Fuel stack with switching function and vehicle

Abstract

The utility model relates to the technical field of fuel cells, and provides a fuel stack with a switching function and a vehicle, and the fuel stack comprises a stack body and a switching mechanism, the electric pile body is provided with a connecting port; the switching mechanism comprises a switching box, a switching copper plate and a connecting wire plugging assembly, the switching box is arranged at the position of the connecting port, the connecting wire plugging assembly penetrates through the switching box, the switching copper plate is located in the switching box, and the switching copper plate is connected to the connecting port and the connecting wire plugging assembly. According to the fuel stack with the switching function provided by the utility model, the switching box is arranged at the connecting port of the stack body, and the connecting line plug-in assembly connected with the connecting port is arranged on the switching box, so that the fuel stack can be connected with a high-voltage line of a converter through the connecting line plug-in assembly; compared with a converter, the switching mechanism has the advantages that the appearance envelope size is effectively reduced, and the switching mechanism can be carried on a vehicle with limited space envelope size.

Description

Technical Field

[0001] The utility model relates to the technical field of fuel cells, and in particular to a fuel cell stack and a vehicle with a switching function. Background Art

[0002] Fuel cell electric vehicles are considered to be one of the important development technology routes for new energy vehicles due to their many advantages, such as long driving range, convenient refueling, and performance similar to traditional vehicles. The fuel cell stack is the place where electrochemical reactions occur and is the core part of the fuel cell power system. It is composed of multiple single cells stacked in series. The bipolar plates and membrane electrodes are alternately stacked, and seals are embedded between each cell. After being compressed by the intake end plate and the blind end plate, they are fastened with a fastening assembly to form a fuel cell stack. The fuel cell stack is equipped with a converter to facilitate the fuel cell stack to be installed in multiple models.

[0003] In the prior art, the converter is directly connected to the battery stack. When the battery stack integrated with the converter is installed in a vehicle with a limited space envelope size, the converter has a large outer envelope size and is too high to be installed. Utility Model Content

[0004] The utility model provides a fuel cell stack and a vehicle with a switching function, which are used to solve the defect that a fuel cell stack with an integrated converter in the prior art is prone to being too high and unable to be carried.

[0005] The utility model provides a fuel cell stack with an adapter function, comprising a fuel cell stack body and an adapter mechanism; the fuel cell stack body has a connection port; the adapter mechanism comprises an adapter box, an adapter and a connecting wire connector assembly, the adapter box is arranged at the connection port position of the fuel cell stack body, the connecting wire connector assembly is passed through the adapter box, the adapter is located in the adapter box, and the adapter is respectively connected to the connection port and the connecting wire connector assembly.

[0006] According to a fuel cell stack with a transfer function provided by the utility model, the transfer box includes a box body and a cover body, the box body is a cylindrical structure with two ends open, the first end of the box body is connected to the fuel cell stack body, and the cover body is connected to the second end of the box body; the connecting wire connector assembly is inserted into one side of the box body.

[0007] According to a fuel cell stack with a switching function provided by the utility model, a seal is provided at least one of between the box body and the cover body, between the box body and the fuel cell stack body, and between the connecting wire connector assembly and the box body.

[0008] According to a fuel cell stack with a switching function provided by the utility model, at least a portion of the outer surface of the switching box is provided with a waterproof and breathable membrane.

[0009] According to a fuel cell stack with a switching function provided by the utility model, the connecting wire connector assembly includes a socket and a wire connector, the socket is passed through the adapter box, the first end of the socket is connected to the adapter, the wire connector is located on one side of the adapter box, and the wire connector is detachably connected to the second end of the socket.

[0010] According to a fuel cell stack with a switching function provided by the utility model, the connecting wire connector assembly also includes a locking component, and the locking component is used to lock or unlock the socket and the wire connector.

[0011] According to a fuel cell stack with a switching function provided by the utility model, the stack body has a plurality of connection ports, the switching mechanism includes a plurality of the switching parts and a plurality of the connecting wire connector assemblies, and the connection ports are connected one-to-one through the switching parts and the connecting wire connector assemblies.

[0012] According to a fuel cell stack with a switching function provided by the utility model, a plurality of connecting wire connector assemblies are arranged side by side on the same side of the switching box.

[0013] According to a fuel cell stack with a switching function provided by the utility model, the switching box is detachably connected to the fuel cell stack body.

[0014] The utility model also provides a vehicle, comprising any one of the above-mentioned fuel cell stacks with switching function.

