Monocell, fuel cell, inspection connector of fuel cell, fuel cell system and automobile

Abstract

The invention provides a single cell, a fuel cell, an inspection connector of the fuel cell, a fuel cell system and an automobile, relates to the technical field of cells, and aims to improve the rigidity of an inspection connection male end of the single cell, prevent the inspection connection male end from deforming in production and assembly processes and improve the production efficiency. And the inspection connection male ends of the adjacent single cells in the fuel cell are prevented from being in contact with each other. Each single cell comprises a cathode plate, a membrane electrode and an anode plate which are sequentially stacked; each single cell comprises an inspection connection groove, an opening of the inspection connection groove faces one side face of the single cell, the inspection connection groove penetrates through the single cell in a first direction, and the first direction is the stacking direction of the negative plate, the membrane electrode and the positive plate; an inspection connection male end is arranged in the inspection connection groove, and three side surfaces of the inspection connection male end are respectively connected with three side surfaces of the inspection connection groove.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a single battery, a fuel cell, a fuel cell inspection connector, a fuel cell system, and a vehicle. Background Art

[0002] At present, fuel cells have been widely used in various fields, such as the automotive field. A fuel cell is a device that directly converts the chemical energy of fuel into electrical energy. A fuel cell is composed of several single cells connected in series. The number of single cells can be as many as several hundred. The performance of a single cell directly affects the performance of the fuel cell. A single cell is composed of a cathode plate, a membrane electrode and an anode plate assembled in a stacked manner.

[0003] The voltage of a fuel cell is an important factor affecting the performance of the fuel cell. Therefore, in the process of fuel cell power generation, it is important to detect the voltage of a single cell in the fuel cell in real time. There are a large number of single cells, which are stacked in sequence. In order to improve the utilization rate of raw materials, mass power density, volume power density, etc. of the fuel cell core, the spacing between single cells is getting smaller and smaller. The current distance between single cells is close to 1mm. The plates used in single cells are also getting thinner and thinner, and are currently close to 0.075mm. The small distance between single cells results in a small operating space for the inspection connector. The thinner the plate, the worse the rigidity, which makes the connection between the plate and the inspection connector extremely easy to deform, which makes the connection between the inspection connector and the single cell increasingly difficult. Summary of the invention

[0004] The technical problem solved by some embodiments of the present application is: how to improve the rigidity of the inspection connection male terminal of a single cell in a fuel cell, prevent the inspection connection male terminal from deforming during the production and assembly process, and prevent the inspection connection male terminals of adjacent single cells in the fuel cell from contacting each other.

[0005] On the one hand, the present application provides a single cell, comprising a cathode plate, a membrane electrode and an anode plate stacked in sequence; the single cell comprises an inspection connection groove, the opening of the inspection connection groove faces one side of the single cell, and the inspection connection groove penetrates the single cell in a first direction, and the first direction is the stacking direction of the cathode plate, the membrane electrode and the anode plate; an inspection connection male terminal is arranged in the inspection connection groove, and the three sides of the inspection connection male terminal are respectively connected to the three sides of the inspection connection groove.

[0006] The beneficial effects of some embodiments of the present application are as follows: the single battery has a simple structure, low cost, convenient assembly, high production efficiency, and stable and reliable connection; the three sides of the inspection connection male end in the single battery inspection connection slot are respectively connected to the three sides of the inspection connection slot, so that the inspection connection male end is tightened by the three sides of the inspection connection slot, thereby increasing the rigidity of the inspection connection male end, making it difficult for the inspection connection male end to deform under the tightening action of the three sides of the inspection connection slot, thereby making it difficult for the inspection connector and the single battery to deform during the assembly process; and reducing the possibility of the inspection connection male ends of two adjacent single batteries contacting each other due to deformation, thereby reducing the possibility of the inspection connection male ends of two adjacent single batteries being connected to the same connection terminal in the inspection connector, resulting in short-circuit failure of the single battery.

[0007] In some embodiments, one side of the cathode plate has a first groove, the first groove penetrates the cathode plate in the first direction, the inspection connection male end is arranged in the first groove, and the three sides of the inspection connection male end are respectively connected to the three sides of the first groove; one side of the membrane electrode has a second groove, the second groove penetrates the membrane electrode in the first direction, the second groove and the first groove correspond in position in the first direction, and the inspection connection male end is exposed; one side of the anode plate has a third groove, the third groove penetrates the anode plate in the first direction, the third groove and the first groove correspond in position in the first direction, and the inspection connection male end is exposed; the first groove, the second groove and the third groove are combined as an inspection connection groove.

[0008] According to the above technical means, the three sides of the inspection connection male end in the single cell inspection connection groove are respectively connected to the three sides of the first groove. Since the three sides of the first groove are all located in the core compression area of ​​the single cell, and the core compression area of ​​the single cell has relatively large rigidity and is not easy to deform, the inspection connection male end is tightened by the three sides of the first groove, which increases the rigidity of the inspection connection male end, so that the inspection connection male end is also not easy to deform under the tightening action of the three sides of the first groove, so that the inspection connector and the single cell are not easy to deform during the assembly process; and the possibility of the inspection connection male ends of two adjacent single cells contacting each other due to deformation is reduced, thereby reducing the possibility of the inspection connection male ends of two adjacent single cells being connected to the same connection terminal in the inspection connector, resulting in short circuit failure of the single cell. The three sides of the second groove can be used as limit surfaces, which can be used to limit the inspection connector. The third groove can be used to avoid the inspection connector and provide plug-in space for the inspection connector.

