CN111667617A - Electronic lock unlocking method during alternating current charging of electric vehicle - Google Patents
Electronic lock unlocking method during alternating current charging of electric vehicle Download PDFInfo
- Publication number
- CN111667617A CN111667617A CN202010463951.8A CN202010463951A CN111667617A CN 111667617 A CN111667617 A CN 111667617A CN 202010463951 A CN202010463951 A CN 202010463951A CN 111667617 A CN111667617 A CN 111667617A
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- Prior art keywords
- charging
- electronic lock
- control unit
- vehicle
- intelligent key
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- G—PHYSICS
- G07—CHECKING-DEVICES
- G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
- G07C9/00—Individual registration on entry or exit
- G07C9/00174—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
- G07C9/00182—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated with unidirectional data transmission between data carrier and locks
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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
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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
- Y02T90/14—Plug-in electric vehicles
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses an electronic lock unlocking method during alternating current charging of an electric vehicle, wherein a PEPS ECU detects the relative position between an intelligent key and each low-frequency antenna; identifying the identity of the intelligent key through a low-frequency antenna; the low-frequency antenna transmits the measured key coordinates to the PEPS ECU; the PEPS ECU sends a corresponding electronic lock unlocking operation instruction to the BMS through the CAN bus; after receiving an unlocking operation instruction of the PEPS ECU, the BMS sends a charging current to the OBC through the CAN bus to be reduced below a safety set value; and the OBC receives the instruction, reduces the output current to be below the safety set value according to the request of the BMS, and then unlocks the electronic lock. By adopting the technical scheme, the electronic lock can realize intelligent unlocking in the alternating current charging process; the electronic lock has reasonable structure and stable and reliable operation, and effectively solves the problem that the electronic lock is difficult to plug or is unsafe and convenient to plug.
Description
Technical Field
The invention belongs to the technical field of electronic lock unlocking of electric automobiles. More particularly, the invention relates to an intelligent unlocking method for an electronic lock on an alternating-current charging seat during alternating-current charging of a new energy electric vehicle.
Background
The new energy electric automobile has three modes of alternating current, direct current, wireless charging and the like, wherein the national standard enforces that an electronic lock needs to be installed when the alternating current charging current is larger than 16A. However, not all customers know the structure and national standard requirements of the electric vehicle, so that in the prior art, after the electronic lock is added, the customer may temporarily deal with the emergency vehicle in the charging process, and as the electronic lock is locked and cannot be unlocked without receiving a charging stop instruction, the customer is forced to operate to cause the charging equipment to malfunction, even cause a safety problem; or the charging gun can be plugged and pulled out at will, so that the situation that the charging gun which is being charged is pulled out by other people cannot be checked in the charging process, and the vehicle of a driver cannot continue to be charged and the like can be avoided.
However, the technical literature published in the field does not describe the related technical solutions to solve the above-mentioned defects of the prior art, and there is no report on the public applications of such technical solutions.
Only patent technical documents related to the above problems are searched: a life tester of an electric lock of an electric vehicle alternating-current charging seat and a test control method (CN201811380047.X) thereof, the technical proposal is as follows: the tester comprises a shell, a display screen, two direct current power supplies, four solid relays, a programmable controller, a terminal block, four relays, a leakage switch, a cooling fan and the display screen, wherein the solid relays are used for forward and reverse reversing, so that the service life of the tester is prolonged; an industrial PLC control mode is introduced, so that the stability of the operation reliability is improved; the touch screen is used, so that an operator can conveniently set and change parameters and visually check detection results. The invention adopts the solid-state relay to control the forward and reverse repeated actions of the electronic lock, realizes automatic test through a PLC program, can simultaneously test 5 electronic locks at one time, can independently set whether each path is opened or not, and directly displays the detection result on the touch screen in real time.
Obviously, the technical solution of the patent document does not solve the problems and drawbacks of the prior art.
