False cell module, fuel cell and electric equipment

Abstract

The utility model discloses a false battery module, a fuel cell and electric equipment, and relates to the technical field of batteries, the false battery module comprises a first polar plate and a second polar plate, and one side of the first polar plate is provided with a first flow channel; the first polar plate and the second polar plate are stacked in the first direction, the first flow channel and the second polar plate jointly form a first closed cavity, and the first closed cavity is used for allowing first gas to pass through. According to the false battery module provided by the invention, the risk that a worker takes a real membrane electrode as a false membrane electrode to cause a serious assembly accident can be reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of batteries, in particular to a false battery module, a fuel cell and an electric device. BACKGROUND

[0002] In actual use of the fuel cell, in order to improve the problems of water flooding and unstable gas flow in the two-end battery monomer, a plurality of false battery modules are usually arranged at the two ends of the fuel cell, however, the false battery module in the related art includes a false membrane electrode, which leads to the risk that workers easily mix up the false membrane electrode of the false battery module and the true membrane electrode in the core. CONTENT OF THE UTILITY MODEL

[0003] The main purpose of the present application is to provide a false battery module, a fuel cell and an electric device, which can reduce the risk that workers easily mix up the false membrane electrode of the false battery module and the true membrane electrode in the core.

[0004] To achieve the above-mentioned purpose, the false battery module provided by the present application comprises a first polar plate and a second polar plate, one side of the first polar plate is provided with a first flow channel; the first polar plate and the second polar plate are arranged in a stacking manner along a first direction, and the first flow channel and the second polar plate jointly form a first closed cavity, and the first closed cavity is used for passing a first gas.

[0005] In an embodiment, one side of the first polar plate away from the first flow channel is provided with a second flow channel.

[0006] In an embodiment, the first polar plate is provided with at least two, and the second polar plate is arranged between every two adjacent first polar plates, the second polar plate and the second flow channel jointly form a second closed cavity, and the second closed cavity is used for passing a second gas.

[0007] In an embodiment, the surface of one side of the second polar plate facing the first flow channel is a smooth surface.

[0008] In an embodiment, one side of the second polar plate facing the first flow channel is provided with a third flow channel, and the third flow channel is arranged in a mirror image manner with the first flow channel.

[0009] In an embodiment, one side of the second polar plate away from the third flow channel is provided with a fourth flow channel, one side of the first polar plate away from the first flow channel is provided with a second flow channel, and the fourth flow channel is arranged in a mirror image manner with the second flow channel.

[0010] In an embodiment, the first polar plate and / or the second polar plate is provided with a hollow cavity, and the hollow cavity is isolated from the first closed cavity.

[0011] In one embodiment, the dummy battery module further includes a flexible conductive layer sandwiched between adjacent first and second electrode plates.

[0012] This application also proposes a fuel cell, including a core, a current collector, and the aforementioned dummy battery module, wherein the dummy battery module is disposed at the end of the core, and the current collector is disposed on the side of the dummy battery module opposite to the core.

[0013] This application also proposes an electrical device including the aforementioned fuel cell.

[0014] The technical solution of this application stacks the first electrode plate and the second electrode plate along the first direction, and the first flow channel of the first electrode plate and the second electrode plate together form a first sealed cavity for the passage of the first gas. This allows the dummy battery module to only require the cooperation of the first electrode plate and the second electrode plate, without the need to set a traditional dummy membrane electrode between the first electrode plate and the second electrode plate. This simplifies the structure of the dummy battery module, reduces costs and stacking time, and also reduces the risk of serious assembly accidents caused by workers mistaking real membrane electrodes for dummy membrane electrodes. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0016] Figure 1 This is a partial exploded structural diagram of an embodiment of the fuel cell provided in this application;

[0017] Figure 2 This is a partial exploded structural diagram of another embodiment of the fuel cell provided in this application;

[0018] Figure 3 A partial exploded structural diagram of yet another embodiment of the fuel cell provided in this application;

[0019] Figure 4 A partial exploded structural diagram of another embodiment of the fuel cell provided in this application;

