CN220234208U - AC/DC double bus power exchange station - Google Patents
AC/DC double bus power exchange station Download PDFInfo
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- CN220234208U CN220234208U CN202321772943.7U CN202321772943U CN220234208U CN 220234208 U CN220234208 U CN 220234208U CN 202321772943 U CN202321772943 U CN 202321772943U CN 220234208 U CN220234208 U CN 220234208U
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- 238000012544 monitoring process Methods 0.000 claims description 13
- 230000002457 bidirectional effect Effects 0.000 claims description 10
- 238000006243 chemical reaction Methods 0.000 abstract description 17
- 238000000034 method Methods 0.000 abstract description 13
- 238000010586 diagram Methods 0.000 description 9
- 230000005611 electricity Effects 0.000 description 3
- 230000002349 favourable effect Effects 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 239000004566 building material Substances 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 206010033799 Paralysis Diseases 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 210000000078 claw Anatomy 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 229910001386 lithium phosphate Inorganic materials 0.000 description 1
- 230000008707 rearrangement Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- TWQULNDIKKJZPH-UHFFFAOYSA-K trilithium;phosphate Chemical compound [Li+].[Li+].[Li+].[O-]P([O-])([O-])=O TWQULNDIKKJZPH-UHFFFAOYSA-K 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
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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
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
Abstract
The utility model discloses an alternating current/direct current double-bus power exchange station, which comprises an alternating current bus and a direct current bus; the AC/DC double-bus power station also comprises an AC transformer electrically connected between a power supply grid and the AC bus, a grid-connected switch electrically connected between the AC transformer and the AC bus, a plurality of AC/DC converters electrically connected between the AC bus and the DC bus, a plurality of DC converters electrically connected with the DC bus, and a plurality of batteries respectively electrically connected with the DC converters; wherein a plurality of the ac/dc converters are connected in parallel between the ac bus and the dc bus. By adopting the technical scheme, the charging power of the AC/DC double-bus power exchange station can be flexibly configured, the conversion efficiency of the AC/DC converter is improved, and the energy loss in the energy conversion process is reduced.
Description
Technical Field
The utility model relates to the technical field of new energy automobile power conversion, in particular to an AC/DC double-bus power conversion station.
Background
Along with popularization of new energy automobiles, how to effectively and rapidly solve the charging and the changing of the new energy automobiles becomes the most attention-paid problem at present.
The conventional power exchange station needs to convert alternating current electric energy into direct current electric energy during working, as shown in fig. 1, the electric energy has larger energy loss during the conversion and transportation processes, the operation cost of the power exchange station can be increased, and the operation and development of the power exchange station are not facilitated.
Therefore, how to reduce the energy loss of the power exchange station and the operation cost of the power exchange station is of great importance to the actual operation of the power exchange station.
Disclosure of Invention
The utility model provides an alternating current/direct current double-bus power exchange station, which is used for reducing the energy loss of the power exchange station and reducing the operation cost of the power exchange station.
According to the present utility model there is provided an ac/dc double busbar power station comprising: an ac bus and a dc bus;
the AC/DC double-bus power station also comprises an AC transformer electrically connected between a power supply grid and the AC bus, a grid-connected switch electrically connected between the AC transformer and the AC bus, a plurality of AC/DC converters electrically connected between the AC bus and the DC bus, a plurality of DC converters electrically connected with the DC bus, and a plurality of batteries respectively electrically connected with the DC converters;
wherein a plurality of the ac/dc converters are connected in parallel between the ac bus and the dc bus.
Optionally, the ac/dc double bus power station includes a plurality of the ac transformers;
a plurality of the alternating current transformers are connected in parallel between the power supply grid and the alternating current bus; the power supply grid is electrically connected with the alternating current bus through each alternating current transformer.
Optionally, the method further comprises: a power exchange robot and a power exchange station monitoring system which are respectively and electrically connected with the alternating current bus;
the AC/DC converter comprises a bidirectional AC/DC converter;
the DC converter includes a bi-directional DC converter.
Optionally, the device further comprises a UPS power supply;
the battery replacement station monitoring system is electrically connected with the alternating current bus through the UPS.
Optionally, the ac/dc converter further includes a unidirectional ac/dc converter; the DC converter further comprises a unidirectional DC converter.
Optionally, the method further comprises: a charging device;
the charging device is electrically connected with the alternating current bus.
Optionally, the method further comprises: a photovoltaic system;
the photovoltaic system is electrically connected with the direct current bus.
Optionally, the sum of the maximum charging powers of the plurality of batteries is greater than or equal to the maximum generated power of the photovoltaic system.
