CN112046330A - Multilayer safety protection device and method for electric vehicle charging - Google Patents
Multilayer safety protection device and method for electric vehicle charging Download PDFInfo
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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
- B60L53/60—Monitoring or controlling charging stations
- B60L53/68—Off-site monitoring or control, e.g. remote control
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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
- B60L53/60—Monitoring or controlling charging stations
-
- 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
- B60L53/66—Data transfer between charging stations and vehicles
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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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/023—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems
- B60R16/0231—Circuits relating to the driving or the functioning of the vehicle
- B60R16/0232—Circuits relating to the driving or the functioning of the vehicle for measuring vehicle parameters and indicating critical, abnormal or dangerous conditions
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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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- 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
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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
- 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
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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
- 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
- Y02T90/16—Information or communication technologies improving the operation of 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
- 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
- Y02T90/16—Information or communication technologies improving the operation of electric vehicles
- Y02T90/167—Systems integrating technologies related to power network operation and communication or information technologies for supporting the interoperability of electric or hybrid vehicles, i.e. smartgrids as interface for battery charging of electric vehicles [EV] or hybrid vehicles [HEV]
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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
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S30/00—Systems supporting specific end-user applications in the sector of transportation
- Y04S30/10—Systems supporting the interoperability of electric or hybrid vehicles
- Y04S30/12—Remote or cooperative charging
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- Engineering & Computer Science (AREA)
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- Transportation (AREA)
- Automation & Control Theory (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The electric automobile charging multilayer safety protection device comprises a vehicle control unit, a storage battery, a battery management system, a charger, a remote monitoring module and a remote cloud platform, wherein the storage battery is connected with the battery management system, the charger and a power battery form a closed loop, the battery management system is in communication connection with the charger, the vehicle control unit is in communication connection with the battery management system, the remote monitoring module is in communication connection with the vehicle control unit, and the remote cloud platform is in communication connection with the remote monitoring module. The vehicle control unit monitors the vehicle state and the charging state issued by the remote cloud platform in real time, and if the vehicle is abnormal or receives a charging abnormality notification issued by the remote cloud platform and forwarded by the vehicle-mounted remote monitoring module, the vehicle control unit notifies the battery management system to make a charging adjustment response. The invention not only monitors the current charging state of the battery system, but also analyzes the health and safety state of the battery in multiple dimensions, monitors the dynamic state of the vehicle and provides multi-directional and multi-angle protection for the charging of the vehicle.
Description
Technical Field
The invention relates to the technical field of new energy automobiles, in particular to a charging multilayer safety protection device and method for an electric automobile.
Background
At present, when an electric automobile is charged, only a battery management system and a charger are usually arranged on a communication link, the battery management system and the charger only interact with a battery system and the charging state of the charging pile, the vehicle state is unknown, a safety blind area exists, when a fault that the vehicle is not abnormal in the battery system occurs, such as abnormal manual brake, the charging process can be caused, the vehicle slides along a charging gun line with the charging gun line, the charging line is pulled off in a charged mode, and accordingly a safety accident occurs, on the other hand, the battery management system controls charging according to the real-time state of the battery system, the inconsistency of historical charging behaviors in a life cycle can not be identified, such as temperature rise inconsistency, single pressure difference inconsistency and the like.
The utility model discloses a utility model patent that grant notice number is CN 207433318U discloses an electric automobile with safety of charging, be in including automobile body, setting charging seat on the automobile body is still including being used for detecting the contact state's between charging seat and the charging plug contact sensor, and based on contact state starts or closes parking controller of parking control, wherein contact sensor with parking controller communication connection. The parking control is started by detecting the contact state between the charging seat and the charging plug, so that the safety accident of starting the vehicle is avoided, the current, the voltage and/or the temperature of the battery are further detected, and the power is rapidly cut off when the battery is over-temperature, over-voltage and/or over-current, so that the charging safety of the electric automobile is improved.
