CN105978362A - Electric energy conversion circuit, charger, charging station and charging system for electric vehicle - Google Patents
Electric energy conversion circuit, charger, charging station and charging system for electric vehicle Download PDFInfo
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- CN105978362A CN105978362A CN201610427118.1A CN201610427118A CN105978362A CN 105978362 A CN105978362 A CN 105978362A CN 201610427118 A CN201610427118 A CN 201610427118A CN 105978362 A CN105978362 A CN 105978362A
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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
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
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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
- B60L53/10—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 the energy transfer between the charging station and the vehicle
- B60L53/11—DC charging controlled by the charging station, e.g. mode 4
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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
- B60L53/24—Using the vehicle's propulsion converter for charging
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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
- B60L53/60—Monitoring or controlling charging stations
- B60L53/67—Controlling two or more charging stations
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0042—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by the mechanical construction
- H02J7/0045—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by the mechanical construction concerning the insertion or the connection of the batteries
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
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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
- B60L2210/00—Converter types
- B60L2210/10—DC to DC converters
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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
- B60L2210/00—Converter types
- B60L2210/30—AC to DC converters
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2310/00—The network for supplying or distributing electric power characterised by its spatial reach or by the load
- H02J2310/40—The network being an on-board power network, i.e. within a vehicle
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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
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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
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
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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
- Y02T10/72—Electric energy management in electromobility
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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
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/92—Energy efficient charging or discharging systems for batteries, ultracapacitors, supercapacitors or double-layer capacitors specially adapted for vehicles
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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
- 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
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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
- 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
Abstract
The invention discloses an electric energy conversion circuit, a charger, a charging station and a charging system for an electric vehicle. The electric energy conversion circuit is applied to the charger for charging the electric vehicle. The circuit comprises an AC/DC module, and N shunt-wound DC/DC modules, wherein the alternating current side of the AC/DC module is connected with an alternating current power supply, and used for converting the alternating voltage input by the alternating current power supply into a direct current voltage and outputting the direct current voltage through the direct current side; the input ends of all the DC/DC modules are jointly connected to the direct current side of the AC/DC module; and the output ends of all the DC/DC modules are jointly used as the charging output port, and are used for performing voltage and/or current modulation on the direct current voltage output by the AC/DC module, and outputting the modulated voltage and/or current to the power supply of the to-be-charged electric vehicle through the charging output port. According to the invention, the design of the charger system is simplified; the reliability of the product is greatly improved; and meanwhile, the cost of the system is greatly lowered.
Description
Technical field
The present invention relates to charging electric vehicle field, particularly to electrical energy conversion circuit, charger, charging station and charging system for electric automobile.
Background technology
Electric automobile has become as the trend that future development green cleaning is economic, according to energy-conservation and new-energy automobile industrial development planning (2012-2020) planning, to the year two thousand twenty, pure electric automobile and plug-in hybrid-power automobile production capacity reach 2,000,000, accumulative volume of production and marketing more than 5,000,000, fuel cell car, automobile-used hydrogen energy source industry and international synchronized development.Electrically-charging equipment construction adapts with new-energy automobile production and marketing scale, plans according to " 13 ", it is contemplated that to the year two thousand twenty, the centralized charging station of electric automobile will rise to 1.2 ten thousand, and growth by 100 times is reached 4,500,000 by distributing charging pile quantity；Centralized charging station major part uses high power DC charger equipment, and general power is at 60KW ~ 180KW.