Disclosure of Invention
The invention provides an electronic lock unlocking method during alternating current charging of an electric vehicle, and aims to solve the problem that an electronic lock is not easy to unlock or unsafe and convenient to insert and pull in a charging process.
In order to achieve the purpose, the invention adopts the technical scheme that:
the electronic lock unlocking method during alternating current charging of the electric vehicle is characterized in that the electric vehicle is provided with a Vehicle Control Unit (VCU), a Battery Management System (BMS), a vehicle-mounted charger (OBC), a keyless system electronic control unit (PEPS ECU) and an intelligent key; the electronic lock is a charging electronic lock;
when intelligent unlocking is needed in a charging state, the keyless system electronic control unit (PEPS ECU) detects the relative position between the intelligent key and each low-frequency antenna; when the intelligent key is in a certain range, a keyless system electronic control unit (PEPSECU) identifies the identity of the intelligent key through a low-frequency antenna; the low-frequency antenna transmits the measured key coordinates to a keyless system electronic control unit (PEPS ECU);
if the intelligent key is legal, a keyless system electronic control unit (PEPS ECU) sends a corresponding electronic lock unlocking operation instruction to a Vehicle Control Unit (VCU) and a Battery Management System (BMS) through a CAN bus; after receiving an unlocking operation instruction of a keyless system electronic control unit (PEPS ECU), a Battery Management System (BMS) sends an instruction for reducing charging current to be below a safety set value to a vehicle-mounted charger (OBC) through a CAN bus;
and the vehicle-mounted charger (OBC) receives the instruction, reduces the output current to be below a safety set value according to the instruction of a Battery Management System (BMS), and unlocks the electronic lock.
If the charging is required to be stopped, a charging stopping button on the alternating current charging gun is manually pressed to stop charging, and the charging gun can be pulled out.
The charging current is reduced to a safe set value of 16A.
And if the identity of the intelligent key is identified by the keyless system electronic control unit (PEPS ECU) through the low-frequency antenna and the intelligent key is judged to be illegal, the keyless system electronic control unit (PEPS ECU) enters a mould repairing mode, a subsequent operation request sent by the intelligent key is rejected, and the fact that other people cannot insert and pull the intelligent key randomly is ensured.
The low-frequency antenna of the keyless system electronic control unit (PEPS ECU) is arranged in the electronic door handle and sends a 125Hz low-frequency signal; its effective range is in a space with a radius of 1.5m or more, centered on itself.
The intelligent key establishes high-frequency and low-frequency bidirectional communication with a keyless system electronic control unit (PEPS ECU) during working, and the PEPS ECU is connected with a Vehicle Control Unit (VCU), a Battery Management System (BMS) and a vehicle-mounted charger (OBC) through a CAN.
When alternating current charging is carried out, the CC and the CP wake up the vehicle-mounted charger (OBC), the vehicle-mounted charger (OBC) uses an internal auxiliary power supply to carry out hard line wake-up on a Vehicle Control Unit (VCU), a Battery Management System (BMS) and a keyless system electronic control unit (PEPS ECU), the Vehicle Control Unit (VCU), the Battery Management System (BMS) and the keyless system electronic control unit (PEPS ECU) are free of any abnormity in self-detection, charging can be carried out according to charging procedures and logic requests, and the electronic lock is locked.
By adopting the technical scheme, the electronic lock can realize intelligent unlocking in the alternating current charging process; the electronic lock has reasonable structure and stable and reliable operation, and effectively solves the problem that the electronic lock is not easy to plug or unsafe to plug randomly when the electric automobile is charged by alternating current.
Drawings
Fig. 1 is a flowchart of the ac charging intelligent unlocking according to the present invention.
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.
Wherein the meaning of each abbreviation is:
VCU-vehicle control Unit;
BMS — battery management system;
OBC-vehicle charger;
PEPS ECU-keyless System electronic control Unit;
DC/DC-direct current voltage regulation;
ECU-electronic control Unit;
CC-charging control;
CP — connection detection.
