CN104967154B - A kind of charging system for electric automobile - Google Patents
A kind of charging system for electric automobile Download PDFInfo
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- CN104967154B CN104967154B CN201410462447.0A CN201410462447A CN104967154B CN 104967154 B CN104967154 B CN 104967154B CN 201410462447 A CN201410462447 A CN 201410462447A CN 104967154 B CN104967154 B CN 104967154B
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Abstract
The invention discloses a kind of charging system for electric automobile, there is multichannel charging output interface, including charhing unit and at least one switch unit for being connected with the output port of the charhing unit, wherein：Each switch unit includes one or more switch elements, and each switch element includes first semiconductor switch or sequentially connected second semiconductor switch and the 3rd semiconductor switch, each switch element is used to be switched on or off exporting to switch the electric energy between the charhing unit and multichannel charging output interface according to the charged state for the electric automobile for being connected to the switch element.The beneficial effects of the practice of the present invention is, in the switch unit that cathode and/or cathode output end the mouth installation one of each power module is made of semiconductor switch, on or off by controlling semiconductor switch can be exported with the electric energy between flexible allocation power module and multichannel charging output interface, and system cost is low, occupy little space.
Description
Technical field
The present invention relates to electric vehicle engineering field, more specifically to a kind of with multichannel charging output interface
Charging system for electric automobile.
Background technology
As requirement of the development and people of society to environmental protection is higher and higher, the prospect of electric automobile is seen extensively
It is good.The quantity of electric automobile charging station is also more and more, in order to economize the land resource and construction cost, Carrier Requirements charging pile
Possesses the function of " machine fills more ", i.e. charging pile possesses multiple charging output interfaces, can meet while charge to more cars
Function.
The scheme that existing charging system uses at present is to switch each power module in charging system using contactor
Electric energy output between multichannel charging output interface.But the volume of contactor particularly D.C. contactor is extremely huge, cost
Abnormal expensive, when action, can send larger noise, and when cut off electric current, stops mechanical contact and pull open space, have substantially
Electric arc, the electric arc of generation not only can ablation contact, influence its service life, can also bring security risk.
The content of the invention
The technical problem to be solved in the present invention is, for the drawbacks described above of the prior art, there is provided a kind of electric automobile fills
Electric system.
The technical solution adopted by the present invention to solve the technical problems is：A kind of charging system for electric automobile is constructed, is had
Multichannel charges output interface, including charhing unit and at least one switching list for being connected with the output port of the charhing unit
Member, wherein：Each switch unit includes one or more switch elements, and each switch element is opened including first semiconductor
Close or sequentially connected second semiconductor switch and the 3rd semiconductor switch, each switch element are used for foundation and are connected to the switch
The charged state of the electric automobile of unit be switched on or off with switch the charhing unit and the multichannel charging output interface it
Between electric energy output.
In above-mentioned charging system for electric automobile, the charhing unit includes at least one power module, each power supply mould
The connection corresponding with each switch unit respectively of the cathode output end mouth of block, the cathode output end mouth difference of each power module
The multichannel charging output interface being respectively used to electric automobile charging is formed with the cathode output end mouth of each switch element.
In above-mentioned charging system for electric automobile, the charhing unit includes at least one power module, each electricity
The connection corresponding with each switch unit respectively of the cathode output end mouth of source module, the cathode output end mouth of each power module
Formed to be respectively used to charge to the multichannel of electric automobile charging with the cathode output end mouth of each switch element respectively and exported
Interface.
In above-mentioned charging system for electric automobile, the charhing unit includes at least one power module, each electricity
The cathode and anode of source module connect a switch unit, cathode output end mouth and its cathode output end of each switch element respectively
Mouth, which is formed, is used for the multichannel charging output interface to electric automobile charging respectively.
In above-mentioned charging system for electric automobile, first semiconductor switch for it is following any one：It is thyristor, controllable
Silicon, insulated gate bipolar transistor, triode.
In above-mentioned charging system for electric automobile, second semiconductor switch and the 3rd semiconductor switch are field
Effect pipe, wherein：The drain electrode of second semiconductor switch is connected with the output port of the charhing unit, and described the second half lead
The source electrode of body switch is connected with the source electrode of the 3rd semiconductor switch, and the drain output mouth of the 3rd semiconductor switch is
The output port of corresponding switch element.
