CN-114864986-B - Air-cooled aluminum metal bipolar plate

CN114864986BCN 114864986 BCN114864986 BCN 114864986BCN-114864986-B

Abstract

The invention relates to the field of fuel cells, in particular to an air-cooled aluminum metal bipolar plate. Including aluminium metal anode plate, aluminium metal negative plate and a plurality of bonding sealing gasket, be equipped with a plurality of first ditches of mutual intercommunication on the aluminium metal anode plate, be equipped with a plurality of first lugs in the first ditch inslot, be equipped with a plurality of second ditches of mutual intercommunication on the aluminium metal negative plate, be equipped with a plurality of second lugs in the second ditch inslot, the snakelike gas field that periodic distribution of first lug and second lug formed can change the air current flow direction effectively, is favorable to the discharge of reaction gas to gas diffusion in situ flow and formation water. At the same time, the cooling medium flows through the cooling medium channel formed by the first notch and the second notch to take away heat. The two-plate three-field type air-cooled aluminum metal bipolar plate structure improves the heat dissipation efficiency of the battery, so that the battery is expected to continuously and stably run under higher current density.

Inventors

YANG FENGYIN
Zhang Guoguan
ZHANG KEXUN
ZHAO YANG
LIU HUIZE
LIN DONGQING

Assignees

冠驰新能科技(南京)有限公司

Dates

Publication Date: 20260505
Application Date: 20220527

Claims (10)

1. An air-cooled aluminum metal bipolar plate is characterized by comprising an aluminum metal anode plate, an aluminum metal cathode plate and a plurality of bonding sealing gaskets; The aluminum anode plate is horizontally arranged along the left-right direction, the upper end surface of the aluminum anode plate is provided with a first groove which is arranged along the left-right direction and has an upward opening, a plurality of first ridges which are arranged along the left-right direction are arranged in the first groove, a plurality of first grooves which are arranged at intervals along the front-back direction and divide the first groove into a plurality of first grooves which are communicated with each other so as to circulate air, a plurality of first convex blocks which are arranged at intervals along the left-right direction are arranged in the first grooves, a plurality of first gaps which have downward openings are arranged on the lower end surface of the aluminum anode plate, and the first gaps are arranged on the lower side of the first convex blocks and correspond to each other one by one; the left side of the aluminum metal anode plate is provided with a first anode air inlet and a first cathode air outlet, the first anode air inlet is communicated with the first groove, and the right side of the aluminum metal anode plate is provided with a first anode air outlet and a first cathode air inlet; The aluminum metal cathode plate is horizontally arranged below the aluminum metal anode plate along the left-right direction, a second groove with a downward opening is arranged on the lower end face of the aluminum metal cathode plate, a plurality of second ridges are arranged in the second groove along the left-right direction, the plurality of second ridges are arranged at intervals along the front-back direction and divide the second groove into a plurality of second grooves which are communicated with each other so as to circulate air, a plurality of second convex blocks are arranged in the second grooves at intervals along the left-right direction, a plurality of second gaps with upward openings are arranged on the lower end face of the aluminum metal cathode plate, and the second gaps are arranged on the lower sides of the second convex blocks and correspond to each other one; The aluminum metal cathode plate is provided with a second cathode air outlet and a second anode air inlet at the left side, the second cathode air outlet is communicated with a second groove, the right side of the aluminum metal cathode plate is provided with a second cathode air inlet and a second anode air outlet, the second cathode air inlet is communicated with the second groove, and the first anode air inlet and the second anode air inlet are vertically corresponding, the first anode air outlet and the second anode air outlet are vertically corresponding, the first cathode air inlet and the second cathode air inlet are vertically corresponding, and the first cathode air outlet and the second cathode air outlet are vertically corresponding; the plurality of bonding gaskets are arranged between the aluminum anode plate and the aluminum cathode plate and are used for enabling the first anode air inlet to be communicated with the second anode air inlet in a sealing mode, enabling the first anode air outlet to be communicated with the second anode air outlet in a sealing mode, enabling the first cathode air inlet to be communicated with the second cathode air inlet in a sealing mode and enabling the first cathode air outlet to be communicated with the second cathode air outlet in a sealing mode, and enabling the first notch and the second notch to form a cooling medium channel.
2. The air-cooled aluminum metal bipolar plate of claim 1, wherein the aluminum metal anode plate has a thickness of 0.075-0.2 mm.
3. The air-cooled aluminum metal bipolar plate of claim 1, wherein the aluminum metal cathode plate has a thickness of 0.075-0.2 mm.
4. The air-cooled aluminum metal bipolar plate of claim 1, wherein the first grooves have a groove width of 0.4-1.5 mm and a groove depth of 0.4-1.5 mm, and the first ridges have a ridge width of 0.4-1.5 mm.
5. The air-cooled aluminum metal bipolar plate of claim 1, wherein the second grooves have a groove width of 0.4-1.5 mm and a groove depth of 0.4-1.5 mm, and the second ridges have a ridge width of 0.4-1.5 mm.
6. The air-cooled aluminum metal bipolar plate of claim 1, wherein the distance between two adjacent first protruding blocks is 5-20mm, the length of each first protruding block in the left-right direction is 2-10 mm, and the height of each first protruding block is 0.2-1.0 mm.
7. The air-cooled aluminum metal bipolar plate of claim 1, wherein the distance between two adjacent second bumps is 5-20mm, the length of each second bump in the left-right direction is 2-10 mm, and the height of each second bump is 0.2-1.0 mm.
8. The air-cooled aluminum metal bipolar plate of claim 1, wherein the surface of the aluminum metal anode plate is coated with a high-conductivity corrosion-resistant coating, and the coating is a noble metal coating or a carbon-based coating.
9. The air-cooled aluminum bipolar plate of claim 1, wherein the surface of the aluminum cathode plate is coated with a high-conductivity corrosion-resistant coating, and the coating is a noble metal coating or a carbon-based coating.
10. The air-cooled aluminum bipolar plate of claim 1, wherein the aluminum anode plate and the aluminum cathode plate are formed by stamping, roll forming, hydroforming, soft mold forming and etching.

