JP5807811B2 - Temperature sensor device - Google Patents

Temperature sensor device Download PDF

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JP5807811B2
JP5807811B2 JP2011288202A JP2011288202A JP5807811B2 JP 5807811 B2 JP5807811 B2 JP 5807811B2 JP 2011288202 A JP2011288202 A JP 2011288202A JP 2011288202 A JP2011288202 A JP 2011288202A JP 5807811 B2 JP5807811 B2 JP 5807811B2
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protective member
temperature sensor
sensor device
mounting hole
cylindrical
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JP2013137232A (en
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山本　憲治
憲治 山本
保隆 前田
保隆 前田
小林　功
功 小林
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Mitsubishi Materials Corp
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
    • G01K1/14—Supports; Fastening devices; Arrangements for mounting thermometers in particular locations
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
    • H01M10/486—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for measuring temperature
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
    • G01K1/16—Special arrangements for conducting heat from the object to the sensitive element
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Temperature Or Quantity Of Heat (AREA)
  • Secondary Cells (AREA)

Description

本発明は、ハイブリッド車や電気自動車のバッテリ温度検知等に好適な温度センサ装置に関するものである。   The present invention relates to a temperature sensor device suitable for detecting a battery temperature of a hybrid vehicle or an electric vehicle.

近年、内燃機関とモーターとを組み合わせて優れた低燃費性能を有するハイブリッド車やモーターのみで駆動される電気自動車が開発及び実用化されている。これらのハイブリッド車や電気自動車には、モーター駆動のためにバッテリが搭載されているが、該バッテリの性能を良好に維持するため、バッテリの温度を検知して温度管理を行っている（特許文献１参照）。   In recent years, a hybrid vehicle having an excellent fuel efficiency performance by combining an internal combustion engine and a motor and an electric vehicle driven only by the motor have been developed and put into practical use. In these hybrid vehicles and electric vehicles, a battery is mounted for driving the motor. In order to maintain the performance of the battery well, the temperature of the battery is detected and temperature management is performed (Patent Literature). 1).

このバッテリの温度を検知する温度センサとしては、従来、例えば特許文献２には、バッテリーセル等の被検体に接触又は近接するように配置される樹脂製のハウジング部を有するセンサ本体と、当該ハウジング部の内部に配設され、かつ被検体からハウジング部の内部に伝達される熱の温度に応じた検出信号を出力するサーミスタ（測温素子）と、被検体とサーミスタとの間に位置するようにハウジング部に設けられた、サーミスタへの熱の伝達効率を高めるための金属製の熱伝達向上部材とを備えた温度センサが記載されている。   Conventionally, as a temperature sensor for detecting the temperature of the battery, for example, in Patent Document 2, a sensor main body having a resin-made housing portion disposed so as to be in contact with or close to a subject such as a battery cell, and the housing A thermistor (temperature measuring element) that is disposed inside the unit and outputs a detection signal corresponding to the temperature of heat transferred from the subject to the inside of the housing, and is located between the subject and the thermistor Describes a temperature sensor provided with a metal heat transfer improving member provided in the housing portion for increasing the efficiency of heat transfer to the thermistor.

特開２００７−１１２２６８号公報JP 2007-112268 A 特開２００９−２５０７６８号公報JP 2009-250768 A

上記従来の技術には、以下の課題が残されている。
バッテリ等に設けられたセンサ取付孔を介してバッテリの内部温度を測定する場合、センサ取付孔にサーミスタ等の感熱素子を挿入して測定を行う必要がある。しかしながら、サーミスタ単体をセンサ取付孔内に直接挿入すると、サーミスタを確実に固定することが困難である。このため、上記特許文献２に記載の温度センサのように、ハウジング部を用いてセンサ取付孔に取り付ける必要がある。しかしながら、センサ取付孔と内部のバッテリ等の測定対象に設けた測定用穴とが若干位置ずれして設置されてしまった場合や、振動や変動により互いの位置や間隔が変化してしまう場合、さらにセンサ取付孔が傾いて形成されている場合等が生じることがある。このとき上記特許文献２に記載の温度センサでは、周囲を金属製の熱伝達向上部材が覆っているサーミスタ部分を、センサ取付孔に挿入しても、さらに奥の測定用穴が位置ずれや軸ずれしているため、測定用穴内に挿入できなかったり、斜めに傾いてしまって固定できなかったりする問題があった。 The following problems remain in the conventional technology.
When measuring the internal temperature of the battery through a sensor mounting hole provided in the battery or the like, it is necessary to perform measurement by inserting a thermal element such as a thermistor into the sensor mounting hole. However, if the thermistor alone is directly inserted into the sensor mounting hole, it is difficult to securely fix the thermistor. For this reason, like the temperature sensor of the said patent document 2, it is necessary to attach to a sensor attachment hole using a housing part. However, if the sensor mounting hole and the measurement hole provided in the measurement object such as the internal battery have been installed with a slight misalignment, or if the position and spacing of each other changes due to vibration and fluctuation, Further, there may be a case where the sensor mounting hole is inclined. At this time, in the temperature sensor described in Patent Document 2, even if the thermistor part, which is covered with a metal heat transfer improving member, is inserted into the sensor mounting hole, the measurement hole at the back is not aligned with the displacement or shaft. Due to the deviation, there was a problem that it could not be inserted into the measurement hole or was tilted and could not be fixed.

