New energy vehicle energy recovery control method and device, electronic equipment and medium

Abstract

This application relates to the field of vehicle energy control, specifically to a method, device, electronic device, and medium for energy recovery control of new energy vehicles. The energy recovery control method for new energy vehicles includes: acquiring the recoverable power of the battery, the power consumed by high-voltage accessories, and the recoverable power of the entire vehicle; when the recoverable power of the entire vehicle is greater than the sum of the recoverable power of the battery and the power consumed by high-voltage accessories, controlling the generator to heat up based on the maximum recoverable power of the drive motor during coasting and the maximum heatable power of the generator; or, controlling the generator to heat up based on the accelerator pedal depth, the maximum recoverable power of the drive motor during coasting, and the maximum heatable power of the generator. This application allows the power that cannot be recovered by the battery during coasting to be consumed by the generator's heat, ensuring a smooth deceleration during coasting energy recovery, while also preventing battery overcharging and brake pad damage, without requiring new components and incurring additional costs.

Description

Technical Field

[0001] This application relates to the field of vehicle energy control, and more specifically, to a method, device, electronic equipment, and medium for energy recovery control of new energy vehicles. Background Technology

[0002] To increase range, new energy vehicles typically apply negative torque to the motor during coasting and braking, converting the vehicle's mechanical energy into electrical energy and recovering it into the battery, thus increasing the driving range. This also increases the vehicle's deceleration, making the deceleration feel more pronounced than when coasting. Over time, users adapt to this deceleration and can estimate the following distance and coasting distance at this rate. However, when the battery has a high charge level, it lacks the power to recharge. If coasting energy recovery is still in operation at this time, it could lead to overcharging of the battery. Conversely, without coasting energy recovery, the deceleration feels weaker than usual, causing users to misjudge the following distance and coasting distance, potentially leading to dangerous situations.

[0003] One current solution is to distribute coasting energy recovery through the chassis. If the power system cannot output the torque for coasting energy recovery, the chassis hydraulic pressure is used to provide negative torque deceleration to the user through braking. However, this solution will damage the brake pads if used for a long time or when encountering long downhill sections.

[0004] In view of the above, this application is hereby submitted. Summary of the Invention

[0005] The purpose of this application is to provide a method, device, electronic device and medium for energy recovery control of new energy vehicles, so as to solve the problems in the prior art that the braking or coasting energy cannot be effectively recovered when the power battery charge is high, or that the braking method increases the deceleration and damages the brake pads.

[0006] To achieve the above objectives, this application adopts the following technical solution: Firstly, this application provides a method for controlling energy recovery in new energy vehicles, including: Obtain the recyclable power of the battery, the power consumed by high-voltage accessories, and the recyclable power of the entire vehicle; When the total vehicle regenerative power is greater than the sum of the battery regenerative power and the power consumed by the high-voltage accessories, the generator heating is controlled based on the maximum regenerative power of the drive motor during coasting and the maximum heat-generating power of the generator; or, the generator heating is controlled based on the accelerator pedal depth, the maximum regenerative power of the drive motor during coasting, and the maximum heat-generating power of the generator.

[0007] In some technical solutions, the recyclable power of the vehicle is determined in the following way: Obtain the mapping relationship between the vehicle's recyclable power and vehicle speed, and determine the vehicle's recyclable power based on the mapping relationship and vehicle speed.

[0008] In some technical solutions, controlling generator heating based on the maximum power of energy recovery during coasting of the drive motor and the maximum heatable power of the generator includes: The gradient of the change in the energy recovery power of the drive motor during coasting is determined based on the maximum energy recovery power of the drive motor during coasting. Determine the gradient of the generator's heat output based on the generator's maximum heat output; The generator is controlled to operate when the gradient of the generator's heating power change is greater than the gradient of the drive motor's coasting energy recovery power change, thereby causing the generator to heat up.

