JP2009250768A - Temperature sensor - Google Patents

Temperature sensor Download PDF

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JP2009250768A
JP2009250768A JP2008098515A JP2008098515A JP2009250768A JP 2009250768 A JP2009250768 A JP 2009250768A JP 2008098515 A JP2008098515 A JP 2008098515A JP 2008098515 A JP2008098515 A JP 2008098515A JP 2009250768 A JP2009250768 A JP 2009250768A
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heat transfer
subject
temperature sensor
housing portion
temperature
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JP5173540B2 (en
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Kazuyuki Matsunaga
和之 松永
Yasuyuki Suzuki
康之 鈴木
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Ishizuka Electronics Corp
Yazaki Corp
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Ishizuka Electronics Corp
Yazaki Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a temperature sensor capable of improving the accuracy of temperature measurements and of improving the measurement responsiveness. <P>SOLUTION: The temperature sensor 1 comprises: a sensor body 1a that has a housing part 5 made of resin and is disposed in contact with a battery cell 9 being a subject body to be inspected; a thermistor 3 (temperature measuring element), that is disposed inside the housing part 5 and outputs a detection signal corresponding to the temperature of heat transferred to the inside of the housing part 5 from the battery cell 9; and a heat transfer improving member 41, made of metal, that is disposed between the battery cell 9 and the thermistor 3 in the housing part 5 and improves the efficiency of heat transfer to the thermistor 3. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、例えばバッテリーセル等の被検体に当接又は近接配置されて、この被検体の温度測定に用いるのに好適な温度センサに関する。   The present invention relates to a temperature sensor that is placed in contact with or close to a subject such as a battery cell and is suitable for use in temperature measurement of the subject.

従来から、ハイブリッド車や電気自動車等の車両に搭載されるバッテリー(二次電池)として、ニッケル−水素電池、ニッケル−金属水素化物電池、リチウムイオン二次電池等、各種の電池が開発されている。
この種のバッテリーは、通常、出力電圧を高めるために、複数個のバッテリーセルをバスバーにより直列に接続した構成をなしている。また、この種のバッテリーでは、各バッテリーセルの過充電、過放電を防止するために、バッテリーセルの温度を測定するための温度センサが取り付けられる。
Conventionally, various batteries such as a nickel-hydrogen battery, a nickel-metal hydride battery, and a lithium ion secondary battery have been developed as batteries (secondary batteries) mounted on vehicles such as hybrid cars and electric cars. .
This type of battery usually has a configuration in which a plurality of battery cells are connected in series by a bus bar in order to increase the output voltage. In addition, in this type of battery, a temperature sensor for measuring the temperature of the battery cell is attached in order to prevent overcharge and overdischarge of each battery cell.

図4(a)は前述のバッテリーセルの温度測定に使用される温度センサの従来例を示したもので、図4(b)は図4(a)に示した温度センサをバッテリーセルに取り付けた状態を示している。   FIG. 4A shows a conventional example of a temperature sensor used for measuring the temperature of the battery cell described above, and FIG. 4B shows the temperature sensor shown in FIG. 4A attached to the battery cell. Indicates the state.

ここに示した温度センサ101は、特許文献1に開示されたものであり、バッテリーセル121に近接するように配置される樹脂製のハウジング部113を有するセンサ本体101aと、このハウジング部113の内部に配設され、且つバッテリーセル121からハウジング部113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111と、を備えている。   The temperature sensor 101 shown here is disclosed in Patent Document 1, and includes a sensor main body 101 a having a resin housing portion 113 disposed so as to be close to the battery cell 121, and the interior of the housing portion 113. And a thermistor 111 that outputs a detection signal corresponding to the temperature of the heat transmitted from the battery cell 121 to the housing portion 113.

サーミスタ111は、所定の電極に接続されたリード線114と、このリード線114から引き出された引き出し線115とを経て検出信号を外部の検出装置(不図示)に出力する。   The thermistor 111 outputs a detection signal to an external detection device (not shown) via a lead wire 114 connected to a predetermined electrode and a lead wire 115 drawn from the lead wire 114.

そして、前述の樹脂製のハウジング部113は、サーミスタ111及びリード線114と前述の引き出し線115の被覆115aの一部とを液密状態に覆うための内側合成樹脂層141と、この内側合成樹脂層141の周囲を覆う略有底筒状構造の外側合成樹脂層143とから構成されている。また、外側合成樹脂層143の先端には平坦な凸面部131が形成されており、この平坦な凸面部131が被検体であるバッテリーセル121に近接するように配置されることになる。   The housing 113 made of resin includes an inner synthetic resin layer 141 for covering the thermistor 111 and the lead wire 114 and a part of the coating 115a of the lead wire 115 in a liquid-tight state, and the inner synthetic resin. And an outer synthetic resin layer 143 having a substantially bottomed cylindrical structure covering the periphery of the layer 141. Further, a flat convex surface portion 131 is formed at the tip of the outer synthetic resin layer 143, and the flat convex surface portion 131 is disposed so as to be close to the battery cell 121 as the subject.

