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Cooling system for at least one fuel cell of a fuel cell system and method for cooling at least one fuel cell

A fuel cell unit and a technology for a fuel cell system are applied to a cooling system for at least one fuel cell unit of a fuel cell system and the field of cooling at least one fuel cell unit, which can solve the problem of increasing manufacturing costs, maintenance and warehousing. cost, etc.

Inactive Publication Date: 2017-08-08
BAYERISCHE MOTOREN WERKE AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, relatively expensive special components are used in hitherto known cooling concepts, which significantly increase manufacturing costs as well as maintenance and storage costs

Method used

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  • Cooling system for at least one fuel cell of a fuel cell system and method for cooling at least one fuel cell
  • Cooling system for at least one fuel cell of a fuel cell system and method for cooling at least one fuel cell
  • Cooling system for at least one fuel cell of a fuel cell system and method for cooling at least one fuel cell

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Embodiment Construction

[0026] Figure 1 shows a cooling system as disclosed in DE 11 2006 001 348 B4. The cooling system comprises a cooling circuit 210, 220 with a cooler 300 which may be assisted by a ventilator 310; and the fuel cell units of the fuel cell system combined into a fuel cell stack. In the input line 220, a pump device P is provided between the three-way valve 234 and the fuel cell stack. 1 . Pump unit P 1 It is designed such that sufficient coolant can be supplied not only during the warm-up phase but also during the normal cooling or operating phase. Due to the low operating temperature of the fuel cell unit 100 , a relatively powerful pump device is required which is operated at a voltage higher than the voltage of the vehicle electrical system. During the preheat phase, the three-way valve closes flow path 224 and allows bypass flow via flow paths 212 , 230 , and 222 .

[0027] figure 2 A cooling system according to the technology disclosed here is shown and is here provided ...

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Abstract

The disclosed technology relates to a cooling system for at least one fuel cell (100) of a fuel cell system and to a method for cooling at least one fuel cell. The cooling system comprises at least two pump devices (P1, P2) and a refrigerant circuit (210, 220) having at least one heat exchanger (300) and at least one fuel cell (100). The two pump devices (P1, P2) likewise form part of the refrigerant circuit (210, 220). The pump devices (P1, P2) are designed to at least temporarily convey the refrigerant jointly in the refrigerant circuit (210, 220).

Description

technical field [0001] The technology disclosed here relates to a cooling system for at least one fuel cell unit of a fuel cell system and a method for cooling at least one fuel cell unit. Background technique [0002] Fuel cell systems for mobile applications such as motor vehicles are known from the prior art. In its simplest form, a fuel cell unit is an electrochemical energy converter that converts fuel and oxidant into reaction products with the consequent generation of electricity and heat. In such fuel cells, for example, hydrogen is used as fuel and air or oxygen is used as oxidant. The reaction product of the reaction in the fuel cell unit is, for example, water. In this case, the gas is fed into the corresponding diffusion electrodes, which are separated from each other by a solid or liquid electrolyte. [0003] In the operation of fuel cell units, especially cold starts (startup at ambient temperatures of 0° C. to 25° C.) and frozen starts (startups at ambient ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/04029H01M8/04223H01M8/04746
CPCH01M8/04029H01M8/04268H01M8/04768H01M8/0432Y02E60/50
Inventor V·福曼斯基G·里措帕特隆
Owner BAYERISCHE MOTOREN WERKE AG
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