JP2014082080A - Positional deviation absorbing member, and bus bar unit - Google Patents

Positional deviation absorbing member, and bus bar unit Download PDF

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Publication number
JP2014082080A
JP2014082080A JP2012228563A JP2012228563A JP2014082080A JP 2014082080 A JP2014082080 A JP 2014082080A JP 2012228563 A JP2012228563 A JP 2012228563A JP 2012228563 A JP2012228563 A JP 2012228563A JP 2014082080 A JP2014082080 A JP 2014082080A
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Prior art keywords
housing
fitting
bus bar
portions
battery
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JP2012228563A
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JP5850338B2 (en
Inventor
Takahiro Kikuchi
孝洋 菊池
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Sumitomo Wiring Syst Ltd
住友電装株式会社
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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; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

Abstract

[PROBLEMS] To reduce mold costs.
A multi-functional member (a misalignment absorbing member) includes a plurality of fitting portions that can be individually fitted to a plurality of receiving members and a plurality of fitting portions. A plurality of elastically flexible connecting portions 43 that are connected so as to be displaceable, and when the plurality of bus bars 21 and 22 accommodated in the accommodating members 24 and 25 are collectively positioned on the electrode 11 of the battery 10, The plurality of fitting portions 41 and 42 are relatively displaced by elastically bending the portion 43.
[Selection] Figure 14

Description

  The present invention relates to a misalignment absorbing member and a bus bar unit used for connecting a plurality of batteries.

  Patent Document 1 discloses a bus bar unit used for connecting a plurality of batteries arranged in parallel. The bus bar unit includes a plurality of bus bars for connecting battery electrodes and a holding member for holding the plurality of bus bars. The holding member includes a plurality of box-shaped storage portions for individually storing a plurality of bus bars, and a plurality of elastically deformable misalignment absorption portions that are bent and connect adjacent storage portions. It is formed integrally. In this bus bar unit, a plurality of bus bars can be collectively positioned on the electrode of the battery by elastically deforming the misalignment absorbing portion according to the shift of the parallel pitch of the batteries.

Japanese Patent No. 3707595

Since the holding member constituting the bus bar unit is formed by integrally forming a plurality of accommodating portions having a box shape and a plurality of misalignment absorbing portions having a bent shape, the holding member is large and complicated in shape. Therefore, the mold for molding this holding member is also large, and the cavity shape of the mold is complicated. When the mold becomes large and the cavity shape becomes complicated, it means that the mold cost increases.
The present invention has been completed based on the above-described circumstances, and an object thereof is to reduce the mold cost.

The misalignment absorbing member of the present invention is
A plurality of fitting portions that can be individually fitted with a plurality of housing members;
A plurality of elastically flexible connecting portions that connect the plurality of fitting portions so as to be capable of relative displacement;
When the plurality of bus bars housed in the housing member are collectively positioned on the battery electrode, the plurality of fitting parts are relatively displaced by elastically bending the connecting part. Has characteristics.

The bus bar unit of the present invention is
Multiple bus bars for connecting multiple battery electrodes;
A plurality of housing members for individually housing the plurality of bus bars;
A misalignment absorbing member made of a single member;
A plurality of fitting portions that are integrally formed with the misalignment absorbing member and can be individually fitted with the plurality of housing members;
A plurality of elastically-flexible connecting portions that are integrally formed with the displacement-absorbing member and connect the plurality of fitting portions so as to be capable of relative displacement;
When the plurality of bus bars are collectively positioned on the battery electrodes, the connecting portions are elastically bent to relatively displace the plurality of fitting portions.

  If the misalignment absorbing member of the present invention is used, even if the battery is misaligned, the connecting portion is elastically bent to relatively displace the position of the bus bar, so that the misalignment of the battery is absorbed, and the plurality of bus bars are connected to the battery. Can be collectively positioned on the electrodes. Since the misalignment absorbing member of the present invention is a component different from the housing member for housing the bus bar, it is small and simple in shape. Therefore, the cost of the mold for forming the misalignment absorbing member can be kept low.

