A charging stand liquid cooling structure and insulating heat-conducting pressure plate

Abstract

The present invention discloses a novel charging seat liquid cooling structure and an insulating heat-conducting pressure plate, the novel charging seat liquid cooling structure comprises a shell with a cavity and a socket assembly and a cable respectively arranged at both ends of the shell, the socket assembly is provided with a jack terminal, the rear end of the jack terminal extends backward into the cavity, the front end of the cable is inserted into the cavity and connected with the jack terminal; it also comprises an insulating heat-conducting pressure plate arranged in the shell, the insulating heat-conducting pressure plate is provided with a through hole for the jack terminal to pass through, the insulating heat-conducting pressure plate is provided with a cooling channel arranged around the through hole, and the insulating heat-conducting pressure plate is also provided with an inlet and an outlet respectively connected with both ends of the cooling channel. The structure of the present invention can ensure the heat dissipation performance without affecting the performance of the terminal, and has the characteristics of simple structure, compactness and safety.

Description

Technical Field

[0001] The invention relates to the field of connectors, and in particular to a novel charging seat liquid cooling structure and an insulating heat-conducting pressing plate. Background Art

[0002] As electric vehicles become more and more popular, charging equipment for this type of vehicle has become the core technology of this industry; and the charging connector of electric vehicles is an important component of the charging equipment. When charging electric vehicles for a long time, the terminals at the charging connection will generate a certain amount of heat due to the large charging current. The original charging connector structure is tightly arranged and not easy to dissipate heat. If the charging work is done for a long time, the contact resistance of the charging connection terminal will increase, and the temperature rise will increase, thus affecting the performance of the terminal; continuous heating will also cause the aging of plastic parts, and eventually lead to the hidden danger of burning of the charging connector. At present, the charging connection terminals on the market generally dissipate heat naturally. Therefore, the market urgently needs to solve the problem of heat dissipation of the charging connection terminals. However, with the continuous development of new energy vehicles, the natural heat dissipation of the existing charging connection terminals can no longer meet the requirements. Summary of the invention

[0003] In view of the above-mentioned existing technical defects, the present invention provides a novel liquid cooling structure of a charging stand, which can ensure the heat dissipation performance without affecting the performance of the terminal, and has the characteristics of simple, compact and safe structure.

[0004] In order to solve the above technical problems, the present invention provides a new liquid cooling structure of a charging seat, comprising a shell having a cavity and a socket assembly and a cable respectively arranged at two ends of the shell, wherein a jack terminal is provided in the socket assembly, the rear end of the jack terminal extends backward into the cavity, and the front end of the cable is inserted into the cavity and connected to the jack terminal; it also includes an insulating thermally conductive pressure plate arranged in the shell, the insulating thermally conductive pressure plate is provided with a through hole for the jack terminal to pass through, a cooling flow channel arranged around the through hole is provided in the insulating thermally conductive pressure plate, and the insulating thermally conductive pressure plate is also provided with an inlet and an outlet respectively connected to the two ends of the cooling flow channel.

[0005] Furthermore, the inlet and the outlet are both arranged at the bottom of the insulating heat-conducting pressure plate, and two conveying channels respectively connected to the inlet and the outlet are arranged in the bottom surface of the shell, and a sealing ring is arranged between the bottom of the insulating heat-conducting pressure plate and the shell.

[0006] Furthermore, two bosses are provided at the bottom of the insulating heat-conducting pressure plate, and the inlet and outlet are respectively provided on the bottom surfaces of the two bosses. A groove for accommodating the two bosses is provided at the bottom of one side of the cavity. One end opening of the conveying channel is provided in the groove and connected to the inlet or outlet, and the sealing ring is provided between the boss and the groove.

[0007] Furthermore, a raised support platform is provided in the middle of the bottom of the groove, and the sealing ring is sleeved on the outer periphery of the support platform.

[0008] Furthermore, a transfer nozzle is provided on the outer side of the shell at a position corresponding to the delivery channel, and the delivery channel is transversely arranged in the bottom surface of the shell and extends into the transfer nozzle.