However, although the interlocking of parking and charging can be realized in the patent, the requirement of GB 18384 and 2020 on charging safety is met, and meanwhile, the abnormality such as battery over-temperature, overvoltage or overcurrent occurring in the charging process can only be controlled by the battery management system itself, and the problem of vehicle slipping and being dragged with electricity under the abnormality of parking, that is, the abnormality of the hand brake signal, cannot be avoided, and the inconsistency of the historical charging behavior in the life cycle cannot be recognized, and the vehicle cannot be stopped from being charged in time due to other abnormalities occurring. Therefore, the charging multilayer safety protection device and method for the electric automobile are provided.
Disclosure of Invention
The invention provides a multilayer safety protection device and a multilayer safety protection method for charging of an electric vehicle, which are used for overcoming the defects that the conventional electric vehicle can only be controlled by a battery management system during charging, the safety accidents caused by charging when the vehicle has a non-battery system abnormal fault cannot be avoided, the charging cannot be stopped in time when the inconsistency of historical charging behaviors in a life cycle cannot be identified, and the like.
The invention adopts the following technical scheme:
a multilayer safety protection device for charging of an electric automobile comprises a vehicle control unit, a storage battery, a battery management system, a charger, a remote monitoring module and a remote cloud platform, wherein the storage battery is connected with the battery management system, a switch K1 is arranged between the storage battery and the battery management system, the switch K1 is connected with the vehicle control unit in a control way, the charger and the power battery form a charging closed loop, the charging closed loop is at least provided with a switch K2, the charger is in signal connection with the vehicle control unit, the battery management system is in communication connection with the charger, the battery management system is also in control connection with the switch K2, the vehicle control unit is in communication connection with the battery management system, the remote monitoring module is in communication connection with the vehicle control unit, and the remote cloud platform is in communication connection with the remote monitoring module.
Preferably, when the charger is an off-board direct current charger, the off-board direct current charger is connected with the vehicle control unit through an auxiliary power signal.
Preferably, when the charger is a vehicle-mounted charger, the non-vehicle-mounted alternating current charger or the control box on the cable is connected with the vehicle-mounted charger through a control guide CP signal, and the vehicle-mounted charger is connected with the vehicle control unit through a wake-up signal.
Further, the vehicle-mounted charger is connected with the storage battery, a switch K4 is arranged between the vehicle-mounted charger and the storage battery, and the switch K4 is in control connection with the vehicle control unit.
Preferably, when the charger is an off-board direct current charger, the protection device further comprises an EVCC and an SECC, the battery management system is in communication connection with the EVCC, the off-board direct charger is connected with the EVCC through a control pilot CP signal, and the EVCC is in communication connection with the SECC through a PLC.
The multilayer safety protection method for electric vehicle charging comprises the following steps:
s10, after the gun insertion is started to charge, the vehicle controller detects and identifies charging start, and the output drive control switch K1 is closed, so that the storage battery provides a low-voltage working power supply for the battery management system;
S2O, detecting a charging related physical connection signal and carrying out fault self-checking after the battery management system is electrified, and establishing communication with a charger to carry out charging information interaction;
s30, the vehicle controller monitors the vehicle state and the charging state issued by the remote cloud platform in real time, and fault severity grade division is carried out according to the hazard degree of various abnormal conditions;
and S40, in the charging process, if the vehicle is abnormal or receives a charging abnormal notification transmitted by a remote cloud platform and forwarded by the vehicle-mounted remote monitoring module, the vehicle controller transmits corresponding information according to the preset fault grade division to notify the battery management system to make a charging adjustment response.
Furthermore, the remote cloud platform continuously updates the charging data returned by the vehicle-mounted remote monitoring module in a communication link mode, performs real-time data multidimensional analysis, analyzes the historical charging behavior of the vehicle and the charging behavior of the same vehicle type under the condition that the environmental temperature, the charging power and the initial charging battery temperature are similar or identical, and compares the temperature rise rate, the monomer pressure difference and the temperature difference condition of the battery in unit time under the condition that a cooling system is not abnormal.
