CN207173336U - A kind of DC charging device for electromobile battery - Google Patents
A kind of DC charging device for electromobile battery Download PDFInfo
- Publication number
- CN207173336U CN207173336U CN201721143295.3U CN201721143295U CN207173336U CN 207173336 U CN207173336 U CN 207173336U CN 201721143295 U CN201721143295 U CN 201721143295U CN 207173336 U CN207173336 U CN 207173336U
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- Prior art keywords
- charging
- current
- secondary winding
- direct
- wave filtering
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- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
-
- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/72—Electric energy management in electromobility
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Dc-Dc Converters (AREA)
Abstract
The utility model discloses a kind of DC charging device for electromobile battery, including distribution transformer and more than one direct-current charging post, distribution transformer includes a three-phase first winding and more than one three-phase secondary winding, three-phase secondary winding is identical with the number of direct-current charging post, each three-phase secondary winding is separate and is not directly grounded, charging pile controller and high-frequency PWM current rectifying and wave filtering circuit are provided with each direct-current charging post, charging pile controller is used for the output current and power factor for controlling high-frequency PWM current rectifying and wave filtering circuit, one three-phase secondary winding of the input connection distribution transformer of high-frequency PWM current rectifying and wave filtering circuit, the charging inlet of the output end connection direct-current charging post of high-frequency PWM current rectifying and wave filtering circuit.The utility model reduces DC charging device structure and the complexity of circuit, greatly reduces the Installed capital cost and operation and maintenance cost of DC charging device.
Description
Technical field
It the utility model is related to battery boosting technology field, more particularly to a kind of DC charging for electromobile battery
Device.
Background technology
When electromobile battery charges, to meet rapidity requirement, DC charging device need to be used, DC charging device leads to
Distribution transformer access power network is crossed, is powered using the secondary winding of distribution transformer.At present, DC charging device is opened using multiple
Powered-down source coordinates control device to realize, because electromobile battery has the characteristics of capacity is big, by the performance impact of electronic device,
The capacity of single switch power supply is relatively small, can not meet the charging requirement of large-capacity battery, therefore existing direct-current charging post
It is to be formed by multiple switch power sources in parallel, control device is carried out according to the charge requirement of battery to each Switching Power Supply in parallel
Power distribution.Further, since the charging pile of DC charging device shares one group of secondary winding of distribution transformer, to avoid short circuit
Failure by input and output of the high frequency transformer to Switching Power Supply, it is necessary to carry out electrical isolation, the electric power that said apparatus uses is electric
Sub- device is more, and wiring is complicated, therefore holistic cost is higher, and failure is more and difficult in maintenance.
Utility model content
The purpose of this utility model is to provide a kind of DC charging device for electromobile battery, can reduce and fill
The complexity of electric installation structure and circuit, DC charging device Installed capital cost is reduced, reduce operation and maintenance cost.
To achieve the above object, the technical solution adopted in the utility model is：
A kind of DC charging device for electromobile battery, including distribution transformer and more than one DC charging
Stake, described distribution transformer include a three-phase first winding and more than one three-phase secondary winding, and described three-phase is secondary
Winding is identical with the number of direct-current charging post, and each three-phase secondary winding is separate and is not directly grounded, each DC charging
Charging pile controller and high-frequency PWM current rectifying and wave filtering circuit are provided with stake, described charging pile controller is used to control high frequency
The output current and power factor of PWM current rectifying and wave filtering circuits, the input connection distribution transformer of high-frequency PWM current rectifying and wave filtering circuit
A three-phase secondary winding, high-frequency PWM current rectifying and wave filtering circuit output end connection direct-current charging post charging inlet.
Described high-frequency PWM current rectifying and wave filtering circuit uses current-type PWM converter, including wave filter, rectifier bridge, afterflow two
Pole pipe, energy storage inductor and filter capacitor, the three-phase secondary winding of described distribution transformer connect rectifier bridge by wave filter
Input, the negative pole of positive output end connection fly-wheel diode of described rectifier bridge and one end of energy storage inductor, energy storage inductor
The other end connects the positive pole of filter capacitor, the positive pole of negative output terminal connection fly-wheel diode of rectifier bridge and bearing for filter capacitor
Pole.
