CN106329934A - Control method and control device of two-way resonant converter - Google Patents
Control method and control device of two-way resonant converter Download PDFInfo
- Publication number
- CN106329934A CN106329934A CN201510405736.1A CN201510405736A CN106329934A CN 106329934 A CN106329934 A CN 106329934A CN 201510405736 A CN201510405736 A CN 201510405736A CN 106329934 A CN106329934 A CN 106329934A
- Authority
- CN
- China
- Prior art keywords
- chop section
- switching tube
- resonance
- chop
- way
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
Abstract
The invention provides a control method and control device of a two-way resonant converter. By the control method and the control device provided by the invention, when energy in the two-way resonant converter reversely flows, the gain can be greater than 1. The control method comprises the step that output voltage of a resonant part is controlled to be specified voltage Vset within designated time when the energy in the two-way resonant converter is transferred in the direction from a second chopper part to a first chopper part, that is to say, the energy reversely flows, wherein the Vset is smaller than +Vh and greater than -Vh; and Vh is the output voltage of the first chopper part.
Description
Technical field
The present invention relates to electric and electronic technical field, particularly relate to the control method of a kind of two-way resonance changer
And control device.
Background technology
Two-way resonance changer is widely used in DC/DC conversion with its efficient feature, existing two-way
Controlled resonant converter includes the first chop section, resonance portion and the second chop section being sequentially connected；Such as Fig. 1
Shown in, resonance portion specifically can include resonant inductance Lr, resonant capacitance Cr and transformator T；First cuts
Ripple part is specifically as follows the full-bridge chopper circuit shown in Fig. 1, it is also possible to for many level chopper circuit etc. other
Chopper circuit；Second chop section is specifically as follows the all-wave copped wave single channel shown in Fig. 1, it is also possible to for full-bridge
Other chopper circuit such as chopper circuit.
As a example by the two-way resonance changer shown in Fig. 1, the control program of existing two-way resonance changer is entered
Row explanation:
When in two-way resonance changer, energy transmits to the second chop section direction from the first chop section, i.e.
During energy forward flow, the first chop section performs inversion actions as inverter, and switching tube Q1, Q4 are same
Step break-make, switching tube Q2, Q3 synchronize break-make, switching tube Q1, Q2 complementation break-make, switching tube Q2,
Q4 complementation break-make；Second chop section performs rectifying action as commutator, and switching tube Q5, Q6 are permissible
Synchronous rectification, it is also possible to always turn off；The now gain of two-way resonance changer can realize more than 1；
When in two-way resonance changer, energy transmits to the first chop section direction from the second chop section, i.e.
During energy back flowing, the first chop section performs rectifying action as commutator, switching tube Q1, Q2,
Q3, Q4 can be with synchronous rectifications, it is also possible to turn off always；Second chop section performs inversion as inverter
Action, switching tube Q5, Q6 complementation break-make；Now, two-way resonance changer is substantially series resonant circuit,
Not having boost function, its gain cannot be more than 1.
Summary of the invention
The present invention provides the control method of a kind of two-way resonance changer and controls device, two-way humorous in order to solve
Shake energy back flowing in changer time, gain cannot problem more than 1.
The invention provides the control method of a kind of two-way resonance changer, described two-way resonance changer bag
Include the first chop section, resonance portion and the second chop section being sequentially connected, described method, including:
When in described two-way resonance changer energy from described second chop section to described first chop section
During the transmission of direction, the output voltage controlling described resonance portion is given voltage Vset in set period；Its
In ,-Vh < Vset <+Vh, Vh is the output voltage of described first chop section.
Present invention also offers the control device of a kind of two-way resonance changer, described two-way resonance changer
Including the first chop section being sequentially connected, resonance portion and the second chop section, described device, bag
Include:
First control unit, for when in described two-way resonance changer energy from described second chop section to
During described first chop section direction transmission, the output voltage controlling described resonance portion is in set period
Given voltage Vset；Wherein ,-Vh < Vset <+Vh, Vh is the output voltage of described first chop section.
