CN210576346U

CN210576346U - Metal-air battery monomer positive electrode sealing installation structure

Info

Publication number: CN210576346U
Application number: CN201921781016.5U
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 a metal-air battery monomer positive pole seal installation structure, including breather plate, anodal, positive sealing washer, monomer frame, hot melt post and locating hole, the breather plate will anodal, positive sealing washer compress tightly on the monomer frame in the reaction window outside, and positive sealing washer is embedded in positive seal groove, and the hot melt post sets up along positive seal groove or reaction window's periphery, and on the breather plate, anodal and positive sealing washer were seted up to the locating hole, the hot melt post passed the locating hole on positive sealing washer, anodal and the breather plate, expands into the hot melt head through the hot melt with the hot melt post outside the breather plate with breather plate, anodal and positive sealing washer seal fixation in monomer frame. The utility model provides an anodal seal installation complex operation and sealed not firm problem, and this kind of seal installation mode is simple reliable, anodal packaging efficiency is high, anodal pressure on the face that receives is even, and the product uniformity is good, can not cause anodal material's damage moreover, more is fit for batch production and the categorised recycle of environmental protection.

Description

Metal-air battery monomer positive electrode sealing installation structure

Technical Field

The utility model relates to a metal-air battery technical field, concretely relates to anodal seal installation structure of metal-air battery monomer.

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.

In the structure of the metal-air battery, the sealing problem of the positive electrode is a breakthrough difficulty of the battery, and the currently common mode is an adhesive structure, which has the following problems: 1. in the main body structure, the deformation coefficients of the plastic, the adhesive and the air anode are different at different temperatures, and the temperature of the metal-air battery generates a large temperature difference when working, so that the displacement of the adhesive is separated to cause sealing failure when the temperature is changed; 2. the gluing and sealing mode is complicated to operate, the positive electrode and the monomer frame are required to be pressed and kept for a period of time after bonding, so that the bonding between the positive electrode and the monomer frame is complete, the production efficiency is low, the bonding consistency cannot be guaranteed, electrolyte leakage can be caused once the bonding is incomplete, the repair is difficult, the positive electrode can be damaged after the bonding is carried out, and the positive electrode can not be used again after being damaged; 3. the catalytic surface of the anode is modified and hardened by using an adhesive, a soft-hard alternating front line is formed at the intersection part of the anode and the cathode, and after the anode works for a period of time, the anode is fatigued and cracked and leaks on the soft-hard alternating front line due to low-frequency oscillation caused by the flowing of the anode along with electrolyte; 4. the glue has poor alkali resistance and temperature resistance, is easy to age and has short service life.

SUMMERY OF THE UTILITY MODEL

An object of the embodiment of the utility model is to provide a anodal seal installation structure of metal-air battery monomer to positive seal installation complex operation, inefficiency and sealed not firm technical problem among the solution prior art, under the cooperation of standardized production tool, realize semi-automatic assembly line battery monomer anodal installation production simultaneously.

In order to achieve the above object, an embodiment of the present invention provides a single metal-air battery positive electrode sealing and mounting structure, in which the single metal-air battery includes a single frame and a positive electrode, the single frame includes a reaction window disposed on a side surface, and the single frame at the periphery of the reaction window is provided with a positive electrode sealing groove, the single frame at the periphery of the positive electrode sealing groove is provided with a plurality of protruding hot-melting columns, the positive electrode sealing and mounting structure includes a vent plate, a positive electrode and a positive electrode sealing ring, the vent plate presses the positive electrode and the positive electrode sealing ring onto the single frame at the outer side of the reaction window, the positive electrode sealing ring is embedded in the positive electrode sealing groove, the vent plate, the positive electrode and the positive electrode sealing ring are provided with positioning holes corresponding to the hot-melting columns one by one, and the heads of the hot-melting columns pass through the positioning holes on the vent plate, the positive electrode and the positive electrode, and the outer side of the ventilation plate is expanded into a hot melting head through hot melting, and the hot melting head compresses and limits the ventilation plate, the positive electrode and the positive electrode sealing ring on the single frame.

