CN111845442B - Discharging control method, system and equipment and electric automobile - Google Patents
Discharging control method, system and equipment and electric automobile Download PDFInfo
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- CN111845442B CN111845442B CN201910355664.2A CN201910355664A CN111845442B CN 111845442 B CN111845442 B CN 111845442B CN 201910355664 A CN201910355664 A CN 201910355664A CN 111845442 B CN111845442 B CN 111845442B
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- 238000007599 discharging Methods 0.000 title claims abstract description 89
- 238000000034 method Methods 0.000 title claims abstract description 37
- 238000012544 monitoring process Methods 0.000 claims abstract description 15
- 230000006870 function Effects 0.000 claims description 70
- 238000001514 detection method Methods 0.000 claims description 10
- 230000002457 bidirectional effect Effects 0.000 claims description 6
- 230000000903 blocking effect Effects 0.000 claims description 6
- 238000004590 computer program Methods 0.000 claims description 6
- 230000001960 triggered effect Effects 0.000 claims description 6
- 206010014357 Electric shock Diseases 0.000 abstract description 8
- 230000008569 process Effects 0.000 abstract description 7
- 238000011161 development Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000295 fuel oil Substances 0.000 description 2
- 208000003443 Unconsciousness Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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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
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention provides a discharge control method, a system and equipment and an electric automobile, and relates to the technical field of automobiles. The discharge control method includes: when the discharging gun is connected with a charging port of a vehicle to be discharged, sending a locking signal to a charging port control unit CMU, wherein the locking signal indicates the CMU to lock an electronic lock, and the electronic lock is in a locking state; when the electronic lock is in a locked state, monitoring an unlocking request signal sent by a PEPS (Passive entry and Passive Start) system, and detecting the current alternating current value of a charging port; and when the unlocking request signal is acquired and the current alternating current value is detected to be smaller than the preset current, an unlocking signal is sent to the CMU, the unlocking signal indicates the CMU to open the electronic lock, and the electronic lock is in an unlocking state. According to the embodiment of the invention, the state of the electronic lock is controlled in the process of discharging the vehicle to the outside, so that the discharging gun is prevented from being plugged in and out in a hot-line manner, and the risk of electric shock is reduced; the embodiment of the invention also has the anti-theft function of the discharging gun, thereby protecting the property safety of users.
Description
Technical Field
The invention relates to the technical field of automobiles, in particular to a discharge control method, a system and equipment and an electric automobile.
Background
With the development of science and technology, automobiles become indispensable transportation means in daily life of people; because fuel oil is used as a non-renewable resource, in order to reduce the usage amount of fuel oil, more and more automobile manufacturers gradually focus on research and production of pure electric vehicles.
The power battery of the electric automobile provides power for the driving system, and the requirements of driving and comfort of a user are met. With the rapid development of electric vehicle technology and the improvement of endurance mileage, the electric vehicle has more and more extended functions, so that it is very important to design a system for prohibiting the hot plugging of a user.
Disclosure of Invention
The embodiment of the invention provides a discharge control method, a system and equipment and an electric automobile, which are used for solving the problem of electric shock risk caused by the fact that a discharge gun is electrically plugged in and out in the process of discharging the vehicle to the outside.
In order to solve the above technical problem, an embodiment of the present invention provides a discharge control method, including:
when a discharging gun is connected with a charging port of a vehicle to be discharged, sending a locking signal to a charging port control unit (CMU), wherein the locking signal indicates the CMU to lock an electronic lock, and the electronic lock is in a locking state;
when the electronic lock is in the locking state, monitoring an unlocking request signal sent by a PEPS (passive entry system) and detecting the current alternating current value of a charging port;
and when the unlocking request signal is obtained and the current alternating current value is detected to be smaller than the preset current, an unlocking signal is sent to the CMU, the unlocking signal indicates the CMU to open the electronic lock, and the electronic lock is in an unlocking state.
Further, after acquiring the unlocking request signal, the method further comprises:
and sending a control signal to a bidirectional inversion controller BOBC, wherein the control signal is used for indicating the BOBC to stop discharging within a preset time.
Further, before sending the latching signal to the CMU, the method further includes:
detecting the state information of the anti-theft function of the discharging gun of the anti-theft sub-unit of the discharging gun on the entertainment control unit EHU;
and if the state information of the anti-theft function of the discharging gun indicates that the anti-theft function is started, sending a locking signal to the CMU.
Further, the method further comprises:
if the state information of the anti-theft function of the discharge gun indicates that the anti-theft function is closed, detecting discharge enabling information triggered when a discharge button is pressed;
and if the discharging enabling information is detected, sending a blocking signal to the CMU.
