CN109787042B

CN109787042B - Electrical connector

Info

Publication number: CN109787042B
Application number: CN201711114168.5A
Authority: CN
Inventors: 黄金柱; 罗自皓
Original assignee: Delta Electronics Inc
Current assignee: Delta Electronics Inc
Priority date: 2017-11-13
Filing date: 2017-11-13
Publication date: 2021-07-23
Anticipated expiration: 2037-11-13
Also published as: CN109787042A

Abstract

An electrical connector includes an electrically insulating body, at least two pins, a heat-conducting element, and a temperature-sensing element. The electrical insulation body is provided with an accommodating space and a first shell, and the first shell is provided with an inserting surface. The pin penetrates through the first shell, and one end of the pin extends into the accommodating space. The heat and electricity conducting element is arranged in the containing space, extends towards the pin and is isolated from the pin space, and the heat and electricity conducting element is close to the first shell. The temperature sensing element is embedded in the heat conduction and electric conduction element.

Description

Electrical connector

Technical Field

The present invention relates to an electrical connector, and more particularly, to an electrical connector with a temperature sensing element.

Background

When an Alternating Current (AC) power supply is used to supply power to an electronic device or equipment, an electrical connector suitable for the AC power supply is used to electrically connect the electronic device or equipment to supply power for the electronic device or equipment from a commercial power or a power supply.

Generally, in the power supply process, if the elastic sheet of the power socket loosens, the contact area between the pins of the electrical connector and the copper sheet of the socket is small, and the impedance rises, so that the temperature of the contact area rises; or, when the electronic device or equipment needs a higher power supply or operates in a high voltage environment for a long time, the temperature of the conventional electric connector and the wires connected with the conventional electric connector is increased; or other abnormal conditions (such as dust accumulation) or human negligence, etc., which may cause the temperature of the contact area, the conventional electrical connector may melt the housing and socket and even burn. In other words, the conventional electrical connector without a temperature detecting mechanism would be melted and burned if there is a temperature increase factor of the entire electrical connector and the wires.

Therefore, there is a need to develop an electrical connector and a temperature detecting mechanism thereof that can solve the above-mentioned problems of the prior art and achieve precise temperature monitoring and fast temperature response, so as to improve the industrial applicability.

Disclosure of Invention

The invention provides an electrical connector, comprising:

an electrical insulation body, which is provided with an accommodating space and a first shell, wherein the first shell is provided with an inserting surface;

at least two pins, which are arranged through the first shell, and one end of each pin extends into the containing space;

a heat and electricity conducting element, which is configured in the containing space, extends to the pins and is isolated from the pin spaces, and the heat and electricity conducting element is closely adjacent to the first shell; and

at least one temperature sensing element embedded in the heat and electricity conducting element.

The present invention also provides an electrical connector suitable for a socket, wherein the electrical connector comprises:

an electrical insulation body, which has a plurality of shells defining an accommodation space and an insertion surface;

at least two pins, one end of each pin extends into the containing space from the plugging surface, and the other end extends from the plugging surface to correspond to the socket;

a heat and electricity conducting element completely coated in the containing space of the electrical insulation body and located between the pins, wherein the heat and electricity conducting element is provided with an upper surface and two opposite side surfaces, the upper surface is adjacent to the plugging surface, and the side surfaces are respectively corresponding to the pins; and

An object of the present invention is to provide a heat conductive element capable of effectively transferring heat energy to a temperature sensing element, so as to prevent heat dissipation and increase accuracy of temperature sensing.

Drawings

Various aspects of the invention will become apparent upon reading the following detailed description and upon reference to the accompanying drawings. It should be noted that, in accordance with standard practice in the industry, various features are not drawn to scale. In fact, the dimensions of various features may be arbitrarily increased or reduced for clarity of discussion.

Fig. 1A is a perspective view of an electrical connector according to a portion of an embodiment of the present invention.

Fig. 1B is a perspective view of the electrical connector of fig. 1A.

Fig. 1C is a schematic cross-sectional view of the electrical connector of fig. 1B.

Fig. 1D is a schematic cross-sectional view of the electrical connector of fig. 1A.

