Junction box suitable for high-voltage power supply

Abstract

The utility model discloses a junction box suitable for a high-voltage power supply, which comprises a box body used for being connected with a vehicle body, a first connector used for being connected with a whole vehicle PDU and a second connector used for being connected with a VCU are arranged in the box body, and an input relay signal end of the whole vehicle PDU is electrically connected with the VCU; the box cover is used for sealing the box body; wherein the box body is also internally provided with a plugging part which is connected with the first connector and is used for being connected with external electrical equipment. The box body is universal, a high-voltage circuit inserting part can be additionally arranged, the development cost is reduced, in addition, the input relay signal end of the whole vehicle PDU is connected with the VCU, and a high-voltage circuit can be independently controlled.

Description

Technical Field

[0001] This utility model belongs to the field of automotive parts technology, and in particular relates to a junction box suitable for high-voltage power supplies. Background Technology

[0002] As the development of new energy vehicles matures, new energy commercial vehicles are gradually being applied to the urban road cleaning industry. Due to the industry's specific characteristics, vehicles need to be equipped with high-voltage electrical equipment suitable for different types of roads. The vehicle's PDU (Power Distribution Unit) supplies power to the installed high-voltage electrical equipment.

[0003] The existing technical solution is that the vehicle PDU needs to integrate all the circuit protection and connector interfaces of the added high-voltage electrical equipment into one unit, and connect directly to the added high-voltage electrical equipment. It is impossible to control each high-voltage circuit individually. Furthermore, because the requirements of the added high-voltage electrical equipment are different, the vehicle PDU enclosure will be adjusted accordingly, resulting in the enclosure being non-universal and increasing development costs. Utility Model Content

[0004] To address the aforementioned technical problems, this utility model provides a junction box suitable for high-voltage power supplies and develops a universal enclosure with a plug-in part inside for connecting external electrical equipment, thereby reducing development costs.

[0005] Specifically, this utility model discloses a junction box suitable for high-voltage power supplies, comprising:

[0006] A housing for connecting to the vehicle body, the housing having a first connector for connecting the vehicle PDU and a second connector for connecting the VCU, and the input relay signal terminal of the vehicle PDU being electrically connected to the VCU;

[0007] A lid used to seal the box; among which...

[0008] The housing is also provided with a plug-in part that connects to the first connector and is used to connect to external electrical equipment.

[0009] Furthermore, the plug-in portion includes a first plug-in portion, a second plug-in portion, a third plug-in portion, and a fourth plug-in portion. The low-voltage signals of the first connector, the first plug-in portion, the second plug-in portion, the third plug-in portion, and the fourth plug-in portion are all connected in series with the low-voltage signals of the second connector and the VCU to form a high-voltage interlock circuit.

[0010] Furthermore, the first connector is connected to the first plug-in portion via a first copper busbar, a first fuse, and a second copper busbar;

[0011] The first connector is connected to the second plug portion via a first copper busbar, a second fuse, and a third copper busbar;

[0012] The first connector is connected to the third plug portion via a first copper busbar, a fourth copper busbar, and a third fuse.

[0013] The first connector is connected to the fourth plug portion via a first copper busbar, a fourth copper busbar, and a fourth fuse.

[0014] Furthermore, the negative terminal of the first connector is connected to the first plug-in portion, the second plug-in portion, the third plug-in portion, and the fourth plug-in portion via a connecting copper busbar.

[0015] Furthermore, the outer surface of the enclosure is provided with a grounding port.

[0016] Furthermore, the interior of the enclosure is also equipped with a limit switch for detecting the state of the enclosure lid, and the electrical signal of the limit switch is connected to the VCU via the second connector.

[0017] Furthermore, a sealing gasket is provided between the sealing edge of the box and the box cover.

[0018] Furthermore, the outer surface of the box is also provided with a vent valve that communicates with the interior of the box.

