Fuel cell system, fuel cell stack and electric equipment
By setting a conductive port with a built-in conductive component in the fuel cell stack, which can be directly plugged into the current transmission interface of the voltage regulating device, the problem of difficult disassembly and assembly of external wiring harnesses is solved, and the sealing performance and installation convenience are improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WUHAN HAIYI NEW ENERGY TECH CO LTD
- Filing Date
- 2024-11-20
- Publication Date
- 2026-05-05
AI Technical Summary
In existing fuel cell systems, the wire diameter of the external wiring harness is relatively large, making disassembly and assembly difficult.
The conductive ports of the conductive components are located inside the stack body and extend out of the upper end face, directly plugged into the current transmission interface of the voltage regulating equipment, eliminating the need for external wiring harnesses.
This solves the problem of difficult disassembly and assembly of external wiring harnesses, and improves the sealing performance and ease of installation of fuel cell systems.
Smart Images
Figure CN224204116U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of fuel cell technology, specifically to fuel cell systems, fuel cell stacks, and electrical equipment. Background Technology
[0002] A fuel cell system typically includes a fuel cell stack and voltage regulation equipment such as a DC / DC converter. The current generated by the electrochemical reaction in the fuel cell stack needs to be regulated by the voltage regulation equipment before it can be output.
[0003] like Figure 1 The diagram shows a specific result of the current fuel cell system. In this fuel cell system, the voltage regulating device 12 is placed on top of the fuel cell stack 11, and the fuel cell stack 11 is provided with an external through-plate connector 111. The external through-plate connector 111 is connected to the voltage regulating device 12 through an external wiring harness 13, so that the current generated by the fuel cell stack 11 can be input to the voltage regulating device 12 for voltage regulation.
[0004] Since the current generated by the fuel cell stack 11 is often large, the current method of connecting the voltage regulating device 12 through the external through-board connector 111 and the external wiring harness 13 in this fuel cell system usually requires the wire diameter of the external wiring harness 13 to be large, which makes it very difficult to disassemble and assemble the external wiring harness 13. Summary of the Invention
[0005] In view of the deficiencies in the existing technology, the purpose of this utility model is to provide a fuel cell system, a fuel cell stack and electrical equipment, which aims to solve the technical problems in the related technology to a certain extent.
[0006] To achieve the above objectives, the technical solution adopted by this utility model includes:
[0007] This application provides a fuel cell system, including: a voltage regulating device, a stack body, and conductive components, wherein:
[0008] The voltage regulating device is disposed on the upper end face of the fuel cell stack body;
[0009] The conductive component includes a component body and a conductive port connected to the component body;
[0010] The component body of the conductive component is disposed in the inner cavity of the fuel cell body and is connected to the electrodes of the fuel cell body.
[0011] The conductive port of the conductive component extends from the upper end face of the fuel cell stack body and is plugged into the current transmission interface inside the voltage regulating device.
[0012] Preferably, a sealing insulating plate is provided at the interface between the conductive port and the upper end face of the fuel cell stack body.
[0013] Preferably, the inner cavity of the fuel cell stack body is further provided with a support base; and,
[0014] The connection point between the component body and the conductive port is located on the support base.
[0015] Preferably, the support base is disposed in the fuel cell stack body, which is the end plate of the fuel cell stack.
[0016] Preferably, the support base is provided with a groove that matches the component body; and,
[0017] The connection point between the component body and the conductive port is located in a groove in the support base.
[0018] Preferably, the connection point between the component body and the conductive port is fixed to a groove in the support base by bolts.
[0019] Preferably, the conductive component includes a positive conductive component and a negative conductive component, wherein:
[0020] The component body of the positive electrode conductive assembly is connected to the positive electrode of the fuel cell body, and the conductive port of the positive electrode conductive assembly is inserted into the positive current transmission interface inside the voltage regulating device; and,
[0021] The component body of the negative electrode conductive component is connected to the negative electrode of the fuel cell body, and the conductive port of the negative electrode conductive component is inserted into the negative current transmission interface inside the voltage regulating device.
[0022] Preferably, the bottom of the voltage regulating device is provided with elongated holes that match the conductive ports of the positive electrode conductive component and the negative electrode conductive component, respectively.
[0023] This application embodiment also provides a fuel cell stack, including: a stack body and conductive components, wherein:
[0024] The conductive component includes a component body and a conductive port connected to the component body;
[0025] The component body of the conductive component is disposed in the inner cavity of the fuel cell body and is connected to the electrodes of the fuel cell body.
