CN217468057U

CN217468057U - Cable and charging device

Info

Publication number: CN217468057U
Application number: CN202122310037.2U
Authority: CN
Inventors: 邵贤典
Original assignee: Phoenix Nanjing New Energy Automotive Technology Co ltd
Current assignee: Phoenix Nanjing New Energy Automotive Technology Co ltd
Priority date: 2021-09-23
Filing date: 2021-09-23
Publication date: 2022-09-20
Anticipated expiration: 2031-09-23

Abstract

The present disclosure provides a cable, which includes an outer sheath, wherein the outer sheath is provided with: at least one wire for transmitting electrical power or signals, at least one cooling tube configured for transmitting heat, and a thermally conductive filler. The heat conductive filler is filled at least between the at least one wire and the at least one cooling tube for conducting heat generated by the at least one wire to the at least one cooling tube. The cable provided by the disclosure can improve the heat conduction efficiency in the cable and effectively reduce the temperature of the cable, thereby prolonging the service life and the through-current capacity of the cable.

Description

Cable and charging device

Technical Field

The utility model relates to an electric motor car technical field that charges especially relates to a charging cable for electric motor car charges.

Background

In recent years, in the automobile industry, new energy electric automobiles are developed vigorously due to the advantages of less environmental pollution, low noise and the like. Compared with the traditional fuel oil automobile quick refueling mode, the charging of the electric automobile needs to consume a longer time. How to charge the new energy electric automobile quickly becomes a great focus influencing the development of the new energy electric automobile. In order to realize rapid charging of electric vehicles, a high-power charging mode gradually appears in the industry. However, the high power charging mode may cause serious heating and even burning of the charging cable. Furthermore, an excessive temperature of the charging cable also affects the current capacity of the charging cable. In order to solve the problem of heat generation of the high-power charging cable, it is proposed to introduce a cooling pipe into the charging cable, and to use a coolant in the cooling pipe to absorb heat generated in the charging cable, so as to reduce the temperature of the charging cable. In the existing solutions using cooling pipes, in order to increase the heat absorption efficiency of the cooling pipes, it is common to dispose the heat-generating wires inside the corresponding cooling pipes or dispose the cooling pipes inside the heat-generating wires. However, both of these solutions require matching designs of the shape and size of the wires and cooling tubes, which increases the complexity and cost of manufacturing the charging cable. Furthermore, when the number of wires in the charging cable is large, the nested structure between each wire and the corresponding cooling tube will result in a large total volume of the charging cable, which may impose additional design requirements on the charging gun to which the charging cable is applied.

Therefore, it is desirable to provide a new solution to the problem of heat generation of the charging cable.

SUMMERY OF THE UTILITY MODEL

The utility model provides a technical scheme aims at solving the problem of generating heat of charging cable among the prior art.

In an aspect of the present invention, there is provided a cable, the cable includes an outer sheath, the outer sheath is provided with: at least one wire for transmitting electrical power or electrical signals; at least one cooling tube configured to transfer heat; and a thermally conductive filler filled at least between the at least one wire and the at least one cooling tube for conducting heat generated by the at least one wire to the at least one cooling tube.

In at least one embodiment of an aspect of the present invention, the thermally conductive filler is filled between the at least one wire and a cooling tube adjacent to the at least one wire among the at least one cooling tube.

In at least one embodiment of an aspect of the present invention, the thermally conductive filler is filled in contact with at least a portion of an outer surface of the at least one wire and at least a portion of an outer surface of the adjacent cooling tube.

In at least one embodiment of an aspect of the present invention, a portion of an outer surface of the at least one wire is in contact with a portion of an outer surface of the adjacent cooling tube.

In at least one embodiment of one aspect of the present invention, the at least one cooling tube includes at least one inlet tube and at least one outlet tube.

In at least one embodiment of an aspect of the present invention, the thermally conductive filler is filled between the at least one conductive wire and the at least one inlet pipe, and/or between the at least one conductive wire and the at least one outlet pipe.

In at least one embodiment of an aspect of the present invention, the cooling pipe has a coolant therein, and the coolant includes a liquid coolant or a gaseous coolant.

In at least one embodiment of one aspect of the present invention, the at least one wire comprises a conductor and an insulating layer, wherein the insulating layer is wrapped outside the conductor.

