CN106976454A - Method of supplying power to, device and motor vehicle driven by mixed power based on motor vehicle driven by mixed power - Google Patents

Abstract

A power supply method and device based on a hybrid vehicle, and the hybrid vehicle. The power supply method based on the hybrid vehicle includes: identifying a first request signal indicating to charge an external device; controlling the transmission and clutch of the hybrid vehicle to open to disconnect Open the transmission chain between the clutch and the wheel output; control the hybrid module clutch of the hybrid vehicle to engage; after the hybrid module clutch is engaged, control the engine of the hybrid vehicle to charge the high-voltage battery, And control the high-voltage battery to charge the external device through the charging interface. The power supply method and device based on the hybrid vehicle and the vehicle realize the technical effect of supplying power to external equipment in a special environment through the high-voltage battery of the hybrid vehicle and the corresponding charging interface, and the operation is simple, convenient and fast.

Description

Power supply method and device based on hybrid electric vehicle and hybrid electric vehicle

technical field

The invention relates to the field of hybrid electric vehicles, in particular to a power supply method and device based on a hybrid electric vehicle and the hybrid electric vehicle.

Background technique

With the development of economy and science and technology, cars have increasingly become a necessity for human beings in modern society. The widespread application of traditional internal combustion engine vehicles has caused a large number of environmental and human survival problems, such as air pollution, global warming, and oil depletion. In comparison, a pure electric vehicle (Electric Vehicle, EV) is an efficient, clean and safe means of transportation. However, pure electric vehicles have three major problems: short driving range, high battery cost and long charging time.

In the prior art, a hybrid electric vehicle (Hybrid Electric Vehicle, HEV) utilizes an internal combustion engine of a conventional vehicle and a motor of a pure electric vehicle (Electric Vehicle) for hybrid driving at the same time, using two driving modes of gasoline drive and electric drive. When the vehicle starts and stops, it is only driven by the motor, and the engine does not work if it does not reach a certain speed. Therefore, the engine has been kept in the best working condition, with good power and low emissions. Hybrid electric vehicles are equipped with high-voltage batteries and storage batteries. The high-voltage batteries pass through the charging port and are specifically controlled by the online charging manager to obtain energy from the grid to charge the high-voltage batteries. The high-voltage battery provides high-voltage DC power supply, and supplies 12V voltage to the traditional vehicle battery through the transformer (DC-DC) module in the power electronic unit (Power Electric Unit, PEU); at the same time, the high-voltage battery passes through the converter (DC-AC) module in the PEU , to provide 220V AC power to the hybrid motor for motor control. When the vehicle brakes, the braking energy can also be recovered to charge the high-voltage battery. Hybrid electric vehicles can reduce the demand for fossil fuels and improve fuel economy, thereby achieving the effects of energy saving, emission reduction and mitigation of the greenhouse effect. Because hybrid vehicles have the advantages of saving fuel costs and low noise, they have been gradually used in military, medical or emergency fields, and are used for transportation of goods in difficult environments.

However, in the fields of military, ambulance, emergency rescue, etc., due to the special working environment, there is no power supply device when working, and when external equipment urgently needs power supply, it brings inconvenience and danger to military, ambulance, emergency rescue, etc., which in turn affects social stability. and public safety.

Contents of the invention

The technical problem solved by the invention is how to supply power to external equipment through the hybrid vehicle.

In order to solve the above technical problems, an embodiment of the present invention provides a power supply method based on a hybrid vehicle, the power supply method based on a hybrid vehicle includes:

identifying a first request signal indicating charging of the external device;

controlling the hybrid vehicle transmission and clutch to open to disconnect the transmission chain between the clutch and a wheel output;

controlling engagement of a hybrid module clutch of the hybrid vehicle;

After the hybrid module clutch is engaged, the engine of the hybrid vehicle is controlled to charge the high-voltage battery, and the high-voltage battery is controlled to charge the external device through the charging interface.

Optionally, after identifying the first request signal, a second request signal is also generated according to the first request signal, and the step of controlling the clutch opening of the hybrid vehicle is executed based on the second request signal.

Optionally, after the clutch is opened, a third request signal is also generated, and the step of controlling the clutch engagement of the hybrid module of the hybrid vehicle is executed based on the third request signal.

