Electrical junction box

Abstract

To provide an electrical connection box that can improve the strength of the divided surfaces even if the case has a divided structure. [Solution] The electrical junction box 1 comprises a first case 6, a second case 7, and a pair of busbars 22. The second case 7 is formed separately from the first case 6 and is integrated with the first case 6 by assembling the second case 7 with the first case 6. The pair of busbars 22 are housed inside an annular noise-resistant core 23 and electrically connect the electrical paths. The pair of busbars 22 are arranged to traverse the first case 6 and the second case 7.

Description

Technical Field

[0001] The present invention relates to an electrical connection box.

Background Art

[0002] Conventionally, as disclosed in Patent Document 1, an electrical connection box that relays the electrical path of in-vehicle electrical components is well-known. The electrical connection box is equipped with various electrical elements such as, for example, relays, fuses, current sensors, etc.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In recent years, with the increase in the magnitude of the current flowing through the electrical connection box and the increase in electrical elements, the case of the electrical connection box has a tendency to become larger. For this reason, for the purpose of ease of manufacturing and handling of the case, it has been considered to make the case a split structure. However, when the case is a split structure, when a bending load is applied to the case, there is a possibility that the case will separate at the split surface where the split cases are assembled. Therefore, when the case is a split structure, ensuring the strength of the split surface has been an issue.

[0005] An object of the present disclosure is to provide an electrical connection box capable of improving the strength of the split surface even when the case is a split structure.

Means for Solving the Problems

[0006] An electrical junction box that solves the aforementioned problem is configured to be interposed in the middle of an electrical path and comprises a first case, a second case formed separately from the first case and integrated with the first case by assembling the first case, and a pair of busbars housed inside an annular noise-resistant core and electrically connecting the electrical path, wherein the pair of busbars are arranged to traverse the first case and the second case. [Effects of the Invention]

[0007] This disclosure shows that even if the case has a segmented structure, the strength of the segmented surfaces can be improved. [Brief explanation of the drawing]

[0008] [Figure 1] Figure 1 is a perspective view of an electrical junction box. [Figure 2] Figure 2 is a perspective view of the divided case before assembly. [Figure 3] Figure 3 is an enlarged perspective view of a portion of Case 1. [Figure 4] Figure 4 is an enlarged perspective view of a portion of Case 2. [Figure 5] Figures 5(a) and 5(b) are explanatory diagrams showing how the engagement mechanism locks. [Figure 6] Figure 6 is a perspective view of the structure in which the divided case is supported by busbars. [Figure 7] Figure 7 is an exploded perspective view of the structure in which the divided case is supported by busbars. [Figure 8] Figure 8 is a perspective view of the holder. [Figure 9] Figure 9 is a cross-sectional view taken along the line IX-IX shown in Figure 6. [Figure 10] Figure 10 is a perspective view of a busbar held in a holder. [Figure 11] Figure 11 is a plan view of the busbar held in the holder. [Figure 12] Figure 12 is a perspective view showing the configuration of the heat sink. [Figure 13]Figure 13 is a diagram showing how the busbar supports the split case. [Modes for carrying out the invention]

[0009] First, the embodiments of this disclosure will be listed and described. [1] The electrical junction box of the present disclosure is configured to be interposed in the middle of an electrical path and comprises a first case, a second case formed separately from the first case and integrated with the first case by assembling the first case, and a pair of busbars housed inside an annular noise-resistant core and electrically connecting the electrical path, wherein the pair of busbars are arranged to traverse the first case and the second case.

[0010] With this configuration, even if a bending load is applied to a case having a first case and a second case, the bending load can be supported by a pair of busbars positioned to span across the first and second cases. Therefore, the bending load is not directly applied to the dividing surfaces of the first and second cases. Thus, even if the case has a divided structure, the strength of the dividing surfaces can be improved.

[0011] [2] In the above [1], the pair of busbars is such that one is a positive electrode busbar and the other is a negative electrode busbar. With this configuration, by utilizing the pair of positive electrode busbars and negative electrode busbars, it is possible to improve the strength of the divided surface in the case of a divided structure.

[0012] [3] In [1] or [2] above, the pair of busbars are formed in a plate shape and arranged in overlapping order in the thickness direction. With this configuration, since the pair of plate-shaped busbars are arranged in overlapping order, the bending load can be supported by the pair of busbars which have high strength against bending. This further contributes to ensuring the strength of the divided surface.

