CN113602215A - Vehicle electric management method and device - Google Patents
Vehicle electric management method and device Download PDFInfo
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- CN113602215A CN113602215A CN202110813526.1A CN202110813526A CN113602215A CN 113602215 A CN113602215 A CN 113602215A CN 202110813526 A CN202110813526 A CN 202110813526A CN 113602215 A CN113602215 A CN 113602215A
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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
- B60R16/023—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/14—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from dynamo-electric generators driven at varying speed, e.g. on vehicle
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
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Abstract
The application relates to a whole vehicle electric management method and a device, relating to the technical field of vehicle electronic and electric control, wherein the whole vehicle electric management method comprises the following steps: monitoring the state of the storage battery to obtain the state information of the storage battery; monitoring the running state of the vehicle to obtain running state information; monitoring the load state of the generator to obtain the load state information of the generator; and regulating and controlling the generator or issuing the whole vehicle electricity management fault information according to the storage battery state information, the running state information or the generator load state information. The method and the device monitor the state of the storage battery, the running state of the vehicle and the load state of the generator, so that the generator can regulate and control and release the whole vehicle electricity management fault information when necessary.
Description
Technical Field
The application relates to the technical field of automobile electronic and electrical control, in particular to a method and a device for managing finished automobile electricity.
Background
At the present stage, the technical development in the automobile field is rapid, and the demand for automobiles in daily life is gradually increased. At present, most of automobiles adopt a traditional low-voltage unadjustable generator system, the generator is charged at constant voltage, intelligent variable output of the generator cannot be realized, and detection and protection of a storage battery system are lacked.
In order to solve the problem, the prior art mainly comprises an intelligent generator, a storage battery sensor and a power generation management system, wherein the storage battery sensor is used for acquiring the state of the storage battery, the power generation management system is used for judging the state of an engine, a pulse width modulation signal is sent to the intelligent generator through a hard wire, and the output voltage control of the intelligent generator is realized by adjusting the duty ratio.
However, the system can only realize unilateral communication with the generator, cannot acquire the state of the generator, can only realize open-loop control, and cannot acquire the charging current of the generator, so that the optimal charging performance cannot be realized at the maximum efficiency, and meanwhile, the whole vehicle information cannot be acquired, the running state of the vehicle cannot be acquired, the output voltage of the generator is regulated, and different generator control strategies are formulated.
Therefore, how to efficiently manage the electricity of the whole vehicle is a technical problem which needs to be solved urgently at present.
Disclosure of Invention
The application provides a whole vehicle electricity management method and a whole vehicle electricity management device, which are used for monitoring the state of a storage battery, the running state of a vehicle and the load state of a generator, so that the generator is regulated and controlled, and whole vehicle electricity management fault information is issued when necessary.
In a first aspect, the present application provides a method for managing vehicle electrical power, the method includes the following steps:
monitoring the state of the storage battery to obtain the state information of the storage battery;
monitoring the running state of the vehicle to obtain running state information;
monitoring the load state of the generator to obtain the load state information of the generator;
and regulating and controlling the generator or issuing the whole vehicle electricity management fault information according to the storage battery state information, the running state information or the generator load state information.
In the embodiment of the application, the functions of storage battery state detection, vehicle running state monitoring, generator load state detection, intelligent generator control, engine idle speed lifting, static current detection, storage battery reminding and the like can be realized according to the architecture scheme of the finished vehicle power management system, and the balance management of a finished vehicle power supply can be realized;
and monitoring the state of the storage battery, the running state of the vehicle and the load state of the generator, so that the generator can regulate and control, and issuing the whole vehicle electricity management fault information if necessary.
Specifically, the monitoring of the state of the storage battery and the obtaining of the state information of the storage battery include the following steps:
monitoring a storage battery SOC signal and a storage battery SOF signal;
generating the storage battery state information according to the battery SOC signal and the storage battery SOF signal; wherein the content of the first and second substances,
the storage battery state information is electric quantity surplus or electric quantity sufficient or electric quantity poor or electric quantity loss.
