Battery middle frame with anti-deformation structure

Abstract

The utility model relates to a battery middle frame with an anti-deformation structure, which can effectively enhance the strength of the middle frame, avoid deformation of the middle frame in a glue filling process, improve the reliability of a battery and prolong the service life of the battery. Comprising a hollow frame, a containing cavity is formed in the hollow frame, any side wall of the containing cavity is provided with a PCB mounting groove, the other side wall, opposite to the PCB mounting groove, in the containing cavity is further provided with a first connecting part, and the first connecting part extends into the containing cavity; a plurality of first connecting parts are vertically arranged on the hollow frame, a plurality of second connecting parts are vertically arranged on the extending end faces of the first connecting parts, the upper ends and the lower ends of the second connecting parts extend out of the first connecting parts respectively, a plurality of glue injection cavities are formed between the side walls of the second connecting parts, and glue injection openings communicated with the glue injection cavities are further formed in the hollow frame. The utility model is applicable to the field of manufacturing of injection molding inserts in batteries.

Description

Technical Field

[0001] The utility model relates to an internal injection-molded insert of a battery, in particular to a battery middle frame with an anti-deformation structure. Background Art

[0002] The battery mainly consists of a battery pack, a pole piece, a PCB board, a battery middle frame and a heat dissipation cover. Usually, after placing the pole piece, battery pack, PCB board and other components into the battery middle frame, the heat dissipation cover is pressed into the battery middle frame, and finally the battery middle frame is filled with glue to fix and seal the battery components to complete the battery packaging. With the popularity of smart devices such as mobile phones and tablets, in order to improve the portability of the devices, the size of smart devices is getting smaller and lighter, so the battery middle frame is replaced with an integrally molded injection molded part, and several injection ports are opened on the injection molded middle frame to complete the glue filling and packaging. Due to the elongation characteristics of plastics, when filling glue, the injection molded middle frame is easily squeezed by the glue and deformed, resulting in a decrease in battery performance or even damage and scrapping; if a metal middle frame is used instead, the weight of the battery will increase, and the production cost will also increase, which is not economical for mass production. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a battery middle frame with an anti-deformation structure that effectively enhances the strength of the middle frame, avoids deformation of the middle frame during the glue filling process, and improves the reliability and service life of the battery.

[0004] The technical solution adopted by the utility model is: the utility model includes a hollow frame, a accommodating cavity is formed inside the hollow frame, a PCB board mounting groove is arranged on any side wall of the accommodating cavity, a first connecting part is also arranged on the other side wall opposite to the PCB board mounting groove in the accommodating cavity, the first connecting part extends into the accommodating cavity, a plurality of second connecting parts are vertically arranged on the extended end surface of the first connecting part, the upper and lower ends of the second connecting part respectively extend to the outside of the first connecting part, and a plurality of glue injection cavities are formed between the side walls, and a glue injection port connected to the glue injection cavity is also arranged on the hollow frame.

[0005] Furthermore, the first connection portion is integrally injection-molded with the corresponding side wall, and the side wall is evenly divided into an upper layer and a lower layer, and both left and right side ends of the first connection portion in a horizontal extension direction are designed as inclined surfaces.

[0006] Furthermore, the inclined surface is inclined from the extended end surface of the first connecting portion toward the side wall connected to the first connecting portion.

[0007] Furthermore, six groups of the second connecting parts are equidistantly arranged on the first connecting part, and the vertical heights of the second connecting parts are consistent with the corresponding side walls.

[0008] Furthermore, the glue injection ports are arranged at four corners of the upper surface of the hollow frame.

[0009] Furthermore, an outlet port electrically connected to the outside is also provided in the PCB board mounting groove.

[0010] Finally, a plurality of reinforcing ribs are arranged on the upper and lower walls of the PCB board installation groove.

[0011] Compared with the prior art, the beneficial effects of the utility model are as follows: the utility model sets an anti-deformation structure inside the hollow frame, and forms multiple groups of glue injection cavities on the side wall naturally by setting the first connection part and six groups of the second connection parts formed by integral injection molding on the side wall at one end opposite to the PCB board installation groove, so that when the glue is poured into the battery, the glue filled in the glue injection cavity generates a force toward the accommodating cavity on the side wall connected to the first connection part when solidifying, effectively avoiding the deformation of the hollow frame due to the characteristics of the plastic, and improving the reliability and service life of the battery; the inclined design at both ends of the first connection part can make the glue injection ports set at the two corners communicate with the glue injection cavities located in the upper layer and the lower layer, ensuring that the side wall is evenly stressed, and further improving the effect of the utility model. Therefore, the utility model effectively enhances the strength of the middle frame, avoids deformation of the middle frame during the glue pouring process, and improves the reliability and service life of the battery. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0013] Figure 2 It is a schematic diagram of the shaft side structure of the utility model;

[0014] Figure 3 yes Figure 1 Schematic diagram of the cross-sectional structure of AA;

[0015] Figure 4 yes Figure 1 Schematic diagram of a partially enlarged cross section of BB. DETAILED DESCRIPTION

