CN109760524B - Hybrid vehicle and control method thereof - Google Patents
Hybrid vehicle and control method thereof Download PDFInfo
- Publication number
- CN109760524B CN109760524B CN201910078379.0A CN201910078379A CN109760524B CN 109760524 B CN109760524 B CN 109760524B CN 201910078379 A CN201910078379 A CN 201910078379A CN 109760524 B CN109760524 B CN 109760524B
- Authority
- CN
- China
- Prior art keywords
- power
- electric
- range extender
- enabling
- coupling device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
-
- 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
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
-
- 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
- Y02T10/72—Electric energy management in electromobility
-
- 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
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/14—Plug-in electric vehicles
Landscapes
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention discloses a hybrid vehicle, comprising: a power battery system; a range extender system; the electric driving system is electrically connected with the power battery system and the range extender system respectively and can drive the vehicle to move by using electric energy; and an electrical power coupling device for effecting current control between the power battery system, the range extender system, and the electrical drive system. The embodiment of the invention can reduce the complexity of the power system of the hybrid power vehicle and correspondingly improve the energy utilization efficiency of the vehicle.
Description
Technical Field
The invention relates to the field of engineering vehicles, in particular to a hybrid vehicle and a control method thereof.
Background
With the increasingly strict requirements of people on environmental protection, the development of low-emission and low-pollution electric automobiles is imperative. However, since no breakthrough progress is made in the power battery technology at present, the battery module is difficult to miniaturize, and the development of the pure electric vehicle is limited by short endurance mileage and long charging time. At the moment, the gasoline-electric hybrid vehicle combines the existing internal combustion engine of the vehicle and an energy storage device (mainly a power battery or a super capacitor) with a certain capacity in a corresponding control mode, so that the vehicle has lower oil consumption and higher energy efficiency, and is increasingly favored by people.
The existing power schemes of the oil-electricity hybrid electric vehicle are mainly divided into two modes, one mode is a double-motor mechanical coupling mode, namely, a motor used by a range extender system is mechanically coupled with a motor driven by a power battery through a planetary row structure, the power coupling mode has high finished vehicle processing cost due to the fact that a coupler of a mechanical structure is needed, the size of a power system is large, the finished vehicle is inconvenient to arrange, and along with the change of the rotating speed of the range extender, the efficiency of an engine and the economical efficiency of fuel oil cannot be guaranteed, and the overall efficiency is low. And secondly, the power battery is often in an alternative charging and discharging working state by adopting a mode that the range extender system is connected with the power battery system in series to drive the motor, the service life of the power battery is easily influenced, and the power battery cannot be charged in time in a pure electric mode of the vehicle, so that the endurance mileage of the vehicle is reduced.
In addition, for the engineering vehicle, due to various driving operation scenes and large load change range of the vehicle, the related oil-electric hybrid electric vehicle is difficult to meet the energy requirement of the engineering vehicle, and cannot provide sufficient power in extreme scenes such as climbing and heavy load of the engineering vehicle.
Disclosure of Invention
At least one object of the present invention is to provide a hybrid vehicle and a control method thereof, which can reduce the complexity of a hybrid vehicle powertrain and accordingly improve the energy utilization efficiency of the vehicle. The technical effects that can be produced by the preferred technical scheme in the technical schemes provided by the invention are described in detail in the following.
In order to achieve the purpose, the invention provides the following technical scheme:
the present invention provides a hybrid vehicle including: a power battery system; a range extender system; the electric driving system is electrically connected with the power battery system and the range extender system respectively and can drive the vehicle to move by using electric energy; and an electrical power coupling device for effecting current control between the power battery system, the range extender system, and the electrical drive system.
As an optimization of any one of the technical solutions or any one of the optimized technical solutions provided in the foregoing or the following of the present invention, the electric power coupling device includes: the first coupler is arranged between the power battery system and the electric drive system and can control the size and the direction of current between the power battery system and the electric drive system.
As an optimization of any one of the technical solutions or any one of the optimized technical solutions provided in the foregoing or the following of the present invention, the electric power coupling device includes: the second coupler is arranged between the range extender system and the power battery system and can control the magnitude and the direction of current between the range extender system and the power battery system.
As an optimization of any one of the technical solutions or any one of the optimized technical solutions provided in the foregoing or the following paragraphs, the first coupler is further disposed between the range extender system and the power battery system, and is capable of controlling the magnitude and direction of the current between the range extender system and the power battery system.
As an optimization of any one of the technical solutions or any one of the optimized technical solutions provided in the foregoing or the following paragraphs, the first coupler can adjust the ratio of the electric power of the power battery system and the range extender system by adjusting the coupling electric power of the first coupler.
As an optimization of any one of the technical solutions provided in the foregoing or in the following or any one of the optimized technical solutions of the present invention, the range extender system outputs electric energy at a constant voltage, and the first coupler controls the power battery system to be in a charging state or a discharging state by controlling a direction of its own current.
As an optimization of any one of the technical solutions or any one of the optimized technical solutions provided in the foregoing or the following of the present invention, the hybrid vehicle includes: and the relay is arranged between the electric power coupling device and the range extender system and is used for controlling the on-off of a circuit between the electric power coupling device and the range extender system.
As an optimization of any one of the technical solutions or any one of the optimized technical solutions provided in the foregoing or the following of the present invention, the hybrid vehicle includes: a vehicle control unit VCU; the power battery system includes: the battery pack comprises a battery pack and a battery management unit BMS capable of reporting the residual capacity VOC and fault information of the battery pack; the range extender system comprises: the system comprises an engine, a generator in power connection with the engine, and a range extender system control unit RCU capable of controlling starting and stopping of the engine and output power of the engine; the electric drive system includes: the driving motor control unit MCU is used for reporting the torque of the driving motor; the electric power coupling device includes: an electrical power coupler, and a coupling controller CCU capable of controlling a coupling current of the electrical power coupler; the BMS, the RCU, the MCU and the CCU are all in communication connection with the VCU.