The process of the intelligent unlocking for ac charging of the present invention as shown in fig. 1 is an electronic lock unlocking method during ac charging of an electric vehicle, wherein the electric vehicle is provided with a VCU (vehicle control unit), a DC/DC (direct current voltage regulator), a battery pack, a BMS (battery management system), an OBC (on-board charger), an ac charging stand, a PEPS ECU (keyless system electronic control unit), and an intelligent key; the electronic lock is a charging electronic lock. The invention aims to solve the technical problems that an electronic lock is not easy to unlock and is unsafe and convenient to insert and pull in an alternating current charging process.
In order to overcome the defects in the prior art and achieve the purpose of solving the problem that an electronic lock is not easy to unlock or is unsafe to plug and unplug randomly, the technical scheme adopted by the invention is as follows:
as shown in fig. 1, in the electronic lock unlocking method during ac charging of the electric vehicle, when intelligent unlocking is required in a charging state, the PEPS ECU detects the relative position between the intelligent key and each low-frequency antenna; when the intelligent key is in a certain range, the PEPS ECU identifies the identity of the intelligent key through a low-frequency antenna; the low-frequency antenna transmits the measured key coordinates to the PEPS ECU;
when the driver carries the intelligent key, the driver walks into the range identified by the low-frequency antenna, and the PEPS ECU is activated.
The certain range is the effective range of the low frequency signal of the low frequency antenna described below.
If the intelligent key is legal, the PEPS ECU sends a corresponding electronic lock unlocking operation instruction to the VCU and the BMS through the CAN bus; after receiving an unlocking operation instruction of the PEPS ECU, the BMS sends an instruction for reducing the charging current to be below a safety set value to the OBC through the CAN bus;
the OBC receives the instruction, reduces the output current to be below a safety set value according to the instruction of the BMS, and unlocks an electronic lock in the alternating-current charging seat;
the BMS feeds back the unlocking information to the ECU so that the ECU enters an unlocking state.
If the charging is required to be stopped, a charging stopping button (S3 in the standard requirement) on the alternating current charging gun is manually pressed to stop the charging, so that the charging gun can be pulled out. At the moment, the driver presses the button in the slow charging upper handle, the OBC detects CC abnormality, and charging is stopped.
The charging current is reduced to a safe set value of 16A.
And if the PEPS ECU identifies the identity of the intelligent key through the low-frequency antenna and judges that the intelligent key is illegal, the PEPS ECU enters a mould repairing mode, rejects the subsequent operation request sent by the intelligent key and ensures that other people cannot insert and pull the intelligent key randomly.
The legality is that the intelligent key is the key of the vehicle; the illegal condition is that the smart key is not the key of the vehicle.
The low-frequency antenna of the PEPS ECU is arranged in the electronic door handle and sends a 125Hz low-frequency signal; its effective range is in a space with a radius of 1.5m or more, centered on itself.
In the whole unlocking process of alternating current charging, a driver does not need to carry out any operation on a key or a slow charging gun and the like, and can unlock the electronic lock on the alternating current seat only by carrying about, and the willingness of the driver to insert and pull at any time can be met, so that the user experience is improved.
The invention has reasonable structure and stable and reliable operation, and can effectively solve the problem that the electronic lock is not easy to plug or unsafe to plug randomly when the electric automobile is charged by alternating current.
The intelligent key establishes high-frequency and low-frequency bidirectional communication with the PEPS ECU during working, and the PEPS ECU is connected with the VCU, the BMS and the OBC through the CAN.
When alternating current charging is carried out, the CC and the CP awaken the OBC, the OBC uses an internal auxiliary power supply to carry out hard line awakening on the VCU, the BMS and the PEPS ECU, the VCU, the BMS and the PEPS ECU are free of any abnormality in self-detection, charging can be carried out according to charging procedures and logic requests, and the electronic lock is locked.
