CN112721608A - Double-motor hybrid power system for commercial vehicle and control method - Google Patents
Double-motor hybrid power system for commercial vehicle and control method Download PDFInfo
- Publication number
- CN112721608A CN112721608A CN202110181863.3A CN202110181863A CN112721608A CN 112721608 A CN112721608 A CN 112721608A CN 202110181863 A CN202110181863 A CN 202110181863A CN 112721608 A CN112721608 A CN 112721608A
- Authority
- CN
- China
- Prior art keywords
- motor
- clutch
- driving motor
- commercial vehicle
- power
- 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.)
- Pending
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
- B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
- B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
- B60K6/26—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the motors or the generators
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
- B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
- B60K6/22—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs
- B60K6/38—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by apparatus, components or means specially adapted for HEVs characterised by the driveline clutches
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
- B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
- B60K6/42—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by the architecture of the hybrid electric vehicle
- B60K6/44—Series-parallel type
- B60K6/442—Series-parallel switching type
-
- 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
- Y02T10/62—Hybrid vehicles
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Hybrid Electric Vehicles (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention relates to a double-motor hybrid power system for a commercial vehicle and a control method, wherein the system comprises an engine, a power generation motor, a first clutch, a power distribution mechanism, an automatic gearbox, a driving motor, a second clutch, a motor controller and a storage battery; the engine is connected with the power generation motor for generating power; the power generation motor is connected with the power distribution mechanism through the first clutch; the driving motor is connected with the power distribution mechanism through a second clutch; the power generation motor, the storage battery and the driving motor are all connected with the motor controller; the power distribution mechanism is connected with the transmission mechanism through an automatic gearbox; the motor controller controls the power generation motor and the driving motor by controlling positive and negative torque instructions, and under the condition of a negative torque instruction, the automatic gearbox provides torque to the driving motor and the power generation motor through the power distribution mechanism, so that inertial braking energy generated by braking such as braking is recovered, the energy is stored in the storage battery, and the battery is ensured to be recycled.
Description
Technical Field
The invention belongs to the technical field of vehicle control, and particularly relates to a double-motor hybrid power system for a commercial vehicle and a control method.
Background
With the implementation of increasingly stringent emission regulations, more and more automobile manufacturers promote and research and develop hybrid electric vehicles, and at the present stage, the battery endurance mileage of commercial vehicles is short, so that long-distance cargo transportation of pure electric commercial vehicles cannot be met. This is a disadvantage of the prior art.
In view of the above, the present invention provides a dual-motor hybrid system for a commercial vehicle and a control method thereof; it is very necessary to solve the above-mentioned defects existing in the prior art.
Disclosure of Invention
The present invention is directed to a dual-motor hybrid system for a commercial vehicle and a control method thereof, which are designed to solve the above technical problems.
In order to achieve the purpose, the invention provides the following technical scheme:
a double-motor hybrid power system for a commercial vehicle comprises an engine, a power generation motor, a first clutch, a power distribution mechanism, an automatic gearbox, a driving motor, a second clutch, a motor controller and a storage battery;
the engine is connected with a power generation motor;
the power generation motor is connected with the power distribution mechanism through a first clutch;
the driving motor is connected with the power distribution mechanism through a second clutch;
the power generation motor, the storage battery and the driving motor are all connected with the motor controller;
the power distribution mechanism is connected with the transmission mechanism through an automatic gearbox;
the motor controller controls the generator motor and the driving motor by controlling positive and negative torque commands, the driving motor provides torque to the automatic gearbox through the power distribution mechanism under the condition of a positive torque command, and the automatic gearbox provides torque to the driving motor and the generator motor through the power distribution mechanism under the condition of a negative torque command.
Preferably, the hybrid power system further comprises an HCU controller, wherein the HCU controller is connected with the first clutch and the second clutch and is used for controlling the opening or closing of the first clutch and the second clutch, so that energy management and torque coordination are facilitated.
