CN209462065U - Charger and charging system - Google Patents
Charger and charging system Download PDFInfo
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- CN209462065U CN209462065U CN201822138821.8U CN201822138821U CN209462065U CN 209462065 U CN209462065 U CN 209462065U CN 201822138821 U CN201822138821 U CN 201822138821U CN 209462065 U CN209462065 U CN 209462065U
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Abstract
The utility model provides a kind of charger and charging system, is related to Vehicular charging technical field, which includes sequentially connected input filter unit, input rectifying unit, power conversion unit and output rectification unit；Input filter unit is used to carry out high-frequency harmonic to externally input alternating voltage to filter out processing, and is transported to input rectifying unit as the first alternating voltage for the alternating voltage after high-frequency harmonic is filtered out；Input rectifying unit is used to the first alternating voltage being converted to the first DC voltage, and the first DC voltage is transported to power conversion unit；Power conversion unit is used to the first DC voltage inversion be preset second alternating voltage, and the second alternating voltage is transported to output rectification unit；Output rectification unit is used to the second alternating voltage being converted to preset second DC voltage, and the second DC voltage is supplied to external equipment.The utility model is capable of providing biggish charge power.
Description
Technical field
The utility model relates to Vehicular charging technical fields, more particularly, to a kind of charger and charging system.
Background technique
In recent years, charger development technique continues to develop, and charger is widely used in the tracks such as high-speed rail, motor-car and subway
On vehicular traffic, important component of the charger as rail traffic vehicles, only Vehicular accumulator cell does not charge, and is vehicle
Low-voltage load equipment provides power supply.And the inverter of existing charger is generally the half-bridge inversion circuit of two IGBT, exists
The lesser problem of the charge power of offer.
Utility model content
In view of this, being capable of providing biggish the purpose of this utility model is to provide a kind of charger and charging system
Charge power.
To achieve the goals above, the utility model embodiment the technical solution adopted is as follows:
In a first aspect, the utility model embodiment provides a kind of charger, which includes sequentially connected input
Filter unit, input rectifying unit, power conversion unit and output rectification unit；Input filter unit is used for externally input
Alternating voltage carries out high-frequency harmonic and filters out processing, and conveys the alternating voltage after high-frequency harmonic is filtered out as the first alternating voltage
To input rectifying unit；Input rectifying unit is used to the first alternating voltage being converted to the first DC voltage, and by the first direct current
Voltage is transported to power conversion unit；Power conversion unit is used to the first DC voltage inversion be preset second alternating current
Pressure, and the second alternating voltage is transported to output rectification unit；Wherein, power conversion unit includes high frequency phase-shifting full-bridge inversion
Device, high frequency phase-shifting full-bridge inverter include four IGBT switching tubes；Output rectification unit is for being converted to the second alternating voltage
Preset second DC voltage, and the second DC voltage is supplied to external equipment；Wherein, external equipment include battery and/
Or vehicle electrical equipment.
With reference to first aspect, the utility model embodiment provides the first possible embodiment of first aspect,
In, input rectifying unit includes sequentially connected three-phase diode bridge rectifier and the first LC filter circuit.
With reference to first aspect, the utility model embodiment provides second of possible embodiment of first aspect,
In, power conversion unit further includes the high frequency transformer being connected with high frequency phase-shifting full-bridge inverter；High frequency phase-shifting full-bridge inverter
For being third alternating voltage by the first DC voltage inversion, and third alternating voltage is transported to high frequency transformer；High frequency becomes
Depressor is used to third alternating voltage being transformed to the second alternating voltage, and the second alternating voltage is transported to output rectification unit.
The possible embodiment of second with reference to first aspect, the utility model embodiment provide the of first aspect
Three kinds of possible embodiments, wherein high frequency phase-shifting full-bridge inverter is also connected with gate drive circuit, and gate drive circuit is used
In providing driving signal for high frequency phase-shifting full-bridge inverter；The output end of high frequency transformer is also connected with for being the second alternating current
The isolation capacitance of filters pressing wave.
With reference to first aspect, the utility model embodiment provides the 4th kind of possible embodiment of first aspect,
In, output rectification unit includes sequentially connected rectification circuit, peak voltage absorbing circuit and the 2nd LC filter circuit.