Furthermore, a plurality of ventilation windows are arranged on the ventilation plate corresponding to the reaction windows.

Furthermore, the inner side surface of the vent plate close to the anode is a smooth plane, the outer side surface of the vent plate far away from the anode is provided with a plurality of vent grooves, and the vent grooves are communicated with the vent window.

Further, the side of the positive electrode is provided with a positive current collector leading-out folding edge, and when the positive electrode is pressed on the monomer frame outside the reaction window through the vent plate, the positive current collector leading-out folding edge extends to the front end face and the rear end face of the monomer frame.

Furthermore, a plurality of leading-out folding edge fixing holes which are distributed at equal intervals are formed in the leading-out folding edge of the positive current collector.

Further, the leading-out folded edge of the positive current collector is an extension part of a metal mesh or a metal plate of the positive current collector.

The utility model discloses an among the metal-air battery monomer anodal seal mounting structure, locating hole on the positive seal circle is located to inlay and inlays the dress outside the region of anodal seal groove to the aperture is less than the external diameter of hot melt post.

The utility model discloses an among the anodal sealed mounting structure of metal-air battery monomer, the hot melt post be with the integrative injection moulding's of monomer frame uniform cross-section columnar structure.

The utility model discloses an among the metal-air battery monomer anodal seal installation structure, the breather plate with monomer frame is the same material, and both are the same when receiving the battery and generate heat the deformation that produces, have avoided producing the sealed inefficacy that different deformations result in because different materials when the battery generates heat.

The utility model discloses an among the positive sealed mounting structure of metal-air battery monomer, the both sides face symmetry of monomer frame is equipped with reaction window, the both sides face of monomer frame is provided with the hot melt post, and is two sets of around reaction window symmetry the reaction window department in monomer frame both sides face is installed to breather plate, anodal sealing washer and anodal symmetry.

The utility model discloses paste and cover the breather plate again behind monomer frame's reaction window outside face subsides lid anodal, all be equipped with on anodal and the breather plate with the monomer frame locating hole that hot melt post corresponds, with all anodal locating holes and the hot melt post on the breather plate after aligning one by one, compress tightly breather plate and anodal, then once form the hot melt head of back-off with all hot melt post tip hot melts through hot melt equipment, the diameter of locating hole on the breather plate is surpassed to the hot melt head inflation back dimension, it is spacing to form the breather plate, compress tightly the fastening with anodal through this kind of mode, reaction window on the monomer frame forms sealedly. Whole seal structure passes through the spacing anodal compressing tightly of realizing of hot melt head, utilizes the extrusion sealing washer to realize anodal sealed, does not adopt sticky structure, has avoided the vibration fracture that leads to after sticky hair is hard, and sealed life-span is longer to anodal can harmless dismantlement used repeatedly, has reduced the battery maintenance cost.

The utility model discloses the aeration plate is with same material with the main part, utilizes the hot melt structure riveting to become integrative back between aeration plate, anodal sealing washer and the monomer frame, has solved the inconsistent influence to seal structure of material deformation that the battery temperature variation that generates heat leads to effectively. The front and back vent plates on the two sides of the single frame are in compression fit through a symmetrical structure, so that the pressures borne by the adjacent anode faces on the two side faces of the single frame are consistent, the directions are opposite, the pressure difference caused by the height difference of electrolyte in the reaction cavity inside the single frame on the vertical face is mutually offset, and the problem of liquid leakage caused by anode deformation is effectively solved from the source. The vent grooves are formed in the vent plates, so that the weight of the vent plates is reduced, the strength of the positive electrode sealing structure is improved through the convex ribs formed by the vent grooves, and the parallelism of all positive electrodes of the stacked electric pile and the structural consistency of the single batteries are further ensured.

