CN110608807A - Mounting structure of exhaust gas temperature sensor - Google Patents
Mounting structure of exhaust gas temperature sensor Download PDFInfo
- Publication number
- CN110608807A CN110608807A CN201910516673.5A CN201910516673A CN110608807A CN 110608807 A CN110608807 A CN 110608807A CN 201910516673 A CN201910516673 A CN 201910516673A CN 110608807 A CN110608807 A CN 110608807A
- Authority
- CN
- China
- Prior art keywords
- exhaust gas
- temperature sensor
- gas temperature
- resin case
- mounting structure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 229920005989 resin Polymers 0.000 claims abstract description 42
- 239000011347 resin Substances 0.000 claims abstract description 42
- 238000001514 detection method Methods 0.000 claims abstract description 18
- 239000000463 material Substances 0.000 claims abstract description 8
- 239000007789 gas Substances 0.000 claims description 60
- 239000000853 adhesive Substances 0.000 claims description 17
- 230000001070 adhesive effect Effects 0.000 claims description 17
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical class [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 12
- 239000003546 flue gas Substances 0.000 claims description 12
- 238000009529 body temperature measurement Methods 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical group [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims 1
- 239000000779 smoke Substances 0.000 description 12
- 230000004044 response Effects 0.000 description 4
- 230000004043 responsiveness Effects 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007598 dipping method Methods 0.000 description 2
- 239000010408 film Substances 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 229920006223 adhesive resin Polymers 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- 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
Landscapes
- 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
The mounting structure of the exhaust gas temperature sensor mounted on the exhaust gas path into which gas discharged from the unit cells included in the battery pack to which the plurality of unit cells are connected flows is characterized in that the exhaust gas temperature sensor includes a detection portion formed by covering a temperature measuring element for detecting the temperature of the gas with a resin material, the exhaust gas temperature sensor is disposed in a resin case and is held in a state in which the detection portion protrudes to the outside of the resin case, the exhaust gas temperature sensor is mounted on the exhaust gas path, and the detection portion protrudes into the exhaust gas path by a proper protruding amount.
Description
Technical Field
The present invention relates to a mounting structure of a temperature sensor, which is mounted on a smoke exhaust path into which gas discharged from a cell of an assembled battery flows.
Background
For example, as a battery pack that is mounted on a vehicle such as an electric vehicle or a hybrid electric vehicle and used as a drive source, there is a battery pack disclosed in japanese patent application laid-open No. 2018-26308. As shown in fig. 6 to 8, the battery pack (battery module) 1 includes: a plurality of substantially cylindrical single cells (battery cells) 2 connected in parallel; a battery holder 3 in which a housing hole 3a and a smoke exhaust passage 3b are formed so as to penetrate the lower end side of the negative electrode of each unit cell 2; a negative electrode bus bar 4 in which a circular recess 4a and a smoke exhaust passage 4b, which are in contact with the negative electrode of each unit cell 2, are formed; a smoke evacuation chamber cover 5 covering the negative electrode bus bar 4 and having a smoke evacuation chamber 5 b; a side cover 6 having a holding opening 6b in the ceiling portion 6a for passing through and holding the upper end side of the positive electrode of each cell 2; a positive electrode bus bar 7 with which the positive electrode of each single cell 2 is in contact; and an upper lid 8 covering the positive electrode bus bar 7.
As shown in fig. 8, the smoke evacuation path K of the battery pack 1 is formed by the smoke evacuation chamber 5b of the smoke evacuation chamber cover 5, the smoke evacuation passage 4b of the negative electrode bus bar 4, and the smoke evacuation passage 3b of the battery holder 3. In the assembled battery 1, the temperature of the gas G discharged from the unit cells 2 passing through the exhaust path K is measured by the exhaust gas temperature sensor 9 provided in the exhaust duct 3b of the battery bracket 3.
