JP2012004106A - Battery pack connector and coupling method thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To firmly couple a wire to a battery cell or a protective circuit module in a battery pack connector and a coupling method thereof.SOLUTION: In one embodiment of the present invention, a connecting region includes: a first connecting member electrically connected to a battery cell or a protective circuit module; and a second connecting member formed on the first connecting member and coupled to a wire. The second connecting member has a pair of coupling members upwardly protruding for coupling the wire. Further, a solder may be additionally formed on the first connecting member, the second connecting member, the coupling members and the wire.

Description

  The present invention relates to a connector for a battery pack and a method for coupling the same.

  In general, in the case of notebook pancons, electric tools, electric bicycles, electric scooters, etc., it is difficult to use them for power supply with only one battery cell. Therefore, as a battery pack used for the power supply of such electronic equipment or electric equipment, a large number of battery cells are connected in series and in parallel.

  In addition, such a battery pack includes a protection circuit module in order to control charging and discharging states of the battery cell and prevent various dangers caused by overcharging and overdischarging. Further, a conductive wire for flowing a charging current or a discharging current is connected between the large number of battery cells and the protection circuit module.

The present invention provides a battery pack connector and a method of connecting the battery pack, in which wires are firmly connected to a battery cell or a protection circuit module.
The present invention provides a battery pack connector capable of quickly and safely coupling a wire to a battery cell or a protection circuit module, and a coupling method thereof.

  According to one aspect of the present invention, a connector for electrically connecting wires to at least one battery or protection circuit module has a first surface and a second surface, and the connector has at least one battery or A first connecting member electrically connected to the protection circuit module via the first surface; a second connecting member having a first surface and a second surface connected to the first connecting member; The first surface of the second connecting member is positioned in proximity to the second surface of the first connecting member, and the wire is electrically connected to the second connecting member.

  The at least one wire coupling member is connected to the at least one battery or the protection circuit module via the second coupling member and the first coupling member, so that the at least one wire coupling member is the second coupling member of the second coupling member. Formed on the surface.

  The first connecting member includes a main body and at least one extension that is connected to at least one terminal of the at least one battery or the protection circuit module and extends from the main body and is spaced apart from the main body. An incision is formed between the body and the at least one extension. A weld groove is formed in the body and at least one extension.

  The first and second connecting members have first and second side edges, and the first side edge of the first connecting member is connected to the first side edge of the second connecting member. Is done. The first side edge portion of the first connecting member is connected to the first side edge portion of the second connecting member via a connecting region integrally connected to the first and second connecting members. The connection area is a bendable area. The connector further includes a pressing portion that engages with the second side edge of the first and second connecting members. The pressurizing part is a “C” -shaped opening provided integrally with the second side edge of the first connecting member and in which the second connecting member is located.

The at least one wire coupling member includes first and second wire coupling members defining a wire housing space, and when the wire is located in the wire housing space, the first and second wire coupling members are the wire housing space. The wire is accommodated and maintained so as to be electrically connected to the second connecting member. The connector further includes a soldering material positioned over the wires of the wire receiving space and the first and second wire coupling members to additionally support the wire in the wire receiving space. The second surface of the second connecting member is formed with one or more concave grooves positioned in proximity to the first and second wire coupling members. The one or more recessed grooves are openings that extend from the second surface of the second connecting member to the first surface.
The first and second connecting members are formed of different materials.

  According to one aspect of the present invention, a method of coupling a wire to at least one battery or protection circuit module includes first and second connecting members electrically interconnected and a second side of a second connecting member. Positioning the second coupling member relative to the first coupling member such that the portion is positioned proximate to the second side of the first coupling member; and at least one first coupling member Electrically connecting the battery or the protection circuit module and electrically connecting the wire to the second connecting member.

  In the step of electrically connecting the wire to the second connecting member, the wire is mechanically coupled to a mounting structure formed on the second surface of the second connecting member. The first coupling member is coupled to at least one battery or protection circuit module before the wire is mechanically coupled to the mounting structure. The first coupling member is coupled to at least one battery or protection circuit module after the wire is mechanically coupled to the mounting structure.

  In the step of positioning the second connecting member with respect to the first connecting member, the second side portion of the second connecting member is positioned close to the second side portion of the first connecting member. The second connecting member is bent with respect to the first connecting member in the connecting region connected to the first and second connecting members. The second connecting member is fixed in proximity to the first connecting member. In the step of fixing the second connecting member close to the first connecting member, the end of the second connecting member is positioned in a space defined by the fixing member of the first connecting member.

