CN111146487B - Electric power connection structure capable of self-adapting to deformation of fuel cell stack - Google Patents
Electric power connection structure capable of self-adapting to deformation of fuel cell stack Download PDFInfo
- Publication number
- CN111146487B CN111146487B CN201911405940.8A CN201911405940A CN111146487B CN 111146487 B CN111146487 B CN 111146487B CN 201911405940 A CN201911405940 A CN 201911405940A CN 111146487 B CN111146487 B CN 111146487B
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- China
- Prior art keywords
- cell stack
- copper bar
- core
- contact
- deformation
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- 239000000446 fuel Substances 0.000 title claims abstract description 15
- 229910052802 copper Inorganic materials 0.000 claims abstract description 53
- 239000010949 copper Substances 0.000 claims abstract description 53
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 51
- 230000006835 compression Effects 0.000 claims abstract description 3
- 238000007906 compression Methods 0.000 claims abstract description 3
- 210000001331 nose Anatomy 0.000 claims description 11
- 230000003044 adaptive effect Effects 0.000 claims 2
- 238000005452 bending Methods 0.000 claims 1
- 238000000034 method Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 3
- 230000002349 favourable effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 1
- 230000007717 exclusion Effects 0.000 description 1
Images
Classifications
-
- 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
-
- 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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- Fuel Cell (AREA)
- 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)
Abstract
The invention discloses an electric connection structure capable of adapting to deformation of a fuel cell stack, which comprises the cell stack, a contact core, a copper bar, a limiting block and a cable. Pins are arranged on two sides of the cell stack; the contact core is connected with the pins in a compression joint mode and can move on the pins relatively; the copper bars are arranged on two sides of the cell stack, the copper bars are in contact connection with the contact cores, and one ends of the copper bars extend and bend to the top surface of the cell stack; the limiting blocks are arranged on two sides of the battery stack and pressed on the copper bar, and are used for limiting the copper bar and the contact core from being separated from the pins; the cable is in contact connection with one end of the copper bar; wherein when the battery pile takes place the inflation deformation, the cable can pull the copper bar and touch the core to pressing close to the battery pile more. The power connection structure can naturally accommodate deformation of the fuel cell stack.
Description
Technical Field
The invention relates to the field of power connection design, in particular to a power connection structure design capable of adapting to the telescopic deformation of a battery stack.
Background
The common method of the power connection structure in the prior art is to directly connect the cable copper nose with the electrode pin of the battery stack in a bolt fixing mode, and although the method has simple structure and convenient connection, when the battery stack with double pins exists in a single pole, the power connection structure can output power by four cables. And under the battery pile generates heat and produces flexible deformation condition, there is the atress change in the bolt-up face, and the bolt is not hard up easily at this moment and leads to the safety problem. In addition, the copper nose connection mode is only suitable for the battery stack electrode pin to be a copper sheet type structure, and can not be adopted for a cylindrical pin structure.
Therefore, the method has the advantages of simple structure and convenient disassembly and assembly. The disadvantage is that the mounting method does not consider the effect of the telescopic deformation of the cell stack during the working process, and is not suitable for the case that the double cylindrical pins exist in the unipolar.
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.
Disclosure of Invention
The invention aims to provide an electric connection structure capable of adapting to deformation of a fuel cell stack, which can ensure that pins of the cell stack still keep good contact under the condition that the cell stack deforms.
In order to achieve the purpose, the invention provides an electric connection structure capable of self-adapting to deformation of a fuel cell stack. Pins are arranged on two sides of the cell stack; the contact core is connected with the pins in a compression joint mode and can move on the pins relatively; the copper bars are arranged on two sides of the cell stack, the copper bars are in contact connection with the contact cores, and one ends of the copper bars extend and bend to the top surface of the cell stack; the limiting blocks are arranged on two sides of the battery stack and pressed on the copper bar, and are used for limiting the copper bar and the contact core from being separated from the pins; the cable is in contact connection with one end of the copper bar; wherein when the battery pile takes place the inflation deformation, the cable can pull the copper bar and touch the core to pressing close to the battery pile more.
In a preferred embodiment, the contact core comprises a stud and a cylinder at two ends, and a screw part in the middle, the cylinder has a contact core hole for sleeving the pin, and the pin can slide in the contact core hole along the axial direction.
In a preferred embodiment, the copper bar comprises a mounting hole for fixing the copper bar on the stud of the contact core by means of a nut.
In a preferred embodiment, the high-voltage relay is arranged above the top surface of the cell stack, and the high-voltage relay is in contact connection with the other end of the cable.
In a preferred embodiment, the copper bar further includes a connection hole provided at one end of the copper bar extending and bent to the top surface of the cell stack.
In a preferred embodiment, the two ends of the cable are provided with copper noses, wherein the copper nose at one end is used for being connected and fixed with a connecting hole of a copper bar through a screw, and the copper nose at the other end is used for being connected and fixed with a high-voltage relay.