[0020] Figure 5 A schematic diagram of one side of the first electrode plate in the dummy battery module provided in this application, where the first flow channel is located;

[0021] Figure 6 A schematic diagram of one side of the first electrode plate in the dummy battery module provided in this application, where the second flow channel is located;

[0022] Figure 7 Fig. 3 is a schematic view of one side of the second polar plate provided with the third flow channel in the dummy battery module according to the present application;

[0023] Figure 8 Fig. 4 is a schematic view of one side of the second polar plate provided with the fourth flow channel in the dummy battery module according to the present application;

[0024] Figure 9 Fig. 5 is a partial exploded structural schematic view of another embodiment of the fuel cell according to the present application.

[0025] BRIEF DESCRIPTION OF THE DRAWINGS

[0026] 100, dummy battery module; 110, first polar plate; 111, first flow channel; 112, first inlet; 113, first outlet; 114, second flow channel; 115, second inlet; 116, second outlet; 117, first cooling water inlet; 118, first cooling water outlet; 120, second polar plate; 121, third flow channel; 122, third inlet; 123, third outlet; 124, fourth flow channel; 125, fourth inlet; 126, fourth outlet; 127, second cooling water inlet; 128, second cooling water outlet; 130, flexible conductive layer;

[0027] 200, core; 210, true membrane electrode;

[0028] 300, current collecting plate.

[0029] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present application will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0031] It should be noted that if the present application involves directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement condition, etc. between components in a certain posture, and if the certain posture changes, the directional indications also change accordingly.

[0032] In addition, if the description of "first", "second" and the like is involved in the embodiments of the present application, the description of "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can be explicitly or implicitly included at least one of the features. In addition, if "and / or" or "and / or" appears throughout the text, it means that the three parallel schemes are included, for example, "A and / or B" includes A scheme, or B scheme, or A and B scheme. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor within the protection scope claimed by the present application.

[0033] In actual use of fuel cell, the fuel cell includes a stack core, the stack core includes a plurality of cell monomers, since the cell monomers at both ends are closest to the external environment, therefore, condensate water is prone to appear in the cell monomers at both ends. In order to improve the problem of water flooding and unstable gas flow in the cell monomers at both ends, usually, a plurality of false cell modules are arranged at both ends of the fuel cell, however, in the related art, the false cell module includes a false membrane electrode, the stack core includes a true membrane electrode, the difference between the true membrane electrode and the false membrane electrode is that the true membrane electrode is provided with a proton membrane and a catalyst, while the false membrane electrode is not provided with the proton membrane and the catalyst, therefore, it is difficult for workers to distinguish the false membrane electrode of the false cell module from the true membrane electrode in the stack core, and further, the risk of disordered assembly of the false membrane electrode and the true membrane electrode appears.

[0034] In order to reduce the risk of disordered assembly of the false membrane electrode and the true membrane electrode, the present application provides a false cell module 100.

[0035] Please refer to Figures 1 to 6 In an embodiment of the present application, the false cell module 100 includes a first polar plate 110 and a second polar plate 120, one side of the first polar plate 110 is provided with a first flow channel 111; the first polar plate 110 and the second polar plate 120 are stacked along a first direction, and the first flow channel 111 and the second polar plate 120 jointly form a first closed cavity, the first closed cavity is used for the first gas to pass through.

[0036] The false battery module 100 is applied to a fuel cell which further comprises a stack core 200, and the false battery module 100 is located at an end of the stack core 200, for example, one end of the stack core 200 is provided with the false battery module 100, or opposite two ends of the stack core 200 are both provided with the false battery module 100. It should be noted that the stack core 200 generally comprises a plurality of battery monomers, and each battery monomer comprises a true membrane electrode 210 and a polar plate arranged on both sides of the true membrane electrode 210, and the true membrane electrode 210 and the polar plates on both sides form two sealed cavities which are not in communication with each other, and the two sealed cavities form gas flow channels for fuel gas and oxidant gas to flow through. A plurality of battery monomers are arranged in a first direction to obtain the structure of the stack core 200. The wire connection direction of the two ends of the stack core 200 is the first direction, that is, the stacking direction of the plurality of battery monomers. When the fuel cell does not have the false battery module 100, the battery monomer at the end is prone to form condensed water, and then the gas flow channel in the battery monomer at the end forms a water flooding phenomenon, thereby seriously hindering the flow of gas and reducing the performance of the battery. However, by arranging the false battery module 100, the water flooding phenomenon occurs in the false battery module 100, thereby avoiding the water flooding phenomenon in the battery monomer.

