KR102432326B1 - Charging connector - Google Patents

Abstract

The present invention relates to a charging connector. The present invention relates to a charging housing 10 having a terminal installation space 32 therein, and a charging terminal T1 that is accommodated in the terminal installation space 32 and has a connection part that is electrically connected to the counterpart terminal in contact with the terminal and , and temperature sensors TS1 and TS2. In addition, the temperature sensors TS1 and TS2 are accommodated in the sensor storage space 32C connected to the terminal installation space 32 to measure the temperature of the charging terminal T1.

Description

Charging connector {Charging connector}

The present invention relates to a charging connector, and more particularly, to a charging connector for charging a battery of a vehicle and having a built-in temperature sensor for measuring the temperature of a terminal installed therein.

In electric or hybrid vehicles, a high-voltage battery is used to drive a driving source, and the battery is charged through a charging connector. A charging connector installed in a vehicle is called an inlet connector, and this inlet connector can receive power when combined with a plug connector installed in a charging station.

A high voltage is provided at the charging station, so the stability of the electrical connection is important. In order to improve the stability of the electrical connection, it is necessary to monitor the state of the charging connector and take measures such as shutting off the power when an abnormality occurs in the charging connector. To this end, a temperature sensor for measuring the temperature of the charging connector, more precisely, the temperature of the terminal built into the charging connector is used.

Korean Patent Laid-Open Publication No. 10-2016-0031809 discloses a technology in which a temperature sensor is embedded in a connector in order to measure the temperature of a plug pin (terminal) embedded in the connector. A temperature sensor is built in a position adjacent to the plug pin, and the temperature sensor measures the ambient temperature of the plug pin. The measured temperature is transmitted to the control unit, and the control unit may stop charging when the temperature around the plug pin exceeds a predetermined standard.

As such, the temperature sensor built into the conventional charging connector cannot directly measure the temperature of the terminal itself, but only measures the temperature around the terminal. In this case, since the temperature of the terminal must be inferred by compensating the temperature around the terminal, the exact temperature of the terminal cannot be known, and as a result, the accuracy of temperature measurement is lowered.

In order to solve this problem, a structure in which the temperature sensor directly touches the terminal may be considered. In order to make the temperature sensor directly contact the terminal, at least a part of the temperature sensor must be assembled so that it accurately contacts the surface of the terminal. If this is not done, accurate temperature measurement becomes difficult.

Republic of Korea Patent Publication 10-2016-0031809

The present invention is to solve the problems of the prior art as described above, and an object of the present invention is to measure the temperature of the charging terminal while the temperature sensor is in direct contact with the charging terminal installed in the charging connector.

Another object of the present invention is to enable natural contact with the charging terminal when the temperature sensor is inserted into the charging connector in the same manner as the terminal.

According to a feature of the present invention for achieving the object as described above, the present invention provides a charging housing having a terminal installation space therein, and a connection part accommodated in the terminal installation space and electrically connected in contact with a counterpart terminal. It includes a charging terminal and a temperature sensor. And, the temperature sensor is accommodated in the sensor storage space connected to the terminal installation space, it is possible to measure the temperature of the charging terminal.

And, the temperature sensor is in direct contact with the surface of the charging terminal through a connected portion between the sensor storage space and the terminal installation space.

In addition, at least a portion of the temperature sensor protrudes from the sensor accommodating space toward the terminal installation space, and the protruding portion of the temperature sensor is in contact with the surface of the charging terminal.

In addition, the temperature sensor may include a sensing unit connected to the sensing wire, and a contact unit surrounding the sensing unit and contacting the charging terminal.

In addition, the contact portion is a contact spring capable of elastic deformation, and at least a portion of the contact portion protrudes toward the surface of the charging terminal.

In addition, the contact spring has a central portion that protrudes relatively more than the front and rear ends based on the longitudinal direction of the contact spring, and there are a plurality of elastic slits formed along the longitudinal direction of the contact spring in the circumferential direction of the contact spring. .

In addition, the terminal seal is coupled to the body portion of the charging terminal, and the contact portion of the temperature sensor is located on the opposite side of the connection portion of the charging terminal with respect to the terminal seal.

According to another feature of the present invention, the present invention includes a charging housing having a terminal installation space therein, a charging terminal accommodated in the terminal installation space, and electrically connected to a counterpart terminal in contact with a temperature sensor. The temperature sensor may be assembled in a sensor storage space inside the charging housing, and may contact the surface of the charging terminal through a portion connected between the sensor storage space and the terminal installation space.

The charging connector according to the present invention as described above has the following effects.

In the present invention, since the space where the terminal is installed and the space where the sensor is installed are connected to each other, the sensor can directly measure the temperature of the terminal. Therefore, it is possible to accurately measure the temperature of the terminal, which has the effect of more precisely controlling the charging connector.

In addition, in the present invention, since the sensor directly measures the temperature of the terminal, there is no need for correction for estimating the temperature of the terminal from the ambient temperature of the terminal. Therefore, the temperature measurement operation of the terminal is simplified, and accurate temperature measurement can be made regardless of the ambient conditions.

