CN110466355B - Intelligent high-voltage delay power-off control method for electric automobile and electric automobile - Google Patents
Intelligent high-voltage delay power-off control method for electric automobile and electric automobile Download PDFInfo
- Publication number
- CN110466355B CN110466355B CN201910807322.XA CN201910807322A CN110466355B CN 110466355 B CN110466355 B CN 110466355B CN 201910807322 A CN201910807322 A CN 201910807322A CN 110466355 B CN110466355 B CN 110466355B
- Authority
- CN
- China
- Prior art keywords
- power
- voltage
- vehicle
- time
- delay
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
Abstract
The invention relates to the technical field of electric automobiles, in particular to an intelligent high-voltage delay power-off control method for an electric automobile and the electric automobile. The control method comprises the following steps: after the power-off signal is detected, generating a low-voltage power-off command and a high-voltage power-off command; controlling the whole vehicle to perform low-voltage reduction according to the low-voltage reduction instruction, and starting time delay timing; in the time delay timing process, judging whether the vehicle has a power-on signal again; and if the vehicle is not electrified again, controlling the whole vehicle to carry out high-voltage and low-voltage electrification according to the high-voltage and low-voltage electrification instruction when the time delay timing is finished. According to the intelligent high-voltage delay power-down control method for the electric automobile and the automobile, after the power-down signal is detected, low-voltage power-down is firstly carried out, after the delay power-down time passes, the whole automobile is controlled to carry out high-voltage power-down, various scenes are adapted, and repeated high-voltage power-up and power-down in a short time are avoided.
Description
Technical Field
The invention relates to the technical field of electric automobiles, in particular to an intelligent high-voltage delay power-off control method for an electric automobile and the electric automobile.
Background
In the prior art, a vehicle power-off control method generally adopts a mode of immediately powering off high-voltage electricity after receiving a power-off command, so that the power-off request which cannot be met or is not expected by a driver is influenced in some special scenes, and the service life of a high-voltage relay is also influenced. For example, the driver just gets off temporarily and leaves, returns very fast, if the high pressure undervoltage at this moment, the relay disconnection can lead to the high pressure in the short time to get on or off the electricity repeatedly, influences the relay life-span. If the high voltage of the vehicle to be rescued is also immediately powered off at the moment, the rescue power-on failure caused by the fact that the storage battery of the vehicle is not fully charged can occur.
Disclosure of Invention
The invention aims to provide an intelligent high-voltage delay power-off control method for an electric automobile and the electric automobile, aiming at the defects in the prior art.
The object of the invention can be achieved by the following technical measures:
the invention provides an intelligent high-voltage delay power-off control method for an electric automobile, which comprises the following steps:
after the power-off signal is detected, generating a low-voltage power-off command and a high-voltage power-off command;
controlling the whole vehicle to perform low-voltage reduction according to the low-voltage reduction instruction, and starting time delay timing;
in the time delay timing process, judging whether the vehicle has a power-on signal again;
and if the vehicle is not electrified again, controlling the whole vehicle to carry out high-voltage and low-voltage electrification according to the high-voltage and low-voltage electrification instruction when the time delay timing is finished.
Preferably, the step of controlling the entire vehicle to perform low-voltage power-down according to the low-voltage power-down command and starting the time delay timing further includes:
acquiring at least one operation record and at least one vehicle state information of the current driving, wherein the at least one operation record comprises one or more of a gear operation record, a brake operation record, an accelerator operation record or an air conditioner operation record, and the at least one vehicle state information comprises one or more of a vehicle speed, a battery electric quantity, a battery temperature, a battery discharge current or an air conditioner state;
and determining the high-voltage delay power-off time of the current driving according to the power-on and power-off history record, the at least one operation record and the at least one vehicle state information.
Preferably, the determining the high-voltage delay power-off time of the current driving according to the power-on and power-off history record, the at least one operation record and the at least one vehicle state information includes:
judging whether the vehicle has a fault according to the at least one operation record and the at least one vehicle state information to obtain a first judgment result;
and when the first judgment result is yes, determining the high-voltage delay power-off time of the traveling crane according to a first preset strategy.
Preferably, the determining the high-voltage delay power-off time of the current driving according to the power-on and power-off history record, the at least one operation record and the at least one vehicle state information includes:
judging whether the current battery temperature is greater than a preset temperature threshold value or not to obtain a second judgment result;
and when the second judgment result is yes, determining the high-voltage delay power-off time of the traveling crane according to a second preset strategy, monitoring the battery temperature in real time in the delay timing process, and sending the battery temperature to the background system through the vehicle-mounted T-BOX.
