CN112297859A - Vehicle energy regeneration system, energy regeneration control method based on vehicle energy regeneration system and storage medium - Google Patents
Vehicle energy regeneration system, energy regeneration control method based on vehicle energy regeneration system and storage medium Download PDFInfo
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- CN112297859A CN112297859A CN202011193192.4A CN202011193192A CN112297859A CN 112297859 A CN112297859 A CN 112297859A CN 202011193192 A CN202011193192 A CN 202011193192A CN 112297859 A CN112297859 A CN 112297859A
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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
- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
- B60T13/24—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being gaseous
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
- B60T17/18—Safety devices; Monitoring
- B60T17/22—Devices for monitoring or checking brake systems; Signal devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T2270/00—Further aspects of brake control systems not otherwise provided for
- B60T2270/60—Regenerative braking
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- Transportation (AREA)
- Mechanical Engineering (AREA)
- Power Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Regulating Braking Force (AREA)
Abstract
The invention discloses a vehicle energy regeneration system, an energy regeneration control method based on the vehicle energy regeneration system and a storage medium, wherein the energy regeneration control method comprises the following steps: the device comprises at least four wheel-side motors, a control device, a processor, an energy storage device and an energy consumption device; the wheel-side motors are arranged near the wheels, each wheel-side motor corresponds to one wheel, and the wheel-side motors are connected with the energy storage device through the energy storage loop; the control device is connected with the processor through a control loop, and the control device is also arranged in a gas loop of an inflating device and a gas braking device in the vehicle, wherein the inflating device is connected with the gas braking device; the processor is connected with the energy storage device through a control loop and is also connected with the energy consumption device through the control loop; the energy consumption device is connected with the inflation device through the gas loop. The system can be used for braking each wheel independently, so that the resource waste caused by unified braking of all wheels is avoided, and the energy recovery effect is improved.
Description
Technical Field
The present invention relates to the field of vehicle technologies, and in particular, to a vehicle energy regeneration system, an energy regeneration control method based on the vehicle energy regeneration system, and a storage medium.
Background
At present, the application of regenerative braking in the development of new energy vehicles is becoming common, wherein the regenerative braking means that energy is recovered by electric energy generated by a motor during braking when the motor is used for braking the vehicle, so as to realize the effect of energy regeneration. Generally, in a pneumatic-driven brake system, it is a main research direction to adjust the air pressure of a vehicle brake chamber to achieve the recovery of the maximum braking energy according to the requirement of regenerative braking and the change of the braking torque of a motor.
In the conventional application of the industry, the air pressure regulating controller simultaneously integrates the function of a regenerative braking controller, and during the regenerative braking process, the air pressure regulator and the brake air chamber are controlled to act, and meanwhile, the motor controller, the battery controller, the gearbox controller and the like are directly or indirectly controlled to carry out command control, so that the regenerative braking process is completed. However, in practical applications, an existing energy regeneration system of a new energy vehicle uses a motor to uniformly control all wheels in the vehicle through a linkage, but in practice, the rotation condition of each wheel is different from the actual braking requirement, and the braking process needs to be matched with the operation of an air pressure regulation controller, so that the utilization efficiency of vehicle resources is low in the energy regeneration process, and the energy regeneration effect is affected.
Disclosure of Invention
In this summary, concepts in a simplified form are introduced that are further described in the detailed description. This summary of the invention is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter.
To at least partially solve the above problems, the present invention provides a vehicle energy regeneration system, an energy regeneration control method based on the vehicle energy regeneration system, and a storage medium, including:
the device comprises at least four wheel-side motors, a control device, a processor, an energy storage device and an energy consumption device;
the wheel-side motors are arranged near wheels, each wheel-side motor corresponds to one wheel and is connected with the processor through a control loop so as to execute braking operation on the wheels to recover energy after receiving an energy recovery instruction of the processor, and the wheel-side motors are connected with the energy storage device through an energy storage loop;
the control device is connected with the processor through a control loop and used for feeding back a braking signal to the processor after an external force is applied to the control device, and the control device is also arranged in a gas loop of an inflating device and a gas braking device in the vehicle and used for controlling the gas braking device to switch between an operating state and a closing state by adjusting the gas flow rate in the gas loop;
the processor is connected with the energy storage device through a control loop so as to receive energy storage information fed back by the energy storage device, and is also connected with the energy consumption device through the control loop and used for controlling the energy consumption device to operate according to a preset energy consumption state;
the energy consumption device is connected with the inflation device through a gas loop.
