CN215817554U - Energy storage direct current charging device - Google Patents

Energy storage direct current charging device Download PDF

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Publication number
CN215817554U
CN215817554U CN202122062018.2U CN202122062018U CN215817554U CN 215817554 U CN215817554 U CN 215817554U CN 202122062018 U CN202122062018 U CN 202122062018U CN 215817554 U CN215817554 U CN 215817554U
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China
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unit
module
energy storage
electric energy
signal receiving
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CN202122062018.2U
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Chinese (zh)
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李继生
马延俊
康利平
穆吉庆
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Xi'an Superfine Electronic Technology Co ltd
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Xi'an Superfine Electronic Technology 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy
    • Y02E10/56—Power conversion systems, e.g. maximum power point trackers
    • 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
    • Y02E40/50—Arrangements for eliminating or reducing asymmetry in polyphase networks
    • 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E70/00—Other energy conversion or management systems reducing GHG emissions
    • Y02E70/30—Systems combining energy storage with energy generation of non-fossil origin
    • 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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  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

The utility model discloses an energy storage direct current charging device, which belongs to the technical field of photovoltaic energy storage charging, and can realize intelligent scheduling and switching according to different working environments and scenes by mutual matching of a bidirectional conversion module, an electric energy exchanger, a processor, a convergence module and an energy storage module, thereby achieving reasonable scheduling of electric energy and avoiding impact on a power grid.

