CN207859965U - The dynamical system of off-highway electric power wheel self-discharging vehicle - Google Patents
The dynamical system of off-highway electric power wheel self-discharging vehicle Download PDFInfo
- Publication number
- CN207859965U CN207859965U CN201820257059.2U CN201820257059U CN207859965U CN 207859965 U CN207859965 U CN 207859965U CN 201820257059 U CN201820257059 U CN 201820257059U CN 207859965 U CN207859965 U CN 207859965U
- Authority
- CN
- China
- Prior art keywords
- dumper
- electric
- dynamical system
- battery pack
- battery
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- 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
Abstract
The utility model is related to electric power wheel self-discharging vehicle technical field, the particularly a kind of dynamical system and its control method of off-highway electric power wheel self-discharging vehicle.Using engine as energy elements, serious pollution problem, non-renewable sex chromosome mosaicism during use, efficiency problem still remain Dual-energy source dumper.Dumper described in the utility model is equipped with dynamical system, including power receiving device, battery pack, stringing facility, control system, control system include：Entire car controller, electric machine controller, battery management system, charger are realized by control method and are charged to battery pack while external power drives motor works.The utility model avoids the pollution problem of fuel engines, simplify structure, mitigate dead weight, increase carrying capacity, it can be energy saving and increase economic efficiency, realize the pure electric vehicle driving of dumper, take full advantage of economic, cleanliness without any pollution electric power resource, the comprehensive operation cost for reducing dumper.
Description
Technical field
The utility model is related to electric power wheel self-discharging vehicle technical fields, and particularly a kind of off-highway electric power wheel self-discharging vehicle is dynamic
Force system.
Background technology
It is off-highway（It is mining）Electric power wheel self-discharging vehicle（Hereinafter referred to as dumper）It is to be shelled in surface mine to complete the rock earthwork
From with Ore Transportation task and a kind of heavy vehicle for using, work characteristics is that short length of run, carrying weight, shape be tall and big, power
It is powerful, since 1963 come out, continuous perfect in shape and function, new technology update, the use of new material and new process are have passed through, matter is loaded
Amount also develops to current 360 tons, forms multi-series product, becomes year above surface mine of yield ten-million-ton scale, large-scale water
The ideal means of transport of sharp construction project.
The kind of drive of heavy type mining electric power wheel self-discharging vehicle is driven using AC-DC at present, by diesel engine band
Dynamic generator sends out three-phase mid-frequency alternating current, after external fairings rectification becomes direct current, transports to automobile axle both sides
DC traction motor, to drive dumper to travel.Dual-energy source dumper is i.e. using the power supply of auxiliary stringing and diesel engine itself
It is run as Dual-energy source.When heavy duty is gone up a slope, for dumper using auxiliary stringing directly for electric drive, diesel engine only makees idling
Operation；In level line when driving then by diesel engine drives；It is electric caused by mine electric wheel dump electric braking in descending
Power is through assisting stringing to be directly returned to power grid.The appearance of Dual-energy source dumper had both solved mine electric wheel dump heavy duty upward slope
When the problems such as diesel engine power is insufficient, speed is slow, and saved the energy, reduced the exhaust gas discharge of diesel engine, be conducive to
Environmental protection, while the power requirement of diesel engine can be reduced suitably.With large surface mine exploitation gradually to
Deep recess development and the enhancing of the energy, environmental consciousness, Dual-energy source mine electric wheel dump will be in large surface mine
The effect of bigger is played in exploitation.
In the design scheme of above-mentioned Dual-energy source dumper, diesel engine is still that the essential driving force of dumper is come
Source, and using engine as energy reserves and interface components, i.e., when independently being driven using fuel oil as dumper（Without stringing backman
Condition）Intermediary's drive energy when mutually switching of stored energy source and Dual-energy source, serious pollution problem in use,
Non-renewable sex chromosome mosaicism, efficiency problem still remain.
Invention content
The purpose of this utility model is：Develop it is a kind of all using the electric power wheel self-discharging vehicle of new cleaning fuel, by with
The power control system to match, realize with pure driven by power dumper work, with solve conventional fuel oil driving caused by
The problems such as pollution, efficiency.