The commonly used modular construction of electrical energy conversion circuit of DC charging motor at present, current main product is the power cell of 10KW；Modular benefit is that system development is simple, as long as different system power carries out wired in parallel；The commonly used modular design of electrical energy conversion circuit of DC charging motor at present, each inside modules includes two pieces of main circuits: an AC/DC circuit, a DC/DC circuit, modular structure is as shown in Figure 1.AC/DC circuit (or claiming module) is main is converted to DC voltage by alternating voltage, uses non-isolated design；DC/DC circuit is substantially carried out the modulation of output voltage and electric current, and due to device reason, the peak power of isolation DC/DC can only accomplish about 10KW at present；The cost of one 10KW charging module is: AC/DC part is 800 yuan, and the cost of DC/DC part is 1200 yuan.Owing to the output of DC charging motor is bigger, therefore, current DC charging motor realizes often through the scheme of wired in parallel, as shown in Figure 2.The modular power of main flow is 10KW the most in the market, and the charger power of main flow is 100KW.Therefore, design the DC charging motor of a 100KW, need 10 wired in parallel；The feature of this scheme is that AC/DC circuit is the same with DC/DC circuit quantity, has symmetry characteristic.
But the shortcoming of prior art is the component number multiplication of system, and the design of system is more complicated, and the fraction defective of system can be greatly increased, and the reliability of product is relatively low, and simultaneity factor is relatively costly, and the investment repayment time causing charging station is longer.
Summary of the invention
It is an object of the invention to provide a kind of electrical energy conversion circuit, charger, charging station and charging system for electric automobile, to simplify the design of charger system, be greatly improved the reliability of product, make system cost be substantially reduced simultaneously.
On the one hand, the embodiment of the present invention provides a kind of electrical energy conversion circuit, is applied in the charger of charging electric vehicle, including:
One AC/DC module, its AC connects alternating current power supply, for the alternating voltage that alternating current power supply inputs is converted to DC voltage and is exported by DC side；And
The DC/DC module of N number of parallel connection, wherein, the input of all DC/DC modules is connected to the DC side of described AC/DC module together, the outfan of all DC/DC modules is together as charging output port, in voltage after being modulated by the output of described charging output port after the DC voltage of described AC/DC module output is carried out the modulation of voltage and/or electric current and/or electric current to the power supply of electric automobile to be charged；Wherein N is the natural number more than or equal to 2.
Optionally, the value of described N is relevant to the output of described charger, and power is the biggest, and the value of N is the biggest, and power is the least, and the value of N is the least.
Optionally, described DC/DC module uses isolation DC/DC module.
The embodiment of the present invention also provides for a kind of electrical energy conversion circuit, is applied in the charger of charging electric vehicle, including:
M AC/DC module in parallel, the AC of all AC/DC modules is connected to alternating current power supply together as input, the DC side of all AC/DC modules is together as outfan, for the alternating voltage that alternating current power supply inputs is converted to DC voltage and is exported by DC side；And
The DC/DC module of N number of parallel connection, wherein, the input of all DC/DC modules is connected to the outfan of described AC/DC module together, the outfan of all DC/DC modules is together as charging output port, in voltage after being modulated by the output of described charging output port after the DC voltage of described AC/DC module output is carried out the modulation of voltage and/or electric current and/or electric current to the power supply of electric automobile to be charged；Wherein N and M is the natural number more than or equal to 2, and M is less than N.
Optionally, the value of described M with N is relevant to the output of described charger, and power is the biggest, and the value of N and M is the biggest, and power is the least, and the value of N and M is the least.
Optionally, described DC/DC module uses isolation DC/DC module.
On the other hand, the embodiment of the present invention provides a kind of charger, including the electrical energy conversion circuit described in any of the above-described embodiment.
Another aspect, the embodiment of the present invention provides a kind of charging station, including the charger described at least one above-described embodiment.
Another further aspect, the embodiment of the present invention provides a kind of charging system for electric automobile, including background control center computer, also includes that at least one above-mentioned charging station, the charger in each charging station are connected with described background control center compunication.
Optionally, the charger in each charging station is communicated to connect by wired or wireless mode with described background control center computer.
