Liquid cooling charging terminal capable of enhancing heat exchange

Abstract

The utility model discloses a liquid-cooled charging terminal capable of enhancing heat exchange, which comprises a charging terminal main body and a spiral deflector, the spiral deflector is arranged in the charging terminal main body, an outer flow channel is formed between the outer wall of the spiral deflector and the inner wall of the charging terminal main body, a spiral baffle sheet is formed on the outer wall of the spiral deflector, and the outer flow channel is communicated with the spiral baffle sheet. An inner flow channel is formed in the spiral deflector, the head end of the outer flow channel is connected with the head end of the inner flow channel in a communicating mode, and a spiral groove is formed in the inner wall of the charging terminal body. The liquid-cooled charging terminal capable of enhancing heat exchange is beneficial to improving the heat exchange effect, thereby being beneficial to fully exerting the current-carrying capability of the liquid-cooled charging terminal.

Description

Technical Field

[0001] The utility model relates to the field of terminals applied to high-power charging connection, and particularly relates to a liquid-cooled charging terminal with enhanced heat exchange. Background Art

[0002] At present, the liquid-cooled charging terminal is a part of the charging connector of new energy vehicles. The liquid-cooled charging terminal is used to be inserted into the female conductive terminal. The flow channel design of the existing liquid-cooled charging terminal is simple, and the cooling medium is prone to flow dead zones during the flow inside the liquid-cooled charging terminal, resulting in poor heat exchange effect. This causes the temperature of the liquid-cooled charging terminal to be relatively high during the charging process, making it prone to oxidation or increasing the possibility of ablation, and reducing the terminal life. Therefore, it is necessary to improve the existing liquid-cooled charging terminal. Summary of the Invention

[0003] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a liquid-cooled charging terminal with enhanced heat exchange, which is beneficial to improving the heat exchange effect and thus beneficial to giving full play to the current-carrying capacity of the liquid-cooled charging terminal.

[0004] The purpose of the utility model is realized by the following technical solutions.

[0005] The disclosed liquid-cooled charging terminal with enhanced heat exchange of the utility model includes a charging terminal main body and a spiral flow deflector. The spiral flow deflector is arranged inside the charging terminal main body. An outer flow channel is formed between the outer wall of the spiral flow deflector and the inner wall of the charging terminal main body. Spiral flow deflection fins are formed on the outer wall of the spiral flow deflector. An inner flow channel is formed inside the spiral flow deflector. The head end of the outer flow channel is connected and communicated with the head end of the inner flow channel. A spiral groove is formed on the inner wall of the charging terminal main body.

[0006] Preferably, the head end of the charging terminal main body is hermetically arranged. An installation port is formed at the tail end of the charging terminal main body. The inner flow channel axially penetrates through the spiral flow deflector. An installation head is formed outside the tail end of the spiral flow deflector. The installation head is hermetically and adaptively installed and connected with the installation port. A liquid passing interface is formed on the wall body at the tail end of the charging terminal main body. The liquid passing interface communicates with the tail end of the inner flow channel.

[0007] Preferably, the installation port is screwed with the installation head.

[0008] Preferably, the cross-section of the inner flow channel is set to be a regular hexagon.

[0009] Preferably, the installation port is formed with an inner conical surface, and the installation head is formed with an outer conical surface. The inner conical surface and the outer conical surface are connected by interference fit.

[0010] Preferably, the liquid-cooled charging terminal of the present utility model further includes a charging terminal tail pipe portion. A pagoda joint is formed at the head end of the charging terminal tail pipe portion, and a riveting joint is formed at the tail end of the charging terminal tail pipe portion. The charging terminal tail pipe portion is formed with a liquid outlet, which is arranged between the riveting joint and the pagoda joint. The head end of the pagoda joint is fixedly connected to the tail end of the charging terminal main body, and the liquid outlet communicates with the tail end of the internal flow channel.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows: By arranging a spiral flow deflector inside the charging terminal main body, an external flow channel is formed between the outer wall of the spiral flow deflector and the inner wall of the charging terminal main body. Spiral flow deflector vanes are formed on the outer wall of the spiral flow deflector, and an internal flow channel is formed inside the spiral flow deflector. The head end of the external flow channel is connected and communicated with the head end of the internal flow channel, enabling the cooling medium to flow orderly inside the liquid-cooled charging terminal and avoiding the occurrence of flow dead zones. In addition, spiral grooves are formed on the inner wall of the charging terminal main body, further increasing the contact area between the charging terminal main body and the cooling medium. Moreover, the cooling medium is less likely to form a flow boundary layer on the inner wall of the charging terminal main body, thus facilitating the improvement of the heat exchange effect and thereby facilitating the full play of the current-carrying capacity of the liquid-cooled charging terminal. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a three-dimensional structural schematic diagram of the liquid-cooled charging terminal of the present utility model.

