WO2021169508A1

WO2021169508A1 - Battery apparatus and electronic device

Info

Publication number: WO2021169508A1
Application number: PCT/CN2020/136804
Authority: WO
Inventors: 陈志勇; 童焰
Original assignee: 广东微电新能源有限公司
Priority date: 2020-02-25
Filing date: 2020-12-16
Publication date: 2021-09-02
Also published as: CN211605214U

Abstract

A battery apparatus and an electronic device. The battery apparatus comprises a first half housing (11) and a second half housing (12). The first half housing (11) comprises a first cylindrical side wall and a top cover provided at one end of the first cylindrical side wall; the second half housing (12) comprises a second cylindrical side wall and a bottom cover provided at one end of the second cylindrical side wall; the first half housing (11) and the second half housing (12) are connected together in an inserted manner in which opening ends of the first half housing and the second half housing are opposite, and the second cylindrical side wall at least partially wraps the outer side of the first cylindrical side wall. An insulating rubber ring (2) is provided between the first cylindrical side wall and the second cylindrical side wall, and an annular protrusion (21) is provided on the surface, facing the second cylindrical side wall, of the insulating rubber ring (2). The present invention can effectively improve the sealing performance of the battery apparatus.

Description

Battery device and electronic equipment

Technical field

The utility model relates to the technical field of energy storage devices, and more specifically, the utility model relates to a battery device and electronic equipment.

Background technique

A battery is usually required in an electronic device, and the battery is powered to realize the normal use of the electronic device. For the needs of waterproof and dustproof, the existing battery is usually sealed as a whole.

Nowadays, the trend of miniaturization of electronic equipment is getting more and more attention. Button batteries are small in size and thin in thickness, so they are very suitable for use in miniaturized electronic devices. However, due to the small size of the button battery, it is relatively difficult to manufacture.

In the existing technical solution, the button battery usually includes two half shells and a sealing element. When the button battery is assembled, the two half-shells are snapped together with the open ends facing each other. One of the half-shells is sleeved on the outside of the other half-shell, and the seal is located between the two half-shells. . In the process of assembling the button battery, it is necessary to apply glue between the inner wall of the outer half-shell and the outer surface of the sealing member to achieve sealing. However, under normal circumstances, the semi-shell of the button battery is made of a hard metal material such as stainless steel, and its surface is relatively smooth and flat, and the outer surface of the sealing member is also relatively flat, both of which are not easy to hang glue. And even if the glue is hung, the glue is easily rubbed off during the subsequent assembly process. Eventually, the overall sealing of the battery will be poor, which will affect the later use of the battery.

Therefore, it is necessary to provide a new technical solution to solve the above technical problems.

Utility model content

One purpose of the present invention is to provide a new technical solution for a battery device and electronic equipment.

According to one aspect of the present invention, there is provided a battery device, the battery device comprising:

A first half-shell, the first half-shell includes a first cylindrical side wall and a top cover provided at one end of the first cylindrical side wall; and

A second half-shell, the second half-shell comprising a second cylindrical side wall and a bottom cover provided at one end of the second cylindrical side wall;

The first half-shell and the second half-shell are plugged together with open ends facing each other, and the second cylindrical side wall is at least partially wrapped around the outer side of the first cylindrical side wall;

Wherein, an insulating rubber ring is provided between the first cylindrical side wall and the second cylindrical side wall, and an annular protrusion is provided on the surface of the insulating rubber ring facing the second cylindrical side wall .

Optionally, the first half-shell and the second half-shell surround an accommodating cavity, and a battery cell is accommodated in the accommodating cavity.

Optionally, the number of annular protrusions is one.

Optionally, there are a plurality of said annular protrusions.

Optionally, a plurality of the annular protrusions are arranged at intervals on the surface of the insulating rubber ring, and a groove is formed between any two adjacent annular protrusions.

Optionally, the plurality of annular protrusions are arranged at equal intervals and parallel to each other.

Optionally, the lower end surface of the annular protrusion forms a chamfered structure.

Optionally, the upper end surface of the annular protrusion and the surface of the insulating rubber ring form an acute angle structure.

