Junction box and vehicle

Abstract

The embodiment of the utility model provides a junction box and a vehicle. The junction box comprises an insulating box body and a metal upper cover, a shielding conductive layer is arranged on the outer surface of the insulating box body; the metal upper cover covers the insulating box body and is in contact with the shielding conductive layer; and the metal upper cover and the insulating box body are enclosed to form a mounting cavity. Therefore, compared with a metal box body in the prior art, the insulation box body provided by the embodiment of the utility model is light in weight, can reduce the weight of the junction box, and facilitates the lightweight design of a vehicle. Besides, the shielding conductive layer is arranged on the outer surface of the insulating box body and is in contact with the metal upper cover, so that a closed shielding space can be formed, the junction box can meet the electromagnetic shielding requirement, and the safety performance of the vehicle can be improved.

Description

Technical Field

[0001] The present application belongs to the field of vehicle technology, and specifically relates to a junction box and a vehicle. Background Art

[0002] The high-voltage junction box is a key component of electric vehicles, which can complete the output and distribution of the high-voltage power supply of the power battery on the electric vehicle. However, since the high voltage and high current passing through the high-voltage junction box can easily interfere with the normal operation of other components inside the vehicle, the high-voltage junction box needs to have good electromagnetic shielding performance.

[0003] In the prior art, a high-voltage junction box generally includes a metal box body, a metal upper cover, and an insulating mounting seat. The metal box body and the metal upper cover enclose a closed chamber, and the insulating mounting seat with conductive components installed is arranged in the chamber to achieve electromagnetic shielding. However, due to the high density of metal materials, the overall weight of the high-voltage junction box is relatively large, which is not conducive to the lightweight design of the vehicle. Utility Model Content

[0004] The present application aims to provide a junction box and a vehicle to solve the problem that the existing junction box is heavy and is not conducive to the lightweight design of the vehicle.

[0005] In order to solve the above technical problems, this application is implemented as follows:

[0006] In a first aspect, the present application discloses a junction box, the junction box comprising: an insulating box body and a metal upper cover;

[0007] The outer surface of the insulating box body is provided with a shielding conductive layer;

[0008] The metal upper cover is covered on the insulating box body and is in contact with the shielding conductive layer. The metal upper cover and the insulating box body are enclosed to form an installation cavity.

[0009] Optionally, the shielding conductive layer is an electroplating layer.

[0010] Optionally, the junction box further comprises a connector, and the connector is connected to the insulating box body;

[0011] The connector is provided with a metal shell, and the metal shell is in contact with the shielding conductive layer.

[0012] Optionally, the connector further comprises a cable, at least a portion of the cable being disposed within the metal housing;

[0013] The cable is provided with a shielding layer, and the shielding layer located in the metal shell is in contact with the metal shell.

[0014] Optionally, the insulating box body includes a first bottom wall;

[0015] The junction box further includes a first conductive member, which is disposed in the installation cavity, and at least a portion of the first conductive member is embedded in the first bottom wall.

[0016] Optionally, the first conductive member includes: a conductive body and a connecting member;

[0017] At least a portion of the conductive body is bent toward the first bottom wall and embedded in the first bottom wall;

[0018] Along the extension direction of the connecting member, the connecting member includes a first end and a second end which are arranged away from each other, the first end is connected to the conductive body, and the second end is embedded in the first bottom wall.

[0019] Optionally, the conductive body comprises a first conductive body and a second conductive body connected to each other, and the second conductive body is embedded in the first bottom wall;

[0020] The first end is connected to the first conductive body.

[0021] Optionally, a heat dissipation hole is formed on the first bottom wall at a position corresponding to the second conductive body.

[0022] Optionally, the connecting member comprises a nut column and a cap sequentially arranged along the first direction, and the cap is arranged at the second end of the connecting member;

[0023] One end of the nut column facing away from the cover cap is fixedly connected to the conductive body, and one end of the nut column close to the cover cap is connected to the cover cap;

[0024] The cover cap and at least a portion of the nut column are embedded in the first bottom wall.

[0025] Optionally, a peripheral wall of the nut column is provided with an annular groove, and the annular groove is embedded in the first bottom wall;

[0026] And / or, a mounting groove is provided on one side of the cover cap close to the nut column, and the nut column is embedded in the mounting groove.

[0027] Optionally, a convex rib is provided on the inner side of the installation groove so that the nut column is interference fit in the installation groove.

[0028] Optionally, the junction box further comprises a connector, wherein the connector is connected to the insulating box body, wherein a connecting terminal is provided in the connector, and wherein the connecting terminal extends into the installation cavity and is electrically connected to the conductive body.

[0029] Optionally, the nut column has a threaded hole, and the conductive body is provided with a conducting hole at a position corresponding to the threaded hole;

[0030] The connecting terminal is arranged on a side of the conductive body away from the nut column, and the connecting terminal is provided with a terminal hole at a position corresponding to the conducting hole;

[0031] The junction box further includes a first fastener, which sequentially passes through the terminal hole and the conducting hole and is connected to the threaded hole, so as to electrically connect the connector to the first conductive member.