Optionally, after the clutch of the hybrid module is engaged, a fourth request signal is also generated, and the step of controlling the hybrid electric motor of the hybrid vehicle to charge the high-voltage battery is executed based on the fourth request signal.

Optionally, the first request signal, the second request signal, the third request signal and the fourth request signal are transmitted through the CAN bus of the hybrid vehicle.

Optionally, when the first request signal is recognized, the engine is in an idle state.

Optionally, the charging interface is configured to match the external device.

In order to solve the above technical problems, the embodiment of the present invention also discloses a power supply device based on a hybrid vehicle, the power supply device based on a hybrid vehicle includes:

a hybrid control unit adapted to recognize a first request signal indicating charging of an external device;

a transmission control unit adapted to control the hybrid vehicle transmission and clutch to open to disconnect the transmission chain between the clutch and the wheel output;

an actuator control unit adapted to control engagement of a hybrid module clutch of said hybrid vehicle;

an engine control unit adapted to control the engine of the hybrid vehicle to charge the high-voltage battery after the clutch of the hybrid module is engaged;

The battery control unit is adapted to control the high-voltage battery to charge the external device through the charging interface.

Optionally, after the hybrid control unit recognizes the first request signal, it also generates a second request signal according to the first request signal, and the gearbox control unit controls the hybrid The powered vehicle's clutch is open.

Optionally, the gearbox control unit further generates a third request signal after the clutch is opened, and the actuator control unit controls the hybrid module clutch of the hybrid vehicle to engage based on the third request signal .

Optionally, after the clutch of the hybrid power module is engaged, the battery control unit also generates a fourth request signal, and the engine control unit controls the hybrid electric motor of the hybrid vehicle to a high voltage voltage based on the fourth request signal. battery charging.

Optionally, the charging interface is configured to match the external device.

In order to solve the above technical problems, the embodiment of the present invention also discloses a hybrid vehicle, which includes a power supply device based on the hybrid vehicle.

Compared with the prior art, the technical solutions of the embodiments of the present invention have the following beneficial effects:

In the embodiment of the present invention, by identifying the first request signal indicating to charge the external device; controlling the clutch of the transmission of the hybrid vehicle to open, so as to disconnect the transmission chain between the clutch and the output end of the wheel, so that the vehicle is in an idle state, Keep at the current position without moving; then control the hybrid module clutch of the hybrid vehicle to engage, so that the hybrid engine of the vehicle can work and provide energy for charging the battery; after the hybrid module clutch is engaged, control the The engine of the hybrid vehicle charges the high-voltage battery, and controls the high-voltage battery to charge the external equipment through the charging interface. Through the high-voltage battery of the hybrid vehicle and the corresponding charging interface, power supply for the external equipment is realized in a special environment , and the operation is simple, convenient and fast.

Description of drawings

Fig. 1 is a schematic structural diagram of a hybrid vehicle according to an embodiment of the present invention;

Fig. 2 is a flow chart of a power supply method based on a hybrid vehicle according to an embodiment of the present invention;

3 is a schematic structural diagram of a power supply device based on a hybrid vehicle according to an embodiment of the present invention;

FIG. 4 is a schematic diagram of a topology control architecture of a hybrid vehicle according to an embodiment of the present invention.

detailed description

As mentioned in the background technology, in the fields of military, ambulance, emergency rescue, etc., due to the special working environment, there is no power supply device during work, and when external equipment urgently needs power supply, it brings inconvenience and danger to military, ambulance, emergency rescue, etc. This in turn affects social stability and public safety.

In order to make the above objects, features and advantages of the present invention more comprehensible, specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

Fig. 1 is a schematic structural diagram of a hybrid vehicle according to an embodiment of the present invention.

Dual clutch transmission (Dual Clutch Transmission, DCT) is a complex system that interacts with electromechanical hydraulic systems. The power is uninterrupted during the DCT shifting process, and the fuel consumption is low. On the basis of DCT, a hybrid power module is added to form a hybrid power vehicle.

Please refer to FIG. 1 , in a DCT-based hybrid vehicle, a clutch 102 , a motor 104 , and a high-voltage battery 103 are added between an engine 101 and a DCT 105 . At the same time, the high-voltage battery 103 is connected with the motor controller through a wiring harness, and controls the motor 104 . The high-voltage battery 103 can obtain energy from the grid, or recharge itself by recovering the braking energy of the engine 101; and provide energy to the storage battery to provide power for other electrical devices in the hybrid vehicle.

