Electric vehicle and method, device and storage medium for coasting warning thereof

Abstract

The application discloses an electric vehicle and a coasting reminding method and device thereof and a storage medium, wherein the method comprises the following steps: acquiring current driving information and historical driving information of the electric vehicle, wherein the current driving information comprises driving information, following information and road information; acquiring a coasting parking area and a predicted coasting distance according to the current driving information, and correcting the predicted coasting distance according to the historical driving information; acquiring a distance between the electric vehicle and the coasting parking area, and reminding a user to coast according to a difference between the distance between the electric vehicle and the coasting parking area and the corrected predicted coasting distance. Thus, the coasting parking area and the predicted coasting distance are acquired based on the current driving information, and the predicted coasting distance is corrected according to the historical driving information, so that the user is reminded to coast at a proper time, the vehicle is enabled to perform energy recovery and accurately coast to the coasting parking area, and therefore, the energy utilization rate of the vehicle is improved, and the coasting safety is ensured.

Description

Technical Field

[0001] This invention relates to the field of energy recovery technology for electric vehicles, and in particular to a coasting reminder method for electric vehicles, a computer-readable storage medium, a coasting reminder device for electric vehicles, and an electric vehicle. Background Technology

[0002] Currently, electric vehicles typically employ energy recovery technology to improve energy efficiency. For example, energy recovery technology converts the kinetic energy of an electric vehicle during deceleration or coasting into electrical energy and stores it in the battery. Specifically, energy recovery technology includes regenerative braking and regenerative coasting. Regenerative braking is suitable for driving situations where the user presses the brake pedal to control the electric vehicle's deceleration, while regenerative coasting is suitable for driving situations where the user releases both the accelerator and brake pedals to control the electric vehicle's coasting. Since some energy is lost through mechanical friction during regenerative braking, regenerative coasting is more efficient. Therefore, increasing the frequency of regenerative coasting during vehicle operation can effectively improve the vehicle's energy efficiency. However, in actual driving, users often find it difficult to determine when to initiate coasting to allow for regenerative coasting and accurately coast to a parking area. Summary of the Invention

[0003] This invention aims to at least partially solve one of the technical problems in the related art. Therefore, the first objective of this invention is to provide a coasting reminder method for electric vehicles, which can remind the user of coasting at an appropriate time, enabling the vehicle to recover coasting energy and accurately coast to a coasting parking area, thereby improving the vehicle's energy utilization rate and ensuring coasting safety.

[0004] A second objective of this invention is to provide a computer-readable storage medium.

[0005] The third objective of this invention is to provide a coasting reminder device for electric vehicles.

[0006] The fourth objective of this invention is to provide an electric vehicle.

[0007] To achieve the above objectives, the first aspect of the present invention provides a method for providing coasting reminders for electric vehicles, comprising: acquiring current driving information and historical driving information of the electric vehicle, wherein the current driving information includes driving information, following information, and road information; acquiring a coasting parking area and a predicted coasting distance based on the current driving information, and correcting the predicted coasting distance based on the historical driving information; acquiring the distance between the electric vehicle and the coasting parking area, and providing a coasting reminder to the user based on the difference between the distance between the electric vehicle and the coasting parking area and the corrected predicted coasting distance.

[0008] The coasting reminder method for electric vehicles according to embodiments of the present invention obtains a coasting parking area and a predicted coasting distance based on current driving information, and corrects the predicted coasting distance based on historical driving information, so as to remind the user to coast at an appropriate time, enabling the vehicle to recover coasting energy and coast accurately to the coasting parking area, thereby improving the energy utilization rate of the vehicle and ensuring coasting safety.

[0009] In addition, the coasting reminder method for electric vehicles according to the above embodiments of the present invention may also have the following additional technical features: According to one embodiment of the present invention, obtaining a coasting parking area based on current driving information includes: if it is determined based on following information that the electric vehicle is not in a following state, then obtaining a coasting parking area based on road information; if it is determined based on road information and following information that the electric vehicle is in a following state, then obtaining a coasting parking area based on following information.

