CN218677366U

CN218677366U - Battery cell, battery and electronic equipment

Info

Publication number: CN218677366U
Application number: CN202222832994.6U
Authority: CN
Inventors: 白燕; 张绪武
Original assignee: Zhuhai Cosmx Battery Co Ltd
Current assignee: Zhuhai Cosmx Battery Co Ltd
Priority date: 2022-10-26
Filing date: 2022-10-26
Publication date: 2023-03-21
Anticipated expiration: 2032-10-26

Abstract

The utility model provides an electricity core, battery and electronic equipment, electricity core includes first portion and second portion, the first portion with be the setting of target angle between the second portion, just the first portion with the turning portion position of second portion has the recess, the recess intussuseption is filled with the colloid that is the coagulation condition. Through setting up the colloid in the recess at electric core bight position, under the condition that the aluminium leaks appears in the plastic-aluminum membrane that the recess corresponds the position, the colloid in the recess can block the invasion of debris, reduces the condition of the inside short circuit of electric core to, the colloid can be fixed and support the electric core at turning both sides position, reduces the turning both sides and receives to drag and tear the condition, thereby promotes the security of battery.

Description

Battery cell, battery and electronic equipment

Technical Field

The utility model relates to a battery technology field especially relates to an electricity core, battery and electronic equipment.

Background

In order to meet the requirement of space utilization rate of electronic products, a special-shaped battery bin is provided, so that special-shaped batteries are needed.

The conventional special-shaped battery usually has corners, the corners are difficult to cover by gummed paper, aluminum leakage is easy to occur, and the safety of the battery is affected by tearing the two sides of the corners of the battery due to the fact that the two sides of the battery are pulled and torn easily.

It can be seen that the battery in the prior art has the problem of poor safety.

SUMMERY OF THE UTILITY MODEL

An embodiment of the utility model provides an electricity core, battery and electronic equipment to solve the relatively poor problem of battery security among the prior art.

An embodiment of the utility model provides an electric core, including first portion and second portion, the first portion with be the setting of target angle between the second portion, just the first portion with the turning portion position of second portion has the recess, the recess intussuseption is filled with the colloid that is the coagulation condition.

Optionally, the groove is a circular arc groove.

Optionally, the gel is a liquid gel.

The embodiment of the utility model provides a battery is still provided, including membrane shell and foretell electric core, the membrane shell with electric core adaptation, electric core sets up in the membrane shell, the corner position of membrane shell with the recess of electric core sets up relatively.

Optionally, the inner side wall of the corner part of the membrane shell is provided with a glue layer in a solidified state.

Optionally, the colloid fills a space formed by the corner of the film shell and the groove of the battery cell.

Optionally, the volume of the colloid is greater than or equal to one half of a space enclosed by the corner part of the film shell and the groove of the battery cell.

Optionally, the adhesive force between the colloid and the outer surface of the battery cell is greater than or equal to 0.15N/mm.

Optionally, the adhesive force between the adhesive layer and the inner surface of the membrane shell is greater than or equal to 0.15N/mm.

The embodiment of the utility model provides an electronic equipment is still provided, including foretell battery.

The embodiment of the utility model provides an in, through set up the colloid in the recess at electric core bight position, under the condition that the aluminium leaks appears in the plastic-aluminum membrane that the recess corresponds the position, the colloid in the recess can block the invasion of debris, reduces the condition of the inside short circuit of electric core to, the colloid can be fixed and support the electric core at turning both sides position, reduces turning both sides and receives to pull and the tearing condition, thereby promotes the security of battery.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.

Fig. 1 is a schematic structural diagram of a battery according to an embodiment of the present invention;

fig. 2 is a second schematic structural diagram of a battery according to an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all 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 efforts belong to the protection scope of the present invention.

The terms "first," "second," and the like in the description and in the claims, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It will be understood that the structures so used are interchangeable under appropriate circumstances such that embodiments of the invention can be practiced in sequences other than those illustrated or described herein, and the terms "first," "second," and the like are generally used herein in a generic sense without limitation to the number of terms, e.g., the first term can be one, or more than one.

