CN215869502U

CN215869502U - Insulation protection structure and battery lead protection structure

Info

Publication number: CN215869502U
Application number: CN202122218088.2U
Authority: CN
Inventors: 刘友群; 张传生; 欧秋良
Original assignee: Zhuhai Cosmx Power Co Ltd
Current assignee: Zhuhai Cosmx Power Co Ltd
Priority date: 2021-09-14
Filing date: 2021-09-14
Publication date: 2022-02-18
Anticipated expiration: 2031-09-14

Abstract

The utility model provides an insulation protection structure and a battery lead protection structure, wherein the insulation protection structure comprises: the insulating plastic package shell is formed by plastic package of a plastic package film, at least two containing cavities are formed in the insulating plastic package shell, and any two adjacent containing cavities are not communicated. According to the utility model, the insulating plastic package shell is arranged, and the head part of the lead and the lead close to the head part are wrapped by the insulating plastic package shell, so that the exposed metal conductor of the lead is wrapped inside the insulating plastic package shell, a better insulating protection effect can be achieved, and the insulating plastic package shell is formed by plastic package of the plastic package film.

Description

Insulation protection structure and battery lead protection structure

Technical Field

The utility model relates to the technical field of batteries, in particular to an insulation protection structure and a battery lead protection structure.

Background

The PACK production process of the lithium ion battery mainly comprises the following steps: the method comprises the following steps of pad printing and code spraying, rubberizing, protection plate welding, performance testing, size measurement, wire insulation and the like. The lithium ion battery is welded with a lead, the plastic protective layer is stripped by the lead, the metal conductor part is exposed, and the lead is used for being connected with a battery holder of an electric appliance. Before the battery is used, the battery lead needs to be insulated in order to avoid causing short circuit of the battery, and when the lead needs to be connected with an electric appliance, the insulating layer is stripped.

In the current lead insulation process of the lithium ion battery, a battery lead is mainly insulated by an insulation sleeve, the insulation sleeve can play a good insulation role, but the wire diameter of the lead is thin, soft and easy to bend, the inner diameter of the existing sleeve is only about 0.6mm, the sleeve is thin, operators are difficult to operate in the production process, the speed of the sleeve is slow, the efficiency of the sleeve is seriously influenced, and the efficiency of PACK production is also greatly influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problem of low production efficiency in the existing wire insulation process.

To solve the above problems, a first aspect of the present invention provides an insulation protection structure, including: the insulating plastic package shell is formed by plastic package of a plastic package film, at least two containing cavities are formed in the insulating plastic package shell, and any two adjacent containing cavities are not communicated.

Further, the distance between any two adjacent accommodating cavities is at least more than 3 mm.

Further, the plastic packaging film is a composite film layer, and the composite film layer is an insulating composite film layer.

Furthermore, the insulating plastic package shell is formed by plastically packaging two composite film layers arranged on two opposite side surfaces of the lead.

Further, the composite film layer comprises a hot melt layer, an adhesive layer and a base material layer which are sequentially arranged from the inner layer to the outer layer.

Further, the hot melt layer is a PE film layer, the adhesive layer is an EVA film layer, and the substrate layer is a PET film layer.

The utility model provides a battery lead protection structure, which comprises the insulation protection structure, wherein the insulation protection structure wraps a head part of a battery lead and a naked part close to the head part.

According to the insulation protection structure, the insulation plastic package shell is arranged, the insulation plastic package shell is provided with at least two non-communicated containing cavities, the metal conductor exposed out of the lead is contained in the containing cavity and wrapped in the insulation plastic package shell, so that a good insulation protection effect can be achieved, the insulation plastic package shell is formed by plastic package of the plastic package film, and compared with a traditional insulation tube sleeving mode, the work difficulty of operators is greatly reduced, the efficiency of an insulation process of the lead is improved, and the efficiency of PACK production is also improved.

Drawings

Fig. 1 is a schematic perspective view illustrating a prior art structure of sleeving an insulating sleeve on a battery lead;

fig. 2 is a schematic perspective view of a battery lead protection structure according to an embodiment of the present invention;

FIG. 3 is a schematic perspective view of a composite film layer according to an embodiment of the present invention;

fig. 4 is a schematic front view of a composite film layer according to an embodiment of the utility model.

