CN210006766U

CN210006766U - Non-crimping battery structure

Info

Publication number: CN210006766U
Application number: CN201920697549.9U
Authority: CN
Inventors: 童焰; 陈志勇
Original assignee: Guangdong Mic Power New Energy Co Ltd
Current assignee: Guangdong Mic Power New Energy Co Ltd
Priority date: 2019-05-15
Filing date: 2019-05-15
Publication date: 2020-01-31
Anticipated expiration: 2029-05-15

Abstract

The utility model discloses a non-turn-up battery structure is through setting up shell, sealing rubber ring and epitheca. In the practical application process, when the non-crimped cell needs to be packaged, the sealing rubber ring is sleeved in the annular table, the outer side wall of the sealing rubber ring is in tight contact with the annular table, the sealing rubber ring plays a role in sealing and water proofing, at the moment, the upper shell is pressed into the shell with force, so that the annular conical wall is in tight contact with the upper flanging, the annular side wall is in tight contact with the side wall, the two sealing rubber rings are mutually supported, the packaging operation is completed, and the packaging process is simple. When the internal pressure of the non-crimping battery structure is overlarge, the air pressure is greater than the jacking force between the annular side wall and the side wall, the upper shell is separated from the shell under the action of the air pressure, and the problem that the explosion battery electrolyte of the battery is sprayed due to the fact that the internal pressure of the battery is overlarge and cannot be subjected to timely pressure relief operation is effectively solved.

Description

Non-crimping battery structure

Technical Field

The utility model relates to a battery structure technical field especially relates to kinds of non-turn-up battery structures.

Background

Currently, a battery refers to a device that converts chemical energy into electrical energy in a portion of the space of a cup, tank, or other container or composite container that holds an electrolyte solution and metal electrodes to generate an electric current. Has a positive electrode and a negative electrode. With the advancement of technology, batteries generally refer to small devices, such as solar cells, that can generate electrical energy. The performance parameters of the battery are mainly electromotive force, capacity, specific energy and resistance. The battery is used as an energy source, can obtain current which has stable voltage and current, is stably supplied for a long time and is slightly influenced by the outside, has simple structure, convenient carrying, simple and easy charging and discharging operation, is not influenced by the outside climate and temperature, has stable and reliable performance, and plays a great role in various aspects of modern social life.

For the existing battery, the battery comprises a battery shell, a battery cover, a battery roll core and a sealing ring, wherein the battery roll core is arranged in the battery shell, the battery cover is arranged on the battery shell, the sealing ring is arranged between the battery shell and the battery cover, and the above components are sealed by using a curling sealing technology.

For example, the types of button batteries without crimping disclosed in chinese patent CN103814455B have strong sealing performance, but when the internal pressure of the button battery without crimping is too large, the battery cover cannot be separated from the battery cup, so that the button battery without crimping has a potential safety hazard due to the excessive internal pressure, and the problem that the battery explodes or the electrolyte of the battery erupts due to the abnormal pressure release caused by the excessive internal pressure.

If referring to the button-type lithium battery cell sealing structure disclosed in chinese patent CN107425145A, although the sealing performance is also strong, when the internal pressure of the button-type lithium battery cell sealing structure is too large, the battery cell cover cannot be separated from the battery cell shell, so that the button-type lithium battery cell sealing structure may generate a potential safety hazard due to the too large internal pressure, and the problem of explosion or spraying of the battery electrolyte of the battery due to the too large internal pressure cannot be normally relieved.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the weak point among the prior art, provide kinds and press when too big in the battery is inside, the epitheca can break away from in the shell smoothly, in time the non-turn-up battery structure that pressure release, factor of safety are high.

The purpose of the utility model is realized through the following technical scheme:

A non-crimped battery construction comprising:

the side wall of the opening end of the shell is inwards sunken to form an annular table;

the sealing rubber ring is sleeved in the annular table so that the outer side wall of the sealing rubber ring is in close contact with the annular table, and the sealing rubber ring comprises an upper flanging, a side wall and a lower flanging which are connected in sequence; and

the upper casing comprises an annular conical wall, an annular side wall and a cover body which are sequentially connected, the annular conical wall is in close contact with the upper flanging, the annular side wall is in close contact with the side wall and is mutually supported, and the cover body is used for sealing the opening end of the outer casing.

In embodiments, the annular platform comprises an upper landing, a side landing and a lower landing, the upper landing, the side landing and the lower landing are sequentially connected, an included angle of 120-150 ° is formed between the upper landing and end of the side landing, and an included angle of 90-150 ° is formed between the lower landing and another end of the side landing.

In of these embodiments, the upper landing forms an angle of 135 ° with the end of the side landing.

