CN212085139U

CN212085139U - High-efficiency current collection module

Info

Publication number: CN212085139U
Application number: CN202020575041.4U
Authority: CN
Inventors: 彭文财; 左晨东
Original assignee: Suzhou Guolv New Material Technology Co ltd
Current assignee: Suzhou Guolv New Material Technology Co ltd
Priority date: 2020-04-17
Filing date: 2020-04-17
Publication date: 2020-12-04
Anticipated expiration: 2030-04-17

Abstract

The utility model discloses a high-efficiency current collection module, which comprises a battery tube, a vent tube and foam nickel blocks, wherein at least one anode conductive strip is printed on the outer surface of the vent tube, a plurality of foam nickel blocks are welded on each anode conductive strip at intervals, the anode conductive strip is covered with a protective layer in the exposed area at the periphery of the foam nickel block, and the vent tube is embedded into the battery tube and is in interference fit contact with the battery tube through the foam nickel block positioned on the outer surface of the vent tube; at least one cathode conductive bar is printed on the outer surface of the battery tube along the axial direction, a spiral cathode conductive wire is wound on the outer surface of the battery tube, and the cathode conductive bar is positioned between the spiral cathode conductive wire and the outer surface of the battery tube; the cathode conductive strip of the battery tube is electrically connected with the anode conductive strip of the vent pipe in the adjacent battery tube through a current collecting strip. The utility model discloses high-efficient current collection module enables the specific energy density of battery high, has also avoided the inside short circuit of battery, has improved the reliability of battery.

Description

High-efficiency current collection module

Technical Field

The utility model relates to a fuel cell field especially relates to a high-efficient current collection module.

Background

Solid Oxide Fuel Cells (SOFC) belong to the third generation of Fuel cells, and are all-Solid-state chemical power generation devices that directly convert chemical energy stored in Fuel and oxidant into electrical energy at medium and high temperatures with high efficiency and environmental friendliness.

The SOFC has high power density, no noise and zero pollution; when the SOFC works, only chemical reaction occurs, no mechanical motion structure exists, and the main emission is water; the modularized cell pack can be modularized, and a plurality of single cells can be assembled into the cell pack in series, parallel and the like to adapt to application requirements of different scenes; the available fuels are various and easy to obtain, and hydrogen, hydrocarbon (methane), methanol and the like can be directly used as fuels without using noble metals as catalysts; all solid-state structure, no pollutant leakage risk.

The current collection plays a very important role in aspects such as SOFC efficiency, and the prior art has the following solutions,

the patent of application No. 2013100472563 adopts a method of filling nickel blanket between the air inlet pipe and the anode supporting pipe to carry out anode current collection, and because the coverage area is large, the method greatly reduces the effective reaction area of the anode, so that the specific energy density of the battery is greatly reduced;

the patent of application No. 2005101014873 uses a cone-shaped battery tube, in which the cathode at the outer edge of the small open end of the battery tube is sealed with the anode at the inner edge of the large open end of another monomer by connecting and encapsulating materials, the conductivity of the battery cathode material is relatively poor, the high-temperature airtight difficulty of the connection port of the battery cathode and the anode is high, and the internal short circuit phenomenon of the battery is easily caused due to poor sealing;

the patent of application No. 2017107674600 discloses a method for anode current collection by grooving the cell tube, which destroys the cell tube surface structure, reduces the mechanical properties of the cell tube, and the hardness of the ceramic material is high, and grooving is difficult. How to overcome the above technical problems is the direction of efforts of those skilled in the art.

Disclosure of Invention

The utility model aims at providing a high-efficient current collection module, this high-efficient current collection module need not to carry out machining to the battery pipe, neither influences gas tightness and mechanical properties, and enables the specific energy density of battery high, has also avoided the inside short circuit of battery, has improved the reliability of battery.

In order to achieve the above purpose, the utility model adopts the technical scheme that: a high-efficiency current collection module comprises a battery tube, a vent tube and foam nickel blocks, wherein at least one anode conductive strip is printed on the outer surface of the vent tube, a plurality of foam nickel blocks are welded on each anode conductive strip at intervals, a protective layer covers the exposed area of the periphery of each foam nickel block of each anode conductive strip, and the vent tube is embedded into the battery tube and is in interference fit contact with the battery tube through the foam nickel blocks on the outer surface of the vent tube;

at least one cathode conductive bar is printed on the outer surface of the battery tube along the axial direction, a spiral cathode conductive wire is wound on the outer surface of the battery tube, and the cathode conductive bar is positioned between the spiral cathode conductive wire and the outer surface of the battery tube; the cathode conductive strip of the battery tube is electrically connected with the anode conductive strip of the vent pipe in the adjacent battery tube through a current collecting strip.

