Electric vehicle charging connector and heat pipe

Abstract

The present invention relates to a heat pipe (106) configured to be attached to a heat source inside an electric vehicle charging connector (100) for a vehicle (800). The heat pipe (106) comprises a metal heat receiving portion (107), a heat guiding portion, and a heat dissipating portion (109). The heat pipe further comprises an insulating sleeve (121) surrounding the heat receiving portion (107), the insulating sleeve (121) being configured to electrically insulate the metal heat receiving portion from the heat source.

Description

Technical Field

[0001] This invention relates to an electric vehicle charging connector, a charging station, a heat pipe, and the use of the heat pipe in the electric vehicle charging connector. Background Technology

[0002] One limiting factor in electric vehicle charging cables is the heat generated when high current flows from the charging station through the cable and electrical connectors to the vehicle's battery. This heat can be actively conducted away from the heat source using a liquid. This allows for current rates exceeding 500A. For this cooling arrangement, a liquid needs to be included, and the liquid needs to be transferred from the radiator to the heat source and back to the liquid. Additional equipment such as pumps is required. Alternatively, passive cooling is possible. However, with existing designs, only a rated current of up to 200A can be achieved. Passive cooling requires a design with a hollow section within the enclosure or materials used for the enclosure that do not insulate the heat within it. This design may be ineffective or result in excessive weight for the charging cable. Summary of the Invention

[0003] Traditional solutions such as active cooling using liquids are expensive and involve potentially environmentally unfriendly coolants. Other systems may be ineffective or associated with unfavorable design characteristics. Therefore, an improved battery charging connector that can operate at low cost and is easy to maintain may be desirable.

[0004] This problem is addressed by the subject matter of the independent claims. Examples are provided by the dependent claims, the following description, and the accompanying drawings.

[0005] The described embodiments also relate to electric vehicle charging connectors, charging stations, heat pipes, and the use of heat pipes in electric vehicle charging connectors. Although different combinations of embodiments may not have been described in detail, different combinations of embodiments may produce synergistic effects.

[0006] Technical terms are used according to their common sense. If certain terms are to convey a specific meaning, then the definition of the term is given below in the context in which they are used.

[0007] According to a first aspect, a heat pipe is provided, configured to be attached to a heat source inside an electric vehicle charging connector. The heat pipe includes a metallic heat receiving portion, a metallic heat conducting portion, and a heat dissipation portion. The heat pipe also includes an insulating sleeve surrounding at least the heat receiving portion, the insulating sleeve being configured to be electrically insulated from a cable at the metallic heat receiving portion.

[0008] An insulating sleeve separates the metallic heat-receiving portion of the heat pipe from the metal components, such as copper power contacts or cables at the power contacts. The insulating sleeve ensures electrical protection with only a slight decrease in thermal performance. For example, the thermal contact interface between the metal and the insulating material can be improved using thermal grease. The insulating material can be ceramic or plastic. The minimum components to be insulated are those that may be directly connected to the power contacts or voltage-carrying cables. However, the sleeve may also surround the entire heat pipe.

[0009] According to one embodiment, the heat pipe is configured to be connected to an electrical ground relative to the cable. The heat pipe can be connected to the cable's electrical ground at any point in its components. This ensures the heat pipe's grounding in the event of severe mechanical damage, which could also damage the ceramic sheath. Additionally, this measure allows the charger's protection system to detect such a breach of electrical grounding and disconnect the faulty connector.

[0010] According to one embodiment, the heat dissipation section includes a tube and fins, the tube providing a heat conduction section, wherein the fins are mounted on the tube, and wherein the fins are made of an electrically insulating material. In this case, the fins are mounted individually, for example, equidistantly on the tube. The insulating material can be pure plastic or ceramic. Pure plastic materials have a conductivity of approximately 0.1 W / mK, which may require a very large heat transfer area. More preferably, a material with a conductivity on the order of, for example, 1 W / mK can be selected. This conductivity can be achieved, for example, by commercially available so-called "high conductivity plastics" or by ceramic materials that can provide a higher conductivity on the order of 10 W / mK. With such materials, small fins and volume savings can be achieved, assuming improved mechanical design and robustness.

