Hydrogen hybrid vehicle power output method, device, medium, and vehicle

Abstract

The application provides a power output method and device of a hydrogen hybrid vehicle, a medium and a vehicle, and belongs to the technical field of hydrogen hybrid vehicles. The method comprises the following steps: obtaining a current SOC value of a power battery and a current vehicle demand power; obtaining a weight coefficient corresponding to the current SOC value and the current vehicle demand power respectively; and outputting the current available power of the hydrogen fuel cell after weighting based on the weight coefficient corresponding to the current SOC value and the current vehicle demand power respectively. According to the embodiment of the application, the current available power of the hydrogen fuel cell can be adjusted to a suitable position according to the actual demand of the vehicle on the basis of the current SOC value of the power battery and the comprehensive consideration of the current vehicle demand power, so that the hydrogen fuel cell can adapt to the variable dynamic power demand of the vehicle, and the demand of the vehicle for the output capacity and the power of the power battery is reduced, thereby reducing the vehicle cost and operation and maintenance cost while meeting the power demand of the vehicle.

Description

Technical Field

[0001] This application relates to the field of hydrogen hybrid electric vehicle technology, and in particular to a power output method, apparatus, medium, and vehicle for a hydrogen hybrid electric vehicle. Background Technology

[0002] The mainstream energy management strategy for hydrogen fuel cell vehicles on the market is the power-following strategy. The idea behind the power-following strategy is that the power required by the whole vehicle is mainly provided by the hydrogen fuel cell. However, since the power response speed of the hydrogen fuel cell is relatively slow, it cannot adapt to the changing power demand of the whole vehicle. Therefore, the missing power will be made up by the power battery to meet the dynamic power demand of the whole vehicle.

[0003] Current power follower strategies often set a fixed fuel cell output power based on the SOC window of different power batteries, that is, matching the corresponding fuel cell output power according to the SOC range to which the current SOC of the power battery belongs.

[0004] However, since the current SOC value of the power battery remains unchanged within the SOC window, the corresponding output power of the hydrogen fuel cell also remains unchanged. Therefore, when the vehicle needs to accelerate at full throttle urgently, the power rate of the hydrogen fuel cell cannot climb or the climbing rate is insufficient, resulting in insufficient power and significantly affecting acceleration performance, thereby increasing the cost of the vehicle. At the same time, frequently using the power battery to supplement the power required for vehicle acceleration will cause the SOC of the power battery to fluctuate more frequently, thereby affecting the life of the power battery and increasing subsequent maintenance costs. Summary of the Invention

[0005] This application provides a power output method, apparatus, medium, and vehicle for a hydrogen hybrid electric vehicle, to solve the problem that the power of the hydrogen fuel cell in a hydrogen hybrid electric vehicle is difficult to adapt to the dynamic power requirements of the entire vehicle.

[0006] To solve the above problems, this application adopts the following technical solution:

[0007] In a first aspect, embodiments of this application provide a power output method for a hydrogen hybrid electric vehicle, the hydrogen hybrid electric vehicle including a hydrogen fuel cell and a power battery, the method comprising:

[0008] Obtain the current SOC value of the power battery and the current power requirement of the vehicle;

[0009] Obtain the current SOC value and the weighting coefficients corresponding to the current vehicle power demand.

[0010] Based on the current SOC value and the weighting coefficients corresponding to the current vehicle power demand, the current available power of the hydrogen fuel cell is weighted and output.

[0011] In one embodiment of this application, obtaining the weighting coefficients corresponding to the current SOC value and the current vehicle power demand includes:

[0012] Based on the current SOC value, a power weighting coefficient corresponding to the current SOC value is determined; wherein, different SOC values ​​correspond to different power weighting coefficients, and the power weighting coefficient decreases as the SOC value increases;

[0013] Based on the current vehicle power demand, a power weighting coefficient corresponding to the current vehicle power demand is determined; wherein, different vehicle power demands correspond to different power weighting coefficients, and the power weighting coefficient increases as the vehicle power demand increases.

[0014] In one embodiment of this application, the available power of the hydrogen fuel cell is weighted and output based on the weighting coefficients corresponding to the current SOC value and the current vehicle power demand, including:

[0015] The total weight coefficient of the hydrogen fuel cell is determined based on the energy weight coefficient and the power weight coefficient; wherein, different combinations of energy weight coefficient and power weight coefficient correspond to their respective total weight coefficients.