[0015] The utility model provides a fuel cell stack with a switching function, in which a switching box is arranged at the connection port position of the fuel cell body, and a connecting wire connector assembly connected to the connection port is arranged on the switching box. The high-voltage wire connection with the converter can be achieved through the connecting wire connector assembly. Compared with the converter, the switching mechanism effectively reduces the outer envelope size and can be carried on a vehicle with a limited space envelope size. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 This is one of the structural schematic diagrams of the fuel cell stack with switching function provided by the utility model.

[0018] Figure 2This is the second structural schematic diagram of the fuel cell stack with switching function provided by the utility model.

[0019] Figure 3 This is the third structural schematic diagram of the fuel cell stack with switching function provided by the utility model.

[0020] Figure 4 It is a structural schematic diagram of the battery stack body provided by the utility model.

[0021] Figure 5 This is one of the structural schematic diagrams of the switching mechanism provided by the utility model.

[0022] Figure 6 The utility model is a structural schematic diagram of a connecting line plug-in assembly provided by the utility model.

[0023] Figure 7 It is a structural schematic diagram of a wire connector provided by the utility model.

[0024] Figure 8 The utility model is a schematic diagram of the assembly structure of the plug socket and the adapter box.

[0025] Figure numerals: 1. Battery stack body; 11. Mounting platform; 12. Connection port; 2. Adapter mechanism; 21. Adapter box; 211. Box body; 212. Cover body; 22. Adapter; 23. Connecting wire connector assembly; 231. Socket; 232. Wire connector; 233. Locking part; 2331. Rotating part; 2332. Locking part; 3. Sealing part; 4. Bolt. DETAILED DESCRIPTION

[0026] The following is a further detailed description of the implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0027] In the description of the embodiments of the present utility model, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the embodiments of the present utility model. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0028] In the description of the embodiments of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to specific circumstances.

[0029] In the embodiments of the present invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0030] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model embodiment. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0031] Combine the following Figures 1 - 8 The fuel cell stack with switching function according to an embodiment of the utility model is described.

[0032] The embodiment of the first aspect of the utility model provides a fuel cell stack with a switching function, such as Figures 1 to 4 As shown, the fuel cell stack includes a fuel cell stack body 1 and an adapter mechanism 2, the fuel cell stack body 1 has a connection port 12; the adapter mechanism 2 includes an adapter box 21, an adapter 22 and a connecting wire connector assembly 23, the adapter box 21 is arranged at the connection port 12 position of the fuel cell stack body 1, the connecting wire connector assembly 23 is passed through the adapter box 21, the adapter 22 is located in the adapter box 21, and the adapter 22 is respectively connected to the connection port 12 and the connecting wire connector assembly 23.

[0033] It can be understood that the adapter mechanism 2 is arranged at the connection port 12 of the battery stack body 1, and the adapter mechanism 2 includes an adapter box 21, an adapter 22 and a connecting wire connector assembly 23. The adapter box 21 is arranged at the connection port 12 of the battery stack body 1, and the adapter 22 connected to the connection port 12 is arranged in the adapter box 21, and the connecting wire connector assembly 23 connected to the adapter 22 is arranged on the adapter box 21. The connecting wire connector assembly 23 can be connected to the converter through a high-voltage line.

[0034] It should be noted that the utility model provides an adapter box 21 with an adapter copper plate 22 and a connecting wire connector assembly 23 as the outer envelope size of the adapter mechanism 2, and the outer envelope size of the adapter mechanism 2 is significantly smaller than the outer envelope size of the converter having multiple electrical components; and the connecting wire connector assembly 23 can be used as a connector connected to the high-voltage line of the converter, so as to realize the voltage line connection between the converter and the stack body 1 through the connecting wire connector assembly 23, and then the converter does not need to be integrated on the stack body 1, effectively reducing the overall outer envelope size of the fuel cell stack and avoiding the over-height problem caused by directly connecting the converter to the stack.

[0035] The fuel cell stack with a switching function provided by the utility model is provided with a switching box 21 at the connection port 12 of the fuel cell body 1, and a connecting wire connector assembly 23 connected to the connection port 12 is provided on the switching box 21. The high-voltage wire connection with the converter can be achieved through the connecting wire connector assembly 23. Compared with the converter, the switching mechanism 2 effectively reduces the overall envelope size of the fuel cell stack and can be carried on a vehicle with a limited space envelope size.

