Hydrogen fuel cell power control method and device

Abstract

The invention provides a hydrogen fuel cell power control method and device, relates to the technical field of hydrogen fuel cells, and solves the technical problem of meeting the continuous real-time demand of vehicle power on the premise of controlling the vehicle cost. According to the scheme, before a vehicle travels to the starting point position of a first road section, preset output power corresponding to the road section is obtained, the preset output power is actually prediction of hydrogen fuel cell output power needed by the road section when the vehicle travels on a second road section, and the second road section is a road section which passes through the front and is adjacent to the first road section; in order to obtain the preset output power, reaction parameter information of the hydrogen fuel cell is predicted, for example, the reaction parameter information at least comprises the hydrogen stoichiometric ratio, the air stoichiometric ratio and the cooling liquid flow, and finally when the vehicle runs to the starting point position of the first road section, preparation can be made in advance according to the predicted data. Immediate response is realized; and the hydrogen fuel cell is controlled to provide target power.

Description

Technical Field

[0001] The present disclosure relates to the technical field of hydrogen fuel cells, and in particular to a hydrogen fuel cell power control method and device. Background Art

[0002] A hydrogen fuel cell is a device that generates electric current through an electrochemical reaction between hydrogen and oxygen. It is a clean energy technology that produces water as the only byproduct through the reaction of hydrogen and oxygen, without any pollutant emissions. Therefore, it can be used to solve the emission problems of traditional engines and has been favored by passenger cars in recent years.

[0003] Currently, during normal operation of hydrogen fuel cells, they are often unable to respond quickly and instantaneously to vehicle power requests due to slow component response and other reasons.

[0004] At present, to deal with the above problems, a large-capacity power battery is usually added to the vehicle to provide power to the vehicle in a timely manner to fill the time difference of the slow instantaneous power response of the hydrogen fuel cell. However, although this meets the instantaneous power demand of the vehicle, it greatly increases the cost of the vehicle. Summary of the invention

[0005] The present disclosure provides a hydrogen fuel cell power control method and device, the main purpose of which is to meet the continuous and real-time demand for vehicle power while controlling vehicle costs.

[0006] In order to solve the above technical problems, the first aspect of the embodiment of the present disclosure provides a hydrogen fuel cell power control method, the method comprising:

[0007] Before the vehicle travels to the starting point of the first road section, a preset output power corresponding to the first road section is obtained, where the preset output power is a predicted value of the hydrogen fuel cell output power required for traveling on the first road section based on the driving parameter information obtained when the vehicle travels on the second road section; the second road section is a road section adjacent to the first road section in the vehicle's driving path and passed by in front;

[0008] Predicting reaction parameter information of the hydrogen fuel cell according to the preset output power, the reaction parameter information at least including: hydrogen stoichiometric ratio, air stoichiometric ratio and coolant flow rate;

[0009] When the vehicle reaches the starting point of the first road section, the hydrogen fuel cell is controlled to provide the target power to the vehicle according to the predicted reaction parameter information.

[0010] In some embodiments, when the vehicle is traveling on the second road segment, when the vehicle is traveling on the second road segment, the method further includes:

[0011] Acquire driving parameter information of the vehicle on the second road section, the driving parameter information at least including: current road condition information corresponding to the second road section, the corresponding self-weight, passenger weight, current vehicle speed and current motor output power of the vehicle;

[0012] Calculate the load corresponding to the vehicle based on the vehicle's own weight, passenger weight, current vehicle speed, current motor output power and current road condition information;

[0013] Obtaining future road condition information corresponding to the first road section;

[0014] Calculate the engine power required for the vehicle on the first road section according to the future road condition information, the current vehicle speed and the load;

[0015] According to the engine power, the output power of the hydrogen fuel cell corresponding to the demand on the first road section is determined as the preset output power corresponding to the first road section.

[0016] In some embodiments, after predicting the reaction parameter information of the hydrogen fuel cell according to the preset output power, the method further includes:

[0017] According to the reaction parameter data, before reaching the starting point of the first section, the hydrogen stoichiometric ratio, the air stoichiometric ratio and the coolant flow rate are controlled and configured in advance.

[0018] In some embodiments, the method further comprises:

[0019] In the vehicle driving path, iteratively performing the operation of determining two adjacent road sections according to a preset time interval, the two adjacent road section operations include: a first road section and a second road section, wherein the second road section is a preceding road section of the driving path; or,

[0020] In the vehicle driving path, the operation of determining two adjacent road sections is iteratively performed according to a preset interval distance.

[0021] In some embodiments, in a vehicle driving path, iteratively performing the operation of determining two adjacent road segments at a preset time interval includes:

[0022] Determine the current position and current speed of the vehicle at the current moment;

[0023] According to a preset time interval, determine the next two moments adjacent to the current moment: a first moment and a second moment, where the first moment is the earlier moment;

[0024] Determine a first time length according to the current moment and the first moment;

[0025] Determine a second time length according to the first moment and the second moment;

[0026] Determine, according to the current position and the current vehicle speed, in the vehicle driving path, a second section corresponding to the first time length and a first section corresponding to the second time length;

[0027] According to each adjacent time point reached by the vehicle, the operation of determining the second road section and the first road section is re-iteratively executed.

[0028] In some embodiments, in a vehicle driving path, iteratively performing an operation of determining two adjacent road segments according to a preset interval distance includes:

[0029] Setting the length of the preset interval distance includes: a buffer distance and a target driving distance, the length of the buffer distance is less than the target driving distance, the buffer distance is used as the second section, and the target driving distance is used as the first section;

[0030] In the vehicle driving path, according to the preset interval distance, the operation of demarcating two adjacent road sections is iteratively performed, and the two adjacent road sections are: a first road section and a second road section.