[0016] The target output power of the hydrogen fuel cell is determined based on the total weighting coefficient and the current available power of the hydrogen fuel cell.

[0017] The hydrogen fuel cell is controlled to output power according to the target output power.

[0018] In one embodiment of this application, determining the power weighting coefficient corresponding to the current SOC value based on the current SOC value includes:

[0019] Based on the current SOC value, determine the preset SOC range to which the current SOC value belongs;

[0020] Based on the preset SOC range, the power weighting coefficient corresponding to the current SOC value is determined; wherein, different preset SOC ranges correspond to different power weighting coefficients.

[0021] In one embodiment of this application, determining the power weighting coefficient corresponding to the current vehicle power demand based on the current vehicle power demand includes:

[0022] Based on the current vehicle power demand, determine the preset power range to which the current vehicle power demand belongs;

[0023] Based on the preset power range, a power weighting coefficient corresponding to the current vehicle power requirement is determined; wherein, different preset power ranges correspond to different power weighting coefficients.

[0024] In one embodiment of this application, obtaining the current power demand of the entire vehicle includes:

[0025] Obtain the voltage and current data of the drive motor;

[0026] The product of the voltage data and the current data is taken as the current vehicle power requirement.

[0027] Secondly, based on the same inventive concept, embodiments of this application provide a power output device for a hydrogen hybrid electric vehicle. The device is used in a hydrogen hybrid electric vehicle, which includes a hydrogen fuel cell and a power battery. The device includes:

[0028] The first acquisition module is used to acquire the current SOC value of the power battery and the current power requirement of the vehicle.

[0029] The second acquisition module is used to acquire the current SOC value and the weighting coefficients corresponding to the current vehicle power demand.

[0030] The power output module is used to adjust and output the current available power of the hydrogen fuel cell based on the current SOC value and the weighting coefficients corresponding to the current vehicle power demand.

[0031] In one embodiment of this application, the second acquisition module includes:

[0032] The power weight coefficient determination submodule is used to determine the power weight coefficient corresponding to the current SOC value based on the current SOC value; wherein, different SOC values ​​correspond to different power weight coefficients, and the power weight coefficient decreases as the SOC value increases;

[0033] The power weighting coefficient determination submodule is used to determine the power weighting coefficient corresponding to the current vehicle power demand based on the current vehicle power demand; wherein, different vehicle power demands correspond to different power weighting coefficients, and the power weighting coefficient increases as the vehicle power demand increases.

[0034] In one embodiment of this application, the power output module includes:

[0035] The total weight coefficient determination submodule is used to determine the total weight coefficient of the hydrogen fuel cell based on the energy weight coefficient and the power weight coefficient; wherein, different combinations of energy weight coefficient and power weight coefficient correspond to their respective total weight coefficients;

[0036] The target output power determination submodule is used to determine the target output power of the hydrogen fuel cell based on the total weighting coefficient and the current available power of the hydrogen fuel cell;

[0037] The control submodule is used to control the hydrogen fuel cell to output power according to the target output power.

[0038] In one embodiment of this application, the power weighting coefficient determination submodule includes:

[0039] A preset SOC interval determination subunit is used to determine the preset SOC interval to which the current SOC value belongs based on the current SOC value;

[0040] The power weight coefficient determination subunit is used to determine the power weight coefficient corresponding to the current SOC value based on the preset SOC range; wherein, different preset SOC ranges correspond to different power weight coefficients.

[0041] In one embodiment of this application, the power weighting coefficient determination submodule includes:

[0042] The preset power range determination subunit is used to determine the preset power range to which the current vehicle power demand belongs based on the current vehicle power demand.

[0043] The power weighting coefficient determination subunit is used to determine the power weighting coefficient corresponding to the current vehicle power requirement based on the preset power range; wherein, different preset power ranges correspond to different power weighting coefficients.

[0044] In one embodiment of this application, the first acquisition module includes:

[0045] The data acquisition submodule is used to acquire the voltage and current data of the drive motor;

[0046] The calculation submodule takes the product of the voltage data and the current data as the current vehicle power requirement.