Preferably, the determining the high-voltage delay power-off time of the current driving according to the power-on and power-off history record, the at least one operation record and the at least one vehicle state information includes:
and matching the power-on time and the power-off time of the running vehicle with the power-on and power-off historical records to obtain a user behavior corresponding to the power-on and power-off information of the running vehicle, and determining the high-voltage delay power-off time of the running vehicle according to a preset strategy corresponding to the user behavior.
Preferably, the control method further includes:
judging whether the power-on and power-off operation of the traveling crane is normal operation or not according to at least one operation record, at least one vehicle state information, power-on time, power-off time and power-on and power-off interval time of the traveling crane;
and when the judgment result is yes, corresponding power-on and power-off information is formed according to the power-on time and the power-off time of the driving.
Preferably, the control method further includes:
and carrying out statistical analysis on the recent power-on and power-off information to obtain a power-on and power-off historical record of a user and a user behavior corresponding to the power-on and power-off historical record, wherein the power-on and power-off historical record comprises power-on times in different time periods, power-off times in different time periods and/or power-on times in different time interval lengths from the last power-off.
Preferably, the control method further includes:
after the electrifying signal is detected, at least one operation signal and at least one vehicle state signal of the current driving are obtained, corresponding operation records are generated according to the operation signals, and corresponding vehicle state information is generated according to the vehicle state signals.
Preferably, the control method further includes:
if the vehicle has the power-on signal again, stopping time delay and timing, acquiring at least one operation signal and at least one vehicle state signal of the driving, generating a corresponding operation record according to the operation signal, and generating corresponding vehicle state information according to the vehicle state signal.
Preferably, the controlling the whole vehicle to perform high-voltage power-down according to the high-voltage power-down command comprises:
the vehicle control unit sends a motor enabling releasing instruction to the motor controller;
the vehicle control unit sends a work stopping instruction to the direct current-direct current converter and a high-voltage power-off instruction to the battery management system so as to control the disconnection of a main positive contactor and a main negative contactor of the power battery;
and the vehicle control unit controls the power distribution device to stop supplying power to the motor controller, the direct current-direct current converter and the battery management system.
The invention also provides an electric vehicle, which comprises a processor and a memory coupled with the processor,
the memory stores program instructions for realizing the intelligent high-voltage delay power-off control method of the electric automobile;
the processor is used for executing the program instructions stored in the memory so as to carry out intelligent high-voltage delay power-off control on the electric automobile.
According to the intelligent high-voltage delay power-down control method for the electric automobile and the electric automobile, after the power-down signal is detected, low-voltage power-down is firstly carried out, after the delay power-down time passes, the whole automobile is controlled to carry out high-voltage power-down, various scenes are adapted, and repeated high-voltage power-up and power-down in a short time are avoided.
Drawings
Fig. 1 is a flowchart of an intelligent high-voltage delay power-off control method for an electric vehicle according to embodiment 1 of the present invention.
Fig. 2 is a flowchart of an intelligent high-voltage delay power-off control method for an electric vehicle according to embodiment 2 of the present invention.
Fig. 3 is a block diagram of an electric vehicle intelligent high-voltage delay power-off control device according to an embodiment of the invention.
Fig. 4 is a block diagram of the electric vehicle according to the embodiment of the present invention.
Fig. 5 is a block diagram of an electric vehicle according to another 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 and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In order to make the description of the present disclosure more complete and complete, the following description is given for illustrative purposes with respect to the embodiments and examples of the present invention; it is not intended to be the only form in which the embodiments of the invention may be practiced or utilized. The embodiments are intended to cover the features of the various embodiments as well as the method steps and sequences for constructing and operating the embodiments. However, other embodiments may be utilized to achieve the same or equivalent functions and step sequences.
The embodiment 1 of the present invention provides an intelligent high-voltage delay power-off control method for an electric vehicle, and please refer to fig. 1, where the control method includes:
and S101, generating a low-voltage power-down command and a high-voltage power-down command after detecting the power-down signal.
And S102, controlling the whole vehicle to perform low-voltage power-down according to the low-voltage power-down instruction, and starting time delay timing.
S103, in the time delay timing process, whether the vehicle has a power-on signal again is judged.
And S104, if the vehicle is not electrified again, controlling the whole vehicle to be electrified under high voltage according to the high voltage electrifying instruction when the time delay timing is finished.
According to the intelligent high-voltage delay power-down control method for the electric automobile, after the power-down signal is detected, low-voltage power-down is firstly carried out, after the delay power-down time passes, the whole automobile is controlled to carry out high-voltage power-down, various scenes are adapted, and repeated high-voltage power-up and power-down in a short time are avoided.