[0009] In some embodiments, the inspection connection male terminal and the cathode plate are an integrated structure.

[0010] According to the above technical means, the manufacturing process can be reduced. When manufacturing the first groove, it is sufficient to retain a part of the first groove as the inspection connection male end.

[0011] In some embodiments, the third groove exposes three sides of the second groove.

[0012] Since the second groove limits the inspection connector, this setting ensures that the third groove will not affect the smooth insertion of the inspection connector and the limitation of the inspection connector by the second groove, providing a larger plugging and unplugging space for the inspection connector.

[0013] In some embodiments, the size of the inspection connection male end in the second direction is smaller than the depth of the first groove in the second direction, and at least one side of the first groove is higher than the part of the inspection connection male end, and is connected to the corner of the side where the first groove of the cathode plate is located, forming a guide boss; a first guide bevel is set at the position of the membrane electrode corresponding to the guide boss, and the first guide bevel exposes the guide boss in the first direction; a second guide bevel is set at the position of the anode plate corresponding to the first guide bevel, and the second guide bevel exposes the guide boss in the first direction, and the extension direction of the first guide bevel is consistent with that of the second guide bevel; the second direction is perpendicular to the side where the first groove is located.

[0014] According to the above technical means, the guide boss of the cathode plate provides a guide for the subsequent inspection connector plugging, so that the inspection connector can slide into the inspection connection groove along the guide boss and connect with the inspection connector male end in the inspection connection groove; the first guide bevel of the membrane electrode and the second guide bevel of the anode plate are used to cooperate with the guide boss of the cathode plate to form a guide for the inspection connector plugging process. This setting makes the assembly of the single cell and the inspection connector more convenient and reduces the possibility of assembly errors.

[0015] In another aspect, the present application provides a fuel cell, comprising at least one single cell as described above arranged in sequence.

[0016] The fuel cell is formed by at least one single cell arranged in sequence. The fuel cell has the same technical effects as the single cell described above, which will not be described in detail here.

[0017] On the other hand, the present application provides an inspection connector for a fuel cell, which is used to connect to the fuel cell described above. The inspection connector for the fuel cell includes a connecting body and at least one connecting terminal. The contact portion of the connecting terminal is arranged inside the connecting body. The connecting body is used to be plugged into the inspection connection slot of at least one single cell in the fuel cell, and the contact portion of the connecting terminal is used to connect to the inspection connection male end in the inspection connection slot.

[0018] According to the above-mentioned technical means, since the inspection connection male end of the single cell mentioned above has greater rigidity and is not easy to deform, the inspection connection male end of the single cell is not easy to deform during the assembly of the inspection connector and the single cell; and the inspection connection male ends of two adjacent single cells in the fuel cell are not easy to contact, which reduces the possibility of the inspection connection male ends of two adjacent single cells being connected to the same connection terminal in the inspection connector, resulting in short circuit failure of the single cell.

[0019] In some embodiments, at least one inspection connection male terminal mounting groove is provided at one end of the connection body for plugging into the inspection connection groove of the single battery; one inspection connection male terminal is inserted into one inspection connection male terminal mounting groove.

[0020] According to the above technical means, the inspection connection male terminal installation groove of the connecting body cooperates with the guide structure of the single cell, which effectively avoids the inspection connection male terminals of two adjacent single cells in the fuel cell being connected to the same connection terminal in the inspection connector, causing the single cell to short-circuit and fail; thereby achieving accurate, fast and reliable connection between the inspection connector and the single cell.

[0021] In some embodiments, a side surface of the membrane electrode has a second groove; one end of the connecting body used to plug into the inspection connection groove of the single cell is divided into multiple limit plates by at least one inspection connection male end mounting groove, and the multiple limit plates are arranged in sequence along the arrangement direction of the multiple single cells. The size of the limit plate matches the size of the second groove of the membrane electrode, and the limit plate can be engaged in the second groove of the membrane electrode.

[0022] According to the above technical means, the limiting plate of the connection body can be used to limit the inspection connector and to isolate adjacent cells in the fuel cell to prevent the conductive parts of adjacent cells from contacting and short-circuiting.

[0023] In some embodiments, the opening of the mounting groove of the inspection connection male end is chamfered.

[0024] According to the above technical means, a guide can be provided for the insertion of the inspection connection male end of the single cell, so that the inspection connection male end of the single cell can be more easily inserted into the inspection connection male end mounting groove of the connection body.

[0025] In some embodiments, the cathode plate includes a guide boss; the connecting body is also provided with at least one visual inspection groove, one visual inspection groove is connected to a patrol connection male end mounting groove, the visual inspection groove is located on the side of the patrol connection male end mounting groove away from the opening of the patrol connection male end mounting groove, and the opening of the visual inspection groove faces the side of the connecting body parallel to the arrangement direction of multiple limit plates; the visual inspection groove is used to insert a portion of the guide boss of the cathode plate.