本発明は、前述の課題に鑑みてなされたもので、センサ取付孔が多少位置ずれしたり傾いて形成されていても確実に設置することができる温度センサ装置を提供することを目的とする。   The present invention has been made in view of the above-described problems, and an object of the present invention is to provide a temperature sensor device that can be reliably installed even if the sensor mounting hole is slightly displaced or inclined.

本発明は、前記課題を解決するために以下の構成を採用した。すなわち、第１の発明に係る温度センサ装置は、測定対象に設けられたセンサ取付孔を介して前記測定対象の内部温度を測定する温度センサ装置であって、感熱素子と、該感熱素子に一端が接続された一対の配線端子と、前記一対の配線端子の他端が接続された一対のリード線と、閉じた先端部内に前記感熱素子を配して該感熱素子と前記配線端子の先端側とを覆って保護する前記センサ取付孔に挿入可能な筒状保護部材と、少なくとも前記配線端子と前記リード線との接続部分を収納して前記リード線の先端側を支持すると共に前記筒状保護部材の基端側を支持するケース部とを備え、前記筒状保護部材の少なくとも前記配線端子の周囲が、弾性材で形成されていることを特徴とする。   The present invention employs the following configuration in order to solve the above problems. That is, a temperature sensor device according to a first aspect of the present invention is a temperature sensor device that measures the internal temperature of the measurement object through a sensor mounting hole provided in the measurement object, and includes a thermal element and one end of the thermal element. A pair of wiring terminals connected to each other, a pair of lead wires to which the other ends of the pair of wiring terminals are connected, and the thermosensitive element disposed in a closed tip portion, the tip side of the thermosensitive element and the wiring terminal A cylindrical protective member that can be inserted into the sensor mounting hole for covering and protecting, and at least a connection portion between the wiring terminal and the lead wire is accommodated to support the tip end side of the lead wire and the cylindrical protection And a case portion that supports a base end side of the member, and at least the periphery of the wiring terminal of the cylindrical protective member is formed of an elastic material.

この温度センサ装置では、感熱素子と配線端子の先端側とを覆って保護する筒状保護部材の少なくとも配線端子の周囲が、弾性材で形成されているので、例えばセンサ取付孔と測定用穴とがずれている場合やセンサ取付孔が斜めに形成されているような場合でも、弾性材の部分で筒状保護部材が曲がって先端をしっかり測定用穴内に挿入させることができる。また、センサ取付孔と測定用穴との間隔が振動等で若干短くなり、筒状保護部材の先端が穴底に当たって押されても、弾性材を用いた筒状保護部材が弾性的に縮み易く、安定した取付状態を保持することができる。したがって、高精度に設けられたセンサ取付孔でなくても温度センサ装置を容易にかつ確実に取り付けでき、組み込みコストが低減できると共に、バッテリ等の測定対象の温度を正確に測定することが可能になる。また、少なくとも一部を弾性材で形成された筒状保護部材内に感熱素子が収納されているので、高い防水性や耐振性が得られ、高い信頼性を有している。   In this temperature sensor device, since at least the periphery of the wiring terminal of the cylindrical protective member that covers and protects the thermosensitive element and the distal end side of the wiring terminal is formed of an elastic material, for example, a sensor mounting hole and a measurement hole Even when the sensor is displaced or when the sensor mounting hole is formed obliquely, the cylindrical protective member is bent at the elastic material portion, and the tip can be firmly inserted into the measurement hole. In addition, even if the distance between the sensor mounting hole and the measurement hole is slightly shortened due to vibration or the like, even if the tip of the cylindrical protective member hits the bottom of the hole and is pressed, the cylindrical protective member using an elastic material is easily elastically contracted. , A stable mounting state can be maintained. Therefore, the temperature sensor device can be easily and surely attached even if it is not a sensor mounting hole provided with high accuracy, the assembling cost can be reduced, and the temperature of the measuring object such as a battery can be accurately measured. Become. In addition, since the heat sensitive element is housed in a cylindrical protective member formed at least partly of an elastic material, high waterproofness and vibration resistance are obtained, and high reliability is obtained.

