JP4791416B2 - Temperature detector mounting structure - Google Patents

Description

  The present invention relates to a temperature detector mounting structure for detecting the temperature of, for example, a battery of a high-voltage battery pack of an electric vehicle including a hybrid car.

  FIG. 6 shows one form of a conventional temperature detector mounting structure (see Patent Document 1).

  This temperature detector mounting structure is a voltage measurement terminal connected to the electrode 54 of the battery 52 in a bus bar module 53 that connects a plurality of batteries 52 constituting a high voltage battery pack 51 of an electric vehicle including a hybrid car in series. A lead terminal 56a of a PTC thermistor 56 as a temperature detector is connected to an intermediate portion of 55 by soldering.

  The bus bar module 53 is obtained by fixing a plurality of conductive metal plate bus bars 58 to an insulating resin plate 57. The PTC thermistor 56 of this example is an overcurrent prevention resistance element whose resistance increases as the temperature rises.

  FIGS. 7A and 7B show another form of a conventional temperature detector mounting structure (see Patent Document 2).

  This temperature detector mounting structure is such that a temperature sensor (thermistor) 62, which is a temperature detector, is fixed to each battery (battery module) 60 constituting a high-voltage battery pack 59 of a hybrid car via a thermal coupling member 61. is there. The lead wire 63 of the temperature sensor 62 is soldered to the printed circuit board 64, and the printed circuit board 64 is connected to the voltage detection circuit 65 with a cable 66. The output terminal 67 of the battery 60 is connected to the voltage detection circuit 65 via the printed circuit board 64.

  The voltage detection circuit 65 outputs a signal from the temperature sensor 62 to a control circuit (not shown). The control circuit detects the surface temperature of the battery 60 from this signal, and when the temperature of the battery 60 becomes higher than a set value, The charging / discharging current of the battery 60 is limited or cut off to prevent the battery temperature from rising.

  8 (a) and 8 (b) show other forms of a conventional temperature detector mounting structure.

  In this temperature detector mounting structure, a pair of inverted V-shaped flexible arms 70 made of synthetic resin are provided outside the thermistor 68 so that the thermistor 68 as the temperature detector is brought into direct contact with the surface of the battery 69. The claw portion 71 at the tip of each arm 70 is engaged with the claw portions 73 of the resin plates 72 on both sides of the battery 69.

As shown in FIG. 8B, the lead wire 73 of the thermistor 68 is connected to the terminal 74, and is connected to the PCB connector 77 of the ECU 76 via the connector 75 that houses the terminal 74. The ECU is an electronic control unit and has a printed circuit board, and the PCB is a printed circuit board.
Japanese Patent Laying-Open No. 2004-95381 (FIG. 2) JP 2006-73362 A (FIGS. 2 and 4)

  However, the conventional temperature detector mounting structure of FIG. 6 has a problem that it takes much time to connect and fix the temperature detector 56 to the terminal 55 by soldering. In the conventional temperature detector mounting structure shown in FIG. 7, since the temperature detector 62 is contacted and fixed to the battery 60 via the thermal coupling member 61, the mounting takes a lot of man-hours and the temperature There was concern that the detection accuracy could be reduced.

  In the conventional temperature detector mounting structure shown in FIG. 8, the temperature detector 68 can be locked to the battery side with a pair of arms 70, for example, the position of the surface 69 a of the battery 69. When the temperature detection body 68 is locked by the pair of arms 70, the detection surface 68a of the temperature detection body 68 floats from or comes into contact with the surface 69a of the battery 69 when the temperature detection body 68 is locked in the height direction. There were concerns that the detection could not be performed well and the temperature detection accuracy could be reduced. Further, there is a concern that the arm 70 may be bent inward by vibration of the vehicle and the locking may be released unexpectedly.

  In the present invention, in view of the above points, even if the position of the battery (object to be detected) varies, the temperature detector can be reliably brought into contact with the battery, and the temperature detector can be abruptly fixed by vibration or the like. An object of the present invention is to provide a temperature detector mounting structure that is not released.

