Multi-stack fuel cell system and control method thereof, and vehicle

A technology of a fuel cell system and a control method, which is applied to fuel cells, power system fuel cells, electric vehicles, etc., can solve problems such as battery performance degradation, long heating time of fuel cells, and slow startup.

Pending Publication Date: 2019-09-17
ZHENGZHOU YUTONG BUS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a multi-stack fuel cell system and its control method, and a vehicle to solve the problem of fuel cell temperature rise time in a low temperature environment and slow start-up, which lead to battery performance degradation
By warming first and then heating, part

Method used

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  • Multi-stack fuel cell system and control method thereof, and vehicle
  • Multi-stack fuel cell system and control method thereof, and vehicle
  • Multi-stack fuel cell system and control method thereof, and vehicle

Examples

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Embodiment 1

[0019] Embodiment 1 provides a vehicle, which is provided with a multi-stack fuel cell system and electrical components, wherein the stack module of the fuel cell can be composed of several stacks connected in series, such as figure 1 Shown is a structural diagram of a fuel cell system in which stacks are connected in series, including a series power supply circuit, which connects electrical components to supply power; in the series power supply circuit, the power supply circuit connects fuel cell stacks in series, and connects A corresponding short-circuit circuit is set between the positive and negative poles, and a control switch is set on the short-circuit circuit to control the opening or closing of the electric stack to which the control switch belongs, and then control the number of electric stacks actually running.

[0020] Such as figure 1 As shown, the system also includes a cooling water pipeline, the cooling water pipeline is connected to all electric stacks throug...

Embodiment 2

[0031] Embodiment 2 provides a vehicle, which is provided with a multi-stack fuel cell system and electrical components, wherein the stack module of the fuel cell can be composed of several stacks connected in parallel, such as image 3 Shown is the structure diagram of the fuel cell system in which stacks are connected in parallel, including a power supply circuit, which is connected to electric components for power supply; Control switches are respectively arranged on the branches to control the opening or closing of the electric stacks to which the control switches belong, and further control the number of electric stacks in actual operation.

[0032] Such as image 3 As shown, the system also includes a cooling water pipeline, the cooling water pipeline is connected to all electric stacks through a cooling branch, and an electromagnetic water valve can be set on each cooling branch connected to each electric stack to independently control the cooling of each electric stack...

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PUM

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Abstract

The invention relates to the technical field of fuel cell control, in particular to a multi-stack fuel cell system and a control method thereof and a vehicle. The vehicle comprises a fuel cell system and an electric element, the system comprises a controller, a series power supply circuit or a parallel power supply circuit, a cooling water pipeline and an air supply pipeline, the cooling water pipeline is connected with each electric pile through each cooling branch, the air supply pipeline is connected with each electric pile through each air supply branch, and each air supply branch is provided with an electromagnetic air valve; control switches for respectively controlling the electric piles are arranged in the series power supply circuit or the parallel power supply circuit; the output end of the controller is connected with each electromagnetic air valve and each control switch, the controller controls the control switches and the electromagnetic air valves to start part of the electric piles, and the heat generated by the controller can be supplied for the rapid temperature rise of other electric piles, so that the rapid temperature rise of the fuel cell system is achieved, and the problems that the performance of the cell is reduced and the use requirements of users cannot be met due to the fact that the temperature rise time of the fuel cell is long and the starting is slow in the low-temperature environment are solved.

Description

technical field [0001] The invention relates to the technical field of fuel cell control, in particular to a multi-stack fuel cell system, a control method thereof, and a vehicle. Background technique [0002] A fuel cell is a power generation device that directly converts the chemical energy of fuel and oxidant into electrical energy through an electrochemical reaction. It has the advantages of high energy conversion efficiency and no greenhouse gas emissions. It is suitable for automobiles, power stations, aerospace and other fields. Fuel cells have an optimal reaction temperature. For example, the optimal reaction temperature of proton exchange membrane fuel cells is 70-90°C. It is of great significance for fuel cells to start quickly, reach the optimal reaction temperature, and achieve efficient operation. [0003] The fuel cell system consists of a stack module, an air supply system, a hydrogen supply system, a water and heat management system, and a control system. The...

Claims

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Application Information

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IPC IPC(8): H01M8/04223H01M8/04225H01M8/04302H01M8/2465
CPCH01M8/04225H01M8/04268H01M8/04302H01M8/2465H01M2250/20B60L58/31B60L58/34Y02E60/50
Inventor 张龙海李飞强宋文帅李欣欣
Owner ZHENGZHOU YUTONG BUS CO LTD
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