A cooling system with enhanced heat transfer and effective maintenance of stack temperature uniformity

A technology that strengthens heat transfer and cooling systems. It is applied in climate sustainability, circuits, fuel cells, etc. It can solve problems such as easy leakage of coolant, uneven temperature distribution of stacks, and poor cooling effect, so as to ensure uniform temperature distribution. performance, leakage prevention, and usage reduction

Active Publication Date: 2017-11-10
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Most of the existing designs have problems such as poor cooling effect, uneven temperature distribution inside the stack after cooling, and easy leakage of coolant. Therefore, reasonable thermal management will be the key to ensure the working efficiency and quick start of the fuel cell.

Method used

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  • A cooling system with enhanced heat transfer and effective maintenance of stack temperature uniformity
  • A cooling system with enhanced heat transfer and effective maintenance of stack temperature uniformity
  • A cooling system with enhanced heat transfer and effective maintenance of stack temperature uniformity

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Embodiment Construction

[0027] figure 1 It is one of the core components of the present invention. The cooling plate 1 adopts a four-channel structure, and the existing cooling channels mostly adopt structures such as straight channels and serpentine channels. figure 1 There are multiple continuous bending structures in the cooling channel, which can promote the coolant to generate secondary flow, vortex and other hydrodynamic phenomena in the flow channel. This flow phenomenon will help break the thermal boundary layer in the cooling channel and improve Strengthen the heat transfer factor and increase the heat transfer efficiency. In the adjacent cooling channels in the cooling plate, the cooling liquid flows in the opposite direction, figure 1 It has been marked that this arrangement helps to prevent hot and cold areas in the battery board and ensure the normal operation of the fuel cell.

[0028] figure 1 1 slot in the middle cooling plate, figure 2 Medium rubber sealing ring 6, image 3 The...

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Abstract

A cooling system that enhances heat transfer and effectively maintains the temperature uniformity of the stack. The surface of the cooling plate is processed with a sealing groove, and the sealing groove is combined with a rubber sealing ring and a cooling plate cover to form a sealing structure. Each battery unit is stacked, and one side is connected to the upper fixing structure, and the other side is connected to the lower fixing structure. The upper fixing structure and the lower fixing structure are fixed and combined by four sets of symmetrical bolts and nuts to form a fuel cell stack together. The liquid inlet channels and the liquid outlet channels are in a cross arrangement structure, and the liquid inlet channels and the liquid outlet channels are in a bent and continuous structure, and the flow direction of the cooling liquid in each adjacent liquid inlet channel and liquid outlet channel is opposite. In order to prevent the temperature of the cooling plate at the inlet end of the cooling liquid from being too low and the temperature of the cooling plate at the cooling liquid outlet end from being too high, the flow direction of the cooling liquid in the adjacent cooling channels in the cooling plate is set to be opposite to ensure the uniformity of the temperature in the cooling plate .

Description

technical field [0001] Each component of the invention provides a cooling system that can be used to effectively control the internal temperature of the fuel cell stack, ensure the uniformity of the internal temperature of the fuel cell stack, and reduce the leakage of coolant, and belongs to the technical field of fuel cell stack thermal management. Background technique [0002] In the 21st century, mankind's demand for energy is increasing, but the traditional fossil energy that exists on the earth is limited and is being consumed every moment. In the next few decades, human beings need to find new alternative energy to meet demand, and hydrogen energy will become one of the most important energy sources for human beings. A fuel cell is a device that can directly convert chemical energy into electrical energy through an electrochemical reaction, and this process is not limited by the Carnot cycle, and can efficiently realize energy conversion. Due to the advantages of hig...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/04
CPCH01M8/04007H01M8/04029H01M8/04074Y02E60/50Y02P70/50
Inventor 刘赵淼赵福旺董林浩申峰
Owner BEIJING UNIV OF TECH
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