WO2022068337A1

WO2022068337A1 - Heat dissipation module, and charging gun and charging base comprising same

Info

Publication number: WO2022068337A1
Application number: PCT/CN2021/108304
Authority: WO
Inventors: 刘悦; 钟荣栋; 李同兵
Original assignee: 东莞市趣电智能科技有限公司
Priority date: 2020-09-30
Filing date: 2021-07-24
Publication date: 2022-04-07

Abstract

The present invention relates to the technical field of new energy, and discloses a heat dissipation module, comprising a housing, as well as a heat dissipation member and a ventilation device that are provided inside of the housing. The heat dissipation member is provided with a heat dissipation hole, through which a power supply terminal passes, and a heat dissipation air duct, which extends along the circumference of the heat dissipation hole and surrounds the heat dissipation hole. The ventilation device is used to drive external air to flow through the heat dissipation air duct and then be discharged. The housing is provided with a first air port and a second air port through which air passes. On the basis of the described structure, under the drive of the ventilation device, an air flow that surrounds the power supply terminal 360° can be formed in the heat dissipation air duct. Therefore, there will be no dead space of heat dissipation around the power supply terminal, and heat generated by the power supply terminal can be fully taken away by the airflow without a large amount of accumulation, thereby achieving effective cooling. Also disclosed are a charging gun and a charging base, both of which adopt the described heat dissipation module and have the advantages of excellent heat dissipation performance, high current capacity, high safety factor, low failure rate, long service life, and so on.

Description

A heat dissipation module and a charging gun and a charging base including the same

technical field

The present invention relates to the technical field of new energy, in particular to a heat dissipation module, a charging gun and a charging stand including the same.

Background technique

With the enhancement of people's awareness of environmental protection and the gradual improvement of related technologies, electric vehicles are beginning to be accepted by more and more consumers. However, the problem of long charging time has not been solved, which hinders the further development of electric vehicles. Studies have shown that the root cause of the above problems is that a large amount of heat will accumulate at the crimping point between the charging connector and the cable during charging, and the existing charging connector has a limited heat dissipation capacity and cannot effectively dissipate the heat generated when a large current passes through. The accumulated heat and high temperature can easily cause the charging connector to fail or even burn, which seriously affects the safety of charging, thus limiting the size of the current and causing the charging time to be too long.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a heat dissipation module which is applied to a charging connector and has a good heat dissipation effect, and a charging gun and a charging base including the same.

In order to achieve the above purpose, the present invention provides a heat dissipation module applied to a charging connector, which includes a casing, a heat dissipation member and a ventilation device disposed inside the casing, and the heat dissipation member has a heat dissipation member for the power supply terminal to pass through. A heat dissipation hole and a heat dissipation air duct extending along the circumference of the heat dissipation hole and surrounding it, the ventilation device is used to drive the external air and make it flow through the heat dissipation air duct and then discharge it, and the housing has an air supply for the air to pass through. The first air outlet and the second air outlet.

In some embodiments of the present application, the heat dissipation holes are set to two, the two are arranged side by side and spaced apart, and the heat dissipation air ducts are respectively provided on the periphery of the two heat dissipation holes; The symmetry center plane is denoted as the first reference plane, and the ventilation device intersects the first reference plane.

In some embodiments of the present application, the ventilation device includes two fans arranged symmetrically with respect to the first reference plane.

In some embodiments of the present application, two of the first air vents are provided, and the two fans are respectively provided at the two first air vents.

In some embodiments of the present application, the second tuyere is set to two, and the two are respectively set on both sides of the first reference surface.

In some embodiments of the present application, two of the second tuyere are symmetrically arranged with respect to the first reference plane.

In some embodiments of the present application, a plane passing through the centerlines of the two heat dissipation holes is denoted as the second reference plane, and the ventilation device and the second air outlet are respectively disposed on two sides of the second reference plane. side.

In some embodiments of the present application, the intersection line of the first reference surface and the second reference surface is the center line of the housing; the center line of the second tuyere vertically intersects the center line of the housing The center line, and the range of the included angle α between the center line of the second tuyere and the second reference surface is: 0°<α≤80°.

In some embodiments of the present application, the range of the length L of the second tuyere in the axial direction of the housing is: 0<L≤M-2mm, where M is the axial length of the housing.

