Cooling box, electric connection module and charging device

Abstract

The utility model discloses a cooling box, an electric connection module and a charging device. The cooling box comprises a box body with a bottom opening; the bottom cover is mounted on the bottom opening of the box body; the multiple pipe joints are integrally formed with the box body and communicate with the interior of the box body so that the cooling liquid can flow into the box body or flow out of the box body through the pipe joints; and the heat-conducting insulating layer wraps the outer part of the box body. And the outer part of the bottom cover is wrapped by a heat-conducting insulating layer or a heat-conducting insulating cap sleeved on the lower part of the box body. The bottom of the cooling box is suitable for being in thermal contact with the charging terminal, so that heat of the charging terminal can be transmitted to the cooling liquid in the box body through the heat conduction insulating layer and the bottom cover, and the charging terminal is cooled. Welding of pipe joints and pasting of heat conduction insulating films are not needed, manufacturing of the cooling box is simplified, and cost is reduced. Besides, in some embodiments of the utility model, the cooling liquid can smoothly flow among the plurality of pipe joints through the flow channels in the box body, so that the cooling effect is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a cooling box, including the electric connection module of the cooling box and the charging device including the electric connection module. BACKGROUND

[0002] In the prior art, the charging base usually includes a charging base housing, a charging terminal arranged in the charging base housing, and a charging cable electrically connected with the charging terminal. In order to improve the charging speed, it is necessary to increase the charging current, and the current charging current is as high as 600A, and it may be further increased to 1000A in the future. When such a large current flows through the charging cable and the charging terminal, the temperature inside the charging base housing and the temperature of the charging cable will rise sharply. In order to prevent the temperature from rising too much, in the prior art, the diameter of the charging cable and the size of the charging terminal are usually increased, but this will increase the volume and weight of the charging base product, and will result in a higher cost.

[0003] In the prior art, in order to prevent the temperature of the charging cable and the charging terminal from rising sharply, recently, a liquid cooling solution has been proposed, which includes a cooling box. However, the existing cooling box needs to weld pipe joints and paste heat-conducting insulation film, and the manufacturing process is complex and the cost is high. In addition, the box body of the existing cooling box is a cuboid cavity, and the cooling liquid flows poorly at the corners thereof, which will affect the normal flow of the cooling liquid and seriously affect the cooling effect. SUMMARY

[0004] The utility model aims to solve at least one aspect of the above problems and defects in the prior art.

[0005] According to one aspect of the utility model, a cooling box is provided. The cooling box includes: a box body having a bottom opening; a bottom cover installed on the bottom opening of the box body; a plurality of pipe joints integrally formed with the box body and communicating with the inside of the box body to allow the cooling liquid to flow into or out of the box body via the pipe joints; and a heat-conducting insulation layer wrapped on the outside of the box body. The outside of the bottom cover is wrapped by the heat-conducting insulation layer or a heat-conducting insulation cap sleeved on the lower part of the box body. The bottom of the cooling box is adapted to be in thermal contact with the charging terminal, so that the heat of the charging terminal can be transferred into the cooling liquid in the box body via the heat-conducting insulation layer and the bottom cover to cool the charging terminal.

[0006] According to another aspect of the present application, a cooling box is provided. The cooling box includes: a box body having a bottom opening; a bottom cover installed on the bottom opening of the box body; a plurality of pipe joints integrally formed with the box body and in communication with the interior of the box body to allow cooling liquid to flow into or out of the box body via the pipe joints; and a thermally conductive insulation layer wrapped on the exterior of the box body and the bottom cover. The bottom of the cooling box is adapted to be in thermal contact with a charging terminal, so that the heat of the charging terminal can be transferred into the cooling liquid in the box body via the thermally conductive insulation layer and the bottom cover to cool the charging terminal.

[0007] According to an exemplary embodiment of the present application, the plurality of pipe joints and the box body are an integral die casting or an integral machined part.

[0008] According to another exemplary embodiment of the present application, the bottom cover is welded to the box body.

[0009] According to another exemplary embodiment of the present application, the thermally conductive insulation layer is an integral injection molding part injected onto the exterior of the box body and the bottom cover.

[0010] According to another exemplary embodiment of the present application, the box body and the bottom cover are aluminum parts or aluminum alloy parts.

[0011] According to another exemplary embodiment of the present application, the cooling box includes a first pipe joint for connecting with a cooling core pipe of a charging cable and a second pipe joint for connecting with an inlet pipe; the cooling liquid flows into the cooling box from the inlet pipe and out of the cooling core pipe of the charging cable to cool the charging terminal and the charging cable.

[0012] According to another exemplary embodiment of the present application, the cooling box includes a first pipe joint for connecting with a cooling core pipe of a charging cable and a second pipe joint for connecting with an outlet pipe; the cooling liquid flows into the cooling box from the cooling core pipe of the charging cable and out of the outlet pipe to cool the charging terminal and the charging cable.

[0013] According to another exemplary embodiment of the present application, the cooling box includes two first pipe joints and one second pipe joint, and the one second pipe joint is located between the two first pipe joints.

[0014] According to another exemplary embodiment of the present application, a flow channel connecting the plurality of pipe joints is formed in the box body, and the flow channel is streamlined so that the cooling liquid in the box body can flow smoothly between the plurality of pipe joints via the flow channel.

