Automobile energy management control method, system and equipment and storage medium

Abstract

The invention discloses an automobile energy management control method, system and device and a storage medium. The method comprises the steps that the current rated demand power of a target vehicle and the preset upper limit loading power of a fuel cell in the target vehicle are obtained; comparing the current rated demand power with the preset upper limit loading power to obtain a comparison result; based on the comparison result, a target energy management strategy is determined to be matched from multiple preset energy management strategies, and the multiple preset energy management strategies comprise a power following strategy and a stepped strategy; and controlling the battery loading power corresponding to the target vehicle based on the target energy management strategy. Based on the comparison result of the current rated demand power of the vehicle and the preset upper limit power of the fuel cell in the vehicle, the vehicle energy management strategy is dynamically adjusted, and the economy of the whole vehicle is improved while the service life of the fuel cell is protected.

Description

Technical Field

[0001] The present application relates to the field of fuel cell technology, and in particular to an automobile energy management control method, system, device and storage medium. Background Art

[0002] As an important branch of new energy vehicles, fuel cell vehicles have the advantages of energy saving, environmental protection, high efficiency, zero emission, low noise, strong environmental adaptability, etc. However, fuel cell engines have disadvantages such as soft output characteristics and transient response hysteresis. Therefore, in the automotive power system with fuel cells as the main power source, auxiliary power batteries are often equipped, forming the current common fuel cell-lithium battery hybrid system.

[0003] For current fuel cell-lithium battery hybrid fuel cell vehicles, when the output power of the fuel cell engine changes with less load, it can protect the life of the fuel cell, but the lithium battery throughput is large, which often causes too much power generated by the fuel cell to enter the lithium battery cycle charge and discharge. The resulting charge and discharge losses reduce the efficiency of the fuel cell system and lead to high hydrogen consumption of the vehicle; when the output power of the fuel cell engine changes frequently, the frequency of lithium battery charge and discharge is reduced, which has a certain effect on improving the efficiency of the fuel cell system, making the whole vehicle hydrogen consumption less, but it will cause the rapid decay of the fuel cell life. Therefore, there is an urgent need for an automotive energy management method that can protect the life of the fuel cell while improving the efficiency of the fuel cell system and improving the economy of the whole vehicle. Summary of the invention

[0004] In order to solve at least one of the technical problems mentioned above, the present application proposes an automobile energy management control method, system, device and storage medium.

[0005] According to one aspect of the present application, a vehicle energy management control method is disclosed, the method comprising:

[0006] Obtaining a current rated required power of a target vehicle and a preset upper limit loading power of a fuel cell in the target vehicle;

[0007] Comparing the current rated required power with the preset upper limit load power to obtain a comparison result;

[0008] Based on the comparison result, determining to match a target energy management strategy from a plurality of preset energy management strategies, wherein the plurality of preset energy management strategies include a power following strategy and a step strategy, wherein the power following strategy indicates that the battery loading power corresponding to the target vehicle follows the target demand power adjustment of the target vehicle, and the step strategy indicates that the battery loading power is output according to the target output power;

[0009] Based on the target energy management strategy, the battery loading power corresponding to the target vehicle is controlled.

[0010] In some possible implementations, determining, based on the comparison result, to match a target energy management strategy from a plurality of preset energy management strategies includes:

[0011] When the comparison result indicates that the current rated required power is greater than or equal to the preset upper limit load power, the power following strategy is used as the target energy management strategy.

[0012] In some possible implementations, the target required power is a preset upper limit required power of the target vehicle; and controlling the battery loading power corresponding to the target vehicle based on the target energy management strategy includes:

[0013] Obtaining a preset upper limit required power of the target vehicle;

[0014] Determining a current loading power of the fuel cell within a preset time period;

[0015] Determining a required power difference according to the current loaded power and the preset upper limit required power;

[0016] On the basis of controlling the fuel cell to use the current loaded power as the output power, the output power of the lithium battery in the target vehicle is controlled based on the required power difference.

[0017] In some possible implementations, controlling the battery loading power corresponding to the target vehicle based on the target energy management strategy further includes:

[0018] During the preset time period, controlling the power loading rate of the fuel cell to be a first preset loading rate;

[0019] Wherein, the first preset loading rate is less than or equal to a preset threshold.

[0020] In some possible implementations, determining, based on the comparison result, to match a target energy management strategy from a plurality of preset energy management strategies includes:

[0021] When the comparison result indicates that the current rated demand power is less than the preset upper limit load power, the power following strategy and the step strategy are used as the target energy management strategy.

[0022] In some possible implementations, the target required power is the current rated required power; and controlling the battery loading power corresponding to the target vehicle based on the target energy management strategy includes:

[0023] Obtaining a preset upper limit power requirement of the target vehicle and a remaining power of a lithium battery in the target vehicle;

[0024] determining a preset output power of the fuel cell corresponding to the remaining power;

[0025] Controlling the target loading power of the fuel cell to follow the current rated demand power adjustment until the target loading power reaches the current rated demand power;

[0026] The minimum power among the preset upper limit required power, the preset upper limit loaded power and the preset output power is taken as the target output power;

[0027] The target loading power is controlled to follow the target output power so that the target loading power reaches the target output power.

