WO2021059467A1 - Temperature detection substrate, connector, and power relay device - Google Patents

Temperature detection substrate, connector, and power relay device Download PDF

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Publication number
WO2021059467A1
WO2021059467A1 PCT/JP2019/038094 JP2019038094W WO2021059467A1 WO 2021059467 A1 WO2021059467 A1 WO 2021059467A1 JP 2019038094 W JP2019038094 W JP 2019038094W WO 2021059467 A1 WO2021059467 A1 WO 2021059467A1
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Prior art keywords
connector
terminal
temperature detection
cable
temperature
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PCT/JP2019/038094
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French (fr)
Japanese (ja)
Inventor
智之 藤枝
明春 森
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太平洋工業株式会社
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Application filed by 太平洋工業株式会社 filed Critical 太平洋工業株式会社
Priority to JP2020513674A priority Critical patent/JP6698976B1/en
Priority to PCT/JP2019/038094 priority patent/WO2021059467A1/en
Publication of WO2021059467A1 publication Critical patent/WO2021059467A1/en

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/66—Structural association with built-in electrical component

Definitions

  • the present disclosure relates to a connector provided at the end of a power cable, a temperature detection board housed in the connector, and a power supply relay device.
  • this kind of temperature detection board it is provided in the connector of the charging cable for charging the secondary battery, and the temperature of the connector terminal when the connector terminal of the connector is energized with the mating connector terminal is detected by the temperature sensor. (See, for example, Patent Document 1).
  • the invention of claim 1 made to solve the above problems is accommodated in a connector housing together with a connector terminal connected to the end of a power cable capable of receiving an AC voltage of a line voltage of 200 [V], and is housed in the connector housing.
  • It is a temperature detection board that detects the temperature when the mating connector terminal is energized, has a circuit including a temperature sensor, and can receive an AC voltage of a line voltage of 200 [V] inside the connector housing.
  • a circuit portion arranged at a distance of 3 [mm] or more from the metal body, a metal-free portion formed up to a position 3 [mm] or more away from the circuit portion and having no metal body, and the metal-free portion are sandwiched between the circuit portion.
  • It is a temperature detection substrate provided on the opposite side of the circuit portion, and the connector terminals are overlapped and fixed, and the terminal fixing portion having a laminated structure of a heat transfer metal layer and a resin layer is provided.
  • the temperature detection board 10 of the present embodiment is housed in the connector 20A connected to the end of the charging cable 50.
  • the charging cable 50 is for charging the secondary battery 80 of the electric vehicle 81, for example, as shown in FIG.
  • the connector 20A is provided at one end of the charging cable 50, and is connected to the vehicle-side connector 82 provided in the electric vehicle 81.
  • the other end of the charging cable 50 is provided with a terminal block 20B connected to the power supply 90.
  • the power supply 90 is, for example, a three-phase AC power supply, and has three phase lines 91 that are star-connected (Y-connected), and the line voltage of the star connection is 200 [V]. Then, the connection portion of the phase lines 91 is grounded to the ground GND. Terminal fittings (not shown) are provided at the ends of the three phase lines 91 and the ground GND, and are electrically connected to the terminal block 20B described above.
  • the electric vehicle 81 is provided with a charging circuit 83.
  • the charging circuit 83 is a converter circuit that converts three-phase alternating current into direct current, and the vehicle-side connector 82 is provided with terminal fittings (not shown) connected to three phase lines 84 on the input side thereof. Further, the output side of the charging circuit 83 is connected to the secondary battery 80.
  • the charging cable 50 includes a power supply cable 51 that connects the power supply 90 and the charging circuit 83. Specifically, three power supply cables 51 are provided, and a cutoff switch 30 is connected to an intermediate portion of the power supply cables 51. The cutoff switch 30 is normally held in an on state, and power can be supplied from the power supply 90 to the charging circuit 83 by the power supply cable 51. Then, as shown in FIG. 3, cable terminals 52 are crimped to the ends of the power supply cable 51 on the side opposite to the cutoff switch 30, and are connected to the connector 20A or the terminal block 20B, respectively. Then, the phase line 91 of the power supply 90 and the phase line 83 of the charging circuit 83 are connected to the power supply cable 51 via the connector 20A and the terminal block 20B.
  • the cutoff switch 30 is arranged in the middle of the power supply cable 51 and is normally held in the on state. That is, when the connector 20A is connected to the vehicle-side connector 82, the electric power of the power supply 90 is supplied to the charging circuit 83 via the vehicle-side connector 82 connected to the connector 20A via the power supply cable 51.
  • the charging cable 50 also has a ground cable 51E, and is connected to the ground GND of the power supply 90 and the ground line of the electric vehicle 81 as shown in FIG.
  • a temperature sensor 40 is provided in the connector 20A.
  • the temperature sensor 40 is connected to the signal line 51D, and the temperature signal detected by the temperature sensor 40 is output to the switch control unit 31 via the signal line 51D.
  • the signal line 51D is a shielded cable and is bundled together with the power supply cable 51 and the ground cable 51E (see FIG. 1).
  • the switch control unit 31 When the temperature signal input from the temperature sensor 40 via the signal line 51D is a heat generation abnormality exceeding the reference temperature, the switch control unit 31 gives an abnormality detection signal to the cutoff switch 30 from the switch control unit 31. , The cutoff switch 30 cuts off the power supply cable 51.
  • the switch control unit 31 operates by receiving power from a battery (not shown).
  • the temperature sensor 40, the signal line 51D, the switch control unit 31, the cutoff switch 30, and the power supply cable 51 of the present embodiment constitute the main part of the "power supply relay device" within the scope of the claims.
  • FIG. 3 shows a side view of the connector 20A.
  • the connector 20A is packaged with a resin connector housing 21, and the connector housing 21 is equipped with a connector main body 22, a cable terminal 52 connected to the end of a power supply cable 51, and the temperature sensor 40 described above.
  • the temperature detection substrate 10 is housed.
  • the connector 20A is connected to the vehicle side connector 82, the side facing the vehicle side connector 82 is referred to as the tip side, and the side facing the power supply cable 51 is referred to as the base end side.
  • the connector main body 22 is arranged on the tip end side of the connector housing 21, and includes a resin terminal holding portion 22A and a rectangular parallelepiped-shaped connector terminal 24 protruding from the terminal holding portion 22A toward the base end side. There is.
  • the terminal holding portion 22A includes an insertion hole 23 into which the terminal fitting of the vehicle-side connector 82 is inserted, and when the terminal fitting is inserted, the terminal fitting and the connector terminal 24 are electrically connected.
  • the cable terminal 52 is superposed on the connector terminal 24, and the connector terminal 24 and the cable terminal 52 are electrically connected to each other.
  • the cable terminal 52 and the connector terminal 24 are provided with a first ring portion 52A and a second ring portion 24A penetrating in the vertical direction, respectively, and inside the first ring portion 52A and the second ring portion 24A, respectively. It is fastened together by the bolt 60 passed through.
  • the temperature detection board 10 is stacked on the surface of the connector terminals 24 opposite to the surface on which the cable terminals 52 are stacked.
  • the temperature detection board 10 also has a through hole 10A penetrating in the vertical direction, and is fastened together with the connector terminal 24 and the cable terminal 52 by a bolt 60.
  • the connector main body 22 is also provided with an insertion hole 25A connected to the ground GND of the power supply 90 and a ground connector terminal 25.
  • a ground cable terminal 53 crimped to the end of the ground cable 51E described above is connected to the ground connector terminal 25, and is connected to the ground line of the electric vehicle 81 by connecting the connector 20A and the vehicle side connector 82. ..
  • the temperature detection board 10 includes a temperature sensor 40 and a printed wiring board 19.
