CN113335288A - Vehicle power recovery method and system and vehicle - Google Patents
Vehicle power recovery method and system and vehicle Download PDFInfo
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- CN113335288A CN113335288A CN202110899081.3A CN202110899081A CN113335288A CN 113335288 A CN113335288 A CN 113335288A CN 202110899081 A CN202110899081 A CN 202110899081A CN 113335288 A CN113335288 A CN 113335288A
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- 238000011084 recovery Methods 0.000 title claims abstract description 44
- 230000001172 regenerating effect Effects 0.000 claims abstract description 74
- 238000006243 chemical reaction Methods 0.000 claims abstract description 29
- 230000000979 retarding effect Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 6
- 238000004590 computer program Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 230000006870 function Effects 0.000 description 4
- 238000004146 energy storage Methods 0.000 description 2
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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
- B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units
- B60W30/18—Propelling the vehicle
- B60W30/18009—Propelling the vehicle related to particular drive situations
- B60W30/18109—Braking
- B60W30/18127—Regenerative braking
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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
- B60L7/00—Electrodynamic brake systems for vehicles in general
- B60L7/10—Dynamic electric regenerative braking
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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
- B60W40/105—Speed
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- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The embodiment of the application provides a power recovery method and system for a vehicle and the vehicle, which belong to the technical field of automatic control of the vehicle, and specifically comprise the following steps: the sensor subsystem acquires the current wheel speed; the accelerator subsystem acquires a target vehicle body speed; the control subsystem determines that the vehicle reaches a target rear wheel torque corresponding to the target vehicle body speed according to the current wheel speed and the target vehicle body speed; under the condition that the target rear wheel torque is the deceleration torque, judging whether the high-voltage battery subsystem can store the electric energy obtained by the conversion of the regenerative braking mode; when the high-voltage battery subsystem can store the electric energy obtained by the conversion of the regenerative braking mode, the vehicle is decelerated by adopting the regenerative braking mode; the high-voltage battery subsystem stores the electric energy obtained by the regenerative braking deceleration conversion. By the scheme, the opportunity of adopting the regenerative braking mode is accurately judged, the energy recovery effect is improved, and the electric energy obtained by converting the regenerative braking mode can be stored.
Description
Technical Field
The application relates to the technical field of vehicle automatic control, in particular to a power recovery method and system for a vehicle and the vehicle.
Background
With the continuous development of vehicle technology, a plurality of deceleration technologies are provided to ensure the safety of the deceleration braking process of the vehicle, and the deceleration of the vehicle is realized by controlling the magnitude of kinetic energy. In the prior art, in order to improve the utilization rate of energy, a power recovery system is generally installed on a vehicle. The existing power recovery scheme has the problem of low energy recovery effect.
Disclosure of Invention
In view of the above, embodiments of the present disclosure provide a power recovery method and system for a vehicle, and a vehicle, which at least partially solve the problems in the prior art.
In a first aspect, an embodiment of the present disclosure provides a power recovery method for a vehicle, applied to the vehicle, the method including:
the sensor subsystem acquires the current wheel speed;
the accelerator subsystem acquires a target vehicle body speed;
the control subsystem determines that the vehicle reaches a target rear wheel torque corresponding to the target vehicle body speed according to the current wheel speed and the target vehicle body speed; under the condition that the target rear wheel torque is a deceleration torque, judging whether the high-voltage battery subsystem can store electric energy obtained by conversion of a regenerative braking mode; when the high-voltage battery subsystem can store electric energy obtained by conversion of a regenerative braking mode, the regenerative braking mode is adopted to decelerate the vehicle;
and the high-voltage battery subsystem stores the electric energy obtained by the regenerative braking deceleration conversion.
Optionally, the method includes:
and when the high-voltage battery subsystem cannot store the electric energy converted from the regenerative braking mode, the control subsystem decelerates the vehicle by adopting a friction braking mode or a reverse torque braking mode of the motor.
Optionally, the control subsystem decelerates the vehicle using the regenerative braking mode, including:
the control subsystem inputs a regenerative braking mode signal and the target rear wheel torque into a rear wheel drive subsystem;
and the rear wheel driving subsystem adjusts the torque of the rear wheel of the vehicle to the target rear wheel torque and converts kinetic energy in the deceleration process into electric energy through an inverter according to the regenerative braking mode signal.