Description

Air-cooled aluminum metal bipolar plate Technical Field The invention relates to the field of fuel cells, in particular to an air-cooled aluminum metal bipolar plate. Background In the world, due to the world energy crisis and the increased pollution of the traditional energy source to the environment, the fuel cell (fuel cell) is widely focused on various types of fuel cells worldwide as a new power supply device with high energy density, high energy conversion rate and environmental protection, wherein the Proton Exchange Membrane Fuel Cell (PEMFC) adopting the polymer proton exchange membrane as the electrolyte has the advantages of low working temperature, high starting speed, convenient modular installation and operation and the like compared with other types of fuel cells, and is considered to be the best alternative power supply for electric vehicles, submarines, various movable power supplies, power supply grids, fixed power supplies and the like. At present, proton Exchange Membrane Fuel Cells (PEMFC) are mainly divided into two major types, namely liquid cooling fuel cells and air cooling fuel cells, and the power density of the liquid cooling fuel cells is higher, but complex auxiliary systems, such as an air supply subsystem consisting of an air compressor, a humidifier, an intercooler and the like, a hydrogen supply subsystem consisting of a hydrogen bottle, a pressure reducing valve, a hydrogen proportional valve, a hydrogen circulating pump or a hydrogen ejector, a heat management subsystem consisting of a cooling water tank, a cooling water pump, a deionized water filter, a thermostat and the like, and a complex control system are required, so that the complexity of the system is higher, the cost is difficult to reduce, and the trouble is not small for the integration level of the system. The air-cooled fuel cell has a simpler system, namely a simple air subsystem consisting of a fan, and a simple hydrogen supply subsystem consisting of a hydrogen bottle, a pressure reducing valve, a tail electromagnetic valve and the like. The air supplied in the air subsystem acts on the one hand as a reactant gas and on the other hand as a cooling medium, but due to its limited cooling capacity, the fuel cell cannot operate at high power densities. Therefore, in order to simplify the system structure and to ensure stable operation of the fuel cell at high power density, it is necessary to develop an air-cooled bipolar plate having a high cooling capacity. Disclosure of Invention The invention provides an air-cooled aluminum metal bipolar plate, which aims to solve the problem of low cooling efficiency of an air-cooled fuel cell. The invention adopts the following technical scheme that the air-cooled aluminum metal bipolar plate comprises an aluminum metal anode plate, an aluminum metal cathode plate and a plurality of bonding sealing gaskets. The aluminum anode plate is horizontally arranged along the left-right direction, and a first groove which is arranged along the left-right direction and has an upward opening is arranged on the upper end surface of the aluminum anode plate. A plurality of first ridges are arranged in the first groove along the left-right direction. The first ridges are arranged at intervals along the front-rear direction and divide the first groove into a plurality of first grooves which are communicated with each other so as to circulate air. A plurality of first protruding blocks are arranged in the first groove at intervals along the left-right direction. The lower end face of the aluminum anode plate is provided with a plurality of first notches with downward openings. The first gaps are arranged on the lower sides of the first bumps and correspond to each other one by one. The left side of the aluminum anode plate is provided with a first anode air inlet and a first cathode air outlet. The first anode inlet communicates with the first channel. The right side of the aluminum anode plate is provided with a first anode gas outlet and a first cathode gas inlet. The first anode gas outlet communicates with the first channel. The aluminum metal cathode plate is horizontally arranged below the aluminum metal anode plate along the left-right direction, and a second groove which is arranged along the left-right direction and has a downward opening is arranged on the lower end surface. A plurality of second ridges are arranged in the second groove along the left-right direction. The second ridges are arranged at intervals along the front-rear direction and divide the second grooves into a plurality of second grooves which are communicated with each other so as to circulate air. A plurality of second protruding blocks are arranged in the second groove at intervals along the left-right direction. The lower end face of the aluminum metal cathode plate is provided with a plurality of second notches with upward openings. The second gaps are arranged at the lower sides of the second convex blo