[0037] The false battery module 100 in the present application comprises the first polar plate 110 and the second polar plate 120, and one of the first polar plate 110 and the second polar plate 120 is close to the core 200 when the first polar plate 110 and the second polar plate 120 are stacked in the first direction. Taking the first polar plate 110 close to the core 200 as an example, the first polar plate 110 is provided with the first flow channel 111 on one side, and the second polar plate 120 and the first flow channel 111 together form the first closed cavity. That is, the first polar plate 110 is provided with the first flow channel 111 on the side away from the core 200. In addition, the first closed cavity formed by the first polar plate 110 and the second polar plate 120 is used for the first gas to pass through, and the gas flowing through the side of the first polar plate 110 facing the second polar plate 120 and the side of the second polar plate 120 facing the first polar plate 110 is the same gas. That is, compared with the traditional false battery module 100, the false membrane electrode between the first polar plate 110 and the second polar plate 120 is no longer needed, so the false battery module 100 in the present application has fewer parts and lower cost. In addition, the structure of the false membrane electrode in the traditional false battery module 100 is very similar to that of the true membrane electrode 210. The false membrane electrode is only not provided with an active area relative to the true membrane electrode 210. Therefore, after the false battery module 100 in the present application cancels the false membrane electrode, the risk of serious assembly accidents caused by workers mistaking the true membrane electrode 210 as the false membrane electrode can be reduced. When the false battery module 100 only comprises the first polar plate 110 and the second polar plate 120, the first polar plate 110 and the second polar plate 120 of the false battery module 100 can be connected together to form the whole module and pre-check the air tightness by bonding, welding or silk printing in the production factory, so that when the whole fuel cell needs to be assembled, only the whole false battery module 100 needs to be installed at the end of the core 200, without the need to stack each plate of the false battery module 100 on site, thereby improving the assembly efficiency and ensuring good sealing effect. In addition, the present application only needs to provide the first polar plate 110 and the second polar plate 120 to form the false battery module 100, without the need to sandwich the false membrane electrode between the two polar plates, so that the cost of the false battery module 100 can be reduced, and the stacking time of each part of the false battery module 100 can be reduced.

[0038] Of course, in other examples, the second polar plate 120 can also be arranged close to the core 200. The first polar plate 110 is provided with the first flow channel 111, and when the first polar plate 110 is stacked with the second polar plate 120, a channel for gas flow can be formed between the first flow channel 111 and the second polar plate 120. By forming the first flow channel 111 and the second polar plate 120 into a first closed cavity together, the first closed cavity can protect the end of the core 200, so that more condensed water can be guided to be present in the first closed cavity, reducing the risk of condensed water blocking the gas flow channel of the battery cell. Specifically, when the second polar plate 120 and the first flow channel 111 form the first closed cavity together, the surface of the second polar plate 120 facing the first flow channel 111 can be a smooth surface, or can be provided with a flow channel that is mirror-symmetrically arranged with the first flow channel 111. The first closed cavity is used to supply a first gas, which can be a fuel gas such as hydrogen; or the first gas can be an oxidant gas such as oxygen or air, etc. It should be noted that the first polar plate 110 is provided with a first inlet 112 and a first outlet 113, which are respectively in communication with the first closed cavity. As shown in Figure 6 the first flow channel 111 can be a smooth surface or can be provided with a second flow channel 114. When the side of the first polar plate 110 away from the first flow channel 111 is also provided with the second flow channel 114, the second flow channel 114 can also be in communication with the first inlet 112 and the first outlet 113, so that the same gas flows through the opposite sides of the first polar plate 110. Or the first polar plate 110 also has a second inlet 115 and a second outlet 116, and the second flow channel 114 can be in communication with the second inlet 115 and the second outlet 116. Among them, one of the first gas and the second gas is a fuel gas, and the other is an oxidant gas.

