Energy management method, vehicle and storage medium

Abstract

The invention provides an energy management method, a vehicle and a storage medium, and belongs to the technical field of automobiles, the method comprises the following steps: determining that a downhill road section exists in a predicted driving path of the vehicle; according to the road section information of the downhill road section, the recovered electric quantity of the vehicle is determined, and the recovered electric quantity is the electric quantity obtained by energy recovery when the vehicle runs on the downhill road section; if the residual capacity of the power battery of the vehicle does not meet the storage requirement for storing the recycled electric quantity, determining a target distance according to the residual capacity and the recycled electric quantity; and when the distance between the position of the vehicle and the starting point of the downhill road section is not larger than the target distance, the energy output power of the power battery is increased. Before the vehicle enters the downhill road section, the output power of the power battery is increased, so that the power battery can have enough capacity to store recycled electric quantity obtained by downhill, energy waste caused by the fact that energy cannot be recycled after the power battery is fully charged is avoided, the energy utilization rate is improved, and the economical efficiency of the vehicle is optimized.

Description

Technical Field

[0001] The present application belongs to the field of automobile technology, and in particular relates to an energy management method, a vehicle, and a storage medium. Background Art

[0002] A fuel cell system generates electricity through an electrochemical reaction between air and hydrogen. With the advancement of automotive technology, the combination of power batteries and fuel cells as a vehicle's power source for driving and braking has become a key development direction in engine technology. During braking, some energy is typically recovered and stored as electricity in the power battery.

[0003] In related technologies, the combination of high-power fuel cells and small-capacity, high-rate power batteries has gradually become the choice of most automobile manufacturers due to its advantages of low hydrogen consumption, strong power and good adaptability.

[0004] However, the small capacity of the power battery will cause the power battery to be fully charged too early during braking, and energy recovery will no longer be possible, resulting in energy waste. Therefore, there is an urgent need for a method to manage the energy of the power battery and fuel cell during braking. Summary of the Invention

[0005] The purpose of this application is to provide an energy management method, a vehicle and a storage medium, aiming to solve the problem of small capacity and easy charging of power batteries in traditional fuel vehicles.

[0006] A first aspect of an embodiment of the present application provides an energy management method, the method comprising:

[0007] Determining that there is a downhill section in the predicted driving path of the vehicle;

[0008] determining, based on the road section information of the downhill road section, a regenerated amount of the vehicle, wherein the regenerated amount is the amount of energy recovered when the vehicle travels on the downhill road section;

[0009] If the remaining capacity of the power battery of the vehicle does not meet the storage requirement for storing the recovered power, determining a target distance based on the remaining capacity and the recovered power;

[0010] When the distance between the position of the vehicle and the starting point of the downhill section is not greater than the target distance, the energy output power of the power battery is increased.

[0011] In some embodiments, determining that there is a downhill section in the predicted driving path of the vehicle includes:

[0012] Determining, based on the historical driving data of the vehicle, a location of a downhill road section existing in the historical driving data;

[0013] Obtaining a predicted driving path of the vehicle based on the current position of the vehicle;

[0014] If the predicted driving path includes the position of the downhill section, it is determined that there is a downhill section in the predicted driving path of the vehicle.

[0015] In some embodiments, the road segment information includes a road segment identifier of the road segment;

[0016] The determining of the regenerative power of the vehicle according to the road section information of the downhill road section includes:

[0017] determining, according to the road section identifier of the downhill road section, historical energy recovery data of the downhill road section corresponding to the road section identifier from historical driving data of the vehicle;

[0018] The amount of energy recovered by the vehicle on the downhill section is determined from the historical energy recovery data.

[0019] In some embodiments, before obtaining the predicted driving path of the vehicle based on the current position of the vehicle, the method further includes:

[0020] In response to the vehicle traveling to a downhill section, recording a starting position of the downhill section;

[0021] During downhill driving, the amount of regenerative power generated by the vehicle on the downhill section is recorded;

[0022] The historical driving data of the vehicle is generated based on the starting position of the downhill section, the regenerated power and the section identifier of the downhill section.

[0023] In some embodiments, determining that there is a downhill section in the predicted driving path of the vehicle includes:

[0024] Determine the location of the downhill road section marked in the map information;

[0025] Obtaining a predicted driving path of the vehicle based on the current position of the vehicle;

[0026] If the predicted driving path includes the position of the downhill section, it is determined that there is a downhill section in the predicted driving path of the vehicle.

[0027] In some embodiments, the road segment information includes the length and slope of the road segment;

[0028] The determining of the regenerative power of the vehicle according to the road section information of the downhill road section includes:

[0029] The amount of recovered electricity generated by the downhill section is predicted according to the length and the slope of the downhill section.

[0030] In some embodiments, determining the target distance based on the remaining capacity and the recovered power includes:

[0031] determining the amount of electricity required to be consumed by the power battery based on the remaining capacity and the recovered electricity, where the amount of electricity required to be consumed by the power battery is the amount of electricity required to be consumed from the remaining electricity of the power battery when the power battery meets storage conditions for storing the recovered electricity;

[0032] The target distance is determined according to the power consumption required by the power battery and the increased energy output power of the power battery.

[0033] In some embodiments, after increasing the energy output power of the power battery, the method further includes:

[0034] When the vehicle is traveling on a downhill section, if the remaining power of the power battery is greater than a preset power, the temperature maintaining component of the fuel cell is started to consume the energy obtained by energy recovery.