第２の発明に係る温度センサ装置は、第１の発明において、前記ケース部が、前記筒状保護部材が挿入されて外部へ突出させる保護部材用孔と、前記センサ取付孔に前記筒状保護部材を挿入した状態で前記センサ取付孔に嵌め込み可能な固定用突起部とを備え、前記固定用突起部が、前記筒状保護部材の弾性材で形成された部分の外周面に配されていることを特徴とする。
すなわち、この温度センサ装置では、固定用突起部が、筒状保護部材の弾性材で形成された部分の外周面に配されているので、センサ取付孔に固定用突起部を嵌め込む際に、固定用突起部が筒状保護部材の弾性材部分を内側に押すことで筒状保護部材が撓んで容易に固定用突起部をセンサ取付孔に押し込むことができる。 The temperature sensor device according to a second aspect of the present invention is the temperature sensor device according to the first aspect, wherein the case portion is provided with a protective member hole in which the cylindrical protective member is inserted and protrudes to the outside, and the cylindrical protective member is provided in the sensor mounting hole. A fixing protrusion that can be fitted into the sensor mounting hole in a state where the member is inserted, and the fixing protrusion is disposed on an outer peripheral surface of a portion formed of an elastic material of the cylindrical protective member. It is characterized by that.
That is, in this temperature sensor device, since the fixing protrusion is arranged on the outer peripheral surface of the portion formed of the elastic material of the cylindrical protective member, when the fixing protrusion is fitted into the sensor mounting hole, When the fixing projection pushes the elastic material portion of the cylindrical protection member inward, the cylindrical protection member is bent and the fixing projection can be easily pushed into the sensor mounting hole.

第３の発明に係る温度センサ装置は、第２の発明において、前記筒状保護部材が、前記先端部と、該先端部の基端に接続された筒状の筒部本体と、該筒部本体の基端に接続され前記筒部本体よりも外径が大きく形成されて可撓性を有するダイヤフラム部と、該ダイヤフラム部の外周に形成され前記保護部材用孔の周囲に固定されるフランジ部とを有していることを特徴とする。
すなわち、この温度センサ装置では、筒部本体の基端に接続され筒部本体よりも外径が大きく形成されて可撓性を有するダイヤフラム部を有しているので、固定用突起部で固定された状態で、先端部及び筒部本体が軸方向に押されてもダイヤフラム部が撓むことで、筒部本体の基端部がケース本体内に押し込まれる。したがって、弾性体である先端部及び筒部本体の縮みだけでなく、ダイヤフラム部の撓みによって、ケース本体から突出している部分が縮み易くなり、振動等で測定用穴との間隔が狭くなっても、先端部を測定用穴の穴底にさらに安定して密着させることができる。 A temperature sensor device according to a third aspect of the present invention is the temperature sensor device according to the second aspect, wherein the cylindrical protection member includes the distal end portion, a tubular cylindrical body connected to the proximal end of the distal end portion, and the cylindrical portion. A diaphragm portion that is connected to the base end of the main body and has a larger outer diameter than the cylindrical portion main body and has flexibility, and a flange portion that is formed on the outer periphery of the diaphragm portion and is fixed around the hole for the protective member It is characterized by having.
That is, in this temperature sensor device, since it has a flexible diaphragm portion that is connected to the base end of the tube portion main body and has a larger outer diameter than the tube portion main body, it is fixed by the fixing protrusion. In this state, even if the distal end portion and the cylindrical portion main body are pushed in the axial direction, the base end portion of the cylindrical portion main body is pushed into the case main body by bending the diaphragm portion. Therefore, not only the tip part and the cylinder part body, which are elastic bodies, but also the diaphragm part is bent, the part protruding from the case body is easily shrunk, and even if the distance from the measurement hole becomes narrow due to vibration or the like. The tip portion can be more closely attached to the bottom of the measurement hole.

第４の発明に係る温度センサ装置は、第１から第３の発明のいずれかにおいて、前記筒状保護部材が、ゴム製パイプ材で形成されていることを特徴とする。
すなわち、この温度センサ装置では、筒状保護部材がゴム製パイプ材で形成されているので、柔軟で防水性や耐振性が高く、さらに製造コストを低減させることができる。 A temperature sensor device according to a fourth invention is characterized in that, in any one of the first to third inventions, the cylindrical protective member is formed of a rubber pipe material.
That is, in this temperature sensor device, since the cylindrical protective member is formed of a rubber pipe material, it is flexible, has high waterproofness and vibration resistance, and can further reduce the manufacturing cost.

第５の発明に係る温度センサ装置は、第１から第４のいずれかの発明において、前記測定対象が、バッテリであることを特徴とする。
すなわち、この温度センサ装置では、測定対象が、バッテリであるので、バッテリのセンサ取付孔に容易にかつ確実に装着可能であると共に高精度にバッテリの温度を測定することが可能になる。 A temperature sensor device according to a fifth invention is characterized in that, in any one of the first to fourth inventions, the measurement object is a battery.
That is, in this temperature sensor device, since the measurement target is a battery, it can be easily and reliably mounted in the sensor mounting hole of the battery, and the temperature of the battery can be measured with high accuracy.

