CN115339319A - Method, terminal and storage medium for judging high-voltage power-on fault of pure electric vehicle - Google Patents
Method, terminal and storage medium for judging high-voltage power-on fault of pure electric vehicle Download PDFInfo
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- HEZMWWAKWCSUCB-PHDIDXHHSA-N (3R,4R)-3,4-dihydroxycyclohexa-1,5-diene-1-carboxylic acid Chemical compound O[C@@H]1C=CC(C(O)=O)=C[C@H]1O HEZMWWAKWCSUCB-PHDIDXHHSA-N 0.000 description 3
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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
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
- B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
- B60L3/0084—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to control modules
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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
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
- B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
- B60L3/003—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to inverters
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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
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
- B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
- B60L3/0046—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to electric energy storage systems, e.g. batteries or capacitors
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- Power Engineering (AREA)
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- Sustainable Energy (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention discloses a method, a terminal and a storage medium for judging high-voltage power-on faults of a pure electric vehicle, belonging to the technical field of new energy.
Description
Technical Field
The invention discloses a method, a terminal and a storage medium for judging a high-voltage power-on fault of a pure electric vehicle, and belongs to the technical field of new energy.
Background
In recent years, under the background of energy and environmental crisis, automobile enterprises in all countries around the world vigorously promote the research and development of new energy automobiles. With the development of electric vehicles, people put forward higher requirements on the safety requirements of electric vehicles, so that the electric vehicles can complete the functions of the whole vehicles more efficiently and more safely, and the electric vehicles are one of the targets pursued by new energy complete machine manufacturers.
For most electric vehicles, each high-voltage component of the electric vehicle is electrified by controlling each relay in a high-voltage electrifying process, in the process, the relays and the high-voltage components are also required to be tested to verify whether the relays and the high-voltage components can work reasonably, the reasonable electrifying process can not only reduce electrifying time, but also detect the high-voltage components more perfectly, and the safety of the whole vehicle is improved.
At present, electric vehicles in the industry have own high-voltage power-on and power-off strategies to ensure the normal operation of the electric vehicles. Through the design of the high-voltage power-on and power-off strategy of the electric automobile, the reliability of the basic function of the whole automobile can be improved, and the performance of the whole automobile is further improved.
The patent number CN112373308A discloses a control method for controlling the power-on and power-off sequence of an electric vehicle, which can effectively and safely implement normal power-on and power-off control and emergency power-off control in emergency through controlling elements such as a high-voltage relay, but the corresponding reporting and processing procedures of faults are not considered in the present process, the alternating process between the control signals of each controller is not reflected, and the sequence expression of the switching sequence of the relay is not clear enough.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a method, a terminal and a storage medium for judging the high-voltage power-on fault of a pure electric vehicle, and solves the problems that the current power-on and power-off time sequence control method of the electric vehicle does not consider the corresponding reporting and processing flow of the fault, does not reflect the alternating current process among the control signals of each controller, and simultaneously does not express the time sequence of the opening and closing of a relay clearly.
The technical scheme of the invention is as follows:
according to a first aspect of the embodiment of the invention, a method for judging a high-voltage power-on fault of a pure electric vehicle is provided, which includes:
awakening a VCU (vehicle control unit) after receiving the hard wire signal;
the VCU of the vehicle controller is initialized, if the initialization fails and the fault of the VCU is reported, the high voltage is forbidden, and after the initialization succeeds, the VCU sends a wake-up signal to the gateway to wake up each other vehicle controller;
each other vehicle controller carries out self-checking, if a fault occurs, a corresponding controller fault is reported, if no fault exists, whether a high-voltage fault and a power battery related fault exist is detected, and if the fault prohibits high-voltage application, the next step is executed without the fault;
the VCU of the vehicle controller sends a high-voltage instruction, the pre-charging relay and the main negative relay are closed, whether the voltage values of all points in a circuit are normal or not is detected, whether the pre-charging process is normal or not is judged, if faults such as adhesion, burning and the like exist among the relays, the BMS sends a relay adhesion fault, and if the pre-charging process is normal, the next step is executed;
after the pre-charging is successful, the main and negative relays are attracted, if the main and negative relays are not attracted, the battery management system BMS reports the faults of the main and negative relays, disconnects all attracted relays and prohibits high-voltage electrification; if normal actuation, disconnecting the pre-charging relay, if the pre-charging relay is not disconnected, reporting the adhesion fault of the pre-charging relay, disconnecting all actuated relays, and forbidding high-voltage electrification; if the pre-charging relay is normally closed, the next step is carried out;
after receiving a message of battery ready state reported by a battery management system BMS, the VCU of the vehicle controller sends an enabling instruction and a request voltage value to a DC/DC of a direct current chopper, and if the VCU of the vehicle controller receives a DC/DC abnormal state signal of the direct current chopper, reports a DC/DC fault of the direct current chopper; and if the DC/DC of the direct current chopper works normally, supplying power to a 12V storage battery, waiting for the motor to be electrified, and finishing high-voltage electrification.
