CN112721833A - Vehicle low-voltage power supply voltage monitoring method and system, storage medium and vehicle - Google Patents
Vehicle low-voltage power supply voltage monitoring method and system, storage medium and vehicle Download PDFInfo
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- CN112721833A CN112721833A CN202110003208.9A CN202110003208A CN112721833A CN 112721833 A CN112721833 A CN 112721833A CN 202110003208 A CN202110003208 A CN 202110003208A CN 112721833 A CN112721833 A CN 112721833A
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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
Abstract
The invention discloses a vehicle low-voltage power supply voltage monitoring method and system, a storage medium and a vehicle, wherein the monitoring method comprises the following steps: the vehicle control unit performs self-checking after power-on wakeup, controls DC/DC power-on when the self-checking is free of fault, and sends a wakeup message to the DC/DC to wake up the DC/DC; the vehicle control unit receives a self-state message fed back after the DC/DC is awakened, executes a vehicle power-on sequence when the DC/DC is determined to be fault-free according to the self-state message, and controls the DC/DC to work after the vehicle is successfully powered on; the vehicle control unit monitors the self power supply voltage to judge whether the low-voltage power supply voltage of the vehicle has a fault, if the low-voltage power supply voltage of the vehicle has the fault, the vehicle control unit executes a vehicle power-off time sequence and controls a vehicle instrument to send out fault prompt information. Therefore, the vehicle low-voltage power supply voltage monitoring method can accurately and effectively monitor the low-voltage power supply voltage of the vehicle, find faults existing in the vehicle low-voltage power supply voltage in time, avoid the phenomenon that the vehicle cannot be powered on and started, and improve user experience.
Description
Technical Field
The invention relates to the technical field of voltage monitoring, in particular to a vehicle low-voltage power supply voltage monitoring method, a computer readable storage medium, a vehicle and a vehicle low-voltage power supply voltage monitoring system.
Background
With the popularization of new energy automobiles in China, particularly the new energy extended-range automobiles are greatly developed, and at present, low-voltage power supply of the extended-range automobiles is mainly provided by 12V storage batteries. That is to say, before the high-voltage power-on is completed, the 12V storage battery provides low-voltage power supply for the whole vehicle by using the self residual electric quantity, after the high-voltage power-on is completed, the 12V storage battery is charged by Direct Current/DC, and then the 12V storage battery provides low-voltage power supply for the whole vehicle. Because the 12V storage battery does not have a communication function, the voltage state of the storage battery cannot be known, and the residual electric quantity of the storage battery cannot be judged, so that the normal operation of a low-voltage power supply system of the whole vehicle is easily influenced, and the power-on starting of the whole vehicle is influenced.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art. Therefore, one objective of the present invention is to provide a method for monitoring a low-voltage power supply voltage of a vehicle, which can accurately and effectively monitor the low-voltage power supply voltage of the vehicle, find a fault in the low-voltage power supply voltage of the vehicle in time, avoid a phenomenon that the vehicle cannot be powered on and started, and improve user experience.
A second object of the invention is to propose a computer-readable storage medium.
A third object of the invention is to propose a vehicle.
A fourth object of the present invention is to provide a vehicle low-voltage supply voltage monitoring system.
In order to achieve the above object, a first aspect of the present invention provides a vehicle low-voltage power supply voltage monitoring method, including: the vehicle control unit performs self-checking after power-on wakeup, controls DC/DC power-on when the self-checking is free of fault, and sends a wakeup message to the DC/DC to wake up the DC/DC; the vehicle controller receives a self-state message fed back after the DC/DC is awakened, executes a vehicle power-on sequence when the DC/DC is determined to be faultless according to the self-state message of the DC/DC, and controls the DC/DC to work after the vehicle is successfully powered on; the vehicle control unit monitors the self power supply voltage to judge whether the low-voltage power supply voltage of the vehicle breaks down or not, executes a vehicle power-off sequence when the low-voltage power supply voltage of the vehicle breaks down, and controls a vehicle instrument to send out fault prompt information.
