WO2023166650A1 - 温度センサ、組付体、回転電機、および温度センサの製造方法 - Google Patents

温度センサ、組付体、回転電機、および温度センサの製造方法 Download PDF

Info

Publication number
WO2023166650A1
WO2023166650A1 PCT/JP2022/009093 JP2022009093W WO2023166650A1 WO 2023166650 A1 WO2023166650 A1 WO 2023166650A1 JP 2022009093 W JP2022009093 W JP 2022009093W WO 2023166650 A1 WO2023166650 A1 WO 2023166650A1
Authority
WO
WIPO (PCT)
Prior art keywords
coil
pair
temperature sensor
lead frames
thermal element
Prior art date
Application number
PCT/JP2022/009093
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
孝正 吉原
雅典 桐原
Original Assignee
株式会社芝浦電子
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 株式会社芝浦電子 filed Critical 株式会社芝浦電子
Priority to PCT/JP2022/009093 priority Critical patent/WO2023166650A1/ja
Priority to CN202280006444.9A priority patent/CN116249881A/zh
Priority to JP2022548407A priority patent/JP7212209B1/ja
Publication of WO2023166650A1 publication Critical patent/WO2023166650A1/ja

Links

Images

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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
    • H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
    • H02K11/25—Devices for sensing temperature, or actuated thereby