Used technical solution is to solve above-mentioned technical problem：The dynamical system of off-highway electric power wheel self-discharging vehicle,
It is characterized in that：.
【Dynamical system】
The dumper is equipped with dynamical system, which includes power receiving device, battery pack；
Power receiving device is mounted on dumper car body, for being electrically connected for dumper and external power supply, to transmit electric energy；
Battery pack is mounted on dumper car body, the electric energy for receiving, storing external power supply conveying, driving motor work
Make.
The power receiving device includes：Pantograph, bracket component, by electric detection means；
Bracket component is used to support, lifts pantograph, and pantograph is made to be connected with external power supply；
By electric detection means for detecting whether external power supply has electricity, the electric current of external power supply, voltage signal are passed to
Dumper.
【Stringing facility】
The dynamical system includes stringing facility, and the stringing erection of equipment is in the run trace of dumper, as outside
Power supply to dumper for transmitting electric power.
The stringing facility includes AC/DC conversion equipments, for the alternating current of municipal power supply system to be converted into dumper
Required DC voltage.
【Control system】
The dynamical system includes control system, judge for monitoring travel condition of vehicle, collecting signal, function logic,
Transmission executes instruction, and coordinates the work of the component of dynamical system.
The control system includes：Entire car controller, electric machine controller, battery management system；
Entire car controller acquires driver driving signal as the vehicle central control part of dumper, obtains driving motor
With the relevant information of battery system, analysis and operation is carried out, and instruction is sent to electric machine controller and battery management system, realized
Vehicle drive control, energy optimal control and feedback braking control；Show whole vehicle state information；Have perfect fault diagnosis and
Processing function；
Electric machine controller, for controlling vehicle traction electric machine.Controller controls motor operation, is received by CAN interface outer
Portion controls signal, and feeds back current operating conditions information, according to control need speed-changing, torque control model；In having
Set the fault detects such as overvoltage, overcurrent and processing function；
Battery management system, intelligent management and each battery unit of maintenance, prevent battery from overcharge and overdischarge occur,
The service life for extending battery, monitors the state of battery.
The state of the battery management system monitoring battery pack.
The control system includes charger, for charging to battery pack.
The charger is equipped with the electronic component and auxiliary circuit for having constant-current voltage-stabilizing function, has programmable function, uses
CAN interface is communicated to connect with entire car controller, can adjust charge power in real time.
【Control method】
Control method is used by the control system：
Whether the entire car controller monitoring power receiving device is electrically connected with the foundation of stringing facility, then uses stringing facility in this way
External power supply to traction electric machine transmit electric power drive its work, otherwise use battery pack electric drive traction electric machine work.
In the control method, external power supply driving motor work while, according to the electric power storage state of battery pack to
Battery pack charges.
The control method includes the following steps：
The entire car controller monitors the power on signal by electric detection means,
If power receiving device has electricity, then entire car controller sends open command, cut-out battery pack and motor control to high-voltage switch gear I
High-voltage switch gear II is closed by the power line of device processed, and traction electric machine is individually powered by the external power supply of stringing facility；
In the case where power receiving device has electricity, external power supply to directly drive traction electric machine, entire car controller passes through cell tube
The energy storage capacity for managing system monitoring battery pack, if capacity is less than threshold value, then entire car controller is closed to the transmission of high-voltage switch gear III
Instruction is closed, the power line of charger and battery pack is connected to, is charged to battery pack by external power supply；
If power receiving device is without electricity, then the transmission of high-voltage switch gear I is closed by entire car controller, high-voltage switch gear 2 and high-voltage switch gear 3 break
Open, cut off external power supply and the power line and charger of electric machine controller and the charging circuit of battery pack, connection battery pack with
The power line of electric machine controller, traction electric machine are individually powered by battery pack.
【Brake electric feedback】
The dynamical system includes electric power reclamation plant, which is located between dumper traction electric machine and battery pack, is used
In the electric energy that absorption dumper is fed back when electric braking brakes, electric energy is stored into battery pack.