Preferably, the control device includes:
the pressure detection module and the transmission module;
the pressure detection module is used for collecting pressure applied by a user and converting the pressure into pressure information;
the transmission module is used for transmitting the pressure information to a processor.
Preferably, the processor is configured to determine a braking control mode according to the pressure information and a preset braking control strategy; wherein the brake control modes include an electric brake mode, a gas brake mode, and a hybrid brake mode;
the processor is further used for generating the energy recovery instruction and sending the energy recovery instruction to the wheel-side motor through a control loop when the braking mode is the electronic braking mode; the wheel side motor controls the corresponding wheel according to the energy recovery instruction;
the control device is also used for adjusting the opening of the valve when the braking mode is a gas braking mode or a hybrid braking mode so as to control the pneumatic control equipment to a braking state through a gas circuit.
Preferably, the energy storage device further includes: the battery and the energy storage detection module;
the battery is connected with the energy storage detection module;
the battery is used for receiving energy from the wheel-side motor through an energy storage loop;
the energy storage detection module is used for detecting whether the real-time state of the battery is abnormal or not and sending energy storage information with an alarm signal to the processor when the real-time state of the battery is detected to be abnormal.
Preferably, the energy storage device is further connected to the energy consumption device, and the energy storage device is configured to output energy to the energy consumption device after receiving the energy storage stopping command fed back by the processor.
Preferably, the wheel-side motor is further connected with the energy consumption device;
the processor is used for controlling the wheel edge motor to stop transmitting energy to the energy storage device through the energy storage loop through a control loop when the alarm signal is received;
and/or;
and the processor is also used for controlling the wheel edge motor to transmit energy to the energy consumption device through a control loop when the alarm signal is received.
Preferably, the energy consuming device comprises: the system comprises an engine, a starting and power generation integrated motor and an exhaust butterfly valve;
the starting and power generation integrated motor is respectively connected with the processor and the engine, the starting and power generation integrated motor starts to operate through received energy when receiving a control signal sent by the processor, and simultaneously drives the engine to operate so as to facilitate the engine to perform energy consumption as a load, and the exhaust butterfly valve is switched to a closed state when the engine operates as the load.
In addition, the present invention also provides an energy regeneration control method based on a vehicle energy regeneration system, the vehicle energy regeneration system being as described in any one of the preceding claims, comprising:
receiving pressure information collected by a control device, and determining a brake control mode corresponding to the pressure information from a preset brake control strategy, wherein the pressure information is obtained by a built-in pressure sensor when a user applies pressure to the control device, and the brake control strategy comprises brake control modes corresponding to different pressure ranges;
according to the brake control mode and the mode brake corresponding relation, executing the brake operation corresponding to the brake mode, wherein the mode brake relation comprises each brake mode and the corresponding brake operation;
energy recovery is performed by the braking operation.
Preferably, the preset brake control strategy comprises a first pressure parameter and a second pressure parameter, wherein the second pressure parameter is greater than the first pressure parameter;
the determining a brake control mode corresponding to the pressure information from a preset brake control strategy includes:
when the pressure information is smaller than the first pressure parameter, determining that the brake control mode is an electronic brake mode;
determining that the braking control mode is gas braking when the pressure information is between the first pressure parameter and the second pressure parameter;
when the pressure information exceeds the second pressure parameter, determining that the brake control mode is hybrid braking.
Also, the present invention provides a computer readable storage medium having stored thereon machine executable instructions which, when invoked and executed by a processor, cause the processor to execute the energy regeneration control method of any one of the preceding claims.
