Wiring module

Abstract

A wiring module 20 is to be coupled to a power storage device assembly having power storage devices 11 arranged thereon. The wiring module 20 includes a connector 48, electrical wires 45 extending from the connector 48, and a protector 50 having insulating properties that is to be attached to the power storage device assembly. The electrical wires 45 include an extended length portion 145. The extended length portion 145 includes an extended end portion 145A located near the connector 48, a base portion 145B positioned on the protector 50, and a body portion 145C located between the extended end portion 145A and the base portion 145B.The protector 50 includes an extended length portion housing portion 57 in which the body portion 145C is disposed so as to be movable therefrom, and a retaining portion 58 which releasably retains the extended end portion 145A or the connector 48.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to a wiring module. TECHNICAL BACKGROUND

[0002] A power storage module comprising a high-pressure power storage array (a battery stack element) is installed in an electric car or a hybrid car. The power storage array contained in such a power storage module comprises power storage components that are stacked and electrically connected in series or parallel. A wiring module comprising electrical wires for detecting a voltage and temperature of each power storage component is attached to the power storage array.

[0003] For example, the wiring module includes a protector with insulating properties attached to the power storage group, electric wires held by the protector, and a connector that holds end portions of the electric wires together and is connected to a target connector of an external device, as disclosed in Patent Document 1. The electric wires held by the connector have excess length portions that are not held by the protector, so that they can protrude or extend outward from the protector.

[0004] As described in Patent Document 1, the protector has a connector holding portion that temporarily holds the connector located at the ends of the excess length portions so that the connector does not contact other components when the connector is not connected to a target connector of an external device. STATE OF THE ARTPatent document

[0005] Patent Document 1: Unexamined Japanese Patent Application, Publication No. 2019-36471 DESCRIPTION OF THE INVENTION Problem to be solved by the invention

[0006] Such a wiring module does not take into account that the contact between the extension length portions connected to the connector and other components is reduced when the connector is not connected to the target connector. The length of the extension length portion is determined accordingly depending on the use of the energy storage module. Therefore, the extension length portion sometimes becomes longer and may come into contact with other external components (for example, a fixture used during assembly) when the energy storage module is mounted or just before the energy storage module is connected to the external device. If the extension length portion comes into contact with another component and a force is applied to it (for example, when it is pulled), a connecting portion of the connector and the extension length portion may break. Means to solve the problem

[0007] A wiring module according to the present disclosure is to be coupled to a power storage device assembly having power storage devices arranged thereon. The wiring module includes a connector, electrical wires extending from the connector, and a protector with insulating properties that holds the electrical wires and is to be attached to the power storage device assembly. The electrical wires include an extended length portion that bundles the electrical wires and can be moved out of the protector together with the connector. The extended length portion includes an extended end portion located near the connector, a base portion positioned on the protector, and a body portion located between the extended end portion and the base portion.The protector includes an additional length portion housing portion in which the body portion is disposed so as to be movable therefrom, and a retaining portion that removably holds the extending end portion or connector. Effects of the invention

[0008] According to the present disclosure, a wiring module is provided that reduces the contact of an extra length portion and an external other component with a connector that is not connected to a target connector. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a front view of a battery module according to a first embodiment. Fig. 2 is a perspective view of a front portion of a battery stack element. Fig. 3 is a perspective view of a portion of a laminated battery. Fig. 4 is an enlarged view of an extra length section housing section and a bracket section with an extra length section therein. Fig. 5 is an enlarged view of the extra length section housing section and the bracket section without the extra length section. Fig. 6 is an enlarged perspective view of the extra length section housing section and the bracket section with the extra length section therein. Fig. 7 is an enlarged view of an extra length portion housing portion and a support portion with two extra length portions therein in a protector of a wiring module according to a second embodiment. Fig. Figure 8 is an enlarged view of the extra length section housing section and the bracket section without the two extra length sections. Fig. 9 is an enlarged perspective view of the extension section housing section and the bracket section with the two extension sections therein. MODES FOR CARRYING OUT THE INVENTION [Description of the Embodiments According to the Present Disclosure]

[0009] First, embodiments according to the present disclosure are listed and described. (1) A wiring module according to the present disclosure is to be coupled to a power storage component group having power storage components arranged thereon. The wiring module includes a connector, electrical wires extending from the connector, and a protector with insulating properties that holds the electrical wires and is to be attached to the power storage component group. The electrical wires include an extra-length portion that includes the electrical wires gathered in a bundle and that can be moved out of the protector together with the connector. The extra-length portion includes an extending end portion disposed near the connector, a base portion positioned on the protector, and a body portion located between the extending end portion and the base portion.The protector includes an extended length portion housing portion in which the body portion is disposed so as to be movable therefrom, and a retaining portion removably holding the extended end portion or connector.

