CN217892528U - Direct current charging system for electric automobile - Google Patents

Direct current charging system for electric automobile Download PDF

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Publication number
CN217892528U
CN217892528U CN202222075627.6U CN202222075627U CN217892528U CN 217892528 U CN217892528 U CN 217892528U CN 202222075627 U CN202222075627 U CN 202222075627U CN 217892528 U CN217892528 U CN 217892528U
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direct current
input
charging
interface
output
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黄呈武
李易燃
刘邦
廖政伟
彭维峰
杨铁利
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Ningbo Junsheng New Energy Research Institute Co ltd
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Ningbo Junsheng New Energy Research Institute Co ltd
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10—Technologies relating to charging of electric vehicles
    • Y02T90/12—Electric charging stations

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Abstract

The utility model discloses an electric automobile direct current charging system, which comprises a charging pile alternating current input module, a charging pile direct current output module and a plurality of power modules for converting alternating current into direct current; in a first mode: each power module is detachably connected between the charging pile alternating current input module and the charging pile direct current output module, and the power modules, the charging pile alternating current input module and the charging pile direct current output module are used for carrying out direct current charging on the electric automobile as a whole; in a second mode: the single power module is connected between an external alternating current power supply and an automobile battery charging interface to carry out direct current charging on the electric automobile; the charging method has the advantages that the user can select different charging modes according to the requirements of different charging scenes so as to relieve charging anxiety; and can also be selected for power when used as a whole; therefore, the charging convenience is improved, and meanwhile, the purchase cost of the charging equipment of the electric automobile user is reduced.

