CN218867238U - Aluminum shell and secondary battery - Google Patents

Abstract

The utility model discloses an aluminum shell and a secondary battery, wherein the aluminum shell comprises an aluminum shell body, the aluminum shell body is a hollow structure with an opening at the top, and the inner sides of two opposite side walls of the aluminum shell body are respectively provided with a limit structure at the position close to the opening at the top; the limiting structure inclines towards the direction close to the top end opening. The utility model discloses a position that is close to open-top respectively at two relative lateral walls of aluminum hull body sets up limit structure, and incline limit structure to the direction that is close to open-top, make the top cap can be spacing by limit structure and unlikely to be absorbed in the aluminum hull body when putting into the aluminum hull body with electric core together, and when the top cap needs to push down in order to adjust to the top parallel and level with the aluminum hull body, the limit structure of slope pushes down relatively easily, be convenient for the welding of aluminum hull body and top cap, the production yield and the operating efficiency of battery have been improved, higher market spreading value has.

Description

Aluminum shell and secondary battery

Technical Field

The utility model relates to a battery technology field especially relates to an aluminum hull and secondary battery.

Background

With the rapid growth of the market scale of electric vehicles, power battery enterprises also begin to develop vigorously, so that the production and demand scale of batteries is continuously enlarged.

At present, a square, a cylinder and a soft package are three main packaging modes of a power battery. Among them, square aluminum-can batteries occupy a large market. In the production process of the square aluminum-shell battery, the aluminum-shell battery cell 1 and the aluminum-shell top cover 2 are welded and then placed into the aluminum shell 3, and then the aluminum shell 3 and the aluminum-shell top cover 2 are hermetically welded. Because the welded aluminum shell battery cell 1 and the welded aluminum shell top cover 2 are directly placed into the aluminum shell 3, the aluminum shell top cover 2 sometimes sinks into the aluminum shell 3 completely, as shown in fig. 1, the aluminum shell 3 and the aluminum shell top cover 2 cannot be welded, and the reason for this may be that a gap is formed between the bottoms of the aluminum shell battery cell 1 and the aluminum shell 3 or the aluminum shell top cover 2 presses down a tab.

In order to solve the problem, the industry uses a plurality of improvement methods: when 3 productions of aluminum hull, the lateral wall punching press at its top goes out to extend and be the spacing arch 4 of right angle setting with the lateral wall to 3 inside of aluminum hull, as shown in fig. 2, when aluminium hull 3 is put into to welded aluminium hull electricity core 1 and aluminium hull top cap 2, this spacing arch 4 can prevent that aluminium hull top cap 2 from sinking into aluminium hull 3 completely to the welding of aluminium hull 3 and aluminium hull top cap 2 is convenient for. The drawbacks of this design are: when welding aluminum hull 3 and aluminum hull top cap 2, the operation requirement is the high needs parallel and level at the top of aluminum hull top cap 2 and aluminum hull 3 to guarantee welding quality, but the actual condition is, when aluminum hull top cap 2 was arranged in spacing arch 4 on, aluminum hull top cap 2 is not the parallel and level with the top of aluminum hull 3, and often aluminum hull top cap 2 is slightly high, just need press aluminum hull top cap 2 toward the inside of aluminum hull 3 this time, in order to press aluminum hull top cap 2 to the top parallel and level with aluminum hull 3. However, because the limiting protrusion 4 arranged at a right angle with the side wall has strong rigidity, the aluminum shell top cover 2 is not easy to press into the aluminum shell 3, so that the labor intensity is high, the time consumption is long, and the efficient line production is not facilitated.

Therefore, improvements in the prior art are needed.

The above information is given as background information only to aid in understanding the present disclosure, and no determination or admission is made as to whether any of the above is available as prior art against the present disclosure.

SUMMERY OF THE UTILITY MODEL

The utility model provides an aluminum hull and secondary battery to solve the not enough of prior art.

In order to achieve the above object, the present invention provides the following technical solutions:

in a first aspect, the present invention provides an aluminum shell, which includes an aluminum shell body 10, wherein the aluminum shell body 10 is a hollow structure with an opening at the top, and the positions of the inner sides of two opposite side walls 11 of the aluminum shell body 10, which are respectively close to the top opening, are provided with limiting structures 20;

the limiting structure 20 is inclined towards the direction close to the top end opening.

Further, in the aluminum shell, the limiting structure 20 is formed by stamping the side wall 11 from outside to inside.

Further, in the aluminum shell, the distance between the top of the limiting structure 20 and the top of the aluminum shell body 10 is equal to the thickness of the top cover 30.

Further, in the aluminum shell, at least two spacing structures 20 are formed on each side wall 11 at intervals.

