CN113212329B - Vehicle electric energy control method, electric energy controller and electric energy control system - Google Patents
Vehicle electric energy control method, electric energy controller and electric energy control system Download PDFInfo
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- CN113212329B CN113212329B CN202010071440.1A CN202010071440A CN113212329B CN 113212329 B CN113212329 B CN 113212329B CN 202010071440 A CN202010071440 A CN 202010071440A CN 113212329 B CN113212329 B CN 113212329B
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- 230000032683 aging Effects 0.000 abstract description 3
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- 238000004378 air conditioning Methods 0.000 description 2
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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
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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
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Abstract
The invention discloses a vehicle electric energy control method, an electric energy controller and an electric energy control system. According to the invention, the power supply of the vehicle load is cut off according to the storage battery information and the vehicle power load information, so that abnormal current consumption of the vehicle is eliminated from the source, the electric quantity of the storage battery after the vehicle is separated is monitored, the consumption of the static current of the whole vehicle is reduced to the greatest extent, and the electric quantity of the storage battery is ensured to meet the requirement of starting the subsequent vehicle. Meanwhile, the vehicle load power supply is directly cut off, the discharging condition of the storage battery is reduced, and the aging speed of the storage battery is reduced.
Description
Technical Field
The invention relates to the technical field of automobile control, in particular to a vehicle electric energy control method, an electric energy controller and an electric energy control system.
Background
During use of the vehicle, a module on the vehicle, for example, does not always properly enter a "sleep mode". After the vehicle is stationary, the vehicle bus is generally in a sleep state, and the quiescent current of the whole vehicle is about 20 milliamperes at the moment, and the generated quiescent current is insufficient to cause the power shortage of the storage battery; however, as the load of the vehicle is more, the vehicle is easy to be frequently awakened by various loads, particularly networking loads, if the vehicle is abnormally awakened, the quiescent current can reach several amperes, and the vehicle is seriously deficient in electricity; the battery also has a certain self-discharge current due to the influence of electrolyte impurities of the battery, and the self-discharge is a big factor influencing the power consumption of the whole vehicle, and the battery deficiency can cause warranty claim cost for replacing the battery, and simultaneously customer complaints are generated.
At present, the electric energy management technology is applied to partial vehicle types to solve the problem of power shortage of the vehicle battery, the load of the vehicle is controlled under various application modes of the vehicle, the load control is mainly performed in the use process of the vehicle, the load management after parking is mainly performed by monitoring the current state and recording abnormality, and the load cannot be actively controlled. However, such control methods have defects that the vehicle load in various modes cannot be effectively controlled, for example, after the vehicle is stopped, only the current condition of the vehicle is monitored and stored, the vehicle load is not effectively controlled, and a user only can know that the vehicle has abnormal quiescent current through inquiry after the power shortage occurs, so that the power shortage of the vehicle cannot be prevented.
Therefore, along with the acceleration of the intelligentization and networking of the vehicle, the electricity load on the vehicle is gradually increased, the electricity consumption scene is expanded from the electricity consumption when the single automobile starts to run to the scene of still having electricity demand after flameout power down or fortification, so that the electricity consumption problem of the vehicle exists in a large quantity, and how to reduce the electricity consumption problem caused by the occurrence of the different modes of the vehicle is a problem which needs to be solved urgently by the person in the technical field.
Disclosure of Invention
The invention provides a low-voltage energy management method and a low-voltage energy management system, which are used for solving the problem of power deficiency caused by abnormal power consumption of a vehicle under idle working conditions, flameout working conditions and power-down working conditions of the vehicle.
A vehicle electric energy control method, comprising:
determining a vehicle state of the vehicle;
acquiring storage battery information, wherein the storage battery information comprises storage battery electric quantity;
And when the vehicle state is in an OFF state and in a vehicle fortification state, sending a power supply cut-OFF instruction to the intelligent switch according to the electric quantity of the storage battery, so that the intelligent switch cuts OFF the power supply of the related vehicle load according to the power supply cut-OFF instruction.
Further, the sending a power-off instruction to the intelligent switch according to the electric quantity of the storage battery includes:
When the electric quantity of the storage battery is lower than a first preset threshold value, starting timing, and when the timing is up to T 1, sending a partial power supply cut-off instruction to the intelligent switch so that the intelligent switch cuts off the power supply of a first vehicle load according to the partial power supply cut-off instruction, wherein the first vehicle load is a partial load in the vehicle loads;
And when the electric quantity of the storage battery is lower than a second preset threshold value, starting timing, and when the timing is up to T 2, sending all power-off instructions to the intelligent switch so that the intelligent switch cuts off the power supply of a second vehicle load according to all the power-off instructions, wherein the second vehicle load is other loads except for the vehicle fortification necessary load in the vehicle load.
Further, the battery information further includes a battery current, and when the vehicle state is in the OFF state and in the vehicle armed state, the method further includes:
When the electric quantity of the storage battery is lower than a third preset threshold value and the electric current of the storage battery is higher than a set abnormal threshold value, starting timing, and when the timing is up to T 3, sending all power-off instructions to the intelligent switch so that the intelligent switch cuts off the power supply of a second vehicle load according to all the power-off instructions, wherein the second vehicle load is other loads except for the vehicle fortification necessary load in the vehicle loads.
Further, after the power-off instruction is sent to the intelligent switch according to the electric quantity of the storage battery, the method further comprises:
And when the vehicle state is not in the vehicle fortification state, sending a power restoration instruction to the intelligent switch so that the intelligent switch restores the power supply of the related vehicle load according to the power restoration instruction.