  In the step of mechanically coupling the wire to the mounting structure, the wire is positioned on at least two coupling members defining the wire receiving area such that the at least two coupling members receive the wire in the wire receiving area. A soldering material is further formed on the wire and the two coupling members.

The connector of the battery pack according to the embodiment of the present invention has a flat first connecting member, and the first connecting member is easily welded to the battery cell or the protection circuit module. By forming the second coupling member and the pair of coupling members on the top, the wire is easily coupled to the second coupling member and the pair of coupling members.
In the battery pack connector and wire connection structure according to an embodiment of the present invention, the wire is connected to a pair of connecting members provided in the connector, or solder is formed after the wire is connected, or the wire is connected after the wire is connected. The member is clamped and then soldered, so that the connector-wire connection structure is more rigid.
Furthermore, according to such a coupling structure, even if the soldering is melted due to a high current flowing through the wire and the temperature is high, the wire is separated from the connector because the wire is coupled to the pair of coupling members. It is prevented.
According to another embodiment of the present invention, there is provided a method for connecting a connector and a wire of a battery pack, wherein the connector is connected to a battery cell or a protection circuit module, and the wire is connected to a pair of connecting members provided in the connector. By forming the soldering after bonding, or clamping the coupling member after bonding the wire, or forming the soldering after clamping the coupling member, the connector and wire bonding time is short, and the risk factor during the entire bonding time Since there is no such thing, work safety is improved.

1 is a circuit diagram illustrating a schematic circuit of a battery pack according to an embodiment of the present invention. 1 is a perspective view illustrating a schematic structure of a battery pack according to an embodiment of the present invention. FIG. 5 is a perspective view illustrating a schematic structure of a battery pack according to another embodiment of the present invention. FIG. 3 is a partial perspective view illustrating a connector and wire coupling structure of a battery pack according to an embodiment of the present invention. FIG. 6 is a partial perspective view showing a connector and wire connection structure of a battery pack according to another embodiment of the present invention. It is a top view which shows the coupling structure of the connector and wire by another embodiment of this invention. FIG. 6b is a cross-sectional view taken along line 6b-6b of FIG. 6a. FIG. 6c is a cross-sectional view taken along line 6c-6c of FIG. 6a. FIG. 6c is another cross-sectional view taken along line 6c-6c of FIG. 6a. FIG. 5 is a perspective view sequentially illustrating a wire coupling method using a battery pack connector according to another embodiment of the present invention. FIG. 5 is a perspective view sequentially illustrating a wire coupling method using a battery pack connector according to another embodiment of the present invention. FIG. 5 is a perspective view sequentially illustrating a wire coupling method using a battery pack connector according to another embodiment of the present invention. FIG. 5 is a perspective view sequentially illustrating a wire coupling method using a battery pack connector according to another embodiment of the present invention. FIG. 5 is a perspective view sequentially illustrating a wire coupling method using a battery pack connector according to another embodiment of the present invention. FIG. 5 is a perspective view sequentially illustrating a wire coupling method using a battery pack connector according to another embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art to which the present invention pertains can easily carry out the present invention.
FIG. 1 is a circuit diagram illustrating a schematic circuit of a battery pack according to an embodiment of the present invention. FIG. 2 is a perspective view illustrating a schematic structure of a battery pack according to an embodiment of the present invention.
As shown in FIGS. 1 and 2, a battery pack 100 according to an embodiment of the present invention includes a battery cell 110, connectors 120A, 120B, and 120C, a protection circuit module 130, and wires 141A and 141B.

  The battery cell 110 may be a rechargeable battery. For example, the battery cell 110 may be any one selected from a lithium ion battery, a lithium polymer battery, a lithium ion polymer battery, and an equivalent thereof, but the type thereof is not limited here. . Further, the battery cell 110 may be any one selected from a cylindrical type, a square type, a pouch type, and an equivalent thereof, but the form is not limited here.

  Connectors 120A, 120B, and 120C electrically connect battery cells 110 in series or in parallel. FIG. 1 and FIG. 2 show, as an example, a case where a plurality of battery cells 110 are connected by connectors 120A, 120B, and 120C in a 5-series 2-parallel configuration. It is not limited.

