Novel direct current charging seat of single-cavity double-shaft-channel liquid cooling box

Abstract

The utility model discloses a novel direct current charging seat of a single-cavity double-shaft-channel liquid cooling box. The direct current charging seat comprises a liquid cooling box made of a heat conduction material, a heat conduction ring, a fixed substrate and a front heat conduction pad, the fixed substrate is connected with the rear mounting cavity of the front mounting plate; the front heat conducting pad is placed in the positioning groove of the fixed substrate; the fixed substrate is in threaded connection with the liquid cooling box, two symmetrical liquid cooling grooves in the liquid cooling box coaxially wrap two heat conduction shaft channels, the lower ends of the two liquid cooling grooves are communicated and are sealed by a rear cover plate, and the upper ends of the two liquid cooling grooves are communicated with a cooling liquid circulation loop respectively; the two heat conduction rings are in interference fit with the shaft sleeve heat conduction shaft channel and the front heat conduction pad and wrap the connecting end of the direct current terminal and the cable. The direct-current terminal is positioned and attached to the heat conduction ring and the front heat conduction pad. According to the utility model, a heat production end is fully wrapped, heat is completely and timely discharged, the device is safe and has no heating overload, the charging efficiency is high, and the service life is long.

Description

Technical Field

[0001] The utility model relates to the field of DC charging seats, in particular to a novel DC charging seat of a single-cavity dual-axis liquid cooling box. Background Art

[0002] With the country's policy support for new energy, new energy vehicles are developing rapidly. New energy vehicles require efficient, fast and safe charging. In order to shorten the charging time of electric vehicles, the existing fast DC charging technology adopts high-power charging. Due to the increase in charging power and the increase in maximum charging current, a large amount of heat is generated when the charging gun is connected to the power terminal of the charging station. Its defects are: First, the resistance of the DC power terminal of the charging station is positively correlated with the temperature rise. The temperature of the electronic components continues to rise and continue to generate heat. The high heat affects the performance of the terminal and thus reduces the charging speed, causing the equipment to overheat and cause electrical component failure; Second, when the charging power exceeds the load capacity of the charging station and the connecting wires, it may cause the wires to overheat, burn or even short-circuit, thereby causing a fire. Excessive current may also cause the power supply to trip, interrupt the charging process, and even damage the charging equipment. In serious cases, it may even burn, posing a potential safety risk and affecting charging safety; Third, the electronic components in the charging station are constantly in a high-temperature state, the equipment frequently stops, and it is difficult to operate stably, resulting in low charging efficiency and long vehicle charging time, which seriously affects the service life of parts. Utility Model Content

[0003] In order to solve one or more of the above problems, the present invention provides a novel DC charging station for a single-cavity dual-axis liquid cooling box.

[0004] According to one aspect of the present invention, the DC charging base of the novel single-cavity dual-axis liquid cooling box includes a front mounting plate and a rear mounting plate connected front and back, and two DC terminals in the shaft sleeve of the front mounting plate. It is characterized by further comprising: a liquid cooling box made of a heat-conducting material, a heat-conducting ring, and a fixed base plate;

[0005] The liquid cooling box's liquid cooling body is symmetrically equipped with two rectangular heat conduction channels running through the front and back. Two symmetrical C-shaped liquid cooling grooves in the liquid cooling body coaxially surround the two heat conduction channels. The lower ends of the two liquid cooling grooves are connected through the middle channel and sealed by the rear cover. The upper ends of the two liquid cooling grooves are connected to the coolant circulation circuit.

[0006] Two heat-conducting rings, interference fit sleeves, heat-conducting shafts and shaft holes of the front heat-conducting pads;

[0007] The fixed base plate is connected to the rear mounting cavity of the front mounting plate, and the rear sides of the four corners of the fixed base plate are threadedly connected to the liquid cooling body of the liquid cooling box. The front thermal pad is placed in the positioning groove of the fixed base plate and fits the front side of the liquid cooling body.