Fig. 1E is a schematic diagram of a heat conductive and electric conductive element according to some embodiments of the invention.

Fig. 1F is a schematic cross-sectional view of an electrical connector according to some embodiments of the invention.

Fig. 2A and fig. 2B are schematic views of a heat conductive element according to some embodiments of the invention.

Fig. 3A is a perspective view of a portion of an electrical connector according to an embodiment of the present invention.

Fig. 3B is a schematic cross-sectional view of the electrical connector of fig. 3A.

Fig. 4A is a perspective view of a portion of an electrical connector according to an embodiment of the present invention.

Fig. 4B is a schematic cross-sectional view of the electrical connector of fig. 4A.

Wherein, the reference numbers:

10. 11, 12 electric connector

100. 110, 120 pins

102. 112, 122 first pin

104. 114, 124 second leg

106. 116, 126 third leg

200. 210, 220 electrically insulating body

202 accommodating space

300. 310, 320 first shell

302. 312 extension part

302A first extension

302B second extension

302C third extension

400. 405, 405A, 405B, 406, 410, 420 thermally and electrically conductive element

400A, 406A, 420A first part

400B, 406B, 420B second part

402. 408, 422 containing space

500. 505, 506, 510, 520 temperature-sensing element

600 insulating sheet

4001. 4101 upper surface

4002. 4003, 4102, 4103 side surfaces

4004. 4104 lower surface

4005. 4065 inner surface

G gap

R perforation

S1 plug surface

Detailed Description

The following disclosure provides many different embodiments, or examples, for implementing different features of the subject matter presented herein. A specific example of components and arrangements are described below to simplify the present disclosure. Of course, this example is merely illustrative and not intended to be limiting. For example, the following description of a first feature formed over or on a second feature may, in embodiments, include the first feature being in direct contact with the second feature, and may also include forming additional features between the first and second features such that the first and second features are not in direct contact. Moreover, the present invention may repeat reference numerals and/or letters in the various examples. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed.

Furthermore, spatially relative terms, such as "below", "lower", "above", "upper", and the like, are used herein to simplify description to describe one element or feature's relationship to another element or feature as illustrated in the figures. Spatially relative terms also encompass different orientations of the elements in use or operation in addition to the orientation depicted in the figures. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

Fig. 1A is a perspective view of an electrical connector according to a portion of an embodiment of the present invention. Fig. 1B is a perspective view taken along line a-a of fig. 1A. Fig. 1C is a schematic cross-sectional view of the electrical connector of fig. 1B. FIG. 1D is a schematic cross-sectional view taken along line B-B of FIG. 1A.

The electrical connector 10 includes a plurality of pins 100, an electrically insulating body 200, a heat conductive element 400, and a temperature sensing element 500. The electrical insulating body 200 includes a plurality of housings, one of which is a first housing 300, located at the foremost edge of the electrical insulating body 200. Generally, the housings of the electrical insulating body 200 are integrally formed and define a receiving space 202, and some components of the electrical connector 10 are located in the receiving space 202. Wherein, the outer surface of the first casing 300 is an inserting surface S1. In some embodiments, the mating surface S1 is a flat surface, and the mating surface S1 corresponds to a surface of an external receptacle when the electrical connector 10 is connected to the external receptacle. In some embodiments, the electrically insulating body 200 may be formed of an insulating, flame-retardant material. In some embodiments, the electrically insulating body 200 may be plastic or rubber or other suitable material.

The pins 100 are disposed through the first housing 300. One end of the pin 100 extends into the accommodating space 202 of the electrical insulating body 200, and the other end of the pin 100 is disposed outside the plugging surface S1 of the first housing 300 for connecting with an external socket. The pin 100 includes a first pin 102, a second pin 104, and a third pin 106. In some embodiments, the first pin 102 may be connected to a hot line (L) of the ac power source, and the second pin 104 may be connected to a neutral line (N) of the ac power source. Alternatively, the first pin 102 may be connected to a neutral line of the ac power source, and the second pin 104 may be connected to a live line of the ac power source. The third leg 106 may be a ground terminal. In some embodiments, the third pin 106 may be omitted. The first pin 102, the second pin 104, and the third pin 106 are made of a conductive material, such as copper alloy. In addition, the first pin 102, the second pin 104, and the third pin 106 may have different designs according to the socket specification of each country.