  In order to achieve the above object, a temperature detection body mounting structure according to claim 1 of the present invention includes an enclosure portion that covers the temperature detection body, and a portion that protrudes vertically from the enclosure portion and then bends in the lateral direction. A pair of flexible parts and a lock part following each flexible part, and the lock part is placed on the locked part on the detected object side while the temperature detecting body is in contact with the detected object in the vertical direction. In the engaged state, the flexible part is elastically bent in the vertical direction.

  With the above configuration, the temperature detecting body is brought into contact with the detected body, and at the same time, the lock portion is engaged with the locked portion with one touch, and the temperature detecting body is pressed against the detected body by the elastic force of the flexible portion without rattling. And stick closely. The flexible portion absorbs the positional deviation in the vertical direction of the temperature detection body. In addition, the flexible portion also exerts a large elastic force in the direction perpendicular to the vertical and horizontal directions, and the lock portion is pressed against the locked portion by this elastic force (preferably pressed inward from the outside), so that the lock portion Unintentional release is prevented.

  The temperature detection body mounting structure according to claim 2 is the temperature detection body mounting structure according to claim 1, wherein the flexible portion is bent in a direction intersecting the vertical and horizontal directions, and the locking portion and the locked portion are arranged. The engagement is performed.

  With the above configuration, the flexible portion bends in the vertical direction to absorb the variation in position of the detection target, and bends in a direction intersecting the vertical and horizontal directions, so that the lock portion and the locked portion are smoothly engaged.

  A temperature detection body mounting structure according to a third aspect is the temperature detection body mounting structure according to the first or second aspect, wherein the flexible portion is bent in a meandering manner.

With the above-described configuration, the flexible portion is smoothly compressed with a large stroke in a direction opposite to the direction in which the temperature detection body is brought into contact with the detected body, and is extended with a large stroke in the direction in which the flexible portion is brought into contact. The temperature detection body mounting structure according to any one of claims 1 to 3, wherein the temperature detection body mounting structure according to any one of claims 1 to 3 can cope with a large positional variation amount of the detection target body by a large vertical stroke. The pair of flexible portions are arranged rotationally symmetrically.

  With the above configuration, when the lock portion is engaged with the locked portion and the temperature detection body is pressed against the detection body by the elastic force of the flexible portion, the pressing force is applied at two locations in the diagonal direction of the temperature detection body. By acting evenly, the contact of the temperature detection body with the detection target body is prevented.

  The temperature detection body mounting structure according to claim 5 is the temperature detection body mounting structure according to any one of claims 1 to 4, wherein the lock portion engages the locked portion from the outside, and The flexible portion is inclined outward.

  With the above configuration, even when the lock part is pushed inward from the outside or an inward force is applied due to vibration or the like, the lock part is engaged with the locked part from the outside inward, so the lock is released. Does not happen. Unlocking is performed by applying an outward force to the lock portion. Further, since the flexible portion is elastically deformed, an upward inward force is applied to the lock portion, and the lock portion is reliably engaged with the locked portion. The total length of the flexible portion is set long, and the height (vertical distance) of the flexible portion is kept low. Further, the elastic force and the bending stroke in the direction intersecting the vertical and horizontal directions of the flexible portion increase, and the engagement between the lock portion and the locked portion becomes smooth, and the vertical and horizontal directions of the lock portion and the locked portion The position variation in the intersecting direction is absorbed.

  The temperature detection body mounting structure according to claim 7 is the temperature detection body mounting structure according to any one of claims 1 to 6, wherein the lock portions are arranged in a rotationally symmetrical manner, and the claws of the locked portions are arranged. The portion is in contact with the side end surface of the concave portion of each lock portion.

  With the above configuration, the temperature detection body is evenly fixed to the locked portion at two locations in the diagonal direction, so that the temperature detection body is prevented from being displaced in the twisting direction, and the temperature detection body contacts the detection target body. Increases nature.

  According to the first aspect of the present invention, even if the positions of the detected objects are shifted (even if the positions of the detected objects vary), the flexible portion absorbs the variation in position, and the temperature detecting body is Since the object to be detected is brought into elastic contact with reliability, the temperature detection accuracy is improved, and the object to be detected can be managed and controlled accurately. In addition, the flexible portion exhibits an elastic force in a direction perpendicular to the vertical and horizontal directions, and the lock portion is brought into contact with the locked portion by this elastic force, thereby preventing an unexpected unlock due to vibration or the like.

