Battery cell and electronic equipment

Abstract

The utility model discloses a battery cell and electronic equipment. The battery cell comprises a battery cell body; the circuit protection board is electrically connected with the tabs of the battery cell body; and the protection piece wraps the circuit protection plate, and a taking-out groove and / or a handle is formed in the surface, away from the bottom wall of the battery bin, of the protection piece. According to the battery cell, the surface, far away from the bottom wall of the battery bin, of the protection piece wrapping the circuit protection plate forms the taking-out groove and / or the handle; after the protection part is subjected to injection molding, the taking-out groove and / or the lifting handle integrally formed with the battery cell is naturally formed, and the taking-out groove and / or the lifting handle serve as stress points and can be conveniently operated by a user, so that the battery cell is pulled out of the battery bin; as above, structures such as a small handle do not need to be attached to the surface of the battery cell, and waste of consumables is effectively reduced; and the arrangement of other structural parts on the surface of the battery cell is not limited by the structural layout of the small handle any more, so that the manufacturing process of the battery cell is effectively optimized.

Description

Technical Field

[0001] The present application relates to the technical field of lithium-ion batteries, and more specifically to a battery cell, and also to an electronic device including the battery cell. Background Art

[0002] At present, the quick-release structure of most mobile phone batteries adopts a small handle plus an easy-tear sticker (or an easy-to-pull adhesive structure); the small handle is used to drag the easy-tear sticker to pull the battery out of the battery compartment; and the easy-tear sticker plays the role of fixing the battery, fixing the battery cell in the battery compartment, which is a one-time disassembly adhesive tape structure. At present, most of the small handle structures are located on both sides of the battery, and can be set independently of the easy-tear sticker, or designed as an integrated structure with the easy-tear sticker; the design of the small handle structure is relatively simple, but the structure of the easy-tear sticker must take into account the structural layout of the small handle, and the design is relatively complex. Summary of the invention

[0003] In view of this, the present application provides a battery cell and also provides an electronic device including the battery cell, which solves the problem that the arrangement of other structural parts in the battery cell needs to be affected by the layout of the small handle structure.

[0004] In order to achieve the above objectives, this application provides the following technical solutions:

[0005] A battery cell, comprising:

[0006] Battery cell body;

[0007] A circuit protection board, electrically connected to the tab of the battery cell body;

[0008] A protective member covers the circuit protection board, and a surface of the protective member away from the bottom wall of the battery compartment is provided with a removal slot and / or a handle.

[0009] Optionally, in the above battery core, the battery core further comprises an insulating protective layer; the insulating protective layer comprises a first part, a second part, and a third part which are sequentially connected as a whole;

[0010] The battery cell comprises a first surface close to the bottom wall of the battery compartment, a second surface away from the bottom wall of the battery compartment, a third surface from which the tab protrudes, and a fourth surface opposite to the third surface;

[0011] The second portion is coated on the first surface;

[0012] The first part is folded from the first surface to the second surface via the third surface, and the first part is provided with an escape opening for evacuating the taking-out slot and / or the handle;

[0013] The third portion is folded from the first surface to the second surface via the fourth surface.

[0014] Optionally, in the above-mentioned battery cell, the removal slot forms a removal space; the removal space has a removal wall on a side away from the bottom wall of the battery compartment; and the removal wall includes a solid portion and a notch portion.

[0015] Optionally, in the above battery cell, the notch portion has an opening, and the opening is located on a side of the removal wall away from the battery cell body.

[0016] Optionally, in the above battery cell,

[0017] A first chamfer (3113) is provided at the inflection point of the contour line of the notch;

[0018] and / or,

[0019] A second chamfer (3114) is provided at the junction between the opening and the solid portion;

[0020] and / or,

[0021] The outline of the notch is arc-shaped or U-shaped.

[0022] Optionally, in the above battery cell,

[0023] The wall thickness of the solid part is 0.8mm-1.5mm;

[0024] and / or,

[0025] The area of ​​the notch is 0.8cm2-1.3cm2.

[0026] Optionally, in the above battery cell,

[0027] The handle is fixed to the protective member;

[0028] and / or,

[0029] The handle is arranged in the taking-out slot.

[0030] Optionally, in the above battery cell, the handle is a flexible handle or a rigid handle.

[0031] Optionally, in the above-mentioned battery core, the insulating protective layer further includes two fourth parts which are integrally connected to both sides of the second part or both sides of the third part respectively;

[0032] The battery core comprises a fifth surface and a sixth surface which are opposite to each other;

[0033] The two fourth parts are respectively covered on the fifth surface and the sixth surface.

[0034] An electronic device comprises the battery cell described above; the battery cell is installed in the battery compartment.