[0028] In some possible implementations, controlling the battery loading power corresponding to the target vehicle based on the target energy management strategy further includes:

[0029] Controlling the power loading rate of the fuel cell to be a second preset loading rate;

[0030] Wherein, the second preset loading rate is less than or equal to a preset threshold.

[0031] In some possible implementations, the method further includes:

[0032] Obtaining the remaining power of the lithium battery in the target vehicle;

[0033] The obtaining of the current rated required power of the target vehicle and the preset upper limit loading power of the fuel cell in the target vehicle comprises:

[0034] When the remaining power is greater than or equal to a first preset power value and less than or equal to a second preset power value, the step of obtaining the current rated demand power of the target vehicle and the preset upper limit loading power of the fuel cell in the target vehicle is performed; wherein the first preset power value is less than the second preset power value.

[0035] In some possible implementations, obtaining the current rated required power of the target vehicle includes:

[0036] Collecting vehicle operating data, target vehicle speed, external ambient air density, and target efficiency value of the target vehicle within a preset time period;

[0037] The current rated required power is determined based on the vehicle operating condition data, the target vehicle speed, the ambient air density outside the vehicle, and the target efficiency value.

[0038] In some possible implementations, obtaining the preset upper limit required power of the target vehicle includes:

[0039] Collecting vehicle operating data, target vehicle speed, external ambient air density, and target efficiency value of the target vehicle within a preset time period;

[0040] The preset upper limit required power is determined based on the vehicle operating condition data, the target vehicle speed, the ambient air density outside the vehicle, and the target efficiency value.

[0041] According to another aspect of the present application, an automobile energy management control system is also disclosed, the system comprising:

[0042] A data acquisition module, used to acquire the current rated required power of the target vehicle and the preset upper limit loading power of the fuel cell in the target vehicle;

[0043] A data comparison module, used for comparing the current rated required power with the preset upper limit loading power to obtain a comparison result;

[0044] An energy management strategy matching module is used to determine, based on the comparison result, to match a target energy management strategy from a plurality of preset energy management strategies, wherein the plurality of preset energy management strategies include a power following strategy and a step strategy, wherein the power following strategy indicates that the battery loading power corresponding to the target vehicle follows the target demand power adjustment of the target vehicle; and the step strategy indicates that the battery loading power is output according to the target output power;

[0045] A data processing module is used to control the battery loading power corresponding to the target vehicle based on the target energy management strategy.

[0046] According to another aspect of the present application, an automobile energy management control device is also disclosed, which includes a processor and a memory, wherein the memory stores at least one instruction, at least one program, a code set or an instruction set, and the at least one instruction, the at least one program, the code set or the instruction set are loaded and executed by the processor to implement the automobile energy management control method as described above.

[0047] According to another aspect of the present application, a computer-readable storage medium is also disclosed, in which at least one instruction, at least one program, a code set or an instruction set is stored. The at least one instruction, the at least one program, the code set or the instruction set is loaded and executed by a processor to implement the above-mentioned automobile energy management control method.

[0048] Due to the above technical solution, this application has the following beneficial effects:

[0049] Based on the comparison results of the vehicle's current rated demand power and the preset upper limit power of the fuel cell in the vehicle, a suitable target energy management strategy is matched from a variety of preset energy management strategies, so as to improve the economy of the whole vehicle while protecting the life of the fuel cell, improve the efficiency of the fuel cell system, and obtain better vehicle dynamic response. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] In order to more clearly illustrate the technical solution of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0051] Figure 1 It is a flow chart of an automobile energy management control method provided in an embodiment of the present application;

[0052] Figure 2 This is a schematic diagram of the process of controlling the battery loading power corresponding to the target vehicle provided in the embodiment of the present application. Figure 1 ;

[0053] Figure 3 This is a schematic diagram of the process of controlling the battery loading power corresponding to the target vehicle provided in the embodiment of the present application. Figure 2 ;

[0054] Figure 4 It is a flow chart of another automobile energy management control method provided in an embodiment of the present application;

[0055] Figure 5 It is a structural block diagram of an automobile energy management control system provided in an embodiment of the present application. DETAILED DESCRIPTION

[0056] In order to enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of this application.

[0057] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or server that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0058] Various exemplary embodiments, features and aspects of the present disclosure will be described in detail below with reference to the accompanying drawings. The same reference numerals in the accompanying drawings represent elements with the same or similar functions. Although various aspects of the embodiments are shown in the accompanying drawings, the drawings are not necessarily drawn to scale unless otherwise specified.

[0059] The word “exemplary” is used exclusively herein to mean “serving as an example, example, or illustration.” Any embodiment described herein as “exemplary” is not necessarily to be construed as preferred or advantageous over other embodiments.

[0060] The term "and / or" herein is only a description of the association relationship of the associated objects, indicating that there may be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the term "at least one" herein represents any combination of at least two of any one or more of a plurality of. For example, including at least one of A, B, and C can represent including any one or more elements selected from the set consisting of A, B, and C.

