CN211054948U - Liquid cooling structure of charging terminal - Google Patents

Abstract

A liquid-cooling structure for a charging terminal, comprising a terminal, a sealing component and a liquid-cooled cable, the liquid-cooled cable includes a cable conductor connected to the terminal, an insulating layer wrapped around the cable conductor, and an outer sheath arranged outside the insulating layer The sleeve has a flow channel between the outer sheath and the insulating layer. The sealing assembly includes an insulating sleeve sleeved on the terminal and a sleeve sleeved on the insulating sleeve, and the front end of the insulating sleeve is connected to the terminal and the rear end is connected to the insulating layer. ; The front end of the sleeve is connected to the insulating sleeve, and the rear end is connected to the outer sheath through the sealing wire body; the sleeve, the insulating sleeve and the sealing wire body form a liquid-cooling cavity that communicates with the flow channel, and the liquid-cooling cavity is connected to the terminal through the insulating sleeve. Isolation, an adapter connected to the liquid cooling chamber is installed on the sleeve. The utility model can be compatible with the battery pack cooling system on the new energy vehicle. By arranging an insulating sleeve between the liquid cooling cavity and the terminal, the non-insulating medium cooling liquid in the battery pack cooling system is isolated from the terminal, and heat conduction is realized through the insulating sleeve. Transfer terminal heat to coolant.

Description

A charging terminal liquid cooling structure

technical field

The utility model belongs to the technical field of new energy vehicle charging, in particular to a liquid cooling structure of a charging terminal.

Background technique

With the introduction and popularization of high-power charging, ordinary charging products have been unable to meet the actual needs of use. For example, in the field of new energy vehicle charging technology, the high temperature phenomenon of the terminals during the charging process has always become an industry problem, which not only affects the use of users, but also has certain problems. security risks. In the existing solution to solve the high temperature phenomenon of the terminal, the cooling liquid is in direct contact with the terminal, and the cooling medium is an insulating medium, such as silicone oil or mineral oil, but the cooling medium of this solution must be an insulating medium, which cannot be compared with the existing battery pack cooling system on the vehicle. Compatible, an additional circulating pump is required to cool the terminals; this is because the coolant used in the battery pack cooling system is a non-insulating medium, such as the most commonly used ethylene glycol mixed coolant, which leads to the need to use two The cooling system separately circulates and cools the charging terminal and the battery pack, which not only occupies the interior space of the vehicle, but also has high manufacturing and design costs.

Utility model content

In order to solve the above technical problems, the purpose of the present invention is to provide a charging terminal liquid cooling structure compatible with the existing battery pack cooling system in the vehicle, so as to solve the problem of terminal charging high temperature and save the cost of the whole vehicle.

The purpose of this utility model and the technical problem to be solved are achieved by adopting the following technical solutions. A liquid-cooling structure for a charging terminal proposed according to the present utility model includes a terminal, a sealing assembly and a liquid-cooled cable. The liquid-cooled cable includes a cable conductor connected to the terminal, an insulating layer wrapped around the cable conductor, and a liquid-cooled cable. an outer sheath outside the insulating layer, there is a flow channel for cooling liquid to circulate between the outer sheath and the insulating layer, the sealing assembly includes an insulating sleeve sleeved on the terminal and a sleeve sleeved on the insulating sleeve, and The front end of the insulating sleeve is connected with the terminal, and the rear end is connected with the insulating layer; the front end of the sleeve is connected with the insulating sleeve, and the rear end is connected with the outer sheath through the wire sealing body; The liquid cooling chamber is connected with the liquid cooling chamber, the liquid cooling chamber is isolated from the terminal by the insulating sleeve, and the adapter is also installed on the sleeve which is communicated with the liquid cooling chamber.

The utility model is further realized by the following technical solutions.

In the aforementioned liquid-cooling structure of the charging terminal, the front end of the terminal has a wiring hole for the cable conductor to pass through.

In the aforementioned liquid cooling structure of the charging terminal, the cable conductor and the threading hole are fixed by crimping.

In the aforementioned liquid-cooling structure of the charging terminal, a sealing ring is installed between the adapter and the sleeve.

The liquid cooling structure of the charging terminal further includes an end cover connected to the rear end of the sleeve and axially limiting the wire sealing body.

In the aforementioned liquid-cooling structure of the charging terminal, the end cover and the sleeve are connected by a buckle.

In the aforementioned liquid-cooling structure of the charging terminal, the terminal is provided with a card slot for the front end of the insulating sleeve to be fastened and fixed.