[0047] Thirdly, based on the same inventive concept, embodiments of this application provide a storage medium storing machine-executable instructions, which, when executed by a processor, implement the power output method for a hydrogen hybrid electric vehicle proposed in the first aspect of this application.

[0048] Fourthly, based on the same inventive concept, embodiments of this application provide a vehicle including a processor and a memory. The memory stores machine-executable instructions that can be executed by the processor, and the processor executes the machine-executable instructions to implement the power output method of the hydrogen hybrid electric vehicle proposed in the first aspect of this application.

[0049] Compared with the prior art, this application has the following advantages:

[0050] This application provides a power output method for a hydrogen hybrid electric vehicle. The method involves obtaining the current State of Charge (SOC) value of the power battery and the current power demand of the vehicle; obtaining the weighting coefficients corresponding to the current SOC value and the current power demand of the vehicle; and weighting and outputting the available power of the hydrogen fuel cell based on these weighting coefficients. This application, based on the current SOC value of the power battery, comprehensively considers the current power demand of the vehicle, mapping the vehicle's demand for hydrogen fuel cell output power from two dimensions: the current SOC value of the power battery and the magnitude of the vehicle's power demand. This allows the output power of the hydrogen fuel cell to be adjusted to a suitable position according to the actual situation of the vehicle, enabling the hydrogen fuel cell to adapt to the vehicle's changing dynamic power demands and reducing the vehicle's demand on the power battery's output capacity and charge. This satisfies the vehicle's power requirements while reducing overall vehicle costs and maintenance costs. Attached Figure Description

[0051] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the 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.

[0052] Figure 1 This is a flowchart of the steps of a power output method for a hydrogen hybrid electric vehicle according to an embodiment of this application;

[0053] Figure 2 This is a functional module schematic diagram of a power output device for a hydrogen hybrid electric vehicle according to one embodiment of this application.

[0054] Reference numerals: 200 - Power output device of hydrogen hybrid electric vehicle; 201 - First acquisition module; 202 - Second acquisition module; 203 - Power output module. Detailed Implementation

[0055] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. 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 are within the scope of protection of the present invention.

[0056] Referring to Table 1, the relationship between the SOC window of the power battery and the output power of the hydrogen fuel cell in existing power follower strategies is shown, where P2 represents the available power of the hydrogen fuel cell. It should be noted that the SOC window of the power battery is usually selected based on empirical values, and the selection of the power output point of the hydrogen fuel cell also considers relatively few factors; that is, when the current SOC of the power battery is high, the fuel cell output power is low, and when the current SOC of the power battery is low, the fuel cell output power is high.

[0057] Table 1. Relationship between the SOC window of the power battery and the output power of the hydrogen fuel cell

[0058]

[0059] It should be noted that, according to the principle of power follow-up strategy, the power demand of the vehicle is primarily provided by the hydrogen fuel cell, with the power supplied by the battery for any shortfall in instantaneous response. For example, suppose the available power of the hydrogen fuel cell is P2, and the maximum power demand of the vehicle is P3. When the vehicle's power demand increases to the full value of P3, the hydrogen fuel cell needs to ramp up its power to P2 within a short period. During this time, the power demand shortfall will be made up by the battery. The slower the fuel cell power ramp-up, the higher the output capacity requirement of the battery, and the greater the demand on the battery's charge capacity.

[0060] On the other hand, the power output point of hydrogen fuel cells is usually set by empirical values. Referring to Table 1, taking a power battery SOC window of 65%-85% as an example, when the current SOC of the power battery is between 65% and 85%, the output power of the hydrogen fuel cell is 0.4*P2. This value is usually an empirical value, and in actual applications, this empirical value will always deviate from the actual power demand of the vehicle. This causes the power battery to frequently supplement the power lacking in the hydrogen fuel cell, resulting in frequent changes in the SOC of the power battery, reducing the lifespan of the power battery, and making it difficult to ensure sufficient reserve power in the power battery.

[0061] Therefore, in the traditional power follower strategy, simply relying on the SOC window of the power battery cannot accurately reflect the vehicle's requirements for the output power of the hydrogen fuel cell.