Preferably, the high voltage fault includes at least: high voltage interlock faults and high voltage isolation faults.
According to a second aspect of embodiments of the present invention, there is provided a terminal, including:
one or more processors;
a memory for storing the one or more processor-executable instructions;
wherein the one or more processors are configured to:
the method of the first aspect of the embodiments of the present invention is performed.
According to a third aspect of embodiments of the present invention, there is provided a non-transitory computer-readable storage medium, wherein instructions, when executed by a processor of a terminal, enable the terminal to perform the method of the first aspect of embodiments of the present invention.
According to a fourth aspect of embodiments of the present invention, there is provided an application program product, which, when running on a terminal, causes the terminal to perform the method of the first aspect of embodiments of the present invention.
The invention has the beneficial effects that:
the patent provides a method, a terminal and a storage medium for judging high-voltage power-on faults of a pure electric vehicle, and proposes that the states of a relay, a power battery, a high-voltage loop and part of high-voltage components need to be monitored in the high-voltage power-on process of the electric vehicle, detailed judgment is made for possible fault problems, the sequence of the relay is clearly explained, and message exchange among controllers in the power-on process is regulated.
The initialization of each controller in the automobile high-voltage electrifying process is considered, and the high efficiency and the safety of the whole high-voltage electrifying process can be ensured through self-checking of each controller and detection of faults of a high-voltage loop and a battery of the whole automobile. And simultaneously, the function distribution of the whole system is defined, including the respective functions, information interaction and control logic of a vehicle control unit, a charging and distribution system and a battery management system. The process of high pressure electricity on accords with the national standard requirement, steps on the footboard, just can make electric motor car motor electricity on according to the two-step operation of button, has guaranteed the operational safety of car, and the relay switch chronogenesis of definition closes main negative relay earlier, closes the preliminary filling relay again, closes main positive relay at last, breaks off the preliminary filling relay, and whether detection relay that can be better has the adhesion phenomenon, is favorable to promoting the relay life-span simultaneously.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention, as claimed.
Drawings
FIG. 1 is a flowchart illustrating a method for determining a high-voltage power-on fault of a pure electric vehicle according to an exemplary embodiment;
fig. 2 is a schematic block diagram of a terminal structure shown in accordance with an exemplary embodiment.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in a specific case to those of ordinary skill in the art.
Example one
Fig. 1 is a flowchart illustrating a method for determining a high-voltage power-on fault of a pure electric vehicle, which is used in a terminal, according to an exemplary embodiment, and the method includes the following steps:
step 1: a driver presses a key start key (a key door is turned to IG ON), and the whole vehicle wakes up the VCU after receiving a hard-wire signal;
step 2: and the VCU is initialized, if the initialization fails, the fault of the VCU is reported, the high voltage is forbidden, and after the initialization succeeds, the VCU sends a wake-up signal to the gateway so as to wake up each controller.
And step 3: and (4) each controller carries out self-checking, if a fault occurs, the corresponding controller fault is reported, and if no fault occurs, the step 4 is executed.
And 4, step 4: and each controller detects whether high-voltage faults and power battery related faults exist, the high-voltage faults mainly comprise high-voltage interlocking faults and high-voltage insulation faults, the power battery faults comprise seven-level faults, the first five levels do not influence high-voltage power-on and can execute the step 5, if the BMS has the faults of 6 levels or more, corresponding fault levels are reported, and the BMS is prohibited from being powered on.
