CN-118849793-B - Fuel cell parameter determination method and device and electronic equipment

CN118849793BCN 118849793 BCN118849793 BCN 118849793BCN-118849793-B

Abstract

The present disclosure relates to a method, a device and an electronic device for determining parameters of a fuel cell, and relates to the field of vehicles, wherein the method comprises the steps of obtaining a plurality of operation data of a vehicle within a set time range; and determining a decay rate and a decay rate of the fuel cell based on the target current and the plurality of operational data. The attenuation states of the vehicle fuel cell at different times can be monitored by calculating the attenuation rate and the attenuation rate of the vehicle fuel cell within a set time range, and theoretical support can be provided for a follow-up fuel cell operation optimization strategy.

Inventors

DU BING
DENG HONG
YAO DONGSHENG

Assignees

北汽福田汽车股份有限公司

Dates

Publication Date: 20260508
Application Date: 20240624

Claims (8)

1. A method of determining parameters of a fuel cell for use with a large data platform, the method comprising: Acquiring a plurality of running data of a vehicle in a set time range; Determining a target current of a fuel cell of the vehicle from the plurality of operation data; Determining a decay rate and a decay rate of the fuel cell based on the target current and the plurality of operating data; Wherein each of the plurality of operation data includes a fuel cell stack output power and a fuel cell stack output current, the determining a target current of a fuel cell of the vehicle from the plurality of operation data includes: determining a power interval to which each operation data belongs according to the output power of the fuel cell stack in each operation data, wherein each power interval corresponds to at least one operation data; Determining a target current corresponding to the power interval according to the at least one operation data corresponding to the power interval; each of the plurality of operating data includes an average monolithic voltage of the fuel cell and a fuel cell operating time period, and the determining the decay rate and the decay rate of the fuel cell based on the target current and the plurality of operating data includes: determining at least one target operation data according to the fuel cell stack output current and the target current of each operation data in the at least one operation data corresponding to the power interval; Determining a decay rate of the fuel cell in the power section according to the average monolithic voltage of the fuel cell in each target operation data; And determining the decay rate of the fuel cell in the power interval according to the average monolithic voltage of the fuel cell and the working time length of the fuel cell in each target operation data.
2. The method of claim 1, wherein the determining the target current corresponding to the power interval from the at least one operational data corresponding to the power interval comprises: determining the fuel cell stack output current with the largest occurrence number from the at least one operation data corresponding to the power interval; and taking the fuel cell current with the largest occurrence number corresponding to the power interval as a target current corresponding to the power interval.
3. The method of claim 1, wherein said determining at least one target operating data from said fuel cell stack output current and said target current for each of at least one operating data for said power interval comprises: for each of at least one operation data corresponding to the power interval, determining the operation data as the target operation data when a difference between the fuel cell stack output current of the operation data and the target current is within a set range.
4. The method of claim 1, wherein said determining a decay rate of said fuel cell at said power interval from said average monolithic voltage of said fuel cell in each of said target operating data comprises: the decay rate of the fuel cell in the power section is described by the following formula: Wherein, the Representing a decay rate of the fuel cell in the power zone; representing a quantity of the at least one target operational data; representing a front of the at least one target operation data arranged in the order of the fuel cell operation time from early to late An average value of the average monolithic voltages of the fuel cells in the respective target operation data; representing the front part The first of the target operation data Average monolithic voltage of the fuel cell in the individual target operating data; Representing a later one of the at least one target operation data arranged in the order of the fuel cell operation time from early to late An average value of the average monolithic voltages of the fuel cells in the respective target operation data; Representing the rear part The first of the target operation data The fuel cell average monolithic voltage in each operating data.
5. The method of claim 1, wherein said determining a decay rate of said fuel cell in said power interval based on said fuel cell average monolithic voltage and said fuel cell operating time duration in each of said target operating data comprises: performing linear fitting on the average single-chip voltage of the fuel cell and the working time length of the fuel cell in each target operation data to determine a fitting function; and taking the slope of the fitting function as the decay rate of the fuel cell in the power interval.
6. The method according to any one of claims 1-5, further comprising: Acquiring the plurality of running data, the attenuation rate and the attenuation rate of at least one vehicle from the big data platform according to screening conditions, wherein the screening conditions comprise at least one of quarterly, year, self-defined time interval, vehicle identification code and vehicle bulletin number; The plurality of operating data, the decay rate, and the decay rate of the at least one vehicle are visually displayed.
7. A parameter determination apparatus for a fuel cell, applied to a large data platform, the apparatus comprising: The acquisition module is used for acquiring a plurality of running data of the vehicle within a set time range; A first determination module for determining a target current of a fuel cell of the vehicle from the plurality of operation data; a second determination module that determines a decay rate and a decay rate of the fuel cell based on the target current and the plurality of operational data; Wherein each of the plurality of operation data includes a fuel cell stack output power and a fuel cell stack output current, the determining a target current of a fuel cell of the vehicle from the plurality of operation data includes: determining a power interval to which each operation data belongs according to the output power of the fuel cell stack in each operation data, wherein each power interval corresponds to at least one operation data; Determining a target current corresponding to the power interval according to the at least one operation data corresponding to the power interval; each of the plurality of operating data includes an average monolithic voltage of the fuel cell and a fuel cell operating time period, and the determining the decay rate and the decay rate of the fuel cell based on the target current and the plurality of operating data includes: determining at least one target operation data according to the fuel cell stack output current and the target current of each operation data in the at least one operation data corresponding to the power interval; Determining a decay rate of the fuel cell in the power section according to the average monolithic voltage of the fuel cell in each target operation data; And determining the decay rate of the fuel cell in the power interval according to the average monolithic voltage of the fuel cell and the working time length of the fuel cell in each target operation data.
8. An electronic device, comprising: A memory having a computer program stored thereon; A processor for executing the computer program in the memory to implement the steps of the method of any one of claims 1-6.