Further, in the aluminum shell, the inclination angle of each limiting structure 20 is the same or different or partially the same.

Further, in the aluminum shell, the inclination angle of the limiting structure 20 is 90-180 °.

Further, in the aluminum shell, the limiting structure 20 is cylindrical or conical.

Further, in the aluminum shell, the protruding depth of the limiting structure 20 into the aluminum shell body 10 is greater than the thickness of the side wall 11 of the aluminum shell body 10.

Further, in the aluminum case, the depth of the limiting structure 20 protruding into the aluminum case body 10 is smaller than the distance between the battery cell 40 and the side wall 11 of the aluminum case body 10 when the battery cell 40 is placed into the aluminum case body 10.

In a second aspect, the present invention provides a secondary battery, which comprises a battery cell 40 and a casing for accommodating the battery cell 40, wherein the casing is an aluminum casing as described in the first aspect.

Compared with the prior art, the embodiment of the utility model provides a following beneficial effect has:

the embodiment of the utility model provides a pair of aluminum hull and secondary battery, set up limit structure through being close to open-top's position respectively at two lateral walls that the aluminum hull body is relative, and with limit structure to the slope of the direction that is close to open-top, make the top cap can be spacing and be unlikely to be absorbed in the aluminum hull body by limit structure when putting into the aluminum hull body with electric core together, and need push down in order to adjust to the top parallel and level with the aluminum hull body when the top cap, the limit structure of slope pushes down relatively easily, be convenient for the welding of aluminum hull body and top cap, the production yield and the operating efficiency of battery have been improved, have higher market spreading value.

Drawings

In order to illustrate the embodiments of the present invention or the technical solutions in the prior art more clearly, the drawings used in the description of the embodiments or the prior art will be briefly introduced, obviously, the drawings in the description below are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic diagram of a top cover of a square aluminum-casing battery in the prior art;

FIG. 2 is a schematic structural view of a prior art aluminum case with a right-angled limiting protrusion;

fig. 3 is a schematic front perspective structural view of an aluminum shell according to an embodiment of the present invention;

fig. 4 is a schematic side view of an aluminum shell according to an embodiment of the present invention;

fig. 5 is a schematic front perspective structural view of an aluminum shell according to an embodiment of the present invention.

Reference numerals:

the battery comprises an aluminum shell battery cell 1, an aluminum shell top cover 2, an aluminum shell 3 and a limiting bulge 4;

the battery comprises an aluminum shell body 10, a limiting structure 20, a top cover 30 and a battery cell 40;

a side wall 11.

Detailed Description

In order to make the objects, features and advantages of the present invention more obvious and understandable, the embodiments of the present invention are clearly and completely described with reference to the drawings in the embodiments of the present invention, and obviously, the embodiments described below are only some embodiments of the present invention, not all embodiments. Based on the embodiments of 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.

In the description of the present invention, it is to be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present.

Furthermore, the terms "long", "short", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are only for convenience of describing the present invention, but do not indicate or imply that the device or element referred to must have the specific orientation, operate in the specific orientation configuration, and thus, should not be construed as limiting the present invention.

The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.

Example one

In view of the above-mentioned defects of the conventional aluminum shell structure, the applicant of the present invention is based on the practical experience and professional knowledge that are abundant for many years in the design and manufacture of such products, and is engaged in the application of the theory to actively make research and innovation, so as to hopefully create a technology capable of solving the defects in the prior art, so that the aluminum shell structure has higher practicability. Through continuous research and design, and after repeated trial sample and improvement, the utility model discloses the practical value of utensil is established in the end.

Referring to fig. 3 to 5, an embodiment of the present invention provides an aluminum shell, including an aluminum shell body 10, where the aluminum shell body 10 is a hollow structure with an opening at the top, and the inner sides of two opposite side walls 11 of the aluminum shell body 10 respectively near the top opening are provided with a limiting structure 20;

the limiting structure 20 is inclined towards the direction close to the top end opening.

It should be noted that, the same as the limiting protrusion in the prior art, the limiting structure 20 interferes with the top cover 30 to prevent the top cover 30 from sinking into the aluminum shell body 10, but the difference between the two is that the limiting structure 20 in this embodiment is not arranged at a right angle with the side wall 11 of the aluminum shell body 10 like the limiting protrusion in the prior art, but is inclined towards the bottom direction close to the shell body 10, so that the rigidity of the top cover limiting portion 20 is reduced, the top cover 30 is pressed into the shell body 10 easily, the labor intensity is reduced, much time is not needed, and efficient flow process is facilitated.

In this embodiment, the forming manner of the limiting structure 20 may be various, as long as the limiting structure 20 can be protruded into the aluminum shell body 10 finally.