According to the vehicle low-voltage power supply voltage monitoring method, a vehicle control unit performs self-checking operation after power-on awakening, if self-checking is free of obstacles, the DC/DC is controlled to be powered on, an awakening message is sent to the DC/DC to awaken the DC/DC, the DC/DC can feed back after receiving the awakening message, the vehicle control unit determines that the DC/DC is free of obstacles according to the self-state message after receiving the self-state message fed back by the DC/DC, a vehicle power-on time sequence is executed when the DC/DC is free of obstacles, the DC/DC is controlled to work after the vehicle is powered on successfully, the vehicle control unit monitors the self-power supply voltage to judge whether the vehicle low-voltage power supply voltage fails, the vehicle power-off time sequence is executed when the vehicle low-voltage power supply voltage fails, and a vehicle instrument. Therefore, the vehicle low-voltage power supply voltage monitoring method can accurately and effectively monitor the low-voltage power supply voltage of the vehicle, find faults existing in the vehicle low-voltage power supply voltage in time, avoid the phenomenon that the vehicle cannot be powered on and started, and improve user experience.
In some embodiments of the present invention, before the vehicle control unit is powered on and awakened, the vehicle is started to perform low-voltage power supply on the low-voltage battery, and the vehicle starting system pulls the IGN1 relay to provide KL15 power to the vehicle control unit, so as to power on and awaken the vehicle control unit.
In some embodiments of the invention, the vehicle control unit controls the DC/DC to be powered on and also controls the battery manager and the motor controller to be powered on at the same time by attracting the main relay when the vehicle control unit is self-checked for no fault.
In some embodiments of the present invention, when the vehicle control unit sends a wake-up message to the DC/DC, the vehicle control unit further sends a wake-up message to the battery manager and the motor controller.
In some embodiments of the invention, when the vehicle controller determines that the DC/DC has a fault according to the state message of the DC/DC, the vehicle controller exits the power-on sequence of the vehicle and controls the vehicle instrument to send out fault prompt information.
In some embodiments of the present invention, the monitoring of the vehicle controller to determine whether the vehicle low-voltage power supply voltage has a fault includes: judging whether the self power supply voltage is continuously smaller than a first voltage threshold value for a preset time or not; if so, determining that the low-voltage power supply voltage of the vehicle has a fault; and if not, determining that the low-voltage power supply voltage of the vehicle has no fault.
In some embodiments of the present invention, controlling the DC/DC to work after the entire vehicle is successfully powered on includes: and the vehicle control unit sends an enabling signal and a target output voltage signal to the DC/DC so that the DC/DC outputs a target voltage.
To achieve the above object, a second aspect of the present invention provides a computer-readable storage medium, on which a vehicle low-voltage power supply voltage monitoring program is stored, which, when executed by a processor, implements the vehicle low-voltage power supply voltage monitoring method according to the above embodiment.
According to the computer-readable storage medium of the embodiment of the invention, the processor executes the vehicle low-voltage power supply voltage monitoring program stored on the storage medium, so that the low-voltage power supply voltage of the vehicle can be accurately and effectively monitored, the fault of the vehicle low-voltage power supply voltage can be found in time, the phenomenon that the vehicle cannot be powered on and started is avoided, and the user experience is improved.
In order to achieve the above object, a third aspect of the present invention provides a vehicle, which includes a memory, a processor and a vehicle low-voltage power supply voltage monitoring program stored in the memory and operable on the processor, wherein the processor implements the vehicle low-voltage power supply voltage monitoring method according to the above embodiment when executing the vehicle low-voltage power supply voltage monitoring program.
The vehicle comprises the memory and the processor, the processor executes the vehicle low-voltage power supply voltage monitoring program stored in the memory, the low-voltage power supply voltage of the vehicle can be accurately and effectively monitored, faults existing in the vehicle low-voltage power supply voltage can be found in time, the phenomenon that the vehicle cannot be powered on and started is avoided, and user experience is improved.
In order to achieve the above object, a fourth aspect of the present invention provides a vehicle low-voltage power supply voltage monitoring system, which includes a vehicle controller and a DC/DC, wherein the vehicle controller performs a self-test after power-on wakeup, controls the DC/DC to be powered on when the self-test has no fault, and sends a wakeup message to the DC/DC to wake up the DC/DC; the DC/DC feeds back a self state message to the vehicle control unit after being awakened after being powered on; and the vehicle controller determines that the DC/DC is faultless according to the state message of the DC/DC, executes a vehicle power-on time sequence, controls the DC/DC to work after the vehicle is successfully powered on, monitors the power supply voltage of the vehicle to judge whether the low-voltage power supply voltage of the vehicle is faulted, executes the vehicle power-off time sequence when the low-voltage power supply voltage of the vehicle is faulted, and controls a vehicle instrument to send fault prompt information.
