A fuel cell vehicle energy management control method and fuel cell vehicle

Abstract

The present invention provides a fuel cell vehicle energy management control method and a fuel cell vehicle, which belongs to the field of fuel cell technology and solves the problem that the existing energy management control strategy is not suitable for variable operating conditions. The method comprises: when the fuel cell is running, real-time identification of the SOC section of the power battery is located, and control of the fuel cell to output power matching the section; every T The following parameters are counted once in a while under the current working conditions, including the operation time of the fuel cell at each output power, the number of times the fuel cell is turned on and off, and the number of times the fuel cell jumps from one output power to another; the output power of the fuel cell corresponding to the longest operation time is identified, and the output power is fine-tuned according to the number of times the fuel cell is turned on and off and the related number of jumps to control the next time. T The method adaptively adjusts the output power of the fuel cell based on the operating conditions, reducing the number of startups and shutdowns and the number of load changes.

Description

Technical Field

[0001] The present invention relates to the technical field of fuel cells, and in particular to a fuel cell vehicle energy management control method and a fuel cell vehicle. Background Art

[0002] Most of the existing fuel cell vehicle energy management control methods control the power output of the fuel cell and power battery based on the current power battery SOC (the ratio of remaining power to battery capacity) combined with the vehicle power demand. At present, the power of fuel cells carried on vehicles is getting higher and higher, while the power of power batteries is getting lower and lower. Under different operating conditions (heavy load, no load), the power demand of the vehicle is different and varies greatly.

[0003] When idling, when the output power of the fuel cell deviates greatly from the operating conditions and the SOC of the power battery is large, if the output power of the fuel cell is greater than the power required by the vehicle during this period, the difference between the power of the fuel cell and the power required by the vehicle will be charged into the power battery, causing the power battery to be frequently fully charged, which in turn causes the fuel cell to frequently start and stop. If the output power of the fuel cell is less than the power required by the vehicle during this period, the power battery will supplement the energy required by the vehicle, causing the SOC of the power battery to drop too quickly, causing the fuel cell to frequently change loads between high and low power states, shortening its lifespan.

[0004] When overloaded, if the fuel cell output power is greater than the vehicle's required power during this period and the power battery's SOC is large, the difference between the fuel cell power and the vehicle's required power will be charged into the power battery. If the deviation is large, the power battery's SOC will increase too quickly, and the fuel cell will frequently change loads between high and low power states.

[0005] In summary, the problem in the prior art that the output power of the fuel cell does not match the operating conditions, resulting in frequent switching on and off or frequent load changes of the fuel cell, needs to be solved urgently. Summary of the invention

[0006] In view of the above analysis, an embodiment of the present invention aims to provide a fuel cell vehicle energy management control method and a fuel cell vehicle, so as to solve the problem that the existing energy management control strategy is not suitable for variable operating conditions.

[0007] In one aspect, an embodiment of the present invention provides a fuel cell vehicle energy management control method, comprising the following steps:

[0008] The SOC of the power battery is divided into N independent sections, and each section i is set to correspond to a fixed fuel cell output power P i ; Wherein, i = 1, ..., N;

[0009] When the fuel cell is running, the current SOC segment j of the power battery is identified in real time, and the fuel cell is controlled to output the power P that matches the segment. j ; j = 1, ..., N;

[0010] The energy control parameters under the current working condition are counted every T time, including the fuel cell output power P in the T time before the statistical moment. i The running time t ik , fuel cell on / off times, fuel cell output power P i Jump to output power P j The number of jumps t ij ;

[0011] The output power of the fuel cell corresponding to the longest operating time is identified, and the output power is fine-tuned according to the number of times the fuel cell is turned on and off and the number of jumps related to the output power, so as to control the output of the fuel cell within the next time T.

[0012] The beneficial effects of the above technical solution are as follows: The energy management control method of the fuel cell vehicle adaptively adjusts the fuel cell output power based on the operating conditions, so that the fuel cell output power matches the vehicle operating power under the operating conditions, reduces the number of fuel cell startups and shutdowns and load changes, and improves the stability and durability of the fuel cell system.

[0013] Based on the further improvement of the above method, the method further comprises the following steps:

[0014] When the fuel cell is started, the SOC of the power battery at the current moment is obtained;

[0015] Determine the SOC section j of the power battery, and further identify whether the section j is the section corresponding to the highest power. If so, control the fuel cell to shut down, otherwise execute the next step;

[0016] Control the fuel cell output to match the set power P of this section j .