ハウジング部113を構成している2つの樹脂層141,143の内、内側合成樹脂層141はサーミスタ111やリード線114の周囲に防水性を確保する目的で装備されており、一方、外側合成樹脂層143はバッテリーセル121への取り付け性が良い一定の形態、形状を付与する目的で装備されている。   Of the two resin layers 141 and 143 constituting the housing part 113, the inner synthetic resin layer 141 is provided around the thermistor 111 and the lead wire 114 for the purpose of ensuring waterproofness, while the outer synthetic resin is provided. The layer 143 is equipped for the purpose of giving a certain shape and shape that is easy to attach to the battery cell 121.

以上の温度センサ101は、図4(b)に示すように、バッテリーセル121を収容するバッテリーケース151の上蓋153に装備されたセンサ取付筒155に装着される。なお、センサ取付筒155は、底壁をバッテリーセル121に接触させた有底円筒状の樹脂製筒体である。   As shown in FIG. 4B, the above temperature sensor 101 is mounted on a sensor mounting cylinder 155 mounted on the upper lid 153 of the battery case 151 that houses the battery cell 121. The sensor mounting cylinder 155 is a bottomed cylindrical resin cylinder whose bottom wall is in contact with the battery cell 121.

図4(b)に示したように、温度センサ101は、その凸面部131がセンサ取付筒155の底壁に接触するように、センサ取付筒155に収容される。そして、温度センサ101は、センサ取付筒155に収容された時、外側合成樹脂層143の基端部に一体形成された弾性係合突起である一対のクランプ143aが上蓋153の止め具153aに係合することで、バッテリーケース151に固定されることになる。
このように固定されることにより、バッテリーケース151に固定された温度センサ101は、センサ取付筒155の底壁を介して測定用受熱面部131に伝達されるバッテリーセル121の温度を検出することになる。
As shown in FIG. 4B, the temperature sensor 101 is accommodated in the sensor mounting cylinder 155 so that the convex surface portion 131 contacts the bottom wall of the sensor mounting cylinder 155. When the temperature sensor 101 is accommodated in the sensor mounting cylinder 155, a pair of clamps 143a, which are elastic engagement protrusions integrally formed on the base end portion of the outer synthetic resin layer 143, are engaged with the stopper 153a of the upper lid 153. By combining, the battery case 151 is fixed.
By being fixed in this way, the temperature sensor 101 fixed to the battery case 151 detects the temperature of the battery cell 121 transmitted to the measurement heat receiving surface 131 via the bottom wall of the sensor mounting cylinder 155. Become.

特開2005−189080号公報JP 2005-189080 A

しかしながら、前述した従来の温度センサ101の場合、バッテリーセル121とサーミスタ111との間には、ハウジング部113を構成している内側合成樹脂層141と外側合成樹脂層143とが位置しており、バッテリーセル121から凸面部131に伝達された熱の一部が前述の各合成樹脂層141,143に拡散することにより、サーミスタ111への熱伝達効率が低減して、温度の測定精度が低下するおそれがあり、改善の余地があった。   However, in the case of the above-described conventional temperature sensor 101, the inner synthetic resin layer 141 and the outer synthetic resin layer 143 constituting the housing portion 113 are located between the battery cell 121 and the thermistor 111. A part of the heat transmitted from the battery cell 121 to the convex surface portion 131 is diffused into the above-described synthetic resin layers 141 and 143, whereby the heat transfer efficiency to the thermistor 111 is reduced and the temperature measurement accuracy is lowered. There was a fear and there was room for improvement.

また、前述の各合成樹脂層141,143は金属等と比較すると熱伝達効率が低く、その影響でサーミスタ111への熱伝導が遅れて、測定に応答遅れが生じ易いという問題も発生していた。   Further, each of the above-mentioned synthetic resin layers 141 and 143 has a low heat transfer efficiency as compared with a metal or the like, and as a result, the heat conduction to the thermistor 111 is delayed, and there is a problem that a response delay is likely to occur in the measurement. .

本発明は前述の事情に鑑みてなされたものであり、その目的は、測定用受熱面部からサーミスタ等の測温素子への熱伝導性を高めると共に、被検体と測温素子との間に位置する樹脂層への熱の拡散を抑止して、これにより、温度測定精度を向上させ、且つ測定の応答性を向上させることができる温度センサを提供することにある。   The present invention has been made in view of the above circumstances, and its purpose is to increase the thermal conductivity from the measurement heat receiving surface portion to a temperature measuring element such as a thermistor and to be positioned between the subject and the temperature measuring element. An object of the present invention is to provide a temperature sensor that suppresses the diffusion of heat to the resin layer, thereby improving the temperature measurement accuracy and improving the response of the measurement.

