacity C1 be connected in parallel after and stabilivolt ZD1 just
Pole is connected with dc bus N pole, and the negative pole of stabilivolt ZD1 is connected with the other end starting resistance R4, and the two ends of stabilivolt ZD1 are same
Time be connected in the input of power supply control chip in parallel, electric capacity C1 is connected in the defeated of stabilivolt ZD1 and power supply control chip in parallel
Enter between end.
Further, described accumulator 4 includes the output of charging capacitor E1, the positive pole of charging capacitor E1 and reduction voltage circuit 1
End connects, and the negative pole of charging capacitor E1 is connected with the input of mu balanced circuit 3.
Further, described accumulator 4 also includes that electric capacity C2, electric capacity C2 are connected in parallel in the two ends of charging capacitor E1.
Further, also include that LED 1, described light emitting diode are connected in the two ends starting resistance R4 in parallel.
Further, described in power on and between charging circuit with power switching module, be connected the resistance R8 of 0 Ω having for debugging,
When debugging, 0 Ω resistance is disconnected, for subsequent detection power switching module, cpu control circuit, drive circuit and inverter
IGBT module the most normally works.
This utility model converter circuit uses multiple relays being connected in parallel to shunt charging current；Work as frequency conversion
When device needs bigger charging current, bigger charging current can be shunted by multiple relays, reduces the cost of product,
Reduce the volume of converter.Two relays are used to shunt.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of this utility model converter circuit；
Fig. 2 is the main circuit diagram of this utility model converter circuit；
Fig. 3 is the circuit diagram of a kind of embodiment of the power switching module of this utility model converter circuit.
Detailed description of the invention
The embodiment be given below in conjunction with accompanying drawing 1 to 3, further illustrates the concrete real of converter circuit of the present utility model
Execute mode.Converter circuit of the present utility model is not limited to the following description.
As it is shown in figure 1, this utility model converter circuit, including rectification circuit, power on charging circuit, accumulator 4, electricity
Source switch module, transformator, cpu control circuit, drive circuit and inverter IGBT module.Specifically, described rectification circuit
Input and power supply R phase, power supply S-phase and power supply T-phase connect, and the outfan of rectification circuit is connected with accumulator 4, rectification circuit
Outfan simultaneously with the connection of the charging circuit that powers on, the outfan of the charging circuit that powers on and the input of power switching module and
Inverter IGBT module connects, and the outfan of power switching module is connected with transformator, and output control signal Vout is to transformator
Controlling transformator work, the outfan of transformator is connected as cpu control circuit with the input of cpu control circuit and powers, and CPU is controlled
The outfan of circuit processed is connected with the input of drive circuit, sends drive control signal to drive circuit, drive circuit defeated
Go out end to be connected with the input of inverter IGBT module, send drive waveforms, inverter IGBT module to inverter IGBT module
Input be connected with the outfan of accumulator 4 simultaneously.
Specifically, rectification circuit, power on charging circuit, and accumulator 4 is the main circuit of converter, power switching module,
Transformator, cpu control circuit, drive circuit and inverter IGBT module are the peripheral circuit of converter.Rectification circuit output two
Road unidirectional current, is respectively connecting to dc bus P pole and dc bus N pole.
As it is shown in figure 1, this utility model converter circuit has powering on to be connected between charging circuit with power switching module
For 0 Ω resistance R8 of debugging, power supply HVDC is separated with power switching module, when debugging, 0 Ω resistance R8 is broken
Open, be used for detecting power switching module, cpu control circuit, drive circuit and inverter IGBT module and the most normally work.This reality
The resistance that resistance value is close to 0 is referred to, owing to there is certain error, it is generally recognized that resistance value with 0 Ω resistance R8 in novel
＜ 50m Ω is i.e. regarded as 0 Ω resistance.This utility model converter circuit is powering between charging circuit and power switching module
It is connected to the resistance R8 of 0 Ω of debugging, when debugging, 0 Ω resistance is disconnected, for subsequent detection power switching module, CPU
Control circuit, drive circuit and inverter IGBT module the most normally work, easy to operate, prevent peripheral circuit from breaking down and draw
Play aircraft bombing, improve the security performance of converter.
The charging circuit that powers on described in as it is shown in figure 1, includes current-limiting resistance R5, current-limiting resistance R6 and relay R Y1, relay
The two ends of RY1 are connected between dc bus P pole and inverter IGBT module, specifically, the normally opened contact K1 of relay R Y1
Two ends are connected between dc bus P pole and the input of power switching module, drive one end of coil to be connected to+24V power supply,
The other end is connected with cpu control circuit.In embodiment, current-limiting resistance R5 and two current-limiting resistances of current-limiting resistance R6 are used to limit
Stream, current-limiting resistance is it can also be provided that one or more.Also include diode D1, the positive pole of diode D1 and relay
One end driving coil of RY1 connects, and the negative pole of diode D1 is connected with the other end driving coil of relay R Y1.