  The protection circuit module 130 is electrically connected to the battery cell 110 and controls charging and discharging of the battery cell 110. Here, the protection circuit module 130 includes a positive electrode pad 131 </ b> A and a negative electrode pad 131 </ b> B for electrically connecting to the battery cell 110. In such a protection circuit module 130, a plurality of electronic elements 133 (an integrated circuit, a transistor, a resistor, a capacitor, and the like) for controlling not to overcharge the battery cell 110 but also to prevent overcharging are mounted. Has been. The protection circuit module 130 may be provided with a connector 134 for connection with a charger (not shown) or a load (not shown).

  The wires 141A and 141B electrically connect the battery cell 110 and the protection circuit module 130. Here, the wires 141A and 141B are covered with insulating coatings 141a and 141b, respectively. Such wires include a positive electrode wire 141A and a negative electrode wire 141B. The positive electrode wire 141 </ b> A connects the connector 120 </ b> A connected to the positive electrode terminal 111 of the battery cell 110 having the highest potential among the battery cells 110 and the positive electrode pad 131 </ b> A of the protection circuit module 130. That is, one end of the positive electrode wire 141A is coupled, connected, connected or soldered to the connector 120A, and the other end is soldered to the positive electrode pad 131A. The negative electrode wire 141 </ b> B connects the connector 120 </ b> B connected to the negative electrode terminal 112 of the battery cell 110 having the lowest potential among the battery cells 110 and the negative electrode pad 131 </ b> B of the protection circuit module 130. That is, one end of the negative electrode wire 141B is coupled, connected, connected, or soldered to the connector 120B, and the other end is soldered to the negative electrode pad 131B.

  The connector 120 </ b> A connected to the positive electrode terminal 111 of the battery cell 110 having the highest potential among the battery cells 110 may have a two-layer structure including the first connecting member 121 and the second connecting member 122. That is, the first connecting member 121 is welded to the positive electrode terminal 111 of the battery cell 110, and the positive electrode wire 141 </ b> A is coupled, connected, connected, or soldered to the second connecting member 122. In addition, the connector 120B connected to the negative terminal 112 of the battery cell 110 having the lowest potential among the battery cells 110 has the same structure as the connector 120A, and a description thereof will be omitted.

On the other hand, the other connector 120C to which the positive electrode wire 141A or the negative electrode wire 141B is not bonded has a one-layer structure composed of one conductive layer. Of course, the connector 120 </ b> C made of one conductive layer is welded to the positive terminal 111 or the negative terminal 112 of the battery cell 110, thereby electrically connecting the plurality of battery cells 110 in series and in parallel.
The one-layer connector 120C and the two-layer connectors 120A and 120B may be any one selected from nickel, nickel-plated copper, and the like, where The material is not limited. Further, such connectors 120A, 120B, and 120C may be clad metals made of nickel and copper. Further, in some cases, only the second connecting member 122 of the two-layer connector 120A, 120B may be formed of a clad metal. As is well known, such a clad metal is formed by a method such as welding, rolling, casting or extruding which is not plated, and has a new property (eg, wettability with respect to soldering) which the base material does not have. improves.

  As described above, the connectors 120A, 120B, and 120C of the battery pack 100 according to the embodiment of the present invention, in particular, the connectors 120A and 120B to which the wires 141A and 141B are coupled, connected, connected, or soldered are not one-layer structures. Due to the two-layer structure, not only the coupling force between the battery cell 110 and the connectors 120A and 120B is improved, but also the coupling force between the wires 141A and 141B and the connectors 120A and 120B is improved. For example, the first connecting member 121 of the connector 120A is coupled to the battery cell 110 first, and then the wire 141A is coupled to the second connecting member 122. In other words, the step of connecting the first connecting member 121 to the battery cell 110 and the step of connecting the wire 141A to the second connecting member 122 do not affect each other.

  On the other hand, the connector 120B to which the wire 141B is coupled or soldered is located on the lower surface of the battery cell 110B (see FIG. 2). That is, the connector 120B is attached to the negative electrode on the lower surface of the battery cell 110B. Therefore, in FIG. 2, the connector 120B is substantially blocked by the battery cell 110B and cannot be seen from the outside. However, since such a connector 120B has the same structure and shape as the connector 120A, illustration thereof is omitted.