Disclosure of Invention
However, the conventional exhaust gas temperature sensor 9 is mounted on the wall surface side of the battery holder 3 forming the exhaust gas passage K, not near the center of the exhaust gas passage K, and the amount of protrusion thereof is not managed. On the wall surface side, since friction and pressure loss act on the exhaust gas G, the response of the exhaust gas temperature sensor 9 attached to the wall surface side and not yet controlled in the amount of protrusion thereof is slow, and accurate exhaust gas detection is difficult. In particular, the response is poor in order to rapidly increase and decrease the temperature of the detection gas G in a short time.
Therefore, an object of the present invention is to provide a mounting structure of a rapid response exhaust gas temperature sensor capable of measuring the temperature of a gas flowing instantaneously at a high temperature.
A mounting structure of a flue gas temperature sensor according to an aspect of the present invention is a mounting structure of a flue gas temperature sensor mounted on a flue gas passage into which gas discharged from a single cell included in an assembled battery in which a plurality of single cells are connected flows, the mounting structure of the flue gas temperature sensor including a detection portion formed by covering a temperature measurement element that detects a temperature of the gas with a resin material, the flue gas temperature sensor being disposed in a resin case and held in a state in which the detection portion protrudes outside the resin case, the flue gas temperature sensor being mounted on the flue gas passage, the detection portion protruding by a predetermined amount in the flue gas passage.
ADVANTAGEOUS EFFECTS OF INVENTION
According to the mounting structure of the exhaust gas temperature sensor having the above-described configuration, the detection portion of the exhaust gas temperature sensor in which the temperature measurement element is covered with the resin material is mounted so as to project by the full length into the exhaust gas path of the battery pack, and thus the temperature of the gas flowing through the exhaust gas path can be accurately detected and measured in a short time.
Drawings
Fig. 1 is a sectional view showing a mounting structure of an exhaust gas temperature sensor according to embodiment 1.
Fig. 2 is a perspective view showing a state before the exhaust gas temperature sensor according to embodiment 1 is fixed to a resin case.
Fig. 3 is an explanatory diagram for comparing the protrusion amount and the responsiveness of the exhaust gas temperature sensor according to embodiment 1.
Fig. 4 is a front view showing a state before the exhaust gas temperature sensor according to embodiment 2 is fixed to a resin case.
Fig. 5 is a front view showing a state in which the exhaust gas temperature sensor according to embodiment 2 is fixed to a resin housing.
Fig. 6 is an exploded perspective view of a conventional battery pack.
Fig. 7 is a perspective view of the conventional battery pack.
Fig. 8 is an explanatory view showing a main part of the conventional battery pack in cross section.
Detailed Description
Embodiments of the present invention will be described below with reference to the drawings. The dimensions, materials, specific numerical values and the like shown in the embodiments are merely examples, and the present invention is not limited thereto unless otherwise specified. Note that elements having substantially the same function and configuration are denoted by the same reference numerals, and overlapping description thereof is omitted, and elements not directly related to the present invention are omitted from illustration.
Fig. 1 is a sectional view showing a mounting structure of an exhaust gas temperature sensor of embodiment 1; fig. 2 is a perspective view showing a state before the exhaust gas temperature sensor is fixed to a resin case; fig. 3 is an explanatory diagram for comparing the protrusion amount and the responsiveness of the exhaust gas temperature sensor.
As shown in fig. 1, a mounting structure 10 of a flue gas temperature sensor 11 is mounted on a flue gas passage K into which gas G discharged from a cell 2 of a battery pack (battery module) 1 in which a plurality of cells (battery cells) 2 such as lithium batteries are connected in parallel flows. The mounting structure 10 of the exhaust gas temperature sensor 11 includes: a smoke temperature sensor 11 having a sensor body 12; a synthetic resin (resin) case 20 for fixing the sensor body 12 of the exhaust gas temperature sensor 11.
