CN215342690U - Battery with a battery cell - Google Patents

Abstract

The utility model provides a battery. The battery comprises a battery body and an adapter plate, wherein the battery body comprises a lower shell and a cover plate assembly arranged at the top of the lower shell through an insulating cover, the battery body also comprises a first tab and a second tab which have opposite polarities, the cover plate assembly is electrically connected with the first tab, and the lower shell is electrically connected with the second tab; the adapter plate is connected to the top side of the cover plate assembly; the first surface of the adapter piece facing the battery body is also provided with an insulating layer, and the arrangement position of the insulating layer corresponds to the junction area of the lower shell and the cover plate assembly. The safety of the connection between the adapter plate and the battery is higher.

Description

Battery with a battery cell

Technical Field

The utility model relates to the technical field of batteries, in particular to a battery.

Background

Along with the development of economy and the progress of science and technology, intelligent products are more and more developed towards the direction of lightness and miniaturization, and button cells capable of being repeatedly charged and used in a circulating mode are gradually applied to various fields of daily life of people.

The existing button cell comprises a metal shell, at least two adapter plates, a positive tab and a negative tab which are arranged in the metal shell, and the like. Still be equipped with the notes liquid mouth that supplies electrolyte to pour into on one side of casing top, be equipped with the apron subassembly that is used for sealing notes liquid mouth on the top side upper cover of annotating the liquid mouth, apron subassembly and anodal ear welded connection, casing and negative pole ear welded connection, the apron subassembly is as the positive pole of battery, and the casing uses as the negative pole of battery. The cover plate assembly is connected with the positive adapter plate in a welded mode, the shell is connected with the negative adapter plate in a welded mode, and therefore the positive pole and the negative pole of the battery can be connected with an external circuit through the corresponding adapter plates.

However, when the positive electrode adapter sheet is connected to the cover plate assembly, the part of the positive electrode adapter sheet structure departing from the liquid injection hole is positioned on the top side of the boundary position of the cover plate assembly and the shell, and is easy to contact with the shell, so that the positive electrode and the negative electrode of the battery are short-circuited, and the safety of the battery is low.

SUMMERY OF THE UTILITY MODEL

In view of the above problem, an embodiment of the present application provides a battery, where an insulating layer is disposed on an interposer, so that the connection safety between the interposer and the battery is high.

In order to achieve the above object, the present application provides a battery, including a battery body and an interposer, where the battery body includes a lower case and a cover plate assembly disposed on the top of the lower case, the battery body further includes a first tab and a second tab with opposite polarities, the cover plate assembly is electrically connected to the first tab, and the lower case is electrically connected to the second tab; the adapter plate is connected to the top side of the cover plate assembly;

the first surface of the adapter piece facing the battery body is also provided with an insulating layer, and the arrangement position of the insulating layer corresponds to the junction area of the lower shell and the cover plate assembly.

In an alternative embodiment, the lower shell is a cover-shaped piece, the top end part of the side wall of the cover-shaped piece is provided with a flange extending towards the inner side of the lower shell, and the cover plate component is lapped on the flange; the position of the insulating layer corresponds to the edge of the cover plate component.

In an alternative embodiment, the adapter plate is attached to the cover plate assembly by means of an electrically conductive adhesive.

In an alternative embodiment, the first surface of the interposer is provided with at least one groove for accommodating the conductive adhesive.

In an alternative embodiment, the cover plate assembly comprises an upper cover plate and a sealing piece, wherein the upper cover plate is provided with an opening, and the sealing piece is covered on the opening edge part of the opening to close the opening;

the at least one groove comprises a first groove and a second groove, the first groove is arranged at a position corresponding to the upper cover plate, and the second groove is arranged at a position corresponding to the sealing piece and/or the sealing piece.

In an alternative embodiment, the first surface has a first contact portion thereon, the first contact portion being located between the first recess and the second recess, the first contact portion being in contact with the upper cover plate.

In an alternative embodiment, the first surface is further provided with a second contact portion, the second contact portion is located between the insulating layer and the second groove, and the second contact portion is in contact with the sealing member and/or the upper cover plate.

In an alternative embodiment, the grooves penetrate both width-direction end sides of the interposer.

In an alternative embodiment, the insulating layer is an insulating glue.

