Case having pedestal portion

Abstract

To provide a case capable of preventing scattered spatters from adhering to components installed in the case when welding a first metal plate-like member and a second metal plate-like member in a state of being installed in the case.SOLUTION: A case in which at least a first metallic plate-shaped member and a second metallic plate-shaped member welded to the first metallic plate-shaped member are accommodated, an inner surface of the case having a pedestal portion, the pedestal portion includes a support portion that supports at least a partial region of a plate member overlapping portion in which the first metal plate member and the second metal plate member are overlapped with each other inside the case, and a space portion that is provided between the support portions and faces a welded portion formed in the plate member overlapping portion in a thickness direction of the plate member overlapping portion.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a case used in an electrical connection box or the like in a vehicle such as an automobile, and relates to a case having a base portion used when welding a first metal plate member and a second metal plate member within the case. [Background technology]

[0002] Automobiles use many electrical components, such as electrically powered electrical devices and sensors that perform various controls, etc. These electrical components are connected to the battery, which serves as the power supply source, via various electric wires such as power lines and signal lines.

[0003] Large currents may flow through electrical components such as electrical equipment that are connected to a battery, which serves as a power source, via various electric wires that act as power lines and signal lines. Bus bars, which are metal plate-like members, may be installed in areas where large currents flow.

[0004] When a busbar is mounted on an electrical component, the busbar may be electrically connected to a mating component, such as a terminal or another busbar, which is another metal plate-like member, in order to distribute a large current from one point to multiple other points.One method for electrically connecting the busbar to the mating component, such as a terminal or another busbar, is to form through holes in the busbar and the mating component, such as a metal plate-like member, and fasten the busbar to the mating component with bolts and nuts that pass through the through holes.

[0005] However, electrically connecting a busbar to a mating component using bolts and nuts has the problem of being a complicated process. Therefore, a busbar and a mating component may be electrically connected by joining them by laser welding. Patent Document 1 (Patent Document 1) has proposed an electrical component mounted by laser welding a busbar to a mating component, the electrical component including a case, an electronic component disposed in the case and having terminals, and a busbar disposed in the case and laser-welded to the terminals of the electronic component, the terminals of the electronic component overlapping the busbar, the case having a first clamping portion contacting one of the terminals of the electronic component and the busbar, and a second clamping portion contacting the other of the terminals of the electronic component and the busbar, and the relative positions of the terminals of the electronic component and the busbar are maintained by being clamped between the first clamping portion and the second clamping portion.

[0006] On the other hand, due to miniaturization of electrical components, there is a demand for laser welding of a bus bar and a mating component in a state where the bus bar and the mating component are placed in the case of the electrical component. However, when laser welding is performed on a bus bar and a mating component in a state where the bus bar and the mating component are placed in the case of the electrical component, there is a problem in that spatter scattered during the laser welding can adhere to the components placed inside the case, which can cause circuit shorts, poor electrical connections between the components, internal contamination, etc. [Prior art documents] [Patent documents]

[0007] [Patent Document 1] Japanese Patent Application Publication No. 2023-37134 Summary of the Invention [Problem to be solved by the invention]

[0008] In view of the above circumstances, the present invention aims to provide a case that can prevent scattered spatter from adhering to components installed inside the case when welding a first metal plate-shaped member and a second metal plate-shaped member while they are installed in the case. [Means for solving the problem]

[0009] The gist of the configuration of the present invention is as follows. [1] A case that accommodates at least a first metal plate member and a second metal plate member that is welded to the first metal plate member, the inner surface of the case has a base portion, The base portion is a support portion that supports, within the case, at least a partial area of ​​a plate member overlapping portion where the first metal plate member and the second metal plate member are overlapped; a space provided between the support portions and facing the weld formed at the plate-like member overlapping portion in a thickness direction of the plate-like member overlapping portion; A case having a base portion, comprising: [2] A case having a base portion according to [1], wherein the space is a recess recessed toward the inner surface of the case. [3] A case having a base portion according to [2], in which an adhesive substance is provided on the inner surface of the recess. [4] A case having a base portion according to [2] or [3], wherein the base portion further has a suction hole that communicates with the recess and has an opening inside the case. [5] A case having a base portion according to [1], wherein the space is a through hole penetrating a wall surface that partitions the case. [6] A case having a base portion according to [1], wherein the tip of the support portion has a step portion that is a step in the thickness direction of the overlapping portion of the plate-like members. [7] A case having a base portion as described in [1], wherein the tip of the support portion has a groove portion recessed in the thickness direction of the plate-like member overlapping portion. [8] A case having a base portion according to [1], wherein the case is made of resin. [9] A case having a base portion according to [8], wherein the base portion is made of resin and is integrally molded with the case.