[0011] According to one embodiment, the heat dissipation section includes tubes and fins, wherein the tubes and fins provide a metallic heat conduction section, and wherein the tubes and fins are coated with an electrically insulating layer. The electrically insulating layer may, for example, be composed of plastic or ceramic. From a manufacturing perspective, the heat pipe with the condenser is first assembled, and then, in another step, the insulating layer is applied, for example, by coating.

[0012] According to one embodiment, the heat dissipation section includes tubes and fins, wherein the tubes and fins provide a heat conduction section, and wherein the tubes and fins are fitted with sleeves that form an electrically insulating layer. The sleeve can be a compact component or consist of separate components for each fin in the fins. In the latter case, the individual fin elements, already fitted with sleeves, are stacked one after another. In both cases, the fins are fitted with sleeves, for example, using a shrink tube technique, before the heat pipe is assembled with the condenser. The insulating fins are then connected to the heat pipe.

[0013] According to one embodiment, the heat dissipation section includes a tube and fins, the tube providing a heat conduction section. The fins are integral fins made of insulating material, and the tube is fitted with the integral fins. For example, the integral finned sleeve can be slid onto the metal tube before assembling the tube and heat pipe.

[0014] According to one embodiment, heat dissipation in the surface area of ​​the heat-dissipating portion is sprayed. By spraying the heat-dissipating area, such as a heat sink, with black, for example, it is possible to reduce thermal resistance and improve heat dissipation.

[0015] In one embodiment, the heat source is the power contact or the cable at the power contact. The power contact is the actual heat source. However, because of the low thermal resistance between the cable and the power contact, connecting the evaporator to the cable at or near the power contact may produce almost the same effect. Both the cable and the power contact are metallic to ensure that the insulation prevents the heat pipe from carrying voltage.

[0016] According to one aspect, an electric vehicle charging connector is provided, including an outer housing, an inner housing, and a heat pipe. The outer housing is configured to receive a cable in a rear-end region of the electric vehicle charging connector and to enclose the inner housing in a front-end region of the electric vehicle charging connector. The inner housing is disposed in the front-end region of the electric vehicle charging connector and configured to receive the cable from the outer housing and guide the cable to power contacts of the electric vehicle charging connector. The electric vehicle charging connector also includes a heat pipe as described herein, which is attached to a heat source in the inner housing and configured to conduct heat from the heat source in the inner housing to free space in the outer housing. The heat pipe includes an insulating sleeve, wherein only the insulating sleeve of the heat pipe contacts the heat source.

[0017] According to one embodiment, the battery of the charging connector includes a cable, wherein the cable includes an arrangement configured to receive a grounding cable from a metal portion of the heat pipe, such that the heat pipe is electrically connected to ground with respect to the voltage of the cable.

[0018] The heat pipe can be connected to the cable's ground at any of its metal components. This ensures the heat pipe, or at least partially, is grounded in case of high mechanical damage that could also jeopardize the ceramic sheath. Additionally, the charger's protection system can detect such a breach of grounding and disconnect the faulty connector.

[0019] According to one embodiment, the outer casing in the area of ​​the condenser is equipped with perforations or slits, the number and size of which are designed to provide overall protection for the user's thermal protection, mechanical protection of the fins, electrical insulation from the user in the event of damage to the insulating sleeve, and protection against fouling, based on the heat dissipation characteristics and insulation characteristics of the heat dissipation section.

[0020] Various examples of heat dissipation section designs have been discussed above, and these examples are illustrated in the figures. The examples show designs that provide different heat dissipation and insulation characteristics for the heat dissipation section, for example, using insulating material for the fins or fin-covering sleeves and the tubes to which the fins are fixed. For example, if the fins have a robust design and good insulation protection is already provided due to the relatively thick sleeve covering the fins and tubes, the openings or slits of the perforations may be large to ensure sufficient airflow, thus balancing the poorer heat dissipation characteristics compared to a thin insulation layer. Regarding the dimensional design of the size and number of slits, other aspects such as the mechanical stability of the fins and ultimately environmental aspects such as dirt and humidity must be considered. For example, if the mechanical stability is low, higher external damage protection may be required, necessitating a smaller opening design and a generally more robust outer casing.

[0021] According to one embodiment, the inner enclosure is completely sealed and is designed, for example, to provide a high degree of protection against mechanical damage, water damage, dust damage, or other damage, and includes sealed passages such that the heat receiving portion of the heat pipe is arranged within the sealed inner enclosure, while the heat dissipation portion is located outside the sealed inner enclosure and inside the outer enclosure.

