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Current-assisted fuel cell ultra-thin metal bipolar plate pressure welding device and method

A fuel cell and ultra-thin metal technology, applied in resistance welding equipment, metal processing equipment, welding power supply, etc., can solve problems such as complex process, low efficiency, and difficult control of solder coating uniformity, and achieve large radiation energy scattering, Low efficiency, good connection effect

Active Publication Date: 2011-05-11
苏州治臻新能源装备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This invention can ensure that the prepared bipolar plate is not deformed, flat and has good strength, but the process is relatively complicated, the efficiency is low, and it is difficult to control the uniformity of solder coating

Method used

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  • Current-assisted fuel cell ultra-thin metal bipolar plate pressure welding device and method
  • Current-assisted fuel cell ultra-thin metal bipolar plate pressure welding device and method
  • Current-assisted fuel cell ultra-thin metal bipolar plate pressure welding device and method

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Embodiment 1

[0029] Such as figure 1 As shown, this embodiment includes: a power supply 1, a first electrode 2a, a second electrode 2b, an upper welding head 3a, a lower welding head 3b, a bipolar plate 4, a first sensor 5a, a second sensor 5b, and a third sensor 5c , Controller, actuator 7, insulation layer 8 and cooling system 9. In this embodiment, the power source 1 is connected to the first electrode 2a and the second electrode 2b, the first electrode 2a is connected to the upper welding head 3a, and the second electrode 2b is connected to the lower welding head 3b, thereby forming a circuit. The second sensor 5b and the third sensor 5c respectively collect the temperature of the upper and lower surfaces close to the connection area, the first sensor 5a collects the pressure information of the actuator 7, and the first, second and third sensors all transmit data to the controller 6 . The controller 6 generates control signals to control the current of the power supply 1 and the pres...

Embodiment 2

[0041] Such as figure 2 As shown, this embodiment includes: a power supply 1, a first electrode 2a, a second electrode 2b, an upper welding head 3a, a lower welding head 3b, a bipolar plate 4, a first sensor 5a, a second sensor 5b, and a third sensor 5c , controller 6, actuator 7, insulation layer 8 and cooling system 9. In this embodiment, the power supply 1 is connected to the first electrode 2a and the second electrode 2b, the first electrode 2a is connected to one side of the bipolar plate, and the second electrode 2b is connected to the other side of the bipolar plate, so that the entire bipolar plate can pass current. The second sensor 5b and the third sensor 5c respectively collect the temperature near the upper and lower surfaces of the welding area, the first sensor 5a collects the pressure information of the actuator 7, and the first, second and third sensors all transmit data to the controller 6 . The controller 6 generates control signals to control the current...

Embodiment 3

[0053] Such as image 3 As shown, this embodiment includes: a power supply 1, a first electrode 2a, a second electrode 2b, an upper welding head 3a, a lower welding head 3b, a bipolar plate 4, a first sensor 5a, a second sensor 5b, and a third sensor 5c , controller 6, actuator 7, insulation layer 8 and cooling system 9. In this embodiment, the power source 1 is connected to the first electrode 2a and the second electrode 2b, the first electrode 2a is connected to the upper unipolar plate, and the second electrode 2b is connected to the lower welding head to form a circuit. The second sensor 5b and the third sensor 5c respectively collect the temperature near the upper and lower surfaces of the welding area, the first sensor 5a collects the pressure information of the actuator 7, and the first, second and third sensors all transmit data to the controller 6 . The controller 6 generates control signals to control the current of the power supply 1 and the pressure and displacem...

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Abstract

The invention discloses a current-assisted fuel cell ultra-thin metal bipolar plate pressure welding device and a current-assisted fuel cell ultra-thin metal bipolar plate pressure welding method in the technical field of welding. The device comprises a power supply, two electrodes, an actuator, an upper welding head and a lower welding head, wherein the actuator is mechanically connected with the upper and lower welding heads; a bipolar plate to be welded is arranged between the upper and lower welding heads; positive and negative poles of the power supply are connected with the two electrodes respectively; the first electrode is connected with the upper welding head or an upper single polar plate; and the second electrode is connected with the lower welding head or a lower single polar plate. The method comprises the following steps of: generating current by using the power supply, making the current pass through the bipolar plate so as to heat a welding area, and performing pressure welding; and after the pressure welding is finished, cooling to room temperature, and detecting the air tightness of the bipolar plate to meet the requirements of water tightness and airtightness so as to obtain a finished bipolar plate. By directly heating and performing pressure welding through the current, the thermal efficiency is high, the welding process is simple, and the produced bipolar plate has high flatness and stable performance.

Description

technical field [0001] The invention relates to a pressure welding device and a method thereof in the technical field of welding equipment, in particular to a current-assisted fuel cell ultra-thin metal bipolar plate pressure welding device and a method thereof. Background technique [0002] A fuel cell (FC) is a power generation device that uses electrochemical principles to directly convert the chemical energy present in fuel and oxidant into electrical energy. It has the advantages of high energy conversion efficiency, low emission of harmful gas and noise, and high reliability, and is a promising new power generation technology recognized worldwide. In addition to the advantages of general fuel cells, proton exchange membrane fuel cells (PEMFC) also have the advantages of low operating temperature, fast start-up, high specific power, simple structure, convenient operation, and suitable for product miniaturization, etc. focus of attention. [0003] The structure of a pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K11/00B23K11/24B23K11/36
Inventor 来新民徐竹田彭林法林忠钦倪军
Owner 苏州治臻新能源装备有限公司
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