[0062] To address the problems existing in the aforementioned background technology, this application aims to provide a power output method for a hydrogen hybrid electric vehicle. Based on the current SOC value of the power battery, and comprehensively considering the current power demand of the entire vehicle, the method maps the vehicle's demand for hydrogen fuel cell output power from two dimensions: the current SOC value of the power battery and the magnitude of the vehicle's power demand. This allows the method to automatically identify a reasonable power output point for the hydrogen fuel cell based on the actual operating conditions of the vehicle and even different driving styles, thereby enabling the fuel cell to operate at a suitable position and adapt to the vehicle's changing dynamic power demands.

[0063] Reference Figure 1 This application illustrates a power output method for a hydrogen hybrid electric vehicle, which includes a hydrogen fuel cell and a power battery. The method may include the following steps:

[0064] S101: Obtain the current SOC value of the power battery and the current power requirement of the vehicle.

[0065] It should be noted in this embodiment that hydrogen hybrid electric vehicles are typically powered by both hydrogen fuel cells and power batteries, and the power required by the vehicle is primarily provided by the hydrogen fuel cells, while the power supplied for any short-term power shortage is provided by the power batteries.

[0066] It is important to further explain that a hydrogen fuel cell is a power generation device that directly converts the chemical energy of hydrogen and oxygen into electrical energy. Its basic principle is the reverse reaction of water electrolysis. Hydrogen and oxygen are supplied to the anode and cathode, respectively. Hydrogen diffuses outward through the anode and reacts with the electrolyte, releasing electrons that travel through an external load to the cathode. Therefore, a hydrogen fuel cell differs from a power battery in that it does not have the traditional concept of SOC (State of Charge). SOC reflects the remaining capacity of the battery and is numerically defined as the ratio of remaining capacity to the battery's total capacity, usually expressed as a percentage. Its value ranges from 0 to 1; when SOC = 0, the battery is fully discharged, and when SOC = 1, the battery is fully charged.

[0067] In this embodiment, considering the selection of hydrogen fuel cell output power, in addition to the current SOC value of the power battery, it should also be related to the power demand of the entire vehicle. Furthermore, the lower the current SOC value of the power battery and the higher the power demand of the entire vehicle, the higher the output power of the hydrogen fuel cell should be. In this way, the actual demand of the vehicle on the fuel cell output power can be more comprehensively reflected.

[0068] S102: Obtain the current SOC value and the weighting coefficients corresponding to the current vehicle power demand.

[0069] In this embodiment, the impact on the output power of the hydrogen fuel cell varies depending on the current SOC value and the current vehicle power demand. Therefore, based on preset mapping relationships between different SOC values ​​and weighting coefficients, and preset mapping relationships between different vehicle power demands and weighting coefficients, the weighting coefficients corresponding to the current SOC value and the current vehicle power demand are obtained.

[0070] S103: Based on the current SOC value and the weighting coefficients corresponding to the current vehicle power demand, the available power of the hydrogen fuel cell is weighted and output.

[0071] In this embodiment, based on the weighting coefficients corresponding to the current SOC value and the current power demand of the vehicle, the total weighting coefficient of the hydrogen fuel cell can be obtained. The larger the total weighting coefficient, the greater the power output required. In other words, during vehicle operation, the power battery needs the fuel cell to increase its output power in both low SOC and / or high power demand states of the vehicle. Therefore, assigning weights to different current SOC values ​​and different current power demands of the vehicle can more comprehensively reflect the actual power demand of the fuel cell on the vehicle.

[0072] In this embodiment, after determining the total weighting coefficient of the hydrogen fuel cell, the output can be adjusted based on the current available power of the hydrogen fuel cell. For example, when the user accelerates at full speed, it indicates that the vehicle's current power demand is high, and the weighting coefficient corresponding to this power demand is also high. Furthermore, the current state of charge (SOC) of the power battery is low, and the weighting coefficient corresponding to this SOC is also high, resulting in a high total weighting coefficient. In this case, the output power of the hydrogen fuel cell can be directly increased to the available power, or to 90% of the available power. The specific value of the output power can be set according to the magnitude of the total weighting coefficient, where available power represents the maximum power that the fuel cell can currently provide. Thus, while the hydrogen fuel cell quickly responds to the vehicle's power demand, it effectively reduces the vehicle's demand on the power battery's output capacity and charge.