Further, when the vehicle state is in the OFF state and in the vehicle armed state, the method further comprises:
When the electric quantity of the storage battery is lower than a fourth preset threshold value, starting timing, and when the timing is up to T 4, sending an external wake-up source disabling instruction to a vehicle bus so that the vehicle load on the vehicle bus does not respond to the wake-up of the external wake-up source according to the external wake-up source disabling instruction;
And when the vehicle state is not in the vehicle fortification state, sending a disable canceling instruction to the vehicle bus so as to enable the vehicle load on the vehicle bus to resume the wake-up of the external wake-up source to the vehicle load according to the disable canceling instruction.
Further, when the vehicle state is in an engine idle state, the method further comprises:
When the current of the storage battery is positive and the electric quantity of the storage battery is lower than a fifth preset threshold value, a step-and-step lifting instruction is sent to an engine control unit, so that the engine control unit can lift the idle speed of the engine according to the step-and-step lifting instruction, and a load limiting instruction is sent to a comfort load, so that the comfort load reduces power according to the load limiting instruction, and the comfort load comprises a seat heating device.
Further, after the engine control unit increases the idle speed of the engine according to the step-up command, the method further includes:
And when the current of the storage battery is positive and the electric quantity of the storage battery is higher than a sixth preset threshold, sending a step-down instruction to the engine control unit so that the engine control unit restores the idle speed of the engine according to the step-down instruction, and sending a load restoration instruction to a comfort load so that the comfort load restores power according to the load restoration instruction, wherein the sixth preset threshold is the sum of the fifth preset threshold and a first preset window, and the first preset window is related to the electric quantity of the storage battery.
Further, when the vehicle state is in a flameout state and not in the OFF state, the method further includes:
When the electric quantity of the storage battery is lower than a seventh preset threshold value, a low electric quantity prompt is sent to remind a user of the electric quantity of the storage battery, and a load power reduction instruction is sent to the comfort load and the entertainment load so that the comfort load and the entertainment load reduce power according to the load power reduction instruction;
And when the electric quantity of the storage battery is higher than an eighth preset threshold value, sending a load power recovery instruction to the comfort load and the entertainment load so that the comfort load and the entertainment load recover power according to the load power recovery instruction, wherein the eighth preset threshold value is the sum of the seventh preset threshold value and a second preset window, and the second preset window is related to the electric quantity of the storage battery.
A power controller, comprising:
A determination module for determining a vehicle state of a vehicle;
the acquisition module is used for acquiring storage battery information, wherein the storage battery information comprises storage battery electric quantity;
And the control module is used for sending a power supply cut-OFF instruction to the intelligent switch according to the electric quantity of the storage battery and the electric load information of the vehicle when the vehicle state is in an OFF state and in a vehicle fortification state, so that the intelligent switch cuts OFF the power supply of the related vehicle load according to the power supply cut-OFF instruction.
The electric energy control system comprises an intelligent switch and the electric energy controller, wherein the electric energy controller is connected with the intelligent switch.
An electric energy controller comprising a memory, a processor and a computer program stored in the memory and executable on the processor, the processor implementing the steps of the vehicle electric energy control method described above when executing the computer program.
A readable storage medium storing a computer program which, when executed by a processor, implements the steps of the vehicle electrical energy control method described above.
According to the vehicle electric energy control method, the electric energy controller, the electric energy control system and the readable storage medium, the storage battery information is obtained through determining the vehicle state of the vehicle, and when the vehicle state of the vehicle is in the OFF state and in the vehicle fortification state, the power supply cutoff instruction is sent according to the storage battery electric quantity and the vehicle electric load information, so that the intelligent switch cuts OFF the power supply of the vehicle load according to the power supply cutoff instruction. When the vehicle enters the fortification state, the power supply of the vehicle load is cut off according to the storage battery information and the vehicle electricity load information, so that the generation of abnormal current of the vehicle is prevented from the source, the state of the electric quantity of the storage battery after the vehicle is separated is monitored, the consumption of the static current of the whole vehicle is reduced to the greatest extent, and the electric quantity of the storage battery is ensured to meet the requirement of the follow-up vehicle starting. Meanwhile, the vehicle load power supply is directly cut off, the discharging service condition of the storage battery is reduced, the rapid aging speed of the storage battery is reduced, and the after-sale claims, maintenance cost and user complaints of the storage battery can be reduced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the description of the embodiments of the present invention will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a vehicle electrical energy control system according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a vehicle electrical energy control system according to an embodiment of the present invention;
FIG. 3 is a flow chart of a method for controlling vehicle power according to an embodiment of the invention;
FIG. 4 is a schematic diagram of a flow chart of a vehicle power control method according to an embodiment of the invention;
FIG. 5 is a flow chart illustrating an idle state in a vehicle power control method according to an embodiment of the present invention;
FIG. 6 is a flow chart illustrating another state of the vehicle power control method according to an embodiment of the present invention;
FIG. 7 is a schematic diagram of a vehicle power controller according to an embodiment of the invention;
fig. 8 is a schematic diagram of another configuration of a power controller according to an embodiment of the invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The method for controlling electric energy of a vehicle provided by the embodiment of the invention can be applied to an electric energy control system provided by the embodiment of the invention as shown in fig. 1, wherein the electric energy control system comprises an electric energy controller 101, a vehicle load 102 and an intelligent switch 103, and the electric energy controller 101, the vehicle load 102 and the intelligent switch 103 are connected and communicated through a vehicle bus.
In another embodiment, the electric energy control system further comprises a storage battery sensor 104, a storage battery 105, an engine control unit 106 and a generator 107, and as shown in fig. 2, the modules/devices of the electric energy control system are connected and communicated through a bus of the vehicle. The power control system communicates with clients through a network, which may be, but is not limited to, various personal computers, notebook computers, smart phones, tablet computers, and portable wearable devices.