Further, when the remote cloud platform monitors that the temperature rise, the monomer pressure difference and the temperature difference obviously deviate from the average value and the variance of the historical charging behavior of the vehicle or the charging behavior of the same vehicle type, an abnormal notice is issued, a safety protection mechanism is started, and a report is formed periodically or the occurrence of a serious condition is predicted, early warning information is sent to notify a user.
Further, in step S40, the battery management system keeps communicating with the vehicle controller, and when a system fault or a charger fault occurs or a charging abnormality issued by the vehicle controller is received, the battery management system timely and correspondingly reduces current or stops charging, and feeds back a corresponding condition.
Further, in step S40, if the battery management system fails to respond to the control request issued by the vehicle controller or the response is overtime, the vehicle controller starts the active safety protection mechanism, and turns off the switch K1, so as to cut off the low-voltage power supply of the battery management system, actively stop charging, and record the exception handling.
As can be seen from the above description of the present invention, compared with the prior art, the present invention has the following advantages:
1. when the electric automobile is charged, the vehicle control unit and the remote cloud platform are introduced to participate in safety control on the basis of single battery management system control, multilayer safety protection of charging is realized, the current charging state of the battery system is monitored, the health and safety states of the battery are analyzed in multiple dimensions and controlled, the dynamic state of the vehicle is monitored, multi-direction and multi-angle protection is provided for vehicle charging, and the safety and reliability of vehicle charging are improved.
2. According to the remote cloud platform, the historical charging data is subjected to statistical analysis to form a safety protection model, the database is continuously updated, abnormal charging can be predicted, risks can be identified in time, a safety protection mechanism is started, an alarm is given for the predicted abnormal charging and is remotely issued to inform the vehicle control unit, and the battery management system is indirectly controlled to carry out current reduction charging or stop charging.
3. According to the invention, under the condition that a battery management system fails to respond or does not respond to a charging control demand issued by the vehicle control unit, the vehicle control unit starts active safety protection to cut off low-voltage power supply of the battery management system, and simultaneously cuts off low-voltage power supply of a vehicle-mounted charger in an alternating current gun charging mode to directly and forcibly stop charging, so that multilayer safety protection for charging is realized, early warning is carried out in advance and response is made, and safety accidents caused by over-charging of a battery, over-temperature of the battery, electric vehicle sliding of a gun wire, inconsistency of single batteries and the like are avoided.
Drawings
Fig. 1 is a frame diagram of a multi-layer safety protection device charged by a national standard direct current gun according to the present invention.
FIG. 2 is a block diagram of a multi-layer safety shield apparatus charged with an AC gun according to the present invention.
Fig. 3 is a frame diagram of a multi-layer safety protection device charged by using a euro standard dc gun according to the present invention.
FIG. 4 is a flow chart of the present invention.
Fig. 5 is a flowchart of a multilayer safety protection method for charging of the vehicle control unit.
Fig. 6 is a flow chart of a multi-layer safety protection method for charging a battery management system.
Fig. 7 is a remote cloud platform charging security analysis processing machine diagram.
Detailed Description
The following describes embodiments of the present invention with reference to the drawings. Numerous details are set forth below in order to provide a thorough understanding of the present invention, but it will be apparent to those skilled in the art that the present invention may be practiced without these details. Well-known components, methods and processes are not described in detail below.
The electric vehicle charging multilayer safety protection device comprises a vehicle control unit 1, a storage battery 2, a battery management system 3, a charger, a remote monitoring module 5 and a remote cloud platform 6, wherein low-voltage power supply inputs of the vehicle control unit 1, the charger and the remote monitoring module 5 are all connected with the storage battery 2, and a normal-electricity working state is kept. The storage battery 2 is further connected with the battery management system 3, a switch K1 is arranged between the storage battery 2 and the battery management system 3, and the switch K1 is in control connection with the vehicle control unit 1.
