CN111619354A - Power-on and power-off control method for electric automobile - Google Patents
Power-on and power-off control method for electric automobile Download PDFInfo
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- CN111619354A CN111619354A CN202010501481.XA CN202010501481A CN111619354A CN 111619354 A CN111619354 A CN 111619354A CN 202010501481 A CN202010501481 A CN 202010501481A CN 111619354 A CN111619354 A CN 111619354A
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- vehicle
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
- B60H1/0065—Control members, e.g. levers or knobs
- B60H1/00657—Remote control devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L1/00—Supplying electric power to auxiliary equipment of vehicles
- B60L1/02—Supplying electric power to auxiliary equipment of vehicles to electric heating circuits
-
- 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
- B60L2210/00—Converter types
- B60L2210/10—DC to DC converters
Abstract
The invention provides a power-on and power-off control method for an electric automobile, which comprises the steps that a vehicle controller is in a standby state; the vehicle-mounted communication module receives a function request through a user terminal or a cloud server; the vehicle-mounted communication module wakes up the whole vehicle controller to be powered on and sends a function request to the whole vehicle controller; the vehicle control unit controls related high-low voltage electric equipment which completes the function request to be electrified and monitors the completion of the function request; after the function request is completed, the vehicle control unit feeds back to the user terminal or the cloud server through the vehicle-mounted communication module; if the vehicle-mounted communication module receives a further function request, repeating the steps S3-S5; and if the vehicle-mounted communication module does not receive a further function request, the vehicle control unit controls the power-on high-low voltage system to power off and restores to a standby state. The invention can further reduce energy consumption and high-low voltage power consumption system consumption, improve the endurance mileage of the electric automobile and improve user experience.
Description
Technical Field
The invention belongs to the technical field of electric automobiles, and particularly relates to a power-on and power-off control method for an electric automobile.
Background
At present, the technology of electric vehicles is still developing rapidly, and the technologies are developed from energy supply technologies such as hybrid power, pure electric, fuel cells and extended range, etc., to intelligent driving, internet of vehicles, cloud platform services, etc. In an electric vehicle, effective management of an electric energy system is achieved through a Vehicle Control Unit (VCU), wherein the use of electric energy also always avoids the control of power-on and power-off of a high-voltage system of the vehicle. The electric automobile comprises a power battery and battery management system, a high-voltage low-voltage direct-current conversion device, an air conditioner and heating PTC system, a central control system, an automobile body electronic system, a chassis electronic system and other large quantities of high-voltage and low-voltage parts, so that detailed strategies need to be formulated to ensure the reasonability and the safety of the power-on and power-off processes of the high-voltage and low-voltage parts. The conventional power-ON and power-OFF process is controlled by an ignition key, the basic control logic of the power-ON and power-OFF process is that the key is in an OFF gear position and is in a standby state, the key is in a low-voltage self-detection state from the OFF gear position to an ON gear position and displays READY after power-ON, the key is in a high-voltage detection state from the ON gear position to a START gear position and is powered ON at high voltage, and then the key enters a drivable state; if the key is changed from the START gear position to the ON gear position, the system detects the vehicle state and powers down the high voltage, then changes from the ON gear position to the OFF gear position, and powers down the system at the low voltage and enters a standby state.
The specification of chinese invention patent CN201710424010.1 discloses a power-ON control method for an electric vehicle, which can determine a target system of high voltage to be detected in the electric vehicle according to the current operating state of the electric vehicle when the electric vehicle is in a low-voltage power-ON state (i.e., the key is in the ON gear position), so as to control the target system to perform high-voltage power-ON.
The specification of chinese invention patent No. cn201910807322.x discloses an intelligent high-voltage time-delay power-down control method for an electric vehicle, which generates a low-voltage power-down command and a high-voltage power-down command after detecting a power-down signal (i.e., a key is in a START gear position), controls a whole vehicle to perform low-voltage power-down and START time-delay timing according to the low-voltage power-down command, judges whether the vehicle has a power-up signal again in the time-delay timing process, and ends the time-delay timing and controls the whole vehicle to perform high-voltage power-down according to the high-voltage power-down command if the vehicle does not have the power-.
However, the prior art does not relate to an intelligent control process of powering on, performing a function and powering OFF to complete a function requested by a user when the electric vehicle is in a standby state (i.e., the key is in the OFF gear position).
Disclosure of Invention
In view of the above prior art, the technical problem to be solved by the present invention is to provide an intelligent control method capable of powering on and powering off an electric vehicle according to a user request function when the electric vehicle is in a standby state.
In order to solve the technical problem, the invention provides a power-on and power-off control method for an electric vehicle, which comprises the following steps:
according to the received user function request, the vehicle control unit controls the relevant high-low voltage electric equipment to be powered on and monitors the completion of the function request;
after the function request is completed, the vehicle control unit feeds back to the user;
and if the user has no further function request, the vehicle control unit controls the relevant high-voltage and low-voltage electric equipment to be powered off.