As an optimization of any one of the technical solutions or any one of the optimized technical solutions provided in the foregoing or the following paragraphs, the generator is an electric-power-generation all-in-one machine, and the power battery system can supply power to the electric-power-generation all-in-one machine so that the engine has an initial rotation speed.
A control method of a hybrid vehicle as set forth above, the control method comprising: measuring an electric drive torque of the electric drive system and a residual capacity VOC of the battery system; and controlling the range extender system, the electric drive system and the electric power coupling device to be in different set working conditions according to the electric drive torque and the VOC, so that the hybrid electric vehicle is in different working modes.
As an optimization of any one of the technical solutions or any one of the optimized technical solutions provided in the foregoing or the following of the present invention, the control method includes: and when the electric driving torque is lower than a first set torque and the VOC is lower than a first set value, enabling the range extender system to work in a first set working condition, and enabling the electric power coupling device to be in a first coupling working condition, so that the hybrid vehicle is in a driving charging mode.
As an optimization of any one of the technical solutions or any one of the optimized technical solutions provided in the foregoing or the following of the present invention, the control method includes: when the VOC is higher than a second set value, enabling the range extender system to be in a second set working condition and enabling the electric power coupling device to be in a second coupling working condition, and therefore enabling the hybrid vehicle to be in an electric driving mode; wherein the second set value is lower than the first set value.
As an optimization of any one of the technical solutions or any one of the optimized technical solutions provided in the foregoing or the following of the present invention, the control method includes: when the electric driving torque is higher than a first set torque and the VOC is higher than a second set value, enabling the range extender system to work in a first set working condition and enabling the electric power coupling device to be in a third coupling working condition, and therefore enabling the hybrid vehicle to be in a first hybrid driving mode; wherein the second set value is lower than the first set value.
As an optimization of any one of the technical solutions or any one of the optimized technical solutions provided in the foregoing or the following of the present invention, the control method includes: when the VOC is higher than a second set value and the electric driving torque is higher than a second set torque, enabling the range extender system to work in a second set working condition and enabling the electric power coupling device to be in a third coupling working condition, and therefore enabling the hybrid vehicle to be in a second hybrid driving mode; wherein the second set torque is greater than the first set torque, and the second set value is lower than the first set value.
As an optimization of any one of the technical solutions provided in the foregoing or the following paragraphs or any one of the optimized technical solutions, when the electric power coupling device is in the second coupling operating condition, the range extender system is disconnected from the electric circuit of the battery system.
As an optimization of any one of the technical solutions provided in the foregoing or the following paragraphs or any one of the optimized technical solutions, when the electric power coupling device is in the third coupling operating condition, the range extender system is disconnected from the electric circuit of the battery system.
As an optimization of any one of the technical solutions or any one of the optimized technical solutions provided in the foregoing or the following of the present invention, the control method includes: when the VOC is lower than a second set value, enabling the electric power coupling device to be in a first coupling working condition, the range extender system to be in a first set working condition and the electric drive system to be out of work, and accordingly enabling the hybrid vehicle to be in a parking charging mode; wherein the second set value is lower than the first set value.
As an optimization of any one of the technical solutions or any one of the optimized technical solutions provided in the foregoing or the following of the present invention, the control method includes: and under the braking state of the hybrid power vehicle, enabling the electric drive system to be in a power generation state and enabling the electric power coupling device to be in a first coupling working condition, so that the braking energy of the vehicle is recovered to the power battery system.
As an optimization of any one of the technical solutions or any one of the optimized technical solutions provided in the foregoing or the following of the present invention, the control method includes: and before the range extender system and the electric power coupling device are in the working state, enabling the driving motor to enter an enabling state.
As an optimization of any one of the technical solutions or any one of the optimized technical solutions provided in the foregoing or the following of the present invention, the control method includes: providing a selectable working mode for a driver according to the information reported by the BMS and the MCU, so that the driver can select the working mode independently; and when the working mode selected by the driver independently does not meet the set VOC and electric driving torque requirements, warning information is sent out.
Based on the technical scheme, the embodiment of the invention can reduce the complexity of the hybrid power wheel power system and correspondingly improve the energy utilization efficiency of the vehicle.
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 application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:
FIG. 1 is a schematic block diagram of a hybrid vehicle system according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a hybrid vehicle system according to another embodiment of the present invention.
Detailed Description
The contents of the present invention and the points of distinction between the present invention and the prior art can be understood with reference to the accompanying drawings and the text. The invention will now be described in further detail, including the preferred embodiments, with reference to the accompanying drawings, in which some alternative embodiments of the invention are shown.
It should be noted that: any technical features and any technical solutions in the present embodiment are one or more of various optional technical features or optional technical solutions, and for the sake of brevity, this document cannot exhaustively enumerate all the alternative technical features and alternative technical solutions of the present invention, and is also not convenient for each embodiment of the technical features to emphasize it as one of various optional embodiments, so those skilled in the art should know that: any technical means provided by the invention can be replaced or any two or more technical means or technical characteristics provided by the invention can be combined with each other to obtain a new technical scheme.
Any technical features and any technical solutions in the present embodiment do not limit the scope of the present invention, and the scope of the present invention should include any alternative technical solutions that can be conceived by those skilled in the art without inventive efforts and new technical solutions that can be obtained by those skilled in the art by combining any two or more technical means or technical features provided by the present invention with each other.
An embodiment of the present invention provides a hybrid vehicle, including: a power battery system; a range extender system; the electric driving system is electrically connected with the power battery system and the range extender system respectively and can drive the vehicle to move by using electric energy; and an electrical power coupling device for effecting current control between the power battery system, the range extender system, and the electrical drive system.