Definitions

  • the present invention relates to a temperature sensor for detecting the temperature of a coil provided in a vehicle, an assembly, a rotating electrical machine, and a temperature sensor manufacturing method.
  • the temperature of the coil is detected using a temperature sensor attached to the coil in order to avoid an excessive temperature rise in the coil of a rotating electric machine mounted on an electric vehicle.
  • the temperature sensor of Patent Document 1 is attached to a section in which a first coil element and a second coil element, which are both part of the stator coil, are parallel, and the first sensor and the , a second sensor that contacts the second coil element, and a housing that accommodates and holds the first sensor and the second sensor.
  • the first sensor includes a thermosensitive element such as a thermistor, an electric wire drawn from the thermosensitive element, and a covering that makes surface contact with the coil.
  • the same is true for the second sensor.
  • the wires of the first sensor and the wires of the second sensor are each connected to a circuit board or the like via a connector.
  • Such a rotating electrical machine is installed in a vehicle or the like after the temperature sensor is attached to the stator coil. At that time, in order to avoid interference with surrounding members, the rotating electric machine is housed in a predetermined position in the vehicle from a predetermined orientation while appropriately changing its posture. At this time, if the wire connected to the temperature sensor extends without a track, it is difficult to perform the work. Then, after the rotating electric machine is housed in a predetermined position of the vehicle, the electric wires are unbundled and wired. In the assembly process of the rotating electric machine, the complexity of the work related to the wires of the temperature sensor cannot be ignored.
  • the present invention provides a temperature sensor for detecting the temperature of a coil provided in a vehicle, and a temperature sensor and assembly that can contribute to improvement in workability related to incorporation of a device having the temperature sensor into a vehicle.
  • An object of the present invention is to provide a manufacturing method for an attachment, a rotating electrical machine, and a temperature sensor.
  • the present invention is a temperature sensor for detecting the temperature of a coil provided in a vehicle, and includes a thermal element and a pair of electric wires electrically connected to the thermal element and extending from the thermal element in a first direction.
  • a thermal element a pair of lead frames having one end electrically connected to a pair of electric wires and the other end electrically connected to a terminal of a mating connector, a first holding portion holding the thermal element, and a pair of leads.
  • a housing including a second holding portion that holds the frame;
  • Each of the pair of lead frames includes a first portion extending in a first direction from a connection portion with the electric wire, and a second portion continuous from the first portion and extending in a second direction different from the first direction.
  • the second holding portion is formed along the pair of lead frames and integrally includes a fitting portion that fits with the mating connector.
  • the coil includes a first coil element and a second coil element extending in the same direction as the first coil element and positioned opposite the first coil element.
  • the portion comprises a first wall abutting the first coil element and a second wall abutting the second coil element.
  • the first holding portion is formed in a rectangular parallelepiped shape extending in the first direction and arranged between the first coil element and the second coil element of the coil.
  • a pair of coil guides extending along the first direction protrude from both ends in the short direction of at least one of the first wall and the second wall.
  • the pair of guides protrude from both the first wall and the second wall, and both the first coil element and the second coil element are arranged between the pair of guides. is preferred.
  • the first holding part includes a molded body that houses the thermal element and a solidified filler filled inside the molded body, and the thermal element covers the thermal element.
  • a covering material is provided which is housed inside the molded body at .
  • the present invention is an assembly including a temperature sensor for detecting the temperature of a coil provided in a vehicle, wherein the temperature sensor is electrically connected to the heat sensitive body and is electrically connected to the heat sensitive body. a pair of electric wires extending in one direction; a pair of lead frames having one end electrically connected to the pair of electric wires and the other end electrically connected to a terminal of a mating connector; A housing including a first holding portion for holding and a second holding portion for holding the pair of lead frames is provided. Each of the pair of lead frames includes a first portion extending in a first direction from a connection portion with the electric wire, and a second portion continuous from the first portion and extending in a second direction different from the first direction. The housing is formed along the pair of lead frames and integrally has a fitting portion that fits with the mating connector.
  • the assembly includes a temperature sensor and a fixing portion that fixes the temperature sensor arranged on the coil to the coil or to a member provided on the vehicle.
  • the coil includes a first coil element and a second coil element extending in the same direction as the first coil element and positioned opposite the first coil element.
  • the holding portion has a first wall that contacts the first coil element and a second wall that contacts the second coil element, and is fixed to the first coil element and the second coil element by a resin molding. is preferred.
  • the present invention also provides a rotating electric machine provided in a vehicle, wherein a coil, a temperature sensor for detecting the temperature of the coil, and a temperature sensor arranged in the coil are fixed to the coil or to a member provided in the vehicle. and a fixing portion.
  • the temperature sensor includes a thermosensitive element including a thermosensitive element, a pair of electric wires electrically connected to the thermosensitive element and extending in a first direction from the thermosensitive element, one end electrically connected to the pair of electric wires, and the other
  • a housing that includes a pair of lead frames whose ends are electrically connected to terminals of a mating connector, a first holding portion that holds a thermal element, and a second holding portion that holds the pair of lead frames.
  • Each of the pair of lead frames includes a first portion extending in a first direction from a connection portion with the electric wire, and a second portion continuous from the first portion and extending in a second direction different from the first direction.
  • the housing is formed along the pair of lead frames and integrally has a fitting portion that fits with the mating connector.
  • the present invention is a method of manufacturing a temperature sensor for detecting the temperature of a coil provided in a vehicle, the temperature sensor comprising a heat sensitive body, electrically connected to the heat sensitive body and a first temperature sensor from the heat sensitive body. a pair of electric wires extending in a direction and electrically connected to the pair of lead frames; a thermal element having one end electrically connected to the pair of electric wires and the other end electrically connected to terminals of a mating connector. a housing including a pair of lead frames connected to each other, a first holding portion holding a heat-sensitive element, and a second holding portion holding the pair of lead frames and integrally provided with a fitting portion for fitting with a mating connector; , provided.
