CN112436406A - Mobile energy storage vehicle - Google Patents
Mobile energy storage vehicle Download PDFInfo
- Publication number
- CN112436406A CN112436406A CN202011162024.9A CN202011162024A CN112436406A CN 112436406 A CN112436406 A CN 112436406A CN 202011162024 A CN202011162024 A CN 202011162024A CN 112436406 A CN112436406 A CN 112436406A
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- China
- Prior art keywords
- cable
- vehicle
- energy storage
- electric cabinet
- winch
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/26—Casings; Parts thereof or accessories therefor
- H02B1/52—Mobile units, e.g. for work sites
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/20—Bus-bar or other wiring layouts, e.g. in cubicles, in switchyards
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/26—Casings; Parts thereof or accessories therefor
- H02B1/46—Boxes; Parts thereof or accessories therefor
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G11/00—Arrangements of electric cables or lines between relatively-movable parts
- H02G11/02—Arrangements of electric cables or lines between relatively-movable parts using take-up reel or drum
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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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention discloses a mobile energy storage vehicle, which comprises an energy storage device, a winch device and an electric cabinet; the winch device comprises a cable winch, a stepless speed change motor and a vehicle-mounted cable, wherein the stepless speed change motor can drive the cable winch to rotate, the vehicle-mounted cable is arranged on the cable winch, and one end of the vehicle-mounted cable is connected with the electric cabinet; the electric cabinet is connected with the energy storage device through an internal cable. The mobile energy storage vehicle can effectively reduce the working procedures of on-site cable wiring, and improve the on-site installation efficiency and the use convenience; the connection stability of the vehicle-mounted cable and the electric cabinet can be ensured when the cable winch takes up and takes down the cable; simultaneously, when the on-site installation of being not convenient for of vehicle-mounted cable, the accessible changes the inside electric channel of electric cabinet, with outside cable lug connection to electric cabinet in, improved the suitability and the practicality of mobile energy storage car to this adjustable cable winch of mobile energy storage car receive and releases cable speed, the job site of being convenient for pulls the removal to the cable.
Description
Technical Field
The invention relates to the field of mobile energy storage, in particular to a mobile energy storage vehicle.
Background
With the progress of technology and the development of economy, the application field of the mobile energy storage vehicle is further widened, and the mobile energy storage vehicle can play a role of no substitution in a plurality of application scenes of important load power conservation and uninterrupted power supply supporting. However, the existing mobile energy storage vehicle has the following problems:
(1) due to the influence of various factors such as site environment and the like and the diversity requirement of a load end, a vehicle-mounted cable in the mobile energy storage vehicle is inconvenient to install and use, so that the mobile energy storage vehicle cannot normally operate, the limitation of the mobile energy storage vehicle in a specific environment is caused, and the further development of the mobile energy storage vehicle and the expansion of the market scale are limited;
(2) the existing power supply vehicle and the electric cabinet are in different places, and a user needs to connect two ends of a cable on site, so that time and labor are wasted; when the mobile energy storage vehicle is used, the cable connection needs to be dragged on site, and the dragging speed is different due to factors such as site environment and the like;
(3) the conventional winch generally adopts a constant-speed cable releasing mode, so that the cable releasing shortage in the early stage is easily caused, and the difficulty is increased for field installation due to the accumulation of the cable in the later stage.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide a mobile energy storage vehicle which can effectively reduce the procedures of on-site cable wiring and improve the on-site installation efficiency and use convenience; the connection stability of the vehicle-mounted cable and the electric cabinet can be ensured when the cable winch takes up and takes down the cable; simultaneously, when the on-site installation of being not convenient for of vehicle-mounted cable, the accessible changes the inside electric channel of electric cabinet, with outside cable lug connection to electric cabinet in, improved the suitability and the practicality of mobile energy storage car to this adjustable cable winch of mobile energy storage car receive and releases cable speed, the job site of being convenient for pulls the removal to the cable.
In order to solve the technical problems, the invention adopts the following technical scheme:
a mobile energy storage vehicle comprises an energy storage device, a winch device and an electric cabinet; the winch device comprises a cable winch, a stepless speed change motor and a vehicle-mounted cable, wherein the stepless speed change motor can drive the cable winch to rotate, the vehicle-mounted cable is arranged on the cable winch, and one end of the vehicle-mounted cable is connected with the electric cabinet; the electric cabinet is connected with the energy storage device through an internal cable.