[0032] Optionally, an arc-shaped guide is provided at an edge of the conductive body close to the connecting terminal, and along the extension direction of the arc-shaped guide, the arc-shaped guide comprises a connecting section and a fitting section which are sequentially arranged, and the connecting section is close to the conductive body;

[0033] The connecting section is connected to the conductive body;

[0034] The embedding section extends in a direction away from the conductive body and is embedded in the first bottom wall.

[0035] Optionally, the junction box further includes an insulating layer, and the insulating layer is bonded to the inner surface of the metal upper cover.

[0036] Optionally, the insulating box body includes a first bottom wall, a supporting column is disposed on the first bottom wall, and a first gap is formed between an end of the supporting column away from the first bottom wall and the insulating layer.

[0037] Optionally, the insulating box body includes a first side wall;

[0038] The junction box further includes a waterproof breathable valve, which is arranged on the first side wall to connect the installation cavity with the external space.

[0039] Optionally, the junction box further includes a first sealing ring, which is arranged between the metal upper cover and the insulating box body.

[0040] Optionally, the insulating box body is provided with a first connecting hole, and a hole wall of the first connecting hole is provided with one of an anti-error boss or an anti-error groove;

[0041] The junction box also includes a connector, which is plugged into the first connecting hole. The connector is provided with the anti-error boss or the anti-error groove at a position corresponding to the first connecting hole, and the anti-error boss is engaged with the anti-error groove.

[0042] In a second aspect, the present application further discloses a vehicle, comprising the junction box as described in any one of the above items.

[0043] In the embodiment of the present application, the junction box includes: an insulating box body and a metal cover; the outer surface of the insulating box body is provided with a shielding conductive layer; the metal cover is covered on the insulating box body and in contact with the shielding conductive layer, and the metal cover and the insulating box body are enclosed to form an installation cavity. In this way, since an insulating box body is provided, on the one hand, compared with metal materials, insulating materials usually have a smaller density, that is, compared with the metal box body of the prior art, the insulating box body used in the present application has a lighter weight, thereby reducing the weight of the junction box; on the other hand, the conductive parts of the junction box can be directly installed in the insulating box body, and there is no need to additionally set up an insulating mounting seat, thereby further reducing the weight of the junction box, which is beneficial to the lightweight design of the vehicle. In addition, since the outer surface of the insulating box body is provided with a shielding conductive layer, and the shielding conductive layer is in contact with the metal cover, a closed shielding space can be formed, so that the junction box meets the electromagnetic shielding requirements, which is beneficial to improving the safety performance of the vehicle.

[0044] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0046] Figure 1 This is one of the structural schematic diagrams of a junction box provided in an embodiment of the present application;

[0047] Figure 2 This is the second structural schematic diagram of a junction box provided in an embodiment of the present application;

[0048] Figure 3 This is the third structural schematic diagram of a junction box provided in an embodiment of the present application;

[0049] Figure 4 is a circuit diagram of a junction box provided in an embodiment of the present application;

[0050] Figure 5 It is a structural schematic diagram of a first conductive member of a junction box provided in an embodiment of the present application;

[0051] Figure 6 yes Figure 5 A partial enlarged view of position A in the middle;

[0052] Figure 7 This is one of the structural schematic diagrams of the connecting member of the first conductive member provided in the embodiment of the present application;

[0053] Figure 8 This is the second structural schematic diagram of the connecting member of the first conductive member provided in the embodiment of the present application;

[0054] Fig. 9 is a schematic structural diagram of a cap of a connector provided in an embodiment of the present application;

[0055] Fig.10 is a schematic diagram of the assembly of the connector and the insulating box provided in an embodiment of the present application;

[0056] Fig.11 It is a schematic diagram of the assembly of the waterproof breathable valve and the insulating box body provided in the embodiment of the present application.

[0057] Reference numerals: 1. Insulating box body, 11. First bottom wall, 111. Heat dissipation hole, 112. Support column, 12. First side wall, 121. First connecting hole, 1211. Error-proofing groove, 122. Second connecting hole, 13. Mounting foot, 2. Metal upper cover, 3. Mounting cavity, 4. Conductive member, 41. First conductive member, 411. Conductive body, 4111. First conductive body, 41111. Conductive hole, 41112. Arc-shaped guide member, 4112. Second conductive body, 412. Connector, 4121 .Nut column, 41211.Threaded hole, 41212.Annular groove, 4122.Cap, 41221.Second bottom wall, 41222.Second side wall, 41223.Recess, 41224.Rib, 42.Second conductive member, 43.Fuse, 5.Connector, 51.Connecting terminal, 511.Terminal hole, 52.Anti-mistake boss, 53.Input connector, 54.Output connector, 6.Insulating layer, 7.First sealing ring, 8.Waterproof breathable valve, 81.Second sealing ring, X.First direction. DETAILED DESCRIPTION

[0058] The embodiments of the utility model will be described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the utility model, and cannot be understood as limiting the utility model. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0059] The term "first" or "second" in the specification and claims of this application may include one or more of the features explicitly or implicitly. In the description of this utility model, unless otherwise specified, "multiple" means two or more. In addition, "and / or" in the specification and claims means at least one of the connected objects, and the character " / " generally means that the objects connected before and after are in an "or" relationship.

[0060] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0061] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0062] An embodiment of the present application provides a junction box, which will be described in detail below with reference to the accompanying drawings.