Specifically, the monitoring of the vehicle running state and the obtaining of the running state information include the following steps:
monitoring a vehicle speed signal, an engine rotating speed signal, an output shaft rotating speed signal, an accelerator pedal opening degree signal, a brake pedal signal, a neutral gear signal, a clutch signal and a Start gear signal of the vehicle;
acquiring the running state information according to the vehicle speed signal, the engine rotating speed signal, the output shaft rotating speed signal, the accelerator pedal opening degree signal, the brake pedal signal, the neutral gear signal, the clutch signal and the Start gear signal; wherein the content of the first and second substances,
the running state information comprises a vehicle stop state, a vehicle idling state, a vehicle acceleration state, a vehicle braking state, a vehicle sliding state, a vehicle starting state and a vehicle constant speed state.
Specifically, the monitoring of the generator load state and the obtaining of the generator load state information include the following steps:
monitoring an ignition lock ON gear signal, a Start gear signal, an engine rotating speed signal and a generator charging current signal;
searching a generator output efficiency MAP corresponding to the vehicle to obtain generator load state information; wherein the content of the first and second substances,
the generator load state information includes a high-load state of the generator, a medium-load state of the generator, and a low-load state of the generator.
Specifically, the step of regulating and controlling the generator or issuing the vehicle power management fault information according to the storage battery state information, the running state information or the generator load state information includes the following steps:
obtaining the current SOC value of the storage battery according to the SOC signal of the storage battery;
and comparing the current SOC value of the storage battery with a preset optimal SOC value of the storage battery, and regulating the output voltage of the generator according to the comparison difference.
Specifically, the step of regulating and controlling the generator or issuing the vehicle power management fault information according to the storage battery state information, the running state information or the generator load state information includes the following steps:
searching a preset generator output efficiency MAP according to the engine rotating speed signal and the generator charging current signal to obtain a current corresponding optimal charging current value;
and regulating the output current of the generator by taking the current load state of the generator as a basis and the optimal charging current value as an adjustment target.
Further, the whole vehicle power management method further comprises the following steps:
detecting the discharge current of the storage battery to obtain the static current of the whole vehicle;
and judging whether the vehicle is modified by an electric appliance or not according to the quiescent current of the whole vehicle.
Further, the whole vehicle power management method further comprises the following steps:
detecting the discharge current of the storage battery to obtain the load current after parking;
and judging whether the vehicle has a high-power electric appliance or not according to the load current after parking.
Further, the whole vehicle power management method further comprises the following steps:
when an ignition lock of the vehicle is positioned at an ON gear and the SOH value of the storage battery is smaller than a first SOH threshold value, generating a storage battery replacement reminding signal;
and when the ignition lock of the vehicle is positioned at an ON gear and the SOH value of the storage battery is smaller than a second SOH threshold value, generating a low-battery reminding signal of the storage battery.
In a second aspect, the present application provides a vehicle electrical management device, which includes:
the storage battery monitoring module is used for monitoring the state of the storage battery and acquiring storage battery state information;
the vehicle monitoring module is used for monitoring the running state of the vehicle and acquiring running state information;
the generator monitoring module is used for monitoring the load state of the generator and acquiring the load state information of the generator;
and the whole vehicle regulation and control module is used for regulating and controlling the generator or releasing whole vehicle electricity management fault information according to the storage battery state information, the running state information or the generator load state information.
The beneficial effect that technical scheme that this application provided brought includes:
1. the method and the device monitor the state of the storage battery, the running state of the vehicle and the load state of the generator, so that the generator can regulate and control and release the whole vehicle electricity management fault information when necessary.
2. According to the method and the device, the state of the storage battery is supervised according to the SOC signal of the storage battery, and related reminding work is carried out according to the condition, so that the smooth work of the whole vehicle is guaranteed.