FIG. 3 is a perspective view illustrating a schematic structure of a battery pack according to another embodiment of the present invention.
As shown in FIG. 3, in the battery pack 101 according to another embodiment of the present invention, the connectors 220 </ b> A and 220 </ b> B may be coupled to the protection circuit module 130. That is, the connector 220A is connected to the positive electrode pad 131A of the protection circuit module 130, and the connector 220B is connected to the negative electrode pad 131B. Further, the positive electrode wire 141A is connected or soldered to the connector 220A, and the negative electrode wire 141B is connected or soldered to the connector 220B. Here, since the connectors 220A and 220B are substantially the same as the connectors 120A and 120B described above, detailed description of the connectors 220A and 220B will be omitted.
In this manner, in another embodiment of the present invention, since the connectors 220A and 220B are applied not only to the battery cell 110 but also to the protection circuit module 130, the coupling force between the wires 141A and 141B and the protection circuit module 130 is also increased. Further improve.

FIG. 4 is a partial perspective view illustrating a connection structure of a connector and a wire of a battery pack according to an embodiment of the present invention.
As shown in FIG. 4, the connector 120 </ b> A of the battery pack 100 according to the embodiment of the present invention includes a first connection member 121 welded to the battery cell 110 and a second connection member 121 formed on the first connection member 121. The connecting member 122, the bendable connecting region 123 for connecting the first connecting member 121 and the second connecting member 122, and a pair formed on the second connecting member 122 and protruding above the fixed length. And a pressure member 125 formed on the first connecting member 121 and pressurizing the second connecting member 122. Here, the connection region 123 and the pressure unit 125 are formed on opposite sides. Further, the pair of coupling members 124 have a shape in which the distance between them is substantially closer to the upper side.
Further, in such a connector 120A, the first connecting member 121 is welded to the positive terminal 111 of the battery cell 110, and the conductive wire 141A is connected to the pair of connecting members 124 provided in the second connecting member 122. May be. Further, the soldering 150 may be formed on the conductive wire 141A and the coupling member 124.

FIG. 5 is a partial perspective view showing a connector and wire connection structure of a battery pack according to another embodiment of the present invention.
As shown in FIG. 5, the connector 220 </ b> A of the battery pack 101 according to another embodiment of the present invention is formed on the first connecting member 121 welded to the protection circuit module 130 and the first connecting member 121. A pair of couplings formed on the second coupling member 122, the coupling region 123 coupling the first coupling member 121 and the second coupling member 122, and the second coupling member 122 and projecting a certain length upward. A member 124 and a pressurizing unit 125 that is formed on the first connecting member 121 and pressurizes the second connecting member 122 are included.

Further, in such a connector 220A, the first connecting member 121 is welded to the positive electrode pad 131A of the protection circuit module 130, and the conductive wire 141A is connected to the pair of connecting members 124 provided in the second connecting member 122. May be. Further, the soldering 150 may be formed on the conductive wire 141A and the coupling member 124.
Substantially, the connector 120A connected to the battery cell 110 and the connector 220A connected to the protection circuit module 130 may have the same structure. Therefore, the connector 120A, the connection structure between the connector 120A and the wire 141A, and the connection method between the connector 120A and the wire 141A described below are applicable to both of the above-described two embodiments.

6a is a plan view illustrating a connector and wire coupling structure according to an embodiment of the present invention, FIG. 6b is a cross-sectional view taken along line 6b-6b of FIG. 6a, and FIG. FIG. 6d is a cross-sectional view along line 6c-6c, and FIG. 6d is another cross-sectional view along line 6c-6c in FIG. 6a.
Referring to FIGS. 6a to 6c, a connector 120A according to an embodiment of the present invention includes a first connecting member 121 connected to a battery cell (110, see FIG. 4) or a protection circuit module (130, see FIG. 5). And a second connecting member 122 formed on the first connecting member 121, a connecting region 123 connecting the first connecting member 121 and the second connecting member 122, and the second connecting member 122. A pair of coupling members 124 that are formed and protrude upward by a certain length, and a pressurizing unit 125 that is formed on the first connecting member 121 and pressurizes the second connecting member 122 are included. Here, the first connecting member 121 may define a lower surface as a first surface and an upper surface as a second surface. The second connecting member 122 may define a lower surface as a first surface and an upper surface as a second surface. At this time, the upper surface (second surface) of the first connecting member 121 is in close contact with the lower surface (first surface) of the second connecting member 122.