In one embodiment, as shown in fig. 3, a vehicle electric energy control method is provided, and the method is applied to the electric energy control system for example, and includes the following steps:
S10: a vehicle state of the vehicle is determined.
In this embodiment, the vehicle is divided into different vehicle states according to the running state of the power system and the key gear of the vehicle, for example, the vehicle is in a fortification state, an idling state, a flameout state, etc., so that in each vehicle state, different vehicle electric energy control methods are performed according to different electric quantities of the storage battery, so as to ensure the starting performance of the vehicle.
S20: and acquiring storage battery information, wherein the storage battery information comprises the electric quantity of the storage battery.
The method comprises the steps of measuring storage battery information on a vehicle in real time through a storage battery sensor, and uploading the storage battery information to an electric energy controller through an LIN bus, wherein the storage battery information comprises storage battery electric quantity.
S30: when the vehicle state is in an OFF state and in a vehicle fortification state, a power supply cut-OFF instruction is sent to the intelligent switch according to the electric quantity of the storage battery and the information of the electric load of the vehicle, so that the intelligent switch cuts OFF the power supply of the related vehicle load according to the power supply cut-OFF instruction.
When the vehicle is in a running state, the generator and the storage battery jointly provide electric energy, and the electric energy control system does not control the electric energy of the vehicle at the moment. However, when the vehicle state is in the OFF state and in the vehicle fortification state, the vehicle electric energy is only supplied by the storage battery, and the vehicle load can generate static current to make the vehicle deficient in power because the power supply of the vehicle load is not cut OFF before, and the electric quantity of the storage battery is always reduced along with the consumption of the vehicle electric energy by the vehicle load.
Therefore, in order to prevent the vehicle from continuously consuming power, the storage battery is ensured to have enough electric quantity so that the vehicle can be started later, when the electric quantity of the storage battery is found to be reduced to a certain threshold value through the storage battery sensor, the electric energy controller needs to send a cutting-off instruction to the intelligent switch according to the condition of the power-consuming vehicle load on the vehicle, and after the intelligent switch receives the instruction, the power supply of the related vehicle load is cut off according to the instruction.
After the fortification state of the vehicle is released, the computer controller sends a power restoration instruction to the intelligent switch so that the intelligent switch restores the power supply of the vehicle load with the power cut off according to the power restoration instruction.
In another embodiment, the battery information further includes an electric quantity precision, and the electric energy controller performs the vehicle electric energy control method according to the vehicle state, the electric quantity of the battery and the vehicle load condition that the vehicle is still consuming electricity only when the electric quantity of the battery is within a range allowed by the electric quantity precision, so as to ensure the starting performance of the vehicle, which is not described herein.
In this embodiment, the battery information is obtained by determining the vehicle state of the vehicle, and when the vehicle state of the vehicle is in the OFF state and in the vehicle fortification state, a power supply cutoff instruction is sent according to the battery power and the vehicle power load information, so that the intelligent switch cuts OFF the power supply of the vehicle load according to the power supply cutoff instruction. When the vehicle enters the fortification state, the power supply of the vehicle load is cut off according to the storage battery information and the vehicle electricity load information, so that the generation of the vehicle quiescent current is prevented from the source, the state of the storage battery after leaving the vehicle is monitored, the consumption of the whole vehicle quiescent current is reduced to the greatest extent, and the storage battery power is ensured to meet the requirement of the follow-up vehicle starting. Meanwhile, the vehicle load power supply is directly cut off, the discharging condition of the storage battery is reduced, the aging speed of the storage battery is reduced, and after-sale claims, maintenance cost and user complaints of the storage battery are reduced.
In one embodiment, as shown in fig. 4, in step S30, a power cut-off command is sent to the intelligent switch according to the electric quantity of the storage battery and the electric load information of the vehicle, and the method specifically includes the following steps:
S31: when the electric quantity of the storage battery is lower than a first preset threshold value, starting timing, and when the timing reaches T 1, sending a partial power supply cut-off instruction to the intelligent switch, so that the intelligent switch cuts off the power supply of a first vehicle load according to the partial power supply cut-off instruction, wherein the first vehicle load is a partial load in the vehicle loads.
When the electric quantity of the storage battery is detected to be lower than a first preset threshold value through the storage battery sensor, a timing module on the electric energy controller starts timing, and when the timing reaches T 1, the electric energy controller sends a partial power supply cut-off instruction to the intelligent switch, so that the intelligent switch can cut off the vehicle load of the partial power supply on the vehicle according to the partial power supply cut-off instruction. For example, when the battery power is lower than 50%, the timing module performs timing and counts for 2 minutes, the electric energy controller sends an instruction for cutting off the power supply of part of the vehicle loads to the intelligent switch, and the intelligent switch immediately cuts off the power supply of the seat heating device and the seat ventilation device according to the instruction after receiving the instruction.
In another embodiment, the vehicle load with the power cut-off part further includes a seat adjusting device, a seat massaging device, etc., and the vehicle load with the power cut-off part further may be an entertainment system device on the vehicle, such as an audio device, etc., without limitation.
S32: when the electric quantity of the storage battery is lower than a second preset threshold value, starting timing, and when the timing reaches T 2, sending all power-off instructions to the intelligent switch, so that the intelligent switch cuts off the power supply of a second vehicle load according to all power-off instructions, wherein the second vehicle load is other loads except for the vehicle fortifying essential load in the vehicle loads.
The preset threshold of the battery power is the remaining power of the battery, and is generally represented by the percentage of the remaining power to the battery capacity, wherein the second preset threshold is smaller than the first threshold.
