CN109768710A - Bi-directional DC-DC circuit topological structure and control method in bidirectional charger - Google Patents
Bi-directional DC-DC circuit topological structure and control method in bidirectional charger Download PDFInfo
- Publication number
- CN109768710A CN109768710A CN201910039822.3A CN201910039822A CN109768710A CN 109768710 A CN109768710 A CN 109768710A CN 201910039822 A CN201910039822 A CN 201910039822A CN 109768710 A CN109768710 A CN 109768710A
- Authority
- CN
- China
- Prior art keywords
- active bridge
- relay
- pair
- bridge circuit
- circuit
- 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
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses bi-directional DC-DC circuit topological structures in a kind of bidirectional charger in charger field, including two pairs of active bridge circuits, two relays, it is connected after the series connection of the input side of first pair of active bridge circuit and second pair of active bridge circuit with high voltage direct current side, one end output of first pair of active bridge circuit is connected with the normally opened contact of the first relay, and it is connected to anode, the other end output of first pair of active bridge circuit is connected with the normally-closed contact of the first relay, one end output of second pair of active bridge circuit is connected with the public terminal of the first relay, the other end output of second pair of active bridge circuit is connected with the public terminal of the second relay, and it is connected to the cathode of battery, the normally-closed contact of first relay is connected with the normally opened contact of the second relay, the present invention is using the double active bridge circuits of two-way in its high voltage direct current side Series connection is connect with battery again after realizing the serial or parallel connection of its output end by controlling relay, reduces cost, improves transformation of electrical energy efficiency.
Description
Technical field
The present invention relates to a kind of charger, in particular to a kind of bidirectional charger circuit structure.
Background technique
The existing two-way DC-DC converter applied to bidirectional charger circuit mainly has following 2 kinds: 1) it is electrical not every
From DC-DC reversible transducer, 2) the DC-DC reversible transducer of isolated form.1st kind of method, mostly uses greatly two-way
Semi-bridge type circuit, for this circuit when battery voltage is lower, the high voltage direct current relative to input side is pressed with larger conversion ratio
When, effciency of energy transfer is lower, and in addition not being isolated electrically between battery and DC bus, there are security risks.2nd kind of method,
Full-bridge circuit is mostly used greatly, high-frequency isolation transformer both ends are all made of full bridge structure, also have and open up using the two-way circuit based on LLC
It flutters, but full-bridge circuit is not easy to realize Sofe Switch at light load, and frequency is high at light load, loss is big for LLC circuit.At present in two-way charging
Under machine application, preferable circuit topology is using double active bridge circuits, but with integration degree and battery voltage range
Raising, in addition changed power range in battery charging process is originally very big, this is for the charging using fixed circuit structure
Machine, the switching device in circuit must be selected by pressure resistance and resistant to flow maximum case, thus such charger is not only at high cost,
And energy conversion efficiency is also low.If being directed to the application of different voltages grade and different capacity grade, develop respectively a
If product, although can get greater efficiency, production cost can be improved, and lead to the low in economic efficiency of manufacturer.
Summary of the invention
The object of the present invention is to provide bi-directional DC-DC circuit topological structure and control methods in a kind of bidirectional charger, adopt
It is connected with the double active bridge circuits of two-way in its high voltage direct current side, after the serial or parallel connection that its output end is realized by controlling relay
It is connect again with battery, reduces cost, improve transformation of electrical energy efficiency.