The design idea of the technical scheme is that the existing cable winch is generally used for cable releasing at a constant speed, so that the cable releasing shortage in the early stage is easily caused, and the difficulty is increased for field installation under the condition of cable accumulation in the later stage; meanwhile, the vehicle-mounted cable is connected to the electric cabinet in advance, so that the operation that two ends of the vehicle-mounted cable are connected when the vehicle-mounted cable is used can be reduced, and the workload is reduced.
As a further improvement of the above technical solution:
the stepless speed change motor is connected with the electric cabinet. The stepless speed change motor is connected with the electric cabinet, so that the program control of the electric cabinet on the driving device can be realized, the cable winding and unwinding speed of the cable winch can be realized through the electric cabinet, and the cable can be conveniently dragged and moved on a construction site.
The electric cabinet is a multichannel electric cabinet and comprises a box body and a circuit switching device arranged in the box body, wherein the circuit switching device comprises an external copper bar and a control switch, and the control switch is used for controlling the external copper bar and an internal cable and controlling the on-off of a circuit between a vehicle-mounted cable and the internal cable. Can directly switch the inside electric channel of electric cabinet through circuit auto-change over device, the user can select to be connected inside cable and vehicle-mounted cable or external copper bar according to self needs, through using above-mentioned binary channels electric cabinet on mobile energy storage car, when external condition has the restriction, can't directly use the vehicle-mounted cable, can use in being connected to the electric cabinet with external load cable lug, can widen the application scene of mobile energy storage car.
The control switch is a double-knife switch which comprises a group of moving contacts and two groups of static contacts, an internal cable is connected to the moving contacts, an external copper bar is connected with one group of static contacts, and a vehicle-mounted cable is connected with the other group of static contacts. The double-knife switch can simply and effectively switch the electric circuit in the electric cabinet, and has low setting cost and simple operation.
The double-knife switch also comprises a handle for driving the moving contact, and the handle extends out of the box body through a hole formed in the surface of the box body. With the handle setting in the electric cabinet box outside, the user can externally direct operation, need not to open the electric cabinet box again or dismantle, has simplified the operation flow, still can judge directly perceivedly that the electric cabinet is currently under which electrical channel state.
The external copper bar extends out of the box body through a hole formed in the surface of the box body. Expose external copper bar in the electric cabinet box outside, the user can directly carry out wiring and broken string operation externally, need not to open or dismantle the electric cabinet box again, has simplified operation flow.
The external copper bar is positioned at the bottom of the box body. With external copper bar setting in the bottom of electric cabinet box, reducible user is the lifting distance of cable when terminating the line to the load end to reduce intensity of labour, improve labor efficiency.
The external copper bar is externally provided with a detachable insulating protective cover. Set up the insulating safety cover of detachable in external copper bar outside, can prevent to miss and touch, avoid the casualties because of misoperation or accident cause.
The circuit switching device also comprises a fixing plate, the double-knife switch is fixed on the fixing plate, and the fixing plate is fixed in the box body through a bolt and a positioning hole; the vehicle-mounted cable, the input cable and the external copper bar are connected with the double-knife switch through quick-release screws. Through the fixed plate with double-gate knife switch, external copper bar and cable integration together can effectively reduce line switching device's occupation space, fix the fixed mode at the box inside through bolt and locating hole with the fixed plate design simultaneously, can realize line switching device's quick dismantlement and maintenance, improved work efficiency.
The control switch comprises a remote terminal unit, a first circuit breaker and a second circuit breaker, wherein the first circuit breaker is used for controlling the connection or disconnection between the vehicle-mounted cable and the internal cable, and the second circuit breaker is used for controlling the connection or disconnection between the external copper bar and the internal cable; the control ends of the first circuit breaker and the second circuit breaker are connected with the remote terminal unit, and the remote terminal unit controls the internal cable to be communicated with the vehicle-mounted cable or the external copper bar by sending a control signal to the control end of the first circuit breaker or the control end of the second circuit breaker. This design can realize through the switching of electric circuit in the electrical control electric cabinet, has avoided the loaded down with trivial details nature of manual switching, still can realize output channel's programmed selection through remote terminal unit RTU to through remote terminal unit RTU's programming procedure, realize the interlocking function between first circuit breaker and the second circuit breaker, when guaranteeing that vehicle-mounted cable or external copper bar circular telegram, no electric current of another port passes through, improves the operational safety.
The remote terminal unit is connected with the stepless speed change motor, and when the stepless speed change motor runs, the remote terminal unit controls the first circuit breaker to be kept disconnected. According to the design, the speed of cable winch cable discharging can be controlled through the remote terminal unit RTU, the interlocking function between the stepless speed change motor and the first circuit breaker can be realized through the programming program of the remote terminal unit RTU, the non-electrification of the vehicle-mounted cable is ensured when the motor operates, and the operation safety is improved.
