Electrochemical cell device and vehicle drive system

Abstract

The application provides an electrochemical cell device, which comprises a housing having a mounting hole with a mounting hole threaded section, an electric stack accommodated in the housing, a compression member adapted to be mounted in the mounting hole, the compression member having a compression member threaded section adapted to cooperate with the mounting hole threaded section, and an elastic sealing member adapted to seal the compression member relative to the mounting hole, wherein in an assembled state, the compression member extends into the housing through the mounting hole to compress the electric stack. The application also relates to a corresponding vehicle drive system. The application has the advantages that the compression member for the electric stack is simple in structure, reusable and does not affect the cleanliness of the electric stack, and good sealing effect can be achieved through shaft diameter bidirectional sealing.

Description

Technical Field

[0001] This application relates to an electrochemical battery device and a vehicle drive system. Background Technology

[0002] Electrochemical cell stacks are typically housed within a casing. To secure the stack, ordinary bolts are used with thread sealant in the mounting holes of the casing for tightening and sealing. This method results in poor sealing, makes disassembly and repair difficult, and easily generates debris, affecting the cleanliness of the stack. Utility Model Content

[0003] The purpose of this application is to provide an electrochemical battery device that makes the clamping device for the battery stack simple in structure, reusable, and ensures the cleanliness of the battery stack.

[0004] According to a first aspect of this application, an electrochemical battery device is provided, characterized in that the electrochemical battery device comprises:

[0005] A housing having a mounting hole having a threaded section;

[0006] The fuel cell stack housed within the casing;

[0007] A clamping member suitable for installation in the mounting hole, the clamping member having a clamping member threaded section adapted to mate with a threaded section of the mounting hole; and

[0008] An elastic seal suitable for sealing the clamping member relative to the mounting hole;

[0009] In the assembled state, the clamping member extends through the mounting hole into the housing to clamp the fuel cell stack. The clamping member and the resilient seal together can be referred to as a clamping device.

[0010] According to an optional embodiment of this application, the resilient seal includes a radial sealing ring; and / or, the resilient seal includes an axial sealing ring; and / or, the resilient seal includes an integrated sealing ring comprising a radial sealing portion and an axial sealing portion integrally formed with each other; and / or, the clamping member has a clamping head, and the mounting hole has an inlet section for receiving the clamping head.

[0011] Clamping components, especially when combined with radial and axial seals, are called clamps.

[0012] According to an optional embodiment of this application, the mounting hole has a smooth section, the clamping member has a non-threaded sealing section, and in the assembled state, the radial sealing ring is located between the smooth section of the mounting hole and the sealing section of the clamping member to achieve radial sealing; and / or, the clamping member or the mounting hole is provided with a mounting groove for mounting the radial sealing ring; and / or, the radial sealing ring has a circular cross-section.

[0013] According to an optional embodiment of this application, along the insertion direction of the clamping member, the sealing section of the clamping member is located downstream of the threaded section of the clamping member, and the unobstructed section of the mounting hole is located downstream of the threaded section of the mounting hole; the diameter of the sealing section of the clamping member is smaller than the diameter of the threaded section of the clamping member; the diameter of the unobstructed section of the mounting hole is smaller than the diameter of the threaded section of the mounting hole; the sealing section of the clamping member is longer than the unobstructed section of the mounting hole, and the sealing end face of the sealing section is adapted to press against the fuel cell stack.

[0014] According to an optional embodiment of this application, along the insertion direction of the clamping member, the sealing section of the clamping member is located upstream of the threaded section of the clamping member and the clear section of the mounting hole is located upstream of the threaded section of the mounting hole, the diameter of the clear section of the mounting hole is larger than the diameter of the threaded section of the mounting hole; the diameter of the sealing section of the clamping member is larger than the diameter of the threaded section of the clamping member; the threaded section of the clamping member is longer than the threaded section of the mounting hole, and the end face of the threaded section of the clamping member is adapted to clamp the fuel cell stack; along the insertion direction of the clamping member, the sealing section of the clamping member is downstream of the clamping member head and the clear section of the mounting hole is downstream of the inlet hole section, or, the clamping member head of the clamping member forms the sealing section and the inlet hole section of the mounting hole forms the clear section.