The invention also provides a control method of the double-motor hybrid power system for the commercial vehicle, which comprises the following steps:
the motor controller selectively outputs a positive torque instruction or a negative torque instruction according to the working state of the commercial vehicle;
the HCU controller controls the first clutch and the second clutch to be opened or closed according to the working state of the commercial vehicle;
the storage battery is charged or discharged according to the working state of the commercial vehicle.
Preferably, the working state of the commercial vehicle comprises a commercial vehicle starting state, an automatic gearbox gear shifting state of the commercial vehicle in a series mode, an automatic gearbox gear shifting state of the commercial vehicle in a parallel mode, a commercial vehicle deceleration or sliding state in the series mode, and a commercial vehicle deceleration or sliding state in the parallel mode.
Preferably, in a starting state of the commercial vehicle, the motor controller outputs a positive torque command to control the driving motor, the HCU controller controls the first clutch to be disconnected and the second clutch to be closed, the storage battery supplies power to the driving motor, the driving motor supplies torque required for gear shifting to the automatic transmission through the power distribution mechanism, the engine charges the storage battery through the power generation motor according to the capacity of the storage battery, and under the condition that the torque required for gear shifting is insufficient, the engine performs torque supplement through the first clutch, the power generation motor and the power distribution mechanism, and is always in a fuel economy area at the moment, so that emission regulations are met, energy conservation and environmental protection are achieved.
Preferably, the automatic gearbox of commercial vehicle shifts the state under series mode, motor controller output positive torque command control driving motor, the first clutch disconnection of HCU controller control, second clutch closure, the battery to driving motor supplies power, driving motor passes through power distribution mechanism will shift required torque and provide to automatic gearbox, the engine passes through according to the battery capacity the generator motor is right the battery charges, satisfies emission regulations, energy-concerving and environment-protective.
As preferred, the automatic gearbox of commercial car shifts the state under parallel mode, motor controller output positive torque command control driving motor, HCU controller control first clutch closure, second clutch closure, the engine passes through the generator motor and gives the battery charges, the battery supplies power to driving motor, simultaneously the engine with driving motor exports the required torque of shifting jointly, driving motor provides main power, is guaranteeing under the prerequisite of engine work in fuel economy district, the required torque of shifting is not enough partly by the engine with the generator motor supplements, satisfies emission regulations, energy-concerving and environment-protective.
Preferably, in a series mode, the HCU controller controls the engine to be closed, the motor controller outputs a negative torque command to control the driving motor, the HCU controller controls the first clutch to be opened and the second clutch to be closed, the automatic gearbox provides torque to the driving motor through the power distribution mechanism and the second clutch, the driving motor generates electricity and stores the electric energy into the storage battery, emission regulations are met, and the vehicle is energy-saving and environment-friendly.
Preferably, the HCU controller controls torque outputs of the engine and the generator motor according to a required reduction torque in a deceleration or coasting state of the commercial vehicle in the parallel mode.
The invention has the advantages that the clutch and the power distribution mechanism are arranged, so that the engine works in an economic fuel area, fuel is saved, pollution is reduced, and the automatic gearbox can supply torque to the driving motor and the generating motor through the power distribution mechanism under the condition of a negative torque instruction, recover inertial braking energy generated by braking such as braking, and store the energy into the storage battery, thereby ensuring the recycling of the battery.
In addition, the invention has reliable design principle, simple structure and very wide application prospect.
Therefore, compared with the prior art, the invention has prominent substantive features and remarkable progress, and the beneficial effects of the implementation are also obvious.
Drawings
Fig. 1 is a schematic structural diagram of a two-motor hybrid system.
Fig. 2 is a schematic diagram of the operation in the electric-only mode.
Fig. 3 is an operational diagram of the automatic gearbox shifting state of the commercial vehicle in series mode.
Fig. 4 is an operational diagram of the automatic gearbox shifting state of the commercial vehicle in parallel mode.
Fig. 5 is a power transmission diagram of the power split mechanism.
The hybrid power generation system comprises an engine 1, a power generation motor 2, a storage battery 3, a motor controller 4, a first clutch 5, a power distribution mechanism 6, a second clutch 7, a driving motor 8, an automatic gearbox 9, a transmission mechanism 10 and an HCU controller 11.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings by way of specific examples, which are illustrative of the present invention and are not limited to the following embodiments.
