CN221057460U - Pressure sintering device of bipolar polar plate of nickel-hydrogen battery - Google Patents
Pressure sintering device of bipolar polar plate of nickel-hydrogen battery Download PDFInfo
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- CN221057460U CN221057460U CN202322987738.9U CN202322987738U CN221057460U CN 221057460 U CN221057460 U CN 221057460U CN 202322987738 U CN202322987738 U CN 202322987738U CN 221057460 U CN221057460 U CN 221057460U
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- pressure sintering
- cooling
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- 238000005245 sintering Methods 0.000 title claims abstract description 25
- 239000001257 hydrogen Substances 0.000 title claims abstract description 24
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 24
- 238000010438 heat treatment Methods 0.000 claims abstract description 53
- 238000001816 cooling Methods 0.000 claims abstract description 34
- 238000003825 pressing Methods 0.000 claims description 8
- 238000012546 transfer Methods 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 3
- 229910052987 metal hydride Inorganic materials 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 239000007773 negative electrode material Substances 0.000 abstract description 6
- 239000007774 positive electrode material Substances 0.000 abstract description 6
- 239000000758 substrate Substances 0.000 abstract description 6
- 238000010924 continuous production Methods 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 239000011261 inert gas Substances 0.000 description 3
- 239000011149 active material Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000001351 cycling effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
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- Battery Electrode And Active Subsutance (AREA)
Abstract
The utility model discloses a pressure sintering device of a bipolar plate of a nickel-hydrogen battery, which comprises a rotary table and vacuum furnaces arranged on the rotary table, wherein the number of the vacuum furnaces is at least one; the region where the rotary table is located is sequentially divided into a middle rotating region, a heating region and a cooling region, and the vacuum furnace is sequentially moved to the middle rotating region, the heating region and the cooling region through rotation of the rotary platform; the equipment adopted by the utility model is common equipment, the cost is lower, the repeated transportation in the production process is avoided, the pressure sintering and the cooling protection can be simultaneously carried out, the continuous production is convenient, and the production efficiency is greatly improved. The bipolar plate is subjected to pressure sintering by the pressure sintering device, so that the binding force between the positive and negative active material layers and the conductive substrate is improved, the energy density of the nickel-hydrogen battery is improved, and the manufactured nickel-hydrogen battery has good high-current charge-discharge characteristics and excellent cycle performance.
Description
Technical Field
The utility model belongs to the field of nickel-hydrogen batteries, and particularly relates to a pressure sintering device of a bipolar plate of a nickel-hydrogen battery.
Background
The bipolar plate of the nickel-hydrogen battery includes: a conductive substrate; a positive electrode active material layer coated on one surface of the conductive substrate; and a negative electrode active material layer coated on the other surface of the conductive substrate. The positive electrode active material layer contains Ni (OH) 2 as a positive electrode active material; in addition, a hydrogen storage alloy as a negative electrode active material is contained in the negative electrode active material layer.
The existing coating process is a wet processing process and a dry processing process, and the bipolar electrode processed by the processes is not easy to improve the discharge current of the manufactured nickel-metal hydride battery, has poor high-current discharge characteristic, and the surface active material is easy to fall off, so that the service life of the nickel-metal hydride battery is influenced.
For example, patent CN 200710194192.4 discloses a manufacturing method of a negative plate of a nickel-hydrogen battery, the special vacuum furnace designed by the patent has a double furnace chamber and a double heat-preserving structure, the solid temperature rise and the solid temperature drop are fast (A, B furnace chamber is alternatively heated and cooled), the capacitance of the negative plate after vacuum sintering is high, the service life of the assembled battery is long, and the overcharge and overdischarge resistance is strong; the negative plate has the characteristics of good strength, good flexibility and high qualification rate. However, the patent only deals with the negative plate, only adopts the common sintering process, and the manufactured nickel-hydrogen battery has poor high-current discharge performance, and the active material on the surface layer of the positive electrode is easy to fall off.
Disclosure of utility model
The utility model aims to provide a pressure sintering device of a bipolar plate of a nickel-hydrogen battery, which aims to solve the problems in the background technology.
The technical scheme of the utility model is as follows:
The utility model also provides a pressure sintering device of the bipolar plate of the nickel-hydrogen battery, which comprises a rotary table and at least one vacuum furnace arranged on the rotary table;
The region where the rotary table is located is sequentially divided into a middle rotating region, a heating region and a cooling region, and the vacuum furnace is sequentially moved to the middle rotating region, the heating region and the cooling region through rotation of the rotary platform;
A heating device is arranged around the heating area and used for heating the vacuum furnace of the heating area;
a pressurizing mechanism is arranged in the vacuum furnace and is used for pressurizing the bipolar plate;
And a fan is arranged below the cooling area and used for cooling the vacuum furnace of the cooling area.
