CN219203428U - Plane welding structure and battery - Google Patents

Abstract

The application provides a plane welded structure and battery, foretell plane welded structure, including connecting wire and circuit board, the first end of connecting wire is used for being connected with the battery, its characterized in that, the second end of connecting wire is formed with the plane welding body, the welding of the pad of plane welding body and circuit board. According to the planar welding structure, the planar welding body is formed at the second end of the connecting wire, and the bonding pad of the circuit board is planar, so that when a user welds the planar welding body of the connecting wire with the bonding pad of the circuit board, the planar welding body is in surface-to-surface contact with the bonding pad, the welding area of the planar welding body and the bonding pad is increased, the linear welding of the traditional connecting wire and the bonding pad is effectively improved, and the welding firmness of the connecting wire and the circuit board is improved. In addition, in practical application, only need be provided with the plane welding body at the second end of connecting wire just can show the fastness that improves connecting wire and pad, not only easy operation and with low costs.

Description

Plane welding structure and battery

Technical Field

The utility model relates to the technical field of circuit board connection, in particular to a plane welding structure and a battery.

Background

With the continuous popularization of new energy, the market continuously emerges in the power battery industry of electric automobiles, electric trains, electric bicycles and the like. The power battery industry typically requires batteries to power them, i.e., the connection wires of the batteries need to be soldered to the circuit board during assembly so that the batteries can provide electrical power thereto.

However, since the cross section of the connecting wire of the traditional battery is mostly circular, the welding contact surface of the connecting wire and the circuit board is small, namely linear, so that the phenomenon of infirm welding between the connecting wire and the circuit board is easy to occur, and the battery is easy to fall off in the use process to cause the bad phenomena of short circuit or power failure and the like of the battery, thereby bringing inconvenience to the use of consumers, and even causing the phenomenon of ignition when serious.

As disclosed in patent CN206211184U, a connection line structure with bending resistance is disclosed, and specifically, the connection line structure comprises a connector, a PCB board disposed on the connector, and an electric wire connected with the PCB board, wherein a first bonding pad is disposed on the front surface of the PCB board, a second bonding pad opposite to the first bonding pad is disposed on the back surface of the PCB board, a through hole is disposed on the first bonding pad and the second bonding pad, solder is disposed on the first bonding pad, the second bonding pad and the through hole, one end of the electric wire is connected with the first bonding pad and the second bonding pad, the connector comprises a housing, an insertion housing slidably connected with the housing through a protruding member, and as can be seen in fig. 1 and 2, the contact surface between the electric wire connected with the PCB board and the first bonding pad or the second bonding pad is small, i.e. linear, and the phenomenon that the electric wire and the circuit board are easily not firmly welded easily exists.

Disclosure of Invention

The utility model aims to overcome the defects in the prior art and provides a plane welding structure with strong welding firmness and a battery.

The aim of the utility model is realized by the following technical scheme:

the utility model provides a plane welded structure and battery, includes connecting wire and circuit board, the first end of connecting wire is used for being connected with the battery, its characterized in that, the second end of connecting wire is formed with the plane welding body, the plane welding body with the pad welding of circuit board.

In one embodiment, the connecting wire comprises a wire core and an insulating layer, the wire core comprises a connecting end, a connecting body and a plane welding body, the first end of the connecting body is connected with the connecting end, the connecting end is used for being connected with a battery, the second end of the connecting body is connected with the plane welding body, the plane welding body is welded with a bonding pad of the circuit board, the insulating layer is coated on the outer surface of the connecting body, and the second end of the connecting body is at least partially exposed out of the insulating layer.

In one embodiment, the planar welding body is arranged at the second end of the connecting body in a protruding manner; and/or the number of the groups of groups,

the section of the wire core is circular.

In one embodiment, the cross section of the planar welding body is rectangular; and/or the number of the groups of groups,

the section of the plane welding body is square; and/or;

the section of the plane welding body is in a parallel regular polygon and/or;

the projected area of the planar welding body is not larger than the area of the bonding pad of the circuit board.

In one embodiment, the planar welding structure further comprises an insulating shield for housing and sealing the planar welding body.

In one embodiment, the planar welding structure further comprises a first half-arc-shaped insulating piece and a second half-arc-shaped insulating piece, the insulating protective cover is formed with a cavity, the cavity is provided with an opening, the cavity is used for accommodating the planar welding body, the first half-arc-shaped insulating piece is arranged on the side wall of the opening, the second half-arc-shaped insulating piece is buckled and arranged on the first half-arc-shaped insulating piece, and the second half-arc-shaped insulating piece and the first half-arc-shaped insulating piece form a containing cavity, and the containing cavity is used for accommodating the second end of the connecting body exposed out of the insulating layer.

