CN108616155A - Charging method and charging unit - Google Patents
Charging method and charging unit Download PDFInfo
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- CN108616155A CN108616155A CN201810449013.5A CN201810449013A CN108616155A CN 108616155 A CN108616155 A CN 108616155A CN 201810449013 A CN201810449013 A CN 201810449013A CN 108616155 A CN108616155 A CN 108616155A
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Abstract
A kind of charging unit of disclosure offer and charging method.Charging unit includes：One input terminal, for receiving alternating current；Three charhing units, for when judging external communication electricity for three-phase alternating current, receiving the alternating current respectively, and when judging external communication electricity for single-phase alternating current, being selectively accessing power-switching circuit according to size of current to convert the alternating current.The charging unit that the disclosure provides can be compatible with three-phase charging and single-phase charging, and when can meet single-phase charging to high-power charging the needs of.
Description
Technical field
This disclosure relates to which power technique fields, single-phase charging and three-phase charging can be adapted in particular to a kind of
Charging method and charging unit.
Background technology
Vehicular charger is the important component on electric vehicle, to Vehicular charger carry out easily charging relation to electronic
The promotion and popularization of automobile.
In the prior art, the Vehicular charger of electric vehicle can only often receive single-phase alternating current or can only receive three
Phase alternating current charging source can be divided into single-phase charger and three-phase charger according to the difference of exchange side input power pattern.
If an electric vehicle with three-phase charger has been parked in the parking lot of only single-phase charging pile, charging work can not be carried out
Industry.Existing way is to be equipped with single-phase portable charger to solve the problems, such as the emergent charging of client, still with vehicle for electric vehicle
Not only cause the experience of user bad in this way, there is also Electrical Safety hidden danger, increase the cost of electric vehicle.
In addition, the power grade of single-phase charger generally includes 3.3kw and 6.6kw, the power etc. of three-phase input charger
Grade is usually in 11kw or so.The power grade of charger also can be therewith with the continuous promotion of electric vehicle cruising ability in future
Increase, traditional 3.3kw 6.6kw power single-phases charger may not be able to meet the needs of client, and 11kw is even higher
The charger of power grade will become mainstream.
Therefore, it is necessary to the charging unit of high-power charge requirement of a kind of not only easy to operate but also when single-phase charging can be met with
Charging method.
It should be noted that information is only used for reinforcing the reason to the background of the disclosure disclosed in above-mentioned background technology part
Solution, therefore may include the information not constituted to the prior art known to persons of ordinary skill in the art.
Invention content
The disclosure is designed to provide a kind of charging method and charging unit, for overcoming existing charging unit to be only capable of connecing
Solution party is provided by the technology drawback of single-phase input power supply or three-phase input power supply, and for the power demand for meeting single-phase charging
Case.
According to the first aspect of the embodiments of the present disclosure, a kind of charging unit is provided, including：
A kind of charging unit, including：
Input terminal, including the first charge node, the second charge node, third charge node and center line node, for connecing
Input AC electricity is received,
Wherein, when the input AC electricity is three-phase alternating current, the input terminal passes through first charge node, institute
It states the second charge node and the third charge node receives corresponding single-phase alternating current in the input AC electricity respectively, when described
When input AC electricity is single-phase alternating current, the input terminal passes through described in first charge node and center line node reception
Input AC electricity；
Power module has first input end, the second input terminal, third input terminal and center line input terminal；
There is first switch group first end and second end, the first end to be coupled with second input terminal；
There is second switch group first end and second end, the first end to be coupled with the third input terminal；
Control module is coupled to the first switch group, the second switch group and the input terminal, for described
When input AC electricity is three-phase alternating current, control the second end of the first switch group and the second switch group respectively with institute
State the second charge node and third charge node coupling；When the input AC electricity is single-phase alternating current, according to described
The second end that the output-current rating size of input AC electricity controls the first switch group selectively charges with described first
Node is coupled or is disconnected, and the second end of the second switch group is selectively coupled or disconnected with first charge node.
In a kind of exemplary embodiment of the disclosure, further include：
Judgment module is coupled to the control module, for judging institute when single-phase alternating current in the input AC electricity
The output-current rating size of input AC electricity is stated, and will determine that result sends the control module to, makes the control module
It is corresponded to according to the judging result and controls the first switch group and the second switch group.