The switching tube that described rectifier bridge uses is insulated gate bipolar transistor or field-effect transistor.
The utility model uses the distribution transformer with multiple three-phase secondary windings, utilizes each three-phase secondary winding phase
It is mutually independent and the characteristics of be not directly grounded so that a three-phase secondary winding is only powered for a direct-current charging post, is effectively realized
Between each direct-current charging post and the electrical isolation between direct-current charging post and ground, making for high-frequency isolation transformer is avoided
With reducing component, reduce the cost of investment of charging device；
The utility model uses high-frequency PWM current rectifying and wave filtering circuit, completes to export electricity to current rectifying and wave filtering circuit by PWM
The control of stream and power factor, makes it meet the charge requirement of electromobile battery, is not only effectively simplified the electric of charging pile
Structure, and the power factor of charging device is improved, reduce harmonic pollution of the charging device to power network；
The electronic component that the utility model uses is less, and wiring is simple, and can expand capacity by more parallel connections,
The production cost of charging device is greatly reduced, improves the reliability of charging device.
Brief description of the drawings
Fig. 1 is circuit theory diagrams of the present utility model.
Embodiment
As shown in figure 1, a kind of DC charging device for electromobile battery described in the utility model, including distribution
Transformer 1 and more than one direct-current charging post, distribution transformer 1 include a three-phase first winding 11 and more than one three-phase two
Secondary winding 12, three-phase secondary winding 12 is identical with the number of direct-current charging post, and each three-phase secondary winding 12 is independently of each other and not
Be directly grounded, each three-phase secondary winding 12 is that a direct-current charging post is powered, realize between each direct-current charging post and
Electrical isolation between direct-current charging post and ground, avoid charging device from carrying out electrical isolation using high frequency transformer, reduce throwing
Provide cost.Because the structure of each direct-current charging post of the present utility model is identical, therefore two are drawn in figure and is illustrated, below
It is described in detail for one of them, remaining omission.
Charging pile controller and high-frequency PWM current rectifying and wave filtering circuit, high frequency are provided with direct-current charging post of the present utility model
One three-phase secondary winding 12 of the input connection distribution transformer 1 of PWM current rectifying and wave filtering circuits, high-frequency PWM rectifying and wave-filtering electricity
The charging inlet of the output end connection direct-current charging post on road.Charging pile controller is used to complete to rectifying and wave-filtering by PWM
The control of circuit output current size and power factor, it is filtered current ripples, current stabilization situation is reached electromobile battery
Demand.Specifically, after the vehicle mounted battery management system of the charging inlet connection electric car of direct-current charging post, charging pile controller is pressed
The requirement modulation carrier wave of charging strategy and raising charging device power factor according to battery, and then control high-frequency PWM rectification
The conducting and cut-off of switching tube in filter circuit, realize rectification and the size control of output current.Charging pile controller and car
It is prior art to carry battery management system and establish connection and modulate carrier wave to carry out rectification and size of current control, no longer superfluous herein
State.
High-frequency PWM current rectifying and wave filtering circuit of the present utility model uses current-type PWM converter, including by filter inductance L1,
The wave filter of L2, L3 and storage capacitor C1, C2, C3 composition, by switching tube V1, V2, V3, V4, V5, V6 and diode D1, D2,
Rectifier bridge, sustained diode 7, energy storage inductor L4 and the filter capacitor C4 of D3, D4, D5, D6 composition, the three-phase of distribution transformer 1
Secondary winding 12 connects the input of rectifier bridge, the negative pole of the positive output end connection sustained diode 7 of rectifier bridge by wave filter
With energy storage inductor L4 one end, energy storage inductor L4 other end connection filter capacitor C4 positive pole, the negative output terminal of rectifier bridge connects
Connect fly-wheel diode D7 positive pole and filter capacitor C4 negative pole.The switching tube that each rectifying bridge arm uses is insulated gate bipolar
Transistor or field-effect transistor, i.e. IGBT or metal-oxide-semiconductor, the modulating wave of charging pile controller output pass through electrical isolation and power
The grid that driving carrys out controlling switch pipe completes rectification and size of current regulation and control, by charging pile lead-out terminal U to electric car electric power storage
Charge in pond.It should be noted that the line voltage of each three-phase secondary side winding 12 of distribution transformer 1 of the present utility model is equal to
Highest battery tension and modulation loss voltage and 15% power network fluctuation voltage sum.