[0009] In some technical solutions, controlling generator heating based on accelerator pedal depth, maximum power of drive motor coasting energy recovery, and maximum heatable power of generator includes: The gradient of the change in the energy recovery power of the drive motor during coasting is determined based on the maximum energy recovery power of the drive motor during coasting. Determine the gradient of the generator's heat output based on the generator's maximum heat output; When the accelerator pedal depth is less than a preset depth, the generator is controlled to operate when the gradient of the generator's heating power change is greater than or equal to the gradient of the drive motor's coasting energy recovery power change, thereby causing the generator to heat up.

[0010] In some technical solutions, the process of controlling generator heating also includes: Coolant or generator lubricating oil is used to dissipate heat from the generator.

[0011] In some technical solutions, the maximum heatable power of the generator is determined by the following method: The generator's maximum heat-generating power is determined by controlling the coolant or generator lubricating oil to dissipate heat from the generator at the maximum allowable operating power of the pump used, and determining the generator's maximum heat-generating power when the continuous heating time is set and the generator stator winding does not overheat.

[0012] In some technical solutions, the maximum power of the drive motor for coasting energy recovery is determined in the following way: Based on the vehicle's recoverable power and speed, determine the theoretical maximum torque for recovering coasting energy from the drive motor; The maximum torque for recuperating energy during coasting is determined based on the theoretical maximum torque of the drive motor and the set torque for recuperating energy during coasting.

[0013] Secondly, this application provides an energy recovery control device for new energy vehicles, comprising: The acquisition module is used to acquire the battery's recyclable power, the high-voltage accessory's power consumption, and the vehicle's overall recyclable power. The generator heating control module is used to control the generator heating based on the maximum recoverable power of the drive motor during coasting and the maximum heatable power of the generator when the recoverable power of the whole vehicle is greater than the sum of the recoverable power of the battery and the power consumed by the high-voltage accessory; or, based on the accelerator pedal depth, the maximum recoverable power of the drive motor during coasting and the maximum heatable power of the generator.

[0014] Thirdly, this application provides an electronic device, comprising: At least one processor, and a memory communicatively connected to at least one of the processors; The memory stores instructions that can be executed by at least one of the processors, which are executed by at least one of the processors to enable at least one of the processors to perform the method described above.

[0015] Fourthly, this application provides a computer-readable storage medium storing computer instructions for causing a computer to perform the above-described method.

[0016] Compared with the prior art, the beneficial effects of this application are as follows: The new energy vehicle energy recovery control method provided in this application first obtains the recoverable power of the battery, the power consumed by high-voltage accessories, and the recoverable power of the entire vehicle. When the recoverable power of the entire vehicle is greater than the sum of the recoverable power of the battery and the power consumed by the high-voltage accessories, the method controls the generator heating based on the maximum recoverable power of the drive motor during coasting and the maximum heat-generating power of the generator; or, based on the accelerator pedal depth, the maximum recoverable power of the drive motor during coasting, and the maximum heat-generating power of the generator. This method, when the recoverable power of the entire vehicle is greater than the sum of the recoverable power of the battery and the power consumed by the high-voltage accessories, controls the generator heating based on the maximum recoverable power of the drive motor during coasting and the maximum heat-generating power of the generator, or further based on the accelerator pedal depth. This ensures that power that cannot be recovered by the battery is consumed by the generator heating (such as the heating of the generator stator windings), guaranteeing a deceleration feel during coasting energy recovery. It also prevents battery overcharging and brake pad damage, and requires no new components, thus avoiding additional costs. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 This is a flowchart illustrating the energy recovery control method for new energy vehicles provided in this application; Figure 2 This is a comparison graph of the generator heating power and coasting energy recovery power variation curves in the new energy vehicle energy recovery control method provided in this application; Figure 3 This is a comparison graph of the generator heating power and coasting energy recovery power variation curves in another new energy vehicle energy recovery control method provided in this application; Figure 4 This is a schematic diagram of the structure of the new energy vehicle energy recovery control device provided in this application; Figure 5 This is a schematic diagram of the structure of the electronic device provided in this application. Detailed Implementation

[0019] The following description, in conjunction with the accompanying drawings, illustrates exemplary embodiments of this application, including various details to aid understanding. These should be considered merely exemplary. Therefore, those skilled in the art will recognize that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of this application. Similarly, for clarity and brevity, descriptions of well-known functions and structures are omitted in the following description.

