An electric stack furnace device

Abstract

The present invention discloses a stack furnace device, which includes a furnace body, a cover body, a battery stack and a power lead-out device. The power lead-out device is arranged on the cover body and includes a power lead-out sleeve connected to the cover body, a lower lead-out electrode and an upper lead-out electrode arranged in the power lead-out sleeve, and a first insulating pad; the lower lead-out electrode is connected to the battery stack and includes a first electrode body and a first electrode boss arranged at the top of the first electrode body; the upper lead-out electrode includes a second electrode body and a second electrode boss arranged at the top of the first electrode body and abutted against the first electrode boss; the first insulating pad is located between the power lead-out sleeve and the lower lead-out electrode and the upper lead-out electrode. According to the stack furnace device of the present invention, the stability of the lower lead-out electrode and the upper lead-out electrode arranged in the power lead-out sleeve can be effectively ensured, the insulation performance between the power lead-out sleeve and the lower lead-out electrode and the upper lead-out electrode can be ensured, and further the safety, stability and reliability of the power lead-out from the battery stack can be ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of fuel cells, and more particularly to a stack furnace device. Background Art

[0002] A solid oxide fuel cell can convert the chemical energy stored in fuel into electrical energy, and is a power generation technology with high electrical efficiency, good waste heat quality, energy conservation and environmental protection. A stack furnace is a core component in a solid oxide fuel cell power generation system, and the stack therein is the place for power generation. How to safely introduce the gases required during the power generation process of the stack and safely lead out the generated electrical energy and gases to effectively improve the safety, stability and reliability of the stack furnace and the solid oxide fuel cell power generation system has become a technical problem that needs to be urgently solved by those skilled in the art.

[0003] Therefore, a stack furnace device is needed to at least partially solve the problems in the related art. Summary of the Invention

[0004] A series of simplified concepts are introduced in the Summary of the Invention section, which will be further elaborated in the Detailed Description section. The Summary of the Invention section of the present invention does not mean to attempt to define the key features and essential technical features of the claimed technical solution, nor does it mean to attempt to determine the protection scope of the claimed technical solution.

[0005] To at least partially solve the above problems, the present invention provides a stack furnace device, which includes:

[0006] A furnace body;

[0007] A cover body, which is arranged on the furnace body;

[0008] A battery stack, which is arranged in the furnace body;

[0009] An electrical power extractor, which is arranged on the cover body, and the electrical power extractor includes:

[0010] An electrical power extraction sleeve, which is connected to the cover body;

[0011] A lower extraction electrode, which is arranged in the electrical power extraction sleeve and connected to the battery stack, and the lower extraction electrode includes a first electrode body and a first electrode boss arranged at the top end of the first electrode body;

[0012] An upper extraction electrode, which is arranged in the electrical power extraction sleeve, and the upper extraction electrode includes a second electrode body and a second electrode boss arranged at the top end of the first electrode body, and the second electrode boss abuts against the first electrode boss;

[0013] A first insulating pad, the first insulating pad being located between the power lead-out sleeve and the lower lead-out electrode and the upper lead-out electrode.

[0014] In the stack furnace device according to the present invention, the power lead-out sleeve of the power lead-out device is connected to the cover body. By configuring the lower lead-out electrode to include a first electrode body and a first electrode boss provided at the top of the first electrode body, and the upper lead-out electrode to include a second electrode body and a second electrode boss provided at the top of the first electrode body, with the second electrode boss abutting against the first electrode boss, the stability of the lower lead-out electrode and the upper lead-out electrode arranged in the power lead-out sleeve can be effectively ensured. By providing the first insulating pad, the insulation performance between the power lead-out sleeve and the lower lead-out electrode and the upper lead-out electrode can be effectively ensured, thereby ensuring the safety, stability and reliability of the power lead-out from the battery stack.