[0015] According to an alternative embodiment of this application, the sealing section is cylindrical.

[0016] According to an optional embodiment of this application, with the central axis of the clamping member and the mounting hole as the axial direction, the clamping member has a radially extending clamping surface and the mounting hole has a radially extending support surface that mates with the clamping surface. In the assembled state, the axial sealing ring is axially positioned between the clamping surface of the clamping member and the support surface of the mounting hole; the clamping head end face of the clamping member facing the mounting hole forms the clamping surface, and the bottom surface of the inlet hole section of the mounting hole forms the support surface; or, along the insertion direction of the clamping member, the clamping surface is downstream of the clamping head of the clamping member and the support surface is downstream of the inlet hole section; the cross-section of the axial sealing ring is square.

[0017] According to an optional embodiment of this application, the clamping member has a turning region, and the mounting hole has a corresponding turning region that mates with the turning region of the clamping member. In the assembled state, the integrated sealing ring is located between the turning region of the clamping member and the corresponding turning region of the mounting hole.

[0018] According to an optional embodiment of this application, the electrochemical battery device is a fuel cell or an electrolyzer.

[0019] According to a second aspect of this application, a vehicle drive system is provided, characterized in that the vehicle drive system includes the aforementioned electrochemical battery device. The vehicle drive system may further include, in particular, a drive motor.

[0020] At least in some embodiments, the positive effects of this application are: the clamping device for the fuel cell stack has a simple structure and can be reused; the bidirectional sealing of the shaft diameter enables a good clamping and sealing effect; and the cleanliness of the fuel cell stack is ensured. Attached Figure Description

[0021] The principles, features, and advantages of this application will be better understood below with reference to the accompanying drawings. The drawings include:

[0022] Figure 1 An example of the electrochemical battery device of this application is shown schematically in partial cross-sectional view.

[0023] Figure 2 A three-dimensional diagram is shown schematically. Figure 1 An example of a clamping component.

[0024] Figure 3 A second example of the mounting holes for the clamping element and the housing is shown schematically.

[0025] Figure 4 A third example of the mounting holes for the clamping element and the housing is shown schematically.

[0026] Figure 5 The fourth example of the mounting holes for the clamping element and the housing is schematically shown.

[0027] Figure 6 The fifth example of the mounting holes for the clamping element and the housing is shown schematically.

[0028] Figure 7 The sixth example of the mounting holes for the clamping element and the housing is shown schematically. Detailed Implementation

[0029] To make the technical problems to be solved, the technical solutions, and the beneficial technical effects of this application clearer, the application will be further described in detail below with reference to the accompanying drawings and several exemplary embodiments. It should be understood that the specific embodiments described herein are only for explaining this application and are not intended to limit the scope of protection of this application.

[0030] Figure 1 An example of the electrochemical battery device of this application is schematically shown in a partial cross-sectional view. The electrochemical battery device is a fuel cell or an electrolyzer. In particular, when the electrochemical battery device is a fuel cell, such as a fuel cell in a vehicle drive system, the fuel cell is...

[0031] like Figure 1 As shown, the electrochemical battery device includes:

[0032] The housing 1 has a mounting hole 10, and the mounting hole 10 has a mounting hole thread section 11;

[0033] The fuel cell stack 2 is housed within the casing 1;

[0034] A clamping member 3 adapted for installation in the mounting hole 10, the clamping member 3 having a clamping member threaded section 30 adapted to mate with the threaded section 11 of the mounting hole; and

[0035] An elastic seal 4 adapted to seal the clamping member 3 relative to the mounting hole 10;

[0036] In the assembled state, the clamping member 3 extends through the mounting hole 10 into the housing 1 to clamp the fuel cell stack 2.

[0037] The clamping element 3 and the elastic sealing element 4 together can be called a clamping device. Through the above construction method, the clamping device of the fuel cell stack 2 is simple in structure, can be disassembled without damage and reused, and ensures the cleanliness of the fuel cell stack 2.