[0026] According to the above technical means, the sizes of the guide boss of the cathode plate, the first guide bevel of the membrane electrode, and the second guide bevel of the anode plate in the single cell are matched to form a guide structure together. Since a visual inspection groove is connected to a patrol connection male end mounting groove, during the assembly process of the patrol connector and the single cell, a patrol connection male end mounting groove of the connecting body is inserted into the guide structure of a single cell in the fuel cell. The guide structure of the single cell can be observed through the visual inspection groove, realizing the visualization of the assembly process, and effectively preventing the patrol connection male end mounting groove of the connecting body from being inserted into the patrol connection male end of the cathode plates of multiple single cells, causing the single cell to short-circuit; after the patrol connector and the single cell are assembled, a part of the guide boss of the cathode plate is inserted into the visual inspection groove, and the other part of the guide boss of the cathode plate is exposed at the same time, so that visual inspection of whether the assembly is wrong can be realized after the patrol connector and the single cell are assembled, solving the problem that the traditional solution cannot be visually inspected.

[0027] In some embodiments, the inspection connector also includes a tensioning device, which includes a limit pressure plate, the middle part of which is a hollow structure, the limit pressure plate contacts the side of the connection body away from the installation groove of the inspection connection male end, and the part of the connection terminal extending out of the connection body passes through the hollow structure of the limit pressure plate.

[0028] According to the above technical means, the limiting pressure plate of the tensioning device is used to fit with the side of the connecting body in the inspection connector away from the installation groove of the inspection connector male end to prevent the inspection connector from falling off during operation.

[0029] In some embodiments, the tensioning device further includes two end plates, and the two ends of the limiting pressure plate are respectively connected to the two end plates, and the two end plates are configured to be arranged on both sides of at least one single battery along its arrangement direction.

[0030] According to the above technical means, the two end plates of the tensioning device provide a pressing force for the single cells in the fuel cell in the arrangement direction of the single cells.

[0031] On the other hand, the present application provides a fuel cell system, including the fuel cell as described above, and the inspection connector of the fuel cell as described above, the inspection connector of the fuel cell being plugged into the inspection connection slot of at least one single cell in the fuel cell.

[0032] The above-mentioned fuel cell system has the same structure and beneficial technical effects as the single cell, fuel cell, and fuel cell inspection connector provided in some of the above-mentioned embodiments, which will not be repeated here.

[0033] In yet another aspect, the present application provides a vehicle, comprising the fuel cell system as described above.

[0034] The above-mentioned automobile has the same structure and beneficial technical effects as the single battery, fuel cell, and fuel cell inspection connector provided in some of the above-mentioned embodiments, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 A plan view of a single battery provided in an embodiment of the present application;

[0036] Figure 2 A structural diagram of a single battery provided in an embodiment of the present application;

[0037] Figure 3 A structural diagram of another single battery provided in an embodiment of the present application;

[0038] Figure 4 A plan view of a cathode plate in a single cell provided in an embodiment of the present application;

[0039] Figure 5 A plan view of a membrane electrode in a single cell provided in an embodiment of the present application;

[0040] Figure 6 A plan view of an anode plate in a single cell provided in an embodiment of the present application;

[0041] Figure 7 A structural diagram of an inspection connector provided in an embodiment of the present application;

[0042] Figure 8 for Figure 7 Right view of the middle inspection connector;

[0043] Fig. 9 for Figure 7 Front view of the middle inspection connector;

[0044] Fig.10 A structural diagram of another inspection connector provided in an embodiment of the present application;

[0045] Fig.11 for Figure 7 Rear view of the mid-inspection connector;

[0046] Fig.12 for Figure 7 A top view of the central inspection connector;

[0047] Fig.13 A diagram showing the assembly steps of the inspection connector provided in an embodiment of the present application;

[0048] Fig.14 A diagram showing another assembly step of the inspection connector provided in an embodiment of the present application;

[0049] Fig.15 A plan view of a tensioning device provided in an embodiment of the present application;

[0050] Fig.16 A diagram showing another assembly step of the inspection connector provided in an embodiment of the present application;

[0051] Fig.17 A structural diagram of an assembly completion provided in an embodiment of the present application;

[0052] Fig.18 for Fig.17 Enlarged view of the dotted line portion. DETAILED DESCRIPTION

[0053] In order to enable ordinary persons in the art to better understand the technical solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings.

[0054] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present application. On the contrary, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the attached claims.

[0055] At present, a part of material is stamped or welded on the electrode plate of a single cell to serve as a patrol connection male end for connecting with the connection terminal of the patrol connector. The patrol connection male end protrudes out of the compressed part of the cathode plate, membrane electrode and anode electrode of the single cell, and is not supported by the core compression force. With the trend of thinner and thinner electrode plates, the rigidity of the patrol connection male end protruding relative to the compressed part of the cathode plate, membrane electrode and anode electrode is very poor, and it is very easy to deform during the production and assembly process; even the patrol connection male ends of adjacent single cells may contact each other. During the assembly and insertion of the patrol connector, the patrol connection male ends of two adjacent single cells are easily connected to the same connection terminal in the patrol connector, thereby causing the single cell to short-circuit and fail; and, the electrode plate of the single cell is very thin and has low deformation resistance. Even if the patrol connection male ends of two adjacent single cells are inserted into the same groove of the patrol connector and connected to the same connection terminal, it is difficult to judge based on the resistance feedback during insertion. After the patrol connector is assembled in place, it is impossible to judge whether there is an error in the insertion, which leads to extremely low production efficiency.