The further improved scheme in the technical scheme is as follows:

1. in the above scheme, the number of the anode conducting strips of the vent pipe is the root and the anode conducting strips are distributed at equal intervals along the circumferential direction of the vent pipe.

2. In the above scheme, one end of the current collecting belt is electrically connected with the cathode conductive strip region located at the top of the battery tube, and the other end of the current collecting belt is electrically connected with the anode conductive strip region located at the top of the vent tube 7.

3. In the above scheme, the thickness of the anode conducting strip is 30-500 μm.

4. In the scheme, the thickness of the protective layer is 20-500 mu m.

5. In the above scheme, the printing mode of the anode conducting strip, the protective layer and the cathode conducting strip is screen printing.

Because of above-mentioned technical scheme's application, compared with the prior art, the utility model have the following advantage:

the utility model discloses a fuel current collecting device, its breather pipe surface printing has at least one positive pole conducting strip, welds several foam nickel pieces on every positive pole conducting strip at intervals, and this positive pole conducting strip is located the peripheral region that exposes of foam nickel piece and covers a protective layer, the breather pipe imbeds in the battery pipe and contacts with the battery pipe interference fit through the foam nickel piece that is located its surface; at least one cathode conductive bar is printed on the outer surface of the battery tube along the axial direction, a spiral cathode conductive wire is wound on the outer surface of the battery tube, and the cathode conductive bar is positioned between the spiral cathode conductive wire and the outer surface of the battery tube; the cathode conducting strip of the battery tube is electrically connected with the anode conducting strip of the vent tube in the adjacent battery tube through a current collecting belt, the current collection does not need to destroy the vent tube and the battery tube, the air tightness and the mechanical property are not influenced, the contact area of the current collecting point and the battery is small, the vent tube does not need to be machined, the specific energy density of the battery is high, the internal short circuit of the battery is avoided, and the reliability of the battery is improved.

Drawings

Fig. 1 is a schematic structural view of the high-efficiency current collecting module of the present invention;

fig. 2 is a schematic structural exploded view of the high-efficiency current collecting module according to the present invention;

fig. 3 is a schematic diagram of the high-efficiency current collecting module according to the present invention.

In the above drawings: 1. a battery tube; 101. a cathode conductive strip; 2. a breather pipe; 21. an anode conductive strip; 211. a protective layer; 3. a foamed nickel block; 4. a helical cathode conductive wire; 5. a collector strip.

Detailed Description

In the description of this patent, it is noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, as they may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The meaning of the above terms in this patent may be specifically understood by those of ordinary skill in the art.

Example 1: a high-efficiency current collection module comprises a battery tube 1, a vent tube 2 and foam nickel blocks 3, wherein at least one anode conductive strip 21 is printed on the outer surface of the vent tube 2, a plurality of foam nickel blocks 3 are welded on each anode conductive strip 21 at intervals, a protective layer 211 covers the exposed area of the anode conductive strip 21 at the periphery of each foam nickel block 3, and the vent tube 2 is embedded in the battery tube 1 and is in interference fit contact with the battery tube 1 through the foam nickel blocks 3 positioned on the outer surface of the vent tube;

at least one cathode conductive strip 101 is axially printed on the outer surface of the battery tube 1, a spiral cathode conductive wire 4 is wound on the outer surface of the battery tube 1, and the cathode conductive strip 101 is positioned between the spiral cathode conductive wire 4 and the outer surface of the battery tube 1; the cathode conductive strip 101 of the cell tube 1 is electrically connected with the anode conductive strip 21 of the vent tube 2 in the adjacent cell tube 1 through a current collecting strip 5.

The number of the anode conductive strips 21 of the air pipe 2 is 4, and the anode conductive strips are distributed at equal intervals along the circumferential direction of the air pipe 2.

One end of the current collecting strip 5 is electrically connected with the region of the cathode conducting strip 101 at the top of the cell tube 1, and the other end of the current collecting strip 5 is electrically connected with the region of the anode conducting strip 21 at the top of the vent tube 2.

The protective layer 211 is made of glass, and the glass is glass ceramics.

The thickness of the anode conductive strip 21 is 120 μm, and the thickness of the protective layer 211 is 400 μm.