The present invention has the beneficial effect that:
The embodiment of the present invention provide scheme in, when in two-way resonance changer energy from the second chop section to
During the first chop section direction transmission, i.e. during energy reverse flow, the output voltage controlling resonance portion is referring to
It is regularly given voltage Vset in section；Wherein ,-Vh < Vset <+Vh, Vh is the output of the first chop section
Voltage；I.e. in this set period, the second chop section transmits energy to resonance portion, resonance portion energy storage,
After this set period, two-way resonance changer normally works, resonant structure subrelease energy, transfers energy to
Second chop section, the most now two-way resonance changer has boost function, it is possible to realize energy back flowing
Shi Zengyi is more than 1.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of existing two-way resonance changer；
Switching tube in the two-way resonance changer that Fig. 2 provides for the embodiment of the present invention 1 drive showing of signal
One of it is intended to；
Switching tube in the two-way resonance changer that Fig. 3 provides for the embodiment of the present invention 1 drive showing of signal
The two of intention；
Switching tube in the two-way resonance changer that Fig. 4 provides for the embodiment of the present invention 1 drive showing of signal
The three of intention；
Switching tube in the two-way resonance changer that Fig. 5 provides for the embodiment of the present invention 1 drive showing of signal
The four of intention；
One of schematic diagram of current path of two-way resonance changer that Fig. 6 provides for the embodiment of the present invention 1；
The two of the schematic diagram of the current path of the two-way resonance changer that Fig. 7 provides for the embodiment of the present invention 1；
The three of the schematic diagram of the current path of the two-way resonance changer that Fig. 8 provides for the embodiment of the present invention 1.
Detailed description of the invention
Embodiments provide the control method of a kind of two-way resonance changer and control device, in order to reality
In existing two-way resonance changer during energy back flowing, gain is more than 1.Below in conjunction with Figure of description to this
The preferred embodiment of invention illustrates, it will be appreciated that preferred embodiment described herein is merely to illustrate
With the explanation present invention, it is not intended to limit the present invention.And the reality in the case of not conflicting, in the application
Execute the feature in example and embodiment can be mutually combined.
Embodiment 1:
The embodiment of the present invention 1 provides the control method of a kind of two-way resonance changer, and this two-way resonance converts
Device includes the first chop section, resonance portion and the second chop section being sequentially connected, this control method bag
Include:
When in two-way resonance changer, energy transmits to the first chop section direction from the second chop section, i.e.
During energy back flowing, the output voltage controlling resonance portion is given voltage Vset in set period；Its
In ,-Vh < Vset <+Vh, Vh is the output voltage of the first chop section.
Further, the output voltage of control resonance portion other period beyond this set period is+Vh
Or-Vh.
I.e. in this set period, the second chop section transmits energy to resonance portion, resonance portion energy storage,
After this set period, two-way resonance changer normally works, resonant structure subrelease energy, transfers energy to
Second chop section, now two-way resonance changer has boost function, therefore, it is possible to realize energy back stream
Time dynamic, gain is more than 1.
It should be noted that the control method that the embodiment of the present invention 1 provides, the concrete number to this set period
Amount, duration, occur that position is all not especially limited, simply by the presence of this set period, be just capable of two-way
In controlled resonant converter, during energy back flowing, gain is more than 1.In order to be easily achieved when reality is implemented, this appointment
Switching tube conducting in each switch periods of each switching tube that the period can be arranged in the second chop section
The original position of period, i.e. the output voltage controlling resonance portion is given voltage Vset in set period,
Specifically may include that for each switching tube in the second chop section, in each switch week of this switching tube
In phase, the output voltage controlling resonance portion is to specify in the set period that this switching tube turn-on instant starts
Voltage Vset.