In an alternative embodiment, the insulating layer is arranged along the entire circumference of the interposer.

In an alternative embodiment, the recess is formed by stamping.

The battery comprises a battery body and an adapter plate, wherein the battery body comprises a lower shell and a cover plate assembly, the cover plate assembly is arranged at the top of the lower shell through an insulating cover, the battery body further comprises a first tab and a second tab which are opposite in polarity, the cover plate assembly is electrically connected with the first tab, and the lower shell is electrically connected with the second tab; the adapter plate is connected to the top side of the cover plate assembly, an insulating layer is further arranged on the first surface, facing the battery body, of the adapter plate, and the setting position of the insulating layer corresponds to the junction area of the lower shell and the cover plate assembly. In the above scheme, the cover plate assembly is electrically connected with the first tab, the lower shell is electrically connected with the second tab, therefore, the boundary area of the lower shell and the cover plate assembly is the boundary area of the anode and the cathode of the battery, the setting position of the insulating layer on the switching sheet corresponds to the boundary area, even if the switching sheet contacts the boundary area, the lower shell and the cover plate assembly cannot be conducted due to the existence of the insulating layer, the anode and the cathode of the battery cannot be short-circuited, and therefore the connection safety of the switching sheet and the battery is high.

The construction and other objects and advantages of the present invention will be more apparent from the description of the preferred embodiments taken in conjunction with the accompanying drawings.

Drawings

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

fig. 2 is a schematic structural diagram of a transfer tab in a battery according to an embodiment of the present disclosure;

fig. 3 is a top view of a battery provided in an embodiment of the present application;

FIG. 4 is a cross-sectional view taken along line A-A of FIG. 3;

fig. 5 is a schematic perspective view of another angle of a transfer tab in a battery according to an embodiment of the present disclosure;

fig. 6 is a perspective view of another angle of the battery provided in the embodiment of the present application.

Description of reference numerals:

100-a battery;

10-a battery body;

11-a lower housing;

111-flanging;

12-a cover plate assembly;

121-upper cover plate;

122-a closure;

20-an adaptor sheet;

21-a groove;

211 — a first recess;

212-a second groove;

213-first contact;

214-a second contact;

22-conductive glue;

23-insulating layer.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The problem of lower reliability exists in the adaptor piece of current battery. This is due to: in the existing battery, the cover plate assembly is used as the positive pole of the battery, the shell is used as the negative pole of the battery, and when the positive pole switching piece is connected to the cover plate assembly, the part of the structure of the positive pole switching piece, which deviates from the liquid injection hole, is positioned on the top side of the junction position of the cover plate assembly and the shell and is easy to contact with the shell, so that the positive pole and the negative pole of the battery are short-circuited, and the safety of the battery is low.

And this application is through setting up the insulating layer on the switching piece, even the switching piece contacts the boundary region of casing and apron subassembly down, also can not make casing and apron subassembly switch on down because the isolation of insulating layer to the switching piece is higher with the security of being connected of battery.

In addition, the application also provides a new mode of bonding connection of the adapter plate and the battery body, the connection mode is simple, and welding marks on the sealing piece cannot influence the bonding connection, so that the reliability of connection of the adapter plate and the battery body is further improved.

The following describes a battery according to an embodiment of the present application with reference to the drawings.

Fig. 1 is a schematic structural diagram of a battery provided in an embodiment of the present application, and fig. 2 is a schematic structural diagram of a transfer tab in a battery provided in an embodiment of the present application.

Referring to fig. 1 and 2, a battery 100 of the present application includes a battery body 10 and an interposer 20, the battery body 10 includes a lower case 11 and a cover plate assembly 12 covering the top of the lower case 11, the battery body 10 further includes a first tab and a second tab (not shown) with opposite polarities, the cover plate assembly 12 is electrically connected to the first tab, and the lower case 11 is electrically connected to the second tab; the adaptor sheet 20 is connected to the top side of the cover plate assembly 12, an insulating layer 23 is further disposed on a first surface of the adaptor sheet 20 facing the battery body 10, and a position of the insulating layer 23 corresponds to a boundary area between the lower housing 11 and the cover plate assembly 12.