An embodiment 2 of the present invention provides an intelligent high-voltage delay power-off control method for an electric vehicle, and please refer to fig. 2, where the control method includes:
and S201, generating a low-voltage power-down command and a high-voltage power-down command after detecting the power-down signal.
S202, at least one operation record and at least one vehicle state information of the current driving are obtained, the at least one operation record comprises one or more of a gear operation record, a brake operation record, an accelerator operation record or an air conditioner operation record, and the at least one vehicle state information comprises one or more of a vehicle speed, a battery electric quantity, a battery temperature, a battery discharging current or an air conditioner state.
In this embodiment, the operation record includes one or more of a shift operation record, a brake operation record, a throttle operation record, or an air conditioner operation record, and the vehicle state information includes one or more of a vehicle speed, a battery level, a battery temperature, a battery discharge current, or an air conditioner state.
Specifically, at least one operation record and at least one vehicle state information of the current driving are generated through the following steps: after the electrifying signal is detected, at least one operation signal and at least one vehicle state signal of the current driving are obtained, corresponding operation records are generated according to the operation signals, and corresponding vehicle state information is generated according to the vehicle state signals.
In this embodiment, the operation signal is a trigger signal, and is not a continuous monitoring signal, specifically, the operation signal may include one or more of a gear operation signal, an accelerator operation signal, a brake (brake) operation signal, and an air conditioner operation signal, and respectively indicate that the driver has performed gear operation, has stepped on the accelerator, has stepped on the brake, and has opened or closed the air conditioner during the driving process, and a corresponding operation record is generated according to the operation signal. In this embodiment, the vehicle state signal may be a continuous signal, the vehicle state signal includes one or more of a vehicle speed signal, a battery power signal, a battery temperature signal, a battery discharging current signal, or an air conditioning state signal, and the correspondingly formed vehicle state information respectively indicates a change of a vehicle speed with time, a change of a battery power with time, a change of a battery temperature with time, a change of a battery discharging current with time, or an excessive change of an air conditioning state of the driver during a current driving process.
And S203, determining the high-voltage delay power-off time of the current driving according to the power-on and power-off historical record, the at least one operation record and the at least one vehicle state information.
In this embodiment, the power-on and power-off information of a driving vehicle with multiple normal operations is stored, and the power-on and power-off history record is obtained by performing statistical analysis on the power-on and power-off information in the near term (for example, the recent 100 times), specifically, taking the driving vehicle as an example, after a power-off signal is detected, first, whether the power-on and power-off operation of the driving vehicle is a normal operation is determined according to at least one operation record of the driving vehicle, at least one vehicle state information, power-on time, power-off time and power-on and power-off interval time; and then, when the judgment result is yes, corresponding power-on and power-off information is formed according to the power-on time and the power-off time of the driving. That is, only if the driving is normal operation, the corresponding power on/off information is formed. The normal operation generally includes a gear engaging operation, an accelerator operation, a brake operation, or an on/off operation of an air conditioner, in addition to the power-on operation and the power-off operation, and meanwhile, the vehicle state changes in the driving process, for example, the vehicle speed changes, the battery power changes, the air conditioner state changes, and the like; the abnormal operation includes a malfunction or special operation by the driver or other person, for example, (1) repeatedly powering on and off; (2) after power-on, immediately powering off in short time; (3) the vehicle is not driven after being electrified, and the power is immediately turned off after the air conditioner is only started; at this time, only the key is inserted or rotated, no other operation record is recorded, and no change in the vehicle state is made, for example, the vehicle speed is always 0.