The charger and the power battery form a charging closed loop, the charging closed loop is provided with a switch K2 and a switch K3, and the battery management system is in control connection with the switch K2 and the switch K3. The vehicle control unit 1 is in communication connection with the remote monitoring module 5 through a CAN1, the battery management system 3 is in communication connection with the vehicle control unit 1 through a CAN2, the charger is in communication connection with the battery management system 3 through a CAN3, and the remote monitoring module 5 is in communication connection with the remote cloud platform 6 through a 4G or 5G communication link.
Referring to fig. 1, in the national standard dc gun charging mode, the charger is an off-board dc charger 41, and the off-board dc charger 41 is connected to the vehicle control unit 1 through an auxiliary power signal. After the gun insertion starts charging, the vehicle control unit 1 detects an auxiliary power supply signal (level signal) output by the off-board direct-current charger 41 to recognize charging start, and outputs a driving control switch K1 to be closed, so that the storage battery provides a low-voltage working power supply for the battery management system.
Referring to fig. 2, in the ac gun charging mode, the charger is a vehicle-mounted charger 42, the vehicle-mounted charger 42 is connected to the battery, a switch K4 is disposed between the vehicle-mounted charger 42 and the battery 2, and the switch K4 is in control connection with the vehicle control unit 1. The off-board alternating current charger or the control box on the cable is connected with the on-board alternating current charger through a control guide CP signal, and the on-board alternating current charger 42 is connected with the vehicle control unit 1 through a wake-up signal. After the gun insertion starts charging, the off-board alternating current charger or the control box on the cable outputs a control guide CP signal to wake up the on-board charger 42, the on-board charger 42 outputs a charging wake-up signal after waking up, the vehicle control unit 1 detects the signal to recognize charging opening, and the output drives the control switch K1 to be closed, so that the storage battery 2 provides a low-voltage working power supply for the battery management system 3.
Referring to fig. 3, in the euro-standard dc gun charging mode, the charger is an off-board dc charger 43, the protection device further includes an EVCC7 and an SECC8, the battery management system 3 is in communication connection with the EVCC7, the off-board dc charger 43 is connected with the EVCC7 by a control pilot CP signal, and the EVCC7 is in communication connection with the SECC8 by a PLC. After the gun insertion starts charging, the EVCC7 is awakened by a control guide CP signal output by the off-board direct current charger 43, the PLC communication is established with the SECC8, then a charging awakening signal is output, the vehicle control unit 1 detects the signal to recognize charging opening, and the output drives the control switch K1 to be closed, so that the storage battery 2 provides a low-voltage working power supply for the battery management system 3.
Referring to fig. 4, the invention further provides a multilayer safety protection method for electric vehicle charging, which includes the above multilayer safety protection device for electric vehicle charging, and includes the following steps:
and S10, after the gun insertion is started to charge, the vehicle controller detects and identifies charging start, and the output drive control switch K1 is closed, so that the storage battery provides a low-voltage working power supply for the battery management system.
Under different rifle fills the mode, the mode that vehicle control unit detected the discernment and charged and opened is different, specifically as follows: 1. in the national standard direct current gun charging mode, after the gun insertion starts charging, the vehicle control unit detects an auxiliary power supply signal (level signal) output by the off-board direct current charger to identify charging start. 2. In the alternating current gun charging mode, after the gun insertion starts charging, the off-board alternating current charger or the control box on the cable outputs a control guide CP signal to wake up the on-board alternating current charger, the on-board alternating current charger wakes up and then outputs a charging wake-up signal, and the vehicle controller detects the signal to recognize charging start. 3. In the European standard direct current gun charging mode, after the gun is inserted to start charging, the EVCC is awakened by a control guide CP (control content) signal output by the off-board direct current charger, PLC (programmable logic controller) communication is established with the SECC, then a charging awakening signal is output, and the vehicle control unit detects the signal to recognize charging start.
And S2O, detecting charging related physical connection signals (national standard direct current gun charging CC2, alternating current gun charging CC and European standard direct current gun charging PP) after the battery management system is electrified, carrying out fault self-detection, and establishing communication with a charger to carry out charging information interaction. The charging information interaction is carried out by the European standard direct current gun charging device and the non-vehicle-mounted direct current charging device indirectly through PLC communication.