[0008] The rear end of the DC terminal passes through the fixed substrate and is positioned to fit the thermal conductive ring and the front thermal conductive pad. The connecting end of the DC terminal and the cable is wrapped in the thermal conductive ring.

[0009] In some embodiments, two symmetrical connecting pipes on the upper end of the rear cover are provided with water nozzles.

[0010] In some embodiments, the cable is a liquid-cooled cable, one end of the two liquid pipes is connected to the water nozzle and the other end is connected to the liquid shaft hole of the liquid-cooled cable, and the liquid shaft hole is connected to the cooling liquid circulation loop.

[0011] In some embodiments, the rear end of the DC terminal is attached to or welded to a terminal end of a cable and is sleeved in a heat-conducting ring.

[0012] In some embodiments, the front thermal pad is made of thermal grease, and the liquid cooling box is made of PPS plastic.

[0013] In some embodiments, the screw hole columns at the four corners of the rear-loading cavity extend into the first through holes at the four corners of the fixed base plate, and the screw members pass through the second through holes of the connecting end blocks to connect to the screw hole columns.

[0014] In some embodiments, the positioning groove and the front heat conducting pad have the same profile and size; a front heat conducting pad is welded to the front side of the liquid cooling body.

[0015] In some embodiments, an annular sealing groove is provided on the rear wall of the liquid cooling body, and a sealing ring with interference fit in the sealing groove is fitted and connected to the rear cover plate.

[0016] In some embodiments, a positioning blind hole is provided at the upper end of the liquid cooling body, a fourth through hole is provided at the upper end of the rear cover plate, and a positioning screw passes through the fourth through hole to connect to the positioning blind hole.

[0017] In some embodiments, the two connecting pipes are connected to the inner ends of the upper ends of the C-shaped grooves, and the inner ends of the lower ends of the C-shaped grooves are connected through a middle channel in the shape of an arc hole.

[0018] The beneficial effects of the DC charging seat of this new single-cavity, dual-axis liquid cooling box are as follows: first, the liquid cooling box has two heat-conducting axes, which directly and fully cover the connection between the two DC terminals and the cables, and all heat is discharged to the liquid cooling tank in time, without heat accumulation, and always maintains safe and fast charging. The equipment is safe without heat overload and no safety hazards. The equipment has high performance, fast charging efficiency, and long service life; second, the use of a heat-conducting ring can circumferentially fix the heating element and wrap the side wall of the heating area in all directions, directly transfer energy, quickly transfer heat, and prevent heat overflow; third, a front thermal pad is provided to reduce the heat of the end wall of the DC terminal, further improve the heat removal efficiency, prevent heat from entering the front electronic components, and achieve the best heat removal effect; fourth, the fixed base plate fixes the front thermal pad through the positioning groove, and then fixes the liquid cooling box, so as to achieve high-precision installation of the liquid cooling box and ensure the accuracy of each heat dissipation position. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a three-dimensional schematic diagram of a DC charging station for a novel single-cavity dual-axis liquid cooling box according to one embodiment of the present invention;

[0020] Figure 2 for Figure 1 The three-dimensional schematic diagram of the new single-cavity dual-axis liquid cooling box with the DC charging base removed from the outer shell;

[0021] Figure 3 for Figure 2 A three-dimensional exploded schematic diagram of the liquid cooling box shown;

[0022] Figure 4 for Figure 2 A schematic cross-sectional view of the liquid cooling box shown;

[0023] Figure 5 for Figure 3 A three-dimensional schematic diagram of the liquid-cooled body shown;

[0024] Liquid cooling box 1, liquid cooling body 10, heat conduction shaft 101, liquid cooling groove 102, middle channel 103, connecting end block 104, sealing groove 105, positioning blind hole 106, rear cover 11, fourth through hole 111, connecting pipe 12, water nozzle 13; thermal conductive ring 2, fixed base plate 3, first ear plate 31, positioning groove 32, front thermal pad 4; liquid pipe 5;

[0025] Front mounting plate 01; rear mounting plate 02; DC terminal 03, rear connecting terminal 031;

[0026] Panel assembly 04; tail cover 05; protective cover 06;

[0027] Cable 07, liquid shaft hole 070, wiring terminal 071. DETAILED DESCRIPTION

[0028] The present invention will be described in further detail below with reference to the accompanying drawings. It should be noted that the terms "front," "rear," "left," "right," "up," and "down" used in the following description refer to directions in the accompanying drawings, and the terms "inward" and "outward" refer to directions toward or away from the geometric center of a particular component, respectively.