Preferably, the controlling the vehicle controller to control the related high-voltage and low-voltage electric devices to be powered on and monitor the completion of the function request according to the received user function request further includes:
the vehicle controller is in a standby state;
the vehicle-mounted communication module receives a function request through a user terminal or a cloud server;
the vehicle-mounted communication module wakes up the vehicle control unit to be powered on and sends the function request to the vehicle control unit.
Preferably, if the user does not have a further function request, the vehicle control unit further includes after controlling the relevant high-low voltage electric equipment to power down: and the vehicle control unit is restored to the standby state.
Preferably, if the user does not have a further function request, the method further includes before the vehicle controller controls the relevant high-low voltage electric equipment to power down: and if a further function request of the user is received, executing the function request.
Preferably, the function request comprises a pre-air-conditioning function request, a battery automatic supplementary electric function request, a headlamp lighting function request, an anti-theft lock unlocking function request and a vehicle searching function request.
Compared with the prior art, the invention has the beneficial effects that: when the electric automobile is in a standby state, the intelligent control of the power supply and the power supply of the corresponding high-low voltage electric equipment is carried out according to the function request of the user terminal or the cloud server, so that the energy loss and the consumption of a high-low voltage electric system can be further reduced, the endurance mileage of the electric automobile is improved, and the user experience is improved.
Drawings
FIG. 1 is a logic diagram of an electric vehicle power-on and power-off control method according to the present invention.
Detailed Description
The invention will be further described with reference to the drawings and preferred embodiments.
The invention provides a power-on and power-off control method of an electric automobile, which can be executed based on a power-on and power-off control device on the existing electric automobile. For example, the power-on and power-off control device on the existing electric automobile comprises a vehicle-mounted communication module, a vehicle control unit, high-voltage and low-voltage electric equipment and the like, wherein the vehicle-mounted communication module can exchange data with a user terminal, a cloud server, a monitoring platform and the like; the vehicle control unit can be used for performing upper and lower current process management on high-voltage and low-voltage electric equipment and has the functions of torque management, energy management, fault diagnosis, management and the like; the high-low voltage electric equipment comprises a power battery and battery management system, a high-voltage low-voltage direct current conversion device, an air conditioner and heating system, a central control system, a vehicle body electronic system, a chassis electronic system and the like.
Although the control method is executed based on the power-on and power-off control device on the existing electric automobile, the control method is completely different from the power-on and power-off control method of the existing electric automobile. The power-on and power-off control method for the electric vehicle provided by the embodiment comprises the following control flows (as shown in fig. 1):
and S1, the vehicle control unit is in a standby state, namely the key is in the OFF gear position and the high-low voltage electric equipment on the electric vehicle except the monitoring warning system is in a power-OFF state.
And S2, the vehicle-mounted communication module receives the function request through the user terminal or the cloud server. The user terminal can be a remote controller, a smart phone APP and the like; the function requests can comprise battery recharging, air conditioning in advance, headlamp lighting, anti-theft lock unlocking, vehicle searching and the like.
And S3, the vehicle-mounted communication module wakes up the vehicle control unit to be powered on and sends the function request to the vehicle control unit.
And S4, the vehicle control unit controls the relevant high-low voltage electric equipment which completes the function request to be electrified and monitors the completion of the function request. The power-on process of the high-voltage and low-voltage electric equipment specifically comprises power-on after low-voltage self-detection, high-voltage pre-charging and high-voltage power-on after high-voltage detection. Moreover, the high-voltage and low-voltage electric equipment irrelevant to the function request does not participate in electrification, so that the energy consumption can be further reduced, the consumption of the high-voltage and low-voltage electric equipment is reduced, and the endurance mileage of the electric automobile is improved.
And S5, after the function request is completed, feeding back the vehicle controller to the user terminal or the cloud server through the vehicle-mounted communication module.
S6, if the vehicle-mounted communication module receives a further function request of the user terminal or the cloud server, repeating the steps S3-S5; if the vehicle-mounted communication module does not receive a further function request of the user terminal or the cloud server, the vehicle control unit controls the power-off of the overvoltage high-low voltage system in the step S4, and the vehicle control unit is enabled to be restored to a standby state and simultaneously fed back to the user terminal or the cloud server. The power-off process of the high-voltage and low-voltage power equipment comprises fault detection, high-voltage power-off, high-voltage residual power discharge and low-voltage power-off.
In order to better understand the present invention, two specific examples are provided below.
