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Vehicle energy management method and device, vehicle and storage medium

An energy management and vehicle technology, applied in vehicle energy storage, vehicle components, battery/fuel cell control devices, etc., can solve problems that affect the service life and do not fully fit the operating characteristics of fuel cells

Active Publication Date: 2021-03-26
FAW JIEFANG AUTOMOTIVE CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the operating point of the fuel cell will still be constantly adjusted and changed with the changes in the demand for electric power of the vehicle and the allowable charging power of the power battery. Although the frequent fluctuation of the output power of the fuel cell is reduced to a certain extent, the Does not fully fit the operating characteristics of the fuel cell, affecting its service life

Method used

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  • Vehicle energy management method and device, vehicle and storage medium
  • Vehicle energy management method and device, vehicle and storage medium
  • Vehicle energy management method and device, vehicle and storage medium

Examples

Experimental program
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Embodiment 1

[0054] figure 2 It is a flow chart of a vehicle energy management method provided by Embodiment 1 of the present invention. This embodiment is applicable to the situation of managing the state of charge of the vehicle power battery and the output power of the fuel cell. This method can be executed by the vehicle system. Such as figure 2 As shown, it specifically includes the following steps:

[0055] Step 210, according to the state of charge of the power battery and the current temperature, determine the preset output power of the fuel cell and the first correction parameter.

[0056] Wherein, the preset output power of the fuel cell can be pre-calibrated according to the total energy and state of charge of the power battery. For example, according to the total energy of the power battery, the first threshold, the second threshold and the third threshold of the state of charge of the power battery are determined. If the state of charge of the power battery is less than o...

Embodiment 2

[0071] Figure 4 It is a flow chart of a vehicle energy management method provided by Embodiment 2 of the present invention. This embodiment is embodied on the basis of the foregoing embodiments. Such as Figure 4 As shown, in this embodiment, the method may also include:

[0072] Step 410, according to the state of charge of the power battery and the current temperature, determine the preset output power of the fuel cell and the first correction parameter.

[0073] In this embodiment, the preset output power of the fuel cell can be determined according to the state of charge of the power battery; the first correction parameter can be determined according to the state of charge of the power battery and the current temperature.

[0074] In one embodiment, the step of determining the first correction parameter of the fuel cell includes:

[0075] Determine the allowable charging power of the power battery according to the minimum load change interval of the fuel cell, the tota...

Embodiment 3

[0122] Figure 6 It is a structural diagram of a vehicle energy management device provided by Embodiment 3 of the present invention. This device can be used to manage the state of charge of the vehicle power battery and the output power of the fuel cell to improve the service life of the fuel cell and the power supply of the vehicle. network security. The device can be realized by software and / or hardware and is generally integrated in the vehicle system.

[0123] Such as Figure 6 As shown, the device includes:

[0124] A determination module 610, configured to determine the preset output power of the fuel cell and the first correction parameter according to the state of charge of the power battery and the current temperature;

[0125] A correction module 620, configured to correct the output power of the fuel cell based on the first correction parameter to obtain the corrected output power if the preset output power is greater than the first correction parameter;

[0126...

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Abstract

The invention discloses a vehicle energy management method and device, a vehicle and a storage medium, and the method comprises the steps: determining the preset output power and a first correction parameter of a fuel cell according to the state of charge and the current temperature of a power battery; if the preset output power is greater than the first correction parameter, correcting the outputpower of the fuel cell based on the first correction parameter to obtain corrected output power; and controlling the vehicle to operate based on the corrected output power and the state of charge torealize energy management of the vehicle. According to the method, the output power of the fuel cell is corrected under the state of charge of the power cell and the current temperature, then the vehicle is controlled to run, energy management of the vehicle is achieved, the fuel cell runs under the required output characteristic on the premise that the power requirement of the whole vehicle is met, the power cell cannot be overcharged, and the service life of the fuel cell and the safety of the vehicle power supply network are improved.

Description

technical field [0001] Embodiments of the present invention relate to fuel cell vehicle technology, and in particular to a vehicle energy management method, device, vehicle and storage medium. Background technique [0002] Fuel cell vehicles can be equipped with two energy sources, one is a fuel cell and the other is a power battery. The characteristics of fuel cell operation are: slow response, and it is not easy to change load frequently. However, the electricity demand of the whole vehicle has the characteristics of large fluctuations and rapid changes. Therefore, it is necessary to match the power battery to alleviate the contradiction between the vehicle's electricity demand and the fuel cell. The purpose of vehicle energy management is to manage the output state of the fuel cell and the state of charge of the power battery, and make it run in a reasonable working state based on the operating characteristics of the fuel cell and power battery, so as to provide electri...

Claims

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Application Information

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IPC IPC(8): B60L58/40
CPCB60L58/40Y02T10/70
Inventor 徐靖斌纪永飞马艳红薛选峰沙彦红蔡文文
Owner FAW JIEFANG AUTOMOTIVE CO
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