JP2019219173A - Mounting structure of flue gas temperature sensor - Google Patents

Mounting structure of flue gas temperature sensor Download PDF

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JP2019219173A
JP2019219173A JP2018114270A JP2018114270A JP2019219173A JP 2019219173 A JP2019219173 A JP 2019219173A JP 2018114270 A JP2018114270 A JP 2018114270A JP 2018114270 A JP2018114270 A JP 2018114270A JP 2019219173 A JP2019219173 A JP 2019219173A
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temperature sensor
flue gas
smoke exhaust
mounting structure
gas temperature
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JP7088751B2 (en
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康弘 杉森
Yasuhiro Sugimori
康弘 杉森
知宏 松島
Tomohiro Matsushima
知宏 松島
彬宜 坂本
Akinori Sakamoto
彬宜 坂本
慎輔 東
Shinsuke Higashi
慎輔 東
貴大 川地
Takahiro Kawachi
貴大 川地
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Yazaki Corp
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Yazaki Corp
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Priority to CN201910516673.5A priority patent/CN110608807A/en
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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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
    • G01K7/16—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements
    • G01K7/22—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements the element being a non-linear resistance, e.g. thermistor

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Measuring Temperature Or Quantity Of Heat (AREA)
  • Gas Exhaust Devices For Batteries (AREA)
  • Secondary Cells (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

To provide a mounting structure for a fast-response flue gas temperature sensor capable of measuring the temperature of gas flowing instantaneously at a high temperature.SOLUTION: In a mounting structure 10 of a flue gas temperature sensor 11 attached to a flue gas path K into which gas G that is discharged from an electric cell 2 of a battery pack 1 connected with the plurality of electric cells 2 flows, a temperature measuring element 15 for detecting a temperature of the gas G is arranged in a resin case 20 so that a detection portion 13 of the flue gas temperature sensor 11 covered with a resin material 14 protrudes outward, and the detection portion 13 is mounted so as to protrude into the flue gas path K with a regular protrusion allowance L.SELECTED DRAWING: Figure 1

Description

本発明は、電池パックの単電池から排出されたガスが流入する排煙経路に取り付けられる排煙温度センサの取付構造に関する。   The present invention relates to a mounting structure of a flue gas temperature sensor that is mounted on a flue gas path into which gas discharged from a unit cell of a battery pack flows.

例えば、電気自動車やハイブリッド電気自動車等の車両に搭載されて駆動源として使用される電池パックとして、特許文献１に開示されたものがある。この電池パック（電池モジュール）１は、図６〜図８に示すように、複数並列接続された略円柱形状の単電池（電池セル）２と、各単電池２の負極の下端側を貫通させる収容孔３ａと排煙通路３ｂを形成した電池ホルダ３と、各単電池２の負極が接触する円形状の凹部４ａと排煙通路４ｂを形成した負極バスバー４と、この負極バスバー４を被うと共に排煙室５ｂを有した排煙室カバー５と、天井板部６ａに各単電池２の正極の上端側を貫通して保持する保持開口６ｂを有した側方カバー６と、各単電池２の正極が接触する正極バスバー７と、この正極バスバー７を被う上方カバー８とを備えている。   For example, as a battery pack mounted on a vehicle such as an electric vehicle or a hybrid electric vehicle and used as a driving source, there is one disclosed in Patent Document 1. As shown in FIGS. 6 to 8, this battery pack (battery module) 1 penetrates a plurality of substantially columnar unit cells (battery cells) 2 connected in parallel and a lower end side of a negative electrode of each unit cell 2. The battery holder 3 having the accommodation hole 3a and the smoke exhaust passage 3b formed therein, the negative bus bar 4 having the circular concave portion 4a in which the negative electrode of each cell 2 contacts and the smoke exhaust passage 4b formed, and the negative electrode bus bar 4 is covered. A smoke exhaust chamber cover 5 having a smoke exhaust chamber 5b, a side cover 6 having a ceiling plate 6a having a holding opening 6b for penetrating and holding the upper end side of the positive electrode of each unit cell 2, and each unit cell A positive bus bar 7 with which the two positive electrodes are in contact, and an upper cover 8 that covers the positive bus bar 7 are provided.

