JP5345913B2 - Power supply cover structure - Google Patents

Power supply cover structure Download PDF

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Publication number
JP5345913B2
JP5345913B2 JP2009211215A JP2009211215A JP5345913B2 JP 5345913 B2 JP5345913 B2 JP 5345913B2 JP 2009211215 A JP2009211215 A JP 2009211215A JP 2009211215 A JP2009211215 A JP 2009211215A JP 5345913 B2 JP5345913 B2 JP 5345913B2
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cover
case
electric wire
sensor component
battery
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JP2011060675A (en
Inventor
茂之 小笠原
勝則 佐藤
清貴 山下
豪範 土屋
隆雄 庄子
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矢崎総業株式会社
トヨタ自動車株式会社
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage
    • Y02E60/12Battery technologies with an indirect contribution to GHG emissions mitigation

Abstract

<P>PROBLEM TO BE SOLVED: To prevent an electric wire of a sensor component such as a thermistor from interfering with a sheet metal or the like on an outer side of a battery at low cost, with superior workability, and with reliability. <P>SOLUTION: A sensor component 6 is mounted on an insulative case 7 of a bus bar module 4 to be assembled into a battery 2 in a contact state with the battery and an electric wire 10 of the sensor component is routed along the case, and an insulative cover 8 covering the bus bar 5, the sensor component, and the electric wire simultaneously is mounted on the case. The electric wire 10 is inserted between a pair of ribs 31 provided on the case 7 and the wire is covered by the cover 8 over the ribs. The cover 8 has a pair of sidewalls 8c perpendicular to both sides of a plate 8b. The sensor component 6 is supported by an elastic arm 6c in the case 7. The cover 8 is arranged in a free opening and closing for every sensor component in the case 7. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to a cover structure for a power supply device that covers components such as a thermistor with a cover of a bus bar module that is mounted on a power supply device for an electric vehicle including a hybrid car.

  FIG. 5 shows one form of a cover structure of a conventional power supply device (see Patent Document 1).

  In this structure, an insulating resin case 73 is attached to the electrode 72 side of a battery 71 of an electric vehicle including a hybrid car, the electrode 72 is exposed from the case 73, and an insulating resin cover 74 is attached to the case 73. The cover 74 covers and protects the electrode 72.

  The cover 74 includes a horizontally long first portion 75 that faces the electrode 72, a horizontally long second portion 77 that is connected to the first portion 75 by a thin horizontal hinge 76, and a thin wall on both left and right sides of the second portion 77. A rectangular third portion 79 is connected by a vertical hinge 78 so as to be freely opened and closed. The first portion 75 and the second portion 77 are locked to the case by locking means such as a frame piece 80 and a protrusion. The third portion 79 covers the total input and total output electrodes 72 on the left and right sides of the battery 71.

  A similar (similar) case (73) and cover (74) are attached not only to the front end of the battery 71 but also to the rear end. The battery 71 includes a plurality of parallel batteries 81, and each battery 81 is connected in series by screwing each electrode 72 to a conductive metal plate-like bus bar (not shown) in the case 73. The battery 71 is fastened and held by strip-shaped guide bars 82 at the upper and lower and front and rear ends (the guide bar 82 is simply shown in FIG. 5).

  As shown in FIG. 6 (B view in FIG. 5), the battery 81 has a temperature detection thermistor 83 mounted on the end face of the required battery 81. The lead wire 84 of each thermistor 83 is fixed to the guide bar 82 with a band 85 made of insulating resin, and interference between the sheet metal such as a box-shaped battery pack (not shown) outside the battery and the wire 84 is prevented. The electric wire 84 is connected to an unillustrated ECU (electronic control unit), and when an abnormal temperature of the battery 81 is detected, the charging current is suppressed by a signal from the thermistor 83. The battery 71, case 73, cover 74, thermistor 83, etc. in FIG.

  As a prior art other than the cover structure of the power supply device described above, Patent Document 2 (not shown) includes a structure in which a bus bar module is mounted on the top of a battery pack, and a thermistor that detects the temperature of the battery with an elastic arm. A structure to be engaged with the resin plate on the battery side is described.