In above-mentioned charging system for electric automobile, second semiconductor switch for it is following any one：It is thyristor, controllable
Silicon, insulated gate bipolar transistor, triode；3rd semiconductor switch for it is following any one：Thyristor, it is silicon-controlled,
Insulated gate bipolar transistor, triode, diode.
In above-mentioned charging system for electric automobile, second semiconductor switch for it is following any one：It is thyristor, controllable
Silicon, insulated gate bipolar transistor, triode, diode；3rd semiconductor switch for it is following any one：Thyristor,
Silicon-controlled, insulated gate bipolar transistor, triode.
In above-mentioned charging system for electric automobile, each power module is respectively to be used to be converted to AC power directly
The A.C.-D.C. converter in galvanic electricity source.
In above-mentioned charging system for electric automobile, the charging system for electric automobile further includes to be opened with each semiconductor respectively
The control terminal connection of pass, and for being controlled according to the charged state for the electric automobile for connecting each switch element in the switch element
The controller of the on or off of semiconductor switch, and can only at most there is a switch element to be in each switch unit
State.
Implement the charging system for electric automobile of the present invention, have the advantages that：In each power module outlet mouth
Cathode and/or anode one switch unit is installed, switch unit unit include it is one or more respectively with power module outlet
The switch element of mouth connection, especially, each switch element is formed by semiconductor switch, by controlling leading for semiconductor switch
Logical or shut-off exports to distribute the electric energy between power module and multichannel charging output interface, and in normal work, electronic vapour
Between in-car battery will not direct short circuit, therefore the charging system can realize the function of " machine fills more ".
In addition, the present invention includes first semiconductor switch or sequentially connected second by using each switch element
Semiconductor switch and the 3rd semiconductor switch scheme, have the following advantages：
1) cost is low, and for relatively existing contactor scheme, cost needed for the present invention is low, because of the price of semiconductor switch
Only 1/10th of contactor price；
2) occupy little space, the present invention is using the space shared by semiconductor switch less than existing using contactor scheme
1/5th, and semiconductor switch can also be installed on conducting copper bus, allowed conducting copper bus auxiliary heat dissipation, further reduced body
Product.The small size of switching tube, allows a large amount of modules to be integrated on a charging system；
3) output of electric energy can flexibly be distributed.The actuation time of contactor is usually a few tens of milliseconds, and semiconductor is opened
The actuation time of pass, can be continual less than a microsecond, flexibly distributes the electric energy of multiple output interfaces.When one of them is defeated
When the battery fast charge of outgoing interface is full, the output of several power modules, or the outputting cutting these power modules can be switched
Change to other charging output interfaces；
4) noiseless, using contactor as switching switch, sound during switching is very big, and uses semiconductor
Switch switches over, and will not produce any noise；
5) will not arcing.According to semiconductor switch self-characteristic, arcing problem will not be produced in switching, therefore use the longevity
Life length, and cannot there are security risk.
Brief description of the drawings
Below in conjunction with accompanying drawings and embodiments, the invention will be further described, in attached drawing：
Fig. 1 is a kind of schematic diagram of charging system for electric automobile embodiment of the present invention；
Fig. 2 is for a kind of schematic diagram of charging system for electric automobile first preferred embodiment of the present invention；
Fig. 3 is the schematic diagram that switch element includes first semiconductor switch in Fig. 2；
Fig. 4 is the schematic diagram that switch element includes the second semiconductor switch and the 3rd semiconductor switch in Fig. 2；
Fig. 5 is the second semiconductor switch and the circuit diagram that the 3rd semiconductor switch is field-effect tube in Fig. 4；
Fig. 6 is for a kind of schematic diagram of the second preferred embodiment of charging system for electric automobile of the present invention；
Fig. 7 is the schematic diagram that switch element includes first semiconductor switch in Fig. 6；
Fig. 8 is the schematic diagram that switch element includes the second semiconductor switch and the 3rd semiconductor switch in Fig. 6；
Fig. 9 is the second semiconductor switch and the circuit diagram that the 3rd semiconductor switch is field-effect tube in Fig. 8；
Figure 10 is for a kind of schematic diagram of charging system for electric automobile third preferred embodiment of the present invention；
Figure 11 is the schematic diagram that switch element includes first semiconductor switch in Figure 10；
Figure 12 is the schematic diagram that switch element includes the second semiconductor switch and the 3rd semiconductor switch in Figure 10；
Figure 13 is the second semiconductor switch and the circuit diagram that the 3rd semiconductor switch is field-effect tube in Figure 12；
Figure 14 is for a kind of schematic diagram of the 4th preferred embodiment of charging system for electric automobile of the present invention.