  • the manufacturing method includes a wire joining step of joining and electrically connecting a pair of lead frames to a pair of wires, and a molded body housing step of housing the thermosensitive element inside the molded body forming the outer shell of the first holding part.
  • the temperature sensor of the present invention and the temperature sensor obtained by the manufacturing method of the present invention are provided with a fitting portion that fits with a mating connector integrally with the housing, and are connected to the heat-sensitive element and extend to the fitting portion. It has a lead frame that functions as a terminal. Therefore, since no electric wire extends from the temperature sensor of the present invention, the device provided with the temperature sensor can be easily installed at a predetermined position in the vehicle without being hindered by the electric wire. According to the present invention, it is possible to eliminate the complicated work of bundling the electric wires before installing the device with the temperature sensor in the vehicle, and furthermore, to unbundle the bundle of electric wires after the installation.
  • the lead frame has a first portion extending in the same first direction as the wire and a second portion extending in a different second direction, and the second holding portion of the housing extends along the pair of lead frames.
  • the degree of freedom in layout design can be improved.
  • the space around the coil of the device mounted on the vehicle is narrow and limited for assembly work. Even under such working conditions, the lead frame and the housing according to the present invention can be provided with a shape and direction that can be reliably assembled without interfering with surrounding members, thus improving assembly workability. can.
  • the manufacturing method of the present invention that is, the step of accommodating the thermosensitive element inside the molded body forming the outer shell of the first holding part, the step of filling the inside of the molded body with the filler, and the step of inserting the lead frame into the mold.
  • the manufacturing method including the step of molding the second holding portion by injection molding, the heat sensitive element is protected by the molded body and the filler during manufacturing, and the lead frame receives a load when mated with the mating connector. can be firmly held in the housing.
  • FIG. 1 is a perspective view showing a temperature sensor assembly according to an embodiment of the invention
  • FIG. (a) is a perspective view showing a temperature sensor and a coil.
  • (b) is a side view shown from the direction of the IIb arrow in (a).
  • (a) is a perspective view showing a temperature sensor.
  • (b) is a plan view of the temperature sensor.
  • (a) is a front view of the fitting part shown from the direction of the IVa arrow of Fig.3 (a).
  • (b) is a sectional view taken along line IVb-IVb of (a).
  • (a) is a Va-Va line sectional view of FIG.3(b).
  • (b) is a cross-sectional view taken along line Vb-Vb of FIG. 3(b).
  • FIG. 10 is a perspective view showing a temperature sensor according to a modification of the present invention.
  • FIG. 8 is a top view of the temperature sensor shown to Fig.8 (a).
  • (a) to (c) are diagrams for explaining a procedure for manufacturing a temperature sensor according to one manufacturing method.
  • 11A and 11B are diagrams for explaining the procedure for manufacturing the temperature sensor following FIG. 10; FIG.
  • a temperature sensor 10 shown in FIGS. 1, 2(a) and 2(b) is attached to coil elements 21 and 22 which are part of a stator coil of a rotating electrical machine mounted on a vehicle such as an electric vehicle.
  • a temperature sensor 10 By controlling the operation of the rotating electric machine based on the temperatures of the coil elements 21 and 22 detected by the temperature sensor 10, an excessive temperature rise of the stator coil can be avoided.
  • the temperature sensor 10 forms an assembly 1 when attached to the coil elements 21 and 22 .
  • the assembly 1 includes the temperature sensor 10, the first coil element 21 and the second coil element 22, and resin molding as a fixing portion for fixing the first coil element 21 and the second coil element 22 to the temperature sensor 10. a body 3;
  • the first coil element 21 and the second coil element 22 are each pulled out from the main body of the stator coil (not shown) in order to detect the temperature of the stator coil.
  • the first coil element 21 and the second coil element 22 have parallel sections 21A and 22A extending in one direction in parallel with each other over at least the illustrated range.
  • the first coil element 21 and the second coil element 22 are simply referred to as the coil elements 21 and 22 when there is no need to distinguish between them.
  • These coil elements 21 and 22 correspond to so-called rectangular wires having a substantially rectangular cross section.
  • the coil elements 21 and 22 are parallel with their planes facing each other.
  • the surfaces of the coil elements 21 and 22 may be covered with an insulating film.
  • the direction in which the coil elements 21 and 22 extend over the parallel sections 21A and 22A is called the x direction (first direction).
  • a direction perpendicular to the x direction in a plan view of the temperature sensor 10 is referred to as a y direction (second direction).
  • the direction orthogonal to both the x-direction and the y-direction is called the z-direction.
  • the coil elements 21 and 22 of this embodiment are arranged in the z direction.
  • the temperature sensor 10 includes a sensor body 11 arranged between the coil elements 21 and 22, and a fitting portion 15 integrated with the sensor body 11. there is The fitting portion 15 is fitted with a mating connector 9 schematically shown in FIG. That is, the temperature sensor 10 having the fitting portion 15 also serves as a connector corresponding to the mating connector 9 .
  • At least part of the sensor body 11 is arranged along the parallel sections 21A, 22A of the coil elements 21, 22 and between the parallel sections 21A, 22A.
  • the fitting portion 15 constitutes a connector for electrically connecting the temperature sensor 10 to, for example, a control circuit of a vehicle control device (not shown).
  • the fitting portion 15 is formed, for example, extending in a direction (y direction) perpendicular to the extending direction (x direction) of the parallel sections 21A and 22A of the coil elements 21 and 22 .
  • a mating connector 9 provided on a cable (not shown) is fitted to the fitting portion 15 .
  • the temperature sensor 10 is electrically connected to a circuit board of a control device (not shown) provided in the vehicle.
  • the fitting portion 15 and the mating connector 9 can be connected at any position where interference with the coil elements 21 and 22 can be avoided.
  • the fitting portion 15 of the present embodiment is arranged in the y-direction. , are arbitrarily set according to the structure of the temperature measurement object (coils 21, 22) on which the assembly 1 of the present invention is provided.
  • An electrical signal output from the temperature sensor 10 is input to the control circuit via a cable. Based on this electric signal, the control device measures the temperature of the coil elements 21 and 22 by arithmetic processing.
  • the temperature sensor 10 and the mating connector 9 are made of a material having necessary properties such as heat resistance and rigidity that can adapt to the temperature rise of the stator coil during operation of the rotating electric machine.
