KR20180138478A - Method for manufacturing busbar and manufacturing busbar through the same - Google Patents

Abstract

According to one embodiment of the present invention, a manufacturing method of a bus-bar is provided, and has a frame comprising a sensing unit and a body unit connected to the sensing unit. The frame is inserted and fixed in an injection mold, and at a position where mechanical fatigue thereof is concentrated, a strengthening unit is formed in which strength is enhanced by a reinforcing filler injected into the injection mold.

Description

METHOD FOR MANUFACTURING BUSBAR AND MANUFACTURING BUSBAR THROUGH THE SAME,

The present invention relates to a method of manufacturing a bus bar and a bus bar produced thereby.

In general, a method of manufacturing a bus bar includes a method of separately manufacturing a body part and a sensing part, bonding them to each other, and a method of manufacturing them integrally. Among them, the manufacturing process for bonding the sensing part side and the body part separately by the method of welding or the like is additionally required. Further, the durability of the joint part is decreased, thereby increasing the manufacturing process and cost and decreasing the durability of the joint part. cause. On the other hand, in the method of manufacturing a bus bar integrally in order to solve such a problem, the joining process can be omitted and the breakage due to the durability deterioration on the joint portion may not occur. However, relaxation and contraction may occur due to the impact applied to the bus bar, which may lead to a short circuit between the sensing part and the body part.

Korean Patent Publication No. 10-2014-0146232 (Apr. 24, 2014)

In an embodiment of the present invention, in order to solve the problem caused by shorting of the connection part due to relaxation and contraction of the body part and the sensing connection part using the bus bar for the electric vehicle using the integrated bus bar of the body part and the sensing connection part, And sensing connection bus bars are manufactured, and then the bus bar body and the sensing connection portion are placed in the thickness of the injection molded product by primary or primary and secondary insert injection molding. Also, the sensing connection portion is injection- And to provide a method of manufacturing a bus bar that ensures durability of the bus bar.

In an embodiment of the present invention, a conventional bus bar for an electric vehicle uses an integrated bus bar of a body part and a sensing connection part to solve a problem caused by a short-circuit of a connection part due to relaxation and contraction of the body part and the sensing connection part, Sensing bus bar is manufactured, and then the bus bar body and the sensing connection part are placed in the extrusion molding thickness by primary or primary and secondary insert injection molding, and the sensing connection part is formed by injection molding, And it is an object of the present invention to provide a bus bar securing durability.

In an embodiment of the present invention, it is difficult to confirm the deterioration of price competitiveness due to a lot of manufacturing processes and the abnormality of bonding in a process of manufacturing a body part and a sensing connection part using different metals and bonding them through ultrasonic waves or a laser, In order to solve such a problem, a bus bar having a body part and a sensing connection part is manufactured, and the body part and the sensing connection part of the bus bar are positioned in the thickness of the injection molding by primary or primary and secondary insert injection molding And to provide a method of manufacturing a bus bar that ensures the durability of the bus bar by injection molding only the sensing connection portion.

In an embodiment of the present invention, it is difficult to confirm the deterioration of price competitiveness due to a lot of manufacturing processes and the abnormality of bonding in a process of manufacturing a body part and a sensing connection part using different metals and bonding them through ultrasonic waves or a laser, In order to solve such a problem, a bus bar having a body part and a sensing connection part is manufactured, and the body part and the sensing connection part of the bus bar are positioned in the thickness of the injection molding by primary or primary and secondary insert injection molding And to provide a bus bar that ensures the durability of the bus bar by injection molding only the sensing connection portion.

According to an embodiment of the present invention, there is provided a frame including a sensing part and a body part connected to the sensing part, wherein the frame is inserted and fixed in the injection molding metal mold, and the frame is provided with reinforcing fillers injected into the injection molding metal mold Wherein enhanced is formed such that at least one of the strength and the degree of insulation is improved at one or more of a position where the mechanical fatigue is concentrated and a position where the electrical conduction is possible .

Then, the insertion and fixation are performed by the projections in the injection molding die, and the projections can be introduced into the injection molding die by the supply pressure of the reinforcement injection.

Further, the reinforcing filler may be injected once into the injection mold to form the reinforcing portion in the frame.

Also, mechanical fatigue can occur in the direction in which the frame is repeatedly bent.

Mechanical fatigue can also occur at one or more of the body part and the sensing part.

The frame may further include a connection portion connecting the sensing portion and the body portion.

Mechanical fatigue can also occur at one or more of the body part, the sensing part and the connection part.

The reinforcement injection comprises a primary reinforcement injection and a secondary reinforcement injection which are sequentially injected and one side of the frame is reinforced through primary injection molding by injecting a primary reinforcement injection, The secondary reinforcement injection can be injected and reinforced through secondary injection molding.

