CN113954814A - Charging control method and device for vehicle and vehicle - Google Patents
Charging control method and device for vehicle and vehicle Download PDFInfo
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W20/00—Control systems specially adapted for hybrid vehicles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/12—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries responding to state of charge [SoC]
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W40/00—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models
- B60W40/10—Estimation or calculation of non-directly measurable driving parameters for road vehicle drive control systems not related to the control of a particular sub unit, e.g. by using mathematical models related to vehicle motion
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Abstract
本申请实施例公开了一种车辆的充电控制方法、装置和车辆，在车辆运行中，在确定第一剩余电量小于预设电量阈值、换挡杆位置为D/R档且该第一信息集合满足预设的第一条件时，则确定车辆当前处于低速且低电量的状态，该车辆自动开启充电模式，控制对电池进行充电，以维持电池的电量。这样，对于像P2.5和P2结构的单电机混合动力系统，在车速和电池电量都比较低的情况下，基于车辆的实时状态信息，并利用有利于怠速充电的时机，如车辆较长时间的静止状态或即将进入静止状态的过程，提供优化的电池充电控制策略，实现更智能和合理的对电池充电的控制，使电池维持合理的电量，从而为用户继续提高混动功能，提高车辆的使用体验。
The embodiments of the present application disclose a vehicle charging control method, device, and vehicle. During vehicle operation, when it is determined that the first remaining power is less than a preset power threshold, the shift lever position is the D/R gear, and the first information set is When the preset first condition is met, it is determined that the vehicle is currently in a low speed and low battery state, the vehicle automatically starts the charging mode, and controls the charging of the battery to maintain the battery's electricity. In this way, for single-motor hybrid systems with structures like P2.5 and P2, when the vehicle speed and battery power are relatively low, based on the real-time status information of the vehicle, and take advantage of the timing that is conducive to idling charging, such as the vehicle for a long time It provides an optimized battery charging control strategy to achieve a more intelligent and reasonable control of battery charging, so that the battery can maintain a reasonable amount of power, so as to continue to improve the hybrid function for users and improve the vehicle's Use experience.
Description
Technical Field
The present application relates to the field of vehicle technologies, and in particular, to a method and an apparatus for controlling charging of a vehicle, and a vehicle.
Background
As hybrid vehicles are favored by more and more users, users have placed more demands on the performance of the hybrid system of the vehicle. To meet different requirements, many types of hybrid systems have emerged, such as: the hybrid power system of bi-motor, the hybrid power system of single motor, every kind of hybrid power system has also designed different structures in order to satisfy the different user demand of user.
For a hybrid power system, it is very important to reasonably control the charging of a battery, and it can be ensured that the hybrid power system works in a hybrid power output state as much as possible, which is especially important for the low-speed running process of a vehicle. At present, a dual-motor hybrid system has a better charging control method, that is, the dual-motor hybrid system can drive and charge a power battery through a series mode in low-speed driving, so that the battery power of a vehicle can be maintained in a reasonable range, and the battery can be used as a power source to contribute to the driving of the vehicle. However, for a single motor hybrid system, for example: the single-motor hybrid power system with the Position (P) 2.5 and the P2 structure has less effective charging opportunities when the vehicle runs at low speed, and is difficult to maintain reasonable electric quantity of the power battery, and if the electric quantity of the battery is low, the single-motor hybrid power system is extremely bad using experience for users.
In view of the above, it is desirable to provide a method for controlling charging of a vehicle, such as a one-motor hybrid system having the P2.5 and P2 configurations, which can intelligently control charging of a battery when the vehicle speed and the battery charge amount are relatively low.
Disclosure of Invention
In order to solve the above technical problems, embodiments of the present application provide a method and an apparatus for controlling charging of a vehicle, and the vehicle, where an optimized battery charging control strategy is provided when a vehicle speed and a battery power are both relatively low, so that a single-motor hybrid system with a P2.5 and P2 structure can more intelligently and reasonably control a charging process of a battery, thereby improving a usage experience of the vehicle.
In a first aspect, a charge control method for a vehicle, which is applied to a single-motor hybrid vehicle, includes:
acquiring a current first remaining capacity, a gear shift lever position and a first information set of a battery of a vehicle during running of the vehicle;
and when the first residual electric quantity is determined to be smaller than a preset electric quantity threshold value, the gear shifting lever position is forward D/reverse R, and the first information set meets a preset first condition, starting a charging mode to control the charging of the battery and maintain the electric quantity of the battery, wherein the first condition is used for indicating that the vehicle is in a low-speed running state or a static state.
Optionally, the determining that the first remaining power is smaller than the preset power threshold specifically includes: and determining a preset electric quantity grade of the first residual electric quantity in an electric quantity grade relation stored locally in the vehicle, wherein the preset electric quantity grade represents that a battery of the vehicle has a charging demand.
Optionally, the first information set includes: the method comprises the steps of obtaining an accelerator pedal opening degree, a gradient and a first information subset, wherein the first information subset comprises an Electronic Parking Brake (EPB) module state and/or an automatic parking Auto Hold module state;
the first information set meeting a preset first condition comprises the following steps: the opening degree of the accelerator pedal is smaller than a first opening degree threshold value, the gradient is smaller than a first gradient threshold value, and the state of the module included in the first information subset is an activated state; when the first information subset comprises the EPB module and the Auto Hold module, the first information subset satisfies a preset first condition and comprises that the state of the EPB module or the state of the Auto Hold module is an activated state.