  By using the bus bar unit of the present invention, even if the battery is displaced, the displacement of the battery is absorbed by elastically deflecting the connecting portion to relatively displace the position of the bus bar. Can be collectively positioned. In the bus bar unit of the present invention, the misalignment absorbing member for absorbing the misalignment of the battery and positioning the bus bar on the electrode and the housing member for housing the bus bar are separate parts. The housing member can be made small and simple. Therefore, the cost of the mold for forming the misalignment absorbing member and the housing member can be kept low.

The perspective view of the multifunctional member of the present Example 1 Rear view of first fitting portion constituting multifunctional member AA line sectional view of FIG. BB sectional view of FIG. A perspective view showing a state in which the bus bar is assembled to the housing member Front view of first housing member CC sectional view of FIG. DD sectional view of FIG. Front view of the first bus bar A perspective view showing a state in which batteries are arranged in parallel Front view of the battery EE sectional view of FIG. FF sectional view of FIG. Sectional view showing the state before the busbar unit is attached to the battery Sectional view showing the process of attaching the busbar unit to the battery Sectional view showing the process of attaching the busbar unit to the battery Sectional view showing the busbar unit attached to the battery

The misalignment absorbing member of the present invention is
A protection part in a form that covers the bus bar in a state of being formed in the fitting part and fitting the housing member into the fitting part,
A locking portion that is displaceable between a holding position that holds the housing member in a fitted state with the fitting portion and a release position that releases the housing member from a fitted state with the fitting portion. You may have.
According to this configuration, after positioning the bus bar on the electrode, if the engaging part is displaced from the holding position to the release position and the fitting part is detached from the housing member, bolting for fixing the bus bar to the electrode, etc. Can be done. After fixing the bus bar to the electrode, the connecting portion between the bus bar and the electrode can be protected by the protective portion by fitting the fitting portion to the housing member again.

The misalignment absorbing member of the present invention is
When the bus bar is positioned on the electrode in a state where the housing member is fitted to the fitting portion, the locking portion is moved from the holding position to the release position by the contact action of the release portion provided on the battery side. It may be made to be displaced.
According to this configuration, since the manual operation for displacing the locking portion from the holding position to the release position is unnecessary, the workability is excellent.

<Example 1>
A first embodiment of the present invention will be described below with reference to FIGS. As shown in FIG. 10, the mounting structure of the bus bars 21 and 22 described in the present embodiment is for connecting a plurality of plate-shaped batteries 10 arranged in parallel in the left-right direction so as to be conductive. The battery 10 and one bus bar unit 20 are provided.

  A pair of upper and lower electrodes 11 is provided on the vertically long front end surface of each battery 10, and the (+) electrode 11 and the (−) electrode 11 of the adjacent batteries 10 are arranged upside down. That is, the (+) electrodes 11 and the (−) electrodes 11 are staggered alternately in the vertical direction. The plurality of batteries 10 arranged in parallel on the left and right are connected in series by connecting the (+) electrode 11 and the (−) electrode 11 with the first bus bars 21 arranged in a staggered manner. Each electrode 11 is formed with a female screw hole 12 whose axis is directed in the front-rear direction. Bolts 15 for fixing the bus bars 21 and 22 (see FIG. 5) to the electrode 11 are formed in the female screw hole 12. (See FIGS. 16 and 17).

  As shown in FIGS. 10 to 13, on the front surface of the battery 10, two pairs of elastic arm portions 13 (release portions which are constituent elements of the present invention) are formed so as to sandwich each electrode 11 vertically. Yes. The pair of elastic arm portions 13 are cantilevered forward and can be elastically displaced in the vertical direction. A lock protrusion 14 that protrudes upward or downward toward the pair of elastic arm portions 13 is integrally formed at the front end portion (protruding end portion) of each elastic arm portion 13. The lock protrusion 14 has the same width dimension (dimension in the left-right direction) as that of the elastic arm portion 13, and both the left and right outer surfaces are continuous in a flush manner.

  The pair of elastic arm portions 13 has a function of locking storage members 24 and 25 (see FIG. 5), which will be described later, in an assembled state to the battery 10, and an elastic locking piece 46, which will be described later, from the holding position to the release position. Both the function of forcibly elastically displacing the multifunction member 40 and the accommodating members 24 and 25 to release the fitting and the function of positioning the accommodating members 24 and 25 in the left-right direction with respect to the battery 10 are provided.

