Liquid-cooled high-voltage power supply connector

Abstract

The utility model discloses a liquid-cooled high-voltage power supply connector capable of dissipating heat quickly. According to the technical scheme, the connector comprises a connector shell, an insulating rubber core arranged in the connector shell, two power terminals arranged in the insulating rubber core and a tail cover arranged at the rear end of the connector shell. The side wall of the power terminal is provided with a rubber coating layer, and two independently spaced liquid cooling cavities are formed between the rubber coating layer and the insulating rubber core. Two liquid cooling cables are arranged at the rear end of the connector shell, and each liquid cooling cable comprises an insulating layer, an inner cooling pipe arranged in the center of the insulating layer and a plurality of strands of wires arranged between the insulating layer and the inner cooling pipe.

Description

Technical Field

[0001] The utility model belongs to the field of new energy vehicles, and particularly relates to an automotive high-voltage connector. Background Art

[0002] The automotive high-voltage power connector refers to a working voltage of 60 - 800V or even higher. The automotive high-voltage power connector is an important component in new energy vehicles, mainly used for the whole vehicle, charging facilities, etc. With the continuous increase of the working voltage, a large amount of heat will inevitably be generated in the power terminals. As the terminal temperature continues to rise, it will affect the electrical safety of the equipment, and in severe cases, combustion will occur. Therefore, how to reduce the temperature of the terminals and cables is particularly important. However, there is no water circulation structure (cooling water circulates inside the connector) between the power terminals and the cables of traditional automotive high-voltage power connectors, resulting in the inability to quickly dissipate heat during operation and easily triggering safety accidents. Summary of the Utility Model

[0003] The technical problem to be solved by the utility model is to provide a liquid-cooled high-voltage power connector that can quickly dissipate heat.

[0004] To solve the above problems, the technical solutions adopted by the utility model include: a connector housing, an insulating rubber core provided in the connector housing, two power terminals provided in the insulating rubber core, and a tail cover provided at the rear end of the connector housing. It is characterized in that: a rubber coating layer is provided on the side wall of the power terminal, and two independent and spaced liquid-cooling cavities are formed between the rubber coating layer and the insulating rubber core; two liquid-cooling cables are provided at the rear end of the connector housing. The liquid-cooling cable includes an insulating layer, an inner cooling pipe provided in the center of the insulating layer, and a plurality of strands of wires provided between the insulating layer and the inner cooling pipe. The front end of the plurality of strands of wires is connected to the rear end of the power terminal; two long water nozzles respectively communicating with the liquid-cooling cavities and two short water nozzles respectively communicating with the liquid-cooling cavities are provided at the rear end of the insulating rubber core. The short water nozzles are provided inside the connector housing and are connected to the inner cooling pipe, and the long water nozzles extend out of the connector housing.

[0005] The liquid-cooled high-voltage power connector is characterized in that: an interface sealing ring is provided at the front end of the connector housing, and a cable sealing ring is provided at the rear end. A terminal sealing ring is provided at the front end of the power terminal, and a coolant sealing ring is provided at the rear end.

[0006] The liquid-cooled high-voltage power connector is characterized in that: a rear cover is provided at the rear end of the insulating rubber core. The long water nozzle is integrally formed on the rear cover, and the short water nozzle is detachably provided on the rear cover.

[0007] The liquid-cooled high-voltage power connector is characterized in that: the rear cover is connected to the card slot inside the connector housing through a buckle on the side wall.

[0008] The described liquid-cooled high-voltage power connector is characterized in that: a boosting handle is hinged on the connector housing, and a CPA locking mechanism is provided on the boosting handle.

[0009] The described liquid-cooled high-voltage power connector is characterized in that: a wire pressing plate is provided in the connector housing corresponding to the rear of the rear cover.

[0010] The described liquid-cooled high-voltage power connector is characterized in that: a bulging portion is provided on the connector housing, and the card slot is provided in the bulging portion.

[0011] The described liquid-cooled high-voltage power connector is characterized in that: a front cover is provided at the front end of the connector housing, shielding sheets are provided on both sides of the front cover, and interlocking pins are provided inside.

[0012] The described liquid-cooled high-voltage power connector is characterized in that: an open crown spring is provided at the front end of the power terminal.

[0013] The described liquid-cooled high-voltage power connector is characterized in that: positioning convex portions are provided on both sides of the connector housing, and a positioning groove for positioning and cooperating with the positioning convex portions is provided on the boosting handle.

[0014] The advantages of the liquid-cooled high-voltage power connector of the present utility model are as follows: the cooling water between the power terminal and the cable in the connector can circulate, and the water circulation can quickly take away the heat generated during the working process. Furthermore, the current-carrying capacity of the cable is effectively improved under the condition of the same cross-sectional area, and the temperature rise of the connector is reduced.