Preferably, the number of the vacuum furnaces is three; the three vacuum furnaces are respectively positioned in the transfer zone, the heating zone and the cooling zone, so that the bipolar plate can be continuously produced, and the production efficiency can be improved.
In a preferred scheme, a water-cooling jacket is arranged in a shell of the vacuum furnace; when the vacuum furnace needs to be cooled, the fan is started, cooling water is introduced into the water cooling jacket, and the cooling efficiency is high.
In a preferred scheme, the vacuum furnace is provided with a vacuumizing mechanism and an inert atmosphere mechanism, the vacuumizing mechanism is used for vacuumizing the vacuum furnace, and the inert atmosphere mechanism is used for filling/pumping inert gas into/out of the vacuum furnace.
Preferably, the pressurizing mechanism comprises an upper pressing block and a lower pressing block; for applying pressure to the bipolar plate.
Preferably, the heating device is U-shaped, and the opening faces to the center of the rotary table.
More preferably, the heating device is arranged around the heating region vacuum furnace, an infrared heating plate is arranged in the heating device, and the outer surface of the infrared heating plate is wrapped with a high-temperature resistant material.
The beneficial technical effects of the utility model are as follows:
The utility model provides a pressure sintering device of a bipolar polar plate of a nickel-hydrogen battery, which comprises a rotary table and a vacuum furnace arranged on the rotary table; the region where the rotary table is located is sequentially divided into a middle rotating region, a heating region and a cooling region, and the vacuum furnace is sequentially moved to the middle rotating region, the heating region and the cooling region through rotation of the rotary platform; the equipment adopted by the utility model is common equipment, the cost is lower, the repeated transportation in the production process is avoided, the pressure sintering and the cooling protection can be simultaneously carried out, the continuous production is convenient, and the production efficiency is greatly improved.
According to the utility model, the bipolar polar plate is subjected to pressure sintering by the pressure sintering device, so that the binding force between the positive and negative active material layers and the conductive substrate is improved, the energy density of the nickel-hydrogen battery is improved, and the manufactured nickel-hydrogen battery has good high-current charge-discharge characteristics and excellent cycle performance.
Drawings
For a clearer description of the technical solution of the implementation of the present utility model, the following figures are briefly described. The following description of the drawings is merely exemplary of some embodiments of the present utility model and may be practiced by those skilled in the art without undue burden, in light of the drawings and the actual manufacturing considerations.
FIG. 1 is a device connection diagram of the present utility model;
FIG. 2 is a regional division diagram of a turntable;
FIG. 3 is a schematic diagram of the operation of the vacuum furnace;
Description of the reference numerals: 1-rotating table, 2-vacuum furnace, 3-heating device, 301-infrared heating plate, 302-high temperature resistant layer, 4-pressurizing mechanism, 401-upper briquetting, 402-lower briquetting, 5-fan, 6-water cooling jacket, 7-conductive substrate, 8-positive electrode active material and 9-negative electrode active material.
Detailed Description
The utility model will be described in further detail with reference to the accompanying drawings and specific examples:
It should be noted that, unless specifically stated otherwise, all references to "upper", "lower", "left", "right", "front" and "rear" describing an orientation herein do not refer to the orientation, but merely for convenience of description, the product may be placed in different directions and descriptions thereof may be different. Those skilled in the art can understand the direction without making any creative effort, and all directions are within the protection scope of the present utility model.
Example 1
The pressure sintering device of the bipolar polar plate of the nickel-hydrogen battery comprises a rotary table 1 and a vacuum furnace 2 arranged on the rotary table as shown in figures 1-3;
The region where the rotary table 1 is positioned is sequentially divided into a transfer region, a heating region and a cooling region, and the vacuum furnace 2 is sequentially moved to the transfer region, the heating region and the cooling region through the rotation of the rotary table;
a heating device 3 is arranged around the heating area and is used for heating the vacuum furnace of the heating area;
a pressurizing mechanism 4 is arranged in the vacuum furnace and is used for pressurizing the bipolar plate;
A fan 5 is arranged below the cooling zone and is used for cooling the vacuum furnace of the cooling zone.
Specifically, the number of the vacuum furnaces 2 is three, and the three vacuum furnaces are respectively positioned in the transfer zone, the heating zone and the cooling zone.
Specifically, a water cooling jacket 6 is arranged in the shell of the vacuum furnace, and a fan 5 and the water cooling jacket 6 are connected with a temperature control module.
