Solid oxide fuel stack cooling device
By designing a solid oxide fuel cell stack cooling device including a thermal conductive component and a spring, the problem that the existing cooling device cannot adapt to the thermal expansion and contraction of the core pack end plate is solved, and a more efficient cooling effect is achieved.
Patent Information
- Application Number
- CN202420876112.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-25
- Publication Date
- 2025-01-24
- Estimated Expiration
- 2034-04-25
AI Technical Summary
The existing solid oxide fuel stack cooling device cannot adapt to the thermal expansion and contraction changes of the core group end plate, resulting in a reduced cooling effect.
A solid oxide fuel cell stack cooling device is designed, which includes a base plate, a first cold water strip, a second cold water strip, a thermal conductive component and a spring. Cold water flows through the cold water strips, the heat-conducting components absorb high temperatures, and the springs adapt to the thermal expansion and contraction of the core pack end plate to ensure a close fit between the cooling device and the core pack end plate.
By adapting to the changes in thermal expansion and cold shrinkage of the end plate, the cooling effect is guaranteed, and the fit and cooling efficiency of the cooling device are improved.
Smart Images
Figure CN222394837U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of fuel cells, in particular to a solid oxide fuel cell stack cooling device. Background Art
[0002] Solid oxide fuel cell (SOFC) is a high-temperature electrochemical power generation device that uses solid oxide as an electrolyte to directly convert the chemical energy of fuel into electrical energy; solid oxide fuel cell stack refers to stacking multiple SOFC units to form an integral structure to increase output power and current density. With the development of SOFC technology, SOFC products are gradually evolving towards high power, high density, and multi-core group combinations; the core group end plate of the solid oxide fuel cell stack needs to be cooled after it expands due to high temperature. Since the existing solid oxide fuel cell stack cooling device cannot adapt to the thermal expansion and contraction of the core group end plate, the fit between the cooling device and the core group end plate is poor after the core group end plate is heated and cooled, which in turn reduces the cooling effect of the cooling device; for this reason, we propose a solid oxide fuel cell stack cooling device. Utility Model Content
[0003] The utility model aims to provide a solid oxide fuel cell stack cooling device to solve the technical problem that the existing solid oxide fuel cell stack cooling device cannot adapt to the thermal expansion and contraction changes of the core group end plate.
[0004] To achieve the above-mentioned purpose, the utility model provides a solid oxide fuel cell stack cooling device, comprising a base plate, a first cold water strip, and a second cold water strip, wherein the first cold water strip and the second cold water strip are symmetrically arranged on the base plate, the input end of the first cold water strip is provided with a water inlet pipe, the output end of the first cold water strip is connected to the second cold water strip through a connecting pipe, and the output end of the second cold water strip is provided with a water outlet pipe; it also includes a fixing component, a heat conducting component and a spring symmetrically arranged on the first cold water strip and the second cold water strip, the first cold water strip is connected to the base plate through the fixing component, the heat conducting component is arranged on the top of the first cold water strip, and the spring is arranged at the interval between the first cold water strip and the base plate.
[0005] Furthermore, there are four springs, which are distributed at intervals between the first cold water strip and the bottom plate.
[0006] Furthermore, the water inlet pipe, the water outlet pipe and the connecting pipe are all U-shaped.
[0007] Furthermore, the heat-conducting component includes heat-conducting silicone, and the heat-conducting silicone is arranged on the first cold water strip. The first cold water strip is provided with a groove matching the heat-conducting silicone, and the heat-conducting silicone is attached to the bottom of the groove.
[0008] Furthermore, the heat conduction component also includes a contact block, and the contact block is arranged on the first cold water bar, and the first cold water bar is provided with a slot matching the contact block.
[0009] Furthermore, the contact blocks and the thermally conductive silica gel are each provided in two groups.
[0010] Furthermore, the fixing assembly includes a ferrule joint, which is arranged at both ends of the first cold water strip, and the water outlet pipe and the connecting pipe are both connected to the first cold water strip through the ferrule joint.
