CN220492014U - Battery shell, battery and electric equipment - Google Patents

Abstract

The utility model belongs to the technical field of battery production and manufacturing, and particularly relates to a battery shell, a battery and electric equipment, wherein the battery shell comprises two sleeves with one end open, the two sleeves are oppositely arranged, at least one of the two sleeves is an insulating sleeve, one end of one of the two sleeves is provided with a first connecting part, one end of the other one of the two sleeves is provided with a second connecting part, and the first connecting part is detachably connected with the second connecting part so as to form a containing space between the two sleeves; the assembling and disassembling difficulty of the battery shell is reduced, the two sleeves are effectively convenient to assemble and disassemble, the assembling efficiency of the battery shell is further improved, and the maintenance of the battery is facilitated; the battery shell has lower cost, and simultaneously, the battery shell has an insulation effect, so that an insulation film and a sealing ring of the battery shell can be omitted, and the production cost of the battery is further reduced.

Description

Battery shell, battery and electric equipment

Technical Field

The utility model belongs to the technical field of battery production and manufacturing, and particularly relates to a battery shell, a battery and electric equipment.

Background

The lithium ion battery as a novel secondary battery has the advantages of high energy density and power density, high working voltage, light weight, small volume, long cycle life, good safety, environmental protection and the like, and has wide application prospect in the aspects of portable electric appliances, electric tools, large energy storage, electric traffic power sources and the like.

The conventional cylindrical battery generally comprises a shell, a cap and a battery cell, wherein the battery cell is arranged in the shell, and the cap is covered on an opening of the shell. In order to ensure the connection tightness of the cap and the shell and prevent electrolyte from overflowing or foreign matters from entering the inner core, the cap and the shell are usually fixedly connected by adopting a mechanical rolling sealing process (matched with a flexible sealing ring). In the manufacturing process of the cylindrical battery with the structure, the connecting process of the cap and the shell is complex, the operation is inconvenient, and once the battery is assembled, the cap and the shell are difficult to detach, so that the maintenance of the battery is inconvenient.

Disclosure of Invention

The utility model aims at: aiming at the defects of the prior art, the battery shell is provided, and the technical problems that the connection process of the cap and the shell is complex, the operation is inconvenient, and the cap and the shell are difficult to detach once the battery is assembled and the maintenance of the battery is inconvenient are solved.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

the battery shell comprises two sleeves with one open end, wherein the two sleeves are oppositely arranged, at least one of the two sleeves is an insulating sleeve, one end of one of the two sleeves is provided with a first connecting part, one end of the other one of the two sleeves is provided with a second connecting part, and the first connecting part is detachably connected with the second connecting part so that a containing space is formed between the two sleeves.

Preferably, the outer diameter of the first connecting portion is smaller than the outer diameter of the second connecting portion.

Preferably, the other end of at least one of the sleeves has a first face and a second face disposed opposite to each other, the first face being disposed toward the accommodation space, and the first face having a convex portion protruding toward the accommodation space, and the second face having a concave portion corresponding to the convex portion.

Preferably, the protruding portion has a through hole through which the conductive member is provided.

Preferably, the conductive member includes a main body portion and a rotation stopping portion connected to the main body portion, the main body portion is in threaded connection with the through hole, the rotation stopping portion is located in the recess, and the rotation stopping portion is matched with the recess in shape.

Preferably, the conductive member is provided with a thinned region.

Preferably, the other end of at least one of the two sleeves is provided with a liquid injection hole, and the liquid injection hole is in threaded connection with a sealing nail.

Another object of the utility model is: the battery comprises a battery core and a battery shell, wherein the battery shell is described in the specification, and the battery core is arranged in the accommodating space.

Preferably, a current collector is arranged between each sleeve and the end of the corresponding battery cell.

Yet another object of the present utility model is: there is provided a powered device comprising a battery as hereinbefore described in the description.

The battery shell has the beneficial effects that through the matched use of the two sleeves, the two sleeves are arranged oppositely, one of the two sleeves is provided with the first connecting part, the other sleeve is provided with the second connecting part, and when the battery shell is assembled, the first connecting part and the second connecting part are detachably connected, so that an accommodating space is formed between the two sleeves, and the accommodating space is used for accommodating a battery core of a battery. In the practical application process, the two sleeves can be detachably connected through the first connecting part and the second connecting part, so that the two sleeves are assembled to form the battery shell, the assembly and disassembly difficulty of the battery shell is reduced, the two sleeves are effectively convenient to install and disassemble, the installation efficiency of the battery shell is improved, and the battery is convenient to overhaul. Through setting up insulating sleeve, at least one insulating sleeve in two sleeves, prevent the battery short circuit effectively, battery case adopts insulating material, compares with current steel shell, and battery case's cost is lower, simultaneously, battery case has insulating effect, can save battery case's insulating film, sealing washer, has further reduced the manufacturing cost of battery.