With reference to first aspect, the utility model embodiment provides the 5th kind of possible embodiment of first aspect,
In, charger further includes the main control unit connecting respectively with output rectification unit, input rectifying unit and power conversion unit；
Main control unit is used to receive the voltage configuration information of user's input, and the first DC voltage, the is arranged based on voltage configuration information
Two alternating voltages and the second DC voltage.
With reference to first aspect, the utility model embodiment provides the 6th kind of possible embodiment of first aspect,
In, charger includes shell, and input filter unit, input rectifying unit, power conversion unit and output rectification unit are respectively provided with
In in shell；Charger further includes being set to the intracorporal radiator of shell.
The 6th kind of possible embodiment with reference to first aspect, the utility model embodiment provide the of first aspect
Seven kinds of possible embodiments, wherein radiator includes heat-pipe radiator and temperature sensor.
Second aspect, the utility model embodiment also provide a kind of charging system, comprising: such as above-mentioned first aspect to first
The charger of any one of 7th kind of possible embodiment of aspect further includes the external equipment connecting with charger.
In conjunction with second aspect, the utility model embodiment provides the first possible embodiment of second aspect,
In, charger is arranged on rail traffic vehicles.
It includes sequentially connected input that the utility model embodiment, which provides a kind of charger and charging system, the charger,
Filter unit, input rectifying unit, power conversion unit and output rectification unit, by input filter unit to externally input
Alternating voltage carries out high-frequency harmonic and filters out processing, and conveys the alternating voltage after high-frequency harmonic is filtered out as the first alternating voltage
To input rectifying unit, the first alternating voltage is converted into the first DC voltage by input rectifying unit, and by the first direct current
Pressure is transported to power conversion unit, and the first DC voltage inversion is preset second alternating voltage by power conversion unit, and will
Second alternating voltage is transported to output rectification unit, exports rectification unit for the second alternating voltage and is converted to preset second direct current
Voltage, and the second DC voltage is supplied to external equipment.Due to the high frequency phase-shifting full-bridge inversion of charger in the utility model
Device includes four IGBT switching tubes, compares existing charger, is capable of providing biggish charge power.
Other feature and advantage of the utility model will illustrate in the following description, also, partly from specification
In become apparent, or understood and implementing the utility model.The purpose of this utility model and other advantages are illustrating
Specifically noted structure is achieved and obtained in book, claims and attached drawing.
To enable the above objects, features, and advantages of the utility model to be clearer and more comprehensible, preferred embodiment is cited below particularly, and
Cooperate appended attached drawing, is described in detail below.
Detailed description of the invention
It, below will be right in order to illustrate more clearly of specific embodiment of the present invention or technical solution in the prior art
Specific embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, it is described below
In attached drawing be that some embodiments of the utility model are not paying creativeness for those of ordinary skill in the art
Under the premise of labour, it is also possible to obtain other drawings based on these drawings.
Fig. 1 shows a kind of structural schematic diagram of charger provided by the utility model embodiment；
Fig. 2 shows the structural schematic diagrams of another kind charger provided by the utility model embodiment；
Fig. 3 shows the structural schematic diagram of another kind charger provided by the utility model embodiment；
Fig. 4 shows a kind of structural schematic diagram of charging system provided by the utility model embodiment.
Specific embodiment
To keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, below in conjunction with attached drawing to this
The technical solution of utility model is clearly and completely described, it is clear that described embodiment is that the utility model a part is real
Example is applied, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not making
Every other embodiment obtained, fall within the protection scope of the utility model under the premise of creative work.
The inverter of current existing charger is generally the half-bridge inversion circuit of two IGBT, and there are the charging function of offer
The lesser problem of rate is based on this, and a kind of charger and charging system provided by the embodiment of the utility model are capable of providing biggish
Charge power.
To be carried out to a kind of charger disclosed in the utility model embodiment first convenient for understanding the present embodiment
It is discussed in detail.
In one embodiment, the utility model embodiment provides a kind of charger, charger shown in Figure 1
Structural schematic diagram, as shown, the charger includes sequentially connected input filter unit 10, input rectifying unit 20, function
Rate converter unit 30, high frequency phase-shifting full-bridge inverter 301 and output rectification unit 40.