Compared with the prior art, the invention at least comprises the following beneficial effects:
the invention provides a vehicle energy regeneration system, which mainly comprises: the device comprises at least four wheel-side motors, a control device, a processor, an energy storage device and an energy consumption device; the wheel-side motors are arranged near wheels, each wheel-side motor corresponds to one wheel and is connected with the processor through a control loop so as to execute braking operation on the wheels to recover energy after receiving an energy recovery instruction of the processor, and the wheel-side motors are connected with the energy storage device through an energy storage loop; the control device is connected with the processor through a control loop and used for feeding back a braking signal to the processor after an external force is applied to the control device, and the control device is also arranged in a gas loop of an inflating device and a gas braking device in the vehicle and used for controlling the gas braking device to switch between an operating state and a closing state by adjusting the gas flow rate in the gas loop; the processor is connected with the energy storage device through a control loop so as to receive energy storage information fed back by the energy storage device, and is also connected with the energy consumption device through the control loop and used for controlling the energy consumption device to operate according to a preset energy consumption state; the energy consumption device is connected with the inflation device through a gas loop. Therefore, the four wheel-side motors are arranged to replace a single motor arranged in the prior art, so that independent braking control can be performed based on the running condition of each wheel in the subsequent braking process, the energy can be flexibly recovered in the braking control process, the problem of resource waste caused by unified braking of all wheels is avoided, and the effect of energy regeneration in braking can be improved. In addition, the system can be provided with a distributed wheel-side motor, so that the weight of the vehicle can be uniformly distributed, a large motor is not required to be specially arranged in the vehicle body, the space is saved, and the gravity center of the vehicle body can be balanced. Furthermore, the system can independently recover energy in the vehicle braking process without being integrated in the air pressure adjusting controller, so that the system can work independently, the influence caused by the cooperation of the air pressure regulator in the energy recovery process is avoided, and the energy recovery effect can be further improved.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic structural diagram of a vehicle energy regeneration system according to the present invention.
Fig. 2 is a schematic diagram of another vehicle energy regeneration system according to the present invention.
Fig. 3 is a schematic diagram of the components of a vehicle energy regeneration system according to the present invention.
Fig. 4 is a flowchart of an energy regeneration control method based on a vehicle energy regeneration system according to the present invention.
Detailed Description
The present invention is further described in detail below with reference to the drawings and examples so that those skilled in the art can practice the invention with reference to the description.
It will be understood that terms such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.
As shown in fig. 1, the present invention provides a vehicle energy regeneration system, comprising:
at least four wheel-side motors 11, a control device 12, a processor 13, an energy storage device 14 and an energy consumption device 15;
the wheel-side motors 11 are arranged near wheels, each wheel-side motor 11 corresponds to one wheel, and is connected with the processor 13 through a control circuit so as to perform braking operation on the wheels to recover energy after receiving an energy recovery instruction of the processor 13, and the wheel-side motors 11 are connected with the energy storage device 14 through an energy storage circuit;
the control device 12 is connected with the processor 13 through a control loop and used for feeding back a braking signal to the processor 13 when external force is applied, and the control device 12 is also arranged in a gas loop of an inflator in the vehicle and a gas braking device and used for controlling the gas braking device to switch between an operating state and a closed state by adjusting the gas flow rate in the gas loop;
the processor 13 is connected with the energy storage device 14 through a control loop so as to receive energy storage information fed back by the energy storage device 14, and the processor 13 is also connected with the energy consumption device 15 through a control loop and is used for controlling the energy consumption device 15 to operate according to a preset energy consumption state;
the energy consumption device 15 is connected to the inflator via a gas circuit.
The beneficial effects of the above technical scheme are that: the four wheel-side motors are arranged to replace a single integral motor arranged in the prior art, so that independent braking control can be performed based on the running condition of each wheel in the subsequent braking process, the energy can be flexibly recovered in the braking control process, the problem of resource waste caused by unified braking of all wheels is avoided, and the efficiency of energy regeneration in braking can be increased. In addition, the system can be provided with a distributed wheel-side motor, so that the weight of the vehicle can be uniformly distributed, a large motor is not required to be specially arranged in the vehicle body, the space is saved, and the gravity center of the vehicle body can be balanced. Furthermore, the system can independently recover energy in the vehicle braking process without being integrated in the air pressure adjusting controller, so that the system can work independently, the influence caused by the cooperation of the air pressure regulator in the energy recovery process is avoided, and the energy recovery effect can be further improved.
In one embodiment, as shown in fig. 2, the control device 12 includes:
a pressure detection module 121 and a transmission module 122;
the pressure detection module 121 is configured to collect pressure applied by a user and convert the pressure into pressure information;
the transmission module 122 is configured to transmit the pressure information to the processor 13.