Drawings
Interpretation of terms:
SOC: state Of Charge;
SOF (solid oxide Filter): state Of Function, functional State Of the battery;
SOH: state Of Health, battery Health;
CAN: controller Area Network, Controller Area Network;
LIN: local Interconnect Network, Local Interconnect Network;
ACC: adaptive Cruise Control, Adaptive Cruise Control;
PCU: power Control Unit, Power Control Unit.
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a flowchart illustrating steps of a vehicle electrical management method provided in an embodiment of the present application;
FIG. 2 is a schematic block diagram of a method for electrical management of a vehicle provided in an embodiment of the present application;
fig. 3 is a signal transmission frame diagram of a vehicle electrical management method provided in an embodiment of the present application;
fig. 4 is a block diagram of a structure of the entire vehicle electrical management device provided in the embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Embodiments of the present application will be described in further detail below with reference to the accompanying drawings.
The embodiment of the application provides a whole vehicle electricity management method and device, which are used for monitoring the state of a storage battery, the running state of a vehicle and the load state of a generator, so that the generator is regulated and controlled, and fault information of whole vehicle electricity management is issued when necessary.
In order to achieve the technical effects, the general idea of the application is as follows:
a whole vehicle electric management method comprises the following steps:
s1, monitoring the state of the storage battery to obtain the state information of the storage battery;
s2, monitoring the running state of the vehicle to obtain running state information;
s3, monitoring the load state of the generator to obtain the load state information of the generator;
and S4, regulating and controlling the generator or issuing the whole vehicle electricity management fault information according to the storage battery state information, the running state information or the generator load state information.
Embodiments of the present application will be described in further detail below with reference to the accompanying drawings.
In a first aspect, referring to fig. 1 to 3, an embodiment of the present application provides a method for managing vehicle electrical power, where the method includes the following steps:
s1, monitoring the state of the storage battery to obtain the state information of the storage battery;
s2, monitoring the running state of the vehicle to obtain running state information;
s3, monitoring the load state of the generator to obtain the load state information of the generator;
and S4, regulating and controlling the generator or issuing the whole vehicle electricity management fault information according to the storage battery state information, the running state information or the generator load state information.
The generator of the vehicle can be an intelligent generator, and the adjustable range of the output voltage of the intelligent generator is 22-31V.
In the embodiment of the application, the functions of storage battery state detection, vehicle running state monitoring, generator load state detection, intelligent generator control, engine idle speed lifting, static current detection, storage battery reminding and the like can be realized according to the architecture scheme of the finished vehicle power management system, and the balance management of a finished vehicle power supply can be realized;
and monitoring the state of the storage battery, the running state of the vehicle and the load state of the generator, so that the generator can regulate and control, and issuing the whole vehicle electricity management fault information if necessary.
It should be noted that, the information communication in the embodiment of the present application may be based on a CAN data bus and a LIN bus, and the data transmission in the embodiment of the present application is as follows:
inputting CAN information: according to the whole vehicle CAN bus and the storage battery sensor CAN bus, a vehicle speed signal, an engine rotating speed signal, an accelerator pedal opening signal, a brake pedal signal, a clutch signal, a neutral gear signal, a small light switch signal, a low light switch signal, a high light switch signal, an ON gear signal, a Start gear signal, an ACC gear signal, a storage battery SOC signal, a storage battery SOH signal, a storage battery SOF signal, a storage battery voltage signal, a storage battery current signal and a storage battery temperature signal CAN be obtained;
LIN bus input: a generator warning signal and a generator voltage signal;
hardware input: a generator charging current signal;
LIN line output: a control voltage signal of the intelligent generator;
output of the CAN bus: a fault diagnosis DM1 signal, a storage battery service life reminding signal, a low battery reminding signal, a TSC1 rotating speed signal and a quiescent current signal.
It should be noted that DM1 and TSC1 are both standard J1939 protocol messages, the fault diagnosis DM1 signal may specifically be a fault diagnosis information broadcast message, the main content is fault information, and the TSC1 rotation speed signal may specifically be an engine rotation speed/torque control message.
