CN210576235U

CN210576235U - Active positive pressure oxygen supply system of metal-air battery stack

Info

Publication number: CN210576235U
Application number: CN201921775764.2U
Authority: CN
Inventors: 黄宗洪; 曾玉府; 陈寄喜
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-10-22
Filing date: 2019-10-22
Publication date: 2020-05-19
Anticipated expiration: 2029-10-22

Abstract

The utility model discloses an active positive pressure oxygen supply system of a metal-air battery pile.A vent plate is arranged outside the positive electrode of each battery cell in the pile, a vent window exposing the positive electrode is arranged on the vent plate, a plurality of vent grooves are arranged on the surface of the outer side of the vent plate, and at least one end of each vent groove is communicated with the vent window; be equipped with air inlet and the gas vent with the air channel intercommunication on the monomer frame, butt joint one by one after the monomer coincide concatenation of battery between the gas vent between the free air inlet of adjacent battery and between the gas vent, whole galvanic pile forms continuous inlet channel and exhaust passage, form a plurality of air current channel that communicate inlet channel and exhaust passage through ventilation window and air channel on the breather plate between the adjacent battery anodal, wherein inlet channel is connected to gas conveying equipment, and gas recovery equipment can be connected to exhaust passage. The utility model provides an inhomogeneous scheduling problem of circulation supply of inside air between a plurality of battery monomer in the metal-air battery pile, and simple structure, compactness.

Description

Active positive pressure oxygen supply system of metal-air battery stack

Technical Field

The utility model relates to a metal-air battery technical field, concretely relates to initiative malleation oxygen system of metal-air battery pile.

Background

The metal-air battery monomer is a chemical power supply which takes oxygen in the air as a positive active material, takes metal as a negative active material and takes a conductive solution as an electrolyte, and generates electric energy through a discharge reaction under the catalytic action of a positive catalyst.

The outermost layer of the anode material adopted by the metal-air battery is a waterproof breathable layer, so that the metal-air battery has breathability, outside air can enter the anode, and electrolyte inside the reaction cavity cannot leak out through the anode. In order to ensure continuous and stable discharge reaction of the battery, air needs to be continuously introduced into the positive electrode. The air supply mode of the existing metal-air battery is as follows: 1. natural flow is generated by the negative pressure state formed after the positive electrode consumes the oxygen in the air; 2. and the supply is realized by utilizing a plurality of fans on the side surface of the pile to supply air. The disadvantages of these two non-uniform air intake methods are: (1) the heat dissipation of the anodes of all the battery monomers is inconsistent; (2) the consumption of the negative electrodes of the battery monomers is inconsistent, and the consumption of the battery monomers with good ventilation is more than that of the battery monomers with poor ventilation, so that the discharging reaction is not uniform; (3) the volume is increased and the energy consumption is increased.

SUMMERY OF THE UTILITY MODEL

To the defect among the prior art, the utility model provides a metal-air cell galvanic pile's initiative malleation oxygen system to solve in the current galvanic pile inside air circulation supply inefficiency between a plurality of battery monomers, admit air inhomogeneous, the structure is complicated and anodal radiating problem.

The utility model discloses an above-mentioned technical problem is solved to following technical means:

the initiative malleation oxygen system of metal-air battery pile, the pile is cascaded the coincide installation by two at least metal-air battery monomers and forms, battery monomer includes monomer frame, symmetry setting at the anodal of monomer frame both sides and insert the negative pole of establishing in monomer frame, the initiative malleation oxygen system of pile includes:

the ventilation plate is arranged on the outer side of the single battery anode, a ventilation window for exposing the anode is arranged on the ventilation plate, a plurality of ventilation grooves are arranged on the outer side surface of the ventilation plate, and at least one end of each ventilation groove is communicated with the ventilation window;

the single frames are provided with air inlets and air outlets communicated with the vent grooves in a penetrating manner, the air inlets and the air outlets of the adjacent single frames are butted one by one after the single batteries are overlapped and spliced so as to form an air inlet channel and an air outlet channel of the whole electric pile, and a plurality of air flow channels communicated with the air inlet channel and the air outlet channel are formed between the positive electrodes of the adjacent single batteries through vent windows and the vent grooves on the vent plates; the gas inlet channel is connected with gas conveying equipment with a gas purification function, and the gas exhaust channel is connected with gas recovery equipment.