The heat conductive element 400 and the temperature sensing element 500 are disposed in the accommodating space 202 of the electrical insulating body 200. The heat conductive element 400 is disposed adjacent to the first housing 300, and the heat conductive element 400 is disposed between the first pin 102 and the second pin 104. In some embodiments, the heat conductive element 400 is in direct contact with the first housing 300. In addition, the temperature sensing element 500 is embedded in the heat conducting and conducting element 400, and the temperature of the pin 100 is transmitted to the temperature sensing element 500 through the heat conducting and conducting element 400, so that the heat energy can be transmitted to the temperature sensing element 500 through the heat conducting and conducting element 400 with higher heat conductivity, thereby accurately sensing the temperature. In addition, the accommodating space 202 is not filled with other insulating materials, so as to reduce the loss of heat energy in the process of conducting the heat conducting element 400 to the temperature sensing element 500, and accordingly, the accuracy of the temperature sensing element 500 can be improved.

The material of the thermally and electrically conductive element 400 may be a low thermal resistance substance such as metal, graphite, or a suitable electrically conductive material, as opposed to an insulating material. In the present embodiment, the material of the heat conductive element 400 is aluminum (Al), and the heat conductivity thereof is 237(W/m · k). In some embodiments, the heat conductive element 400 may be selected from a conductive material with a thermal conductivity of 30(W/m · k) or more.

In some embodiments, the temperature-sensing element 500 may be a thermistor. For example, a Negative Temperature Coefficient thermistor (NTC) or a positive Temperature Coefficient thermistor (PTC). The thermistor generally has high sensitivity to temperature, and can faithfully exhibit temperature variation, thereby achieving the purpose of monitoring the temperature of the pin 100 of the electrical connector 10.

Referring to fig. 1C and 1D, in some embodiments, the heat conducting element 400 is completely disposed in the electrical insulation body 200. In other words, the electrically insulating body 200 substantially covers the thermally and electrically conductive element 400, and the first housing 300 covers the thermally and electrically conductive element 400. The heat conductive element 400 of the present embodiment may have a concave shape. In other words, the heat conductive and electricity conductive element 400 includes a first portion 400A and two second portions 400B connected to each other, the first portion 400A directly contacts the first housing 300, and the second portions 400B are adjacent to the pins 100. The extending direction of the first portion 400A crosses the extending direction of the second portion 400B, and the second portion 400B extends from both ends of the first portion 400A. In other words, the extending direction of the first portion 400A is parallel to the inserting surface S1, and the extending direction of the second portion 400B is parallel to the extending directions of the first pin 102 and the second pin 104. The first portion 400A and the second portion 400B together form an accommodating space 402.

It is noted that the thermally and electrically conductive element 400 is spatially isolated from the pin 100. In an embodiment of the invention, referring to fig. 1C, the first portion 400A extends to two ends of the first pin 102 and the second pin 104, but does not contact the first pin 102 and the second pin 104, and the electrically insulating body 200 further includes at least one extending portion 302. In the present embodiment, the extending portion 302 is connected to or integrally formed with the first housing 300 and extends toward the accommodating space 202. The extension portion 302 has a first extension portion 302A at least disposed between the heat conductive element 400 and the first pin 102 or the second pin 104, thereby spatially isolating the heat conductive element 400 from the pin 100. If the heat conductive element 400 contacts any pin 100, a large amount of current may be transmitted to the heat conductive element 400, and the temperature sensing element 500 may be broken down, thereby damaging the temperature sensing element 500. In addition, since the heat conductive element 400 is spatially isolated from the pin 100, the temperature sensing element 500 is also spatially isolated from the pin 100. Therefore, in the design of the circuit layout (layout), the pins 100 and the temperature sensing element 500 can be designed on the primary side and the secondary side of the circuit board, respectively. Since the primary side has a relatively large current relative to the secondary side, the temperature sensing element 500 is designed on the secondary side of the circuit board to prevent damage caused by excessive current.