Through the embodiment of the utility model provides a free anodal seal installation structure of metal-air battery, the problem of anodal seal installation complex operation and sealed not firm has been solved, and this kind of seal installation mode is simple reliable, anodal packaging efficiency is high, the uniformity is good, and can not cause anodal material's damage, with the air vent board under the cooperation of standardized production tool, anodal sealing washer and hot melt post counterpoint installation back, the hot melting machine that uses one shot forming targets in place the hot melt head shaping of all hot melt posts, the assembly line operation of being convenient for, make anodal mounting process can realize semi-automatization operation, make its range when installation anodal plane pressurized deformation accomplish unanimity basically, the human factor has been got rid of, thereby make the uniformity of battery monomer preparation obtain effectual assurance, thereby the anodal non-leakage liquid has been guaranteed.

To sum up, the utility model discloses from the angle of practicality and reliability, designed a positive pole seal installation structure, its main effect is embodied in following aspect: (1) the sealing performance of the positive electrode sealing installation structure is more reliable, semi-automatic assembly line assembly production of metal-air battery monomer positive electrode assembly is realized, large-scale assembly line batch production can be realized at lower cost, and a monomer frame and a positive electrode can be subjected to nondestructive separation, so that environmental protection classification recycling is realized. (2) By changing the connection mode of the anode leading-out, the resistance of the anode leading-out is greatly reduced, the output capacity of the anode is improved, and the service life of the anode is prolonged.

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.

Fig. 1 is a schematic structural diagram of a metal-air battery cell in an embodiment of the present invention.

Fig. 2 is an exploded view of the positive electrode of the metal-air battery cell in the example.

FIG. 3 is a schematic view of a single frame structure in an embodiment.

Fig. 4 is a schematic diagram of the structure of the positive electrode in the embodiment.

Fig. 5 is a schematic diagram of a vent structure in an embodiment.

Fig. 6 is a front view of the positive electrode and the vent plate in the embodiment after they are mounted in place.

Reference numbers in the figures:

1-monomer frame, 100-reaction window, 101-insulating strip, 106-hot melting column, 106' -hot melting head, 107-anode sealing groove,

2-positive pole, 200-positive pole leading copper sheet, 201-positive pole current collector leading folding edge, 202-sealing positioning hole, 203-leading folding edge fixing hole, 21-positive pole sealing ring, 22-vent plate, 221-vent window, 222-vent groove, 223-vent plate positioning hole, 23-side cover, 24-nut blocking piece,

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

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, of the embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1 and 2, a metal-air battery cell is shown as a specific implementation structure of the positive electrode sealing and mounting structure of the present invention. The metal-air battery cell in the present embodiment includes a cell frame 1, a positive electrode 2, and a negative electrode 3. The cathode 3 is a metal electrode which can participate in the discharge reaction of the metal-air battery, and can be an aluminum plate, a magnesium plate or a zinc plate, and is fixedly inserted in the reaction cavity of the monomer frame 1. The negative lead copper sheet 300 is a lead negative connection member of the entire battery. The anode 2 is fixedly installed on the reaction window 100 of the monomer frame 1, and covers and shields the reaction window 100 communicated with the reaction chamber. This embodiment only explains the utility model discloses an anodal sealed mounting structure in detail, and the electrolysis principle and the anodal and the negative pole material of metal-air battery about metal-air battery are the conventional technology in this field, and this embodiment does not give consideration to it again here.

Specifically, in this embodiment, the positive seal mounting structure includes a vent plate, a positive seal ring, a heat-fusible column, and a positioning hole. Specifically, as shown in fig. 2, the positive electrode 2 of the present embodiment is mounted on the single frame outside the reaction window 100 by pressing the vent plate 22, and covers and shields the reaction window 100 on the side of the reaction chamber inside the single frame. The two side surfaces of the single frame 1 of the embodiment are both provided with the reaction windows 100 directly communicated to the reaction cavity, so that the two side surfaces of the single frame 1 are respectively symmetrically provided with two groups of anodes 2, and the two groups of anodes and two metal negative plates fixedly inserted in the single frame 1 are respectively opposite to form two groups of discharge reactions. The side edge of the anode 2 extends to the front end face and the rear end face of the monomer frame 1, the front end face and the rear end face of the monomer frame 1 are sealed by the side covers 23, the side edge of the anode 2 is pressed and fixed on the side covers 23 of the monomer frame 1 together with the anode lead-out copper sheet 200 through the nut retaining sheet 24, and the anode lead-out copper sheet 200 is used for anode lead-out wiring.

