CN220873722U

CN220873722U - Battery and terminal

Info

Publication number: CN220873722U
Application number: CN202322436010.7U
Authority: CN
Inventors: 韩玲莉; 胡可心
Original assignee: Beijing Xiaomi Mobile Software Co Ltd
Current assignee: Beijing Xiaomi Mobile Software Co Ltd
Priority date: 2023-09-07
Filing date: 2023-09-07
Publication date: 2024-04-30
Anticipated expiration: 2033-09-07

Abstract

The disclosure provides a battery and a terminal, and belongs to the technical field of terminals. The battery comprises a first shell, a second shell and an electric core; the edge part of the second shell is connected with the edge part of the first shell, a first groove is formed in a part, which faces one side of the second shell and is not connected with the first shell, of the second shell, and an accommodating space is formed between the first shell and the second shell; the battery cell is located in the accommodating space. By adopting the method, the weight of the battery is reduced while the thickness of the part of the second shell connected with the first shell is not influenced.

Description

Battery and terminal

Technical Field

The disclosure relates to the technical field of terminals, in particular to a battery and a terminal.

Background

The battery of the terminal is connected with the middle frame of the terminal, so that the fixed connection of the battery in the terminal is realized.

The battery generally includes a first case, a second case, and a battery cell, and an edge portion of the first case is welded to an edge portion of the second case, thereby forming an accommodating space. The battery cell is arranged in the accommodating space. And welding and connecting the edge part of the first shell or the edge part of the second shell with the middle frame, thereby realizing the connection between the battery and the middle frame.

However, the first casing and the second casing need to be welded together, and the first casing and the second casing need to be welded together with the middle frame, so that the thickness of the welding part between the first casing and the second casing needs to be ensured to avoid breakage and damage during welding, and the weight of the battery is increased.

Disclosure of utility model

The embodiment of the disclosure provides a battery and a terminal, which can solve the technical problems in the related art, and the technical scheme of the battery and the terminal is as follows:

in one aspect, embodiments of the present disclosure provide a battery including a first housing, a second housing, and a battery cell;

The edge part of the second shell is connected with the edge part of the first shell, a first groove is formed in a part, which faces one side of the second shell and is not connected with the first shell, of the second shell, and an accommodating space is formed between the first shell and the second shell;

The battery cell is located in the accommodating space.

In one possible implementation, the battery cell is at least partially located in the first recess.

In one possible implementation, the second housing has a plurality of first grooves.

In one possible implementation, the side of the first housing facing the second housing and the part not connected to the second housing has a second groove.

In one possible implementation, the first housing includes a cover plate and a side plate;

The side plate is provided with an annular structure, a first end of the side plate is connected with the edge part of the cover plate, the other end of the side plate is provided with an outwardly extending flange convex edge, and the flange convex edge is connected with the edge part of the second shell.

In one possible implementation, the second housing has a flat plate structure, an edge portion of the flat plate structure is connected to the flange bead, and a central portion of the flat plate structure has the first groove.

In one possible implementation, the battery further includes a protection circuit board;

the protection circuit board is connected with the outer side wall of the first shell and is electrically connected with the battery cell.

In one possible implementation, the protection circuit board has a circuit board positive terminal and a circuit board negative terminal, and the cell has a cell positive terminal and a cell negative terminal;

The positive terminal of the circuit board is electrically connected with the positive terminal of the battery cell, and the negative terminal of the circuit board is electrically connected with the negative terminal of the battery cell.

In one possible implementation, the battery further comprises an insulating sleeve;

The first shell is provided with a through hole;

The insulating sleeve is positioned in the through hole and is connected with the first shell;

the positive terminal of the circuit board passes through the insulating sleeve and is electrically connected with the positive terminal of the battery core in the accommodating space.

In one possible implementation, the circuit board negative terminal and the cell negative terminal are both electrically connected to the first housing.

In one possible implementation, the battery further comprises a cap and an electrolyte;

The first shell is provided with a liquid injection hole, and the liquid injection hole is used for injecting the electrolyte into the accommodating space;

the cap is connected with the first shell and is used for blocking the liquid injection hole;

the electrolyte is positioned in the accommodating space and is fully contacted with the battery cell.