In this embodiment, the recent power-on and power-off information is statistically analyzed to obtain a power-on and power-off history of the user and a user behavior corresponding to the power-on and power-off history, where the power-on and power-off history includes power-on times in different time periods, power-off times in different time periods, and/or power-on times in different time interval lengths. For example, the number of power downs in different periods: 0-1 point, 1 time; 5-6 points, 1 time; … …, respectively; 8-9 points, 35 times; 18-19 points, 40 times. And (3) counting the power-on times of different time interval length sections according to the time interval between the power-on time and the last power-off time: within 1min, 15 times; within 3min, 11 times; … …, respectively; 480min, 24 times. Analyzing the power-on and power-off historical records to obtain corresponding user behaviors, for example, in power-off times of different time periods, 8-9 points and 35 times, stopping and flameout after arriving at a work place correspondingly; and (4) stopping and extinguishing the automobile after arriving at home after work for 40 times at 18-19 points. The power-on times of different time interval length sections are as follows: powering up again more than 480min after powering off, and corresponding to work parking and work restarting; powering on within 1min after powering off, and handling a first event corresponding to temporary parking of a driver; powering on within 3min after powering off, and temporarily stopping the driver to handle a second event, wherein the driver passes through a milky tea shop on the way to work or off the work, and stops the driver to buy a cup of milky tea. Further, a plurality of different types of power-on and power-off historical records can be subjected to cross analysis, such as power-off times: and at 18-19 points, performing 40 times, wherein in 40 times, the power is supplied again after 5 times of power off for 3min (corresponding to the second event of temporary parking), and the power is supplied again after more than 600min after 35 times of power off (corresponding to the power on when the vehicle is parked next day after work to home and is on work in the morning). Through the statistical analysis of the power-on and power-off information, a plurality of user behaviors of a driver (user) corresponding to the power-off operation can be identified, for example, temporary parking on the way to work or work, parking at the place to work, parking home after work in due order, parking home after work and parking outside during work are included.
In step S203, it can be identified whether the vehicle has a fault according to the power-up and power-down history, the at least one operation record and the at least one vehicle state information, for example, it is identified that the vehicle battery is power-down or damaged according to the vehicle state information, the vehicle needs to wait for rescue, the high-voltage power-down delay time needs to be as long as possible because the time of the rescue arrival is unpredictable, at this time, a first preset strategy is formulated for the rescue of the vehicle fault, and the high-voltage power-down time is calculated according to the first preset strategy. Further, when the vehicle does not break down, whether the battery is overheated can be identified according to the battery temperature, when the battery is overheated, the cooling time of the battery temperature reduced to the normal temperature is calculated according to the battery temperature, the high-voltage power-off delay time is greater than or equal to the cooling time, so that during the cooling, the battery temperature change state can be monitored and uploaded to a background system, a driver can timely process the battery temperature change abnormity through the data of the background system, the vehicle spontaneous combustion caused by sudden rise of the battery temperature is prevented, at the moment, a second preset strategy is formulated by monitoring the battery temperature change according to the battery overheating requirement, and the power-off time during high-voltage calendering is calculated according to the second preset strategy. Further, when the vehicle does not have a fault and the battery is not overheated, the user behavior corresponding to the power-off operation of the driving at this time is identified according to the power-on and power-off history record, the at least one operation record and the at least one vehicle state information, a preset strategy is formulated for each user behavior, and the power-off time at the time of high calendering is determined according to the preset strategy corresponding to the user behavior. Specifically, the step of determining the high-voltage delay power-off time of the current driving according to the power-on and power-off history record, the at least one operation record and the at least one vehicle state information comprises the following steps: judging whether the vehicle has a fault according to the at least one operation record and the at least one vehicle state information to obtain a first judgment result; when the first judgment result is yes, determining the high-voltage delay power-off time of the traveling crane according to a first preset strategy; when the first judgment result is negative, judging whether the current battery temperature is greater than a preset temperature threshold value or not to obtain a second judgment result; when the second judgment result is yes, determining the high-voltage delay power-off time of the traveling crane according to a second preset strategy, monitoring the battery temperature in real time in the delay timing process, and sending the battery temperature to a background system through the vehicle-mounted T-BOX; and when the second judgment result is negative, matching the power-on time and the power-off time of the vehicle with the power-on and power-off historical record to obtain a user behavior corresponding to the power-on and power-off information of the vehicle, and determining the high-voltage delay power-off time of the vehicle according to a preset strategy corresponding to the user behavior.
And S204, controlling the whole vehicle to perform low-voltage power-down according to the low-voltage power-down instruction, and starting time delay timing.
In the embodiment, after the low-voltage power supply is cut off, each low-voltage controller stops working, controllers of an instrument, a large screen and a vehicle lamp are powered off, a vehicle is in a static and vehicle locking state, and meanwhile, a motor controller controls a motor to keep an enabling state and sends a rotating speed signal to a vehicle control unit; the battery management unit continues to perform high-voltage control on the battery, and simultaneously monitors the battery state and sends state information to the vehicle control unit and the vehicle-mounted T-BOX; the vehicle-mounted T-BOX collects vehicle state signals in real time, particularly battery states, sends the vehicle state signals to a background system (cloud), is monitored by the cloud, and sends related information to a mobile phone of a user for reminding after abnormality is found; the DC-DC converter can work when the high voltage is not powered off, so as to supply power to the whole vehicle and charge the storage battery.