Further, when the electronic lock is in a locked state, the method further includes:
detecting current discharge state data;
if the current discharge state meets the preset discharge cutoff condition according to the current discharge state data, detecting the state information of the discharge gun anti-theft function of a discharge gun anti-theft subunit on the entertainment control unit EHU;
and if the state information of the anti-theft function of the discharging gun indicates that the anti-theft function is closed, sending an unlocking signal to the CMU, wherein the unlocking signal indicates the CMU to open the electronic lock.
Further, the method further comprises:
and if the state information of the anti-theft function of the discharging gun indicates that the anti-theft function is started, monitoring an unlocking request signal sent by the PEPS, and detecting the current value of the current of the charging port.
An embodiment of the present invention further provides a discharge control system, including:
the charging system comprises a first sending module, a charging port control unit CMU and a control module, wherein the first sending module is used for sending a locking signal to the CMU when a discharging gun is connected with a charging port of a vehicle to be discharged, the locking signal indicates that the CMU locks an electronic lock, and the electronic lock is in a locking state;
the monitoring module is used for monitoring an unlocking request signal sent by a PEPS (passive entry system) when the electronic lock is in the locking state and detecting the current alternating current value of the charging port;
the second sending module is used for sending an unlocking signal to the CMU when the unlocking request signal is obtained and the current alternating current value is detected to be smaller than the preset current, wherein the unlocking signal indicates the CMU to unlock the electronic lock, and the electronic lock is in an unlocking state.
Further, the system further comprises:
and the third sending module is used for sending a control signal to a bidirectional inverter controller BOBC, wherein the control signal is used for indicating the BOBC to stop discharging within a preset time.
Further, the system further comprises:
the first detection module is used for detecting the state information of the anti-theft function of the discharging gun of the anti-theft sub-unit of the discharging gun on the entertainment control unit EHU;
and if the state information of the anti-theft function of the discharging gun indicates that the anti-theft function is started, sending a locking signal to the CMU.
Further, the system further comprises:
the second detection module is used for detecting discharge enabling information triggered when the discharge button is pressed if the state information of the anti-theft function of the discharge gun indicates that the anti-theft function is closed;
and if the discharging enabling information is detected, sending a blocking signal to the CMU.
Further, the system further comprises:
the third detection module is used for detecting the current discharge state data;
if the current discharge state meets the preset discharge cutoff condition according to the current discharge state data, detecting the state information of the discharge gun anti-theft function of a discharge gun anti-theft subunit on the entertainment control unit EHU;
if the state information of the anti-theft function of the discharging gun indicates that the anti-theft function is closed, an unlocking signal is sent to the CMU, and the unlocking signal indicates the CMU to open the electronic lock;
and if the state information of the anti-theft function of the discharging gun indicates that the anti-theft function is started, monitoring an unlocking request signal sent by the PEPS, and detecting the current value of the charging port.
An embodiment of the present invention further provides a control device, including: the discharge control device comprises a memory, a processor and a computer program stored on the memory and capable of running on the processor, wherein the processor executes the computer program to realize the discharge control method.
The embodiment of the invention also provides an electric automobile which comprises the discharge control system.
The invention has the beneficial effects that:
according to the scheme, the locking of the electronic lock is controlled in the process of discharging the vehicle to the outside, so that the discharging gun is prevented from being plugged in and pulled out in a hot-line manner, and the risk of electric shock is reduced; the embodiment of the invention also adds the anti-theft function of the discharging gun and protects the property safety of users.
Drawings
FIG. 1 is a flow chart of a discharge control method according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a discharge control system according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
The invention provides a discharge control method, a system, equipment and an electric automobile, aiming at the problem that in the process of discharging the vehicle to the outside, the discharge gun is electrified and unplugged, so that the risk of electric shock exists.
As shown in fig. 1, an embodiment of the present invention provides a discharge control method, including:
One end of the discharge gun is configured as an interface capable of being connected to an ac charging port of a vehicle, and the other end of the discharge gun is connected to a socket, so that an external electric device (such as a household appliance) to be charged is connected to the socket, and the purpose that the electric device obtains power from the vehicle to be discharged can be achieved.
It should be further noted that, in order to guarantee the safety problem of the vehicle in the process of discharging to the outside and prevent the discharging gun from being plugged in a live mode, an electronic lock is arranged at the CMU, and when the electronic lock is locked, the discharging gun cannot be pulled out, so that the risk of electric shock of personnel is fundamentally avoided. Specifically, an electronic lock indicator light is arranged on the electronic lock, and when the electronic lock is in a locked state, the electronic lock indicator light is in a first preset color; when the electronic lock is in the unlocking state, the electronic lock indicator light is in a second preset color. Preferably, the first preset color may be red, and the second preset color may be green.