During actual enforcement, resonant structure can be controlled by controlling the break-make of the switching tube in the first chop section
The output voltage divided is given voltage Vset in set period.After this set period, then control first
Switching tube synchronous rectification in chop section, the output voltage of resonance portion is+Vh or-Vh.
Further, when in two-way resonance changer energy from the second chop section to the first chop section direction
During transmission, i.e. during energy reverse flow, the switching frequency regulating the switching tube in the second chop section can also
Certain regulation effect is played in gain to two-way resonance changer, but when the switching tube in the second chop section
Switching frequency produce less than the resonant inductance in resonance portion and resonant capacitance resonant frequency time, can lose
Lose Sofe Switch condition, there is straight-through risk.It is therefore advantageous to, it is two-way humorous that the embodiment of the present invention 1 provides
Shake the control method of changer, also include: when in two-way resonance changer energy from the second chop section to
During one chop section direction transmission, the switching frequency controlling the switching tube in the second chop section is more than or equal to humorous
Shake the resonant frequency that the resonant inductance in part and resonant capacitance produce.Now, it is possible to avoid the second copped wave
The straight-through risk of the switching tube in part, thus improve reliability and the efficiency of two-way resonance changer.
Below as a example by the two-way resonance changer shown in Fig. 1, the controlling party that the embodiment of the present invention 1 is provided
Method is described in detail.
When in the two-way resonance changer shown in Fig. 1 energy from the first chop section to the second chop section direction
During transmission, i.e. during energy forward flow, the control method of prior art, two-way resonance changer can be used
Gain can realize more than 1.
When in the two-way resonance changer shown in Fig. 1 energy from the second chop section to the first chop section direction
During transmission, i.e. during energy reverse flow, can set a switching frequency fset, fset is big for this switching frequency
In the resonant frequency produced equal to the resonant inductance in resonance portion and resonant capacitance, control the second copped wave portion
The switching frequency of switching tube Q5, Q6 in Fen is more than or equal to this switching frequency fset to ensure reliability；?
On the basis of this, if not requiring, gain is more than 1, and the control method of prior art can be used the first copped wave portion
Switching tube Q1, Q2, Q3, Q4 in Fen are controlled, and the output voltage of resonance portion is always+Vh
Or-Vh；If requiring, gain is more than 1, then can use the control method that the embodiment of the present invention 1 provides, and controls
The output voltage of resonance portion is given voltage Vset in set period, other beyond this set period
Period is+Vh or-Vh.
It is also preferred that the left above-mentioned given voltage Vset is 0, it is easier to realize.Concrete, can be in the second copped wave
In each switch periods of the switching tube Q5 in part, by controlling the switching tube in the first chop section
The break-make of Q1, Q2, Q3, Q4, controls the output voltage Vba of resonance portion when switching tube Q5 turns on
It is 0 in carving the set period started, controls switching tube Q1, Q2, Q3, Q4 synchronous rectification the most again；With
Sample, in each switch periods of the switching tube Q6 in the second chop section, by controlling the first copped wave portion
The break-make of switching tube Q1, Q2, Q3, Q4 in Fen, the output voltage Vba controlling resonance portion is opening
Be 0 in closing the set period that starts of pipe Q6 turn-on instant, control the most again switching tube Q1, Q2, Q3,
Q4 synchronous rectification.The control method industry of synchronous rectification is the most highly developed, is not described in detail in this.Specifically
When realizing, it is contemplated that Dead Time, switching tube Q1, Q2, Q3, the Q4 in the first chop section drives
The driving signal g5 of switching tube Q5, Q6 in dynamic signal g1, g2, g3, g4 and the second chop section,
G6 can be as shown in Figure 2-5.Fig. 2-Fig. 5 simply lists several attainable mode, is not used to limit
The present invention.
Below as a example by the driving signal shown in Fig. 2, worked to the two-way resonance changer shown in Fig. 1
Journey illustrates.