[0009] Furthermore, the insulating heat-conductive pressure plate includes a cooling part inserted into the rear end of the socket assembly and a transition part mounted on the outer side of the rear end of the socket assembly, the through hole and the cooling channel are both arranged on the cooling part, the transition part is provided with two transition channels respectively connected with the two ends of the cooling channel, the inlet and the outlet are arranged at the bottom of the transition part and are respectively connected with the two transition channels one by one; an arc groove is provided on one side of the transition part, the two inner sides of the upper end of the arc groove are respectively connected with the two ends of the cooling part, and a gap is formed between the cooling part and the transition part.

[0010] Furthermore, a wire nose is provided at the front end of the cable, and the wire nose is fixed to the jack terminal by a screw; a plastic head is sleeved on the cable, and the plastic head is threadedly connected to the shell, and a self-locking nut is also provided on the plastic head, and the self-locking nut is arranged on the outside of the shell.

[0011] Furthermore, the upper end of the cavity is open, the upper end of the shell is provided with a cover plate covering the cavity, and a waterproof ring is provided between the cover plate and the shell.

[0012] Furthermore, the socket assembly is sealed and fixed to the shell by screws, and a socket cover is hinged at the front end of the socket assembly.

[0013] Furthermore, a grounding terminal is provided in the socket assembly, and a wire nose is provided at the rear end of the grounding terminal and extends inwardly into the cavity, and the wire nose is connected and fixed to the shell; a detachable air valve is also provided on the side of the shell.

[0014] An insulating thermally conductive pressure plate is also provided, wherein at least one through hole is penetrated through the insulating thermally conductive pressure plate for the socket terminal to pass through, a cooling flow channel is arranged around the through hole inside the insulating thermally conductive pressure plate, and an inlet and an outlet are respectively connected to the two ends of the cooling flow channel on one side of the insulating thermally conductive pressure plate.

[0015] Furthermore, the insulating heat-conductive pressure plate includes a cooling part and a transition part, the through hole and the cooling channel are both arranged on the cooling part, the transition part is provided with two transition channels respectively connected with the two ends of the cooling channel, the inlet and the outlet are provided at the bottom of the transition part and are respectively connected with the two transition channels one by one; an arc-shaped groove is provided on one side of the transition part, and the two inner sides of the upper end of the arc-shaped groove are respectively connected with the two ends of the cooling part, and a gap is formed between the cooling part and the transition part.

[0016] The present invention has the following beneficial effects:

[0017] The present invention sets an insulating heat-conducting pressure plate on the outside of the jack terminal for heat conduction, and sets a cooling channel inside the insulating heat-conducting pressure plate for the flow of cooling medium, which can ensure the heat dissipation performance without affecting the performance of the terminal, and the cooling channel is set around the jack terminal, which increases the contact area between the jack terminal and the cooling channel, and can improve the heat dissipation effect, so that the heat dissipation is fast and does not affect the terminal performance; the purpose of liquid cooling is achieved by the external insulating heat-conducting pressure plate in the present invention, which reduces the need to set corresponding cooling structures in the jack terminal and the socket assembly, reduces the complexity of the overall structure and avoids affecting the performance of the jack terminal, and the external insulating heat-conducting pressure plate can be replaced at any time, and can be used on various charging seats, thereby increasing its scope of use; the charging seat of the present invention also has the characteristics of simple structure, safety, and easy assembly and disassembly.

[0018] Additional aspects and advantages of the present invention will be given in part in the following description, which will become obvious from the following description, or may be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings described herein are used to provide a further understanding of the present invention, constitute a part of the present application, and do not constitute an improper limitation of the present invention. In the drawings:

[0020] Figure 1 A schematic diagram of a novel liquid cooling structure of a charging stand in an embodiment;

[0021] Figure 2 It is a cross-sectional view of the liquid cooling structure of the novel charging base in the embodiment;

[0022] Figure 3 for Figure 2 A is an enlarged schematic diagram;

[0023] Figure 4 This is an exploded schematic diagram of the liquid cooling structure of the novel charging base in the embodiment;