[0061] In addition, in order to better illustrate the present application, numerous specific details are given in the following specific embodiments. It should be understood by those skilled in the art that the present application can also be implemented without certain specific details. In some examples, methods, means, components and circuits well known to those skilled in the art are not described in detail in order to highlight the subject matter of the present application.

[0062] Figure 1 is a flow chart of an automobile energy management control method provided in an embodiment of the present application; Figure 1 As shown, the method includes:

[0063] Step S101: obtaining a current rated required power of a target vehicle and a preset upper limit loading power of a fuel cell in the target vehicle;

[0064] In the embodiment of the present application, the current rated demand power of the target vehicle is the power required to keep the target vehicle running for a long time during the continuous driving of the target vehicle; the preset upper limit loading power of the fuel cell in the target vehicle is the maximum power that the fuel cell can output, that is, the maximum loadable power of the fuel cell. Based on the correspondence between different operating conditions and the preset upper limit loading power of the fuel cell, the vehicle controller can directly obtain the preset upper limit loading power of the fuel cell that matches the current operating conditions; that is, the fuel cell system will send the maximum power that the fuel cell that matches the current operating conditions can be allowed to load to the vehicle based on the correspondence between different operating conditions and the preset upper limit loading power of the fuel cell.

[0065] Step S102: comparing the current rated required power and the preset upper limit load power to obtain a comparison result;

[0066] Step S103: Based on the comparison result, determine to match a target energy management strategy from a plurality of preset energy management strategies, wherein the plurality of preset energy management strategies include a power following strategy and a step strategy, wherein the power following strategy indicates that the battery loading power corresponding to the target vehicle follows the target demand power adjustment of the target vehicle, and the step strategy indicates that the battery loading power is output according to the target output power;

[0067] In an embodiment of the present application, based on the comparison result between the current rated demand power and the preset upper limit loading power, a target energy management strategy is matched from a plurality of preset energy management strategies, so as to dynamically adjust the vehicle's energy management strategy based on the vehicle's driving state, thereby improving the economy of the entire vehicle while protecting the life of the fuel cell under the current driving state.

[0068] Step S104: Based on the target energy management strategy, control the battery loading power corresponding to the target vehicle.

[0069] In the embodiment of the present application, the battery loading power corresponding to the target vehicle includes the fuel cell loading power and the lithium battery loading power. Based on the matched target energy management strategy, the target loading power of the fuel cell and / or the target loading power of the lithium battery corresponding to the target vehicle is controlled to adjust the output power of the target vehicle, and in this process, the fuel cell life can be protected and the economy of the whole vehicle can be improved.

[0070] In an optional embodiment, determining, based on the comparison result, to match a target energy management strategy from a plurality of preset energy management strategies includes:

[0071] When the comparison result indicates that the current rated required power is greater than or equal to the preset upper limit load power, the power following strategy is used as the target energy management strategy.

[0072] In an embodiment of the present application, when the comparison result indicates that the current rated demand power of the target vehicle is greater than or equal to the preset upper limit loading power of the fuel cell, it means that the vehicle may be continuously driving under the current road conditions, and the load variation of the vehicle output power is not large. The power following strategy is used as the target energy management strategy to adjust the battery loading power corresponding to the target vehicle to follow the target demand power, thereby improving the efficiency of the fuel cell system, reducing the hydrogen consumption of the entire vehicle, and improving the economy of the fuel cell vehicle.

[0073] Figure 2 This is a schematic diagram of the process of controlling the battery loading power corresponding to the target vehicle provided in the embodiment of the present application. Figure 1 ;like Figure 2 As shown, the target required power is a preset upper limit required power of the target vehicle; and based on the target energy management strategy, controlling the battery loading power corresponding to the target vehicle includes:

[0074] Step S201: obtaining a preset upper limit required power of the target vehicle;

[0075] In the embodiment of the present application, the preset upper limit required power of the target vehicle is the maximum power value required by the vehicle under different driving conditions, that is, the maximum required power of the target vehicle.

[0076] Step S202: determining the current loading power of the fuel cell within a preset time period;

[0077] In the embodiment of the present application, the preset time period is a time period in which the loading power of the fuel cell continuously changes until the loading power of the fuel cell reaches a power value. Optionally, the power value may be a preset upper limit loading power of the fuel cell.

[0078] Step S203: determining a required power difference according to the current loaded power and the preset upper limit required power;

[0079] In the embodiment of the present application, the required power difference is the difference between the preset upper limit required power of the target vehicle and the current loading power of the fuel cell.

[0080] Step S204: on the basis of controlling the fuel cell to use the current loading power as the output power, based on the required power difference, controlling the output power of the lithium battery in the target vehicle.

[0081] In the embodiment of the present application, the current loading power of the fuel cell is determined based on the maximum sustained vehicle speed under different road conditions. When the road conditions on which the target vehicle is continuously traveling are different, the maximum sustained vehicle speed of the target vehicle under different road conditions is different, and the current loading power of the fuel cell changes with the change of the maximum sustained vehicle speed, so the current loading power of the fuel cell is dynamically adjusted. The fuel cell is controlled to output the current loading power corresponding to the specific actual situation, so that the energy provided by the fuel cell can meet the energy required by the specific actual situation of the target vehicle, thereby improving the efficiency of the fuel cell system.