Optionally, the determining, by the control subsystem, that the vehicle reaches the target rear wheel torque corresponding to the target vehicle body speed according to the current wheel speed and the target vehicle body speed includes:
the control subsystem calculates a difference between the current wheel speed and the target body speed, and determines a target rear wheel torque required by the vehicle to reach the target body speed according to the difference;
the method further comprises the following steps:
the control subsystem determines the target rear wheel torque as a deceleration torque when the direction of the target rear wheel torque is opposite to the direction of the current torque of the rear wheel.
Optionally, the acquiring, by the throttle subsystem, a target vehicle body speed includes:
the throttle subsystem receives a target body speed input by a driver.
In a second aspect, the disclosed embodiments provide a power recovery system for a vehicle, applied to the vehicle, the system including:
a sensor subsystem for acquiring a current wheel speed;
the accelerator subsystem is used for acquiring the target vehicle body speed;
the control subsystem is used for determining that the vehicle reaches a target rear wheel torque corresponding to the target vehicle body speed according to the current wheel speed and the target vehicle body speed, and judging whether the high-voltage battery subsystem can store electric energy obtained by conversion of a regenerative braking mode under the condition that the target rear wheel torque is a deceleration torque; if so, decelerating the vehicle by adopting the regenerative braking mode;
and the high-voltage battery subsystem is used for storing the electric energy obtained by the regenerative braking deceleration conversion.
Optionally, the control subsystem is further configured to decelerate the vehicle in a friction braking mode or a reverse torque braking mode of the electric machine when the high-voltage battery subsystem cannot store the electric energy converted from the regenerative braking mode.
Optionally, the control subsystem is further configured to input a regenerative braking mode signal and the deceleration torque to the rear wheel drive subsystem;
and the rear wheel driving subsystem is also used for adjusting the torque of the rear wheels of the vehicle to the target rear wheel torque and converting kinetic energy in the deceleration process into electric energy through an inverter according to the regenerative braking mode signal.
Optionally, the control subsystem is further configured to calculate a difference between the current wheel speed and the target vehicle body speed, and determine a target rear wheel torque required by the vehicle to reach the target vehicle body speed according to the difference; determining the target rear wheel torque as a deceleration torque when the direction of the target rear wheel torque is opposite to the direction of the current torque of the rear wheel.
In a third aspect, the disclosed embodiments also provide a vehicle including the power recovery system of the vehicle provided in the second aspect.
In the power recovery method and system for the vehicle and the vehicle in the embodiment of the disclosure, the sensor subsystem acquires the current wheel speed; the accelerator subsystem acquires a target vehicle body speed; the control subsystem determines that the vehicle reaches a target rear wheel torque corresponding to the target vehicle body speed according to the current wheel speed and the target vehicle body speed; under the condition that the target rear wheel torque is a deceleration torque, judging whether the high-voltage battery subsystem can store electric energy obtained by conversion of a regenerative braking mode; when the high-voltage battery subsystem can store electric energy obtained by conversion of a regenerative braking mode, the regenerative braking mode is adopted to decelerate the vehicle; and the high-voltage battery subsystem stores the electric energy obtained by the regenerative braking deceleration conversion. According to the scheme, when the high-voltage battery subsystem can store the electric energy obtained by the conversion of the regenerative braking mode, the regenerative braking mode is adopted to decelerate the vehicle, the electric energy obtained by the conversion of the regenerative braking deceleration is stored through the high-voltage battery subsystem, the opportunity of adopting the regenerative braking mode is accurately judged, the energy recovery effect is improved, the electric energy obtained by the conversion of the regenerative braking mode can be stored, and the subsequent use is facilitated.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly described 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 schematic flow chart of a power recovery method for a vehicle according to an embodiment of the present disclosure;
fig. 2 is a schematic flow chart of a step S103 of a power recovery method for a vehicle according to an embodiment of the present application;
FIG. 3 is a schematic structural diagram of a power recovery system of a vehicle according to an embodiment of the present disclosure;
fig. 4 is another schematic structural diagram of a power recovery system of a vehicle according to an embodiment of the present application.