The vehicle low-voltage power supply voltage monitoring system comprises a vehicle controller and a DC/DC, wherein the vehicle controller carries out self-checking after being electrified, then controls the DC/DC to be electrified when the self-checking is faultless, and sends a wake-up message to the DC/DC to wake up the DC/DC, the DC/DC feeds back a self-state message to the vehicle controller after being electrified and woken up, the vehicle controller executes a vehicle electrifying time sequence when the DC/DC is faultless according to the self-state message of the DC/DC, controls the DC/DC to work after the vehicle is electrified successfully, monitors the self-power supply voltage to judge whether the vehicle low-voltage power supply voltage is faulted, and if the vehicle is faulted, the vehicle controller executes the vehicle electrifying time sequence and controls a vehicle instrument to send fault prompt information. Therefore, the vehicle low-voltage power supply voltage monitoring system can accurately and effectively monitor the low-voltage power supply voltage of the vehicle, timely find faults existing in the vehicle low-voltage power supply voltage, avoid the phenomenon that the vehicle cannot be powered on and started, and improve user experience.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
FIG. 1 is a flow chart of a vehicle low voltage supply voltage monitoring method according to one embodiment of the invention;
FIG. 2 is a schematic circuit diagram of a vehicle low-voltage power supply voltage monitoring method according to an embodiment of the invention;
FIG. 3 is a flow chart of a method for monitoring the low voltage supply voltage of a vehicle in accordance with one embodiment of the present invention;
FIG. 4 is a flow chart of a vehicle low voltage supply voltage monitoring method according to another embodiment of the present invention;
FIG. 5 is a block diagram of a vehicle according to an embodiment of the invention;
fig. 6 is a block diagram of a vehicle low-voltage power supply voltage monitoring system according to an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
The following describes a vehicle low-voltage power supply voltage monitoring method and system, a storage medium and a vehicle according to an embodiment of the invention with reference to the accompanying drawings.
Fig. 1 is a flow chart of a vehicle low-voltage power supply voltage monitoring method according to an embodiment of the invention.
As shown in fig. 1, the vehicle low-voltage power supply voltage monitoring method according to the embodiment of the present invention includes the following steps:
and S10, the vehicle control unit performs self-test after power-on wakeup, controls the DC/DC to be powered on when the self-test has no fault, and sends a wakeup message to the DC/DC to wake up the DC/DC.
First, it should be noted that, in some embodiments of the present invention, before the vehicle controller is powered on and awakened, the low-voltage battery is powered on by the vehicle starting system, and the IGN1 relay is engaged by the vehicle starting system to provide KL15 power to the vehicle controller, so as to power on and awaken the vehicle controller.
Specifically, when the vehicle is started, low-voltage power supply may be performed through the low-voltage Battery KL30, and as shown in fig. 2, the vehicle controller vcu (vehicle Control Unit), the motor controller MCU (micro controller Unit), the Battery manager BMS (Battery Management System), and the DC/DC may be performed through the pin a/B. Then, the IGN1 relay is pulled in by a vehicle Start system PEPS (Passive Entry and Start system), so that the IGN1 relay can provide KL15 power to the vehicle controller VCU, and it should be noted that the vehicle controller VCU receives KL15 power through a pin C, so that the vehicle controller VCU can be awakened after receiving KL15 power. It should be noted that the vehicle startup system PEPS may determine a gear position and/or a brake pedal of the vehicle, and activate the IGN1 relay when the gear position and/or the brake pedal meet the condition, so as to wake up the vehicle controller VCU.
