Apparatus and method for controlling ISG system operating mode of vehicle

Abstract

The invention relates to an apparatus and a method for controlling an ISG system operating mode of a vehicle. The device for controlling the working modes of the ISG system of the vehicle comprises an ISG system working mode selection button, a control module and a control module, the ISG system working mode selection button is used for receiving selection of the working modes of the ISG system, and the working modes of the ISG system comprise a manual mode and an automatic mode; a position information acquisition device configured to acquire current position information of the vehicle; and the control device is electrically connected with the ISG system working mode selection button, is in communication connection with the position information acquisition device, and is configured to determine whether the precondition of working of the ISG system is met or not, and when the precondition of working of the ISG system is met, whether the ISG system is enabled to work or not is determined based on the current position information of the vehicle. According to the device and method for controlling the working mode of the ISG system of the vehicle, whether the engine enters the flameout state or not can be selected according to the intention of a driver, and the driving comfort of a driver and passengers is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle control, and more specifically, to a device and method for controlling an operating mode of an idle stop (ISG) system of a vehicle. Background Art

[0002] As a means of transportation, vehicles have brought a lot of convenience to our lives. With the increasing number of vehicles, especially during rush hour in cities, traffic conditions have become increasingly worse. In the case of traffic congestion, the engine is always in the starting state, which not only consumes fuel but also emits more exhaust gas. The vehicle's Idle Stop and Go (ISG) system came into being. For vehicles equipped with the ISG system, it can control the automatic stop and start of the engine, bringing better fuel economy and making the vehicle energy-saving and environmentally friendly.

[0003] When the ISG system of the current vehicle is working, if the vehicle speed is zero, the doors are closed, the driver and passengers' seat belts are fastened, the doors and engine hood are closed, etc., the vehicle will enter the engine shutdown (stop) state. If the driver releases the brake pedal, switches gears (N gear → D gear), the door is opened, the driver or passenger does not fasten the seat belt, the air conditioning air volume is high, etc., the vehicle will enter the engine ignition state.

[0004] Therefore, the current ISG system cannot be selected according to the driver's intention, lacks intelligent control, and reduces the driving comfort of the vehicle. For example, when the red light enters the countdown, the car brakes briefly during traffic congestion, or when the car brakes briefly to let pedestrians cross the zebra crossing, the ISG system will still work even though the driver does not want the ISG system to intervene. In addition, when the vehicle enters the automatic start-stop shutdown state, the driver must keep pressing the brake pedal to ensure that the engine remains in the shutdown state. If the driver's ankle is tired and he accidentally lifts his foot, the vehicle will start, even though the driver does not want the vehicle to start at this time. Therefore, there is an urgent need for a device and method that can control the working mode of the vehicle's ISG system according to the driver's intention.

[0005] The above description of the background technology is only for facilitating an in-depth understanding of the technical solution of the present invention (such as the technical means used, the technical problems solved and the technical effects produced), and should not be regarded as an admission or any form of implication that the information constitutes prior art already known to those skilled in the art. Summary of the invention

[0006] The purpose of the present invention is to select whether the ISG system is to work according to the driver's intention, that is, to select whether the engine enters the shutdown (stop) and start state, so as to reduce the number of meaningless engine shutdowns and starts. As a result, the driving comfort of the driver and passengers can be improved, the loss of the vehicle battery can be reduced, and the later maintenance cost of the owner can be reduced.

[0007] According to an embodiment of the present invention, a device for controlling an ISG system operating mode of a vehicle comprises: an ISG system operating mode selection button, the ISG system operating mode selection button being used to receive a selection of an ISG system operating mode, the ISG system operating mode comprising a manual mode and an automatic mode; a position information acquisition device configured to acquire current position information of the vehicle; a control device electrically connected to the ISG system operating mode selection button, communicatively connected to the position information acquisition device, and configured to determine whether a prerequisite for the operation of the ISG system is met, and when the prerequisite for the operation of the ISG system is met, determining whether to operate the ISG system based on the current position information of the vehicle.

[0008] Preferably, the device for controlling the operating mode of the ISG system of the vehicle further comprises: a display device, which is communicably connected to the control device and is configured to display the selected operating mode of the ISG system.

[0009] Preferably, the device for controlling the operating mode of the ISG system of the vehicle further includes: a front camera, which is communicatively connected to the control device and configured to obtain road condition information in front of the vehicle and traffic light timing information; the control device is configured to: when the operating mode of the ISG system is selected as the automatic mode, when the prerequisites for the operation of the ISG system are met, determine whether to operate the ISG system based on the current position information of the vehicle, the road condition information in front of the vehicle and the traffic light timing information.

[0010] Preferably, before determining whether the prerequisites for the operation of the ISG system are met, the position information acquisition device is configured to: acquire the navigation information of the vehicle; calculate the driving distance of the vehicle based on the navigation information, predict the engine running time, and compare the predicted engine running time with a first predetermined time; when the predicted engine running time is less than or equal to the first predetermined time, send a signal to the control device to disable the ISG system.

[0011] Preferably, the control device is configured as follows: when the prerequisite for the operation of the ISG system is met, determining whether the vehicle is at the predetermined position based on the current position information of the vehicle; when it is determined that the vehicle is at the predetermined position, generating a signal to disable the ISG system; when it is determined that the vehicle is not at the predetermined position, determining whether there are other vehicles in front of the vehicle based on the road condition information in front of the vehicle; when it is determined that there are no other vehicles in front of the vehicle, determining whether there is a traffic light in front of the vehicle based on the road condition information in front of the vehicle; when it is determined that there is no traffic light in front of the vehicle, generating a signal to disable the ISG system; when it is determined that there is a traffic light in front of the vehicle, determining whether the green light, yellow light, and / or red light enter the second predetermined countdown time based on the traffic light time information; when it is determined that the green light or the red light enters the second predetermined countdown time, generating a signal to disable the ISG system; when it is determined that the yellow light or the red light does not enter the second predetermined countdown time, generating a signal to enable the ISG system.

[0012] Preferably, the control device is configured as follows: when there are other vehicles in front of the vehicle, determining whether the vehicle in front is stopped; when it is determined that the vehicle in front is not stopped, generating a signal to disable the ISG system; when it is determined that the vehicle in front is stopped, determining whether there is a traffic light in front of the vehicle based on the road condition information in front of the vehicle; when it is determined that there is no traffic light in front of the vehicle, generating a signal to disable the ISG system; when it is determined that there is a traffic light in front of the vehicle, determining whether the green light, yellow light, and / or red light enter the second predetermined countdown time based on the traffic light time information; when it is determined that the green light or red light enters the second predetermined countdown time, generating a signal to disable the ISG system; when it is determined that the yellow light or red light does not enter the second predetermined countdown time, generating a signal to enable the ISG system.

[0013] Preferably, the control device is configured as follows: when the ISG system operating mode is selected as the manual mode, when the prerequisite for the operation of the ISG system is met, determining whether the vehicle is at the predetermined position based on the current position information of the vehicle; when it is determined that the vehicle is at the predetermined position, generating a signal to disable the ISG system; when it is determined that the vehicle is not at the predetermined position, displaying a prompt message on the display device, and selecting whether to enable the ISG system to operate according to the prompt message; when the operation of the ISG system is selected, generating a signal to enable the ISG system to operate; when the inability of the ISG system to operate is selected, generating a signal to disable the ISG system.

[0014] Preferably, the prerequisites for the operation of the ISG system include: the driver's seat belt is fastened, the driver's side door and engine hood are closed, the brake vacuum pressure is sufficient, the battery sensor is activated and the battery is fully charged, the external temperature is appropriate, the vehicle stops after traveling at a speed of more than 10 km / h, the air-conditioning control system meets the conditions, the vehicle is fully preheated, and the steering wheel rotation angle is less than 180 degrees before the vehicle stops.

[0015] Preferably, the ISG system working mode selection button is set on the steering wheel; the ISG system working mode selection button includes an automatic shift button, a + shift button and a - shift button; when the automatic shift button is pressed, the ISG system working mode is switched to automatic mode, and when the automatic shift button is pressed again, the ISG system working mode is switched to manual mode; when the ISG system working mode is manual mode, when the + shift button is pressed, the ISG system works, and when the - shift button is pressed, the ISG system does not work.

[0016] Preferably, when the ISG system is working, the engine enters a stopped state and the automatic parking function is turned on; when it is determined based on the road condition information in front of the vehicle that the vehicle in front is moving, or when the accelerator pedal is pressed, or when the yellow light or red light enters the third predetermined countdown time, or when the gear is shifted to the R gear, or when the battery charge or voltage is lower than a predetermined value, or when the battery temperature is higher than a predetermined value, or when the brake vacuum pressure is insufficient, or when the working state of the air-conditioning system requires starting the engine, or when the steering wheel rotation angle exceeds a predetermined value, or when the vehicle slips and the speed exceeds 2km / h, or when the door is opened, or the engine hood is opened, or the seat belt is unfastened, the engine enters a started state, and the automatic parking function is released only when the accelerator pedal is pressed.

[0017] According to an embodiment of the present invention, a method for controlling an ISG system operating mode of a vehicle includes: receiving a selection of an ISG system operating mode through an ISG system operating mode selection button, wherein the ISG system operating mode includes a manual mode and an automatic mode; obtaining current position information of the vehicle; determining whether a prerequisite for the operation of the ISG system is met; and when the prerequisite for the operation of the ISG system is met, determining whether to operate the ISG system based on the current position information of the vehicle.

[0018] Preferably, the method for controlling an ISG system operating mode of a vehicle further comprises: displaying a selected ISG system operating mode.

[0019] Preferably, the method for controlling the ISG system operating mode of a vehicle further includes: acquiring road condition information in front of the vehicle and traffic light timing information; when the ISG system operating mode is selected as automatic mode, when the prerequisites for the operation of the ISG system are met, determining whether to operate the ISG system based on the vehicle's current position information, the road condition information in front of the vehicle and the traffic light timing information.

[0020] Preferably, the method for controlling the operating mode of the ISG system of a vehicle further includes: before determining whether the prerequisites for the operation of the ISG system are met: obtaining navigation information of the vehicle; calculating the driving distance of the vehicle based on the navigation information, and predicting the engine running time based on the navigation information; comparing the predicted engine running time with a first predetermined time based on the navigation information; when the predicted engine running time is less than or equal to the first predetermined time, sending a signal to the control device to disable the ISG system.

[0021] Preferably, the method for controlling the working mode of the ISG system of a vehicle further includes: when the prerequisite for the operation of the ISG system is met, determining whether the vehicle is at a predetermined position based on the current position information of the vehicle; when it is determined that the vehicle is at the predetermined position, generating a signal to disable the ISG system; when it is determined that the vehicle is not at the predetermined position, determining whether there are other vehicles in front of the vehicle based on the road condition information in front of the vehicle; when it is determined that there are no other vehicles in front of the vehicle, determining whether there is a traffic light in front of the vehicle based on the road condition information in front of the vehicle; when it is determined that there is no traffic light in front of the vehicle, generating a signal to disable the ISG system; when it is determined that there is a traffic light in front of the vehicle, determining whether the green light, the yellow light, and / or the red light enter the second predetermined countdown time based on the traffic light time information; when it is determined that the green light or the red light enters the second predetermined countdown time, generating a signal to disable the ISG system; when it is determined that the yellow light or the red light does not enter the second predetermined countdown time, generating a signal to enable the ISG system.

[0022] Preferably, the method for controlling the working mode of the ISG system of a vehicle further includes: when there are other vehicles in front of the vehicle, determining whether the vehicle in front is stopped; when it is determined that the vehicle in front is not stopped, generating a signal to disable the ISG system; when it is determined that the vehicle in front is stopped, determining whether there is a traffic light in front of the vehicle based on the road condition information in front of the vehicle; when it is determined that there is no traffic light in front of the vehicle, generating a signal to disable the ISG system; when it is determined that there is a traffic light in front of the vehicle, determining whether the green light, yellow light, and / or red light enter the second predetermined countdown time based on the traffic light time information; when it is determined that the green light or the red light enters the second predetermined countdown time, generating a signal to disable the ISG system; when it is determined that the yellow light or the red light does not enter the second predetermined countdown time, generating a signal to enable the ISG system.

[0023] Preferably, the method for controlling the operating mode of the ISG system of a vehicle further includes: in a case where the operating mode of the ISG system is selected as the manual mode, when the prerequisite for the operation of the ISG system is met, determining whether the vehicle is at a predetermined position based on the current position information of the vehicle; when it is determined that the vehicle is at the predetermined position, generating a signal that causes the ISG system to not operate; when it is determined that the vehicle is not at the predetermined position, displaying a prompt message on a display device; receiving a selection of whether the ISG system is to operate according to the prompt message; when the operation of the ISG system is selected, generating a signal that causes the ISG system to operate; when the inoperability of the ISG system is selected, generating a signal that causes the ISG system to not operate.

[0024] Preferably, the prerequisites for the operation of the ISG system include: the driver's seat belt is fastened, the driver's side door and engine hood are closed, the brake vacuum pressure is sufficient, the battery sensor is activated and the battery is fully charged, the external temperature is appropriate, the vehicle stops after traveling at a speed of more than 10 km / h, the air-conditioning control system meets the conditions, the vehicle is fully preheated, and the steering wheel rotation angle is less than 180 degrees before the vehicle stops.

[0025] Preferably, the ISG system working mode selection button is set on the steering wheel; the ISG system working mode selection button includes an automatic shift button, a + shift button and a - shift button; when the automatic shift button is pressed, the ISG system working mode is switched to automatic mode, and when the automatic shift button is pressed again, the ISG system working mode is switched to manual mode; when the ISG system working mode is manual mode, when the + shift button is pressed, the ISG system works, and when the - shift button is pressed, the ISG system does not work.

[0026] Preferably, when the ISG system is working, the engine enters a stopped state and the automatic parking function is turned on; when it is determined based on the road condition information in front of the vehicle that the vehicle in front is moving, or when the accelerator pedal is pressed, or when the yellow light or red light enters the third predetermined countdown time, or when the gear is shifted to the R gear, or when the battery charge or voltage is lower than a predetermined value, or when the battery temperature is higher than a predetermined value, or when the brake vacuum pressure is insufficient, or when the working state of the air-conditioning system requires starting the engine, or when the steering wheel rotation angle exceeds a predetermined value, or when the vehicle slips and the speed exceeds 2km / h, or when the door is opened, or the engine hood is opened, or the seat belt is unfastened, the engine enters a started state, and the automatic parking function is released only when the accelerator pedal is pressed.

[0027] The present invention adopts the above technical solution, which has the following beneficial effects:

[0028] An ISG system working mode selection button has been added, and the driver uses the ISG system working mode selection button to select the ISG system working mode, namely manual mode and automatic mode.

[0029] When the vehicle enters the automatic start-stop shutdown state, the driver does not have to keep pressing the brake pedal to ensure that the engine remains in the shutdown state. Therefore, even if the driver lifts the brake pedal, the vehicle is still in the automatic parking state and will not start.

[0030] When the ISG system is in manual mode, the driver can choose whether to shut down the engine according to his / her intention.

[0031] When the ISG system is in automatic mode, the road condition information and traffic light time information obtained by the vehicle's front camera and the location information and navigation information obtained by the AVNT system are further used as additional conditions to determine whether the ISG system is working, thereby more intelligently controlling whether the ISG system is working. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The exemplary embodiments of the present invention will be described in more detail below in conjunction with the accompanying drawings. For the sake of clarity, the same components in different drawings are shown with the same reference numerals. It should be noted that the drawings are only for illustration and are not necessarily drawn to scale. In these drawings:

[0033] Figure 1 Detailed description is a block diagram showing an apparatus for controlling an operating mode of an ISG system of a vehicle according to an embodiment of the present invention.

[0034] Figure 2 The block diagram shows in more detail a device for controlling an ISG system operating mode of a vehicle according to an embodiment of the present invention.

[0035] Figure 3 A flow chart showing a method of controlling an ISG system of a vehicle in an automatic mode according to an embodiment of the present invention.

[0036] Figure 4 A flow chart showing a method of controlling an ISG system of a vehicle in a manual mode according to an embodiment of the present invention. DETAILED DESCRIPTION

[0037] The implementation scheme of the present invention is described in detail below. This implementation scheme is implemented on the premise of the technical scheme of the present invention, and a detailed implementation method and specific operation process are given, but the protection scope of the present invention is not limited to the implementation scheme described below.

[0038] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. Figure 1Detailed description is a block diagram showing an apparatus for controlling an operating mode of an ISG system of a vehicle according to an embodiment of the present invention.

[0039] The device for controlling the ISG system operating mode of a vehicle according to an embodiment of the present invention may include: a control device 100 , an ISG system operating mode selection button 200 , a front camera 300 , a position information acquiring device 400 , and a display device 500 .

[0040] The embodiment of the present invention adds an ISG system operating mode selection button 200, and the driver can select the ISG system operating mode through the ISG system operating mode selection button 200. The ISG system operating mode may include a manual mode and an automatic mode.

[0041] The ISG system operating mode selection button 200 can be set on the steering wheel of the vehicle to control the switching of the ISG system operating mode. According to the embodiment of the present invention, the ISG system operating mode selection button can be divided into three gears: automatic (Auto) gear, + gear, - gear. The ISG system operating mode selection button can be a return type button, and the driver presses the automatic (Auto) gear button to switch between manual mode and automatic mode.

[0042] When the driver presses the Auto button (i.e., presses the Auto button once), the ISG system operating mode can be switched to automatic mode; when the driver presses the Auto button again (i.e., presses the Auto button twice), the ISG system operating mode can be switched to manual mode. The "+" button and the "-" button do not work in automatic mode and only work in manual mode. In manual mode, when the driver presses the "+" button, it indicates that the ISG system is selected to work, that is, the engine enters the flameout (off) state, and the vehicle's automatic parking (AUTOHOLD) function is turned on to prevent the vehicle from slipping, and when the driver presses the "-" button, it indicates that the ISG system is selected not to work, and the engine does not enter the flameout state, that is, the ISG system is not working and the vehicle maintains normal operation.

[0043] The display device 500 may be communicatively connected to the control device 100 and may be configured to display the ISG system operating mode selected by the driver. The display device 500 may be a dashboard of the vehicle. For example, when the driver presses the Auto button, the dashboard displays "The current ISG system operating mode is the automatic mode", and when the driver presses the Auto button again, the dashboard displays "The current ISG system operating mode is the manual mode".

[0044] The front camera 300 may be configured to obtain the road condition information and traffic light time information in front of the vehicle. The road condition information may include whether there are other vehicles and traffic lights in front of the vehicle and the state of the vehicle in front (stopping or driving) when there are other vehicles in front of the vehicle. The traffic light time information includes red light countdown, yellow light countdown and green light countdown information. Currently, traffic lights have many forms, for example, they may include yellow lights, red lights, and green lights; or they may include red lights, green lights, yellow lights, green light countdown and yellow light countdown, and / or red light countdown, etc. If the traffic light only includes yellow lights, red lights, and green lights, the countdown information of the traffic light cannot be measured. If the traffic light includes red lights, green lights, yellow lights, green light countdown and yellow light countdown, and / or red light countdown, etc., the information of green light countdown, yellow light countdown, and / or red light countdown can be obtained by shooting a video with the front camera.

[0045] The position information acquisition device 400 can be configured to acquire the position information of the vehicle and the time information of the traffic light. If the front camera 300 cannot measure the countdown information of the traffic light because the traffic light only includes yellow light, red light, and green light, the position information acquisition device can be used to obtain the time information of the traffic light. The position information acquisition device 400 can be an audio video navigation telecommunication (AVNT) device. The AVNT device can realize practical functions such as AI intelligent voice control, remote control, real-time mobile phone interconnection, and GPS navigation.

[0046] The control device 100 can be electrically connected to the ISG system operating mode selection button 200, and can be communicatively connected to the front camera 300, the display device 500 and the position information acquisition device 400. The control device 100 can be configured to determine whether the prerequisites for the operation of the ISG system are met. When the prerequisites for the operation of the ISG system are met, it is determined whether to operate the ISG system based on the current position information of the vehicle, and the generated signal of whether to operate the ISG system can be sent to the engine management system, thereby causing the engine to enter a flameout (stop) state or an ignition (start) state.

[0047] The prerequisite for the operation of the ISG system is the activation conditions of the existing ISG system, including: the driver's seat belt is fastened, the driver's side door and engine hood are closed, the brake vacuum pressure is sufficient (for example, the brake booster pressure ≥ 650hpa, etc.), the battery sensor is started and the battery has sufficient charge (for example, the state of charge (SOC) ≥ 78%, the state of health (SOH) ≥ 80%, etc.), the external temperature is appropriate (for example, between -10℃ and 35℃, etc.), the vehicle stops after driving at a speed of more than 10km / h, the air-conditioning control system meets the conditions, the vehicle is fully preheated, the vehicle is not on a steep slope (for example, the uphill slope is less than 7°, the downhill slope is less than 2°, etc.), the steering wheel rotation angle is less than 180 degrees before the vehicle stops, etc.

[0048] Figure 2 FIG. 1 is a block diagram showing in more detail a device for controlling the working mode of the ISG system of a vehicle according to an embodiment of the present invention. Figure 2 The control device 100 may include an integrated control unit (ICU) 110, an integrated body unit (IBU) 120, an engine management system (EMS) 130, and the like.

[0049] The ICU 110 can be electrically connected to the ISG system working mode selection button, the door switch, the seat belt sensor, etc., and the ICU 110 can be communicatively connected to the AVNT, the front camera, and the instrument panel through wired communication. The wired communication method may include a controller area network (CAN), a universal serial bus (USB), a high definition multimedia interface (HDMI), a digital visual interface (DVI), etc.

[0050] The ICU 110 can be communicatively connected to the IBU 120 via a controller area network (CAN), but the communication network of the present invention is not limited thereto. In addition, the ICU 110 can also function as a central gateway (CGW). The central gateway (CGW) is used to forward signals between various CAN LANs to achieve interconnection between LANs. The CAN LAN may include a powertrain CAN bus (P_CAN), a body control CAN bus (B_CAN), a chassis control CAN bus (C_CAN), etc., but the communication method is not limited to the above-mentioned CAN bus communication method.

[0051] The IBU 120 may be communicatively connected to the EMS 130 via a controller area network (CAN), but the communication network of the present invention is not limited thereto. The EMS 130 may be communicatively connected to the battery management device, the voltage regulator, and the automatic transmission control device, respectively, via wired communication. The battery management device may be configured to detect the battery voltage of the vehicle, the voltage regulator may be configured to keep the vehicle voltage stable at the moment of vehicle startup, and the automatic transmission control device may be configured to detect the gear information of the vehicle.

[0052] According to the implementation scheme of the present invention, the default state of the ISG system working mode is the manual mode. When the driver presses the Auto button, the IBU will receive a corresponding signal, so that the ISG system working mode is switched to the automatic mode, and the dashboard displays "The current ISG system working mode is the automatic mode"; when the driver presses the Auto button again, the IBU will receive a corresponding signal, so that the ISG system working mode is switched to the manual mode, and the dashboard displays "The current ISG system working mode is the manual mode".

[0053] The working process of the device for controlling the working mode of the ISG system of a vehicle according to the embodiment of the present invention in different multiple working modes is described in detail below.

[0054] Figure 3 A flow chart showing a method of controlling an ISG system of a vehicle in an automatic mode according to an embodiment of the present invention.

[0055] See also Figure 3 In step S21, the driver uses the ISG system working mode selection button set on the steering wheel to select the ISG system working mode as the automatic (Auto) mode (for example, pressing the Auto button of the ISG system working mode selection button once), and in step S22, the automatic mode is displayed on a display device (for example, a dashboard). When the ISG system working mode is the automatic mode, whether the ISG system is working (that is, whether the engine enters the ignition-off state) is determined by the vehicle control device.

[0056] In step S23, the current position information and navigation information of the vehicle (the navigation information includes the destination information input by the user) are acquired by the position information acquisition device (for example, the navigation device built into the AVNT system), the travel distance of the vehicle is calculated based on the navigation information, and the engine running time is predicted, and the predicted engine running time is compared with the first predetermined time to determine whether the engine running time is less than or equal to the first predetermined time, and the first predetermined time can be set to a shorter time, such as 10 minutes, 20 minutes, 30 minutes, etc. In one example, the first predetermined time can be 20 minutes, but the present invention is not limited thereto.

[0057] When the position information acquisition device predicts that the engine running time is less than or equal to the first predetermined time (20 minutes), a signal is sent to the control device to disable the ISG system, so the ISG system does not work. That is, if the vehicle's driving distance is relatively short, that is, the engine running time is less than or equal to 20 minutes, the ISG system will be disabled to delay the battery life.

[0058] When the position information acquisition device predicts that the engine running time is greater than the first predetermined time (for example, 20 minutes), in step S24, it is determined whether the prerequisites for the operation of the ISG system are met. The prerequisites for the operation of the ISG system are the activation conditions of the existing ISG system, including: the driver's seat belt is fastened, the driver's side door and the engine hood are closed, the brake vacuum pressure is sufficient (for example, the brake booster pressure is ≥ 650hpa, etc.), the battery sensor is started and the battery has sufficient power (for example, the state of charge (SOC) ≥ 78%, the state of health (SOH) ≥ 80%, etc.), the external temperature is appropriate (for example, between -10°C and 35°C, etc.), the vehicle stops after driving at a speed of more than 10km / h, the air conditioning control system meets the conditions, the vehicle is fully preheated, the vehicle is not on a steep slope (for example, the uphill slope is less than 7°, the downhill slope is less than 2°, etc.), the steering wheel rotation angle is less than 180 degrees before the vehicle stops, etc.

[0059] When the prerequisites for the operation of the ISG system are met (i.e., "yes" in step S24), the control device can further determine whether to operate the ISG system based on the current position information of the vehicle, the road condition information in front of the vehicle, and the traffic light time information. When the prerequisites for the operation of the ISG system are not met (i.e., "no" in step S24), the control device can generate a signal to disable the ISG system, so that the engine does not enter the flameout state and maintains the current working state.

[0060] Specifically, when the prerequisite for the operation of the ISG system is met (i.e., "yes" in step S24), in step S25, it is determined whether the vehicle is at a predetermined location based on the current location information of the vehicle, and the predetermined location includes a highway, or near a parking lot, or near a gas station, etc. When it is determined that the vehicle is at the predetermined location (i.e., "yes" in step S25), a signal is generated to disable the ISG system, that is, the automatic start-stop function is not turned on. When it is determined that the vehicle is not at the predetermined location (i.e., "no" in step S25), it is further determined whether to enable the ISG system to operate based on the road condition information in front of the vehicle and the traffic light time information.

[0061] In step S26, it is determined whether there are other vehicles in front of the vehicle based on the road condition information in front of the vehicle. When it is determined in step S26 that there are no other vehicles in front of the vehicle (i.e., "No" in step S26), in step S27, it is determined whether there is a traffic light in front of the vehicle based on the road condition information in front of the vehicle. When it is determined that there is no traffic light in front of the vehicle (i.e., "No" in step S27), a signal is generated to disable the ISG system, i.e., the automatic start-stop function is not turned on. When it is determined that there is a traffic light in front of the vehicle (i.e., "Yes" in step S27), in step S28, it is further determined based on the traffic light time information whether the green light and the yellow light, and / or the red light enter the countdown second predetermined time, and the second predetermined time can be set to 5 seconds, 8 seconds, 10 seconds, etc. In one example, the second predetermined time is 5 seconds. When it is determined that the yellow light or the red light has entered the second predetermined countdown time (i.e., "Yes" in step S28), a signal is generated to disable the ISG system, and when it is determined that the yellow light or the red light has not entered the second predetermined countdown time (i.e., "No" in step S28), a signal is generated to enable the ISG system to operate, i.e., the automatic start-stop function is turned on.

[0062] When the ISG system is working, that is, the automatic start-stop function is turned on, the engine enters a stopped state, and the automatic parking (AUTOHOLD) function is turned on to prevent the vehicle from rolling. According to an implementation scheme of the present invention, the driver can release the brake pedal. When it is determined based on the road condition information in front of the vehicle that the vehicle in front is moving, or when the driver steps on the accelerator pedal, or when the green light or red light enters the third predetermined countdown time (for example, 3 seconds, 5 seconds, etc., 3 seconds in one example), or when the driver shifts to the R gear, or when the battery power or voltage is lower than a predetermined value (for example, the state of charge (SOC) <78%, the state of health (SOH) <80%, etc.), or the battery temperature is higher than a predetermined value (for example, the battery temperature ≥66°C), or the brake vacuum pressure is insufficient (for example, the brake booster pressure <650hPa, etc.), or the working state of the air-conditioning system requires starting the engine, or the steering wheel rotation angle exceeds a predetermined value (for example, the steering wheel rotation angle is greater than 180 degrees), or the vehicle slips and the speed is higher than 2km / h, or the door is opened, or the engine hood is opened, or the seat belt is unfastened, the engine enters the starting state, and the automatic parking (AUTOHOLD) function is released only when the driver steps on the accelerator pedal.

[0063] In addition, the engine will also automatically restart without the driver taking any action if the brake vacuum pressure is low, the engine has been stopped for about 5 minutes, the battery is low, or the cooling and heating performance of the air conditioning control system is unsatisfactory. The above-mentioned automatic engine restart situation is the situation of automatic engine restart in the existing ISG system, and further detailed description will be omitted here.

[0064] When it is determined in step S26 that there are other vehicles in front of the vehicle (i.e., "yes" in step S26), it is determined in step S29 whether the vehicle in front is stopped. When it is determined that the vehicle in front is not stopped (i.e., "no" in step S29), a function to disable the ISG system is generated. When it is determined that the vehicle in front is stopped (i.e., "yes" in step S29), similar to steps S27 and S28, it is further determined in step S30 whether there is a traffic light in front of the vehicle based on the road condition information in front of the vehicle, and in step S31, it is determined whether the green light and the yellow light, and / or the red light enter the countdown for the second predetermined time based on the traffic light time information. When it is determined that there is no traffic light in front of the vehicle (i.e., "no" in step S30), or when it is determined that the green light or the red light enters the countdown for the second predetermined time (i.e., "yes" in step S31), a signal to disable the ISG system is generated. When it is determined that there is a traffic light ahead of the vehicle (ie, "yes" in step S30), and when it is determined that the yellow light or the red light has not entered the countdown for the second predetermined time (ie, "no" in step S31), a signal for operating the ISG system is generated.

[0065] According to an implementation scheme of the present invention, when the ISG system operating mode is automatic mode, the road condition information and traffic light time information obtained by the vehicle's front camera and the location information and navigation information obtained by the AVNT system are used as additional conditions for determining whether to operate the ISG system, thereby more intelligently controlling whether the ISG system operates.

[0066] Figure 4 FIG. 2 is a flow chart showing a method for controlling an ISG system of a vehicle in manual mode according to an embodiment of the present invention. Figure 4 In step S41, the driver selects the ISG system working mode as the manual mode using the ISG system working mode selection button set on the steering wheel (for example, the Auto button of the ISG system working mode selection button is pressed twice in succession), and in step S42, the manual mode is displayed on the display device. When the ISG system working mode is the manual mode, whether the engine enters the ignition-off state is manually determined by the driver.

[0067] In step S43, it is determined whether the prerequisite for the operation of the ISG system is met. When the prerequisite for the operation of the ISG system is not met (i.e., "No" in step S43), the control device may generate a signal to disable the ISG system. When the prerequisite for the operation of the ISG system is met (i.e., "Yes" in step S43), the control device may determine whether the vehicle is at a predetermined location based on the current location information of the vehicle, and the predetermined location includes a highway, near a parking lot, near a gas station, etc. When it is determined that the vehicle is at the predetermined location (i.e., "Yes" in step S44), a signal to disable the ISG system is generated; when it is determined that the vehicle is not at the predetermined location (i.e., "No" in step S44), in step S45, a prompt message is displayed on the display device, and the driver selects whether to enable the ISG system according to the prompt message. The prompt message may be a prompt message of "whether to enable the ISG system to operate", and the display device may also output a prompt sound to prompt the driver to select whether to enable the ISG system to operate. In step S46, the driver selects whether to enable the ISG system to operate.

[0068] When the driver chooses to enable the ISG system (i.e. the driver presses the "+" button), a signal is generated to turn off the engine, and the vehicle's AUTOHOLD function is turned on to prevent the vehicle from rolling. When the driver presses the accelerator pedal, the engine starts working, and the AUTOHOLD function is released.

[0069] When the driver chooses to disable the ISG system (i.e. the driver presses the "-" gear button), a signal is generated to disable the ISG system. Even if the prerequisites for the ISG system to operate are met and the vehicle is not in the predetermined position, the engine does not enter the shutdown state and the vehicle operates normally.

[0070] According to the embodiment of the present invention, it is possible to choose whether to enable the ISG system according to the driver's intention, thereby reducing the number of meaningless engine shutdowns and starts, thereby improving the driving comfort of the driver and passengers, reducing the loss of the vehicle battery, and reducing the later maintenance costs of the owner.

[0071] The various embodiments of the invention are not an exhaustive list of all possible combinations, but are intended to describe representative aspects of the invention, and what is described in various embodiments may be applied independently or in combinations of two or more.

[0072] The description presented in the above exemplary embodiments is only used to illustrate the technical solution of the present invention, and is not intended to be exhaustive, nor is it intended to limit the present invention to the precise form described. Obviously, it is possible for a person of ordinary skill in the art to make many changes and variations based on the above teachings. The exemplary embodiments are selected and described to explain the specific principles of the present invention and its practical application, so that other technicians in the field can easily understand, implement and use the various exemplary embodiments of the present invention and its various selected forms and modified forms. The scope of protection of the present invention is intended to be limited by the attached claims and their equivalent forms.

Claims

1. A device for controlling an ISG system operating mode of a vehicle, comprising: An ISG system working mode selection button, the ISG system working mode selection button is used to receive a selection of an ISG system working mode, the ISG system working mode including a manual mode and an automatic mode; a position information acquisition device configured to acquire current position information of the vehicle; A control device is electrically connected to the ISG system operating mode selection button, is communicatively connected to the position information acquisition device, and is configured to determine whether the prerequisites for the operation of the ISG system are met. When the prerequisites for the operation of the ISG system are met, determine whether to operate the ISG system based on the current position information of the vehicle.

2. The device for controlling the working mode of the ISG system of a vehicle according to claim 1, further comprising: The display device is communicatively connected to the control device and is configured to display the selected ISG system operating mode.

3. The device for controlling the working mode of the ISG system of a vehicle according to claim 2, further comprising: a front camera, which is communicatively connected to the control device and configured to obtain road condition information and traffic light timing information in front of the vehicle; The control device is configured to determine whether to operate the ISG system based on the vehicle's current position information, the road condition information in front of the vehicle, and the traffic light time information when the ISG system operating mode is selected as the automatic mode and the prerequisites for the ISG system operating are met.

4. The device for controlling the working mode of the ISG system of a vehicle according to claim 3, wherein: Before determining whether the prerequisites for the operation of the ISG system are met, the location information acquisition device is configured as follows: Get navigation information of the vehicle; calculating a travel distance of the vehicle based on the navigation information, predicting an engine operating time, and comparing the predicted engine operating time with a first predetermined time; When it is predicted that the engine operation time is less than or equal to the first predetermined time, a signal is sent to the control device to disable the ISG system.

5. The device for controlling the working mode of the ISG system of a vehicle according to claim 4, wherein: The control device is configured as follows: When the prerequisites for the ISG system to work are met, determining whether the vehicle is at a predetermined location based on the current location information of the vehicle; When it is determined that the vehicle is at a predetermined position, a signal is generated to disable the ISG system; When it is determined that the vehicle is not at the predetermined position, determining whether there is another vehicle in front of the vehicle based on the road condition information in front of the vehicle; When it is determined that there is no other vehicle ahead of the vehicle, determining whether there is a traffic light ahead of the vehicle based on the road condition information ahead of the vehicle; When it is determined that there is no traffic light ahead of the vehicle, generating a signal to disable the ISG system; When it is determined that there is a traffic light ahead of the vehicle, determining whether the green light, the yellow light, and / or the red light enters the countdown for a second predetermined time based on the traffic light time information; When it is determined that the green light or the red light enters the countdown for the second predetermined time, a signal is generated to disable the ISG system; When it is determined that the yellow light or the red light has not entered the countdown for the second predetermined time, a signal for operating the ISG system is generated.

6. The device for controlling the operating mode of the ISG system of a vehicle according to claim 5, wherein: The control device is configured to: when there is another vehicle in front of the vehicle, determine whether the vehicle in front is stopped; When it is determined that the vehicle ahead has not stopped, a signal is generated to disable the ISG system; When it is determined that the vehicle ahead is stopped, determining whether there is a traffic light ahead of the vehicle based on the road condition information ahead of the vehicle; When it is determined that there is no traffic light ahead of the vehicle, generating a signal to disable the ISG system; When it is determined that there is a traffic light ahead of the vehicle, determining whether the green light, the yellow light, and / or the red light enters the countdown for a second predetermined time based on the traffic light time information; When it is determined that the green light or the red light enters the countdown for the second predetermined time, a signal is generated to disable the ISG system; When it is determined that the yellow light or the red light has not entered the countdown for the second predetermined time, a signal for operating the ISG system is generated.

7. The device for controlling the working mode of the ISG system of a vehicle according to claim 2, wherein: The control device is configured to: when the ISG system operation mode is selected as the manual mode, when the prerequisite for the operation of the ISG system is met, determine whether the vehicle is at a predetermined position based on the current position information of the vehicle; When it is determined that the vehicle is at a predetermined position, a signal is generated to disable the ISG system; When it is determined that the vehicle is not at the predetermined position, a prompt message is displayed on the display device, and whether to operate the ISG system is selected according to the prompt message; When the ISG system operation is selected, a signal is generated to enable the ISG system to operate; When the ISG system inoperative is selected, a signal for inoperative the ISG system is generated.

8. The device for controlling the working mode of the ISG system of a vehicle according to claim 1, wherein: The prerequisites for the operation of the ISG system include: the driver's seat belt is fastened, the driver's side door and engine hood are closed, the brake vacuum pressure is sufficient, the battery sensor is activated and the battery is fully charged, the outside temperature is appropriate, the vehicle stops after driving at a speed of more than 10km / h, the air conditioning control system meets the conditions, the vehicle is fully preheated, and the steering wheel is turned less than 180 degrees before the vehicle stops.

9. The device for controlling the working mode of the ISG system of a vehicle according to claim 1, wherein: The ISG system working mode selection button is arranged on the steering wheel; The ISG system working mode selection button includes an automatic shift button, a + shift button and a - shift button; When the automatic shift button is pressed, the ISG system working mode switches to automatic mode. When the automatic shift button is pressed again, the ISG system working mode switches to manual mode. When the ISG system working mode is manual mode, when the + shift button is pressed, the ISG system works, and when the - shift button is pressed, the ISG system does not work.

10. The device for controlling the working mode of the ISG system of a vehicle according to claim 6 or 7, wherein: When the ISG system is working, the engine stops working and the automatic parking function is turned on; When it is determined based on the road condition information in front of the vehicle that the vehicle ahead is moving, or when the accelerator pedal is depressed, or when the green light or red light enters the third predetermined countdown time, or when the gear is shifted to the R gear, or when the battery power or voltage is lower than a predetermined value, or when the battery temperature is higher than a predetermined value, or when the brake vacuum pressure is insufficient, or when the working state of the air conditioning system requires starting the engine, or when the steering wheel rotation angle exceeds a predetermined value, or when the vehicle rolls and the speed exceeds 2 km / h, or when the door is opened, or the engine hood is opened, or the seat belt is unfastened, the engine enters the starting working state. The automatic parking function is only released when the accelerator pedal is depressed.