本発明によれば、以下の効果を奏する。
すなわち、本発明に係る温度センサ装置によれば、筒状保護部材の少なくとも配線端子の周囲が、弾性材で形成されているので、高精度に設けられたセンサ取付孔でなくても温度センサ装置を容易にかつ確実に取り付けでき、設置コストが低減できると共に、バッテリ等の測定対象の温度を正確に測定することが可能になる。また、高い防水性や耐振性が得られ、高い信頼性を得ることができる。
したがって、本発明の温度センサ装置は、バッテリ等のセンサ取付孔に容易にかつ確実に装着可能であると共に高精度にバッテリの温度を測定することができる。特に、ハイブリッド車や電気自動車のバッテリの温度を測定するセンサとして好適である。 The present invention has the following effects.
That is, according to the temperature sensor device of the present invention, since at least the periphery of the wiring terminal of the cylindrical protective member is formed of an elastic material, the temperature sensor device can be used even if it is not a sensor mounting hole provided with high accuracy. Can be easily and reliably attached, the installation cost can be reduced, and the temperature of a measurement object such as a battery can be accurately measured. Moreover, high waterproofness and vibration resistance can be obtained, and high reliability can be obtained.
Therefore, the temperature sensor device of the present invention can be easily and reliably mounted in a sensor mounting hole such as a battery and can measure the temperature of the battery with high accuracy. In particular, it is suitable as a sensor for measuring the temperature of a battery of a hybrid vehicle or an electric vehicle.

本発明に係る温度センサ装置の一実施形態において、バッテリのセンサ取付孔に取り付けた状態の温度センサ装置を示す断面図である。In one Embodiment of the temperature sensor apparatus which concerns on this invention, it is sectional drawing which shows the temperature sensor apparatus of the state attached to the sensor attachment hole of the battery. 本実施形態において、温度センサ装置を示す斜視図である。In this embodiment, it is a perspective view which shows a temperature sensor apparatus. 本実施形態において、温度センサ装置を示す側面図である。In this embodiment, it is a side view which shows a temperature sensor apparatus. 本実施形態において、温度センサ装置を示す底面図である。In this embodiment, it is a bottom view which shows a temperature sensor apparatus. 本実施形態において、蓋部を除いた温度センサ装置を示す平面図である。In this embodiment, it is a top view which shows the temperature sensor apparatus except a cover part. 本実施形態において、ケース本体を示す斜視図である。In this embodiment, it is a perspective view which shows a case main body. 本実施形態において、筒状保護部材を示す斜視図である。In this embodiment, it is a perspective view which shows a cylindrical protection member. 本実施形態において、蓋部を示す斜視図である。In this embodiment, it is a perspective view which shows a cover part. 本実施形態において、位置ずれした取付用孔に設置した温度センサ装置を示す断面図である。In this embodiment, it is sectional drawing which shows the temperature sensor apparatus installed in the mounting hole shifted. 本実施形態において、測定用穴との間隔が短くなった取付用孔に設置した温度センサ装置を示す断面図である。In this embodiment, it is sectional drawing which shows the temperature sensor apparatus installed in the hole for attachment in which the space | interval with the hole for measurement became short.

以下、本発明に係る温度センサ装置の一実施形態を、図１から図１０を参照しながら説明する。   Hereinafter, an embodiment of a temperature sensor device according to the present invention will be described with reference to FIGS.

本実施形態の温度センサ装置１は、図１から図５に示すように、ハイブリッド車や電気自動車に搭載されるバッテリ（測定対象）２のケース３に設けられたセンサ取付孔３ａを介してバッテリ２の内部温度を測定する温度センサ装置である。上記バッテリ２は、ケース３内にバッテリ本体１２が収納されており、ケース３には温度センサ装置を取り付けるためのセンサ取付孔３ａが形成されていると共に、バッテリ本体１２にはセンサ取付孔３ａに対向した位置に測定用穴１２ａが形成されている。   As shown in FIGS. 1 to 5, the temperature sensor device 1 of the present embodiment has a battery via a sensor mounting hole 3 a provided in a case 3 of a battery (measurement target) 2 mounted on a hybrid vehicle or an electric vehicle. 2 is a temperature sensor device that measures the internal temperature of 2. The battery 2 includes a battery main body 12 housed in a case 3, a sensor mounting hole 3 a for mounting a temperature sensor device is formed in the case 3, and the battery main body 12 has a sensor mounting hole 3 a in the sensor mounting hole 3 a. A measurement hole 12a is formed at the opposed position.

この温度センサ装置１は、感熱素子４と、該感熱素子４に一端が接続された一対の配線端子５と、一対の配線端子５の他端が半田付け等により接続された一対のリード線６と、閉じた先端部内に感熱素子４を配して該感熱素子４と配線端子５の先端側とを覆って保護するセンサ取付孔３ａに挿入可能な筒状保護部材７と、少なくとも配線端子５とリード線との接続部分を収納してリード線６の先端側を支持すると共に筒状保護部材７の基端側を支持するケース部８とを備えている。   The temperature sensor device 1 includes a thermal element 4, a pair of wiring terminals 5 having one end connected to the thermal element 4, and a pair of lead wires 6 having the other ends of the pair of wiring terminals 5 connected by soldering or the like. A cylindrical protection member 7 that can be inserted into a sensor mounting hole 3a that covers and protects the thermal element 4 and the distal end side of the wiring terminal 5 by disposing the thermal element 4 in the closed distal end, and at least the wiring terminal 5 And a case portion 8 that accommodates the connecting portion between the lead wire 6 and supports the distal end side of the lead wire 6 and supports the proximal end side of the cylindrical protective member 7.

