CN216850241U - Cylindrical battery cell convenient for distinguishing positive and negative electrode structures - Google Patents
Cylindrical battery cell convenient for distinguishing positive and negative electrode structures Download PDFInfo
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- CN216850241U CN216850241U CN202220482089.XU CN202220482089U CN216850241U CN 216850241 U CN216850241 U CN 216850241U CN 202220482089 U CN202220482089 U CN 202220482089U CN 216850241 U CN216850241 U CN 216850241U
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Abstract
The utility model provides a cylindrical electric core convenient for distinguishing positive and negative electrode structures, a cylindrical electric core formed by winding a positive plate, a negative plate and a diaphragm positioned between the positive plate and the negative plate, a positive tab is arranged on the positive plate, a negative tab is arranged on the negative plate, and the positive tab and the negative tab are respectively positioned at two ends of the cylindrical electric core, a positive tab adhesive is pasted on the positive tab, a negative tab adhesive is pasted on the negative tab, the positive tab adhesive and the negative tab adhesive are single varieties and the same type of tab adhesive, the width of the positive tab/the negative tab is larger than that of the negative tab/the positive tab; the size of the positive electrode lug is larger than that of the negative electrode lug, so that the positive electrode and the negative electrode of the cylindrical battery cell are easily distinguished, the electrode lug glue of the positive electrode lug and the negative electrode lug only needs to adopt one type of electrode lug glue for fitting, the types of the electrode lug glue adopted by the positive electrode and the negative electrode are consistent, and the consistency of processing parameters of the positive electrode and the negative electrode is ensured.
Description
Technical Field
The utility model relates to a battery technology field especially relates to a cylinder electricity core convenient to distinguish positive negative pole structure.
Background
The battery is divided into a positive electrode and a negative electrode, the tabs are metal conductors leading out the positive electrode and the negative electrode from the battery core, and the tabs are ears of the positive electrode and the negative electrode of the battery in popular terms, are contact points during charging and discharging, and are a connection in the battery.
Generally, the tab is formed by combining a film (i.e., tab film) and a metal tape, wherein the film is an insulating part on the tab and is used for preventing a short circuit between the metal tape and an aluminum plastic film serving as a package body when the battery is packaged, and the film is hot-melted, sealed and bonded with the aluminum plastic film in a heating manner to prevent liquid leakage when the battery is packaged. Generally, a tab is formed by sandwiching a metal band between two tab adhesives, and the tab adhesives currently used in the market include three types, namely black adhesive, white adhesive and single-layer adhesive.
In the production operation process, a positive electrode tab (also called as a positive electrode tab) of the battery is connected with a positive electrode of a battery cell, and a negative electrode tab (also called as a negative electrode tab) of the battery is connected with a negative electrode of the battery cell. The shape and thickness of the metal belt, even the characteristics of the tab glue, are consistent except that the metal belt is made of different materials and has different colors, so that the positive tab and the negative tab are often distinguished by manually identifying the metallic luster of the metal belt.
Based on this, in the prior art, some operators use different tab glues on the metal strips of the positive tab and the negative tab, for example, one of the tab glues uses black glue, the other tab glue uses white glue, or two different tab glues are used on the positive electrode at the same time, as shown in fig. 1, black glue 1021 and white glue 1022 are pasted on the positive tab 101 at the same time to distinguish the positive tab from the negative tab. However, different tab adhesives exist on the positive tab and the negative tab of the same battery, and due to different properties of the tab adhesives, the melting points required by the positive and negative electrodes during packaging are different, so that the consistency of the processing parameters of the positive and negative electrodes in the processing process is influenced.
Therefore, it is necessary to design a cylindrical battery cell for distinguishing the positive electrode structure from the negative electrode structure so as to solve the above problems.
SUMMERY OF THE UTILITY MODEL
The utility model provides a cylinder electricity core convenient to distinguish positive negative pole structure for the positive negative pole of solving cylinder electricity core among the prior art is difficult to the problem of distinguishing.