[0010] According to such a configuration, the extra-length portion can be removably disposed in the extra-length portion housing portion, and the extending end portion of the extra-length portion can extend outward from the protector together with the connector or the connector held in the holding portion to be removed therefrom. In the wiring module having such a configuration, when the connector is not connected to a target connector, the connector is disposed adjacent to the protector, and the extra-length portion is disposed in and surrounded by the extra-length portion housing portion. Therefore, the connector and the body portion are less likely to come into contact with external components.

[0011] (2) The additional length portion housing portion preferably includes a bottom portion disposed near the power storage device group, a wall portion extending outward from the bottom portion, and an orientation adjusting portion extending from at least one of the bottom portion and the wall portion and being in contact with the body portion and adjusting an orientation of the body portion.

[0012] According to such a configuration, the body portion of the additional length portion contacts the orientation adjustment portion, and the body portion can be fitted into the additional length portion housing portion by bending it. For example, when the body portion of the additional length portion has a long length, the additional length portion can be arranged in the additional length portion housing portion by using the orientation adjustment portion in the additional length portion housing portion.

[0013] (3) The support portion preferably detachably holds the extending end portion, and the protector preferably has a connector housing portion having a depressed shape opening outward from the power storage device group side and in which the connector is detachably disposed.

[0014] According to such a configuration, where the support portion holds the extending end portion of the additional length portion, the connector is arranged in the connector housing portion and surrounded by the connector housing portion, so the connector is less likely to come into contact with external components. Furthermore, with such a configuration, the connector is less likely to move excessively due to vibration. Therefore, the extending end portion of the additional length portion is less likely to be disengaged from the support portion due to the movement of the connector. [Details of Embodiments According to the Present Disclosure]

[0015] Embodiments according to the present disclosure are described. The present disclosure is not limited to the embodiments. All modifications within the technical scope of the claimed invention and equivalent thereto may be included within the technical scope of the present invention. <Erste Ausführungsform>

[0016] A first embodiment of the present disclosure will be described with reference to the Fig. 1 to 6. A battery module 10 including a wiring module 20 according to this embodiment is installed in a vehicle as a power source for driving a vehicle, such as an electric car or a hybrid car. In the following description, components having the same configuration may be designated by reference numerals, while other components may not. In this description, it is assumed that an X arrow, a Y arrow, and a Z arrow point to the front, the left side, and the top, respectively. [Battery module]

[0017] As in the Fig. 1 and Fig. As shown in FIG. 2, the battery module 10 includes a battery stack member 11L and the wiring module 20 attached to the battery stack member 11L. The battery module 10 of this embodiment further includes a shell 15 covering the battery stack member 11L from four sides, namely, the upper, lower, right, and left sides. The shell 15 has a rectangular tubular shape with a substantially rectangular parallelepiped as a whole. The shell 15 includes a bottom portion 15A located on a lower surface side of the battery stack member 11L, a ceiling portion 15B located on an upper surface side of the battery stack member 11L, and a pair of side portions 15C having a plate shape and connecting the bottom portion 15A and the ceiling portion 15B on the right and left sides. [Battery stack element]

[0018] As in Fig. 2, the battery stack element 11L comprises laminated batteries 11 (power storage components) (eighteen laminated batteries in this embodiment) stacked in a direction from left to right. Fig. 2, only a front portion of the battery stack element 11L is shown. As in Fig. 3, the laminated battery 11 has a flat shape elongated in the front-to-back direction. The laminated batteries 11 are arranged so that a direction of their thickness corresponds to the right-to-left direction. The laminated batteries 11 include energy storage elements (not shown). The laminated battery 11 has a pair of electrode leads 12. The electrode leads 12 are located on the front and back of the laminated battery 11, respectively, and have different polarities. The pair of electrode leads 12 with different polarities have a plate shape and protrude in opposite directions. That is, one of the pair of electrode leads 12 protrudes forward, and the other of the pair of electrode leads 12 protrudes backward.

