JP2017068912A - Battery wiring module - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a battery wiring module that can easily perform a routing work of electrical wires by routing the electric wires while tension is applied to the electrical wires, and set the electrical wires to a state in which unnecessary tension is not applied to the electric wires after the routing work.SOLUTION: A battery wiring module includes a support shaft portion erected in an electric wire housing groove 38, a boss portion 46 fitted to the support shaft portion, a protruding portion 48 protruding from the side surface of the boss portion 46, and locking means for releasably locking the boss portion 46 to the support shaft portion while the protruding portion 48 faces a predetermined direction. The locking means is provided to be switchable between a first position C at which the protruding portion 48 is locked to a protruding state so that the wiring length increases under the state that a voltage detecting electric wire 36 is wired to be wound around the outside of the protruding portion 48, and a second position D at which the protruding portion 48 escapes from the voltage detection electric wire 36 to vanish the tension of the voltage detection electric wire 36.SELECTED DRAWING: Figure 11

Description

  The present invention relates to a battery wiring module used for a battery pack in which a plurality of batteries are arranged side by side.

  A battery pack for an automobile has a configuration in which a plurality of batteries each having a positive electrode terminal and a negative electrode terminal are arranged side by side. Specifically, the positive terminal of one adjacent battery and the negative terminal of the other battery are connected by a bus bar so that the plurality of batteries are connected in series. In such a battery pack, a battery wiring module having a voltage detection terminal is used to measure the voltage value at each bus bar and inspect the state of the battery pack (see, for example, Patent Document 1).

  Patent Document 1 discloses a battery wiring module that is attached to a single battery group, and includes a plurality of bus bars that connect between electrode terminals of a battery, a resin protector formed by connecting a plurality of unit connection units, and a single unit. And a sensing wire for detecting the state of the battery group. A voltage detection terminal is attached to one end of the detection wire, and this is electrically connected to the bus bar. Further, the unit connecting unit is provided with a wire housing groove for housing the detection wire, and a wire pressing piece for preventing the detection wire from protruding from the wire housing groove is provided protruding from the groove wall side.

JP 2012-252781 A (FIGS. 2 and 4) Japanese Patent Laying-Open No. 2003-32868 (FIG. 5)

  The wires that are routed inside the battery wiring module take into account not only the wire length tolerance caused by the wire cutting operation, but also the rotation of the voltage detection terminal, the thermal expansion of the battery itself, and the temperature change in the battery pack. In many cases, the extra length is set longer than that of a normal wire harness.

  However, if the extra length of the electric wire is set long, the electric wire is violated and the wiring workability of the electric wire in the battery wiring module is deteriorated. For this reason, some extra length absorption structure is required in the battery wiring module.

  In the battery wiring module disclosed in Patent Document 1, only an electric wire pressing piece for preventing the detection electric wire from protruding from the electric wire housing groove is provided, and no surplus length absorbing structure is provided.

  On the other hand, as a surplus length absorption structure of a battery wiring module, Patent Document 2 describes a main part having an arch-shaped harness holding elastic plate 21 that accommodates a surplus harness length portion S in an absorbed state. In response to the movement of a moving body such as an automobile tilt mechanism or telescopic mechanism, the harness surplus portion S provided in the middle of the wire harness 10 is expanded and contracted, and the expansion and contraction operation is performed in an arch-shaped harness holding elastic plate 21. This is supported by an expansion / contraction operation by elastic deformation (see FIG. 13).

  However, the harness surplus length absorbing device 20 described in Patent Literature 2 cannot freely switch between the contracted state and the expanded state of the harness surplus length portion S. Therefore, if it is used as a surplus length absorbing structure in the battery wiring module, the harness surplus length portion S cannot be kept in an expanded state after the wiring operation. That is, the electric wire is kept under tension and cannot flexibly cope with the rotation of the voltage detection terminal or the thermal expansion of the battery.