Before the instant t 0, switching tube Q2, Q3 conducting in the first chop section, in the second chop section
Switching tube Q6 conducting；Now, the current path of the two-way resonance changer shown in Fig. 1 is as shown in Figure 6.
Switching tube Q2 in t0 moment, the first chop section, the switching tube Q6 in the second chop section
Turning off, switching tube Q3 is held on；Switching tube Q2 closes and has no progeny, the body diode afterflow in switching tube Q2；
Switching tube Q6 closes and has no progeny, and switching tube Q6 junction capacity is charged, and switching tube Q5 junction capacity is discharged, and discharges into 0
In rear second chop section, electric current flows through the body diode of switching tube Q5, and voltage Vp commutates；Voltage Vp changes
Backward, the electric current of the body diode in switching tube Q2 can be made to reduce rapidly, the first copped wave after being reduced to 0
In part, electric current flows through the body diode of switching tube Q1.
Switching tube Q5 conducting in t1 moment, the second chop section, now, two-way humorous shown in Fig. 1
The shake current path of changer as it is shown in fig. 7, the output voltage Vba of resonance portion is 0, the second copped wave portion
Dividing and transmit energy to resonance portion, resonance portion energy storage, until the t2 moment.
Switching tube Q3 in t2 moment, the first chop section turns off, and switching tube Q3 junction capacity is charged,
Switching tube Q4 junction capacity is discharged, and discharges into after 0 electric current in first chop section and flows through the body of switching tube Q4
Diode.
Switching tube Q1, Q4 conducting in t3 moment, the first chop section, now, double shown in Fig. 1
To the current path of controlled resonant converter as shown in Figure 8, resonant structure subrelease energy, transfer energy to the second copped wave
Part, until the t4 moment such that it is able to realize boost function.
To sum up, above-mentioned t0～the t4 period is that switching tube Q5, the Q6 in the second chop section drives the half of signal
In the individual cycle, wherein, t0～the t1 period is the Dead Time of switching tube Q5, Q6 switching in the second chop section,
T1～the t2 period is resonance portion energy storage time, t2～the t3 period be the switching tube Q3 in the first chop section,
The Dead Time of Q4 switching, t3～the t4 period is the resonant structure subrelease energy time.
And t4～the t8 period is other half week that switching tube Q5, the Q6 in the second chop section drives signal
Phase, wherein, t4～the t5 period is the Dead Time of switching tube Q5, Q6 switching in the second chop section, t5～t6
Period is resonance portion energy storage time, t6～the t7 period is switching tube Q1, Q2 switching in the first chop section
Dead Time, t7～the t8 period is the resonant structure subrelease energy time, work process be similar to, be not described in detail in this.
In sum, use the control method of the two-way resonance changer of the embodiment of the present invention 1 offer, two-way
In controlled resonant converter during energy in bidirectional flow, gain all more than 1, and can improve two-way resonance change
The reliability of parallel operation and efficiency.
Embodiment 2:
Based on same inventive concept, the embodiment of the present invention 2 additionally provides the control of a kind of two-way resonance changer
Device, this two-way resonance changer includes the first chop section, resonance portion and the second copped wave being sequentially connected
Part, this control device includes:
First control unit, for when in two-way resonance changer energy from the second chop section to the first copped wave
During the transmission of part direction, the output voltage controlling resonance portion is given voltage Vset in set period；Its
In ,-Vh < Vset <+Vh, Vh is the output voltage of the first chop section.
It is also preferred that the left this control device also includes:
Second control unit, for when in two-way resonance changer energy from the second chop section to the first copped wave
During the transmission of part direction, the switching frequency controlling the switching tube in the second chop section is more than or equal to resonance portion
In resonant inductance and resonant capacitance produce resonant frequency.
Further, the first control unit, specifically for by controlling the switching tube in the first chop section
Break-make, control resonance portion output voltage be given voltage Vset in set period.