[0015] Optionally, the stack furnace device further includes a gas lead-out device, the gas lead-out device being provided on the cover body, and the gas lead-out device including:

[0016] A gas lead-out sleeve, the gas lead-out sleeve being connected to the cover body;

[0017] A lower lead-out connecting pipe, the lower lead-out connecting pipe being provided in the gas lead-out sleeve and connected to the battery stack, the lower lead-out connecting pipe including a first connecting pipe body and a first connecting pipe boss provided at the upper part of the first connecting pipe body;

[0018] An upper lead-out connecting pipe, the upper lead-out connecting pipe being provided in the gas lead-out sleeve and above the lower lead-out connecting pipe, the upper lead-out connecting pipe including a second connecting pipe body and a second connecting pipe boss provided at the top of the second connecting pipe body, and a gap A being provided between the bottom of the upper lead-out connecting pipe and the top of the lower lead-out connecting pipe;

[0019] A second insulating pad, the second insulating pad being located between the gas lead-out sleeve and the upper lead-out connecting pipe and the lower lead-out connecting pipe;

[0020] A second pressing member, the second pressing member being connected to the gas lead-out sleeve and abutting against the upper surface of the second connecting pipe boss.

[0021] Optionally, the first insulating pad includes a first lower insulating pad, the first lower insulating pad being sleeved on the first electrode body and in contact with the first electrode boss and the bottom of the power lead-out sleeve, and along the length and width of the power lead-out device, the first electrode boss and the power lead-out sleeve are spaced apart.

[0022] Optionally, the first insulating pad further includes a first upper insulating pad, which is sleeved on the second electrode body and is located between the second electrode boss and the power lead-out sleeve, and the second electrode boss and the power lead-out sleeve are spaced apart along the length and width directions of the power lead-out device.

[0023] Optionally, along the height direction of the lower lead-out connection pipe, the first connection pipe body protrudes from the first connection pipe boss, and along the height direction of the upper lead-out connection pipe, the second connection pipe body protrudes from the second connection pipe boss. The second insulating pad includes a second upper insulating pad, which is sleeved on the first connection pipe body and the second connection pipe body and is located between the first connection pipe boss and the second connection pipe boss.

[0024] Optionally, the second insulating pad further includes a second lower insulating pad, which is sleeved on the first connection pipe body and is located between the first connection pipe boss and the gas lead-out sleeve.

[0025] Optionally, the clearance A between the bottom of the upper lead-out connection pipe and the top of the lower lead-out connection pipe satisfies: 3 mm ≤ A ≤ 4 mm.

[0026] Optionally, the power lead-out device further includes a first pressing member, which is connected to the power lead-out sleeve and abuts against the upper surface of the first upper insulating pad.

[0027] Optionally, the power lead-out sleeve is connected to the cover body by welding or screwing, and the gas lead-out sleeve is connected to the cover body by welding or screwing.

[0028] Optionally, the fuel cell stack furnace device further includes a fuel cell stack pressing device, which is connected to the fuel cell stack and extends beyond the cover body for adjusting the pressure on the fuel cell stack according to the temperature change of the fuel cell stack. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The following drawings of the embodiments of the present invention are hereby incorporated as a part of the present invention for understanding the present invention. The embodiments and descriptions thereof shown in the drawings are used to explain the principles of the present invention.

[0030] In the drawings:

[0031] Figure 1 is a schematic perspective view of a fuel cell stack furnace device according to a preferred embodiment of the present invention;

[0032] Figure 2 is a schematic structural view of the pressing device and the fuel cell stack assembly of the fuel cell stack furnace device according to a preferred embodiment of the present invention;

[0033] Figure 3 Schematic structural diagram of the power extractor of the stack furnace device according to a preferred embodiment of the present invention;

[0034] Figure 4 Schematic structural diagram of the gas extractor of the stack furnace device according to a preferred embodiment of the present invention.

