CN112117477A - Assembly structure, electric pile array and battery system - Google Patents
Assembly structure, electric pile array and battery system Download PDFInfo
- Publication number
- CN112117477A CN112117477A CN201910539006.9A CN201910539006A CN112117477A CN 112117477 A CN112117477 A CN 112117477A CN 201910539006 A CN201910539006 A CN 201910539006A CN 112117477 A CN112117477 A CN 112117477A
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- Prior art keywords
- pressing
- cell stack
- pressing mechanism
- cell
- assembly structure
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/24—Grouping of fuel cells, e.g. stacking of fuel cells
- H01M8/241—Grouping of fuel cells, e.g. stacking of fuel cells with solid or matrix-supported electrolytes
- H01M8/2425—High-temperature cells with solid electrolytes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/24—Grouping of fuel cells, e.g. stacking of fuel cells
- H01M8/2465—Details of groupings of fuel cells
- H01M8/247—Arrangements for tightening a stack, for accommodation of a stack in a tank or for assembling different tanks
- H01M8/2475—Enclosures, casings or containers of fuel cell stacks
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/24—Grouping of fuel cells, e.g. stacking of fuel cells
- H01M8/2465—Details of groupings of fuel cells
- H01M8/247—Arrangements for tightening a stack, for accommodation of a stack in a tank or for assembling different tanks
- H01M8/248—Means for compression of the fuel cell stacks
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The invention discloses an assembly structure, a galvanic pile array and a battery system, wherein the assembly structure comprises a box body (1), a pressure head (2) and a pressing mechanism, wherein a battery pile (S) and the pressing mechanism are respectively arranged in a first area and a second area which are mutually thermally isolated; the case (1) has a chamber for accommodating the cell stack (S) and serving as the first region; one end of the pressure head (2) extends into the cavity and abuts against the cell stack (S), and the other end of the pressure head is connected with the pressing mechanism; the pressing mechanism is configured to drive the pressing head (2) to press the cell stack (S). The assembling structure has the advantages of simple structure, light overall weight, low manufacturing cost and stable and reliable pressing force.
Description
Technical Field
The invention relates to the technical field of batteries, in particular to an assembly structure, a pile array and a battery system.
Background
For a cell system (e.g., a solid oxide fuel cell system), the core component is a cell stack, the cell stack is formed by stacking a plurality of solid oxide fuel cell plates, and the sealing between the cell plates needs to be realized by a stable pressing force. When the cell stack normally works, the temperature of the system reaches 700-800 ℃, thermal expansion is generated at the moment, and stable pressing force needs to be provided to keep the sealing between the cell sheets; the stack cools and contracts when it is out of service, and the clamping force also needs to be controlled to maintain the seal between the cells.
Currently, the existing cell stack assembly technology has the following problems: firstly, the whole structure is complex, and the assembly and implementation have certain difficulty; secondly, various components for assembling the cell stack all need to adopt high temperature resistant materials, and the manufacturing cost is high. Therefore, an assembly structure which is simple in structure, low in manufacturing cost and capable of ensuring stable pressing force of the cell stack needs to be designed.
Disclosure of Invention
The invention aims to overcome the problems in the prior art and provide an assembly structure, a stack array and a battery system, wherein the assembly structure has the advantages of simple structure, light overall weight, low manufacturing cost and stable and reliable pressing force.
In order to achieve the above object, an aspect of the present invention provides an assembly structure for assembly of a cell stack, the assembly structure including a case, a ram, and a pressing mechanism, the cell stack and the pressing mechanism being respectively provided in a first region and a second region that are thermally isolated from each other; the case has a chamber for accommodating the cell stack and serving as the first region; one end of the pressure head extends into the cavity and abuts against the cell stack, and the other end of the pressure head is connected with the pressing mechanism; the pressing mechanism is configured to drive the ram to press the stack.
Optionally, the chamber is configured to isolate heat transfer from the second region.
Optionally, the pressing mechanism includes an elastic member, one end of the elastic member is fixedly disposed, and the other end of the elastic member is connected with the pressure head to drive the pressure head to press the cell stack.
Optionally, the assembling structure includes a plurality of the pressing heads respectively abutting against a plurality of the cell stacks in the chamber one by one.