It is single-phase alternating current, and the input in the input AC electricity in a kind of exemplary embodiment of the disclosure
When the output-current rating of alternating current is less than or equal to the first electric current preset value, the control module controls the first switch respectively
Group and the second switch group disconnect.
In a kind of exemplary embodiment of the disclosure, when the input AC electricity is single-phase alternating current, and the input
When the output-current rating of alternating current is more than the first electric current preset value and is less than or equal to the second electric current preset value, the control module
The second end and first charge node for controlling the first switch group couple, and the second switch group disconnects.
In a kind of exemplary embodiment of the disclosure, first electric current preset value is 16A.
It is single-phase alternating current, and the input in the input AC electricity in a kind of exemplary embodiment of the disclosure
When the output-current rating of alternating current is more than the second electric current preset value, the control module controls the second of the first switch group
The second end of end and the second switch group is coupled with first charge node.
It is any one in the first switch group, the second switch group in a kind of exemplary embodiment of the disclosure
A includes single-pole double-throw switch (SPDT) or controlled tr tube.
In a kind of exemplary embodiment of the disclosure, first charge node passes through third with the first input end
Switching group couples.
Further include the resistance in parallel with the third switching group in a kind of exemplary embodiment of the disclosure.
In a kind of exemplary embodiment of the disclosure, the center line node passes through the 4th switching group coupling with the middle line end
It connects.
In a kind of exemplary embodiment of the disclosure, the power module further includes the first charhing unit, the second charging
Unit and third charhing unit, first charhing unit are coupled with the first input end and middle line end, and described second fills
Electric unit is coupled with second input terminal and middle line end, the third charhing unit and the third input terminal and center line
End coupling；First charhing unit, second charhing unit, the third charhing unit respectively include PFC
Circuit and DC to DC converter.
In a kind of exemplary embodiment of the disclosure, first charhing unit, second charhing unit and described
The output end of third charhing unit three is connected in parallel or is connected in series with.
In a kind of exemplary embodiment of the disclosure, the power that first charhing unit is exported is 3.3kW, described
The power that second charhing unit is exported is 3.3kW, and the power that the third charhing unit is exported is 3.3kW.
In a kind of exemplary embodiment of the disclosure, the control module is arranged with the power module in an entity
In structure.
A kind of charging method, is applied to a charging unit, and the charging unit includes input terminal, the first charge node, the
Two charge nodes, third charge node and center line node, for receiving input AC electricity；Power module has the first input
End, the second input terminal, third input terminal and center line input terminal；First switch group has first end and second end, the first end
It is coupled with second input terminal；Second switch group has first end and second end, the first end and the third input terminal
Coupling；Including：
Judge charge mode for three-phase charge mode or single-phase charge mode；
In three-phase charge mode, the second end and described second that control the first switch group of the charging unit are opened
The second end of pass group is coupled with second charge node, the third charge node respectively；
In single-phase charge mode, the second end of the first switch of the charging unit, the second switch are controlled
Second end selectively with first charge node couple or disconnect.
In a kind of exemplary embodiment of the disclosure, the of the first switch group of the control charging unit
Two ends, the second switch group second end selectively with first charge node couple or disconnect include：
Judge charging current；
When the charging current is less than or equal to the first preset value, the second end of the first switch group and described is controlled
The second end of second switch group disconnects；
When the charging current is more than the first preset value and is less than or equal to the second preset value, the first switch is controlled
Second end couples first charge node, and the second switch group disconnects；
When the charging current is more than the second preset value, the second end and described second that control the first switch are opened
The second end of pass couples first charge node.
In a kind of exemplary embodiment of the disclosure, first preset value is 16A, and second preset value is 32A.
It is any one in the first switch group, the second switch group in a kind of exemplary embodiment of the disclosure
A includes single-pole double-throw switch (SPDT) or controlled tr tube.
In a kind of exemplary embodiment of the disclosure, first charge node passes through third with the first input end
Switching group couples.