The utility model has the beneficial effects that：
1, the supplementary energy using battery as Dual-energy source electric power wheel self-discharging vehicle efficiently avoids driving with fuel engines
Dynamic generator provides the pollution problem of electric power energy, prevents exhaust gas discharge, is conducive to environmental protection；
2, the structure of dumper is simplified, mitigates dead weight, increases the carrying capacity of dumper；
The energy that feeds back when 3, absorbing dumper braking, can be energy saving and increases economic efficiency；
4, the battery supply driving dumper work carried using the external power supply and dumper of stringing facility, is realized certainly
The pure electric vehicle driving unloaded takes full advantage of economic, cleanliness without any pollution electric power resource, the comprehensive operation for reducing dumper
Cost.
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model one embodiment dynamical system.
Specific implementation mode
Dynamical system to off-highway electric power wheel self-discharging vehicle described in the utility model and its control by the following examples
The concrete structure and method details of method are described.
Embodiment one：【Dynamical system】
As shown in Figure 1, dumper described in the present embodiment is equipped with dynamical system, which includes power receiving device, battery
Group；Power receiving device is mounted on dumper car body, for being electrically connected for dumper and external power supply, to transmit electric energy；Battery pack
On dumper car body, the electric energy for receiving, storing external power supply conveying, driving motor work.
Further, the power receiving device includes：Pantograph, bracket component, by electric detection means；Bracket component is for branch
Support, lifting pantograph, make pantograph be connected with external power supply；By electric detection means for detecting whether external power supply has electricity,
The electric current of external power supply, voltage signal are passed into dumper.Power receiving device is generally located on the roof of dumper, pantograph
On the car body by bracket component installation, bracket component can control current collecting bow lifting, tilts, guarantee pantograph and external power supply
It is bonded.In addition, there is pantograph lead, the lead to send the electric energy of external power supply in the dynamical system of dumper to
Associated components.It is above-mentioned by electric detection means for detecting whether external power supply has electricity, while reflect pantograph whether with external electrical
Source is correctly connected, to ensure that dumper can effectively utilize the electric energy of external power supply；The detection device can be detection electricity
The device of stream can also be to detect the device of voltage, such as current transformer.The status information that will be detected by electric detection means
The central control part for passing to dumper, so that central control part selects the source of electric power energy.
Further, the dynamical system includes stringing facility, the stringing erection of equipment in the run trace of dumper,
It is used to transmit electric power to dumper as external power supply.For the run trace of dumper, which is alternatively provided at mine
On the accommodation road of area's dumper, both ends are as far as possible to the beginning and end of accommodation road（I.e. the entrucking point of dumper, unload
Point）Extend, first, dumper is made whole can be driven on the way using external power supply in traveling, ensures dynamical stability；Second is that for certainly
It unloads and external power supply supply line as long as possible is provided, to reduce the duration using battery, extend battery life.
Further, the stringing facility includes AC/DC conversion equipments, for converting the alternating current of municipal power supply system
At the DC voltage needed for dumper.In environment of mining area, municipal power supply system is typically for answering 380V alternating currents, needs the friendship
Galvanic electricity passes through transformer equipment（AC/DC conversion equipments）The required direct current of dumper is converted to, and electricity is drawn according to dumper
The voltage specification requirement of machine, above-mentioned transformer equipment should have the different grades of DC voltages such as output 480V, 520V, 560V, with
The traction electric machine of dumper is set to obtain matched voltage.
Embodiment two：【Control system】
As shown in Figure 1, on the basis of above-described embodiment, dynamical system described in the present embodiment includes control system, for supervising
Control travel condition of vehicle, collecting signal, function logic judge, transmission executes instruction, and coordinate the work of the component of dynamical system.Institute
Stating control system includes：Entire car controller, electric machine controller, battery management system；Entire car controller, the vehicle as dumper
Central control part acquires driver driving signal, obtains the relevant information of driving motor and battery system, is analyzed and transported
It calculates, and instruction is sent to electric machine controller and battery management system, realize vehicle drive control, energy optimal control and brake back
Feedback control；Show whole vehicle state information；Has perfect fault diagnosis and dealing function；Electric machine controller, for controlling vehicle
Traction electric machine.Controller controls motor operation, and external control signal is received by CAN interface, and feeds back current operating conditions letter
Breath, according to control need speed-changing, torque control model；Have fault detects and the processing functions such as built-in overvoltage, overcurrent；
Battery management system, intelligent management and each battery unit of maintenance, prevent battery from overcharge and overdischarge occur, extend battery
Service life, monitor the state of battery.