[0035] Description of reference numerals:

[0036] 100: Stack furnace device 110: Furnace body

[0037] 120: Cover body 130: Battery stack

[0038] 140: Power extractor 141: Power extraction sleeve

[0039] 141a: Power extraction sleeve body 141b: Power extraction sleeve extension

[0040] 142: Lower extraction electrode 142a: First electrode body

[0041] 142b: First electrode boss 143: Upper extraction electrode

[0042] 143a: Second electrode body 143b: Second electrode boss

[0043] 144: First insulating pad 144a: First lower insulating pad

[0044] 144b: First upper insulating pad 145: First pressing member

[0045] 150: Gas extractor 151: Gas extraction sleeve

[0046] 151a: Gas extraction sleeve body 151b: Gas extraction sleeve extension

[0047] 152: Lower extraction connection pipe 152a: First connection pipe body

[0048] 152b: First connection pipe boss 153: Upper extraction connection pipe

[0049] 153a: Second connection pipe body 153b: Second connection pipe boss

[0050] 154: Second insulating pad 154a: Second upper insulating pad

[0051] 154b: Second lower insulating pad 155: Second pressing member

[0052] 160: Battery stack pressing device 170: Fastener Detailed implementation manners

[0053] In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. However, it will be apparent to one skilled in the art that embodiments of the present invention may be practiced without one or more of these specific details. In other instances, well-known features have not been described in order to avoid obscuring the embodiments of the present invention.

[0054] In order to thoroughly understand the present invention, a detailed description will be presented in the following to illustrate the stack furnace device of the present invention. Obviously, the implementation of the present invention is not limited to the specific details familiar to those skilled in the art of stack furnace devices. The preferred embodiments of the present invention are described in detail below. However, in addition to these detailed descriptions, the present invention may also have other embodiments.

[0055] Ordinal numbers such as "first" and "second" cited in the present invention are merely identifiers and do not have any other meanings, such as a specific order, etc. Moreover, for example, the term "first component" does not imply the existence of a "second component" by itself, and the term "second component" does not imply the existence of a "first component" by itself. The terms "upper", "lower", "front", "rear", "left", "right" and similar expressions used in the present invention are only for clarity and are not restrictive.

[0056] Hereinafter, specific embodiments of the present invention will be described in more detail with reference to the accompanying drawings, which show representative embodiments of the present invention and do not limit the present invention.

[0057] Reference Figure 1 and Figure 2 , the stack furnace device 100 according to a preferred embodiment of the present invention includes a furnace body 110, a cover body 120, a battery stack 130, a power extractor 140, and a gas extractor 150.

[0058] The furnace body 110 is generally constructed as a rectangular box structure. The furnace body 110 is preferably made of 310S stainless steel material to facilitate the processing and manufacturing of the furnace body 110 and effectively improve the temperature resistance of the furnace body 110. The battery stack 130 is disposed within the furnace body 110. The cover body 120 is covered on the furnace body 110 to form a relatively enclosed space therebetween, facilitating a certain protective effect on the battery stack 130.

[0059] The power extractor 140 is disposed on the cover body 120 and is connected to the battery stack 130 to extract the electric energy generated by the battery stack 130. The power extractor 140 includes a power extraction sleeve 141, a lower extraction electrode 142, an upper extraction electrode 143, and a first insulating pad 144.

[0060] Specifically referring to Figure 3, a power lead sleeve 141 is provided on the cover 120. The power lead sleeve 141 is preferably configured to include a power lead sleeve body 141a and a power lead sleeve extension 141b. The power lead sleeve extension 141b is circumferentially provided at the lower part of the power lead sleeve body 141a and extends into the power lead sleeve body 141a.

[0061] In the illustrated embodiment, the power lead sleeve 141 is screwed to the cover 120 by a fastener 170 such as a screw. For example, the power lead sleeve extension 141b is screwed to the cover 120 by a fastener 170 such as a screw, so as to facilitate the detachable connection between the power lead sleeve 141 and the cover 120. It can be understood that the power lead sleeve 141 can also be connected to the cover 120 by means such as welding or riveting. When using the welding method for connection, it is preferably full welding to improve the connection strength and ensure good sealing performance.