Description

Fuel cell parameter determination method and device and electronic equipment Technical Field The disclosure relates to the field of vehicles, and in particular relates to a method and a device for determining parameters of a fuel cell and electronic equipment. Background Fuel cell vehicles are in a high-speed development stage, so that a large amount of operation data of the fuel cell vehicles needs to be analyzed to verify the reliability and the attenuation state of the fuel cell system and provide theoretical support for the optimization of the subsequent operation strategy of the fuel cell. Disclosure of Invention In order to overcome the problems in the related art, the present disclosure provides a method and apparatus for determining parameters of a fuel cell, and an electronic device. According to a first aspect of embodiments of the present disclosure, there is provided a parameter determining method of a fuel cell, applied to a big data platform, the method including: Acquiring a plurality of running data of a vehicle in a set time range; Determining a target current of a fuel cell of the vehicle from the plurality of operation data; and determining the decay rate and the decay rate of the fuel cell according to the target current and the plurality of operation data. Optionally, each of the plurality of operation data includes a fuel cell stack output power, the determining a target current of a fuel cell of the vehicle by the plurality of operation data includes: Determining a power interval to which each operation data belongs according to the output power of the fuel cell stack in each operation data, wherein each power interval corresponds to at least one operation data; and determining a target current corresponding to the power interval according to the at least one operation data corresponding to the power interval. Optionally, each of the plurality of operation data includes a fuel cell stack output current, and the determining the target current corresponding to the power interval according to the at least one operation data corresponding to the power interval includes: determining the fuel cell stack output current with the largest occurrence number from the at least one operation data corresponding to the power interval; and taking the fuel cell current with the largest occurrence number corresponding to the power interval as a target current corresponding to the power interval. Optionally, each of the plurality of operating data includes a fuel cell stack output power, a fuel cell stack output current, a fuel cell average monolithic voltage, and a fuel cell operating duration; The determining the decay rate and decay rate of the fuel cell from the target current and the plurality of operating data comprises: determining at least one target operation data according to the fuel cell stack output current and the target current of each operation data in the at least one operation data corresponding to the power interval; Determining a decay rate of the fuel cell in the power section according to the average monolithic voltage of the fuel cell in each target operation data; And determining the decay rate of the fuel cell in the power interval according to the average monolithic voltage of the fuel cell and the working time length of the fuel cell in each target operation data. Optionally, the determining at least one target operation data according to the fuel cell stack output current and the target current of the power section corresponding to each operation data of at least one operation data includes: for each of at least one operation data corresponding to the power interval, determining the operation data as the target operation data when a difference between the fuel cell stack output current of the operation data and the target current is within a set range. Optionally, the determining the attenuation rate of the fuel cell in the power section according to the average monolithic voltage of the fuel cell in each of the target operation data includes: the decay rate of the fuel cell in the power section is described by the following formula: wherein μ represents an attenuation rate of the fuel cell in the power section; K represents the number of the at least one target operation data; Means for representing an average value of fuel cell average monolithic voltages in the first J target operation data after the at least one target operation data is arranged in the order of the fuel cell operation time from early to late, U j means a fuel cell average monolithic voltage in the J-th target operation data in the first J target operation data; And U i represents the average value of the average single-chip voltage of the fuel cells in the ith operating data in the last I target operating data after the at least one target operating data is arranged in the order of the operating time of the fuel cells from the early to the late. Optionally, the determining the decay rate of the fuel cell i