Junction box, electrical equipment and electric automobile

Abstract

The utility model discloses a junction box, electrical equipment and an electric automobile, and relates to the technical field of connectors, the junction box comprises a box body and a power connection portion, the box body is provided with an installation cavity, a first connection port and a second connection port, the first connection port and the second connection port are communicated with the installation cavity, and the box body is further provided with an insertion portion; the power connection part is provided with a first end and a second end which are oppositely arranged, the first end of the power connection part extends outwards from the first connection port, the second end of the power connection part is arranged corresponding to the second connection port and is used for being welded with a cable, and the box body can be fixed on a machine shell by installing the insertion part arranged on the box body in the installation hole; the first end of the power connection part can be accurately positioned, current conduction can be realized by welding after the welding spots on the circuit board correspond to the first end of the power connection part, screw connection is not needed, assembly is simple, no requirement for space on the board is needed, a large installation gap does not need to be reserved, and the small size of the product is facilitated.

Description

Technical Field

[0001] This utility model relates to the field of connector technology, and in particular to a junction box, electrical equipment, and electric vehicle. Background Technology

[0002] Currently, the interconnection between the power supply (OBC / DCDC) and motor controller circuit boards of new energy electric vehicles mostly uses screw connections to OT terminals. This involves setting OT terminals at the end of the cable, connecting the connection holes on the OT terminals to the screw holes on the circuit board using screws. Tightening the screws requires significant board space and axial installation space, resulting in a larger installation clearance in the product, which is not conducive to miniaturization. Furthermore, using multiple screws for fixing is cumbersome and time-consuming, hindering production and requiring an automated screw-fixing station, leading to higher overall costs. Utility Model Content

[0003] The main purpose of this utility model is to propose a junction box, electrical equipment, and electric vehicle, which aims to solve the problem that the method of connecting circuit boards by screwing OT terminals is complicated to assemble, requires axial installation space, and is not conducive to miniaturization of the product.

[0004] To achieve the above objectives, the junction box proposed in this utility model includes:

[0005] The housing has a mounting cavity, and a first connection port and a second connection port communicating with the mounting cavity; and,

[0006] A power receiving part is installed in the mounting cavity. The power receiving part has a first end and a second end that are arranged opposite to each other. The first end of the power receiving part extends outward from the first connection port for soldering to a circuit board. The second end of the power receiving part is arranged corresponding to the second connection port for soldering to a cable.

[0007] In one embodiment, the housing has a first end and a second end arranged opposite to each other. The first end of the housing is provided with the first connection port, and the second end of the housing is provided with a plug-in portion for insertion into a mounting hole of the housing.

[0008] In one embodiment, the insertion portion includes a main body protruding from the box body and a buckle portion protruding from the peripheral side of the main body.

[0009] In one embodiment, the fastener includes a retaining arm extending outward from the peripheral side of the body, the retaining arm being inclined toward the box body in a direction away from the body.

[0010] In one embodiment, the insertion portion further includes a guide protrusion protruding from the main body, the guide protrusion being located on the side of the buckle portion away from the box body.

[0011] In one embodiment, one of the power receiving part and the housing is provided with a positioning protrusion, and the other is provided with a positioning hole.

[0012] In one embodiment, a limiting part is further provided in the mounting cavity between the first connection port and the second connection port, and the limiting part is provided with a limiting hole for the power receiving part to pass through.

[0013] In one embodiment, at least two limiting parts are provided, and the two limiting parts are arranged at intervals, wherein one limiting part limits the first end of the power receiving part, and the other limiting part limits the second end of the power receiving part.

[0014] In one embodiment, the power receiving part and the first connection port are transitionally fitted.

[0015] In one embodiment, the box body includes two shells, and a snap-fit ​​structure is provided between the two shells so that the two shells are fixedly enclosed to form the mounting cavity.

[0016] In one embodiment, the contact portion includes two conductive bars, and the snap-fit ​​structure is located between the two conductive bars.