S30, the vehicle controller monitors the vehicle state and the charging state issued by the remote cloud platform in real time, and fault severity grade division is carried out according to the hazard degree of various abnormal conditions.
The method can be divided into three levels, wherein a level 1 fault only prompts, a level 2 fault prompts and requires to limit the charging power, and a level 3 fault prompts and requires to stop charging immediately.
And S40, in the charging process, if the vehicle is abnormal or receives a charging abnormal notification transmitted by a remote cloud platform and forwarded by the vehicle-mounted remote monitoring module, the vehicle controller transmits corresponding information according to the preset fault grade division to notify the battery management system to make a charging adjustment response.
The charging multi-layer safety protection method with participation of different control modules is as follows.
The charging multilayer safety protection method with participation of the vehicle control unit specifically includes, with reference to fig. 5:
1. inserting a gun and starting charging;
2. when an auxiliary power supply signal or a charging wake-up signal is detected, the switch K1 is closed;
3. the battery management system is powered on, charging CAN communication is established, and charging is carried out in a charging process according to the requirements of relevant standards;
4. if the vehicle controller monitors that the vehicle is abnormal, such as the hand brake is abnormal, the discharging contactor is abnormal and the like; or the remote platform issues charging abnormity notification, such as temperature rise inconsistency;
5. according to the severity of the fault, informing a battery management system to reduce the current for charging or stop charging through CAN communication;
6. if the battery management system does not respond to the situation after time out, the vehicle controller actively cuts off a switch K1 (in an alternating current charging mode, a switch K4 is synchronously cut off, low-voltage power supply of a vehicle-mounted charger is cut off), the battery management system is forcibly cut off, charging is actively stopped, and recording is carried out.
Secondly, a multi-layer safety protection method for charging of a battery management system, referring to fig. 6, specifically includes:
1. inserting a gun and starting charging;
2. detecting charging related physical connection signals (national standard direct current gun charging CC2, alternating current gun charging CC, European standard direct current gun charging PP);
3. self-checking, establishing charging CAN communication, and entering a charging process for charging according to the requirements of relevant standards;
4. if the battery system or the charger fails, or the vehicle controller issues an abnormal early warning to require current reduction or stop charging;
5. the battery management system carries out current reduction charging or charging stopping on the charger, and the battery management system feeds back corresponding conditions to the whole vehicle controller in a CAN communication mode.
Thirdly, a remote cloud platform charging security analysis processing mechanism, as shown in fig. 7:
1. inserting a gun and starting charging;
2. receiving charging data transmitted back by a remote monitoring module in a 4G/5G mode and the like, and analyzing big data in real time;
3. multidimensional analysis (self-comparison and equivalence, i.e., vehicle history comparison and vehicle type analogy): under the condition that the ambient temperature, the charging power and the initial battery temperature at the beginning of charging are similar or identical, analyzing the historical charging behavior of the vehicle and the charging behavior of the same vehicle type, and comparing the temperature rise rate, the monomer pressure difference and the temperature difference condition of the battery in unit time under the condition that a cooling system is not abnormal;
4. if the temperature rise, the monomer pressure difference and the temperature difference obviously deviate from the average value, the variance and the like of the historical charging behavior of the vehicle or the charging behavior of the same vehicle type;
5. and issuing a notice, receiving the notice by a remote monitoring module, informing a vehicle controller of an immediate pneumatic safety protection response mechanism through CAN communication, and sending early warning information to inform a user through short messages or telephones and the like under the condition of regularly forming reports or serious faults.
The above description is only an embodiment of the present invention, but the design concept of the present invention is not limited thereto, and any insubstantial modifications made by using the design concept should fall within the scope of infringing the present invention.
