Airtight stage isolation structure between motor cavity and high-voltage junction box

Abstract

The utility model relates to an airtight level isolation structure between a motor cavity and a high-voltage junction box, and belongs to the technical field of new energy automobile structures. An airtight level isolation structure between a motor cavity and a high-voltage junction box comprises the motor cavity and the junction box. A wiring board is arranged on the junction box on the butt joint surface of the junction box and the motor cavity; a sealing piece is arranged on the butt joint face of the wiring board and the junction box. According to the utility model, the risk that damp and hot gas in the motor cavity enters the junction box can be avoided, thereby preventing condensate water from being generated in the junction box to influence safety.

Description

Technical Field

[0001] The utility model relates to an airtight isolation structure between a motor cavity and a high-voltage junction box, belonging to the technical field of new energy vehicle structures. Background Art

[0002] As the weather turns colder or the air becomes humid in winter, the high-voltage junction box of the motor on the vehicle is not insulated from the motor cavity, and the hot air in the motor cavity enters the junction box. Since the high-voltage junction box of the motor has thin walls, the temperature cools down quickly and condensation water is easily generated. The condensation water contacts the exposed motor terminals, resulting in reduced insulation performance of the motor and affecting the normal driving of the vehicle. Therefore, a reliable structure to prevent condensation water is becoming increasingly important.

[0003] At present, new energy motors either do not have a structure to prevent the generation of condensed water, or only use rubber pads to isolate the rising heat. The rubber pad structure alone cannot truly isolate the motor cavity from the high-voltage junction box, resulting in the hot and humid gas in the motor cavity still entering the high-voltage junction box, causing danger. Utility Model Content

[0004] The utility model aims to provide an airtight isolation structure between a motor cavity and a high-voltage junction box to solve the above technical problems.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] An airtight isolation structure between a motor cavity and a high-voltage junction box comprises a motor cavity and a junction box; a junction board is installed at the junction surface of the junction box with the motor cavity; and a sealing member is arranged at the junction surface of the junction board and the junction box.

[0007] The further improvement of the technical solution of the utility model is as follows: a sealant is applied on the butt joint surface of the wiring board and the wiring box as a seal; the wiring board is radially installed and inserted into the wiring box, and the wiring board and the wiring box are fixedly connected by screws.

[0008] The further improvement of the technical solution of the utility model is as follows: screws are arranged in the axial direction and radial direction of the wiring board; the screws located in the axial direction are located in the countersunk holes of the wiring board; after the screws are installed, sealant is applied in the countersunk holes.

[0009] The further improvement of the technical solution of the utility model is as follows: a sealing groove is arranged on the radial surface of the terminal block, and a sealing ring is installed in the sealing groove as a sealing member; the terminal block with the sealing ring installed is radially inserted into the terminal box, and then fastened with screws in the radial direction.

[0010] A further improvement of the technical solution of the utility model is that the sealing ring is an O-type sealing ring.

[0011] Due to the adoption of the above technical solution, the technical effects achieved by the utility model are:

[0012] The utility model installs a terminal board on the butt joint surface of the terminal box and the motor cavity, and arranges a sealing member on the butt joint surface of the terminal board and the terminal box, and gas isolation is achieved through this structure, so that when the vehicle stops running, the hot air in the motor cavity cannot enter the interior of the terminal box, thereby greatly reducing the generation of condensed water in the terminal box and improving the reliability of the motor.

[0013] The utility model is an airtight isolation structure, which can achieve airtight isolation between the motor cavity and the cavity of the high-voltage junction box. The utility model can eliminate the risk of hot and humid gas in the motor cavity entering the junction box, thereby preventing condensation water from being generated in the junction box and affecting safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of setting sealant at the joint of the utility model Figure 1 ;

[0015] Figure 2 This is a schematic diagram of setting sealant at the joint of the utility model Figure 2 ;

[0016] Figure 3 This is a schematic diagram of setting sealant at the joint of the utility model Figure 3 ;

[0017] Figure 4 It is a schematic diagram of setting sealant in the countersunk hole at the joint of the utility model;

[0018] Figure 5 This is a schematic diagram of the utility model after the sealant is set and the motor cavity cooperates;

[0019] Figure 6 This is a schematic diagram of the sealing ring provided at the joint of the utility model. Figure 1 ;

[0020] Figure 7 This is a schematic diagram of the sealing ring provided at the joint of the utility model. Figure 2 ;

[0021] Figure 8 This is a schematic diagram of the utility model after the sealing ring is arranged to cooperate with the motor cavity;

[0022] Among them, 1. Motor cavity, 2. Junction box, 3. Terminal board. DETAILED DESCRIPTION

[0023] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0024] In the description of the present invention, it should be noted that the terms "upper", "lower", "inside", "outside", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0025] The utility model discloses an airtight isolation structure between a motor cavity and a high-voltage junction box, which is a sealing structure between the motor cavity and the junction box and is used to prevent hot air from entering the junction box to generate condensed water and cause danger.