[0039] The technical scheme of the present application stacks the first polar plate 110 and the second polar plate 120 in the first direction, and the first flow channel 111 of the first polar plate 110 and the second polar plate 120 form a first closed cavity for the first gas to pass through, so that the false battery module 100 only needs the cooperation of the first polar plate 110 and the second polar plate 120, without the need to set a traditional false membrane electrode between the first polar plate 110 and the second polar plate 120, thereby on the one hand, the structure of the false battery module 100 can be simplified, the cost can be reduced, and the stacking time can be reduced; on the other hand, the risk of workers mistaking the true membrane electrode 210 as a false membrane electrode and causing serious assembly accidents can also be reduced.

[0040] As shown in Figure 6 in some embodiments of the present application, the side of the first polar plate 110 away from the first flow channel 111 is provided with a second flow channel 114.

[0041] By providing the second flow channel 114 on the side of the first polar plate 110 away from the first flow channel 111, the first polar plate 110 is a bipolar plate structure, i.e. the first polar plate 110 can simultaneously serve as a part of the pseudo-battery module 100 and can be arranged opposite to the real membrane electrode 210 of the stack core 200, so that a gas flow channel is formed between the real membrane electrode 210 of the stack core 200 and the first polar plate 110, and thus the first polar plate 110 can also simultaneously serve as a part of the real battery.

[0042] Specifically, the gas flow channel formed between the real membrane electrode 210 of the stack core 200 and the second flow channel 114 of the first polar plate 110 can be used for the first gas to flow through, or can be used for other reaction participating gas different from the first gas. For example, when the first gas is hydrogen, the reaction gas between the real membrane electrode 210 of the stack core 200 and the first polar plate 110 can be hydrogen, or the reaction gas between the real membrane electrode 210 of the stack core 200 and the first polar plate 110 can also be a second gas, such as oxygen or air. It can be understood that when the second gas flows in the second flow channel 114, in addition, the first polar plate 110 can also be provided with a second inlet 115 and a second outlet 116, the second flow channel 114 of the first polar plate 110 is in communication with the second inlet 115 and the second outlet 116, and is isolated from the first closed cavity, the first gas inlet and the first gas outlet.

[0043] Please refer to Figure 3 and Figure 4 In some embodiments of the present application, the first polar plate 110 is provided with at least two, and a second polar plate 120 is arranged between each adjacent two first polar plates 110, the second polar plate 120 and the second flow channel 114 together form a second closed cavity, and the second closed cavity is used for the second gas to pass through.

[0044] In this way, a closed cavity is formed between each second polar plate 120 and the adjacent two first polar plates 110, so that more condensed water can be guided into the first closed cavity and the second closed cavity of the pseudo-battery module 100, thereby further reducing the risk of water flooding of the real battery (i.e. the stack core 200).

[0045] In addition, it should be noted that even though the false battery module 100 in the embodiment includes at least two first polar plates 110 and the second polar plate 120 sandwiched between the adjacent two first polar plates 110, the false membrane electrode between the two first polar plates 110 in the prior art is replaced by the second polar plate 120, so that the cost can be reduced, and the first polar plate 110 and the second polar plate 120 can be pre-installed before leaving the factory, and then the whole false battery module 100 is assembled with the core 200, thereby reducing the process of stacking and arranging the false battery module 100 at the assembly site of the fuel cell, thereby saving the stacking time; in addition, the air tightness detection can be completed before the first polar plate 110 and the second polar plate 120 leave the factory, thereby reducing the risk of poor air tightness after the false battery module 100 is installed in the fuel cell. By such arrangement, the false membrane electrode is cancelled, thereby reducing the risk of workers mistaking the true membrane electrode 210 as the false membrane electrode, or mistaking the false membrane electrode as the true membrane electrode 210, which leads to serious assembly accidents.

