JP2013020822A - Connector with built-in sensor and connection structure thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a compact connector with a built-in sensor and a connection structure thereof.SOLUTION: A connector 1 with a built-in sensor incorporates three connector terminals 11, and current sensors 12 for detecting current flowing through the connector terminals 11 therein. The current sensor 12 includes a magnetic core 121 and a magnetic detection element 122 arranged around at least two out of the three connector terminals 11. The three connector terminals 11 are disposed so as to be positioned at the vertex of a triangle, respectively, when viewed from the tip side.

Description

  The present invention relates to a sensor built-in connector including three connector terminals and a current sensor for detecting a current flowing through the connector terminal, and a connection structure thereof.

For example, there is a connector provided with three connector terminals as a connector connected to an output terminal of a power converter such as an inverter. That is, a connector having three connector terminals as described above is connected to one end of a cable for electrically connecting the three-phase output bus bar in the power converter to the three electrodes of the three-phase AC rotating electric machine. ing.
In the power conversion device, a current sensor may be provided around two of the three-phase output bus bars in order to measure the output current.

However, when the current sensor is provided in the power converter, there is a problem that the physique of the power converter becomes large. Therefore, it is conceivable to provide a current sensor in the connector.
As the sensor built-in connector in which the current sensor is provided in the connector, there are those disclosed in Patent Documents 1 and 2. In these sensor built-in connectors, the magnetic core and Hall element of the current sensor are arranged around the connector terminal.

Japanese Patent No. 3351502 JP 2009-218121 A

  However, in the sensor built-in connector, three or more connector terminals are arranged in a line. In addition, as described above, since the magnetic core and the Hall element are arranged around the connector terminal, a certain interval between the adjacent connector terminals is also necessary. Therefore, when three or more connector terminals are arranged in a row, the physique of the sensor-incorporated connector becomes large in the arrangement direction, which may make it difficult to reduce the size.

  The present invention has been made in view of such a background, and intends to provide a compact connector with a built-in sensor and a connection structure thereof.

One aspect of the present invention is a sensor-incorporated connector including three connector terminals and a current sensor for detecting a current flowing through the connector terminal,
The current sensor includes a magnetic core and a magnetic detection element disposed around at least two of the three connector terminals,
The three connector terminals are arranged in a sensor built-in connector, characterized in that each of the three connector terminals is located at a vertex of a triangle when viewed from the front end side.

  According to another aspect of the present invention, in the connector connection structure in which the sensor built-in connector is connected to the power converter, the power converter is formed by stacking a plurality of semiconductor modules and a plurality of refrigerant channels. The laminated body is disposed in a case, and the output connector is disposed in a direction orthogonal to the stacking direction of the semiconductor module and the refrigerant flow path, and the case includes the sensor built-in connector with respect to the output connector. The connector connection structure is characterized in that the width in the stacking direction is smaller than the width in the connection direction.

  In the sensor built-in connector, the three connector terminals are arranged so as to be respectively located at the apexes of the triangle when viewed from the front end side. That is, the three connector terminals are not arranged in a line, and the arrangement direction is dispersed in two directions. Therefore, the sensor built-in connector does not increase in size in a specific direction and can be easily made compact.

  In particular, the connector with a built-in sensor includes a current sensor including a magnetic core and a magnetic detection element disposed around the connector terminal. Therefore, if three connector terminals are arranged in a row, the sensor is incorporated in the arrangement direction. Connector dimensions tend to be large. On the other hand, as described above, by arranging the three connector terminals so as to be positioned at the vertices of the triangles without arranging them in a line, even if the current sensor is incorporated, The physique can be made compact.

  As described above, according to the above aspect, a compact sensor built-in connector can be provided.