In a kind of exemplary embodiment of the disclosure, the charging unit further includes the parallel connection electricity of the third switching group
Resistance, the power module further includes a bus capacitance, judges charge mode for three-phase charge mode or single-phase charging mould described
Further include before formula：
The first switch group, the second switch group and the third switching group are disconnected, the parallel resistance is passed through
To bus capacitance into line precharge, it is closed the third switching group when the voltage on bus capacitance reaches the first predeterminated voltage,
After the voltage on bus capacitance reaches the second predeterminated voltage, judge charge mode for three-phase charge mode or single-phase charging mould
Formula.
In a kind of exemplary embodiment of the disclosure, the center line node passes through the 4th switching group coupling with the middle line end
It connects.
The charging unit and charging method that the disclosure provides are judging to charge by judging charge mode and charging current
Charhing unit is accessed in current converter circuit by switching switch by charging current levels when pattern is single-phase charging, is being ensured
Electrical Safety, save cost, improve user experience under the premise of realize to the simultaneous of three-phase charge mode and single-phase charge mode
Hold, and meets demand of the single-phase charge mode to high-power charging.
It should be understood that above general description and following detailed description is only exemplary and explanatory, not
The disclosure can be limited.
Description of the drawings
The drawings herein are incorporated into the specification and forms part of this specification, and shows the implementation for meeting the disclosure
Example, and together with specification for explaining the principles of this disclosure.It should be evident that the accompanying drawings in the following description is only the disclosure
Some embodiments for those of ordinary skill in the art without creative efforts, can also basis
These attached drawings obtain other attached drawings.
Fig. 1 schematically shows a kind of schematic diagram of charging unit in disclosure exemplary embodiment.
Fig. 2 schematically shows the schematic diagram of another charging unit in disclosure exemplary embodiment.
Fig. 3 schematically shows the schematic diagram of another charging unit in disclosure exemplary embodiment.
Fig. 4 schematically shows the schematic diagram of another charging unit in disclosure exemplary embodiment.
Fig. 5 schematically shows the schematic diagram of another charging unit in disclosure exemplary embodiment.
Fig. 6 schematically shows the schematic diagram of another charging unit in disclosure exemplary embodiment.
Fig. 7 schematically shows the realization method schematic diagram of PFC+DC/DC in disclosure exemplary embodiment.
Fig. 8 schematically shows the realization method schematic diagram of another kind PFC+DC/DC in one exemplary embodiment of the disclosure.
Fig. 9 schematically shows a kind of flow chart of charging method in disclosure exemplary embodiment.
Specific implementation mode
Example embodiment is described more fully with reference to the drawings.However, example embodiment can be with a variety of shapes
Formula is implemented, and is not understood as limited to example set forth herein；On the contrary, thesing embodiments are provided so that the disclosure will more
Fully and completely, and by the design of example embodiment comprehensively it is communicated to those skilled in the art.Described feature, knot
Structure or characteristic can be in any suitable manner incorporated in one or more embodiments.In the following description, it provides perhaps
More details fully understand embodiment of the present disclosure to provide.It will be appreciated, however, by one skilled in the art that can
It is omitted with technical solution of the disclosure one or more in the specific detail, or others side may be used
Method, constituent element, device, step etc..In other cases, be not shown in detail or describe known solution to avoid a presumptuous guest usurps the role of the host and
So that all aspects of this disclosure thicken.
In addition, attached drawing is only the schematic illustrations of the disclosure, identical reference numeral indicates same or similar portion in figure
Point, thus repetition thereof will be omitted.Some block diagrams shown in attached drawing are functional entitys, not necessarily necessary and object
The entity managed or be logically independent is corresponding.Software form may be used to realize these functional entitys, or in one or more
These functional entitys are realized in hardware module or integrated circuit, or in heterogeneous networks and/or processor device and/or microcontroller
These functional entitys are realized in device.
Disclosure example embodiment is described in detail below in conjunction with the accompanying drawings.
Fig. 1 schematically shows a kind of schematic diagram of charging unit in disclosure exemplary embodiment.
With reference to figure 1, charging unit 100 may include：
Input terminal 1, including the first charge node 11, the second charge node 12, third charge node 13 and center line node
14, for receiving input AC electricity.Input AC electricity can be provided by charging equipment, such as charging pile, and charging equipment can not wrap
Containing center line.