In some embodiments of the present application, the range of the length T of the second tuyere in the circumferential direction of the casing is: 10mm≤T≤(1/4)N, where N is the circumferential direction of the casing length.

In some embodiments of the present application, the heat dissipation member has a fin unit disposed outside the heat dissipation hole, and the fin unit is composed of a plurality of fins arranged along the axial direction of the heat dissipation hole. The cooling air duct is formed between two adjacent fins, and the ventilation device is provided outside the fin unit.

In some embodiments of the present application, the fin unit has a groove, and the ventilation device is provided in the groove.

In some embodiments of the present application, the heat dissipation member includes an insulating sleeve and a heat dissipation frame disposed outside the insulating sleeve, a through hole of the insulating sleeve is the heat dissipation hole, and the heat dissipation frame includes the fin unit.

In some embodiments of the present application, the heat dissipation frame further includes an installation sleeve sleeved on the outside of the insulating sleeve, and the fins sleeved on the outside of the installation sleeve.

In some embodiments of the present application, both the fins and the mounting sleeve are made of metal.

In some embodiments of the present application, the insulating sleeve is made of ceramics.

In some embodiments of the present application, the heat dissipation frame further includes a fixing plate sleeved on the outside of the installation sleeve, and the fixing plate is arranged on the front side and/or the rear side of the fin unit; the fins The sheet unit and the fixing plate are connected together by bolts penetrating both.

In some embodiments of the present application, the fins are provided on the outer side surface of the insulating sleeve, and the two are connected as a whole; the materials of the fins and the insulating sleeve are both ceramics.

In some embodiments of the present application, the surface of the heat dissipation frame and/or the insulating sleeve is provided with a graphene coating or a nanocarbon coating.

Based on the same purpose, the present invention also provides a charging gun, which includes the above heat dissipation module.

Based on the same purpose, the present invention also provides a charging stand, which includes the above-mentioned heat dissipation module.

The present invention provides a heat dissipation module applied to a charging connector. Compared with the prior art, its beneficial effects are:

Driven by the ventilation device, an airflow that surrounds the power supply terminals 360° can be formed in the cooling air duct, so that there will be no dead space for heat dissipation around the power supply terminals. This in turn achieves more effective cooling. In this way, compared with the heat dissipation structure that can only generate airflow that partially or partially surrounds the power supply terminal, the heat dissipation module provided by the present invention can more effectively reduce the high temperature caused by the current passing through the charging connector, and improve its safety performance. It reduces its failure rate, prolongs its service life, and more importantly, enables the charging connector to withstand a larger current, thereby greatly shortening the charging time and improving the charging efficiency when it is used.

The present invention also provides a charging gun and a charging stand, both of which use the above-mentioned heat dissipation module, and thus have the advantages of good heat dissipation performance, high current capability, high safety factor, low failure rate, and long service life.

Description of drawings

FIG. 1 is one of the schematic diagrams of the assembly of a heat dissipation module and a power supply terminal according to an embodiment of the present invention;

FIG. 2 is the second schematic diagram of the assembly of the heat dissipation module and the power supply terminal according to the embodiment of the present invention;

3 is a schematic structural diagram of a heat dissipation module according to an embodiment of the present invention;

4 is a schematic diagram of a flow direction of a heat dissipation airflow according to an embodiment of the present invention;

5 is a schematic end view of a heat dissipation module according to an embodiment of the present invention;

FIG. 6 is a schematic structural diagram of a heat sink according to an embodiment of the present invention.

In the figure: 10, shell; 101, first air outlet; 102, second air outlet; 11, heat sink; 111, heat dissipation hole; 112, heat dissipation air duct; 113, insulating sleeve; 114, fin unit; 1141, groove; 115, installation sleeve; 116, fixing plate; 12, ventilation device; 121, fan; 13, baffle plate; 2, power supply terminal; a, first reference surface; b, second reference surface.

Detailed ways

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

It should be understood that the terms "first" and "second" are only used for descriptive purposes to distinguish the same type of technical features, and should not be construed as indicating or implying the relative importance, order and quantity of these technical features, that is, , the "first" technical feature can be referred to as the "second" technical feature, and the "second" technical feature can also be referred to as the "first" technical feature. A technical feature may explicitly or implicitly include one or more of the technical feature. Also, unless stated otherwise, "plurality" means two or more.