Optionally, the photovoltaic system comprises a photovoltaic curtain wall located at the ac/dc double-bus power exchange station.
Optionally, the photovoltaic system comprises a solar panel located at the top of the building of the ac/dc double bus bar exchange station.
According to the technical scheme, the alternating current bus and the direct current bus are arranged, and the plurality of alternating current/direct current converters connected in parallel are arranged between the alternating current bus and the direct current bus, so that the charging power of the alternating current/direct current double-bus power conversion station can be flexibly configured, the alternating current/direct current converters work in a full-load state, the conversion efficiency of the alternating current/direct current converters is improved, and the energy loss in the energy conversion process is reduced; in addition, through setting up a plurality of alternating current/direct current converters of parallel connection between alternating current busbar and direct current busbar, need not to set up the alternating current/direct current converter of great rated power according to traditional single way alternating current/direct current conversion, can reduce the hardware cost of alternating current/direct current converter, be favorable to reducing the hardware cost and the maintenance cost of alternating current/direct current double busbar power station.
It should be understood that the description in this section is not intended to identify key or critical features of the embodiments of the utility model or to delineate the scope of the utility model. Other features of the present utility model will become apparent from the description that follows.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a prior art AC/DC double bus bar power exchange station;
FIG. 2 is a schematic structural diagram of an AC/DC double bus power exchange station according to an embodiment of the present utility model;
FIG. 3 is a schematic diagram of another alternative AC/DC double bus power station according to an embodiment of the present utility model;
FIG. 4 is a schematic diagram of another alternative AC/DC double bus power station according to an embodiment of the present utility model;
fig. 5 is a schematic structural diagram of another ac/dc double bus power exchange station according to an embodiment of the present utility model.
Detailed Description
In order that those skilled in the art will better understand the present utility model, a technical solution in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present utility model without making any inventive effort, shall fall within the scope of the present utility model.
It should be noted that the terms "comprises" and "comprising," along with any variations thereof, in the description and claims of the present utility model are intended to cover a non-exclusive inclusion, such as a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed or inherent to such process, method, article, or apparatus.
All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without making any inventive effort are intended to fall within the scope of the present utility model. The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the drawings in the embodiments of the present utility model.
Fig. 2 is a schematic structural diagram of an ac/dc double bus power exchange station according to an embodiment of the present utility model. Referring to fig. 2, the ac/dc double bus power station includes an ac bus 01 and a dc bus 02; the ac/dc double bus power station further includes an ac transformer 110 electrically connected between the power grid and the ac bus 01, a grid-connected switch 120 electrically connected between the ac transformer 110 and the ac bus 01, a plurality of ac/dc converters 210 electrically connected between the ac bus and the dc bus, a plurality of dc converters 310 electrically connected to the dc bus 02, and a plurality of batteries 320 electrically connected to the dc converters 310, respectively. Wherein, a plurality of ac/dc converters 210 are connected in parallel between ac bus 01 and dc bus 02.
Wherein the grid-tie switch 120 is a tie-down switch, including but not limited to a relay, connecting the ac transformer 110 and the ac bus 01. The AC/DC converter 210 includes an AC/DC converter, and can convert AC power of the AC bus 01 into DC power and transmit the DC power to the DC bus 02. The DC converter 310 includes a DC/DC converter, and can convert the DC power of the DC bus 02 into a voltage suitable for charging the battery 320, and transmit the voltage to the battery 320 to charge the battery 320. The battery 320 includes a ternary lithium battery, a lithium phosphate battery, and other batteries with higher energy density, and is used for replacing the battery with insufficient power in the new energy automobile.
For example, the power supply grid may provide 10KV of ac, the ac transformer 110 may convert the 10KV of ac into 0.4KV of ac, and form an ac bus 01 at the 0.4KV side, where the input terminals of the multiple ac/dc converters 210 are electrically connected to the ac bus 01, and the output terminals of the multiple ac/dc converters 210 are electrically connected to the dc bus 02. The total power of the ac/dc converters 210 is matched with the power of the ac/dc double bus power station when the power consumption peak is high, the power of the ac/dc converters 210 can be flexibly configured according to the power consumption of the ac/dc double bus power station, for example, when the power consumption of the ac/dc double bus power station is high, a larger number of ac/dc converters 210 are started, and when the power consumption of the ac/dc double bus power station is low, a smaller number of ac/dc converters 210 are started, so that the ac/dc converters 210 can work in a full load state, the conversion efficiency of the ac/dc converters 210 is improved, and the large energy loss caused by the large difference between the working power and rated power of the ac/dc converters 210 is avoided. The operating power refers to the charging power of the ac/dc converter 210 in the actual operating process, and the rated power refers to the optimal power of the ac/dc converter 210 when operating.