Claims (10)
1. The utility model provides an electric automobile multilayer safety device that charges which characterized in that: the intelligent charging system comprises a vehicle control unit, a storage battery, a battery management system, a charger, a remote monitoring module and a remote cloud platform, wherein the storage battery is connected with the battery management system, a switch K1 is arranged between the storage battery and the battery management system, the switch K1 is connected with the vehicle control unit in a control mode, the charger and a power battery form a charging closed loop, at least one switch K2 is arranged on the charging closed loop, the charger is connected with the vehicle control unit in a signal mode, the battery management system is connected with the charger in a communication mode, the battery management system is further connected with the switch K2 in a control mode, the vehicle control unit is connected with the battery management system in a communication mode, the remote monitoring module is connected with the vehicle control unit in a communication mode, and the remote cloud platform is connected with the remote monitoring module in a communication mode.
2. The multi-layer safety protection device for electric vehicle charging according to claim 1, wherein: the charger is an off-board direct current charger which is connected with the vehicle control unit through an auxiliary power supply signal.
3. The multi-layer safety protection device for electric vehicle charging according to claim 1, wherein: the charger is a vehicle-mounted charger, the non-vehicle-mounted alternating current charger or a control box on the cable is connected with the vehicle-mounted charger through a control guide CP signal, and the vehicle-mounted charger is connected with the vehicle control unit through a wake-up signal.
4. The multi-layer safety protection device for electric vehicle charging according to claim 3, wherein: the vehicle-mounted charger is connected with the storage battery, a switch K4 is arranged between the vehicle-mounted charger and the storage battery, and the switch K4 is in control connection with the vehicle control unit.
5. The multi-layer safety protection device for electric vehicle charging according to claim 1, wherein: the protection device further comprises an EVCC and an SECC, the battery management system is in communication connection with the EVCC, the off-board direct charger is connected with the EVCC through a control guide CP signal, and the EVCC is in communication connection with the SECC through a PLC.
6. The multilayer safety protection method for electric vehicle charging comprises the multilayer safety protection device for electric vehicle charging according to claim 1, and comprises the following specific steps:
s10, after the gun insertion is started to charge, the vehicle controller detects and identifies charging start, and the output drive control switch K1 is closed, so that the storage battery provides a low-voltage working power supply for the battery management system;
S2O, detecting a charging related physical connection signal and carrying out fault self-checking after the battery management system is electrified, and establishing communication with a charger to carry out charging information interaction;
s30, the vehicle controller monitors the vehicle state and the charging state issued by the remote cloud platform in real time, and fault severity grade division is carried out according to the hazard degree of various abnormal conditions;
and S40, in the charging process, if the vehicle is abnormal or receives a charging abnormal notification transmitted by a remote cloud platform and forwarded by the vehicle-mounted remote monitoring module, the vehicle controller transmits corresponding information according to the preset fault grade division to notify the battery management system to make a charging adjustment response.
7. The multilayer safety protection method for electric vehicle charging according to claim 6, characterized in that: the remote cloud platform continuously updates charging data returned by the vehicle-mounted remote monitoring module in a communication link mode, performs real-time data multidimensional analysis, analyzes the historical charging behavior of the vehicle and the charging behavior of the same vehicle type under the condition that the ambient temperature, the charging power and the initial charging battery temperature are similar or the same, and compares the temperature rise rate, the monomer pressure difference and the temperature difference condition of the battery in unit time under the condition that a cooling system is not abnormal.
8. The multi-layer safety protection method for electric vehicle charging according to claim 7, characterized in that: when the remote cloud platform monitors that the temperature rise, the monomer pressure difference and the temperature difference obviously deviate from the average value and the variance of the historical charging behavior of the vehicle or the charging behavior of the same vehicle type, an abnormal notice is issued, a safety protection mechanism is started, and a report is formed periodically or the occurrence of a serious condition is predicted, early warning information is sent to notify a user.
9. The multilayer safety protection method for electric vehicle charging according to claim 6, characterized in that: in step S40, the battery management system keeps communicating with the vehicle controller, and when a system fault or a charger fault occurs or a charging abnormality issued by the vehicle controller is received, the battery management system timely and correspondingly reduces current or stops charging, and feeds back a corresponding condition.