[0022] According to another aspect, a charging station is provided, including an electric vehicle charging connector as described in this disclosure.

[0023] According to another aspect, the use of heat pipes, such as those presented in this disclosure, in electric vehicle charging connectors as described herein is provided.

[0024] Therefore, the present invention provides a charging connector or charging plug wherein electrical insulation is ensured by at least one measure using an insulating (e.g., ceramic) sheath at the heat-receiving portion of the heat pipe. In principle, the heat pipe is completely isolated from the cable voltage. The proposed design elements ensure that the condenser components of the heat pipe system achieve the necessary protection for the user from electrical and thermal hazards, while ensuring the required thermal performance.

[0025] These and other features, aspects, and advantages of the invention will be better understood with reference to the accompanying drawings and the following description. Identical or equivalent elements generally have the same reference numerals. Attached Figure Description

[0026] Figure 1 A diagram of an electric vehicle charging connector on which an embodiment may be based is shown.

[0027] Figure 2a The embodiments shown may be based on additionally having heat pipes. Figure 1 A diagram of an electric vehicle charging connector.

[0028] Figure 2b It shows Figure 2a Thermal network diagram of electric vehicle charging connector.

[0029] Figure 3a A diagram of a dual heat pipe system with two heat pipes connected in parallel with the condenser fins is shown.

[0030] Figure 3b It shows the span Figure 2a A diagram of the grid pattern of the openings of an electric vehicle charging connector.

[0031] Figure 4 A diagram of an electric vehicle charging connector with an insulated heat pipe according to one embodiment is shown.

[0032] Figure 5 A diagram of an insulated heat pipe fin according to one embodiment is shown.

[0033] Figure 6 A diagram showing an example of a casing opening design for an insulated heat pipe fin according to one embodiment is illustrated.

[0034] Figure 7 A graph showing the temperature drop across solid insulation relative to the insulation layer thickness is shown.

[0035] Figure 8 A schematic diagram of a charging station connected to a vehicle is shown. Detailed Implementation

[0036] Figure 1A diagram illustrates an electric vehicle charging connector design upon which embodiments may be based. This electric vehicle charging connector 100 generally includes an outer housing or outer enclosure 104, an inner housing or inner enclosure 103, and a cable 101 for conducting charging current from a charging station to a battery charging socket. The outer enclosure 104 is configured to receive the cable 101 in a rear end region 111 of the electric vehicle charging connector 100 and enclose the inner enclosure 103 in a front end region 113 of the electric vehicle charging connector. The inner enclosure 103 is disposed in the front end region 113 of the electric vehicle charging connector 100 and is configured to receive the cable 101 from the outer enclosure 104 and guide the cable to the power contacts of the electric vehicle charging connector 100. The cable 101 links to a connector 102 inside the inner enclosure 103. The function of the inner enclosure 103 is to ensure electrical insulation, ensure mechanical strength, and prevent water and dirt contamination. For this purpose, the inner enclosure 103 is largely sealed, and in some designs, it also includes a nearly completely potted structure. The structure is also enclosed within an outer housing 104. This structure is intended to provide a handle and other functions for user interaction. One reason for separating housings 103 and 104 is weight. The stringent functional requirements of the inner housing 103 result in a rather robust and heavy design, which may also be "sealed for life." On the other hand, the larger outer housing 104 is constructed in a relatively lightweight manner, with an emphasis on weight reduction and comfort.

[0037] Figure 2a An embodiment is shown that may additionally have a heat pipe 106. Figure 1 The diagram shows the electric vehicle charging connector 100. Figure 2a The electric vehicle charging connector 100 in the middle has a connection with Figure 1 The design is basically the same as that of the electric vehicle charging connector 100; however, the heat pipe 106 is shown as a heat conductor arranged inside the housing 104 and partially inside the housing 103. Heat receiving component (that is, Figure 2a The evaporator 107 of the heat pipe is attached in close thermal contact with a heat source or hot spot in compartment 102 (specifically, close to or connected to the power contacts of the connector). The heat pipe then extracts heat from an inner enclosure 103, which is highly sealed against electricity, water, and dust and provides mechanical protection for the contacts and related components. The heat is then transported from the evaporator via a sealing point 110 to a condenser 109 with condenser fins 108. The heat pipe 106 dissipates heat to the environment in area 109, which is enclosed by an outer enclosure 104 that requires less protection and primarily serves as the user interface. Heat is dissipated to the environment from the condenser portion 109 of the heat pipe 106. In the case of an AC charger, one or more heat pipes may be present per phase.