Optionally, the first information set includes: brake pedal opening, grade, and first vehicle speed;
the first information set meeting a preset first condition comprises the following steps: the brake pedal opening is greater than a second opening threshold, the grade is less than a second grade threshold, and the first vehicle speed is less than a first vehicle speed threshold.
Optionally, the method further includes:
acquiring a current first speed and gradient of the vehicle;
and when the first residual electric quantity is smaller than a preset electric quantity threshold value, the gear shifting lever is positioned in a parking P/neutral N position, the gradient is smaller than a third gradient threshold value, and the first vehicle speed is smaller than a second vehicle speed threshold value, starting the charging mode to control the charging of the battery and maintain the electric quantity of the battery.
Optionally, after the charging mode is turned on, the method further includes:
acquiring a current second information set of the vehicle;
and when the second information set is determined to meet a preset second condition, exiting the charging mode.
Optionally, the second information set includes a current second remaining capacity of a battery on the vehicle;
the second information set meeting a preset second condition comprises: the second remaining capacity indicates that the battery has no charging demand.
Optionally, the second set of information includes a second vehicle speed;
the second information set meeting a preset second condition comprises: the second vehicle speed is greater than a third vehicle speed threshold.
Optionally, the second information set includes: a shift lever position, a second subset of information and a third subset of information;
the second information set meeting a preset second condition comprises: the shift lever position is forward D/reverse R, the second subset of information satisfies a first sub-condition, and the third subset of information satisfies a second sub-condition.
Optionally, the second subset of information includes: EPB module state, Auto Hold module state, accelerator pedal opening, and grade;
the second information subset satisfying a preset first sub-condition comprises at least one of the following conditions: the EPB module state and the Auto Hold module state are both inactive states, the accelerator pedal opening is greater than a third opening threshold, and the grade is greater than a fourth grade threshold.
Optionally, the third subset of information includes: a second vehicle speed, a brake pedal opening, and a grade;
the third information subset satisfying a preset second sub-condition comprises at least one of the following conditions: the second vehicle speed is greater than a fourth vehicle speed threshold, the brake pedal opening is less than a fourth opening threshold, and the grade is greater than a fifth grade threshold.
In a second aspect, there is also provided a charge control device of a vehicle, applied to a single-motor hybrid vehicle, the device including:
the first acquisition unit is used for acquiring a current first residual capacity of a battery of the vehicle, a gear shift lever position and a first information set during vehicle operation;
the first processing unit is used for starting a charging mode to control charging of the battery and maintain the electric quantity of the battery when the first residual electric quantity is determined to be smaller than a preset electric quantity threshold value, the gear shift lever position is forward D/reverse R, and the first information set meets a preset first condition, wherein the first condition is used for indicating that the vehicle is in a low-speed running state or a static state.
Optionally, the determining that the first remaining power is smaller than the preset power threshold specifically includes: and determining a preset electric quantity grade of the first residual electric quantity in an electric quantity grade relation stored locally in the vehicle, wherein the preset electric quantity grade represents that a battery of the vehicle has a charging demand.
Optionally, the first information set includes: the method comprises the steps of obtaining an accelerator pedal opening, a gradient and a first information subset, wherein the first information subset comprises an Electronic Parking Brake (EPB) module state and/or an automatic parking Auto Hold module state;
the first information set meeting a preset first condition comprises the following steps: the opening degree of the accelerator pedal is smaller than a first opening degree threshold value, the gradient is smaller than a first gradient threshold value, and the state of the module included in the first information subset is an activated state; when the first information subset comprises the EPB module and the Auto Hold module, the first information subset satisfies a preset first condition and comprises that the state of the EPB module or the state of the Auto Hold module is an activated state.
Optionally, the first information set includes: brake pedal opening, grade, and first vehicle speed;
the first information set meeting a preset first condition comprises the following steps: the brake pedal opening is greater than a second opening threshold, the grade is less than a second grade threshold, and the first vehicle speed is less than a first vehicle speed threshold.
Optionally, the apparatus further comprises:
the second acquisition unit is used for acquiring the current first vehicle speed and gradient of the vehicle;
the first processing unit is further configured to, when it is determined that the first remaining power is smaller than a preset power threshold, the shift lever position is a parking P/neutral N, the gradient is smaller than a third gradient threshold, and the first vehicle speed is smaller than a second vehicle speed threshold, start the charging mode to control charging of the battery, and maintain the power of the battery.
Optionally, the apparatus further comprises:
a third obtaining unit, configured to obtain a current second information set of the vehicle;
and the second processing unit is used for exiting the charging mode when the second information set is determined to meet a preset second condition.
Optionally, the second information set includes a current second remaining capacity of a battery on the vehicle;
the second information set meeting a preset second condition comprises: the second remaining capacity indicates that the battery has no charging demand.
Optionally, the second set of information includes a second vehicle speed;
the second information set meeting a preset second condition comprises: the second vehicle speed is greater than a third vehicle speed threshold.
Optionally, the second information set includes: a shift lever position, a second subset of information and a third subset of information;
the second information set meeting a preset second condition comprises: the shift lever position is forward D/reverse R, the second subset of information satisfies a first sub-condition, and the third subset of information satisfies a second sub-condition.
