CN113879151A - New energy automobile charging gun locking mechanism and unlocking control method thereof - Google Patents
New energy automobile charging gun locking mechanism and unlocking control method thereof Download PDFInfo
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- CN113879151A CN113879151A CN202111392999.5A CN202111392999A CN113879151A CN 113879151 A CN113879151 A CN 113879151A CN 202111392999 A CN202111392999 A CN 202111392999A CN 113879151 A CN113879151 A CN 113879151A
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- locking mechanism
- charging gun
- unlocking
- signal
- controller
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- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000012790 confirmation Methods 0.000 claims description 6
- 238000012423 maintenance Methods 0.000 abstract description 4
- 230000002498 deadly effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Images
Classifications
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- 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
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/10—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by the energy transfer between the charging station and the vehicle
- B60L53/14—Conductive energy transfer
- B60L53/16—Connectors, e.g. plugs or sockets, specially adapted for charging electric 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
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/30—Constructional details of charging stations
- B60L53/31—Charging columns specially adapted for electric 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
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/60—Monitoring or controlling charging stations
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
- H01R13/639—Additional means for holding or locking coupling parts together, after engagement, e.g. separate keylock, retainer strap
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/12—Electric charging stations
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/14—Plug-in electric vehicles
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention discloses a locking mechanism of a charging gun of a new energy automobile, wherein a power receiving assembly (1) is provided with a controller (3), a voice device (6) and a large screen (7); the controller (5) is respectively connected with the electronic locking mechanism (21), the button signal assembly (42), the voice device (6) and the large screen (7) through signal lines. The invention also discloses an unlocking control method of the locking mechanism. By adopting the technical scheme, the interlocking mechanism, the voice prompt and the large-screen display are added in the existing charging gun system, so that the problems that the locking and unlocking states of the electronic lock and the mechanical lock of the existing charging gun are not clear, and the experience of inserting and pulling the gun by a user is poor are solved; meanwhile, the invention adds a position judgment signal of the electronic lock, can detect the fault of the electronic lock, and can detect whether the electronic lock is blocked or dead, thereby bringing convenience for maintenance.
Description
Technical Field
The invention belongs to the technical field of charging of new energy automobiles. More specifically, the invention relates to a locking mechanism system of a charging gun of a new energy automobile, which comprises a power receiving assembly, an interlocking mechanism, charging equipment, a button assembly, a controller, a voice device, a large screen and the like. The invention also relates to an unlocking control method of the locking mechanism. Meanwhile, the invention also relates to a charging gun system comprising the charging gun locking mechanism and a vehicle comprising the charging gun system.
Background
The locking mechanism system of the charging gun at present is generally applied to new energy automobiles. According to present charging pile standard, when charging current is greater than 16Ah, the alternating-current charging pile and all direct-current charging piles need to be additionally provided with the electronic locking mechanism, the electronic locking mechanism and the mechanical locking mechanism need to be kept in a locking state in the charging process, and therefore safety problems are prevented from being accidentally pulled down in the charging process. However, the locking mechanism of the existing charging gun is lack of voice or visual prompting function in practical use; the locking and unlocking states of the existing electronic lock and mechanical lock of the charging gun are not clear, and the problems of jamming and deadlocking are easy to occur; the electronic lock has mechanical faults, and the problem cannot be detected in the first time, so that the maintenance is difficult.
In order to solve the charging safety, some technical solutions of electronic locks and mechanical locks are proposed by those skilled in the art. For example: chinese patent document CN 207691113U (application No. 201721410472.X) discloses a charging gun locking system, a vehicle body assembly, and a charging gun. Although the technical solution described in the above document enables a user to operate the charging gun side to unlock the vehicle and the charging gun, it cannot detect the position of the electronic lock, and cannot determine whether the electronic lock is stuck or jammed, which makes maintenance extremely difficult; in addition, voice prompt and large-screen display are not adopted, and user experience is poor.
Disclosure of Invention
The invention provides a locking mechanism of a charging gun of a new energy automobile, and aims to solve the problems that an electronic lock and a mechanical lock of the existing charging gun are not clear, and are easy to block and deadly.