[0031] A second aspect of the present disclosure provides a hydrogen fuel cell power control device, the device comprising:

[0032] A first acquisition unit is used to acquire a preset output power corresponding to the first road section before the vehicle travels to the starting position of the first road section, wherein the preset output power is a predicted value of the hydrogen fuel cell output power required for traveling on the first road section according to the driving parameter information obtained when the vehicle travels on the second road section; the second road section is a road section adjacent to the first road section in the vehicle's driving path and passed by in front;

[0033] A prediction unit, used to predict reaction parameter information of the hydrogen fuel cell according to a preset output power, the reaction parameter information at least including: hydrogen stoichiometric ratio, air stoichiometric ratio and coolant flow rate;

[0034] The control unit is used to control the hydrogen fuel cell to provide the target power to the vehicle according to the predicted reaction parameter information when the vehicle travels to the starting point of the first road section.

[0035] In some embodiments, when the vehicle is traveling on the second road segment, the device further includes:

[0036] A second acquisition unit is used to acquire driving parameter information of the vehicle on the second road section, the driving parameter information at least including: current road condition information corresponding to the second road section, the corresponding vehicle weight, passenger weight, current vehicle speed and current motor output power;

[0037] A calculation unit, used to calculate the load corresponding to the vehicle according to the corresponding self-weight of the vehicle, the weight of passengers, the current vehicle speed, the current motor output power and the current road condition information;

[0038] The second acquisition unit is further used to acquire future road condition information corresponding to the first road section;

[0039] The calculation unit is further used to calculate the engine power required by the vehicle on the first road section according to the future road condition information, the current vehicle speed and the load;

[0040] The first determination unit is used to determine the output power corresponding to the demand of the hydrogen fuel cell on the first section according to the engine power as the preset output power corresponding to the first section.

[0041] In some embodiments, after predicting the reaction parameter information of the hydrogen fuel cell according to the preset output power, the device further includes:

[0042] A unit is provided for controlling and configuring the hydrogen stoichiometric ratio, the air stoichiometric ratio and the coolant flow rate in advance according to the reaction parameter data before the vehicle reaches the starting position of the first section.

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

[0044] A second determining unit is used to iteratively perform an operation of determining two adjacent road sections in a vehicle driving path according to a preset time interval, wherein the two adjacent road sections include: a first road section and a second road section, wherein the second road section is a preceding road section of the driving path; or

[0045] The third determining unit is used to iteratively perform an operation of determining two adjacent road sections according to a preset interval distance in a vehicle driving path.

[0046] In some embodiments, the second determining unit is specifically configured to:

[0047] Determine the current position and current speed of the vehicle at the current moment;

[0048] According to a preset time interval, determine the next two moments adjacent to the current moment: a first moment and a second moment, where the first moment is the earlier moment;

[0049] Determine a first time length according to the current moment and the first moment;

[0050] Determine a second time length according to the first moment and the second moment;

[0051] Determine, according to the current position and the current vehicle speed, in the vehicle driving path, a second section corresponding to the first time length and a first section corresponding to the second time length;

[0052] According to each adjacent time point reached by the vehicle, the operation of determining the second road section and the first road section is re-iteratively executed.

[0053] In some embodiments, the third determining unit is specifically configured to:

[0054] Setting the length of the preset interval distance includes: a buffer distance and a target driving distance, the length of the buffer distance is less than the target driving distance, the buffer distance is used as the second section, and the target driving distance is used as the first section;

[0055] In the vehicle driving path, according to the preset interval distance, the operation of demarcating two adjacent road sections is iteratively performed, and the two adjacent road sections are: a first road section and a second road section.

[0056] A third aspect of an embodiment of the present disclosure provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the above hydrogen fuel cell power control method is implemented.

[0057] A fourth aspect of an embodiment of the present disclosure provides an electronic device, including: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the computer program implements the above hydrogen fuel cell power control method when executed by the processor.

[0058] Through the above technical scheme, the hydrogen fuel cell power control and device provided by the present disclosure obtains the preset output power corresponding to the first section before the vehicle travels to the starting point of the section. The preset output power is actually a prediction of the hydrogen fuel cell output power required on the second section when the vehicle travels. In order to distinguish two adjacent different sections, the present disclosure calls the one that travels in front the "second section" and the one that travels in the back the "first section". In order to obtain the preset output power, the reaction parameter information of the hydrogen fuel cell is predicted, such as at least including: hydrogen stoichiometric ratio, air stoichiometric ratio and coolant flow rate. Finally, when the vehicle travels to the starting point of the first section, it can immediately respond and control the hydrogen fuel cell to provide the target power according to the above prediction data.

[0059] Compared with the prior art which adds a large-capacity power battery to fill the time difference of the slow instantaneous power response of the hydrogen fuel cell, but leads to the problem of high cost, the present invention does not need to add additional battery equipment, but predicts the power that the hydrogen fuel cell should provide on the next adjacent section in the previous adjacent section of the vehicle's driving path, as well as the reaction parameter information required to achieve the power. This is equivalent to making an advance time difference before driving to the current section. Then, when driving to the starting point of the current section, based on the time difference mentioned above, the working time on the hydrogen fuel cell is shortened, and the response speed to the power demand is improved, thereby achieving the continuous and real-time demand for vehicle power while controlling the overall cost, providing a better solution.