[0013] [4] In any one of [1] to [3] above, the electrical connection box includes an engaging mechanism that integrates the first case and the second case by engaging a locking piece formed on one of the first case and the second case with a protruding portion formed on the other of them. According to this configuration, since the engaging mechanism is provided on the dividing surface between the first case and the second case, it is possible to firmly assemble the first case and the second case. Therefore, it further contributes to ensuring the strength of the dividing surface.

[0014] [5] In any one of [1] to [4] above, the electrical connection box includes a holder that holds the pair of busbars while insulating them. According to this configuration, since the busbars are held by the holder, it is possible to easily position the busbars and make it difficult for them to deviate from the specified positions.

[0015] [6] In any one of [1] to [5] above, the electrical connection box includes a heat dissipation plate provided to dissipate heat generated in the electrical path and arranged to cross the first case and the second case. According to this configuration, it is possible to support the bending load applied to the case by the heat dissipation plate as well, which further contributes to improving the strength of the dividing surface.

[0016] [Details of the Embodiment of the Present Disclosure] Specific examples of the present disclosure will be described below with reference to the drawings. It should be noted that the present invention is not limited to these examples, and is defined by the claims, and is intended to include all modifications within the meaning and scope equivalent to the claims. In each drawing, for the sake of convenience of explanation, a part of the configuration may be shown exaggerated or simplified. Also, the dimensional ratios of each part may be different from the actual ones.

[0017] (Electrical Connection Box 1) As shown in Figure 1, the electrical junction box 1 comprises a housing 2 on which the electrical components of the electrical junction box 1 are mounted. The housing 2 includes a case 3 (an upper case in this example) and a lower case 4. The case 3 and the lower case 4 are assembled together by, for example, a known mounting structure. Examples of such mounting structures include a claw-fitting structure, a screw-fastening structure, and a bolt-fastening structure. The electrical junction box 1 is interposed in the middle of an electrical path to perform, for example, coupling, relaying, branching, or a combination thereof of electrical paths.

[0018] The electrical junction box 1 is used, for example, in a vehicle's battery. The electrical junction box 1 is housed, for example, inside a battery pack (not shown). Examples of vehicles include electric vehicles, plug-in hybrid vehicles, and fuel cell vehicles.

[0019] (Case 3) As shown in Figure 2, case 3 comprises a first case 6 and a second case 7 that is assembled to the first case 6. The second case 7 is formed separately from the first case 6 and is integrated with the first case 6 by assembling it to the second case 6. Thus, case 3 has a divided structure in which the case portion is divided. The first case 6 and the second case 7 are assembled together by an engagement mechanism 8 provided between the first case 6 and the second case 7.

[0020] (Engagement mechanism 8) As shown in Figure 2, the engagement mechanism 8 has a first locking part 10 provided on the first case 6 and a second locking part 11 provided on the second case 7. Multiple sets of the first locking part 10 and the second locking part 11 (in this example, three sets including those not shown) are provided between the first case 6 and the second case 7. The multiple sets of the first locking part 10 and the second locking part 11 are arranged in a direction perpendicular to the direction in which the first case 6 and the second case 7 are aligned (the X-axis direction in Figure 2, etc.; hereafter referred to as the longitudinal direction of the case) on the contact surface between the first case 6 and the second case 7 when assembled (the Y-axis direction in Figure 2, etc.; hereafter referred to as the short-side direction of the case).

[0021] As shown in Figures 3 and 4, the engagement mechanism 8 has a locking structure that engages the claw portion with the mating part. As shown in Figure 3, the first locking portion 10 has a projection 13 that protrudes toward the second case 7, and a pair of first case-side support portions 14 arranged on both sides of the projection 13 in the case's short-side direction. Each of the first case-side support portions 14 has a hole 15 that opens toward the rear side of the first case 6, a slit 16 that extends in the height direction of the first case 6 (the Z-axis direction in Figure 3, etc.) and communicates with the hole 15, and a pair of wall portions 17 arranged on both sides of the slit 16 in the case's short-side direction.