Referring to fig. 3 in combination, a circle of positive seal groove 107 is arranged in the monomer frame 1 located at the periphery of the reaction window 100, a circle of positive seal ring 21 (shown in fig. 2) is embedded in the seal groove 107, the positive electrode 2 is pressed against the monomer frame through the vent plate 22, the positive seal ring 21 is pressed against the positive seal groove 107, sealing between the positive electrode 2 and the reaction window 100 of the monomer frame 1 is formed, leakage of electrolyte in the reaction cavity is prevented, the positive seal ring 21 is made of a high temperature and alkali resistant soft rubber material, and the thickness of the positive seal ring 21 embedded in the seal groove 107 is greater than the depth of the seal groove 107, so that a compression margin is provided between the positive electrode 2 and the positive seal ring 21, and the sealing effectiveness of the positive seal ring 21 is ensured. Meanwhile, a circle of a plurality of hot melting columns 106 are arranged along the periphery of the anode sealing groove 107 or the reaction window 100, and the hot melting columns 106 are of uniform-section columnar structures which are integrally injection-molded with the single frame 1.

Referring to fig. 4 and 5 in combination, a circle of sealing positioning holes 202 corresponding to the hot-melting columns 106 one to one is arranged on the positive electrode 2, a circle of vent plate positioning holes 223 corresponding to the hot-melting columns 106 one to one is arranged on the vent plate 22, the sealing positioning holes 202 and the vent plate positioning holes 223 are the same in cross section as the hot-melting columns 106 and keep clearance fit, when the positive electrode 2 and the vent plate 22 are installed, after all the hot-melting columns 106 respectively pass through the sealing positioning holes 202 on the positive electrode 2 and the vent plate positioning holes 223 on the vent plate 22, the vent plate 22 is kept pressed against the positive electrode 2, the end portions of the hot-melting columns 106 extend out of the vent plate positioning holes 223, and then the end portions of the hot-melting columns 106 are. As shown in fig. 6, the diameter of the hot-melt head 106' after hot melting exceeds the aperture of the vent plate positioning hole 223 on the vent plate 22, the vent plate 22 is limited and locked from the outside, and the positive electrode 2 is tightly pressed and sealed on the single frame 1 through the vent plate 22.

The periphery of hot melt post 106 along anodal seal groove 107 distributes, anodal sealing washer 21 is except embedding the inside major structure of anodal seal groove 107, extend round location limit towards anodal seal groove 107 periphery, be equipped with the locating hole of round and hot melt post 106 one-to-one on this location edge, form the location to anodal sealing washer 21 equally through hot melt post 106 during the assembly anodal, anodal sealing washer 21 adopts the mould integrated into one piece for corrosion-resistant soft plastic, certain elastic deformation ability has, can be less than the external diameter of hot melt post with the locating hole aperture setting on anodal sealing washer 21, can make and keep certain extrusion deformation between sealing washer and the hot melt post like this, improve the location and the sealed effect of sealing washer.

Referring to fig. 3 again, the reaction window 100 of the cell frame 1 is further provided with a plurality of parallel insulating strips 101, the insulating strips 101 separate the anode from the cathode inside the battery, the reaction window 100 is divided by the insulating strips 101, and the anode 2 is supported, so that the anode 2 is prevented from contacting and short-circuiting with the cathode after being deformed due to the overlarge area of the reaction window 100.