For example, the limiting structure 20 may be formed by punching the side wall 11 from the outside to the inside.

It should be noted that the embodiment is illustrated by a stamping method, and as can be seen from fig. 3 to 5, the limiting structure 20 is formed by stamping the outer side of the side wall 11 into the aluminum shell body 10.

In this embodiment, the distance between the top of the limiting structure 20 and the top of the aluminum casing body 10 is equal to the thickness of the top cover 30.

As shown in fig. 3 and 5, a distance between the top of the limiting structure 20 and the top of the aluminum casing body 10 is D2, and a thickness of the top cover 30 is D3, in this embodiment, D2= D3 is required, so as to balance heights of the top cover 30 and the aluminum casing body 10, so that the top cover 30 is flush with the height of the aluminum casing body 10 after entering the casing, and further facilitate subsequent welding of the aluminum casing body 10 and the top cover 20.

As shown in fig. 4, in the present embodiment, at least two spacing structures 20 are formed on each of the side walls 11.

Although the number of the limiting structures 20 is not limited, the limiting structures 20 are preferably horizontally arranged on the side wall 11. The number of the limiting structures 20 illustrated in fig. 4 is five.

In this embodiment, the inclination angle of each of the position-limiting structures 20 is the same or different or partially the same.

The inclination angle of each limiting structure 20 is 90-180 degrees.

It should be noted that the inclination angle of the limiting structure 20 refers to an angle at which the limiting structure 20 is inclined toward the top end opening, i.e., an angle θ as illustrated in fig. 3. The inclination angle of the limiting structure 20 can be arbitrarily selected within the angle range of 90-180 degrees.

In this embodiment, the limiting structure 20 is cylindrical or conical in shape.

Of course, what shape of the limiting structure 20 actually has little influence on the present embodiment, i.e. besides the above mentioned cylindrical shape and conical shape, the limiting structure may also have other shapes such as a hemispherical shape, an irregular shape, etc.

Referring to fig. 3 and 5 again, in this embodiment, the protruding depth of the limiting structure 20 into the aluminum casing body 10 is greater than the thickness of the side wall 11 of the aluminum casing body 10, and the protruding depth of the limiting structure 20 into the aluminum casing body 10 is smaller than the distance between the battery cell 40 and the side wall 11 of the aluminum casing body 10 when the battery cell 40 is placed into the aluminum casing body 10.

It should be noted that, although the depth of the limiting structure 20 protruding into the aluminum casing body 10 is no longer limited by the thickness of the sidewall 11 of the aluminum casing body 10 and can be made as deep as possible, it should be noted that the too-deep limiting structure 20 will affect the battery cell 40 entering the aluminum casing body 10, so that the depth D1 of the limiting structure 20 protruding into the aluminum casing body 10 is set to be smaller than the distance D4 between the battery cell 40 and the sidewall 11 of the aluminum casing body 10 when the battery cell 40 is placed into the aluminum casing body 10 in this embodiment.

Although the terms of aluminum housing body, limiting structure, top cover, battery cell, etc. are used more often herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention.

The embodiment of the utility model provides a pair of aluminum hull, the position that is close to open-top respectively through two lateral walls relative at the aluminum hull body sets up limit structure, and incline limit structure to the direction that is close to open-top, make the top cap can be spacing and unlikely to be absorbed in the aluminum hull body by limit structure when putting into the aluminum hull body with electric core together, and when the top cap need push down in order to adjust to the top parallel and level with the aluminum hull body, the limit structure of slope pushes down more easily, be convenient for the welding of aluminum hull body and top cap, the production yield and the operating efficiency of battery have been improved, higher market spreading value has.

Example two

The utility model provides a secondary battery, include electric core 40 and hold the casing of electric core 40, the casing is as above-mentioned embodiment one the aluminum hull.

It should be noted that the secondary battery further includes necessary component designs such as an electrolyte and an insulating sheet, and the specific function of the component designs is to ensure that each function of the secondary battery normally operates.

In addition, the secondary battery in the present embodiment may be applied to, but not limited to, electronic devices, electric vehicles, electric power storage systems, or the like. The electronic device may be, for example, various computers, mobile phones, display panels, and the like, which use a secondary battery as a driving power source. The electric vehicle may be, for example, an electric vehicle, an electric tricycle, an electric bicycle, or the like that uses a secondary battery as a driving power source. The electric power storage system may be, for example, an electric power storage system that uses a secondary battery as an electric power storage source.