Power module 2 may include first input end 21, the second input terminal 22, third input terminal 23 and center line input
End 24.
There is first switch group 31 first end and second end, first end to be coupled with the second input terminal 22, second end selectivity
Ground and the first charge node 11, the coupling of the second charge node 12 disconnect.
There is second switch group 32 first end and second end, first end to be coupled with third input terminal 23, second end selectivity
Ground and the first charge node 11, the coupling of third charge node 13 disconnect.
Control module 4 is coupled to first switch group 31, second switch group 32 and input terminal 1, for judging input AC
Electricity is three-phase alternating current or single-phase alternating current, and controls first switch group and second switch group.
When input AC electricity be three-phase alternating current when, input terminal 1 by the first charge node 11, the second charge node 12 and
Third charge node 13 receives corresponding single-phase alternating current in the input AC electricity respectively.Control module 4 controls first switch group
32 and the second end of second switch group 32 coupled respectively with the second charge node 12 and third charge node 13.
When input AC electricity is single-phase alternating current, input terminal 1 is received by the first charge node 11 and center line node 14
Input AC electricity.Control module 4 controls the second end of first switch group 31 according to the output-current rating size of input AC electricity
Selectively couple or disconnect with the first charge node 11, the second end of second switch group 32 selectively with the first charge node
11 couplings disconnect.
Fig. 2 is the block diagram of one embodiment of charging unit 100.
With reference to figure 2, in one embodiment, power module 2 may include：
First charhing unit 211 is coupled with first input end 21, has line end in first coupled with center line input terminal 24
241。
Second charhing unit 221 is coupled with the second input terminal 22, has line end in second coupled with center line input terminal 24
242。
Third charhing unit 231 is coupled with third input terminal 23, has line end in the third coupled with center line input terminal 24
243。
In an embodiment of the present disclosure, fixation input interface when the first charhing unit is single-phase charging can be set,
Other two charhing units choose whether to cut by increased auxiliary switch bridge arm.
When input AC electricity be three-phase alternating current when, input terminal 1 by the first charge node 11, the second charge node 12 and
Third charge node 13 receives corresponding single-phase alternating current in the input AC electricity respectively.At this point, the first charhing unit 21 is run
And corresponding single-phase alternating current in input AC electricity is converted, control unit 4 controls the second end and second of first switch group 31
The second end of switching group 32 is coupled with the second charge node 12 and third charge node 13 respectively, makes the second charhing unit 22 and the
Three charhing units 23 convert corresponding single-phase alternating current in the input AC electricity respectively.This pattern and traditional three-phase charging mould
Formula is similar, therefore repeats no more.
When input AC electricity is single-phase alternating current, input terminal 1 is received by the first charge node 11 and center line node 14
Input AC electricity.
In one embodiment, when input AC electricity is single-phase alternating current, and the charging of the first charhing unit 211, second is single
When member 221 and the output end of 231 three of third charhing unit are connected in parallel (as shown in Figure 2), the first charhing unit 211 run and
Convert input AC electricity.At this point, control module 4 controls first switch respectively according to the output-current rating size of input AC electricity
The second end of group 31 is selectively coupled or is disconnected with the first charge node 11, the second end of second switch group 32 selectively with
First charge node 11 is coupled or is disconnected, and the second charhing unit 221 and third charhing unit 231 is made selectively to run and convert
Input AC electricity.
It is understood that although control unit 4 separates drafting with power cell 2 in the attached drawing of the present embodiment,
In some other embodiment, the entity structure of control unit 4 can also be arranged with power cell 2 in the same entity structure, example
In chip, circuit module.
Fig. 3 schematically shows the schematic diagram of another charging unit in disclosure exemplary embodiment.
Further include in a kind of exemplary embodiment of the disclosure with reference to figure 3：
Judgment module 5 is coupled to control module 4, for judging input AC when input AC electricity is single-phase alternating current
The output-current rating size of electricity, and will determine that result sends control module 4 to, so that control module 4 is corresponded to according to judging result
Control first switch group 31 and second switch group 32.
In the present embodiment, when input AC electricity is single-phase alternating current, the electric current judged according to judgment module 5 is big
It is small, access one, two or three charhing unit can be selected, to realize the expansion to charge power.