In a preferred embodiment, the stopper has fixing holes for fixing the stopper to both sides of the cell stack by screws.
Compared with the prior art, the electric connection structure capable of self-adapting to the deformation of the fuel cell stack can solve the problem of poor contact caused by stress change of the electric connection structure due to telescopic deformation in the working process of the fuel cell stack, and prolongs the service life of electricity. The problem of single pole have the electric power safety of two cylinder pin battery stacks effectively to connect is solved. Meanwhile, the power connection structure integrates a high-voltage relay, and can automatically perform on-off regulation and safety protection on a circuit.
Drawings
FIG. 1 is a schematic front view of a power connection structure according to an embodiment of the present invention;
FIG. 2 is a schematic top view of a power connection structure according to an embodiment of the present invention;
fig. 3 is a perspective view of a contact core of a power connection structure according to an embodiment of the present invention.
Description of the main reference numerals:
1-battery stack, 2-contact core, 21-stud, 22-screwing part, 23-cylinder, 24-contact core hole, 3-copper bar, 4-fixing hole, 5-limiting block, 6-contact core, 7-copper nose, 8-high voltage relay and 9-cable.
Detailed Description
The following detailed description of the present invention is provided in conjunction with the accompanying drawings, but it should be understood that the scope of the present invention is not limited to the specific embodiments.
Throughout the specification and claims, unless explicitly stated otherwise, the word "comprise", or variations such as "comprises" or "comprising", will be understood to imply the inclusion of a stated element or component but not the exclusion of any other element or component.
FIG. 1 is a schematic front view of a power connection structure according to an embodiment of the present invention; fig. 2 is a schematic top view of a power connection structure according to an embodiment of the present invention. As shown in fig. 1 to 2, an electric connection structure capable of adapting to deformation of a fuel cell stack according to a preferred embodiment of the present invention includes a cell stack 1, contact cores (2, 6), a copper bar 3, a stopper 5, a high voltage relay 8, and a cable 9.
As shown in fig. 1 and with reference to fig. 2, the contact cores (2, 6) are press-connected to the positive and negative leads of the stack 1, and the leads are slidable in the contact cores (2, 6). The two copper bars 3 are arranged on the left side and the right side of the cell stack 1, and two ends of each copper bar 3 are respectively connected with the two contact cores (2 and 6).
The cell stack 1 is fixed with a stopper 5. In some embodiments, the stopper 5 has fixing holes 4 for fixing the stopper 5 to both sides of the cell stack 1 by screws. Two stopper 5 are pressed on two copper bars 3, and stopper 5's effect prevents the removal of copper bar 3 to further prevent to touch core (2, 6) and receive the effect of external force and break away from the contact with the pin.
As shown in fig. 2, the copper bar 3 extends to the upper end of the cell stack 1 and is fixed with one end of the cable 9 through the copper nose 7. The other end of the cable 9 is connected with the high-voltage relay 8 through a copper nose. In the embodiment shown in fig. 2, two positive and negative high voltage relays 8 are disposed above the top surface of the cell stack 1, and two cables 9 are arranged between the two positive and negative high voltage relays 8 and the positive and negative copper bars 3 at intervals in a crossing manner, so that the cables 9 have sufficient lengths to be bent by corresponding angles.
Referring to fig. 3, in one embodiment, the contact core 2 includes a stud 21 and a cylinder 23 disposed opposite to each other, and a screw portion 22 disposed therebetween. The contact core 2 is screwed on the copper bar 3 through a stud 21 and is further fixed through a screwing part 22. The cylinder 23 has a core hole 24, the core hole 24 is configured to be sleeved on the pin, and the pin can slide in the core hole 24 along the axial direction.
The working principle of the electric power connection structure capable of adapting to the deformation of the fuel cell stack according to the embodiment of the invention is as follows:
when the battery stack 1 is out of work, the cable 9 is bent at the moment, and the cable 9 has certain elasticity, so that an axial thrust is used for pushing the copper bar 3 to the directions of the two sides far away from the battery stack 1. At this moment, the limiting block 5 limits the copper bar 3 to move towards the two sides of the battery stack 1, and the pins of the battery stack 1 are ensured to be continuously contacted with the contact cores (2 and 6). When the battery pile 1 during operation, the battery pile 1 takes place the inflation deformation, and cable 9 is flare-outed this moment, and copper bar 3 and touch core (2, 6) are pulled to battery pile 1 again, and the distance that leads to touching the core hole of core (2, 6) and embolia the pin is longer to make the area of contact increase of touching core (2, 6) and pin, more be favorable to the high-power heavy current output of the battery pile 1 during operation like this. In addition, the cable 9 passes through the two high-voltage relays 8 before being output externally, so that the power output condition can be monitored at any time, and the automatic on-off regulation is realized.