In order to solve the above problem, the utility model provides a following technical scheme: the cylindrical battery cell is formed by winding a positive plate, a negative plate and a diaphragm positioned between the positive plate and the negative plate, wherein a positive tab is arranged on the positive plate, a negative tab is arranged on the negative plate, the positive tab and the negative tab are respectively positioned at two ends of the cylindrical battery cell, positive tab glue is pasted on the positive tab, negative tab glue is pasted on the negative tab, the positive tab glue and the negative tab glue are of a single variety and are of the same type, and the width of the positive tab/the negative tab is greater than that of the negative tab/the positive tab;
the utility model discloses a plastic-aluminum membrane bag, including cylinder electricity core, aluminium-plastic membrane bag, positive pole ear glue hot melt banding and form the side banding, the cylinder electricity core is annotated and is had electrolyte and cylinder single electricity core suit in the cylinder electricity core, the lateral part of aluminium-plastic membrane bag is equipped with the side banding, the one end of aluminium-plastic membrane bag and anodal utmost point ear glue hot melt banding and form the top banding, the other end of aluminium-plastic membrane bag and the gluey hot melt banding of negative pole ear form the bottom banding.
Furthermore, the positive lug is a metal sheet formed by splicing aluminum and nickel.
Further, the splicing position of the aluminum and the nickel is positioned inside the top sealing edge.
Further, the difference between the width of the positive electrode tab and the width of the negative electrode tab is larger than 0.5 mm.
Further, the negative electrode tab is a metal sheet made of nickel material.
Compared with the prior art, the utility model discloses following beneficial effect has at least:
the utility model discloses in, because the size of anodal ear is greater than the size of negative pole ear, so distinguish the positive negative pole of cylinder electricity core easily to the utmost point ear of anodal negative pole ear glues and all only needs to adopt a type utmost point ear to glue and laminates, and the utmost point ear that positive negative pole adopted glues the type unanimity, has guaranteed positive negative pole processing parameter's uniformity, and has reduced manufacturing cost.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, 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 creative efforts.
FIG. 1 is a schematic view of a positive tab in the prior art;
fig. 2 is a schematic diagram of a cylindrical cell in the prior art;
fig. 3 is a schematic view of a positive tab in an embodiment of the present invention;
fig. 4 is a schematic diagram of a cylindrical battery cell in an embodiment of the present invention.
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 only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention. It is to be understood that the drawings are designed solely for the purposes of illustration and description and not as a definition of the limits of the invention. The connection relationships shown in the drawings are for clarity of description only and do not limit the manner of connection.
It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It should also be noted that, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly and can include, for example, fixed connections, removable connections, or integral connections; either mechanically or electrically, and may be internal to both elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
It should be further noted that in the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, but does 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. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Referring to fig. 1, a cylindrical electrical core with a positive electrode structure and a negative electrode structure is conveniently distinguished, the cylindrical electrical core 301 is formed by winding a positive electrode sheet, a negative electrode sheet and a diaphragm located between the positive electrode sheet and the negative electrode sheet, a positive electrode tab 101 is arranged on the positive electrode sheet, a negative electrode tab 201 is arranged on the negative electrode sheet, the positive electrode tab 101 and the negative electrode tab 201 are respectively located at two ends of the cylindrical electrical core 301, a positive electrode tab glue 102 is pasted on the positive electrode tab 101, a negative electrode tab glue is pasted on the negative electrode tab 201, the positive electrode tab glue 102 and the negative electrode tab glue are of a single variety and are of the same type, that is, the positive electrode tab glue and the negative electrode tab glue are both black glue or white glue or single-layer glue, and the width of the positive electrode tab/negative electrode tab is greater than that of the negative electrode tab/positive electrode tab; in this embodiment, the difference between the width of the positive tab and the width of the negative tab is greater than 0.5mm, so that the positive and negative tabs can be visually distinguished.
