CN213816273U

CN213816273U - Battery with a battery cell

Info

Publication number: CN213816273U
Application number: CN202023214735.4U
Authority: CN
Inventors: 何伊; 张颖杰; 曾玉祥
Original assignee: Zhuhai Cosmx Battery Co Ltd
Current assignee: Zhuhai Cosmx Battery Co Ltd
Priority date: 2020-12-28
Filing date: 2020-12-28
Publication date: 2021-07-27
Anticipated expiration: 2030-12-28

Abstract

The utility model provides a battery relates to lithium ion battery technical field. The battery comprises a shell, an electric core, a first lug and a second lug, wherein the electric core is contained in the shell, the first lug and the second lug are connected to the same side of the electric core, the same side face of the shell is provided with a first through hole and a second through hole, one end of the first lug is connected with the electric core, the other end of the first lug extends out of the first through hole, one end of the second lug is connected with the electric core, and the other end of the second lug extends out of the second through hole. The utility model provides a technical scheme has solved current lithium ion button cell and has had the inconvenient problem of processing.

Description

Battery with a battery cell

Technical Field

The utility model relates to a lithium ion battery technical field especially relates to a battery.

Background

The existing lithium ion button battery generally welds the lug in the battery, and welding residues are easily left in the battery in the welding process, so that the performance of the battery is poor, the lug is welded in the battery, certain welding difficulty exists, and therefore the existing lithium ion button battery has the problem of inconvenient processing.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides a battery to there is the inconvenient problem of processing in the current lithium ion button cell of solution.

In a first aspect, an embodiment of the present invention provides a battery, including shell, electric core, first utmost point ear and second utmost point ear, electric core holding in the shell, first utmost point ear with the second utmost point ear is connected same one side of electric core, same side of shell is equipped with first through-hole and second through-hole, the one end of first utmost point ear with electric core is connected, the other end of first utmost point ear is followed first through-hole stretches out, the one end of second utmost point ear with electric core connects, the other end of second utmost point ear is followed the second through-hole stretches out.

Optionally, the tab connector further comprises a first cover plate, the first cover plate covers the first through hole and is insulated from the housing, and the other end of the first tab extends out of the first through hole and abuts against the first cover plate.

Optionally, the tab further comprises a second cover plate, the second cover plate covers the second through hole and is electrically connected with the housing, and the other end of the second tab extends out of the second through hole and abuts against the second cover plate.

Optionally, a first insulating sealing gasket is arranged between the first cover plate and the shell, a third through hole communicated with the first through hole is formed in the first insulating sealing gasket, and the first tab extends out of the third through hole and is abutted to the first cover plate.

Optionally, the second cover plate and the housing are welded.

Optionally, the housing includes a shell and a shell bottom plate, and the shell bottom plate are welded.

Optionally, the first cover plate is made of an aluminum alloy or stainless steel.

Optionally, the second cover plate is made of an aluminum alloy or stainless steel.

Optionally, the first cover plate has a thickness of 0.02mm to 1 mm.

Optionally, the second cover plate has a thickness of 0.02mm to 1 mm.

The embodiment of the utility model provides a battery, including shell, electric core, first utmost point ear and second utmost point ear, the electric core holding is in the shell, and first utmost point ear and second utmost point ear are connected in same one side of electric core, and same side of shell is equipped with first through-hole and second through-hole, and the one end and the electric core of first utmost point ear are connected, and the other end of first utmost point ear stretches out from first through-hole, and the one end and the electric core of second utmost point ear are connected, and the other end of second utmost point ear stretches out from the second through-hole. Like this, through being equipped with first through-hole and second through-hole, first utmost point ear and second utmost point ear are stretched out from first through-hole and second through-hole respectively, are convenient for at the first utmost point ear of the outside welding of shell and second utmost point ear, have promoted the convenience of the processing of battery, and simultaneously, can also avoid welding the dust and fall into inside electric core, have ensured the security of battery internal environment.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.

Fig. 1 is a schematic structural diagram of a battery provided in an embodiment of the present invention;

FIG. 2 is an enlarged view of the circled portion of FIG. 1;

fig. 3 is a schematic structural diagram of a housing of a battery according to an embodiment of the present invention.

Reference numerals:

100. a housing; 101. an electric core; 102. a first tab; 103. a second tab; 104. a first cover plate; 105. a second cover plate; 106. a first insulating gasket; 107. a first through hole; 108. a second through hole; 1001. a housing; 1002. a housing floor.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, of the embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by those of ordinary skill in the art to which the invention belongs. The use of "first," "second," and similar terms in the description herein do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships are changed accordingly.