When the electric quantity of the storage battery is lower than a first preset threshold value, a timing module on the electric energy controller starts timing, and when the timing reaches T 3, the electric energy controller sends all power supply cut-off instructions to the intelligent switch, and after the intelligent switch receives all power supply cut-off instructions, the intelligent switch cuts off the vehicle load of all remaining power supplies according to the instructions under the condition that the vehicle is protected from necessary loads. For example, when the electric quantity of the storage battery is lower than 45%, the timing module counts time and counts 3 minutes, and then the electric energy controller sends all power supply cut-off instructions to the intelligent switch, and when the four-door two-cover lock of the vehicle is reserved, the intelligent switch cuts off the power supply of all the remaining vehicle loads except the four-door two-cover lock, and all the remaining vehicle loads are all loads except the four-door two-cover lock, including an air conditioner and a vehicle-mounted computer.
After the power supply of all vehicles is cut off, the fortification state of the vehicles can be released only by a mechanical key. After the fortification state of the vehicle is released, the computer controller sends a power restoration instruction to the intelligent switch so that the intelligent switch restores the power supply of the vehicle load with the power cut off according to the power restoration instruction.
In another embodiment, the first preset threshold, the second preset threshold, T 1 and T 2 may be set to other values, which are not described herein.
In this embodiment, according to battery power and vehicle electricity load information, the condition of cutting off of vehicle load power has further been thinned, according to the remaining condition of battery power, send partial vehicle load power to cut off instruction and whole vehicle load power to the intelligent switch respectively for under the condition that makes two covers of vehicle four doors lock, cut off the vehicle load power in grades, under the circumstances of guaranteeing vehicle safety, reduced the vehicle and run out the power risk, guaranteed that the battery power can satisfy the demand of follow-up vehicle start.
In an embodiment, the battery information further includes a battery current, and when the vehicle state is in the OFF state and in the vehicle fortification state, the vehicle electric energy control method further specifically includes the steps of:
S401: when the electric quantity of the storage battery is lower than a third preset threshold value and the electric current of the storage battery is higher than a set abnormal threshold value, starting timing, and when the timing reaches T 3, sending all power-off instructions to the intelligent switch, so that the intelligent switch cuts off the power supply of a second vehicle load according to all power-off instructions, wherein the second vehicle load is other loads except for the vehicle fortification necessary load in the vehicle loads.
When the storage battery sensor detects that the storage battery current is higher than a set abnormal current threshold value and the storage battery electric quantity is lower than a third preset threshold value, a timing module on the electric energy controller starts timing, and when the timing reaches T 3, the electric energy controller sends all power supply cut-off instructions to the intelligent switch, and the intelligent switch cuts off the vehicle load of all the residual power supplies according to the instructions under the condition that the vehicle is protected from necessary loads after receiving all the power supply cut-off instructions.
For example, the abnormal threshold is set to 300 milliamperes, the third preset threshold is set to 55% of the total electric quantity of the storage battery, when some vehicle loads on the vehicle are awakened abnormally, the static current of the vehicle can suddenly rise, when the current of the storage battery is higher than 300 milliamperes, if the electric quantity of the storage battery is lower than 55%, the timing module counts time and counts time for 2 minutes, the electric energy controller sends all power supply cut-off instructions to the intelligent switch, and the intelligent switch cuts off the power supply of all the residual vehicle loads including all loads of an air conditioner and a vehicle-mounted computer under the condition that the basic functions of the vehicle are reserved after the all power supply cut-off instructions are received.
The method and the device for setting the abnormal threshold value are not limited, for example, the abnormal threshold value can be set smaller if the function similar to the inspection function of a storage battery of a new energy vehicle is provided, and the abnormal threshold value can be set larger if the function similar to the inspection function of the storage battery of the new energy vehicle is provided.
In another embodiment, the abnormality threshold, the third preset threshold and T 3 may also be set to other values, which are not described herein.
After the power supply of the related vehicle is cut off, the fortification state of the vehicle can be released only by a mechanical key. When the fortification state of the vehicle is relieved through the mechanical key, the electric energy controller sends a power restoration instruction to the intelligent switch, so that the intelligent switch restores the power supply of the vehicle load with the power cut off according to the power restoration instruction.
In this embodiment, a set abnormal threshold is added, when some vehicle loads are awakened abnormally, battery information of the battery is monitored in real time through the battery sensor, when the battery current is higher than the set abnormal threshold and the battery power is lower than a certain threshold, after a period of time, the remaining vehicle loads of all the power supplies are directly cut off under the condition that the vehicle is protected from necessary loads (such as locks of four doors and two covers), and under the condition that the vehicle safety is ensured, the vehicle power shortage risk caused by the abnormal awakening of the vehicle loads is reduced, and the battery power is ensured to meet the requirement of starting the subsequent vehicle.
In one embodiment, when the vehicle state is in the OFF state and in the vehicle fortification state, the vehicle electric energy control method further specifically includes the steps of:
S501: and when the electric quantity of the storage battery is lower than a fourth preset threshold value, starting timing, and when the timing reaches T 4, sending an external wake-up source disabling instruction to the vehicle bus so that the vehicle load on the vehicle bus does not respond to the wake-up of the external wake-up source according to the external wake-up source disabling instruction.
Meanwhile, when the vehicle enters a fortification state, the vehicle is only powered by a storage battery, the more the vehicle load is, the more the generated static current is, and because some vehicle loads on the vehicle are connected with an external network through a vehicle-mounted computer (ECU), in the networking state, the vehicle loads are easy to wake up by the network, and the vehicle static current is increased after the vehicle is abnormally wake up. Therefore, in order to reduce the vehicle power consumption, when the battery power is detected to be lower than the fourth preset threshold value through the battery sensor, the timing module on the electric energy controller starts timing, and when the timing is up to T 4, the electric energy controller sends an external wake-up source disabling instruction to the vehicle bus, and after the related vehicle load on the vehicle bus receives the external wake-up source disabling instruction, the wake-up of the external wake-up source of the ECU is not responded according to the instruction.