Embodiment one (pre-air conditioning function request):
in summer, the vehicle is exposed to the sun, and the temperature in the vehicle can reach 60 ℃. If the user directly gets on the vehicle, the window is opened for ventilation, and the air conditioner is started for cooling, so that a very uncomfortable process is caused. If the remote intelligent remote control air conditioner function is adopted, the riding comfort can be greatly improved. When the air conditioner is remotely and intelligently controlled, the power-on and power-off control processes of the relevant power-on and power-off control devices are as follows:
step 1, the whole vehicle controller is in a standby state;
step 2, the vehicle-mounted communication module receives a pre-air-conditioning function request through the user smart phone APP and requires to regulate the temperature in the vehicle to be below 30 ℃;
step 3, the vehicle-mounted communication module wakes up the whole vehicle controller to be powered on and sends a pre-air-conditioning function request to the whole vehicle controller;
step 4, controlling a battery management system, an air conditioner circulating system and an air conditioner high-voltage relay which are used for completing the air conditioner function request in advance to be electrified by the vehicle controller, and monitoring the temperature in the vehicle to be reduced to 30 ℃;
step 5, after the air-conditioning function request is completed in advance, the vehicle controller feeds back to the user through the vehicle-mounted communication module;
and 6, the user sends a ready function through the vehicle-mounted communication module, the vehicle controller executes the electrification of the low-voltage electric equipment of the key from an OFF gear to an ON gear, the fault detection of the high-voltage system is completed, and the display screen waits for the driving of the vehicle after displaying the ready.
Specific example two (automatic recharging of low-voltage battery):
if the vehicle is parked for a long time, the storage battery still consumes power continuously for supplying power to the vehicle monitoring and warning system, and if the low-voltage storage battery is exhausted, the storage battery is easy to damage, and the vehicle is in an unmonitored and warning state. Therefore, the storage battery needs to be recharged in time, and the power-on and power-off control process of the relevant power-on and power-off control device is as follows:
step 1, the whole vehicle controller is in a standby state;
step 2, the vehicle self-monitoring system detects that the 12V low-voltage storage battery is lower than the SOC lower limit of the complementary charging, and the storage battery is required to be automatically charged to a full-charge state;
step 3, the vehicle self-monitoring system wakes up the whole vehicle controller to be powered on and sends the voltage or the SOC of the low-voltage storage battery as a monitoring parameter to the whole vehicle controller;
step 4, the vehicle control unit controls a battery management system and a DC/DC which finish the automatic power supply function request of the storage battery to be electrified, and waits for the vehicle self-monitoring system to detect a 12V low-voltage storage battery full charge electric signal;
step 5, after the storage battery automatically supplements the electric function request, the vehicle control unit feeds back to the user through the vehicle-mounted communication module;
and 6, the vehicle control unit carries out fault diagnosis on a low-voltage storage battery recharging related system, controls the DC/DC high-voltage power-down and the battery management system to power down at a low voltage after the vehicle control unit is normal, and meanwhile, the vehicle control unit returns to a standby state.
The foregoing merely represents preferred embodiments of the invention, which are described in some detail and detail, and therefore should not be construed as limiting the scope of the invention. It should be noted that, for those skilled in the art, various changes, modifications and substitutions can be made without departing from the spirit of the present invention, and these are all within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (5)
1. An electric vehicle power-on and power-off control method is characterized by comprising the following steps:
according to the received user function request, the vehicle control unit controls the relevant high-low voltage electric equipment to be powered on and monitors the completion of the function request;
after the function request is completed, the vehicle control unit feeds back to the user;
and if the user has no further function request, the vehicle control unit controls the relevant high-voltage and low-voltage electric equipment to be powered off.
2. The method according to claim 1, wherein before the controlling the vehicle controller to power on the related high-voltage and low-voltage electric devices and monitor the completion of the function request according to the received user function request, the method further comprises:
the vehicle controller is in a standby state;
the vehicle-mounted communication module receives a function request through a user terminal or a cloud server;
the vehicle-mounted communication module wakes up the vehicle control unit to be powered on and sends the function request to the vehicle control unit.
3. The method according to claim 2, wherein if the user has no further function request, the controlling the vehicle controller to power off the relevant high-voltage and low-voltage electric devices further comprises: and the vehicle control unit is restored to the standby state.
4. The method according to claim 1, wherein before the vehicle controller controls the relevant high-voltage and low-voltage electric equipment to power down if the user has no further function request, the method further comprises: and if a further function request of the user is received, executing the function request.
5. The electric vehicle power on and power off control method according to any one of claims 1 to 4, characterized in that: the function requests comprise a pre-air-conditioning function request, a battery automatic supplementary electric function request, a headlamp lighting function request, an anti-theft lock opening function request and a vehicle searching function request.
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| CN202010501481.XA CN111619354A (en) | 2020-06-04 | 2020-06-04 | Power-on and power-off control method for electric automobile |
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| CN202010501481.XA CN111619354A (en) | 2020-06-04 | 2020-06-04 | Power-on and power-off control method for electric automobile |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112693361A (en) * | 2020-12-28 | 2021-04-23 | 潍柴动力股份有限公司 | Battery protection system and method |
| CN112849058A (en) * | 2021-03-03 | 2021-05-28 | 三一重机有限公司 | Control method of engineering vehicle, electronic equipment and engineering vehicle |
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