An energy distribution method, device, equipment and storage medium of a hybrid vehicle

Abstract

The application discloses an energy distribution method, device and equipment of a hybrid vehicle and a storage medium, and the method comprises the following steps: acquiring a change curve between power generation power of an engine and oil consumption power generation, and determining vehicle demand oil consumption power generation under a current working condition based on the change curve and vehicle demand power under the current working condition. A preset power generation power range is discretized, a plurality of selected power generation powers are determined, and the oil consumption power generation corresponding to each selected power generation power is determined; the power generation time corresponding to each selected power generation power is determined, and a candidate power generation power meeting a preset condition is determined from the selected power generation powers; and the target power generation power of the engine under the current working condition is determined based on the oil consumption power generation and the power generation time corresponding to the candidate power generation power and the current speed difference value of the engine. Through the technical scheme of the embodiment of the application, flexible distribution of energy of the hybrid vehicle is realized, energy utilization efficiency is improved, and energy waste is reduced.

Description

Technical Field

[0001] This invention relates to the field of new energy vehicle technology, and in particular to an energy distribution method, device, equipment and storage medium for hybrid vehicles. Background Technology

[0002] With the development of new energy vehicle technology, the driving range of new energy vehicles has become increasingly important. How to increase the driving range of new energy vehicles has become a crucial factor restricting the development of new energy vehicle technology.

[0003] Currently, for hybrid vehicles with multiple energy sources, the industry's energy management technology is mainly based on a fixed energy distribution control method. When the range extender starts, it bears most of the vehicle's power demand; if the range extender cannot handle it, the battery will automatically take over. However, this method has low flexibility, resulting in low energy utilization and some energy waste. Summary of the Invention

[0004] This invention provides a method, apparatus, device, and storage medium for energy distribution in hybrid vehicles, so as to achieve flexible energy distribution in hybrid vehicles, improve energy utilization efficiency, and reduce energy waste.

[0005] In a first aspect, embodiments of the present invention provide an energy distribution method for a hybrid vehicle, comprising:

[0006] Based on the universal characteristic curve of the engine in the engine range extender, the curve of the change between the engine's power generation and fuel consumption power generation is determined.

[0007] Based on the curve showing the change between power generation and fuel consumption power generation and the vehicle's power demand under the current operating conditions, the vehicle's required fuel consumption power generation under the current operating conditions is determined.

[0008] The preset power generation range is discretized based on the preset power interval to determine multiple candidate power generation powers. Based on the change curve between the power generation power and the fuel consumption power generation, the fuel consumption power generation corresponding to each candidate power generation power is determined.

[0009] Based on the battery charging and discharging efficiency, the vehicle's required power, the vehicle's required fuel consumption and power generation, the fuel consumption and power generation corresponding to each candidate power and the required time, the power generation time corresponding to each candidate power is determined.

[0010] Based on the vehicle's required power, the vehicle's required fuel consumption and power generation, the fuel consumption and power generation corresponding to each candidate power and the power generation time, and the required time, candidate power that meets the preset conditions is determined from the candidate power.

[0011] Based on the fuel consumption and power generation time corresponding to the candidate power generation and the current speed difference of the engine, the target power generation of the engine under the current operating conditions is determined.

[0012] Secondly, embodiments of the present invention also provide an energy distribution device for a hybrid vehicle, comprising:

[0013] The variation curve determination module is used to determine the variation curve between the engine's power generation and fuel consumption power generation based on the universal characteristic curve of the engine in the engine range extender.

[0014] The demand power generation determination module is used to determine the vehicle's demand power generation under the current operating conditions based on the change curve between the power generation and fuel consumption power generation and the vehicle's demand power under the current operating conditions.

[0015] The candidate power generation determination module is used to discretize a preset power generation range based on a preset power interval, determine multiple candidate power generation, and determine the oil consumption power generation corresponding to each candidate power generation based on the change curve between the power generation and the oil consumption power generation.

[0016] The power generation time determination module is used to determine the power generation time corresponding to each candidate power generation power based on the battery charging and discharging efficiency, the vehicle's required power, the vehicle's required fuel consumption power generation, the fuel consumption power generation corresponding to each candidate power generation power and the required time.

[0017] The candidate power determination module is used to determine the candidate power that meets the preset conditions from the candidate power based on the vehicle's required power, the vehicle's required fuel consumption and power generation, the fuel consumption and power generation corresponding to each candidate power and the power generation time, and the required time.

[0018] The target power determination module is used to determine the target power of the engine under the current operating conditions based on the difference between the fuel consumption power generation and power generation time corresponding to the candidate power generation and the current speed of the engine.

[0019] Thirdly, embodiments of the present invention also provide an electronic device, characterized in that the electronic device comprises: at least one processor; and

[0020] A memory communicatively connected to the at least one processor; wherein,

[0021] The memory stores a computer program that can be executed by the at least one processor, which enables the at least one processor to perform the energy distribution method for hybrid vehicles provided in any embodiment of the present invention.

[0022] Fourthly, embodiments of the present invention also provide a computer-readable storage medium, characterized in that the computer-readable storage medium stores computer instructions, which are used to enable a processor to execute the energy distribution method for hybrid vehicles provided in any embodiment of the present invention.

[0023] The technical solution of this invention determines the curve of change between the engine's power generation and fuel consumption-generated power by using the universal characteristic curve of the engine in the engine range extender. This curve can then guide engine operation to achieve higher fuel efficiency and power generation efficiency. Based on the curve of change between the engine's power generation and fuel consumption-generated power, and the vehicle's power demand under current operating conditions, the required fuel consumption-generated power for the current operating conditions is determined, providing a basis for vehicle energy management. A preset power generation range is discretized based on preset power intervals to determine multiple candidate power generation powers. Based on the curve of change between the power generation and fuel consumption-generated power, the corresponding fuel consumption-generated power is determined for each candidate power generation power, facilitating better control of engine operation and achieving more efficient fuel utilization. Based on battery charging and discharging efficiency, the vehicle's power demand, the vehicle's required fuel consumption-generated power, the fuel consumption-generated power corresponding to each candidate power generation power, and the required time, the power generation time corresponding to each candidate power generation power is determined. This allows for the selection of appropriate candidate power generation power to adjust the engine's operating state according to actual needs, achieving flexible energy allocation between the hybrid vehicle's battery and engine. Based on the vehicle's required power, the vehicle's required fuel consumption and power generation, the fuel consumption and power generation time corresponding to each candidate power generation power, and the required time, candidate power generation power that meets preset conditions is determined from the candidate power generation power. Based on the fuel consumption and power generation time corresponding to the candidate power generation power and the current speed difference of the engine, the target power generation power of the engine under the current operating condition is determined from each candidate power generation power that meets the preset conditions. This enables flexible energy allocation of hybrid vehicles, improves energy utilization efficiency, and reduces energy waste.