Further, the vent window on the vent plate is positioned in the projection range of the discharge reaction area in the battery cell on the positive electrode.

Furthermore, be provided with the partition muscle in the louver, the louver is cut apart into a plurality of louver units to the partition muscle, also be provided with the air channel on the partition muscle, two adjacent louver units are linked together through the air channel on the partition muscle.

Further, the vent grooves are arranged in the length direction and the width direction of the vent plate.

Further, the air inlet and the air outlet are arranged in a penetrating mode along the superposition direction of the single frame.

Further, the air inlet sets up the bottom of monomer frame, the gas vent is provided with two, two the gas vent symmetry sets up the top both sides of monomer frame.

Furthermore, flow guide grooves for respectively communicating the air grooves on the air vent plate with the air inlet and the air outlet are formed in the outer side surface of the single frame, and one of the flow guide grooves is formed between the air inlet and the bottom edge of the air vent plate; the other one is horizontally arranged above the top edge of the aeration plate, and both ends of the other one are communicated with the exhaust port.

Further, the vent groove is of a semicircular section, an elliptic section or a polygonal section.

The beneficial effects of the utility model are embodied in:

the utility model discloses an among the battery monomer, the breather plate as with the part of anodal contact, simultaneously with adjacent battery monomer on the breather plate coincide form the part of ventilating to the anodal air feed. The vent plate is provided with a vent window and a vent groove, an air inlet channel and an air outlet channel which are formed after superposition of an air inlet and an air outlet on a single battery are combined to form an air flow channel communicated between the galvanic piles, air is blown from an inner pipeline of the single frame to enter two side surfaces of the single battery through air conveying equipment such as a fan, the air is discharged from the two sides of the vent groove of the vent plate or the air outlets on the two sides of the upper part of the vent plate through the air flow channel formed after superposition of the vent plates of the adjacent single batteries to provide oxygen required by reaction for the positive electrode of the battery, air circulation among a plurality of single batteries is realized, and the air supply efficiency required by the metal-air battery reaction; if the two-side vent grooves are closed, the air is exhausted only by using the exhaust ports on the two sides of the upper part or the exhausted air can be collected and recycled when the oxygen cylinder is used for supplying air, so that the electric pile can be used under a closed environment.

To sum up, the utility model discloses an initiative malleation oxygen suppliment circulation system structure, the circulation supply problem of inside air between a plurality of battery monomer in the pile has been solved, airflow channel combines anodal fixed knot to construct the setting, moreover, the steam generator is simple in structure, and is compact, it is even to admit air, the volume after having reduced the pile coincide installation, air intake passage provides mobile circulating air through independent pipeline initiative, required air supply equipment energy consumption is minimum, the air of initiative malleation circulation not only provides the positive pole that discharge reaction is required, sufficient oxygen, and the heat on positive pole surface has still been taken away, the cooling heat dissipation problem of positive pole has been improved, the life of positive pole has been improved, and can connect the oxygen cylinder operation under low oxygen or anaerobic state, the application scope of metal-air battery has been improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.

Fig. 1 is a schematic diagram of a stack structure in which a plurality of metal-air battery cells are stacked in an embodiment;

FIG. 2 is a schematic diagram of a metal-air battery cell in an embodiment;

FIG. 3 is an exploded view of the positive electrode of the metal-air battery in the example;

FIG. 4 is a schematic view of a single frame structure in an embodiment;

FIG. 5 is a schematic diagram of an embodiment of a vent structure;

FIG. 6 is a side view of an aeration panel in an embodiment;

fig. 7 is a schematic diagram of the air flow path on the metal-air battery cell in the example.