  According to the second aspect of the present invention, the flexible portion bends in a direction intersecting the vertical and horizontal directions, so that the engagement between the lock portion and the locked portion can be performed easily, smoothly and reliably.

  According to the third aspect of the present invention, since the flexible portion smoothly expands and contracts in the vertical direction with a large stroke, even when the position variation of the detected body is large, the temperature detecting body is surely brought into contact with the detected body. The temperature can be detected accurately.

  According to the fourth aspect of the present invention, the temperature detecting body is pressed against the detected body from both sides by the pair of rotationally symmetric flexible portions, so that the temperature detecting body is prevented from hitting the detected body with respect to the detected body. The body comes into contact with the body to be detected over a large area, and the temperature detection accuracy increases.

According to the invention of claim 5, even if the lock part is pushed inward due to interference or vibration with the outside, no unlocking occurs, so the temperature detection body does not come off from the detection object, The reliability of temperature detection is improved. Further, since the flexible portion is elastically deformed, an inwardly upward force is applied to the lock portion and the lock portion is reliably engaged with the locked portion, so that the reliability of the lock is improved. Moreover, the mounting structure is made compact by keeping the height of the flexible part low while ensuring the elasticity of the flexible part. Moreover, even if the positions of the lock part and the locked part vary, the flexible part bends in a direction intersecting the vertical and horizontal directions to absorb variations in the position, and the lock can be performed reliably. Thereby, the unexpected lock release by vibration etc. is prevented.
Unlocking is prevented and the reliability of temperature detection is improved.

  According to the sixth aspect of the present invention, the temperature detection body is evenly fixed to the locked portion at two diagonal positions, so that the locking is surely performed and the temperature detection body is displaced in the torsional direction. Is prevented, and the reliability of temperature detection is increased.

  1 to 3 show an embodiment of a temperature detector mounting structure according to the present invention.

  The mounting structure of this temperature detection body is such that the thermistor 1 which is a temperature detection body (temperature sensing element) is covered with a rectangular block-shaped enclosure portion 4 made of an insulating resin, and meanders in a substantially S shape on both the left and right sides of the enclosure portion 4. The lock portions 3 and 3 ′ are provided through the flexible portions 2 and 2 ′, the hole 6 for inserting the surrounding portion 4 is provided in the base plate (resin component) 5 on the battery side, and the left and right sides of the hole 6 are On both sides, a locked portion 9 having an outward claw portion 8 that engages the concave portion 7 of each lock portion 3, 3 ′ protrudes upward.

  As shown in FIGS. 1 and 3 (reference numerals are given in detail in FIG. 3), the surrounding portion 4 is resin-molded outside the thermistor 1, and the protruding walls 10 a facing outward are formed on the upper half of the left and right side walls 10 of the surrounding portion 4. Are integrally formed, and a pair of left and right rotationally symmetric flexible portions 2 and 2 ′ are formed to protrude upward from the upper surface of each protruding wall 10 a, and the vertical cross section is substantially inverted L-shaped at the upper end portion of each flexible portion 2 and 2 ′. The lock portions 3 and 3 ′ are provided in a rotationally symmetrical manner following the integral lock portions 3 and 3 ′. Two lead wires (signal lines) 11 are led upward from the thermistor 1 and connected to an ECU (not shown).

  Each flexible portion 2 includes a short rising portion (vertical portion) 12 protruding upward from the upper wall surface of the surrounding portion 4, and forward or backward from the rising portion 12 (one flexible portion 2 faces forward, the other The lower flexible portion 2 'is curved and extends horizontally, and the lower horizontal portion 13 faces backward or forward (one flexible portion 2 is rearward and the other flexible portion 2' is flexible). The portion 2 'is folded in a U-shape (forwardly), and the middle horizontal portion 15 extending horizontally (the folded bent portion is indicated by reference numeral 14) and the middle horizontal portion (both horizontal portions 13, 15 are parallel) 15 is folded upward in a U-shape (one folded portion 2 is directed forward and the other flexible portion 2 ′ is directed rearward) from the front or rear side (the folded portion is indicated by reference numeral 16). It is comprised by the horizontal part 17 (each horizontal part 13,15,17 is parallel).