Referring to fig. 1-3, an embodiment of the present invention provides a battery, including a housing 100, a battery cell 101, a first tab 102 and a second tab 103, the battery cell 101 is accommodated in the housing 100, the first tab 102 and the second tab 103 are connected to the same side of the battery cell 101, the same side of the housing 100 is provided with a first through hole 107 and a second through hole 108, one end of the first tab 102 is connected to the battery cell 101, the other end of the first tab 102 extends from the first through hole 107, one end of the second tab 103 is connected to the battery cell 101, and the other end of the second tab 103 extends from the second through hole 108.

In this embodiment, the battery cell 101 may be a columnar structure formed by winding or a columnar structure formed by stacking and laminating, which is only an example and is not limited, and the battery cell 101 may alternatively take other types of shapes.

In this embodiment, the other end of the first tab 102 extends out of the first through hole 107, which may mean that the first tab 102 is inserted into the first through hole 107, wherein the first tab 102 may completely pass through the first through hole 107 or may be flush with the first through hole 107, and the other end of the second tab 103 extends out of the second through hole 108. The second tab 103 may be inserted into the second through hole 108, wherein the second tab 103 may completely pass through the second through hole 108, or may be flush with the second through hole 108, which is merely an example and is not limited herein. The first tab 102 may be a positive tab, and the second tab 103 may be a negative tab.

Specifically, the housing 100 is a cylindrical thin-walled structure, which is only used as an example here, and the housing 100 may alternatively be a structure with other shapes, but no matter how the shape is changed, it is within the scope of the embodiments of the present application, and the housing 100 includes a housing 1001 and a housing bottom plate 1002, where the housing 1001 and the housing bottom plate 1002 are fixed together by laser welding to form a sealing structure.

In order to facilitate the accommodation of the battery cell 101 in the casing 100, one end of the casing 100 is completely opened, so that the battery cell 101 can be placed in the casing 100 from the opening. In addition, the first through hole 107 and the second through hole 108 are provided on the same side of the housing 100, and both the first through hole 107 and the second through hole 108 may be provided on the housing 1001, or both the first through hole 107 and the second through hole 108 may be provided on the housing bottom plate 1002.

In this embodiment, the first through hole 107 and the second through hole 108 may be circular, square, or have other shapes as long as the first tab 102 or the second tab 103 can be extended. Here, only an example is made, and no transformation is made.

Above-mentioned battery through being equipped with first through-hole 107 and second through-hole 108, first utmost point ear 102 and second utmost point ear 103 stretch out from first through-hole 107 and second through-hole 108 respectively, are convenient for weld first utmost point ear 102 and second utmost point ear 103 in the outside of shell 100, have promoted the convenience of processing of battery, and simultaneously, can also avoid the welding dust to fall into inside electric core 101, have ensured the security of battery internal environment.

In addition, by arranging the first through hole 107 and the second through hole 108, the first tab 102 and the second tab 103 are located in the same space as the wall of the housing 1001 of the casing 100, the thickness of the battery is not occupied, and the utilization rate of the internal space of the battery can be improved.

Optionally, the battery further includes a first cover plate 104, the first cover plate 104 covers the first through hole 107, the first cover plate 104 is insulated from the casing 100, and the other end of the first tab 102 extends from the first through hole 107 and abuts against the first cover plate 104.

In this embodiment, the first cover plate 104 may be conductive, and specifically, the material of the first cover plate 104 includes aluminum alloy or stainless steel. By way of example only, and not limitation, the material of the first cover plate 104 may alternatively be other types of conductive materials in other possible embodiments.

Optionally, the thickness of the first cover plate 104 is 0.02mm to 1 mm. The thickness of the first cover plate 104 can be adjusted within a certain range in other possible embodiments, but it is within the scope of the present invention to do any changes.

Specifically, one end of the first tab 102 is connected to the battery cell 101, and the other end of the first tab 102 extends out of the first through hole 107 to abut against the first cover plate 104, and the other end of the first tab 102 may be welded to the first cover plate 104 in a changeable manner, so that the first cover plate 104 can perform a conductive function.

Optionally, the battery further includes a second cover plate 105, the second cover plate 105 covers the second through hole 108, the second cover plate 105 is electrically connected to the housing 100, and the other end of the second tab 103 protrudes from the second through hole 108 to abut against the second cover plate 105.

