New energy vehicle energy recovery method and device, new energy vehicle and storage medium

Abstract

The invention provides a new energy vehicle energy recovery method and device, a new energy vehicle and a storage medium, and belongs to the technical field of new energy vehicle control. The method comprises the steps that the capacity specification of the supercapacitor is determined according to the expected maximum recovery energy of the vehicle; determining the optimized recharging power of the power battery according to the capacity specification, wherein the optimized recharging power is lower than the rated recharging power of the power battery; when the new energy vehicle recovers energy, real-time recovery power is obtained; comparing the real-time recovery power with the optimized recharging power; and distributing the recovered energy between the power battery and the super capacitor according to a comparison result. By distributing the recycled energy between the power battery and the supercapacitor, the energy recycling power of the power battery is reduced, the instantaneous overcharge and temperature rise phenomena caused by large current pulse are avoided, the risk of irreversible damage to the battery under the limiting working condition is reduced, the service life of the power battery is prolonged, and the safety performance of the power battery is improved.

Description

Technical Field

[0001] This application relates to the field of new energy vehicle control technology, specifically to a new energy vehicle energy recovery method, device, new energy vehicle, and storage medium. Background Technology

[0002] In new energy vehicles, kinetic energy recovery is a key technology for improving energy utilization efficiency. Currently, the energy recovered by vehicles is mainly stored by charging the power battery through a power converter. However, the recharge power generated during vehicle braking and other operating conditions is often characterized by high instantaneous power and instability, which can easily lead to instantaneous overcharging of the power battery, thereby accelerating temperature rise, seriously affecting battery safety, and shortening the cycle life of the power battery. Summary of the Invention

[0003] The purpose of this application is to provide a method, device, new energy vehicle, and storage medium for energy recovery in new energy vehicles.

[0004] To achieve the above objectives, the first aspect of this application provides a method for energy recovery in new energy vehicles, comprising: The capacity specification of the supercapacitor is determined based on the vehicle's expected maximum recoverable energy. The optimal recharge power of the power battery is determined based on its capacity specifications, and the optimal recharge power is lower than the rated recharge power of the power battery. When new energy vehicles recover energy, obtain the real-time recovery power; Compare real-time recovery power with optimized recharge power; Based on the comparison results, the recovered energy will be distributed between the power battery and the supercapacitor.

[0005] In this embodiment of the application, the distribution of the recovered energy between the power battery and the supercapacitor based on the comparison result includes: when the real-time recovered power is greater than the optimized recharge power, controlling the power battery to charge according to the optimized recharge power, and controlling the supercapacitor to receive the overflow power; after the energy recovery is completed, controlling the supercapacitor to charge the power battery with the optimized recharge power. In this embodiment of the application, controlling the supercapacitor to charge the power battery with optimized recharge power includes: after the supercapacitor receives the overflow power, if the vehicle has a power demand within a preset time, determining whether the sum of the power demand and the optimized recharge power is greater than the rated power of the supercapacitor; if the sum of the power demand and the optimized recharge power is greater than the rated power of the supercapacitor, controlling the supercapacitor to output at the rated power, and controlling the power battery to output or recharge at the difference between the power demand and the rated power of the supercapacitor.

[0006] In this embodiment of the application, controlling the supercapacitor to charge the power battery with optimized recharge power further includes: when the sum of the power demand and the optimized recharge power is less than or equal to the rated power of the supercapacitor, controlling the supercapacitor to output with the sum of the power demand and the optimized recharge power.

[0007] In this embodiment of the application, the distribution of the recovered energy between the power battery and the supercapacitor based on the comparison results further includes: when the real-time recovery power is less than or equal to the optimized recharge power, controlling the power battery to recover energy at the optimized recharge power.

[0008] In this embodiment of the application, determining the optimized recharge power of the power battery based on its capacity specifications includes: obtaining an initial recharge power spectrum of the power battery, the initial recharge power spectrum including the initial recharge power of the power battery under multiple preset pulse durations; converting the capacity of the supercapacitor according to a first preset ratio; determining the power of the supercapacitor under multiple preset pulse durations based on the ratio of the converted supercapacitor capacity to the multiple preset pulse durations; and determining the optimized recharge power of the power battery under multiple preset pulse durations based on the difference between the initial recharge power of the power battery and the power of the supercapacitor under the corresponding pulse duration.