[0017] The total number of independent sections N=4, the sequence number of the independent sections is set from small to large according to the SOC of the power battery, and the output power of the fuel cell meets P 4 <P 3 <P 2 <P 1 .

[0018] P 4 =0, the step of identifying the fuel cell output power corresponding to the longest operation time, and fine-tuning the output power according to the number of times the fuel cell is turned on and off and the number of jumps related to the output power further includes:

[0019] Identify the fuel cell at the output power P 3 The running time t 3k Is it the longest and meets the running time t 3k >t 2k >t 1k If yes, further identify the number of times the fuel cell is turned on and off within time T t 30 Greater than the lowered output power P 3 The benchmark number t 3n When the fuel cell output power P is set in the vehicle controller, 3 Reduce a set power step size P 3sub , otherwise, proceed to the next step;

[0020] Identify the fuel cell at the output power P 2 Is the running time under the longest and meets the running time t 2k >t 3k >t 1k If yes, further identify the fuel cell output power P within time T 2 Jump to output power P 3 The number of jumps t 23 Greater than the lowered output power P 2 The benchmark number t 2n When the fuel cell output power P is set in the vehicle controller, 2 Reduce a set power step size P 2sub；

[0021] The step of identifying the output power of the fuel cell corresponding to the longest operation time and fine-tuning the output power according to the number of times the fuel cell is turned on and off and the number of jumps related to the output power also includes:

[0022] Identify the fuel cell at the output power P 3 The running time t 3k Is it the longest and meets the running time t 3k >t 2k >t 1k , fuel cell on / off times t 30 Less than the lowered output power P 3 The benchmark number t 3n If yes, further identify the fuel cell output power P within time T 3 Jump to output power P 2 The number of jumps t 32 Greater than the increased output power P 3 The benchmark number t 3m When the output power P set in the vehicle controller is controlled 3 Increase the power step size P3add , otherwise, proceed to the next step;

[0023] Identify the fuel cell at the output power P 2 Is the running time under the longest and meets the running time t 2k >t 3k >t 1k If yes, further identify the fuel cell output power P within time T 2 Jump to output power P 1 The number of jumps t 21 Greater than the increased output power P 2 The benchmark number t 2m When the output power P set in the vehicle controller is controlled 2 Increase the power step size P 2add .

[0024] Furthermore, the method further comprises the following steps:

[0025] During the operation of the vehicle, the charging or discharging of the power battery is controlled according to the difference between the vehicle's required power and the output power of the fuel cell.

[0026] Furthermore, the step of controlling the charging or discharging of the power battery according to the difference between the vehicle demand power and the output power of the fuel cell further includes:

[0027] When the difference between the vehicle demand power and the output power of the fuel cell is greater than 0, the power battery is controlled to output a first discharge power, wherein the first discharge power is the difference between the vehicle demand power and the output power of the fuel cell;

[0028] When the difference between the vehicle's required power and the fuel cell's output power is less than 0, the power battery is controlled to be charged at a second charging power, wherein the second charging power is the difference between the fuel cell's output power and the vehicle's required power.

[0029] Furthermore, in the first section, the SOC of the power battery is between 0 and 25% of the total power; in the second section, the SOC of the power battery is between 25% and 50% of the total power; in the third section, the SOC of the power battery is between 50% and 75% of the total power; in the fourth section, the SOC of the power battery is between 75% and 100% of the total power.

[0030] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0031] 1. The control strategy of fuel cell output power can be adaptively adjusted according to the operating conditions, quickly adapting to the current vehicle operating conditions.

[0032] 2. Make the output power of the fuel cell match the current working conditions, reduce the number of fuel cell startups and shutdowns and load changes, and continuously optimize the control strategy of the fuel cell output power based on statistical data at intervals of T.

[0033] 3. No need to change the hardware. Based on the existing fuel cell vehicles, the main thing is to adjust the control program to greatly improve the control effect and effectively improve the user experience.

[0034] On the other hand, the present invention also provides a fuel cell vehicle, including a fuel cell, a power battery, a battery power detection unit, and a vehicle controller; wherein:

[0035] The battery power detection unit is connected to the power supply terminal of the power battery to obtain the SOC of the power battery;

[0036] A vehicle controller, used to control the output power of the fuel cell according to the energy management control method according to any one of claims 1-9.