And, in the present invention, when the sensor is inserted into the connector in the same manner as the terminal, the sensor naturally comes into contact with the terminal. Therefore, the operator does not need to adjust the sensor so that the sensor accurately contacts the terminal, and the assembly workability for sensing is improved.

In addition, in the present invention, a contact spring is assembled to the sensor, and the contact spring can be in close contact with the terminal by using elasticity. Since the contact spring is in close contact with the terminal, the connection between the terminal and the sensor can be made more reliably, thereby further increasing the accuracy of temperature measurement.

And, in the present invention, since the terminal installation space and the sensor storage space are connected to each other, some of the heat generated in the terminal may be emitted to the sensor storage space. Therefore, it is possible to prevent excessive heat from being generated in the terminal, and there is an effect of increasing the durability and operational reliability of the terminal.

1 is a perspective view showing the configuration of an embodiment of a charging connector according to the present invention.
2 is a perspective view showing an embodiment of the present invention from an angle different from that of FIG.
3 is a perspective view showing a state in which a charging terminal, an inner housing, and a rear holder are separated from the charging housing constituting an embodiment of the present invention;
Fig. 4 is a cross-sectional view taken along line II' of Fig. 1;
5 is a cross-sectional view illustrating one of the charging terminals in FIG. 4 in a state separated from the charging housing;
Figure 6 is a perspective view showing a state in which the temperature sensor is in contact with the charging terminal constituting an embodiment of the present invention.
7 is a perspective view showing a state in which the inner housing and the wire seal are separated from the charging terminal in FIG. 6;
8 is a cross-sectional view showing a state in which the temperature sensor in the charging terminal constituting an embodiment of the present invention is in contact with each other inside the charging housing.
9 is a perspective view showing a state in which a DC terminal and a temperature sensor are in contact among the charging terminals constituting an embodiment of the present invention.
10 is a cross-sectional view showing a state in which the temperature sensor is in contact with each other inside the charging housing to the DC terminal of the charging terminals constituting an embodiment of the present invention.

Hereinafter, some embodiments of the present invention will be described in detail with reference to exemplary drawings. In adding reference numerals to the components of each drawing, it should be noted that the same components are given the same reference numerals as much as possible even though they are indicated on different drawings. In addition, in describing the embodiment of the present invention, if it is determined that a detailed description of a related known configuration or function interferes with the understanding of the embodiment of the present invention, the detailed description thereof will be omitted.

In addition, in describing the components of the embodiment of the present invention, terms such as first, second, A, B, (a), (b), etc. may be used. These terms are only for distinguishing the elements from other elements, and the essence, order, or order of the elements are not limited by the terms. When it is described that a component is “connected”, “coupled” or “connected” to another component, the component may be directly connected or connected to the other component, but between each component another component It will be understood that may also be "connected", "coupled" or "connected".

The present invention relates to a charging connector, and is a charging connector having a waterproof function. A charging terminal (T1) responsible for electrical connection is installed inside the charging connector of the present invention, and the charging terminal (T1) is primarily fixed by hanging inside the charging housing (10), and behind the charging terminal (T1). The second is fixed by the rear holder (80). In addition, the charging connector of the present invention can measure the temperature of the internal charging terminal T1 through the sensing terminals TS1 and TS2. decide to do

The charging connector of the present invention is provided in an electric vehicle (EV) or a plug-in hybrid electric vehicle (PHEV), etc., is an inlet connector installed on the side of the vehicle, or a plug connector installed in a charging station may be Hereinafter, the charging connector of the present invention will be described as an example of an inlet connector.

In this embodiment, the appearance and skeleton of the charging connector is made by the charging housing (10). The charging housing 10 has a built-in component therein, including a charging terminal T1 to be described below. The housing body 11 forming the skeleton of the charging housing 10 may be made of an insulating material. The inside of the housing body 11 is penetrated in the front-rear direction, that is, in the coupling direction with a counterpart connector (not shown) to form a terminal installation space 32 .

A plurality of brackets 12 are provided at the edge of the housing body 11 . The bracket 12 is for fixing the charging connector to the inside of the vehicle, and the charging connector can be fixed by fastening a fastener such as a bolt to the bracket 12 .

Referring to FIG. 2 , a drain hole 19 is provided at a lower portion of the housing body 11 . The drain hole 19 is for guiding the water flowing into the charging housing 10 downward, and finally discharging it. That is, the drain hole 19 is for improving the waterproof performance of the charging connector, and may be omitted.

There is a charging part 20 in front of the housing body 11 . The charging unit 20 is connected to a plug connector, which is a counterpart connector, and is exposed forward. Although not shown, a separate cover may be coupled to the charging unit 20 so that the charging unit 20 is exposed only when charging. In this embodiment, the charging unit 20 is composed of a first charging unit 21 and a second charging unit 25, which are located at different heights from each other. In this embodiment, the first charging unit 21 is charged with AC current, and the second charging unit 25 is charged with DC current, and separate plug connectors may be connected thereto. The first charging unit 21 and the second charging unit 25 may be used simultaneously or individually, and either one may be omitted.