[0024] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of the present invention, nor is it intended to limit the scope of the invention. Other features of the invention will become readily apparent from the following description. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1This is a flowchart of an energy distribution method for a hybrid vehicle according to Embodiment 1 of the present invention;

[0027] Figure 2 This is a schematic diagram of the universal characteristic curve of the engine according to Embodiment 1 of the present invention;

[0028] Figure 3 This is a schematic diagram of the variation curve between power generation and oil consumption power generation according to Embodiment 1 of the present invention;

[0029] Figure 4 This is a flowchart of an energy distribution method for a hybrid vehicle according to Embodiment 2 of the present invention;

[0030] Figure 5 This is a schematic diagram of the structure of an energy distribution device for a hybrid vehicle according to Embodiment 3 of the present invention;

[0031] Figure 6 This is a schematic diagram of the structure of an electronic device that implements the energy distribution method for hybrid vehicles according to embodiments of the present invention. Detailed Implementation

[0032] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0033] It should be noted that the terms "target," "current," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0034] Example 1

[0035] Figure 1 This is a flowchart illustrating an energy distribution method for a hybrid vehicle according to Embodiment 1 of the present invention. This embodiment is applicable to situations where energy utilization efficiency can be improved by rationally allocating the engine's power generation. Figure 1 As shown, this method can be executed by the energy distribution device of a hybrid vehicle, which can be implemented in hardware and / or software and can be configured in electronic devices. For example... Figure 1 As shown, the method specifically includes the following steps:

[0036] S110. Based on the universal characteristic curve of the engine in the engine range extender, determine the curve of the change between the engine's power generation and fuel consumption power generation.

[0037] Here, an engine range extender can refer to an electric vehicle component that provides additional electrical energy, thereby increasing the driving range of an electric vehicle. A universal characteristic curve can refer to a curve reflecting the torque and power output of an engine at different speeds. Fuel consumption power generation can refer to the amount of electricity generated by the engine per liter of gasoline consumed.

[0038] Specifically, the universal characteristic curve of the engine is as follows: Figure 2 As shown in the figure, the horizontal axis represents engine speed, the left vertical axis represents engine torque, and the right vertical axis represents the engine's power generation. Based on the torque and speed corresponding to different engine power generation capacities, the fuel consumption and power generation of the engine under different power generation capacities are calculated. The calculated fuel consumption and power generation under different power generation capacities are plotted as a curve, as shown below. Figure 3 As shown, this curve represents the relationship between the engine's power generation and the amount of electricity generated by fuel consumption. By understanding the engine's power generation and fuel consumption at different power output levels, we can better control the engine's operation to achieve more efficient fuel utilization, thereby improving the fuel economy of hybrid vehicles and reducing energy consumption.

[0039] For example, S110 may include: determining the coordinate points of torque and speed corresponding to different power generation of the engine based on the universal characteristic curve of the engine in the engine range extender; determining the engine fuel consumption power generation corresponding to each coordinate point based on the coordinate points of torque and speed; and determining the change curve between the engine power generation and fuel consumption power generation based on the engine fuel consumption power generation and the corresponding power generation.

[0040] Specifically, based on the engine's universal characteristic curve, the engine's torque and speed under different power generation conditions can be determined. These data can be represented as torque-speed coordinate points. Based on the engine's fuel consumption characteristics, the relationship between fuel consumption power generation and torque and speed is determined, thus obtaining the engine's fuel consumption power generation corresponding to each torque-speed coordinate point. Based on the correspondence between the torque-speed coordinate points and the engine's power generation, the engine's fuel consumption power generation and corresponding power generation are determined. Based on the engine's fuel consumption power generation and corresponding power generation, the curve of change between the engine's power generation and fuel consumption power generation is determined. This helps to better understand engine performance and better control the vehicle's driving state, thereby achieving higher power generation and lower fuel consumption.

[0041] S120. Based on the curve of change between power generation and fuel consumption power generation and the vehicle's power demand under the current operating conditions, determine the vehicle's fuel consumption power demand under the current operating conditions.

[0042] Here, "current operating condition" refers to the vehicle's operating status and performance under current road conditions and driving environment. For example, current operating condition could include parameters such as vehicle speed, acceleration, engine speed, and vehicle load. "Vehicle power demand" refers to the power required by the vehicle under current driving conditions. "Vehicle fuel consumption and power generation" refers to the amount of electricity generated by the engine per liter of fuel consumed under the vehicle's power demand.

[0043] Specifically, based on the curves showing the relationship between power generation and fuel consumption, the vehicle's power demand under the current operating conditions is compared with the curves showing the relationship between power generation and fuel consumption. This allows for the determination of the vehicle's required fuel consumption in the curves showing the relationship between power generation and fuel consumption, thus facilitating the optimization of engine emissions performance and improving fuel economy based on the vehicle's required power and fuel consumption.

[0044] S130. Discretize the preset power generation range based on the preset power interval to determine multiple candidate power generation powers, and determine the oil consumption and power generation corresponding to each candidate power generation power based on the change curve between power generation and fuel consumption and power generation.

[0045] The preset power interval can refer to the pre-set interval length for power sampling. The preset power generation range can refer to the power range corresponding to the range extender's power generation. For example, if the maximum power generation of the range extender is pmax, then 0-pmax is the preset power generation range. The candidate power generation can refer to the power generation obtained by discretely sampling the preset power generation range according to the preset power interval. The fuel consumption power generation corresponding to the candidate power generation can refer to the engine's power generation per liter of fuel consumption corresponding to the candidate power generation.

[0046] Specifically, a preset power generation range is discretely sampled based on a preset power interval, and the sampled power generation outputs are determined as candidate power generation outputs. Based on the curve showing the relationship between power generation and fuel consumption / power generation, the corresponding fuel consumption / power generation output for each candidate power generation output in the curve is determined. This reduces computational load and improves computational efficiency. After discretization, appropriate candidate power generation outputs can be selected for optimization based on actual needs, thereby improving engine fuel economy.

[0047] S140. Based on the battery charging and discharging efficiency, vehicle power demand, vehicle fuel consumption power generation demand, fuel consumption power generation corresponding to each candidate power and the demand time, determine the power generation time corresponding to each candidate power.