As shown in fig. 1, a dual-motor hybrid power system for a commercial vehicle includes an engine (1), a generator motor (2), a first clutch (5), a power distribution mechanism (6), an automatic transmission (9), a driving motor (8), a second clutch (5), a motor controller (4), and a battery (3).
The engine (1) is connected with the power generation motor (2); is adapted to generate electricity and store electric energy in said accumulator (3); the storage battery (3) is an energy storage and release device, the power generation motor (2) is a low-power motor, and the driving motor (8) is a high-power motor, so that the working requirements of the commercial vehicle in different working modes are met.
The power generation motor (2) is connected with the power distribution mechanism (6) through a first clutch (5); the first clutch (5) is suitable for separating and connecting the power generation motor (2) and the power distribution mechanism (6);
the driving motor (8) is connected with the power distribution mechanism (6) through a second clutch (7) and is suitable for driving the commercial vehicle to run; the second clutch (7) is suitable for separating and engaging the driving motor (8) and the power distribution mechanism (6); the power distribution mechanism (6) is suitable for coupling the torque of an engine (1) and the torque of a driving motor (8) and outputting the torque to an automatic gearbox (9);
the power generation motor (2), the storage battery (3) and the driving motor (8) are all connected with the motor controller (4); the motor controller (4) controls the generator motor (2) and the drive motor (8) by controlling positive and negative torque commands.
The power distribution mechanism (6) is connected with the transmission mechanism (10) through an automatic gearbox (9); the automatic Transmission (9) is an Automated Mechanical Transmission (AMT).
The motor controller (4) controls the power generation motor (2) and the driving motor (8) by controlling positive and negative torque commands, the driving motor (8) provides torque to the automatic gearbox (9) through the power distribution mechanism (6) under the condition of positive torque command, the automatic gearbox (9) provides torque to the driving motor (8) and the power generation motor (2) through the power distribution mechanism (6) under the condition of negative torque command, and inertial braking energy generated by braking and the like can be recovered and stored in the storage battery (3).
The dual-motor Hybrid power system further comprises an HCU (Hybrid Control Unit) controller (11), wherein the HCU controller (11) is connected with the first clutch (5) and the second clutch (7) and used for controlling the disconnection or the connection of the first clutch (5) and the second clutch (7), so that energy management and torque coordination are facilitated.
The invention also provides a control method of the double-motor hybrid power system for the commercial vehicle, which comprises the following steps:
the motor controller (4) selectively outputs a positive torque instruction or a negative torque instruction according to the working state of the commercial vehicle;
the HCU controller (11) controls the first clutch (5) and the second clutch (7) to be opened or closed according to the working state of the commercial vehicle;
the accumulator (3) is charged or discharged according to the working state of the commercial vehicle.
The working state of the commercial vehicle comprises a commercial vehicle starting state, an automatic gearbox gear shifting state of the commercial vehicle in a series mode, an automatic gearbox gear shifting state of the commercial vehicle in a parallel mode, a commercial vehicle speed reduction or sliding state in the series mode and a commercial vehicle speed reduction or sliding state in the parallel mode.
As shown in fig. 2, the present invention is operable in an electric-only mode, and when the second clutch (3) disengages the driving motor (8) and the power distribution mechanism (6), the torque transmission of the driving motor (8) and the power distribution mechanism (6) is interrupted, and when the two are engaged, the driving motor (8) supplies the torque to the power distribution mechanism (6); the automatic gearbox (9) obtains torque through the output shaft of power distribution mechanism (6), and the automatic gearbox (9) can be connected through modes such as gear engagement with power distribution mechanism (6) to control driving motor (8) through motor controller (4), and battery (3) as energy memory provides the electric energy for driving motor (8) and motor controller (4), and can store the electric energy that driving motor (8) produced.