The object of the present invention is achieved like this: bi-directional DC-DC circuit topological structure in a kind of bidirectional charger, including
The active bridge circuit of a pair of, second pair of active bridge circuit, the first relay K1 and the second relay K2, first pair of active bridge electricity
It is connected after the series connection of the input side of road and second pair of active bridge circuit with high voltage direct current side, one end output of first pair of active bridge circuit
Be connected with the normally opened contact of the first relay K1, and be connected to anode, the other end output of the first pair of active bridge circuit with
The normally-closed contact of first relay K1 is connected, the public terminal of one end output and the first relay K1 of second pair of active bridge circuit
It is connected, the other end output of second pair of active bridge circuit is connected with the public terminal of the second relay K2, and is connected to battery
Cathode, the normally-closed contact of the first relay K1 are connected with the normally opened contact of the second relay K2, first pair of active bridge circuit,
The second pair of active bridge circuit realized by the normally-closed contact of the first relay K1, the second relay K2 after the series connection of output end again with
Battery is connected, and first pair of active bridge circuit, second pair of active bridge circuit then pass through the first relay K1, the second relay K2
Normally opened contact closure realize output end parallel connection after be connected again with battery.
It is further limited as of the invention, corresponds to position in first pair of active bridge circuit, second pair of active bridge circuit
The on-off for the switching tube set be it is synchronous, the diagonally opposing corner switching tube of the active bridge circuit mesohigh DC side of every a pair of and battery side is logical
Disconnected is synchronous.
It is further limited as of the invention, when the switching tube of double active bridge circuit high voltage direct current sides is ahead of battery
, it can be achieved that charger charge mode when the phase shifting angle of side switching tube is Φ；When the battery side switching tube of double active bridge circuits
, it can be achieved that the discharge mode of charger when the phase shifting angle for being ahead of high voltage direct current side switching tube is Φ.
It is further limited as of the invention, according to the voltage class of battery, passes through the first relay K1, the second relay
The normally-closed contact of K2 selects first pair of active bridge circuit, second pair of active bridge circuit for series connection output, to adapt to higher battery electricity
The application of pressure；First pair of active bridge circuit, the are realized by the closure of the normally opened contact of the first relay K1, the second relay K2
The parallel output of two pairs of active bridge circuits, to adapt to the application compared with low battery voltages.
Bi-directional DC-DC circuit control method in a kind of bidirectional charger, including following two mode: when double active bridges
The switching tube of circuit high voltage direct current side is ahead of when the phase shifting angle of battery side switching tube is Φ, it can be achieved that charger charge mode；
When the battery side switching tube of double active bridge circuits is ahead of when the phase shifting angle of high voltage direct current side switching tube is Φ, it can be achieved that filling
The discharge mode of motor.
It is further limited as of the invention, according to the voltage class of battery, passes through the first relay K1, the second relay
The normally-closed contact of K2 selects first pair of active bridge circuit, second pair of active bridge circuit for series connection output, to adapt to higher battery electricity
The application of pressure；First pair of active bridge circuit, the are realized by the closure of the normally opened contact of the first relay K1, the second relay K2
The parallel output of two pairs of active bridge circuits, to adapt to the application compared with low battery voltages.
Compared with prior art, the beneficial effects of the present invention are: it is logical in its output end for two double active bridge circuits
It crosses relay and realizes serial or parallel connection, when cell voltage is higher, two pairs of active bridge electricity are realized by the normally-closed contact of relay
The series connection way of output on road, and when cell voltage is lower, then by the way that the normally opened contact of relay to be closed, so that two pairs have
Source bridge circuit realizes parallel output mode；The battery side switching tube of the double active bridge circuits of two-way in this way may be selected by the big electricity of low pressure
The metal-oxide-semiconductor field effect transistor of stream can effectively reduce conduction loss under the higher and lower application of cell voltage, to improve
Efficiency；Because high voltage direct current side voltage is higher in the present invention, therefore two double active bridge circuits are followed by input terminal series connection
Enter high input voltage DC side, by way of series connection partial pressure, the requirement to high side switch pipe stress levels is reduced, to drop
Low conduction loss；Control method in the present invention can improve efficiency to avoid high frequency circulating currents；The two-way of energy may be implemented
Flowing, the i.e. circuit can realize bidirectional charger；The full-bridge circuit of high voltage direct current side and the full-bridge circuit of battery side pass through shifting
Phase control, to realize Sofe Switch of all switching tubes in full-load range in full-bridge circuit, to improve bidirectional charger
Efficiency；Using control method of the invention, it is avoided that energy in reversible operation switching, switchs in two double active bridge circuits
The voltage un-balance and uneven flow problem that pipe occurs, to improve the reliability of system.Control method of the invention can not only be applied
In bidirectional charger, moreover it is possible to applied to the interface circuit in direct-current micro-grid.
