WO2022206384A1

WO2022206384A1 - Battery

Info

Publication number: WO2022206384A1
Application number: PCT/CN2022/081084
Authority: WO
Inventors: 林鸿凯; 卫志达; 曾玉祥; 王永旺; 许德胜; 陈龙云
Original assignee: 珠海冠宇电池股份有限公司
Priority date: 2021-03-31
Filing date: 2022-03-16
Publication date: 2022-10-06
Also published as: CN214672771U

Abstract

Provided is a battery, comprising: a battery body, wherein one end of the battery body is provided with a first adapter fixing sheet, and the other end of the battery body is provided with a second adapter fixing sheet. The first adapter fixing sheet comprises a positioning segment and a first adapter sheet, and the positioning segment and the first adapter sheet are integrally connected so as to ensure the positioning accuracy of the first adapter sheet. The battery provided in the present application is used for at least solving the technical problem of the positioning accuracy of the welding of an adapter sheet in a battery body being difficult to ensure.

Description

a battery

This application claims the priority of the Chinese patent application with the application number 202120665368.5 and the application name "A kind of battery" filed with the China Patent Office on March 31, 2021, the entire contents of which are incorporated into this application by reference.

technical field

The present application relates to the technical field of batteries, and in particular, to a battery.

Background technique

With the wider application of smart wearable products, people's demand for small-sized lithium-ion button-type secondary rechargeable batteries is also growing. Lithium-ion button-type secondary rechargeable batteries are referred to as button-type lithium-ion batteries. Button-type lithium-ion batteries are convenient to carry and have high safety. They are more and more used in smart wearable products, such as wireless Bluetooth headsets.

In the battery, PACK is an indispensable part. The PACK of the battery can be realized by metal contact. In a button battery, the negative adapter is a transition metal sheet that supplies power to the battery on the negative side. The negative adapter is connected to the battery through wires. External electrical equipment connection. Generally, the battery adapter plate and the battery body are usually fixed by welding. Due to the angle between the positioning plate and the axis of the adapter plate, welding errors are caused, and it is difficult to ensure that the adapter plate is welded in the battery body. Positioning accuracy affects battery usage.

Therefore, it is promising to develop a battery that has a compact structure and can ensure the positioning accuracy of the adapter.

SUMMARY OF THE INVENTION

The present application provides a battery, which is used to at least solve the technical problem that it is difficult to guarantee the positioning accuracy of the adapter plate welded in the battery body.

In order to achieve the above purpose, the present application provides a battery, comprising: a battery body, one end of the battery body is provided with a first adapter fixing piece, the first adapter fixing piece includes a positioning segment and a first adapter piece, The positioning segment and the first transfer piece are integrally connected to ensure the positioning accuracy of the first transfer piece.

In the battery provided by the present application, since the positioning segment and the first adapter sheet are integrally connected, the welding error between the positioning segment and the first adapter sheet can be prevented from affecting the first adapter sheet The positioning accuracy ensures the relative position of the positioning segment and the first adapter piece, and reduces the difficulty of processing the battery. In addition, the positioning segment and the first transfer sheet are integrally connected, and the structure is compact, which is beneficial to improve the energy density of the battery.

In a possible implementation manner, the other end of the battery body is provided with a second adapter fixing piece, the second adapter fixing piece includes a welding section and a second adapter piece, the welding section and the The second transition piece is integrally connected to ensure the positioning accuracy of the second transition piece.

In a possible implementation manner, the positioning segment is fixed at one end of the battery body, and both ends of the positioning segment in the length direction extend out of both sides of the battery body, respectively.

In a possible implementation manner, one end of the positioning segment in the length direction has a protruding end, and the protruding end protrudes from the side surface of the battery body.

In a possible implementation manner, a connecting segment is connected to the other end of the positioning segment in the length direction, one end of the first transition piece is connected to the connecting segment, and the other end of the first transition piece is connected to the connecting segment. extending away from the side surface of the battery body.