[0035] In the battery cell and electronic device provided by the present application, a removal groove and / or a handle is formed on the surface of the protective part covering the circuit protection board away from the bottom wall of the battery compartment; after the protective part is injection molded, a removal groove and / or a handle that is integrally formed with the battery cell is naturally formed, and the removal groove and / or the handle serve as force points, which can be conveniently operated by the user to pull the battery cell out of the battery compartment; as above, there is no need to attach small handles and other structures on the surface of the battery cell, which effectively reduces the waste of consumables; at the same time, the arrangement of other structural parts on the surface of the battery cell is no longer restricted by the layout of the small handle structure, which effectively optimizes the manufacturing process of the battery cell. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are merely embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0037] Figure 1 It is a schematic diagram of the structure of a battery cell in the prior art;

[0038] Figure 2 It is a schematic diagram of the structure of the battery cell in this application;

[0039] Figure 3 An exploded diagram of the battery cell in this application;

[0040] Figure 4 It is a schematic diagram of the structure of the removal slot in this application;

[0041] Figure 5 for Figure 4 A partial enlarged view of the middle area A;

[0042] Figure 6 This is a schematic diagram of the structure of a removal tank in another embodiment of the present application;

[0043] Figure 7 for Figure 6 A partial enlarged view of the middle area B;

[0044] Figure 8 This is a schematic structural diagram of a handle in yet another embodiment of the present application;

[0045] Fig. 9 This is a schematic diagram of the structure of the insulating protective layer of the present application in an unfolded state;

[0046] Fig.10 This is a schematic diagram of the structure in which the insulating protective layer of the present application is not coated on the surface of the battery core.

[0047] Figure 1 middle:

[0048] 1', battery cell body; 2', protective part; 3', easy-tear sticker; 4', bottom insulation paper; 5', small handle.

[0049] Figure 2-Figure 10 middle:

[0050] 1. Battery body; 2. Circuit protection board; 3. Protective parts; 4. Insulation protection layer;

[0051] 31. Take-out slot; 32. Handle

[0052] 41. Part I; 42. Part II; 43. Part III; 44. Part IV;

[0053] 311. Remove the space; 312. Remove the wall;

[0054] 411. Avoidance;

[0055] 3121. Solid portion; 3122. Notch portion; 3123. First chamfer; 3124. Second chamfer. DETAILED DESCRIPTION

[0056] The present application provides a battery cell and also provides an electronic device including the battery cell.

[0057] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0058] like Figure 1 As shown, in the prior art, in order to ensure that the battery can be taken out of the battery compartment, a small handle 5' is provided; in order to bond and fix the battery cell in the battery compartment, an easy-tear sticker 3' (or an easy-to-pull adhesive structure) needs to be provided. Since the small handle 5' needs to be provided, the structural setting of the easy-tear sticker 3' must take into account the structural layout of the small handle 5', and the design is relatively complicated.

[0059] like Figure 2-10As shown, the application proposes a battery cell; the battery cell includes a battery cell body 1, a circuit protection board 2, and a protective member 3. The circuit protection board 2 is electrically connected to the tabs of the battery cell body 1; the circuit protection board 2 can monitor the performance parameters of the battery cell body 1 and play a role in safety protection. The protective member 3 is an injection molded structural member, which covers the circuit protection board 2. The surface of the protective member 3 away from the bottom wall of the battery compartment is provided with a removal groove 31 and / or a handle 32. The fingers are used to provide prying force and / or pulling force to the removal groove 31 and / or the handle 32 to pull the battery cell out of the battery compartment.

[0060] It should be noted that after the circuit protection board 2 is electrically connected to the tabs of the battery body 1, a fluid plastic raw material is poured on the circuit protection board 2 through an injection mold; after the plastic raw material solidifies, a protective part 3 with a fixed shape is obtained, which can perfectly cover the circuit protection board 2, forming a good safety protection effect on the circuit protection board 2, and effectively improving the service life of the circuit protection board 2.

[0061] The protective member 3 can be well formed into a desired shape of the removal groove 31 by injection molding, and the manufacturing process is convenient and fast, and / or the handle 32 and the protective member 3 can be integrally molded by injection molding.

[0062] After the protective part 3 is injection molded, a removal groove 31 and / or a handle 32 that are integrally formed with the battery cell are naturally formed; the removal groove 31 and / or the handle 32 serve as force points, which can be easily operated by the user to pull the battery cell out of the battery compartment. As mentioned above, the function of the removal groove 31 and / or the handle 32 is the same as that of the traditional small handle structure. The former is obtained by optimizing the structure of the protective part 3 at the head of the battery without adding additional parts. The protective part 3 is set to have a removal groove 31 and / or a handle 32, which can save the small handle parts, effectively reduce the waste of consumables, and achieve the purpose of structural simplification; at the same time, the setting of other structural parts on the surface of the battery cell, such as the easy-tear sticker, is no longer restricted by the layout of the small handle structure. The design is simple and convenient, and the manufacturing process of the battery cell is effectively optimized.