[0011] Furthermore, the fixing assembly also includes a limiting plate, which is arranged on the top of the first cold water strip and the second cold water strip, and the limiting plate is fixedly connected to the bottom plate.
[0012] Furthermore, a plurality of through holes are equidistantly spaced on the limiting plate.
[0013] Furthermore, the fixing assembly also includes a guide column, which is arranged at the bottom of the through hole, one end of the guide column is bolted to the limit plate through the through hole, and the other end of the guide column is fixedly connected to the bottom plate.
[0014] The beneficial effects of the utility model include:
[0015] 1. The solid oxide fuel cell stack cooling device provided by the utility model is installed in close contact with the core group end plate during actual use. After cold water enters from the water inlet pipe, it passes through the first cold water strip, the connecting pipe, the second cold water strip and the water outlet pipe in sequence. By arranging a heat-conducting component and a spring, when the core group end plate expands due to heat, the first cold water strip and the second cold water strip compress the spring, and the heat-conducting component absorbs the high temperature of the core group end plate. When the core group end plate cools and contracts, the first cold water strip and the second cold water strip restore the close contact with the core group end plate under the action of the spring, so as to adapt to the thermal expansion and contraction changes of the core group end plate and ensure the cooling effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments of the utility model will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.
[0017] Figure 1 A schematic diagram of the overall structure of a solid oxide fuel cell stack cooling device provided in an embodiment of the utility model;
[0018] Figure 2A schematic diagram of a portion of the structure of a solid oxide fuel cell stack cooling device provided in an embodiment of the utility model;
[0019] Figure 3 A schematic diagram of the structure of a first cold water strip provided in an embodiment of the utility model;
[0020] Icon: 100-bottom plate, 200-first cold water bar, 210-water inlet pipe, 220-connecting pipe, 230-thermal conductive silicone, 231-groove, 240-contact block, 241-card slot, 300-second cold water bar, 310-water outlet pipe, 320-card sleeve, 330-limiting plate, 340-guide column, 400-spring. DETAILED DESCRIPTION
[0021] The technical solutions in the embodiments of the present invention will be described below in conjunction with the accompanying drawings in the embodiments of the present invention.
[0022] It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. It should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the utility model product is usually placed when in use. It is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply 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 a limitation on the present application. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.
[0023] See also Figures 1 to 3As shown, the present disclosure provides a solid oxide fuel cell stack cooling device, comprising a base plate 100, a first cold water strip 200, and a second cold water strip 300, wherein the first cold water strip 200 and the second cold water strip 300 are symmetrically arranged on the base plate 100, an input end of the first cold water strip 200 is provided with a water inlet pipe 210, an output end of the first cold water strip 200 is connected to the second cold water strip through a connecting pipe 220, and an output end of the second cold water strip 300 is provided with a water outlet pipe 310; and further comprising a symmetrically arranged first cold water strip 200 The fixing component, the heat-conducting component and the spring 400 on the second cold water bar 300, the first cold water bar 200 is connected to the bottom plate 100 through the fixing component, the heat-conducting component is arranged on the top of the first cold water bar 200, and the spring 400 is arranged at the interval between the first cold water bar 200 and the bottom plate 100; specifically, the first cold water bar 200 and the second cold water bar 300 are preferably square bars made of hollow aluminum; the heat-conducting component can be a device capable of achieving heat conduction, such as a heat pipe, a heat-conducting plate, a heat-conducting pad, etc. The first cold water strip 200 and the second cold water strip 300 are of the same structure, and the cold water flows through the two cold water strips in sequence, which can increase the heat conduction area and ensure the cooling effect of the core group end plate (not shown in the figure); in actual use, the cooling device is installed in close contact with the core group end plate, and the cold water enters from the water inlet pipe 210 and passes through the first cold water strip 200, the connecting pipe 220, the second cold water strip 300 and the water outlet pipe 310 in sequence; by setting the heat conduction component and the spring 400, when the core group end plate is heated and expanded, the first cold water strip 200 is connected to the connecting pipe 220, the second cold water strip 300 and the water outlet pipe 310; The water bar 200 and the second cold water bar 300 compress the spring 400, and the heat conductive component absorbs the high temperature of the core group end plate; when the core group end plate cools and shrinks, the first cold water bar 200 and the second cold water bar 300 restore the close fit between the core group end plate under the action of the spring 400, so as to adapt to the thermal expansion and contraction changes of the core group end plate and ensure the cooling effect; it should be noted that the number of the first cold water bar 200 and the second cold water bar 300 can also be adjusted and adapted according to the actual demand for the number of solid oxide fuel cell core groups;
