CN113353058B

CN113353058B - Vehicle travel control system and vehicle travel control method for hybrid vehicle

Info

Publication number: CN113353058B
Application number: CN202010139897.1A
Authority: CN
Inventors: 赵江灵; 朱永明; 周文太; 李瑶瑶; 苏建云
Original assignee: Guangzhou Automobile Group Co Ltd
Current assignee: Guangzhou Automobile Group Co Ltd
Priority date: 2020-03-03
Filing date: 2020-03-03
Publication date: 2023-07-07
Anticipated expiration: 2040-03-03
Also published as: CN113353058A

Abstract

The invention discloses a vehicle running control system and a vehicle running control method of a hybrid electric vehicle. The system comprises a whole vehicle controller, a battery management system connected with a power battery, a power controller connected with a power source of a hybrid power coupling system, and a sensor assembly arranged on the hybrid power coupling system; the whole vehicle controller is connected with the sensor assembly, the battery management system and the power controller and is used for carrying out fault detection according to the sensor detection data collected by the sensor assembly and the battery detection data collected by the battery management system, controlling the power controller based on a fault detection result and running in a target working mode corresponding to the fault detection result. The system can realize that when the fault detection result is that the fault exists, the power source of the hybrid power coupling system can still be controlled by the power controller to work in the target driving mode, so that the driving safety of the hybrid power automobile is ensured, and the driving risk caused by the fault of the high-voltage system is avoided.

Description

Vehicle travel control system and vehicle travel control method for hybrid vehicle

Technical Field

The invention relates to the technical field of vehicle control, in particular to a vehicle running control system and a vehicle running control method of a hybrid electric vehicle.

Background

The conventional power system is a power transmission system mainly composed of an engine (internal combustion engine) and a transmission, a differential and a propeller shaft, and its function is to supply driving power required for driving wheels of a vehicle. The engine has a certain speed and torque range, and reaches the optimal working state in a small range, and at the moment, the fuel consumption is minimum, the harmful emission is minimum, or both the engine and the torque range are the same. However, the actual road conditions are becoming ever more varied, not only in terms of the speed of the driving wheels, but also in terms of the torque required by the driving wheels. Therefore, the realization of optimal rotation speed and torque of the internal combustion engine, namely optimal power state, and the matching of the optimal power state and the power state of the driving wheels are the primary tasks of the development of the power system.

In recent years, the generation of a motor hybrid power technology opens up a new way for realizing the power matching between an engine and a driving wheel, so that a hybrid power coupling system applying the motor hybrid power technology becomes a new direction for automobile research and development. The hybrid power coupling system is a key system of the hybrid power automobile and is used for effectively coupling and distributing a plurality of power sources on the vehicle according to the requirements of the running working conditions of the hybrid power automobile. In a hybrid electric vehicle, there are high-voltage systems such as a generator and a power battery, and when the high-voltage system fails and cannot be powered on by high-voltage power, driving safety risks are easily caused, and the safety performance of the hybrid electric vehicle is affected.

Disclosure of Invention

The embodiment of the invention provides a vehicle running control system and a vehicle running control method of a hybrid electric vehicle, which aim to solve the problem that the high-voltage system of the hybrid electric vehicle is easy to cause driving safety risk when faults occur.

The embodiment of the invention provides a vehicle running control system of a hybrid electric vehicle, which is applied between a hybrid power coupling system and a power battery, and comprises a whole vehicle controller, a battery management system connected with the power battery, a power controller connected with a power source of the hybrid power coupling system and a sensor assembly arranged on the hybrid power coupling system; the vehicle controller is connected with the sensor assembly, the battery management system and the power controller, and is used for performing fault detection according to sensor detection data acquired by the sensor assembly and battery detection data acquired by the battery management system, controlling the power controller based on a fault detection result, and running in a target working mode corresponding to the fault detection result.

Preferably, the power controller includes an engine controller connected to an engine and a starter motor of the hybrid coupling system, a coupling controller connected to a brake and a clutch of the hybrid coupling system, and an integrated motor controller connected to a generator and a drive motor of the hybrid coupling system 10, wherein the starter motor is connected to the engine for starting the engine.

Preferably, the vehicle running control system of the hybrid electric vehicle further comprises a high-voltage relay for connecting the hybrid coupling system and the power battery, and the whole vehicle controller is connected with the high-voltage relay and used for controlling the high-voltage relay to be closed or opened.

Preferably, the vehicle running control system of the hybrid electric vehicle further comprises a DC/DC converter connected with the vehicle controller and a low-voltage load connected with the DC/DC converter, wherein the DC/DC converter is connected with the power battery and the integrated motor controller.

The embodiment of the invention provides a vehicle running control method of a hybrid electric vehicle, which comprises the following steps:

acquiring sensor detection data corresponding to the hybrid power coupling system, and acquiring battery detection data corresponding to the power battery;

performing fault detection based on the sensor detection data and the battery detection data to obtain a fault detection result;

if the fault detection result is that a fault exists, determining a to-be-selected driving mode based on the fault detection result;

acquiring a selection control instruction, determining a target driving mode and a target gear based on the selection control instruction, and acquiring a target working mode;

And a power controller is adopted to control a power source of the hybrid power coupling system to work in a target working mode.

Preferably, the acquiring a selection control instruction, determining a target drive mode and a target gear based on the selection control, includes:

if the number of the to-be-selected driving modes is one, determining the to-be-selected driving modes as target driving modes, acquiring gear selection instructions, and determining target gears based on the gear selection instructions;

and if the number of the to-be-selected driving modes is at least two, acquiring a mode selection instruction and a gear selection instruction, determining a target driving mode based on the mode selection instruction and the to-be-selected driving mode, and determining a target gear based on the gear selection instruction.

Preferably, if the fault detection result is that there is a fault, determining the candidate driving mode based on the fault detection result includes:

if the fault detection result shows that at least one of the generator and the driving motor has a fault, determining an engine direct-drive mode as a to-be-selected driving mode;

the power source adopting the power controller to control the hybrid power coupling system to work in a target working mode comprises the following steps:

The power controller is used for controlling the engine to drive the hybrid electric vehicle to run, the clutch and the brake are controlled to work, and the DC/DC converter converts high-voltage power output by the power battery into low-voltage power and outputs the low-voltage power to the low-voltage load so that the hybrid electric vehicle runs in a target working mode.

if the fault detection result shows that the power battery has a fault, determining an engine direct drive mode and a hybrid mode as a to-be-selected drive mode;

the high-voltage relay is controlled to be disconnected, the power controller is used for controlling the engine, the generator and the driving motor to drive the hybrid electric vehicle to run, the clutch and the brake are controlled to work, and the DC/DC converter converts high-voltage power output by the generator into low-voltage power and outputs the low-voltage power to the low-voltage load so that the hybrid electric vehicle runs in a target working mode.