And, mechanical fatigue can occur in the direction in which the frame is repeatedly bent.

Mechanical fatigue can also occur at one or more of the body part and the sensing part.

The frame may further include a connection unit connecting the sensing unit and the body unit.

Also, a mechanical fatigue may occur at one or more of the body, the sensing, and the connection.

The non-ferrous metal may be aluminum or the same.

Further, the frame may further include a connecting portion connecting the sensing portion and the body portion, and at least one of the primary injection molding and the secondary injection molding may be formed at the connection portion.

In addition, the frame may further include a connection portion connecting the sensing portion and the body portion, and the connection portion may be provided to have elasticity.

Further, the elasticity may be provided by a curved portion provided in the connection portion.

Further, the connection portion may be surface-treated with at least one of nickel, tin, gold, silver and zinc.

In addition, the body portion may include a through hole so as to enhance heat dissipation and low resistance.

The through hole may be a square or a circular hole.

Further, the frame can be brought into close contact with the upper mold by the projections formed in the injection molding die so that the insert position is fixed during the primary injection molding and the secondary injection molding.

The frame may also include an irregular portion that enhances adhesion of the primary reinforcement implant and the secondary reinforcement implant.

In addition, the irregular portion may include at least one of a hole, a spike, and a drawwing, and may be formed on at least one contact surface of the frame and the primary reinforcement injection or the secondary reinforcement injection.

Also, the primary reinforcement injection and the secondary reinforcement injection may be different materials.

Also, at least one of the primary reinforcement injection and the secondary reinforcement injection may comprise a resin.

Also, at least some of the portions to which the wire can be coupled to the body portion can be blocked during injection molding and secondary injection molding, respectively, of injection of the primary reinforcement injection and the secondary reinforcement injection.

The frame may also include a carrier for securing the frame to the injection mold during primary injection molding and secondary injection molding.

Further, the frame is manufactured with the frame and the guide connected, and the guide and the frame are connected by the notch, so that the frame and the guide can be separated based on the notch after the secondary injection molding.

Further, the sensing portion may be plated with one of gold, silver, nickel, tin and zinc.

Sensing unit; A body part connected to the sensing part; And an enhanced portion in which at least one of the strength and the degree of insulation of the body portion is enhanced, wherein the reinforcing portion is formed on one side of the body portion, and the reinforcing portion is formed of one or more materials.

The sensor unit may further include a connection unit connecting the sensing unit and the body unit.

Sensing unit; A connection part to which one end is coupled to the sensing part; A body coupled to the other side of the connection; And an enhancement formed at one side within the body portion and the connection, wherein at least one of the strength and the degree of insulation is enhanced at one or more of the connection portion and the body portion.

And, the reinforcement portion includes a primary steel product and a secondary steel product, and at least one of the primary steel product and the secondary steel product may be a resin.

A sensing part, a connection part to which one side is coupled to the sensing part, and a body part to be coupled to the other side of the connection part; And an enhancement enhancing one or more of strength and degree of insulation within the connection and body portions, wherein a plurality of body portions are provided and laminated to each other, and the reinforcing portion is formed by laminating the body portions on a part of the exposed surface A bus bar is provided.

An embodiment of the present invention can provide a bus bar capable of securing the thickness and tensile strength of the body and securing the elasticity of the sensing connection portion to prevent shorting of the connection portion due to relaxation and contraction.

An embodiment of the present invention can provide a bus bar manufacturing method capable of preventing the cost competitive power from being deteriorated because the manufacturing process is not separated.

1 is a flowchart showing a process of manufacturing a bus bar according to an embodiment of the present invention;
2 is a perspective view of a frame according to an embodiment of the present invention.
3 is a perspective view of a bus bar according to embodiments of the present invention.
FIG. 4 (a) is a perspective view of a frame according to another embodiment of the present invention, and FIG. 4 (b) is a perspective view of a protrusion formed on a mold according to an embodiment of the present invention.
5 is a view showing a shape of a bus bar according to another embodiment of the present invention
6 is a view showing a shape of a stacked bus bar according to another embodiment of the present invention
Figures 7 (a) - 7 (c) show injection of a reinforcement implant in accordance with embodiments of the present invention

Hereinafter, specific embodiments of the present invention will be described with reference to the drawings. However, this is merely an example and the present invention is not limited thereto.

In the following description, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. The following terms are defined in consideration of the functions of the present invention, and may be changed according to the intention or custom of the user, the operator, and the like. Therefore, the definition should be based on the contents throughout this specification.