In this embodiment, it has electrolyte and cylinder single core suit to fill in cylinder electricity core 301 in the plastic-aluminum membrane bag, the lateral part of plastic-aluminum membrane bag is equipped with side banding 302, the one end of plastic-aluminum membrane bag forms top banding 303 with anodal utmost point ear glue 102 hot melt banding, the other end and the negative pole utmost point ear glue hot melt banding of plastic-aluminum membrane bag form bottom banding 304.
In this embodiment, the positive tab 101 is a metal sheet formed by splicing aluminum 1011 and nickel 1012. And the concatenation position of aluminium 1011 and nickel 1012 is inside the top banding, because the concatenation position of aluminium and nickel is broken more easily, consequently, sets up it inside the top banding, has avoided the risk of disconnected utmost point ear.
In this embodiment, the negative electrode tab 201 is a metal sheet made of nickel.
Throughout the description and claims of this application, the words "comprise/comprises" and the words "have/includes" and variations of these are used to specify the presence of stated features, values, steps or components but do not preclude the presence or addition of one or more other features, values, steps, components or groups thereof.
Some features of the invention, which are, for clarity, described in the context of separate embodiments, may also be provided in combination in a single embodiment. Conversely, certain features of the invention, which are, for brevity, described in the context of a single embodiment, may also be provided separately or in any suitable combination in different embodiments.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention should be included in the present invention.
Claims (5)
1. A cylindrical battery cell convenient for distinguishing a positive electrode structure and a negative electrode structure is characterized by comprising a cylindrical battery cell formed by winding a positive plate, a negative plate and a diaphragm positioned between the positive plate and the negative plate, wherein a positive tab is arranged on the positive plate, a negative tab is arranged on the negative plate, the positive tab and the negative tab are respectively positioned at two ends of the cylindrical battery cell, a positive tab adhesive is pasted on the positive tab, a negative tab adhesive is pasted on the negative tab, the positive tab adhesive and the negative tab adhesive are single varieties and the same type of tab adhesive, and the width of the positive tab/the negative tab is larger than that of the negative tab/the positive tab;
the utility model discloses a plastic-aluminum membrane bag, including cylinder electricity core, aluminium-plastic membrane bag, positive pole ear glue hot melt banding and form the side banding, the cylinder electricity core is annotated and is had electrolyte and cylinder single electricity core suit in the cylinder electricity core, the lateral part of aluminium-plastic membrane bag is equipped with the side banding, the one end of aluminium-plastic membrane bag and anodal utmost point ear glue hot melt banding and form the top banding, the other end of aluminium-plastic membrane bag and the gluey hot melt banding of negative pole ear form the bottom banding.
2. The cylindrical battery cell convenient for distinguishing the positive electrode structure from the negative electrode structure as claimed in claim 1, wherein the positive electrode tab is a metal sheet formed by splicing aluminum and nickel.
3. The cylindrical battery cell convenient for distinguishing between a positive electrode structure and a negative electrode structure according to claim 2, wherein the spliced aluminum and nickel are positioned inside the top edge seal.
4. The cylindrical battery cell convenient for distinguishing between a positive electrode and a negative electrode in claim 1, wherein the difference between the width of the positive electrode tab and the width of the negative electrode tab is greater than 0.5 mm.
5. The cylindrical battery cell convenient for distinguishing between a positive electrode and a negative electrode in claim 1, wherein the negative electrode tab is a metal sheet made of nickel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220482089.XU CN216850241U (en) | 2022-03-07 | 2022-03-07 | Cylindrical battery cell convenient for distinguishing positive and negative electrode structures |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220482089.XU CN216850241U (en) | 2022-03-07 | 2022-03-07 | Cylindrical battery cell convenient for distinguishing positive and negative electrode structures |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216850241U true CN216850241U (en) | 2022-06-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220482089.XU Active CN216850241U (en) | 2022-03-07 | 2022-03-07 | Cylindrical battery cell convenient for distinguishing positive and negative electrode structures |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216850241U (en) |
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2022
- 2022-03-07 CN CN202220482089.XU patent/CN216850241U/en active Active
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