[0063] Please see attached Figure 1 In the prior art, the structural design of the easy-tear sticker must not only consider the spatial layout of the small handle 5', but also the layout of the bottom insulating paper 4'. The end surface from which the pole ear of the battery cell extends is the top surface of the battery cell; the bottom surface of the battery cell is arranged opposite to the top surface of the battery cell; the bottom of the battery cell, i.e., the part of the battery cell close to the bottom surface of the battery cell, the bottom insulating paper 4' is a rectangular structure with an open top surface, and the bottom insulating paper 4' is wrapped around the bottom of the battery cell to provide insulation protection for the bottom of the battery cell. In order to ensure the bonding and fixing effect of the battery cell in the battery compartment, the easy-tear sticker 3' needs to cover the surface of the battery cell close to the battery compartment as comprehensively as possible.

[0064] The overlap between the bottom insulating paper 4' and the easy-tear tape 3' in the prior art increases the size of the battery (i.e., the size of the battery in the thickness direction and the size of the battery in the width direction); if the bottom insulating paper 4' and the easy-tear tape 3' do not overlap, the bonding area of ​​the easy-tear tape 3' on the surface of the battery cell close to the battery compartment will be reduced; if the bottom insulating paper 4' and the easy-tear tape 3' just touch but do not overlap, the bonding area of ​​the battery cell close to the battery compartment surface can be maximized without increasing the size of the battery, but it puts forward high requirements on the process technology. The process requires that a certain gap between the bottom insulating paper 4' and the easy-tear tape 3' be controlled to compensate for the process tolerance.

[0065] The present application, on the basis of providing a removal slot 31 and / or a handle 32, omits the separate setting structure of the easy-tear sticker and the bottom insulating paper, and instead provides an integrated insulating protective layer 4, which optimizes the structural design of the easy-tear sticker and strikes a balance between maximizing the bonding area of ​​the easy-tear sticker on the surface of the battery cell close to the battery compartment and not increasing the battery size.

[0066] For details, please refer to the attached Figure 2-3 , 9-10, the outer surface of the battery cell is covered with an insulating protective layer 4. The insulating protective layer 4 includes a first part 41, a second part 42, and a third part 43 which are connected in sequence. The battery cell includes a first surface close to the bottom wall of the battery compartment, a second surface away from the bottom wall of the battery compartment, a third surface (i.e., the top surface) from which the pole ear extends, and a fourth surface (i.e., the bottom surface) opposite to the third surface. The second part 42 is coated on the first surface. The first part 41 is folded from the first surface to the second surface via the third surface, and the first part 41 is provided with an avoidance opening 411 for avoiding the removal groove 31 and / or the handle 32. The third part 43 is folded from the first surface to the second surface via the fourth surface.

[0067] It should be noted that the insulating protective layer 4 of the present application is made of a material with adhesive properties and insulating properties. It can be made of the bottom insulating paper material in the prior art, or an easy-to-tear material with good insulation properties.

[0068] The arrangement of the avoidance opening 411 of the first portion 41 can expose the taking-out slot 31 and / or the handle 32 without obstructing the operation of the user.

[0069] The insulating protective layer 4 of the present application has the functions of an easy-tear sticker and a tail insulating paper, which is equivalent to designing the easy-tear sticker and the tail insulating paper into one body, and adopts a head-to-tail U-shaped wrapping method for the battery cell along the direction of the head and tail of the battery cell (that is, the extension direction from the top surface to the bottom surface of the battery cell), which can not only protect the bottom of the battery cell, but also fully cover the first side of the battery cell, so as to maximize the contact area of ​​the battery in the battery compartment and fix it more firmly in the battery compartment.

[0070] Furthermore, the use of an integrated insulating protective layer 4 not only increases the bonding area to the first side of the battery cell, but also avoids the superposition of two material layers caused by the use of an easy-to-tear sticker and a tail insulating paper, thereby reducing the size of the battery cell in the thickness and width directions. The battery cell is reduced from three materials, namely, a small handle, an easy-to-tear sticker, and a tail insulating paper, to only one material, namely, the insulating protective layer 4, eliminating two material structures and achieving the purpose of reducing costs.