[0010] According to one embodiment of the present invention, the predicted gliding distance is obtained by the following formula: ,in, To predict the glide distance, For the speed of the vehicle, For the quality of the vehicle, This refers to the sliding resistance experienced by the vehicle.

[0011] According to one embodiment of the present invention, correcting the predicted gliding distance based on historical driving information includes: analyzing the historical driving information using a K-means classification algorithm to obtain the user's driving style; obtaining a gliding distance correction coefficient based on the user's driving style; and correcting the predicted gliding distance based on the gliding distance correction coefficient.

[0012] According to one embodiment of the present invention, obtaining the distance between an electric vehicle and a coasting parking area, and providing a coasting reminder to a user based on the difference between the distance between the electric vehicle and the coasting parking area and the corrected predicted coasting distance, includes: if it is determined from following information that the electric vehicle is not in a following state, then providing a coasting reminder to the user when the difference between the distance between the electric vehicle and the coasting parking area and the corrected predicted coasting distance is less than a preset distance threshold; if it is determined from following information that the electric vehicle is in a following state, then providing a coasting reminder to the user based on driving information and following information.

[0013] According to one embodiment of the present invention, a coasting reminder is given to the user based on driving information and following information, including: obtaining the following distance of the electric vehicle, the deceleration of the electric vehicle during coasting, and the deceleration of the vehicle in front; if the following distance of the electric vehicle is greater than a first preset distance, or if the following distance of the electric vehicle is less than the first preset distance but greater than a second preset distance, and the deceleration of the vehicle in front is less than the deceleration of the electric vehicle during coasting, then a coasting reminder is given to the user.

[0014] According to one embodiment of the present invention, the method of providing a coasting reminder to the user based on driving information and following information further includes: if the following distance of the electric vehicle is less than a second preset distance, or if the following distance of the electric vehicle is less than a first preset distance and greater than a second preset distance, and the deceleration of the vehicle in front is greater than the deceleration of the electric vehicle when coasting, then no coasting reminder is provided to the user.

[0015] To achieve the above objectives, a computer-readable storage medium is provided in a second aspect embodiment of the present invention, which stores a coasting reminder program for an electric vehicle, which, when executed by a processor, implements the aforementioned coasting reminder method for an electric vehicle.

[0016] According to embodiments of the present invention, a computer-readable storage medium can execute a coasting reminder program for an electric vehicle stored thereon, thereby reminding the user to coast at an appropriate time, enabling the vehicle to recover coasting energy and coast precisely to a coasting parking area, thus improving the energy utilization rate of the vehicle and ensuring coasting safety.

[0017] To achieve the above objectives, the electric vehicle coasting reminder device proposed in the third aspect embodiment of the present invention includes: an acquisition module for acquiring current driving information and historical driving information of the electric vehicle, wherein the current driving information includes driving information, following information, and road information; a prediction module for acquiring a coasting parking area and a predicted coasting distance based on the current driving information, and correcting the predicted coasting distance based on the historical driving information; and a reminder module for acquiring the distance between the electric vehicle and the coasting parking area, and providing a coasting reminder to the user based on the difference between the distance between the electric vehicle and the coasting parking area and the corrected predicted coasting distance.

[0018] According to an embodiment of the present invention, the coasting reminder device for electric vehicles obtains the coasting parking area and the predicted coasting distance based on the current driving information, and corrects the predicted coasting distance based on historical driving information, so as to remind the user to coast at the appropriate time, so that the vehicle can recover coasting energy and coast accurately to the coasting parking area, thereby improving the energy utilization rate of the vehicle and ensuring coasting safety.

[0019] To achieve the above objectives, the electric vehicle proposed in the fourth aspect of the present invention includes the coasting reminder device of the electric vehicle of the foregoing embodiments.

[0020] According to embodiments of the present invention, by employing the aforementioned coasting reminder device, the electric vehicle can remind the user to coast at an appropriate time, enabling the vehicle to recover coasting energy and coast precisely to the coasting parking area, thereby improving the energy utilization rate of the vehicle and ensuring coasting safety.