In of these embodiments, the lower landing forms a 90 ° angle with the other end of the side landing.

In of these embodiments, the upper landing, the side landing and the lower landing are -body formed structures.

In embodiments, the cover and the housing form a cell cavity therebetween, and the downward flange is located within the cell cavity.

In embodiments, the non-crimped battery structure further includes a battery jellyroll disposed within the battery cavity.

In embodiments, the battery roll core comprises a positive pole tab, a roll core and a negative pole tab, the roll core is arranged in the battery inner cavity, the positive pole tab respectively with the roll core and the cover body electrical connection, the negative pole tab respectively with the roll core and the shell electrical connection.

In embodiments, the winding core comprises a plurality of battery chips, and the battery chips are mutually stacked and wound or stacked to form the winding core.

In embodiments, the annular conical wall is provided with a projection.

The utility model discloses compare in prior art's advantage and beneficial effect as follows:

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural view of a non-crimped cell structure in an embodiment of the invention;

fig. 2 is an enlarged schematic view at a of fig. 1.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It is noted that when an element is referred to as being "secured to" another elements, it can be directly on the other elements or intervening elements may also be present, that when elements are referred to as being "connected" to another elements, it can be directly connected to another elements or intervening elements may be present.

The terminology used herein in the description of the present invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention, the terminology used herein "and/or" includes any and all combinations of or more of the associated listed items.

referring to fig. 1 and 2, non-crimped cell structures 10 include an outer casing 100, a sealing gasket 200, and an upper casing 300.

Thus, it should be noted that the outer shell 100 and the upper shell 300 both play a role of protection; the sealing rubber ring 200 plays a role in sealing and waterproofing.

Referring again to fig. 2, the sidewall of the housing 100 at the open end is recessed to form a ring platform 110.

Thus, it should be noted that the side wall of the outer shell 100 at the opening end is recessed inwards to form the annular table 110, and the annular table 110 plays a role of supporting and fixing the upper shell 300 in the transverse direction.

Referring to fig. 2 again, the sealing rubber ring 200 is sleeved in the annular table 110, so that the outer side wall of the sealing rubber ring 200 is in close contact with the annular table 110, and the sealing rubber ring 200 includes an upper flange 210, a side wall 220 and a lower flange 230 which are connected in sequence.

Therefore, it should be noted that the sealing rubber ring 200 plays a role in sealing and waterproofing, the sealing rubber ring 200 includes an upper flange 210, a side wall 220 and a lower flange 230 which are connected in sequence, and the upper flange 210, the side wall 220 and the lower flange 230 play a role in limiting and fixing the upper shell 300 together, so as to prevent the upper shell 300 from falling off from the housing 100 during the packaging operation.

Referring to fig. 2 again, the upper case 300 includes an annular tapered wall 310, an annular side wall 320 and a cover body 320 connected in sequence, the annular tapered wall 310 is in close contact with the upper flange 210, the annular side wall 320 is in close contact with the side wall 220, and the two are supported against each other, and the cover body 330 is used for closing the open end of the outer case 100.

Thus, it should be noted that, in the practical application process, when the non-crimped battery needs to be packaged, the sealing rubber ring 200 is sleeved in the annular table 110, so that the outer side wall of the sealing rubber ring 200 is in tight contact with the annular table 110, the sealing rubber ring 200 plays a role in sealing and waterproofing, at this time, the upper case 300 is pressed into the outer case 100 with force, so that the annular tapered wall 310 is in tight contact with the upper crimp 210, the annular side wall 310 is in tight contact with the side wall 220, and the two are mutually supported, thereby completing the packaging operation, the packaging process is simple.

Thus, it should be noted that the upper step 111 is used to tightly contact the upper flange 210, the side step 112 is used to tightly contact the side wall 220, and the lower step 113 is used to tightly contact the lower flange 230, so as to stably sleeve the sealing rubber ring 200 in the annular table 110, thereby improving the sealing and waterproof capabilities of the non-crimped battery structure 10.

Specifically, referring again to fig. 2, in the embodiment, the upper landing 111 forms an angle of 135 ° with the end of the side landing 112.

In this way, it should be noted that an included angle of 135 ° is formed between the ends of the upper step 111 and the side step 112, so that the upper step 111 can be tightly contacted with the upper flange 210 of the rubber gasket 200, and the upper case 300 can be stably fixed in the housing 100.

Specifically, referring again to fig. 2, in the embodiment, the lower ramp 113 forms an angle of 90 ° with the other end of the side ramp 112.