It should be noted that DCT-based hybrid vehicles combine the advantages of power source and gearbox technology, and have better production inheritance, so that the investment in manufacturing and after-sales is less; With the advantage of interrupted shifting, all DCT gears can be used for driving. The hybrid vehicle mentioned in the embodiment of the present invention can not only be a hybrid vehicle based on DCT, but also can be based on a manual transmission (Manual Transmission, MT), a hydraulic automatic transmission (Automatic Transmission, AT) or a mechanical automatic transmission (Automated Manual Transmission, AMT) hybrid vehicle, which is not limited in this embodiment of the present invention.

Fig. 2 is a flowchart of a power supply method based on a hybrid vehicle according to an embodiment of the present invention.

Please refer to Figure 2, and also refer to Figure 1, the power supply methods based on hybrid electric vehicles include:

Step S201, identifying a first request signal indicating to charge an external device.

In this embodiment, when the external device is charged based on the power supply method of the hybrid vehicle, it is connected to the high-voltage battery through the charging interface of the peripheral device of the hybrid vehicle, and the charging interface is set to match the external device. At this time, the vehicle user selects the power supply function of the hybrid vehicle, and triggers a first request signal for charging the external device, and the first request signal is identified based on the power supply method of the hybrid vehicle.

Step S202, controlling the transmission and the clutch of the hybrid vehicle to open, so as to disconnect the transmission chain between the clutch and the output end of the wheels.

In this embodiment, after the first request signal is identified, a second request signal is generated according to the first request signal, and the step of controlling the clutch opening of the hybrid vehicle is executed based on the second request signal.

In a specific implementation, the second request signal controls the clutch of the transmission of the hybrid vehicle to open, so as to disconnect the transmission chain between the clutch 102 and the output end of the wheels. The second request signal controls the accelerator pedal of the hybrid vehicle to disengage the clutch from the transmission, disconnecting the transmission chain between the clutch 102 and the output end of the wheels. In this state, the transmission is separated from the wheels and cannot continue to provide power for the rotation of the wheels, and the vehicle remains in its current position to facilitate power supply operations for external devices.

Step S203, controlling the hybrid module clutch of the hybrid vehicle to engage.

In this embodiment, after the clutch is opened, a third request signal is also generated, and the step of controlling the clutch engagement of the hybrid module of the hybrid vehicle is executed based on the third request signal.

In a specific implementation, the third request signal controls the hybrid module of the hybrid vehicle to engage with the clutch. In this state, the engine 101 is in an idle state. When the engine 101 is in the idling state, the accelerator pedal is released, the engine is idling, and the engine 101 operates under no-load conditions. It only needs to overcome the frictional resistance of its internal parts and not output power externally to maintain the minimum speed of stable operation. In this case, it is convenient for the high-voltage battery 103 to recharge itself by recovering the braking energy of the engine 101 .

Step S204, after the hybrid module clutch is engaged, control the engine of the hybrid vehicle to charge the high-voltage battery, and control the high-voltage battery to charge the external device through the charging interface.

In this embodiment, after the clutch of the hybrid module is engaged, a fourth request signal is also generated, and the step of controlling the hybrid electric motor of the hybrid vehicle to charge the high-voltage battery is executed based on the fourth request signal.

In a specific implementation, the fourth request signal controls the engine of the hybrid vehicle to charge the high-voltage battery. After the high-voltage battery has energy, the high-voltage battery is controlled to charge the external device through the charging interface to provide load power.

It can be understood that, the type of the charging interface can be adaptively set and adjusted according to the type of the external device.

In this embodiment, the first request signal, the second request signal, the third request signal and the fourth request signal are transmitted through the CAN bus of the hybrid vehicle.

The embodiment of the present invention uses the hybrid electric vehicle for transporting goods in a special environment, and utilizes its characteristics of low noise and high-voltage battery, first uses the braking energy of the engine of the hybrid electric vehicle to charge the high-voltage battery, and then uses the energy stored in the high-voltage battery It is transmitted to the external device through the corresponding charging interface, which ensures the normal operation of the external device and realizes the power supply for the external device in a special environment.

Fig. 3 is a schematic structural diagram of a power supply device based on a hybrid vehicle according to an embodiment of the present invention.

