阅读说明：本技术 一种金属空气电池及其注液方法 (Metal-air battery and liquid injection method thereof ) 是由 李岩 龚昊 丁晨 于 2021-09-02 设计创作，主要内容包括：本发明提供了一种金属空气电池及其注液方法,主要包括金属阳极、空气阴极、上辅助支撑、储液装置、下辅助支撑、正负极极柱以及外包热塑膜。所述空气阴极固定密封在圆柱状上、下辅助支撑外侧面,金属阳极位于空气阴极和辅助支撑组成的圆桶内；上、下辅助支撑分别连接正负极极柱；所述储液装置位于金属阳极和上辅助支撑中间,由楔形弹片、压力弹簧、储液底座以及滑套组成；所述热塑膜全包裹在电池外侧,仅留出上下正负极极柱。电池使用时通过按压滑套带动楔形弹片从而打开储液腔室来实现电池注液。本发明的金属空气电池及其注液方法操作便捷,电池在使用时无需临时添加电解液和更换金属阳极,可用于应急以及小功率用电设备。(The invention provides a metal-air battery and a liquid injection method thereof. The air cathode is fixedly sealed on the outer side surfaces of the cylindrical upper auxiliary support and the cylindrical lower auxiliary support, and the metal anode is positioned in a barrel formed by the air cathode and the auxiliary supports; the upper and lower auxiliary supports are respectively connected with the positive and negative pole posts; the liquid storage device is positioned between the metal anode and the upper auxiliary support and consists of a wedge-shaped elastic sheet, a pressure spring, a liquid storage base and a sliding sleeve; the thermoplastic film is completely wrapped outside the battery, and only upper and lower positive and negative electrode posts are reserved. Thereby it realizes the battery notes liquid to open the stock solution cavity through pressing the sliding sleeve drive wedge shell fragment when the battery uses. The metal-air battery and the liquid injection method thereof are convenient to operate, and the battery does not need to temporarily add electrolyte or replace a metal anode when in use, and can be used for emergency and low-power electric equipment.)

1. A metal-air battery is characterized in that the battery structure mainly comprises an air cathode, a metal anode, an upper auxiliary support, a liquid storage device, a lower auxiliary support, a positive electrode pole, a negative electrode pole and a thermoplastic film; the upper end and the lower end of the air cathode are fixed on the outer side surfaces of the steps of the upper auxiliary support and the lower auxiliary support; the metal anode is positioned in a columnar cavity formed by the air cathode and the auxiliary support; an annular chamber is formed between the metal anode and the air cathode and is used for containing electrolyte; the liquid storage device is positioned between the metal anode and the upper auxiliary support and used for storing electrolyte; the positive and negative electrode posts are arranged at the end face positions of the upper and lower auxiliary supports.

2. The metal-air battery of claim 1, wherein the air cathode is formed by rolling a catalyst layer, a current collector and a waterproof diffusion layer; the upper end and the lower end of the inner side of the air cathode are fixed on the outer side surfaces of the steps of the upper auxiliary device and the lower auxiliary device in a surrounding manner; a current collector is reserved at the lower end part of the air cathode, is fixed to the end face of a lower step of the lower auxiliary device and is used for being connected and fixed with the anode pole; the current collector is metal nickel, copper nickel plating and metal with good corrosion resistance and conductivity; the connection mode of the current collector and the positive pole column comprises but is not limited to riveting, welding and bolting.

3. A metal-air cell according to claim 1, wherein the metal anode is located in a cylindrical chamber formed by the air cathode and the upper and lower auxiliary supports; the upper end surface and the lower end surface of the metal anode are provided with cylindrical holes, and the upper end surface is provided with steps; the metal anode can be a solid cylinder or a hollow cylinder; the metal anode material is magnesium and magnesium alloy, zinc and zinc alloy, aluminum and aluminum alloy.

4. A metal-air battery according to claim 1, wherein the electrolyte is pre-sealed inside the reservoir; the electrolyte is generally a neutral or alkaline electrolyte; the electrolyte includes, but is not limited to, a sodium chloride solution or a sodium hydroxide solution.

