CN107196513A - The LLC resonant transform circuits and its method of a kind of suitable wide range output - Google Patents
The LLC resonant transform circuits and its method of a kind of suitable wide range output Download PDFInfo
- Publication number
- CN107196513A CN107196513A CN201710477970.4A CN201710477970A CN107196513A CN 107196513 A CN107196513 A CN 107196513A CN 201710477970 A CN201710477970 A CN 201710477970A CN 107196513 A CN107196513 A CN 107196513A
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- Prior art keywords
- full
- derided capacitors
- bridge
- bridge rectification
- resonant
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/33507—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters
- H02M3/33523—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of the output voltage or current, e.g. flyback converters with galvanic isolation between input and output of both the power stage and the feedback loop
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/4815—Resonant converters
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
Abstract
The invention discloses a kind of LLC resonant transform circuits of suitable wide range output.The one end of the terminal of first derided capacitors and the series connection of the second derided capacitors, the first derided capacitors and the connection of the second derided capacitors again with switching switch is connected, and described switching switch, the first derided capacitors and the second derided capacitors three forms a three-port network；The terminal that two are connected with the first derided capacitors and the second derided capacitors in described three-port network is connected with the two ends of input capacitance respectively, the midpoint for the bridge arm that the terminal being connected in three-port network with switching switch is constituted with first switch pipe, the 4th switching tube is connected, first switch pipe, the midpoint of the bridge arm of the 4th switching tube composition are sequentially connected resonant capacitance, resonant inductance, and resonant inductance and second switch pipe, the 3rd switching tube connection midpoint are connected to the both end of which of resonance transformer respectively.The present invention can effectively widen the output voltage range of circuit.
Description
Technical field
The present invention relates to the LLC resonant transformations electricity of electric and electronic technical field, more particularly to a kind of suitable wide range output
Road and its method.
Background technology
Recently as the development of new-energy automobile, under the two-way drive of policy and interests, electric automobile battery charger row
Industry is quickly grown, while also bringing the quick change and progress of electric automobile battery charger demand and specification.Current electric automobile fills
The output voltage range of motor substantially has two kinds, 200V~500V and 300V~750V.According to electric automobile type and specification
Difference, needs time-consuming selection when selecting charger, while bringing inconvenience to automobile user, also reduces electronic vapour
The utilization rate of car charger.Therefore, there is demand to propose that the output voltage range that unify charger is 200V~750V, it is convenient to use
While family, it can also save charging station cost input, improve charger utilization rate.
But the proposition of ultra-wide output voltage range demand, the design to charger brings bigger challenge.In order to not
Increase or as far as possible reduce addition sheet, do not influence the efficiency of charger and do not influence other output performance indexs of charger (such as
Output voltage ripple etc.) in the case of reach the purpose of ultra-wide output voltage range.
Therefore, those skilled in the art is directed to developing a kind of LLC resonant transform circuits of suitable wide range output.
The content of the invention
In view of the drawbacks described above of prior art, the technical problems to be solved by the invention are to provide a kind of suitable wide scope
The LLC resonant transform circuits and its method of output, can effectively widen the output voltage range of circuit, increase a switching switch,
Two derided capacitors, shared volume and heating are all smaller, to cost and performance impact very little.
To achieve the above object, the invention provides a kind of LLC resonant transform circuits of suitable wide range output, including it is defeated
Enter electric capacity, first switch pipe, second switch pipe, the 3rd switching tube, the 4th switching tube, it is the first full-bridge rectification diode, second complete
Bridge commutation diode, the 3rd full-bridge rectification diode, the 4th full-bridge rectification diode, resonant capacitance, resonant inductance, resonance transformation
Device, switching switch, the first derided capacitors and the second derided capacitors, the first derided capacitors and the series connection of the second derided capacitors, first point
The one end of voltage capacitance and the terminal of the second derided capacitors connection again with switching switch is connected, and described switching is switched, the first partial pressure
Electric capacity and the second derided capacitors three form a three-port network；Two and the first derided capacitors in described three-port network
The terminal being connected with the second derided capacitors is connected with the two ends of input capacitance respectively, is connected in three-port network with switching switch
The midpoint for the bridge arm that terminal is constituted with first switch pipe, the 4th switching tube is connected, first switch pipe, the bridge of the 4th switching tube composition
The midpoint of arm is sequentially connected resonant capacitance, resonant inductance, resonant inductance and second switch pipe, the 3rd switching tube connection midpoint difference
Be connected to the both end of which of resonance transformer, or be connected in three-port network with switching switch terminal and second switch pipe,
The midpoint of the bridge arm of 3rd switching tube composition is connected, and second switch pipe, the midpoint of the bridge arm of the 3rd switching tube composition are sequentially connected
Resonant capacitance, resonant inductance, resonant inductance and first switch pipe, the 4th switching tube connection midpoint are connected to resonance transformer respectively
Both end of which；The another two ends of resonance transformer and the first full-bridge rectification diode, the second full-bridge rectification diode, the 3rd full-bridge are whole
Diode, the full bridge rectifier of the 4th full-bridge rectification diode composition is flowed to be connected.