[0037] This Summary is provided to introduce a selection of concepts in a simplified form that are further described below in the Detailed Description. This Summary is not intended to identify key features or essential features of the disclosure, nor is it intended to limit the scope of the disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] The above and other objects, features and advantages of the present disclosure will become more apparent through a more detailed description of exemplary embodiments of the present disclosure in conjunction with the accompanying drawings, wherein like reference numerals generally represent like components throughout the exemplary embodiments of the present disclosure.

[0039] Figure 1 A schematic diagram showing the steps of the energy management control method during the operation of the fuel cell in Example 1 is shown;

[0040] Figure 2 A schematic diagram showing the principle of the energy management control method during the fuel cell startup process of Example 2 is shown.

[0041] Figure 3 A schematic diagram of a strategy 1 involved in the energy management control method of Example 2 is shown;

[0042] Figure 4 A schematic diagram of strategy 2 involved in the energy management control method of embodiment 2 is shown;

[0043] Figure 5 A schematic diagram of strategy 3 involved in the energy management control method of embodiment 2 is shown;

[0044] Figure 6 A schematic diagram of strategy 4 involved in the energy management control method of embodiment 2 is shown. DETAILED DESCRIPTION

[0045] Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to make the present disclosure more thorough and complete, and to fully convey the scope of the present disclosure to those skilled in the art.

[0046] As used herein, the term "including" and its variations mean open inclusion, i.e., "including but not limited to". Unless otherwise stated, the term "or" means "and / or". The term "based on" means "based at least in part on". The terms "an example embodiment" and "an embodiment" mean "at least one example embodiment". The term "another embodiment" means "at least one additional embodiment". The terms "first", "second", etc. may refer to different or the same objects. Other explicit and implicit definitions may also be included below.

[0047] Example 1

[0048] One embodiment of the present invention discloses a fuel cell vehicle energy management control method, such as Figure 1 As shown, the following steps are included:

[0049] S1. Divide the SOC of the power battery into N independent segments, and set each segment i to correspond to a fixed fuel cell output power P i ; Wherein, i = 1, ..., N;

[0050] Specifically, assuming that the critical points are SOC 1 , SOC 2 , SOC 3 ,…,SOC N-1 It should be noted that the critical points can be set at equal intervals or unequal intervals. In the independent segment, the first segment is [0, SOC 1 ], corresponding to the fuel cell output power P 1 , the second section is [SOC 1 ,SOC 2 ], corresponding to the fuel cell output power P 2 ,…, the Nth segment is [SOC N-1 , 100%], corresponding to the fuel cell output power P N ;

[0051] S2. When the fuel cell is running, the SOC of the power battery is identified in real time in the current segment j, and the fuel cell is controlled to output the power P that matches the segment. j ;

[0052] S3. Statistics of energy control parameters under the current working conditions are performed every T time (the time for determining the output power of the fuel cell), including the output power P of the fuel cell at each output power P in the T time before the statistical moment. i The running time t ik , fuel cell on / off times t 30 , the fuel cell output power P i Jump to another output power P j The number of jumps t ij ;

[0053] S4. Identify the fuel cell output power corresponding to the longest operating time, fine-tune the output power according to the number of times the fuel cell is turned on and off and the number of jumps related to the output power, and control the output power of the fuel cell in the next time T (i.e., the next cycle) according to the fine-tuning result (i.e., update the fuel cell output power in step S1, the parameter stored in the vehicle controller, used to control the fuel cell output within time T after the statistical moment).

[0054] Specifically, based on the number of times the fuel cell is turned on and off under the current operating conditions and the number of jumps related to the output power identified in step S4, a strategy is set to fine-tune the fuel cell output power indicator corresponding to the maximum operating time of step S4 set in the vehicle controller (vehicle controller) to solve the problems of frequent turning on and off and frequent load changes in the prior art.

[0055] The above energy management control method is applicable to any existing fuel cell vehicle, including new energy vehicles using any of hydrogen fuel cell engines, phosphoric acid fuel cell engines, methane fuel cell engines, hydrogen sulfide fuel cell engines, and hydrocarbon fuel cell engines.

[0056] When the fuel cell is in operation, the fuel cell output power corresponding to the longest operation time is adjusted every time T, that is, a fuel cell energy management control strategy with a changing rule is adopted to match the current operating conditions.

[0057] Compared with the prior art, the energy management control method for fuel cell vehicles provided in this embodiment adaptively adjusts the fuel cell output power based on the operating conditions, so that the fuel cell output power matches the vehicle operating power under the operating conditions, reduces the number of fuel cell startups and shutdowns and load changes, and improves the stability and durability of the fuel cell system.