In one embodiment, the first semi-arc-shaped insulating piece is provided with a clamping block, the second semi-arc-shaped insulating piece is provided with a clamping groove, the clamping block is matched with the clamping groove, and the clamping block is clamped in the clamping groove.

In one embodiment, the planar welding structure further comprises a first adhesive layer, a second adhesive layer and a third adhesive layer, the insulation protection cover is connected with the circuit board through the first adhesive layer, the first semi-arc-shaped insulation piece is connected with the insulation layer through the second adhesive layer, and the second semi-arc-shaped insulation piece is connected with the insulation layer through the third adhesive layer.

In one embodiment, the insulating shield is a transparent insulating shield; and/or the number of the groups of groups,

the first half-arc-shaped insulating piece is a transparent insulating tube; and/or the number of the groups of groups,

the first half-arc-shaped insulating piece is a transparent insulating tube; and/or the number of the groups of groups,

the first half-arc-shaped insulating piece and the insulating protective cover are integrally formed.

A battery comprising a planar welded structure as described in any one of the embodiments above.

Compared with the prior art, the utility model has at least the following advantages:

1. according to the planar welding structure, the planar welding body is formed at the second end of the connecting wire, and the bonding pad of the circuit board is planar, so that when a user welds the planar welding body of the connecting wire with the bonding pad of the circuit board, the planar welding body is in surface-to-surface contact with the bonding pad, the welding area of the planar welding body and the bonding pad is increased, the linear welding of the traditional connecting wire and the bonding pad is effectively improved, and the welding firmness of the connecting wire and the circuit board is improved.

2. According to the planar welding structure, in practical application, the firmness of the connecting wire and the bonding pad can be remarkably improved only by arranging the planar welding body at the second end of the connecting wire, and the planar welding structure is simple to operate and low in cost.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a planar soldering structure according to an embodiment of the present utility model;

FIG. 2 is a schematic view of the planar welding structure of FIG. 1 in another direction;

FIG. 3 is a cross-sectional view of the planar weld structure of FIG. 2 in one direction;

FIG. 4 is a schematic view of an insulation shield and a first semi-arc insulator and a second semi-arc insulator according to an embodiment of the present utility model;

fig. 5 is a schematic structural diagram of an insulation shield connected to a second semi-arc insulation member according to an embodiment of the present utility model.

Reference numerals: 10. a planar welding structure; 100. a connecting wire; 110. a wire core; 111. a connection end; 112. a connecting body; 113. a planar welded body; 120. an insulating layer; 200. a circuit board; 210. a bonding pad; 300. an insulating protective cover; 310. a cavity; 311. an opening; 400. a first semi-arcuate insulator; 500. a second semi-arcuate insulator; 510. a clamping groove; 600. a receiving chamber; 700. a first adhesive layer.

Detailed Description

In order that the utility model may be readily understood, a more complete description of the utility model will be rendered by reference to the appended drawings. The drawings illustrate preferred embodiments of the utility model. This utility model may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

The application provides a plane welding structure, including connecting wire and circuit board, the first end of connecting wire is used for being connected with the battery, its characterized in that, the second end of connecting wire is formed with the plane welding body, the plane welding body with the pad welding of circuit board.

According to the planar welding structure, the planar welding body is formed at the second end of the connecting wire, and the bonding pad of the circuit board is planar, so that when a user welds the planar welding body of the connecting wire with the bonding pad of the circuit board, the planar welding body is in surface-to-surface contact with the bonding pad, the welding area of the planar welding body and the bonding pad is increased, the linear welding of the traditional connecting wire and the bonding pad is effectively improved, and the welding firmness of the connecting wire and the circuit board is improved. In addition, in practical application, only need be provided with the plane welding body at the second end of connecting wire just can show the fastness that improves connecting wire and pad, not only easy operation and with low costs.

For better understanding of the technical solutions and advantageous effects of the present application, the following details are further described with reference to specific embodiments:

as shown in fig. 1 to 3, the planar soldering structure 10 in an embodiment includes a connection wire 100 and a circuit board 200, wherein a first end of the connection wire 100 is used for connection with a battery, and the planar soldering body 113 is formed at a second end of the connection wire 100, and the planar soldering body 113 is soldered with a pad 210 of the circuit board 200.

In the above-mentioned planar soldering structure 10, since the second end of the connecting wire 100 is formed with the planar soldering body 113, and since the soldering pad 210 of the circuit board 200 is planar, when the user welds the planar soldering body 113 of the connecting wire 100 to the soldering pad 210 of the circuit board 200, the contact between the planar soldering body 113 and the soldering pad 210 is a surface-to-surface contact, thus increasing the soldering area between the planar soldering body 113 and the soldering pad 210, effectively improving the linear soldering between the conventional connecting wire 100 and the soldering pad 210, and further improving the soldering firmness between the connecting wire 100 and the circuit board 200.