It should be noted that, in practical application, the control device may be an electrically controlled master brake valve, and a pressure sensor for detecting pressure is provided in the electrically controlled master brake valve, so that the detection function of the pressure detection module can be realized, and the control device also has a module for performing communication with the processor, and the module is consistent with the function of the transmission module. In practical applications, of course, a user may select a suitable device according to practical situations, which is not limited herein, and any device meeting the requirements may be selected to implement the above functions in the above-described schemes without limitation.
The beneficial effects of the above technical scheme are that: after the pressure detection module converts the pressure collected by the user into the pressure information, the pressure information can be sent to the transmission module, so that the transmission module is used for transmitting the pressure information to the processor, the function of converting the pressure into the electric signal is realized, and a foundation is laid for the subsequent processor to carry out energy recovery control based on the pressure information.
In one embodiment, as shown in fig. 2, the processor 13 is configured to determine a braking control mode according to the pressure information and a preset braking control strategy; wherein the brake control modes include an electric brake mode, a gas brake mode, and a hybrid brake mode;
the processor 13 is further configured to generate the energy recovery instruction and send the energy recovery instruction to the wheel-side motor 11 through a control loop when the braking mode is the electronic braking; the wheel side motor 11 controls the corresponding wheel according to the energy recovery instruction;
the control device 12 is also configured to adjust the valve opening degree when the braking mode is the gas braking mode or the hybrid braking mode, so as to control the pneumatic control apparatus to a braking state through the gas circuit.
The beneficial effects of the above technical scheme are that: the processor is used for determining an electronic braking mode, a gas braking mode or a hybrid braking mode from preset braking control strategies according to different pressures, the processor is used for controlling the wheel-side motor to perform control braking control to recover energy when the electronic braking mode is determined, and the valve opening is adjusted to perform gas braking when the braking mode is the gas braking mode or the hybrid braking mode.
In one embodiment, as shown in fig. 2, the energy storage device 14 further comprises: a battery 141 and an energy storage detection module 142;
the battery 141 is connected with the energy storage detection module 142;
the battery 141 is used for receiving energy from the wheel-side motor 11 through an energy storage loop;
the energy storage detection module 142 is configured to detect whether the real-time state of the battery 141 is abnormal, and send energy storage information with an alarm signal to the processor 13 when the real-time state of the battery 141 is detected to be abnormal.
The beneficial effects of the above technical scheme are that: through set up battery and energy storage detection module in energy memory, can ensure to utilize energy storage detection module to detect the battery energy storage condition to when detecting out that battery real-time state appears unusually, can feed back this kind of unusual condition to the treater through the energy storage information that has alarm signal, avoided the battery overcharge condition or the battery to appear and charge the danger that brings when unusual.
In one embodiment, as shown in fig. 2, the stored energy device 14 is further connected to the energy consuming device 15, and the stored energy device 14 is configured to output energy to the energy consuming device 15 after receiving the stop energy storage command fed back by the processor 13. Specifically, in practical applications, the battery 141 in the energy storage device 14 is connected to the energy consumption device 15, and is used for outputting energy to the energy consumption device.
The beneficial effects of the above technical scheme are that: after the energy storage device receives the command of stopping energy storage, the energy in the current energy storage device is directly transmitted to the energy consumption device, so that the overflowed energy can be led out to the energy consumption device to be consumed, and the safety risk caused by continuous charging of the current energy storage device is avoided.
In one embodiment, as shown in fig. 2, the wheel-side motor 11 is further connected to the energy consumption device 15;
on one hand, the processor 13 is configured to control the wheel-side motor 11 to stop transmitting energy to the energy storage device 14 through an energy storage loop through a control loop when receiving the alarm signal;
on the other hand, the processor 13 is further configured to control the wheel-side motor 11 to transmit energy to the energy consumption device 15 through a control loop when receiving the alarm signal.
The two aspects can be set according to actual needs, namely any one aspect can be selected to be executed or two schemes can be utilized to be executed simultaneously, for example, when the processor receives an alarm signal, the energy transmission to the energy storage device is stopped while the other side controls the wheel edge motor to directly transmit energy to the energy consumption device, the energy is not required to be continuously transmitted to the energy storage device, the energy recovered in the braking process can be directly consumed, and the danger caused by the fact that the energy storage device is charged and discharged while the energy storage device is prevented.