[0048] Battery charge / discharge efficiency can refer to both charging efficiency and discharging efficiency. Charging efficiency is the ratio of the electrical energy stored in the battery to the input electrical energy during charging. Discharging efficiency is the ratio of the electrical energy output by the battery to the stored electrical energy during discharging. For example, a battery might have a charging efficiency and a discharging efficiency of 95%. Demand time can refer to a unit of time. The generation time corresponding to the selected power output can be the time required for the selected power output to produce the same amount of energy as the vehicle's required power output within the demand time.

[0049] Specifically, the power generation time corresponding to the selected power generation capacity is an unknown quantity. Based on the vehicle's required power and each selected power generation capacity, the input power to the battery for each selected power generation capacity within its corresponding power generation time is determined. The battery's output power is determined based on the relationship between battery charging / discharging efficiency and the battery's input power. The battery's output power needs to meet the energy required during the difference between the vehicle's required power and the power generation time corresponding to each selected power generation capacity. Since the battery's output power and the energy required during the difference between the vehicle's required power and the power generation time corresponding to each selected power generation capacity are the same, a relationship is established where the only unknown quantity is the power generation time corresponding to the selected power generation capacity. Based on this relationship, the power generation time corresponding to each selected power generation capacity is calculated. This allows for the selection of appropriate selected power generation capacity to adjust the engine's operating state and the battery's output power according to actual needs, achieving flexible energy allocation between the hybrid vehicle's battery and engine. This results in better power generation and lower fuel consumption, contributing to improved vehicle performance and fuel economy.

[0050] For example, S140 may include: for each candidate power generation, determining the battery charging power corresponding to the candidate power generation and the vehicle's required power; determining the battery output power based on the battery charging and discharging efficiency; determining the vehicle's required energy based on the vehicle's required power and required time; and determining the power generation time corresponding to the candidate power generation based on the vehicle's required energy, the battery's output power, and the vehicle's required power.

[0051] Specifically, for each candidate power generation capacity, based on the candidate power generation capacity and the vehicle's required power, the difference between each candidate power generation capacity and the vehicle's required power is determined as the battery charging power corresponding to each candidate power generation capacity. The battery charging power is multiplied by the battery charging and discharging efficiency, and the product is determined as the battery's output power. The vehicle's required energy is determined based on the product of the vehicle's required power and the required time. The difference between the vehicle's required energy and the energy required by the vehicle during the power generation time corresponding to the candidate power generation capacity is the battery's output capacity. Based on the above relationships, a relational formula is established between the vehicle's required energy, the battery's output power, the vehicle's required power, and the power generation time corresponding to the candidate power generation capacity. Based on this formula, the power generation time corresponding to each candidate power generation capacity is determined, thus facilitating the selection of an appropriate candidate power generation capacity to adjust the engine's operating state according to actual needs.

[0052] For example, the battery's charging and discharging efficiency is 95%, the vehicle's required power is Pl, the required time is t, the selected power generation is Py, and the power generation time corresponding to the selected power generation is t1. Then the battery's charging power is Py-Pl, the battery's output power is (Py-Pl)×0.95×0.95, the battery's output capacity is (Py-Pl)×0.95×0.95×t1, and the difference between the vehicle's required energy and the energy required by the vehicle during the power generation time corresponding to the selected power generation is Pl×(t-t1). Therefore, the relationship between the vehicle's required power, the selected power generation, the required time, and the power generation time corresponding to the selected power generation is: (Py-Pl)×0.95×0.95×t1=Pl×(t-t1). Based on this relationship, the power generation time corresponding to each selected power generation can be calculated.

[0053] For example, determining the power generation time corresponding to the selected power generation power based on the vehicle's energy demand, the battery's output power, and the vehicle's power demand includes: adding the battery's output power and the vehicle's power demand to obtain the vehicle's actual output power under the selected power generation power; and determining the power generation time corresponding to the selected power generation power based on the vehicle's actual output power and the vehicle's energy demand.

[0054] The actual output power can refer to the sum of the battery's output power and the vehicle's required power.

[0055] Specifically, the sum of the battery's output power and the vehicle's required power is taken as the vehicle's actual output power under the selected power generation capacity. Correspondingly, the actual output power needs to satisfy the requirement that the energy output within the power generation time corresponding to the selected power generation capacity is equal to the vehicle's required energy. Based on this, a relationship is established between the vehicle's required energy, the battery's output power, and the power generation time corresponding to the selected power generation capacity, and the power generation time corresponding to the selected power generation capacity is determined based on this relationship.

[0056] For example, the battery's charging and discharging efficiency is 95%, the vehicle's required power is Pl, the required time is t, the selected power generation is Py, and the power generation time corresponding to the selected power generation is t1. Then the battery's charging power is Py-Pl, the battery's output power is (Py-Pl)×0.95×0.95, the vehicle's actual output power under the selected power generation is (Py-Pl)×0.95×0.95+Pl, and the vehicle's required energy is Pl×t. Therefore, the relationship between the vehicle's required energy, the battery's output power, and the power generation time corresponding to the selected power generation is: [(Py-Pl)×0.95×0.95+Pl]×t1=Pl×t. Based on this relationship, the power generation time corresponding to each selected power generation can be calculated.

[0057] S150. Based on the vehicle's required power, the vehicle's required fuel consumption and power generation, the fuel consumption and power generation corresponding to each candidate power and the power generation time, and the required time, determine the candidate power that meets the preset conditions from the candidate power.

[0058] The preset conditions can refer to the conditions used to determine whether the selected power generation capacity represents the optimal power generation efficiency under the current operating conditions. The candidate power generation capacity can refer to the selected power generation capacity that meets the preset conditions.

[0059] Specifically, based on the vehicle's required power and required fuel consumption for power generation, the fuel consumption within the required time period is determined. Based on the fuel consumption, power generation, and power generation time corresponding to each candidate power generation capacity, the fuel consumption within the corresponding power generation time for each candidate power generation capacity is determined. Based on the fuel consumption within the required time period and the fuel consumption within the corresponding power generation time for each candidate power generation capacity, candidate power generation capacities that meet preset conditions are determined from the candidate power generation capacities. This initial screening of candidate power generation capacities facilitates the rapid selection of suitable candidate power generation capacities based on actual needs to adjust the engine's operating state, achieving optimal power generation and lower fuel consumption for power generation.

[0060] S160. Based on the fuel consumption and power generation time corresponding to the candidate power generation and the current speed difference of the engine, determine the target power generation of the engine under the current operating conditions.

