CN219303823U - Battery and electronic equipment - Google Patents

Abstract

The present disclosure relates to a battery and an electronic device. The battery includes: bare cell. And the protection plate is fixedly connected with the bare cell to form an integrated structure. And the seal shell is coated outside the integrated structure and encapsulates the bare cell and the protection plate. The bare cell and the protection plate are connected to form an integrated structure, and the sealing shell wraps the bare cell and the protection plate and is packaged in the outside of the integrated structure, so that the full-sealing design integrating the bare cell, the protection plate and the sealing shell is realized. The battery design of the fully sealed packaging mode fully utilizes the inert space of the battery and improves the energy density of the battery. Meanwhile, the encapsulation mode enables the bare cell, the protection plate and the sealing shell of the battery to form an integrated structure, reduces the use of auxiliary materials, and further improves the attractiveness of the battery.

Description

Battery and electronic equipment

Technical Field

The disclosure relates to the field of electronic technology, and in particular, to a battery and an electronic device.

Background

The lithium ion battery has the advantages of higher energy density, excellent cycle life and the like, and in recent years, the lithium ion battery is more widely applied to intelligent wearing, mobile phones, PCs, electric vehicles and the like. At present, the lithium ion battery occupies a large amount of space in packaging protection, so that space is wasted, and user experience is affected. Therefore, how to effectively utilize the space capacity of the lithium ion battery is an important issue facing us.

Disclosure of Invention

The disclosure provides a battery and an electronic device, which can improve the energy density of the battery.

In a first aspect, embodiments of the present disclosure provide a battery, comprising:

a bare cell;

the protection plate is fixedly connected with the bare cell to form an integrated structure;

and the seal shell is coated outside the integrated structure and encapsulates the bare cell and the protection plate.

Optionally, the battery pack further comprises a separation plate, wherein the separation plate is positioned between the bare cell and the protection plate and is in sealing connection with the sealing shell.

Optionally, the isolation board comprises a conductive board body, and the bare cell is electrically connected with the protection board through the conductive board body.

Optionally, a side of the isolation board, which is close to the bare cell, includes a first conductive area and a first insulating area, the first insulating area is coated with a first insulating layer, and the bare cell is welded and fixed with the first conductive area.

Optionally, the first insulating layer includes an insulating adhesive layer; and/or

The first insulating layer comprises one or more of a polypropylene insulating layer, a polyethylene insulating layer and a polyvinylidene fluoride insulating layer.

Optionally, a side of the isolation plate, which is close to the protection plate, comprises a second conductive area and a second insulating area, the second insulating area is coated with a second insulating layer, and the protection plate is welded and fixed with the second conductive area.

Optionally, the second insulating layer includes an insulating adhesive layer; and/or

The second insulating layer comprises one or more of a polypropylene insulating layer, a polyethylene insulating layer and a polyvinylidene fluoride insulating layer.

Optionally, the separator comprises a stainless steel plate.

Optionally, the bare cell includes a positive electrode tab and a negative electrode tab, the positive electrode tab is welded and fixed with the protection plate, and the negative electrode tab is welded and fixed with the sealed shell.

Optionally, the bare cell and the protection plate are welded and fixed with the sealed shell.

Optionally, the sealing shell comprises one of an aluminum plastic film shell, a stainless steel shell, an aluminum shell and an iron shell; and/or

The protection plate includes a metal plate.

In a second aspect, an embodiment of the disclosure proposes an electronic device, including a battery according to the first aspect.

The technical scheme provided by the embodiment of the disclosure can comprise the following beneficial effects:

the battery of this disclosure, naked electric core and protection shield are connected and are formed integrated structure, and sealed casing cladding is in the encapsulation of naked electric core and protection shield outside integrated structure to realize the totally enclosed design with naked electric core, protection shield and sealed casing integration. The battery design of the fully sealed packaging mode fully utilizes the inert space of the battery and improves the energy density of the battery. Meanwhile, the encapsulation mode enables the bare cell, the protection plate and the sealing shell of the battery to form an integrated structure, reduces the use of auxiliary materials, and further improves the attractiveness of the battery.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description, serve to explain the principles of the disclosure.

Fig. 1 is a schematic structural view of a battery according to an exemplary embodiment of the present disclosure.

Fig. 2 is a side cross-sectional view of a battery according to an exemplary embodiment of the present disclosure.

Fig. 3 is a schematic structural view of a bare cell of a battery according to an exemplary embodiment of the present disclosure.

Fig. 4 is a side view of a separator of a battery according to an exemplary embodiment of the present disclosure.

Detailed Description

Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with some aspects of the present disclosure as detailed in the accompanying claims.

The disclosure provides a battery and an electronic device, which can improve the energy density of the battery. The battery and the electronic device of the present disclosure will be described in detail with reference to the accompanying drawings. The features of the following examples and embodiments may be combined with each other without conflict.