[0056] In one aspect, the present application provides a single cell 100, such as Figure 1 , Figure 2 , Figure 3As shown, it includes a cathode plate 10, a membrane electrode 20 and an anode plate 30 stacked in sequence; the single cell 100 includes an inspection connection groove 101, the opening of the inspection connection groove 101 faces a side surface 103 of the single cell 100, and the inspection connection groove 101 penetrates the single cell 100 in a first direction X, and the first direction X is the stacking direction of the cathode plate 10, the membrane electrode 20 and the anode plate 30; an inspection connection male terminal 102 is arranged in the inspection connection groove 101, and the three side surfaces of the inspection connection male terminal 102 are respectively connected to the three side surfaces of the inspection connection groove 101.

[0057] It should be noted that the cathode plate 10 , the membrane electrode 20 and the anode plate 30 all have a certain thickness, so the cathode plate 10 , the membrane electrode 20 and the anode plate 30 all have two surfaces arranged opposite to each other and multiple side surfaces, and the two surfaces are arranged opposite to each other in the first direction X.

[0058] In some embodiments, Figure 4 As shown, one side of the cathode plate 10 has a first groove 11, the first groove 11 penetrates the cathode plate 10 in the first direction X, the inspection connection male end 102 is arranged in the first groove 11, and the three sides of the inspection connection male end 102 are respectively connected to the three sides of the first groove 11; Figure 5 As shown, and refer to Figure 1 , Figure 4 , a side surface of the membrane electrode 20 has a second groove 21, the second groove 21 penetrates the membrane electrode 20 in the first direction X, the second groove 21 and the first groove 11 correspond in position in the first direction X, and expose the inspection connection male end 102; Figure 6 As shown, and refer to Figure 1 , Figure 4 , Figure 5 A side surface of the anode plate 30 has a third groove 31, and the third groove 31 penetrates the anode plate 30 in the first direction X. The third groove 31 and the first groove 11 correspond to each other in the first direction X, and expose the inspection connection male end 102; the first groove 11, the second groove 21 and the third groove 31 are combined as the inspection connection groove 101.

[0059] For example, Figure 1 , Figure 2 , Figure 3 As shown, the sizes and shapes of the cathode plate 10, the membrane electrode 20 and the anode plate 30 match each other, and the cathode plate 10, the membrane electrode 20 and the anode plate 30 are stacked and pressed in sequence to form a single cell 100; Figure 1 As shown, the part where the cathode plate 10, the membrane electrode 20 and the anode plate 30 are pressed in sequence is the core pressing area A of the single cell 100. The cathode plate 10, the membrane electrode 20 and the anode plate 30 of the single cell 100 are precisely fitted under the action of the core pressing force, so that the core pressing area A of the single cell 100 is relatively rigid and not easy to deform.

[0060] For example, Figure 1 As shown, the single cell 100 includes two core surfaces 104 opposite to each other in a first direction X and a plurality of side surfaces 103, for example, four side surfaces 103, and an inspection connection groove 101 is provided on one of the side surfaces 103. The inspection connection groove 101 penetrates the single cell 100 in the first direction X. The length d of the inspection connection groove 101 may be, for example, 5mm-15mm, and the height h may be, for example, 5mm-10mm. An inspection connection male terminal 102 is provided in the inspection connection groove 101, and the inspection connection male terminal 102 is used to connect to the inspection connector, so as to detect the single cell voltage of the single cell 100.

[0061] For example, Figure 4 As shown, the cathode plate 10 includes two surfaces 13 opposite to each other in a first direction X and a plurality of side surfaces 12, for example, four side surfaces 12, and a first groove 11 is arranged on one of the side surfaces 12. The first groove 11 penetrates the cathode plate 10 in the first direction X. Therefore, the first groove 11 has three side surfaces 11-1. The inspection connection male terminal 102 is arranged in the first groove 11, and the three side surfaces of the inspection connection male terminal 102 are respectively connected to the three side surfaces 11-1 of the first groove 11.

[0062] For example, Figure 5 As shown, the membrane electrode 20 includes two surfaces 23 opposite to each other in a first direction X and a plurality of side surfaces 22, for example, four side surfaces 22. A second groove 21 is arranged on one of the side surfaces 22. The second groove 21 penetrates the membrane electrode 20 in the first direction X. Therefore, the second groove 21 has three side surfaces 21-1. The three side surfaces 21-1 of the second groove 21 can be used as limiting surfaces to limit the inspection connector.

[0063] For example, Figure 6 As shown, the anode plate 30 includes two surfaces 33 opposite to each other in the first direction X and a plurality of side surfaces 32, for example, four side surfaces 32, and a third groove 31 is provided on one of the side surfaces 32. The third groove 31 penetrates the anode plate 30 in the first direction X. The third groove 31 can be used to avoid the inspection connector and provide a plug-in space for the inspection connector. The first groove 11, the second groove 21 and the third groove 31 cooperate to form the inspection connection groove 101 of the single cell 100.