Detailed Description
The embodiments of the present application will be described in detail below with reference to the accompanying drawings.
The following description of the embodiments of the present application is provided by way of specific examples, and other advantages and effects of the present application will be readily apparent to those skilled in the art from the disclosure herein. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. The present application is capable of other and different embodiments and its several details are capable of modifications and/or changes in various respects, all without departing from the spirit of the present application. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict. 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.
It is noted that various aspects of the embodiments are described below within the scope of the appended claims. It should be apparent that the aspects described herein may be embodied in a wide variety of forms and that any specific structure and/or function described herein is merely illustrative. Based on the present application, one skilled in the art should appreciate that one aspect described herein may be implemented independently of any other aspects and that two or more of these aspects may be combined in various ways. For example, an apparatus may be implemented and/or a method practiced using any number of the aspects set forth herein. Additionally, such an apparatus may be implemented and/or such a method may be practiced using other structure and/or functionality in addition to one or more of the aspects set forth herein.
It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present application, and the drawings only show the components related to the present application rather than the number, shape and size of the components in actual implementation, and the type, amount and ratio of the components in actual implementation may be changed arbitrarily, and the layout of the components may be more complicated.
In addition, in the following description, specific details are provided to facilitate a thorough understanding of the examples. However, it will be understood by those skilled in the art that the aspects may be practiced without these specific details.
The embodiment of the application provides a power recovery method of a vehicle.
Referring to fig. 1, an embodiment of the present disclosure provides a power recovery method for a vehicle, including:
in step S101, the sensor subsystem acquires a current wheel speed.
In this embodiment, the power recovery method for a vehicle may be applied to a power recovery system for a vehicle, where the power recovery system for a vehicle includes a sensor subsystem, an accelerator subsystem, a control subsystem, a high-voltage battery subsystem, and a rear-wheel drive subsystem, and the control subsystem is connected to the sensor subsystem, the accelerator subsystem, the high-voltage battery subsystem, and the rear-wheel drive subsystem, respectively.
In the embodiment, the vehicle is provided with a sensor subsystem, the sensor subsystem comprises a plurality of sensors for collecting vehicle state information, and the vehicle state information can be collected in real time through the sensors. In particular, the sensor subsystem may include a speed sensor by which a current wheel speed may be collected, for example, the current wheel speed is 20 kilometers per hour.
Step S102, the accelerator subsystem acquires a target vehicle body speed.
Optionally, step S102 includes: the throttle subsystem receives a target body speed input by a driver.
In this embodiment, when the driver needs to adjust the speed of the vehicle, the driver inputs a target vehicle body speed to be adjusted through the accelerator subsystem, inputs the target vehicle body speed into the control subsystem, and performs deceleration or acceleration processing according to the current wheel speed and the target vehicle body speed, and during the deceleration processing, executes the power recovery process. For example, when the target vehicle body speed is 10 km/hr and the current wheel speed is 20 km/hr, the control subsystem performs the deceleration process and simultaneously performs the power recovery process.
Step S103, a control subsystem determines that the vehicle reaches a target rear wheel torque corresponding to the target vehicle body speed according to the current wheel speed and the target vehicle body speed; under the condition that the target rear wheel torque is a deceleration torque, judging whether the high-voltage battery subsystem can store electric energy obtained by conversion of a regenerative braking mode; and when the high-voltage battery subsystem can store the electric energy converted from the regenerative braking mode, the vehicle is decelerated by adopting the regenerative braking mode.
For example, if the target vehicle body speed is 30 km/h and the current wheel speed is 40 km/h, the control subsystem determines that the target rear wheel torque corresponding to the deceleration of 40 km/h to 30 km/h is X nm, which is the deceleration torque, where X is the torque value calculated according to the actual situation. And judging whether the electric energy storage capacity of the high-voltage battery subsystem can also store the electric energy obtained by converting the regenerative braking mode in the process of reducing the speed of 40 kilometers per hour to 30 kilometers per hour, and if so, reducing the speed of the vehicle by adopting the regenerative braking mode.