  • the printed wiring board 19 has a flat plate shape, and one end side is branched into three projecting pieces 19A extending in parallel, and the other end side is a connecting portion 19B to which the projecting pieces 19A are connected.
  • the direction in which each projecting piece 19A extends is referred to as the "H1 direction".
  • each projecting piece 19A is a terminal fixing portion 11 provided with a through hole 10A to which the connector terminal 24 is fixed.
  • the temperature sensor 40 is mounted near the terminal fixing portion 11 of the stacked printed wiring boards 41.
  • the relay connector 41A is connected to the position near the other end of the printed wiring 41, and the temperature sensor 40 is connected to the signal line 51D via the relay connector 41A (see FIG. 1).
  • the portion sandwiched between the terminal fixing portion 11 and the circuit portion 13 is a metal-free portion 12, which will be described later.
  • FIG. 5 shows the cross-sectional structure of the printed wiring board 19.
  • the printed wiring board 19 has a multi-layer structure, in which a first insulating layer 14, a heat transfer metal layer 15, a second insulating layer 16, and a third insulating layer 17 are sequentially laminated.
  • the first insulating layer 14, the second insulating layer 16 and the third insulating layer 17 are made of an insulator such as resin.
  • the first insulating layer 14 and the third insulating layer 17 constitute an upper surface and a lower surface of the printed wiring board 19, respectively.
  • a printed wiring board 41 is laminated on the upper surface of the first insulating layer 14.
  • the printed wiring board 41 is made of a conductor such as copper.
  • the connector terminal 24 is superposed on the lower surface of the third insulating layer 17.
  • the connector terminals 24 are stacked so as to face the lower surface of the terminal fixing portion 11 of the third insulating layer 17, and do not face the metal-free portion 12.
  • the first insulating layer 14, the second insulating layer 16 and the third insulating layer 17 of the present disclosure correspond to the "resin layer” in the claims, and the printed wiring 41 is the "conductive metal” in the claims. Corresponds to "layer”.
  • the heat transfer metal layer 15 is made of a conductor such as copper.
  • the heat transfer metal layer 15 is laminated between the first insulating layer 14 and the second insulating layer 16.
  • the heat transfer metal layer 15 has a terminal-side heat transfer metal layer 15A arranged at a position facing the connector terminal 24 with the second insulating layer 16 and the third insulating layer 17 interposed therebetween. It is composed of a circuit-side heat transfer metal layer 15B arranged at a position facing the printed wiring 41 with the first insulating layer 14 interposed therebetween. That is, the heat transfer metal layer 15 is provided only in the terminal fixing portion 11 and the circuit portion 13. As a result, the metal-free portion 12 of the temperature detection substrate 10 has no metal. At this time, the width of the metal-free portion 12 in the H1 direction is 3 [mm].
  • the cable terminal 52 overlapped with the connector terminal 24 is also arranged so as not to face the metal-free portion 12 in the thickness direction (see FIG. 3).
  • the temperature sensor 40 is, for example, an integrated (IC) digital temperature sensor. As described above, the temperature sensor 40 is provided for detecting abnormal heat generation of the connector terminal 24 that is electrically connected to the terminal fitting of the vehicle-side connector 82. As shown in FIG. 5, the temperature sensor 40 is laminated on the side opposite to the connector terminal 24 with the printed wiring board 19 interposed therebetween, and is opposite to the connector terminal 24 with the metal-free portion 12 interposed therebetween, that is, the connector terminal. It is arranged at a position 3 [mm] away from 24 in the H1 direction.
  • IC integrated
  • the temperature of the connector terminal 24 is detected by the mounted temperature sensor 50, and the signal is output to the switch control unit 31 via the signal line 51D. Then, when the temperature detected by the temperature sensor 40 is a heat generation abnormality exceeding the reference temperature, an abnormality detection signal is given to the cutoff switch 30 from the switch control unit 31, and the power supply cable 51 is cut off by the cutoff switch 30. To. This makes it possible to prevent an overcurrent from flowing through the power cable due to abnormal heat generation.
  • the temperature sensor 40 needs to accurately detect the temperature of the connector terminal 24, but for that purpose, the temperature sensor 40 is brought into contact with the connector terminal 24 or brought close to the connector terminal 24 to cause the insulation distance to be insufficient. If this happens, a short circuit will occur between the two, so the temperature sensor 40 needs to secure a sufficient insulation distance from the connector terminal 24.
  • a metal-free portion 12 having a width of 3 [mm] is arranged between the circuit portion 13 in which the temperature sensor 40 is arranged and the terminal fixing portion 11 in which the connector terminal 24 is arranged. It has become. As a result, even when an AC voltage with a line voltage of 200 [V] is received from the power supply 90, a sufficient insulation distance is secured between the temperature sensor 40 and the connector terminal 24, and the temperature sensor 40 and the connector terminal 24 are connected to each other. It is possible to prevent dielectric breakdown from occurring between them.
  • the temperature sensor 40 by securing a sufficient insulation distance between the temperature sensor 40 and the connector terminal 24, it becomes difficult for the temperature sensor 40 to detect the heat of the connector terminal 24, and there is a problem that the accuracy of the detected temperature is lowered. ..
  • the heat generated by the connector terminal 24 is difficult to be transferred to the resin layer having low heat conduction, and the temperature sensor 40 is used. It is difficult to detect the heat of the connector terminal 24 through the resin layer.
  • the heat generated by the connector terminal 24 may be dissipated to the cable terminal 52, the power supply cable 51, or the like connected to the connector terminal 24.
  • the heat transfer metal layer 15 is laminated inside the printed wiring board 19.
  • the terminal-side heat transfer metal layer 15A provided on the terminal fixing portion 11 is thermally coupled to the connector terminal 24 through the bolt 60, so that the heat generated by the connector terminal 24 is fixed to the terminal. It is easy to transmit heat to the inside of the portion 11, and it is possible to suppress heat dissipation to a cable or the like.
  • the temperature sensor 40 can detect the temperature of the connector terminal 24 via the heat transferred to the terminal side heat transfer metal layer 15 of the terminal fixing portion 11, and can detect the temperature of the connector terminal 24 of the temperature sensor 40. The accuracy of can be improved.
  • the heat transfer metal layer 15 is also provided in the circuit unit 13. Since the circuit unit 13 is also provided with the heat transfer metal layer 15 (circuit side heat transfer metal layer 15B), the heat of the connector terminal 24 is conducted to the circuit side heat transfer metal layer 15B, so that the circuit unit 13 However, the heat generated by the connector terminal 24 is more easily transferred to the circuit unit 13 than the configuration of only the resin layer, and the temperature sensor 40 can also detect the heat of the connector terminal 24 via the circuit side heat transfer metal layer 15B. Therefore, the accuracy of detecting the temperature of the connector terminal 24 of the temperature sensor 40 can be further improved.
  • the power supply 90 of the embodiment is a three-phase AC power supply
  • the charging cable 50 of the embodiment may be used to connect the two-phase AC power supply and the charging circuit 83.
  • the line voltage of the star connection may be an AC power supply 90 of 100 [V].
  • the cutoff switch 30 may be configured to operate even when an electric leakage occurs to cut off the power supply cable 51, and the cutoff switch 30 may be used for both the heat generation abnormality and the electric leakage abnormality.
  • the charging cable 50 of the above embodiment is designed so that the switch control unit 31 is driven by a battery, but it may be configured to receive power from the outside or the power supply cable 51.
  • an integrated (IC) digital temperature sensor is used as the temperature sensor 40, but it may be, for example, a thermistor or a thermocouple.
  • the terminal fixing portion 11 is composed of the tip portions of the three projecting pieces 19A that are branched in one branch, but the terminals are as shown in the temperature detection board 10P shown in FIG.
  • the fixed portion 11 may be configured not to be branched.
  • the second heat transfer metal layer 15 is made of a conductor such as copper.