For example, upon receiving an external wake source disable instruction, the keyless control device (PEPS) no longer responds to the wake of the door handle, the body control device (BCM) no longer responds to the wake of the brake switch, the seat system device no longer responds to the action of the seat adjustment switch, etc., while the ECU no longer wakes up the network.
S502: and when the vehicle state is not in the vehicle fortification state, sending a disable canceling instruction to the vehicle bus so as to enable the vehicle load on the vehicle bus to resume the wakeup of the external wakeup source to the corresponding vehicle load according to the disable canceling instruction.
When the vehicle cancels the fortification state, the electric energy controller sends a disable canceling instruction to the vehicle bus, and after receiving the disable canceling instruction, the vehicle load on the vehicle bus resumes the wake-up of the vehicle load by a wake-up source outside the vehicle-mounted computer (ECU) according to the instruction.
Specifically, when the cancel disable instruction is received, the external wake-up source is restored to wake up the corresponding vehicle load, for example, a keyless control device (PEPS) is responsive to the wake up of the door handle, a body control device (BCM) is responsive to the wake up of the brake switch, a seat system device is responsive to the action of the seat adjusting switch, and the like, and the ECU can wake up the network.
In this embodiment, when the battery power is low to a certain extent, the consumption of the battery power is reduced by disabling the external wake-up source of the related load, the risk of vehicle power deficiency increased due to abnormal vehicle dormancy caused by the external wake-up source and external network wake-up of the vehicle load is reduced, and the battery power is ensured to meet the requirement of the subsequent vehicle start.
In an embodiment, the battery information further includes a battery current, and when the vehicle state is in the engine idle state, as shown in fig. 5, the vehicle electric energy control method further specifically includes the steps of:
S41: when the current of the storage battery is positive and the electric quantity of the storage battery is lower than a fifth preset threshold value, a step-and-step lifting instruction is sent to the engine control unit, so that the engine control unit can lift the idle speed of the engine according to the step-and-step lifting instruction, and a load limiting instruction is sent to the comfort load, so that the comfort load reduces power according to the load limiting instruction.
When the vehicle is in an idle state, the vehicle speed is 0, but the engine of the vehicle is still running, and the vehicle is jointly supplied with electric energy by the generator and the storage battery. When the output power of the generator is larger than the power consumption of the vehicle load, namely, the current flowing through the storage battery is negative, the storage battery is in a charging state, and the electric energy controller determines a comfortable load with the power supply turned on according to the vehicle load information on the vehicle bus. The comfort type load is a vehicle load which is not perceived to be obvious by a user after load change and at least comprises a seat heating device.
When the vehicle is in an idle state, the rotation speed of the engine is low, for example, the idle rotation speed is 700 revolutions per minute, the rotation speed of the generator is also low, the electric energy provided by the generator cannot meet the consumption of the load on the vehicle, and at the moment, the storage battery also provides the electric energy for the vehicle, and the current of the storage battery is positive. In order to make the electric energy provided by the engine meet the load consumption, the rotating speed of the engine needs to be increased to increase the rotating speed of the generator to increase the electric energy output, but if the engine is increased to a large rotating speed at a time, the vehicle can shake to influence the use experience of a user, so that the idle rotating speed of the generator needs to be stepped up in a grading manner.
When the current of the storage battery is monitored to be positive in real time through the storage battery sensor, and the electric quantity of the storage battery is lower than a certain threshold value, the electric energy controller sends a grading stepping instruction to the engine control unit, and the engine control unit steps and increases the idle speed according to the grading stepping instruction after receiving the instruction. For example, the fifth preset threshold is 60% of the electric quantity of the storage battery, when the electric quantity of the storage battery is lower than 60% and the electric quantity of the storage battery is positive, the engine control unit increases the idle speed of the engine by 50 rpm according to the change condition of the electric quantity.
The electric energy controller sends a load limiting instruction to a comfortable load, such as a seat heating device, when the load limiting instruction is received by the seat heating device on the vehicle, and reduces the self power to reduce the consumption of electric energy.
S42: and when the current of the storage battery is positive and the electric quantity of the storage battery is higher than a sixth preset threshold, sending a step-down instruction to the engine control unit so that the engine control unit restores the idle speed of the engine according to the step-down instruction, and sending a load restoration instruction to the comfort load so that the comfort load restores power according to the load restoration instruction, wherein the sixth preset threshold is the sum of the fifth preset threshold and a first preset window, and the first preset window is related to the electric quantity of the storage battery.
When the current of the storage battery is monitored to be positive in real time through the storage battery sensor, and the electric quantity of the storage battery is higher than a sixth preset threshold, the sixth preset threshold is the sum of the fifth preset threshold and a first preset window, wherein the first preset window is a value related to the electric quantity of the storage battery, the electric energy controller sends a load recovery instruction to the engine control unit, and the engine control unit steps down the idle speed of the engine according to the instruction after receiving the instruction so as to recover the original idle speed of the engine.
While the idle speed of the engine is gradually reduced in steps, the electric energy controller sends a load restoration instruction to a comfortable load, such as a seat heating device, and the seat heating device on the vehicle restores power after receiving the load restoration instruction.