The technical idea of the present invention is determined by the claims, and the following embodiments are merely a means for effectively explaining the technical idea of the present invention to a person having ordinary skill in the art to which the present invention belongs.

In the following, a method for strengthening the frame (10 in Fig. 2) and a bus bar (20 in Fig. 3) manufactured by the above method will be described later. Here, the strengthening may be for the purpose of enhancing the strength against an external impact to be applied to the frame (10 in Fig. 2) and for enhancing, maintaining and enhancing the insulation from the outside. For example, when the manufactured bus bar (20 in Fig. 3) is connected to the battery of the vehicle, the vehicle may be affected by vibrations occurring during traveling. At this time, the vibration and pressure transmitted from the surrounding structure may be influenced by the banding and the like. Here, it can be said that the strengthening process enhances the resistance against the banding. Thus, the weakest points due to bending can be formed into the reinforcement during manufacturing to enhance the strength from the bending, which is a cause of mechanical fatigue. 5), and the frame (10 in FIG. 2) may be positioned at one or more of the connecting portions (also shown in FIG. 5) 2 112), it may be formed in the connection portion (112 in Fig. 2). For example, the reinforcing portion may be formed in the connection portion which is relatively narrow from the banding to the weak portion. Of course, the connecting portion (112 of FIG. 2) may be structurally formed to have elasticity with respect to a point where the curving portion (113 of FIG. 2) is formed and the banding is applied.

In addition, as a purpose of adding, maintaining, or enhancing insulation from the outside, it can function as a coating. That is, by covering the exposed area from the outside, it is possible to prevent electrical accidents such as shorts which may be caused by inevitable contact with the peripheral structure. It is possible to prevent electrical accidents due to contact with moisture as well as the peripheral structures. Therefore, a material capable of suppressing the electrical conductivity can be injected into the release without injecting a reinforcement implant that can function as a conductor after curing at the time of injection. For example, reinforcement injections, including resin, can be injected into the furnace to add, maintain and enhance insulation.

Hereinafter, an embodiment in which the reinforcing injection process is performed a plurality of times to form the reinforcing portion, and an embodiment in which the reinforcing injection process is performed through one time will be described in detail. First and second injection molding will be described with reference to FIGS. 1 to 6, and a process of forming the reinforcing portion through the molding injection process once through FIG. 7 will be described. 7, the difference will be mainly described by comparison with the contents described with reference to Figs. 1 to 6.

FIG. 1 is a flowchart showing a process of manufacturing a bus bar (20 of FIG. 2) according to an embodiment of the present invention.

Referring to Fig. 1, a bus bar (20 in Fig. 2) is fabricated in the order of frame making S1, primary reinforcement injection S2, secondary reinforcement injection S3 and removal S4 . Specifically, the frame manufacturing S1 can manufacture the frame (10 in Fig. 2) including the sensing portion (110 in Fig. 2) and the body portion (120 in Fig. 2). A frame (10 of FIG. 2) manufactured by a method such as a press can be manufactured as a bus bar (20 of FIG. 3) while being coupled with reinforcement through injection. The frame (10 of FIG. 2) includes a curved portion 1113 and a sensing hole 111a in the sensing portion 110 of FIG. 2 and a curved portion 123 and a hollow hole 121a of the body 120 Shape. ≪ / RTI > That is, a shape serving as a base of the bus bar (20 in Fig. 3) can be provided. Here, the sensing part 110 and the body part 120 may be integrally formed and do not include a separate bonding process. Therefore, it is possible to prevent the durability from being lowered due to the coupling structure.

That is, the mechanical performance can be increased by being manufactured in one piece. Here, the mechanical performance may mean the ability to maintain the bonding force due to the bonding force and the vibration, and the ability to withstand the damage that may be caused by the external force. Such a performance has a higher resistance than a bus bar manufactured by the combination of two members with respect to, for example, vibration of a vehicle when a bus bar (20 in Fig. 3), which is an embodiment of the present invention, It can be advantageous. Of course, it is also possible to expect the improvement of the insulating property as described above. Since the effect that can be expected from such a reinforcement portion is optional, the reinforcement injection material can be determined as a metal material by giving priority to the rigidity rather than the insulating property by a person skilled in the art. Therefore, the material of the reinforcing injection material is optional, and the specific gravity of the insulating property and rigidity can be controlled by fusing a plurality of materials. Further, elasticity may be imparted to the reinforcing portion.

In addition, the frame manufactured in the frame manufacturing (S1) may be, for example, 5 mm. The 5 mm is not limited to 0.5 mm as an example of the thickness corresponding to 50% of the thickness of the bus bar manufactured without being reinforced through injection. Hereinafter, a process of manufacturing a bus bar will be described with reference to a frame manufactured to a thickness of 5 mm.