  • the heat transfer metal layer 15 is laminated between the first insulating layer 14 and the second insulating layer 16, but may be laminated between the second insulating layer 16 and the third insulating layer 17. .. Further, the second insulating layer 16 does not have to be provided.
  • the heat transfer metal layer 15 is laminated on the printed wiring board 19 by one layer, but two or more layers may be laminated. In this case, an insulating layer made of resin may be laminated between the plurality of heat transfer metal layers 15.
  • the heat transfer metal layer 15 includes the terminal side heat transfer metal layer 15A and the circuit side heat transfer metal layer 15B, but the terminal side heat transfer metal layer 15 It is not necessary to include only the metal layer 15A and not to provide the circuit side heat transfer metal layer 15B in the circuit unit 13.
  • the temperature detection board 10 of the above embodiment has a configuration in which one of the ends of the charging cable 50, which is connected to the electric vehicle 81, is connected to the connector 20A and is connected to the electric vehicle 81 by the connector. However, it may be configured to be connected to the power supply 90 by a connector. In this configuration, the other end of the charging cable 50, which is connected to the power supply 90 by the connector, may also be connected to the connector accommodating the temperature detection board 10 to detect the temperature of the connector terminal.
  • the terminal-side heat transfer metal layer 15A and the circuit-side heat transfer metal layer 15B are exposed on the outer surface of the temperature detection substrate 10, but are not exposed. May be good. As a result, the heat of the heat transfer metal layer 15 is suppressed from being dissipated into the air, and the heat in the air is also suppressed from being transferred to the heat transfer metal layer 15, so that the temperature of the connector terminal 24 is further accurate. It can be detected well.
  • Temperature detection board 11 Terminal fixing part 12 Metal-free part 13 Circuit part 14 First insulating layer (resin layer) 15 Metal layer for heat transfer 15A Metal layer for heat transfer on the terminal side 15B Metal layer for heat transfer on the circuit side 16 Second insulating layer (resin layer) 17 Third insulating layer (resin layer) 21 Connector housing 24 Connector terminal 40 Temperature sensor 50 Charging cable (power cable)

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  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Measuring Temperature Or Quantity Of Heat (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

[Problem] To improve the precision of detection of the temperature of a connector terminal. [Solution] The temperature detection substrate 10 according to the present disclosure is accommodated inside a connector 20A connected to an end of a charging cable 50 for receiving an alternating-current voltage having a line voltage of 200 [V] from a power supply 90. The temperature detection substrate 10 is fixed to a connector terminal 24 of the connector 20A and detects the temperature of the connector terminal 24 by means of a temperature sensor 40. The temperature detection substrate 10 is provided with a metal-free section 12 between a circuit section 13 including the temperature sensor 40 and a terminal fixation section 11 where the connector terminal 24 is fixed, and the temperature sensor 40 and the connector terminal 24 are separated from each other by a distance of 3 [mm]. In addition, a heat-transfer metal layer 15 is layered on the terminal fixation section 11 and the circuit section 13.

Description

温度検出基板、コネクタ及び給電中継装置Temperature detection board, connector and power supply relay device
　本開示は、電力ケーブルの末端に備えられるコネクタ、及びこのコネクタ内に収容される温度検出基板、及び給電中継装置に関する。 The present disclosure relates to a connector provided at the end of a power cable, a temperature detection board housed in the connector, and a power supply relay device.
　従来、この種の温度検出基板として、二次電池を充電するための充電ケーブルのコネクタに備えられ、コネクタのコネクタ端子が相手コネクタ端子と通電しているときのコネクタ端子の温度を温度センサにより検出するものが知られている（例えば、特許文献１参照）。 Conventionally, as this kind of temperature detection board, it is provided in the connector of the charging cable for charging the secondary battery, and the temperature of the connector terminal when the connector terminal of the connector is energized with the mating connector terminal is detected by the temperature sensor. (See, for example, Patent Document 1).
特開２０１０－１１００５５号公報（段落［００１８］、図１）Japanese Unexamined Patent Publication No. 2010-110055 (paragraph [0018], FIG. 1)
　上記した従来の温度検出基板に対して、コネクタ端子の温度を精度よく検出することが求められている。 It is required to accurately detect the temperature of the connector terminal with respect to the above-mentioned conventional temperature detection board.
　上記課題を解決するためになされた請求項１の発明は、線間電圧２００［Ｖ］の交流電圧を受け得る電力ケーブルの末端に接続されるコネクタ端子と共にコネクタハウジングに収容され、前記コネクタ端子と相手コネクタ端子とが通電しているときの温度を検出する温度検出基板であって、温度センサを含む回路を有し、前記コネクタハウジングの内部で線間電圧２００［Ｖ］の交流電圧を受け得る金属体から３［ｍｍ］以上離して配置される回路部と、前記回路部から３［ｍｍ］以上離れた位置まで形成され、金属体を有しない無金属部と、前記無金属部を挟んで前記回路部の反対側に設けられ、前記コネクタ端子が重ねられて固定されると共に伝熱用金属層と樹脂層との積層構造をなした端子固定部と、を備える温度検出基板である。 The invention of claim 1 made to solve the above problems is accommodated in a connector housing together with a connector terminal connected to the end of a power cable capable of receiving an AC voltage of a line voltage of 200 [V], and is housed in the connector housing. It is a temperature detection board that detects the temperature when the mating connector terminal is energized, has a circuit including a temperature sensor, and can receive an AC voltage of a line voltage of 200 [V] inside the connector housing. A circuit portion arranged at a distance of 3 [mm] or more from the metal body, a metal-free portion formed up to a position 3 [mm] or more away from the circuit portion and having no metal body, and the metal-free portion are sandwiched between the circuit portion. It is a temperature detection substrate provided on the opposite side of the circuit portion, and the connector terminals are overlapped and fixed, and the terminal fixing portion having a laminated structure of a heat transfer metal layer and a resin layer is provided.
本発明の一実施形態に係るコネクタの斜視図Perspective view of the connector according to the embodiment of the present invention. 充電ケーブルの概略回路図Schematic circuit diagram of charging cable コネクタの側面図Side view of connector 温度検出基板の斜視図Perspective view of temperature detection board 温度検出基板の側断面図Side sectional view of the temperature detection board 他の実施形態に係る温度検出基板の斜視図Perspective view of the temperature detection substrate according to another embodiment
　［第１実施形態］
　以下、本開示の一実施形態を図１～図５に基づいて説明する。本実施形態の温度検出基板１０は、図１に示されるように、充電ケーブル５０の末端に接続されるコネクタ２０Ａに収容されている。この充電ケーブル５０は、例えば、図２に示されるように、電気自動車８１の二次電池８０を充電するためのものである。コネクタ２０Ａは、充電ケーブル５０の一方の末端に備えられていて、電気自動車８１に備えた車両側コネクタ８２とコネクタ接続される。なお、充電ケーブル５０の他方の末端は、電源９０と接続される端子台２０Ｂが備えられている。 [First Embodiment]
Hereinafter, one embodiment of the present disclosure will be described with reference to FIGS. 1 to 5. As shown in FIG. 1, the temperature detection board 10 of the present embodiment is housed in the connector 20A connected to the end of the charging cable 50. The charging cable 50 is for charging the secondary battery 80 of the electric vehicle 81, for example, as shown in FIG. The connector 20A is provided at one end of the charging cable 50, and is connected to the vehicle-side connector 82 provided in the electric vehicle 81. The other end of the charging cable 50 is provided with a terminal block 20B connected to the power supply 90.