Optionally, referring to fig. 2, the control subsystem in step 103 decelerates the vehicle using the regenerative braking mode, including:
step 1031, inputting a regenerative braking mode signal and the target rear wheel torque into a rear wheel drive subsystem by the control subsystem;
and 1032, adjusting the torque of the rear wheels of the vehicle to the target rear wheel torque by the rear wheel driving subsystem, and converting the kinetic energy in the deceleration process into electric energy through an inverter according to the regenerative braking mode signal.
Therefore, the control subsystem can adopt the regenerative braking mode to decelerate the vehicle, and convert the kinetic energy in the deceleration process into electric energy, thereby achieving the effect of recycling the energy.
Optionally, the step S103 of determining, by the control subsystem according to the current wheel speed and the target vehicle body speed, that the vehicle reaches the target rear wheel torque corresponding to the target vehicle body speed includes:
the control subsystem calculates a difference between the current wheel speed and the target body speed, and determines a target rear wheel torque required by the vehicle to reach the target body speed according to the difference;
the method further comprises the following steps:
the control subsystem determines the target rear wheel torque as a deceleration torque when the direction of the target rear wheel torque is opposite to the direction of the current torque of the rear wheel.
For example, if the target vehicle body speed is 20 km/h, and the current wheel speed is 40 km/h, the control subsystem calculates the difference between the current wheel speed and the target vehicle body speed to be 20 km/h, and determines the target rear wheel torque required for the vehicle to reach the target vehicle body speed of 20 km/h according to the difference of 20 km/h, and the target rear wheel torque required for the target vehicle body speed of 20 km/h is a deceleration torque since the target rear wheel torque required for the target vehicle body speed of 20 km/h is opposite to the direction of the current torque.
And step S104, the high-voltage battery subsystem stores the electric energy obtained by the regenerative braking deceleration conversion.
In this embodiment, the electric energy storage capacity of the high-voltage battery subsystem has a preset upper limit, and when the stored electric energy reaches the preset upper limit, the electric energy obtained by the regenerative braking deceleration conversion cannot be stored, so that it is necessary to determine whether the electric energy converted by the regenerative braking mode can be stored in the high-voltage battery subsystem in step S103, so as to avoid that the electric energy converted by the regenerative braking mode cannot be stored and the electric energy in the regenerative braking mode is wasted.
Optionally, the power recovery method for a vehicle according to this embodiment further includes:
and when the high-voltage battery subsystem cannot store the electric energy converted from the regenerative braking mode, the control subsystem decelerates the vehicle by adopting a friction braking mode or a reverse torque braking mode of the motor.
Therefore, when the high-voltage battery subsystem cannot store the electric energy obtained by converting the regenerative braking mode, the friction braking mode or the reverse torque braking mode of the motor is adopted to decelerate the vehicle, other braking modes are provided, the vehicle can conveniently complete the braking process, and the safe driving of the vehicle is ensured.
In the power recovery method of the vehicle in the embodiment of the disclosure, a sensor subsystem and a system acquire the current wheel speed; the accelerator subsystem acquires a target vehicle body speed; the control subsystem determines that the vehicle reaches a target rear wheel torque corresponding to the target vehicle body speed according to the current wheel speed and the target vehicle body speed; under the condition that the target rear wheel torque is a deceleration torque, judging whether the high-voltage battery subsystem can store electric energy obtained by conversion of a regenerative braking mode; when the high-voltage battery subsystem can store electric energy obtained by conversion of a regenerative braking mode, the regenerative braking mode is adopted to decelerate the vehicle; and the high-voltage battery subsystem stores the electric energy obtained by the regenerative braking deceleration conversion. According to the scheme, when the high-voltage battery subsystem can store the electric energy obtained by the conversion of the regenerative braking mode, the regenerative braking mode is adopted to decelerate the vehicle, the electric energy obtained by the conversion of the regenerative braking deceleration is stored through the high-voltage battery subsystem, the opportunity of adopting the regenerative braking mode is accurately judged, the energy recovery effect is improved, the electric energy obtained by the conversion of the regenerative braking mode can be stored, and the subsequent use is facilitated.