  The present invention has been made in order to solve the above-described problems, and it is possible to easily perform the wiring operation of the electric wire by arranging the electric wire in a tensioned state, and to the electric wire after the wiring. It is an object of the present invention to provide a battery wiring module that can be brought into a state in which unnecessary tension is not applied.

  In order to achieve the above object, a battery wiring module according to the present invention includes a battery group in which a plurality of batteries are arranged, a plurality of bus bars that electrically connect positive and negative terminals of the adjacent batteries, The battery group having a conductive member provided on the top surface of the bus bar has a bottom surface portion and four side surface portions on the top surface of the battery group, a through hole is provided in the bottom surface portion, and the conductive material is provided in the through hole. A case attached in a state where a conductive member is inserted, and a plurality of cases disposed on the bottom surface so as to be electrically connected to the conductive member in the case when the case is attached to the upper surface of the battery group. A voltage detection terminal, a plurality of voltage detection wires connected at one end to each of the voltage detection terminals, and the voltage detection wire formed in the case along an array of the bus bars. Only A battery wiring module having a wire housing groove that leads to the outside of the case through the wire outlet portion, and a lid that closes the wire housing groove, and a support shaft portion standing in the wire housing groove, and the support shaft A boss part fitted to the part, a projecting part projecting from a side surface of the boss part, and a locking means for releasably locking the boss part to the support shaft part in a state where the projecting part is oriented in a predetermined direction; And the locking means is locked in a state in which the protruding portion protrudes so that the wiring length becomes large in a state where the voltage detection wire is wound around the outside of the protruding portion. 1 and a second position in which the protruding portion escapes from the voltage detection wire and disappears the tension of the voltage detection wire.

  With the above configuration, when the voltage detection wire is routed in the battery wiring module, the protruding portion is set at the first position, and the voltage detection wire is wound around the outside of the protruding portion and wired. Try to increase the length. As a result, tension is applied to the voltage detection wire and the voltage detection wire is not violated, thereby facilitating the wiring work. Further, after the voltage detection wire is routed, the projecting portion is switched to the second position, and the tension of the voltage detection wire is lost so that the projecting portion escapes from the voltage detection wire. Thereby, since the voltage detection electric wire has a surplus length, it can flexibly cope with rotation of the voltage detection terminal, thermal expansion of the battery itself, temperature change in the battery pack, and the like.

  In addition, the battery wiring module according to the present invention further includes an outer lid that covers the upper surface of the case, and the outer lid is formed with an operation hole through which a rotating jig for rotating the boss portion is passed. It may be.

  With the above configuration, the hole for operation through which the rotating jig for rotating the boss is passed is formed in the outer cover of the battery wiring module. In this state, the boss portion can be rotated to switch the protruding portion to the second position. As a result, the outer lid can be closed in a state where the voltage detection electric wire is tensioned, so that the voltage detection electric wire is prevented from being bitten.

  According to the present invention, the battery wiring can be performed in such a manner that the wiring operation can be easily performed by wiring in a state where tension is applied to the electric wire, and unnecessary tension is not applied to the electric wire after wiring. Modules can be provided.

It is a top view of the battery group to which the battery wiring module which concerns on embodiment of this invention is attached. It is a top view of the battery wiring module which concerns on embodiment of this invention. FIG. 6 is a plan view of a state in which the battery wiring module is covered with an outer lid on one side and the protruding portion in the surplus length adjusting mechanism is in the first position according to the embodiment of the present invention. FIG. 6 is a plan view of a state in which the battery wiring module is covered with outer lids on both sides and the protruding portion in the surplus length adjusting mechanism is in the second position according to the embodiment of the present invention. FIG. 4 is a partial enlarged perspective view of an outer lid according to the embodiment of the present invention. FIG. 6 is a partially enlarged perspective view of a support shaft portion in a surplus length adjusting mechanism portion according to the embodiment of the present invention. It is a partial enlarged plan view of a support shaft part in a surplus length adjustment mechanism part concerning an embodiment of the invention. (A) is the perspective view which looked at the boss | hub part and protrusion part in a surplus length adjustment mechanism part from the downward direction, (b) is the top view, (c) is a bottom view concerning embodiment of this invention. is there. (A) is a perspective view before fitting a boss part on a support shaft part, (b) is a perspective view in the middle of fitting, and (c) is fitted. It is a perspective view of a state, (d) is AA sectional drawing of (c). It is sectional drawing explaining the locking mechanism in the surplus length adjustment mechanism part which concerns on embodiment of this invention. FIG. 5A is a partial plan view showing a state in which a protruding portion in the surplus length adjusting mechanism portion is in a first position during wiring operation of the wire, and FIG. It is a fragmentary top view which shows the state in which the protrusion part in a surplus length adjustment mechanism part exists in a 2nd position after a cable work. It is a top view explaining the movable range of the protrusion part in the surplus length adjustment mechanism part which concerns on embodiment of this invention. It is a figure explaining the harness surplus length absorber disclosed by patent document 2. FIG.