[0020] As mentioned in the background section, existing technologies suffer from the problem of ineffective recovery of braking or coasting energy when the power battery has a high charge level, or the increased deceleration and damage to brake pads when braking is used. To address this, this application, when the vehicle's total regenerative power exceeds the sum of the battery's regenerative power and the power consumed by high-voltage accessories, utilizes the maximum regenerative power of the drive motor during coasting, the maximum heat output of the generator, and further controls generator heating based on accelerator pedal depth. This achieves the dissipation of excess energy, thereby preventing battery overcharging or brake pad damage, stabilizing vehicle deceleration, and improving the user experience. The following detailed description, in conjunction with embodiments, further illustrates this application.

[0021] Example 1 Figure 1This is a flowchart of a new energy vehicle energy recovery control method provided in this embodiment. This embodiment is applicable to energy recovery control during vehicle operation. The method can be executed by a new energy vehicle energy recovery control device, which can be composed of software and / or hardware and is generally integrated into an electronic device. This electronic device can be a vehicle controller or a generator controller. For ease of understanding, the various steps in the control method of this embodiment are executed primarily by the vehicle controller.

[0022] like Figure 1 As shown, this embodiment provides a method for controlling energy recovery in new energy vehicles, including the following steps: S110: Obtain the battery's recyclable power, the high-voltage accessory's power consumption, and the vehicle's overall recyclable power.

[0023] "Battery Recoverable Power" refers to the power that a vehicle battery can recover, which can be found in the battery charge / discharge map table. Batteries include power batteries. Battery recoverable power is an inherent characteristic of the battery and cannot be significantly increased under the same SOC (State of Charge) and temperature. "High-Voltage Accessory Power Consumption" refers to the power consumed by high-voltage accessories in the vehicle, including but not limited to air conditioning, PTC (Positive Temperature Coefficient) thermistors, and DC-DC converters. "Vehicle-wide Recoverable Power" refers to the total power that the entire vehicle needs to recover.

[0024] In one optional implementation, the recyclable power of the vehicle is determined in the following manner: Obtain the mapping relationship between the vehicle's recyclable power and vehicle speed, and determine the vehicle's recyclable power based on the mapping relationship and vehicle speed.

[0025] This implementation method quickly determines the vehicle's recyclable power by mapping it to vehicle speed, and using vehicle speed as the basis for determination. This mapping relationship can be in mathematical or tabular form. In mathematical form, the vehicle speed can be input into the expression to obtain the recyclable power. In tabular form, the recyclable power corresponding to that speed can be found in the table, which is the desired recyclable power. This mapping relationship can be obtained as follows: calibrate when the battery's recyclable power is at its maximum; calibrate the corresponding recyclable torque at different vehicle speeds; the change in recyclable torque needs to be smooth, and the magnitude of the torque and the mapping standard need to meet the vehicle's performance requirements and driving experience requirements. The calibrated recyclable torque also corresponds to the vehicle's recyclable power (the recyclable power can be calculated from the torque and vehicle speed).

[0026] S120. When the total vehicle recoverable power is greater than the sum of the battery recoverable power and the high-voltage accessory power consumption, control the generator to heat up based on the maximum recoverable power of the drive motor coasting energy and the maximum heatable power of the generator; or, control the generator to heat up based on the accelerator pedal depth, the maximum recoverable power of the drive motor coasting energy and the maximum heatable power of the generator.

[0027] When the generator consumes energy, it is necessary to avoid the generator rotating. Therefore, this embodiment chooses to consume energy by heating the generator. For example, the generator controller can generate a weak magnetic current to the stator of the generator, causing the stator winding to heat up and converting the power recovered from the coasting energy into heat energy for consumption.

[0028] If the gradient of the generator's heating power is lower than the gradient of the energy recovery of the drive motor during coasting, it may lead to the recovered power being greater than the consumed power, resulting in battery overcharging. Therefore, this embodiment can use one of the following two methods to avoid this problem.