The cable winch comprises an outer roller and an inner slip ring which can rotate relatively, the inner slip ring is arranged inside the outer roller, one end of a vehicle-mounted cable connected with the electric cabinet is wound on the inner slip ring, and the other end of the vehicle-mounted cable is wound on the outer roller. Through setting up the cable drum into two-layer structure inside and outside but relative pivoted, can guarantee that the cable drum is when receiving and releasing the cable, no matter load end cable removes with what kind of speed or what kind of direction, can not drive the vehicle-mounted cable that is connected one end with the electric cabinet, guaranteed electric cabinet and vehicle-mounted cable junction's stable fixed, guaranteed safe in utilizationly.
The outer roller is made of high-strength non-metallic materials. The outer roller made of the non-metal material can effectively avoid the eddy current effect generated by the vehicle-mounted cable in the discharging process.
The winch device also comprises a speed reducer capable of reducing the rotating speed of the cable winch. The speed reducer is arranged to help the cable winch to reduce the rotating speed, and the cable laying speed is adjusted by matching with the stepless speed change motor.
The electric cabinet and the winch device are arranged in the mobile energy storage vehicle side by side. The arrangement mode can reduce the distance between the electric cabinet and the cable winch, is convenient for realizing the control of the electric cabinet on the cable winch and the connection of a vehicle-mounted cable on the cable winch and the electric cabinet.
Compared with the prior art, the invention has the advantages that:
(1) the mobile energy storage vehicle can effectively reduce the working procedures of on-site cable wiring, and improve the on-site installation efficiency and the use convenience;
(2) the mobile energy storage vehicle can ensure the connection stability of the vehicle-mounted cable and the electric cabinet when the cable winch takes up and takes down the cable;
(3) according to the mobile energy storage vehicle, when the vehicle-mounted cable is inconvenient to install on site, the external cable can be directly connected into the electric cabinet by changing the internal electric channel of the electric cabinet, so that the applicability and the practicability of the mobile energy storage vehicle are improved;
(4) the mobile energy storage vehicle can adjust the cable winding and unwinding speed of the cable winch, and facilitates the dragging and moving of the cable on a construction site.
Drawings
Fig. 1 is a front view of a mobile energy storage vehicle of embodiment 1;
fig. 2 is a side view of the mobile energy storage vehicle of embodiment 1;
fig. 3 is a schematic structural diagram of a line switching apparatus according to embodiment 1;
fig. 4 is a schematic view of an electrical control principle of the electric cabinet of embodiment 2.
Illustration of the drawings:
1. an energy storage device; 2. an electric cabinet; 3. a cable winch; 4. a stepless speed change motor; 5. a vehicle-mounted cable; 6. an inner cable; 7. connecting copper bars externally; 8. a moving contact; 9. static contact; 10. a handle; 11. a box body; 12. an insulating protective cover; 13. a fixing plate; 14. a quick-release screw; 15. an outer drum; 16. an inner slip ring; 17. a speed reducer; 18. a line switching device; 19. a carriage; 20. a support; 21. a remote terminal unit; 22. a first circuit breaker; 23. a second circuit breaker; 24. an isolating switch; 25. an electric operating mechanism.
Detailed Description
The invention is described in further detail below with reference to the figures and specific examples.
Example 1:
as shown in fig. 1 and fig. 2 (for convenience of showing the internal structure, the external surface of the car 19 of fig. 1 and the onboard cable 5 on the cable winch 3 of fig. 2 are subjected to transparentization treatment), the mobile energy storage car of the present embodiment includes a car 19, an energy storage device 1, a winch device and an electric cabinet 2; the winch device comprises a cable winch 3, a stepless speed change motor 4 capable of driving the cable winch 3 to rotate and a vehicle-mounted cable 5 arranged on the cable winch 3, wherein one end of the vehicle-mounted cable 5 is connected with the electric cabinet 2; the electric cabinet 2 is connected with the energy storage device 1 through an internal cable 6.
In this embodiment, the stepless speed change motor 4 is connected to the electric cabinet 2.
In this embodiment, the electric cabinet 2 is a dual-channel electric cabinet, and includes a box 11 and a circuit switching device 18 disposed in the box 11, as shown in fig. 3, the circuit switching device 18 includes an external copper bar 7 and a control switch, the control switch is a dual-gate knife switch, the dual-gate knife switch includes a set of moving contacts 8 and two sets of static contacts 9, the internal cable 6 is connected to the moving contacts 8, the external copper bar 7 is connected to one set of static contacts 9, and the vehicle-mounted cable 5 is connected to the other set of static contacts 9.