Referring to fig. 4 again, one side of the positive electrode 2 is provided with a positive electrode (current collector) leading-out folding edge 201 extending to the front end face and the rear end face of the single frame 1, a row of leading-out folding edge fixing holes 203 are formed in the positive electrode current collector leading-out folding edge 201, the positive electrode current collector leading-out folding edge 201 is used for extending to and fixing on the end face of the single frame 1, the positive electrode current collector leading-out folding edge 201 and a positive electrode leading-out copper sheet 200 are pressed and contacted through the positive electrode current collector leading-out folding edge fixing holes 203 by screws and nuts, and a terminal of the positive electrode leading-out copper sheet 200 is led out to the top of. The positive current collector leading-out folding edge 201 adopts an extension part of a metal net or a metal plate of the positive current collector, the extension part of the metal net or the metal plate is used as the positive current collector leading-out folding edge 201 to connect the positive electrode 2 and the positive leading-out copper sheet 200, the contact area of the metal net or the metal plate at two sides of the positive electrode and the positive leading-out copper sheet 200 is large, and the metal net or the metal plate and the positive leading-out copper sheet are tightly pressed and connected on the end surface of the single frame 1 by a plurality of screws, so that the connection resistance of the^-6Ohm (microohm level) and large current-carrying capacity, and solves the problem of heating loss of the copper connecting piece during 100A large-current discharge. The positive lead-out copper sheet 200 can extend to the planes on two sides of the top of the next battery monomer arranged in an overlapped mode after being bent to be connected with the negative lead-out copper sheet 300, so that the electric pile wire arrangement formed by combining a plurality of battery monomers is realized, and the structure is simple and reliable. The sealing assembly of the anode 2 and the vent plate 22 is completed by hot melting of hot melting equipment to the hot melting column at one time, the anode 2 is sealed by a complete anode sealing ring 21, the operation is easy, and batch production can be realized by a jig.

The vent plate 22 in the present embodiment not only serves as a pressing member for pressing and fixing the positive electrode 2 to the cell frame 1, but also serves as a vent member for ventilating the positive electrode 2. Referring to fig. 5 again, the vent plate 22 is the same as the plane of the positive electrode except for the lead-out edge of the positive electrode current collector, so that the positive electrode 2 can be tightly pressed on the single frame 1, the inner side surface of the vent plate 22, which is tightly attached to the positive electrode 2, is a smooth plane, so as to ensure that the surface of the positive electrode 2 is flattened, the vent window 221 is arranged on the vent plate 22 in the area corresponding to the reaction window 100, in order to avoid the outward bulging and deformation of the positive electrode due to the excessively large vacant area of the vent window 221, the vent window 221 is divided into a plurality of rib structures, external oxygen or air contacts the positive electrode through the vent window 221 on the vent plate 22, and enters the reaction window 100 through the positive electrode to provide oxygen required for the discharge reaction. Since the cells are stacked in cascade to improve the voltage and discharge capacity, in this embodiment, a plurality of ventilation grooves 222 communicated to the ventilation windows 221 are disposed on the outer surface of the ventilation plate 22 away from the positive electrode, and one end of each ventilation groove 222 is finally communicated with the ventilation window 221, and the other end of each ventilation groove runs through to the outer edge of the ventilation plate 22 to be in butt joint with the air inlet or outlet channel of the battery system. The vent grooves 222 may be semicircular grooves arranged on the outer side surface of the vent plate 22 in a criss-cross manner as shown in fig. 5, or may be arranged in other forms according to the arrangement of the vent channels of the battery. The air or oxygen can be supplied through the ventilation groove 222 between the stacked cell frames of the plurality of cells.

The embodiment of the utility model provides a realize the seal installation between free monomer frame of metal-air battery and the positive pole, be equipped with the outstanding hot melt post of a plurality of in the reaction window periphery of monomer frame, hot melt post and monomer frame integrated into one piece to be equipped with positive seal groove at reaction window's edge, install positive sealing washer in positive seal groove, install the aeration plate again behind positive sealing washer's lateral surface installation positive pole. All be equipped with the location hole site that corresponds with hot melt post on the monomer frame on anodal and the breather plate, after location hole site and hot melt post on with all anodals and the breather plate align one by one, compress tightly breather plate and anodal, then once with the hot melt head of all hot melt post tip hot melts formation back-off through hot melt equipment, the diameter of location hole site on the size exceedes the breather plate after the hot melt head inflation, it is spacing to the breather plate formation, compress tightly the fastening with anodal through this kind of mode, reaction window on the monomer frame forms sealedly.