[0064] For example, Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, a first reinforcing rib structure 3 may be provided at the edge of the cathode plate 10 to improve the rigidity of the cathode plate 10 so that the cathode plate 10 is not easily deformed; Figure 1 , Figure 2 , Figure 3 As shown, a second reinforcing rib structure 4 may be provided at the edge of the membrane electrode 20 to improve the rigidity of the membrane electrode 20 so that the membrane electrode 20 is not easily deformed; Figure 1 , Figure 2 , Figure 3 , Figure 6 As shown, a third reinforcing rib structure 5 may be provided at the edge of the anode plate 30 to improve the rigidity of the anode plate 30 so that the anode plate 30 is not easily deformed.

[0065] The single cell 100 provided by the present application has a simple structure, low cost, convenient assembly, high production efficiency, and stable and reliable connection; the three side surfaces of the inspection connection male end 102 in the inspection connection groove 101 of the single cell 100 are respectively connected to the three side surfaces 11-1 of the first groove 11. Therefore, the inspection connection male end 102 is tightened by the three side surfaces 11-1 of the first groove 11, which increases the rigidity of the inspection connection male end 102, so that the inspection connection male end 102 is not easily deformed under the tightening action of the three side surfaces 11-1 of the first groove 11, thereby making the inspection connector and the single cell 100 not easily deformed during the assembly process; and reduces the possibility of the inspection connection male ends 102 of two adjacent single cells 100 contacting each other due to deformation, thereby reducing the possibility of the inspection connection male ends 102 of two adjacent single cells 100 being connected to the same connection terminal in the inspection connector, resulting in short circuit failure of the single cell 100.

[0066] In some embodiments, the inspection connection male terminal 102 and the cathode plate 10 are an integrated structure, which can reduce the manufacturing process. When manufacturing the first groove 11, the portion of the initial cathode plate used to form the first groove 11 can be retained as a part of the inspection connection male terminal 102.

[0067] In some embodiments, Figure 1 As shown, and refer to Figure 5 , Figure 6 The three side surfaces 31-1 of the third groove 31 respectively expose the three side surfaces 21-1 of the second groove 21, that is, the size of the third groove 31 is larger than that of the second groove 21, and the third groove 31 completely exposes the second groove 21 in the first direction X. Since the second groove 21 limits the inspection connector, this setting ensures that the third groove 31 will not affect the smooth plugging of the inspection connector and the limiting of the inspection connector by the second groove 21, thereby providing a larger plugging and unplugging space for the inspection connector.

[0068] In some embodiments, Figure 4 As shown, and refer to Figure 1 , Figure 2 , Figure 3, the dimension a of the inspection connecting male end 102 in the second direction Y is smaller than the dimension b of the first groove 11 in the second direction Y, at least one side 11-1 of the first groove 11 is higher than the portion of the inspection connecting male end 102, and the corner connected to the side of the first groove 11 of the cathode plate 10 forms a guide boss 14; Figure 5 As shown, and refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 The membrane electrode 20 is provided with a first guiding bevel 24 at a position corresponding to the guiding boss 14, and the first guiding bevel 24 exposes the guiding boss 14 in the first direction X; Figure 6 As shown, and refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 The anode plate 30 is provided with a second guiding bevel 34 at a position corresponding to the first guiding bevel 24, and the second guiding bevel 34 exposes the guiding boss 14 in the first direction X, and the first guiding bevel 24 and the second guiding bevel 34 extend in the same direction; the second direction Y is perpendicular to the side surface 12 where the first groove 11 is located. The sizes of the guiding boss 14 of the cathode plate 10, the first guiding bevel 24 of the membrane electrode 20, and the second guiding bevel 34 of the anode plate 30 match, and together form a guiding structure 105.

[0069] For example, the first guide bevel 24 and the second guide bevel 34 may overlap in the first direction X.

[0070] For example, the guide boss 14 of the cathode plate 10 provides a guide for the subsequent inspection connector plugging, so that the inspection connector can slide into the inspection connection slot 101 along the guide boss 14 and connect with the inspection connection male end 102 in the inspection connection slot 101; the first guide bevel 24 of the membrane electrode 20 and the second guide bevel 34 of the anode plate 30 are used to cooperate with the guide boss 14 of the cathode plate 10 to form a guide for the inspection connector plugging process. This setting makes the assembly of the single cell 100 and the inspection connector more convenient and reduces the possibility of assembly errors.

[0071] In another aspect, the present application provides a fuel cell, comprising at least one single cell 100 as described above arranged in sequence.

[0072] The fuel cell is formed by at least one single cell 100 arranged in sequence. The fuel cell has the same technical effects as the single cell 100 described above, which will not be described in detail here.

[0073] On the other hand, Figure 7 , Figure 8 , Fig.12 As shown, and refer to Fig.13 , Fig.14 The present application provides a fuel cell inspection connector 200 for connecting to the fuel cell described above. The fuel cell inspection connector 200 includes a connecting body 201 and at least one connecting terminal 202. The contact portion 202-1 of the connecting terminal 202 is arranged inside the connecting body 201. The connecting body 201 is used to be plugged into the inspection connection slot 101 of at least one single cell 100 in the fuel cell. The contact portion 202-1 of the connecting terminal 202 is used to connect to the inspection connection male end 102 in the inspection connection slot 101.