  As shown in FIGS. 1, 5, and 14 to 17, the bus bar unit 20 includes a plurality of first bus bars 21, two second bus bars 22, and the same number of first accommodating members 24 as the first bus bars 21. (The same number as the 2nd bus-bar 22) 2nd accommodating member 25, and the multifunctional member 40 (position shift | offset | difference absorbing member which is the component of this invention) consisting of a single component are comprised.

  The first bus bar 21 is made of a horizontally long, substantially rectangular metal plate. As shown in FIGS. 5 and 9, the first bus bar 21 has a pair of left and right connection holes 23. The first bus bar 21 connects the (+) electrode 11 and the (−) electrode 11 of the adjacent batteries 10. The second bus bar 22 is made of a metal plate material having a substantially square shape. As shown in FIG. 5, one connection hole 23 is formed in the second bus bar 22. The second bus bar 22 is connected to the upper electrode 11 that is not connected to the first bus bar 21 among the electrodes 11 of the battery 10 located at both ends in the parallel direction (left-right direction). That is, the plurality of batteries 10 are connected in series via the plurality of first bus bars 21 between the second bus bar 22 on the left side and the second bus bar 22 on the right side in FIG.

  The first housing member 24 is molded by a synthetic resin material (insulating material). As shown in FIGS. 5 to 8, the first housing member 24 includes a peripheral wall portion 26 having a horizontally long rectangular tube whose front and rear surfaces are open, and a frame portion 27 projecting inward from the opening edge of the rear end of the peripheral wall portion 26. Are integrally formed. The first bus bar 21 is housed inside the first housing member 24 by being press-fitted into the peripheral wall portion 26 from the front. The accommodated first bus bar 21 is positioned in the front-rear direction by bringing the outer edge of the rear surface into contact with the frame 27.

  The outer surface (upper surface) of the upper wall portion 28 and the outer surface (lower surface) of the lower wall portion 29 constituting the peripheral wall portion 26 of the first housing member 24 are respectively left and right opened to the rear edge of the first housing member 24. A pair of groove portions 30 is formed. The width dimension of the groove part 30 is a width dimension slightly wider than the elastic arm part 13. The groove portion 30 cooperates with the elastic arm portion 13 to lock the first housing member 24 in the assembled state to the battery 10, and the first housing member 24 with respect to the battery 10 (electrode 11). And also has a function of positioning in the left-right direction. Further, by cooperating with the lock protrusion 14, it also has a function of guiding the first housing member 24 when assembled to the battery 10.

  The second housing member 25 is made of a synthetic resin material (insulating material). As shown in FIG. 5, the second housing member 25 includes a peripheral wall portion 26 having a substantially square rectangular tube shape whose both front and rear surfaces are open, and a frame portion 27 (inwardly projecting from the opening edge of the rear end of the peripheral wall portion 26). (Not shown) are integrally formed. The second bus bar 22 is housed inside the second housing member 25 by being press-fitted into the peripheral wall portion 26 from the front. The accommodated second bus bar 22 is positioned in the front-rear direction by bringing the outer edge of the rear surface into contact with the frame 27.

  The outer surface (upper surface) of the upper wall portion 28 and the outer surface (lower surface) of the lower wall portion 29 constituting the peripheral wall portion 26 of the second housing member 25 are each opened to the rear edge of the second housing member 25. A groove 30 is formed. The width of the groove 30 is the same as that of the groove 30 of the first housing member 24 and is slightly wider than the elastic arm 13. The groove portion 30 cooperates with the elastic arm portion 13 to lock the second housing member 25 in the assembled state to the battery 10, and the second housing member 25 with respect to the battery 10 (electrode 11). And also has a function of positioning in the left-right direction. Further, by cooperating with the lock protrusion 14, the second housing member 25 also has a function of guiding the second housing member 25 when assembled to the battery 10.

  The formation region of the groove portion 30 in the front-rear direction of the first housing member 24 and the second housing member 25 is a range from the substantially central position of the peripheral wall portion 26 (the upper wall portion 28 and the lower wall portion 29) to the rear end. The front end of the groove 30 is formed with a through-hole-shaped lock hole 31 whose outer surface is recessed. The lock projection 14 is inserted into the lock hole 31. On the outer surfaces of the upper wall portion 28 and the lower wall portion 29, locking projections 32 are formed so as to protrude. The locking protrusion 32 is disposed adjacent to the front of the lock hole 31. A locking hole 47 of a later-described elastic locking piece 46 is fitted into the locking projection 32.

