Liquid cooling charging seat with external cooling module

Abstract

The utility model discloses a liquid cooling charging seat with an external cooling module. The liquid cooling charging seat comprises a housing, a cooling module, and a plurality of liquid cooling cables and power terminals which are fixed in the housing. An annular cooling groove is formed in the peripheral wall of the shell. The inner wall of an annular inner heat conduction plate of the cooling groove is fixedly connected with a plurality of heat conduction pieces. The tail ends of liquid passing pipes of the liquid cooling cables are positioned on two sides of the shell; the rear connection end of each power terminal is fixedly connected with the front connection end of one liquid cooling cable, and the rear connection end or the front connection end is attached to the inner wall of the heat conduction piece; a liquid cooling shell of the cooling module is detachably sleeved outside the shell, the liquid cooling shell seals a cooling groove to form a heat exchange cooling cavity, and symmetrical liquid inlet and outlet nozzles at the two ends of the liquid cooling shell are connected with two liquid passing pipes. The utility model has the advantages of no liquid leakage risk, rapid heat exchange of large-flow cooling liquid, safe, efficient and rapid charging, and prolonged service life of the charging seat.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of electrical connection, especially relates to a liquid cooling charging stand of external cooling module. BACKGROUND

[0002] The current new energy industry develops rapidly, especially new energy vehicles, and its charging technology increasingly pursues fast charging, such as high-power direct current charging. When the power terminals of the charging gun and the charging stand are connected with each other, a large amount of heat energy will be released, and the resistance value of the power terminals and the connecting part of the charging stand will increase synchronously with the increase of temperature, which will cause the following dangers: the heat generation continues, the performance of the terminals will be greatly reduced, which will directly lead to the slowing down of the charging speed, and at the same time, it will cause the overheating, burning and even short circuit of the electric wire, and thus cause a fire, affecting the safety of charging.

[0003] Therefore, the charging stand starts to be provided with a liquid cooling module for cooling and temperature reduction, and a sealing ring is used for sealing. However, the following defects exist: firstly, the sealing ring is prone to liquid leakage risk after high-temperature aging, which will cause hazards such as short circuit, power trip, interruption of the charging process, and even damage to the charging equipment, and thus has potential safety risks and reduces the service life of the charging stand; and secondly, the liquid cooling module is built-in, the structure is complex, the internal space is small, and a large amount of cooling liquid cannot be accommodated for heat exchange, so the cooling effect is poor. UTILITY MODEL CONTENTS

[0004] In order to solve one or more of the above problems, the utility model provides a liquid cooling charging stand of external cooling module.

[0005] According to one aspect of the utility model, the liquid cooling charging stand of external cooling module comprises: a shell, a cooling module, and a plurality of liquid cooling cables and power terminals.

[0006] The outer peripheral wall of the shell is provided with an annular cooling groove, and the inner wall of the annular heat conduction plate in the cooling groove is fixedly connected with a plurality of heat conduction pieces.

[0007] The liquid cooling cable is sleeved at the rear end of the shell, and the front connecting end thereof extends into the inner cavity of the shell, and the end of the liquid passage of the liquid cooling cable is located on both sides of the shell.

[0008] The power terminal is fixedly sleeved at the front end of the shell, the rear connecting end of each power terminal is fixedly connected with the front connecting end of one liquid cooling cable, and the rear connecting end or the front connecting end is attached to the inner wall of the heat conduction piece.

[0009] The liquid cooling shell of the cooling module is detachably sleeved outside the shell, the liquid cooling shell seals the cooling groove to form a heat exchange cooling cavity, and the inlet and outlet liquid nozzles symmetrically arranged at both ends of the liquid cooling shell are connected with the two liquid passages.

[0010] In some embodiments, the front connecting end is a rectangular end plate, the rear connecting end is a horizontal end plate, the inner surface of the front connecting end is integrally welded with the rear connecting end, and the outer surface thereof is attached to the heat conduction piece.

[0011] In some embodiments, the heat-conducting member is a heat-conducting silica gel, the inner surface of the heat-conducting member is a plane, and the outer surface is a circular arc surface.