[0024] Preferably, four springs 400 are provided, and the four springs 400 are distributed at intervals between the first cold water bar 200 and the bottom plate 100; a circular groove 231 for installing the spring 400 needs to be provided on the first cold water bar 200 and the bottom plate 100; in this embodiment, a total of eight springs 400 are provided on the bottom plate 100, and four springs 400 are provided at the bottom of the first cold water bar 200 and the second cold water bar 300, respectively, to ensure that the springs 400 exert a uniform force on the cold water bar, maintain a close fit between the cold water bar and the bottom plate 100, and help provide stable support and adjustment during the thermal expansion and contraction of the core group end plate.
[0025] Preferably, the water inlet pipe 210, the water outlet pipe 310, and the connecting pipe 220 are all U-shaped. The U-shaped water inlet pipe 210, the water outlet pipe 310, and the connecting pipe 220 make the pipes have a certain elasticity and flexibility, which can prevent the first cold water strip 200 and the second cold water strip 300 from being stuck when moving, and avoid failure of the spring 400;
[0026] Preferably, the heat-conducting component includes a heat-conducting silicone 230, which is arranged on the first cold water strip 200, and the first cold water strip 200 is provided with a groove 231 matching the heat-conducting silicone 230, and the heat-conducting silicone 230 is attached to the bottom of the groove 231. The heat-conducting component also includes a contact block 240, which is arranged on the first cold water strip 200, and the first cold water strip 200 is provided with a slot 241 matching the contact block 240. The contact block 240 and the heat-conducting silicone 230 are both provided with two groups; wherein the contact block 240 is preferably made of aluminum, and the contact block 240 can also be made of other metal materials with good thermal conductivity In this embodiment, two groups of heat-conducting silicone rubber 230 and contact blocks 240 are arranged on the first cold water strip 200 and the second cold water strip 300 respectively, and part of the heat of the core group end plate is transferred to the first cold water strip 200 and the second cold water strip 300 through the heat-conducting silicone rubber 230, and another part of the heat is transferred to the first cold water strip 200 and the second cold water strip 300 through the contact blocks 240; because the heat-conducting silicone rubber 230 is an elastic material, when the core group end plate is heated and expanded, the heat-conducting silicone rubber 230 has a certain compression performance after being stressed, and then the contact block 240 will follow the deformation displacement of the heat-conducting silicone rubber 230, and finally make the contact block 240 and the core group end plate fit more closely;
[0027] Preferably, the fixing assembly includes a ferrule joint, which is provided at both ends of the first cold water strip 200, and the water outlet pipe 310 and the connecting pipe 220 are connected to the first cold water strip 200 through the ferrule joint. The fixing assembly also includes a limit plate 330, which is provided at the top of the first cold water strip 200 and the second cold water strip 300, and the limit plate 330 is fixedly connected to the bottom plate 100, and a plurality of through holes are equidistantly provided on the limit plate 330. The fixing assembly also includes a guide column 340, which is provided at the bottom of the through hole, and one end of the guide column 340 is bolted to the limit plate 330 through the through hole, and the other end of the guide column 340 is fixedly connected to the bottom plate 100; wherein, as Figure 3As shown, arc-shaped grooves matching the guide column 340 are provided on the sides at both ends of the first cold water bar 200 and the second cold water bar 300, and threaded holes matching the ferrule joints are provided at both ends of the first cold water bar 200 and the second cold water bar 300; by providing the ferrule joints, a sealed connection between the water inlet pipe 210, the water outlet pipe 310, the connecting pipe 220 and the first cold water bar 200 and the second cold water bar 300 is ensured; by providing the limiting plate 330 and the guide column 340, the first cold water bar 200 and the second cold water bar 300 can reciprocate along the length direction of the guide column 340, and the limiting plate 330 prevents the first cold water bar 200 and the second cold water bar 300 from falling off, thereby improving the stability and safety of the cooling device.