[10] A case having a base portion according to [1], wherein the case is a housing for an electrical junction box mounted on a battery pack.

[11] A case having a base portion according to [1], wherein at least one of the first metal plate member and the second metal plate member is a bus bar.

[12] A case having a base portion according to [1], wherein the welding is laser welding. [Effects of the Invention]

[0010] According to an embodiment of the case having a pedestal of the present invention, the inner surface of the case has a pedestal, which includes a support portion that supports at least a partial region of the overlapping portion of the plate-shaped members, where the first metal plate member and the second metal plate member are overlapped, inside the case, and a space provided between the support portions and facing the welds, such as laser welds, formed in the overlapping portion of the plate-shaped members in the thickness direction of the overlapping portion of the plate-shaped members. Therefore, when performing welding, such as laser welding, with the first metal plate member and the second metal plate member installed in the case, spatter scattered from the overlapping portion of the plate-shaped members that is not on the welding side, such as the laser light irradiation side, among the welds, such as laser welds, that penetrate the overlapping portion of the plate-shaped members is collected in the space. Therefore, when performing welding, such as laser welding, with the first metal plate member and the second metal plate member installed in the case, scattered spatter can be prevented from adhering to components installed in the case.

[0011] In addition, since there is a space of a predetermined size on the welding side, such as the side irradiated with laser light, spatter scattered from the overlapping portion of the plate-shaped members on the welding side, such as the side irradiated with laser light, has conventionally been sucked up using a suction means, so that spatter scattered from the overlapping portion of the plate-shaped members on the welding side, such as the side irradiated with laser light, can be prevented from adhering to parts installed in the case using conventional technology.

[0012] According to an embodiment of the case having a base portion of the present invention, the space portion is a recess recessed toward the inner surface of the case, so that spatter scattered from the overlapping portion of the plate-shaped members that is not the welding side, such as the side irradiated with laser light, is collected and trapped in the recess.Therefore, when welding such as laser welding is performed with the first metal plate-shaped member and the second metal plate-shaped member placed in the case, scattered spatter can be more reliably prevented from adhering to parts placed in the case.

[0013] According to an embodiment of the case having a base portion of the present invention, an adhesive substance is provided on the inner surface of the recess, so that spatter collected and trapped in the recess is captured by the adhesive substance.Therefore, when welding such as laser welding is performed with the first metal plate-shaped member and the second metal plate-shaped member placed in the case, scattered spatter can be more reliably prevented from adhering to components placed in the case.

[0014] According to an embodiment of the case having a base portion of the present invention, the base portion further has a suction hole that communicates with the recess and has an opening inside the case, so that spatter collected in the recess can be sucked from the welding side inside the case through the opening of the suction hole.Therefore, when welding such as laser welding is performed with the first metal plate-shaped member and the second metal plate-shaped member placed in the case, scattered spatter can be more reliably prevented from adhering to parts placed inside the case.

[0015] In an embodiment of the case having a base according to the present invention, the space is a through hole that penetrates the wall that divides the case, so that when welding, such as laser welding, is performed with the first metal plate member and the second metal plate member placed in the case, spatter scattered from the overlapping portion of the plate members that is not on the welding side can be sucked in from outside the case through the through hole, thereby more reliably preventing spatter scattered from the overlapping portion of the plate members that is not on the welding side from adhering to components placed inside the case.

[0016] According to an embodiment of the case having a base of the present invention, the tip of the support portion has a stepped portion that is a step in the thickness direction of the overlapping portion of the plate-shaped members. By placing the overlapping portion of the plate-shaped members on the stepped portion, the overlapping portion of the plate-shaped members can be reliably positioned in a predetermined position. Furthermore, when welding, such as laser welding, is performed on the first metal plate member and the second metal plate member with the case installed, spatter scattered from the overlapping portion of the plate-shaped members that is not on the welding side in the planar direction of the overlapping portion of the plate-shaped members can be more reliably prevented from leaking outside the base. Therefore, according to this embodiment of the case of the present invention, the positioning accuracy of the overlapping portion of the plate-shaped members can be improved while more reliably preventing spatter scattered from the overlapping portion of the plate-shaped members that is not on the welding side from adhering to components installed in the case.