[0009] In this embodiment of the application, determining the optimized recharge power of the power battery based on the capacity specification further includes: obtaining the real-time battery health status of the power battery and the corresponding second recharge power spectrum; calculating the capacity of the supercapacitor according to a second preset ratio; and determining the optimized recovery power of the power battery under the real-time battery health status based on the calculated capacity of the supercapacitor and the second recharge power spectrum.

[0010] In this embodiment of the application, the new energy vehicle is a new energy crane, and the energy recovery method further includes: determining the expected maximum recoverable energy of the crane based on the weight, braking requirements, maximum lifting weight, and maximum lifting height of the new energy crane. The second aspect of this application provides an energy recovery device for new energy vehicles, comprising: The memory is configured to store instructions; The processor is configured to retrieve instructions from memory and, when executing instructions, to implement the aforementioned energy recovery method for new energy vehicles.

[0011] A third aspect of this application provides a new energy vehicle, including the aforementioned new energy vehicle energy recovery device.

[0012] A fourth aspect of this application provides a machine-readable storage medium storing instructions that, when executed by a processor, configure the processor to perform the aforementioned energy recovery method for new energy vehicles.

[0013] Through the above technical solution, the recharge power of the power battery is recalibrated according to the capacity specifications of the supercapacitor to obtain the optimized recharge power of the power battery. Based on the real-time recovery power when the new energy vehicle recovers energy and the optimized recharge power of the power battery, the recovered energy is distributed between the power battery and the supercapacitor. The energy recovery power of the power battery is reduced, avoiding instantaneous overcharging and temperature rise caused by large current pulses. This reduces the risk of irreversible damage to the battery under extreme conditions and improves the service life and safety performance of the power battery.

[0014] Other features and advantages of the embodiments of this application will be described in detail in the following detailed description section. Attached Figure Description

[0015] The accompanying drawings are provided to further illustrate the embodiments of this application and form part of the specification. They are used together with the following detailed description to explain the embodiments of this application, but do not constitute a limitation on the embodiments of this application. In the drawings: Figure 1 The schematic diagram illustrates a process flow diagram of a new energy vehicle energy recovery method according to an embodiment of this application; Figure 2 The illustration shows a schematic diagram of the process for formulating an energy recovery strategy according to an embodiment of this application; Figure 3 A schematic diagram of a new energy crane energy management system according to an embodiment of this application is shown. Figure 4 The schematic diagram illustrates a process flow diagram of another energy recovery method for new energy vehicles according to an embodiment of this application; Figure 5 The diagram illustrates the internal structure of a computer device according to an embodiment of this application. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only for illustration and explanation of the embodiments of this application and are not intended to limit the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0017] Figure 1 A schematic flowchart illustrating a new energy vehicle energy recovery method according to an embodiment of this application is shown. Figure 1 As shown in one embodiment of this application, a method for energy recovery in new energy vehicles is provided, comprising the following steps: Step 101: Determine the capacity specifications of the supercapacitor based on the vehicle's expected maximum recoverable energy. Step 102: Determine the optimized recharge power of the power battery based on its capacity specifications. The optimized recharge power is lower than the rated recharge power of the power battery. Step 103: Obtain the real-time recovery power when the new energy vehicle recovers energy.

[0018] Step 104: Compare the real-time recovered power with the optimized recharge power.

[0019] Step 105: Based on the comparison results, the recovered energy is distributed between the power battery and the supercapacitor.

[0020] The expected maximum recoverable energy refers to the maximum theoretical recoverable energy that a new energy vehicle can experience within its specifications. The capacity specification of the supercapacitor can be determined based on the expected maximum recoverable energy. For example, in one embodiment, the supercapacitor capacity is determined as a certain percentage of the expected maximum recoverable energy. When design redundancy is required, the percentage can be set to be greater than 100%, while when the energy storage capacity of the supercapacitor needs to be fully utilized, the percentage can be set to be less than or equal to 100%. The processor can determine the optimized recharge power of the power battery based on the supercapacitor's capacity specification, wherein the optimized recharge power is lower than the rated recharge power of the power battery. Then, when the new energy vehicle recovers energy, the processor can compare the acquired real-time recoverable power with the optimized recharge power and allocate the recovered energy to the power battery and supercapacitor based on the comparison result.