The device comprises a single frame, a reaction window, a positive sealing groove, an air inlet, an air outlet, a guide groove and a fixing through hole, wherein the single frame is 1, the reaction window is 100, the positive sealing groove is 107, the air inlet is 121, the air outlet is 122, the guide groove is 123, and the fixing through hole is 131;

2-positive electrode, 200-positive electrode lead-out copper sheet, 21-positive electrode sealing ring, 22-vent plate, 221-vent window, 222-vent groove, 223-vent plate positioning hole and 23-separation rib;

3-cathode, 300-cathode leading out copper sheet.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.

It is to be noted that unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the present invention belongs.

As shown in fig. 1, the stack in the figure is formed by stacking and assembling a plurality of metal-air battery cells in a cascade connection manner, in the cascade stacking and assembling process of the plurality of battery cells, an air inlet channel, an air outlet channel and an air flow channel between each battery cell of the stack active positive pressure oxygen supply system are formed between adjacent battery cells, the air inlet 121 on the outermost side is connected with a gas conveying device to provide air for each metal-air battery cell of the stack, and the air outlet 122 realizes the discharge and collection of air flow, thereby realizing the free circulation of air inside and outside the stack.

Specifically, as shown in fig. 2-4, the metal-air battery cell in this embodiment includes a cell frame 1, a positive electrode 2 and a negative electrode 3, a reaction cavity is disposed inside the cell frame 1, the reaction cavity is respectively provided with reaction windows 100 corresponding to two side surfaces of the cell frame 1, the negative electrode 3 is fixedly inserted into the reaction cavity, the positive electrode 2 is pressed and fixed on a superposed side surface of the cell frame 1 through a vent plate 22, the reaction window 100 disposed on the side surface and communicated with the reaction cavity is covered and sealed, a channel for electrolyte circulation is formed by being parallel and opposite to the negative electrode 3 in the reaction cavity, the vent plate 22 is attached to an outer side of the positive electrode 2, the positive electrode 2 is pressed and assembled on the side surface of the cell frame 1 through the vent plate 22, the reaction window 100 is covered and sealed, a circle of positive sealing ring 21 is assembled between the positive electrode 2 and the cell frame 1 at, the monomer frame 1 is provided with an anode sealing groove 107 for embedding an anode sealing ring at the periphery of the reaction window 100, so that the sealing of electrolyte in the reaction cavity body at the reaction window 100 is realized, the sealing of the electrolyte can be realized by the anode 2, and air can enter the anode of the reaction window 100 to provide oxygen for the discharge reaction in the reaction cavity body. The cell frame 1 is provided with a positive lead copper sheet 200 and a negative lead copper sheet 300 for leading out the positive electrode 2 and the negative electrode 3. The present embodiment is intended to specifically describe the air supply manner of the battery anode, and the anode and the cathode of the metal-air battery are conventional in the art, and the present embodiment does not describe the anode material and the cathode material and the power generation principle of the metal-air battery again.

Referring to fig. 5 and 6, after the positive electrode 2 and the vent plate 22 are assembled and fixed, the catalyst layer on the inner side of the positive electrode 2 contacts with the discharge reaction region inside the cell frame 1, the vent plate 22 is provided with a vent window 221 exposing the positive electrode 2, the outer surface of the vent plate 22 is provided with a plurality of vent grooves 222, and at least one end of each vent groove 222 is communicated with the vent window. The outer side of the vent plate 22 is provided with a circle of vent plate positioning holes 223, and the vent plate 22 is fixed with the single frame 1 through the vent plate positioning holes 223, so that the positive electrode 2 is tightly pressed and assembled.

The inside surface that air vent plate 22 hugs closely anodal 2 is smooth plane, guarantee to flatten to anodal 2 surface, air vent 221 on the air vent plate 22 is located the projection scope of battery internal discharge reaction region on anodal 2, in order to avoid the too big outside bulging deformation of positive pole that leads to of vacant area of air vent 221, be provided with in the air vent 221 and separate muscle 23, it is a plurality of air vent units with air vent 221 partition to separate muscle 23, it also is provided with air duct 222 on muscle 23 to separate, two adjacent air vent units are linked together through air duct 222 on the muscle 23 that separates.