Description of reference numerals:

1-a wire; 2-insulating plastic packaging shell; 3-hot melt layer; 4-an adhesive layer; 5-a substrate layer; 6-an insulating sleeve; 7-a battery;

21-a containing cavity; 22-plastic sealing part.

Detailed Description

In order to solve the technical problems, the embodiment of the utility model provides an insulation protection structure and a battery lead protection structure, the head of a lead and the lead close to the head are wrapped by an insulation plastic package shell, so that a better insulation protection effect can be achieved, and the insulation plastic package shell is formed by plastic package of a plastic package film, so that the working difficulty of operators is greatly reduced, the efficiency of the insulation process of the lead is improved, and the efficiency of PACK production is also improved.

The technical solutions in the embodiments of the present application will be described in detail and clearly with reference to the accompanying drawings. In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.

In the description of the embodiments of the present application, the description of the term "some preferred embodiments" means that a particular feature, structure, material or characteristic described in connection with the embodiment or example is included in at least one preferred embodiment or preferred example of the present invention. Throughout this specification, the schematic representations of the terms used above do not necessarily refer to the same implementation or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Fig. 1 is a schematic diagram of a structure in which an insulating sleeve is sleeved on a battery lead in the prior art, and is combined with fig. 1, wherein an insulating sleeve 6 is sleeved on each lead 1 led out from a battery 7, a traditional battery lead is mainly insulated by the insulating sleeve 6, the insulating sleeve 6 is sleeved on each lead 1, so that the operation is difficult, the speed of the sleeve is slow, the production efficiency of a lead insulating process is seriously influenced, and the efficiency of PACK production is also greatly influenced.

With reference to fig. 2, a first aspect of this embodiment provides an insulation protection structure, which includes an insulation plastic package housing, where the insulation plastic package housing is formed by plastic package of a plastic package film, the insulation plastic package housing is provided with at least two accommodating cavities, and any two adjacent accommodating cavities are not communicated with each other.

The insulating protection structure that this embodiment provided, through setting up insulating plastic envelope shell, be equipped with the chamber that holds that two at least do not communicate with on this insulating plastic envelope shell, the naked metallic conductor holding of wire is in holding the intracavity, and wrapped up in the inside at insulating plastic envelope shell, thereby can play insulating protective action betterly, and insulating plastic envelope shell is formed by plastic envelope membrane plastic envelope, compare with traditional cover insulating tube's mode, greatly reduced operating personnel's the work degree of difficulty, the efficiency of the insulating process of wire has been improved, the efficiency of PACK production has also been improved.

In this embodiment, one end of the insulating plastic package housing 2 is provided with at least two openings (not labeled in fig. 2), each opening extends towards the other end, and a containing cavity 21 is formed inside the insulating plastic package housing 2, the head of the lead 1 and the lead 1 close to the head are contained in the containing cavity 21, any two adjacent containing cavities 21 are not communicated with each other, and a plastic package portion 22 is arranged around the outer side of each containing cavity 21, and the plastic package portion 22 connects the insulating plastic package housing into a whole in a plastic package manner. Therefore, the head of the lead 1 and the lead 1 close to the head can be completely wrapped, a better insulation effect is achieved, and the insulating plastic package shell 2 on the lead 1 can be conveniently taken out when the lead is connected with an electric appliance in the follow-up process.

It should be noted that, in this embodiment, the number of the openings and the accommodating cavities 21 on the insulating plastic package housing 2 is not further limited, and a person skilled in the art can determine the number of the wires 1 to be wrapped by the insulating plastic package housing 2, for example, the insulating plastic package housing 2 needs to wrap two wires 1, and the insulating plastic package housing 2 is provided with two openings and two accommodating cavities 21; the insulating plastic package shell 2 needs to wrap the three conducting wires 1, and the insulating plastic package shell 2 is provided with three openings and three containing cavities 21.

In this embodiment, the distance between any two adjacent accommodating cavities 21 is at least 3 mm. Therefore, the distance between two adjacent leads 1 can be separated, and the risk that any two adjacent leads 1 are short-circuited due to too close distance can be avoided.