The power battery system is a power source for providing a power source for the hybrid vehicle, and is therefore different from a starting battery for supplying power when an automobile engine is started. The power battery mainly comprises various storage batteries, such as a lead-acid storage battery, a lithium iron phosphate storage battery and the like, and can be repeatedly charged or discharged in different working periods so as to meet the functional requirements of the power battery under various running working conditions of the hybrid vehicle.
The range extender system is an additional energy component which is additionally arranged on the electric automobile for the driving mileage of the electric automobile. The range extender system is capable of powering the hybrid vehicle directly from electrical energy, for example in the form of a battery. The range extender system can also adopt other energy sources to convert the energy into electric energy and has the function of the hybrid power vehicle, for example, a solar panel can be adopted to convert solar energy into electric energy; a combination of an engine and a generator may also be used to convert chemical energy in the fuel into electrical energy. The engine can burn fuel oil, such as kerosene or diesel oil, so as to obtain larger heat value and lower cost, and can also burn natural gas, so as to be more beneficial to environmental protection.
The electric drive system is electrically connected to the power battery system and the range extender system and is used for converting electric energy into mechanical energy for movement of the hybrid vehicle. Compared with the traditional automobile engine, the electric drive system does not produce additional pollution and emission in the process of energy conversion, and is more favorable for relieving the pollution of vehicle emission to the environment and the harm to the health of vehicle drivers and other people who may suck automobile exhaust. In addition, for engineering vehicles, the electric drive system is used for replacing a traditional automobile engine, so that the noise generated in the vehicle movement and operation process can be reduced to a great extent, the vibration among mechanical parts is reduced, and the construction environment is optimized.
The electric power coupling device is used for realizing current distribution among the power battery system, the range extender system and the electric drive system, is a coupling mode based on electric power, and compared with the traditional mechanical coupling mode, changes a complex planetary gear set transmission mode into the comprehensive control of an electric connection and electric power coupling device, thereby not only greatly reducing the complexity of the power system in the transmission aspect, but also enabling the power system of the hybrid power vehicle to have various different energy transmission directions, and the characteristics and the corresponding technical effects are discussed in detail below.
In particular, the electric power coupling device makes it no longer possible to limit the power battery system, the range extender system and the electric drive system individually to the fact that the power battery system and the range extender system each supply the electric drive system in a fixed ratio, but also to assume a more flexible supply ratio and a current flow direction adapted to different operating conditions of the vehicle.
Therefore, the electric power coupling device provided by the invention is also different from a one-way coupler used by a related hybrid vehicle, so that the service life of a power battery system is not reduced due to the fact that the power battery system is not in an alternate charging and discharging process, and the power battery system can be controlled by the electric power coupling device to be in a charging state or a discharging state by selecting one of the power battery system and the power battery system under a certain specific working condition of the hybrid vehicle. And for example, when the power battery system is in a discharge state, the power battery system can supply power to the electric drive system to improve the torque of the electric drive system, can also supply power to the range extender system to stably start the range extender system, and can also supply power to the electric drive system and the range extender system simultaneously to realize different functional requirements simultaneously.
As can be seen, the operating state in which the power battery is charged or discharged may correspond to a plurality of operating states of the hybrid vehicle. Therefore, under the control of the electric power coupling device, the power battery system can work in a charging state or a discharging state in a longer period, which is beneficial to improving the working life of the power battery and slowing down the attenuation of the use capacity of the power battery.
As an optimization of any one of the technical solutions or any one of the optimized technical solutions provided in the foregoing or the following of the present invention, the electric power coupling device includes: the first coupler is arranged between the power battery system and the electric drive system and can control the size and the direction of current between the power battery system and the electric drive system.
In order to control the magnitude of the current between the power battery system and the electric drive system, the first coupler can directly change the magnitude and the direction of the current on the circuit through various components such as a resistor, a capacitor or an internal power supply, and can also change the magnitude and the direction of the current on the circuit by adjusting the voltage between the power battery system and the electric drive system. Additionally, the first coupler may use a relay to control the switching of current between the power battery system and the electrical drive system.
Based on the above description, the first coupler can be understood as a black box structure with internal circuits and components, and all the first couplers capable of realizing the function of controlling the magnitude and direction of the current between the power battery system and the electric drive system and the specific circuit control method adopted by the first couplers are correspondingly included in the disclosure of the first couplers.
Similarly to the first coupler, as an optimization of any one of the technical solutions or any one of the optimized technical solutions provided in the foregoing or the following of the present invention, the electric power coupling device includes: the second coupler is arranged between the range extender system and the power battery system and can control the magnitude and the direction of current between the range extender system and the power battery system.
As shown in fig. 1, as an optimization of any one of the technical solutions or any one of the optimized technical solutions provided in the foregoing or the following paragraphs, the first coupler is further disposed between the range extender system and the power battery system, and is capable of controlling the magnitude and direction of the current between the range extender system and the power battery system. Namely, the first coupler is arranged between the range extender system and the electric drive system, and between the power battery system, so as to simultaneously realize the control of the magnitude and the direction of the current of the range extender system, the electric drive system and the power battery system.
Because the range extender system, the electric driving system and the power battery system form a Y-shaped circuit structure, the first coupler can be arranged on a branch close to the Y-shaped circuit of the power battery system so as to strictly control the size and direction of the current flowing through the power battery system and ensure the service life and the use safety of the power battery system. At this time, based on the principle of electric power balance satisfied by the "Y" branch, the first coupler can indirectly control the electric power of the other two branches of the "Y" circuit by controlling the power of the power battery system branch, thereby changing the magnitude and direction of the current thereof.
Correspondingly, the first coupler can also be arranged close to a branch of a Y-shaped circuit of the electric drive system or the range extender system so as to strictly control the magnitude and the direction of the current of the branch in which the first coupler is arranged. The three branches of the "Y" circuit may also be provided with electrical power couplers to enable direct control of each branch.