In this way, it should be noted that an included angle of 90 ° is formed between the lower step 113 and the other end of the side step 112, and when the downward flanging 230 of the sealing rubber ring 200 is in close contact with the lower step 113, if the internal pressure of the non-crimped battery structure 10 is too large to support the upper case 300 out of the housing 100, the downward flanging 230 will not be supported out along with the support of the upper case 300 under the limit of the lower step 113.

referring again to fig. 2, in the embodiment, the upper step 111, the side steps 112 and the lower step 113 are body-forming structures.

In this way, the upper landing 111, the side landing 112, and the lower landing 113 are formed by bodies, so that the overall mechanical strength of the annular landing 110 can be increased, and the service life of the annular landing 110 can be prolonged.

referring again to fig. 2, in the embodiment, a battery cavity is formed between the cover 330 and the housing 100, and the flange 230 is located in the battery cavity 400.

Thus, it should be noted that the battery chamber 400 is used for placing a battery.

, in the embodiment, the non-crimped battery structure 10 further includes a battery roll core disposed within the battery cavity 400.

As such, it should be noted that the battery roll core is used to supply electric power.

step by step, in the embodiment, the battery core comprises a positive electrode tab, a core and a negative electrode tab, the core is disposed in the battery cavity, the positive electrode tab is electrically connected to the core and the cover, and the negative electrode tab is electrically connected to the core and the housing.

Therefore, the positive electrode tab and the negative electrode tab both play a role in electric connection and are used for connecting external electric equipment; the winding core plays a role in power supply, and the voltage of the winding core is output to external electric equipment from the positive electrode lug.

It should be further noted that, due to the arrangement of the annular table 110, in addition to the function of supporting the upper case 300, the annular table 110 also plays a role of limiting the height of the upper case 300, and the annular table 110 effectively prevents the upper case 300 from directly making physical contact with the battery winding core due to excessive downward pressure during the packaging process of the upper case 300, thereby damaging the related structure of the battery winding core. For example, when the upper case 300 is pressed down too much, the upper case 300 directly comes into physical contact with the positive electrode tab or the negative electrode tab, and the positive electrode tab or the negative electrode tab is crushed.

, in embodiment, the winding core includes a plurality of battery chips, and each battery chip is stacked and wound on another to form the winding core.

As described above, in the present application, the winding core includes a plurality of battery chips, and the battery chips are stacked and wound or stacked to form the winding core.

, in the embodiment, the side wall of the housing 100 distal from the open end is provided with a radiused portion 120.

In this way, the rounded portion 120 can prevent the housing 100 from being damaged due to the large physical contact between the housing 100 and the external object.

, in the embodiment, the annular conical wall 310 is provided with protrusions 311.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

A non-crimped cell structure of , comprising:

the side wall of the opening end of the shell is inwards sunken to form an annular table;

the sealing rubber ring is sleeved in the annular table so that the outer side wall of the sealing rubber ring is in close contact with the annular table, and the sealing rubber ring comprises an upper flanging, a side wall and a lower flanging which are connected in sequence; and

the upper casing comprises an annular conical wall, an annular side wall and a cover body which are sequentially connected, the annular conical wall is in close contact with the upper flanging, the annular side wall is in close contact with the side wall and is mutually supported, and the cover body is used for sealing the opening end of the outer casing.
2. The non-crimped battery structure according to claim 1, wherein the annular step includes an upper step, a lateral step and a lower step, the upper step, the lateral step and the lower step are sequentially connected, and an included angle of 120 ° to 150 ° is formed between the upper step and ends of the lateral steps, and an included angle of 90 ° to 150 ° is formed between the lower step and the other ends of the lateral steps.
3. The non-crimped battery structure according to claim 2, wherein the upper landing forms an angle of 135 ° with the ends of the side landings.
4. The non-crimped battery structure according to claim 2, wherein the lower landing forms an angle of 90 ° with the other end of the side landing.
5. The non-crimped battery structure according to claim 2, wherein the upper landing, the side landing, and the lower landing are -body molded structures.
6. The non-crimped cell structure according to claim 1, wherein the cover and the housing define cell cavities therebetween, the downlap being located within the cell cavities.
7. The non-crimped battery structure according to claim 6, further comprising a battery jelly roll disposed within the battery cavity.
8. The non-crimped battery structure according to claim 7, wherein the battery roll core includes a positive electrode tab, a roll core, and a negative electrode tab, the roll core is disposed in the battery inner cavity, the positive electrode tab is electrically connected to the roll core and the cover body, respectively, and the negative electrode tab is electrically connected to the roll core and the case, respectively.
9. The non-crimped battery structure according to claim 8, wherein the jellyroll includes a plurality of battery cells that are wound on top of each other or stacked to form the jellyroll.
10. The non-crimped cell structure according to claim 1, wherein the annular conical wall is provided with a projection thereon.