In this embodiment, the insulating plastic package casing 2 is a composite film plastic package casing, and the composite film plastic package casing is formed by plastic package of two composite film layers (not shown) disposed on two opposite sides of the conductive wire, where the composite film layer is an insulating composite film layer. From this, through set up two compound retes in wire two relative sides, compound rete non-conducting, and insulating properties is better, can play better ground insulating effect with its setting on wire 1, and form complex film plastic envelope shell through the mode of plastic envelope, operating personnel's in the manufacturing process work degree of difficulty that can greatly reduced is favorable to improving production efficiency.

As shown in fig. 3-4, the composite film layer includes a hot-melt layer 3, an adhesive layer 4, and a substrate layer 5, which are sequentially disposed from an inner layer to an outer layer, wherein the hot-melt layer 3 is a PE (polyethylene) film layer, the adhesive layer 4 is an EVA (ethylene vinyl acetate copolymer) film layer, and the substrate layer 5 is a PET (polyethylene terephthalate) film layer. Therefore, the PE film layer is used as the hot melting layer 3, the EVA film layer is used as the adhesive layer 4, the bonding performance of the composite film layers can be improved, the two composite film layers are better bonded, the two composite film layers can be peeled from the lead more cleanly in the follow-up process, and the conductive performance of the lead is prevented from being influenced; PET has good mechanical properties and bending strength, and nontoxic tasteless, and environmental protection more chooses the PET rete for use as substrate layer 5, can avoid insulating plastic envelope shell damaged, and safer environmental protection.

The second aspect of the present embodiment provides a battery lead protection structure, which includes the above insulation protection structure, the lead 1 is led out from the battery 7, and the head of the lead 1 and the metal conductor near the head are exposed, the insulation plastic package casing 2 in the insulation protection structure wraps the head of the lead 1 and the lead 1 near the head, and the head of the lead 1 and the lead 1 near the head are accommodated in the accommodating cavity.

In lithium ion battery's wire insulation process, after battery 7 is fixed, the distance between two arbitrary adjacent wires 1 all separates more than 3mm, sets up two compound retes relatively in the both sides of two wires 1, and the regional formation that holds wire 1 holds chamber 21, and other regions around every outside that holds chamber 21 are plastic envelope portion 22, and the plastic envelope portion 22 of two compound retes links into an integrated entity through the mode of plastic envelope, obtains battery wire protection architecture.

The battery wire protection architecture that this embodiment provided, two side sets up two compound retes relative at the wire, and two compound retes form insulating plastic envelope shell through the mode of plastic envelope, compare with traditional cover insulation support's mode, this mode can not only play insulating guard action betterly to the naked metallic conductor of wire head, operating personnel's the work degree of difficulty has also been greatly reduced, the efficiency of the insulating process of wire has been improved, the efficiency of PACK production has also been improved, furthermore, adopt the manpower operation cost that this kind of mode also can save the insulating process of wire, be favorable to improving the benefit of PACK production.

Although the present disclosure has been described above, the scope of the present disclosure is not limited thereto. Various changes and modifications may be effected therein by one of ordinary skill in the pertinent art without departing from the spirit and scope of the present disclosure, and these changes and modifications are intended to be within the scope of the present disclosure.

Claims

1. An insulation protection structure, comprising: the insulating plastic package shell is formed by plastic package of a plastic package film, at least two containing cavities are formed in the insulating plastic package shell, and any two adjacent containing cavities are not communicated.

2. The insulation protection structure of claim 1, wherein the distance between any two adjacent receiving cavities is at least 3mm or more.

3. The insulation protection structure of claim 1, wherein said plastic film is a composite film layer, and said composite film layer is an insulating composite film layer.

4. The insulation protection structure of claim 3, wherein the insulation plastic package housing is formed by plastic-packaging two composite film layers arranged on two opposite side surfaces of the conducting wire.

5. The insulation protection structure of claim 3, wherein said composite film layer comprises a hot melt layer, an adhesive layer and a substrate layer sequentially arranged from an inner layer to an outer layer.

6. The insulation protection structure of claim 5, wherein said hot melt layer is a PE film layer, said adhesive layer is an EVA film layer, and said substrate layer is a PET film layer.

7. A battery lead protection structure comprising the insulation protection structure of any one of claims 1 to 6, the insulation protection structure covering a head portion of a battery lead and an exposed portion near the head portion.