[0063] Reference Figures 1 to 3 , showing a schematic diagram of the structure of a junction box provided in an embodiment of the present application, referring to Figure 4 , showing a circuit diagram of a junction box provided in an embodiment of the present application, referring to Figure 5 , showing a schematic diagram of the structure of a first conductive member of a junction box provided in an embodiment of the present application, referring to Figure 6 , showing Figure 5 A partial enlarged view of the A position in the middle, refer to Figures 7 and 8 , showing a schematic diagram of the structure of the connecting member of the first conductive member provided in an embodiment of the present application, referring to Fig. 9 , showing a schematic diagram of the structure of the cap of the connector provided in the embodiment of the present application, referring to Fig.10 , shows a schematic diagram of the assembly of the connector and the insulating box provided in the embodiment of the present application, referring to Fig.11 , shows a schematic diagram of the assembly of the waterproof breathable valve and the insulating box body provided in an embodiment of the present application.

[0064] like Figures 1 to 3As shown, the present application provides a junction box, comprising: an insulating box body 1 and a metal cover 2; a shielding conductive layer is provided on the outer surface of the insulating box body 1; the metal cover 2 covers the insulating box body 1 and contacts with the shielding conductive layer, and the metal cover 2 and the insulating box body 1 enclose an installation cavity 3.

[0065] In the embodiment of the present application, since an insulating box body 1 is provided, on the one hand, compared with metal materials, insulating materials generally have a smaller density, that is, compared with the metal box body of the prior art, the insulating box body 1 used in the present application has a lighter weight, thereby reducing the weight of the junction box; on the other hand, in practical applications, the junction box also includes a conductive member 4, which can be directly installed in the insulating box body 1 without the need for an additional insulating mounting seat, thereby further reducing the weight of the junction box, which is beneficial to the lightweight design of the vehicle. In addition, since a shielding conductive layer is provided on the outer surface of the insulating box body 1, and the shielding conductive layer is in contact with the metal upper cover 2, a closed shielding space can be formed, so that the high-voltage splitter meets the electromagnetic shielding requirements, which is beneficial to improving the safety performance of the vehicle.

[0066] It should be noted that the insulating box body 1 refers to a box body with insulating properties, and the outer surface of the insulating box body 1 refers to the surface outside the range of the installation cavity 3. In this way, while achieving electromagnetic shielding, the insulating environment in the installation cavity 3 can be maintained, which is convenient for the installation of the conductive member 4. In one embodiment, the insulating box body 1 is injection molded, and the plastic raw materials include but are not limited to 30% glass fiber reinforced polybutylene terephthalate (PBT-GF30), 30% glass fiber reinforced nylon 66 (PA66-GF30) or polyphenylene sulfide (PPS) and other materials. The shielding conductive layer refers to a layered structure with conductive properties. In one embodiment, the shielding conductive layer is an electroplating layer, specifically, the shielding conductive layer is an electroplating layer formed by uniformly depositing a conductive medium on the outer surface of the insulating box body 1 through an electroplating process, wherein the conductive medium may include but is not limited to chromium and copper. In addition, the material of the metal cover 2 includes but is not limited to copper, aluminum alloy and other materials with good conductive properties. The embodiment of the present application does not limit the specific material of the conductive medium and the metal cover 2, and those skilled in the art can choose according to actual needs. In actual applications, the insulating box body 1 and the metal upper cover 2 are fixedly connected by screws to form a junction box with shielding performance. In addition, the insulating box body 1 also includes a mounting foot 13, and the mounting foot 13 is connected to the frame to ground the junction box as a whole, which is beneficial to improve the electromagnetic shielding effect of the junction box.

[0067] In some optional embodiments of the present application, the junction box further includes a connector 5, which is connected to the insulating box body 1; the connector 5 is provided with a metal shell, which is in contact with the shielding conductive layer. The connector 5 further includes a cable, at least part of which is provided in the metal shell; the cable is provided with a shielding layer, which is in contact with the metal shell. In this way, electromagnetic shielding can be achieved by mutual conduction between the shielding layer of the cable, the metal shell of the connector 5, and the shielding conductive layer of the insulating box body 1, thereby avoiding the problem of mutual interference between multiple connectors 5 when transmitting current or electrical signals.

[0068] In practical applications, the connector 5 includes an input connector 53 and an output connector 54. The input connector 53 and the output connector 54 are connected to the insulating box body 1, and the connection terminals 51 of the input connector 53 and the output connector 54 extend into the mounting cavity 3. The voltage distribution can be achieved by connecting the connection terminals 51 with the conductive member 4. The embodiment of the present application does not limit the number of the input connector 53 and the output connector 54, and those skilled in the art can adjust it according to actual needs. In one embodiment, Figure 1 to Figure 2 As shown, the junction box includes an input connector 53, namely, an electronic continuously variable transmission system connector (E-CVT connector) and three output connectors 54, namely, an air conditioning connector (A / C connector), a positive temperature coefficient heater connector (PTC connector) and an on-board charger connector (OBC connector). Figure 4 As shown, the voltage input from the electronic continuously variable transmission system connector is shunted to the air conditioning connector, the positive temperature coefficient heater connector and the on-board charger connector through the conductive member 4, thereby realizing the distribution of the input voltage.