Further, in practical application, the planar welding structure 10 can significantly improve the firmness of the connecting wire 100 and the bonding pad 210 by only providing the planar welding body 113 at the second end of the connecting wire 100, which is simple in operation and low in cost.

In one embodiment, the connection wire 100 includes a wire core 110 and an insulating layer 120, the wire core 110 includes a connection end 111, a connection body 112 and the plane welding body 113, a first end of the connection body 112 is connected with the connection end 111, the connection end 111 is connected with a battery, a second end of the connection body 112 is connected with the plane welding body 113, the plane welding body 113 is welded with a bonding pad 210 of the circuit board 200, so that the first end and the second end of the connection wire 100 can be respectively connected with the battery and the circuit board 200 to realize communication between the battery and the circuit board 200, the insulating layer 120 is wrapped on an outer surface of the connection body 112, so that the insulating layer 120 can protect the wire core 110 from being damaged by the outside, thereby improving use safety, and the second end of the connection body 112 is at least partially exposed to the insulating layer 120, so that a user can better weld the plane welding body 113 on the bonding pad 210. In this embodiment, as shown in fig. 2 and 3, the section of the core 110 is circular.

In this embodiment, the wire core 110 may be pressed into a square shape with a dedicated molding die to obtain the plane welding body 113 of different shapes. For example, the square may be rectangular, square, or parallelogram, so as to ensure surface-to-surface bonding when the planar bonding body 113 is bonded to the pad 210. Of course, the shape of the planar welding body 113 is not limited to the above-described shape, and may be a trapezoid. Further, in order to better enhance the firmness of the planar solder 113 and the bonding pad 210, in one embodiment, the planar solder 113 is disposed at the second end of the connector 112 in a protruding manner. Further, in one embodiment, the projected area of the planar solder body 113 is not larger than the area of the bonding pad 210 of the circuit board 200, so that the welding compactness of the planar solder body 113 and the bonding pad 210 is ensured under the condition that the planar solder body 113 and the bonding pad 210 have better firmness, and the structural compactness of the connecting wire 100 and the bonding pad 210 is improved.

As shown in fig. 3, in one embodiment, the planar welding structure 10 further includes an insulating protective cover 300, where the insulating protective cover 300 is used to accommodate and seal the planar welding body 113, so as to improve the safety of using the planar welding structure 10.

In order to further improve the use safety of the planar welding structure 10, as shown in fig. 4, in one embodiment, the planar welding structure 10 further includes a first semi-arc-shaped insulating member 400 and a second semi-arc-shaped insulating member 500, the insulating protection cover 300 is formed with a cavity 310, the cavity 310 has an opening 311, the cavity 310 is used for accommodating the planar welding body 113, the first semi-arc-shaped insulating member 400 is disposed on a side wall of the opening 311, the second semi-arc-shaped insulating member 500 is buckled and disposed on the first semi-arc-shaped insulating member 400, and forms an accommodating cavity 600 with the first semi-arc-shaped insulating member 400, and the accommodating cavity 600 is used for accommodating the second end of the connecting body 112 exposed out of the insulating layer 120, so as to improve the use safety of the wire core 110.

In one embodiment, the first semi-arc insulator 400 is provided with a locking block, as shown in fig. 5, the second semi-arc insulator 500 is provided with a locking groove 510, the locking block is adapted to the locking groove 510, and the locking block is locked in the locking groove 510, so as to realize the detachable connection of the first semi-arc insulator 400 and the second semi-arc insulator 500, so that a user can quickly detach and install the second semi-arc insulator.

In one embodiment, the planar welding structure 10 further includes a first adhesive layer 700, a second adhesive layer, and a third adhesive layer, the insulation shield 300 is connected to the circuit board 200 through the first adhesive layer 700, as shown in fig. 3, the first semi-arc insulator 400 is connected to the insulation layer 120 through the second adhesive layer, and the second semi-arc insulator 500 is connected to the insulation layer 120 through the third adhesive layer, so as to improve the connectivity between the insulation shield 300 and the circuit board 200, and improve the connectivity between the first semi-arc insulator 400 and the second semi-arc insulator 500 and the insulation layer 120. Further, the first adhesive layer 700 is disposed on one surface of the insulation protection cover 300 facing the circuit board 200, the second adhesive layer is disposed on the first half-arc-shaped insulation member 400 facing the insulation layer 120, and the third adhesive layers are disposed on the first half-arc-shaped insulation member 400 facing the insulation layer 120, so as to realize the adhesive connection between the insulation protection cover 300 and the circuit board 200, and the first half-arc-shaped insulation member 400 and the second half-arc-shaped insulation member 500 are in adhesive connection with the insulation layer 120.