In a possible implementation manner, the second transfer fixing piece further includes a vertical section, and the welding section and the second transfer piece are connected through the vertical section.

In a possible implementation manner, one end of the second transfer sheet extends in a direction away from the side surface of the battery body, and the other end of the second transfer sheet is connected to the vertical segment.

In a possible implementation manner, the battery further includes a first insulating glue and a second insulating glue, the first insulating glue is disposed at one end of the battery body, and the first insulating glue covers the on the positioning segment;

The second insulating glue is disposed on the other end of the battery body, and the second insulating glue covers the second transfer fixing sheet.

In a possible implementation manner, the battery further includes a third insulating glue, the third insulating glue is arranged on the side surface of the battery body, and the third insulating glue is separated between the vertical section and all the between the battery body. The provision of the third insulating glue can avoid short circuit during the use of the battery and improve the safety of use.

In a possible implementation manner, the battery body includes a case with an opening at one end, a battery cell disposed in the case, and a case cover assembly for encapsulating the battery cell;

The welding segment is provided on the casing cover assembly, and the positioning segment is provided on the bottom of the casing.

In the battery provided by the present application, since the positioning segment and the first adaptor are integrally connected, the welding error between the positioning segment and the first adaptor can be prevented from affecting the positioning of the first adaptor. The precision is reduced, the welding difficulty of the first transfer fixing piece is reduced, the production and manufacture of the battery is easy to be realized, and the yield of the battery is improved. The positioning segment and the first transfer piece are integrally connected, and the structure is compact, which is beneficial to improve the energy density of the battery.

In addition to the technical problems solved by the embodiments of the present application described above, the technical features constituting the technical solutions, and the beneficial effects brought about by the technical features of these technical solutions, the wearable oxygen inhalation nasal obstruction device provided by the embodiments of the present application can Other technical problems to be solved, other technical features included in the technical solution, and the beneficial effects brought about by these technical features will be described in further detail in the specific embodiments.

Description of drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are some embodiments of the present application, and for those of ordinary skill in the art, other drawings can also be obtained from these drawings without any creative effort.

1 is a schematic three-dimensional structure diagram of a battery provided by an embodiment of the present application;

FIG. 2 is another three-dimensional schematic diagram of the battery provided by the embodiment of the present application;

3 is a schematic diagram of a partial three-dimensional structure of a battery provided by an embodiment of the present application;

FIG. 4 is a schematic diagram of another partial three-dimensional structure of the battery provided by the embodiment of the present application;

FIG. 5 is another partial three-dimensional structural schematic diagram of the battery provided by the embodiment of the present application;

FIG. 6 is the top view of FIG. 5 of the battery provided by the embodiment of the present application;

FIG. 7 is a cross-sectional view of the A-A section of FIG. 6 of the battery provided by the embodiment of the present application;

FIG. 8 is an exploded view of the battery provided by the embodiment of the present application.

Description of reference numbers:

10-Battery body;

11 - shell;

111-accommodating cavity;

12-cell;

13-pp layer;

14-shell cover assembly;

141 - lower shell cover;

142 - upper shell cover;

15-sealing nails;

20 - the first insulating glue;

30-Second insulating glue;

40-The third insulating glue;

50-The first transfer fixing piece;

51 - positioning fragment;

52-connection segment;

53 - the first adapter;

54 - overhang;

60-Second transfer fixing piece;

61 - welding segment;

611 - extended end;

62 - vertical segment;

63-Second adapter.

Detailed ways

In order to make the purpose, technical solutions and advantages of the present application clearer, the technical solutions in the present application will be described clearly and completely below with reference to the accompanying drawings in the present application. Obviously, the described embodiments are part of the embodiments of the present application. , not all examples. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present application.

In a lithium ion battery, the negative electrode adapter is a transition metal sheet that supplies power to the outside of the battery body 10 on the negative electrode, and the negative electrode adapter is used as a pin and is connected to external electrical equipment through wires.