In correspondence with the above method embodiment, referring to fig. 3, the disclosed embodiment also provides a power recovery system 300 of a vehicle, the system comprising:
a sensor subsystem 301 for obtaining current wheel speed;
a throttle subsystem 302 for acquiring a target body speed;
the control subsystem 303 is configured to determine, according to the current wheel speed and the target vehicle body speed, that the vehicle reaches a target rear wheel torque corresponding to the target vehicle body speed, and determine whether the high-voltage battery subsystem 304 can store electric energy obtained by switching the regenerative braking mode when the target rear wheel torque is a deceleration torque; if so, decelerating the vehicle by adopting the regenerative braking mode;
the high-voltage battery subsystem 304 is configured to store electric energy obtained by the regenerative braking deceleration conversion.
Optionally, the control subsystem 303 is further configured to decelerate the vehicle in a friction braking mode or a reverse torque braking mode of the electric machine when the high-voltage battery subsystem cannot store the electric energy converted from the regenerative braking mode.
Optionally, referring to fig. 4, the control subsystem 303 is further configured to input a regenerative braking mode signal and the retarding torque to a rear wheel drive subsystem 305;
the rear wheel drive subsystem 305 is further configured to adjust the torque of the rear wheels of the vehicle to the target rear wheel torque, and convert kinetic energy during deceleration into electric energy through an inverter according to the regenerative braking mode signal.
Optionally, the control subsystem 303 is further configured to calculate a difference between the current wheel speed and the target vehicle body speed, and determine a target rear wheel torque required by the vehicle to reach the target vehicle body speed according to the difference; determining the target rear wheel torque as a deceleration torque when the direction of the target rear wheel torque is opposite to the direction of the current torque of the rear wheel.
The power recovery system of the vehicle provided in this embodiment can correspondingly execute the content in the above embodiment of the power recovery method of the vehicle, and the details of the parts not described in this embodiment refer to the content described in the above embodiment of the method, and are not described again here.
The embodiment of the disclosure also provides a vehicle, which comprises the power recovery system of the vehicle provided in the embodiment.
The vehicle of the present embodiment may correspondingly execute the contents in the foregoing method embodiments, and details of the parts of the present embodiment that are not described in detail refer to the contents described in the foregoing method embodiments, which are not described again here.
Embodiments of the present disclosure also provide a computer-readable storage medium storing a computer program that, when run on a processor, performs the method of power recovery of a vehicle in the aforementioned method embodiments.
The computer-readable storage medium provided in the embodiments of the present disclosure may correspondingly execute the contents in the above method embodiments, and details of the parts not described in detail in this embodiment refer to the contents described in the above method embodiments, which are not described herein again.
The disclosed embodiments also provide a computer program product comprising a computer program stored on a non-transitory computer readable storage medium, the computer program comprising program instructions that, when executed by a computer, cause the computer to perform the method of power recovery of a vehicle in the aforementioned method embodiments.
The computer program product of the present embodiment may correspondingly execute the contents of the embodiment of the power recovery method for a vehicle, and details of the embodiment are not described herein with reference to the contents described in the embodiment of the method.
It should be noted that the computer readable medium in the present disclosure can be a computer readable signal medium or a computer readable storage medium or any combination of the two. A computer readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the foregoing. More specific examples of the computer readable storage medium may include, but are not limited to: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In the present disclosure, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device. The computer readable medium may be embodied in an electronic device; or may be present alone without being incorporated into the electronic device.
Computer program code for carrying out operations for aspects of the present disclosure may be written in any combination of one or more programming languages, including an object oriented programming language such as java, Smalltalk, C + +, and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or the connection may be made to an external computer (for example, through the Internet using an Internet service provider).
The flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to various embodiments of the present disclosure. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
The units described in the embodiments of the present disclosure may be implemented by software or hardware. Where the name of an element does not in some cases constitute a limitation on the element itself.
It should be understood that portions of the present disclosure may be implemented in hardware, software, firmware, or a combination thereof.
The above description is only for the specific embodiments of the present disclosure, but the scope of the present disclosure is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present disclosure should be covered within the scope of the present disclosure. Therefore, the protection scope of the present disclosure shall be subject to the protection scope of the claims.
