Battery shell, battery and electronic equipment

Abstract

The utility model provides a battery shell, a battery and electronic equipment, the battery shell comprises a first shell and a second shell which are connected in a folding manner, and the first shell and the second shell define a containing cavity; the first shell comprises a bottom wall, an end wall and a plurality of side walls, the end wall and the plurality of side walls are sequentially connected and surround the edge of the bottom wall, the end wall comprises an inclined part, and the inclined part is provided with a pole hole and is obliquely arranged relative to the bottom wall. Through the arrangement, the pole of the battery can be obliquely arranged on the end wall of the battery shell, so that the thickness of the battery shell is reduced, the volume of the battery shell is reduced, and the space utilization rate of the battery shell is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of energy storage, in particular to a battery shell, a battery and an electronic device. BACKGROUND

[0002] For intelligent mobile terminals, the product structure gradually develops in the direction of thinness, which puts forward higher requirements for ultra-thin battery technology. The shell of the steel shell battery on the market is usually a regular cuboid shape. Due to the size limitation of the battery and the pole column connecting assembly, it is difficult to further reduce the thickness of the battery, and the space utilization in the shell is difficult to improve, which affects the improvement of the battery capacity. CONTENT OF THE UTILITY MODEL

[0003] Therefore, the present application provides a battery shell, a battery and an electronic device, which can reduce the thickness of the battery shell and improve the space utilization of the battery shell.

[0004] Specifically, the technical scheme comprises the following:

[0005] In a first aspect, the present application provides a battery shell, which comprises a first shell and a second shell connected together, and the first shell and the second shell enclose a containing cavity.

[0006] The first shell comprises a bottom wall, an end wall and a plurality of side walls, the end wall and the plurality of side walls are connected in sequence and arranged around the edge of the bottom wall, the end wall comprises an inclined portion, the inclined portion is provided with a pole column hole, and the inclined portion is arranged inclinedly relative to the bottom wall.

[0007] In an optional embodiment, the included angle between the inclined portion and the bottom wall is an obtuse angle, and the plurality of side walls are perpendicular to the bottom wall.

[0008] In an optional embodiment, the end wall further comprises a flat portion and a connecting portion, the flat portion is distributed along the length direction of the end wall with the inclined portion, the flat portion is perpendicular to the bottom wall, and the connecting portion is used for connecting the flat portion and the inclined portion.

[0009] In an optional embodiment, one end of the flat portion for connecting with the bottom wall and one end of the inclined portion for connecting with the bottom wall are staggered arranged along the length direction of the bottom wall, and the end of the flat portion away from the bottom wall is flush with the end of the inclined portion away from the bottom wall.

[0010] In a second aspect, the present application provides a battery, which comprises a battery shell, a first pole column and a battery shell provided by any one of the embodiments of the first aspect, the battery shell comprises a containing cavity, the battery shell is provided with a first pole column hole, the battery comprises an electric core, the electric core is accommodated in the containing cavity of the battery shell, and the first pole column is inserted into the first pole column hole and connected with the electric core.

[0011] In an optional embodiment, the thickness direction of the first pole post is perpendicular to the extension plane of the inclined portion, so that the first pole post is arranged obliquely relative to the bottom wall.

[0012] In an optional embodiment, the battery further comprises a connecting piece, the battery cell is provided with a first tab and a second tab, the first tab is connected with the first pole post, and the second tab and the connecting piece are respectively welded on both sides of the end wall in the thickness direction of the end wall.

[0013] In an optional embodiment, the end wall further comprises a flat portion and a connecting portion, the flat portion is perpendicular to the bottom wall, the flat portion and the inclined portion are distributed along the length direction of the end wall, and the connecting portion is used for connecting the flat portion and the inclined portion.

[0014] The connecting piece is connected with the flat portion.

[0015] In an optional embodiment, one end of the flat portion used for connecting with the bottom wall is staggered with one end of the inclined portion used for connecting with the bottom wall in the length direction of the bottom wall, and one end of the flat portion away from the bottom wall is flush with one end of the inclined portion away from the bottom wall.