In this embodiment, the purpose of the first preset window is to prevent frequent actions of the vehicle function, such as frequent opening/closing of the function of increasing the idle speed, for example, if the fifth preset threshold is 60% of the battery power, when the battery power is lower than 60%, the idle speed of the engine is increased, after 50 seconds, the battery is restored to 60%, the idle speed is increased and stopped, after 60 seconds, the battery power is reduced to below 60%, and the idle speed of the engine is increased again, which results in frequent opening and closing of the vehicle function. The first preset window is arranged, so that frequent actions of the vehicle-mounted function can be properly reduced, for example, when the first preset window is 5%, when the electric quantity of the storage battery is lower than 60%, the idle speed lifting function and the comfort load power reducing function of the vehicle are started, and only when the electric quantity of the storage battery is recovered to be more than 65%, all the functions can be closed, so that the frequent actions of the vehicle are properly reduced.
In another implementation, the fifth preset threshold and the first preset window may also be other preset values, for example, the fifth preset threshold is 55% of the electric quantity of the storage battery and the first preset window is 3% of the electric quantity of the storage battery, and the comfort load may also be other loads, for example, a seat adjusting device, a seat massaging device, a seat ventilation device and an air conditioning device, which are not described herein again.
In this embodiment, when the vehicle is idling, when the generator energy supply can't satisfy vehicle load consumption and battery electric quantity is low to certain degree, through carrying out step-by-step promotion to the idle speed of vehicle engine, improve generator electric energy output, make the electric energy output of whole car satisfy load consumption, avoided the shake of vehicle because of idle speed promotes too fast too big and lead to, simultaneously, still through the mode that reduces the indistinct comfortable class load power of user perception, reduce electric energy consumption under the circumstances that does not influence vehicle load and use, improved user's use experience. In addition, the first preset window is further arranged, and vehicle loss caused by frequent actions of vehicle functions is reduced.
In one embodiment, when the vehicle state is in the flameout state and not in the OFF state, as shown in fig. 6, the vehicle power control method further specifically includes the steps of:
S51: and when the electric quantity of the storage battery is lower than a seventh preset threshold value, a low electric quantity prompt is sent to remind a user of the electric quantity of the storage battery, and a load power reducing instruction is sent to the comfort load and the entertainment load, so that the comfort load and the entertainment load reduce power according to the load power reducing instruction.
When the battery sensor monitors that the battery power is lower than a seventh preset threshold in real time, the electric energy controller sends a low power prompt, such as a prompt sent by an electric energy meter, so as to remind a user of the battery power. And when the electric quantity of the storage battery is lower than a seventh preset threshold value, the electric energy controller also sends a load power reducing instruction to the comfort load and the entertainment load so that the comfort load and the entertainment load reduce power according to the load power reducing instruction. For example, the seventh preset threshold is 50% of the battery level, and when the battery level is lower than 50%, the electric power controller sends a load power lowering command to the seat heating device and the audio device, and the seat heating device and the audio device lower power after receiving the command.
In other embodiments, the comfort load further includes a seat adjusting device, a seat massaging device, a seat ventilation device, an air conditioning device, and the like, and the entertainment load further includes a picture playing device and the like, which are not described herein.
S52: and when the electric quantity of the storage battery is higher than an eighth preset threshold value, sending a load power recovery instruction to reduce the comfort type load and the entertainment type load so as to enable the comfort type load and the entertainment type load to recover power according to the load power recovery instruction, wherein the eighth preset threshold value is the sum of a seventh preset threshold value and a second preset window, and the second preset window is related to the electric quantity of the storage battery.
When the electric quantity of the storage battery is monitored to be higher than an eighth preset threshold value in real time through the storage battery sensor, the electric energy controller sends a load power recovery instruction to the comfort load and the entertainment load, so that the comfort load and the entertainment load recover power according to the load power recovery instruction. The eighth preset threshold is the sum of the seventh preset threshold and a second preset window, the second preset window is a value related to the electric quantity of the storage battery, for example, the second preset window is 5% of the electric quantity of the storage battery, and when the electric quantity of the storage battery is higher than 55%, the electric energy controller sends a load power recovery instruction to the seat heating device and the sound device, and the seat heating device and the sound device recover power after receiving the instruction.
In this example, the second preset window is provided for the purpose of preventing frequent actions of the vehicle function. For example, the seventh preset threshold is 50% of the battery power, when the battery power is lower than 50%, a low power alert is sent and the power of the comfort load and the entertainment load is reduced, after 10 seconds, the vehicle starts, the battery is immediately restored to 50%, and the power of the comfort load and the entertainment load is restored, which causes the function to be performed too quickly. The second preset window is set to properly avoid frequent actions of vehicle functions, for example, when the second preset window is 5% of the electric quantity of the storage battery, when the electric quantity of the storage battery is lower than 55%, a low electric quantity prompt is sent out, the power of the comfort load and the entertainment load is reduced, and only when the electric quantity of the storage battery is recovered to more than 55%, the power of the comfort load and the entertainment load is recovered.
The second preset window is the same as the first preset window, or may be different from the first preset window, for example, the second preset window may be 3% of the electric quantity of the storage battery.
In this embodiment, when the vehicle state is in the flameout state and is not in the OFF state, when the battery power is low to a certain extent, the user can immediately learn the battery power by reminding the user with low power and reducing the power of the comfort load and the entertainment load, and meanwhile, the consumption of the battery power by the vehicle load which is not obvious in user perception is reduced, so that the battery power is ensured to meet the requirement of the subsequent starting of the vehicle. In addition, the second preset window is further arranged, and vehicle loss caused by frequent actions of vehicle functions is reduced.