[0017] According to an aspect of the case having a base portion of the present invention, the tip of the support portion has a groove recessed in the thickness direction of the overlapping portion of the plate-shaped members, thereby reducing the contact area between the tip of the support portion and the overlapping portion of the plate-shaped members, thereby preventing the support portion from melting due to heat conducted to the support portion during welding. Furthermore, according to an aspect of the case of the present invention, the groove more reliably prevents spatter scattered from the overlapping portion of the plate-shaped members not on the welding side in the planar direction of the overlapping portion of the plate-shaped members from being captured in the groove and leaking outside the base portion. Therefore, according to an aspect of the case of the present invention, the overlapping portion of the plate-shaped members is prevented from adhering to the tip of the support portion due to heat during welding, while more reliably preventing spatter scattered from the overlapping portion of the plate-shaped members not on the welding side from adhering to components installed in the case. [Brief explanation of the drawings]

[0018] [Figure 1] 1 is a partial side cross-sectional view of a case having a base according to a first embodiment of the present invention. [Figure 2] FIG. 10 is a partial side cross-sectional view of a case having a base according to a second embodiment of the present invention. [Figure 3]FIG. 10 is a partial side cross-sectional view of a case having a base according to a third embodiment of the present invention. [Figure 4] FIG. 10 is a partial side cross-sectional view of a case having a base according to a fourth embodiment of the present invention. [Figure 5] FIG. 10 is a partial side cross-sectional view of a case having a base according to a fifth embodiment of the present invention. [Figure 6] FIG. 10 is a partial side cross-sectional view of a case having a base according to a sixth embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0019] A case having a base according to a first embodiment of the present invention will be described below with reference to the drawings. Fig. 1 is a partial side cross-sectional view of the case having a base according to the first embodiment of the present invention. Fig. 1 is also a partial side cross-sectional view of the case in the length direction D of a first metal plate member 100 and a second metal plate member 200, which will be described later.

[0020] 1, a case 1 having a base portion 11 according to a first embodiment of the present invention accommodates at least a first metal plate member 100 and a second metal plate member 200 that is laser welded to the first metal plate member 100 by laser light L. The first metal plate member 100 and the second metal plate member 200 are laser welded while they are placed in the case 1. In other words, the first metal plate member 100 and the second metal plate member 200 are not accommodated in the case 1 after being laser welded.

[0021] The first metal plate member 100 and the second metal plate member 200 are members having a length direction D, a width direction W, and a thickness direction T. In FIG. 1 , the width direction W is perpendicular to the plane of the paper. The first metal plate member 100 and the second metal plate member 200 form a plate member overlapping portion 300 in which a partial region of the first metal plate member 100 and a partial region of the second metal plate member 200 are overlapped in the thickness direction T. In the case 1 according to the first embodiment, one end portion 101 of the first metal plate member 100 and one end portion 201 of the second metal plate member 200 are overlapped to form the plate member overlapping portion 300.

[0022] With the first metal plate member 100 and the second metal plate member 200 placed in the case 1, laser light L is irradiated onto the plate member overlapping portion 300, thereby forming a laser welded portion 301 in the plate member overlapping portion 300 and laser welding the first metal plate member 100 and the second metal plate member 200 together. In the case 1 according to the first embodiment, laser light L is irradiated from the second metal plate member 200 side of the plate member overlapping portion 300, thereby forming the laser welded portion 301 in the plate member overlapping portion 300. The laser welded portion 301 is formed by penetrating the plate member overlapping portion 300.

[0023] 1, the case 1 has a base portion 11 on an inner surface 10 of a wall surface 19 that defines a compartment of the case 1. The base portion 11 is a portion on which the plate-like member overlapping portion 300 is placed, and protrudes from the inner surface 10 of the case 1 toward the inside of the case 1.