In addition, the specific monitoring working conditions in the embodiment of the application are as follows:
monitoring the state of the storage battery: the electric quantity of the storage battery can be divided into four intervals of surplus electric quantity, sufficient electric quantity, poor electric quantity and insufficient electric quantity through the SOC signal and the SOF signal of the storage battery;
monitoring the running state of the vehicle: according to the vehicle speed signal, the engine rotating speed signal, the output shaft rotating speed signal, the accelerator pedal opening degree signal, the brake pedal signal, the neutral gear signal, the clutch signal and the Start gear signal, the monitoring of the stop, idle speed, acceleration, braking, sliding, starting and constant speed states of the vehicle in the running state can be realized.
Detecting the load state of the generator: and searching a generator output efficiency MAP according to the ignition lock ON gear signal, the Start gear signal, the engine rotating speed signal and the generator charging current signal to obtain the current high, medium and low effective region states of the generator load.
Controlling an intelligent generator: and realizing the differentiated output of the generator under different working conditions according to the state of the storage battery, the load state of the generator and the running state of the vehicle.
Specifically, the method for monitoring the state of the storage battery and obtaining the state information of the storage battery comprises the following steps:
monitoring a storage battery SOC signal and a storage battery SOF signal;
generating storage battery state information according to the battery SOC signal and the storage battery SOF signal;
wherein the content of the first and second substances,
the storage battery state information is the surplus electric quantity or the sufficient electric quantity or the poor electric quantity or the insufficient electric quantity.
Specifically, the method for monitoring the running state of the vehicle and obtaining the running state information comprises the following steps:
monitoring a vehicle speed signal, an engine rotating speed signal, an output shaft rotating speed signal, an accelerator pedal opening degree signal, a brake pedal signal, a neutral gear signal, a clutch signal and a Start gear signal of the vehicle;
acquiring running state information according to a vehicle speed signal, an engine rotating speed signal, an output shaft rotating speed signal, an accelerator pedal opening degree signal, a brake pedal signal, a neutral gear signal, a clutch signal and a Start gear signal; wherein the content of the first and second substances,
the running state information is a vehicle stop state, a vehicle idling state, a vehicle acceleration state, a vehicle braking state, a vehicle sliding state, a vehicle starting state and a vehicle constant speed state.
Specifically, the monitoring of the load state of the generator and the obtaining of the load state information of the generator include the following steps:
monitoring an ignition lock ON gear signal, a Start gear signal, an engine rotating speed signal and a generator charging current signal;
searching a generator output efficiency MAP corresponding to the vehicle to obtain generator load state information; wherein the content of the first and second substances,
the generator load state information includes a high-load state of the generator, a medium-load state of the generator, and a low-load state of the generator.
Specifically, according to the storage battery state information, the running state information or the generator load state information, the method for regulating and controlling the generator or releasing the whole vehicle electricity management fault information comprises the following steps:
obtaining the current SOC value of the storage battery according to the SOC signal of the storage battery;
and comparing the current SOC value of the storage battery with a preset optimal SOC value of the storage battery, and regulating the output voltage of the generator according to the comparison difference.
Specifically, according to the storage battery state information, the running state information or the generator load state information, the method for regulating and controlling the generator or releasing the whole vehicle electricity management fault information comprises the following steps:
searching a preset generator output efficiency MAP according to the engine rotating speed signal and the generator charging current signal to obtain a current corresponding optimal charging current value;
and regulating the output current of the generator by taking the current load state of the generator as a basis and the optimal charging current value as an adjustment target.
Further, the whole vehicle power management method further comprises the following steps:
detecting the discharge current of the storage battery to obtain the static current of the whole vehicle;
and judging whether the vehicle is modified by electric appliances or not according to the quiescent current of the whole vehicle.