In another embodiment, when the vehicle is in an OFF state and the vehicle is not armed, the power controller sends a low battery reminder to enable the user to start the vehicle when the battery level is monitored by the battery sensor to be below a ninth preset threshold. For example, when the battery power is lower than 55%, the electric energy controller uploads the low power reminding information to the vehicle-mounted T-BOX, and sends the reminding information to the user through the background of the vehicle-mounted T-BOX to remind the user that the battery power is low for loving the vehicle, please start the vehicle as soon as possible-! In one embodiment, the alert that the vehicle is to be started is uploaded only once during an ignition cycle.
In this embodiment, when the vehicle is in an OFF state and the vehicle is not armed, when the battery power is low to a certain extent, the user can immediately acquire the battery power by reminding the user of the low power, so that the user starts the vehicle, and further the generator is caused to provide power, and the power supply and consumption of the whole vehicle can be balanced.
In the embodiment of the invention, the first preset threshold, the second preset threshold, the third preset threshold, the fourth preset threshold, the fifth preset threshold, the sixth preset threshold, the seventh preset threshold, the eighth preset threshold and the ninth preset threshold have no size sequence relation, and each preset threshold is calibrated and confirmed according to the actual application condition of the vehicle and the performance of the storage battery; t 1、T2、T3、T4 has no size sequence relation, and are all of calibratable quantity, and calibration and confirmation are carried out according to the actual condition of the vehicle.
It should be understood that the sequence number of each step in the foregoing embodiment does not mean that the execution sequence of each process should be determined by the function and the internal logic, and should not limit the implementation process of the embodiment of the present invention.
In one embodiment, an electric energy controller is provided, where the electric energy controller is configured to implement the vehicle electric energy control method in the above embodiment and corresponds to the vehicle electric energy control method in the above embodiment one by one, and as shown in fig. 7, the electric energy controller includes a determining module, an acquiring module, and a control module. The functional modules are described in detail as follows:
a determining module 601 for determining a vehicle state of a vehicle;
An acquisition module 602, configured to acquire battery information, where the battery information includes an electric quantity of the battery;
And the control module 603 is configured to send a power supply cutoff instruction to the intelligent switch according to the electric quantity of the storage battery and the electric load information for the vehicle when the vehicle state is in the OFF state and in the vehicle fortification state, so that the intelligent switch cuts OFF the power supply of the related vehicle load according to the power supply cutoff instruction.
For specific limitations of the electric energy controller, reference may be made to the above limitations of the vehicle electric energy control method, and no further description is given here. Each of the above-described modules in the power controller may be implemented in whole or in part by software, hardware, and combinations thereof. The above modules may be embedded in hardware or may be independent of a processor in the vehicle computer device, or may be stored in software in a memory in the vehicle computer device, so that the processor may invoke and execute operations corresponding to the above modules.
In one embodiment, a power controller is provided that includes a processor, a memory, and a database connected by a system bus. Wherein the processor of the power controller is configured to provide computing and control capabilities. The memory of the power controller includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, computer programs, and a database. The internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage media. The database of the meter power controller is used to implement the vehicle power control method described in the above embodiment.
In one embodiment, as shown in fig. 8, there is provided an electric energy controller including a memory, a processor, and a computer program stored on the memory and executable on the processor, the processor implementing the vehicle electric energy control method described in the above embodiment when executing the computer program.
In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored, which when executed by a processor implements the vehicle electrical energy control method described in the above embodiments.
Those skilled in the art will appreciate that implementing all or part of the above-described methods in accordance with the embodiments may be accomplished by controlling the associated hardware by a computer program stored on a non-transitory computer readable storage medium, which when executed, may comprise the steps of the embodiments of the methods described above.
It will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-described division of the functional units and modules is illustrated, and in practical application, the above-described functional distribution may be performed by different functional units and modules according to needs, i.e. the internal structure of the apparatus is divided into different functional units or modules to perform all or part of the above-described functions.
The above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention, and are intended to be included in the scope of the present invention.
Claims (8)
1. A vehicle electric power control method characterized by comprising:
determining a vehicle state of a vehicle, wherein the vehicle state comprises a fortification state, an idling state and a flameout state;
acquiring storage battery information, wherein the storage battery information comprises storage battery electric quantity;
when the vehicle state is in an OFF state and in a vehicle fortification state, a power supply cut-OFF instruction is sent to the intelligent switch according to the electric quantity of the storage battery, so that the intelligent switch cuts OFF the power supply of a related vehicle load according to the power supply cut-OFF instruction;
Wherein, according to the battery power send power shutoff instruction to intelligent switch, include:
When the electric quantity of the storage battery is lower than a first preset threshold value, starting timing, and when the timing is up to T 1, sending a partial power supply cut-off instruction to the intelligent switch so that the intelligent switch cuts off the power supply of a first vehicle load according to the partial power supply cut-off instruction, wherein the first vehicle load is a partial load in the vehicle loads;
when the electric quantity of the storage battery is lower than a second preset threshold value, starting timing, and when the timing is up to T 2, sending all power-off instructions to the intelligent switch so that the intelligent switch cuts off the power supply of a second vehicle load according to all the power-off instructions, wherein the second vehicle load is other loads except for a vehicle fortification necessary load in the vehicle loads;
wherein when the vehicle state is in a flameout state and not in the OFF state, the method further comprises:
when the electric quantity of the storage battery is lower than a seventh preset threshold value, a low electric quantity prompt is sent to remind a user of the electric quantity of the storage battery, and a load power reduction instruction is sent to a comfortable load and an entertainment load, so that the power of the comfortable load and the entertainment load is reduced according to the load power reduction instruction;
And when the electric quantity of the storage battery is higher than an eighth preset threshold value, sending a load power recovery instruction to the comfort load and the entertainment load so that the comfort load and the entertainment load recover power according to the load power recovery instruction, wherein the eighth preset threshold value is the sum of the seventh preset threshold value and a second preset window, and the second preset window is related to the electric quantity of the storage battery.