When the electric automobile exchanges normal charging, the OBC converts alternating current in a national power grid into direct current required by the battery pack according to BMS request, and outputs voltage and current in real time to provide energy for the battery pack.
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. An electronic lock unlocking method during alternating current charging of an electric vehicle is provided, wherein the electric vehicle is provided with a vehicle control unit, a battery management system, a vehicle-mounted charger, a keyless system electric control unit and an intelligent key; the electronic lock is a charging electronic lock;
the method is characterized in that:
when intelligent unlocking is needed in a charging state, the keyless system electric control unit detects the relative position between the intelligent key and each low-frequency antenna; when the intelligent key is in a certain range, the keyless system electric control unit identifies the identity of the intelligent key through the low-frequency antenna; the low-frequency antenna transmits the measured key coordinates to the keyless system electric control unit;
if the intelligent key is legal, the keyless system electric control unit sends a corresponding electronic lock unlocking operation instruction to the vehicle control unit and the battery management system through the CAN bus; after receiving an unlocking operation instruction of the keyless system electric control unit, the battery management system sends an instruction for reducing the charging current to be below a safety set value to the vehicle-mounted charger through the CAN bus;
and the vehicle-mounted charger receives the instruction, reduces the output current to be below the safety set value according to the instruction of the battery management system, and unlocks the electronic lock.
2. The electronic lock unlocking method in ac charging of an electric vehicle according to claim 1, characterized in that: if the charging is required to be stopped, a charging stopping button on the alternating current charging gun is manually pressed to stop charging, and the charging gun can be pulled out.
3. The electronic lock unlocking method in ac charging of an electric vehicle according to claim 1, characterized in that: the charging current is reduced to a safe set value of 16A.
4. The electronic lock unlocking method in ac charging of an electric vehicle according to claim 1, characterized in that: if the keyless system electric control unit identifies the identity of the intelligent key through the low-frequency antenna and judges that the intelligent key is illegal, the keyless system electric control unit enters a die repairing mode, rejects a subsequent operation request sent by the intelligent key and ensures that other people cannot insert and pull the intelligent key randomly.
5. The electronic lock unlocking method in ac charging of an electric vehicle according to claim 1, characterized in that: the low-frequency antenna of the keyless system electric control unit is arranged in the electronic door handle and sends a 125Hz low-frequency signal; its effective range is in a space with a radius of 1.5m or more, centered on itself.
6. The electronic lock unlocking method in ac charging of an electric vehicle according to claim 1, characterized in that: the intelligent key establishes high-frequency and low-frequency bidirectional communication with the keyless system electric control unit during working, and the keyless system electric control unit is connected with the vehicle control unit, the battery management system and the vehicle-mounted charger through the CAN.
7. The electronic lock unlocking method in ac charging of an electric vehicle according to claim 1, characterized in that: when the vehicle-mounted charger is charged in an alternating current mode, the CC and the CP wake up the vehicle-mounted charger, the vehicle-mounted charger wakes up the vehicle controller, the battery management system and the keyless system electric control unit through an internal auxiliary power supply in a hard line mode, the vehicle controller, the battery management system and the keyless system electric control unit are free of any abnormity in self-detection, charging can be carried out according to charging procedures and logic requests, and the electronic lock is locked.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010463951.8A CN111667617A (en) | 2020-05-27 | 2020-05-27 | Electronic lock unlocking method during alternating current charging of electric vehicle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010463951.8A CN111667617A (en) | 2020-05-27 | 2020-05-27 | Electronic lock unlocking method during alternating current charging of electric vehicle |
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| CN111667617A true CN111667617A (en) | 2020-09-15 |
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| CN202010463951.8A Pending CN111667617A (en) | 2020-05-27 | 2020-05-27 | Electronic lock unlocking method during alternating current charging of electric vehicle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113147486A (en) * | 2021-05-07 | 2021-07-23 | 东风汽车集团股份有限公司 | Charging system, charging pile system, charging plug plugging protection system and method |
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Application publication date: 20200915 |