5. The metal-air battery of claim 1, wherein the liquid storage device is mainly composed of a wedge-shaped spring plate, a pressure spring, a sliding sleeve, a waterproof sealing membrane and a liquid storage base; the liquid storage base is provided with a sleeve and is matched and fixed with the cathode pole; the liquid storage base is provided with a spring plate support, and a pressure spring is arranged in the support; the wedge-shaped elastic sheet is closed with the liquid storage base through the pressure spring to form a liquid storage cavity; the center of the wedge-shaped elastic sheet is connected with a sliding sleeve, and the sliding sleeve can move up and down on the base sleeve; the opening mode of the liquid storage cavity is a pressing type, a rotating type or a lifting type.

6. A metal-air cell according to claim 1, wherein the upper and lower auxiliary supports are each cylindrical with a stepped face; the lower end of the upper auxiliary support is provided with a step surface for fixing and sealing an air cathode; the support center is provided with a through hole for passing through the cathode pole, the sleeve and the sliding sleeve; the lower auxiliary support is provided with an upper step and a lower step, the upper step is used for fixing and sealing the air cathode, and the end face of the upper step is provided with a cylinder for supporting the bottom of the metal anode; the lower step end face is used for fixing the current collector and the positive pole.

7. The metal-air battery as recited in claim 1, wherein the positive electrode terminal is connected with a current collector fixed at the lower auxiliary support; the negative pole post is connected with the center of the metal cylinder and reaches the position of a center hole reserved on the upper auxiliary support through a center hole reserved on the liquid storage device.

8. The metal-air battery of claim 1, wherein the thermoplastic film covers the exterior of the cylindrical battery, only the positions of the positive and negative electrode posts are reserved, and the overlapped part of the thermoplastic film and the air cathode is reserved for facilitating the opening trace.

9. The liquid injection method of the metal-air battery according to any one of claims 1-8, characterized by comprising the following steps:

(1) winding and adhering the inner side of the lower end of the air cathode to the outer side surface of the upper step of the lower auxiliary support, and fixing a current collector reserved by the air cathode to the end surface of the lower step of the lower auxiliary support to be connected and fixed with the positive pole;

(2) fixing a cathode pole to the central hole position of the upper end face of the metal anode, and attaching and fixing a base of the liquid storage cavity to the upper step end face of the metal anode through a sleeve and the cathode pole;

(3) a pressure spring is arranged in an elastic sheet support on a liquid storage chamber and is fixed, then the spring is fixedly connected in a wedge-shaped elastic sheet, and the four wedge-shaped elastic sheets are connected by a waterproof sealing film;

(4) at the moment, the wedge-shaped elastic sheets are arranged below the left side and the right side of the pressure spring, the outer circle surfaces of the wedge-shaped elastic sheets are attached to the outer end surfaces of the liquid storage cavity, electrolyte is injected at the moment, and the sliding sleeve is connected to the center of the wedge-shaped elastic sheets;

(5) the inner side of the upper end of the air cathode and the side face of the lower step of the upper auxiliary support are fixedly bonded, and meanwhile, the air cathode passes through a cathode pole column at the central hole, a sleeve and a sliding sleeve;

(6) the outside of the assembled battery is packed and fixed by a thermoplastic film, and the part of the thermoplastic film for wrapping the air cathode is provided with a trace convenient to tear;

(7) when the battery is used, the thermoplastic film at the air cathode position is torn, the sliding sleeve is pressed down, the wedge-shaped elastic sheet connected with the sliding sleeve is opened, the electrolyte flows into the cavity between the metal anode and the air cathode, and the battery starts to work.

Technical Field

The invention relates to the field of energy batteries, in particular to a metal-air battery and a liquid injection method thereof.

Background

The metal-air battery is a green energy source with wide prospect due to the advantages of environmental protection, high theoretical energy density, low cost and the like. However, since a metal anode and an aqueous electrolyte used in a metal-air battery generally undergo a self-corrosion reaction, the discharge capacity of the battery is reduced. Therefore, when the metal air battery is not discharged, the electrolyte and the metal anode need to be separated, the electrolyte is added for discharging when the metal air battery is used, and the metal anode plate and the electrolyte need to be replaced again after discharging is finished, so that the operation of the metal air battery in practical application is complicated. In the prior art, engineers and scientists have studied and researched metal-air batteries in order to design safe and convenient air batteries.