In one embodiment, as shown in fig. 2, the energy consuming device 15 comprises: an engine 151, a starting and power generation integrated motor 152, and an exhaust butterfly valve 153;
the starting and power generation integrated motor 152 is connected to the processor 13 and the engine 151, respectively, and when receiving a control signal sent by the processor 13, the starting and power generation integrated motor starts to operate by the received energy (the energy transmitted by the wheel-side motor 11 and/or the energy transmitted by the battery 141) and drives the engine 151 to operate, so that the engine 151 consumes energy as a load, and the exhaust butterfly valve 153 is switched to a closed state when the engine 151 operates as a load.
The beneficial effects of the above technical scheme are that: the energy consumption device is composed of the engine, the starting and power generation integrated motor and the exhaust butterfly valve, and the engine, the starting and power generation integrated motor and the exhaust butterfly valve are all original devices in the vehicle, so that the system can be ensured to directly utilize the original devices in the vehicle to perform energy consumption operation, energy consumption is not required to be performed in a mode of arranging a special brake resistor in the prior art, hardware space required by the system can be saved, and equipment cost is reduced.
Further, in combination with practical application scenarios, an embodiment of the present invention further provides a schematic diagram of an apparatus composition of a vehicle energy regeneration system, which can be shown in fig. 3, where the schematic diagram includes:
1. in the process of air braking, high-pressure air can be provided by an air compressor and is divided into four relatively independent loops after passing through four-pipeline protection valves, service braking utilizes two loops, namely double-loop air braking, the pressure of a traditional double-loop air braking system is 1MPa, and all equipped brakes adopt floating caliper disc brakes (with air chambers).
2. In the process of electronic braking, a driver steps on an electronic control brake master valve, and only electronic braking is executed after the electronic control brake master valve detects external pressure and before a certain opening degree (under a certain pressure value), namely, a processor of a VCU vehicle control unit controls a wheel-side motor to brake and recover energy; when the electric control brake master valve reaches the specified opening (after a certain pressure value is exceeded), a gas brake mode or a hybrid brake mode can be determined and selected according to a preset brake control strategy, gas is used for braking and mechanical brake torque is generated to serve as a redundancy design of electronic braking, and therefore the reliability of the braking process can be improved.
3. The motor arrangement is distributed, and each wheel is provided with a motor and a controller.
4. The storage battery adopts a management system to monitor and manage the charge state, the working state and the like of the storage battery.
5. And the vehicle control unit acquires and transmits information and instructions through the CAN bus.
6. According to the braking power requirement, the vehicle control unit controls the wheel-side motor to generate power, and the energy destination generated by the wheel-side motor is judged according to parameters such as wheel-side motor feedback data, an energy storage value and bus voltage. For example, under normal conditions, when the energy storage value is less than 90%, the power battery pack is charged by the energy generated by the wheel-side motor; when the energy storage value is larger than 90%, the energy overflowing from the power generation of the wheel edge motor is consumed through the energy consumption device.
7. The exhaust braking function (namely when the energy consumption device consumes redundant energy) can be automatically started or closed according to the battery energy storage condition based on the VCU vehicle control unit, and certainly can also be controlled by a knob switch based on the user demand, and the energy consumption device comprises a starting and power generation integrated machine, an engine, an exhaust butterfly valve and the like. The electric energy transmitted to the storage battery by the wheel-side motor supplies power to the IPU generator (used as a motor at the moment), the motor drags the engine to rotate, the exhaust butterfly valve is in a closed state, and the whole engine unit consumes electric energy as a load. The energy consumption mode effectively utilizes the existing device and avoids adding energy consumption resistors.
8. The system can also be arranged in such a way that when the pedal reaches a certain opening degree, when the opening degree change rate of the electric control brake main valve exceeds a specified value and the air pressure output by the brake main valve exceeds a specified value, the whole vehicle controller enters an emergency braking state, the air pressure regulating system outputs a signal, the electric brake is stopped, a conventional braking mode is adopted, and the ABS regulating system normally plays a role.
9. The distributed electric drive can meet the requirements of power and braking strength of the overload vehicle, and the energy recovery rate is high.