Embodiment
In order to which the technical features, objects and effects of the present invention are more clearly understood, now compare attached drawing and describe in detail
The embodiment of the present invention.
As shown in Figure 1, be a kind of schematic diagram of charging system for electric automobile embodiment of the present invention, the electric automobile Charging
System has multichannel charging output interface, its specifically include with the charhing unit 10 that is connected of outside three-phase alternating-current supply and respectively with
At least one switch unit 20 of the charhing unit 10 connection, wherein：Each switch unit 20 is again including one or more difference
The switch element 201 being connected with 10 output terminal of charhing unit, it is in the present embodiment, multiple to refer to two and two or more.Especially
Ground, each switch element include first semiconductor switch again, or including sequentially connected second semiconductor switch and
Three semiconductor switch, and each switch element be used for according to be connected to the switch element electric automobile charged state open or
Shut-off is exported with switching the electric energy between charhing unit 10 and multichannel charging output interface.
Specifically, if each switch element 201 includes first semiconductor switch, which can be
Any one in thyristor, silicon-controlled, insulated gate bipolar transistor or triode；If each switch element 201 include according to
The second semiconductor switch and the 3rd semiconductor switch of secondary connection, the second semiconductor switch and the 3rd semiconductor switch point separately can be with
For any one in thyristor, silicon-controlled, insulated gate bipolar transistor, triode or diode, but lead when the second half
For body switch when being field-effect tube, the 3rd semiconductor switch also can only be field-effect tube, because of the characteristic according to field-effect tube itself,
Its inside includes semiconductor diode, therefore two field-effect tube must be used at the same time by leading directly to phenomenon in order to prevent, and when second
When semiconductor switch and the 3rd semiconductor switch are field-effect tube, the drain electrode of the second semiconductor switch is defeated with charhing unit 10
Exit port connects, and the source electrode of the second semiconductor switch is connected with the source electrode of the 3rd semiconductor switch, the leakage of the 3rd semiconductor switch
The output port of extremely corresponding switch element 201.In addition, the second semiconductor switch and the 3rd semiconductor switch are not simultaneously
Diode, i.e., can only at most include a diode.
As shown in Fig. 2, be a kind of schematic diagram of charging system for electric automobile first preferred embodiment of the present invention, above-mentioned charging
Unit 10 includes at least one power module 101, and each power module 101 is respectively used to exterior three-phase alternating-current supply being converted into
DC power supply, and its cathode output end mouth DC+ connections corresponding with each switch unit 20 respectively, include four with charhing unit 10
Power module 101 (it is understood that the charging system for electric automobile also includes four switch units 20), each switch unit
20 include two switch elements 201, exemplified by each switch element 201 includes the first semiconductor switch, as shown in figure 3, but not
It is limited to this.The cathode output end mouth DC+ of each power module 101 is connected respectively a switch unit 20, i.e., each switching is single
Two switch elements 201 cathode output end mouth DC+ connections with corresponding power module 101 respectively in member 20, specifically, with
Exemplified by one switch element 201, the cathode output end of the hot end of its first semiconductor switch and corresponding power module 101
DC+ connections, the cold end of the first semiconductor switch are the cathode output end mouth of the switch element 201, wherein：First semiconductor
Switch can be it is following any one：Thyristor, silicon-controlled, insulated gate bipolar transistor, triode.First semiconductor switch
Hot end equivalent to the collector of these switching tubes, emitter of the cold end equivalent to these switching tubes.
In the present embodiment, because each switch unit 20 includes two switch elements 201, therefore all switch elements are formed
Have two-way cathode output end mouth a DC+_1 and DC+_2, the cathode output end mouth DC- of each power module 101 respectively with switch element
201 two-way cathode output end mouth forms two-way charging output interface, this two-way charging output interface is used to two electricity
Electrical automobile charges.But it is not limited to this, for example, in the present embodiment, if each switch unit 20 includes three switch lists
Member 201, then all switch elements have a three road cathode output end mouths, and the cathode output end mouth of each power module then respectively with
Three road cathode output end mouths of switch element form the three tunnels charging output interface being used for electric automobile charging.