Description

Direct current charging system for electric automobile
Technical Field
The utility model relates to an electric automobile technical field that charges especially relates to an electric automobile direct current charging system.
Background
The main power supply modes of the electric automobile comprise alternating current slow charging, high-power direct current fast charging, wireless charging, battery replacement, vehicle-mounted emergency charging and the like, the charging modes can only solve charging in a fixed scene singly, and the charging modes have some defects more or less and restrict the further industrial development of the electric automobile.
For example, two sets of devices, namely a public alternating-current charging pile and a vehicle-mounted charger, are required to be used for alternating-current slow charging, the vehicle-mounted charger occupies the layout space of the whole vehicle and is complex in development, the number of the public slow charging piles cannot meet the use requirement, the charging time is too long, and the operation and management cost is high.
In contrast, although the charging speed of the high-power direct-current quick charging is improved, the problem still exists. Firstly, fill electric pile quantity construction and can not satisfy the demand far away. Secondly, because the brand is different, charging power also differs, leads to the car to look for the electric pile that fills that the power matches and charge.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that an electric automobile direct current charging system with multiple charging mode is provided.
The utility model provides a technical scheme that above-mentioned technical problem adopted does: electric automobile direct current charging system includes:
the charging pile AC input module comprises a main AC input interface and at least one sub AC output interface which are used for being connected with an AC power supply;
the charging pile direct-current output module comprises at least one sub direct-current input interface, a total direct-current output interface used for being connected with an automobile battery charging interface in a pluggable mode, and a power distribution unit connected between the at least one sub direct-current input interface and the total direct-current output interface;
at least one power module comprising an AC to DC converter circuit, a first sub AC input interface and a sub DC output interface; the first sub alternating current input interface is connected with the sub alternating current output interface of the charging pile alternating current input module in a pluggable mode in a first mode; the first sub alternating current input interface is connected with the first alternating current power supply interface in a pluggable mode in the second mode; the sub direct current output interface is connected with the direct current dividing input interface of the charging pile direct current output module in a pluggable mode in the first mode; the sub direct current output interface is connected with the charging interface of the automobile battery in a pluggable mode in the second mode; the alternating current-to-direct current circuit comprises an input end and an output end; the input end of the alternating current-to-direct current circuit is connected with the first sub alternating current input interface; and the output end of the alternating current-to-direct current circuit is connected with the sub-direct current output interface.
The utility model provides an above-mentioned technical problem adopted preferred technical scheme be: the power distribution unit comprises a hub and a switching circuit; the hub comprises at least one input end and an output end; the input ends of the concentrator correspond to the direct current input interfaces one by one; the input end of the concentrator is connected with the corresponding direct current dividing input interface through the switch circuit; the output end of the concentrator is connected to the total direct current output interface.
The utility model provides an above-mentioned technical problem adopted preferred technical scheme be: the charging pile AC input module also comprises an AC power supply switching unit, and the AC power supply switching unit comprises a three-phase single-phase switching circuit; the three-phase-cut single-phase circuit comprises a single-phase output end; the single-phase output ends are respectively connected to the at least one sub-alternating current output interface.
The utility model provides an above-mentioned technical problem adopted preferred technical scheme be: the alternating current-to-direct current circuit comprises a leakage protection unit, an input filter, a power conversion unit, an output filter and a controller; the input end of the leakage protection unit is the input end of the alternating current-to-direct current circuit; the output end of the leakage protection unit is connected with the input end of the input filter; the power conversion unit comprises a control signal transmission end, an input end and an output end; the output end of the input filter is connected with the input end of the power conversion unit; the output end of the power conversion unit is connected with the input end of the output filter; the controller comprises a control signal transmission end and a power supply input end; the power supply input end of the controller is connected with the power supply output end of the auxiliary power supply; the control signal transmission end of the controller is connected with the control signal transmission end of the power conversion unit; the output end of the output filter is the output end of the alternating current-to-direct current circuit.
The utility model provides an above-mentioned technical problem adopted preferred technical scheme be: the power module further comprises a second sub alternating current input interface; the second sub alternating current input interface is connected with the second alternating current power supply interface in a pluggable mode in the second mode; the input end of the alternating current-to-direct current circuit is also connected with the second sub alternating current input interface.