図８に示すように、排煙室カバー５の排煙室５ｂと負極バスバー４の排煙通路４ｂ及び電池ホルダ３の排煙通路３ｂによって排煙経路Ｋが形成されている。そして、電池ホルダ３の排煙通路３ｂに設けられた排煙温度センサ９によって排煙経路Ｋを通過する単電池２から排出されたガスＧの温度が測定されるようになっている。   As shown in FIG. 8, a smoke exhaust passage K is formed by the smoke exhaust chamber 5b of the smoke exhaust chamber cover 5, the smoke exhaust passage 4b of the negative bus bar 4, and the smoke exhaust passage 3b of the battery holder 3. The temperature of the gas G discharged from the unit cells 2 passing through the smoke exhaust passage K is measured by a smoke exhaust temperature sensor 9 provided in the smoke exhaust passage 3b of the battery holder 3.

特開２０１８−２６３０８号公報JP 2018-26308 A

しかしながら、前記従来の排煙温度センサ９は、排煙経路Ｋの中央付近にはなく、排煙経路Ｋを形成する電池ホルダ３の壁面側に取り付けられていて、その突出代も管理されていないため、摩擦や圧力損出が発生して排煙温度センサ９の応答が鈍くなり、排煙検知を正確に行うことが難しかった。特に、短時間で急激にガスＧの温度の上昇と下降が起こる排煙を検知するには応答性が悪かった。   However, the conventional flue gas temperature sensor 9 is not located near the center of the flue gas passage K, but is attached to the wall surface side of the battery holder 3 forming the flue gas passage K, and its protrusion margin is not managed. Therefore, the response of the smoke temperature sensor 9 becomes slow due to friction and pressure loss, and it has been difficult to accurately detect smoke. In particular, responsiveness was poor for detecting flue gas in which the temperature of the gas G suddenly rises and falls in a short time.

そこで、本発明は、前記した課題を解決すべくなされたものであり、高温で瞬間的に流れるガスの温度を測定できる応答性の速い排煙温度センサの取付構造を提供することを目的とする。   SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problem, and has as its object to provide a fast-response flue gas temperature sensor mounting structure capable of measuring the temperature of a gas that flows instantaneously at a high temperature. .

本発明は、複数の単電池が接続された電池パックの前記単電池から排出されたガスが流入する排煙経路に取り付けられる排煙温度センサの取付構造であって、前記ガスの温度を検知する測温素子が樹脂材で覆われてなる前記排煙温度センサの検知部を外側に突出するように樹脂製のケースに配設し、前記検知部を前記排煙経路内に正規の突出代で突出するように取り付けたことを特徴とする。   The present invention is a mounting structure of a smoke exhaust temperature sensor attached to a smoke exhaust path of a battery pack to which a plurality of unit cells are connected, through which gas exhausted from the unit cells flows, and detects a temperature of the gas. A detection section of the smoke exhaust temperature sensor in which the temperature measuring element is covered with a resin material is disposed in a resin case so as to protrude outward, and the detection section is inserted into the smoke exhaust path with a regular projection allowance. It is characterized by being mounted so as to protrude.

本発明によれば、測温素子を樹脂材で覆ってなる排煙温度センサの検知部を電池パックの排煙経路内に正規の突出代で突出するように取り付けたことにより、排煙経路内を流れるガスの温度を短時間でかつ正確に検知して測定することができる。   According to the present invention, the detection section of the smoke exhaust temperature sensor in which the temperature measuring element is covered with the resin material is mounted so as to protrude into the smoke exhaust path of the battery pack with a regular projection allowance, so that the smoke exhaust path can be reduced. The temperature of the gas flowing through can be detected and measured accurately in a short time.