[0082] In an embodiment of the present application, the loading power of the fuel cell and the loading power of the lithium battery are controlled to follow the preset upper limit demand power adjustment of the target vehicle: the fuel cell is controlled to output power with the current loading power, and the current loading power is first continuously changed with the driving of the vehicle, until the current loading power is output power with the preset upper limit loading power of the fuel cell; since the rated demand power of the target vehicle is greater than or equal to the preset upper limit loading power of the fuel cell, the energy provided by the fuel cell to the whole vehicle does not meet the energy required by the vehicle, and the lithium battery is required to make up for it. Therefore, on the basis of controlling the fuel cell to output power with the current loading power, the lithium battery of the target vehicle is controlled to output power with the demand power difference, so that the fuel cell and the lithium battery can provide the energy required by the vehicle for the whole vehicle. Through the above embodiment, most of the power output by the fuel cell is directly output to the vehicle, and a small part of the power output by the fuel cell is used for the cyclic charging and discharging of the lithium battery, which reduces the charging and discharging frequency of the lithium battery, improves the efficiency of the fuel cell system, reduces the hydrogen consumption of the whole vehicle, and improves the economy of the whole vehicle.

[0083] In an optional embodiment, the controlling the battery loading power corresponding to the target vehicle based on the target energy management strategy further includes:

[0084] During the preset time period, controlling the power loading rate of the fuel cell to be a first preset loading rate;

[0085] Wherein, the first preset loading rate is less than or equal to a preset threshold.

[0086] In an embodiment of the present application, within a preset time period, the power loading rate of the fuel cell is controlled to be a first preset loading rate, so that during the process of changing the power load of the fuel cell, the load changing rate is slow to protect the life of the fuel cell.

[0087] In an optional embodiment, determining, based on the comparison result, to match a target energy management strategy from a plurality of preset energy management strategies includes:

[0088] When the comparison result indicates that the current rated demand power is less than the preset upper limit load power, the power following strategy and the step strategy are used as the target energy management strategy.

[0089] In an embodiment of the present application, when the comparison result indicates that the current rated demand power of the target vehicle is less than the preset upper limit loading power of the fuel cell, it means that the vehicle may need to start, accelerate, or stop under the current road conditions, and the load variation of the vehicle output power may be large. The power following strategy and the step strategy are used as the target energy management strategy, so that the battery loading power corresponding to the target vehicle is adjusted according to the target energy management strategy, thereby improving the economy of the entire vehicle while protecting the life of the fuel cell.

[0090] Figure 3 This is a schematic diagram of the process of controlling the battery loading power corresponding to the target vehicle provided in the embodiment of the present application. Figure 2 ;like Figure 3 As shown, the target required power is the current rated required power; and based on the target energy management strategy, controlling the battery loading power corresponding to the target vehicle includes:

[0091] Step S301: obtaining a preset upper limit power requirement of the target vehicle and a remaining power of a lithium battery in the target vehicle;

[0092] In the embodiment of the present application, the preset upper limit required power of the target vehicle is the maximum power value required by the vehicle under different driving conditions, that is, the maximum required power of the target vehicle.

[0093] Step S302: determining a preset output power of the fuel cell corresponding to the remaining power;

[0094] In the embodiment of the present application, in order to better maintain the dynamic balance of the lithium battery power, it is necessary to determine the preset output power of the fuel cell corresponding to the remaining power of the lithium battery. For example, when the remaining power of the lithium battery is 40% of the total power, the preset output power of the fuel cell corresponding to the remaining power of the lithium battery is 150 kilowatts, and the preset output power of the fuel cell is determined according to the actual situation.

[0095] Step S303: controlling the target loading power of the fuel cell to follow the current rated demand power adjustment until the target loading power reaches the current rated demand power;

[0096] In the embodiment of the present application, the target loading power of the fuel cell is controlled to follow the current rated power demand of the target vehicle until the target loading power of the fuel cell reaches the current rated power demand of the target vehicle, which helps to significantly change the power load of the fuel cell. It can also improve the efficiency of the fuel cell, reduce hydrogen consumption, and improve the economy of the fuel cell vehicle.

[0097] Step S304: taking the minimum power among the preset upper limit required power, the preset upper limit load power and the preset output power as the target output power;

[0098] Step S305: Control the target loading power to follow the target output power adjustment so that the target loading power reaches the target output power.

[0099] In the embodiment of the present application, the preset upper limit power demand of the target vehicle, the preset upper limit loading power of the fuel cell and the preset output power of the fuel cell are compared. After the target loading power of the fuel cell is controlled to reach the current rated power demand of the target vehicle, the fuel cell is controlled to output at one or more fixed power points to stabilize the output of the fuel cell. Optionally, the target loading power of the fuel cell is controlled to follow the minimum power adjustment among the preset upper limit power demand of the target vehicle, the preset upper limit loading power of the fuel cell and the preset output power of the fuel cell, so that the target loading power of the fuel cell reaches the minimum power among the preset upper limit power demand of the target vehicle, the preset upper limit loading power of the fuel cell and the preset output power of the fuel cell. At this time, the fuel cell outputs stably at the minimum power among the three. In this way, the dynamic balance of the lithium battery power can be better maintained, and the load change of the fuel cell can be reduced, and the load change of the fuel cell is not frequent, thereby protecting the life of the fuel cell.