In at least one embodiment of an aspect of the present invention, the thermally conductive filler is further filled in at least a part of the space between the at least one wire and the inner wall of the outer sheath (11).

In at least one embodiment of an aspect of the present invention, the thermally conductive filler includes carbon fibers and has at least one shape selected from the group consisting of: belt, rope, granule, and powder.

In another aspect of the present invention, a charging device is provided, which includes: a cable as described above; and a charging gun having an electrical terminal for electrical connection with the conductor of the electrical cable at one end and for electrical connection with a device to be charged at the other end, and a cooling chamber configured for fluid communication with the outlet of the at least one inlet duct and the inlet of the at least one outlet duct.

In at least one embodiment of another aspect of the present invention, the charging device further includes: a coolant reservoir tank for fluid communication with an inlet of the at least one inlet pipe; and a coolant collection tank for fluid communication with an outlet of the at least one exhaust pipe.

In at least one embodiment of another aspect of the present invention, the charging device further includes: a pumping apparatus disposed between the coolant storage tank and the inlet of the at least one inlet tube.

Compared with the prior art, the utility model discloses can have following one or more advantages:

(1) the temperature of the charging cable is effectively reduced by improving the heat conduction efficiency in the charging cable, so that the service life and the through-current capacity of the charging cable are improved;

(2) the cooling pipe is arranged in the charging cable and is adjacent to the conducting wire, and the high-heat-conduction material is filled between the cooling pipe and the conducting wire, so that the heat generated by the conducting wire is quickly conducted, and the method is simple, effective and convenient to operate; and

(3) the high heat conduction material is filled in a gap formed between the outer surface of the cooling pipe and the outer surface of the lead, the size of the charging cable is approximately unchanged, and a charging gun does not need to be additionally designed.

Drawings

To further clarify the above and other advantages and features of various embodiments of the present invention, a more particular description of various embodiments of the invention will be rendered by reference to the appended drawings. It is appreciated that these drawings depict only typical embodiments of the invention and are therefore not to be considered limiting of its scope.

Fig. 1 shows a schematic cross-sectional view of a charging cable according to an embodiment of the invention; and

fig. 2 shows a schematic structural diagram of a charging device according to an embodiment of the present invention.

Reference numerals:

1 charging device

10 charging cable

11 outer sheath

20 conducting wire

31 coolant storage tank

32 entry tube

32a inlet of the inlet pipe

32b outlet of the inlet pipe

33 coolant collection tank

34 discharge pipe

34a inlet of discharge pipe

34b outlet of discharge pipe

40 carbon fiber filler

50 charging gun

52 Cooling chamber

52a cooling chamber inlet

52b outlet of the cooling chamber

Detailed Description

The present invention will be further described with reference to the following embodiments and drawings, and more details will be set forth in the following description in order to provide a thorough understanding of the present invention, but it is obvious that the present invention can be implemented in various other ways different from those described herein, and those skilled in the art can similarly popularize and deduce the present invention according to the actual application without departing from the spirit of the present invention, and therefore, the scope of the present invention should not be limited by the contents of the embodiments.

This application uses specific words to describe embodiments of the application. Reference to "one embodiment," "another embodiment," and/or "some embodiments" means that a particular feature, structure, or characteristic described in connection with at least one embodiment of the application. Therefore, it is emphasized and should be appreciated that two or more references to "one embodiment" or "another embodiment" or "some embodiments" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, certain features, structures, or characteristics may be combined as suitable in one or more embodiments of the application.

It should be noted that in the following description of embodiments of the present application, various features are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure aiding in the understanding of one or more of the embodiments. This method of disclosure, however, is not intended to require more features than are expressly recited in the claims. Indeed, the embodiments may be characterized as having less than all of the features of a single embodiment disclosed hereinafter.

It should also be noted that methods, components, etc. that are well known in the art have not been described in detail in this disclosure in order to not unnecessarily obscure aspects of the embodiments of the present invention.