In one embodiment, it is single-phase alternating current in input AC electricity, and the output-current rating of input AC electricity is small
When equal to the first electric current preset value, control unit 4 can control first switch group 31 respectively and second switch group 32 disconnects,
Make the first charhing unit 211 conversion input AC electricity and the second charhing unit 221 and third charhing unit 231 do not convert input
Alternating current.
When the output-current rating of input AC electricity is more than the first electric current preset value and is less than or equal to the second electric current preset value
When, control unit 4 can control the second end of first switch group 31 respectively and the first charge node 11 couples, second switch group 32
It disconnects, make the second charhing unit 221 and 211 parallel running of the first charhing unit and converts input AC electricity, third charhing unit
231 do not convert input AC electricity.
In one embodiment, it is single-phase alternating current in input AC electricity, and the output-current rating of input AC electricity is big
When the second electric current preset value, the second charhing unit 221 and third charhing unit 231 control first switch group 31 and respectively
The second end of two switching groups 32 is coupled with the first charge node 11 respectively, makes the second charhing unit 221, third charhing unit 231
With 211 parallel running of the first charhing unit and convert input AC electricity.
In one embodiment, the first electric current preset value is 16A, and the second electric current preset value is 32A.First charhing unit 21
The power exported is 3.3kW, and the power that the second charhing unit 22 is exported is 3.3kW, what third charhing unit 23 was exported
Power is 3.3kW.
That is, when judging that external charge current is not more than 16A, it can select to only access the first charhing unit 11, realize defeated
Go out the charging that power is up to 3.3kW.
When judging external charge current more than 16A and being not less than 32A, access 21 He of the first charhing unit can be selected
Another charhing unit realizes that output power is up to the charging of 7kW.It is understood that although the present embodiment is to access
For second charhing unit 221, but in some other embodiment, access third charhing unit 231 can also be selected, disconnects the
Two charhing units 221, can also reach same effect.By selecting the charhing unit of access, can be provided for single-phase charging
Backup scenario.
When judging that external charge current is more than 32A, can select three charhing units accessing current converter circuit.
At this point it is possible to realize that output power is up to the charging of 11kW, single-phase charge mode is met to a certain extent to high-power
The demand of charging.
In the embodiment shown in fig. 3, further include third switching group 33 and the 4th switching group 34.
Control module 4 controls the conducting and disconnection of third switching group 33, so as to be single phase ac in input AC electricity
When electric, the charhing unit of access is flexibly set.For example, when specified charging current is less than or equal to the first electric current preset value, it can be with
The optional access current converter circuit in three charhing units；When specified charhing unit is more than the first electric current preset value and small
When equal to the second electric current preset value, can in three charhing units it is optional two access current converter circuit.
In addition, setting third switching group 33 can also be when input AC electricity be single-phase alternating current and the first charhing unit loses
When effect, other two charhing unit is flexibly selected, avoids the failure of the first charhing unit that entire charging unit is caused to fail, is improved
The reliability of charging unit.
Control module 4 can by control the 4th switching group 34 conducting and disconnection, to control power module 2 whether with
Center line node connects.The setting of 4th switching group 34 can improve fitness of the charging unit to external charging ring border.
In the embodiment shown in fig. 3, each switching group is single-pole double-throw switch (SPDT), in some other embodiment, first
Any one in switching group 31, second switch group 32, third switching group 33, the 4th switching group 34 include single-pole double-throw switch (SPDT) or
Controlled tr tube.Switch variety can be voluntarily arranged according to actual conditions in those skilled in the art, if can realize with as above
The access scheme, all within the protection domain of the disclosure.
Fig. 4 schematically shows the schematic diagram of another charging unit in disclosure exemplary embodiment.