[0035] A second aspect of the embodiments of the present application provides an energy management device, the device comprising:

[0036] a first determining unit, configured to determine whether a downhill section exists in the predicted driving path of the vehicle;

[0037] a second determining unit, configured to determine a regenerated amount of the vehicle based on the road section information of the downhill road section, wherein the regenerated amount is an amount of energy recovered by the vehicle when traveling on the downhill road section;

[0038] a third determining unit, configured to determine a target distance based on the remaining capacity and the reclaimed power if the remaining capacity of the power battery of the vehicle does not meet a storage requirement for storing the reclaimed power;

[0039] The adjustment unit is configured to increase the energy output power of the power battery when the distance between the position of the vehicle and the starting point of the downhill section is not greater than the target distance.

[0040] In some embodiments, the first determination unit is used to determine the location of a downhill section in the historical driving data of the vehicle based on the historical driving data of the vehicle; obtain the predicted driving path of the vehicle based on the current position of the vehicle; if the predicted driving path includes the location of the downhill section, determine that there is a downhill section in the predicted driving path of the vehicle.

[0041] In some embodiments, the road segment information includes a road segment identifier of the road segment;

[0042] The second determination unit is used to determine the historical energy recovery data of the downhill section corresponding to the section identifier from the historical driving data of the vehicle based on the section identifier of the downhill section; and determine the amount of recovered electricity of the vehicle on the downhill section from the historical energy recovery data.

[0043] In some embodiments, the apparatus further comprises:

[0044] a recording unit, configured to record a starting position of the downhill section in response to the vehicle traveling to the downhill section;

[0045] The recording unit is used to record the amount of regenerated electricity generated by the vehicle on the downhill section during downhill driving;

[0046] A generating unit is used to generate the historical driving data of the vehicle based on the starting position of the downhill section, the regenerated power and the section identifier of the downhill section.

[0047] In some embodiments, the first determination unit is used to determine the position of a downhill section marked in the map information; obtain a predicted driving path of the vehicle based on the current position of the vehicle; if the predicted driving path includes the position of the downhill section, determine that there is a downhill section in the predicted driving path of the vehicle.

[0048] In some embodiments, the road segment information includes the length and slope of the road segment;

[0049] The second determining unit is configured to predict the amount of regenerated electricity generated by the downhill section according to the length and slope of the downhill section.

[0050] In some embodiments, the third determination unit is used to determine the amount of electricity required to be consumed by the power battery based on the remaining capacity and the recovered electricity, where the amount of electricity required to be consumed by the power battery is the amount of electricity that needs to be consumed from the remaining electricity of the power battery when the power battery meets the storage conditions for storing recovered electricity; and the target distance is determined based on the amount of electricity required to be consumed by the power battery and the increased energy output power of the power battery.

[0051] In some embodiments, the apparatus further comprises:

[0052] The component control unit is used to start the temperature maintenance component of the fuel cell to consume the energy obtained by energy recovery when the vehicle is traveling on a downhill section if the remaining power of the power battery is greater than a preset power.

[0053] A third aspect of an embodiment of the present application provides a vehicle, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the energy management method described above when executing the computer program.

[0054] A fourth aspect of an embodiment of the present application provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the energy management method described above is implemented.

[0055] Compared with the prior art, the embodiments of the present invention have the following beneficial effects:

[0056] In an embodiment of the present application, by predicting whether there is a downhill section in the vehicle's driving path, when there is a downhill section in the vehicle's driving path, based on the section information of the downhill section, it is predicted that when the vehicle passes through the downhill section, the recovered electricity obtained due to energy recovery, when the remaining capacity of the power battery does not meet the storage demand for storing the recovered electricity, before the vehicle enters the downhill section, the output power of the power battery is increased so that before the vehicle enters the downhill section, the power battery can have sufficient capacity to store the recovered electricity obtained by the downhill section, thereby avoiding energy waste caused by the inability to recover energy after the power battery is fully charged, thereby improving energy utilization and optimizing the economy of the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0057] Figure 1 A schematic flow chart of an energy management method provided by an exemplary embodiment is shown;

[0058] Figure 2 A schematic flow chart of an energy management method provided by an exemplary embodiment is shown;

[0059] Figure 3 A schematic flow chart of an energy management method provided by an exemplary embodiment is shown;

[0060] Figure 4 A schematic flow chart of an energy management method provided by an exemplary embodiment is shown;

[0061] Figure 5 A schematic flow chart of an energy management method provided by an exemplary embodiment is shown;

[0062] Figure 6 A schematic structural diagram of an energy management device provided by an exemplary embodiment is shown;

[0063] Figure 7 It is a schematic structural diagram of a vehicle provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0064] In order to make the technical problems, technical solutions and beneficial effects to be solved by this application more clearly understood, this application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0065] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0066] A fuel cell system generates electricity through an electrochemical reaction between air and hydrogen. With the advancement of automotive technology, the combination of power batteries and fuel cells as a vehicle's power source, driving and braking, has become a key development direction in engine technology. The vehicle control logic for vehicles powered by power batteries and fuel cells is similar to that of hybrid vehicles, but other components, aside from the fuel cell, are essentially the same as those of pure electric vehicles. Therefore, during braking, some energy is typically recovered and stored as electricity in the power battery.