本発明の前述した目的は、下記の構成により達成される。
(1) 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、且つ前記被検体から前記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測温素子と、
前記被検体と前記測温素子との間に位置するように前記ハウジング部に設けられた、前記測温素子への前記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
ことを特徴とする温度センサ。
(2) 前記熱伝達向上部材の少なくとも一部が、インサート成形により、前記ハウジング部に埋設されている
ことを特徴とする上記(1)の温度センサ。
(3) 前記熱伝達向上部材が、
前記被検体と前記測温素子との間に位置するように前記ハウジング部に設けられ、且つ前記被検体に接触するように前記ハウジング部の表面から露出された被検体接触部と、
前記ハウジング部に埋設されて、当該被検体接触部に伝達された熱を前記サーミスタに伝達するための埋設伝熱部と、
を有している
ことを特徴とする上記(1)又は(2)の温度センサ。
(4) 前記熱伝達向上部材は、前記被検体と同一の金属材料で形成されている
ことを特徴とする上記(1)〜(3)のいずれか1つに記載の温度センサ。
The above-described object of the present invention is achieved by the following configuration.
(1) a sensor main body having a resin housing portion disposed so as to be in contact with or close to the subject;
A temperature measuring element disposed inside the housing portion and outputting a detection signal corresponding to a temperature of heat transmitted from the subject to the inside of the housing portion;
A metal heat transfer improving member provided in the housing portion so as to be positioned between the subject and the temperature measuring element, for increasing the efficiency of transferring the heat to the temperature measuring element;
A temperature sensor comprising:
(2) The temperature sensor according to (1), wherein at least a part of the heat transfer improving member is embedded in the housing portion by insert molding.
(3) The heat transfer improving member is
A subject contact portion provided on the housing portion so as to be positioned between the subject and the temperature measuring element and exposed from the surface of the housing portion so as to contact the subject;
An embedded heat transfer section that is embedded in the housing section and transmits heat transferred to the subject contact section to the thermistor;
The temperature sensor according to the above (1) or (2), characterized by comprising:
(4) The temperature sensor according to any one of (1) to (3), wherein the heat transfer improving member is formed of the same metal material as the subject.

上記(1)の構成によれば、測温素子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が被検体と測温素子との間に位置するようにセンサ本体のハウジング部に設けられている。これにより、被検体から測温素子への熱伝導性が高められると共に、被検体と測温素子との間に位置するハウジング部の樹脂層への熱の拡散が抑制される。したがって、温度センサにおける温度測定精度を向上させ、且つ測定の応答性を向上させることができる。
上記(2)の構成によれば、熱伝達向上部材の少なくとも一部が、インサート成形により、センサ本体のハウジング部に埋設されているので、被検体と測温素子との間に位置するハウジング部の樹脂層内での熱伝達向上部材の位置決め精度を向上させると共に、熱伝達向上部材の固定強度を高めることができ、測定精度にばらつきの無い高品位の温度センサを量産することができる。
上記(3)の構成によれば、熱伝達向上部材が被検体接触部と埋設伝熱部とを有しているので、被検体の熱が、この被検体に直に接触している被検体接触部を介して直に熱伝達向上部材に伝わり、この熱伝達向上部材から効率良く測温素子に伝達されるため、被検体から測温素子への熱伝達率を高めることができ、温度センサにおける温度測定精度を向上させると共に、測定の応答性を更に向上させることができる。
上記(4)の構成によれば、熱伝達向上部材を被検体と同一の金属材料で形成しているので、被検体と熱伝達向上部材との間の接触が同一金属同士の接触となり、異種金属の接触に起因する電食の発生を避けることができ、電食による被検体や熱伝達向上部材の腐食を防止することができる。
According to the configuration of (1) above, the housing portion of the sensor body is arranged such that the metal heat transfer improving member for increasing the heat transfer efficiency to the temperature measuring element is located between the subject and the temperature measuring element. Is provided. As a result, the thermal conductivity from the subject to the temperature measuring element is enhanced, and the diffusion of heat to the resin layer of the housing portion located between the subject and the temperature measuring element is suppressed. Therefore, the temperature measurement accuracy in the temperature sensor can be improved, and the measurement responsiveness can be improved.
According to the configuration of (2) above, since at least a part of the heat transfer improving member is embedded in the housing portion of the sensor body by insert molding, the housing portion positioned between the subject and the temperature measuring element. In addition to improving the positioning accuracy of the heat transfer improving member within the resin layer, it is possible to increase the fixing strength of the heat transfer improving member, and mass-produce high-quality temperature sensors with no variation in measurement accuracy.
According to the configuration of (3) above, since the heat transfer improving member has the subject contact portion and the embedded heat transfer portion, the subject in which the heat of the subject is in direct contact with the subject. Since it is directly transmitted to the heat transfer improving member through the contact portion and is efficiently transmitted from the heat transfer improving member to the temperature measuring element, the heat transfer rate from the subject to the temperature measuring element can be increased. It is possible to improve the temperature measurement accuracy and further improve the response of the measurement.
According to the configuration of (4) above, since the heat transfer improving member is formed of the same metal material as the subject, the contact between the subject and the heat transfer improving member becomes the contact between the same metals, so Occurrence of electrolytic corrosion due to metal contact can be avoided, and corrosion of the subject and the heat transfer improving member due to electrolytic corrosion can be prevented.

