CN110228383A - A kind of New-type charge seat liquid cooling structure and insulating heat-conductive pressing plate - Google Patents

Abstract

The invention discloses a novel liquid-cooled structure of a charging stand and an insulating heat-conducting pressure plate. The novel liquid-cooled structure of a charging stand includes a housing with a cavity, and socket assemblies and cables separately arranged at both ends of the casing. The socket assembly A jack terminal is provided inside, 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; The insulating and heat-conducting pressing plate in the housing, the insulating and heat-conducting pressing plate is provided with a through hole for the jack terminal to pass through, the insulating and heat-conducting pressing plate is provided with a cooling flow channel arranged around the through hole, and the insulating and heat-conducting pressing plate The pressure plate is also provided with an inlet and an outlet respectively communicating with the two ends of the cooling channel. The structure of the invention can not affect the performance of the terminal while ensuring the heat dissipation performance, and has the characteristics of simple structure, compactness and safety.

Description

A new liquid-cooled structure of a charging stand and an insulating and heat-conducting pressure plate

technical field

The invention relates to the field of connectors, in particular to a novel liquid-cooled structure of a charging stand and an insulating and heat-conducting pressure plate.

Background technique

With the continuous popularization of electric vehicles, the charging equipment of this type of vehicles has become the core technology of this industry; and the charging connector of electric vehicles is an important part of the charging equipment. When charging electric vehicles for a long time, the terminals at the charging connection Because the charging current is relatively large, it will generate a certain amount of heat, and the original charging connector structure is tightly arranged, and it is not easy to dissipate heat. If the charging work is performed for a long time, the contact resistance of the charging connection terminal will increase, and the temperature rise will increase. Affect the performance of the terminal; continuous heating will also cause the aging of the plastic parts, which will eventually lead to the hidden danger of burning the charging connection port. At present, the charging connection terminals on the market generally dissipate heat naturally. Therefore, there is an urgent need to solve the heat dissipation problem of the charging connection terminals in the market. 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.

Contents of the invention

Aiming at the above-mentioned existing technical defects, the present invention provides a new liquid cooling structure of the charging stand, which can ensure the heat dissipation performance without affecting the performance of the terminal, and has the characteristics of simple structure, compactness and safety.

In order to solve the above-mentioned technical problems, the present invention provides a new type of liquid-cooled structure of the charging stand, which includes a housing with a cavity, and socket components and cables separately arranged at both ends of the housing, and jack terminals are arranged in the socket component , 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 to the jack terminal; it also includes an insulating A heat-conducting pressure plate, the insulated heat-conducting pressure plate is provided with a through hole through which the jack terminal passes, the insulated heat-conducting pressure plate is provided with a cooling flow channel surrounding the through hole, and the insulated heat-conducting pressure plate is also provided with a The two ends of the cooling channel are respectively connected to an inlet and an outlet.

Further, the inlet and the outlet are both arranged at the bottom of the insulating heat-conducting press plate, and two conveying flow channels respectively communicated with the inlet and the outlet are provided in the bottom surface of the housing, and the insulating heat-conducting press plate A sealing ring is provided between the bottom and the housing.

Further, the bottom of the insulating and heat-conducting pressure plate is provided with two bosses, the inlet and the outlet are respectively arranged on the bottom surfaces of the two bosses, and the bottom of one side of the cavity is provided with two bosses to accommodate the two bosses. The groove of the platform, one end opening of the conveying channel is arranged in the groove and connected with the inlet or the outlet, and the sealing ring is arranged between the boss and the groove.

Further, 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.

Further, an adapter nozzle is provided on the outer side of the housing at a position corresponding to the conveying channel, and the conveying channel is arranged transversely on the bottom surface of the housing and extends into the adapter nozzle.

Further, the insulating heat-conducting pressure plate includes a cooling part inserted into the rear end of the socket assembly and an adapter part sleeved on the outside of the rear end of the socket assembly, and the through holes and cooling flow channels are both provided in the cooling part Above, the transfer part is provided with two transfer flow passages respectively connected with both ends of the cooling flow passage, and the inlet and outlet are arranged at the bottom of the transfer part and connected to the two transfer flow passages respectively. One side of the transfer part is provided with an arc-shaped groove, and the inner sides of the upper end of the arc-shaped groove are respectively connected with the two ends of the cooling part, and the connection between the cooling part and the transfer part There is a gap between them.