In a commercial vehicle starting state, the motor controller (4) outputs a positive torque instruction to control the driving motor (8), the HCU controller (11) controls the first clutch (5) to be disconnected and the second clutch (7) to be closed, the storage battery (3) supplies power to the driving motor (8), the driving motor (8) provides torque required for gear shifting to the automatic transmission (9) through the power distribution mechanism (6), the engine (1) charges the storage battery (3) through the power generation motor (2) according to the capacity of the storage battery (3), and under the condition that the torque required for gear shifting is insufficient, the engine (1) performs torque supplement through the first clutch (5), the power generation motor (2) and the power distribution mechanism (6), and at the moment, the engine (1) is always in a fuel economy area, meets the emission regulation, saves energy and protects environment.
As shown in fig. 3, the automatic transmission of commercial car shifts the state under series mode, motor controller (4) output positive torque command control driving motor (8), HCU controller (11) control first clutch (5) disconnection, second clutch (7) closure, battery (3) to driving motor (8) power supply, driving motor (8) pass through power distribution mechanism (6) will shift required torque and provide to automatic transmission (9), engine (1) passes through according to battery (3) capacity power generation motor (2) are right battery (3) charge, satisfy the emission regulation, energy-concerving and environment-protective.
Commercial vehicle speed reduction or the state of sliding under series mode, HCU controller (11) control engine (1) are closed, motor controller (4) output negative torque command control driving motor (8), HCU controller (11) control first clutch (5) disconnection, second clutch (7) are closed, automatic transmission (9) pass through torque power distribution device (6) second clutch (7) provide to driving motor (8), driving motor (8) generate electricity to with the electric energy storage extremely in battery (3), satisfy the emission regulation, energy-concerving and environment-protective.
As shown in fig. 4, the automatic transmission of commercial vehicle shifts state under the parallel mode, motor controller (4) output positive torque command control driving motor (8), HCU controller (11) control first clutch (5) closure, second clutch (7) closure, engine (1) through generating motor (2) give battery (3) charge, battery (3) are to driving motor (8) power supply, simultaneously engine (1) with driving motor (8) output the required torque of shifting jointly, driving motor (8) provide main power, under the prerequisite of guaranteeing that engine (1) works in the fuel economy district, the required torque of shifting is insufficient partly by engine (1) with generating motor (2) supplements, satisfies the emission regulation, and is energy-concerving and environment-protective.
In a deceleration or sliding state of the commercial vehicle in the parallel mode, the HCU controller (11) controls the torque output of the engine (1) and the generator motor (2) according to the required reduction torque.
As shown in fig. 5, the power distribution mechanism (6) couples the torque of the engine (1) transmitted through the first clutch (5) and the torque of the drive motor (8) transmitted through the second clutch (7) by means of gear engagement, and similarly, the power distribution mechanism (6) transmits the coupled torque to the automatic transmission (9) by means of gear engagement, thereby completing power transmission.
The above disclosure is only for the preferred embodiments of the present invention, but the present invention is not limited thereto, and any non-inventive changes that can be made by those skilled in the art and several modifications and amendments made without departing from the principle of the present invention shall fall within the protection scope of the present invention.
Claims (9)
1. A double-motor hybrid power system for a commercial vehicle is characterized by comprising an engine, a power generation motor, a first clutch, a power distribution mechanism, an automatic gearbox, a driving motor, a second clutch, a motor controller and a storage battery;
the engine is connected with a power generation motor;
the power generation motor is connected with the power distribution mechanism through a first clutch;
the driving motor is connected with the power distribution mechanism through a second clutch;
the power generation motor, the storage battery and the driving motor are all connected with the motor controller;
the power distribution mechanism is connected with the transmission mechanism through an automatic gearbox;
the motor controller controls the generator motor and the driving motor by controlling positive and negative torque commands, the driving motor provides torque to the automatic gearbox through the power distribution mechanism under the condition of a positive torque command, and the automatic gearbox provides torque to the driving motor and the generator motor through the power distribution mechanism under the condition of a negative torque command.
2. The dual-motor hybrid system for commercial vehicles according to claim 1, further comprising an HCU controller connected to the first and second clutches for controlling the opening and closing of the first and second clutches.