[0012] In some embodiments, the front and rear end walls of the cooling tank are provided with two annular inner sealing grooves, the inner end of the sealing ring is interference connected with the inner sealing grooves, and the outer end is tightly attached to the inner wall of the liquid cooling shell.

[0013] In some embodiments, the outer sealing groove of the inner wall of the liquid cooling shell is interference connected with the outer end of the sealing ring, and the sealing ring is an O-ring.

[0014] In some embodiments, the liquid cooling shell is tubular, the peripheral wall of the liquid cooling shell is provided with a plurality of rectangular clamping holes arranged in a circle at the front end, and a positioning end plate is vertically connected at the rear end, the outer shell is provided with a plurality of clamping heads arranged in a circle, the outer shell is sleeved with the rear end of the liquid cooling shell, the positioning end plate is attached to the rear wall of the outer shell, and the clamping heads are connected with the clamping holes.

[0015] In some embodiments, the inlet and outlet liquid nozzle is a right-angle bent nozzle, the radial section of the inlet and outlet liquid nozzle is integrally connected with the liquid cooling shell and communicates with the heat exchange cooling cavity, and the axial section of the inlet and outlet liquid nozzle is inserted into the through liquid pipe and is fixed by a clamp.

[0016] In some embodiments, the axial section is provided with a plurality of shoulders, and the through liquid pipe is elastically sleeved with the shoulders.

[0017] In some embodiments, the outer shell includes a front mounting shell and a rear mounting shell clamped in front and rear, and the cooling tank is arranged on the peripheral wall of the accommodating cavity of the rear mounting shell.

[0018] The two liquid cooling cables pass through the tail cover and the wire sealing body in the rear mounting shell, and the front connecting end thereof enters the accommodating cavity.

[0019] The two power terminals are fixedly sleeved with the power shaft holes of the front mounting shell, and the rear connecting end thereof enters the accommodating cavity.

[0020] In some embodiments, the charging seat is any one of the national standard DC seat, the Japanese standard DC seat, the European standard DC seat, and the American standard DC seat in new energy vehicles.

[0021] The liquid-cooled charging base with an external cooling module forms a heat exchange cooling cavity between the external cooling module and the shell, the heat at the power terminal connection is conducted to the cooling groove through the heat conduction piece, and the heat is taken away through the circulating cooling liquid in the heat exchange cooling cavity, so that the operation is always ensured within the safe temperature; the beneficial effects are: first, the cooling module is external, which can avoid the short circuit hazard caused by liquid leakage, keep the charging equipment in stable operation state at all times, ensure safe, efficient and fast charging, and prolong the service life of the charging base; second, the cooling module is external, the liquid-cooled shell can select a suitable volume according to the heat exchange demand, can accommodate a large amount of cooling liquid for rapid heat exchange, timely dissipate heat, avoid overheating of the equipment, and has high cooling effect; third, the structure is simple, the cooling groove is arranged by using the shell, and only the liquid-cooled shell sleeve needs to be connected, so that the equipment is compact in size, is conducive to the arrangement of other parts, and protects the precise components inside the charging base in all directions. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a three-dimensional schematic view of a liquid-cooled charging base with an external cooling module according to an embodiment of the utility model;

[0023] Figure 2 It is Figure 1 It is a sectional view of the liquid-cooled charging base with an external cooling module shown in the figure;

[0024] Figure 3 It is Figure 2 It is a three-dimensional schematic view of the liquid-cooled shell shown in the figure;

[0025] Figure 4 It is Figure 2 It is a three-dimensional schematic view of the rear mounting shell shown in the figure;

[0026] Figure 5 It is Figure 2 It is a three-dimensional schematic view of the liquid-cooled cable and the power terminal shown in the figure;

[0027] Shell 1, rear mounting shell 10, cooling groove 100, inner heat conduction plate 101, containing cavity 102, inner sealing groove 103, clamping head 104, front mounting shell 11, sealing ring 12, wire sealing body 13, tail cover 14;