本発明によれば、測定用受熱面部からサーミスタ等の測温素子への熱伝導性を高めると共に、被検体と測温素子との間に位置する樹脂層への熱の拡散を抑止して、これにより、温度測定精度を向上させ、且つ測定の応答性を向上させることができる温度センサを提供することができる。   According to the present invention, while increasing the thermal conductivity from the measurement heat receiving surface portion to the temperature measuring element such as the thermistor, suppressing the diffusion of heat to the resin layer located between the subject and the temperature measuring element, As a result, it is possible to provide a temperature sensor that can improve the temperature measurement accuracy and improve the response of the measurement.

以下、本発明に係る温度センサの好適な実施形態について、図面を参照しながら説明する。
図1は本発明に係る温度センサの一実施の形態の概略構成を示す斜視図である。図2(a)は図1に示した温度センサがバッテリーケースに取り付けられた状態の正面図である。図2(b)は(a)のA−A断面図である。図3は図1に示した温度センサの測定用受熱面部がバッテリーケース内のバッテリーセルに当接している状態を示す正面図である。
Hereinafter, preferred embodiments of a temperature sensor according to the present invention will be described with reference to the drawings.
FIG. 1 is a perspective view showing a schematic configuration of an embodiment of a temperature sensor according to the present invention. FIG. 2A is a front view showing a state in which the temperature sensor shown in FIG. 1 is attached to the battery case. FIG.2 (b) is AA sectional drawing of (a). FIG. 3 is a front view showing a state in which the measurement heat receiving surface portion of the temperature sensor shown in FIG. 1 is in contact with the battery cell in the battery case.

本実施形態に係る温度センサ1は、被検体であるバッテリーセル9(図3参照)に当接するように配置される樹脂製のハウジング部5を有するセンサ本体1aと、このハウジング部5の内部に配設され、且つバッテリーセル9からハウジング部5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)3と、バッテリーセル9とサーミスタ3との間に位置するようにハウジング部5に設けられた、サーミスタ3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41と、サーミスタ3の電極に接続されてハウジング部5の基端側から延出する引き出し線(電線)7a,7bと、を主に備えている。   The temperature sensor 1 according to the present embodiment includes a sensor main body 1a having a resin housing portion 5 disposed so as to abut on a battery cell 9 (see FIG. 3) as a subject, and the housing portion 5 inside. A thermistor (temperature measuring element) 3 that is disposed and outputs a detection signal corresponding to the temperature of heat transmitted from the battery cell 9 to the inside of the housing portion 5, and is located between the battery cell 9 and the thermistor 3. The heat transfer improving member 41 made of metal for increasing the heat transfer efficiency to the thermistor 3 and the electrode of the thermistor 3 provided on the housing part 5 and extending from the proximal end side of the housing part 5 Lead wires (electric wires) 7a and 7b are mainly provided.

また、本実施形態では、複数個のバッテリーセル9は図3に示すようにバッテリーケース13内の各セル収容部13aに収納されており、バッテリーケース13の上部には、モジュール部品15が取り付けられることになる。
このモジュール部品15は、各バッテリーセル9の上方を覆う板状のモジュール本体21を有しており、このモジュール本体21には温度センサ1を取り付けるための取付穴23がバッテリーセル9に向かうように貫通形成されている。
In the present embodiment, the plurality of battery cells 9 are housed in the respective cell housing portions 13 a in the battery case 13 as shown in FIG. 3, and the module component 15 is attached to the upper part of the battery case 13. It will be.
The module component 15 has a plate-shaped module main body 21 that covers the upper side of each battery cell 9, and the module main body 21 has an attachment hole 23 for attaching the temperature sensor 1 facing the battery cell 9. It is formed through.

温度センサ1のハウジング部5の基端側の両側には、取付穴23の周縁部に係合可能な一対の弾性係止片31と、この弾性係止片31の基端部から分岐して後方(温度センサ1の取付穴23への挿入方向に対して後方、即ち図中、上方向)に延設された一対の操作受片33と、がそれぞれ温度センサ1に一体形成されている。   On both sides of the base end side of the housing portion 5 of the temperature sensor 1, a pair of elastic locking pieces 31 that can be engaged with the peripheral edge portion of the mounting hole 23, and a branch from the base end portion of the elastic locking pieces 31. A pair of operation receiving pieces 33 extending rearward (backward with respect to the insertion direction of the temperature sensor 1 into the mounting hole 23, that is, upward in the drawing) are integrally formed with the temperature sensor 1.

