Fuel cell control method and device, cell management system and vehicle
A fuel cell and control method technology, applied in the direction of fuel cells, power system fuel cells, circuits, etc., can solve the problems such as the inability of the fuel cell to charge the power battery and the deterioration of the fuel cell performance.
Active Publication Date: 2021-05-04
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] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.
[0061] A method and device for controlling a fuel cell, a battery management system, and a vehicle according to embodiments of the present invention will be described below with reference to the accompanying drawings.
[0062] figure 1 It is a schematic flowchart of a fuel cell control method according to an embodiment of the present invention. Such as figure 1 As shown, the method specifically includes the following steps:
[0063] S101. Obtain the remaining power of the battery to be charged.
[0064] Generally, a power sen...
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The invention discloses a fuel cell control method and device, a cell management system and a vehicle. The method comprises the following steps: acquiring the residual electric quantity of a to-be-charged cell; according to the electric quantity interval to which the remaining electric quantity of the to-be-charged cell belongs, determining the output power of a fuel cell in the electric quantity interval; and controlling the fuel cell to charge the to-be-charged cell at the constant output power, wherein the fuel cell is controlled to output constant voltage at least within preset time in a charging process. According to the method, in the electric quantity interval to which the residual electric quantity of a to-be-charged cell belongs, the fuel cell is controlled to adopt constant output power and charge the to-be-charged cell at constant voltage within a certain time, so when the single cell performance of the fuel cell is reduced, the fuel cell can still charge the to-be-charged cell at proper output voltage, and the conditions that the performance of the fuel cell is reduced and the to-be-charged cell cannot be normally charged due to over-low output voltage of the fuel cell are avoided.
Description
technical field [0001] The invention relates to the technical field of fuel cells, in particular to a fuel cell control method and device, 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. However, due to the limited battery technology, the driving range of electric vehicles is far from meeting the long-distance needs. need. At present, in order to increase the cruising range of an electric vehicle, a fuel cell for charging a power battery is often installed in the vehicle. Among them, the fuel cell is an energy conversion device that utilizes 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 us...
Claims
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Login to View More 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