After the VCU of the vehicle controller is powered on and awakened, a self-checking stage is entered, the VCU of the vehicle controller detects the functions of the VCU and judges whether an obstacle exists, and the DC/DC is controlled to be powered on when the VCU of the vehicle controller is free of the obstacle through self-checking. In some embodiments of the present invention, as shown in fig. 2, when the vehicle controller VCU is in self-test and has no fault, the battery manager BMS and the motor controller MCU are controlled to be powered on while the DC/DC is controlled to be powered on by engaging the main relay M/C. Specifically, after the self-inspection of the vehicle controller VCU is free from obstacles, the M/C pull-in of the main relay can be controlled, so that the battery manager BMS, the motor controller MCU and the DC/DC are powered on, wherein the battery manager BMS, the motor controller MCU and the DC/DC are powered on through respective pins C. After the DC/DC is powered on, the vehicle Controller VCU sends a wake-up message to the DC/DC to wake up the DC/DC, and more specifically, the vehicle Controller VCU may send the wake-up message to the DC/DC through a CAN (Controller Area Network) bus.
In some embodiments, when the VCU sends the wake-up message to the DC/DC, the VCU may also send the wake-up message to the battery manager BMS and the motor controller MCU, so that the battery manager BMS, the motor controller MCU, and the DC/DC can be woken up to work.
And S20, the vehicle controller receives the self-state message fed back after the DC/DC is awakened, executes the vehicle power-on sequence when the DC/DC is determined to be fault-free according to the self-state message of the DC/DC, and controls the DC/DC to work after the vehicle is successfully powered on.
Specifically, after the DC/DC is awakened, the state of the DC/DC CAN be fed back to the vehicle control unit VCU through the CAN bus, after the vehicle control unit VCU receives a state message sent by the DC/DC, whether the DC/DC is in a fault or not CAN be determined according to the state message of the DC/DC, a vehicle power-on sequence is executed when the DC/DC is in a fault-free state, the DC/DC is controlled to work after the vehicle is successfully powered on, and the DC/DC CAN charge the low-voltage storage battery to prevent the power-on starting program of the vehicle from being influenced by the low electric quantity of the low-voltage storage battery.
In some examples, if the VCU determines that the DC/DC has a fault according to the self-state message of the DC/DC, the VCU exits the power-on sequence of the entire vehicle, controls the vehicle instrument to send out fault prompt information, and reminds a driver of the vehicle of the occurrence of the system fault through the fault prompt information to contact a maintenance person for maintenance. Alternatively, the failure prompt message may be a visual or audible prompt message.
In some embodiments of the present invention, controlling the DC/DC to work after the entire vehicle is successfully powered on includes: the vehicle control unit sends an enable signal and a target output voltage signal to the DC/DC so that the DC/DC outputs the target voltage.
Specifically, after the entire vehicle is successfully powered on, the entire vehicle controller may send an enable signal and a target output voltage signal to the DC/DC, and the DC/DC may output a voltage with the target output voltage signal after receiving the enable signal and the target output voltage signal. Optionally, the target output voltage is 14V.
S30, the vehicle controller monitors the self power supply voltage to judge whether the low voltage power supply voltage of the vehicle has a fault, executes the power-off sequence of the vehicle when the low voltage power supply voltage of the vehicle has a fault, and controls the vehicle instrument to send out fault prompt information.
Specifically, in this embodiment, the VCU may send the hard-wired signal VINP _ DIR _ LVBatt _ V through the pin B to monitor the low-voltage power supply voltage provided by the low-voltage battery, and when it is monitored that the low-voltage power supply voltage has a fault, execute the power-off sequence of the vehicle, and control the vehicle instrument to send the fault prompt message. Optionally, the fault notification message in this embodiment may also be a visual or audible notification message.
In this embodiment, the vehicle control unit monitors self supply voltage to judge whether vehicle low voltage supply voltage breaks down, including: s301, judging whether the self power supply voltage is continuously smaller than a first voltage threshold value for a preset time. S302, if yes, determining that the low-voltage power supply voltage of the vehicle is in fault. S303, if not, determining that the low-voltage power supply voltage of the vehicle has no fault.