Further, the front end of the cable is provided with a lug, and the lug is fixed to the jack terminal by a screw; the cable is covered with a plastic head, and the plastic head is screwed to the housing, The plastic head is also provided with a self-locking nut, and the self-locking nut is arranged on the outside of the housing.

Further, the upper end of the cavity is an opening, the upper end of the housing is provided with a cover plate that covers the cavity, and a waterproof ring is provided between the cover plate and the housing.

Further, the socket assembly is sealed and fixed on the housing by screws, and a socket cover is hinged at the front end of the socket assembly.

Further, the socket assembly is also provided with a grounding terminal, the rear end of the grounding terminal is provided with a lug extending inward into the cavity, and the lug is connected and fixed to the housing; The side of the housing is also provided with a detachable breather valve.

Also provided is an insulating and heat-conducting pressing plate, wherein at least one through hole for jack terminals to pass through is provided on the insulating and heat-conducting pressing plate, and a cooling channel arranged around the through-hole is arranged inside the insulating and heat-conducting pressing plate, and the insulating and heat-conducting pressing plate is provided with a One side of the heat conducting platen is also provided with an inlet and an outlet respectively communicating with the two ends of the cooling channel.

Further, the insulating and heat-conducting pressure plate includes a cooling part and an adapter part, the through holes and the cooling flow channel are both provided on the cooling part, and two A transfer channel connected at both ends, the inlet and outlet are located at the bottom of the transfer part and communicate with the two transfer channels respectively; one side of the transfer part is provided with an arc-shaped groove , the inner sides of the upper end of the arc-shaped groove are respectively connected to the two ends of the cooling part, and a gap is formed between the cooling part and the transfer part.

The present invention has the following beneficial effects:

In the present invention, an insulating and heat-conducting pressure plate is installed outside the socket terminal for heat conduction, and a cooling channel is provided inside the insulating and heat-conducting pressure plate for flowing cooling medium, which can ensure the heat dissipation performance without affecting the performance of the terminal, and the cooling flow The channel is set around the socket terminal, which increases the contact area between the socket terminal and the cooling flow channel, which can improve the heat dissipation effect, make the heat dissipation fast and not affect the performance of the terminal; The purpose of cooling is to reduce the corresponding cooling structure in the jack terminal and socket assembly, reduce the complexity of the overall structure and avoid affecting the performance of the jack terminal, and the external insulating and heat-conducting pressure plate can be replaced at any time, and can be Applying it to various charging stands increases its scope of use; the charging stand of the present invention also has the characteristics of simple structure, safety, and convenient assembly and disassembly.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, and will become apparent from the description, or may be learned by practice of the invention.

Description of drawings

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

Fig. 1 is the schematic diagram of the liquid cooling structure of the novel charging stand in the embodiment;

Fig. 2 is a cross-sectional view of the liquid cooling structure of the new charging stand in the embodiment;

Fig. 3 is the enlarged schematic view of A in Fig. 2;

Fig. 4 is an exploded schematic view of the liquid cooling structure of the new charging stand in the embodiment;

Fig. 5 is a cross-sectional view of the liquid cooling structure of the new charging stand in the embodiment at the transfer channel;

Fig. 6 is a cross-sectional view of the insulating and heat-conducting pressure plate located at the cooling channel in the embodiment;

Fig. 7 is a schematic diagram of the insulating and heat-conducting pressure plate in the embodiment.

Detailed ways

In order to fully understand the technical content of the present invention, the present invention will be further introduced and illustrated below in conjunction with the accompanying drawings and specific embodiments; For distinguishing different components, etc., it does not represent a sequence, nor does it limit that "first" and "second" are different types.

The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them; based on The embodiments of the present invention, and all other embodiments obtained by those skilled in the art without creative work, all belong to the protection scope of the present invention.

Example

As shown in Figures 1 to 7, a new charging stand liquid cooling structure shown in this embodiment includes a housing 1 with a cavity 10, and a socket assembly 2 and a cable 3 respectively arranged at the front and rear ends of the housing 1. , the socket assembly 2 is provided with two jack terminals 21, the rear ends of the two jack terminals 21 extend backward into the cavity 10 and are suspended in the air to insulate them from the housing. The cable 3 has two , and the front ends of the two cables 3 are inserted into the cavity 10 and respectively connected to the two jack terminals 21 in one-to-one correspondence; an insulating and heat-conducting pressing plate 4 is also included in the housing 1, and the insulating and heat-conducting pressing plate 4 is provided with two There are two through holes 41 through which the socket terminals 21 pass through one by one. The inside of the insulating and heat-conducting pressure plate 4 is provided with a cooling channel 42 which is arranged around the two through holes 41 and is used for circulating a cooling medium. There are two cooling channels in the shape of The front and rear symmetrical settings, using the surrounding and front and rear symmetrical settings, increase the contact area between the jack terminal and the cooling flow channel, which can improve the heat dissipation effect; the insulating heat conducting pressure plate 4 is also provided with the two ends of the cooling flow channel 42 respectively. Inlet 43 and outlet 44.