[0036] Furthermore, the fuel cell stack with a switching function provided by the utility model realizes the connection and current transmission between the fuel cell stack and the converter through the switching box 21, has the characteristics of simple structure, convenient manufacturing and installation, and saves time and economic costs.

[0037] In one embodiment of the present invention, the adapter box 21 is detachably connected to the fuel cell stack body 1 .

[0038] It can be understood that when the adapter box 21 is connected to the battery stack body 1, the connecting wire connector assembly 23 on the adapter box 21 can be used as a high-voltage wire adapter connector to achieve high-voltage wire connection with the converter; when the adapter box 21 is separated from the battery stack body 1, the connection port 12 on the battery stack body 1 can be used as a direct connection connector with the converter to achieve direct connection of the converter to the battery stack, so that whether the adapter box 21 is installed on the battery stack body 1 can be selected according to the spatial envelope size of the vehicle.

[0039] Specifically, when the spatial envelope size of the vehicle is not limited, the adapter box 21 can be connected to the fuel cell stack body 1 or not, so the converter can be connected to the fuel cell stack body 1 by means of high-voltage lines or by direct connection. When the spatial envelope size of the vehicle is limited, the adapter box 21 is connected to the fuel cell stack body 1, so the converter is connected to the fuel cell stack body 1 by means of high-voltage lines.

[0040] It should be noted that since the converter is directly connected to the fuel cell stack, it has the advantage of low cost. Therefore, the fuel cell stack body 1 is processed with a connection port 12. If the converter and the fuel cell stack body 1 are connected by high-voltage lines, the connection port 12 cannot be matched and connected with the high-voltage line connector. If the structure of the fuel cell stack body 1 is changed on site, it will increase the time and economic costs. The utility model does not need to change the structure of the fuel cell stack body 1. By setting a detachable adapter box 21 on the fuel cell stack body 1, the direct connection and high-voltage line connection between the converter and the fuel cell stack body 1 can be realized, effectively saving time and economic costs.

[0041] It should be noted that if the converter and the fuel cell stack body 1 are in a direct connection mode or a high-voltage line connection mode, it will result in two different structures of the fuel cell stack body 1. For the fuel cell with a transfer function provided by the utility model, the fuel cell stack body 1 adopts the existing fuel cell stack structure processed with a connection port 12. Only through the detachable connection between the adapter box 21 and the fuel cell stack body 1, the flexible placement and transfer of the fuel cell stack body 1 and the converter can be realized, which is beneficial to the flexible installation and application of the hydrogen fuel cell system in more vehicle models and application scenarios.

[0042] In an embodiment of the present utility model, as Figure 1 and Figure 5 shown, the adapter box 21 includes a box body 211 and a cover body 212. The box body 211 is a cylindrical structure with openings at both ends. The first end of the box body 211 is connected to the fuel cell stack body 1, and the cover body 212 is connected to the second end of the box body 211. Preferably, the cover body 212 is detachably connected to the box body 211, which is convenient for removing the cover body 212 to repair the transfer member 22 and the connection positions at both ends of the transfer member 22 in the box body 211.

[0043] Furthermore, the connection line plug-in assembly 23 penetrates through one side of the box body 211, so the connection line plug-in assembly 23 is arranged on the side of the adapter box 21 and adjacent to the outside of the fuel cell stack body 1, so that the connection line plug-in assembly 23 will not increase the overall size of the fuel cell stack.

[0044] For example, when the box body 211 is disposed on the upper plane of the fuel cell stack body 1, and the connection line plugging and unplugging component 23 is disposed on the side surface of the box body 211 and above the fuel cell stack body 1, the connection line plugging and unplugging component 23 disposed on the side surface of the box body 211 will not increase the overall height dimension of the fuel cell stack body 1 and the adapter mechanism 2. The increase in the overall height of the fuel cell stack body 1 and the adapter mechanism 2 relative to the height of a single fuel cell stack body 1 is brought about by the provision of the adapter box 21. If the connection line plugging and unplugging component 23 is disposed on the cover body 212, it will obviously increase the overall height of the fuel cell stack body 1 and the adapter mechanism 2.

[0045] In another example, when the box body 211 is disposed on the side plane of the fuel cell stack body 1, and the connection line plugging and unplugging component 23 is disposed on the side surface of the box body 211 and on one side of the fuel cell stack body 1, the connection line plugging and unplugging component 23 disposed on the side surface of the box body 211 will not increase the overall length dimension of the fuel cell stack body 1 and the adapter mechanism 2. The increase in the overall length of the fuel cell stack body 1 and the adapter mechanism 2 relative to the length of a single fuel cell stack body 1 is brought about by the provision of the adapter box 21. If the connection line plugging and unplugging component 23 is disposed on the cover body 212, it will obviously increase the overall length of the fuel cell stack body 1 and the adapter mechanism 2.