If the fault detection result shows that the power battery has a fault and at least one of the generator and the driving motor has a fault, determining an engine direct-drive mode as a to-be-selected driving mode;

the high-voltage relay is controlled to be disconnected, the power controller is adopted to control the engine to drive the hybrid electric vehicle to run, the clutch and the brake are controlled to work, and the DC/DC converter converts high-voltage power output by the starting motor or the generator into low-voltage power and outputs the low-voltage power to the low-voltage load so that the hybrid electric vehicle runs in a target working mode.

Preferably, before the driving of the engine-driven hybrid vehicle by the power controller, the vehicle driving control method of the hybrid vehicle further includes:

detecting whether the engine is started or not, and acquiring a starting detection result;

if the starting detection result is that the engine is not started and the fault detection result is that the generator has a fault, a power controller is adopted to control the starting motor connected with the engine, and the engine is started;

and if the starting detection result is that the engine is not started, and the fault detection result is that the generator is not in fault, a power controller is adopted to control the generator or a starting motor connected with the engine, and the engine is started.

According to the vehicle running control system and the vehicle running control method of the hybrid electric vehicle, fault detection can be carried out according to the battery detection data collected by the battery management system and the sensor detection data collected by the sensor assembly, a fault detection result is obtained, and a control instruction is sent to the power controller according to the fault detection result, so that the power controller controls the power source of the hybrid electric vehicle to run in a target working mode corresponding to the fault detection result, and when a high-voltage system such as a generator and a power battery of the hybrid electric vehicle breaks down, the power source of the hybrid electric vehicle can still be controlled to work in a target driving mode corresponding to the fault detection result by the power controller, so that the driving safety of the hybrid electric vehicle is ensured, and the driving risk caused by incapability of high-voltage power supply due to the fault of the high-voltage system is avoided.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the description of the embodiments of the present invention will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a vehicle travel control system for a hybrid vehicle according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of the hybrid coupling system of FIG. 1;

fig. 3 is a flowchart of a vehicle running control method of a hybrid vehicle in an embodiment of the invention;

fig. 4 is another flowchart of a vehicle running control method of a hybrid vehicle in an embodiment of the invention;

fig. 5 is another flowchart of a vehicle running control method of a hybrid vehicle in an embodiment of the invention;

fig. 6 is another flowchart of a vehicle running control method of a hybrid vehicle in an embodiment of the invention.

In the figure: 10. a hybrid coupling system; 101. an engine; 102. a first clutch; 103. an input shaft; 104. a sun gear; 105. a planet carrier; 106. a gear ring; 107. a brake; 108. a second clutch; 109. a first gear; 110. a second gear; 111. a generator; 112. an intermediate shaft; 113. a third gear; 114. a fourth gear; 115. a fifth gear; 116. a driving motor; 117. a sixth gear; 118. a differential; 119. starting a motor; 20. a power battery; 30. a vehicle controller; 40. a battery management system; 50. a power controller; 51. an engine controller; 52. a coupling controller; 53. an integrated motor controller; 60. a high-voltage relay; 70. a DC/DC converter; 80. a low voltage load; 90. a charging control mechanism; 91. a charger controller; 92. an AC charger; 93. a slow filling port; 94. and (5) quickly filling the mouth.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

The embodiment of the invention provides a vehicle running control system of a hybrid electric vehicle. As shown in fig. 1, the vehicle running control system of the hybrid electric vehicle is applied between a hybrid coupling system 10 and a power battery 20, and comprises a vehicle controller 30, a battery management system 40 connected with the power battery 20, a power controller 50 connected with a power source of the hybrid coupling system 10, and a sensor assembly (not shown in the figure) arranged on the hybrid coupling system 10; the vehicle controller 30 is connected with the sensor assembly, the battery management system 40 and the power controller 50, and is configured to perform fault detection according to sensor detection data collected by the sensor assembly and battery detection data collected by the battery management system 40, and control the power controller 50 based on a fault detection result, and run in a target working mode corresponding to the fault detection result.

The hybrid coupling system 10 is a power system that provides a plurality of power sources in a hybrid vehicle. In the example shown in fig. 2, the power sources of the hybrid coupling system 10 include, but are not limited to, an engine 101, a generator 111, clutches including a first clutch 102 and a second clutch 108, and a brake 107.

The battery management system 40 is a system connected to the power battery 20 for controlling the operation of the power battery 20. In this example, the battery management system 40 is connected to the power battery 20 and the vehicle controller 30, and is configured to collect battery detection data of the power battery 20 in real time, and send the battery detection data to the vehicle controller 30, so that the vehicle controller 30 determines whether the power battery 20 fails according to the battery detection data to obtain a failure detection result, where the failure detection result may reflect whether a high voltage system, such as the power battery 20 of the hybrid vehicle, fails.

The sensor assembly is arranged on the hybrid power coupling system 10 and is used for collecting sensor detection data such as voltage and current when each power source in the hybrid power coupling system 10 works in real time. In this example, the sensor assembly is connected to the vehicle controller 30, and is configured to collect sensor detection data of the hybrid power coupling system 10 in real time, and send the sensor detection data to the vehicle controller 30, so that the vehicle controller 30 determines whether the power source of the hybrid power coupling system 10 fails according to the sensor detection data, so as to obtain a failure detection result, where the failure detection result may reflect that a high-voltage system such as the generator 111 and the driving motor 116 in the hybrid power coupling system 10 has a failure.

The power controller 50 is a controller connected to the vehicle control unit 30 and a power source of the hybrid coupling system 10. In this example, the power controller 50 may receive a control instruction sent by the whole vehicle controller 30, and control the power source of the hybrid power coupling system 10 to work, so as to ensure that the hybrid power vehicle runs in the target working mode corresponding to the fault detection result.

The target working mode is a working mode for determining running of the hybrid electric vehicle according to a fault detection result. As an example, in a normal case, the hybrid vehicle may determine that the driving mode in which the hybrid vehicle travels is any one of an engine direct-drive mode, a hybrid mode, a dual-motor driving mode, a single-battery power-only mode, a series range-extending mode, and a parking power generation mode, based on the battery detection data and the vehicle state data. Accordingly, when the fault detection result determines that the hybrid power coupling system 10 and/or the power battery 20 is/are faulty, a portion of the above-mentioned operation modes may be determined as the candidate driving modes, so that the target operation mode including the target driving mode and the target gear corresponding thereto is determined according to the selection control instruction input by the user. For example, when the generator 111 or the driving motor 116 fails, the engine direct-drive mode may be determined as the candidate driving mode, and when the engine direct-drive mode is provided with two gear positions, that is, the first gear of the engine direct-drive mode and the second gear of the engine direct-drive mode, the target working mode may be determined as the first gear of the engine direct-drive mode or the second gear of the engine direct-drive mode according to the selection control instruction input by the user.