Further, the state of the battery management system monitoring battery pack.
Further, the control system includes charger, for charging to battery pack.
Further, the charger is equipped with the electronic component and auxiliary circuit for having constant-current voltage-stabilizing function, has program-controlled
Function is communicated to connect using CAN interface and entire car controller, can adjust charge power in real time.
Such as Fig. 1, central control part of the entire car controller as dumper is responsible for acquisition battery management system（That is battery
Group）Battery status information, electric machine controller（That is traction electric machine）Running state information, charger charging status information etc.
Information, and by the external power supply status information of electric detection means, the electric power energy feelings that comprehensive descision dumper currently has
Condition is distributed rationally, and most suitable electric power energy is selected to power for motor.
Embodiment three：【Control method】
As shown in Figure 1, on the basis of above-described embodiment, control method is used by control system described in the present embodiment：
Whether the entire car controller monitoring power receiving device is electrically connected with the foundation of stringing facility, then uses stringing facility in this way
External power supply to traction electric machine transmit electric power drive its work, otherwise use battery pack electric drive traction electric machine work.
In the control method, external power supply driving motor work while, according to the electric power storage state of battery pack to
Battery pack charges.The charging strategy of battery pack is：When dumper detects that external power supply has electricity, selection immediately uses external electrical
Power source of the source as dumper, driving motor work, while being charged to the insufficient battery pack of electric power by charger, to
Ensure that battery pack has sufficient electric energy storage.
The control method of dynamical system described in the present embodiment, its object is to keep the full power state of battery pack constantly, with
Cope with the emergency cases such as external power supply interruption, the dumper failure being likely to occur.Because of " pure electric vehicle " described in the utility model
Dumper is all using electric drive, i.e., based on the electric power of external stringing auxiliary, supplemented by included battery power, if outside
If portion's power supply interrupts suddenly, battery driven can only be relied on to work, and the power supply capacity of battery pack is limited, drives dumper
Duration it is generally shorter, may cause dumper midway cast anchor, influence to produce.With regard to the transport of the energy, using portability for, certain
A bit in special circumstances, the fuel oil energy may be more easy to manipulate than electric power energy, and solution bursting problem is more convenient, therefore, if " pure
It is electronic " dumper not can be well solved above-mentioned bursting problem, then the characteristics of its " pure electric vehicle " will also have a greatly reduced quality.The present embodiment
The control method of the dumper dynamical system can remain that the electricity of battery pack expires trellis state in a manner of most safe,
It is enough to cope with the various emergency cases in zone of reasonableness, so that dumper is got rid of poverty by self power, send and repair.
Further, the control method includes the following steps：
Entire car controller monitoring by electric detection means power on signal, if power receiving device has electricity, then entire car controller
Open command is sent to high-voltage switch gear I, the power line of battery pack and electric machine controller is cut off, high-voltage switch gear II is closed, is led
Draw motor individually to be powered by the external power supply of stringing facility；
In the case where power receiving device has electricity, external power supply to directly drive traction electric machine, entire car controller passes through cell tube
The energy storage capacity for managing system monitoring battery pack, if capacity is less than threshold value, then entire car controller is closed to the transmission of high-voltage switch gear III
Instruction is closed, the power line of charger and battery pack is connected to, is charged to battery pack by external power supply；
If power receiving device is without electricity, then the transmission of high-voltage switch gear I is closed by entire car controller, high-voltage switch gear 2 and high-voltage switch gear 3 break
Open, cut off external power supply and the power line and charger of electric machine controller and the charging circuit of battery pack, connection battery pack with
The power line of electric machine controller, traction electric machine are individually powered by battery pack.