[0061] The current speed difference can refer to the difference between the engine's current speed and its speed at the previous moment. The target power generation can refer to the engine's actual power generation under the current operating conditions.

[0062] Specifically, based on the difference between the fuel consumption, power generation, and power generation time corresponding to the candidate power generation and the current engine speed, a penalty function is established to determine the penalty function value corresponding to each candidate power generation. Based on the penalty function value corresponding to each candidate power generation, the target power generation of the engine under the current operating condition is determined, thereby obtaining the optimal power generation of the engine under the current operating condition and improving vehicle performance and fuel economy.

[0063] For example, S160 may include: determining a penalty energy value corresponding to each candidate power generation based on the difference between the candidate power generation corresponding to the candidate fuel consumption power generation, the power generation time corresponding to the candidate power generation, and the current speed of the engine; comparing the penalty energy values ​​corresponding to each candidate power generation, and determining the target power generation of the engine under the current operating condition based on the comparison results.

[0064] The penalty energy value can refer to the function value of the penalty function corresponding to the candidate power generation.

[0065] Specifically, based on the difference between the fuel consumption and power generation time corresponding to the candidate power generation and the current engine speed, a penalty function is established to determine the penalty energy value corresponding to each candidate power generation. The penalty energy values ​​corresponding to each candidate power generation are compared, and based on the comparison results, the candidate power generation corresponding to the minimum penalty energy value is determined as the target power generation of the engine under the current operating condition, thereby obtaining the optimal power generation of the engine under the current operating condition.

[0066] The technical solution of this invention determines the relationship between the engine's power generation and fuel consumption-to-power generation by using the universal characteristic curve of the engine in the engine range extender. This curve guides engine operation, achieving higher fuel efficiency and power generation efficiency. Based on the relationship between the engine's power generation and fuel consumption-to-power generation, and the vehicle's power demand under current operating conditions, the required fuel consumption-to-power generation for the current operating conditions is determined, providing a basis for vehicle energy management. A preset power generation range is discretized based on preset power intervals to determine multiple candidate power generation powers. Based on the relationship between power generation and fuel consumption-to-power generation, the corresponding fuel consumption-to-power generation for each candidate power generation power is determined, facilitating better control of engine operation and achieving more efficient fuel utilization. Based on battery charging and discharging efficiency, vehicle power demand, vehicle required fuel consumption-to-power generation, the fuel consumption-to-power generation for each candidate power generation power, and the required time, the power generation time corresponding to each candidate power generation power is determined. This allows for the selection of appropriate candidate power generation powers to adjust the engine's operating state according to actual needs, achieving flexible energy allocation between the hybrid vehicle's battery and engine. Based on the vehicle's required power, the vehicle's required fuel consumption and power generation, the fuel consumption and power generation corresponding to each candidate power generation power and the required time, candidate power generation power that meets preset conditions is determined from the candidate power generation power. Based on the fuel consumption and power generation corresponding to the candidate power generation power and the current speed difference of the engine, the target power generation power of the engine under the current operating condition is determined from each candidate power generation power that meets the preset conditions. This enables flexible energy allocation of hybrid vehicles, improves energy utilization efficiency, and reduces energy waste.

[0067] Example 2

[0068] Figure 4 This is a flowchart of an energy distribution method for a hybrid vehicle provided in Embodiment 2 of the present invention. Based on the above embodiments, this embodiment optimizes the step of "determining candidate power generation power that meets preset conditions from the candidate power generation power based on the vehicle's required power, the vehicle's required fuel consumption and power generation, the fuel consumption and power generation time corresponding to each candidate power generation power, and the required time." Explanations of terms that are the same as or corresponding to those in the above embodiments are not repeated here.

[0069] See Figure 4 The energy distribution method for hybrid vehicles provided in this embodiment specifically includes the following steps:

[0070] S201. Based on the universal characteristic curve of the engine in the engine range extender, determine the curve of the change between the engine's power generation and fuel consumption power generation.

[0071] S202. Based on the curve of change between power generation and fuel consumption power generation and the vehicle's power demand under the current operating conditions, determine the vehicle's fuel consumption power demand under the current operating conditions.

[0072] S203. Discretize the preset power generation range based on the preset power interval to determine multiple candidate power generation powers, and determine the oil consumption and power generation corresponding to each candidate power generation power based on the change curve between power generation and fuel consumption and power generation.

[0073] S204. Based on the battery charging and discharging efficiency, vehicle power demand, vehicle fuel consumption power generation demand, fuel consumption power generation corresponding to each candidate power and the demand time, determine the power generation time corresponding to each candidate power.

[0074] Specifically, the power generation time corresponding to the selected power generation capacity is an unknown quantity. Based on the vehicle's required power and each selected power generation capacity, the input power to the battery for each selected power generation capacity within its corresponding power generation time is determined. The battery's output power is determined based on the relationship between battery charging / discharging efficiency and the battery's input power. The battery's output power needs to meet the energy required during the difference between the vehicle's required power and the power generation time corresponding to each selected power generation capacity. Since the battery's output power and the energy required during the difference between the vehicle's required power and the power generation time corresponding to each selected power generation capacity are the same, a relationship is established where the only unknown quantity is the power generation time corresponding to the selected power generation capacity. Based on this relationship, the power generation time corresponding to each selected power generation capacity is calculated. This allows for the selection of an appropriate selected power generation capacity to adjust the engine's operating state according to actual needs, achieving optimal power generation and lower fuel consumption, thus improving vehicle performance and fuel economy.

[0075] S205. Based on the candidate power generation, the candidate fuel consumption power generation and the corresponding power generation time, determine the first fuel consumption of the candidate power generation within the corresponding power generation time.

[0076] The first fuel consumption can refer to the fuel consumption of the selected power generation capacity during the corresponding power generation time.

[0077] Specifically, based on the selected power generation capacity and the corresponding power generation time, the total power generation capacity of the selected power generation capacity within the corresponding power generation time is determined. Based on the total power generation capacity of the selected power generation capacity within the corresponding power generation time and the selected fuel consumption power generation capacity, the first fuel consumption of the selected power generation capacity within the corresponding power generation time is determined. This facilitates the selection of an appropriate engine power generation capacity based on the fuel consumption of the selected power generation capacity within the corresponding power generation time, thereby improving vehicle performance and fuel economy.

[0078] For example, the selected power generation capacity can be Py, the power generation time corresponding to the selected power generation capacity is t1, and the selected fuel consumption power generation is zy. Then the first fuel consumption of the selected power generation capacity within the corresponding power generation time is: (Py×t1) / zy.