Description

Energy storage direct current charging device
Technical Field
The utility model relates to the technical field of photovoltaic energy storage charging, in particular to an energy storage direct current charging device.
Background
At present, with the rapid development of electric automobile industry in China, the charging pile serving as an electric automobile infrastructure is also driven to grow at a high speed. The charging pile can be seen everywhere in a city, the charging requirements of vast users are facilitated, and meanwhile, the upgrading and the development of the emerging strategic industry of the country are promoted. However, it is undeniable that a large number of charging piles are used simultaneously or unevenly, so that a large impact is caused to a power grid, and particularly in old urban areas, the capacity of the power grid is limited, so that the power grid may be broken down. The utility model aims at solving the problem that a large amount of charging facilities are used to cause impact on a power grid, and provides a charging pile device with a storage function, and the charging pile device has the functions of peak regulation and valley filling and has the purposes of the power grid. The intelligent power grid regulation system can effectively relieve the power grid regulation pressure and promote the power grid to develop towards the intelligent regulation direction.
The principle of traditional direct current stake of charging does: the alternating current electric energy is directly obtained from a power grid, the alternating current electric energy is converted into direct current electric energy through the conversion unit, then the charged electric energy is converted into different power and states required by the electric automobile, and the electric energy is transmitted to the electric automobile until the electric automobile is full. Meanwhile, the whole charging process is monitored through the control box, so that the safety of the charging process is ensured, and the like.
However, the electric energy of the traditional direct current charging pile system is directly taken from the power grid, and the electric energy is multiplied along with the increase of vehicles of the electric automobile, that is to say, the traditional direct current charging pile has great poking property to the electric energy demand, and if the wave peak meets the power grid power consumption peak, the inconvenience is brought to the power grid regulation.
Therefore, in order to solve the problem that the power consumption of the conventional dc charging pile is unbalanced and a large amount of power is used to impact the power grid, how to provide an energy storage dc charging device is a problem that needs to be solved urgently by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides an energy storage direct current charging device, which reasonably schedules electric energy, saves energy, reduces emission, and avoids impact on a power grid.
In order to achieve the purpose, the utility model adopts the following technical scheme:
the utility model provides an energy storage DC charging device, based on municipal power grid, solar PV modules and electric automobile, includes:
the bidirectional conversion module is connected with the commercial power grid and used for taking power from the commercial power grid and transmitting power to the commercial power grid in a grid-connected mode;
the electric energy exchanger is connected with the bidirectional conversion module and is used for converting the flow direction and the power of electric energy;
the processor is connected with the electric energy exchanger and used for controlling the electric energy exchanger to work;
the convergence module is connected with the solar photovoltaic module and used for converging and conveying new energy;
and the energy storage module is connected with the electric energy switch and used for storing and releasing electric energy.
Preferably, the processor comprises: a monitoring unit and a control unit;
the monitoring unit is connected with the commercial power grid and used for monitoring the state of the commercial power grid, recording charging data and sending the charging data to the control unit; the control unit is connected with the monitoring unit, the bidirectional conversion module, the electric energy switch and the convergence module and is used for controlling the bidirectional conversion module, the electric energy switch and the convergence module according to the state of the utility grid.
Preferably, the bidirectional conversion module includes: a drive unit and an AC/DC bidirectional converter unit;
the driving unit is connected with the control unit and the AC/DC bidirectional conversion unit and is used for driving the AC/DC bidirectional conversion unit to act according to the instruction of the control unit; and the alternating current side of the AC/DC bidirectional conversion unit is connected with the commercial power grid, and the direct current side of the AC/DC bidirectional conversion unit is connected with the electric energy exchanger and is used for taking electricity from the commercial power grid and supplying power to the commercial power grid in a grid-connected mode.
Preferably, the power exchanger includes: the device comprises a signal receiving unit, a first input interface, a second input interface, a third input interface, a first output interface, a second interface and a third interface;
the signal receiving unit is connected with the control unit and used for receiving a control unit instruction signal and controlling the actions of the first input interface, the second input interface, the third input interface, the first output interface, the second output interface and the third output interface;
the first input interface is connected with the signal receiving unit and the direct current side of the AC/DC bidirectional conversion unit and is used for receiving the electric energy of the AC/DC bidirectional conversion unit through the instruction received by the signal receiving unit;
the second input interface is connected with the signal receiving unit and the bus module and used for receiving the electric energy of the bus module through the instruction received by the signal receiving unit;
the third input interface is connected with the signal receiving unit and the energy storage module and used for receiving the electric energy of the energy storage module through the instruction received by the signal receiving unit;
the first output interface is connected with the signal receiving unit and the direct current side of the AC/DC bidirectional converter unit and used for providing electric energy for a commercial power grid through the instruction received by the signal receiving unit;
the second output interface is connected with the signal receiving unit and the energy storage module and used for providing electric energy for the energy storage module through the instruction received by the signal receiving unit;
the third output interface is connected with the electric automobile and used for providing electric energy for the electric automobile through the instruction received by the signal receiving unit.
Preferably, the bus bar module includes: a confluence unit and a conveying unit;
the convergence unit is connected with the solar photovoltaic assembly and is used for converging electric energy of the solar photovoltaic assembly;
the conveying unit is connected with the confluence unit, the control unit and the second input interface and used for providing electric energy for the electric energy exchanger through a control instruction of the control unit.
Preferably, the energy storage module comprises an energy storage unit and a power transmission unit;
the energy storage unit is connected with the second output interface and used for receiving the electric energy of the electric energy exchanger through the control instruction of the control unit;
the power transmission unit is connected with the third input interface and used for providing electric energy for the electric energy exchanger through the control instruction of the control unit.
According to the technical scheme, compared with the prior art, the energy storage direct current charging device is disclosed and provided, when the power consumption peak period is up, the electric vehicle is charged by using the electric energy stored by the energy storage module, and the impact of the load on a power grid can be reduced. And when the power utilization of the power grid is low, if the weather is bad and the energy storage module is not fully charged, the energy storage module is fully charged to deal with the next load peak. And when the sunlight is sufficient and the energy storage module is not full, the energy storage module is charged. When charging pile is idle and sunlight is sufficient, if the energy storage module is full, grid-connected power generation is realized. According to different working environments and scenes, intelligent scheduling and switching are achieved, so that reasonable scheduling of electric energy is achieved, and impact on a power grid is avoided.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an energy storage dc charging device according to the present invention.
In fig. 1: 1-a bidirectional conversion module, 11-a driving unit and 12-an AC/DC bidirectional conversion unit;
2-electric energy exchanger, 21-signal receiving unit, 22-first input interface, 23-second input interface, 24-third input interface, 25-first output interface, 26-second output interface and 27-third output interface;