Drawings

Features, advantages, and technical effects of exemplary embodiments of the present utility model will be described below with reference to the accompanying drawings.

Fig. 1 is a schematic view of the structure of a battery according to the present utility model.

Fig. 2 is an exploded view of the battery of the present utility model.

Fig. 3 is a schematic cross-sectional structure of the battery of the present utility model.

Fig. 4 is an enlarged schematic view of the structure at a in fig. 3.

Fig. 5 is an enlarged schematic view of the structure at B in fig. 3.

Fig. 6 is a schematic structural view of the sleeve according to the present utility model.

Fig. 7 is a schematic cross-sectional view of the sleeve of the present utility model.

Fig. 8 is a schematic view of another structure of the sleeve of the present utility model.

Fig. 9 is a schematic cross-sectional view of a sleeve according to the present utility model.

Fig. 10 is a schematic structural view of a conductive member according to the present utility model.

Wherein reference numerals are as follows:

100. a battery;

10. a battery case; 11. a sleeve; 111. a first face; 112. a second face; 12. a first connection portion; 13. a second connecting portion; 14. an accommodating space; 15. a boss; 151. a through hole; 16. a recessed portion; 17. a conductive member; 171. a main body portion; 172. a rotation stopping part; 173. thinning the area; 18. a liquid injection hole; 19. sealing nails;

20. a battery cell;

30. a current collector;

a. the outer diameter of the first connecting portion; b. the outer diameter of the second connecting part; c. the outer diameter of the sleeve.

Detailed Description

Certain terms are used throughout the description and claims to refer to particular components. Those of skill in the art will appreciate that a hardware manufacturer may refer to the same component by different names. The description and claims do not take the form of an element differentiated by name, but rather by functionality. As used throughout the specification and claims, the word "comprise" is an open-ended term, and thus should be interpreted to mean "include, but not limited to. By "substantially" is meant that within an acceptable error range, a person skilled in the art can solve the technical problem within a certain error range, substantially achieving the technical effect.

Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

The present utility model will be described in further detail with reference to fig. 1 to 10, but the present utility model is not limited thereto.

Example 1

Referring to fig. 1 to 10, a battery case 10 of the embodiment of the utility model includes two sleeves 11 with an opening at one end, the two sleeves 11 are oppositely disposed, at least one of the two sleeves 11 is an insulating sleeve, one end of one of the two sleeves 11 has a first connecting portion 12, one end of the other of the two sleeves 11 has a second connecting portion 13, and the first connecting portion 12 is detachably connected with the second connecting portion 13, so that a receiving space 14 is formed between the two sleeves 11.

Compared with the prior art, the battery case 10 of the embodiment of the utility model uses the two sleeves 11 in a matching way, the two sleeves 11 are arranged oppositely, one of the two sleeves 11 is provided with the first connecting part 12, the other sleeve is provided with the second connecting part 13, and when the battery case is assembled, the first connecting part 12 and the second connecting part 13 are detachably connected, so that a containing space 14 is formed between the two sleeves 11, and the containing space 14 is used for containing the battery cells 20 of the battery 100. In the practical application process, the two sleeves 11 can be detachably connected through the first connecting part 12 and the second connecting part 13, so that the two sleeves 11 are assembled to form the battery shell 10, the assembly and disassembly difficulty of the battery shell 10 is reduced, the two sleeves 11 are effectively convenient to install and disassemble, the installation efficiency of the battery shell 10 is improved, and the maintenance of the battery 100 is facilitated. Through setting up insulating sleeve, at least one insulating sleeve in two sleeves 11, the effectual battery short circuit that prevents, battery case 10 adopt insulating material, compare with current steel shell, battery case 10's cost is lower, simultaneously, battery case 10 has insulating effect, can save battery case 10's insulating film, sealing washer, has further reduced battery 100's manufacturing cost.

In some embodiments, the outer diameter a of the first connection portion 12 is smaller than the outer diameter b of the second connection portion 13. The second connecting portion 13 may be fitted over the first connecting portion 12 when the two sleeves 11 are assembled.