[0017] This utility model also provides an electrical device, the electrical device comprising:

[0018] A housing, wherein mounting holes are provided on the housing;

[0019] The first circuit board is located inside the housing and has solder joints on it;

[0020] Cables, and,

[0021] A junction box, wherein the first end of the power receiving part is welded to the welding point, and the second end of the power receiving part is welded to one end of the cable;

[0022] The junction box includes:

[0023] The housing has a mounting cavity, and a first connection port and a second connection port communicating with the mounting cavity. The housing also has a plug-in portion for insertion into a mounting hole in the casing.

[0024] A power receiving part is installed in the mounting cavity. The power receiving part has a first end and a second end that are arranged opposite to each other. The first end of the power receiving part extends outward from the first connection port for soldering to a circuit board. The second end of the power receiving part is arranged corresponding to the second connection port for soldering to a cable.

[0025] In one embodiment, the electrical equipment further includes a second circuit board disposed within the housing, the second circuit board having a connection portion;

[0026] The other end of the cable is provided with a power terminal, which is plugged into the connector.

[0027] This utility model also proposes an electric vehicle, the electric vehicle including electrical equipment, the electrical equipment including a junction box, the junction box including:

[0028] The housing has a mounting cavity, and a first connection port and a second connection port communicating with the mounting cavity. The housing also has a plug-in portion for insertion into a mounting hole in the casing.

[0029] A power receiving part is installed in the mounting cavity. The power receiving part has a first end and a second end that are arranged opposite to each other. The first end of the power receiving part extends outward from the first connection port for soldering to a circuit board. The second end of the power receiving part is arranged corresponding to the second connection port for soldering to a cable.

[0030] In the technical solution of this utility model, the power receiving part is installed in the mounting cavity, and the first end of the power receiving part is exposed outside the first interface. By installing the plug-in part provided on the box body into the mounting hole, the box body can be fixed on the housing. The first end of the power receiving part can be accurately positioned. By welding the solder points on the circuit board to correspond with the first end of the power receiving part, the current can be conducted without the need for screw connection. The assembly is simple, and there is no need for board space or large installation gaps, which is conducive to the miniaturization of the product. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0032] Figure 1 A schematic diagram of the structure of an embodiment of the junction box provided by this utility model;

[0033] Figure 2 for Figure 1 A schematic diagram of the middle box;

[0034] Figure 3 for Figure 1 A schematic diagram of the junction box and cables in the diagram;

[0035] Figure 4 for Figure 1 A schematic diagram of the junction box, cables, and first circuit board.

[0036] Figure 5 A schematic diagram of the structure of an embodiment of the electrical equipment provided by this utility model;

[0037] Figure 6 for Figure 5 A schematic diagram of the junction box, cables, and electrical terminals.

[0038] Explanation of icon numbers:

[0039] 100. Junction box; 1. Box body; 10. Housing; 1a. First connection port; 1b. Second connection port; 11. Plug-in part; 111. Main body; 112. Buckle part; 113. Guide protrusion; 12. Limiting part; 12a. Limiting hole; 2. Connecting part; 20. Conductive busbar; 21. First end of connecting part; 22. Second end of connecting part; 31. Positioning protrusion; 32. Positioning hole; 4. Snap-fit ​​structure;

[0040] 200. Electrical equipment; 5. Housing; 5a. Mounting hole; 6. First circuit board; 7. Cable; 8. Second circuit board; 81. Connecting part; 9. Electrical terminal.

[0041] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0042] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0043] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0044] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0045] Currently, the interconnection between the power supply (OBC / DCDC) and motor controller circuit boards of new energy electric vehicles mostly uses screw connections to OT terminals. This involves setting OT terminals at the end of the cable, connecting the connection holes on the OT terminals to the screw holes on the circuit board using screws. Tightening the screws requires significant board space and axial installation space, resulting in a larger installation clearance in the product, which is not conducive to miniaturization. Furthermore, using multiple screws for fixing is cumbersome and time-consuming, hindering production and requiring an automated screw-fixing station, leading to higher overall costs.

[0046] This utility model proposes a junction box to solve the problem that the method of connecting circuit boards by screwing OT terminals is complicated to assemble, requires axial installation space, and is not conducive to the miniaturization of products.