[0019] As in Fig. 2, the battery stack element 11L has connecting portions 13. The four electrode lines 12 facing in the same direction (for example, a front side) and arranged side by side in the left-to-right direction are electrically connected at the connecting portion 13. In forming the connecting portion 13, the four electrode lines 12 are divided into two groups with respect to the left-to-right direction, and each of the two groups has two electrode lines 12. The two electrode lines 12 of each group overlap each other and are bent at right angles in the same direction. Specifically, the two overlapping electrode lines 12 of one of the two groups and the two overlapping electrode lines 12 of the other of the two groups are bent at a right angle so that their distal end portions overlap.The overlapping portions are connected by laser welding, and thus the distal end portions of the four electrode leads 12 are overlapped and connected to each other and configured as a connecting portion 13.

[0020] In this description, the electrode lines 12 configured as connecting portions 13 can be defined as terminal electrode lines 12A. Of the four terminal electrode lines 12A configured as connecting portion 13, the two terminal electrode lines 12A located on the right side and belonging to one of the two groups and the two terminal electrode lines 12A located on the left side and belonging to the other of the two groups have opposite polarities. For example, the two terminal electrode lines 12A on the right side have a positive polarity, and the two terminal electrode lines 12A on the left side have a negative polarity. In the battery stack element 11L, a plurality of sets, each comprising two laminated batteries 11 connected in parallel, are connected in series via the connecting portion 13. As shown in Fig. 2, the battery stack member 11L has four connecting portions 13 at a front portion. The battery stack member 11L has four connecting portions 13 (not shown) at a rear portion.

[0021] As in Fig. 1, the battery stack element 11L has an output portion 14 at a left edge portion (a right edge portion in Fig. 1) of a front portion. The battery stack element 11L also has the output portion 14 at a right edge portion of the front portion, although not shown. Among the electrode lines 12 facing the same direction (for example, toward the front), the two adjacent electrode lines 12 that are not configured as the connecting portion 13 overlap and are connected and configured as the output portion 14. In this description, the electrode lines 12 configured as the output portion 14 may be defined as output electrode lines 12B. The two output electrode lines 12B configured as the output portion 14 have the same polarity. The output portion 14 is configured as a positive polarity or a negative polarity of the entire battery stack element 11L.For example, if the output portion 14 on the front portion has a positive polarity of the entire battery stack element 11L, the output portion 14 on the rear portion (not shown) has a negative polarity of the entire battery stack element 11L. [Wiring module]

[0022] The wiring modules 20 are attached to the front portion and the rear portion of the battery stack element 11L (a power storage component group). Fig. The wiring module 20 shown in FIG. 1 is to be mounted on the front portion of the battery stack member 11L. Such a wiring module 20 includes a connector 48, electrical wires 45, and a protector 50. In this embodiment, the wiring module 20 further includes terminals 30 connected to the terminal electrode lines 12A and a bus bar 40 connected to the output electrode lines 12B. A configuration of the wiring module 20 to be mounted on the front portion of the battery module 10 will be described in detail below. The wiring module (not shown) to be mounted on the rear portion of the battery module 10 has a similar configuration to the wiring module 20 to be mounted on the front portion and will not be described in detail. [Connector]

[0023] The connector 48 includes a housing 48A made of synthetic resin having insulating properties, in which plug terminals (not shown) are arranged. The housing 48A is configured as the outer shape of the connector 48 and has a substantially rectangular cuboid. The plug terminals arranged in the housing 48A are exposed on one end side of the housing 48A. The connector 48 is detachably attached to an external target connector having female terminals. The connector 48 is attached so that it can be attached to the target connector and can be detached (removed) from the target connector by loosening the connection. The electrical wires 45, which will be described later, extend from the connector 48 to the left.