As an optimization of any one of the technical solutions or any one of the optimized technical solutions provided in the foregoing or the following paragraphs, the first coupler can adjust the ratio of the electric power of the power battery system and the range extender system by adjusting the coupling electric power of the first coupler.
Based on the load-determined input circuit principle, in the hybrid driving state, the electric driving system serves as a load end, the power battery and the range extender system serve as power end input ends in the hybrid driving state, and at the moment, the electric power of the other input branch can be indirectly controlled by controlling the electric power of any one input branch.
Accordingly, in the driving charging state, the electric drive system and the power battery system together form a load side, in which case the range extender system serves as the sole input, the ratio of the electrical power supplied to the electric drive system to the power battery system being adjustable via an electrical power coupling device arranged directly on the electric drive system or on a branch of the power battery system, the other branch being adjusted indirectly accordingly.
As an optimization of any one of the technical solutions provided in the foregoing or in the following or any one of the optimized technical solutions of the present invention, the range extender system outputs electric energy at a constant voltage, and the first coupler controls the power battery system to be in a charging state or a discharging state by controlling a direction of its own current.
In order to stabilize the operating state of the electric drive system, the power battery system and the range extender system, in particular the power battery system can be charged and discharged at a constant voltage in order to increase the reliability and durability of the power battery system, the range extender system outputs electric energy at a constant voltage. At the moment, the power battery system and the electric drive system have the same voltage, the whole power system of the hybrid vehicle works at constant voltage, and the working stability and the response agility of the whole power system circuit, especially the electric power coupling device, are improved.
When the range extender outputs a constant voltage within a power allowable range, the electric power coupling works in a current source mode, Vb equals Vg, namely the voltage of the electrically-driven direct current bus depends on the output voltage of the range extender, and the current corresponds to: id Ig + Ib, the electric drive power corresponds to: pd is Vg Id, and the range extender power conforms to: pg is Vg Ig, the electric power coupling power is in accordance with: pb Vg Ib.
At this time, since the electric power coupling current Ib is changed to satisfy Id-Ig in accordance with kirchhoff's current law, the range extender power is decreased when the electric power coupling power is increased, and the range extender power is increased when the electric power coupling power is decreased. When the electric power coupling power is positive, namely Id > Ig, the range extender and the power battery are merged to supply power for the driving motor. When the electric power coupling power is negative, i.e., Id < Ig, it means that the range extender is charging the battery in addition to powering the electric drive.
At this moment, the electric power coupler does not need to change the voltage to change the electric power of each branch circuit, but only needs to change the current of the branch circuit where the electric power coupler is located, so that the magnitude and the direction of the current of each branch circuit can be conveniently changed, and the magnitude and the distribution direction of the electric power of each branch circuit can be further controlled.
In order to ensure that the range extender system does not influence the power battery system when the power battery system supplies power to the electric drive system, but is in a charging state and a discharging state simultaneously to influence the service life of the battery, as an optimization of any one of the technical solutions or any optimized technical solution provided in the foregoing or in the following, the hybrid vehicle comprises: and the relay is arranged between the electric power coupling device and the range extender system and is used for controlling the on-off of a circuit between the electric power coupling device and the range extender system.
In order to achieve more flexible control of the hybrid vehicle powertrain, the hybrid vehicle comprises, as an optimization of any one of the solutions or any one of the optimized solutions provided in the foregoing or in the following paragraphs of the invention: a vehicle control unit VCU; the power battery system includes: the battery pack comprises a battery pack and a battery management unit BMS capable of reporting the residual capacity VOC and fault information of the battery pack; the range extender system comprises: the system comprises an engine, a generator in power connection with the engine, and a range extender system control unit RCU capable of controlling starting and stopping of the engine and output power of the engine; the electric drive system includes: the driving motor control unit MCU is used for reporting the torque of the driving motor; the electric power coupling device includes: an electrical power coupler, and a coupling controller CCU capable of controlling a coupling current of the electrical power coupler; the BMS, the RCU, the MCU and the CCU are all in communication connection with the VCU.
The Vehicle Control Unit VCU refers to a Vehicle-Control-Unit, the Range-extender-Control-Unit, the Battery Management Unit BMS refers to a Battery-Management-System, the drive motor Control Unit MCU refers to a motor-Control-Unit, and the coupling controller CCU refers to a Communication-Control-Unit. The operating principles and structures of the BMS, the RCU, the MCU, the CCU, and the VCU are not considered as the invention of the present application, and thus are not described herein again.
In order to realize the smooth starting of the engine in the range extender system, as any technical scheme provided in the foregoing or in the following or any optimized technical scheme provided in the invention, the generator is an electric power generation all-in-one machine, and the power battery system can supply power to the electric power generation all-in-one machine so as to enable the engine to have an initial rotating speed.
The invention also provides a control method of a hybrid vehicle as set forth in any one of the preceding claims, the control method including: measuring an electric drive torque of the electric drive system and a residual capacity VOC of the battery system; and controlling the range extender system, the electric drive system and the electric power coupling device to be in different set working conditions according to the electric drive torque and the VOC, so that the hybrid electric vehicle is in different working modes.
The control method is based on the electric drive torque of the electric drive system and the residual capacity VOC of the battery system, and can be implemented automatically by a VCU or manually selected by an operator of the hybrid vehicle through a control panel or a notification unit.
As an optimization of any one of the technical solutions or any one of the optimized technical solutions provided in the foregoing or the following of the present invention, the control method includes: when the electric driving torque is lower than a first set torque (corresponding to a better road condition) and the VOC is lower than a first set value (corresponding to the highest electric quantity), the range extender system is enabled to work in a first set working condition (corresponding to an economic electric working condition of the engine and outputting constant power), and the electric power coupling device is enabled to be in a first coupling working condition (charging the power battery and supplying power to the range extender system), so that the hybrid vehicle is enabled to be in a driving charging mode.