[0074] For example, one inspection connector 200 can be connected to multiple cells 100 at the same time, and the contact portion 202 - 1 of one connection terminal 202 in the inspection connector 200 is connected to the inspection male terminal 102 of one cell 100 . The connection terminal 202 is used to transmit the voltage of the cell 100 .

[0075] Since the inspection connection male end 102 of the single cell 100 mentioned above has greater rigidity and is not easily deformed, the inspection connection male end 102 of the single cell 100 is not easily deformed during the assembly of the inspection connector 200 and the single cell 100; and the inspection connection male ends 102 of two adjacent single cells 100 in the fuel cell are not easily contacted, thereby reducing the possibility of the inspection connection male ends 102 of two adjacent single cells 100 being connected to the same connection terminal 202 in the inspection connector 200, resulting in a short circuit failure of the single cell 100.

[0076] In some embodiments, Figure 7 , Fig. 9 As shown, and refer to Fig.13 , Fig.14 At least one inspection male terminal mounting groove 201 - 1 is provided at one end of the connection body 201 for plugging into the inspection connection slot 101 of the single battery 100 ; one inspection male terminal 102 is inserted into one inspection male terminal mounting groove 201 - 1 .

[0077] In some embodiments, Figure 5 As shown, one side 22 of the membrane electrode 20 has a second groove 21; Figure 7 , Fig. 9 As shown, and refer to Fig.13 The connection body 201 is used to plug into one end of the inspection connection groove 101 of the single cell 100, and is divided into multiple limit plates 201-2 by at least one inspection connection male end mounting groove 201-1. The multiple limit plates 201-2 are arranged in sequence along the arrangement direction of the multiple single cells 100. The size of the limit plate 201-2 matches the size of the second groove 21 of the membrane electrode 20, and the limit plate 201-2 can be engaged in the second groove 21 of the membrane electrode 20.

[0078] For example, Figure 7 , Fig. 9 As shown, and refer to Fig.13 , Fig.14 The inspection connection male terminal mounting grooves 201-1 are arranged in sequence, corresponding to the inspection connection male terminals 102 of the single cells 100 arranged in sequence, and the inspection connection male terminal mounting grooves 201-1 of the connection body 201 penetrate the connection body 201 in a direction perpendicular to its arrangement direction and perpendicular to the connection direction of the connection terminal 202, so that the inspection connection male terminal 102 of the single cell 100 can be inserted into the inspection connection male terminal mounting groove 201-1 of the connection body 201, so that the inspection connection male terminal 102 is connected to the connection terminal 202 in the inspection connection male terminal mounting groove 201-1 of the connection body 201.

[0079] It should be noted that the number of connection terminals 202 can be designed according to actual conditions. For example, a connection terminal 202 can be set at a corresponding position of a patrol connection male terminal mounting groove 201-1, and a patrol connection male terminal 102 is inserted into a patrol connection male terminal mounting groove 201-1 and connected to a connection terminal 202; for another example, when it is not necessary to measure the voltage of every single cell in the fuel cell, but only to measure the voltage of some single cells, the connection terminal 202 can be set only at the position corresponding to some patrol connection male terminal mounting grooves 201-1.

[0080] Exemplarily, the guide structure 105 of the single cell 100 provides guidance for the inspection connector 200 when it is plugged in, that is, at least one inspection connection male end mounting groove 201-1 of the connecting body 201 is inserted into the guide structure 105 of at least one single cell 100 in the fuel cell, that is, the guide boss 14 of the cathode plate 10 of the single cell 100, and one inspection connection male end mounting groove 201-1 of the connecting body 201 is inserted into the guide structure 105 of a single cell 100 in the fuel cell; then the inspection connector 200 slides into the inspection connection groove 101 of the single cell 100 along the guide boss 14 of the guide structure 105 in the single cell 100, and is connected to the inspection connection male end 102 in the inspection connection groove 101; until the limiting plate 201-2 of the connecting body 201 is engaged with the second groove 21 of the membrane electrode 20 of the single cell 100, the inspection connector 200 is limited, and then the assembly of the inspection connector 200 and the single cell 100 is completed.

[0081] The inspection connection male terminal mounting groove 201-1 of the connecting body 201 cooperates with the guide structure 105 of the single cell 100, effectively avoiding the short circuit failure of the single cell 100 caused by the inspection connection male terminals 102 of two adjacent single cells 100 in the fuel cell being connected to the same connection terminal 202 in the inspection connector 200; thereby achieving accurate, fast and reliable connection between the inspection connector 200 and the single cell 100.

[0082] The limiting plate 201 - 2 of the connecting body 201 can be used to limit the inspection connector 200 and can also be used to isolate adjacent cells 100 in the fuel cell to prevent the conductive parts of adjacent cells 100 from contacting and short-circuiting.

[0083] In some embodiments, Figure 7 , Fig. 9 As shown, the opening of the inspection connection male terminal mounting groove 201-1 is an arc chamfer 1, which can provide a guide for the insertion of the inspection connection male terminal 102 of the single battery 100, so that the inspection connection male terminal 102 of the single battery 100 can be more easily inserted into the inspection connection male terminal mounting groove 201-1 of the connecting body 201.