[0038] Figure 2b The corresponding thermal network diagram is shown. The heat pipe 106 in the inner enclosure 103 is represented by R9, while in the outer enclosure it is represented by the thermal resistance R10 corresponding to the pipe in the outer enclosure 104 and R11 corresponding to the fin 108.

[0039] Heat absorbed by the evaporator end 107, R9 of heat pipe 106 is guided by heat pipe 106 to condenser regions 106, R10, R11. R9 is relatively low due to design considerations. To reduce R11, the condenser portion 109 of heat pipe 106 is well exposed to ambient air. In the proposed design, an outer casing 104 can provide air passages or openings in region 109 that expose the heat pipe condenser end 109 to ambient air. For example, these passages can consist of hollow openings that may have caps on the sides of the outer casing 104 to protect the user from contact with the heat pipe 106. Figure 3b An illustration of such a cover with grid 302 is shown, in which the heat pipe condenser 109 is exposed to the environment, and the heat pipe condenser 109 is placed on a suitable surface of the outer cover 104, so that the fins 108 are exposed and may be covered only by the protective grid 302.

[0040] Figure 3a A dual heat pipe 106 with two heat pipes is shown, the two heat pipes being juxtaposed with condenser fins 108 attached to the pipes. The condenser fins 108 improve heat dissipation due to the enhanced surface at the heat pipe condenser ends, thus reducing the thermal resistance R11. The fins shown can be adapted to the available space in the external enclosure 104.

[0041] Figure 4 A diagram of an electric vehicle charging connector with an insulated heat pipe 106 is shown. Figure 4 The reference numerals in the figures correspond to those in the previous figures. Cable 101 includes copper conductors for power contacts, grounding, and signal contacts. Connector 100 also includes a compartment or retainer 102 for power contacts 102 and a housing 104. As a first measure for electrical protection of the heat pipe 106, insulation is achieved using, for example, a ceramic sleeve 121 that separates the copper heat pipe 106 from the copper power connector in the compartment 102.

[0042] The heat pipe evaporator 107 is preferably embedded directly into the hot spot area (i.e., the contact area). The inner diameter of the sleeve is, for example, 4 mm, which is equal to the diameter of the heat pipe, while the outer diameter is, for example, 5 mm. Thermal paste can improve the thermal contact interface, but in general, the ceramic sleeve only provides a slight degradation to thermal performance and forms one of the electrical insulation protection measures. In principle, the heat pipe 106 is completely isolated from the cable voltage. As another electrical protection measure, the heat pipe 106 can also be grounded as shown by dashed line 112. Any part of the heat pipe can be connected to the cable ground. This ensures that the component is grounded in case of severe mechanical damage that could endanger the ceramic sleeve 121, and additionally, the charger's protection system can detect such a breach of grounding and disconnect the faulty connector.

[0043] Inside the highly protective inner enclosure 103, the heat pipe 106 is bent at 90° and exits from the inner enclosure 103 through a point or sealing point 110. It should be noted that the inner enclosure is designed to be completely sealed up to point 110, with very high protection against mechanical damage, water damage, dust damage, or other types of damage.

[0044] To meet higher protection requirements, the following additional measures can be taken. Specifically, in addition to ceramic bushing insulation, it is proposed to use a condenser that is electrically insulated itself.

[0045] Figure 5 The schematic diagram only shows the heat pipe in the area of ​​the outer casing 104. Figure 4 Components outside of midpoint 110. Metal components are drawn as solid black areas, while insulating components are white areas surrounded by lines.

[0046] Design 520 shows a heat pipe 106 that can be exposed without protection, but the fins 108 themselves are made of an electrically insulating material. As will be shown later, a pure plastic material with a conductivity on the order of 0.1 W / mK might require a very large heat transfer area and could lead to complications, but a material with a conductivity on the order of 1 W / mK might offer a reasonable option. This can be achieved with commercially available "high conductivity plastics" or even ceramic materials that offer even higher conductivity on the order of 10 W / mK, in which case small fins and volume savings can be achieved, assuming mechanical design and robustness are provided.