[0028] Liquid-cooled cable 2, front connecting end 21, liquid passage 22;

[0029] Power terminal 3, rear connecting end 31;

[0030] Cooling module 4, liquid-cooled shell 40, clamping hole 401, positioning end plate 402, liquid inlet and outlet nozzle 41, shoulder 411, sealing ring 42;

[0031] Heat conduction piece 5; circuit board assembly 6; signal terminal 7; ground terminal 8. DETAILED DESCRIPTION

[0032] The utility model makes further detailed description below combining with the drawings. It is to be explained that, the words "front", "back", "left", "right", "upper" and "lower" in the following description refer to the direction in the drawing, the words "inner" and "outer" refer to the direction towards or away from the geometric center of a particular component respectively.

[0033] Figures 1 to 5 The utility model discloses a liquid cooling charging seat of external cooling module shows schematically. As shown in the figure, the liquid cooling charging seat of external cooling module includes: shell 1, cooling module 4 and liquid cooling cable 2, power terminal 3 are multiple,

[0034] The outer peripheral wall of shell 1 is provided with annular cooling groove 100, and the annular inner heat conduction plate 101 inner wall of cooling groove 100 is fixedly connected with multiple heat conduction pieces 5;

[0035] The liquid cooling cable 2 is sleeved with the rear end of shell 1, and the front connecting end 21 thereof extends into the inner cavity of shell 1, and the liquid cooling cable 2 is located on both sides of shell 1.

[0036] The power terminal 3 is fixedly sleeved with the front end of shell 1, and the rear connecting end 31 of each power terminal 3 is fixedly connected with the front connecting end 21 of a liquid cooling cable 2, and the rear connecting end 31 or the front connecting end 21 is attached to the inner wall of the heat conduction piece 5.

[0037] The liquid cooling shell 40 of cooling module 4 is detachably sleeved outside shell 1, the liquid cooling shell 40 seals cooling groove 100 to form a heat exchange cooling cavity, and the inlet and outlet liquid nozzles 41 symmetrically arranged at both ends of the liquid cooling shell 40 are connected with the two liquid through pipes 22.

[0038] The liquid cooling charging seat of external cooling module forms a heat exchange cooling cavity between the external cooling module 4 and the shell 1, the heat at the power terminal connection is conducted to the cooling groove 100 through the heat conduction piece 5, and the heat is taken away by the circulating cooling liquid in the heat exchange cooling cavity, so that the device always operates within a safe temperature; its beneficial effects are: first, the cooling module 4 is external, which can avoid the short circuit hazard caused by liquid leakage, keep the charging equipment in a stable operating state, ensure safe, efficient and fast charging, and prolong the service life of the charging seat; second, the cooling module 40 is external, the liquid cooling shell 40 can select appropriate volume according to heat exchange demand, can accommodate a large amount of cooling liquid for rapid heat exchange, timely dissipate heat, avoid equipment overheating, and has high cooling effect; third, the structure is simple, the cooling groove 100 is arranged by using the shell, only the liquid cooling shell 40 needs to be sleeved, the device is compact and small in size, which is conducive to the arrangement of other parts, and the precision components inside the charging seat are protected in all directions.

[0039] Further, the front connecting end 21 is a rectangular end plate, the rear connecting end 31 is a horizontal end plate, the inner surface of the front connecting end 21 and the rear connecting end 31 are welded into an integral whole, and the outer surface thereof is attached to the heat conduction piece 5. Its beneficial effects are: the connection structure is simple and convenient for processing and assembling.

[0040] Preferably, the heat-conducting member 5 is made of heat-conducting silica gel, the inner surface of the heat-conducting member 5 is flat, and the outer surface is a circular arc surface. The beneficial effect is that the arrangement has good heat-conducting effect, timely dissipates heat, and avoids overheating of the equipment.