As an example, fig. 2 shows a schematic diagram of the hybrid coupling system 10, and as shown in fig. 2, the hybrid coupling system 10 includes an engine 101, a first clutch 102 connected to the engine 101, an input shaft 103 connected to the first clutch 102, a planetary gear mechanism and a first gear 109 provided on the input shaft 103, a brake 107 and a second clutch 108 connected to the planetary gear mechanism, a second gear 110 connected to the first gear 109, a generator 111 connected to the second gear 110, a third gear 113 connected to the planetary gear mechanism, a fifth gear 115 connected to the third gear 113, a driving motor 116 connected to the fifth gear 115, a fourth gear 114 connected to the third gear 113 through an intermediate shaft 112, a sixth gear 117 connected to the fourth gear 114, a differential 118 connected to the sixth gear 117, and a starting motor 119 connected to the engine 101; the planetary gear mechanism includes a sun gear 104, a carrier 105, and a ring gear 106. In this example, the engine 101 is connected to the ring gear 106 via the first clutch 102; the engine 101 and the generator 111 are connected with the second gear 110 through the first gear 109; the drive motor 116 is coupled to the engine 101 and the generator 111 via a fifth gear 115. Brake 107 is coupled to sun gear 104 for braking sun gear 104. The first clutch 102 is connected with the engine 101 and is used for controlling whether the power of the engine 101 is output or not, so that the pure mode and the hybrid mode are switched. The second clutch 108 is connected to the ring gear 106, and the second clutch 108 is engaged with the brake 107 to realize two gear shifts of the engine 101. For example, when brake 107 is engaged, power of engine 101 is transmitted to carrier 105 through ring gear 106, then to third gear 113 through carrier 105, to intermediate shaft 112, to sixth gear 117 through fourth gear 114, and finally to differential 118 and the wheel end, which is in engine direct drive mode first gear. For another example, when the second clutch 108 is engaged, the sun gear 104, the carrier 105 and the ring gear 106 in the planetary gear mechanism rotate integrally, are fixedly connected, have a speed ratio of 1, and then are transmitted to the first gear 109 through the carrier 105, to the intermediate shaft 112, to the fourth gear 114 through the second gear 110, and finally to the differential 118 and the wheel end, and at this time are in the engine direct drive mode second gear. The drive motor 116 transmits power to the third gear 113 through the fifth gear 115, to the intermediate shaft 112 through the fourth gear 114 to the sixth gear 117, and finally to the differential 118 and the wheel end.

In this example, the whole vehicle controller 30 is connected with the battery management system 40, the sensor assembly and the power controller 50, and can perform fault detection according to the battery detection data collected by the battery management system 40 and the sensor detection data collected by the sensor assembly, obtain a fault detection result, and send a control instruction to the power controller 50 according to the fault detection result, so that the power controller 50 controls the power source of the hybrid power coupling system 10 to run in a target working mode corresponding to the fault detection result, so as to ensure that when the high-voltage systems such as the generator 111 and the power battery 20 of the hybrid power coupling system 10 have faults, the power source of the hybrid power coupling system 10 can still be controlled by the power controller 50 to work in a target driving mode corresponding to the fault detection result, so as to ensure the driving safety of the hybrid power vehicle, and avoid the driving risk caused by the failure of high-voltage power supply due to the fault of the high-voltage system. The fault detection result may reflect whether the high-voltage system such as the generator 111, the driving motor 116, the power battery 20, etc. of the hybrid electric vehicle has a fault, so that when the high-voltage system has a fault, the power controller 50 may control the power source of the hybrid electric vehicle coupling system 10 to run in the target working mode corresponding to the fault detection result.

In one embodiment, power controller 50 includes an engine controller 51 coupled to engine 101 and a starter motor 119 of hybrid coupling system 10, a coupling controller 52 coupled to brake 107 and a clutch of hybrid coupling system 10, and an integrated motor controller 53 coupled to generator 111 and a drive motor 116 of hybrid coupling system 10, wherein starter motor 119 is coupled to engine 101 for starting engine 101.

The engine controller 51 is a controller connected to the engine 101 and the starter motor 119 of the hybrid power coupling system 10, the engine controller 51 is also connected to the vehicle controller 30, and is configured to control the engine 101 and the starter motor 119 to operate according to a control instruction of the vehicle controller 30, and the starter motor 119 is a motor connected to the engine 101 and used for starting the engine 101.

The coupling controller 52 is a controller connected to the clutch and brake 107 of the hybrid coupling system 10, and the coupling controller 52 is further connected to the vehicle controller 30, for controlling the operation of the clutch and brake 107 according to a control command of the vehicle controller 30.

The integrated motor controller 53 is a controller connected to the generator 111 and the driving motor 116 of the hybrid power coupling system 10, and the integrated motor controller 53 is further connected to the whole vehicle controller 30, and is configured to control the generator 111 and the driving motor 116 to operate according to a control instruction of the whole vehicle controller 30.

As an example, since the engine direct-drive mode needs to control the engine 101, the clutch, and the brake 107 to operate cooperatively, when the target drive mode in the target operation mode corresponding to the failure detection result is the engine direct-drive mode, the whole vehicle controller 30 needs to send a control command to the engine controller 51 to cause the engine controller 51 to control the engine 101 to operate, or when the engine 101 is not started, the engine 101 is controlled to start by the starter motor 119, then the engine 101 is controlled to operate, and a control command is sent to the coupling controller 52 to cause the coupling controller 52 to control the clutch to be engaged or disengaged, and to control the brake 107 to brake or disengage, so as to realize control of the hybrid vehicle to travel in the engine direct-drive mode.

As an example, since the hybrid mode needs to control the engine 101, the generator 111, the driving motor 116, the clutch and the brake 107 to operate in coordination, when the target driving mode in the target operation mode corresponding to the failure detection result is the hybrid mode, the vehicle controller 30 needs to send a control command to the engine controller 51 to cause the engine controller 51 to control the engine 101 to operate, or when the engine 101 is not started, the engine 101 is controlled to start by the starter motor 119 and then the engine 101 is controlled to operate; and sends a control command to the coupling controller 52 to cause the coupling controller 52 to control the clutch to be engaged or disengaged and to control the brake 107 to be braked or disengaged, so as to realize control of the hybrid vehicle to run in the hybrid mode.

As an example, the sensor assembly includes a first sensor disposed on the generator 111 of the hybrid coupling system 10 and a second sensor disposed on the drive motor 116 of the hybrid coupling system 10.