  Further, in Patent Document 3 (not shown), a thermistor thermometer having a curved spring piece is attached to the inside of a lid made of insulating resin, and a lead wire of the thermistor thermometer is connected to the inner surface side of the lid. Hold between the pair of claws, then attach and lock the lid to the end of the battery, and at the same time, contact the thermistor thermometer with the battery of the battery or weld the electrode of each battery of the battery with a metal plate And connecting them.

JP 2001-332235 A (FIG. 1) Japanese Patent Laying-Open No. 2008-298662 (FIGS. 5 and 8) Japanese Patent Laying-Open No. 2006-186045 (FIGS. 1 and 2)

  In the conventional structure shown in FIGS. 5 and 6, the wires 84 of each thermistor 83 are fixed by the plurality of bands 85, so that there are problems such as parts cost and assembly cost of the bands 85, and vibration of the vehicle. There is a concern that the electric wires 84 may loosen between the bands 85 in FIG. 6 and interfere with the sheet metal or the like.

  In particular, when a thermistor having a vibration absorbing arm or a spring piece described in Patent Documents 2 and 3 is applied, the thermistor vibrates (moves) integrally with the battery 71, and the thermistor electric wire 84 has a tensile force. There is a concern that the wire 85 may be stretched by receiving a compressive force, and the fixing of the electric wire 84 by the band 85 may be loosened or the band 85 may be rubbed.

  Further, in the structure of Patent Document 3, it takes time and effort to push and hold the thermistor's electric wire between the pair of claws of the lid, or when checking the thermistor and its electric wire for maintenance, etc. The large cover had to be removed from the battery together with the thermistor and its wires, which was troublesome.

  These problems may occur in the same manner even when a component such as a sensor (not shown) for detecting current leakage or liquid leakage on the surface of the battery 81 is used instead of the thermistor (temperature sensor) 83. It is.

  In view of the above points, the present invention can reliably prevent the electric wires of sensor components such as thermistors from interfering with the sheet metal or the like outside the battery at a low cost with good workability. It is an object of the present invention to provide a cover structure for a power supply device that can easily perform a check operation of the electric wire.

  In order to achieve the above object, a cover structure for a power supply device according to claim 1 of the present invention is mounted on an insulating case of a bus bar module assembled to a battery in a state where the sensor component is in contact with the battery. An electric wire of a component is routed along the case, and an insulating cover that covers the bus bar, the sensor component, and the electric wire at the same time is attached to the case.

  With the above configuration, the sensor part is attached to the case of the bus bar module, and the cover is attached in a state where the electric wires are routed along the case, so that one cover is connected between each battery of the battery, and Cover the sensor parts and their wires at the same time to protect them safely from external interference. The cover may be a separate body from the case, or may be connected to the case by a thin hinge. The cover is locked to the case by locking means.

  The cover structure of the power supply device according to claim 2 is the cover structure of the power supply device according to claim 1, wherein the electric wire is inserted between a pair of ribs provided in the case, and the cover is disposed above the ribs. The electric wire is covered.

  With the above configuration, the electric wire of the sensor component is inserted and guided between the pair of ribs of the case, and the electric wire is surrounded on all sides by the case, the pair of ribs, and the cover, so that the electric wire is reliably prevented from protruding. The The pair of ribs and the cover are preferably in contact with no gap.

  According to a third aspect of the present invention, there is provided a cover structure for a power supply apparatus according to the first aspect, wherein the cover has a pair of side walls orthogonal to both sides of the plate portion.

  With the above configuration, the electric wire is accommodated between the pair of side walls of the cover, and the electric wire is prevented from jumping out from the side wall to the outside. The case and the plate of the cover and both side walls surround the electric wire on all sides.

  A power supply device cover structure according to a fourth aspect is the power supply device cover structure according to the third aspect, wherein the pair of side walls are positioned outside the pair of ribs according to the second aspect.