In this embodiment, through set up the colloid in the recess at electric core bight position, under the condition that the aluminium leaks appears in the plastic-aluminum membrane that the recess corresponds the position, the colloid in the recess can block the invasion of debris, reduces the condition of the inside short circuit of electric core to, the colloid can be fixed and support the electric core at turning both sides position, reduces the turning both sides and receives to pull and the tearing condition, thereby promotes the security of battery.

In an example, the first portion and the second portion may be an integral structure, and the electrode sheets may be arranged and then cut, or a plurality of electrode sheets may be arranged and then cut to form a battery cell having the first portion and the second portion, wherein the tab is arranged at one end of the first portion, the other end of the first portion and the second portion are arranged at a target angle, the target angle may be 0 to 180 degrees, and when the target angle between the first portion and the second portion is 0 degree or 180 degrees, the structure of the battery cell is the same as that of a battery cell in the prior art. In this example, the purpose angle between the first portion and the second portion of electric core is 90 degrees to set up the recess in the corner position of first portion and second portion, set up the colloid through the mode of gluing in the recess, can block the invasion of debris through the colloid in the recess, reduce the condition of the inside short circuit of electric core, and, the colloid can be fixed and support the electric core of corner both sides position, reduces the corner both sides and receives to pull and tear the condition, has promoted the security of battery.

It should be noted that the target angle may also be 30 degrees, 60 degrees, 75 degrees, 120 degrees, 160 degrees, or the like according to the size of the battery compartment, so as to adapt to battery compartments with different structures, thereby improving the space utilization rate.

In some optional embodiments, the colloid may be a liquid colloid, such as a flowing adhesive, and the colloid is solidified and shaped by heating the liquid colloid, moisture, air drying, illumination, gelling reaction and other means, so that the formed colloid is in a solidified state, thereby reducing the difficulty of arranging the colloid in the groove, improving the coverage and stability of the colloid, and reducing the condition of colloid shedding.

The colloid can comprise a mixture of organic matters and inorganic matters, and the inorganic matters can comprise r-AlOOH, caSiO4, caSiO3, baSO4 and Al2O3 so as to improve the fixing and supporting functions of the colloid.

In some optional embodiments, the groove may be a circular arc groove, so as to reduce the occurrence of lithium deposition at a corner portion of the battery cell, and improve the safety of the battery.

The embodiment of the utility model provides a battery is still provided, as shown in fig. 1 to fig. 2, including membrane shell and electric core 1, membrane shell and 1 adaptation of electric core, electric core 1 sets up in the membrane shell, the corner position of membrane shell sets up with the recess 11 of electric core 1 relatively.

In this embodiment, set up electric core 1 in the membrane shell rather than shape adaptation, and the turning of membrane shell sets up with the recess 11 of electric core 1 relatively, sets up colloid 12 in the space that the corner position of membrane shell and recess 11 enclosed and close the formation, in order to reduce membrane shell corner position hourglass aluminium, and lead to the condition of electric core short circuit, and colloid 12 can be fixed, support electric core and membrane shell, reduce the corner both sides and receive to pull and tear the condition, thereby promote the security of battery. Wherein, the membrane shell can be an aluminum plastic membrane.

In some alternative embodiments, an inner sidewall of a corner portion of the film case has a glue layer in a solidified state. Can bond each other between glue film and colloid 12, the glue film can be liquid glue, for example the binder that flows, through heating liquid glue, the moisture air-dries, the illumination, means solidification such as gelling reaction are stereotyped, the glue film that is the solidification state that forms has reduced the degree of difficulty that sets up the glue film at the inside wall of membrane shell turning position, has promoted the coverage and the stability of glue film, reduces the condition that the glue film drops.

Wherein, the glue film with the adhesive force more than or equal to 0.15N/mm between the internal surface of membrane shell to promote the stability that glue film and membrane shell are connected, reduce the condition that the glue film drops from the membrane shell.

In other alternative embodiments, the colloid 12 fills the space formed by the corner of the film shell and the groove 11 of the battery cell 1.