In the above solution, the cover plate assembly 12 is electrically connected to the first tab, and the lower housing 11 is electrically connected to the second tab, so that the boundary area between the lower housing 11 and the cover plate assembly 12 is the boundary area between the positive electrode and the negative electrode of the battery 100, and the position of the insulating layer 23 on the interposer 20 corresponds to the boundary area, which can prevent the interposer 20 from contacting the lower housing 11 and the cover plate assembly 12 at the same time to cause short circuit. In other words, even if the interposer 20 contacts the boundary area, the insulating layer 23 does not conduct the lower case 11 and the cover assembly 12, and the positive electrode and the negative electrode of the battery 100 are not short-circuited, so that the interposer 20 and the battery 100 are highly safe to connect.

It should be noted that, in the present application, the battery 100 is described as a button battery, but the present application is not limited thereto, and the type of the battery 100 may be other. The material of the conductive adhesive 22 can be selected from materials with good conductivity and adhesiveness, such as carbon conductive adhesive tape.

The interposer 20 may be made of nickel, or made of aluminum or nickel. The thickness of the interposer 20 can be selected from 0.08mm to 0.20 mm. The interposer 20 is used to connect the positive electrode of the battery body 10 to an external circuit, or the interposer 20 may also be used to connect the negative electrode of the battery body 10 to the external circuit.

The first tab may be a positive tab, and the second tab may be a negative tab, such that the cover plate assembly 12 is a positive electrode of the battery body 10, and the lower housing 11 is a negative electrode of the battery body 10, in this embodiment, the cover plate assembly 12 is disposed on the top of the lower housing 11 in an insulating manner, and the adapter plate 20 is located on the top side of the cover plate assembly 12 to be electrically connected to the cover plate assembly 12 serving as the positive electrode.

In the embodiment of the present application, the interposer 20 is bonded to the cover assembly 12 by conductive adhesive. In this way, the connection mode is simple, the bonding connection mode does not need welding connection, and even if the connection position of the adapter sheet 20 overlaps with the welding mark on the cover plate assembly 12, the welding mark does not affect the bonding connection, so that the reliability of the connection between the adapter sheet 20 and the battery body 10 is high.

The type of the conductive adhesive is not limited in the present application, and any adhesive may be used as long as the adhesive has a certain conductivity after being cured or dried, and for example, the conductive adhesive may be selected from at least one of a silver-based conductive adhesive, a gold-based conductive adhesive, a copper-based conductive adhesive, and a carbon-based conductive adhesive according to the type of the conductive particles in the conductive adhesive.

Optionally, at least one groove 21 is formed on a first surface of the interposer 20 facing the battery body 10, a conductive adhesive 22 is accommodated in the groove 21, and the interposer 20 can be adhered to the cover plate assembly 12 through the conductive adhesive 22 disposed between the groove 21 and the cover plate assembly 12. The setting of recess 21 is convenient for on the one hand the liquid conducting resin 22 of holding, prevents that conducting resin 22 from flowing all around, and on the other hand, the relative positioning of adaptor piece 20 and apron subassembly 12 of being convenient for.

Alternatively, the recess 21 may be formed by stamping, which makes the manufacture of the adapter plate 20 simpler.

Further, for convenience of processing, the grooves 21 may be formed to penetrate both end portions of the interposer 20 in the width direction.

Fig. 3 is a top view of a battery provided in an embodiment of the present application, fig. 4 is a cross-sectional view taken along line a-a of fig. 3, fig. 5 is a perspective view of another angle of a transfer tab in the battery provided in an embodiment of the present application, and fig. 6 is a perspective view of another angle of the battery provided in an embodiment of the present application.

Referring to fig. 4 and 6, the lower case 11 may be a cover, and the top end portion of the side wall of the cover may have a flange 111 extending toward the inside of the lower case 11, the cover 12 may be overlapped on the flange 111, and the cover 12 may be adhered to the flange 111 by, for example, an insulating adhesive. Here, the burring 111 may be formed integrally with the cover-shaped lower case 11, or may be formed separately from the cover-shaped lower case 11 and then coupled thereto.

Since the lower case 11 is the negative electrode of the battery body 10 and the cover plate assembly 12 is the positive electrode of the battery body 10, the cover plate assembly 12 may be bonded to the flange 111 by an insulating adhesive in order to avoid short circuit between the positive electrode and the negative electrode.