[0022] As shown in Figure 4, the second locking portion 11 has a locking piece 18 that engages with the protrusion 13 of the first locking portion 10, and a pair of second case-side support portions 19 arranged on both sides of the locking piece 18 in the short direction of the case. Each of the second case-side support portions 19 is formed in a shape that extends in the height direction of the second case 7 (the Z-axis direction as shown in Figure 4, etc.), and is formed in a substantially T-shape in plan view.

[0023] (Assembly of Case 6 and Case 7) As shown in Figures 3 and 4, when assembling the first case 6 and the second case 7, the second case side support part 19 is inserted into the hole 15 of the first case side support part 14, and the second case side support part 19 is inserted into the hole 15 along the slit 16 of the first case side support part 14.

[0024] As shown in Figure 5(a), while the second case-side support portion 19 is being inserted into the hole 15, the protrusion 13 of the first locking portion 10 pushes the locking piece 18 of the second locking portion 11, causing it to bend and allowing the insertion of the second case-side support portion 19 into the hole 15 to continue. As shown in Figure 5(b), when the second case-side support portion 19 has entered the hole 15, the protrusion 13 of the first locking portion 10 and the locking piece 18 of the second locking portion 11 engage.

[0025] (Bus bar 22) Figure 6 is a perspective view showing the internal structure of case 3. The electrical junction box 1 includes a pair of busbars 22 that electrically connect electrical paths within the electrical junction box 1. In this example, the busbars 22 are housed inside an annular noise-resistant core 23. The pair of busbars 22 may consist of, for example, a busbar 22 with a positive electrode (denoted as the first busbar 24) and a busbar 22 with a negative electrode (denoted as the second busbar 25). The pair of busbars 22 are formed in a plate shape and arranged overlapping in the thickness direction.

[0026] As shown in Figure 7, the first busbar 24 has a three-dimensional shape. Specifically, the first busbar 24 has a first piece 28 extending in the direction of alignment of the first case 6 and the second case 7 (the X-axis direction in Figure 7), a second piece 29 bent at approximately 90 degrees in the height direction of case 3 from the edge of the first piece 28 closer to the second case 7, and a third piece 30 bent at approximately 90 degrees from the edge of the second piece 29 (bottom end in the figure) so as to be aligned with the first piece 28. The first piece 28 and the third piece 30 are arranged, for example, on a plane along the component mounting surface in case 3, specifically on the XY axis plane in the figure. The second piece 29 extends, for example, on a plane along the height direction of case 3.

[0027] The first busbar 24 has a plurality of holes 32 through which the shaft portion of the fastening portion 31 that fixes the first busbar 24 to the case 3 passes. The holes 32 include a first insertion hole 32a located at one end of the first piece 28 and a second insertion hole 32b located at the other end of the first piece 28. In this example, the second insertion hole 32b is located in a protruding piece 33 that projects laterally from the end of the first piece 28.

[0028] The fastening portion 31 is, for example, a screw. The fastening portion 31 is fastened to the fastened portion 34a of the first case 6 by being inserted through the first insertion hole 32a (fastening portion 31a), and fastened to the fastened portion 34b of the second case 7 by being inserted through the second insertion hole 32b (fastening portion 31b). The fastened portions 34a and 34b are, for example, seats having holes into which screws are threaded.

[0029] The second busbar 25 has a three-dimensional shape. Specifically, the second busbar 25 has a first piece 35 extending in the direction of alignment of the first case 6 and the second case 7 (the X-axis direction in Figure 7), a second piece 36 bent at approximately 90 degrees in the height direction of case 3 from the side end of the first piece 35 closer to the first case 6, and a third piece 37 bent at approximately 90 degrees from the edge of the second piece 36 (bottom end in the figure) so as to be aligned with the first piece 35. The first piece 35 and the third piece 37 are arranged, for example, on a plane along the component mounting surface in case 3, specifically on the XY axis plane in the figure. The second piece 36 extends, for example, on a plane along the height direction of case 3.

[0030] The second busbar 25 has multiple holes 39 through which the shaft portion of the fastening portion 38 that secures the second busbar 25 to the case 3 passes. In this example, the holes 39 include a first insertion hole 39a located at one end of the first piece 35 and a second insertion hole 39b located at the other end of the first piece 35. In this example, the first insertion hole 39a is located in a protruding piece 40 that projects laterally from the end of the first piece 35.