Referring to fig. 1, fig. 1 shows a schematic cross-sectional view of a charging cable 10 according to an embodiment of the invention. As shown in fig. 1, the charging cable 10 may include an outer sheath 11, and a conductive wire 20 for transmitting power or an electrical signal, an inlet pipe 32 (may also be referred to as a first cooling pipe), an outlet pipe 34 (may also be referred to as a second cooling pipe), and a carbon fiber filler 40 are provided inside the outer sheath 11.

The outer sheath 11 may be made of an insulating material, which may be, for example, cross-linked polyethylene (XLPE), polyvinyl chloride (PVC), cross-linked polyolefin (XLPO), thermoplastic styrene elastomer (TPE-S), polyester thermoplastic elastomer (TPE-E), polyphenylene ether (PPE), polypropylene (PP), or the like.

The wire 20 may include a conductor and an insulating layer (not shown in fig. 1) that may be wrapped around the conductor to provide insulation and protection. Depending on the role of the conductor 20 in the charging cable 10, the conductor may be used to transmit electrical power or electrical signals. For example, a conductor with a larger wire diameter is used to transmit power, and a conductor with a smaller wire diameter is used to transmit electrical signals. The conductor of the wire 20 may be composed of a metal material, which may include copper, a copper alloy, an aluminum alloy, and the like. The insulation layer of the wire 20 may be formed of an insulation material, which may include materials such as cross-linked polyethylene (XLPE), polyvinyl chloride (PVC), cross-linked polyolefin (XLPO), thermoplastic styrene elastomer (TPE-S), polyester thermoplastic elastomer (TPE-E), polyphenylene ether (PPE), polypropylene (PP), and the like.

One application example of the charging cable 10 is illustrated below in conjunction with fig. 2 and the connection of the cooling pipe in the charging cable 10 is described in detail. Fig. 2 shows a schematic view of a charging device 1 according to an embodiment of the invention. The charging device 1 comprises a charging cable 10 and a charging gun 50, the charging cable 10 can be connected between a power source (not shown) and the charging gun 50, the charging gun 50 can further form an electrical connection with a device to be charged (not shown) in a plug-in manner, and the device to be charged can be an electric vehicle powered by a battery. The charging gun 50 may include an electrical terminal (not shown) that may be electrically connected at one end to the conductor 20 in the charging cable 10 and at the other end to the device to be charged. The charging gun 50 may further include a cooling cavity 52, the cooling cavity 52 may have an inlet 52a and an outlet 52b, the inlet 52a of the cooling cavity 52 may be in fluid communication with the outlet 32b of the inlet duct 32 of the charging cable 10, and the outlet 52b of the cooling cavity 52 may be in fluid communication with the inlet 34a of the outlet duct 34 of the charging cable 10. Further, the charging device 1 may further include a coolant storage tank 31 and a coolant collection tank 33. In one embodiment, the coolant storage tank 31 and the coolant collection tank 33 may be separately provided tanks. In another embodiment, the coolant storage tank 31 and the coolant collection tank 33 may be the same tank, in which a radiator (not shown) may be further provided for radiating heat from the coolant. The coolant may be a liquid coolant, which may include a mixture of water and glycol, or a cooling oil, or a gaseous coolant, which may include refrigerated air, or the like. The charging device 1 may further comprise a pumping device (not shown) which may be arranged between the coolant reservoir tank 31 and the inlet 32a of the inlet pipe 32 of the charging cable 10 for pumping coolant from the coolant reservoir tank 31 to the inlet pipe 32 of the charging cable 1. The pumping device may be a water pump, a blower, or other suitable device that may pump coolant to the inlet pipe 32.

Referring to fig. 2, the inlet tube 32 of the charging cable 10 may be a hollow structure and have an inlet 32a and an outlet 32 b. The inlet 32a of the inlet pipe 32 may be in fluid communication with the coolant reservoir tank 31 and the outlet 32b may be in fluid communication with the inlet 52a of the cooling cavity 52 within the charging gun 50, wherein coolant from the coolant reservoir tank 31 may flow into the inlet pipe 32 through the inlet 32a of the inlet pipe 32 and out of the inlet pipe 32 through the outlet 32b of the inlet pipe 32 and into the cooling cavity 52 within the charging gun 50. The discharge tube 34 may be a hollow structure and have an inlet 34a and an outlet 34 b. The inlet 34a of the discharge tube 34 may be in fluid communication with the outlet 52b of the cooling chamber 52 within the charging gun 50, and the outlet 34b of the discharge tube 34 may be in fluid communication with the coolant collection tank 33, wherein coolant flowing into the cooling chamber 52 of the charging gun 50 from the outlet 32b of the inlet tube 32 may flow from the outlet 52b of the cooling chamber 52, into the discharge tube 34 through the inlet 34a of the discharge tube 34, and out of the discharge tube 34 from the outlet 34b of the discharge tube 34 into the coolant collection tank 33.