[0029] Figures 1 to 5 The schematic diagram shows a DC charging station for a new single-chamber, dual-axis liquid cooling box according to one embodiment of the present invention. As shown, the DC charging station comprises a front mounting plate 01 and a rear mounting plate 02 connected by front and rear threads, with two DC terminals 03 sleeved within the front mounting plate 01. It also includes: a liquid cooling box 1 made of a thermally conductive material, a thermally conductive ring 2, and a fixed base plate 3.

[0030] The liquid cooling body 10 of the liquid cooling box 1 is symmetrically provided with two rectangular heat conduction shafts 101 running through the front and back surfaces. Two symmetrical C-shaped liquid cooling grooves 102 in the liquid cooling body 10 coaxially surround the two heat conduction shafts 101. The lower ends of the two liquid cooling grooves 102 are connected through the middle channel 103 and are sealed by the rear cover 11 to form a single-cavity liquid cooling cavity. The upper ends of the two liquid cooling grooves 102 are connected to the coolant circulation loop; preferably, the liquid cooling body 10 and the rear cover 11 are ultrasonically welded or laser welded.

[0031] The two heat-conducting rings 2 interfere with the heat-conducting shaft 101 of the sleeve and the shaft hole of the front heat-conducting pad 4;

[0032] The fixed base plate 3 is connected to the rear cavity of the front mounting plate 01, and the rear threads at the four corners of the fixed base plate 3 are detachably connected to the liquid cooling body 10 of the liquid cooling box 1;

[0033] The front thermal pad 4 is placed in the positioning groove 32 of the fixed base plate 3 and fits the front side of the liquid cooling body 10. The front thermal pad 4 is preferably made of thermal grease or thermal silica gel, and the liquid cooling box 1 is preferably made of polyphenylene sulfide PPS plastic (PPS is a thermoplastic resin with good insulation and thermal conductivity).

[0034] The rear end of DC terminal 03 passes through fixed baseplate 3 and is positioned to engage thermal ring 2 and front thermal pad 4. The connection between DC terminal 03 and cable 07 is encased within thermal ring 2. Heat from the connection is transferred to the coolant in the liquid cooling chamber via thermal ring 2 and thermal channel 101. Heat from DC terminal 03 is then transferred directly to the coolant in the liquid cooling chamber via front thermal pad 4 and liquid cooling body 10.

[0035] The beneficial effects of the DC charging seat of the new single-cavity dual-axis liquid cooling box are: first, the liquid cooling box 1 has two heat-conducting axes 101, which directly and fully cover the connection points of the two DC terminals 03 and the cable 07, and remove all heat to the liquid cooling tank 102 in time, without heat accumulation, and always maintain safe and fast charging. The equipment is safe without heat overload and no safety hazards. The equipment has high performance, fast charging efficiency, and long service life. Second, the heat-conducting ring 2 can be used to fix the heating element circumferentially and wrap the side wall of the heating area in all directions, directly transfer energy, quickly transfer heat, and prevent heat overflow. Third, a front thermal pad 4 is provided to reduce the heat of the end wall of the DC terminal 03, further improve the heat removal efficiency, prevent heat from entering the electronic components at the front end, and achieve the best heat removal effect. Fourth, the fixed base plate 3 fixes the front thermal pad 4 through the positioning groove 32, and then fixes the liquid cooling box 1, to achieve high-precision installation of the liquid cooling box 1 and ensure the accuracy of each heat dissipation position.