[0084] In some embodiments, the cathode plate 10 includes a guide boss 14; Fig.10 , Fig.11 As shown, and refer to Fig.14 The connection body 201 is also provided with at least one visual inspection groove 201-3, and a visual inspection groove 201-3 is connected to a patrol connection male end mounting groove 201-1, and the visual inspection groove 201-3 is located on the side of the patrol connection male end mounting groove 201-1 away from the opening of the patrol connection male end mounting groove 201-1, and the opening of the visual inspection groove 201-3 faces the side of the connection body 201 parallel to the arrangement direction Z of the multiple limit plates 201-2; the visual inspection groove 201-3 is used to insert a part of the guide boss 14 of the cathode plate 10.

[0085] Exemplarily, the visual inspection groove 201 - 3 may or may not pass through the connecting body 201 , and this application does not limit this.

[0086] Exemplarily, the spacing of the visual inspection grooves 201 - 3 is equal to the spacing between the battery cells 100 .

[0087] The guide boss 14 of the cathode plate 10, the first guide bevel 24 of the membrane electrode 20, and the second guide bevel 34 of the anode plate 30 in the single cell 100 match in size, and together form a guide structure 105. Since a visual inspection groove 201-3 is connected to an inspection connection male terminal mounting groove 201-1, during the assembly process of the inspection connector 200 and the single cell 100, an inspection connection male terminal mounting groove 201-1 of the connecting body 201 is inserted into the guide structure 105 of a single cell 100 in the fuel cell. The guide structure 105 of the single cell 100 can be observed through the visual inspection groove 201-3, realizing the visualization of the assembly process and effectively preventing an inspection connection male terminal mounting groove 201-1 of the connecting body 201 from being inserted into the inspection connection male terminals 102 of the cathode plates 10 of multiple single cells 100, thereby causing a short circuit in the single cell 100. After the inspection connector 200 and the single cell 100 are assembled, as shown in FIG. Fig.14 , Fig.17 , Fig.18 As shown, a portion of the guide boss 14 is inserted into the visual inspection groove 201-3, while another portion of the guide boss 14 is exposed, so that after the inspection connector 200 and the single battery 100 are assembled, visual inspection can be performed to see if there is an assembly error, thus solving the problem that the traditional solution cannot be visually inspected.

[0088] In some embodiments, Fig.15 As shown, the inspection connector 200 also includes a tensioning device 203, which includes a limit pressure plate 203-1, the middle part of which is a hollow structure 2, the limit pressure plate 203-1 is in contact with the side of the connection body 201 away from the inspection connection male end mounting groove 201-1, and the connection terminal 202 extends out of the connection body 201 and passes through the hollow structure 2 of the limit pressure plate 203-1.

[0089] In some embodiments, Fig.15 , Fig.16 , Fig.17 As shown, the tensioning device 203 also includes two end plates 203 - 2 , and the two ends of the limiting pressure plate 203 - 1 are respectively connected to the two end plates 203 - 2 , and the two end plates 203 - 2 are configured to be arranged on both sides of at least one single battery 100 along its arrangement direction.

[0090] Illustratively, after the inspection connector 200 is assembled with the single battery 100, the limiting pressure plate 203-1 of the tensioning device 203 is used to fit with the side of the connecting body 201 in the inspection connector 200 away from the inspection connector male end mounting groove 201-1 to prevent the inspection connector 200 from falling off during operation.

[0091] For example, Fig.17As shown, the two end plates 203-2 of the tensioning device 203 can be, for example, a cathode end plate and an anode end plate, the cathode end plate being arranged on the side where the cathode plate 10 of the first cell 100 arranged in sequence in the fuel cell is located, and the anode end plate being arranged on the side where the anode plate 30 of the last cell 100 arranged in sequence in the fuel cell is located; the cathode end plate and the anode end plate of the tensioning device 203 provide a pressing force for the cells 100 in the fuel cell in the arrangement direction of the cells 100. The two ends of the limit pressure plate 203-1 can be connected to the two end plates 203-2 respectively using a standard part 203-3.

[0092] During the entire assembly process of the inspection connector 200 and the single cell 100, the inspection connection male end 102 of the cathode plate 10 of the single cell 100 is not deformed, the assembly process is guided and visualized, and after the assembly is in place, there is a limit pressure plate 203-1 to prevent it from falling off. After the assembly is completed, it can be visually inspected, thereby achieving accurate, fast and reliable connection.

[0093] On the other hand, the present application provides a fuel cell system, including the fuel cell as described above, and the fuel cell inspection connector 200 as described above, the fuel cell inspection connector 200 is plugged into the inspection connection slot 101 of at least one single cell 100 in the fuel cell.

[0094] The above-mentioned fuel cell system has the same structure and beneficial technical effects as the single cell 100, the fuel cell, and the fuel cell inspection connector 200 provided in some of the above-mentioned embodiments, which will not be repeated here.

[0095] In yet another aspect, the present application provides a vehicle, comprising the fuel cell system as described above.

[0096] The above-mentioned automobile has the same structure and beneficial technical effects as the single battery 100, fuel cell, and fuel cell inspection connector 200 provided in some of the above-mentioned embodiments, which will not be repeated here.