[0026] The conductive port of the conductive component extends out of the upper end face of the fuel cell body to allow insertion into a current transmission interface inside a voltage regulating device disposed on the upper end face.
[0027] This application also provides an electrical device, which includes the fuel cell system provided in this application.
[0028] Based on the above technical solution, the advantages of this utility model compared with the prior art are as follows:
[0029] The fuel cell system provided in this application includes a voltage regulating device, a stack body, and a conductive component. The voltage regulating device is disposed on the upper surface of the stack body. The conductive component includes a component body and a conductive port connected to the component body. The component body is disposed within the inner cavity of the stack body and connected to the electrodes of the stack body. The conductive port extends out of the upper surface of the stack body and is plugged into the current transmission interface inside the voltage regulating device. Therefore, this fuel cell system does not require the external wiring harness method used in the prior art to connect the stack body and the voltage regulating device, thus solving the problems in the prior art. Attached Figure Description
[0030] Figure 1 This is a schematic diagram illustrating the specific results of a fuel cell system based on existing technology.
[0031] Figure 2 This is a schematic diagram illustrating the specific results of a fuel cell stack provided in the embodiments of this application;
[0032] Figure 3 A schematic diagram illustrating the specific result of a fuel cell stack without a sealing cover, provided as an embodiment of this application.
[0033] Figure 4 This is a schematic diagram showing the specific results of conductive components in a fuel cell stack, provided in an embodiment of this application.
[0034] Figure 5 A schematic diagram illustrating the specific results of the fuel cell system provided in the embodiments of this application;
[0035] Figure 6 This is a schematic diagram of the specific result of the support base provided in the embodiments of this application;
[0036] Figure 7 This is a schematic diagram showing the specific result of a support base with a component body provided in an embodiment of this application.
[0037] In the above diagram: 21-voltage regulating device; 22-fuel stack body; 221-sealing insulation plate; 222-support base; 2221-groove; 223-sealing cover; 224-positive electrode; 225-negative electrode; 23-conductive component; 231-component body; 232-conductive port. Detailed Implementation
[0038] The embodiments of this utility model will be further described in detail below with reference to the accompanying drawings.
[0039] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this disclosure. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this disclosure as detailed in the appended claims.
[0040] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium; or a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.
[0041] See Figure 2 The diagram shown is a schematic representation of a fuel cell stack provided in an embodiment of this utility model. The fuel cell stack includes a stack body 22 and conductive components 23. In practical applications, to prevent hydrogen from leaking out of the fuel cell stack, the stack body 22 usually needs to be sealed. For example, in this application, a sealing cover 223 can be provided in the stack body 22 to seal the stack body 22.
[0042] like Figure 3 The image shows the fuel cell stack body 22 without the sealing cover 223, therefore, combined with... Figure 2 and Figure 3As shown, the sealing cover 223 can typically be disposed at the top opening of the fuel cell stack body 22, thereby achieving a sealed enclosure of the fuel cell stack body 22 by encapsulating the top opening of the fuel cell stack body 22. After this sealing enclosure, the sealing cover 223 serves as the upper end face of the fuel cell stack body 22. In practical applications, the sealing cover 223 can typically be made of non-metallic materials or metallic materials such as aluminum alloys. The specific material of the sealing cover 223 is not limited here.
[0043] Further integration Figure 4 The diagram shows a specific result of the conductive component 23. The conductive component 23 may include a component body 231 and a conductive port 232, wherein the conductive port 232 is connected to the component body 231. In practical applications, both the component body 231 and the conductive port 232 can be made of conductive materials such as copper. For example, they can be integrally manufactured using copper busbars, resulting in the conductive component 23 including the component body 231 and the conductive port 232.
[0044] It is important to note that this can be combined with Figures 2 to 4 As shown, in this fuel cell stack, the component body 231 of the conductive component 23 is disposed in the inner cavity of the stack body 22 and is connected to the electrode of the stack body 22; the conductive port 232 of the conductive component 23 extends out of the upper end face of the stack body 22, thereby being used to insert into the current transmission interface inside the voltage regulating device 21 disposed on the upper end face.