The first charging unit 21 has an AC connection space 22 , and the second charging unit 25 has a DC connection space 26 . A part of the plug connector is inserted therein, and the AC connection space 22 and the DC connection space 26 are formed in the thickness direction of the housing body 11 (front and rear direction based on FIG. 1 ). is made through Any one of the first charging unit 21 or the second charging unit 25 may be omitted or provided by changing positions.

1 and 2, it can be seen that the charging wire (W) and the sensing wire (WS) are extended to the rear. The charging wire W and the sensing wire WS are respectively connected to the charging terminals T1 and the sensing terminals TS1 and TS2 to be described below, and transfer power supplied from the plug connector to the battery. In the figure, the charging wire (W) and the sensing wire (WS) are shown in a cut form in the middle.

Referring to FIG. 2 , there is a terminal insertion part 30 on the rear side of the housing body 11 . The terminal insertion part 30 corresponds to the charging part 20 and becomes a part into which the charging terminal T1 is inserted. The terminal inserting part 30 is provided with a first inserting part 31 and a second inserting part 35 having different heights from each other, similarly to the charging part 30 , and the first inserting part 31 has an alternating current. A first charging terminal (T1) for supplying power is installed, and a second charging terminal (T1) for supplying DC power is installed in the second insertion part (35). Hereinafter, for convenience of explanation, the first charging terminal T1 and the second charging terminal T1 will be collectively referred to as the charging terminal T1 and will be given the same reference numerals.

The first insertion part 31 has a first terminal installation space 32 , and the second insertion part 35 has a second terminal installation space 36 . The first terminal installation space 32 and the second terminal installation space 36 are formed by penetrating the housing body 11 in the thickness direction of the housing body 11 (front and rear direction with reference to FIG. 1 ). Hereinafter, the first terminal installation space 32 will be mainly described, but for convenience, it will be referred to as the terminal installation space 32 .

A first fastening protrusion 33 (refer to FIG. 3) protrudes from the surface of the first insertion part 31, and a second fastening protrusion 37 (refer to FIG. 2) protrudes from the surface of the second inserting part 35. . These first fastening protrusions 33 and second fastening protrusions 37 are for fastening with a first rear holder 81 and a second rear holder 85 to be described below, respectively. The first fastening hook 83 of the first rear holder 81 is hooked on the first fastening protrusion 33 , and the second fastening hook 87 of the second rear holder 85 is hooked on the second fastening protrusion 37 . ) takes

Referring to FIG. 3 , the first inserting part 31 and the second inserting part 35 include a first fastening rib 34 and a second fastening rib 39 , respectively. The first fastening rib 34 is formed in the direction in which the first inserting part 31 protrudes from the housing body 11, that is, in the front-rear direction based on the drawings, and the second fastening rib 39 is The second insertion part 35 is formed in a direction to protrude from the housing body 11 . The first fastening ribs 34 and the first fastening ribs 34 are coupled to the first fastening slits 84 and second fastening slits 88 of the rear holder 80 to be described below, respectively, and thus the rear holder (80) serves to guide the assembly.

A charging terminal T1 is inserted into the charging housing 10 . The charging terminal (T1) is composed of a first charging terminal (T1) in which the first insertion part (31) is accommodated, and a second charging terminal (T1) is accommodated in the second insertion part (35), which are As described above, although they are an AC charging terminal and a DC charging terminal, respectively, the same drawings are given and they will be collectively referred to as a charging terminal (T1).

Sensing terminals TS1 and TS2 are inserted into the charging housing 10 together with the charging terminal T1. The sensing terminals TS1 and TS2 are for measuring the temperature of the charging connector and correspond to a temperature sensor. The temperature sensor will be referred to as sensing terminals TS1 and TS2 hereinafter.

The sensing terminals TS1 and TS2 are inserted into the charging housing 10 . One or a plurality of the sensing terminals TS1 and TS2 may be inserted into the charging housing 10 . In this embodiment, the sensing terminals TS1 and TS2 are configured in plurality. The sensing terminals TS1 and TS2 are respectively inserted into the first inserting part 31 and the second inserting part 35, and the temperature of the charging terminal T1 accommodated in the first inserting part 31 and the second The temperature of the charging terminal T1 applied to the insertion part 35 may be measured, respectively.

The sensing terminals TS1 and TS2 may be inserted in the same direction as the charging terminal T1 or may be inserted in a different direction. As shown in FIG. 3 , the first sensing terminal TS1 inserted into the first insertion part 31 is assembled to the charging housing 10 in the same direction as the charging terminal T1 , whereas the second insertion part The second sensing terminal TS2 inserted into the 35 is assembled to the charging housing 10 in a direction orthogonal thereto through the sensing through hole 38 .