[0058] Example 2

[0059] Based on the improvement of Example 1, the method further comprises the following steps:

[0060] S01. When the fuel cell is started, the SOC of the power battery at the current moment is obtained;

[0061] S02. Determine the SOC section j of the power battery, and further identify whether the section j is the section corresponding to the highest power. If so, control the fuel cell to shut down, otherwise execute the next step;

[0062] S03. Control the fuel cell output to match the set power P of the section j .

[0063] Preferably, the total number of independent sections N=4, and the serial numbers of the independent sections 1, 2, 3, 4 are set from small to large according to the SOC of the power battery, and the output power of the fuel cell meets P 4 <P 3 <P 2 <P 1 .

[0064] Preferably, P 4 =0.

[0065] When the fuel cell is started, the energy management control method also controls the output power of the fuel cell according to the SOC of the power battery, see steps S01 to S03, and the control process see Figure 2 , the control strategies involved are as follows:

[0066] 1. If the SOC of the power battery is greater than the set value SOC 3 , i.e. 100% ≤ SOC <SOC 3 , the fuel cell is shut down, that is, the output power is 0;

[0067] 2. If the SOC of the power battery is between the set value SOC 2 and SOC 3 Between, that is, SOC 2 <SOC<SOC 3 , fuel cell output power P 3 ;

[0068] 3. If the SOC of the power battery is between the set value SOC 1 and SOC 2 Between, that is, SOC 1 <SOC<SOC 2 , fuel cell output power P 2 ;

[0069] 4. If the SOC of the power battery is less than the set value SOC 1 , which is 0 <SOC<SOC 1 , fuel cell output power P 1 .

[0070] It can be seen that when the fuel cell is started, the energy management control method controls the output power of the fuel cell startup state according to the fixed fuel cell output power set in the vehicle controller, and in the running state after the fuel cell is started, the fuel cell output power corresponding to the longest running time is adjusted every time T (the parameter stored in the vehicle controller), that is, a fuel cell energy management control strategy with changing rules is adopted to match the changeable operating conditions, thereby reducing the number of fuel cell startup and shutdown times and the number of load changes, and improving the stability and durability of the fuel cell system.

[0071] During the operation of the fuel cell, the fuel cell output power P is constantly adjusted according to the changes in the operating conditions. 1 , P 2 and P 3 Make adjustments.

[0072] Preferably, during the operation of the fuel cell, step S4 further implements fine-tuning of the output power of the fuel cell through the following control strategy:

[0073] S41. Control strategy 1 (such as Figure 3 As shown): Identify the fuel cell at the output power P 3 The running time t 3k Is it the longest and meets the running time t 3k >t 2k >t 1k If yes, further identify the number of times the fuel cell is turned on and off within time T t 30 Greater than the lowered output power P 3 The benchmark number t 3n (obtained through calibration), the fuel cell output power P set in the vehicle controller is controlled 3 Reduce a set power step size P 3sub (obtained through calibration), otherwise, proceed to the next step;

[0074] S42. Control strategy 2 (such as Figure 5 As shown): Identify the fuel cell at the output power P 3 The running time t 3k Is it the longest and meets the running time t 3k >t 2k >t 1k , fuel cell on / off times t 30 Less than the lowered output power P 3 The benchmark number t 3n (obtained by calibration), if yes, further identify the fuel cell output power P within time T 3 Jump to output power P 2 The number of jumps t 32 Greater than the increased output power P3 The benchmark number t 3m When the output power P set in the vehicle controller is controlled 3 Increase the power step size P 3add (obtained through calibration), otherwise, proceed to the next step;

[0075] S43. Control strategy three (such as Figure 4 As shown): Identify the fuel cell at the output power P 2 Is the running time under the longest and meets the running time t 2k >t 3k >t 1k If yes, further identify the fuel cell output power P within time T 2 Jump to output power P 3 The number of jumps t 23 Greater than the lowered output power P 2 The benchmark number t 2n (obtained through calibration), the fuel cell output power P set in the vehicle controller is controlled 2 Reduce a set power step size P 2sub (obtained through calibration), otherwise, proceed to the next step;

[0076] S44. Control strategy 4 (such as Figure 6 As shown): Identify the fuel cell at the output power P 2 Is the running time under the longest and meets the running time t 2k >t 3k >t 1k If yes, further identify the fuel cell output power P within time T 2 Jump to output power P 1 The number of jumps t 21 Greater than the increased output power P 2 The benchmark number t 2m (obtained through calibration), controls the output power P set in the vehicle controller 2 Increase the power step size P 2add (obtained through calibration).