[0067] In some embodiments, with advancements in fuel cell technology and reduced costs, the combination of high-power fuel cells and small-capacity, high-rate power batteries has gradually become the preferred choice of most automakers due to its low hydrogen consumption, high power, and adaptability. However, during braking, since energy recovery stores the recovered energy in the power battery, if the power battery capacity is small, it will quickly fill up, rendering energy recovery impossible. This means that the vehicle cannot brake via the electric motor, but instead relies entirely on mechanical braking.

[0068] In the above embodiment, when the power battery is too high, the vehicle cannot be braked by the motor, and the braking force is provided by the mechanical brake. In long-term downhill conditions, when the braking force is provided by the mechanical brake, the braking mechanism is prone to high-temperature failure, resulting in vehicle safety issues. In addition, in order to improve vehicle energy consumption under long-term downhill conditions, the current vehicle control logic generally shuts down the fuel cell, but the vehicle is still running. Therefore, affected by the external environment (for example, external temperature, wind, etc.), the temperature of the fuel cell thermal management system will decrease during vehicle driving. When the temperature is low, it takes time to heat up the fuel cell before it can continue to output high power, thus affecting the vehicle's power response. In addition, when there are many long downhill sections in the vehicle's driving route, it will continue to affect the vehicle's braking performance and shorten the service life of the braking mechanism.

[0069] In summary, the small capacity of the power battery will cause the power battery to be fully charged too early during braking, and energy recovery will no longer be possible. Therefore, there is an urgent need for a method to manage the energy of the power battery and fuel cell during braking.

[0070] In order to solve the above technical problems, the embodiments of the present application provide an energy management method, a vehicle, and a storage medium. By predicting the downhill section in the vehicle's driving path, the remaining power (State of Charge, SOC) of the vehicle's power battery is judged in advance, and based on the remaining power of the power battery, it is determined whether the remaining capacity of the power battery meets the capacity required to store the recovered power when the vehicle passes through the downhill section. If it does not meet the requirements, the vehicle adjusts the output power ratio of the power battery and the fuel cell to increase the output power of the power battery to ensure that when the vehicle enters the downhill section, the power battery has sufficient capacity to store the recovered power obtained by energy recovery. In this way, during the energy recovery process, the power battery will not be fully charged, thereby avoiding the problem of stopping energy recovery due to the full power battery in the downhill section and preventing energy waste.

[0071] The energy management method provided by the embodiment of this application is described in detail below. Figure 1 , which shows a flow chart of an energy management method provided by an embodiment of the present application. As an example and not a limitation, the method is applied in a vehicle.

[0072] S101, the vehicle determines that there is a downhill section in the predicted driving path of the vehicle.

[0073] The predicted driving path is the path the vehicle may travel. While the vehicle is driving, the predicted driving path the vehicle will soon travel is predicted based on the vehicle's direction of travel. In some embodiments, the vehicle determines the vehicle's driving route based on a navigation map based on the navigation start and end locations input by the user, thereby obtaining the vehicle's predicted driving path. In some embodiments, the vehicle determines the vehicle's predicted driving path based on the vehicle's historical driving data. For example, if a demonstration operation vehicle has a relatively fixed driving route, the vehicle will determine this fixed driving route as the vehicle's predicted driving path.

[0074] It should be noted that the predicted driving path can be the entire path or a portion of the path of the vehicle's current travel, and this is not specifically limited in the present embodiment. Furthermore, the vehicle can determine whether there is at least one downhill section in the predicted driving path, or the vehicle can determine whether there is a downhill section in the predicted driving path within a preset distance from the vehicle's current position. The preset distance can be set as needed and is not specifically limited in the present embodiment. For example, the preset distance can be 1 km, 1.5 km, or 2 km.

[0075] When the vehicle determines that there is no downhill section in the predicted driving path, the vehicle maintains the current driving state. When the vehicle determines that there is a downhill section in the predicted driving path, the vehicle executes step S102.

[0076] S102: The vehicle determines the amount of regenerated electricity of the vehicle based on the road section information of the downhill section. The regenerated electricity is the amount of electricity obtained by energy recovery when the vehicle travels on the downhill section.

[0077] When the vehicle is on a downhill road, it does not need to be driven, but instead it is braked. This process triggers energy recovery and obtains recovered electricity, which is then stored in the power battery.

[0078] In some embodiments, while driving, the vehicle records historical driving data, which includes regenerated energy generated when the vehicle travels on downhill sections. Accordingly, the section information for the downhill section includes the location of the exit section. In this step, based on the location of the downhill section, the vehicle obtains the regenerated energy for the downhill section corresponding to the location from the historical driving data.

[0079] In some embodiments, the regenerated energy is positively correlated with the length and slope of the downhill section. The downhill section information includes the location of the downhill section. In this step, the vehicle obtains the length and slope of the downhill section from map information based on the location of the downhill section, and predicts the regenerated energy for the downhill section based on the length and slope of the downhill section.

[0080] The vehicle also obtains the current remaining power battery charge (State of Charge, SOC) and determines the remaining capacity of the power battery based on the remaining power battery charge. If the remaining capacity of the power battery is sufficient to store the reclaimed power, the vehicle continues to operate normally and subsequent steps are not performed. If the remaining capacity of the power battery does not meet the storage requirements for the reclaimed power, step S103 is performed.

[0081] S103: If the remaining capacity of the vehicle's power battery does not meet the storage requirement for storing the recovered power, the vehicle determines a target distance based on the remaining capacity and the recovered power.