本発明の第１実施形態の排煙温度センサの取付構造を示す断面図である。It is a sectional view showing the mounting structure of the flue gas temperature sensor of a 1st embodiment of the present invention. 上記排煙温度センサを樹脂製のケースに固定する前の状態を示す斜視図である。It is a perspective view showing the state before fixing the above-mentioned flue gas temperature sensor to a resin case. 上記排煙温度センサの突出代と応答性を比較した説明図である。It is explanatory drawing which compared the protrusion allowance and responsiveness of the said smoke exhaust temperature sensor. 本発明の第２実施形態の排煙温度センサを樹脂製のケースに固定する前の状態を示す正面図である。It is a front view showing the state before fixing a flue gas temperature sensor of a 2nd embodiment of the present invention to a resin case. 上記第２実施形態の排煙温度センサを樹脂製のケースに固定した状態を示す正面図である。It is a front view showing the state where the flue gas temperature sensor of a 2nd embodiment was fixed to a case made of resin. 従来の電池パックの分解斜視図である。It is an exploded perspective view of the conventional battery pack. 上記従来の電池パックの斜視図である。It is a perspective view of the above-mentioned conventional battery pack. 上記従来の電池パックの要部を断面で示す説明図である。It is explanatory drawing which shows the principal part of the said conventional battery pack by a cross section.

以下、本発明の実施形態を図面に基づいて説明する。   Hereinafter, embodiments of the present invention will be described with reference to the drawings.

図１は本発明の第１実施形態の排煙温度センサの取付構造を示す断面図、図２は同排煙温度センサを樹脂製のケースに固定する前の状態を示す斜視図、図３は同排煙温度センサの突出代と応答性を比較した説明図である。   FIG. 1 is a cross-sectional view showing a mounting structure of a flue gas temperature sensor according to a first embodiment of the present invention, FIG. 2 is a perspective view showing a state before fixing the flue gas temperature sensor to a resin case, and FIG. It is explanatory drawing which compared the protrusion allowance and responsiveness of the smoke exhaust temperature sensor.

図１に示すように、排煙温度センサ１１の取付構造１０は、複数のリチウム電池等の単電池（電池セル）２が並列接続された電池パック（電池モジュール）１の単電池２から排出されたガスＧが流入する排煙経路Ｋに取り付けられるものであり、センサ本体１２を有する排煙温度センサ１１と、この排煙温度センサ１１のセンサ本体１２を固着する合成樹脂製のケース２０と、を備えている。   As shown in FIG. 1, a mounting structure 10 of a smoke exhaust temperature sensor 11 is discharged from a single cell 2 of a battery pack (battery module) 1 in which a plurality of single cells (battery cells) 2 such as lithium batteries are connected in parallel. A flue gas temperature sensor 11 having a sensor body 12, a synthetic resin case 20 for fixing the sensor body 12 of the flue gas temperature sensor 11, It has.

図１及び図２に示すように、排煙温度センサ１１のセンサ本体１２は、負の温度特性をもつ（温度が上昇すると抵抗値が減少する）素子であるＮＴＣサーミスタ（測温素子）１５とその一対のリード線１６，１６の各先端１６ａ側を薄肉（薄膜）の樹脂材としての接着剤１４で覆った検知部１３と、一対のリード線１６，１６の各基端１６ｂと一対の電線１８，１８の各芯線部１８ａを半田付けにより接続した部分（図１中半田付け部分を符号Ｈで示す）の周囲を薄肉（薄膜）の樹脂材としての接着剤１４で覆った胴体部１７と、を備えている。   As shown in FIGS. 1 and 2, the sensor body 12 of the flue gas temperature sensor 11 includes an NTC thermistor (temperature measuring element) 15 having a negative temperature characteristic (a resistance value decreases as the temperature increases). A detecting portion 13 in which the tip 16a side of each of the pair of lead wires 16, 16 is covered with an adhesive 14 as a thin (thin film) resin material, each base end 16b of the pair of lead wires 16, 16 and a pair of electric wires. A body portion 17 in which the periphery of a portion where each of the core portions 18a of the wires 18 and 18 are connected by soldering (the soldered portion is denoted by a symbol H in FIG. 1) is covered with an adhesive 14 as a thin (thin film) resin material. , Is provided.

