CN107284259A - DC charging system and its charging method for low-voltage battery system - Google Patents
DC charging system and its charging method for low-voltage battery system Download PDFInfo
- Publication number
- CN107284259A CN107284259A CN201710455721.5A CN201710455721A CN107284259A CN 107284259 A CN107284259 A CN 107284259A CN 201710455721 A CN201710455721 A CN 201710455721A CN 107284259 A CN107284259 A CN 107284259A
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- voltage
- charging
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- battery
- translation circuits
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- 238000000034 method Methods 0.000 title claims abstract description 9
- 238000004891 communication Methods 0.000 claims description 15
- 230000005611 electricity Effects 0.000 claims description 7
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 230000007812 deficiency Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
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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
-
- 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
- B60L2210/12—Buck converters
-
- 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
- B60L2210/14—Boost converters
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses a kind of DC charging system and its charging method for low-voltage battery system, DC charging system includes charging pile interface, battery interface, main DC/DC translation circuits, auxiliary DC/DC translation circuits and main control module, and charging pile interface, battery interface, main DC/DC translation circuits, auxiliary DC/DC translation circuits are connected with main control module；It is shaken hands with direct-current charging post and battery system respectively by charge protocol, and forms virtual voltage to induce direct-current charging post to be charged by auxiliary DC/DC translation circuits.The present invention sets auxiliary DC/DC translation circuits to be increased to cell voltage with charging voltage to match, charging pile obtains elevated battery voltage signal, and charged by main DC/DC translation circuits to battery, and charging voltage can be reduced to and match with cell voltage by main DC/DC translation circuits, it is achieved thereby that carrying out DC charging to any low-voltage battery system.
Description
Technical field
The present invention relates to charging technique, more particularly, to a kind of DC charging system for low-voltage battery system and its
Charging method.
Background technology
At present, the mode to charging electric vehicle is mainly two kinds：Exchanging trickle charge and direct current charge, it passes through exchange respectively
Charging pile and direct-current charging post are realized.Wherein, direct-current charging post needed when being charged with battery system shaken hands so as to
In it is determined that whether cell voltage meets requirement with charging voltage, when the charging voltage of cell voltage and direct-current charging post is mismatched
When, direct-current charging post can not then be charged.Especially for the electric automobile of low-voltage battery system, its cell voltage does not exist
In most of national standard charging pile output area, it is impossible to carry out DC charging.In view of this, devise a set of suitable for low-voltage system
The DC charging system of system, realizes that low voltage battery system and national standard charging pile are attached using voltage transformation, communication alternative, enters
Row direct current quick charge.
The content of the invention
It is an object of the invention to overcome above-mentioned technical deficiency, a kind of DC charging for low-voltage battery system is proposed
System and its charging method, solving Vehicular charger in the prior art can not charge when cell voltage is mismatched with charging voltage
Technical problem.
To reach above-mentioned technical purpose, technical scheme provides a kind of direct current for low-voltage battery system and filled
Electric system, including charging pile interface, battery interface, main DC/DC translation circuits, auxiliary DC/DC translation circuits and main control module, it is described
The input of main DC/DC translation circuits is connected with the charging pile interface, output end is connected with the battery interface, described auxiliary
The input of DC/DC translation circuits is connected with the battery interface, output end is connected with the charging pile interface, the charging pile
Interface, battery interface, main DC/DC translation circuits, auxiliary DC/DC translation circuits are connected with the main control module.
It is preferred that, the charging pile interface includes charging pile power interface, charging pile connection and confirms that interface and charging pile are logical
Communication interface, the battery interface includes power of battery interface and pond communication interface, the input of the main DC/DC translation circuits
Be connected with the output end of auxiliary DC/DC translation circuits with charging pile power interface, the output end of the main DC/DC translation circuits and
The input of auxiliary DC/DC translation circuits is connected with power of battery interface, and the charging pile communication interface, charging pile connection confirm
Interface and battery communication interface are connected with the main control module.
It is preferred that the main DC/DC translation circuits be direct-current voltage reducing circuit, the auxiliary DC/DC translation circuits be DC boosting
Circuit.