The shortest distance between two adjacent conductors, measured along the insulating surface, is defined as the creepage distance (CR). The creeping distance should comply with the regulations of each country. In the embodiment, the thermally conductive element 400 has an upper surface 4001, two

opposite side surfaces

4002 and 4003, and a lower surface 4004. The top surface 4001 is a surface of the heat conductive element 400 closest to the mating surface S1, the side surfaces 4002 and 4003 correspond to the first pin 102 and the second pin 104, respectively, and the bottom surface 4004 is a surface opposite to the top surface 4001. In detail, the lower surface 4004 is actually a lower surface of the second portion 400B of the thermally and electrically conductive member 400. Generally, the upper surface 4001 is covered by the first housing 300. The side surfaces 4002 and 4003 are covered by the first extending portion 302A, and to increase the creepage distance, the first extending portion 302A may form a second extending portion 302B in the accommodating space 402 along the extending direction of the lower surface 4004, in other words, the second extending portion 302B covers the lower surface 4004.

In this embodiment, the second extending portion 302B further extends from the lower surface 4004 of the conductive element 400 to a direction away from the plugging surface S1 to form a third extending portion 302C. In some embodiments, the extending direction of the third extending portion 302C is parallel to the first pin 102 and the second pin 104, and the second extending portion 302B may be perpendicular to the third extending portion 302C, in other words, the extending portion 302 may have an integral structure with at least two bends. In other embodiments, the length and profile of the extension 302 may be designed such that the creepage distance between the thermal conductive element 400 and the pin 100 meets the safety regulations of various countries. In some other embodiments, the extension 302 may only include a first extension 302A and a second extension 302B (e.g., the embodiments of fig. 3A and 3B) under the premise of meeting safety requirements. In other embodiments, the extension 302 may comprise only the first extension 302A (as in the embodiment of fig. 1F).

In the present embodiment, as shown in fig. 1B and fig. 1C, the first portion 400A of the heat conductive element 400 has a through hole R, and the through hole R can extend from the accommodating space 402 to the first housing 300, wherein the temperature sensing element 500 is disposed in the through hole R. The through hole R penetrates through the first portion 400A of the heat conductive element 400, such that the first housing 300 is communicated with the accommodating space 202 (or the accommodating space 402) through the through hole R. Therefore, the temperature sensing element 500 can be embedded in the through hole R of the heat conductive element 400 and directly fixed on the first housing 300, and the temperature sensing element 500 can be fixed on the first housing 300 by dispensing or locking.

Referring to fig. 1E, in some embodiments, the through hole R does not penetrate through the first portion 400A of the heat conductive element 400, and the temperature sensing element 500 may be embedded in the through hole R of the heat conductive element 400 by dispensing or locking. In other embodiments, the heat conductive element 400 may not have the through hole R, and the temperature sensing element 500 may be fixed on the inner surface 4005 of the heat conductive element 400 by a glue or a lock. In other words, the temperature sensing element 500 is disposed in the accommodating space 402, and please refer to the description of fig. 2B later.

Please refer back to fig. 1B and fig. 1C. From the perspective of thermal energy transfer, the extending direction of the first portion 400A is substantially parallel to the insertion surface S1 of the first casing 300 and is close to the first casing 300, so that the thermal energy at the insertion surface S1 can be uniformly and rapidly transferred to the temperature sensing element 500. On the other hand, the two second portions 400B are respectively close to the first pin 102 and the second pin 104, and extend in a direction substantially parallel to the first pin 102 and the second pin 104, so that heat energy of the first pin 102 and the second pin 104 can be uniformly and rapidly transferred to the temperature sensing element 500. Generally, the mating surface S1 has a relatively high temperature (closer to the external socket) relative to other portions of the electrical connector 10, and the first pin 102 and the second pin 104 have a higher temperature due to the metal material with high thermal conductivity. Therefore, the invention can utilize the conductor to cover the temperature sensing element under the requirement of safety regulations, thereby improving the heat conduction efficiency.