[0062] The lower lead electrode 142 is provided in the power lead sleeve 141, and its lower end extends beyond the power lead sleeve 141, that is, beyond the power lead sleeve extension 141b, to be connected to the battery stack 130. The lower lead electrode 142 is preferably configured as a cylindrical structure and made of 310S stainless steel material, so as to facilitate the processing and manufacturing of the lower lead electrode 142 and effectively improve the electrical conductivity and temperature resistance of the lower lead electrode 142.

[0063] The lower lead electrode 142 is preferably configured to include a first electrode body 142a and a first electrode boss 142b. The first electrode boss 142b is circumferentially provided at the top of the first electrode body 142a and extends in a direction away from the first electrode body 142a. The first electrode boss 142b can cooperate with the power lead sleeve extension 141b to fix the lower lead electrode 142 and ensure the stability of the lower lead electrode 142 disposed in the power lead sleeve 141.

[0064] The upper lead electrode 143 is also provided in the power lead sleeve 141 and is disposed above the lower lead electrode 142. The bottom of the upper lead electrode 143 is in contact with the top of the lower lead electrode 142, and the upper lead electrode 143 can be connected to a component such as an external load to draw out the electric energy generated by the battery stack 130. The upper lead electrode 143 is preferably configured as a cylindrical structure and made of 310S stainless steel material, so as to facilitate the processing and manufacturing of the upper lead electrode 143 and effectively improve the electrical conductivity and temperature resistance of the upper lead electrode 143.

[0065] The upper lead-out electrode 143 is preferably configured to include a second electrode body 143a and a second electrode boss 143b. The second electrode boss 143b is circumferentially arranged at the bottom end of the second electrode body 143a and extends in a direction away from the second electrode body 143a. The upper lead-out electrode 143 and the lower lead-out electrode 142 are connected by the abutment of the second electrode boss 143b and the first electrode boss 142b, so as to effectively increase the contact area between the upper lead-out electrode 143 and the lower lead-out electrode 142, and further ensure the stability of the electric energy transmission to the battery stack 130.

[0066] The upper surface of the first electrode boss 142b and the upper surface of the first electrode body 142a are preferably configured to be flush. Similarly, the lower surface of the second electrode boss 143b and the lower surface of the second electrode body 143a are also preferably configured to be flush, so as to ensure the good contact between the two while increasing the contact area between the upper lead-out electrode 143 and the lower lead-out electrode 142.

[0067] The first insulating pad 144 is arranged between the power lead-out sleeve 141 and the lower lead-out electrode 142 and the upper lead-out electrode 143 to ensure the insulation between the power lead-out sleeve 141 and the upper lead-out electrode 143 and the lower lead-out electrode 142, and further ensure the safety, stability and reliability of the power lead-out to the battery stack 130. The first insulating pad 144 can be made of an inorganic non-metallic material such as ceramics.

[0068] In Figure 3 In the illustrated embodiment, the first insulating pad 144 includes a first lower insulating pad 144a. The first lower insulating pad 144a is sleeved on the first electrode body 142a and contacts the first electrode boss 142b and the bottom of the power lead-out sleeve 141. That is to say, along the height direction of the power lead-out device 140, the first lower insulating pad 144a is located between the first electrode boss 142b and the power lead-out sleeve extension 141b. Along the length and width directions of the power lead-out device 140, the first lower insulating pad 144a is located between the first electrode body 142a and the power lead-out sleeve body 141a. The first electrode boss 142b and the power lead-out sleeve extension 141b can fix the first lower insulating pad 144a to effectively ensure the insulation performance between the lower lead-out electrode 142 and the power lead-out sleeve 141. And along the length and width directions of the power lead-out device 140, the first electrode boss 142b and the power lead-out sleeve 141 are arranged at intervals, that is, the first electrode boss 142b and the power lead-out sleeve body 141a are arranged at intervals, so as to ensure the insulation performance between the first electrode boss 142b and the power lead-out sleeve body 141a.