  The first connecting member 121 includes a substantially flat main body 121a and a substantially flat extension portion 121b extending from both sides of the main body 121a facing each other. Furthermore, the main body 121a and the extension part 121b are respectively formed with concave grooves 121c and 121d, and a welding tool is positioned in the concave grooves 121c and 121d during the welding process. Therefore, the connector 120A is easily welded to the battery cell (110, see FIG. 4) or the protection circuit module (130, see FIG. 5). Further, an incision 121e is formed between the main body 121a and the extension 121b. Therefore, the heat by the welding tool is not diffused during the welding process and is concentrated in the concave grooves 121c and 121d, thereby further improving the welding efficiency. The first connecting member 121 may be formed of any one selected from nickel, nickel-plated copper, a clad metal composed of nickel and copper, and an equivalent thereof. The material is not limited. Furthermore, the 1st connection member 121 can define a right side edge part as a 1st side edge part, and a left side edge part as a 2nd side edge part.

  The second connecting member 122 is substantially flat and is formed on the first connecting member 121. The second connecting member 122 may be formed to be slightly smaller than the width of the main body 121a of the first connecting member 121. However, the second connecting member 122 is not limited to such a width. Absent. Further, a hole or opening 122a having a certain size is formed on both opposing sides of the second connecting member 122. That is, the holes 122a are formed on both sides of the second connecting member 122 facing the wire 141A. Through the hole 122a, the surface of the first connecting member 121 is exposed to the top. Such a hole 122a accommodates the solder formed excessively when the solder 150 is formed, thereby preventing the solder 150 from flowing out of the connector 120A. Like the first connecting member 121, the second connecting member 122 is selected from nickel, nickel-plated copper, a clad metal made of nickel and copper, and an equivalent thereof. Although it may be formed, the material is not limited here. Further, the second connecting member 122 may define the right side edge as the first side edge and the left side edge as the second side edge. Therefore, the first connecting member and the second connecting member have a shape in which the common first side edges are connected to each other and the second side edges are adjacent to each other.

  The connection region 123 connects one end of the first connection member 121 and the second connection member 122. The connection region 123 is substantially bent and may be formed of the same material as the first connection member 121 and the second connection member 122. Here, the connection region 123 is formed at the first side edge of the first and second connection members 121 and 122.

  The pair of coupling members 124 are formed so as to protrude upward from the second coupling member 122 by a certain length. Such a pair of coupling members 124 is formed by cutting a part of the second coupling member 122 and bending it upward. Of course, the hole 122a is formed in the 2nd connection member 122 by such incision. The pair of coupling members 124 are formed of substantially the same material as the second coupling member 122. In addition, the pair of coupling members 124 are formed on both sides facing the wire 141A. Further, the pair of coupling members 124 are close to each other upward. Therefore, the pair of coupling members 124 have a shape that substantially surrounds the wire 141A, whereby the wire 141A is strongly coupled, coupled, and connected to the connector 120A. Further, the pair of coupling members 124 may be clamped by a separate tool. That is, the upper ends of the pair of coupling members 124 may be clamped by being brought into close contact with each other with a tool such as a plier. Thereby, the coupling force between the pair of coupling members 124 and the wire 141A is further improved.

  The pressurizing unit 125 is bent upward from the first connecting member 121 and then bent in the horizontal direction to pressurize the end of the second connecting member 122. Such a pressure part 125 is formed on the opposite side facing the connection region 123. Furthermore, the pressurizing part 125 is formed at a position corresponding to the end of the wire 141A. Therefore, the bonding depth of the wire 141 </ b> A is limited by the pressurizing unit 125. Thereby, the coupling depth of the wire 141A to the connector 120A is controlled to be constant. Here, the pressurizing part 125 is formed on the second side edge of the first and second connecting members 121 and 122.

  On the other hand, the wire 141A is sandwiched between the pair of coupling members 124 to be coupled, connected and coupled. In addition, solder 150 may be further formed on the wire 141A and the pair of coupling members 124 so that the coupling force between the wire 141A and the connector 120A is increased. Further, the wire 141A may be sandwiched between the pair of coupling members 124 to be coupled, connected, and coupled, and the coupling member 124 may be additionally clamped. Furthermore, the soldering 150 may be formed on the wire 141A and the coupling member 124 after being clamped in this way.

  Such soldering 150 may substantially cover not only the wire 141 </ b> A and the pair of coupling members 124, but also partial areas of the first coupling member 121 and the second coupling member 122. Of course, a part of the soldering 150 that is used excessively is accommodated in the hole 122 a formed in the second connecting member 122. For this reason, the hole 122a is formed so that the width of the hole 122a is relatively larger than the width of the pair of coupling members 124. Therefore, a part of the excessively used soldering 150 is formed in the hole 122a. Can be easily accommodated. In this way, the wire 141A is not only coupled, connected and coupled to the pair of coupling members 124 formed on the connector 120A, but also surrounded by the soldering 150, so that the coupling force between the wire 141A and the connector 120A is obtained. Is further improved.

