CN111600350A - 120kW high-power direct current charging module design - Google Patents

120kW high-power direct current charging module design Download PDF

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Publication number
CN111600350A
CN111600350A CN202010415749.8A CN202010415749A CN111600350A CN 111600350 A CN111600350 A CN 111600350A CN 202010415749 A CN202010415749 A CN 202010415749A CN 111600350 A CN111600350 A CN 111600350A
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CN
China
Prior art keywords
circuit
power
charging
output
output voltage
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.)
Withdrawn
Application number
CN202010415749.8A
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Chinese (zh)
Inventor
范建华
徐鹏飞
王庆园
司胜利
仝西伟
张建
李伟
吴雪梅
卢峰
林志超
程艳艳
叶齐
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shenyang Keyuan State Grid Power Engineering Survey And Design Co ltd
Qingdao Topscomm Communication Co Ltd
Original Assignee
Shenyang Keyuan State Grid Power Engineering Survey And Design Co ltd
Qingdao Topscomm Communication Co Ltd
Priority date (The priority date 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 date listed.)
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Publication date
Application filed by Shenyang Keyuan State Grid Power Engineering Survey And Design Co ltd, Qingdao Topscomm Communication Co Ltd filed Critical Shenyang Keyuan State Grid Power Engineering Survey And Design Co ltd
Priority to CN202010415749.8A priority Critical patent/CN111600350A/en
Publication of CN111600350A publication Critical patent/CN111600350A/en
Withdrawn legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/20—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by converters located in the vehicle
    • B60L53/22—Constructional details or arrangements of charging converters specially adapted for charging electric vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/30—Constructional details of charging stations
    • B60L53/31—Charging columns specially adapted for electric vehicles
    • 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
    • H02M1/00—Details of apparatus for conversion
    • H02M1/14—Arrangements for reducing ripples from dc input or output
    • 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
    • H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
    • H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
    • H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
    • H02M3/158—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
    • H02M3/1584—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load with a plurality of power processing stages connected in parallel
    • 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
    • H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
    • H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
    • H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
    • H02M3/158—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
    • H02M3/1584—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load with a plurality of power processing stages connected in parallel
    • H02M3/1586—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load with a plurality of power processing stages connected in parallel switched with a phase shift, i.e. interleaved
    • 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
    • Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
    • 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
    • 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
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10—Technologies relating to charging of electric vehicles
    • Y02T90/12—Electric charging stations
    • 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
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10—Technologies relating to charging of electric vehicles
    • Y02T90/14—Plug-in electric vehicles

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Dc-Dc Converters (AREA)

Abstract

The invention discloses a 120kW high-power direct current charging module design, and belongs to the field of charging of direct current automobile charging piles. The technical scheme comprises a pre-charging unit, a DC/DC conversion unit and an output voltage stabilizing unit; the pre-charging unit comprises a sampling circuit and a pre-charging circuit; the DC/DC conversion unit comprises a DC/DC conversion circuit, a sampling circuit, a driving circuit, a protection circuit and a control circuit; the output voltage stabilizing unit comprises a sampling circuit and a voltage stabilizing circuit; the 120kW high-power direct-current charging module adopts a Pulse Width Modulation (PWM) strategy and a two-path staggered parallel technology, so that the power level is high, and 120kW power can be output to the maximum; the power density is high, and the efficiency is high; the output voltage has the characteristics of higher voltage adaptability and the like from 200V-700V of direct current.