[0041] Further, the front and rear end walls of the cooling groove 100 are provided with two annular inner sealing grooves 103, each inner sealing groove 103 is interference-connected with the inner end of a sealing ring 42, and the outer end of the sealing ring 42 is tightly attached to the inner wall of the liquid cooling shell 40. Preferably, the inner wall of the liquid cooling shell 40 is provided with two annular outer sealing grooves, the outer end of the sealing ring 42 is interference-connected with the outer sealing grooves, and the sealing ring 42 is an O-ring. The beneficial effect is that the arrangement further ensures the sealing effect, avoids the risk of liquid leakage, and has high safety performance.

[0042] Further, the liquid cooling shell 40 is tubular, the peripheral wall of the liquid cooling shell 40 is provided with a plurality of rectangular clamping holes 401 at the front end and is vertically connected with a positioning end plate 402 at the rear end, the outer shell 1 is provided with a plurality of clamping heads 104 arranged in a circle, the outer shell 1 is sleeved with the rear end of the liquid cooling shell 40, the positioning end plate 402 is attached to the rear wall of the outer shell 1, and the clamping head 104 is elastically deformed and interference-connected with the clamping hole 401. Preferably, the connection between the liquid cooling shell 40 and the outer shell 1 is also coated with sealing glue. The beneficial effect is that the connection is fastened and does not loosen and separate during long-term use.

[0043] Further, the inlet and outlet nozzle 41 is a right-angle bent nozzle, the radial section of the inlet and outlet nozzle 41 is integrally connected with the liquid cooling shell 40 and communicates with the heat exchange and cooling cavity, and the axial section of the inlet and outlet nozzle 41 is inserted and sleeved with the through liquid pipe 22 and is fixed by a clamp. Preferably, the axial section of the inlet and outlet nozzle 41 is provided with a plurality of annular protrusions 411, and the through liquid pipe 22 elastically deforms and covers the protrusions 411. The beneficial effect is that the connection structure is fastened, and the external arrangement of the pipeline further reduces the internal size.

[0044] Further, the outer shell 1 includes a front mounting shell 11 and a rear mounting shell 10 clamped in front and back, and a sealing ring 12 is arranged between the two; the rear mounting shell 10 is formed with a receiving cavity 102 at the front end, the cooling groove 100 is arranged on the peripheral wall of the receiving cavity 102 of the rear mounting shell 10, and a plurality of heat-conducting members 5 are fixedly connected to the inner wall of the annular inner heat-conducting plate 101 of the cooling groove 100;

[0045] The two rear end pipes of the rear mounting shell 10 are fixedly provided with sealing line bodies 13 and clamped with tail covers 14;

[0046] The two liquid cooling cables 2 pass through the tail covers 14 and the sealing line bodies 13 and enter the receiving cavity 102 through the front connecting end 21;

[0047] The two power terminals 3 are fixedly sleeved with the power shaft holes of the front mounting shell 11 and enter the receiving cavity 102 through the rear connecting end 31.

[0048] The front mounting shell 11 is screw-connected with the circuit board assembly 6 through the rear end plate, a plurality of signal terminals 7 are connected with the signal shaft hole of the front mounting shell 11 through the front end shaft sleeve and the rear end is connected with the circuit board assembly 6 through a drum spring;

[0049] The front end of the grounding terminal 8 is connected with the grounding shaft hole of the front mounting shell 11 through the front end shaft sleeve.

[0050] Preferably, the charging seat is any one of the national standard DC seat, the Japanese standard DC seat, the European standard DC seat and the American standard DC seat in the new energy vehicle. Its beneficial effect is that the charging seat can be applied to various charging scene requirements, and the application range is wide.

[0051] The above only describes some embodiments of the present application. For those skilled in the art, without departing from the inventive concept, a number of modifications and improvements can be made, which are all within the scope of protection of the present application.