In addition, the heat conductive element 400 is not limited to the shape of a Chinese character 'ao', and may have a structure capable of effectively transferring the heat energy of the pin 100 to the temperature sensing element 500. Referring to fig. 1F, in other embodiments, the heat conductive element 400 may have a shape of a Chinese character 'yi', that is, the heat conductive element 400 only has a first portion 400A without the accommodating space 402, but has three sides corresponding to the plugging surface S1 and the pins 100 respectively as in the previous embodiments, and the first portion 400A may have a through hole R that may or may not penetrate through the first portion 400A of the heat conductive element 400.

Fig. 2A is a schematic view of a heat conductive and electric conductive element according to some embodiments of the invention. The thermally and electrically conductive element 405 is similar in features to the thermally and electrically conductive element 400 of fig. 1B-1C. Unlike the previous embodiment, the perforation of the thermally and electrically conductive element 405 of fig. 2A may be a gap G, wherein the gap G divides the entire thermally and electrically conductive element 405 into two pieces. In another aspect, the embodiment of fig. 2A can be regarded as having a first thermally and electrically conductive element 405A and a second thermally and electrically conductive element 405B, wherein the first thermally and electrically conductive element 405A and the second thermally and electrically conductive element 405B are respectively in an "L" shape. The first thermally and electrically conductive element 405A and the second thermally and electrically conductive element 405B are combined to form the concave-shaped thermally and electrically conductive element 405, and a gap G is formed between the first thermally and electrically conductive element 405A and the second thermally and electrically conductive element 405B. In some embodiments, the temperature sensing element 505 is disposed in the gap G, and may be fixed on the heat conductive element 405 or the first housing 300 by a dispensing or locking method.

Fig. 2B is a schematic diagram of a heat conductive and electric conductive element according to a part of the embodiment of the invention. The thermally and electrically conductive element 406 is similar in feature to the thermally and electrically conductive element 400 of fig. 1B-1C. Different from the foregoing embodiments, the first portion 406A of the heat conductive element 406 does not have a through hole or a gap, so the temperature sensing element 506 is disposed in the accommodating space 408 defined by the first portion 406A and the second portion 406B. Similarly, the temperature sensing element 506 can be fixed on the inner surface 4065 of the heat conductive element 406 by glue or locking.

Fig. 3A is a cross-sectional perspective view of a portion of an electrical connector according to an embodiment of the present invention. Fig. 3B is a schematic cross-sectional view of the electrical connector of fig. 3A. For the sake of simplicity, details similar to those of the previous embodiments will not be repeated.

The electrical connector 11 includes a plurality of pins 110, an electrically insulating body 210, a heat conducting element 410, a temperature sensing element 510, and a plurality of insulating sheets 600. The pins 110 include a first pin 112, a second pin 114, and a third pin 116. The difference between the present embodiment and the previous embodiment is that an insulating sheet 600 is disposed between the heat conductive element 410 and the pin 110. In some embodiments, an insulating sheet 600 is disposed between the first pin 112 and the heat conductive element 410, and another insulating sheet 600 is disposed between the second pin 114 and the heat conductive element 410. In some embodiments, the insulating sheet 600 directly contacts the thermally and electrically conductive element 410, the first pins 112, and the second pins 114.

The heat conductive element 410 has two

opposite side surfaces

4102 and 4103, wherein the side surfaces 4102 and 4103 face the first pin 112 and the second pin 114, respectively. In some embodiments, the area of the insulating sheet 600 is substantially equal to or larger than the areas of the side surfaces 4102 and 4103, so that the heat conductive element 410 is completely isolated from the pins 110. In other words, the upper surface 4101 of the heat conductive element 410 is covered by the first housing 310, the side surfaces 4102 and 4103 are covered by the insulating sheet 600, and the lower surface 4104 is covered by the extension 312. The extension 312 of the present embodiment does not extend from the first housing 310, but extends from other housings of the electrical insulating body 210 to the accommodating space.