In the moment powered on, the normally opened contact K1 of relay R Y1 is off-state, by current-limiting resistance R5 and current-limiting resistance
Charging capacitor E1 is charged by R6, and after the voltage at charging capacitor E1 two ends reaches certain value, the normally opened contact K1 of relay R Y1 inhales
Closing, now, current-limiting resistance R5 and current-limiting resistance R6 is shorted.Now dc bus directly flows through from relay, according to converter
The difference of power, can select the relay of different withstanding current capability.
As in figure 2 it is shown, this utility model powers on, charging circuit uses multiple relay R Y1 being connected in parallel and relay
Charging current is shunted by RY2.In figure, embodiment is two relay R Y1 being connected in parallel and relay R Y2, works as converter
When needing bigger charging current, bigger charging current can be shunted by two relays, reduces the cost of product, subtracts
The volume of little converter.
Specifically, the two ends after current-limiting resistance R5 and current-limiting resistance R6 is connected in series are connected in relay R Y1 respectively in parallel
The two ends of normally opened contact K1, the normally opened contact K1 of relay R Y1 is connected in series with the normally opened contact K2 of relay R Y2, relay
One end driving coil of device RY1 is connected with power supply VCC, and the other end is connected with one end driving coil of relay R Y2, relay
Device RY2 drive coil the other end be connected with power supply VCC, the normally opened contact K1 other end of relay R Y1 and with accumulator 4
Connect.
As it is shown on figure 3, described power switching module includes power supply control chip, reduction voltage circuit 1, start indicating circuit 2 He
Mu balanced circuit 3；The input of described reduction voltage circuit 1 and dc bus P pole are connected to blood pressure lowering, start the input of indicating circuit 2
End is connected in indicating circuit whether exist electric current with the outfan of reduction voltage circuit 1, and the input of mu balanced circuit 3 refers to startup
Showing that outfan and the dc bus N pole of circuit 2 connect, the outfan of mu balanced circuit 3 is connected with the input of power supply control chip,
The outfan of power supply control chip is connected with transformator, controls transformator work to transformator output control signal Vout.Above-mentioned 0
One end of Ω resistance is connected with the one end starting resistance R4 simultaneously.
The resistance R8 of 0 Ω is accessed, in debugging between the startup resistance R4 of dc bus P pole and power switching module
During circuit board, resistance R8 is disconnected, with the external input direct voltage of direct current, now except the main circuit of converter, other electricity
Road can normally work, and the most just can test power switching module and drive waveforms correctness, gets rid of peripheral circuit and goes out
The aircraft bombing that existing fault causes；After determining that the control signals such as drive waveforms are out of question, the resistance R8 of 0 Ω is welded back, then give frequency conversion
Alternating current connected by device, and now, peripheral circuit just starts to power to peripheral circuits such as power switching modules by rectifier bridge.
As shown in Figure 1, 2, described rectification circuit is full-wave rectifying circuit, including diode VD1, diode VD2, diode
VD3, diode VD4, diode VD5 and diode VD6；Diode VD3 and diode VD6, diode VD2 and diode VD5
Being connected in series respectively with diode VD4 with diode VD1, the positive pole of diode VD1 is connected with diode VD4 negative pole, diode
The positive pole of VD2 is connected with the negative pole of diode VD5, diode VD3 and diode VD6, diode VD1 and diode VD4, two poles
The intermediate node of pipe VD2 and diode VD5 and diode VD3 and diode VD6 is respectively connecting to power supply R phase, power supply S-phase, electricity
Source T-phase, the negative pole of diode VD1, diode VD2 and diode VD3 is connected to dc bus P pole, diode VD4, diode
The positive pole of VD5 and diode VD6 is connected to dc bus N pole.
Include starting resistance R4 and LED 1 as it is shown on figure 3, start indicating circuit 2, start resistance R4 and send out
Optical diode LED1 is connected in parallel, start the two ends of resistance R4 respectively with outfan and the input of mu balanced circuit 3 of reduction voltage circuit 1
End connects, and LED 1 is connected in the two ends (as shown in Figure 3) starting resistance R4 in parallel.This utility model converter
Power switching module includes power supply control chip, reduction voltage circuit, starts indicating circuit and mu balanced circuit, starts indicating circuit and includes
Start resistance R4 and LED 1, be connected in parallel a LED 1 starting on resistance R4, can be accurate
Busbar voltage in ground instruction converter, can effectively protect operator's personal safety, can shorten operator's simultaneously
Waiting time, improve production efficiency.