[0097] The above are only specific implementation methods of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions within the technical scope disclosed in the present application should be included in the protection scope of the present application.

Claims

1. A single battery, characterized in that: It includes a cathode plate, a membrane electrode and an anode plate which are stacked in sequence; The single cell comprises an inspection connection groove, the opening of the inspection connection groove faces one side of the single cell, and the inspection connection groove penetrates the single cell in a first direction, and the first direction is the stacking direction of the cathode plate, the membrane electrode and the anode plate; A patrol inspection connection male end is arranged in the patrol inspection connection slot, and three side surfaces of the patrol inspection connection male end are respectively connected to three side surfaces of the patrol inspection connection slot.

2. The single cell according to claim 1, characterized in that: A side surface of the cathode plate has a first groove, the first groove penetrates the cathode plate in the first direction, the inspection male end is arranged in the first groove, and three side surfaces of the inspection male end are respectively connected to three side surfaces of the first groove; A side surface of the membrane electrode has a second groove, the second groove penetrates the membrane electrode in the first direction, the second groove and the first groove correspond in position in the first direction, and the inspection connection male end is exposed; A third groove is provided on one side of the anode plate, the third groove penetrates the anode plate in the first direction, the third groove corresponds to the first groove in the first direction, and exposes the inspection connection male end; The first groove, the second groove and the third groove are combined to form the inspection connection groove.

3. The single cell according to claim 2, characterized in that: The inspection connection male end and the cathode plate are an integrated structure.

4. The single cell according to claim 2, characterized in that: The third groove exposes three side surfaces of the second groove.

5. The single cell according to claim 2, characterized in that: The dimension of the inspection male end in the second direction is smaller than the depth of the first groove in the second direction, and at least one side of the first groove is higher than the portion of the inspection male end, and the corner connected to the side of the cathode plate where the first groove is located forms a guide boss; The membrane electrode is provided with a first guiding bevel at a position corresponding to the guiding boss, and the first guiding bevel exposes the guiding boss in the first direction; the anode plate is provided with a second guiding bevel at a position corresponding to the first guiding bevel, and the second guiding bevel exposes the guiding boss in the first direction, and the first guiding bevel and the second guiding bevel extend in the same direction; The second direction is perpendicular to the side surface where the first groove is located.

6. A fuel cell, characterized in that: The invention comprises at least one single battery as claimed in any one of claims 1 to 5 arranged in sequence.

7. A fuel cell inspection connector, used to connect to the fuel cell according to claim 6, characterized in that: It includes a connecting body and at least one connecting terminal, wherein the contact portion of the connecting terminal is arranged inside the connecting body, the connecting body is used to be plugged into the inspection connection slot of at least one single cell in the fuel cell, and the contact portion of the connecting terminal is used to be connected to the inspection connection male end in the inspection connection slot.

8. The fuel cell inspection connector according to claim 7, characterized in that: At least one inspection connection male end mounting groove is provided at one end of the connection body for plugging into the inspection connection groove of the single battery; One of the inspection connection male ends is inserted into one of the inspection connection male end mounting grooves.

9. The fuel cell inspection connector according to claim 8, characterized in that: A side surface of the membrane electrode has a second groove; One end of the connecting body used to plug into the inspection connection groove of the single cell is divided into multiple limit plates by the at least one inspection connection male end mounting groove. The multiple limit plates are arranged in sequence, and the size of the limit plate matches the size of the second groove of the membrane electrode. The limit plate can be engaged with the second groove of the membrane electrode.

10. The fuel cell inspection connector according to claim 8, characterized in that: The opening of the installation groove of the inspection connection male end is chamfered with an arc.

11. The fuel cell inspection connector according to claim 9, characterized in that: The cathode plate includes a guide boss; The connection body is further provided with at least one visual inspection groove, one of the visual inspection grooves is communicated with one of the inspection connection male end mounting grooves, the visual inspection groove is located on a side of the inspection connection male end mounting groove away from an opening of the inspection connection male end mounting groove, and the opening of the visual inspection groove faces a side of the connection body parallel to an arrangement direction of the plurality of limit plates; The visual inspection groove is used to insert a portion of the guide boss of the cathode plate.

12. The fuel cell inspection connector according to any one of claims 8 to 11, characterized in that: The inspection connector also includes a tensioning device, which includes a limit pressure plate, the middle part of which is a hollow structure, and the limit pressure plate is in contact with a side of the connection body away from the inspection connection male end mounting groove, and the part of the connection terminal extending out of the connection body passes through the hollow structure of the limit pressure plate.

13. The fuel cell inspection connector according to claim 12, characterized in that: The tensioning device further includes two end plates, and the two ends of the limit pressure plate are respectively connected to the two end plates, and the two end plates are configured to be arranged on both sides of the at least one single battery along its arrangement direction.

14. A fuel cell system, characterized in that: include The fuel cell according to claim 6, and the inspection connector of the fuel cell according to any one of claims 7 to 13, wherein the inspection connector of the fuel cell is plugged into the inspection connection slot of at least one single cell in the fuel cell.

15. A car, characterized in that: Comprising the fuel cell system as claimed in claim 14.

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