Input filter unit is used to carry out high-frequency harmonic to externally input alternating voltage to filter out processing, and will filter out high frequency
Alternating voltage after harmonic wave is transported to input rectifying unit as the first alternating voltage.
Input rectifying unit is used to be converted to the first alternating voltage the first DC voltage, and the first DC voltage is conveyed
To power conversion unit.
Power conversion unit is used to the first DC voltage inversion be preset second alternating voltage, and by the second alternating current
Pressure is transported to output rectification unit；Wherein, power conversion unit includes high frequency phase-shifting full-bridge inverter, high frequency phase-shifting full-bridge inversion
Device includes four IGBT switching tubes.
Output rectification unit is used to the second alternating voltage being converted to preset second DC voltage, and by the second direct current
Pressure is supplied to external equipment；Wherein, external equipment includes battery and/or vehicle electrical equipment.
Above-mentioned charger provided by the embodiment of the utility model, including sequentially connected input filter unit, input rectifying
Unit, power conversion unit and output rectification unit carry out high frequency to externally input alternating voltage by input filter unit
Harmonic filtration processing, and it is transported to input rectifying unit as the first alternating voltage using the alternating voltage after high-frequency harmonic is filtered out,
The first alternating voltage is converted into the first DC voltage by input rectifying unit, and the first DC voltage is transported to power conversion
First DC voltage inversion is preset second alternating voltage, and the second alternating voltage is conveyed by unit, power conversion unit
To output rectification unit, the second alternating voltage is converted to preset second DC voltage by output rectification unit, and straight by second
Galvanic electricity pressure is supplied to external equipment.Since the high frequency phase-shifting full-bridge inverter of charger in the utility model includes that four IGBT are opened
Guan Guan compares existing charger, is capable of providing biggish charge power.
Specifically, input filter unit includes filter circuit, input rectifying unit includes rectification circuit and LC filter circuit,
Power conversion unit includes inverter circuit i.e. high frequency phase-shifting full-bridge inverter, and high frequency phase-shifting full-bridge inverter includes that four IGBT are opened
Guan Guan is the first IGBT switching tube, the 2nd IGBT switching tube, the 3rd IGBT switching tube and the 4th IGBT switching tube, output respectively
Rectification unit includes diode rectifier circuit.
The structural schematic diagram of another charger shown in Figure 2 also illustrates three-phase two on the basis of Fig. 1
Pole pipe bridge rectifier 201, the first LC filter circuit 202, high frequency transformer 302, the first IGBT switching tube 301a, the 2nd IGBT
Switching tube 301b, the 3rd IGBT switching tube 301c, the 4th IGBT switching tube 301d, gate drive circuit 303, isolation capacitance 304,
Rectification circuit 401, peak voltage absorbing circuit 402, the 2nd LC filter circuit 403, main control unit 50, shell 60, heat dissipation dress
Set 70, heat-pipe radiator 701 and temperature sensor 702.
Input rectifying unit includes sequentially connected three-phase diode bridge rectifier and the first LC filter circuit.
Power conversion unit further includes the high frequency transformer being connected with high frequency phase-shifting full-bridge inverter, and high frequency phase-shifting full-bridge is inverse
Become device to be used for the first DC voltage inversion as third alternating voltage, and third alternating voltage is transported to high frequency transformer, it is high
Frequency power transformer is used to for third alternating voltage being transformed to the second alternating voltage, and the second alternating voltage is transported to output rectification list
Member, high frequency phase-shifting full-bridge inverter are also connected with gate drive circuit, and gate drive circuit is used to be the inversion of high frequency phase-shifting full-bridge
Device provides driving signal, and the output end of high frequency transformer is also connected with the isolation capacitance for filtering for the second alternating voltage.
Exporting rectification unit includes sequentially connected rectification circuit, peak voltage absorbing circuit and the 2nd LC filter circuit.
Charger further includes the main control connecting respectively with output rectification unit, input rectifying unit and power conversion unit
Unit；Main control unit is used to receive the voltage configuration information of user's input, and the first direct current is arranged based on voltage configuration information
Pressure, the second alternating voltage and the second DC voltage.
Charger includes shell, and input filter unit, input rectifying unit, power conversion unit and output rectification unit are equal
It is set in shell.