[0019] The beneficial effects of this utility model are as follows:

[0020] The enclosure is universal, which reduces development costs and can be equipped with a high-voltage circuit connector. In addition, the input relay signal terminal of the vehicle PDU is connected to the VCU, and the high-voltage circuit can be controlled independently. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0022] Figure 1 It is an isometric drawing of a junction box suitable for high-voltage power supplies;

[0023] Figure 2 This is an internal schematic diagram of a junction box suitable for high-voltage power supplies;

[0024] Figure 3 This is an external schematic diagram of a junction box suitable for high-voltage power supplies;

[0025] Figure 4 This is a wiring diagram for a junction box suitable for high-voltage power supplies.

[0026] The reference numerals in the attached drawings are as follows: housing 1, first connector 11, second connector 12, first plug-in part 131, first copper busbar 1311, first fuse 1312, second copper busbar 1313, second plug-in part 132, second fuse 1321, third copper busbar 1322, third plug-in part 133, fourth copper busbar 1331, third fuse 1332, fourth plug-in part 134, fourth fuse 1341, connecting copper busbar 14, grounding port 15, limit switch 16, sealing edge 17, sealing gasket 18, vent valve 19, housing cover 2. Detailed Implementation

[0027] The present invention will now be described in further detail with reference to the accompanying drawings.

[0028] like Figure 1-4 As shown, this utility model discloses a junction box suitable for high-voltage power supplies, comprising:

[0029] The housing 1 is used for connecting to the vehicle body. The housing 1 is provided with a first connector 11 for connecting the vehicle PDU and a second connector 12 for connecting the VCU. The input relay signal terminal of the vehicle PDU is electrically connected to the VCU.

[0030] The cover 2 is used to seal the box body 1; wherein,

[0031] The housing 1 is also provided with a plug-in part that connects to the first connector 11 and is used to connect external electrical equipment.

[0032] The enclosure 1 is a universal type, which reduces development costs and can be equipped with a high-voltage circuit connector. In addition, the input relay signal terminal of the vehicle PDU is connected to the VCU, realizing independent control of the high-voltage circuit.

[0033] To enable the connection of multiple high-voltage devices, multiple connectors can be provided. In this solution, four connectors are provided, including a first connector 131, a second connector 132, a third connector 133, and a fourth connector 134. The low-voltage signals of the first connector 11, the first connector 131, the second connector 132, the third connector 133, and the fourth connector 134 are all connected in series with the low-voltage signals of the second connector 12 and the VCU to form a high-voltage interlock circuit.

[0034] In addition, to improve the circuit safety at the connector end, fuses are installed in each circuit; among them,

[0035] The first connector 11 is connected to the first plug-in part 131 via a first copper busbar 1311, a first fuse 1312, and a second copper busbar 1313. One end of the first copper busbar 1311 is connected to the first connector 11, and the other end is connected to the first fuse 1312. One end of the second copper busbar 1313 is connected to the first fuse 1312, and the other end is connected to the first plug-in part 131.

[0036] The first connector 11 is connected to the second plug-in part 132 via a first copper busbar 1311, a second fuse 1321, and a third copper busbar 1322. One end of the first copper busbar 1311 is connected to the first connector 11, and the other end is connected to the second fuse 1321. One end of the third copper busbar 1322 is connected to the second fuse 1321, and the other end is connected to the second plug-in part 132.

[0037] The first connector 11 is connected to the third plug-in part 133 via the first copper busbar 1311, the fourth copper busbar 1331, and the third fuse 1332. One end of the first copper busbar 1311 is connected to the first connector 11, and the other end is connected to the fourth copper busbar 1331. One end of the third fuse 1332 is connected to the fourth copper busbar 1331, and the other end is connected to the third plug-in part 133.

[0038] The first connector 11 is connected to the fourth plug-in part 134 via the first copper busbar 1311, the fourth copper busbar 1331, and the fourth fuse 1341. One end of the first copper busbar 1311 is connected to the first connector 11, and the other end is connected to the fourth copper busbar 1331. One end of the fourth fuse 1341 is connected to the fourth copper busbar 1331, and the other end is connected to the fourth plug-in part 134.