[0029] Option 1, the step of controlling generator heating based on the maximum power of the drive motor's coasting energy recovery and the generator's maximum heat-generating power, includes: The gradient of the change in the energy recovery power of the drive motor during coasting is determined based on the maximum energy recovery power of the drive motor during coasting. Determine the gradient of the generator's heat output based on the generator's maximum heat output; The generator is controlled to operate when the gradient of the generator's heating power change is greater than the gradient of the drive motor's coasting energy recovery power change, thereby causing the generator to heat up.

[0030] Under the same maximum power P1 of the drive motor coasting energy recovery, there can be multiple gradients of drive motor coasting energy recovery power variation (such as A1, A2, A3, etc.). Similarly, under the same maximum generator heating power P2, there can also be multiple gradients of generator heating power variation (such as B1, B2, B3, etc.). Only when the generator heating power variation gradient is greater than the drive motor coasting energy recovery power variation gradient can the energy consumed by the generator be greater than the energy recovered by the battery. Therefore, the generator must be controlled to operate when the generator heating power variation gradient is greater than the drive motor coasting energy recovery power variation gradient, so that the generator heats up.

[0031] like Figure 2 As shown, this embodiment operates by controlling the generator to operate when the gradient of the generator's heating power change is greater than the gradient of the drive motor's coasting energy recovery power change, thereby causing the generator to heat up and ensuring that the generator can quickly increase its power consumption in a short period of time.

[0032] Option 2, wherein controlling generator heating based on accelerator pedal depth, maximum power of drive motor coasting energy recovery, and maximum generator heat output includes: The gradient of the change in the energy recovery power of the drive motor during coasting is determined based on the maximum energy recovery power of the drive motor during coasting. Determine the gradient of the generator's heat output based on the generator's maximum heat output; When the accelerator pedal depth is less than a preset depth, the generator is controlled to operate when the gradient of the generator's heating power change is greater than or equal to the gradient of the drive motor's coasting energy recovery power change, thereby causing the generator to heat up.

[0033] Similar to Option 1 above, this option also requires determining the gradient of the power change in the drive motor's coasting energy recovery and the gradient of the generator's heat generation power. The difference lies in, for example... Figure 3 As shown, in this embodiment, when the accelerator pedal depth is less than the preset depth, the generator heats up when the gradient of the generator's heating power is greater than the gradient of the drive motor's coasting energy recovery power. This causes the generator to heat up, so that when the car enters the coasting energy recovery condition, the generator heats up before the drive motor torque is converted into recovery torque, which means that the generator enters the consumption state in advance.

[0034] Optionally, the preset depth is 5%, etc.

[0035] In one optional embodiment, the process of controlling generator heat generation further includes: using coolant or generator lubricating oil to dissipate heat from the generator. This embodiment uses coolant or generator lubricating oil to dissipate heat from the generator, preventing overheating and resulting power degradation. The coolant can be water.

[0036] In one optional implementation, the maximum heatable power of the generator is determined by the following method: The generator's maximum heat-generating power is determined by controlling the coolant or generator lubricating oil to dissipate heat from the generator at the maximum allowable operating power of the pump used, and determining the generator's maximum heat-generating power when the continuous heating time is set and the generator stator winding does not overheat.

[0037] Overheating of the windings causes a reduction in generator power. Cooling the generator generates noise. Cooling the generator can be achieved, for example, by starting an oil pump to pump oil for cooling. However, the higher the pump's operating power, the greater the noise and vibration, and the more noticeable the impact on the user. Therefore, the maximum heat-generating power of the generator obtained in this embodiment avoids winding overheating, allows the generator to continuously heat for a set time, and also minimizes noise pollution.

[0038] The maximum permissible operating power is the maximum power at which the pump's noise is imperceptible to the user. The set time is, for example, 30 minutes. When using coolant for cooling, a water pump is used; when using lubricating oil for cooling, an oil pump is used.