Optionally, the second subset of information includes: EPB module state, Auto Hold module state, accelerator pedal opening, and grade;
the second information subset satisfying a preset first sub-condition comprises at least one of the following conditions: the EPB module state and the Auto Hold module state are both inactive states, the accelerator pedal opening is greater than a third opening threshold, and the grade is greater than a fourth grade threshold.
Optionally, the third subset of information includes: a second vehicle speed, a brake pedal opening, and a grade;
the third information subset satisfying a preset second sub-condition comprises at least one of the following conditions: the second vehicle speed is greater than a fourth vehicle speed threshold, the brake pedal opening is less than a fourth opening threshold, and the grade is greater than a fifth grade threshold.
In a third aspect, a single-motor hybrid vehicle is also provided, which comprises a charge control device of the vehicle, a battery and a collection device;
the acquisition device is used for acquiring the state information of the vehicle in the running process and sending the state information to the charging control device of the vehicle;
the charge control device of the vehicle is configured to execute the method provided by the first aspect to perform charge control on the battery, so that the battery can maintain the charge of the battery in a low-speed and low-charge situation.
In the embodiment of the application, a charging control method for a vehicle is provided, and is applied to a charging control device for a vehicle integrated or additionally installed in the vehicle, wherein the charging control device can automatically start a charging mode to control charging of a battery of the vehicle when the battery capacity of the vehicle is judged to be low and the running speed of the vehicle is low (for example, the vehicle runs in a congested road section and the battery capacity is low) during running of the vehicle. In specific implementation, the charging control device of the vehicle may obtain first state information including a current first remaining power of a battery on the vehicle, and determine whether the first state information satisfies a preset first condition, and if so, automatically start a charging mode to control charging of the battery of the vehicle to maintain the power of the battery. Thus, by the method provided by the embodiment of the application, for the single-motor hybrid power system with the structures like P2.5 and P2, under the condition that the vehicle speed and the battery electric quantity are both relatively low, the optimized battery charging control strategy can be provided based on the real-time state information of the vehicle and by utilizing the opportunity favorable for idle charging, such as the process that the vehicle is in a stationary state for a long time or is about to enter the stationary state, so that the more intelligent and reasonable control on the battery charging is realized, and the use experience of the vehicle is improved.
Drawings
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 described in the present application, and other drawings can be obtained by those skilled in the art according to the drawings.
FIG. 1 is a schematic structural diagram of a single-motor hybrid power system with a P2.5 structure in an embodiment of the present application;
FIG. 2 is a schematic flowchart of a charging control method for a vehicle according to an embodiment of the present disclosure;
fig. 3 is a schematic structural diagram of a charging control device of a vehicle according to an embodiment of the present application;
fig. 4 is a schematic structural diagram of a vehicle according to an embodiment of the present application.
Detailed Description
The single-motor hybrid power system with the P2 and P2.5 structures is widely applied, and comprehensive introduction can be carried out in consideration of patent expansion.
Fig. 1 is a schematic diagram of a single motor hybrid system 100 of a P2.5 configuration. Referring to fig. 1, the system 100 may include, for example: an engine 10, a drive motor 20, a power battery pack 30 (hereinafter referred to as a battery), a clutch 40, a synchronizer 1, and a synchronizer 2. When the clutch 40 is closed and the synchronizers 1 and 2 are in gear, the parallel driving mode is entered, that is, the engine 10 and the driving motor 20 participate in driving simultaneously, and the engine 10 can output redundant power to charge the power battery pack 30 through the driving motor 20; when the clutch 40 is closed, the synchronizer 1 is in gear and the synchronizer 2 is in neutral, an idle charging mode is entered, namely, the vehicle stops running, the engine 10 works in a mode similar to the idle speed, the engine 10 outputs power, and the driving motor 20 serves as a generator to charge the power battery pack 30; the electric drive mode is entered when clutch 40 is open, synchronizer 1 is in gear or neutral, and synchronizer 2 is in gear.
It can be seen that, if the hybrid system with the P2.5 structure shown in fig. 1 encounters a situation that the battery power is low, when the vehicle runs at a low speed, the effective charging chance is small, it is difficult to maintain the reasonable power of the power battery, and it is an extremely bad use experience for users. If the battery capacity can be maintained in a reasonable range (namely, the battery capacity is larger than the lowest operation capacity allowed by the battery capacity as a power source), the battery capacity is ensured not to continuously decrease, and the user can still select a hybrid power mode to drive the vehicle to run. This slow driving scenario is experienced by the user almost every day, for example: when driving through highway section or waiting traffic lights that block up, if the battery electric quantity is lower, need to provide more intelligent mode and realize the charge control of battery urgently, let the electric quantity of battery can maintain, provide more intelligent and reasonable with car experience for the user.
Based on this, the embodiment of the application provides a charging control method for a vehicle, which is a charging control device integrated or additionally installed in the vehicle, and the device can automatically start a charging mode and control charging of a battery of the vehicle to maintain the electric quantity of the battery when the electric quantity of the battery of the vehicle is low and the running speed of the vehicle is low during running of the vehicle. Therefore, for single-motor hybrid power systems with structures such as P2.5 and P2, under the condition that the vehicle speed and the battery electric quantity are low, the optimized battery charging control strategy can be provided based on the real-time state information of the vehicle and by utilizing the opportunity favorable for idle charging, such as the process that the vehicle is in a stationary state for a long time or is about to enter the stationary state, so that the more intelligent and reasonable control on the battery charging is realized, and the use experience of the vehicle is improved.