[0024] The target connector is connected to an electrical wire (not shown) and connected to an external ECU (electronic control unit) via the electrical wire. The ECU has a known configuration including a microcomputer and various types of components, and functions to detect a voltage, current, and temperature of each laminated battery 11, and to control the charging and discharging of each laminated battery 11. [Electrical wire]

[0025] As in Fig. As shown in Figure 1, the wiring module 20 includes the electrical wires 45. Each of the electrical wires 45 is used to detect a voltage of each laminated battery 11 and has flexibility and an elongated shape. The electrical wire 45 includes a core wire with electrically conductive properties and a linear shape, and an insulating sheath covering the core wire. One end portions 45a of the electrical wires 45 are gathered into a bundle and connected to the connector 48. One end portions 45a of the electrical wires 45 are held by the housing 48A and are electrically connected to the plug terminals arranged in the housing 48A. Other end portions 45b of the electrical wires 45 are connected to the terminals 30, respectively.

[0026] The terminal 30 is formed by machining an electrically conductive metal plate. The terminal 30, which is connected to the other end portion 45b of the electric wire 45, is connected to the terminal electrode line 12A. Each terminal 30 corresponds to each of the other end portions 45b of the electric wires 45. Namely, the wiring module 20 has a plurality of terminals 30. [Excessive section]

[0027] The electrical wires 45 include an additional length portion 145 comprising end portions of the electrical wires 45 extending from the one end portion 45a side (one end portion) to the other end portion 45b side (other end portions). The end portions of the electrical wires 45 are gathered into a bundle and configured as an additional length portion 145. The additional length portion 145 may extend outward from the protector 50, being connected to the connector 48.

[0028] The additional length portion 145 includes an extending end portion 145A located on the side of the connector 48, a base portion 145B positioned on the protector 50, and a body portion 145C located between the extending end portion 145A and the base portion 145B.

[0029] Portions of the electric wires 45 extending from the additional length portion 145 side toward the end portions 45b of the electric wires 45 (portions of the electric wires 45 extending from the other end portion 45b side toward the one end portion 45a side) are held by the protector 50, being branched.

[0030] The electric wires 45 of this embodiment are used as voltage detection wires to detect voltages of the laminated batteries 11.

[0031] The busbar 40 has a plate shape and is manufactured from a metal plate with electrically conductive properties. As shown in Fig. As shown in FIG. 1, the bus bar 40 includes a first portion 40A, i.e., a flat plate extending in a top-down direction, and a second portion 40B, i.e., a flat plate extending rightward from an upper end portion of the first portion 40A. The bus bar 40 is held in a bus bar holding portion 53 of the protector 50. A middle portion of the first portion 40A of the bus bar 40 in the top-down direction is connected to the output electrode line 12B. A bus bar side connection portion 41 is located at a right end portion of the second portion 40B.

[0032] The busbar-side connecting portion 41 has a plate shape and an insertion hole (not shown) through which a bolt is inserted. The insertion hole is located at the center of the thickness of the busbar-side connecting portion 41. An external connection terminal (not shown) is arranged on the busbar-side connecting portion 41 and serves to connect the battery module 10 to an external device. The busbar-side connecting portion 41 and the external connection terminal, which overlap each other, are fastened together with the bolt, and the busbar-side connecting portion 41 and the external connection terminal are electrically connected. [Protector]

[0033] The protector 50 holds the electric wires 45 and is an insulating plate member attached to the front portion of the battery stack member 11L. The protector 50 is a molded product made of, for example, synthetic resin. The protector 50 has a substantially rectangular shape elongated in the left-to-right direction when viewed in the front-to-rear direction. The protector 50 includes a protector body 51 positioned with respect to the battery stack member 11L.

[0034] The protector body 51 is a plate-like portion with a rectangular shape elongated in the left-to-right direction as viewed from the front to the back. The protector body 51 includes electrode housing portions 52, the previously described busbar holding portion 53, branch guide portions 55, a collective guide portion 56, an overlength portion housing portion 57, a support portion 58, and a connector housing portion 59.

