CN204966607U

CN204966607U - Automatic chargeable button cell of adjustment type

Info

Publication number: CN204966607U
Application number: CN201520718117.3U
Authority: CN
Inventors: 王保军; 王伟; 张�林
Original assignee: YICHANG LIJIA TECHNOLOGY Co Ltd
Current assignee: YICHANG LIJIA TECHNOLOGY Co Ltd
Priority date: 2015-09-17
Filing date: 2015-09-17
Publication date: 2016-01-13
Anticipated expiration: 2025-09-17

Abstract

The utility model discloses an automatic chargeable button cell of adjustment type belongs to the battery preparation field, and it is including the negative pole lid that sets up from top to bottom, anodal lid for sealed negative pole lid, anodal lid make the sealed rubber ring who forms a confined space between anodal lid, the negative pole lid, from top to bottom set gradually in negative pole in the confined space, diaphragm, positive pole, the mass flow body, be equipped with a plurality of shell fragments between negative pole lid and the negative pole, it is a plurality of shell fragment homogeneous end is fixed in negative pole lid lower surface, the other end produce to support and press the elasticity of negative pole. The utility model discloses a set up the position relation of inside each part in the use of shell fragment adjustment battery, avoid the use in battery quality impaired, prolonged the life of battery.

Description

A kind of automatic adjustment Rechargeable button cell

Technical field

The utility model relates to field of cell preparation, is specifically related to a kind of automatic adjustment Rechargeable button cell.

Background technology

At present, so that it is small and exquisite, in some electronic products of extensive use, existing Rechargeable button cell generally comprises negative cover, positive cover, negative pole, positive pole, barrier film, collector to button cell, and negative pole generally adopts lithium-aluminium alloy to make, and during battery charging, positive pole can shrink, and during battery discharge, positive pole can expand, so repeatedly after charge and discharge cycles, will be there is subsiding to a certain degree in positive pole, thus cause producing space in battery, and the cycle life of Rechargeable button cell is reduced; In addition, also can produce the situation such as gas, positive pole expansion in battery use procedure, thus cause positive cover and negative cover to bear larger pressure, easily cause leakage on the one hand, add the danger that battery uses on the other hand.Above-mentioned situation all easily causes the compromised quality of battery, shortens its useful life.

Utility model content

The purpose of this utility model is to overcome above-mentioned technical deficiency, propose a kind of automatic adjustment Rechargeable button cell that can regulate cell internal components position, in solution prior art, in battery, easily generation space or internal volume increase and cause the technical problem of compromised quality.

For reaching above-mentioned technical purpose, the technical solution of the utility model provides a kind of automatic adjustment Rechargeable button cell, comprise negative cover setting up and down, positive cover, for sealing negative cover, positive cover make to be formed between positive cover, negative cover the O-ring seal of a seal cavity, be set in turn in the negative pole in described seal cavity, barrier film, positive pole, collector from top to bottom, be provided with multiple shell fragment between described negative cover and negative pole, described negative cover lower surface is fixed in multiple equal one end of described shell fragment, the other end produces the elastic force compressing described negative pole.

Preferably, be also provided with a pad between described shell fragment and described negative pole, described shell fragment opposing negative polarity one end presses on described pad.

Preferably, described shell fragment comprises that the body that an opposing negative polarity upper surface is obliquely installed is connected with described ontological idea of freedom end with one, the contact pressed on described pad.

Preferably, described contact is arc Contact piece, and the extrados of described arc Contact piece presses on described pad.

Preferably, multiple described shell fragment is arranged to ring-type symmetrically.

Preferably, the angle of inclination of described body opposing negative polarity upper surface is 30 ~ 45 °.

Preferably, described shell fragment is stainless steel.

Preferably, described pad is annular shim, and described annular shim is axially evenly arranged at multiple through hole.

Compared with prior art, the beneficial effects of the utility model comprise: by arranging a shell fragment between negative cover and negative pole, this shell fragment produces elastic force, when subsiding to a certain degree occurs positive pole, thus when causing producing space in battery, make to continue close contact between each parts, what keep between each parts is well conductance, and when producing gas or positive pole expands, due between negative cover and negative pole except shell fragment, yet forms both a gas storage space, this gas storage space can depot reaction produce gas, positive pole expands and then makes negative pole move upward extrusion elastic, shell fragment elastic deformation increases, and positive cover or negative cover can not be caused to be squeezed and to be out of shape.The utility model, by arranging the position relationship of inner each parts in the use procedure of shell fragment adjustment battery, is avoided battery quality in use procedure impaired, is extended the useful life of battery.

Accompanying drawing explanation

Fig. 1 be automatic adjustment Rechargeable button cell of the present utility model analyse and observe syndeton schematic diagram;

Fig. 2 is the partial enlarged drawing of Fig. 1 of the present utility model;

Fig. 3 is the shell fragment layout of automatic adjustment Rechargeable button cell of the present utility model;

Fig. 4 is the gasket construction schematic diagram figure of automatic adjustment Rechargeable button cell of the present utility model.

Embodiment

In order to make the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.

Embodiment of the present utility model provides a kind of automatic adjustment Rechargeable button cell, as shown in Fig. 1 ~ 4, comprise negative cover 1 setting up and down, positive cover 2, for sealing negative cover 1, positive cover 2 make to be formed between positive cover 2, negative cover 1 O-ring seal 3 of a seal cavity, be set in turn in the negative pole 4 in described seal cavity, barrier film 5, positive pole 6, collector 7 from top to bottom, be provided with multiple shell fragment 8 between described negative cover 1 and negative pole 4, all described negative cover 1 lower surface is fixed in one end to multiple described shell fragment 8, the other end produces the elastic force compressing described negative pole 4.In addition, the seal chamber 9 being used for filling electrolyte can be set between positive pole 6 sidewall and positive cover 2 inwall.