As shown in figure 4, include sequentially connected second semiconductor switch and the 3rd semiconductor switch for switch element in Fig. 2
Schematic diagram, i.e., unlike the embodiment shown in Fig. 2, switch element 201 is led including the second semiconductor switch and the 3rd half
Body switchs, wherein：Second semiconductor switch can be it is following any one：Thyristor, silicon-controlled, insulated gate bipolar crystal
Pipe, field-effect tube, triode.But when the second semiconductor switch is field-effect tube, the 3rd semiconductor switch must be imitated also for field
Ying Guan, i.e., need two field-effect tube in each switch element, if because of an only field-effect tube, due to its internal semiconductor
The presence of diode, it may occur that straight-through phenomenon.When the second semiconductor switch is other switching tubes except field-effect tube, the 3rd half
Conductor switch can be it is following any one：Thyristor, silicon-controlled, insulated gate bipolar transistor, triode, diode；Or
The second semiconductor switch of person for it is following any one：Thyristor, silicon-controlled, insulated gate bipolar transistor, triode, two poles
Pipe, the 3rd semiconductor switch for it is following any one：Thyristor, silicon-controlled, insulated gate bipolar transistor, field-effect tube, three
Pole pipe.In the present embodiment, it can be above-mentioned switching tube that second in each switch element 201, which closes pipe and the 3rd semiconductor switch,
Any kind combination, but the second semiconductor switch and the 3rd semiconductor switch are not simultaneously diode.In addition, because field is imitated
Should pipe be voltage-type device, it turns on only related with grid potential, but thyristor, silicon-controlled, insulated gate bipolar transistor, three
Pole pipe is current mode device, its collector and emitter can not be reversed.
As shown in figure 5, it is the second semiconductor switch in Fig. 4 and the signal of circuit that the 3rd semiconductor switch is field-effect tube
Scheme, i.e., include field-effect tube Q1 and Q2, DC+ points of the cathode output end mouth of each power module 101 in each switch element 201
Drain electrode not with the field-effect tube Q1 in two switch elements 201 in same switch unit 20 is connected, the source of field-effect tube Q1
Pole is connected with the source electrode of field-effect tube Q2, and the drain electrode output of the field-effect tube Q2 in same switch unit forms two-way cathode respectively
Output port DC+_1 and DC+_2.
As shown in fig. 6, be a kind of schematic diagram of the second preferred embodiment of charging system for electric automobile of the present invention, above-mentioned charging
Unit 10 includes at least one power module 101, unlike Fig. 2, the cathode output end mouth DC- of each power module 101
Connection corresponding with each switch unit 20 respectively.In the present embodiment, four power modules 101 are still included with charhing unit 10
(it is understood that charging system for electric automobile also includes four switch units 20), it is single that switch unit 20 includes two switches
Member 201, exemplified by each switch element 201 includes the first semiconductor switch, as shown in fig. 7, but being not limited to this.Each power supply mould
The cathode output end mouth DC- of block 101 is connected respectively a switch unit 20, i.e., two switches in each switch unit 20 are single
First 201 cathode output end mouth DC- connections with corresponding power module 101 respectively, specifically, are with a switch element 201
Example, the cathode output end mouth DC- connections of the cold end of the first semiconductor switch and corresponding power module 101, the first half lead
The hot end of body switch is the cathode output end mouth of the switch element 201, wherein：First semiconductor switch can be following
Meaning is a kind of：Thyristor, silicon-controlled, insulated gate bipolar transistor, triode.The hot end of first semiconductor switch equivalent to
The collector of these switching tubes, emitter of the cold end equivalent to these switching tubes.
In the present embodiment, because each switch unit 20 includes two switch elements 201, therefore all switch elements have
Two-way cathode output end mouth DC-_1 and DC-_2, the cathode output end mouth DC+ of each power module 101 are single with each switch respectively
Member 201 cathode output end mouth formed two-way charging output interface, this two-way charging output interface be used to two it is electronic
Automobile charges.But it is not limited to this, for example, in the present embodiment, if each switch unit 20 includes three switch elements
201, then all switch elements there are three road cathode output end mouths, the cathode output end mouth of each power module then respectively with switch
Three road cathode output end mouths of unit form the three tunnels charging output interface being used for electric automobile charging.
