CN202616818U - Direct current charging system for electric automobile - Google Patents
Direct current charging system for electric automobile Download PDFInfo
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- CN202616818U CN202616818U CN 201220182543 CN201220182543U CN202616818U CN 202616818 U CN202616818 U CN 202616818U CN 201220182543 CN201220182543 CN 201220182543 CN 201220182543 U CN201220182543 U CN 201220182543U CN 202616818 U CN202616818 U CN 202616818U
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Abstract
The utility model relates to a direct current charging system for an electric automobile, comprising man-machine interaction equipment, a charging system control module, and a high-power direct current charger; wherein, the high-power direct current charger consists of a plurality of charging modules which are connected in parallel, and is used for providing a direct current and/or direct voltage for charging to the electric automobile; the charging system control module is respectively connected with the man-machine interaction equipment and a control circuit of the each charging module in the high-power direct current charger; an output end of the high-power direct current charger is connected with a charging interface of the electric automobile; and the man-machine interaction equipment is used for displaying charging information and setting charging parameters. By controlling an operating state of the each charging module through the charging system control module, the direct current charging system of the utility model ensures that the current and/or voltage required for charging the electric automobile is provided by the fewest charging module all the time, thereby avoiding light-load operation of the charging module, reducing loss of the charging system for the electric automobile, and reducing harmonic pollution to a power grid.
Description
Technical field
The utility model relates to the charging electric vehicle technical field, relates in particular to a kind of novel electric vehicle DC charging system.
Background technology
Under the support energetically and promotion of country, electric vehicle engineering is day by day ripe, and the commercialization of existing part vehicle.When the black ice of technology and price progressively melts, one of factor that turns serious restriction electric vehicle industrialization into of supporting electrically-charging equipment.Charging system is that the electric automobile operation provides energy supply, is that the important foundation of electric automobile supports, and also is the important step in electric automobile commercialization, the industrialization process, and the quality of its quality is directly connected to the popularization of electric automobile.
For the electric automobile that goes at a distance; The electric automobile DC charging system provides quick charge essential; DC charging system is generally high-power charging system, composed in parallel by a plurality of charging modules, and batteries of electric automobile capacity, acceptable maximum charging current and maximum charging voltage is different; In order to make charger can be the charging batteries of electric automobile of different parameters, the capacity of dc charging motor generally all requires to dispose according to maximum.This high power DC charger is if give the less charging electric vehicle of battery capacity or carry out normal charge (charging at a slow speed); Can cause each charging module major part of high power DC charger even all be in the underloading operating state full time; And underloading when work, charging module inefficiency, wave distortion are serious, bigger to electric network pollution.
The utility model content
The utility model purpose is to provide a kind of electric automobile DC charging system, solves problems such as there is frequent light running in present high power DC charger, energy consumption is big, harmonic pollution is serious, the equal inefficiency of each charging module.
The purpose of the utility model can realize through following technical scheme:
A kind of electric automobile DC charging system; Comprise human-computer interaction device, charging system control module, high power DC charger; Wherein the high power DC charger is formed in parallel by a plurality of charging modules, and the direct current and/or the direct voltage of charging is provided for electric automobile; Said charging system control module is connected with the control circuit of each charging module in human-computer interaction device, the high power DC charger respectively; The output of said high power DC charger is connected with the charging electric vehicle interface; Said human-computer interaction device is used to show charge information and charge parameter is set; Said charging system control module is used to control the operating state of each charging module, and guaranteeing provides required electric current of charging electric vehicle and/or voltage with minimum charging module all the time.
In the above-mentioned electric automobile DC charging system, said each charging module has identical structure, all comprises control circuit, main power circuit, temperature sensing circuit, timing circuit, charging module numbering prewired circuit, memory device separately; The control circuit of said charging module is connected with its main power circuit, temperature sensing circuit, timing circuit, charging module numbering prewired circuit, memory device respectively; The temperature sensing circuit of said charging module is used for the charging module temperature is detected and sends to the charging system control module through control circuit; Said timing circuit is used for charging module stream time and net cycle time are carried out record, sends to the charging system control module through control circuit, simultaneously storage in memory device; Said charging module numbering prewired circuit is numbered charging module.