Claims

1. A liquid-cooled charging station of an external cooling module, characterized in that, It includes: shell (1), cooling module (4) and liquid cooling cable (2), power terminal (3) are multiple; The outer peripheral wall of the shell (1) is provided with an annular cooling groove (100), and the inner wall of the annular inner heat conduction plate (101) of the cooling groove (100) is fixedly connected with a plurality of heat conduction pieces (5); The liquid cooling cable (2) is sleeved with the rear end of the shell (1), and the front connecting end (21) thereof extends into the inner cavity of the shell (1), and the end of the liquid pipe (22) of the liquid cooling cable (2) is located on both sides of the shell (1); The power terminal (3) is fixedly sleeved with the front end of the shell (1), the rear connecting end (31) of each power terminal (3) is fixedly connected with the front connecting end (21) of a liquid cooling cable (2), and the rear connecting end (31) or the front connecting end (21) is attached to the inner wall of the heat conduction piece (5); The liquid cooling shell (40) of the cooling module (4) is detachably sleeved outside the shell (1), the liquid cooling shell (40) seals the cooling groove (100) to form a heat exchange cooling cavity, and the inlet and outlet liquid nozzles (41) symmetrically arranged at both ends of the liquid cooling shell (40) are connected with the two liquid pipes (22).

2. The liquid-cooled charging station of claim 1, wherein, The front connecting end (21) is a rectangular end plate, the rear connecting end (31) is a horizontal end plate, the inner surface of the front connecting end (21) and the rear connecting end (31) are welded into one body, and the outer surfaces thereof are attached to the heat conduction pieces (5).

3. The liquid-cooled charging station of claim 2, wherein, The heat conduction piece (5) is heat conduction silica gel, the inner surface of the heat conduction piece (5) is a plane, and the outer surface thereof is a circular arc surface.

4. The liquid-cooled charging station of claim 1, wherein, The front and rear end walls of the cooling groove (100) are provided with two annular inner sealing grooves (103), the inner end of the sealing ring (42) is interference connected with the inner sealing groove (103), and the outer end thereof is tightly attached to the inner wall of the liquid cooling shell (40).

5. The liquid-cooled charging station of claim 4, wherein, The outer sealing groove of the inner wall of the liquid cooling shell (40) is interference connected with the outer end of the sealing ring (42), and the sealing ring (42) is an O-shaped ring.

6. The liquid-cooled charging station of claim 1, wherein, The liquid cooling shell (40) is tubular, a plurality of rectangular clamping holes (401) are circumferentially arranged at the front end of the peripheral wall of the liquid cooling shell (40), and a positioning end plate (402) is vertically connected at the rear end of the liquid cooling shell (40), a plurality of clamping heads (104) are circumferentially arranged on the shell (1), the shell (1) is sleeved with the rear end of the liquid cooling shell (40), the positioning end plate (402) is attached to the rear wall of the shell (1), and the clamping heads (104) are connected with the clamping holes (401).

7. The liquid-cooled charging station of claim 1, wherein, The inlet and outlet liquid nozzles (41) are right angle bent nozzles, the radial section of the inlet and outlet liquid nozzles (41) is integrally connected with the liquid cooling shell (40) and communicates with the heat exchange cooling cavity, the axial section of the inlet and outlet liquid nozzles (41) is plug-in connected with the liquid pipe (22) and is fixed by a clamp.

8. The liquid-cooled charging station of claim 7, wherein, The axial section is provided with a plurality of convex shoulders (411), and the liquid pipe (22) elastically covers the convex shoulders (411).

9. The liquid-cooled charging station of any one of claims 1 to 8, wherein, The shell (1) includes a front mounting shell (11) and a rear mounting shell (10) which are clamped together, and the cooling groove (100) is arranged on the peripheral wall of the accommodating cavity (102) of the rear mounting shell (10); Two liquid cooling cables (2) pass through the tail cover (14) and the wire sealing body (13) in the rear mounting shell (10) and enter the accommodating cavity (102) through the front connecting end (21); Two power terminals (3) are fixedly sleeved with the power shaft holes of the front mounting shell (11) and enter the accommodating cavity (102) through the rear connecting end (31).

10. The liquid-cooled charging station of claim 9, wherein, The charging seat is any one of a national standard DC seat, a Japanese standard DC seat, a European standard DC seat and an American standard DC seat in a new energy vehicle.

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