[0060] The above description is only an overview of the technical solution of the present disclosure. In order to more clearly understand the technical means of the present disclosure, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present disclosure more obvious and easy to understand, the specific implementation methods of the present disclosure are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0061] In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, 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 disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0062] Figure 1 A flow chart of a hydrogen fuel cell power control method provided by an embodiment of the present disclosure;

[0063] Figure 2 A flow chart of another hydrogen fuel cell power control method provided by an embodiment of the present disclosure;

[0064] Figure 3 A schematic diagram for determining a first road segment and a second road segment in a vehicle driving path is provided for an embodiment of the present disclosure;

[0065] Figure 4 A schematic diagram of a system architecture constructed for an example scenario is provided for an embodiment of the present disclosure;

[0066] Figure 5 A block diagram of a hydrogen fuel cell power control device provided by an embodiment of the present disclosure;

[0067] Figure 6 A block diagram of another hydrogen fuel cell power control device provided in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0068] The following is a further detailed description of the embodiments of the present disclosure in conjunction with the accompanying drawings and examples. The detailed description of the following embodiments and the accompanying drawings are used to exemplarily illustrate the principles of the present disclosure, but cannot be used to limit the scope of the present disclosure. The present disclosure can be implemented in many different forms and is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

[0069] The present disclosure provides these embodiments to make the present disclosure thorough and complete, and to fully express the scope of the present disclosure to those skilled in the art. It should be noted that unless otherwise specifically stated, the relative arrangement of the parts and steps, the composition of the materials, the numerical expressions and the numerical values ​​set forth in these embodiments should be interpreted as being merely exemplary, and not as limiting.

[0070] It should be noted that, in the description of the present disclosure, unless otherwise specified, the meaning of "multiple" is greater than or equal to two; the terms "upper", "lower", "left", "right", "inner", "outer", etc., indicating the orientation or positional relationship, are only for the convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present disclosure. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0071] In addition, the words "first", "second" and similar words used in the present disclosure do not indicate any order, quantity or importance, but are only used to distinguish different parts. "Vertical" does not mean vertical in the strict sense, but is within the tolerance range. "Parallel" does not mean parallel in the strict sense, but is within the tolerance range. "Include" or "comprising" and similar words mean that the elements before the word include the elements listed after the word, and do not exclude the possibility of including other elements.

[0072] It should also be noted that in the description of the present disclosure, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present disclosure can be understood according to the specific circumstances. When a specific device is described as being located between a first device and a second device, there may or may not be an intermediate device between the specific device and the first device or the second device.

[0073] All terms used in the present disclosure have the same meanings as those understood by those of ordinary skill in the art to which the present disclosure belongs, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries, for example, should be interpreted as having meanings consistent with their meanings in the context of the relevant technology, and should not be interpreted in an idealized or extremely formal sense, unless explicitly defined as such herein.

[0074] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0075] As a clean and efficient energy conversion device, hydrogen fuel cells are gradually becoming an important part of the automotive power system. Hydrogen fuel cells convert hydrogen and oxygen into electricity and water through electrochemical reactions to provide power for vehicles. However, in the normal operation of hydrogen fuel cells, due to reasons such as slow response of components, they often cannot respond quickly and instantaneously to vehicle power requests. Specific explanations include the following:

[0076] For example, in the normal operation of hydrogen fuel cells, the supply of air (oxygen) is crucial to the electrochemical reaction. However, the air supply system (including air compressors, humidifiers, intercoolers and other components) may have delays when transmitting air, resulting in the inability to meet the system's immediate needs when the load changes suddenly.

[0077] Furthermore, the inventors have discovered through research that the current measures to deal with the inability to respond quickly and instantaneously to vehicle power requests are usually to add a large-capacity power battery to the vehicle. When the vehicle has a power request, the power battery can first respond instantaneously to provide power. After the hydrogen fuel cell can output power, there will still be hydrogen fuel cells to continue to provide power to support the vehicle's power needs.

[0078] The inventors found that this is equivalent to using power batteries to make up for the time difference in achieving instantaneous response, so as to fill the problem of slow instantaneous power response of hydrogen fuel cells. Although this meets the instantaneous power demand of the vehicle, it adds a lot of extra cost to the vehicle.

[0079] Based on the above considerations, the inventors found that without increasing the cost of the vehicle, if the perspective of shortening the response to the vehicle power request is to reduce the operation time on the hydrogen fuel cell system control unit (FCU) when it receives a power request from the vehicle control unit (VCU) so as to provide power as quickly as possible, the FCU response time will be greatly shortened.

[0080] To this end, the present disclosure provides a hydrogen fuel cell power control method, such as Figure 1 As shown, the present disclosure provides the following steps:

[0081] 101. Before a vehicle travels to a starting point of a first road section, a preset output power corresponding to the first road section is obtained.

[0082] In the vehicle driving path, the embodiment of the present disclosure uses the words "first" and "second" to identify any two adjacent road sections. The first road section and the second road section are two adjacent road sections planned in the vehicle's driving path, and the second road section is the previous road section in the driving path. That is, when the vehicle passes the end position of the second road section, it is equivalent to reaching the starting position of the first road section and is about to enter the first road section.