It should be emphasized that, in the description of this application, unless otherwise expressly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection Connection, or integral connection; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be internal communication between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood in specific situations.

It should be noted that the charging connector in the present invention refers to a device having both physical connection and electrical connection functions, such as a charging gun, a charging base, a plug, a socket, and the like.

Referring to FIGS. 1 to 4 , an embodiment of the present invention provides a heat dissipation module applied to a charging connector, which includes a cylindrical casing 10 , a heat dissipation member 11 and a ventilation device 12 disposed inside the casing 10 . The heat dissipation member 11 There is a heat dissipation hole 111 for the power supply terminal 2 to pass through and a heat dissipation air duct 112 extending along the circumferential direction of the heat dissipation hole 111 and surrounding it. The body 10 has a first tuyere 101 and a second tuyere 102 for air to pass through; wherein, the power supply terminal 2 is a DC power terminal or an AC power terminal.

Based on the above structure, under the driving of the ventilation device 12, an airflow that surrounds the power supply terminal 2 360° can be formed in the heat dissipation air duct 112, so that there is no heat dissipation dead angle around the power supply terminal 2, and the heat generated by the power supply terminal 2 can be The airflow is fully taken away without a large amount of accumulation, thereby achieving more effective cooling. In this way, compared with the heat dissipation structure that can only generate airflow that half or partially surrounds the power supply terminal 2, the heat dissipation module provided by the present invention can more effectively reduce the high temperature caused by the current passing through the charging connector, and improve its safety performance. , reduce its failure rate, prolong its service life, and more importantly, enable the charging connector to withstand a large current, thereby greatly shortening the charging time and improving the charging efficiency when it is used.

Optionally, as shown in FIG. 1 to FIG. 4 , in this embodiment, the ventilation device 12 is arranged at the first air outlet 101; during operation, the outside air enters the cooling air duct 112 from the second air outlet 102, and then flows from the second air outlet 102 to the cooling air duct 112. A tuyere 101 is discharged, that is, the ventilation device 12 is in a suction mode. It should be noted that, in other embodiments, the ventilation device 12 may also be in a blowing mode, that is, the external air enters the cooling air duct 112 from the first air outlet 101 and is then discharged from the second air outlet 102 .

Optionally, as shown in FIGS. 1 to 4 , in this embodiment, there are two heat dissipation holes 111 , which are arranged side by side and spaced apart. , a heat dissipation air duct 112 passes between the two heat dissipation holes 111 ; the power supply terminals 2 are also set to two, and the two are respectively penetrated in the two heat dissipation holes 111 . Of course, in other embodiments, the two heat dissipation holes 111 may also share the same set of heat dissipation air ducts 112 , that is, no heat dissipation air duct 112 passes between the two heat dissipation holes 111 .

Optionally, as shown in FIGS. 1 and 5 , in this embodiment, the symmetrical center planes of the two heat dissipation holes 111 are denoted as the first reference plane a, and the ventilation device 12 intersects the first reference plane a, that is, Said, the ventilation device 12 and the two heat dissipation holes 111 are arranged in a "pin" shape on the cross section of the cooling module; the ventilation device 12 includes two fans 121, which are respectively arranged on both sides of the first reference surface a, corresponding to , the first tuyere 101 is also set to two, and the two fans 121 are respectively set at the two first tuyere 101 . Based on this, stable and large airflow can be formed in the heat dissipation air ducts 112 of the two heat dissipation holes 111 to ensure the heat dissipation effect; in addition, the parallel arrangement of the two fans 121 also shortens the axial length of the charging connector to a certain extent. , making it smaller and requiring less space. Preferably, the two fans 121 are arranged symmetrically with respect to the first reference plane a, and correspondingly, the two first air vents 101 are also arranged symmetrically with respect to the first reference plane a.

Further, in order to improve the heat dissipation efficiency and ensure that the flow of the heat dissipation air ducts 112 of the two heat dissipation holes 111 is balanced at the same time, the second air ports 102 are set to two, and the two are respectively located on both sides of the first reference surface a; preferably, The two second air vents 102 are symmetrically arranged with respect to the first reference plane a.