Please refer to Figure 3, the power supply device based on hybrid electric vehicle includes:

The hybrid control unit 301 is adapted to recognize the first request signal indicating to charge the external device.

In this embodiment, when the external device is charged based on the power supply method of the hybrid vehicle, it is connected to the high-voltage battery through the charging interface of the peripheral device of the hybrid vehicle. The vehicle user selects the power supply function of the hybrid vehicle and triggers a first request signal for charging the external device, and the first request signal is identified based on the power supply method of the hybrid vehicle. The first request signal changes from an initial state to a triggered state, for example, from an initial 0 state to a triggered 1 state.

The transmission control unit 302 is adapted to control the transmission and the clutch of the hybrid vehicle to open, so as to disconnect the transmission chain between the clutch and the output end of the wheels.

In this embodiment, after the hybrid control unit 301 recognizes the first request signal, it also generates a second request signal according to the first request signal, and the gearbox control unit 302 controls The clutch of the hybrid vehicle is opened. The gearbox control unit 302 also generates a third request signal after the clutch is opened, and the third request signal is a charging permission flag. For example, the third request signal changes from an initial low level state to a triggered high level state, that is, changes from an initial 0 state to a triggered 1 state.

The actuator control unit 303 is adapted to control the engagement of the hybrid module clutch of the hybrid vehicle. The actuator control unit 303 controls the hybrid module clutch of the hybrid vehicle to engage based on the third request signal.

The engine control unit 304 is adapted to control the engine of the hybrid vehicle to charge the high-voltage battery after the hybrid module is engaged with the clutch.

The battery control unit 305 is adapted to control the high-voltage battery to charge the external device through the charging interface.

In this embodiment, after the clutch of the hybrid power module is engaged, the battery control unit 305 also generates a fourth request signal, and the fourth request signal is a charging request flag. The engine control unit 304 controls the hybrid electric motor of the hybrid vehicle to charge the high voltage battery based on the fourth request signal. The charging interface is configured to match the external device.

The embodiment of the present invention ensures the normal operation of the external equipment by transmitting the energy stored in the high-voltage battery of the hybrid vehicle to the external equipment, and realizes power supply for the external equipment in a special environment.

For specific implementation manners, reference may be made to the foregoing corresponding embodiments, and details are not repeated here.

FIG. 4 is a schematic diagram of a topology control architecture of a hybrid vehicle according to an embodiment of the present invention.

In this embodiment, the first request signal, the second request signal, the third request signal and the fourth request signal are transmitted through the CAN bus of the hybrid vehicle.

Please refer to Fig. 4, and refer to Fig. 1 and Fig. 3 together, on the CAN bus, include multiple control nodes: engine control unit 304 (Engine Control Unit, ECU), gearbox control unit 302 (Transmission Control Unit, TCU) and mixing Power control unit 301 (Hybrid Control Unit, HCU).

In this embodiment, the controller area network (Controller Area Network, CAN) serial communication protocol transmits data in units of messages, and the priority of the data is combined in the identifier, and the identifier with the lowest binary number has the highest priority. class. This priority cannot be changed after it is established at design time. Conflicts in the process of reading data from the bus can be resolved by bit arbitration. When multiple control nodes send data at the same time, the node data with the identifier of the lower binary number is preferentially selected. The signal on the bus keeps track of the message of the station which last obtained the bus read right. This non-destructive bit arbitration method transmits the beginning of the data on the bus before the network finally determines the data transmission. All control nodes that do not have the right to read the bus become the receiving nodes with the highest priority data and will not send data until the bus is free again.

Continuing to refer to FIG. 4 , among multiple control nodes, the engine control unit 304 controls the engine 101; the gearbox control unit 302 controls the DCT gearbox 105; , BCU) and actuator control unit 303 (Actuator Control Unit, ACU). Among them, the power electronic unit 401 controls the operation of the hybrid motor 402; the battery control unit 305 controls the charging and discharging actions of the high-voltage battery 103; the actuator control unit 303 controls the on-off of the hybrid module clutch 403 to realize the vehicle power transmission route on and off.