Description

120kW high-power direct current charging module design
Technical Field
The invention relates to the field of charging modules of direct-current automobile charging piles, in particular to a 120kW high-power direct-current charging module design.
Background
The direct current charging module is used as an intermediate link between 750V direct current and an electric vehicle battery and is a channel for energy conversion. The main function is to convert the 750V DC voltage into the voltage required by the charging of the automobile battery, dynamically adjust the charging current or voltage parameters according to the data provided by a Battery Management System (BMS), execute corresponding actions and complete the charging process.
In the industry of direct current charging piles at present, the realization of high-power charging needs the parallel connection of a plurality of charging modules, generally, the power of a single direct current charging pile is not large, and the quick charging of an electric automobile with a large-capacity battery cannot be realized; multiple charging modules result in inefficiency and low power density.
Disclosure of Invention
In order to solve the problems, the invention provides a 120kW high-power direct current charging module design. The technical scheme of the invention is as follows: the DC/DC conversion circuit comprises a pre-charging unit, a DC/DC conversion unit and an output voltage stabilizing unit; the pre-charging unit comprises a sampling circuit and a pre-charging circuit, the switching of the pre-charging circuit is controlled through a relay, and whether the switching is carried out or not is judged through the sampling circuit; the DC/DC conversion unit comprises a DC/DC conversion circuit, a sampling circuit, a driving circuit, a protection circuit and a control circuit, adopts a Pulse Width Modulation (PWM) strategy and a two-way staggered parallel technology, adjusts the duty ratio of a driving signal by the input voltage through two-way parallel power modules IGBT to realize the adjustment of output voltage, and outputs the output voltage to an output voltage stabilizing circuit through a filter inductor to realize stable direct current output; the output voltage stabilizing unit comprises a sampling circuit and a voltage stabilizing circuit.
Preferably, two-way interleaving parallel technology, 2 output channels are divided in the module to be output in a parallel mode, single-way controlled current is halved, current stress of a switch tube is reduced, and output current ripples can be effectively reduced, so that the requirement on filter inductance is reduced; the single-path has the capability of outputting 60kW power to the maximum extent, 120kW power can be output to the maximum extent during parallel output, and the power level is far higher than that of the traditional direct-current charging module.
Preferably, the frequency of a Pulse Width Modulation (PWM) strategy driving signal is fixed, and the output voltage is adjusted by adjusting the duty ratio of the driving signal, so that the output voltage is changed from 200V-700V of direct current.
Preferably, the DC/DC conversion circuit consists of 2 power modules IGBT and 2 filter inductors.
Preferably, the power module IGBT belongs to a high voltage high power half bridge IGBT.
Compared with the prior art, the invention has the beneficial effects that: the power level is higher than that of a traditional direct current charging module, and 120kW power can be output to the maximum. By adopting the two-path staggered parallel technology, the current stress of the switching tube is reduced, and the output current ripple is effectively reduced, so that the requirement on the filter inductor is reduced, and the cost is reduced. The output voltage has higher voltage adaptability from 200V-700V of direct current. The power density is high, and a multilayer combination mode is adopted, so that the volume is reduced, and the power density is improved; the maximum efficiency is more than 98.5% according to the variation of the output voltage.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application;
FIG. 1 is an equivalent block diagram of a 120kW high-power DC charging module;
FIG. 2 is a topology structure diagram of a 120kW high-power DC charging module;
FIG. 3 is a design diagram of a 120kW high-power DC charging module scheme.
Detailed Description
Hereinafter, embodiments of the present invention will be further described with reference to the accompanying drawings.
The invention provides a 120kW high-power direct current charging module design, which not only can improve the capacity of a converter, but also has the advantages of high efficiency, high power level and the like, and the output power has higher applicability;
an equivalent block diagram of a 120kW high-power direct-current charging module applied by the invention is shown in FIG. 1, a topological structure diagram is shown in FIG. 2, a system scheme design diagram is shown in FIG. 3, and the design scheme in FIG. 3 is as follows:
a120 kW high-power direct current charging module design comprises a pre-charging unit, a DC/DC conversion unit and an output voltage stabilizing unit; the pre-charging unit comprises a sampling circuit and a pre-charging circuit, the switching of the pre-charging circuit is controlled through a relay, and whether the switching is carried out or not is judged through the sampling circuit; the DC/DC conversion unit comprises a DC/DC conversion circuit, a sampling circuit, a driving circuit, a protection circuit and a control circuit, adopts a Pulse Width Modulation (PWM) strategy and a two-way staggered parallel technology, adjusts the duty ratio of a driving signal by the input voltage through two-way parallel power modules IGBT to realize the adjustment of output voltage, and outputs the output voltage to an output voltage stabilizing circuit through a filter inductor to realize stable direct current output; the output voltage stabilizing unit comprises a sampling circuit and a voltage stabilizing circuit.
According to the two-path staggered parallel technology, 2 output channels are divided in the module and output in a parallel mode, the single-path controlled current is halved, the current stress of a switching tube is reduced, and output current ripples can be effectively reduced, so that the requirement on filter inductance is reduced; the single-path has the capability of outputting 60kW power to the maximum extent, 120kW power can be output to the maximum extent during parallel output, and the power level is far higher than that of the traditional direct-current charging module.
The frequency of a Pulse Width Modulation (PWM) strategy driving signal is fixed, and the duty ratio of the PWM strategy driving signal is adjusted to realize the adjustment of the output voltage, so that the output voltage is changed from 200V-700V of direct current.
The DC/DC conversion circuit comprises 2 power modules IGBT and 2 filter inductors. The power module IGBT belongs to a high-voltage high-power half-bridge IGBT.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification and drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims (5)