[0047] Please see Figures 1 to 4 In one embodiment of the present invention, the junction box 100 includes a box body 1 and a power receiving part 2. The box body 1 has a mounting cavity and a first connection port 1a and a second connection port 1b communicating with the mounting cavity. The power receiving part 2 is installed in the mounting cavity and has a first end and a second end arranged opposite to each other. The first end 21 of the power receiving part extends outward from the first connection port 1a to be soldered to a circuit board, and the second end 22 of the power receiving part is arranged corresponding to the second connection port 1b for soldering to a cable 7.

[0048] It is understandable that the housing 1 is the main structural component of the junction box 100, and the housing 1 serves as a protective shell for its internal components. The housing 1 has a mounting cavity for accommodating other components such as the electrical connection part 2.

[0049] Of course, the size setting of box 1 also makes it easier to meet safety standards.

[0050] The mounting cavity is located within the housing 1 and is used to house the electrical connection part 2 and other electrical connections that may require protection.

[0051] Both the first connection port 1a and the second connection port 1b are connected to the mounting cavity, allowing the power connection part 2 to make electrical connections with other external circuit boards or cables 7.

[0052] It should be noted that the electrical contact part 2 is generally a metal strip or sheet used to transmit current.

[0053] The second end 22 of the power receiving part is provided corresponding to the second connection port 1b. That is to say, the second end 22 of the power receiving part can extend outward from the second connection port 1b and be welded to the cable 7. Of course, the second end 22 of the power receiving part can also be provided in the mounting cavity, and the cable 7 passes through the second connection port 1b and is welded to the second end 22 of the power receiving part in the mounting cavity. The preferred welding method is ultrasonic welding, but other possible welding methods can also be used. The specific method can be determined according to the actual situation. This specification does not limit this embodiment.

[0054] The current-contacting part 2 is a conductive element that transmits current. The current-contacting part 2 is housed within the mounting cavity and has two terminals:

[0055] First end: This end extends from the first connector 1a and is directly soldered to a solder joint on a circuit board.

[0056] The second end is located near the second connection port 1b to facilitate welding to one end of the cable, thereby establishing a second electrical connection point.

[0057] It should also be noted that the first end 21 of the power-connecting part is soldered to the circuit board. The soldering can be done by wave soldering. During the wave soldering process, the entire or partially assembled circuit board passes through a wave of molten solder, thereby connecting the first end 21 of the power-connecting part to the pads on the circuit board.

[0058] Please refer to the following when assembling: Figure 3 First, solder cable 7 to the second end 22 of the power connector. Then, insert the junction box 100 into the mounting hole 5a of the housing 5 to fix the junction box 100, thereby determining the position of the first end 21 of the power connector. Then, solder the solder points on the circuit board to the first end 21 of the power connector. Please refer to [link to relevant documentation]. Figure 4 .

[0059] In the technical solution of this utility model, the power receiving part 2 is installed in the mounting cavity, and the first end 21 of the power receiving part is exposed outside the first interface. By installing the plug-in part 11 provided on the box body 1 into the mounting hole 5a, the box body 1 can be fixed on the housing 5. The first end 21 of the power receiving part can be accurately positioned. By welding the solder points on the circuit board to correspond with the first end 21 of the power receiving part, the current can be conducted without the need for screw connection. The assembly is simple and does not require space on the board. There is no need to reserve a large installation gap, which is conducive to the miniaturization of the product.

[0060] Specifically, please refer to Figure 1 In this embodiment, the box body 1 has a first end and a second end that are arranged opposite to each other. The first end of the box body 1 is provided with a first connection port 1a, and the second end of the box body 1 is provided with a plug-in part 11 for plugging into the mounting hole 5a of the housing 5.

[0061] The box 1 has two opposite ends. When the first end of the box 1 is the top, the second end of the box 1 refers to the bottom of the box 1.

[0062] The connector 11 is for easy attachment of the entire junction box 100 to another device (such as housing 5). By inserting the connector 11 into the corresponding mounting hole 5a on the housing 5, a secure and quick assembly process can be achieved.

[0063] Thus, when the insertion part 11 is located at the bottom of the housing 1, it is convenient to press the housing 1 down and install it on the casing 5.

[0064] A first connection port 1a is provided on the top of the housing 1, so that the top end of the power connection part 2 extends from the top of the housing 1 to be soldered to the circuit board located above.