The utility model provides an above-mentioned technical problem adopted preferred technical scheme be: the output power of each power module is 7KW.
The utility model provides an above-mentioned technical problem adopted preferred technical scheme be: the number of the power modules is 3.
The utility model provides a still another technical scheme who above-mentioned technical problem adopted does: electric automobile direct current charging system includes:
the charging pile comprises a charging pile alternating current input module, a charging pile direct current output module and a plurality of power modules for converting alternating current into direct current;
in a first mode:
each power module is detachably connected between the charging pile alternating current input module and the charging pile direct current output module, and the power modules are connected in parallel;
the charging pile AC input module is connected with an external AC power supply, and the charging pile DC output module is connected with an automobile battery charging interface so as to charge the electric automobile in a DC manner;
in a second mode:
and the single power module is connected between an external alternating current power supply and the automobile battery charging interface to carry out direct current charging on the electric automobile.
The utility model provides a preferred of another technical scheme that above-mentioned technical problem adopted: the charging pile AC input module comprises an AC power supply switching unit, and the AC power supply switching unit is used for adjusting input AC power so as to be compatible with AC power grids with different voltages.
The utility model provides a preferred of another technical scheme that above-mentioned technical problem adopted: the charging pile direct current output module comprises a power distribution unit, and the power distribution unit performs power synthesis on the accessed power modules.
Compared with the prior art, the utility model has the advantages that: the power module can be used independently, can also insert and fill between electric pile AC input module and the electric pile DC output module, and the three uses as a whole to consequently make the user can select different charging modes according to the demand in different scenes of charging, with the anxiety of alleviating charging. And may also be selected for power when used as a whole. Therefore, the charging convenience is improved, and meanwhile, the purchase cost of the charging equipment of the electric automobile user is reduced.
In addition, external direct current charges under various modes, need not to pass through OBC, can save whole car development cost, has reduced the car quality hidden danger, also can use non-car rule level device, reduces the manufacturing cost of each part.
Drawings
The present invention will be described in further detail below with reference to the drawings and preferred embodiments, but those skilled in the art will appreciate that the drawings are only drawn for the purpose of explaining the preferred embodiments, and therefore should not be taken as limiting the scope of the present invention. Furthermore, unless specifically stated otherwise, the drawings are merely schematic representations based on conceptual representations of elements or structures depicted and may contain exaggerated displays and are not necessarily drawn to scale.
Fig. 1 is a schematic diagram of an electric vehicle dc charging system according to a preferred embodiment of the present invention;
fig. 2 is a circuit diagram of the total ac input interface of the preferred embodiment of the present invention;
fig. 3 is a circuit diagram of an ac power supply switching unit according to a preferred embodiment of the present invention;
fig. 4 is a circuit diagram of an ac to dc converter circuit according to a preferred embodiment of the present invention;
fig. 5 is a circuit diagram of a power distribution unit according to a preferred embodiment of the present invention.
Detailed Description
Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Those skilled in the art will appreciate that the description is illustrative only, and is not to be construed as limiting the scope of the invention.
It should be noted that: like reference numerals refer to like items in the following figures, and thus, once an item is defined in one figure, it may not be further defined or explained in subsequent figures.
As shown in fig. 1, the dc charging system for an electric vehicle includes a charging pile ac input module 100, a charging pile dc output module 200, and a plurality of power modules 300 for converting ac power into dc power, where the number of the power modules 300 may be different according to differences of power requirements. The power module 300 may form a single component to realize the charging function, or may be connected to the charging pile ac input module 100 and the charging pile dc output module 200 to form a whole to realize the charging function.
That is to say, the electric vehicle dc charging system has two charging modes of "total" and "branch".
In the first mode, the "total" mode: each power module is detachably connected between the charging pile AC input module and the charging pile DC output module, and the power modules are connected in parallel.
The input end of the charging pile AC input module 100 is connected with an external AC power supply, and the output end of the charging pile DC output module 200 is connected with a charging interface of an automobile battery so as to charge the electric automobile with DC.
In the second mode, the "minute" mode: the single power module 300 is connected between an external ac power source and a vehicle battery charging interface to perform dc charging of the electric vehicle.
Specifically, charging pile ac input module 100 includes a main ac input interface 1 for connecting with an ac power source, an ac input circuit, and at least one sub ac output interface.