The insulation sheet 600 may be an insulation material having good thermal conductivity, such as ceramic. For example, in some embodiments, the material of the insulating sheet 600 is alumina, and the thermal conductivity thereof is 24 (W/m.k). In other embodiments, the insulating sheet 600 is made of aluminum nitride and has a thermal conductivity of 170 (W/m.k). Generally, the thermal conductivity of the material of the insulating sheet 600 is greater than the thermal conductivity of the electrically insulating body 210. The insulation sheet 600 can be formed in the electrical insulation body 210 by insert molding. The advantage of this configuration is that the insulating sheet 600 with insulation property can not only spatially isolate the heat conductive element 410 from the first pin 112 and the second pin 114, but also the insulating sheet 600 with higher heat conductivity can transfer the heat energy of the first pin 112 and the second pin 114 to the heat conductive element 410, so as to avoid the loss of heat and further increase the accuracy of temperature sensing.

Fig. 4A is a cross-sectional perspective view of a portion of an electrical connector according to an embodiment of the present invention. Fig. 4B is a schematic cross-sectional view of the electrical connector of fig. 4A. For the sake of simplicity, details similar to those of the previous embodiments will not be repeated.

The electrical connector 12 includes a plurality of pins 120, an electrically insulating body 220, a heat conductive element 420, and a plurality of temperature sensing elements 520. The electrically insulating body 220 includes a first housing 320. The pins 120 include a first pin 122, a second pin 124, and a third pin 126. The thermally and electrically conductive element 420 of the present embodiment is generally "concave". In other words, the thermally and electrically conductive element 420 includes a first portion 420A and two second portions 420B that are connected to each other. The extending direction of the first portion 420A is substantially perpendicular to the extending direction of the second portion 420B, and the second portion 420B extends from both ends of the first portion 420A. The first portion 420A and the second portion 420B together form an accommodating space 422.

The difference between the present embodiment and the previous embodiments is that the number of the temperature sensing elements 520 is two, and the temperature sensing elements are disposed in the accommodating space 422 of the heat conductive element 420. Each temperature-sensing element 520 may be connected to the second portion 420B of the thermally and electrically conductive element 420; in other embodiments, each temperature sensing element 520 can be connected to both the first portion 420A and the second portion 420B of the thermally and electrically conductive element 420. The advantage of this configuration is that by increasing the number of the temperature sensing elements 520, the temperature sensing elements 520 are respectively close to the first leg 122 and the second leg 124, and the temperature sensing accuracy of the temperature sensing elements 520 can be improved under the condition of shortening the heat conduction path. In this embodiment, the temperature sensing element 520 is fixed on the heat conductive element 420 by locking. However, the invention is not limited thereto, and in other embodiments, the temperature sensing element 520 may be fixed by using a dispensing method. In other embodiments, the heat conductive element 420 may have a plurality of through holes, wherein the through holes may be configured similar to the through holes R described in fig. 1B and 1C, and the temperature sensing elements 520 may be embedded in the through holes of the heat conductive element 420, respectively. In addition, the through hole can also penetrate through the heat conductive element 420, and the temperature sensing element 520 can be respectively fixed on the shell (e.g., the first shell 320) of the electrical insulation body 220 through the through hole.

The invention provides an electric connector, which comprises a plurality of pins, an electric insulation body, a heat conduction and electric conduction element and a temperature sensing element. The electrical insulation body is provided with an accommodating space and a first shell. The pin penetrates through the first shell. The heat and electricity conducting element is arranged in the accommodating space of the electrical insulation body. The heat and electricity conducting element is closely adjacent to the first shell, and the heat and electricity conducting element is configured between the pins and is isolated from the pin space. The temperature sensing element is embedded in the heat conduction and electric conduction element. The invention has the advantages that the heat conducting and conducting element can effectively transfer heat energy to the temperature sensing element so as to avoid heat loss and increase the accuracy of temperature sensing.

It is to be understood that not all advantages need be discussed herein and not all advantages need be present in each embodiment or example, as different advantages may be provided in other embodiments.

The foregoing outlines features of several embodiments so that those skilled in the art may better understand the aspects of the present disclosure. Those skilled in the art should appreciate that they may readily use the present disclosure as a basis for designing or modifying other processes and structures for carrying out the same purposes and/or achieving the same advantages. It should also be understood by those skilled in the art that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the disclosure, and that such equivalent constructions may be modified without departing from the spirit and scope of the disclosure.

