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CN213056752U - V2G direct current fills electric pile - Google Patents

V2G direct current fills electric pile Download PDF

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Publication number
CN213056752U
CN213056752U CN202021724563.2U CN202021724563U CN213056752U CN 213056752 U CN213056752 U CN 213056752U CN 202021724563 U CN202021724563 U CN 202021724563U CN 213056752 U CN213056752 U CN 213056752U
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CN
China
Prior art keywords
charging
battery
controller
circuit
discharging
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CN202021724563.2U
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Chinese (zh)
Inventor
戴诚
杜凡平
冷鹏飞
冷鹏程
蒋小丹
尹青
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jiangsu Huapeng Intelligent Instrument Technology Co ltd
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Jiangsu Huapeng Intelligent Instrument Technology Co ltd
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Priority to CN202021724563.2U priority Critical patent/CN213056752U/en
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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
    • 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
    • Y02T90/16—Information or communication technologies improving the operation of electric vehicles

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  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

The utility model discloses a V2G DC charging pile, which comprises a charging and discharging main circuit, a controller, a charging module and a payment module, wherein the charging and discharging main circuit is respectively connected with a power grid and a battery of an electric automobile; the controller is connected with the charging and discharging main circuit and is suitable for controlling the charging and discharging main circuit to serve as a charging circuit so that electricity in a power grid can be charged into the battery through the charging circuit; or the charging and discharging circuit is controlled to be used as a discharging circuit so that the electricity in the battery returns to the power grid through the discharging circuit; the charging module is respectively connected with the charging and discharging main circuit and the controller and is suitable for charging the charging cost and the electricity selling cost of the battery; and transmitting the charging result to the controller; the controller is also connected with the payment module and is also suitable for charging or paying the user through the payment module according to the charging result. The utility model discloses a direct current quick charge mode charges to the battery, and charging efficiency is high, can feed back unnecessary electric energy to the electric wire netting, has both alleviated the pressure of internal power consumption, can bring economic benefits for the car owner again.