2. The vehicle power control method according to claim 1, wherein the battery information further includes a battery current, and when the vehicle state is in the OFF state and in the vehicle fortification state, the method further includes:
When the electric quantity of the storage battery is lower than a third preset threshold value and the electric current of the storage battery is higher than a set abnormal threshold value, starting timing, and when the timing is up to T 3, sending all power-off instructions to the intelligent switch so that the intelligent switch cuts off the power supply of a second vehicle load according to all the power-off instructions, wherein the second vehicle load is other loads except for the vehicle fortification necessary load in the vehicle loads.
3. The vehicle power control method according to claim 1, wherein after the power cut-off instruction is sent to the intelligent switch according to the battery power, the method further comprises:
And when the vehicle state is not in the vehicle fortification state, sending a power restoration instruction to the intelligent switch so that the intelligent switch restores the power supply of the related vehicle load according to the power restoration instruction.
4. A vehicle electric power control method according to any one of claims 1 to 3, characterized in that when the vehicle state is in the OFF state and in the vehicle fortification state, the method further comprises:
When the electric quantity of the storage battery is lower than a fourth preset threshold value, starting timing, and when the timing is up to T 4, sending an external wake-up source disabling instruction to a vehicle bus so that the vehicle load on the vehicle bus does not respond to the wake-up of the external wake-up source according to the external wake-up source disabling instruction;
And when the vehicle state is not in the vehicle fortification state, sending a disable canceling instruction to the vehicle bus so as to enable the vehicle load on the vehicle bus to resume the wake-up of the external wake-up source to the vehicle load according to the disable canceling instruction.
5. The vehicle electric energy control method according to claim 2, characterized in that when the vehicle state is in an engine idle state, the method further comprises:
When the current of the storage battery is positive and the electric quantity of the storage battery is lower than a fifth preset threshold value, a step-and-step lifting instruction is sent to an engine control unit, so that the engine control unit can lift the idle speed of the engine according to the step-and-step lifting instruction, and a load limiting instruction is sent to a comfort load, so that the comfort load reduces power according to the load limiting instruction, and the comfort load comprises a seat heating device.
6. The vehicle electric power control method according to claim 5, characterized in that the engine control unit, after increasing the idle speed of the engine in accordance with the stepwise-increasing instruction, further comprises:
And when the current of the storage battery is positive and the electric quantity of the storage battery is higher than a sixth preset threshold, sending a grading reduction instruction to the engine control unit so that the engine control unit restores the idle speed of the engine according to the grading reduction instruction, and sending a restoring load instruction to the comfort load so that the comfort load restores power according to the restoring load instruction, wherein the sixth preset threshold is the sum of the fifth preset threshold and a first preset window, and the first preset window is related to the electric quantity of the storage battery.
7. An electrical energy controller, comprising:
the system comprises a determining module, a control module and a control module, wherein the determining module is used for determining the vehicle state of a vehicle, and the vehicle state comprises a fortification state, an idling state and a flameout state;
the acquisition module is used for acquiring storage battery information, wherein the storage battery information comprises storage battery electric quantity;
The control module is used for sending a power supply cut-OFF instruction to the intelligent switch according to the electric quantity of the storage battery when the vehicle state is in an OFF state and in a vehicle fortification state so that the intelligent switch cuts OFF the power supply of related vehicle loads according to the power supply cut-OFF instruction;
Wherein, according to the battery power send power shutoff instruction to intelligent switch, include:
When the electric quantity of the storage battery is lower than a first preset threshold value, starting timing, and when the timing is up to T1, sending a partial power supply cut-off instruction to the intelligent switch so that the intelligent switch cuts off the power supply of a first vehicle load according to the partial power supply cut-off instruction, wherein the first vehicle load is a partial load in the vehicle loads;
When the electric quantity of the storage battery is lower than a second preset threshold value, starting timing, and when the timing is up to T2, sending all power-off instructions to the intelligent switch so that the intelligent switch cuts off the power supply of a second vehicle load according to all the power-off instructions, wherein the second vehicle load is other loads except for a vehicle fortification necessary load in the vehicle loads;
Wherein when the vehicle state is in a flameout state and not in the OFF state, the controller is further configured to:
when the electric quantity of the storage battery is lower than a seventh preset threshold value, a low electric quantity prompt is sent to remind a user of the electric quantity of the storage battery, and a load power reduction instruction is sent to a comfortable load and an entertainment load, so that the power of the comfortable load and the entertainment load is reduced according to the load power reduction instruction;
And when the electric quantity of the storage battery is higher than an eighth preset threshold value, sending a load power recovery instruction to the comfort load and the entertainment load so that the comfort load and the entertainment load recover power according to the load power recovery instruction, wherein the eighth preset threshold value is the sum of the seventh preset threshold value and a second preset window, and the second preset window is related to the electric quantity of the storage battery.
8. A power control system comprising a smart switch and the power controller of claim 7, wherein the power controller is coupled to the smart switch.
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| CN113665499A (en) * | 2021-08-31 | 2021-11-19 | 中国第一汽车股份有限公司 | Electric automobile energy management system and control method |
| CN113911053B (en) * | 2021-10-18 | 2023-05-12 | 一汽解放汽车有限公司 | Vehicle low-voltage power supply management method, vehicle and storage medium |
| CN114274896A (en) * | 2021-12-29 | 2022-04-05 | 重庆金康赛力斯新能源汽车设计院有限公司 | Load throwing method and vehicle control system |
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| CN113212329A (en) | 2021-08-06 |
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