Charger further includes being set to the intracorporal radiator of shell, and radiator includes heat-pipe radiator and temperature sensing
Device.
Specifically, carrying out high-frequency harmonic to externally input alternating voltage by input filter unit filters out processing, and will
Alternating voltage after filtering out high-frequency harmonic is transported to input rectifying unit as the first alternating voltage, and main control unit receives user
The first DC voltage, the second alternating voltage and the second direct current is arranged based on voltage configuration information in the voltage configuration information of input
Pressure, input rectifying unit are converted to the first DC voltage according to voltage configuration information, by the first alternating voltage, and by the first direct current
Voltage is transported to power conversion unit, and the first DC voltage inversion is the by the high frequency phase-shifting full-bridge inverter of power conversion unit
Three alternating voltages, and third alternating voltage is transported to high frequency transformer, third alternating voltage is transformed to by high frequency transformer
Two alternating voltages, and the second alternating voltage is transported to output rectification unit, output rectification unit converts the second alternating voltage
For preset second DC voltage, and the second DC voltage is supplied to external equipment.The intracorporal radiator of the shell of charger
Use heat-pipe radiator for charger heat dissipation, it is high-efficient, easy to maintain, and by temperature sensor detection charger temperature,
To take appropriate measures in time when the temperature is excessively high.
In the specific implementation, main control unit includes DSP core circuit board, DSP extension feature board and MVB communication board
(EMD/ESD), MVB communication board is electrically connected with DSP extension feature board.Battery types configuration is provided on DSP extension feature board
Interface, the device address MVB configuration interface and RS232 maintenance interface, charger can be made by configuring interface by battery types
Different types of storage battery power supply.
In one embodiment, as Fig. 3 shows the knot of another kind charger provided by the utility model embodiment
Structure schematic diagram, the charger illustrated in Fig. 3, input filter, that is, above-mentioned input filter unit include inductor filter circuit,
For being filtered to externally input alternating voltage, and using the alternating voltage after filtering processing as the first alternating voltage
It is transported to the i.e. above-mentioned three-phase diode bridge rectifier of diode rectifier circuit.
First alternating voltage is converted to the first DC voltage by diode rectifier circuit, and the first DC voltage passes through lc unit
I.e. above-mentioned first LC filter circuit is filtered, and preliminary filling electrical circuit is that lc unit is pre-charged, after being filtered by lc unit
The first DC voltage be transported to the i.e. above-mentioned high frequency phase-shifting full-bridge inverter of inversion unit.
First DC voltage inversion is third alternating voltage by inversion unit, and third alternating voltage is transported to high frequency and is become
Third alternating voltage is transformed to the second alternating voltage by depressor, high frequency transformer, and the second alternating voltage is transported to and high frequency
Transformer connection includes the rectification circuit of resistance, capacitor and diode, and filters i.e. above-mentioned 2nd LC filter circuit by LC
It is filtered to obtain preset second DC voltage, and the second DC voltage is supplied to external equipment.
Wherein, inversion unit includes the full-bridge inverter there are four IGBT, and one diode of each IGBT inverse parallel uses
Phase shifting full bridge soft switch control strategy substantially reduces the switching loss of IGBT, increase power factor.High frequency transformer is using high
Frequency control technology reduces the volume of magnet unit such as transformer, improves the power density of charger.The primary of high frequency transformer returns
Road is connected with capacitor, which is isolation capacitance, and the capacitor in the rectification circuit of high frequency transformer secondary circuit connection is to absorb
Capacitor, for absorbing the peak voltage of diode in rectification circuit.
Also, the capacitor of lc unit is thin-film capacitor, and the service life is long, and the quantity needed is few, and existing charger power is small,
And the capacitor of rectification unit is generally electrolytic capacitor, the service life is short and needs multiple, and the charger power of the utility model is big, to store
The charger quantity of battery charging can be reduced.
In conclusion above-mentioned charger provided by the embodiment of the utility model, power conversion unit include high frequency transformer,
Using HF power conversion technology, radiator radiates to charger using heat-pipe radiator, and the high frequency of charger
Phase-shifting full-bridge inverter includes four IGBT switching tubes, compares existing charger, is capable of providing biggish charge power.