[0015] According to another aspect of the present application, a cooling tank is provided. The cooling tank includes a tank body having a bottom opening, a bottom cover installed on the bottom opening of the tank body, a plurality of pipe joints integrally formed with the tank body and communicating with the interior of the tank body to allow a cooling liquid to flow into or out of the tank body via the pipe joints, a thermally conductive insulation layer wrapped on the exterior of the tank body, and a thermally conductive insulation cap having a peripheral wall fitted onto the thermally conductive insulation layer of the lower portion of the tank body and a bottom wall abutting against the bottom surface of the bottom cover. The bottom portion of the cooling tank is adapted to be in thermal contact with a charging terminal, so that the heat of the charging terminal can be transferred into the cooling liquid in the tank body via the thermally conductive insulation cap and the bottom cover to cool the charging terminal.

[0016] According to an exemplary embodiment of the present application, the peripheral wall of the thermally conductive insulation cap is interference-fitted with the thermally conductive insulation layer of the lower portion of the tank body to retain the thermally conductive insulation cap onto the lower portion of the tank body.

[0017] According to another exemplary embodiment of the present application, the thermally conductive insulation cap is an integral injection-molded piece having elasticity.

[0018] According to another exemplary embodiment of the present application, the plurality of pipe joints and the tank body are an integral die-cast piece or an integral machined piece.

[0019] According to another exemplary embodiment of the present application, the bottom cover is welded to the tank body.

[0020] According to another exemplary embodiment of the present application, the thermally conductive insulation layer is an integral injection-molded piece injected onto the exterior of the tank body.

[0021] According to another exemplary embodiment of the present application, the tank body and the bottom cover are aluminum pieces or aluminum alloy pieces.

[0022] According to another exemplary embodiment of the present application, the cooling tank includes a first pipe joint for connecting with a cooling core tube of a charging cable and a second pipe joint for connecting with a liquid inlet pipe. The cooling liquid flows into the cooling tank from the liquid inlet pipe and out of the cooling core tube of the charging cable to cool the charging terminal and the charging cable.

[0023] According to another exemplary embodiment of the present application, the cooling box includes a first pipe joint and a second pipe joint, the first pipe joint is used to connect with the cooling core pipe of the charging cable, and the second pipe joint is used to connect with the liquid outlet pipe; the cooling liquid flows into the cooling box from the cooling core pipe of the charging cable and flows out from the liquid outlet pipe, so as to cool the charging terminal and the charging cable.

[0024] According to another exemplary embodiment of the present application, the cooling box includes two first pipe joints and one second pipe joint, and the one second pipe joint is located between the two first pipe joints.

[0025] According to another exemplary embodiment of the present application, a flow channel connecting the plurality of pipe joints is formed in the box body, the flow channel is streamline-shaped, so that the cooling liquid in the box body can flow smoothly between the plurality of pipe joints via the flow channel.

[0026] According to another aspect of the present application, an electrical connection module is provided. The electrical connection module includes: the aforementioned cooling box; and a charging cable including a cooling core pipe and a conductor core used to electrically connect with a charging terminal, the cooling core pipe of the charging cable is connected to the pipe joint of the cooling box, so that the cooling liquid can flow through the cooling box and the charging cable.

[0027] According to an exemplary embodiment of the present application, the main body of the conductor core of the charging cable is tubular and wrapped outside the cooling core pipe, and the charging cable further includes an outer insulation layer wrapped outside the main body of the conductor core.

[0028] According to another exemplary embodiment of the present application, the conductor core has a connecting end exposed from the outer insulation layer, the connecting end is flat and adapted to be welded to the welding end of the charging terminal; the cooling core pipe of the charging cable is exposed from the outer insulation layer and detachably connected to the pipe joint.

[0029] According to another exemplary embodiment of the present application, the electrical connection module further includes: a charging terminal electrically connected to the conductor core of the charging cable, the bottom of the cooling box is in thermal contact with the charging terminal, so as to cool the charging terminal.

[0030] According to another exemplary embodiment of the present application, the charging terminal has a flat welding end, the welding end has a top surface and a bottom surface opposite in the thickness direction thereof; the cooling box has a flat bottom surface, and the bottom surface of the cooling box is in thermal contact with the top surface of the welding end of the charging terminal.

[0031] According to another exemplary embodiment of the present application, the electric connection module further comprises a fixing device for fixing the cooling box to the charging terminal, so that the bottom of the cooling box is in reliable thermal contact with the charging terminal.

[0032] According to another exemplary embodiment of the present application, the electric connection module further comprises a fixing device for fixing the cooling box to the charging terminal, so that the bottom of the cooling box is in reliable thermal contact with the charging terminal.

[0033] According to another aspect of the present application, a charging device is provided. The charging device comprises a housing and the aforementioned electric connection module. The charging terminal and the cooling box of the electric connection module are installed in the housing, and the charging cable of the electric connection module is drawn out from the rear end of the housing.

[0034] According to an exemplary embodiment of the present application, the charging device is a charging base or a charging gun.

[0035] In the aforementioned exemplary embodiments of the present application, the pipe joint and the box body are integrally formed, and the box body and the bottom cover are directly wrapped in the heat-conducting insulation layer. Therefore, the present application does not need to weld the pipe joint and paste the heat-conducting insulation film, simplifying the manufacturing process of the cooling box and reducing the manufacturing cost.