CN101783428B proposes a low-pressure molding package structure of a fuel cell, which comprises: the outer shell is provided with a plurality of vent holes on at least one surface, and a concave first accommodating part is formed on the periphery of the inner surface of each vent hole; an air electrode and an isolation film are superposed on the inner surfaces of the plurality of air holes; a hollow fixed part, which is arranged in the shell, and is provided with an annular flange adjacent to the surface of the isolating membrane in a protruding way, so that a concave second containing part is formed at the outer side of the hollow fixed part, and a C-shaped flow channel is formed by the second and the first containing parts; and a hot melt adhesive layer, which is injected from the pouring opening of the shell or the fixing piece in a low-pressure molding mode to enable the hot melt adhesive to flow in the C-shaped flow channel, so as to tightly adhere and coat the air electrode and the edge of the isolating membrane, and after the hot melt adhesive is cooled and solidified, a ring-shaped hot melt adhesive layer which has elasticity and viscosity and tightly presses the air electrode is formed to block the leakage of liquid in the battery.

In order to solve the problem of the conventional air battery that the composition of the electrolyte gradually changes and the output becomes unstable due to the recycling of the electrolyte, US 10020551B 2 proposes a liquid injection type air battery (C1) comprising an electrode structure (a) including an air electrode (1) and a metal negative electrode (2), a battery container (8) capable of holding the electrode structure (a) and the electrolyte (4), a supply tank (5) for supplying the electrolyte (4) to the battery container (8), a discharge tank (6) for discharging the electrolyte (4) from the battery container (8), and pumps (11A, 11B) as electrolyte circulation means for circulating the electrolyte (4) through a path from the supply tank (5) to the discharge tank (6) via the battery container (8), whereby the composition of the electrolyte (4) supplied to the battery container (8) can be made constant, and stable output power is obtained.

US09337469B2 provides a liquid-filled air battery, a liquid-filled air battery pack, and a method of using a liquid-filled air battery or a liquid-filled air battery pack that can be reduced in size. The liquid injection type air battery is provided with: the electrode structure includes a positive electrode and a negative electrode, and a space serving as both a liquid holding part for holding a liquid constituting an electrolyte of the air battery before injection and a gas circulating part for circulating an oxygen-containing gas forming an active material of the air battery after injection. The liquid injection type air battery pack has a plurality of the above liquid injection type air batteries. In a method of using a liquid-injection type air battery or a liquid-injection type air battery cell, a liquid holding portion for holding a liquid for constituting an electrolyte of the air battery before liquid injection is supplied to an electrode structure, and then, when the liquid in the liquid holding portion reaches a predetermined amount, an oxygen-containing gas is supplied to the liquid holding portion serving also as a gas flow portion through which an oxygen-containing gas for forming an active material of the air battery flows.

CN105609898A discloses an air battery, which comprises a battery body including a positive comprehensive reaction body and a negative comprehensive reaction body, wherein the positive comprehensive reaction body and the negative comprehensive reaction body are tightly connected through an air electrode sheet and a sealing ring; the battery facilitates the connection between the battery electrodes, not only serves as a current conductor, but also serves as a working chamber for fuel metal reaction, can conveniently and quickly fill fuel metal, takes out fuel metal oxide, connects the electrodes in series, seals electrolyte, discharges, collects and separates the fuel metal oxide, meets the technical problems of oxygen and air reaction demand and the like, does not need to return to a factory to disassemble and replace the fuel metal in a certain period, is reassembled to greatly increase the power generation capacity of the fuel battery, and also enables the air battery to leave the predicament of one-time use.

CN106898845 discloses a metal/air battery system, which includes a metal/air battery pack, a liquid pump, a heat exchanger and a liquid storage unit; a liquid inlet of the liquid pump is connected with the liquid storage unit, a liquid outlet of the liquid pump is connected with a liquid inlet of the heat exchanger, and a liquid outlet of the heat exchanger is connected with an electrolyte injection port of the metal/air battery pack; an electrolyte outlet of the metal/air battery pack is connected with the liquid storage unit to form a closed loop; the liquid storage unit is internally provided with a separation part; when the separating component is closed, the interior of the liquid storage unit is separated into two independent sealed cavities. Compared with the prior art, the metal/air battery has the advantages that the battery is easy to start, the liquid storage unit integrates multiple functions of raw material storage, electrolyte preparation, electrolyte storage and the like, and the liquid storage unit is particularly suitable for rapidly preparing the electrolyte in a low-temperature environment, prevents the loss of solution heat, is favorable for heating a battery system and promotes the battery to start.