Description

V2G direct current fills electric pile
Technical Field
The utility model relates to a V2G direct current fills electric pile.
Background
Electric vehicles are popular among people due to the characteristics of low carbon, low noise, low operation cost, easy maintenance and the like, and the requirements of electric vehicles are increasing day by day. The research and development of the charging pile are very important when the electric vehicle industry is rapidly developed. The electric energy of can not realizing returning to the net mostly in current electric pile of filling has a great deal of drawback.
Disclosure of Invention
The utility model aims to solve the technical problem that overcome prior art's defect, provide a V2G direct current and fill electric pile, it can adopt the direct current quick charge mode to charge to electric automobile's battery, and charge efficiency is high, and can feed back unnecessary electric energy to the electric wire netting, also can alleviate the pressure of internal power consumption to a certain extent, in the service vehicle owner, can bring certain economic benefits again for the car owner.
In order to solve the technical problem, the technical scheme of the utility model is that: a V2G dc charging post, comprising:
the charging and discharging main circuit is respectively connected with a power grid and a battery of the electric automobile;
the controller is connected with the charging and discharging main circuit and is suitable for controlling the charging and discharging main circuit to serve as a charging circuit so that the electricity in the power grid can be charged into the battery through the charging circuit; or the charging and discharging circuit is controlled to be used as a discharging circuit so that the electricity in the battery returns to the power grid through the discharging circuit;
the charging module is respectively connected with the charging and discharging main circuit and the controller and is suitable for charging the charging cost and the electricity selling cost of the battery; transmitting the charging fee and the electricity selling fee to the controller;
and the controller is also connected with the payment module and is suitable for charging or paying for the user through the payment module according to the charging fee and the electricity selling fee.
Further, the charging module comprises a bidirectional intelligent electric meter;
and/or the payment module comprises a card reader.
Further provided is a concrete structure of a charge and discharge main circuit, the charge and discharge main circuit including:
the alternating current input and output ends of the three-phase voltage type PWM rectifier are connected with the power grid;
and one input and output end of the bidirectional DC/DC converter is connected with the direct current input and output end of the three-phase voltage type PWM rectifier, and the other input and output end of the bidirectional DC/DC converter is connected with the battery.
Further in order to print the bill conveniently, the V2G dc charging pile further includes a printer connected to the controller and adapted to receive the charging result sent by the controller and print the corresponding bill according to the charging result.
Further in order to facilitate man-machine communication, the V2G dc charging pile further includes a man-machine interaction module, which is connected to the controller to implement man-machine communication.
Further in order to detect the battery in the battery charging and discharging process, the V2G direct current charging pile further comprises a battery detection module which is respectively connected with the controller and the battery, is suitable for detecting the battery according to a detection instruction of the controller and sends a detection result to the controller.
Further in order to prolong the service life of the battery, the V2G dc charging pile further comprises a battery maintenance module, which is respectively connected with the controller and the battery and is adapted to compensate the battery in the battery charging process according to the maintenance instruction of the controller so as to slow down the battery decay rate.
Further in order to protect the charging and discharging main circuit, the V2G dc charging pile further includes a protection module connected to the charging and discharging main circuit to protect the charging and discharging main circuit.
Further, the protection module comprises a voltage-limiting surge protector, an over-current relay and a leakage protector.
Further in order to conveniently display the operating state of the V2G dc charging pile, the V2G dc charging pile further includes:
a charging display lamp connected in the charging and discharging main circuit to be turned on when the power grid charges the battery through the charging and discharging main circuit;
and/or a discharge display lamp connected in the charge and discharge main circuit to be turned on when the battery is discharged to the power grid through the charge and discharge main circuit;
further, in order to perform emergency power-off on the V2G charging pile in an emergency, the V2G dc charging pile further comprises an emergency stop button connected in the main charging and discharging circuit to disconnect the main charging and discharging circuit when the emergency stop button is pressed; or it is connected with the controller to trigger the controller to control the main charging and discharging circuit to be disconnected when the controller is pressed.
After the technical scheme is adopted, the utility model discloses following beneficial effect has:
