CN110254233A - A kind of power battery protection device, electricity defrosting control system and vehicle - Google Patents
A kind of power battery protection device, electricity defrosting control system and vehicle Download PDFInfo
- Publication number
- CN110254233A CN110254233A CN201810200269.2A CN201810200269A CN110254233A CN 110254233 A CN110254233 A CN 110254233A CN 201810200269 A CN201810200269 A CN 201810200269A CN 110254233 A CN110254233 A CN 110254233A
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- CN
- China
- Prior art keywords
- control
- switch
- low
- circuit
- temperature
- 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.)
- Granted
Links
- 230000005611 electricity Effects 0.000 title claims abstract description 25
- 238000010257 thawing Methods 0.000 title claims abstract description 22
- 238000005485 electric heating Methods 0.000 claims abstract description 29
- 238000000465 moulding Methods 0.000 claims 2
- 230000006378 damage Effects 0.000 abstract description 9
- 239000002699 waste material Substances 0.000 abstract description 4
- 230000005779 cell damage Effects 0.000 abstract description 3
- 208000037887 cell injury Diseases 0.000 abstract description 3
- 238000010438 heat treatment Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 206010037660 Pyrexia Diseases 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L1/00—Supplying electric power to auxiliary equipment of vehicles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
- B60S1/00—Cleaning of vehicles
- B60S1/02—Cleaning windscreens, windows or optical devices
- B60S1/023—Cleaning windscreens, windows or optical devices including defroster or demisting means
- B60S1/026—Cleaning windscreens, windows or optical devices including defroster or demisting means using electrical means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
- B60S1/00—Cleaning of vehicles
- B60S1/02—Cleaning windscreens, windows or optical devices
- B60S1/54—Cleaning windscreens, windows or optical devices using gas, e.g. hot air
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Protection Of Static Devices (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The present invention relates to electric vehicle engineering field, especially a kind of power battery protection device, electricity defrosting control system and vehicle.The vehicle includes power battery and electricity defrosting control system, the control system includes frost removal, high voltage supply circuit, low-voltage control circuit, control module and temperature sensor, frost removal includes electric heating branch and temperature detect switch (TDS), high voltage supply circuit is connected between the positive and negative anodes of power battery, the first control switch and electric heating branch are provided on high voltage supply circuit, low-voltage control circuit setting connects the first control switch by temperature detect switch (TDS) and the second control switch, control module connects temperature sensor and the second control switch, when the electric heating branch temperature exceeds given threshold, control module controls the second control switch and disconnects the low voltage control branch, it solves the problems, such as when the system failure that control switch is opened and closed to lead to damage adhesion high-tension circuit is made to be constantly on state repeatedly and causes energy waste and cell damage.
Description
Technical field
The present invention relates to electric vehicle engineering field, especially a kind of power battery protection device, electricity defrosting control system
And vehicle.
Background technique
Sole energy source of the power battery as pure electric coach, performance are directly related to the continuation of the journey of pure electric coach
Ability and safety, while its accounting reaches the expensive cost of vehicle cost one third, therefore extremely to the protection of power battery
It closes important.In pure electric coach, electricity defrosting, electric heating are the indispensable high voltage components of riding experience, and power battery passes through height
Crimping provides energy directly to electricity defrosting, electric heating.To avoid battery from leading to irreversible damage, high tension loop due to over-discharge
Middle contactor, fuse are in time disconnected and being particularly important.
Temperature detect switch (TDS) in existing frost removal be mostly normally closed type can self-healing temperature switch, as shown in Figure 1, including
High voltage supply circuit and low-voltage control circuit, high voltage supply are provided with control switch on circuit, with control to being arranged in series in height
The electric heating branch power supply on current supply circuit is pressed, low-voltage control circuit control connects first control switch, and low voltage control is returned
Road be provided with temperature detect switch (TDS), the temperature detect switch (TDS) be normally closed type can self-healing temperature switch, temperature control is opened when the temperature is excessively high
Shutdown is opened, and frost removal temperature detect switch (TDS) after temperature reduction can be closed the conducting for realizing DC low-voltage circuit automatically, leads to contactor
Closure and DC high-voltage circuit conducting, to heater power, in the case where no solution system failure, DC high-voltage circuit
Conducting can still result in the disconnection of heater overheat and temperature detect switch (TDS), and repetitious recovery, disconnection are easy to cause contactor more
Secondary high current band damages after carrying cutting.