[0038] Figure 2 A three-dimensional diagram is shown schematically. Figure 1 An example of clamping element 3.

[0039] According to an exemplary embodiment of this application, such as Figure 1 and Figure 2 As shown, the clamping member 3 has a clamping head 31, and the mounting hole 10 has an inlet section 12 for receiving the clamping head 31. The outer end face 36 of the clamping head 31 may be provided with a slot 35 for screwing the clamping member 3. The slot 35 is, for example, hexagonal in shape.

[0040] According to an exemplary embodiment of this application, such as Figure 1As shown, the resilient seal 4 includes a radial sealing ring 41. The radial sealing ring 41 is understood in particular as a sealing ring located radially between two components to be sealed and is especially used to impede the axial flow of fluid. The radial sealing ring 41 is used specifically for radial sealing and not for axial sealing.

[0041] According to an exemplary embodiment of this application, such as Figure 1 and Figure 2 As shown, the mounting hole 10 has a smooth section 13, and the clamping member 3 has a non-threaded sealing section 32. In the assembled state, the radial sealing ring 41 is positioned between the smooth section 13 of the mounting hole 10 and the sealing section 32 of the clamping member 3 to achieve radial sealing. The smooth section 13 is specifically understood as a non-threaded section.

[0042] According to an exemplary embodiment of this application, such as Figure 1 and Figure 2 As shown, the sealing section 32 is cylindrical. This is specifically understood to mean that the sealing section 32 is at least substantially cylindrical. This is advantageous for manufacturing and sealing. However, it is theoretically possible for the sealing section 32 to have other shapes.

[0043] According to an exemplary embodiment of this application, such as Figure 1 As shown, the radial sealing ring 41 has a circular cross-section. This is specifically understood as the radial sealing ring 41 being formed by rotating a circle 360 ​​degrees around the central axis 6. The circular shape reduces resistance during the insertion or removal of the clamping member 3.

[0044] According to an exemplary embodiment of this application, such as Figure 1 As shown, the resilient seal 4 includes an axial sealing ring 42. The axial sealing ring 42 is understood in particular as a sealing ring positioned axially between two components to be sealed and is especially used to impede radial flow of fluid. The axial sealing ring 42 is used primarily for axial sealing and not for radial sealing.

[0045] For example, such as Figure 1 As shown, with the central axis 6 of the clamping member 3 and the mounting hole 10 as the axial direction, the clamping member 3 has a radially extending clamping surface 33 and the mounting hole 10 has a radially extending support surface 14 that mates with the clamping surface 33. In the assembled state, the axial sealing ring 42 is located axially between the clamping surface 33 of the clamping member 3 and the support surface 14 of the mounting hole 10.

[0046] According to an exemplary embodiment of this application, such as Figure 1As shown, the clamping head 31 of the clamping member 3, the clamping head end face 310 facing the mounting hole 10 forms the clamping surface 33, and the bottom surface 120 of the inlet hole section 12 of the mounting hole 10 forms the support surface 14.

[0047] According to an exemplary embodiment of this application, such as Figure 1 As shown, the axial sealing ring 42 has a square cross-section. This is beneficial for sealing. Theoretically, a cross-sectional shape different from a square is also feasible.

[0048] According to an exemplary embodiment of this application, such as Figure 2 As shown, the clamping member 3 is provided with a mounting groove 37 for mounting the radial sealing ring 41. Alternatively, it is conceivable that the mounting hole 10 is provided with a mounting groove 37 for mounting the radial sealing ring 41.

[0049] Here, the clamping element 3, together with the radial sealing ring 41 and the axial sealing ring 42, is referred to as the clamping device.

[0050] According to an exemplary embodiment of this application, such as Figure 1 As shown, along the insertion direction 5 of the clamping member 3, the sealing section 32 of the clamping member 3 is located downstream of the threaded section 30 of the clamping member, and the smooth section 13 of the mounting hole 10 is located downstream of the threaded section 11 of the mounting hole. The diameter of the sealing section 32 of the clamping member 3 is smaller than the diameter of the threaded section 30 of the clamping member.