And 5: the method comprises the following steps that a VCU sends a high-voltage instruction, a pre-charging relay and a main negative relay are closed, whether the voltage value of each point in a detection circuit is normal or not is judged, whether the pre-charging process is normal or not is judged, if faults such as adhesion and burning exist between the relays, a BMS sends the adhesion fault of the relays, and if the pre-charging process is normal, the next step is executed.
Step 6: after the pre-charging is successful, the main and negative relays are closed, if the main and negative relays are not closed, the BMS reports the fault of the main and negative relays, all closed relays are disconnected, and high-voltage power-on is forbidden; if the attraction is normal, disconnecting the pre-charging relay, if the pre-charging relay is not disconnected, reporting the adhesion fault of the pre-charging relay, disconnecting all attracted relays, and forbidding high-voltage power supply; and if the pre-charging relay is normally closed, the next step is carried out.
And 7: after receiving a message that the BMS reports that the battery is ready (the message is not received within 500ms and the VCU enters a fault mode), the VCU sends an enabling instruction and a request voltage value to the DC/DC, and if the VCU receives a DCDC abnormal state signal, the VCU reports a DCDC fault; and if the DCDC works normally, supplying power to the 12V storage battery.
And step 8: at the moment, if a driver wants to drive the automobile, the driver needs to step on the brake pedal firstly and press a key start key to finish the instructions of gear shifting, driving and the like, and after the operation is finished, the motor is electrified, and the high-voltage electrification is finished.
The initialization of each controller in the automobile high-voltage electrifying process is considered, and the high efficiency and the safety of the whole high-voltage electrifying process can be guaranteed through self-checking of each controller and detection of faults of a whole automobile high-voltage loop and a battery. And meanwhile, the function distribution of the whole system is defined, including the respective functions, information interaction and control logic of the whole vehicle control unit, the charging and distribution system and the battery management system. The process of high pressure electricity on accords with the national standard requirement, steps on the footboard, just can make electric motor car motor electricity on according to the two-step operation of button, has guaranteed the operational safety of car, and the relay switch chronogenesis of definition closes main negative relay earlier, closes the preliminary filling relay again, closes main positive relay at last, breaks off the preliminary filling relay, and whether detection relay that can be better has the adhesion phenomenon, is favorable to promoting the relay life-span simultaneously.
Example two
Fig. 2 is a block diagram of a terminal according to an embodiment of the present application, where the terminal may be the terminal in the foregoing embodiment. The terminal 200 may be a portable mobile terminal such as: smart phones, tablet computers. The terminal 200 may also be referred to by other names such as user equipment, portable terminal, etc.
Generally, the terminal 200 includes: a processor 201 and a memory 202.
The processor 201 may include one or more processing cores, such as a 4-core processor, an 8-core processor, and so on. The processor 201 may be implemented in at least one hardware form of a DSP (Digital Signal Processing), an FPGA (Field-Programmable Gate Array), and a PLA (Programmable Logic Array). The processor 201 may also include a main processor and a coprocessor, where the main processor is a processor for Processing data in an awake state, and is also called a Central Processing Unit (CPU); a coprocessor is a low power processor for processing data in a standby state. In some embodiments, the processor 201 may be integrated with a GPU (Graphics Processing Unit), which is responsible for rendering and drawing the content required to be displayed on the display screen. In some embodiments, the processor 201 may further include an AI (Artificial Intelligence) processor for processing computing operations related to machine learning.
Memory 202 may include one or more computer-readable storage media, which may be tangible and non-transitory. Memory 202 may also include high speed random access memory, as well as non-volatile memory, such as one or more magnetic disk storage devices, flash memory storage devices. In some embodiments, the non-transitory computer readable storage medium in the memory 202 is configured to store at least one instruction for execution by the processor 201 to implement a method for determining a high-voltage power-on failure of a pure electric vehicle provided in the present application.
EXAMPLE III
In an exemplary embodiment, a computer-readable storage medium is further provided, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the method for determining a high-voltage power-on fault of a pure electric vehicle is implemented as provided in all inventive embodiments of this application.
Any combination of one or more computer-readable media may be employed. The computer readable medium may be a computer readable signal medium or a computer readable storage medium. A computer readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the foregoing. More specific examples (a non-exhaustive list) of the computer readable storage medium would include the following: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In the context of this document, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.