[0016] like Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, the utility model comprises a hollow frame 1, wherein a housing cavity 2 is formed inside the hollow frame 1, a PCB board mounting groove 3 is arranged on any side wall of the housing cavity 2, a first connecting portion 4 is also arranged on the other side wall opposite to the PCB board mounting groove 3 in the housing cavity 2, the first connecting portion 4 extends into the housing cavity 2, a plurality of second connecting portions 5 are vertically arranged on the extended end surface of the first connecting portion 4, the upper and lower ends of the second connecting portion 5 extend to the outside of the first connecting portion 4 respectively, and a plurality of glue injection cavities 6 are formed between the side walls, and a glue injection port 7 connected to the glue injection cavity 6 is also arranged on the hollow frame 1. An outlet port 11 electrically connected to the outside is also arranged in the PCB board mounting groove 3. A plurality of reinforcing ribs are arranged in both the upper and lower wall surfaces in the PCB board mounting groove 3. When glue is poured into the battery, the glue is poured into the hollow frame 1 from the glue injection port 7, and fills the glue injection cavities 6 generated on the side walls by the first connecting part 4 and the plurality of the second connecting parts 5 one by one. When the glue solidifies, the glue in each of the glue injection cavities 6 will jointly generate a force toward the inside of the accommodating cavity 2, pulling the side wall back toward the accommodating cavity 2, and pressing against the battery installed in the hollow frame 1, so that the hollow frame 1 maintains its original shape and is not easily deformed, resulting in poor battery packaging and affecting the production packaging accuracy of the battery.

[0017] In the present utility model, the first connection part 4 is integrally injection molded with the corresponding side wall, and the side wall is evenly divided into an upper layer 8 and a lower layer 9. The left and right ends of the first connection part 4 in the horizontal extension direction are both designed with a slope 10. The slope 10 is inclined from the extended end surface of the first connection part 4 to the side wall connected to the first connection part 4. Six groups of the second connection parts 5 are equidistantly arranged on the first connection part 4. The second connection parts 5 are integrally molded with the first connection part 4, and the vertical height is consistent with the corresponding side wall. The glue injection port 7 is arranged at the four corners of the upper surface of the hollow frame 1. In this embodiment, the first connection part 4 evenly divides the side wall surface connected to itself into two parts, the upper layer 8 and the lower layer 9; the six groups of the second connection parts 5 arranged on the first connection part 4 are also equidistantly distributed, which further ensures that the tension generated on the side wall surface in each of the glue injection cavities 6 when the glue solidifies later, so that the force on the side wall surface is more uniform, and the anti-deformation effect of the utility model is enhanced.

[0018] The utility model is provided with an anti-deformation structure inside the hollow frame 1, and a plurality of groups of glue injection cavities 6 are naturally formed on the side wall by the first connecting part 4 and six groups of the second connecting parts 5 which are integrally formed by injection molding on the side wall at one end opposite to the PCB board mounting groove 3. In this way, after glue is poured into the battery, when the glue filled in the glue injection cavity 6 solidifies, a force toward the accommodating cavity 2 is generated on the side wall connected to the first connecting part 4, thereby effectively preventing the hollow frame 1 from being deformed due to the characteristics of the plastic, and improving the reliability and service life of the battery; the inclined surfaces 10 at both ends of the first connecting part 4 are designed to enable the glue injection ports 7 arranged at the two corners to be connected with the glue injection cavities 6 located in the upper layer 8 and the lower layer 9, thereby ensuring that the side wall is subjected to uniform force, and further improving the effect of the utility model.

[0019] Finally, it should be emphasized that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various changes and modifications. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A battery middle frame with an anti-deformation structure, comprising a hollow frame (1), a receiving cavity (2) formed inside the hollow frame (1), a PCB board mounting groove (3) being arranged on any side wall of the receiving cavity (2), characterized in that: A first connecting portion (4) is also provided on the other side wall of the accommodating cavity (2) opposite to the PCB board mounting groove (3), the first connecting portion (4) extending into the accommodating cavity (2), a plurality of second connecting portions (5) are vertically provided on the extended end surface of the first connecting portion (4), the upper and lower ends of the second connecting portions (5) respectively extend outside the first connecting portion (4), and a plurality of glue injection cavities (6) are formed between the side walls, and a glue injection port (7) connected to the glue injection cavity (6) is also provided on the hollow frame (1).

2. The battery middle frame with an anti-deformation structure according to claim 1, characterized in that: The first connecting portion (4) is integrally injection-molded with the corresponding side wall, and the side wall is evenly divided into an upper layer (8) and a lower layer (9); both left and right side ends of the first connecting portion (4) in the horizontal extension direction are designed as inclined surfaces (10).

3. The battery middle frame with an anti-deformation structure according to claim 2, characterized in that: The inclined surface (10) is inclined from the extended end surface of the first connecting portion (4) toward the side wall connected to the first connecting portion (4).

4. The battery middle frame with an anti-deformation structure according to claim 3, characterized in that: Six groups of the second connecting parts (5) are equidistantly arranged on the first connecting part (4); the second connecting parts (5) are integrally formed with the first connecting part (4), and the vertical height is consistent with the corresponding side wall.

5. The battery middle frame with an anti-deformation structure according to claim 4, characterized in that: The glue injection ports (7) are arranged at the four corners of the upper surface of the hollow frame (1).

6. The battery middle frame with an anti-deformation structure according to claim 5, characterized in that: An outlet port (11) electrically connected to the outside is also provided in the PCB board mounting groove (3).

7. The battery middle frame with an anti-deformation structure according to claim 6, characterized in that: A plurality of reinforcing ribs are arranged on both the upper and lower wall surfaces of the PCB board installation groove (3).

Images