[0045] For example, Figure 5 As shown, a voltage regulating device 21 can be provided on the upper surface of the fuel cell stack body 22, so that the conductive port 232 extending from the upper surface of the fuel cell stack body 22 (i.e., the sealing cover 223) can be inserted into the current transmission interface inside the voltage regulating device 21, thereby enabling current input and output through the current transmission interface. In this embodiment of the fuel cell stack, since the conductive port 232 of the conductive component 23 extends from the upper surface of the fuel cell stack body 22, the conductive port 232 can transmit current by inserting into the current transmission interface inside the voltage regulating device 21. Therefore, it is not necessary to use the external wiring harness method of the prior art to connect the fuel cell stack body 22 and the voltage regulating device 21, thus solving the problem of difficulty in assembling and disassembling the external wiring harness due to the large wire diameter in the external wiring harness in the prior art.
[0046] The voltage regulating device 21 can be a DC / DC converter, a DC / AC converter, or other types of voltage regulating devices. The DC / DC converter is used to convert DC power of one voltage to DC power of another voltage, and the DC / AC converter is used to convert DC power of one voltage to AC power of another voltage.
[0047] It should be further explained that, as mentioned above, in order to prevent hydrogen from leaking out of the fuel cell stack, the stack body 22 needs to be sealed and encapsulated. However, in this embodiment, since the conductive port 232 of the conductive component 23 extends beyond the upper surface of the stack body 22, in this case, such as Figure 2 As shown, an insulating plate 221 can be further sealed at the interface between the conductive port 232 and the upper surface of the stack body 22, thereby sealing the interface between the conductive port 232 and the upper surface of the stack body 22 through the sealing insulating plate 221, thus improving the sealing performance of the fuel cell stack.
[0048] Of course, in order to further improve the sealing performance, a sealing adhesive layer can be further provided at the junction of the sealing insulation plate 221 and the conductive port 232, and at the junction of the sealing insulation plate 221 and the stack body 22, so as to seal the tiny gaps at the two junctions through the sealing adhesive layer.
[0049] In practical applications, the conductive component 23 may specifically include a positive conductive component and a negative conductive component, wherein: the component body 231 of the positive conductive component is connected to the positive electrode 224 of the fuel cell stack body 22, and the conductive port 232 of the positive conductive component is inserted into the positive current transmission interface inside the voltage regulating device 21; and the component body 231 of the negative conductive component is connected to the negative electrode 225 of the fuel cell stack body 22, and the conductive port 232 of the negative conductive component is inserted into the negative current transmission interface inside the voltage regulating device 21.
[0050] The specific connection method between the component body 231 of the positive conductive component and the positive electrode 224 is as follows: Figure 3 As shown, for example, the component body 231 can be fixed to the positive electrode 224 by bolts; similarly, the specific connection method between the component body 231 of the negative electrode conductive component and the negative electrode 225 can also be achieved by fixing the component body 231 to the negative electrode 225 by bolts.
[0051] In this way, the current can flow from the positive electrode 224 of the fuel cell body 22 through the positive electrode conductive component, and then into the voltage regulating device 21 through the positive current transmission interface inside the voltage regulating device 21. After being regulated by the voltage regulating device 21, the current flows through the negative current transmission interface inside the voltage regulating device 21 through the negative electrode conductive component, and then into the negative electrode 225 of the fuel cell body 22, thereby forming a current loop.
[0052] It is important to note that, in order to make the conductive component 23 more stable, such as Figure 3 As shown, a support base 222 can also be provided inside the stack body 22, and the connection point between the component body 231 and the conductive port 232 can be located on the support base 222, thereby fixing the component body 231 in the conductive component 23 through the support base 222. Alternatively, the support base 222 can be provided on the end plate of the fuel cell stack within the stack body 22, for example, by bolts or other means, to fix the support base 222 to the end plate of the fuel cell stack. The support base 222 can be made of insulating material.
[0053] In practical applications, the fuel cell stack typically includes multiple battery cells connected in series and / or in parallel. Each battery cell is a device that performs an electrochemical reaction to generate electrical energy. In order to assemble these battery cells, two end plates are usually used to clamp them. In this embodiment, the support base 222 can be fixed to the end plates of the fuel cell stack.
[0054] like Figure 6 The diagram shows a specific result of the support base 222, which has a groove 2221 that matches the component body 231, so that... Figure 7 As shown, the connection point between the component body 231 and the conductive port 232 can be located in the groove 2221 of the support base 222. Of course, for greater stability, the component body 231 can be further fixed to the groove 2221 using bolts. For example, a threaded hole can be provided in the groove 2221, and a through hole can be provided at a corresponding position on the component body 231. Then, a bolt can be inserted through the through hole and into the threaded hole in the groove 2221 for fixation.