[0051] For example, such as Figure 1 As shown, the sealing section 32 of the clamping member 3 may be longer than the aperture section 13 of the mounting hole 10, and the sealing section end face 320 of the sealing section 32 is adapted to clamp the fuel cell stack 2.

[0052] Here, the diameter of the smooth section 13 of the mounting hole 10 can be smaller than the diameter of the threaded section 11 of the mounting hole. However, it is theoretically also possible for the diameter of the smooth section 13 to be larger than the diameter of the threaded section 11 of the mounting hole, in which case the radial sealing ring 41 is larger and thicker.

[0053] Figure 3 A second example of the clamping member 3 and the mounting hole 10 of the housing 1 is schematically shown. Only the upper half above the central axis 6 is shown here. The lower half below the central axis 6 is particularly mirror-symmetrical to the upper half about the central axis 6. Here, the threaded area is indicated by dashed lines.

[0054] and Figure 3 Similarly, Figure 4 A third example of the clamping member 3 and the mounting hole 10 of the housing 1 is schematically shown.

[0055] According to an exemplary embodiment of this application, such as Figure 3 and Figure 4 As shown, along the insertion direction 5 of the clamping member 3, the sealing section 32 of the clamping member 3 is located upstream of the threaded section 30 of the clamping member, and the smooth hole section 13 of the mounting hole 10 is located upstream of the threaded section 11 of the mounting hole. The diameter of the smooth hole section 13 of the mounting hole 10 is larger than the diameter of the threaded section 11 of the mounting hole.

[0056] Here, as Figure 3 and Figure 4 As shown, the diameter of the sealing section 32 of the clamping member 3 can be larger than the diameter of the threaded section 30 of the clamping member. Theoretically, it is also possible that the diameter of the sealing section 32 of the clamping member 3 is smaller than the diameter of the threaded section 30 of the clamping member.

[0057] For example, such as Figure 3 and Figure 4 As shown, the threaded section 30 of the clamping member 3 may be longer than the threaded section 11 of the mounting hole 10, and the end face 300 of the threaded section 30 of the clamping member 3 is adapted to clamp the fuel cell stack 2.

[0058] According to an exemplary embodiment of this application, such as Figure 3 and Figure 4 As shown, along the insertion direction 5 of the clamping member 3, the sealing section 32 of the clamping member 3 is downstream of the clamping member head 31 and the light hole section 13 of the mounting hole 10 is downstream of the inlet hole section 12.

[0059] exist Figure 3 In, with Figure 1 Similarly, the clamping head 31 of the clamping member 3, facing the mounting hole 10, forms a clamping surface 33 for clamping the axial sealing ring 42, and the bottom surface 120 of the inlet hole section 12 of the mounting hole 10 forms a supporting surface 14 for supporting the axial sealing ring 42. Figure 3 The difference lies in Figure 4 In the middle, along the insertion direction 5 of the clamping member 3, the clamping surface 33 is downstream of the clamping head 31 of the clamping member 3 and the supporting surface 14 is downstream of the inlet hole section 12.

[0060] Figure 5 A fourth example of the clamping member 3 and the mounting hole 10 of the housing 1 is schematically shown.

[0061] According to an exemplary embodiment of this application, such as Figure 5As shown, the clamping head 31 of the clamping member 3 forms the sealing section 32 and the inlet hole section 12 of the mounting hole 10 forms the light hole section 13.

[0062] Figure 6 The fifth example of the clamping member 3 and the mounting hole 10 of the housing 1 is schematically shown.

[0063] Figure 7 A sixth example of the clamping member 3 and the mounting hole 10 of the housing 1 is schematically shown.

[0064] According to an exemplary embodiment of this application, such as Figure 6 and Figure 7 As shown, the elastic seal 4 includes an integrated sealing ring 43, which includes a radial sealing portion 431 and an axial sealing portion 432 integrally formed with each other.