[0016] The battery cell is provided with a protruding portion near one end of the end wall, the second tab is located on the protruding portion, and the first tab is located on the end face of one end of the battery cell near the end wall.

[0017] In an optional embodiment, the first pole post comprises a rivet, an insulating piece and a conductive piece, the insulating piece is embedded in the pole post hole, the rivet is inserted into the insulating piece, the conductive piece is in abutment with one end face of the insulating piece in the accommodation cavity and is sleeved on the outer peripheral surface of the rivet, and the conductive piece is respectively in conductive connection with the first tab and the rivet.

[0018] In a third aspect, the embodiments of the present application provide an electronic device comprising the battery provided in any one of the embodiments of the second aspect.

[0019] The technical scheme provided by the embodiments of the present application has at least the following beneficial effects: by arranging the end wall to comprise an inclined portion arranged obliquely relative to the bottom wall, and arranging the inclined portion to be provided with a pole post hole used for mounting a pole post, the pole post of the battery can be arranged obliquely on the end wall of the battery shell, so as to realize the thinning of the thickness of the battery shell, reduce the volume of the battery shell, and improve the space utilization rate of the battery shell. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0021] Figure 1 An exploded view of a battery shell provided by some embodiments of the present application;

[0022] Figure 2 An exploded view of a battery provided by some embodiments of the present application;

[0023] Figure 3 A side view of a battery provided by some embodiments of the present application;

[0024] Figure 4 A perspective view of a battery provided by some embodiments of the present application;

[0025] Figure 5 A partial front view of a battery provided by some embodiments of the present application;

[0026] Figure 6 A structural schematic view of an electrode provided by some embodiments of the present application;

[0027] Figure 7 A partial sectional view of a battery provided by some embodiments of the present application.

[0028] The reference signs in the drawings respectively represent:

[0029] 1-first shell; 11-bottom wall; 12-end wall; 121-inclined part; 1211-pole hole; 122-straight part; 123-connection part; 124-liquid injection hole; 13-side wall; 14-accommodation cavity; 15-first side; 16-second side; 17-third side; 2-second shell; 3-electrode; 31-first tab; 32-second tab; 33-protruding part; 4-first pole; 41-rivets; 42-insulating part; 421-first insulating part; 422-second insulating part; 43-conductive part; 5-connection sheet; 6-liquid injection plug.

[0030] The above drawings have shown the specific embodiments of the present application, which will be described in more detail hereinafter. These drawings and textual descriptions are not intended to limit the scope of the concept of the present application by any means, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0031] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only some of the embodiments of the present application, but not all of them. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts should fall within the scope of the present application.

[0032] The orientation nouns such as "upper", "lower", "lateral" and the like involved in the embodiments of the present application are generally based on the relative relationship of the orientation shown in the drawings, and these orientation nouns are only used for more clearly describing the structure and the relationship between the structures, and are not used for describing absolute orientation. When the product is placed in different postures, the orientation may change, for example, "upper" and "lower" may be interchanged. Figure 1

[0033] Unless otherwise defined, all the technical terms used in the embodiments of the present application have the same meanings as commonly understood by those of ordinary skill in the art. Some technical terms appearing in the embodiments of the present application are explained below.

[0034] In order to make the technical solutions and advantages of the present application clearer, the embodiments of the present application will be further described in detail below with reference to the drawings.

[0035] For the intelligent mobile terminal, the product structure gradually develops in the direction of thinness, and higher requirements are put forward for the ultra-thin battery technology. The shell of the steel shell battery on the market is usually a regular cuboid shape. Due to the limitation of the size of the battery and the size of the pole connecting assembly, it is difficult to further reduce the thickness of the battery, and the space utilization in the shell is difficult to improve, which affects the improvement of the battery capacity.

[0036] In view of the above technical problems, the embodiments of the present application provide a battery shell and a battery.

