Direct-current charging seat with integrated precise fast-assembly liquid cooler

Abstract

The utility model discloses a direct current charging seat with an integrated precise fast-assembly liquid cooler. The direct current charging seat comprises a seat shell and a liquid cooler. The front end of a box body of the liquid cooler is integrally connected with an integrated yoke plate, the rear end of the box body is welded with a cover plate, a cooling cavity of the box body is internally provided with two heat transfer pipes communicated with a positioning end pipe, the front end of the positioning end pipe of the integrated yoke plate is inserted into a power jack of a seat shell and is attached to a positioning check ring, and four corners of the cover plate are connected with a front mounting plate through threaded pieces; the front ends of the two direct-current terminals are inserted into the power jacks, and the rear ends of the two direct-current terminals are positioned in the end tubes in a shaft sleeve manner; a grounding terminal and a plurality of signal pin rear end shaft sleeves are connected with the integrated yoke plate. According to the utility model, the liquid cooler can eliminate all heat in time, charging is safe and rapid, assembling is simple and rapid, efficiency is high, and product precision is high.

Description

Technical Field

[0001] The utility model relates to the field of DC charging seats, in particular to a DC charging seat with an integrated precision quick-install liquid cooler. 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, the connection between the charging gun and the power terminal of the charging station will generate a lot of heat. Its defects are: First, 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 severe cases, it may even burn, which poses a potential safety risk and affects charging safety. Second, the charging station is difficult to assemble, the assembly efficiency is low, the assembly accuracy is poor, and it is easy to cause poor assembly. Utility Model Content

[0003] In order to solve one or more of the above problems, the present invention provides a DC charging stand with an integrated precision quick-install liquid cooler.

[0004] According to one aspect of the present invention, the DC charging station with an integrated precision quick-install liquid cooler comprises:

[0005] The seat shell has a power jack, a grounding jack and a signal jack at the front end of the front mounting plate of the seat shell, and a positioning retaining ring is integrally provided on the rear end of the inner wall of the power jack;

[0006] The liquid cooler includes a box body, a cover plate, and an integrated connecting plate. The front end of the box body is integrally formed and connected to the integrated connecting plate, and the rear end is welded to the cover plate. Two heat transfer tubes connected to the positioning end tubes are provided in the cooling cavity of the box body. The front end of the positioning end tube of the integrated connecting plate is inserted into the power socket and fits the positioning retaining ring. The four corners of the cover plate are connected to the front mounting plate by screws.

[0007] The front ends of the two DC terminals are inserted into the power sockets and the rear ends are sleeved in the positioning end tubes. The connection ends between them and the power cables are sleeved with the heat transfer ring in the heat transfer tube.

[0008] A rear end sleeve of a grounding terminal is connected to the grounding shaft hole of the integrated connecting plate and the front end sleeve is connected to the grounding jack; the rear end sleeves of several signal pins are connected to the signal shaft holes of the integrated connecting plate and the front end sleeves are connected to the signal jack.

[0009] In some embodiments, the inclined positioning surface of the positioning retaining ring fits in contact with the outer inclined positioning surface of the front end of the positioning end tube.

[0010] In some embodiments, the front side of the positioning shoulder on the inner wall of the positioning end tube is in contact with the end of the DC terminal and the rear side is in contact with the front end of the thermal conductive ring.

[0011] In some embodiments, a rear end wall of the power socket is provided with a first inner chamfer for facilitating positioning and alignment.

[0012] In some embodiments, the signal shaft hole and the ground shaft hole are provided with vertically opening mounting openings.

[0013] In some embodiments, arc-shaped prism-shaped limiting posts are symmetrically provided between the signal shaft hole and the ground shaft hole.

[0014] In some embodiments, the front ends of the signal shaft hole and the ground shaft hole are further provided with outer chamfers, and the rear ends of the grounding socket and the signal socket are provided with second inner chamfers, and the outer chamfers are inserted into and fit into the second inner chamfers.