Compared with prior art, beneficial effects of the present invention:
Present invention is generally directed to AC/DC, the different characteristics of two kinds of circuit of DC/DC, find out the weak point of current DC charging motor, propose the improvement project of topological circuit, propose a kind of 2 stage converter DC charging motor topological circuit with asymmetric feature, be characterized in that the circuit quantity of AC/DC circuit and DC/DC is different, and AC/DC circuit quantity is less than DC/DC circuit quantity, thus simplified system design, reduce system component number, improving product reliability and reduction product cost.
Accompanying drawing explanation
Fig. 1 is existing electrical energy conversion circuit block diagram；
Fig. 2 is another kind of existing electrical energy conversion circuit block diagram；
Fig. 3 is the electrical energy conversion circuit block diagram shown in the embodiment of the present invention；
Fig. 4 is another electrical energy conversion circuit block diagram shown in the embodiment of the present invention.
Detailed description of the invention
Below in conjunction with detailed description of the invention, the present invention is described in further detail.But this should not being interpreted as, the scope of the above-mentioned theme of the present invention is only limitted to below example, and all technology realized based on present invention belong to the scope of the present invention.
Present invention is generally directed to AC/DC, the different characteristics of two kinds of circuit of DC/DC, find out the weak point of current DC charging motor, propose the improvement project of topological circuit, propose a kind of 2 stage converter DC charging motor topological circuit with asymmetric feature, be characterized in that the circuit quantity of AC/DC circuit and DC/DC is different, and AC/DC circuit quantity is less than DC/DC circuit quantity, thus simplified system design, reduce system component number, improving product reliability and reduction product cost.Illustrate below in conjunction with the accompanying drawings.
As it is shown on figure 3, the present embodiment proposes the power conversion circuits in a kind of 2 stage converter DC charging motor with asymmetric feature.Fig. 3 show a kind of electrical energy conversion circuit that the embodiment of the present invention illustrates, and it is applied in the charger (such as DC charging motor) of charging electric vehicle, including an AC/DC module and the DC/DC module of N number of parallel connection.One AC/DC module, its AC connects alternating current power supply, for the alternating voltage that alternating current power supply inputs is converted to DC voltage and is exported by DC side.The DC/DC module of described N number of parallel connection, wherein, the input of all DC/DC modules is connected to the DC side of described AC/DC module together, the outfan of all DC/DC modules is together as charging output port (i.e. direct current output module in Fig. 3), in voltage after being modulated by the output of described charging output port after the DC voltage of described AC/DC module output is carried out the modulation of voltage and/or electric current and/or electric current to the power supply (such as battery) of electric automobile to be charged；Wherein N is the natural number more than or equal to 2.
Concrete, the value of described N is relevant to the output of described charger, and power is the biggest, and the value of N is the biggest, and power is the least, and the value of N is the least, and concrete value those skilled in the art of N can be arranged according to specific needs, is not restricted this.In order to improve circuit safety, optionally, described DC/DC module uses isolation DC/DC module.Described AC/DC module uses non-isolated design.
Comparing with current main product, in this circuit, AC/DC circuit (i.e. AC/DC module) quantity multiple is changed into one by original；Its advantage is the quantity that greatly reducing AC/DC device, improves the reliability of product, greatly reduces material cost simultaneously.Such as, the DC charging motor of a 100KW, current main product needs 10 wired in parallel, namely needs 10 AC/DC circuit to complete, and the totle drilling cost of 10 AC/DC circuit is 8000 yuan；After using the scheme that the present embodiment proposes, it is only necessary to 1 AC/DC circuit completes, and this circuit assembly is originally about 5000 yuan.Therefore, the program enormously simplify the design of product, reduces number of parts, improving product reliability；Reduce product cost (100KW system can reduce by 3000 yuan, accounts for about the 8% of totle drilling cost) simultaneously.
Certainly, owing to the power of Partial DC charger is very big, AC/DC circuit can also use the scheme of 2 or 2 more parallels to implement (but the quantity of DC/DC circuit is necessarily greater than the quantity of AC/DC circuit), the most also can reduce cost；Therefore, the embodiment of the present invention also provides for the power conversion circuits of another deformation.