一対の弾性係止片31は、それらの先端部に向かうに従って互いに離反するように傾斜しており、それらの先端部の間隔が取付孔23の穴径よりも大きくなるように形成されている。そして、この一対の弾性係止片31は、それらの先端部の間隔を狭め、若しくは広げる向きにそれ自体が弾性変形可能である。   The pair of elastic locking pieces 31 are inclined so as to be separated from each other toward the front end portions thereof, and are formed such that the distance between the front end portions is larger than the hole diameter of the mounting hole 23. The pair of elastic locking pieces 31 can be elastically deformed in the direction of narrowing or widening the distance between the tips.

また、一対の操作受片33は、一対の弾性係止片31の間に形成されている。また、この一対の操作受片33は、それらの先端部に向かうに従って互いに離反するように傾斜して、それらの先端部の間隔が取付孔23の穴径よりも大きくなるように形成されている。また、一対の操作受片33自体が弾性変形しにくいように、リブ33aがそれぞれ形成されている。   Further, the pair of operation receiving pieces 33 is formed between the pair of elastic locking pieces 31. Further, the pair of operation receiving pieces 33 are inclined so as to be separated from each other toward the front end portions thereof, and are formed so that the distance between the front end portions is larger than the hole diameter of the mounting hole 23. . In addition, ribs 33a are formed so that the pair of operation receiving pieces 33 themselves are not easily elastically deformed.

そして、温度センサ1をモジュール本体21の取付穴23に取り付ける際には、一対の操作受片33を互いに接近する方向に挟み付けてハウジング部5の中心軸側にその基端部(根元部)を中心として撓ませる。このとき、一対の操作受片33に設けられたリブ33aの作用により、この撓みに伴って、一対の弾性係止片31もこの一対の操作受片33と共にハウジング部5の中心軸側にその基端部(根元部)を中心として撓むことになり、この状態で、温度センサ1をモジュール本体21の取付穴23に挿入すると、一対の弾性係止片31は、取付穴23の周縁部との摺接により両先端部の間隔が狭まるようにさらに弾性変形して、取付穴23を通過することになる。   And when attaching the temperature sensor 1 to the attachment hole 23 of the module main body 21, a pair of operation receiving piece 33 is pinched | interposed in the direction which mutually approaches, and the base end part (root part) is on the center axis side of the housing part 5. Bend around. At this time, due to the action of the ribs 33 a provided on the pair of operation receiving pieces 33, along with this bending, the pair of elastic locking pieces 31 also move toward the central axis side of the housing portion 5 together with the pair of operation receiving pieces 33. When the temperature sensor 1 is inserted into the mounting hole 23 of the module main body 21 in this state, the pair of elastic locking pieces 31 are arranged at the peripheral portions of the mounting hole 23. Is further elastically deformed so that the distance between the two end portions is narrowed by the sliding contact, and passes through the mounting hole 23.

そして、取付穴23を通過した一対の弾性係止片31は、弾性変形から開放されて元の形状に復元されて取付穴23の周縁部の裏面側に係合することになる。一方、一対の操作受片33は、取付穴23を通過することなく、取付穴23の表面側に係合することになる。   Then, the pair of elastic locking pieces 31 that have passed through the mounting hole 23 are released from the elastic deformation and restored to the original shape, and are engaged with the back side of the peripheral edge of the mounting hole 23. On the other hand, the pair of operation receiving pieces 33 are engaged with the surface side of the mounting hole 23 without passing through the mounting hole 23.

このように、取付孔23に挿入された温度センサ1は、図2(a)に示すように、一対の弾性係止片31及び一対の操作受片33との間に取付孔23の周縁部を挟み込み、モジュール部品15の取付孔23の周縁部に係止されることになる。そして、この状態で、図3に示すように、モジュール部品15が複数のバッテリーセル9に跨って装着されたとき、温度センサ1は、そのハウジング部5に設けられた熱伝達向上部材41の被検体接触部43(後述)を所定のバッテリーセル9に接触させることになる。
なお、このときには、弾性係止片31は、図3に示すように、取付穴23の裏面側の周縁部に係合することで、熱伝達向上部材41の被検体接触部43を、取付穴23に対向しているバッテリーセル9に対し、所定の押圧力で接触させる付勢部材としても機能することになる。
Thus, as shown in FIG. 2A, the temperature sensor 1 inserted into the mounting hole 23 has a peripheral portion of the mounting hole 23 between the pair of elastic locking pieces 31 and the pair of operation receiving pieces 33. And is locked to the peripheral edge of the mounting hole 23 of the module component 15. In this state, as shown in FIG. 3, when the module component 15 is mounted across the plurality of battery cells 9, the temperature sensor 1 is covered by the heat transfer improving member 41 provided in the housing portion 5. The specimen contact portion 43 (described later) is brought into contact with a predetermined battery cell 9.
At this time, as shown in FIG. 3, the elastic locking piece 31 engages with the peripheral portion on the back surface side of the mounting hole 23, so that the subject contact portion 43 of the heat transfer improving member 41 is attached to the mounting hole. It also functions as an urging member for contacting the battery cell 9 facing the battery 23 with a predetermined pressing force.