Although the prior art and the existing market have a plurality of metal-air battery products, most metal-air batteries have some defects and defects, for example, the shape is mostly rectangular box-shaped, and in order to prolong the discharge time and improve the endurance capacity of the battery, the volume of an electrolysis chamber is generally increased, which greatly reduces the portability of the battery; in addition, the battery injection mode in the prior art is complex, the electrolyte is difficult to communicate with the anode and the cathode sometimes, and danger is easy to occur during injection. Therefore, it is necessary to develop a metal-air battery and a liquid injection method thereof, which are portable and safe in operation.

Disclosure of Invention

The invention provides a metal-air battery and a liquid injection method thereof, which aim at various problems of the metal-air battery in application and take the portability and the easy operability of the battery as the starting points.

The metal-air battery mainly comprises an air cathode, a metal anode, an upper auxiliary support, a liquid storage device, a lower auxiliary support, a positive electrode pole, a negative electrode pole and a thermoplastic film; the upper end and the lower end of the air cathode are fixed on the outer side surfaces of the steps of the upper auxiliary support and the lower auxiliary support; the metal anode is positioned in a columnar cavity formed by the air cathode and the auxiliary support; an annular chamber is formed between the metal anode and the air cathode and is used for containing electrolyte; the liquid storage device is positioned between the metal anode and the upper auxiliary support and used for storing electrolyte; the positive and negative electrode posts are arranged at the end face positions of the upper and lower auxiliary supports.

In some preferred embodiments, the air cathode is formed by rolling the catalyst layer, the current collector and the waterproof diffusion layer; the upper end and the lower end of the inner side of the air cathode are fixed on the outer side surfaces of the steps of the upper auxiliary device and the lower auxiliary device in a surrounding manner; and a current collector is reserved at the lower end part of the air cathode and is fixed to the end face of the lower step of the lower auxiliary device for being connected and fixed with the anode pole. The current collector used in the invention is metal nickel, copper nickel plating and relevant metal with good corrosion resistance and conductivity. The connection mode of the current collector and the positive pole in the invention includes but is not limited to riveting, welding and bolting.

In some preferred embodiments, the metal anode is positioned in a cylindrical cavity consisting of an air cathode and upper and lower auxiliary supports; the upper end surface and the lower end surface of the metal anode are provided with cylindrical holes, and the upper end surface is provided with steps; the metal anode can be a solid cylinder or a hollow cylinder; the metal anode material is magnesium and magnesium alloy, zinc and zinc alloy, aluminum and aluminum alloy.

In some preferred embodiments, the electrolyte is sealed in the liquid storage device in advance; the electrolyte is typically a neutral or alkaline electrolyte. The electrolyte used in the present invention includes, but is not limited to, a sodium chloride solution or a sodium hydroxide solution.

In some preferred embodiments, the liquid storage device is characterized by mainly comprising a wedge-shaped elastic sheet, a pressure spring, a sliding sleeve, a waterproof sealing membrane and a liquid storage base; the liquid storage base is provided with a sleeve and is matched and fixed with the cathode pole; the liquid storage base is provided with a spring plate support, and a pressure spring is arranged in the support; the wedge-shaped elastic sheet is closed with the liquid storage base through the pressure spring to form a liquid storage cavity; the center of the wedge-shaped elastic sheet is connected with a sliding sleeve, and the sliding sleeve can move up and down on the base sleeve. The opening mode of the liquid storage cavity is a pressing mode, and both a rotating mode and a lifting mode can be used for the opening mode of the liquid storage cavity.

In some preferred embodiments, the upper auxiliary support and the lower auxiliary support are both cylindrical with stepped faces; the lower end of the upper auxiliary support is provided with a step surface for fixing and sealing an air cathode; the support center is provided with a through hole for passing through the cathode pole, the sleeve and the sliding sleeve; the lower auxiliary support is provided with an upper step and a lower step, the upper step is used for fixing and sealing the air cathode, and the end face of the upper step is provided with a cylinder for supporting the bottom of the metal anode; the lower step end face is used for fixing the current collector and the positive pole.