[0083] The disclosed embodiment is based on the adjacent relationship between the first road section and the second road section, and thus predicts the output power required by the hydrogen fuel cell on the next road section (the first road section) on the previous road section (the second road section) according to the driving route sequence, and the predicted result can be used as the preset output power corresponding to the first road section, so that when the vehicle travels to the next road section, it can directly obtain the power required for this road section. In actual application scenarios, using such predicted data can reduce the operation time of the hydrogen fuel cell system control unit (FCU) when receiving the vehicle control unit (VCU), that is, the predicted data (that is, the preset output power corresponding to the first road section) can be directly used, which will greatly shorten the FCU response time.

[0084] 102. According to the preset output power, predict the reaction parameter information of the hydrogen fuel cell, the reaction parameter information at least includes: hydrogen stoichiometric ratio, air stoichiometric ratio and coolant flow rate.

[0085] In the embodiment of the present disclosure, in order to obtain the preset output power, the required reaction parameter information is predicted, such as at least including: hydrogen stoichiometric ratio, air stoichiometric ratio and coolant flow rate.

[0086] It should be noted that in order to achieve the required preset output power, in addition to the three influencing factors of "hydrogen stoichiometric ratio, air stoichiometric ratio and coolant flow rate", there are also influencing factors such as "external accessory heat dissipation". However, among these influencing factors, the first three are the main factors and will cause a lot of time to be spent on the hydrogen fuel cell system control unit (FCU). Therefore, the embodiment of the present disclosure mainly considers these three factors, and makes a prediction on the demand for the next section on the previous adjacent section, so that when the vehicle travels to the next section, the working time on the FCU can be shortened to shorten the response time of the hydrogen fuel cell.

[0087] In the embodiment of the present disclosure, in order to further reduce the operation time of the FCU, under the premise of not affecting the power demand of the vehicle on the current section, the embodiment of the present disclosure can also make advance preparations for the next section when driving on the previous adjacent section according to the predicted reaction parameter information, for example, including: in practical operation, the hydrogen stoichiometric ratio, air stoichiometric ratio and coolant flow rate required for the FCU to prepare in advance, which is equivalent to making preparations for the early response for the vehicle to travel to the next section.

[0088] 103. When the vehicle reaches the starting point of the first road section, the hydrogen fuel cell is controlled to provide the target power to the vehicle according to the predicted reaction parameter information.

[0089] As shown in 102, when the vehicle travels to the previous adjacent road section, the advance preparations that can be made in the embodiment of the present disclosure may include but are not limited to: in data processing, the preset output power required for the next road section (i.e., the power required to be provided by the hydrogen fuel cell) is calculated in advance, and the reaction parameter information required to achieve the preset output power, such as at least including the hydrogen stoichiometric ratio, air stoichiometric ratio and coolant flow rate; in actual operation, the FCU can be controlled in advance to prepare the required hydrogen stoichiometric ratio, air stoichiometric ratio and coolant flow rate according to the predicted values ​​of the hydrogen stoichiometric ratio, air stoichiometric ratio and coolant flow rate. Therefore, the embodiment of the present disclosure can make advance preparations in computing power and even in actual operation, just to directly use these advance preparations when the vehicle travels to the next road section, shorten the working time of the FCU, and thus shorten the response time of the hydrogen fuel cell.

[0090] As described above, the hydrogen fuel cell power control and device provided in the embodiment of the present disclosure does not require additional battery equipment. Instead, it predicts the power that should be provided by the hydrogen fuel cell on the next adjacent section in the vehicle's driving path, as well as the reaction parameter information required to achieve the power. This is equivalent to making an advance time difference before driving to this section. Then, when driving to the starting point of this section, based on the time difference mentioned above, the working time on the hydrogen fuel cell is shortened, thereby improving the response speed to the power demand, thereby achieving the continuous time-to-time demand for vehicle power while controlling the overall cost, providing a better solution.

[0091] For a more detailed explanation, the present disclosure also provides another hydrogen fuel cell power control method, such as Figure 2 As shown, the present disclosure provides the following steps:

[0092] 201. Iteratively determine a first road segment and a second road segment in a vehicle driving path.

[0093] In the embodiment of the present disclosure, the first section and the second section are any two adjacent sections in the vehicle's travel path. In order to indicate the order in which the vehicle travels, the embodiment of the present disclosure uses the words "first" and "second" as identifiers to distinguish them, and the vehicle passes through the second section first and then the first section.

[0094] Furthermore, in the vehicle driving path, the embodiment of the present disclosure may iteratively determine the first road section and the second road section, which may be but is not limited to adopting the following two parallel schemes:

[0095] Among them, one parallel scheme is: in the vehicle driving path, iteratively perform the operation of determining two adjacent sections according to the preset time interval, and the two adjacent sections operation includes: a first section and a second section, wherein the second section is the previous section of the driving path. Specifically, it can be but not limited to the following steps: A1-A5;

[0096] A1. Determine the current position and current speed of the vehicle at the current moment;

[0097] A2. Determine the next two moments adjacent to the current moment according to a preset time interval: a first moment and a second moment, where the first moment is the earlier moment;

[0098] A3. Determine a first time length according to the current moment and the first moment; and determine a second time length according to the first moment and the second moment;

[0099] A4. Determine, according to the current position and the current vehicle speed, the second section corresponding to the first time length and the first section corresponding to the second time length in the vehicle driving path;

[0100] A5. Re-iterate and execute the operation of determining the second road section and the first road section according to each adjacent time when the vehicle reaches the adjacent time.