[0035] In the protector body 51, the electrode housing sections 52 are arranged in a row along the left-to-right direction. The electrode housing section 52 is a frame section surrounding a rectangular opening section extending through the protector body 51 in the thickness direction (the front-to-back direction). The opening section has an elongated shape extending in the top-to-bottom direction. The protector body 51 has five electrode housing sections 52. Of the electrode housing sections 52, the four electrode housing sections 52 arranged from the right side to the left side (from the left side to the right side in Fig. 1) are arranged consecutively, terminal electrode housing sections 52A. The terminal electrode housing section 52A accommodates and surrounds the connecting section 13 and the terminal electrode leads 12A, wherein the connecting section 13 and the terminal electrode leads 12A are exposed through the opening sections. One of the electrode housing sections 52, which is located at the left end (in Fig. 1 (the right end) is an output electrode housing portion 52B which accommodates and surrounds the output electrode line 12B and the output portion 14, with the output electrode line 12B and the output portion 14 being exposed through the opening portion.

[0036] The five electrode housing sections 52, including the four terminal electrode housing sections 52A and the output electrode housing section 52B, are arranged at intervals in a row along the left-to-right direction. The branch guide sections 55 are arranged between the adjacent electrode housing sections 52.

[0037] As in Fig. As shown in Figure 1, the four branch guide portions 55 extend in the top-down direction in the protector body 51. The branch guide portions 55 are grooves recessed from the front to the back and extending in the top-down direction. The portion of the corresponding electric wire 45 on the end portion 45b side is arranged in and held by the branch guide portion 55.

[0038] The collective guide portion 56 is located on the upper surface of the electrode housing portions 52 and is a groove extending generally in the left-to-right direction. The collective guide portion 56 is connected to and merges with the upper end portions of the branch guide portions 55. The electric wires 45 separately arranged in the respective branch guide portions 55 are collected and arranged in the collective guide portion 56. Thus, the portions of the electric wires 45 extending from the additional length portion 145 side to the end portions 45b of the electric wires 45 are arranged in and held by the collective guide portion 56 and the branch guide portions 55.

[0039] The electric wires 45, which are collectively arranged in the collective guide portion 56, extend through an opening 56B in a bottom portion 56A of the collective guide portion 56 to the extra length portion housing portion 57. The electric wires 45 are collected in a bundle in the extra length portion housing portion 57, which will be described later. [Additional length section housing section]

[0040] The additional length section housing section 57 is located above a right portion of the collective guide section 56. The body section 145C of the additional length section 145 is arranged in the additional length section housing section 57 so that it can be removed therefrom. The additional length section housing section 57 has a container shape that extends in the left-to-right direction and opens forward as a whole. As shown in Fig. 5, the additional length portion housing portion 57 includes a bottom portion 57A having a plate shape and disposed on the battery stack member 11L (the power storage device group) side, a wall portion 57B having a plate shape and extending outward (forward) from the bottom portion 57A, a first orientation adjusting portion 57C1 extending upright from the bottom portion 57A, and a second orientation adjusting portion 57C2 extending upright from the wall portion 57B. In this specification, the first orientation adjusting portion 57C1 and the second orientation adjusting portion 57C2 may be defined as an orientation adjusting portion 57C.

[0041] The bottom portion 57A has a substantially rectangular shape elongated in the left-to-right direction as viewed from the front. The bottom portion 57A has a front surface 57A1 facing the front side and a rear surface that is an opposite surface (facing a rear side) to the front surface 57A1. An entry portion 57A3 is located in an end portion of the bottom portion 57A with respect to the left-to-right direction so as to surround a hole that is continuous in the thickness direction (the front-to-rear direction). The electric wires 45 of the additional length portion 145 are inserted through the hole surrounded by the entry portion 57A3 in the front-to-rear direction.As described above, the electric wires 45 extending through the opening 56B of the collective guide portion 56 are inserted into the entry portion 57A3, being gathered into a bundle (namely, in the form of the excess length portion). The base portion 145B of the extra-length portion 145 inserted into the entry portion 57A3 is in contact with a peripheral edge of the entry portion 57A3 and is positioned. This means that the base portion 145B of the extra-length portion 145 is positioned on the protector 50 side.