ここで、熱伝達向上部材41は、図2(a)、(b)に示すように、バッテリーセル9とサーミスタ3との間に位置するようにハウジング部5に設けられ、且つバッテリーセル9に接触するようにハウジング部5の表面から露出された平板状の被検体接触部43と、ハウジング部5に埋設されて、この被検体接触部43に伝達された熱をサーミスタ3に伝達するための一対の埋設伝熱部45と、を有している。   Here, as shown in FIGS. 2A and 2B, the heat transfer improving member 41 is provided in the housing portion 5 so as to be positioned between the battery cell 9 and the thermistor 3, and is attached to the battery cell 9. A plate-shaped subject contact portion 43 exposed from the surface of the housing portion 5 so as to come into contact, and a heat embedded in the housing portion 5 and transmitted to the subject contact portion 43 to the thermistor 3. A pair of embedded heat transfer sections 45.

即ち、熱伝達向上部材41は、例えば、一枚の平板を金属板のプレス成形により側面視でコ字状に形成されたプレス成形品であり、図2(b)に示すように、被検体接触部43はそのプレス成形品の略矩形状の底平板部によりなり、バッテリーセル9はこの底平板部全体にわたって接触されることになる。そして、埋設伝熱部45は、この被検体当接部43の両縁部から直行方向(図中上下方向)に延出された一対の側平板によりなり、サーミスタ3はこの一対の側平板により挟まれて位置することになる。このような、被検体接触部43と埋設伝熱部45とを有した熱伝達向上部材41は、インサート成形により、被検体接触部43のみをセンサ本体1aのハウジング部5の表面から露出させた状態で、このハウジング部5に埋設されることになる。   That is, the heat transfer improving member 41 is, for example, a press-formed product in which a single flat plate is formed in a U shape in a side view by press-molding a metal plate. As shown in FIG. The contact portion 43 is formed of a substantially rectangular bottom flat plate portion of the press-molded product, and the battery cell 9 is brought into contact over the entire bottom flat plate portion. The embedded heat transfer section 45 is composed of a pair of side plates extending in the orthogonal direction (vertical direction in the figure) from both edges of the subject contact portion 43, and the thermistor 3 is composed of the pair of side plates. It will be located between. In such a heat transfer improving member 41 having the subject contact portion 43 and the embedded heat transfer portion 45, only the subject contact portion 43 is exposed from the surface of the housing portion 5 of the sensor body 1a by insert molding. In this state, it is embedded in the housing part 5.

さらに、熱伝達向上部材41は、被検体であるバッテリーセル9の接触する部分と同一の金属材料により形成されている。例えば、バッテリーセル9のその接触部分がアルミニウム製とされる場合には、熱伝達向上部材41もアルミニウム製となる。   Furthermore, the heat transfer improving member 41 is formed of the same metal material as the portion in contact with the battery cell 9 that is the subject. For example, when the contact portion of the battery cell 9 is made of aluminum, the heat transfer improving member 41 is also made of aluminum.

以上説明したとおり、本実施形態によれば、サーミスタ3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41がサーミスタ3との間に位置するようにセンサ本体1aのハウジング部5に設けられている。これにより、被検体であるバッテリーセル9からサーミスタ3への熱伝導性が高められると共に、バッテリーセル9とサーミスタ3との間に位置するハウジング部5の樹脂層への熱の拡散が抑制される。したがって、温度センサ1における温度測定精度を向上させ、且つ測定の応答性を向上させることができる。   As described above, according to the present embodiment, the housing portion 5 of the sensor main body 1 a is arranged such that the metal heat transfer improving member 41 for increasing the heat transfer efficiency to the thermistor 3 is positioned between the thermistor 3. Is provided. Thereby, the thermal conductivity from the battery cell 9 as the subject to the thermistor 3 is enhanced, and the diffusion of heat to the resin layer of the housing portion 5 located between the battery cell 9 and the thermistor 3 is suppressed. . Therefore, the temperature measurement accuracy in the temperature sensor 1 can be improved, and the response of measurement can be improved.

また、本実施形態によれば、熱伝達向上部材41が、インサート成形により、センサ本体1aのハウジング部5に埋設されているので、バッテリーセル9とサーミスタ3との間に位置するハウジング部5の樹脂層内での熱伝達向上部41の位置決め精度を向上させると共に、熱伝達向上部41の固定強度を高めることができ、測定精度にばらつきの無い高品位の温度センサ1を量産することができる。   Moreover, according to this embodiment, since the heat transfer improving member 41 is embedded in the housing part 5 of the sensor main body 1a by insert molding, the housing part 5 positioned between the battery cell 9 and the thermistor 3 is provided. The positioning accuracy of the heat transfer improving portion 41 in the resin layer can be improved, the fixing strength of the heat transfer improving portion 41 can be increased, and the high-quality temperature sensor 1 with no variation in measurement accuracy can be mass-produced. .