Referring to fig. 1 and 2, an embodiment of the disclosure provides a battery and an electronic device, where the battery can be used as a main power source and applied to electronic devices such as a mobile phone, a tablet computer, an intelligent wearable device, a notebook computer, and the like, and also can be applied to electric products such as an electric vehicle and an electric automobile. The battery 100 may include a bare cell 10, a protection plate 20, and a sealed case 30. The protection plate 20 is fixedly connected with the bare cell 10 to form an integrated structure. The sealing case 30 is coated outside the integrated structure, and encapsulates the bare cell 10 and the protection plate 20. Alternatively, the battery 100 may be a lithium battery, or may be other types of batteries 100, which the present disclosure is not limited to.

So set up, the battery 100 of this disclosure, naked electric core 10 and protection shield 20 are connected and are formed integrated structure, and sealed casing 30 cladding is at integrated structure outside with naked electric core 10 and protection shield 20 encapsulation to realize the totally enclosed design with naked electric core 10, protection shield 20 and sealed casing 30 integration. The battery design of the fully-sealed packaging mode fully utilizes the inertia space of the battery, reduces the space occupied by the packaging structure, thereby improving the energy density, the power density and the cycle life of the battery, meeting the increasing long endurance requirements of users and improving the user experience. Meanwhile, the packaging mode enables the bare cell 10, the protection plate 20 and the sealing shell 30 of the battery to form an integrated structure, parts such as a protection shell and protective gummed paper which are needed to be adopted in the packaging space of the traditional battery head are omitted, the use of auxiliary materials is reduced, the space occupied by the packaging structure is reduced, and the attractiveness of the battery is further improved.

Referring to fig. 3, in some alternative embodiments, the bare cell 10 may be composed of a positive electrode tab 11, an electrolyte 12, a separator 13, and a negative electrode tab 14 by winding or lamination. Taking a lithium battery as an example, the negative electrode plate 14 generates potential difference with the positive electrode plate 11 to form current in the charging process of the lithium battery, and meanwhile, the negative electrode plate 14 is a carrier of lithium ions and electrons, so that the purposes of energy storage and energy release are achieved. And after the lithium battery is injected with the liquid, the lithium battery is charged for the first time, and active substances in the battery are activated in the process, so that the lithium battery is activated.

In some alternative embodiments, the sealing case 30 may include one of an aluminum plastic film case, a stainless steel case, an aluminum case, and an iron case, and the sealing case 30 may serve as a packaging film of the battery to isolate external air, moisture, and the like from entering the battery. The protection plate 20 may be a protection circuit board (PCM, protection circuit module) on which a protection circuit is provided to protect the battery.

In some alternative embodiments, as shown in fig. 2, the battery 100 may further include a separator 40, where the separator 40 is located between the bare cell 10 and the protection plate 20 and is hermetically connected with the sealing case 30, so that the electrolyte is effectively prevented from penetrating into the side of the protection plate 20. The isolation plate 40 may be connected to the protection plate 20, and the bare cell 10 is connected to the isolation plate 40, thereby connecting the bare cell 10 to the protection plate 20 through the isolation plate 40. The separator 40 may serve both to connect the bare cell 10 with the protection plate 20 and to insulate and prevent electrolyte inside the battery from penetrating into the protection plate 20.

Referring to fig. 4, in some alternative embodiments, a side of the isolation plate 40 near the bare cell 10 includes a first conductive region 41 and a first insulating region 42, the first insulating region 42 is coated with a first insulating layer, and the bare cell 10 is welded and fixed with the first conductive region 41. In this way, the first conductive region 41 can be connected to the bare cell 10, and functions as a connection with the protection plate 20. The first insulating layer coated on the first insulating region 42 may serve as an insulation function and further prevent the electrolyte inside the battery from penetrating into the protection plate 20.

Alternatively, the isolation plate 40 may include a conductive plate body through which the bare cell 10 may be electrically connected with the protection plate 20. Alternatively, the conductive plate body may be a stainless steel plate, and the first insulating layer may include an insulating paste layer, and the insulating paste may be compounded on the stainless steel plate in a region corresponding to the first insulating region 42 through a spray process, thereby forming the first insulating layer. The first insulating layer may include one or more of a polypropylene (PP) insulating layer, a Polyethylene (PE) insulating layer, and a polyvinylidene fluoride (PVDF, polyvinylidene difluoride) insulating layer. Of course, other materials may be used for the isolation plate 40, and other materials may be used for the first insulating layer, which is not limited in this disclosure.

In some alternative embodiments, similar to the side of the isolation plate 40 near the bare cell 10, the side of the isolation plate 40 near the protection plate 20 includes a second conductive region and a second insulating region, the second insulating region is coated with a second insulating layer, and the protection plate 20 is welded to the second conductive region. In this way, the second conductive region may be connected to the protection plate 20, and function to connect to the bare cell 10. The second insulating layer coated on the second insulating region may serve as an insulation function and further prevent the electrolyte inside the battery from penetrating into the protection plate 20.