On the other hand, in the present embodiment, the second charging terminal (T1) inserted into the second insertion part (35) among the charging terminals (T1) is composed of two parts (T1, T2), the charging terminal (T1) located in the front ) and a connection terminal (T2) located at the rear relatively. The charging terminal T1 and the connection terminal T2 may be connected to each other by welding or the like. Since the second charging terminal (T1) is supplied with relatively high voltage power, to allow this, it may be composed of two parts having a size relatively larger than that of the first charging terminal (T1).

Looking at the structure of the charging terminal T1 in detail, as shown in FIGS. 6 and 7 , the skeleton of the charging terminal T1 is formed by a cylindrical body 51 , and the front of the body 51 is A contact part (reference numeral not assigned) protrudes in the direction of the opposite terminal. The contact portion has an elongated cylindrical shape having a diameter smaller than that of the body portion 51 . The contact part may be inserted into an empty space on the opposite terminal side to be coupled.

The contact portion has a fixed jaw 52 . The fixing jaw 52 is a portion having a larger diameter than the contact portion, and has a substantially ring shape. The fixing jaw 52 is caught on the lance part 32a (refer to FIG. 4 ) in the terminal installation space 32 so that the charging terminal T1 is primarily fixed to the charging housing 10 . In the process in which the fixed jaw 52 rides over the lance unit 32a, the lance unit 32a is elastically deformed and then restored to hang the fixed jaw 52. 4 shows a state in which the lance part 32a hangs the fixing jaw 52 as described above. The fixing jaw 52 is omitted, and the contact portion itself may be caught in the terminal installation space 32 .

A terminal seal (S2) is coupled to the surface of the body portion (51) of the charging terminal (T1). The terminal seal (S2) is coupled to a position spaced apart from the bottom surface (51a) of the body (51) toward the inner housing (55) in the direction of the fixing jaw (52) of the body (51). The terminal seal (S2) may prevent moisture existing around the coupling portion of the charging terminal (T1) and the opposite terminal from flowing in the rear, that is, the wire seal (S1).

For reference, in this embodiment, the terminal seal (S2) is coupled to the body part (51) of the charging terminal (T1), and the contact part (60) of the sensing terminals (TS1, TS2) to be described below is the terminal seal ( It is located on the opposite side of the connection part of the charging terminal T1 with reference to S2).

The body portion 51 of the charging terminal T1 has a relatively larger diameter than the contact portion. The bottom surface 51a of the body portion 51 is supported by an inner housing 55 to be described below. More precisely, as shown in FIG. 5 , the front part of the inner housing 55 disposed behind the charging terminal T1 supports the bottom surface 51a of the body part 51 . 5, the bottom surface 51a of the body part 51 is indicated, and the bottom surface 51a of the body part 51 has a larger diameter than the portion extending to the rear thereof, so a step is made, and this step surface is the It becomes the bottom surface (51a) of the body part (51). And since the inner housing 55 is fixed to the terminal installation space 32 by the rear holder 80, it can be secondary fixed to the terminal installation space 32 of the charging terminal T1.

The charging terminal (T1) is assembled to the inner housing (55). The inner housing 55 is installed in the terminal installation space 32 and is made of an insulating material. The inner housing 55 surrounds the outside of the charging terminal T1 at a position adjacent to the entrance of the terminal installation space 32 . The inner housing 55 surrounds the charging terminal T1 in the interior of the charging housing 10 , and may be in close contact with the rear holder 80 with a wire seal S1 to be described below interposed therebetween.

The inner housing 55 wraps the rear portion of the charging terminal T1 to increase insulation, and prevents the wire seal S1 from being excessively deformed or from being deformed evenly and from being twisted to either side. To this end, the inner housing 55 may compress the wire seal S1 by evenly pressing the whole.

When looking at the configuration of the inner housing 55 with reference to FIGS. 5 to 7 , the inner housing 55 includes a coupling body (reference numeral not given) surrounding the outside of the charging terminal T1, and the coupling body. It includes a pressure plate 55' provided. The coupling body has a substantially cylindrical shape, and there is a coupling space 56 therein. The coupling space 56 is opened in the front-rear direction, and the charging terminal T1 and the charging wire W are located inside the coupling space 56 and are surrounded by the coupling body.

The pressure plate 55' is a portion having a larger diameter than the coupling body, and has a substantially plate-shaped structure. The pressure plate 55' is a portion formed at the rear of the coupling body toward the wire seal S1 and in close contact with the wire seal S1. That is, with respect to the wire seal (S1), there is a pressure plate 55' at the front, and a rear holder 80 at the rear. Therefore, when the rear holder 80 is assembled to the terminal insertion part 30 while compressing the wire seal S1, both sides of the wire seal S1 are attached to the pressing plate 55' and the rear holder 80, respectively. It can be compressed by pressing.