[0079] S206. Based on the vehicle's required power, the vehicle's required fuel consumption and power generation, and the required time, determine the second fuel consumption of the vehicle's required power within the required time.

[0080] The second fuel consumption can refer to the fuel consumption of the vehicle within the required power time.

[0081] Specifically, based on the vehicle's required power and required time, the total energy demand for the vehicle's required power within the corresponding required time is determined. Based on the total energy demand for the vehicle's required power within the required time and the vehicle's required fuel consumption for power generation, the second fuel consumption for the vehicle's required power within the required time is determined. This facilitates the selection of appropriate candidate power generation capacity based on the second fuel consumption to improve vehicle performance and fuel economy.

[0082] For example, if the vehicle's required power is Pl, the required time is t, and the vehicle's required fuel consumption and power generation is zl, then the first fuel consumption of the selected power generation within the corresponding power generation time is: (Pl×t) / zl.

[0083] S207. Based on the first fuel consumption and the second fuel consumption, determine the first power generation power that meets the preset conditions from the candidate power generation power.

[0084] Specifically, the first fuel consumption and the second fuel consumption corresponding to each candidate power generation are compared. Based on the comparison results, the candidate power generation corresponding to the first fuel consumption being less than the second fuel consumption is determined as the first power generation. In this way, a suitable first power generation can be selected as the engine power generation, thereby improving the vehicle's fuel economy.

[0085] S208. Based on the first fuel consumption, the second fuel consumption, and the demand time, determine the target power generation time range.

[0086] The target power generation time range can refer to the time range that the power generation time corresponding to the selected power generation capacity needs to meet.

[0087] Specifically, based on the first fuel consumption, the second fuel consumption, and the demand time, the lower limit of the target power generation time range is determined. Based on the demand time, the upper limit of the target power generation time range is determined. Based on the upper and lower limits of the target power generation time range, the time interval enclosed by the upper and lower limits of the target power generation time range is defined as the target power generation time range.

[0088] Exemplarily, S208 may include: based on the first fuel consumption and the second fuel consumption, determining the time range where the power generation time corresponding to the candidate power generation power that satisfies the condition that the first fuel consumption is less than the second fuel consumption is located as a first time range; based on the required time, determining the time range corresponding to the power generation time of the candidate power generation power being less than the required time as a second time range; and determining a target time range based on the first time range and the second time range.

[0089] Herein, the first time range may refer to the time range where the power generation time corresponding to the candidate power generation power that satisfies the condition that the first fuel consumption is less than the second fuel consumption is located. The second time range may refer to the time range corresponding to the power generation time of the candidate power generation power being less than the required time.

[0090] Specifically, the first fuel consumption and the second fuel consumption are compared, and the time range where the power generation time corresponding to the candidate power generation power that satisfies the condition that the first fuel consumption is less than the second fuel consumption is located is determined as the first time range. The time range corresponding to the power generation time of the candidate power generation power being less than the required time is determined as the second time range. The time intervals corresponding to the first time range and the second time range are combined to obtain the target time range.

[0091] Exemplarily, the charging and discharging efficiency of the battery is both 95%, the vehicle required power is Pl, the required time is t, the candidate power generation power is Py, and the power generation time corresponding to the candidate power generation power is set as t1. Then the charging power of the battery is Py-Pl, the output power of the battery is (Py-Pl)×0.95×0.95, the output electric quantity of the battery is (Py-Pl)×0.95×0.95×t1, and the difference between the vehicle required energy and the required energy of the vehicle within the power generation time corresponding to the candidate power generation power is Pl×(t-t1), so that it can be obtained: (Py-Pl)×0.95×0.95×t1=Pl×(t-t1), and further, Py×t1=P1×(t-0.0975×t1) / 0.9025 can be obtained. Substituting the above formula into the first fuel consumption, since the first fuel consumption needs to be less than the second fuel consumption, the first time range can be further obtained as: t×(1-0.9025×zy×z1) / 0.0975<t1. The power generation time corresponding to the candidate power generation power needs to be less than the required time, so the second time range is: t1<t. Finally, the first time range and the second time range are combined to obtain the target time range,

[0092] t×(1-0.9025×zy×z1) / 0.0975<t1t1<t.

[0093] S209: Based on the power generation time corresponding to the first power generation power and the required time, a candidate power generation power that satisfies the target power generation time range is determined from the first power generation power.

[0094] Specifically, the first power generation power whose power generation time falls within the target time range is determined from the first power generation power. The first power generation power whose power generation time falls within the target time range is determined as the candidate power generation power, thereby determining the engine power generation power with short power generation time and low fuel consumption, further narrowing the selection range of engine power generation power, reducing vehicle operating costs, and enabling the vehicle to generate greater power in a short time, so that the vehicle can obtain better acceleration performance and power response.

[0095] S210. Based on the fuel consumption and power generation time corresponding to the candidate power generation and the current speed difference of the engine, determine the target power generation of the engine under the current operating conditions.

[0096] The technical solution of this invention determines a first fuel consumption of the candidate power generation within a corresponding power generation time by considering the candidate power generation, the candidate fuel consumption power generation, and the corresponding power generation time. Then, based on the vehicle's required power, the vehicle's required fuel consumption power generation, and the required time, a second fuel consumption of the vehicle's required power within a required time is determined. Based on the first and second fuel consumptions, a first power generation that meets preset conditions is selected from the candidate power generation, thereby obtaining a generator power generation with lower fuel consumption. A target power generation time range is determined based on the first fuel consumption, the second fuel consumption, and the required time. Based on the power generation time and required time corresponding to the first power generation, candidate power generation that meets the target power generation time range is selected from the first power generation, thereby further narrowing the selection range of engine power generation, reducing vehicle operating costs, and enabling the vehicle to generate greater power in a short time, resulting in better acceleration performance and power response. This further realizes flexible energy allocation in hybrid vehicles, improves energy utilization efficiency, and reduces energy waste.

[0097] Example 3

[0098] Figure 5 This is a schematic diagram of the structure of an energy distribution device for a hybrid vehicle provided in Embodiment 3 of the present invention. Figure 5 As shown, the device includes: a change curve determination module 310, a demand power generation determination module 320, a candidate power generation determination module 330, a power generation time determination module 340, a candidate power determination module 350, and a target power determination module 360.

[0099] Among them, the variation curve determination module 310 is used to determine the variation curve between the engine's power generation and fuel consumption power generation based on the universal characteristic curve of the engine in the engine range extender.