[0021] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0022] Figure 1 This is a flowchart illustrating a coasting warning method for an electric vehicle according to an embodiment of the present invention. Figure 2 This is a schematic diagram of a traffic light intersection according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the process for obtaining a coasting parking area according to an embodiment of the present invention; Figure 4 This is a schematic diagram of a process for correcting the predicted gliding distance according to an embodiment of the present invention; Figure 5 This is a schematic diagram illustrating the process of providing a gliding reminder to a user according to an embodiment of the present invention; Figure 6 This is a schematic diagram illustrating the process of providing a coasting reminder to a user while following another vehicle, according to an embodiment of the present invention. Figure 7 This is a block diagram of a coasting reminder device for an electric vehicle according to an embodiment of the present invention; Figure 8 This is a block diagram of an electric vehicle according to an embodiment of the present invention. Detailed Implementation

[0023] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0024] The following description, with reference to the accompanying drawings, describes an electric vehicle coasting reminder method, a computer-readable storage medium, an electric vehicle coasting reminder device, and an electric vehicle according to embodiments of the present invention.

[0025] Figure 1 This is a flowchart illustrating a coasting warning method for an electric vehicle according to an embodiment of the present invention.

[0026] Specifically, in some embodiments of the present invention, reference is made to Figure 1 As shown, the methods for alerting electric vehicles to coast include: S1, obtains the current driving information and historical driving information of the electric vehicle, where the current driving information includes driving information, following information and road information.

[0027] Specifically, in this embodiment of the invention, current driving information is obtained through ADAS (Advanced Driving Assistance System) and high-precision maps, and historical driving information is obtained from the cloud. Specifically, ADAS uses various sensing technologies (such as cameras, radar, and lidar) to perceive its own and the vehicle in front in real time to obtain driving information and following information, and accurately obtains road information through high-precision maps. In addition, the user's current driving information is uploaded to the cloud in real time.

[0028] S2 obtains the coasting parking area and predicted coasting distance based on the current driving information, and corrects the predicted coasting distance based on historical driving information.

[0029] It should be understood that, reference Figure 2 As shown, electric vehicles typically need to stop and wait at traffic light intersections while driving on roads. This type of driving situation (where the electric vehicle cannot smoothly pass through the intersection and needs to stop and wait) is suitable for recovering gliding energy. Therefore, in this embodiment of the invention, a gliding parking area is obtained by using following information and road information from the current driving information, so as to remind the user to glide at an appropriate time, enabling the vehicle to recover gliding energy and accurately glide to the gliding parking area. Specifically, in some embodiments of the invention, when it is determined that the electric vehicle is not in a following state based on the following information in the current driving information, the location of the stop line at the traffic light intersection can be obtained based on the road information, thereby obtaining the gliding parking area. Alternatively, when it is determined that the electric vehicle is in a following state based on the following information in the current driving information, the predicted stopping position of the preceding vehicle can be obtained based on the following information, thereby obtaining the gliding parking area.

[0030] More specifically, the speed, mass, and resistance of the electric vehicle can be obtained from the driving information in the current driving information, and then the predicted coasting distance can be calculated. At the same time, due to different driving styles of users, the predicted coasting distance will vary to different degrees. For example, if the user's driving style is aggressive, the predicted coasting distance can be appropriately extended, and conversely, if the user's driving style is gentle, the predicted coasting distance can be appropriately shortened. Therefore, in this embodiment of the present invention, the user's driving style is further analyzed based on historical driving information, and the predicted coasting distance is then corrected to obtain a more accurate predicted coasting distance.

[0031] S3 obtains the distance between the electric vehicle and the coasting parking area, and provides a coasting reminder to the user based on the difference between the distance between the electric vehicle and the coasting parking area and the corrected predicted coasting distance.

