CN205666668U - Parallelly connected high efficiency of flow equalizing of modularization of crisscross mode module of charging - Google Patents
Parallelly connected high efficiency of flow equalizing of modularization of crisscross mode module of charging Download PDFInfo
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- CN205666668U CN205666668U CN201620546160.0U CN201620546160U CN205666668U CN 205666668 U CN205666668 U CN 205666668U CN 201620546160 U CN201620546160 U CN 201620546160U CN 205666668 U CN205666668 U CN 205666668U
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Abstract
The utility model discloses a parallelly connected high efficiency of flow equalizing of modularization of crisscross mode module of charging, including preceding stage AC level DC behind the DC subtotal the DC part, preceding stage AC level DC behind the DC subtotal CAN bus connection is passed through to the DC part, preceding stage AC the DC part is including the EMI module, rectifier module, PFC drive, one -level auxiliary electrical power source, second grade auxiliary electrical power source, voltage current sample, RC snubber circuit, fan, interface and the LED that connect gradually, back level DC the DC part is including the MOS pipe drive circuit who connects gradually, main topology circuit, PI loop circuit, sampling circuit, auxiliary power circuit, output EMC, CAN communication circuit, temperature sampling, DC protection circuit, signal on the throne and interface circuit. The module of should charging input/output electric current ripple all reduces to 30%, adopt the parallelly connected output of flow equalizing of three -phase, modular structure can realize big power output. Having overcome the uneven branch characteristic of load that the modularization was brought, having led to the fact equipment life to shorten, defects such as fault rate increase have lengthened equipment life, have reduced the fault rate.
Description
Technical field
This utility model belongs to charging electric vehicle field, and the modular parallel current-sharing particularly to a kind of interleaving mode is high
Effect charging module.
Background technology
Along with the fast development of ev industry, the demand of electric automobile charging pile performance is increased by user day by day, and
Electric automobile charging pile is built at present small scale, quantity are few, and electric automobile charging pile correlation technique major part is also in reality
The primary stage of application.
The development trend of electric automobile is the most irresistible, and large-scale charging pile (station) is built will certainly be to local distribution
Impacting, due to the multiformity of charging electric vehicle form, and be in operation and can produce substantial amounts of harmonic pollution, these are all
The equipment such as transformator, relay protection can be impacted, even result in malfunction or the tripping of protective relaying device.Therefore, research
Electric automobile intelligent charging stake (station) be one promote electric vehicle industrialization development important process, technology, economy and
The aspects such as social benefit are also significant.
Efficiently, high power density and high performance electric automobile battery charger are the technical goals that domestic and international manufacturer is pursued.For
Obtain efficiently, high power density and high performance index, electric automobile battery charger needs to be operated under higher switching frequency,
But higher switching frequency brings bigger switching loss.Therefore, changer must use soft switch circuit to open to reduce
The loss that pass process is brought.
Utility model content
For solving to reduce the technical problem of the loss that switching process is brought, this utility model uses two-stage type AC-DC-DC to open up
Flutterring form, prime uses VIENNA rectification circuit or three-phase PFC rectification circuit, and rear class uses the LLC resonant transformation of tandem type
Device, two-way LLC resonant converter, it is achieved staggered cascade structure, reduce ripple with this.
The technical solution adopted in the utility model is: the efficient charging module of modular parallel current-sharing of a kind of interleaving mode,
Including prime AC-DC part and rear class DC-DC part；Described prime AC-DC part and rear class DC-DC part pass through CAN
Connect；EMI module that described prime AC-DC part includes being sequentially connected with, rectification module, PFC driving, one-level accessory power supply, two
Level accessory power supply, voltage x current sampling, RC absorbing circuit, fan, interface and LED；Described rear class DC-DC part includes connecting successively
The metal-oxide-semiconductor drive circuit connect, main topological circuit, PI loop circuit, sample circuit, auxiliary power circuit, output EMC, CAN communication
Circuit, temperature sampling, DC protection circuit, signal in place and interface circuit.
Preferably, described rectification module uses VIENNA rectification circuit or three-phase PFC rectification circuit.
Preferably, described main topological circuit uses two-way LLC resonant converter, it is achieved interleaving mode LLC resonant transformation is tied
Structure.
It is further preferred that described alternating expression its switching tube complementation of LLC resonant transformation structure conducting, dutycycle is 0.5.