1. the utility model discloses a direct current quick charge mode charges to electric automobile's battery, high charging efficiency, adopt the V2G (electric energy returns to the net when new energy car is idle) technical theory of present owner's promotion again, can obtain the electric energy from the electric wire netting and charge for electric automobile, can feed back the electric energy that electric automobile's battery stored to the electric wire netting again, the user charges electric automobile's battery at the lower power consumption peak period of the electric charge price ratio usually, store abundant electric energy of electric wire netting in electric automobile's battery, can feed back discharge to the electric wire netting at the higher power consumption peak period of electric charge simultaneously, the car owner earns the electric charge difference, not only can alleviate the pressure of electric wire netting power consumption, and can bring certain income, this kind of charge-discharge strategy of cutting and filling valley will produce positive influence to the electric energy configuration of the electric wire netting of our country;
2. the battery detection module of the utility model can detect the battery of the electric automobile in the charging and discharging process, so that the owner can know the battery loss condition conveniently;
3. the battery maintenance module of the utility model can slow down the battery loss to a certain extent;
4. the utility model discloses a printer can implement and print the bill, and the convenience is saved trouble.
Drawings
Fig. 1 is a schematic block diagram of a V2G dc charging pile of the present invention;
fig. 2 is a circuit diagram of the charging and discharging main circuit of the present invention.
Detailed Description
In order that the present invention may be more readily and clearly understood, the following detailed description of the present invention is provided in connection with the accompanying drawings.
As shown in fig. 1 and 2, a V2G dc charging pile includes:
a charge and discharge main circuit 1 connected to a power grid 10 and a battery 20 of an electric vehicle, respectively;
a controller 5 connected to the main charging and discharging circuit 1 and adapted to control the main charging and discharging circuit 1 as a charging circuit so that electricity in the power grid 10 is charged into the battery 20 through the charging circuit; or controlling the charging and discharging circuit as a discharging circuit to make the electricity in the battery 20 return to the power grid 10 through the discharging circuit;
a charging module 2, which is respectively connected with the charging and discharging main circuit 1 and the controller 5 and is suitable for charging the charging fee and the electricity selling fee of the battery 20; and transmits the charge fee and the electricity selling fee to the controller 5;
the payment module 3, the controller 5 is also connected with the payment module 3, and is also suitable for charging or paying for the user through the payment module 3 according to the charging fee and the electricity selling fee.
In this embodiment, the charging module 2 adopts a bidirectional smart meter; the controller 5 adopts an STM32 singlechip; the payment module 3 adopts a card reader, the card reader adopts an ZLG600A card reader, the card reader adopts an RS232 interface to communicate with an STM32 singlechip, the card reading operation can be carried out on the IC card of a user only by adopting serial port operation, the working frequency of the ZLG600A card reader is 13.56mhz, the card reader supports various contact and non-contact IC cards, can work in various severe outdoor environments, and has reliability. When the charging pile charges the battery 20 of the electric automobile or the battery 20 of the electric automobile discharges the charging pile, the controller 5 is connected with a Battery Management System (BMS) of the electric automobile through a CAN (controller area network) line for communication, and the controller 5 determines the starting and stopping of the charging or discharging process through the communication with the BMS.
Specifically, the utility model discloses a direct current quick charge mode charges to electric automobile's battery 20, high charging efficiency, adopt present V2G (electric energy returns the net when new forms of energy car is idle) technical theory of pushing away again, can obtain the electric energy from the electric wire netting and charge for electric automobile, can feed back the electric energy that electric automobile's battery 20 stored to electric automobile to electric wire netting 10 again, the general user charges electric automobile's battery 20 at the lower power consumption low peak period of electric charge price ratio, store the abundant electric energy of electric wire netting in electric automobile's battery 20, can feed back discharge to electric wire netting 10 at the higher power consumption peak period of electric charge simultaneously, the car owner earns the electric charge differential price, not only can alleviate the pressure of electric wire netting power consumption, and can bring certain income, the positive influence will be produced to the electric energy configuration of the electric wire netting of china to this kind of charge-discharge strategy of cutting filling up the millet.
As shown in fig. 2, the charge and discharge main circuit 1 includes:
a three-phase voltage type PWM rectifier 11 having an ac input/output terminal connected to the grid 10;
the bidirectional DC/DC converter 12 has one input/output terminal connected to the DC input/output terminal of the three-phase voltage-type PWM rectifier 11, and the other input/output terminal connected to the battery 20.
In the present embodiment, the main charging and discharging circuit 1 adopts a three-phase voltage type PWM rectifier 11 as a rectifying circuit, except for facilitating filtering and rectifying the rectified voltage UdBesides the advantage of small pulsation, the rectifier has the characteristics that most rectifiers do not have, can realize the rectification of three-phase alternating current in the positive direction and the inversion of direct current voltage in the reverse direction, and has better steady-state performance and dynamic response than most rectifiers.