さらに、本実施形態によれば、熱伝達向上部41が、図2(b)にも示したように、被検体接触部43と埋設伝熱部45とを有しているので、バッテリーセル9の熱が、このバッテリーセル9に直に接触している被検体接触部を介して直に熱伝達向上部41に伝わり、この熱伝達向上部41から効率良くサーミスタ3に伝達されるため、バッテリーセル9からサーミスタ3への熱伝達率を高めることができ、温度センサ1における温度測定精度を向上させると共に、測定の応答性を更に向上させることができる。   Furthermore, according to this embodiment, as shown in FIG. 2B, the heat transfer improving unit 41 includes the subject contact unit 43 and the embedded heat transfer unit 45, so that the battery cell 9 Is directly transferred to the heat transfer improving part 41 through the subject contact part that is in direct contact with the battery cell 9, and is efficiently transferred to the thermistor 3 from the heat transfer improving part 41. The heat transfer rate from the cell 9 to the thermistor 3 can be increased, the temperature measurement accuracy in the temperature sensor 1 can be improved, and the measurement responsiveness can be further improved.

また、本実施形態によれば、熱伝達向上部41を、バッテリーセル9の接触する部分と同一の金属材料で形成しているので、被検体であるバッテリーセル9と熱伝達向上部41との間の接触が同一金属同士の接触となり、異種金属の接触に起因する電食の発生を避けることができ、電食によるバッテリーセル9や熱伝達向上部材41の腐食を防止することができる。   Moreover, according to this embodiment, since the heat transfer improvement part 41 is formed with the same metal material as the part which the battery cell 9 contacts, the battery cell 9 which is a test object, and the heat transfer improvement part 41 The contact between them becomes the contact between the same metals, so that the occurrence of electrolytic corrosion due to the contact of different metals can be avoided, and corrosion of the battery cell 9 and the heat transfer improving member 41 due to electrolytic corrosion can be prevented.

なお、本発明に係る温度センサの用途は、前述した実施形態に示したバッテリーセルの温度検出に限るものではなく、各種の温度測定に利用可能であることは言うまでもない。   Note that the use of the temperature sensor according to the present invention is not limited to the temperature detection of the battery cell shown in the above-described embodiment, and it goes without saying that it can be used for various temperature measurements.

また、本発明は、前述した実施形態に限定されるものではなく、適宜、変形、改良、等が可能である。その他、上述した実施形態における各構成要素の形状、寸法、数値、形態、数、配置箇所、等は本発明を達成できるものであれば任意であり、限定されない。
例えば、前述した実施形態では、熱伝達向上部41の一部がハウジング部5の表面から露出した構成として説明したが、その表面から露出されないように全体がハウジング部5内に埋設されるように構成してもよい。また、前述した実施形態では、ハウジング部5がバッテリーセル等の被検体と当接するとして説明したが、近接するように配置してもよく、この場合においても本発明の前述した目的を達成することができる。
Further, the present invention is not limited to the above-described embodiments, and modifications, improvements, and the like can be appropriately made. In addition, the shape, size, numerical value, form, number, arrangement location, and the like of each component in the above-described embodiment are arbitrary and are not limited as long as the present invention can be achieved.
For example, in the above-described embodiment, the configuration in which a part of the heat transfer improving portion 41 is exposed from the surface of the housing portion 5 is described. However, the entire portion is embedded in the housing portion 5 so as not to be exposed from the surface. It may be configured. In the above-described embodiment, the housing portion 5 has been described as being in contact with a subject such as a battery cell. However, the housing portion 5 may be disposed close to the object, and in this case, the above-described object of the present invention is achieved. Can do.

本発明に係る温度センサの一実施の形態の概略構成を示す斜視図である。1 is a perspective view showing a schematic configuration of an embodiment of a temperature sensor according to the present invention. (a)は図1に示した温度センサがバッテリーケースに取り付けられた状態の正面図、(b)は(a)のA−A断面図である。(A) is a front view of the state in which the temperature sensor shown in FIG. 1 is attached to the battery case, and (b) is an AA cross-sectional view of (a). 図1に示した温度センサの測定用受熱面部がバッテリーケース内のバッテリーセルに当接している状態を示す正面図である。It is a front view which shows the state which the heat-receiving surface part for a measurement of the temperature sensor shown in FIG. 1 is contact | abutting to the battery cell in a battery case. (a)は従来の温度センサの概略構成を示す正面図、(b)は(a)の温度センサをバッテリーセルに取り付けた状態の説明図である。(A) is a front view which shows schematic structure of the conventional temperature sensor, (b) is explanatory drawing of the state which attached the temperature sensor of (a) to the battery cell.