[0037] As shown in Figure 1 and Figure 2 , the battery shell comprises a first shell 1 and a second shell 2 connected with each other, and the first shell 1 and the second shell 2 enclose a containing cavity 14 for containing the battery cell 3, electrolyte and the like.

[0038] Exemplarily, the first shell 1 and the second shell 2 are made of metal material, for example, the first shell 1 and the second shell 2 are both made of steel material, which has good corrosion resistance and physical stability, and the battery shell is the shell of the steel shell battery.

[0039] ​The first shell 1 comprises a bottom wall 11, an end wall 12 and a plurality of side walls 13, the end wall 12 and the plurality of side walls 13 are sequentially connected and surround the edge of the bottom wall 11, the end wall 12 comprises an inclined portion 121, the inclined portion 121 is provided with a pole hole 1211, and the inclined portion 121 is arranged to be inclined relative to the bottom wall 11.

[0040] As shown in the drawings, the first shell 1 comprises a bottom wall 11, an end wall 12 and a plurality of side walls 13, the end wall 12 and the plurality of side walls 13 are sequentially connected and surround the edge of the bottom wall 11, the end wall 12 comprises an inclined portion 121, the inclined portion 121 is provided with a pole hole 1211, and the inclined portion 121 is arranged to be inclined relative to the bottom wall 11. Figure 1 Or Figure 2 As shown in the drawings, the second shell 2 is in the form of a flat plate, the edge of the end wall 12 and the side wall 13 of the first shell 1 is provided with a flange edge, and the first shell 1 is butted with the second shell 2 through the flange edge.

[0041] As shown in the drawings, the first shell 1 comprises a bottom wall 11, an end wall 12 and a plurality of side walls 13, the end wall 12 and the plurality of side walls 13 are sequentially connected and surround the edge of the bottom wall 11, the end wall 12 comprises an inclined portion 121, the inclined portion 121 is provided with a pole hole 1211, and the inclined portion 121 is arranged to be inclined relative to the bottom wall 11. Figure 1 As shown in the drawings, the bottom wall 11 is in the form of a rectangular flat plate and has four sides, the number of the end wall 12 is one, and the number of the plurality of side walls 13 is three. One side of the bottom wall 11 is connected with the end wall 12, and the remaining three sides are respectively and correspondingly connected with one side wall 13, the end wall 12 and the plurality of side walls 13 are sequentially connected and surround the edge of the bottom wall 11 to form a ring structure.

[0042] As shown in the drawings, the end wall 12 and one of the side walls 13 are arranged to be opposite along the length direction of the bottom wall 11, and the other two side walls 13 are arranged to be opposite along the width direction of the bottom wall 11.

[0043] The inclined portion 121 of the end wall 12 is inclined relative to the bottom wall 11, the pole hole 1211 provided in the inclined portion 121 is a through hole, and the pole hole 1211 is used for mounting a battery pole.

[0044] At present, most of the battery shells on the market are in the form of a regular cuboid, the battery pole extends along the length direction of the battery and is vertically arranged on the end face of the battery shell, and the length direction dimension of the battery occupies a certain space, which affects the battery capacity.

[0045] The battery shell provided by the embodiment can realize the thinning of the thickness of the battery shell, reduce the volume of the battery shell, and improve the space utilization rate of the battery shell.

[0046] The battery shell provided by the embodiment has at least the following beneficial effects: by arranging the end wall 12 to comprise an inclined portion 121 arranged to be inclined relative to the bottom wall 11 and the inclined portion 121 is provided with a pole hole 1211 used for mounting a pole, the pole of the battery can be arranged to be inclined on the end wall 12 of the battery shell, thereby realizing the thinning of the thickness of the battery shell, reducing the volume of the battery shell, and improving the space utilization rate of the battery shell.

[0047] In one specific embodiment, the angle between the inclined portion 121 and the bottom wall 11 is an obtuse angle, and the multiple side walls 13 are all perpendicular to the bottom wall 11.