In some preferred embodiments, the positive electrode post is connected with a current collector fixed at the lower auxiliary support; the negative pole post is connected with the center of the metal cylinder and reaches the position of a center hole reserved on the upper auxiliary support through a center hole reserved on the liquid storage device.

In some preferred embodiments, the thermoplastic film covers the outside of the cylindrical battery, only the positions of the positive and negative electrode posts are reserved, and the overlapped part of the thermoplastic film and the air cathode is reserved for facilitating the opening trace.

In addition, the invention also provides a liquid injection method of the metal-air battery, which is characterized by comprising the following steps:

(1) winding and adhering the inner side of the lower end of the air cathode to the outer side surface of the upper step of the lower auxiliary support, and fixing a current collector reserved by the air cathode to the end surface of the lower step of the lower auxiliary support to be connected and fixed with the positive pole;

(2) fixing a cathode pole to the central hole position of the upper end face of the metal anode, and attaching and fixing a base of the liquid storage cavity to the upper step end face of the metal anode through a sleeve and the cathode pole;

(3) the pressure spring is installed into the elastic sheet support on the liquid storage cavity to be fixed, then the spring is fixedly connected inside the wedge-shaped elastic sheet, and the four wedge-shaped elastic sheets are connected through the waterproof sealing film.

(4) At the moment, the wedge-shaped elastic sheets are arranged below the left side and the right side of the pressure spring, the outer circle surfaces of the wedge-shaped elastic sheets are attached to the outer end surfaces of the liquid storage cavity, electrolyte is injected at the moment, and the sliding sleeve is connected to the center of the wedge-shaped elastic sheets;

(5) the inner side of the upper end of the air cathode and the side face of the lower step of the upper auxiliary support are fixedly bonded, and meanwhile, the air cathode passes through a cathode pole column at the central hole, a sleeve and a sliding sleeve;

(6) the outside of the assembled battery is packed and fixed by a thermoplastic film, and the part of the thermoplastic film for wrapping the air cathode is provided with a trace convenient to tear;

(7) when the battery is used, the thermoplastic film at the air cathode position is torn, the sliding sleeve is pressed down, the wedge-shaped elastic sheet connected with the sliding sleeve is opened, the electrolyte flows into the cavity between the metal anode and the air cathode, and the battery starts to work.

Advantageous effects

The metal-air battery has the advantages that the structure design is ingenious, the connection of the metal anode, the air cathode and the liquid storage cavity is tight, and the space is not occupied; the stock solution chamber comprises wedge shell fragment, sliding sleeve, compression spring, waterproof seal membrane and stock solution base, and during the use, easy and simple to handle and safety only need just can the automatic start annotate the liquid through operating the sliding sleeve, and battery positive pole and negative pole intercommunication just can work. Compared with the metal-air battery in the prior art, the design of the invention greatly solves the problems of difficult portability, complex liquid injection and unsafe in the prior art in structure, occupied space and liquid injection mode.

Drawings

The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic structural diagram of a metal-air battery and a liquid injection method thereof before use in an embodiment of the invention

FIG. 2 is a schematic structural diagram of a metal-air battery and a liquid injection method thereof according to an embodiment of the present invention

FIG. 3 is a top view of a metal-air battery and a liquid injection method and a liquid storage device thereof according to an embodiment of the invention

Wherein: 1. an air cathode; 2. a metal anode; 3. a lower auxiliary support; 4. a current collector; 5. a positive pole column; 6. an upper auxiliary support; 7. a wedge-shaped spring plate; 8. a pressure spring; 9. a liquid storage base; 10. a thermoplastic film; 11. a sliding sleeve; 12 cathode pole column; 13. the elastic sheet supports; 14. waterproof sealing film

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar modules or modules having the same or similar functionality throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description herein, references to the description of "one embodiment," "another embodiment," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment is included in at least one embodiment of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

The embodiment of the invention provides a metal-air battery and a liquid injection method thereof, and the metal-air battery comprises an air cathode 1, a metal anode 2, an upper auxiliary support 6, a lower auxiliary support 3, a pressure spring 8, a wedge-shaped elastic sheet 7, a sliding sleeve 11, a positive pole post 5, a negative pole post 12 and a thermoplastic film 10, as shown in figure 1.