  Hereinafter, a battery wiring module according to an embodiment of the present invention will be described with reference to the drawings.

  In addition, in the following description, about the some same member, a code | symbol may be attached | subjected to one member and a code | symbol may be abbreviate | omitted about another member.

  First, as shown in FIG. 1, the battery pack to which the battery wiring module 30 is attached is configured to electrically connect a battery group 1 in which a plurality of batteries 2 are arranged, and a positive electrode terminal 3 and a negative electrode terminal 4 of an adjacent battery 2. And a plurality of bus bars 5 connected to each other, and a conductive member 6 provided on the upper surface of each bus bar 5. Specifically, the battery group 1 is configured by arranging a plurality of batteries 2 such that a positive electrode terminal 3 of one battery 2 and a negative electrode terminal 4 of another adjacent battery 2 are alternately arranged. And the some bus bar 5 has connected the positive electrode terminal 3 and the negative electrode terminal 4 which adjoined so that the battery group 1 might be connected in series.

  The battery wiring module 30 includes a metal bolt (conductive member 6) erected on the upper surface of each bus bar 5, a through-hole 32c formed in a bottom surface portion 32a of the case 32, which will be described later, and a voltage detection terminal. It is attached to the battery pack by passing through the holes 34a of the 34 in order and tightening the nuts. In addition, the battery wiring module 30 of this embodiment is applicable also to the battery pack in which the battery group 1 was connected in parallel.

  As shown in FIG. 2, the battery wiring module 30 includes a case 32, a plurality of voltage detection terminals 34, a plurality of voltage detection wires 36, a wire housing groove 38, a lid 55, and a surplus length adjustment mechanism unit. 42.

  The case 32 has a bottom surface portion 32a and four side surface portions 32b, and a through hole 32c is formed in the bottom surface portion 32a. The case 32 is attached to the upper surface of the battery group 1 in a state where the conductive member 6 provided on the upper surface of each bus bar 5 is inserted into the through hole 32c.

  The voltage detection terminal 34 is configured to be disposed on the bottom surface portion 32 a so as to be electrically connected to the conductive member 6 in the case 32 when the case 32 is attached to the upper surface of the battery group 1. Specifically, the voltage detection terminal 34 is made of a conductive plate, has a hole 34a in the vicinity of the center thereof, and the conductive member 6 standing on the bus bar 5 on the battery pack side passes through the hole 34a. Are arranged side by side at the positions of the through holes 32 c in the bottom surface portion 32 a of the case 32. A terminal receiving wall 32e is provided on the bottom surface 32a of the case 32, and an area in which each voltage detection terminal 34 is arranged is defined.

  One end of the voltage detection wire 36 is connected to each voltage detection terminal 34 by any means such as soldering or crimping. Further, the voltage detection terminal 34 and the voltage detection electric wire 36 are for detecting the voltage at the bus bar 5 connecting the batteries 2 of the battery group 1 and are used for detecting other physical quantities such as current and temperature. May be. Hereinafter, the voltage detection electric wire 36 may be simply referred to as an electric wire.