[0042] The wall portion 57B extends upright from a peripheral edge of the bottom portion 57A and a portion of a peripheral edge of the entrance portion 57A3. The wall portions 57B are plate elements with a certain thickness. As shown in Fig. 6, the wall portions 57B are arranged to surround the additional length portion 145 (the body portion 145C) located in the additional length portion housing portion 57. [Orientation Adjustment Section]

[0043] The first orientation adjustment portion 57C1 is a piece of plate extending from the bottom portion 57A. Since the additional length portion 145 has a long dimension, the additional length portion 145 can be wrapped around the first orientation adjustment portion 57C1 to be inserted into the additional length portion housing portion 57.

[0044] The second orientation adjusting portion 57C2 extends upright from the wall portion 57B, spaced from the entrance portion 57A3 in the front-to-rear direction, and covers the entrance portion 57A3. The second orientation adjusting portion 57C2 contacts the body portion 145C and adjusts the orientation of the body portion 145C so that the body portion 145C of the additional length portion 145, inserted through the entrance portion 57A3, is fitted into the housing portion for the additional length portion housing portion 57 while being bent. Specifically, this means that the body portion 145C of the additional length portion 145 inserted through the entry portion 57A3 comes into contact with an end portion of the second orientation adjusting portion 57C2, thereby changing the guiding direction in which the body portion 145C extends. [Bracket section]

[0045] The support portion 58 is adjacent to the extended length portion housing portion 57 and detachably supports the extended end portion 145A of the extended length portion 145. The support portion 58 includes a support portion 58A and a holding portion 58B. The support portion 58A extends outward (frontward) from the battery stack member 11L (power storage device group) side and has a recessed portion 58A1 at its projecting end. The extended end portion 145A is disposed on the recessed portion 58A1. The holding portion 58B holds the bundle of electric wires 45 of the extended end portion 145A disposed on the recessed portion 58A1 of the support portion 58A. The recessed portion 58A1 extends in the right-to-left direction to connect the space in the additional length portion housing portion 57 and the space in the connector housing portion 59.The recessed portion 58A1 can accommodate the extending end portion 145A extending in the right-to-left direction. The holding portion 58B includes a pair of plate pieces 58B1. The plate pieces 58B1 are provided on the support portion 58A so that there is a gap between them with respect to the top-down direction, and the extending end portion 145A disposed on the recessed portion 58A1 is located between them with respect to the top-down direction. When the extending end portion 145A is inserted between the pair of plate pieces 58B1, the plate pieces 58B1 are elastically deformed to increase the distance therebetween. Because the extra length portion 145 is disposed within the extra length portion housing portion 57 and held by the support portion 58, the extra length portion 145 is less likely to move upward or forward from the protector 50. [Connector housing section]

[0046] The connector housing portion 59 has a recessed shape opening outward from the side of the battery stack member 11L, and the connector 48 is removably disposed in the connector housing portion 59. The connector housing portion 59 is adjacent to the support portion 58. The support portion 58, which supports the extending end portion 145A of the additional length portion 145, is disposed between the connector housing portion 59 and the additional length portion housing portion 57. Since the support portion 58 holds the extending end portion 145A of the additional length portion 145 and the connector 48 is disposed in the connector housing portion 59, the connector 48 is less likely to move outward (forward) from the side of the battery stack member 11L. [Placement and removal of an additional length section in and out of the bracket section and the additional length section housing section]

[0047] The battery module 10, which includes the wiring module 20, is finally connected to an external device (such as an ECU) via the connector 48. The connector 48 is connected to a target connector of an external device located a certain distance from the wiring module 20. Therefore, the extra length portion 145 connected to the connector 48 is not held by the support portion 58 or the extra length portion housing portion 57, and is pulled out and moved from the protector 50. Therefore, when the battery module 10 is used, the extra length portion 145 can protrude outward from the protector 50 together with the connector 48.

[0048] On the other hand, at the time of assembling the battery module 10 or just before the battery module 10 is connected to an external device, the connector 48 is not connected to a target connector. Since the connector 48 is not connected to a target connector, the extending end portion 145A of the additional length portion 145 is removably held by the holder portion 58, and the body portion 145C of the additional length portion 145 is disposed in the additional length portion housing portion 57. In this embodiment, the connector 48 connected to the extending end portion 145A is disposed in the connector housing portion 59, with the extending end portion 145A held by the holder 58. Thus, the additional length portion 145 is temporarily held by the protector 50 so that it does not move out of the protector 50.When the extended length portion 145 is temporarily held by the protector 50 as described above, the extended end portion 145A may be held by the support portion 58 after the body portion 145C is disposed in the extended length portion housing portion 57. Or, the body portion 145C may be disposed in the extended length portion housing portion 57 after the extended end portion 145A is held by the support portion 58. [Functions and effects of the first embodiment]

[0049] According to the first embodiment, the functions and effects described below are achieved.