　電源９０は、例えば、三相交流電源であって、スター結線（Ｙ結線）された３つの相ライン９１を有し、スター結線の線間電圧は２００［Ｖ］となっている。そして、それら相ライン９１の結線部分が接地されたグランドＧＮＤになっている。なお、３つの相ライン９１及びグランドＧＮＤの末端には図示しない端子金具が備えられていて、上述した端子台２０Ｂに導通接続されている。 The power supply 90 is, for example, a three-phase AC power supply, and has three phase lines 91 that are star-connected (Y-connected), and the line voltage of the star connection is 200 [V]. Then, the connection portion of the phase lines 91 is grounded to the ground GND. Terminal fittings (not shown) are provided at the ends of the three phase lines 91 and the ground GND, and are electrically connected to the terminal block 20B described above.
　一方、電気自動車８１には、充電回路８３が備えられている。充電回路８３は、三相交流を直流に変換するコンバータ回路であって、その入力側に３つの相ライン８４に接続された図示しない端子金具が車両側コネクタ８２に備えられている。また、充電回路８３の出力側は、二次電池８０に接続されている。 On the other hand, the electric vehicle 81 is provided with a charging circuit 83. The charging circuit 83 is a converter circuit that converts three-phase alternating current into direct current, and the vehicle-side connector 82 is provided with terminal fittings (not shown) connected to three phase lines 84 on the input side thereof. Further, the output side of the charging circuit 83 is connected to the secondary battery 80.
　充電ケーブル５０は、電源９０と、充電回路８３との間を接続する給電ケーブル５１を備える。具体的には、給電ケーブル５１は、３つ備えられていて、それら給電ケーブル５１の途中部分には、遮断スイッチ３０が接続されている。遮断スイッチ３０は、通常はオン状態に保持されて、給電ケーブル５１による電源９０から充電回路８３への給電が可能となっている。そして、給電ケーブル５１のうち、遮断スイッチ３０とは反対側の末端には、図３に示されるように、それぞれケーブル端子５２が圧着され、コネクタ２０Ａ又は端子台２０Ｂに接続されている。そして、電源９０の相ライン９１と、充電回路８３の相ライン８３とが、コネクタ２０Ａ及び端子台２０Ｂを介して給電ケーブル５１と接続されている。 The charging cable 50 includes a power supply cable 51 that connects the power supply 90 and the charging circuit 83. Specifically, three power supply cables 51 are provided, and a cutoff switch 30 is connected to an intermediate portion of the power supply cables 51. The cutoff switch 30 is normally held in an on state, and power can be supplied from the power supply 90 to the charging circuit 83 by the power supply cable 51. Then, as shown in FIG. 3, cable terminals 52 are crimped to the ends of the power supply cable 51 on the side opposite to the cutoff switch 30, and are connected to the connector 20A or the terminal block 20B, respectively. Then, the phase line 91 of the power supply 90 and the phase line 83 of the charging circuit 83 are connected to the power supply cable 51 via the connector 20A and the terminal block 20B.
　遮断スイッチ３０は、上述したように、給電ケーブル５１の途中部分に配置されて、通常はオン状態に保持されている。つまり、コネクタ２０Ａが車両側コネクタ８２に接続されると、給電ケーブル５１を介して、電源９０の電力がコネクタ２０Ａと接続された車両側コネクタ８２を介して充電回路８３に供給される。 As described above, the cutoff switch 30 is arranged in the middle of the power supply cable 51 and is normally held in the on state. That is, when the connector 20A is connected to the vehicle-side connector 82, the electric power of the power supply 90 is supplied to the charging circuit 83 via the vehicle-side connector 82 connected to the connector 20A via the power supply cable 51.
　なお、充電ケーブル５０は、グランド用ケーブル５１Ｅも有していて、図２に示されるように、電源９０のグランドＧＮＤと電気自動車８１のグランドラインに接続されている。 The charging cable 50 also has a ground cable 51E, and is connected to the ground GND of the power supply 90 and the ground line of the electric vehicle 81 as shown in FIG.
　ここで、本実施形態の充電ケーブル５０においては、コネクタ２０Ａが、車両側コネクタ８２との接続の際に、不完全な接続や、空気中の湿気や塵等によるトラッキング現象により、異常な発熱が発生して充電ケーブル５０に過電流が流れる虞がある。そのため、コネクタ２０Ａ内に、図２に示されるように、温度センサ４０が備えられている。温度センサ４０は、信号線５１Ｄに接続され、温度センサ４０が検出した温度信号は、信号線５１Ｄを介してスイッチ制御部３１に出力される。なお、信号線５１Ｄは、シールドケーブルであって、給電ケーブル５１及びグランド用ケーブル５１Ｅと一緒に束ねられている（図１参照）。 Here, in the charging cable 50 of the present embodiment, when the connector 20A is connected to the vehicle side connector 82, abnormal heat generation is generated due to incomplete connection or a tracking phenomenon due to humidity or dust in the air. It may occur and an overcurrent may flow through the charging cable 50. Therefore, as shown in FIG. 2, a temperature sensor 40 is provided in the connector 20A. The temperature sensor 40 is connected to the signal line 51D, and the temperature signal detected by the temperature sensor 40 is output to the switch control unit 31 via the signal line 51D. The signal line 51D is a shielded cable and is bundled together with the power supply cable 51 and the ground cable 51E (see FIG. 1).
　スイッチ制御部３１は、温度センサ４０から信号線５１Ｄを介して入力された温度信号が基準温度を超えた発熱異常であった場合に、スイッチ制御部３１から遮断スイッチ３０に異常検出信号が付与され、遮断スイッチ３０は、給電ケーブル５１を遮断する。なお、スイッチ制御部３１は、図示しない電池から受電して作動している。本実施形態の温度センサ４０、信号線５１Ｄ、スイッチ制御部３１、遮断スイッチ３０、給電ケーブル５１から、特許請求の範囲の「給電中継装置」の主要部が構成されている。 When the temperature signal input from the temperature sensor 40 via the signal line 51D is a heat generation abnormality exceeding the reference temperature, the switch control unit 31 gives an abnormality detection signal to the cutoff switch 30 from the switch control unit 31. , The cutoff switch 30 cuts off the power supply cable 51. The switch control unit 31 operates by receiving power from a battery (not shown). The temperature sensor 40, the signal line 51D, the switch control unit 31, the cutoff switch 30, and the power supply cable 51 of the present embodiment constitute the main part of the "power supply relay device" within the scope of the claims.
　図３には、コネクタ２０Ａの側面図が示されている。コネクタ２０Ａは、樹脂製のコネクタハウジング２１でパッケージされていて、コネクタハウジング２１には、コネクタ本体部２２と、給電ケーブル５１の末端に接続されたケーブル端子５２と、上述した温度センサ４０が実装された温度検出基板１０とが収容されている。なお、コネクタ２０Ａが車両側コネクタ８２と接続されたときに、車両側コネクタ８２を向く側を先端側と呼び、給電ケーブル５１を向く側を基端側と呼ぶこととする。 FIG. 3 shows a side view of the connector 20A. The connector 20A is packaged with a resin connector housing 21, and the connector housing 21 is equipped with a connector main body 22, a cable terminal 52 connected to the end of a power supply cable 51, and the temperature sensor 40 described above. The temperature detection substrate 10 is housed. When the connector 20A is connected to the vehicle side connector 82, the side facing the vehicle side connector 82 is referred to as the tip side, and the side facing the power supply cable 51 is referred to as the base end side.
　コネクタ本体部２２は、コネクタハウジング２１の先端側に配置されていて、樹脂製の端子保持部２２Ａと、端子保持部２２Ａから基端側に向かって突出した直方体形状のコネクタ端子２４とを備えている。端子保持部２２Ａは、車両側コネクタ８２の端子金具が差し込まれる挿入孔２３を備え、端子金具が差し込まれたときに、端子金具とコネクタ端子２４とが電気的に接続される。 The connector main body 22 is arranged on the tip end side of the connector housing 21, and includes a resin terminal holding portion 22A and a rectangular parallelepiped-shaped connector terminal 24 protruding from the terminal holding portion 22A toward the base end side. There is. The terminal holding portion 22A includes an insertion hole 23 into which the terminal fitting of the vehicle-side connector 82 is inserted, and when the terminal fitting is inserted, the terminal fitting and the connector terminal 24 are electrically connected.