In the connector connection structure, the width of the case of the power conversion device in the stacking direction is smaller than the width in the connection direction of the sensor built-in connector with respect to the output connector. Therefore, when the width of the sensor-incorporated connector connected to the power converter increases in a specific direction, the ratio of the output connector to the total width in the stacking direction of the case tends to increase. As a result, the degree of freedom in designing the connector connection structure may be reduced. Therefore, as described above, the degree of freedom in designing the connector connection structure can be improved by employing the sensor built-in connector that can be made compact so that the width in the specific direction does not increase. And thereby, the compactness of the connection structure which consists of the said power converter device and the said connector with a built-in sensor connected to this can be achieved easily.
In addition, since the current sensor is built in the sensor built-in connector, the overall physique of the power conversion device and the sensor built-in connector can be made more compact than in the case where the current sensor is arranged in the power conversion device.

  As described above, according to the above aspect, it is possible to provide a compact connection structure for a connector with a built-in sensor.

The front view of the sensor built-in connector seen from the front end side in Example 1. FIG. FIG. 2 is a cross-sectional view taken along line AA in FIG. FIG. 3 is a cross-sectional view taken along line BB in FIG. Explanatory drawing of the power converter device seen from the output connector side in Example 1. FIG. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an explanatory diagram of a power conversion device centering on a semiconductor module and an output bus bar in Embodiment 1. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an explanatory diagram of a power conversion device centering on a semiconductor module and a cooler in Embodiment 1. Explanatory drawing of the power converter device seen from the row direction of the output bus bar in Example 1. FIG. Explanatory drawing of the connector connection structure which connected the sensor built-in connector to the power converter device in Example 1. FIG. The front view of the sensor built-in connector seen from the front end side in Example 2. FIG.

The connector terminal may be made of a metal plate such as copper, for example.
The magnetic core and the magnetic detection element in the current sensor may be arranged around two of the three connector terminals, or arranged around all of the three connector terminals. Also good.

  It is preferable that a circuit board provided with a current sensor circuit for processing an output signal of the current sensor is incorporated. In this case, the wiring distance between the current sensor and the current sensor circuit can be shortened. Thereby, a highly accurate current measurement is realizable.

  Further, it is preferable that a connector terminal having the magnetic core and the magnetic detection element disposed around is disposed closer to the circuit board than the other connector terminals. In this case, the wiring distance between the current sensor and the current sensor circuit can be further shortened, and current measurement with higher accuracy can be realized.

  Further, a signal output connector having a sensor signal terminal for outputting an output signal of the current sensor circuit may be disposed on the circuit board. In this case, since it is not necessary to provide a harness between the circuit board and the signal output connector, the sensor built-in connector can be further reduced in size.

  The circuit board is formed with an interlock circuit for processing a detection signal of the interlock sensor, and an interlock signal terminal for outputting an output signal from the interlock circuit is provided on the signal output connector. It may be built in (Claim 5). In this case, by incorporating the interlock signal terminal together with the sensor signal terminal in the signal output connector, the interlock signal terminal can be provided compactly in the sensor built-in connector. Further, since it is not necessary to provide a harness between the circuit board and the interlock signal terminal, the sensor built-in connector can be further reduced in size.

  In addition, the signal output connector may be directly connected to a signal input connector mounted on a control board in the power conversion device. In this case, it is not necessary to provide a harness between the signal input connector and the control board, and the number of components in the power converter can be reduced.

  Further, one or two of the three connector terminals may protrude toward the tip side from the other connector terminals. In this case, the operation of connecting the three connector terminals to the connection destination terminal can be facilitated. As a result, it is possible to further reduce the size of the connector with a built-in sensor by reducing the interval between the three connector terminals without making the fastening operation difficult.

  The sensor built-in connector may be connected to an output connector that outputs three-phase AC power in the power converter. In this case, the connection structure in which the sensor built-in connector is connected to the power converter can be made compact. Thereby, for example, these mounting spaces in the engine room of the vehicle can be made compact.