[0039] In one alternative implementation, the maximum power of the drive motor for coasting energy recovery is determined in the following manner: Based on the vehicle's recoverable power and speed, determine the theoretical maximum torque for recovering coasting energy from the drive motor; Based on the theoretical maximum torque of the drive motor coasting energy recovery and the set torque of the drive motor coasting energy recovery, the maximum torque of the drive motor coasting energy recovery is determined; The maximum power of the drive motor for coasting energy recovery is determined based on the maximum torque of the drive motor for coasting energy recovery.

[0040] The maximum power of the drive motor's coasting energy recovery obtained in this embodiment is more reasonable, avoiding excessive power that could cause battery overcharging.

[0041] Optionally, the theoretical maximum torque for energy recovery during coasting of the drive motor is calculated using the following formula: The theoretical maximum torque for energy recovery during coasting of the drive motor = vehicle recoverable power * 9550 / (motor speed * δ); Where: motor speed = (vehicle speed × 60) ÷ tire circumference ÷ transmission ratio; tire circumference is obtained from the actual vehicle calculation; transmission ratio is directly substituted into the calculation based on the actual vehicle ratio; δ is the motor efficiency.

[0042] Optionally, the smaller of the theoretical maximum torque for coasting energy recovery of the drive motor and the set torque for coasting energy recovery of the drive motor can be selected as the maximum torque for coasting energy recovery of the drive motor.

[0043] Optionally, the maximum power of the drive motor for coasting energy recovery is calculated using the following formula: Maximum power of drive motor for coasting energy recovery = Maximum torque of drive motor for coasting energy recovery * Drive motor speed / 9550 * δ.

[0044] The aforementioned energy recovery control method for new energy vehicles first obtains the recoverable power of the battery, the power consumed by high-voltage accessories, and the recoverable power of the entire vehicle. When the recoverable power of the entire vehicle is greater than the sum of the recoverable power of the battery and the power consumed by the high-voltage accessories, the generator heating is controlled based on the maximum recoverable power of the drive motor during coasting and the maximum heat-generating power of the generator; or, based on the accelerator pedal depth, the maximum recoverable power of the drive motor during coasting, and the maximum heat-generating power of the generator. This method, when the recoverable power of the entire vehicle is greater than the sum of the recoverable power of the battery and the power consumed by the high-voltage accessories, controls the generator heating based on the maximum recoverable power of the drive motor during coasting and the maximum heat-generating power of the generator, or further based on the accelerator pedal depth. This ensures that power that cannot be recovered by the battery is consumed by the generator heating (such as the heating of the generator stator windings), maintaining a deceleration feel during coasting energy recovery. It also prevents battery overcharging and brake pad damage, and requires no new components, thus avoiding additional costs.

[0045] Example 2 like Figure 4 As shown, this embodiment provides an energy recovery control device for new energy vehicles, including: The acquisition module 201 is used to acquire the battery's recyclable power, the high-voltage accessory's power consumption, and the vehicle's recyclable power. The generator heating control module 202 is used to control the generator heating based on the maximum power of the drive motor coasting energy recovery and the maximum heatable power of the generator when the total vehicle recyclable power is greater than the sum of the battery recyclable power and the power consumed by the high voltage accessory; or, based on the accelerator pedal depth, the maximum power of the drive motor coasting energy recovery and the maximum heatable power of the generator.

[0046] The device is used to perform the above method, and therefore has at least the functional modules and beneficial effects corresponding to the above method.

[0047] Example 3 like Figure 5 As shown, this embodiment provides an electronic device, including: At least one processor; and A memory communicatively connected to at least one of the processors; wherein, The memory stores instructions executable by at least one of the processors to enable the processor to perform the described method. Since at least one processor in the electronic device is capable of performing the described method, it thus possesses at least the same advantages as the described method.