[0101] As described in A1-A5 above, the disclosed embodiment can utilize the cloud platform to determine the driving path of the vehicle and locate the vehicle, and then iteratively determine the first section and the second section on the driving path. For example, it can be but not limited to taking the current position of the vehicle as the starting position, according to the preset time interval, such as the current moment is T1, the next moment is T2, the next moment is T3, and so on, a travel path (such as the second section) can be determined between the moments T1 and T2, and a travel path (such as the first section) can be determined between the moments T2 and T3. And since the two sections are adjacent sections, and the interval length of each section is not very large (for example, within 10 kilometers), the disclosed embodiment can approximately use the current vehicle speed and the duration of the interval between the two moments to calculate and obtain the driving path of each section.

[0102] It should be noted that the embodiment of the present disclosure determines the first section and the second section in the driving path rather than in terms of spatial distance. Therefore, complex road conditions may be encountered in the driving path, such as straight lines, turns, uphills and downhills, etc.

[0103] Among them, another parallel scheme is: in the vehicle driving path, iteratively perform the operation of determining two adjacent sections according to the preset interval distance, and the two adjacent sections operation includes: a first section and a second section, wherein the second section is the previous section of the driving path. Specifically, it can be but not limited to the following steps: B1-B2;

[0104] B1. Setting the length of the preset interval distance includes: a buffer distance and a target driving distance, wherein the length of the buffer distance is less than the target driving distance, the buffer distance is used as the second section, and the target driving distance is used as the first section;

[0105] B2. In the vehicle driving path, iteratively execute the operation of demarcating two adjacent road sections according to a preset interval distance, where the two adjacent road sections are: a first road section and a second road section.

[0106] As shown in B1-B2 above, the disclosed embodiment still utilizes the cloud platform to determine the driving path of the vehicle and locate the vehicle, and then the first section and the second section can be determined iteratively on the driving path. For example, it is possible but not limited to taking the current position of the vehicle as the starting point, planning the first section and the second section according to the preset interval distance, and setting the length of the preset interval distance to include: buffer distance and target driving distance, and the buffer distance is the second section, and the target driving distance is the first section. Then the existence of the second section is actually convenient for the vehicle to calculate the preset output power required on the first section at this time, and make corresponding advance preparations, such as controlling the FCU in advance to prepare the required hydrogen stoichiometric ratio, air stoichiometric ratio and coolant flow.

[0107] like Figure 3 , the embodiment of the present disclosure provides a schematic diagram of determining the first section and the second section in the vehicle driving path for the above two parallel solutions. Figure 3 The upper middle area is for illustration, and the first section and the second section are determined according to a preset time interval. It should be noted that in the embodiment of the present disclosure, for any two adjacent sections, the one in front is called the "second section" and the one in the back is called the "first section".

[0108] like Figure 3 The lower middle area is a schematic diagram showing that the first section and the second section are determined according to the preset interval distance. Figure 3 It can be seen that the second road segment is actually a buffer distance and is included in the first road segment of the previous group. Therefore, the embodiment of the present disclosure is equivalent to continuously performing prediction operations on the first road segment in each group of two adjacent road segments.

[0109] It should be noted that, in the embodiment of the present disclosure, for the two parallel branch schemes for determining the first section and the second section as above, full consideration should be given to the impact of the driving data on the previous section on the driving operation of the next adjacent section, so that when the predicted data obtained on the previous section is applied to the next section, the continuity of the vehicle's power demand can be guaranteed, that is, the advance preparation made on this section using the predicted data on the previous section is beneficial to the hydrogen fuel cell on this section to provide the correct power demand, so that in a driving path, for any two adjacent sections obtained based on iteration, the hydrogen fuel cell is controlled to output sufficient power during the vehicle's driving process, thereby making the power provided to the vehicle on each section in the entire driving path continuous and sufficient.

[0110] Therefore, the disclosed embodiment should provide corresponding constraints for the "preset time interval" and "preset interval distance" in the two parallel branch schemes. For example, based on historical driving experience, it is possible but not limited to setting time interval intervals, distance interval intervals, etc., so that the actual path distance between the first section and the second section is not too long, resulting in insufficient power when the predicted data is applied to the current section, or the actual path distance is too short, resulting in frequent prediction operations and consumption of system resources.

[0111] 202. When the vehicle is traveling on the second road section, predict the preset output power required for the vehicle to travel on the first road section.

[0112] In the embodiment of the present disclosure, this step can be further refined to include the following steps: C1-C5;

[0113] C1. Acquire driving parameter information of the vehicle on the second road section, where the driving parameter information at least includes: current road condition information corresponding to the second road section, the vehicle's own weight, passenger weight, current vehicle speed, and current motor output power;

[0114] C2. Calculate the load corresponding to the vehicle based on the vehicle's own weight, passenger weight, current vehicle speed, current motor output power and current road condition information;

[0115] C3, obtaining future road condition information corresponding to the first road section;

[0116] C4. Calculate the engine power required for the vehicle on the first road section according to the future road condition information, the current vehicle speed and the load;

[0117] C5. Determine the output power of the hydrogen fuel cell corresponding to the demand on the first road section according to the engine power, as the preset output power corresponding to the first road section.

[0118] As shown in C1-C4 above, after determining the road section, the embodiment of the present disclosure can, but is not limited to, use the cloud platform to obtain specific road section information on the road section, such as: straight line, turn, uphill and downhill, etc., and based on this, taking into account the different situations of the current road condition information, calculate the vehicle load (such as C2), and then calculate the engine power required for the vehicle to travel on the future road condition according to the future road condition information (such as C4). The required engine power is actually a prediction of the power that needs to be provided to the vehicle on the future road section (i.e., the first road section), and thus the power required to be provided by the hydrogen fuel cell. Therefore, the predicted engine power is used as the preset output power that the hydrogen fuel cell needs to provide on the first road section.