S205, in the process of time delay and timing, whether the vehicle has a power-on signal again is judged.
In this embodiment, if the vehicle has a power-on signal again, the delay timing is stopped, at least one operation signal and at least one vehicle state signal of the current driving are obtained, a corresponding operation record is generated according to the operation signal, and corresponding vehicle state information is generated according to the vehicle state signal.
And S206, if the vehicle is not electrified again, controlling the whole vehicle to be electrified under high voltage according to the high voltage electrifying instruction when the time delay timing is finished.
In this embodiment, the controlling the entire vehicle to perform high-voltage power-down according to the high-voltage power-down command includes: the vehicle control unit sends a motor enabling releasing instruction to the motor controller; the vehicle control unit sends a work stopping instruction to the direct current-direct current converter and a high-voltage power-off instruction to the battery management system so as to control the disconnection of a main positive contactor and a main negative contactor of the power battery; and the vehicle control unit controls the power distribution device to stop supplying power to the motor controller, the direct current-direct current converter and the battery management system.
In this embodiment, if the vehicle has a power-on signal again, the time delay and timing are stopped, at least one operation signal and at least one vehicle state signal of the current driving are obtained again, a corresponding operation record is generated according to the operation signal, and corresponding vehicle state information is generated according to the vehicle state signal.
Based on the same inventive concept, the embodiment of the invention also provides an intelligent high-voltage delay power-off control device of the electric automobile, which is as the following embodiment. The principle of solving the problems of the intelligent high-voltage delay power-off control device of the electric automobile is similar to that of the intelligent high-voltage delay power-off control method for the electric automobile, so the implementation of the intelligent high-voltage delay power-off control device of the electric automobile can refer to the implementation of the intelligent high-voltage delay power-off control method for the electric automobile, and repeated parts are not described again. As used hereinafter, the terms "unit" or "sub-module" or "module" may implement a combination of software and/or hardware of predetermined functions. While the system described in the embodiments below is preferably implemented in software, implementations in hardware, or a combination of software and hardware are also possible and contemplated.
Fig. 3 shows an embodiment of the intelligent high-voltage delay power-off control device of the electric vehicle. As shown in fig. 3, in the present embodiment, the control device 100 is built in the vehicle control unit, and the control device 100 includes: the system comprises a signal acquisition module 10, a calculation module 20, an execution module 30 and a timing module 40, wherein the signal acquisition module 10 is configured to acquire at least one operation signal and at least one vehicle state signal of a current vehicle after detecting a power-on signal, generate a corresponding operation record according to the operation signal, and generate corresponding vehicle state information according to the vehicle state signal, where the operation record includes one or more of a gear operation record, a brake operation record, an accelerator operation record or an air conditioner operation record, and the vehicle state information includes one or more of a vehicle speed, a battery level, a battery temperature, a battery discharge current or an air conditioner state; the computing module 20 is configured to generate a low-voltage power-down instruction and a high-voltage power-down instruction after detecting the power-down signal; acquiring at least one operation record and at least one vehicle state information of the current driving, and determining the high-voltage delay power-off time of the current driving according to the power-on and power-off history record, the at least one operation record and the at least one vehicle state information; the execution module 30 is used for controlling the whole vehicle to perform low-voltage power-down according to the low-voltage power-down instruction; the timing module 40 is used for performing time delay timing; the signal acquisition module 10 is further configured to determine whether the vehicle has a power-on signal again in the time delay timing process; the execution module 30 is further configured to control the entire vehicle to perform high-voltage and low-voltage operations according to the high-voltage and low-voltage operation instruction when the delay timing is finished if the vehicle is not powered on again.
In a preferred embodiment, the calculation module 20 is further configured to perform statistical analysis on the recent power-up and power-down information to obtain a power-up and power-down history record of the user and a user behavior corresponding to the power-up and power-down history record, where the power-up and power-down history record includes power-up times in different time periods, power-down times in different time periods, and/or power-up times in different time interval lengths.
In a preferred embodiment, the calculation module 20 is further configured to, after detecting the power-off signal, determine whether the power-on/off operation of the current driving is normal operation according to at least one operation record of the current driving, at least one vehicle state information, power-on time, power-off time, and power-on/off interval time; and when the judgment result is yes, corresponding power-on and power-off information is formed according to the power-on time and the power-off time of the driving.