Optionally, the pressing mechanism includes a pressing plate connected to the other end of the elastic member, and the pressing plate is configured to drive the plurality of pressing heads to press the plurality of cell stacks under the driving of the elastic member.
Optionally, a plurality of the cell stacks are arranged at intervals along a first direction, and the pressing mechanism includes a plurality of the elastic members arranged at two ends of the pressing plate along the first direction.
Optionally, the pressing mechanism includes a plurality of vertical rods spaced and fixedly disposed along the first direction, and one end of each of the plurality of elastic members is respectively and fixedly disposed on the plurality of vertical rods.
Optionally, the assembling structure includes a base, and the box body and the upright are fixedly disposed on the base; and/or the elastic part is a constant force spring.
Optionally, the mounting structure comprises a mounting for providing support to the cell stack, the mounting being disposed in the chamber.
The invention provides a galvanic pile array, which comprises a cell pile and the assembly structure, wherein the cell pile is arranged in a cavity of a box body of the assembly structure.
A third aspect of the invention provides a battery system comprising a stack array as described above.
Through the technical scheme, the cavity of the box body is used for accommodating the cell stack, the cell stack is placed into the cavity, then the pressing head is driven by the pressing mechanism to extrude the cell stack, and the cell stack is kept in tightness. When the cell stack works, heat is generated, the temperature can reach 700-800 ℃, therefore, the temperature in the cavity of the box body can reach the high temperature, however, the pressing mechanism is arranged in the second area, and the cavity and the second area are mutually insulated, namely, the pressing mechanism does not work at the high temperature of 700-800 ℃, so that the pressing mechanism does not need to adopt high-temperature resistant materials, and the manufacturing cost is reduced on the premise of ensuring the stable pressing force.
Drawings
Fig. 1 is a schematic structural view of one embodiment of a battery system of the present invention.
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.
As shown in fig. 1, the assembly structure for assembling a cell stack S of the present invention includes a case 1, a ram 2, and a pressing mechanism, the cell stack S and the pressing mechanism being respectively provided in a first region and a second region that are thermally isolated from each other; the case 1 has a chamber for accommodating the cell stack S and serving as a first region; one end of the pressure head 2 extends into the cavity to be abutted against the cell stack S, and the other end of the pressure head is connected with the pressing mechanism; the pressing mechanism is configured to drive the pressing head 2 to press the cell stack S.
Through the technical scheme, the cavity of the box body 1 is used for accommodating the cell stack S, the cell stack S is placed into the cavity and then the pressing head 2 is driven by the pressing mechanism to extrude the cell stack S, and the cell stack S is enabled to keep tightness. When the cell stack S works, heat can be generated, the temperature can reach 700-800 ℃, and therefore, the temperature in the cavity of the box body 1 can reach the high temperature, but the pressing mechanism is arranged in the second area, and the cavity and the second area are mutually insulated, namely, the pressing mechanism can not work at the high temperature of 700-800 ℃, so that the pressing mechanism does not need to adopt high-temperature-resistant materials, and the manufacturing cost is reduced on the premise of ensuring the stable pressing force.
In the present invention, the temperature of the first region can be set to a higher temperature by the operating state of the stack S, but in any case, since the second region and the first region are in a heat insulating state, in the case where the pressing mechanism does not use any high-temperature resistant material (generally, a high-temperature resistant material is more expensive than a general material), the second region is maintained at a temperature suitable for the operation of the pressing mechanism, such as normal temperature, so that the manufacturing cost can be reduced while the pressing force is kept stable.
It should be understood that the above-mentioned "first region and second region are thermally isolated from each other" means that: the first zone and the second zone can be kept at relatively independent temperatures respectively, and the keeping manner can be various, for example, the temperatures of the first zone and the second zone can be respectively regulated by temperature regulating equipment, and when the first zone is in a high-temperature state, the second zone is kept in a normal-temperature state by refrigerating equipment. In one embodiment of the invention, in order to further reduce manufacturing costs (temperature regulating devices are generally expensive), the chamber is optionally configured to isolate heat transfer from the second region. That is, the chamber portion of the box 1 may be made of a heat insulating material, and the chamber and the second area are designed to be sealed as much as possible, so as to ensure that the chamber can be insulated from heat transfer with the second area.