Further, the whole vehicle power management method further comprises the following steps:
detecting the discharge current of the storage battery to obtain the load current after parking;
and judging whether the vehicle has a high-power electric appliance or not according to the load current after parking.
The specific implementation is that the operation is as follows:
detecting the load current after parking, recording the power utilization condition of the vehicle after parking, knowing the power utilization habit of a user and judging whether the user is additionally provided with a high-power electric appliance;
the discharge current of the storage battery is detected at regular time through the intelligent battery sensor, so that the static current of the whole vehicle can be obtained and used for assisting the design acceptance of an electrical system of the vehicle; and (4) assisting to judge whether the electric appliance of the vehicle of the user is modified or not, estimating the longest parking time of the vehicle, and reminding the user of selling or maintaining the storage battery.
Further, the whole vehicle power management method further comprises the following steps:
when an ignition lock of the vehicle is positioned at an ON gear and the SOH value of the storage battery is smaller than a first SOH threshold value, generating a storage battery replacement reminding signal;
when an ignition lock of the vehicle is in an ON gear and the SOH value of the storage battery is smaller than a second SOH threshold value, generating a low-battery reminding signal of the storage battery;
it should be noted that the second SOH threshold is greater than the first SOH threshold.
Further, the whole vehicle electric management method further comprises an engine idle speed lifting process, wherein the engine idle speed lifting process comprises the following steps:
when the engine is in an idle state, the rotation speed of the engine can be controlled to be increased through the TSC1 signal according to the opening degree signal of the accelerator pedal, the state signal of the storage battery, the clutch signal and the neutral signal.
It should be noted that, in the embodiment of the present application, the power controller PCU function of the vehicle may be integrated in an existing controller of the entire vehicle or implemented by a separate controller;
according to the charging current signal of the generator and the charging efficiency MAP of the intelligent generator, the intelligent generator can be accurately controlled to charge the storage battery at the current maximum charging efficiency, and the aims of saving the electric quantity of the whole vehicle, charging at the fastest speed and the like are fulfilled;
based on the existing system architecture, the generator can be controlled in real time to carry out quick charging, floating charging, closing and the like, the storage battery is monitored and protected, and the whole vehicle electricity management balance can be realized.
It should be noted that SOC is State Of Charge, and State Of Charge can be understood as percentage Of remaining battery power;
the SOF is the State Of Function, the functional State Of the battery, and can be understood as a parameter in the control strategy;
SOH: state Of Health, battery Health, can be understood as the percentage Of the current capacity Of the battery to the factory capacity.
In a second aspect, referring to fig. 4, an embodiment of the present application provides a complete vehicle electrical management device, which is based on the complete vehicle electrical management method in the first aspect, and the complete vehicle electrical management device includes:
the storage battery monitoring module is used for monitoring the state of the storage battery and acquiring storage battery state information;
the vehicle monitoring module is used for monitoring the running state of the vehicle and acquiring running state information;
the generator monitoring module is used for monitoring the load state of the generator and acquiring the load state information of the generator;
and the whole vehicle regulation and control module is used for regulating and controlling the generator or releasing whole vehicle electricity management fault information according to the storage battery state information, the running state information or the generator load state information.
The generator of the vehicle can be an intelligent generator, and the adjustable range of the output voltage of the intelligent generator is 22-31V.
In the embodiment of the application, the functions of storage battery state detection, vehicle running state monitoring, generator load state detection, intelligent generator control, engine idle speed lifting, static current detection, storage battery reminding and the like can be realized according to the architecture scheme of the finished vehicle power management system, and the balance management of a finished vehicle power supply can be realized;
and monitoring the state of the storage battery, the running state of the vehicle and the load state of the generator, so that the generator can regulate and control, and issuing the whole vehicle electricity management fault information if necessary.