In this embodiment, the double-pole switch further includes a handle 10 for driving the movable contact 8, and the handle 10 extends out of the box 11 through a hole formed in a surface of the box 11.
In this embodiment, the external copper bar 7 extends out of the box body 11 through a hole formed in the surface of the box body 11.
In this embodiment, the external copper bar 7 is located at the bottom of the box body 11.
In this embodiment, the external copper bar 7 is externally provided with a detachable insulating protective cover 12.
In this embodiment, the line switching device 18 further includes a fixing plate 13, the dual-gate knife switch is fixed on the fixing plate 13, and the fixing plate 13 is fixed inside the box body 11 through a pin and a positioning hole; the vehicle-mounted cable 5, the input cable and the external copper bar 7 are connected with the double-knife switch through quick-release screws 14.
In this embodiment, the cable winch 3 includes an outer drum 15 and an inner slip ring 16 which can rotate relatively, the inner slip ring 16 is disposed inside the outer drum 15, one end of the vehicle-mounted cable 5 connected to the electric cabinet 2 is wound on the inner slip ring 16, and the other end of the vehicle-mounted cable 5 is wound on the outer drum 15.
In this embodiment, the outer drum 15 is made of a high-strength non-metallic material.
In this embodiment, the winch apparatus further includes a speed reducer 17 capable of reducing the rotation speed of the cable winch 3.
In this embodiment, the electric cabinet 2 and the cable winch 3 are mounted side by side on a bracket 20 provided in the vehicle compartment 19.
Example 2:
the mobile energy storage vehicle of the embodiment has the same components and structures as those of embodiment 1 except for the line switching device 18, and the structure of the mobile energy storage vehicle can refer to fig. 1 and 2, and the mobile energy storage vehicle comprises an energy storage device 1, a winch device and an electric cabinet 2; the winch device comprises a cable winch 3, a stepless speed change motor 4 capable of driving the cable winch 3 to rotate and a vehicle-mounted cable 5 arranged on the cable winch 3, wherein one end of the vehicle-mounted cable 5 is connected with the electric cabinet 2; the electric cabinet 2 is connected with the energy storage device 1 through an internal cable 6.
In this embodiment, the stepless speed change motor 4 is connected to the electric cabinet 2.
In this embodiment, the line switching device 18 includes an external copper bar 7 and a control switch, the control switch includes a remote terminal unit 21, a first circuit breaker 22 and a second circuit breaker 23, and control ends of the first circuit breaker 22 and the second circuit breaker 23 are both electric operating mechanisms 25; the external copper bar 7 and the vehicle-mounted cable 5 are both connected to the internal cable 6 through the isolating switch 24, the first circuit breaker 22 is arranged between the isolating switch 24 and the vehicle-mounted cable 5 and used for controlling connection or disconnection between the vehicle-mounted cable 5 and the internal cable 6, and the second circuit breaker 23 is arranged between the isolating switch 24 and the external copper bar 7 and used for controlling connection or disconnection between the external copper bar 7 and the internal cable 6; the control ends (namely, the electric operating mechanism 25) of the first circuit breaker 22 and the second circuit breaker 23 are connected with the remote terminal unit 21, and the remote terminal unit 21 controls the internal cable 6 to be communicated with the vehicle-mounted cable 5 or the external copper bar 7 by sending a control signal to the control ends of the first circuit breaker 22 or the second circuit breaker 23. The electrical control schematic inside the electrical cabinet 2 is shown in fig. 4.
In the present embodiment, the remote terminal unit 21 is connected to the continuously variable motor 4, and when the continuously variable motor 4 is operated, the remote terminal unit 21 controls the first breaker 22 to remain open.
In this embodiment, the cable winch 3 includes an outer drum 15 and an inner slip ring 16 which can rotate relatively, the inner slip ring 16 is disposed inside the outer drum 15, one end of the vehicle-mounted cable 5 connected to the electric cabinet 2 is wound on the inner slip ring 16, and the other end of the vehicle-mounted cable 5 is wound on the outer drum 15.
In this embodiment, the outer drum 15 is made of a high-strength non-metallic material.
In this embodiment, the winch apparatus further includes a speed reducer 17 capable of reducing the rotation speed of the cable winch 3.
In this embodiment, the electric cabinet 2 and the cable winch 3 are mounted side by side on a bracket 20 provided in the vehicle compartment 19.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above-described embodiments. Modifications and variations that may occur to those skilled in the art without departing from the spirit and scope of the invention are to be considered as within the scope of the invention.