Above-mentioned electric automobile DC charging system also comprises digital electric meter, and the output of high power DC charger is connected with the charging electric vehicle interface through digital electric meter, and digital electric meter also is connected with the charging system control module; Digital electric meter is used to calculate charge capacity, and in real time electric quantity data is offered charging system control module calculating charging expense.
Above-mentioned charge parameter comprises more than one in charge mode, charging interval, charge capacity, charging expense, charging current, the charging voltage.
Above-mentioned charging system control module also is connected with the battery management system BMS of electric automobile.
The maximum output current of each charging module is identical with maximum output voltage in the above-mentioned high power DC charger.
The main power circuit of above-mentioned charging module comprises three phase rectifier filter circuit, high-frequency inverter circuit, the output rectifier and filter that connects in order; The three phase rectifier filter circuit is connected with three-phase alternating-current supply, and output rectifier and filter is connected with the charging electric vehicle interface.
As preferably, above-mentioned human-computer interaction device is a touch-screen, and demonstration and input equipment as man-machine interface provide the setting of charge parameter, and the function that shows of charging relevant information.
The master control module that above-mentioned said charging system control module is the electric automobile DC charging system realizes control and management to whole electric automobile DC charging system each several part.
As preferably, the charging system control module can adopt arm processor.
The control method of above-mentioned electric automobile DC charging system is following:
Said charging system control module is according to the charging current of electric automobile needs and/or the operating state of each charging module of charging voltage control; Guaranteeing provides required electric current of charging electric vehicle and/or voltage with minimum charging module all the time, and electric automobile DC charging system loss harmonic exists less relatively;
The control sequence of said each charging module operating state is by the idle priority decision of charging module; The idle priority of said charging module is arranged according to each charging module temperature, stream time, net cycle time; High more its idle priority of temperature is low more; Temperature is identical and long more its idle priority of stream time is low more; Long more its idle priority of net cycle time is low more under the above two identical situation; Vice versa, if temperature, stream time, the net cycle time of several charging modules are all identical, the idle priority of the charging module that then numbering is more little is high more.
Compared with prior art, the utlity model has following advantage and technique effect:
Efficient when 1, having improved charging module work;
Electric energy loss when 2, having reduced charging electric vehicle;
3, avoided the wave distortion when light running of charging electric vehicle module serious, bigger to harmonic pollution in electric power net.
Description of drawings
Fig. 1 is the electric automobile DC charging system structural representation of execution mode.
Fig. 2 is the electric automobile DC charging system charging module block diagram of execution mode.
Fig. 3 is the electric automobile DC charging system charging module control flow chart of execution mode.
Embodiment
Below in conjunction with specific embodiment the utility model is further specified.
Fig. 1 is the electric automobile DC charging system structural representation of execution mode; The electric automobile DC charging system comprises human-computer interaction device, charging system control module, high power DC charger; Wherein the high power DC charger is formed in parallel by n charging module, and n ≧ 2 are such as n=5,8,10 etc.; Not as restriction, the direct current and/or the direct voltage of charging is provided for electric automobile to the utility model; As shown in Figure 2, said each charging module has identical structure, all comprises control circuit, main power circuit, temperature sensing circuit, timing circuit, charging module numbering prewired circuit, memory device separately; The control circuit of said charging module is connected with its main power circuit, temperature sensing circuit, timing circuit, charging module numbering prewired circuit, memory device respectively; Said charging system control module is connected with the control circuit of each charging module in human-computer interaction device, the high power DC charger respectively; The output of said high power DC charger is connected with the charging electric vehicle interface; Said human-computer interaction device is used to show charge information and charge parameter is set; The charging system control module also is connected with the battery management system BMS of electric automobile, is used to control the operating state of each charging module, and guaranteeing provides required electric current of charging electric vehicle and/or voltage with minimum charging module all the time.The charging system control module is the master control module of electric automobile DC charging system, realizes control and management to whole electric automobile DC charging system each several part.
Like Fig. 1, the electric automobile DC charging system also comprises digital electric meter, and the output of high power DC charger is connected with the charging electric vehicle interface through digital electric meter, and digital electric meter also is connected with the charging system control module; Digital electric meter is used to calculate charge capacity, and in real time electric quantity data is offered charging system control module calculating charging expense; Charge parameter comprises: charge mode, charging interval, charge capacity, charging expense, charging current, charging voltage.