[0046] For reference Figure 1 and Figure 3 In some embodiments of the present application, the surface of the side of the second polar plate 120 facing the first flow channel 111 is a smooth surface.

[0047] By setting the surface of the side of the second polar plate 120 facing the first flow channel 111 as a smooth surface, the structure of the second polar plate 120 can be simplified, the production efficiency of the second polar plate 120 can be improved, and the production cost of the second polar plate 120 can be reduced.

[0048] For reference Figure 2 , Figure 4 , Figure 5 and Figure 6 In some embodiments of the present application, the side of the second polar plate 120 facing the first flow channel 111 is provided with a third flow channel 121, and the third flow channel 121 is mirror-imaged with the first flow channel 111.

[0049] By providing the side of the second polar plate 120 facing the first flow channel 111 with the third flow channel 121, and mirror-imaging the third flow channel 121 with the first flow channel 111, the space of the first closed cavity formed by the third flow channel 121 on the second polar plate 120 and the first flow channel 111 on the first polar plate 110 is increased, thereby making the first gas flow more smooth, and being beneficial to improving the flow rate of the first gas.

[0050] It can be understood that the second polar plate 120 is provided with a third inlet 122 and a third outlet 123, the third inlet 122 is arranged opposite to and in communication with the first inlet 112, the third outlet 123 is arranged opposite to and in communication with the first outlet 113, and the two ends of the third flow channel 121 are in communication with the third inlet 122 and the third outlet 123 respectively, so that the first gas can enter the first closed cavity formed by the third inlet 122 and the first flow channel 111 together and flow out from the third outlet 123.

[0051] Please refer to 4, Figure 6 and Figure 8 In some embodiments of the present application, the side of the second polar plate 120 away from the third flow channel 121 is provided with a fourth flow channel 124, and the side of the first polar plate 110 away from the first flow channel 111 is provided with a second flow channel 114, and the fourth flow channel 124 is arranged in mirror image with the second flow channel 114.

[0052] It can be understood that the second polar plate 120 is provided with a fourth inlet 125 and a fourth outlet 126, the fourth inlet 125 is arranged opposite to and in communication with the second inlet 115, the fourth outlet 126 is arranged opposite to and in communication with the second outlet 116, and the two ends of the fourth flow channel 124 are in communication with the fourth inlet 125 and the fourth outlet 126 respectively, so that the second gas can enter the second closed cavity formed by the fourth inlet 125 and the second flow channel 114 together and flow out from the fourth outlet 126.

[0053] By arranging the fourth flow channel 124 on the side of the second polar plate 120 away from the third flow channel 121, the second flow channel 114 on the side of the first polar plate 110 away from the first flow channel 111, and the fourth flow channel 124 in mirror image with the second flow channel 114, the first polar plate 110 and the second polar plate 120 can be the smallest stacking unit, can be stacked infinitely in the first direction, and the flow channels on the two surfaces of the first polar plate 110 and the second polar plate 120 arranged face to face can be used for the same kind of gas to flow through, reducing the risk of reaction caused by mixing of the first gas and the second gas. In addition, by such arrangement, only two kinds of polar plates need to be arranged to meet the demand of the large volume of the dummy battery module 100.

[0054] In some embodiments of the present application, the first polar plate 110 and / or the second polar plate 120 is provided with a hollow cavity (not shown), and the hollow cavity is isolated from the first closed cavity.

[0055] By arranging the hollow cavity on the first polar plate 110 and / or the second polar plate 120, the hollow cavity can be used to flow cooling water, and the hollow cavity and the cooling water in the hollow cavity can be used to insulate the core 200, thereby reducing the risk of condensate water at the end of the core 200. In addition, by isolating the hollow cavity from the first closed cavity, the risk of reaction between the cooling liquid in the hollow cavity and the first gas is reduced, and the risk of a large amount of cooling liquid entering the first closed cavity and seriously blocking the channel of the first gas is also reduced.

