Electric vehicle liquid cooling socket

Abstract

This application relates to the field of heat dissipation technology for electric vehicle charging sockets, and more particularly to a liquid-cooled electric vehicle socket, which includes a housing. The housing contains a mounting bracket and two terminals. The mounting bracket is connected to the housing via a snap-fit ​​mechanism. The terminals are mounted on the housing via the mounting bracket, and each terminal has a coolant tank. The end of each terminal away from the housing is a flat structure, including a mounting end piece and a flat end piece. At least one side wall of the flat end piece is planar. The mounting bracket has an opening that exposes the planar side wall of the flat end piece. One side wall of the coolant tank is in contact with the planar side wall of the flat end piece. The coolant tank is connected to an external cooling system. This application improves the heat dissipation efficiency of the socket.

Description

Technical Field

[0001] This application relates to the field of heat dissipation technology for electric vehicle charging sockets, and in particular to liquid-cooled sockets for electric vehicles. Background Technology

[0002] With the increasing popularity of electric vehicles, the power and charging speed of charging equipment are constantly improving, leading to a growing problem of temperature rise at the socket terminals during charging. To improve charging current, new energy vehicle charging guns and sockets are cooled using liquid cooling. This is achieved by incorporating a liquid cooling system, with cables embedded in liquid cooling pipes inside the charging gun and socket, combined with a liquid cooling circulation system for continuous cooling. Liquid-cooled charging guns are classified into two types based on whether the metal cables are in contact with the coolant: immersion type and isolation type.

[0003] Existing immersion-type structures offer good cooling performance, but the cost of conductive terminals is high; while isolated conductive terminals have a complex structure, are difficult to manufacture, and have poor cooling performance. Therefore, there is a need to design a liquid-cooled socket for electric vehicles with good heat dissipation to solve the temperature rise problem during high-current charging. Utility Model Content

[0004] To improve the heat dissipation of electric vehicle charging sockets, this application provides a liquid-cooled socket for electric vehicles.

[0005] The electric vehicle liquid-cooled socket provided in this application adopts the following technical solution: An electric vehicle liquid-cooled socket includes a housing, within which a mounting bracket and two terminals are disposed. The mounting bracket is connected to the housing via a snap-fit, and the terminals are mounted on the housing via the mounting bracket. Each terminal is provided with a coolant tank. The end of the terminal furthest from the housing is a flat structure, which includes a mounting end piece and a flat end piece. At least one side wall of the flat end piece is flat. The mounting bracket has an opening that exposes the flat side wall of the flat end piece. One side wall of the coolant tank is in contact with the flat side wall of the flat end piece. The coolant tank is connected to an external cooling system.

[0006] By adopting the above technical solution, during installation, the flat end piece of the terminal is first inserted into the mounting bracket, and then the mounting bracket, terminal, and other components are installed into the housing. The mounting bracket and housing are then fixed in place by clips, and the terminal is also fixed inside the housing, making installation convenient. The side wall of the coolant tank is in contact with the side wall of the flat end piece, increasing the contact area between the coolant tank and the terminal and improving the cooling effect. At the same time, the vehicle's built-in battery cooling system circulates coolant into the coolant tank.

[0007] Optionally, the coolant tank is connected to an inlet pipe and an outlet pipe. One end of the inlet pipe and the outlet pipe are connected to the coolant tank via a quick connector, and the other end of the inlet pipe and the outlet pipe are connected to the vehicle cooling system. A partition plate is provided inside the coolant tank, and a liquid cooling circuit is formed between the partition plate and the inner wall of the coolant tank. The inlet pipe and the outlet pipe are respectively connected to the liquid cooling circuits on both sides of the partition plate.

[0008] By adopting the above technical solution, the partition plate can guide the coolant to move along the circuit direction, and the longer flow of the coolant is beneficial for heat dissipation.

[0009] Optionally, the coolant tank has four screw holes at its four corners, the screw holes penetrating the sidewall of the coolant tank in the thickness direction, and bolts are installed in the screw holes. The coolant tank is fixedly connected to the flat end piece by the bolts.

[0010] By adopting the above technical solution, the coolant tank is fixedly connected to the flat end plate by bolts to ensure that the side wall of the coolant tank is in contact with the side wall of the flat end plate, thereby improving the heat dissipation effect.

[0011] Optionally, the coolant tank is provided with a cover plate, which is connected to the mounting bracket by a snap-fit.

[0012] By adopting the above technical solution, the cover plate snaps onto the mounting bracket, covering the mounting end piece and coolant tank, thus protecting the terminals and coolant tank. This improves the stability of the coolant tank installation. The snap-fit ​​connection facilitates installation.

[0013] Optionally, the connection between the cover plate and the mounting bracket is provided with a clearance hole adapted to the quick connector.

[0014] Optionally, the inlet pipe and outlet pipe are rotatably connected to the coolant tank via quick couplings.