The pressing mechanism may drive the pressing head 2 to press the cell stack S in various ways, for example, the pressing mechanism may include an oil cylinder, and the oil cylinder pushes the pressing head 2 to press the cell stack S. In order to simplify the overall structure of the apparatus, in one embodiment of the present invention, the pressing mechanism may include an elastic member 3, one end of the elastic member 3 is fixedly disposed, and the other end is connected to the pressing head 2 to drive the pressing head 2 to press the cell stack S.
When the stack S is operated, heat is generated, and once the stack S is heated, expansion and contraction of heat inevitably occur, that is, when the stack S is heated, the overall height of the stack S is increased, and when the stack S is not heated, the overall height of the stack S is restored to a normal state. Therefore, in such a state that the height of the cell stack S is constantly changed, the elastic member 3 needs to be provided as a constant force spring to ensure that the sealability of the cell stack S is constantly maintained. The constant force spring may be constructed in the prior art and will not be described herein.
Generally, a plurality of cell stacks S may be installed in the chamber of the case 1, and the cell stacks S may be simultaneously pressed by a pressing head 2 having a large area. However, this method has a problem in that when the indenter 2 is inclined or the normal heights of the respective cell stacks S are different, it is difficult to ensure that each of the cell stacks S is pressed to a state where the sealability is maintained by using one indenter 2, and in order to solve this problem, the assembly structure may alternatively include a plurality of indenters 2 abutting against a plurality of cell stacks S in the chamber one by one. With this arrangement, even in the case where the heights of some of the cell stacks S are not uniform, by setting the indenter 2 to have different heights, it is possible to ensure that each of the cell stacks S is pressed to a state where the sealability can be maintained.
It should be understood that the pressing mechanism may adopt a manner that one pressing head 2 corresponds to one elastic member 3, or one pressing head 2 corresponds to one oil cylinder, and in an embodiment of the present invention, in order to further simplify the structure of the apparatus and reduce the cost, optionally, the pressing mechanism includes a pressing plate 4 connected to the other end of the elastic member 3, and the pressing plate 4 is configured to drive the plurality of pressing heads 2 to press the plurality of cell stacks S under the driving of the elastic member 3. In other words, the pressing plate 4 and the elastic piece 3 can drive the plurality of pressing heads 2 to work simultaneously, so that the equipment structure is greatly simplified, and the manufacturing cost is reduced.
When a plurality of cell stacks S are arranged in the chamber at intervals, no matter what shape and distribution of the cell stacks S are, they always extend along a certain direction (i.e. the first direction), if the pressing mechanism adopts one elastic member 3 to drive the pressing plate 4, then the problem that the part of the pressing plate 4 far away from the elastic member 3 may have different acting force on the pressing head 2 may occur, therefore, in order to solve this problem, optionally, the pressing mechanism includes a plurality of elastic members 3 arranged at both ends of the pressing plate 4 along the first direction, taking fig. 1 as an example, a plurality of cell stacks S may also be arranged along the direction perpendicular to the paper in the figure, in this case, in order to ensure that the pressing plate 4 can provide uniform pressure to all the cell stacks S, the elastic members 3 are also arranged along the direction perpendicular to the paper, the number of the elastic members 3 may be determined according to the number, thickness and other factors of the cell stacks S, for example, when the pressing plates 4 in the top view 1 are rectangular, the elastic members 3 may be four and disposed at four corners of the rectangular pressing plates 4, respectively, and when the cell stacks S in the top view 1 are arranged in a triangle, the elastic members 3 may be three and disposed at three points of the pressing plates 4 corresponding to three corners of the triangular cell stacks S, respectively, and thus, the number of the elastic members 3 is not limited by the present invention.