即ち、センサ本体１２は、一対のリード線１６，１６を介してＮＴＣサーミスタ１５を接続した一対の電線１８，１８の先端側を接着剤１４を充填した槽に浸漬させて形作る。この場合、合成樹脂材の成形品等よりも形状や寸法がバラ付くが、浸漬条件で膜厚を薄膜にコントロールすることができるため、薄膜であってもＮＴＣサーミスタ１５の一対のリード線１６，１６間のショートを防止することができる。また、浸漬条件を管理することで、ＮＴＣサーミスタ１５の変形や折れを防止することができる。そして、接着剤１４の浸漬により形成されたセンサ本体１２の胴体部１７は、断面凹字状の合成樹脂製のケース２０に配置され、更に接着剤２３で一体化される。   That is, the sensor main body 12 is formed by immersing the distal ends of the pair of electric wires 18, 18 connected to the NTC thermistor 15 via the pair of lead wires 16, 16 in a tank filled with the adhesive 14. In this case, the shape and dimensions are more variable than the molded product of the synthetic resin material. However, since the film thickness can be controlled to a thin film under the immersion condition, even if the thin film is used, the pair of lead wires 16 of the NTC thermistor 15 can be formed. 16 can be prevented. Further, by controlling the immersion conditions, it is possible to prevent the NTC thermistor 15 from being deformed or broken. The body 17 of the sensor body 12 formed by dipping the adhesive 14 is disposed in a synthetic resin case 20 having a concave cross section, and is further integrated with the adhesive 23.

図１及び図２に示すように、合成樹脂製のケース２０は、底壁部２１と、この底壁部２１の両端側から垂直に起立する両側壁部２２，２２とで断面凹字状に形成されている。底壁部２１と両側壁部２２，２２の中央側には、前後側より低い凹部２１ｂ，２２ｂをそれぞれ形成してある。即ち、底壁部２１の中央の凹部２１ｂの底面は、前側の底面２１ａよりも低くなっていると共に、前側の底面２１ａより後側の底面２１ｃが高くなっている。また、側壁部２２の中央の凹部２２ｂの内面は、後側の内面２２ｃよりも凹んでいると共に、後側の内面２２ｃは前側の内面２２ａよりも凹んでいる。   As shown in FIGS. 1 and 2, the case 20 made of synthetic resin has a bottom wall portion 21 and both side wall portions 22, 22 which stand vertically from both ends of the bottom wall portion 21, and have a concave cross section. Is formed. Concave portions 21b, 22b lower than the front and rear sides are formed in the center of the bottom wall 21 and the side walls 22, 22, respectively. That is, the bottom surface of the concave portion 21b at the center of the bottom wall portion 21 is lower than the front bottom surface 21a, and the rear bottom surface 21c is higher than the front bottom surface 21a. Further, the inner surface of the concave portion 22b at the center of the side wall portion 22 is more concave than the inner surface 22c on the rear side, and the inner surface 22c on the rear side is more concave than the inner surface 22a on the front side.