[0036] In the aforementioned exemplary embodiments of the present application, the pipe joint and the box body are integrally formed, and the box body and the bottom cover are directly wrapped in the heat-conducting insulation layer. Therefore, the present application does not need to weld the pipe joint and paste the heat-conducting insulation film, simplifying the manufacturing process of the cooling box and reducing the manufacturing cost.

[0037] In addition, in the aforementioned exemplary embodiments of the present application, a flow channel connecting the plurality of pipe joints is formed in the box body, so that the cooling liquid can flow smoothly between the plurality of pipe joints via the flow channel, improving the cooling effect.

[0038] Other objects and advantages of the present application will become apparent and help to understand the present application from the following description of the present application with reference to the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0039] Figure 1 shows a perspective view of an electric connection module according to an exemplary first embodiment of the present application;

[0040] Figure 2 shows an exploded view of an electric connection module according to an exemplary first embodiment of the present application;

[0041] Figure 3 shows an exploded view of a charging cable and a charging terminal of an electrical connection module according to an exemplary first embodiment of the present utility model;

[0042] Figure 3A shows a cross-sectional view of a charging cable according to an exemplary first embodiment of the present utility model;

[0043] Figure 4 shows a lateral cross-sectional view of a cooling box of an electrical connection module according to an exemplary first embodiment of the present utility model;

[0044] Figure 5 shows a perspective view from the top of a cooling box according to an exemplary first embodiment of the present utility model, wherein the thermally conductive insulation layer is not shown;

[0045] Figure 6 shows a perspective view from the bottom of a cooling box according to an exemplary first embodiment of the present utility model, wherein the thermally conductive insulation layer is not shown;

[0046] Figure 7 shows an exploded view from the bottom of a cooling box according to an exemplary first embodiment of the present utility model, wherein the thermally conductive insulation layer is not shown;

[0047] Figure 8 shows a perspective view of an electrical connection module according to an exemplary second embodiment of the present utility model;

[0048] Figure 9 shows an exploded view of an electrical connection module according to an exemplary second embodiment of the present utility model;

[0049] Figure 10 shows an exploded view of a charging cable and a charging terminal of an electrical connection module according to an exemplary second embodiment of the present utility model;

[0050] Figure 10A shows a cross-sectional view of a charging cable according to an exemplary second embodiment of the present utility model;

[0051] Figure 11 shows a lateral cross-sectional view of a cooling box of an electrical connection module according to an exemplary second embodiment of the present utility model;

[0052] Figure 12 shows a perspective view from the top of a cooling box according to an exemplary second embodiment of the present utility model, wherein the thermally conductive insulation layer is not shown;

[0053] Figure 13A perspective view from the bottom of a cooling box according to an exemplary second embodiment of the present application is shown, wherein the thermally conductive insulation layer is not shown.

[0054] Figure 14 An exploded view from the bottom of a cooling box according to an exemplary second embodiment of the present application is shown, wherein the thermally conductive insulation layer is not shown.

[0055] Figure 15 An exploded view of a cooling box according to an exemplary second embodiment of the present application is shown, wherein the thermally conductive insulation cap has not yet been fitted onto the box body of the cooling box. DETAILED DESCRIPTION

[0056] The technical solutions of the present application will be further described in detail below with reference to the drawings. In the description, identical or similar reference numerals indicate identical or similar components. The following description of the embodiments of the present application with reference to the drawings is intended to explain the general inventive concept of the present application and should not be construed as a limitation of the present application.

[0057] In addition, in the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the embodiments of the present disclosure. It will be apparent, however, that one or more embodiments can be practiced without these specific details. In other instances, well-known structures and devices are illustrated in block diagram form in order to simplify the figures.

[0058] According to one general inventive concept, a cooling box is provided. The cooling box includes a box body having a bottom opening, a bottom cover installed on the bottom opening of the box body, a plurality of pipe joints integrally formed with the box body and communicating with the interior of the box body to allow a cooling liquid to flow into or out of the box body via the pipe joints, and a thermally conductive insulation layer wrapped on the exterior of the box body. The exterior of the bottom cover is wrapped by the thermally conductive insulation layer or by a thermally conductive insulation cap fitted on the lower portion of the box body. The bottom of the cooling box is adapted to be in thermal contact with a charging terminal, such that the heat of the charging terminal can be transferred into the cooling liquid within the box body via the thermally conductive insulation layer and the bottom cover to cool the charging terminal.

[0059] According to another general technical concept of the present application, a cooling box is provided. The cooling box includes: a box body having a bottom opening; a bottom cover installed on the bottom opening of the box body; a plurality of pipe joints integrally formed with the box body and communicating with the inside of the box body to allow a coolant to flow into or out of the box body via the pipe joints; and a thermally conductive insulation layer wrapped on the outside of the box body and the bottom cover. The bottom of the cooling box is adapted to be in thermal contact with a charging terminal, so that heat of the charging terminal can be transferred into the coolant in the box body via the thermally conductive insulation layer and the bottom cover to cool the charging terminal.

[0060] According to another general technical concept of the present application, a cooling box is provided. The cooling box includes: a box body having a bottom opening; a bottom cover installed on the bottom opening of the box body; a plurality of pipe joints integrally formed with the box body and communicating with the inside of the box body to allow a coolant to flow into or out of the box body; a thermally conductive insulation layer wrapped on the outside of the box body; and a thermally conductive insulation cap having its peripheral wall fitted onto the thermally conductive insulation layer of the lower part of the box body and its bottom wall abutting onto the bottom surface of the bottom cover. The bottom of the cooling box is adapted to be in thermal contact with a charging terminal, so that heat of the charging terminal can be transferred into the coolant in the box body via the thermally conductive insulation cap and the bottom cover to cool the charging terminal.