As shown in fig. 1 and 2, the sensor body 12 of the exhaust gas temperature sensor 11 includes: a detection unit 13 for covering the NTC thermistor 15, which is an element having negative temperature characteristics, i.e., a temperature rise resistance value is reduced, and the ends 16a of a pair of leads 16 connected thereto with a thin (film) adhesive (resin material) 14; a body portion 17 in which the periphery of a portion (a welded portion in fig. 1 is denoted by reference numeral H) where the base ends 16b of the pair of lead wires 16 and the core wire portions 18a of the pair of electric wires 18 are connected by welding is covered with a thin-walled (thin-film) adhesive 14.
That is, the sensor body 12 is formed by immersing the distal end sides of a pair of wires 18 to which the NTC thermistor 15 is connected via a pair of wires 16 in a groove filled with the adhesive 14. In this case, although the shape and size of the sensor body 12 are more different than those of a synthetic resin material molded product or the like, the film thickness can be controlled to be thin depending on the dipping conditions. If the sensor body 12 is formed by immersing in a groove filled with the adhesive 14, a short circuit between the pair of leads 16 of the NTC thermistor 15 can be prevented even with a thin film. In addition, by managing the dipping conditions, the NTC thermistor 15 can be prevented from being deformed or bent. The body 17 of the sensor body 12 formed by impregnating the adhesive 14 is disposed in the resin case 20, and is integrated with the resin case 20 by the adhesive 23.
As shown in fig. 1 and 2, the resin case 20 is formed to have a concave cross section by a bottom wall portion 21 and a pair of side wall portions 22 vertically standing from both end sides of the bottom wall portion 21. When the longitudinal direction of the resin case 20 having the concave cross section is defined as the front-rear direction, concave portions 21b and 22b are provided at the center sides of the bottom wall portion 21 and the two side wall portions 22, respectively, so as to be recessed more than the front-rear side. Specifically, as shown in fig. 1, on the surfaces of the pair of side walls 22 and the bottom wall 21 formed in a concave shape, the bottom surface of the central concave portion 21b is lower in height from the back surface side of the bottom wall 21 than the front bottom surface 21 a. The rear bottom surface 21c is higher than the front bottom surface 21a in height from the rear side of the bottom wall 21. As shown in fig. 2, the inner surface of the central recess 22b is recessed from the inner surface 22c on the rear side on the surface of the side wall 22 forming a concave shape together with the bottom wall 21 and the other side wall 22. Also, the rear inner surface 22c is recessed from the front inner surface 22 a.
By applying the adhesive 23 to the recesses 21b and 22b in the center of the resin case 20 and integrating the body 17 of the sensor body 12 with the resin case 20, the detection part 13 of the sensor body 12, which is formed by covering the NTC thermistor 15 with the thin adhesive 14, protrudes outward from the front surface 20a of the resin case 20 by the amount corresponding to the protrusion amount (protrusion length) L. As shown in fig. 1, when the sensor body 12 of the exhaust gas temperature sensor 11 is attached to the opening N of the wall portion M of the exhaust gas passage K of the battery pack 1 via the resin case 20, the front surface 20a of the resin case 20 and the inner surface of the exhaust gas passage K are attached in a state where there is substantially no step, and the detection portion 13 in which the NTC thermistor 15 is covered with the thin adhesive 14 is attached in a state where the actual protruding amount L is secured with respect to the exhaust gas passage K. That is, when the adhesive 23 is applied to the recesses 21b and 22b in the center of the resin case 20 and the body 17 of the sensor body 12 is integrally fixed, as shown in fig. 3, the amount of protrusion of the detection portion 13 from the front surface 20a of the resin case 20 is set in advance to a formal amount of protrusion L that can measure the temperature increase amount close to the actual temperature of the gas G flowing through the exhaust path K so that the amount of protrusion L with respect to the exhaust path K is not insufficient. In the case of the present embodiment, for example, the actual protrusion amount L is 6mm and integrated so that the temperature rise after 3 seconds of the response of the exhaust gas temperature sensor is 10 ℃.