3-processor, 31-monitoring unit, 32-control unit;
4-a confluence module, 41-a confluence unit, 42-a conveying unit;
5-energy storage module, 51-energy storage unit and 52-power transmission unit.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The embodiment of the utility model discloses an energy storage direct current charging device, which is based on a municipal power grid, a solar photovoltaic module and an electric automobile and comprises the following components:
the bidirectional conversion module 1 is connected with a commercial power grid and used for taking power from the commercial power grid and transmitting power to the commercial power grid in a grid-connected mode;
the electric energy exchanger 2 is connected with the bidirectional conversion module 1 and is used for converting the flow direction and the power of electric energy;
the processor 3 is connected with the electric energy exchanger 2 and is used for controlling the electric energy exchanger 2 to work;
the confluence module 4 is connected with the solar photovoltaic module and used for collecting and conveying new energy;
and the energy storage module 5 is connected with the electric energy exchanger 2 and used for storing and releasing electric energy.
In a particular embodiment, the processor 3 comprises: a monitoring unit 31 and a control unit 32;
the monitoring unit 31 is connected to the utility grid, and is configured to monitor the state of the utility grid, record charging data, and send the charging data to the control unit 32; the control unit 32 is connected to the monitoring unit 31, the bidirectional conversion module 1, the electric energy exchanger 2, and the bus module 4, and is configured to control the bidirectional conversion module 1, the electric energy exchanger 2, and the bus module 4 according to the state of the utility grid.
In a particular embodiment, the bidirectional conversion module 1 comprises: a driving unit 11 and an AC/DC bidirectional converter unit 12;
the driving unit 11 is connected with the control unit 32 and the AC/DC bidirectional converter unit 12, and is configured to drive the AC/DC bidirectional converter unit 12 to operate according to an instruction of the control unit 32; the AC side of the AC/DC bidirectional converter unit 12 is connected to the utility grid, and the DC side is connected to the power exchanger 2, for taking power from the utility grid and supplying power to the utility grid.
In one embodiment, the power switch 2 includes: a signal receiving unit 21, a first input interface 22, a second input interface 23, a third input interface 24, a first output interface 25, a second output interface 26, and a third output interface 27;
the signal receiving unit 21 is connected to the control unit 32, and is configured to receive an instruction signal from the control unit 32 and control the first input interface 22, the second input interface 23, the third input interface 24, the first output interface 25, the second output interface 26, and the third output interface 27 to operate;
the first input interface 22 is connected to the signal receiving unit 21 and the DC side of the AC/DC bidirectional converting unit 12, and is configured to receive the power of the AC/DC bidirectional converting unit 12 through the instruction received by the signal receiving unit 21;
the second input interface 23 is connected with the signal receiving unit 21 and the bus module 4, and is used for receiving the electric energy of the bus module 4 through the instruction received by the signal receiving unit 21;
the third input interface 24 is connected to the signal receiving unit 21 and the energy storage module 5, and is configured to receive the electric energy of the energy storage module 5 through the instruction received by the signal receiving unit 21;
the first output interface 25 is connected to the signal receiving unit 21 and the DC side of the AC/DC bidirectional converter unit 12, and is configured to provide electric energy to the utility grid through the instruction received by the signal receiving unit 21;
the second output interface 26 is connected to the signal receiving unit 21 and the energy storage module 5, and is configured to provide electric energy for the energy storage module 5 through the instruction received by the signal receiving unit 21;
the third output interface 27 is connected to the electric vehicle, and is used for providing power for the electric vehicle through the command received by the signal receiving unit 21.
In one embodiment, the bus bar module 4 includes: a confluence unit 41 and a conveyance unit 42;
the converging unit 41 is connected with the solar photovoltaic module and is used for converging electric energy of the solar photovoltaic module;
the delivery unit 42 is connected to the confluence unit 41, the control unit 32, and the second input interface 23, and is configured to provide power to the power exchanger 2 through a control command of the control unit 32.
In one embodiment, the energy storage module 5 includes an energy storage unit 51 and a power transmission unit 52;
the energy storage unit 51 is connected to the second output interface 26, and is configured to receive the electric energy of the electric energy exchanger through a control instruction of the control unit 32;
the power transmission unit 52 is connected to the third input interface 24, and is configured to supply power to the power exchanger through a control command of the control unit 32.
The specific working principle is as follows:
the specific working process scene one: and taking power from a power grid to charge the electric automobile. The alternating current electric energy is converted into direct current electric energy through the bidirectional conversion module 1 under the control of the processor 3 and is transmitted to the electric energy exchanger 2, the processor 3 controls the electric energy exchanger 2 to output the power required by the electric automobile, and the electric energy is continuously transmitted continuously until the electric automobile is full.
A specific working process scene two: the solar photovoltaic power generation charges the energy storage battery. The solar photovoltaic modules are connected in series and connected into the converging unit 41, the converging unit 41 converges the electric energy of the solar photovoltaic modules together, the processor 3 controls the conveying unit 42 to input the photovoltaic electric energy to the electric energy exchanger 2, and the processor 3 controls the electric energy exchanger 2 to charge the energy storage module 5 until the energy storage module 5 is full of the electric energy.
A specific working process scene three: the electric energy is stored to charge the electric automobile. The processor 3 controls the electric energy exchanger 2 to output the electric energy stored in the energy storage module 5, and the electric energy is converted and output to charge the electric automobile through the electric energy exchanger 2 until the electric automobile is full.
A specific working process scene four: and taking power from a commercial power grid to charge the energy storage battery. Alternating current electric energy is converted into direct current electric energy after passing through the bidirectional conversion module 1 under the control of the processor 3, the direct current electric energy is transmitted to the electric energy exchanger 2, and the processor 3 controls the electric energy exchanger 2 to output the direct current electric energy to the energy storage module 5 until the energy storage module 5 is fully charged.
A specific working process scene five: solar photovoltaic grid-connected power generation. The processor 3 controls the solar energy transmission electric energy exchanger 2 which is converged by the converging module 4, the processor 3 controls the electric energy converted by the electric energy exchanger 2 to be transmitted to the bidirectional conversion module 1, and the converted electric energy is converted into alternating current electric energy by the bidirectional conversion module 1 and is merged into a city power grid.
According to the technical scheme, the scene one and the scene two are working scenes of the utility model under the conditions of balanced power grid load and under the condition that the energy storage battery pack is not fully charged. And in the power utilization peak period, the working scene is switched to a scene three working mode, and the stored electric energy is used for charging the electric automobile, so that the impact of the load on a power grid can be reduced. In the power grid electricity utilization valley, if the weather is bad and the energy storage module 5 is not fully charged, the working scene four can be started to fully charge the energy storage battery so as to deal with the next load peak. And at the moment of sufficient sunlight, the energy storage module 5 is not fully filled, and the second working scene is started to charge the energy storage module 5. When charging pile is idle, and when the weather is good and the sunshine is sufficient, and the energy storage module is full of, the working scene can be started, and grid-connected power generation is realized. The utility model can realize five working scenes, thereby intelligently scheduling and switching the electric energy, achieving the technical effects of reasonably scheduling the electric energy and avoiding impacting a power grid.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (6)