Embodiment three：【Brake electric feedback】
On the basis of above-described embodiment, dynamical system described in the present embodiment includes electric power reclamation plant, which is located at certainly
It unloads between traction electric machine and battery pack, electric energy is stored by the electric energy fed back for absorbing dumper when electric braking brakes
In battery pack.
It should be noted last that the above specific implementation mode is only to illustrate the technical solution rather than limit of the invention
System, although the invention is described in detail with reference to example, it will be understood by those of ordinary skill in the art that, it can be right
The technical solution of the invention is modified or replaced equivalently, without departing from the spirit and model of the invention technical solution
It encloses, should all cover in the right of the invention.
Claims (7)
1. the dynamical system of off-highway electric power wheel self-discharging vehicle, it is characterised in that：
The dumper is equipped with dynamical system, which includes power receiving device, battery pack；
Power receiving device is mounted on dumper car body, for being electrically connected for dumper and external power supply, to transmit electric energy；
Battery pack is mounted on dumper car body, the electric energy for receiving, storing external power supply conveying, driving motor work.
2. the dynamical system of off-highway electric power wheel self-discharging vehicle according to claim 1, it is characterised in that：
The power receiving device includes：Pantograph, bracket component, by electric detection means；
Bracket component is used to support, lifts pantograph, and pantograph is made to be connected with external power supply；
By electric detection means for detecting whether external power supply has electricity, the electric current of external power supply, voltage signal are passed into self-unloading
Vehicle.
3. the dynamical system of off-highway electric power wheel self-discharging vehicle according to claim 2, it is characterised in that：
The dynamical system includes stringing facility, and the stringing erection of equipment is in the run trace of dumper, as external power supply
For transmitting electric power to dumper.
4. the dynamical system of the off-highway electric power wheel self-discharging vehicle according to claim 1,2 or 3 any claims, feature
It is：
The dynamical system includes control system, judges for monitoring travel condition of vehicle, collecting signal, function logic, sends
It executes instruction, coordinates the work of the component of dynamical system；
The control system includes：Entire car controller, electric machine controller, battery management system；
Entire car controller acquires driver driving signal as the vehicle central control part of dumper, obtains driving motor and electricity
The relevant information of cell system carries out analysis and operation, and sends instruction to electric machine controller and battery management system, realizes vehicle
Drive control, energy optimal control and feedback braking control；Show whole vehicle state information；Has perfect fault diagnosis and dealing
Function；
Electric machine controller, for controlling vehicle traction electric machine, which controls motor operation, is received by CAN interface external
Control signal, and feed back current operating conditions information, according to control need speed-changing, torque control model；Have built-in
The fault detects such as overvoltage, overcurrent and processing function；
Battery management system, intelligent management and each battery unit of maintenance, prevent battery from overcharge and overdischarge occur, extend
The service life of battery monitors the state of battery；The state of the battery management system monitoring battery pack.
5. the dynamical system of off-highway electric power wheel self-discharging vehicle according to claim 4, it is characterised in that：
The control system includes charger, for charging to battery pack.
6. the dynamical system of off-highway electric power wheel self-discharging vehicle according to claim 5, it is characterised in that：
The charger is equipped with the electronic component and auxiliary circuit for having constant-current voltage-stabilizing function, has programmable function, total using CAN
Line interface is communicated to connect with entire car controller, can adjust charge power in real time.