  The multifunctional member 40 is molded by a synthetic resin material. As shown in FIG. 1, the multi-function member 40 includes the same number of first fitting portions 41 as the first housing member 24 and the first bus bar 21 and two (the same number as the second housing member 25 and the second bus bar 22). The second fitting portion 42 and the plurality of connecting portions 43 are integrally formed. The multi-function member 40 has a function of collectively positioning and holding a plurality of receiving members 24 and 25 (bus bars 21 and 22) so as to be in an arrangement corresponding to the predetermined electrode 11, and a holding member 24 collectively held. , 25 and the bus bars 21 and 22 are collectively positioned and attached to the battery 10 and the electrode 11. In addition, when the parallel pitch of the battery 10 is shifted, the multifunctional member 40 corrects the positions of the housing members 24 and 25 and the bus bars 21 and 22 corresponding to the positional shift of the electrode 11, thereby It also has a function of absorbing 10 positional deviations.

  As shown in FIGS. 1-4, the 1st fitting part 41 is the flat 1st protection part 44 which makes a horizontally long substantially rectangular shape, and two pairs of elastic locking pieces 46 (the relationship which is a constituent requirement of this invention). (Stop part) and are formed integrally. The first protection part 44 is configured to block the entire opening on the front surface of the first housing member 24. The two pairs of elastic locking pieces 46 that are vertically opposed to each other form a pair, and are arranged with a space left and right. As shown in FIG. 1, the second fitting portion 42 is configured by integrally forming a flat plate-like second protection portion 45 having a vertically long rectangle and a pair of upper and lower elastic locking pieces 46. The second protection part 45 is configured to block the entire opening on the front surface of the second housing member 25.

  The elastic locking pieces 46 paired up and down are in a form that cantilevered from the upper and lower edges of the protective portions 44 and 45 to the rear. A through hole type locking hole 47 is formed at the rear end portion (extending end portion) of the elastic locking piece 46. The elastic locking piece 46 always maintains a holding position (see FIGS. 14 and 17) where the locking hole 47 can be fitted with the locking protrusion 32 of the housing members 24 and 25. The hole 47 can be elastically displaced to a release position (see FIG. 15) where the hole 47 is released from fitting with the locking protrusion 32.

  As shown in FIG. 1, the plurality of first fitting portions 41 are arranged in a staggered manner in two upper and lower stages. That is, the upper plurality of first fitting portions 41 and the lower plurality of first fitting portions 41 are arranged in a line in the left-right direction. The lower first fitting portion 41 has a positional relationship that is shifted to the left and right. The number of upper first fitting portions 41 is one less than the number of lower first fitting portions 41. The two second fitting portions 42 are arranged so as to sandwich the upper first fitting portion 41 from the left and right.

  The connecting portion 43 has a plate shape curved in a substantially semicircular arc shape and can be elastically deformed. The connecting portion 43 has a function of connecting adjacent fitting portions 41 and 42 and a relative displacement of the battery 10 by moving the fitting portions 41 and 42 connected in the left and right directions so as to approach and separate from each other. It also has a function to absorb water. In the upper stage, the first fitting parts 41 adjacent to each other on the left and right are connected by one connecting part 43, and the second fitting part 42 and the first fitting part 41 located at the end are one. They are connected by a connecting portion 43. In the lower stage, the first fitting parts 41 adjacent to each other on the left and right are connected by one connecting part 43.

  Further, between the upper stage and the lower stage, the upper second fitting part 42 and the two first fitting parts 41 positioned at the extreme ends in the lower stage are only connected by one connecting part 43. . The upper first fitting portion 41 and the lower first fitting portion 41 are not connected by the connecting portion 43. Therefore, the upper first fitting portion 41 and the lower first fitting portion 41 can be relatively displaced in the left-right direction independently of each other.