[0015] In some embodiments, a transverse partition is integrally connected between the two heat transfer tubes in the cooling cavity, the transverse partition and the heat transfer tube are attached to the cover plate, and two inlet and outlet liquid pipes symmetrically arranged in the middle of the cover plate are facing the middle of the upper end and the middle of the lower end of the cooling cavity.

[0016] In some embodiments, a vertical partition is integrally provided between the transverse partition and the upper and lower walls of the cooling cavity. The vertical partition is slightly shorter than the transverse partition and is connected to the cover plate via a gap.

[0017] In some embodiments, the inner wall of each spool hole further has a plurality of limiting columns protruding symmetrically toward the center of the circle.

[0018] The beneficial effects of the DC charging stand with an integrated precise quick-install liquid cooler are as follows: first, the heat transfer tube of the liquid cooler is wrapped with a heat-conducting ring at the connection between the two DC terminals and the power cable, so that all heat is removed in time, there is no heat accumulation, and safe and fast charging is always maintained. The equipment is safe without thermal overload and no safety hazards. The equipment has high performance, fast charging efficiency, and long service life. Second, the integrated liquid cooler adopts a cover plate and a front mounting plate for easy installation. At the same time, the positioning end tube of the integrated connecting plate and the positioning retaining ring of the front mounting plate are inserted together, which can quickly and accurately assemble the liquid cooler. The assembly is simple, fast and efficient, and the product precision is high. Third, the liquid cooler has integrated fixed grounding terminals and signal pins, which are convenient for quick and fast integrated installation, improve assembly efficiency, and reduce the size of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic front view of a DC charging station with an integrated precision quick-install liquid cooler according to one embodiment of the present invention;

[0020] Figure 2 for Figure 1 A schematic left side view of the front mounting plate shown;

[0021] Figure 3 for Figure 1 A three-dimensional schematic diagram of the DC charging station with the housing removed;

[0022] Figure 4 for Figure 3 A three-dimensional schematic diagram of the liquid cooler shown;

[0023] Figure 5 for Figure 4 Schematic diagram of explosion of liquid cooler shown (I);

[0024] Figure 6 for Figure 4 Schematic diagram of explosion of the liquid cooler shown (II);

[0025] Figure 7 for Figure 3 A schematic cross-sectional view of the liquid cooler and the front mounting plate is shown;

[0026] Liquid cooler 00, box 1, cooling chamber 10, heat transfer tube 101, horizontal partition 102, vertical partition 103, outer end ring 104, cover plate 2, outer positioning groove 20, wire shaft hole 21, inner positioning groove 22, limiting column 23, connecting ear plate 24, integrated connecting plate 3, positioning end tube 30, grounding shaft hole 31, signal shaft hole 32, outer inclined positioning surface 33, positioning shoulder 34, mounting port 35, outer chamfer 36, limiting column 37, thermal conductive ring 4, outer sealing ring 5, inner sealing ring 6, liquid inlet and outlet pipes 7, water nozzle 8, liquid pipe 9;

[0027] Front mounting plate 01, power jack 010, grounding jack 011, signal jack 012, first inner chamfer 013, positioning retaining ring 014, second inner chamfer 015, rear connecting block 016;

[0028] Rear mounting plate 02; DC terminal 03; ground terminal 04, ground wire 040; signal pin 05, signal wire 050; tail cover 06; panel 07; protective cover 08; power cable 09, liquid shaft hole 090, wiring terminal 091. DETAILED DESCRIPTION

[0029] 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.

[0030] Figures 1 to 7 A schematic diagram shows a DC charging station with an integrated precision quick-install liquid cooler according to one embodiment of the present invention. As shown in the figure, the device includes:

[0031] The seat shell, the front mounting plate 01 of the seat shell is provided with a power jack 010, a grounding jack 011 and a signal jack 012 at the front end, and a positioning retaining ring 014 is provided on the rear end of the inner wall of the power jack 010;

[0032] Liquid cooler 00, liquid cooler 00 includes a box body 1, a cover plate 2 and an integrated connecting plate 3. The front end of the box body 1 is integrally formed and connected to the integrated connecting plate 3, and the rear end is welded to the cover plate 2. Two heat transfer tubes 101 connected to the positioning end tube 30 are provided in the cooling chamber 10 of the box body 1. The front end of the positioning end tube 30 of the integrated connecting plate 3 is inserted into the power jack 010 and fits the positioning retaining ring 014. The four corners of the cover plate 2 are connected to the front mounting plate 01 via screws.