上記感熱素子４は、サーミスタ素子であり、このサーミスタ素子は、サーミスタ素体と、該サーミスタ素体に形成された一対の電極とを有したチップサーミスタやフレーク形サーミスタである。このサーミスタとしては、ＮＴＣ型、ＰＴＣ型、ＣＴＲ型等のサーミスタがあるが、本実施形態では、サーミスタ素子として、例えばＮＴＣ型サーミスタを採用している。
上記一対の配線端子５の一端は、感熱素子４のサーミスタ素体に形成された一対の電極に接続されている。 The thermosensitive element 4 is a thermistor element, and the thermistor element is a chip thermistor or a flake type thermistor having a thermistor body and a pair of electrodes formed on the thermistor body. As the thermistor, there are thermistors of the NTC type, the PTC type, the CTR type and the like. In this embodiment, for example, an NTC type thermistor is employed as the thermistor element.
One end of the pair of wiring terminals 5 is connected to a pair of electrodes formed on the thermistor body of the thermal element 4.

上記ケース部８は、全体として薄型の略直方体形状とされ、箱状のケース本体９と、該ケース本体９の上部開口部を閉塞して嵌め込まれた蓋部１０とで構成されている。なお、ケース本体９と蓋部１０とは、いずれも樹脂で成形されている。
また、このケース部８は、筒状保護部材７が挿入されて外部へ突出させる保護部材用孔９ｃと、センサ取付孔３ａに筒状保護部材７を挿入した状態でセンサ取付孔３ａに嵌め込み可能な固定用突起部９ａとを備えている。 The case portion 8 has a thin and substantially rectangular parallelepiped shape as a whole, and includes a box-like case main body 9 and a lid portion 10 that is fitted by closing an upper opening of the case main body 9. The case body 9 and the lid portion 10 are both made of resin.
Further, the case portion 8 can be fitted into the sensor mounting hole 3a in a state where the cylindrical protective member 7 is inserted and the protective member hole 9c protruding outside and the cylindrical protective member 7 is inserted into the sensor mounting hole 3a. And a fixing projection 9a.

ケース本体９の周壁部には、図６に示すように、リード線６を通す凹部９ｂが形成されている。また、蓋部１０の周壁部にも、図８に示すように、リード線６を通す凹部１０ｂが形成されている。すなわち、蓋部１０を閉めた際に凹部１０ｂと凹部９ｂとでリード線６を挟むことで、リード線６の抜けやがたつきを防いでいる。また、ケース本体９の内部には、リード線６を下から支持するリード支持部９ｄが立設されている。
また、ケース部９の下面には、筒状保護部材７が挿入される保護部材用孔９ｃが形成されている。
上記リード線６は、配線端子５に接続された金属芯線６ａと、該金属芯線６ａを被覆する絶縁性の被覆材６ｂで構成されている。 As shown in FIG. 6, a concave portion 9 b through which the lead wire 6 is passed is formed in the peripheral wall portion of the case body 9. Further, as shown in FIG. 8, a concave portion 10 b through which the lead wire 6 is passed is also formed in the peripheral wall portion of the lid portion 10. That is, when the lid portion 10 is closed, the lead wire 6 is sandwiched between the concave portion 10b and the concave portion 9b, thereby preventing the lead wire 6 from coming off and rattling. In addition, a lead support portion 9 d that supports the lead wire 6 from below is provided inside the case body 9.
A protective member hole 9 c into which the cylindrical protective member 7 is inserted is formed on the lower surface of the case portion 9.
The lead wire 6 is composed of a metal core wire 6a connected to the wiring terminal 5 and an insulating covering material 6b covering the metal core wire 6a.

上記筒状保護部材７は、図７に示すように、先端部７ａが閉じられた有底の略円筒状であり、少なくとも配線端子５の周囲が絶縁性の弾性材で形成されている。なお、本実施形態の筒状保護部材７は、先端が閉じられたゴム製パイプ材で形成され、全体を弾性材で形成している。
この筒状保護部材７は、上記先端部７ａと、該先端部７ａの基端に接続された円筒状の筒部本体７ｂと、該筒部本体７ｂの基端に接続され該筒部本体７ｂよりも外径が大きく形成されて可撓性を有するダイヤフラム部７ｃと、該ダイヤフラム部７ｃの外周に形成され保護部材用孔９ｃの周囲に固定されるフランジ部７ｄとを有している。なお、先端部７ａは、高熱伝導性のゴム材で形成されている。すなわち、筒状保護部材７は、先端部７ａを形成する高熱伝導性のゴム材と、他の部分を形成するゴム材との二種類のゴム材を用いた二色成形によって一体成形される。 As shown in FIG. 7, the cylindrical protective member 7 has a bottomed, generally cylindrical shape with a distal end 7a closed, and at least the periphery of the wiring terminal 5 is formed of an insulating elastic material. In addition, the cylindrical protection member 7 of this embodiment is formed with the rubber pipe material with which the front-end | tip was closed, and the whole is formed with the elastic material.
The cylindrical protective member 7 is connected to the distal end portion 7a, a cylindrical cylindrical body 7b connected to the proximal end of the distal end 7a, and a proximal end of the tubular main body 7b. A diaphragm portion 7c having a larger outer diameter and having flexibility, and a flange portion 7d formed on the outer periphery of the diaphragm portion 7c and fixed around the protective member hole 9c. The tip 7a is made of a highly heat conductive rubber material. That is, the cylindrical protection member 7 is integrally formed by two-color molding using two types of rubber materials, a high thermal conductivity rubber material that forms the tip portion 7a and a rubber material that forms the other portion.