The frame (10 in Fig. 2) fabricated through the above-mentioned frame making (S1) can be strengthened in a portion with weak durability, that is, a portion where stress concentration may occur due to external force. For example, a reinforcement implant may be injected for the purpose of reinforcing the frame (10 of FIG. 2). Therefore, a frame (10 in Fig. 2) may be placed in the primary injection molding die and injection of the primary reinforcement injection (S2) may be performed to inject and inject the reinforcement injection. The primary reinforcement implant may be injected, for example, onto one side of the frame (10 in Figure 2). Here, one surface of the frame (10 in Fig. 2) may be the bottom surface of the frame (10 in Fig. 2) and may be a part or the entire surface of the bottom surface.

And then the mold can be relocated in order to carry out the injection (S3) of the secondary reinforcement injection thereafter. If the reinforcement material is injected into the bottom of the first reinforcement material injection (S2), only the upper mold may be repositioned and the second reinforcement material may be injected. In this case, a secondary reinforcement injection may be injected (S3) on the other side of the frame (10 in Fig. 2). Here, the other surface may be the upper surface of the frame (10 in Fig. 2), and may be a part or the whole of the upper surface.

However, the sensing unit (110 in FIG. 2) in the process of injecting the primary reinforcement injection S2 and the secondary reinforcement injection S3 may be electrically conductive and may be disconnected from injection of the reinforcement injection. Therefore, the sensing unit (110 in Fig. 2) can be exposed after manufacturing the bus bar (20 in Fig. 3). Here, the frame (10 in Fig. 2) may be made of a nonferrous metal, for example, aluminum or copper. And the reinforcing injections injected at the primary and secondary times may comprise at least a resin. Therefore, if the reinforcement implant is not blocked in the sensing portion 110 (FIG. 2), the reinforcement implant may be blocked because electrical conduction through the sensing portion 110 (FIG. 2) may not be possible. Furthermore, the sensing portion 110 of FIG. 2 may be plated with one of gold, silver, nickel, tin, and zinc.

On the other hand, the mold disposed for injecting the primary reinforcement injection and the secondary reinforcement injection can be injected (S2, S3) after the frame (10 of FIG. 2) is fixed in the mold, Fixing means may be formed to prevent the frame (10 in FIG. 2) from moving within the mold by the reinforcing injection being made.

The frame may be formed with one or more of holes, spikes, and drawwing, and may be formed on the contact surface where the primary reinforcement injection and secondary reinforcement injection and the frame (10 in Figure 2) are in contact with each other, Or more to increase the adhesion between the frame (10 in Fig. 2) and at least one of the primary reinforcement injection and the secondary reinforcement injection.

On the other hand, the injected reinforced injection can be adhered to the frame (10 in Fig. 2) to strengthen the low-durability portion of the frame (10 in Fig. 2). Such reinforcing injections may also be made for the purpose of increasing durability, but may also be done to form a heat dissipating surface. For example, when the reinforcing injection material is injected into one side of the body part 120, the reinforcing injection material may be exposed to the outside when the reinforcing injection material is placed in the mold so as to be injected only to a certain area. Since the exposed surface is exposed even after the manufacture of the bus bar 20 (FIG. 3), the heat generated during the current flow can be a surface to be dissipated. For example, the surface that can radiate heat is one surface of the body portion 120, and the wider the exposed surface area, the better the heat dissipation.

Next, in the step S4 of removing the mold, when a guide (330 in Fig. 4) is further formed in the frame (10 in Fig. 2) in the reinforcement injection (S2, S3) ). ≪ / RTI > Hereinafter, this will be described in detail with reference to FIG.

2 is a perspective view of a frame 10 according to an embodiment of the present invention.

Referring to FIG. 2, the frame 10 may include a sensing unit 110 and a body unit 120. Here, the sensing unit 110 may be formed with a sensing hole 111a for connection with a terminal, and may be connected to the body 120 through a connection part 112 according to a distance from the terminal. That is, the sensing part 110 is connected to one side of the connection part 112 and the other side of the connection part 112 is connected to the body part 120, so that the sensing part 110 and the body part 120 are electrically connected . In this embodiment, the curved portion 113 is formed on the connection portion 112 so that the frame 10 can be resiliently structured. As described above, when the vehicle is included in a part of the vehicle, vibration may be generated by the vehicle while driving, and the resistance may be increased. The curved portion 113 may also be formed on the body portion 120. The curved portion 123 of the body 120 may also be the same as described above.