  The electric wire accommodation groove 38 is formed in the case 32 along the arrangement of the plurality of bus bars 5, and is configured to accommodate the voltage detection electric wire 36 and guide it to the outside of the case through the electric wire outlet portion 32d.

  The lid 55 closes the electric wire receiving groove 38 and protects the voltage detecting electric wire 36 accommodated in the electric wire accommodating groove 38 and prevents the accommodated voltage detecting electric wire 36 from protruding from the electric wire accommodating groove 38. It is like that. However, the knob portion 54 of the surplus length adjusting mechanism portion 42 is not covered with the lid 55.

  The surplus length adjusting mechanism portion 42 includes a support shaft portion 44 erected in the wire receiving groove 38, a boss portion 46 fitted on the support shaft portion 44, a protrusion portion 48 protruding from the side surface of the boss portion 46, Locking means.

  The support shaft portion 44 is a synthetic resin member and is integrally formed with the case 32. However, if necessary, the support shaft portion 44 may be formed as a separate member from the case 32 and attached to the wire receiving groove 38 of the case 32. As shown in FIGS. 6 and 7, on the outer peripheral surface of the support shaft portion 44, a plurality of ridge portions 50 are formed in the axial direction at equal intervals as a locking means. The support shaft portion 44 is provided at an inner corner portion of the portion where the wire receiving groove 38 is bent in an L shape. Providing at this location is preferable because the wiring length of the voltage detection wire 36 can be efficiently increased by the protrusion 48.

  The boss portion 46 is a member made of synthetic resin. As shown in FIGS. 8A and 8C, a plurality of lock means are provided on the inner peripheral surface of the shaft hole formed from the lower end surface of the boss portion 46. Are formed at equal intervals in the axial direction. As shown in FIG. 8B, a knob portion 54 for rotating the boss portion 46 is formed on the upper end surface of the boss portion 46.

  The protruding portion 48 is a synthetic resin member and is formed integrally with the boss portion 46. The protruding portion 48 protrudes from the side surface of the boss portion 46 with a required width in the axial direction and the circumferential direction. In FIG. 8B, the protrusion 48 is curved in the clockwise direction in the middle, and the tip is configured to be rounded. By curving in this way, the voltage detecting wire 36 can be smoothly guided when the protrusion 48 is in a position where no tension is applied to the voltage detecting wire 36 (FIG. 11B). Since the tip of the protrusion 48 is rounded, when the protrusion 48 is in a position to apply tension to the voltage detection wire 36 (FIG. 11A), the voltage detection wire 36 is smoothly guided. Can do.

  FIGS. 9A to 9C show a state where the boss portion 46 is fitted on the support shaft portion 44 and the surplus length adjusting mechanism portion 42 is assembled. In the surplus length adjusting mechanism portion 42, as shown in FIG. 9 (d), the convex portion formed on the outer peripheral surface of the support shaft portion 44 is formed on the concave strip portion 52 formed on the inner peripheral surface of the shaft hole of the boss portion 46. The strip 50 is fitted with a margin.

  The ridge portion 52 on the boss portion 46 side as the locking means and the ridge portion 50 on the support shaft portion 44 side can release the boss portion 46 to the support shaft portion 44 in a state where the protruding portion 48 faces a predetermined direction. It is something to lock.

  Specifically, when the protruding portion 48 is in the position shown in FIG. 10A, when the boss portion 46 is slightly rotated clockwise, as shown in FIG. The wall portion of the concave strip portion 52 of the boss portion abuts on the portion 50 so that it cannot rotate any further. That is, the boss portion 46 is locked to the support shaft portion 44. In this state, when the boss portion 46 is rotated slightly in the clockwise direction, the wall portions of the protruding ridge portion 50 and the concave ridge portion 52 that are in contact with each other are elastically deformed, and the wall portion of the ridge portion 52 is protruded. Go over one section 50 (FIG. 10C). That is, the lock is released. Then, the recess 52 is fitted and locked to the next protrusion 50 (FIG. 10D). In this way, the protrusion 48 can be rotated by a rotation angle corresponding to one protruding line 50 or one recessed line 52.