  Next, an operation process for connecting the bus bars 21 and 22 to the electrode 11 will be described. First, as shown in FIG. 5, the first bus bar 21 is housed in the first housing member 24, and the second bus bar 22 is housed in the second housing member 25. Next, as shown in FIG. 14, the first housing member 24 is fitted to the first fitting portion 41 from the rear, and the second housing member 25 is fitted to the second fitting portion 42 from the rear. In the fitted state, the protective portions 44 and 45 abut against the front surfaces of the housing members 24 and 25 and cover the entire opening, thereby preventing foreign matter interference with the bus bars 21 and 22.

  Further, the elastic locking pieces 46 come into contact with the outer surfaces of the upper wall portion 28 and the lower wall portion 29 of the housing members 24 and 25, so that the fitting portions 41 and 42 and the housing members 24 and 25 are vertically moved. The relative displacement in the direction is restricted and the positioning is achieved. Furthermore, when the locking hole 47 is locked to the locking projection 32, the fitting portions 41 and 42 and the housing members 24 and 25 are moved in the left-right direction and the front-rear direction (the fitting portions 41 and 42 and the housing member 24, In this state, the relative displacement in the direction in which 25 is separated is restricted and positioned. In a state where the locking hole 47 and the locking projection 32 are locked, the extended end portion (rear end portion) of the elastic locking piece 46 corresponds to the lock hole 31 so as to cover the lock hole 31 from the outer surface side. To position. In this way, the plurality of housing members 24 and 25 are held in the assembled state with respect to the multifunctional member 40 (the fitting portions 41 and 42), whereby the bus bar unit 20 is configured as shown in FIG. Is done.

  The bus bar unit 20 assembled in this way is attached to the battery 10 from the front. At the time of attachment, the receiving members 24 and 25 are inserted between the upper and lower elastic arm portions 13 so that the groove portions 30 are fitted to the lock protrusions 14 in a state where the elastic arm portions 13 are elastically deformed. To do. Then, the housing members 24 and 25 are restricted from moving up and down between the upper and lower elastic arm portions 13, and the battery 10 (electrode 11) is engaged with the lock protrusion 14 and the groove 30. Thus, the housing members 24 and 25 are positioned in the left-right direction (the direction in which the batteries 10 are arranged). At this time, the parallel pitch of the batteries 10 has low accuracy, and most of the electrodes 11 are displaced in the left-right direction. However, the groove portion 30 and the elastic arm portion 13 can be fitted by elastically deforming the connecting portion 43 that connects the fitting portions 41 and 42 adjacent to each other on the left and right sides to absorb the positional deviation (pitch deviation). it can.

  As the assembly of the bus bar unit 20 proceeds, as shown in FIG. 15, the elastic arm portion 13 is elastically deformed, and its extended end (front end) contacts the extended end (rear end) of the elastic locking piece 46. A release position (accommodating member) in which the elastic locking piece 46 at the holding position (the position where the accommodating members 24, 25 are held in the fitted state with the fitting portions 41, 42) is moved away from the outer surface of the accommodating members 24, 25. 24 and 25 are elastically displaced to a position where they are released from the fitted state with the fitting parts 41 and 42. With the elastic displacement of the elastic locking piece 46, the locking hole 47 is disengaged from the locking projection 32. Therefore, manual work for displacing the elastic locking piece 46 from the holding position to the release position is unnecessary, and workability is improved. Are better.

  Further, as described above, the accuracy of the parallel pitch of the batteries 10 is relatively low, and most of the connecting portions 43 are elastically deformed when the bus bar unit 20 is assembled to the battery 10. Therefore, as the locking hole 47 is disengaged from the locking projection 32, the fitting portions 41 and 42 are slightly displaced from side to side with respect to the housing members 24 and 25 due to the elastic restoring force of the connecting portion 43, The locking hole 47 is displaced from side to side with respect to the locking projection 32.

  Immediately after the locking hole 47 is disengaged from the locking protrusion 32 and shifted to the left and right, the elastic arm portion 13 is elastically restored and the lock protrusion 14 is fitted into the lock hole 31 as shown in FIG. Due to the locking of the lock protrusion 14 and the lock hole 31, the housing members 24 and 25 are restricted from being detached forward from the battery 10. During this time, the housing members 24 and 25 are maintained in a state where positional deviation in the left-right direction with respect to the battery 10 is restricted. Thus, the housing members 24 and 25 are locked in the assembled state with respect to the battery 10.