1. The utility model provides a high-power direct current of 120kW module design that charges which characterized in that: the DC/DC conversion circuit comprises a pre-charging unit, a DC/DC conversion unit and an output voltage stabilizing unit; the pre-charging unit comprises a sampling circuit and a pre-charging circuit, the switching of the pre-charging circuit is controlled through a relay, and whether the switching is carried out or not is judged through the sampling circuit; the DC/DC conversion unit comprises a DC/DC conversion circuit, a sampling circuit, a driving circuit, a protection circuit and a control circuit, adopts a Pulse Width Modulation (PWM) strategy and a two-way staggered parallel technology, adjusts the duty ratio of a driving signal by the input voltage through two-way parallel power modules IGBT to realize the adjustment of output voltage, and outputs the output voltage to an output voltage stabilizing circuit through a filter inductor to realize stable direct current output; the output voltage stabilizing unit comprises a sampling circuit and a voltage stabilizing circuit.
2. The 120kW high-power direct-current charging module design according to claim 1, wherein two paths of interleaving and parallel technology are adopted, the interior of the module is divided into 2 paths of output channels which are output in a parallel mode, the single path of controlled current is halved, the current stress of a switching tube is reduced, and output current ripples can be effectively reduced, so that the requirement on filter inductance is reduced; the single-path has the capability of outputting 60kW power to the maximum extent, 120kW power can be output to the maximum extent during parallel output, and the power level is far higher than that of the traditional direct-current charging module.
3. The 120kW high-power direct current charging module design is characterized in that according to the Pulse Width Modulation (PWM) strategy, the driving signal frequency is fixed, and the output voltage is adjusted by adjusting the duty ratio of the driving signal frequency, so that the output voltage is changed from direct current 200V to 700V.
4. The 120kW high-power direct-current charging module design according to claim 1, wherein the DC/DC conversion circuit consists of 2 power modules IGBT and 2 filter inductors.
5. The 120kW high power DC charging module design according to claim 4, wherein the step power module IGBT belongs to a high voltage high power half bridge IGBT.
CN202010415749.8A 2020-05-16 2020-05-16 120kW high-power direct current charging module design Withdrawn CN111600350A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106114265A (en) * 2016-07-29 2016-11-16 武汉理工大学 A kind of electric automobile high power DC charger/stake DCDC converting means and control method
CN205930315U (en) * 2016-07-29 2017-02-08 武汉理工大学 High -power direct current charger stake DCDC converting means of electric automobile
CN106451710A (en) * 2016-11-24 2017-02-22 湖北文理学院 Charging pile, charging system and charging control method
CN109494983A (en) * 2017-09-13 2019-03-19 株洲中车时代电气股份有限公司 A kind of DC converter

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106114265A (en) * 2016-07-29 2016-11-16 武汉理工大学 A kind of electric automobile high power DC charger/stake DCDC converting means and control method
CN205930315U (en) * 2016-07-29 2017-02-08 武汉理工大学 High -power direct current charger stake DCDC converting means of electric automobile
CN106451710A (en) * 2016-11-24 2017-02-22 湖北文理学院 Charging pile, charging system and charging control method
CN109494983A (en) * 2017-09-13 2019-03-19 株洲中车时代电气股份有限公司 A kind of DC converter

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Application publication date: 20200828