Optionally, the edge of the annular protrusion is wavy.

Optionally, the lower part of the insulating rubber ring has an L-shaped structure.

Optionally, a closing structure bent toward the first cylindrical side wall is formed at a position of the second cylindrical side wall close to the opening end.

According to another aspect of the present invention, an electronic device is provided, and the electronic device includes the battery device as described above.

The inventor of the present utility model found that in the prior art, when sealing the battery device, there is difficulty in hanging glue between the half shell of the battery device and the sealing member, and the hanging glue is easy to fall off and be scratched off. These conditions will cause poor sealing performance of the battery device and affect the use of the battery device.

According to the battery device provided by the embodiment of the present invention, an insulating rubber ring with a concave-convex structure on the surface is used for sealing. In the process of assembling the battery device, the special structure of the insulating rubber ring helps to achieve glue hanging and By accommodating more glue, the sealing performance of the battery device can be effectively improved, and the defects in the prior art can be overcome. The technical task to be achieved or the technical problem to be solved by the present utility model is never thought of or anticipated by those skilled in the art, so the present utility model is a new technical solution.

Through the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings, other features and advantages of the present invention will become clear.

Description of the drawings

The drawings constituting a part of the specification describe the embodiments of the present utility model, and together with the specification are used to explain the principle of the present utility model.

Fig. 1 is a schematic diagram of the external structure of a battery device according to an embodiment of the present invention.

Fig. 2 is a top view of a battery device provided according to an embodiment of the present invention.

Fig. 3 is a cross-sectional view taken along the direction C-C in Fig. 2.

Fig. 4 is a schematic diagram of the external structure of an insulating rubber ring provided according to an embodiment of the present invention.

Fig. 5 is a top view of an insulating rubber ring provided according to an embodiment of the present invention.

Fig. 6 is a cross-sectional view along the B-B direction in Fig. 5.

Description of reference signs:

1-shell; 11-first half-shell; 12-second half-shell; 120-retracting structure; 2-insulating rubber ring; 21-annular protrusion; 22-L-shaped structure.

Detailed ways

Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that unless specifically stated otherwise, the relative arrangement, numerical expressions and numerical values of the components and steps set forth in these embodiments do not limit the scope of the present invention.

The following description of at least one exemplary embodiment is actually only illustrative, and in no way serves as any restriction on the utility model and its application or use.

The technology and equipment known to those of ordinary skill in the relevant fields may not be discussed in detail, but where appropriate, the technology and equipment should be regarded as part of the specification.

In all examples shown and discussed herein, any specific value should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiment may have different values.

It should be noted that similar reference numerals and letters indicate similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

According to an embodiment of the present invention, a battery device is provided. As shown in FIGS. 1 to 3, the battery device may be a button battery, for example. The battery device may be a primary battery or a secondary battery. The battery device provided by the embodiment of the present utility model can be applied to a variety of different types of electronic equipment, and can be used to supply power to the electronic equipment, so as to realize the normal use of the electronic equipment.

An embodiment of the present utility model provides a battery device, as shown in Figures 1 to 3, which includes a housing 1, and the housing 1 includes a first half-shell 11 and a second half-shell 12 that are plugged together. . Wherein, the materials of the first half-shell 11 and the second half-shell 12 are both metallic materials. For example, the materials of the first half-shell 11 and the second half-shell 12 are both aluminum alloy materials, copper alloy materials, stainless steel materials, and the like. Moreover, the first half-shell 11 and the second half-shell 12 can be used as two electrodes of the battery device, for example, the first half-shell 11 is used as the anode of the entire battery device, and the second half-shell 11 The half-shell 12 serves as the cathode of the entire battery device.

As shown in FIG. 3, the first half-shell 11 includes a first cylindrical side wall and a top cover provided at one end of the first cylindrical side wall, and an end of the first cylindrical side wall opposite to the top cover It is the open end. The second half-shell 12 includes a second cylindrical side wall and a bottom cover provided at one end of the second cylindrical side wall, and an end of the second cylindrical side wall opposite to the bottom cover is an open end.