Meanwhile, the present invention also provides a kind of DC charging method of low-voltage battery system, comprises the following steps：
(1) shaken hands respectively with battery system and direct-current charging post by charge protocol, and obtain first respectively and shaken hands
Voltage and second is shaken hands voltage；
(2) cell voltage of battery system is improved and shaken hands the virtual voltage that voltage matches with second with being formed, and will
Virtual voltage is sent to direct-current charging post；
(3) direct-current charging post obtains virtual voltage and turned on battery system；
(4) charging voltage of reduction direct-current charging post and formed with first shake hands that voltage matches be filled with voltage.
It is preferred that, the step (3) also includes stopping continuing to produce virtual voltage.
Compared with prior art, the present invention sets an auxiliary DC/DC translation circuits to be increased to cell voltage and charging voltage
Match, in order to which charging pile obtains the elevated battery voltage signal so that charging pile can pass through main DC/DC translation circuits
Charged to battery, and charging voltage can be reduced to and match with cell voltage by main DC/DC translation circuits, it is achieved thereby that to appointing
Low-voltage battery system of anticipating carries out DC charging.
Brief description of the drawings
Fig. 1 is the connection block diagram of the DC charging system for low-voltage battery system of the present invention.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
As shown in figure 1, The embodiment provides a kind of DC charging system for low-voltage battery system
100, including charging pile interface 11, battery interface 12, main DC/DC translation circuits 13, auxiliary DC/DC translation circuits 14 and main control module
15, the inputs of the main DC/DC translation circuits 13 is connected with the charging pile interface 11, output end and the battery interface 12
Connection, the inputs of the auxiliary DC/DC translation circuits 14 is connected with the battery interface 12, output end and the charging pile interface
11 connections, the charging pile interface 11, battery interface 12, main DC/DC translation circuits 13, auxiliary DC/DC translation circuits 14 are and institute
Main control module 15 is stated to connect.
When the present embodiment specifically charges, charging pile interface 11 can be connected with direct-current charging post 200, battery interface 12 and battery
System 300 is connected, and DC auxiliary supply is then given DC charging system 100 and supported with electric energy, while DC charging system 100 can
The BMS system power supplies of battery system 300 are given, its power supply mode is existing usual manner；Main control module 15 fills with direct current
After electric stake 200 is connected, it can be detected to charging pile interface 11, and shaken hands with direct-current charging post 200, pressure-resistant inspection of insulating
Survey, basis signal detection etc., while main control module 15 is detected to the cell voltage of battery system, and are carried out with BMS systems
Shake hands, main control module 15 carries out above-mentioned processing and handled by the charge protocol in existing national standard charge protocol, therefore this reality
Apply example it is not described in detail, it is necessary to illustrate be the present embodiment main control module 15 can respectively with direct-current charging post 200 and electricity
The BMS systems of cell system 300 are shaken hands, and determine corresponding voltage of shaking hands.Moreover, the present embodiment low-voltage battery system master
Refer to that voltage is less than 300V battery system.