In this embodiment, the second cover plate 105 may be conductive, and specifically, the material of which the second cover plate 105 is made includes aluminum alloy or stainless steel. By way of example only, and not limitation, the second cover plate 105 may alternatively be made of other types of conductive materials in other possible embodiments.

Optionally, the thickness of the second cover plate 105 is 0.02mm to 1 mm. The thickness of the second cover plate 105 can be adjusted within a certain range in other possible embodiments, but it is within the scope of the present invention to do any changes.

Specifically, one end of the second tab 103 is connected to the battery cell 101, and the other end of the second tab 103 extends out of the second through hole 108 and abuts against the second cover plate 105, and the other end of the second tab 103 may be welded to the second cover plate 105 in a changeable manner, so that the second cover plate 105 can perform a conductive function.

Optionally, a first insulating gasket 106 is disposed between the first cover plate 104 and the housing 100, the first cover plate 104 and the housing 100 are bonded in an insulating manner through the first insulating gasket 106, the first insulating gasket 106 is provided with a third through hole communicated with the first through hole 107, and the first tab 102 extends out of the third through hole and abuts against the first cover plate 104.

In this embodiment, the shape of the first insulating gasket 106 may be circular or square, which is only an example and is not limited herein. Specifically, the first insulating gasket 106 is provided with a third through hole communicating with the first through hole 107, so that the first tab 102 is conveniently extended out of the third through hole and abutted against the first cover plate 104, and insulation between the first cover plate 104 and the housing 100 can also be ensured.

Alternatively, the first insulating gasket 106 may be disposed between the first cover plate 104 and the housing 100 by heat sealing.

In one possible embodiment, when the above battery is manufactured, it can be realized based on the following manner.

The battery cell 101 is placed in the casing 100, and when the battery cell 101 is placed, the first tab 102 and the second tab 103 of the battery cell 101 are made to face the side of the casing 100 on which the first through hole 107 and the second through hole 108 are formed, so that the first tab 102 extends out of the first through hole 107, and the second tab 103 extends out of the second through hole 108. The housing 100 includes a housing 1001 and a housing bottom plate 1002, and the housing 1001 and the housing bottom plate 1002 are welded together by laser to be hermetically fixed. An insulating gasket is arranged between the first cover plate 104 and the housing 100, the first cover plate 104 and the first tab 102 are fixed together by laser welding, the second cover plate 105 and the second tab 103 are fixed together by laser welding, and the first cover plate 104, the insulating gasket and the housing 100 are sealed and fixed together by hot pressing, so that the first cover plate 104 and the housing 1001 are ensured to be in an open circuit state. The battery is subjected to a liquid injection process, and after the liquid injection, the second cover plate 105 and the case 100 are fixedly sealed together by laser welding. The first through hole 107 and the second through hole 108 provided in the housing 100 may be provided in the housing 1001 or the housing bottom plate 1002.

The above embodiments are only specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical scope of the present invention, and all should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. The battery is characterized by comprising a shell, a battery cell, a first lug and a second lug, wherein the battery cell is accommodated in the shell, the first lug and the second lug are connected to the same side of the battery cell, a first through hole and a second through hole are formed in the same side face of the shell, one end of the first lug is connected with the battery cell, the other end of the first lug extends out of the first through hole, one end of the second lug is connected with the battery cell, and the other end of the second lug extends out of the second through hole.

2. The battery of claim 1, further comprising a first cover plate covering the first through hole and insulated from the case, the other end of the first tab protruding from the first through hole to abut the first cover plate.

3. The battery of claim 2, further comprising a second cover plate covering the second through hole and electrically connected to the housing, the other end of the second tab protruding from the second through hole to abut the second cover plate.

4. The battery of claim 2, wherein a first insulating gasket is disposed between the first cover plate and the housing and the first cover plate and the housing are bonded together through the first insulating gasket, the first insulating gasket is provided with a third through hole communicating with the first through hole, and the first tab extends from the third through hole and abuts against the first cover plate.

5. The battery of claim 3, wherein the second cover plate and the housing are welded.

6. The battery of claim 1, wherein the housing comprises a shell and a shell floor, the shell and the shell floor being welded.

7. The battery of claim 2, wherein the first cover plate is made of a material including aluminum alloy or stainless steel.

8. The battery of claim 3, wherein the second cover plate is made of a material comprising an aluminum alloy or stainless steel.

9. The battery of claim 2, wherein the first cover plate has a thickness of 0.02mm to 1 mm.

10. The battery of claim 3, wherein the second cover plate has a thickness of 0.02mm to 1 mm.