The first set torque corresponds to a better road condition, the first set value corresponds to the full capacity of the power battery, and at the moment, when the range extender system works at an economic point working condition, the output power of the range extender system is larger than the power required by the electric drive system, and the capacity of the power battery is not fully charged. At this time, the range extender system can be in a first set working condition, namely, the range extender system works in a state of highest fuel efficiency, and the electric power coupling device controls the range extender system to charge the power battery and supply power to the range extender electric driving system. The driving charging mode realizes the utilization of the maximum efficiency of fuel, and stores extra energy in the power battery system to meet the electric energy requirement in a large torque state under special working conditions.
For part of operation scenes, especially under the environment with strict requirements on emission and noise, the hybrid vehicle can work in a pure electric driving state, and at this time, as any technical scheme or optimization of any optimized technical scheme provided in the foregoing or the following of the invention, the control method comprises the following steps: when the VOC is higher than a second set value (corresponding to the lowest electric quantity), enabling the range extender system to be in a second set working condition (namely the engine is in a stop working condition) and enabling the electric power coupling device to be in a second coupling working condition (the electric driving system is not powered by the range extender system and the power battery system), so that the hybrid vehicle is in an electric driving mode; wherein the second set value is lower than the first set value.
Since the hybrid vehicle is required to frequently work in a heavy load or high slope working scene, the power demand of the electric drive system cannot be met by a single range extender system or a single power battery system.
At this time, as the optimization of any one of the technical solutions or any one of the optimized technical solutions provided in the foregoing or the following of the present invention, the control method includes: when the electric driving torque is higher than a first set torque (corresponding to a heavier load working condition, such as a climbing road condition) and the VOC is higher than a second set value (corresponding to the lowest electric quantity), enabling the range extender system to work in a first set working condition (namely the engine works in an economic point working condition) and enabling the electric power coupling device to be in a third coupling working condition (the power battery system discharges and the range extender system jointly supply power to the electric driving system), so that the hybrid vehicle is in a first hybrid driving mode; wherein the second set value is lower than the first set value.
Further, as an optimization of any one of the technical solutions or any one of the optimized technical solutions provided in the foregoing or the following paragraphs of the present invention, the control method includes: when the VOC is higher than a second set value (corresponding to the lowest electric quantity) and the electric driving torque is higher than a second set torque (corresponding to an extremely heavy load working condition, such as a heavy-load climbing road condition), enabling the range extender system to work at the second set working condition (namely the engine works at a rated working condition) and enabling the electric power coupling device to be in a third coupling working condition (a power battery discharges and the range extender system supplies power to the electric driving system), so that the hybrid vehicle is in a second hybrid driving mode; wherein the second set torque is greater than the first set torque, and the second set value is lower than the first set value.
The first hybrid driving mode differs from the second hybrid driving mode in whether the range extender system is operating at an economy point operating condition. Specifically, when the economic point output power of the range extender system and the output power of the power battery system can meet the requirement of the input power of the electric drive system, the range extender system can continue to work under the economic point working condition to obtain better energy utilization efficiency, and the hybrid vehicle is in the first hybrid driving mode. When the economic point output power of the range extender system and the output power of the power battery system cannot meet the requirement of the input power of the electric drive system, the output power of the range extender system is required to exceed the economic point output power to reach the rated power of the range extender system so as to meet the power requirement of the hybrid vehicle under the condition of high torque.
In order to ensure the safety of the power battery system, as an optimization of any one of the technical solutions provided in the foregoing or in the following or any one of the optimized technical solutions, when the electric power coupling device is in the second coupling operating condition, the range extender system is disconnected from the circuit of the power battery system.
Similarly, as an optimization of any one of the technical solutions provided in the foregoing or the following paragraphs or any one of the technical solutions after the optimization, when the electric power coupling device is in the third coupling operating condition (discharging), the range extender system is disconnected from the electric circuit of the power battery system.
When the power of the power battery system is seriously insufficient and will affect the normal use of the hybrid vehicle in the subsequent working scene, as any technical scheme provided in the preamble or the following description of the invention or any optimized technical scheme, the control method comprises the following steps: when the VOC is lower than a second set value (corresponding to the lowest electric quantity), enabling the electric power coupling device to be in a first coupling working condition (charging of a power battery system and power supply of a range extending system), enabling the range extending system to be in a first set working condition (namely the engine works in an economic working condition), and enabling the electric driving system to be out of work, so that the hybrid vehicle is in a parking charging mode; wherein the second set value is lower than the first set value.
As an optimization of any one of the technical solutions or any one of the optimized technical solutions provided in the foregoing or the following of the present invention, the control method includes: and under the braking state of the hybrid power vehicle, enabling the electric drive system to be in a power generation state and enabling the electric power coupling device to be in a first coupling working condition (charging of the power battery system and power supply of the range extending system), so that the braking energy of the vehicle is recovered to the power battery system.
As an optimization of any one of the technical solutions or any one of the optimized technical solutions provided in the foregoing or the following of the present invention, the control method includes: and before the range extender system and the electric power coupling device are in the working state, enabling the driving motor to enter an enabling state. The enabling state refers to that the driving motor is in a ready working state, and the driving motor which enters the enabling state in advance can enable the hybrid electric vehicle to have faster response and more flexible operation performance under the switching of multiple modes.
As an optimization of any one of the technical solutions or any one of the optimized technical solutions provided in the foregoing or the following of the present invention, the control method includes: providing a selectable working mode for a driver according to the information reported by the BMS and the MCU, so that the driver can select the working mode independently; and when the working mode selected by the driver independently does not meet the set VOC and electric driving torque requirements, warning information is sent out.
The technical solution provided by the present invention is explained in more detail below.
Parking charging operation mode: the whole vehicle stops running and is in a static state, and the power battery is charged by the power generated by the engine.