[0024] The base portion 11 includes a support portion 20 that supports a plate-shaped member overlapping portion 300, in which a first metal plate-shaped member 100 and a second metal plate-shaped member 200 are overlapped, inside the case 1, and a space portion 30 that is provided between the support portions 20 and faces a laser welded portion 301 formed in the plate-shaped member overlapping portion 300 in the thickness direction T of the plate-shaped member overlapping portion 300.

[0025] The support portion 20 is a protrusion that protrudes from the inner surface 10 of the case 1 toward the inside of the case 1. The plate-like member overlapping portion 300 is placed on the tip portion 21 of the support portion 20, whereby the plate-like member overlapping portion 300 is supported inside the case 1. On the base portion 11, the tip portion 21 of the support portion 20 forms a substantially flat surface.

[0026] The shape of the support part 20 as viewed from the plate-like member overlapping part 300 side is not particularly limited, and examples thereof include a circle, an ellipse, a polygon, etc. Therefore, the support part 20 is a peripheral wall part that protrudes from the inner surface 10 of the case 1 toward the inside of the case 1 and has a shape such as a circle, an ellipse, a polygon, etc. Furthermore, the shape of the support part 20 as viewed from the plate-like member overlapping part 300 side corresponds to, for example, the shape of the plate-like member overlapping part 300 in the planar direction. Furthermore, the size of the support part 20 as viewed from the plate-like member overlapping part 300 side corresponds to, for example, the size of the plate-like member overlapping part 300 in the planar direction.

[0027] The space 30 is an internal space of the support part 20, which serves as a peripheral wall part. Therefore, when the shape of the support part 20 seen from the plate-like member overlapping part 300 side corresponds to the shape of the plate-like member overlapping part 300 in the planar direction, the shape of the space 30 seen from the plate-like member overlapping part 300 side corresponds to the shape of the plate-like member overlapping part 300 in the planar direction.

[0028] The space 30, which is the internal space of the support part 20, has an opening part 31 that opens toward the inside of the case 1. The opening part 31 is a part defined by the tip part 21 of the support part 20.

[0029] 1, when the plate-shaped member overlapping portion 300 is placed on the tip portion 21 of the support portion 20, the space portion 30 is positioned opposite the plate-shaped member overlapping portion 300 in the thickness direction T of the plate-shaped member overlapping portion 300. Furthermore, since the space portion 30 is positioned opposite the plate-shaped member overlapping portion 300 in the thickness direction T of the plate-shaped member overlapping portion 300, when the first metal plate-shaped member 100 and the second metal plate-shaped member 200 are laser-welded while placed in the case 1, the space portion 30 is positioned opposite the laser welded portion 301 in the thickness direction T of the plate-shaped member overlapping portion 300.

[0030] In the base portion 11, the space portion 30 is a recessed portion recessed toward the inner surface 10 of the case 1. Therefore, when the plate-like member overlapping portion 300 is placed on the tip portion 21 of the support portion 20, the opening portion 31 is closed and the space portion 30 becomes a closed space.

[0031] Furthermore, when laser welding the first metal plate member 100 and the second metal plate member 200 at the plate member overlapping portion 300, spatter S scatters from the exposed surface of the second metal plate member 200 located on the side irradiated with the laser light L, and spatter S also scatters from the exposed surface of the first metal plate member 100 located on the opposite side to the side irradiated with the laser light L, i.e., not on the side irradiated with the laser light L. However, the spatter S scattering from the first metal plate member 100 will scatter into the space portion 30, which is a closed space.

[0032] An example of the material for the case 1 is resin. An example of the material for the base 11 is resin. An example of the embodiment of the base 11 is that it is integrally molded with the case 1. An example of the material for the first metal plate member 100 and the second metal plate member 200 is copper, iron, aluminum, etc.

[0033] Moreover, the case 1 may be, for example, a housing for an electrical connection box housed in a battery pack mounted on an electric vehicle or the like.

[0034] Examples of the first metal plate member 100 include a bus bar, a terminal, etc., and examples of the second metal plate member 200 include a bus bar, a terminal, etc. In another example, at least one of the first metal plate member 100 and the second metal plate member 200 is a bus bar.