Detailed description of the invention
Fig. 1 is composition schematic diagram of the invention.
Fig. 2 is implementation principle figure of the invention.
Driver' s timing figure of Fig. 3 present invention in battery charging state lower switch pipe.
Driver' s timing figure of Fig. 4 present invention in battery discharge status lower switch pipe.
Application schematic diagram of Fig. 5 present invention in charger system.
Fig. 6 circuit of the present invention efficiency curve when charging compared with low battery voltages.
Fig. 7 circuit of the present invention efficiency curve when higher cell voltage charges.
Waveform of Fig. 8 circuit of the present invention in battery charging state.
Waveform of Fig. 9 circuit of the present invention in battery discharge status.
Designation in Fig. 1 and Fig. 2:
The high-pressure side Vdc DC voltage；
Vbat cell voltage；
The high-pressure side Ci1, Ci2 filter capacitor；
Q1~Q16 switching tube；
The body diode of D1~D16 switching tube；
The parasitic capacitance of C1~C16 switching tube；
Cb1, Cb2 capacitance；
Ls1, Ls2 resonant inductance；
Tr1, Tr2 high frequency transformer；
Co1, Co2 output filter capacitor；
K1, K2 relay.
Designation in Fig. 3 and Fig. 4:
The driving signal of Q1~Q16 switching tube；
Φ phase shifting angle.
The designation of Fig. 5:
v acNetwork voltage；
i acCurrent on line side；
Lac net side energy storage inductor；
IbatThe charging or discharging current of battery；
i Ls Electric current in resonant inductance；
v g1The driving signal of switching tube Q1, Q9；
v g2The driving signal of switching tube Q2, Q10；
v g3The driving signal of switching tube Q3, Q11
v g4The driving signal of switching tube Q4, Q12；
v g5The driving signal of switching tube Q5, Q13
v g6The driving signal of switching tube Q6, Q14；
v g7The driving signal of switching tube Q7, Q15
v g8The driving signal of switching tube Q8, Q16；
Other same Fig. 2 of symbol.
Designation in Fig. 8 and Fig. 9 is the same as in Fig. 5.
Specific embodiment
The present invention will be further described combined with specific embodiments below.
As shown in Figure 1, Figure 2, Figure 3 and Figure 4: system is by first pair of active bridge circuit 1, second pair of active bridge circuit 2, relay
Device 3, relay 4 and switching tube drive pulse signal 5 are constituted.
As shown in Fig. 1 and Fig. 2: bi-directional DC-DC circuit topological structure in a kind of bidirectional charger, including first pair of active bridge
Circuit 1 and second pair of active bridge circuit 2, first pair of active bridge circuit 1 and second pair of active bridge circuit 2 input terminal series connection after with
High input voltage DC side is connected, first pair of active bridge circuit 1 and second pair of active bridge circuit 2 output end through relay 3 and after
It is connected after serial or parallel connection with battery after electric appliance 4.
After the series connection of the input side of first pair of active bridge circuit 1 and the second pair of active bridge circuit 2 with high voltage direct current side Vdc phase
Even, one end output of first pair of active bridge circuit 1 is connected with the normally opened contact of relay K1, and is connected to anode, and first
The other end output of double active bridge circuits 1 is connected with the normally-closed contact of relay K1, one end output of second pair of active bridge circuit 2
It is connected with the public terminal of relay K1, the other end of second pair of active bridge circuit 2 is connected with the public terminal of relay K2, and
It is connected to the cathode of battery, the normally-closed contact of relay K1 is connected with the normally opened contact of relay K2.