  The upper horizontal part 17 continues in the same plane perpendicular to the narrow part 19 of the upper wall 18 of the lock part 3, 3 '. It is also possible to form the narrow portion 19 so as to be able to be bent and to be a part of the flexible portions 2 and 2 ′. The lock portions 3 and 3 ′ are arranged adjacent to (adjacent to) the outside of the flexible portions 2 and 2 ′ via the narrow portions 19. The left and right lock portions 3, 3 'are formed rotationally symmetrically about the thermistor axis as in the flexible portions 2, 2'.

  The lock portions 3 and 3 ′ are a horizontal upper wall 18 including a narrow portion 19, a vertical side wall 20 depending from the upper wall 18, and a horizontal penetrating left and right provided on the lower half side of the side wall 20. A groove-like recess 7 is provided. The concave portion 7 of one lock portion 3 is notched forward from the rear end surface of the side wall 20, and the concave portion 7 of the other lock portion 3 ′ is notched rearward from the front end surface of the side wall 20. The concave portion 7 is reinforced by being connected by a substantially U-shaped connecting wall 21 in the vertical direction on the front or rear notch opening side, and the concave portion 7 penetrates the side wall 21 in a hole shape to the left and right except for the portion of the connecting wall 21. is doing. The claw portion 8 outside the lock portion 9 enters the recess from the hole penetrating portion. The connecting wall 21 protrudes inward within the range of the width of the narrow portion 19 of the upper wall 18 of the lock portions 3, 3 ′.

  The lower end surfaces of the lock portions 3, 3 ′ are located slightly below the upper surface of the surrounding portion 4, and the lower end surfaces of the recessed portions 7 are positioned on a horizontal plane substantially equal to the upper surface of the surrounding portion 4, and the flexible portions 2, 2 'Protrudes from the upper surface of the surrounding part 4 at substantially the same height as the surrounding part 4, and the upper end of the concave part 7 is located at an intermediate height between the flexible parts 2, 2 ′. The lower end surface 7a of the recess 7 acts as a locking surface having a relatively large area with respect to the locked portion 9 on the battery side. The width in the front-rear direction of the flexible portions 2, 2 ′ and the lock portions 3, 3 ′ is equal to the width of the surrounding portion 4.

  As shown in FIG. 3 (c), the flexible portions 2 and 2 'of this example are slightly outwardly opened from the middle folded bent portion 14 and inclined in a reverse C shape. Accordingly, the total length of the flexible portions 2 and 2 ′ is set to be long and the height of the flexible portions 2 and 2 ′ is suppressed to be low, and the displacement of the locked portion 9 on the battery side in FIG. 1 is absorbed. The left and right side elasticity (flexibility) is imparted to the flexible portions 2 and 2 '. It is also possible to form the flexible portions 2 and 2 'on one vertical surface over the entire length. Even in this case, the flexible portions 2 and 2 ′ have left-right flexibility (elasticity). Further, the flexible portions 2 and 2 'have elasticity in the vertical direction. In the present specification, the directions of up, down, front, back, left, and right are merely for convenience of description, and do not necessarily coincide with the mounting direction of the temperature detector 1.

  In this example, the upper wall 18 of the other lock portion 3 ′ protrudes outwardly from the upper wall 18 of the one lock portion 3 in a hook shape. Function as. As in the other embodiment shown in FIG. 4, the flanges 22 may be provided on both lock portions 3, 3 ′.