In the existing battery, the negative electrode adapter piece directly leads out the negative electrode nickel piece from one end of the battery body 10, and does not have a positioning structure. Therefore, in the existing battery, when the negative electrode adapter piece is welded on the battery body 10, it is difficult to accurately locate the negative electrode. The position of the nickel sheet affects the positional accuracy of the negative electrode adapter.

Referring to FIGS. 1 and 3 , the present application provides a battery, comprising: a battery body 10 , one end of the battery body 10 is provided with a first adapter fixing piece 50 , and the other end of the battery body 10 is provided with a second adapter fixing plate Sheet 60; the first adapter fixing sheet 50 includes a positioning segment 51 and a first adapter sheet 53, and the positioning segment 51 and the first adapter sheet 53 are integrally connected to prevent the positioning segment 51 and the first adapter sheet 53. The welding error affects the positioning accuracy of the first adapter piece 53 .

The first adapter fixing piece 50 is a negative electrode adapter fixing piece, the first adapter piece 53 is a negative electrode adapter piece, and the first adapter piece 53 is a negative electrode nickel piece.

In the battery provided by the present application, the positioning segment 51 and the first adapter sheet 53 are integrally connected, so as to avoid the welding error between the positioning segment 51 and the first adapter sheet 53 from affecting the positioning accuracy of the first adapter sheet 53, The relative positions of the positioning segment 51 and the first transfer piece 53 are ensured, the welding difficulty of the first transfer fixing piece 50 is reduced, the production and manufacture of the battery are facilitated, and the quality of the battery is improved. In addition, the positioning segment 51 and the first transfer piece 53 are integrally connected, so that the structure of the battery is compact, which is beneficial to improve the energy density of the battery.

Referring to FIGS. 2 and 4 , the second adapter fixing piece 60 includes a welding segment 61 and a second adapter piece 63 , and the welding segment 61 and the second adapter piece 63 are integrally connected to ensure the positioning accuracy.

The second adapter plate 60 is a positive adapter plate, and the second adapter plate 63 is a positive adapter plate.

The second transfer fixing piece 60 is electrically connected to the positive electrode tab of the battery body 10 .

In a possible implementation manner, as shown in FIG. 6 , the welding section 61 extends from the central position of the end face of the battery body 10 to the edge of the battery body 10 .

Referring to FIG. 6 , the part where the welding section 61 contacts the center of the end face of the battery body 10 is the enlarged end 611 . The enlarged end 611 expands the contact area with the end face of the battery body 10 by increasing the width, ensuring that the welding section 61 and the battery body are connected. 10 The end faces are fully contacted to avoid false welding, ensure the welding strength, and the welding is convenient and reliable.

In a possible implementation manner, as shown in FIG. 3 , the positioning segment 51 is fixed at one end of the battery body 10 , and both ends of the positioning segment 51 in the length direction respectively extend out of both sides of the battery body 10 to ensure that the positioning segment 51 It is fully in contact with one end of the battery body 10 to avoid virtual welding, ensure the welding strength, and facilitate and reliable welding.

It is easy to understand that the positioning segment 51 is electrically connected to the negative electrode tab of the battery body 10 .

The positioning segment 51 may be a flat structure, and the length of the positioning segment 51 is much larger than the width of the positioning segment 51 .

One end in the length direction of the positioning segment 51 has a protruding end 54 , and the protruding end 54 protrudes from the side surface of the battery body 10 .

The other end of the positioning segment 51 in the length direction is connected with a connecting segment 52 , one end of the first adapter piece 53 is connected with the connecting segment 52 , and the other end of the first adapter piece 53 extends away from the side of the battery body 10 .

In a possible implementation manner, as shown in FIG. 4 , the second adapter fixing piece 60 further includes a vertical section 62 , and the welding section 61 and the second adapter piece 63 are connected through the vertical section 62 . The second adapter plate 63 is a positive nickel plate.

One end of the second adapter piece 63 extends away from the side surface of the battery body 10 , and the other end of the second adapter piece 63 is connected to the vertical section 62 .

The position of the second transfer piece 63 is opposite to that of the first transfer piece 53 .