The simplest mode that solves the above problems be by normally closed type can self-healing temperature switch change normally closed type into cannot
Self-healing temperature switch, having Chinese patent notification number is that the patent document of CN202574142U discloses a kind of high pressure electrothermal
Frost removal works as the system failure, fever temperature is high by accessing the not self-healing temperature detect switch (TDS) of normally closed type in DC low-voltage circuit
When setting value, DC low-voltage circuit disconnection is controlled, to control D.C. contactor disconnection, stops powering to heater,
Solve the problems, such as that above-mentioned normally closed type can be brought by self-healing temperature switch, but due to the limit by frost removal manufacturer
System, can not by the normally closed type can self-healing temperature switch change into can not self-healing temperature switch therefore using
It still will appear the phenomenon that closure disconnects repeatedly in the process, contactor caused to generate adhesion, entire DC high-voltage circuit is in and connects
Logical state, is easy to cause electric power over-discharge, leads to energy waste, and when power supply unit is battery, over-discharge can generate battery can not
The damage of reverse, causes greater loss.
Summary of the invention
The object of the present invention is to provide a kind of power battery protection device, electricity defrosting control system and vehicles, to solve
Control switch is opened and closed repeatedly and leads to damage adhesion and make high-tension circuit be constantly on state to cause energy waste when the system failure
And the problem of cell damage.
To achieve the above object, the solution of the present invention includes:
A kind of power battery protection device, including high voltage supply circuit, low-voltage control circuit and temperature sensor, the height
It is provided with the first control switch on pressure current supply circuit, to control power battery to being arranged in series on the high voltage supply circuit
The power supply of electric heating branch, the low-voltage control circuit control connect first control switch, use on the low-voltage control circuit
In setting temperature detect switch (TDS), the temperature sensor further includes control mould for detecting the electric heating branch temperature, described device
Block, the low voltage control branch road are provided with the second control switch, and the input terminal of second control switch connects the control
The input terminal of the output end of module, the control module connects the temperature sensor, when the electric heating branch temperature exceeds
When given threshold, control module controls the second control switch and disconnects the low voltage control branch.The first control is effectively prevented to open
Closing damage adhesion causes high voltage supply circuit in the conductive state for a long time, avoids the hair that power battery is damaged by over-discharge
Raw, control switch be opened and closed repeatedly and causes damage adhesion that high-tension circuit is made to be constantly on state to cause when solving the system failure
The problem of energy waste and cell damage.
As a kind of improvement of power battery protection device provided by the invention, it is additionally provided on the low-voltage control circuit
Rocker switch facilitates the unlatching of the protective device to control to control the on-off of the low-voltage control circuit.
As a kind of further improvement of power battery protection device provided by the invention, gone back on the high voltage supply circuit
It is provided with fuse, guarantees that high voltage supply circuit disconnects under abnormal current situation, prevents the damage of circuit and battery.
Another step as a kind of power battery protection device provided by the invention is improved, and first control switch is the
One contactor, second control switch are second contactor.
A kind of electricity defrosting control system, including frost removal, high voltage supply circuit, low-voltage control circuit and temperature sensor,
The frost removal includes electric heating branch and temperature detect switch (TDS), and the first control switch and described is provided on the high voltage supply circuit
Electric heating branch, the low-voltage control circuit control connect first control switch and the temperature detect switch (TDS), and the temperature passes
For sensor for detecting the electric heating branch temperature, the control system further includes control module, the low voltage control branch road
It is provided with the second control switch, the input terminal of second control switch connects the output end of the control module, the control
The input terminal of module connects the temperature sensor, when the electric heating branch temperature exceeds given threshold, control module control
It makes the second control switch and disconnects the low voltage control branch.
As a kind of improvement of electricity defrosting control system provided by the invention, it is additionally provided with and sticks up on the low-voltage control circuit
Switching plate, to control the on-off of the low-voltage control circuit.
As a kind of further improvement of electricity defrosting control system provided by the invention, also set on the high voltage supply circuit
It is equipped with fuse.
As a kind of another step improvement of electricity defrosting control system provided by the invention, first control switch is first
Contactor, second control switch are second contactor.
As a kind of another step improvement of electricity defrosting control system provided by the invention, the control module is full-vehicle control
Device.