Further, the plane passing through the center lines of the two heat dissipation holes 111 is denoted as the second reference plane b, the intersection line of the first reference plane a and the second reference plane b is the center line of the casing 10 , and the casing 10 is a circle. In a cylindrical shape, the center line of the second tuyere 102 vertically intersects with the center line of the housing 10 .

In order to find the best position of the second air outlet 102, the research and development personnel conducted a comparative experiment on a plurality of charging guns using the heat dissipation module provided by the present invention. The difference in structure is only in the position of the second air outlet 102. It was carried out in the environment of 25°C, and the current during the experiment was 250A. The experimental data obtained are as follows:

Table 1

It can be seen from Table 1 that when the second tuyere 102 and the ventilation device 12 are respectively arranged on both sides of the second reference surface b, the temperature of the power supply terminal 2 is the lowest, which indicates that this solution has the best heat dissipation effect. Based on this, in this embodiment, the second tuyere 102 and the ventilation device 12 are respectively provided on both sides of the second reference surface b. Since the two second tuyere ports 102 are respectively disposed on both sides of the first reference surface a, as shown in FIG. 4 , the range of the angle α between the centerline of the second tuyere port 102 and the second reference surface b is preferably: 0 °<α≤80°.

Further, in addition to the influence of the position of the second tuyere 102 on the heat dissipation effect, the size of the second tuyere 102 also has a certain influence. In this embodiment, the range of the length L of the second tuyere 102 in the axial direction of the casing 10 is: 0<L≤M-2mm, where M is the axial length of the casing 10; The range of the length T of the body 10 in the circumferential direction is: 10 mm≦T≦(1/4)N, where N is the circumferential length of the casing 10 . Based on the above dimensions, the second air outlet 102 can ensure that the cooling air duct 112 has a sufficiently large air volume.

It should be noted that the first tuyere 101 and the second tuyere 102 in the present invention refer to structures with ventilation functions, and they have various forms, such as open form, honeycomb hole form, grid hole form, and the like.

Optionally, referring to FIG. 1 , FIG. 3 and FIG. 6 , in this embodiment, the heat sink 11 includes an insulating sleeve 113 and a heat dissipation frame disposed outside the insulating sleeve 113 , and the insulating sleeves 113 are arranged side by side and spaced apart The two are connected together by a heat dissipation frame, and the through hole of the insulating sleeve 113 is the heat dissipation hole 111; A cooling air duct 112 is formed between two adjacent fins; the ventilation device 12 is arranged outside the fin unit 114 . It should be noted that, in other embodiments, the two insulating sleeves 113 may also be provided with a heat dissipation frame respectively, and the two heat dissipation frames are not connected to each other.

Further, the heat sink further includes an installation sleeve 115, the installation sleeve 115 is sleeved on the outside of the insulating sleeve 113, and the fins are sleeved on the outside of the installation sleeve 115, wherein the fins and the installation sleeve 115 are made of metal , the material of the insulating sleeve 113 is ceramic. In order to realize the fixing of the fins, the heat dissipation frame further includes a fixing plate 116 sleeved on the outside of the installation sleeve 115, and the fixing plate 116 is arranged on the front side of the fin unit 114; connected together; in addition, the surface of the heat dissipation frame and/or the insulating sleeve 113 is provided with a graphene coating or a nano carbon coating, so as to improve the heat dissipation effect of the heat dissipation member 11 .

It should be pointed out that, in other embodiments, the fixing plate 116 may also be disposed on the rear side of the fin unit 114, or may be disposed on both the front and rear sides of the fin unit 114 at the same time; in addition, the heat sink 11 may also be a One-piece structure, that is, the materials of the fins and the insulating sleeve 113 are both ceramics, the fins are arranged on the outer side of the insulating sleeve 113, and the two are connected as a whole.

Optionally, as shown in FIG. 1 , in this embodiment, the heat dissipation module further includes a baffle 13 sheathed outside the insulating sleeve 113 , and the baffle 13 is disposed on the front side and/or the rear side of the heat dissipation frame. In this way, the baffle 13 and the housing 10 together form a relatively closed space, which can prevent the airflow in the heat dissipation air duct 112 from spreading, and enhance the heat dissipation effect.