10. The multilayer safety protection method for electric vehicle charging according to claim 6, characterized in that: in the step S40, a charging abnormality occurs, and if the battery management system does not respond to the control request issued by the vehicle controller or the response is overtime, the vehicle controller starts an active safety protection mechanism and turns off the switch K1, so as to cut off the low-voltage power supply of the battery management system, actively stop charging, and record the abnormality processing.
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103358930A (en) * | 2013-08-09 | 2013-10-23 | 山东省科学院自动化研究所 | Vehicle-mounted charging control system of electric vehicle and control method thereof |
| CN203372083U (en) * | 2013-08-09 | 2014-01-01 | 山东省科学院自动化研究所 | Vehicle-mounted charging control device of electric vehicle |
| CN205017074U (en) * | 2015-10-20 | 2016-02-03 | 西安特锐德智能充电科技有限公司 | Machine that charges that possesses initiative safeguard function |
| CN109606118A (en) * | 2019-01-11 | 2019-04-12 | 厦门金龙联合汽车工业有限公司 | A kind of electric automobile power battery safety monitoring system and its low-voltage distribution scheme |
| CN109633310A (en) * | 2018-12-14 | 2019-04-16 | 山东鲁能智能技术有限公司 | Cloud platform is detected towards interconnecting for electric car electrically-charging equipment |
| CN110027427A (en) * | 2018-11-08 | 2019-07-19 | 兰州海红技术股份有限公司 | A kind of shared monitoring management system of electric automobile charging pile timesharing |
| CN110481380A (en) * | 2019-08-16 | 2019-11-22 | 青岛联合新能源汽车有限公司 | A kind of long-range charge control system of batteries of electric automobile and method |
| CN110641284A (en) * | 2019-11-19 | 2020-01-03 | 厦门金龙联合汽车工业有限公司 | Low-voltage power supply management system for safety monitoring of power battery of electric automobile |
| US20200233956A1 (en) * | 2019-01-23 | 2020-07-23 | General Electric Company | Framework for cyber-physical system protection of electric vehicle charging stations and power grid |
| CN212267264U (en) * | 2020-10-21 | 2021-01-01 | 厦门金龙联合汽车工业有限公司 | Multilayer safety device for electric automobile charging |
-
2020
- 2020-10-21 CN CN202011132665.XA patent/CN112046330B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103358930A (en) * | 2013-08-09 | 2013-10-23 | 山东省科学院自动化研究所 | Vehicle-mounted charging control system of electric vehicle and control method thereof |
| CN203372083U (en) * | 2013-08-09 | 2014-01-01 | 山东省科学院自动化研究所 | Vehicle-mounted charging control device of electric vehicle |
| CN205017074U (en) * | 2015-10-20 | 2016-02-03 | 西安特锐德智能充电科技有限公司 | Machine that charges that possesses initiative safeguard function |
| CN110027427A (en) * | 2018-11-08 | 2019-07-19 | 兰州海红技术股份有限公司 | A kind of shared monitoring management system of electric automobile charging pile timesharing |
| CN109633310A (en) * | 2018-12-14 | 2019-04-16 | 山东鲁能智能技术有限公司 | Cloud platform is detected towards interconnecting for electric car electrically-charging equipment |
| CN109606118A (en) * | 2019-01-11 | 2019-04-12 | 厦门金龙联合汽车工业有限公司 | A kind of electric automobile power battery safety monitoring system and its low-voltage distribution scheme |
| US20200233956A1 (en) * | 2019-01-23 | 2020-07-23 | General Electric Company | Framework for cyber-physical system protection of electric vehicle charging stations and power grid |
| CN110481380A (en) * | 2019-08-16 | 2019-11-22 | 青岛联合新能源汽车有限公司 | A kind of long-range charge control system of batteries of electric automobile and method |
| CN110641284A (en) * | 2019-11-19 | 2020-01-03 | 厦门金龙联合汽车工业有限公司 | Low-voltage power supply management system for safety monitoring of power battery of electric automobile |
| CN212267264U (en) * | 2020-10-21 | 2021-01-01 | 厦门金龙联合汽车工业有限公司 | Multilayer safety device for electric automobile charging |
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