Since the hybrid electric vehicle fails to supply high voltage due to a high voltage failure, at least one of the generator 111, the driving motor 116, and the power battery 20 fails, whether the power battery 20 fails or not may be determined by battery detection data collected by the battery management system 40 connected to the power battery 20, and thus, a first sensor is required to be provided on the generator 111 and a second sensor is required to be provided on the driving motor 116, and sensor detection data such as voltage and current are collected in real time through the first sensor and the second sensor, so as to determine whether the generator 111 and the driving motor 116 fail based on the sensor detection data, so that the overall controller 30 determines a failure detection result, and thus, the power source operation of the hybrid electric vehicle is controlled by the power controller 50, so that the hybrid electric vehicle is ensured to travel in a target operation mode corresponding to the failure detection result, and driving safety risk is avoided.

In one embodiment, the vehicle travel control system of the hybrid vehicle further includes a high voltage relay 60 for connecting the hybrid coupling system 10 and the power battery 20, and the whole vehicle controller 30 is connected to the high voltage relay 60 for controlling the high voltage relay 60 to be turned on or off.

The high-voltage relay 60 is a relay between the hybrid power coupling system 10 and the power battery 20, and the high-voltage relay 60 is connected with the vehicle controller 30 and is used for being closed or opened according to a control command of the vehicle controller 30 so as to connect or disconnect the hybrid power coupling system 10 and the power battery 20 with each other. As an example, when the fault detection result determines that the power battery 20 fails, the high-voltage relay 60 is controlled to be turned off to separate the power battery 20 from the hybrid power coupling system 10, so as to avoid the hybrid power coupling system 10 from reversely supplying power to the power battery 20, so that the vehicle controller 30 controls the hybrid power coupling system 10 to operate through the power controller 50, so as to achieve running in the target operation mode corresponding to the fault detection result. When the fault detection result is not that the power battery 20 fails, the high-voltage relay 60 is controlled to be closed, so that the power battery 20 is connected with the hybrid power coupling system 10, the power battery 20 supplies power to the hybrid power coupling system 10, and the hybrid power coupling system 10 is controlled to work through the power controller 50 by the whole vehicle controller 30.

In one embodiment, the vehicle travel control system of the hybrid vehicle further includes a DC/DC converter 70 connected to the vehicle controller 30 and a low voltage load 80 connected to the DC/DC converter 70, the DC/DC converter 70 being connected to the power battery 20 and the integrated motor controller 53.

The DC/DC converter 70 is a converter for converting high-voltage power into low-voltage power. The low voltage load 80 is a load for operating at low voltage connected to the DC/DC converter 70, and the low voltage load 80 includes, but is not limited to, a battery and a dashboard provided on a hybrid vehicle. In this example, the DC/DC converter 70 is connected to the vehicle controller 30 and the power battery 20, and the DC/DC converter 70 can convert the high voltage power output by the power battery 20 into low voltage power under the control of the vehicle controller 30 and output the low voltage power to the low voltage load 80; further, the DC/DC converter 70 is further connected to the integrated motor controller 53, and can receive the high voltage power or the high voltage power output from the integrated motor controller 53 and convert the high voltage power into the high voltage power and output the high voltage power to the low voltage load 80 when the power battery 20 fails and the high voltage power cannot be output. As can be appreciated, the DC/DC converter 70 is connected to the power battery 20 and the integrated motor controller 53, and can convert high voltage power input from the power battery 20 or the integrated motor controller 53 into low voltage power and output the low voltage power to the low voltage load 80 to ensure normal operation of the low voltage load 80.

In an embodiment, the vehicle running control system of the hybrid electric vehicle further comprises a charging control mechanism 90 connected with the whole vehicle controller 30, wherein the charging control mechanism 90 comprises a charger controller 91 and an alternating current charger 92, and the charger controller 91 is connected with the whole vehicle controller 30 and a slow charging port 93; the ac charger 92 is connected to the charger controller 91 and the battery management system 40, and the battery management system 40 is connected to the quick connect.

The charge control mechanism 90 is a mechanism for realizing charging of the power battery 20. As shown in fig. 1, the charging control mechanism 90 includes a charger controller 91 connected to the vehicle controller 30 via a CAN bus, and a slow charging port 93 is provided on the charger controller 91, so that when a charging gun is inserted into the slow charging port 93, a control instruction of the vehicle controller 30 is received, and the power battery 20 is charged via an ac charger 92 and the battery management system 40. The battery management system 40 is connected to the quick charge port 94 to charge the power battery 20 when a charging gun is inserted into the quick charge port 94.

In one embodiment, as shown in fig. 3, a vehicle running control method of a hybrid vehicle is provided, and the vehicle running control method of the hybrid vehicle is applied to the whole vehicle controller 30 and is described as an example, and the vehicle running control method of the hybrid vehicle includes the following steps:

s301: and acquiring sensor detection data corresponding to the hybrid power coupling system and battery detection data corresponding to the power battery.

The sensor detection data corresponding to the hybrid power coupling system 10 is a sensor component arranged in the hybrid power coupling system 10, and data such as voltage and current acquired in real time and used for reflecting the operation of each power source in the hybrid power coupling system 10. Specifically, the sensor assembly is connected to the vehicle controller 30, and is configured to collect sensor detection data of the hybrid power coupling system 10 in real time, and send the sensor detection data to the vehicle controller 30, so that the vehicle controller 30 determines whether the power source of the hybrid power coupling system 10 fails according to the sensor detection data. In this example, the sensor detection data may be data such as voltage and current collected in real time by power sources such as the generator 111 and the driving motor 116 in the hybrid coupling system 10.

The battery detection data corresponding to the power battery 20 is data collected by the battery management system 40 in real time and used for reflecting the current state of the power battery 20. In this example, the whole vehicle controller 30 is connected to the battery management system 40, and acquires battery detection data transmitted from the battery management system 40 in real time, so as to determine whether the power battery 20 fails according to the battery detection data.

S302: and performing fault detection based on the sensor detection data and the battery detection data to obtain a fault detection result.

The failure detection result is a result of determining whether or not the power source of the hybrid coupling system 10 corresponding to the sensor detection data and the power battery 20 corresponding to the battery detection data are failed, based on the sensor detection data and the battery detection data.

As an example, the vehicle control unit 30 executes a pre-configured fault detection processing logic with which the sensor detection data and the battery detection data are fault-detected to obtain a fault detection result.

For example, the normal range of power source data with sensor detection data is preconfigured in the fault detection processing logic. When the fault detection processing logic is executed, the normal range of the sensor detection data and the power source data can be matched; if the sensor detection data is in the normal range of the power source data, the obtained fault detection result is that no fault exists; if the sensor detection data is not in the normal range of the power source data, the obtained fault detection result is that a fault exists.

For example, the normal range of battery data corresponding to the battery detection data is preconfigured in the failure detection processing logic. When executing the fault detection processing logic, the battery detection data can be compared with the normal range of the battery data, and if the battery detection data is in the normal range of the battery data, the obtained fault detection result is that no fault exists; if the battery detection data is not in the normal range of the battery data, the obtained fault detection result is that a fault exists.