  The surplus length adjusting mechanism portion 42 is provided with an arbitrary stopper in order to limit the rotation range. In FIG. 12, the wall part 32g provided in the case 32 is a stopper. The movable range of the protrusion 48 of the surplus length adjusting mechanism 42 in this case is indicated by an arrow B. The angle of the protrusion 48 can be changed by a predetermined rotation angle between the state shown in FIG. 12A and the state shown in FIG.

  The protrusion 48 of the surplus length adjusting mechanism 42 can be switched between a first position C shown in FIG. 11A and a second position D shown in FIG. 11B by operating the knob 54. It is. The first position C is a position where the protruding portion 48 is locked in a protruding state so that the wiring length is increased in a state where the voltage detection electric wire 36 is wound around the outside of the protruding portion 48 and wired. . At this position, a necessary tension is applied to the voltage detection wire 36. The second position D is a position where the protruding portion 48 escapes from the voltage detection wire 36 and the tension of the voltage detection wire 36 disappears.

  In the battery wiring module 30 of FIG. 2, one extra length adjusting mechanism portion 42 is provided at the inner corner of the lower wire receiving groove 38 in the drawing, but the upper wire receiving groove 38 in the drawing is similarly configured. A surplus length adjusting mechanism may be provided.

  As shown in FIGS. 3 and 4, a synthetic resin outer lid 56 covering the upper surface of the case 32 may be provided. FIG. 3 shows a state where only half of the battery wiring module 30 is covered with the outer lid 56, and FIG. 4 shows a state where the entire surface is covered with the two outer lids 56. The outer lid 56 can be opened and closed via a hinge 60. An engagement claw 62 is provided on the inner surface of the outer lid 56 at the end facing the hinge 60 side, and the battery is engaged with the engagement hole 58 formed in the bottom surface portion 32a of the case 32. The wiring module 30 is closed from the upper surface side. In FIG. 4, the entire surface of the battery wiring module 30 is covered with the two outer lids 56, but the entire surface may be covered with one outer lid.

  As shown in FIG. 5, the outer lid 56 is formed with an operation hole 56 a through which a turning jig for turning the boss portion 46 is passed. With this configuration, the knob portion 54 of the surplus length adjusting mechanism portion 42 can be operated from the outside with any appropriate turning jig while the outer lid 56 is closed. Instead of the rotating jig, an operation hole 56a having a diameter that can be operated with a finger may be formed.

  Further, the lid 55 may cover the wire receiving groove 38 including the surplus length adjusting mechanism 42. In this case, an operation hole for passing a turning jig for turning the boss portion 46 may be formed in the lid 55. In this way, even when the lid 55 is closed and the outer lid 56 is closed from above, the knob portion 54 of the surplus length adjusting mechanism portion 42 can be operated from the outside with any appropriate turning jig. it can.

  Next, a method for assembling the battery wiring module 30 according to the present embodiment will be described.

  The voltage detection terminal 34 is connected to the end of the voltage detection wire 36 in advance by appropriate means such as soldering or crimping. And the voltage detection electric wire 36 is accommodated in the electric wire accommodation groove | channel 38, arrange | positioning the voltage detection terminal 34 in the predetermined position of the case 32 (wire arrangement work). At the time of this routing work, the surplus length adjusting mechanism 42 is set to the first position C shown in FIG. When the routing work is finished, the lid 55 is closed, and then the outer lid 56 is closed. In this state, the assembly is completed by operating the knob 54 of the surplus length adjusting mechanism 42 from the outside to the second position D shown in FIG.

  As described above, in the battery wiring module 30 according to the present embodiment, the first position C where the tension is applied to the voltage detection wire 36 and the second position D where the tension disappears and a margin is provided. The position of the protrusion 48 of the surplus length adjusting mechanism 42 can be switched. When the voltage detection wire 36 is routed in the battery wiring module 30, the protruding portion 48 is set at the first position C, and the voltage detecting wire 36 is wound around the outside of the protruding portion 48 and wired. The wiring length is increased in the state. As a result, tension is applied to the voltage detection electric wire 36 and the voltage detection electric wire 36 is not violated, so that the wiring work is facilitated.