As shown in figure 8, include sequentially connected second semiconductor switch and the 3rd semiconductor for each switch element in Fig. 6
The schematic diagram of switch, i.e., unlike Fig. 7, each switch element 201 includes the second semiconductor switch and the 3rd semiconductor is opened
Close, it is as the switch element in Fig. 4, and details are not described herein.
As shown in figure 9, it is the second semiconductor switch in Fig. 8 and the signal of circuit that the 3rd semiconductor switch is field-effect tube
Figure, as Fig. 5, includes field-effect tube Q1 and Q2 in each switch element 201, unlike, each power module 101
Cathode output end mouth DC- connects with the drain electrode of the field-effect tube Q1 in two switch elements 201 in same switch unit 20 respectively
Connect, the source electrode of field-effect tube Q1 is connected with the source electrode of field-effect tube Q2, and the drain electrode of the field-effect tube Q2 in same switch unit is defeated
Go out and form two-way cathode output end mouth DC-_1 and DC-_2 respectively.
As shown in Figure 10, it is a kind of schematic diagram of charging system for electric automobile third preferred embodiment of the present invention, it is above-mentioned to fill
Electric unit 10 includes an at least power module 101, in the present embodiment, the cathode output end mouth of each power module 101 and negative
Pole output port is all connected with a switch unit 20, still exemplified by forming four tunnels charging output interface, as shown in the figure, charhing unit 10
Two power modules 101 only need to be included, because the cathode and cathode output end mouth of power module 101 connect a switch unit, therefore
The charging system still includes four switch units 20, and each switch unit 20 includes two switch elements 201, each switch element
Including first semiconductor switch, as shown in figure 11, or first switch unit is opened including sequentially connected second semiconductor
Pass and the 3rd semiconductor switch, as shown in figure 12.
As shown in figure 11, the cathode output end mouth DC+ and cathode output end mouth DC- of two power modules 101 are all connected with one
Switch unit 20, specifically, should by taking one switch unit 20 of cathode output end mouth DC+ connections of one of power module as an example
The hot end of two the first semiconductor switch in switch unit 20 is all connected with the cathode output end DC+ of corresponding power module,
Its cold end is respectively two-way cathode output end the mouth DC+_1 and DC+_2 of two switch elements in the switch unit, equally
Ground, the cathode output end mouth DC- of the power module also connect a switch unit 20, two the first semiconductors of the switch unit 20
The cold end of switch is all connected with the cathode output end mouth DC- of corresponding power module, its hot end is respectively the switch unit
In two switch elements two-way cathode output end mouth DC-_1 and DC-_2.The connection of another power module and switch unit
For mode with above-mentioned power module as the connection mode of switch unit, details are not described herein, therefore owns in the present embodiment
The two-way cathode output end mouth DC+_1 and DC+_2 and two-way cathode output end mouth DC-_1 and DC-_2 that switch element is formed can
The charging output interface to be charged with forming four tunnels to be used for electric automobile.In the present embodiment, the first semiconductor switch can be
Below any one：Thyristor, silicon-controlled, insulated gate bipolar transistor, triode.The hot end of first semiconductor switch
Equivalent to the collector of these switching tubes, cold end equivalent to these switching tubes emitter, because these switching tubes belong to electricity
Flow pattern device, it is to be understood that its hot end and cold end can not be reversed.
As shown in figure 12, unlike Figure 11, each switch element include sequentially connected second semiconductor switch and
3rd semiconductor switch, it is as the switch element in Fig. 4 and Fig. 8, and details are not described herein.As shown in figure 13, it is Figure 12
In the second semiconductor switch and the 3rd semiconductor switch be field-effect tube circuit diagram, it is each as Fig. 5 and Fig. 9
Include field-effect tube Q1 and Q2 in switch element 201, unlike, the cathode output end mouth DC+ of each power module 101 and
Cathode output end mouth DC- is respectively corresponding with the drain electrode of the field-effect tube Q1 in two switch elements 201 in switch unit 20
Connection, the source electrode of field-effect tube Q1 are connected with the source electrode of field-effect tube Q2, are connected with the cathode output end mouth DC+ of power module
The drain electrode output of field-effect tube Q2 in switch unit forms two-way cathode output end mouth DC+_1 and DC+_2 respectively, with power supply mould
The drain electrode output of field-effect tube Q2 in the switch unit of the cathode output end mouth DC- connections of block forms the output of two-way anode respectively
Port DC-_1 and DC-_2.