The maximum output current of each charging module is identical with maximum output voltage in the above-mentioned high power DC charger; For electric automobile provides direct current and/or direct voltage; Maximum output current is such as but not limited to 50A; Maximum output voltage is such as but not limited to 500V, and the big I of the output current of each charging module, output voltage designs according to actual needs.
The main power circuit of above-mentioned charging module comprises three phase rectifier filter circuit, high-frequency inverter circuit, the output rectifier and filter that connects in order; The three phase rectifier filter circuit is connected with three-phase alternating-current supply, and output rectifier and filter is connected with the charging electric vehicle interface; The temperature sensing circuit of said charging module is used for the charging module temperature is detected and sends to the charging system control module through control circuit; Said timing circuit is used for charging module stream time and net cycle time are carried out record, sends to the charging system control module through control circuit, simultaneously storage in memory device; Said charging module numbering prewired circuit is numbered charging module.
The human-computer interaction device is a touch-screen in this instance, and demonstration and input equipment as man-machine interface provide the setting of charge parameter, and the function of charging relevant information demonstration.The charging system control module adopts arm processor, also can adopt dsp processor, charging process is carried out information gathering calculate and plan as a whole the whole large power, electrically electrical automobile DC charging system of control.
The control method of above-mentioned electric automobile DC charging system is following:
Said charging system control module is according to the charging current of electric automobile needs and/or the operating state of each charging module of charging voltage control; Guaranteeing provides required electric current of charging electric vehicle and/or voltage with minimum charging module all the time, and electric automobile DC charging system loss harmonic exists less relatively;
The control sequence of said each charging module operating state is by the idle priority decision of charging module; The idle priority of said charging module is arranged according to each charging module temperature, stream time, net cycle time; High more its idle priority of temperature is low more; Temperature is identical and long more its idle priority of stream time is low more; Long more its idle priority of net cycle time is low more under the above two identical situation; Vice versa, if temperature, stream time, the net cycle time of several charging modules are all identical, the idle priority of the charging module that then numbering is more little is high more;
When having the charging module failover to deactivate in the charging process, the highest charging module work of idle priority in the charging system control module control idle condition (work); If do not have idle charging module then to turn charging current automatically down, but continue as charging electric vehicle by the charging module of all the other operate as normal.
Fig. 3 is the electric automobile DC charging system charging module control flow chart of execution mode.The electric automobile DC charging system was communicated by letter with cell management system of electric automobile BMS through the CAN bus in the charging preparatory stage; At first discern the batteries of electric automobile parameter that connects; And with electric automobile DC charging system maximum output current relatively: (1) if when electric automobile DC charging system maximum output current is less than or equal to the maximum acceptable charging current of electric automobile, all work of all charging modules of electric automobile DC charging system (n).(2) if electric automobile DC charging system maximum output current during greater than the maximum acceptable charging current of electric automobile; Electric automobile DC charging system control module judges that further the required actual charging module number of charging electric vehicle (is made as m here; M≤n), and select m the highest charging module work of idle priority.
In charging process, according to the charging module number of charging current adjustment operation, guarantee provides required charging current of charging electric vehicle and/or voltage with minimum charging module to the charging system control module all the time in real time.The control sequence of controlling the operating state of each charging module is determined by the idle priority of charging module.
For example, the high power DC charger comprises the charging module of 8 parallel connections, and the maximum output current of each charging module is that 50A, maximum output voltage are 500V, and then high power DC charger maximum output current is that 400A, maximum output voltage are 500V.If it is 310A that the electric automobile maximum can be accepted charging current; The highest charging voltage of accepting is 450V; 7 the highest charging modules of idle priority provide the charging current of 310A in 8 charging modules of charging system control module selection; When charging current when 310A is decreased to 300A, the minimum charging module of idle priority quits work in 7 charging modules.Similarly, be a unit with 50A, be reduced to successively and have only a charging module job to accomplish to charging.
Again for example; If it is 700A that the electric automobile maximum can be accepted charging current; The highest charging voltage of accepting is 500V; The charging system control module selects 8 charging modules fully loaded to charging electric vehicle, and when charging current drops to 350A when following, the minimum charging module of idle priority is deactivated in 8 charging modules.Similarly, be a unit with 50A, be reduced to successively and have only a charging module job to accomplish to charging.