　コネクタ端子２４には、ケーブル端子５２が重ねられて、コネクタ端子２４とケーブル端子５２とが電気的に接続される。このとき、ケーブル端子５２及びコネクタ端子２４には、それぞれ上下方向に貫通した第１リング部５２Ａ、第２リング部２４Ａが設けられていて、それら第１リング部５２Ａ、第２リング部２４Ａの内側に通したボルト６０によって共締めされている。 The cable terminal 52 is superposed on the connector terminal 24, and the connector terminal 24 and the cable terminal 52 are electrically connected to each other. At this time, the cable terminal 52 and the connector terminal 24 are provided with a first ring portion 52A and a second ring portion 24A penetrating in the vertical direction, respectively, and inside the first ring portion 52A and the second ring portion 24A, respectively. It is fastened together by the bolt 60 passed through.
　温度検出基板１０は、コネクタ端子２４のうちケーブル端子５２が重ねられた面と反対側の面に重ねられている。温度検出基板１０も、上下方向に貫通した貫通孔１０Ａを備えて、コネクタ端子２４及びケーブル端子５２と共にボルト６０によって共締めされている。 The temperature detection board 10 is stacked on the surface of the connector terminals 24 opposite to the surface on which the cable terminals 52 are stacked. The temperature detection board 10 also has a through hole 10A penetrating in the vertical direction, and is fastened together with the connector terminal 24 and the cable terminal 52 by a bolt 60.
　なお、コネクタ本体部２２には、図１に示されるように、電源９０のグランドＧＮＤに接続される挿入孔２５Ａとグランド用コネクタ端子２５も備えられている。グランド用コネクタ端子２５には上述したグランド用ケーブル５１Ｅの末端に圧着されたグランド用ケーブル端子５３が接続されて、コネクタ２０Ａと車両側コネクタ８２との結合によって電気自動車８１のグランドラインに接続される。 As shown in FIG. 1, the connector main body 22 is also provided with an insertion hole 25A connected to the ground GND of the power supply 90 and a ground connector terminal 25. A ground cable terminal 53 crimped to the end of the ground cable 51E described above is connected to the ground connector terminal 25, and is connected to the ground line of the electric vehicle 81 by connecting the connector 20A and the vehicle side connector 82. ..
　温度検出基板１０は、図４に示されるように、温度センサ４０とプリント配線板１９を備えている。プリント配線板１９は、扁平な板状をなして、一端側は、平行に延びる３つの突片１９Ａに分岐し、他端側はそれら突片１９Ａが連結した連結部１９Ｂとなっている。なお、各突片１９Ａが延びる方向を「Ｈ１方向」と呼ぶこととする。 As shown in FIG. 4, the temperature detection board 10 includes a temperature sensor 40 and a printed wiring board 19. The printed wiring board 19 has a flat plate shape, and one end side is branched into three projecting pieces 19A extending in parallel, and the other end side is a connecting portion 19B to which the projecting pieces 19A are connected. The direction in which each projecting piece 19A extends is referred to as the "H1 direction".
　そして、各突片１９Ａの先端部は、コネクタ端子２４が固定される貫通孔１０Ａが備えられた端子固定部１１となっている。また、温度検出基板１０のうち、各突片１９ＡのＨ１方向の中央部分から他端部までが、温度センサ４０を実装するためのプリント配線４１が積層された回路部１３となっている。温度センサ４０は、積層されたプリント配線４１のうち端子固定部１１の近傍に実装されている。また、プリント配線４１のうち他端寄り位置に中継コネクタ４１Ａが接続されていて、中継コネクタ４１Ａを介して温度センサ４０は信号線５１Ｄと接続される（図１参照）。ここで、端子固定部１１と回路部１３とに挟まれた部分は後述する無金属部１２となっている。 The tip of each projecting piece 19A is a terminal fixing portion 11 provided with a through hole 10A to which the connector terminal 24 is fixed. Further, in the temperature detection board 10, from the central portion to the other end portion of each projecting piece 19A in the H1 direction is a circuit portion 13 in which printed wiring 41 for mounting the temperature sensor 40 is laminated. The temperature sensor 40 is mounted near the terminal fixing portion 11 of the stacked printed wiring boards 41. Further, the relay connector 41A is connected to the position near the other end of the printed wiring 41, and the temperature sensor 40 is connected to the signal line 51D via the relay connector 41A (see FIG. 1). Here, the portion sandwiched between the terminal fixing portion 11 and the circuit portion 13 is a metal-free portion 12, which will be described later.
　図５にプリント配線板１９の断面構造が示されている。プリント配線板１９は、多層構造であって、第１絶縁層１４、伝熱用金属層１５、第２絶縁層１６、第３絶縁層１７が順次積層されている。 FIG. 5 shows the cross-sectional structure of the printed wiring board 19. The printed wiring board 19 has a multi-layer structure, in which a first insulating layer 14, a heat transfer metal layer 15, a second insulating layer 16, and a third insulating layer 17 are sequentially laminated.
　第１絶縁層１４、第２絶縁層１６及び第３絶縁層１７は、樹脂などの絶縁体を素材とする。第１絶縁層１４及び第３絶縁層１７は、それぞれ、プリント配線板１９の上面と下面を構成している。第１絶縁層１４の上面にプリント配線４１が積層されている。プリント配線４１は、銅などの導体を素材とする。一方、第３絶縁層１７の下面に、コネクタ端子２４が重ねられる。ここで、コネクタ端子２４は、第３絶縁層１７のうち端子固定部１１の下面に対向するように重ねられており、無金属部１２とは対向していない。 The first insulating layer 14, the second insulating layer 16 and the third insulating layer 17 are made of an insulator such as resin. The first insulating layer 14 and the third insulating layer 17 constitute an upper surface and a lower surface of the printed wiring board 19, respectively. A printed wiring board 41 is laminated on the upper surface of the first insulating layer 14. The printed wiring board 41 is made of a conductor such as copper. On the other hand, the connector terminal 24 is superposed on the lower surface of the third insulating layer 17. Here, the connector terminals 24 are stacked so as to face the lower surface of the terminal fixing portion 11 of the third insulating layer 17, and do not face the metal-free portion 12.
　また、第１絶縁層１４の上面のうち、端子固定部１１である貫通孔１０Ａの周縁部には、例えば銅からなる保護用金属層１８が積層されていて、ボルト６０が挿通されたときに、ボルト６０のフランジ部６０Ａが保護用金属層１８の上面に重ねられる。 Further, on the upper surface of the first insulating layer 14, when a protective metal layer 18 made of copper, for example, is laminated on the peripheral edge of the through hole 10A which is the terminal fixing portion 11, and the bolt 60 is inserted. , The flange portion 60A of the bolt 60 is superposed on the upper surface of the protective metal layer 18.
　なお、本開示の第１絶縁層１４、第２絶縁層１６及び第３絶縁層１７は、特許請求の範囲の「樹脂層」に相当し、プリント配線４１が特許請求の範囲の「導電用金属層」に相当する。 The first insulating layer 14, the second insulating layer 16 and the third insulating layer 17 of the present disclosure correspond to the "resin layer" in the claims, and the printed wiring 41 is the "conductive metal" in the claims. Corresponds to "layer".