3. A control method of a dual-motor hybrid power system for a commercial vehicle is characterized by comprising the following steps:
the motor controller selectively outputs a positive torque instruction or a negative torque instruction according to the working state of the commercial vehicle;
the HCU controller controls the first clutch and the second clutch to be opened or closed according to the working state of the commercial vehicle;
the storage battery is charged or discharged according to the working state of the commercial vehicle.
4. The control method of the dual-motor hybrid power system for the commercial vehicle according to claim 4, wherein the working state of the commercial vehicle comprises a starting state of the commercial vehicle, a shifting state of an automatic gearbox of the commercial vehicle in a series mode, a shifting state of an automatic gearbox of the commercial vehicle in a parallel mode, a decelerating or coasting state of the commercial vehicle in the series mode, and a decelerating or coasting state of the commercial vehicle in the parallel mode.
5. The control method of a dual-motor hybrid system for commercial vehicles according to claim 5, wherein in a starting state of a commercial vehicle, the motor controller outputs a positive torque command to control the driving motor, the HCU controller controls the first clutch to be opened and the second clutch to be closed, the storage battery supplies power to the driving motor, the driving motor supplies torque required for shifting to the automatic transmission through the power distribution mechanism, the engine charges the storage battery through the power generation motor according to the capacity of the storage battery, and in the case of insufficient torque required for shifting, the engine performs torque compensation through the first clutch, the power generation motor and the power distribution mechanism, and the engine is always in a fuel economy zone.
6. The control method of a dual-motor hybrid system for commercial vehicles according to claim 5, wherein in the shift state of an automatic transmission of a commercial vehicle in the series mode, the motor controller outputs a positive torque command to control the driving motor, the HCU controller controls the first clutch to be open and the second clutch to be closed, the storage battery supplies power to the driving motor, the driving motor supplies torque required for shifting to the automatic transmission through the power split device, and the engine charges the storage battery through the power generation motor according to the capacity of the storage battery.
7. The control method of the dual-motor hybrid power system for the commercial vehicle according to claim 5, wherein in the parallel mode, in the shift state of the automatic transmission of the commercial vehicle, the motor controller outputs a positive torque command to control the driving motor, the HCU controller controls the first clutch to be closed and the second clutch to be closed, the engine charges the storage battery through the power generation motor, the storage battery supplies power to the driving motor, the engine and the driving motor jointly output the torque required for shifting, the driving motor provides main power, and the insufficient torque required for shifting is partially supplemented by the engine and the power generation motor on the premise of ensuring that the engine works in a fuel economy zone.
8. The control method of a dual-motor hybrid system for commercial vehicles according to claim 5, wherein in a deceleration or coasting state of a commercial vehicle in the series mode, the HCU controller controls the engine to be turned off, the motor controller outputs a negative torque command to control the driving motor, the HCU controller controls the first clutch to be opened and the second clutch to be closed, the automatic transmission provides torque to the driving motor through the power split device and the second clutch, the driving motor generates power, and stores electric energy in the storage battery.