11. A method for controlling an ISG system operating mode of a vehicle, comprising: Receive a selection of an ISG system working mode through an ISG system working mode selection button, wherein the ISG system working mode includes a manual mode and an automatic mode; Get the current location information of the vehicle; Determine whether the prerequisites for the ISG system to work are met; When the prerequisite for the operation of the ISG system is met, whether to operate the ISG system is determined based on the current position information of the vehicle.

12. The method for controlling the operating mode of the ISG system of a vehicle according to claim 11, further comprising: Displays the selected ISG system working mode.

13. The method for controlling the operating mode of the ISG system of a vehicle according to claim 12, further comprising: Obtain the road condition information and traffic light time information in front of the vehicle; When the ISG system operation mode is selected as the automatic mode, when the prerequisites for the operation of the ISG system are met, it is determined whether to operate the ISG system based on the current position information of the vehicle, the road condition information in front of the vehicle, and the traffic light time information.

14. The method for controlling the operating mode of the ISG system of a vehicle according to claim 13, further comprising, before determining whether a prerequisite for the operation of the ISG system is satisfied: Get navigation information of the vehicle; Calculating the travel distance of the vehicle based on the navigation information; Predicting engine operating time based on navigation information; comparing the predicted engine operating time with a first predetermined time based on the navigation information; When it is predicted that the engine operation time is less than or equal to the first predetermined time, a signal is sent to the control device to disable the ISG system.

15. The method for controlling the operating mode of the ISG system of a vehicle according to claim 14, further comprising: When the prerequisites for the ISG system to work are met, determining whether the vehicle is at a predetermined location based on the current location information of the vehicle; When it is determined that the vehicle is at a predetermined position, a signal is generated to disable the ISG system; When it is determined that the vehicle is not at the predetermined position, determining whether there is another vehicle in front of the vehicle based on the road condition information in front of the vehicle; When it is determined that there is no other vehicle ahead of the vehicle, determining whether there is a traffic light ahead of the vehicle based on the road condition information ahead of the vehicle; When it is determined that there is no traffic light ahead of the vehicle, generating a signal to disable the ISG system; When it is determined that there is a traffic light ahead of the vehicle, determining whether the green light, the yellow light, and / or the red light enters the countdown for a second predetermined time based on the traffic light time information; When it is determined that the green light or the red light enters the countdown for the second predetermined time, a signal is generated to disable the ISG system; When it is determined that the yellow light or the red light has not entered the countdown for the second predetermined time, a signal for operating the ISG system is generated.

16. The method for controlling the operating mode of the ISG system of a vehicle according to claim 15, further comprising: When there are other vehicles in front of the vehicle, determine whether the vehicle in front has stopped; When it is determined that the vehicle ahead has not stopped, a signal is generated to disable the ISG system; When it is determined that the vehicle ahead is stopped, determining whether there is a traffic light ahead of the vehicle based on the road condition information ahead of the vehicle; When it is determined that there is no traffic light ahead of the vehicle, generating a signal to disable the ISG system; When it is determined that there is a traffic light ahead of the vehicle, determining whether the green light, the yellow light, and / or the red light enters the countdown for a second predetermined time based on the traffic light time information; When it is determined that the green light or the red light enters the countdown for the second predetermined time, a signal is generated to disable the ISG system; When it is determined that the yellow light or the red light has not entered the countdown for the second predetermined time, a signal for operating the ISG system is generated.

17. The method for controlling the operating mode of the ISG system of a vehicle according to claim 12, further comprising: In the case where the ISG system operation mode is selected as the manual mode, when the prerequisite for the operation of the ISG system is met, determining whether the vehicle is at a predetermined position based on the current position information of the vehicle; When it is determined that the vehicle is at a predetermined position, a signal is generated to disable the ISG system; When it is determined that the vehicle is not at the predetermined location, a prompt message is displayed on the display device; Receive a selection of whether the ISG system is working according to the prompt information; When the ISG system operation is selected, a signal is generated to enable the ISG system to operate; When the ISG system inoperative is selected, a signal for inoperative the ISG system is generated.

18. The method for controlling the operating mode of the ISG system of a vehicle according to claim 11, wherein: The prerequisites for the operation of the ISG system include: the driver's seat belt is fastened, the driver's side door and engine hood are closed, the brake vacuum pressure is sufficient, the battery sensor is activated and the battery is fully charged, the outside temperature is appropriate, the vehicle stops after driving at a speed of more than 10km / h, the air conditioning control system meets the conditions, the vehicle is fully preheated, and the steering wheel is turned less than 180 degrees before the vehicle stops.

19. The method for controlling the operating mode of the ISG system of a vehicle according to claim 11, wherein: The ISG system working mode selection button is arranged on the steering wheel; The ISG system working mode selection button includes an automatic shift button, a + shift button and a - shift button; When the automatic shift button is pressed, the ISG system working mode switches to automatic mode. When the automatic shift button is pressed again, the ISG system working mode switches to manual mode. When the ISG system working mode is manual mode, when the + shift button is pressed, the ISG system works, and when the - shift button is pressed, the ISG system does not work.

20. The method for controlling the operating mode of the ISG system of a vehicle according to claim 16 or 17, wherein: When the ISG system is working, the engine stops working and the automatic parking function is turned on; When it is determined based on the road condition information in front of the vehicle that the vehicle ahead is moving, or when the accelerator pedal is depressed, or when the green light or red light enters the third predetermined countdown time, or when the gear is shifted to the R gear, or when the battery power or voltage is lower than a predetermined value, or when the battery temperature is higher than a predetermined value, or when the brake vacuum pressure is insufficient, or when the working state of the air conditioning system requires starting the engine, or when the steering wheel rotation angle exceeds a predetermined value, or when the vehicle rolls and the speed exceeds 2 km / h, or when the door is opened, or the engine hood is opened, or the seat belt is unfastened, the engine enters the starting working state. The automatic parking function is only released when the accelerator pedal is depressed.

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