  Further, since the locking hole 47 (elastic locking piece 46) is displaced to the left and right with respect to the locking projection 32, even if the elastic arm portion 13 is elastically restored and dissociated from the elastic locking piece 46, The elastic locking piece 46 is kept on the locking projection 32. Therefore, after the housing members 24 and 25 are assembled to the battery 10, the multifunctional member 40 can be detached from the housing members 24 and 25 and the battery 10 by pulling forward.

  After removing the multi-function member 40, the bolt 15 passed through the connection hole 23 is screwed into the female screw hole 12, and the bus bars 21, 22 are fixed to the electrode 11 so as to be conductive. Thereby, the adjacent batteries 10 are connected in series via the bus bars 21 and 22. After all the bus bars 21 and 22 are fixed to the electrode 11, as shown in FIG. 17, the fitting portions 41 and 42 of the multi-function member 40 are again assembled to the housing members 24 and 25, and the elastic locking pieces 46 and The lock projection 14 is locked to lock in the assembled state. When the multi-function member 40 is assembled, the connection portions of the bus bars 21 and 22 with the electrodes 11 and the bolts 15 are covered with the protection portions 44 and 45, so that they are protected from the interference of foreign matters from the outside.

  The bus bar unit 20 of this embodiment includes a plurality of bus bars 21 and 22 for connecting the electrodes 11 of the plurality of batteries 10, a plurality of housing members 24 and 25 for individually housing the plurality of bus bars 21 and 22, The multifunctional member 40 which consists of one member is provided. The multi-functional member 40 is capable of elastic bending to connect a plurality of fitting portions 41 and 42 that can be individually fitted to the plurality of housing members 24 and 25 and the plurality of fitting portions 41 and 42 so as to be relatively displaceable. A plurality of connecting portions 43 are provided. When the plurality of bus bars 21 and 22 are collectively positioned on the electrode 11 of the battery 10, the plurality of fitting portions 41 and 42 are relatively displaced by elastically bending the connecting portion 43. .

  If this bus bar unit 20 (multifunctional member 40) is used, even if the battery 10 is displaced, the position of the battery 10 is displaced by elastically bending the connecting portion 43 to relatively displace the positions of the bus bars 21, 22. The plurality of bus bars 21 and 22 can be collectively positioned on the electrode 11 of the battery 10. Since the multifunction member 40 of the present embodiment is a component different from the housing members 24 and 25 for housing the bus bars 21 and 22, it is small and simple in shape. Therefore, the cost of the mold for forming the multifunctional member 40 can be kept low.

  In addition, the mounting structure of the bus bars 21 and 22 according to the present embodiment includes a plurality of batteries 10 having electrodes 11, an elastic arm portion 13 provided on the battery 10 side, and a bus bar unit 20. The bus bar unit 20 includes a plurality of bus bars 21 and 22 connected to the electrode 11, a plurality of storage members 24 and 25 that individually store the plurality of bus bars 21 and 22, and a single member. , 25 are formed in the multi-function member 40 formed with a plurality of fitting portions 41, 42 that can be individually fitted, and the fitting portions 41, 42, and the housing members 24, 25 are turned into the fitting portions 41, 42. Protection portions 44 and 45 that cover the bus bars 21 and 22 in a fitted state, and elastic locking pieces 46 formed on the fitting portions 41 and 42 are provided. The elastic locking pieces 46 release the holding members 24 and 25 from the fitted state with the fitting parts 41 and 42 and the holding position for holding the containing members 24 and 25 in the fitted state with the fitting parts 41 and 42. When the bus bars 21 and 22 are positioned on the electrode 11, the elastic arms 13 are displaced from the holding position to the releasing position.

  According to this configuration, the bus bars 21 and 22 housed in the housing members 24 and 25 are covered with the protection portions 44 and 45 before the bus bars 21 and 22 are positioned on the electrodes 11, thereby the bus bar 21. , 22 can prevent adhesion of foreign matter. Further, when the bus bars 21 and 22 are positioned with respect to the electrode 11, the elastic locking piece 46 is displaced from the holding position to the release position by the elastic arm portion 13, and the accommodating members 24 and 25 are fitted to the fitting portion 41. , 42 is released from the fitted state, so that the operator does not have to perform an operation for displacing the elastic locking piece 46 to the release position. Moreover, since the multi-function member 40 in which the fitting portions 41 and 42 are formed is a single member, the work of removing the plurality of fitting portions 41 and 42 from the plurality of housing members 24 and 25 can be performed with one action. It can be carried out. Therefore, it is excellent in workability.