  Further, as shown in FIG. 6d, a concave groove 122b may be formed in the second connecting member 122 instead of the hole 122a. The excessively used part of the soldering 150 is also accommodated in the concave groove 122b, thereby preventing the excessively used soldering from flowing out of the connector 120A.

  In this manner, in one embodiment of the present invention, the wire 141A can be coupled, connected, or coupled to the pair of coupling members 124 included in the connector 120A. In another embodiment of the present invention, the pair of coupling members 124 may be clamped after the wire 141A is coupled, connected, or coupled to the pair of coupling members 124 included in the connector 120A. Further, in another embodiment of the present invention, the solder 141 may be formed on the wire 141A and the coupling member 124 after the wire 141A is coupled, connected, or coupled to the pair of coupling members 124 included in the connector 120A. Good. In another embodiment of the present invention, the wire 141A is coupled to, connected to, or coupled to the pair of coupling members 124 included in the connector 120A. After the pair of coupling members 124 are clamped, the wires 141A and the coupling member 124 are coupled. Soldering 150 may be formed on the substrate. Therefore, according to the embodiment of the present invention, the coupling force between the connector 120A and the wire 141A is further improved.

  Furthermore, according to an embodiment of the present invention, the wire 141A is coupled to the pair of coupling members 124 even when the soldering 150 is melted due to a large current flowing through the wire 141A to generate high heat. This prevents the wire 141A from being separated from the connector 120A.

7a to 7f are perspective views sequentially illustrating a wire coupling method using a battery pack connector according to another embodiment of the present invention.
The method for connecting the connector 120A and the wire 141A of the battery pack 100 according to another embodiment of the present invention includes preparing the connector 120A, bending the connector 120A, and electrically connecting the connector 120A to the battery cell and / or the protection circuit board. And connecting the wire 141A.
Another embodiment of the present invention may further include clamping the pair of coupling members 124 included in the connector 120A.
Another embodiment of the present invention may further include forming solder 150 on wire 141A. Here, the step of forming the soldering 150 may be performed after the bonding step of the wire 141A, or may be performed after the clamping step of the coupling member 124. This will be described sequentially.

As shown in FIG. 7a, in the step of preparing the connector 120A, a connector 120A having a first connecting member 121, a second connecting member 122, a connecting region 123, a pair of connecting members 124, and a pressure unit 125 is prepared. . Here, the first connecting member 121 and the second connecting member 122 have a substantially flat shape, and the connecting region 123 is connected to the first connecting member 121 and the second connecting member for easy bending. A round shape is formed in a concave shape along the boundary line of the member 122. Further, since the connection region 123 has not been bent yet, the pair of coupling members 124 are formed downward rather than upward. Furthermore, since the pressurization part 125 formed on the opposite side of the connection region 123 is not yet bent upward, it maintains a substantially flat state like the first connection member 121.
Grooves 121c and 121d for welding formed in the main body 121a and the extension 121b constituting the first connecting member 121, an incised part 121e for preventing heat diffusion during welding, and a second connecting member 122, respectively. Since the solder overflow overflow prevention hole 122a and the like formed in the above have already been described, description thereof will be omitted.

  As shown in FIG. 7b, in the step of bending the connector 120A, the second connecting member 122 is placed on the first connecting member 121 by bending the first connecting member 121 or the second connecting member 122. Position. The second connecting member 122 is positioned on the first connecting member 121 by bending the connecting region 123 that connects the first connecting member 121 and the second connecting member 122 substantially. . At this time, the pressurizing part 125 formed to protrude in the horizontal direction from the first connecting member 121 is also bent upward. That is, the pressurizing part 125 is bent into a substantially “C” shape. In other words, a gap is formed between the first connecting member 121 and the second connecting member 122 by bending the end of the pressure unit 125 so as to cover the end of the second connecting member 122. Do not be. As described above, such a pressure unit 125 not only brings the first connecting member 121 and the second connecting member 122 into close contact with each other but also serves to limit the coupling depth of the wire 141A described later. Further, the hole 122a formed in the second connecting member 122 is positioned on the first connecting member 121 by the bending step of the connector 120A. Therefore, a predetermined region of the first connecting member 121 corresponding to the hole 122a is exposed at the top.