The ventilation grooves 222 provided in the ventilation plate 22 in the embodiment shown in the drawings are semicircular grooves, or grooves with an elliptical cross section or a polygonal cross section, the ventilation grooves 222 are arranged in the length direction and the width direction of the ventilation plate 22, namely, the vent-holes 221 are provided with the vent-grooves 222 arranged along the width direction between the vent-holes 221 and the length side of the vent-plate 22, the vent-grooves 222 arranged along the length direction between the vent-holes 221 and the width side of the vent-plate 22, and the ventilation slots are all arranged through the side edges of the ventilation board and the ventilation window, so that one end of each ventilation slot 222 is communicated with the ventilation window, the other end of each ventilation slot extends to the end surface of the ventilation board 22, in the stack in which a plurality of battery cells are stacked in a cascade manner, cell frames of adjacent battery cells are pressed and contacted through the vent plate 22, and the vent grooves 222 and the vent windows 221 corresponding to the vent plate 22 form airflow channels for communicating the battery anode and the outside of the battery.

Referring to fig. 4 again, the cell frame 1 is further provided with an air inlet 121 and an air outlet 122, the air inlet 121 and the air outlet 122 are respectively communicated with the vent grooves 222 on the vent plates 22 assembled on the cell frame 1, the air inlets 121 and the air outlets 122 of the cell main bodies 1 of adjacent cells in the stack are in one-to-one butt joint after the cells are cascaded, overlapped and spliced to form continuous air inlet channels and air outlet channels inside the stack, the air inlet channels and the air outlet channels are independently separated and are respectively communicated with the air flow channels formed by the vent windows and the vent grooves between the vent plates 22 of the adjacent cells to form an air supply channel network inside the whole stack, the air inlet of the outermost cell is communicated with a gas conveying device through a pipeline, such as an air pump, the air flow is conveyed to the air flow channels between the cells through the air inlet channels and then is discharged and collected through the air outlet channels, the free flow of air in the electric pile is realized, and the utilization efficiency of oxygen required by the anode of the battery is improved; the cooling and heat dissipation problems of the anode are improved, and the service life of the anode is prolonged.

Referring to fig. 4 and 7, in the present embodiment, the air inlet 121 and the air outlet 122 are respectively located above and below the battery cell frame 1, wherein the air inlet 121 is located on the cell frame 1 below the vent plate 22, and the air outlet 122 is located on the cell frame 1 above the vent plate 22, since the vent plate 22 only covers the area where the positive electrode is located, the present embodiment provides the diversion grooves 123 between the air inlet 121 and the bottom edge of the vent plate 22 and on the outer side surface of the cell frame at the top edge of the air outlet 122 and the vent plate 22, so as to respectively communicate the air outlet 122 and the air inlet 121 on the vent plate 22. The air flow entering from the air inlet 121 enters the ventilation grooves 222 on the ventilation plate 22 through the diversion grooves 123 at the bottom and enters the anode 2 through the ventilation windows 221 along the ventilation grooves 222 as shown by arrows in fig. 7, so as to ensure the continuous supply of oxygen required for the discharge reaction of the anode 2, and the flowing air flow part directly exits the stack from the ventilation grooves 222 on both sides of the ventilation plate 22, or enters the air outlet 122 from the ventilation grooves 222 on the upper part of the ventilation plate 22 through the upper diversion grooves 123 under the condition that the ventilation grooves 222 on both sides are closed, and the redundant oxygen is recovered through the air outlet channel.