Specifically, the vacuum furnace is provided with a vacuumizing mechanism and an inert atmosphere mechanism, the vacuumizing mechanism and the inert atmosphere mechanism are connected with the atmosphere control module, the vacuumizing mechanism is used for vacuumizing the vacuum furnace, and the inert atmosphere mechanism is used for filling/pumping inert gas into/out of the vacuum furnace.
Specifically, the pressurizing mechanism comprises an upper pressing block 401 and a lower pressing block 402, and is connected with the pressure control module and used for applying certain pressure to the bipolar plate.
Specifically, the heating device 3 is in a U shape, and the opening faces the center of the rotary table 1; the heating device 3 is arranged around the heating zone vacuum furnace, an infrared heating plate is arranged in the heating device 3, and the outer surface of the infrared heating plate is wrapped with a high-temperature resistant material.
In the present utility model, the heating device 3 may be a resistance wire heating or an electromagnetic induction heating.
The working process of the device comprises the following steps:
(a) Placing the bipolar plate obtained after cutting into a vacuum furnace 2 of a transfer area, vacuumizing through a vacuumizing mechanism, enabling the vacuum furnace 2 of the transfer area to rotate to a heating area along with a rotary table 1, applying pressure to the bipolar plate through a pressurizing mechanism 4, heating by a heating device 3, and performing pressure sintering on the bipolar plate;
(b) After the pressure sintering is finished, the vacuum furnace 2 of the heating area rotates to a cooling area, the pressurizing mechanism 4 stops pressurizing, inert gas is filled into the heating area through the inert atmosphere mechanism for cooling protection, and the polar plate is taken out after cooling, so that the bipolar polar plate of the nickel-hydrogen battery is obtained;
(c) Cycling steps (a) - (b).
The above description is merely a preferred embodiment of the present utility model, and the scope of the present utility model is not limited to the above examples. Modifications and variations which would be obvious to those skilled in the art without departing from the spirit of the utility model are also considered to be within the scope of the utility model.
Claims (7)
1. The pressure sintering device of the bipolar polar plate of the nickel-hydrogen battery is characterized by comprising a rotary table (1) and vacuum furnaces (2) arranged on the rotary table, wherein the number of the vacuum furnaces (2) is at least one;
The region where the rotary table (1) is located is sequentially divided into a middle rotating region, a heating region and a cooling region, and the vacuum furnace (2) is sequentially moved to the middle rotating region, the heating region and the cooling region through rotation of the rotary table;
A heating device (3) is arranged around the heating area and is used for heating the vacuum furnace of the heating area;
A pressurizing mechanism (4) is arranged in the vacuum furnace and is used for pressurizing the bipolar plate;
A fan (5) is arranged below the cooling zone and used for cooling the vacuum furnace of the cooling zone.
2. The pressure sintering device of the bipolar plate of the nickel-metal hydride battery according to claim 1, wherein the number of the vacuum furnaces (2) is three, and the three vacuum furnaces are respectively positioned in the transfer zone, the heating zone and the cooling zone.
3. The pressure sintering device of the bipolar plate of the nickel-hydrogen battery according to claim 1, wherein a water cooling jacket (6) is arranged in the shell of the vacuum furnace.
4. The pressure sintering device of the bipolar plate of the nickel-hydrogen battery according to claim 1, wherein the vacuum furnace is provided with a vacuumizing mechanism and an inert atmosphere mechanism.
5. The pressure sintering device of the bipolar plate of the nickel-hydrogen battery according to claim 1, wherein the pressurizing mechanism (4) comprises an upper pressing block (401) and a lower pressing block (402).
6. The pressure sintering device of bipolar plates of nickel-hydrogen batteries according to claim 1, characterized in that the heating device (3) is U-shaped with an opening towards the centre of the rotating table (1).
7. The pressure sintering device of the bipolar plate of the nickel-hydrogen battery according to claim 6, wherein the heating device (3) is arranged around a heating zone vacuum furnace, an infrared heating plate is arranged in the heating device (3), and the outer surface of the infrared heating plate is wrapped with a high-temperature-resistant material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322987738.9U CN221057460U (en) | 2023-11-07 | 2023-11-07 | Pressure sintering device of bipolar polar plate of nickel-hydrogen battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322987738.9U CN221057460U (en) | 2023-11-07 | 2023-11-07 | Pressure sintering device of bipolar polar plate of nickel-hydrogen battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221057460U true CN221057460U (en) | 2024-05-31 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322987738.9U Active CN221057460U (en) | 2023-11-07 | 2023-11-07 | Pressure sintering device of bipolar polar plate of nickel-hydrogen battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221057460U (en) |
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2023
- 2023-11-07 CN CN202322987738.9U patent/CN221057460U/en active Active
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