In this case, the wire seal (S1) is installed to surround the connection portion of the charging terminal (T1) and the charging wire (W) at a position adjacent to the entrance of the terminal installation space (32), the wire seal (S1) It is positioned between the inner housing 55 and the rear holder 80 and is compressed between the inner housing 55 and the rear holder 80 .

The pressure plate 55 ′ has a flat rear surface 55 ′ facing the wire seal S1 to make surface contact with the wire seal S1 . In this way, the rear surface 55' of the pressing plate 55' can be in contact with the wire seal S1 in the widest possible area, and the wire seal S1 can be compressed evenly throughout without being distorted in the process of being compressed. have.

The inner housing 55 surrounds the rear portion of the charging terminal T1 adjacent to the entrance of the terminal installation space 32 , and at least a portion of the inner housing 55 is located inside the terminal installation space 32 . Movement may be restricted. More precisely, as shown in FIG. 4 , the pressing plate 55 ′ has a locking protrusion 58 , and the locking protrusion 58 is inserted into the locking groove 32b recessed in the terminal installation space 32 . . In this case, the locking protrusion 58 is inserted into the locking groove 32b so that it cannot move in the front-rear direction, and rotation is also restricted. Therefore, the inner housing 55 can maintain a firmly fixed state without movement in the terminal installation space 32 .

As such, since the inner housing 55 maintains a fixed state in the terminal installation space 32 , the compressive force applied when the rear holder 80 compresses the wire seal S1 is only applied to the inner housing 55 . is transmitted, and is not transmitted to the charging terminal T1. Therefore, even when the rear holder 80 is assembled, the charging terminal T1 can maintain a constant installation position, and the connection with the counterpart terminal can also be stably maintained.

Referring to FIG. 7 , the pressing plate 55 ′ of the inner housing 55 has a coupling protrusion 57 protruding in the direction of the rear holder 80 . The coupling protrusion 57 is a portion passing through the coupling hole S1b through the wire seal S1, and has a substantially circular cross-section. Referring to FIG. 4 , a state in which the coupling protrusion 57 passes through the coupling hole S1b penetrating through the wire seal S1 and comes into contact with the rear holder 80 is shown. In this case, when the rear holder 80 is assembled to the charging housing 10, the wire seal S1 is compressed between the rear holder 80 and the inner housing 55, but the coupling protrusion 57 is the rear holder 80 ) is compressed until Accordingly, excessive compression of the wire seal S1 can be prevented.

To this end, the length of the coupling protrusion 57 is smaller than the thickness of the wire seal S1 before being compressed, and when the wire seal S1 is compressed by the rear holder 80, the coupling protrusion 57 An end portion may be in contact with the rear holder 80 through the coupling hole S1b. As such, the inner housing 55 surrounds the connection portion between the charging terminal T1 and the charging wire W to shield the connection portion from being exposed to the outside, and improve insulation of the connector.

In addition, the inner housing 55 is separate from the charging terminal T1 and may be separately injection-molded and then inserted into the rear of the charging terminal T1. Therefore, the complex structure for compressing the wire seal (S1) and fixing the charging terminal (T1) to the inside of the charging housing (10) is in charge of the inner housing (55) that can be injection molded, and the opposite terminal It is assembled with the charging terminal (T1) to take charge of the electrical connection. In this way, the structure of the charging terminal T1 may be relatively simple.

In the present embodiment, the inner housing 55 may move relative to the charging terminal T1 within a predetermined section along the longitudinal direction of the charging terminal T1 in a state in which the charging terminal T1 is wrapped. That is, the inner housing 55 is not fixed to the charging terminal T1, but may be coupled to be relatively movable. Therefore, even if an error exceeding the allowable error occurs in the manufacturing process of the inner housing 55 or the charging housing 10, it is possible to compensate to some extent, and the assembly between the inner housing 55 and the charging terminal T1 becomes easy. .

In addition, the inner housing 55 has a sensor insertion hole 56 ′. The sensor insertion hole 56 ′ is formed through the inner housing 55 , and the first sensing terminal TS1 may be inserted therein. Referring to FIG. 6 , a state in which the first sensing terminal TS1 is inserted into the sensor insertion hole 56 ′ is shown. The first sensing terminal TS1 wrapped in the sensor insertion hole 56 ′ may be supported without movement by the inner housing 55 .

On the other hand, referring to FIG. 7 , the coupling hole S1b through which the coupling protrusion 57 passes is penetrated in the wire seal S1, and the wire hole S1a through which the charging wire W passes is penetrated. In addition, an auxiliary wire hole S1a' through which the sensing wire WS passes may pass through the wire seal S1.

Referring to FIG. 5 , a portion of the first sensing terminal TS1 is exposed inside the terminal installation space 32 in which the charging terminal T1 is installed. More precisely, a sensor accommodating space 32c is connected to the terminal installation space 32, and the first sensing terminal TS1 is connected through a portion where the sensor accommodating space 32c and the terminal installation space 32 are connected. ) is exposed toward the terminal installation space (32). In this case, a portion of the first sensing terminal TS1 may be in contact with the charging terminal T1 through the sensor storage space 32c.