　伝熱用金属層１５は、銅などの導体を素材とする。伝熱用金属層１５は、第１絶縁層１４と第２絶縁層１６との間に積層されている。伝熱用金属層１５は、図５に示されるように、第２絶縁層１６及び第３絶縁層１７を挟んでコネクタ端子２４と対向する位置に配置された端子側伝熱用金属層１５Ａと、第１絶縁層１４を挟んでプリント配線４１と対向する位置に配置された回路側伝熱用金属層１５Ｂとからなる。つまり、伝熱用金属層１５は、端子固定部１１と回路部１３にのみ備えられている。これにより、温度検出基板１０の無金属部１２は、金属を有しない構成となっている。このとき、無金属部１２のＨ１方向の幅は３［ｍｍ］となっている。なお、コネクタ端子２４に重ねられるケーブル端子５２も無金属部１２と厚み方向で対向しないように配置されている（図３参照）。 The heat transfer metal layer 15 is made of a conductor such as copper. The heat transfer metal layer 15 is laminated between the first insulating layer 14 and the second insulating layer 16. As shown in FIG. 5, the heat transfer metal layer 15 has a terminal-side heat transfer metal layer 15A arranged at a position facing the connector terminal 24 with the second insulating layer 16 and the third insulating layer 17 interposed therebetween. It is composed of a circuit-side heat transfer metal layer 15B arranged at a position facing the printed wiring 41 with the first insulating layer 14 interposed therebetween. That is, the heat transfer metal layer 15 is provided only in the terminal fixing portion 11 and the circuit portion 13. As a result, the metal-free portion 12 of the temperature detection substrate 10 has no metal. At this time, the width of the metal-free portion 12 in the H1 direction is 3 [mm]. The cable terminal 52 overlapped with the connector terminal 24 is also arranged so as not to face the metal-free portion 12 in the thickness direction (see FIG. 3).
　温度センサ４０は、例えば、集積化（ＩＣ）されたデジタル温度センサである。温度センサ４０は、上述したように、車両側コネクタ８２の端子金具と電気的に接続するコネクタ端子２４の異常な発熱を検出するために備えられている。図５に示されるように、温度センサ４０は、プリント配線板１９を挟んでコネクタ端子２４と反対側に積層されると共に、無金属部１２を挟んでコネクタ端子２４と反対側、すなわち、コネクタ端子２４からＨ１方向で３［ｍｍ］離れた位置に配置されている。 The temperature sensor 40 is, for example, an integrated (IC) digital temperature sensor. As described above, the temperature sensor 40 is provided for detecting abnormal heat generation of the connector terminal 24 that is electrically connected to the terminal fitting of the vehicle-side connector 82. As shown in FIG. 5, the temperature sensor 40 is laminated on the side opposite to the connector terminal 24 with the printed wiring board 19 interposed therebetween, and is opposite to the connector terminal 24 with the metal-free portion 12 interposed therebetween, that is, the connector terminal. It is arranged at a position 3 [mm] away from 24 in the H1 direction.
　本実施形態の温度検出基板１０の構成に関する説明は以上である。上述したように、この温度検出基板１０によれば、実装された温度センサ５０によりコネクタ端子２４の温度が検出され、その信号を信号線５１Ｄを介してスイッチ制御部３１に出力される。そして、温度センサ４０の検出した温度が基準温度を超えた発熱異常であった場合に、スイッチ制御部３１から遮断スイッチ３０に異常検出信号が付与され、遮断スイッチ３０により、給電ケーブル５１が遮断される。これにより、異常な発熱によって電力ケーブルに過電流が流れることを防止することができる。 This concludes the description of the configuration of the temperature detection substrate 10 of this embodiment. As described above, according to the temperature detection board 10, the temperature of the connector terminal 24 is detected by the mounted temperature sensor 50, and the signal is output to the switch control unit 31 via the signal line 51D. Then, when the temperature detected by the temperature sensor 40 is a heat generation abnormality exceeding the reference temperature, an abnormality detection signal is given to the cutoff switch 30 from the switch control unit 31, and the power supply cable 51 is cut off by the cutoff switch 30. To. This makes it possible to prevent an overcurrent from flowing through the power cable due to abnormal heat generation.
　ここで、温度センサ４０は、コネクタ端子２４の温度を精度よく検出する必要があるが、そのために温度センサ４０をコネクタ端子２４に接触させたり、コネクタ端子２４に接近させて絶縁距離が不足しさせてしまうと、両者間で短絡が生じるため、温度センサ４０はコネクタ端子２４との間に十分な絶縁距離を確保する必要がある。 Here, the temperature sensor 40 needs to accurately detect the temperature of the connector terminal 24, but for that purpose, the temperature sensor 40 is brought into contact with the connector terminal 24 or brought close to the connector terminal 24 to cause the insulation distance to be insufficient. If this happens, a short circuit will occur between the two, so the temperature sensor 40 needs to secure a sufficient insulation distance from the connector terminal 24.
　本実施形態の温度検出基板１０では、温度センサ４０を配置した回路部１３とコネクタ端子２４を配置した端子固定部１１との間に３［ｍｍ］の幅を有する無金属部１２を配置した構成となっている。これにより、電源９０から線間電圧２００［Ｖ］の交流電圧を受けた場合でも、温度センサ４０とコネクタ端子２４との間に十分な絶縁距離を確保し、温度センサ４０とコネクタ端子２４との間で絶縁破壊が生じることを防ぐことができる。 In the temperature detection board 10 of the present embodiment, a metal-free portion 12 having a width of 3 [mm] is arranged between the circuit portion 13 in which the temperature sensor 40 is arranged and the terminal fixing portion 11 in which the connector terminal 24 is arranged. It has become. As a result, even when an AC voltage with a line voltage of 200 [V] is received from the power supply 90, a sufficient insulation distance is secured between the temperature sensor 40 and the connector terminal 24, and the temperature sensor 40 and the connector terminal 24 are connected to each other. It is possible to prevent dielectric breakdown from occurring between them.
　ここで、温度センサ４０とコネクタ端子２４との間に十分な絶縁距離を確保することで、温度センサ４０がコネクタ端子２４の熱を検出しづらくなり、検出温度の精度が低下するという問題がある。さらに、プリント配線板１９が伝熱用金属層１５を備えない樹脂層だけで構成された従来の構成では、コネクタ端子２４の発する熱は熱伝導の低い樹脂層には伝わりにくく、温度センサ４０が樹脂層を介してコネクタ端子２４の熱を検出することは困難である。しかも、コネクタ端子２４の発する熱は、コネクタ端子２４に接続されたケーブル端子５２や給電ケーブル５１等に放熱してしまうこともある。 Here, by securing a sufficient insulation distance between the temperature sensor 40 and the connector terminal 24, it becomes difficult for the temperature sensor 40 to detect the heat of the connector terminal 24, and there is a problem that the accuracy of the detected temperature is lowered. .. Further, in the conventional configuration in which the printed wiring board 19 is composed of only a resin layer not provided with the heat transfer metal layer 15, the heat generated by the connector terminal 24 is difficult to be transferred to the resin layer having low heat conduction, and the temperature sensor 40 is used. It is difficult to detect the heat of the connector terminal 24 through the resin layer. Moreover, the heat generated by the connector terminal 24 may be dissipated to the cable terminal 52, the power supply cable 51, or the like connected to the connector terminal 24.
　これに対して、本実施形態の温度検出基板１０では、プリント配線板１９の内部に伝熱用金属層１５が積層されている。伝熱用金属層１５のうち端子固定部１１に設けられた端子側伝熱用金属層１５Ａは、ボルト６０を通じてコネクタ端子２４と熱的に結合されるので、コネクタ端子２４の発する熱が端子固定部１１内部に伝わりやすくなると共に、ケーブル等に放熱することも抑えることができる。これにより、温度センサ４０が端子固定部１１の端子側伝熱用金属層１５に伝わった熱を介してコネクタ端子２４の温度を検出することができ、温度センサ４０のコネクタ端子２４の温度の検出の精度を向上させることができる。 On the other hand, in the temperature detection board 10 of the present embodiment, the heat transfer metal layer 15 is laminated inside the printed wiring board 19. Of the heat transfer metal layer 15, the terminal-side heat transfer metal layer 15A provided on the terminal fixing portion 11 is thermally coupled to the connector terminal 24 through the bolt 60, so that the heat generated by the connector terminal 24 is fixed to the terminal. It is easy to transmit heat to the inside of the portion 11, and it is possible to suppress heat dissipation to a cable or the like. As a result, the temperature sensor 40 can detect the temperature of the connector terminal 24 via the heat transferred to the terminal side heat transfer metal layer 15 of the terminal fixing portion 11, and can detect the temperature of the connector terminal 24 of the temperature sensor 40. The accuracy of can be improved.