Described the first derided capacitors and the second derided capacitors derided capacitors, can be the big capacitance electricity for being not involved in resonance
Hold or participate in the low-capacitance electric capacity of resonance, the low-capacitance electric capacity is the electric capacity that capacitance is less than 1uF, the great Rong
It is the electric capacity that capacitance is more than 1uF to be worth electric capacity.
Its transform method is：When output voltage is relatively high, when disconnecting switching switch so that the first derided capacitors
Depart from circuit with the second derided capacitors, then the first switch pipe, second switch pipe, the 3rd switching tube, the 4th switching tube, first
Full-bridge rectification diode, the second full-bridge rectification diode, the 3rd full-bridge rectification diode, the 4th full-bridge rectification diode, resonance
Electric capacity, resonant inductance, resonance transformer constitute full-bridge LLC resonance circuits.
When output voltage compares relatively low, when closure switching switch, the first switch being connected with one end of switching switch
Pipe, the 4th switching tube) it is constantly in off state；Then second switch pipe, the 3rd switching tube, the first derided capacitors and the second partial pressure
Electric capacity, the first full-bridge rectification diode, the second full-bridge rectification diode, the 3rd full-bridge rectification diode, the 4th full-bridge rectification two
Pole pipe, resonant capacitance, resonant inductance, resonance transformer constitute half-bridge logical link control (LLC) resonant circuit.
The present invention when output voltage compares relatively low so that the equivalent structure of operating circuit be half-bridge LLC modes；
When output voltage is relatively high so that the equivalent structure of operating circuit is full-bridge LLC modes.Its principle is that full-bridge LLC is electric
The output voltage on road is twice of half-bridge LLC output voltages under equal conditions, in this way, the output voltage model of circuit can be widened effectively
Enclose.
In terms of circuit, compared to full-bridge LLC, circuit of the invention need to increase switching switch, two derided capacitors, institute
Account for volume and heating is all smaller, to cost and performance impact very little.
The technique effect of the design of the present invention, concrete structure and generation is described further below with reference to accompanying drawing, with
It is fully understood from the purpose of the present invention, feature and effect.
Brief description of the drawings
Fig. 1 is the structural representation of one embodiment of the invention.
Embodiment
As shown in figure 1, the specific embodiment of the present invention, a kind of LLC resonant transform circuits of suitable wide range output, bag
Input capacitance Cd1, first switch pipe Q1, second switch pipe Q2, the 3rd switching tube Q3, the 4th switching tube Q4 are included, the first full-bridge is whole
Flow diode D1, it is the second full-bridge rectification diode D2, the 3rd full-bridge rectification diode D3, the 4th full-bridge rectification diode D4, humorous
Shake electric capacity Cr1, resonant inductance Lr1, resonance transformer Tr1, switching switch S1, the first derided capacitors Crh1 and the second derided capacitors
Crh2, the first derided capacitors Crh1 and the second derided capacitors Crh2 connect, the first derided capacitors Crh1 and the second derided capacitors
The one end of the terminal of Crh2 connections again with switching switch S1 is connected, and described switching switchs S1, the first derided capacitors Crh1 and the
Two derided capacitors Crh2 threes form a three-port network；Two and the first derided capacitors Crh1 in described three-port network
Two ends of the terminal being connected with the second derided capacitors Crh2 respectively with input capacitance Cd1 are connected, and are opened in three-port network with switching
Close the connected terminals of S1 with the midpoint of first switch pipe Q1, the 4th switching tube the Q4 bridge arm constituted to be connected, first switch pipe Q1, the
The midpoint of the bridge arm of four switching tube Q4 compositions is sequentially connected resonant capacitance Cr1, resonant inductance Lr1, and resonant inductance Lr1 and second is opened
The both end of which that pipe Q2, the 3rd switching tube Q3 connections midpoint are connected to resonance transformer Tr1 respectively is closed, resonance transformer Tr1's is another
Two ends and the first full-bridge rectification diode D1, the second full-bridge rectification diode D2, the 3rd full-bridge rectification diode D3, the 4th full-bridge
The full bridge rectifier of commutation diode D4 compositions is connected.