[0100] The demand power generation determination module 320 is used to determine the vehicle demand power generation under the current operating conditions based on the change curve between the power generation and the fuel consumption power generation and the vehicle demand power under the current operating conditions.

[0101] The candidate power generation determination module 330 is used to discretize a preset power generation range based on a preset power interval, determine multiple candidate power generation, and determine the oil consumption power generation corresponding to each candidate power generation based on the change curve between the power generation and the oil consumption power generation.

[0102] The power generation time determination module 340 is used to determine the power generation time corresponding to each candidate power generation power based on the battery charging and discharging efficiency, the vehicle's required power, the vehicle's required fuel consumption power generation, the fuel consumption power generation corresponding to each candidate power generation power and the required time.

[0103] The candidate power determination module 350 is used to determine the candidate power that meets the preset conditions from the candidate power based on the vehicle's required power, the vehicle's required fuel consumption and power generation, the fuel consumption and power generation corresponding to each candidate power and the power generation time, and the required time.

[0104] The target power determination module 360 ​​is used to determine the target power of the engine under the current operating conditions based on the difference between the fuel consumption power generation and power generation time corresponding to the candidate power generation and the current speed of the engine.

[0105] The technical solution of this embodiment determines the curve of change between the engine's power generation and fuel consumption-generated power by using the universal characteristic curve of the engine in the engine range extender. This curve can then guide engine operation to achieve higher fuel efficiency and power generation efficiency. Based on the curve of change between the engine's power generation and fuel consumption-generated power, and the vehicle's power demand under the current operating conditions, the required fuel consumption-generated power for the current operating conditions is determined, providing a basis for vehicle energy management. A preset power generation range is discretized based on a preset power interval to determine multiple candidate power generation powers. Based on the curve of change between the power generation and fuel consumption-generated power, the corresponding fuel consumption-generated power is determined for each candidate power generation power. Based on the battery charging and discharging efficiency, the vehicle's power demand, the vehicle's required fuel consumption-generated power, the fuel consumption-generated power corresponding to each candidate power generation power, and the required time, the generation time corresponding to each candidate power generation power is determined. Based on the vehicle's power demand, the vehicle's required fuel consumption-generated power, the fuel consumption-generated power corresponding to each candidate power generation power, the generation time, and the required time, candidate power generation powers that meet preset conditions are determined from the candidate power generation powers. Based on the difference between the fuel consumption and power generation and the power generation time corresponding to the candidate power generation and the current speed of the engine, the target power generation of the engine under the current operating condition is determined from each candidate power generation that meets the preset conditions, thereby realizing the flexible allocation of energy in hybrid vehicles, improving energy utilization efficiency, and reducing energy waste.

[0106] Optionally, the variation curve determination module 310 is specifically used for: determining the coordinate points of torque and speed corresponding to different power generation of the engine based on the universal characteristic curve of the engine in the engine range extender; determining the engine fuel consumption power generation corresponding to each coordinate point based on the coordinate points of torque and speed; and determining the variation curve between the engine power generation and fuel consumption power generation based on the engine fuel consumption power generation and the corresponding power generation.

[0107] Optionally, the power generation time determination module 340 includes:

[0108] The charging power determination unit is used to determine the battery charging power corresponding to each candidate power generation power based on the candidate power generation power and the vehicle's required power.

[0109] A battery output power determination unit is used to determine the battery output power based on the battery charge and discharge efficiency;

[0110] The vehicle energy demand determination unit is used to determine the vehicle's energy demand based on the vehicle's power demand and demand time.

[0111] The power generation time determination unit is used to determine the power generation time corresponding to the selected power generation power based on the vehicle's energy demand, the battery's output power, and the vehicle's power demand.

[0112] Optionally, the power generation time determination unit is specifically used to: add the output power of the battery and the power demand of the vehicle to obtain the actual output power of the vehicle under the selected power generation power; and determine the power generation time corresponding to the selected power generation power based on the actual output power of the vehicle and the energy demand of the vehicle.

[0113] Optionally, the candidate power determination module 350 includes:

[0114] The first fuel consumption determination unit is used to determine the first fuel consumption of the selected power generation power within the corresponding power generation time based on the selected power generation power, the selected fuel consumption power generation and the corresponding power generation time.

[0115] The second fuel consumption determination unit is used to determine the second fuel consumption of the vehicle's required power within the required time period based on the vehicle's required power, the vehicle's required fuel consumption power generation, and the required time.

[0116] The first power generation determination unit is used to determine a first power generation power that meets preset conditions from the candidate power generation power based on the first fuel consumption and the second fuel consumption.

[0117] The target time range determination unit is used to determine the target power generation time range based on the first fuel consumption, the second fuel consumption, and the demand time.

[0118] The candidate power generation determination unit is used to determine, based on the power generation time and demand time corresponding to the first power generation, a candidate power generation that meets the target power generation time range from the first power generation.

[0119] Optionally, the target time range determination unit is specifically used to: determine the time range in which the power generation time corresponding to the candidate power generation power that satisfies the first fuel consumption and the second fuel consumption is located as the first time range; determine the time range in which the power generation time corresponding to the candidate power generation power is less than the demand time as the second time range based on the demand time; and determine the target time range based on the first time range and the second time range.

[0120] Optionally, the target power determination module 360 ​​is specifically used to: determine the penalty energy value corresponding to each candidate power generation based on the candidate fuel consumption power generation corresponding to the candidate power generation, the power generation time corresponding to the candidate power generation, and the current speed difference of the engine; compare the penalty energy values ​​corresponding to each candidate power generation, and determine the target power generation of the engine under the current operating condition based on the comparison results.

[0121] The energy distribution device for hybrid vehicles provided in this embodiment of the invention can execute the energy distribution method for hybrid vehicles provided in any embodiment of the invention, and has the corresponding functional modules and beneficial effects of executing the method.

[0122] Figure 6 A schematic diagram of an electronic device 12 that can be used to implement embodiments of the present invention is shown. The electronic device is intended to represent various forms of digital computers, such as desktop computers, workbenches, servers, mainframe computers, and other suitable computers. The electronic device can also represent various forms of mobile devices, such as personal digital processors, smartphones, wearable devices (e.g., helmets, glasses, watches, etc.), and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely illustrative and are not intended to limit the implementation of the invention described and / or claimed herein.

[0123] like Figure 6 As shown, the electronic device 12 is represented in the form of a general-purpose computing device. The components of the electronic device 12 may include, but are not limited to: one or more processors or processing units 16, system memory 28, and bus 18 connecting different system components (including system memory 28 and processing unit 16).