[0028] In addition to the above description, there are a few points to note:
[0029] (1) The drawings of the embodiments of the present disclosure only relate to the structures related to the embodiments of the present disclosure, and other structures may refer to the general design;
[0030] (2) In the absence of conflict, the embodiments of the present disclosure and the features therein may be combined with each other to obtain new embodiments.
[0031] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.
Claims
1. A solid oxide fuel cell stack cooling device, characterized in that: The invention comprises a bottom plate (100), a first cold water strip (200), and a second cold water strip (300), wherein the first cold water strip (200) and the second cold water strip (300) are symmetrically arranged on the bottom plate (100), an input end of the first cold water strip (200) is provided with a water inlet pipe (210), an output end of the first cold water strip (200) is connected to the second cold water strip via a connecting pipe (220), and an output end of the second cold water strip (300) is provided with a water outlet pipe (310); and further comprises a fixing component, a heat conducting component, and a spring (400) symmetrically arranged on the first cold water strip (200) and the second cold water strip (300), wherein the first cold water strip (200) is connected to the bottom plate (100) via the fixing component, the heat conducting component is arranged at the top of the first cold water strip (200), and the spring (400) is arranged at the interval between the first cold water strip (200) and the bottom plate (100).
2. The solid oxide fuel cell stack cooling device according to claim 1, characterized in that: Four springs (400) are provided, and the four springs (400) are distributed at intervals between the first cold water bar (200) and the bottom plate (100).
3. The solid oxide fuel cell stack cooling device according to claim 1, characterized in that: The water inlet pipe (210), the water outlet pipe (310), and the connecting pipe (220) are all U-shaped.
4. The solid oxide fuel cell stack cooling device according to claim 1, characterized in that: The heat-conducting component comprises heat-conducting silica gel (230), the heat-conducting silica gel (230) is arranged on the first cold water strip (200), the first cold water strip (200) is provided with a groove (231) matching the heat-conducting silica gel (230), and the heat-conducting silica gel (230) is attached to the bottom of the groove (231).
5. The solid oxide fuel cell stack cooling device according to claim 4, characterized in that: The heat-conducting component further comprises a contact block (240), wherein the contact block (240) is arranged on the first cold water bar (200), and the first cold water bar (200) is provided with a slot (241) matching the contact block (240).
6. The solid oxide fuel cell stack cooling device according to claim 5, characterized in that: The contact block (240) and the thermal conductive silica gel (230) are each provided in two groups.
7. The solid oxide fuel cell stack cooling device according to any one of claims 1 to 6, characterized in that: The fixing assembly comprises a ferrule joint, which is arranged at both ends of the first cold water strip (200), and the water outlet pipe (310) and the connecting pipe (220) are both connected to the first cold water strip (200) via the ferrule joint.
8. The solid oxide fuel cell stack cooling device according to claim 7, characterized in that: The fixing assembly further comprises a limiting plate (330), wherein the limiting plate (330) is arranged on the top of the first cold water strip (200) and the second cold water strip (300), and the limiting plate (330) is fixedly connected to the bottom plate (100).
9. The solid oxide fuel cell stack cooling device according to claim 8, characterized in that: The limiting plate (330) is provided with a plurality of through holes at equal intervals.
10. The solid oxide fuel cell stack cooling device according to claim 9, characterized in that: The fixing assembly further comprises a guide column (340), wherein the guide column (340) is arranged at the bottom of the through hole, one end of the guide column (340) is bolted to the limiting plate (330) through the through hole, and the other end of the guide column (340) is fixedly connected to the bottom plate (100).