The following describes a specific implementation manner of a charging control method for a vehicle in an embodiment of the present application in detail by way of embodiments with reference to the accompanying drawings.
Fig. 2 shows a flow chart of a charging control method for a vehicle according to an embodiment of the present application. Referring to fig. 2, the method is applied to a single-motor hybrid vehicle, and specifically may include:
The first status information may include information collected by each sensor of the vehicle, information displayed by each meter, and status information of each functional module. The acquisition unit of the vehicle may acquire the first state information and send the first state information to the charge control device of the vehicle, and the charge control device of the vehicle executes the method shown in fig. 2 to realize the charge control of the battery.
In the embodiment of the present application, the charge control device of the vehicle may be a functional module for implementing the method, and the functional module may be a module integrated when the single-motor hybrid vehicle leaves a factory, or a module installed after the single-motor hybrid vehicle leaves the factory. As an example, the charging control device of the vehicle may be a functional module in a vehicle control unit of a single-motor hybrid vehicle, and based on the functional module, the vehicle control unit may control the output power of the engine, control the power generation of the driving motor in the transmission, and realize the charging of the battery.
In a possible implementation manner, the first state information may also include: a first amount of remaining power, a shift lever position and a first set of information.
As one example, the first set of information may include: the method comprises the steps of accelerator pedal opening, gradient and a first information subset, wherein the first information subset comprises an Electronic Parking Brake (EPB) module state and/or an Auto-Hold module state.
As another example, the first set of information may also include: brake pedal opening, grade, and first vehicle speed.
In another possible implementation manner, the first state information may also include: a first amount of remaining power, a shift lever position, and a first set of information including a first vehicle speed and a grade.
It should be noted that, in the embodiment of the present application, the first status information may also include the status information mentioned in any two of the above three examples, and may also include all the status information mentioned in the above three examples.
It can be seen that through S201, a data basis is provided for the subsequent execution of S202, so that intelligent control of the battery charging process is possible.
During specific implementation, the electric quantity grade relation of the battery is locally stored in the vehicle, when the charging control device of the vehicle obtains the first residual electric quantity, the first residual electric quantity can be compared with each electric quantity grade relation in the electric quantity grade relation, and the preset electric quantity grade corresponding to the first residual electric quantity is determined. When the charging control device of the vehicle determines that the residual electric quantity of the battery is low through the preset electric quantity grade, the energy management module of the finished vehicle can be requested to determine whether the battery has a charging requirement or not through calculating the power requirement, torque distribution and the like of the finished vehicle, the charging requirement is fed back to the charging control device of the vehicle, and the charging control device of the vehicle is triggered to execute the charging control method provided by the embodiment of the application.
For example: assuming that a grade is divided from 100% -0% of full charge of the battery every 20%, the grade can be divided into 5 charge grades, and the charge grades can be respectively according to the charge from high to low: electric quantity grade 1: 100% -81%, electric quantity grade 2: 80% -61%, electric quantity grade 3: 60% -41%, electricity level 4: 40% -21%, electricity level 5: 20% -0, if the first remaining capacity is 18% of the full capacity, the preset capacity level corresponding to the first remaining capacity can be determined to be a capacity level 5.
It should be noted that different charge levels represent different charging power requirements and charging urgency of the battery. The lower the residual capacity is, the higher the electric quantity grade is, the higher the charging power requirement of the battery is and the higher the emergency degree is; conversely, the higher the remaining charge and the lower the charge level, the lower the charging power requirement and the lower the urgency of the battery.
In S202, it is determined that the first remaining power is smaller than the preset power threshold, which may specifically be: and determining a preset electric quantity grade of the first residual electric quantity in an electric quantity grade relation stored locally in the vehicle, wherein the preset electric quantity grade represents that a battery of the vehicle has a charging demand.
In the embodiment of the application, various factors are considered in an intelligent control strategy, the charging opportunity is increased as much as possible, the design purpose of increasing the electric quantity is achieved, and meanwhile the expectation of a driver is not influenced. Based on this, in the embodiment of the present application, a plurality of combinations of the first information sets and the first conditions are designed in advance.
As an example, when the first set of information includes: the method includes the steps of obtaining a first information subset, wherein when the first information subset includes an EPB module state and/or an Auto home module state, the first information subset meeting a preset first condition may include: the accelerator pedal opening is less than a first opening threshold, the grade is less than a first grade threshold, and the EPB module state or the Auto Hold module state is an active state.
In this example, the opening degree of the accelerator pedal is determined, and the opening degree of the accelerator pedal and the state of the EPB module or the Auto Hold module are simultaneously taken into consideration as control factors, considering that the too large opening degree of the accelerator pedal may trigger the activation of the states of the EPB module and the Auto Hold module. In addition, the gradient of the road on which the vehicle is located is a control factor to be taken as a reference, considering that the gradient is too large, the power source cannot output at the switching time of the charging mode and the charging mode is quitted, and the risk of slope slipping may occur.
As yet another example, when the first set of information may also include: when the brake pedal opening degree, the gradient and the first vehicle speed are satisfied, the first information set satisfying a preset first condition may include: the opening degree of the brake pedal is larger than a second opening degree threshold value, the gradient is smaller than a second gradient threshold value, and the first vehicle speed is smaller than a first vehicle speed threshold value.