In order to facilitate the installation of the elastic member 3, optionally, the pressing mechanism includes a plurality of vertical rods 5 spaced and fixedly disposed along the first direction, and one end of each of the plurality of elastic members 3 is fixedly disposed on each of the plurality of vertical rods 5. For example, as shown in fig. 1, four uprights 5 (two of which 5 are hidden from view by the other two uprights 5 since fig. 1 is a front view) are provided on both sides of the cabinet 1, and by providing four elastic members 3, each elastic member 3 is provided on one upright 5, just at both ends of the pressure plate 4. In the present invention, the number of the upright bars 5 may be one-to-one corresponding to the number of the elastic members 3, or may not be set corresponding to the number of the elastic members 3. In an embodiment that is not provided corresponding to the number of the elastic members 3, the upright 5 may be composed of a first portion provided to extend in the thickness direction of the cell stack S and a second portion perpendicular to the first portion, and taking fig. 1 as an example, a plurality of cell stacks S may be further provided in the drawing in the direction perpendicular to the paper surface, and in order to simultaneously provide pressing force to these plurality of cell stacks S, the shape of the pressing plate 4 in the top view direction in fig. 1 may be provided as a rectangle, so that the number of the elastic members 3 may be four and the four elastic members 3 are respectively provided at four corners of the rectangular pressing plate 4, in which case, support may be provided to the elastic members 3 by providing only two uprights 5: two second portions of the two vertical rods 5 are located above the pressing plate 4 and extend through four corners of the pressing plate 4, and four elastic members 3 are respectively arranged on the two second portions and correspond to the four corners of the pressing plate 4, so as to provide stable pressure to the pressing plate 4.
Sometimes it may be necessary to provide a certain distance between the uprights 5 and the cabinet 1, in which case it is possible to consider lengthening and widening the pressure plate 4, so that the elastic elements 3 on the uprights 5 can be connected to the pressure plate 4. In one embodiment of the invention, the elastic element 3 can also be connected to the pressure plate 4 using a force transmission frame 8.
In order to keep the box body 1 and the upright 5 stable, optionally, the assembly structure comprises a base 6, and the box body 1 and the upright 5 are fixedly arranged on the base 6;
in order to keep the stack S stable in the chamber, the mounting structure optionally comprises a mounting 7 for providing support to the stack S, the mounting 7 being disposed in the chamber.
In the above embodiment, since the indenter 2 and the mounting seat 7 are both at least partially disposed in the chamber which will be in a high temperature state when the cell stack S is operated, the indenter 2 may be a ceramic indenter having high temperature resistance, and the mounting seat 7 may be a stainless steel structure.
The invention also provides a galvanic pile array which comprises the cell pile S and the assembly structure, wherein the cell pile S is arranged in the cavity of the box body 1 of the assembly structure. The invention does not limit the arrangement form of the cell stack S in the cavity, i.e. the cell stack S can be arranged in the cavity in various forms such as circular, annular, rectangular, triangular, etc., and the specific matching way of the cell stack S and the assembly structure can adopt the various embodiments described above, which is not described herein again. Because the electric pile array adopts the assembly structure, the pressing force of the battery pile S can be ensured to be constant, and the electric pile array has the advantages of simple structure, light overall weight and low manufacturing cost.
The invention also provides a battery system which comprises the electric pile array. The battery system adopts the electric pile array, so the battery system also has the advantages of simple structure, light overall weight and low manufacturing cost.
The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto. Within the scope of the technical idea of the invention, many simple modifications may be made to the technical solution of the invention, and in order to avoid unnecessary repetition, various possible combinations of the invention will not be described further. Such simple modifications and combinations should be considered within the scope of the present disclosure as well.
Claims (10)
1. An assembly structure for the assembly of a cell stack (S), characterized in that it comprises a box (1), a press head (2) and a pressing mechanism, said cell stack (S) and said pressing mechanism being arranged in a first and a second zone, respectively, thermally isolated from each other;
the case (1) has a chamber for accommodating the cell stack (S) and serving as the first region;
one end of the pressure head (2) extends into the cavity and abuts against the cell stack (S), and the other end of the pressure head is connected with the pressing mechanism;
the pressing mechanism is configured to drive the pressing head (2) to press the cell stack (S).
2. The fitting structure according to claim 1, wherein the chamber is configured to be able to insulate heat transfer with the second region.
3. The arrangement, as set forth in claim 1 or 2, characterized in that the hold-down mechanism comprises an elastic member (3), one end of which (3) is fixedly arranged and the other end is connected with the pressing head (2) to force the pressing head (2) to press the cell stack (S).
4. The fitting structure according to claim 3, characterized in that it comprises a plurality of said pressing heads (2) which abut one by one with a plurality of said cell stacks (S) in said chamber, respectively.