Utility model works flow process: three-phase alternating-current supply input filters difference mode signal and common-mode signal through EMI module,
Simultaneously to exchange input open detection and protection.By VIENNA rectification circuit or three-phase PFC rectification circuit, exchange is converted into
Direct current, now can be powered to control protection electric circuit from prime output power taking by auxiliary power circuit, control PWM generator and drive
The metal-oxide-semiconductor work of rear class DC-AC inverter circuit.Prime output is through DC-AC inverter circuit, high frequency transformer, rectifying and wave-filtering electricity
Road realizes the conversion of DC-DC, it is ensured that the high accuracy of output voltage electric current and low ripple.By by output voltage, electric current and temperature
Detection information feed back to control with protection circuit and system is controlled, form a PI loop；Connect by CAN
Mouthful, charging module can carry out communication and automatically control charge mode, it is also possible to by CAN interface read work state and fault
Information, it is ensured that the safety of charging module.The elimination to output interference is achieved by output EMI module.Rear class DC-DC portion
Dividing interleaving mode LLC resonant transformation modular circuit, switching tube complementation turns on, and dutycycle is 0.5, is controlled by regulation switching frequency
Changer output electric current and voltage.For preventing bridge arm direct pass, add Dead Time, thus in switching process, introduce vibration, real
Existing no-voltage (ZVS) switch.
Prime AC-DC of the present utility model part uses VIENNA rectification circuit or three-phase PFC rectification circuit, will input three
Phase voltage is transformed to high voltage dc bus voltage, and ensure input current have higher waveform quality and higher power because of
Number.
Rear class DC-DC part uses interleaving mode LLC resonant transformation structure, and the switching tube complementation of LLC resonant converter is led
Logical, dutycycle is 0.5, controls changer output electric current and voltage by regulation switching frequency；For preventing bridge arm direct pass, add dead
District's time, thus in switching process, introduce vibration, it is achieved ZVT.
Communication can be carried out by CAN and automatically control charging between prime AC-DC part and rear class DC-DC part
Pattern, it is also possible to by CAN interface read work state and fault message.
In view of characteristic and the factor such as stabilization of equipment performance, life-span of electrical network three-phase voltage, use parallel three phase current-sharing output,
Reach high-power output purpose.
High-power system is difficult to be realized by single module, therefore uses modular construction, simultaneously take account of modularity
The load inequality brought is intrinsic, causes the shortcomings such as shortened equipment life, fault rate increase, uses load current-sharing measure, it is achieved
The load of each interleaving mode LLC resonant converter module is divided equally automatically.
The beneficial effects of the utility model are:
Prime AC-DC part uses VIENNA rectification or three-phase PFC rectification topology, rear class DC-DC part to use two
Road LLC resonant converter, it is achieved staggered cascade structure, input and output current ripples is all reduced to 30%；Use parallel three phase current-sharing
Output, modular construction, high-power output can be realized.Use load current-sharing measure, it is achieved the load of LLC resonant converter module
Automatically divide equally, overcome the load inequality that modularity brings intrinsic, cause the defects such as shortened equipment life, fault rate increase,
Extend service life of equipment, decrease fault rate.
Accompanying drawing explanation
Fig. 1 is the full theory diagram of this enforcement.
Fig. 2 is the present embodiment alternating expression LLC resonant transformation structure equivalent schematic diagram.
Detailed description of the invention
By combination accompanying drawing described further below it will be further appreciated that feature of the present utility model and advantage.Thered is provided
Embodiment is only the explanation to this utility model method, and limits remaining content that this utility model discloses never in any form.
The present embodiment adopts the following technical scheme that the efficient charging module of modular parallel current-sharing of a kind of interleaving mode, bag
Include prime AC-DC part and rear class DC-DC part；Described prime AC-DC part and rear class DC-DC part are by CAN even
Connect；EMI module that described prime AC-DC part includes being sequentially connected with, rectification module, PFC driving, one-level accessory power supply, two grades
The sampling of accessory power supply, voltage x current, RC absorbing circuit, fan, interface and LED；Described rear class DC-DC part includes being sequentially connected with
Metal-oxide-semiconductor drive circuit, main topological circuit, PI loop circuit, sample circuit, auxiliary power circuit, output EMC, CAN communication electricity
Road, temperature sampling, DC protection circuit, signal in place and interface circuit.
Described rectification module uses VIENNA rectification circuit or three-phase PFC rectification circuit.
Described main topological circuit uses two-way LLC resonant converter, it is achieved interleaving mode LLC resonant transformation structure.
Described alternating expression its switching tube complementation of LLC resonant transformation structure turns on, and dutycycle is 0.5.
Prime AC-DC part uses VIENNA rectification circuit, and input three-phase voltage is transformed to high voltage dc bus voltage,
And ensure that input current has higher waveform quality and higher power factor.
Rear class DC-DC part uses interleaving mode LLC resonant transformation structure, the working mechanism of LLC resonant converter and string
Join similar with parallel resonance changer.Switching tube complementation turns on, and dutycycle is 0.5, controls changer by regulation switching frequency
Output electric current and voltage.For preventing bridge arm direct pass, add Dead Time, thus in switching process, introduce vibration, it is achieved zero electricity
Pressure (ZVS) switch.