<Other embodiments>
The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention.
(1) In the above embodiment, when the bus bar is positioned on the electrode in a state where the accommodating member is fitted to the fitting portion, the locking portion is released from the holding position by the contact action of the release portion provided on the battery side. However, according to the present invention, the locking portion may not be displaced to the release position when the bus bar is positioned on the electrode.
(2) In the above embodiment, the protective portion that covers the bus bar is formed in the fitting portion, and the misalignment absorbing member is once removed during the operation of fixing the bus bar to the electrode. According to this, the fixing operation between the bus bar and the electrode may be performed without forming the protective portion in the fitting portion and keeping the misalignment absorbing member fitted in the housing member. In this case, after fixing the bus bar and the electrode, the misalignment absorbing member may be kept fitted with the housing member or may be detached from the housing member.
(3) In the above embodiment, after fixing the bus bar to the electrode, the positioning absorbing member is again fitted to the housing member so as to cover the connection portion between the bus bar and the electrode. After fixing the bus bar to the electrode, a protective member different from the positioning / absorbing member may be fitted into the housing member to cover and conceal the connection portion between the bus bar and the electrode.
(4) In the above embodiment, the female screw hole is formed in the electrode, but a stud bolt may be provided in the electrode. In this case, the bus bar can be positioned with respect to the electrode by fitting the mounting hole of the bus bar to the stud bolt.

DESCRIPTION OF SYMBOLS 10 ... Battery 11 ... Electrode 13 ... Elastic arm part (release part)
DESCRIPTION OF SYMBOLS 20 ... Bus bar unit 21 ... 1st bus bar 22 ... 2nd bus bar 24 ... 1st accommodating member 25 ... 2nd accommodating member 40 ... Multifunctional member (position shift | offset | difference absorbing member)
DESCRIPTION OF SYMBOLS 41 ... 1st fitting part 42 ... 2nd fitting part 43 ... Connection part 44 ... 1st protection part 45 ... 2nd protection part 46 ... Elastic locking piece (locking part)

Claims (4)

  1. A plurality of fitting portions that can be individually fitted with a plurality of housing members;
    A plurality of elastically flexible connecting portions that connect the plurality of fitting portions so as to be capable of relative displacement;
    When the plurality of bus bars housed in the housing member are collectively positioned on the battery electrode, the plurality of fitting parts are relatively displaced by elastically bending the connection part. A misalignment absorbing member as a feature.
  2. A protective portion formed in the fitting portion, covering the bus bar in a state where the housing member is fitted in the fitting portion;
    A locking portion that is displaceable between a holding position that holds the housing member in a fitted state with the fitting portion and a release position that releases the housing member from a fitted state with the fitting portion. The misalignment absorbing member according to claim 1, wherein the misalignment absorbing member is provided.
  3.   When the bus bar is positioned on the electrode in a state where the housing member is fitted to the fitting portion, the locking portion is moved from the holding position to the release position by the contact action of the release portion provided on the battery side. The misalignment absorbing member according to claim 2, wherein the misalignment absorbing member is displaced.
  4. Multiple bus bars for connecting multiple battery electrodes;
    A plurality of housing members for individually housing the plurality of bus bars;
    A misalignment absorbing member made of a single member;
    A plurality of fitting portions that are integrally formed with the misalignment absorbing member and can be individually fitted with the plurality of housing members;
    A plurality of elastically-flexible connecting portions that are integrally formed with the displacement-absorbing member and connect the plurality of fitting portions so as to be capable of relative displacement;
    The bus bar unit, wherein when the plurality of bus bars are collectively positioned on the battery electrode, the plurality of fitting portions are relatively displaced by elastically bending the connecting portion.
JP2012228563A 2012-10-16 2012-10-16 Misalignment absorbing member and bus bar unit Expired - Fee Related JP5850338B2 (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
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JP2017084491A (en) * 2015-10-23 2017-05-18 株式会社オートネットワーク技術研究所 Power storage module and battery connection module

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