In another aspect, embodiments of the present disclosure provide a terminal comprising a center and a battery as described in any one of the above;

The middle frame is connected with the edge part of the first shell or the edge part of the second shell of the battery.

The technical scheme provided by the embodiment of the disclosure at least comprises the following beneficial effects:

The embodiment of the disclosure provides a battery, in which a first groove is provided at a portion of a side of a second housing facing a first housing and not connected to the first housing, thus reducing the weight of the battery, and since the first groove is not provided at a portion of the second housing connected to the first housing, the thickness of the portion of the second housing connected to the first housing is not reduced, and therefore, the arrangement of the first groove does not affect the portion of the second housing for connection.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings required for the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and other drawings may be obtained according to these drawings without inventive effort for a person of ordinary skill in the art.

Fig. 1 is a schematic structural view of a battery shown in an embodiment of the present disclosure;

fig. 2 is a schematic structural view of a battery shown in an embodiment of the present disclosure;

FIG. 3 is a schematic cross-sectional view of a battery shown in an embodiment of the present disclosure;

FIG. 4 is an enlarged partial schematic view of portion A of FIG. 3, shown in an embodiment of the present disclosure;

FIG. 5 is a schematic view of a second housing shown in an embodiment of the present disclosure;

fig. 6 is a schematic structural view of a first housing and a protection circuit board according to an embodiment of the present disclosure;

Fig. 7 is a schematic structural diagram of a first housing and a protection circuit board according to an embodiment of the disclosure.

Description of the drawings

1. A first housing; 2. a second housing; 3. a battery cell; 4. a protective circuit board; 5. an insulating sleeve; 6. capping;

11. a cover plate; 12. a side plate; 13. a through hole; 14. a liquid injection hole;

121. A flange collar;

21. a first groove;

41. a positive terminal of the circuit board; 42. a circuit board negative terminal;

10. A middle frame; 20. and a battery.

Detailed Description

For the purposes of clarity, technical solutions and advantages of the present disclosure, the following further details the embodiments of the present disclosure with reference to the accompanying drawings.

The presently disclosed embodiments provide a battery 20, as shown in fig. 1 and 2, the battery 20 including a first housing 1, a second housing 2, and a cell 3.

The edge portion of the second housing 2 is connected to the edge portion of the first housing 1, so that a receiving space is formed between the first housing 1 and the second housing 2 for receiving the battery cell 3.

In one possible implementation, the connection manner between the edge portion of the first housing 1 and the edge portion of the second housing 2 may be a welded connection, for example, a laser welded connection, or may be a welded connection in any other manner, which is not limited in the embodiments of the disclosure.

In one possible implementation, the shape of the first housing 1 and the second housing 2 may be any reasonable shape, for example, may be rectangular in shape as a whole, or circular in shape as a whole, etc., which is not limited by the embodiments of the present disclosure.

As shown in fig. 3, 4 and 5, the portion of the second housing 2 facing the first housing 1 and not connected to the first housing 1 has the first groove 21, so that the weight of the second housing 2 is reduced, thereby reducing the weight of the battery, and since the first groove is not provided at the portion of the second housing 2 connected to the first housing 1, the thickness of the portion of the second housing 2 connected to the first housing 1 is not reduced, and therefore, the provision of the first groove does not affect the connection portion of the second housing 2.

The second housing 2 may have only one first groove 21, or may have a plurality of first grooves 21, and the positions and the number of the first grooves 21 are not specifically limited in the embodiments of the present disclosure.

In one possible implementation, the battery cell 3 is at least partially located in the first recess 21, so that the accommodating space of the battery cell 3 can be increased by providing the first recess 21, thereby improving the battery capacity.

The shape of the first recess 21 may be any reasonable shape, which is not limited by the embodiment of the present disclosure. In one possible implementation, the shape of the first recess 21 may be adapted to the shape of the battery cell 3, and a portion of the battery cell 3 near the second housing 2 may be embedded in the first recess 21, thereby increasing the accommodation space of the battery cell 3 and thus increasing the battery capacity.