[0024] Figure 5 It is a cross-sectional view of the liquid cooling structure of the novel charging base in the embodiment at the transfer flow channel;

[0025] Figure 6 is a cross-sectional view of the insulating heat-conducting pressure plate located at the cooling channel in the embodiment;

[0026] Figure 7 Schematic diagram of the insulating heat-conducting pressing plate in the embodiment. DETAILED DESCRIPTION

[0027] In order to more fully understand the technical content of the present invention, the present invention will be further introduced and explained in conjunction with the accompanying drawings and specific embodiments below; it should be noted that the descriptions of "first", "second", etc. in this article are used to distinguish different components, etc., do not represent the order of precedence, nor do they limit the "first" and "second" to be different types.

[0028] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of the present invention.

[0029] Example

[0030] like Figures 1 to 7 As shown, a novel charging seat liquid cooling structure shown in this embodiment includes a shell 1 with a cavity 10 and a socket assembly 2 and a cable 3 respectively arranged at the front and rear ends of the shell 1, wherein two socket terminals 21 are arranged in the socket assembly 2, and the rear ends of the two socket terminals 21 extend backward into the cavity 10 and are suspended so as to be insulated from the shell, and there are two cables 3, and the front ends of the two cables 3 are inserted into the cavity 10 and are respectively connected with the two socket terminals 21 in a one-to-one correspondence; it also includes an insulating heat-conductive pressure plate 4 arranged in the shell 1, and two through holes 41 are arranged on the insulating heat-conductive pressure plate 4 for the socket terminals 21 to pass through in a one-to-one correspondence, and a cooling channel 42 is arranged around the two through holes 41 and used for circulating the cooling medium inside the insulating heat-conductive pressure plate 4, and there are two cooling channels and they are arranged symmetrically front and back, and the surrounding and front-to-back symmetrical arrangement is used to increase the contact area between the socket terminal and the cooling channel, and the heat dissipation effect can be improved; the insulating heat-conductive pressure plate 4 is also provided with an inlet 43 and an outlet 44 respectively connected with the two ends of the cooling channel 42.

[0031] The inlet 43 and the outlet 44 are both arranged at the bottom of the insulating heat-conducting pressure plate 4, and two conveying channels 5 connected with the inlet 43 and the outlet 44 are respectively arranged inside the bottom surface of the shell 1, and a sealing ring 6 is arranged between the bottom of the insulating heat-conducting pressure plate 4 and the shell 1 to ensure that the cooling medium does not leak; specifically, two bosses 45 are arranged at the bottom of the insulating heat-conducting pressure plate 4, and the inlet 43 and the outlet 44 are respectively arranged at the bottom surfaces of the two bosses 45, and a groove 101 for accommodating the two bosses 45 is arranged at the bottom of one side of the cavity 10, and one end opening of the conveying channel 5 is arranged in the groove 101 and connected with the inlet 43 or the outlet 44, and the sealing ring 6 is arranged between the boss 45 and the groove 101; in the above, through the cooperation of the boss and the groove, the position of the insulating heat-conducting pressure plate can be restricted and connected with the conveying channel, so as to avoid the problem of poor sealing caused by displacement of the insulating heat-conducting pressure plate after installation, and the downward pressure is applied by aligning the jack terminal so that the bottom of the boss is in close contact with the sealing ring to ensure the tightness of the seal.

[0032] In this embodiment, a raised support platform 102 is provided in the middle of the bottom of the groove 101, and the sealing ring 6 is mounted on the outer periphery of the support platform 102. The opening of the conveying channel 5 is provided at the upper end of the support platform and corresponds to the inlet 43 or the outlet 44, so that the inlet or the outlet is directly connected to the opening by utilizing the docking cooperation between the boss and the support platform.

[0033] A transfer nozzle 11 is provided on the outer side of the rear end of the shell 1 at a position corresponding to the delivery channel 5. The delivery channel 5 is transversely arranged inside the bottom surface of the shell 1 and extends into the transfer nozzle 11. The transfer nozzle is connected to an external hose or pipe for conveying a cooling medium. The delivery channel can also be used to dissipate heat from the shell, thereby reducing the temperature inside the shell and enhancing the heat dissipation effect.