  In the connector connection structure, three output bus bars each having three output terminals in the output connector are arranged in parallel to each other, and are orthogonal to both the arrangement direction and the extending direction of the three output bus bars. When viewed from the above, the three output bus bars may have the same arrangement pitch in the main body portion connected to the semiconductor module and the output terminal (claim 10). In this case, the shape of the output bus bar can be simplified, and the manufacturing cost can be reduced. That is, if the output bus bar has a different pitch between the main body portion and the output terminal, it is necessary to bend the three output bus bars in the direction of arrangement, and it is necessary to increase the number of bent portions of the output bus bar. Further, when the arrangement pitch is the same in the main body and the output terminal, it is not necessary to bend in the direction in which at least three output bus bars are arranged. As a result, two of the three output bus bars can be formed in the same shape, the number of parts can be reduced, and the cost can be reduced.

Example 1
The sensor built-in connector and its connection structure according to the embodiment will be described with reference to FIGS.
As shown in FIGS. 1 to 3, the sensor built-in connector 1 of this example includes three connector terminals 11 and a current sensor 12 that detects a current flowing through the connector terminal 11.
The current sensor 12 includes a magnetic core 121 and a magnetic detection element 122 disposed around two of the three connector terminals 11 (11u, 11v, 11w). In this example, a magnetic core 121 and a magnetic detection element 122 are disposed around each of the connector terminals 11u and 11w.
As shown in FIG. 1, the three connector terminals 11 are arranged so as to be located at the apexes of the triangle when viewed from the front end side.

  As the magnetic detection element 122, a Hall element is used. The magnetic core 121 is a substantially annular ferrite core with a part cut away. A magnetic detection element 122 is disposed in a notch in the magnetic core 121. An annular body composed of the magnetic core 121 and the magnetic detection element 122 is disposed so as to surround the connector terminals 11u and 11w.

The sensor built-in connector 1 includes a circuit board 13 including a current sensor circuit that processes an output signal of the current sensor 12. A terminal of the magnetic detection element 122 is connected to the circuit board 13.
Further, the connector terminals 11u and 11w having the magnetic core 121 and the magnetic detection element 122 disposed around are arranged closer to the circuit board 13 than the other connector terminals 11v. That is, when the sensor-incorporated connector 1 is viewed from the front end side, the connector terminals 11u and 11w are arranged in a direction parallel to the circuit board 13 and are arranged on the side close to the circuit board 13. The connector terminal 11v is arranged at a position farther from the circuit board 13 than the connector terminals 11u and 11w.

Here, for convenience, the direction parallel to the circuit board 13 (left and right direction in FIG. 1) when the sensor-incorporated connector 1 is viewed from the front end side is appropriately referred to as a lateral direction, and a direction orthogonal to this (up and down direction in FIG. 1). Direction) is appropriately referred to as a height direction.
The connector terminal 11v is arranged between the connector terminal 11u and the connector terminal 11w in the lateral direction.

Each connector terminal 11 is made of a metal plate such as copper, and is arranged such that the width direction is the lateral direction of the sensor-incorporated connector 1 and the thickness direction is the height direction of the sensor-incorporated connector 1. Therefore, each connector terminal 11 is arranged in parallel to the circuit board 13.
Further, as shown in FIG. 4, of the three connector terminals 11, the connector terminal 11 v protrudes toward the tip side from the other connector terminals 11 u and 11 w.

A signal output connector 14 having a sensor signal terminal 141 for outputting an output signal of the current sensor circuit is disposed on the circuit board 13. The signal output connector 14 is fixed to the surface of the circuit board 13 opposite to the connector terminal 11.
As shown in FIGS. 1 to 3, the sensor built-in connector 1 includes the above-described components including the connector terminal 11 inside a housing 15 made of a substantially rectangular parallelepiped resin. And the housing | casing 15 has the open part 151 which open | released one surface of the rectangular parallelepiped, and the side which this open part 151 faces becomes the front end side of the connector 1 with a built-in sensor. As shown in FIGS. 2 and 3, the three connector terminals 11 and the signal output connector 14 protrude from the opening 151.
Moreover, although the wire harness electrically connected to the connector terminal 11 grade | etc., Is connected to the connector 1 with a built-in sensor, this is abbreviate | omitted in the figure.