[0069] The first insulating pad 144 further includes a first upper insulating pad 144b. The first upper insulating pad 144b is sleeved on the second electrode body 143a and is located between the second electrode boss 143b and the power lead-out sleeve 141. That is to say, along the height direction of the power lead-out device 140, the lower surface of the first upper insulating pad 144b abuts against the upper surface of the second electrode boss 143b. Along the length and width directions of the power lead-out device 140, the first upper insulating pad 144b is located between the second electrode body 143a and the power lead-out sleeve body 141a to effectively ensure the insulation performance between the upper lead-out electrode 143 and the power lead-out sleeve 141. And along the length and width directions of the power lead-out device 140, the second electrode boss 143b and the power lead-out sleeve 141 are arranged at intervals, that is, the second electrode boss 143b and the power lead-out sleeve body 141a are arranged at intervals to ensure the insulation performance between the second electrode boss 143b and the power lead-out sleeve body 141a.

[0070] To fix the first upper insulating pad 144b and the upper lead-out electrode 143, the power lead-out device 140 further includes a first pressing member 145. The first pressing member 145 is connected to the power lead-out sleeve 141 and abuts against the upper surface of the first upper insulating pad 144b. For specific reference Figure 3 . The first pressing member 145 is sleeved on the first electrode body 142a and is arranged at intervals with the electrode body to ensure the insulation performance between the first pressing member 145 and the upper lead-out electrode 143 while realizing the fixing effect on the upper lead-out electrode 143.

[0071] The connection between the first pressing member 145 and the power lead-out sleeve 141 can be realized by screwing. For example, the first pressing member 145 is configured in the form of a pressing nut. An external thread is provided at the lower part of the pressing nut, and an internal thread is provided at the upper part of the power lead-out sleeve 141. Through the cooperation of the external thread and the internal thread, the pressing nut can be fixed to the power lead-out sleeve 141.

[0072] It can be understood that in an embodiment not shown, the fixing effect on the upper lead-out electrode 143 can also be realized through the first upper insulating pad 144b. For example, an external thread is provided on the outer surface of the first upper insulating pad 144b, and an internal thread is provided at the upper part of the power lead-out sleeve 141. Through the cooperation of the external thread and the internal thread, while fixing the first upper insulating pad 144b to the power lead-out sleeve 141, the fixing effect on the upper lead-out electrode 143 is realized.

[0073] The gas lead-out device 150 is arranged on the cover body 120 and is connected to the battery stack 130, and is used to introduce the gas required for the battery stack 130 to generate electricity and lead out the gas generated by the battery stack 130 when generating electricity. The gas lead-out device 150 includes a gas lead-out sleeve 151, a lower lead-out connecting pipe 152, an upper lead-out connecting pipe 153, a second insulating pad 154 and a second pressing member 155.

[0074] Specifically referring to Figure 4 , the gas extraction sleeve 151 is provided on the cover body 120. The gas extraction sleeve 151 is preferably configured to include a gas extraction sleeve body 151a and a gas extraction sleeve extension 151b. The gas extraction sleeve extension 151b is circumferentially provided at the lower part of the gas extraction sleeve body 151a and extends into the interior of the gas extraction sleeve body 151a.

[0075] In the illustrated embodiment, the gas extraction sleeve 151 is screwed to the cover body 120 by a fastener 170 such as a screw. For example, the gas extraction sleeve extension 151b is screwed to the cover body 120 by a fastener 170 such as a screw, so as to facilitate the detachable connection between the gas extraction sleeve 151 and the cover body 120. It can be understood that the gas extraction sleeve 151 can also be connected to the cover body 120 by means such as welding or riveting. When using the welding method for connection, preferably the full welding method is adopted to improve the connection strength and ensure good sealing performance.