[0048] like Figure 3 As shown, the inclined portion 121 is generally flat and inclined outward from the bottom wall 11, and each side wall 13 is perpendicular to the bottom wall 11.

[0049] The angle of the inclined part 121 can be set according to the size of the battery terminal to provide sufficient installation area for the battery terminal and ensure that the battery terminal can be stably installed on the inclined part 121.

[0050] In this embodiment, it is beneficial to reduce the space occupied by the battery terminals in the length direction, and since multiple side walls 13 are perpendicular to the bottom wall 11, it can also ensure that the volume of the receiving cavity 14 is sufficient, thus avoiding affecting the battery capacity.

[0051] In an optional embodiment, such as Figures 1 to 3 As shown, the end wall 12 only includes the inclined portion 121, that is, the length of the inclined portion 121 is equal to the length of the end wall 12, and the end wall 12 is inclined to the bottom wall 11 as a whole. It can be understood that the length of the end wall 12 / inclined portion 121 is the linear dimension of the end wall 12 / inclined portion 121 in the width direction of the bottom wall 11. The length direction of the end wall 12 is the width direction of the bottom wall 11.

[0052] In another alternative embodiment, such as Figure 4 As shown, the end wall 12 also includes a straight portion 122 and a connecting portion 123. The straight portion 122 and the inclined portion 121 are distributed along the length direction of the end wall 12. The straight portion 122 is perpendicular to the bottom wall 11, and the connecting portion 123 is used to connect the straight portion 122 and the inclined portion 121. In this embodiment, the length of the inclined portion 121 is less than the length of the end wall 12, and the end wall 12 is only partially inclined to the bottom wall 11.

[0053] For example, the connecting portion 123 is perpendicular to the straight portion 122 and the bottom wall 11 respectively, and the connecting portion 123 connects the end of the inclined portion 121 near the straight portion 122 to the end of the straight portion 122 near the inclined portion 121.

[0054] In this embodiment, only the inclined portion 121 for mounting the terminal post in the end wall 12 is inclined to the bottom wall 11, while the straight portion 122 is perpendicular to the bottom wall 11. This is beneficial for making full use of the head space of the battery casing, increasing the size of the receiving cavity 14 in the length direction of the bottom wall 11, and helping to improve the battery capacity.

[0055] Specifically, the ends of the flat sections 122 for connecting with the bottom wall 11 and the ends of the inclined sections 121 for connecting with the bottom wall 11 are staggered along the length direction of the bottom wall 11, and the ends of the flat sections 122 away from the bottom wall 11 are flush with the ends of the inclined sections 121 away from the bottom wall 11.

[0056] As shown in Figure 5 the side of the bottom wall 11 for connecting with the end wall 12 is in a stepped shape, which includes a first side 15, a second side 16 and a third side 17 connected in sequence, the first side 15 and the third side 17 both extend along the width direction of the bottom wall 11, and the second side 16 extends along the length direction of the bottom wall 11, and the second side 16 is closer to the outer side of the bottom wall 11 than the first side 15. Specifically, the first side 15 is connected with the inclined section 121, the second side 16 is connected with the connecting section 123, and the third side 17 is connected with the flat section 122, so that the ends of the flat sections 122 for connecting with the bottom wall 11 and the ends of the inclined sections 121 for connecting with the bottom wall 11 are staggered along the length direction of the bottom wall 11.

[0057] The ends of the flat sections 122 away from the bottom wall 11 are flush with the ends of the inclined sections 121 away from the bottom wall 11, which facilitates the setting of a regular strip-shaped flange edge, and ensures the stability of the connection between the first shell 1 and the second shell 2.