In order to achieve the purpose, the invention adopts the technical scheme that:
according to the locking mechanism of the charging gun of the new energy automobile, the new energy automobile is provided with the power receiving assembly, and the power receiving assembly is matched with the charging gun on the charging equipment and is locked by the locking mechanism; the locking mechanism comprises an electronic locking mechanism, a lock tongue and a mechanical locking mechanism; the charging gun is also provided with a button assembly; the button assembly comprises a trigger button, a button signal assembly and an unlocking button; the unlocking button is used for unlocking and controlling the mechanical locking mechanism; the power receiving assembly is provided with a controller, a voice device and a large screen; the controller is respectively connected with the electronic locking mechanism, the button signal assembly, the voice device and the large screen through signal lines.
The charging equipment is a direct current charging pile or an alternating current charging pile.
The charging gun locking mechanism is applied to a charging gun system of a vehicle; the new energy automobile adopts the charging gun locking mechanism and the charging gun system thereof.
In order to achieve the same purpose as the technical scheme, the invention also provides an unlocking control method of the locking mechanism of the charging gun of the new energy automobile, which comprises the following steps:
step 1, a controller receives an unlocking signal of an electronic locking mechanism;
step 6, the controller informs the reminding module to send an unlocking in-place signal of the electronic locking mechanism and immediately controls the mechanical locking mechanism to unlock;
and 7, when the controller judges that the unlocking of the mechanical locking mechanism is finished, controlling the reminding module to send out a reminding signal of finishing the unlocking, displaying the signal on a large screen, and simultaneously carrying out voice prompt through a voice device.
The unlocking control method of the charging gun locking mechanism is applied to a charging gun system of a vehicle; the new energy automobile adopts the unlocking control method of the charging gun locking mechanism and the charging gun system thereof.
By adopting the technical scheme, the interlocking mechanism, the voice prompt and the large-screen display are added in the existing charging gun system, so that the problems that the locking and unlocking states of an electronic lock and a mechanical lock of the existing charging gun are not clear, and the experience of inserting and pulling the gun by a user is poor are solved; meanwhile, the invention adds a position judgment signal of the electronic lock, can detect the fault of the electronic lock, and can detect whether the electronic lock is blocked or dead, thereby bringing convenience for maintenance.
Drawings
The contents of the drawings and the reference numbers in the drawings are briefly described as follows:
FIG. 1 is a schematic structural view of a locking mechanism of a charging gun according to the present invention in a locked state;
FIG. 2 is a schematic structural view of the locking mechanism of the charging gun of the present invention in an unlockable state;
FIG. 3 is a schematic view of an interlock mechanism of the charging lock mechanism of the present invention;
fig. 4 is a flowchart of an unlocking control method of the locking mechanism of the charging gun according to the present invention.
Labeled as:
1. the device comprises a resistor, 2, an interlocking mechanism, 21, an electronic locking mechanism, 22, a bolt, 23, a mechanical locking mechanism, 3, a charging device (comprising a charging gun), 4, a button assembly, 41, a trigger button, 42, a button signal assembly, 43, an unlocking button, 5, a controller, 6, a voice device, 7 and a large screen.
Detailed Description
The following detailed description of the embodiments of the present invention will be given in order to provide those skilled in the art with a more complete, accurate and thorough understanding of the inventive concept and technical solutions of the present invention.
The structure of the invention as shown in fig. 1 and fig. 2 is a locking mechanism of a charging gun of a new energy automobile, and the locking mechanism of the charging gun is used for locking a charging gun of a charging device and a power receiving component of a new energy automobile waiting for a charging object to be charged, and the locking mechanism is not allowed to be disengaged in a charging process. However, when the charging is completed or the charging needs to be stopped, the unlocking operation should be smoothly performed.
According to the locking mechanism of the charging gun of the new energy automobile, the new energy automobile is provided with a power receiving assembly 1, the power receiving assembly 1 is matched with the charging gun on a charging device 3, and the locking mechanism is locked through the interlocking mechanism 2; the interlocking mechanism 2 comprises an electronic locking mechanism 21, a bolt 22 and a mechanical locking mechanism 23; in the locked state, they form an interlocking mechanism.
The charging gun is also provided with a button assembly 4; the button assembly 4 comprises a trigger button 41, a button signal assembly 42 and an unlocking button 43; the unlocking button 43 is used for unlocking and controlling the mechanical locking mechanism 23; buttons of the mechanical locking mechanism 23 and the electronic locking mechanism 21 are arranged on the side of the charging gun, so that the use by a user is facilitated;
the power receiving component 1 is provided with a controller 3, a voice device 6 and a large screen 7; the controller 5 is respectively connected with the electronic locking mechanism 21, the button signal assembly 42, the voice device 6 and the large screen 7 through signal lines.