[0100] In an optional embodiment, the controlling the battery loading power corresponding to the target vehicle based on the target energy management strategy further includes:

[0101] Controlling the power loading rate of the fuel cell to be a second preset loading rate;

[0102] Wherein, the second preset loading rate is less than or equal to a preset threshold.

[0103] In the embodiment of the present application, the power loading rate of the fuel cell is controlled to be the second preset loading rate, so that the load changing rate is slow during the process of the fuel cell power load changing to protect the life of the fuel cell. Optionally, the first preset loading rate is less than or equal to the second preset loading rate. The first preset loading rate and the second preset loading rate are set according to specific circumstances.

[0104] Figure 4 is a flow chart of another automobile energy management control method provided by an embodiment of the present application; Figure 4 As shown, the method also includes:

[0105] Obtaining the remaining power of the lithium battery in the target vehicle;

[0106] The obtaining of the current rated required power of the target vehicle and the preset upper limit loading power of the fuel cell in the target vehicle comprises:

[0107] When the remaining power is greater than or equal to a first preset power value and less than or equal to a second preset power value, the step of obtaining the current rated demand power of the target vehicle and the preset upper limit loading power of the fuel cell in the target vehicle is performed; wherein the first preset power value is less than the second preset power value.

[0108] In an embodiment of the present application, the remaining power of the lithium battery in the target vehicle is obtained, and based on the remaining power of the lithium battery, it is determined whether the automobile energy management method provided in the embodiment of the present application can be adopted. When the remaining power of the lithium battery is greater than or equal to the first preset power value, and less than or equal to the second preset power value, the automobile energy management method provided in the embodiment of the present application can be adopted to start executing the acquisition of the current rated demand power of the target vehicle and the preset upper limit load power of the fuel cell in the target vehicle. Exemplarily, the first preset power value is 30% of the total power of the lithium battery, and the second preset power value is 90% of the total power of the lithium battery. The first preset power value and the second preset power value are determined according to the specific actual situation.

[0109] In the embodiments of the present application, Figure 4 As shown, when the remaining power of the lithium battery is less than the first preset power value, the target loading power of the fuel cell is controlled to be output according to the preset upper limit loading power of the fuel cell until the remaining power of the lithium battery reaches the third preset power value, wherein the third preset power value is greater than or equal to the first preset power value, and less than or equal to the second preset power value. When the remaining power of the lithium battery is less than the first preset power value, the remaining power of the lithium battery is too low. At this time, in order to avoid affecting the power output of the lithium battery, the target loading power of the fuel cell is controlled to be output at the preset upper limit loading power, so that the fuel cell can provide energy to the target vehicle while also providing it to the lithium battery, charging the lithium battery, and helping the lithium battery to recover power until the remaining power of the lithium battery reaches the third preset power value. Exemplarily, the third preset power value is 35% of the total power of the lithium battery. At this time, the third preset power value is greater than the first preset power value. The remaining power of the lithium battery satisfies the condition that the remaining power of the lithium battery is greater than or equal to the first preset power value, and less than or equal to the second preset power value, and the current rated demand power of the target vehicle and the preset upper limit loading power of the fuel cell in the target vehicle are obtained.

[0110] When the remaining power of the lithium battery is greater than the second preset power value, the target loading power of the fuel cell is controlled to be output according to the preset lower limit loading power of the fuel cell until the remaining power of the lithium battery reaches the fourth preset power value, wherein the fourth preset power value is less than or equal to the second preset power value, and greater than or equal to the first preset power value. When the remaining power of the lithium battery is greater than the second preset power value, the remaining power of the lithium battery is too high. At this time, if the lithium battery continues to be charged, it may cause the lithium battery to explode. Therefore, the target loading power of the fuel cell is controlled to be output to the target vehicle with the preset lower limit loading power to provide energy for the target vehicle, while the energy provided by the fuel cell received by the lithium battery is less, and the power is reduced through the discharge process until the remaining power of the lithium battery reaches the fourth preset power value. Exemplarily, the fourth preset power value is 85% of the total power of the lithium battery. At this time, the fourth preset power value is less than the second preset power value. The remaining power of the lithium battery satisfies the condition that the remaining power of the lithium battery is greater than or equal to the first preset power value, and less than or equal to the second preset power value, and the current rated demand power of the target vehicle and the preset upper limit loading power of the fuel cell in the target vehicle are obtained.

[0111] In an optional embodiment, obtaining the current rated required power of the target vehicle includes:

[0112] Collecting vehicle operating data, target vehicle speed, external ambient air density, and target efficiency value of the target vehicle within a preset time period;

[0113] The current rated required power is determined based on the vehicle operating condition data, the target vehicle speed, the ambient air density outside the vehicle, and the target efficiency value.