[0035] In the case 1, the inner surface 10 of the case 1 has a base portion 11, and the base portion 11 has a support portion 20 that supports at least a portion of the plate-shaped member overlapping portion 300 inside the case 1, and a space portion 30 that is provided between the support portions 20 and faces the laser welded portion 301 formed in the plate-shaped member overlapping portion 300 in the thickness direction T of the plate-shaped member overlapping portion 300.Therefore, when the first metal plate-shaped member 100 and the second metal plate-shaped member 200 are laser welded while placed in the case 1, spatter S scattered from the first metal plate-shaped member 100 that is not irradiated with the laser light L is collected in the space portion 30, which is a closed space. Therefore, in case 1, when laser welding is performed on the first metal plate-shaped member 100 and the second metal plate-shaped member 200 while they are placed in case 1, spatter S scattered from the first metal plate-shaped member 100 that is not irradiated with the laser light L can be prevented from adhering to components placed in case 1.

[0036] Since there is a space of a predetermined size on the irradiation side of the laser light L, suction means has conventionally been provided to suck up the spatter S scattered from the second metal plate member 200 on the irradiation side of the laser light L. Therefore, the spatter S scattered from the second metal plate member 200 on the irradiation side of the laser light L can be prevented from adhering to components installed in the case 1 using conventional technology.

[0037] Furthermore, in the case 1, the space 30 of the base 11 is a recess recessed toward the inner surface 10 of the case 1, so that spatter S scattered from the first metal plate member 100 that is not on the side irradiated with the laser light L is collected and trapped in the recess. Therefore, when the first metal plate member 100 and the second metal plate member 200 are laser welded while placed in the case 1, it is possible to more reliably prevent the spatter S scattered from the first metal plate member 100 from adhering to components placed in the case 1.

[0038] Next, a case having a pedestal according to a second embodiment of the present invention will be described with reference to the drawings. The case having a pedestal according to the second embodiment shares major components with the case having a pedestal according to the first embodiment, and therefore the same components as those in the case having a pedestal according to the first embodiment will be described using the same reference numerals. FIG. 2 is a partial side cross-sectional view of the case having a pedestal according to the second embodiment of the present invention. FIG. 2 is also a partial side cross-sectional view of the case in the longitudinal direction D of the first metal plate member 100 and the second metal plate member 200.

[0039] 2, in the case 2 having the base portion 12 according to the second embodiment, an adhesive substance 32 is further provided on the inner surface of the recessed portion which is the space portion 30. In the case 2, the adhesive substance 32 is applied to the entire inner surface of the space portion 30.

[0040] Examples of the adhesive substance 32 include double-sided tape using an adhesive such as acrylic, fluorine-based, silicone-based, or urethane-based paste, gel, and the like.

[0041] In case 2, an adhesive substance 32 is provided on the inner surface of the recess, which is the space portion 30, so that spatter S collected and trapped in the recess is captured by the adhesive substance 32.Therefore, when the first metal plate-shaped member 100 and the second metal plate-shaped member 200 are laser welded while placed in case 2, spatter S scattered from the first metal plate-shaped member 100 in the plate-shaped member overlapping portion 300 can be more reliably prevented from adhering to parts placed in case 2.

[0042] Next, a case with a pedestal according to a third embodiment of the present invention will be described with reference to the drawings. The case with a pedestal according to the third embodiment shares major components with the cases with pedestals according to the first and second embodiments, and therefore the same components as those in the cases with pedestals according to the first and second embodiments will be described using the same reference numerals. FIG. 3 is a partial side cross-sectional view of the case with a pedestal according to the third embodiment of the present invention. FIG. 3 is also a partial side cross-sectional view of the case in the width direction W of the first metal plate member 100 and the second metal plate member 200.

[0043] In the case 1 according to the first embodiment, the space 30 of the base portion 11 is a recess recessed toward the inner surface 10 of the case 1, and in the case 2 according to the second embodiment, the space 30 of the base portion 12 is a recess recessed toward the inner surface 10 of the case 2, and the plate-like member overlapping portion 300 is placed on the tip portion 21 of the support portion 20, thereby making the space 30 a closed space. However, instead of this, as shown in FIG. 3, in the case 3 having the base portion 13 according to the third embodiment, the base portion 13 further has a suction hole 33 that communicates with the recess that is the space 30 and has an opening 34 inside the case 3.