In power switching module, on the startup resistance R4 of power supply control chip, a LED 1 in parallel
Display lamp, when converter is energized, the electric current on dc bus is powered to power supply control chip by starting resistance R4, power supply control
Coremaking sheet output control signal Vout controls transformator work.Described power supply control chip is UC3844 chip.
As Figure 1-3, described accumulator 4 includes charging capacitor E1, the positive pole of charging capacitor E1 and reduction voltage circuit 1
Outfan connects, and the negative pole of charging capacitor E1 is connected with the input of mu balanced circuit 3.Also including electric capacity C2, electric capacity C2 parallel connection is even
It is connected to the two ends of charging capacitor E1.
As it is shown on figure 3, described reduction voltage circuit 1 includes resistance R1, resistance R2 and resistance R3, resistance R1, resistance R2 and resistance
R3 is sequentially connected in series, and one end of resistance R1 is connected with dc bus P pole, and one end of resistance R3 is defeated with startup indicating circuit 2
Go out end to connect.Reduction voltage circuit 1 carries out blood pressure lowering to circuit, and the resistance number that reduction voltage circuit uses can also be single or more
Dropping resistor is connected in circuit.
As shown in Figure 1-2, described mu balanced circuit 3 includes that stabilivolt ZD1 and electric capacity C1, stabilivolt ZD1 and electric capacity C1 are in parallel
After connection, the positive pole with stabilivolt ZD1 is connected with dc bus N pole, the negative pole of stabilivolt ZD1 and the output starting indicating circuit 2
End connects, and the two ends of stabilivolt ZD1 are connected in the input of power supply control chip in parallel simultaneously, and electric capacity C1 is connected in voltage stabilizing in parallel
Between pipe ZD1 and the input of power supply control chip.
The operation principle of the power switching module of converter is described below:
In power switching module, on the startup resistance R4 of power supply control chip, a LED 1 in parallel
Display lamp, when converter is energized, the electric current on dc bus is powered to power supply control chip by starting resistance R4, power supply control
Coremaking sheet output control signal Vout controls transformator work.
In the dc bus moment by electric current, LED 1 begins to shinny, and operator have been known that electricity
Pass through, Do not touch circuit board；When converter power-off, the power supply control chip feedback by sample rate current, stop transformator,
Now power supply control chip is powered by starting resistance R4 by charging capacitor E1, and now the voltage at charging capacitor E1 two ends is exactly straight
Voltage between stream bus P pole and N pole, until after the voltage at charging capacitor E1 two ends all disappears, LED 1
Brightness just can disappear, and at this moment circuit board can be operated by operator, it is ensured that personal safety.
Above content is to combine concrete preferred implementation further detailed description of the utility model, it is impossible to
Assert that of the present utility model being embodied as is confined to these explanations.Ordinary skill for this utility model art
For personnel, without departing from the concept of the premise utility, it is also possible to make some simple deduction or replace, all should regard
For belonging to protection domain of the present utility model.
Claims (10)
1. a converter circuit, it is characterised in that: including rectification circuit, power on charging circuit and accumulator (4), described whole
The input of current circuit and power supply R phase, power supply S-phase and power supply T-phase connect, and the outfan of rectification circuit is with accumulator (4) even
Connect, the outfan of rectification circuit simultaneously with the connection of the charging circuit that powers on；The described charging circuit that powers on includes multiple being connected in parallel
Relay shunt, multiple relays are connected between the outfan of rectification circuit and accumulator (4).
Converter circuit the most according to claim 1, it is characterised in that: also include power switching module, transformator, CPU
Control circuit, drive circuit and inverter IGBT module；Power on the outfan of charging circuit and the input of power switching module
Connecting, the outfan of power switching module is connected with transformator, and output control signal Vout to transformator controls transformator work,
The outfan of transformator is connected as cpu control circuit with the input of cpu control circuit and powers, the outfan of cpu control circuit
It is connected with the input of drive circuit, sends drive control signal to drive circuit, the outfan of drive circuit and inverter
The input of IGBT module connects, and sends drive waveforms to inverter IGBT module, and the input of inverter IGBT module is simultaneously
It is connected with the outfan of accumulator (4)；Rectification circuit output two-way unidirectional current, is respectively connecting to dc bus P pole and direct current
Bus N pole.
Converter circuit the most according to claim 1 and 2, it is characterised in that: described relay is two, respectively relay
Device RY1 and relay R Y2, described in the charging circuit that powers on also include current-limiting resistance R5 and current-limiting resistance R6, relay R Y1 normally opened
One end of contact K1 is connected with the outfan of rectification circuit, and the other end is connected with accumulator (4), current-limiting resistance R5 and current limliting
Two ends after resistance R6 is connected in series are connected in the two ends of normally opened contact K1 of relay R Y1 respectively in parallel, relay R Y1 normal
The normally opened contact K2 opening contact K1 and relay R Y2 is connected in series, relay R Y1 drive one end of coil with power supply VCC even
Connecing, the other end is connected with one end driving coil of relay R Y2, the other end driving coil of relay R Y2 and power supply VCC
Connect.