When three-phase electricity passesAfter being rectified by a three-phase voltage type PWM rectifier 11, the three-phase voltage type PWM rectifier obtains direct current UDThe bidirectional DC/DC converter 12 is controlled by the controller 5 to become a step-down circuit (buck circuit); through the voltage reduction circuit pair UdAnd after the voltage reduction treatment is carried out, immediately charging the battery of the electric automobile.
When the electric quantity of the battery 20 of the electric automobile is fed back to the power grid 10 through inversion, the controller 5 controls the bidirectional DC/DC converter 12 to become a booster circuit; the voltage of the battery 20 of the electric automobile is boosted to U through the booster circuitd，UdThen, the inverter is performed by a three-phase voltage type PWM rectifier 11 (at this time, the three-phase voltage type PWM rectifier 11 is a three-phase voltage type inverter circuit), and the electric energy stored in the battery 20 is transmitted to the grid 10. Here, the battery 20 in fig. 2 is a battery equivalent diagram.
As shown in fig. 1, in order to print the ticket, the V2G dc charging post further includes a printer 4 connected to the controller 5 and adapted to receive the charging result sent thereto by the controller 5 and print the corresponding ticket according to the charging result.
In the embodiment, the printer 4 is a micro printer, and the bill can be a consumption bill, a charging bill, an invoice and the like.
As shown in fig. 1, in order to facilitate human-computer communication, the V2G dc charging post further includes a human-computer interaction module 6, which is connected to the controller 5 to implement human-computer communication.
In this embodiment, the human-computer interaction module 6 is a touch screen, and a user can check the balance of the IC card through the touch screen and select charging or discharging on the touch screen.
As shown in fig. 1, in order to detect the battery 20 during the charging and discharging processes of the battery 20, the V2G dc charging pile further includes a battery detection module 7, which is respectively connected to the controller 5 and the battery 20, and is adapted to detect the battery 20 according to a detection instruction of the controller 5 and send a detection result to the controller 5. Specifically, the battery detection module 7 facilitates the vehicle owner to know the loss of the battery 20.
As shown in fig. 1, in order to prolong the service life of the battery 20, the V2G dc charging post further includes a battery maintenance module 8, which is respectively connected to the controller 5 and the battery 20 and is adapted to compensate the battery 20 during the charging process of the battery 20 according to the maintenance instruction of the controller 5 to slow down the decay rate of the battery 20.
In this embodiment, battery maintenance module 8 can be with filling the electric pile charging process and compensating, makes the whole reduction of lead sulfate crystal, has slowed down battery 20 decay rate, has increased battery 20 life, and battery maintenance module 8 can constantly reduce the vulcanization area all the time, and under the ideal situation, battery 20 life reaches 10 years. The battery monitoring module 7 and the battery maintenance module 8 may use a module built in IBG75027 of incori corporation.
As shown in fig. 1, in order to protect the charging and discharging main circuit 1, the V2G dc charging pile further includes a protection module 9 connected to the charging and discharging main circuit 1 to protect the charging and discharging main circuit 1.
In this embodiment, the protection module 9 includes a voltage-limiting surge protector, an over-current relay, and a leakage protector.
In this embodiment, in order to conveniently display the operating state of the V2G dc charging post, the V2G dc charging post further includes:
a charge display lamp connected in the charge and discharge main circuit 1 to be turned on when the power grid 10 charges the battery 20 through the charge and discharge main circuit 1;
and a discharge display lamp connected in the charge and discharge main circuit 1 to be turned on when the battery 20 is discharged to the power grid 10 through the charge and discharge main circuit 1.
In the present embodiment, in order to make it possible to perform emergency power-off of the V2G charging post in an emergency, an emergency stop button is connected in the charging and discharging main circuit 1 to make the charging and discharging main circuit 1 open when it is pressed; or it is connected with the controller 5 to trigger the controller 5 to control the main charging and discharging circuit 1 to be disconnected when it is pressed.
The above-mentioned embodiments further explain in detail the technical problems, technical solutions and advantages solved by the present invention, and it should be understood that the above only is a specific embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
In the description of the present invention, it is to be understood that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and do not indicate or imply that the equipment or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the present disclosure, unless otherwise expressly stated or limited, the first feature may comprise both the first and second features directly contacting each other, and also may comprise the first and second features not being directly contacting each other but being in contact with each other by means of further features between them. Also, the first feature being above, on or above the second feature includes the first feature being directly above and obliquely above the second feature, or merely means that the first feature is at a higher level than the second feature. A first feature that underlies, and underlies a second feature includes a first feature that is directly under and obliquely under a second feature, or simply means that the first feature is at a lesser level than the second feature.