It is also preferred that the left the first control unit, specifically for for each switching tube in the second chop section,
In each switch periods of this switching tube, the output voltage controlling resonance portion is opened from this switching tube turn-on instant
It is given voltage Vset in the set period begun.
Further, it is intended that voltage Vset is 0.
Obviously, those skilled in the art can carry out various change and modification without deviating from this to the present invention
Bright spirit and scope.So, if the present invention these amendment and modification belong to the claims in the present invention and
Within the scope of its equivalent technologies, then the present invention is also intended to comprise these change and modification.
Claims (10)
1. a control method for two-way resonance changer, described two-way resonance changer includes being sequentially connected
The first chop section, resonance portion and the second chop section, it is characterised in that including:
When in described two-way resonance changer energy from described second chop section to described first chop section
During the transmission of direction, the output voltage controlling described resonance portion is given voltage Vset in set period；Its
In ,-Vh < Vset <+Vh, Vh is the output voltage of described first chop section.
2. control method as claimed in claim 1, it is characterised in that also include:
When in described two-way resonance changer energy from described second chop section to described first chop section
During the transmission of direction, the switching frequency controlling the switching tube in described second chop section is more than or equal to described resonance
Resonant inductance in part and the resonant frequency of resonant capacitance generation.
3. control method as claimed in claim 1 or 2, it is characterised in that control described resonance portion
Output voltage be given voltage Vset in set period, specifically include:
By controlling the break-make of the switching tube in described first chop section, control the output of described resonance portion
Voltage is given voltage Vset in set period.
4. control method as claimed in claim 1 or 2, it is characterised in that control described resonance portion
Output voltage be given voltage Vset in set period, specifically include:
For each switching tube in described second chop section, in each switch periods of this switching tube,
The output voltage controlling described resonance portion is to specify in the set period that this switching tube turn-on instant starts
Voltage Vset.
5. control method as claimed in claim 1 or 2, it is characterised in that described given voltage Vset
It is 0.
6. a control device for two-way resonance changer, described two-way resonance changer includes being sequentially connected
The first chop section, resonance portion and the second chop section, it is characterised in that including:
First control unit, for when in described two-way resonance changer energy from described second chop section to
During described first chop section direction transmission, the output voltage controlling described resonance portion is in set period
Given voltage Vset；Wherein ,-Vh < Vset <+Vh, Vh is the output voltage of described first chop section.
Control device the most as claimed in claim 6, it is characterised in that also include:
Second control unit, for when in described two-way resonance changer energy from described second chop section to
During described first chop section direction transmission, control the switching frequency of switching tube in described second chop section
The resonant frequency produced more than or equal to the resonant inductance in described resonance portion and resonant capacitance.
Control device the most as claimed in claims 6 or 7, it is characterised in that described first control unit,
Specifically for the break-make by controlling the switching tube in described first chop section, control described resonance portion
Output voltage is given voltage Vset in set period.
Control device the most as claimed in claims 6 or 7, it is characterised in that described first control unit,
Specifically for for each switching tube in described second chop section, in each switch periods of this switching tube
In, the output voltage controlling described resonance portion is to refer in the set period that this switching tube turn-on instant starts
Determine voltage Vset.