A kind of vehicle, including power battery and electricity defrosting control system, the control system includes frost removal, high voltage supply
Circuit, low-voltage control circuit and temperature sensor, the frost removal include electric heating branch and temperature detect switch (TDS), the power battery
Positive and negative anodes between be connected with the high voltage supply circuit, the first control switch and described is provided on the high voltage supply circuit
Electric heating branch, the low-voltage control circuit control connect first control switch and the temperature detect switch (TDS), and the temperature passes
For sensor for detecting the electric heating branch temperature, the control system further includes control module, the low voltage control branch road
It is provided with the second control switch, the input terminal of second control switch connects the output end of the control module, the control
The input terminal of module connects the temperature sensor, when the electric heating branch temperature exceeds given threshold, control module control
It makes the second control switch and disconnects the low voltage control branch.
As a kind of improvement of vehicle provided by the invention, it is additionally provided with rocker switch on the low-voltage control circuit, with
Control the on-off of the low-voltage control circuit.
As a kind of further improvement of vehicle provided by the invention, fusing is additionally provided on the high voltage supply circuit
Device.
As a kind of another step improvement of vehicle provided by the invention, first control switch is first contactor, institute
Stating the second control switch is second contactor.
As a kind of another step improvement of vehicle provided by the invention, the control module is entire car controller.
Detailed description of the invention
Fig. 1 is the electric control theory figure of frost removal in the prior art；
Fig. 2 is a kind of electric control theory figure of electricity defrosting control system.
Specific embodiment
The present invention will be further described in detail with reference to the accompanying drawing.
The present invention provides a kind of vehicle, which includes power battery and electricity defrosting control system, electricity defrosting control system
System connects between the positive and negative anodes of power battery as shown in Fig. 2, including frost removal 1, high voltage supply circuit and low-voltage control circuit
Be connected to high voltage supply circuit, and be provided on the high voltage supply circuit in the first control switch and frost removal 1 by series resistance R
Constitute electric heating branch；It further include temperature detect switch (TDS) D in the frost removal 1, temperature detect switch (TDS) D is a kind of normally closed self-healing temperature
Switch；Temperature detect switch (TDS) D is arranged on low-voltage control circuit, and the second control switch is additionally provided on the low-voltage control circuit and is stuck up
Switching plate LS1A, the low-voltage control circuit one end connect 24V voltage, and the other end is grounded by the control terminal of the first control switch.
It is additionally provided with temperature sensor in the control system, for detecting the temperature of electric heating branch, as shown in Fig. 2, will
Temperature sensor I is set to the inside of frost removal 1, and temperature sensor I can be a part of frost removal 1, is also possible to solely
Stand on the setting of frost removal 1.
On the basis of the above, preferably above-mentioned first control switch is first contactor K1, and above-mentioned second control is opened
Closing is second contactor K2.Meanwhile it being also provided with fuse F on above-mentioned high voltage supply circuit, to improve to high-tension circuit
Protection.
The control system further includes control module, and preferably the control module is vehicle VCU.Above-mentioned temperature sensor I can lead to
It crosses instrument detection signal and is communicated with vehicle VCU, connection temperature sensor I directly directly can also be sampled by vehicle VCU,
The output end of vehicle VCU connects the control terminal of above-mentioned second contactor K2.
If temperature sensor connects vehicle VCU by instrument, when temperature sensor I detects above-mentioned electric heating branch
When temperature exceeds given threshold, excess temperature signal is passed to instrument by temperature sensor T, and instrument passes to vehicle by message form
VCU, vehicle VCU issue control signal, and control second contactor K2 disconnects low voltage control branch, and power battery stops to frost removal
Electric power is provided, electricity defrosting stops working.The instrument is also connected with buzzer, issues alarm when the temperature is excessively high, prompts driver.
The position of above-mentioned second contactor K2 is not limited only to shown in Fig. 2, can be connected on first contactor K1 and low pressure
Any position between control loop feeder ear.
When heating branch operation irregularity of the control system in frost removal 1, stops battery power supply, prevents battery over-discharge,
It is a kind of device for being effectively protected power battery.
Above-mentioned electric heating branch is not only present in frost removal 1, is equally existed in the heater of vehicle, therefore, above-mentioned
Circuit connecting mode in control system is equally applicable to the control to heater, prevents battery case heating installation power supply failure from causing
Battery over-discharge and damage.
Specific embodiment of the present invention is presented above, but the present invention is not limited to described embodiment.