Specifically, in order to prevent the loss of the charging gun before the discharge starts, before sending the latching signal to the CMU, the method further comprises:
detecting the state information of the anti-theft function of the discharging gun of the anti-theft subunit of the discharging gun on the entertainment control unit EHU;
and if the state information of the anti-theft function of the discharging gun indicates that the anti-theft function is started, sending a locking signal to the CMU.
If the state information of the anti-theft function of the discharge gun indicates that the anti-theft function is closed, detecting discharge enabling information triggered when a discharge button is pressed;
and if the discharging enabling information is detected, sending a blocking signal to the CMU.
It should be noted that the discharge button may be disposed at a center console of the vehicle, and a function of the button is indicated, so as to facilitate the operation of the user.
According to whether the rifle theftproof function of discharging opens, be connected to and begin to discharge to the outside at the mouth that charges of carrying out the rifle and waiting to discharge the vehicle, there are two kinds of situations:
in the first situation, when the anti-theft function of the discharging gun is started, as long as the discharging gun is connected with the charging port of the vehicle to be discharged, the vehicle control unit sends a locking signal to the CMU to control the CMU to lock the electronic lock, and the electronic lock is in a locking state.
In the second situation, when the anti-theft function of the discharging gun is closed, after the discharging gun is connected with a charging port with a discharging vehicle, if a discharging button is not pressed down, the vehicle does not enter an external discharging state, the charging port has no current, and a user can pull out the discharging gun at the moment; if the discharging button is pressed, the vehicle enters an external discharging state, the charging port has current, the vehicle control unit sends a locking signal to the CMU at the moment, the CMU is controlled to lock the electronic lock, the electronic lock is in the locking state, and discharging starts. In this case, the electronic lock is in the locked state only when the discharging button is pressed.
it should be noted that, in the embodiment of the present invention, when a user needs to actively suspend discharging, the electronic lock needs to be controlled to unlock by the remote control key. The remote control key is used for controlling the states of the vehicle door and the trunk. To distinguish from the above-described operation, the unlocking operation of the discharge gun may be preferably completed by a combination of keys, such as pressing some two keys at the same time, decoupled from the door state.
In order to ensure the safety of personnel and prevent electric shock, the current alternating current value of a charging port connected with the discharging gun needs to be detected, and preferably, the current value needs to be lower than 1A.
It should be noted that, when the vehicle control unit receives an unlocking request signal sent by a user through the remote control key and the current value of the charging port is lower than 1A, the CMU is controlled to unlock the electronic lock, and at this time, the user may perform an operation of pulling out the discharging gun.
In particular, to further reduce the risk of electric shock, it is necessary to ensure that the vehicle has stopped discharging. After the unlocking request signal is acquired, the method further comprises the following steps:
sending a control signal to a bidirectional inverter controller BOBC, wherein the control signal is used for instructing the BOBC to stop discharging within a preset time, and preferably, the preset time may be set to 100 ms.
In the embodiment of the invention, in order to prevent the power battery from being excessively discharged or the residual electric quantity is insufficient to support the driving of the user due to the unconscious discharge of the user, which brings unnecessary trouble to the user, the user can set the discharge cut-off condition in a self-defined way before the discharge, specifically, the discharge time is not more than the preset time, or the discharge electric quantity is not more than the preset electric quantity, so that the discharge can not influence the normal use of the user. In the process of vehicle external discharge, when the electronic lock is in a locked state, there is a passive discharge stopping condition reaching a preset discharge cut-off condition, and the method further comprises:
detecting current discharge state data;
if the current discharge state meets the preset discharge cutoff condition according to the current discharge state data, detecting the state information of the discharge gun anti-theft function of a discharge gun anti-theft subunit on the entertainment control unit EHU;
and if the state information of the anti-theft function of the discharging gun indicates that the anti-theft function is closed, sending an unlocking signal to the CMU, wherein the unlocking signal indicates the CMU to open the electronic lock.
And if the state information of the anti-theft function of the discharging gun indicates that the anti-theft function is started, monitoring an unlocking request signal sent by the PEPS, and detecting the current value of the charging port.
It should be noted that, according to whether the anti-theft function of the discharging gun is turned on, the discharging state at present satisfies the preset discharging cutoff condition, and the discharging is stopped passively, including two situations:
in the first situation, when the anti-theft function of the discharge gun is started and the current discharge state meets the preset discharge cutoff condition, the discharge is stopped, the electronic lock is still in a locked state at the moment, and the discharge gun can be pulled out only after a user sends an unlocking request signal through a remote control key.