In the battery device provided by the embodiment of the present invention, as shown in FIG. 3, the first half-shell 11 and the second half-shell 12 are plugged together with open ends facing each other, and the second cylindrical shape The side wall is at least partially wrapped around the outer side of the first cylindrical side wall. In addition, an insulating rubber ring 2 is further provided between the first cylindrical side wall and the second cylindrical side wall. The structure of the insulating rubber ring 2 is different from that of a traditional insulating seal. An annular protrusion 21 is provided on the surface of the insulating rubber ring 2 facing the second cylindrical side wall, that is, on the insulating rubber ring 2 An annular protrusion 21 is provided on the outer surface of the insulating rubber ring 2 so that a concave-convex structure can be formed on the surface of the insulating rubber ring 2.

In the battery device provided by the embodiment of the utility model, the inner diameter of the first cylindrical side wall is slightly smaller than the outer diameter of the second cylindrical side wall, so as to form a space for accommodating the insulating rubber ring 2 between the two. By arranging the insulating rubber ring 2 between the first cylindrical side wall and the second cylindrical side wall, a good insulation and sealing effect can be achieved, which helps to make the first half-shell 11 and the second half-shell 12 A good sealing structure is formed between.

As shown in Figs. 3-6, there are annular protrusions 21 on the outer surface of the insulating rubber ring 2. In the present utility model, the surface of the insulating rubber ring 2 is not flat, but a special uneven structure is formed on the surface because of the annular protrusion 21, for example, the upper and lower sides of the annular protrusion 21 are formed The depression. In this way, in the process of assembling and sealing the battery device, the annular protrusion 21 on the surface of the insulating rubber ring 2 helps to achieve the effect of easy glue application and more glue solution, thereby effectively improving the sealing performance of the battery device. Specifically: when sealing the battery device, it is necessary to coat glue between the inner surface of the second cylindrical side wall of the second half shell 12 and the outer surface of the insulating rubber ring 2, wherein the second half The housing 12, the insulating rubber ring 2 and the first half-shell 11 are assembled longitudinally. During the assembly process, the annular protrusion 21 on the surface of the insulating rubber ring 2 allows the glue to be retained. The glue on the second cylindrical side wall is scraped by the annular protrusion 21 to the inside of the gap formed between the annular protrusion 21 and the second cylindrical side wall, which can be used to form a sealing line, which can improve the sealing effect. .

In the case of abuse of the battery device, the electrolyte in it will be discharged. With the above-mentioned sealing structure, the battery device will preferentially squeeze out the glue, and the electrolyte can be contained in the gap formed between the annular protrusion 21 and the second cylindrical side wall, so that the electrolyte is not easy to flow out. Avoid harm to the human body due to the outflow of electrolyte, and increase the safety performance of the battery device.

In the battery device provided by the embodiment of the present invention, after the first half-shell 11 and the second half-shell 12 are plugged together with the open ends facing each other, at this time, the first half-shell 11 and the second half-shell 11 can be connected to each other. The half-shells 12 collectively enclose a containing cavity, and the battery cells in the battery device are housed and arranged inside the containing cavity. The first half shell 11 and the second half shell 12 can seal the electric core to protect the electric core, and can play a good waterproof and dustproof function. It should be noted that the battery cell may be, but not limited to, a lithium ion battery cell, a lithium metal battery cell, or the like. Of course, it can also be other types of batteries known to those skilled in the art, and those skilled in the art can flexibly choose according to their needs, and there is no limitation on this.

In the battery device provided by the embodiment of the present utility model, before assembling, the battery cell can be placed inside the first half shell 11, and the insulating rubber ring 2 can be sleeved on the outer surface of the first cylindrical side wall . Then, the open end of the first half-shell 11 is opposed to the open end of the second half-shell, and the first cylindrical side wall is inserted into the second cylindrical side wall. Inside the first half-shell 11 and the second half-shell 12 are formed accommodating cavities for accommodating batteries.

As shown in FIG. 3, a closing structure 120 bent toward the first cylindrical side wall is formed at a position of the second cylindrical side wall close to the opening end. The formation of the closing structure 120 is mainly formed by squeezing the second cylindrical side wall in a direction close to the first cylindrical side wall. The purpose is to enable a better sealing structure to be formed between the first half-shell 11 and the second half-shell 12 to improve the sealing performance of the entire battery device.