Claims

1. An electrical connector, comprising:

an electrical insulation body having a plurality of shells integrally formed to define an accommodation space, one of the shells being a first shell having an insertion surface;

a heat and electricity conducting element, which is configured in the containing space and extends to the pins, and is isolated from the pin spaces, the heat and electricity conducting element is closely adjacent to the first shell, the heat and electricity conducting element is provided with an upper surface and a lower surface which are opposite, and two side surfaces which are opposite, wherein the upper surface is adjacent to the plugging surface, and the two side surfaces are respectively adjacent to the pins; and

at least one temperature sensing element, which is configured in the accommodating space of the electrical insulation body and is embedded in the heat conduction and electric conduction element;

the electrical insulating body further comprises at least one extending part connected with the first shell, the extending part is provided with a first extending part, and the first extending part extends to a position between the heat and electricity conducting element and one of the pins so as to completely isolate the heat and electricity conducting element from the one of the pins; the first extension part extends along the lower surface of the heat conduction and electric conduction element to form a second extension part in the accommodating space, and the second extension part coats the lower surface; the second extending part extends from the lower surface to a direction far away from the plugging surface to form a third extending part; the extension part enables the creepage distance between the heat conduction and electric conduction element and any one of the pins to meet the safety specification;

wherein, the heat and electricity conducting element is directly contacted with the first shell, the heat and electricity conducting element is selected from electricity conducting materials with the heat conductivity of more than 30W/m.k, and the heat and electricity conducting element is metal.

2. The electrical connector of claim 1, wherein the heat conductive element comprises a first portion and two second portions connected to each other, wherein the second portions extend from two ends of the first portion respectively, and the extending direction of the first portion intersects with the extending direction of the second portions.

3. The electrical connector of claim 2, wherein the number of the temperature sensing elements is two, and the temperature sensing elements are respectively fixed to the second portions.

4. The electrical connector of claim 1, wherein the thermally and electrically conductive element has a through hole, and wherein the temperature sensing element is disposed in the through hole.

5. The electrical connector as claimed in claim 4, wherein the through hole penetrates through the heat conductive element such that a portion of the first housing is in communication with the accommodating space through the through hole, and the temperature sensing element is fixed to the first housing through the through hole.

6. The electrical connector of claim 1, wherein the extension portion has a two-fold integral structure.

7. An electrical connector adapted for use with a receptacle, the electrical connector comprising:

an electrical insulation body having a plurality of shells integrally formed to define an accommodating space and an insertion surface, one of the shells being a first shell;

a heat and electricity conducting element completely coated in the containing space of the electrical insulation body and located between the pins, wherein the heat and electricity conducting element is provided with an upper surface, a lower surface and two opposite side surfaces, the upper surface is adjacent to the plugging surface, and the side surfaces respectively correspond to the pins; and

wherein the electrically insulating body further comprises at least one extension part connected with the first shell, the extension part is provided with a first extension part, the first extension part is connected with one of the shells and covers one of the side surfaces, so that the heat and electricity conducting element is completely electrically insulated from one of the pins; the first extension part extends along the lower surface of the heat conduction and electric conduction element to form a second extension part in the accommodating space, and the second extension part coats the lower surface; the second extending part extends from the lower surface to a direction far away from the plugging surface to form a third extending part; the extension part enables the creepage distance between the heat conduction and electric conduction element and any one of the pins to meet the safety specification;

wherein the heat and electricity conducting element is selected from electricity conducting materials with heat conductivity of more than 30W/m.k, and the heat and electricity conducting element is metal.

8. The electrical connector as claimed in claim 7, wherein the heat conductive element is connected to a first portion and two second portions to form a concave shape, the insertion surface covers the first portion, and the temperature sensing element is embedded in the first portion and fixed to one of the housings.

9. The electrical connector as claimed in claim 7, wherein the heat conductive element is connected to a first portion and two second portions to form a concave shape and define another receiving space, the mating surface covers the first portion, and the two temperature sensing elements are fixed in the another receiving space, and each of the two temperature sensing elements is close to one of the pins.

10. The electrical connector of claim 7, wherein one of the housings, the first extension, the second extension and the third extension are integrally formed.

11. The electrical connector of claim 7, wherein the thermally and electrically conductive element is in the shape of a "straight line".