Claims (10)

1. A V2G DC charging pile is characterized in that,
it includes:
the charging and discharging main circuit (1) is respectively connected with a power grid (10) and a battery (20) of the electric automobile;
the controller (5) is connected with the charging and discharging main circuit (1) and is suitable for controlling the charging and discharging main circuit (1) to be used as a charging circuit so that electricity in the power grid (10) can be charged into the battery (20) through the charging circuit; or controlling the charging and discharging circuit as a discharging circuit so that the electricity in the battery (20) is returned to the power grid (10) through the discharging circuit;
the charging module (2) is respectively connected with the charging and discharging main circuit (1) and the controller (5) and is suitable for charging the charging cost and the electricity selling cost of the battery (20); and transmitting the charging fee and the electricity selling fee to the controller (5);
the controller (5) is also connected with the payment module (3) and is also suitable for charging or paying the user through the payment module (3) according to the charging fee and the electricity selling fee.
2. The V2G DC charging post according to claim 1,
the charging module (2) comprises a bidirectional intelligent ammeter;
and/or the payment module (3) comprises a card reader.
3. The V2G DC charging post according to claim 1,
the charge and discharge main circuit (1) comprises:
a three-phase voltage type PWM rectifier (11), the AC input and output ends of which are connected with the power grid (10);
and one input and output end of the bidirectional DC/DC converter (12) is connected with the direct current input and output end of the three-phase voltage type PWM rectifier (11), and the other input and output end of the bidirectional DC/DC converter is connected with the battery (20).
4. The V2G DC charging post according to claim 1,
the printer (4) is connected with the controller (5) and is suitable for receiving the charging fee and the electricity selling fee sent by the controller (5) and printing a corresponding bill according to the charging fee and the electricity selling fee.
5. The V2G DC charging post according to claim 1,
the system also comprises a human-computer interaction module (6) which is connected with the controller (5) to realize human-computer communication.
6. The V2G DC charging post according to claim 1,
the battery detection module (7) is respectively connected with the controller (5) and the battery (20), is suitable for detecting the battery (20) according to a detection instruction of the controller (5), and sends a detection result to the controller (5).
7. The V2G DC charging post according to claim 1,
the battery maintenance system further comprises a battery maintenance module (8) which is respectively connected with the controller (5) and the battery (20) and is suitable for compensating the battery (20) in the charging process of the battery (20) according to the maintenance instruction of the controller (5) so as to slow down the decay speed of the battery (20).
8. The V2G DC charging post according to claim 1,
the protection device also comprises a protection module (9) which is connected with the charging and discharging main circuit (1) to protect the charging and discharging main circuit (1).
9. The V2G DC charging post according to claim 8,
the protection module (9) comprises a voltage-limiting surge protector, an over-current relay and a leakage protector.
10. The V2G DC charging post according to claim 1,
further comprising:
a charging display lamp connected in the charging and discharging main circuit (1) to be turned on when the power grid (10) charges the battery (20) through the charging and discharging main circuit (1);
and/or a discharge display lamp connected in the charging and discharging main circuit (1) to be turned on when the battery (20) is discharged to the power grid (10) through the charging and discharging main circuit (1);
and/or an emergency stop button connected in the main charge-discharge circuit (1) to cause the main charge-discharge circuit (1) to be disconnected when it is pressed; or the controller is connected with the controller (5) to trigger the controller (5) to control the main charging and discharging circuit (1) to be disconnected when the controller is pressed.
CN202021724563.2U 2020-08-18 2020-08-18 V2G direct current fills electric pile Active CN213056752U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202021724563.2U CN213056752U (en) 2020-08-18 2020-08-18 V2G direct current fills electric pile

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Application Number Priority Date Filing Date Title
CN202021724563.2U CN213056752U (en) 2020-08-18 2020-08-18 V2G direct current fills electric pile

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116454476A (en) * 2023-06-16 2023-07-18 广汽埃安新能源汽车股份有限公司 Battery self-heating system, method, device, storage medium and equipment
CN117984843A (en) * 2024-01-16 2024-05-07 杭州创厦科技有限公司 Electric energy storage integrated charging pile device and system thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116454476A (en) * 2023-06-16 2023-07-18 广汽埃安新能源汽车股份有限公司 Battery self-heating system, method, device, storage medium and equipment
CN117984843A (en) * 2024-01-16 2024-05-07 杭州创厦科技有限公司 Electric energy storage integrated charging pile device and system thereof

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