[0065] Here, by way of example, the clamping member 3 has a turning region 34, and the mounting hole 10 has a corresponding turning region 15 that mates with the turning region 34 of the clamping member 3. In the assembled state, the integrated sealing ring 43 is located between the turning region 34 of the clamping member 3 and the corresponding turning region 15 of the mounting hole 10.

[0066] exist Figure 6 In the middle, the clamping head 31 forms a turning region 34, and the inlet hole section 12 of the mounting hole 10 forms a corresponding turning region 15. (And...) Figure 6 The difference lies in Figure 7 In the middle, a turning region 34 is constructed downstream of the clamping head 31, and a corresponding turning region 15 is constructed downstream of the inlet hole section 12.

[0067] In this context, "segment" is specifically understood as an axially divided section of the mounting hole and clamping element. Within a segment, the diameter remains essentially constant. Different segments generally have different diameters.

[0068] The dimensions, quantity, position, shape, and interrelationships of the elements in the accompanying drawings should be understood as examples, not as absolute limitations of this application. Those skilled in the art can also conceive of simple variations in the dimensions, quantity, position, shape, and interrelationships of these elements without departing from the scope of protection of this application.

[0069] In the accompanying drawings, there are multiple elements that have the same function. Sometimes only some of them are labeled as examples, but those skilled in the art can identify the other elements that have the same function without any doubt by the similarity between the shapes of these elements.

[0070] Provided that it is permissible in principle, each of the cited features can be considered as an individual feature and can be combined with any other feature in any form without departing from the scope of protection of this application. If it is permissible in principle, even if not explicitly stated, a feature described for one embodiment should be considered as being arbitrarily applicable to other embodiments.

[0071] Although specific embodiments of this application are described in detail herein, they are given for illustrative purposes only and should not be construed as limiting the scope of this application. Various substitutions, modifications, and alterations can be conceived without departing from the spirit and scope of this application.

[0072] List of reference numerals

[0073] 1. Shell

[0074] 10 mounting holes

[0075] 11 Mounting hole thread section

[0076] 12-inlet section

[0077] 120 bottom

[0078] 13 aperture segments

[0079] 14 support surfaces

[0080] 15 corresponds to the turning area

[0081] 2 fuel cell stacks

[0082] 3 clamping parts

[0083] 30 Clamping Part Thread Section

[0084] 300 threaded end face

[0085] 31 Clamping Head

[0086] 310 clamping head end face

[0087] 32 Sealing Section

[0088] 320 sealing section end face

[0089] 33 Compacting surface

[0090] 34 Turning Points

[0091] 35 slot

[0092] 36 outer end face

[0093] 37 mounting slots

[0094] 4. Resilient Seals

[0095] 41 Radial Seal

[0096] 42 Axial Seal

[0097] 43 Integrated sealing ring

[0098] 431 Radial sealing section

[0099] 432 Axial Seal Section

[0100] 5 Loading direction

[0101] 6. Central axis

Claims

1. An electrochemical battery device, characterized in that, The electrochemical battery device includes: The housing (1) has a mounting hole (10) and the mounting hole (10) has a mounting hole thread section (11); The fuel cell stack (2) is housed within the housing (1); A clamping member (3) suitable for installation in the mounting hole (10), the clamping member (3) having a clamping member threaded section (30) suitable for engaging with the threaded section (11) of the mounting hole; and An elastic seal (4) suitable for sealing the clamping member (3) relative to the mounting hole (10); In the assembled state, the clamping member (3) extends through the mounting hole (10) into the housing (1) to clamp the fuel cell stack (2).

2. The electrochemical battery device according to claim 1, characterized in that, The resilient seal (4) includes a radial sealing ring (41); and / or The resilient seal (4) includes an axial sealing ring (42); and / or The resilient seal (4) includes an integrated sealing ring (43), which comprises a radial sealing portion (431) and an axial sealing portion (432) integrally formed with each other; and / or The clamping member (3) has a clamping head (31), and the mounting hole (10) has an inlet section (12) for receiving the clamping head (31).