As shown in figure 14, it is a kind of circuit diagram of the 4th preferred embodiment of charging system for electric automobile of the present invention,
In the present embodiment, charhing unit 10 includes two power modules 201 and two switch units 20, but each switch unit 20 wraps
Four switch elements 201 are included, each switch element is sequentially connected field-effect tube Q1 and Q2 including two.Specifically, each power supply
The cathode output end mouth DC+ of module 101 is connected respectively a switch unit 20, i.e. field-effect in four switch elements 201
The pipe Q1 cathode output end mouth DC+ connections with corresponding power module 101 respectively, source electrode and the field-effect tube Q2 of field-effect tube Q1
Source electrode connection, the drain electrode output of the field-effect tube Q2 in four switch elements 201 forms four road cathode output end mouth DC respectively
+ _ 1, DC+_2, DC+_3 and DC+_4.Therefore the cathode output end mouth of each power module respectively with four tunnels of switch element just
Pole output port forms the four tunnels charging output interface being used for electric automobile charging.
Especially, charging system for electric automobile of the present invention further includes a controller, the controller respectively with each semiconductor
The control terminal connection of switch, in the above-described embodiments, if semiconductor switch is thyristor, silicon-controlled, insulated gate bipolar crystal
Pipe, any one in triode, then control terminal is the base stage of these semiconductor switch；If switching tube is field-effect tube, control
End processed is the grid of the field-effect tube.The controller passes through the BMS (Battery in communication interface and electric automobile at the same time
Management System, battery management system) communication, according to the charged state for the electric automobile for connecting each switch element
The on or off of semiconductor switch in the switch element is controlled, and can only at most have a switch element in each switch unit
In the conduction state, the charged state of electric automobile is mainly used for representing the charge capacity of the electric automobile at this time.
In above-mentioned all embodiments, two switch elements in same switch unit can not be in the conduction state at the same time,
Can only at most have that a switch element is in the conduction state, and each switch element is used for the charging according to corresponding electric automobile
State on or off, by taking first preferred embodiment as an example, when the batteries of electric automobile for being connected to charging output interface Gun1 is fast
Full of when, the switch element that one or more cathode output end mouths are DC+_2 can be turned off, or allowed in same switch unit
In cathode output end mouth be DC+_1 switch element it is in the conduction state, to realize the output for switching several power modules, or
Person is outputted to other charging output interfaces these power modules, so as to neatly distribute power module and charge defeated
Electric energy output between outgoing interface.
In addition, in the above embodiment of the present invention, each switch element 201 is not limited to only include first semiconductor
Switch or the situation of sequentially connected second semiconductor switch and the 3rd semiconductor switch, can also include thyristor, it is silicon-controlled,
Insulated gate bipolar transistor, triode, any number of combination of any kind of diode, but must be fulfilled for：Each switch
The semiconductor switch that unit includes can not all diodes, and when including field-effect tube, it is necessary to while use two
Field-effect tube is to avoid straight-through phenomenon.
Therefore, implement a kind of charging system for electric automobile of the present invention, each power module outlet mouth cathode and/or
Anode installs a switch unit, and switch unit unit includes one or more switches being connected respectively with power module outlet mouth
Unit, especially, each switch element are formed by semiconductor switch, are divided by controlling the on or off of semiconductor switch
With the electric energy output between power module and multichannel charging output interface, and in normal work, battery in electric automobile it
Between will not direct short circuit, therefore the charging system can realize the function of " machine more fill ".
In addition, the present invention includes first semiconductor switch or sequentially connected second by using each switch element
Semiconductor switch and the 3rd semiconductor switch scheme, have the following advantages：
1) cost is low, and for relatively existing contactor scheme, cost needed for the present invention is low, because of the price of semiconductor switch
Only 1/10th of contactor price；
2) occupy little space, the present invention is using the space shared by semiconductor switch less than existing using contactor scheme
1/5th, and semiconductor switch can also be installed on conducting copper bus, allowed conducting copper bus auxiliary heat dissipation, further reduced body
Product.The small size of semiconductor switch, allows a large amount of modules to be integrated on a charging system；
3) output of electric energy can flexibly be distributed.The actuation time of contactor is usually a few tens of milliseconds, and semiconductor is opened
The actuation time of pass, can be continual less than a microsecond, flexibly distributes the electric energy of multiple output interfaces.When one of them is defeated
When the battery fast charge of outgoing interface is full, the output of several power modules, or the outputting cutting these power modules can be switched
Change to other charging output interfaces；
4) noiseless, using contactor as switching switch, sound during switching is very big, and uses semiconductor
Switch switches over, and will not produce any noise；
5) will not arcing.According to switching tube self-characteristic, arcing problem, therefore service life will not be produced in switching
, and cannot there are security risk.