S303: and if the fault detection result is that the fault exists, determining a to-be-selected driving mode based on the fault detection result.

The driving mode to be selected refers to a driving mode which can be selected by a user to drive the hybrid electric vehicle to work when the power source and/or the power battery 20 of the hybrid electric coupling system 10 have a fault.

As an example, if the failure detection result determines that there is a failure in the power source of the generator 111 of the hybrid coupling system 10, the hybrid mode in which the operation of the generator 111 is to be controlled may not be determined as the candidate driving mode; accordingly, the engine direct-drive mode in which the generator 111 is not required to be controlled can be determined as the candidate drive mode, so that when the fault detection result is faulty, the hybrid electric vehicle is ensured to maintain the running capability by reasonably controlling the hybrid electric vehicle, so as to reduce the driving risk.

S304: and acquiring a selection control instruction, determining a target driving mode and a target gear based on the selection control instruction, and acquiring a target working mode.

The selection control instruction refers to a selection instruction for autonomously determining a target driving mode and a target gear for controlling driving of the hybrid electric vehicle by a user under the condition that the to-be-selected driving mode is determined. The target operation mode is an operation mode for controlling driving of the hybrid vehicle, which is determined according to the selection control instruction, and includes a target drive mode and a target gear. The target driving mode refers to a driving mode which is finally used for driving the hybrid electric vehicle to work from at least one driving mode to be selected by a user. The target gear is a gear which is finally used for controlling the operation of the hybrid electric vehicle and is selected and determined by a user from at least one working gear corresponding to the target driving mode.

In a specific embodiment, step S304, namely, obtaining a selection control instruction, determines a target driving mode and a target gear based on the selection control, specifically includes the following steps:

s3041: if the number of the to-be-selected driving modes is one, determining the to-be-selected driving mode as a target driving mode, acquiring a gear selection instruction, and determining a target gear based on the gear selection instruction.

The gear selection instruction is a selection instruction for determining a target gear for controlling driving of the hybrid electric vehicle, and is one of selection control instructions. In this example, when the number of the drive modes to be selected is one, the drive mode selection is not required, and therefore, the drive mode to be selected can be directly determined as the target drive mode. Because the working gear corresponding to the target driving mode includes at least one gear, the vehicle controller 30 only needs to receive the gear selection instruction triggered by the user operation, and determines the target gear according to the gear selection instruction, which is helpful for reducing the operation actions. The target operating mode includes a candidate drive mode and a target gear. In the engine direct drive mode, if the target gear is the first gear, the target working mode is the first gear of the engine direct drive mode.

S3042: if the number of the to-be-selected driving modes is at least two, a mode selection instruction and a gear selection instruction are acquired, a target driving mode is determined based on the mode selection instruction and the to-be-selected driving mode, and a target gear is determined based on the gear selection instruction.

Among them, the mode selection instruction is a selection instruction for determining a target drive mode for controlling the driving of the hybrid coupling system 10, and is one of selection control instructions. In this example, when the number of the to-be-selected driving modes is at least two, a mode selection instruction is input according to the user requirement to determine the target driving mode. Since the working gear corresponding to the target driving mode includes at least one gear, the whole vehicle controller 30 needs to receive a gear selection instruction triggered by the user operation, and determine the target gear according to the gear selection instruction.

As an example, if the to-be-selected driving mode is an engine direct-drive mode and a hybrid mode, and the engine direct-drive mode and the hybrid mode both have two working gears, the target working mode determined according to the selection control instruction may be an engine direct-drive mode first gear, an engine direct-drive mode second gear, a hybrid mode first gear, and a hybrid mode second gear.

S305: and a power controller is adopted to control a power source of the hybrid power coupling system to work in a target working mode.

Specifically, after determining the target working mode, the vehicle controller 30 controls each power source to work in the target working mode through the power controller 50 corresponding to the power source according to the power source to be controlled in the target working mode and the execution action corresponding to each power source, so that the hybrid electric vehicle runs in the target working mode, which is helpful for ensuring that the hybrid electric vehicle can still be controlled to run in the target working mode and driving safety under the condition that the power source and/or the power battery 20 of the hybrid electric coupling system 10 have faults.

In the example shown in fig. 2, the power source of the hybrid coupling system 10 includes the engine 101, the generator 111, the driving motor 116, and other actuating components, and further includes the clutch and the brake 107, and the clutch includes the first clutch 102 and the second clutch 108. When the target operating mode is the first gear of the engine direct drive mode, the engine 101 is controlled to drive, the first clutch 102 is combined, the second clutch 108 is separated and the brake 107 is braked, so that the hybrid electric vehicle runs in the first gear of the engine direct drive mode. When the target working mode is the second gear of the engine direct drive mode, the engine 101 is required to be controlled to drive, the first clutch 102 is combined, the second clutch 108 is combined and the brake 107 is separated, so that the hybrid electric vehicle runs in the second gear of the engine direct drive mode. When the target operation mode is the first gear of the hybrid mode, the engine 101, the generator 111 and the driving motor 116 are controlled to be driven, the first clutch 102 is combined, the second clutch 108 is separated and the brake 107 is braked, so that the hybrid electric vehicle runs in the first gear of the hybrid mode. When the target working mode is the second gear of the hybrid mode, the engine 101, the generator 111 and the driving motor 116 are controlled to drive, the first clutch 102 is combined, the second clutch 108 is combined and the brake 107 is separated, so that the hybrid electric vehicle runs in the second gear of the hybrid mode.

In the vehicle running control method of the hybrid electric vehicle provided in this embodiment, fault detection may be performed according to the battery detection data collected by the battery management system 40 and the sensor detection data collected by the sensor assembly, a fault detection result may be obtained, and a control instruction may be sent to the power controller 50 according to the fault detection result, so that the power controller 50 may control the power source of the hybrid electric vehicle 10 to run in the target working mode corresponding to the fault detection result, so as to ensure that when the high-voltage systems such as the generator 111 and the power battery 20 of the hybrid electric vehicle 10 have faults, the power source of the hybrid electric vehicle 10 may still be controlled by the power controller 50 to work, so as to ensure the driving safety of the hybrid electric vehicle, and avoid the driving risk caused by the failure of the high-voltage power system.

In an embodiment, as shown in fig. 4, a vehicle running control method of a hybrid vehicle is provided, as a specific implementation manner of the embodiment shown in fig. 3, step S403 is a specific implementation manner of the step S303, step S404 is a specific implementation manner of the step S304, and step S405 is a specific implementation manner of the step S305. The vehicle running control method of the hybrid electric vehicle specifically comprises the following steps:

S401: sensor detection data corresponding to the hybrid power coupling system is acquired, and battery detection data corresponding to the power battery 20 is acquired.

The implementation process of step S401 is the same as that of step S301, and in order to avoid repetition, details are not repeated here.

S402: and performing fault detection based on the sensor detection data and the battery detection data to obtain a fault detection result.

The implementation process of step S402 is the same as that of step S302, and is not described here in detail to avoid repetition.

S403: and if the fault detection result shows that at least one of the generator and the driving motor has a fault, determining the direct driving mode of the engine as a candidate driving mode.

In this example, since the driving mode requiring both power sources of the generator 111 and/or the driving motor 116 cannot drive the hybrid vehicle to run when at least one of the two power sources of the generator 111 and the driving motor 116 in the hybrid coupling system 10 is out of order, it is necessary to determine the engine direct driving mode that does not require driving of the generator 111 and the driving motor 116 as the candidate driving mode.

S404: and determining the driving mode to be selected as a target driving mode, acquiring a gear selection instruction, determining a target gear based on the gear selection instruction, and acquiring a target working mode.

Step S404 is a specific embodiment of step S304. In this example, since the to-be-selected driving mode is only the engine direct-drive mode, the vehicle controller 30 may directly determine the engine direct-drive mode as the target driving mode, and only receive the gear selection instruction triggered by the user operation, and determine the target gear according to the gear selection instruction, which is helpful for reducing the operation actions. The target operating mode includes a target drive mode and a target gear. For example, in the engine direct drive mode, if the target gear is the first gear, the target operation mode is the first gear of the engine direct drive mode.

S405: the power controller is used for controlling the engine to drive the hybrid electric vehicle to run, the clutch and the brake are controlled to work, and the DC/DC converter converts high-voltage power output by the power battery into low-voltage power and outputs the low-voltage power to the low-voltage load so that the hybrid electric vehicle runs in a target working mode.

In this example, since the power battery 20 is not out of order, the power battery 20 may be used to provide high voltage power to the vehicle driving control system, avoiding the safety risk caused by the inability to apply high voltage power. Because the vehicle running control system further includes a low-voltage load 80 such as a battery and an instrument panel, and needs to work under low voltage, the whole vehicle controller 30 controls the engine 101 to drive the hybrid electric vehicle to run under the power controller 50, controls the clutch and the brake 107 to work, so that the hybrid electric vehicle runs under the target working mode, and meanwhile, the DC/DC converter 70 is required to convert the high voltage output by the power battery 20 into the low voltage and output the low voltage to the low voltage load 80, so as to ensure the normal work of the low voltage load 80, so that the low voltage load 80 is used for driving safety reminding, and the driving safety is facilitated to be ensured. As shown in the example of fig. 2, the vehicle controller 30 needs to send a control instruction to the engine controller 51 to make the engine controller 51 control the engine 101 to drive the hybrid electric vehicle to run, and send a control instruction to the coupling controller 52 to make the coupling controller 52 control the clutch and the brake 107 to operate, so that the hybrid electric vehicle runs in the target working mode, and it is ensured that when at least one of the generator and the driving motor of the hybrid electric vehicle fails, the vehicle can run in the engine direct-drive mode.

As an example, the vehicle running control method of the hybrid vehicle further includes, before the engine 101 is controlled to drive the hybrid vehicle using the power controller 50:

s4051: and detecting whether the engine is started or not, and obtaining a starting detection result.

S4052: if the starting detection result is that the engine is not started and the fault detection result is that the generator has a fault, the power controller is adopted to control a starting motor connected with the engine, and the engine is started.

S4053: if the starting detection result is that the engine is not started, and the fault detection result is that the generator is not in fault, the power controller is adopted to control the generator or a starting motor connected with the engine, and the engine is started.

In this example, when the target driving mode is the engine direct driving mode, the power controller 50 is required to control the engine 101 to drive the hybrid vehicle, so the engine 101 is required to be started in advance to ensure that the engine 101 can drive the hybrid vehicle to run. Since in the hybrid power coupling system 10, the generator 111 and the starter motor 119 are both connected to the engine 101 and can start the engine 101, the engine 101 can be started by the generator 111 or the starter motor 119 before the power controller 50 is required to control the engine 101 to drive the hybrid vehicle, so as to ensure that the engine 101 can work normally. Since at least one of the generator 111 and the driving motor 116 fails, the engine direct drive mode is determined as the target drive mode, and if the generator 111 fails, the engine 101 cannot be started, which results in the engine 101 not working normally, so whether the generator 111 fails or not needs to be determined in advance to determine to start the engine 101, and smooth performance of the engine direct drive mode is ensured.

In this example, when the to-be-selected driving mode is the engine direct-drive mode, the corresponding target operating mode is the first gear of the engine direct-drive mode and the second gear of the engine direct-drive mode. In the example shown in fig. 2, when the target operation mode is the first gear of the engine direct drive mode, the engine 101 is controlled to be driven by the engine controller 51, and the first clutch 102 is engaged, the second clutch 108 is disengaged and the brake 107 is braked by the coupling controller 52, so that the hybrid electric vehicle runs in the first gear of the engine direct drive mode. When the target working mode is the second gear of the engine direct drive mode, the engine 101 is controlled to be driven by the engine controller 51, and the first clutch 102 is combined, the second clutch 108 is combined and the brake 107 is separated by the coupling controller 52, so that the hybrid electric vehicle runs in the second gear of the engine direct drive mode.

In the vehicle running control method of the hybrid electric vehicle provided in this embodiment, fault detection may be performed according to battery detection data collected by the battery management system 40 and sensor detection data collected by the sensor assembly, when at least one of the generator 111 and the driving motor 116 is determined to have a fault according to the fault detection result, the engine direct-drive mode is determined to be a target drive mode, and a target gear is determined according to a gear selection instruction, so as to send a control instruction to the power controller 50, so that the power controller 50 controls the engine 101 to run in the engine direct-drive mode, so that when the generator 111 or the driving motor 116 has a fault, the engine 101 can still be controlled to work by the power controller 50, so as to ensure the driving safety of the hybrid electric vehicle; in addition, when at least one of the generator 111 and the driving motor 116 has a fault, the power battery 20 can be used for high-voltage power up, so that driving safety is ensured, and driving risks caused by the failure of high-voltage power up due to the fault of a high-voltage system are avoided.

In an embodiment, as shown in fig. 5, a vehicle running control method of a hybrid vehicle is provided, as a specific implementation manner of the embodiment shown in fig. 3, step S503 is a specific implementation manner of the step S303, step S504 is a specific implementation manner of the step S304, and step S505 is a specific implementation manner of the step S305. As shown in fig. 4, the vehicle running control method of the hybrid vehicle specifically includes the steps of:

s501: and acquiring sensor detection data corresponding to the hybrid power coupling system and battery detection data corresponding to the power battery.

The implementation process of step S501 is the same as that of step S301, and is not described here in detail to avoid repetition.

S502: and performing fault detection based on the sensor detection data and the battery detection data to obtain a fault detection result.

The implementation process of step S502 is the same as that of step S302, and is not described here in detail to avoid repetition.