[0061] According to another general technical concept of the present application, an electrical connection module is provided. The electrical connection module includes: the aforementioned cooling box; and a charging cable including a cooling core tube and a conductor core for electrically connecting with a charging terminal, the cooling core tube of the charging cable being connected to one of the pipe joints of the cooling box, so that the coolant can flow through the cooling box and the charging cable.

[0062] According to another general technical concept of the present application, a charging device is provided. The charging device includes: a housing and the aforementioned electrical connection module. The charging terminal and the cooling box of the electrical connection module are installed in the housing, and the charging cable of the electrical connection module is drawn out from the rear end of the housing.

[0063] First embodiment

[0064] Figures 1 to 7 A first embodiment according to the present application is shown. Therein, Figure 1 A perspective view of an electrical connection module according to an exemplary first embodiment of the present application is shown; Figure 2 An exploded view of an electrical connection module according to an exemplary first embodiment of the present application is shown; Figure 3shows an exploded view of the charging cable 2 and the charging terminal 3 of the electrical connection module according to an exemplary first embodiment of the present utility model; Figure 3A shows a cross-sectional view of the charging cable 2 according to an exemplary first embodiment of the present utility model; Figure 4 shows a lateral cross-sectional view of the cooling tank 1 of the electrical connection module according to an exemplary first embodiment of the present utility model; Figure 5 shows a perspective view of the cooling tank 1 from the top according to an exemplary first embodiment of the present utility model, wherein the thermally conductive insulation layer 13 is not shown; Figure 6 shows a perspective view of the cooling tank 1 from the bottom according to an exemplary first embodiment of the present utility model, wherein the thermally conductive insulation layer 13 is not shown; Figure 7 shows an exploded view of the cooling tank 1 from the bottom according to an exemplary first embodiment of the present utility model, wherein the thermally conductive insulation layer 13 is not shown.

[0065] As shown in Figures 1 to 7 an exemplary embodiment of the present utility model, a cooling tank 1 is disclosed. The cooling tank 1 comprises a tank body 10, a bottom cover 11, a plurality of pipe joints 12 and a thermally conductive insulation layer 13. The tank body 10 has a bottom opening. The bottom cover 11 is mounted on the bottom opening of the tank body 10. The plurality of pipe joints 12 are integrally formed with the tank body 10 and communicate with the interior of the tank body 10 to allow the cooling liquid to flow into or out of the tank body 10 via the pipe joints 12. The thermally conductive insulation layer 13 is wrapped on the exterior of the tank body 10 and the bottom cover 11. The bottom of the cooling tank 1 is adapted to be in thermal contact with the charging terminal 3, so that the heat of the charging terminal 3 can be transferred into the cooling liquid in the tank body 10 via the thermally conductive insulation layer 13 and the bottom cover 11 to cool the charging terminal 3.

[0066] As shown in Figures 1 to 7 in the illustrated embodiment, the plurality of pipe joints 12 and the tank body 10 can be an integral die casting or an integral machined part.

[0067] As shown in Figures 1 to 7 in the illustrated embodiment, the bottom cover 11 is welded to the tank body 10, for example, can be welded to the tank body 10 by a laser automatic welding process, which can improve the welding efficiency.

[0068] As shown in Figures 1 to 7 in the illustrated embodiment, the thermally conductive insulation layer 13 is an integral injection molding part directly injection molded on the exterior of the tank body 10 and the bottom cover 11. This can improve the manufacturing efficiency. The thermally conductive insulation layer 13 functions as thermal conduction and electrical insulation.

[0069] As shown in Figures 1 to 7As shown in the illustrated embodiment, the housing 10 and the bottom cover 11 are made of aluminum or aluminum alloy. However, this invention is not limited to this, and the housing 10 and the bottom cover 11 can also be made of other suitable thermally conductive metals.

[0070] like Figures 1 to 7 As shown in the illustrated embodiment, the cooling tank 1 includes a first pipe connector 121 and a second pipe connector 122. The first pipe connector 121 is used to connect to the cooling core tube 21 of the charging cable 2, and the second pipe connector 122 is used to connect to the liquid inlet pipe (not shown). Coolant flows into the cooling tank 1 from the liquid inlet pipe and flows out from the cooling core tube 21 of the charging cable 2 to cool the charging terminal 3 and the charging cable 2.

[0071] However, this utility model is not limited to the illustrated embodiment. For example, in another exemplary embodiment of this utility model, the cooling tank 1 includes a first pipe connector 121 and a second pipe connector 122. The first pipe connector 121 is used to connect to the cooling core tube 21 of the charging cable 2, and the second pipe connector 122 is used to connect to the outlet pipe (not shown). Coolant flows from the cooling core tube 21 of the charging cable 2 into the cooling tank 1 and flows out from the outlet pipe to cool the charging terminal 3 and the charging cable 2.

[0072] like Figures 1 to 7 As shown in the illustrated embodiment, the cooling box 1 includes two first pipe joints 121 and one second pipe joint 122, with the second pipe joint 122 located between the two first pipe joints 121.