1. The utility model provides an energy storage DC charging device, is based on municipal power grid, solar PV modules and electric automobile, its characterized in that includes:
the bidirectional conversion module (1) is connected with the commercial power grid;
the electric energy exchanger (2) is connected with the bidirectional conversion module (1);
the processor (3) is connected with the electric energy exchanger (2);
the confluence module (4) is connected with the solar photovoltaic module;
and the energy storage module (5) is connected with the electric energy exchanger (2).
2. An energy storage dc charging apparatus according to claim 1, wherein the processor (3) comprises: a monitoring unit (31) and a control unit (32);
wherein the monitoring unit (31) is connected to the utility grid; the control unit (32) is connected with the monitoring unit (31), the bidirectional conversion module (1), the electric energy exchanger (2) and the confluence module (4).
3. An energy storage dc charging device according to claim 2, wherein said bidirectional conversion module (1) comprises: a drive unit (11) and an AC/DC bidirectional converter unit (12);
wherein the drive unit (11) is connected with the control unit (32) and the AC/DC bidirectional conversion unit (12); the alternating current side of the AC/DC bidirectional conversion unit (12) is connected with the commercial power grid, and the direct current side is connected with the electric energy exchanger (2).
4. An energy storage dc charging apparatus according to claim 3, wherein the power exchanger (2) comprises: a signal receiving unit (21), a first input interface (22), a second input interface (23), a third input interface (24), a first output interface (25), a second output interface (26), and a third output interface (27);
wherein the signal receiving unit (21) is connected to the control unit (32), the first input interface (22) is connected with the signal receiving unit (21) and the direct current side of the AC/DC bidirectional conversion unit (12), the second input interface (23) is connected to the signal receiving unit (21) and the bus module (4), the third input interface (24) is connected with the signal receiving unit (21) and the energy storage module (5), the first output interface (25) is connected with the signal receiving unit (21) and the direct current side of the AC/DC bidirectional conversion unit (12), the second output interface (26) is connected with the signal receiving unit (21) and the energy storage module (5), the third output interface (27) is connected with the signal receiving unit (21) and the electric vehicle.
5. An energy storing dc charging device according to claim 4, wherein the bus module (4) comprises: a confluence unit (41) and a conveying unit (42);
the confluence unit (41) is connected with the solar photovoltaic module, and the conveying unit (42) is connected with the confluence unit (41), the control unit (32) and the second input interface (23).
6. An energy-storing DC charging device according to claim 4, characterized in that the energy-storing module (5) comprises an energy-storing unit (51) and a power-transmitting unit (52);
the energy storage unit (51) is connected to the second output interface (26), and the power transmission unit (52) is connected to the third input interface (24).
CN202122062018.2U 2021-08-30 2021-08-30 Energy storage direct current charging device Active CN215817554U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202122062018.2U CN215817554U (en) 2021-08-30 2021-08-30 Energy storage direct current charging device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202122062018.2U CN215817554U (en) 2021-08-30 2021-08-30 Energy storage direct current charging device

Publications (1)

Publication Number Publication Date
CN215817554U true CN215817554U (en) 2022-02-11

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Family Applications (1)

Application Number Title Priority Date Filing Date
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Country Status (1)

Country Link
CN (1) CN215817554U (en)

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PE01 Entry into force of the registration of the contract for pledge of patent right

Denomination of utility model: A DC charging device for energy storage

Effective date of registration: 20230712

Granted publication date: 20220211

Pledgee: Xi'an innovation financing Company limited by guarantee

Pledgor: XI'AN SUPERFINE ELECTRONIC TECHNOLOGY Co.,Ltd.

Registration number: Y2023610000553