[0047] Design 530 offers another option that could result in high thermal performance. In this design, the condenser is made of metal fins, as in the previous design, but the fins are additionally coated with an electrically insulating layer, which can be plastic or ceramic. As will be shown later, even a thick layer (e.g., about 0.5 mm or more) may only provide a small degradation in thermal performance.

[0048] Designs 540, 550, and 560 extend this concept by proposing the manufacture of a complete “sleeve” that may be formed into fins with an insulating layer. This could be a compact component as in 540, or separated into stacked fin elements as in 550. In the case of 560, the sleeve could be made of a robust electrically insulating material with reasonable thermal conductivity and cover the entire conduit from point 110.

[0049] Figure 6 A diagram shows an example of the enclosure opening design for an insulated heat pipe fin 108 according to one embodiment. Figure 6 The document describes three possible levels of protection. It should be noted that the primary protection is for the inner casing 103. The purpose of the outer protection is then primarily as follows:

[0050] - Ensure electrical insulation from the user should the insulation of insulating sleeve 121 be damaged.

[0051] - Ensure mechanical protection for fin 108 (based on its robustness),

[0052] - Ensure thermal protection to prevent users from contacting hot components.

[0053] -Reduce the exposure of fins 108 to dirt as needed.

[0054] In combination 520 / 620, plastic fins 108 are inserted into the heat pipe and separated by gaskets. The gaskets may also be plastic, ensuring complete coverage of the heat pipe. The external enclosure in the condenser area may be equipped with perforations or slots 620 to provide protection while ensuring the condenser is well exposed to airflow via natural convection. The enclosure should also allow for radiative heat transfer. This enclosure has proven feasible; however, since heat transfer from the condenser fins 108 to the ambient air represents the highest thermal resistance in the system to date, over-constraining the slots can lead to rapid degradation of thermal performance.

[0055] In the 550 / 660 combination, it is assumed that fin 108 already includes a high level of electrical insulation. In this design, the slits can be larger, and good airflow can be guaranteed. In this case, the primary function of protection is to ensure adequate protection of the insulation layer on fin 108 from external damage.

[0056] The 560 / 660 combination provides thermal protection solely for the user. However, this design assumes that the insulating fins 108 are manufactured, for example, from a solid block with good mechanical and electrical properties. In this case, the function of the outer enclosure is only thermal protection, thus protecting the user from contact with the fins 108. In principle, this can also be achieved by directly integrating the fin structure into the outer surface of the enclosure itself.

[0057] As mentioned above, the main thermal resistance of the entire system is the heat transfer from fin 108 to the ambient air via natural convection and radiation. The main methods used to ensure this are as follows:

[0058] - Provide sufficient surface area for the fins 108. It has been shown that even if the plastic fins 108 have good thermal conductivity, for example, six fins 108 may be sufficient, provided that the other components of the system perform well. The thickness, exposure, and pitch of the fin surfaces are important design elements.

[0059] - Radiative heat transfer makes a significant contribution to heat transfer, and it has been shown that spraying surface areas with high emissivity significantly improves thermal performance.

[0060] -Restricting airflow around fin 108 by using an overly restrictive external cover can significantly reduce heat transfer.

[0061] In fact, the preferred strategy is to ensure the electrical insulation of the fins 108, in which even materials with relatively low thermal conductivity can be used, which is still preferred for attempts to increase protection through more constrained airflow.

[0062] Figure 7 A graph showing the temperature drop across solid insulation relative to insulation thickness is presented, illustrating the effect of insulation layers on fins of varying thicknesses with different thermal conductivityes. It can be seen that even very thick layers allow for the use of materials with conductivity on the order of 1 W / mK, and even plastic coatings of 0.1 W / mK remain acceptable at the millimeter level.

[0063] Tests were conducted using commercially available plastic fins with a thermal conductivity on the order of 3 W / mK. This indicates that such a conductivity level is sufficient for all-plastic fins. By integrating this arrangement with a fan, thermal performance can be significantly improved, allowing the fan to operate, for example, temporarily to reduce peak loads.

[0064] Figure 8 A schematic diagram of a charging station 120 connected to a vehicle 800 via an electric vehicle charging connector 100 is shown as an example. The connection between the electric vehicle charging connector 100 and the charging station 120 is fixed, such that the electric vehicle charging connector 100 is part of the charging station 120.