[0073] like Figures 1 to 7 As shown in the illustrated embodiment, a flow channel 101 is formed in the housing 10 to connect multiple pipe joints 12, allowing the coolant in the housing 10 to flow smoothly between the multiple pipe joints 12 via the flow channel 101. The flow channel 101 is streamlined to ensure that the coolant can flow smoothly along the flow channel 101.

[0074] like Figures 1 to 7 As shown, in another exemplary embodiment of this utility model, an electrical connection module is also disclosed. This electrical connection module includes a cooling box 1 and a charging cable 2. The charging cable 2 includes a cooling core tube 21 and a conductor core 22 for electrical connection with a charging terminal 3. The cooling core tube 21 of the charging cable 2 is connected to a pipe connector 12 of the cooling box 1, allowing coolant to flow through the cooling box 1 and the charging cable 2.

[0075] like Figures 1 to 7 As shown in the illustrated embodiment, the main body of the conductor core 22 of the charging cable 2 is tubular and wrapped around the outside of the cooling core tube 21. The charging cable 2 also includes an outer insulation layer 23 wrapped around the outside of the main body of the conductor core 22.

[0076] like Figures 1 to 7As shown in the illustrated embodiment, the conductor core 22 has a connection end 22a exposed from the outer insulating layer 23, the connection end 22a being flat and adapted to be soldered to the solder end 3a of the charging terminal 3. The cooling core pipe 21 of the charging cable 2 is exposed from the outer insulating layer 23 and detachably connected to the first pipe joint 121 of the cooling tank 1.

[0077] As shown in the illustrated embodiment, the cooling core pipe 21 of the charging cable 2 can serve as a liquid outlet pipe. The electrical connection module further comprises a liquid inlet pipe (not shown) detachably connected to the second pipe joint 122 of the cooling tank 1 for supplying the cooling liquid to the cooling tank 1 and the cooling core pipe 21 of the charging cable 2. Figures 1 to 7

[0078] However, the utility model is not limited to the illustrated embodiment, for example, the cooling core pipe 21 of the charging cable 2 can also serve as a liquid inlet pipe for supplying the cooling liquid to the cooling tank 1. At this time, the electrical connection module further comprises a liquid outlet pipe (not shown) detachably connected to the second pipe joint 122 of the cooling tank 1.

[0079] As shown in the illustrated embodiment, the electrical connection module further comprises the charging terminal 3 electrically connected to the conductor core 22 of the charging cable 2. The bottom of the cooling tank 1 is in thermal contact with the charging terminal 3 to cool the charging terminal 3. Figures 1 to 7 As shown in the illustrated embodiment, the charging terminal 3 has a flat solder end 3a having opposite top and bottom surfaces in the thickness direction thereof. The cooling tank 1 has a flat bottom surface in thermal contact with the top surface of the solder end 3a of the charging terminal 3.

[0080] Figures 1 to 7 As shown in the illustrated embodiment, the electrical connection module comprises two charging cables 2 and two charging terminals 3, the cooling core pipes 21 of the two charging cables 2 being respectively connected to the two pipe joints 12 of the cooling tank 1, and the conductor cores 22 of the two charging cables 2 being respectively electrically connected to the two charging terminals 3.

[0081] As shown in the illustrated embodiment, the electrical connection module further comprises a fixing device (not shown) for fixing the cooling tank 1 to the charging terminal 3 so that the bottom of the cooling tank 1 is in reliable thermal contact with the charging terminal 3. Figures 1 to 7 As shown in the illustrated embodiment, the electrical connection module further comprises a fixing device (not shown) for fixing the cooling tank 1 to the charging terminal 3 so that the bottom of the cooling tank 1 is in reliable thermal contact with the charging terminal 3.

[0082] Figures 1 to 7 As shown in the illustrated embodiment, the electrical connection module further comprises a fixing device (not shown) for fixing the cooling tank 1 to the charging terminal 3 so that the bottom of the cooling tank 1 is in reliable thermal contact with the charging terminal 3.

[0083] As shown in the illustrated embodiment, the electrical connection module further comprises a fixing device (not shown) for fixing the cooling tank 1 to the charging terminal 3 so that the bottom of the cooling tank 1 is in reliable thermal contact with the charging terminal 3. Figures 1 to 7 ​​​As shown, in another exemplary embodiment of the present application, a charging device is also disclosed. The charging device comprises a housing (not shown) and the aforementioned electrical connection module. The charging terminals 3 and the cooling box 1 of the electrical connection module are installed in the housing, and the charging cable 2 of the electrical connection module is led out from the rear end of the housing.

[0084] As shown, in the illustrated embodiment, the charging device can be a charging base or a charging gun. Figures 1 to 7

[0085] Second embodiment

[0086] A second embodiment according to the present application is shown. Among others, Figures 8 to 14 A perspective view of the electrical connection module according to an exemplary second embodiment of the present application is shown; Figure 8 An exploded view of the electrical connection module according to an exemplary second embodiment of the present application is shown; Figure 9 An exploded view of the electrical connection module according to an exemplary second embodiment of the present application is shown; Figure 10 An exploded view of the charging cable 2 and the charging terminals 3 of the electrical connection module according to an exemplary second embodiment of the present application is shown;