[0073] In this embodiment, the vehicle's demand for hydrogen fuel cell output power is mapped from two dimensions: the current SOC value of the power battery and the power demand of the vehicle. This allows the output power of the hydrogen fuel cell to be adjusted to a suitable position, enabling the hydrogen fuel cell to adapt to the vehicle's changing dynamic power demands. It also reduces the vehicle's demand on the power battery's output capacity and power, avoids frequent fluctuations in the power battery's SOC, extends the power battery's lifespan, and reduces vehicle costs and maintenance costs while meeting the vehicle's power requirements.

[0074] In one feasible implementation, S102 may specifically include the following sub-steps:

[0075] S102-1: Based on the current SOC value, determine the power weight coefficient corresponding to the current SOC value; where different SOC values ​​correspond to different power weight coefficients, and the power weight coefficient decreases as the SOC value increases.

[0076] In this embodiment, a mapping relationship between the SOC value and the energy weighting coefficient is pre-established for the SOC value of the power battery. Based on this mapping relationship, the energy weighting coefficient corresponding to the current SOC value can be determined.

[0077] It should be noted in this embodiment that the smaller the current SOC value of the power battery, the larger the energy weighting coefficient corresponding to the current SOC value, indicating that the hydrogen fuel cell should output more power. In this way, the power demand on the power battery can be reduced, the frequent fluctuations of the SOC value of the power battery can be avoided, and the battery capacity of the power battery can be guaranteed.

[0078] S102-2: Based on the current vehicle power demand, determine the power weighting coefficient corresponding to the current vehicle power demand; where different vehicle power demands correspond to different power weighting coefficients, and the power weighting coefficient increases as the vehicle power demand increases.

[0079] In this embodiment, a mapping relationship between the current vehicle power demand and the power weighting coefficient is pre-established for the current vehicle power demand. Based on this mapping relationship, the power weighting coefficient corresponding to the current vehicle power demand can be determined.

[0080] It should be noted in this embodiment that the greater the current power demand of the vehicle, the greater the power weighting coefficient corresponding to the current power demand of the vehicle, indicating that the hydrogen fuel cell should output a greater power. In this way, when the vehicle needs a large output power, the hydrogen fuel cell can respond quickly and increase its output power to meet the power demand of the vehicle and improve the user's driving experience.

[0081] In a feasible implementation, S102-1 may specifically include the following sub-steps:

[0082] S102-1-1: Based on the current SOC value, determine the preset SOC interval to which the current SOC value belongs.

[0083] S102-1-2: Based on the preset SOC range, determine the power weight coefficient corresponding to the current SOC value; where different preset SOC ranges correspond to different power weight coefficients.

[0084] In this embodiment, referring to Table 2, the mapping relationship between different preset SOC ranges and the power weighting coefficient is shown.

[0085] Table 2. Mapping relationship between different preset SOC ranges and energy weighting coefficients

[0086]

[0087] In this embodiment, the commonly used SOC range (15%-95%) of power batteries is divided according to a 10% gradient, resulting in 6 preset SOC ranges with different ranges. The smaller the SOC value corresponding to the preset SOC range, the larger the energy weight coefficient corresponding to the preset SOC range is set, thus obtaining 6 different energy weight coefficients as shown in Table 2.

[0088] In this embodiment, after obtaining the current SOC value, it is possible to directly determine the preset SOC range to which it belongs, and based on the preset SOC range, determine the corresponding power weighting coefficient.

[0089] In this embodiment, by dividing the SOC range and assigning corresponding energy weight coefficients, the energy weight coefficients corresponding to the current SOC value can be quickly obtained, thereby improving the system response speed while effectively reflecting the actual demand of the vehicle on the fuel cell output power.

[0090] In a feasible implementation, S102-2 may specifically include the following sub-steps:

[0091] S102-2-1: Based on the current power demand of the vehicle, determine the preset power range to which the current power demand of the vehicle belongs.

[0092] S102-2-2: Based on the preset power range, determine the power weighting coefficient corresponding to the current vehicle power demand; where different preset power ranges correspond to different power weighting coefficients.

[0093] In this embodiment, referring to Table 3, the mapping relationship between different preset power ranges and power weighting coefficients is shown, where P3 represents the maximum power demand of the vehicle.