　また、本実施形態では、伝熱用金属層１５は、回路部１３にも備えられている。回路部１３にも伝熱用金属層１５（回路側伝熱用金属層１５Ｂ）が備えられることで、コネクタ端子２４の熱が回路側伝熱用金属層１５Ｂに伝導されるので、回路部１３が樹脂層だけの構成よりもコネクタ端子２４の発する熱が回路部１３に伝わりやすくなり、温度センサ４０は、回路側伝熱用金属層１５Ｂを介してコネクタ端子２４の熱を検出することも可能となり、温度センサ４０のコネクタ端子２４の温度の検出の精度をさらに向上させることができる。 Further, in the present embodiment, the heat transfer metal layer 15 is also provided in the circuit unit 13. Since the circuit unit 13 is also provided with the heat transfer metal layer 15 (circuit side heat transfer metal layer 15B), the heat of the connector terminal 24 is conducted to the circuit side heat transfer metal layer 15B, so that the circuit unit 13 However, the heat generated by the connector terminal 24 is more easily transferred to the circuit unit 13 than the configuration of only the resin layer, and the temperature sensor 40 can also detect the heat of the connector terminal 24 via the circuit side heat transfer metal layer 15B. Therefore, the accuracy of detecting the temperature of the connector terminal 24 of the temperature sensor 40 can be further improved.
　しかも、伝熱用金属層１５は、第１絶縁層１４と第２絶縁層１６との間に挟まれた構成となっているので、伝熱用金属層１５に伝えられた熱が空気中に放熱されることが抑制され、温度センサ４０に精度よくコネクタ端子２４の温度を検出させることができる。
　［他の実施形態］ Moreover, since the heat transfer metal layer 15 is sandwiched between the first insulating layer 14 and the second insulating layer 16, the heat transferred to the heat transfer metal layer 15 is introduced into the air. Heat dissipation is suppressed, and the temperature sensor 40 can accurately detect the temperature of the connector terminal 24.
[Other Embodiments]
（１）前記実施形態の電源９０は、三相交流電源であったが、二相交流電源と充電回路８３との間を前記実施形態の充電ケーブル５０で接続してもよい。また、スター結線の線間電圧は１００［Ｖ］の交流電源９０であってもよい。 (1) Although the power supply 90 of the embodiment is a three-phase AC power supply, the charging cable 50 of the embodiment may be used to connect the two-phase AC power supply and the charging circuit 83. Further, the line voltage of the star connection may be an AC power supply 90 of 100 [V].
（２）遮断スイッチ３０を漏電発生時にも作動して給電ケーブル５１を遮断する構成にして、発熱異常と漏電の両方の異常に遮断スイッチ３０を兼用する構成にしてもよい。 (2) The cutoff switch 30 may be configured to operate even when an electric leakage occurs to cut off the power supply cable 51, and the cutoff switch 30 may be used for both the heat generation abnormality and the electric leakage abnormality.
（３）前記実施形態の充電ケーブル５０は、電池でスイッチ制御部３１が駆動されるようになっていたが、外部又は給電ケーブル５１から受電する構成としてもよい。 (3) The charging cable 50 of the above embodiment is designed so that the switch control unit 31 is driven by a battery, but it may be configured to receive power from the outside or the power supply cable 51.
（４）前記実施形態の充電ケーブル５０では、温度センサ４０として集積化（ＩＣ）されたデジタル温度センサを用いていたが、例えば、サーミスタ又は熱電対であってもよい。 (4) In the charging cable 50 of the above embodiment, an integrated (IC) digital temperature sensor is used as the temperature sensor 40, but it may be, for example, a thermistor or a thermocouple.
（５）前記実施形態の温度検出基板１０では、端子固定部１１が一分岐した３つの突片１９Ａの先端部で構成されていたが、図６に示される温度検出基板１０Ｐのように、端子固定部１１が分岐していない構成であってもよい。 (5) In the temperature detection board 10 of the above embodiment, the terminal fixing portion 11 is composed of the tip portions of the three projecting pieces 19A that are branched in one branch, but the terminals are as shown in the temperature detection board 10P shown in FIG. The fixed portion 11 may be configured not to be branched.
（６）前記実施形態の温度検出基板１０では、第２伝熱用金属層１５は、銅などの導体を素材とする。伝熱用金属層１５は、第１絶縁層１４と第２絶縁層１６との間に積層されていたが、第２絶縁層１６と第３絶縁層１７との間に積層されていてもよい。また、第２絶縁層１６を備えなくてもよい。 (6) In the temperature detection substrate 10 of the above embodiment, the second heat transfer metal layer 15 is made of a conductor such as copper. The heat transfer metal layer 15 is laminated between the first insulating layer 14 and the second insulating layer 16, but may be laminated between the second insulating layer 16 and the third insulating layer 17. .. Further, the second insulating layer 16 does not have to be provided.
（７）前記実施形態の温度検出基板１０では、伝熱用金属層１５は、プリント配線板１９に１層積層されていたが、２層以上積層されていてもよい。この場合、複数の伝熱用金属層１５の間に樹脂からなる絶縁層が積層されていてもよい。 (7) In the temperature detection board 10 of the above-described embodiment, the heat transfer metal layer 15 is laminated on the printed wiring board 19 by one layer, but two or more layers may be laminated. In this case, an insulating layer made of resin may be laminated between the plurality of heat transfer metal layers 15.
（８）前記実施形態の温度検出基板１０では、伝熱用金属層１５は、端子側伝熱用金属層１５Ａと回路側伝熱用金属層１５Ｂとを備えていたが、端子側伝熱用金属層１５Ａだけを備えて、回路部１３に回路側伝熱用金属層１５Ｂを備えていなくてもよい。 (8) In the temperature detection substrate 10 of the above embodiment, the heat transfer metal layer 15 includes the terminal side heat transfer metal layer 15A and the circuit side heat transfer metal layer 15B, but the terminal side heat transfer metal layer 15 It is not necessary to include only the metal layer 15A and not to provide the circuit side heat transfer metal layer 15B in the circuit unit 13.
（９）前記実施形態の温度検出基板１０では、充電ケーブル５０の末端のうち、電気自動車８１に接続される一方の末端がコネクタ２０Ａに接続されて、電気自動車８１とコネクタ接続される構成であったが、電源９０ともコネクタ接続される構成であってもよい。この構成では、充電ケーブル５０の末端のうち、電源９０とコネクタ接続される他方の末端も温度検出基板１０を収容したコネクタに接続されて、コネクタ端子の温度を検出する構成としてもよい。 (9) The temperature detection board 10 of the above embodiment has a configuration in which one of the ends of the charging cable 50, which is connected to the electric vehicle 81, is connected to the connector 20A and is connected to the electric vehicle 81 by the connector. However, it may be configured to be connected to the power supply 90 by a connector. In this configuration, the other end of the charging cable 50, which is connected to the power supply 90 by the connector, may also be connected to the connector accommodating the temperature detection board 10 to detect the temperature of the connector terminal.