In a specific implementation, the hybrid control unit 301 generates a second request signal according to the first request signal after identifying the first request signal transmitted by the CAN bus indicating to charge the external device. The gearbox control unit 302 receives the second request signal transmitted through the CAN bus, and controls the clutch of the DCT gearbox 105 of the hybrid vehicle to open. After the clutch is opened, the gearbox control unit 302 generates a third request signal. The actuator control unit 303 receives the third request signal, and controls the engagement of the hybrid module clutch 403 based on the third request signal. After the hybrid module clutch 403 is engaged, the battery control unit 305 generates a fourth request signal, which is a charging request flag. The engine control unit 304 receives the fourth request signal transmitted through the CAN bus, and controls the hybrid motor of the hybrid vehicle to charge the high-voltage battery based on the fourth request signal. The battery control unit 305 controls the high-voltage battery to charge the external device through the charging interface.

For specific implementation manners, reference may be made to the foregoing corresponding embodiments, and details are not repeated here.

The embodiment of the present invention also discloses a hybrid vehicle, which includes the power supply device based on the hybrid vehicle.

Although the present invention is disclosed above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, so the protection scope of the present invention should be based on the scope defined in the claims.

Claims (13)

1. A power supply method based on a hybrid vehicle, characterized in that, comprising: identifying a first request signal indicating charging of the external device; controlling the hybrid vehicle transmission and clutch to open to disconnect the transmission chain between the clutch and a wheel output; controlling engagement of a hybrid module clutch of the hybrid vehicle; After the hybrid module clutch is engaged, the engine of the hybrid vehicle is controlled to charge the high-voltage battery, and the high-voltage battery is controlled to charge the external device through the charging interface. 2. The power supply method based on a hybrid vehicle according to claim 1, characterized in that after identifying the first request signal, a second request signal is also generated according to the first request signal to control the hybrid vehicle The step of opening the clutch is started based on the second request signal. 3. The power supply method based on a hybrid vehicle according to claim 2, characterized in that, after the clutch is opened, a third request signal is also generated, and the step of controlling the engagement of the hybrid module clutch of the hybrid vehicle is Execution is started based on the third request signal. 4. The power supply method based on a hybrid vehicle according to claim 3, characterized in that, after the hybrid module clutch is engaged, a fourth request signal is also generated to control the hybrid motor of the hybrid vehicle to a high voltage The step of charging the battery is started based on the fourth request signal. 5. The power supply method based on a hybrid vehicle according to claim 4, wherein the first request signal, the second request signal, the third request signal and the fourth request signal pass through the The CAN bus of the hybrid vehicle mentioned above is used for transmission. 6 . The power supply method based on a hybrid vehicle according to claim 1 , wherein when the first request signal is recognized, the engine is in an idle state. 7 . 7 . The power supply method based on a hybrid vehicle according to claim 1 , wherein the charging interface is configured to match with the external device. 8 . 8. A power supply device based on a hybrid vehicle, characterized in that it comprises: a hybrid control unit adapted to recognize a first request signal indicating charging of an external device; a transmission control unit adapted to control the hybrid vehicle transmission and clutch to open to disconnect the transmission chain between the clutch and the wheel output; an actuator control unit adapted to control engagement of a hybrid module clutch of said hybrid vehicle; an engine control unit adapted to control the engine of the hybrid vehicle to charge the high-voltage battery after the clutch of the hybrid module is engaged; The battery control unit is adapted to control the high-voltage battery to charge the external device through the charging interface. 9. The power supply device based on a hybrid vehicle according to claim 8, characterized in that, after the hybrid control unit recognizes the first request signal, it also generates a second request signal according to the first request signal, The transmission control unit controls the clutch opening of the hybrid vehicle based on the second request signal. 10. The power supply device based on a hybrid vehicle according to claim 9, characterized in that, after the clutch is opened, the transmission control unit also generates a third request signal, and the actuator control unit generates a third request signal based on the The third request signal controls engagement of a hybrid module clutch of the hybrid vehicle. 11. The power supply device based on a hybrid vehicle according to claim 10, characterized in that, after the clutch of the hybrid module is engaged, the battery control unit also generates a fourth request signal, and the engine control unit generates a fourth request signal based on the The fourth request signal controls the hybrid electric motor of the hybrid vehicle to charge the high voltage battery. 12 . The power supply device based on a hybrid vehicle according to claim 8 , wherein the charging interface is configured to match with the external device. 13 . 13. A hybrid vehicle, characterized by comprising the hybrid vehicle-based power supply device according to any one of claims 8 to 12.