[0094] Table 3. Mapping relationship between different preset power ranges and energy weighting coefficients

[0095]

[0096] It should be noted in this embodiment that P3, which is the maximum power required by the vehicle, is a calibration value used to characterize the maximum power that the vehicle can achieve under various operating conditions. For example, for a tractor, P3 can be the maximum power required by the whole vehicle under CHTC-TT (China heavy-duty commercial vehicle test cycle for tractor-trailer, semi-trailer tractor train operating conditions).

[0097] In this embodiment, based on the vehicle's maximum power demand P3, five different preset power ranges can be obtained. The power weight coefficient corresponding to the preset power range is set to be larger as the current vehicle power demand corresponding to the preset power range is smaller, thus obtaining five different power weight coefficients as shown in Table 2.

[0098] In this embodiment, after obtaining the current power requirement of the vehicle, the power range to which it belongs can be directly determined, and the corresponding power weighting coefficient can be determined based on the power range.

[0099] In one feasible implementation, S103 may specifically include the following sub-steps:

[0100] S103-1: Determine the total weight coefficient of the hydrogen fuel cell based on the energy weight coefficient and the power weight coefficient; wherein, different combinations of energy weight coefficient and power weight coefficient correspond to their respective total weight coefficients.

[0101] In this embodiment, based on the data in Tables 2 and 3, a weighted summation table of the electricity weight coefficient and the power weight coefficient, as shown in Table 4, can be obtained.

[0102] Table 4. Weighted summation of energy weighting coefficient and power weighting coefficient

[0103]

[0104] In this embodiment, different combinations of power weight coefficients and energy weight coefficients correspond to their respective total weight coefficients. By combining them in pairs, a total of 10 total weight coefficients can be obtained as shown in Table 4, namely 2-11.

[0105] S103-2: Determine the target output power of the hydrogen fuel cell based on the total weighting coefficient and the current available power of the hydrogen fuel cell.

[0106] In this embodiment, referring to Table 5, a mapping relationship table between the total weighting coefficient and the output power of the hydrogen fuel cell is shown, where P2 represents the available power of the hydrogen fuel cell.

[0107] Table 5. Mapping Relationship between Total Weighting Coefficient and Hydrogen Fuel Cell Output Power

[0108]

[0109] In this embodiment, based on the 10 total weighting coefficients from 2 to 11, the output power of the hydrogen fuel cell is divided into 10 different power output values ​​as shown in Table 5, with a gradient of 10%. After determining the total weighting coefficients of the hydrogen fuel cell based on the energy weighting coefficient and the power weighting coefficient, the corresponding target output power can be found in Table 5.

[0110] S103-3: Control the hydrogen fuel cell to output power according to the target output power.

[0111] In this embodiment, by dividing the output power of the hydrogen fuel cell into 10 different values, the adaptability to different operating conditions and driving styles is increased. This allows the hydrogen fuel cell to fully meet the power output requirements under various operating conditions, reduce the vehicle's demand on the output capacity and power of the power battery, avoid frequent fluctuations in the power battery's SOC, extend the power battery's lifespan, and reduce the overall vehicle cost and maintenance cost while meeting the vehicle's power requirements.

[0112] In one feasible implementation, S101 may specifically include the following steps:

[0113] S101-1: Obtain the voltage and current data of the drive motor.

[0114] S101-2: The product of voltage and current data is used as the current power requirement of the vehicle.

[0115] In this embodiment, the current power requirement of the vehicle can be calculated according to the following formula:

[0116] P'=U*I(2)

[0117] In the formula: P' represents the current power demand of the vehicle; U represents the voltage of the drive motor; and I represents the current of the drive motor.

[0118] It should be noted that, since the hydrogen fuel cell and the power battery share a single drive motor in a hydrogen hybrid electric vehicle, the current power demand of the vehicle can be accurately calculated by collecting the voltage and current data of the drive motor. This provides a basis for determining the power weighting coefficient corresponding to the current power demand of the vehicle.

[0119] Secondly, referring to Figure 2 Based on the same inventive concept, this application provides a power output device 200 for a hydrogen hybrid electric vehicle. The power output device 200 is used in a hydrogen hybrid electric vehicle, which includes a hydrogen fuel cell and a power battery. The power output device 200 includes:

[0120] The first acquisition module 201 is used to acquire the current SOC value of the power battery and the current power demand of the vehicle.

[0121] The second acquisition module 202 is used to acquire the current SOC value and the weight coefficients corresponding to the current vehicle power demand.