[0069] In practical applications, in order to reduce the wind resistance of the vehicle during driving, it is necessary to compress the height space of the front cabin of the vehicle. The junction box is usually set above the dual electric control in the front cabin of the vehicle, such as Figure 3 As shown, the junction box of the embodiment of the present application imitates the double electric control cover in appearance, that is, the junction box as a whole has a certain curvature to save space in the front cabin of the vehicle as much as possible.

[0070] In some optional embodiments of the present application, the insulating box body 1 includes a first bottom wall 11 ; the junction box also includes a first conductive member 41 , the first conductive member 41 is disposed in the installation cavity 3 , and at least a portion of the first conductive member 41 is embedded in the first bottom wall 11 .

[0071] In the embodiment of the present application, since at least a portion of the first conductive member 41 is embedded in the first bottom wall 11 of the insulating box body 1, the first conductive member 41 can be placed in an insulating environment, thereby reducing the safety distance required when the first conductive member 41 and other conductive members 4 are cross-arranged, which is beneficial to reducing the overall height of the junction box.

[0072] It should be noted that the height direction of the junction box is the first direction X shown in the figure. The first conductive member 41 of the embodiment of the present application is integrally formed with the insulating box body 1 through an insert injection molding process so that at least a portion of the first conductive member 41 is wrapped with insulating material.

[0073] In practical applications, in addition to the first conductive member 41, the junction box also includes other conductive members 4, such as the second conductive member 42 and the fuse 43. In one embodiment, the first conductive member 41 is a negative copper bar, the second conductive member 42 is a positive copper bar, the negative connection terminals 51 of the input connector 53 and the output connector 54 are connected through the negative copper bar, and the positive connection terminals 51 of the input connector 53 and the output connector 54 are connected through the positive copper bar and the fuse 43. When the current is overloaded, the fuse 43 melts to achieve short circuit protection. During the assembly of the junction box, since the negative copper bar is arranged across the installation cavity 3, at least part of the positive copper bar and the fuse 43 will cross or have a small distance from the negative copper bar. After testing, when the negative copper bar is not wrapped with insulating material, the safety distance between the negative copper bar and the positive copper bar or the fuse 43 is 8-10mm. When the negative copper bar is wrapped with insulating material, that is, when the negative copper bar is at least partially embedded in the first bottom wall 11, the safety distance between the negative copper bar and the positive copper bar or the fuse 43 can be reduced to 3mm, which can greatly reduce the overall height of the junction box. In addition, if Figure 1 As shown, the fuse 43 of the embodiment of the present application preferably adopts a waist-out terminal to reduce the height of the fuse 43, which is beneficial to further reduce the overall height of the junction box.

[0074] like Figures 5 and 6 As shown, the first conductive member 41 includes: a conductive body 411 and a connecting member 412; at least a portion of the conductive body 411 is bent toward the first bottom wall 11 and embedded in the first bottom wall 11; along the extension direction of the connecting member 412, the connecting member 412 includes a first end and a second end that are arranged away from each other, the first end is connected to the conductive body 411, and the second end is embedded in the first bottom wall 11.

[0075] Specifically, the conductive body 411 includes a first conductive body 4111 and a second conductive body 4112 connected to each other. The second conductive body 4112 is embedded in the first bottom wall 11 ; and the first end is connected to the first conductive body 4111 .

[0076] In the embodiment of the present application, since the first conductive member 41 includes a conductive body 411 and a connecting member 412, wherein the conductive body 411 includes a first conductive body 4111 and a second conductive body 4112, the second conductive body 4112 is bent toward the first bottom wall 11 and embedded in the first bottom wall 11, the connecting member 412 is connected to the first conductive body 4111, and one end of the connecting member 412 that is away from the first conductive body 4111, that is, the second end is embedded in the first bottom wall 11. In this way, on the one hand, the second conductive body 4112 can be placed in an insulating environment, which is conducive to reducing the safety distance required when the second conductive body 4112 is cross-set with other conductive members 4, and is conducive to reducing the overall height of the junction box. On the other hand, by embedding the second conductive body 4112 and the second end of the connecting member 412 in the first bottom wall 11 of the insulating box body 1, the first conductive member 41 can be reliably connected to the insulating box body 1, which is conducive to simplifying the assembly process of the junction box.

[0077] It should be noted that the extension direction of the connector 412 is the first direction X shown in the figure. The specific bending position of the conductive body 411, that is, the position of the second conductive body 4112, depends on the arrangement of the conductive member 4 in the installation cavity 3 and is not limited here. In addition, the number of connectors 412 is consistent with the number of connectors 5, that is, the number of input connectors 53 and output connectors 54. In one embodiment, four connectors 412 are provided, and the four connectors 412 are respectively connected to the first conductive body 4111, and one connector 412 is used to connect to the negative connection terminal 51 of a connector 5, so as to achieve conduction between the connector 5 and the first conductive member 41.

[0078] In some optional embodiments of the present application, the first bottom wall 11 is provided with a heat dissipation hole 111 at a position corresponding to the second conductive body 4112. During the use of the junction box, the first conductive member 41 will generate heat, and since the heat dissipation hole 111 is provided, at least part of the second conductive body 4112 can be exposed to the air, thereby achieving heat dissipation of the second conductive body 4112 and preventing the first conductive member 41 from overheating and affecting the transmission of current.