See back fig. 1. In the illustrated embodiment, within the outer sheath 11 of the charging cable 10, five wires 20, one inlet tube 32 and two outlet tubes 34 are provided, each wire 20 being adjacent to and in contact with the inlet tube 32, and portions of the wires 20 also being in contact with the adjacent outlet tubes 34. Between the wire 20 and the adjacent inlet tube 32/outlet tube 34, only a portion of the outer surface is in contact and the non-contacting outer surface forms voids therebetween, and carbon fiber filler 40 may be filled in these voids and in contact with the outer surface of the wire 20, inlet tube 32, and/or outlet tube 34 for conducting heat generated by the wire 20 to the inlet tube 32 and/or outlet tube 34. In other embodiments, the outer surface of the wire 20 may be completely free of contact with the outer surface of the inlet tube 32 and/or the outlet tube 34, and carbon fiber filler 40 may be filled between the wires 20, the inlet tube 32, and/or the outlet tube 34 adjacent to each other. Carbon fiber filler 40 may be filled between the wire 20 and the inlet tube 32 and/or between the wire 20 and the outlet tube 34 to conduct heat between the wire 20 and the inlet tube 32 and/or between the wire 20 and the outlet tube 34, whether or not the outer surfaces of the wire 20, inlet tube 32, and/or outlet tube 34 adjacent to one another are in contact. In the process of transmitting power using the charging cable 10, the temperature of the wire 20 may be greater than the temperature of the inlet tube 32 and the outlet tube 34, and heat generated by the wire 20 may be conducted to the inlet tube 32 and/or the outlet tube 34 via the carbon fiber filler 40. The present disclosure utilizes the high thermal conductivity of the carbon fiber filler 40 to improve the efficiency of heat conduction from the lead wires 20 to the inlet tube 32 and/or the outlet tube 34, facilitating the absorption of heat by the inlet tube 32 and/or the outlet tube 34, thereby effectively reducing the temperature within the charging cable 10. In other embodiments, a filler composed of other suitable thermally conductive materials may also be used in place of or in addition to carbon fiber filler 40 between wire 20 and inlet tube 32 and/or between wire 20 and outlet tube 34, so long as the thermally conductive material can promote the efficiency of heat transfer between wire 20 and inlet and

outlet tubes

32 and 34. In addition to having high thermal conductivity characteristics, carbon fiber materials have high flexibility and, when filled into a space defined by a plurality of objects (e.g., the wires 20, the inlet tube 32, the outlet tube 34, the outer sheath 11, etc., as described herein), carbon fiber materials can cooperate well with the filled space to effectively conduct heat between the objects. Furthermore, it can be seen that, since the carbon fiber filler 40 is filled in the gap between the outer surface of the lead wire 20, the outer surface of the inlet pipe 32 and the outer surface of the outlet pipe 34, the carbon fiber filler 10 is filled in the charging cable 10 without increasing the size of the charging cable 10, and thus the utility model discloses a scene in which the charging cable 10 can be applied is not limited, and does not provide additional design requirements for the charging gun 50. In some embodiments, the carbon fiber material may also be filled in other voids within the outer sheath 11, such as the void between the wire 20 and the inner wall of the outer sheath 11. The shape of the carbon fiber filler may include: strip, rope, granule, powder.

In the embodiment shown in fig. 1, five wires 20, one inlet tube 32 and two outlet tubes 34 are provided in the charging cable 10, and in the embodiment shown in fig. 2, one wire 20, one inlet tube 32 and one outlet tube 34 are provided in the charging cable 10. However, the number of wires 20, the number of inlet tubes 32, and the number of outlet tubes 34 are not limited thereto, and in some other embodiments, one skilled in the art can set the number of wires 20, the number of inlet tubes 32, and the number of outlet tubes 34 as desired. In other embodiments, the number of the cooling pipes may be set to only one, and the cooling pipe may have an opening at one end through which a coolant may enter the cooling pipe to absorb heat generated from the conductive wire 20 of the charging cable 1 during the transmission of electric power.