Communication can be carried out by CAN and automatically control charging between prime AC-DC part and rear class DC-DC part
Pattern, it is also possible to by CAN interface read work state and fault message.
In view of characteristic and the factor such as stabilization of equipment performance, life-span of electrical network three-phase voltage, use parallel three phase current-sharing output,
Reach high-power output purpose.
High-power system is difficult to be realized by single module, therefore uses modular construction, simultaneously take account of modularity
The load inequality brought is intrinsic, causes the shortcomings such as shortened equipment life, fault rate increase, uses load current-sharing measure, it is achieved
The load of each interleaving mode LLC resonant converter module is divided equally automatically.
As it is shown in figure 1, three-phase alternating-current supply filters difference mode signal and common-mode signal from input through EMI module, the most right
Exchange input open detection and protection.By VIENNA rectification circuit, exchange is converted into direct current, now can pass through accessory power supply
Circuit is powered to control protection electric circuit from prime output power taking, controls PWM generator and drives the MOS of rear class DC-AC inverter circuit
Pipe works.Prime output realizes the conversion of DC-DC through DC-AC inverter circuit, high frequency transformer, current rectifying and wave filtering circuit, it is ensured that
The high accuracy of output voltage electric current and low ripple.
By the detection information of output voltage, electric current and temperature is fed back to control with protection circuit and system is controlled
System, forms a PI loop；By CAN interface, charging module can carry out communication and automatically control charge mode, also can
Enough by CAN interface read work state and fault message, it is ensured that the safety of charging module.Finally by output EMI mould
Block achieves the elimination to output interference.
As in figure 2 it is shown, be rear class DC-DC part alternating expression LLC resonant transformation structure equivalent schematic diagram.Its switching tube is complementary
Conducting, dutycycle is 0.5, controls changer output electric current and voltage by regulation switching frequency.For preventing bridge arm direct pass, add
Dead Time, thus in switching process, introduce vibration, it is achieved no-voltage (ZVS) switchs.
When switch transistor T 1, T4 conducting, resonance current rises with sinusoidal form, and commutation diode D5 turns on, output capacitance electricity
Pressure is by transformator clamper, exciting current linear rise.When exciting current is equal with resonance current, electric current on commutation diode D5
Natural zero-crossing turns off, and magnetizing inductance participates in resonance, and owing to magnetizing inductance is relatively big, resonance current can be considered constant.
When switch transistor T 1, T4 zero-pressure turn off, T1 and T4 parasitic capacitance is charged by resonance current, simultaneously to T2 and T3 parasitism electricity
Discharge capacitor.When switch transistor T 2, T3 parasitic capacitor voltage are discharged to zero, the resonance current diode by T2 and T3, T2 and T3 leads
It is logical that to realize no-voltage open-minded.In the later half cycle, changer duty is similar to first half cycle.
In sum, the present embodiment prime AC-DC part uses VIENNA rectification topology, rear class DC-DC part to adopt
Use two-way LLC resonant converter, it is achieved staggered cascade structure, reduce ripple with this, thus DC voltage is converted to battery
Voltage and current value needed for charging, and ensure higher current/voltage precision and relatively low current/voltage ripple.For big merit
Rate system uses the equal Flow Technique of modular parallel, it is achieved automatically dividing equally of each interleaving mode LLC resonant converter module load, prolong
Long service life of equipment, reduces fault rate.
Claims (4)
1. the efficient charging module of modular parallel current-sharing of an interleaving mode, it is characterised in that: include prime AC-DC part and
Rear class DC-DC part；Described prime AC-DC part and rear class DC-DC part are connected by CAN；Described prime AC-DC portion
Divide and include that the EMI module being sequentially connected with, rectification module, PFC driving, one-level accessory power supply, two grades of accessory power supplys, voltage x current are adopted
Sample, RC absorbing circuit, fan, interface and LED；Described rear class DC-DC part includes metal-oxide-semiconductor drive circuit, the master being sequentially connected with
Topological circuit, PI loop circuit, sample circuit, auxiliary power circuit, output EMC, CAN communication circuit, temperature sampling, DC protect
Circuit, signal in place and interface circuit.
The efficient charging module of modular parallel current-sharing of interleaving mode the most according to claim 1, it is characterised in that: described
Rectification module uses VIENNA rectification circuit or three-phase PFC rectification circuit.
The efficient charging module of modular parallel current-sharing of interleaving mode the most according to claim 1, it is characterised in that: described
Main topological circuit uses two-way LLC resonant converter, it is achieved interleaving mode LLC resonant transformation structure.