[0021] In one embodiment, determining the optimal recharge power of the power battery based on its capacity specifications includes: obtaining an initial recharge power spectrum of the power battery, which includes the initial recharge power of the power battery under multiple preset pulse durations; calculating the capacity of the supercapacitor according to a first preset ratio; determining the power of the supercapacitor under multiple preset pulse durations based on the ratio of the calculated supercapacitor capacity to the multiple preset pulse durations; and determining the optimal recharge power of the power battery under multiple preset pulse durations based on the difference between the initial recharge power of the power battery and the power of the supercapacitor under the corresponding pulse duration. Specifically, in one embodiment, using a% of the expected maximum recovered energy as the capacity of the supercapacitor, the optimal recharge power of the power battery is determined according to the following formula:

[0022] in, To optimize recharge power, The initial recharge power at different pulse times is determined based on the initial recharge power spectrum. For the expected maximum recovery power, The first preset ratio, is the pulse duration. Determining the optimal recharge power based on the converted capacity of the supercapacitor can limit the usable capacity range of the supercapacitor, thereby extending its service life.

[0023] In one embodiment, determining the optimized recharge power of the power battery based on its capacity specifications further includes: acquiring the real-time battery health status of the power battery and the corresponding second recharge power spectrum; calculating the capacity of the supercapacitor according to a second preset ratio, wherein the second preset ratio is greater than a first preset ratio; and determining the optimized recovery power of the power battery under the real-time battery health status based on the calculated supercapacitor capacity and the second recharge power spectrum. For example, in one embodiment, if a% of the expected maximum recoverable energy is used as the capacity of the supercapacitor, and the real-time SOH of the power battery is 80%, then the optimized recharge power of the power battery is calculated according to the following formula:

[0024] in, Optimized recharge power when the SOH of the power battery is 80%. This refers to the initial recharge power under different pulse durations when the SOH of the power battery is 80%, as determined based on the second recovery power spectrum. This is the second preset ratio. The duration of the pulse. The value is a variable, determined based on the real-time SOH of the supercapacitor, and decreases as the real-time SOH of the supercapacitor decreases. Furthermore, when the SOH of the power battery changes, a second preset ratio can be calculated using linear interpolation. For example, when the SOH of the power battery is 90%, the second preset ratio is: ( ,in The first preset ratio, This is the second preset ratio when the SOH of the power battery is 80%. As power batteries age throughout their lifespan, they experience capacity reduction and increased internal resistance. Due to variations in operating conditions and environments, the increase in internal resistance is difficult to accurately assess and carries significant error. Furthermore, the internal resistance differences among individual cells within the power battery are also substantial. High-current recharging can lead to significant differences in the amount of charge recharged from different cells, causing capacity imbalances among individual cells and triggering a series of subsequent malfunctions. By increasing the proportion of power received by the supercapacitor, high-current recharging of the power battery can be avoided, thus mitigating the aforementioned risks.

[0025] In one embodiment, distributing the recovered energy between the power battery and the supercapacitor based on the comparison results includes: when the real-time recovered power is greater than the optimized recharge power, controlling the power battery to charge at the optimized recharge power and controlling the supercapacitor to receive the overflow power; after energy recovery is complete, controlling the supercapacitor to charge the power battery at the optimized recharge power. By receiving and storing the overflow power during the energy recovery process through the supercapacitor and converting it into optimized recharge power to recharge the power battery, the recharge power of the power battery can be reduced, mitigating the temperature rise caused by high-power recharge. It can also reduce the risk of errors caused by incorrect recharge power retrieval due to errors in temperature, voltage, or battery state of charge (SOC) measurements.

[0026] In one embodiment, controlling the supercapacitor to charge the power battery with optimized recharge power includes: after the supercapacitor receives overflow power, if the vehicle has a power demand within a preset time, determining whether the sum of the power demand and the optimized recharge power is greater than the rated power of the supercapacitor; if the sum of the power demand and the optimized recharge power is greater than the rated power of the supercapacitor, controlling the supercapacitor to output at its rated power, wherein priority is given to meeting the power demand of the vehicle's electrical appliances, and the power battery outputs or recharges based on the difference between the rated power of the supercapacitor and the optimized recharge power, wherein the power demand < the rated power of the supercapacitor < the sum of the power demand and the optimized recharge power.

[0027] In one embodiment, controlling the supercapacitor to optimize the recharge power for charging the power battery further includes: when the sum of the power demand and the optimized recharge power is less than or equal to the rated power of the supercapacitor, controlling the supercapacitor to output the sum of the power demand and the optimized recharge power, wherein the optimized recharge power is used to charge the power battery, and the power demand is used to output to each working motor and electrical appliance. By receiving and storing the overflow power during the energy recovery process using a supercapacitor, and outputting the stored energy to the vehicle when there is a power demand, energy waste can be reduced and frequent recharging of the power battery can be avoided.