[0077] It should be noted that the above four control strategies can be used independently, and they are all optimization solutions that achieve the fastest control speed and the best control effect.

[0078] In order to make the solution clearer, the meaning of the variables is explained again here, t 1k ,t 2k ,t 3k They are the fuel cell output power P in the interval T. 1 , P 2 , P 3The corresponding running time, t 30 is the number of times the fuel cell is turned on and off within the time interval T, t 32 ,t 23 ,t 21 The output power P of the fuel cell during the interval T 3 Jump P 2 , P 2 Jump P 3 , P 2 Jump P 1 The number of times, P 3add , P 3sub , P 2add , P 2sub are the power step values ​​for fine-tuning the output power of the fuel cell, t 3m ,t 3n ,t 2m ,t 2n The setting is to determine whether to fine-tune the fuel cell output power P up and down. 3 and P 2 The benchmark number of times, after fine-tuning, still satisfies the relationship P 3 <P 2 <P 1 .

[0079] Preferably, the method further comprises the steps of:

[0080] S5. During the operation of the vehicle, the power battery is controlled to charge or discharge according to the difference between the vehicle's required power and the fuel cell's output power.

[0081] Specifically, step S5 further includes:

[0082] S51. During the operation of the vehicle, the required power of the vehicle and the output power of the fuel cell are obtained, and the difference between the required power of the vehicle and the output power of the fuel cell is obtained.

[0083] S52. When the difference between the vehicle power requirement and the output power of the fuel cell is greater than 0, the power battery is controlled to output a first discharge power, wherein the first discharge power is the difference between the vehicle power requirement and the output power of the fuel cell;

[0084] S53. When the difference between the vehicle's required power and the fuel cell's output power is less than 0, control the power battery to charge at a second charging power, wherein the second charging power is the difference between the fuel cell's output power and the vehicle's required power.

[0085] Preferably, in the first section, the SOC of the power battery is between 0 and 25% of the total power.

[0086] In the second section, the SOC of the power battery is between 25% and 50% of the total power.

[0087] In the third section, the SOC of the power battery is between 50% and 75% of the total power.

[0088] In the fourth section, the SOC of the power battery is between 75% and 100% of the total power.

[0089] Compared with the prior art, the energy management control method provided in this embodiment has the following beneficial effects:

[0090] 1. The control strategy of fuel cell output power can be adaptively adjusted according to the operating conditions, quickly adapting to the current vehicle operating conditions.

[0091] 2. Make the output power of the fuel cell match the current working conditions, reduce the number of fuel cell startups and shutdowns and load changes, and continuously optimize the control strategy of the fuel cell output power based on statistical data at intervals of T.

[0092] 3. No need to change the hardware. Based on the existing fuel cell vehicles, the main thing is to adjust the control program to greatly improve the control effect and effectively improve the user experience.

[0093] Example 3

[0094] The present invention also provides a fuel cell vehicle, comprising a fuel cell, a power battery, a battery power detection unit, and a vehicle controller.

[0095] Both the fuel cell and the power battery can provide power for the whole vehicle, and their respective power supply output terminals are connected to the power supply terminals of the electrical equipment on the whole vehicle. In addition, the fuel cell can also charge the power battery, and the power supply output terminal of the fuel cell is also connected to the charging terminal of the power battery.

[0096] The battery capacity detection unit is connected to the power supply end of the power battery to obtain the SOC of the power battery and transmit it to the vehicle controller.

[0097] The vehicle controller is used for controlling the output power of the fuel cell and the charging power and discharging power of the power battery in the energy management control method described in Example 1 or Example 2. Its input end is connected to the output end of the battery power detection unit, or through wireless data transmission, the output end is connected to the control end of the fuel cell and the power battery.

[0098] Preferably, the vehicle controller also has a display module, and the display screen of the display module displays the SOC of the power battery at the current moment.