[0082] The remaining capacity of the vehicle's power battery does not meet the storage requirement for the reclaimed energy, meaning that the remaining capacity of the battery is less than the capacity required to store the reclaimed energy. Therefore, before the vehicle enters a downhill section, it is necessary to deplete some of the power battery's capacity to meet the storage requirement for the reclaimed energy. In this embodiment of the present application, when the remaining capacity of the vehicle's power battery does not meet the storage requirement for the reclaimed energy, the vehicle executes the energy management strategy provided in this embodiment of the present application, starting from a position at a target distance from the downhill section.

[0083] The target distance can be determined based on the current power level of the power battery and the increased energy output power of the power battery. Figure 2 , the process can be implemented by the following steps S1031-S1032, including:

[0084] S1031, the vehicle determines the amount of electricity required to be consumed by the power battery based on the remaining capacity and the recovered electricity. The amount of electricity required to be consumed by the power battery is the amount of electricity required to be consumed from the remaining electricity of the power battery when the power battery meets the storage conditions for storing the recovered electricity.

[0085] Based on the recovered power, the vehicle determines the battery capacity required by the power battery to store the recovered power. The vehicle determines the required battery capacity of the power battery to be released based on the power battery's maximum capacity, remaining capacity, and the battery capacity required to store the recovered power. Furthermore, the required power consumption of the power battery is determined based on the required battery capacity and the power battery's storage efficiency.

[0086] S1032: The vehicle determines the target distance based on the power consumption of the power battery and the increased energy output power of the power battery.

[0087] The increased energy output power of the power battery is the preset energy output power of the power battery after the output power is increased. The increased energy output power can be set as needed. In the embodiment of the present application, the increased energy output power is not specifically limited.

[0088] S104: When the distance between the position of the vehicle and the starting point of the downhill section is not greater than the target distance, the vehicle increases the energy output power of the power battery.

[0089] The vehicle detects its position and obtains the starting point of the downhill section. The distance between the vehicle and the starting point of the downhill section is determined based on the distance between the vehicle's position and the starting point of the downhill section. As the vehicle travels, the distance between the vehicle's position and the starting point of the downhill section gradually decreases. When the distance between the vehicle's position and the starting point of the downhill section is detected to be equal to the target distance, an energy management strategy is initiated to increase the energy output of the power battery.

[0090] It should be noted that, to maintain normal vehicle operation, when the vehicle increases the power battery's energy output, it also reduces the fuel cell's energy output, so that the vehicle's total output power varies within the permitted range. The increase in the power battery's energy output and the decrease in the fuel cell's energy output can be set as needed and are not specifically limited in the present embodiments.

[0091] When the vehicle reaches a point equal to the target distance from the starting point of the downhill section, the power battery's energy output power begins to increase. When the vehicle reaches a point less than the target distance from the starting point of the downhill section, the adjusted power battery output power is maintained. During driving, the remaining power battery charge is monitored in real time, and the power battery output power is adjusted based on the remaining charge and the distance from the starting point of the downhill section to ensure that the power battery has sufficient remaining capacity before the vehicle enters the downhill section and to prevent the power battery from running low and causing a power outage.

[0092] In an embodiment of the present application, by predicting whether there is a downhill section in the vehicle's driving path, when there is a downhill section in the vehicle's driving path, based on the section information of the downhill section, it is predicted that when the vehicle passes through the downhill section, the recovered electricity obtained due to energy recovery, when the remaining capacity of the power battery does not meet the storage demand for storing the recovered electricity, before the vehicle enters the downhill section, the output power of the power battery is increased so that before the vehicle enters the downhill section, the power battery can have sufficient capacity to store the recovered electricity obtained by the downhill section, thereby avoiding energy waste caused by the inability to recover energy after the power battery is fully charged, thereby improving energy utilization and optimizing the economy of the vehicle.

[0093] A vehicle can determine whether a predicted route includes a downhill section in a variety of ways. In some embodiments, the vehicle determines whether a predicted route includes a downhill section based on historical driving data. In some embodiments, the vehicle determines whether a predicted route includes a downhill section based on downhill sections marked in map information. The energy management methods provided by embodiments of the present application are described below based on different scenarios.

[0094] The first method is to determine whether there is a downhill section in the vehicle's predicted driving path through historical driving data. Figure 3 , which shows a flow chart of an energy management method provided by an embodiment of the present application. As an example and not a limitation, the method is applied in a vehicle.

[0095] S301: The vehicle determines the location of a downhill section in the historical driving data based on the historical driving data of the vehicle.

[0096] This historical driving data is data generated during the vehicle's historical driving. While driving, the vehicle records its driving trajectory. When encountering a downhill section, the vehicle records information such as the starting position of the downhill section and the amount of regenerated energy generated during the downhill section. This information is recorded as the vehicle's historical driving data. Accordingly, prior to this step, in response to the vehicle reaching a downhill section, the vehicle records the starting position of the downhill section; during the downhill section, the vehicle records the amount of regenerated energy generated by the vehicle on the downhill section; and based on the starting position of the downhill section, the amount of regenerated energy, and the section identifier of the downhill section, the vehicle's historical driving data is generated.

[0097] The road section identifier may be a road section number generated by the vehicle according to the road section, or the road section identifier may be a location of a downhill road section, etc. In the embodiment of the present application, no specific limitation is made to this.

[0098] One thing that needs to be explained is that for the same downhill section that the vehicle passes through multiple times, the vehicle can store the average of the historical driving data such as the starting position and recovered power recorded multiple times through the downhill section, thereby improving the accuracy of the historical driving data.