With reference to figure 4, by taking first switch group, the equal controlled tr tube of second switch group as an example.If judged by control module 4
External charging power supply is single-phase alternating current, and the electric current that control unit 4 can receive the output of judgment module 5 judges signal to basis
The maximum power supply current value of foreign current determines the charhing unit number of access.If the maximum supply current of external communication electricity is
16A only needs the work of the first charhing unit 211；If the maximum supply current of external communication electricity is 32A, second can be controlled and filled
The auxiliary switch S1 of electric unit 221 is closed and S2 is disconnected, to realize the first charhing unit 211 and the second charhing unit 221 simultaneously
Join work and exports 7kw；Similarly, if the maximum supply current of external communication electricity is 48A or higher current limit, second can be controlled
The auxiliary switch S1 of charhing unit 221 is closed and S2 is disconnected and the auxiliary switch S3 of third charhing unit 231 is closed and S4 is disconnected
It opens, at this time three modules while parallel operation, output full power 11KW.
In some embodiments, the auxiliary switch S1 and S2 of the second charhing unit 221, the auxiliary of third charhing unit 231
Switch S3 and S4 are controlled tr tube, and controlled tr tube for example can be relay.
The charger that single-phase/three-phase compatibility is realized by the way that auxiliary switch S1, S2, S3, S4 is arranged, can make control mode
It is simple easy to implement.
In one embodiment, when input AC electricity is single-phase alternating current, and the charging of the first charhing unit 211, second is single
When member 221 and the output end of 231 three of third charhing unit are connected in series with, control unit 4 control respectively first switch group 31 with
And the second end of second switch group 32 is coupled with the first charge node 11 respectively, the first charhing unit 211, the second charhing unit
221 and third charhing unit 231 be operated together and convert input AC electricity.
When charhing unit is connected, judgement size of current is may not need, and three charhing units are sequentially directly accessed into electricity
Power-switching circuit provides the charging unit that output power is up to 11kW.
In a kind of exemplary embodiment of the disclosure, the first charhing unit 211, second charging in power module 2 is single
Member 221, third charhing unit 231 respectively include circuit of power factor correction PFC and DC to DC converter DC/DC.
Fig. 5 schematically shows the schematic diagram of another charging unit in disclosure exemplary embodiment.
With reference to figure 5, in the embodiment shown in fig. 5, control unit 4 and power cell 2, can in the same entity structure
To control switch 31,32,33,34.In addition, control unit 4 can control power mould by the keying of control multiple switch pipe 25
Block is run.
Fig. 6 schematically shows the realization method schematic diagram of PFC+DC/DC in disclosure exemplary embodiment.Fig. 7 is schematic
The realization method schematic diagram of another kind PFC+DC/DC in one exemplary embodiment of the disclosure is shown.
PFC+DC/DC realization methods in Fig. 6 and Fig. 7 are merely illustrative, in the other embodiment of the disclosure, PFC+DC/
The realization method of DC can also be other modes, and the disclosure is not particularly limited this.
Fig. 8 schematically shows the schematic diagram of another charging unit in disclosure exemplary embodiment.
With reference to figure 8, in one embodiment, third switching group 33 can also have parallel resistance R.
Power module further includes bus capacitance C, before judging charge mode for three-phase charge mode or single-phase charge mode
Further include：
First switch group 31, second switch group 32 and third switching group 33 are disconnected, the single PFC moulds in power module are made
Block is by parallel resistance R to the bus capacitance C in power module into line precharge.When the voltage of C on bus capacitance reaches first
It is closed third switching group 33 when predeterminated voltage, after the voltage on bus capacitance reaches the second predeterminated voltage, judges charge mode
It runs for three-phase charge mode or single-phase charge mode and accordingly.
By parallel resistance being arranged into line precharge to third switch unit, can reach to avoid excessive resistance is arranged
The technique effect of limit inrush currents.
Fig. 9 schematically shows a kind of flow chart of charging method in disclosure exemplary embodiment.
With reference to figure 7, charging method 700 may include：
Step S1 judges charge mode for three-phase charge mode or single-phase charge mode；
Step S2 controls the first charhing unit, the second charhing unit, third of charging unit in three-phase charge mode
Charhing unit is coupled with the first charge node, the second charge node, third charge node respectively；
Step S3 controls second charhing unit of the charging unit, the third is filled in single-phase charge mode
Electric unit is selectively coupled or is disconnected with first charge node.