The electric automobile DC charging system that the utility model provided has been avoided the light running of charging module, has reduced the loss of electric automobile DC charging system and to the harmonic pollution of electrical network, the operating efficiency when having improved the charging module operation.
Specific embodiment described herein only is specifying the utility model spirit; Those skilled in the art can make various modifications to this specific embodiment or replenish or adopt similar mode to substitute under the prerequisite of the principle of the utility model and essence, but these change the protection range that all falls into the utility model.Therefore the utility model technical scope is not limited to the foregoing description.
Claims (5)
1. electric automobile DC charging system; It is characterized in that comprising human-computer interaction device, charging system control module, high power DC charger; Wherein the high power DC charger is formed in parallel by a plurality of charging modules, is used to direct current and/or direct voltage that electric automobile provides charging; Said charging system control module is connected with the control circuit of each charging module in human-computer interaction device, the high power DC charger respectively; The output of said high power DC charger is connected with the charging electric vehicle interface; Said human-computer interaction device is used to show charge information and charge parameter is set; Said charging system control module is used to control the operating state of each charging module, and guaranteeing provides required electric current of charging electric vehicle and/or voltage with minimum charging module all the time.
2. electric automobile DC charging system according to claim 1; It is characterized in that said each charging module has identical structure, all comprise control circuit, main power circuit, temperature sensing circuit, timing circuit, charging module numbering prewired circuit, memory device separately; The control circuit of said charging module is connected with its main power circuit, temperature sensing circuit, timing circuit, charging module numbering prewired circuit, memory device respectively; The temperature sensing circuit of said charging module is used for the charging module temperature is detected and sends to the charging system control module through control circuit; Said timing circuit is used for charging module stream time and net cycle time are carried out record, sends to the charging system control module through control circuit, simultaneously storage in memory device; Said charging module numbering prewired circuit is numbered charging module.
3. electric automobile DC charging system according to claim 2 is characterized in that said charging system control module also is connected with the battery management system BMS of electric automobile.
4. electric automobile DC charging system according to claim 2; The main power circuit that it is characterized in that said charging module comprises three phase rectifier filter circuit, high-frequency inverter circuit, the output rectifier and filter that connects in order; The three phase rectifier filter circuit is connected with three-phase alternating-current supply, and output rectifier and filter is connected with the charging electric vehicle interface.
5. according to each described electric automobile DC charging system of claim 1 ~ 5; It is characterized in that also comprising digital electric meter; The output of high power DC charger is connected with the charging electric vehicle interface through digital electric meter, and digital electric meter also is connected with the charging system control module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220182543 CN202616818U (en) | 2012-04-26 | 2012-04-26 | Direct current charging system for electric automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220182543 CN202616818U (en) | 2012-04-26 | 2012-04-26 | Direct current charging system for electric automobile |
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| CN202616818U true CN202616818U (en) | 2012-12-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220182543 Expired - Lifetime CN202616818U (en) | 2012-04-26 | 2012-04-26 | Direct current charging system for electric automobile |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102664447A (en) * | 2012-04-26 | 2012-09-12 | 华南理工大学 | Direct current (DC) charging system of electric automobile and control method thereof |
| CN103746418A (en) * | 2013-12-26 | 2014-04-23 | 国家电网公司 | Electric automobile AC-DC-combined charging control system |
| CN105656120A (en) * | 2016-01-29 | 2016-06-08 | 山东鲁能智能技术有限公司 | Monitoring method for intelligent load distribution of dual-channel charger |
-
2012
- 2012-04-26 CN CN 201220182543 patent/CN202616818U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102664447A (en) * | 2012-04-26 | 2012-09-12 | 华南理工大学 | Direct current (DC) charging system of electric automobile and control method thereof |
| CN103746418A (en) * | 2013-12-26 | 2014-04-23 | 国家电网公司 | Electric automobile AC-DC-combined charging control system |
| CN105656120A (en) * | 2016-01-29 | 2016-06-08 | 山东鲁能智能技术有限公司 | Monitoring method for intelligent load distribution of dual-channel charger |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121219 |
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| CX01 | Expiry of patent term |