In summary, the power connection structure capable of adapting to the deformation of the fuel cell stack has the following advantages: the electric connection structure is not in full rigid connection, and the slight movement of the touch core and the pins can make the electric connection structure self-adapt to the problem of telescopic deformation in the working process of the fuel cell. Compare traditional cable connected mode, use the copper bar structure can effectively practice thrift galvanic pile both sides space. And the integrated high-voltage relay is favorable for protecting the safety of a circuit.
The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. It is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application to enable one skilled in the art to make and use various exemplary embodiments of the invention and various alternatives and modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the claims and their equivalents.
Claims (5)
1. An electrical connection structure that is adaptable to deformation of a fuel cell stack, comprising:
the battery stack is provided with pins on two sides;
the contact core is connected with the pin in a compression joint mode and can move relative to the pin;
the copper bar is arranged on two sides of the cell stack, is in contact connection with the contact core and comprises a connecting hole, and the connecting hole is arranged at one end, extending and bending to the top surface of the cell stack, of the copper bar;
the limiting block is pressed on the copper bar and used for limiting the movement of the copper bar; and
the copper noses are arranged at the two ends of the cable, and the copper nose at one end is used for being connected and fixed with the connecting hole of the copper bar through a screw;
wherein when the battery stack takes place the inflation deformation, the cable can pull the copper bar with touch the core and to more pressing close to the battery stack.
2. The deformable electrical connection of claim 1, wherein said core comprises a stud and a post at both ends and a screw in the middle, said post having a core hole for fitting over said pin, and said pin being axially slidable in said core hole.
3. The deformable electrical connection structure of claim 2, wherein said copper bar further comprises a mounting hole for securing said copper bar to said stud of said contact core by a nut.
4. The adaptive fuel cell stack deformation electrical connection structure of claim 1, further comprising a high voltage relay disposed above a top surface of the stack, the high voltage relay being fixed in contact with the copper nose of the other end of the cable.
5. The adaptive fuel cell stack deformation electrical connection structure of claim 1, wherein the stopper has fixing holes for fixing the stopper to both sides of the stack by screws.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911405940.8A CN111146487B (en) | 2019-12-31 | 2019-12-31 | Electric power connection structure capable of self-adapting to deformation of fuel cell stack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911405940.8A CN111146487B (en) | 2019-12-31 | 2019-12-31 | Electric power connection structure capable of self-adapting to deformation of fuel cell stack |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111146487A CN111146487A (en) | 2020-05-12 |
| CN111146487B true CN111146487B (en) | 2022-04-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911405940.8A Active CN111146487B (en) | 2019-12-31 | 2019-12-31 | Electric power connection structure capable of self-adapting to deformation of fuel cell stack |
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| Country | Link |
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| CN (1) | CN111146487B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103824992A (en) * | 2014-03-13 | 2014-05-28 | 苏州易美新思新能源科技有限公司 | Pectinate flexible connection structure for energy storage battery |
| CN104007299A (en) * | 2014-06-16 | 2014-08-27 | 国家电网公司 | T-type connection copper bar connecting device in low-voltage meter box matched with user |
| CN205542035U (en) * | 2016-01-15 | 2016-08-31 | 苏州科伦特电源科技有限公司 | Soft or hard combines generating line row |
| CN107658411A (en) * | 2016-07-26 | 2018-02-02 | 宁德时代新能源科技股份有限公司 | Output pole assembly and battery module |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8410747B2 (en) * | 2004-07-21 | 2013-04-02 | Societe Bic | Flexible fuel cell structures having external support |
-
2019
- 2019-12-31 CN CN201911405940.8A patent/CN111146487B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103824992A (en) * | 2014-03-13 | 2014-05-28 | 苏州易美新思新能源科技有限公司 | Pectinate flexible connection structure for energy storage battery |
| CN104007299A (en) * | 2014-06-16 | 2014-08-27 | 国家电网公司 | T-type connection copper bar connecting device in low-voltage meter box matched with user |
| CN205542035U (en) * | 2016-01-15 | 2016-08-31 | 苏州科伦特电源科技有限公司 | Soft or hard combines generating line row |
| CN107658411A (en) * | 2016-07-26 | 2018-02-02 | 宁德时代新能源科技股份有限公司 | Output pole assembly and battery module |
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| Publication number | Publication date |
|---|---|
| CN111146487A (en) | 2020-05-12 |
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Application publication date: 20200512 Assignee: Beijing Yuchai Xingshunda New Energy Technology Co.,Ltd. Assignor: Guangxi Yuchai Machinery Co.,Ltd. Contract record no.: X2024980002842 Denomination of invention: Electric connection structure with adaptive deformation of fuel cell stack Granted publication date: 20220422 License type: Common License Record date: 20240315 |