According to the embodiment of the utility model, the charging power of the AC/DC double-bus power conversion station can be flexibly configured by arranging the AC bus and the DC bus and arranging the plurality of AC/DC converters connected in parallel between the AC bus and the DC bus, so that the AC/DC converters work in a full-load state, the conversion efficiency of the AC/DC converters is improved, and the energy loss in the energy conversion process is reduced; in addition, through setting up a plurality of alternating current/direct current converters of parallel connection between alternating current busbar and direct current busbar, need not to set up the alternating current/direct current converter of great rated power according to traditional single way alternating current/direct current conversion, can reduce the hardware cost of alternating current/direct current converter, be favorable to reducing the hardware cost and the maintenance cost of alternating current/direct current double busbar power station.
In an alternative embodiment, the grid-connected switch can be turned on when the power supply grid is electrified and turned off when the power supply grid is deenergized, so that on one hand, the sudden electrification of the power supply grid can be avoided, and the damage to equipment in the AC/DC double-bus power exchange station can be avoided; on the other hand, when the power supply grid is powered off, the electric leakage of the AC/DC double-bus exchange station to the power supply grid can be avoided, and other equipment connected with the power supply grid consumes the electric energy stored in the battery in the AC/DC double-bus exchange station, so that the energy consumption of the AC/DC double-bus exchange station can be reduced.
Optionally, fig. 3 is a schematic structural diagram of another ac/dc double bus power exchange station according to an embodiment of the present utility model. Referring to fig. 3, the ac/dc double bus bar power station includes a plurality of ac transformers 110; a plurality of ac transformers 110 are connected in parallel between the power supply grid and the ac bus 01; the power supply grid is electrically connected to the ac bus 01 through each ac transformer 110, and the ac transformer 110 is electrically connected to the ac bus 01 through the grid-connected switch 120.
For example, when the plurality of batteries 320 are charged simultaneously and the charging power is larger, or when the power of the ac/dc double-bus power exchange station for reversely supplying power to the power supply grid is larger, the power to be transmitted between the power supply grid and the ac bus 01 is larger, and the single ac transformer 110 cannot meet the requirement, at this time, the power transmission with larger power can be realized through the plurality of ac transformers 110, so that the ac/dc double-bus power exchange station has larger charging power, and the plurality of batteries 320 can be filled in a short time, thereby improving the charging efficiency and applicability of the ac/dc double-bus power exchange station; in addition, the ac transformer 110 can be flexibly configured, so that the ac transformer 110 works in a full load state, and the transmission efficiency is improved; the power rating of the individual ac transformers 110 may also be reduced, reducing hardware costs.
In addition, a plurality of ac transformers 110 connected in parallel can be provided for redundancy design, when one ac transformer 110 fails, other ac transformers 110 without failure can be used, so that the ac/dc double bus power station can still work normally, the situation that only a single ac transformer 110 is provided and the ac bus is powered off due to failure is avoided, and thus, the reliability of the ac/dc double bus power station can be improved.
Optionally, fig. 4 is a schematic structural diagram of another ac/dc double bus power exchange station according to an embodiment of the present utility model. Referring to fig. 4, the ac/dc converter 210 includes a bi-directional ac/dc converter 220; the dc converter 310 includes a bi-directional dc converter 330.
For example, when the power supply grid is powered off, the electric energy in the battery 320 can be transmitted to the direct current bus 02 and/or the alternating current bus 01 through the bidirectional direct current converter 330 and the bidirectional alternating current/direct current converter 220, so that the normal operation of the alternating current/direct current double bus power station can be continuously ensured, the reliability of the alternating current/direct current double bus power station can be improved when the power supply grid is powered off, the paralysis of the alternating current/direct current double bus power station caused by the termination of power conversion can be avoided, and the hardware cost and the maintenance cost of the alternating current/direct current double bus power station can be reduced; the power of the battery 320 can be used to feed power to the power supply grid, so that stable operation of the power supply grid is ensured when the power consumption of the power supply grid is high.
In addition, when the power supply network is powered off, the electric energy in the battery 320 can also ensure the normal operation of other electric equipment such as an air conditioning system, a lighting system and the like, and ensure the normal operation of the alternating current/direct current double-bus power exchange station. Or, energy conversion between different batteries 320 in the ac/dc double-bus power station can be realized, for example, certain batteries of specific types are lack of electricity, or the batteries 320 of specific types or the battery with the power shortage in the new energy automobile are required to be charged at night, so that different use scenes of the ac/dc double-bus power station can be met, and the compatibility of the ac/dc double-bus power station is improved.