It will be appreciated that the first housing 1 and the second housing 2 may be any one of the two battery housings connected, which is not particularly limited to any one of the two battery housings, and thus, the first recess may be provided in any one of the two battery housings connected, thereby achieving an increase in the accommodation space and thus an increase in the battery capacity.

In one possible implementation manner, on the basis of the first groove on the second casing 2, a second groove is formed on a side, facing the second casing 2, of the first casing 1 and a part, which is not connected with the second casing 2, of the second casing, so that the weight of the battery is further reduced by reducing the weight of the first casing 1.

Likewise, the first housing 1 may have only one second groove or may have a plurality of second grooves, and the positions and the number of the second grooves are not particularly limited in the embodiments of the present disclosure.

In one possible implementation, the battery cell 3 is at least partially located in the second groove, so that the accommodating space can be further increased on the basis of the first groove 21, the battery capacity is improved, and the strength of the connecting part of the first casing 1 and the second casing 2 is not affected.

The shape of the second recess may also be any reasonable shape, which is not limited by the embodiments of the present disclosure. In one possible implementation, the shape of the second groove may be adapted to the shape of the battery cell 3, and a portion of the battery cell 3 close to the first housing 1 may be embedded in the second groove, thereby increasing the accommodation space of the battery cell 3 and thus increasing the battery capacity.

In the embodiment of the present disclosure, the structures of the first housing 1 and the second housing 2 may have various possibilities, and the following description will be made with one of the possible structures:

As shown in fig. 1, 2 and 4, the first housing 1 includes a cover plate 11 and a side plate 12.

The cover plate 11 has a flat plate structure, and the side plate 12 has an annular structure having opposite ends, i.e., a first end and a second end, in the axial direction.

The first end of the side plate 12 is connected to the edge portion of the cover plate 11, and the other end of the side plate 12 has an outwardly extending flange bead 121, and the flange bead 121 is connected to the edge portion of the second housing 2.

It will be appreciated that "outwardly extending" herein refers to extending in a direction opposite the center point of the annular structure of the side panels 12. Further, the flange 121 may be perpendicular to the side plate 12 and parallel to the cover plate 11, so that the flange 121 is more convenient to be welded to the edge of the second housing 1 and also convenient to be welded to the middle frame 10.

In one possible implementation, as shown in fig. 1, 2, 4 and 5, the second housing 2 has a flat plate structure, an edge portion of the flat plate structure of the second housing 2 is connected to the flange rim 121, and a central portion of the flat plate structure has the first groove 21.

Thus, the process of etching the first groove 21 on the second shell 2 with the flat plate structure is simpler and more convenient, and the production efficiency is improved.

It is to be understood that, for the first casing 1 having the above-described structure, the second casing 2 may have other reasonable structures other than the above-described flat plate structure, for example, the second casing 2 may have a cover plate and a side plate like the structure of the first casing 1, and the side plate 12 of the first casing 1 may be welded to the side plate of the second casing 2 when the first casing 1 and the second casing 2 are welded, or the like, and the structure of the second casing 2 connected to the first casing 1 having the above-described structure is not particularly limited in the embodiment of the present disclosure. The structure of the first housing 1 may be any other reasonable structure, and the embodiment of the present disclosure is not limited thereto.

The battery 20 provided in the embodiment of the present disclosure further includes a protection circuit board 4, as shown in fig. 6 and 7, where the protection circuit board 4 is connected to the outer sidewall of the first housing 1 and is electrically connected to the battery cell 3.

The battery core 3 is used for realizing a charging and discharging function, and the protection circuit board 4 is used for protecting the charging and discharging of the battery core 3, so that the phenomenon of overcharge or overdischarge is prevented, and the safety of the battery 20 is improved.

With the first case 1 having the above-described structure of the cover plate 11 and the side plate 12, the protection circuit board 4 may be connected to the outer side wall of one side of the side plate 12 of the first case 1.

In one possible implementation, the structural arrangement of the electrical connection between the protection circuit board 4 and the battery cell 3 may be as follows:

As shown in fig. 6 and 7, the protection circuit board 4 may have a circuit board positive terminal 41 and a circuit board negative terminal 42, and the battery cell 3 has a battery cell positive terminal (not shown) and a battery cell negative terminal (not shown).