Further, recesses 21b and 22b lower than the front and rear sides are formed in the center sides of the bottom wall portion 21 and the two side wall portions 22 of the resin case 20, respectively. Therefore, when the body portion 17 side of the sensor body 12 is integrated with the resin case 20 and firmly fixed, the adhesive 23 is applied to the recesses 21b and 22b in the center of the resin case 20, and thus the adhesive 23 is less likely to leak from the front and rear sides of the resin case 20.
The assembled battery 1 is used as a drive source mounted on a vehicle such as an Electric Vehicle (EV) or a Hybrid Electric Vehicle (HEV).
According to the mounting structure 10 of the exhaust gas temperature sensor 11 of the above embodiment, the detection unit 13 in which the NTC thermistor 15 of the exhaust gas temperature sensor 11 is covered with the thin adhesive 14 is mounted so as to protrude by the predetermined protruding amount L in the exhaust gas passage K of the assembled battery 1, and thus the temperature of the gas G flowing in the exhaust gas passage K can be accurately detected and measured in a short time. That is, the temperature of the gas G flowing instantaneously at a high temperature can be measured reliably in a short time. Further, even when the temperature of the gas G rapidly increases or decreases in a short time, smoke discharge can be detected instantaneously in a short time, and the responsiveness can be further improved.
Fig. 4 is a front view showing a state before the exhaust gas temperature sensor according to embodiment 2 of the present invention is fixed to a resin case; fig. 5 is a front view showing a state in which the exhaust gas temperature sensor is fixed to a resin case.
As shown in fig. 4 and 5, the exhaust gas temperature sensor 11' according to embodiment 2 is different from embodiment 1 in that a pair of locking convex portions 19 are provided on both sides of the body portion 17, and a pair of locking concave portions 24 are provided on both sides of each concave portion 22b in the center of both side wall portions 22 of the resin case 20. Since other configurations are the same as those of embodiment 1, the same components are denoted by the same reference numerals, and detailed description thereof is omitted.
According to the exhaust gas temperature sensor 11' of embodiment 2, the pair of locking protrusions 19 of the body portion 17 and the pair of locking recesses 24 of the side wall portions 22 of the resin case 20 are used to lock the body portion 17 and the resin case 20 to each other, so that the body portion 17 side of the sensor body 12 can be more reliably fixed to the recesses 21b and 22b at the center of the resin case 20. Further, the amount L of protrusion of the detection unit 13 from the exhaust path K, which is formed by covering the NTC thermistor 15 with the thin adhesive 14, can be ensured more reliably.
Further, according to the above embodiments, when the adhesive is applied to the center of the resin case and the trunk portion side of the sensor body is integrally fixed, the recess in the center of the inner surface of the case is formed so as to be recessed from the front and rear surfaces to prevent leakage of the adhesive, and the leakage preventing wall may be provided so as to protrude more to prevent leakage of the adhesive more reliably.
In addition, according to the above embodiments, the NTC thermistor is used as the temperature measuring element, but a PTC thermistor or a CTR thermistor, which has positive temperature characteristics, that is, an element whose resistance value increases as the temperature increases, may be used as the temperature measuring element.
While the preferred embodiments of the present invention have been described above, the present invention is not limited to these embodiments, and various modifications and changes can be made within the scope of the gist of the present invention.
Claims (3)
1. A mounting structure of a flue gas temperature sensor mounted on a flue gas path into which gas discharged from a single cell included in an assembled battery in which a plurality of single cells are connected flows,
the exhaust gas temperature sensor includes a detection unit formed by covering a temperature measurement element for detecting the temperature of the gas with a resin material,
the exhaust gas temperature sensor is disposed in a resin case and is held in a state where the detection portion protrudes outside the resin case,
the exhaust gas temperature sensor is attached to the exhaust gas passage, and the detection unit protrudes in the exhaust gas passage by a predetermined protruding amount.