なお、蓋部１０が嵌め込まれる際に、略四角形状のフランジ部７ｄを上部からケース本体９の底面に押し付けることで、筒状保護部材７がケース部８に固定される。すなわち、蓋部１０の下面に下方に円環状に突出したリブ部１０ａの下端で、フランジ部７ｄの上面を押さえ付けるようにして蓋部１０が嵌め込まれて、筒状保護部材７の基端がケース本体９に固定される。また、この際、ケース本体８の内底面に突出して形成された４つのピン９ｅが、フランジ部７ｄの四隅に形成された固定用孔７ｅに挿通されると共に、蓋部１０のリブ部１０ａの外周に形成された４つのピン用穴１０ｃに挿入されて、フランジ部７ｄが位置決め固定される。   In addition, when the cover part 10 is fitted, the cylindrical protective member 7 is fixed to the case part 8 by pressing the substantially rectangular flange part 7d against the bottom surface of the case body 9 from above. That is, the lid portion 10 is fitted so as to press the upper surface of the flange portion 7d at the lower end of the rib portion 10a projecting annularly downward on the lower surface of the lid portion 10, and the proximal end of the cylindrical protective member 7 is It is fixed to the case body 9. At this time, the four pins 9e formed to protrude from the inner bottom surface of the case body 8 are inserted into the fixing holes 7e formed at the four corners of the flange portion 7d, and the rib portion 10a of the lid portion 10 is formed. The flange portion 7d is positioned and fixed by being inserted into the four pin holes 10c formed on the outer periphery.

上記固定用突起部９ａは、先端が鈎状となった爪部とされ、センサ取付孔３ａに嵌め込まれた際に先端の爪部がセンサ取付孔３ａの周縁に係止されて固定される。
また、固定用突起部９ａは、筒状保護部材７の弾性材で形成された部分の外周面に互いに対向して一対配されている。なお、固定用突起部９ａは、突出方向に対して直交する方向の断面が円弧状に形成されており、円形のセンサ取付孔３ａに対して位置ずれがし難くなっている。 The fixing protrusion 9a is a claw having a hook shape at the tip, and when fitted into the sensor mounting hole 3a, the claw at the tip is locked and fixed to the periphery of the sensor mounting hole 3a.
A pair of fixing projections 9 a are arranged opposite to each other on the outer peripheral surface of the portion formed of the elastic material of the cylindrical protective member 7. The fixing projection 9a is formed in a circular arc shape in a direction orthogonal to the protruding direction, and is difficult to be displaced with respect to the circular sensor mounting hole 3a.

この温度センサ装置１をバッテリ２に取り付ける際、センサ取付孔３ａ内に筒状保護部材７を挿入すると共に、筒状保護部材７の先端をさらに奥にあるバッテリ本体１２の測定用穴１２ａに挿入させる。この際、固定用突起部９ａをセンサ取付孔３ａに押し込んで嵌め、ケース部８をケース３に固定して温度センサ装置１をバッテリ２に固定する。   When the temperature sensor device 1 is attached to the battery 2, the cylindrical protection member 7 is inserted into the sensor attachment hole 3a, and the tip of the cylindrical protection member 7 is further inserted into the measurement hole 12a of the battery body 12 at the back. Let At this time, the fixing projection 9 a is pushed into the sensor mounting hole 3 a and fitted, and the case portion 8 is fixed to the case 3 to fix the temperature sensor device 1 to the battery 2.

このように本実施形態の温度センサ装置１では、感熱素子４と配線端子５の先端側とを覆って保護する筒状保護部材７の少なくとも配線端子５の周囲が、弾性材で形成されているので、図９に示すように、例えばセンサ取付孔３ａと測定用穴１２ａとが軸ずれしている場合やセンサ取付孔が斜めに形成されているような場合でも、弾性材の部分で筒状保護部材７が曲がって先端をしっかり測定用穴１２ａ内に挿入させることができる。   Thus, in the temperature sensor device 1 of the present embodiment, at least the periphery of the wiring terminal 5 of the cylindrical protective member 7 that covers and protects the thermal element 4 and the distal end side of the wiring terminal 5 is formed of an elastic material. Therefore, as shown in FIG. 9, for example, even when the sensor mounting hole 3a and the measurement hole 12a are off-axis or when the sensor mounting hole is formed obliquely, the elastic material portion is cylindrical. The protective member 7 is bent and the tip can be firmly inserted into the measurement hole 12a.