In the embodiment shown in fig. 1, the cross-section of the charging cable 10, the cross-section of the conductive wire 20, the cross-section of the inlet pipe 32, and the cross-section of the outlet pipe 34 are all shown as being circular, however, the present invention is not limited thereto, and in other embodiments, the cross-section of the charging cable 1, the cross-section of the conductive wire 20, the cross-section of the inlet pipe 32, and the cross-section of the outlet pipe 34 may be configured in other shapes as desired.

Furthermore, the positional arrangement of the conductor 20, the inlet tube 32, the outlet tube 34, and the carbon fiber filler 40 within the charging cable 10 shown in fig. 1 is merely exemplary and does not constitute a limitation of the present invention. In other embodiments, the lead 20 may be disposed within the inlet tube 32 and/or the outlet tube 34, and the carbon fiber filler 40 may be filled between the inner surface of the inlet tube 32 and/or the outlet tube 34 and the outer surface of the lead 20. In other embodiments, the lead 20 is configured to have an inlet tube 32 and/or an outlet tube 34 disposed therein, and a carbon fiber filler 40 may be filled between the outer surface of the inlet tube 32 and/or the outlet tube 34 and the inner surface of the lead 20.

Additionally, although the present invention is described above in the context of a charging cable 10, the present invention is not so limited and those skilled in the art may practice the present invention in other cables that require heat dissipation.

While the present invention has been described in accordance with the preferred embodiments of the present disclosure, it is not intended to be limited thereto, but rather only by the scope set forth in the following claims. It will be appreciated by persons skilled in the art that various modifications and changes may be made to the embodiments described herein without departing from the broader spirit and scope of the invention as set forth in the appended claims.

Claims

1. A cable, comprising an outer jacket, wherein:

at least one wire for transmitting electrical power or electrical signals;

at least one cooling tube configured to transfer heat; and

a thermally conductive filler filled at least between the at least one wire and the at least one cooling tube for conducting heat generated by the at least one wire to the at least one cooling tube.

2. The cable of claim 1,

the thermally conductive filler is filled between the at least one conductive wire and a cooling tube adjacent to the at least one conductive wire among the at least one cooling tube.

3. The cable of claim 2, wherein the thermally conductive filler is filled in contact with at least a portion of an outer surface of the at least one conductor and at least a portion of an outer surface of the adjacent cooling tube.

4. The cable of claim 3, wherein a portion of the outer surface of the at least one conductor is in contact with a portion of the outer surface of the adjacent cooling tube.

5. The cable of any one of claims 1-4, wherein the at least one cooling tube comprises at least one entry tube, and at least one exit tube.

6. The cable according to claim 5, wherein the thermally conductive filler is filled between the at least one conductor and the at least one inlet tube and/or between the at least one conductor and the at least one outlet tube.

7. The cable of any one of claims 1-4, wherein the at least one conductor comprises a conductor and an insulating layer, wherein the insulating layer is wrapped around the conductor.

8. The cable of any one of claims 1-4, wherein the thermally conductive filler is further filled within at least a portion of a void between the at least one conductive wire and an inner wall of the outer jacket.

9. The cable of any one of claims 1-4, wherein the thermally conductive filler is a carbon fiber filler.

10. A charging device, characterized in that the charging device comprises:

the cable of claim 5 or 6; and

a charging gun having an electrical terminal for electrical connection with the conductor of the electrical cable at one end and for electrical connection with a device to be charged at the other end, and a cooling cavity configured for fluid communication with an outlet of the at least one inlet duct and an inlet of the at least one outlet duct.

11. A charging device as in claim 10, further comprising:

a coolant reservoir tank for fluid communication with an inlet of the at least one inlet pipe; and

a coolant collection tank for fluid communication with an outlet of the at least one exhaust pipe.

12. A charging arrangement as claimed in claim 11, further comprising:

a pumping apparatus disposed between the coolant storage tank and the inlet of the at least one inlet tube.