[0015] The present utility model will be further described below in conjunction with the accompanying drawings of the specification. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of the liquid-cooled high-voltage power connector of the present utility model;

[0017] Figure 2 is a side view of the liquid-cooled high-voltage power connector of the present utility model;

[0018] Figure 3 is an exploded view of the liquid-cooled high-voltage power connector of the present utility model;

[0019] Figure 4 is Figure 2 a sectional view taken along the line A-A of

[0020] Figure 5 is Figure 2 a sectional view taken along the line B-B of

[0021] Figure 6 is a sectional view of the liquid-cooled cable of the present utility model;

[0022] Figure 7 is a schematic structural view of the connector housing of the present utility model;

[0023] Figure 8 is a schematic structural view of the front cover of the present utility model;

[0024] Figure 9 is a schematic view of the cooling water circulation of the liquid-cooled high-voltage power connector of the present utility model. Detailed implementation mode

[0025] Referring to Figures 1-9 As shown, the liquid-cooled high-voltage power connector of the present utility model includes a connector housing 1, an insulating rubber core 2 arranged in the connector housing 1, two power terminals 3 arranged in the insulating rubber core 2, and a tail cover 4 arranged at the rear end of the connector housing 1. A rubber coating layer 5 is provided on the side wall of the power terminal 3, and two independently spaced liquid-cooling cavities 6 are formed between the rubber coating layer 5 and the insulating rubber core 2. Two liquid-cooling cables 7 are provided at the rear end of the connector housing 1. The liquid-cooling cable 7 includes an insulating layer 8, an inner cooling pipe 9 arranged in the center of the insulating layer 8, and a multi-strand wire 10 arranged between the insulating layer 8 and the inner cooling pipe 9. The front end of the multi-strand wire 10 is connected to the rear end of the power terminal 3. At the rear end of the insulating rubber core 2, there are two long water nozzles 11 respectively communicating with the liquid-cooling cavity 6 and two short water nozzles 12 respectively communicating with the liquid-cooling cavity 6. The short water nozzles 12 are arranged in the connector housing 1, and the short water nozzles 12 are connected to the inner cooling pipe 9. The long water nozzles 11 extend out of the connector housing 1 for connection with an external cooling pipe. During assembly, first cut off the front end of the insulating layer 8 of the liquid-cooling cable 7 to expose the front ends of the inner cooling pipe 9 and the multi-strand wire 10, then straighten the front ends of the multi-strand wire 10 to one side and insert them into the power terminal 3 and fix them by crimping. Finally, insert the front end of the inner cooling pipe 9 into the short water nozzle 12. Note: The other ends of the inner cooling pipe 9 and the external cooling pipe are connected to a liquid circulation device to finally form a circulation loop. The liquid circulation device is a well-known technology and will not be elaborated here. The liquid-cooled high-voltage power connector realized in this embodiment is the plug end and should be used in cooperation with the socket end. The socket end is also a well-known technology.

[0026] Preferably, an interface sealing ring 13 is provided at the front end of the connector housing 1, a cable sealing ring 14 is provided at the rear end of the connector housing 1, a terminal sealing ring 15 is provided at the front end of the power terminal 3, and a coolant sealing ring 16 is provided at the rear end of the power terminal 3. Through the above implementation, the sealing inside the connector housing 1 and after connection with the socket end can be realized.

[0027] Preferably, a rear cover 17 is provided at the rear end of the insulating rubber core 2. The long water nozzle 11 is integrally formed on the rear cover 17, and the short water nozzle 12 is detachably arranged on the rear cover 17. Specifically, the short water nozzle 12 is inserted into the slot on the insulating rubber core 2 through the insertion plate 30 on the side wall, so as to facilitate the replacement of different water nozzle models.

[0028] Preferably, the rear cover 17 is connected to the card slot 19 in the connector housing 1 through the buckle 18 on the side wall. A bulging portion 23 is provided on the connector housing 1, and the card slot 19 is arranged in the bulging portion 23 to achieve a hidden buckle and ensure the sealing performance.

[0029] Preferably, a power-assisted handle 20 is hinged on the connector housing 1, and a CPA locking mechanism 21 is provided on the power-assisted handle 20. The CPA locking mechanism 21 includes a locking piece 31 inserted on the power-assisted handle 20 and a T-shaped column 32 arranged on the connector housing 1. After the power-assisted handle 20 is flipped in place, it is locked by inserting the locking piece 31 into the T-shaped column 32 to achieve the locking of the connector.

[0030] Preferably, a wire pressing plate 22 is provided in the connector housing 1 corresponding to the rear of the rear cover 17 to fix the cable and improve the stability of the cable connection.