（１０）前記実施形態の温度検出基板１０では、端子側伝熱用金属層１５Ａ及び回路側伝熱用金属層１５Ｂは、温度検出基板１０の外側面に露出していたが、露出しない構成としてもよい。これにより、伝熱用金属層１５の熱が空気中に放熱されることを抑制すると共に、空気中の熱が伝熱用金属層１５に伝わることも抑制し、コネクタ端子２４の温度をさらに精度よく検出することができる。 (10) In the temperature detection substrate 10 of the above-described embodiment, the terminal-side heat transfer metal layer 15A and the circuit-side heat transfer metal layer 15B are exposed on the outer surface of the temperature detection substrate 10, but are not exposed. May be good. As a result, the heat of the heat transfer metal layer 15 is suppressed from being dissipated into the air, and the heat in the air is also suppressed from being transferred to the heat transfer metal layer 15, so that the temperature of the connector terminal 24 is further accurate. It can be detected well.
　１０　　温度検出基板
　１１　　端子固定部
　１２　　無金属部
　１３　　回路部
　１４　　第１絶縁層（樹脂層）
　１５　　伝熱用金属層
　１５Ａ　端子側伝熱用金属層
　１５Ｂ　回路側伝熱用金属層
　１６　　第２絶縁層（樹脂層）
　１７　　第３絶縁層（樹脂層）
　２１　　コネクタハウジング
　２４　　コネクタ端子
　４０　　温度センサ
　５０　　充電ケーブル（電力ケーブル） 10 Temperature detection board 11 Terminal fixing part 12 Metal-free part 13 Circuit part 14 First insulating layer (resin layer)
15 Metal layer for heat transfer 15A Metal layer for heat transfer on the terminal side 15B Metal layer for heat transfer on the circuit side 16 Second insulating layer (resin layer)
17 Third insulating layer (resin layer)
21 Connector housing 24 Connector terminal 40 Temperature sensor 50 Charging cable (power cable)

Claims (7)

  1. 　線間電圧２００［Ｖ］の交流電圧を受け得る電力ケーブルの末端に接続されるコネクタ端子と共にコネクタハウジングに収容され、前記コネクタ端子と相手コネクタ端子とが通電しているときの温度を検出する温度検出基板であって、
    　温度センサを含む回路を有し、前記コネクタハウジングの内部で線間電圧２００［Ｖ］の交流電圧を受け得る金属体から３［ｍｍ］以上離して配置される回路部と、
    　前記回路部から３［ｍｍ］以上離れた位置まで形成され、金属体を有しない無金属部と、
    　前記無金属部を挟んで前記回路部の反対側に設けられ、前記コネクタ端子が重ねられて固定されると共に伝熱用金属層と樹脂層との積層構造をなした端子固定部と、を備える温度検出基板。     A temperature that is housed in a connector housing together with a connector terminal connected to the end of a power cable that can receive an AC voltage with a line voltage of 200 [V], and detects the temperature when the connector terminal and the mating connector terminal are energized. It is a detection board
    A circuit unit having a circuit including a temperature sensor and arranged inside the connector housing at a distance of 3 [mm] or more from a metal body capable of receiving an AC voltage of a line voltage of 200 [V].
    A metal-free portion formed to a position separated from the circuit portion by 3 [mm] or more and having no metal body, and a metal-free portion.
    The connector terminal is provided on the opposite side of the circuit portion with the metal-free portion interposed therebetween, and the connector terminal is overlapped and fixed, and the terminal fixing portion having a laminated structure of a heat transfer metal layer and a resin layer is provided. Temperature detection board.
  2. 　前記回路部は、前記伝熱用金属層と導電用金属層と前記樹脂層との積層構造をなしている請求項１に記載の温度検出基板。 The temperature detection substrate according to claim 1, wherein the circuit unit has a laminated structure of the heat transfer metal layer, the conductive metal layer, and the resin layer.
  3. 　前記伝熱用金属層は、前記樹脂層の間に挟まれている請求項１又は２に記載の温度検出基板。 The temperature detection substrate according to claim 1 or 2, wherein the heat transfer metal layer is sandwiched between the resin layers.
  4. 　前記樹脂層に挟まれている前記伝熱用金属層は、温度検出基板の外側面に露出していない請求項３に記載の温度検出基板。 The temperature detection substrate according to claim 3, wherein the heat transfer metal layer sandwiched between the resin layers is not exposed on the outer surface of the temperature detection substrate.
  5. 　平行に延びる複数の突片を有し、前記複数の突片の先端部が前記端子固定部になっている請求項１乃至４の何れか１の請求項に記載の温度検出基板。 The temperature detection substrate according to any one of claims 1 to 4, which has a plurality of projecting pieces extending in parallel, and the tip portions of the plurality of projecting pieces form the terminal fixing portion.
  6. 　請求項１乃至５の何れか１の請求項に記載の温度検出基板を内蔵するコネクタであって、
    　前記電力ケーブルの末端に固定されるケーブル端子と、
    　前記ケーブル端子の先端部に設けられる第１リング部と、
    　前記コネクタ端子の基端部に設けられる第２リング部と、
    　前記端子固定部を貫通する貫通孔と、
    　前記第１リング部及び前記第２リング部の内側と前記貫通孔とを貫通し、前記第１リング部及び前記第２リング部と前記端子固定部とを重ねた状態に固定する連結部材と、を有するコネクタ。     A connector incorporating the temperature detection board according to any one of claims 1 to 5.
    A cable terminal fixed to the end of the power cable,
    A first ring portion provided at the tip of the cable terminal and
    A second ring portion provided at the base end portion of the connector terminal and
    A through hole penetrating the terminal fixing portion and
    A connecting member that penetrates the inside of the first ring portion and the second ring portion and the through hole, and fixes the first ring portion, the second ring portion, and the terminal fixing portion in a superposed state. Connector with.
  7. 　請求項６に記載のコネクタと、
    　前記コネクタ端子に接続される電力ケーブルと、
    　前記電力ケーブルの途中に設けられるスイッチと、
    　前記スイッチを通常はオン状態に維持し、異常時に前記スイッチをオフして前記電力ケーブルを断絶させるスイッチ制御部と、
    　前記温度検出基板の前記回路と前記スイッチ制御部との間を接続するシールドケーブルである信号ケーブルと、を備える給電中継装置。     The connector according to claim 6 and
    The power cable connected to the connector terminal and
    A switch provided in the middle of the power cable and
    A switch control unit that normally keeps the switch on and turns off the switch to disconnect the power cable in the event of an abnormality.
    A power supply relay device including a signal cable which is a shielded cable for connecting the circuit of the temperature detection board and the switch control unit.
PCT/JP2019/038094 2019-09-27 2019-09-27 Temperature detection substrate, connector, and power relay device WO2021059467A1 (en)

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JP2017076487A (en) * 2015-10-14 2017-04-20 ホシデン株式会社 Plug connector and adaptor
JP2017101642A (en) * 2015-12-04 2017-06-08 トヨタ自動車株式会社 Exhaust emission control device
US20180097316A1 (en) * 2015-04-23 2018-04-05 Phoenix Contact E-Mobility Gmbh Plug connector part having a temperature-monitoring device

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Publication number Priority date Publication date Assignee Title
WO2012139778A2 (en) * 2011-04-15 2012-10-18 Nissan Motor Co., Ltd. Improvements in electrical connections
US20140029928A1 (en) * 2012-07-30 2014-01-30 E.G.O. Elektro-Geraetebau Gmbh Heating device and electric appliance with heating device
US20180097316A1 (en) * 2015-04-23 2018-04-05 Phoenix Contact E-Mobility Gmbh Plug connector part having a temperature-monitoring device
JP2017076487A (en) * 2015-10-14 2017-04-20 ホシデン株式会社 Plug connector and adaptor
JP2017101642A (en) * 2015-12-04 2017-06-08 トヨタ自動車株式会社 Exhaust emission control device

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