[0124] Bus 18 represents one or more of several bus architectures, including a memory bus or memory controller, a peripheral bus, a graphics acceleration port, a processor, or a local bus using any of the various bus architectures. For example, these architectures include, but are not limited to, the Industry Standard Architecture (ISA) bus, the Micro Channel Architecture (MAC) bus, the Enhanced ISA bus, the Video Electronics Standards Association (VESA) local bus, and the Peripheral Component Interconnect (PCI) bus.

[0125] Electronic device 12 typically includes a variety of computer system readable media. These media can be any available media that can be accessed by electronic device 12, including volatile and non-volatile media, removable and non-removable media.

[0126] System memory 28 may include computer system readable media in the form of volatile memory, such as random access memory (RAM) 30 and / or cache memory 32. Electronic device 12 may further include other removable / non-removable, volatile / non-volatile computer system storage media. By way of example only, storage system 34 may be used to read and write non-removable, non-volatile magnetic media (… Figure 6 Not shown; usually referred to as a "hard drive"). Although Figure 6 Not shown, a disk drive for reading and writing to a removable non-volatile disk (e.g., a "floppy disk") and an optical disk drive for reading and writing to a removable non-volatile optical disk (e.g., a CD-ROM, DVD-ROM, or other optical media) may be provided. In these cases, each drive may be connected to bus 18 via one or more data media interfaces. System memory 28 may include at least one program product having a set (e.g., at least one) of program modules configured to perform the functions of the embodiments of the present invention.

[0127] A program / utility 40 having a set (at least one) of program modules 42 may be stored, for example, in system memory 28. Such program modules 42 include, but are not limited to, an operating system, one or more application programs, other program modules, and program data. Each or some combination of these examples may include an implementation of a network environment. Program modules 42 typically perform the functions and / or methods described in the embodiments of the present invention.

[0128] Electronic device 12 can also communicate with one or more external devices 14 (e.g., keyboard, pointing device, display 24, etc.), and with one or more devices that enable a user to interact with electronic device 12, and / or with any device that enables electronic device 12 to communicate with one or more other computing devices (e.g., network card, modem, etc.). This communication can be performed via input / output (I / O) interface 22. Furthermore, electronic device 12 can also communicate with one or more networks (e.g., local area network (LAN), wide area network (WAN), and / or public networks, such as the Internet) via network adapter 20. As shown, network adapter 20 communicates with other modules of electronic device 12 via bus 18. It should be understood that, although not shown in the figures, other hardware and / or software modules can be used in conjunction with electronic device 12, including but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, and data backup storage systems.

[0129] Processing unit 16 executes various functional applications and data processing by running programs stored in system memory 28, such as implementing the steps of an energy distribution method for a hybrid vehicle provided in this embodiment, the method including:

[0130] Based on the universal characteristic curve of the engine in the engine range extender, the curve of the change between the engine's power generation and fuel consumption power generation is determined.

[0131] Based on the curve showing the change between power generation and fuel consumption power generation and the vehicle's power demand under the current operating conditions, the vehicle's required fuel consumption power generation under the current operating conditions is determined.

[0132] The preset power generation range is discretized based on the preset power interval to determine multiple candidate power generation powers. Based on the change curve between the power generation power and the fuel consumption power generation, the fuel consumption power generation corresponding to each candidate power generation power is determined.

[0133] Based on the battery charging and discharging efficiency, the vehicle's required power, the vehicle's required fuel consumption and power generation, the fuel consumption and power generation corresponding to each candidate power and the required time, the power generation time corresponding to each candidate power is determined.

[0134] Based on the vehicle's required power, the vehicle's required fuel consumption and power generation, the fuel consumption and power generation corresponding to each candidate power and the power generation time, and the required time, candidate power that meets the preset conditions is determined from the candidate power.

[0135] Based on the fuel consumption and power generation time corresponding to the candidate power generation and the current speed difference of the engine, the target power generation of the engine under the current operating conditions is determined.

[0136] This embodiment provides a computer-readable storage medium storing a computer program thereon. When executed by a processor, the program implements the steps of the energy distribution method for hybrid vehicles provided in any embodiment of the present invention. The method includes:

[0137] Based on the universal characteristic curve of the engine in the engine range extender, the curve of the change between the engine's power generation and fuel consumption power generation is determined.

[0138] Based on the curve showing the change between power generation and fuel consumption power generation and the vehicle's power demand under the current operating conditions, the vehicle's required fuel consumption power generation under the current operating conditions is determined.

[0139] The preset power generation range is discretized based on the preset power interval to determine multiple candidate power generation powers. Based on the change curve between the power generation power and the fuel consumption power generation, the fuel consumption power generation corresponding to each candidate power generation power is determined.

[0140] Based on the battery charging and discharging efficiency, the vehicle's required power, the vehicle's required fuel consumption and power generation, the fuel consumption and power generation corresponding to each candidate power and the required time, the power generation time corresponding to each candidate power is determined.

[0141] Based on the vehicle's required power, the vehicle's required fuel consumption and power generation, the fuel consumption and power generation corresponding to each candidate power and the power generation time, and the required time, candidate power that meets the preset conditions is determined from the candidate power.

[0142] Based on the fuel consumption and power generation time corresponding to the candidate power generation and the current speed difference of the engine, the target power generation of the engine under the current operating conditions is determined.

[0143] The computer storage medium of this invention can be any combination of one or more computer-readable media. A computer-readable medium can be a computer-readable signal medium or a computer-readable storage medium. For example, a computer-readable storage medium can be, but is not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination thereof. More specific examples (a non-exhaustive list) of computer-readable storage media 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, a computer-readable storage medium can be any tangible medium that contains or stores a program that can be used by or in conjunction with an instruction execution system, apparatus, or device.

[0144] 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.

[0145] 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, etc., or any suitable combination thereof.

[0146] Computer program code for performing the operations of this invention can be written in one or more programming languages ​​or a combination thereof, including 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 it can be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0147] Those skilled in the art will understand that the modules or steps of the present invention described above can be implemented using general-purpose computing devices. They can be centralized on a single computing device or distributed across a network of multiple computing devices. Optionally, they can be implemented using computer-executable program code, thereby allowing them to be stored in a storage device for execution by a computing device, or they can be fabricated as separate integrated circuit modules, or multiple modules or steps can be fabricated as a single integrated circuit module. Thus, the present invention is not limited to any particular combination of hardware and software.

[0148] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention, the scope of which is determined by the scope of the appended claims.