As shown in figure 1, the LLC circuits applied to full-bridge rectification type, can also be applied to the LLC circuits of full-wave rectification type.Fig. 1
In shown circuit, input capacitance Cd1, four switching tube Q1, Q2, Q3, Q4, four full-bridge rectifications diode D1, D2, D3, D4, with
And resonant capacitance Cr1, resonant inductance Lr1, resonance transformer Tr1 constitute our common full-bridge LLC resonance circuits.Electric capacity Crh1
With Crh2 series connection, the one end of the terminal that both connect again with switching switch is connected, and three forms a three-port network.Three end
The terminal that the two of which of mouth network is connected with electric capacity is connected with the two ends of input capacitance respectively, i.e. and tie in former full-bridge LLC electricity
The input side on road, another terminal being connected with switching switch and two bridge arms in former full-bridge LLC circuits of three-port network
Any of bridge arm midpoint be connected.Circuit shown in Fig. 1 is an example in implementation process of the present invention, in three-port network and
The connected terminal of switching switch is connected with the bridge arm midpoint of Q1 and Q4 formation, the bridge arm that can be also formed in Q2 and Q3
Midpoint is connected.
When output voltage is higher, switching switch S1 is disconnected, real work circuit is exactly a full-bridge LLC circuit；Defeated
Go out voltage it is relatively low when, shut-off switchs two switching tubes of that group of bridge arm that S1 is connected with switching, such as the circuit shown in Fig. 1, then closes
Disconnected switching tube Q1 and Q4, meanwhile, closure switching switch S1, then operating circuit is exactly a half-bridge LLC circuit.
Preferred embodiment of the invention described in detail above.It should be appreciated that one of ordinary skill in the art without
Need creative work just can make many modifications and variations according to the design of the present invention.Therefore, all technologies in the art
Personnel are available by logical analysis, reasoning, or a limited experiment on the basis of existing technology under this invention's idea
Technical scheme, all should be in the protection domain being defined in the patent claims.
Claims (6)
1. a kind of LLC resonant transform circuits of suitable wide range output；It is characterized in that：Opened including input capacitance (Cd1), first
Close and manage (Q1), second switch pipe (Q2), the 3rd switching tube (Q3), the 4th switching tube (Q4), the first full-bridge rectification diode (D1),
Second full-bridge rectification diode (D2), the 3rd full-bridge rectification diode (D3), the 4th full-bridge rectification diode (D4), resonant capacitance
(Cr1), resonant inductance (Lr1), resonance transformer (Tr1), switching switch (S1), the first derided capacitors (Crh1) and the second partial pressure
Electric capacity (Crh2), the first derided capacitors (Crh1) and the second derided capacitors (Crh2) series connection, the first derided capacitors (Crh1) and the
The one end of the terminal of two derided capacitors (Crh2) connection again with switching switch (S1) is connected, and described switching switchs (S1), first
Derided capacitors (Crh1) and the second derided capacitors (Crh2) three form a three-port network；Two in described three-port network
The two ends of the individual terminal being connected with the first derided capacitors (Crh1) and the second derided capacitors (Crh2) respectively with input capacitance (Cd1)
It is connected, the terminal being connected in three-port network with switching switch (S1) is constituted with first switch pipe (Q1), the 4th switching tube (Q4)
Bridge arm midpoint be connected, first switch pipe (Q1), the 4th switching tube (Q4) composition bridge arm midpoint be sequentially connected resonance electricity
Hold (Cr1), resonant inductance (Lr1), resonant inductance (Lr1) and second switch pipe (Q2), the 3rd switching tube (Q3) connection midpoint point
Resonance transformer (Tr1) both end of which, the another two ends of resonance transformer (Tr1) and the first full-bridge rectification diode are not connected to
(D1), the second full-bridge rectification diode (D2), the 3rd full-bridge rectification diode (D3), the 4th full-bridge rectification diode (D4) composition
Full bridge rectifier be connected.
2. a kind of LLC resonant transform circuits of suitable wide range output as claimed in claim 1；It is characterized in that：Described
First derided capacitors (Crh1) and the second derided capacitors (Crh2) are the big capacitance electric capacity for being not involved in resonance, the big capacitance electric capacity
It is more than 1uF electric capacity for capacitance.
3. a kind of LLC resonant transform circuits of suitable wide range output as claimed in claim 1；It is characterized in that：Described
First derided capacitors (Crh1) and the second derided capacitors (Crh2) are the low-capacitance electric capacity for participating in resonance, and the low-capacitance electric capacity is
Capacitance is less than 1uF electric capacity.
4. a kind of LLC resonant transform circuits as claimed in claim 1；It is characterized in that：When disconnecting switching switch (S1), make
Obtain the first derided capacitors (Crh1) and the second derided capacitors (Crh2) depart from circuit, then the first switch pipe (Q1), second open
Close pipe (Q2), the 3rd switching tube (Q3), the 4th switching tube (Q4), the first full-bridge rectification diode (D1), the second full-bridge rectification two
Pole pipe (D2), the 3rd full-bridge rectification diode (D3), the 4th full-bridge rectification diode (D4), resonant capacitance (Cr1), resonant inductance
(Lr1), resonance transformer (Tr1) constitutes full-bridge LLC resonance circuits.