Specifically, if the VCU monitors that the continuous preset time of the self power supply voltage is less than the first voltage threshold, for example, the continuous preset time is less than 12.5V for 60 seconds, it is determined that the low-voltage power supply voltage of the whole vehicle fails, so that the power-off time sequence of the whole vehicle is executed, and a driver is reminded of the occurrence of the system failure of the vehicle through reporting the system failure of the vehicle instrument, and contacts a maintenance worker. And if the VCU monitors that the self power supply voltage is not continuously preset for less than the first voltage threshold value, determining that the low-voltage power supply voltage of the vehicle is free of obstacles and performing normal operation.
A vehicle low-voltage supply voltage monitoring method according to an embodiment of the present invention will be described with reference to fig. 4. Specifically, referring to fig. 4, first, after the VCU of the vehicle controller is powered on to wake up and self-test is performed without any obstacle, the wake-up message CAN _ WakeUp is sent to the DC/DC through the CAN bus, and after the C/DC receives the wake-up message, the C/DC wakes up and feeds back the self-state message DC/DC _ Fail to the VCU of the vehicle controller through the CAN bus after waking up. The VCU of the vehicle controller judges whether the DC/DC _ Fail is equal to 1 or not, and if so, the VCU controls the power-off time sequence of the vehicle; if not, an Enable signal DC/DC _ Enable and a DC/DC output Target voltage signal DC/DC _ Target _ voltage are transmitted to the DC/DC through the CAN bus to Enable the DC/DC to output the Target voltage. Then, a self power supply voltage signal VINP _ DIR _ LVBatt _ V of the VCU of the vehicle controller is monitored through hardiness, whether the self power supply voltage is lower than 12.5V for 60 seconds continuously is judged, if yes, the VCU of the vehicle controller controls the whole vehicle to be powered off, and a system fault is reported to remind a driver; and if not, the VCU of the vehicle controller normally operates until the vehicle is powered off.
In conclusion, the vehicle low-voltage power supply voltage monitoring method can accurately and effectively monitor the low-voltage power supply voltage of the vehicle, timely find faults existing in the vehicle low-voltage power supply voltage, avoid the phenomenon that the vehicle cannot be powered on and started, and improve user experience.
Further, the present invention proposes a computer-readable storage medium on which a vehicle low-voltage supply voltage monitoring program is stored, which when executed by a processor implements the vehicle low-voltage supply voltage monitoring method as in the above-described embodiments.
The computer-readable storage medium of the embodiment of the invention executes the vehicle low-voltage power supply voltage monitoring program stored on the storage medium through the processor, can accurately and effectively monitor the low-voltage power supply voltage of the vehicle, finds the fault of the vehicle low-voltage power supply voltage in time, avoids the phenomenon that the vehicle cannot be powered on and started, and improves the user experience.
Fig. 5 is a block diagram of the structure of the vehicle of the embodiment of the invention.
Further, as shown in fig. 5, the present invention provides a vehicle 10, where the vehicle 10 includes a memory 11, a processor 12, and a vehicle low-voltage power supply voltage monitoring program stored on the memory 11 and operable on the processor 12, and when the processor 12 executes the vehicle low-voltage power supply voltage monitoring program, the vehicle low-voltage power supply voltage monitoring method in the above-mentioned embodiment is implemented.
The vehicle comprises the memory and the processor, the processor executes the vehicle low-voltage power supply voltage monitoring program stored in the memory, the low-voltage power supply voltage of the vehicle can be accurately and effectively monitored, faults existing in the vehicle low-voltage power supply voltage can be found in time, the phenomenon that the vehicle cannot be powered on and started is avoided, and user experience is improved.
Fig. 6 is a block diagram of a vehicle low-voltage power supply voltage monitoring system according to an embodiment of the present invention.
Further, as shown in fig. 6, the present invention provides a vehicle low voltage supply voltage monitoring system 100, where the vehicle low voltage supply voltage monitoring system 100 includes a vehicle control unit 101 and a DC/DC 102.
The whole vehicle controller 101 performs self-test after power-on wakeup, controls the DC/DC102 to be powered on when the self-test has no fault, and sends a wakeup message to the DC/DC102 to wake up the DC/DC 102; the DC/DC102 feeds back a self-state message to the whole vehicle controller 101 after being powered on and awakened; the vehicle controller 101 determines that the DC/DC102 is faultless according to the own state message of the DC/DC102, executes a vehicle power-on sequence, controls the DC/DC102 to work after the vehicle power-on succeeds, monitors the own power supply voltage to judge whether the vehicle low-voltage power supply voltage is faulted, executes the vehicle power-off sequence when the vehicle low-voltage power supply voltage is faulted, and controls the vehicle instrument to send out fault prompt information.
