[0034] Contraction below Figure 1-5 Further detailed description of the present application.
[0035] Example embodiments of the present application discloses a method for proton exchange membrane fuel cell bipolar plate metal. Refer figure 1, The metal bipolar plate 1 includes an electrode assembly, the electrode assembly comprises an anode plate welded to the back of a set of plate 11 and the cathode 12, the anode plate 11 and cathode plate 12 showed a rectangular shape, and the anode plate 11 and cathode plate 12 by made of sheet metal. In the side of the anode plate 11 defines a first inlet 111 through the hydrogen gas, a first condensing agent inlet 112 and a first oxygen inlet 113, hydrogen inlet 111 and the first, the first inlet 112 and a condensing agent 113 along the first oxygen inlet an anode plate disposed in the width direction, the cathode plate 12 at a position corresponding to the anode plate 11 defines a second inlet 123 through the hydrogen gas, a second inlet 124 and a condensing agent, a second oxygen inlet 125. On the anode plate 11 and the first hydrogen inlet 111, a first condensing agent inlet 112 and an opposite side of the first oxygen inlet 113 defines a first outlet 114 through the hydrogen gas, a first condensing agent outlet 115 and the first oxygen outlet 116 , the cathode plate 12 and anode plate 11 corresponding to the second position defines a through hydrogen gas outlet 126, outlet 127 and the second condensing agents secondary oxygen outlet 128.
[0036] The anode plate 11 and the cathode back plate 12 interlocking engaged, a first hydrogen inlet 111 and a second hydrogen inlet 123 correspond to each other and communicate with the first inlet 112 and the second condensing agents condensing agent inlet 124 correspond to each other and communicate with, a first oxygen a second oxygen inlet 113 and inlet 125 correspond to each other and communicate with, the first hydrogen outlet 114 and the second hydrogen gas outlet 126 is in communication with each other and, a first outlet 115 and the second condensing agent, condensing agents and the outlet 127 correspond to each communication, the first oxygen a second oxygen outlet 116 and the outlet 128 correspond to each other and communicate.
[0037] Refer figure 2 In the intermediate position the anode plate 11 is provided with a first flow region 2, in the first zone 2 is provided with a hydrogen flow path 21, the hydrogen flow channel 21 along the longitudinal direction of the anode plate 11 has a serpentine shape distribution, and the first hydrogen a first hydrogen inlet 111 and outlet 114 are in communication with the hydrogen gas passage 21, a first flow region 2 is formed by punching and the hydrogen flow channel 21. Hydrogen through the first hydrogen inlet 11 and the channel 21 into the hydrogen diffusion region 2 in the first flow passage 21 along the hydrogen gas, since hydrogen gas is greater than the diffusion rate of oxygen diffusion rate, the hydrogen gas with the serpentine channels 21 extend hydrogen diffusion path, the hydrogen gas can stay longer in the first flow region 2, from the possibility to reduce unreacted hydrogen discharged from the first hydrogen gas outlet 114, so that the reaction of hydrogen and oxygen react with oxygen to more fully, thereby improving the output performance of the fuel cell.
[0038] Refer image 3 , Provided with a second guide region 3, provided with a plurality of parallel oxygen flow channel 31 within the second region 3 in an intermediate position of the cathode plate 12, each of the oxygen gas channel 31 are disposed along the longitudinal direction of the cathode plate 12, wavy and the oxygen passage 31, a second oxygen inlet 125 and a second oxygen outlet 128 are in communication with the oxygen gas passage 31, the second guide region 3 and the oxygen passage 31 formed by stamping. Oxygen through the first oxygen inlet 113 first, and then enters the second guide region 3 from the second oxygen inlet 125 and oxygen diffuses along the channel 31, the passage of oxygen wavy path 31 to extend the diffusion of oxygen, the oxygen in the oxygen increases residence time in the channel 31. Since most of the hydrogen passage 21 in the width direction along the anode plate 12 is provided, the oxygen channel 31 disposed along the length of the cathode plate 11, it is possible to increase the contact area between hydrogen and oxygen, the reaction of hydrogen and oxygen more fully. And the oxygen cathode 12 on the channel plate 31 is relatively short, the rapid discharge of water generated in the oxygen gas passage 31 on the cathode plate 12, to reduce the effect of water on the reaction of hydrogen and oxygen, thereby improving performance of the fuel cell.
[0039] Refer figure 1 and Figure 4 , The electrode assembly 1 is composed of a plurality of proton exchange membrane fuel cell, the anode plate 1 and the electrode assembly 11 and the adjacent cathode plate 12 corresponds, disposed between the adjacent electrode assembly 1 with a proton exchange membrane. Forming an anode plate in the electrode assembly 11 between the plate 124 and the cathode 4 is condensed in the flow field condensing agents condensation field, in the reaction of hydrogen and oxygen generated electron process, it will produce a certain heat of reaction, by providing the field condensing 4 , to facilitate the condensing agent to be heat exchanged with the heat of reaction is taken away, so that the surface temperature of the proton exchange membrane uniform.