The specific working process is as follows: (1) selecting a parking charging working mode through a control panel; (2) the motor controller controls the motor to be disabled and not work; (3) the vehicle control unit gives an instruction to the power battery system, and the power battery outputs high voltage electricity; (4) the vehicle control unit gives an instruction to the electric power coupler, controls a relay output to the range extender system to be closed, and does not adjust the current value; (5) the vehicle control unit gives an instruction to the range extender system, and the RCU controls the engine to start; (6) according to the set requirements of quick charging and slow charging, the vehicle control unit calculates to obtain the output power value of the engine, and sends the information to the RCU, so as to control the working state of the engine, drive the range-extended generator to work and charge the power battery; (7) and the VCU controls the start and stop of the engine and the high-voltage power-on and power-off of the battery pack according to the SOC and the fault information of the battery pack fed back by the BMS.
The driving charging mode is as follows: when the whole vehicle runs in a better road condition, the output power of the engine at the optimal economic point is larger than the required running power and the electric quantity of the battery is lower, the output power of the engine can not only meet the requirement of the whole vehicle running, but also charge the power battery.
The specific working process is as follows: (1) selecting a driving charging working mode through a control panel; (2) the vehicle control unit gives an instruction to the power battery system, and the power battery outputs high voltage electricity; (3) the vehicle control unit gives an instruction to the electric power coupler and controls a relay output to the range extender system to be closed; (4) the vehicle control unit gives an instruction to the range extender system, and the RCU controls the engine to start; (5) the vehicle control unit sends a power request to the RCU according to the rotating speed and torque value of the optimal economic point of the engine, so that the engine runs under the optimal working condition of fuel economy and outputs constant power; (6) the electric power coupler starts a charging mode, and changes the current direction output to the battery pack by the electric power coupler, so that the output current of the range-extended generator can drive a vehicle to run and can charge the battery pack; (7) and the VCU reminds a driver to select a proper working mode according to the real-time information fed back by the BMS and the MCU.
The pure electric driving mode comprises the following steps: as a special vehicle with definite function positioning, the whole vehicle is required to have low running noise, and in the working mode, the vehicle has the advantages of high response speed, large instantaneous output power, zero emission and the like. When the electric quantity of the battery is larger than the lower limit threshold value and the running required power of the whole vehicle is smaller than the output peak power of the power battery, a driver can select the vehicle to run in the pure electric mode first.
The specific working process is as follows: (1) selecting a pure electric running working mode through a control panel; (2) the vehicle control unit gives an instruction to the power battery system, and the power battery outputs high voltage electricity; (3) the vehicle control unit gives an instruction to the electric power coupler to enable the electric power coupler to be in an enabling state; (4) the vehicle control unit controls the electric power coupler to supply power to the range extender system, and the high-voltage relay is disconnected, so that misoperation of the range extender system is avoided; (5) the vehicle control unit gives an instruction to the power supply and drive system to control the drive motor to work so as to control the vehicle to run; (6) and the VCU controls the motor speed and torque output according to the information fed back by the BMS and the MCU in real time and reminds a driver to select a proper working mode.
Hybrid driving mode: when the whole vehicle runs in a limit working condition, such as climbing a steep slope, and gets an obstacle, namely the running load power of the whole vehicle is greater than the rated output power of the engine and the peak output power of the power battery, the hybrid mode needs to be started, and the electric energy output by the two power sources is coupled through the electric power coupler to obtain enough power to drive the whole vehicle to run.
The specific working process is as follows: (1) selecting a hybrid driving working mode through a control panel; (2) the vehicle control unit gives an instruction to the power battery system, and the power battery outputs high voltage electricity; (3) the vehicle control unit gives an instruction to the electric power coupler and controls a relay output to the range extender system to be closed; (4) the vehicle control unit gives an instruction to the range extender system, and the RCU controls the engine to start; (5) the RCU controls the engine to run under a constant working condition and outputs rated power; (6) controlling the electric power coupler to be in a discharging state, and adjusting the current direction output to the battery pack to ensure that the output current of the battery pack and the output current of the range-extended generator are converged to drive the motor to operate; (7) and the vehicle control unit performs information interaction with the BMS, and the VCU reminds a driver to select a proper working mode according to the information fed back by the BMS and the MCU in real time.
A braking energy recovery mode: the kinetic energy of the vehicle is converted into electric energy to be stored in the power battery pack when the whole vehicle is braked so as to improve the energy utilization rate and the endurance mileage. Braking energy recovery is present in each driving mode. The energy recovery function can be controlled to start and stop by judging whether the motor is powered on or not when the whole vehicle is braked.
The embodiment provided by the invention can at least realize the following technical effects: the oil-electricity hybrid scheme based on electric power coupling realizes reasonable distribution of two power sources by adjusting the current direction through the electric power coupler, and has simple structure and convenient operation; the electric power coupling scheme reduces mechanical transmission parts, occupies small space, has high working efficiency and is easy to maintain; when the range extender system works, the engine always works in the optimal economic area, so that fuel is saved, and emission is reduced; the electric power coupling of two power supplies drives the motor to run, the response speed is fast, the instantaneous output power is large, and the all-terrain running power requirement of the special vehicle is met.
Any embodiment disclosed herein above is meant to disclose, unless otherwise indicated, all numerical ranges disclosed as being preferred, and any person skilled in the art would understand that: the preferred ranges are merely those values which are obvious or representative of the technical effect which can be achieved. Since the numerical values are too numerous to be exhaustive, some of the numerical values are disclosed in the present invention to illustrate the technical solutions of the present invention, and the above-mentioned numerical values should not be construed as limiting the scope of the present invention.
If the terms "first," "second," etc. are used herein to define parts, those skilled in the art will recognize that: the terms "first" and "second" are used merely to distinguish one element from another in a descriptive sense and are not intended to have a special meaning unless otherwise stated.