It should be noted that, the information communication in the embodiment of the present application may be based on a CAN data bus and a LIN bus, and the data transmission in the embodiment of the present application is as follows:
inputting CAN information: according to the whole vehicle CAN bus and the storage battery sensor CAN bus, a vehicle speed signal, an engine rotating speed signal, an accelerator pedal opening signal, a brake pedal signal, a clutch signal, a neutral gear signal, a small light switch signal, a low light switch signal, a high light switch signal, an ON gear signal, a Start gear signal, an ACC gear signal, a storage battery SOC signal, a storage battery SOH signal, a storage battery SOF signal, a storage battery voltage signal, a storage battery current signal and a storage battery temperature signal CAN be obtained;
LIN bus input: a generator warning signal and a generator voltage signal;
hardware input: a generator charging current signal;
LIN line output: a control voltage signal of the intelligent generator;
output of the CAN bus: a fault diagnosis DM1 signal, a storage battery service life reminding signal, a low battery reminding signal, a TSC1 rotating speed signal and a quiescent current signal.
It should be noted that DM1 and TSC1 are both standard J1939 protocol messages, the fault diagnosis DM1 signal may specifically be a fault diagnosis information broadcast message, the main content is fault information, and the TSC1 rotation speed signal may specifically be an engine rotation speed/torque control message.
In addition, the specific monitoring working conditions in the embodiment of the application are as follows:
monitoring the state of the storage battery: the electric quantity of the storage battery can be divided into four intervals of surplus electric quantity, sufficient electric quantity, poor electric quantity and insufficient electric quantity through the SOC signal and the SOF signal of the storage battery;
monitoring the running state of the vehicle: according to the vehicle speed signal, the engine rotating speed signal, the output shaft rotating speed signal, the accelerator pedal opening degree signal, the brake pedal signal, the neutral gear signal, the clutch signal and the Start gear signal, the monitoring of the stop, idle speed, acceleration, braking, sliding, starting and constant speed states of the vehicle in the running state can be realized.
Detecting the load state of the generator: and searching a generator output efficiency MAP according to the ignition lock ON gear signal, the Start gear signal, the engine rotating speed signal and the generator charging current signal to obtain the current high, medium and low effective region states of the generator load.
Controlling an intelligent generator: and realizing the differentiated output of the generator under different working conditions according to the state of the storage battery, the load state of the generator and the running state of the vehicle.
Specifically, the battery monitoring module, when monitoring the battery state and obtaining the battery state information, includes the following operations:
monitoring a storage battery SOC signal and a storage battery SOF signal;
generating storage battery state information according to the battery SOC signal and the storage battery SOF signal; wherein the content of the first and second substances,
the storage battery state information is the surplus electric quantity or the sufficient electric quantity or the poor electric quantity or the insufficient electric quantity.
Specifically, the vehicle monitoring module, when monitoring the driving state of the vehicle and obtaining the driving state information, includes the following operations:
monitoring a vehicle speed signal, an engine rotating speed signal, an output shaft rotating speed signal, an accelerator pedal opening degree signal, a brake pedal signal, a neutral gear signal, a clutch signal and a Start gear signal of the vehicle;
acquiring running state information according to a vehicle speed signal, an engine rotating speed signal, an output shaft rotating speed signal, an accelerator pedal opening degree signal, a brake pedal signal, a neutral gear signal, a clutch signal and a Start gear signal; wherein the content of the first and second substances,
the running state information is a vehicle stop state, a vehicle idling state, a vehicle acceleration state, a vehicle braking state, a vehicle sliding state, a vehicle starting state and a vehicle constant speed state.
Specifically, the vehicle monitoring module, when monitoring the generator load state and obtaining the generator load state information, includes the following operations:
monitoring an ignition lock ON gear signal, a Start gear signal, an engine rotating speed signal and a generator charging current signal;
searching a generator output efficiency MAP corresponding to the vehicle to obtain generator load state information; wherein the content of the first and second substances,
the generator load state information includes a high-load state of the generator, a medium-load state of the generator, and a low-load state of the generator.
