CN-121989763-A - Energy management method and device for fuel cell vehicle and nonvolatile storage medium

CN121989763ACN 121989763 ACN121989763 ACN 121989763ACN-121989763-A

Abstract

The invention discloses an energy management method and device for a fuel cell vehicle and a nonvolatile storage medium. The method comprises the steps of obtaining the whole vehicle required power of a fuel cell vehicle, selecting a target output power gear with moderate power meeting preset conditions among a plurality of output power gears corresponding to the fuel cell, selecting output power corresponding to the target output power gear as initial output power of the fuel cell according to a preset corresponding relation between the output power gear and the output power of the fuel cell, determining the target output power corresponding to the fuel cell based on a power limiting rule corresponding to the fuel cell and the initial output power, and determining the target output power corresponding to the power cell based on the whole vehicle required power, the power limiting rule corresponding to the power cell and the initial output power of the fuel cell. The invention solves the technical problem that the power determination of the current fuel cell automobile can not be suitable for various scenes only by an optimization algorithm or regular adjustment.

Inventors

LOU XUKUAN
ZHANG QINGHUA
CHEN PENG

Assignees

未势能源科技有限公司

Dates

Publication Date: 20260508
Application Date: 20241106

Claims (10)

1. A method of energy management for a fuel cell vehicle, comprising: acquiring the whole vehicle required power of a fuel cell vehicle; Selecting a target output power gear with moderate power meeting preset conditions in a plurality of preset output power gears corresponding to fuel cells in the fuel cell vehicle; Selecting the output power corresponding to the target output power gear as the initial output power of the fuel cell according to a preset corresponding relation between the output power gear and the output power of the fuel cell; Determining a target output power corresponding to the fuel cell based on a preset power limiting rule corresponding to the fuel cell and an initial output power of the fuel cell; And determining the target output power corresponding to the power battery based on the whole vehicle required power, the power limiting rule corresponding to the power battery in the fuel battery vehicle and the initial output power of the fuel battery.
2. The method according to claim 1, characterized by, before selecting a target output power gear in which the equivalent power meets a preset condition in a plurality of output power gears corresponding to fuel cells in the preset fuel cell vehicle, comprising: Determining an optimization operator curve based on a preset equivalent minimum hydrogen consumption formula and a battery state corresponding to the fuel cell; Determining optimization operators corresponding to the output power gears according to the optimization operator curves; And determining the equivalent power corresponding to each of the plurality of output power gears according to the optimizing operator corresponding to each of the plurality of output power gears, the required power of the whole vehicle and the output power of the fuel cell corresponding to each of the plurality of output power gears.
3. The method of claim 2, comprising, prior to said determining an optimization operator for each of said plurality of output power gears from said optimization operator curve: Setting a power step length, wherein the power step length represents a power range corresponding to one output power gear; acquiring an output power range corresponding to the fuel cell; and setting the plurality of output power gears according to the output power range of the fuel cell and the power step.
4. The method according to claim 1, wherein the determining the target output power corresponding to the fuel cell based on the preset power limit rule corresponding to the fuel cell and the initial output power of the fuel cell, wherein the power limit rule corresponding to the fuel cell includes the maximum output power of the fuel cell and the minimum output power of the fuel cell, includes: Judging whether the initial output power corresponding to the fuel cell is positioned between the maximum output power and the minimum output power; And determining that the initial output power corresponding to the fuel cell is the target output power of the fuel cell when the initial output power corresponding to the fuel cell is between the maximum output power and the minimum output power.
5. The method of claim 1, wherein the determining the target output power corresponding to the power cell based on the vehicle demand power, a power limitation rule corresponding to the power cell in the fuel cell vehicle, and the initial output power of the fuel cell, comprises: Determining the initial output power corresponding to the power battery according to the whole vehicle required power and the initial output power corresponding to the fuel battery; And determining the actual output power corresponding to the power battery according to the power limiting rule corresponding to the power battery and the initial output power corresponding to the power battery.
6. The method of claim 5, comprising, prior to said determining an actual output power for said power cell based on said power limit rule for said power cell and said initial output power for said power cell: acquiring a target battery state of the power battery; And selecting a power limiting rule corresponding to the target battery state based on a corresponding relation between the preset battery state and the power limiting rule of the power battery.
7. The method according to any one of claims 1 to 6, further comprising: Acquiring motor output power limiting rules corresponding to the motor states respectively; Determining a target motor output power limit rule according to a motor state in the fuel cell vehicle; and determining the actual output power of the motor according to the target motor output power limiting rule and the whole vehicle required power.
8. An energy management device for a fuel cell vehicle, comprising: the acquisition module is used for acquiring the whole vehicle required power of the fuel cell vehicle; the first selecting module is used for selecting a target output power gear with moderate power meeting preset conditions in a plurality of preset output power gears corresponding to the fuel cells in the fuel cell vehicle; the second selecting module is used for selecting the output power corresponding to the target output power gear as the initial output power of the fuel cell according to the preset corresponding relation between the output power gear and the output power of the fuel cell; a first determining module, configured to determine a target output power corresponding to the fuel cell based on a preset power limiting rule corresponding to the fuel cell and an initial output power of the fuel cell; And the second determining module is used for determining the target output power corresponding to the power battery based on the whole vehicle required power, the power limiting rule corresponding to the power battery in the fuel battery vehicle and the initial output power of the fuel battery.
9. A nonvolatile storage medium, characterized in that the nonvolatile storage medium includes a stored program, wherein the program, when run, controls a device in which the nonvolatile storage medium is located to execute the energy management method of the fuel cell vehicle according to any one of claims 1 to 7.
10. A computer device is characterized by comprising a memory and a processor, The memory stores a computer program; The processor configured to execute a computer program stored in the memory, the computer program when executed causing the processor to execute the energy management method of the fuel cell vehicle according to any one of claims 1 to 7.