S503: and if the fault detection result shows that the power battery has a fault, determining the direct drive mode and the hybrid mode of the engine as the candidate drive modes.

When the failure detection result is that only the power battery 20 has a failure, the engine direct drive mode driven by the engine 101, or the hybrid mode driven by the engine 101, the generator 111, and the drive motor 116 may be determined as the candidate drive mode.

S504: and acquiring a mode selection instruction and a gear selection instruction, determining a target driving mode based on the mode selection instruction and the to-be-selected driving mode, determining a target gear based on the gear selection instruction, and acquiring a target working mode.

Step S504 is a specific embodiment of step S304. Among them, the mode selection instruction is a selection instruction for determining a target drive mode for controlling the driving of the hybrid coupling system 10, and is one of selection control instructions. In this example, when the number of the to-be-selected driving modes is at least two, a mode selection instruction is input according to the user requirement to determine the target driving mode. Since the working gear corresponding to the target driving mode includes at least one gear, the whole vehicle controller 30 needs to receive a gear selection instruction triggered by the user operation, and determine the target gear according to the gear selection instruction.

S505: the high-voltage relay is controlled to be disconnected, the power controller is used for controlling the engine, the generator and the driving motor to drive the hybrid electric vehicle to run, the clutch and the brake are controlled to work, and the DC/DC converter converts high-voltage power output by the generator into low-voltage power and outputs the low-voltage power to the low-voltage load so that the hybrid electric vehicle runs in a target working mode.

In this example, since the power battery 20 has a fault, the power battery 20 cannot be used to provide high voltage power to the vehicle driving control system, in order to avoid that the current generated by the hybrid coupling system 10 is input to the power battery 20 during the driving control of the vehicle driving control system, resulting in energy waste and safety risk, the high voltage relay 60 provided between the hybrid coupling system 10 and the power battery 20 needs to be disconnected before the hybrid vehicle is controlled to run.

In this example, since there is a failure in the power battery 20, it is possible to select the engine direct drive mode or the hybrid mode that does not require high voltage on the power battery 20 as the target drive mode; when the target driving mode is the engine direct driving mode, the engine 101 is controlled to drive the hybrid electric vehicle to run by the engine controller 51, and the clutch and the brake 107 are controlled to work by the coupling controller 52; when the target driving mode is the hybrid mode, the engine 101 is controlled to be driven by the engine controller 51, the generator 111 and the driving motor 116 are controlled to drive the hybrid electric vehicle to run by the integrated motor controller 53, and the clutch and the brake 107 are controlled to work by the coupling controller 52, so that the hybrid electric battery 20 can run normally when the power battery 20 has faults, and the safety risk is avoided.

In the vehicle running control method of the hybrid electric vehicle provided in this embodiment, fault detection may be performed according to the battery detection data collected by the battery management system 40 and the sensor detection data collected by the sensor assembly, when the fault detection result determines that there is a fault in the power battery 20, the engine direct drive mode or the hybrid mode is determined to be the target drive mode according to the mode selection instruction, and the target gear is determined according to the gear selection instruction, so as to determine the target working mode, so that the power controller 50 controls the engine 101 to run in the engine direct drive mode, or controls the engine 101, the generator 111 and the driving motor 116 to run in the hybrid electric vehicle to ensure the driving safety of the hybrid electric vehicle, and when the power battery 20 has a fault, a part of the generated power is used by the driving motor 116, and the other part is converted into low voltage power by the DC/DC converter 70 to be used by the low voltage load 80 of the hybrid electric vehicle.

In an embodiment, as shown in fig. 6, a vehicle running control method of a hybrid vehicle is provided, as a specific implementation manner of the embodiment shown in fig. 3, step S603 is a specific implementation manner of the step S303, step S604 is a specific implementation manner of the step S304, and step S605 is a specific implementation manner of the step S305. As shown in fig. 4, the vehicle running control method of the hybrid vehicle specifically includes the steps of:

S601: and acquiring sensor detection data corresponding to the hybrid power coupling system and battery detection data corresponding to the power battery.

The implementation process of step S601 is the same as that of step S301, and in order to avoid repetition, details are not repeated here.

S602: and performing fault detection based on the sensor detection data and the battery detection data to obtain a fault detection result.

The implementation process of step S602 is the same as that of step S302, and is not described here in detail to avoid repetition.

S603: and if the fault detection result shows that the power battery has a fault and at least one of the generator and the driving motor has a fault, determining the direct driving mode of the engine as a candidate driving mode.

In this example, since the power battery 20 has a failure, the engine direct drive mode or the hybrid mode may be adopted as the drive mode to be selected; since at least one of the two power sources of the generator 111 and the driving motor 116 in the hybrid power coupling system 10 has a fault, the driving mode requiring the two power sources of the generator 111 and/or the driving motor 116 cannot drive the hybrid electric vehicle to run, and the engine direct driving mode requiring no operation of the generator 111 and the driving motor 116 is determined as the candidate driving mode. Therefore, when there is a failure in the power battery 20 and at least one of the generator 111 and the drive motor 116 is failed, only the engine direct drive mode can be selected to be determined as the candidate drive mode.

S604: and determining the driving mode to be selected as a target driving mode, acquiring a gear selection instruction, determining a target gear based on the gear selection instruction, and acquiring a target working mode.

The implementation process of step S604 is the same as that of step S404, and is not repeated here.

S605: the high-voltage relay is controlled to be disconnected, the power controller is adopted to control the engine to drive the hybrid electric vehicle to run, the clutch and the brake are controlled to work, and the DC/DC converter converts high-voltage power output by the starting motor or the generator into low-voltage power and outputs the low-voltage power to the low-voltage load so that the hybrid electric vehicle runs in a target working mode.

In this example, since the power battery 20 has a fault, the power battery 20 cannot be used to provide high voltage power to the vehicle driving control system, in order to avoid that the current generated by the hybrid coupling system 10 is input to the power battery 20 during the driving control of the vehicle driving control system, resulting in energy waste and safety risk, the high voltage relay 60 for connecting the hybrid coupling system 10 and the power battery 20 needs to be disconnected before controlling the hybrid vehicle to run. Since the vehicle running control system further includes the low-voltage load 80 such as a battery and an instrument panel, the vehicle controller 30 controls the engine 101 to drive the hybrid vehicle to run through the power controller 50, and controls the clutch and the brake 107 to operate, so that the hybrid vehicle needs to output the low-voltage power to the low-voltage load 80 while running in the target operating mode.

Further, the vehicle running control method of the hybrid vehicle further includes, before the engine 101 is controlled to drive the hybrid vehicle to run by the power controller 50:

s6051: and detecting whether the engine is started or not, and obtaining a starting detection result.

