CN206250359U

CN206250359U - Zn-air button cell

Info

Publication number: CN206250359U
Application number: CN201621293615.9U
Authority: CN
Inventors: 孙法炯; 马方文
Original assignee: Zhuhai Power Battery Co Ltd
Current assignee: Zhuhai Power Battery Co Ltd
Priority date: 2016-11-29
Filing date: 2016-11-29
Publication date: 2017-06-13
Anticipated expiration: 2026-11-29

Abstract

The utility model discloses a kind of zn-air button cell, it is desirable to provide the zn-air button cell that a kind of simple structure, the internal resistance of cell are low and discharge capacity is big.The utility model includes inner cap（1）And with the inner cap（1）The shell of mutual cooperation（3）, located at the inner cap（1）And shell（3）Between insulation cushion rubber（2）, located at the insulation cushion rubber（2）Bottom and the shell（3）The air electrode of bottom interior surface, located at inner cap（1）With the paste mixture between the air electrode（4）And located at the shell（3）The passage of bottom（10）, the shell（3）Bottom interior surface apart from the shell（3）Bottom interior edge at a certain distance from be provided with annular protrusion（11）And in the annular protrusion（11）Wire netting is provided with the annular ring for being formed（5）.The utility model is applied to the technical field of air cell.

Description

Zn-air button cell

Technical field

The utility model is related to a kind of battery, more particularly to a kind of zn-air button cell.

Background technology

Zn-air button cell is widely used in the hearing assistance devices such as audiphone and cochlea, with the hair in epoch Exhibition, these hearing device functions are more and more, and its power consumption is also increasing, to support the use of these equipment, also require that zinc is empty The power output in pneumoelectric pond is also increasing.

In patent application CN03108863.5, its air electrode is, by inserting the wire netting of inside come conductive, and to lead to The inwall for crossing shell is drawn；The waterproof layer of the air electrode is nonconducting, and what is generally used is PTFE films.Although at the bottom of shell An inside annular protrusion is also deposited at portion edge, but is nonconducting, air electricity by contacting waterproof layer PTFE film with it Pole is different from air electrode structure of the invention, therefore scope be not discussed.

In Chinese patent CN2365765Y, its air electrode does not have wire netting, and its waterproof layer can be conductive, its system Make technique simpler, cost is also lower.But in order to take into account conduction, waterproof and ventilative performance, the conduction of the air electrode simultaneously Property is for requiring that more and more higher high power discharge performance is inadequate.Then the patent is placed on the thin gas between positive pole and shell Piece changes wire netting into improve electric conductivity, but due to not having pressure between net and positive pole, can not be carried at the electric discharge initial stage of battery The electric conductivity of air electrode high and shell.The need for additionally, due to sealing, the bending part in outer casing inner wall Yu bottom surface needs to add Appropriate fluid sealant, and this kind of general poorly conductive of fluid sealant, will be further increased air electrode and the contact resistance between it.

Utility model content

Technical problem to be solved in the utility model is to overcome the deficiencies in the prior art, there is provided a kind of simple structure, electricity The zn-air button cell that pond internal resistance is low and discharge capacity is big.

The technical scheme that the utility model is used is：The utility model include inner cap and with the inner cap cooperate Shell, the insulation cushion rubber between the inner cap and shell, located at it is described insulation cushion rubber bottom and table in the outer casing bottom The air electrode in face, the paste mixture located between inner cap and the air electrode and the passage located at the outer casing bottom, The bottom interior surface of the shell is provided with annular protrusion and described at a certain distance from the bottom interior edge apart from the shell Wire netting is provided with the annular ring that annular protrusion is formed.

Further, the air electrode include be in contact with the paste mixture barrier film, intermediate layer active layer and with The conductive water repellent layer that the inner surface of outer cover is in contact.

Further, fluid sealant, the insulation cushion rubber are provided between the outer casing bottom inward flange and the annular protrusion Barrier film is pushed down in bottom, and the inner cap of mutual cooperation, the shell and the insulation cushion rubber are realized to institute by mechanical clasps side State the sealing of battery.

Further, the paste mixture includes powdery zinc powder and electrolyte.

Further, the annular protrusion width is 0.2-1.0 millimeters；Highly it is 0.05-0.15 millimeters.

Further, the diameter of the annular protrusion peak is smaller than the envelope outer diameter 0.6-3.0 millimeters.