Further, an embodiment of the present invention further provides an energy regeneration control method based on a vehicle energy regeneration system, where the vehicle energy regeneration system is as described in any one of the foregoing fig. 1 to 3, and the execution process of the energy regeneration control method may be as shown in fig. 4, where the method includes:
401. and receiving pressure information collected by a control device, and determining a brake control mode corresponding to the pressure information from a preset brake control strategy.
The pressure information is obtained by a built-in pressure sensor when a user applies pressure to the control device, and the brake control strategy comprises brake control modes corresponding to different pressure ranges;
402. and executing the braking operation corresponding to the braking mode according to the braking control mode and the mode braking corresponding relation.
The mode braking relation comprises each braking mode and corresponding braking operation;
403. energy recovery is performed by the braking operation.
In the above scheme, by acquiring the pressure information and determining the corresponding brake control mode from the preset brake control strategy, it can be ensured that the corresponding brake mode is selected according to the real-time pressure condition, and then the corresponding brake operation can be determined through each different brake mode, so that the corresponding brake behavior can be executed based on different pressures applied by the user, and the accuracy of the brake effect is improved.
In a specific implementation process of the method, the preset brake control strategy comprises a first pressure parameter and a second pressure parameter, wherein the second pressure parameter is greater than the first pressure parameter;
in the foregoing step, the determining the brake control mode corresponding to the pressure information from the preset brake control strategy may be specifically performed in the following manner:
when the pressure information is smaller than the first pressure parameter, determining that the brake control mode is an electronic brake mode;
determining that the braking control mode is gas braking when the pressure information is between the first pressure parameter and the second pressure parameter;
when the pressure information exceeds the second pressure parameter, determining that the brake control mode is hybrid braking.
Therefore, after the user applies pressure, the acquired pressure information can be compared with the interval formed by the first pressure parameter and the second pressure parameter, and the actual corresponding braking mode is determined according to the comparison result, so that the automatic selection function of the braking mode required by the user is executed in a quantitative mode, and the accuracy of the corresponding braking mode in the energy recovery process is improved.
Further, the mode braking correspondence relationship includes a first braking operation corresponding to the electronic braking mode, a gas braking mode and a second braking operation corresponding to the electronic braking mode, and a hybrid braking mode and a third braking operation corresponding to the hybrid braking mode;
wherein the first braking operation includes controlling a wheel-side motor to perform a braking operation and recovering energy; the second braking operation includes controlling the gas braking device to perform a braking operation; the third braking operation includes controlling the gas braking device to perform a braking operation, and controlling the wheel-side motor to perform a braking operation and recover energy. The realization of corresponding braking operation can be ensured by setting different braking operations after different braking modes are determined, and the function of automatically selecting automatic operation is realized.
Furthermore, embodiments of the present invention also provide a computer-readable storage medium storing machine-executable instructions that, when invoked and executed by a processor, cause the processor to execute the energy regeneration control method based on the vehicle energy regeneration system according to any one of the preceding claims.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
While embodiments of the invention have been disclosed above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable in various fields of endeavor to which the invention pertains, and further modifications may readily be made by those skilled in the art, it being understood that the invention is not limited to the details shown and described herein without departing from the general concept defined by the appended claims and their equivalents.
Claims (10)
1. A vehicle energy regeneration system, comprising:
the device comprises at least four wheel-side motors, a control device, a processor, an energy storage device and an energy consumption device;
the wheel-side motors are arranged near wheels, each wheel-side motor corresponds to one wheel and is connected with the processor through a control loop so as to execute braking operation on the wheels to recover energy after receiving an energy recovery instruction of the processor, and the wheel-side motors are connected with the energy storage device through an energy storage loop;
the control device is connected with the processor through a control loop and used for feeding back a braking signal to the processor after an external force is applied to the control device, and the control device is also arranged in a gas loop of an inflating device and a gas braking device in the vehicle and used for controlling the gas braking device to switch between an operating state and a closing state by adjusting the gas flow rate in the gas loop;
the processor is connected with the energy storage device through a control loop so as to receive energy storage information fed back by the energy storage device, and is also connected with the energy consumption device through the control loop and used for controlling the energy consumption device to operate according to a preset energy consumption state;
the energy consumption device is connected with the inflation device through a gas loop.