[0013] Figure 2 is a cross-sectional structural schematic diagram of the liquid-cooled charging terminal according to the first embodiment of the present utility model.

[0014] Figure 3 is a schematic diagram of the flow path of the cooling medium inside the liquid-cooled charging terminal according to the first embodiment of the present utility model.

[0015] Figure 4 is a cross-sectional structural schematic diagram of the charging terminal main body according to the first embodiment of the present utility model.

[0016] Figure 5 is a three-dimensional structural schematic diagram of the spiral flow deflector according to the first embodiment of the present utility model.

[0017] Figure 6 is a cross-sectional structural schematic diagram of the liquid-cooled charging terminal according to the second embodiment of the present utility model.

[0018] Figure 7 is a cross-sectional structural schematic diagram of the charging terminal main body according to the second embodiment of the present utility model.

[0019] Figure 8 is a cross-sectional structural schematic diagram of the spiral flow deflector according to the second embodiment of the present utility model.

[0020] Figure 9 This is a schematic structural diagram of a liquid-cooled charging terminal connected to a liquid-cooled cable in the first embodiment of the utility model.

[0021] Explanation of reference numerals: charging terminal body 1; external flow channel 100; mounting port 101; spiral groove 102; inner ring groove 103; liquid interface 104; spiral deflector 2; spiral deflector 201; mounting head 202; internal flow channel 203; liquid inlet connector 3; charging terminal tail pipe part 4; pagoda connector 401; liquid outlet 402; riveted connector 403; insulating cap 5; sheath tube 99; liquid-cooled cable conductor 98. DETAILED DESCRIPTION

[0022] The utility model is further described below in conjunction with the accompanying drawings.

[0023] The utility model provides a liquid-cooled charging terminal with enhanced heat exchange, such as Figure 1 and Figure 2 As shown, it includes a charging terminal body 1 and a spiral baffle 2, the spiral baffle 2 is arranged in the charging terminal body 1, the spiral baffle 2 and the charging terminal body 1 are preferably arranged coaxially, and an outer flow channel 100 is formed between the outer wall of the spiral baffle 2 and the inner wall of the charging terminal body 1, as shown in FIG. Figure 5 As shown, a spiral baffle 201 is formed on the outer wall of the spiral baffle 2, and an inner flow channel 203 is formed in the spiral baffle 2. Figure 2 and Figure 3 As shown, the head end of the outer flow channel 100 is connected to the head end of the inner flow channel 203. The "head end" mentioned here refers to the end of the liquid-cooled charging terminal that first enters the female conductive terminal during the process of being inserted into the female conductive terminal; Figure 4 As shown, a spiral groove 102 is formed on the inner wall of the charging terminal body 1 , the cross section of the spiral groove 102 may be triangular, and the inner wall of the charging terminal body 1 may be formed with multiple spiral grooves 102 .

[0024] like Figure 3As shown, the cooling medium is input into the tail end of the outer flow channel 100. The cooling medium forms a spiral cooling medium flow under the guidance of the spiral baffle 201. It can also be understood that the spiral baffle 201 makes the cooling medium flow into a three-dimensional meandering shape. When the cooling medium reaches the head end of the outer flow channel 100, the cooling medium turns and flows into the head end of the inner flow channel 203. The cooling medium passes through the inner flow channel 203 and reaches the tail end of the inner flow channel 203. Thus, the cooling medium has a stable path in the charging terminal body 1, enabling the cooling medium to stably flow in and out of the liquid-cooled charging terminal, and improving the cooling efficiency of the liquid-cooled charging terminal. Since the outer flow channel 100 is formed, the inner wall of the charging terminal body 1 is directly in contact with the orderly flowing cooling medium, enabling the heat of the charging terminal body 1 to be effectively transferred to the cooling medium. And due to the setting of the spiral baffle 201, the cooling medium spirally covers and contacts the inner wall of the charging terminal body 1 in the circumferential direction, thus avoiding the occurrence of flow dead zones, enabling all parts (in the circumferential direction) of the charging terminal body 1 to be effectively in contact with the cooling medium, and avoiding the upper part of the charging terminal body 1 from not being effectively cooled due to the gravity of the cooling medium in the horizontally arranged charging terminal body 1, further improving the heat exchange effect, and thus being beneficial to giving full play to the current-carrying capacity of the liquid-cooled charging terminal. Since the spiral groove 102 is formed on the inner wall of the charging terminal body 1, it is beneficial to increase the contact area between the inner wall of the charging terminal body 1 and the cooling medium, beneficial to improving the heat exchange efficiency, and the cooling medium located at the inner wall of the charging terminal body 1 can flow along the spiral groove 102, thus avoiding the formation of a flow boundary layer at the inner wall of the charging terminal body 1, and thus being beneficial to improving the heat exchange effect.