[0058] In this embodiment, only the inclined sections 121 for mounting the pole columns in the end wall 12 are inclined to the bottom wall 11, which is conducive to reducing the size occupied by the battery pole columns in the length direction of the battery; since the flat sections 122 are perpendicular to the bottom wall 11, and the ends of the flat sections 122 for connecting with the bottom wall 11 are closer to the outer side of the bottom wall 11 than the ends of the inclined sections 121 for connecting with the bottom wall 11, the head space of the battery shell at the flat sections 122 can be ensured to be larger, which is conducive to fully utilizing the head space of the battery shell and improving the capacity of the battery.

[0059] As shown in Figure 1 the end wall 12 is further provided with a liquid injection hole 124, which facilitates the injection of electrolyte into the accommodating cavity 14, and after the injection of electrolyte is completed, the liquid injection hole 124 is closed by the liquid injection plug 6.

[0060] The embodiments of the present application also provide a battery, which includes a battery cell 3, a first pole column 4 and the battery shell provided by any of the embodiments described above, the battery cell 3 is accommodated in the accommodating cavity 14 of the battery shell, and the first pole column 4 is inserted into the pole column hole 1211 and connected with the battery cell 3.

[0061] Exemplarily, the first pole column 4 is a positive pole column.

[0062] The battery provided by the embodiment of the present application has the pole column hole 1211 arranged on the inclined part 121, the first pole column 4 can be inserted into the pole column hole 1211 and is inclined to the bottom wall 11 of the first shell 1, in the case of a certain length direction size of the battery, the first pole column 4 arranged obliquely occupies less space in the length direction compared with the conventional pole column mounting mode, which is beneficial to improve the size of the battery cell 3 in the length direction of the battery and thus improve the capacity of the battery.

[0063] Further, the thickness direction of the first pole column 4 is perpendicular to the extension plane of the inclined part 121, so that the first pole column 4 is arranged obliquely relative to the bottom wall 11.

[0064] Specifically, the first pole column 4 is inserted into the pole column hole 1211 along the thickness direction of the first pole column 4, and the thickness direction of the first pole column 4 is inclined to the bottom wall 11.

[0065] In this embodiment, the first pole column 4 is mounted obliquely to the bottom wall 11, which weakens the limitation of the thickness of the battery on the vertical size of the first pole column 4, so that the thickness of the battery can be reduced, and compared with the design in the prior art in which the pole column is arranged vertically to the side wall 13 of the shell, the first pole column 4 provided by the embodiment of the present application occupies less space in the length direction of the battery, which is beneficial to improve the capacity of the battery.

[0066] Further, as shown in Figure 2 , the battery further comprises a connecting sheet 5, and the battery cell 3 is provided with a first tab 31 and a second tab 32. The first tab 31 is connected with the first pole column 4, and the second tab 32 and the connecting sheet 5 are respectively welded on both sides of the end wall 12 in the thickness direction of the end wall 12.

[0067] The first tab 31 and the second tab 32 are used to lead out the positive and negative poles of the battery cell 3, the first tab 31 is the positive tab of the battery cell 3, and the second tab 32 is the negative tab of the battery cell 3. The first tab 31 is in conductive connection with the first pole column 4, the first pole column 4 is the positive pole column of the battery, the connecting sheet 5 and the second tab 32 are respectively in conductive connection with the battery shell through welding, the connecting sheet 5 is the negative pole column of the battery, and the connecting sheet 5 is a nickel sheet.

[0068] Further, as shown in Figure 4 and Figure 5 , the end wall 12 further comprises a flat part 122 and a connecting part 123, the flat part 122 is perpendicular to the bottom wall 11, the flat part 122 and the inclined part 121 are distributed along the length direction of the end wall 12, and the connecting part 123 is used to connect the flat part 122 and the inclined part 121; the connecting sheet 5 is connected with the flat part 122.

[0069] In this embodiment, the positive pole of the battery is located at the inclined part 121, and the negative pole of the battery is located at the flat part 122. Since the thickness of the connecting piece 5 is thin, the connecting piece 5 is arranged at the flat part 122, which can reduce the influence on the length direction size of the battery. The thickness of the first pole 4 is greater than that of the connecting piece 5. The first pole 4 is arranged at the inclined part 121, which occupies less space in the length direction, which is beneficial to improve the size of the battery cell 3 in the length direction of the battery, thereby improving the capacity of the battery.