2. The mounting structure of an exhaust gas temperature sensor according to claim 1,
the resin case includes a bottom wall portion and a pair of side wall portions each having a concave cross section,
a recessed portion recessed more than the front and rear sides is provided at the center side of the bottom wall portion,
the resin case is bonded to the recess with an adhesive, and is integrated with the exhaust gas temperature sensor.
3. The installation structure of exhaust gas temperature sensor according to claim 1 or 2, wherein
The exhaust gas temperature sensor further includes a trunk portion formed by covering at least a lead wire connected to the temperature measuring element with the resin material,
locking convex portions are provided on one of both side portions of the body portion and both side wall portions of the resin case, locking concave portions are provided on the other, and the body portion and the resin case are locked to each other by the locking convex portions and the locking concave portions.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2018-114270 | 2018-06-15 | ||
| JP2018114270A JP7088751B2 (en) | 2018-06-15 | 2018-06-15 | Mounting structure of smoke exhaust temperature sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110608807A true CN110608807A (en) | 2019-12-24 |
Family
ID=68889704
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910516673.5A Pending CN110608807A (en) | 2018-06-15 | 2019-06-14 | Mounting structure of exhaust gas temperature sensor |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP7088751B2 (en) |
| CN (1) | CN110608807A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7434984B2 (en) * | 2020-02-12 | 2024-02-21 | 三菱マテリアル株式会社 | busbar module |
| JP7447551B2 (en) * | 2020-03-02 | 2024-03-12 | 三菱マテリアル株式会社 | busbar module |
| JP7098848B1 (en) * | 2022-01-18 | 2022-07-11 | 株式会社芝浦電子 | Manufacturing method of temperature sensor and temperature sensor |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001056257A (en) * | 1999-08-18 | 2001-02-27 | Matsushita Electric Ind Co Ltd | Temperature sensor element, manufacture thereof and temperature sensor |
| CN102650571A (en) * | 2011-02-25 | 2012-08-29 | 通用电气公司 | System for measuring parameters of fluid flow in turbomachinery |
| CN103443602A (en) * | 2011-01-28 | 2013-12-11 | 株式会社利富高 | Clip for attaching battery temperature sensor |
| CN103492846A (en) * | 2011-03-11 | 2014-01-01 | 可持续能源联合有限责任公司 | Calorimeters for testing energy storage systems and power electronics, methods of making the same and methods of use |
| CN104766432A (en) * | 2015-03-19 | 2015-07-08 | 保定隶都电子科技有限公司 | Smoke and temperature sensing fire disaster detector |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6690461B2 (en) * | 2016-08-12 | 2020-04-28 | トヨタ自動車株式会社 | In-vehicle battery pack control system |
-
2018
- 2018-06-15 JP JP2018114270A patent/JP7088751B2/en active Active
-
2019
- 2019-06-14 CN CN201910516673.5A patent/CN110608807A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001056257A (en) * | 1999-08-18 | 2001-02-27 | Matsushita Electric Ind Co Ltd | Temperature sensor element, manufacture thereof and temperature sensor |
| CN103443602A (en) * | 2011-01-28 | 2013-12-11 | 株式会社利富高 | Clip for attaching battery temperature sensor |
| CN102650571A (en) * | 2011-02-25 | 2012-08-29 | 通用电气公司 | System for measuring parameters of fluid flow in turbomachinery |
| CN103492846A (en) * | 2011-03-11 | 2014-01-01 | 可持续能源联合有限责任公司 | Calorimeters for testing energy storage systems and power electronics, methods of making the same and methods of use |
| CN104766432A (en) * | 2015-03-19 | 2015-07-08 | 保定隶都电子科技有限公司 | Smoke and temperature sensing fire disaster detector |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2019219173A (en) | 2019-12-26 |
| JP7088751B2 (en) | 2022-06-21 |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20191224 |