[0048] Optionally, the electronic device also includes interfaces for connecting the various components, including high-speed interfaces and low-speed interfaces. The components are interconnected using different buses and can be mounted on a common motherboard or otherwise installed as needed. The processor can process instructions executed within the electronic device, including instructions stored in or on memory to display graphical information of a GUI (Graphical User Interface) on an external input / output device (such as a display device coupled to the interface). In other embodiments, multiple processors can be used with multiple memories, and / or multiple buses can be used with multiple memories, if desired. Similarly, multiple electronic devices (e.g., as a server array, a group of blade servers, or a multiprocessor system) can be connected, each providing some of the necessary operations. Figure 5 Take processor 301 as an example.

[0049] The memory 302, as a computer-readable storage medium, can be used to store software programs, computer-executable programs, and modules, such as the program instructions / modules corresponding to the new energy vehicle energy recovery control method in this application embodiment (e.g., the acquisition module and generator heating control module in the new energy vehicle energy recovery control device). The processor 301 executes various functional applications and data processing of the device by running the software programs, instructions, and modules stored in the memory 302, thereby realizing the aforementioned new energy vehicle energy recovery control method.

[0050] The memory 302 may primarily include a program storage area and a data storage area. The program storage area may store the operating system and applications required for at least one function; the data storage area may store data created based on terminal usage. Furthermore, the memory 302 may include high-speed random access memory and non-volatile memory, such as at least one disk storage device, flash memory device, or other non-volatile solid-state storage device. In some instances, the memory 302 may further include memory remotely located relative to the processor 301, which can be connected to the device via a network. Examples of such networks include, but are not limited to, the Internet, intranets, local area networks, mobile communication networks, and combinations thereof.

[0051] The electronic device may further include an input device 303 and an output device 304. The processor 301, memory 302, input device 303, and output device 304 can be connected via a bus or other means. Figure 5 Taking the example of a connection between China and Israel via a bus.

[0052] Input device 303 can receive input digital or character information, and output device 304 may include a display device, an auxiliary lighting device (e.g., an LED), and a haptic feedback device (e.g., a vibration motor). The display device may include, but is not limited to, a liquid crystal display (LCD), a light-emitting diode (LED) display, and a plasma display. In some embodiments, the display device may be a touchscreen.

[0053] Example 4 This embodiment provides a computer-readable storage medium storing computer instructions for causing a computer to perform the methods described above. The computer instructions on this computer-readable storage medium, used to cause a computer to perform the methods described above, thus have at least the same advantages as the methods described above.

[0054] The medium in this application may be any combination of one or more computer-readable media. The medium may be a computer-readable signal medium or a computer-readable storage medium. The medium may be, for example,—but not limited to—an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination thereof. More specific examples of the medium (a non-exhaustive list) include: an electrical connection having one or more wires, a portable computer disk, a hard disk, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), optical storage device, magnetic storage device, or any suitable combination thereof. In this document, the medium may be any tangible medium containing or storing a program that can be used by or in conjunction with an instruction execution system, apparatus, or device.

[0055] Computer-readable signal media may include data signals propagated in baseband or as part of a carrier wave, carrying computer-readable program code. Such propagated data signals may take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination thereof. Computer-readable signal media may also be any computer-readable medium other than computer-readable storage media, capable of sending, propagating, or transmitting programs for use by or in connection with an instruction execution system, apparatus, or device.

[0056] Program code contained on a computer-readable medium may be transmitted using any suitable medium, including but not limited to wireless, wire, optical fiber, RF (Radio Frequency), or any suitable combination thereof.

[0057] Computer program code for performing the operations of this application can be written in one or more programming languages ​​or a combination thereof. Programming languages ​​include object-oriented programming languages—such as Java, Smalltalk, and C++—as well as conventional procedural programming languages—such as the "C" language or similar programming languages. The program code can be executed entirely on the user's computer, partially on the user's computer, as a standalone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In cases involving remote computers, the remote computer can be connected to the user's computer via any type of network—including a local area network (LAN) or a wide area network (WAN)—or can be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0058] It should be understood that the various forms of processes shown above can be used to rearrange, add, or delete steps. For example, the steps described in this application can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution disclosed in this application can be achieved, and this is not limited herein.