Fig. 4 shows an embodiment of the electric vehicle of the present invention. As shown in fig. 4, in the present embodiment, the electric vehicle includes: the vehicle control unit comprises the control device 100, the power distribution module is used for supplying power to the motor controller, the battery management system, the DC-DC converter, the vehicle-mounted T-BOX and the low-voltage controller, the vehicle-mounted T-BOX acquires state parameters acquired by the controllers when the vehicle is not powered off at high voltage and uploads the state parameters to a background system, and the background system sends the state parameters to a mobile terminal of a user, for example, when the high voltage is not powered off, the battery management system monitors the battery state in real time, collects the battery state parameters and feeds the battery state parameters back to the vehicle control unit and the vehicle-mounted T-BOX.
Referring to fig. 5, fig. 5 is a schematic structural diagram of an electric vehicle according to an embodiment of the invention. As shown in fig. 5, the electric vehicle 50 includes a processor 51 and a memory 52 coupled to the processor 51.
The memory 52 stores program instructions for implementing the intelligent high-voltage delay power-off control method of the electric vehicle according to any one of the embodiments.
The processor 51 is used for executing the program instructions stored in the memory 52 to perform the intelligent high-voltage delay power-off control of the electric vehicle.
The processor 51 may also be referred to as a CPU (Central Processing Unit). The processor 51 may be an integrated circuit chip having signal processing capabilities. The processor 51 may also be a general purpose processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. An intelligent high-voltage delay power-off control method for an electric automobile is characterized by comprising the following steps:
after the power-off signal is detected, generating a low-voltage power-off command and a high-voltage power-off command;
controlling the whole vehicle to perform low-voltage reduction according to the low-voltage reduction instruction, and starting time delay timing;
in the time delay timing process, judging whether the vehicle has a power-on signal again;
if the vehicle is not electrified again, controlling the whole vehicle to carry out high-voltage power-down according to the high-voltage power-down instruction when the time delay timing is finished;
the step of controlling the whole vehicle to carry out low-voltage power-down according to the low-voltage power-down instruction and starting time delay timing further comprises the following steps of:
acquiring at least one operation record and at least one vehicle state information of the current driving, wherein the at least one operation record comprises one or more of a gear operation record, a brake operation record, an accelerator operation record or an air conditioner operation record, and the at least one vehicle state information comprises one or more of a vehicle speed, a battery electric quantity, a battery temperature, a battery discharge current or an air conditioner state;
and determining the high-voltage delay power-off time of the current driving according to the power-on and power-off history record, the at least one operation record and the at least one vehicle state information.
2. The intelligent high-voltage delay power-off control method for the electric automobile according to claim 1, wherein the determining the high-voltage delay power-off time of the current driving according to the power-on and power-off history record, the at least one operation record and the at least one vehicle state information comprises:
judging whether the vehicle has a fault according to the at least one operation record and the at least one vehicle state information to obtain a first judgment result;
and when the first judgment result is yes, determining the high-voltage delay power-off time of the traveling crane according to a first preset strategy.
3. The intelligent high-voltage delay power-off control method for the electric automobile according to claim 1 or 2, wherein the determining the high-voltage delay power-off time of the current driving according to the power-on and power-off history record, the at least one operation record and the at least one vehicle state information comprises:
judging whether the current battery temperature is greater than a preset temperature threshold value or not to obtain a second judgment result;
and when the second judgment result is yes, determining the high-voltage delay power-off time of the traveling crane according to a second preset strategy, monitoring the battery temperature in real time in the delay timing process, and sending the battery temperature to the background system through the vehicle-mounted T-BOX.
4. The intelligent high-voltage delay power-off control method for the electric automobile according to claim 1, wherein the determining the high-voltage delay power-off time of the current driving according to the power-on and power-off history record, the at least one operation record and the at least one vehicle state information comprises:
and matching the power-on time and the power-off time of the running vehicle with the power-on and power-off historical records to obtain a user behavior corresponding to the power-on and power-off information of the running vehicle, and determining the high-voltage delay power-off time of the running vehicle according to a preset strategy corresponding to the user behavior.
5. The intelligent high-voltage delay power-off control method for the electric automobile according to any one of claims 1 to 4, characterized by further comprising the following steps:
judging whether the power-on and power-off operation of the traveling crane is normal operation or not according to at least one operation record, at least one vehicle state information, power-on time, power-off time and power-on and power-off interval time of the traveling crane;
and when the judgment result is yes, corresponding power-on and power-off information is formed according to the power-on time and the power-off time of the driving.
6. The intelligent high-voltage delay power-off control method of the electric automobile according to any one of claims 1-5, characterized by further comprising the following steps:
and carrying out statistical analysis on the recent power-on and power-off information to obtain a power-on and power-off historical record of a user and a user behavior corresponding to the power-on and power-off historical record, wherein the power-on and power-off historical record comprises power-on times in different time periods, power-off times in different time periods and/or power-on times in different time interval lengths from the last power-off.