Converter circuit the most according to claim 2, it is characterised in that: described rectification circuit is full-wave rectifying circuit；Whole
Current circuit includes diode VD1, diode VD2, diode VD3, diode VD4, diode VD5 and diode VD6；Diode
VD3 and diode VD6, diode VD2 are connected in series with diode VD4 respectively with diode VD5 and diode VD1, diode
The positive pole of VD1 is connected with diode VD4 negative pole, and the positive pole of diode VD2 is connected with the negative pole of diode VD5, diode VD3's
Positive pole is connected with the negative pole of diode VD6, diode VD1 and diode VD4, diode VD2 and diode VD5 and diode
The intermediate node of VD3 and diode VD6 is respectively connecting to power supply R phase, power supply S-phase and power supply T-phase, diode VD1, diode
The negative pole of VD2 and diode VD3 is connected to dc bus P pole, and the positive pole of diode VD4, diode VD5 and diode VD6 is even
It is connected to dc bus N pole.
Converter circuit the most according to claim 2, it is characterised in that: described power switching module includes that power supply controls core
Sheet, reduction voltage circuit (1), start resistance R4 and mu balanced circuit (3)；The input of described reduction voltage circuit (1) is with dc bus P pole even
Connecing for blood pressure lowering, the one end starting resistance R4 is connected with the outfan of reduction voltage circuit (1), the input of mu balanced circuit (3) with open
The other end and the dc bus N pole of galvanic electricity resistance R4 connect, and the outfan of mu balanced circuit (3) connects with the input of power supply control chip
Connecing, the outfan of power supply control chip is connected with transformator, controls transformator work to transformator output control signal Vout.
Converter circuit the most according to claim 5, it is characterised in that: described reduction voltage circuit (1) includes resistance R1, resistance
R2 and resistance R3, resistance R1, resistance R2 and resistance R3 are sequentially connected in series, and one end of resistance R1 is connected with dc bus P pole, electricity
One end of resistance R3 is connected with the one end starting resistance R4；Described mu balanced circuit (3) includes stabilivolt ZD1 and electric capacity C1, stabilivolt
ZD1 and electric capacity C1 is connected with dc bus N pole with the positive pole of stabilivolt ZD1 after being connected in parallel, the negative pole of stabilivolt ZD1 and startup
The other end of resistance R4 connects, and the two ends of stabilivolt ZD1 are connected in the input of power supply control chip in parallel simultaneously, and electric capacity C1 is also
Connection is connected between stabilivolt ZD1 and the input of power supply control chip.
Converter circuit the most according to claim 5, it is characterised in that: described accumulator (4) includes charging capacitor E1,
The positive pole of charging capacitor E1 is connected with the outfan of reduction voltage circuit (1), the negative pole of charging capacitor E1 and the input of mu balanced circuit (3)
End connects.
Converter circuit the most according to claim 7, it is characterised in that: described accumulator (4) also includes electric capacity C2, electricity
Hold C2 and be connected in parallel in the two ends of charging capacitor E1.
Converter circuit the most according to claim 5, it is characterised in that: also include LED 1, described luminescence
Diodes in parallel is connected to start the two ends of resistance R4.
Converter circuit the most according to claim 1, it is characterised in that power on described in: charging circuit and on and off switch mould
Connect between block and have the resistance R8 of 0 Ω for debugging, when debugging, 0 Ω resistance is disconnected, for subsequent detection on and off switch
Module, cpu control circuit, drive circuit and inverter IGBT module the most normally work.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620358426.9U CN205829459U (en) | 2016-04-26 | 2016-04-26 | Converter circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620358426.9U CN205829459U (en) | 2016-04-26 | 2016-04-26 | Converter circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205829459U true CN205829459U (en) | 2016-12-21 |
Family
ID=58147762
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620358426.9U Active CN205829459U (en) | 2016-04-26 | 2016-04-26 | Converter circuit |
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| Country | Link |
|---|---|
| CN (1) | CN205829459U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108900101A (en) * | 2018-09-03 | 2018-11-27 | 国网湖北省电力有限公司宜昌供电公司 | A kind of switchgear cowling panel of included defencive function |
-
2016
- 2016-04-26 CN CN201620358426.9U patent/CN205829459U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108900101A (en) * | 2018-09-03 | 2018-11-27 | 国网湖北省电力有限公司宜昌供电公司 | A kind of switchgear cowling panel of included defencive function |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |