Hybrid electric vehicle and power generation method, device and vehicle controller thereof

Abstract

The present invention discloses a hybrid vehicle and a power generation method, device and vehicle controller thereof, wherein the method comprises: obtaining the position information of the hybrid vehicle, the proportion of different vehicle speed intervals within a preset time, and the proportion of different slope intervals of the road where the hybrid vehicle is located within the preset time; determining the current working condition of the hybrid vehicle according to the position information, the proportion of different vehicle speed intervals and the proportion of different slope intervals; obtaining the corresponding target power generation according to the working condition; and controlling the hybrid vehicle to generate power according to the target power generation. Thus, by obtaining the position information of the hybrid vehicle, the proportion of different vehicle speed intervals and the proportion of different slope intervals to determine the current working condition, the prediction of the vehicle driving condition is made more reasonable, and at the same time, different power generation strategies are adopted to generate power under different working conditions, which meets the whole vehicle power generation demand of the hybrid vehicle under low SOC state under different working conditions, thereby achieving the purpose of improving the fuel economy of the hybrid vehicle.

Description

Technical Field

[0001] The present invention relates to the technical field of hybrid electric vehicles, and in particular to a hybrid electric vehicle and a power generation method and device thereof, and a whole vehicle controller. Background Art

[0002] With the rapid development of hybrid vehicles, the whole vehicle power generation strategy of hybrid vehicles has become increasingly important. The existing whole vehicle power generation strategy is to obtain driving signals based on the driver's behavior and actions, and then judge the driving condition of the whole vehicle. However, this whole vehicle power generation strategy only judges the working condition through the obtained driving signals. If the driver is in a fatigue driving state, reasonable driving signals cannot be obtained, and thus the driving condition of the vehicle cannot be reasonably predicted. At the same time, the whole vehicle power generation strategy is relatively single and fixed, and cannot meet the whole vehicle power generation needs under low SOC state, which reduces the fuel economy of hybrid vehicles. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems in the related art to a certain extent. To this end, the first purpose of the present invention is to propose a method for generating electricity for a hybrid electric vehicle, which determines the current working condition by obtaining the position information of the hybrid electric vehicle, the proportion of different vehicle speed intervals and the proportion of different slope intervals, so that the prediction of the vehicle driving condition is more reasonable, and at the same time, by controlling the hybrid electric vehicle to adopt different power generation strategies to generate electricity under different working conditions, the power generation demand of the hybrid electric vehicle under low SOC state under different working conditions is met, thereby achieving the purpose of improving the fuel economy of the hybrid electric vehicle.

[0004] A second objective of the present invention is to provide a power generation device for a hybrid vehicle.

[0005] The third object of the present invention is to provide a vehicle controller.

[0006] A fourth objective of the present invention is to provide a hybrid vehicle.

[0007] To achieve the above-mentioned purpose, a first embodiment of the present invention proposes a method for generating electricity for a hybrid vehicle, the method comprising: obtaining the position information of the hybrid vehicle, the proportion of different vehicle speed intervals within a preset time, and the proportion of different slope intervals of the road on which the hybrid vehicle is located within the preset time; determining the current operating condition of the hybrid vehicle according to the position information, the proportion of different vehicle speed intervals, and the proportion of different slope intervals; obtaining the corresponding target power generation according to the operating condition; and controlling the hybrid vehicle to generate electricity according to the target power generation.

[0008] According to the power generation method of the hybrid vehicle of the embodiment of the present invention, the position information of the hybrid vehicle, the proportion of different vehicle speed intervals within a preset time, and the proportion of different slope intervals of the road where the hybrid vehicle is located within the preset time are obtained, and the current working condition of the hybrid vehicle is determined according to the obtained position information, the proportion of different vehicle speed intervals, and the proportion of different slope intervals, and the corresponding target power generation is obtained according to the current working condition, and the hybrid vehicle is controlled to generate power according to the target power generation. Therefore, by obtaining the position information of the hybrid vehicle, the proportion of different vehicle speed intervals, and the proportion of different slope intervals to determine the current working condition, the prediction of the vehicle driving condition is made more reasonable, and at the same time, by controlling the hybrid vehicle to use different power generation strategies to generate power under different working conditions, the power generation demand of the hybrid vehicle under low SOC state under different working conditions is met, thereby achieving the purpose of improving the fuel economy of the hybrid vehicle.

[0009] According to one embodiment of the present invention, the current working condition of the hybrid vehicle is determined according to the position information, the proportion of different speed intervals and the proportion of different slope intervals, including: when the position information is an urban road, the proportion of the first speed interval is greater than the first proportion threshold, and the proportion of the first slope interval is less than the fourth proportion threshold, the working condition is determined to be an urban condition; when the position information is a provincial road / suburban road, the proportion of the second speed interval is greater than the second proportion threshold, and the proportion of the first slope interval is less than the fourth proportion threshold, the working condition is determined to be a provincial road / suburban condition, wherein the vehicle speed of the second speed interval is greater than the vehicle speed of the first speed interval; when the position information is a highway, the proportion of the third speed interval is greater than the third proportion threshold, and the proportion of the first slope interval is less than the fourth proportion threshold, the working condition is determined to be a highway condition, wherein the vehicle speed of the third speed interval is greater than the vehicle speed of the second speed interval; when the proportion of the first slope interval is greater than or equal to the fourth proportion threshold, the working condition is determined to be a mountain road condition, wherein the proportion of the first slope interval is the proportion of the slope greater than the first slope.

[0010] According to one embodiment of the present invention, obtaining a corresponding target power generation according to operating conditions includes: obtaining an initial power generation of the hybrid vehicle; obtaining a corresponding correction coefficient according to the operating conditions; and correcting the initial power generation according to the correction coefficient to obtain the target power generation.

[0011] According to one embodiment of the present invention, a corresponding correction coefficient is obtained according to the operating condition, including: when the operating condition is an urban condition, the correction coefficient is a first coefficient; when the operating condition is a provincial road / suburban condition, the correction coefficient is a second coefficient; when the operating condition is a mountain road condition, the correction coefficient is a third coefficient; when the operating condition is a high-speed condition, the correction coefficient is a fourth coefficient; wherein, when the current SOC of the power battery in the hybrid vehicle is greater than the SOC balance point, the first coefficient, the second coefficient, the third coefficient and the fourth coefficient are all 1, and when the SOC is less than or equal to the SOC balance point, the first coefficient, the second coefficient, the third coefficient and the fourth coefficient are all greater than 1, and the fourth coefficient>the third coefficient>the second coefficient>the first coefficient.

[0012] According to one embodiment of the present invention, obtaining the initial power generation of the hybrid vehicle includes: obtaining the driving power requirement of the hybrid vehicle and the current SOC of the power battery; and obtaining the initial power generation according to the driving power requirement and the current SOC.

[0013] According to an embodiment of the present invention, when the driving power requirement is constant, the initial power generation is negatively correlated with the current SOC; when the current SOC is constant, the initial power generation is positively correlated with the driving power requirement.

[0014] According to one embodiment of the present invention, the method also includes: obtaining the driving demand power of the hybrid vehicle and the current SOC of the power battery; when it is determined that the hybrid vehicle needs to be controlled to generate electricity based on the driving demand power and the current SOC, obtaining the location information of the hybrid vehicle, the proportion of different vehicle speed intervals within a preset time, and the proportion of different slope intervals of the road on which the hybrid vehicle is located within the preset time.

[0015] According to one embodiment of the present invention, after obtaining the driving demand power of the hybrid vehicle and the current SOC of the power battery, the method also includes: determining the corresponding SOC power generation interval according to the driving demand power, and if the current SOC falls within the SOC power generation interval, determining that the hybrid vehicle needs to be controlled to generate electricity; or, determining the corresponding driving demand power power generation interval according to the current SOC, and if the driving demand power falls within the driving demand power power generation interval, determining that the hybrid vehicle needs to be controlled to generate electricity.

[0016] To achieve the above-mentioned purpose, the second embodiment of the present invention proposes a power generation device for a hybrid vehicle, which includes: an acquisition module, used to obtain the position information of the hybrid vehicle, the proportion of different vehicle speed intervals within a preset time, and the proportion of different slope intervals on the road where the hybrid vehicle is located within the preset time; an operating condition identification module, used to determine the current operating condition of the hybrid vehicle based on the position information, the proportion of different vehicle speed intervals, and the proportion of different slope intervals; a power generation acquisition module, used to obtain the corresponding target power generation according to the operating condition; and a control module, used to control the hybrid vehicle to generate electricity based on the target power generation.

[0017] According to the power generation device of the hybrid vehicle of the embodiment of the present invention, the acquisition module acquires the location information of the hybrid vehicle, the proportion of different vehicle speed intervals within a preset time, and the proportion of different slope intervals of the road where the hybrid vehicle is located within the preset time, and the working condition identification module determines the current working condition of the hybrid vehicle according to the acquired location information, the proportion of different vehicle speed intervals, and the proportion of different slope intervals, and the power generation acquisition module acquires the corresponding target power generation according to the current working condition, and the control module controls the hybrid vehicle to generate power according to the target power generation. Therefore, by acquiring the location information of the hybrid vehicle, the proportion of different vehicle speed intervals, and the proportion of different slope intervals to determine the current working condition, the vehicle driving condition prediction is more reasonable, and at the same time, by controlling the hybrid vehicle to use different power generation strategies to generate power under different working conditions, the power generation demand of the hybrid vehicle under low SOC state under different working conditions is met, thereby achieving the purpose of improving the fuel economy of the hybrid vehicle.

[0018] To achieve the above-mentioned purpose, the third aspect of the present invention proposes a vehicle controller, including: a memory, a processor, and a hybrid vehicle power generation program stored in the memory and executable on the processor. When the processor executes the program, the hybrid vehicle power generation method as in the first aspect of the embodiment is implemented.

[0019] According to the vehicle controller of the embodiment of the present invention, through the above-mentioned hybrid vehicle power generation method, the current working condition is determined by obtaining the position information of the hybrid vehicle, the proportion of different vehicle speed intervals and the proportion of different slope intervals, so that the vehicle driving condition prediction is more reasonable. At the same time, by controlling the hybrid vehicle to adopt different power generation strategies to generate electricity under different working conditions, the vehicle power generation needs of the hybrid vehicle in low SOC states under different working conditions are met, thereby achieving the purpose of improving the fuel economy of the hybrid vehicle.

[0020] To achieve the above-mentioned object, a fourth embodiment of the present invention provides a hybrid vehicle, comprising a power generation device of the hybrid vehicle in the second embodiment.

[0021] The hybrid vehicle according to the embodiment of the present invention uses the power generation device of the hybrid vehicle to determine the current operating condition by acquiring the position information of the hybrid vehicle, the proportion of different speed intervals and the proportion of different slope intervals, so that the vehicle driving condition prediction is more reasonable. At the same time, by controlling the hybrid vehicle to adopt different power generation strategies to generate electricity under different operating conditions, the power generation needs of the hybrid vehicle in low SOC states under different operating conditions are met, thereby achieving the purpose of improving the fuel economy of the hybrid vehicle.

[0022] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a flow chart of a method for generating electricity for a hybrid vehicle according to an embodiment of the present invention;

[0024] Figure 2 A flowchart of obtaining a corresponding target power generation according to working conditions according to an embodiment of the present invention;

[0025] Figure 3 A schematic diagram of a method for generating electricity for a hybrid vehicle according to an embodiment of the present invention;

[0026] Figure 4 The figure is a schematic structural diagram of a power generation device of a hybrid vehicle according to an embodiment of the present invention. DETAILED DESCRIPTION

[0027] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0028] The hybrid vehicle and its power generation method, device and vehicle controller chip provided by the embodiments of the present invention are described below with reference to the accompanying drawings.

[0029] Figure 1 FIG. 1 is a flow chart of a method for generating electricity for a hybrid vehicle according to an embodiment of the present invention. Figure 1 As shown, the power generation method of the hybrid vehicle includes the following steps:

[0030] Step S101, obtaining the location information of the hybrid vehicle, the proportions of different vehicle speed intervals within a preset time, and the proportions of different slope intervals of the road on which the hybrid vehicle is located within the preset time.

[0031] It should be noted that if only a single fixed power generation strategy is adopted during the driving of a hybrid vehicle, it will be difficult to meet the power generation needs of the hybrid vehicle when encountering different driving conditions. In order to ensure that the hybrid vehicle engine can operate at the optimal point under various driving conditions, reduce the fuel consumption of the hybrid vehicle, and achieve the purpose of improving the fuel economy of the hybrid vehicle, it is necessary to obtain the optimal power generation strategy of the hybrid vehicle under different driving conditions, and adopt the corresponding power generation strategy according to the current driving conditions of the hybrid vehicle, so as to meet the power generation needs of the hybrid vehicle under different driving conditions.

[0032] Specifically, the driving environment and road condition information of the current hybrid vehicle are detected in real time through the on-board high-precision map system, GPS (Global Positioning System) and vehicle sensors, including the location, speed, acceleration, slope, ambient temperature, altitude and other data of the hybrid vehicle, and the above real-time detection data are integrated to obtain the current driving status of the hybrid vehicle. For example, the driving position of the current hybrid vehicle is obtained through the on-board high-precision map system. If the on-board high-precision map system shows that the current hybrid vehicle is traveling on a city road, the location information of the current hybrid vehicle obtained is the city road. If the on-board high-precision map system shows that the current hybrid vehicle is traveling on a provincial road / suburban road, the current hybrid vehicle obtained is the provincial road / suburban road. The location information of the hybrid vehicle is a provincial highway / suburban road. If the on-board high-precision map system shows that the hybrid vehicle is currently traveling on a highway, the location information of the hybrid vehicle is obtained as a highway; the driving speed of the hybrid vehicle can be obtained through the on-board GPS, and the proportion of different speed intervals within the preset time can be obtained according to the driving speed to form the proportion of different speed intervals; the inclination angle of the hybrid vehicle can also be obtained through the on-board vehicle sensor, and the slope of the road where the hybrid vehicle is currently traveling can be determined according to the obtained inclination angle, so as to obtain the proportion of different slope intervals of the road where the hybrid vehicle is traveling within the preset time. Since the driving status of the vehicle is obtained in real time through the on-board high-precision map system, GPS and vehicle sensors, the recognition and prediction of the current driving conditions have a certain timeliness.

[0033] Step S102, determining the current operating condition of the hybrid vehicle according to the position information, the proportions of different vehicle speed intervals and the proportions of different slope intervals.

[0034] Specifically, a comprehensive judgment is made based on the position information of the hybrid vehicle obtained above, the proportions of different vehicle speed intervals and the proportions of different slope intervals to determine the current driving condition of the hybrid vehicle.

[0035] Further, in some embodiments, the current operating condition of the hybrid vehicle is determined based on the position information, the proportion of different speed intervals and the proportion of different slope intervals, including: when the position information is an urban road, the proportion of the first speed interval is greater than the first proportion threshold, and the proportion of the first slope interval is less than the fourth proportion threshold, the operating condition is determined to be an urban condition; when the position information is a provincial road / suburban road, the proportion of the second speed interval is greater than the second proportion threshold, and the proportion of the first slope interval is less than the fourth proportion threshold, the operating condition is determined to be a provincial road / suburban condition, wherein the vehicle speed in the second speed interval is greater than the vehicle speed in the first speed interval; when the position information is a highway, the proportion of the third speed interval is greater than the third proportion threshold, and the proportion of the first slope interval is less than the fourth proportion threshold, the operating condition is determined to be a highway condition, wherein the vehicle speed in the third speed interval is greater than the speed in the second speed interval; when the proportion of the first slope interval is greater than or equal to the fourth proportion threshold, the operating condition is determined to be a mountain road condition, wherein the proportion of the first slope interval is the proportion of the slope greater than the first slope.

[0036] Specifically, when it is determined that the hybrid vehicle is currently traveling on an urban road, the driving speed of the hybrid vehicle is obtained in real time. For urban road conditions, a first speed interval and a first proportional threshold are preset in the hybrid vehicle system. Within a preset time, the proportion of time that the hybrid vehicle's driving speed is in the first speed interval within the preset time is obtained; at the same time, the slope of the current driving road is obtained in real time during the driving of the hybrid vehicle. For the driving slope, a first slope interval and a fourth proportional threshold are preset in the hybrid vehicle system. Within the preset time, the proportion of time that the hybrid vehicle's driving slope is in the first slope interval within the preset time is obtained. When the proportion of the hybrid vehicle's driving speed in the first speed interval is greater than the first proportional threshold and the proportion of the driving slope in the first slope interval is less than the fourth proportional threshold, it is determined that the current operating condition of the hybrid vehicle is an urban operating condition.

[0037] When it is determined that the hybrid vehicle is currently traveling on a provincial highway / suburban road, the driving speed of the hybrid vehicle is obtained in real time. For the road conditions of provincial highways / suburban roads, a second speed range and a second proportional threshold are preset in the hybrid vehicle system. Within a preset time, the proportion of the time that the hybrid vehicle's driving speed is in the second speed range within the preset time is obtained. It should be noted that the speed in the second speed range is greater than the speed in the first speed range. For example, the first speed range is [0km / h, 60km / h), and the second speed range is [60km / h, 80km / h). In this embodiment, In the embodiment, the first speed interval and the second speed interval may be adjacent or not adjacent. For example, the second speed interval may also be set to [65km / h, 80km / h). It is only necessary to ensure that the vehicle speed in the second speed interval is greater than the vehicle speed in the first speed interval. At the same time, during driving, the hybrid vehicle will obtain the proportion of time that the driving slope is in the first slope interval within the preset time. When the proportion of the hybrid vehicle's driving speed in the second speed interval is greater than the second proportion threshold and the proportion of the driving slope in the first slope interval is less than the fourth proportion threshold, it is determined that the current operating condition of the hybrid vehicle is a provincial road / suburban condition.

[0038] When it is determined that the hybrid vehicle is currently traveling on a highway, the driving speed of the hybrid vehicle is obtained in real time. In view of the highway road conditions, a third speed interval and a third proportional threshold are preset in the hybrid vehicle system. Within a preset time, the proportion of the time when the hybrid vehicle's driving speed is in the third speed interval within the preset time is obtained. It should be noted that the speed in the third speed interval is greater than the speed in the second speed interval. For example, the first speed interval is [60km / h, 80km / h), and the third speed interval is [80km / h, 100km / h). In this embodiment, The first speed interval and the second speed interval may be adjacent or not adjacent. For example, the second speed interval may also be set to [85km / h, 100km / h). It is only necessary to ensure that the speed in the third speed interval is greater than the speed in the second speed interval. At the same time, during driving, the hybrid vehicle will obtain the proportion of the time when the driving slope is in the first slope interval within the preset time. When the proportion of the hybrid vehicle's driving speed in the third speed interval is greater than the third proportion threshold and the proportion of the driving slope in the first slope interval is less than the fourth proportion threshold, it is determined that the current operating condition of the hybrid vehicle is a high-speed condition.

[0039] During the driving process of the hybrid vehicle, if the proportion of the time when the road slope is greater than the first slope in the preset time is greater than the fourth ratio threshold, it is determined that the current working condition of the hybrid vehicle is a mountain road condition, wherein the proportion of the first slope interval is the proportion of the slope greater than the first slope. In other words, when it is determined that the proportion of the time when the road slope of the hybrid vehicle is greater than the first slope in the preset time is greater than the fourth ratio threshold, it is not necessary to consider the location information and speed information of the hybrid vehicle, and it is uniformly determined as a mountain road condition.

[0040] It should be noted that when the hybrid vehicle cannot determine the driving condition according to the above judgment conditions, it is considered that the operating condition of the hybrid vehicle is other operating conditions.

[0041] Step S103, obtaining the corresponding target power generation according to the working conditions.

[0042] Specifically, after determining the current operating condition of the hybrid vehicle based on the position information, the proportion of different vehicle speed intervals and the proportion of different slope intervals, the target power generation power of the hybrid vehicle under different operating conditions is obtained to adopt the corresponding power generation strategy to meet the power generation needs under different driving conditions.

[0043] Furthermore, in some embodiments, Figure 2 As shown, obtaining the corresponding target power generation according to the working conditions includes:

[0044] Step S201, obtaining the initial power generation of the hybrid vehicle.

[0045] In some embodiments, obtaining the initial power generation of the hybrid vehicle includes: obtaining the driving power requirement of the hybrid vehicle and the current SOC of the power battery; and obtaining the initial power generation according to the driving power requirement and the current SOC.

[0046] Specifically, during the driving of the hybrid vehicle, the current hybrid vehicle speed, acceleration, slope, temperature, altitude and other data are obtained in real time according to the on-board high-precision map system, GPS (Global Positioning System) and vehicle sensors, and the driving demand power of the hybrid vehicle is calculated according to the above-mentioned hybrid vehicle speed, acceleration, slope, temperature and altitude and other data. At the same time, the current SOC of the power battery is obtained through the hybrid vehicle system, and the initial power generation power of the hybrid vehicle is obtained based on the obtained driving demand power and the current SOC (i.e., the minimum SOC battery discharge capacity).

[0047] In some embodiments, when the driving power demand is constant, the initial power generation is negatively correlated with the current SOC; when the current SOC is constant, the initial power generation is positively correlated with the driving power demand. In other words, the initial power generation of the hybrid vehicle is determined by the driving power demand and the current SOC, and the initial power generation increases as the current SOC decreases and the driving power demand increases. When the driving power demand is constant, the initial power generation is negatively correlated with the SOC, and when the current SOC is constant, the initial power generation is positively correlated with the driving power demand.

[0048] Step S202, obtaining a corresponding correction coefficient according to the working conditions.

[0049] Specifically, a correction coefficient corresponding to the operating condition of the hybrid electric vehicle is obtained, so that the hybrid electric vehicle adopts an optimal power generation strategy when driving under the operating condition.

[0050] In some embodiments, a corresponding correction coefficient is obtained according to the operating condition, including: when the operating condition is an urban condition, the correction coefficient is a first coefficient; when the operating condition is a provincial road / suburban condition, the correction coefficient is a second coefficient; when the operating condition is a mountain road condition, the correction coefficient is a third coefficient; when the operating condition is a high-speed condition, the correction coefficient is a fourth coefficient; wherein, when the current SOC of the power battery in the hybrid vehicle is greater than the SOC balance point, the first coefficient, the second coefficient, the third coefficient and the fourth coefficient are all 1, and when the SOC is less than or equal to the SOC balance point, the first coefficient, the second coefficient, the third coefficient and the fourth coefficient are all greater than 1, and the fourth coefficient>the third coefficient>the second coefficient>the first coefficient.

[0051] Specifically, the hybrid vehicle system is preset with a first coefficient a, a second coefficient b, a third coefficient c and a fourth coefficient d according to different driving conditions, and a SOC balance point is preset in the power battery. When the current SOC of the power battery is less than or equal to the SOC balance point, the first coefficient a, the second coefficient b, the third coefficient c and the fourth coefficient d are all set to be greater than 1. That is to say, when the current SOC of the power battery is less than or equal to the SOC balance point, in order to avoid the SOC of the power battery of the whole vehicle being lower than the minimum allowable SOC and to maintain the SOC of the whole vehicle above the minimum SOC value, it is necessary to correct the power generation power of the hybrid vehicle, and the corresponding correction coefficients are different for different working conditions of the hybrid vehicle. When it is determined that the current working condition of the hybrid vehicle is an urban working condition, The correction coefficient is the first coefficient a; when it is determined that the current operating condition of the hybrid vehicle is a provincial road / suburban condition, the correction coefficient is the second coefficient b; when it is determined that the current operating condition of the hybrid vehicle is a mountain road condition, the correction coefficient is the third coefficient c; when it is determined that the current operating condition of the hybrid vehicle is a high-speed condition, the correction coefficient is the fourth coefficient d, wherein the fourth coefficient d>the third coefficient c>the second coefficient b>the first coefficient a; when the current SOC of the power battery in the hybrid vehicle is greater than the SOC balance point, the first coefficient a, the second coefficient b, the third coefficient c and the fourth coefficient d are all set to 1, that is, when the current SOC of the power battery in the hybrid vehicle is greater than the SOC balance point, no matter what operating condition the hybrid vehicle is in, the initial power generation power is not corrected.

[0052] Step S203, correcting the initial power generation according to the correction coefficient to obtain the target power generation.

[0053] Specifically, when the current SOC of the power battery is less than or equal to the SOC balance point, the target power generation under the working condition can be obtained by multiplying the initial power generation by the correction coefficient under the working condition according to the correction coefficient of the working condition, such as Figure 3 As shown in the figure, different power generation strategies are adopted for different working conditions. Under different power generation strategies, the power generation under different working conditions is calculated by different correction coefficients. While meeting the driving needs of the driver, it can avoid the situation where the SOC of the whole vehicle is lower than the minimum SOC value, so that the SOC of the whole vehicle is always maintained above the minimum SOC value, that is, the power generation needs of the whole vehicle under low SOC state in different working conditions are met; and when the current SOC of the power battery is greater than the SOC balance point, there is no need to correct the initial power generation, that is, the initial power generation of the hybrid vehicle is the target power generation of the hybrid vehicle.

[0054] It should be noted that when the hybrid vehicle is determined to be in other operating conditions, there is no need to correct the initial power generation power, that is, the initial power generation power of the hybrid vehicle is the target power generation power of the hybrid vehicle.

[0055] Step S104, controlling the hybrid vehicle to generate electricity according to the target generated power.

[0056] Specifically, after obtaining the corrected target power generation, when the hybrid vehicle is traveling under different operating conditions, the hybrid vehicle is controlled to generate power according to the target power generation corrected according to the corresponding operating conditions, thereby meeting the power generation needs of the hybrid vehicle under different driving conditions.

[0057] In some embodiments, the above-mentioned hybrid vehicle power generation method also includes: obtaining the driving demand power of the hybrid vehicle and the current SOC of the power battery; when it is determined that the hybrid vehicle needs to be controlled to generate electricity based on the driving demand power and the current SOC, obtaining the location information of the hybrid vehicle, the proportion of different vehicle speed intervals within a preset time, and the proportion of different slope intervals of the road on which the hybrid vehicle is located within the preset time.

[0058] Furthermore, after obtaining the driving demand power of the hybrid vehicle and the current SOC of the power battery, the method also includes: determining the corresponding SOC power generation range according to the driving demand power, and if the current SOC falls within the SOC power generation range, determining that the hybrid vehicle needs to be controlled to generate electricity; or, determining the corresponding driving demand power power generation range according to the current SOC, and if the driving demand power falls within the driving demand power power generation range, determining that the hybrid vehicle needs to be controlled to generate electricity.

[0059] Specifically, during the driving of the hybrid vehicle, the hybrid vehicle system obtains the driving demand power and the current SOC of the power battery in real time, and determines the corresponding SOC power generation range according to the driving demand power and the corresponding driving demand power generation range according to the current SOC. If the current SOC falls within the SOC power generation range or the driving demand power falls within the driving demand power generation range, the hybrid vehicle needs to be controlled to generate electricity. Otherwise, the vehicle power generation strategy is not enabled and the hybrid vehicle continues to drive. Figure 3As shown, when it is determined that the whole vehicle power generation strategy needs to be activated, the position, speed, acceleration, slope, ambient temperature, altitude and other data of the hybrid vehicle are obtained in real time through the on-board high-precision map system, GPS and vehicle sensors, and the above real-time detection data are integrated to obtain the current position information of the hybrid vehicle, the proportion of different speed intervals within a preset time and the proportion of different slope intervals of the road where the hybrid vehicle is located within the preset time, and the current driving condition of the hybrid vehicle is determined based on the obtained position information of the hybrid vehicle, the proportion of different speed intervals and the proportion of different slope intervals, and different power generation strategies are adopted according to different driving conditions, so as to ensure that the hybrid vehicle engine can work at the optimal point under various driving conditions, realize the reduction of fuel consumption of the hybrid vehicle, and then achieve the purpose of improving the fuel economy of the hybrid vehicle.

[0060] In summary, according to the power generation method of the hybrid vehicle of the embodiment of the present invention, the position information of the hybrid vehicle, the proportion of different vehicle speed intervals within a preset time, and the proportion of different slope intervals of the road where the hybrid vehicle is located within the preset time are obtained, and the current working condition of the hybrid vehicle is determined according to the obtained position information, the proportion of different vehicle speed intervals, and the proportion of different slope intervals, and the corresponding target power generation is obtained according to the current working condition, and the hybrid vehicle is controlled to generate power according to the target power generation. Therefore, by obtaining the position information of the hybrid vehicle, the proportion of different vehicle speed intervals, and the proportion of different slope intervals to determine the current working condition, the vehicle driving condition prediction is made more reasonable, and at the same time, by controlling the hybrid vehicle to use different power generation strategies to generate power under different working conditions, the power generation demand of the hybrid vehicle under low SOC state under different working conditions is met, thereby achieving the purpose of improving the fuel economy of the hybrid vehicle.

[0061] Figure 4 FIG. 1 is a schematic diagram of a power generation device for a hybrid vehicle according to an embodiment of the present invention. Figure 4 As shown, the power generation device 100 of the hybrid vehicle includes: an acquisition module 110 , a working condition identification module 120 , a power generation acquisition module 130 and a control module 140 .

[0062] Among them, the acquisition module 110 is used to obtain the position information of the hybrid vehicle, the proportion of different vehicle speed intervals within a preset time, and the proportion of different slope intervals of the road on which the hybrid vehicle is located within the preset time; the operating condition identification module 120 is used to determine the current operating condition of the hybrid vehicle based on the position information, the proportion of different vehicle speed intervals, and the proportion of different slope intervals; the power generation acquisition module 130 is used to obtain the corresponding target power generation according to the operating condition; the control module 140 is used to control the hybrid vehicle to generate electricity according to the target power generation.

[0063] In some embodiments, the operating condition identification module 120 is also specifically used for: when the location information is an urban road, the proportion of the first speed interval is greater than the first proportion threshold, and the proportion of the first slope interval is less than the fourth proportion threshold, determining the operating condition as an urban condition; when the location information is a provincial road / suburban road, the proportion of the second speed interval is greater than the second proportion threshold, and the proportion of the first slope interval is less than the fourth proportion threshold, determining the operating condition as a provincial road / suburban condition, wherein the vehicle speed in the second speed interval is greater than the vehicle speed in the first speed interval; when the location information is a highway, the proportion of the third speed interval is greater than the third proportion threshold, and the proportion of the first slope interval is less than the fourth proportion threshold, determining the operating condition as a highway condition, wherein the vehicle speed in the third speed interval is greater than the speed in the second speed interval; when the proportion of the first slope interval is greater than or equal to the fourth proportion threshold, determining the operating condition as a mountain road condition, wherein the proportion of the first slope interval is the proportion of a slope greater than the first slope.

[0064] In some embodiments, the power generation acquisition module 130 is further used to: acquire the initial power generation of the hybrid vehicle; acquire a corresponding correction coefficient according to the working conditions; and correct the initial power generation according to the correction coefficient to obtain the target power generation.

[0065] In some embodiments, the power generation acquisition module 130 is also specifically used for: when the operating condition is an urban condition, the correction coefficient is the first coefficient; when the operating condition is a provincial road / suburban condition, the correction coefficient is the second coefficient; when the operating condition is a mountain road condition, the correction coefficient is the third coefficient; when the operating condition is a high-speed condition, the correction coefficient is the fourth coefficient; wherein, when the current SOC of the power battery in the hybrid vehicle is greater than the SOC balance point, the first coefficient, the second coefficient, the third coefficient and the fourth coefficient are all 1, and when the SOC is less than or equal to the SOC balance point, the first coefficient, the second coefficient, the third coefficient and the fourth coefficient are all greater than 1, and the fourth coefficient>the third coefficient>the second coefficient>the first coefficient.

[0066] In some embodiments, the power generation acquisition module 130 is further specifically used to: acquire the driving power requirement of the hybrid vehicle and the current SOC of the power battery; and acquire the initial power generation power according to the driving power requirement and the current SOC.

[0067] In some embodiments, when the driving demand power is constant, the initial power generation power is negatively correlated with the current SOC; when the current SOC is constant, the initial power generation power is positively correlated with the driving demand power.

[0068] In some embodiments, the acquisition module 110 is specifically used to: obtain the driving demand power of the hybrid vehicle and the current SOC of the power battery; when it is determined that the hybrid vehicle needs to be controlled to generate electricity based on the driving demand power and the current SOC, obtain the location information of the hybrid vehicle, the proportion of different vehicle speed intervals within a preset time, and the proportion of different slope intervals of the road on which the hybrid vehicle is located within a preset time.

[0069] In some embodiments, the power generation device of the above-mentioned hybrid vehicle also includes a power generation judgment module (not shown in the figure), which is specifically used to: determine the corresponding SOC power generation interval according to the driving demand power, if the current SOC falls within the SOC power generation interval, it is determined that the hybrid vehicle needs to be controlled to generate electricity; or, determine the corresponding driving demand power power generation interval according to the current SOC, if the driving demand power falls within the driving demand power power generation interval, it is determined that the hybrid vehicle needs to be controlled to generate electricity.

[0070] It should be noted that for the description of the power generation device of the hybrid vehicle in this application, please refer to the description of the power generation method of the hybrid vehicle in this application, and the details will not be repeated here.

[0071] According to the power generation device of the hybrid vehicle of the embodiment of the present invention, the acquisition module acquires the location information of the hybrid vehicle, the proportion of different vehicle speed intervals within a preset time, and the proportion of different slope intervals of the road where the hybrid vehicle is located within the preset time, and the working condition identification module determines the current working condition of the hybrid vehicle according to the acquired location information, the proportion of different vehicle speed intervals, and the proportion of different slope intervals, and the power generation acquisition module acquires the corresponding target power generation according to the current working condition, and the control module controls the hybrid vehicle to generate power according to the target power generation. Therefore, by acquiring the location information of the hybrid vehicle, the proportion of different vehicle speed intervals, and the proportion of different slope intervals to determine the current working condition, the vehicle driving condition prediction is more reasonable, and at the same time, by controlling the hybrid vehicle to use different power generation strategies to generate power under different working conditions, the power generation demand of the hybrid vehicle under low SOC state under different working conditions is met, thereby achieving the purpose of improving the fuel economy of the hybrid vehicle.

[0072] An embodiment of the present invention also provides a vehicle controller, comprising: a memory, a processor, and a hybrid vehicle power generation program stored in the memory and executable on the processor. When the processor executes the program, the hybrid vehicle power generation method described above is implemented.

[0073] According to the vehicle controller of the embodiment of the present invention, through the above-mentioned hybrid vehicle power generation method, the current working condition is determined by obtaining the position information of the hybrid vehicle, the proportion of different vehicle speed intervals and the proportion of different slope intervals, so that the vehicle driving condition prediction is more reasonable. At the same time, by controlling the hybrid vehicle to adopt different power generation strategies to generate electricity under different working conditions, the vehicle power generation needs of the hybrid vehicle in low SOC states under different working conditions are met, thereby achieving the purpose of improving the fuel economy of the hybrid vehicle.

[0074] An embodiment of the present invention further provides a hybrid vehicle, comprising the above-mentioned power generation device for the hybrid vehicle.

[0075] The hybrid vehicle according to the embodiment of the present invention uses the power generation device of the hybrid vehicle to determine the current operating condition by acquiring the position information of the hybrid vehicle, the proportion of different speed intervals and the proportion of different slope intervals, so that the vehicle driving condition prediction is more reasonable. At the same time, by controlling the hybrid vehicle to adopt different power generation strategies to generate electricity under different operating conditions, the power generation needs of the hybrid vehicle in low SOC states under different operating conditions are met, thereby achieving the purpose of improving the fuel economy of the hybrid vehicle.

[0076] It should be noted that the logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as a sequenced list of executable instructions for implementing logical functions, and can be specifically implemented in any computer-readable medium for use by an instruction execution system, device or apparatus (such as a computer-based system, a system including a processor, or other system that can fetch instructions from an instruction execution system, device or apparatus and execute instructions), or in combination with these instruction execution systems, devices or apparatuses. For the purposes of this specification, "computer-readable medium" can be any device that can contain, store, communicate, propagate or transmit a program for use by an instruction execution system, device or apparatus, or in combination with these instruction execution systems, devices or apparatuses. More specific examples of computer-readable media (a non-exhaustive list) include the following: an electrical connection portion with one or more wirings (electronic device), a portable computer disk box (magnetic device), a random access memory (RAM), a read-only memory (ROM), an erasable and programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disk read-only memory (CDROM). In addition, the computer-readable medium may even be paper or other suitable medium on which the program is printed, since the program may be obtained electronically, for example, by optically scanning the paper or other medium and then editing, interpreting or processing in other suitable ways if necessary, and then stored in a computer memory.

[0077] It should be understood that the various parts of the present invention can be implemented by hardware, software, firmware or a combination thereof. In the above-mentioned embodiments, a plurality of steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, it can be implemented by any one of the following technologies known in the art or their combination: a discrete logic circuit having a logic gate circuit for implementing a logic function for a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0078] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0079] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0080] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0081] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A method for generating electricity for a hybrid vehicle, characterized in that: The method comprises: Acquire the location information of the hybrid vehicle, the proportion of different vehicle speed intervals within a preset time, and the proportion of different slope intervals of the road where the hybrid vehicle is located within the preset time; Determining the current operating condition of the hybrid vehicle according to the position information, the proportions of the different vehicle speed intervals, and the proportions of the different slope intervals; Obtaining a corresponding target power generation according to the operating conditions; controlling the hybrid vehicle to generate electricity according to the target generated power; The obtaining of the corresponding target power generation according to the working condition comprises: Acquiring the initial power generation of the hybrid electric vehicle; Obtaining a corresponding correction factor according to the working conditions; Correcting the initial power generation according to the correction coefficient to obtain the target power generation; The obtaining of a corresponding correction coefficient according to the working condition comprises: When the operating condition is an urban operating condition, the correction coefficient is a first coefficient; When the working condition is a provincial road / suburban working condition, the correction coefficient is the second coefficient; When the working condition is a mountain road condition, the correction coefficient is the third coefficient; When the working condition is a high-speed working condition, the correction coefficient is the fourth coefficient; Among them, when the current SOC of the power battery in the hybrid vehicle is greater than the SOC balance point, the first coefficient, the second coefficient, the third coefficient and the fourth coefficient are all 1; when the SOC is less than or equal to the SOC balance point, the first coefficient, the second coefficient, the third coefficient and the fourth coefficient are all greater than 1, and the fourth coefficient>the third coefficient>the second coefficient>the first coefficient.

2. The method according to claim 1, characterized in that The determining the current working condition of the hybrid vehicle according to the position information, the proportions of the different vehicle speed intervals and the proportions of the different slope intervals includes: When the location information is an urban road, the first vehicle speed interval accounts for more than a first ratio threshold, and the first slope interval accounts for less than a fourth ratio threshold, determining that the operating condition is an urban operating condition; When the location information is a provincial road / suburban road, the proportion of the second speed interval is greater than the second proportion threshold, and the proportion of the first slope interval is less than the fourth proportion threshold, the operating condition is determined to be a provincial road / suburban condition, wherein the vehicle speed in the second speed interval is greater than the vehicle speed in the first speed interval; When the location information is a highway, the proportion of the third speed interval is greater than the third proportion threshold, and the proportion of the first slope interval is less than the fourth proportion threshold, the operating condition is determined to be a high-speed operating condition, wherein the vehicle speed in the third speed interval is greater than the vehicle speed in the second speed interval; When the proportion of the first slope interval is greater than or equal to the fourth ratio threshold, the operating condition is determined to be a mountain road condition, wherein the proportion of the first slope interval is the proportion of slopes greater than the first slope.

3. The method according to claim 1, characterized in that The obtaining of the initial power generation of the hybrid vehicle comprises: Obtaining the driving demand power of the hybrid electric vehicle and the current SOC of the power battery; The initial generated power is obtained according to the driving demand power and the current SOC.

4. The method according to claim 3, characterized in that When the driving demand power is constant, the initial power generation power is negatively correlated with the current SOC; when the current SOC is constant, the initial power generation power is positively correlated with the driving demand power.

5. The method according to any one of claims 1 to 4, characterized in that The method further comprises: Obtaining the driving demand power of the hybrid electric vehicle and the current SOC of the power battery; When it is determined that the hybrid vehicle needs to be controlled to generate electricity based on the driving demand power and the current SOC, the position information of the hybrid vehicle, the proportion of different vehicle speed intervals within a preset time, and the proportion of different slope intervals of the road on which the hybrid vehicle is located within the preset time are obtained.

6. The method according to claim 5, characterized in that After obtaining the driving demand power of the hybrid vehicle and the current SOC of the power battery, the method further includes: Determining a corresponding SOC power generation interval according to the driving demand power, and if the current SOC falls within the SOC power generation interval, determining that the hybrid vehicle needs to be controlled to generate electricity; Alternatively, a corresponding driving demand power generation interval is determined according to the current SOC, and if the driving demand power falls within the driving demand power generation interval, it is determined that the hybrid vehicle needs to be controlled to generate electricity.

7. A power generation device for a hybrid vehicle, characterized in that: The device comprises: An acquisition module, used to acquire the position information of the hybrid vehicle, the proportion of different vehicle speed intervals within a preset time, and the proportion of different slope intervals of the road where the hybrid vehicle is located within the preset time; A working condition identification module, used for determining the current working condition of the hybrid vehicle according to the position information, the proportions of the different vehicle speed intervals and the proportions of the different slope intervals; A power generation acquisition module, used to acquire the corresponding target power generation according to the working conditions; A control module, used for controlling the hybrid electric vehicle to generate electricity according to the target power generation; The obtaining of the corresponding target power generation according to the working condition comprises: Acquiring the initial power generation of the hybrid electric vehicle; Obtaining a corresponding correction factor according to the working conditions; Correcting the initial power generation according to the correction coefficient to obtain the target power generation; The obtaining of a corresponding correction coefficient according to the working condition comprises: When the operating condition is an urban operating condition, the correction coefficient is a first coefficient; When the working condition is a provincial road / suburban working condition, the correction coefficient is the second coefficient; When the working condition is a mountain road condition, the correction coefficient is the third coefficient; When the working condition is a high-speed working condition, the correction coefficient is the fourth coefficient; Among them, when the current SOC of the power battery in the hybrid vehicle is greater than the SOC balance point, the first coefficient, the second coefficient, the third coefficient and the fourth coefficient are all 1; when the SOC is less than or equal to the SOC balance point, the first coefficient, the second coefficient, the third coefficient and the fourth coefficient are all greater than 1, and the fourth coefficient>the third coefficient>the second coefficient>the first coefficient.

8. A vehicle controller, characterized in that: include: A memory, a processor, and a power generation program for a hybrid electric vehicle stored in the memory and executable on the processor. When the processor executes the program, a power generation method for a hybrid electric vehicle according to any one of claims 1 to 6 is implemented.

9. A hybrid vehicle, characterized in that: A hybrid vehicle comprising the power generation device according to claim 7.

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