Fuel cell electric automobile power optimization method

A fuel cell and power optimization technology, applied in the field of automobiles, can solve problems such as short cruising range, unreasonable energy utilization of the vehicle, soft output characteristics of the fuel cell, and cannot respond to the power demand of the vehicle in real time, so as to improve energy use efficiency , Improve the mileage of the vehicle and optimize the effect of the principle of energy distribution

Pending Publication Date: 2019-09-24
JIANGLING MOTORS
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Problems solved by technology

[0002] Due to the fact that the output characteristics of the fuel cell are soft and cannot respond to the power demand of the vehicle in real time, the power distribution strategy of fuel cell vehicles generally adopts a switch control strategy, that is, when the SOC value of the power battery is less than a certain value, the fuel cell engine (FCE) is turned on. , and keep the FCE running at the rated power point, and pursue the stable power output of the FCE. When the SOC is greater than a certain value, the FCE is turned off, and the power battery provides energy alone. In this solu

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  • Fuel cell electric automobile power optimization method

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[0020] Below in conjunction with accompanying drawing and embodiment the present invention is further described:

[0021] see figure 1 .

[0022] The invention discloses a method for power optimization of a fuel cell electric vehicle, the method comprising the following steps,

[0023] Step 1: Calculate the power used by the whole vehicle;

[0024] Step 2: Allocate power according to the state of the SOC;

[0025] Step 3: power correction;

[0026] Step 4: Power output.

[0027] In the step 1, the power used by the whole vehicle is the sum of the power used by the motor drive, the power used by the high-voltage accessory DCDC, the power used by the power steering EPS, the power used by the air pump APCM, the power used by the air conditioner compressor, and the power used by the PTC.

[0028] The allocation of the second step includes four stages:

[0029] Stage 1: When SOC>90% is the flameout stage, the fuel cell engine is controlled not to start, and only the power bat...

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Abstract

The invention relates to the technical field of automobiles, in particular to a fuel cell electric automobile power optimization method. The method includes the following steps that step 1: automobile use power is calculated; step 2: the power is calculated according to the state of a SOC; step 3: power correction is conducted; and step 4: power output is conducted. According to the fuel cell electric automobile power optimization method, automobile energy use efficiency can be improved, automobile economy is improved, and the principle of energy distribution is optimized, so that endurance mileage is improved, and the automobile energy use efficiency can be improved, the automobile economy is improved, and the principle of the energy distribution is optimized, so that the endurance mileage is improved.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to a power optimization method for a fuel cell electric vehicle. Background technique [0002] Due to the fact that the output characteristics of the fuel cell are soft and cannot respond to the power demand of the vehicle in real time, the power distribution strategy of fuel cell vehicles generally adopts a switch control strategy, that is, when the SOC value of the power battery is less than a certain value, the fuel cell engine (FCE) is turned on. , and keep the FCE running at the rated power point, and pursue the stable power output of the FCE. When the SOC is greater than a certain value, the FCE is turned off, and the power battery provides energy alone. In this solution, the vehicle system does not operate at the optimum point of efficiency and cannot guarantee the hydrogen tank. Hydrogen-priority power battery energy is used up first, which leads to the problem of unreas...

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Application Information

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IPC IPC(8): B60L58/12B60L58/40B60L58/31B60L53/00
CPCB60L58/12B60L58/40B60L58/31B60L53/00Y02T90/40Y02T10/70Y02T90/14Y02T10/7072
Inventor 魏广杰李立闯刘永周慧娟游道亮
Owner JIANGLING MOTORS
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