The utility model forms high-capacity direct current charging pile using special distribution transformer and current-type PWM converter,
The complexity of charging device is not only effectively reduced, reduces cost of investment and maintenance cost, while improve charging device
Power factor, reduce the harmonic pollution to power network.
Claims (3)
- A kind of 1. DC charging device for electromobile battery, it is characterised in that：Including distribution transformer and more than one Direct-current charging post, described distribution transformer includes a three-phase first winding and more than one three-phase secondary winding, described Three-phase secondary winding is identical with the number of direct-current charging post, and each three-phase secondary winding is separate and is not directly grounded, each Charging pile controller and high-frequency PWM current rectifying and wave filtering circuit are provided with direct-current charging post, described charging pile controller is used for The output current and power factor of high-frequency PWM current rectifying and wave filtering circuit are controlled, the input connection of high-frequency PWM current rectifying and wave filtering circuit is matched somebody with somebody One three-phase secondary winding of piezoelectric transformer, the charging of the output end connection direct-current charging post of high-frequency PWM current rectifying and wave filtering circuit Mouthful.
- A kind of 2. DC charging device for electromobile battery as claimed in claim 1, it is characterised in that：Described height Frequency PWM current rectifying and wave filtering circuits use current-type PWM converter, including wave filter, rectifier bridge, fly-wheel diode, energy storage inductor and Filter capacitor, the three-phase secondary winding of described distribution transformer connect the input of rectifier bridge by wave filter, and described is whole Flow the negative pole of positive output end connection fly-wheel diode and one end of energy storage inductor of bridge, the other end connection filtered electrical of energy storage inductor The positive pole of appearance, the positive pole of negative output terminal connection fly-wheel diode and the negative pole of filter capacitor of rectifier bridge.
- A kind of 3. DC charging device for electromobile battery as claimed in claim 2, it is characterised in that：Described is whole The switching tube that stream bridge uses is insulated gate bipolar transistor or field-effect transistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721143295.3U CN207173336U (en) | 2017-09-07 | 2017-09-07 | A kind of DC charging device for electromobile battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721143295.3U CN207173336U (en) | 2017-09-07 | 2017-09-07 | A kind of DC charging device for electromobile battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207173336U true CN207173336U (en) | 2018-04-03 |
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ID=61743056
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721143295.3U Active CN207173336U (en) | 2017-09-07 | 2017-09-07 | A kind of DC charging device for electromobile battery |
Country Status (1)
| Country | Link |
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| CN (1) | CN207173336U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108767951A (en) * | 2018-06-01 | 2018-11-06 | 薛洛良 | A kind of DC charging system for electromobile battery |
| EP3576271A1 (en) * | 2018-06-01 | 2019-12-04 | Xue, Luoliang | Dc charging system for storage battery of electric vehicle |
| CN111674275A (en) * | 2020-06-18 | 2020-09-18 | 薛洛良 | Electric vehicle direct current charging system adopting transformer to output 1250V voltage |
| WO2023168757A1 (en) * | 2022-03-09 | 2023-09-14 | 薛洛良 | Parallel connection method for balance-to-ground of output of csr high-frequency pwm rectification circuit |
-
2017
- 2017-09-07 CN CN201721143295.3U patent/CN207173336U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108767951A (en) * | 2018-06-01 | 2018-11-06 | 薛洛良 | A kind of DC charging system for electromobile battery |
| EP3576271A1 (en) * | 2018-06-01 | 2019-12-04 | Xue, Luoliang | Dc charging system for storage battery of electric vehicle |
| CN111674275A (en) * | 2020-06-18 | 2020-09-18 | 薛洛良 | Electric vehicle direct current charging system adopting transformer to output 1250V voltage |
| GB2596163A (en) * | 2020-06-18 | 2021-12-22 | Xue Luoliang | Electric vehicle direct current charging system with a transformer capable of outputting a voltage of 1250 volts |
| WO2023168757A1 (en) * | 2022-03-09 | 2023-09-14 | 薛洛良 | Parallel connection method for balance-to-ground of output of csr high-frequency pwm rectification circuit |
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