In the second situation, when the anti-theft function of the discharging gun is closed and the current discharging state meets the preset discharging cutoff condition, discharging is stopped, and the discharging gun can be pulled out without a user sending an unlocking request signal through a remote control key.
An embodiment of the present invention further provides a discharge control system, including:
a first sending module 21, configured to send a locking signal to a charging port control unit CMU when a discharging gun is connected to a charging port of a vehicle to be discharged, where the locking signal indicates that the CMU locks an electronic lock, and the electronic lock is in a locked state;
the monitoring module 22 is configured to monitor an unlocking request signal sent by a smart key system PEPS when the electronic lock is in the locked state, and detect a current ac current value of the charging port;
the second sending module 23 is configured to send an unlocking signal to the CMU when the unlocking request signal is obtained and the current ac current value is detected to be smaller than a preset current, where the unlocking signal indicates that the CMU opens the electronic lock, and the electronic lock is in an unlocked state.
Specifically, the system further comprises:
and the third sending module is used for sending a control signal to a bidirectional inverter controller BOBC, wherein the control signal is used for indicating the BOBC to stop discharging within a preset time.
The first detection module is used for detecting the state information of the anti-theft function of the discharging gun of the anti-theft sub-unit of the discharging gun on the entertainment control unit EHU;
and if the state information of the anti-theft function of the discharging gun indicates that the anti-theft function is started, sending a locking signal to the CMU.
The second detection module is used for detecting discharge enabling information triggered when the discharge button is pressed if the state information of the anti-theft function of the discharge gun indicates that the anti-theft function is closed;
and if the discharging enabling information is detected, sending a blocking signal to the CMU.
The third detection module is used for detecting the current discharge state data;
if the current discharge state meets the preset discharge cutoff condition according to the current discharge state data, detecting the state information of the discharge gun anti-theft function of a discharge gun anti-theft subunit on the entertainment control unit EHU;
if the state information of the anti-theft function of the discharging gun indicates that the anti-theft function is closed, an unlocking signal is sent to the CMU, and the unlocking signal indicates the CMU to open the electronic lock;
and if the state information of the anti-theft function of the discharging gun indicates that the anti-theft function is started, monitoring an unlocking request signal sent by the PEPS, and detecting the current value of the charging port.
In order to achieve the above object, an embodiment of the present invention further provides a control device, including: the discharge control device comprises a memory, a processor and a computer program which is stored on the memory and can run on the processor, wherein the processor realizes the discharge control method when executing the computer program.
The embodiment of the invention also provides an electric automobile which comprises the discharge control system.
The automobile provided with the discharge control system controls the locking of the electronic lock in the process of discharging the automobile to the outside, so that the discharge gun is prevented from being plugged in and pulled out in a hot-line manner, and the risk of electric shock is reduced; the embodiment of the invention also adds the anti-theft function of the discharging gun and protects the property safety of users.
While the preferred embodiments of the present invention have been described, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the following claims.
Claims (10)
1. A discharge control method, comprising:
when a discharging gun is connected with a charging port of a vehicle to be discharged, sending a locking signal to a charging port control unit (CMU), wherein the locking signal indicates the CMU to lock an electronic lock, and the electronic lock is in a locking state;
before sending the latching signal to the CMU, the method further comprises:
detecting the state information of the anti-theft function of the discharging gun of the anti-theft subunit of the discharging gun on the entertainment control unit EHU;
if the state information of the anti-theft function of the discharging gun indicates that the anti-theft function is started, a locking signal is sent to the CMU;
when the electronic lock is in the locking state, monitoring an unlocking request signal sent by a PEPS (Passive entry Passive Start) and detecting the current alternating current value of the charging port;
when the unlocking request signal is obtained and the current alternating current value is detected to be smaller than a preset current, an unlocking signal is sent to the CMU, the unlocking signal indicates the CMU to open an electronic lock, and the electronic lock is in an unlocking state;
when the electronic lock is in a locked state, the method further comprises:
detecting current discharge state data;
if the current discharge state meets the preset discharge cutoff condition according to the current discharge state data, detecting the state information of the discharge gun anti-theft function of a discharge gun anti-theft subunit on the entertainment control unit EHU;
and if the state information of the anti-theft function of the discharging gun indicates that the anti-theft function is closed, sending an unlocking signal to the CMU, wherein the unlocking signal indicates the CMU to open the electronic lock.
2. The discharge control method according to claim 1, wherein after acquiring the unlock request signal, the method further comprises:
and sending a control signal to a bidirectional inversion controller BOBC, wherein the control signal is used for indicating the BOBC to stop discharging within a preset time.