[0026] The structure mainly includes a motor cavity 1 and a junction box 2, which are in contact with each other after installation. A terminal block 3 is installed on the junction box 2, and specifically, the terminal block 3 is installed on the interface between the junction box 2 and the motor cavity 1, which facilitates subsequent wiring. In order to improve the sealing inside the junction box, the structure is provided with a seal on the interface between the terminal block 3 and the junction box 2, which can prevent condensed water from entering the junction box 2.

[0027] There are two main implementation methods for this structure.

[0028] First, apply sealant on the interface between the terminal block 3 and the terminal box 2 as a sealant. Specifically, apply sealant on the installation surface of the terminal block 3 on the terminal box 2. Then, insert the terminal block 3 radially into the terminal box 2. Finally, use screws to fix the terminal block 3 and the terminal box 2. Figure 1 , Figure 2 As shown, the thick line in the figure is the glue application position.

[0029] like Figure 3 When using screws for fastening, screws are set in both the axial and radial directions of the terminal block 3. Among them, the screws located in the axial direction are on the butt joint surface. Therefore, it is necessary to set countersunk holes on the outer surface of the terminal block 3 so that the screws are located in the countersunk holes. After installing the screws, it is necessary to apply sealant in the countersunk holes. Figure 3 , Figure 4 , Figure 5 shown.

[0030] Secondly, a sealing groove is provided on the radial surface of the terminal block 3, and a sealing groove is provided on the radial surface of the terminal block 3 that contacts the terminal box 2, and a sealing ring is installed in the sealing groove as a sealing member. The terminal block 3 with the sealing ring installed is radially inserted into the terminal box 2, and then fastened with screws in the radial direction. The sealing ring plays a sealing role. In a specific implementation, the sealing ring is an O-ring, and the sealing ring is a rubber ring. Specifically, Figure 6 , Figure 7, Figure 8 shown.

[0031] Through the isolation measures of the above structure, when the vehicle stops running, the hot air in the motor cavity cannot enter the interior of the junction box, which greatly reduces the generation of condensed water in the junction box and improves the reliability of the motor.

[0032] The airtight isolation structure of the utility model can achieve airtight isolation between the motor cavity and the cavity of the high-voltage junction box, and can meet the airtight conditions of 20 kPa of inflation pressure, 20 seconds of testing, and leakage of no more than 40 Pa. The utility model can eliminate the risk of hot and humid gas in the motor cavity entering the junction box, thereby preventing condensation water from being generated in the junction box and affecting safety.

[0033] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. An airtight isolation structure between a motor cavity and a high-voltage junction box, characterized in that: The invention comprises a motor cavity (1) and a terminal box (2); a terminal block (3) is installed at the interface between the terminal box (2) and the motor cavity (1); a sealing member is arranged at the interface between the terminal block (3) and the terminal box (2); a sealing agent is applied to the interface between the terminal block (3) and the terminal box (2) as a sealing member; the terminal block (3) is radially installed and inserted into the terminal box (2), and the terminal block (3) and the terminal box (2) are fixedly connected by screws; screws are arranged in the axial direction and radial direction of the terminal block (3); the screws located in the axial direction are located in the countersunk holes of the terminal block (3); and after the screws are installed, the sealing agent is applied in the countersunk holes.

2. The airtight isolation structure between the motor cavity and the high-voltage junction box according to claim 1 is characterized in that: A sealing groove is provided on the radial surface of the terminal block (3), and a sealing ring is installed in the sealing groove as a sealing member; the terminal block (3) with the sealing ring installed is radially inserted into the terminal box (2), and then fastened in the radial direction using screws.

3. The airtight isolation structure between the motor cavity and the high-voltage junction box according to claim 2 is characterized in that: The sealing ring is an O-ring.

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