Both the inlet 43 and the outlet 44 are located at the bottom of the insulating heat-conducting pressure plate 4, and the inside of the bottom surface of the housing 1 is provided with two conveying channels 5 communicating with the inlet 43 and the outlet 44 respectively, and the bottom of the insulating heat-conducting pressing plate 4 is connected to the housing 1 A sealing ring 6 is arranged between them to ensure that the cooling medium does not leak; specifically, two bosses 45 are arranged at the bottom of the insulating heat-conducting plate 4, and the inlet 43 and the outlet 44 are respectively arranged on the bottom surface of the two bosses 45, and the cavity The bottom of one side of 10 is provided with a groove 101 for accommodating two bosses 45, and one end opening of the conveying channel 5 is arranged in the groove 101 and is connected with the inlet 43 or the outlet 44, and the sealing ring 6 is arranged between the boss 45 and the groove. Between the grooves 101; in the above, through the cooperation of the boss and the groove, the position of the insulating and heat-conducting pressure plate can be restricted and communicated with the conveying flow channel, so as to avoid the problem of poor sealing caused by the displacement of the insulating and heat-conducting pressure plate after installation, and Use the socket terminal alignment to apply downward pressure, so that the bottom of the boss is in close contact with the sealing ring to ensure the tightness of the seal.

In this embodiment, a raised support platform 102 is provided in the middle of the bottom of the groove 101, the sealing ring 6 is set on the outer periphery of the support platform 102, and the opening of the delivery channel 5 is set at the upper end of the support platform and connected to the inlet 43 or the outlet 44. Correspondingly, the inlet or outlet is directly connected to the opening by using the butt fit between the boss and the support platform.

The outside of the rear end of the housing 1 is provided with an adapter nozzle 11 at a position corresponding to the conveying channel 5, and the conveying channel 5 is horizontally arranged inside the bottom surface of the housing 1 and extends into the adapter nozzle 11. The external hose or pipe connection for transporting the cooling medium can also use the delivery channel to dissipate heat from the shell, reduce the temperature inside the shell, and enhance the heat dissipation effect.

In this embodiment, the insulating and heat-conducting pressure plate 4 includes a cooling portion 401 that can be inserted into the rear end of the socket assembly 2 and an adapter portion 402 that is sleeved outside the rear end of the socket assembly 2. The adapter portion 402 of the cooling portion 401 is made by integral molding; Both the through hole 41 and the cooling channel 42 are provided on the cooling part 401, and the transfer part 402 is provided with two transfer channels 46 respectively communicating with both ends of the cooling channel 42, and the inlet 43 and the outlet 44 are arranged on the transfer part The bottom of the part 402 is in one-to-one communication with the two transfer channels 46; one side of the transfer part 402 is provided with a concave arc-shaped groove 406, and the two inner sides of the upper end of the arc-shaped groove are respectively connected to the cooling channel through the connecting feet 403. The two ends of the part 401 are connected in the middle, and the transfer flow channel 46 communicates with the cooling flow channel after passing through the connecting pin, and a gap 407 is formed between the cooling part 401 and the transfer part 402, which is used to socket with the rear end of the socket assembly , so that when the insulating and heat-conducting pressure plate is set on the socket assembly, the rear end of the socket assembly is inserted into the gap between the cooling part and the transfer part, and the rear end face of the socket assembly is in contact with the connecting pin; specifically, in order to avoid connection Excessive force on the feet leads to damage, that is, to reduce the pressure on the connecting feet. A stopper 404 is also provided at the upper end of the cooling part, and a receiving groove 405 for accommodating the wall surface of the socket assembly is provided on the stopper 404, so as to improve insulation and heat conduction. After the pressing plate is socketed with the socket assembly, the rear end surface of the socket assembly abuts against the accommodating groove and is blocked, thereby reducing the pressure on the connecting pin.