It should be noted that, after the adaptor sheet 20 is adhered to the top of the cover plate assembly 12, the position of the adaptor sheet 20 corresponding to the interface area between the flange 111 and the cover plate assembly 12 is easily contacted with the flange 111 and the cover plate assembly 12 at the same time, so as to cause short circuit.

Specifically, referring to fig. 2, 3 and 5, the insulating layer 23 covers at least a partial area of the first surface, and the insulating layer 23 is disposed at a position corresponding to an edge portion of the cover plate assembly 12.

Further, optionally, the insulating layer 23 is located at the side of the first recess 211 and the second recess 212 in the length direction of the interposer 20.

Here, the edge of the cover plate assembly 12 is the area where the cover plate assembly 12 and the flange 111 meet. In the embodiment of the present application, the insulating layer 23 may be disposed along the entire circumference of the interposer 20 in addition to covering a partial region of the first surface, that is, the insulating layer 23 is disposed around the turn of the interposer 20, which may make the insulation more reliable.

Optionally, the insulating layer 23 may be an insulating adhesive, and during actual setting, the insulating adhesive is coated on the interposer 20, so that the insulating layer 23 is simpler to set. It is understood that the embodiment of the present application is not limited thereto, and the insulating layer 23 may also be a coating layer made of other materials.

With continued reference to fig. 4, the cover assembly 12 may include an upper cover 121 and a sealing member 122, the upper cover 121 is provided with an opening, the sealing member 122 covers the edge of the opening to close the opening, where the opening is a liquid filling port of the battery body 10, during the manufacturing process of the battery 100, the electrolyte may enter the lower case 11 through the liquid filling port, and the sealing member 122 covers the opening to close the electrolyte in the battery body 10.

Here, the number of the grooves 21 may be set as needed, and the number of the grooves 21 is illustrated as two in fig. 1 and 2.

Specifically, referring to fig. 3 and 4, the at least one groove 21 includes a first groove 211 and a second groove 212, the first groove 211 is disposed at a position corresponding to the upper cover 121, and the second groove 212 is disposed at a position corresponding to the sealing member 122, such that the conductive adhesive 22 disposed in the first groove 211 bonds the upper cover 121 and the interposer 20, and the conductive adhesive 22 disposed in the second groove 212 bonds the sealing member 122 and the interposer 20. That is, the battery body 10 is connected to the interposer 20 at two positions, i.e., the upper cover 121 and the sealing member 122.

In addition, optionally, the first surface has a first contact portion 213 thereon, the first contact portion 213 is located between the first recess 211 and the second recess 212, and the first contact portion 213 is in contact with the upper cover 121. When the interposer 20 is connected to the cap assembly 12 through the conductive adhesive 22, there may be a problem that the resistance of the conductive adhesive 22 is large, which affects the resistance characteristics of the battery 100. In order to avoid this problem, the first contact portion 213 is disposed between the first recess 211 and the second recess 212 of the interposer 20 and directly contacts the upper cover 121 and/or the sealing member 122, so that there is a region on the interposer 20 that can directly contact the upper cover 121, and the metal interposer 20 directly contacts the upper cover 121 (corresponding to the positive electrode of the battery body 10), thereby reducing the influence of the conductive adhesive 22 on the resistance performance of the battery 100.

Here, the first contact portion 213 may protrude from other regions on the first surface of the interposer 20, so that even if the thickness of the conductive adhesive 22 is thick, the first contact portion 213 can be ensured to be in good contact with the upper cover 121 when protruding the accommodation range of the recess 21 and abutting on the upper cover 121. Alternatively, the first contact portion 213 and the other area on the first surface of the interposer 20 are flush with each other, and here, it is also necessary to make the surface of the side of the groove bottom of the conductive adhesive 22 facing away from the groove 21 flush with the notch of the groove 21, so that the conductive adhesive 22 is almost completely accommodated in the groove 21, and when the interposer 20 is bonded to the cover plate assembly 12 through the conductive adhesive 22, the first contact portion 213 can be attached to the cover plate assembly 12.