[0114] In an embodiment of the present application, the preset duration is the time T days past the current moment, and the preset duration is determined based on actual conditions. The collected vehicle operating data of the target vehicle include the vehicle driving state, the vehicle driving road condition, etc. For example, the vehicle driving state may be the vehicle starting, the vehicle accelerating; the vehicle driving road condition may be the vehicle climbing angle, the vehicle driving route steepness. The collected target vehicle speed includes the vehicle's maximum sustained speed. The collected target efficiency values ​​include the power system mechanical transmission efficiency and the motor electronic control efficiency. Based on the above collected data, the current rated demand power can be determined. For example, according to Determine the power of the vehicle when the vehicle meets the maximum speed requirement within a certain period of time; where η t is the mechanical transmission efficiency of the power system, η m is the motor control efficiency, m is the vehicle mass, f is the rolling resistance coefficient, C D is the air resistance coefficient, A is the cross-sectional area of ​​the vehicle, ρ is the air density, and ν is the maximum sustained speed of the vehicle. Determine the vehicle's power according to the climbing requirement; where η t is the mechanical transmission efficiency of the power system, η m is the motor electronic control efficiency, m is the vehicle mass, f is the rolling resistance coefficient, ν is the vehicle's maximum continuous speed, and α is the vehicle's climbing angle. The two are compared, and the larger one is taken as the current rated demand power.

[0115] In an optional embodiment, obtaining the preset upper limit required power of the target vehicle includes:

[0116] Collecting vehicle operating data, target vehicle speed, external ambient air density, and target efficiency value of the target vehicle within a preset time period;

[0117] The preset upper limit required power is determined based on the vehicle operating condition data, the target vehicle speed, the ambient air density outside the vehicle, and the target efficiency value.

[0118] In an embodiment of the present application, the preset duration is the time T days past the current moment, and the preset duration is determined based on actual conditions. The collected vehicle operating data of the target vehicle include vehicle driving status, vehicle driving road conditions, etc. For example, the vehicle driving status may be vehicle starting, vehicle accelerating; the vehicle driving road conditions may be vehicle climbing angle, vehicle driving route steepness. The collected target vehicle speed includes the vehicle's maximum sustained speed. The collected target efficiency values ​​include the mechanical transmission efficiency of the power system and the motor electronic control efficiency. Based on the above collected data, the preset upper limit required power can be determined. For example, according to Determine the power of the vehicle when the vehicle meets the maximum speed requirement within a certain period of time; where η t is the mechanical transmission efficiency of the power system, η m is the motor control efficiency, m is the vehicle mass, f is the rolling resistance coefficient, C D is the air resistance coefficient, A is the cross-sectional area of ​​the vehicle, ρ is the air density, and ν is the maximum sustained speed of the vehicle. Determine the vehicle's power according to the climbing requirement; where η t is the mechanical transmission efficiency of the power system, η m is the motor control efficiency, m is the vehicle mass, f is the rolling resistance coefficient, ν is the vehicle's maximum continuous speed, and α is the vehicle's climbing angle. Determine the power of the vehicle according to the vehicle driving condition requirements; where, where, η t is the mechanical transmission efficiency of the power system, η m is the motor control efficiency, m is the vehicle mass, f is the rolling resistance coefficient, C Dis the air resistance coefficient, A is the cross-sectional area of ​​the vehicle, ρ is the air density, and ν is the maximum sustained speed of the vehicle. The three are compared and the larger one is taken as the maximum requested power of the vehicle. Since the vehicle has different driving conditions within the preset time, the maximum requested power corresponding to different vehicle conditions within the preset time is obtained, and the average value of the maximum requested power corresponding to different vehicle conditions is taken as the preset upper limit required power.

[0119] In the embodiments of the present application, the automobile energy management control method has certain versatility, is easy to operate, has strong flexibility, and can be applied to different types of vehicles.

[0120] Figure 5 is a structural block diagram of an automobile energy management control system provided by an embodiment of the present application; Figure 5 As shown, the system comprises:

[0121] The data acquisition module 501 is used to acquire the current rated required power of the target vehicle and the preset upper limit loading power of the fuel cell in the target vehicle;

[0122] A data comparison module 502 is used to compare the current rated required power with the preset upper limit load power to obtain a comparison result;

[0123] The energy management strategy matching module 503 is used to determine, based on the comparison result, to match a target energy management strategy from a plurality of preset energy management strategies, wherein the plurality of preset energy management strategies include a power following strategy and a step strategy, wherein the power following strategy indicates that the battery loading power corresponding to the target vehicle follows the target demand power adjustment of the target vehicle; and the step strategy indicates that the battery loading power is output according to the target output power;

[0124] The data processing module 504 is used to control the battery loading power corresponding to the target vehicle based on the target energy management strategy.

[0125] In an embodiment of the present application, the automobile energy management control system provided by the embodiment of the present application determines to match a suitable target energy management strategy from a plurality of preset energy management strategies based on a comparison result between the current rated demand power of the vehicle and the preset upper limit power of the fuel cell in the vehicle. This can improve the economy of the entire vehicle while protecting the life of the fuel cell, and improve the efficiency of the fuel cell system to obtain better vehicle dynamic response.

