High-voltage box lower shell with leveling and anti-loosening functions

Abstract

The utility model discloses a high-voltage box lower shell with leveling and anti-loosening functions, which comprises a lower shell body (1), an electrical mounting plate (2) is connected to the inner bottom of the lower shell body (1), a lower positioning piece (3) is connected to the inner bottom of the lower shell body (1), a through hole (5) corresponding to the lower positioning piece (3) is formed in the electrical mounting plate (2), a boss gasket (6) is mounted in the through hole (5), and the boss gasket (6) is connected with the lower positioning piece (3). The boss gasket (6) is sleeved with the lower positioning piece (3), an elastic piece (7) is sleeved on the lower positioning piece (3) below the electrical mounting plate (2), and a fastening piece (4) is connected above the electrical mounting plate (2). The lower shell is simple in overall structure and low in cost, has leveling and anti-loosening functions, and can realize an equipotential effect between the lower shell body and the electrical mounting plate.

Description

Technical Field

[0001] The utility model belongs to the technical field of high-voltage box electrical component installation, and particularly relates to a high-voltage box lower shell with a leveling and anti-loosening function. Background Art

[0002] The battery energy distribution unit (BDU) (hereinafter referred to as the high-voltage box) is an important component in the high-voltage circuit of electric vehicles. It controls the power-on and power-off processes, pre-charging process, and charging process of the high-voltage electrical circuit, and has a significant impact on the high-voltage electrical safety of the entire vehicle.

[0003] Unlike the passenger car sector, construction machinery and commercial vehicles have greater requirements for the power of the entire vehicle. Their high-voltage boxes are connected to more battery packs and require more high-voltage distribution components to be assembled inside, which makes the electrical component mounting plate inside the high-voltage box used to install high-voltage distribution components larger. Since the plate thickness used for the electrical component mounting plate is relatively thin, it is easy to deform during welding. In addition, the number and weight of the high-voltage distribution components installed on the electrical component mounting plate will also cause deformation of the electrical component mounting plate, thereby affecting actual assembly and use.

[0004] Electric vehicles operate on relatively high voltage platforms. As a critical component in their high-voltage circuits, the high-voltage box itself requires equipotential treatment to prevent electric shock during use or maintenance. Electrophoretic shielding is typically performed at the point where the lower housing of the high-voltage box contacts the electrical component mounting plate before electrophoretic spraying to ensure direct contact between the lower housing and the mounting plate. However, manual electrophoretic shielding of the lower housing and the mounting plate can compromise overall electrophoretic shielding efficiency. Utility Model Content

[0005] The purpose of the utility model is to provide a high-voltage box lower shell with a leveling and anti-loosening function, which has a simple overall structure and low cost. It has the leveling and anti-loosening function and can achieve an equipotential effect between the lower shell body and the electrical installation board.

[0006] To achieve the above-mentioned purpose, the utility model provides a high-voltage box lower shell with a leveling and anti-loosening function, including a lower shell body, an electrical installation plate connected to the inner bottom of the lower shell body, a lower positioning piece connected to the inner bottom of the lower shell body, a through hole corresponding to the lower positioning piece is provided on the electrical installation plate, a boss gasket is installed in the through hole, the boss gasket is sleeved with the lower positioning piece, an elastic piece is sleeved on the lower positioning piece below the electrical installation plate, and a fastener is connected above the electrical installation plate.

[0007] As a further solution of the present invention: the lower positioning member includes a circular base plate, a cylinder is centrally connected to the circular base plate, and an external thread for connecting a fastener is provided on the upper part of the cylinder.

[0008] As a further solution of the present invention: the lower positioning member is arranged in the middle of the lower shell body, and the boss gasket is correspondingly arranged in the middle of the electrical installation plate.

[0009] As a further solution of the present invention: the boss gasket includes an upper component and a lower component, the upper component is centrally connected to the top of the lower component, and a center hole for the lower positioning component to pass through is provided on the upper component and the lower component. The upper component is smaller than the lower component, and the upper component is embedded in the through hole.

[0010] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0011] By using the cooperation of the lower positioning parts and the fasteners, the electrical installation board can be locally adjusted and play a role in strengthening the support, so that the overall plane of the electrical installation board can meet the requirements of the transfer;

[0012] The threaded connection between the lower positioning piece and the fixing piece can make the electrical installation plate and the lower shell body have the same potential;

[0013] The elastic member is provided between the electrical installation plate and the lower housing body to prevent the fastener from loosening;

[0014] The setting of the boss gasket can avoid direct contact between the lower positioning part and the electrical installation board. Before electrophoretic spraying of the lower shell of the high-voltage box, only the cylinder of the lower positioning part and the boss gasket need to be electrophoretically shielded, which reduces the number of electrophoretic shielding positions and effectively improves production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the lower shell of a high-voltage box with a leveling and anti-loosening function of the utility model.

[0016] Figure 2 It is a structural schematic diagram of a cross-sectional view of the lower shell of a high-voltage box with a leveling and anti-loosening function according to the utility model.

[0017] Figure 3 The utility model is a structural schematic diagram of a boss gasket of a high-voltage box lower shell with a leveling and anti-loosening function.