2. The vehicle energy regeneration system of claim 1, wherein the control device comprises:
the pressure detection module and the transmission module;
the pressure detection module is used for collecting pressure applied by a user and converting the pressure into pressure information;
the transmission module is used for transmitting the pressure information to a processor.
3. The vehicle energy regeneration system of claim 2, wherein the processor is configured to determine a braking control mode based on the pressure information and a predetermined braking control strategy; wherein the brake control modes include an electric brake mode, a gas brake mode, and a hybrid brake mode;
the processor is further used for generating the energy recovery instruction and sending the energy recovery instruction to the wheel-side motor through a control loop when the braking mode is the electronic braking mode; the wheel side motor controls the corresponding wheel according to the energy recovery instruction;
the control device is also used for adjusting the opening of the valve when the braking mode is a gas braking mode or a hybrid braking mode so as to control the pneumatic control equipment to a braking state through a gas circuit.
4. The vehicle energy regeneration system of claim 1, wherein said energy storage device further comprises: the battery and the energy storage detection module;
the battery is connected with the energy storage detection module;
the battery is used for receiving energy from the wheel-side motor through an energy storage loop;
the energy storage detection module is used for detecting whether the real-time state of the battery is abnormal or not and sending energy storage information with an alarm signal to the processor when the real-time state of the battery is detected to be abnormal.
5. The vehicle energy regeneration system of claim 4, wherein the energy storage device is further coupled to the energy consuming device, and the energy storage device is configured to output energy to the energy consuming device upon receiving a stop energy storage command from the processor.
6. The vehicle energy regeneration system of claim 4 or 5, wherein the wheel-side electric machine is further connected to the energy consuming device;
the processor is used for controlling the wheel edge motor to stop transmitting energy to the energy storage device through the energy storage loop through a control loop when the alarm signal is received;
and/or;
and the processor is also used for controlling the wheel edge motor to transmit energy to the energy consumption device through a control loop when the alarm signal is received.
7. The vehicle energy regeneration system of claim 1, wherein the energy consuming device comprises: the system comprises an engine, a starting and power generation integrated motor and an exhaust butterfly valve;
the starting and power generation integrated motor is respectively connected with the processor and the engine, the starting and power generation integrated motor starts to operate through received energy when receiving a control signal sent by the processor, and simultaneously drives the engine to operate so as to facilitate the engine to perform energy consumption as a load, and the exhaust butterfly valve is switched to a closed state when the engine operates as the load.
8. An energy regeneration control method based on a vehicle energy regeneration system according to any one of claims 1 to 7, characterized by comprising:
receiving pressure information collected by a control device, and determining a brake control mode corresponding to the pressure information from a preset brake control strategy, wherein the pressure information is obtained by a built-in pressure sensor when a user applies pressure to the control device, and the brake control strategy comprises brake control modes corresponding to different pressure ranges;
according to the brake control mode and the mode brake corresponding relation, executing the brake operation corresponding to the brake mode, wherein the mode brake relation comprises each brake mode and the corresponding brake operation;
energy recovery is performed by the braking operation.
9. The energy regeneration control method according to claim 8, wherein the preset brake control strategy includes a first pressure parameter and a second pressure parameter, wherein the second pressure parameter is greater than the first pressure parameter;
the determining a brake control mode corresponding to the pressure information from a preset brake control strategy includes:
when the pressure information is smaller than the first pressure parameter, determining that the brake control mode is an electronic brake mode;
determining that the braking control mode is gas braking when the pressure information is between the first pressure parameter and the second pressure parameter;
when the pressure information exceeds the second pressure parameter, determining that the brake control mode is hybrid braking.
10. A computer readable storage medium having stored thereon machine executable instructions which, when invoked and executed by a processor, cause the processor to execute the method of claim 8 or 9.
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| CN202011193192.4A CN112297859A (en) | 2020-10-30 | 2020-10-30 | Vehicle energy regeneration system, energy regeneration control method based on vehicle energy regeneration system and storage medium |
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| CN202011193192.4A CN112297859A (en) | 2020-10-30 | 2020-10-30 | Vehicle energy regeneration system, energy regeneration control method based on vehicle energy regeneration system and storage medium |
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