  • the sensor body 11 includes a thermal element 12, a first lead frame 131 and a second lead frame 132 electrically connected to the thermal element 12, and the thermal element 12. , a first lead frame 131 and a housing 14 holding a second lead frame 132 .
  • the fitting portion 15 described above is formed integrally with the housing 14 .
  • the thermosensitive element 12 is a thermistor element comprising a thermosensitive element 121, a pair of clad wires 122, and an electrically insulating sealing material 123 that covers and seals a part of the clad wire 122 and the thermosensitive element 121.
  • a resistor having a temperature coefficient such as a thermistor whose resistance value changes with temperature change, a platinum temperature sensor, or the like can be used.
  • a dumet wire for example, is used as the clad wire.
  • a pair of clad wires 122 are connected at one end to the heat sensitive element 121 and extend in the same direction.
  • the pair of clad wires 122 are drawn out from the sealing member 123 to the rear side xb of the first housing 141, which will be described later, with a predetermined gap in the y direction.
  • One clad wire 122 is connected to the first lead frame 131 and the other clad wire 122 is connected to the second lead frame 132 .
  • Each of the lead frames 131 and 132 is a single plate-like member formed into a predetermined shape by punching using a plate material made of a metal material. Both of the lead frames 131 and 132 are formed in flat plate shapes along the xy plane.
  • the first lead frame 131 and the second lead frame 132 correspond to paths for transmitting electrical signals output from the heat sensitive element 12 and correspond to terminals inserted into and removed from mating terminals of the mating connector 9 .
  • the housing 14 also serves as a connector housing that holds the terminals.
  • the first lead frame 131 and the second lead frame 132 are simply referred to as lead frames 131 and 132 when there is no need to distinguish between them.
  • the lead frames 131 and 132 are both L-shaped in plan view. Since the first lead frame 131 and the second lead frame have substantially the same shape, only the first lead frame 131 will be described below, and the description of the second lead frame 132 will be omitted.
  • the first lead frame 131 includes a first connecting portion 131A as a first portion, a second connecting portion 131B as a second portion, and an intermediate portion 131C. 131 A of 1st connection parts, 131 C of intermediate parts, and the 2nd connection part 131B are continuously formed in this order.
  • the first connecting portion 131A corresponds to a straight portion extending in the x direction of the first lead frame 131, the end of the front side xf is connected to the clad wire 122, and the rear side xb is continuous with the intermediate portion 131C. are doing.
  • the intermediate portion 131C corresponds to a linear portion formed between the first connection portion 131A and a second connection portion 131B described later.
  • the intermediate portion 131C is bent from the x-direction, which is the extending direction of the first connection portion 131A, toward the direction orthogonal to the direction, that is, the y-direction.
  • the first lead frame 131 is formed in an L shape in plan view.
  • the second connection portion 131B is continuous with the intermediate portion 131C and is formed to extend linearly in the y direction.
  • the second connection portion 131B is arranged to protrude inside the fitting portion 15 . Then, when a part of the housing (mating housing) (not shown) of the mating connector 9 is inserted into the mating portion 15 and the mating connector 9 and the mating portion 15 are mated, the second connecting portion 131B and the mating portion 15 are mated.
  • the lead frame 131 and the mating terminal are electrically connected by contact with the mating terminal held in the mating housing.
  • the second lead frame 132 also includes a first connecting portion 132A as a first portion, a second connecting portion 132B as a second portion, and an intermediate portion 132C.
  • the first connection portions 131A and 132A of the lead frames 131 and 132 are arranged at the same position in the x direction, and the second connection portions 131B and 132B of the lead frames 131 and 132 are arranged at the same position in the y direction.
  • the lead frames 131 and 132 are arranged at the same position in the z direction, that is, on the same xy plane. Both of the lead frames 131 and 132 are bent, and the first lead frame 131 is arranged on the outer peripheral side of the bend of the second lead frame 132 .
  • a predetermined gap suitable for joining the pair of clad wires 122 is set between the first connection portions 131A and 132A.
  • a predetermined gap corresponding to the position of the pair of mating terminals is set between the second connection portions 131B and 132B.
  • the first connection portions 131A and 132A have a width (dimension in the y direction) that allows insertion into the housing 14, and the second connection portions 131B and 132B have a width (dimension in the x direction) that allows insertion into the mating terminal. dimensions) are given. Since the width of the intermediate portions 131C and 132C is set wider than the width of the first connection portions 131A and 132A and the second connection portions 131B and 132B, the rigidity of the lead frames 131 and 132 is sufficiently secured. .
  • the housing 14 will be described with reference to FIGS. 3(a) and 3(b).
  • the housing 14 is made of an insulating resin material and is formed in an L shape when viewed from above.
  • the housing 14 is composed of a first housing 141 as a first holding portion for holding the thermal element 12 and a second housing 142 as a second holding portion for holding the pair of lead frames 131 and 132 .
  • the first housing 141 is a rectangular parallelepiped hollow member extending in the x-direction (first direction) and is a molded body 141M forming an outer shell of the first housing 141, and the molded body 141M is filled inside. and a filler 16 .
  • the thermosensitive element 12 and the first connecting portions 131A and 132A are held inside the molded body 141M.
  • the molded body 141M of this embodiment is formed by injection molding using an insulating resin material.
  • the molded body 141M includes a front wall 141A located on the front side xf in the x direction, a pair of side walls 141B and 141C facing each other in the y direction, a top wall 141D as a first wall, and a z-axis with respect to the top wall 141D. and a bottom wall 141E as a second wall facing in the direction.
  • a rectangular opening 141F is formed on the rear side xb of the molded body 141M in the x direction.
  • resin materials for the molded body 141M include polyphenylene sulfide (PPS), polyamide (PA), polyimide (PI), polyetheretherketone (PEEK), polytetrafluoroethylene (PTFE), and polysulfone (PSF/PSU).
  • Thermoplastic resins such as polyetherimide (PEI), polycarbonate (PC), polypropylene (PP), polyvinylidene chloride (PVDC), polyacetal (POM), polyvinylidene fluoride (PVDF), perfluoroalkoxyalkane (PFA), etc.
  • thermosetting resins such as phenolic resins (PF), unsaturated polyesters (UP), epoxy resins (EP), silicone resins (SI), and polyurethanes (PU) can be used.
  • PF phenolic resins
  • UP unsaturated polyesters
  • EP epoxy resins
  • SI silicone resins
  • PU polyurethanes
  • a resin material similar to the above can be used for the second housing 142 as well.
  • the upper wall 141D contacts the first coil element 21 and the lower wall 141E contacts the second coil element 22.
  • a pair of guide walls 141G (first guides) facing each other in the y direction are formed on the upper wall 141D.