  With the above configuration, when the cover is closed to the case, the both side walls of the cover are positioned in parallel along the pair of ribs of the case, and the cover is accurately positioned with respect to the case. Covered without misalignment. Also, in the unlikely event that the electric wire jumps out from the rib, the electric wire is accommodated inside the cover side wall, and the electric wire jumps out from the side wall to the outside.

  A power supply device cover structure according to a fifth aspect is the power supply device cover structure according to any one of the first to fourth aspects, wherein the sensor component is supported by the case with an elastic arm.

  With the above configuration, the movable sensor component vibrates and moves up and down integrally with the battery within the range of the elastic arm stroke due to the vibration of the vehicle, etc. Advances and retracts (stretches) in the longitudinal direction. At this time, the cover of claim 1 is positioned along the longitudinal direction of the electric wire, so that the electric wire is reliably covered and protected by the cover regardless of the movement of the electric wire. Further, the wire is reliably covered and protected by the rib and the cover while moving forward and backward along the pair of ribs of the second and fourth aspects. Further, the wire is reliably covered and protected by the plate portion and both side walls of the cover while moving forward and backward along the pair of side walls of the cover.

  The power supply device cover structure according to claim 6 is the power supply device cover structure according to any one of claims 1 to 5, wherein the cover is disposed in the case so as to be freely opened and closed for each sensor component. And

  With the above configuration, the operator can perform maintenance of the required sensor parts and the required bus bars by opening and closing only the covers corresponding to the required sensor parts and the required bus bars.

  According to the first aspect of the invention, the cover is attached to the case of the bus bar module so as to cover the case side bus bar, the sensor component, and the electric wire at the same time. Further, it is possible to simultaneously prevent the interference between the electric wire of the sensor component and the sheet metal of the battery pack outside the battery. Since it is not necessary to fix the wire to the battery side with a band as in the conventional case, it is possible to protect the wire at low cost and to cover the three components (bus bar, sensor component and wire) as described above. Thus, the work can be efficiently protected with good workability, and the thin electric wires of the sensor parts can be reliably protected by covering them with a wide cover.

  According to the second aspect of the present invention, the pair of ribs and the cover of the case surround the electric wire, and it is possible to reliably prevent the electric wire from jumping out and the accompanying interference with the outside.

  According to the invention described in claim 3, the electric wire is accommodated between the substrate portion of the cover and both side walls (surrounding the electric wire by the case, the plate portion of the cover and the both side walls), Interference with the outside accompanying it can be prevented reliably.

  According to the fourth aspect of the invention, by positioning the cover with the pair of ribs of the case and both side walls of the cover, the electric wires of the sensor component can be reliably covered and protected by the cover without being displaced. Moreover, even if an electric wire jumps out from the rib to the outside, it can be protected by covering the electric wire with the side wall of the cover.

  According to the invention of claim 5, since the sensor component can be covered with the cover with certainty even if the electric wire advances and retreats in the longitudinal direction as the sensor component floats and sinks with respect to the case due to the bending of the elastic arm, Interference between the electric wire and the outside can be reliably prevented.

  According to the sixth aspect of the present invention, maintenance of the sensor component, its electric wire or bus bar can be easily performed with good workability by opening and closing only the cover corresponding to the required sensor component, its electric wire or bus bar.

It is a whole perspective view showing one embodiment of the cover structure of the power unit concerning the present invention. It is the top view of the state which removed the cover from the case which similarly shows the principal part of the cover structure of a power supply device. It is AA sectional drawing of FIG. 2 which shows one form of the attachment structure of a thermistor. It is a top view which shows the state which closed the cover to the case of FIG. It is a disassembled perspective view which shows one form of the cover structure of the conventional power supply device. FIG. 6 is a rear view of the B thermistor in FIG. 5 showing an example of a conventional thermistor mounting structure.

  1 to 4 show an embodiment of a cover structure of a power supply device according to the present invention.