[0031] The fastening portion 38 is, for example, a screw. The fastening portion 38 is fastened to the fastened portion 34a of the first case 6 by the portion inserted through the first insertion hole 39a (fastening portion 38a), and fastened to the fastened portion 34b of the second case 7 by the portion inserted through the second insertion hole 39b (fastening portion 38b).

[0032] (Core 23) As shown in Figure 7, the core 23 has an annular core body 42 and a cover member 43 that covers the surface of the core body 42. The core body 42 accommodates the busbar 22 in an opening 42a. The core 23 is, for example, a ferrite core.

[0033] (Holder 46) As shown in Figures 7 and 8, the electrical junction box 1 includes a holder 46 for holding the busbars 22 and the core 23. The holder 46 holds the pair of busbars 22 while insulating them. The holder 46 is made of, for example, resin. The holder 46 has, for example, a main frame 47 extending in the longitudinal direction of the busbars 22 and an annular frame 48 formed to surround the main frame 47 from the periphery. The main frame 47 is arranged to divide the inside of the annular frame 48 into two sections. The core 23 is mounted on the outer circumference of the annular frame 48. A flange 49 is formed on the edge of the annular frame 48 to prevent the core 23 from falling out in the insertion direction.

[0034] As shown in Figure 9, the holder 46 has the second busbar 25 positioned on the upper surface of the main frame 47. The holder 46 has the first busbar 24 positioned on the inner surface of the lower wall 50 of the annular frame 48. The first busbar 24 and the second busbar 25 are insulated by the main frame 47 of the holder 46 interposed between them. In this way, the holder 46 insulates the first busbar 24 and the second busbar 25.

[0035] As shown in Figures 8 and 9, the holder 46 has a core retention portion 51 that prevents the core 23 from coming out. The core retention portion 51 is, for example, a flexible claw. The core retention portion 51 is located, for example, on the annular frame 48 on the opposite side of the flange 49. The core 23 is positioned in the holder 46 by one axial end being supported by the flange 49 and the other axial end being supported by the core retention portion 51.

[0036] As shown in Figure 10, the holder 46 has a first busbar engaging portion 52 that engages with a first busbar 24 attached to the holder 46. The first busbar engaging portion 52 is, for example, a flexible claw piece that positions the first busbar 24. In this example, the first busbar engaging portion 52 includes an engaging projection 52a that engages with a notch 53 formed in the first busbar 24, and an engaging projection 52b that engages with the end face of the first busbar 24. Thus, a pair of first busbar engaging portions 52 are arranged in the width direction of the holder 46.

[0037] As shown in Figure 11, the holder 46 has a second busbar engaging portion 54 that engages with a second busbar 25 attached to the holder 46. The second busbar engaging portion 54 is, for example, a flexible claw piece that positions the second busbar 25. The second busbar engaging portion 54 is formed in a shape that extends from the end edge of the annular frame 48 in the longitudinal direction of the holder 46. In this example, a pair of second busbar engaging portions 54 are arranged in the width direction of the holder 46. The second busbar engaging portion 54 positions the second busbar 25 in the holder 46 by engaging with a notch 55 formed in the second busbar 25.

[0038] (Placement of bus bar 22) As shown in Figures 6 and 7, the pair of busbars 22 are arranged to traverse between the first case 6 and the second case 7. In this example, the first busbar 24 is fixed to the first case 6 by fastening part 31a and to the second case 7 by fastening part 31b. The second busbar 25 is fixed to the first case 6 by fastening part 38a and to the second case 7 by fastening part 38b.

[0039] As shown in Figure 9, the first busbar 24 is fixed to the first case 6 by fastening part 31a in a state where it overlaps with the plate-shaped wiring 57 that constitutes the electrical path at the part where it is fixed to the first case 6. The plate-shaped wiring 57 is electrically connected to a relay 58 (see Figure 6, etc.) that shuts off the electrical path in the event of an overload. The second busbar 25 is fixed to the first case 6 by fastening part 38b in a state where it overlaps with the plate-shaped wiring 59 that constitutes the electrical path at the part where it is fixed to the second case 7.

[0040] (heat sink 61) As shown in Figure 12, the electrical junction box 1 is equipped with a heat sink 61 that dissipates heat generated in the electrical path inside the electrical junction box 1. The heat sink 61 is positioned to cross the first case 6 and the second case 7. The heat sink 61 has a main body piece 62 that crosses the first case 6 and the second case 7, a first mounting piece 63 positioned at one end of the main body piece 62, and a second mounting piece 64 positioned at the other end of the main body piece 62. The heat sink 61 is made of, for example, metal. In this example, the heat sink 61 is mounted in contact with the plate-shaped wiring 65 that is electrically connected to the relay 58, thereby dissipating heat generated in the plate-shaped wiring 65.