Claims (10)
1. A mobile energy storage vehicle is characterized by comprising an energy storage device (1), a winch device and an electric cabinet (2); the winch device comprises a cable winch (3), a stepless speed change motor (4) capable of driving the cable winch (3) to rotate and a vehicle-mounted cable (5) arranged on the cable winch (3), wherein one end of the vehicle-mounted cable (5) is connected with the electric cabinet (2); the electric cabinet (2) is connected with the energy storage device (1) through an internal cable (6).
2. The mobile energy storage vehicle according to claim 1, characterized in that the continuously variable electric motor (4) is connected with an electric control box (2).
3. The mobile energy storage vehicle of claim 1, wherein the electric cabinet (2) is a multi-channel electric cabinet and comprises a box body (11) and a circuit switching device (18) arranged in the box body (11), the circuit switching device (18) comprises an external copper bar (7) and a control switch, and the control switch is used for controlling the on-off of a circuit between the external copper bar (7) and the internal cable (6) and between the vehicle-mounted cable (5) and the internal cable (6).
4. The mobile energy storage vehicle of claim 3, wherein the control switch is a double-knife switch, the double-knife switch comprises a group of moving contacts (8) and two groups of static contacts (9), the internal cable (6) is connected to the moving contacts (8), the external copper bar (7) is connected to one group of static contacts (9), and the vehicle-mounted cable (5) is connected to the other group of static contacts (9).
5. The mobile energy storage vehicle of claim 4, wherein the double-knife switch further comprises a handle (10) for driving the movable contact (8), and the handle (10) extends out of the box body (11) through an opening on the surface of the box body (11).
6. The mobile energy storage vehicle of claim 4, characterized in that the external copper bar (7) extends out of the box body (11) through an opening on the surface of the box body (11), the external copper bar (7) is positioned at the bottom of the box body (11), and a detachable insulating protective cover (12) is arranged outside the external copper bar (7).
7. The mobile energy storage vehicle of claim 3, wherein the line switching device (18) further comprises a fixing plate (13), the double-knife switch is fixed on the fixing plate (13), and the fixing plate (13) is fixed inside the box body (11) through a bolt and a positioning hole; the vehicle-mounted cable (5), the internal cable (6) and the external copper bar (7) are connected with the double-knife switch through quick-release screws (14).
8. The mobile energy storage vehicle of claim 3, wherein the control switch comprises a remote terminal unit (21), a first circuit breaker (22) and a second circuit breaker (23), the first circuit breaker (22) is used for controlling the connection or disconnection of the onboard cable (5) and the internal cable (6), and the second circuit breaker (23) is used for controlling the connection or disconnection of the external copper bar (7) and the internal cable (6); the control end of first circuit breaker (22) and second circuit breaker (23) is connected with remote terminal unit (21), and remote terminal unit (21) are through sending control signal for the control end of first circuit breaker (22) or second circuit breaker (23), control inside cable (6) are linked together with vehicle-mounted cable (5) or with external copper bar (7).
9. A mobile energy storage vehicle according to claim 8, characterized in that the remote terminal unit (21) is connected to a continuously variable electric motor (4), the remote terminal unit (21) controlling the first circuit breaker (22) to remain open when the continuously variable electric motor (4) is running.
10. A mobile energy storage vehicle according to any of claims 1-9, characterized in that the cable winch (3) comprises an outer drum (15) and an inner slip ring (16) which are relatively rotatable, the inner slip ring (16) is arranged inside the outer drum (15), one end of the vehicle-mounted cable (5) connected to the electric cabinet (2) is wound on the inner slip ring (16), and the other end of the vehicle-mounted cable (5) is wound on the outer drum (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011162024.9A CN112436406B (en) | 2020-10-27 | 2020-10-27 | Mobile energy storage vehicle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011162024.9A CN112436406B (en) | 2020-10-27 | 2020-10-27 | Mobile energy storage vehicle |
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| CN112436406A true CN112436406A (en) | 2021-03-02 |
| CN112436406B CN112436406B (en) | 2022-05-20 |
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| CN112436406B (en) | 2022-05-20 |
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Effective date of registration: 20230615 Address after: Room 208, Building A1-A3, Jinrui Lugu Science Park, 28 Lutian Road, Yuelu District, Changsha, Hunan Province, 410221 Patentee after: Hunan Cloud Storage Recycling New Energy Technology Co.,Ltd. Patentee after: National network Hunan Integrated Energy Service Co.,Ltd. Address before: 410000 966 south foot Road, Yuelu District, Changsha, Hunan Patentee before: CHANGSHA RESEARCH INSTITUTE OF MINING AND METALLURGY Co.,Ltd. Patentee before: National network Hunan Integrated Energy Service Co.,Ltd. |