The frame 10 may have a thickness of 0.5 mm as described above. This thickness can be made thicker by forming reinforcing portions (213a and 220a in Fig. 3), and therefore can be determined in consideration of the thickness of the reinforcing portion when the frame 10 is manufactured. That is, when the reinforcing portion (213a, 220a in FIG. 3) is not formed or only one side is formed, the thickness of the frame 10 may be determined to be 1 mm to 1.5 mm at the time of manufacture.

The body portion 120 may be formed with a valley portion 121 and a concave portion 122 by the curved portion 123. A hollow hole 121a may be formed in the valley portion 121, the concave portion 122, and a part of the curved portion 123. In the illustrated example, the hollow portion 121a is formed in the valley portion 121, but it can also be formed in the recess portion, and the effect such as heat dissipation and electric resistance can be expected through the hollow hole 121a.

In particular, with respect to heat dissipation, the exposed area of the air in the body 120 is increased by the curved portion 123, thereby further enhancing the heat radiation effect. Of course, this effect can also be applied to the curved portion 113 formed on the connection portion 112. [ In addition, if a surface exposed to the outside is formed even after the primary steel product (222a in FIG. 3) and the secondary steel product (223a in FIG. 3) are positioned in the frame 10, the heat can be radiated through the exposed surface.

3 (a) and 3 (b), a bus bar 20 manufactured by supplying reinforcement injections 222a and 223a to the frame 10 of FIG. 2, (10) may further include reinforcing portions (213a, 220a). By forming the reinforcing portions 213a and 220a, the bus bar 20 can be increased in thickness entirely or locally. The present example is an example in which reinforcement injections 222a and 223a are injected into the bend 213 and a part of the body 220 and the body 220 and the bend 213 are connected to the reinforcements 222a and 223a The current passing cross-sectional area is increased, so that the electrical resistance is reduced, so that the electrical conductivity and durability due to vibration can be improved.

Since the reinforcing portions 213a and 221a can be selectively formed by the primary injection molding and the secondary injection molding as described above, for example, the reinforcing injections 222a and 223a are supplied to the curved portion 213 The reinforcing portion 213a may be formed and the reinforcing portion 220a may be formed at one end of the body portion 120 which may be connected to a separate member. Since the formation of the reinforcing portions 213a and 220a can be selectively performed by the primary injection molding and the secondary injection molding, the reinforcing portion can be formed at any portion not described in this example.

On the other hand, the reinforcing portions 213a and 220a can be strengthened twice on the bottom surface and the top surface of the frame 10, respectively. The secondary steel product 223a is injected into the upper surface of the body part 120 and the frame 10 is inserted into the frame 10 when the primary steel product 222a is injected into the bottom surface of the body part 120 of the frame 10, ). ≪ / RTI > As described above, the thickness of the bus bar at this time may be 1 mm to 1.5 mm. Further, the primary steel cargo 222a and the secondary steel cargo 223a may be made of different materials, and at least one material may be a resin.

Fig. 4 is a view showing a part of the structure of the frame 30 and the mold 1 according to another embodiment of the present invention. Fig. 4 (a) is a perspective view of the frame 30 according to another embodiment of the present invention, Fig. 4 (b) are protrusions 2 formed in a mold according to an embodiment of the present invention.

Referring to FIG. 4 (a), the frame 30 may further include a guide 330 in the frame 10 described above. The guide 330 has a structure for fixing the frame 30 so that the frame 30 is not moved when the reinforcing injection material is supplied in the mold 1 during the primary injection molding and the secondary injection molding. The primary injection molding and the secondary injection It can be placed in the mold 1 at the time of molding. For example, the guide 330 can allow a part of the frame 30 located inside the mold 1 to be fixed without being moved.

The frame 30, which is integrally formed with the guide 330, may be connected by a notch 330a in the mold. After the secondary injection molding, the notch 330a can be separated from the frame 30 by a method such as cutting. That is, the notch 330a allows the frame 30 to be fixed without being moved in the mold 1, but when the secondary injection molding is completed, the connection area is formed small so that the guide 330 can be easily separated desirable.

In addition, a pinhole 331 may be formed in the guide 330 for fixing. The guide 331 may be fixed to fix the frame 30, and the pinhole 331 may be fixedly coupled with the pin formed on the mold. Therefore, two pinholes 331 can be formed. Of course, it is a structure for fixing, so it is only necessary to have a circular shape, and in the case of a rectangular hole such as a square, one or more holes may be formed.

