Fuel cell control method and device, battery management system and vehicle
A fuel cell and control method technology, which is applied in the direction of fuel cells, power system fuel cells, circuits, etc., can solve the problems of fuel cells that cannot be charged by power cells, fuel cell performance degradation, etc.
Active Publication Date: 2022-07-22
GREAT WALL MOTOR CO LTD
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Problems solved by technology
However, in the current process of using fuel cells to charge power batteries, if the performance of a single cell in the fuel cell decreases, it will lead to a decrease in the overall performance of the fuel cell, which in turn will cause the fuel cell to fail to charge the power battery.
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[0060] The following describes in detail the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary, and are intended to explain the present invention and should not be construed as limiting the present invention.
[0061] The following describes the fuel cell control method and device, the battery management system, and the vehicle according to the embodiments of the present invention with reference to the accompanying drawings.
[0062] figure 1 It is a schematic flowchart of a control method for a fuel cell according to an embodiment of the present disclosure. like figure 1 As shown, the method specifically includes the following steps:
[0063] S101. Obtain the remaining power of the battery ...
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The invention discloses a fuel cell control method and device, a battery management system and a vehicle. The method includes: acquiring the remaining power of a battery to be charged; and determining a fuel cell according to the power interval to which the remaining power of the battery to be charged belongs. The output power in the electric quantity interval; controlling the fuel cell to charge the battery to be charged at a constant output power, wherein the fuel cell is controlled to output a constant voltage at least within a preset time during the charging process . The method controls the fuel cell to use a constant output power and charge the rechargeable battery with a constant voltage within a certain period of time within the power range to which the remaining power of the battery to be charged belongs, so that when the performance of the single cell of the fuel cell decreases, the fuel cell The battery to be charged can still be charged with a suitable output voltage, which avoids the situation that the performance of the fuel cell is degraded and the battery to be charged cannot be normally charged due to the low output voltage of the fuel cell.
Description
technical field [0001] The present invention relates to the technical field of fuel cells, in particular to a control method and device for a fuel cell, a battery management system and a vehicle. Background technique [0002] With the increasing lack of energy and increasingly serious environmental pollution, automobile manufacturers all over the world have turned their attention to electric vehicles. need. At present, in order to improve the cruising range of electric vehicles, fuel cells are often installed in vehicles to charge power batteries. Among them, a fuel cell is an energy conversion device using hydrogen energy, which directly converts the chemical energy of the reaction between hydrogen and oxygen into electrical energy to supplement electrical energy for the power battery in the vehicle. However, in the current process of using a fuel cell to charge a power battery, when the performance of a single cell in the fuel cell is degraded, the overall performance of...
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IPC IPC(8): H01M8/04858
CPCH01M8/04925H01M8/04865H01M2250/20Y02E60/50
Inventor 吴麦青宋海军宋丹丹贺庆书郝阳王林啸申亚洲张庚楠武福龙
Owner GREAT WALL MOTOR CO LTD