The charging equipment 3 is a direct current charging pile or an alternating current charging pile.
After the trigger button 41 is pressed, the first stroke firstly sends out an electronic lock unlocking signal, and the controller 5 receives the signal and detects the position of the electronic locking mechanism 21; if the electronic lock is in the zero position, the electronic lock is pulled to move leftwards, and after the electronic lock reaches the maximum position, the electronic lock is completely opened, and the controller 5 simultaneously detects a vehicle door lock signal of the vehicle; if the door lock is in an open state, the controller 5 sends a signal to the button signal component 42 in the first stroke, and after the signal of the button component 4 passes, the button can be pressed down by a second stroke in the same direction, and the unlocking button 43 is touched by the second stroke, so that the mechanical locking mechanism 23 is unlocked and controlled;
as shown in fig. 3: the electronic locking mechanism 21, the bolt 22 and the mechanical locking mechanism 23 are mutually interacted.
The system adds position signals of the electronic lock mechanism, and effectively judges whether the electronic lock has clamping stagnation or dead clamping phenomenon. Simultaneously, the user is informed of the state of the charging gun locking system in time through voice prompt and large-screen display, and the user experience is greatly improved.
The prompting device of the prompting module is a voice prompting device, can also be a buzzer alarm, or is a vibration alarm.
If the charging equipment 2 is a direct-current charging pile, the direct-current charging pile also comprises a charging pile controller, and the charging pile controller controls the unlocking operation of the electronic locking mechanism 21 according to the judgment result.
If the charging device 2 is an alternating-current charging pile, the object to be charged is an electric vehicle, the electric vehicle comprises a vehicle control unit, and the vehicle control unit controls the unlocking operation of the electronic locking mechanism 21 according to the judgment result.
As shown in fig. 4: in order to achieve the same purpose as the technical scheme, the invention also provides an unlocking control method of the locking mechanism of the charging gun of the new energy automobile, which comprises the following steps:
step 1, the controller 5 receives an unlocking signal of the electronic locking mechanism 21;
step 6, the controller 5 informs the reminding module to send an unlocking in-place signal of the electronic locking mechanism 21, and immediately controls the mechanical locking mechanism 23 to unlock;
and 7, when the controller 5 judges that the unlocking of the mechanical locking mechanism 23 is finished, controlling the reminding module 4 to send out a reminding signal of finishing the unlocking, displaying the signal on the large screen 7, and simultaneously carrying out voice reminding through the voice device 6.
The control process ends.
The unlocking signal of the electronic locking mechanism 21 is: the unlock button 202 is pressed three times in succession, each time with an interval of no more than 10 seconds.
In step 6, when the unlock button 43 is pressed, the connection confirmation signal is turned off, and the mechanical lock mechanism 23 is unlocked.
In the steps 2 to 6, when the determination result is that the connection confirmation signal is disconnected, further determining whether the electronic locking mechanism 21 is unlocked in place; if the electronic locking mechanism 21 is not unlocked in place, controlling the electronic locking mechanism 21 to stop unlocking:
and if the connection confirmation signal is switched on again and the electronic locking mechanism 21 is not unlocked in place, controlling the electronic locking mechanism 21 to unlock until the electronic locking mechanism 21 is unlocked in place.
In the step 5, when the electronic locking mechanism 21 is controlled to stop unlocking, the controller 5 controls the reminding module to send a reminding signal for releasing the unlocking button 43.
The charging gun locking mechanism and the unlocking control method thereof are applied to a new energy automobile of a charging gun system of the automobile, and the charging gun locking mechanism, the unlocking control method thereof and the charging gun system are adopted.
The invention has been described above with reference to the accompanying drawings, it is obvious that the invention is not limited to the specific implementation in the above-described manner, and it is within the scope of the invention to apply the inventive concept and solution to other applications without substantial modification.
Claims (7)
1. A charging gun locking mechanism of a new energy automobile is provided with a power receiving assembly (1), wherein the power receiving assembly (1) is matched with a charging gun on charging equipment (3) and is locked by the locking mechanism; the locking mechanism comprises an electronic locking mechanism (21), a bolt (22) and a mechanical locking mechanism (23); the charging gun is also provided with a button assembly (4); the button assembly (4) comprises a trigger button (41), a button signal assembly (42) and an unlocking button (43); the unlocking button (43) is used for unlocking and controlling the mechanical locking mechanism (23); the method is characterized in that: the power receiving component (1) is provided with a controller (3), a voice device (6) and a large screen (7); the controller (5) is respectively connected with the electronic locking mechanism (21), the button signal assembly (42), the voice device (6) and the large screen (7) through signal lines.