The charging pile dc output module 200 includes a total dc output interface 3, sub dc input interfaces equal in number to the sub ac output interfaces, and a dc output circuit. The dc output circuit comprises a power distribution unit connected between each of the sub-dc input interfaces and the main dc output interface 3.
Each power module 300 includes an ac-to-dc converter circuit, a first sub ac input interface for plug connection with the sub ac output interface, and a first sub dc output interface for plug connection with the sub dc input interface, where an input end of the ac-to-dc converter circuit is connected to the first sub ac input interface, and an output end of the ac-to-dc converter circuit is connected to the first sub dc output interface.
When the first sub ac input interface of each power module 300 is in butt joint with the sub ac output interface of the charging pile ac input module 100, the first sub dc output interface is in butt joint with the sub dc input interface of the charging pile dc output module 200, each power module 300 is connected in series between the charging pile ac input module 100 and the charging pile dc output module 200, and the power modules 300 are connected in parallel.
In the figure, a/B/C is a detachable connection point of the power module 300 and the charging pile ac input module 100, namely, a joint point of the sub ac output interface and the first sub ac input interface.
The D/E/F is respectively a detachable connection position of the power module and the charging pile direct current output module 200, namely a butt joint position of the first sub direct current output interface and the sub direct current input interface.
G is a dc standard cable assembly connected to the main dc output interface 3. H represents a commercial power alternating current plug or alternating current socket cable assembly, and I represents a direct current quick connector cable assembly of the electric automobile. The total direct current output interface 3 is connected with the electric automobile M.
That is to say, after the power module 300 is detachably connected between the charging pile ac input module 100 and the charging pile dc output module 200, the electric vehicle dc charging system realizes the integration of the modules. If a plurality of power modules 300 are connected between the charging pile ac input module 100 and the charging pile dc output module 200, the power distribution unit of the charging pile dc output module 200 integrates the power of each power module 300, and the charging pile dc output module 200 outputs the integrated dc power to the outside through the total dc output interface 3.
Of course, the power module 300 may be separated from the charging post ac input module 100 and the charging post dc output module 200 to be used as an independent dc slow charging module.
It should be noted that, after the power module 300 is separated, the charging can be realized through the first sub ac input interface and the first sub dc output interface. However, because the power supply interface of the ac power grid and the charging interface of the car battery usually have requirements for corresponding interfaces, in order to adapt to the power supply interface of the ac power grid and the charging interface of the car battery, the power module 300 may further be provided with a second sub ac input interface 7 for being connected with the power supply interface of the ac power grid in a pluggable manner, and/or a second dc output interface 8 for being connected with the charging interface of the car battery in a pluggable manner. The input end of the AC-DC conversion circuit is connected to the second AC input sub-interface 7; the output end of the ac-dc converter circuit is connected to the second dc output interface 8.
Preferably, the branch alternating current output interface, the branch direct current input interface and the first sub alternating current input interface, and the first sub direct current output interface and the total direct current output interface are all fast-plugging interfaces. And the second sub ac input interface 7 and the second dc output interface 8 which are additionally provided are also fast socket interfaces.
The second sub ac input interface 7 may be connected to a mains ac plug or ac socket cable assembly to enable power to be drawn from the ac power grid. The second direct current output interface 8 is connected with an electric automobile direct current cable assembly to realize charging of the electric automobile.
It should be noted that the second ac input sub-interface 7 may be combined with the first ac input sub-interface to form a universal interface, and the first ac input sub-interface may also perform the function of connecting to a commercial ac plug or an ac socket cable assembly when the power module is used independently. In the same way, the second dc output interface 8 can be combined with the first sub dc output interface to form a general interface, and the first sub dc output interface can also take the function of connecting the dc cable assembly of the electric vehicle when the power module is used independently. That is to say, whether the second sub ac input interface 7 and the second dc output interface 8 are provided depends on actual requirements.
In one embodiment, the power module is provided with a first sub ac input interface, a second sub ac input interface 7 and a first sub dc output interface. The second sub alternating current input interface 7 is a national standard seven-hole plug. And the first sub direct current output interface is used as an output interface in two modes of integral system charging and independent power module charging.
That is to say that electric automobile direct current charging system can realize that direct current fills fast and direct current fills two kinds of functions slowly through different usage patterns to realize a tractor serves several purposes, according to the demand in different scenes of charging, select the mode of charging in order to alleviate charging anxiety. It is also possible to select the output power of the mother appliance 10 according to the different input powers of different vehicle models. The charging convenience is improved, and meanwhile, the purchase cost of charging equipment of an electric automobile user is reduced.