5. The arrangement, as set forth in claim 4, characterized in that the hold-down mechanism comprises a pressure plate (4) connected to the other end of the elastic element (3), the pressure plate (4) being configured to be able to bring a plurality of pressure heads (2) to press a plurality of cell stacks (S) under the actuation of the elastic element (3).
6. The fitting structure according to claim 5, wherein a plurality of the cell stacks (S) are arranged at intervals in a first direction, and the pressing mechanism includes a plurality of the elastic members (3) arranged at both ends of the pressing plate (4) in the first direction.
7. The arrangement, as set forth in claim 6, characterized in that the hold-down mechanism comprises a plurality of uprights (5) spaced and fixedly arranged along the first direction, one end of each of the plurality of elastic members (3) being fixedly arranged on one of the plurality of uprights (5).
8. The fitting structure according to claim 7, characterised in that it comprises a base (6), on which base (6) said tank (1) and said uprights (5) are fixedly arranged; and/or the elastic part (3) is a constant force spring.
9. An electric stack array, characterized in that it comprises a cell stack (S) and an assembly structure according to any one of claims 1 to 8, said cell stack (S) being arranged in a cavity of a tank (1) of said assembly structure.
10. A battery system comprising the stack array of claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910539006.9A CN112117477A (en) | 2019-06-20 | 2019-06-20 | Assembly structure, electric pile array and battery system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910539006.9A CN112117477A (en) | 2019-06-20 | 2019-06-20 | Assembly structure, electric pile array and battery system |
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| Publication Number | Publication Date |
|---|---|
| CN112117477A true CN112117477A (en) | 2020-12-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910539006.9A Pending CN112117477A (en) | 2019-06-20 | 2019-06-20 | Assembly structure, electric pile array and battery system |
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| CN (1) | CN112117477A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1597786A2 (en) * | 2003-02-27 | 2005-11-23 | Forschungszentrum Jülich Gmbh | Production of a high-temperature fuel cell stack |
| CN101053107A (en) * | 2004-08-02 | 2007-10-10 | 施泰克赛拉有限责任公司 | Fuel cell stack with clamping device |
| CN101601159A (en) * | 2006-12-21 | 2009-12-09 | 艾奈德有限公司 | The heat-proof device and the hold down gag that are used for the high-temperature fuel cell system assembly |
| CN101601160A (en) * | 2006-12-21 | 2009-12-09 | 艾奈德有限公司 | Be used to hold and compress the shell of at least one fuel cell pack |
| CN103311560A (en) * | 2012-03-16 | 2013-09-18 | 中国科学院宁波材料技术与工程研究所 | Solid oxide fuel cell power generating system and cell stack thereof |
| JP2016062852A (en) * | 2014-09-22 | 2016-04-25 | 本田技研工業株式会社 | Assembling method of fuel cell stack |
| CN106627199A (en) * | 2016-11-02 | 2017-05-10 | 上海钧希新能源科技有限公司 | Fixing structure for vehicle-mounted level fuel battery control panel |
-
2019
- 2019-06-20 CN CN201910539006.9A patent/CN112117477A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1597786A2 (en) * | 2003-02-27 | 2005-11-23 | Forschungszentrum Jülich Gmbh | Production of a high-temperature fuel cell stack |
| CN101053107A (en) * | 2004-08-02 | 2007-10-10 | 施泰克赛拉有限责任公司 | Fuel cell stack with clamping device |
| CN101601159A (en) * | 2006-12-21 | 2009-12-09 | 艾奈德有限公司 | The heat-proof device and the hold down gag that are used for the high-temperature fuel cell system assembly |
| CN101601160A (en) * | 2006-12-21 | 2009-12-09 | 艾奈德有限公司 | Be used to hold and compress the shell of at least one fuel cell pack |
| CN103311560A (en) * | 2012-03-16 | 2013-09-18 | 中国科学院宁波材料技术与工程研究所 | Solid oxide fuel cell power generating system and cell stack thereof |
| JP2016062852A (en) * | 2014-09-22 | 2016-04-25 | 本田技研工業株式会社 | Assembling method of fuel cell stack |
| CN106627199A (en) * | 2016-11-02 | 2017-05-10 | 上海钧希新能源科技有限公司 | Fixing structure for vehicle-mounted level fuel battery control panel |
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Application publication date: 20201222 |