[0028] In one embodiment, allocating the recovered energy between the power battery and the supercapacitor based on the comparison results further includes: controlling the power battery to charge at the optimized charging power when the real-time recovered power is less than or equal to the optimized charging power.

[0029] In one embodiment, the new energy vehicle is a new energy crane, and the energy recovery method further includes: determining the expected maximum recoverable energy of the crane based on the weight, braking requirements, maximum lifting weight, and maximum lifting height of the new energy crane.

[0030] The above embodiments provide a method for energy recovery in new energy vehicles. The method recalibrates the recharge power of the power battery based on the capacity specifications of the supercapacitor to obtain an optimized recharge power. Based on the real-time energy recovery power of the new energy vehicle and the optimized recharge power of the power battery, the recovered energy is distributed between the power battery and the supercapacitor. This reduces the energy recovery power of the power battery, avoiding instantaneous overcharging and temperature rise caused by large current pulses, lowering the risk of irreversible damage to the battery under extreme conditions, and improving the service life and safety performance of the power battery.

[0031] Figure 1 This is a flowchart illustrating a method for energy recovery in new energy vehicles in one embodiment. It should be understood that, although... Figure 1 The steps in the flowchart are shown sequentially as indicated by the arrows, but these steps are not necessarily executed in the order indicated by the arrows. Unless otherwise explicitly stated herein, there is no strict order in which these steps are executed, and they can be performed in other orders. Figure 1 At least some of the steps in the process may include multiple sub-steps or multiple stages. These sub-steps or stages are not necessarily completed at the same time, but can be executed at different times. The execution order of these sub-steps or stages is not necessarily sequential, but can be executed in turn or alternately with other steps or at least some of the sub-steps or stages of other steps.

[0032] In one embodiment, the new energy vehicle is a new energy crane, and the energy recovery method for the new energy vehicle includes: Figure 2 As shown, Figure 2 This illustration schematically depicts a flowchart of an energy recovery strategy formulation according to an embodiment of this application. It obtains the overall vehicle weight, braking requirements, maximum lifting weight, and maximum lowering height of a new energy crane, and determines the expected maximum recoverable energy that the crane within its design specifications can experience based on these parameters. The capacity specification of the supercapacitor is determined based on the expected maximum recoverable energy; specifically, a% of the expected maximum recoverable energy is selected as the supercapacitor's capacity. An initial recharge power map (i.e., initial recharge power spectrum) of the power battery is obtained, and the recharge power of the power battery is recalibrated based on the supercapacitor's capacity specification and the initial recharge power map to obtain the optimized recovery power of the power battery. Specifically, this includes: calculating the supercapacitor's capacity according to a first preset ratio; determining the supercapacitor's power under multiple preset pulse durations based on the ratio of the calculated supercapacitor's capacity to multiple preset pulse durations; and determining the optimized recharge power of the power battery under multiple preset pulse durations based on the difference between the power battery's initial recharge power and the supercapacitor's power under the corresponding pulse duration.

[0033] in, To optimize recharge power, The initial recharge power at different pulse times is determined based on the initial recharge power spectrum. For the expected maximum recovery power, The first preset ratio, Let be the pulse time, where Furthermore, the real-time state of health (SOH) of the power battery and the corresponding second recharge power spectrum can be obtained; the capacity of the supercapacitor can be calculated according to a second preset ratio; and the optimized recovery power of the power battery under the real-time state of health can be determined based on the calculated capacity of the supercapacitor and the second recharge power spectrum, wherein the second preset ratio is greater than the first preset ratio.