3. The electrochemical battery device according to claim 2, characterized in that, The mounting hole (10) has a smooth section (13), and the clamping member (3) has a non-threaded sealing section (32). In the assembled state, the radial sealing ring (41) is positioned between the smooth section (13) of the mounting hole (10) and the sealing section (32) of the clamping member (3) to achieve radial sealing; and / or The clamping member (3) or the mounting hole (10) is provided with a mounting groove (37) for mounting the radial sealing ring (41); and / or The radial sealing ring (41) has a circular cross-section.

4. The electrochemical battery device according to claim 3, characterized in that, Along the insertion direction (5) of the clamping member (3), the sealing section (32) of the clamping member (3) is located downstream of the threaded section (30) of the clamping member and the smooth section (13) of the mounting hole (10) is located downstream of the threaded section (11) of the mounting hole, and the diameter of the sealing section (32) of the clamping member (3) is smaller than the diameter of the threaded section (30) of the clamping member; The diameter of the smooth section (13) of the mounting hole (10) is smaller than the diameter of the threaded section (11) of the mounting hole; The sealing section (32) of the clamping member (3) is longer than the aperture section (13) of the mounting hole (10), and the sealing end face (320) of the sealing section (32) is adapted to clamp the fuel cell stack (2).

5. The electrochemical battery device according to claim 3, characterized in that, Along the insertion direction (5) of the clamping member (3), the sealing section (32) of the clamping member (3) is located upstream of the threaded section (30) of the clamping member and the smooth section (13) of the mounting hole (10) is located upstream of the threaded section (11) of the mounting hole, and the diameter of the smooth section (13) of the mounting hole (10) is larger than the diameter of the threaded section (11) of the mounting hole; The diameter of the sealing section (32) of the clamping member (3) is larger than the diameter of the threaded section (30) of the clamping member; The threaded section (30) of the clamping member (3) is longer than the threaded section (11) of the mounting hole (10), and the end face (300) of the threaded section (30) of the clamping member (3) is adapted to clamp the fuel cell stack (2); Along the insertion direction (5) of the clamping member (3), the sealing section (32) of the clamping member (3) is downstream of the clamping head (31) and the light hole section (13) of the mounting hole (10) is downstream of the inlet hole section (12), or the clamping head (31) of the clamping member (3) forms the sealing section (32) and the inlet hole section (12) of the mounting hole (10) forms the light hole section (13).

6. The electrochemical battery device according to claim 3, characterized in that, The sealing section (32) is cylindrical.

7. The electrochemical battery device according to claim 2, characterized in that, With the central axis (6) of the clamping member (3) and the mounting hole (10) as the axial direction, the clamping member (3) has a clamping surface (33) extending radially and the mounting hole (10) has a supporting surface (14) extending radially that mates with the clamping surface (33). In the assembled state, the axial sealing ring (42) is located axially between the clamping surface (33) of the clamping member (3) and the supporting surface (14) of the mounting hole (10). The clamping head end face (310) of the clamping member (3) facing the mounting hole (10) forms the clamping surface (33), and the bottom surface (120) of the inlet hole section (12) of the mounting hole (10) forms the support surface (14). Alternatively, along the insertion direction (5) of the clamping member (3), the clamping surface (33) is downstream of the clamping head (31) of the clamping member (3), and the support surface (14) is downstream of the inlet hole section (12). The axial sealing ring (42) has a square cross-section.

8. The electrochemical battery device according to claim 2, characterized in that, The clamping member (3) has a turning region (34), and the mounting hole (10) has a corresponding turning region (15) that mates with the turning region (34) of the clamping member (3). In the assembled state, the integrated sealing ring (43) is located between the turning region (34) of the clamping member (3) and the corresponding turning region (15) of the mounting hole (10).

9. The electrochemical battery device according to any one of claims 1 to 8, characterized in that, The electrochemical battery device is a fuel cell or an electrolyzer.

10. A vehicle drive system, characterized in that, The vehicle drive system includes an electrochemical battery device according to any one of claims 1 to 9.

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