[0033] The front ends of the two DC terminals 03 are inserted into the power sockets 010 and the rear ends are sleeved in the positioning end tube 30. The connection ends of the two DC terminals 03 and the power cables 09 are sleeved in the heat transfer ring 4 in the heat transfer tube 101.

[0034] A middle sleeve of a grounding terminal 04 is connected to the grounding shaft hole 31 of the integrated connecting plate 3 and the front sleeve is connected to the grounding socket 011; the rear sleeves of several signal pins 05 are connected to the signal shaft hole 32 of the integrated connecting plate 3 and the rear sleeves are connected to the signal socket 012.

[0035] The beneficial effects of the DC charging stand with an integrated precise quick-install liquid cooler are as follows: First, the heat transfer tube 101 of the liquid cooler 00 is wrapped around the connection between the two DC terminals 03 and the power cable 09 through the heat-conducting ring 4, so that all heat is removed in time, there is no heat accumulation, and safe and fast charging is always maintained. 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 integrated liquid cooler 00 adopts the cover plate 2 and the front mounting plate 01 for easy installation. At the same time, the positioning end tube 30 of the integrated connecting plate 3 and the positioning retaining ring 014 of the front mounting plate 01 are inserted together, which can quickly and accurately assemble the liquid cooler 00. The assembly is simple, fast and efficient, and the product precision is high. Third, the liquid cooler 00 has integrated fixed grounding terminals 01 and signal pins 05, which are convenient for quick and fast integrated installation, further improving assembly efficiency and reducing equipment volume.

[0036] Furthermore, the rear side of the positioning retaining ring 014 has an inner chamfered inner slanted positioning surface, while the front end of the positioning end tube 30 has an outer chamfered frustum-shaped outer slanted positioning surface 33. These inner and outer slanted positioning surfaces 33 are in close contact with each other. This has the beneficial effect of providing both radial and circumferential positioning, further improving positioning and assembly accuracy.

[0037] Preferably, the inner wall of the positioning end tube 30 is further provided with an annular positioning shoulder 34. The end of the DC terminal 03 is positioned in front of the positioning shoulder 34, and the front end of the thermal conductive ring 4 is positioned and abutted against the rear side of the positioning shoulder 34. This advantageously provides axial positioning of the DC terminal 03 and, in conjunction with the positioning end face 30, achieves bidirectional, high-precision positioning.

[0038] Preferably, the rear end wall of the power socket 010 is provided with a first inner chamfer 013 for facilitating alignment. The beneficial effect is that this arrangement facilitates alignment and rapid assembly.

[0039] Preferably, the signal shaft hole 32 and the ground shaft hole 31 are provided with a vertically opening mounting opening 35. The beneficial effect is that the mounting opening 35 allows the ground terminal 01 and the signal pin 05 to be quickly mounted from above.

[0040] Preferably, arc-shaped prismatic stoppers 37 are symmetrically positioned between the signal and grounding holes 32 and 31. These two stoppers 37 gradually reduce the size of the inlet opening to a point larger than the inner opening. This arrangement advantageously locks the assembled ground terminal 01 and signal pin 05, preventing them from shifting during use.

[0041] Preferably, the front ends of the signal shaft hole 32 and the ground shaft hole 31 are further provided with an outer chamfer 36, and the rear ends of the ground socket 011 and the signal socket 012 are provided with a second inner chamfer 015. After the outer chamfer 36 is inserted into the ground socket 011 and the signal socket 012, it abuts against the second inner chamfer 015. This advantageous effect is that the chamfer arrangement facilitates the positioning of the signal shaft hole 32 and the ground shaft hole 31.