[0099] The embodiments of the present disclosure have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The terms used herein are selected to best explain the principles of the embodiments, practical applications, or improvements over the prior art, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. A fuel cell vehicle energy management control method, It is characterized in that Includes steps: The SOC of the power battery is divided into N independent sections, and each section i is set to correspond to a fixed fuel cell output power P i ; Wherein, i = 1, ..., N; When the fuel cell is running, the current SOC segment j of the power battery is identified in real time, and the fuel cell is controlled to output the power P that matches the segment. j ; j = 1, ..., N; The energy control parameters under the current working condition are counted every T time, including the fuel cell output power P in the T time before the statistical moment. i The running time t ik , fuel cell on / off times, fuel cell output power P i Jump to output power P j The number of jumps t ij ; Identify the fuel cell output power corresponding to the longest operating time, and fine-tune the output power according to the number of times the fuel cell is turned on and off and the number of jumps related to the output power, so as to control the output of the fuel cell within the next time T; The steps also include: when the fuel cell is started, obtaining the SOC of the power battery at the current moment; Determine the SOC section j of the power battery, and further identify whether the section j is the section corresponding to the highest power. If so, control the fuel cell to shut down, otherwise execute the next step; Control the fuel cell output to match the set power P of this section j ; The total number of independent sections N=4, the sequence number of the independent sections is set from small to large according to the SOC of the power battery, and the output power of the fuel cell meets P 4 <P 3 <P 2 <P 1 ; P 4 =0, the step of identifying the fuel cell output power corresponding to the longest operation time, and fine-tuning the output power according to the number of times the fuel cell is turned on and off and the number of jumps related to the output power further includes: Identify the fuel cell at the output power P 3 The running time t 3k Is it the longest and meets the running time t 3k >t 2k >t 1k If yes, further identify the number of times the fuel cell is turned on and off within time T t 30 Greater than the lowered output power P 3 The benchmark number t 3n When the fuel cell output power P is set in the vehicle controller, 3 Reduce a set power step size P 3sub , otherwise, proceed to the next step; Identify the fuel cell at the output power P 2 Is the running time under the longest and meets the running time t 2k >t 3k >t 1k If yes, further identify the fuel cell output power P within time T 2 Jump to output power P 3 The number of jumps t 23 Greater than the lowered output power P 2 The benchmark number t 2n When the fuel cell output power P is set in the vehicle controller, 2 Reduce a set power step size P 2sub ; The step of identifying the output power of the fuel cell corresponding to the longest operation time and fine-tuning the output power according to the number of times the fuel cell is turned on and off and the number of jumps related to the output power also includes: Identify the fuel cell at the output power P 3 The running time t 3k Is it the longest and meets the running time t 3k >t 2k >t 1k , fuel cell on / off times t 30 Less than the lowered output power P 3 The benchmark number t 3n If yes, further identify the fuel cell output power P within time T 3 Jump to output power P 2 The number of jumps t 32 Greater than the increased output power P 3 The benchmark number t 3m When the output power P set in the vehicle controller is controlled 3 Increase the power step size P 3add , otherwise, proceed to the next step; Identify the fuel cell at the output power P 2 Is the running time under the longest and meets the running time t 2k >t 3k >t 1k If yes, further identify the fuel cell output power P within time T 2 Jump to output power P 1 The number of jumps t 21 Greater than the increased output power P 2 The benchmark number t 2m When the output power P set in the vehicle controller is controlled 2 Increase the power step size P 2add .

2. The fuel cell vehicle energy management control method according to claim 1, It is characterized in that The following steps are also included: During the operation of the vehicle, the charging or discharging of the power battery is controlled according to the difference between the vehicle's required power and the output power of the fuel cell.

3. The fuel cell vehicle energy management control method according to claim 2, It is characterized in that The step of controlling the charging or discharging of the power battery according to the difference between the vehicle demand power and the output power of the fuel cell further includes: When the difference between the vehicle demand power and the output power of the fuel cell is greater than 0, the power battery is controlled to output a first discharge power, wherein the first discharge power is the difference between the vehicle demand power and the output power of the fuel cell; When the difference between the vehicle's required power and the fuel cell's output power is less than 0, the power battery is controlled to be charged at a second charging power, wherein the second charging power is the difference between the fuel cell's output power and the vehicle's required power.

4. The fuel cell vehicle energy management control method according to claim 3, It is characterized in that In the first section, the SOC of the power battery is between 0 and 25% of the total power; in the second section, the SOC of the power battery is between 25% and 50% of the total power; in the third section, the SOC of the power battery is between 50% and 75% of the total power; in the fourth section, the SOC of the power battery is between 75% and 100% of the total power.

5. A fuel cell vehicle, It is characterized in that It includes a fuel cell, a power battery, a battery capacity detection unit, and a vehicle controller; among which, The battery power detection unit is connected to the power supply terminal of the power battery to obtain the SOC of the power battery; A vehicle controller, used to control the output power of the fuel cell according to the energy management control method according to any one of claims 1-4.

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