4 (b), as another method for fixing the frame 10 in the mold 1, the protruding portion 2 is formed in the mold 1, and the groove corresponding to the protruding portion 2 is formed in the frame 10, As shown in FIG. The protruding portion 2 is a structure for pressing the frame 10 and can contact the surface of the frame 10 to support the frame 10 even if it is not formed to correspond to the groove. In one embodiment, the protruding portion 2 protrudes from the metal mold 1, and the metal mold 1 and the elastic body 3 may be interposed therebetween. That is, the projecting portion 2 can press the frame 10 against the elastic body 3 in the direction protruding from the mold 1 to fix the frame 10.

5A and 5B show bus bars 40, 50 and 60 according to other embodiments of the present invention. FIG. 5A shows a bus bar 40 in a " Figure 5 (c) shows a bus bar 60 in the form of a "2" character. This example is for the purpose of disclosing various examples in the form of the bus bars 40, 50 and 60.

Referring to FIG. 6, the bus bars 40, 50 and 60 are provided with sensing parts 410, 510 and 610 at both ends thereof, respectively. The sensing parts 410, 510 and 610 sandwich body parts 420 and 520 620 are positioned, the bending of the body portions 420, 520, 620 can be variously formed.

Further, the bus bars 20, 40, 50, and 60 manufactured through insert injection may be formed of a non-ferrous metal, for example, the non-ferrous metal may be aluminum or copper. The manufactured bus bars 20, 40, 50 and 60 are reinforced by reinforcement injections 222a and 223a so that the thicknesses of the body part 200 and the connecting part 100 are increased by the reinforcement parts 213a, 221a, respectively. The elasticity can be determined by this difference.

The bus bars 20, 40, 50 and 60, in which the reinforcement injections 222a and 223a have been subjected to the primary reinforcement injection S2 and the secondary reinforcement injection S3 into the frame 10, The sensing units 210, 410, 510, and 610 may be surface-treated with nickel or tin. In addition to the surface treatment, the sensing units 210, 410, 510, and 610 may be formed of a plating layer containing at least one of nickel, gold, copper, and tin.

The frames 10 and 30 are connected to the frame 1 in order to enhance the adhesion by the reinforcement injections 222a and 223a injected during the primary injection molding and the secondary injection molding, An irregular portion may be formed on the outer surface. The atypical porosity includes at least one of a hole, a spike, and a drawwing, including non-uniform, rough, protruding or concave-convex shapes. After the reinforcing injections 222a and 223a are injected into the irregular portion and cured, the coupling force between the frames 10 and 30 and the reinforcing injections 222a and 223a can be further increased.

In addition, the body parts 120 and 320, which can be heated by the current flow, are asymmetrically injected into one side and the other side of the reinforcements 222a and 223a during the secondary injection molding, May be formed only on one side of the body part (120, 320). Accordingly, the other side of the body portions 120 and 320 on which the reinforcing portion is not formed can be exposed to the outside, so that heat due to the heating can be advantageously dissipated.

Also, the reinforcing portion formed by the reinforcing injection may be located at a position other than the sensing portions 110, 210, 310, 410, 510 and 610. The thickened portion by the reinforcement can increase the cross-sectional area and outer surface area of the bus bars (20, 40, 50, 60) in the direction of current flow, thereby improving electrical conductivity and heat dissipation. The sensing units 110, 210, 310, 410, 510, and 610 may be plated with at least one or more of gold, silver, nickel, zinc, and tin, The conductivity can be further increased.

6 is a view showing the shape of the stacked bus bar 70 according to another embodiment of the present invention. 6 illustrates a case where two frames are stacked, but the present invention can be applied to the following description even when three or more frames are stacked.

Referring to FIG. 6, insert injection may be performed in a state in which a plurality of frames are stacked. For example, a plurality of frames may be laminated, and the body portions 421 and 421b and the connecting portions 412a and 412b of the frames may be laminated, and the laminated frame may be injection-molded into the mold.

Here, the primary and secondary steel products 222a and 223a injected at the time of injection molding can be respectively injected into the lower surface and the upper surface of the laminated frame. In the case of the present embodiment in which two frames are stacked, the primary cargo material 222a may be supplied to the lower body part 42 (421b), and the secondary cargo material may be supplied to the body part 42 (421a) As shown in FIG. Where the reinforcements 222a and 223a may be injected into some or all of the exposed areas of the stacked frame.

When the reinforcing materials 222a and 223a are injected into the part, they can be supplied to, for example, a flat part. The flat portion may include valleys 421a and 421b and recesses 422a except for the curved portions 423a, 413a and 413b. The reinforcing portions 222a and 223a may be injected at portions where the reinforcing materials 222a and 223a are injected for the purpose of enhancing durability as in the foregoing embodiments.