[0126] In an optional embodiment, the energy management strategy matching module includes:

[0127] The first target energy management strategy matching module is used to use the power following strategy as the target energy management strategy when the comparison result indicates that the current rated required power is greater than or equal to the preset upper limit load power.

[0128] In an optional embodiment, the data processing module includes:

[0129] A first data acquisition unit, used to acquire a preset upper limit required power of the target vehicle;

[0130] A data determination unit, configured to determine a current loading power of the fuel cell within a preset time period; and determine a required power difference according to the current loading power and the preset upper limit required power;

[0131] The first battery loading power control module is used to control the output power of the lithium battery in the target vehicle based on the required power difference on the basis of controlling the fuel cell to use the current loading power as the output power.

[0132] In an optional embodiment, the data processing module further includes:

[0133] The first battery loading rate control module is used to control the power loading rate of the fuel cell to be a first preset loading rate within the preset time period; wherein the first preset loading rate is less than or equal to a preset threshold.

[0134] In an optional embodiment, the energy management strategy matching module includes:

[0135] The second target energy management strategy matching module is used to use the power following strategy and the step strategy as the target energy management strategy when the comparison result indicates that the current rated demand power is less than the preset upper limit load power.

[0136] In an optional embodiment, the data processing module includes:

[0137] A second data acquisition unit, used to acquire a preset upper limit required power of the target vehicle and a remaining power of a lithium battery in the target vehicle;

[0138] a power determination unit, configured to determine a preset output power of the fuel cell corresponding to the remaining power;

[0139] A second battery loading power control unit, used to control the target loading power of the fuel cell to follow the current rated required power adjustment until the target loading power reaches the current rated required power;

[0140] The third battery loading power control unit is used to take the minimum power among the preset upper limit demand power, the preset upper limit loading power and the preset output power as the target output power; control the target loading power to follow the target output power adjustment so that the target loading power reaches the target output power.

[0141] In an optional embodiment, the data processing module further includes:

[0142] The second battery loading rate control module is used to control the power loading rate of the fuel cell to be a second preset loading rate; wherein the second preset loading rate is less than or equal to a preset threshold.

[0143] In an optional embodiment, the data acquisition module is also used to obtain the remaining power of the lithium battery in the target vehicle; when the remaining power is greater than or equal to a first preset power value and less than or equal to a second preset power value, the current rated demand power of the target vehicle and the preset upper limit loading power of the fuel cell in the target vehicle are obtained; wherein the first preset power value is less than the second preset power value.

[0144] An embodiment of the present application also provides an automobile energy management control device, which includes a processor and a memory, in which at least one instruction, at least one program, code set or instruction set is stored, and at least one instruction, at least one program, code set or instruction set is loaded and executed by the processor to implement the above-mentioned automobile energy management control method.

[0145] An embodiment of the present application also provides a computer-readable storage medium, which stores at least one instruction, at least one program, code set or instruction set, and the at least one instruction, at least one program, code set or instruction set is loaded and executed by a processor to implement the above-mentioned automobile energy management control method.

[0146] It can be seen from the embodiments provided by the present application that the present application determines to match a suitable target energy management strategy from a plurality of preset energy management strategies based on the comparison result of the current rated demand power of the vehicle and the preset upper limit power of the fuel cell in the vehicle, thereby being able to improve the economy of the entire vehicle while protecting the life of the fuel cell, and improve the efficiency of the fuel cell system to obtain better vehicle dynamic response.

[0147] It should be noted that the above-mentioned sequence of the embodiments of the present application is for description only and does not represent the advantages and disadvantages of the embodiments. The above-mentioned specific embodiments of this specification are described. Other embodiments are within the scope of the attached claims. In some cases, the actions or steps recorded in the claims can be performed in an order different from that in the embodiments and still achieve the desired results. In addition, the processes depicted in the drawings do not necessarily require the specific order or continuous order shown to achieve the desired results. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0148] Each embodiment in this specification is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the device and server embodiments, since they are basically similar to the method embodiments, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiments.

[0149] A person skilled in the art will understand that all or part of the steps to implement the above embodiments may be accomplished by hardware or by instructing related hardware through a program, and the program may be stored in a computer-readable storage medium, and the above-mentioned storage medium may be a read-only memory, a disk or an optical disk, etc.

[0150] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A method for controlling automobile energy management, characterized in that: The method comprises: Obtaining a current rated required power of a target vehicle and a preset upper limit loading power of a fuel cell in the target vehicle; Comparing the current rated required power with the preset upper limit load power to obtain a comparison result; Based on the comparison result, determining to match a target energy management strategy from a plurality of preset energy management strategies, wherein the plurality of preset energy management strategies include a power following strategy and a step strategy, wherein the power following strategy indicates that the battery loading power corresponding to the target vehicle follows the target demand power adjustment of the target vehicle, and the step strategy indicates that the battery loading power is output according to the target output power; Based on the target energy management strategy, the battery loading power corresponding to the target vehicle is controlled.