Under the thinking that the present invention provides, to the skill in above-described embodiment by the way of being readily apparent that those skilled in the art
Art means are converted, are replaced, are modified, and play the role of with the present invention in relevant art means it is essentially identical, realize
Goal of the invention it is also essentially identical, the technical solution formed in this way is to be finely adjusted to be formed to above-described embodiment, this technology
Scheme is still fallen in protection scope of the present invention.
Claims (10)
1. a kind of power battery protection device, including high voltage supply circuit, low-voltage control circuit and temperature sensor, the high pressure
The first control switch is provided on current supply circuit, to control power battery to the electricity being arranged in series on the high voltage supply circuit
Branch power supply is heated, the low-voltage control circuit control connects first control switch, is used on the low-voltage control circuit
Temperature detect switch (TDS) is set, and the temperature sensor is for detecting the electric heating branch temperature, which is characterized in that described device is also wrapped
Control module is included, the low voltage control branch road is provided with the second control switch, the input terminal connection of second control switch
The input terminal of the output end of the control module, the control module connects the temperature sensor, when the electric heating branch
When temperature exceeds given threshold, control module controls the second control switch and disconnects the low voltage control branch.
2. power battery protection device according to claim 1, which is characterized in that also set up on the low-voltage control circuit
There is rocker switch, to control the on-off of the low-voltage control circuit.
3. power battery protection device according to claim 1 or 2, which is characterized in that on the high voltage supply circuit also
It is provided with fuse.
4. power battery protection device according to claim 1 or 2, which is characterized in that first control switch is the
One contactor, second control switch are second contactor.
5. a kind of electricity defrosting control system, including frost removal, high voltage supply circuit, low-voltage control circuit and temperature sensor, institute
Stating frost removal includes electric heating branch and temperature detect switch (TDS), is provided with the first control switch and the electricity on the high voltage supply circuit
Branch is heated, the low-voltage control circuit control connects first control switch and the temperature detect switch (TDS), the temperature sensing
Device is for detecting the electric heating branch temperature, which is characterized in that the control system further includes control module, the low pressure control
Branch road processed is provided with the second control switch, and the input terminal of second control switch connects the output end of the control module,
The input terminal of the control module connects the temperature sensor, when the electric heating branch temperature exceeds given threshold, control
Molding block controls the second control switch and disconnects the low voltage control branch.
6. electricity defrosting control system according to claim 5, which is characterized in that be additionally provided on the low-voltage control circuit
Rocker switch, to control the on-off of the low-voltage control circuit.
7. electricity defrosting control system according to claim 5 or 6, which is characterized in that also set on the high voltage supply circuit
It is equipped with fuse.
8. a kind of vehicle, including power battery and electricity defrosting control system, the control system include frost removal, high voltage supply time
Road, low-voltage control circuit and temperature sensor, the frost removal include electric heating branch and temperature detect switch (TDS), the power battery
It is connected with the high voltage supply circuit between positive and negative anodes, is provided with the first control switch and the electricity on the high voltage supply circuit
Branch is heated, the low-voltage control circuit control connects first control switch and the temperature detect switch (TDS), the temperature sensing
Device is for detecting the electric heating branch temperature, which is characterized in that the control system further includes control module, the low pressure control
Branch road processed is provided with the second control switch, and the input terminal of second control switch connects the output end of the control module,
The input terminal of the control module connects the temperature sensor, when the electric heating branch temperature exceeds given threshold, control
Molding block controls the second control switch and disconnects the low voltage control branch.
9. vehicle according to claim 8, which is characterized in that it is additionally provided with rocker switch on the low-voltage control circuit,
To control the on-off of the low-voltage control circuit.