[0044] Opening 34 of suction hole 33 opens toward the inside of case 3, similar to opening portion 31 of space 30. Suction hole 33 is adjacent to space 30 via support portion 20 of base 13. In case 3, opening 34 of suction hole 33 is located on approximately the same plane as opening portion 31 of space 30. In addition, in base 13, the bottom of suction hole 33 is continuous with the bottom of space 30.

[0045] 3, in case 3, even when plate-like member overlapping portion 300 is placed on tip end 21 of support portion 20, opening 34 of suction hole 33 is not blocked. Therefore, in case 3, even when opening portion 31 of space portion 30 is blocked by placing plate-like member overlapping portion 300 on tip end 21 of support portion 20, space portion 30 does not become a blocked space, and space portion 30 remains in communication with the inside of case 3 via suction hole 33.

[0046] Furthermore, since the opening 34 of the suction hole 33 opens toward the inside of the case 3, a space of a predetermined size exists on the opening 34 side of the suction hole 33. From the above, a suction means can be installed near the opening 34 of the suction hole 33.

[0047] In the case 3, the base portion 13 further has a suction hole 33 having an opening 34 inside the case 3, so that by installing a suction means near the opening 34 of the suction hole 33 during laser welding, spatter S collected in the recess that is the space portion 30 can be sucked through the opening 34 of the suction hole 33 from the irradiation side of the laser light L inside the case 3. Therefore, when laser welding the first metal plate-shaped member 100 and the second metal plate-shaped member 200 while they are placed in the case 3, it is possible to more reliably prevent spatter S scattered from the first metal plate-shaped member 100 in the plate-shaped member overlapping portion 300 from adhering to components placed in the case 3.

[0048] Next, a case having a pedestal according to a fourth embodiment of the present invention will be described with reference to the drawings. The case having a pedestal according to the fourth embodiment shares major components with the cases having pedestals according to the first to third embodiments, and therefore the same components as those in the cases having pedestals according to the first to third embodiments will be described using the same reference numerals. FIG. 4 is a partial side cross-sectional view of the case having a pedestal according to the fourth embodiment of the present invention. FIG. 4 is also a partial side cross-sectional view of the case in the width direction W of the first metal plate member 100 and the second metal plate member 200.

[0049] In cases 1, 2, and 3 according to the first to third embodiment examples, the space 30 of the base portions 11, 12, and 13, respectively, was a recess. However, instead, as shown in FIG. 4, in case 4 having base portion 14 according to the fourth embodiment example, the space 30 is a through hole 35 that penetrates the wall surface 19 that defines case 4.

[0050] Because the through-hole 35 has an opening 36, the space 30 penetrates the wall surface 19 that defines the case 4. One side of the through-hole 35 is an opening portion 31 that opens toward the inside of the case 4, and the other side is an opening portion 36 that opens toward the outside of the case 4. In the case 4, the space 30 communicates with the environment outside the case 4 via the opening portion 36.

[0051] In case 4, even when the plate-like member overlapping portion 300 is placed on the tip portion 21 of the support portion 20, the opening 36 of the through hole 35 is not blocked. Therefore, in case 4, even when the opening portion 31 of the space portion 30 is blocked by placing the plate-like member overlapping portion 300 on the tip portion 21 of the support portion 20, the space portion 30 does not become a blocked space, and the space portion 30 remains in communication with the outside of case 4 via the opening 36.

[0052] Furthermore, since the opening 36 of the through hole 35 is open toward the outside of the case 4, a space of a predetermined size exists on the opening 36 side of the through hole 35. For the above reasons, a suction means can be installed near the opening 36 of the through hole 35.

[0053] In the case 4, the space 30 is a through hole 35 having an opening 36 that opens toward the outside of the case 4. Therefore, by installing a suction means near the opening 36 of the through hole 35 during laser welding, spatter S collected in the space 30 can be sucked from the outside of the case 4 through the opening 36 of the through hole 35. Therefore, when laser welding the first metal plate member 100 and the second metal plate member 200 while they are placed in the case 4, spatter S scattered from the first metal plate member 100 in the plate member overlapping portion 300 can be sucked from outside the case 4, which more reliably prevents spatter S scattered from the first metal plate member 100 from adhering to components placed in the case 4. Note that in the case 4, the first metal plate member 100 is exposed to the outside of the case 4 through the through hole 35. Therefore, after the spatter S is sucked through the opening 36, the opening 36 may be closed with a lid member. This prevents contact with the first metal plate member 100 from the outside of the case 4 when electricity is applied, which can cause a short circuit.