[0079] It should be noted that one or more heat dissipation holes 111 may be provided. The embodiment of the present application does not limit the number and location of the heat dissipation holes 111, and those skilled in the art may adjust the number and location according to actual needs. Figure 2 As shown, there are four heat dissipation holes 111, and the four heat dissipation holes 111 are arranged at positions where there is no intersection of the conductive member 4 to meet the requirements of safety distance. In addition, the second conductive body 4112 corresponding to the heat dissipation hole 111 can not only be used as a detection point for conduction detection and temperature rise test, but can also contact with the ejector pin surface of the mold during the insert injection molding process to achieve the positioning of the conductive body 411.

[0080] like Figures 7 and 8 The connecting member 412 includes a nut column 4121 and a cap 4122 arranged in sequence along the first direction X, and the cap 4122 is arranged at the second end of the connecting member 412; one end of the nut column 4121 away from the cap 4122 is fixedly connected to the conductive body 411, and one end of the nut column 4121 close to the cap 4122 is connected to the cap 4122; the cap 4122 and at least part of the nut column 4121 are embedded in the first bottom wall 11.

[0081] In the embodiment of the present application, since the nut column 4121 is provided, at least part of the nut column 4121 is embedded in the first bottom wall 11, so that the connection between the connector 5 and the first conductive member 41 can be achieved through the connection between the connecting terminal 51 and the nut column 4121, and the fixing reliability of the connector 5, the first conductive member 41 and the insulating box body 1 can be improved by embedding the nut column 4121 in the first bottom wall 11. Since the cap 4122 is provided, it can be avoided that glue overflow occurs at the nut column 4121 during the injection molding process, resulting in the threaded hole 41211 of the nut column 4121 being blocked, affecting the connection between the connecting terminal 51 and the nut column 4121. It should be noted that the nut column 4121 used in the embodiment of the present application is a nut column 4121 with a through hole.

[0082] In practical applications, when the connector 412 is used as an insert and is integrally injection molded with the insulating box body 1, in order to avoid glue overflow at the connector 412, the connector 412 usually adopts a blind hole nut column. After testing, under the condition of meeting the effective length of the thread, compared with the blind hole nut column, the embodiment of the present application adopts a nut column 4121 with a through hole, and the overall height of the nut column 4121 and the cap 4122 is smaller than the blind hole nut column, which can further compress the height of the insulating box body 1 while avoiding glue overflow, which is beneficial to further reduce the overall height of the junction box. In one embodiment, the first conductive part 41 and the insulating box body 1 are an integral injection molding structure, and the injection molding process is as follows: first, the nut column 4121 is riveted to the conductive body 411; then, the nut column 4121 and the cap 4122 are assembled together to form the first conductive part 41; finally, the first conductive part 41 is implanted into the mold as an insert for injection molding.

[0083] In some optional embodiments of the present application, the peripheral wall of the nut column 4121 is provided with an annular groove 41212, and the annular groove 41212 is embedded in the first bottom wall 11. In this way, when the nut column 4121 is used as an insert and is integrally injection-molded with the insulating box body 1, the pull-out force and torsional strength of the nut column 4121 can be improved, so that the nut column 4121 and the insulating box body 1 are reliably fixed together. It should be noted that the annular groove 41212 of the nut column 4121 is usually processed by a knurling box machine.

[0084] In some optional embodiments of the present application, such as Fig. 9 As shown, a mounting groove is provided on one side of the cap 4122 close to the nut column 4121, and the nut column 4121 is embedded in the mounting groove. Specifically, the cap 4122 includes a second bottom wall 41221 and a second side wall 41222, and the second side wall 41222 extends from the periphery of the second bottom wall 41221 toward the direction close to the nut column 4121, so that the second bottom wall 41221 and the second side wall 41222 enclose a mounting groove, and the nut column 4121 is embedded in the mounting groove. In one embodiment, a plurality of recessed portions 41223 are provided at one end of the second side wall 41222 away from the second bottom wall 41221, so that the end of the second side wall 41222 away from the second bottom wall 41221 is uneven. In this way, when the cap 4122 is used as an insert and is integrally injection-molded with the insulating box body 1, the pull-out force and torsional strength of the cap 4122 can be improved, so that the cap 4122 and the insulating box body 1 are reliably fixed together. In another embodiment, a rib 41224 is provided on the inner side of the installation groove, i.e., the inner side of the second side wall 41222 , so that the nut column 4121 can be interference fit in the installation groove, which is beneficial to improving the connection reliability between the nut column 4121 and the cap 4122 .

[0085] In some optional embodiments of the present application, the junction box further includes a connector 5, the connector 5 is connected to the insulating box body 1, a connection terminal 51 is provided in the connector 5, the connection terminal 51 extends into the installation cavity 3, and is electrically connected to the conductive body 411. In this way, the electrical connection between the connection terminal 51 and the conductive body 411 can realize the conduction between the connector 5 and the first conductive member 41.

[0086] Specifically, the nut column 4121 has a threaded hole 41211, and the conductive body 411 is provided with a through hole 41111 at a position corresponding to the threaded hole 41211; the connecting terminal 51 is arranged on the side of the conductive body 411 away from the nut column 4121, and the connecting terminal 51 is provided with a terminal hole 511 at a position corresponding to the through hole 41111; the junction box also includes a first fastener, which passes through the terminal hole 511 and the through hole 41111 in sequence and is connected to the threaded hole 41211, so as to electrically connect the connector 5 to the first conductive member 41.