[0065] By placing the end requiring welding at a point away from the connector 11, automated welding equipment can more easily access the welding point, thereby improving production efficiency and consistency. Simultaneously, it avoids operational inconvenience caused by proximity to the connector 11 during the welding process.

[0066] During maintenance, the junction box 100 can be more easily operated during installation or removal without interfering with completed soldering work due to its proximity to solder joints. If circuit board replacement or repair is required, the solder joints can be more easily accessed without removing the entire junction box 100.

[0067] Further, please refer to Figure 2 In this embodiment, the insertion part 11 includes a main body 111 protruding from the box body 1 and a buckle part 112 protruding from the peripheral side of the main body 111.

[0068] It should be noted that the main body 111 is the main part of the insertion part 11, and the main body 111 protrudes outward from the second end of the housing 1. The main body 111 has high strength, and its shape and size are designed to fit tightly with the mounting hole 5a on the housing 5.

[0069] The latch 112 refers to one or more small parts provided on the side of the main body 111. The function of the latch 112 is to provide a locking mechanism after the plug 11 is inserted into the mounting hole 5a, preventing the junction box 100 from easily falling off. The latch 112 is designed to have a certain degree of elasticity, so that it can be compressed or deformed when inserted, and then return to its original shape after being fully inserted, thereby locking the edge of the mounting hole 5a.

[0070] The latch 112 protrudes from the peripheral side of the main body 111, rather than from the top or bottom. The plug 11 can slide along the inner wall of the mounting hole 5a during insertion until it reaches the predetermined position, at which point the latch 112 comes into play, ensuring that the junction box 100 is securely fixed in place.

[0071] Specifically, please refer to Figure 2 In one embodiment, the buckle 112 includes a retaining arm extending outward from the peripheral side of the main body 111, the retaining arm being inclined in a direction away from the main body 111 toward the box body 1.

[0072] It is understandable that the retaining arm is the part that extends outward from the circumferential side (i.e., side) of the main body 111 of the insertion part 11. When multiple retaining arms are provided, the multiple retaining arms are distributed along the circumferential direction of the main body 111.

[0073] The holding arm is tilted in the direction away from the main body 111 and towards the box body 1, and the holding arm is bent towards the box body 1.

[0074] With this configuration, when the plug part 11 is inserted into the mounting hole 5a, the inclined retaining arms have a certain guiding effect, making it easier for them to enter the hole, because they will be slightly compressed or deformed as they are inserted.

[0075] Furthermore, when the plug part 11 is fully inserted, the retaining arm will return to its original shape. Due to its tilted setting, the retaining arm will form a blocking effect at the edge of the mounting hole 5a, preventing the junction box 100 from being easily pulled out.

[0076] Understandably, the retaining arm is made of a material with a certain degree of elasticity, allowing for appropriate deformation during insertion and restoring its shape to maintain a good locking effect after installation. By utilizing the elastic properties of the material, quick and reliable installation is achieved, resulting in a simple structure that is easy to install and provides a long-term stable connection under various environmental conditions.

[0077] For further information, please refer to [link / reference]. Figure 2 In this embodiment, the insertion part 11 further includes a guide protrusion 113 protruding from the main body 111, and the guide protrusion 113 is located on the side of the buckle part 112 away from the box body 1.

[0078] It is understood that the guide protrusion 113 protrudes from the main body 111, and the guide protrusion 113 is a structure that protrudes from the surface of the main body 111 of the insertion part 11.

[0079] The guide protrusion 113 is located on the side of the buckle 112 away from the box body 1. The guide protrusion 113 is located on the main body 111 of the insertion part 11 near the front end, that is, on the side of the buckle 112 opposite to the box body 1.

[0080] Because the guide protrusion 113 is located at the front end of the insertion part 11, it contacts the opening of the mounting hole 5a first when the insertion part 11 enters the mounting hole 5a, thus ensuring that the insertion part 11 moves along the correct axis. If the insertion part 11 does not have the guide protrusion 113, slight offset or tilting may occur during insertion, causing the retaining arm to fail to enter or lock smoothly. The guide protrusion 113 prevents this from happening because it provides stable guidance and a clear alignment point at the initial stage of insertion, ensuring that the insertion part 11 enters the mounting hole 5a in the correct manner, thereby avoiding misalignment or damage.