  • Each of the pair of guide walls 141G is formed to extend along the x direction.
  • the pair of guide walls 141G protrude upward from both ends of the upper wall 141D in the y direction, and position the first coil element 21 in the y direction by placing the first coil element 21 therebetween.
  • the lower wall 141E is formed with a pair of guide walls 141H (second guides) facing each other in the y direction.
  • Each of the pair of guide walls 141H is also formed to extend along the x direction.
  • the pair of guide walls 141H protrude downward from both ends of the lower wall 141E in the y direction, and position the second coil element 22 in the y direction by placing the second coil element 22 therebetween.
  • the thermal element 12 is accommodated through the opening 141F, and an insulating filler 16 is filled as shown in FIG. 4(b).
  • an insulating filler 16 is filled as shown in FIG. 4(b).
  • the filler 16 a resin material having a heat-resistant temperature required when the temperature of the stator coil rises and adhesiveness sufficient for fixing the heat-sensitive element 12 can be appropriately selected and used. From the viewpoint of improving the followability of the temperature detected by the temperature sensor 10 to temperature changes of the coil elements 21 and 22, it is preferable that the filler 16 has a high thermal conductivity.
  • PPS polyphenylene sulfide
  • PA polyamide
  • PI polyimide
  • PEEK polyetheretherketone
  • PEI polyetherimide
  • PC polycarbonate
  • PVDC polyvinylidene chloride
  • PVDF polyvinylidene fluoride
  • PF phenolic resin
  • UP unsaturated polyester
  • EP epoxy resin
  • Thermosetting resin such as
  • the filling material 16 is filled inside the molded body 141M by injection molding performed by arranging the molded body 141M, the thermal element 12 and the lead frames 131 and 132 in a mold.
  • the resin material of the filler 16 is injected by an injection molding machine, for example, in the direction of the arrow shown in FIG.
  • the second housing 142 is formed along the first lead frame 131 and the second lead frame 132 .
  • the second housing 142 holds a predetermined range of the first connecting portion 131A of the first lead frame 131 and the second lead frame 132, intermediate portions 131C and 132C, and predetermined ranges of the second connecting portions 131B and 132B.
  • the second housing 142 is solidly molded except for the fitting portion 15 by injection molding using an insulating resin material while the lead frames 131 and 132 are placed in a mold.
  • the second connection portions 131B and 132B are sufficiently held against the insertion/removal force of the mating terminal by the resin material used for the solid portion 142A.
  • the solid portion 142A is bent following the shape of the lead frames 131 and 132, and is composed of a portion disposed between the coil elements 21 and 22 and a portion protruding sideways from between the coil elements 21 and 22. It is formed in an L shape in plan view.
  • the portion located between the coil elements 21 and 22 has a length in the x direction necessary for the fitting portion 15 to be stably supported by the coil elements 21 and 22 .
  • a portion of the solid portion 142A extending in the x direction, the first housing 141, and a predetermined range of the parallel sections 21A and 22A of the coil elements 21 and 22 are covered with the resin molding 3 (FIG. 1).
  • the fitting portion 15 is formed integrally with the solid portion 142A.
  • the fitting portion 15 is formed in a substantially rectangular tubular shape, and its width and height (dimensions in the x-direction and z-direction) are enlarged compared to the solid portion 142A. Although the height of the fitting portion 15 is increased, the fitting portion 15 is arranged in the y direction, which is different from the x direction in which the coil elements 21 and 22 extend, so that the fitting portion 15 is located at the height of the coil elements 21 and 22. is designed not to interfere with
  • the fitting portion 15 includes an upper wall 151 , a pair of side walls 152 and 153 facing each other in the x direction, and a lower wall 154 .
  • the upper wall 151 is formed with a locking portion 151A to which a locking projection (not shown) formed on the mating housing is locked.
  • An opening 151B is formed on the rear side yb of the engaging portion 151A as viewed from the opening of the fitting portion 15, in which the engaging projection of the mating housing is arranged.
  • the lower wall 154 is formed with a ridge 154A for guiding the housing of the mating connector 9. As shown in FIG. The ridge 154A protrudes from the lower wall 154 to the inside of the fitting portion 15 and extends in the y direction.
  • the covering material 17 covers the entire thermal element 12 and joints 124 between the thermal element 12 and the lead frames 131 and 132 . It is preferable that the covering of the thermal element 12 and the like with the covering material 17 is performed before the filling material 16 is filled into the molded body 141M. This is because the heat-sensitive element 12, which has a flexible structure in a single state, can have sufficient rigidity to hold its position and shape when the filler 16 is injection-molded, if it is previously covered with the covering material 17.
  • the covering material 17 can be made of a resin material having a heat resistance temperature required when the temperature of the stator coil rises and adhesiveness sufficient to fix the heat sensitive element 12.
  • FIG. Before the injection molding of the filler 16, for example, a melted resin material used as the covering material 17 may be immersed in the thermal element 12 to solidify the resin material.
  • the resin material used for the coating material 17 and the resin material used for the filler 16 may be the same or different.
  • Lead frame preparation step S01 Lead frames 131 and 132 are formed by punching from a plate made of a metal material (FIG. 6(a)).
  • Wire joining step S02 A pair of clad wires 122 of the thermal element 12 are joined to the first connecting portions 131A, 132A of the lead frames 131, 132 (FIG. 6(b)).
  • Coating step S03 The resin material of the coating material 17 is immersed in a range including the front end 12A of the thermal element 12 and the joint 124, and solidified (FIG. 6(c)).
  • Molded body accommodation step S04 The thermal element 12 covered with the covering material 17 is housed inside the molding 141M of the first housing 141 (FIG. 6(c)). At this time, since the shape and posture of the thermal element 12 are stabilized by the provision of the covering material 17, the thermal element 12 can be accommodated without interfering with the molding 141M.
  • First holding step S05 By placing the molded body 141M in a mold and filling the inside of the molded body 141M with the filler 16 by injection molding, the thermal element 12 is held in the first housing 141 (FIG. 6(d)). Since the covering material 17 is provided on the thermal element 12 prior to the filling of the filler 16, the pressure of the resin material injected into the molded body 141M causes the thermal element 12 to shift from a predetermined position or cause the pair of clad wires 122 to move. can be prevented from being deformed and short-circuited.
  • Second holding step S06 The first housing 141 with the lead frames 131 and 132 protruding from the opening 141F is placed in a mold, and the second housing 142 and the fitting portion 15 are integrally molded by injection molding (FIG. 6(e)). Then, the lead frames 131 and 132 are held in the second housing 142, and the first housing 141 and the second housing 142 are integrated.
  • the temperature sensor 10 of this embodiment can be manufactured through the above steps S01 to S06.
  • the temperature sensor 10 of this embodiment can also be manufactured, for example, by the procedure shown in FIGS. 7(a) to 7(e).