2. The automobile energy management control method according to claim 1, characterized in that: The determining, based on the comparison result, to match a target energy management strategy from a plurality of preset energy management strategies comprises: When the comparison result indicates that the current rated required power is greater than or equal to the preset upper limit load power, the power following strategy is used as the target energy management strategy.

3. The automobile energy management control method according to claim 2, characterized in that: The target required power is a preset upper limit required power of the target vehicle; and the controlling of the battery loading power corresponding to the target vehicle based on the target energy management strategy includes: Obtaining a preset upper limit required power of the target vehicle; Determining a current loading power of the fuel cell within a preset time period; Determining a required power difference according to the current loaded power and the preset upper limit required power; On the basis of controlling the fuel cell to use the current loaded power as the output power, the output power of the lithium battery in the target vehicle is controlled based on the required power difference.

4. The automobile energy management control method according to claim 3, characterized in that: The controlling the battery loading power corresponding to the target vehicle based on the target energy management strategy further includes: During the preset time period, controlling the power loading rate of the fuel cell to be a first preset loading rate; Wherein, the first preset loading rate is less than or equal to a preset threshold.

5. The automobile energy management control method according to claim 1, characterized in that: The determining, based on the comparison result, to match a target energy management strategy from a plurality of preset energy management strategies comprises: When the comparison result indicates that the current rated demand power is less than the preset upper limit load power, the power following strategy and the step strategy are used as the target energy management strategy.

6. The automobile energy management control method according to claim 5, characterized in that: The target required power is the current rated required power; and the controlling the battery loading power corresponding to the target vehicle based on the target energy management strategy includes: Obtaining a preset upper limit power requirement of the target vehicle and a remaining power of a lithium battery in the target vehicle; determining a preset output power of the fuel cell corresponding to the remaining power; Controlling the target loading power of the fuel cell to follow the current rated demand power adjustment until the target loading power reaches the current rated demand power; The minimum power among the preset upper limit required power, the preset upper limit loaded power and the preset output power is taken as the target output power; The target loading power is controlled to follow the target output power so that the target loading power reaches the target output power.

7. The automobile energy management control method according to claim 6, characterized in that: The controlling the battery loading power corresponding to the target vehicle based on the target energy management strategy further includes: Controlling the power loading rate of the fuel cell to be a second preset loading rate; Wherein, the second preset loading rate is less than or equal to a preset threshold.

8. The automobile energy management control method according to any one of claims 1 to 7, characterized in that: The method further comprises: Obtaining the remaining power of the lithium battery in the target vehicle; The obtaining of the current rated required power of the target vehicle and the preset upper limit loading power of the fuel cell in the target vehicle comprises: When the remaining power is greater than or equal to a first preset power value and less than or equal to a second preset power value, the step of obtaining the current rated demand power of the target vehicle and the preset upper limit loading power of the fuel cell in the target vehicle is performed; wherein the first preset power value is less than the second preset power value.

9. The automobile energy management control method according to any one of claims 1 to 7, characterized in that: The obtaining of the current rated required power of the target vehicle includes: Collecting vehicle operating data, target vehicle speed, external ambient air density, and target efficiency value of the target vehicle within a preset time period; The current rated required power is determined based on the vehicle operating condition data, the target vehicle speed, the ambient air density outside the vehicle, and the target efficiency value.

10. The automobile energy management control method according to any one of claims 1 to 7, characterized in that: The step of obtaining the preset upper limit required power of the target vehicle includes: Collecting vehicle operating data, target vehicle speed, external ambient air density, and target efficiency value of the target vehicle within a preset time period; The preset upper limit required power is determined based on the vehicle operating condition data, the target vehicle speed, the ambient air density outside the vehicle, and the target efficiency value.

11. An automobile energy management control system, characterized in that: The system comprises: A data acquisition module, used to acquire the current rated required power of the target vehicle and the preset upper limit loading power of the fuel cell in the target vehicle; A data comparison module, used for comparing the current rated required power with the preset upper limit loading power to obtain a comparison result; An energy management strategy matching module is used to determine, based on the comparison result, to match a target energy management strategy from a plurality of preset energy management strategies, wherein the plurality of preset energy management strategies include a power following strategy and a step strategy, wherein the power following strategy indicates that the battery loading power corresponding to the target vehicle follows the target demand power adjustment of the target vehicle; and the step strategy indicates that the battery loading power is output according to the target output power; A data processing module is used to control the battery loading power corresponding to the target vehicle based on the target energy management strategy.

12. An automobile energy management control device, characterized in that: The device includes a processor and a memory, wherein the memory stores at least one instruction, at least one program, a code set or an instruction set, and the at least one instruction, the at least one program, the code set or the instruction set is loaded and executed by the processor to implement the automobile energy management control method as described in any one of claims 1 to 10.

13. A computer-readable storage medium, characterized in that: The storage medium stores at least one instruction, at least one program, a code set or an instruction set, and the at least one instruction, the at least one program, the code set or the instruction set is loaded and executed by the processor to implement the automobile energy management control method as described in any one of claims 1 to 10.

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