CN215644672U

CN215644672U - Novel low-voltage injection molding battery packaging structure

Info

Publication number: CN215644672U
Application number: CN202121654520.6U
Authority: CN
Inventors: 黄超; 苏传新
Original assignee: Scud Fujian Electronic Co ltd
Current assignee: Scud Fujian Electronic Co ltd
Priority date: 2021-07-20
Filing date: 2021-07-20
Publication date: 2022-01-25
Anticipated expiration: 2031-07-20

Abstract

The utility model discloses a novel low-voltage injection molding battery packaging structure, which comprises a battery core and a circuit board, wherein the battery core is arranged on the circuit board; the battery cell is provided with a battery cell head; the head of the battery cell is welded with the circuit board, and an injection molding body is formed between the head of the battery cell and the circuit board through an injection molding process; a gasket is arranged on the outer side of the circuit board; the circuit board is specifically vertical to a near vertical surface and a far vertical surface in the length direction of the battery cell and parallel to an upper vertical surface and a lower vertical surface in the length direction of the battery cell; the injection molding body is contacted with the near vertical surface and the lower vertical surface; the pad is in contact with the upper vertical surface and the far vertical surface; the far elevation is parallel and level with the elevation far away from the head of the electric core on the injection molding body. By controlling the structure of the injection molding body, the thickness of the injection molding body is reduced under the conditions of ensuring safety, heat dissipation, integrity and the like, the volume is reduced, and the cost is saved.

Description

Novel low-voltage injection molding battery packaging structure

Technical Field

The utility model relates to the technical field of lithium batteries, in particular to a novel low-voltage injection molding battery packaging structure.

Background

With the development of battery technology, batteries are widely used in various industries. When the battery is subjected to mechanical damage (such as collision, extrusion, falling and the like) in the use process, the protection plate at the head part of the battery is easily subjected to external impact to cause failure. It is often necessary to wrap an insulating gasket around the cell header or to assemble the cell using an injection molded frame. The adhesive strength of the insulating tape is limited, and the reliability is poor. The injection molding plastic frame can improve the reliability but can occupy the whole space of the battery. In the prior art, a liner wrapping mode is adopted, so that the reliability is low. The injection molding battery head structure is adopted, although the reliability is strong, the occupied space size is large, and the heat dissipation is poor. And the single protection plate is adopted for injection molding and then packaging, so that the integrity is poor, the working procedures are more, and the cost is high.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects in the prior art and provide a novel low-voltage injection molding battery packaging structure which is small in occupied space, good in heat dissipation effect and good in integrity.

The utility model is realized by the following modes:

a novel low-voltage injection molding battery packaging structure comprises a battery core and a circuit board; the battery cell is provided with a battery cell head; the electric core head is welded with the circuit board, and the electric core is characterized in that: an injection molding body is formed between the head of the battery cell and the circuit board through an injection molding process; a gasket is arranged on the outer side of the circuit board; the circuit board is specifically vertical to a near vertical surface and a far vertical surface in the length direction of the battery cell and parallel to an upper vertical surface and a lower vertical surface in the length direction of the battery cell; the injection molding body is contacted with the near vertical surface and the lower vertical surface; the pad is in contact with the upper vertical surface and the far vertical surface; the far elevation is parallel and level with the elevation far away from the head of the electric core on the injection molding body.

Further, the head part of the battery cell is provided with a battery cell edge sealing and a tab; the lug extends out from the battery cell sealed edge, and the circuit board is welded and fixed with the lug.

The utility model has the beneficial effects that: through the structure of control injection molding body, reduced the thickness of injection molding body under the circumstances such as guaranteeing security, thermal diffusivity, wholeness, reduced the volume, practiced thrift the cost.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is an exploded view of the structure of the present invention;

FIG. 2 is a cross-sectional view of the inventive structure;

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "provided," "connected," and the like are to be construed broadly, such as "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example 1:

as shown in fig. 1-2, a novel low-voltage injection-molded battery packaging structure includes a battery core 4 and a circuit board 3; the cell has a cell head 41; the battery cell head 41 is welded with the circuit board 3, and an injection molding body 2 is formed between the battery cell head 41 and the circuit board 3 through an injection molding process; a gasket 1 is arranged on the outer side of the circuit board 3; the circuit board 3 is specifically perpendicular to a near vertical surface 31 and a far vertical surface 32 in the length direction of the battery cell 4, and parallel to an upper vertical surface 33 and a lower vertical surface 34 in the length direction of the battery cell 4; the injection molding body 2 is in contact with the near vertical surface 31 and the lower vertical surface 34; the pad 1 is in contact with the upper elevation 33 and the far elevation 32; the distal surface 32 is flush with a surface of the injection molded body 2 that is distal from the cell head 41.

Further, the cell head 41 has a cell edge seal 411 and a tab 412; the tab 412 extends out of the cell sealing edge 411, and the circuit board 3 is welded and fixed with the tab 412.

Compared with an injection molding scheme, the plastic of the upper vertical surface 33 and the far vertical surface 32 is changed into the liner 1, so that the space use of the mobile phone is reduced; the gasket 1 may be made of a multi-material composite, and the inner surface contacting the circuit board 3 may be made of an insulating material (e.g., PI), and the outer surface may be made of a heat dissipating material (e.g., graphite), thereby improving heat dissipation of the printed circuit board. Compared with a common packing pad mode and an injection molding mode, the low-pressure injection molding process and the packing pad process are combined, the reliability is emphasized, meanwhile, the packaging space occupied by the injection molding process is reduced, the reliability is high, and the heat dissipation effect is good.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A novel low-voltage injection molding battery packaging structure comprises a battery core (4) and a circuit board (3); the cell has a cell head (41); electric core head (41) and circuit board (3) welding, its characterized in that: an injection molding body (2) is formed between the battery cell head (41) and the circuit board (3) through an injection molding process; a gasket (1) is arranged on the outer side of the circuit board (3); the circuit board (3) is specifically vertical to a near vertical surface (31) and a far vertical surface (32) in the length direction of the battery cell (4) and parallel to an upper vertical surface (33) and a lower vertical surface (34) in the length direction of the battery cell (4); the injection molding body (2) is in contact with the near vertical surface (31) and the lower vertical surface (34); the pad (1) is in contact with the upper vertical surface (33) and the far vertical surface (32); the far elevation (32) is flush with the elevation, far away from the battery core head (41), of the injection molding body (2).

2. The novel low-voltage injection molding battery packaging structure of claim 1, characterized in that: the cell head (41) is provided with a cell edge sealing (411) and a tab (412); the pole lug (412) extends out of the battery cell edge sealing edge (411), and the circuit board (3) and the pole lug (412) are welded and fixed.