[0070] Further, as shown in Figure 5 , the length direction of the one end of the flat part 122 connected with the bottom wall 11 and the one end of the inclined part 121 connected with the bottom wall 11 are staggered, and the one end of the flat part 122 away from the bottom wall 11 is flush with the one end of the inclined part 121 away from the bottom wall 11; as shown in Figure 6 , the protruding part 33 is arranged at the one end of the battery cell 3 close to the end wall 12, the second pole lug 32 is located on the protruding part 33, and the first pole lug 31 is located on the end face of the one end of the battery cell 3 close to the end wall 12.

[0071] In this embodiment, the battery cell 3 is a special-shaped battery cell structure, which can be a double battery cell or a laminated battery cell.

[0072] As shown in Figure 6 , since the second pole lug 32 is located on the protruding part 33, the first pole lug 31 and the second pole lug 32 are staggered in the length direction of the battery cell 3, and the position of the second pole lug 32 is higher than that of the first pole lug 31. The length and position of the protruding part 33 are matched with the length and position of the flat part 122, respectively.

[0073] By arranging the protruding part 33, the head of the battery cell 3 can be matched with the shape of the head of the battery shell, and the space in the length direction of the battery can be more fully utilized, thereby effectively improving the volume of the battery cell 3 and the capacity of the battery.

[0074] In an embodiment, as shown in Figure 7 , the first pole 4 includes a rivet 41, an insulating piece 42 and a conductive piece 43. The insulating piece 42 is embedded in the pole hole 1211, the rivet 41 is inserted into the insulating piece 42, the conductive piece 43 is in abutment with the one end face of the insulating piece 42 in the accommodating cavity 14 and is sleeved on the outer peripheral surface of the rivet 41, and the conductive piece 43 is in conductive connection with the first pole lug 31 and the rivet 41, respectively.

[0075] The insulating piece 42 is used to realize the insulation between the first pole 4 and the battery shell, the conductive piece 43 is an aluminum sheet, and the first pole lug 31 realizes conductive connection with the rivet 41 by taking the conductive piece 43 as a medium.

[0076] Exemplarily, the insulating member 42 comprises a first insulating part 421 and a second insulating part 422, the first insulating part 421 is used for being inserted into the pole hole 1211 and abutting against the surface of the inclined part 121 to achieve limiting, and the second insulating part 422 is sleeved outside the first insulating part 421 and located in the accommodating cavity 14.

[0077] Exemplarily, the installation process of the first pole 4 comprises: inserting the first insulating part 421 into the pole hole 1211 and abutting the first insulating part 421 against the outer surface of the inclined part 121; inserting the rivet 41 into the first insulating part 421; sleeving the second insulating part 422 outside the first insulating part 421 and abutting the second insulating part 422 against the inner surface of the inclined part 121; sleeving the conductive member 43 connected with the first lug 31 into the rivet 41, so that the conductive member 43 abuts against the second insulating member 42; and riveting the rivet 41 by using a riveter or a manual riveting tool, in the riveting process, the two ends of the rivet 41 are compressed or deformed, so that the two ends are firmly fixed on the first insulating part 421 and the conductive member 43.

[0078] The embodiment of the application further provides an electronic device, and the electronic device comprises the battery provided by any one of the above embodiments. The electronic device includes but is not limited to a mobile phone, a tablet computer, a notebook computer, a walkie-talkie, a netbook, a driving recorder, a wearable device, a virtual reality device, etc.

[0079] In the present application, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. The term "a plurality of" refers to two or more, unless otherwise explicitly limited.

[0080] Other embodiments of the application will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. The application is intended to cover any variations, uses, or adaptations of the application following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice in the art to which the application pertains. The specification and examples are to be regarded as exemplary only.