  As shown in FIG. 7c, in the step of electrically connecting the connector 120A to the battery cell and / or the protection circuit board, the first connection member 121 of the connector 120A is connected to the battery cell 110 and / or the protection circuit board (not shown). ) Electrically. For example, the first connecting member 121 of the connector 120 </ b> A is positioned on the battery cell 110. More specifically, the main body 121 a and the extension 121 b of the first connecting member 121 are positioned on the battery cell 110. Next, the welding tool 240 is positioned in the concave grooves 121c and 121d provided in the main body 121a and the extension 121b, respectively. Energy from the welding tool 240 is transmitted to the concave grooves 121c and 121d and the battery cell 110, whereby the first connecting member 121 is welded to the battery cell 110 via the concave grooves 121c and 121d. Here, the incision portion 121e formed between the main body 121a and the extension portion 121b is configured such that heat generated by the welding tool 240 does not diffuse during the welding process and is concentrated in the concave grooves 121c and 121d, thereby improving the welding efficiency. Further improve.

As shown in FIG. 7d, in the step of coupling the wire 141A, the wire 141A is positioned and coupled in the space formed by the second coupling member 122 and the pair of coupling members 124. At this time, since the bonding depth of the wire 141A is limited by the pressure unit 125, the wire 141A having an appropriate length is coupled to the coupling member 124. Thereby, the wire 141A is electrically coupled, connected and coupled to the connector 120A.
In this manner, the method for connecting the connector 120A and the wire 141A according to an embodiment of the present invention may be terminated at the connection step of the wire 141A.
Further, the method for connecting the connector 120A and the wire 141A according to another embodiment of the present invention may be terminated after the step of forming the soldering is further performed after the step of connecting the wire 141A. That is, soldering is formed on the wire 141A and the pair of coupling members 124 surrounding the wire, so that the wire 141A can be more firmly coupled to the connector 120A. At this time, the soldering may be formed not only in the wire 141A and the coupling member 124 but also in a partial region of the first coupling member 121 and the second coupling member 122. At this time, the excessively used soldering is accommodated in the hole 122a formed in the second connecting member 122, so that the excessively used soldering is prevented from flowing out of the connector 120A.

As shown in FIG. 7e, in the step of clamping the coupling member 124, the coupling member 124 formed outside the wire 141A is clamped. For example, by using a tool 230 such as a plier to press the upper ends of the pair of coupling members 124 together, the upper ends of the pair of coupling members 124 are brought into closer contact with the wire 141A.
Here, the connecting method of the connector 120A and the wire 141A according to another embodiment of the present invention may be terminated immediately after the clamping step of the connecting member 124. That is, even if soldering is not formed, the wire 141A can be strongly coupled, connected, and coupled to the connector 120A by the coupling member 124.

As shown in FIG. 7f, in the step of forming the soldering 150 on the wire 141A, the soldering 150 is formed on the wire 141A and the pair of coupling members 124. At this time, the soldering 150 may be formed not only in the wire 141 </ b> A and the coupling member 124 but also in a partial region of the first coupling member 121 and the second coupling member 122. Of course, when the soldering 150 is formed, the excessively used soldering is accommodated in the hole 122a formed in the second connecting member 122, so that the excessively used soldering is outside the connector 120A. Is prevented from flowing out. Thereby, not only the wire 141A is coupled, connected and coupled to the coupling member 124, but also the soldering 150 has a shape substantially surrounding the wire 141A, so that the coupling strength between the wire 141A and the connector 120A is further improved.
As described above, according to the method for connecting the connector 120A and the wire 141A of the battery pack 100 according to the embodiment of the present invention, the wire 141A is primarily connected using the connecting member 124 provided in the connector 120A, and then soldered. By secondary bonding of the wire 141A at the attachment 150, the entire process time is shortened, and there is no risk factor during the entire process, so that the work safety is improved.

  What has been described above is merely an embodiment for carrying out the connector of the battery pack and the method of coupling the same according to the present invention, and the present invention is not limited to the above-described embodiment, and the following claims As long as it is claimed in the scope of the present invention, any person having ordinary knowledge in the field to which the present invention belongs without departing from the gist of the present invention has the technical spirit of the present invention to the extent that various modifications can be implemented. .