  As shown in FIG. 1, the power supply device 1 is composed of a plurality of parallel plate-like batteries 3 constituting a battery 2 and a bus bar module 4 mounted on the upper part of the battery 2. As shown in FIGS. The bus bar module 4 includes a lower case 7 made of an insulating resin on which a conductive metal bus bar 5 and a temperature detection thermistor (sensor component) 6 are mounted, and an insulating resin in FIG. And a cover 8 made of metal.

  In FIG. 1, each battery 3 has a positive electrode and a negative electrode (not shown) at the upper end. For example, as in the conventional example of FIG. 5, each electrode has a positive electrode on the front side of one battery 3 and a negative electrode on the rear side, a negative electrode on the front side of the adjacent battery 3, and a positive electrode on the rear side. Then, the positive electrode on the front side of one battery 3 and the negative electrode on the front side of the adjacent battery 3 are connected in series by the rectangular plate-shaped bus bar 5 of FIG.

  Each front-side substantially L-shaped or substantially U-shaped cover 8 is arranged to face the front electrode and bus bar 5 in FIG. 1, and to face the rear electrode and bus bar (not shown). Rear rectangular covers 9 are arranged. Since the present invention is mainly related to the front cover 8, the description of the rear cover 9 and the like will be omitted. In the specification, the front / rear and left / right directions are for convenience of explanation.

  Each cover 8 can be opened and closed independently, and one thermistor 6 and its lead-out wire 10 (FIGS. 2 and 3) are arranged in the case 7 for each cover 8. In this example, the thermistor 6 is arranged at a ratio of approximately four batteries 3, and each cover 8 has four electrodes and two corresponding bus bars 5 (FIG. 2) together with each thermistor 6 (FIG. 2) and its electric wire 10. ) At the same time to protect.

  In FIG. 1, each cover 8 is locked to the engaging portion 12 (FIG. 4) of the case 7 with one locking portion 11 (FIG. 4) on each of the left and right sides. In FIG. 1, reference numeral 13 denotes a punching hole for the locking portion 11. Each cover 8 may be separated one by one, but preferably it is integrally connected to a belt-like vertical wall (not shown) at the front end via a thin hinge (not shown), for example. It is preferable to improve the assembling property of the cover 8 to the case 7. In any case, since each cover 8 can be opened and closed independently, maintenance of the required thermistor 6 (of the part to be confirmed) and its electric wire 10 can be easily performed with good workability.

  On the front side of the cover 8, a portion 14 for accommodating an electric wire following the voltage detection terminal 13 connected to the bus bar 5 (FIG. 2) is provided in a horizontally elongated shape, and each electric wire for voltage detection (not shown). Are led out from the left and right ends of the case 7 together with the temperature detecting wires 10.

  As shown in FIG. 2, the case 7 includes a plurality of rectangular frame-shaped bus bar accommodating portions 19, a voltage detecting wire accommodating portion 14 connected to the front side of the bus bar accommodating portion 16 by a thin flexible wall portion 17, and a bus bar. A thermistor accommodating portion 18 that is integrally provided on the rear side of the accommodating portion 16 and a horizontally elongated belt-like thermistor electric wire accommodating portion 19 that is integrally provided on the rear side of the thermistor accommodating portion 18 are provided.

  Each bus bar accommodating portion 16 is composed of a front and rear, left and right frame-shaped vertical peripheral wall (in place of reference numeral 16) and a horizontal bottom wall 16a having an electrode insertion hole (not shown). The left end of each peripheral wall is connected to the right end of the peripheral wall of the adjacent bus bar accommodating portion 16 by a flexible hinge 20. The bus bar 5 is locked by a claw 16b in the peripheral wall. The voltage detection terminal 13 is in contact with the upper surface of the right half of the bus bar 5, and is locked by the same claw 16b. It is also possible to fix the bus bar 5 and the terminal 13 in the bus bar accommodating portion 16 by insert molding instead of locking.

  A right end electrode (not shown) penetrates through the holes 5a and 13a of the bus bar 5 and the terminal 13 and protrudes upward into the bus bar accommodating portion 16, and is connected to each other by nut tightening. Adjacent electrodes pass through 5a through the left half hole of the bus bar 5 and are similarly connected with nuts.