[0119] 203. Before the vehicle travels to the starting point of the first road section, obtain a preset output power corresponding to the first road section.

[0120] This step can add a correction to the preset output power obtained in 202. The disclosed embodiment can pre-calibrate the load range and the power demand range under different road conditions for different vehicle models based on a large amount of historical data, such as pre-establishing a mapping relationship including: load range, road condition mode, and power demand range. Based on the mapping relationship composed of these three, it can be used as a check for the preset output power obtained in C5 above. If there is a large deviation, it is necessary to re-predict the preset output power required on the first road section to ensure the power demand of the vehicle on the first road section in the future.

[0121] 204. According to the preset output power, predict the reaction parameter information of the hydrogen fuel cell, the reaction parameter information at least including: hydrogen stoichiometric ratio, air stoichiometric ratio and coolant flow rate.

[0122] After predicting the power that needs to be provided on the first section, that is, the preset output power, the embodiment of the present disclosure calculates the corresponding hydrogen stoichiometric ratio, air stoichiometric ratio and coolant flow rate. These data indicate that in order to make the hydrogen fuel cell output the preset output power as above on the first section, predictions are also made for the "hydrogen stoichiometric ratio, air stoichiometric ratio and coolant flow rate".

[0123] Accordingly, when the vehicle travels to the previous adjacent road section, the advance preparations that can be made in the embodiment of the present disclosure may include, but are not limited to: in data processing, the preset output power required for the next road section (i.e., the power required to be provided by the hydrogen fuel cell) is calculated in advance, as well as the required hydrogen stoichiometric ratio, air stoichiometric ratio, and coolant flow rate in order to achieve the preset output power; in actual operation, the FCU may be controlled in advance to prepare the required hydrogen stoichiometric ratio, air stoichiometric ratio, and coolant flow rate according to the predicted reaction parameter information, such as at least the values ​​of the hydrogen stoichiometric ratio, air stoichiometric ratio, and coolant flow rate. Thus, the embodiment of the present disclosure may make advance preparations in terms of computing power, or even in actual operation, so that when the vehicle travels to the next road section, these advance preparations can be directly used to shorten the working time of the FCU, thereby shortening the response time of the hydrogen fuel cell.

[0124] 205. When the vehicle reaches the starting point of the first road section, the hydrogen fuel cell is controlled to provide the target power to the vehicle according to the predicted reaction parameter information.

[0125] As shown in 201-205, the solution provided by the embodiment of the present disclosure is that when the vehicle is traveling on the second section, it predicts the preset output power and reaction parameter information required for the next adjacent section (i.e., the first section), and makes advance preparations such as: advance preparations in data processing and even in actual operations, which are indirectly equivalent to achieving an advance response when traveling to the first section, so that when the vehicle actually arrives at the first section, it can immediately respond to control the hydrogen fuel cell to provide power requirements.

[0126] In order to explain more clearly, the present disclosure provides an example scenario. The system architecture constructed by the example scenario is as follows: Figure 4 , including: a vehicle control unit (VCU), a fuel cell system, a fuel cell system control unit (FCU), and a cloud platform. By utilizing this system architecture, the vehicle implements methods such as 201-205.

[0127] Combined with Figure 4 It should be noted that once the vehicle reaches the starting point of the first section, the FCU will receive the power request from the VCU. The FCU can directly prepare in advance, such as "prepare in data processing" and / or "prepare in actual operation" mentioned in 103, shorten the working time on the FCU, and use the preset output power (as well as the preset hydrogen stoichiometric ratio, preset air stoichiometric ratio and preset coolant flow rate) obtained in advance on the previous adjacent section to respond immediately and provide power to the VCU to ensure the continuity and timeliness of the vehicle's power demand on each section.

[0128] As the above Figure 1 and Figure 2The embodiment of the present disclosure provides a hydrogen fuel cell power control device. The device embodiment corresponds to the aforementioned method embodiment. For ease of reading, the device embodiment will not repeat the details of the aforementioned method embodiment one by one, but it should be clear that the device in the embodiment of the present disclosure can correspond to all the contents of the aforementioned method embodiment. The device is used to meet the continuous and real-time demand for vehicle power while controlling costs, specifically as follows Figure 5 As shown, the device comprises:

[0129] The first acquisition unit 31 is used to acquire the preset output power corresponding to the first road section before the vehicle travels to the starting position of the first road section, the preset output power being a predicted value of the hydrogen fuel cell output power required for traveling on the first road section according to the driving parameter information obtained when the vehicle travels on the second road section; the second road section is a road section adjacent to the first road section in the vehicle's driving path and passing in front;

[0130] The prediction unit 32 is used to predict the reaction parameter information of the hydrogen fuel cell according to the preset output power, and the reaction parameter information at least includes: hydrogen stoichiometric ratio, air stoichiometric ratio and coolant flow rate;

[0131] The control unit 33 is used to control the hydrogen fuel cell to provide the target power to the vehicle according to the predicted reaction parameter information when the vehicle travels to the starting point of the first road section.