Similar to the first recess 211, a second contact 214 may be disposed on the first surface, the second contact 214 may be located between the insulating layer 23 and the second recess 212, and the second contact 214 may be in contact with the sealing member 122 and/or the upper cover 121. In this way, the second contact portion 214 can perform the same function when the first contact portion 213 is not in direct contact with the upper cover 121 due to accident or the like. Similar to the first contact portions 213, the second contact portions 214 may protrude from other areas on the first surface of the interposer 20, or the second contact portions 214 may be flush with each other on the first surface of the interposer 20.

In the embodiment of the present application, after the adaptor sheet 20 is bonded to the battery body 10, the battery 100 can be discharged from the process for encapsulation and boxing for shipment.

In the embodiment of the present application, an interposer 20 is further provided, where the interposer 20 is an interposer in the battery 100, and the structure, function, principle, and the like of the interposer are described in detail in the embodiment above, and are not described herein again.

In the embodiment of the application, the battery comprises a battery body and an adapter plate, wherein the battery body comprises a lower shell and a cover plate assembly arranged at the top of the lower shell through an insulating cover, the battery body further comprises a first tab and a second tab with opposite polarities, the cover plate assembly is electrically connected with the first tab, and the lower shell is electrically connected with the second tab; the adapter plate is connected to the top side of the cover plate assembly, an insulating layer is further arranged on the first surface, facing the battery body, of the adapter plate, and the setting position of the insulating layer corresponds to the junction area of the lower shell and the cover plate assembly. In the above scheme, the cover plate assembly is electrically connected with the first tab, the lower shell is electrically connected with the second tab, therefore, the boundary area of the lower shell and the cover plate assembly is the boundary area of the anode and the cathode of the battery, the setting position of the insulating layer on the switching sheet corresponds to the boundary area, even if the switching sheet contacts the boundary area, the lower shell and the cover plate assembly cannot be conducted due to the existence of the insulating layer, the anode and the cathode of the battery cannot be short-circuited, and therefore the connection safety of the switching sheet and the battery is high.

In the description of the present invention, it should be noted that unless otherwise specifically stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning a fixed connection, an indirect connection through intervening media, a connection between two elements, or an interaction between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

The terms "first," "second," "third," "fourth," and the like in the description and in the claims of the present application and in the drawings described above, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein.

Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims (10)

1. A battery is characterized by comprising a battery body and an adapter plate, wherein the battery body comprises a lower shell and a cover plate assembly arranged at the top of the lower shell in an insulating cover manner, the battery body further comprises a first tab and a second tab with opposite polarities, the cover plate assembly is electrically connected with the first tab, and the lower shell is electrically connected with the second tab; the adapter plate is connected to the top side of the cover plate assembly;

the first surface of the adapter piece facing the battery body is further provided with an insulating layer, and the arrangement position of the insulating layer corresponds to the junction area of the lower shell and the cover plate assembly.

2. The battery according to claim 1, wherein the lower case is a lid-like member, and a top end portion of a side wall of the lid-like member has a flange protruding toward an inner side of the lower case, the lid member is overlapped on the flange, and the insulating layer is provided at a position corresponding to an edge portion of the lid member.

3. The battery of claim 2, wherein the insulating layer is an insulating glue; and/or the insulating layer is arranged along the whole circumference of the adapter plate.

4. The battery of any of claims 1-3, wherein the interposer is bonded to the cover assembly by conductive glue.

5. The battery of claim 4, wherein the first surface of the interposer is provided with at least one groove for receiving the conductive adhesive.

6. The battery according to claim 5, wherein the cover assembly comprises an upper cover plate and a sealing member, the upper cover plate is provided with an opening, and the sealing member is arranged at an opening edge part of the opening to close the opening;

the at least one groove comprises a first groove and a second groove, the first groove is arranged at a position corresponding to the upper cover plate, and the second groove is arranged at a position corresponding to the sealing piece.

7. The battery of claim 6, wherein the first surface has a first contact portion thereon, the first contact portion being located between the first recess and the second recess, the first contact portion being in contact with the upper cover plate and/or the closure.

8. The battery of claim 6, wherein the first surface further comprises a second contact portion disposed between the insulating layer and the second groove, the second contact portion contacting the sealing member and/or the upper cover plate.

9. The battery according to claim 5, wherein the groove penetrates both width-direction end sides of the interposer.

10. The battery of claim 5, wherein the groove is formed by stamping.

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