First pair of active bridge circuit 1 and second pair of active bridge circuit 2 are realized defeated by the normally-closed contact of relay K1 and K2
It is connected again with battery after the series connection of outlet, the closure for the normally opened contact that two double active bridge circuits then pass through relay K1 and K2 is real
It is connected again with battery after the parallel connection of existing output end.
According to the voltage class of battery, it is defeated to connect that two pairs of active bridge circuits are selected by the normally-closed contact of two relays
Out, to adapt to the application of higher cell voltage；Two pairs of active bridge circuits are realized by the closure of the normally opened contact of two relays
Parallel output, to adapt to the application compared with low battery voltages.
Double active bridge circuits in the present invention are by high-pressure side filter capacitor, switching tube, the body diode of switching tube, switch
The parasitic capacitance of pipe, capacitance, resonant inductance, high frequency transformer, output filter capacitor composition.
The input terminal of two pairs of active bridges can reduce the stress levels of high voltage direct current side switching tube by series connection, output end
Mode is the range according to cell voltage and changes in parallel or series, when cell voltage is higher, passes through relay K1 and K2
Normally-closed contact after the output end series connection of two double active bridge circuits, then is battery charge or discharge；When cell voltage is lower
When, then by the line Bao get electricity of control relay, so that the normally opened contact of relay K1 and K2 are closed, normally-closed contact is disconnected, this
Sample by the output end of two double active bridges it is in parallel after, then be battery charge or discharge.So that the battery side of double active bridges is opened
Closing pipe can choose the metal-oxide-semiconductor field effect transistor of low pressure resistance, high current grade, to reduce the conduction loss of switching tube.Using the present invention
Method, the energy conversion efficiency of charger is promoted in wide battery voltage range, and can reduce charger product line,
To reduce development cost to increase economic efficiency.
As shown in Fig. 2, Fig. 3 and Fig. 4: bi-directional DC-DC circuit topology and control method in bidirectional charger, first pair active
Bridge circuit 1 with the on-off of the switching tube of corresponding position in second pair of active bridge circuit 2 be it is synchronous, in every active bridge circuit of a pair of
High voltage direct current side is synchronous with the diagonally opposing corner switching tube on-off of battery side；When double active bridge circuit high voltage direct current sides
Switching tube is ahead of when the phase shifting angle of battery side switching tube is Φ, it can be achieved that charger charge mode；When double active bridge electricity
The battery side switching tube on road is ahead of when the phase shifting angle of high voltage direct current side switching tube is Φ the discharge mode, it can be achieved that charger.
When circuit work as shown in Figure 3, same bridge arm switching tube driving signal is complementary and there are dead zones, not only can be with
It prevents bridge arm to be connected, and may insure that the junction capacity of resonant inductance and switching tube generates resonance to realize Sofe Switch；The present invention
In same bridge arm switching tube driving signal it is complementary, both ensure that the switching tube of corresponding position in two double active bridge circuits was synchronous
On-off also ensures two double active bridge high-pressure sides on-off synchronous with low-pressure side diagonally opposing corner switching tube.
Fig. 3 and Fig. 4 gives the method for controlling switch and driver' s timing that the circuit uses: when double active bridge circuits
The switching tube of high voltage direct current side be ahead of battery side switching tube phase shifting angle be Φ when (as shown in Figure 3), it can be achieved that charger to
Battery charging；When it is Φ that double active bridge circuit battery side switching tubes, which are ahead of the phase shifting angle of high voltage direct current side switching tube,
(as shown in Figure 4) is, it can be achieved that charger is run by the electric discharge of battery side to high voltage direct current side.Therefore by double in control charger
The phase shifting angle Φ of switching tube, may be implemented the two-way flow of charger energy in the full-bridge circuit of active bridge two sides, i.e., in the present invention
Circuit realizes bidirectional charger.