[0132] In some embodiments, Figure 6 As shown, when the vehicle is traveling on the second road section, the device further includes:

[0133] The second acquisition unit 34 is used to acquire the driving parameter information of the vehicle on the second road section, the driving parameter information at least including: the current road condition information corresponding to the second road section, the corresponding self-weight, passenger weight, current vehicle speed and current motor output power of the vehicle;

[0134] The calculation unit 35 is used to calculate the load corresponding to the vehicle according to the corresponding self-weight of the vehicle, the weight of the passengers, the current vehicle speed, the current motor output power and the current road condition information;

[0135] The second acquisition unit 34 is further used to acquire future road condition information corresponding to the first road section;

[0136] The calculation unit 35 is further used to calculate the engine power required by the vehicle on the first road section according to the future road condition information, the current vehicle speed and the load;

[0137] The first determination unit 36 ​​is used to determine the output power of the hydrogen fuel cell corresponding to the demand on the first road section according to the engine power as the preset output power corresponding to the first road section.

[0138] In some embodiments, Figure 6 As shown, after predicting the reaction parameter information of the hydrogen fuel cell according to the preset output power, the device also includes:

[0139] A unit 37 is provided for controlling and configuring the hydrogen stoichiometric ratio, the air stoichiometric ratio and the coolant flow rate in advance according to the reaction parameter data before the vehicle reaches the starting position of the first section.

[0140] In some embodiments, Figure 6 As shown, the device also includes:

[0141] The second determining unit 38 is used to iteratively perform an operation of determining two adjacent road sections in a vehicle driving path according to a preset time interval, wherein the two adjacent road sections include: a first road section and a second road section, wherein the second road section is a preceding road section of the driving path; or

[0142] The third determining unit 39 is used for iteratively performing an operation of determining two adjacent road sections according to a preset interval distance in the vehicle driving path.

[0143] In some embodiments, the second determining unit 38 is specifically configured to:

[0144] Determine the current position and current speed of the vehicle at the current moment;

[0145] According to a preset time interval, determine the next two moments adjacent to the current moment: a first moment and a second moment, where the first moment is the earlier moment;

[0146] Determine a first time length according to the current moment and the first moment;

[0147] Determine a second time length according to the first moment and the second moment;

[0148] Determine, according to the current position and the current vehicle speed, in the vehicle driving path, a second section corresponding to the first time length and a first section corresponding to the second time length;

[0149] According to each adjacent time point reached by the vehicle, the operation of determining the second road section and the first road section is re-iteratively executed.

[0150] In some embodiments, the third determining unit 39 is specifically configured to:

[0151] Setting the length of the preset interval distance includes: a buffer distance and a target driving distance, the length of the buffer distance is less than the target driving distance, the buffer distance is used as the second section, and the target driving distance is used as the first section;

[0152] In the vehicle driving path, according to the preset interval distance, the operation of demarcating two adjacent road sections is iteratively performed, and the two adjacent road sections are: a first road section and a second road section.

[0153] In summary, the hydrogen fuel cell power control device provided in the embodiment of the present disclosure includes a processor and a memory. The above-mentioned first acquisition unit, prediction unit and control unit are all stored in the memory as program units, and the processor executes the above-mentioned program units stored in the memory to realize the corresponding functions.

[0154] The processor includes a kernel, which retrieves the corresponding program unit from the memory. One or more kernels can be set, and the kernel parameters can be adjusted to solve the technical problem of meeting the continuous real-time demand of vehicle power while controlling vehicle costs.

[0155] An embodiment of the present disclosure provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the above hydrogen fuel cell power control method is implemented.

[0156] An embodiment of the present disclosure provides an electronic device, including: a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, the above hydrogen fuel cell power control method is implemented.

[0157] The present disclosure is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present disclosure. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0158] In a typical configuration, the device includes one or more processors (CPU), memory and bus. The device may also include input / output interface, network interface and the like.

[0159] The memory may include non-permanent memory in a computer-readable medium, random access memory (RAM) and / or non-volatile memory in the form of read-only memory (ROM) or flash RAM, and the memory includes at least one memory chip. The memory is an example of a computer-readable medium.

[0160] Computer readable media include permanent and non-permanent, removable and non-removable media that can be implemented by any method or technology to store information. Information can be computer readable instructions, data structures, program modules or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technology, compact disk read-only memory (CD-ROM), digital versatile disk (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices or any other non-transmission media that can be used to store information that can be accessed by a computing device. As defined herein, computer readable media does not include temporary computer readable media (transitory media), such as modulated data signals and carrier waves.

[0161] It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, commodity or device. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the process, method, commodity or device including the elements.

[0162] It will be appreciated by those skilled in the art that the embodiments of the present disclosure may be provided as methods, systems or computer program products. Therefore, the present disclosure may take the form of a complete hardware embodiment, a complete software embodiment or an embodiment combining software and hardware. Moreover, the present disclosure may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0163] The above are only embodiments of the present disclosure and are not intended to limit the present disclosure. For those skilled in the art, the present disclosure may have various modifications and variations. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present disclosure shall be included in the scope of the claims of the present disclosure.

[0164] All terms used in the present disclosure have the same meanings as those understood by those of ordinary skill in the art to which the present disclosure belongs, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries, for example, should be interpreted as having meanings consistent with their meanings in the context of the relevant technology, and should not be interpreted in an idealized or extremely formal sense, unless explicitly defined as such herein.

[0165] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0166] So far, various embodiments of the present disclosure have been described in detail. In order to avoid obscuring the concept of the present disclosure, some details known in the art are not described. Based on the above description, those skilled in the art can fully understand how to implement the technical solution disclosed here.

[0167] Although some specific embodiments of the present disclosure have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present disclosure. It should be understood by those skilled in the art that the above embodiments may be modified or some technical features may be replaced by equivalents without departing from the scope and spirit of the present disclosure. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there is no structural conflict.