2. The locking mechanism of the new energy automobile charging gun according to claim 1, characterized in that: the charging equipment (3) is a direct current charging pile or an alternating current charging pile.
3. The locking mechanism of the new energy automobile charging gun according to claim 1 or 2, characterized in that: the charging gun locking mechanism is applied to a charging gun system of a vehicle.
4. The locking mechanism of the new energy automobile charging gun according to claim 3, characterized in that: the new energy automobile adopts the charging gun locking mechanism and the charging gun system thereof.
5. The unlocking control method of the locking mechanism of the charging gun of the new energy vehicle as claimed in any one of claims 1 to 4, characterized in that: the unlocking control method comprises the following steps:
step 1, a controller (5) receives an unlocking signal of an electronic locking mechanism (21);
step 2, after receiving the unlocking signal of the electronic locking mechanism (21), judging whether a connection confirmation signal between the charging equipment (3) and the power receiving component (1) is connected or not by the controller (5); if yes, entering step 3; if not, entering step 4;
step 3, the controller (5) controls the electronic locking mechanism (21) to unlock, and meanwhile, an electronic lock position signal is sent to the button signal assembly (42) until the electronic lock is unlocked in place, and then the step 6 is carried out;
step 4, judging whether the electronic locking mechanism (21) is unlocked in place by the controller (5); if yes, go to step 6; if not, entering step 5;
step 5, the controller (5) controls the electronic locking mechanism (21) to stop unlocking, and then the step 2 is returned;
step 6, the controller (5) informs the reminding module to send an unlocking in-place signal of the electronic locking mechanism (21), and immediately controls the mechanical locking mechanism (23) to unlock;
and 7, when the controller (5) judges that the unlocking of the mechanical locking mechanism (23) is completed, controlling the reminding module (4) to send out a reminding signal of the completion of the unlocking, displaying the signal on the large screen (7), and simultaneously carrying out voice reminding through the voice device (6).
6. The unlocking control method of the locking mechanism of the new energy automobile charging gun according to claim 5, characterized in that: the unlocking control method of the charging gun locking mechanism is applied to a charging gun system of a vehicle.
7. The unlocking control method of the locking mechanism of the new energy automobile charging gun according to claim 5, characterized in that: the new energy automobile adopts the unlocking control method of the charging gun locking mechanism and the charging gun system thereof.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111043410 | 2021-09-07 | ||
| CN2021110434100 | 2021-09-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113879151A true CN113879151A (en) | 2022-01-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111392999.5A Pending CN113879151A (en) | 2021-09-07 | 2021-11-23 | New energy automobile charging gun locking mechanism and unlocking control method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113879151A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107666078A (en) * | 2017-10-30 | 2018-02-06 | 蔚来汽车有限公司 | Charging gun locking system, body component and charging gun |
| US20180105055A1 (en) * | 2016-10-19 | 2018-04-19 | Borgward Trademark Holdings Gmbh | Charging control method and device and charging system for electric vehicle |
| CN109888572A (en) * | 2018-12-27 | 2019-06-14 | 蔚来汽车有限公司 | Charging gun locking system and its unlocking method |
| CN211313744U (en) * | 2019-09-30 | 2020-08-21 | 郑州宇通重工有限公司 | Electronic lock control device of electric automobile |
-
2021
- 2021-11-23 CN CN202111392999.5A patent/CN113879151A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20180105055A1 (en) * | 2016-10-19 | 2018-04-19 | Borgward Trademark Holdings Gmbh | Charging control method and device and charging system for electric vehicle |
| CN107666078A (en) * | 2017-10-30 | 2018-02-06 | 蔚来汽车有限公司 | Charging gun locking system, body component and charging gun |
| CN109888572A (en) * | 2018-12-27 | 2019-06-14 | 蔚来汽车有限公司 | Charging gun locking system and its unlocking method |
| CN211313744U (en) * | 2019-09-30 | 2020-08-21 | 郑州宇通重工有限公司 | Electronic lock control device of electric automobile |
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| PB01 | Publication | ||
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Application publication date: 20220104 |