The efficient charging module of modular parallel current-sharing of interleaving mode the most according to claim 3, it is characterised in that: described
Alternating expression its switching tube complementation of LLC resonant transformation structure turns on, and dutycycle is 0.5.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620546160.0U CN205666668U (en) | 2016-06-07 | 2016-06-07 | Parallelly connected high efficiency of flow equalizing of modularization of crisscross mode module of charging |
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| CN201620546160.0U CN205666668U (en) | 2016-06-07 | 2016-06-07 | Parallelly connected high efficiency of flow equalizing of modularization of crisscross mode module of charging |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108092516A (en) * | 2017-12-26 | 2018-05-29 | 北京无线电测量研究所 | A kind of modular water cold anticyclone power supply |
| CN108233502A (en) * | 2018-03-29 | 2018-06-29 | 中国矿业大学(北京) | A kind of three-phase electricity charging circuit configuration |
| CN108270348A (en) * | 2018-02-28 | 2018-07-10 | 深圳市鼎硕同邦科技有限公司 | The direct current output low-frequency ripple suppression circuit and its control method of digital charge machine |
| CN108270347A (en) * | 2018-02-28 | 2018-07-10 | 深圳市鼎硕同邦科技有限公司 | The direct current output low-frequency ripple compensation circuit and its control method of digital charge machine |
| CN109039120A (en) * | 2018-09-10 | 2018-12-18 | 重庆大全泰来电气有限公司 | A kind of power-supply system of single crystal growing furnace |
| CN109039135A (en) * | 2018-08-31 | 2018-12-18 | 长沙威克电力技术科技有限公司 | It is declined the sliding formwork current-sharing control method of inverter based on interleaving inverse excitation |
| CN109802574A (en) * | 2019-01-31 | 2019-05-24 | 北京无线电测量研究所 | A kind of tandem type high voltage input power module control method and device |
| CN110752760A (en) * | 2019-10-31 | 2020-02-04 | 广州市凯辉电子有限公司 | Switching power supply circuit and switching power supply thereof |
| CN112994468A (en) * | 2021-03-03 | 2021-06-18 | 国创移动能源创新中心(江苏)有限公司 | Direct current charging module output series-parallel circuit and control method thereof |
| CN113258800A (en) * | 2021-07-16 | 2021-08-13 | 深圳市洛仑兹技术有限公司 | Bidirectional power supply equipment, power supply control method and device |
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2016
- 2016-06-07 CN CN201620546160.0U patent/CN205666668U/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108092516A (en) * | 2017-12-26 | 2018-05-29 | 北京无线电测量研究所 | A kind of modular water cold anticyclone power supply |
| CN108270348A (en) * | 2018-02-28 | 2018-07-10 | 深圳市鼎硕同邦科技有限公司 | The direct current output low-frequency ripple suppression circuit and its control method of digital charge machine |
| CN108270347A (en) * | 2018-02-28 | 2018-07-10 | 深圳市鼎硕同邦科技有限公司 | The direct current output low-frequency ripple compensation circuit and its control method of digital charge machine |
| CN108270347B (en) * | 2018-02-28 | 2024-03-05 | 深圳市鼎硕同邦科技有限公司 | DC output low-frequency ripple compensation circuit of digital charger and control method thereof |
| CN108270348B (en) * | 2018-02-28 | 2024-03-08 | 深圳市鼎硕同邦科技有限公司 | Direct-current output low-frequency ripple suppression circuit of digital charger and control method thereof |
| CN108233502A (en) * | 2018-03-29 | 2018-06-29 | 中国矿业大学(北京) | A kind of three-phase electricity charging circuit configuration |
| CN109039135A (en) * | 2018-08-31 | 2018-12-18 | 长沙威克电力技术科技有限公司 | It is declined the sliding formwork current-sharing control method of inverter based on interleaving inverse excitation |
| CN109039120A (en) * | 2018-09-10 | 2018-12-18 | 重庆大全泰来电气有限公司 | A kind of power-supply system of single crystal growing furnace |
| CN109802574A (en) * | 2019-01-31 | 2019-05-24 | 北京无线电测量研究所 | A kind of tandem type high voltage input power module control method and device |
| CN110752760A (en) * | 2019-10-31 | 2020-02-04 | 广州市凯辉电子有限公司 | Switching power supply circuit and switching power supply thereof |
| CN112994468A (en) * | 2021-03-03 | 2021-06-18 | 国创移动能源创新中心(江苏)有限公司 | Direct current charging module output series-parallel circuit and control method thereof |
| CN113258800A (en) * | 2021-07-16 | 2021-08-13 | 深圳市洛仑兹技术有限公司 | Bidirectional power supply equipment, power supply control method and device |
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