Description

Energy management method and device for fuel cell vehicle and nonvolatile storage medium Technical Field The present invention relates to the field of fuel cell vehicle control technology, and in particular, to an energy management method and apparatus for a fuel cell vehicle, and a nonvolatile storage medium. Background Current energy management strategies are mainly rule-based and optimization-based. The rule-based energy management strategy is to determine an energy distribution mode in a system through preset rules or logic judgment conditions, but has a plurality of defects, for example, the determined rules can only adapt to partial scenes of vehicle operation, the situation that performance such as the dynamic property, economy, fuel cell efficiency and durability of the whole vehicle are out of date often occurs, and the establishment of parameters through related rules needs to be based on experience of engineers, so that the method has certain limitation. The energy management strategy based on optimization refers to a management strategy for determining the optimal distribution and use modes of energy in a system through a mathematical optimization method, and the main disadvantage of the strategy is that the optimization algorithm generally has too high requirement on the computing capacity of the system, so that the whole vehicle control system is difficult to meet. In view of the above problems, no effective solution has been proposed at present. Disclosure of Invention The embodiment of the invention provides an energy management method and device for a fuel cell vehicle and a nonvolatile storage medium, which at least solve the technical problem that the power determination of the current fuel cell vehicle cannot be suitable for various scenes only by an optimization algorithm or regular adjustment. According to one aspect of the embodiment of the invention, an energy management method of a fuel cell vehicle is provided, and the energy management method comprises the steps of obtaining the whole vehicle required power of the fuel cell vehicle, selecting a target output power gear with moderate power meeting preset conditions in a plurality of output power gears corresponding to the fuel cells in the preset fuel cell vehicle, selecting output power corresponding to the target output power gear as initial output power of the fuel cells according to a preset corresponding relation between the output power gear and the output power of the fuel cells, determining the target output power corresponding to the fuel cells based on a preset power limit rule corresponding to the fuel cells and the initial output power of the fuel cells, and determining the target output power corresponding to the power cells based on the whole vehicle required power, a power limit rule corresponding to the power cells in the fuel cell vehicle and the initial output power of the fuel cells. Optionally, before selecting a target output power gear with moderate power meeting preset conditions in a plurality of output power gears corresponding to a fuel cell in a preset fuel cell vehicle, determining an optimization operator curve based on a preset equivalent minimum hydrogen consumption formula and a battery state corresponding to the fuel cell, determining an optimization operator corresponding to each of the plurality of output power gears according to the optimization operator curve, and determining equivalent power corresponding to each of the plurality of output power gears according to the optimization operator corresponding to each of the plurality of output power gears, the required power of the whole vehicle and the output power of the fuel cell corresponding to each of the plurality of output power gears. Optionally, before determining the optimizing operator corresponding to each of the plurality of output power gears according to the optimizing operator curve, setting a power step, wherein the power step represents a power range corresponding to one output power gear, acquiring an output power range corresponding to the fuel cell, and setting the plurality of output power gears according to the output power range and the power step of the fuel cell. Optionally, determining the target output power corresponding to the fuel cell based on a preset power limiting rule corresponding to the fuel cell and an initial output power of the fuel cell, wherein the power limiting rule corresponding to the fuel cell comprises a maximum output power of the fuel cell and a minimum output power of the fuel cell, and the method comprises judging whether the initial output power corresponding to the fuel cell is between the maximum output power and the minimum output power, and determining that the initial output power corresponding to the fuel cell is the target output power of the fuel cell when the initial output power corresponding to the fuel cell is between the maximum output power and the minimum output power. Optionally,