[0071] Please see attached Figure 3 , 9 -10, in some embodiments, the insulating protective layer 4 further includes two fourth portions 44 integrally connected to both sides of the second portion 42, or two fourth portions 44 integrally connected to both sides of the third portion 43. The battery cell includes a fifth surface and a sixth surface that are opposite to each other. The two fourth portions 44 are respectively coated on the fifth surface and the sixth surface to achieve circumferential coating of the bottom of the battery cell.

[0072] It should be noted that the portion of the battery cell close to the third surface is the bottom of the battery cell.

[0073] As described above, the integrated setting of the insulating protection layer 4 is achieved, and closed insulating protection can be provided to the bottom of the battery cell.

[0074] Please see attached Figure 4-7 In some embodiments of the present application, the extraction slot 31 includes an extraction space 311 formed inside the protective member 3 ; the extraction space 311 has an extraction wall 312 on one side away from the bottom wall of the battery compartment. The extraction wall 312 includes a solid portion 3121 and a notch portion 3122 .

[0075] It should be noted that the size of the removal space 311 needs to be controlled so that the depth of the removal space 311 does not interfere with the internal circuit protection board 2 and the circuit protection board 2 is not exposed.

[0076] The finger enters the removal space 311 through the notch portion 3122 , and then the fingernail extends into the removal space 311 corresponding to the solid portion 3121 . The solid portion 3121 provides a force point for the fingernail, and the fingernail pries the solid portion 3121 , thereby prying and pulling the battery cell out of the battery compartment.

[0077] The removal groove 31 in which the removal space 311 and the removal wall 312 cooperate is convenient for injection molding, occupies less battery cell space, and the removal operation of the battery cell is more convenient and faster.

[0078] Please see attached Figure 4-7 In some embodiments of the present application, the notch portion 3122 has an opening, and the opening is located on a side of the removal wall 312 away from the battery cell body 1 .

[0079] The removal space 311 is a space open on one side, the notch 3122 is a notch open on one side, and the opening of the removal space 311 and the opening of the notch 3122 are both located on the side of the protective member 3 away from the battery cell body 1; compared with the circumferentially closed structure, it is more convenient for injection molding and demolding.

[0080] Please see attached Figure 7 In some embodiments of the present application, a first chamfer 3123 is provided at the inflection point of the contour line of the notch 3122. Further, the first chamfer 3123 is a circular chamfer.

[0081] In some embodiments, a second chamfer 3124 is provided at the junction between the opening of the notch portion 3122 and the solid portion 3121. Further, the second chamfer 3124 is a circular chamfer.

[0082] As described above, the sharp edges and corners produced by the notch portion 3122 can be eliminated, thereby preventing puncture injuries to the fingers when the fingers are inserted.

[0083] Some are implemented, see the attached Figure 4-5 The profile of the notch 3122 may be an arc shape. Figure 6-7 The outline of the notch 3122 may also be U-shaped. As above, it is ensured that the removal space 311 corresponding to the notch 3122 can better fit the shape of the human finger, which is convenient for the finger insertion operation.

[0084] Of course, the shape of the contour line of the notch portion 3122 may also be other regular or irregular shapes, which can be flexibly adjusted according to actual conditions, as long as it can ensure that the finger can be inserted into the removal space 311. The setting of the shape of the contour line of the notch portion 3122 will not be repeated here.

[0085] In some embodiments of the present application, the wall thickness of the solid part 3121 is 0.8 mm-1.5 mm. As described above, the mechanical strength of the solid part 3121 can be ensured so that it can meet the pull-out force requirements of the battery cell.

[0086] In some embodiments, the size of the removal space 311 is the size of a normal fingernail, and the area of ​​the notch 3122 is 0.8 cm 2 -1.3cm 2 As described above, it is ensured that the finger can enter the removal space 311 through the notch portion 3122, and the nail or part of the finger can be extended into the removal space 311 corresponding to the solid portion 3121; the limitation of the removal space 311 and the opening size ensures that the finger can operate the removal slot 31 flexibly and conveniently.

[0087] Please see attached Figure 8In certain embodiments of the present application, the plastic protective member 3 no longer has a removal groove 31 , but a handle 32 is directly provided and fixed to the protective member 3 .

[0088] It should be noted that the handle 32 and the protective member 3 are an integral injection-molded structure. By pulling the handle 32 away from the battery compartment, the battery cell can be quickly removed from the battery compartment. This effectively enriches the structural types, and users can flexibly choose according to actual needs.

[0089] Alternatively, the plastic protective member 3 is provided with a take-out slot 31 and a handle 32 , and the handle 32 is fixed in the take-out slot 31 .