At this time, the first sensing terminal TS1 may include a sensing unit (reference numeral not given) connected to the sensing wire WS, and a contact unit 60 surrounding the sensing unit and in contact with the charging terminal T1. have. The sensing unit may be viewed as the entire remainder of the first sensing terminal TS1 excluding the contact unit 60 .

And, in this embodiment, the contact portion 60 becomes a contact spring capable of elastic deformation, and at least a portion of the contact portion 60 protrudes in the direction of the surface of the charging terminal T1, and comes into contact with the charging terminal T1. can be

The contact portion 60 is for measuring the temperature of the first sensing terminal (TS1) in contact with the charging terminal (T1). In this embodiment, the contact portion 60 may be configured as a context spring, the context spring is coupled to the first sensing terminal (TS1) to measure the temperature of the charging terminal (T1) to the first sensing terminal (TS1) can be forwarded to In the present embodiment, the contact part 60 is composed of a lamellae spring. Unlike this, the contact part 60 may be composed of various elastic materials, or may be composed of parts without elastic force.

More precisely, the center of the contact portion 60 is relatively more protruding than the front and rear ends based on the longitudinal direction of the contact portion 60 , and the elastic slit formed along the longitudinal direction of the contact portion 60 is the contact. It may be composed of a plurality of lamellae springs in the circumferential direction of the spring.

A state in which the contact portion 60 is in contact with the charging terminal T1 is well illustrated in FIG. 8 . A portion K1 of FIG. 8 indicates a portion where the contact portion 60 of the charging terminal T1 and the first sensing terminal TS1 is in contact with each other. As can be seen, the sensor storage space 32c is connected to the terminal installation space 32, and the contact portion 60 of the first sensing terminal TS1 is in contact with the charging terminal T1 through the connected portion. it can be

In this embodiment, the contact spring 60 may be in direct contact with the charging terminal T1 through a portion connected to the terminal installation space 32 and the sensor storage space 32c. Accordingly, it is possible to accurately measure the temperature of the charging terminal T1, and through this, it is possible to more precisely control the charging connector.

In addition, since the first sensing terminal (TS1) directly measures the temperature of the charging terminal (T1), a correction operation for estimating the temperature of the charging terminal (T1) from the ambient temperature of the charging terminal (T1) is not required. Therefore, the temperature measurement operation of the charging terminal T1 is simplified, and accurate temperature measurement can be made regardless of the surrounding conditions.

In addition, since the first sensing terminal TS1 is not for electrical connection with the charging terminal T1, but for measuring the temperature of the charging terminal T1, it may be configured as a temperature sensor. The temperature information of the charging terminal T1 measured by the first sensing terminal TS1 may be transmitted to a controller (not shown) through the sensing wire WS. If the charging terminal T1 is overheated, the control unit may recognize this and notify the user or stop the operation of the charging connector.

Meanwhile, in FIGS. 9 and 10 , a state in which the DC charging terminal T1 located relatively lower among the charging terminals T1 is in contact with the second sensing terminal TS2 is shown. Since the second sensing terminal TS2 is basically the same as the first sensing terminal TS1, only a different structure will be described.

Unlike the first sensing terminal TS1, the second sensing terminal TS2 is installed in a direction perpendicular to the connection direction of the charging terminal T1. More precisely, the second sensing terminal TS2 may be in close contact with the bottom surface of the charging terminal T1. The second sensing terminal TS2 is in close contact with the bottom surface of the charging terminal T1 to measure the temperature of the charging terminal T1. Of course, unlike this, the second sensing terminal TS2 may be in close contact with the upper surface of the charging terminal T1. Referring to FIG. 3 , it can be seen that the second sensing terminal TS2 is inserted in a direction perpendicular to the connection direction of the charging terminal T1 .

Referring to FIG. 10 , a state in which the second sensing terminal TS2 extends in a direction perpendicular to the charging terminal T1 and is in contact with the charging terminal T1 is expressed. K2 indicates a portion where the contact portion 60 of the second sensing terminal TS2 and the charging terminal T1 are connected to each other. The second sensing terminal TS2 may also be strongly adhered to the charging terminal T1 through the elasticity of the contact portion 60 , thereby enabling accurate temperature measurement.

Next, looking at the rear holder 80 , when the rear holder 80 is assembled to the charging housing 10 , the charging terminal T1 is connected to the inner housing 55 by supporting the rear of the inner housing 55 . ) serves as a secondary fixation. More precisely, the rear holder 80 is assembled to the first insertion part 31 and the second insertion part 35 of the charging housing 10 with the wire seal S1 interposed therebetween, and the charging terminal T1 ) to prevent separation.

The rear holder 80 includes a first rear holder 81 and a second rear holder 85 . The first holder is coupled to the first insertion part 31 , and the second rear holder 85 is disposed below the first rear holder 81 and coupled to the second insertion part 35 . The first rear holder 81 and the second rear holder 85 may be integrally formed or separate from each other. In this embodiment, the first rear holder 81 and the second rear holder 85 are separate from each other, and the first rear holder 81 and the second rear holder 85 are each composed of two parts. and can be assembled.