To sum up, the embodiment of the utility model provides a anodal seal installation structure of metal-air battery monomer has solved anodal seal installation complex operation and sealed not firm problem, this kind of seal installation mode is simple reliable, anodal packaging efficiency is high, the uniformity is good, and can not cause the damage of anodal material, under the cooperation of standardized production tool, the semi-automatization assembly line production of anodal equipment has been realized, can realize extensive assembly line batch production by lower cost, can also carry out the complete segregation with monomer frame and positive pole, thereby realize the categorised recycle of environmental protection. By changing the connection mode of the anode leading-out, the resistance of the anode leading-out is greatly reduced, the output capacity of the anode is improved, and the service life of the anode is prolonged.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of various equivalent modifications or replacements within the technical scope of the present invention, and these modifications or replacements should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A metal-air battery monomer anode sealing installation structure comprises a monomer frame and an anode, wherein the monomer frame comprises a reaction window arranged on the side face, and the metal-air battery monomer anode sealing installation structure is characterized in that an anode sealing groove is arranged on the monomer frame on the periphery of the reaction window, a plurality of raised hot melting columns are arranged on the monomer frame on the periphery of the anode sealing groove, the anode sealing installation structure comprises an air vent plate, an anode and an anode sealing ring, the air vent plate tightly presses the anode and the anode sealing ring on the monomer frame on the outer side of the reaction window, the anode sealing ring is embedded in the anode sealing groove, positioning holes corresponding to the hot melting columns one by one are arranged on the air vent plate, the anode and the anode sealing ring, the head of the hot melting column penetrates through the positioning holes on the air vent plate, the anode and the anode sealing ring, and the air vent plate is expanded into a hot melting head through hot melting, and the hot melting head compresses the vent plate, the positive electrode and the positive electrode sealing ring to limit the vent plate, the positive electrode and the positive electrode sealing ring on the single frame.

2. The metal-air battery cell positive seal mounting structure of claim 1, wherein a plurality of vent windows are provided on the vent plate in regions corresponding to the reaction windows.

3. The positive electrode sealing and mounting structure of metal-air battery cell according to claim 2, wherein the inner surface of the vent plate close to the positive electrode is a smooth plane, and the outer surface of the vent plate away from the positive electrode is provided with a plurality of vent grooves, and the vent grooves are in longitudinal and transverse communication with the vent window.

4. The metal-air battery cell positive seal mounting structure of claim 2, wherein a positive current collector lead-out hem is provided at a side edge of the positive electrode, and when the vent plate presses the positive electrode against the cell frame outside the reaction window, the positive current collector lead-out hem extends to front and rear end faces of the cell frame.

5. The metal-air battery cell positive seal mounting structure of claim 4, wherein the positive current collector lead-out flange is provided with a plurality of lead-out flange fixing holes arranged at equal intervals.

6. The metal-air battery cell positive seal mounting structure of claim 4, wherein the positive current collector lead-out flange is an extension of a metal mesh or metal plate of the positive current collector.

7. The metal-air battery cell positive electrode seal mounting structure of any one of claims 1 to 6, wherein the positive electrode seal ring is made of a high temperature resistant and alkali resistant soft rubber material, and the positioning hole is located outside the region embedded in the positive electrode seal groove and has a diameter smaller than the outer diameter of the hot melt column.

8. The metal-air battery cell positive seal mounting structure of any one of claims 1-6, wherein the heat-fusible column is a uniform-section column structure that is integrally injection-molded with the cell frame.

9. The positive electrode sealing structure of any one of claims 1 to 6, wherein the vent plate and the cell frame are made of the same material.

10. The metal-air battery cell positive electrode seal mounting structure according to any one of claims 1 to 6, wherein two side faces of the cell frame are symmetrically provided with reaction windows, two side faces of the cell frame are symmetrically provided with hot-melt posts around the reaction windows, and two sets of the vent plates, the positive electrode seal rings and the positive electrodes are symmetrically mounted at the reaction windows on the two side faces of the cell frame.