[0055] Based on the same inventive concept as the aforementioned fuel cell stack, such as Figure 5The image shows a fuel cell system provided in an embodiment of this application. The fuel cell system includes a fuel cell stack and a voltage regulating device 21 provided in this embodiment. The voltage regulating device 21 is disposed on the upper end face of the stack body 22. Thus, the conductive port 232 of the conductive component 23 extends out of the upper end face of the stack body 22 and is plugged into the current transmission interface inside the voltage regulating device 21. Therefore, this fuel cell system can also solve the problems in the prior art, which will not be described in detail here.
[0056] In order to facilitate the insertion of the conductive port 232 into the voltage regulating device 21 and thus connect to the current transmission interface, the bottom of the voltage regulating device 21 can be provided with an elongated hole that matches the conductive port 232. For example, as mentioned above, the conductive component 23 includes a positive conductive component and a negative conductive component. Therefore, two elongated holes can be provided, corresponding to the conductive port 232 of the positive conductive component and the conductive port 232 of the negative conductive component, respectively. This allows the conductive port 232 of the positive conductive component and the conductive port 232 of the negative conductive component to be inserted into their respective elongated holes, and then connected to the positive current transmission interface and the negative current transmission interface in the elongated holes, respectively.
[0057] Of course, this application embodiment can also provide an electrical device, which includes the fuel cell system provided in this application embodiment, thereby enabling power supply to the electrical device through the fuel cell system. In practical applications, the electrical device may be, for example, a vehicle, various industrial production equipment, etc.
[0058] This utility model is not limited to the above-described embodiments. For those skilled in the art, various improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications are also considered to be within the protection scope of this utility model. Contents not described in detail in this specification are prior art known to those skilled in the art.
Claims
1. A fuel cell system, characterized in that, include: The voltage regulating device (21), the fuel cell stack body (22), and the conductive components (23) include: The voltage regulating device (21) is disposed on the upper end face of the fuel cell stack body (22); The conductive component (23) includes a component body (231) and a conductive port (232) connected to the component body (231). The component body (231) of the conductive component (23) is disposed in the inner cavity of the stack body (22) and is connected to the electrode of the stack body (22); The conductive port (232) of the conductive component (23) extends out of the upper end face of the stack body (22) and is inserted into the current transmission interface inside the voltage regulating device (21).
2. The fuel cell system according to claim 1, characterized in that, A sealing insulating plate (221) is provided at the interface between the conductive port (232) and the upper end face of the stack body (22).
3. The fuel cell system according to claim 1, characterized in that, The inner cavity of the fuel cell stack body (22) is also provided with a support base (222); and, The connection point between the component body (231) and the conductive port (232) is located on the support base (222).
4. The fuel cell system according to claim 3, characterized in that, The support base (222) is disposed in the stack body (22) and is the end plate of the fuel cell stack.
5. The fuel cell system according to claim 3, characterized in that, The support base (222) is provided with a groove that matches the component body (231); and, The connection point between the component body (231) and the conductive port (232) is located in a groove in the support base (222).
6. The fuel cell system according to claim 5, characterized in that, The connection between the component body (231) and the conductive port (232) is fixed to the groove in the support base (222) by bolts.
7. The fuel cell system according to claim 1, characterized in that, The conductive component (23) includes a positive conductive component and a negative conductive component, wherein: The component body (231) of the positive electrode conductive component is connected to the positive electrode of the fuel cell stack body (22), and the conductive port (232) of the positive electrode conductive component is inserted into the positive current transmission interface inside the voltage regulating device (21); and, The component body (231) of the negative electrode conductive component is connected to the negative electrode of the stack body (22), and the conductive port (232) of the negative electrode conductive component is inserted into the negative current transmission interface inside the voltage regulating device (21).
8. The fuel cell system according to claim 7, characterized in that, The bottom of the voltage regulating device (21) is provided with elongated holes that match the conductive ports (232) of the positive electrode conductive component and the conductive ports (232) of the negative electrode conductive component, respectively.
9. A fuel cell stack, characterized in that, include: The fuel cell stack body (22) and the conductive components (23), wherein: The conductive component (23) includes a component body (231) and a conductive port (232) connected to the component body (231). The component body (231) of the conductive component (23) is disposed in the inner cavity of the stack body (22) and is connected to the electrode of the stack body (22); The conductive port (232) of the conductive component (23) extends out of the upper end face of the stack body (22) for insertion into the current transmission interface inside the voltage regulating device (21) disposed on the upper end face.
10. An electrical appliance, characterized in that, The electrical equipment includes the fuel cell system as described in any one of claims 1 to 8.