Meanwhile, if the invention as described above discloses or relates to parts or structural members fixedly connected to each other, the fixedly connected parts can be understood as follows, unless otherwise stated: a detachable fixed connection (for example using bolts or screws) is also understood as: non-detachable fixed connections (e.g. riveting, welding), but of course, fixed connections to each other may also be replaced by one-piece structures (e.g. manufactured integrally using a casting process) (unless it is obviously impossible to use an integral forming process).
In addition, terms used in any technical solutions disclosed in the present invention to indicate positional relationships or shapes include approximate, similar or approximate states or shapes unless otherwise stated. Any part provided by the invention can be assembled by a plurality of independent components or can be manufactured by an integral forming process.
If the terms "central," "longitudinal," "lateral," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the description of the invention, the above-described terms are intended to be based on the orientations and positional relationships shown in the drawings, and are used only for convenience in describing and simplifying the description, and do not indicate or imply that the referenced device, mechanism, component, or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the scope of the invention.
Finally, it should be noted that the above examples are only used to illustrate the technical solutions of the present invention and not to limit the same; although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art will understand that: modifications to the specific embodiments of the invention or equivalent substitutions for parts of the technical features may be made; without departing from the spirit of the present invention, it is intended to cover all aspects of the invention as defined by the appended claims.
Claims (18)
1. A hybrid vehicle, characterized by comprising:
a power battery system;
a range extender system;
the electric driving system is electrically connected with the power battery system and the range extender system respectively and can drive the vehicle to move by using electric energy; and
an electrical power coupling device for effecting current control between the power battery system, the range extender system, and the electrical drive system;
wherein the power battery system can be charged and discharged at a constant voltage, the range extender system outputs electrical energy at a constant voltage, the electrical power coupling device operates in a current source mode, and the electrical power coupling device comprises:
the first coupler is arranged between the power battery system and the electric drive system and can control the magnitude and the direction of current between the power battery system and the electric drive system; and
the second coupler is arranged between the range extender system and the power battery system and can control the magnitude and the direction of current between the range extender system and the power battery system.
2. The hybrid vehicle of claim 1, wherein the first coupling is further disposed between the range extender system and the power battery system, enabling control of the magnitude and direction of current flow between the range extender system and the power battery system.
3. The hybrid vehicle of claim 2, wherein the first coupler is capable of adjusting the ratio of the power battery system to the range extender system power by adjusting its coupled power.
4. The hybrid vehicle according to claim 2, wherein the range extender system outputs electric energy at a constant voltage, and the first coupler controls the power battery system to be in a charged state or a discharged state by controlling a direction of its current.
5. The hybrid vehicle according to claim 2, characterized by comprising:
and the relay is arranged between the electric power coupling device and the range extender system and is used for controlling the on-off of a circuit between the electric power coupling device and the range extender system.
6. The hybrid vehicle according to claim 1, characterized by comprising: a vehicle control unit VCU;
the power battery system includes: the battery pack comprises a battery pack and a battery management unit BMS capable of reporting the residual capacity VOC and fault information of the battery pack;
the range extender system comprises: the system comprises an engine, a generator in power connection with the engine, and a range extender system control unit RCU capable of controlling starting and stopping of the engine and output power;
the electric drive system includes: the driving motor control unit MCU is used for reporting the torque of the driving motor;
the electric power coupling device includes: an electrical power coupler, and a coupling controller CCU capable of controlling a coupling current of the electrical power coupler;
the BMS, the RCU, the MCU and the CCU are all in communication connection with the VCU.
7. The hybrid vehicle of claim 6, wherein the generator is an electric-generator-all-in-one machine, and the power battery system is configured to power the electric-generator-all-in-one machine such that the engine has an initial rotational speed.
8. A control method of a hybrid vehicle according to any one of claims 1 to 7, characterized by comprising:
measuring an electric drive torque of the electric drive system and a residual capacity VOC of the battery system; and
and controlling the range extender system, the electric drive system and the electric power coupling device to be in different set working conditions according to the electric drive torque and the VOC, so that the hybrid electric vehicle is in different working modes.
9. The control method of the hybrid vehicle according to claim 8, characterized by comprising:
and when the electric driving torque is lower than a first set torque and the VOC is lower than a first set value, enabling the range extender system to work in a first set working condition, and enabling the electric power coupling device to be in a first coupling working condition, so that the hybrid vehicle is in a driving charging mode.
10. The control method according to claim 9, characterized by comprising:
when the VOC is higher than a second set value, enabling the range extender system to be in a second set working condition and enabling the electric power coupling device to be in a second coupling working condition, and therefore enabling the hybrid vehicle to be in an electric driving mode;
wherein the second set value is lower than the first set value.
11. The control method according to claim 9, characterized by comprising:
when the electric driving torque is higher than a first set torque and the VOC is higher than a second set value, enabling the range extender system to work in a first set working condition and enabling the electric power coupling device to be in a third coupling working condition, and therefore enabling the hybrid vehicle to be in a first hybrid driving mode;
wherein the second set value is lower than the first set value.
12. The control method according to claim 9, characterized by comprising:
when the VOC is higher than a second set value and the electric driving torque is higher than a second set torque, enabling the range extender system to work in a second set working condition and enabling the electric power coupling device to be in a third coupling working condition, and therefore enabling the hybrid vehicle to be in a second hybrid driving mode;
wherein the second set torque is greater than the first set torque, and the second set value is lower than the first set value.
13. The control method of claim 10, wherein the range extender system is electrically disconnected from the battery system when the electrical power coupling device is in the second coupling condition.
14. The control method of any of claims 11 or 12, wherein the range extender system is disconnected from the electrical circuit of the battery system when the electrical power coupling device is in the third coupling condition.
15. The control method according to claim 9, characterized by comprising:
when the VOC is lower than a second set value, enabling the electric power coupling device to be in a first coupling working condition, the range extender system to be in a first set working condition and the electric drive system to be out of work, and accordingly enabling the hybrid vehicle to be in a parking charging mode;
wherein the second set value is lower than the first set value.