[0040] The intermediate anode plate 11 is provided with a back of a first condensation zone 41, 41 is provided in the first condensation zone the condensed first plurality of parallel channels 411, each of the first condensation channel 411 are each provided in the width direction of the anode plate 11, and first condensation zone and the first condensation channel 41 is formed by stamping 411.
[0041] Refer Figure 5 Intermediate position 12 of the back plate 12 a cathode back plate 12 and the cathode structure are identical, the cathode plate 42 to form a second condensation zone, the second condensation zone 42 is provided a plurality bar 12 along the longitudinal direction of the cathode plate 421 disposed two condensation channel , 12 on one side along the longitudinal direction of the anode plate and the cathode plate 11 defines a plurality of third all condensing agents inlet 117 on the anode plate 12 and cathode plate 11 further defines a plurality of third condensing agent outlet 118, a third condensing agents outlet 118 is located opposite the third condensing agent inlet 117 side, and the third inlet 117 and the third condensing agent, condensing agents outlet 118 and the second condensing passage 421 are communicated.
[0042] Refer Figure 4 and Figure 5 The anode plate 11 and cathode plate 12 snap engaged, the first passage 411 and the second condensing condensation channel 421 formed in a staggered grid-like distribution, respectively, into the condensing agent, condensing agents from the first inlet 112 and the third condensing agent inlet 117, can be distributed at various portions of the cathode plate 12 and anode plate 11, it is possible to enhance the condensation effect of condensing agents.
[0043] Refer figure 2 and image 3 , The shape of the first inlet 111 and outlet 114 hydrogen hydrogen are first isosceles trapezoid, a first hydrogen inlet 111 and hydrogen in a first base toward the outlet 114 are provided a first guide region 2, since the lower base a width greater than the bottom, it is possible to reduce the pressure of hydrogen into the first hydrogen inlet 111, thereby slowing the rate of hydrogen into the hydrogen passage 21. Shape of the second oxygen outlet 128 and a second oxygen inlet 125 is also an isosceles trapezoid, the upper base of the second oxygen inlet 125 and a second oxygen outlet 128 are disposed toward the second guide region 3, may increase the oxygen into the first two oxygen inlet 125 of the pressure, increase the rate of oxygen into the oxygen passage 31. First oxygen inlet 113 and first oxygen outlet 116 is larger than the area of the first hydrogen inlet 111 and hydrogen outlet 114 of the first, due to the reaction of hydrogen and oxygen, the oxygen demand is greater than the demand for hydrogen gas, so that it is more oxygen into the oxygen passage 31, sufficient to facilitate the reaction of hydrogen and oxygen.
[0044] Refer image 3 Is located below the second oxygen inlet 12 on the cathode plate 125 is fixedly connected with a plurality of guide bars 121, and close to the second guide 121 of condensing agents inclined inlet 124, since the second oxygen inlet 124 located at the cathode plate 12 side, the ingress of oxygen from the second oxygen inlet 125 passage 31, most of the oxygen in the second oxygen may enter the inlet 125 below the oxygen passage 31, 31 away from the second oxygen inlet oxygen content of the oxygen gas channel 125 than less, resulting in the reaction of hydrogen and oxygen is insufficient, by providing the guide bar 121, so that the diffusion of oxygen along the longitudinal direction of the guide bar 121, to the vicinity of the respective oxygen dispersing oxygen passage 31.
[0045] When the guide bar 121 and is fixedly connected between the oxygen passage 31 with a plurality of posts 122 dispersion, and a width direction of a plurality of discrete posts 122 is provided along the cathode plate 12, from the second oxygen into the oxygen inlet 125, through the first flow bar 121 to the second guide region 3 dispersion, and then dispersed into the oxygen passage from between the 31 columns 122, 122 under the influence of dispersion of the column, the oxygen gas can be uniformly into the oxygen channel 31, so that the reaction of hydrogen and oxygen more full.
[0046] Example embodiments of the present application for a principle embodiment of proton membrane fuel cell bipolar plate is exchanged for a metal:
[0047] Hydrogen from the first hydrogen inlet 111 into the first flow region 2, and 21 in the first diffusion region 2 along the hydrogen flow channel, and finally is discharged in the second hydrogen gas outlet 114. .
[0048] Oxygen through the first oxygen inlet 113 first, and then flow into the second zone 125 from the second oxygen inlet 3, through the guide bar 121 and then expanded to the vicinity of each oxygen channel 31, the effect of dispersing the column 122 under a uniform oxygen hydrogen into the respective channels 21, and finally discharged in the second oxygen outlet 128.
[0049] Hydrogen and oxygen, respectively, in the hydrogen gas passage 21 and an oxygen diffusion channel 31, and the hydrogen and oxygen and the contact should occur.
[0050] Condensing agent respectively, into a first condensation zone 41 and the second condensation zone 42 from the first inlet 112 and the third condensing agent, condensing agent inlet 117, a first condensing agents finally discharged at outlet 115 and the outlet 118 of the third condensing agent, condensing agents in the first condensation channel to take away the hydrogen and oxygen is conveyed condensation channel 421 and second 411 reaction heat generated during the reaction, thereby improving the delivery of fuel cell performance.
[0051] The above is the preferred embodiment of the present application, and it is not limited to the scope of the application, so it should be included in the scope of the present application. Inside.