Optionally, referring to FIG. 1 and FIG. 3 , in this embodiment, the fin unit 114 has a groove 1141 , and the ventilation device 12 is provided in the groove 1141 . Based on this, the radial dimension of the heat dissipation module is small enough to minimize the volume of the charging connector, make its shape more compact, and reduce its space requirement, so as to facilitate its installation and use. Especially when the cooling module is applied to the charging stand, it enables the charging stand to be disassembled and assembled directly from the outside of the charging car body, which meets the requirements of zero-obstacle operation and greatly reduces the difficulty of overhauling and replacing the charging stand.

In addition, an embodiment of the present invention also provides a charging gun and a charging stand, both of which use the above-mentioned heat dissipation module. Compared with the prior art, the charging gun and the charging base have the advantages of good heat dissipation performance, high current capability, high safety factor, low failure rate, long service life and the like.

The above are only the preferred embodiments of the present invention. It should be pointed out that for those skilled in the art, without departing from the technical principle of the present invention, several improvements and substitutions can be made. These improvements and substitutions It should also be regarded as the protection scope of the present invention.

Claims

A heat dissipation module, applied to a charging connector, is characterized in that it includes a casing, a heat dissipation member and a ventilation device arranged inside the casing, the heat dissipation member has a heat dissipation hole for the power supply terminal to pass through and along the A heat dissipation air duct extending in the circumferential direction of the heat dissipation hole and surrounding it, the ventilation device is used to drive the external air and make it flow through the heat dissipation air duct and then discharge it, and the housing has a first air outlet for the air to pass through and a second air outlet. Two vents.
The heat dissipation module according to claim 1, characterized in that, the heat dissipation holes are set to two, and the two are arranged side by side and spaced apart, and the heat dissipation air ducts are respectively provided on the periphery of the two heat dissipation holes; The symmetrical center plane of the heat dissipation hole is denoted as a first reference plane, and the ventilation device intersects with the first reference plane.
The heat dissipation module of claim 2, wherein the ventilation device comprises two fans, which are symmetrically arranged with respect to the first reference plane.
The heat dissipation module according to claim 3, wherein two of the first air vents are provided, and two of the fans are respectively provided at the two first air vents.
3. The heat dissipation module of claim 2, wherein the second air vents are set to two, and the two are respectively set on both sides of the first reference surface.
The heat dissipation module according to claim 5, wherein the two second air vents are symmetrically arranged with respect to the first reference plane.
The heat dissipation module according to claim 5, wherein a plane passing through the center lines of the two heat dissipation holes is denoted as a second reference plane, and the ventilation device and the second air outlet are respectively arranged on the second reference plane. Two sides of the reference plane.
The heat dissipation module according to claim 7, wherein the intersection line of the first reference surface and the second reference surface is the center line of the casing; the center line of the second air outlet vertically intersects at The center line of the casing, and the included angle α between the center line of the second air outlet and the second reference surface is in the range of 0°<α≤80°.
The heat dissipation module according to claim 8, wherein the range of the length L of the second tuyere in the axial direction of the casing is: 0<L≤M-2mm, wherein M is the casing the axial length.
The heat dissipation module according to claim 8, wherein the range of the length T of the second tuyere in the circumferential direction of the casing is: 10mm≤T≤(1/4)N, wherein N is the Circumferential length of the housing.
The heat dissipation module according to any one of claims 1 to 10, wherein the heat dissipation member has a fin unit disposed outside the heat dissipation hole, and the fin unit is composed of a plurality of fin units along the heat dissipation hole. The fins are arranged in the axial direction, the cooling air duct is formed between every two adjacent fins, and the ventilation device is arranged outside the fin unit.
The heat dissipation module according to claim 11, wherein the fin unit has a groove, and the ventilation device is arranged in the groove.
The heat dissipation module according to claim 11, wherein the heat dissipation member comprises an insulating sleeve and a heat dissipation frame disposed outside the insulating sleeve, and the through hole of the insulating sleeve is the heat dissipation hole, The heat dissipation frame includes the fin unit.
The heat dissipation module according to claim 13, wherein the surface of the heat dissipation frame and/or the insulating sleeve is provided with a graphene coating or a nano carbon coating.
A charging gun, characterized by comprising the heat dissipation module according to any one of claims 1-14.
A charging stand, characterized by comprising the heat dissipation module according to any one of claims 1-14.