The embodiment of the present invention is described above in conjunction with attached drawing, but the invention is not limited in above-mentioned specific
Embodiment, above-mentioned embodiment is only schematical, rather than restricted, those of ordinary skill in the art
Under the enlightenment of the present invention, in the case of present inventive concept and scope of the claimed protection is not departed from, it can also make very much
Form, these are belonged within the protection of the present invention.
Claims (6)
1. a kind of charging system for electric automobile, there is multichannel charging output interface, it is characterised in that including charhing unit and with institute
At least one switch unit of the output port connection of charhing unit is stated, wherein：Each switch unit is opened including one or more
Unit is closed, and each switch element includes first semiconductor switch or sequentially connected second semiconductor switch and the 3rd half
Conductor switchs, each switch element be used for according to the charged state of the electric automobile that is connected to the switch element be switched on or off with
Switch the electric energy output between the charhing unit and multichannel charging output interface；
The charhing unit includes at least one power module, and the cathode and anode of each power module connect all respectively
Unit is changed, the cathode output end mouth of each switch element is formed with the cathode output end mouth of each switch element to be used for respectively to electricity
The multichannel charging output interface of electrical automobile charging；
The control terminal that the charging system for electric automobile further includes respectively with each semiconductor switch is connected, and for according to connection
The charged state of the electric automobile of each switch element controls the control of the on or off of semiconductor switch in the switch element
Device, and can only at most have the switch element in the conduction state in each switch unit.
2. charging system for electric automobile according to claim 1, it is characterised in that first semiconductor switch is following
Any one：Thyristor, silicon-controlled, insulated gate bipolar transistor, triode.
3. charging system for electric automobile according to claim 1, it is characterised in that second semiconductor switch and described
3rd semiconductor switch is field-effect tube, wherein：The drain electrode and the output of the charhing unit of second semiconductor switch
Port connects, and the source electrode of second semiconductor switch is connected with the source electrode of the 3rd semiconductor switch, and the described 3rd half leads
The drain output mouth of body switch is the output port of corresponding switch element.
4. charging system for electric automobile according to claim 1, it is characterised in that second semiconductor switch is following
Any one：Thyristor, silicon-controlled, insulated gate bipolar transistor, triode；3rd semiconductor switch is following any
It is a kind of：Thyristor, silicon-controlled, insulated gate bipolar transistor, triode, diode.
5. charging system for electric automobile according to claim 1, it is characterised in that second semiconductor switch is following
Any one：Thyristor, silicon-controlled, insulated gate bipolar transistor, triode, diode；3rd semiconductor switch is
Below any one：Thyristor, silicon-controlled, insulated gate bipolar transistor, triode.
6. charging system for electric automobile according to claim 1, it is characterised in that each power module is respectively to use
In exchange-- DC converter that AC power is converted to DC power supply.
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| CN201410462447.0A CN104967154B (en) | 2014-09-11 | 2014-09-11 | A kind of charging system for electric automobile |
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| CN201410462447.0A CN104967154B (en) | 2014-09-11 | 2014-09-11 | A kind of charging system for electric automobile |
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| CN106899056B (en) * | 2017-02-25 | 2018-06-01 | 吴钰淳 | Random fast charging device and method |
| WO2019037072A1 (en) * | 2017-08-25 | 2019-02-28 | 上海欣锐电控技术有限公司 | Direct current charging device |
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| CN201877858U (en) * | 2010-12-14 | 2011-06-22 | 山东电力研究院 | Electric vehicle charging pile with multi-path control charging sockets |
| EP2388884A2 (en) * | 2010-05-19 | 2011-11-23 | Hitachi, Ltd. | Method of receiving charge, method of controlling charge, charge control unit and charging equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| EP2388884A2 (en) * | 2010-05-19 | 2011-11-23 | Hitachi, Ltd. | Method of receiving charge, method of controlling charge, charge control unit and charging equipment |
| CN201877858U (en) * | 2010-12-14 | 2011-06-22 | 山东电力研究院 | Electric vehicle charging pile with multi-path control charging sockets |
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