[0076] The lower extraction pipe 152 is provided in the gas extraction sleeve 151, and its lower end extends beyond the gas extraction sleeve 151, that is, beyond the gas extraction sleeve extension 151b, to be connected to the battery stack 130. The lower extraction pipe 152 is preferably configured as a hollow cylindrical structure and made of 310S stainless steel material, so as to facilitate the processing and manufacturing of the lower extraction pipe 152 and effectively improve the temperature resistance of the lower extraction pipe 152.

[0077] The lower extraction pipe 152 is preferably configured to include a first pipe body 152a and a first pipe boss 152b. The first pipe boss 152b is circumferentially provided at the top of the first pipe body 152a and extends in a direction away from the first pipe body 152a. The first pipe boss 152b can cooperate with the gas extraction sleeve extension 151b to achieve the fixing effect on the lower extraction pipe 152 and ensure the stability of the lower extraction pipe 152 arranged in the gas extraction sleeve 151.

[0078] The upper extraction pipe 153 is also provided in the gas extraction sleeve 151 and is arranged above the lower extraction pipe 152. The upper extraction pipe 153 is preferably configured as a hollow cylindrical structure and made of 310S stainless steel material, so as to facilitate the processing and manufacturing of the upper extraction pipe 153 and effectively improve the temperature resistance of the upper extraction pipe 153.

[0079] A gap A is provided between the bottom of the upper outlet nozzle 153 and the top of the lower outlet nozzle 152 to ensure the insulation performance between the two, thereby ensuring the insulation, safety, and reliability of gas transmission. The gap A is preferably set to satisfy 3 mm ≤ A ≤ 4 mm to achieve the compactness of the structure of the gas extractor 150 while ensuring the insulation performance between the upper outlet nozzle 153 and the lower outlet nozzle 152.

[0080] The upper outlet nozzle 153 is preferably configured to include a second nozzle body 153a and a second nozzle boss 153b. The second nozzle boss 153b is circumferentially provided at the bottom end of the second nozzle body 153a along the second nozzle body 153a and extends in a direction away from the second nozzle body 153a.

[0081] A second insulating pad 154 is provided between the gas extraction sleeve 151 and the lower outlet nozzle 152 and the upper outlet nozzle 153 to ensure the insulation between the gas extraction sleeve 151 and the upper outlet nozzle 153 and the lower outlet nozzle 152, thereby ensuring the safety, stability, and reliability of gas extraction from the battery stack 130. The second insulating pad 154 can be made of an inorganic non-metallic material such as ceramics.

[0082] In Figure 4 the illustrated embodiment, the second insulating pad 154 includes a second upper insulating pad 154a, and the second upper insulating pad 154a is provided at the gap A and the gas extraction sleeve body 151a to achieve the sealing of the gas at the gap A and ensure the insulation performance between the gas at the gap A and the power extraction sleeve 141.

[0083] To facilitate the setting of the second upper insulating pad 154a, the upper surface of the first nozzle boss 152b preferably protrudes from the upper surface of the first nozzle body 152a to form a stepped structure at the top end of the lower outlet nozzle 152. The lower surface of the second nozzle boss 153b preferably protrudes from the lower surface of the second nozzle body 153a to form a stepped structure at the bottom end of the upper outlet nozzle 153. The second upper insulating pad 154a can be sleeved on the first nozzle body 152a and the second nozzle body 153a and is located between the first nozzle boss 152b and the second nozzle boss 153b. That is to say, along the height direction of the gas extractor 150, the second upper insulating pad 154a is located between the first nozzle boss 152b and the second nozzle boss 153b. Along the length and width directions of the gas extractor 150, the second upper insulating pad 154a is located between the gas extraction sleeve 151 body and the first nozzle body 152a and the second nozzle body 153a to ensure the stability of the setting of the second upper insulating pad 154a.