[0032] Specifically, in this embodiment of the invention, the difference between the distance between the electric vehicle and the coasting parking area and the corrected predicted coasting distance can be used to determine whether the electric vehicle can accurately coast to the coasting parking area. For example, when the difference between the distance between the electric vehicle and the coasting parking area and the corrected predicted coasting distance approaches 0, a coasting reminder is given to the user so that the electric vehicle can recover coasting energy and accurately coast to the coasting parking area, thereby improving the energy utilization rate of the vehicle and ensuring coasting safety.

[0033] Furthermore, in some embodiments of the present invention, reference is made to... Figure 3 As shown, the coasting parking area is obtained based on the current driving information, including: S21. If it is determined from the following information that the electric vehicle is not in a following state, then the coasting parking area is obtained from the road information.

[0034] Specifically, in this embodiment of the present invention, ADAS can sense whether there are other vehicles in front of the electric vehicle. If there are no other vehicles in front, it indicates that the electric vehicle is not following other vehicles. At this time, the position of the stop line at the traffic light intersection is obtained according to the road information, and the preset distance range after the position of the stop line at the traffic light intersection is used as the coasting parking area.

[0035] S22, if it is determined from the following information that the electric vehicle is in a following state, then the coasting parking area is obtained based on the road information and the following information.

[0036] Specifically, in this embodiment of the invention, if there are other vehicles in front of the electric vehicle, it indicates that the electric vehicle is in a following state. At this time, the predicted parking position of the vehicle in front is obtained according to the following information, and a preset distance range after the predicted parking position of the vehicle in front is used as the coasting parking area. Specifically, the speed, body length and distance between the vehicle in front and the stop line of the traffic light intersection are obtained from the following information, and the remaining time of the green light is obtained from the road information. Then, by combining the speed of each vehicle in front, the distance between the vehicle in front and the stop line of the traffic light intersection and the remaining time of the green light, it is determined whether the vehicle in front can pass through the traffic light intersection ahead. In order to determine the predicted parking position of the vehicle in front based on the position of the stop line of the traffic light intersection and the body length of the vehicle in front that cannot pass through the traffic light intersection ahead, the preset distance range after the predicted parking position of the vehicle in front is used as the coasting parking area.

[0037] Furthermore, in some embodiments of the present invention, the predicted gliding distance is obtained using the following formula:

[0038] in, To predict the glide distance, For the speed of the vehicle, For the quality of the vehicle, This refers to the sliding resistance experienced by the vehicle.

[0039] Specifically, in this embodiment of the invention, the predicted gliding distance of the electric vehicle can be calculated using its speed, mass, and resistance; that is, the theoretical gliding distance the electric vehicle can glide after losing power. It should be noted that... This is an intermediate variable representing the deceleration of the electric vehicle during coasting. This is the resultant force of all gliding resistances acting on the vehicle, including rolling resistance of the wheels, air resistance, climbing resistance, and the resistance force for the electric vehicle to recover gliding energy.

[0040] Furthermore, in some embodiments of the present invention, reference is made to... Figure 4 As shown, the predicted coasting distance is corrected based on historical driving information, including: S23 uses the K-means classification algorithm to analyze historical driving information and obtain the user's driving style.

[0041] Specifically, before performing the K-means classification algorithm, it is necessary to determine the appropriate number of classifications K based on the historical driving information of all users to obtain a more reasonable classification result. Specifically, in this embodiment of the invention, the value of K is determined using the elbow rule, for example, through the formula... Calculate WCSS (Within-Cluster Sum of Squares), where K is the number of categories. For the first The coordinates of data points corresponding to a user's historical driving information For the first A cluster of data points, For the first The centroid coordinates of a cluster of data points. For the first The coordinates of the data points corresponding to the historical driving information of the user and the first user The distance between the centroid coordinates of a cluster of data points is calculated, and the WCSS corresponding to different K values ​​is obtained by traversing the K values ​​in order to draw the relationship curve between the K values ​​and WCSS. Thus, the elbow-like inflection point in the relationship curve is determined as the K value.