そして、ケース２０の中央の凹部２１ｂ，２２ｂに接着剤２３を塗布してセンサ本体１２の胴体部１７をケース２０に一体化することで、ＮＴＣサーミスタ１５を薄肉の接着剤１４で覆ってなるセンサ本体１２の検知部１３がケース２０の前面２０ａより外側に突出代（突出量）Ｌ分突出するようになっている。そして、排煙温度センサ１１のセンサ本体１２を電池パック１の排煙経路Ｋの壁部Ｍの開口部Ｎに取り付けると、ＮＴＣサーミスタ１５を薄肉の接着剤１４で覆ってなる検知部１３は、排煙経路Ｋに対して正規の突出代Ｌを確保した状態で取り付けられるようになっている。即ち、ケース２０の中央の凹部２１ｂ，２２ｂに接着剤２３を塗布してセンサ本体１２の胴体部１７を一体化して固着する際に、検知部１３の突出代Ｌを、図３に示すように、正規の温度に近い突出代に予め設定することで、この実施形態の場合は、例えば、正規の突出代Ｌを６ｍｍにして一体化する。   Then, the adhesive 23 is applied to the concave portions 21 b and 22 b at the center of the case 20 and the body 17 of the sensor body 12 is integrated with the case 20, so that the NTC thermistor 15 is covered with the thin adhesive 14. The detection portion 13 of the main body 12 is configured to protrude outward from the front surface 20 a of the case 20 by a protruding margin (projection amount) L. When the sensor main body 12 of the smoke exhaust temperature sensor 11 is attached to the opening N of the wall M of the smoke exhaust path K of the battery pack 1, the detection unit 13 that covers the NTC thermistor 15 with a thin adhesive 14 It can be attached to the smoke exhaust path K with a proper protrusion allowance L secured. That is, when the adhesive 23 is applied to the central concave portions 21b and 22b of the case 20 and the body portion 17 of the sensor main body 12 is integrally fixed, the protrusion allowance L of the detecting portion 13 is changed as shown in FIG. In this embodiment, for example, by setting the protrusion allowance L close to the regular temperature to 6 mm, the integral protrusion is set to 6 mm.

また、ケース２０の底壁部２１と両側壁部２２，２２の中央側には、前後側より低い凹部２１ｂ，２２ｂをそれぞれ形成してあるため、ケース２０の中央の凹部２１ｂ，２２ｂに接着剤２３を塗布してセンサ本体１２の胴体部１７側を一体化して固着することができ、接着剤２３がケース２０の中央の凹部２１ｂ，２２ｂから前後側に漏れ難くなっている。   Also, since concave portions 21b, 22b lower than the front and rear sides are formed in the center of the bottom wall 21 and the side walls 22, 22 of the case 20, respectively, the adhesive is applied to the central concave portions 21b, 22b of the case 20. 23 can be applied and the body 17 side of the sensor body 12 can be integrally fixed, and the adhesive 23 is unlikely to leak from the central recesses 21b and 22b of the case 20 to the front and rear sides.

尚、電池パック１は、電気自動車（ＥＶ）やハイブリッド電気自動車（ＨＥＶ）等の車両に搭載されて駆動源として使用されるものである。   The battery pack 1 is mounted on a vehicle such as an electric vehicle (EV) or a hybrid electric vehicle (HEV) and used as a drive source.

以上実施形態の排煙温度センサ１１の取付構造１０によれば、排煙温度センサ１１のＮＴＣサーミスタ１５を薄肉の接着剤１４で覆ってなる検知部１３を電池パック１の排煙経路Ｋ内に正規の突出代Ｌで突出するように取り付けたことにより、排煙経路Ｋ内を流れるガスＧの温度を短時間でかつ正確に検知して測定することができる。即ち、高温で瞬間的に流れるガスＧの温度を短時間で確実に測定することができる。また、短時間で急激にガスＧの温度の上昇と下降が起こる場合でも排煙検知を短時間で瞬時に測定することができ、応答性をより一段と向上させることができる。   According to the mounting structure 10 of the flue gas temperature sensor 11 of the embodiment described above, the detection unit 13 in which the NTC thermistor 15 of the flue gas temperature sensor 11 is covered with the thin adhesive 14 is provided in the flue gas passage K of the battery pack 1. By mounting so as to protrude with the regular protruding allowance L, the temperature of the gas G flowing in the smoke exhaust path K can be detected and measured accurately in a short time. That is, the temperature of the gas G flowing instantaneously at a high temperature can be reliably measured in a short time. Further, even when the temperature of the gas G suddenly rises and falls in a short time, smoke detection can be instantaneously measured in a short time, and the responsiveness can be further improved.