  For example, a protrusion 12 as an engaging portion with respect to the cover 8 is provided on the front side of the peripheral wall of the bus bar accommodating portion 16, and a latch that engages with the protrusion 12 below the hole 13 of the cover 8 as shown in FIG. 4. A flexible locking piece 11 is provided as a part. The protrusions 12 and the locking pieces 11 are merely examples, and these locking means can be appropriately set as necessary.

  As shown in FIG. 2, the thermistor accommodating portion 18 is narrow between the predetermined bus bar accommodating portion 16 and the rear wire accommodating portion 19 (with a width in the front-rear direction that is about twice the thickness of the thermistor 6). In addition, the bottom side of the bus bar housing part 16 and the bottom side of the wire housing part 19 are connected with a length in the left-right direction that is slightly longer than the overall length of the thermistor 6 in the left and right direction. Is also arranged low.

  3, the thermistor 6 of this example includes a rectangular three-dimensional thermistor main part 6a and a pair of left and right flexible protrusions that protrude diagonally upward from the thermistor main part 6a. (Elastic) operation arm 6b, and a pair of left and right elastic arms 6c protruding outwardly from the middle part in the longitudinal (height) direction of each operation arm 6b and bent in a substantially V shape.

Two electric wires 10 are led out in parallel from the upper end of the thermistor main body 6a. The thermistor main body portion 6a is composed of an outer insulating resin portion (in place of reference numeral 6a) and an inner thermistor element portion (not shown), and the electric wire 10 is connected to the thermistor element portion. Each arm 6b, 6c is formed of an insulating resin material integrally with the insulating resin portion (6a). Resilient arm 6c is composed of obliquely downward of the inner portion 6c 1 and obliquely upward of the outer portion 6c 2.

  The thermistor accommodating portion 18 is provided on the horizontal base wall 21 with a horizontally long opening 22 extending vertically, a drooping portion 23 that continues shortly downward from the base wall 21 at the center of the opening 22, and a lower end side of the drooping portion 23. An annular peripheral wall 24 provided orthogonally, a rectangular thermistor insertion hole 24 a penetrating vertically inside the peripheral wall 24, and a vertical wall 25 extending upward from the left and right ends of the opening 22. And a pair of horizontal ridge walls 26 that project inwardly at the upper end side of the wall 25 and receive the elastic arm 6c of the thermistor 6, and project upward from the base wall 21 above the peripheral wall 24 to the same height as the ridge wall 26. And a pair of vertical forward and left ribs 28 that accommodate and guide the two electric wires 10 of the thermistor 6.

  The pair of vertical ribs 28 are positioned in parallel, and the protruding direction of each rib 28 is forward (horizontal direction). The flange wall 26 has a guide inclined surface 26a that is obliquely downward with respect to the elastic arm 6c on the upper end of the tip.

  The pair of vertical ribs 28 continues integrally along the vertical front wall 29 of the rear-side electric wire housing part 19, and is orthogonal and horizontally upward along the horizontal wall part 30 of the electric-wire housing part 19 in FIG. 2. It becomes a pair of ribs 31 and continues integrally. The pair of horizontal ribs 31 are positioned in parallel, and the protruding direction of each rib 31 is upward (vertical direction).

  The horizontal rib 31 terminates in the center in the width direction of the horizontal wall portion 30, and one rib 31 is curved in the orthogonal direction to become an electric wire guide portion 32, and the front and rear for holding the electric wire in the latter half of the horizontal wall portion 30. It continues to the pair of claws 33. A flexible locking frame piece (locking means) 34, which engages with a protrusion (not shown) on the upper part of the battery, hangs downward at the front and rear ends of the wire accommodating portion 19.