As shown in Figure 4, the another kind of electrical energy conversion circuit illustrated for the embodiment of the present invention, it is applied in the charger (i.e. DC charging motor) of charging electric vehicle, including M AC/DC module in parallel and the DC/DC module of N number of parallel connection.In M AC/DC module in parallel, the AC of all AC/DC modules is connected to alternating current power supply together as input, the DC side of all AC/DC modules is together as outfan, for the alternating voltage that alternating current power supply inputs is converted to DC voltage and is exported by DC side.The DC/DC module of N number of parallel connection, wherein, the input of all DC/DC modules is connected to the outfan of described AC/DC module together, the outfan of all DC/DC modules is together as charging output port, in voltage after being modulated by the output of described charging output port after the DC voltage of described AC/DC module output is carried out the modulation of voltage and/or electric current and/or electric current to the power supply of electric automobile to be charged；Wherein N and M is the natural number more than or equal to 2, and M is less than N.
Concrete, the value of described M with N is relevant to the output of described charger, and power is the biggest, and the value of N and M is the biggest, and power is the least, and the value of N and M is the least.Concrete value those skilled in the art of M and N can be arranged according to specific needs, is not restricted this.Optionally, described DC/DC module uses isolation DC/DC module to improve circuit safety.
Present invention is generally directed to AC/DC, the different characteristics of two kinds of circuit of DC/DC, find out the weak point of current DC charging motor, propose the improvement project of topological circuit, propose a kind of 2 stage converter DC charging motor topological circuit with asymmetric feature, be characterized in that the circuit quantity of AC/DC circuit and DC/DC is different, and AC/DC circuit quantity is less than DC/DC circuit quantity, thus simplified system design, reduce system component number, improving product reliability and reduction product cost.
The embodiment of the present invention also provides for a kind of charger (not shown), including the electrical energy conversion circuit (seeing Fig. 3 or embodiment illustrated in fig. 4) described in alternating current power supply and any of the above-described embodiment.AC/DC module in electrical energy conversion circuit is connected with alternating current power supply, the alternating voltage that alternating current power supply inputs is converted to DC voltage and is exported by DC side, after the DC/DC module of N number of parallel connection carries out the modulation of voltage and/or electric current to the DC voltage that described AC/DC module exports, voltage after output modulation and/or electric current are in the power supply of electric automobile to be charged.
The present embodiment proposes a kind of 2 stage converter DC charging motor topological circuit with asymmetric feature, it is characterized in that the circuit quantity of AC/DC circuit and DC/DC is different, and AC/DC circuit quantity is less than DC/DC circuit quantity, thus simplified system design, minimizing system component number, improving product reliability and reduction product cost.It should be noted that described charger be existing mature technology such as charge control system/display screen/charge system etc., no longer describe in detail.
Another aspect, the embodiment of the present invention provides a kind of charging station (not shown), including the charger described at least one above-described embodiment.The content of described charger, with reference to the description in previous embodiment, the most no longer describes in detail.
The present embodiment proposes a kind of 2 stage converter DC charging motor topological circuit with asymmetric feature being used in charging station, it is characterized in that the circuit quantity of AC/DC circuit and DC/DC is different, and AC/DC circuit quantity is less than DC/DC circuit quantity, thus simplified system design, minimizing system component number, improving product reliability and reduction product cost.
Another further aspect, the embodiment of the present invention provides a kind of charging system for electric automobile (not shown), including background control center computer, also including at least one above-mentioned charging station (can be referring to previous embodiment content), the charger in each charging station is connected with described background control center compunication.Charger in each charging station is communicated to connect by wired or wireless mode (such as the communication such as communication cable or 3G/4G) with described background control center computer.The other guide not described in detail in the present embodiment all refers to existing mature technology, the most no longer describes in detail.