[0042] Preferably, four signal shaft holes 32 are provided at the four corners of the upper and lower ends of the integrated connecting plate 3, a signal shaft hole 32 is provided in the middle of the upper end of the integrated connecting plate 3 and a grounding shaft hole 31 is provided in the middle of the lower end, and a signal shaft hole 32 is provided in the middle position of the integrated connecting plate 3.

[0043] Furthermore, a transverse partition 102 is integrally connected between the two heat transfer tubes 101 of the cooling chamber 10. The transverse partition 102 and the heat transfer tube 101 are attached to the cover plate 2, thereby dividing the cooling chamber 10 into an annular chamber. Two inlet and outlet liquid pipes 7 are symmetrically arranged in the middle of the upper and lower ends of the annular chamber. Each inlet and outlet liquid pipe 7 faces the middle of the upper end and the middle of the lower end of the annular chamber. Liquid enters from one inlet and outlet liquid pipe 7 and is divided, flows through the channels surrounding the heat transfer tube 101 on both sides of the cooling chamber 10, and merges with the inlet and outlet liquid pipe 7 at the other end to flow out. Preferably, a vertical partition 103 is integrally provided between the transverse partition 102 and the upper and lower walls of the cooling chamber 10. The vertical partition 103 is slightly shorter than the transverse partition 102 and is gap-connected to the cover plate 2, dividing the cooling chamber 10 into two sub-cavities, each surrounding the heat transfer tube. The two inlet and outlet liquid pipes 7 face the vertical partition 103, and the coolant is evenly guided into the two sub-cavities through the vertical partition 103. The beneficial effect is that the setting of the liquid cooling tank enables the liquid to flow evenly through the two sub-cavities, so that the cooling effect of the two sub-cavities is the same, which helps to uniformly and evenly cool the temperature.

[0044] Furthermore, both inlet and outlet pipes 7 are fixed with nozzles 8, and the two nozzles 8 are connected to the coolant circulation circuit. Preferably, the power cable 09 is a liquid cooling cable, and the inlet and outlet pipes 7 are integrally provided on the rear side of the cover plate 2. The inlet and outlet pipes 7 are threadedly connected to a nozzle 8. One end of the liquid pipe 9 is inserted through the sleeve of the nozzle 8, and the other end is tilted to connect to the liquid shaft hole 090 of the liquid cooling power cable 09. The liquid shaft hole 090 is connected to the coolant circulation circuit. The beneficial effects are: the structure is simple, the equipment is highly integrated, the number of equipment components is effectively reduced, and it is convenient for the renovation of old equipment.

[0045] Preferably, the rear end wall of the box body 1 is provided with an outer end ring 104, and the front end surface of the cover plate 2 is provided with an outer positioning groove 20, into which the outer end ring 104 is inserted. The front ends of the two spool holes 21 of the cover plate 2 are provided with inner positioning grooves 22, into which the heat transfer tube 101 is inserted. The outer positioning groove 20 is provided with an outer sealing ring 5, and the inner positioning groove 22 is provided with an inner sealing ring 6. The double sealing rings improve the sealing performance of the liquid cooling box and prevent the cooling liquid from overflowing.

[0046] Furthermore, the inner wall of each spool hole 21 also has several limiting posts 23 protruding symmetrically toward the center of the circle. The rectangular rear connection end of the DC terminal 03 and the rectangular connection terminal 091 of the power cable 09 are guided into the thermal ring 4 and positioned by the limiting posts 23. The beneficial effect is that the limiting posts 23 well position the connection ends.

[0047] Preferably, the box body 1 and the cover plate 2 are welded by ultrasonic welding or laser welding.

[0048] Preferably, the cover plate 2 is provided with connecting lugs 24 at the four corners. Four rear coupling blocks 016 are provided within the rear cavity of the front mounting plate 01, facing the connecting lugs 24. Screws are threadedly connected to the threaded holes of the rear coupling blocks 016 through the first through-holes of the connecting lugs 24, allowing the liquid cooler 00 to be removably connected to the central cavity of the front mounting plate 01. This arrangement offers the advantages of convenient and simple assembly and a compact design.

