Coasting energy recovery method, system and vehicle

Abstract

The application provides a coasting energy recovery method, wherein the method comprises the following steps: obtaining a coasting window, the coasting window being a continuous interval from a starting point to an ending point of vehicle running and meeting a preset window obtaining condition; determining an effective coasting window; reading a running parameter of the effective coasting window, calculating a default coasting energy recovery level according to the running parameter, and judging whether a vehicle user actively sets the coasting energy recovery level; if it is judged that the vehicle user does not actively set the coasting energy recovery level, the default coasting energy recovery level is output; if it is judged that the vehicle user actively sets the coasting energy recovery level and the running parameter under the default coasting energy recovery level deviates from the running parameter by more than a deviation threshold, the default coasting energy recovery level is output. The application can match the energy recovery level according to the user demand, and improve the user experience.

Description

Technical Field

[0001] The present invention relates to the automotive field, and in particular to a coasting energy recovery method, system and vehicle. Background Art

[0002] With the increasing popularity of electric vehicles, all types of electric vehicles now have a coasting energy recovery level function. Users can actively select a coasting energy recovery level through a key switch or soft switch to meet their own driving needs and experience.

[0003] However, for users, the existing technology has the following problems. The default factory setting does not change, that is, the coasting energy recovery level is not memorized when the power is turned off, which requires the user to set the coasting energy recovery level every time they drive; the factory setting is that the user defaults to a certain coasting energy recovery level, and the coasting energy recovery level is memorized when the power is turned off. The user can manually set the default coasting energy recovery level, but the user needs to actively set the coasting energy recovery level according to their own needs; the coasting energy recovery level set by the last user is used, and there is still the possibility of incorrect setting. For example, before the user last powered off, the user tried to set the coasting energy recovery level to high, or mistakenly switched to a high coasting energy recovery level. This method may set a level that the user does not like as a memory value. In the above cases, the vehicle cannot accurately and intelligently identify the user's needs for the coasting energy recovery level. Summary of the Invention

[0004] In response to the deficiencies in the prior art, the present invention aims to provide a coasting energy recovery method, system, and vehicle to overcome the operational inconvenience and incorrect setting problems in the actual setting of the coasting energy recovery level. The vehicle can output a coasting energy recovery level suitable for the user based on the user's driving preferences.

[0005] In order to achieve the above-mentioned object of the invention, the present invention provides the following technical solutions:

[0006] According to a first aspect of the present invention, there is provided a coasting energy recovery method, comprising:

[0007] Obtaining a sliding window, where the sliding window is a continuous interval from a vehicle operation start point to an end point and satisfies a preset window acquisition condition;

[0008] When the sliding window meets the window validity condition, it is determined to be a valid sliding window;

[0009] Reading driving parameters of the effective coasting window, calculating a default coasting energy recovery level based on the driving parameters, and determining whether a vehicle user has actively set the coasting energy recovery level:

[0010] If it is determined that the vehicle user has not actively set the coasting energy recovery level and the first output condition is met, outputting and executing the default coasting energy recovery level;

[0011] If it is determined that the vehicle user actively sets the coasting energy recovery level, and the driving parameters under the default coasting energy recovery level deviate from the driving parameters by more than a deviation threshold, and the second output condition is met, the default coasting energy recovery level is output and executed.

[0012] Preferably, the preset window acquisition condition is that the cumulative power generation provided by the motor feedback provided by the coasting energy recovery in the coasting window is greater than or equal to a first preset power threshold.

[0013] Preferably, the window validity condition is that the average power of the sliding window reaches a first power threshold.

[0014] Preferably, the first output condition is: the mileage value of the effective sliding window is greater than or equal to a first mileage threshold, or the driving time of the effective sliding window is greater than or equal to a first time threshold;

[0015] The second output condition is: the mileage value of the valid sliding window is greater than or equal to a second mileage threshold, or the driving time of the valid sliding window is greater than or equal to a second time threshold.

[0016] According to a second aspect of the present invention, there is provided a coasting energy recovery system, comprising a coasting window determination module, an effective coasting window determination module, a coasting energy recovery level reading module, and a default coasting energy recovery level determination module;

[0017] The sliding window determination module is used to obtain the sliding window;

[0018] The effective sliding window determination determines the effective sliding window;

[0019] The coasting energy recovery level reading module is used to determine whether the user actively sets the coasting energy recovery level;

[0020] The default coasting energy recovery level determination module is used to count the driving parameters of the effective coasting window, determine and calculate the default coasting energy recovery level, and determine and output the default coasting energy recovery level.