[0081] It should be understood that the application is not limited to the precise construction that has been described above and shown in the accompanying drawings, and that various modifications and changes can be made by those skilled in the art without departing from the scope of the application. The scope of the application is limited only by the appended claims.

Claims

1. A battery case characterized by comprising: The battery shell comprises a first shell (1) and a second shell (2) connected together, and the first shell (1) and the second shell (2) enclose a containing cavity (14); The first shell (1) comprises a bottom wall (11), an end wall (12) and a plurality of side walls (13), the end wall (12) and the plurality of side walls (13) are sequentially connected and arranged around the edge of the bottom wall (11), and the end wall (12) comprises an inclined portion (121), the inclined portion (121) is provided with a pole hole (1211), and the inclined portion (121) is arranged obliquely relative to the bottom wall (11).

2. The battery case according to claim 1, wherein The angle between the inclined portion (121) and the bottom wall (11) is obtuse, and the plurality of side walls (13) are perpendicular to the bottom wall (11).

3. The battery case according to claim 1, wherein The end wall (12) further comprises a flat portion (122) and a connecting portion (123), the flat portion (122) is distributed along the length direction of the end wall (12) and is perpendicular to the bottom wall (11), and the connecting portion (123) is used for connecting the flat portion (122) and the inclined portion (121).

4. The battery case according to claim 3, characterized by One end of the flat portion (122) used for connecting with the bottom wall (11) and one end of the inclined portion (121) used for connecting with the bottom wall (11) are staggered along the length direction of the bottom wall (11), and the other end of the flat portion (122) away from the bottom wall (11) is flush with the other end of the inclined portion (121) away from the bottom wall (11).

5. A battery, characterized by The battery comprises a battery shell, a first pole (4) and an electric core (3), the electric core (3) is accommodated in the containing cavity (14) of the battery shell, and the first pole (4) is inserted into the pole hole (1211) and connected with the electric core (3).

6. The battery of claim 5, wherein, The thickness direction of the first pole (4) is perpendicular to the extension plane of the inclined portion (121), so that the first pole (4) is arranged obliquely relative to the bottom wall (11).

7. The battery of claim 5, wherein, The battery further comprises a connecting sheet (5), the electric core (3) is provided with a first tab (31) and a second tab (32), the first tab (31) is connected with the first pole (4), and the second tab (32) and the connecting sheet (5) are respectively welded on both sides of the end wall (12) in the thickness direction of the end wall (12).

8. The battery of claim 7, wherein, The end wall (12) further comprises a flat portion (122) and a connecting portion (123), the flat portion (122) is perpendicular to the bottom wall (11), the flat portion (122) is distributed along the length direction of the end wall (12), and the connecting portion (123) is used for connecting the flat portion (122) and the inclined portion (121); The connecting sheet (5) is connected with the flat portion (122).

9. The battery of claim 8, wherein, The flat part (122) is staggered with the length direction of the bottom wall (11) at one end connected with the bottom wall (11) and the other end of the inclined part (121) connected with the bottom wall (11), and the other end of the flat part (122) away from the bottom wall (11) is flush with the other end of the inclined part (121) away from the bottom wall (11); The protruding part (33) is arranged on one end of the electric core (3) close to the end wall (12), the second lug (32) is arranged on the protruding part (33), and the first lug (31) is arranged on the end face of one end of the electric core (3) close to the end wall (12).

10. The battery of claim 7, wherein, The first pole (4) comprises a rivet (41), an insulating part (42) and a conductive part (43), the insulating part (42) is embedded in the pole hole (1211), the rivet (41) is inserted into the insulating part (42), the conductive part (43) is in contact with the end face of the insulating part (42) in the accommodating cavity (14) and is sleeved on the outer peripheral surface of the rivet (41), and the conductive part (43) is respectively in conductive connection with the first lug (31) and the rivet (41).

11. An electronic device, comprising: The electronic device comprises the battery of any one of claims 5-10.

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