[0084] The second insulating pad 154 further includes a second lower insulating pad 154b. The second lower insulating pad 154b is sleeved on the second pipe connection body 153a and is located between the second pipe connection boss 153b and the gas extraction sleeve 151. That is to say, along the height direction of the gas extractor 150, the second lower insulating pad 154b is located between the second pipe connection boss 153b and the gas extraction sleeve extension 151b. Along the length and width directions of the gas extractor 150, the second lower insulating pad 154b is located between the second pipe connection body 153a and the gas extraction sleeve body 151a. The second pipe connection boss 153b and the gas extraction sleeve extension 151b can fix the second lower insulating pad 154b to effectively ensure the insulation performance between the lower extraction pipe 152 and the gas extraction sleeve 151.

[0085] To ensure the insulation performance between the first pipe connection boss 152b and the gas extraction sleeve 151, and along the length and width directions of the gas extractor 150, the first pipe connection boss 152b and the gas extraction sleeve 151 are arranged at intervals, that is, the first pipe connection boss 152b and the gas extraction sleeve body 151a are arranged at intervals.

[0086] Similarly, along the length and width directions of the gas extractor 150, the second pipe connection boss 153b and the gas extraction sleeve 151 are arranged at intervals, that is, the second pipe connection boss 153b and the gas extraction sleeve body 151a are arranged at intervals to ensure the insulation performance between the second pipe connection boss 153b and the gas extraction sleeve body 151a.

[0087] To fix the upper extraction pipe 153, the gas extractor 150 further includes a second pressing member 155. The second pressing member 155 is sleeved on the second pipe connection body 153a, connected to the gas extraction sleeve 151, and abuts against the upper surface of the second pipe connection boss 153b. For specific reference Figure 4 .

[0088] The connection between the second pressing member 155 and the gas extraction sleeve 151 can be realized by screwing. For example, the second pressing member 155 is configured in the form of a pressing nut. An external thread is provided at the lower part of the pressing nut, and an internal thread is provided at the upper part of the gas extraction sleeve 151. Through the cooperation of the external thread and the internal thread, the pressing nut can be fixed to the gas extraction sleeve 151.

[0089] In addition, to ensure the safe operation of the battery stack 130, the stack furnace device 100 preferably further includes a battery stack pressing device 160. For specific reference Figure 1 and Figure 2。The battery stack compression device 160 is connected to the battery stack 130, capable of applying an initial compression force to the battery stack 130, and the pressure on the battery stack 130 can be automatically adjusted according to the temperature change of the battery stack 130, which can effectively avoid the structural deformation of the battery stack 130 during the operation of the fuel cell stack furnace device 100, prevent the structural rupture of the battery stack 130, and further ensure the safe operation of the fuel cell stack furnace device 100 and the solid oxide fuel cell power generation system.

[0090] In Figure 1 the illustrated embodiment, the operable portion of the battery stack compression device 160 extends beyond the cover 120 to facilitate the relevant operations by the operator.

[0091] Unless otherwise defined, the technical and scientific terms used herein have the same meanings as commonly understood by those skilled in the technical field of the present invention. The terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention. Terms such as "arranged" that appear herein can either mean that one component is directly attached to another component or that one component is attached to another component through an intermediate member. The features described in one embodiment herein can be applied to another embodiment alone or in combination with other features, unless the feature is not applicable or otherwise stated in that other embodiment.

[0092] The present invention has been described by the above embodiments, but it should be understood that the above embodiments are only for the purpose of illustration and example, and are not intended to limit the present invention within the scope of the described embodiments. Those skilled in the art can understand that more variations and modifications can be made according to the teachings of the present invention, and these variations and modifications all fall within the scope claimed by the present invention.