As shown in FIG. 3, the thermistor main body 6 a is inserted into the hole 24 a of the thermistor housing 18 downward from above, and the base ends 6 b 1 of the left and right operation arms 6 b come into contact with the upper ends of the annular peripheral wall 24. The above downward movement is prevented. During normal use, the base end 6b 1 of the operation arm 6b does not contact the peripheral wall 24, and the thermistor main body 6a is supported in the peripheral wall 24 so as to be slidable in the vertical direction. Tip 6c 3 of the resilient arms 6c is elastically brought into contact with the lower surface of the flange walls 26, it presses the thermistor main body portion 6a facing downward. The lower end surface 6a 1 of the thermistor main body 6a is elastically contacted (contacted) with the upper end surface 3a of the battery 3 (in FIG. 3, the bottom dead center position of the thermistor main body 6a is indicated by a chain line).

The battery 3 moves up and down integrally with the thermistor main body 6a by the vibration of the vehicle as shown by the arrows, so that the thermistor main body 6a rises and falls with the electric wire 10 relative to the stationary case 7 on the fixed side (the elastic arm 6c). Move up and down within the range of the deflection stroke). Tip 6c of the elastic arms 6c with the deflection of the resilient arms 6c 3 is slidable horizontally along the lower surface of the flange walls 26. Operating arm 6b is that the purse picking by hand the tip 6b 1 operator, can be brought into engagement riding past a resilient arm 6c smoothly flange walls 26 with a small force.

  The electric wire 10 of the thermistor 6 is guided between the horizontal left and right ribs 31 of the electric wire housing portion 19 through the vertical left and right ribs 28, and along the curved portion 32 from the end of the left and right ribs 31 in FIG. Bently guided to the left side, held between the pair of claws 33, routed to the end of the case 7 along the horizontal wall (base wall) 30, and the end of the case 7 as shown in FIG. To the outside together with other voltage detection wires.

  In this state, as shown in FIG. 4, the cover 8 is mounted on the case 7, and the bus bar 5, the voltage detecting terminal 13, the thermistor 6, and the electric wire 10 of FIG. 2 are covered and safe from interference with the outside. Insulated and protected.

  The cover 8 of FIG. 4 is roughly composed of a left side portion (plate portion) 8a that covers the bus bar 5 and a short side portion (plate portion) 8b that covers the thermistor 6 and its electric wires 10 in the front and rear direction. It is configured in an L shape. Similarly, the substantially U-shaped cover 8 of FIG. 1 covers the bus bar 5 and the like with a left and right portion (plate portion) 8a, and the thermistor with one wide (right side in the drawing) wide front and rear portion (plate portion) 8b. 6 and its electric wire 10 are covered.

  As shown in FIG. 1, the portion 8b on the short side in the front-rear direction of the cover 8 has both side walls 8c perpendicular to the left and right ends of a horizontal plate (substitute with reference numeral 8b), and has a substantially inverted concave shape in the longitudinal section. It is formed in a (reverse saddle shape). The back surface of the plate portion 8b contacts the upper ends of a pair of horizontal ribs 31 (FIG. 2) of the case 7, and the electric wire 10 is covered by the pair of ribs 31 and the plate portion 8b without a gap.

  Further, the side walls 8c of the plate portion 8b are engaged with the outside of the pair of horizontal ribs 31 (there may be a slight gap between the side walls 8c and the ribs 31) to position the cover 8, and A horizontal portion (not shown) of the electric wire 10 of the thermistor 6 is stably held without protruding to the outside by the synergistic action of the horizontal rib 31 and the side walls 8c. The front end (rear end) of the plate portion 8b does not have a vertical rear wall and opens rearward, so that the electric wire 10 can be smoothly inserted rearward (through the electric wire accommodating portion 19).

  When the thermistor 6 moves up and down in the direction of ups and downs with respect to the case 7 integrally with the battery 3 (FIG. 3) due to vehicle vibration or the like, the electric wire 10 of the thermistor 6 is similarly between the pair of left and right ribs 31 (FIG. 2). Smoothly advances and retracts without being caught in the longitudinal direction of the wire.