The charger, the utility model embodiment additionally provide a kind of charging system based on the above embodiment, including
Above-mentioned charger further includes the external equipment connecting with charger, shows provided by the embodiment of the utility model one referring to fig. 4
The structural schematic diagram of kind charging system, including charger 100, and the external equipment 200 being connect with charger.
Wherein, charger is arranged on rail traffic vehicles.
It should be appreciated that Fig. 4 is only a kind of structural schematic diagram of charging system, rather than the exclusive architecture of charging system,
In actual use, in addition to structure shown in Fig. 4, it can also include other function structure, specifically be subject to and actually use situation,
The utility model embodiment is not limited this.
In conclusion the utility model embodiment provides a kind of charging system, including sequentially connected input filter list
Member, input rectifying unit, power conversion unit and output rectification unit, by input filter unit to externally input alternating current
Pressure carries out high-frequency harmonic and filters out processing, and is transported to input as the first alternating voltage for the alternating voltage after high-frequency harmonic is filtered out
First alternating voltage is converted to the first DC voltage by input rectifying unit, and the first DC voltage is conveyed by rectification unit
To power conversion unit, the first DC voltage inversion is preset second alternating voltage, and second is handed over by power conversion unit
Galvanic electricity pressure is transported to output rectification unit, exports rectification unit for the second alternating voltage and is converted to preset second DC voltage,
And the second DC voltage is supplied to external equipment.Since the high frequency phase-shifting full-bridge inverter of charger in the utility model includes
Four IGBT switching tubes compare existing charger, are capable of providing biggish charge power.
In addition, in the description of the utility model embodiment unless specifically defined or limited otherwise, term " installation ",
" connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally connect
It connects；It can be mechanical connection, be also possible to be electrically connected；It can be directly connected, can also indirectly connected through an intermediary, it can
To be the connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood with concrete condition
Concrete meaning in the present invention.
In the description of the present invention, it should be noted that term " on ", "lower", "inner", "outside", " side ", "bottom" etc.
The orientation or positional relationship of instruction is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of description the utility model
It is described with simplifying, rather than the device or element of indication or suggestion meaning must have a particular orientation, with specific orientation structure
It makes and operates, therefore should not be understood as limiting the present invention.In addition, term " first ", " second ", " third " are only used for
Purpose is described, relative importance is not understood to indicate or imply.
Finally, it should be noted that embodiment described above, only specific embodiment of the present utility model, to illustrate this
The technical solution of utility model, rather than its limitations, the protection scope of the utility model is not limited thereto, although referring to aforementioned
The utility model is described in detail in embodiment, those skilled in the art should understand that: it is any to be familiar with this skill
The technical staff in art field within the technical scope disclosed by the utility model, still can be to skill documented by previous embodiment
Art scheme modify or can readily occur in variation or equivalent replacement of some of the technical features；And these modifications,
Variation or replacement, the spirit and model of the utility model embodiment technical solution that it does not separate the essence of the corresponding technical solution
It encloses, should be covered within the scope of the utility model.Therefore, the protection scope of the utility model is answered described is wanted with right
Subject to the protection scope asked.
Claims (10)
1. a kind of charger, which is characterized in that including sequentially connected input filter unit, input rectifying unit, power conversion
Unit and output rectification unit；
The input filter unit is used to carry out high-frequency harmonic to externally input alternating voltage to filter out processing, and will filter out high frequency
The alternating voltage after harmonic wave is transported to the input rectifying unit as the first alternating voltage；
The input rectifying unit is used to first alternating voltage being converted to the first DC voltage, and by first direct current
Voltage is transported to the power conversion unit；
The power conversion unit is used to the first DC voltage inversion be preset second alternating voltage, and by described the
Two alternating voltages are transported to the output rectification unit；Wherein, the power conversion unit includes high frequency phase-shifting full-bridge inverter,
The high frequency phase-shifting full-bridge inverter includes four IGBT switching tubes；
The output rectification unit is used to second alternating voltage being converted to preset second DC voltage, and by described the
Two DC voltages are supplied to external equipment；Wherein, the external equipment includes battery and/or vehicle electrical equipment.