[0021] According to a third aspect of the present invention, there is provided a vehicle, characterized by comprising an input device, a memory, and a processor;

[0022] The input device is used to detect whether the user actively sets the coasting energy recovery level;

[0023] The memory stores a computer program, which can implement the above-mentioned coasting energy recovery method when executed;

[0024] The processor is configured to execute the computer program.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] The present invention can automatically set the coasting energy recovery level to a level suitable for the user by tracking the user's driving process, without the user actively participating in the setting. This can reduce user operations, improve the user's intelligent experience, and avoid memorizing coasting energy recovery levels that the user does not like. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Other features, objects and advantages of the present invention will become more apparent upon reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0028] Figure 1 This is a flow chart of the coasting energy recovery method described in Example 1 of the present invention;

[0029] Figure 2 Schematic diagram of the structure of the coasting energy recovery system according to embodiment 2 of the present invention;

[0030] Figure 3 This is a schematic structural diagram of the vehicle described in Example 3 of the present invention.

[0031] The figure shows:

[0032] 11-sliding window determination module;

[0033] 12-Effective sliding window determination module;

[0034] 13- Coasting energy recovery level reading module;

[0035] 14-Default glide energy recovery level confirmation module;

[0036] 21- input device;

[0037] 22-processor;

[0038] 23-Memory. DETAILED DESCRIPTION

[0039] To make the objectives, technical solutions, and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Generally, the components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.

[0040] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for protection, but merely represents selected embodiments of the present application. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments in the present application without creative work are within the scope of protection of the present application.

[0041] It should be noted that similar numbers and letters represent similar items in the following figures. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in the subsequent figures. In addition, all directional indications in this application (such as up, down, left, right, front, back, bottom...) are only used to explain the relative position relationship, movement, etc. between the components under a certain specific posture (as shown in the figures). If the specific posture changes, the directional indication will also change accordingly. Furthermore, the descriptions of "first", "second", etc. in the application are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Technologies, methods and equipment known to ordinary technicians in the relevant fields may not be discussed in detail, but where appropriate, the technologies, methods and equipment should be considered as part of the specification.

[0042] Example 1

[0043] This embodiment provides a coasting energy recovery method, comprising the following steps:

[0044] Obtain at least one coasting window for the vehicle. A coasting window is a continuous interval between the vehicle's start and end points. Acquisition of a coasting window requires satisfying a preset window acquisition condition, which can be: when the cumulative motor power generation provided by coasting energy recovery in the interval reaches a first preset power threshold, the interval is determined to be a coasting window. Determining a coasting window is a specific, referenceable driving process. For example, special vehicle operating conditions such as moving the vehicle in a parking lot or using the air conditioner do not constitute a coasting window.

[0045] Driving information within each sliding window is obtained. If the driving information meets a preset window validity condition, the sliding window is determined to be a valid sliding window. The construction of valid sliding windows enables centralized scene identification and the acquisition of driving information within the sliding window. Specifically, the preset window validity condition can be: calculating the average power within the sliding window. If the average power of the window reaches a first power threshold, the sliding window is determined to be a valid sliding window.

[0046] Read the driving parameters of the effective coasting window. Specifically, the driving parameters can be the vehicle speed or the vehicle deceleration, and the selection of the driving parameters can be set as needed. For the vehicle driven by the user, when the user has not set the coasting energy recovery level, the coasting energy recovery level is in the factory pending state, and the vehicle controller on the whole vehicle can preset the characteristics of the relevant system so that the whole vehicle has matching coasting braking and economy status to meet the needs of the user during the initial trial period of the vehicle. For the vehicle driven by the user, when the user actively sets the coasting energy recovery level, the coasting energy recovery level is set as the preset value according to the level set by the user, and the vehicle control on the whole vehicle matches the coasting braking performance and economy status of the relevant system according to the preset coasting energy recovery level to match the user's needs for the coasting energy recovery level.

[0047] The vehicle's default coasting energy recovery level is calculated based on the acquired driving parameters. The default coasting energy recovery level is calculated based on the driving parameters acquired during the effective coasting window after the vehicle is powered off, and is consistent with the vehicle user's needs. Depending on whether the user actively sets the coasting energy recovery level, the following are handled separately:

[0048] If the user has not actively set the coasting energy recovery level, a determination is made as to whether a first output condition is met. If so, the default coasting energy recovery level is used as the vehicle's coasting energy recovery level, output, and executed. The first output condition may be: if the calculated mileage value within the valid coasting window reaches a first mileage threshold, or if the calculated driving time within the valid coasting window reaches a first time threshold, the default coasting energy recovery level is used as the vehicle's coasting energy recovery level and is displayed to the user the next time the vehicle powers on. Driving parameters within the user's valid coasting window may also be counted to determine whether the current driving parameters meet the preset default coasting energy recovery level requirements. If this is determined to be true, the first output condition is then determined.