3. The discharge control method according to claim 1, characterized in that the method further comprises:
if the state information of the anti-theft function of the discharge gun indicates that the anti-theft function is closed, detecting discharge enabling information triggered when a discharge button is pressed;
and if the discharging enabling information is detected, sending a blocking signal to the CMU.
4. The discharge control method according to claim 1, characterized in that the method further comprises:
and if the state information of the anti-theft function of the discharging gun indicates that the anti-theft function is started, monitoring an unlocking request signal sent by the PEPS, and detecting the current value of the charging port.
5. A discharge control system, comprising:
the charging system comprises a first sending module, a charging port control unit CMU and a control module, wherein the first sending module is used for sending a locking signal to the CMU when a discharging gun is connected with a charging port of a vehicle to be discharged, the locking signal indicates that the CMU locks an electronic lock, and the electronic lock is in a locking state;
the first detection module is used for detecting the state information of the anti-theft function of the discharging gun of the anti-theft sub-unit of the discharging gun on the entertainment control unit EHU;
if the state information of the anti-theft function of the discharging gun indicates that the anti-theft function is started, a locking signal is sent to the CMU;
the monitoring module is used for monitoring an unlocking request signal sent by a PEPS (passive entry system) when the electronic lock is in the locking state and detecting the current alternating current value of the charging port;
the second sending module is used for sending an unlocking signal to the CMU when the unlocking request signal is obtained and the current alternating current value is detected to be smaller than a preset current, wherein the unlocking signal indicates the CMU to open the electronic lock, and the electronic lock is in an unlocking state;
the third detection module is used for detecting the current discharge state data;
if the current discharge state meets the preset discharge cutoff condition according to the current discharge state data, detecting the state information of the discharge gun anti-theft function of a discharge gun anti-theft subunit on the entertainment control unit EHU;
and if the state information of the anti-theft function of the discharging gun indicates that the anti-theft function is closed, sending an unlocking signal to the CMU, wherein the unlocking signal indicates the CMU to open the electronic lock.
6. The discharge control system of claim 5, further comprising:
and the third sending module is used for sending a control signal to a bidirectional inversion controller BOBC, wherein the control signal is used for indicating the BOBC to stop discharging within preset time.
7. The discharge control system of claim 5, further comprising:
the second detection module is used for detecting discharge enabling information triggered when the discharge button is pressed if the state information of the anti-theft function of the discharge gun indicates that the anti-theft function is closed;
and if the discharging enabling information is detected, sending a blocking signal to the CMU.
8. The discharge control system of claim 5, further comprising:
and the third detection module is further used for executing the steps of monitoring an unlocking request signal sent by the PEPS and detecting the current value of the charging port if the state information of the anti-theft function of the discharging gun indicates that the anti-theft function is started.
9. A control apparatus, characterized by comprising: memory, processor and computer program stored on the memory and executable on the processor, the processor implementing the discharge control method according to any one of claims 1 to 4 when executing the computer program.
10. An electric vehicle characterized by comprising the discharge control system according to any one of claims 5 to 8.
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| CN201910355664.2A CN111845442B (en) | 2019-04-29 | 2019-04-29 | Discharging control method, system and equipment and electric automobile |
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| CN112373344A (en) * | 2020-12-07 | 2021-02-19 | 安徽江淮汽车集团股份有限公司 | Intelligent charging method, equipment, storage medium and device |
| CN114379392B (en) * | 2022-03-24 | 2022-06-07 | 长安新能源南京研究院有限公司 | Intelligent lock control method and device for electric vehicle charging gun and storage medium |
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| CN102897114A (en) * | 2011-07-28 | 2013-01-30 | 现代自动车株式会社 | Discharge technique for residual high voltage in hybrid vehicle and method thereof |
| CN102616304A (en) * | 2012-04-23 | 2012-08-01 | 杭州宇扬科技股份有限公司 | Multi-functional anti-theft alarm battery for electric bicycle and electric bicycle |
| CN104104131A (en) * | 2013-04-11 | 2014-10-15 | 铃木株式会社 | Battery charge/discharge control apparatus |
| CN108110870A (en) * | 2016-11-24 | 2018-06-01 | 辽宁东鹰新能源科技股份有限公司 | Electric vehicle packaged type charging station |
| CN108099655A (en) * | 2017-12-15 | 2018-06-01 | 北京长安汽车工程技术研究有限责任公司 | A kind of control method and its system of electric car charging gun lock |
| CN108909492A (en) * | 2018-07-06 | 2018-11-30 | 北京新能源汽车股份有限公司 | Charging and discharging system and vehicle |
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