符号の説明Explanation of symbols

1 温度センサ
1a センサ本体
3 サーミスタ(測温素子)
5 ハウジング部
7a,7b 引き出し線
9 バッテリーセル(被検体)
13 バッテリーケース
13a セル収容部
15 モジュール部品
21 モジュール本体
23 取付穴
31 弾性係止片
33 操作受片
41 熱伝達向上部材
43 被検体接触部
45 埋設伝熱部
1 Temperature Sensor 1a Sensor Body 3 Thermistor (Temperature Sensor)
5 Housing portion 7a, 7b Lead wire 9 Battery cell (subject)
DESCRIPTION OF SYMBOLS 13 Battery case 13a Cell accommodating part 15 Module component 21 Module main body 23 Mounting hole 31 Elastic locking piece 33 Operation receiving piece 41 Heat transfer improvement member 43 Subject contact part 45 Buried heat transfer part

Claims (4)

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、且つ前記被検体から前記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測温素子と、
前記被検体と前記測温素子との間に位置するように前記ハウジング部に設けられた、前記測温素子への前記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
ことを特徴とする温度センサ。
A sensor body having a resin-made housing portion arranged so as to be in contact with or close to the subject;
A temperature measuring element disposed inside the housing portion and outputting a detection signal corresponding to a temperature of heat transmitted from the subject to the inside of the housing portion;
A metal heat transfer improving member provided in the housing portion so as to be positioned between the subject and the temperature measuring element, for increasing the efficiency of transferring the heat to the temperature measuring element;
A temperature sensor comprising:
前記熱伝達向上部材の少なくとも一部が、インサート成形により、前記ハウジング部に埋設されている
ことを特徴とする請求項1に記載の温度センサ。
The temperature sensor according to claim 1, wherein at least a part of the heat transfer improving member is embedded in the housing portion by insert molding.
前記熱伝達向上部材が、
前記被検体と前記測温素子との間に位置するように前記ハウジング部に設けられ、且つ前記被検体に接触するように前記ハウジング部の表面から露出された被検体接触部と、
前記ハウジング部に埋設されて、当該被検体接触部に伝達された熱を前記サーミスタに伝達するための埋設伝熱部と、
を有している
ことを特徴とする請求項1又は2に記載の温度センサ。
The heat transfer improving member is
A subject contact portion provided in the housing portion so as to be positioned between the subject and the temperature measuring element and exposed from the surface of the housing portion so as to contact the subject;
An embedded heat transfer section that is embedded in the housing section and transmits heat transferred to the subject contact section to the thermistor;
The temperature sensor according to claim 1, wherein the temperature sensor is provided.
前記熱伝達向上部材は、前記被検体と同一の金属材料で形成されている
ことを特徴とする請求項1〜3のいずれか1つに記載の温度センサ。
The temperature sensor according to claim 1, wherein the heat transfer improving member is formed of the same metal material as the subject.
JP2008098515A 2008-04-04 2008-04-04 Temperature sensor Active JP5173540B2 (en)

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JP2012237723A (en) * 2011-05-13 2012-12-06 Hitachi Vehicle Energy Ltd Electrical storage device
KR101230226B1 (en) * 2010-12-01 2013-02-05 삼성에스디아이 주식회사 Battery case and battery pack using the same
JP2018179938A (en) * 2017-04-21 2018-11-15 矢崎総業株式会社 Temperature sensor and battery pack
JP2019039834A (en) * 2017-08-25 2019-03-14 矢崎総業株式会社 Temperature sensor
JP2019100952A (en) * 2017-12-06 2019-06-24 矢崎総業株式会社 Housing structure for temperature sensor and battery pack

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JPH11248542A (en) * 1998-03-05 1999-09-17 Nippon Sanso Kk Method for measuring surface temperature of metal and cryogenic container
JPH11304599A (en) * 1998-04-15 1999-11-05 Mitsui Mining & Smelting Co Ltd Temperature sensor
JP2005134119A (en) * 2003-10-28 2005-05-26 Matsushita Electric Works Ltd Thermal detector element

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Publication number Priority date Publication date Assignee Title
JPH0680141U (en) * 1993-04-20 1994-11-08 株式会社ブリヂストン Temperature sensor
JPH11248542A (en) * 1998-03-05 1999-09-17 Nippon Sanso Kk Method for measuring surface temperature of metal and cryogenic container
JPH11304599A (en) * 1998-04-15 1999-11-05 Mitsui Mining & Smelting Co Ltd Temperature sensor
JP2005134119A (en) * 2003-10-28 2005-05-26 Matsushita Electric Works Ltd Thermal detector element

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Publication number Priority date Publication date Assignee Title
KR101230226B1 (en) * 2010-12-01 2013-02-05 삼성에스디아이 주식회사 Battery case and battery pack using the same
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JP2012237723A (en) * 2011-05-13 2012-12-06 Hitachi Vehicle Energy Ltd Electrical storage device
JP2018179938A (en) * 2017-04-21 2018-11-15 矢崎総業株式会社 Temperature sensor and battery pack
JP2019039834A (en) * 2017-08-25 2019-03-14 矢崎総業株式会社 Temperature sensor
JP2019100952A (en) * 2017-12-06 2019-06-24 矢崎総業株式会社 Housing structure for temperature sensor and battery pack

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