[0049] If the user proactively sets the coasting energy recovery level, the system must determine whether the driving parameters at the default coasting energy recovery level deviate from the specified driving parameters by more than a deviation threshold and simultaneously meet a second output condition. Determining whether the driving parameters at the default coasting energy recovery level deviate from the specified driving parameters by more than the deviation threshold primarily verifies whether the current coasting energy recovery level meets the user's requirements and detects excessive deviation between the actual driving parameters and the set coasting energy recovery level. Preferably, this deviation threshold can be 50%. The second output condition can be: if the calculated mileage value of the valid coasting window reaches a second mileage threshold, or if the calculated driving time of the valid coasting window reaches a second time threshold, the default level will be used as the vehicle's coasting energy recovery level, and the user will be prompted the next time the vehicle is powered on.

[0050] The coasting energy recovery level can be set to meet the individual needs of vehicle users. For example, a high energy recovery level can improve the vehicle's coasting energy recovery rate, but this will correspondingly increase the vehicle's deceleration, which may reduce the driving experience. For example, a low energy recovery level can make the vehicle coast relatively smooth, but the energy recovery utilization rate is low, which is not conducive to the vehicle's economic efficiency.

[0051] The following describes a specific example of the vehicle coasting energy recovery method provided by this embodiment, and its flow chart is as follows: Figure 1 shown.

[0052] In step S100 , the sliding window statistics are calculated, starting from the start of the vehicle operation and continuing until the end point.

[0053] In step S101, after a sliding window calculation is completed, if the cumulative motor feedback power generation provided by the sliding energy recovery in the interval is greater than or equal to a first preset power threshold, it is determined that the sliding window requirement is met and step S102 is executed; otherwise, the sliding window calculation continues.

[0054] In step S102 , the effective sliding window is statistically calculated by calculating the effective sliding window through the vehicle's driving parameters.

[0055] In step S103, the calculated valid sliding window is judged. If the average power of the window is greater than or equal to the first power threshold, the sliding window is determined to be a valid sliding window and step S104 is executed; otherwise, the sliding window is determined to be an invalid window and the sliding window is recalculated.

[0056] In step S104, the default coasting energy recovery level is calculated and a determination is made as to whether the vehicle user has actively set it. First, the vehicle's default coasting energy recovery level is determined based on the vehicle's driving parameters. The default coasting energy recovery level is a statistical calculation of the driving parameters obtained during the effective coasting window after the vehicle is powered off, resulting in a coasting energy recovery level that meets the vehicle user's needs. Depending on whether the user has actively set the coasting energy recovery level, the process is handled differently: if not, the coasting energy recovery level is reported as pending, the factory default value is used as the default coasting energy recovery level, and step S105 is executed. If it is set, the coasting energy recovery level is reported as the user-set level, and the coasting energy recovery level verification continues, executing step S107.

[0057] In step S105, the driving parameters in the user's effective coasting window are counted to determine whether the current driving parameters meet the requirements of the preset default coasting energy recovery level.

[0058] In step S106, a judgment is made. When the calculated mileage value of the effective gliding window is greater than or equal to the first mileage threshold, or the calculated driving time of the effective gliding window is greater than or equal to the first time threshold, the default level is output as the gliding energy recovery level, and step S109 is executed; otherwise, the calculation of the driving parameters in the effective gliding window continues.

[0059] In step S107, the deviation between the actual driving parameters and the set coasting energy recovery level is calculated. That is, the deviation between the calculated driving parameters at the default coasting energy recovery level and the set energy recovery level is greater than a deviation threshold. If so, the deviation is determined to be excessive, and step S108 is executed. Preferably, the deviation threshold can be 50%.

[0060] In step S108, a judgment is made. If the calculated mileage value of the effective gliding window is greater than or equal to the second mileage threshold, or the calculated driving time of the effective gliding window is greater than or equal to the second time threshold, the default level is used as the gliding energy recovery level and step S109 is executed. Otherwise, the calculation of the driving parameters in the effective gliding window continues.

[0061] In step S109 , based on the calculated coasting energy recovery level, the level is output as the coasting energy recovery level of the entire vehicle, and the entire vehicle performs a coasting braking capability that matches the level.