7. the dynamical system of the off-highway electric power wheel self-discharging vehicle according to claim 1,2,3,5 or 6, it is characterised in that：
The dynamical system includes electric power reclamation plant, which is located between dumper traction electric machine and battery pack, for inhaling
The electric energy that dumper is fed back when electric braking brakes is received, electric energy is stored into battery pack.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820257059.2U CN207859965U (en) | 2018-02-13 | 2018-02-13 | The dynamical system of off-highway electric power wheel self-discharging vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820257059.2U CN207859965U (en) | 2018-02-13 | 2018-02-13 | The dynamical system of off-highway electric power wheel self-discharging vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207859965U true CN207859965U (en) | 2018-09-14 |
Family
ID=63457283
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820257059.2U Active CN207859965U (en) | 2018-02-13 | 2018-02-13 | The dynamical system of off-highway electric power wheel self-discharging vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207859965U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108162769A (en) * | 2018-02-13 | 2018-06-15 | 内蒙古幸汇国创重工有限公司 | The dynamical system and its control method of off-highway electric power wheel self-discharging vehicle |
| CN109204000A (en) * | 2018-09-30 | 2019-01-15 | 北京科技大学 | A kind of pantograph especially of stringing formula pure electric vehicle underground carry scraper stringing system |
-
2018
- 2018-02-13 CN CN201820257059.2U patent/CN207859965U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108162769A (en) * | 2018-02-13 | 2018-06-15 | 内蒙古幸汇国创重工有限公司 | The dynamical system and its control method of off-highway electric power wheel self-discharging vehicle |
| CN109204000A (en) * | 2018-09-30 | 2019-01-15 | 北京科技大学 | A kind of pantograph especially of stringing formula pure electric vehicle underground carry scraper stringing system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108162769A (en) | The dynamical system and its control method of off-highway electric power wheel self-discharging vehicle | |
| CN201890228U (en) | Diesel generator and storage battery hybrid power alternating-current drive locomotive control system | |
| CN104139709B (en) | A kind of control system of fuel cell stroke lengthening unit and control method | |
| AU2010308508B2 (en) | System and method for reinjection of retard energy in a trolley-based electric mining haul truck | |
| US20130113279A1 (en) | Electric vehicle propulsion control device and railway vehicle system | |
| AU2010308439A1 (en) | Peak demand reduction in mining haul trucks utilizing an on-board energy storage system | |
| CN108382232A (en) | A kind of Dynamic design method of quarry tipper | |
| CN110014864A (en) | A kind of train traction rescue mode and system | |
| CN101618825B (en) | Energy-saving elevator | |
| CN104627003B (en) | One kind is used for electric motor intelligent switching charging and energy storage battery charge controller | |
| CN207859965U (en) | The dynamical system of off-highway electric power wheel self-discharging vehicle | |
| CN212400923U (en) | Netless self-walking energy storage and bidirectional AC/DC converter system for rail transit | |
| CN102730604A (en) | Tandem hybrid fork lift truck | |
| CN107733055B (en) | Charging system for vehicle-mounted power battery of oil-electricity hybrid power locomotive | |
| CN111114345A (en) | Pure electric alternating-current transmission dumper driving system | |
| CN115610212A (en) | Pure mining alternating current dump truck driving system with power battery capable of being configured in modular mode | |
| CN106671791A (en) | Rail train power supply device and rail train | |
| CN109131380B (en) | Main and auxiliary transmission system of diesel locomotive and diesel locomotive | |
| CN205113038U (en) | Composite power source increases controlling means of form electric motor car | |
| CN106608594A (en) | Extended-range energy-saving hybrid power system applied to cranes | |
| CN205034976U (en) | Support rubber -tired crane of two kinds of power supply modes | |
| CN209126536U (en) | Using the duplicate supply mode pure electric vehicle mine car of contact net and battery | |
| CN110116657A (en) | The power supply system and method for rail vehicle | |
| CN202034792U (en) | Electric supply mobile crane transition power supply based on super capacitor | |
| CN212400922U (en) | Non-net self-walking energy storage and unidirectional AC/DC converter system for rail transit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210126 Address after: Room 2008, 316 Maoshan Road, Qingdao area, China (Shandong) pilot Free Trade Zone, Qingdao, Shandong 266500 Patentee after: China International heavy industry (Qingdao) Co.,Ltd. Address before: 028000 No.3 (building 3-16), Shuguang complex building, No.6 Committee, Horqin office, Horqin district, Tongliao City, Inner Mongolia Autonomous Region Patentee before: INNER MONGOLIA XINGHUI GUOCHUANG HEAVY INDUSTRY Co.,Ltd. |