In the liquid-cooling structure of the charging terminal, the middle part of the insulating sleeve is located in the liquid-cooling cavity and is arranged in contact with the terminal.

In the aforementioned liquid-cooled structure of the charging terminal, the front end of the sleeve and the front end of the insulating sleeve are installed in an interference fit to achieve a sealed connection; the rear end of the insulating sleeve and the insulating layer are installed in an interference fit to achieve a sealed connection.

In the aforementioned liquid-cooling structure of the charging terminal, the front end of the sleeve is provided with an inward flange that stops and cooperates with the front end of the insulating sleeve.

With the above technical solution, the liquid cooling structure of the charging terminal of the present invention can be compatible with the battery pack cooling system on the existing new energy vehicle, and it is not necessary to independently set up an additional sequential cooling system, which saves the manufacturing cost of the entire vehicle and the cost of the vehicle. Inner space; by setting an insulating sleeve between the sleeve and the terminal, the non-insulating medium coolant in the cooling system of the battery pack is completely isolated from the terminal, and heat conduction is realized through the insulating sleeve, and the heat generated by the terminal is transferred to the cooling liquid Take away, and finally achieve terminal cooling.

Description of drawings

Figure 1 is a perspective view of the present invention.

FIG. 2 is a cross-sectional structural schematic diagram of the sealing assembly in the present invention.

FIG. 3 is a schematic diagram of the circulating flow of the cooling liquid when the utility model is in operation.

Detailed ways

The technical solutions of the present utility model are further described in detail below in conjunction with the accompanying drawings and preferred embodiments.

Please refer to FIG. 1 to FIG. 3 , a liquid-cooled structure of a charging terminal includes a terminal 1, a sealing assembly and a liquid-cooled cable. The liquid-cooled cable includes a cable conductor 31 connected to the terminal 1, and a cable conductor wrapped around the cable conductor. The insulating layer 32 and the outer sheath 33 arranged outside the insulating layer, there is a flow channel 4 for the cooling liquid to circulate between the outer sheath 33 and the insulating layer 32; the sealing assembly includes an insulating sleeve 21, a sleeve 22, and a wire sealing body 23 And the end cover 24, in this embodiment, the rear end of the terminal 1 is cylindrical and is provided with a wiring hole 11 for the cable conductor 31 to be inserted into. The cable conductor 31 and the wiring hole 11 are preferably crimped to achieve fixation and electrical The insulating sleeve 21 is sleeved on the terminal 1, and the terminal 1 is provided with a slot 12 for the front end of the insulating sleeve to be fastened and positioned. The rear end of the insulating sleeve 21 and the insulating layer 32 are assembled in an interference fit manner. 21 can reliably seal the connection between the terminal and the cable conductor. The sleeve 22 is sleeved on the insulating sleeve, the front end of the sleeve 22 is sealedly connected with the front end of the insulating sleeve 21, and the rear end of the sleeve is sealed and connected with the outer sheath 33 through the wire sealing body 23 sleeved on the outer sheath, then the sleeve, A liquid cooling cavity 5 is formed between the insulating sleeve and the sealing body, which is communicated with the flow channel 4 inside the liquid cooling cable. The insulating sleeve 21 is used to isolate the liquid cooling cavity 5 from the terminal 1. The sleeve is also equipped with a The adapter 6 communicated with the liquid cooling chamber 5 and the rear end of the sleeve 22 are connected with the end cover 24 to realize the positioning of the wire sealing body 23 .

In this embodiment, the sleeve 22 is a part made of insulating material, the insulating sleeve 21 is made of a rubber material with good thermal conductivity, and the insulating sleeve is a three-segment integral molding structure, wherein the front end of the insulating sleeve is used for fixing and connecting with the terminal. There is an interference fit with the sleeve, the middle part of the insulating sleeve is attached to the terminal to facilitate heat transfer, and the rear end of the insulating sleeve is used for sealing connection with the insulating layer; the rear end of the sleeve 22 is an interference fit with the sealing body, and the insulating layer is also The installation method of interference fit penetrates into the insulating sleeve to ensure the overall sealing of the liquid cooling chamber; the insulating sleeve or the contact part of the wire sealing body and the sleeve is provided with a corrugated structure that facilitates better sealing performance.