Before S202 and after S201, the embodiment of the present application may further include: and determining a second opening degree threshold value based on a first corresponding relation and a preset electric quantity grade of the first residual electric quantity in an electric quantity grade relation locally stored in the vehicle, wherein the first corresponding relation is a corresponding relation between each electric quantity grade stored in the vehicle in advance and the opening degree threshold value of the brake pedal, and the first corresponding relation comprises a corresponding relation between the preset electric quantity grade and the second opening degree threshold value. For example: the first correspondence includes: the method includes the steps that an electric quantity level 1-opening degree threshold value 1, an electric quantity level 2-opening degree threshold value 2, an electric quantity level 3-opening degree threshold value 3, an electric quantity level 4-opening degree threshold value 4 and an electric quantity level 5-opening degree threshold value 5 are determined, and if the preset electric quantity level corresponding to the first residual electric quantity is determined to be the electric quantity level 5 in the embodiment of the application, the second opening degree threshold value is the opening degree threshold value 5.
In other possible implementations, when it is determined that the first remaining power is less than the preset power threshold but the shift lever position is the parking P/neutral N, the first information set that may be further obtained in the embodiment of the present application may further include a current first vehicle speed and a gradient of the vehicle, and the first information set satisfies a first condition, which may be specifically: the first vehicle speed is less than the second vehicle speed threshold and the grade is less than the third grade threshold.
Thus, through the implementation shown above, it can be determined whether the first information set satisfies a preset first condition, and if so, the charging control device of the vehicle can start the charging mode of the vehicle to control charging of the battery. For example: after a charging mode is started, a charging control device of the vehicle generates and sends a control command to the vehicle control unit, and the vehicle control unit controls the battery to be charged based on the control command.
It can be understood that, in the embodiment of the present application, the charging mode is turned on, and for a transmission with a charging gear, the charging mode may refer to controlling the transmission to enter the charging gear; or, it may also refer to controlling the output torque of the engine, directly driving the motor to generate power, and charging the battery, for example, in the P2 configuration, the specific operations may include: and closing a clutch between the engine and the motor and disconnecting the clutch between the motor and the gearbox.
The method may further include the control portion exiting the charging mode after the charging mode is turned on to charge the battery. In specific implementation, as shown in fig. 2, after S202, the embodiment of the present application may further include:
s203, acquiring a current second information set of the vehicle;
and S204, when the second information set is determined to meet the preset second condition, exiting the charging mode.
In the embodiment of the present application, in consideration of the fact that an intelligent control strategy needs to refer to various factors, a scenario that meets an expected exit from a charging mode is designed as much as possible, and a combination of a plurality of second information sets and second conditions is designed in advance in the embodiment of the present application.
As an example, the second information set may include a second remaining amount of the battery currently on the vehicle, and the second information set satisfying the preset second condition may include: the second remaining capacity indicates that the battery has no charging demand.
As another example, the second set of information may also include a second vehicle speed, and the second set of information satisfying the preset second condition includes: the second vehicle speed is greater than a third vehicle speed threshold. And the third vehicle speed threshold value is a preset threshold value and is different from the first vehicle speed threshold value.
For example, the third vehicle speed threshold may be the sum of the first vehicle speed threshold and a preset vehicle speed. The first vehicle speed threshold may be the same as or different from the first vehicle speed threshold referred to in S202. The first vehicle speed is preset as a difference designed for the vehicle speed.
In the embodiment of the present invention, in order to avoid the adverse effect on the performance of the battery and the vehicle caused by frequent entering and exiting of the charging mode due to the small range of the input signal, a difference is added or reduced based on the original threshold, and the preset difference is preset, for example, the preset vehicle speed.
As yet another example, the second set of information may also include: a shift lever position, a second subset of information and a third subset of information; then, the second set of information satisfying the preset second condition may include: the shift lever position is forward D/reverse R, the second information subset satisfies the first sub-condition, and the third information subset satisfies the second sub-condition.
Wherein the second subset of information may include the following information: EPB and Auto Hold module states, accelerator pedal opening, and grade; then, the second subset of information satisfying the preset first sub-condition comprises at least one of the following conditions: the EPB module state and the Auto Hold module state are both inactive states, the accelerator pedal opening is greater than a third opening threshold, and the grade is greater than a fourth grade threshold.
For example, the third opening degree threshold is the sum of the first opening degree threshold and the preset first opening degree, and the fourth gradient threshold is the sum of the first gradient threshold and the preset first gradient.
The third subset of information may include the following information: a second vehicle speed, a brake pedal opening, and a grade; then, the third subset of information satisfying the preset second sub-condition comprises at least one of the following conditions: the second vehicle speed is greater than a fourth vehicle speed threshold, the brake pedal opening is less than a fourth opening threshold, and the grade is greater than a fifth grade threshold.
For example, the fourth vehicle speed threshold is the sum of the second vehicle speed threshold and the preset second vehicle speed, the fifth opening threshold is the difference between the second opening threshold and the preset second opening, and the fifth gradient threshold is the sum of the second gradient threshold and the preset second gradient.
It should be noted that the preset first vehicle speed, the preset second vehicle speed, the preset first opening, the preset second opening, the preset first gradient and the preset second gradient are all difference amounts preset in the embodiment of the present application, so as to avoid frequent entering and exiting of the charging mode due to the change of the input signal in a small range, and achieve a better effect in the embodiment of the present application.