Specifically, after the vehicle controller 101 is powered on and awakened, a self-test stage is entered, the vehicle controller 101 detects the functions of the vehicle controller and determines whether an obstacle exists, and the DC/DC102 is controlled to be powered on when the vehicle controller 101 is free of the obstacle through the self-test. After DC/DC102 completes powering up, on-board controller 101 sends a wake-up message to DC/DC102 to wake up DC/DC102, and more specifically, on-board controller 101 may send a wake-up message to DC/DC102 over the CAN bus. After the DC/DC102 is awakened, the state of the DC/DC102 CAN be fed back to the vehicle control unit 101 through the CAN bus, after the vehicle control unit 101 receives a state message sent by the DC/DC102, whether the DC/DC102 has an obstacle or not CAN be determined according to the state message of the DC/DC102, a vehicle power-on sequence is executed when the DC/DC102 has no obstacle, the DC/DC102 is controlled to work after the vehicle is successfully powered on, and the DC/DC102 CAN charge the low-voltage storage battery, so that the power-on starting program of the vehicle is prevented from being influenced by too low electric quantity of the low-voltage storage battery. The vehicle controller 101 may send a hard-wired signal VINP _ DIR _ LVBatt _ V through a pin B to monitor a low-voltage power supply voltage provided by the low-voltage battery, and when it is monitored that the low-voltage power supply voltage has a fault, execute a vehicle powering-off sequence, and control the vehicle instrument to send a fault prompt message. Optionally, the fault notification message in this embodiment may also be a visual or audible notification message.
In some embodiments of the present invention, before the vehicle controller is powered on and awakened, the vehicle is also powered on to enable the low-voltage battery to perform low-voltage power supply, and the IGN1 relay is pulled by the vehicle starting system to provide KL15 power to the vehicle controller, so as to power on and awaken the vehicle controller.
In some embodiments of the invention, the vehicle control unit controls the DC/DC to be powered on by attracting the main relay when the self-test is free of faults, and controls the battery manager and the motor controller to be powered on.
In some embodiments of the present invention, when the vehicle control unit sends the wake-up message to the DC/DC, the vehicle control unit also sends the wake-up message to the battery manager and the motor controller.
In some embodiments of the invention, when the vehicle controller determines that the DC/DC has a fault according to the state message of the DC/DC, the vehicle controller exits the vehicle power-on sequence and controls the vehicle instrument to send out fault prompt information.
In some embodiments of the present invention, the monitoring of the vehicle controller to determine whether the vehicle low-voltage power supply voltage has a fault includes: judging whether the self power supply voltage is continuously smaller than a first voltage threshold value for a preset time or not; if so, determining that the low-voltage power supply voltage of the vehicle has a fault; and if not, determining that the low-voltage power supply voltage of the vehicle has no fault.
In some embodiments of the present invention, controlling the DC/DC to work after the entire vehicle is successfully powered on includes: the vehicle control unit sends an enable signal and a target output voltage signal to the DC/DC so that the DC/DC outputs the target voltage.
It should be noted that other specific embodiments of the vehicle low-voltage power supply voltage monitoring system of this embodiment may refer to the specific embodiments of the vehicle low-voltage power supply voltage monitoring method of the foregoing embodiment, and are not described herein again.
In conclusion, the vehicle low-voltage power supply voltage monitoring system of the embodiment can accurately and effectively monitor the low-voltage power supply voltage of the vehicle, timely find out the fault of the vehicle low-voltage power supply voltage, avoid the phenomenon that the vehicle cannot be powered on and started, and improve the user experience.
It should be noted that the logic and/or steps represented in the flowcharts or otherwise described herein, such as an ordered listing of executable instructions that can be considered to implement logical functions, can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. For the purposes of this description, a "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of the computer-readable medium would include the following: an electrical connection (electronic device) having one or more wires, a portable computer diskette (magnetic device), a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). Additionally, the computer-readable medium could even be paper or another suitable medium upon which the program is printed, as the program can be electronically captured, via for instance optical scanning of the paper or other medium, then compiled, interpreted or otherwise processed in a suitable manner if necessary, and then stored in a computer memory.