2. charger according to claim 1, which is characterized in that the input rectifying unit includes sequentially connected three-phase
Diode bridge rectifier and the first LC filter circuit.
3. charger according to claim 1, which is characterized in that the power conversion unit further includes and the high frequency displacement
The connected high frequency transformer of phase full-bridge inverter；
The high frequency phase-shifting full-bridge inverter is used to the first DC voltage inversion be third alternating voltage, and by described the
Three alternating voltages are transported to the high frequency transformer；
The high frequency transformer is used to the third alternating voltage being transformed to second alternating voltage, and described second is handed over
Galvanic electricity pressure is transported to the output rectification unit.
4. charger according to claim 3, which is characterized in that the high frequency phase-shifting full-bridge inverter is also connected with gate pole
Driving circuit, the gate drive circuit are used to provide driving signal for the high frequency phase-shifting full-bridge inverter；
The output end of the high frequency transformer is also connected with the isolation capacitance for filtering for second alternating voltage.
5. charger according to claim 1, which is characterized in that the output rectification unit includes sequentially connected rectification
Circuit, peak voltage absorbing circuit and the 2nd LC filter circuit.
6. charger according to claim 1, which is characterized in that the charger further includes rectifying respectively with the output
The main control unit that unit, the input rectifying unit are connected with the power conversion unit；The main control unit is for connecing
First DC voltage, second friendship is arranged based on the voltage configuration information in the voltage configuration information for receiving user's input
Galvanic electricity pressure and second DC voltage.
7. charger according to claim 1, which is characterized in that the charger includes shell, the input filter list
Member, input rectifying unit, power conversion unit and output rectification unit are all set in the shell；
The charger further includes being set to the intracorporal radiator of the shell.
8. charger according to claim 7, which is characterized in that the radiator includes that heat-pipe radiator and temperature pass
Sensor.
9. a kind of charging system, which is characterized in that including such as described in any item chargers of claim 1-8, further include and institute
State the external equipment of charger connection.
10. system according to claim 9, which is characterized in that the charger is arranged on rail traffic vehicles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822138821.8U CN209462065U (en) | 2018-12-18 | 2018-12-18 | Charger and charging system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822138821.8U CN209462065U (en) | 2018-12-18 | 2018-12-18 | Charger and charging system |
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| CN209462065U true CN209462065U (en) | 2019-10-01 |
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| CN201822138821.8U Active CN209462065U (en) | 2018-12-18 | 2018-12-18 | Charger and charging system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110752655A (en) * | 2019-11-11 | 2020-02-04 | 国网河南省电力公司南阳供电公司 | Hybrid energy storage device for realizing alternating-current constant-voltage charging |
| CN111030248A (en) * | 2019-12-30 | 2020-04-17 | 重庆国翰能源发展有限公司 | High-power flexible distribution group charging system for electric automobile |
-
2018
- 2018-12-18 CN CN201822138821.8U patent/CN209462065U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110752655A (en) * | 2019-11-11 | 2020-02-04 | 国网河南省电力公司南阳供电公司 | Hybrid energy storage device for realizing alternating-current constant-voltage charging |
| CN111030248A (en) * | 2019-12-30 | 2020-04-17 | 重庆国翰能源发展有限公司 | High-power flexible distribution group charging system for electric automobile |
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Inventor after: Wang Junshi Inventor after: Wang Yanjin Inventor after: Wang Chengbo Inventor after: Yi Ling Inventor after: Shi Wenwei Inventor after: Zhu Yanxia Inventor after: Wei Dong Inventor before: Wang Junshi Inventor before: Wang Yanjin Inventor before: Wang Chengbo Inventor before: Yi Ling Inventor before: Shi Wenwei Inventor before: Zhu Yanxia Inventor before: Wei Dong |
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| CB03 | Change of inventor or designer information | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 213000 No. 199, Fenglin South Road, Wujin national high tech Industrial Development Zone, Wujin District, Changzhou City, Jiangsu Province Patentee after: Jiangsu Xinyu Alstom Traction System Co.,Ltd. Address before: 213000 No. 199, Fenglin South Road, Wujin national high tech Industrial Development Zone, Wujin District, Changzhou City, Jiangsu Province Patentee before: BOMBARDIER NUG PROPULSION SYSTEM Co.,Ltd. |
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