Specifically, when the whole vehicle regulation and control module regulates and controls the generator or issues whole vehicle electricity management fault information according to the storage battery state information, the running state information or the generator load state information, the whole vehicle regulation and control module comprises the following operations:
obtaining the current SOC value of the storage battery according to the SOC signal of the storage battery;
and comparing the current SOC value of the storage battery with a preset optimal SOC value of the storage battery, and regulating the output voltage of the generator according to the comparison difference.
Specifically, when the whole vehicle regulation and control module regulates and controls the generator or issues whole vehicle electricity management fault information according to the storage battery state information, the running state information or the generator load state information, the whole vehicle regulation and control module comprises the following steps:
searching a preset generator output efficiency MAP according to the engine rotating speed signal and the generator charging current signal to obtain a current corresponding optimal charging current value;
and regulating the output current of the generator by taking the current load state of the generator as a basis and the optimal charging current value as an adjustment target.
Further, the battery monitoring module is also used for performing the following operations:
detecting the discharge current of the storage battery to obtain the static current of the whole vehicle;
and judging whether the vehicle is modified by electric appliances or not according to the quiescent current of the whole vehicle.
Further, the battery monitoring module is also used for performing the following operations:
detecting the discharge current of the storage battery to obtain the load current after parking;
and judging whether the vehicle has a high-power electric appliance or not according to the load current after parking.
The specific implementation is that the operation is as follows:
detecting the load current after parking, recording the power utilization condition of the vehicle after parking, knowing the power utilization habit of a user and judging whether the user is additionally provided with a high-power electric appliance;
the discharge current of the storage battery is detected at regular time through the intelligent battery sensor, so that the static current of the whole vehicle can be obtained and used for assisting the design acceptance of an electrical system of the vehicle; and (4) assisting to judge whether the electric appliance of the vehicle of the user is modified or not, estimating the longest parking time of the vehicle, and reminding the user of selling or maintaining the storage battery.
Further, the battery monitoring module is also used for performing the following operations:
when an ignition lock of the vehicle is positioned at an ON gear and the SOH value of the storage battery is smaller than a first SOH threshold value, generating a storage battery replacement reminding signal;
and when the ignition lock of the vehicle is positioned at an ON gear and the SOH value of the storage battery is smaller than a second SOH threshold value, generating a low-battery reminding signal of the storage battery.
It should be noted that the second SOH threshold is greater than the first SOH threshold.
Further, the whole vehicle regulation and control module of the whole vehicle electric management device is also used for implementing an engine idle speed lifting process, and the engine idle speed lifting process comprises the following steps:
when the engine is in an idle state, the rotation speed of the engine can be controlled to be increased through the TSC1 signal according to the opening degree signal of the accelerator pedal, the state signal of the storage battery, the clutch signal and the neutral signal.
It should be noted that, in the embodiment of the present application, the power controller PCU function of the vehicle may be integrated in an existing controller of the entire vehicle or implemented by a separate controller;
according to the charging current signal of the generator and the charging efficiency MAP of the intelligent generator, the intelligent generator can be accurately controlled to charge the storage battery at the current maximum charging efficiency, and the aims of saving the electric quantity of the whole vehicle, charging at the fastest speed and the like are fulfilled;
based on the existing system architecture, the generator can be controlled in real time to carry out quick charging, floating charging, closing and the like, the storage battery is monitored and protected, and the whole vehicle electricity management balance can be realized.
It is noted that, in the present application, relational terms such as "first" and "second", and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The foregoing are merely exemplary embodiments of the present application and are presented to enable those skilled in the art to understand and practice the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A whole vehicle electric management method is characterized by comprising the following steps:
monitoring the state of the storage battery to obtain the state information of the storage battery;
monitoring the running state of the vehicle to obtain running state information;
monitoring the load state of the generator to obtain the load state information of the generator;
and regulating and controlling the generator or issuing the whole vehicle electricity management fault information according to the storage battery state information, the running state information or the generator load state information.