In an alternative embodiment, the ac/dc double bus power station includes a charging device (not shown in the figure), and the charging device is electrically connected to the ac bus, so that the ac power can be converted into dc power, and the battery can be directly charged, and the battery with the power shortage in the new energy automobile can be charged, so that charging in multiple modes can be realized, and compatibility and flexibility of the ac/dc double bus power station are improved.
In addition, the charging equipment can be directly and electrically connected with the alternating current bus, when the power supply grid is powered off, the electric energy stored in the battery can be transmitted to the alternating current bus, and the charging equipment electrically connected with the alternating current bus can continue to work, so that the charging equipment can still continue to operate when the power supply grid is powered off; compared with the traditional scheme, the charging equipment is electrically connected with the power supply grid through the alternating current transformer, the charging equipment is directly electrically connected with the alternating current bus, so that the situation that the charging equipment cannot work when the power supply grid is powered off or the alternating current transformer electrically connected with the charging equipment fails can be avoided, and the reliability of the alternating current/direct current double-bus power exchange station is improved.
In an alternative embodiment, the ac/dc double bus station further comprises a battery exchange robot and a station monitoring system electrically connected to the ac bus, respectively. The power exchange station monitoring system is used for monitoring the running state of the alternating current/direct current double-bus power exchange station. The motor replacing robot comprises mechanical devices such as a mechanical arm and a mechanical claw, and can take out the battery with the power shortage in the new energy automobile and put the battery into the full-power state.
Optionally, the ac/dc double-bus power station further comprises a UPS power source; the battery exchange station monitoring system is electrically connected with the alternating current bus through a UPS power supply.
The UPS power supply comprises a storage battery and an inverter, and can supply the electric energy converted by the alternating-current transformer to the monitoring system of the power exchange station after stabilizing the voltage when the power supply grid is electrified, and charge the built-in storage battery; the UPS power supply can also convert the electric energy of the storage battery into alternating current when the power supply grid is powered off, and supply power to the alternating current/direct current double-bus power station monitoring system, so that the normal operation of the alternating current/direct current double-bus power station monitoring system is maintained, uninterrupted power supply is realized, and the reliability of the alternating current/direct current double-bus power station is improved.
Optionally, with continued reference to fig. 4, the ac/dc converter 210 further includes a unidirectional ac/dc converter 230; dc converter 310 also includes unidirectional dc converter 340.
In this way, the number of bidirectional ac/dc converters 220 and the number of unidirectional ac/dc converters 230 in the ac/dc converter 210, and the number of bidirectional dc converters 330 and the number of unidirectional dc converters 340 in the dc converter 310 can be configured according to the maximum charging power required by the battery 320 when the power grid is powered on and the maximum discharging power required by the battery 320 when the power grid is powered off, so that the setting of too many bidirectional ac/dc converters 220 and bidirectional dc converters 330 is avoided, and the hardware cost is increased; in addition, when the charging power or the discharging power of the battery 320 is changed, the ac/dc converter 210 and the dc converter 310 can be flexibly configured, so that the ac/dc converter 210 and the dc converter 310 both operate in a full load state, the conversion efficiency of the ac/dc converter 210 and the dc converter 310 is improved, and the energy loss is reduced.
Optionally, fig. 5 is a schematic structural diagram of another ac/dc double bus power exchange station according to an embodiment of the present utility model. Referring to fig. 5, the ac/dc double bus power station further comprises a photovoltaic system 03; the photovoltaic system 03 is electrically connected to the dc bus 02.
For example, the battery 320 may be charged by the photovoltaic system 03 when the power grid is de-energized, or when the power grid is unstable due to a peak period of power usage of the power grid. The photovoltaic system 03 may be electrically connected (not shown) to the dc bus 02 via a dc converter to match the voltage of the dc bus 02. During the daytime, the photovoltaic system 03 can charge the battery 320, and the electric energy of the photovoltaic system 03 can be transmitted to the alternating current bus 01 through the bidirectional alternating current/direct current converter 220 to supply power to electric equipment such as a motor replacing robot, a power replacing station monitoring system and the like; at night, the battery 320 can release the electric energy stored in the daytime, supply power to electric equipment such as a power exchange robot, a power exchange station monitoring system and the like, and maintain the power consumption requirement of the alternating current/direct current double-bus power exchange station. Therefore, the power consumption of the power supply grid can be reduced, the energy loss in the energy transportation process is reduced, and the operation cost is reduced.
In addition, when the operation of the ac/dc double bus power exchange station is satisfied, the redundant electric energy in the photovoltaic system 03 can be fed to the power supply grid through the bidirectional ac/dc converter 220 with a certain capacity.