Example 2: a high-efficiency current collection module comprises a battery tube 1, a vent tube 2 and foam nickel blocks 3, wherein at least one anode conductive strip 21 is printed on the outer surface of the vent tube 2, a plurality of foam nickel blocks 3 are welded on each anode conductive strip 21 at intervals, a protective layer 211 covers the exposed area of the anode conductive strip 21 at the periphery of each foam nickel block 3, and the vent tube 2 is embedded in the battery tube 1 and is in interference fit contact with the battery tube 1 through the foam nickel blocks 3 positioned on the outer surface of the vent tube;

The thickness of the anode conductive strip 21 is 320 μm, and the thickness of the protective layer 211 is 90 μm.

The printing method of the anode conductive strip 21, the protective layer 211 and the cathode conductive strip 101 is screen printing.

The preparation method of the high-efficiency current collection module comprises the following steps:

s1, printing an air inlet pipe flow guide circuit: printing a conductive circuit on the air inlet pipe by using conductive paste;

s2, sintering the air pipe flow guide circuit: placing the printed gas inlet pipe of S1 into an electric furnace to sinter the conductive slurry to form a high-conductivity circuit;

s3 printed circuit protection layer: a layer of protective material is printed on the air inlet pipe circuit, and the welding position of the contact is reserved without printing, so that the protective material layer can prevent the conductive material from volatilizing during high-temperature work, and the service life of the circuit is prolonged;

s4, sintering the air pipe flow guide circuit: placing the printed gas inlet pipe of S3 into an electric furnace to sinter the protective layer material to form a high-conductivity circuit protective layer;

s5. welding contact: sequentially placing the foamed nickel blocks at the reserved positions of S3 to weld the contact and the air inlet pipe together;

s6, assembling the battery: the air inlet pipe obtained in S5 was inserted into the battery tube with an interference fit to make good contact.

By adopting the high-efficiency current collection module, the anode conductive strips are printed on the outer surface of the vent pipe, and a plurality of foamed nickel blocks are welded on each anode conductive strip at intervals, so that the vent pipe and the battery pipe are not required to be damaged in current collection, the air tightness and the mechanical property are not influenced, the contact area between the current collection point and the battery is small, the vent pipe is not required to be machined, the specific energy density of the battery is high, the internal short circuit of the battery is avoided, and the reliability of the battery is improved; and the anode conducting bar is covered with a protective layer in the area exposed at the periphery of the nickel foam block, and the vent pipe is embedded in the battery tube and is in interference fit contact with the battery tube through the nickel foam block positioned on the outer surface of the battery tube, so that the gasification and volatilization of circuit materials are reduced.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable people skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.

Claims

1. A high efficiency current collection module, characterized by: the battery comprises a battery tube (1), vent pipes (2) and foam nickel blocks (3), wherein at least one anode conductive strip (21) is printed on the outer surface of each vent pipe (2), a plurality of foam nickel blocks (3) are welded on each anode conductive strip (21) at intervals, a protective layer (211) covers the area, exposed at the periphery of each foam nickel block (3), of each anode conductive strip (21), and the vent pipes (2) are embedded into the battery tube (1) and are in interference fit contact with the battery tube (1) through the foam nickel blocks (3) on the outer surface of each vent pipe;

at least one cathode conductive strip (101) is axially printed on the outer surface of the battery tube (1), a spiral cathode conductive wire (4) is wound on the outer surface of the battery tube (1), and the cathode conductive strip (101) is positioned between the spiral cathode conductive wire (4) and the outer surface of the battery tube (1); the cathode conducting strip (101) of the battery tube (1) is electrically connected with the anode conducting strip (21) of the vent tube (2) in the adjacent battery tube (1) through a current collecting strip (5).

2. The high efficiency collector module according to claim 1, wherein: the number of the anode conducting strips (21) of the vent pipe (2) is 4, and the anode conducting strips are distributed at equal intervals along the circumferential direction of the vent pipe (2).

3. The high efficiency collector module according to claim 1, wherein: one end of the current collecting belt (5) is electrically connected with a cathode conductive strip (101) area positioned at the top of the battery tube (1), and the other end of the current collecting belt (5) is electrically connected with an anode conductive strip (21) area positioned at the top of the vent tube (2).

4. The high efficiency collector module according to claim 1, wherein: the thickness of the anode conducting strip (21) is 30-500 μm.

5. The high efficiency collector module according to claim 1, wherein: the thickness of the protective layer (211) is 20-500 mu m.

6. The high efficiency collector module according to claim 1, wherein: the printing mode of the anode conducting strip (21), the protective layer (211) and the cathode conducting strip (101) is screen printing.