The sensor built-in connector 1 of this example is connected to an output connector 220 that outputs three-phase AC power in the power converter 2 as shown in FIGS. 5, 7, and 8. That is, each connector terminal 11 of the sensor built-in connector 1 is connected to the output terminal 22 of the output bus bar 21 in the power converter 2. The power conversion device 2 is mounted on a vehicle and is configured to drive a three-phase AC rotating electrical machine by converting DC power of a DC power source into three-phase AC power. Therefore, the power conversion device 2 includes three output bus bars 21 (21u, 21v, 21w). Output terminals 22 (22u, 22v, 22w) are formed in the respective output bus bars 21.
The three connector terminals 11u, 11v, and 11w in the sensor built-in connector 1 are connected to the three output terminals 22u, 22v, and 22w in the power conversion device 2, respectively.

As shown in FIGS. 6 and 7, the power conversion device 2 includes a power conversion unit 3 including a plurality of semiconductor modules 31 and a control board 4 on which a control circuit that controls switching operations and the like of the plurality of semiconductor modules 31 is formed. And a smoothing capacitor 5 for smoothing the direct current. As shown in FIGS. 4 and 7, the control board 4 and the smoothing capacitor 5 are arranged on both sides in the height direction with the power conversion unit 3 interposed therebetween. The output bus bar 21 is disposed between the smoothing capacitor 5 and the power conversion unit 3. As shown in FIGS. 5 and 7, the three output bus bars 21 are integrated with each other by a resin portion 24 that partially molds them.
5 and 6 are cross-sectional explanatory views of the power conversion device 2 as viewed from the same direction, but the components to be noted are different in the respective drawings, and the configuration other than the components to be noted is omitted. is there.

  As shown in FIG. 6, the power conversion unit 3 includes a cooler 32 that cools the plurality of semiconductor modules 31 from both sides. The cooler 32 includes a plurality of cooling pipes 321 that are alternately stacked with a plurality of semiconductor modules 31. That is, the power conversion unit 3 is configured by a stacked body of a plurality of semiconductor modules 31 and a plurality of refrigerant flow paths (cooling pipes 321). The cooling pipes 321 adjacent to each other in the stacking direction are connected by connecting pipes 322 in the vicinity of both ends, and the refrigerant introduction pipe 331 and the refrigerant discharge pipe 332 are connected to the cooling pipe 321 arranged at one end in the stacking direction. Has been. Two semiconductor modules 31 are sandwiched between a pair of adjacent cooling pipes 321, and these two semiconductor modules 31 are arranged in parallel along the longitudinal direction of the cooling pipe 321.

As shown in FIG. 5, the output bus bar 21 is arranged in parallel to the longitudinal direction of the cooling pipes 321, that is, in parallel to the arrangement direction of two semiconductor modules 31 arranged in parallel between adjacent cooling pipes 321. The main electrode terminals 311 of the two semiconductor modules 31 are connected to the output bus bar 21.
The three output bus bars 21 are arranged in parallel to each other, and are areas connected to the semiconductor module 31, and are arranged on substantially the same plane in the main body 210. Two semiconductor modules 31 are connected to the three output bus bars 21 arranged in this way at the main electrode terminal 311. Each semiconductor module 31 has two main electrode terminals 311 protruding therefrom, one of which is connected to the output bus bar 21 and the other is connected to another bus bar (not shown).

The output bus bar 21 includes an output terminal 22 at one end thereof. As shown in FIGS. 4 and 7, the output terminal 22 is disposed at a position shifted in the height direction with respect to the main body 210 of the output bus bar 21. That is, one end of the output bus bar 21 is bent in a crank shape, and has an upright portion 211 that rises in the plate thickness direction of the main body portion 210, and is bent so as to be parallel to the main body portion 210 from the upright portion 211. Thus, an output terminal 22 is formed.
As shown in FIG. 5, among the three output bus bars 21, the output bus bar 21 v is shorter than the other two output bus bars 21 u and 21 w, and the position of the output terminal 22 v is shorter. It is arranged at a position closer to the main body 210 than the other output terminals 22u, 22w.