Design parameter is as follows in invention circuit as shown in Figure 5: the maximum power 6.6KW of this circuit, DC bus (high straightening
Flow side) voltage Vdc=400V, the high pressure lateral capacitance μ F of Ci1=Ci2=3600, the battery side filter capacitor μ F of Co1=Co2=2000, high pressure
DC side switching tube Q1~Q4, Q9~Q12 use the IXFK102N30P (300V/102A) of IXYS, and battery side switching tube Q5~
Q8, Q13~Q16 use Infineon IPP030N10N3(100V/100A), D1~D16 and C1~C16 is the body of switching tube in figure
Diode and junction capacity, Ls1=Ls2=20 μ H, capacitance Cb1=Cb2=4.4 μ F, high frequency transformer Tr1 and Tr2 select EE55
Magnetic core, HF switch frequency be 50kHz.Drive control pulse is generated by the DSP that TI company model is TMS320F28035
The control signal of signal and relay K1 and K2.
As shown in fig. 6, DSP issues high-level control signal and allows relay line Bao get electricity when battery side voltage is 48V,
So that the normally opened contact closure of two relays, normally-closed contact disconnect, realize the double active bridge circuit output ends of two-way and
Connection, actual measurement peak efficiency are 97.4%.
As shown in fig. 7, DSP issues low level control signal and allows relay line packet power loss when cell voltage is 100V, after
Electric appliance restores normally-closed contact closure, so that the output end series connection of the double active bridge circuits of two-way, actual measurement peak efficiency are
97.6%.It can be seen that can get high efficiency using circuit of the present invention when cell voltage is higher and lower.
As seen from the above description, bi-directional DC-DC circuit topology and control method in bidirectional charger of the invention, in wide electricity
Pressure-resistant, the resistant to flow grade of battery side switching tube is reduced in the range of cell voltage, not only high voltage direct current side or battery side are all easy
Suitable switching tube is selected to reduce the conduction loss of switching tube, to improve effciency of energy transfer.
The invention has the following advantages that
(1) cell voltage is higher and lower is able to achieve high efficiency；
(2) two-way flow of the energy conversion and energy of high transformation ratio may be implemented, there is high performance-price ratio；
(3) it is applicable not only to bidirectional charger, applies also for distributed photovoltaic power generation energy storage device, energy recycle device, intelligence
Interface circuit in power grid.
The present invention is not limited to the above embodiments, on the basis of technical solution disclosed by the invention, the skill of this field
For art personnel according to disclosed technology contents, one can be made to some of which technical characteristic by not needing creative labor
A little replacements and deformation, these replacements and deformation are within the scope of the invention.
Claims (6)
1. bi-directional DC-DC circuit topological structure in a kind of bidirectional charger, including first pair of active bridge circuit, second pair of active bridge
Circuit, the first relay K1 and the second relay K2, which is characterized in that first pair of active bridge circuit and second pair of active bridge
It is connected after the input side series connection of circuit with high voltage direct current side, one end output of first pair of active bridge circuit is with the first relay K1's
Normally opened contact is connected, and is connected to anode, and the other end of first pair of active bridge circuit exports normal with the first relay K1
Closed contact is connected, and one end output of second pair of active bridge circuit is connected with the public terminal of the first relay K1, and second pair active
The other end output of bridge circuit is connected with the public terminal of the second relay K2, and is connected to the cathode of battery, the first relay
The normally-closed contact of K1 is connected with the normally opened contact of the second relay K2, first pair of active bridge circuit, second pair of active bridge electricity
Road is connected with battery again after the series connection by the normally-closed contact realization output end of the first relay K1, the second relay K2, described
First pair of active bridge circuit, second pair of active bridge circuit then pass through the normally opened contact of the first relay K1, the second relay K2
It is connected again with battery after the parallel connection of closure realization output end.
2. bi-directional DC-DC circuit topological structure in bidirectional charger according to claim 1, which is characterized in that described
The on-off of the switching tube of corresponding position is synchronous in the active bridge circuit of a pair of, second pair of active bridge circuit, every active bridge of a pair of
Circuit mesohigh DC side is synchronous with the diagonally opposing corner switching tube on-off of battery side.