[0042] More specifically, in the above embodiments of the present invention, after determining the K value, all user data points are divided into K data point clusters using the K-means classification algorithm, and the centroid coordinates of each data point cluster and the data point cluster to which each user belongs are continuously iterated. When the change value of the centroid coordinates of each data point cluster is less than a preset change value, the K-means classification algorithm is determined to have converged. At this time, the driving style classification corresponding to the data point cluster to which the user belongs is determined as the user's driving style.

[0043] S24, based on the user's driving style, obtains the coasting distance correction coefficient.

[0044] Specifically, in this embodiment of the present invention, the mapping relationship between the user's driving style and the coasting distance correction coefficient can be obtained in advance through prior experiments, and then the coasting distance correction coefficient corresponding to each user's driving style can be obtained based on the mapping relationship between the user's driving style and the coasting distance correction coefficient.

[0045] S25, correct the predicted gliding distance based on the gliding distance correction factor.

[0046] Specifically, in this embodiment of the invention, through the formula The predicted gliding distance is corrected, whereby... To predict the glide distance, This is the correction factor for gliding distance. This is the corrected predicted glide distance.

[0047] Furthermore, in some embodiments of the present invention, reference is made to... Figure 5 As shown, the distance between the electric vehicle and the coasting parking area is obtained, and based on the difference between the distance between the electric vehicle and the coasting parking area and the corrected predicted coasting distance, a coasting reminder is given to the user, including: S31. If it is determined from the following information that the electric vehicle is not in a following state, then when the difference between the distance between the electric vehicle and the coasting parking area and the corrected predicted coasting distance is less than a preset distance threshold, a coasting reminder will be given to the user.

[0048] Specifically, in this embodiment of the present invention, when the electric vehicle is not in a following state, if the difference between the distance between the electric vehicle and the coasting parking area and the corrected predicted coasting distance is less than a preset distance threshold, it is determined that the electric vehicle can accurately coast to the coasting parking area by recovering coasting energy from its current position. At this time, a coasting reminder is given to the user.

[0049] S32: If it is determined from the following information that the electric vehicle is in a following state, then the user is given a coasting reminder based on the driving information and the following information.

[0050] Specifically, in this embodiment of the invention, if the electric vehicle is in a following state, when reminding the user to coast, the driving state of the vehicle in front must also be considered so that the electric vehicle can maintain a safe distance from the vehicle in front.

[0051] Furthermore, in some embodiments of the present invention, reference is made to... Figure 6 As shown, based on driving information and following vehicle information, the system provides coasting reminders to the user, including: S321, obtains the following distance of the electric vehicle, the deceleration of the electric vehicle during coasting, and the deceleration of the vehicle in front.

[0052] Specifically, in this embodiment of the present invention, the deceleration of the electric vehicle during coasting is obtained through the driving information in the current driving information, and the following distance of the electric vehicle and the deceleration of the vehicle in front are obtained through the following information in the current driving information.

[0053] S322, if the following distance of the electric vehicle is greater than the first preset distance, or if the following distance of the electric vehicle is less than the first preset distance but greater than the second preset distance, and the deceleration of the vehicle in front is less than the deceleration of the electric vehicle when it is coasting, then a coasting reminder will be given to the user.

[0054] Specifically, in this embodiment of the invention, when the following distance of the electric vehicle is greater than a first preset distance, the electric vehicle is far from the vehicle in front. If the electric vehicle performs coasting energy recovery, it can always maintain a safe distance from the vehicle in front and will not collide with it. Therefore, a coasting reminder can be given to the user at this time. On the other hand, when the following distance of the electric vehicle is less than the first preset distance but greater than a second preset distance, and the deceleration of the vehicle in front is less than the deceleration of the electric vehicle when coasting, the distance between the electric vehicle and the vehicle in front is greater than a safe distance. If the electric vehicle performs coasting energy recovery, the distance between the electric vehicle and the vehicle in front will gradually increase, and it can always maintain a safe distance from the vehicle in front and will not collide with it. Therefore, a coasting reminder can also be given to the user at this time.