図４は本発明の第２実施形態の排煙温度センサを樹脂製のケースに固定する前の状態を示す正面図、図５は同排煙温度センサを樹脂製のケースに固定した状態を示す正面図である。   FIG. 4 is a front view showing a state before fixing the flue gas temperature sensor according to the second embodiment of the present invention to a resin case, and FIG. 5 shows a state where the flue gas temperature sensor is fixed to a resin case. It is a front view.

図４及び図５に示すように、この第２実施形態の排煙温度センサ１１′は、胴体部１７の両側に一対の係止凸部１９，１９を設け、樹脂製のケース２０の両側壁部２２，２２の中央の各凹部２２ｂの両側に一対の係止凹部２４，２４を設けてある点が、前記第１実施形態と異なる。尚、他の構成は、前記第１実施形態と同様であるため、同一構成部分には同一符号を付して詳細な説明は省略する。   As shown in FIGS. 4 and 5, the smoke exhaust temperature sensor 11 ′ of the second embodiment has a pair of locking projections 19 on both sides of a body 17, and a side wall of a resin case 20. The second embodiment differs from the first embodiment in that a pair of locking recesses 24, 24 are provided on both sides of each recess 22b at the center of the portions 22, 22, respectively. Since other configurations are the same as those of the first embodiment, the same components are denoted by the same reference numerals, and detailed description is omitted.

この第２実施形態の排煙温度センサ１１′によれば、胴体部１７の一対の係止凸部１９，１９と樹脂製のケース２０の両側壁部２２，２２の一対の係止凹部２４，２４とを係止することで、ケース２０の中央の凹部２１ｂ，２２ｂにセンサ本体１２の胴体部１７側をより確実に固着することができると共に、ＮＴＣサーミスタ１５を薄肉の接着剤１４で覆ってなる検知部１３の排煙経路Ｋに対する正規の突出代Ｌをより確実に確保することができる。   According to the smoke exhaust temperature sensor 11 ′ of the second embodiment, a pair of locking projections 19, 19 of the body 17 and a pair of locking recesses 24 of both side walls 22, 22 of the resin case 20. 24, the body 17 of the sensor body 12 can be more securely fixed to the recesses 21b, 22b at the center of the case 20, and the NTC thermistor 15 is covered with a thin adhesive 14. Thus, a regular projection allowance L for the smoke exhaust path K of the detection unit 13 can be more reliably secured.

尚、前記各実施形態によれば、樹脂製のケースの中央に接着剤を塗布してセンサ本体の胴体部側を一体化して固着する際に、ケースの中央の凹部を前後側より低く形成して接着剤の漏れを防止していたが、更に漏れ防止用の壁を突設して接着剤の漏れをより確実に防止するようにしても良い。   According to each of the above embodiments, when applying an adhesive to the center of the resin case and integrally fixing the body side of the sensor main body, the concave portion at the center of the case is formed lower than the front and rear sides. Although the leakage of the adhesive has been prevented by the above, a wall for preventing leakage may be further provided so as to more reliably prevent the leakage of the adhesive.

また、前記各実施形態によれば、測温素子としてＮＴＣサーミスタを用いたが、正の温度特性をもつ（温度が上昇すると抵抗値が増加する）素子であるＰＴＣサーミスタやＣＴＲサーミスタを測温素子として用いても良い。   Further, according to the above embodiments, the NTC thermistor is used as the temperature measuring element. However, a PTC thermistor or a CTR thermistor having a positive temperature characteristic (the resistance value increases as the temperature rises) is replaced with a temperature measuring element. You may use as.