The beneficial effects of the utility model are：Because the utility model is including inner cap and outer with what the inner cap cooperated Shell, the insulation cushion rubber between the inner cap and shell, located at it is described insulation cushion rubber bottom and the outer casing bottom inner surface Air electrode, the paste mixture located between inner cap and the air electrode and the passage located at the outer casing bottom, institute The bottom interior surface for stating shell is provided with annular protrusion and in the ring at a certain distance from the bottom interior edge apart from the shell Be provided with wire netting in convex the formed annular ring of shape, so, the utility model when battery is operated conduction, due to the ring The raised effect of shape reduces the contact with the shell and the cooperation in the shell, the inner cap and the insulation cushion rubber is pressed It is lower to be in close contact with the quoit simultaneously, so not only reduce contact resistance but also increase the useful space of inside battery, this reality With new structure it is simple, the internal resistance of cell is small and discharge capacity is big.

Brief description of the drawings

Fig. 1 is internal structure schematic diagram of the present utility model；

Fig. 2 is the utility model internal structure close-up schematic view.

Specific embodiment

As depicted in figs. 1 and 2, in the present embodiment, the utility model includes inner cap 1 and is cooperated with the inner cap 1 Shell 3, the insulation cushion rubber 2 between the inner cap 1 and shell 3, located at it is described insulation the bottom of cushion rubber 2 and the shell 3 The air electrode of bottom interior surface, the paste mixture 4 located between inner cap 1 and the air electrode and located at the bottom of the shell 3 The passage 10 in portion, the bottom interior surface of the shell 3 is provided with ring at a certain distance from the bottom interior edge apart from the shell 3 Shape raised 11 and wire netting 5 is provided with the annular ring that the annular protrusion 11 is formed, the annular protrusion 11 can reduce institute The contact of air electrode and the shell 3 is stated, the internal resistance of cell and increase air circulation is reduced, discharge capacity is improve.

In the present embodiment, the air electrode includes that the barrier film 8, intermediate layer being in contact with the paste mixture 4 is lived Property layer 7 and be in contact with the inner surface of the shell 3 conductive water repellent layer 6；In the bottom interior edge of the shell 3 and the convex annular Fluid sealant 12 is provided between playing 11, barrier film 8, the inner cap 1 of mutual cooperation, the shell 3 are pushed down in insulation cushion rubber 2 bottom And the insulation cushion rubber 2 realizes the sealing to the battery by mechanical clasps side, can so increase the sealing of the battery.

In the present embodiment, the paste mixture 4 uses 0.7 gram of mercury less zinc powder, 35% 0.3 gram of potassium hydroxide solution, And 0.05 gram of Sodium Polyacrylate is mixed to form；The width of the annular protrusion 11 is 0.6 millimeter；Highly it is 0.1 millimeter；The annular The diameter of raised 11 peaks is smaller than the external diameter of the shell 3 1.6 millimeters.

The utility model is applied to the technical field of air cell.

Although embodiment of the present utility model is described with practical solution, do not constitute and the utility model is contained The limitation of justice, for those skilled in the art, the group according to this specification to the modification of its embodiment and with other schemes Conjunction will be apparent from.

Claims

1. a kind of zn-air button cell, including inner cap（1）And with the inner cap（1）The shell of mutual cooperation（3）, located at described Inner cap（1）And shell（3）Between insulation cushion rubber（2）, located at the insulation cushion rubber（2）Bottom and the shell（3）In bottom The air electrode on surface, located at inner cap（1）With the paste mixture between the air electrode（4）And located at the shell（3）Bottom The passage in portion（10）, it is characterised in that：The shell（3）Bottom interior surface apart from the shell（3）Bottom inner edge Annular protrusion is provided with a certain distance from edge（11）And in the annular protrusion（11）Wire netting is provided with the annular ring for being formed （5）.

2. zn-air button cell according to claim 1, it is characterised in that：The air electrode includes and the paste Mixture（4）The barrier film being in contact（8）, intermediate layer active layer（7）And with the shell（3）The conductive water repellent that inner surface is in contact Layer（6）.

3. zn-air button cell according to claim 2, it is characterised in that：In the shell（3）Bottom interior edge with The annular protrusion（11）Between be provided with fluid sealant（12）, the insulation cushion rubber（2）Push down barrier film in bottom（8）, mutual cooperation The inner cap（1）, the shell（3）And the insulation cushion rubber（2）The sealing to the battery is realized by mechanical clasps side.

4. zn-air button cell according to claim 3, it is characterised in that：The paste mixture（4）Including powdery Zinc powder and electrolyte.

5. zn-air button cell according to claim 1, it is characterised in that：The annular protrusion（11）Width is 0.2- 1.0 millimeters；Highly it is 0.05-0.15 millimeters.

6. zn-air button cell according to claim 1, it is characterised in that：The annular protrusion（11）Peak it is straight Footpath is than the shell（3）External diameter is small 0.6-3.0 millimeters.