Claims

1. An electric stack furnace device, characterized in that, The fuel cell stack furnace device includes: A furnace body; A cover body, which is arranged on the furnace body; A fuel cell stack, which is arranged in the furnace body; A power lead-out device, which is arranged on the cover body. The power lead-out device includes: A power lead-out sleeve, which is connected to the cover body; A lower lead-out electrode, which is arranged in the power lead-out sleeve and connected to the fuel cell stack. The lower lead-out electrode includes a first electrode body and a first electrode boss arranged at the top of the first electrode body; An upper lead-out electrode, which is arranged in the power lead-out sleeve. The upper lead-out electrode includes a second electrode body and a second electrode boss arranged at the top of the first electrode body. The second electrode boss abuts against the first electrode boss; A first insulating pad, which is located between the power lead-out sleeve and the lower lead-out electrode and the upper lead-out electrode.

2. The fuel cell stack furnace device according to claim 1, characterized in that The fuel cell stack furnace device further includes a gas lead-out device, which is arranged on the cover body. The gas lead-out device includes: A gas lead-out sleeve, which is connected to the cover body; A lower lead-out connecting pipe, which is arranged in the gas lead-out sleeve and connected to the fuel cell stack. The lower lead-out connecting pipe includes a first connecting pipe body and a first connecting pipe boss arranged at the upper part of the first connecting pipe body; An upper lead-out connecting pipe, which is arranged in the gas lead-out sleeve and above the lower lead-out connecting pipe. The upper lead-out connecting pipe includes a second connecting pipe body and a second connecting pipe boss arranged at the top of the second connecting pipe body. A gap A is provided between the bottom of the upper lead-out connecting pipe and the top of the lower lead-out connecting pipe; A second insulating pad, which is located between the gas lead-out sleeve and the upper lead-out connecting pipe and the lower lead-out connecting pipe; A second pressing member, which is connected to the gas lead-out sleeve and abuts against the upper surface of the second connecting pipe boss.

3. The fuel cell stack furnace device according to claim 1, characterized in that, The first insulating pad includes a first lower insulating pad, which is sleeved on the first electrode body and contacts the first electrode boss and the bottom of the power lead-out sleeve. Along the length and width directions of the power lead-out device, the first electrode boss and the power lead-out sleeve are arranged at intervals.

4. The fuel cell stack furnace device according to claim 3, characterized in that, The first insulating pad further includes a first upper insulating pad, which is sleeved on the second electrode body and located between the second electrode boss and the power lead-out sleeve. Along the length and width directions of the power lead-out device, the second electrode boss and the power lead-out sleeve are arranged at intervals.

5. The fuel cell stack furnace device according to claim 2, characterized in that, Along the height direction of the lower lead-out connecting pipe, the first connecting pipe body protrudes from the first connecting pipe boss. Along the height direction of the upper lead-out connecting pipe, the second connecting pipe body protrudes from the second connecting pipe boss. The second insulating pad includes a second upper insulating pad, which is sleeved on the first connecting pipe body and the second connecting pipe body and located between the first connecting pipe boss and the second connecting pipe boss.

6. The electro-hearth furnace device according to claim 5, characterized in that The second insulating pad further includes a second lower insulating pad, which is sleeved on the first connecting pipe body and is located between the first connecting pipe boss and the gas outlet sleeve.

7. The fuel cell stack furnace device according to claim 2, characterized in that, The gap A between the bottom of the upper outlet connecting pipe and the top of the lower outlet connecting pipe satisfies: 3 mm ≤ A ≤ 4 mm.

8. The fuel cell stack furnace device according to claim 4, characterized in that, The power lead-out device further includes a first pressing member, which is connected to the power lead-out sleeve and abuts against the upper surface of the first upper insulating pad.

9. The fuel cell stack furnace device according to claim 2, characterized in that, The power lead-out sleeve is connected to the cover body by welding or screwing, and the gas outlet sleeve is connected to the cover body by welding or screwing.

10. The fuel cell stack furnace device according to claim 1, characterized in that, The fuel cell stack furnace device further includes a fuel cell stack pressing device, which is connected to the fuel cell stack and extends beyond the cover body, and is used to adjust the pressure on the fuel cell stack according to the temperature change of the fuel cell stack.

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