Cooling system with heat transfer enhancement effect and capable of effectively maintaining temperature uniformity of galvanic pile

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

Active Publication Date: 2015-04-22
BEIJING UNIV OF TECH
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  • Abstract
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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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  • Cooling system with heat transfer enhancement effect and capable of effectively maintaining temperature uniformity of galvanic pile
  • Cooling system with heat transfer enhancement effect and capable of effectively maintaining temperature uniformity of galvanic pile
  • Cooling system with heat transfer enhancement effect and capable of effectively maintaining temperature uniformity of galvanic pile

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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

The invention discloses a cooling system with a heat transfer enhancement effect and capable of effectively maintaining the temperature uniformity of a galvanic pile. A seal groove is machined on the surface of a cooling plate, and the seal groove, a rubber sealing ring, and a cover plate of the cooling plate are combined so as to form a sealing structure. Cell units are stacked, one side of each cell unit is connected with an upper fixing structure, the other side of the cell unit is connected with a lower fixing structure, the upper fixing structure and the lower fixing structure are fixedly combined by four pairs of symmetrical bolts and nuts so as to jointly form a fuel cell pile. Liquid inlet channels and liquid outlet channels form a crossed layout structure, the liquid inlet channels and the liquid outlet channels are respectively of a bent continuous structure, and the flow directions of cooling liquid in every adjacent liquid inlet channel and liquid outlet channel are opposite. For preventing the occurrence of a situation that the temperature of the cooling plate at the cooling liquid inlet end is too low and the temperature of the cooling plate at the cooling liquid outlet end is too high, the flow directions of cooling liquid in adjacent cooling channels in the cooling plate are arranged oppositely so as to ensure the temperature uniformity of the inside of 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 Applications(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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