3. bi-directional DC-DC circuit topological structure in bidirectional charger according to claim 1, which is characterized in that when described
The switching tube of double active bridge circuit high voltage direct current sides is ahead of when the phase shifting angle of battery side switching tube is Φ, it can be achieved that charger fills
Power mode；When it is Φ that the battery side switching tube of double active bridge circuits, which is ahead of the phase shifting angle of high voltage direct current side switching tube,
The discharge mode of charger can be achieved.
4. bi-directional DC-DC circuit topological structure in bidirectional charger according to claim 1, which is characterized in that according to electricity
The voltage class in pond selects first pair of active bridge circuit, second by the normally-closed contact of the first relay K1, the second relay K2
Double active bridge circuits are series connection output, to adapt to the application of higher cell voltage；Pass through the first relay K1, the second relay K2
The closure of normally opened contact realize the parallel output of first pair of active bridge circuit, the second pair of active bridge circuit, to adapt to lower electricity
The application of cell voltage.
5. bi-directional DC-DC circuit control method in a kind of bidirectional charger, which is characterized in that including following two mode: working as institute
The switching tube for stating double active bridge circuit high voltage direct current sides is ahead of when the phase shifting angle of battery side switching tube is Φ, it can be achieved that charger
Charge mode；When the phase shifting angle that the battery side switching tube of double active bridge circuits is ahead of high voltage direct current side switching tube is Φ
When, it can be achieved that charger discharge mode.
6. bi-directional DC-DC circuit control method in bidirectional charger according to claim 5, which is characterized in that according to electricity
The voltage class in pond selects first pair of active bridge circuit, second by the normally-closed contact of the first relay K1, the second relay K2
Double active bridge circuits are series connection output, to adapt to the application of higher cell voltage；Pass through the first relay K1, the second relay K2
The closure of normally opened contact realize the parallel output of first pair of active bridge circuit, the second pair of active bridge circuit, to adapt to lower electricity
The application of cell voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910039822.3A CN109768710A (en) | 2019-01-16 | 2019-01-16 | Bi-directional DC-DC circuit topological structure and control method in bidirectional charger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910039822.3A CN109768710A (en) | 2019-01-16 | 2019-01-16 | Bi-directional DC-DC circuit topological structure and control method in bidirectional charger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109768710A true CN109768710A (en) | 2019-05-17 |
Family
ID=66452366
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910039822.3A Pending CN109768710A (en) | 2019-01-16 | 2019-01-16 | Bi-directional DC-DC circuit topological structure and control method in bidirectional charger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109768710A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110429824A (en) * | 2019-08-08 | 2019-11-08 | 东北大学 | A kind of two-way cascade input cascaded-output DC-DC transformation topology structure |
| CN110481361A (en) * | 2019-08-08 | 2019-11-22 | 西安工业大学 | The vehicle-mounted two-way charger centerline construction of electric car and its control method |
| CN113328484A (en) * | 2021-04-28 | 2021-08-31 | 深圳市科华恒盛科技有限公司 | Charging module, charging control method and device |
| CN117748963A (en) * | 2023-12-20 | 2024-03-22 | 深圳市优优绿能股份有限公司 | Bidirectional direct current series-parallel relay control device and method and bidirectional direct current series-parallel equipment |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103856063A (en) * | 2014-03-27 | 2014-06-11 | 扬州大学 | Series-parallel type double-active bridge circuit |
| CN204669061U (en) * | 2015-06-18 | 2015-09-23 | 南京华士电子科技有限公司 | A kind of two converter high-power charger circuit |
| US20160226370A1 (en) * | 2015-02-02 | 2016-08-04 | Stmicroelectronics (Tours) Sas | Inrush current limiting circuit |