7. The intelligent high-voltage delay power-off control method of the electric vehicle according to claim 1, further comprising:
after the electrifying signal is detected, at least one operation signal and at least one vehicle state signal of the current driving are obtained, corresponding operation records are generated according to the operation signals, and corresponding vehicle state information is generated according to the vehicle state signals.
8. The intelligent high-voltage delay power-off control method of the electric vehicle according to claim 1, further comprising:
if the vehicle has the power-on signal again, stopping time delay and timing, acquiring at least one operation signal and at least one vehicle state signal of the driving, generating a corresponding operation record according to the operation signal, and generating corresponding vehicle state information according to the vehicle state signal.
9. The intelligent high-voltage time-delay power-off control method of the electric automobile according to claim 1, wherein the step of controlling the whole automobile to perform high-voltage power-off according to the high-voltage power-off instruction comprises the following steps:
the vehicle control unit sends a motor enabling releasing instruction to the motor controller;
the vehicle control unit sends a work stopping instruction to the direct current-direct current converter and a high-voltage power-off instruction to the battery management system so as to control the disconnection of a main positive contactor and a main negative contactor of the power battery;
and the vehicle control unit controls the power distribution device to stop supplying power to the motor controller, the direct current-direct current converter and the battery management system.
10. An electric vehicle comprising a processor and a memory coupled to the processor,
the memory stores program instructions for implementing the intelligent high-voltage time-delay power-off control method of the electric automobile according to any one of claims 1-9;
the processor is used for executing the program instructions stored in the memory so as to carry out intelligent high-voltage delay power-off control on the electric automobile.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910807322.XA CN110466355B (en) | 2019-08-29 | 2019-08-29 | Intelligent high-voltage delay power-off control method for electric automobile and electric automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910807322.XA CN110466355B (en) | 2019-08-29 | 2019-08-29 | Intelligent high-voltage delay power-off control method for electric automobile and electric automobile |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110466355A CN110466355A (en) | 2019-11-19 |
| CN110466355B true CN110466355B (en) | 2021-10-12 |
Family
ID=68514022
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910807322.XA Active CN110466355B (en) | 2019-08-29 | 2019-08-29 | Intelligent high-voltage delay power-off control method for electric automobile and electric automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110466355B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114162212B (en) * | 2020-09-10 | 2023-06-09 | 长城汽车股份有限公司 | Automatic steering return method and automobile |
| CN112918253B (en) * | 2021-01-28 | 2022-12-30 | 浙江合众新能源汽车有限公司 | New forms of energy pure electric vehicles power-on and power-off control system |
| CN114347850A (en) * | 2021-05-20 | 2022-04-15 | 长城汽车股份有限公司 | Vehicle power-off control method, device, medium and equipment |
| CN113199961B (en) * | 2021-06-07 | 2022-09-20 | 东风汽车股份有限公司 | Delayed power-off method for battery management system of electric vehicle |
| CN113778056A (en) * | 2021-09-13 | 2021-12-10 | 海马汽车有限公司 | Automobile dormancy awakening method and device, automobile and storage medium |
| CN113858958B (en) * | 2021-10-29 | 2023-06-20 | 江西五十铃汽车有限公司 | New energy pure electric light truck power-on and power-off control method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104709091A (en) * | 2013-12-13 | 2015-06-17 | 北汽福田汽车股份有限公司 | Power-on method and power-off method of full electric vehicle |
| CN105774589A (en) * | 2016-03-15 | 2016-07-20 | 吉林大学 | Integrated type high-voltage power-on and power-off control method of electrocar |
| CN107662501A (en) * | 2016-07-28 | 2018-02-06 | 长城汽车股份有限公司 | Electric control method and pure electric automobile under pure electric automobile |
| CN107933315A (en) * | 2017-10-27 | 2018-04-20 | 陕西法士特齿轮有限责任公司 | A kind of upper and lower electric control method of pure electric automobile high pressure |
| CN108608865A (en) * | 2016-12-09 | 2018-10-02 | 上海大郡动力控制技术有限公司 | The method that vehicle control unit of electric vehicle controls high pressure power-on and power-off |