It should be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (10)
1. A vehicle low-voltage power supply voltage monitoring method is characterized by comprising the following steps:
the vehicle control unit performs self-checking after power-on wakeup, controls DC/DC power-on when the self-checking is free of fault, and sends a wakeup message to the DC/DC to wake up the DC/DC;
the vehicle controller receives a self-state message fed back after the DC/DC is awakened, executes a vehicle power-on sequence when the DC/DC is determined to be faultless according to the self-state message of the DC/DC, and controls the DC/DC to work after the vehicle is successfully powered on;
the vehicle control unit monitors the self power supply voltage to judge whether the low-voltage power supply voltage of the vehicle breaks down or not, executes a vehicle power-off sequence when the low-voltage power supply voltage of the vehicle breaks down, and controls a vehicle instrument to send out fault prompt information.
2. The vehicle low-voltage power supply voltage monitoring method according to claim 1, wherein before the vehicle controller is powered on and awakened, the vehicle is started to enable the low-voltage storage battery to be powered on at low voltage, and an IGN1 relay is pulled through a vehicle starting system to provide KL15 power to the vehicle controller, so that the vehicle controller is powered on and awakened.
3. The vehicle low-voltage power supply voltage monitoring method according to claim 1, wherein the vehicle control unit controls the DC/DC to be powered on by attracting a main relay when the self-test is failure-free, and controls a battery manager and a motor controller to be powered on simultaneously.
4. The vehicle low-voltage power supply voltage monitoring method according to claim 3, wherein when the vehicle control unit sends the wake-up message to the DC/DC, the vehicle control unit also sends the wake-up message to the battery manager and the motor controller.
5. The vehicle low-voltage power supply voltage monitoring method according to any one of claims 1 to 4, wherein when the vehicle controller determines that the DC/DC has a fault according to the state message of the DC/DC, the vehicle controller exits the vehicle power-on sequence and controls the vehicle instrument to send out fault prompt information.
6. The vehicle low-voltage power supply voltage monitoring method according to any one of claims 1 to 4, wherein the vehicle control unit monitors the self power supply voltage to judge whether the vehicle low-voltage power supply voltage has a fault, and the method comprises the following steps:
judging whether the self power supply voltage is continuously smaller than a first voltage threshold value for a preset time or not;
if so, determining that the low-voltage power supply voltage of the vehicle has a fault;
and if not, determining that the low-voltage power supply voltage of the vehicle has no fault.
7. The vehicle low-voltage power supply voltage monitoring method according to any one of claims 1 to 4, wherein the step of controlling the DC/DC to work after the complete vehicle is successfully powered on comprises the following steps:
and the vehicle control unit sends an enabling signal and a target output voltage signal to the DC/DC so that the DC/DC outputs a target voltage.
8. A computer-readable storage medium, characterized in that a vehicle low-voltage supply voltage monitoring program is stored thereon, which when executed by a processor implements the vehicle low-voltage supply voltage monitoring method according to any one of claims 1 to 7.
9. A vehicle comprising a memory, a processor and a vehicle low-voltage supply voltage monitoring program stored on the memory and operable on the processor, the processor implementing the vehicle low-voltage supply voltage monitoring method according to any one of claims 1 to 7 when executing the vehicle low-voltage supply voltage monitoring program.