The front end of the cable 3 is crimped with a wire lug 31, the wire lug 31 is placed above the jack terminal and fixed to the jack terminal 21 by screws, and the wire lug and the jack terminal are fixed by screws to ensure the reliability of the connection, and It is convenient for the assembly and disassembly of the two; the cable 3 is also provided with a plastic head 7 through an interference fit, and the plastic head 7 is threadedly connected with the shell 1, so that the cable is fixed at the rear end of the shell, which is convenient for the assembly of the cable and disassembly; the plastic head 7 is also provided with a self-locking nut 71, the self-locking nut 71 is arranged on the outside of the housing 1, after the plastic head is fixed on the housing, the self-locking nut is tightened to the housing, thereby the plastic head Lock it tightly to prevent the plastic head from loosening and falling off, ensuring the stability and reliability of the connection.

The upper end of the cavity 10 is an opening, which is convenient for assembling the jack terminal and the wire lug in the cavity. There is a waterproof ring 81 between them, so that the sealing performance in the cavity is good, and the waterproof requirement is met.

The socket assembly 2 is fixed on the housing 1 by screws, and a waterproof ring (not shown) is provided between the socket assembly and the housing; the front end of the socket assembly 2 is hinged with a socket cover 22 for covering the plug-in interface, and the socket One end of the 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.

The socket assembly 2 is also provided with a grounding terminal 24, the rear end of the grounding terminal 24 extends into the cavity 10 after passing through the insulating heat-conducting pressure plate, and the inner end of the grounding terminal 24 is also provided with a lug 31, which is connected to the housing The body 1 is connected and fixed; the rear end of the shell 1 is also provided with a detachable breathable valve 9. When the socket assembly is plugged into the external plug, there will be resistance to insertion between the two due to the influence of the closed space inside the charging base. When the resistance is relatively large, the air inside the casing is discharged from the vent valve by pulling out the breather valve, thereby reducing the resistance of the socket assembly and the plug to be inserted smoothly.

In this embodiment, the four corners of the bottom of the housing 1 are provided with mounting feet 12 for fixing, so as to facilitate the installation and fixing of the housing on corresponding external devices (such as electric vehicles, charging piles, etc.).

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

The specific assembly steps of the above charging stand are as follows:

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

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

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

(4) Connect and fix the socket terminal with the lug on the cable with screws;

(5) Fix the wire lug on the grounding terminal to the corresponding position of the housing with screws;

(6) Install the waterproof ring on the shell, install the cover plate and fix it with screws;

(7) Finally, install the breather valve into the corresponding position of the casing to complete the assembly.

In other embodiments of the present invention, during cooling, the cooling medium is injected into the cooling pipe through the adapter nozzle, and the two adapter nozzles are connected to the external (charging pile or electric vehicle) liquid cooling circulation device (that is, the liquid cooling cycle device) through the hose. Cold heat exchange device) connection, so that the cooling medium circulates inside and outside, and then the heat inside the connector is taken out by the cooling medium for cooling.

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

Example 2

As shown in Fig. 6 to Fig. 7, in the insulating and heat-conducting pressing plate 4 shown in this embodiment, two through-holes 41 are provided through the insulating and heat-conducting pressing plate 4 for jack terminals to pass through one by one. Inside, there are cooling channels 42 arranged around two through holes 41 and used for the circulation of cooling medium, and there are two cooling channels arranged symmetrically front and back, and the surrounding and symmetrical settings increase the size of the jack terminal and The contact area of the cooling channel can improve the heat dissipation effect; the insulating and heat-conducting pressure plate 4 is also provided with an inlet 43 and an outlet 44 respectively communicating with the two ends of the cooling channel 42 .

The insulating and heat-conducting pressure plate 4 includes a cooling portion 401 and an adapter portion 402. Both the through hole 41 and the cooling flow channel 42 are arranged on the cooling portion 401. The adapter portion 402 is provided with two transfer ports that communicate with the two ends of the cooling flow channel 42 respectively. Connect flow channel 46 (as shown in Figure 5 specifically), inlet 43 and outlet 44 are arranged at the bottom of transfer part 402 and communicate with two transfer flow channels 46 respectively; One side of transfer part 402 is provided with The concave arc-shaped groove 406 , the inner sides of the upper end of the arc-shaped groove 406 are respectively connected to 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 transfer part 402 .