[0049] Preferably, the rear mounting plate 02 at the rear end of the seat shell is clamped to the front mounting plate 01, the grounding wire 040 and the signal wire 050 connected to the grounding terminal 04 and the signal pin 05 are sleeved at the rear end of the rear mounting plate 02, and the two power cables 09 are connected to the rear mounting plate 02 through the tail cover 06 and the sealing body sleeve; the panel 07 of the seat shell is threadedly connected to the front of the front mounting plate 01, and a protective cover 08 is hinged at the front end of the panel 07.

[0050] 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 DC charging station with an integrated precision quick-install liquid cooler, characterized by: include: A seat shell, wherein the front mounting plate (01) of the seat shell is provided with a power jack (010), a grounding jack (011) and a signal jack (012) at the front end thereof, and a positioning retaining ring (014) is integrally provided at the rear end of the inner wall of the power jack (010); A liquid cooler (00) includes a box body (1), a cover plate (2) and an integrated connecting plate (3); the front end of the box body (1) is integrally formed and connected to the integrated connecting plate (3) and the rear end is welded to the cover plate (2); two heat transfer pipes (101) connected to the positioning end pipe (30) are provided in the cooling cavity (10) of the box body (1); the front end of the positioning end pipe (30) of the integrated connecting plate (3) is plugged into a power socket (010) and fits a positioning retaining ring (014); the four corners of the cover plate (2) are connected to the front mounting plate (01) by screws; The front ends of the two DC terminals (03) are inserted into the power sockets (010) and the rear ends are sleeved in the positioning end tubes (30), and the connection ends of the two DC terminals (03) and the power cables (09) are sleeved in the heat transfer rings (4) in the heat transfer tubes (101); A grounding terminal (04) has a rear end sleeve connected to a grounding shaft hole (31) of an integrated connecting plate (3) and a front end sleeve connected to a grounding socket (011); a plurality of signal pins (05) have rear end sleeves connected to a signal shaft hole (32) of an integrated connecting plate (3) and a front end sleeve connected to a signal socket (012).

2. The DC charging station according to claim 1, characterized in that: The inclined positioning surface of the positioning retaining ring (014) is in contact with the outer inclined positioning surface (33) at the front end of the positioning end tube (30).

3. The DC charging station according to claim 1, characterized in that: The front side of the positioning shoulder (34) on the inner wall of the positioning end tube (30) is in contact with the end of the DC terminal (03), and the rear side is in contact with the front end of the heat conducting ring (4).

4. The DC charging station according to claim 1, characterized in that: The rear end wall of the power socket (010) is provided with a first inner chamfer (013) for facilitating positioning and alignment.

5. The DC charging station according to claim 1, characterized in that: The signal shaft hole (32) and the grounding shaft hole (31) are provided with a vertically opening mounting opening (35).

6. The DC charging station according to claim 5, characterized in that: A circular arc prism-shaped limiting column (37) is symmetrically provided between the signal shaft hole (32) and the grounding shaft hole (31).

7. The DC charging station according to claim 6, characterized in that: The front ends of the signal shaft hole (32) and the grounding shaft hole (31) are further provided with an outer chamfer (36), and the rear ends of the grounding jack (011) and the signal jack (012) are provided with a second inner chamfer (015), and the outer chamfer (36) is inserted into and fits the second inner chamfer (015).

8. The DC charging station according to claim 1, characterized in that: A transverse partition (102) is integrally connected between the two heat transfer tubes (101) of the cooling chamber (10); the transverse partition (102) and the heat transfer tube (101) are attached to the cover plate (2); and two liquid inlet and outlet pipes (7) symmetrically arranged in the middle of the cover plate (2) face the middle of the upper end and the middle of the lower end of the cooling chamber (10).

9. The DC charging station according to claim 8, characterized in that: A vertical partition (103) is integrally provided between the transverse partition (102) and the upper and lower walls of the cooling cavity (10); the vertical partition (103) is slightly shorter than the transverse partition (102) and is gap-connected to the cover plate (2).

10. The DC charging station according to claim 1, characterized in that: The inner wall of each thread shaft hole (21) is also provided with a plurality of limiting columns (23) symmetrically protruding toward the center of the circle.

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