Referring to FIG. 3 , a first wire hole 82 through which a charging wire W passes is passed through the first holder body 81a and 81b of the first rear holder 81 , and the first insertion part 31 ) there is a first fastening hook 83 caught on the first fastening jaw 33 . The first holder bodies 81a and 81b have first assembly parts 81a' and 81b', so that the first holder bodies 81a and 81b made of two parts can be assembled with each other. Of course, the first holder body (81a, 81b) may be made of one part.

In addition, the first rear holder 81 has a first fastening slit 84 . The first fastening slit 84 extends along a direction in which the first rear holder 81 is assembled to the first inserting part 31 , and the first fastening ribs 34 of the first inserting part 31 . ) is inserted into the first fastening slit 84 . A plurality of the first fastening slits 84 may be formed in the first rear holder 81 . In this embodiment, a total of four first fastening slits 84 are in the first rear holder 81 . .

The first rear holder 81 has a first sensing hole 84'. The first sensing hole 84 ′ is a hole through which the sensing wire WS connected to the first sensing terminal TS1 described above passes, and the first rear holder 81 is assembled to the first insertion part 31 . direction, and at the same time, in this embodiment, the first sensing hole 84 ′ is also opened toward the side surface of the first rear holder 81 and is connected to the first fastening slit 84 .

A second wire hole 86 through which the charging wire W passes is passed through the second holder body 85a, 85b of the second rear holder 85, and the second insertion part 35 is fastened with the second fastener. There is a second fastening hook 87 caught on the jaw 37 . The second holder bodies 85a and 85b have second assembly parts 85a' and 85b', so that the second holder bodies 85a and 85b made of two parts can be assembled with each other. Of course, the second holder body (85a, 85b) may be made of one part.

In addition, the second rear holder 85 has a second fastening slit 88 . The second fastening slit 88 extends along the direction in which the second rear holder 85 is assembled to the second inserting part 35 , and the second fastening rib 39 of the second inserting part 35 . ) is inserted into the second fastening slit 88 . A plurality of the second fastening slits 88 may be formed in the second rear holder 85 . In this embodiment, a total of four second fastening slits 88 are in the second rear holder 85 . .

The second rear holder 85 has a second sensing hole 88 ′. The second sensing hole 88' is a hole through which the sensing wire WS connected to the above-described second sensing terminal TS2 passes, and in this embodiment, the second sensing hole 88' is the second rear It is open in the lateral direction of the holder 85 . The second sensing hole 88 ′ is connected to the sensing through hole 38 of the second insertion part 35 . Reference numeral B, which is not described, is a bolt for more firmly fixing the second rear holder 85 to the second insertion part 35 . The bolt (B) may be omitted.

Next, a process of assembling the charging connector according to the present invention will be described. First, the operator may assemble the charging terminal T1 and the inner housing 55 before assembling the charging terminal T1 in the charging housing 10 .

Referring to FIG. 7 , the inner housing 55 is inserted into the coupling portion between the charging terminal T1 and the charging wire W. For this purpose, the coupling space 56 of the inner housing 55 is widened. As a result, the coupling body of the inner housing 55 is widened, and the connecting portion of the charging terminal T1 and the charging wire W is inserted into the gaping coupling space 56 .

Then, the wire seal (S1) can be coupled to the charging wire (W), and while the wire seal (S1) passes through the wire hole (S1a) of the wire seal (S1), the wire seal on the charging wire (W) (S1) may be combined. At this time, the wire seal (S1) may be pre-inserted into the charging wire (W), or a periphery of the wire hole (S1a) of the wire seal (S1) is cut to open the wire hole (S1a) to the side for charging. A wire (W) may be inserted.

In this case, as shown in FIG. 6 , the charging terminal T1, the inner housing 55, and the wire seal S1 are in a combined state. In this state, the charging terminal T1 may be inserted through the first insertion part 31 to accommodate the charging terminal T1 in the terminal installation space 32 . In this process, the fixing jaw 52 in the charging terminal T1 is caught by the lance part 32a in the terminal installation space 32 (refer to FIG. 4) so that the charging terminal T1 is connected to the charging housing 10. is fixed first in

And, after all of the charging terminals T1 are assembled in the charging housing 10 through the first inserting part 31 and the second inserting part 35, the sensing terminals TS1 and TS2 are also connected to the charging housing. (10) is assembled. The sensing terminals TS1 and TS2 are for measuring the temperature of the charging terminal T1, and are installed to partially contact the charging terminal T1. When the sensing terminals TS1 and TS2 are inserted into the inner housing 55 , they may naturally pass through the sensor insertion hole 56 ′ of the inner housing 55 .

5, the charging terminal T1 is exposed toward the terminal installation space 32 through the sensor storage space 32c, so that a part of the first sensing terminal TS1 is the sensor It may be in contact with the charging terminal T1 through the receiving space 32c.