[0065] By studying the accompanying drawings, the disclosure, and the appended claims, those skilled in the art can understand and implement other variations of the disclosed embodiments in practicing the claimed invention. In the claims, the word "comprising" does not exclude other elements or steps, and the indefinite articles "a" or "an" do not exclude multiple. The fact that certain measures are recited in mutually different dependent claims does not imply that combinations of these measures cannot be advantageously used. Any reference numerals in the claims should not be construed as limiting the scope of the claims.

Claims

1. An electric vehicle charging connector (100) for a charging station, comprising: case; A heat pipe (106) is attached to a heat source inside the housing, the heat source being the power contact of the electric vehicle charging connector or the cable at the power contact; as well as Compartment (102), wherein the heat pipe is attached to the heat source inside the compartment; The heat pipe (106) includes: Metal heat receiving section (107); Heat conduction section; A heat dissipation section (109) comprising a tube and an insulating sleeve (121) surrounding at least the heat receiving section (107), the heat dissipation section (109) being disposed inside the housing, and the insulating sleeve being configured to at least electrically insulate the metal heat receiving section from the heat source, wherein only the insulating sleeve of the heat pipe is in contact with the heat source.

2. The electric vehicle charging connector (100) according to claim 1 further includes: An outer casing (104) forming the housing of the electric vehicle charging connector, the outer casing (104) being configured to receive a cable (101) in the rear end region (111) of the electric vehicle charging connector (100) and to enclose the inner casing (103) at the front end region (113) of the electric vehicle charging connector (100); and The inner enclosure (103), disposed in the front end region (113) of the electric vehicle charging connector (100), is configured to receive the cable (101) from the outer enclosure (104) and guide the cable to the power contacts of the electric vehicle charging connector (100).

3. The electric vehicle charging connector (100) according to claim 1, wherein the electric vehicle charging connector (100) includes the cable, and wherein the cable includes means configured to receive a grounding cable from a metal portion of the heat pipe, such that the voltage of the heat pipe with respect to the cable is electrically connected to ground.

4. The electric vehicle charging connector (100) according to claim 2, wherein the heat dissipation portion further includes fins, and the outer casing (104) in the region of the heat dissipation portion (109) includes perforations or slits, the number and size of which are designed to provide overall target protection for the user's thermal protection, mechanical protection of the fins, electrical insulation to the user in the event of damage to the insulation sleeve (121), and dirt protection, based on the heat dissipation and insulation characteristics of the heat dissipation portion (109).

5. The electric vehicle charging connector (100) according to claim 2, wherein the inner shell (103) is completely sealed and further includes a sealing passage (110) such that the heat receiving portion of the heat pipe (106) is arranged inside the sealed inner shell (103), and the heat dissipation portion (109) is located outside the sealed inner shell (103) and inside the outer shell (104).

6. The electric vehicle charging connector (100) according to claim 1, wherein the heat dissipation portion further includes fins, wherein the tube and the fins provide the heat guiding portion.

7. The electric vehicle charging connector (100) according to claim 1, wherein the heat dissipation portion further includes a tube providing the heat guiding portion, and fins, wherein the fins are integral fins made of insulating material; and wherein the tube is fitted by the integral fins.

8. The electric vehicle charging connector (100) according to claim 2, wherein the heat source is located in the inner enclosure (103), and wherein the heat pipe is configured to guide heat from the heat source in the inner enclosure (103) to the free space in the outer enclosure (104).

9. The electric vehicle charging connector (100) according to claim 1, wherein the heat dissipation portion further includes fins, wherein the tube and the fins are fitted with a sleeve, the sleeve forming an electrical insulating layer.

10. The electric vehicle charging connector (100) according to claim 9, wherein the insulating layer is made of a material with a conductivity on the order of 1 W / mK.

11. The electric vehicle charging connector (100) according to claim 9, wherein the insulating layer is made of plastic with a thermal conductivity on the order of 3 W / mK.

12. The electric vehicle charging connector (100) according to claim 9, wherein the sleeve is a compact component.

13. The electric vehicle charging connector (100) according to claim 9, wherein the sleeve is separated into finned elements and stacked together.

14. The electric vehicle charging connector (100) according to claim 1, wherein the surface area of ​​the heat dissipation portion is coated.

15. The electric vehicle charging connector (100) of claim 1, wherein the heat pipe is configured to guide heat from the heat source to free space within the housing.

16. A charging station (120) comprising an electric vehicle charging connector (100) according to any one of claims 1 to 15.

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