The positive electrode terminal 41 of the circuit board is electrically connected with the positive electrode terminal of the battery cell, and the negative electrode terminal 42 of the circuit board is electrically connected with the negative electrode terminal of the battery cell, so that the electrical connection between the protection circuit board 4 and the battery cell 3 is realized.

Further, for the positive electrode: the first housing 1 has a through hole 13. The battery 20 may further include an insulating sleeve 5, where the insulating sleeve 5 is located in the through hole 13 and is connected to the first housing 1, that is, an outer sidewall of the insulating sleeve 5 is connected to an inner sidewall of the through hole 13, and a connection manner may be any reasonable manner, for example, may be an adhesive connection manner, etc., which is not limited in the embodiment of the present disclosure.

The positive terminal 41 of the circuit board passes through the insulating sleeve 5 and is electrically connected with the positive terminal of the battery core in the accommodating space. Thus, the insulation sleeve 5 can insulate the positive electrode terminal 41 from the first housing 1 while realizing the electrical connection between the positive electrode terminal 41 and the positive electrode terminal of the battery core, so as to avoid the electrical connection between the first housing 1 and the positive electrode terminal 41.

For the negative electrode: the circuit board negative electrode terminal 42 and the battery cell negative electrode terminal are electrically connected with the first casing 1.

Thus, the battery cell negative electrode terminal is electrically connected with the first casing 1, so that the first casing 1 is negatively charged as a whole, and the circuit board negative electrode terminal 42 is electrically connected with the first casing 1, so that the electrical connection between the battery cell negative electrode terminal and the circuit board negative electrode terminal 42 is realized through the first casing 1.

The circuit board negative electrode terminal 42 is connected to the first case 1 to achieve electrical connection, and thus the protection circuit board 4 can be fixed to the first case 1 by the connection between the circuit board negative electrode terminal 42 and the first case 1.

In addition, the battery cell negative electrode terminal is electrically connected with the first casing 1, so that the first casing 1 and the second casing 2 connected with the first casing 1 are integrally negatively charged, which is beneficial to preventing the electrolyte (which will be described later) in the accommodating space from corroding the first casing 1 and the second casing 2, thereby prolonging the service life and improving the service performance of the battery 20.

In the embodiment of the disclosure, the above structure is only one structure for realizing electrical connection, but may be other reasonable electrical connection structures, for example, the first housing 1 may further have a negative electrode through hole, the battery 20 includes two insulating sleeves 5, one insulating sleeve 5 is located in the through hole 13, the other insulating sleeve 5 is located in the negative electrode through hole and is connected with the first housing 1, and the circuit board negative electrode terminal 42 passes through the insulating sleeve 5 located in the negative electrode through hole and is electrically connected with the battery cell negative electrode terminal located in the accommodating space, and the embodiment of the disclosure is not limited thereto.

In the disclosed embodiment, the battery 20 further includes a cap 6 and an electrolyte (not shown), as shown in fig. 6 and 7.

The first housing 1 has a liquid filling hole 14, and the liquid filling hole 14 is used for filling electrolyte into the accommodating space. Namely: after the edge parts of the first shell 1 and the second shell 2 are welded and connected, electrolyte can be injected into the accommodating space formed between the first shell 1 and the second shell 1 through the liquid injection hole 14, and the electrolyte is positioned in the accommodating space and fully contacts with the battery cell 3, so that the charging and discharging functions of the battery cell 3 are realized.

The cap 6 is connected with the first housing 1 for blocking the liquid injection hole 14. Namely: after electrolyte is injected into the accommodating space, the cap 6 is connected with the part where the electrolyte injection hole 14 of the first shell 1 is located, so that the electrolyte injection hole 14 is plugged, and the electrolyte in the accommodating space is prevented from flowing out.

The cap 6 may be made of metal, and the connection between the cap 6 and the first housing 1 may be achieved by welding, or other connection methods, such as clamping, which is not limited in the embodiment of the disclosure.