  The flexible portions 2 and 2 'can be easily formed by punching in the front-rear direction of resin molding. Similarly, the concave portions 7 of the lock portions 3 and 3 ′ are formed by die cutting in the front-rear direction, and other portions of the lock portions 3 and 3 ′ are formed by die cutting in the vertical direction. In this way, the surrounding portion 4, the flexible portions 2, 2 ′, and the lock portions 3, 3 ′ on the outer periphery of the thermistor 1 are easily integrally molded with resin. The thermistor 1, the surrounding portion 4, the flexible portions 2, 2 ′, and the lock portions 3, 3 ′ constitute a thermistor assembly (temperature detection body assembly) 23. The thermistor 1 and the surrounding part 4 constitute a temperature detection main part 24.

  The temperature detection body mounting structure of the embodiment shown in FIG. 4 is obtained by simplifying the flexible portions 2 and 2 ′ of the embodiment of FIG. 1. Since the other configuration is the same as the configuration in FIG. 1, the same components are denoted by the same reference numerals and detailed description thereof is omitted.

  The flexible portions 24 and 24 ′ in the embodiment of FIG. 4 include a rising portion 25 that is raised substantially vertically (inclined outward) from the upper wall surface of the surrounding portion 4, and laterally from the rising portion 25. It is composed of an intermediate horizontal portion 26 that continues to bend, a bent portion 27 that continues to curve outward from the horizontal portion 26 in an orthogonal direction, and a narrow portion (upper horizontal portion) 28 that follows the bent portion 27. Yes.

  The rising portion 25 and the intermediate horizontal portion 26 are formed in a substantially L-shaped plate shape and can be bent in the left-right direction (plate thickness direction). The narrow part 28 forms part of the upper wall 18 of the lock part 3, 3 '. The configuration of the lock portions 3 and 3 'is the same as that of the previous example except that the lock portions 22 are provided on both sides. The left and right flexible portions 24, 24 'are formed to be rotationally symmetric about the thermistor axis.

  1 and 4, the flexible portions 2, 2 ', 24, 24' and the lock portions 3, 3 'are arranged rotationally symmetrically about the thermistor axis (axis), so that a pair of left and right The lock portions 3 and 3 ′ are securely and securely engaged with each of the locked portions 9 (FIG. 1) on the battery side with a wide contact area without twisting, tilting, or contact with each other.

  As shown in FIG. 1, the locked portion 9 on the battery side is formed integrally with a base plate (resin component) 5. As the base plate 5, for example, a resin portion of a bus bar module is suitable. In this case, the bus bar module includes a base plate 5 made of an insulating resin and a plurality of plate-like bus bars (not shown) made of conductive metal disposed on the top side of the base plate 5. The electrode terminals of adjacent batteries (not shown) are connected in series by each bus bar.

  The locked portion 9 includes a support column 29 that is vertically raised from the upper surface of the base plate 5, and a pair of claw portions 8 that are formed to project from the tip of the support column 29 to the left and right (inside and outside). Of the pair of claws 8, the outward claws 8 engage with the recesses 7 of the lock parts 3, 3 ′. The base plate 5 is provided with rectangular holes 6 that allow the respective surrounding portions 4 to enter and engage in parallel at equal pitches. The hole 6 communicates with the slits 32 of the front and rear wall portions 30 and 31 at an intermediate portion, and the rear wall portion 31 continues integrally with, for example, a frame-shaped connecting wall 33. The inward claw portion 8 is used when the surrounding portion 4 of the thermistor assembly 23 is engaged with the adjacent hole portion 6.

  A support column 29 is erected on the upper surface of a horizontal wall 34 that connects the front and rear walls 30, 31 between the holes 6, and the claw 8 is located above the hole 6 and on the inner side surface 6 a of the hole 6. It protrudes slightly inward than it is. Each claw portion 6 has an upper inclined guide surface 8a and a lower horizontal locked surface 8b. The locked surface 8b is formed with a relatively large area, like the locking surface 7a of the lock portions 3 and 3 '. The upper surface of a battery (not shown) is exposed below the hole 6.