In a possible implementation manner, the second transfer sheet 63 is located below the first transfer sheet 53 , and the second transfer sheet 63 and the first transfer sheet 53 are spaced apart from each other.

Referring to FIG. 1 and FIG. 2 , the battery provided by the present application further includes a first insulating glue 20 and a second insulating glue 30 , the first insulating glue 20 is arranged at one end of the battery body 10 , and the first insulating glue 20 covers the positioning On the segment 51 ; the second insulating adhesive 30 is disposed on the other end of the battery body 10 , and the second insulating adhesive 30 covers the second transfer fixing sheet 60 .

Both the first insulating adhesive 20 and the second insulating adhesive 30 may be insulating adhesive paper.

The first transfer fixing piece 50 can be connected to the battery body 10 by means of laser welding.

In a possible implementation manner, the positioning segment 51 is connected to one end of the battery body 10 by welding. Therefore, setting the first insulating glue 20 to cover the positioning segment 51 can avoid the occurrence of welding of the first transfer fixing piece 50 . The welding debris is not cleaned up, causing a short circuit during battery use, avoiding safety problems.

In a possible implementation manner, the second transfer fixing sheet 60 can be connected to the battery body 10 by means of laser welding, and the second insulating glue 30 is arranged to cover the second transfer fixing sheet 60 to avoid welding the second transfer fixing sheet 60 . The welding debris generated when the fixing sheet 60 is transferred causes a short circuit during use of the battery, thereby improving the use safety.

Referring to FIGS. 4 and 5 , the battery provided by the present application further includes a third insulating glue 40 , the third insulating glue 40 is arranged on the side of the battery body 10 , and the third insulating glue 40 is separated between the vertical section 62 and the battery body between 10. The provision of the third insulating glue 40 can avoid short circuit during the use of the battery and improve the safety of use.

The third insulating adhesive 40 may be insulating adhesive paper.

In a possible implementation manner, as shown in FIG. 7 and FIG. 8 , the battery body 10 includes a case 11 with an opening at one end, a battery cell 12 disposed in the case 11 , and a case cover assembly for encapsulating the battery cell 12 14; the welding segment 61 is arranged on the cover assembly 14, and the positioning segment 51 is arranged at the bottom of the housing 11.

The housing 11 has an accommodating cavity 111 , and the battery cells 12 are located in the accommodating cavity 111 .

The casing 11 is not limited to be cylindrical, and of course the casing 11 may be cubic.

The case cover assembly 14 includes a lower case cover 141 and an upper case cover 142, the lower case cover 141 is disposed on the opening of the case 11, the upper case cover 142 is disposed on the lower case cover 141, and the upper case cover 142 and the lower case cover 141 The pp layer 13 is arranged therebetween, a sealing nail 15 is arranged in the center of the upper surface of the upper case cover 142 , the accommodating cavity 111 is also filled with electrolyte, and the battery core 12 is immersed in the electrolyte.

The welding section 61 of the second adapter fixing piece 60 may be connected to the upper case cover 142 of the case cover assembly 14 by means of laser welding. The positioning segment 51 can be connected to the bottom of the housing 11 by means of laser welding.

In the battery provided in this embodiment, the second transfer fixing piece 60 is welded on the top of the battery body 10 , and the first transfer fixing piece 50 is welded on the bottom of the battery body 10 to facilitate welding work.

In a battery provided in this embodiment, the positioning segment 51 and the first adapter sheet 53 are integrally connected, so as to avoid the welding error between the positioning segment 51 and the first adapter sheet 53 from affecting the positioning of the first adapter sheet 53 The accuracy is reduced, the welding difficulty of the first transfer fixing piece 50 is reduced, and the yield of the battery is improved. The structure of the battery can also be made compact, which is beneficial to improve the energy density of the battery.