[0056] Further, in order to facilitate the flow of cooling water, the first polar plate 110 is provided with a first cooling water inlet 117 and a first cooling water outlet 118 which communicate with the hollow cavity on the first polar plate 110; and / or, the second polar plate 120 is provided with a second cooling water inlet 127 and a second cooling water outlet 128 which communicate with the hollow cavity on the second polar plate 120.

[0057] Based on the scheme that the first polar plate 110 is provided with the second flow channel 114, the hollow cavity of the first polar plate 110 is also isolated from the second flow channel 114, thereby reducing the risk of mixing of the cooling water in the hollow cavity with the gas of the second flow channel 114 or blocking the second flow channel 114. Based on the scheme that the second polar plate 120 is provided with the fourth flow channel 124, the hollow cavity of the second polar plate 120 is also isolated from the fourth flow channel 124, thereby reducing the risk of mixing of the cooling water in the hollow cavity with the gas of the fourth flow channel 124 or blocking the fourth flow channel 124.

[0058] As shown in the drawings, Figure 9 In some embodiments of the present application, the dummy battery module 100 further comprises a flexible conductive layer 130, which is arranged between the first polar plate 110 and the second polar plate 120.

[0059] It can be understood that due to manufacturing errors or assembly errors, the fit between the first polar plate 110 and the second polar plate 120 is not always tight, which leads to poor conductivity between the first polar plate 110 and the second polar plate 120, and a large resistance between the first polar plate 110 and the second polar plate 120, thereby leading to poor performance of the fuel cell using the dummy battery module 100. In the present application, the flexible conductive layer 130 is arranged between the first polar plate 110 and the second polar plate 120, which can improve the fit between the first polar plate 110 and the second polar plate 120, thereby reducing the resistance between the first polar plate 110 and the second polar plate 120 and improving the conductivity between them.

[0060] Specifically, the flexible conductive layer 130 can be carbon paper, carbon felt, foamed steel, foamed copper, etc., and of course, the flexible conductive layer 130 in the present application is not limited to the above embodiments, and can also be other materials, as long as it has good flexibility and can conduct electricity. Materials that can conduct electricity belong to the scope protected by the present application.

[0061] The present application also proposes a fuel cell, which will be described in combination with Figures 1 to 4 and Figure 9 The fuel cell includes a stack core 200, a current collecting plate 300, and a dummy cell module 100, the specific structure of which will be described in combination with the above embodiments. Since the present battery device adopts all the technical solutions of the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one. The dummy cell module 100 is arranged at the end of the stack core 200, and the current collecting plate 300 is arranged on the side of the dummy cell module 100 away from the stack core 200.

[0062] The stack core 200 can include a plurality of cell monomers, each of which includes a true membrane electrode 210 and bipolar plates arranged on the opposite sides of the true membrane electrode 210. The true membrane electrode 210 refers to an electrode sheet coated with active substances such as proton membranes and catalysts on the electrode sheet. The true membrane electrode 210 and the bipolar plates on its opposite sides form a reaction cavity, and a plurality of bipolar plates and a plurality of true membrane electrodes 210 are arranged in a stack in a first direction to form the stack core 200.

[0063] Among them, the true membrane electrode 210 in the cell monomer in the stack core 200 close to the dummy cell module 100 is also provided with a bipolar plate between the dummy cell module 100, or when the first polar plate 110 of the dummy cell module 100 is close to the stack core 200, the side of the first polar plate 110 away from the second polar plate 120 is also provided with a second flow channel 114, and the second flow channel 114 and the true membrane electrode 210 together form a reaction cavity, that is, the first polar plate 110 close to the stack core 200 in the dummy cell module 100 can be part of the dummy cell module 100, and also part of the stack core 200. Of course, it can be understood that when the second polar plate 120 of the dummy cell module 100 is close to the stack core 200, the side of the second polar plate 120 away from the first polar plate 110 can form a reaction cavity with the true membrane electrode 210, that is, the second polar plate 120 close to the stack core 200 in the dummy cell module 100 can be part of the dummy cell module 100, and also part of the stack core 200. When the dummy cell module 100 is arranged at the end of the stack core 200, it can be arranged only at one end of the stack core 200 in the first direction, or the dummy cell module 100 can be arranged at both ends of the stack core 200 in the first direction. The dummy cell modules 100 at the opposite ends can be arranged in a stack in a symmetrical manner.