[0055] Furthermore, in some embodiments of the present invention, the method of providing a coasting reminder to the user based on driving information and following information further includes: if the following distance of the electric vehicle is less than a second preset distance, or if the following distance of the electric vehicle is less than a first preset distance and greater than a second preset distance, and the deceleration of the vehicle in front is greater than the deceleration of the electric vehicle when coasting, then no coasting reminder is provided to the user.

[0056] Specifically, when the following distance of the electric vehicle is less than the second preset distance, the electric vehicle is too close to the vehicle in front. If the electric vehicle performs coasting energy recovery, there is a risk of colliding with the vehicle in front. Therefore, no coasting warning is given to the user in this case. On the other hand, when the following distance of the electric vehicle is less than the first preset distance but greater than the second preset distance, and the deceleration of the vehicle in front is greater than the deceleration of the electric vehicle when coasting, if the electric vehicle performs coasting energy recovery, the distance between the electric vehicle and the vehicle in front will gradually decrease, making it impossible to guarantee that a safe distance is always maintained with the vehicle in front, and there is a risk of colliding with the vehicle in front. Therefore, no coasting warning is given to the user in this case either.

[0057] In summary, the coasting reminder method for electric vehicles according to embodiments of the present invention obtains the coasting parking area and the predicted coasting distance based on the current driving information, and corrects the predicted coasting distance based on historical driving information, so as to remind the user to coast at the appropriate time, so that the vehicle can recover coasting energy and coast accurately to the coasting parking area, thereby improving the energy utilization rate of the vehicle and ensuring coasting safety.

[0058] Based on the aforementioned coasting reminder method for electric vehicles according to the embodiments of the present invention, the present invention also proposes a computer-readable storage medium storing a coasting reminder program for electric vehicles thereon, which, when executed by a processor, implements the aforementioned coasting reminder method for electric vehicles according to the embodiments of the present invention.

[0059] It should be understood that specific embodiments of the computer-readable storage medium of the present invention can be found in the specific embodiments of the electric vehicle coasting reminder method described in the foregoing embodiments of the present invention, and will not be repeated here to reduce redundancy.

[0060] In summary, according to the computer-readable storage medium of the present invention, the coasting reminder program for electric vehicles stored thereon can remind the user to coast at an appropriate time, enabling the vehicle to recover coasting energy and coast accurately to the coasting parking area, thereby improving the energy utilization rate of the vehicle and ensuring coasting safety.

[0061] Figure 7 This is a block diagram of a coasting reminder device for an electric vehicle according to an embodiment of the present invention.

[0062] Specifically, in some embodiments of the present invention, reference is made to Figure 7 As shown, the coasting warning device 100 for electric vehicles includes: an acquisition module 10, a prediction module 20, and a warning module 30.

[0063] The system includes: an acquisition module 10 for acquiring current and historical driving information of the electric vehicle, including driving information, following information, and road information; a prediction module 20 for acquiring a coasting parking area and a predicted coasting distance based on the current driving information, and correcting the predicted coasting distance based on historical driving information; and a reminder module 30 for acquiring the distance between the electric vehicle and the coasting parking area, and providing a coasting reminder to the user based on the difference between the distance between the electric vehicle and the coasting parking area and the corrected predicted coasting distance.

[0064] Furthermore, the prediction module 20 is specifically used to: if it is determined from the following information that the electric vehicle is not in a following state, then obtain the coasting parking area based on the road information; if it is determined from the following information that the electric vehicle is in a following state, then obtain the coasting parking area based on the road information and the following information.

[0065] Furthermore, the prediction module 20 is specifically used to obtain the predicted gliding distance using the following formula:

[0066] in, To predict the glide distance, For the speed of the vehicle, For the quality of the vehicle, This refers to the sliding resistance experienced by the vehicle.

[0067] Furthermore, the prediction module 20 is specifically used to analyze historical driving information using the K-means classification algorithm to obtain the user's driving style; obtain the coasting distance correction coefficient based on the user's driving style; and correct the predicted coasting distance based on the coasting distance correction coefficient.