[0039] Furthermore, the negative terminal of the first connector 11 is connected to the negative terminals of the first plug-in part 131, the second plug-in part 132, the third plug-in part 133 and the fourth plug-in part 134 through the connecting copper busbar 14, forming a continuous circuit.

[0040] To further improve the safety of the junction box, a limit switch 16 for detecting the status of the cover 2 is also provided inside the box 1. The electrical signal of the limit switch 16 is connected to the VCU through the second connector 12. When the cover 2 is opened or closed, the limit switch 16 will be triggered, thereby controlling the on and off of the high voltage power supply to prevent the operator from accidentally touching the high voltage power supply.

[0041] In some embodiments of this utility model, the outer surface of the housing 1 is provided with a grounding port 15 to prevent the housing 1 from becoming energized.

[0042] In addition, a sealing gasket 18 is provided between the sealing edge 17 of the box body 1 and the box cover 2 to prevent water from entering the box body 1 and improve the sealing performance of the box body 1.

[0043] Furthermore, the outer surface of the housing 1 is also equipped with a vent valve 19 that communicates with the interior of the housing 1. When the electrical components inside the housing 1 are working and generating heat, the internal pressure can be released to the outside through the vent valve 19 on the housing 1, so that the internal pressure of the housing 1 is consistent with the atmospheric pressure, preventing the risk of water ingress due to excessive internal pressure.

[0044] For those skilled in the art, various modifications and improvements can be made without departing from the inventive concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. A junction box suitable for high-voltage power supplies, characterized in that, include: The housing (1) is used for connecting to the vehicle body. The housing (1) is provided with a first connector (11) for connecting the vehicle PDU and a second connector (12) for connecting the VCU. The input relay signal terminal of the vehicle PDU is electrically connected to the VCU. A lid (2) for sealing the box body (1); wherein, The housing (1) is also provided with a plug-in part that connects to the first connector (11) and is used to connect to external electrical equipment; The connector includes a first connector (131), a second connector (132), a third connector (133), and a fourth connector (134). The low-voltage signals of the first connector (11), the first connector (131), the second connector (132), the third connector (133), and the fourth connector (134) are all connected in series with the low-voltage signals of the second connector (12) and the VCU to form a high-voltage interlock circuit. The first connector (11) is connected to the first plug-in part (131) via a first copper busbar (1311), a first fuse (1312), and a second copper busbar (1313); The first connector (11) is connected to the second plug-in part (132) via a first copper busbar (1311), a second fuse (1321), and a third copper busbar (1322); The first connector (11) is connected to the third plug-in portion (133) via a first copper busbar (1311), a fourth copper busbar (1331), and a third fuse (1332); The first connector (11) is connected to the fourth plug part (134) via the first copper busbar (1311), the fourth copper busbar (1331), and the fourth fuse (1341).

2. The junction box for high-voltage power supplies according to claim 1, characterized in that, The negative terminal of the first connector (11) is connected to the first plug-in part (131), the second plug-in part (132), the third plug-in part (133) and the fourth plug-in part (134) via a connecting copper busbar (14).

3. The junction box for high-voltage power supplies according to claim 1, characterized in that, The outer surface of the enclosure (1) is provided with a grounding port (15).

4. The junction box suitable for high-voltage power supplies according to claim 1, characterized in that, The interior of the housing (1) is also provided with a limit switch (16) for detecting the state of the housing cover (2). The electrical signal of the limit switch (16) is connected to the VCU via the second connector (12).

5. The junction box suitable for high-voltage power supplies according to claim 1, characterized in that, A sealing gasket (18) is provided between the sealing edge (17) of the box body (1) and the box cover (2).

6. The junction box for high-voltage power supplies according to claim 1, characterized in that, The outer surface of the box (1) is also provided with a vent valve (19) that communicates with the interior of the box (1).

Images