| CN108773270A (en) * | 2018-05-29 | 2018-11-09 | 吉利汽车研究院（宁波）有限公司 | A kind of lower method for electrically and device of battery management system |
| CN109318714A (en) * | 2017-07-26 | 2019-02-12 | 湖南中车时代电动汽车股份有限公司 | Electric automobile high-voltage distribution system power-on and power-off control method |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104608637B (en) * | 2014-12-08 | 2017-03-29 | 惠州市亿能电子有限公司 | A kind of electric automobile power-on and power-off control method |
| CN106696871B (en) * | 2015-11-18 | 2019-11-22 | 北京宝沃汽车有限公司 | High voltage system, control method and the electric car of electric car |
| CN108297693A (en) * | 2018-02-09 | 2018-07-20 | 广汽丰田汽车有限公司 | Electric vehicle and its high-voltage electricity on-off control method thereof, storage medium |
-
2019
- 2019-08-29 CN CN201910807322.XA patent/CN110466355B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104709091A (en) * | 2013-12-13 | 2015-06-17 | 北汽福田汽车股份有限公司 | Power-on method and power-off method of full electric vehicle |
| CN105774589A (en) * | 2016-03-15 | 2016-07-20 | 吉林大学 | Integrated type high-voltage power-on and power-off control method of electrocar |
| CN107662501A (en) * | 2016-07-28 | 2018-02-06 | 长城汽车股份有限公司 | Electric control method and pure electric automobile under pure electric automobile |
| CN108608865A (en) * | 2016-12-09 | 2018-10-02 | 上海大郡动力控制技术有限公司 | The method that vehicle control unit of electric vehicle controls high pressure power-on and power-off |
| CN109318714A (en) * | 2017-07-26 | 2019-02-12 | 湖南中车时代电动汽车股份有限公司 | Electric automobile high-voltage distribution system power-on and power-off control method |
| CN107933315A (en) * | 2017-10-27 | 2018-04-20 | 陕西法士特齿轮有限责任公司 | A kind of upper and lower electric control method of pure electric automobile high pressure |
| CN108773270A (en) * | 2018-05-29 | 2018-11-09 | 吉利汽车研究院（宁波）有限公司 | A kind of lower method for electrically and device of battery management system |
Non-Patent Citations (2)
| Title |
|---|
| 基于Simulink/Stateflow的纯电动汽车整车上下电策略;蔡敏超等;《系统仿真技术》;20181231;第30-38页 * |
| 电动汽车高压上下电控制电路及系统研究;李东艳等;《信息技术与信息化》;20160625(第06期);第80-82页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110466355A (en) | 2019-11-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110466355B (en) | Intelligent high-voltage delay power-off control method for electric automobile and electric automobile | |
| EP3982457A1 (en) | Safety monitoring method and system for vehicle, and device | |
| US9884557B2 (en) | Apparatus and method of preventing over-discharge of vehicle battery | |
| CN110803025B (en) | Low-voltage power supply management method and system, electric vehicle and storage medium | |
| CN107697003B (en) | Vehicle electrical system | |
| CN108263214B (en) | Energy control method and device for low-voltage storage battery of hybrid electric vehicle | |
| JP5334620B2 (en) | Charging apparatus and charging method | |
| US20160103188A1 (en) | Method for monitoring the state of a battery in a motor vehicle | |
| CN109523758B (en) | System and method for monitoring voltage of vehicle battery | |
| US20170115370A1 (en) | Apparatus and method of diagnosing current sensor of eco-friendly vehicle | |
| CN113147503B (en) | Power management method for electric vehicle | |
| CN111463873A (en) | Battery monitoring method, battery management system and battery management equipment | |
| US20220085621A1 (en) | Battery control device for homogenizing battery cells | |
| WO2017115628A1 (en) | Power management device and failure detection method | |
| WO2023160412A1 (en) | Vehicle-mounted direct-current to direct-current converter state identification method and apparatus, device, and medium | |
| CN108482167B (en) | Electric automobile control method and device and electric automobile | |
| CN113910910B (en) | Electric automobile low-voltage power supply supplementing method, device, equipment and storage medium | |
| CN113844335A (en) | Charging method of vehicle-mounted battery, vehicle and readable storage medium | |
| CN110837043A (en) | Method, control device and power grid | |
| CN113696748A (en) | Fuel cell power supply system and control method and control device thereof | |
| CN109661336B (en) | Method for adapting the charging strategy of a vehicle energy store according to the operating mode | |
| CN112793463B (en) | On-vehicle battery diagnosis method and on-vehicle battery diagnosis device | |
| JP7295915B2 (en) | vehicle power system | |
| CN117656916A (en) | Charging control method and device for new energy automobile, electronic equipment and storage medium | |
| CN117382561A (en) | Vehicle stopping maintenance method and vehicle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |