CN112305384A - Charging pile multiple insulation detection control method and system - Google Patents
Charging pile multiple insulation detection control method and system Download PDFInfo
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- 238000001514 detection method Methods 0.000 title claims abstract description 66
- 238000009413 insulation Methods 0.000 title claims abstract description 66
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- 230000006854 communication Effects 0.000 claims description 15
- 238000004891 communication Methods 0.000 claims description 15
- 230000007175 bidirectional communication Effects 0.000 claims description 11
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1227—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
- G01R31/1263—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation
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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
- B60L53/30—Constructional details of charging stations
- B60L53/31—Charging columns specially adapted for electric vehicles
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/385—Arrangements for measuring battery or accumulator variables
- G01R31/387—Determining ampere-hour charge capacity or SoC
- G01R31/388—Determining ampere-hour charge capacity or SoC involving voltage measurements
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/392—Determining battery ageing or deterioration, e.g. state of health
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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
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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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- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
A charging pile multiple insulation detection control method and a system thereof are provided, the method comprises the steps of physically connecting a charging pile and a charging vehicle, and starting charging; acquiring the highest allowable charging voltage of a Battery Management System (BMS); starting a charging module according to the maximum allowable charging voltage of the BMS; judging whether the charging module is normally started: if so, normally carrying out insulation detection and continuing the charging process; if not, further judging whether the insulation detection times reach a preset value: if the preset value is reached, stopping the charging process according to the result of failed starting; and if the preset value is not reached, returning to the step of starting the charging module according to the highest allowable charging voltage of the BMS. The invention solves the problem that the direct current charging pile is influenced by the module fault rate during insulation detection, realizes safe and reliable charging of the electric automobile, and plays a role in promoting the development of the electric automobile industry.
Description
Technical Field
The invention relates to the technical field of electric vehicle charging, in particular to a charging pile multiple insulation detection control method and system.
Background
With the development of new energy, the application of electric vehicles is more and more popular. The construction scale of electric vehicle charging piles in China is limited, and the established charging piles have defects in the aspects of safety, reliability, service efficiency, economy and the like. The future development focuses mainly on improving the safety, reliability, service efficiency and environmental adaptability of the direct-current charging pile and reducing the operation and maintenance cost. At present, a large part of insulation detection functions of the established direct current charging piles in the market depend on a first group of modules of the charging piles. When direct current fills electric pile ubiquitous and charges, owing to adopt first group rectifier module as insulation detection's voltage supply, if first group module start-up fails, just can fill the condition of electric pile insulation detection failure, the fault shutdown. Therefore, the safety and reliability of the direct current charging pile cannot be well guaranteed, and the popularization of the electric automobile industry is slow. In order to improve the safety of the direct current charging pile in the using process and enhance the reliability of the direct current charging pile, the direct current charging pile with a reasonable pre-charging control system is designed to be a necessary trend.
In view of the above situation, the invention provides a charging pile multiple insulation detection control method and system, which can improve the safety and reliability of the use of a direct current charging pile.
Disclosure of Invention
The invention aims to provide a charging pile multiple insulation detection control method and system aiming at the defects of the prior art, and the method and system solve the problem that the direct current charging pile is influenced by the module fault rate during insulation detection, realize safe and reliable charging of an electric automobile and play a role in promoting the development of the electric automobile industry.
The invention is realized by adopting the following technical scheme:
the invention provides a charging pile multiple insulation detection control method in a first aspect, which comprises the following steps:
physically connecting a charging pile and a charging vehicle, and starting charging;
acquiring the highest allowable charging voltage of a Battery Management System (BMS);
starting a charging module according to the maximum allowable charging voltage of the BMS;
judging whether the charging module is normally started: if so, normally carrying out insulation detection and continuing the charging process; if not, further judging whether the insulation detection times reach a preset value: if the preset value is reached, stopping the charging process according to the result of failed starting; and if the preset value is not reached, returning to the step of starting the charging module according to the highest allowable charging voltage of the BMS.
Further, the starting the charging module according to the maximum allowable charging voltage of the BMS may include:
and selecting a smaller value from the highest allowable charging voltage of the charging pile and the highest allowable charging voltage of the BMS as a basis, and selecting a corresponding charging module to start.
Further, the judging whether the charging module is normally started includes judging whether the charging module is successfully started and whether the voltage inside the DC relay meets the requirement.
Further, if the charging module is abnormally started or the voltage inside the DC relay does not meet the requirement, a shutdown command is sent to the charging module, the charging module is switched out of a main loop, the abnormal state of the charging module is recorded, the charging module is not used any more in the current charging, and the insulation detection is stopped;
and further judging whether the insulation detection times reach a preset value.
The invention provides a charging pile multiple insulation detection control system in a second aspect, which comprises a charging controller and a power controller, wherein the charging controller is used for controlling the charging pile to be charged;
the charging controller comprises a BMS communication management unit, an insulation detection unit and a charging control unit;
the power controller comprises a charging module starting control unit and a charging module switching control unit;
the charging pile multiple insulation detection control system is used for executing the charging pile multiple insulation detection control method.
Further, the charge controller is in bidirectional communication with the vehicle BMS; the charge controller is in bidirectional communication with the power controller.
Further, the charge controller is in bidirectional communication with the vehicle BMS, namely CAN communication; the bidirectional communication between the charge controller and the power controller is CAN communication.
Further, the charging module switching control unit controls the charging module to switch in and switch out the main loop.
Further, when the charging control unit requests the modules to be started, the charging module switching control unit controls the charging modules to be switched into one group.
Further, when the charging module start control unit detects that the charging module is abnormally started, the charging module switching control unit switches out the group of charging modules.
In summary, the invention provides a charging pile multiple insulation detection control method and system, the method comprises the steps of physically connecting a charging pile and a charging vehicle, and starting charging; acquiring the highest allowable charging voltage of a Battery Management System (BMS); starting a charging module according to the maximum allowable charging voltage of the BMS; judging whether the charging module is normally started: if so, normally carrying out insulation detection and continuing the charging process; if not, further judging whether the insulation detection times reach a preset value: if the preset value is reached, stopping the charging process according to the result of failed starting; and if the preset value is not reached, returning to the step of starting the charging module according to the highest allowable charging voltage of the BMS. The method and the system are provided for solving the problem that the direct current charging pile is affected by the module fault rate during insulation detection, realize safe and reliable charging of the electric automobile and play a role in promoting the development of the electric automobile industry.
Drawings
Fig. 1 is a schematic flow chart of a charging pile multiple insulation detection control method according to an embodiment of the invention;
fig. 2 is a block diagram of a charging pile multiple insulation detection 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 further detail with reference to the accompanying drawings in conjunction with the following detailed description. It should be understood that the description is intended to be exemplary only, and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
The invention provides a charging pile multiple insulation detection control method in a first aspect, as shown in fig. 1, comprising the following steps:
step S100, physically connecting a charging pile and a charging vehicle, and starting charging;
step S200, the maximum allowable charging voltage of the battery management system BMS is acquired. When the physical connection between the vehicle and the charging pile is completed, the charging pile is electrified in a low-voltage assisting mode, the interaction between a Charger Handshake Message (CHM) and a vehicle identification message (BHM) of the BMS is started, and the BMS communication management unit acquires the highest allowable charging voltage of the BMS from the vehicle identification message (BHM).
And step S300, starting a charging module according to the highest allowable charging voltage of the BMS. Specifically, a smaller value is selected from the highest allowable charging voltage of the charging pile and the highest allowable charging voltage of the BMS to serve as a basis for insulation detection starting voltage, a corresponding charging module is selected to be started, and a charging quick start command is sent to the power controller through CAN communication.
Step S400, judging whether the charging module is normally started: if so, normally carrying out insulation detection and continuing the charging process; if not, further judging whether the insulation detection times reach a preset value: if the preset value is reached, stopping the charging process according to the result of failed starting; and if the preset value is not reached, returning to the step of starting the charging module according to the highest allowable charging voltage of the BMS.
Specifically, after the power controller receives the command, the charging module starting control unit controls a group of available charger modules to be quickly started, the charging module switching control unit puts the group of modules into a main loop and sends the group of charging module starting states to the charging controller through CAN communication, and the charging control unit detects the voltage on the inner side of the DC relay and the charging module starting states in real time. And if the charging module is started successfully and the voltage inside the DC relay meets the requirement, the insulation detection unit starts to work and starts to perform insulation detection. And if the charging module is abnormally started or the voltage deviation of the inner side of the DC relay is overlarge, the charging control unit sends a charging module stop command to the power controller through CAN communication. After the power controller receives the command, the charging module starting controller unit controls the group of charging modules to stop, the charging module switching control unit cuts out the group of modules into a main loop, the charging module starting controller unit records the abnormal state of the modules, the group of modules are not used in the current charging, and the insulation detection is stopped.
The charging control unit checks whether the number of times of performing insulation detection reaches a preset maximum number of times, and if not, starts next insulation detection, and starts to perform again from step S300. If the charging is finished, the charging control unit controls the charging pile to stop so as to finish the charging at this time according to a result of failed starting.
The second aspect of the present invention provides a charging pile multiple insulation detection control system, a system block diagram of which is shown in fig. 2, and includes a charging controller and a power controller; the charging controller comprises a BMS communication management unit, an insulation detection unit and a charging control unit; a charging control unit, an insulation detection unit and a charging module switching control unit in a system block diagram are main functional modules of the software control system. The power controller comprises a charging module starting control unit and a charging module switching control unit; the charging pile multiple insulation detection control system is used for executing the charging pile multiple insulation detection control method.
Further, the charge controller is in bidirectional communication with the vehicle BMS; the charge controller is in bidirectional communication with the power controller.
Further, the charge controller is in bidirectional communication with the vehicle BMS, namely CAN communication; the bidirectional communication between the charge controller and the power controller is CAN communication.
Further, the charging module switching control unit controls the charging module to switch in and switch out the main loop.
Further, when the charging control unit requests the modules to be started, the charging module switching control unit controls the charging modules to be switched into one group.
Further, when the charging module start control unit detects that the charging module is abnormally started, the charging module switching control unit switches out the group of charging modules.
Further, the charging control unit has a DC relay inside voltage detection function.
Further, the multiple insulation detection control system has a BMS communication management function.
Further, the charge controller issues a quick start instruction to the power controller according to the vehicle BMS information.
Further, after receiving the fast start command, the power controller implements a fast start process of the charging module according to a fast start control strategy of the charging module.
The charging control unit realizes the control function of the whole charging process, realizes CC control guidance, electronic lock control, auxiliary power supply control and DC relay control, and realizes the voltage and current output control and the state detection of the charger.
The insulation detection unit realizes the insulation detection function through the calculation of DC +/DC-ground resistance.
The BMS communication management unit realizes the management function of information interaction between the vehicle BMS and the charging pile, and controls and manages six stages in the charging process, wherein the six stages are a physical connection completion stage, a low-voltage auxiliary electrification stage, a charging handshake stage, a charging parameter configuration stage, a charging stage and a charging finishing stage.
The charging module starting control unit realizes a control function on the starting process of the charging module.
And the switching control unit of the charging module realizes the control function on the switching-in and switching-out of the module.
And each functional unit of the direct current charging pile control system is packaged into each independent software functional module in software implementation.
In summary, the invention provides a charging pile multiple insulation detection control method and system, the method comprises the steps of physically connecting a charging pile and a charging vehicle, and starting charging; acquiring the highest allowable charging voltage of a Battery Management System (BMS); starting a charging module according to the maximum allowable charging voltage of the BMS; judging whether the charging module is normally started: if so, normally carrying out insulation detection and continuing the charging process; if not, further judging whether the insulation detection times reach a preset value: if the preset value is reached, stopping the charging process according to the result of failed starting; and if the preset value is not reached, returning to the step of starting the charging module according to the highest allowable charging voltage of the BMS. The method and the system are provided for solving the problem that the direct current charging pile is affected by the module fault rate during insulation detection, realize safe and reliable charging of the electric automobile and play a role in promoting the development of the electric automobile industry.
The present invention has been given above in relation to specific embodiments, but the invention is not limited to the described embodiments. In the thought given by the present invention, the technical means in the above embodiments are changed, replaced, modified in a manner that is easily imaginable to those skilled in the art, and the functions are basically the same as the corresponding technical means in the present invention, and the purpose of the invention is basically the same, so that the technical scheme formed by fine tuning the above embodiments still falls into the protection scope of the present invention.
Claims (10)
1. A charging pile multiple insulation detection control method is characterized by comprising the following steps:
physically connecting a charging pile and a charging vehicle, and starting charging;
acquiring the highest allowable charging voltage of a Battery Management System (BMS);
starting a charging module according to the maximum allowable charging voltage of the BMS;
judging whether the charging module is normally started: if so, normally carrying out insulation detection and continuing the charging process; if not, further judging whether the insulation detection times reach a preset value: if the preset value is reached, stopping the charging process according to the result of failed starting; and if the preset value is not reached, returning to the step of starting the charging module according to the highest allowable charging voltage of the BMS.
2. The method for controlling multiple insulation detections of a charging pile according to claim 1, wherein the starting of the charging module according to the maximum allowable charging voltage of the BMS comprises:
and selecting a smaller value from the highest allowable charging voltage of the charging pile and the highest allowable charging voltage of the BMS as a basis, and selecting a corresponding charging module to start.
3. The charging pile multiple insulation detection control method according to claim 1 or 2, wherein the judging whether the charging module is normally started comprises judging whether the charging module is successfully started and whether the voltage inside the DC relay meets the requirement.
4. The charging pile multiple insulation detection control method according to claim 3, wherein if the charging module is abnormally started or the voltage inside the DC relay does not meet the requirement, a shutdown command is sent to the charging module, the charging module is switched out of a main loop, the abnormal state of the charging module is recorded, the charging module is not used any more in the charging process, and the insulation detection is stopped;
and further judging whether the insulation detection times reach a preset value.
5. A charging pile multiple insulation detection control system is characterized by comprising a charging controller and a power controller;
the charging controller comprises a BMS communication management unit, an insulation detection unit and a charging control unit;
the power controller comprises a charging module starting control unit and a charging module switching control unit;
the charging pile multiple insulation detection control system is used for executing the charging pile multiple insulation detection control method according to any one of claims 1 to 4.
6. The charging pile multiple insulation detection control system according to claim 5, wherein the charging controller is in bidirectional communication with a vehicle BMS; the charge controller is in bidirectional communication with the power controller.
7. The charging pile multiple insulation detection control system according to claim 6, wherein the charging controller is in CAN communication with a vehicle BMS in a bidirectional manner; the bidirectional communication between the charge controller and the power controller is CAN communication.
8. The charging pile multiple insulation detection control system according to claim 5, wherein the charging module switching control unit controls the charging module to switch in and switch out a main loop.
9. The system for detecting and controlling multiple insulation of the charging pile according to claim 8, wherein when the charging control unit requests the start of the module, the charging module switching control unit controls the charging modules to be put into a group.
10. The system for detecting and controlling multiple insulation of the charging pile according to claim 9, wherein when the charging module start control unit detects abnormal start of the charging module, the charging module switching control unit switches out the group of charging modules.
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| CN113009227A (en) * | 2021-02-22 | 2021-06-22 | 福建星云电子股份有限公司 | Insulation detection method for electric automobile |
| CN113009227B (en) * | 2021-02-22 | 2023-07-18 | 福建星云电子股份有限公司 | Insulation detection method for electric automobile |
| CN113985178A (en) * | 2021-10-29 | 2022-01-28 | 蜂巢能源(上海)有限公司 | Charging pile state detection method, device, equipment and storage medium |
| CN113985178B (en) * | 2021-10-29 | 2024-06-11 | 章鱼博士智能技术(上海)有限公司 | Charging pile state detection method, device, equipment and storage medium |
| CN113879167A (en) * | 2021-12-03 | 2022-01-04 | 深圳市永联科技股份有限公司 | Charging module group scheduling method, device, equipment and storage medium |
| CN113879167B (en) * | 2021-12-03 | 2022-02-11 | 深圳市永联科技股份有限公司 | Charging module group scheduling method, device, equipment and storage medium |
| CN115257419A (en) * | 2022-08-26 | 2022-11-01 | 阿维塔科技(重庆)有限公司 | Charging method and device and electric vehicle |
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