[0034] like Figure 3 As shown, Figure 3 A schematic diagram of a new energy crane energy management system according to an embodiment of this application is shown, mainly including a power battery, a high-voltage distribution box, a bidirectional DC / DC converter, a supercapacitor, a travel motor controller, a work motor controller, a travel motor, a work motor, an electrical accessory controller, electrical accessories, and a VCU. The power battery serves as the energy source to drive the travel motor, electrical accessories, and each work motor. The VCU receives the power demands of each controller and calls upon the power battery energy in real time, outputting it through the corresponding controller. When the vehicle brakes or the load is lowered during operation, the VCU recovers energy and recharges it back to the power battery and supercapacitor. Specifically, as shown... Figure 4As shown, during vehicle braking or load lowering, the vehicle performs energy recovery, acquiring real-time recovery power and comparing it with optimized recovery power. Based on the comparison result, the recovered energy is distributed between the power battery and the supercapacitor. Specifically, when the real-time recovery power is less than or equal to the optimized recovery power, the power battery is controlled to charge at the real-time recovery power; when the real-time recovery power is greater than the optimized recovery power, the power battery is controlled to charge at the optimized recovery power, and the supercapacitor receives the overflow power; after charging is complete, the supercapacitor is controlled to charge the power battery at the optimized recovery power. Specifically, after the supercapacitor receives the overflow power, if the vehicle has a power demand within a preset time, it is determined whether the sum of the power demand and the optimized recharge power is greater than the rated power of the supercapacitor. If the sum is greater than the rated power, the supercapacitor is controlled to output at its rated power, prioritizing the power demand of the vehicle's electrical appliances, while the power battery outputs or recharges at the difference between its rated power and the optimized recharge power. If the sum is less than or equal to the rated power, the supercapacitor outputs at the sum of the power demand and the optimized recharge power, charging the power battery with the optimized recharge power and outputting to the various working motors and electrical appliances with the power demand power. If the vehicle has no power demand within the preset time, the supercapacitor is controlled to output at the optimized recharge power.

[0035] In one embodiment, a new energy vehicle energy recovery device is provided, comprising: The memory is configured to store instructions; The processor is configured to retrieve instructions from memory and, when executing instructions, to implement the aforementioned energy recovery method for new energy vehicles.

[0036] The new energy vehicle energy recovery device includes a processor and a memory. The processor contains a kernel, which retrieves the corresponding program units from the memory. One or more kernels can be configured, and the energy recovery method for new energy vehicles can be implemented by adjusting the kernel parameters.

[0037] The memory may include non-permanent memory in computer-readable media, such as random access memory (RAM) and / or non-volatile memory, such as read-only memory (ROM) or flash RAM, and the memory includes at least one memory chip.

[0038] This application provides a storage medium storing a program that, when executed by a processor, implements the above-described energy recovery method for new energy vehicles.

[0039] This application provides a processor for running a program, wherein the program executes the above-described energy recovery method for new energy vehicles.

[0040] In one embodiment, a computer device is provided, which may be a server, and its internal structure diagram may be as follows: Figure 5 As shown in the figure, the computer device includes a processor A01, a network interface A02, and a memory (not shown) connected via a system bus. The processor A01 provides computing and control capabilities. The memory includes internal memory A03 and a non-volatile storage medium A04. The non-volatile storage medium A04 stores an operating system B01 and a computer program B02. The internal memory A03 provides an environment for the operation of the operating system B01 and the computer program B02 stored in the non-volatile storage medium A04. The network interface A02 is used for communication with external terminals via a network connection. When executed by the processor A01, the computer program B02 implements an energy recovery method for new energy vehicles.

[0041] Those skilled in the art will understand that Figure 5 The structure shown is merely a block diagram of a portion of the structure related to the present application and does not constitute a limitation on the computer device to which the present application is applied. Specific computer devices may include more or fewer components than those shown in the figure, or combine certain components, or have different component arrangements.

[0042] This application provides a computer (electronic) device, which includes a processor, a memory, and a program stored in the memory and executable on the processor. When the processor executes the program, it implements the steps of any of the above-mentioned new energy vehicle energy recovery methods.

[0043] This application also provides a computer program product that, when executed on a data processing device, is suitable for executing a program that initializes a method for energy recovery in new energy vehicles.

[0044] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0045] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0046] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0047] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0048] In a typical configuration, a computing device includes one or more processors (CPU), input / output interfaces, network interfaces, and memory.

[0049] Memory may include non-persistent memory in computer-readable media, such as random access memory (RAM) and / or non-volatile memory, such as read-only memory (ROM) or flash RAM. Memory is an example of computer-readable media.

[0050] Computer-readable media includes both permanent and non-permanent, removable and non-removable media that can store information using any method or technology. Information can be computer-readable instructions, data structures, modules of programs, or other data. Examples of computer storage media include, but are not limited to, phase-change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technologies, CD-ROM, digital versatile optical disc (DVD) or other optical storage, magnetic tape, magnetic magnetic disk storage or other magnetic storage devices, or any other non-transferable medium that can be used to store information accessible by a computing device. As defined herein, computer-readable media does not include transient computer-readable media, such as modulated data signals and carrier waves.