DESCRIPTION OF SYMBOLS 100 Battery pack 110 Battery cell 111 Positive electrode terminal 112 Negative electrode terminal 120A, 120B, 120C Connector 121 1st connection member 121a Main body 121b Extension part 121c Concave groove 122 2nd connection member 122a Hole 123 Connection area 124 Connection member 125 Pressure part 130 protection circuit module 131A positive electrode pad 131B negative electrode pad 133 electronic element 134 connector 141A, 141B wire 141a, 141b insulation coating 150 soldering

Claims (24)

A connector for electrically connecting a wire to at least one battery or protection circuit module;
The connector is
A first connection member having a first surface and a second surface, the first connection member being electrically connected to the at least one battery or the protection circuit module via the first surface;
A second coupling member having a first surface and a second surface coupled to the first coupling member;
Including
A first surface of the second connecting member is located proximate to a second surface of the first connecting member;
The connector, wherein the wire is electrically connected to the second connecting member.   At least one wire coupling member is connected to the at least one battery or protection circuit module via the second connection member and the first connection member so that the wire is electrically connected to the second connection member. The connector according to claim 1, wherein the connector is formed on a second surface of the member. The first connecting member is
The body,
At least one extension extending from the body and spaced apart from at least one terminal of the at least one battery or protection circuit module;
The connector according to claim 1, comprising:   The connector according to claim 3, wherein an incision is formed between the main body and the at least one extension.   The connector according to claim 3, wherein a welding groove is formed in the main body and the at least one extension. The first and second connecting members have first and second side edges,
The connector according to claim 1, wherein the first side edge portion of the first connection member is connected to the first side edge portion of the second connection member. The first side edge of the first connecting member is
The connector according to claim 6, wherein the connector is connected to a first side edge of the second connecting member through a connecting region integrally connected to the first and second connecting members.   The connector according to claim 7, wherein the connection region is a bendable region.   The connector according to claim 6, further comprising a pressing portion that engages with a second side edge portion of the first and second connecting members. The pressurizing part is
Integrally attached to the second side edge of the first connecting member;
The connector according to claim 9, wherein the connector is a C-shaped opening in which the second connecting member is located. The at least one wire coupling member comprises:
Including first and second wire coupling members defining a wire receiving space;
When the wire is located in the wire receiving space,
The said 1st and 2nd wire coupling member accommodates and maintains the said wire in the said wire accommodating space, It is made to electrically connect with the said 2nd connection member. The connector described. In order to additionally support the wire in the wire receiving space,
The connector according to claim 11, further comprising a soldering material positioned on the wires of the wire accommodating space and the first and second wire coupling members. On the second surface of the second connecting member,
The connector according to claim 12, wherein one or more concave grooves are formed in proximity to the first and second wire coupling members.   14. The connector according to claim 13, wherein the one or more concave grooves are openings extending from a second surface of the second connecting member to the first surface.   The connector according to claim 1, wherein the first and second connecting members are formed of different materials. A method of bonding a wire to at least one battery or protection circuit module comprising:
The first and second connecting members are electrically interconnected;
The second side of the second connecting member is positioned proximate to the second side of the first connecting member;
Positioning the second connecting member relative to the first connecting member;
Electrically connecting the first connecting member to the at least one battery or protection circuit module;
Electrically connecting the wire to the second connecting member;
A method for bonding wires, comprising: Electrically connecting the wire to the second connecting member;
17. The method of connecting wires according to claim 16, wherein the wires are mechanically connected to a mounting structure formed on the second surface of the second connecting member. The first connecting member is
18. The method of claim 17, wherein the wire is coupled to the at least one battery or protection circuit module before the wire is mechanically coupled to the mount structure. The first connecting member is
The method of claim 17, wherein the wire is mechanically coupled to the mounting structure and then coupled to the at least one battery or protection circuit module. In the step of positioning the second connecting member with respect to the first connecting member,
The second side of the second connecting member is positioned proximate to the second side of the first connecting member;
The wire coupling according to claim 16, wherein the second connecting member is bent with respect to the first connecting member in a connecting region connected to the first and second connecting members. Method.   The wire connecting method according to claim 16, wherein the second connecting member is fixed in proximity to the first connecting member. In the step of fixing the second connecting member close to the first connecting member,
The method of connecting wires according to claim 21, wherein an end portion of the second connecting member is positioned in a space that is justified by the fixing member of the first connecting member. Mechanically coupling the wire to the mounting structure;
18. The wire of claim 17, wherein the wire is positioned in the at least two coupling members defining the wire receiving area such that at least two coupling members receive the wire in the wire receiving area. Join method.   The wire bonding method according to claim 23, further comprising forming a soldering material on the wire and the two bonding members.

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