[0099] S302: The vehicle obtains a predicted driving path of the vehicle based on the current position of the vehicle.

[0100] The vehicle determines a predicted driving path based on the vehicle's current location and the vehicle's destination. Alternatively, the vehicle determines a path within a preset range from the vehicle's current location as the vehicle's predicted driving path. This is not specifically limited in the embodiments of the present application.

[0101] S303: If the predicted driving path includes the location of the downhill section, the vehicle determines that there is a downhill section in the predicted driving path of the vehicle.

[0102] The vehicle compares the predicted driving path with the starting position of the downhill section in the historical driving data. If the predicted driving path includes the starting position of the downhill section in the historical driving data, it is determined that there is a downhill section in the predicted driving path of the vehicle.

[0103] S304: The vehicle determines, based on the road section identifier of the downhill road section, historical energy recovery data of the downhill road section corresponding to the road section identifier from the historical driving data of the vehicle.

[0104] The vehicle reads the corresponding historical driving data according to the road section identifier of the downhill road section, thereby determining the historical energy recovery data from the historical driving data, wherein the historical energy recovery data includes the amount of recovered electricity obtained when the vehicle travels through the downhill road section.

[0105] It is important to note that when the same road segment identifier corresponds to multiple historical driving data sets, the vehicle can determine the historical energy recovery data from the historical driving data set closest to the current one from the multiple driving data sets. Alternatively, the vehicle can average the energy recovery data from the multiple historical driving data sets to obtain the historical energy recovery data set.

[0106] S305: The vehicle determines the amount of energy recovered by the vehicle on the downhill section from the historical energy recovery data.

[0107] S306 : If the remaining capacity of the power battery of the vehicle does not meet the storage requirement for storing the recovered power, determine a target distance based on the remaining capacity and the recovered power.

[0108] The principle of this step is the same as that of step S103 and will not be repeated here.

[0109] S307 : When the distance between the position of the vehicle and the starting point of the downhill section is not greater than the target distance, increase the energy output power of the power battery.

[0110] The principle of this step is the same as that of step S104 and will not be repeated here.

[0111] In an embodiment of the present application, by predicting whether there is a downhill section in the vehicle's driving path, when there is a downhill section in the vehicle's driving path, based on the section information of the downhill section, it is predicted that when the vehicle passes through the downhill section, the recovered electricity obtained due to energy recovery, when the remaining capacity of the power battery does not meet the storage demand for storing the recovered electricity, before the vehicle enters the downhill section, the output power of the power battery is increased so that before the vehicle enters the downhill section, the power battery can have sufficient capacity to store the recovered electricity obtained by the downhill section, thereby avoiding energy waste caused by the inability to recover energy after the power battery is fully charged, thereby improving energy utilization and optimizing the economy of the vehicle.

[0112] In addition, by recording historical driving data, the recovered electricity of the vehicle is determined, and by drawing on historical experience, the accuracy of the determined recovered electricity is guaranteed.

[0113] The second method is to determine whether there is a downhill section in the predicted driving route based on the downhill sections marked in the map information. Figure 4 , which shows a flow chart of an energy management method provided by an embodiment of the present application. As an example and not a limitation, the method is applied in a vehicle.

[0114] S401: The vehicle determines the location of the downhill section marked in the map information.

[0115] When marking the map information, the path where the downhill section exists is marked in the map information. In this step, the vehicle obtains the map information where the location of the downhill section is marked.

[0116] S402: The vehicle obtains a predicted driving path of the vehicle based on the current position of the vehicle.

[0117] The principle of this step is the same as that of step S302 and will not be repeated here.

[0118] S403: If the predicted driving path includes the location of the downhill section, the vehicle determines that there is a downhill section in the predicted driving path of the vehicle.

[0119] The vehicle compares the predicted driving path with the starting position of the downhill section in the map information. If the predicted driving path includes the starting position of the downhill section in the map information, it is determined that there is a downhill section in the predicted driving path of the vehicle.

[0120] S404: The vehicle predicts the amount of regenerated electricity generated by the downhill section based on the length and slope of the downhill section.

[0121] The regenerated energy is positively correlated with the length and slope of the downhill section. Prior to this step, the vehicle's regenerated energy can be calibrated with the length and slope of the downhill section to obtain a corresponding relationship between the regenerated energy and the length and slope of the downhill section. In this step, the vehicle reads the regenerated energy corresponding to the length and slope of the downhill section from this corresponding relationship.

[0122] S405 : If the remaining capacity of the power battery of the vehicle does not meet the storage requirement for storing the recovered power, determine a target distance based on the remaining capacity and the recovered power.

[0123] The principle of this step is the same as that of step S103 and will not be repeated here.

[0124] S406 : When the distance between the position of the vehicle and the starting point of the downhill section is not greater than the target distance, increasing the energy output power of the power battery.

[0125] The principle of this step is the same as that of step S104 and will not be repeated here.

[0126] In an embodiment of the present application, by predicting whether there is a downhill section in the vehicle's driving path, when there is a downhill section in the vehicle's driving path, based on the section information of the downhill section, it is predicted that when the vehicle passes through the downhill section, the recovered electricity obtained due to energy recovery, when the remaining capacity of the power battery does not meet the storage demand for storing the recovered electricity, before the vehicle enters the downhill section, the output power of the power battery is increased so that before the vehicle enters the downhill section, the power battery can have sufficient capacity to store the recovered electricity obtained by the downhill section, thereby avoiding energy waste caused by the inability to recover energy after the power battery is fully charged, thereby improving energy utilization and optimizing the economy of the vehicle.