[0015] By adopting the above technical solution, quick connectors are pre-installed on the inlet and outlet pipes, and the inlet and outlet pipes are connected to the coolant tank through the quick connectors. During subsequent installation, the quick connectors can be rotated arbitrarily to facilitate the routing of the inlet and outlet pipes.

[0016] Optionally, the coolant tank is an alumina ceramic water tank.

[0017] By adopting the above technical solution, the heat conduction effect is good, which facilitates heat dissipation.

[0018] In summary, this application includes at least one of the following beneficial technical effects: 1. During installation, first insert the flat end piece of the terminal into the mounting bracket, then install the mounting bracket, terminal, and other components into the housing. Secure the mounting bracket and housing with clips; the terminal is also fixed inside the housing, making installation convenient. The side wall of the coolant tank is in contact with the side wall of the flat end piece, increasing the contact area between the coolant tank and the terminal, thus improving cooling efficiency. The inlet and outlet pipes utilize the vehicle's internal battery cooling system to circulate coolant into the coolant tank. 2. The partition plate can guide the coolant to move along the circuit direction, and the longer flow of coolant is beneficial for heat dissipation; 3. The cover plate snaps onto the mounting bracket, covering the flat end piece and coolant tank, protecting the terminals and coolant tank. This improves the stability of the coolant tank installation. The snap-fit ​​connection makes installation easy. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the electric vehicle liquid-cooled socket according to an embodiment of this application.

[0020] Figure 2 This is a schematic diagram of the structure of the back of the electric vehicle liquid-cooled socket according to an embodiment of this application.

[0021] Figure 3 This is a schematic diagram showing the disassembled structure of the electric vehicle liquid-cooled socket according to an embodiment of this application.

[0022] Figure 4 This is a cross-sectional structural diagram of the liquid-cooled socket for an electric vehicle according to an embodiment of this application.

[0023] Figure 5 This is a schematic diagram of the structure of the terminals and coolant tank in an embodiment of this application.

[0024] Figure 6 This is a schematic diagram of the structure of the partition plate in an embodiment of this application.

[0025] Figure 7 This is a schematic diagram of the structure of the quick connector in the embodiment of this application.

[0026] Explanation of reference numerals in the attached drawings: 1. Housing; 2. Mounting bracket; 3. Terminal; 31. Mounting end piece; 32. Flat end piece; 4. Coolant tank; 41. Divider plate; 42. Bolt; 5. Inlet pipe; 6. Outlet pipe; 7. Quick connector; 8. Cover plate. Detailed Implementation

[0027] The following is in conjunction with the appendix Figure 1-7 This application will be described in further detail.

[0028] This application discloses a liquid-cooled socket for electric vehicles. (See also...) Figure 1 and Figure 2The electric vehicle liquid-cooled socket includes a housing 1, and a mounting bracket 2 and two terminals 3 are provided inside the housing 1. The two terminals 3 are symmetrically arranged on the left and right sides inside the housing 1.

[0029] Reference Figure 2 and Figure 3 The mounting bracket 2 is connected to the housing 1 by a snap fastener. The terminal 3 is mounted on the housing 1 by the mounting bracket 2. One end of the terminal 3 is inserted into the housing 1 and the other end is inserted into the mounting bracket 2. The housing 1 and the mounting bracket 2 fix the terminal 3 from both ends.

[0030] Reference Figure 3 and Figure 4 Each terminal 3 is equipped with a coolant tank 4. The coolant tank 4 is connected to an inlet pipe 5 and an outlet pipe 6. One end of the inlet pipe 5 and the outlet pipe 6 is connected to the coolant tank 4 via a quick connector 7, and the other end is connected to the vehicle's internal battery cooling system. The coolant tank 4 is made of alumina ceramic, which has good thermal conductivity and facilitates heat dissipation.

[0031] Reference Figure 4 and Figure 5 The end of terminal 3 furthest from housing 1 is a flat structure, comprising an annular mounting end piece 31 and a flat end piece 32, the sidewall of which is flat. The mounting end piece 31 is fitted to the inner wall of mounting bracket 2, allowing terminal 3 to be secured within the mounting bracket 2. An opening on the mounting bracket 2 exposes the flat sidewall of the flat end piece 32. The coolant tank 4 is rectangular, its flat sidewall tightly fitting against the flat sidewall of the flat end piece 32. This tight fit between the two planes increases the contact area between the coolant tank 4 and terminal 3, improving the cooling effect of the terminal.

[0032] Reference Figure 6 The coolant tank 4 has a partition plate 41 inside, forming a liquid cooling circuit between the partition plate 41 and the inner wall of the coolant tank 4. The inlet pipe 5 and the outlet pipe 6 are respectively connected to the liquid cooling circuits on both sides of the partition plate 41. The partition plate 41 can guide the coolant to move along the circuit direction, and the longer flow of the coolant is beneficial to heat dissipation.