10. A vehicle low-voltage power supply voltage monitoring system is characterized by comprising a vehicle control unit and a DC/DC, wherein,
the vehicle control unit performs self-checking after power-on awakening, controls the DC/DC to be powered on when no fault exists in the self-checking, and sends an awakening message to the DC/DC to awaken the DC/DC;
the DC/DC feeds back a self state message to the vehicle control unit after being awakened after being powered on;
and the vehicle controller determines that the DC/DC is faultless according to the state message of the DC/DC, executes a vehicle power-on time sequence, controls the DC/DC to work after the vehicle is successfully powered on, monitors the power supply voltage of the vehicle to judge whether the low-voltage power supply voltage of the vehicle is faulted, executes the vehicle power-off time sequence when the low-voltage power supply voltage of the vehicle is faulted, and controls a vehicle instrument to send fault prompt information.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113085654A (en) * | 2021-05-07 | 2021-07-09 | 地上铁租车（深圳）有限公司 | Automatic power shortage prevention control method and system for low-voltage battery of electric vehicle |
| CN113246731A (en) * | 2021-05-19 | 2021-08-13 | 东风汽车集团股份有限公司 | Method, device and system for processing power-off fault of whole vehicle and storage medium |
| CN113306396A (en) * | 2021-07-01 | 2021-08-27 | 安徽江淮汽车集团股份有限公司 | DCDC (direct current DC) awakening system and method for pure electric vehicle |
| CN115065574A (en) * | 2022-05-25 | 2022-09-16 | 阿波罗智能技术(北京)有限公司 | Wake-up method and device of vehicle controller, electronic equipment and automatic driving vehicle |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013098904A1 (en) * | 2011-12-28 | 2013-07-04 | トヨタ自動車株式会社 | Power storage system |
| CN104648178A (en) * | 2015-02-11 | 2015-05-27 | 安徽江淮汽车股份有限公司 | Charging power-on control method based on battery electric vehicle |
| CN106427581A (en) * | 2016-08-30 | 2017-02-22 | 东风柳州汽车有限公司 | Charging control method for low-voltage accumulator of electric automobile |
| CN109946615A (en) * | 2017-12-15 | 2019-06-28 | 蔚来汽车有限公司 | Method and apparatus for determining the failure of vehicle low-voltage electric system |
| CN209132398U (en) * | 2018-09-18 | 2019-07-19 | 深圳供电局有限公司 | Accumulator failure detection device |
| CN111452745A (en) * | 2020-03-30 | 2020-07-28 | 华为技术有限公司 | Low-voltage storage battery charging method and controller |
-
2021
- 2021-01-04 CN CN202110003208.9A patent/CN112721833A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013098904A1 (en) * | 2011-12-28 | 2013-07-04 | トヨタ自動車株式会社 | Power storage system |
| CN104648178A (en) * | 2015-02-11 | 2015-05-27 | 安徽江淮汽车股份有限公司 | Charging power-on control method based on battery electric vehicle |
| CN106427581A (en) * | 2016-08-30 | 2017-02-22 | 东风柳州汽车有限公司 | Charging control method for low-voltage accumulator of electric automobile |
| CN109946615A (en) * | 2017-12-15 | 2019-06-28 | 蔚来汽车有限公司 | Method and apparatus for determining the failure of vehicle low-voltage electric system |
| CN209132398U (en) * | 2018-09-18 | 2019-07-19 | 深圳供电局有限公司 | Accumulator failure detection device |
| CN111452745A (en) * | 2020-03-30 | 2020-07-28 | 华为技术有限公司 | Low-voltage storage battery charging method and controller |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113085654A (en) * | 2021-05-07 | 2021-07-09 | 地上铁租车（深圳）有限公司 | Automatic power shortage prevention control method and system for low-voltage battery of electric vehicle |
| CN113246731A (en) * | 2021-05-19 | 2021-08-13 | 东风汽车集团股份有限公司 | Method, device and system for processing power-off fault of whole vehicle and storage medium |
| CN113246731B (en) * | 2021-05-19 | 2022-11-25 | 岚图汽车科技有限公司 | Method, device and system for processing power-off fault of whole vehicle and storage medium |
| CN113306396A (en) * | 2021-07-01 | 2021-08-27 | 安徽江淮汽车集团股份有限公司 | DCDC (direct current DC) awakening system and method for pure electric vehicle |
| CN113306396B (en) * | 2021-07-01 | 2023-08-11 | 安徽江淮汽车集团股份有限公司 | DCDC wake-up system and wake-up method for pure electric automobile |
| CN115065574A (en) * | 2022-05-25 | 2022-09-16 | 阿波罗智能技术(北京)有限公司 | Wake-up method and device of vehicle controller, electronic equipment and automatic driving vehicle |
| CN115065574B (en) * | 2022-05-25 | 2024-01-23 | 阿波罗智能技术(北京)有限公司 | Vehicle controller awakening method and device, electronic equipment and automatic driving vehicle |
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