Specifically, the air cathode 1 is a rectangle formed by rolling a catalytic layer, a current collecting layer and a waterproof diffusion layer; the air cathode 1 is fixedly bonded with the supporting surfaces of the auxiliary ends of the upper auxiliary support 6 and the lower auxiliary support 3 in a surrounding mode; the lower end of the cathode is bonded and fixed at the side surface of the lower auxiliary support 3; the upper end of the air cathode 1 is bonded to the side surface of the upper auxiliary support; and a current collector 4 is reserved at one end of the air cathode 1 and is fixed at the step of the end face of the lower auxiliary support 3.

Specifically, the upper end face and the lower end face of the metal anode 2 are provided with cylindrical central holes; the lower end hole is superposed with the bulge of the lower auxiliary support 3 and is used for fixing the centering anode metal; the upper end hole is used for fixing the cathode pole 12. The upper end face of the metal anode is provided with a step for fixing the base 9 of the liquid storage cavity.

Specifically, the liquid storage device consists of a pressure spring 8, a wedge-shaped elastic sheet 7, a sliding sleeve 11, a waterproof sealing membrane 14 and a liquid storage base 9 fixed on anode metal. The liquid storage base 9 is provided with a central sleeve, an elastic sheet support 13 and a bottom end face; the central sleeve is fixed on the cathode pole 12, and the bottom end face is fixed with the anode metal step; four arc-shaped elastic sheets 7 are arranged on the end surface of the bottom for supporting; the elastic piece support 13 is internally provided with a pressure spring 8, and the pressure spring 8 is connected with the wedge-shaped elastic piece 7 and used for pre-tightening the wedge-shaped elastic piece 7. The wedge-shaped elastic sheet is divided into four fan-shaped parts, and the four parts are composed of waterproof sealing films 14. The center end of the wedge-shaped elastic sheet 7 is fixed on the center sleeve through a sliding sleeve, and the outer circle end and the bottom are attached to the side face of the bottom under the action of the pressure spring 8 to form a liquid storage cavity.

Specifically, the upper auxiliary support 6 and the lower auxiliary support 3 are respectively provided with stepped cylinders. The upper auxiliary support is provided with a central hole, and the cathode pole 12, the base sleeve 9 and the sliding sleeve 11 are overlapped and pass through the central hole; the step side section of the upper auxiliary support 6 is fixedly bonded with the inner side of the upper end of the air cathode 1. The end face of the lower auxiliary support 3 is provided with two steps, and the end face of the upper step is fixedly bonded with the inner side end of the lower part of the air cathode 1; the air cathode current collector 4 is fixed on the end face of the lower step and is connected with the anode pole 5 fixed on the end face of the lower step. And the upper end surface is provided with a raised cylinder for centering the position of the metal anode 2.

Specifically, the thermoplastic film 10 is coated on the whole battery, leaving only the upper 12 negative electrode post and the lower 5 positive electrode post positions. The thermoplastic film at the area of the wrapped air cathode 1 is left with a tear-facilitating mark.

The use and working mode of a metal-air battery in the embodiment of the invention is used according to the following method:

(1) as shown in fig. 1, before use, a certain amount of electrolyte is stored in the liquid storage chamber, under the action of a pressure spring 8, the bottom surface of the outer circle of the wedge-shaped spring 7 is attached to and sealed with the side surface of the liquid storage base 9, and the liquid storage chamber is in a sealed state;

(2) as shown in fig. 2, when the battery is used, the sliding sleeve 11 is pressed down, the center of the wedge-shaped elastic sheet 7 moves downwards under the action of the sliding sleeve, the middle part of the wedge-shaped elastic sheet 7 takes the elastic sheet support 13 as a fulcrum, the pressure spring 8 is tensioned, the outer end of the wedge-shaped elastic sheet 7 is opened, at the moment, the electrolyte flows into a chamber formed between the air cathode 1 and the metal anode 2, and the battery starts to work.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.