  The holding claw portion 33 of the electric wire housing portion 19 is far away from the thermistor 6 through the vertical rib 28 (FIG. 3) and the horizontal rib 31 (FIG. 2), and the space between the ribs 28 and 31. 35 and 36 act as a bending (slack) space for the electric wire 10, and the electric wire 10 expands and contracts between the ribs 28 and 31 mainly in the range from the thermistor 6 to the claw portion 33 for holding the electric wire. Therefore, the claw portion 33 does not adversely affect the electric wire 10 such as tension.

  Each claw portion 33 protrudes upward in a substantially L-shaped longitudinal section from a horizontal substrate portion (wall portion) 30, and the thin electric wire 10 is pushed into the wide space 37 inside the pair of claw portions 33 from above to extend the length of the electric wire. There is no worry that a force such as a tensile force acts on the electric wire 10 by inserting the wire 10 so as to freely advance and retract.

As shown in FIG. 4, in the closed state of the cover 8, the front end 8b 1 of the plate portion 8b in the front-rear direction is located at the center in the width (front-rear) direction of the wire insertion portion 19, and the left and right ends 8b 2 of the plate portion 8b, The wall 8c (FIG. 1) is overhanging and positioned outside the pair of horizontal ribs 31 shown in FIG. 2 shows a range in which a portion 38 indicated by a chain line in FIG.

  Both side walls 8c are located outside the horizontal ribs 31 and parallel to the ribs 31. Even if the electric wires 10 jump out of the ribs 31, the electric wires 10 are accommodated inside the both side walls 8c, and the electric wires 10 to the outside. Double out is prevented.

  The first half of the plate portion 8b covers the entire horizontal thermistor 6 except for the left and right ends of the elastic arm 6c. As shown in FIG. 3, since the thermistor 6 is inserted deeply into the bottom side of the case 7, even if the cover 8 is not provided, it is sufficiently protected from interference with the outside. The cover 8 mainly covers the horizontal portion of the electric wire 10 of the thermistor 6 to protect it safely from interference with the outside.

  In the above embodiment, the case 7 is provided with a pair of ribs 31 to guide and protect the electric wires 10. However, for example, when the ribs 31 are not provided, the electric wires 10 are accommodated between the side walls 8 c of the cover 8. Thus, the electric wire 10 can be reliably protected.

  The cover structure of the power supply device according to the present invention can be used to safely protect the electric wires of components such as a thermistor for detecting the temperature of a battery of an electric vehicle including a hybrid car without interference with the outside.

DESCRIPTION OF SYMBOLS 1 Power supply device 2 Battery 4 Bus bar module 5 Bus bar 6 Thermistor (sensor part)
6c Elastic arm 7 Case 8 Cover 8b Plate part 8c Side wall 10 Electric wire 31 Rib

Claims (6)

  1.   A sensor component is mounted in an insulating case of a bus bar module assembled to a battery in a state of being in contact with the battery, and an electric wire of the sensor component is routed along the case, and the bus bar and the sensor component are installed in the case. And a cover structure for the power supply device, wherein an insulating cover for covering the wire and the electric wire is attached.
  2.   The power supply device cover structure according to claim 1, wherein the electric wire is inserted between a pair of ribs provided in the case, and the cover covers the electric wire from above the rib.
  3.   2. The cover structure for a power supply device according to claim 1, wherein the cover has a pair of side walls orthogonal to both sides of the plate portion.
  4.   4. The cover structure for a power supply device according to claim 3, wherein the pair of side walls are positioned outside the pair of ribs according to claim 2.
  5.   The power sensor cover structure according to claim 1, wherein the sensor component is supported by the case with an elastic arm.
  6.   6. The cover structure for a power supply device according to claim 1, wherein the cover is disposed in the case so as to be freely opened and closed for each sensor component.
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JP5345913B2 true JP5345913B2 (en) 2013-11-20

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JP5741230B2 (en) * 2011-06-09 2015-07-01 株式会社オートネットワーク技術研究所 Battery wiring module
JP5648609B2 (en) * 2011-09-06 2015-01-07 株式会社オートネットワーク技術研究所 Battery wiring module
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