Specifically, main control module 15 is held with battery system 300 and direct-current charging post 200 respectively by charge protocol
Hand, and obtain the first voltage and second of shaking hands respectively and shake hands voltage, first shake hands voltage and second shake hands voltage it is general respectively with
Cell voltage is roughly the same with charging voltage；When obtain first shake hands voltage and second shake hands voltage after, main control module 15 is controlled
Auxiliary DC/DC translation circuits 14 are opened, and it can improve the cell voltage of battery system 300 is shaken hands voltage phase be formed with second
The virtual voltage matched somebody with somebody, and virtual voltage is sent to direct-current charging post, because the virtual voltage matches with the second voltage of shaking hands,
It meets the requirement of shaking hands between main control module 15 and direct-current charging post 200, therefore direct-current charging post 200 is after virtual voltage is obtained
Control is turned on battery system 300, corresponding, and main control module 15 controls main DC/DC translation circuits 13 to work to fill to reduce direct current
The charging voltage of electric stake 200, and the charging voltage after reducing can be formed one and first shake hands that voltage matches be filled with voltage, make
Must this be filled with voltage and can smoothly be filled with battery system 300.For convenience of description, the present embodiment is with the charging of direct-current charging post 200
Voltage is that 300V, the cell voltage of battery system 300 are that 100V is illustrated, and main control module 15, which can pass through, to be detected and obtain 300V's
The cell voltage of charging voltage and 100V, the BMS systems of itself and direct-current charging post 200 and battery system 300 pass through charge protocol
First determined voltage of shaking hands is that 100V, the second voltage of shaking hands are 300V, due to main control module 15 and direct-current charging post 200 and
The voltage of shaking hands of BMS systems determination is different, therefore the present embodiment sets auxiliary DC/DC translation circuits 14 to change 100V cell voltage
For 300V virtual voltage, and the voltage signal of the virtual voltage of the 300V after conversion is delivered to direct-current charging post 200, due to
The voltage signal for 300V that direct-current charging post 200 is obtained, what the voltage signal was shaken hands with it second shakes hands voltage signal phase
Match somebody with somebody, therefore the control of direct-current charging post 200 closes its output relay, to provide power power-supply to battery system, the power power-supply can
Battery system is charged by main DC/DC translation circuits 13, and main DC/DC translation circuits 13 can be by 300V charging voltage
Be reduced to 100V is filled with voltage, in order to match with the first voltage of shaking hands, so as to ensure smoothly filling for battery system 300
Electricity.
Wherein, charging pile interface 11 described in the present embodiment include charging pile power interface, charging pile connection confirm interface and
Charging pile communication interface, the battery interface 12 includes power of battery interface and battery communication interface, the main DC/DC conversion electricity
The output end of the input on road 13 and auxiliary DC/DC translation circuits 14 is connected with charging pile power interface, the main DC/DC conversion
The input of the output end of circuit 13 and auxiliary DC/DC translation circuits 14 is connected with power of battery interface, the charging pile communication
Interface, charging pile connection confirm that interface and battery communication interface are connected with the main control module 15.During specific setting, this implementation
Example charging pile power interface, charging pile connection confirm interface, charging pile communication interface, power of battery interface and battery communication interface
Implement by present GB T 20234.3-2015 national standards.Wherein, each connection contact of charging pile interface 11 is as shown in table 1, battery
Each connection contact of interface 12 is as shown in table 2：
Table 1
Table 2
Main DC/DC translation circuits 13 described in the present embodiment are direct-current voltage reducing circuit, and the auxiliary DC/DC translation circuits 14 are straight
Flow booster circuit.Wherein, the main DC/DC translation circuits 13 of the present embodiment are preferred to use the phase-shifting full-bridge of isolation, and auxiliary DC/DC is converted
Circuit 14 is then preferred to use BOOST circuits.
Compared with prior art, the present invention sets an auxiliary DC/DC translation circuits 14 to be increased to cell voltage and the electricity that charges
Pressure matches, in order to which charging pile obtains the elevated battery voltage signal so that charging pile can convert electricity by main DC/DC
Road 13 is charged to battery, and charging voltage can be reduced to and match with cell voltage by main DC/DC translation circuits 13, so as to realize
DC charging is carried out to any low-voltage battery system.
The embodiment of present invention described above, is not intended to limit the scope of the present invention..Any basis
Various other corresponding changes and deformation that the technical concept of the present invention is made, should be included in the guarantor of the claims in the present invention
In the range of shield.
Claims (5)
1. a kind of DC charging system for low-voltage battery system, it is characterised in that connect including charging pile interface, battery
Mouth, main DC/DC translation circuits, auxiliary DC/DC translation circuits and main control module, the input of the main DC/DC translation circuits and institute
State the connection of charging pile interface, output end to be connected with the battery interface, input and the electricity of the auxiliary DC/DC translation circuits
Pond interface connection, output end are connected with the charging pile interface, the charging pile interface, battery interface, main DC/DC conversion electricity
Road, auxiliary DC/DC translation circuits are connected with the main control module.