また、図１０に示すように、例えばセンサ取付孔３ａと測定用穴１２ａとの間隔が振動等で若干短くなり、筒状保護部材７の先端が穴底に押されても、ゴム製の先端部７ａ及び筒部本体７ｂが弾性的に縮むと共に、ダイヤフラム部７ｃが撓んで筒部本体７ｂの基端部がケース本体８内に押し込まれた状態となる。これにより、常時、先端部７ａを穴底に密着させることができ、安定した取付状態を保持可能である。   Further, as shown in FIG. 10, for example, even if the distance between the sensor mounting hole 3a and the measurement hole 12a is slightly shortened by vibration or the like, even if the tip of the cylindrical protective member 7 is pushed to the bottom of the hole, the rubber tip The portion 7 a and the tube portion main body 7 b are elastically contracted, and the diaphragm portion 7 c is bent so that the base end portion of the tube portion main body 7 b is pushed into the case main body 8. Thereby, the front-end | tip part 7a can be closely_contact | adhered to a hole bottom always, and the stable attachment state can be hold | maintained.

したがって、高精度に設けられたセンサ取付孔３ａでなくても温度センサ装置１を容易にかつ確実に取り付けでき、組み込みコストが低減できると共に、バッテリ２の温度を正確に測定することが可能になる。また、少なくとも一部を弾性材で形成された筒状保護部材７内に感熱素子４が収納されているので、高い防水性や耐振性が得られ、高い信頼性を有している。   Therefore, the temperature sensor device 1 can be easily and surely attached even if it is not the sensor attachment hole 3a provided with high accuracy, the assembling cost can be reduced, and the temperature of the battery 2 can be accurately measured. . Moreover, since the thermal element 4 is accommodated in the cylindrical protective member 7 at least partially formed of an elastic material, high waterproofness and vibration resistance are obtained, and high reliability is obtained.

また、固定用突起部９ａが、筒状保護部材７の弾性材で形成された部分の外周面に配されているので、センサ取付孔３ａに固定用突起部９ａを嵌め込む際に、固定用突起部９ａが筒状保護部材７の弾性材部分を内側に押すことで筒状保護部材７が撓んで容易に固定用突起部９ａをセンサ取付孔３ａに押し込むことができる。   Further, since the fixing projection 9a is disposed on the outer peripheral surface of the portion formed of the elastic material of the cylindrical protective member 7, when the fixing projection 9a is fitted into the sensor mounting hole 3a, the fixing projection 9a is fixed. When the protruding portion 9a pushes the elastic material portion of the cylindrical protective member 7 inward, the cylindrical protective member 7 is bent and the fixing protruding portion 9a can be easily pushed into the sensor mounting hole 3a.

さらに、筒部本体７ｂの基端に接続され筒部本体７ｂよりも外径が大きく形成されて可撓性を有するダイヤフラム部７ｃを有しているので、固定用突起部９ａで固定された状態で、先端部７ａ及び筒部本体７ｂが軸方向に押されてもダイヤフラム部７ｃが撓むことで、筒部本体７ｂの基端部がケース本体８内に押し込まれる。したがって、弾性体である先端部７ａ及び筒部本体７ｂの縮みだけでなく、ダイヤフラム部７ｃの撓みによって、ケース本体８から突出している部分が縮み易くなり、振動等で測定用穴１２ａとの間隔が狭くなっても、先端部７ａを測定用穴１２ａの穴底にさらに安定して密着させることができる。   Furthermore, since it has the diaphragm part 7c which is connected to the base end of the cylinder part main body 7b and has a larger outer diameter than the cylinder part main body 7b and has flexibility, it is fixed by the fixing protrusion 9a. Thus, even if the distal end portion 7a and the cylindrical portion main body 7b are pressed in the axial direction, the diaphragm portion 7c bends, whereby the proximal end portion of the cylindrical portion main body 7b is pushed into the case main body 8. Therefore, not only the contraction of the distal end portion 7a and the cylindrical portion main body 7b, which are elastic bodies, but also the portion protruding from the case main body 8 is easily contracted by the deflection of the diaphragm portion 7c, and the distance from the measurement hole 12a due to vibration or the like Even if the diameter becomes narrower, the tip 7a can be more closely attached to the bottom of the measurement hole 12a.

また、筒状保護部材７がゴム製パイプ材で形成されているので、柔軟で防水性や耐震性が高く、さらに製造コストを低減させることができる。
したがって、本実施形態の温度センサ装置１は、バッテリ２のセンサ取付孔３ａに容易にかつ確実に装着可能であると共に高精度にバッテリ２の温度を測定することができる。特に、ハイブリッド車や電気自動車のバッテリの温度を測定するセンサとして好適である。 Moreover, since the cylindrical protection member 7 is formed of a rubber pipe material, it is flexible and has high waterproofness and earthquake resistance, and the manufacturing cost can be reduced.
Therefore, the temperature sensor device 1 of the present embodiment can be easily and reliably mounted in the sensor mounting hole 3a of the battery 2 and can measure the temperature of the battery 2 with high accuracy. In particular, it is suitable as a sensor for measuring the temperature of a battery of a hybrid vehicle or an electric vehicle.