In the description of this application, it is to be understood that the terms "center", "length", "width", "thickness", "top", "bottom", "upper", "lower", " "Left", "right", "front", "rear", "vertical", "horizontal", "inner", "outer", "axial", "circumferential" and other indications of orientation or positional relationship are based on the accompanying drawings The orientation or positional relationship shown is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the indicated position or the original must have a specific orientation, a specific structure and operation, and therefore should not be construed as a reference to the present application. limit.

In addition, the terms "first" and "second" are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, a feature delimited with "first", "second" may expressly or implicitly include one or more of that feature. In the description of this application, "plurality" means at least two, such as two, three, etc., unless otherwise expressly and specifically defined.

In this application, unless otherwise expressly specified and limited, the terms "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection, or It can be a mechanical connection or an electrical connection or can communicate with each other; it can be directly connected or indirectly connected through an intermediate medium, and it can make the internal communication of two elements or the interaction relationship between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific situations.

In this application, unless otherwise expressly specified and defined, a first feature "on" or "under" a second feature may include direct contact between the first and second features, or may include the first and second features Not directly but through additional features between them. Also, the first feature being "above", "over" and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is level higher than the second feature. The first feature is "below", "below" and "below" the second feature includes the first feature is directly below and diagonally below the second feature, or simply means that the first feature has a lower level than the second feature.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: The technical solutions described in the foregoing embodiments can still be modified, or some or all of the technical features thereof can be equivalently replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the technical solutions of the embodiments of the present application. scope.

Claims

A battery, characterized by comprising: a battery body (10), one end of the battery body (10) is provided with a first adapter fixing piece (50), the first adapter fixing piece (50) includes a positioning The segment (51) and the first adapter piece (53), the positioning segment (51) and the first adapter piece (53) are integrally connected to ensure the positioning accuracy of the first adapter piece (53) .
The battery according to claim 1, characterized in that, the other end of the battery body (10) is provided with a second adapter fixing piece (60), and the second adapter fixing piece (60) includes a welding section ( 61) and the second adapter piece (63), the welding section (61) and the second adapter piece (63) are integrally connected to ensure the positioning accuracy of the second adapter piece (63).
The battery according to any one of claims 1-2, characterized in that the positioning segment (51) is fixed at one end of the battery body (10), and both ends of the positioning segment (51) in the length direction The two sides of the battery body (10) are respectively extended.
The battery according to any one of claims 1-2, characterized in that, one end of the positioning segment (51) in the length direction has a protruding end (54), and the protruding end (54) protrudes out of the battery body ( 10) side.
The battery according to claim 1, characterized in that a connecting segment (52) is connected to the other end of the positioning segment (51) in the length direction, and one end of the first adapter plate (53) is connected to the connecting segment (52). The segments (52) are connected, and the other end of the first adapter plate (53) extends in a direction away from the side surface of the battery body (10).
The battery according to claim 2, characterized in that, the second transfer fixing piece (60) further comprises a vertical section (62), and the welding section (61) and the second transfer piece (63) pass through The vertical sections (62) are connected.
The battery according to claim 6, characterized in that, one end of the second adapter plate (63) extends in a direction away from the side surface of the battery body (10), and the second adapter plate (63) has an end. The other end is connected with the vertical section (62).
The battery according to claim 2, characterized in that further comprising a first insulating glue (20) and a second insulating glue (30), the first insulating glue (20) being disposed on the battery body (10) one end, and the first insulating glue (20) covers the positioning segment (51);

The second insulating glue (30) is arranged on the other end of the battery body (10), and the second insulating glue (30) covers the second transfer fixing sheet (60).
The battery according to claim 6, further comprising a third insulating glue (40), the third insulating glue (40) is disposed on the side surface of the battery body (10), and the third insulating glue (40) is The glue (40) is separated between the vertical section (62) and the battery body (10).
The battery according to claim 2, characterized in that, the battery body (10) comprises a casing (11) with an opening at one end, a battery cell (12) disposed in the casing (11), and a package a cover assembly (14) of the battery cell (12);

The welding segment (61) is arranged on the casing cover assembly (14), and the positioning segment (51) is arranged at the bottom of the casing (11).