[0025] Further, as Figure 4 shown, the head end of the charging terminal body 1 is closed, and an installation port 101 is formed at the tail end of the charging terminal body 1. As Figure 2 shown, the inner flow channel 203 axially penetrates through the spiral baffle 2. The inner flow channel 203 and the spiral baffle 2 body are preferably coaxially arranged. As Figure 5 shown, an installation head 202 is formed outside the tail end of the spiral baffle 2. As Figure 2 shown, the installation head 202 is hermetically installed and connected to the installation port 101 in a matching manner. As Figure 4As shown, a liquid passage interface 104 is formed on the end wall of the charging terminal body 1. The liquid passage interface 104 communicates with the end of the inner flow channel 203. In other words, the installation head 202 closes the installation port 101, and the installation port 101 supports the spiral baffle 2, so that the head end of the spiral baffle 2 can be suspended inside the charging terminal body 1. Through the above settings, since the liquid passage interface 104 is offset to one side of the charging terminal body 1, the spiral baffle 2 is axially inserted into the charging terminal body 1, which is beneficial to the simple installation of the spiral baffle 2. For example, the installation head 202 is screwed to the installation port 101, or the installation head 202 is connected to the installation port 101 by interference fit; or the installation head 202 and the installation port 101 are in clearance fit, but a sealing ring is provided between the installation head 202 and the installation port 101. As Figure 3 shown, a liquid inlet joint 3 can be hermetically welded to the liquid passage interface 104, and the liquid inlet joint 3 is used to connect the liquid infusion pipeline.

[0026] In some embodiments, as Figure 2 shown, the installation port 101 is screwed to the installation head 202. Specifically, as Figure 4 shown, an internal thread is formed on the installation port 101. As Figure 5 shown, an external thread is formed on the installation head 202. The above internal thread is screwed to the above external thread in an adapted manner. More specifically, the above internal thread and the above external thread can be sealed pipe threads. The installation structure of the installation port 101 and the installation head 202 is simple and easy to manufacture. Only need to insert the head end of the spiral baffle 2 into the charging terminal body 1, and then rotate the spiral baffle 2 to screw the above internal thread to the above external thread. Therefore, it is beneficial to the convenient installation of the spiral baffle 2.

[0027] Furthermore, as Figure 5 shown, the cross-section of the inner flow channel 203 is set to be a regular hexagon. Then, an internal hexagon wrench can be inserted into the end of the inner flow channel 203 to rotate the spiral baffle 2, so that it is convenient to install the spiral baffle 2.

[0028] In some embodiments, as Figure 7 shown, an inner conical surface is formed on the installation port 101. As Figure 8 shown, an outer conical surface is formed on the installation head 202. As Figure 6As shown, the above-mentioned inner conical surface and the above-mentioned outer conical surface are connected by interference fit. More specifically, the installation port 101 is in the shape of a flared opening. Thus, during the installation of the spiral flow deflector 2, the spiral flow deflector 2 is axially inserted into the charging terminal body 1. Since the diameter of the head end of the above-mentioned inner conical surface is smaller than the diameter of the tail end of the above-mentioned inner conical surface, the above-mentioned outer conical surface will ultimately be abutted and blocked by the above-mentioned inner conical surface. At this time, by applying an axial thrust to the tail end of the spiral flow deflector 2 towards the head end of the charging terminal body 1, the above-mentioned outer conical surface can be squeezed against the above-mentioned inner conical surface, thereby forming an interference fit. The taper of the above-mentioned inner conical surface and the above-mentioned outer conical surface is set to be relatively small, so that the frictional force between the above-mentioned inner conical surface and the above-mentioned outer conical surface can lock the above-mentioned inner conical surface and the above-mentioned outer conical surface, preventing the installation head 202 from separating from the installation port 101 due to vibration during normal use.