[0031] Preferably, a front cover 24 is provided at the front end of the connector housing 1. Shielding sheets 25 are provided on both sides of the front cover 24, and interlocking pins 26 are provided inside. The shielding sheets 25 are used for the electromagnetic shielding of the connector, and the interlocking pins 26 are used for the connection confirmation of the connector (after inserting into the socket end, a path is formed with the signal female terminal on the socket end, indicating successful connection).

[0032] Preferably, an open crown spring 27 is provided at the front end of the power terminal 3 to improve the stability and conductivity of the connection with the power female terminal of the socket end.

[0033] Preferably, positioning convex portions 28 are provided on both sides of the connector housing 1, and positioning grooves 29 that are in positioning cooperation with the positioning convex portions 28 are provided on the power-assisted handle 20. It is used for the positioning after the power-assisted handle 20 rotates in place.

[0034] As mentioned above, it does not impose any formal restrictions on the utility model. Although the utility model has been disclosed above with preferred implementation cases, it is not intended to limit the utility model. Any person skilled in the art can make some changes or modifications to the equivalent implementation cases of equivalent changes by using the disclosed structure and technical content within the scope of the technical solution of the utility model. However, as long as the content does not deviate from the technical solution of the utility model, any simple modification, equivalent change and modification made to the above implementation cases based on the technical essence of the utility model still fall within the scope of the technical solution of the utility model.

Claims

1. A liquid-cooled high-voltage power connector, comprising a connector housing (1), an insulating rubber core (2) provided in the connector housing (1), two power terminals (3) provided in the insulating rubber core (2), and a tail cover (4) provided at the rear end of the connector housing (1), characterized in that: The side wall of the power terminal (3) is provided with a rubber coating layer (5), and two independent and spaced liquid cooling cavities (6) are formed between the rubber coating layer (5) and the insulating rubber core (2); two liquid cooling cables (7) are provided at the rear end of the connector housing (1). The liquid cooling cable (7) includes an insulating layer (8), an inner cooling tube (9) arranged at the center of the insulating layer (8), and a plurality of strands of wires (10) arranged between the insulating layer (8) and the inner cooling tube (9). The front end of the plurality of strands of wires (10) is connected to the rear end of the power terminal (3); two long water nozzles (11) respectively communicating with the liquid cooling cavity (6) and two short water nozzles (12) respectively communicating with the liquid cooling cavity (6) are provided at the rear end of the insulating rubber core (2). The short water nozzles (12) are arranged inside the connector housing (1) and are connected to the inner cooling tube (9), and the long water nozzles (11) extend out of the connector housing (1).

2. The liquid-cooled high-voltage power connector according to claim 1, characterized in that: An interface sealing ring (13) is provided at the front end of the connector housing (1), and a cable sealing ring (14) is provided at the rear end; a terminal sealing ring (15) is provided at the front end of the power terminal (3), and a coolant sealing ring (16) is provided at the rear end.

3. The liquid-cooled high-voltage power supply connector according to claim 1, wherein: A rear cover (17) is provided at the rear end of the insulating rubber core (2). The long water nozzles (11) are integrally formed on the rear cover (17), and the short water nozzles (12) are detachably arranged on the rear cover (17).

4. The liquid-cooled high-voltage power connector according to claim 3, wherein: The rear cover (17) is connected to a clamping groove (19) inside the connector housing (1) through a buckle (18) on the side wall.

5. The liquid-cooled high-voltage power connector according to claim 1, characterized in that: An assisting handle (20) is hinged on the connector housing (1), and a CPA locking mechanism (21) is provided on the assisting handle (20).

6. The liquid-cooled high-voltage power connector according to claim 3, wherein: A wire pressing plate (22) is provided inside the connector housing (1) corresponding to the rear of the rear cover (17).

7. The liquid-cooled high-voltage power connector according to claim 4, wherein: A bulging portion (23) is provided on the connector housing (1), and the clamping groove (19) is arranged inside the bulging portion (23).

8. The liquid-cooled high-voltage power connector according to claim 1, characterized in that: A front cover (24) is provided at the front end of the connector housing (1). Shielding sheets (25) are provided on both sides of the front cover (24), and interlocking pins (26) are arranged inside.

9. The liquid-cooled high-voltage power supply connector according to claim 1, characterized in that: An open crown spring (27) is provided at the front end of the power terminal (3).

10. The liquid-cooled high-voltage power connector according to claim 5, wherein: Positioning convex portions (28) are provided on both sides of the connector housing (1), and positioning grooves (29) for positioning and cooperating with the positioning convex portions (28) are provided on the assisting handle (20).

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