In addition, it should be noted that the power module realizes direct current charging through an alternating current to direct current circuit, which means that charging can be realized directly by adopting a direct current quick charging port of the electric vehicle without passing through a vehicle-mounted alternating current charging circuit system OBC. And based on the convenience of the system, the anxiety of the common charging pile can be avoided, so that the possibility that the electric automobile is not provided with the vehicle-mounted alternating current charging circuit system OBC is provided, the development cost of the whole automobile can be greatly saved, and the hidden danger of the quality of the automobile is reduced. The power module 300 may be used in non-standard grades, and the production cost is also low.
Preferably, the output power of each power module is 7KW. The number of power modules accessible to the whole system is 3. The number of the sub alternating current output interfaces and the number of the sub direct current input interfaces are three.
As shown in fig. 2, the total ac input interface 1 of the charging pile ac input module 100 includes an ac power supply input end, a fuse F1\ F2\ F3 connected to the ac power supply input end, and an air switch GB1 connected in series with the fuse.
As shown in fig. 1, the ac input circuit of the charging pile ac input module 100 further includes an ac power supply switching unit 11, where the ac power supply switching unit 11 is configured to adjust ac power supplied from the main ac input interface 1 to be compatible with ac power grids with different voltages. Preferably, three ac output interfaces are provided at the output of the ac power supply switching unit 11.
As shown in fig. 3, the ac power supply switching unit 11 includes a three-phase to single-phase circuit; the three-phase-to-single-phase circuit comprises a single-phase output end, a three-phase input end and a switching relay S1\ S2\ S3, wherein the three-phase input end is used for being connected with a three-phase power supply. The single-phase output ends are respectively connected to the sub-alternating current output interfaces 2. For example, a three-phase to single-phase circuit can switch a three-phase 380V alternating current to a single-phase 220V alternating current.
The ac power supply switching unit 11 further includes an auxiliary power supply; the auxiliary power supply comprises a power supply input end and a power supply output end; the positive electrode of the power supply input end of the auxiliary power supply is connected with a first phase line of the three-phase power supply; the negative pole of the power supply input end of the auxiliary power supply is connected with the zero line.
As shown in fig. 4, the ac to dc circuit includes a leakage protection unit, an input filter, a power conversion unit, an output filter, and a controller. The power conversion unit comprises a power factor correction circuit PFC and a DC-DC converter HVDCDC.
The input end of the leakage protection unit is the input end of the alternating current-to-direct current circuit; the output end of the leakage protection unit is connected with the input end of the input filter; the power conversion unit comprises a control signal transmission end, an input end and an output end; the output end of the input filter is connected with the input end of the power conversion unit; the output end of the power conversion unit is connected with the input end of the output filter; the controller comprises a control signal transmission end and a power supply input end; the power supply input end of the controller is connected with the power supply output end of the auxiliary power supply; the control signal transmission end of the controller is connected with the control signal transmission end of the power conversion unit; the output end of the output filter is the output end of the alternating current-to-direct current circuit.
As shown in fig. 5, the power distribution unit 12 of the charging pile dc output module 200 includes a hub and a switching circuit; the concentrator comprises at least one input end and an output end; the input end of the concentrator corresponds to the direct current input interface 6 of the charging pile direct current output module 200 one by one; the input end of the concentrator is connected with the corresponding DC input interface 6 of the charging pile DC output module 200 through a switch circuit; the output of the hub is connected to the total dc output interface 3 of the charging pile dc output module 200.
The switching circuit comprises at least one relay S4\ S5\ S6 which is in one-to-one correspondence with the positive pole of the direct current dividing input interface 6 of the charging pile direct current output module 200 and at least one relay S7\ S8\ S9 which is in one-to-one correspondence with the negative pole of the direct current dividing input interface 6 of the charging pile direct current output module 200; the positive electrode of the direct current input interface 6 of the charging pile direct current output module 200 is connected with the positive electrode of the input end of the corresponding concentrator through the corresponding relay; the negative electrode of the sub-dc input interface 6 of the charging pile dc output module 200 is connected with the negative electrode of the input end of the corresponding concentrator through the corresponding relay.
It is right above the utility model provides an introduce, it is right to have used specific individual example herein the utility model discloses a principle and implementation mode have been elucidated, and the description of above embodiment is only used for helping understanding the utility model discloses and core thought.
It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.