Preferably, the cable conductor 31 is a copper core cable; the inner wall of the insulating sleeve 21 and the outer wall of the terminal 1 are as close as possible to increase the contact area and achieve better thermal conductivity; the inner wall of the outer sheath 33 is provided with a The conductor supports and locates and forms a skeleton 331 that forms a stable flow channel. With this skeleton, the wire sealing body can also be squeezed and sealed with the outer sheath more closely; During the new assembly, the sleeve is fixed by the internal insulator structure of the connector, and the terminal is connected with the corresponding contact piece to realize the power transmission. Thereby, the terminal is prevented from falling out from the front end of the sleeve; the inner wall of the rear end of the sleeve has a positioning step for easy installation of the wire sealing body, and the outer wall of the rear end of the sleeve radially extends to form a flange 222 that is connected with the hook 241 of the end cover by snapping; A sealing ring 61 is also provided between the adapter and the sleeve.

In conjunction with Fig. 3, the working process of the present utility model is as follows:

The adapter 6 is in communication with the battery pack cooling system in the new energy vehicle. The battery pack cooling system provides circulating coolant to the adapter, and the coolant enters and fills the liquid cooling cavity 5 through the adapter. The sleeve 21 is in contact with the terminal 1, and the terminal heat is transferred to the cooling liquid through heat conduction to reduce the temperature of the terminal. The cooling liquid finally enters the flow channel 4 in the liquid cooling cable from the liquid cooling cavity and circulates back to the battery pack for cooling. system.

In other embodiments of the liquid cooling structure of the charging terminal, the insulating sleeve can also be made of a ceramic material with better thermal conductivity. In this case, the insulating sleeve has a gap between the two rear terminals, and the gap can be filled with thermally conductive glue Realize heat conduction and set up a sealing structure to achieve sealing; the end cover can be screwed to the back end of the sleeve; the type of terminals is not limited to terminals or transfer terminals, etc., but also can be used in various types of connectors. Pin contacts Or jack contacts, which are not limited by the present invention.

The above are only the preferred embodiments of the present invention, and any technical personnel familiar with the present profession, without departing from the scope of the technical solutions of the present invention, can make any modifications to the above embodiments according to the technical essence of the present invention. Simple modifications, equivalent changes and modifications still fall within the scope of the technical solutions of the present invention.

Claims (10)

1. A liquid-cooled structure for a charging terminal, comprising a terminal, a sealing assembly and a liquid-cooled cable, wherein the liquid-cooled cable includes a cable conductor connected to the terminal, an insulating layer wrapped around the cable conductor, and a cable disposed outside the insulating layer. The outer sheath has a flow channel for the cooling liquid to circulate between the outer sheath and the insulating layer. It is characterized in that: the sealing assembly includes an insulating sleeve sleeved on the terminal and a sleeve sleeved on the insulating sleeve, and The front end of the insulating sleeve is connected with the terminal, and the rear end is connected with the insulating layer; the front end of the sleeve is connected with the insulating sleeve, and the rear end is connected with the outer sheath through the wire sealing body; The liquid cooling chamber is connected with the liquid cooling chamber, the liquid cooling chamber is isolated from the terminal by the insulating sleeve, and the adapter is also installed on the sleeve which is communicated with the liquid cooling chamber. 2 . The liquid cooling structure of the charging terminal according to claim 1 , wherein the front end of the terminal has a wiring hole for the cable conductor to pass through. 3 . 3 . The liquid cooling structure of the charging terminal according to claim 2 , wherein the cable conductor and the threading hole are fixed by crimping. 4 . 4 . The liquid cooling structure of the charging terminal according to claim 1 , wherein a sealing ring is installed between the adapter and the sleeve. 5 . 5 . The liquid cooling structure of the charging terminal according to claim 1 , further comprising an end cap connected to the rear end of the sleeve and axially limiting the wire sealing body. 6 . 6 . The liquid cooling structure of the charging terminal according to claim 5 , wherein the end cover and the sleeve are connected by a buckle. 7 . 7 . The liquid-cooling structure of the charging terminal according to claim 1 , wherein the terminal is provided with a slot for fastening and fixing the front end of the insulating sleeve. 8 . 8 . The liquid cooling structure of the charging terminal according to claim 7 , wherein the middle part of the insulating sleeve is located in the liquid cooling cavity and is arranged in contact with the terminal. 9 . 9 . The liquid cooling structure of the charging terminal according to claim 8 , wherein the front end of the sleeve and the front end of the insulating sleeve adopt an interference fit installation method to achieve a sealed connection; the rear end of the insulating sleeve and the insulating layer adopt an interference fit. 10 . The matching installation method realizes a sealed connection. 10 . The liquid-cooling structure of the charging terminal according to claim 9 , wherein the front end of the sleeve is provided with an inward flange that stops and cooperates with the front end of the insulating sleeve. 11 .

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