Further, the area into which the reinforcements 222a and 223a are injected may further include the side of the laminated frame. The reinforcing members 222a and 223a are injected and injected into the surfaces including the sides after stacking a plurality of frames, whereby the inter-frame coupling can be performed. In addition to the bonding by the reinforcements 222a and 223a, the bonding state including the laser welding between the frames can be maintained by the welding and the adhesive.

Also, when the frames are coupled to each other by the reinforcements 222a and 223a, the inflow of the reinforcements 222a and 223a between the frames can be interrupted. Therefore, when the laminated frame is inserted into the mold, the reinforcements 222a and 223a can be pressed against each other by a pressing means such as banding or the like so that they are not injected into the respective frames.

Although the above-described embodiments illustrate an example in which reinforcement injections are injected twice, first and second, to reinforce the frames 10 and 30, (10, 30).

Hereinafter, the present invention is not limited to the case where reinforcement injections are injected over a plurality of times (primary and secondary).

7A-7C illustrate injection of a reinforcement implant in accordance with embodiments of the present invention. Referring to FIGS. 7A-7C, 1 after the frames 10, 30 are mounted. Here, the frame 10 and the frame 30 are fixed to the mold 1 in such a manner that the frames 10 and 30 can maintain their positions in the mold 1 against the pressure generated when the reinforcement injection is injected through the frames 10 and 30 into the mold 1. [ .

For example, this can be done by one or more protrusions 2 formed in the mold 1. Specifically, the projecting portion 2 can be joined by the mold 1 and the elastic body 3. The projections 2 can receive elasticity from the elastic body 3 in the direction of supporting the frames 10 and 30 and can press and fix the frames 10 and 30 with a predetermined force.

7 (a), the reinforced injection is introduced into the cavity 4 in the mold 1, and the inflow of the reinforced injection is carried out by the frame 10, It may be provided up to a position adjacent to the protruding portion 2. The projections 2 may be in the form of fins or cylinders, so that the reinforcement injections can be provided up to the periphery of the projections 2. [ The protruding portion 2 can be drawn into the mold 1 when the protruding portion 2 is pressed by the pressurization of the reinforcing injection material as shown in Fig. 7 (b). The protruding portion 2 may be formed with an inclined surface at the pressing direction end for the pulling. The inclined surface may be formed at an angle parallel to or perpendicular to the injection direction D of the reinforcement injection, and may be formed in a direction in which the cross-sectional area decreases as the projecting portion 2 extends in the pressing direction. Therefore, the inclined surface is pressed by the reinforcing injection material so that the projecting portion 2 is drawn into the mold 1, and the frame 10, 30 can be maintained in position by the reinforcing injection material.

When the reinforcement material is injected by the above-described process and the reinforcement material is hardened, the reinforcement portions 213a and 221a may be formed at the position where the reinforcement material is injected into the frame. In this embodiment, the reinforcing injection material is injected into the upper and lower surfaces of the frames 10 and 30, but the cavity 4 is formed only on one side of the mold 1 according to the shape of the mold 1, Can be injected. Therefore, when the reinforcement portions 213a and 221a are formed on the upper and lower surfaces of the frames 10 and 30, By way of secondary and tertiary reinforcement injection, or through injection of a single reinforcement injection.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, . Therefore, the scope of the present invention should not be limited to the above-described embodiments, but should be determined by equivalents to the appended claims, as well as the appended claims.

1: Mold
2:
3: Elastomer
10, 30: frame
20, 40, 50, 60, 70: bus bar
42:
110, 210, 310, 410, 410a, 410b, 510, 610:
111, 211, 311, 411, 511, and 611:
111a, 211a, 311a, 411a, 511a, 611a:
112, 212, 312, 412a, 412b:
113, 123, 213, 423a, 413a, 413b:
120, 220, 320, 420, 520, 620:
121, 221, 321, 421a, 421b:
121a, 221a and 321a: hollow holes
122, 222, 322, 422a:
213a, 221a:
222a: Primary cargo
223a: Secondary cargo
330: Guide
330a:
331: Pinhole
412, 512, and 612:
S1: Bus bar frame manufacture
S2: Primary reinforcement injection
S3: Secondary reinforcement infusion
S4: Remove
D: Strengthening injection direction

Claims (33)