[0087] Figure 10A A cross-sectional view of the charging cable 2 according to an exemplary second embodiment of the present application is shown; Figure 11 A cross-sectional view of the cooling box 1 of the electrical connection module according to an exemplary second embodiment of the present application is shown; Figure 12 A perspective view of the cooling box 1 according to an exemplary second embodiment of the present application is shown from the top, wherein the thermally conductive insulation layer 13 is not shown; Figure 13 A perspective view of the cooling box 1 according to an exemplary second embodiment of the present application is shown from the bottom, wherein the thermally conductive insulation layer 13 is not shown; Figure 14 An exploded view of the cooling box 1 according to an exemplary second embodiment of the present application is shown from the bottom, wherein the thermally conductive insulation layer 13 is not shown; Figure 15 An exploded view of the cooling box 1 according to an exemplary second embodiment of the present application is shown, wherein the thermally conductive insulation cap 14 has not yet been fitted onto the box body 10 of the cooling box 1.

[0088] As shown, in another exemplary embodiment of the present application, a charging device is also disclosed. The charging device comprises a housing (not shown) and the aforementioned electrical connection module. The charging terminals 3 and the cooling box 1 of the electrical connection module are installed in the housing, and the charging cable 2 of the electrical connection module is led out from the rear end of the housing. Figures 8 to 14As shown, in an exemplary embodiment of this utility model, a cooling box 1 is disclosed. The cooling box 1 includes: a box body 10, a bottom cover 11, a plurality of pipe joints 12, a thermally conductive insulating layer 13, and a thermally conductive insulating cap 14. The box body 10 has a bottom opening. The bottom cover 11 is mounted on the bottom opening of the box body 10. The plurality of pipe joints 12 are integrally formed with the box body 10 and communicate with the interior of the box body 10 to allow coolant to flow into or out of the box body 10 through the pipe joints 12. The thermally conductive insulating layer 13 covers the exterior of the box body 10. The peripheral wall 142 of the thermally conductive insulating cap 14 is fitted onto the thermally conductive insulating layer 13 at the lower part of the box body 10, and the bottom wall 141 of the thermally conductive insulating cap 14 abuts against the bottom surface of the bottom cover 11. The bottom of the cooling box 1 is adapted to be in thermal contact with the charging terminal 3, so that the heat of the charging terminal 3 can be transferred to the coolant inside the box body 10 through the thermally conductive insulating layer 13 and the bottom cover 11 to cool the charging terminal 3.

[0089] like Figures 8 to 14 As shown, in the illustrated embodiment, the peripheral wall 142 of the thermally conductive insulating cap 14 is interference-fitted with the thermally conductive insulating layer 13 at the lower part of the housing 10 to hold the thermally conductive insulating cap 14 to the lower part of the housing 10.

[0090] like Figures 8 to 14 As shown in the illustrated embodiment, the thermally conductive insulating cap 14 can be a flexible, one-piece injection-molded part. This makes it easier to fit the thermally conductive insulating cap 14 onto the lower part of the housing 10.

[0091] like Figures 8 to 14 As shown in the illustrated embodiment, the plurality of pipe fittings 12 and housing 10 can be integral die-cast parts or integral machined parts.

[0092] like Figures 8 to 14 As shown in the illustrated embodiment, the bottom cover 11 is welded to the housing 10. For example, it can be welded to the housing 10 by a laser automatic welding process, which can improve welding efficiency.

[0093] like Figures 8 to 14 As shown in the illustrated embodiment, the thermally conductive insulating layer 13 is a one-piece injection molded part directly injection molded onto the exterior of the housing 10. This improves manufacturing efficiency. The function of the thermally conductive insulating layer 13 is to conduct heat and provide electrical insulation.

[0094] like Figures 8 to 14 As shown in the illustrated embodiment, the housing 10 and the bottom cover 11 are made of aluminum or aluminum alloy. However, this invention is not limited to this, and the housing 10 and the bottom cover 11 can also be made of other suitable thermally conductive metals.

[0095] like Figures 8 to 14As shown in the illustrated embodiment, the cooling tank 1 includes a first pipe connector 121 and a second pipe connector 122. The first pipe connector 121 is used to connect to the cooling core tube 21 of the charging cable 2, and the second pipe connector 122 is used to connect to the liquid inlet pipe (not shown). Coolant flows into the cooling tank 1 from the liquid inlet pipe and flows out from the cooling core tube 21 of the charging cable 2 to cool the charging terminal 3 and the charging cable 2.

[0096] However, this utility model is not limited to the illustrated embodiment. For example, in another exemplary embodiment of this utility model, the cooling tank 1 includes a first pipe connector 121 and a second pipe connector 122. The first pipe connector 121 is used to connect to the cooling core tube 21 of the charging cable 2, and the second pipe connector 122 is used to connect to the outlet pipe (not shown). Coolant flows from the cooling core tube 21 of the charging cable 2 into the cooling tank 1 and flows out from the outlet pipe to cool the charging terminal 3 and the charging cable 2.

[0097] like Figures 8 to 14 As shown in the illustrated embodiment, the cooling box 1 includes two first pipe joints 121 and one second pipe joint 122, with the second pipe joint 122 located between the two first pipe joints 121.

[0098] like Figures 8 to 14 As shown in the illustrated embodiment, a flow channel 101 is formed in the housing 10 to connect multiple pipe joints 12, allowing the coolant in the housing 10 to flow smoothly between the multiple pipe joints 12 via the flow channel 101. The flow channel 101 is streamlined to ensure that the coolant can flow smoothly along the flow channel 101.