[0018] In the figure: 1, lower housing body, 2, electrical mounting plate, 3, lower positioning member, 4, fastener, 5, through hole, 6, boss gasket, 7, elastic member;

[0019] 3.1, circular base plate, 3.2, cylinder;

[0020] 6.1, lower part, 6.2, upper part, 6.3, center hole. DETAILED DESCRIPTION

[0021] The present invention will be further described below with reference to the accompanying drawings.

[0022] like Figure 1 and Figure 2 As shown, the lower shell of the high-voltage box with leveling and anti-loosening function includes a lower shell body 1, an electrical installation board 2 is connected to the bottom of the lower shell body 1, a lower positioning member 3 is connected to the bottom of the lower shell body 1, a through hole 5 is provided on the electrical installation board 2 corresponding to the lower positioning member 3, a boss gasket 6 is installed in the through hole 5, the boss gasket 6 is sleeved on the lower positioning member 3, an elastic member 7 is sleeved on the lower positioning member 3 below the electrical installation board 2, and a fastener 4 is connected above the electrical installation board 2.

[0023] The lower positioning member 3 is connected to the fastener 4, which can adjust the height of the electrical installation board 2. The elastic member 7 can make the spring, rubber pad and other elastic shock-absorbing materials always in a compressed state under the action of the fastener 4, and its rebound force can prevent the thread of the fastener 4 from loosening.

[0024] Furthermore, the lower positioning member 3 includes a circular base plate 3.1, with a cylindrical body 3.2 centrally connected to the circular base plate 3.1. The upper portion of the cylindrical body 3.2 is provided with external threads for connecting with the fastener 4. The diameter of the circular base plate 3.1 is larger than the diameter of the cylindrical body 3.2, which can increase the contact surface between the circular base plate 3.1 and the lower housing body 1 and reduce deformation.

[0025] Before electrophoretic spraying of the lower shell, only the cylinder 3.2 of the lower positioning part 3 and the boss gasket 6 on the electrical installation board 2 need to be electrophoretically shielded, which reduces the number of electrophoretic shielding positions and improves production efficiency; the upper cylinder 3.2 with external threads is fixed to the electrical installation board 2 by fasteners 4. Since these two contact parts are electrophoretically shielded, the electrical installation board 2 and the lower shell of the high-voltage box can achieve the purpose of equal potential.

[0026] Since the electrical installation plate 2 is mainly used to fix the high-voltage distribution components in the high-voltage box, and since a large number of electrical components are assembled inside the high-voltage box, the electrical component installation plate needs to be larger in size and bear more weight, which makes the middle part of the electrical installation plate 2 more prone to deformation, affecting the actual assembly and use. Furthermore, the lower positioning member 3 is arranged in the middle of the lower shell body 1, and the boss gasket 6 is correspondingly arranged in the middle of the electrical installation plate 2. The boss gasket 6 is nested and welded on the electrical installation plate 2, and the lower surface is in direct contact with the elastic member 7.

[0027] Further, such as Figure 3As shown, the boss gasket 6 includes an upper part 6.2 and a lower part 6.1. The upper part 6.2 is centrally connected to the upper part of the lower part 6.1. A center hole 6.3 for the lower positioning member 3 to pass through is provided on the upper part 6.2 and the lower part 6.1. The upper part 6.2 is smaller than the lower part 6.1. The upper part 6.2 is embedded in the through hole 5. The larger size of the lower part 6.1 can increase the contact area with the elastic member 7, improve the strength of the contact part, and reduce deformation. The upper part 6.2 is embedded in the through hole 5 of the electrical installation board 2, which can avoid direct contact between the electrical installation board 2 and the lower positioning member 3, so that the boss gasket 6 is tightly connected to the lower positioning member 3, and avoid shaking of the electrical installation board 2.

Claims

1. A high-voltage box lower shell with a leveling and anti-loosening function, comprising a lower shell body (1), wherein the bottom of the lower shell body (1) is connected to an electrical installation plate (2), characterized in that: The bottom of the lower shell body (1) is connected to a lower positioning member (3); a through hole (5) is provided on the electrical installation board (2) corresponding to the lower positioning member (3); a boss gasket (6) is installed in the through hole (5); the boss gasket (6) is sleeved on the lower positioning member (3); an elastic member (7) is sleeved on the lower positioning member (3) below the electrical installation board (2); and a fastener (4) is connected above the electrical installation board (2).

2. The high-voltage box lower shell with leveling and anti-loosening function according to claim 1 is characterized in that: The lower positioning member (3) comprises a circular base plate (3.1), a cylinder (3.2) is centrally connected to the circular base plate (3.1), and an external thread for connecting a fastener (4) is provided on the upper part of the cylinder (3.2).

3. The high-voltage box lower shell with leveling and anti-loosening function according to claim 1 or 2, characterized in that: The lower positioning member (3) is arranged in the middle of the lower shell body (1), and the boss gasket (6) is correspondingly arranged in the middle of the electrical installation plate (2).

4. The high-voltage box lower shell with leveling and anti-loosening function according to claim 1 or 2, characterized in that: The boss gasket (6) comprises an upper part (6.2) and a lower part (6.1); the upper part (6.2) is centrally connected above the lower part (6.1); a center hole (6.3) for the lower positioning part (3) to pass through is provided on the upper part (6.2) and the lower part (6.1); the upper part (6.2) is smaller than the lower part (6.1); and the upper part (6.2) is embedded in the through hole (5).

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