Connecting structure of liquid cooling charging gun and charging pile CDU driving device

Abstract

The invention discloses a connecting structure of a liquid cooling charging gun and a charging pile CDU driving device, and relates to the technical field of direct current liquid cooling charging piles, the connecting structure comprises a limiting sliding block, a limiting guide rail is arranged at the bottom of the limiting sliding block, a U-shaped limiting buckle is arranged at the top of the limiting sliding block, and a limiting piece is arranged on the right side of the U-shaped limiting buckle. When the gun tail of the charging gun is connected with the charging pile CDU driving locking device, locking and sealing are carried out at the same time, the charging gun tail and the charging pile CDU driving locking device work together, locking is achieved, operation is convenient, the structure is simple, maintenance is convenient, and the good locking effect is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of direct current liquid-cooled charging piles, and in particular to a connection structure between a liquid-cooled charging gun and a charging pile CDU drive device. Background Art

[0002] The existing DC liquid-cooled charging gun and the charging pile CDU drive device are fixed and connected by ordinary screws. In this way, the charging gun and the charging pile CDU drive device will not reach a protection level higher than (exceeding) the standard requirements due to external factors such as sealing performance. When the charging gun is used outdoors, the poor sealing performance may cause the charging gun coolant to "burst", posing serious safety hazards such as electric shock, leakage injury, and vehicle damage. The present invention is to provide a better and safer connection method, so as to achieve the purpose of connection, fixation and waterproofing. The effect can enable the charging gun and the charging pile CDU drive device to meet the relevant standard requirements and exceed the standard to achieve a protection level. Summary of the invention

[0003] In view of the above-mentioned shortcomings of the prior art, an object of the present invention is to provide a connection structure between a liquid-cooled charging gun and a charging pile CDU drive device.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a connection structure between a liquid-cooled charging gun and a charging pile CDU drive device, comprising a limit slider, a limit guide rail is provided at the bottom of the limit slider, a U-shaped limit buckle is provided at the top of the limit slider, and a limit piece is provided on the right side of the U-shaped limit buckle.

[0005] Preferably, a slide rail is provided at the bottom of the limiting member, and the slide rail includes an arc segment and a straight line segment.

[0006] Preferably, a limiting recess is provided on the left side of the limiting member.

[0007] Preferably, a return spring is provided at the bottom of the straight line segment.

[0008] Compared with the prior art, the present invention has the following beneficial effects:

[0009] The present invention has a simple structure, and when the tail of the charging gun is connected to the charging pile CDU driving locking device, locking and sealing are performed simultaneously, and it works together with the charging pile to achieve locking. It is not only easy to operate, but also has a simple structure, convenient maintenance, and has a good locking effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is the work flow chart of the present invention;

[0011] Figure 2 It is a schematic diagram of the structure of the present invention.

[0012] Numbers in the figure: 1, limit slider; 2, return spring; 3, slide rail; 31, arc segment; 32, straight line segment; 4, U-shaped limit buckle; 5, limit member; 6, limit depression; 7, limit guide rail. DETAILED DESCRIPTION

[0013] See also Figure 1-2 , the present invention provides a technical solution:

[0014] Embodiment 1:

[0015] A connection structure between a liquid-cooled charging gun and a charging pile CDU drive device includes a limit slider 1, a limit guide rail 7 is provided at the bottom of the limit slider 1, a U-shaped limit buckle 4 is provided at the top of the limit slider 1, a limit member 5 is provided on the right side of the U-shaped limit buckle 4, a slide rail 3 is provided at the bottom of the limit member 5, the slide rail 3 includes an arc segment 31 and a straight segment 32, a limit recess 6 is provided on the left side of the limit member 5, and a reset spring 2 is provided at the bottom of the straight segment 32.

[0016] Embodiment 2:

[0017] The device has a circuit device and a structural device. The circuit device includes an electronic circuit, an integrated program, a line control, etc. The structural device includes a PCB circuit board, and the circuit board end is fixed inside the charging gun body. The charging gun device with comprehensive protection function works together with the charging pile to achieve locking. It is not only easy to operate, but also has a simple structure, convenient maintenance, and has a good locking effect.

[0018] The following options are available for use of this device:

[0019] (1) Selection of coolant medium

[0020] The properties of the coolant are the primary key. It is necessary to ensure that the cooling liquid is non-corrosive to the liquid flow pipeline, and has a large heat carrying capacity, which can effectively take away the heat generated by the conductor when it is energized. At the same time, the coolant has good insulation properties. Automotive coolant can be selected. By cooperating with universities, we can select a suitable flow medium (large heat carrying capacity, low corrosion to the pipeline) to ensure good physical properties of the pipeline.

[0021] (2) Design of cooling pipes

[0022] The charging cable has no fixed bending direction during actual use. The cooling pipe is a hollow structure, which is easily squeezed and deformed when twisted, thus affecting the flow of coolant. Therefore, the support of the coolant pipe is very important. High-hardness TPU pipes are selected to improve the support of the coolant return pipe, ensuring that the pipe can quickly recover to its original state after being bent and squeezed, ensuring the smooth flow of coolant.

[0023] (3) Calculation of coolant flow and flow rate

[0024] The development of high-power charging cables mainly relies on the flow of coolant to remove the heat generated by the conductor, thereby improving the current carrying capacity of the cable. Therefore, the flow rate and flow rate calculation and design of the coolant are very important to improve the current carrying capacity. It is necessary to cooperate with third-party units to design a matching circulating cooling pump, select a suitable cooling medium, calculate the heating condition of the conductor and the heat that the cooling medium needs to remove, and then obtain the required flow rate and flow rate data;

[0025] (4) According to the requirements of GB / T20234.4-2023, the cooling pipe is placed in an air oven at 120℃±2℃ for 168h and the mechanical properties test is carried out in accordance with Chapter 9 of GB / T2951.11-2008. The tensile strength and elongation at break should not exceed ±30%.

Claims

1. A connection structure between a liquid-cooled charging gun and a charging pile CDU driving device, comprising a limit slider (1), characterized in that: A limiting guide rail (7) is provided at the bottom of the limiting slider (1), a U-shaped limiting buckle (4) is provided at the top of the limiting slider (1), and a limiting member (5) is provided on the right side of the U-shaped limiting buckle (4).

2. The connection structure of a liquid-cooled charging gun and a charging pile CDU driving device according to claim 1 is characterized in that: A slide rail (3) is provided at the bottom of the position-limiting member (5), and the slide rail (3) comprises an arc segment (31) and a straight segment (32).

3. The connection structure of a liquid-cooled charging gun and a charging pile CDU driving device according to claim 1 is characterized in that: A limiting recess (6) is provided on the left side of the limiting member (5).

4. The connection structure of a liquid-cooled charging gun and a charging pile CDU driving device according to claim 2 is characterized in that: A return spring (2) is provided at the bottom of the straight line segment (32).

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