2. The vehicle power management method according to claim 1, wherein the step of monitoring the battery state and obtaining the battery state information comprises the steps of:
monitoring a storage battery SOC signal and a storage battery SOF signal;
generating the storage battery state information according to the battery SOC signal and the storage battery SOF signal; wherein the content of the first and second substances,
the storage battery state information is electric quantity surplus or electric quantity sufficient or electric quantity poor or electric quantity loss.
3. The vehicle power management method according to claim 1, wherein the step of monitoring the driving state of the vehicle and obtaining the driving state information comprises the following steps:
monitoring a vehicle speed signal, an engine rotating speed signal, an output shaft rotating speed signal, an accelerator pedal opening degree signal, a brake pedal signal, a neutral gear signal, a clutch signal and a Start gear signal of the vehicle;
acquiring the running state information according to the vehicle speed signal, the engine rotating speed signal, the output shaft rotating speed signal, the accelerator pedal opening degree signal, the brake pedal signal, the neutral gear signal, the clutch signal and the Start gear signal; wherein the content of the first and second substances,
the running state information comprises a vehicle stop state, a vehicle idling state, a vehicle acceleration state, a vehicle braking state, a vehicle sliding state, a vehicle starting state and a vehicle constant speed state.
4. The vehicle power management method according to claim 1, wherein the step of monitoring the generator load state and obtaining the generator load state information comprises the steps of:
monitoring an ignition lock ON gear signal, a Start gear signal, an engine rotating speed signal and a generator charging current signal;
searching a generator output efficiency MAP corresponding to the vehicle to obtain generator load state information; wherein the content of the first and second substances,
the generator load state information includes a high-load state of the generator, a medium-load state of the generator, and a low-load state of the generator.
5. The vehicle power management method according to claim 1, wherein the step of regulating and controlling the generator or issuing the vehicle power management fault information according to the battery state information, the driving state information or the generator load state information comprises the following steps:
obtaining the current SOC value of the storage battery according to the SOC signal of the storage battery;
and comparing the current SOC value of the storage battery with a preset optimal SOC value of the storage battery, and regulating the output voltage of the generator according to the comparison difference.
6. The vehicle power management method according to claim 1, wherein the step of regulating and controlling the generator or issuing the vehicle power management fault information according to the battery state information, the driving state information or the generator load state information comprises the following steps:
searching a preset generator output efficiency MAP according to the engine rotating speed signal and the generator charging current signal to obtain a current corresponding optimal charging current value;
and regulating the output current of the generator by taking the current load state of the generator as a basis and the optimal charging current value as an adjustment target.
7. The vehicle electric management method according to claim 1, characterized by further comprising the steps of:
detecting the discharge current of the storage battery to obtain the static current of the whole vehicle;
and judging whether the vehicle is modified by an electric appliance or not according to the quiescent current of the whole vehicle.
8. The vehicle electric management method according to claim 1, characterized by further comprising the steps of:
detecting the discharge current of the storage battery to obtain the load current after parking;
and judging whether the vehicle has a high-power electric appliance or not according to the load current after parking.
9. The vehicle electric management method according to claim 1, characterized by further comprising the steps of:
when an ignition lock of the vehicle is positioned at an ON gear and the SOH value of the storage battery is smaller than a first SOH threshold value, generating a storage battery replacement reminding signal;
and when the ignition lock of the vehicle is positioned at an ON gear and the SOH value of the storage battery is smaller than a second SOH threshold value, generating a low-battery reminding signal of the storage battery.
10. The utility model provides a whole car electric management device which characterized in that, the device includes:
the storage battery monitoring module is used for monitoring the state of the storage battery and acquiring storage battery state information;
the vehicle monitoring module is used for monitoring the running state of the vehicle and acquiring running state information;
the generator monitoring module is used for monitoring the load state of the generator and acquiring the load state information of the generator;
and the whole vehicle regulation and control module is used for regulating and controlling the generator or releasing whole vehicle electricity management fault information according to the storage battery state information, the running state information or the generator load state information.
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