[0127] Moreover, by marking the position, length and slope of the downhill section on the map, the energy control strategy provided by the embodiment of the present application can be adopted even if the vehicle passes through the downhill section for the first time, thereby improving energy utilization and optimizing the economy of the vehicle.

[0128] Due to the variety of vehicle driving conditions, different road conditions may cause inaccurate prediction of the vehicle's recovered power, which in turn may cause the vehicle to still have a problem of too high power in the power battery during the downhill process. In order to avoid this situation, the present application also provides an energy control method, including: when the vehicle is traveling on a downhill section, if the remaining power of the power battery is greater than the preset power, starting the temperature maintenance component of the fuel cell to consume the energy obtained by energy recovery.

[0129] The temperature maintaining component may be a plurality of high power consumption components existing in the fuel cell, for example, at least one of an air compressor, a semiconductor heating element (Positive Temperature Coefficient, PTC), a water pump or a cooling fan. Figure 5 When the vehicle reaches a downhill section, the remaining battery charge is determined. If the remaining power battery charge is less than a preset charge, the system determines that the power battery can still be charged, and the vehicle performs brake energy recovery to charge the power battery. If the remaining power battery charge is not less than the preset charge, the system determines that the power battery is nearly fully charged, and the temperature maintenance components within the fuel cell system begin to operate, dissipating braking energy.

[0130] The temperature-maintaining components within the fuel cell include an air compressor. A back-pressure valve in the air path works in conjunction with the compressor to deliver air at a specific pressure and flow rate. This air flows directly from the rear end of the compressor into the tailpipe, bypassing the fuel cell stack. This operation consumes some power but has no impact on the fuel cell stack.

[0131] The temperature maintenance component within the fuel cell also includes a thermal management component, which includes a water pump, a PTC, and a cooling fan. The water pump needs to determine its working components based on the water temperature. When the temperature of the coolant in the system is greater than a first preset temperature, the temperature is determined to be too high. At this time, the cooling fan rotates at full power to reduce the temperature of the coolant in the system. When the temperature of the coolant in the system is less than a second temperature, the temperature is determined to be too low. The PTC activates and heats the coolant. In this way, the temperature of the water pump is controlled by internal components, and excess power is consumed. The preset power, first preset temperature, and second preset temperature can all be set as needed. In the embodiments of this application, there is no specific limitation on this. For example, the preset power can be 80%, 75%, or 70%, etc. The first preset temperature can be 70°C, 75°C, or 80°C, etc. The second preset temperature can be 10°C, 15°C, or 20°C, etc.

[0132] In some embodiments, even after the above components are operating, the brake temperature continues to rise. When the brake temperature reaches the protection temperature, the air compressor speed is increased and the back-pressure valve is appropriately closed, thereby increasing the air compressor power consumption to maximum. Simultaneously, the cooling fan and the PTC operate simultaneously, consuming power. The protection temperature can be set based on the maximum temperature the brake can withstand, for example, half the maximum temperature the brake can withstand.

[0133] When the vehicle braking signal disappears, the above power-consuming components stop working and the remaining power of the power battery is read again.

[0134] Through this embodiment, when the vehicle is on a downhill section and the power battery cannot recover electricity, the recovered electricity is consumed by the temperature maintenance component inside the fuel cell, so the motor can still participate, reducing the probability of overheating failure caused by long-term operation of the brake.

[0135] It should be understood that the size of the serial numbers of the steps in the above embodiments does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0136] See also Figure 6 , which shows a schematic diagram of the structure of an energy management device provided by the present application, including various units for executing various steps in the above embodiments, see Figure 6 , the energy management device comprises:

[0137] A first determining unit 601 is configured to determine whether there is a downhill section in the predicted driving path of the vehicle;

[0138] A second determining unit 602 is configured to determine the amount of regenerated electricity of the vehicle based on the road section information of the downhill section, where the amount of regenerated electricity is the amount of electricity recovered by the vehicle when traveling on the downhill section;

[0139] a third determining unit 603 for determining a target distance based on the remaining capacity and the reclaimed power if the remaining capacity of the power battery of the vehicle does not meet a storage requirement for storing the reclaimed power;

[0140] The adjustment unit 604 is configured to increase the energy output power of the power battery when the distance between the position of the vehicle and the starting point of the downhill section is not greater than the target distance.

[0141] In some embodiments, the first determination unit 601 is used to determine the location of a downhill section in the historical driving data of the vehicle based on the historical driving data of the vehicle; obtain the predicted driving path of the vehicle based on the current position of the vehicle; if the predicted driving path includes the location of the downhill section, determine that there is a downhill section in the predicted driving path of the vehicle.

[0142] In some embodiments, the road segment information includes a road segment identifier of the road segment;

[0143] The second determining unit 602 is used to determine the historical energy recovery data of the downhill section corresponding to the section identifier from the historical driving data of the vehicle according to the section identifier of the downhill section; and determine the amount of recovered electricity of the vehicle on the downhill section from the historical energy recovery data.

[0144] In some embodiments, the apparatus further comprises:

[0145] a recording unit, configured to record a starting position of the downhill section in response to the vehicle traveling to the downhill section;

[0146] The recording unit is used to record the amount of regenerated electricity generated by the vehicle during downhill driving.