The electric pile is formed by cascading, superposing and assembling a plurality of battery monomers, a fixing through hole 131 for superposing and connecting the battery monomers in series is arranged on a single battery frame 1 along the superposition direction, meanwhile, an air inlet 121 and an air outlet 122 on the single battery frame 1 are both arranged along the single battery superposition direction to penetrate through the single battery frame 1, after the electric pile is assembled by cascading and superposing, between the fixing through holes 131, a complete channel is formed by coaxially butting between the air inlet 121 and the air outlet 122, wherein the electric pile is positioned and locked by the fixing through hole 131 through a guide rod and a connecting piece, the air inlet 121 and the air outlet 122 form an air inlet channel and an air outlet channel for supplying air, and a plurality of air flow channels for communicating the air inlet channel and the air outlet channel are formed between the positive electrodes 2 of adjacent battery monomers through a ventilation window 221 and a.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the scope of the embodiments of the present invention, and are intended to be covered by the claims and the specification.

Claims

1. The utility model provides an initiative malleation oxygen system of metal-air battery pile, the pile is cascaded coincide installation by two at least metal-air battery monomers and forms, the battery monomer includes monomer frame (1), symmetry setting at anodal (2) of monomer frame (1) both sides and insert negative pole (3) of establishing in monomer frame (1), its characterized in that, the initiative malleation oxygen system of pile includes:

the battery pack comprises a vent plate (22) arranged on the outer side of a battery single positive electrode (2), wherein the vent plate (22) is provided with a vent window (221) exposing the positive electrode (2), the outer side surface of the vent plate (22) is provided with a plurality of vent grooves (222), and at least one end of each vent groove (222) is communicated with the vent window (221);

the single frame (1) is provided with an air inlet (121) and an air outlet (122) communicated with the vent groove (222) in a penetrating manner, the air inlets (121) and the air outlets (122) of the adjacent single frames (1) are butted one by one after the single batteries are overlapped and spliced to form an air inlet channel and an air outlet channel of the whole electric pile, and a plurality of air flow channels communicated with the air inlet channel and the air outlet channel are formed between the positive electrodes (2) of the adjacent single batteries through vent windows (221) and the vent groove (222) on the vent plate (22); the gas inlet channel is connected with a gas conveying device, and the gas exhaust channel is connected with a gas recovery device.

2. The active positive pressure oxygen supply system of the metal-air cell stack of claim 1, wherein: the ventilation window (221) on the ventilation plate (22) is positioned in the projection range of the discharge reaction area in the battery cell on the positive electrode (2).

3. The active positive pressure oxygen supply system of the metal-air cell stack of claim 1, wherein: the novel ventilating window is characterized in that partition ribs (23) are arranged in the ventilating window (221), the partition ribs (23) divide the ventilating window (221) into a plurality of ventilating window units, ventilating grooves (222) are also formed in the partition ribs (23), and two adjacent ventilating window units are communicated through the ventilating grooves (222) in the partition ribs (23).

4. The active positive pressure oxygen supply system of the metal-air cell stack of claim 3, wherein: the vent grooves (222) are arranged in the length direction and the width direction of the vent plate (22).

5. The active positive pressure oxygen supply system of the metal-air cell stack of claim 1, wherein: the air inlet (121) and the air outlet (122) are arranged in a penetrating mode along the cascade superposition direction of the single frame (1).

6. The active positive pressure oxygen supply system of the metal-air cell stack of claim 1, wherein: the air inlet (121) is arranged at the bottom of the single frame (1), the number of the air outlets (122) is two, and the two air outlets (122) are symmetrically arranged on two sides of the top of the single frame (1).

7. The active positive pressure oxygen supply system of metal-air cell stack of claim 6, wherein: the outer side surface of the single frame (1) is provided with guide grooves (123) which respectively conduct the vent grooves (222) on the vent plate (22) with the air inlet (121) and the air outlet (122), wherein one guide groove (123) is arranged between the air inlet (121) and the bottom edge of the vent plate (22); the other is horizontally arranged above the top edge of the aeration plate (22), and both ends of the other are communicated with the exhaust port (122).

8. The active positive pressure oxygen supply system of a metal-air cell stack of any one of claims 1-7, wherein: the vent groove (222) has a semicircular section, an elliptical section or a polygonal section.