[0081] With this design, the presence of the guide protrusion 113 simplifies the assembly process for the operator, reduces the need for repeated adjustments due to misalignment, and improves assembly efficiency and accuracy.

[0082] Furthermore, in order to enable the electrical connection part 2 to be quickly positioned when assembled with the housing 1, please refer to... Figure 1 In this embodiment, one of the power receiving part 2 and the housing 1 is provided with a positioning protrusion 31, and the other is provided with a positioning hole 32.

[0083] The positioning protrusion 31 is a small cylindrical or conical protrusion used to insert into the corresponding positioning hole 32. The positioning protrusion 31 can be provided on the power receiving part 2 or on the housing 1.

[0084] The positioning hole 32 is a small hole that matches the positioning protrusion 31 and is used to receive the positioning protrusion 31. If the positioning protrusion 31 is provided on the power receiving part 2, then the positioning hole 32 is provided on the housing 1; and vice versa.

[0085] The positioning hole 32 and the positioning protrusion 31 have a precise positional correspondence to ensure that once the electrical contact part 2 is inserted into the positioning hole 32 through the positioning protrusion 31, it can be in the correct position and will not move.

[0086] The cooperation of the positioning protrusion 31 and the positioning hole 32 ensures that the electrical connection part 2 can be accurately aligned with its proper position during installation, preventing the electrical connection part 2 from shifting or misaligning during installation, ensuring that each component is installed in place according to the design requirements, thereby guaranteeing the reliability of the electrical connection.

[0087] Furthermore, the design of the positioning protrusion 31 and positioning hole 32 makes the assembly process simpler and more intuitive, reduces errors in manual operation, ensures consistency in each assembly, and improves production efficiency.

[0088] Furthermore, in order to ensure that the power connection part 2 can be installed more stably inside the housing 1, please refer to... Figure 1 In this embodiment, a limiting part 12 located between the first connection port 1a and the second connection port 1b is also provided in the mounting cavity, and a limiting hole 12a for the power connection part 2 to pass through is provided on the limiting part 12.

[0089] A limiting part 12 is disposed within the mounting cavity and located between the first connection port 1a and the second connection port 1b. The limiting part 12 is positioned at a certain point along the path of the power receiving part 2 from one end to the other. A limiting hole 12a is formed on the limiting part 12 to allow the power receiving part 2 to pass through, thereby limiting the position of the power receiving part 2 and ensuring its proper alignment and fixation within the mounting cavity.

[0090] It is understood that the limiting part 12 can be a protruding rib protruding from the inner wall of the box body 1, or a partition set in the box body 1. Of course, it can also be a separate component installed in the box body 1, or other possible shapes can be adopted. The specific shape can be determined according to the actual situation. This specification does not limit this embodiment.

[0091] By passing the contact part 2 through the limiting hole 12a, the position of the contact part 2 within the mounting cavity can be precisely controlled, ensuring that the contact part 2 can be accurately placed in the predetermined position and preventing it from moving or shifting. This maintains a stable relative position between the contact part 2 and the first connection port 1a and the second connection port 1b, thereby ensuring the reliability and consistency of the electrical connection.

[0092] By inserting the electrical contact 2 through the limiting hole 12a, the assembly process becomes more intuitive and simple. The operator only needs to pass the electrical contact 2 through the limiting hole 12a to complete the positioning, without the need for additional adjustment steps. This improves the assembly efficiency of the product and enhances the quality and durability of the final product.

[0093] For further information, please refer to [link / reference]. Figure 1 In this embodiment, at least two limiting parts 12 are provided, and the two limiting parts 12 are arranged at intervals. One limiting part 12 limits the first end 21 of the electrode part, and the other limiting part 12 limits the second end 22 of the electrode part.

[0094] The spaced distribution of multiple limiting portions 12 helps to limit the first end 21 of the contact portion 2 along its entire length. One limiting portion 12 is used to limit the first end 21 of the contact portion. A limiting hole 12a on this limiting portion 12 allows the first end 21 of the contact portion to pass through and ensures that it is fixed in the correct position. Another limiting portion 12 is used to limit the second end 22 of the contact portion. Similarly, a limiting hole 12a on this limiting portion 12 allows the second end 22 of the contact portion to pass through and ensures that its position is fixed.