5. a kind of LLC resonant transform circuits as claimed in claim 1；It is characterized in that：When closure switching switch (S1), with cutting
First switch pipe (Q1), the 4th switching tube (Q4) for changing one end connection of switch (S1) are constantly in off state；Then second open
Close pipe (Q2), the 3rd switching tube (Q3), the first derided capacitors (Crh1) and the second derided capacitors (Crh2), the first full-bridge rectification two
Pole pipe (D1), the second full-bridge rectification diode (D2), the 3rd full-bridge rectification diode (D3), the 4th full-bridge rectification diode
(D4), resonant capacitance (Cr1), resonant inductance (Lr1), resonance transformer (Tr1) constitute half-bridge logical link control (LLC) resonant circuit.
6. a kind of transform method of the LLC resonant transform circuits described in utilization claim 1-3 any one, it is characterised in that
Its method is：When disconnecting switching switch (S1) so that the first derided capacitors (Crh1) and the second derided capacitors (Crh2) depart from
Circuit, then the first switch pipe (Q1), second switch pipe (Q2), the 3rd switching tube (Q3), the 4th switching tube (Q4), first is complete
Bridge commutation diode (D1), the second full-bridge rectification diode (D2), the 3rd full-bridge rectification diode (D3), the 4th full-bridge rectification two
Pole pipe (D4), resonant capacitance (Cr1), resonant inductance (Lr1), resonance transformer (Tr1) constitute full-bridge LLC resonance circuits；
When closure switching switch (S1), first switch pipe (Q1), the 4th switching tube being connected with one end of switching switch (S1)
(Q4) it is constantly in off state；Then second switch pipe (Q2), the 3rd switching tube (Q3), the first derided capacitors (Crh1) and second
Derided capacitors (Crh2), the first full-bridge rectification diode (D1), the second full-bridge rectification diode (D2), the pole of the 3rd full-bridge rectification two
Manage (D3), the 4th full-bridge rectification diode (D4), resonant capacitance (Cr1), resonant inductance (Lr1), resonance transformer (Tr1) composition
Half-bridge logical link control (LLC) resonant circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710477970.4A CN107196513A (en) | 2017-06-21 | 2017-06-21 | The LLC resonant transform circuits and its method of a kind of suitable wide range output |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710477970.4A CN107196513A (en) | 2017-06-21 | 2017-06-21 | The LLC resonant transform circuits and its method of a kind of suitable wide range output |
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| Publication Number | Publication Date |
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| CN107196513A true CN107196513A (en) | 2017-09-22 |
Family
ID=59879444
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710477970.4A Pending CN107196513A (en) | 2017-06-21 | 2017-06-21 | The LLC resonant transform circuits and its method of a kind of suitable wide range output |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108258910A (en) * | 2017-12-25 | 2018-07-06 | 浙江大学 | A kind of full-bridge LLC resonant transform circuits and its wide range output control method |
| CN109687715A (en) * | 2018-12-20 | 2019-04-26 | 江苏万帮德和新能源科技股份有限公司 | A kind of converter and its control method improving LLC gain ranging |
| CN111614267A (en) * | 2020-06-17 | 2020-09-01 | 深圳威迈斯新能源股份有限公司 | DCDC conversion circuit suitable for wide input voltage and vehicle-mounted charger |
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| US20140254208A1 (en) * | 2013-03-05 | 2014-09-11 | Futurewei Technologies, Inc. | Auxiliary Resonant Apparatus for LLC Converters |
| CN105119497A (en) * | 2015-09-29 | 2015-12-02 | 燕山大学 | Wide input range dual-bridge LLC resonant converter |
| CN105553272A (en) * | 2015-12-09 | 2016-05-04 | 燕山大学 | Straight-through prevention half-bridge LLC resonance converter |
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| CN101997413A (en) * | 2009-08-12 | 2011-03-30 | 台达电子工业股份有限公司 | Power supply converter with synchronous rectifier and control method for synchronous rectifier |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108258910A (en) * | 2017-12-25 | 2018-07-06 | 浙江大学 | A kind of full-bridge LLC resonant transform circuits and its wide range output control method |
| CN109687715A (en) * | 2018-12-20 | 2019-04-26 | 江苏万帮德和新能源科技股份有限公司 | A kind of converter and its control method improving LLC gain ranging |
| CN111614267A (en) * | 2020-06-17 | 2020-09-01 | 深圳威迈斯新能源股份有限公司 | DCDC conversion circuit suitable for wide input voltage and vehicle-mounted charger |
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Application publication date: 20170922 |