[0147] The generating unit is configured to generate historical driving data of the vehicle based on the starting position of the downhill section, the regenerated power and the section identifier of the downhill section.

[0148] In some embodiments, the first determination unit 601 is used to determine the location of the downhill section marked in the map information; obtain the predicted driving path of the vehicle based on the current position of the vehicle; if the predicted driving path includes the location of the downhill section, determine that there is a downhill section in the predicted driving path of the vehicle.

[0149] In some embodiments, the road segment information includes the length and slope of the road segment;

[0150] The second determining unit 602 is configured to predict the amount of regenerated power generated by the downhill section according to the length and slope of the downhill section.

[0151] In some embodiments, the third determination unit 603 is used to determine the amount of electricity required to be consumed by the power battery based on the remaining capacity and the recovered electricity. The amount of electricity required to be consumed by the power battery is the amount of electricity that needs to be consumed from the remaining electricity of the power battery when the power battery meets the storage conditions for storing recovered electricity; the target distance is determined based on the amount of electricity required to be consumed by the power battery and the increased energy output power of the power battery.

[0152] In some embodiments, the apparatus further comprises:

[0153] The component control unit is used to start the temperature maintenance component of the fuel cell to consume the energy obtained by energy recovery when the vehicle is traveling on a downhill section if the remaining power of the power battery is greater than a preset power.

[0154] In an embodiment of the present application, by predicting whether there is a downhill section in the vehicle's driving path, when there is a downhill section in the vehicle's driving path, based on the section information of the downhill section, it is predicted that when the vehicle passes through the downhill section, the recovered electricity obtained due to energy recovery, when the remaining capacity of the power battery does not meet the storage demand for storing the recovered electricity, before the vehicle enters the downhill section, the output power of the power battery is increased so that before the vehicle enters the downhill section, the power battery can have sufficient capacity to store the recovered electricity obtained by the downhill section, thereby avoiding energy waste caused by the inability to recover energy after the power battery is fully charged, thereby improving energy utilization and optimizing the economy of the vehicle.

[0155] Figure 7 Schematic diagram of a vehicle provided by an exemplary embodiment of the present application. As shown in the figure, the vehicle 7 of this embodiment includes: a processor 70, a memory 71, and a computer program 72 stored in the memory 71 and executable on the processor 70, such as an energy management program. When the processor 70 executes the computer program 72, the steps in the above-mentioned various energy management method embodiments are implemented, such as Figure 2 Alternatively, when the processor 70 executes the computer program 72, the functions of each unit in the above-mentioned device embodiments are realized, for example Figure 6 The functions of units 601 to 604 are shown.

[0156] Exemplarily, the computer program 72 may be divided into one or more units, which are stored in the memory 71 and executed by the processor 70 to implement the present application. The one or more units may be a series of computer program instruction segments capable of performing specific functions, and the instruction segments are used to describe the execution process of the computer program 72 in the vehicle 7. For example, the computer program 72 may be divided into a first determination unit, a second determination unit, a third determination unit, and an adjustment unit. The specific functions of each module are as follows:

[0157] A first determining unit 601 is configured to determine whether there is a downhill section in the predicted driving path of the vehicle;

[0158] A second determining unit 602 is configured to determine the amount of regenerated electricity of the vehicle based on the road section information of the downhill section, where the amount of regenerated electricity is the amount of electricity recovered by the vehicle when traveling on the downhill section;

[0159] a third determining unit 603 for determining a target distance based on the remaining capacity and the reclaimed power if the remaining capacity of the power battery of the vehicle does not meet a storage requirement for storing the reclaimed power;

[0160] The adjustment unit 604 is configured to increase the energy output power of the power battery when the distance between the position of the vehicle and the starting point of the downhill section is not greater than the target distance.

[0161] The vehicle 7 may be any vehicle with a control function. The vehicle 7 may include, but is not limited to, a processor 70 and a memory 71. It will be understood by those skilled in the art that Figure 7 This is merely an example of the vehicle 7 and does not constitute a limitation on the vehicle 7 . The vehicle 7 may include more or fewer components than shown in the figure, or a combination of certain components, or different components. For example, the vehicle 7 may also include input and output devices, network access devices, buses, etc.

[0162] The processor 70 may be a central processing unit (CPU), other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA), other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or any conventional processor.

[0163] The memory 71 can be an internal storage unit of the vehicle 7, such as the vehicle's hard drive or memory. Alternatively, the memory 71 can be an external storage device of the vehicle 7, such as a plug-in hard drive, a Smart Media Card (SMC), a Secure Digital (SD) card, a flash memory card, etc. Furthermore, the memory 71 can include both the vehicle's internal storage unit and an external storage device. The memory 71 is used to store the computer program and other programs and data required by the terminal device. The memory 71 can also be used to temporarily store data that has been output or is about to be output.

[0164] Those skilled in the art can clearly understand that, for the convenience and brevity of description, only the division of the above-mentioned functional units and modules is used as an example for illustration. In actual applications, the above-mentioned functions can be distributed and completed by different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above. The functional units and modules in the embodiment can be integrated into one processing unit, or each unit can exist physically alone, or two or more units can be integrated into one unit. The above-mentioned integrated unit can be implemented in the form of hardware or in the form of software functional units. In addition, the specific names of the functional units and modules are only for the convenience of distinguishing each other, and are not used to limit the scope of protection of this application. The specific working process of the units and modules in the above-mentioned system can refer to the corresponding process in the aforementioned method embodiment, and will not be repeated here.