なお、本発明は上記実施形態に限定されるものでなく、本発明の趣旨を逸脱しない範囲において種々の変更を加えることができる。
例えば、上記実施形態では、温度センサ装置をバッテリのケースに直接取り付けているが、ケースとバッテリとの間にパッキンを挟んで取り付けても構わない。この場合、温度センサ装置の位置ずれやがたつきをさらに防止することができる。 In addition, this invention is not limited to the said embodiment, A various change can be added in the range which does not deviate from the meaning of this invention.
For example, in the above embodiment, the temperature sensor device is directly attached to the battery case. However, the temperature sensor device may be attached with a packing sandwiched between the case and the battery. In this case, it is possible to further prevent the position shift and the rattling of the temperature sensor device.

１…温度センサ装置、２…バッテリ（測定対象）、３ａ…センサ取付孔、４…感熱素子、５…配線端子、６…リード線、７…筒状保護部材、８…ケース部、９…ケース本体、９ａ…固定用突起部、１０…蓋部   DESCRIPTION OF SYMBOLS 1 ... Temperature sensor apparatus, 2 ... Battery (measurement object), 3a ... Sensor mounting hole, 4 ... Thermal element, 5 ... Wiring terminal, 6 ... Lead wire, 7 ... Cylindrical protection member, 8 ... Case part, 9 ... Case Main body, 9a ... fixing projection, 10 ... lid

Claims (3)

測定対象に設けられたセンサ取付孔を介して前記測定対象の内部温度を測定する温度センサ装置であって、
感熱素子と、
該感熱素子に一端が接続された一対の配線端子と、
前記一対の配線端子の他端が接続された一対のリード線と、
閉じた先端部内に前記感熱素子を配して該感熱素子と前記配線端子の先端側とを覆って保護する前記センサ取付孔に挿入可能な筒状保護部材と、
少なくとも前記配線端子と前記リード線との接続部分を収納して前記リード線の先端側を支持すると共に前記筒状保護部材の基端側を支持するケース部とを備え、
前記筒状保護部材の少なくとも前記配線端子の周囲が、弾性材で形成され、
前記ケース部が、前記筒状保護部材が挿入されて外部へ突出させる保護部材用孔と、前記センサ取付孔に前記筒状保護部材を挿入した状態で前記センサ取付孔に嵌め込み可能な固定用突起部とを備え、
前記固定用突起部が、前記筒状保護部材の弾性材で形成された部分の外周面に配され、
前記筒状保護部材が、前記先端部と、該先端部の基端に接続された筒状の筒部本体と、該筒部本体の基端に接続され前記筒部本体よりも外径が大きく形成されて可撓性を有するダイヤフラム部と、該ダイヤフラム部の外周に形成され前記保護部材用孔の周囲に固定されるフランジ部とを有していることを特徴とする温度センサ装置。 A temperature sensor device that measures the internal temperature of the measurement object through a sensor mounting hole provided in the measurement object,
A thermal element;
A pair of wiring terminals connected at one end to the thermal element;
A pair of lead wires to which the other ends of the pair of wiring terminals are connected;
A tubular protective member that can be inserted into the sensor mounting hole for protecting the thermal element by covering the thermal element and the distal end side of the wiring terminal by disposing the thermal element in a closed distal end;
A case portion that accommodates at least a connection portion between the wiring terminal and the lead wire and supports a distal end side of the lead wire and supports a proximal end side of the cylindrical protective member;
Around at least the wiring terminal of the cylindrical protective member is formed of an elastic material ,
The case portion has a protective member hole that is inserted into the cylindrical protective member and protrudes to the outside, and a fixing protrusion that can be fitted into the sensor mounting hole in a state where the cylindrical protective member is inserted into the sensor mounting hole. With
The fixing protrusion is disposed on the outer peripheral surface of the portion formed of the elastic material of the cylindrical protective member,
The cylindrical protective member is connected to the distal end portion, a cylindrical tubular body main body connected to the proximal end of the distal end portion, and a proximal end of the tubular body, and has an outer diameter larger than that of the tubular body. A temperature sensor device comprising: a formed diaphragm portion having flexibility; and a flange portion formed on an outer periphery of the diaphragm portion and fixed around the protective member hole . 請求項１に記載の温度センサ装置において、
前記筒状保護部材が、ゴム製パイプ材で形成されていることを特徴とする温度センサ装置。 The temperature sensor device according to claim 1 ,
The temperature sensor device, wherein the cylindrical protective member is formed of a rubber pipe material. 請求項１又は２に記載の温度センサ装置において、
前記測定対象が、バッテリであることを特徴とする温度センサ装置。 The temperature sensor device according to claim 1 or 2 ,
The temperature sensor device, wherein the measurement object is a battery.
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CN111164396B (en) * 2017-12-06 2021-11-30 Nok株式会社 Temperature measuring device and temperature measuring mechanism

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