  • Lead frame preparation step S11 Lead frames 131 and 132 are formed by punching from a plate made of a metal material (FIG. 7(a)).
  • Second holding step S12 The lead frames 131 and 132 are arranged in a mold, and the second housing 142 and the fitting portion 15 are integrally molded by injection molding (FIG. 7(b)). Then, the lead frames 131 and 132 are held by the second housing 142 .
  • Wire joining step S13 A pair of clad wires 122 of the thermal element 12 are joined to the first connecting portions 131A, 132A of the lead frames 131, 132 protruding from the second housing 142 (FIG. 7(c)).
  • Coating step S14 The resin material of the covering material 17 is immersed in a range including the front end 12A of the heat sensitive element 12 and the joint 124, and solidified (FIG. 7(d)).
  • Molded body accommodation step S15 The thermal element 12 covered with the covering material 17 is housed inside the molding 141M of the first housing 141 (FIG. 7(d)). As described above, the covering material 17 stabilizes the shape and posture of the thermal element 12, so that the thermal element 12 can be housed in the first housing 141 without interfering with it.
  • the molded body 141M used in the second manufacturing method has an opening formed in the front wall 141A for injecting the filler 16 inside.
  • First holding step S16 The molded body 141M is placed in a mold, and the filling material 16 is filled inside the molded body 141M through the opening of the front wall 141A by injection molding (FIG. 7(e)). Since the thermal element 12 is provided with the covering material 17, the pressure of the resin material injected into the molded body 141M may cause the thermal element 12 to shift from a predetermined position or the pair of clad wires 122 to be deformed and short-circuited. can prevent you from doing it. By filling the molded body 141M with the filler 16, the heat sensitive element 12 is held in the first housing 141 and the first housing 141 and the second housing 142 are integrated.
  • the manufactured temperature sensor 10 is assembled to the coil elements 21 and 22 of the stator coil of the rotating electric machine.
  • the first housing 141 is inserted between the parallel sections 21A and 22A of the coil elements 21 and 22, and the first coil element 21 is inserted between the pair of guide walls 141G.
  • the temperature sensor 10 can be easily positioned with respect to the respective centers of the coil elements 21 and 22 without separately positioning the temperature sensor 10. can do.
  • the temperature sensor 10 receives heat evenly from the coil elements 21 and 22, so that the average temperature of the coil elements 21 and 22 can be stably detected.
  • the temperature sensor 10 and the parallel sections 21A and 22A are arranged in a mold and the resin molding 3 is molded by injection molding, the temperature sensor 10 is fixed to the coil elements 21 and 22 by the resin molding 3. Then, as shown in FIG. 1, the assembly 1 is manufactured by assembling the temperature sensor 10 and the coil elements 21 and 22 . At this time, the guide walls 141G and 141H can prevent the position of the temperature sensor 10 from shifting with respect to the coil elements 21 and 22 due to the pressure of the resin in the mold.
  • the temperature sensor 10 has lead frames 131 and 132 which are connected to the thermal element 12 and which are inserted into and removed from mating terminals as terminals. do not have.
  • a lead wire is pulled out over a predetermined length from the temperature sensor 10 in consideration of the temperature rise of the stator coil.
  • the temperature sensor 10 is connected via the connector 9 and the cable provided to the connector 9. electrically connected to the circuit board.
  • the temperature sensor 10 of the present embodiment realizes a "wireless" structure that is directly connected to the mating connector 9 that is heat resistant and adaptable to the ambient temperature during use.
  • the electric wire does not extend from the temperature sensor 10 in a trackless manner, there is no need for preparatory work such as temporarily bundling the electric wire when incorporating the rotating electric machine into the vehicle.
  • the assembling work of the rotating electric machine can be carried out in a predetermined position in the vehicle from a predetermined direction while appropriately changing the attitude of the rotating electric machine according to a predetermined procedure without being hindered by electric wires.
  • the wiring of the temperature sensor 10 is completed by fitting the fitting portion 15 and the mating connector 9 together without performing work such as untying the bundle of electric wires.
  • the temperature sensor 10 including the lead frames 131 and 132 that also serve as connector terminals and the fitting portion 15 that fits into the mating connector 9 is directly connected to the mating connector 9 without an electric wire.
  • the structure including the temperature sensor 10 and the mating connector 9 can be miniaturized.
  • the fitting portion 15 and the coil elements 21 and 22 are aligned. Since the temperature sensor 10 can be arranged at any position on the coil elements 21 and 22 extending in one direction without interference, there are few restrictions on the position where the temperature sensor 10 can be attached. Furthermore, the operation of fitting the fitting portion 15 and the mating connector 9 can be easily performed.
  • the first housing 141 that holds the thermal element 12 is used as the second connection terminal. It is molded separately from the second housing 142 that holds the portions 131B and 132B.
  • the resin material can be injected in a predetermined direction limited to the thermal element 12 and its vicinity. Displacement or deformation of the thermal element 12 due to pressure can be suppressed.
  • the thermal element 12 is housed in the molded body 141M that has been molded in advance, and the filler 16 is injected into the molded body 141M, the area into which the resin material is injected is more limited.
  • the entire thermal element 12 can be fixed at a predetermined position by the resin material. As a result, variations in the temperature detection characteristics of the thermal element 12 can be suppressed, and the temperature sensor 10 with stable characteristics can be provided.
  • FIG. 8 The temperature sensor 30 is provided with two heat-sensitive elements 12 (12-1, 12-2), so that the temperature of each of the coil elements 21, 22 can be detected individually.
  • differences from the temperature sensor 10 of the above embodiment will be mainly described.
  • the temperature sensor 30 includes two heat sensitive elements 12-1 and 12-2, a pair of lead frames 131 and 132 and a pair of lead frames 181 and 182, a single first housing 341 and a single second housing 342. and a housing 34 comprising:
  • Each of the lead frames 131, 132, 181, 182 is formed in an L shape in plan view.
  • a second housing 342 formed along these lead frames is formed with a fitting portion 35 for fitting with a mating connector (not shown).
  • the fitting portion 35 is formed integrally with the second housing 342 toward the y direction different from the x direction in which the coil elements 21 and 22 extend.
  • the temperature sensor 30 is assembled with the coil elements 21 and 22 in the same manner as the temperature sensor 10 of the above embodiment, and forms an assembly together with the coil elements 21 and 22 .
  • the thermal elements 12-1 and 12-2 are configured in the same manner as the thermal element 12 of the above-described embodiment, and are stacked with a predetermined gap in the z direction. Both of the heat sensitive elements 12-1 and 12-2 are arranged so that the clad wire 122 extends in the same direction as the coil elements 21 and 22 extend.