[0046] The fuel cell stack with an adapter function provided by the present utility model can effectively reduce the overall structural dimension of the fuel cell stack by passing the connection line plugging and unplugging component 23 through the box body 211 and being located outside the fuel cell stack body 1.

[0047] In an embodiment of the present utility model, as Figure 8 shown, a seal 3 is provided between the box body 211 and the cover body 212. The seal 3 can be an O-ring. An annular groove is provided at one end of the box body 211 connecting the cover body 212, and an O-ring is provided in the annular groove to improve the sealing performance between the box body 211 and the cover body 212. It should be noted that a seal 3 can also be provided between the box body 211 and the fuel cell stack body 1, or a seal 3 can be provided between the connection line plugging and unplugging component 23 and the box body 211.

[0048] Preferably, seals 3 are provided between the box body 211 and the cover body 212, between the box body 211 and the fuel cell stack body 1, and between the connection line plugging and unplugging component 23 and the box body 211.

[0049] In an embodiment of the present utility model, at least a part of the outer surface of the adapter box 21 is provided with a waterproof and breathable film to prevent rainwater from entering the adapter box 21 and damaging the connection positions of the adapter 22, the connection port 12, and the connection position between the adapter 22 and the connection line plugging and unplugging component 23, so as to improve the use safety.

[0050] Optionally, according to the installation position of the adapter box 21, a waterproof and breathable film can be provided on the upper plane of the adapter box 21. For example, when the box body 211 is installed on the upper plane of the stack body 1, a waterproof and breathable film is provided on the upper plane of the cover body 212.

[0051] In an embodiment of the present utility model, as Figure 6 shown, the connecting wire plug-in component 23 includes a socket 231 and a wire connector 232. The socket 231 passes through the adapter box 21. The first end of the socket 231 is connected to the adapter 22. The wire connector 232 is located on one side of the adapter box 21, and the wire connector 232 is detachably connected to the second end of the socket 231.

[0052] It can be understood that the wire connector 232 is detachably connected to the socket 231, which is convenient for connecting the wire connector 232 to the high-voltage wire.

[0053] Furthermore, as Figure 6 and Figure 7 shown, the connecting wire plug-in component 23 further includes a locking member 233 for locking or unlocking the socket 231 and the wire connector 232.

[0054] It can be understood that the locking member 233 is arranged between the socket 231 and the wire connector 232 and is adapted to switch between a locked state and an unlocked state. In the locked state, the socket 231 locks the wire connector 232 through the locking member 233. In the unlocked state, the locking between the socket 231 and the wire connector 232 is released.

[0055] For example, the locking member 233 includes a rotating member 2331 and a locking member 2332. The rotating member 2331 is rotatably arranged on the wire connector 232. A guiding groove is formed on the rotating member 2331. One end of the guiding groove is far from the rotation center of the rotating member 2331, and the other end of the guiding groove is close to the rotation center of the rotating member 2331. An opening is provided at the end of the guiding groove far from the rotation center. The locking member 2332 is arranged on the socket 231 and is inserted into the guiding groove and slidably engaged with the guiding groove.

[0056] In the locked state, the locking member 2332 is located at the end of the guiding groove close to the rotation center, and the socket 231 locks the wire connector 232 through the locking member 233. In the unlocked state, the locking member 2332 slides out from the end of the guiding groove far from the rotation center, and the rotating member 2331 and the locking member 2332 are separated to release the locking between the socket 231 and the wire connector 232, so that the socket 231 and the wire connector 232 can be separated.

[0057] In one embodiment of the utility model, the battery stack body 1 has a plurality of connection ports 12, the adapter mechanism 2 includes a plurality of adapters 22 and a plurality of connection line connector assemblies 23, and the connection ports 12 are connected one-to-one with the connection line connector assemblies 23 through the adapters 22. Preferably, the plurality of connection line connector assemblies 23 are arranged side by side on the same side of the adapter box 21.

[0058] In a specific embodiment of the utility model, the battery stack body 1 has an upper cover plate, the upper cover plate is provided with a mounting platform 11, the mounting platform 11 is provided with a mounting through hole, an electrical connector is arranged inside the battery stack body 1, the electrical connector has a connection port 12 which is penetrated through the mounting through hole; the box body 211 and the mounting platform 11 are connected by bolts 4, and the box body 211 and the cover body 212 are also connected by bolts 4.