Further, it is convenient for the user to observe the situation of the planar welding body 113 in the insulation shield 300 during the use process, for example, whether a serious off-welding phenomenon occurs, and in one embodiment, the insulation shield 300 is a transparent insulation shield 300.

Likewise, to facilitate the user's observation of the situation during use of the insulated wire core 110, in one embodiment, the first semi-arc insulator 400 is a transparent insulating tube; of course, it may be implemented in other manners, for example, in other embodiments, the first semi-arc insulator 400 is a transparent insulating tube.

To improve the connection between the first semi-arc insulator 400 and the insulation shield 300, in one embodiment, the first semi-arc insulator 400 is integrally formed with the insulation shield 300.

The present application also provides a battery comprising the planar welding structure 10 described in any of the embodiments above. It can be appreciated that, due to the adoption of the planar welding structure 10, the connection firmness of the battery, the connecting wire 100 and the circuit board 200 can be remarkably improved, so that the phenomenon that the battery is easy to fall off after long-time use is effectively avoided.

Compared with the prior art, the utility model has at least the following advantages:

1. in the above-mentioned planar soldering structure 10, since the second end of the connecting wire 100 is formed with the planar soldering body 113, and since the soldering pad 210 of the circuit board 200 is planar, when the user welds the planar soldering body 113 of the connecting wire 100 to the soldering pad 210 of the circuit board 200, the contact between the planar soldering body 113 and the soldering pad 210 is a surface-to-surface contact, thus increasing the soldering area between the planar soldering body 113 and the soldering pad 210, effectively improving the linear soldering between the conventional connecting wire 100 and the soldering pad 210, and further improving the soldering firmness between the connecting wire 100 and the circuit board 200.

2. In practical application, the planar welding structure 10 can significantly improve the firmness of the connecting wire 100 and the bonding pad 210 by only providing the planar welding body 113 at the second end of the connecting wire 100, and has simple operation and low cost.

The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims (9)

1. The utility model provides a plane welded structure, includes connecting wire and circuit board, its characterized in that, the connecting wire includes sinle silk and insulating layer, the sinle silk includes link, connector and plane welding body, the first end of connector with the link is connected, the link is used for being connected with the battery, the second end of connector with plane welding body is connected, plane welding body with the pad welding of circuit board, the insulating layer cladding set up in the surface of connector, and the second end of connector at least part expose in the insulating layer.

2. The planar welding structure according to claim 1, wherein the planar welding body is provided convexly at the second end of the connecting body; and/or the number of the groups of groups,

the section of the wire core is circular.

3. The planar welding structure according to claim 1, wherein the planar welding body has a rectangular cross section; and/or the number of the groups of groups,

the section of the plane welding body is square; and/or;

the section of the plane welding body is in a parallel regular polygon and/or;

the projected area of the planar welding body is not larger than the area of the bonding pad of the circuit board.

4. A planar welding structure as claimed in any one of claims 1 to 3 further comprising an insulating shield for receiving and sealing the planar welding body.

5. The planar welding structure of claim 4, further comprising a first semi-arc insulator and a second semi-arc insulator, wherein the insulating shield forms a cavity, the cavity has an opening, the cavity is configured to receive the planar welding body, the first semi-arc insulator is disposed on a side wall of the opening, and the second semi-arc insulator is fastened to the first semi-arc insulator and forms a receiving cavity with the first semi-arc insulator, and the receiving cavity is configured to receive a second end of the connector exposed from the insulating layer.

6. The planar welding structure according to claim 5, wherein the first semi-arc-shaped insulating member is provided with a clamping block, the second semi-arc-shaped insulating member is provided with a clamping groove, the clamping block is matched with the clamping groove, and the clamping block is clamped in the clamping groove.

7. The planar solder structure of claim 5, further comprising a first adhesive layer, a second adhesive layer, and a third adhesive layer, wherein said insulating shield is connected to said circuit board via said first adhesive layer, wherein said first semi-arcuate insulator is connected to said insulating layer via said second adhesive layer, and wherein said second semi-arcuate insulator is connected to said insulating layer via said third adhesive layer.

8. The planar welding structure of claim 5, wherein said insulating shield is a transparent insulating shield; and/or the number of the groups of groups,

the first half-arc-shaped insulating piece is a transparent insulating tube; and/or the number of the groups of groups,

the first half-arc-shaped insulating piece is a transparent insulating tube; and/or the number of the groups of groups,

the first half-arc-shaped insulating piece and the insulating protective cover are integrally formed.

9. A battery comprising the planar welded structure of any one of claims 1 to 8 and the battery.

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