[0095] By providing limiting parts 12 at both ends of the power connection part 2, the stability of the power connection part 2 within the mounting cavity can be improved, providing uniform support and positioning and preventing it from moving or shifting during use. Each limiting part 12 helps ensure the precise alignment of the power connection part 2 in its predetermined position, thereby guaranteeing the reliability of the electrical connection.

[0096] For further information, please refer to [link / reference]. Figure 1 There is a transition fit between the electrical connection part 2 and the first connection port 1a.

[0097] Understandably, a transition fit refers to the dimensional relationship between a hole and a shaft (or similar component) that allows them to be freely assembled together while still providing a certain degree of clamping force. In this fit, the minimum limit size of the hole is greater than or equal to the maximum limit size of the shaft, while the maximum limit size of the hole is less than or equal to the minimum limit size of the shaft.

[0098] By transitioning the connection between the electrical contact 2 and the first connection port 1a, the electrical contact 2 can be easily assembled and disassembled without the need for additional tools or force. Furthermore, after assembly, the housing 1 can form a slight tightening force to prevent the components from loosening due to vibration or other external forces.

[0099] A transition fit ensures a tight connection between the electrical contact 2 and the first connection port 1a, improving the stability and reliability of electrical performance. Compared to a clearance fit, a transition fit reduces the risk of loosening due to vibration and other factors. This achieves both precise positioning and reliable electrical connection while maintaining a degree of flexibility and ease of maintenance.

[0100] Furthermore, for ease of assembly, please refer to [link / reference]. Figure 1 In this embodiment, the box body 1 includes two shells 10, and a snap-fit ​​structure 4 is provided between the two shells 10 so that the two shells 10 are fixedly enclosed to form an installation cavity.

[0101] It is understandable that the box 1 consists of two independent shells 10, which together constitute the external structure of the junction box 100 and form a closed space, namely the mounting cavity, after assembly.

[0102] The snap-fit ​​structure 4 is set at the connection between the two housings 10. It can be understood that the snap-fit ​​structure 4 can be a snap protrusion and a snap groove, or a snap hook and a snap hook, etc. Of course, other possible forms can also be used. The specific form can be determined according to the actual situation. This specification does not limit this embodiment.

[0103] The snap-fit ​​structure 4 allows the two housings 10 to be securely assembled together, forming a single unit. The snap-fit ​​structure 4 facilitates quick assembly of the two housings 10 by the operator, and also allows for easy disassembly when the housing 1 needs to be opened for maintenance or replacement of internal components.

[0104] Using the snap-fit ​​structure 4 simplifies the manufacturing process and reduces assembly time. The junction box 100 enables quick and easy assembly while maintaining good mechanical strength and sealing performance.

[0105] Further, please refer to Figure 1 In this embodiment, the electrical contact part 2 includes two conductive bars 20, and the snap-fit ​​structure 4 is located between the two conductive bars 20.

[0106] The snap-fit ​​structure 4 is not only used to fix and connect the two housings 10, but also serves to separate the two conductive bars 20.

[0107] It should be noted that since the snap-fit ​​structure 4 is usually made of insulating material, it provides a layer of physical isolation between the two conductive bars 20, preventing them from making direct contact and avoiding short circuits and other electrical faults.

[0108] Because the snap-fit ​​structure 4 is set between the two conductive bars 20, the snap-fit ​​structure 4 can define the limiting hole 12a through which the power supply part 2 passes between the snap-fit ​​structure 4 and the inner wall of the box 1. The snap-fit ​​structure 4 can also provide additional mechanical support for the conductive bars 20, increase their stability in the mounting cavity, and reduce movement caused by vibration or other external forces.

[0109] The two conductive bars 20 are separated by a snap-fit ​​structure 4 to provide electrical isolation, mechanical support, spacing maintenance, and simplified assembly. This not only improves product safety but also enhances its mechanical stability and long-term reliability.