In these electronic devices, the secondary battery may be electrically connected to the electric element to supply electric power to the electric element. Because the quick charge ability of the secondary battery that this application provided is comparatively excellent, be favorable to like this that electronic equipment is arranged in application scenes such as outdoor energy storage, short-time power reserve and removal energy storage to make electronic equipment's application scene more extensive.

The embodiment of the utility model provides a pair of secondary battery, it sets up limit structure to being close to open-top's position respectively through two lateral walls relative at the aluminum hull body, and incline limit structure to being close to open-top's direction, make the top cap can be spacing and unlikely to be absorbed in the aluminum hull body by limit structure when putting into the aluminum hull body with electric core together, and when the top cap need push down in order to adjust to the top parallel and level with the aluminum hull body, the limit structure of slope pushes down more easily, be convenient for the welding of aluminum hull body and top cap, the production yield and the operating efficiency of battery have been improved, higher market spreading value has.

In conclusion, upon reading the present detailed disclosure, those skilled in the art will appreciate that the foregoing detailed disclosure can be presented by way of example only, and not limitation. Those skilled in the art will appreciate that the present application is intended to cover various reasonable variations, adaptations, and modifications of the embodiments described herein, even though not expressly described herein. Such alterations, improvements, and modifications are intended to be suggested by this application and are within the spirit and scope of the exemplary embodiments of the application.

Furthermore, certain terminology has been used in this application to describe embodiments of the application. For example, "one embodiment," "an embodiment," and/or "some embodiments" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. Therefore, it is emphasized and should be appreciated that two or more references to "an embodiment" or "one embodiment" or "an alternative embodiment" in various portions of this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined as suitable in one or more embodiments of the application.

It should be appreciated that in the foregoing description of embodiments of the present application, various features are grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure aiding in the understanding of one feature. This is not to be taken as an exhaustive list, however, and it is well within the skill of the art to extract some of these features as individual embodiments when reading the present application. That is, embodiments in the present application may also be understood as an integration of multiple sub-embodiments. And each sub-embodiment described herein is equally applicable in less than all features of a single foregoing disclosed embodiment.

Each patent, patent application, publication of a patent application, and other material, such as articles, books, descriptions, publications, documents, articles, and the like, cited herein is hereby incorporated by reference. All matters hithertofore set forth herein except as related to any prosecution history, may be inconsistent or conflicting with this document or any prosecution history which may have a limiting effect on the broadest scope of the claims. Now or later associated with this document. For example, if there is any inconsistency or conflict in the description, definition, and/or use of terms associated with any of the included materials with respect to the terms, descriptions, definitions, and/or uses associated with this document, the terms in this document are used.

Finally, it should be understood that the embodiments of the application disclosed herein are illustrative of the principles of the embodiments of the present application. Other modified embodiments are also within the scope of the present application. Accordingly, the disclosed embodiments are presented by way of example only, and not limitation. Those skilled in the art can implement the present application in alternative configurations according to the embodiments of the present application. Thus, embodiments of the present application are not limited to those precisely described in the application.

Claims (10)

1. An aluminum shell comprises an aluminum shell body (10), wherein the aluminum shell body (10) is of a hollow structure with an opening at the top, and is characterized in that the inner sides of two opposite side walls (11) of the aluminum shell body (10) are respectively provided with a limiting structure (20) at the position close to the opening at the top;

the limiting structure (20) inclines towards the direction close to the top end opening.

2. The aluminum can according to claim 1, wherein the stopper structure (20) is stamped and formed from the side wall (11) from the outside to the inside.

3. The aluminum can of claim 1, wherein a distance between a top of the limiting structure (20) and a top of the aluminum can body (10) is equal to a thickness of a top cover (30).

4. The aluminum can as claimed in claim 1, wherein at least two spacing structures (20) are formed on each side wall (11).

5. The aluminum hull according to claim 4, characterized in that the angle of inclination of each of said limit structures (20) is the same or different or partly the same.

6. The aluminum hull according to claim 5, characterized in that the angle of inclination of the limiting structure (20) is 90 ° -180 °.

7. The aluminum shell according to claim 1, wherein the limiting structure (20) is cylindrical or conical in shape.

8. The aluminum vessel according to claim 1, wherein the depth of the limiting structure (20) protruding into the aluminum vessel body (10) is greater than the thickness of the side wall (11) of the aluminum vessel body (10).

9. The aluminum casing as recited in claim 8, wherein the depth of the limiting structure (20) protruding into the aluminum casing body (10) is smaller than the distance between the battery cell (40) and the side wall (11) of the aluminum casing body (10) when the battery cell (40) is placed into the aluminum casing body (10).

10. A secondary battery comprising a battery cell (40) and a casing accommodating the battery cell (40), characterized in that the casing is an aluminum casing according to any one of claims 1 to 9.

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