The disclosed embodiments also provide a terminal comprising a center 10 and any of the above-described batteries 20. The middle frame 10 is connected to an edge portion of the first casing 1 or an edge portion of the second casing 2 of the battery 20.

In one possible implementation, the middle frame 10 may have a battery receiving groove in which the battery 20 is located, and the edge portion of the first case 1 or the edge portion of the second case 2 of the battery 20 may be connected to the middle frame 10 by welding.

the embodiment of the present disclosure provides a battery 20 in which a first groove 21 is provided at a portion of a side of a second housing 2 facing a first housing 1 and not connected to the first housing 1, thus reducing the weight of the battery, and since the first groove 21 is not provided at a portion of the second housing 2 connected to the first housing 1, the thickness of a portion of the second housing 2 connected to the first housing 1 is not reduced, and therefore, the provision of the first groove 21 does not affect a portion of the second housing 2 for connection.

The foregoing description of the preferred embodiments of the present disclosure is provided for the purpose of illustration only, and is not intended to limit the disclosure to the particular embodiments disclosed, but on the contrary, the intention is to cover all modifications, equivalents, alternatives, and alternatives falling within the spirit and principles of the disclosure.

Claims

1. A battery, characterized in that it comprises a first casing (1), a second casing (2) and an electric core (3);

The edge part of the second shell (2) is connected with the edge part of the first shell (1), one side of the second shell (2) facing the first shell (1) is provided with a first groove (21), and a containing space is formed between the first shell (1) and the second shell (2), wherein the part of the second shell is not connected with the first shell (1);

The battery cell (3) is positioned in the accommodating space.

2. The battery according to claim 1, characterized in that the cell (3) is at least partially located in the first recess (21).

3. The battery according to claim 1, characterized in that the second housing (2) has a plurality of first grooves (21).

4. The battery according to claim 1, characterized in that the side of the first housing (1) facing the second housing (2) and not connected to the second housing (2) has a second recess.

5. The battery according to claim 1, wherein the first case (1) includes a cover plate (11) and a side plate (12);

The side plate (12) is of an annular structure, a first end of the side plate (12) is connected with the edge part of the cover plate (11), the other end of the side plate (12) is provided with an outwardly extending flange convex edge (121), and the flange convex edge (121) is connected with the edge part of the second shell (2).

6. The battery according to claim 5, wherein the second case (2) has a flat plate structure, an edge portion of which is connected to the flange bead (121), and a center portion of which has the first groove (21).

7. The battery according to claim 1, characterized in that it further comprises a protective circuit board (4);

The protection circuit board (4) is connected with the outer side wall of the first shell (1) and is electrically connected with the battery cell (3).

8. The battery according to claim 7, characterized in that the protection circuit board (4) has a circuit board positive terminal (41) and a circuit board negative terminal (42), the cell (3) having a cell positive terminal and a cell negative terminal;

The positive terminal (41) of the circuit board is electrically connected with the positive terminal of the battery cell, and the negative terminal (42) of the circuit board is electrically connected with the negative terminal of the battery cell.

9. The battery according to claim 8, characterized in that it further comprises an insulating sleeve (5);

the first housing (1) has a through hole (13);

The insulating sleeve (5) is positioned in the through hole (13) and is connected with the first shell (1);

The positive terminal (41) of the circuit board passes through the insulating sleeve (5) and is electrically connected with the positive terminal of the battery core in the accommodating space.

10. The battery according to claim 8, wherein the circuit board negative terminal (42) and the cell negative terminal are electrically connected to the first case (1).

11. The battery according to claim 1, characterized in that it further comprises a cap (6) and an electrolyte;

The first housing (1) has a liquid injection hole (14), the liquid injection hole (14) being used for injecting the electrolyte into the accommodating space;

The cap (6) is connected with the first shell (1) and is used for blocking the liquid injection hole (14);

The electrolyte is positioned in the accommodating space and is fully contacted with the battery cell (3).

12. A terminal, characterized in that it comprises a central frame (10) and a battery (20) according to any one of claims 1-11;

The middle frame (10) is connected with the edge part of the first shell (1) or the edge part of the second shell (2) of the battery (20).