Claims

1. An energy distribution method for a hybrid vehicle, characterized in that, include: Based on the universal characteristic curve of the engine in the engine range extender, the curve of the change between the engine's power generation and fuel consumption power generation is determined. Based on the curve showing the change between the power generation and the fuel consumption power generation and the vehicle's power demand under the current operating conditions, the vehicle's required fuel consumption power generation under the current operating conditions is determined. The preset power generation range is discretized based on the preset power interval to determine multiple candidate power generation powers. Based on the change curve between the power generation power and the fuel consumption power generation, the fuel consumption power generation corresponding to each candidate power generation power is determined. Based on the battery charging and discharging efficiency, the vehicle's required power, the vehicle's required fuel consumption and power generation, the fuel consumption and power generation corresponding to each candidate power and the required time, the power generation time corresponding to each candidate power is determined. Based on the vehicle's required power, the vehicle's required fuel consumption and power generation, the fuel consumption and power generation corresponding to each candidate power and the power generation time, and the required time, candidate power that meets the preset conditions is determined from the candidate power. Based on the fuel consumption and power generation time corresponding to the candidate power generation and the current speed difference of the engine, the target power generation of the engine under the current operating condition is determined. The process of determining candidate power generation powers that meet preset conditions from the candidate power generation powers based on the vehicle's required power, the vehicle's required fuel consumption and power generation, the fuel consumption and power generation time corresponding to each candidate power generation power, and the required time includes: Based on the candidate power generation capacity, the fuel consumption power generation and the corresponding power generation time, determine the first fuel consumption of the candidate power generation capacity within the corresponding power generation time. Based on the vehicle's required power, the vehicle's required fuel consumption and power generation, and the required time, determine the second fuel consumption of the vehicle's required power within the required time. Based on the first fuel consumption and the second fuel consumption, a first power generation power that meets the preset conditions is determined from the candidate power generation power; Based on the first fuel consumption, the second fuel consumption, and the demand time, the target power generation time range is determined; Based on the power generation time and demand time corresponding to the first power generation, candidate power generation that meets the target power generation time range is determined from the first power generation. The determination of the target time range based on the first fuel consumption, the second fuel consumption, and the required time includes: Based on the first fuel consumption and the second fuel consumption, the time range in which the power generation time of the candidate power generation power that satisfies the first fuel consumption being less than the second fuel consumption is determined as the first time range. Based on the demand time, the time range in which the power generation time corresponding to the candidate power generation capacity is less than the demand time is determined as the second time range. Based on the first time range and the second time range, a target time range is determined.

2. The method according to claim 1, characterized in that, The determination of the relationship between the engine's power generation and fuel consumption-to-power generation curve based on the universal characteristic curve of the engine in the range extender includes: Based on the universal characteristic curve of the engine in the engine range extender, determine the coordinate points of torque and speed corresponding to different power generation of the engine. Based on the coordinate points of the torque and speed, determine the engine fuel consumption and power generation corresponding to each coordinate point; Based on the engine's fuel consumption and power generation and the corresponding power generation, a curve showing the change between the engine's power generation and fuel consumption and power generation is determined.

3. The method according to claim 1, characterized in that, The determination of the power generation time corresponding to each candidate power generation capacity based on battery charging and discharging efficiency, vehicle power demand, vehicle fuel consumption and power generation demand, fuel consumption and power generation corresponding to each candidate power generation capacity, and demand time includes: For each candidate power generation capacity, the corresponding battery charging power is determined based on the candidate power generation capacity and the vehicle's required power. The battery output power is determined based on the battery charge and discharge efficiency. The vehicle's energy requirement is determined based on the vehicle's power demand and time demand. Based on the vehicle's energy demand, the battery's output power, and the vehicle's power demand, the corresponding power generation time for the selected power generation capacity is determined.

4. The method according to claim 3, characterized in that, The process of determining the power generation time corresponding to the selected power generation capacity based on the vehicle's energy demand, the battery's output power, and the vehicle's power demand includes: The battery's output power is added to the vehicle's required power to obtain the vehicle's actual output power under the selected power generation capacity. Based on the vehicle's actual output power and the vehicle's energy demand, the power generation time corresponding to the selected power generation capacity is determined.

5. The method according to claim 1, characterized in that, The step of determining the target power output of the engine under the current operating condition based on the difference between the fuel consumption and power generation time corresponding to the candidate power output and the current engine speed includes: Based on the candidate fuel consumption power generation corresponding to the candidate power generation, the power generation time corresponding to the selected power generation, and the difference between the engine's current speed, the penalty energy value corresponding to each candidate power generation is determined. The penalty energy value corresponding to each candidate power generation is compared, and the target power generation of the engine under the current operating condition is determined based on the comparison result.

6. An energy distribution device for a hybrid vehicle, the device being used to perform the energy distribution method for a hybrid vehicle as described in claim 1, characterized in that, include: The variation curve determination module is used to determine the variation curve between the engine's power generation and fuel consumption power generation based on the universal characteristic curve of the engine in the engine range extender. The demand power generation determination module is used to determine the vehicle's demand power generation under the current operating conditions based on the change curve between the power generation and fuel consumption power generation and the vehicle's demand power under the current operating conditions. The candidate power generation determination module is used to discretize a preset power generation range based on a preset power interval, determine multiple candidate power generation, and determine the oil consumption power generation corresponding to each candidate power generation based on the change curve between the power generation and the oil consumption power generation. The power generation time determination module is used to determine the power generation time corresponding to each candidate power generation power based on the battery charging and discharging efficiency, the vehicle's required power, the vehicle's required fuel consumption power generation, the fuel consumption power generation corresponding to each candidate power generation power and the required time. The candidate power determination module is used to determine the candidate power that meets the preset conditions from the candidate power based on the vehicle's required power, the vehicle's required fuel consumption and power generation, the fuel consumption and power generation corresponding to each candidate power and the power generation time, and the required time. The target power determination module is used to determine the target power of the engine under the current operating conditions based on the difference between the fuel consumption power generation and power generation time corresponding to the candidate power generation and the current speed of the engine.

7. An electronic device, characterized in that, The electronic device includes: At least one processor; and A memory communicatively connected to the at least one processor; wherein, The memory stores a computer program that can be executed by the at least one processor, the computer program being executed by the at least one processor to enable the at least one processor to perform the energy distribution method for the hybrid vehicle according to any one of claims 1-5.

8. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer instructions that, when executed by a processor, implement the energy distribution method for a hybrid vehicle as described in any one of claims 1-5.

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