[0122] The power output module 203 is used to output the current available power of the hydrogen fuel cell after weighting based on the current SOC value and the weighting coefficients corresponding to the current power demand of the whole vehicle.

[0123] In one feasible implementation, the second acquisition module 202 includes:

[0124] The power weight coefficient determination submodule is used to determine the power weight coefficient corresponding to the current SOC value based on the current SOC value; different SOC values ​​correspond to different power weight coefficients, and the power weight coefficient decreases as the SOC value increases;

[0125] The power weight coefficient determination submodule is used to determine the power weight coefficient corresponding to the current vehicle power demand based on the current vehicle power demand. Different vehicle power demands correspond to different power weight coefficients, and the power weight coefficient increases as the vehicle power demand increases.

[0126] In one feasible implementation, the power output module 203 includes:

[0127] The total weight coefficient determination submodule is used to determine the total weight coefficient of the hydrogen fuel cell based on the energy weight coefficient and the power weight coefficient; wherein, different combinations of energy weight coefficient and power weight coefficient correspond to their respective total weight coefficients.

[0128] The target output power determination submodule is used to determine the target output power of the hydrogen fuel cell based on the total weighting coefficient and the current available power of the hydrogen fuel cell.

[0129] The control submodule is used to control the hydrogen fuel cell to output power according to the target output power.

[0130] In one feasible implementation, the power weighting coefficient determination submodule includes:

[0131] The preset SOC interval determination sub-unit is used to determine the preset SOC interval to which the current SOC value belongs based on the current SOC value.

[0132] The power weight coefficient determination subunit is used to determine the power weight coefficient corresponding to the current SOC value based on a preset SOC range; different preset SOC ranges correspond to different power weight coefficients.

[0133] In one feasible implementation, the power weighting coefficient determination submodule includes:

[0134] The preset power range determination subunit is used to determine the preset power range to which the current vehicle power demand belongs based on the current vehicle power demand.

[0135] The power weighting coefficient determination subunit is used to determine the power weighting coefficient corresponding to the current vehicle power requirement based on a preset power range; different preset power ranges correspond to different power weighting coefficients.

[0136] In one feasible implementation, the first acquisition module 201 includes:

[0137] The data acquisition submodule is used to acquire the voltage and current data of the drive motor;

[0138] The calculation submodule multiplies the voltage data and current data as the current power demand of the vehicle. It should be noted that the specific implementation of the power output device 200 for the hydrogen hybrid electric vehicle in this application embodiment refers to the specific implementation of the power output method for the hydrogen hybrid electric vehicle proposed in the first aspect of the aforementioned application embodiment, and will not be repeated here.

[0139] Thirdly, based on the same inventive concept, embodiments of this application provide a storage medium storing machine-executable instructions, which, when executed by a processor, implement the power output method for a hydrogen hybrid electric vehicle proposed in the first aspect of this application.

[0140] It should be noted that the specific implementation of the storage medium in this application embodiment refers to the specific implementation of the power output method of the hydrogen hybrid electric vehicle proposed in the first aspect of the above-mentioned application embodiment, and will not be repeated here.

[0141] Fourthly, based on the same inventive concept, embodiments of this application provide a vehicle including a processor and a memory. The memory stores machine-executable instructions that can be executed by the processor, and the processor executes the machine-executable instructions to implement the power output method of the hydrogen hybrid electric vehicle proposed in the first aspect of this application.

[0142] It should be noted that the specific implementation method of the vehicle in this application embodiment refers to the specific implementation method of the power output method of the hydrogen hybrid electric vehicle proposed in the first aspect of the above-mentioned application embodiment, and will not be repeated here.

[0143] Those skilled in the art will understand that embodiments of the present invention can be provided as methods, apparatus, or computer program products. Therefore, embodiments of the present invention can take the form of entirely hardware embodiments, entirely software embodiments, or embodiments combining software and hardware aspects. Furthermore, embodiments of the present invention can take the form of computer program products implemented 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.

[0144] Embodiments of the present invention are described with reference to flowchart illustrations and / or block diagrams of methods, terminal devices (systems), and computer program products according to embodiments of the invention. 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 terminal device to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing terminal device, generate instructions for implementing the flowchart illustrations and / or block diagrams. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0145] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing terminal device to operate 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.