[0110] This utility model also proposes an electrical device 200, please refer to [reference needed]. Figure 5 and Figure 6The electrical device 200 includes a housing 5, a first circuit board 6, a cable 7, and a junction box 100. The housing 5 has mounting holes 5a. The first circuit board 6 is disposed inside the housing 5 and has solder joints. A first end 21 of the power-connecting part is soldered to the solder joints, and a second end 22 of the power-connecting part is soldered to one end of the cable 7. The specific structure of the junction box 100 is as described in the above embodiments. Since this electrical device 200 adopts all the technical solutions of all the above embodiments, it possesses at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be elaborated further here.

[0111] Further, please refer to Figure 5 In this embodiment, the electrical equipment 200 also includes a second circuit board 8 disposed inside the housing 5, and a connecting part 81 is provided on the second circuit board 8; the other end of the cable 7 is provided with a power terminal 9, and the power terminal 9 is plugged into the connecting part 81.

[0112] The connecting part 81 can be a connector or a socket, or other possible connecting parts 81 can be used. The specific choice can be determined according to the actual situation, and this specification does not limit this.

[0113] Thus, when there is sufficient assembly space on the circuit board, quick connection can be achieved through the power terminal 9 and the connection part 81 on the second circuit board 8, thereby improving assembly efficiency.

[0114] This utility model also proposes an electric vehicle, which includes electrical components and electrical equipment 200. The specific structure of the electrical equipment 200 is as described in the above embodiments. Since this electric vehicle adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0115] The above description is merely an exemplary embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A junction box, characterized in that, include: The housing has a mounting cavity, and a first connection port and a second connection port communicating with the mounting cavity; as well as, A power receiving part is installed in the mounting cavity. The power receiving part has a first end and a second end that are arranged opposite to each other. The first end of the power receiving part extends outward from the first connection port for soldering to a circuit board. The second end of the power receiving part is arranged corresponding to the second connection port for soldering to a cable.

2. The junction box as described in claim 1, characterized in that, The box has a first end and a second end that are arranged opposite to each other. The first end of the box is provided with the first connection port, and the second end of the box is provided with a plug-in part for plugging into the mounting hole of the housing.

3. The junction box as described in claim 2, characterized in that, The insertion part includes a main body protruding from the box body and a buckle protruding from the peripheral side of the main body.

4. The junction box as described in claim 3, characterized in that, The fastener includes a retaining arm extending outward from the peripheral side of the main body, the retaining arm being inclined in a direction away from the main body toward the box body.

5. The junction box as described in claim 3, characterized in that, The insertion part also includes a guide protrusion protruding from the main body, the guide protrusion being located on the side of the buckle away from the box body.

6. The junction box as described in claim 1, characterized in that, One of the electrical receiving part and the box body is provided with a positioning protrusion, and the other is provided with a positioning hole.

7. The junction box as described in claim 1, characterized in that, The mounting cavity is also provided with a limiting part located between the first connection port and the second connection port, and the limiting part is provided with a limiting hole for the power receiving part to pass through.

8. The junction box as described in claim 7, characterized in that, At least two limiting parts are provided, and the two limiting parts are arranged at intervals. One limiting part limits the first end of the power receiving part, and the other limiting part limits the second end of the power receiving part.

9. The junction box as described in claim 1, characterized in that, The power receiving part is transitionally fitted with the first connection port.

10. The junction box as described in claim 1, characterized in that, The box body includes two shells, and a snap-fit ​​structure is provided between the two shells so that the two shells are fixedly enclosed to form the mounting cavity.

11. The junction box as described in claim 10, characterized in that, The electrical contact portion includes two conductive bars, and the snap-fit ​​structure is located between the two conductive bars.

12. An electrical device, characterized in that, include: A housing, wherein mounting holes are provided on the housing; The first circuit board is located inside the housing and has solder joints on it; Cables, and, According to any one of claims 1 to 11, the first end of the power receiving part is welded to the welding point, and the second end of the power receiving part is welded to one end of the cable.

13. The electrical equipment as claimed in claim 12, characterized in that, The electrical equipment also includes a second circuit board disposed inside the housing, and the second circuit board is provided with a connection portion; The other end of the cable is provided with a power terminal, which is plugged into the connector.

14. An electric vehicle, characterized in that, Includes the electrical equipment as described in claim 12 or 13.

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