[0165] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant description of other embodiments.

[0166] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0167] In the embodiments provided in this application, it should be understood that the disclosed devices / terminal equipment and methods can be implemented in other ways. For example, the device / terminal equipment embodiments described above are merely illustrative. For example, the division of the modules or units is merely a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0168] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0169] In addition, the functional units in the various embodiments of the present application may be integrated into a single processing unit, or each unit may exist physically separately, or two or more units may be integrated into a single unit. The aforementioned integrated units may be implemented in the form of hardware or software functional units.

[0170] If the integrated module / unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the present application implements all or part of the process in the above-mentioned embodiment method, and can also be completed by instructing the relevant hardware through a computer program. The computer program can be stored in a computer-readable storage medium, and when the computer program is executed by the processor, it can implement the steps of the above-mentioned various method embodiments. Among them, the computer program includes computer program code, and the computer program code can be in source code form, object code form, executable file or some intermediate form. The computer-readable medium may include: any entity or device capable of carrying the computer program code, recording medium, USB flash drive, mobile hard disk, magnetic disk, optical disk, computer memory, read-only memory (ROM), random access memory (RAM), electric carrier signal, telecommunication signal and software distribution medium. It should be noted that the content contained in the computer-readable medium can be appropriately increased or decreased according to the requirements of legislation and patent practice in the jurisdiction. For example, in some jurisdictions, according to legislation and patent practice, computer-readable media do not include electric carrier signals and telecommunication signals.

[0171] An embodiment of the present application further provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps in the above-mentioned method embodiments are implemented.

[0172] The embodiments of the present application also provide a computer program product. When the computer program product is run on a mobile terminal, the mobile terminal can implement the steps in the above-mentioned method embodiments when executing the computer program product.

[0173] The above-described embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present application, and should all be included in the scope of protection of the present application.

Claims

1. An energy management method, characterized in that: The method comprises: Determining that there is a downhill section in the predicted driving path of the vehicle; determining, based on the road section information of the downhill road section, a regenerated amount of the vehicle, wherein the regenerated amount is the amount of energy recovered when the vehicle travels on the downhill road section; If the remaining capacity of the power battery of the vehicle does not meet the storage requirement for storing the recovered power, determining a target distance based on the remaining capacity and the recovered power; When the distance between the position of the vehicle and the starting point of the downhill section is not greater than the target distance, the energy output power of the power battery is increased.

2. The method according to claim 1, wherein The determining whether there is a downhill section in the predicted driving path of the vehicle includes: Determining, based on the historical driving data of the vehicle, a location of a downhill section existing in the historical driving data; Obtaining a predicted driving path of the vehicle based on the current position of the vehicle; If the predicted driving path includes the position of the downhill section, it is determined that there is a downhill section in the predicted driving path of the vehicle.

3. The method according to claim 2, wherein The road section information includes the road section identifier of the road section; The determining of the regenerative power of the vehicle according to the road section information of the downhill road section includes: determining, according to the road section identifier of the downhill road section, historical energy recovery data of the downhill road section corresponding to the road section identifier from historical driving data of the vehicle; The amount of energy recovered by the vehicle on the downhill section is determined from the historical energy recovery data.

4. The method according to claim 2, wherein Before obtaining the predicted driving path of the vehicle based on the current position of the vehicle, the method further includes: In response to the vehicle traveling to a downhill section, recording a starting position of the downhill section; During downhill driving, the amount of regenerative power generated by the vehicle on the downhill section is recorded; The historical driving data of the vehicle is generated based on the starting position of the downhill section, the regenerated power and the section identifier of the downhill section.

5. The method according to claim 1, wherein The determining whether there is a downhill section in the predicted driving path of the vehicle includes: Determine the location of the downhill road section marked in the map information; Obtaining a predicted driving path of the vehicle based on the current position of the vehicle; If the predicted driving path includes the position of the downhill section, it is determined that there is a downhill section in the predicted driving path of the vehicle.

6. The method according to claim 5, wherein The road section information includes the length and slope of the road section; The determining of the regenerative power of the vehicle according to the road section information of the downhill road section includes: The amount of recovered electricity generated by the downhill section is predicted according to the length and the slope of the downhill section.

7. The method according to any one of claims 1 to 6, wherein: The determining the target distance according to the remaining capacity and the recovered power includes: determining the amount of electricity required to be consumed by the power battery based on the remaining capacity and the recovered electricity, where the amount of electricity required to be consumed by the power battery is the amount of electricity required to be consumed from the remaining electricity of the power battery when the power battery meets storage conditions for storing the recovered electricity; The target distance is determined according to the power consumption required by the power battery and the increased energy output power of the power battery.

8. The method according to any one of claims 1 to 6, wherein: After increasing the energy output power of the power battery, the method further includes: When the vehicle is traveling on a downhill section, if the remaining power of the power battery is greater than a preset power, the temperature maintaining component of the fuel cell is started to consume the energy obtained by energy recovery.

9. A vehicle, characterized in that: The vehicle includes a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the energy management method according to any one of claims 1 to 8.

10. A computer-readable storage medium, characterized in that The computer-readable storage medium stores a computer program, wherein the computer program implements the energy management method according to any one of claims 1 to 8 when executed by a processor.

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