Further, the first connecting portion 12 is screwed with the second connecting portion 13.

The sleeve 11 of the present utility model has a cylindrical structure with one end open and the other end closed.

The outer diameter b of the second connecting portion 13 is equal to the outer diameter c of the sleeve 11.

Referring to fig. 3 and 5, in some embodiments, the other end of the sleeve 11 has a first surface 111 and a second surface 112 opposite to each other, the first surface 111 is disposed towards the accommodating space 14, the first surface 111 has a protrusion 15 protruding towards the accommodating space 14, and the second surface 112 has a recess 16 corresponding to the protrusion 15. Through setting up bellying 15, bellying 15 is located accommodation space 14, and after battery 100 equipment was accomplished, bellying 15 offsets with electric core 20 for restriction electric core 20 prevents that electric core 20 from appearing rocking in the in-process of mobile battery 100, and then leads to electric core 20's utmost point ear and current collecting plate or utmost point post welded position to appear breaking, influences battery 100's use. By the arrangement of the concave portion 16, the concave portion 16 corresponds to the position of the convex portion 15, and the structural strength of the convex portion 15 can be enhanced to some extent.

In some embodiments, the boss 15 has a through hole 151, and the through hole 151 is perforated with the conductive member 17. Through the provision of the through-hole 151 in the boss 15, the through-hole 151 is used to communicate the inside and outside of the battery case 10, the conductive member 17 is provided on the sleeve through the through-hole 151, and in practical use, the battery 100 can be connected with an external power source through the conductive member 17 to realize the use of the battery 100.

In some embodiments, the conductive member 17 includes a main body 171, and the main body 171 is screwed with the through hole 151. Through the setting of main part 171, main part 171 and through-hole 151 threaded connection, in practical application in-process, electrically conductive piece 17 can pass through main part 171 and through-hole 151 threaded connection, has reduced the equipment of electrically conductive piece 17 effectively, the dismantlement degree of difficulty, the equipment of electrically conductive piece 17 of being convenient for, dismantlement, and then improves battery case 10's installation effectiveness. Meanwhile, the conductive member 17 can be directly assembled with the sleeve 11 through the through hole 151, so that an insulating member is omitted, and the production cost of the battery 100 is further reduced.

Further, the conductive member 17 further includes a rotation stopping portion 172 connected to the main body 171, the rotation stopping portion 172 is located in the recess 16, and the rotation stopping portion 172 is matched with the shape of the recess 16. By the arrangement of the rotation stopping part 172, the rotation stopping part 172 is connected with the main body part 171, and when the electric conduction member 17 is assembled, the main body part 171 is in threaded connection with the through hole 151, and the rotation stopping part 172 is positioned in the concave part 16, so that the torque of the electric conduction member 17 is effectively increased, and the electric conduction member 17 is prevented from falling off in the use process.

Referring to fig. 5, in some embodiments, the conductive member 17 is provided with a thinned region 173. Through setting up the thinned region 173, thinned region 173 is located on electrically conductive piece 17, and thinned region 173's thickness is less than electrically conductive piece 17's thickness far away, and after battery 100 equipment was accomplished, electrically conductive piece 17 can be through thinned region 173 and the tab or the current collector 30 welding of electric core 20, realizes that electrically conductive piece 17 and the tab or the current collector 30 electricity of electric core 20 are connected, reduces electrically conductive piece 17 and the connection degree of difficulty of tab or the current collector 30 of electric core 20, and then improves battery 100's packaging efficiency. Specifically, the thinned region 173 and the tab or collector 30 of the cell 20 are penetration welded.

In some embodiments, the other end of at least one of the two sleeves 11 is provided with a liquid injection hole 18, and the liquid injection hole 18 is connected with a sealing nail 19 in a threaded manner. Through the cooperation of annotating liquid hole 18 and sealing nail 19 and use, sealing nail 19 and annotate liquid hole 18 threaded connection, accessible threaded connection seals after the battery 100 annotates the liquid, makes things convenient for battery 100 follow-up replenishing electrolyte, gets rid of battery 100 and produces waste gas, is favorable to improving circulation, the security performance of battery 100.

At least one of the sleeves 11 is provided with a weakened portion. When the battery 100 is thermally out-of-control, that is, when the internal pressure of the battery 100 reaches a threshold value, the weak portion breaks to release the gas inside the battery 100, preventing explosion from occurring after the thermal out-of-control of the battery 100, and improving the safety of the battery 100.