When the charging terminal T1 and the sensing terminals TS1 and TS2 are all assembled in the charging housing 10, finally, the first rear holder 81 and the second rear holder 85 in the charging housing 10 are is assembled The first rear holder 81 and the second rear holder 85 are assembled to the first inserting part 31 and the second inserting part 35 of the charging housing 10, respectively, and the assembly is completed.

In this case, since the space where the charging terminal T1 is installed and the space where the sensor is installed are connected to each other, the sensing terminals TS1 and TS2 can directly measure the temperature of the charging terminal T1. Therefore, it is possible to accurately measure the temperature of the charging terminal T1, and through this, there is an effect of more precisely controlling the charging connector.

At this time, in the present embodiment, when the sensing terminals TS1 and TS2 are plugged into the connector in the same manner as the charging terminal T1, the sensing terminals TS1 and TS2 naturally come into contact with the charging terminal T1. Therefore, the operator does not need to adjust the sensor so that the sensing terminals TS1 and TS2 contact the terminals accurately, and assembly workability for sensing can be improved.

In the above, even though all components constituting the embodiment according to the present invention have been described as being combined or operated in combination as one, the present invention is not necessarily limited to this embodiment. That is, within the scope of the object of the present invention, all of the components may operate by selectively combining one or more. In addition, terms such as "include", "comprise" or "have" described above mean that the corresponding component may be inherent unless otherwise stated, so excluding other components Rather, it should be construed as being able to include other components further. All terms, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs, unless otherwise defined. Commonly used terms such as those defined in the dictionary should be interpreted as being consistent with the contextual meaning of the related art, and are not interpreted in an ideal or excessively formal meaning unless explicitly defined in the present invention.

The above description is merely illustrative of the technical spirit of the present invention, and various modifications and variations will be possible without departing from the essential characteristics of the present invention by those skilled in the art to which the present invention pertains. Therefore, the embodiments disclosed in the present invention are not intended to limit the technical spirit of the present invention, but to explain, and the scope of the technical spirit of the present invention is not limited by these embodiments. The protection scope of the present invention should be construed by the following claims, and all technical ideas within the equivalent range should be construed as being included in the scope of the present invention.

10: charging housing 11: housing body
20: charging part 30: terminal insertion part
31: first insertion part 32: first terminal installation space
35: second insertion part 36: second terminal installation space
50: charging terminal 52: fixed jaw
55: inner housing 55': pressure plate
56a: opening 80: rear holder
81: first rear holder 85: second rear holder
S1: wire seal S2: terminal seal
T1: Charging terminal T2: Connection terminal
TS1, TS2: Sensing terminal

Claims (9)

Charging housing with terminal installation space inside;
A charging terminal accommodated in the terminal installation space and having a connection part electrically connected to the other terminal in contact with the other terminal; and
A temperature sensor accommodated in a sensor storage space connected to the terminal installation space and measuring the temperature of the charging terminal; includes,
the temperature sensor
a sensing unit connected to the sensing wire;
and a contact part surrounding the sensing part and in contact with the charging terminal.
The contact portion is a contact spring capable of elastic deformation, and at least a portion of the contact portion protrudes toward the surface of the charging terminal.
The charging connector according to claim 1, wherein the temperature sensor is in direct contact with the surface of the charging terminal through a portion connected between the sensor accommodating space and the terminal installation space.
The charging connector according to claim 1, wherein at least a portion of the temperature sensor protrudes from the sensor accommodating space toward the terminal installation space, and the protruding portion of the temperature sensor contacts the surface of the charging terminal.
delete delete The method according to claim 1, wherein the contact spring has a central portion that protrudes relatively more than the front end and rear end relative to the longitudinal direction of the contact spring, the elastic slit formed along the longitudinal direction of the contact spring is in the circumferential direction of the contact spring. Multiple charging connectors.
The charging connector according to claim 1, wherein a terminal seal is coupled to the body portion of the charging terminal, and the contact portion of the temperature sensor is located opposite to the connection portion of the charging terminal with respect to the terminal seal.
The method according to claim 1, wherein the temperature sensor is inserted into the charging housing in the same direction as the charging terminal in contact with the side of the charging terminal, or the temperature sensor is inserted into the charging housing in a direction orthogonal to the charging terminal, the A charging connector that is in contact with the top or bottom of the charging terminal.
Charging housing with terminal installation space inside;
A charging terminal accommodated in the terminal installation space and electrically connected to the other terminal in contact with the terminal; and
and a temperature sensor assembled in the sensor storage space inside the charging housing and contacting the surface of the charging terminal through a connected portion between the sensor storage space and the terminal installation space.
the temperature sensor
a sensing unit connected to the sensing wire;
and a contact part surrounding the sensing part and in contact with the charging terminal.
The contact portion is a contact spring capable of elastic deformation, and at least a portion of the contact portion protrudes toward the surface of the charging terminal.

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