Optionally, the maximum charging power sum of the plurality of batteries is greater than or equal to the maximum generated power of the photovoltaic system. Therefore, the total charging power of a plurality of batteries of the AC/DC double-bus power exchange station is matched with the maximum power generation power of the photovoltaic system, the batteries can be used for storing energy even when the photovoltaic system generates electricity at a peak, the energy loss caused by converting the electric energy of the photovoltaic system into an AC bus is reduced, the electric energy is directly stored in the batteries, and the utilization efficiency of the electric energy can be improved.
Optionally, the photovoltaic system comprises a photovoltaic curtain wall located at the ac/dc double bus power exchange station.
The building structure of the alternating current/direct current double-bus power exchange station can adopt a photovoltaic curtain wall integrated with a photovoltaic building, and the photovoltaic is fused with the depth of the building to be used as a part of the external structure of the building to replace part of building materials and reduce the system cost. The system has the functions of generating electricity, building components and building materials, and can improve the visual effect of a building.
Optionally, the photovoltaic system includes the solar cell panel that is located the building top of exchanging the power station of exchanging of two generating lines of alternating current/direct current, reduces the area of occupation of photovoltaic system, increases the area of solar cell panel under the prerequisite of not increasing the area of occupation of photovoltaic system, is favorable to improving the power generation of photovoltaic system.
Note that the above is only a preferred embodiment of the present utility model and the technical principle applied. It will be understood by those skilled in the art that the present utility model is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the utility model. Therefore, while the utility model has been described in connection with the above embodiments, the utility model is not limited to the embodiments, but may be embodied in many other equivalent forms without departing from the spirit or scope of the utility model, which is set forth in the following claims.
Claims (10)
1. An ac/dc double bus bar power exchange station, comprising: an ac bus and a dc bus;
the AC/DC double-bus power station also comprises an AC transformer electrically connected between a power supply grid and the AC bus, a grid-connected switch electrically connected between the AC transformer and the AC bus, a plurality of AC/DC converters electrically connected between the AC bus and the DC bus, a plurality of DC converters electrically connected with the DC bus, and a plurality of batteries respectively electrically connected with the DC converters;
wherein a plurality of the ac/dc converters are connected in parallel between the ac bus and the dc bus.
2. The ac/dc double bus bar exchange station of claim 1 wherein said ac/dc double bus bar exchange station comprises a plurality of said ac transformers;
a plurality of the alternating current transformers are connected in parallel between the power supply grid and the alternating current bus; the power supply grid is electrically connected with the alternating current bus through each alternating current transformer.
3. The ac/dc double bus bar power plant of claim 1, further comprising: a power exchange robot and a power exchange station monitoring system which are respectively and electrically connected with the alternating current bus;
the AC/DC converter comprises a bidirectional AC/DC converter;
the DC converter includes a bi-directional DC converter.
4. An ac/dc double bus bar exchange according to claim 3 further comprising a UPS power source;
the battery replacement station monitoring system is electrically connected with the alternating current bus through the UPS.
5. An ac/dc double bus bar exchange according to claim 3 wherein the ac/dc converter further comprises a unidirectional ac/dc converter; the DC converter further comprises a unidirectional DC converter.
6. An ac/dc double bus bar exchange according to claim 3, further comprising: a charging device;
the charging device is electrically connected with the alternating current bus.
7. An ac/dc double bus bar exchange according to claim 3, further comprising: a photovoltaic system;
the photovoltaic system is electrically connected with the direct current bus.
8. The ac/dc double bus bar power plant of claim 7 wherein the sum of the maximum charge powers of a plurality of said batteries is greater than or equal to the maximum generated power of said photovoltaic system.
9. The ac/dc double bus bar exchange station of claim 7 wherein the photovoltaic system comprises a photovoltaic curtain wall located at the ac/dc double bus bar exchange station.
10. The ac/dc double bus bar exchange station of claim 7 wherein the photovoltaic system comprises a solar panel located on top of a building of the ac/dc double bus bar exchange station.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321772943.7U CN220234208U (en) | 2023-07-07 | 2023-07-07 | AC/DC double bus power exchange station |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321772943.7U CN220234208U (en) | 2023-07-07 | 2023-07-07 | AC/DC double bus power exchange station |
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| CN220234208U true CN220234208U (en) | 2023-12-22 |
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| CN202321772943.7U Active CN220234208U (en) | 2023-07-07 | 2023-07-07 | AC/DC double bus power exchange station |
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- 2023-07-07 CN CN202321772943.7U patent/CN220234208U/en active Active
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