Claims

1. A hydrogen fuel cell power control method, characterized in that: The method comprises: Before the vehicle travels to the starting point of a first road section, a preset output power corresponding to the first road section is obtained, wherein the preset output power is a predicted value of the hydrogen fuel cell output power required for traveling on the first road section based on the driving parameter information obtained when the vehicle travels on a second road section; the second road section is a road section adjacent to the first road section and passed by the vehicle in front in the driving path; Predicting reaction parameter information of the hydrogen fuel cell according to the preset output power, the reaction parameter information at least including: hydrogen stoichiometric ratio, air stoichiometric ratio and coolant flow rate; When the vehicle travels to the starting point of the first road section, the hydrogen fuel cell is controlled to provide the target power to the vehicle according to the predicted reaction parameter information.

2. The method according to claim 1, characterized in that When the vehicle is traveling on the second road section, the method further includes: Acquiring driving parameter information of the vehicle on the second road section, the driving parameter information at least including: current road condition information corresponding to the second road section, the vehicle's own weight, passenger weight, current vehicle speed, and current motor output power; Calculate the load corresponding to the vehicle according to the vehicle's own weight, the passenger weight, the current vehicle speed, the current motor output power and the current road condition information; Obtaining future road condition information corresponding to the first road section; Calculating the engine power required by the vehicle on the first road section according to the future road condition information, the current vehicle speed and the load; According to the engine power, the output power of the hydrogen fuel cell corresponding to the demand on the first road section is determined as the preset output power corresponding to the first road section.

3. The method according to claim 1, characterized in that After predicting the reaction parameter information of the hydrogen fuel cell according to the preset output power, the method further includes: According to the reaction parameter data, before the vehicle reaches the starting point of the first section, the hydrogen stoichiometric ratio, the air stoichiometric ratio and the coolant flow rate are controlled and configured in advance.

4. The method according to any one of claims 1 to 3, characterized in that: The method further comprises: In the vehicle driving path, iteratively performing an operation of determining two adjacent road sections at a preset time interval, the two adjacent road sections comprising: the first road section and the second road section, wherein the second road section is a preceding road section of the driving path; or, In the vehicle driving path, the operation of determining the two adjacent road sections is iteratively performed according to a preset interval distance.

5. The method according to claim 4, characterized in that The iteratively performing the operation of determining two adjacent road sections in the vehicle driving path at a preset time interval includes: Determining the current position and current speed of the vehicle at the current moment; Determine, according to a preset time interval, the next two moments adjacent to the current moment: a first moment and a second moment, wherein the first moment is the earlier moment; Determine a first time length according to the current time and the first time; Determine a second time length according to the first moment and the second moment; Determine, according to the current position and the current vehicle speed, in the vehicle travel path, the second road section corresponding to the first time length and the first road section corresponding to the second time length; According to each adjacent time point reached by the vehicle, the operation of determining the second road section and the first road section is re-iteratively executed.

6. The method according to claim 4, characterized in that The step of iteratively performing the operation of determining the two adjacent road sections according to a preset interval distance in the vehicle driving path includes: Setting the length of the preset interval distance includes: a buffer distance and a target driving distance, wherein the length of the buffer distance is less than the target driving distance, the buffer distance is used as the second road section, and the target driving distance is used as the first road section; In the vehicle driving path, an operation of demarcating two adjacent road sections is iteratively performed according to a preset interval distance, and the two adjacent road sections are: the first road section and the second road section.

7. A hydrogen fuel cell power control device, characterized in that: The device comprises: A first acquisition unit is used to acquire a preset output power corresponding to a first road section before the vehicle travels to a starting point of the first road section, wherein the preset output power is a predicted value of a hydrogen fuel cell output power required for traveling on the first road section according to driving parameter information obtained when the vehicle travels on a second road section; the second road section is a road section adjacent to the first road section and passed by the vehicle in front in the driving path of the vehicle; A prediction unit, configured to predict reaction parameter information of the hydrogen fuel cell according to the preset output power, wherein the reaction parameter information includes at least: a hydrogen stoichiometric ratio, an air stoichiometric ratio, and a coolant flow rate; A control unit is used to control the hydrogen fuel cell to provide target power to the vehicle according to the predicted reaction parameter information when the vehicle travels to the starting point of the first road section.

8. The device according to claim 7, characterized in that The device comprises: A second acquisition unit is used to acquire driving parameter information of the vehicle on the second road section, wherein the driving parameter information at least includes: current road condition information corresponding to the second road section, the corresponding self-weight, passenger weight, current vehicle speed and current motor output power of the vehicle; a calculation unit, configured to calculate a load corresponding to the vehicle according to the self-weight, the riding weight, the current vehicle speed, the current motor output power and the current road condition information corresponding to the vehicle; The second acquisition unit is further used to acquire future road condition information corresponding to the first road section; The calculation unit is further used to calculate the engine power required by the vehicle on the first road section according to the future road condition information, the current vehicle speed and the load; A determination unit is used to determine the output power corresponding to the demand of the hydrogen fuel cell on the first section according to the engine power, as the preset output power corresponding to the first section.

9. A computer-readable storage medium, characterized in that: A computer program is stored on the computer-readable storage medium, and when the computer program is executed by the processor, the hydrogen fuel cell power control method as described in any one of claims 1 to 6 is implemented.

10. An electronic device, characterized in that: include: A memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the computer program is executed by the processor, the hydrogen fuel cell power control method as claimed in any one of claims 1 to 6 is implemented.

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