[0068] Furthermore, the reminder module 30 is specifically used to: if it is determined from the following information that the electric vehicle is not in a following state, then when the difference between the distance between the electric vehicle and the coasting parking area and the corrected predicted coasting distance is less than a preset distance threshold, then to remind the user to coast; if it is determined from the following information that the electric vehicle is in a following state, then to remind the user to coast based on the driving information and the following information.

[0069] Furthermore, the reminder module 30 is specifically used to obtain the following distance of the electric vehicle, the deceleration of the electric vehicle during coasting, and the deceleration of the vehicle in front; if the following distance of the electric vehicle is greater than a first preset distance, or if the following distance of the electric vehicle is less than the first preset distance but greater than a second preset distance, and the deceleration of the vehicle in front is less than the deceleration of the electric vehicle during coasting, then a coasting reminder is given to the user.

[0070] Furthermore, the reminder module 30 is specifically used to: if the following distance of the electric vehicle is less than the second preset distance, or if the following distance of the electric vehicle is less than the first preset distance and greater than the second preset distance, and the deceleration of the vehicle in front is greater than the deceleration of the electric vehicle when it is coasting, then no coasting reminder will be given to the user.

[0071] It should be understood that the specific implementation of the electric vehicle coasting reminder device of the present invention can be found in the specific implementation of the electric vehicle coasting reminder method of the foregoing embodiments of the present invention, and will not be repeated here to reduce redundancy.

[0072] In summary, the coasting reminder device for electric vehicles according to embodiments of the present invention obtains the coasting parking area and the predicted coasting distance based on the current driving information, and corrects the predicted coasting distance based on historical driving information, so as to remind the user to coast at the appropriate time, so that the vehicle can recover coasting energy and coast accurately to the coasting parking area, thereby improving the energy utilization rate of the vehicle and ensuring coasting safety.

[0073] Figure 7 This is a block diagram of an electric vehicle according to an embodiment of the present invention.

[0074] Specifically, in some embodiments of the present invention, reference is made to Figure 8 As shown, the electric vehicle 1000 includes the coasting reminder device 100 of the electric vehicle according to the above embodiment of the present invention.

[0075] It should be understood that the specific implementation of the electric vehicle 1000 of the present invention can be found in the specific implementation of the coasting reminder device of the electric vehicle in the foregoing embodiments of the present invention, and will not be repeated here to reduce redundancy.

[0076] In summary, the electric vehicle according to the embodiments of the present invention, by adopting the aforementioned coasting reminder device, can remind the user to coast at the appropriate time, enabling the vehicle to recover coasting energy and coast precisely to the coasting parking area, thereby improving the energy utilization rate of the vehicle and ensuring coasting safety.

[0077] 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, or in conjunction with, an instruction execution system, apparatus, or device (such as a computer-based system, a processor-included system, or other system that can fetch and execute instructions from, an instruction execution system, apparatus, or device). For the purposes of this specification, "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transmit programs for use by, or in conjunction with, an instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of computer-readable media include: an electrical connection having one or more wires (electronic device), a portable computer disk drive (magnetic device), random access memory (RAM), read-only memory (ROM), erasable and editable read-only memory (EPROM or flash memory), fiber optic devices, and portable optical disc read-only memory (CDROM). Alternatively, the computer-readable medium may be paper or other suitable media on which the program can be printed, since the program can be obtained electronically, for example, by optically scanning the paper or other medium, followed by editing, interpreting, or otherwise processing as necessary, and then stored in a computer memory.

[0078] It should be understood that various parts of the present invention can be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, multiple steps or methods can be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, it can be implemented using any one or a combination of the following techniques known in the art: discrete logic circuits having logic gates for implementing logical functions on data signals, application-specific integrated circuits (ASICs) having suitable combinational logic gates, programmable gate arrays (PGAs), field-programmable gate arrays (FPGAs), etc.