Claims (10)

1. Electric automobile direct current charging system, its characterized in that includes:
the charging pile AC input module comprises a main AC input interface and at least one sub AC output interface which are used for being connected with an AC power supply;
the charging pile direct current output module comprises at least one sub direct current input interface, a total direct current output interface used for being connected with an automobile battery charging interface in a pluggable mode, and a power distribution unit connected between the at least one sub direct current input interface and the total direct current output interface;
at least one power module comprising an AC to DC converter circuit, a first sub AC input interface and a sub DC output interface; the first sub alternating current input interface is connected with the sub alternating current output interface of the charging pile alternating current input module in a pluggable mode in a first mode; the first sub alternating current input interface is connected with the first alternating current power supply interface in a pluggable mode in the second mode; the sub direct current output interface is connected with the direct current dividing input interface of the charging pile direct current output module in a pluggable mode in the first mode; the sub direct current output interface is connected with the charging interface of the automobile battery in a pluggable mode in the second mode; the alternating current-to-direct current circuit comprises an input end and an output end; the input end of the alternating current-to-direct current circuit is connected with the first sub alternating current input interface; and the output end of the alternating current-to-direct current circuit is connected with the sub-direct current output interface.
2. The electric vehicle dc charging system of claim 1, wherein the power distribution unit includes a hub and a switching circuit; the hub comprises at least one input end and an output end; the input ends of the concentrator correspond to the direct current input interfaces one by one; the input end of the concentrator is connected with the corresponding direct current dividing input interface through the switch circuit; the output end of the concentrator is connected to the total direct current output interface.
3. The electric vehicle direct-current charging system according to claim 1, wherein the charging pile alternating-current input module further comprises an alternating-current power supply switching unit, and the alternating-current power supply switching unit comprises a three-phase single-phase switching circuit; the three-phase-cut single-phase circuit comprises a single-phase output end; the single-phase output ends are respectively connected to the at least one sub-alternating current output interface.
4. The electric vehicle dc charging system of claim 3, wherein the ac to dc circuit comprises a leakage protection unit, an input filter, a power conversion unit, an output filter, and a controller; the input end of the leakage protection unit is the input end of the alternating current-to-direct current circuit; the output end of the leakage protection unit is connected with the input end of the input filter; the power conversion unit comprises a control signal transmission end, an input end and an output end; the output end of the input filter is connected with the input end of the power conversion unit; the output end of the power conversion unit is connected with the input end of the output filter; the controller comprises a control signal transmission end and a power supply input end; the power supply input end of the controller is connected with the power supply output end of the auxiliary power supply; the control signal transmission end of the controller is connected with the control signal transmission end of the power conversion unit; the output end of the output filter is the output end of the alternating current-to-direct current circuit.
5. The electric vehicle dc charging system of claim 1, wherein the power module further comprises a second sub ac input interface; the second sub alternating current input interface is connected with the second alternating current power supply interface in a pluggable mode in the second mode; the input end of the alternating current-to-direct current circuit is also connected with the second sub alternating current input interface.
6. The dc charging system of claim 1, wherein the output power of each power module is 7KW.
7. The direct-current charging system for the electric vehicle according to any one of claims 1 to 6, wherein the number of the power modules is 3.
8. Electric automobile direct current charging system, its characterized in that includes:
the charging pile comprises a charging pile alternating current input module, a charging pile direct current output module and a plurality of power modules for converting alternating current into direct current; in a first mode:
each power module is detachably connected between the charging pile alternating current input module and the charging pile direct current output module, and the power modules are connected in parallel;
the charging pile AC input module is connected with an external AC power supply, and the charging pile DC output module is connected with an automobile battery charging interface so as to charge the electric automobile with DC;
in a second mode:
and the single power module is connected between an external alternating current power supply and the automobile battery charging interface to carry out direct current charging on the electric automobile.
9. The direct-current charging system of claim 8, wherein the charging pile alternating-current input module comprises an alternating-current power supply switching unit, and the alternating-current power supply switching unit is used for adjusting input alternating current to be compatible with alternating-current power grids with different voltages.
10. The direct current charging system of claim 8, wherein the charging post direct current output module comprises a power distribution unit, and the power distribution unit performs power synthesis on the connected power modules.
CN202222075627.6U 2022-08-05 2022-08-05 Direct current charging system for electric automobile Active CN217892528U (en)

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Application Number Priority Date Filing Date Title
CN202222075627.6U CN217892528U (en) 2022-08-05 2022-08-05 Direct current charging system for electric automobile

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Application Number Priority Date Filing Date Title
CN202222075627.6U CN217892528U (en) 2022-08-05 2022-08-05 Direct current charging system for electric automobile

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CN217892528U true CN217892528U (en) 2022-11-25

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