16. The control method according to any one of claims 9 to 12, characterized by comprising:
and under the braking state of the hybrid power vehicle, enabling the electric drive system to be in a power generation state and enabling the electric power coupling device to be in a first coupling working condition, so that the braking energy of the vehicle is recovered to the power battery system.
17. The control method according to any one of claims 9 to 12, characterized by comprising:
and before the range extender system and the electric power coupling device are in the working state, enabling the driving motor to enter an enabling state.
18. The control method according to claim 9, characterized by comprising:
providing a selectable working mode for a driver according to the information reported by the BMS and the MCU, so that the driver can select the working mode independently; and
and when the working mode selected by the driver independently does not meet the set VOC and electric driving torque requirements, warning information is sent out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910078379.0A CN109760524B (en) | 2019-01-28 | 2019-01-28 | Hybrid vehicle and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910078379.0A CN109760524B (en) | 2019-01-28 | 2019-01-28 | Hybrid vehicle and control method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109760524A CN109760524A (en) | 2019-05-17 |
| CN109760524B true CN109760524B (en) | 2021-10-12 |
Family
ID=66455545
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910078379.0A Active CN109760524B (en) | 2019-01-28 | 2019-01-28 | Hybrid vehicle and control method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109760524B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110562057A (en) * | 2019-09-18 | 2019-12-13 | 重庆坚峰汽车科技有限公司 | Driving system and new energy automobile |
| CN111038333B (en) * | 2019-12-25 | 2021-09-14 | 浙江吉利新能源商用车集团有限公司 | Method and system for charging storage battery of new energy automobile |
| CN111532149A (en) * | 2020-06-11 | 2020-08-14 | 汉腾新能源汽车科技有限公司 | Extended range electric vehicle power supply system and configuration method thereof |
| CN112677776B (en) * | 2021-01-13 | 2022-08-09 | 天津易众腾动力技术有限公司 | Power safety control method for range-extending system of range-extending electric automobile |
| CN115195493B (en) * | 2022-07-22 | 2024-06-18 | 合众新能源汽车股份有限公司 | Generator control method and device based on new energy vehicle |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204749840U (en) * | 2015-07-07 | 2015-11-11 | 福建中青汽车技术有限公司 | Increase form hybrid power system |
| JP6652804B2 (en) * | 2015-09-28 | 2020-02-26 | 株式会社Ｓｕｂａｒｕ | Electric motor control device |
| CN105599755B (en) * | 2016-01-18 | 2018-04-17 | 安徽安凯汽车股份有限公司 | A kind of drive shaft method for controlling torque of plug-in hybrid passenger car |
| CN207311086U (en) * | 2017-06-22 | 2018-05-04 | 同济大学 | A kind of plug-in electric-electric mixed fuel battery extended-range four-driving-force system |
| CN108382186B (en) * | 2018-02-09 | 2020-09-22 | 浙江吉利控股集团有限公司 | Series-parallel hybrid power system and vehicle working mode decision method |
| CN109017269A (en) * | 2018-06-06 | 2018-12-18 | 同济大学 | A kind of series-parallel configuration plug-in hybrid system |
-
2019
- 2019-01-28 CN CN201910078379.0A patent/CN109760524B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN109760524A (en) | 2019-05-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109760524B (en) | Hybrid vehicle and control method thereof | |
| CN101380887B (en) | Hybrid power car driving system containing driving motor work mode switching device | |
| CN104163111B (en) | Battery-driven car compound energy based on two-way DC/DC increases journey system | |
| CN2657974Y (en) | Series-parallel type power assembly of mixed power electric vehicle | |
| CN100423963C (en) | Hybrid drive system in type of multiple series connection stepless speed change | |
| US20110017532A1 (en) | A hybrid powertrain | |
| US20060250902A1 (en) | Plug-in hybrid vehicle with fast energy storage | |
| US20080234096A1 (en) | Hybrid Utility Vehicle | |
| CN101797884A (en) | Duel-clutch stepless speed change series parallel hybrid power system | |
| CN101734251A (en) | Stroke-increasing electric automobile control system and control method thereof | |
| CN101691118A (en) | Motor-assistant driving mode control method of hybrid electric vehicle | |
| CN110615000A (en) | Plug-in hybrid electric vehicle work control mode | |
| CN103909922A (en) | Vehicle control strategy of series hybrid electric vehicle | |
| US20100286856A1 (en) | Hybrid vehicle with a body builder equipment circuit and battery set | |
| CN111204233A (en) | Range-extending type electric four-wheel drive system and automobile | |
| CN211543272U (en) | Range-extending multifunctional electric service vehicle with alternating current provided by inverter | |
| CN110816309A (en) | Range-extending electric automobile and drive control method | |
| CN103129566A (en) | Track double-dynamical engineering vehicle | |
| US9083193B2 (en) | Vehicular electric power supply device and electric power supply system | |
| KR20100035265A (en) | Series hybrid driving system using flywheel and driving method | |
| CN104071017A (en) | Power balance power system of wholly electrically-driven electric automobile | |
| WO2009083750A1 (en) | Hybrid vehicle with an equipment electrical power take off | |
| CN117261571B (en) | Double-motor hybrid power system of wide dump truck and control method thereof | |
| CN215474439U (en) | Oil-electricity hybrid power system and concrete mixing vehicle | |
| CN211892872U (en) | Range-extending type electric automobile |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220726 Address after: 221004 26 Tuo Lan Shan Road, Xuzhou economic and Technological Development Zone, Jiangsu Patentee after: JIANGSU XUGONG ENGINEERING MACHINERY RESEARCH INSTITUTE Co.,Ltd. Address before: 221004 26 Tuo Lan Shan Road, Xuzhou economic and Technological Development Zone, Jiangsu Patentee before: XCMG CONSTRUCTION MACHINERY Co.,Ltd. |
|
| TR01 | Transfer of patent right |