[0041] The heat sink 61 is fixed to the first case 6 by a fastening portion 67a through a first mounting piece 63, together with the plate-shaped wiring 65. The fastening portion 67a is inserted through a through hole 66a formed in the first mounting piece 63 and fastened to a fastened portion 68a of the first case 6. The heat sink 61 is fixed to the second case 7 by a fastening portion 67b through a second mounting piece 64, also by a fastening portion 67b through a through hole 66b formed in the second mounting piece 64 and fastened to a fastened portion 68b of the second case 7. The fastening portions 67a and 67b are, for example, screws.

[0042] (Effect of the embodiment) Next, the operation of the electrical junction box 1 in this embodiment will be described. As shown in Figure 13, the case 3 of the electrical junction box 1 is divided into a first case 6 and a second case 7 due to its increased size. When case 3 has a divided structure, a dividing surface exists between the first case 6 and the second case 7. In this case, if a bending load is applied to case 3, for example, as indicated by the arrow in Figure 13, and the bending load is large, there is a possibility that the first case 6 and the second case 7 will separate into two parts at the dividing surface.

[0043] In this example, the pair of busbars 22 attached to case 3 are positioned to traverse the first case 6 and the second case 7. Therefore, even when a bending load is applied to the first case 6 and the second case 7, the bending load can be supported by the pair of busbars 22. As a result, the strength of case 3 against bending loads is increased, making it less likely for the first case 6 and the second case 7 to separate.

[0044] (Effects of the embodiment) According to the configuration of the above embodiment, the following effects can be obtained. (1) The electrical junction box 1 is interposed in the middle of the electrical path. The electrical junction box 1 comprises a first case 6, a second case 7, and a pair of busbars 22. The second case 7 is formed separately from the first case 6 and is integrated with the first case 6 by assembling the second case 7 with the first case 6. The pair of busbars 22 are housed inside an annular noise-resistant core 23 and electrically connect the electrical path. The pair of busbars 22 are arranged to traverse the first case 6 and the second case 7.

[0045] With this configuration, even if a bending load is applied to case 3 having a first case 6 and a second case 7, the bending load can be supported by a pair of busbars 22 positioned to span across the first case 6 and the second case 7. Therefore, the bending load is not directly applied to the dividing surfaces of the first case 6 and the second case 7. Thus, even though case 3 has a divided structure, the strength of the dividing surfaces can be improved.

[0046] (2) The pair of busbars 22 consist of one positive electrode busbar 22 and the other negative electrode busbar 22. With this configuration, by utilizing the pair of positive electrode busbars 22 and negative electrode busbars 22, the strength of the divided surface can be improved in case 3 of the divided structure.

[0047] (3) The pair of busbars 22 are formed in a plate shape and arranged in overlapping order in the thickness direction. With this configuration, since the pair of plate-shaped busbars 22 are arranged in overlapping order, the pair of busbars 22, which have high strength against bending, can support the bending load. Therefore, this further contributes to ensuring the strength of the divided surface.

[0048] (4) The engagement mechanism 8 provided in the electrical junction box 1 integrates the first case 6 and the second case 7 by engaging a locking piece 18 formed on one of the first case 6 and the second case 7 with a protrusion 13 formed on the other of the two. With this configuration, since the engagement mechanism 8 is provided on the dividing surface between the first case 6 and the second case 7, it is possible to firmly assemble the first case 6 and the second case 7. This further contributes to ensuring the strength of the dividing surface.

[0049] (5) The electrical junction box 1 is equipped with a holder 46 that holds a pair of busbars 22 while insulating them. With this configuration, since the busbars 22 are held by the holder 46, it is possible to easily position the busbars 22 and to prevent them from shifting from their specified positions.

[0050] (6) The heat sink 61 provided on the electrical junction box 1 is provided to dissipate heat generated in the electrical path and is positioned to cross the first case 6 and the second case 7. With this configuration, the bending load applied to case 3 can also be supported by the heat sink 61, which further contributes to improving the strength of the divided surface.