The battery device provided by the embodiment of the utility model can release the pressure in time under the condition that the battery device is sealed, and the battery device can be used more safely.

In the battery device provided by the embodiment of the present utility model, when the annular protrusion 21 is provided on the surface of the insulating rubber ring 2, a person skilled in the art can flexibly choose the number and form of the installation according to needs, and there is no restriction on this.

In a specific embodiment of the present invention, the number of the annular protrusion 21 may be one. The annular protrusion 21 may be arranged around the outer surface of the insulating rubber ring 2, for example. At this time, a circle of raised structures is formed on the outer surface of the insulating rubber ring 2, and recessed structures are formed on the upper and lower sides of the raised structure, which is helpful for hanging glue and can also contain more glue. This structural design helps to seal the battery device well.

In addition, when an annular protrusion 21 is provided on the outer surface of the insulating rubber ring 2, the annular protrusion 21 can also be arranged on the outer surface of the insulating rubber ring 2 in a spirally wound manner. 2 has an uneven structure on the outer surface. The structural design also helps to hang glue and can hold more glue.

In a specific embodiment of the present invention, the annular protrusion 21 may also be provided in multiple. As shown in Figures 3, 4 and 6, a plurality of annular protrusions 21 are all arranged around the outer surface of the insulating rubber ring 2, and the plurality of annular protrusions 21 are arranged at intervals on the outer surface of the insulating rubber ring 2. A groove is formed between any two adjacent annular protrusions 21. In this specific embodiment, the multiple annular protrusions 21 are equivalent to forming double or multiple sealing strips, which is beneficial to better improve the sealing performance of the battery device. More glue can be accommodated in the groove formed between the adjacent annular protrusions 21. Under this structure, the ingress of external water, dust, etc. can be prevented, and the pressure can be easily released from the internal. At the same time, the uneven structure formed by the plurality of annular protrusions 21 can be used to contain the electrolyte. When the battery device is exposed due to extreme conditions, the electrolyte will not directly overflow and flow out, thereby avoiding danger.

It should be noted that when a plurality of annular protrusions 21 are provided on the outer surface of the insulating rubber ring 2, the plurality of annular protrusions 21 may be arranged parallel to each other. For example, the plurality of annular protrusions 21 are arranged at equal intervals and parallel to each other. Of course, the present utility model is not limited to this solution. The plurality of annular protrusions 21 are also arranged to cross each other, etc., which is not limited by those skilled in the art.

As shown in Figures 3 and 4, the annular protrusion 21 has an upper end surface and a lower end surface, respectively. Among them, the lower end surface of the annular protrusion 21 refers to the end surface close to the open end of the first half-shell 11, and the upper end surface of the annular protrusion 21 refers to the end surface away from the open end of the first half-shell 11, and the end surface of the annular protrusion 21 The upper and lower end faces are arranged oppositely.

In the embodiment of the present invention, the lower end surface of the annular protrusion 21 forms a chamfered structure. This structure is very conducive to the assembly of the insulating rubber ring 2 so that the insulating rubber ring 2 can be easily inserted into the gap between the first cylindrical side wall and the second cylindrical side wall. Optionally, the chamfered structure may be, for example, a circular arc structure, or of course, it may also be an inclined surface structure. Further, when the lower end surface of the annular protrusion 21 has a slope structure, the lower end surface of the annular protrusion 21 may form an obtuse angle structure with the surface of the insulating rubber ring 2 as a whole, or the root of the lower end surface of the annular protrusion 21 and the insulating rubber ring 2 may form an obtuse angle structure. The surface of the rubber ring 2 forms an obtuse angle structure, which is not limited.

In the embodiment of the present invention, the upper end surface of the annular protrusion 21 and the surface of the insulating rubber ring 2 form an acute angle structure. The structure can well prevent the entry of external water, and can play a good waterproof effect. Of course, the upper end surface of the annular protrusion 21 and the surface of the insulating rubber ring 2 can also be designed as a straight structure, a sharp-angled structure, or an arc-shaped structure as required, and there is no limitation on this.