The technical solutions provided by the embodiments of the present invention have been introduced in detail above, and the principles and implementation modes of the embodiments of the present invention have been explained by using specific examples in this paper. The descriptions of the above embodiments are only applicable to help understand the embodiments of the present invention At the same time, for those of ordinary skill in the art, according to the embodiment of the present invention, there will be changes in the specific implementation and application scope. In summary, the content of this specification should not be construed as limiting the present invention.

Claims (10)

1. A new liquid-cooled structure of a charging stand, characterized in that it includes a housing with a cavity, and socket assemblies and cables separately arranged at both ends of the housing, the socket assembly is provided with jack terminals, and the socket assembly The rear end of the hole terminal extends backward into the cavity, and the front end of the cable is inserted into the cavity and connected to the jack terminal; an insulating and heat-conducting pressure plate is also included in the housing, so The insulating and heat-conducting pressing plate is provided with a through hole through which the socket terminal passes, and the insulating and heat-conducting pressing plate is provided with a cooling flow channel arranged around the through-hole, and the insulating and heat-conducting pressing plate is also provided with the cooling flow channel. The entrance and exit connected to the two ends of the road respectively. 2. The new liquid-cooled structure of the charging stand according to claim 1, wherein the inlet and the outlet are both arranged at the bottom of the insulating and heat-conducting pressure plate, and the bottom surface of the housing is provided with two The inlet and the outlet are connected to a conveying channel, and a sealing ring is provided between the bottom of the insulating heat-conducting plate and the housing. 3. The new liquid-cooled structure of the charging stand according to claim 2, characterized in that, the bottom of the insulating and heat-conducting pressure plate is provided with two bosses, and the inlet and outlet are respectively arranged on the bottom surfaces of the two bosses , the bottom of one side of the cavity is provided with a groove for accommodating two of the bosses, one end of the conveying flow channel is opened in the groove and connected with the inlet or outlet, the sealing ring It is arranged between the boss and the groove. 4. The new liquid-cooled structure of the charging stand according to claim 3, wherein 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 new liquid cooling structure of the charging stand according to any one of claims 1-4, characterized in that, an adapter nozzle is provided on the outer side of the housing at a position corresponding to the delivery channel, and the delivery channel The flow channel is arranged laterally in the bottom surface of the housing and extends into the adapter nozzle. 6. The new liquid cooling structure of the charging stand according to claim 5, characterized in that the insulating and heat-conducting pressure plate includes a cooling part inserted into the rear end of the socket assembly and an adapter sleeved on the outside of the rear end of the socket assembly part, the through hole and the cooling flow channel are both arranged on the cooling part, and the transfer part is provided with two transfer flow channels respectively communicating with the two ends of the cooling flow channel, and the inlet and outlet It is located at the bottom of the transfer part and communicates with the two transfer channels respectively; one side of the transfer part is provided with an arc-shaped groove, and the inner sides of the upper end of the arc-shaped groove are respectively connected with the Two ends of the cooling part are connected, and a gap is formed between the cooling part and the transfer part. 7. The new liquid-cooled structure of the charging stand according to claim 6, characterized in that, the front end of the cable is provided with a lug, and the lug is fixed to the jack terminal by a screw; A plastic head is provided, and the plastic head is threadedly connected with the housing, and a self-locking nut is also provided on the plastic head, and the self-locking nut is arranged on the outside of the housing. 8. The new charging stand liquid cooling structure according to claim 7, characterized in that the upper end of the cavity is an opening, the upper end of the housing is provided with a cover plate that covers the cavity, and the cover A waterproof ring is provided between the plate and the housing; the socket assembly is sealed and fixed on the housing 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 , the rear end of the ground terminal is provided with a wire lug extending inward into the cavity, and the wire lug is connected and fixed with the housing; a detachable breather valve is also provided on the side of the housing . 9. An insulating and heat-conducting press plate, characterized in that at least one through hole for jack terminals to pass through the insulating and heat-conducting press plate is provided inside the insulating and heat-conducting press plate with a cooling channel arranged around the through hole, One side of the insulating and heat-conducting pressure plate is also provided with an inlet and an outlet respectively communicating with the two ends of the cooling channel. 10. The insulating and heat-conducting pressing plate according to claim 9, characterized in that, the insulating and heat-conducting pressing plate comprises a cooling part and a transfer part, the through holes and the cooling flow channels are both arranged on the cooling part, and the transferring part There are two transfer channels connected to both ends of the cooling channel in the connection part, and the inlet and outlet are arranged at the bottom of the transfer part and communicate with the two transfer channels respectively. ; One side of the transfer part is provided with an arc-shaped groove, and the 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 transfer part.