[0099] like Figures 8 to 14 As shown, in another exemplary embodiment of this utility model, an electrical connection module is also disclosed. This electrical connection module includes a cooling box 1 and a charging cable 2. The charging cable 2 includes a cooling core tube 21 and a conductor core 22 for electrical connection with a charging terminal 3. The cooling core tube 21 of the charging cable 2 is connected to a pipe connector 12 of the cooling box 1, allowing coolant to flow through the cooling box 1 and the charging cable 2.

[0100] like Figures 8 to 14 As shown in the illustrated embodiment, the main body of the conductor core 22 of the charging cable 2 is tubular and wrapped around the outside of the cooling core tube 21. The charging cable 2 also includes an outer insulation layer 23 wrapped around the outside of the main body of the conductor core 22.

[0101] like Figures 8 to 14 As shown, in the illustrated embodiment, the conductor core 22 has a connection end 22a exposed from the outer insulation layer 23. The connection end 22a is flat and adapted to be soldered to the solder end 3a of the charging terminal 3. The cooling core tube 21 of the charging cable 2 is exposed from the outer insulation layer 23 and is detachably connected to the first connector 121.

[0102] As Figures 8 to 14 shown in the illustrated embodiment, the cooling core pipe 21 of the charging cable 2 can serve as the liquid outlet pipe. The electrical connection module further includes a liquid inlet pipe (not shown) that is detachably connected to the second pipe joint 122 of the cooling box 1 for supplying the cooling liquid to the cooling box 1 and the cooling core pipe 21 of the charging cable 2.

[0103] However, the utility model is not limited to the illustrated embodiment, for example, the cooling core pipe 21 of the charging cable 2 can also serve as the liquid inlet pipe for supplying the cooling liquid to the cooling box 1. At this time, the electrical connection module further includes a liquid outlet pipe (not shown) that is detachably connected to the second pipe joint 122 of the cooling box 1.

[0104] As Figures 8 to 14 shown in the illustrated embodiment, the electrical connection module further includes a charging terminal 3 that is electrically connected to the conductor core 22 of the charging cable 2. The bottom of the cooling box 1 is in thermal contact with the charging terminal 3 to cool the charging terminal 3.

[0105] As Figures 8 to 14 shown in the illustrated embodiment, the charging terminal 3 has a flat solder end 3a having opposite top and bottom surfaces in the thickness direction thereof. The cooling box 1 has a flat bottom surface that is in thermal contact with the top surface of the solder end 3a of the charging terminal 3.

[0106] As Figures 8 to 14 shown in the illustrated embodiment, the electrical connection module includes two charging cables 2 and two charging terminals 3, the cooling core pipes 21 of the two charging cables 2 are connected to the two pipe joints 12 of the cooling box 1, respectively, and the conductor cores 22 of the two charging cables 2 are electrically connected to the two charging terminals 3, respectively.

[0107] As Figures 8 to 14 shown in the illustrated embodiment, the electrical connection module further includes a fixing device (not shown) for fixing the cooling box 1 to the charging terminal 3 so that the bottom of the cooling box 1 is in reliable thermal contact with the charging terminal 3.

[0108] As Figures 8 to 14 shown in another exemplary embodiment of the utility model, a charging device is also disclosed. The charging device includes a housing (not shown) and the aforementioned electrical connection module. The charging terminal 3 and the cooling box 1 of the electrical connection module are installed in the housing, and the charging cable 2 of the electrical connection module is led out from the rear end of the housing.

[0109] As ​ shown in the illustrated embodiment, the charging device can be a charging base or a charging gun.

[0110] Those skilled in the art can understand that the above-described embodiments are exemplary, and those skilled in the art can make improvements on them, and the structures described in various embodiments can be freely combined without structural or principle conflicts, and these changes shall fall within the protection scope of the present application.

[0111] Although the present application is described in conjunction with the drawings, the embodiments disclosed in the drawings are intended to exemplarily illustrate the preferred embodiments of the present application, and cannot be understood as a limitation of the present application.

[0112] Although some embodiments of the general concept of the present application have been shown and described, those of ordinary skill in the art will understand that changes can be made to these embodiments without departing from the principles and spirit of the general concept of the present application, and the scope of the present application is defined by the claims and their equivalents.

[0113] It should be noted that the word "comprising" does not exclude other elements or steps, and the word "one" or "an" does not exclude a plurality. Additionally, any reference signs in the claims should not be construed as limiting the scope of the present application.

Claims

1. A cooling box, characterized in that, Comprise: a box body (10) having a bottom opening; a bottom cover (11) mounted on the bottom opening of the box body (10); a plurality of pipe joints (12) integrally formed with the box body (10) and communicating with the interior of the box body (10) to allow the cooling liquid to flow into or out of the box body (10) via the pipe joints (12); and a thermally conductive and insulating layer (13) wrapped on the exterior of the box body (10), the exterior of the bottom cover (11) is wrapped by the thermally conductive and insulating layer (13) or a thermally conductive and insulating cap (14) sleeved on the lower part of the box body (10), the bottom of the cooling box (1) is adapted to be in thermal contact with the charging terminal (3), so that the heat of the charging terminal (3) can be transferred into the cooling liquid in the box body (10) via the thermally conductive and insulating layer (13) and the bottom cover (11) to cool the charging terminal (3).