  After the voltage detection wire 36 is routed, the protruding portion 48 of the extra length adjusting mechanism portion 42 is switched to the second position D, and the protruding portion 48 escapes from the voltage detection wire 36. To lose tension. As a result, the voltage detection wire 36 has a surplus length, so that breakage of the voltage detection wire 36 due to constant tension can be avoided, the rotation of the voltage detection terminal 34, and the thermal expansion of the battery 2 itself. It can flexibly cope with temperature changes in the battery pack.

  In addition, the battery wiring module 30 according to the present embodiment includes an outer lid 56 that covers the upper surface of the case 32, and the outer lid 56 has an operation hole portion 56 a through which a rotation jig that rotates the boss portion 46 passes. Is formed. As a result, the boss portion 46 is rotated in a state where the upper surface of the case 32 is covered with the outer lid 56 after the wiring operation of the voltage detection wire 36, and the protruding portion 48 of the surplus length adjusting mechanism portion 42 is moved to the second position D. You can switch to Thus, since the lid 55 and the outer lid 56 can be closed in a state where the voltage detection electric wire 36 is tensioned, the voltage detection electric wire 36 can be prevented from being bitten.

  In the battery wiring module of the present invention, the wiring operation can be easily performed by arranging the wires in a state where tension is applied to the wires, and unnecessary tension is not applied to the wires after the wiring. It is effective for the battery wiring module of the battery pack for automobiles.

DESCRIPTION OF SYMBOLS 1 Battery group 2 Battery 3 Positive electrode terminal 4 Negative electrode terminal 5 Bus bar 6 Conductive member 30 Battery wiring module 32 Case 32a Bottom surface part 32b Side surface part 32c Through-hole 32d Electric wire exit part 32e Terminal accommodating wall part 32f Groove wall part 34 Voltage detection terminal 34a Hole 36 Voltage detection wire 38 Wire receiving groove 42 Surplus length adjustment mechanism 44 Support shaft 46 Boss 48 Projection 50 Projection (locking means)
52 Concave section (locking means)
54 Knob portion 55 Lid 56 Outer lid 56a Operation hole 58 Engagement hole 60 Hinge 62 Engagement claw C First position D Second position

Claims (2)

A battery group in which a plurality of batteries are arranged; a plurality of bus bars that electrically connect positive and negative terminals of the adjacent batteries; and a conductive member provided on an upper surface of each bus bar. A case having a bottom surface portion and four side surface portions on the upper surface of the battery group, provided with a through hole in the bottom surface portion, and attached in a state in which the conductive member is inserted into the through hole;
When the case is attached to the upper surface of the battery group, a plurality of voltage detection terminals arranged on the bottom surface portion so as to be electrically connected to the conductive member in the case;
A plurality of voltage detection wires connected at one end to each of the voltage detection terminals;
A wire receiving groove formed in the case along the arrangement of the plurality of bus bars, storing the voltage detection wire and guiding the outside of the case through the wire outlet;
A lid for closing the wire receiving groove;
A battery wiring module comprising:
A support shaft portion erected in the wire receiving groove, a boss portion fitted on the support shaft portion, a protrusion portion protruding from a side surface of the boss portion, and the protrusion portion facing a predetermined direction Locking means for releasably locking the boss portion to the support shaft portion,
The locking means has a first position where the protruding portion is locked in an overhanging state so that the wiring length becomes large in a state where the voltage detection wire is wound around the outside of the protruding portion, and The battery wiring module, wherein the protruding portion is provided so as to be switchable to a second position where the protruding portion escapes from the voltage detecting wire and loses the tension of the voltage detecting wire.   The outer cover which covers the said case upper surface is further provided, The operation hole part which lets the rotation jig | tool which rotates the said boss | hub part pass is formed in the said outer cover. Battery wiring module.

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