Present invention is generally directed to AC/DC, the different characteristics of two kinds of circuit of DC/DC, find out the weak point of current DC charging motor, propose the improvement project of topological circuit, propose a kind of 2 stage converter DC charging motor topological circuit with asymmetric feature, be characterized in that the circuit quantity of AC/DC circuit and DC/DC is different, and AC/DC circuit quantity is less than DC/DC circuit quantity, thus simplified system design, reduce system component number, improving product reliability and reduction product cost.
Above in conjunction with accompanying drawing, the detailed description of the invention of the present invention is described in detail, but the present invention is not restricted to above-mentioned embodiment, in the case of without departing from the spirit and scope of claims hereof, various modifications may be made or remodeling for those skilled in the art.
Claims (10)
1. an electrical energy conversion circuit, is applied in the charger of charging electric vehicle, it is characterised in that including:
One AC/DC module, its AC connects alternating current power supply, for the alternating voltage that alternating current power supply inputs is converted to DC voltage and is exported by DC side；And
The DC/DC module of N number of parallel connection, wherein, the input of all DC/DC modules is connected to the DC side of described AC/DC module together, the outfan of all DC/DC modules is together as charging output port, in voltage after being modulated by the output of described charging output port after the DC voltage of described AC/DC module output is carried out the modulation of voltage and/or electric current and/or electric current to the power supply of electric automobile to be charged；Wherein N is the natural number more than or equal to 2.
Electrical energy conversion circuit the most according to claim 1, it is characterised in that the value of described N is relevant to the output of described charger, and power is the biggest, and the value of N is the biggest, and power is the least, and the value of N is the least.
Electrical energy conversion circuit the most according to claim 1, it is characterised in that described DC/DC module uses isolation DC/DC module.
4. an electrical energy conversion circuit, is applied in the charger of charging electric vehicle, it is characterised in that including:
M AC/DC module in parallel, the AC of all AC/DC modules is connected to alternating current power supply together as input, the DC side of all AC/DC modules is together as outfan, for the alternating voltage that alternating current power supply inputs is converted to DC voltage and is exported by DC side；And
The DC/DC module of N number of parallel connection, wherein, the input of all DC/DC modules is connected to the outfan of described AC/DC module together, the outfan of all DC/DC modules is together as charging output port, in voltage after being modulated by the output of described charging output port after the DC voltage of described AC/DC module output is carried out the modulation of voltage and/or electric current and/or electric current to the power supply of electric automobile to be charged；Wherein N and M is the natural number more than or equal to 2, and M is less than N.
Electrical energy conversion circuit the most according to claim 4, it is characterised in that the value of described M with N is relevant to the output of described charger, and power is the biggest, and the value of N and M is the biggest, and power is the least, and the value of N and M is the least.
Electrical energy conversion circuit the most according to claim 4, it is characterised in that described DC/DC module uses isolation DC/DC module.
7. a charger, it is characterised in that include the electrical energy conversion circuit as described in any one of claim 1-6.
8. a charging station, it is characterised in that include at least one charger as claimed in claim 7.
9. a charging system for electric automobile, including background control center computer, it is characterised in that also include that at least one charging station as claimed in claim 8, the charger in each charging station are connected with described background control center compunication.
Charging system for electric automobile the most according to claim 9, it is characterised in that the charger in each charging station is communicated to connect by wired or wireless mode with described background control center computer.
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| CN110854973A (en) * | 2018-07-31 | 2020-02-28 | 保时捷股份公司 | Charging station of electric automobile |
| CN112117816A (en) * | 2020-09-21 | 2020-12-22 | 杭州微慕科技有限公司 | Charging switching device |
| CN113595173A (en) * | 2021-06-29 | 2021-11-02 | 摩拜(北京)信息技术有限公司 | Charging equipment, power configuration method and device thereof and electronic equipment |
| CN114337322A (en) * | 2022-01-04 | 2022-04-12 | 阳光氢能科技有限公司 | Hydrogen production power supply system |
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Application publication date: 20160928 |