[0034] In this embodiment, the insulating heat-conducting pressure plate 4 includes a cooling portion 401 that can be inserted into the rear end of the socket assembly 2 and a transition portion 402 that is mounted on the outer side of the rear end of the socket assembly 2. The cooling portion 401 and the transition portion 402 are made by integral molding; the through hole 41 and the cooling channel 42 are both provided on the cooling portion 401, and the transition portion 402 is provided with two transition channels 46 that are respectively connected to the two ends of the cooling channel 42, and the inlet 43 and the outlet 44 are provided at the bottom of the transition portion 402 and are respectively connected to the two transition channels 46 in a one-to-one correspondence; one side of the transition portion 402 is provided with an inwardly concave arc groove 406, and the two inner sides of the upper end of the arc groove are respectively connected to the middle of the two ends of the cooling portion 401 through the connecting pins 403, and the transition channel 46 passes through the connecting pins The cooling portion 401 is connected to the cooling channel at the rear, and a gap 407 is formed between the cooling portion 401 and the adapter portion 402 for being sleeved with the rear end of the socket assembly. In this way, when the insulating heat-conducting pressure plate is mounted on the socket assembly, the rear end of the socket assembly is inserted into the gap between the cooling portion and the adapter portion, and the rear end face of the socket assembly abuts against the connecting pin. Specifically, in order to avoid damage to the connecting pin due to excessive force, that is, to reduce the pressure on the connecting pin, a stop portion 404 is further provided at the upper end of the cooling portion, and a receiving groove 405 for accommodating the wall of the socket assembly is provided on the stop portion 404, so that after the insulating heat-conducting pressure plate is sleeved on the socket assembly, the rear end face of the socket assembly abuts against the receiving groove and is stopped, thereby reducing the pressure on the connecting pin.

[0035] A wire nose 31 is crimped at the front end of the cable 3. The wire nose 31 is placed above the socket terminal and fixed to the socket terminal 21 by screws. The wire nose and the socket terminal are fixed by screws to ensure the reliability of the connection and facilitate assembly and disassembly of the two. The cable 3 is also provided with a plastic head 7 through an interference fit sleeve. The plastic head 7 is threadedly connected to the shell 1, so that the cable is fixed to the rear end of the shell, which is convenient for assembly and disassembly of the cable. A self-locking nut 71 is also provided on the plastic head 7. The self-locking nut 71 is arranged on the outside of the shell 1. After the plastic head is fixed to the shell, the self-locking nut is tightened toward the shell, so as to lock the plastic head to prevent the plastic head from loosening and falling off, thereby ensuring the stability and reliability of the connection.

[0036] The upper end of the cavity 10 is open, which is convenient for assembling the jack terminal and the wire nose in the cavity. The upper end of the shell 1 is provided with a cover plate 8 covering the opening of the cavity 10, and a waterproof ring 81 is provided between the cover plate 8 and the shell 1, so that the sealing inside the cavity is good and meets the waterproof requirements.

[0037] The socket assembly 2 is fixed to the shell 1 by screws, and a waterproof ring (not shown in the figure) is provided between the socket assembly and the shell; the front end of the socket assembly 2 is hinged with a socket cover 22 for covering the plug interface, one end of the socket cover 22 is hinged to one side of the socket assembly, and the other side of the socket assembly is provided with a lock 23 for fixing the other end of the socket cover.

[0038] A grounding terminal 24 is also provided in the socket assembly 2. The rear end of the grounding terminal 24 passes through the insulating heat-conducting pressure plate and extends into the cavity 10. A wire nose 31 is also provided at the inner end of the grounding terminal 24. The wire nose 31 is connected and fixed to the shell 1. A detachable air valve 9 is also provided at the rear end of the shell 1. When the socket assembly is plugged into an external plug, there will be plug-in resistance between the two due to the influence of the enclosed space inside the charging seat. When the resistance is relatively large, the air valve can be unplugged and the air inside the shell can be discharged from the air valve, thereby reducing the plug-in resistance between the socket assembly and the plug, making the two plug-in smooth.