In one example, two folded edges N1 and N2 at a corner part of the battery can intersect at an intersection point a, a groove 11 is formed at the corner part of the battery cell 1, and the groove 11 can play a certain buffering role when two sides of the corner are pulled, so that the battery cell is prevented from being broken; the cross-sectional area of the space formed by enclosing the corner part of the film shell and the groove 11 is S1, the area is covered by the colloid 12 from the intersection point A, the covered area can be S2, and under the condition that S1 is equal to S2, the colloid 12 is filled in the space formed by enclosing the corner part of the film shell and the groove 11 of the battery cell 1, so that aluminum leakage at the corner part of the film shell is reduced, the stability of fixing the colloid 12 and the film shell and the stability of fixing the colloid 12 and the battery cell 1 are enhanced, and the condition that two sides of the corner are torn due to pulling is reduced, thereby improving the safety of the battery.

In another example, the volume of the colloid 12 is greater than or equal to one half of the space enclosed by the corner part of the film shell and the groove 11 of the battery cell 1, in other words, S2 is not less than 0.5 × S1 and not more than S1, so that the surface of the intersection point a is covered by the colloid to avoid aluminum leakage, and meanwhile, the colloid 12 can be fixed with the two folding edges N1 and N2 to reduce the tearing of the battery when the battery falls.

Wherein, the adhesive force between the colloid 12 and the outer surface of the battery cell 1 is more than or equal to 0.15N/mm, so as to improve the stability of the connection between the colloid 12 and the groove 11 of the battery cell 1 and reduce the falling off of the colloid 12 from the groove 11.

Wherein, fig. 2 can be a cross-sectional view B in the thickness direction of the intersection point a, the colloid 12 is disposed in the space enclosed by the corner part of the membrane shell and the groove 11, and extends along the adjacent thickness direction, and the extension length L2 and the thickness L4 of the groove 11 satisfy the following relationship: l2 is more than or equal to 0 and less than or equal to 0.L4 x 0.8; the thickness L1 of the colloid 12 on the surface of the groove 11 can be 1 micron to 100 microns; thickness L3 can be less than 50 microns in the adjacent thickness direction to block the invasion of debris, reduce the condition of the inside short circuit of electric core, and, colloid 12 can fix and support the electric core at turning both sides position, reduce the turning both sides and receive to drag and tear the condition, thereby promote the security of battery.

It should be noted that the electronic device may be a notebook computer, a smart phone, or the like, and is not limited herein. The implementation manner of the embodiment of the battery is also applicable to the embodiment of the electronic device, and can achieve the same technical effect, which is not described herein again.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising a … …" does not exclude the presence of another identical element in a process, method, article, or apparatus that comprises the element. Furthermore, it should be noted that the scope of the methods and apparatus of the embodiments of the present invention is not limited to performing functions in the order discussed, but may include performing functions in a substantially simultaneous manner or in a reverse order based on the functions involved, e.g., the methods described may be performed in an order different than that described, and various steps may be added, omitted, or combined. In addition, features described with reference to certain examples may be combined in other examples.

The embodiments of the present invention have been described with reference to the accompanying drawings, but the present invention is not limited to the above-mentioned embodiments, which are only illustrative and not restrictive, and those skilled in the art can make many forms without departing from the spirit and scope of the present invention.

Claims

1. The battery cell is characterized by comprising a first part and a second part, wherein the first part and the second part are arranged at a target angle, grooves are formed in corner parts of the first part and the second part, and colloid in a solidified state is filled in the grooves.

2. The electrical core of claim 1, wherein the groove is an arc-shaped groove.

3. The electrical core of claim 1, wherein the gel is a liquid gel.

4. A battery comprising a film casing and the electrical core of any of claims 1 to 3, wherein the film casing is fitted to the electrical core, the electrical core is disposed in the film casing, and a corner portion of the film casing is disposed opposite to a groove of the electrical core.

5. The battery according to claim 4, wherein the inner side wall of the corner portion of the film case has a glue layer in a solidified state.

6. The battery of claim 4, wherein the gel fills a space defined by the corner portion of the film shell and the groove of the cell.

7. The battery of claim 4, wherein the volume of the gel is greater than or equal to one half of a space enclosed by the corner portion of the film shell and the groove of the cell.

8. The battery of claim 4, wherein the adhesive force between the gel and the outer surface of the cell is greater than or equal to 0.15N/mm.

9. The battery of claim 5, wherein the adhesive force between the glue layer and the inner surface of the membrane shell is 0.15N/mm or greater.

10. An electronic device characterized by comprising the battery according to any one of claims 4 to 9.