[0054] Next, a case with a pedestal according to a fifth embodiment of the present invention will be described with reference to the drawings. The case with a pedestal according to the fifth embodiment shares major components with the cases with pedestals according to the first to fourth embodiments, and therefore the same components as those in the cases with pedestals according to the first to fourth embodiments will be described using the same reference numerals. FIG. 5 is a partial side cross-sectional view of the case with a pedestal according to the fifth embodiment of the present invention. FIG. 5 is also a partial side cross-sectional view of the case in the width direction W of the first metal plate member 100 and the second metal plate member 200.

[0055] In cases 1, 2, 3, and 4 according to the first to fourth embodiment examples, the tip portion 21 of the support portion 20 of the base portion 11, 12, 13, and 14, respectively, was an approximately flat surface. However, instead, as shown in FIG. 5, in case 5 having the base portion 15 according to the fifth embodiment example, the tip portion 21 of the support portion 20 has a step portion 22 which is a step in the thickness direction T of the plate-like member overlapping portion 300.

[0056] In the case 5, the space 30 of the base 15 may be a recess recessed toward the inner surface 10 of the case 5, or may be a through-hole penetrating the wall surface 19 that defines the case 5. For ease of explanation, in FIG. 5, the space 30 is shown as a recess recessed toward the inner surface 10 of the case 5. By placing the plate-like member overlapping portion 300 on the step portion 22 of the support portion 20, the plate-like member overlapping portion 300 can be reliably positioned at a predetermined position on the support portion 20.

[0057] Furthermore, when the first metal plate-shaped member 100 and the second metal plate-shaped member 200 are laser-welded while placed in the case 5, spatter S that has scattered in the planar direction of the plate-shaped member overlapping portion 300 from the plate-shaped member overlapping portion 300 that is not on the side irradiated with the laser light L is captured by the step portion 22. Therefore, by providing the step portion 22 to the support portion 20 of the base portion 15, it is possible to more reliably prevent the spatter S that has scattered in the planar direction of the plate-shaped member overlapping portion 300 from leaking out of the base portion 15.

[0058] From the above, in case 5, the positioning accuracy of the plate-like member overlapping portion 300 can be improved while more reliably preventing spatter S scattered from the plate-like member overlapping portion 300 on the side that is not irradiated with the laser light L from adhering to components installed inside case 5.

[0059] Next, a case having a pedestal according to a sixth embodiment of the present invention will be described with reference to the drawings. The case having a pedestal according to the sixth embodiment shares major components with the cases having pedestals according to the first to fifth embodiments, and therefore the same components as those in the cases having pedestals according to the first to fifth embodiments will be described using the same reference numerals. FIG. 6 is a partial side cross-sectional view of the case having a pedestal according to the sixth embodiment of the present invention. FIG. 6 is also a partial side cross-sectional view of the case in the width direction W of the first metal plate member 100 and the second metal plate member 200.

[0060] In cases 1, 2, 3, and 4 according to the first to fourth embodiment examples, the tip portion 21 of the support portion 20 of the base portion 11, 12, 13, and 14, respectively, is an approximately flat surface. However, instead, as shown in FIG. 6, in case 6 having a base portion 16 according to the sixth embodiment example, the tip portion 21 of the support portion 20 has a groove portion 23 recessed in the thickness direction T of the plate-like member overlapping portion 300.

[0061] Case 6 is provided with a plurality of grooves 23, and in Fig. 6, two grooves 23 are provided. In case 6, space 30 of base 16 may be a recess recessed toward inner surface 10 of case 6, or may be a through-hole penetrating wall surface 19 that defines case 6. For ease of explanation, in Fig. 6, space 30 is shown as a recess recessed toward inner surface 10 of case 6.

[0062] Because the tip 21 of the support part 20 has a groove part 23 recessed in the thickness direction T of the plate-like member overlapping part 300, the contact area between the tip 21 of the support part 20 and the plate-like member overlapping part 300 is reduced, and it is possible to prevent the heat during laser welding from being conducted to the support part 20 and melting the support part 20. Furthermore, in the case 6, it is possible to prevent the support part 20 from being melted by the heat during laser welding, and it is therefore possible to prevent the plate-like member overlapping part 300 from adhering to the base part 16.