| CN106655470A (en) * | 2016-12-24 | 2017-05-10 | 漳州科华技术有限责任公司 | Uninterrupted power supply and control method thereof |
| CN107317505A (en) * | 2017-07-07 | 2017-11-03 | 吴忠市中心电焊机有限公司 | A kind of two-way full bridge inverter for being applicable twin voltage automatic conversion |
-
2019
- 2019-01-16 CN CN201910039822.3A patent/CN109768710A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103856063A (en) * | 2014-03-27 | 2014-06-11 | 扬州大学 | Series-parallel type double-active bridge circuit |
| US20160226370A1 (en) * | 2015-02-02 | 2016-08-04 | Stmicroelectronics (Tours) Sas | Inrush current limiting circuit |
| CN204669061U (en) * | 2015-06-18 | 2015-09-23 | 南京华士电子科技有限公司 | A kind of two converter high-power charger circuit |
| CN106655470A (en) * | 2016-12-24 | 2017-05-10 | 漳州科华技术有限责任公司 | Uninterrupted power supply and control method thereof |
| CN107317505A (en) * | 2017-07-07 | 2017-11-03 | 吴忠市中心电焊机有限公司 | A kind of two-way full bridge inverter for being applicable twin voltage automatic conversion |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110429824A (en) * | 2019-08-08 | 2019-11-08 | 东北大学 | A kind of two-way cascade input cascaded-output DC-DC transformation topology structure |
| CN110481361A (en) * | 2019-08-08 | 2019-11-22 | 西安工业大学 | The vehicle-mounted two-way charger centerline construction of electric car and its control method |
| CN113328484A (en) * | 2021-04-28 | 2021-08-31 | 深圳市科华恒盛科技有限公司 | Charging module, charging control method and device |
| CN117748963A (en) * | 2023-12-20 | 2024-03-22 | 深圳市优优绿能股份有限公司 | Bidirectional direct current series-parallel relay control device and method and bidirectional direct current series-parallel equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109768710A (en) | Bi-directional DC-DC circuit topological structure and control method in bidirectional charger | |
| CN104753369B (en) | A kind of high-frequency isolation ac-dc conversion circuit and its control method | |
| CN108988451A (en) | Isolation type bidirectional charger control method and control circuit | |
| CN100578888C (en) | Uninterruptible power supply | |
| CN204465374U (en) | A kind of high-frequency isolation ac-dc conversion circuit | |
| CN104242719B (en) | The full-bridge non-isolated grid-connected inverter of type without switching loss and switch control time sequence | |
| CN102624266A (en) | Three-level inverter circuit | |
| CN109560711A (en) | A kind of isolation type bidirectional DC-DC converter and its modulator approach | |
| CN102158072B (en) | Power inverter of parallel-connected electric bridge type impedance network | |
| CN103916040B (en) | Inverter topological circuit, inverting method and inverter | |
| CN102158071B (en) | Series-connected bridge-type impedance network power converter | |
| CN105871205A (en) | Integrated multifunctional power source switching system | |
| CN102255544A (en) | DC (direct current)/AC (alternating current) inverter circuit | |
| CN107546836A (en) | A kind of ups power | |
| CN107888073A (en) | A kind of alternating current-direct current mixed tensor router of comprehensive Sofe Switch | |
| CN103607107B (en) | Boosting and voltage reducing hybrid power decoupling circuit for photovoltaic grid-connected inverter | |
| CN104242716B (en) | High-reliability non-switching-loss type non-isolated inverter and switching control time sequence thereof | |
| CN206490584U (en) | The two-way DC/DC converter topologies of three level with coupling inductance | |
| CN108736756A (en) | A kind of double auxiliary resonance electrode type three phase soft switch inverter circuits of modified | |
| CN102355125A (en) | Soft start circuit of converter | |
| CN107204707A (en) | A kind of two-way isolation DC/DC converter and its control method for being used to suppress peak voltage | |
| CN102223086B (en) | Generalized active soft-switching inversion type welding and cutting power circuit | |
| CN102185491B (en) | Serial and parallel connection electrical bridge type impedance network power converter | |
| CN106452153A (en) | Variable-topology Trans-Z-source inverter | |
| CN205725456U (en) | Integrated multifunction power supply change-over device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190517 |
|
| RJ01 | Rejection of invention patent application after publication |