[0059] The specific embodiments described above do not constitute a limitation on the scope of protection of this application. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A method for controlling energy recovery in new energy vehicles, characterized in that, include: Obtain the recyclable power of the battery, the power consumed by high-voltage accessories, and the recyclable power of the entire vehicle; When the total vehicle regenerative power is greater than the sum of the battery regenerative power and the power consumed by the high-voltage accessories, the generator heating is controlled based on the maximum regenerative power of the drive motor during coasting and the maximum heat-generating power of the generator; or, the generator heating is controlled based on the accelerator pedal depth, the maximum regenerative power of the drive motor during coasting, and the maximum heat-generating power of the generator.

2. The energy recovery control method for new energy vehicles according to claim 1, characterized in that, The recyclable power of the entire vehicle is determined in the following way: Obtain the mapping relationship between the vehicle's recyclable power and vehicle speed, and determine the vehicle's recyclable power based on the mapping relationship and vehicle speed.

3. The energy recovery control method for new energy vehicles according to claim 1, characterized in that, The method of controlling generator heating based on the maximum power of energy recovery during driving motor coasting and the maximum heatable power of generator includes: The gradient of the change in the energy recovery power of the drive motor during coasting is determined based on the maximum energy recovery power of the drive motor during coasting. Determine the gradient of the generator's heat output based on the generator's maximum heat output; The generator is controlled to operate when the gradient of the generator's heating power change is greater than the gradient of the drive motor's coasting energy recovery power change, thereby causing the generator to heat up.

4. The energy recovery control method for new energy vehicles according to claim 1, characterized in that, The method of controlling generator heating based on accelerator pedal depth, maximum power of drive motor coasting energy recovery, and maximum heatable power of generator includes: The gradient of the change in the energy recovery power of the drive motor during coasting is determined based on the maximum energy recovery power of the drive motor during coasting. Determine the gradient of the generator's heat output based on the generator's maximum heat output; When the accelerator pedal depth is less than a preset depth, the generator is controlled to operate when the gradient of the generator's heating power change is greater than or equal to the gradient of the drive motor's coasting energy recovery power change, thereby causing the generator to heat up.

5. The energy recovery control method for new energy vehicles according to claim 1, characterized in that, The process of controlling generator heating also includes: Coolant or generator lubricating oil is used to dissipate heat from the generator.

6. The energy recovery control method for new energy vehicles according to claim 1, characterized in that, The maximum heatable power of the generator is determined using the following method: The generator's maximum heat-generating power is determined by controlling the coolant or generator lubricating oil to dissipate heat from the generator at the maximum allowable operating power of the pump used, and determining the generator's maximum heat-generating power when the continuous heating time is set and the generator stator winding does not overheat.

7. The energy recovery control method for new energy vehicles according to claim 1, characterized in that, The maximum power of the drive motor for coasting energy recovery is determined in the following way: Based on the vehicle's recoverable power and speed, determine the theoretical maximum torque for recovering coasting energy from the drive motor; The maximum torque for recuperating energy during coasting is determined based on the theoretical maximum torque of the drive motor and the set torque for recuperating energy during coasting.

8. A new energy vehicle energy recovery control device, characterized in that, include: The acquisition module is used to acquire the battery's recyclable power, the high-voltage accessory's power consumption, and the vehicle's overall recyclable power. The generator heating control module is used to control the generator heating based on the maximum recoverable power of the drive motor during coasting and the maximum heatable power of the generator when the recoverable power of the whole vehicle is greater than the sum of the recoverable power of the battery and the power consumed by the high-voltage accessory; or, based on the accelerator pedal depth, the maximum recoverable power of the drive motor during coasting and the maximum heatable power of the generator.

9. An electronic device, characterized in that, include: At least one processor, and a memory communicatively connected to at least one of the processors; The memory stores instructions executable by at least one of the processors, which are executed to enable the at least one of the processors to perform the method of any one of claims 1-7.

10. A computer-readable storage medium, characterized in that, The medium stores computer instructions for causing the computer to perform the method of any one of claims 1-7.

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