2. The cooling box according to claim 1, characterized in that: the plurality of pipe joints (12) and the box body (10) are an integral pressure casting or an integral machining part.

3. The cooling box of claim 1, wherein: the bottom cover (11) is welded to the box body (10).

4. The cooling box according to claim 1, characterized in that: the exterior of the bottom cover (11) is wrapped by the thermally conductive and insulating layer (13), which is an integral injection molding part injected onto the exterior of the box body (10) and the bottom cover (11).

5. The cooling box according to claim 1, characterized in that: the exterior of the bottom cover (11) is wrapped by a thermally conductive and insulating cap (14) sleeved on the lower part of the box body (10); the peripheral wall (142) of the thermally conductive and insulating cap (14) is sleeved onto the thermally conductive and insulating layer (13) of the lower part of the box body (10) and its bottom wall (141) abuts onto the bottom surface of the bottom cover (11).

6. The cooling box according to claim 5, characterized in that: the peripheral wall (142) of the thermally conductive and insulating cap (14) is interference-fitted with the thermally conductive and insulating layer (13) of the lower part of the box body (10) to retain the thermally conductive and insulating cap (14) onto the lower part of the box body (10).

7. The cooling box of claim 5, wherein: the thermally conductive and insulating cap (14) is an integral injection molding part with elasticity.

8. The cooling box of claim 1, wherein: the box body (10) and the bottom cover (11) are aluminum or aluminum alloy parts.

9. The cooling box according to claim 1, characterized in that: the cooling box (1) comprises a first pipe joint (121) for connecting with the cooling core pipe (21) of the charging cable (2) and a second pipe joint (122) for connecting with a liquid inlet pipe; the cooling liquid flows into the cooling box (1) from the liquid inlet pipe and out of the cooling core pipe (21) of the charging cable (2) to cool the charging terminal (3) and the charging cable (2).

10. The cooling box according to claim 1, characterized in that: The cooling tank (1) includes a first pipe joint (121) for connecting with a cooling core pipe (21) of a charging cable (2) and a second pipe joint (122) for connecting with a liquid outlet pipe. The cooling liquid flows from the cooling core pipe (21) of the charging cable (2) into the cooling tank (1) and flows out from the liquid outlet pipe to cool the charging terminal (3) and the charging cable (2).

11. The cooling tank according to claim 9 or 10, characterized in that: The cooling tank (1) includes two first pipe joints (121) and one second pipe joint (122), and the one second pipe joint (122) is located between the two first pipe joints (121).

12. The cooling tank according to any one of claims 1 to 10, characterized in that: A flow channel (101) connecting the plurality of pipe joints (12) is formed in the tank body (10), and the flow channel (101) is streamlined so that the cooling liquid in the tank body (10) can smoothly flow between the plurality of pipe joints (12) via the flow channel (101).

13. An electrical connection module, characterized by including: The cooling tank (1) according to any one of claims 1 to 12; and The charging cable (2) includes a cooling core pipe (21) and a conductor core (22) for electrically connecting with the charging terminal (3), The cooling core pipe (21) of the charging cable (2) is connected to the pipe joint (12) of the cooling tank (1) so that the cooling liquid can flow through the cooling tank (1) and the charging cable (2).

14. The electrical connection module according to claim 13, characterized in that: The main body of the conductor core (22) of the charging cable (2) is tubular and wrapped outside the cooling core pipe (21), and the charging cable (2) further includes an outer insulation layer (23) wrapped outside the main body of the conductor core (22).

15. The electrical connection module according to claim 14, characterized in that: The conductor core (22) has a connecting end (22a) exposed from the outer insulation layer (23), and the connecting end (22a) is flat and adapted to be welded to a welding end (3a) of the charging terminal (3); The cooling core pipe (21) of the charging cable (2) is exposed from the outer insulation layer (23) and detachably connected to the pipe joint (12).

16. The electrical connection module of any of claims 13-15, wherein, Further including: The charging terminal (3) is electrically connected to the conductor core (22) of the charging cable (2), The bottom of the cooling tank (1) is in thermal contact with the charging terminal (3) to cool the charging terminal (3).

17. The electrical connection module according to claim 16, characterized in that: The charging terminal (3) has a flat welding end (3a) having a top surface and a bottom surface opposite in the thickness direction of the welding end (3a); The cooling tank (1) has a flat bottom surface, and the bottom surface of the cooling tank (1) is in thermal contact with the top surface of the welding end (3a) of the charging terminal (3).

18. The electrical connection module according to claim 16, characterized in that: the electrical connection module comprises two charging cables (2) and two charging terminals (3), the cooling core tubes (21) of the two charging cables (2) are connected to two tube joints (12) of the cooling box (1) respectively, the conductor cores (22) of the two charging cables (2) are electrically connected to the two charging terminals (3) respectively.

19. The electrical connection module of claim 16, wherein, Further comprising: a fixing device for fixing the cooling box (1) to the charging terminal (3), so that the bottom of the cooling box (1) is in reliable thermal contact with the charging terminal (3).

20. A charging device, characterized by Comprising: a housing; and the electrical connection module according to any one of claims 13-19, the charging terminal (3) and the cooling box (1) of the electrical connection module are installed in the housing, and the charging cable (2) of the electrical connection module is led out from the rear end of the housing.

21. The charging device of claim 20, wherein: the charging device is a charging seat or a charging gun.

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