  • the pair of lead frames 131 and 132 are constructed substantially in the same manner as the first lead frame 131 and the second lead frame 132 of the above embodiment.
  • the lead frames 131 and 132 are electrically connected to the pair of clad wires 122 of the thermal element 12-1, extend to the position of the fitting portion 35, and are electrically connected to the mating terminal.
  • the pair of lead frames 181 and 182 are electrically connected to the pair of cladding wires 122 of the thermal element 12-2 at the first connecting portions 181A and 182A, and are positioned behind the pair of lead frames 131 and 132 in the x direction. On the side xb, it is bent in the y direction and bent in the z direction to the same height as the pair of lead frames 131 and 132 to extend in the y direction. More specifically, the lead frame 181 overlaps the lead frame 131 in plan view up to the position P1 where the lead frame 131 bends, and after bending in the y direction, the lead frame 181 is the same as the thermal element 12-2 up to the position of the step 181S. placed at height.
  • a first section 181D closer to the thermal element 12-2 than the step 181S of the lead frame 181 is arranged at the same height as the thermal element 12-2, and a second section 181E closer to the fitting portion 35 than the step 181S is It is arranged at the same height as the pair of lead frames 131 and 132 .
  • the lead frame 182 also overlaps the lead frame 132 in plan view up to the position P2 where the lead frame 132 bends, and after bending in the y direction, the lead frame 182 is at the same height as the thermal element 12-2 up to the position of the step 182S. are placed in
  • the lead frame 182 also has a first section 182D and a second section 182E separated by a step 182S.
  • the steps 181S and 182S are set at the same position in the y direction.
  • the second connection portions 132B, 131B, 182B, 181B of the four lead frames 132, 131, 182, 181 are arranged in the x direction.
  • a mating connector having four terminals individually corresponding to the lead frames 132 , 131 , 182 , 181 is fitted to the fitting portion 35 .
  • the temperature sensor 30, for example, as shown in FIGS. 10 and 11, can be manufactured by a procedure corresponding to the first manufacturing method (FIG. 6) of the above embodiment.
  • Wire joining step S21: Fig. 10(a) A pair of clad wires 122 of the thermal element 12-1 are joined to the preformed lead frames 131 and 132. As shown in FIG. Similarly, the pair of clad wires 122 of the thermal element 12-2 are joined to lead frames 181 and 182 which are formed in advance.
  • Covering step S22 FIG. 10(b)
  • the resin material of the coating material 17 is immersed in the range from the front end 12A to the joint 124 and solidified.
  • Molded body accommodation step S23 Fig. 10(c)
  • the thermal elements 12-1 and 12-2 covered with the covering material 17 are housed inside the molding 341M forming the outer shell of the first housing 341.
  • the shape and posture of the thermal elements 12-1 and 12-2 are stabilized by the provision of the covering material 17, so the thermal elements 12-1 and 12-2 are caused to interfere with the molded body 341M. can be accommodated without
  • First holding step S24 FIG. 11(a)
  • the heat sensitive elements 12-1 and 12-2 are held in the first housing 341 by placing the molded body 341M in a mold and filling the inside of the molded body 341M with the filler 16 by injection molding. Since the covering material 17 is provided on each of the thermal elements 12-1 and 12-2 prior to the filling of the filler 16, the thermal elements 12-1 and 12 are compressed by the pressure of the resin material injected into the molded body 341M. It is possible to prevent the -2 from deviating from a predetermined position and the pair of clad wires 122 from being deformed and short-circuited.
  • Second holding step S25 FIG. 11(b)
  • the lead frames 131, 132, 181, 182 and the first housing 341 with the lead frames protruding from the opening 341F are placed in a mold, and the second housing 342 and the fitting portion 35 are integrally molded by injection molding. (Fig. 6(e)).
  • the lead frames 131, 132, 181, 182 are held in the second housing 342, and the first housing 341 and the second housing 342 are integrated.
  • the temperature sensor 30 can be manufactured.
  • the temperature sensor 30 can also be manufactured by a method similar to the second manufacturing method (FIG. 7) of the above embodiment.
  • the shapes of the lead frames 131, 132, 181, 182 and the housings 14, 34 in the above embodiments are merely examples.
  • the lead frames 131, 132, 181, 182 and the housings 14, 34 can be shaped appropriately according to the orientation of the fitting portions 15, 35 and the like. For example, by bending the lead frames 131 and 132 and the second housing 142 from the x direction as the first direction in which the clad wire 122 extends to the z direction as the second direction, the fitting portion 15 is bent in the z direction. can be placed towards The first direction and the second direction do not necessarily have to be perpendicular to each other, and it is sufficient if they are different directions.
  • the molded body 141M of the first housing 141 or the molded body 341M of the first housing 341 is not limited to being molded from a resin material, and may be molded from a metal material.
  • the insulation between the pair of clad wires 122 and the insulation between the lead frames 131, 132, 181, 182 can be ensured by at least one of the covering material 17 and the filling material 16, for example.
  • the position of the thermal element 12 may be fixed by a method other than filling the periphery of the thermal element 12 with a resin material. For example, by sandwiching coil elements 21 and 22 and temperature sensor 10 between upper and lower housings and engaging the upper and lower housings, the position of coil elements 21 and 22 and temperature sensor 10 can be determined. can be fixed.
  • the temperature sensors 10, 30 of the present invention do not necessarily have to be arranged between the coil elements 21, 22.
  • the temperature sensors 10, 30 of the present invention may be arranged on any one surface of a single coil element to detect the temperature of the single coil element.
  • Two thermosensitive elements 12 may be used to individually detect the temperature of the two coil elements 21 and 22, or two thermosensitive elements 12 may be used to detect the temperature of a single coil element. .
  • One of the two heat sensitive elements 12 may be provided in the first temperature sensor 10 and the other may be provided in the second temperature sensor 10, or the two heat sensitive elements 12 may be provided as shown in FIGS. may be provided in a single temperature sensor 30.
  • the object of temperature detection by the temperature sensor 10 of the present invention may be, for example, a coil used in a booster circuit that increases voltage, in addition to the stator coil of a rotating electric machine.
  • the temperature sensor 10 of the present invention can be widely used to detect the temperature of a coil provided in a vehicle-mounted device such as a rotary electric machine, a booster, a transformer, or the like.
  • the temperature sensor 10 can also be manufactured as an assembly that is fixed to the coil parts. For example, if the coil elements 21 and 22 shown in FIG. It is possible to manufacture an assembly 1 with a temperature sensor 10 fixed to it.
  • the temperature sensor 10 of the present invention does not necessarily have to be fixed to the coil, and may be fixed to an appropriate member provided in the vehicle, such as a member that supports the coil.
  • the fixing means may be an appropriate method such as fastening.
  • the assembly 1 of the above-described embodiment can be provided with male and female threads as a fixing portion instead of the resin molded body 3 .