[0029] Furthermore, as Figure 1 and Figure 2 shown, the liquid-cooled charging terminal of the present utility model further includes a charging terminal tail pipe portion 4. A pagoda joint 401 is formed at the head end of the charging terminal tail pipe portion 4, that is to say, the pagoda joint 401 has an annular barb structure. For example, reference can be made to the "Pagoda Joint and Plug" with the Chinese Utility Model Patent Publication No. CN219140133U. A riveting joint 403 is formed at the tail end of the charging terminal tail pipe portion 4. A liquid outlet 402 is formed on the charging terminal tail pipe portion 4. The liquid outlet 402 is specifically a notch opened on one side of the wall body of the charging terminal tail pipe portion 4. The liquid outlet 402 is arranged between the riveting joint 403 and the pagoda joint 401. The head end of the pagoda joint 401 is fixedly connected to the tail end of the charging terminal body 1. Specifically, the charging terminal tail pipe portion 4 and the charging terminal body 1 are coaxially arranged. The head end of the pagoda joint 401 is hermetically welded to the tail end of the charging terminal body 1 to prevent liquid leakage between the head end of the pagoda joint 401 and the tail end of the charging terminal body 1. The liquid outlet 402 communicates with the tail end of the inner flow channel 203; through the above settings, as Figure 9As shown, the end of the liquid-cooled cable conductor 98 of the liquid-cooled cable can be inserted into the riveted joint 403, and then the wall of the riveted joint 403 on the same side as the liquid outlet 402 is flattened, so that the inner wall of the riveted joint 403 is close to the end of the liquid-cooled cable conductor 98, thereby forming a reliable conductive connection, and the end of the sheath tube 99 of the liquid-cooled cable is tightly sleeved outside the pagoda joint 401, so that the cooling medium is input into the liquid inlet joint 3, and the cooling medium enters the outer flow channel 100 through the liquid interface 104, and then the cooling medium spirally flows in the outer flow channel 100 in an orderly manner to the inside of the head end of the charging terminal body 1, and then the cooling medium turns 180° into the head end of the inner flow channel 203, and the cooling medium is discharged into the charging terminal tail pipe part 4 through the inner flow channel 203, and the cooling medium flows into the sheath tube 99 of the liquid-cooled cable through the liquid outlet 402. In other words, through the above-mentioned arrangement, the liquid-cooled charging terminal of the utility model can be conveniently connected to the liquid-cooled cable.

[0030] like Figure 4 As shown, an inner ring groove 103 is formed at the first end surface of the charging terminal body 1. Figure 2 As shown, the inner ring groove 103 is adapted to be connected with one end of the insulating cap 5 .

[0031] In summary, the liquid-cooled charging terminal of the present invention has the following advantages:

[0032] (1) Strengthen the heat exchange of liquid-cooled charging terminals to give full play to the current-carrying capacity of conductors.

[0033] (2) Fewer parts, simple structure, and easy installation.

[0034] (3) Improve the operating conditions of liquid-cooled charging terminals and extend their service life.

Claims

1. A liquid-cooled charging terminal with enhanced heat exchange, characterized in that: The invention comprises a charging terminal body (1) and a spiral baffle (2), wherein the spiral baffle (2) is arranged inside the charging terminal body (1), an outer flow channel (100) is formed between the outer wall of the spiral baffle (2) and the inner wall of the charging terminal body (1), a spiral baffle plate (201) is formed on the outer wall of the spiral baffle (2), an inner flow channel (203) is formed inside the spiral baffle (2), a head end of the outer flow channel (100) is connected to a head end of the inner flow channel (203), and a spiral groove (102) is formed on the inner wall of the charging terminal body (1).

2. The liquid-cooled charging terminal with enhanced heat exchange according to claim 1, characterized in that: The head end of the charging terminal body (1) is closed, and a mounting port (101) is formed at the tail end of the charging terminal body (1). The inner flow channel (203) axially penetrates the spiral deflector (2). A mounting head (202) is formed outside the tail end of the spiral deflector (2). The mounting head (202) is adapted to be sealed and mounted in connection with the mounting port (101). A liquid passage interface (104) is formed on the tail end wall of the charging terminal body (1), and the liquid passage interface (104) is connected to the tail end of the inner flow channel (203).

3. The liquid-cooled charging terminal with enhanced heat exchange according to claim 2, characterized in that: The mounting port (101) is threadedly connected to the mounting head (202).

4. The liquid-cooled charging terminal with enhanced heat exchange according to claim 3, characterized in that: The cross section of the inner flow channel (203) is configured to be a regular hexagon.

5. The liquid-cooled charging terminal with enhanced heat exchange according to claim 2, characterized in that: The installation port (101) is formed with an inner conical surface, the installation head (202) is formed with an outer conical surface, and the inner conical surface is connected to the outer conical surface by interference fit.

6. The liquid-cooled charging terminal with enhanced heat exchange according to claim 2, characterized in that: The charging terminal also comprises a tail tube portion (4) of the charging terminal, wherein the head end of the tail tube portion (4) is formed with a pagoda joint (401), the tail end of the tail tube portion (4) is formed with a rivet joint (403), the tail end of the tail tube portion (4) is formed with a liquid outlet (402), the liquid outlet (402) is arranged between the rivet joint (403) and the pagoda joint (401), the head end of the pagoda joint (401) is fixedly connected to the tail end of the charging terminal body (1), and the liquid outlet (402) is connected to the tail end of the inner flow channel (203).

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