  As shown in FIG. 2, the thermistor assembly 23 is mounted on the base plate 5 from above. That is, the lower half of the surrounding portion 4 including the thermistor 1 engages with the hole 6 and the lower surface of the thermistor 1 comes into surface contact with the upper surface of the battery. The lock portions 3 and 3 ′ are flexible portions 2 and 2 ′ or a narrow portion 19 (with the flexible portion or the narrow portion as a fulcrum while slidingly contacting the guide surface 8a of the outward claw portion 8 of the lock portion 9. ) The concave portion 7 is engaged with the claw portion 8 while being bent outwardly. Simultaneously with this engagement, the lock portions 3 and 3 ′ return inward by the elastic force of the flexible portions 2 and 2 ′ or the narrow portion 19.

  When the lower surface of the thermistor 1 comes into contact with the upper surface of the battery, the substantially S-shaped flexible portions 2 and 2 'are slightly compressed in the vertical direction so that the lower surface of the thermistor 1 is elastically contacted with the upper surface of the battery. In this state, the lock portions 3 and 3 ′ engage with the locked portion 9.

  As described above, since the flexible portions 2 and 2 ′ are bent in the vertical direction, the vertical displacement of the upper surface of the battery is absorbed, and the thermistor 1 is surely brought into surface contact with the battery even if there is a positional deviation. Thus, the temperature detection accuracy is increased. In addition, when the flexible portions 2 and 2 ′ press the lock portions 3 and 3 ′ against the locked portion 9 with the elastic force in the left-right direction, the locking force (locking force) is increased, which is unexpected due to vehicle vibration or the like. Unlocking is prevented. Further, since the flexible portions 2 and 2 'are arranged symmetrically in the left-right direction, the thermistor 1 comes into surface contact with the battery without any vertical contact or lifting, and temperature detection is accurately performed. .

  In FIG. 2, the claw portion 8 of one locked portion 9 abuts on the front side end surface (termination surface) 7 b of the concave portion 7 of one lock portion 3, and the claw portion 8 of the other locked portion 9 is It abuts on the side end surface (end surface) 7b on the rear side of the concave portion 7 of the other lock portion 3 ′. Thereby, the rotation of the thermistor assembly 23 about the thermistor axis in the twisting direction is prevented. This is an effect obtained by arranging the left and right lock portions 3, 3 'in rotational symmetry.

  Further, the outward claw portion 8 enters and engages into the recess 7 of the lock portion 3, 3 ′ from the inside, and the inner surface of the lower half portion 20 a of the side wall 20 of the lock portion is the outer surface of the column portion 29 of the locked portion 9. , Even if the lock portions 3 and 3 ′ interfere with something or are pushed inward by vibration or the like, the lock is not released at all, and the reliability of the lock is improved.

  The unlocking operation is performed by lifting the flange portion 22 of the lock portions 3, 3 ′ so that the recess 7 rotates outward together with the side wall 20 with the narrow portion 19 or the flexible portions 2, 2 ′ as a fulcrum. This is done by moving away from the claw portion 8.

  Each of the above-described functions and effects is not limited to the embodiment of FIG. 1 but can be similarly achieved in the embodiment of FIG. Needless to say, the flexible portions 2 and 2 ′ in FIG. 1 are superior in elastic force and stroke amount in the vertical direction than the flexible portions 24 and 24 ′ in FIG. 4.

  FIGS. 5A to 5C show one form of a high voltage battery pack of an electric vehicle including a hybrid car.

  The resin base plate 5 is disposed in close contact with the upper surface of the battery pack 25, the main portion of the bus bar module 36 is disposed on the base plate 5, and the temperature of the thermistor assembly 23 is inserted into the hole 6 of the base plate 5. The detection main body 24 is inserted and comes into contact with the upper surface of the lower battery 37. The hole 6 is provided in an appropriate number corresponding to the battery 37 at a required position. Each battery 37 is covered with a resin cover 38.

  A plurality of batteries 37 are arranged in two rows in parallel, electrode terminals 39 of the batteries 37 are connected to the bus bars 40 of the bus bar module 36 by welding or the like, and the batteries 37 are connected in series. In FIG. 5, reference numeral 41 denotes a total input / output electrode of the battery pack 35, and 45 denotes an ECU board.

  A JB (junction box) (not shown) is arranged adjacent to the side of the battery pack 35, the total input / output electrodes 41 of the battery pack 35 and JB are connected by a circuit, and the current from the battery pack 35 is a relay of JB. It is distributed (branched) to devices such as hybrid motors, power steering and air conditioners via fuses.