[0087] In the embodiment of the present application, since the nut column 4121 has a threaded hole 41211, the first conductive body 4111 of the conductive body 411 is provided with a through hole 41111, the connecting terminal 51 is provided with a terminal hole 511, and the positions of the threaded hole 41211, the through hole 41111 and the terminal hole 511 correspond. In this way, the first fastener sequentially penetrates the terminal hole 511 and the through hole 41111 and is connected to the threaded hole 41211, so that the connector 5 and the first conductive member 41 can be connected. In one embodiment, the first fastener is a screw.

[0088] like Figure 6 and Fig.10 As shown, an arc-shaped guide piece 41112 is provided at the edge of the conductive body 411 close to the connector 5. Along the extension direction of the arc-shaped guide piece 41112, the arc-shaped guide piece 41112 includes a connecting section and an engaging section which are arranged in sequence. The connecting section is close to the conductive body 411; the connecting section is connected to the conductive body 411; the engaging section extends in a direction away from the conductive body 411 and is embedded in the first bottom wall 11.

[0089] In the embodiment of the present application, since an arc-shaped guide 41112 is provided at the edge of the conductive body 411 close to the connector 5, the connecting section of the arc-shaped guide 41112 is connected to the conductive body 411, and the engaging section of the arc-shaped guide 41112 is embedded in the first bottom wall 11. In this way, on the one hand, the insulating box body 1 is provided with a first connecting hole 121, and when the connector 5 is plugged into the first connecting hole 121, the connecting terminal 51 will first contact the arc-shaped guide 41112, and complete the plugging under the guidance of the arc-shaped guide 41112, thereby avoiding the problem of the connecting terminal 51 colliding with the connecting member 412 during the violent plugging process, causing damage to the connecting terminal 51. On the other hand, since the engaging section is embedded in the first bottom wall 11, the connection strength between the first conductive member 41 and the insulating box body 1 can be improved.

[0090] It should be noted that the number of arc-shaped guide members 41112 is consistent with the number of connectors 5, and one arc-shaped guide member 41112 corresponds to one connector 5, so as to guide the connection terminal 51 of the connector 5, which is beneficial to improve the plugging convenience of the connector 5. In one embodiment, the arc-shaped guide member 41112 is dovetail-shaped, specifically, along the extension direction perpendicular to the arc-shaped guide member 41112, the width of the connecting section is smaller than the width of the fitting section, so that the pulling force of the arc-shaped guide member 41112 can be increased, which is beneficial to further improve the connection strength between the first conductive member 41 and the insulating box body 1.

[0091] In some optional embodiments of the present application, the junction box further includes an insulating layer 6 , and the insulating layer 6 is bonded to the inner surface of the metal upper cover 2 .

[0092] In the embodiment of the present application, since the inner surface of the metal cover 2 is bonded with an insulating layer 6, the insulating layer 6 has good insulation performance, which can reduce the required safety distance between the conductive part 4 and the metal cover 2, that is, the overall height of the junction box can be reduced. It should be noted that the inner surface of the metal cover 2 refers to the surface close to the insulating box body 1 and corresponding to the installation cavity 3. In one embodiment, the insulating layer 6 is insulating paper, and the material of the insulating paper includes but is not limited to polypropylene or other materials with good electrical insulation properties.

[0093] In some optional embodiments of the present application, the insulating box body 1 includes a first bottom wall 11 , a support column 112 is provided on the first bottom wall 11 , and a first gap is formed between an end of the support column 112 away from the first bottom wall 11 and the insulating layer 6 .

[0094] In the embodiment of the present application, on the one hand, due to the provision of the support column 112, when the metal upper cover 2 is deformed and sunken under pressure, it will not press the conductive member 4 in the installation cavity 3, such as the fuse 43, which can effectively avoid damage to the conductive member 4, which is conducive to improving the safety of the junction box. On the other hand, since there is a first gap between the support column 112 and the insulating layer 6, that is, the support column 112 does not contact the insulating layer 6, it can avoid the problem that the support column 112 damages the insulating layer 6, resulting in the problem of affecting the electrical performance.

[0095] It should be noted that the support column 112 of the embodiment of the present application is set away from the conductive member 4, and can be set alone or in multiples, which is not limited here. It is understandable that when multiple support columns 112 are set, the multiple support columns 112 should be dispersed as evenly as possible to improve the support reliability of the support columns 112 on the metal cover 2. In addition, the embodiment of the present application does not limit the specific value of the first gap, and those skilled in the art can adjust it according to actual needs. In one embodiment, four support columns 112 are provided, and the four support columns 112 are dispersed on the first bottom wall 11 and away from the conductive member 4. The first gap between the support column 112 and the insulating layer 6 is 0.2 mm.

[0096] like Fig.11 As shown, the insulating box body 1 includes a first side wall 12; the junction box also includes a waterproof breathable valve 8, which is arranged on the first side wall 12 to connect the installation cavity 3 with the external space.

[0097] Specifically, the first side wall 12 is provided with a second connection hole 122 , the waterproof breathable valve 8 is clamped in the second connection hole 122 , and a second sealing ring 81 is provided between the second connection hole 122 and the breathable valve to seal the waterproof breathable valve 8 to the insulating box body 1 .