  Further, the three output bus bars 21 are arranged in parallel to each other, and when viewed from a direction orthogonal to both the arrangement direction and the extending direction of the three output bus bars 21 as shown in FIG. 21 has the same arrangement pitch in the main body 210 and the output terminal 22.

  As shown in FIGS. 4 to 7, the components of the power conversion device 2 such as the power conversion unit 3, the control board 4, the smoothing capacitor 5, and the output bus bar 21 are accommodated in a case 25 made of, for example, aluminum. An output opening 251 that exposes the output connector 220 is formed on the side surface of the case 25.

As shown in FIGS. 5 and 6, the output connector 220 is disposed in the power conversion device 2 in a direction orthogonal to the stacking direction of the semiconductor module 31 and the refrigerant flow path (cooling pipe 321). In the case 25, the width d2 in the stacking direction is smaller than the width d1 in the connection direction of the sensor-equipped connector 1 with respect to the output connector 220.
Although not shown, the input connector having a pair of input terminals connected to the positive electrode and the negative electrode of the DC power supply (not shown) in the power conversion device 2 is arranged on the same surface as the output connector 220 in the case 25. Has been. The input connector is configured such that another connector connected to the DC power source is inserted from the same direction as the sensor built-in connector 1. The pair of input terminals are arranged in an arrangement direction that coincides with the arrangement direction of the three connector terminals 11 in a plan view shown in FIG. 5, and are arranged on the left side of the connector terminals 11 in FIG.

  As shown in FIGS. 7 and 8, the sensor built-in connector 1 is connected to the output connector 220 of the power converter 2 so that the connector terminal 11 is inserted into the case 25 from the output opening 251. And the three connector terminals 11u, 11v, and 11w in the sensor built-in connector 1 are connected to the output terminals 22u, 22v, and 22w in the output connector 220 of the power converter 2, respectively.

  The output terminals 22 and the connector terminals 11 are formed with insertion holes 221 and 111 for inserting bolts, respectively. Then, the output terminal 22 and the connector terminal 11 are fastened by bolts and nuts (not shown) in a state where the output terminals 22 and the connector terminals 11 are stacked so that the insertion holes 221 and 111 overlap each other.

  Further, the signal output connector 14 in the sensor built-in connector 1 is directly connected to the signal input connector 41 mounted on the control board 4 in the power converter 2. That is, the relative positional relationship between the three output terminals 22 and the signal input connector 41 in the power conversion device 2 is the relative positional relationship between the three connector terminals 11 and the signal output connector 14 in the sensor built-in connector 1. It corresponds to.

  In this state, as shown in FIG. 8, a connector connection structure in which the sensor built-in connector 1 is connected to the power converter 2 is obtained. Then, the signal output connector 14 is connected to the signal input connector 41, whereby the output signal of the current sensor 12 can be output to the control circuit of the power conversion device 2. Thereby, it is comprised so that the information in the electric current in the connector terminal 11, ie, the output current of the power converter device 2, can be fed back to the control circuit and used for the control of the power converter 3.

Next, the function and effect of this example will be described.
In the sensor built-in connector 1, as shown in FIG. 1, the three connector terminals 11 are arranged so as to be located at the vertices of a triangle when viewed from the front end side. That is, the three connector terminals 11 are not arranged in a line, and the arrangement direction is dispersed in two directions. Therefore, the sensor built-in connector 1 does not increase in size in a specific direction and can be easily made compact.

  In particular, since the sensor-incorporated connector 1 includes the current sensor 12 including the magnetic core 121 and the magnetic detection element 122 disposed around the connector terminal 11, if the three connector terminals 11 are arranged in a line, the arrangement is arranged. With respect to the direction, the dimension of the sensor-incorporated connector 1 tends to increase. On the other hand, even if the current sensor 12 is built in by arranging the three connector terminals 11 so as to be positioned at the vertices of the triangle without arranging them in a line as described above, the sensor built-in connector The whole physique can be made compact.