[0079] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0080] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0081] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0082] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0083] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0084] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A coasting alert method of an electric vehicle, characterized by, The method includes: Obtain current driving information and historical driving information of electric vehicles, wherein the current driving information includes driving information, following information and road information; The coasting parking area and predicted coasting distance are obtained based on the current driving information, and the predicted coasting distance is corrected based on the historical driving information. The distance between the electric vehicle and the coasting parking area is obtained, and a coasting reminder is given to the user based on the difference between the distance between the electric vehicle and the coasting parking area and the corrected predicted coasting distance.

2. The method for reminding electric vehicles to coast according to claim 1, characterized in that, The step of obtaining the coasting parking area based on the current driving information includes: If it is determined from the following information that the electric vehicle is not in a following state, then the coasting parking area is obtained from the road information; If it is determined that the electric vehicle is in the following state based on the following information, then the coasting parking area is obtained based on the road information and the following information.

3. The method for reminding electric vehicles to coast according to claim 1, characterized in that, The predicted gliding distance is obtained using the following formula: ， in, To predict the glide distance, For the speed of the vehicle, For the quality of the vehicle, This refers to the sliding resistance experienced by the vehicle.

4. The method for reminding electric vehicles to coast according to claim 1, characterized in that, The step of correcting the predicted gliding distance based on the historical driving information includes: The historical driving information is analyzed using the K-means classification algorithm to obtain the user's driving style; Based on the user's driving style, obtain the coasting distance correction coefficient; The predicted gliding distance is corrected based on the gliding distance correction factor.

5. The method for reminding electric vehicles to coast according to claim 1, characterized in that, The step of obtaining the distance between the electric vehicle and the coasting parking area, and providing a coasting reminder to the user based on the difference between the distance between the electric vehicle and the coasting parking area and the corrected predicted coasting distance, includes: If it is determined from the following information that the electric vehicle is not in a following state, then when the difference between the distance between the electric vehicle and the coasting parking area and the corrected predicted coasting distance is less than a preset distance threshold, a coasting reminder will be given to the user. If it is determined that the electric vehicle is in a following state based on the following information, then a coasting reminder is given to the user based on the driving information and the following information.

6. The method for reminding an electric vehicle to coast according to claim 5, characterized in that, The step of providing a coasting reminder to the user based on the driving information and the following vehicle information includes: It obtains the following distance of the electric vehicle, the deceleration of the electric vehicle during coasting, and the deceleration of the vehicle in front; If the following distance of the electric vehicle is greater than a first preset distance, or if the following distance of the electric vehicle is less than the first preset distance but greater than a second preset distance, and the deceleration of the vehicle in front is less than the deceleration of the electric vehicle while coasting, then a coasting reminder will be given to the user.

7. The method for reminding electric vehicles to coast according to claim 6, characterized in that, The step of providing a coasting reminder to the user based on the driving information and the following information also includes: If the following distance of the electric vehicle is less than the second preset distance, or if the following distance of the electric vehicle is less than the first preset distance and greater than the second preset distance, and the deceleration of the vehicle in front is greater than the deceleration of the electric vehicle while coasting, then no coasting reminder will be given to the user.

8. A computer-readable storage medium, characterized in that, It stores a coasting reminder program for electric vehicles, which, when executed by a processor, implements the coasting reminder method for electric vehicles as described in any one of claims 1-7.

9. A coasting warning device for an electric vehicle, characterized in that, The device includes: The acquisition module is used to acquire the current driving information and historical driving information of the electric vehicle, wherein the current driving information includes driving information, following information and road information; The prediction module is used to obtain the coasting parking area and the predicted coasting distance based on the current driving information, and to correct the predicted coasting distance based on the historical driving information; The reminder module is used to obtain the distance between the electric vehicle and the coasting parking area, and to provide a coasting reminder to the user based on the difference between the distance between the electric vehicle and the coasting parking area and the corrected predicted coasting distance.

10. An electric vehicle, characterized in that, The vehicle includes a coasting warning device for an electric vehicle as described in claim 9.

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