Wherein, step S3 may include：
Step S31, judges charging current；
Step S32 controls second charhing unit and institute when the charging current is less than or equal to the first preset value
State the disconnection of third charhing unit；
Step S33, is more than the first preset value and when less than or equal to the second preset value in the charging current, control described the
Two charhing units couple first charge node, and the third charhing unit disconnects；
Step S34 controls second charhing unit and described the when the charging current is more than the second preset value
Three charhing units couple first charge node.
In a kind of exemplary embodiment of the disclosure, first preset value is 16A, and second preset value is 32A.
In a kind of exemplary embodiment of the disclosure, first charhing unit, second charhing unit and institute
The output power for stating third charhing unit is 3.3kW.
The charging method that the disclosure provides is judging charge mode to be single-phase by judging charge mode and charging current
When charging by charging current levels by switch switch by charhing unit access current converter circuit in, ensure Electrical Safety,
The compatibility to three-phase charge mode and single-phase charge mode is realized under the premise of saving cost, raising user experience, and full
Foot demand of the single-phase charge mode to high-power charging.
Those skilled in the art after considering the specification and implementing the invention disclosed here, will readily occur to its of the disclosure
Its embodiment.This application is intended to cover any variations, uses, or adaptations of the disclosure, these modifications, purposes or
Person's adaptive change follows the general principles of this disclosure and includes the undocumented common knowledge in the art of the disclosure
Or conventional techniques.The description and examples are only to be considered as illustrative, and the true scope of the disclosure and design are wanted by right
It asks and points out.
Claims (21)
1. a kind of charging unit, which is characterized in that including：
Input terminal, including the first charge node, the second charge node, third charge node and center line node, it is defeated for receiving
Enter alternating current,
Wherein, when the input AC electricity is three-phase alternating current, the input terminal passes through first charge node, described the
Two charge nodes and the third charge node receive corresponding single-phase alternating current in the input AC electricity respectively, when the input
When alternating current is single-phase alternating current, the input terminal receives the input by first charge node and the center line node
Alternating current；
Power module has first input end, the second input terminal, third input terminal and center line input terminal；
There is first switch group first end and second end, the first end to be coupled with second input terminal；
There is second switch group first end and second end, the first end to be coupled with the third input terminal；
Control module is coupled to the first switch group, the second switch group and the input terminal, in the input
When alternating current is three-phase alternating current, the second end of the first switch group and the second switch group is controlled respectively with described the
Two charge nodes and third charge node coupling；When the input AC electricity is single-phase alternating current, according to the input
The output-current rating size of alternating current control the second end of the first switch group selectively with first charge node
Coupling disconnects, and the second end of the second switch group is selectively coupled or disconnected with first charge node.
2. charging unit as described in claim 1, which is characterized in that further include：
Judgment module is coupled to the control module, described defeated for judging when the input AC electricity is single-phase alternating current
Enter the output-current rating size of alternating current, and will determine that result sends the control module to, makes the control module foundation
The judging result, which corresponds to, controls the first switch group and the second switch group.
3. charging unit as claimed in claim 2, which is characterized in that in the input AC electricity be single-phase alternating current, and institute
When stating the output-current rating of input AC electricity and being less than or equal to the first electric current preset value, the control module controls described the respectively
One switching group and the second switch group disconnect.
4. charging unit as claimed in claim 2, which is characterized in that when the input AC electricity is single-phase alternating current, and institute
The output-current rating of input AC electricity is stated more than the first electric current preset value and when being less than or equal to the second electric current preset value, the control
Molding block controls the second end of the first switch group and first charge node couples, and the second switch group disconnects.
5. charging unit as described in claim 3 or 4, which is characterized in that first electric current preset value is 16A.
6. charging unit as claimed in claim 2, which is characterized in that in the input AC electricity be single-phase alternating current, and institute
When stating the output-current rating of input AC electricity more than the second electric current preset value, the control module controls the first switch group
Second end and second end and first charge node of the second switch group couple.
7. charging unit as described in claim 1, which is characterized in that in the first switch group, the second switch group
Any one includes single-pole double-throw switch (SPDT) or controlled tr tube.
8. charging unit as described in claim 1, which is characterized in that first charge node is logical with the first input end
Cross the coupling of third switching group.
9. charging unit as claimed in claim 8, which is characterized in that further include the resistance in parallel with the third switching group.