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Measuring Temperature Or Quantity Of Heat (AREA)
PCT/JP2022/009093 2022-03-03 2022-03-03 温度センサ、組付体、回転電機、および温度センサの製造方法 WO2023166650A1 (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
PCT/JP2022/009093 WO2023166650A1 (ja) 2022-03-03 2022-03-03 温度センサ、組付体、回転電機、および温度センサの製造方法
CN202280006444.9A CN116249881A (zh) 2022-03-03 2022-03-03 温度传感器、组装体、旋转电机及温度传感器的制造方法
JP2022548407A JP7212209B1 (ja) 2022-03-03 2022-03-03 温度センサ、組付体、回転電機、および温度センサの製造方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2022/009093 WO2023166650A1 (ja) 2022-03-03 2022-03-03 温度センサ、組付体、回転電機、および温度センサの製造方法

Publications (1)

Publication Number Publication Date
WO2023166650A1 true WO2023166650A1 (ja) 2023-09-07

Family

ID=84982675

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2022/009093 WO2023166650A1 (ja) 2022-03-03 2022-03-03 温度センサ、組付体、回転電機、および温度センサの製造方法

Country Status (3)

Country Link
JP (1) JP7212209B1 (enrdf_load_stackoverflow)
CN (1) CN116249881A (enrdf_load_stackoverflow)
WO (1) WO2023166650A1 (enrdf_load_stackoverflow)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7638317B2 (ja) * 2023-03-30 2025-03-03 本田技研工業株式会社 サーミスタ取付構造およびサーミスタユニット

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011033531A (ja) * 2009-08-04 2011-02-17 Mitsubishi Electric Corp 温度センサ一体型圧力センサ装置
WO2018167903A1 (ja) * 2017-03-16 2018-09-20 株式会社芝浦電子 温度センサ
JP2019012083A (ja) * 2018-10-10 2019-01-24 株式会社芝浦電子 温度検出装置
WO2020026394A1 (ja) * 2018-08-02 2020-02-06 株式会社芝浦電子 温度検知装置および組付体
WO2021070898A1 (ja) * 2019-10-10 2021-04-15 株式会社芝浦電子 温度センサおよび電動機

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55155936U (enrdf_load_stackoverflow) * 1979-04-25 1980-11-10
JP3493802B2 (ja) * 1995-04-25 2004-02-03 株式会社デンソー 温度センサ

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011033531A (ja) * 2009-08-04 2011-02-17 Mitsubishi Electric Corp 温度センサ一体型圧力センサ装置
WO2018167903A1 (ja) * 2017-03-16 2018-09-20 株式会社芝浦電子 温度センサ
WO2020026394A1 (ja) * 2018-08-02 2020-02-06 株式会社芝浦電子 温度検知装置および組付体
JP2019012083A (ja) * 2018-10-10 2019-01-24 株式会社芝浦電子 温度検出装置
WO2021070898A1 (ja) * 2019-10-10 2021-04-15 株式会社芝浦電子 温度センサおよび電動機

Also Published As

Publication number Publication date
CN116249881A (zh) 2023-06-09
JPWO2023166650A1 (enrdf_load_stackoverflow) 2023-09-07
JP7212209B1 (ja) 2023-01-24

Similar Documents

Publication Publication Date Title
JP7400051B2 (ja) 電気コネクタ及びその製造方法
KR20210151961A (ko) 커넥터
US20140148019A1 (en) Component module, mating connector, and connection structure between component module and mating connector
JP2009139272A (ja) 電流センサ
US9653843B2 (en) Connector
CN113950616B (zh) 温度传感器和电动机
JP5225878B2 (ja) 電流検出装置の組付け構造
MX2013006565A (es) Cable electrico montado en la parte externa, arnes de cableado incluyendo el mismo cable electrico montado en la parte externa y el metodo para fabricar el mismo arnes de cableado.
JP7212209B1 (ja) 温度センサ、組付体、回転電機、および温度センサの製造方法
WO2021192340A1 (ja) バスバーユニット
CN109149187B (zh) 连接器
US12224534B2 (en) Wiring component with temperature sensor
CN111952761B (zh) 连接器装置
US10699859B2 (en) Multiple contact linear slide switch
US10608352B2 (en) Connector and connector assembly
CN116067546A (zh) 电气装置
KR101514410B1 (ko) 차량용 스피드 센서 조립체 및 그 조립 방법
JPWO2023166650A5 (enrdf_load_stackoverflow)
JP2019129039A (ja) コネクタ及び電子機器
KR101626371B1 (ko) 카메라용 케이블 조립체 및 카메라용 케이블 조립체의 제작방법
JP7038005B2 (ja) コネクタ及びコネクタアセンブリ
JP6814078B2 (ja) センサ装置及びその製造方法
JP7512992B2 (ja) コネクタ
JP5800598B2 (ja) フラット回路体組付け構造
JP2009295945A (ja) ワイヤーハーネスと一体化された電子ユニット及びその製造方法

Legal Events

Date Code Title Description
WWE Wipo information: entry into national phase

Ref document number: 2022548407

Country of ref document: JP

121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 22929795

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 22929795

Country of ref document: EP

Kind code of ref document: A1