The present embodiment by arranging a shell fragment 8 between negative cover 1 and negative pole 4, this shell fragment 8 produces elastic force, when subsiding to a certain degree occurs positive pole 6, thus when causing producing space in battery, make to continue close contact between a parts, what keep between each parts is well conductance, and when producing gas or positive pole expands, due between negative cover 1 and negative pole 4 except shell fragment, yet forms both a gas storage space, this gas storage space can depot reaction produce gas, positive pole expands and then makes negative pole 4 move upward extrusion elastic 8, shell fragment 8 elastic deformation increases, and positive cover 2 or negative cover 1 can not be caused to be squeezed and to be out of shape.The utility model adjusts the position relationship of inner each parts in battery use procedure by arranging shell fragment 8, avoid battery quality in use procedure impaired, extend the useful life of battery.Shell fragment 8 one end of the present embodiment by laser electric welding in described negative cover 1, thus the clamping of the operation be convenient in production process and positive cover 2 and negative cover 1, sealing.

When specifically arranging, as shown in Figure 1, because lithium metal hardness is lower, move up and down in process for preventing negative pole 4 and worn and torn by shell fragment 8 free end, therefore between shell fragment 8 and described negative pole 4, be also provided with a pad 10, described shell fragment 8 opposing negative polarity 4 one end presses on described pad 10, and pad 10 can select to have certain degree of hardness, metal or alloy that the conductance general character is good makes, and the present embodiment is preferably stainless steel.In order to make pad 10 and negative pole 4 better fit, as shown in Figure 4, pad 10 can be set to ring-type, and on pad 10, axially multiple through hole be evenly set.

As shown in Figure 2, the shell fragment 8 of the present embodiment comprises the body 801 that opposing negative polarity 4 upper surface is obliquely installed and is connected with described body 801 free end with one, press on the contact 802 on described pad 10, body 801 and contact 802 are formed in one, for reducing the frictional force between contact 802 and pad 10, reduce the wearing and tearing of contact 802 and pad 10, described contact 802 can be set to arc Contact piece 802, the extrados of this arc Contact piece 802 presses on described pad 10, along with the change of body 801 relative resilient deformation, the upper and lower displacement of contact 802 opposing negative polarity lid 1, carry out the deflection of certain amplitude simultaneously, because contact 802 is arc Contact piece 802, move up and down arc Contact piece 802 extrados in process at contact 802 to remain and to contact with pad 10 is tangent, ensure that the conductance general character in use procedure.When specifically arranging, the angle of inclination of body 801 opposing negative polarity 4 upper surface can the factor such as elastic module, cell thickness, capacity as required be arranged, and, the small volume of button cell own, take up space for reducing shell fragment 8, therefore above-mentioned angle of inclination is traditionally arranged to be 30 ~ 45 °, the present embodiment is preferably 38 °.

As shown in Figure 3, the equal opposing negative polarity lid 1 of each described shell fragment 8 of the present embodiment is arranged radially on the lower surface of described negative cover 1, more balanced for making negative pole be subject to the overall elastic force of multiple shell fragment 8, multiple described shell fragment 8 can be arranged to ring-type symmetrically, thus prevent from causing each parts Contact area change because of discontinuity equalization, affect battery quality.

The present embodiment is in order to reduce the resistance between pad 10 and negative cover 1, and shell fragment 8 can be arranged good by pliability, that resistivity is low metal or alloy and make, the shell fragment 8 of the present embodiment is preferably stainless steel.

The above embodiment of the present utility model, does not form the restriction to the utility model protection range.Any various other made according to technical conceive of the present utility model change and distortion accordingly, all should be included in the protection range of the utility model claim.

Claims

1. an automatic adjustment Rechargeable button cell, comprise negative cover setting up and down, positive cover, for sealing negative cover, positive cover make to be formed between positive cover, negative cover the O-ring seal of a seal cavity, be set in turn in the negative pole in described seal cavity, barrier film, positive pole, collector from top to bottom, it is characterized in that, be provided with multiple shell fragment between described negative cover and negative pole, described negative cover lower surface is fixed in multiple equal one end of described shell fragment, the other end produces the elastic force compressing described negative pole.

2. Rechargeable button cell according to claim 1, is characterized in that, is also provided with a pad between described shell fragment and described negative pole, and described shell fragment opposing negative polarity one end presses on described pad.

3. Rechargeable button cell according to claim 2, is characterized in that, described shell fragment comprises that the body that an opposing negative polarity upper surface is obliquely installed is connected with described ontological idea of freedom end with one, the contact pressed on described pad.

4. Rechargeable button cell according to claim 3, is characterized in that, described contact is arc Contact piece, and the extrados of described arc Contact piece presses on described pad.

5., according to the arbitrary described Rechargeable button cell of claim 1 ~ 4, it is characterized in that, multiple described shell fragment is arranged to ring-type symmetrically.

6. the Rechargeable button cell according to claim 3 or 4, is characterized in that, the angle of inclination of described body opposing negative polarity upper surface is 30 ~ 45 °.

7., according to the arbitrary described Rechargeable button cell of claim 1 ~ 4, it is characterized in that, described shell fragment is stainless steel.

8., according to the arbitrary described Rechargeable button cell of claim 2 ~ 4, it is characterized in that, described pad is annular shim, and described annular shim is axially evenly arranged at multiple through hole.