[0039] In this embodiment, mounting feet 12 for fixing are further provided at the four corners of the bottom of the housing 1, so as to facilitate the installation and fixing of the housing on corresponding external equipment (such as an electric car, a charging pile, etc.).

[0040] In this embodiment, the housing 1 is made of metal (steel, iron or aluminum alloy, etc.) and is integrally formed to facilitate heat dissipation.

[0041] The specific assembly steps of the above-mentioned charging dock are as follows:

[0042] (1) First, install the sealing ring in the groove in the cavity, and then install the insulating heat-conducting pressure plate on one side of the cavity and connect it with the groove;

[0043] (2) Install the socket assembly at the front end of the housing and fix it with screws. The socket terminal and the ground terminal in the socket terminal pass through the through hole on the insulating heat conductive pressing plate and extend backward;

[0044] (3) Install the plastic head on the cable, then install the cable on the rear end of the housing and secure it with the plastic head and self-locking nut;

[0045] (4) Use screws to connect the socket terminal to the wire nose on the cable;

[0046] (5) Use screws to fix the wire nose on the grounding terminal to the corresponding position of the housing;

[0047] (6) Install the waterproof ring on the housing, install the cover and fix it with screws;

[0048] (7) Finally, install the air vent valve into the corresponding position of the shell to complete the assembly.

[0049] In other embodiments of the present invention, during cooling, the cooling medium is injected into the cooling pipe through the adapter nozzle, and both adapter nozzles are connected to an external liquid cooling circulation device (i.e., a liquid cooling heat exchange device) (on a charging pile or an electric car) through a hose, so that the cooling medium circulates inside and outside, and then the heat inside the connector is brought out by the cooling medium for cooling.

[0050] In other embodiments of the present invention, the cooling medium may be silicone oil, compressed air or water.

[0051] Example 2

[0052] like Figure 6 to Figure 7 As shown, an insulating heat-conductive pressure plate 4 is shown in this embodiment, and two through holes 41 for the socket terminals to pass through are penetrated on the insulating heat-conductive pressure plate 4, and a cooling channel 42 is arranged around the two through holes 41 and used for circulating the cooling medium inside the insulating heat-conductive pressure plate 4, and there are two cooling channels and they are symmetrically arranged front to back. The surrounding and front to back symmetrical arrangement increases the contact area between the socket terminal and the cooling channel, which can improve the heat dissipation effect; the insulating heat-conductive pressure plate 4 is also provided with an inlet 43 and an outlet 44 respectively connected to the two ends of the cooling channel 42.

[0053] The insulating heat-conducting pressure plate 4 includes a cooling portion 401 and a transition portion 402. The through hole 41 and the cooling channel 42 are both provided on the cooling portion 401. The transition portion 402 is provided with two transition channels 46 (specifically, Figure 5 As shown in the figure, the inlet 43 and the outlet 44 are arranged at the bottom of the adapter 402 and are respectively connected to the two adapter channels 46 in a one-to-one correspondence; an inwardly concave arc groove 406 is provided on one side of the adapter 402, and the two inner sides of the upper end of the arc groove 406 are respectively connected to the middle of the two ends of the cooling part 401 through the connecting feet 403, and a gap 407 is formed between the cooling part 401 and the adapter 402.