Further, since the sensor built-in connector 1 has the circuit board 13 built-in, the wiring distance between the current sensor 12 and the current sensor circuit (circuit board 13) can be shortened. Thereby, a highly accurate current measurement is realizable.
Further, the connector terminals 12u and 12w having the magnetic core 121 and the magnetic detection element 122 disposed around are arranged closer to the circuit board 13 than the other connector terminals 12v. Thereby, the wiring distance between the current sensor 12 and the current sensor circuit (circuit board 13) can be further shortened, and current measurement with higher accuracy can be realized.

  A signal output connector 14 having a sensor signal terminal 141 is disposed on the circuit board 13. Thereby, since it is not necessary to provide a harness between the circuit board 13 and the signal output connector 14, the sensor built-in connector 1 can be further reduced in size.

  The sensor built-in connector 1 is configured such that the signal output connector 14 is directly connected to the signal input connector 41 mounted on the control board 4 in the power conversion device 2. Thereby, it is not necessary to provide a harness between the signal input connector 41 and the control board 4, and the number of components in the power conversion device 2 can be reduced.

  Further, one of the three connector terminals 11 (connector terminal 11v) protrudes toward the distal end side from the other connector terminals 11u and 11w. Thereby, the operation | work which connects the three connector terminals 11 to the terminal of a connection destination can be made easy. As a result, it is possible to further reduce the size of the sensor-incorporated connector 1 by reducing the interval between the three connector terminals 11 without making the fastening operation difficult.

  The sensor built-in connector 1 is connected to an output connector 220 that outputs three-phase AC power in the power conversion device 2. Thereby, the connection structure which connected the sensor built-in connector 1 to the power converter device 2 can be reduced in size. Thereby, these mounting spaces in the engine room of the vehicle can be made compact.

  In particular, in the case 25 of the power conversion device 2, the width d2 in the stacking direction is smaller than the width d1 in the connection direction of the sensor-equipped connector 1 with respect to the output connector 220. Therefore, if the width of the sensor built-in connector 1 connected to the power conversion device 2 is increased in the specific direction, that is, the lateral direction and in the direction of the width d2, the output connector 220 has a full width in the stacking direction (width d2) in the case 25. ) Tends to increase. As a result, the degree of freedom in designing the connector connection structure may be reduced. Specifically, it is difficult to arrange a space for arranging the pair of input terminals connected to the DC power source described above beside the three output terminals 22.

Therefore, as described above, by adopting the sensor-incorporated connector 1 that can be made compact so that the width in the specific direction (lateral direction) does not increase, the degree of freedom in designing the connector connection structure can be improved. As a result, the connection structure including the power conversion device 2 and the sensor built-in connector 1 connected thereto can be easily made compact.
In addition, since the current sensor 12 is built in the sensor built-in connector 1, it is easy to make the entire physique of the power conversion device 2 and the sensor built-in connector 1 compact compared to the case where the current sensor is arranged in the power conversion device 2. .

  Further, the three output bus bars 21 are arranged in parallel to each other. As shown in FIG. 5, when viewed from the direction orthogonal to both the arrangement direction and the extending direction of the three output bus bars 21, the three output bus bars 21 are arranged. Are the same arrangement pitch in the main body 210 and the output terminal 22. Therefore, the shape of the output bus bar 21 can be simplified, and the manufacturing cost can be reduced. That is, if the output bus bar 21 has a different pitch between the main body 210 and the output terminal 22, it is necessary to bend the three output bus bars 21 in the arrangement direction, and it is necessary to increase the number of bent portions of the output bus bar 21. Further, if the arrangement pitch is the same in the main body 210 and the output terminal 22, it is not necessary to bend the at least three output bus bars 21 in the arrangement direction. As a result, two of the three output bus bars 21 (output bus bars 21u and 21w) can have the same shape, and the types of components can be reduced, thereby reducing costs.