10. charging unit as described in claim 1, which is characterized in that the center line node passes through the 4th with the middle line end
Switching group couples.
11. charging unit as described in claim 1, which is characterized in that the power module further includes the first charhing unit,
Two charhing units and third charhing unit, first charhing unit is coupled with the first input end and middle line end, described
Second charhing unit and second input terminal and middle line end couple, the third charhing unit and the third input terminal with
And middle line end coupling；First charhing unit, second charhing unit, the third charhing unit respectively include power because
Number correcting circuit and DC to DC converter.
12. charging unit as claimed in claim 11, which is characterized in that first charhing unit, second charging are single
The output end of the first and described third charhing unit three is connected in parallel or is connected in series with.
13. charging unit as claimed in claim 11, which is characterized in that the power that first charhing unit is exported is
3.3kW, the power that second charhing unit is exported are 3.3kW, and the power that the third charhing unit is exported is
3.3kW。
14. charging unit as described in claim 1, which is characterized in that the control module is arranged with the power module
In one entity structure.
15. a kind of charging method is applied to a charging unit, the charging unit includes input terminal, the first charge node, second
Charge node, third charge node and center line node, for receiving input AC electricity；Power module has first input end,
Second input terminal, third input terminal and center line input terminal；First switch group, have first end and second end, the first end with
The second input terminal coupling；Second switch group has first end and second end, the first end and the third input terminal coupling
It connects；It is characterised in that it includes：
Judge charge mode for three-phase charge mode or single-phase charge mode；
In three-phase charge mode, the second end of the first switch group of the charging unit and the second switch group are controlled
Second end respectively with second charge node, the third charge node couple；
In single-phase charge mode, control the second end of the first switch of the charging unit, the second switch
Two ends selectively couple or disconnect with first charge node.
16. charging method as claimed in claim 15, which is characterized in that described the first of the control charging unit opens
The second end of pass group, the second end of the second switch group are selectively coupled or are disconnected with first charge node：
Judge charging current；
When the charging current is less than or equal to the first preset value, the second end and described second of the first switch group is controlled
The second end of switching group disconnects；
When the charging current is more than the first preset value and is less than or equal to the second preset value, the second of the first switch is controlled
End couples first charge node, and the second switch group disconnects；
When the charging current is more than the second preset value, the second end of the first switch and the second switch are controlled
Second end couples first charge node.
17. charging method as claimed in claim 16, which is characterized in that first preset value is 16A, and described second is default
Value is 32A.
18. charging method as claimed in claim 15, which is characterized in that in the first switch group, the second switch group
Any one include single-pole double-throw switch (SPDT) or controlled tr tube.
19. charging method as claimed in claim 15, which is characterized in that first charge node and the first input end
It is coupled by third switching group.
20. charging method as claimed in claim 19, which is characterized in that the charging unit further includes the third switching group
Parallel resistance, the power module further includes a bus capacitance, judges charge mode for three-phase charge mode or list described
Further include before phase charge mode：
The first switch group, the second switch group and the third switching group are disconnected, by the parallel resistance to total
Line capacitance is closed the third switching group, when total into line precharge when the voltage on bus capacitance reaches the first predeterminated voltage
After voltage on line capacitance reaches the second predeterminated voltage, judge charge mode for three-phase charge mode or single-phase charge mode.
21. charging method as claimed in claim 15, which is characterized in that the center line node passes through the 4th with the middle line end
Switching group couples.
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| CN201810449013.5A CN108616155B (en) | 2018-05-11 | 2018-05-11 | Charging method and charging device |
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| CN201810449013.5A CN108616155B (en) | 2018-05-11 | 2018-05-11 | Charging method and charging device |
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| CN113459859A (en) * | 2021-08-23 | 2021-10-01 | 阳光电源股份有限公司 | New energy charging system, alternating-current charging pile and charging method thereof |
| CN117134471A (en) * | 2022-03-24 | 2023-11-28 | 华为电动技术有限公司 | Charger, vehicle, charging method and medium |
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| DE102022210388A1 (en) * | 2022-09-30 | 2024-04-18 | Robert Bosch Gesellschaft mit beschränkter Haftung | Charger and method of operating the charger |
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