A computer readable signal medium may include a propagated data signal with computer readable program code embodied therein, for example, in baseband or as part of a carrier wave. Such a propagated data signal may take any of a variety of forms, including, but not limited to, electro-magnetic, optical, or any suitable combination thereof. A computer readable signal medium may be any computer readable medium that is not a computer readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device.
Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.
Computer program code for carrying out operations for aspects of the present invention may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, smalltalk, C + + or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or the connection may be made to an external computer (for example, through the Internet using an Internet service provider).
Example four
In an exemplary embodiment, an application program product is further provided, and includes one or more instructions that can be executed by the processor 201 of the apparatus to perform the method for determining a high-voltage power-on fault of a pure electric vehicle.
While embodiments of the invention have been disclosed above, it is not intended that they be limited to the applications set forth in the specification and examples. It can be applied to all kinds of fields suitable for the present invention. Additional modifications will readily occur to those skilled in the art. It is therefore intended that the invention not be limited to the exact details and illustrations described and illustrated herein, but fall within the scope of the appended claims and equivalents thereof.
Claims (4)
1. A method for judging a high-voltage power-on fault of a pure electric vehicle is characterized by comprising the following steps:
when a hard wire signal is received, a VCU of the vehicle control unit is awakened;
the VCU of the vehicle controller is initialized, if the VCU fails to report a fault, the VCU is prohibited from being powered on, and after the initialization succeeds, the VCU sends a wake-up signal to the gateway to wake up each other vehicle controller;
each other vehicle controller carries out self-checking, if a fault occurs, a corresponding controller fault is reported, if no fault exists, whether a high-voltage fault and a power battery related fault exist is detected, and if the fault does not exist, the high voltage is forbidden, and the next step is executed without the fault;
the method comprises the following steps that a VCU of the vehicle control unit sends a high-voltage instruction, a pre-charging relay and a main negative relay are closed, whether voltage values of all points in a circuit are normal or not is detected, whether the pre-charging process is normal or not is judged, if faults such as adhesion and burning exist among the relays, a BMS sends a relay adhesion fault, and if the pre-charging process is normal, the next step is executed;
after the pre-charging is successful, attracting the main and negative relays, if the main and negative relays are not attracted, reporting the faults of the main and negative relays by the battery management system BMS, disconnecting all attracted relays and forbidding high-voltage power-on, if the main and negative relays are normally attracted, disconnecting the pre-charging relay, if the pre-charging relay is not disconnected, reporting the adhesion faults of the pre-charging relay, disconnecting all attracted relays and forbidding high-voltage power-on, and if the pre-charging relay is normally attracted, performing the next step;
the method comprises the steps that after a message that a battery management system BMS reports that a battery is ready, a vehicle control unit VCU sends an enabling instruction and a request voltage value to a direct current chopper DC/DC, if the vehicle control unit VCU receives a direct current chopper DC/DC abnormal state signal, a direct current chopper DC/DC fault is reported, if the direct current chopper DC/DC works normally, power is supplied to a 12V storage battery, a motor is waited to be powered on, and high-voltage power-on is finished.
2. The pure electric vehicle high-voltage power-on fault judgment method according to claim 1, wherein the high-voltage fault at least comprises: high voltage interlock faults and high voltage isolation faults.
3. A terminal, comprising:
one or more processors;
a memory for storing the one or more processor-executable instructions;
wherein the one or more processors are configured to:
the pure electric vehicle high-voltage power-on fault judgment method according to claim 1 or 2 is executed.
4. A non-transitory computer-readable storage medium, wherein instructions in the storage medium, when executed by a processor of a terminal, enable the terminal to perform the method for determining a high-voltage power-on fault of a pure electric vehicle according to claim 1 or 2.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210754886.3A CN115339319A (en) | 2022-06-29 | 2022-06-29 | Method, terminal and storage medium for judging high-voltage power-on fault of pure electric vehicle |
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| CN202210754886.3A CN115339319A (en) | 2022-06-29 | 2022-06-29 | Method, terminal and storage medium for judging high-voltage power-on fault of pure electric vehicle |
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| CN117227482A (en) * | 2023-11-10 | 2023-12-15 | 徐州徐工汽车制造有限公司 | Fault recovery method and system, whole vehicle controller and storage medium |
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| US20120123622A1 (en) * | 2010-11-11 | 2012-05-17 | Shogo Miyazaki | Control device for vehicle |
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Application publication date: 20221115 |