A frame including a sensing part and a body part connected to the sensing part,
The frame is inserted and fixed in the injection molding die,
The frame is provided with a reinforcing portion for enhancing the strength and / or the degree of insulation in at least one of a position where mechanical fatigue is concentrated by the reinforcing filler injected into the injection- wherein an enhanced film is formed.
The method according to claim 1,
The insertion and fixation is carried out by the protrusions in the injection-molding mold,
Wherein the projecting portion is drawn into the injection-molding metal mold by a supply pressure of the reinforcing injection material.
The method according to claim 1,
Wherein the reinforcing injection is once injected into the injection molding die to form the reinforcing portion in the frame.
The method of claim 3,
Wherein the mechanical fatigue occurs in a direction in which the frame is repeatedly bent.
The method of claim 4,
Wherein the mechanical fatigue occurs at one or more of the body portion and the sensing portion.
The method of claim 4,
Wherein the frame further comprises a connection portion connecting the sensing portion and the body portion.
The method of claim 6,
Wherein the mechanical fatigue occurs at one or more of the body portion, the sensing portion, and the connection portion.
The method according to claim 1,
Wherein the reinforcement implant comprises a primary reinforcement implant and a secondary reinforcement implant that are sequentially implanted,
Wherein one side of the frame is reinforced through a primary injection molding by injecting the primary reinforcement injection and the other side of the frame is reinforced through secondary injection molding by injecting the secondary reinforcement injection, ≪ / RTI >
The method of claim 8,
Wherein the machine fatigue occurs in a direction in which the frame is repeatedly bent.
The method of claim 9,
Wherein the mechanical fatigue occurs at one or more of the body portion and the sensing portion.
The method of claim 9,
Wherein the frame further comprises a connection portion connecting the sensing portion and the body portion.
The method of claim 11,
Wherein the mechanical fatigue occurs at one or more of the body portion, the sensing portion, and the connection portion.
The method of claim 8,
Wherein the frame is made of aluminum or copper alloy.
The method of claim 8,
Wherein the frame further includes a connection unit connecting the sensing unit and the body unit,
Wherein at least one of the primary injection molding and the secondary injection molding is performed on the connecting portion.
The method of claim 11,
Wherein the connecting portion is provided to have elasticity.
16. The method of claim 15,
Wherein the elasticity is provided by a curved portion provided in the connection portion.
The method of claim 11,
Wherein the connecting portion is surface-treated by at least one of nickel, tin, zinc, gold and silver.
The method of claim 8,
Wherein the body portion includes a through hole so as to enhance heat dissipation and low resistance.
The method of claim 8,
Wherein the frame is formed with a groove portion which can be fixed by a protrusion formed on an injection molding die so that an insert position is fixed at the time of the primary injection molding and the secondary injection molding.
The method of claim 8,
The frame includes:
And an irregular portion for enhancing adhesion between the primary reinforcement injection and the secondary reinforcement injection.
The method of claim 20,
The non-
Wherein the at least one of the at least one of the hole, the spike, and the drawwing includes at least one of a hole, a spike, and a drawwing.
The method of claim 8,
Wherein the primary reinforcement material and the secondary reinforcement material are different materials from each other.
The method according to claim 8 or 22,
Wherein at least one of the primary reinforcement injection and the secondary reinforcement injection comprises a resin.
The method of claim 8,
Wherein at least a portion of the body portion to which the wire can be coupled is configured such that injection of the primary reinforcement injection and the secondary reinforcement injection is interrupted during the primary injection molding and the secondary injection molding, Gt;
The method of claim 8,
Wherein the frame includes a carrier for securing the frame to the injection mold during the primary injection molding and the secondary injection molding.
The method of claim 8,
The frame is manufactured such that the frame and the guide are connected to each other,
Wherein the guide and the frame are connected by a notch portion so that the frame and the guide are separated from each other with reference to the notch portion after the secondary injection molding.
The method of claim 8,
Wherein the sensing portion is plated with one of gold, silver, nickel, tin and zinc.
Sensing unit;
A body coupled to the sensing unit; And
And an enhancement enhancing one or more of the strength and the degree of insulation of the body portion,
Wherein the reinforcing portion is formed on one side of the body portion, and the reinforcing portion is formed of one or more materials.
29. The method of claim 28,
Further comprising a connection portion connecting the sensing portion and the body portion.
Sensing unit;
A connection part to which one end is coupled to the sensing part;
A body coupled to the other side of the connection; And
And an enhanced portion formed at one side within the body portion and the connection portion, wherein at least one of the strength and the degree of insulation is enhanced at one or more of the connection portion and the body portion.
29. The method of claim 28 or 30,
Wherein the reinforcing portion includes a primary steel product and a secondary steel product, and one of the primary steel product and the secondary steel product is a resin.
A sensing unit, a connection unit having one side coupled to the sensing unit, and a body coupled to the other side of the connection unit; And
And an enhancement enhancing at least one of strength and insulation within the connection and the body,
Wherein a plurality of the body parts are stacked, and the reinforcing part is formed on a part of the exposed surface in a state where the body parts are stacked on each other.
33. The method of claim 32,
Wherein the reinforcing portion is formed on a plane provided on the body portion.

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