[0036] Furthermore, two connecting tubes 12 are symmetrically mounted on the upper end of the rear cover 11. A nozzle 13 is mounted on the upper end of each of the two liquid cooling tubes 12, connecting the nozzles 13 to the coolant circulation loop. Preferably, the cable 07 is a liquid cooling cable. One end of each of the two liquid cooling tubes 5 is connected to the nozzle 13, and the other end is connected to the liquid through-hole 070 of the liquid cooling cable, which connects to the coolant circulation loop. This advantageously results in a simple structure, high device integration, and a significant reduction in the number of components. It also facilitates the retrofitting of older equipment.

[0037] Preferably, the two connecting pipes 12 are connected to the inner ends of the upper ends of the C-shaped grooves, and the inner ends of the lower ends of the C-shaped grooves are connected through the arc-shaped middle channel 103. One connecting pipe 12 continuously outputs coolant, which flows through the liquid cooling chamber 10 once and then flows out from the other connecting pipe 12. The beneficial effect is that the configuration of the liquid cooling groove enables the two connecting pipes 12 to face the two C-shaped sub-cavities, so that the liquid flows evenly through the two sub-cavities, and the cooling effect of the two sub-cavities is the same, which promotes uniform and balanced cooling.

[0038] Preferably, the DC terminal 03 has a flat rectangular rear connection end 031, and the cable 07 uses a flat rectangular terminal 071. The rear connection end 031 is drum-shaped, with two round cones fittingly connected or welded to the terminal 071, and both are sleeved within the thermally conductive ring 2. This arrangement effectively secures the DC terminal 03 and the cable 07 connection end.

[0039] Furthermore, the first lugs 31 at the four corners of the fixed base plate 3 are provided with first through-holes, and the connecting end blocks 104 at the four corners of the liquid cooling body 10 are provided with second through-holes. Screws pass through the second through-holes and the first through-holes to thread into the rear mounting cavity. Preferably, four screw posts are provided at the four corners of the rear mounting cavity. The screw posts extend into the first through-holes, and the screws pass through the second through-holes to connect with the screw posts. This arrangement advantageously facilitates assembly and makes the device compact.

[0040] Furthermore, the positioning groove 32 and the front heat conductor 4 have the same contour and dimensions. A front thermal pad 4 is also welded to the front side of the liquid-cooling body 10, and the rear end of the heat conduction channel 101 extends through the front thermal pad 4. Preferably, the front positioning socket sleeve of the front mounting plate 01 positions the front ends of the two DC terminals 03, while the central through-hole sleeve of the fixed base plate 3 positions the rear ends of the DC terminals 03. The rear end faces of the DC terminals 03 are positioned against the front thermal pad 4 and the front of the thermal ring 2. This arrangement advantageously facilitates installation and fixation.

[0041] Furthermore, the rear wall of the liquid cooling body 10 is further provided with an annular sealing groove 105, and the sealing ring of the interference fit in the sealing groove 105 is fitted and connected to the rear cover plate 11. Its beneficial effect is that the sealing ring improves the sealing performance of the liquid cooling box and prevents the cooling liquid from overflowing.

[0042] Preferably, a positioning blind hole 106 is further provided at the upper end of the liquid cooling body 10, and a fourth through hole 111 is provided at the upper end of the rear cover plate 11, and a positioning screw passes through the fourth through hole 111 and is threadedly connected to the positioning blind hole 106. The beneficial effect is that the positioning blind hole 106 can improve the installation accuracy of the device.

[0043] Furthermore, a panel assembly 04 is installed at the front end of the front mounting plate 01, and a protective cover 06 is hinged at the front end of the panel assembly 04; the outer wall of the rear end shaft tube of the rear mounting plate 02 is clamped with two tail covers 05 and the inner wall shaft sleeve has a sealing body.

[0044] The above descriptions are only some embodiments of the present invention. For those skilled in the art, several modifications and improvements can be made without departing from the inventive concept of the present invention, and these all fall within the scope of protection of the present invention.