Claims (10)
1. A power recovery method for a vehicle, characterized by being applied to a vehicle, the method comprising:
the sensor subsystem acquires the current wheel speed;
the accelerator subsystem acquires a target vehicle body speed;
the control subsystem determines that the vehicle reaches a target rear wheel torque corresponding to the target vehicle body speed according to the current wheel speed and the target vehicle body speed; under the condition that the target rear wheel torque is a deceleration torque, judging whether the high-voltage battery subsystem can store electric energy obtained by conversion of a regenerative braking mode; when the high-voltage battery subsystem can store electric energy obtained by conversion of a regenerative braking mode, the regenerative braking mode is adopted to decelerate the vehicle;
and the high-voltage battery subsystem stores the electric energy obtained by the regenerative braking deceleration conversion.
2. The power recovery method of a vehicle according to claim 1, characterized by comprising:
and when the high-voltage battery subsystem cannot store the electric energy converted from the regenerative braking mode, the control subsystem decelerates the vehicle by adopting a friction braking mode or a reverse torque braking mode of the motor.
3. A method of power recovery for a vehicle as set forth in claim 2 wherein said control subsystem decelerates the vehicle in said regenerative braking mode comprising:
the control subsystem inputs a regenerative braking mode signal and the target rear wheel torque into a rear wheel drive subsystem;
and the rear wheel driving subsystem adjusts the torque of the rear wheel of the vehicle to the target rear wheel torque and converts kinetic energy in the deceleration process into electric energy through an inverter according to the regenerative braking mode signal.
4. The method of claim 3, wherein the control subsystem determines that the vehicle reaches a target rear wheel torque corresponding to the target body speed based on the current wheel speed and the target body speed, comprising:
the control subsystem calculates a difference between the current wheel speed and the target body speed, and determines a target rear wheel torque required by the vehicle to reach the target body speed according to the difference;
the method further comprises the following steps:
the control subsystem determines the target rear wheel torque as a deceleration torque when the direction of the target rear wheel torque is opposite to the direction of the current torque of the rear wheel.
5. The method of power recovery for a vehicle of claim 4, wherein the throttle subsystem obtaining a target body speed comprises:
the throttle subsystem receives a target body speed input by a driver.
6. A power recovery system for a vehicle, applied to the vehicle, the system comprising:
a sensor subsystem for acquiring a current wheel speed;
the accelerator subsystem is used for acquiring the target vehicle body speed;
the control subsystem is used for determining that the vehicle reaches a target rear wheel torque corresponding to the target vehicle body speed according to the current wheel speed and the target vehicle body speed, and judging whether the high-voltage battery subsystem can store electric energy obtained by conversion of a regenerative braking mode under the condition that the target rear wheel torque is a deceleration torque; if so, decelerating the vehicle by adopting the regenerative braking mode;
and the high-voltage battery subsystem is used for storing the electric energy obtained by the regenerative braking deceleration conversion.
7. The vehicle power recovery system of claim 6, wherein the control subsystem is further configured to decelerate the vehicle using a friction braking mode or a reverse torque braking mode of the electric machine when the high voltage battery subsystem is unable to store electrical energy converted from the regenerative braking mode.
8. The vehicle power recovery system of claim 7, wherein the control subsystem is further configured to input a regenerative braking mode signal and the retarding torque to a rear wheel drive subsystem;
and the rear wheel driving subsystem is also used for adjusting the torque of the rear wheels of the vehicle to the target rear wheel torque and converting kinetic energy in the deceleration process into electric energy through an inverter according to the regenerative braking mode signal.
9. The vehicle power recovery system of claim 8, wherein the control subsystem is further configured to calculate a difference between the current wheel speed and the target body speed, and determine a target rear wheel torque required for the vehicle to reach the target body speed based on the difference; determining the target rear wheel torque as a deceleration torque when the direction of the target rear wheel torque is opposite to the direction of the current torque of the rear wheel.
10. A vehicle characterized by comprising a power recovery system of the vehicle of any one of claims 6 to 9.
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| CN202110899081.3A CN113335288A (en) | 2021-08-06 | 2021-08-06 | Vehicle power recovery method and system and vehicle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115195485A (en) * | 2022-09-13 | 2022-10-18 | 达芬骑动力科技(北京)有限公司 | Vehicle power recovery method and system and vehicle |
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| WO2024055841A1 (en) * | 2022-09-13 | 2024-03-21 | 达芬骑动力科技(北京)有限公司 | Vehicle power recovery method and system, and vehicle |
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