[0064] By arranging the dummy battery module 100 at the end of the core 200, the dummy battery module 100 is closer to the end of the fuel cell, and the condensed water can be introduced to the core 200, thereby protecting the core 200 and reducing the risk of flooding in the core 200. By arranging the current collector plate 300 on the side of the dummy battery module 100 away from the core 200, the current from the core 200 can be conducted to the current collector plate 300 through the dummy battery module 100, and the current can be introduced out through the current collector plate 300.

[0065] Specifically, the size of the current collector plate 300 can be smaller than the size of the first polar plate 110 and the second polar plate 120, and the size of the current collector plate 300 can be equivalent to the size occupied by the first flow channel 111, so that the current collector plate 300 can avoid the gas inlets, gas outlets, cooling water inlets and cooling water outlets on the first polar plate 110 and the second polar plate 120, so that the flow of the first gas, the second gas and the cooling water is more smooth. Of course, in other examples, the size of the current collector plate 300 can be equivalent to the size of the first polar plate 110 and the second polar plate 120, and a plurality of openings are arranged on the current collector plate 300, so that the plurality of openings can be in communication with the gas inlets, gas outlets, cooling water inlets and cooling water outlets, respectively.

[0066] The application also provides a power utilization device, which comprises a fuel cell. The specific structure of the fuel cell is described in the above embodiments. Since the power utilization device adopts all the technical solutions of the above embodiments, it has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here.

[0067] The power utilization device can be a car, an energy storage device, a power supply system, a mobile phone or a tablet computer, etc.

[0068] The above description is only an exemplary embodiment of the application, and does not limit the patent scope of the application. Any equivalent structural transformation based on the technical concept of the application, or direct / indirect application in other related technical fields is included in the patent protection scope of the application.

Claims

1. A dummy battery module characterized by, The first electrode plate is provided with a first flow channel on one side thereof. The second electrode plate is stacked with the first electrode plate in a first direction, and the first flow channel and the second electrode plate jointly form a first closed cavity for the first gas to pass through. The first electrode plate is provided with a second flow channel on the side thereof facing away from the first flow channel. The first electrode plate is provided with at least two, and the second electrode plate is clamped between every two adjacent first electrode plates, and the second electrode plate and the second flow channel jointly form a second closed cavity for the second gas to pass through.

2. The dummy battery module of claim 1, wherein, The surface of the side of the second electrode plate facing the first flow channel is a smooth surface.

3. The dummy battery module of claim 2, wherein, The second electrode plate is provided with a third flow channel on the side thereof facing the first flow channel, and the third flow channel is mirror-imaged with the first flow channel.

4. The dummy battery module according to any one of claims 1 to 3, wherein The second electrode plate is provided with a fourth flow channel on the side thereof facing away from the third flow channel, and the first electrode plate is provided with a second flow channel on the side thereof facing away from the first flow channel, and the fourth flow channel is mirror-imaged with the second flow channel.

5. The dummy battery module according to any one of claims 1 to 3, wherein The first electrode plate and / or the second electrode plate is provided with a hollow cavity, and the hollow cavity is isolated from the first closed cavity.

6. The dummy battery module of claim 5, wherein, The dummy battery module further comprises a flexible conductive layer clamped between the first electrode plate and the second electrode plate arranged adjacently.

7. The dummy battery module according to any one of claims 1 to 3, wherein The fuel cell comprises a stack core, a current collecting plate, and the dummy battery module as claimed in any one of claims 1 to 8, the dummy battery module is arranged at the end of the stack core, and the current collecting plate is arranged on the side of the dummy battery module facing away from the stack core.

8. The dummy battery module according to any one of claims 1 to 3, wherein The fuel cell comprises the fuel cell as claimed in claim 9.

9. A fuel cell characterized by comprising: ​ 10. An electric device, characterized by ​

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