[0033] Reference Figure 5 and Figure 6 The coolant tank 4 has four screw holes at its four corners. The screw holes penetrate the side wall of the coolant tank 4 in the thickness direction. Bolts 42 are installed in the screw holes. The bolts 42 are self-tapping screws. Holes are pre-drilled on the flat end plate 32. The coolant tank 4 is fixedly connected to the flat end plate 32 by the bolts 42 to ensure that the side wall of the coolant tank 4 is in contact with the side wall of the flat end plate 32, thereby improving the heat dissipation effect.

[0034] Reference Figure 3 and Figure 4 A cover plate 8 is provided on the coolant tank 4, and the cover plate 8 is connected to the mounting bracket 2 by a snap-fit. The coolant tank 4 is set in a groove on the mounting bracket 2, and the cover plate 8 covers it, improving the stability of the coolant tank 4 during installation. The snap-fit ​​connection makes installation convenient. A clearance hole adapted to the quick connector 7 is provided at the connection between the cover plate 8 and the mounting bracket 2 for easy installation.

[0035] Reference Figure 6 and Figure 7 The quick connector 7 is L-shaped. One end engages with and rotates with the coolant tank 4, while the other end is fixedly connected to the inlet pipe 5 and the outlet pipe 6. This facilitates installation and allows for arbitrary rotation after connection, which is beneficial for pipe routing.

[0036] The implementation principle of the electric vehicle liquid-cooled socket in this application embodiment is as follows: During installation, the terminal 3 is first inserted into the mounting bracket 2, and then the mounting bracket 2, terminal 3, and other components are installed into the housing 1. The mounting bracket 2 and housing 1 are fixed by clips, and the terminal 3 is also fixed inside the housing 1. At this time, the flat end piece 32 is exposed by the mounting bracket 2 and housing 1. The operator installs the coolant tank 4 onto the flat end piece 32 with bolts 42, so that its side walls are in contact. Then, the cover plate 8 is fastened onto the mounting bracket 2 to cover the flat end piece 32 and coolant tank 4, protecting the terminal 3 and coolant tank 4. At this time, quick connectors 7 are pre-installed on the inlet pipe 5 and outlet pipe 6. The inlet pipe 5 and outlet pipe 6 are connected to the coolant tank 4 through the quick connectors 7 to complete the socket assembly. During subsequent installation, the quick connectors 7 can be rotated arbitrarily to facilitate the routing of the inlet pipe 5 and outlet pipe 6.

[0037] The above are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A liquid-cooled socket for electric vehicles, characterized in that: The device includes a housing (1), which contains a mounting bracket (2) and two terminals (3). The mounting bracket (2) is connected to the housing (1) by a snap fastener. The terminals (3) are mounted on the housing (1) via the mounting bracket (2). Each terminal (3) is provided with a coolant tank (4). The end of the terminal (3) away from the housing (1) is a flat structure, which includes a mounting end piece (31) and a flat end piece (32). The flat end piece (32) has at least one side wall that is flat. The mounting bracket (2) has an opening that exposes the flat side wall of the flat end piece (32). One side wall of the coolant tank (4) is in contact with the flat side wall of the flat end piece (32). The coolant tank (4) is connected to an external cooling system.

2. The electric vehicle liquid-cooled socket according to claim 1, characterized in that: The coolant tank (4) is connected to an inlet pipe (5) and an outlet pipe (6). One end of the inlet pipe (5) and the outlet pipe (6) are connected to the coolant tank (4) via a quick connector (7), and the other end of the inlet pipe (5) and the outlet pipe (6) are connected to the vehicle cooling system. A partition plate (41) is provided inside the coolant tank (4). A liquid cooling circuit is formed between the partition plate (41) and the inner wall of the coolant tank (4). The inlet pipe (5) and the outlet pipe (6) are respectively connected to the liquid cooling circuits on both sides of the partition plate (41).

3. The electric vehicle liquid-cooled socket according to claim 1, characterized in that: The coolant tank (4) has four screw holes at its four corners. The screw holes penetrate the sidewall of the coolant tank (4) in the thickness direction. Bolts (42) are installed in the screw holes. The coolant tank (4) is fixedly connected to the flat end piece (32) by the bolts (42).

4. The electric vehicle liquid-cooled socket according to claim 3, characterized in that: The coolant tank (4) is provided with a cover plate (8), and the cover plate (8) is connected to the mounting bracket (2) by a snap fastener.

5. The electric vehicle liquid-cooled socket according to claim 4, characterized in that: The cover plate (8) and the mounting bracket (2) are provided with a clearance hole that is compatible with the quick connector (7).

6. The electric vehicle liquid-cooled socket according to claim 2, characterized in that: The inlet pipe (5) and outlet pipe (6) are rotatably connected to the coolant tank (4) via quick connectors (7).

7. The electric vehicle liquid-cooled socket according to claim 1, characterized in that: The coolant tank (4) is an alumina ceramic water tank.

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