[0098] During the use of the junction box, the heat generated by the conductive part 4 will cause the air in the installation cavity 3 to expand due to the heat, resulting in an increase in the pressure in the installation cavity 3; especially when the fuse 43 explodes abnormally, the pressure in the installation cavity 3 increases sharply. If the pressure is not relieved in time, it may cause the junction box to explode. In the embodiment of the present application, since the side wall of the insulating box body 1 is provided with a waterproof breathable valve 8, the waterproof breathable valve 8 is connected to the installation cavity 3. In this way, when the pressure in the installation cavity 3 exceeds the set pressure threshold, the pressure can be relieved through the waterproof breathable valve 8 to avoid the junction box from exploding. In addition, the waterproof breathable valve 8 can also prevent external water vapor from entering the junction box, thereby improving the waterproof performance of the junction box, which is beneficial to improving the safety of the use of the junction box.

[0099] In some optional embodiments of the present application, the junction box further includes a first sealing ring 7, which is disposed between the metal upper cover 2 and the insulating box body 1. Specifically, the insulating box body 1 is provided with a mounting groove, and the first sealing ring 7 is disposed in the mounting groove.

[0100] In the embodiment of the present application, since a first sealing ring 7 is provided between the metal upper cover 2 and the insulating box body 1, when the metal upper cover 2 is connected to the insulating box body 1, the metal upper cover 2 can compress the first sealing ring 7, thereby achieving sealing of the junction box, which is beneficial to improving the waterproof and dustproof performance of the junction box. The material of the first sealing ring 7 includes but is not limited to silicone rubber.

[0101] In some optional embodiments of the present application, the insulating box body 1 is provided with a first connecting hole 121, and the hole wall of the first connecting hole 121 is provided with one of the anti-error boss 52 or the anti-error groove 1211; the junction box also includes a connector 5, the connector 5 is plugged into the first connecting hole 121, and the connector 5 is provided with one of the anti-error boss 52 or the anti-error groove 1211 at a position corresponding to the first connecting hole 121, and the anti-error boss 52 is engaged with the anti-error groove 1211.

[0102] In the embodiment of the present application, since the hole wall of the first connection hole 121 is provided with one of the anti-mistake boss 52 or the anti-mistake groove 1211, the connector 5 is provided with the other of the anti-mistake boss 52 or the anti-mistake groove 1211, when the connector 5 is plugged into the first connection hole 121, the anti-mistake boss 52 is engaged with the anti-mistake groove 1211. In this way, it can be ensured that each connector 5 is correctly plugged in, avoiding safety accidents caused by wrong connection during installation or maintenance, which is conducive to improving the safety of the junction box.

[0103] It should be noted that the drawings shown in the embodiments of the present application only show the case where the anti-error groove 1211 is provided on the hole wall of the first connection hole 121 and the anti-error boss 52 is provided on the connector 5. In actual applications, those skilled in the art may also provide the anti-error groove 1211 on the connector 5 and the anti-error boss 52 on the hole wall of the first connection hole 121, and the embodiments of the present application do not limit this. In addition, when the junction box is provided with a plurality of connectors 5, the positions of the anti-error bosses 52 or anti-error grooves 1211 on different connectors 5 should be different. In this way, only when the connector 5 corresponds to the anti-error boss 52 and the anti-error groove 1211 of the first connection hole 121, can the connector 5 be plugged into the corresponding first connection hole 121, which is conducive to improving the assembly convenience and safety of the junction box.

[0104] In practical applications, for easy identification, the embodiment of the present application can also set corresponding text labels on the anti-error boss 52 and the anti-error groove 1211. In one embodiment, the anti-error boss 52 and the anti-error groove 1211 of the air conditioner connector are respectively marked with the letter "A", the anti-error boss 52 and the anti-error groove 1211 of the electronic continuously variable transmission system connector are respectively marked with the letter "B", the anti-error boss 52 and the anti-error groove 1211 of the positive temperature coefficient heater connector are respectively marked with the letter "C", and the anti-error boss 52 and the anti-error groove 1211 of the on-board charger connector are respectively marked with the letter "D".

[0105] In a specific application, the first connection hole 121 of the embodiment of the present application can be a waist-shaped hole, and the width direction of the waist-shaped hole is parallel to the height direction of the junction box, that is, the first direction X, so that the overall height of the junction box can be reduced. In addition, connecting parts are provided at both ends of the connector 5, and screws are passed through the connecting parts along the height direction of the junction box and connected to the insulating box body 1.

[0106] In summary, the junction box provided in the embodiment of the present application has at least the following advantages:

[0107] In the embodiment of the present application, the junction box includes: an insulating box body and a metal cover; the outer surface of the insulating box body is provided with a shielding conductive layer; the metal cover is covered on the insulating box body and in contact with the shielding conductive layer, and the metal cover and the insulating box body are enclosed to form an installation cavity. In this way, since an insulating box body is provided, on the one hand, compared with metal materials, insulating materials usually have a smaller density, that is, compared with the metal box body of the prior art, the insulating box body used in the present application has a lighter weight, thereby reducing the weight of the junction box; on the other hand, the conductive parts of the junction box can be directly installed in the insulating box body, and there is no need to additionally set up an insulating mounting seat, thereby further reducing the weight of the junction box, which is beneficial to the lightweight design of the vehicle. In addition, since the outer surface of the insulating box body is provided with a shielding conductive layer, and the shielding conductive layer is in contact with the metal cover, a closed shielding space can be formed, so that the junction box meets the electromagnetic shielding requirements, which is beneficial to improving the safety performance of the vehicle.