S6052: if the starting detection result is that the motor is not started and the fault detection result is that the generator is in fault, a power controller is adopted to control a starting motor connected with an engine, the engine is started, the engine is controlled to drive the hybrid electric vehicle to run, a clutch and a brake are controlled to work, and a DC/DC converter sends low-voltage power output by the starting motor to a low-voltage load so that the hybrid electric vehicle runs in a target working mode.

S6053: if the starting detection result is that the generator is not started and the fault detection result is that the generator is not in fault, the power controller is adopted to control the generator or a starting motor 1 connected with the engine, the engine is started, the engine is controlled to drive the hybrid electric vehicle to run, the clutch and the brake are controlled to work, the DC/DC converter converts high-voltage power output by the generator into low-voltage power and outputs the low-voltage power to a low-voltage load, or the DC/DC converter sends the low-voltage power output by the starting motor to the low-voltage load, so that the hybrid electric vehicle runs in a target working mode.

In this example, when there is a failure in the generator 111, the starter motor 119 connected to the engine 101 is used as the generator 111 to generate 12V low voltage for use by the low voltage load 80; when there is no failure in the generator 111, the generator 111 generates electricity, and part of the generated electricity is used by the drive motor 116, and the other part is converted into low-voltage electricity by the DC/DC converter 70 to be used by the low-voltage load 80 of the hybrid vehicle.

In the vehicle running control method of the hybrid electric vehicle provided in this embodiment, fault detection may be performed according to the battery detection data collected by the battery management system 40 and the sensor detection data collected by the sensor assembly, when the fault detection result determines that there is a fault in the power battery 20 and at least one of the generator 111 and the driving motor 116 has a fault, the engine direct-drive mode is determined as a target driving mode, and the target gear is determined according to the gear selection instruction, so that the target working mode is determined, so that the power controller 50 controls the engine 101 to run in the engine direct-drive mode, and the driving safety of the hybrid electric vehicle is ensured, and the DC/DC converter 70 needs to forward the voltage low sent by the starting motor 119 to the low-voltage load 80, or convert the high-voltage sent by the generator 111 to the low-voltage power for the low-voltage load 80 of the hybrid electric vehicle.

It should be understood that the sequence number of each step in the foregoing embodiment does not mean that the execution sequence of each process should be determined by the function and the internal logic, and should not limit the implementation process of the embodiment of the present invention.

The above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention, and are intended to be included in the scope of the present invention.

Claims

1. The vehicle running control system of the hybrid electric vehicle is applied between a hybrid power coupling system and a power battery and is characterized by comprising a whole vehicle controller, a battery management system connected with the power battery, a power controller connected with a power source of the hybrid power coupling system and a sensor assembly arranged on the hybrid power coupling system; the sensor assembly comprises a first sensor arranged on a generator of the hybrid power coupling system and a second sensor arranged on a driving motor of the hybrid power coupling system, and sensor detection data are acquired through the first sensor and the second sensor; the whole vehicle controller is connected with the sensor assembly, the battery management system and the power controller, and is used for performing fault detection according to sensor detection data acquired by the sensor assembly and battery detection data acquired by the battery management system, judging whether a generator, a driving motor and a power battery have faults, determining a working mode corresponding to a power source without faults as at least one to-be-selected driving mode when at least one of the generator, the driving motor and the power battery has faults as a fault detection result, and determining a target working mode according to a selection control instruction input by a user; the selection control instruction refers to a selection instruction for automatically determining a target driving mode and a target gear for controlling the driving of the hybrid electric vehicle by a user under the condition of determining a to-be-selected driving mode; if the number of the to-be-selected driving modes is one, determining the to-be-selected driving modes as target driving modes, acquiring gear selection instructions, and determining target gears based on the gear selection instructions; if the number of the to-be-selected driving modes is at least two, a mode selection instruction and a gear selection instruction are acquired, a target driving mode is determined based on the mode selection instruction and the to-be-selected driving mode, and a target gear is determined based on the gear selection instruction; and acquiring a target working mode based on the target driving mode and the target gear, and controlling the power controller to run in the target working mode corresponding to the fault detection result.

2. The vehicle travel control system of a hybrid vehicle of claim 1, wherein the power controller includes an engine controller connected to an engine and a starter motor of the hybrid coupling system, a coupling controller connected to a brake and a clutch of the hybrid coupling system, and an integrated motor controller connected to a generator and a drive motor of the hybrid coupling system, wherein the starter motor is connected to the engine for starting the engine.

3. The vehicle running control system of a hybrid vehicle according to claim 1, further comprising a high-voltage relay for connecting the hybrid coupling system and the power battery, wherein the vehicle controller is connected to the high-voltage relay for controlling the high-voltage relay to be turned on or off.

4. The vehicle running control system of a hybrid vehicle according to claim 2, further comprising a DC/DC converter connected to the vehicle controller and a low-voltage load connected to the DC/DC converter, the DC/DC converter being connected to the power battery and the integrated motor controller.

5. A vehicle travel control method of a hybrid vehicle, comprising:

acquiring sensor detection data corresponding to the hybrid power coupling system by using a first sensor arranged on the generator and a second sensor arranged on the driving motor, and acquiring battery detection data corresponding to the power battery;

performing fault detection based on the sensor detection data and the battery detection data, determining whether a fault exists in the generator, the driving motor and the power battery, and obtaining a fault detection result;

if the fault detection result is that at least one of the generator, the driving motor and the power battery has a fault, determining a working mode corresponding to the power source without the fault as at least one to-be-selected driving mode, and determining a target working mode according to a selection control instruction input by a user; the selection control instruction refers to a selection instruction for automatically determining a target driving mode and a target gear for controlling the driving of the hybrid electric vehicle by a user under the condition of determining a to-be-selected driving mode;

If the number of the to-be-selected driving modes is at least two, a mode selection instruction and a gear selection instruction are acquired, a target driving mode is determined based on the mode selection instruction and the to-be-selected driving mode, and a target gear is determined based on the gear selection instruction;

acquiring a target working mode based on the target driving mode and the target gear;

6. The vehicle running control method of a hybrid vehicle according to claim 5, wherein if the failure detection result is that there is a failure, determining a candidate driving mode based on the failure detection result includes:

7. The vehicle running control method of a hybrid vehicle according to claim 5, wherein if the failure detection result is that there is a failure, determining a candidate driving mode based on the failure detection result includes:

8. The vehicle running control method of a hybrid vehicle according to claim 5, wherein if the failure detection result is that there is a failure, determining a candidate driving mode based on the failure detection result includes:

9. The vehicle running control method of a hybrid vehicle according to claim 6 or 8, characterized in that the vehicle running control method of a hybrid vehicle further includes, before the engine-driven hybrid vehicle is controlled to run by the power controller:

if the starting detection result is that the engine is not started and the fault detection result is that the generator has a fault, a power controller is adopted to control a starting motor connected with the engine, and the engine is started;