[0063] Furthermore, in the case 6, by providing the groove portion 23, spatter S scattered in the planar direction of the plate-like member overlapping portion 300 from the plate-like member overlapping portion 300 that is not on the side irradiated with the laser light L is captured in the groove portion 23. This makes it possible to more reliably prevent the spatter S from leaking outside the base portion 16. Therefore, by providing the groove portion 23 in the support portion 20 of the base portion 15, it is possible to more reliably prevent the spatter S scattered in the planar direction of the plate-like member overlapping portion 300 from leaking outside the base portion 16.

[0064] From the above, the case 6 can prevent the plate-shaped member overlapping portion 300 from adhering to the tip portion 21 of the support portion 20 due to the heat generated during laser welding, while more reliably preventing spatter S scattered from the plate-shaped member overlapping portion 300 on the side that is not irradiated with the laser light L from adhering to components installed inside the case 6.

[0065] Next, other embodiments of the case of the present invention will be described. In the cases having a base according to the third to sixth embodiments, no adhesive material was provided on the inner surface of the space, but an adhesive material may also be provided on the inner surface of the space, if necessary.

[0066] Furthermore, in the cases having a base portion according to each of the above-described embodiments, the support portion is a peripheral wall portion protruding from the inner surface of the case, but instead, it may be two opposing wall portions protruding from the inner surface of the case.

[0067] The thickness of the first metal plate-shaped member 100 and the thickness of the second metal plate-shaped member 200 are not particularly limited, and the thickness of the first metal plate-shaped member 100 may be thinner than the thickness of the second metal plate-shaped member 200, or the thickness of the first metal plate-shaped member 100 may be thicker than the thickness of the second metal plate-shaped member 200, or the thickness of the first metal plate-shaped member 100 and the thickness of the second metal plate-shaped member 200 may be approximately the same.

[0068] Furthermore, in the cases having a base portion according to each of the above-described embodiments, the first metal plate member 100 and the second metal plate member 200 are laser welded, but it is sufficient that the first metal plate member 100 and the second metal plate member 200 are welded, and instead of laser welding, the first metal plate member 100 and the second metal plate member 200 may be welded by, for example, electron beam welding, arc welding, etc. [Explanation of symbols]

[0069] 1, 2, 3, 4, 5, 6 cases 11, 12, 13, 14, 15, 16 Base 20 Support part 21 Tip 22 Step 23 Groove 30 Space section 33 Suction hole 35 through holes

Claims

1. A case that accommodates at least a first metal plate member and a second metal plate member that is welded to the first metal plate member, the inner surface of the case has a base portion, The base portion is a support portion that supports, within the case, at least a partial area of ​​a plate-shaped member overlapping portion where the first metal plate-shaped member and the second metal plate-shaped member are overlapped; a space provided between the support portions and facing the weld formed at the plate-like member overlapping portion in a thickness direction of the plate-like member overlapping portion; A case having a base portion, comprising:

2. 2. The case having a base according to claim 1, wherein the space is a recess recessed toward the inner surface of the case.

3. The case having a base according to claim 2 , wherein an adhesive material is provided on the inner surface of the recess.

4. The case with a base according to claim 2 or 3, wherein the base further comprises a suction hole communicating with the recess and having an opening inside the case.

5. The case having a base according to claim 1 , wherein the space is a through-hole that penetrates a wall surface that defines the case.

6. The case with a base according to claim 1 , wherein the tip of the support portion has a step portion that is a step in the thickness direction of the overlapping portion of the plate-like members.

7. The case with a base according to claim 1 , wherein a tip of the support portion has a groove recessed in a thickness direction of the overlapping portion of the plate-like members.

8. The case having a base according to claim 1 , wherein the case is made of resin.

9. The case with a base according to claim 8, wherein the base is made of resin and is integrally molded with the case.

10. 2. The case having a base according to claim 1, wherein the case is a housing for an electrical junction box mounted on a battery pack.

11. The case having a base according to claim 1 , wherein at least one of the first metal plate member and the second metal plate member is a bus bar.

12. The case having a base portion according to claim 1 , wherein the welding is laser welding.

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