9. The control method of a dual motor hybrid system for commercial vehicles according to claim 5, wherein the HCU controller controls the torque outputs of the engine and the generator motor according to the required reduction torque in a deceleration or coasting state of the commercial vehicle in the parallel mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110181863.3A CN112721608A (en) | 2021-02-08 | 2021-02-08 | Double-motor hybrid power system for commercial vehicle and control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110181863.3A CN112721608A (en) | 2021-02-08 | 2021-02-08 | Double-motor hybrid power system for commercial vehicle and control method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112721608A true CN112721608A (en) | 2021-04-30 |
Family
ID=75596617
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110181863.3A Pending CN112721608A (en) | 2021-02-08 | 2021-02-08 | Double-motor hybrid power system for commercial vehicle and control method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112721608A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101342859A (en) * | 2007-07-09 | 2009-01-14 | 比亚迪股份有限公司 | Hybrid drive system |
| CN101683817A (en) * | 2008-09-27 | 2010-03-31 | 比亚迪股份有限公司 | Hybrid power drive system and drive method thereof |
| CN101920654A (en) * | 2009-06-17 | 2010-12-22 | 上海捷能汽车技术有限公司 | Novel double-motor and multi-clutch hybrid power system for vehicle |
| CN103344442A (en) * | 2013-07-26 | 2013-10-09 | 中国重汽集团济南动力有限公司 | Hybrid power system test bed and operating method thereof |
| JP2015033921A (en) * | 2013-08-09 | 2015-02-19 | トヨタ自動車株式会社 | Control device for hybrid vehicle |
| WO2018108053A1 (en) * | 2016-12-12 | 2018-06-21 | 郑州宇通客车股份有限公司 | Vehicle, series-parallel hybrid power system, and method for controlling hybrid power system |
-
2021
- 2021-02-08 CN CN202110181863.3A patent/CN112721608A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101342859A (en) * | 2007-07-09 | 2009-01-14 | 比亚迪股份有限公司 | Hybrid drive system |
| CN101683817A (en) * | 2008-09-27 | 2010-03-31 | 比亚迪股份有限公司 | Hybrid power drive system and drive method thereof |
| CN101920654A (en) * | 2009-06-17 | 2010-12-22 | 上海捷能汽车技术有限公司 | Novel double-motor and multi-clutch hybrid power system for vehicle |
| CN103344442A (en) * | 2013-07-26 | 2013-10-09 | 中国重汽集团济南动力有限公司 | Hybrid power system test bed and operating method thereof |
| JP2015033921A (en) * | 2013-08-09 | 2015-02-19 | トヨタ自動車株式会社 | Control device for hybrid vehicle |
| WO2018108053A1 (en) * | 2016-12-12 | 2018-06-21 | 郑州宇通客车股份有限公司 | Vehicle, series-parallel hybrid power system, and method for controlling hybrid power system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1311999C (en) | Parallel connection mixed power driving system and its driving method | |
| CN107351670B (en) | Multi-energy hybrid power energy-saving vehicle | |
| CN109733178B (en) | Multi-motor hybrid power system and control method thereof | |
| CN201208905Y (en) | Mixed power system for wharf tractor | |
| CN103072461A (en) | Dual-motor multi-mode hybrid power driving system and control method thereof | |
| CN110871780B (en) | Series-parallel hybrid electric vehicle system based on AMT and control method | |
| CN101612883B (en) | Hybrid power drive system and drive method thereof | |
| CN204055309U (en) | Single-axle parallel hybrid mechanism | |
| CN108839551B (en) | Hybrid power system and control method | |
| CN102529717A (en) | Energy-saving device of motor vehicle and motor vehicle provided with energy-saving device | |
| CN111845706B (en) | Power-split hybrid electric vehicle driving system and control method thereof | |
| CN104554241A (en) | Multi-mode relatively independent oil-electric hybrid power system and control method thereof | |
| CN201597430U (en) | Parallel hybrid power-driven system for motor vehicle | |
| CN203157693U (en) | Bi-motor multi-mode hybrid power driving system | |
| CN102358282A (en) | Method for controlling integrated transmission system of dual-motor pure electric automobile | |
| CN101311017A (en) | Hybrid power vehicle and its control method | |
| CN109747624B (en) | Start-stop control system of hybrid electric vehicle | |
| CN101559709A (en) | Special automobile dynamic distribution method | |
| CN111231966A (en) | Heavy truck power system driving mode switching control system and control method | |
| CN202283872U (en) | Multi-motor compound system for hybrid electric vehicle | |
| CN102019847A (en) | Series-parallel connection hybrid power driving system | |
| CN112537195A (en) | Hybrid electric vehicle power system and transmission method thereof | |
| WO2022089106A1 (en) | Driving device, hybrid truck driving method, and hybrid truck | |
| CN112721608A (en) | Double-motor hybrid power system for commercial vehicle and control method | |
| CN215590477U (en) | Power system applied to hybrid power commercial vehicle |
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 | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210430 |