[0146] These computer program instructions can also be loaded onto a computer or other programmable data processing terminal equipment, causing a series of operational steps to be performed on the computer or other programmable terminal equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable terminal 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.

[0147] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the embodiments of the present invention.

[0148] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or terminal device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or terminal device. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or terminal device that includes said element.

[0149] The above provides a detailed description of the power output method, apparatus, medium, and vehicle for a hydrogen hybrid electric vehicle provided by the present invention. Specific examples have been used to illustrate the principles and implementation methods of the present invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of the present invention. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of the present invention. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. A power output method for a hydrogen hybrid electric vehicle, characterized in that, The hydrogen hybrid electric vehicle includes a hydrogen fuel cell and a power battery, and the method includes: Obtain the current SOC value of the power battery and the current power requirement of the vehicle; Based on the current SOC value, a power weighting coefficient corresponding to the current SOC value is determined; wherein, different SOC values ​​correspond to different power weighting coefficients, and the power weighting coefficient decreases as the SOC value increases; Based on the current vehicle power demand, a power weighting coefficient corresponding to the current vehicle power demand is determined; wherein, different vehicle power demands correspond to different power weighting coefficients, and the power weighting coefficient increases as the vehicle power demand increases; The total weight coefficient of the hydrogen fuel cell is determined based on the energy weight coefficient and the power weight coefficient; wherein, different combinations of energy weight coefficient and power weight coefficient correspond to their respective total weight coefficients. The target output power of the hydrogen fuel cell is determined based on the total weighting coefficient and the current available power of the hydrogen fuel cell. The hydrogen fuel cell is controlled to output power according to the target output power.

2. The method according to claim 1, characterized in that, Based on the current SOC value, the power weighting coefficient corresponding to the current SOC value is determined, including: Based on the current SOC value, determine the preset SOC range to which the current SOC value belongs; Based on the preset SOC range, the power weighting coefficient corresponding to the current SOC value is determined; wherein, different preset SOC ranges correspond to different power weighting coefficients.

3. The method according to claim 1, characterized in that, Based on the current vehicle power demand, determine the power weighting coefficient corresponding to the current vehicle power demand, including: Based on the current vehicle power demand, determine the preset power range to which the current vehicle power demand belongs; Based on the preset power range, a power weighting coefficient corresponding to the current vehicle power requirement is determined; wherein, different preset power ranges correspond to different power weighting coefficients.

4. The method according to claim 1, characterized in that, Obtain the current power requirement of the entire vehicle, including: Obtain the voltage and current data of the drive motor; The product of the voltage data and the current data is taken as the current vehicle power requirement.

5. A power output device for a hydrogen hybrid electric vehicle, characterized in that, The device is used in a hydrogen hybrid electric vehicle, which includes a hydrogen fuel cell and a power battery. The device includes: The first acquisition module is used to acquire the current SOC value of the power battery and the current power requirement of the vehicle. The second acquisition module includes: The power weight coefficient determination submodule is used to determine the power weight coefficient corresponding to the current SOC value based on the current SOC value; wherein, different SOC values ​​correspond to different power weight coefficients, and the power weight coefficient decreases as the SOC value increases; The power weight coefficient determination submodule is used to determine the power weight coefficient corresponding to the current vehicle demand power based on the current vehicle demand power; wherein, different vehicle demand power corresponds to different power weight coefficients, and the power weight coefficient increases as the vehicle demand power increases; The power output module includes: The total weight coefficient determination submodule is used to determine the total weight coefficient of the hydrogen fuel cell based on the energy weight coefficient and the power weight coefficient; wherein, different combinations of energy weight coefficient and power weight coefficient correspond to their respective total weight coefficients; The target output power determination submodule is used to determine the target output power of the hydrogen fuel cell based on the total weighting coefficient and the current available power of the hydrogen fuel cell; The control submodule is used to control the hydrogen fuel cell to output power according to the target output power.

6. A storage medium, characterized in that, The storage medium stores machine-executable instructions, which, when executed by a processor, implement the method as described in any one of claims 1-4.

7. A vehicle, characterized in that, The method includes a processor and a memory, the memory storing machine-executable instructions that can be executed by the processor, the processor executing the machine-executable instructions to implement the method as described in any one of claims 1-4.

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