In this way, with the implementation shown in the above three examples, it may be determined whether the second set of information satisfies a preset second condition, and if so, the charge control device of the vehicle may exit the charge mode of the vehicle. For example: after a charging control device of a vehicle starts a charging mode, if the charging mode needs to be exited, a control instruction is generated and sent to a vehicle control unit, and the vehicle control unit controls the vehicle control unit to exit the charging of the battery based on the method provided by the embodiment of the application.
Therefore, according to the charge control method for the vehicle provided by the embodiment of the application, the charge control device of the vehicle integrated or additionally installed in the vehicle can acquire the first state information including the current first remaining power of the battery on the vehicle, and determine that the first remaining power in the first state information is smaller than the preset power threshold, the shift lever position is forward D/reverse R, and the first information set meets the preset first condition, then the charge mode is automatically started, and the battery of the vehicle is controlled to be charged, so that the power of the battery is maintained. And, in case of turning on the charging mode, if the acquired second information set satisfies a preset second condition, automatically exiting the charging mode. Thus, by the method provided by the embodiment of the application, for the single-motor hybrid power system with the structures like P2.5 and P2, under the condition that the vehicle speed and the battery electric quantity are both relatively low, an optimized automatic control strategy for battery charging is provided by utilizing the opportunity favorable for idle charging, such as a process that the vehicle is in a stationary state for a long time or is about to enter the stationary state, based on the real-time state information of the vehicle, so that the more intelligent and reasonable control on the battery charging is realized, and the use experience of the vehicle is improved.
Accordingly, the present embodiment also provides a charging control device 300 for a vehicle, and referring to fig. 3, the device 300 is applied to a single-motor hybrid vehicle, and the device 300 may include:
a first obtaining unit 301, configured to obtain, during vehicle operation, a current first remaining capacity of a battery of the vehicle, a shift lever position, and a first information set;
a first processing unit 302, configured to, when it is determined that the first remaining power is less than a preset power threshold, the shift lever position is forward D/reverse R, and the first information set satisfies a preset first condition, start a charging mode to control charging of the battery, and maintain the power of the battery, where the first condition is used to indicate that the vehicle is in a low-speed driving state or a stationary state.
Optionally, the determining that the first remaining power is smaller than the preset power threshold specifically includes: and determining a preset electric quantity grade of the first residual electric quantity in an electric quantity grade relation stored locally in the vehicle, wherein the preset electric quantity grade represents that a battery of the vehicle has a charging demand.
Optionally, the first information set includes: the method comprises the steps of obtaining an accelerator pedal opening, a gradient and a first information subset, wherein the first information subset comprises an Electronic Parking Brake (EPB) module state and/or an automatic parking Auto Hold module state;
the first information set meeting a preset first condition comprises the following steps: the opening degree of the accelerator pedal is smaller than a first opening degree threshold value, the gradient is smaller than a first gradient threshold value, and the state of the module included in the first information subset is an activated state; when the first information subset comprises the EPB module and the Auto Hold module, the first information subset satisfies a preset first condition and comprises that the state of the EPB module or the state of the Auto Hold module is an activated state.
Optionally, the first information set includes: brake pedal opening, grade, and first vehicle speed;
the first information set meeting a preset first condition comprises the following steps: the brake pedal opening is greater than a second opening threshold, the grade is less than a second grade threshold, and the first vehicle speed is less than a first vehicle speed threshold.
30 optionally, the apparatus 300 further comprises:
the second acquisition unit is used for acquiring the current first vehicle speed and gradient of the vehicle;
the first processing unit 302 is further configured to, when it is determined that the first remaining power is less than a preset power threshold, the shift lever position is a parking P/neutral N, the gradient is less than a third gradient threshold, and the first vehicle speed is less than a second vehicle speed threshold, start the charging mode to control charging of the battery, and maintain the power of the battery.
Optionally, the apparatus 300 further includes:
a third obtaining unit, configured to obtain a current second information set of the vehicle;
and the second processing unit is used for exiting the charging mode when the second information set is determined to meet a preset second condition.
Optionally, the second information set includes a current second remaining capacity of a battery on the vehicle;
the second information set meeting a preset second condition comprises: the second remaining capacity indicates that the battery has no charging demand.
Optionally, the second set of information includes a second vehicle speed;
the second information set meeting a preset second condition comprises: the second vehicle speed is greater than a third vehicle speed threshold.
Optionally, the second information set includes: a shift lever position, a second subset of information and a third subset of information;
the second information set meeting a preset second condition comprises: the shift lever position is forward D/reverse R, the second subset of information satisfies a first sub-condition, and the third subset of information satisfies a second sub-condition.
Optionally, the second subset of information includes: EPB module state, Auto Hold module state, accelerator pedal opening, and grade;
the second information subset satisfying a preset first sub-condition comprises at least one of the following conditions: the EPB module state and the Auto Hold module state are both inactive states, the accelerator pedal opening is greater than a third opening threshold, and the grade is greater than a fourth grade threshold.
Optionally, the third subset of information includes: a second vehicle speed, a brake pedal opening, and a grade;
the third information subset satisfying a preset second sub-condition comprises at least one of the following conditions: the second vehicle speed is greater than a fourth vehicle speed threshold, the brake pedal opening is less than a fourth opening threshold, and the grade is greater than a fifth grade threshold.