[0054] The technical solutions provided by the embodiments of the present invention are introduced in detail above. Specific examples are used herein to illustrate the principles and implementation methods of the embodiments of the present invention. The description of the above embodiments is only applicable to help understand the principles of the embodiments of the present invention. At the same time, for those skilled in the art, according to the embodiments of the present invention, there will be changes in the specific implementation methods and application scopes. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A liquid cooling structure for a charging station, It is characterized in that The invention comprises a shell having a cavity, and a socket assembly and a cable respectively arranged at two ends of the shell, wherein a jack terminal is arranged in the socket assembly, the rear end of the jack terminal extends backward into the cavity, and the front end of the cable is inserted into the cavity and connected with the jack terminal; and further comprises an insulating heat-conductive pressing plate arranged in the shell, the insulating heat-conductive pressing plate is provided with a through hole for the jack terminal to pass through, the insulating heat-conductive pressing plate is provided with a cooling flow channel arranged around the through hole, and the insulating heat-conductive pressing plate is also provided with an inlet and an outlet respectively connected with two ends of the cooling flow channel; The insulating heat-conductive pressure plate includes a cooling part inserted into the rear end of the socket assembly and a transition part mounted on the outer side of the rear end of the socket assembly. The through hole and the cooling channel are both arranged on the cooling part. Two transition channels are respectively connected with the two ends of the cooling channel in the transition part. The inlet and the outlet are arranged at the bottom of the transition part and are respectively connected with the two transition channels one by one. An inwardly concave arc groove is provided on one side of the transition part. The two inner sides of the upper end of the arc groove are respectively connected with the middle of the two ends of the cooling part through connecting pins. The transition channel is connected with the cooling channel after passing through the connecting pin, and a gap is formed between the cooling part and the transition part.

2. The charging stand liquid cooling structure according to claim 1, It is characterized in that The inlet and the outlet are both arranged at the bottom of the insulating heat-conducting pressure plate, and two conveying channels respectively connected to the inlet and the outlet are arranged in the bottom surface of the shell, and a sealing ring is arranged between the bottom of the insulating heat-conducting pressure plate and the shell.

3. The charging stand liquid cooling structure according to claim 2, It is characterized in that Two bosses are provided at the bottom of the insulating heat-conducting pressure plate, and the inlet and the outlet are respectively provided on the bottom surfaces of the two bosses. A groove for accommodating the two bosses is provided at the bottom of one side of the cavity. One end opening of the conveying channel is provided in the groove and connected to the inlet or the outlet, and the sealing ring is provided between the boss and the groove.

4. The charging station liquid cooling structure according to claim 3, It is characterized in that A raised support platform is provided in the middle of the bottom of the groove, and the sealing ring is sleeved on the outer periphery of the support platform.

5. The liquid cooling structure of the charging station according to any one of claims 2 to 4, It is characterized in that A transfer nozzle is provided on the outer side of the shell at a position corresponding to the delivery channel. The delivery channel is transversely arranged in the bottom surface of the shell and extends into the transfer nozzle.

6. The charging stand liquid cooling structure according to claim 5, It is characterized in that The front end of the cable is provided with a wire nose, and the wire nose is fixed to the jack terminal by screws; the cable is sleeved with a plastic head, and the plastic head is threadedly connected to the shell. The plastic head is also provided with a self-locking nut, and the self-locking nut is arranged on the outside of the shell.

7. The charging stand liquid cooling structure according to claim 6, It is characterized in that The upper end of the cavity is open, and a cover plate covering the cavity is provided at the upper end of the shell, and a waterproof ring is provided between the cover plate and the shell; the socket assembly is sealed and fixed to the shell by screws, and a socket cover is hinged at the front end of the socket assembly; a grounding terminal is also provided in the socket assembly, and a wire nose extending inwardly into the cavity is provided at the rear end of the grounding terminal, and the wire nose is connected and fixed to the shell; a detachable air valve is also provided on the side of the shell.

8. An insulating heat-conducting pressing plate, It is characterized in that The insulating heat-conducting pressing plate is provided with at least one through hole for the jack terminal to pass through, the insulating heat-conducting pressing plate is provided with a cooling channel arranged around the through hole, and one side of the insulating heat-conducting pressing plate is also provided with an inlet and an outlet respectively connected to the two ends of the cooling channel; The insulating heat-conductive pressure plate includes a cooling part and a transition part, the through hole and the cooling channel are both arranged on the cooling part, and two transition channels respectively connected with the two ends of the cooling channel are arranged in the transition part, and the inlet and the outlet are arranged at the bottom of the transition part and are respectively connected with the two transition channels one by one; an inwardly concave arc groove is provided on one side of the transition part, and the two inner sides of the upper end of the arc groove are respectively connected with the middle of the two ends of the cooling part through connecting pins, and the transition channel is connected with the cooling channel after passing through the connecting pin, and a gap is formed between the cooling part and the transition part.

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