[0059] Optionally, the adapter 22 is a high-voltage adapter arranged in the adapter box 21, the lower part of the adapter 22 is connected to the connection port 12 through the bolt 4, the upper part of the adapter 22 is connected to the connecting wire connector assembly 23 through the bolt 4, the connecting wire connector assembly 23 is connected to the converter through the high-voltage wire, and the battery stack body 1 and the converter are connected through the high-voltage adapter to transmit current.

[0060] Furthermore, the socket 231 of the connecting wire connector assembly 23 is penetrated through the box body 211 , and the socket 231 and the box body 211 are also connected by bolts 4 , and a sealing ring is arranged between the socket 231 and the box body 211 .

[0061] An embodiment of the second aspect of the utility model provides a vehicle, which includes a fuel cell stack with a switching function provided by any of the above embodiments.

[0062] For example, a vehicle includes a fuel cell power system, which includes a fuel cell system, a DC / DC converter, a drive motor and its motor controller, and an on-board energy storage device. The fuel cell system includes a fuel cell module and a fuel cell auxiliary system. The fuel cell system can operate normally under the condition of an external fuel supply source. The fuel cell module includes at least one fuel cell stack with a switching function in any of the above embodiments, that is, the fuel cell stack can be a single stack solution or a multi-stack integrated solution.

[0063] It should be noted that the vehicle may be a hydrogen energy vehicle or a hydrogen energy + charging hybrid electric vehicle, and may be a family car, a bus, a truck, etc. Since the specific structure of the vehicle is not improved in this embodiment, the structure of the vehicle that has not been changed in this embodiment can refer to the prior art, and the specific content will not be described in detail here.

[0064] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A fuel cell stack with a switching function, characterized in that: include: A battery stack body (1), wherein the battery stack body (1) has a connection port (12); The adapter mechanism (2) comprises an adapter box (21), an adapter component (22) and a connecting wire plug assembly (23), wherein the adapter box (21) is arranged at the position of the connecting port (12), the connecting wire plug assembly (23) is passed through the adapter box (21), the adapter component (22) is located in the adapter box (21), and the adapter component (22) is respectively connected to the connecting port (12) and the connecting wire plug assembly (23).

2. The fuel cell stack with switching function according to claim 1, characterized in that: The adapter box (21) comprises a box body (211) and a cover body (212); the box body (211) is a cylindrical structure with two ends open; the first end of the box body (211) is connected to the battery stack body (1); the cover body (212) is connected to the second end of the box body (211); the connecting wire connector assembly (23) is arranged on one side of the box body (211).

3. The fuel cell stack with switching function according to claim 2, characterized in that: A seal (3) is provided at least one of between the box body (211) and the cover body (212), between the box body (211) and the battery stack body (1), and between the connecting wire connector assembly (23) and the box body (211).

4. The fuel cell stack with switching function according to claim 1, characterized in that: At least part of the outer surface of the adapter box (21) is provided with a waterproof and breathable membrane.

5. The fuel cell stack with switching function according to claim 1, characterized in that: The connecting wire plug-in assembly (23) comprises a socket (231) and a wire connector (232); the socket (231) is inserted into the adapter box (21); a first end of the socket (231) is connected to the adapter (22); the wire connector (232) is located on one side of the adapter box (21); and the wire connector (232) is detachably connected to the second end of the socket (231).

6. The fuel cell stack with switching function according to claim 5, characterized in that: The connecting wire plug-in assembly (23) further comprises a locking component (233), and the locking component (233) is used to lock or unlock the plug socket (231) and the wire connector (232).

7. The fuel cell stack with switching function according to any one of claims 1 to 6, characterized in that: The battery stack body (1) has a plurality of connection ports (12), the adapter mechanism (2) comprises a plurality of adapters (22) and a plurality of connection line connector assemblies (23), and the connection ports (12) are connected to the connection line connector assemblies (23) in a one-to-one correspondence via the adapters (22).

8. The fuel cell stack with switching function according to claim 7, characterized in that: A plurality of connection line connector assemblies (23) are arranged side by side on the same side of the adapter box (21).

9. The fuel cell stack with switching function according to any one of claims 1 to 6, characterized in that: The adapter box (21) is detachably connected to the battery stack body (1).

10. A vehicle, characterized in that: A fuel cell stack with a switching function comprising the fuel cell stack as claimed in any one of claims 1 to 9.

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