[0051] (Other embodiments) Furthermore, this embodiment can be implemented with the following modifications. This embodiment and the following modifications can be combined with each other to the extent that they do not contradict each other technically.

[0052] The pair of busbars 22 are not limited to being arranged in overlapping positions; for example, they may be arranged side by side in the horizontal direction. The pair of busbars 22 are not limited to a set of positive and negative electrodes; any busbar that transmits and receives electrical signals is acceptable.

[0053] The busbar 22 is not limited to a three-dimensional shape; for example, it may be a flat plate shape. The structure for fixing the busbar 22 to the case 3 is not limited to a structure using fastening parts 31 and 38, but may also be a structure in which the busbar 22 is fixed to a locking member provided on the case 3, for example.

[0054] The electrical junction box 1 is not limited to a configuration in which electrical components are placed inside the case 3; for example, the electrical components may be mounted on the surface of the case 3. Housing 2 may consist of three or more case components.

[0055] The engagement mechanism 8 may have a first locking portion 10 provided on the second case 7 and a second locking portion 11 provided on the first case 6. The engagement mechanism 8 can be any structure as long as it is a structure that can assemble the case 3 and the lower case 4.

[0056] The electrical components mounted in the electrical connection box 1 include relays 58, fuses, sensors, and the like. The electrical connection box 1 may omit the engagement mechanism 8.

[0057] The electrical junction box 1 may omit the heat sink 61. The electrical connection box 1 may be used in items other than vehicles. This disclosure is described in accordance with the embodiments, but it is understood that this disclosure is not limited to such embodiments or structures. This disclosure also includes various modifications and variations within the scope of equivalence. In addition, various combinations and forms, as well as other combinations and forms that include only one, more, or less of those elements, fall within the scope and concept of this disclosure. [Explanation of Symbols]

[0058] 1. Electrical junction box 2 Housing 3 cases 4 Lower Case 6. Case 1 7. Case 2 8. Engagement mechanism 10. First Rock Section 11. Second Rock Section 13 Protrusion 14. First case side support section 15 holes 16 slits 17 Wall 18 rock pieces 19. Second case side support section 22 Bus Bar 23 cores 24 First Bus Bar 25 Second Bus Bar 28 1st piece 29 2nd piece 30 3rd piece 31 Fastening section 31a Fastening section 31b Fastening section 32 holes 32a First insertion hole 32b Second insertion hole 33 Projecting piece 34a Fastened part 34b Fastened part 35 1st piece 36 2nd piece 37 3rd piece 38 Fastening section 38a Fastening part 38b Fastening section 39 holes 39a First insertion hole 39b 2nd insertion hole 40 Projecting piece 42-core main unit 42a hole 43 Cover component 46 Holder 47 Main frame 48 ring frame 49 Flange 50 Lower wall 51 Core retention section 52 First busbar engagement portion 52a Engagement protrusion 52b Engagement protrusion 53 Notch 54 Second busbar engagement section 55 Notch 57. Board-type wiring 58 Relay 59. Board-type wiring 61 Heat sink 62 Body piece 63 First mounting piece 64 Second mounting piece 65. Board-type wiring 66a Through hole 66b Through hole 67a Fastening section 67b Fastening section 68a Fastened part 68b Fastened part

Claims

1. An electrical junction box interposed in the middle of an electrical path, Case 1 and, A second case is formed separately from the first case and is integrated with the first case by assembling the first case, It comprises a pair of busbars housed inside an annular noise-resistant core and electrically connecting the electrical path, The pair of busbars are arranged across the first case and the second case in an electrical junction box.

2. The electrical connection box according to claim 1, wherein one of the pair of busbars is a positive electrode busbar and the other is a negative electrode busbar.

3. The electrical connection box according to claim 1, wherein the pair of busbars are formed in a plate shape and arranged in overlapping order in the thickness direction.

4. The electrical connection box according to claim 1, further comprising an engagement mechanism that integrates the first case and the second case by engaging a locking piece formed on one of the first case and the second case with a protrusion formed on the other of the two.

5. The electrical junction box according to claim 1, further comprising a holder for holding the pair of busbars while insulating them.

6. The electrical connection box according to claim 1, further comprising a heat sink provided for dissipating heat generated in the electrical path and arranged to span the first case and the second case.

Images