2. the DC charging system according to claim 1 for low-voltage battery system, it is characterised in that the charging
Staking mouthful includes charging pile power interface, charging pile connection and confirms interface and charging pile communication interface, and the battery interface includes
Power of battery interface, battery communication interface, the output of the input and auxiliary DC/DC translation circuits of the main DC/DC translation circuits
End is connected with charging pile power interface, the output end of the main DC/DC translation circuits and the input of auxiliary DC/DC translation circuits
Be connected with power of battery interface, the charging pile communication interface, charging pile connection confirm interface and battery communication interface with
The main control module connection.
3. the DC charging system according to claim 2 for low-voltage battery system, it is characterised in that the master
DC/DC translation circuits are direct-current voltage reducing circuit, and the auxiliary DC/DC translation circuits are DC voltage booster circuit.
4. a kind of DC charging method of low-voltage battery system, it is characterised in that comprise the following steps：
(1) shaken hands respectively with battery system and direct-current charging post by charge protocol, and obtain first respectively and shaken hands voltage
Shaken hands voltage with second；
(2) cell voltage of battery system is improved and shaken hands the virtual voltage that voltage matches with second with being formed, and will be virtual
Voltage is sent to direct-current charging post；
(3) direct-current charging post obtains virtual voltage and turned on battery system；
(4) charging voltage of reduction direct-current charging post and formed with first shake hands that voltage matches be filled with voltage.
5. the DC charging method of low-voltage battery system according to claim 4, it is characterised in that the step (3)
Also include stopping continuing to produce virtual voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710455721.5A CN107284259B (en) | 2017-06-16 | 2017-06-16 | DC charging system for low voltage battery system and charging method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710455721.5A CN107284259B (en) | 2017-06-16 | 2017-06-16 | DC charging system for low voltage battery system and charging method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107284259A true CN107284259A (en) | 2017-10-24 |
| CN107284259B CN107284259B (en) | 2020-05-08 |
Family
ID=60096682
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710455721.5A Expired - Fee Related CN107284259B (en) | 2017-06-16 | 2017-06-16 | DC charging system for low voltage battery system and charging method thereof |
Country Status (1)
| Country | Link |
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| CN (1) | CN107284259B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109624743A (en) * | 2019-01-18 | 2019-04-16 | 上海蔚来汽车有限公司 | Charging commutator and charging system |
| CN109866651A (en) * | 2019-03-08 | 2019-06-11 | 北京东方阳泰新能源科技有限公司 | Battery pack charging device and its operation method |
| CN109941125A (en) * | 2019-03-08 | 2019-06-28 | 北京东方阳泰新能源科技有限公司 | Battery charger and its operation method |
| CN113910956A (en) * | 2021-08-27 | 2022-01-11 | 岚图汽车科技有限公司 | Electric vehicle and vehicle-mounted charger, charging system and charging method thereof |
| CN114851874A (en) * | 2021-02-04 | 2022-08-05 | 快充公司 | Charging conversion device based on charging pile and charging system |
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| CN102064702A (en) * | 2010-12-31 | 2011-05-18 | 刘闯 | Bidirectionally isolating type series resonance DC/DC converter |
| EP2800226A1 (en) * | 2011-12-31 | 2014-11-05 | Shenzhen BYD Auto R&D Company Limited | Electric vehicle and power system and motor controller for electric vehicle |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109624743A (en) * | 2019-01-18 | 2019-04-16 | 上海蔚来汽车有限公司 | Charging commutator and charging system |
| CN109866651A (en) * | 2019-03-08 | 2019-06-11 | 北京东方阳泰新能源科技有限公司 | Battery pack charging device and its operation method |
| CN109941125A (en) * | 2019-03-08 | 2019-06-28 | 北京东方阳泰新能源科技有限公司 | Battery charger and its operation method |
| CN114851874A (en) * | 2021-02-04 | 2022-08-05 | 快充公司 | Charging conversion device based on charging pile and charging system |
| CN113910956A (en) * | 2021-08-27 | 2022-01-11 | 岚图汽车科技有限公司 | Electric vehicle and vehicle-mounted charger, charging system and charging method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107284259B (en) | 2020-05-08 |
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