  As described above, according to this example, a compact sensor built-in connector and its connection structure can be provided.

(Example 2)
This example is an example of the sensor built-in connector 1 in which the interlock output terminal 142 is built in the signal output connector 14 as shown in FIG.
The circuit board 13 is formed with an interlock circuit for processing the detection signal of the interlock sensor together with the current sensor circuit. The interlock output terminal 142 is a terminal for outputting an output signal from the interlock circuit.

Here, as the interlock, for example, the operation of the power conversion device 2 can be restricted when the sensor built-in connector 1 is not securely connected to the output connector 220 in the power conversion device 2.
Others are the same as in the first embodiment.

In the case of this example, the interlock signal terminal 142 can be provided in the sensor built-in connector 1 in a compact manner by incorporating the interlock signal terminal 142 in the signal output connector 14 together with the sensor signal terminal 141. Further, since it is not necessary to provide a harness between the circuit board 13 and the interlock signal terminal 142, the sensor built-in connector 1 can be further reduced in size.
In addition, the same effects as those of the first embodiment are obtained.

DESCRIPTION OF SYMBOLS 1 Connector with built-in sensor 11 (11u, 11v, 11w) Connector terminal 12 Current sensor 121 Magnetic core 122 Magnetic detection element 2 Power converter

Claims (10)

A sensor built-in connector incorporating three connector terminals and a current sensor for detecting a current flowing through the connector terminal,
The current sensor includes a magnetic core and a magnetic detection element disposed around at least two of the three connector terminals,
3. The sensor built-in connector, wherein the three connector terminals are arranged so as to be respectively located at the apexes of a triangle when viewed from the front end side.   2. The sensor built-in connector according to claim 1, further comprising a circuit board including a current sensor circuit for processing an output signal of the current sensor.   The connector with a built-in sensor according to claim 2, wherein a connector terminal having the magnetic core and the magnetic detection element arranged around is disposed closer to the circuit board than the other connector terminals. A sensor built-in connector.   4. The sensor built-in connector according to claim 2, wherein a signal output connector having a sensor signal terminal for outputting an output signal of the current sensor circuit is disposed on the circuit board. Sensor built-in connector.   5. The sensor built-in connector according to claim 4, wherein an interlock circuit for processing a detection signal of the interlock sensor is formed on the circuit board, and an interlock for outputting an output signal from the interlock circuit. A sensor built-in connector characterized in that a signal terminal for use is built in the signal output connector.   6. The connector with a built-in sensor according to claim 4, wherein the signal output connector is directly connected to a signal input connector mounted on a control board in the power conversion device. .   The sensor built-in connector according to any one of claims 1 to 6, wherein one or two of the three connector terminals protrude toward the tip side from the other connector terminals. Sensor built-in connector.   The connector with a built-in sensor according to any one of claims 1 to 7, wherein the connector with a built-in sensor is connected to an output connector that outputs three-phase AC power in the power conversion device.   The connector connection structure formed by connecting the connector with a built-in sensor according to claim 8 to the power conversion device, wherein the power conversion device includes a stacked body formed by stacking a plurality of semiconductor modules and a plurality of refrigerant flow paths. The output connector is arranged in a case, and the output connector is arranged in a direction orthogonal to the stacking direction of the semiconductor module and the refrigerant flow path, and the case is connected to the sensor built-in connector with respect to the output connector. A connector connection structure characterized in that the width in the stacking direction is smaller than the width of the connector.   The connector connection structure according to claim 9, wherein three output bus bars each having three output terminals in the output connector are arranged in parallel to each other, and the arrangement direction and the extension direction of the three output bus bars are The connector connection structure characterized in that the three output bus bars have the same arrangement pitch in the main body portion connected to the semiconductor module and the output terminal when viewed from a direction orthogonal to both.

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