[0090] The removal groove 31 provides a space for accommodating the handle 32 so that the handle 32 does not expose the surface of the battery cell, does not occupy additional space of the battery cell, and has a small volume.

[0091] In some embodiments, the handle 32 is a flexible handle or a rigid handle. Further, the flexible handle is a string handle, etc., and the rigid handle is a wire handle, etc.

[0092] In summary, the present application also provides an electronic device; the electronic device comprises a battery compartment and the battery cell described above. The battery cell is installed in the battery compartment.

[0093] It should be noted that the electronic device may be a mobile phone, a tablet, a laptop computer, etc.

[0094] Since the electronic device has the battery cell described above, the beneficial effects of the battery cell on the electronic device can be found above and will not be described in detail here.

[0095] The components and devices involved in this application are only illustrative examples and are not intended to require or imply that they must be connected, arranged, and configured in the manner shown in the drawings. As will be appreciated by those skilled in the art, these components and devices can be connected, arranged, and configured in any manner. Words such as "including", "comprising", "having", etc. are open words, meaning "including but not limited to", and can be used interchangeably with them. The words "or" and "and" used here refer to the words "and / or" and can be used interchangeably with them, unless the context clearly indicates otherwise. The word "such as" used here refers to the phrase "such as but not limited to", and can be used interchangeably with it.

[0096] It should also be noted that in the device of the present application, each component can be decomposed and / or reassembled, and these decompositions and / or reassemblies should be regarded as equivalent solutions of the present application.

[0097] The above description of the disclosed aspects is provided to enable any person skilled in the art to make or use the present application. Various modifications to these aspects will be readily apparent to those skilled in the art, and the general principles defined herein may be applied to other aspects without departing from the scope of the present application. Therefore, the present application is not intended to be limited to the aspects shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

[0098] The above description has been given for the purpose of illustration and description. In addition, this description is not intended to limit the embodiments of the present application to the forms disclosed herein. Although multiple example aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, changes, additions and sub-combinations thereof.

[0099] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A battery cell, characterized in that: include: Battery cell body (1); A circuit protection board (2) electrically connected to the tab of the battery cell body (1); A protective member (3) covers the circuit protection board (2), and a surface of the protective member (3) away from the bottom wall of the battery compartment is provided with a removal slot (31) and / or a handle (32).

2. The battery cell according to claim 1, characterized in that: The battery core further comprises an insulating protective layer (4); the insulating protective layer (4) comprises a first part (41), a second part (42), and a third part (43) which are integrally connected in sequence; The battery cell comprises a first surface close to the bottom wall of the battery compartment, a second surface away from the bottom wall of the battery compartment, a third surface from which the tab protrudes, and a fourth surface opposite to the third surface; The second portion (42) covers the first surface; The first part (41) is folded from the first surface to the second surface via the third surface, and the first part (41) is provided with an escape opening (411) for evacuating the taking-out groove (31) and / or the handle (32); The third portion (43) is folded from the first surface to the second surface via the fourth surface.

3. The battery cell according to claim 1, characterized in that: The extraction groove (31) forms an extraction space (311); the extraction space (311) has an extraction wall (312) on one side away from the bottom wall of the battery compartment; the extraction wall (312) includes a solid portion (3121) and a notch portion (3122).

4. The battery cell according to claim 3, characterized in that: The notch portion (3122) has an opening, and the opening is located on a side of the extraction wall (312) away from the battery cell body (1).

5. The battery cell according to claim 4, characterized in that: A first chamfer (3113) is provided at the inflection point of the contour line of the notch portion (3122); and / or, A second chamfer (3114) is provided at the junction between the opening and the solid portion (3121); and / or, The outline of the notch (3122) is arc-shaped or U-shaped.

6. The battery cell according to claim 3, characterized in that: The wall thickness of the solid part (3121) is 0.8 mm to 1.5 mm; and / or, The area of ​​the notch (3122) is 0.8 cm 2 -1.3cm 2 .

7. The battery cell according to claim 1, characterized in that: The handle (32) is fixed to the protective member (3); and / or, The handle (32) is arranged in the taking-out groove (31).

8. The battery cell according to claim 1, characterized in that: The handle is a flexible handle or a rigid handle.

9. The battery cell according to claim 2, characterized in that: The insulating protective layer (4) further comprises two fourth parts (44) respectively connected integrally to two sides of the second part (42) or two sides of the third part (43); The battery core comprises a fifth surface and a sixth surface which are opposite to each other; The two fourth parts (44) are respectively covered on the fifth surface and the sixth surface.

10. An electronic device, characterized in that: It comprises a battery compartment and the battery cell according to any one of claims 1 to 9; the battery cell is installed in the battery compartment.

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