Claims

1. A novel DC charging base for a single-cavity, dual-axis liquid cooling box, comprising a front mounting plate (01) and a rear mounting plate (02) connected front and rear, wherein the front mounting plate (01) has two DC terminals (03) sleeved inside the shaft, characterized in that: It also includes: a liquid cooling box (1) made of a heat-conducting material, a heat-conducting ring (2), and a fixed base plate (3); The liquid cooling body (10) of the liquid cooling box (1) is symmetrically provided with two rectangular heat-conducting shafts (101) running through the front and back sides. Two symmetrical C-shaped liquid cooling grooves (102) in the liquid cooling body (10) coaxially surround the two heat-conducting shafts (101). The lower ends of the two liquid cooling grooves (102) are connected through an intermediate hole (103) and are sealed by a rear cover (11). The upper ends of the two liquid cooling grooves (102) are connected to a cooling liquid circulation circuit. The two heat-conducting rings (2) interfere with the heat-conducting shaft path (101) of the sleeve and the shaft hole of the front heat-conducting pad (4); The fixed base plate (3) is connected to the rear mounting cavity of the front mounting plate (01), the rear sides of the four corners of the fixed base plate (3) are threadedly connected to the liquid cooling body (10) of the liquid cooling box (1), and the front thermal pad (4) is placed in the positioning groove (32) of the fixed base plate (3) and fits the front side of the liquid cooling body (10); The rear end of the DC terminal (03) passes through the fixed substrate (3) and is positioned to fit the thermal conductive ring (2) and the front thermal conductive pad (4), and the connection end of the DC terminal (03) and the cable (07) is sheathed in the thermal conductive ring (2).

2. The DC charging station of the novel single-cavity dual-axis liquid cooling box according to claim 1 is characterized in that: Two symmetrical connecting pipes (12) are installed with water nozzles (13) on the upper end of the rear cover plate (11).

3. The DC charging station of the novel single-cavity dual-axis liquid cooling box according to claim 2 is characterized in that: The cable (07) is a liquid cooling cable, one end of the two liquid pipes (5) is connected to the water nozzle (13) and the other end is connected to the liquid shaft hole (070) of the liquid cooling cable, and the liquid shaft hole (070) is connected to the cooling liquid circulation circuit.

4. The DC charging station of the novel single-cavity dual-axis liquid cooling box according to claim 1 is characterized in that: The rear connecting end (031) of the DC terminal (03) is fitted to connect or weld the connection terminal (071) of the cable (07) and is inside the shaft sleeve heat conducting ring (2).

5. The DC charging station of the novel single-cavity dual-axis liquid cooling box according to claim 1 is characterized in that: The front thermal pad (4) is made of thermal grease, and the liquid cooling box (1) is made of PPS plastic.

6. The DC charging station of the novel single-cavity dual-axis liquid cooling box according to claim 1 is characterized in that: The screw hole columns at the four corners of the rear cavity extend into the first through holes at the four corners of the fixed base plate (3), and the screw members pass through the second through holes of the connecting end block (104) to connect with the screw hole columns.

7. The DC charging station of the novel single-cavity dual-axis liquid cooling box according to claim 1 is characterized in that: The positioning groove (32) has the same outline and size as the front heat conducting pad (4); and the front heat conducting pad (4) is welded to the front side surface of the liquid cooling body (10).

8. The DC charging station of the novel single-cavity dual-axis liquid cooling box according to claim 1 is characterized in that: An annular sealing groove (105) is provided on the rear wall of the liquid cooling body (10), and an interference-connected sealing ring in the sealing groove (105) is fitted and connected to the rear cover plate (11).

9. The novel DC charging station for the single-cavity dual-axis liquid cooling box according to claim 1 is characterized in that: The upper end of the liquid cooling body (10) is provided with a positioning blind hole (106), the upper end of the rear cover plate (11) is provided with a fourth through hole (111), and a positioning screw passes through the fourth through hole (111) and is connected to the positioning blind hole (106).

10. The novel DC charging station for the single-cavity dual-axis liquid cooling box according to claim 1 is characterized in that: The two connecting pipes (12) are connected to the inner ends of the upper ends of the C-shaped grooves, and the inner ends of the lower ends of the C-shaped grooves are connected to each other through the arc hole-shaped middle channel (103).

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