[0062] Example 2

[0063] This embodiment provides a coasting energy recovery system, which is applied to a vehicle controller. The system structure is as follows: Figure 2As shown, the system includes a coasting window determination module 11, an effective coasting window determination module 12, a coasting energy recovery level reading module 13, and a default coasting energy recovery level confirmation module 14. The coasting window determination module 11 is used to obtain and determine the vehicle's coasting window. The effective coasting window determination module 12 is used to count and determine the vehicle's effective coasting window and determine that the vehicle's coasting window is the effective coasting window. The coasting energy recovery level reading module 13 is used to determine whether the user has actively set the coasting energy recovery level. The default coasting energy recovery level determination module 14 is used to count driving parameters within the effective coasting window, determine and calculate the default coasting energy recovery level, and output the default coasting energy recovery level if the preset conditions for the coasting energy recovery level are met.

[0064] Example 3

[0065] This embodiment provides an electric vehicle such as Figure 3 As shown, it specifically includes: an input device 21, a processor 22, and a memory 23. The input device 21 is used to detect the coasting energy recovery level operated by the user.

[0066] The processor 22 is configured to execute a computer program to implement the coasting energy recovery level control described above. Specifically, the processor 22 may be an electronic control unit, a controller, a microcontroller, or other data processing chip. The processor 22 may execute program code stored in a memory and process data.

[0067] Memory 23 stores a computer program executable by processor 22. Specifically, memory 23 is a readable storage medium storing a computer program that, when executed by the processor, implements the aforementioned method for setting the default coasting energy recovery level. Memory 23 can be of one or more types. Memory 23 can be a memory, hard drive, card-type memory, magnetic disk, or the like. Memory can be an external storage device of the vehicle, such as a plug-in hard drive or smart memory card, or it can be an internal storage unit of the vehicle. Memory 23 can be used not only to store installed vehicle application software and various data, but also to temporarily store data that has been output or is about to be output.

[0068] The above describes the specific embodiments of the present invention. Based on the above description, relevant personnel can make various changes and modifications without departing from the scope of the technical concept of this invention.

Claims

1. A coasting energy recovery method, characterized in that: include: Obtaining a sliding window, where the sliding window is a continuous interval from a vehicle operation start point to an end point and satisfies a preset window acquisition condition; When the sliding window meets the window validity condition, it is determined to be a valid sliding window; Reading driving parameters of the effective coasting window, calculating a default coasting energy recovery level based on the driving parameters, and determining whether a vehicle user has actively set the coasting energy recovery level: If it is determined that the vehicle user has not actively set the coasting energy recovery level and the first output condition is met, outputting and executing the default coasting energy recovery level; If it is determined that the vehicle user actively sets the coasting energy recovery level, and the driving parameters under the default coasting energy recovery level deviate from the driving parameters by more than a deviation threshold, and the second output condition is met, the default coasting energy recovery level is output and executed.

2. The coasting energy recovery method according to claim 1, characterized in that: The preset window acquisition condition is that the cumulative power generation provided by the motor feedback provided by the coasting energy recovery in the coasting window is greater than or equal to a first preset power threshold.

3. The coasting energy recovery method according to claim 1, characterized in that: The window validity condition is that the average power of the sliding window reaches a first power threshold.

4. The coasting energy recovery method according to claim 1, characterized in that: The first output condition is: the mileage value of the valid sliding window is greater than or equal to a first mileage threshold, or the driving time of the valid sliding window is greater than or equal to a first time threshold; The second output condition is: the mileage value of the valid sliding window is greater than or equal to a second mileage threshold, or the driving time of the valid sliding window is greater than or equal to a second time threshold.

5. A coasting energy recovery system, characterized in that: It includes a glide window determination module, an effective glide window determination module, a glide energy recovery level reading module, and a default glide energy recovery level determination module; The sliding window determination module is used to obtain the sliding window; The effective sliding window determination determines the effective sliding window; The coasting energy recovery level reading module is used to determine whether the user actively sets the coasting energy recovery level; The default coasting energy recovery level determination module is used to count the driving parameters of the effective coasting window, determine and calculate the default coasting energy recovery level, and determine and output the default coasting energy recovery level.

6. A vehicle, characterized in that: including an input device, a memory, and a processor; The input device is used to detect whether the user actively sets the coasting energy recovery level; The memory stores a computer program, which, when executed, can implement the coasting energy recovery method according to any one of claims 1 to 4; The processor is configured to execute the computer program.

Images