The above description is related to a charging control apparatus for a vehicle, wherein specific implementation manners and achieved effects can be referred to the description of an embodiment of a charging control method for a vehicle shown in fig. 2, and are not repeated herein.
In addition, the embodiment of the present application also provides a single-motor hybrid vehicle 400, where the single-motor hybrid vehicle 400 includes a charge control device 401, a battery 402, and an acquisition device 403 of the vehicle; the acquisition device 403 is configured to acquire state information of the vehicle 400 in the running process and send the state information to the charging control device 401 of the vehicle; the charging control device 401 of the vehicle, configured to execute the method shown in fig. 2, automatically start and exit the charging mode to control the charging of the battery 402, and maintain the charge of the battery 402, so that the battery 402 can maintain the charge of the battery 402 at a low speed and a low charge.
The above description is related to a single-motor hybrid vehicle 400, wherein specific implementation manners and achieved effects can be referred to the description of the charging control method for a vehicle shown in fig. 2 and the charging control device for a vehicle shown in fig. 3, and detailed description thereof is omitted here.
In the names of "first state information", "first remaining capacity", and the like, the "first" mentioned in the embodiments of the present application is used merely as a name identification, and does not represent the first in sequence. The same applies to "second" etc.
As can be seen from the above description of the embodiments, those skilled in the art can clearly understand that all or part of the steps in the above embodiment methods can be implemented by software plus a general hardware platform. Based on such understanding, the technical solution of the present application may be embodied in the form of a software product, which may be stored in a storage medium, such as a read-only memory (ROM)/RAM, a magnetic disk, an optical disk, or the like, and includes several instructions for enabling a computer device (which may be a personal computer, a server, or a network communication device such as a router) to execute the method according to the embodiments or some parts of the embodiments of the present application.
The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, the device embodiments and vehicle embodiments are substantially similar to the method embodiments and are therefore described in a relatively simple manner, with reference to the section of the description of the method embodiments that follows. The above-described embodiments of the apparatus and the vehicle are merely illustrative, wherein the modules described as separate parts may or may not be physically separate, and the parts displayed as modules may or may not be physical modules, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
The above description is only a preferred embodiment of the present application and is not intended to limit the scope of the present application. It should be noted that, for a person skilled in the art, several improvements and modifications can be made without departing from the scope of the present application, and these improvements and modifications should also be considered as the protection scope of the present application.
Claims (23)
1. A charge control method of a vehicle, characterized by being applied to a single-motor hybrid vehicle, the method comprising:
acquiring a current first remaining capacity, a gear shift lever position and a first information set of a battery of a vehicle during running of the vehicle;
and when the first residual electric quantity is determined to be smaller than a preset electric quantity threshold value, the gear shifting lever position is forward D/reverse R, and the first information set meets a preset first condition, starting a charging mode to control the charging of the battery and maintain the electric quantity of the battery, wherein the first condition is used for indicating that the vehicle is in a low-speed running state or a static state.
2. The method according to claim 1, wherein the determining that the first remaining power is smaller than a preset power threshold specifically comprises: and determining a preset electric quantity grade of the first residual electric quantity in an electric quantity grade relation stored locally in the vehicle, wherein the preset electric quantity grade represents that a battery of the vehicle has a charging demand.
3. The method of claim 1,
the first set of information includes: the method comprises the steps of obtaining an accelerator pedal opening, a gradient and a first information subset, wherein the first information subset comprises an Electronic Parking Brake (EPB) module state and/or an automatic parking Auto Hold module state;
the first information set meeting a preset first condition comprises the following steps: the opening degree of the accelerator pedal is smaller than a first opening degree threshold value, the gradient is smaller than a first gradient threshold value, and the state of the module included in the first information subset is an activated state; when the first information subset comprises the EPB module and the Auto Hold module, the first information subset satisfies a preset first condition and comprises that the state of the EPB module or the state of the Auto Hold module is an activated state.
4. The method of claim 1,
the first set of information includes: brake pedal opening, grade, and first vehicle speed;
the first information set meeting a preset first condition comprises the following steps: the brake pedal opening is greater than a second opening threshold, the grade is less than a second grade threshold, and the first vehicle speed is less than a first vehicle speed threshold.
5. The method of claim 1, further comprising:
acquiring a current first speed and gradient of the vehicle;
and when the first residual electric quantity is smaller than a preset electric quantity threshold value, the gear shifting lever is positioned in a parking P/neutral N position, the gradient is smaller than a third gradient threshold value, and the first vehicle speed is smaller than a second vehicle speed threshold value, starting the charging mode to control the charging of the battery and maintain the electric quantity of the battery.
6. The method of any of claims 1-5, wherein after the initiating the charging mode, the method further comprises:
acquiring a current second information set of the vehicle;
and when the second information set is determined to meet a preset second condition, exiting the charging mode.
7. The method of claim 6,
the second set of information comprises a current second remaining amount of battery on the vehicle;
the second information set meeting a preset second condition comprises: the second remaining capacity indicates that the battery has no charging demand.
8. The method of claim 6,
the second set of information includes a second vehicle speed;
the second information set meeting a preset second condition comprises: the second vehicle speed is greater than a third vehicle speed threshold.