１ 電池パック
２ 単電池
１０ 排煙温度センサの取付構造
１１，１１′ 排煙温度センサ
１３ 検知部
１４ 接着剤（樹脂材）
１５ ＮＴＣサーミスタ（測温素子）
１７ 胴体部
１９ 係止凸部
２０ 樹脂製のケース
２１ 底壁部
２１ｂ 中央の凹部
２２，２２ 両側壁部
２３ 接着剤
２４ 係止凹部
Ｋ 排煙経路
Ｇ ガス
Ｌ 正規の突出代 DESCRIPTION OF SYMBOLS 1 Battery pack 2 Cell 10 Smoke exhaust temperature sensor mounting structure 11, 11 'Smoke exhaust temperature sensor 13 Detecting part 14 Adhesive (resin material)
15 NTC thermistor (temperature measuring element)
Reference Signs List 17 Body 19 Locking projection 20 Resin case 21 Bottom wall 21b Central recess 22, 22 Side wall 23 Adhesive 24 Locking recess K Smoke exhaust path G Gas L Regular protrusion allowance

Claims (3)

複数の単電池が接続された電池パックの前記単電池から排出されたガスが流入する排煙経路に取り付けられる排煙温度センサの取付構造であって、
前記ガスの温度を検知する測温素子が樹脂材で覆われてなる前記排煙温度センサの検知部を外側に突出するように樹脂製のケースに配設し、
前記検知部を前記排煙経路内に正規の突出代で突出するように取り付けたことを特徴とする排煙温度センサの取付構造。 A mounting structure of a smoke exhaust temperature sensor attached to a smoke exhaust path in which gas discharged from the unit cells of a battery pack to which a plurality of unit cells are connected flows,
A temperature measuring element for detecting the temperature of the gas is disposed in a resin case so that a detection unit of the flue gas temperature sensor, which is covered with a resin material, projects outward.
A mounting structure for a smoke exhaust temperature sensor, wherein the detection unit is attached so as to protrude into the smoke exhaust path with a regular projection allowance. 請求項１記載の排煙温度センサの取付構造であって、
前記樹脂製のケースを底壁部と両側壁部とで断面凹字状に形成し、
前記底壁部の中央側に前後側より低い凹部を設け、
前記凹部に接着剤を塗布して前記排煙温度センサを前記樹脂製のケースに一体化することで、前記測温素子の検知部の前記排煙経路に対する前記正規の突出代を確保したこと特徴とする排煙温度センサの取付構造。 It is a mounting structure of the flue gas temperature sensor according to claim 1,
The resin case is formed in a concave cross section with a bottom wall and both side walls,
At the center of the bottom wall, a recess is provided lower than the front and rear sides,
By applying an adhesive to the concave portion and integrating the smoke exhaust temperature sensor with the resin case, the regular protrusion allowance of the detecting section of the temperature measuring element with respect to the smoke exhaust path is secured. Mounting structure of the flue gas temperature sensor. 請求項１または２記載の排煙温度センサの取付構造であって、
前記排煙温度センサの前記測温素子に接続されたリード線の埋設部分である胴体部の両側部と前記樹脂製のケースの両側壁部のいずれか一方に係止凸部を、他方に係止凹部を設け、
前記係止凸部と前記係止凹部とを係止することで、前記測温素子の検知部の前記排煙経路に対する前記正規の突出代を確保したことを特徴とする排煙温度センサの取付構造。 It is a mounting structure of the flue gas temperature sensor according to claim 1 or 2,
A locking projection is provided on one of both sides of the body, which is a buried portion of the lead wire connected to the temperature measuring element of the flue gas temperature sensor, and on both sides of the resin case, and the other is provided. A stop recess is provided,
The fixing of the locking convex portion and the locking concave portion secures the regular projection allowance of the detecting section of the temperature measuring element with respect to the smoke exhaust path, and is attached to the smoke exhaust temperature sensor. Construction.
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