[0051] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0052] The above are merely embodiments of this application and are not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A method for energy recovery in new energy vehicles, characterized in that, The new energy vehicle includes at least a power battery and a supercapacitor, and the method includes: The capacity specification of the supercapacitor is determined based on the vehicle's expected maximum recoverable energy. The optimized recharge power of the power battery is determined according to the capacity specification, and the optimized recharge power is lower than the rated recharge power of the power battery. When the new energy vehicle recovers energy, the real-time recovery power is obtained; Compare the real-time recovery power with the optimized recharge power; Based on the comparison results, the recovered energy is distributed between the power battery and the supercapacitor.

2. The energy recovery method for new energy vehicles according to claim 1, characterized in that, The step of distributing the recovered energy between the power battery and the supercapacitor based on the comparison results includes: When the real-time recovery power is greater than the optimized recovery power, the power battery is controlled to charge according to the optimized recovery power, and the supercapacitor is controlled to receive the overflow power. After energy recovery is complete, the supercapacitor is controlled to charge the power battery at the optimized recharge power.

3. The energy recovery method for new energy vehicles according to claim 2, characterized in that, The step of controlling the supercapacitor to charge the power battery at the optimized recharge power includes: After the supercapacitor receives the overflow power, if the vehicle has a power demand within a preset time, it is determined whether the sum of the power demand and the optimized recharge power is greater than the rated power of the supercapacitor. If the sum of the power demand and the optimized recharge power is greater than the rated power of the supercapacitor, the supercapacitor is controlled to output at its rated power, and the power battery is controlled to output or recharge at the difference between the power demand and the rated power of the supercapacitor.

4. The energy recovery method for new energy vehicles according to claim 3, characterized in that, The method of controlling the supercapacitor to charge the power battery at the optimized recharge power further includes: If the sum of the power demand and the optimized recharge power is less than or equal to the rated power of the supercapacitor, the supercapacitor is controlled to output power at the sum of the power demand and the optimized recharge power.

5. The energy recovery method for new energy vehicles according to claim 2, characterized in that, The step of distributing the recovered energy between the power battery and the supercapacitor based on the comparison results further includes: when the real-time recovery power is less than or equal to the optimized recharge power, controlling the power battery to recover energy at the optimized recharge power.

6. The energy recovery method for new energy vehicles according to claim 1, characterized in that, Determining the optimized recharge power of the power battery based on the capacity specification includes: Obtain the initial recharge power spectrum of the power battery, which includes the initial recharge power of the power battery under multiple preset pulse durations; The capacity of the supercapacitor is calculated according to a first preset ratio; The power of the supercapacitor under the multiple preset pulse durations is determined based on the ratio of the converted capacity of the supercapacitor to the multiple preset pulse durations; Based on the difference between the initial recharge power of the power battery and the power of the supercapacitor under the corresponding pulse duration, the optimized recharge power of the power battery under the multiple preset pulse durations is determined.

7. The energy recovery method for new energy vehicles according to claim 6, characterized in that, The step of determining the optimized recharge power of the power battery based on the capacity specification further includes: Obtain the real-time battery health status of the power battery and the corresponding second recharge power spectrum; The capacity of the supercapacitor is calculated according to a second preset ratio, wherein the second preset ratio is greater than the first preset ratio; The optimized recovery power of the power battery under the real-time battery health state is determined based on the converted capacity of the supercapacitor and the second recharge power spectrum.

8. The energy recovery method for new energy vehicles according to claim 1, characterized in that, The new energy vehicle is a new energy crane, and the energy recovery method further includes: determining the expected maximum recoverable energy of the crane based on the weight, braking requirements, maximum lifting weight, and maximum lifting height of the new energy crane.

9. An energy recovery device for new energy vehicles, characterized in that, include: The memory is configured to store instructions; The processor is configured to retrieve the instructions from the memory and, when executing the instructions, to implement the energy recovery method for new energy vehicles according to any one of claims 1 to 8.

10. A new energy vehicle, characterized in that, The new energy vehicle includes the new energy vehicle energy recovery device according to claim 9.

11. A machine-readable storage medium storing instructions thereon, characterized in that, When executed by a processor, this instruction causes the processor to be configured to perform the energy recovery method for new energy vehicles according to any one of claims 1 to 8.

Images