10. vehicle according to claim 8 or claim 9, which is characterized in that be additionally provided with fusing on the high voltage supply circuit
Device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810200269.2A CN110254233B (en) | 2018-03-12 | 2018-03-12 | Power battery protection device, electric defrosting control system and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810200269.2A CN110254233B (en) | 2018-03-12 | 2018-03-12 | Power battery protection device, electric defrosting control system and vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110254233A true CN110254233A (en) | 2019-09-20 |
| CN110254233B CN110254233B (en) | 2024-04-19 |
Family
ID=67911473
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810200269.2A Active CN110254233B (en) | 2018-03-12 | 2018-03-12 | Power battery protection device, electric defrosting control system and vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110254233B (en) |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5991509A (en) * | 1996-08-30 | 1999-11-23 | Matsushita Electric Industrial Co., Ltd. | Temperature adjusting system adapted for use in an electric vehicle and the like |
| US6163013A (en) * | 1992-12-07 | 2000-12-19 | Navistar International Transportation Corp | Continuous duty direct current heated windshield with ambient temperature limit switch |
| US20030155467A1 (en) * | 2002-02-11 | 2003-08-21 | Victor Petrenko | Systems and methods for modifying an ice-to-object interface |
| CN102529641A (en) * | 2011-11-15 | 2012-07-04 | 中国第一汽车集团公司新能源汽车分公司 | Automobile warm air control method and automobile warm air control device |
| CN202574142U (en) * | 2012-03-07 | 2012-12-05 | 桂林客车工业集团有限公司 | High-voltage electrothermal defroster |
| CN103507642A (en) * | 2013-09-13 | 2014-01-15 | 郑州宇通客车股份有限公司 | Electric defrosting energy-saving control system, electric defrosting energy-saving control method and electric automobile using the system |
| US20150239405A1 (en) * | 2014-02-27 | 2015-08-27 | Mitsubishi Jidosha Kogyo Kabushiki Kaisha | Vehicle electric battery controlling apparatus |
| CN105711375A (en) * | 2016-01-26 | 2016-06-29 | 郑州宇通客车股份有限公司 | Dedicated electric vehicle and energy-saving temperature adjustment system and method thereof |
| CN106427475A (en) * | 2016-11-24 | 2017-02-22 | 郑州比克新能源汽车有限公司 | Device and method for double protection of PTC (Positive Temperature Coefficient) heater of electric vehicle |
| CN106926663A (en) * | 2017-03-03 | 2017-07-07 | 珠海禾创科技有限公司 | Pure electric coach warm-air drier |
| CN206568900U (en) * | 2017-01-20 | 2017-10-20 | 郑州宇通客车股份有限公司 | It is a kind of to prevent battery from crossing the device put |
| CN206734261U (en) * | 2017-03-03 | 2017-12-12 | 珠海禾创科技有限公司 | The energy-saving high-tension electricity frost removal of pure electric coach |
| CN208198113U (en) * | 2018-03-12 | 2018-12-07 | 郑州宇通客车股份有限公司 | Power battery protection device, electricity defrosting control system and vehicle |
-
2018
- 2018-03-12 CN CN201810200269.2A patent/CN110254233B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6163013A (en) * | 1992-12-07 | 2000-12-19 | Navistar International Transportation Corp | Continuous duty direct current heated windshield with ambient temperature limit switch |
| US5991509A (en) * | 1996-08-30 | 1999-11-23 | Matsushita Electric Industrial Co., Ltd. | Temperature adjusting system adapted for use in an electric vehicle and the like |
| US20030155467A1 (en) * | 2002-02-11 | 2003-08-21 | Victor Petrenko | Systems and methods for modifying an ice-to-object interface |
| CN102529641A (en) * | 2011-11-15 | 2012-07-04 | 中国第一汽车集团公司新能源汽车分公司 | Automobile warm air control method and automobile warm air control device |
| CN202574142U (en) * | 2012-03-07 | 2012-12-05 | 桂林客车工业集团有限公司 | High-voltage electrothermal defroster |
| CN103507642A (en) * | 2013-09-13 | 2014-01-15 | 郑州宇通客车股份有限公司 | Electric defrosting energy-saving control system, electric defrosting energy-saving control method and electric automobile using the system |
| US20150239405A1 (en) * | 2014-02-27 | 2015-08-27 | Mitsubishi Jidosha Kogyo Kabushiki Kaisha | Vehicle electric battery controlling apparatus |
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| CN106427475A (en) * | 2016-11-24 | 2017-02-22 | 郑州比克新能源汽车有限公司 | Device and method for double protection of PTC (Positive Temperature Coefficient) heater of electric vehicle |
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| CN106926663A (en) * | 2017-03-03 | 2017-07-07 | 珠海禾创科技有限公司 | Pure electric coach warm-air drier |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN110254233B (en) | 2024-04-19 |
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Country or region after: China Address after: No. 6, Yutong Road, Guancheng Hui District, Zhengzhou, Henan 450061 Applicant after: Yutong Bus Co.,Ltd. Address before: 450016 Yutong Road, Guancheng District, Zhengzhou City, Henan Province Applicant before: ZHENGZHOU YUTONG BUS Co.,Ltd. Country or region before: China |
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