[0108] An embodiment of the present application further provides a vehicle, the vehicle comprising the junction box described in any one of the above embodiments.

[0109] It should be noted that in the embodiment of the present application, the structure of the junction box is the same as the structure of the junction box described in any of the above embodiments, and its beneficial effects are also similar, which will not be repeated here.

[0110] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0111] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A junction box, characterized in that: The junction box comprises: an insulating box body and a metal upper cover; The outer surface of the insulating box body is provided with a shielding conductive layer; The metal upper cover is covered on the insulating box body and is in contact with the shielding conductive layer, and the metal upper cover and the insulating box body are enclosed to form an installation cavity; The junction box further comprises a connector, and the connector is connected to the insulating box body; The connector is provided with a metal shell, and the metal shell is in contact with the shielding conductive layer; The connector further includes a cable, at least a portion of which is disposed within the metal housing; The cable is provided with a shielding layer, and the shielding layer located in the metal shell is in contact with the metal shell; The insulating box body comprises a first bottom wall; The junction box further includes a first conductive member, which is disposed in the installation cavity, and at least a portion of the first conductive member is embedded in the first bottom wall; The first conductive member comprises: a conductive body and a connecting member; At least a portion of the conductive body is bent toward the first bottom wall and embedded in the first bottom wall; Along the extension direction of the connecting member, the connecting member includes a first end and a second end which are arranged away from each other, the first end is connected to the conductive body, and the second end is embedded in the first bottom wall.

2. The junction box according to claim 1, characterized in that: The shielding conductive layer is an electroplating layer.

3. The junction box according to claim 1, characterized in that: The conductive body comprises a first conductive body and a second conductive body connected to each other, and the second conductive body is embedded in the first bottom wall; The first end is connected to the first conductive body.

4. The junction box according to claim 3, characterized in that: The first bottom wall is provided with a heat dissipation hole at a position corresponding to the second conductive body.

5. The junction box according to claim 1, characterized in that: The connecting member comprises a nut column and a cap which are sequentially arranged along a first direction, and the cap is arranged at the second end of the connecting member; One end of the nut column facing away from the cover cap is fixedly connected to the conductive body, and one end of the nut column close to the cover cap is connected to the cover cap; The cover cap and at least a portion of the nut column are embedded in the first bottom wall.

6. The junction box according to claim 5, characterized in that: The peripheral wall of the nut column is provided with an annular groove, and the annular groove is embedded in the first bottom wall; And / or, a mounting groove is provided on one side of the cover cap close to the nut column, and the nut column is embedded in the mounting groove.

7. The junction box according to claim 6, characterized in that: A convex rib is arranged on the inner side of the installation groove so that the nut column can be interference-fitted in the installation groove.

8. The junction box according to claim 5, characterized in that: The junction box further comprises a connector, which is connected to the insulating box body. A connecting terminal is arranged in the connector, and the connecting terminal extends into the installation cavity and is electrically connected to the conductive body.

9. The junction box according to claim 8, characterized in that: The nut column has a threaded hole, and the conductive body is provided with a conducting hole at a position corresponding to the threaded hole; The connecting terminal is arranged on a side of the conductive body away from the nut column, and the connecting terminal is provided with a terminal hole at a position corresponding to the conducting hole; The junction box further includes a first fastener, which sequentially passes through the terminal hole and the conducting hole and is connected to the threaded hole, so as to electrically connect the connector to the first conductive member.

10. The junction box according to claim 8, characterized in that: An arc-shaped guide is provided at the edge of the conductive body close to the connecting terminal. Along the extension direction of the arc-shaped guide, the arc-shaped guide comprises a connecting section and a fitting section which are arranged in sequence. The connecting section is close to the conductive body. The connecting section is connected to the conductive body; The embedding section extends in a direction away from the conductive body and is embedded in the first bottom wall.

11. The junction box according to claim 1, characterized in that: The junction box also includes an insulating layer, which is bonded to the inner surface of the metal upper cover.

12. The junction box according to claim 11, characterized in that: The insulating box body comprises a first bottom wall, a supporting column is arranged on the first bottom wall, and a first gap is formed between an end of the supporting column away from the first bottom wall and the insulating layer.

13. The junction box according to claim 1, characterized in that: The insulating box body comprises a first side wall; The junction box further includes a waterproof breathable valve, which is arranged on the first side wall to connect the installation cavity with the external space.

14. The junction box according to claim 1, characterized in that: The junction box further comprises a first sealing ring, which is arranged between the metal upper cover and the insulating box body.

15. The junction box according to claim 1, characterized in that: The insulating box body is provided with a first connecting hole, and the hole wall of the first connecting hole is provided with one of an anti-mistake boss or an anti-mistake groove; The junction box also includes a connector, which is plugged into the first connecting hole. The connector is provided with the anti-error boss or the anti-error groove at a position corresponding to the first connecting hole, and the anti-error boss is engaged with the anti-error groove.

16. A vehicle, characterized in that: The vehicle comprises the junction box according to any one of claims 1-15.

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