Control device the most as claimed in claims 6 or 7, it is characterised in that described given voltage Vset
It is 0.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510405736.1A CN106329934A (en) | 2015-07-10 | 2015-07-10 | Control method and control device of two-way resonant converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510405736.1A CN106329934A (en) | 2015-07-10 | 2015-07-10 | Control method and control device of two-way resonant converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106329934A true CN106329934A (en) | 2017-01-11 |
Family
ID=57725331
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510405736.1A Pending CN106329934A (en) | 2015-07-10 | 2015-07-10 | Control method and control device of two-way resonant converter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106329934A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1893250A (en) * | 2005-07-07 | 2007-01-10 | 三星电机株式会社 | High efficiency half-bridge DC/DC convertor |
| US20080186742A1 (en) * | 2005-05-18 | 2008-08-07 | Pstek Co., Ltd. | Synchronous Rectifier Type Series Resonant Converter for Operating in Intermittence Mode |
| CN103580490A (en) * | 2012-06-27 | 2014-02-12 | 株式会社日立信息通信工程 | Dc-dc converter |
| WO2014103105A1 (en) * | 2012-12-28 | 2014-07-03 | パナソニック株式会社 | Dc-to-dc converter |
-
2015
- 2015-07-10 CN CN201510405736.1A patent/CN106329934A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080186742A1 (en) * | 2005-05-18 | 2008-08-07 | Pstek Co., Ltd. | Synchronous Rectifier Type Series Resonant Converter for Operating in Intermittence Mode |
| CN1893250A (en) * | 2005-07-07 | 2007-01-10 | 三星电机株式会社 | High efficiency half-bridge DC/DC convertor |
| CN103580490A (en) * | 2012-06-27 | 2014-02-12 | 株式会社日立信息通信工程 | Dc-dc converter |
| WO2014103105A1 (en) * | 2012-12-28 | 2014-07-03 | パナソニック株式会社 | Dc-to-dc converter |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP3971019B1 (en) | Charging circuit having two output ports | |
| Koo et al. | New zero-voltage-switching phase-shift full-bridge converter with low conduction losses | |
| CN100511942C (en) | Method for controlling positive and negative excitation bidirectional DC-DC converter | |
| CN104779806B (en) | Asymmetrical half-bridge anti exciting converter and its control method | |
| USRE43572E1 (en) | Bi-directional multi-port inverter with high frequency link transformer | |
| US9866146B2 (en) | Enhanced flyback converter | |
| CN106033929A (en) | Power converter and control method for the same | |
| CN106026619A (en) | Current-limiting peak value adjusting circuit, current-limiting unit, control circuit and power converter | |
| JP2016103970A (en) | Power converter | |
| CN101478243A (en) | Switch electric power circuit with wide inputting range | |
| JP5362466B2 (en) | Control device for power conversion circuit | |
| CN100446394C (en) | High-efficiency AC-DC converter with power factor corrector | |
| CN210016405U (en) | Micro-grid double-active full-bridge bidirectional DC-DC converter | |
| CN104578806B (en) | Cascade bilateral soft switch DC/DC circuit topology | |
| CN102835012A (en) | Power converter | |
| CN110994982A (en) | Soft switching mode BUCK converter and control method thereof | |
| Hasanpour et al. | A new soft-switched high step-up trans-inverse DC/DC converter based on built-in transformer | |
| Biswas et al. | TAB based multiport converter with optimized transformer RMS current and improved ZVS range for DC microgrid applications | |
| CN201266887Y (en) | Switch electric power circuit with wide input range | |
| CN106329934A (en) | Control method and control device of two-way resonant converter | |
| US9436192B2 (en) | Apparatus for PWM gate drive circuit | |
| Cruz-Cozar et al. | Resonant hybrid flyback: A novel topology with wide voltage range for DC microgrid applications | |
| CN104734496A (en) | SEPIC feed buck-boost converter | |
| TW202011679A (en) | Three-phase multi-level series-series resonant converter | |
| JP6601672B2 (en) | Power converter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: Nanshan District Xueyuan Road in Shenzhen city of Guangdong province 518055 No. 1001 Nanshan Chi Park building B2 Applicant after: Vitamin Technology Co., Ltd. Address before: Nanshan District Xueyuan Road in Shenzhen city of Guangdong province 518055 No. 1001 Nanshan Chi Park building B2 Applicant before: Aimosheng Network Energy Source Co., Ltd. |
|
| CB02 | Change of applicant information | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170111 |
|
| RJ01 | Rejection of invention patent application after publication |