  The lead wire 14 of the thermistor 1 (FIG. 1) is connected to an ECU (electronic control unit), and the signal of the thermistor 1 is sent to the ECU, and the ECU detects the temperature of the battery 37 from this signal. For example, when the temperature of the battery 37 becomes higher than a set value, the charge / discharge current of the battery 37 is limited or cut off to prevent the battery temperature from rising. Each terminal (not shown) for measuring the voltage of each battery 37 is provided in the bus bar module 36. The terminal is connected to the ECU by a lead wire, and the voltage of each battery 37 is detected from the signal of the terminal by the ECU. The

  The battery pack 35 and the bus bar module 36 shown in FIG. 5 are merely examples, and the temperature detector mounting structure can be applied to battery packs and bus bar modules having other configurations.

  In addition, although the attachment structure of the temperature detection body of each said embodiment is for detecting the temperature of the battery 37 of the high voltage | pressure battery pack 35 of a motor vehicle, in addition to a battery as a to-be-detected body (temperature detection object). For example, in order to detect the temperature of a terminal for voltage measurement of the bus bar module 35, a motor, a device, a meter, or the like (not shown), it is possible to apply the temperature detector mounting structure of each of the above embodiments.

  Moreover, in each said embodiment, although the surrounding part 4 which covers the thermistor 1 was formed in the rectangular shape, it can also be formed in the column shape etc. instead of the rectangular shape. In each of the above embodiments, the thermistor 1 is brought into contact with the upper surface of the battery. For example, the thermistor assembly 23 can be set in a state inverted by 90 ° from FIG. It is.

It is a disassembled perspective view which shows one Embodiment of the attachment structure of the temperature detection body which concerns on this invention. It is a perspective view which similarly shows the attachment state of a temperature detection body. An embodiment of a temperature detector assembly is shown, (a) is a plan view, (b) is a sectional view taken along line AA of (c), (c) is a front view, and (d) is a side view. It is a perspective view which shows other embodiment of a temperature detection body assembly. 1A and 1B show one embodiment of a battery pack to which a temperature detection body mounting structure is applied, FIG. 3A is a perspective view, FIG. 3B is a plan view, and FIG. It is sectional drawing which shows one form of the attachment structure of the conventional temperature detection body. The other form of the attachment structure of the conventional temperature detection body is shown, (a) is a front view, (b) is a side view. The other form of the attachment structure of the conventional temperature detection body is shown, (a) is an exploded front view, (b) is a front view of an attachment state.

Explanation of symbols

1 Thermistor (temperature detector)
2, 2 ', 24, 24' Flexible part 3, 3 'Locking part 4 Enclosing part 7 Recessed part 7b Side end face 8 Claw part 9 Locked part 37 Battery (detected body)

Claims (6)

  The temperature detection unit includes a surrounding portion that covers the temperature detection body, a pair of flexible portions that protrude in the vertical direction from the surrounding portion, and then has a bent portion in the horizontal direction, and each lock portion that follows each flexible portion. The flexible portion is elastically bent in the vertical direction in a state in which the lock portion is engaged with the locked portion on the detected body side while the body is in contact with the detected body in the vertical direction. Mounting structure for temperature detector.   The temperature detecting body mounting structure according to claim 1, wherein the flexible portion is bent in a direction intersecting the vertical and horizontal directions so that the lock portion and the locked portion are engaged.   3. The temperature detecting body mounting structure according to claim 1, wherein the flexible portion is bent in a meandering manner.   The temperature detection body mounting structure according to any one of claims 1 to 3, wherein the pair of flexible portions are arranged rotationally symmetrically.   The temperature detector according to any one of claims 1 to 4, wherein the lock portion engages the locked portion from the outside, and the flexible portion is inclined outward. Construction.   The temperature detector according to any one of claims 1 to 5, wherein the lock portions are arranged in a rotationally symmetrical manner, and the claw portions of the locked portions are in contact with the side end surfaces of the concave portions of the lock portions. Mounting structure.

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