In addition, the edge of the annular protrusion 21 may be wavy, for example. Of course, the edge of the annular protrusion 21 may also have other shapes, such as a sawtooth shape, etc., which can be adjusted by those skilled in the art according to the actual situation, and this is not limited.

In the present invention, the part of the insulating rubber ring 2 close to the open end of the first half shell is defined as the lower part of the insulating rubber ring 2. As shown in FIG. 3, the lower part of the insulating rubber ring 2 is, for example, an L-shaped structure 22, which can wrap the edge portion of the open end of the first half shell 11 to provide a certain protective effect.

Among them, the insulating rubber ring 2 can be made of an insulating plastic material. Specifically, the material of the insulating rubber ring 2 may be PE material, PP material, PET material, PA material, etc., for example. The insulating rubber ring 2 may be made of an insulating plastic material through injection molding or extrusion molding, for example.

As shown in Figure 3, in the present invention, the insulating rubber ring 2 is not completely located between the first cylindrical side wall and the second cylindrical side wall, but the insulating rubber ring 2 is also removed from the second half shell 12 The open end of φ2 protrudes to the outside by a predetermined length, that is, the insulating rubber ring 2 is exposed from the second half-shell 12. In addition, a section of the insulating rubber ring 2 protruding from the open end of the second half-shell 12 is attached to the first cylindrical side wall of the first half-shell 11. The purpose of adopting this design in the present utility model is to effectively prevent the first half-shell 11 and the second half-shell 12 from being short-circuited.

According to another embodiment of the present invention, an electronic device is also provided.

The electronic device provided by the embodiment of the present invention includes an electronic device housing and the above-mentioned battery device. For example, a PCB is provided inside the housing of an electronic device. The battery device is also arranged inside the housing of the electronic device, and is electrically connected to the electrical device in the electronic device through the PCB, so as to supply power to the electrical device so that the electronic device can be used normally.

The electronic device may be, but is not limited to, a mobile phone, a tablet computer, a smart watch, a notebook computer, a game console, a walkie-talkie, a headset, an e-book reader and other products.

The electronic device provided by the embodiment of the utility model has the characteristics of excellent safety performance.

Although some specific embodiments of the present invention have been described in detail through examples, those skilled in the art should understand that the above examples are only for illustration and not for limiting the scope of the present invention. Those skilled in the art should understand that the above embodiments can be modified without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

A battery device, characterized in that it comprises:

A first half-shell, the first half-shell includes a first cylindrical side wall and a top cover provided at one end of the first cylindrical side wall; and

A second half-shell, the second half-shell comprising a second cylindrical side wall and a bottom cover provided at one end of the second cylindrical side wall;

The first half-shell and the second half-shell are plugged together with open ends facing each other, and the second cylindrical side wall is at least partially wrapped around the outer side of the first cylindrical side wall;

Wherein, an insulating rubber ring is provided between the first cylindrical side wall and the second cylindrical side wall, and an annular protrusion is provided on the surface of the insulating rubber ring facing the second cylindrical side wall .
The battery device according to claim 1, wherein the first half-shell and the second half-shell enclose an accommodating cavity, and an electric core is accommodated in the accommodating cavity.
The battery device according to claim 1 or 2, characterized in that there are a plurality of said annular protrusions.
The battery device according to any one of claims 1-3, wherein a plurality of the annular protrusions are arranged at intervals on the surface of the insulating rubber ring, and are arranged on any two adjacent annular protrusions. A groove is formed between.
The battery device according to any one of claims 1 to 4, wherein the plurality of annular protrusions are arranged at equal intervals and parallel to each other.
The battery device according to claim 1 or 2, wherein the number of annular protrusions is one.
The battery device according to any one of claims 1-6, wherein: the lower end surface of the annular protrusion forms a chamfered structure.
7. The battery device according to any one of claims 1-7, wherein the upper end surface of the annular protrusion and the surface of the insulating rubber ring form an acute angle structure.
The battery device according to any one of claims 1-8, wherein the edge of the annular protrusion is wavy.
An electronic device, characterized by comprising the battery device according to any one of claims 1-9.