Example two

Referring to fig. 1 to 10, a battery 100 according to an embodiment of the utility model includes a battery cell 20 and the battery case 10 of the above embodiment, where the battery cell 20 is disposed in the accommodating space 14.

In some embodiments, a current collector 30 is disposed between each sleeve 11 and the end of the cell 20 corresponding thereto. By providing the current collector 30, the current collector 30 is used for connecting the conductive member 17 and the tab of the battery cell 20, so as to realize the electrical connection between the conductive member 17 and the tab of the battery cell 20.

Specifically, the current collector 30 is used for welding with the thinned region 173 in the first embodiment.

Example III

The electric device according to the embodiment of the present utility model includes the battery 100 according to the above embodiment. The electric equipment can be an automobile, a mobile phone, portable equipment, a notebook computer, a ship, a spacecraft, an electric toy, an electric tool and the like. The automobile can be a fuel oil automobile, a fuel gas automobile or a new energy automobile, and the new energy automobile can be a pure electric automobile, a hybrid electric automobile or a range-extended automobile and the like; spacecraft including airplanes, rockets, space planes, spacecraft, and the like; the electric toy includes fixed or mobile electric toys, such as a game machine, an electric car toy, an electric ship toy, and an electric airplane toy; power tools include metal cutting power tools, grinding power tools, assembly power tools, and railroad power tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete shakers, and electric planers, among others. The embodiment of the application does not limit the electric equipment in particular.

The number of the battery 100 may be one or a plurality of. If there are multiple batteries 100, the multiple batteries 100 may be connected in series or parallel or a series-parallel connection, where a series-parallel connection refers to that there are both series and parallel connection among the multiple batteries 100. The batteries 100 can be directly connected in series or in parallel or in series-parallel to form a whole; of course, a plurality of batteries 100 may be connected in series or in parallel or in series to form a battery 100 module, and then a plurality of battery 100 modules may be connected in series or in parallel or in series to form a whole.

Variations and modifications of the above embodiments will occur to those skilled in the art to which the utility model pertains from the foregoing disclosure and teachings. Therefore, the present utility model is not limited to the above-described embodiments, but is intended to be capable of modification, substitution or variation in light thereof, which will be apparent to those skilled in the art in light of the present teachings. In addition, although specific terms are used in the present specification, these terms are for convenience of description only and do not limit the present utility model in any way.

Claims (10)

1. Battery case, its characterized in that: including one end open-ended two sleeve (11), two sleeve (11) set up relatively, and two at least one of sleeve is insulating sleeve, two one of sleeve (11)'s one end has first connecting portion (12), two one of sleeve (11) has second connecting portion (13) one end of another, first connecting portion (12) with second connecting portion (13) can dismantle and be connected, so that two form accommodation space (14) between sleeve (11).

2. The battery case according to claim 1, wherein: the outer diameter a of the first connecting portion (12) is smaller than the outer diameter b of the second connecting portion (13).

3. The battery case according to claim 1, wherein: the other end of at least one sleeve (11) is provided with a first surface (111) and a second surface (112) which are oppositely arranged, the first surface (111) is arranged towards the accommodating space (14), the first surface (111) is provided with a convex part (15) protruding towards the accommodating space (14), and the second surface (112) is provided with a concave part (16) corresponding to the convex part (15).

4. A battery housing as claimed in claim 3, wherein: the protruding portion (15) is provided with a through hole (151), and the through hole (151) is penetrated with a conductive piece (17).

5. The battery housing of claim 4, wherein: the conductive member (17) comprises a main body part (171) and a rotation stopping part (172) connected with the main body part (171), the main body part (171) is in threaded connection with the through hole (151), the rotation stopping part (172) is located in the concave part (16), and the rotation stopping part (172) is matched with the concave part (16) in shape.

6. The battery housing of claim 4, wherein: the conductive member (17) is provided with a thinned region (173).

7. The battery case according to claim 1, wherein: the other end of at least one sleeve (11) is provided with a liquid injection hole (18), and the liquid injection hole (18) is in threaded connection with a sealing nail (19).

8. A battery, characterized in that: the battery comprises an electric core (20) and the battery shell according to any one of claims 1-7, wherein the electric core (20) is arranged in the accommodating space (14).

9. The battery of claim 8, wherein: a current collector (30) is arranged between each sleeve (11) and the end part of the corresponding battery cell (20).

10. Electric equipment, its characterized in that: a battery comprising a battery according to any one of claims 8 to 9.