Alternatively, the isolation plate 40 may include a conductive plate body through which the bare cell 10 may be electrically connected with the protection plate 20. Alternatively, the conductive plate body may be a stainless steel plate, and the second insulating layer may include an insulating adhesive layer, and the insulating adhesive may be compounded on the stainless steel plate in a region corresponding to the second insulating region through a spraying process, thereby forming the second insulating layer. The second insulating layer may include one or more of a polypropylene insulating layer, a polyethylene insulating layer, and a polyvinylidene fluoride insulating layer. Of course, other materials may be used for the isolation plate 40, and other materials may be used for the second insulating layer, which is not limited in this disclosure.

In some alternative embodiments, the bare cell 10 includes a positive tab 15 and a negative tab (not shown), which may be understood as metallic conductors that lead positive and negative poles out of the cell. The positive electrode tab 15 is welded to the protection plate 20, and the negative electrode tab is welded to the sealed case 30, thereby forming an electrical circuit of the battery. Alternatively, the positive electrode tab 15 is welded to the first conductive region 41 of the separator 40, thereby forming an electrical circuit of the battery by connecting the separator 40 to the protection plate 20. Except for the part welded and fixed with the first conductive area 41 of the separator 40, the outer part of the other parts of the positive electrode tab 15 can be coated with an insulating layer to play an insulating role. In this embodiment, the first conductive area 41 of the isolation board 40 is located at a middle position of one side of the isolation board 40 close to the bare cell 10, and is approximately in a structure adapted to the positive electrode tab 15, and other areas of one side of the isolation board 40 close to the bare cell 10 are all first insulating areas 42, and are coated with a first insulating layer.

In some alternative embodiments, the bare cell 10 and the protection plate 20 are welded and fixed with the sealed housing 30. In this embodiment, battery 100 is generally in a cubic structure, and sealed housing 30 may include a plurality of package plates. During assembly, the bare cell 10 and the first conductive area 41 of the isolation plate 40 may be welded and fixed, and then the protection plate 20 and the second conductive area of the isolation plate 40 may be welded and fixed, so that the protection plate 20 and the bare cell 10 are connected to form an integrated structure. A first insulating layer is then applied to the first insulating region 42 of the separator 40 and a second insulating layer is applied to the second insulating region. Finally, a plurality of packaging sheets are sequentially welded and enclosed and fixed on the outer parts of the bare cell 10 and the protective plate 20, so that the formed sealed shell 30 is covered on the outer part of an integrated structure formed by the bare cell 10 and the protective plate 20, and the bare cell 10 and the protective plate 20 are packaged.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosed technology. This disclosure is intended to cover any adaptations, uses, or adaptations of the disclosure following the general principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It is to be understood that the present disclosure is not limited to the precise arrangements and instrumentalities shown in the drawings, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims (12)

1. A battery, comprising:

a bare cell;

the protection plate is fixedly connected with the bare cell to form an integrated structure;

and the seal shell is coated outside the integrated structure and encapsulates the bare cell and the protection plate.

2. The battery of claim 1, further comprising a separator positioned between the bare cell and the protective plate and in sealing connection with the sealed housing.

3. The battery of claim 2, wherein the separator includes a conductive plate body through which the bare cell is electrically connected with the protection plate.

4. The battery of claim 3, wherein a side of the separator adjacent to the bare cell includes a first conductive region and a first insulating region, the first insulating region is coated with a first insulating layer, and the bare cell is welded to the first conductive region.

5. The battery of claim 4, wherein the first insulating layer comprises an insulating gel layer; and/or

The first insulating layer comprises any one of a polypropylene insulating layer, a polyethylene insulating layer and a polyvinylidene fluoride insulating layer.

6. The battery according to claim 2, wherein a side of the separator adjacent to the protective plate includes a second conductive region and a second insulating region, the second insulating region is coated with a second insulating layer, and the protective plate is welded to the second conductive region.

7. The battery of claim 6, wherein the second insulating layer comprises an insulating gel layer; and/or

The second insulating layer comprises any one of a polypropylene insulating layer, a polyethylene insulating layer and a polyvinylidene fluoride insulating layer.

8. The battery of claim 2, wherein the separator comprises a stainless steel plate.

9. The battery of claim 1, wherein the bare cell comprises a positive tab and a negative weld fixture.

10. The battery of claim 1, wherein the bare cell and the protective plate are both welded to the sealed housing.

11. The battery of claim 1, wherein the sealed housing comprises one of an aluminum plastic film housing, a stainless steel housing, an aluminum case, an iron case; and/or

The protection plate includes a metal plate.

12. An electronic device comprising a battery as claimed in any one of claims 1 to 11.

Images