9. The method of claim 6,
the second set of information comprises: a shift lever position, a second subset of information and a third subset of information;
the second information set meeting a preset second condition comprises: the shift lever position is forward D/reverse R, the second subset of information satisfies a first sub-condition, and the third subset of information satisfies a second sub-condition.
10. The method of claim 9,
the second subset of information comprises: EPB module state, Auto Hold module state, accelerator pedal opening, and grade;
the second information subset satisfying a preset first sub-condition comprises at least one of the following conditions: the EPB module state and the Auto Hold module state are both inactive states, the accelerator pedal opening is greater than a third opening threshold, and the grade is greater than a fourth grade threshold.
11. The method of claim 9,
the third subset of information comprises: a second vehicle speed, a brake pedal opening, and a grade;
the third information subset satisfying a preset second sub-condition comprises at least one of the following conditions: the second vehicle speed is greater than a fourth vehicle speed threshold, the brake pedal opening is less than a fourth opening threshold, and the grade is greater than a fifth grade threshold.
12. A charge control apparatus of a vehicle, applied to a single-motor hybrid vehicle, the apparatus comprising:
the first acquisition unit is used for acquiring a current first residual capacity of a battery of the vehicle, a gear shift lever position and a first information set during vehicle operation;
the first processing unit is used for starting a charging mode to control charging of the battery and maintain the electric quantity of the battery when the first residual electric quantity is determined to be smaller than a preset electric quantity threshold value, the gear shift lever position is forward D/reverse R, and the first information set meets a preset first condition, wherein the first condition is used for indicating that the vehicle is in a low-speed running state or a static state.
13. The apparatus according to claim 12, wherein the determining that the first remaining power is smaller than a preset power threshold specifically includes: and determining a preset electric quantity grade of the first residual electric quantity in an electric quantity grade relation stored locally in the vehicle, wherein the preset electric quantity grade represents that a battery of the vehicle has a charging demand.
14. The apparatus of claim 12,
the first set of information includes: the method comprises the steps of obtaining an accelerator pedal opening, a gradient and a first information subset, wherein the first information subset comprises an Electronic Parking Brake (EPB) module state and/or an automatic parking Auto Hold module state;
the first information set meeting a preset first condition comprises the following steps: the opening degree of the accelerator pedal is smaller than a first opening degree threshold value, the gradient is smaller than a first gradient threshold value, and the state of the module included in the first information subset is an activated state; when the first information subset comprises the EPB module and the Auto Hold module, the first information subset satisfies a preset first condition and comprises that the state of the EPB module or the state of the Auto Hold module is an activated state.
15. The apparatus of claim 12,
the first set of information includes: brake pedal opening, grade, and first vehicle speed;
the first information set meeting a preset first condition comprises the following steps: the brake pedal opening is greater than a second opening threshold, the grade is less than a second grade threshold, and the first vehicle speed is less than a first vehicle speed threshold.
16. The apparatus of claim 12, further comprising:
the second acquisition unit is used for acquiring the current first vehicle speed and gradient of the vehicle;
the first processing unit is further configured to, when it is determined that the first remaining power is smaller than a preset power threshold, the shift lever position is a parking P/neutral N, the gradient is smaller than a third gradient threshold, and the first vehicle speed is smaller than a second vehicle speed threshold, start the charging mode to control charging of the battery, and maintain the power of the battery.
17. The apparatus according to any one of claims 12-16, further comprising:
a third obtaining unit, configured to obtain a current second information set of the vehicle;
and the second processing unit is used for exiting the charging mode when the second information set is determined to meet a preset second condition.
18. The apparatus of claim 17,
the second set of information comprises a current second remaining amount of battery on the vehicle;
the second information set meeting a preset second condition comprises: the second remaining capacity indicates that the battery has no charging demand.
19. The apparatus of claim 17,
the second set of information includes a second vehicle speed;
the second information set meeting a preset second condition comprises: the second vehicle speed is greater than a third vehicle speed threshold.
20. The apparatus of claim 17,
the second set of information comprises: a shift lever position, a second subset of information and a third subset of information;
the second information set meeting a preset second condition comprises: the shift lever position is forward D/reverse R, the second subset of information satisfies a first sub-condition, and the third subset of information satisfies a second sub-condition.
21. The apparatus of claim 20,
the second subset of information comprises: EPB module state, Auto Hold module state, accelerator pedal opening, and grade;
the second information subset satisfying a preset first sub-condition comprises at least one of the following conditions: the EPB module state and the Auto Hold module state are both inactive states, the accelerator pedal opening is greater than a third opening threshold, and the grade is greater than a fourth grade threshold.
22. The apparatus of claim 20,
the third subset of information comprises: a second vehicle speed, a brake pedal opening, and a grade;
the third information subset satisfying a preset second sub-condition comprises at least one of the following conditions: the second vehicle speed is greater than a fourth vehicle speed threshold, the brake pedal opening is less than a fourth opening threshold, and the grade is greater than a fifth grade threshold.
23. A single-motor hybrid vehicle is characterized by comprising a charge control device, a battery and a collection device of the vehicle;
the acquisition device is used for acquiring the state information of the vehicle in the running process and sending the state information to the charging control device of the vehicle;
the charge control device of the vehicle is used for executing the method of any one of claims 1-11 to perform charge control on the battery, so that the battery can maintain the charge of the battery under the condition of low speed and low charge.
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