[0050] The wiring module 20 according to the first embodiment is to be coupled to the battery stack member 11L having the laminated batteries 11 arranged thereon. The wiring module 20 includes the connector 48 detachably attached to an external target connector, the electrical wires 45 extending from the connector 48, and the protector 50 with insulating properties to be attached to the battery stack member 11L. The protector 50 holds portions of the electrical wires 45 extending from the other end portion 45b side to the one end portion 45a side. The electrical wires 45 include the extra length portion 145. The portions of the electric wires 45 extending from the side of one end portion 45a to the side of the other end portion 45b are gathered into a bundle and configured as an additional length portion 145.The extended length portion 145 may protrude from the protector 50 together with the connector 48. The extended length portion 145 includes the extended end portion 145A located near the connector 48, the base portion 145B positioned on the protector 50, and the body portion 145C located between the extended end portion 145A and the base portion 145B. The protector 50 includes the extended length portion housing portion 57 and the support portion 58. The body portion 145C is disposed within the extended length portion housing portion 57 so that it can be removed therefrom. The extended end portion 145A or the connector 48 is removably retained in the support portion 58.

[0051] According to such a configuration, the body portion 145C of the extra-length portion 145 can be removably disposed in the extra-length portion housing portion 57, and the extending end portion 145A of the extra-length portion 145, which extends outward from the protector 50 together with the connector 48 or the connector 48 held in the holding portion 58 to be removed therefrom, can extend outwardly. In a wiring module 20 having such a configuration, when the connector 48 is not connected to a target connector, the connector 48 is disposed adjacent to the protector 50, and the extra-length portion 145 is disposed in and surrounded by the extra-length portion housing portion 57. Therefore, the protector 50 and the extra-length portion 145 are less likely to come into contact with external components.

[0052] The additional length portion housing portion 57 includes the bottom portion 57A disposed on the battery stack member 11L side, the wall portion 57B extending outward from the bottom portion 57A, and the orientation adjusting portion 57C extending from at least one of the bottom portion 57A and the wall portion 57B. The orientation adjusting portion 57C contacts the body portion 145C and adjusts the orientation of the body portion 145C so that the body portion 145C is bent.

[0053] According to such a configuration, the body portion 145C of the extra-length portion 145 contacts the orientation adjustment portion 57C, and the body portion 145C can be inserted into the extra-length portion housing portion 57 while being bent. For example, when the body portion 145C of the extra-length portion 145 has a long length, the extra-length portion 145 can be arranged in the extra-length portion housing portion 57, and the body portion 145C is bent using the orientation adjustment portion 57C.

[0054] The support portion 58 holds the extending end portion 145A so that the extending end portion 145A can be removed therefrom. The protector 50 includes the connector housing portion 59, which has a recess opening outward from the side of the battery stack member 11L. The connector 48 is disposed in the connector housing portion 59 so that it can be removed therefrom.

[0055] According to such a configuration, the connector 48 is less likely to come into contact with external components because the connector 48 is surrounded by the connector housing portion 59. Furthermore, according to such a configuration, the connector 48 is less likely to move excessively due to vibration. Therefore, the extending end portion 145A of the additional length portion 145 is less likely to be disengaged from the support portion 58 due to the movement of the connector 48. <Zweite Ausführungsform>

[0056] A second embodiment of the present disclosure will be described with reference to the Fig. 7 to 9. The components having the same configuration as those of the first embodiment are indicated by the reference numerals of the first embodiment and may not be described. Operations and effects that are the same as those of the first embodiment will not be described. As shown in Fig.As shown in Figure 7, a battery module 110 according to the second embodiment includes a wiring module 120 having a protector 150. The protector 150 includes an extended-length portion housing portion 157 in which two extended-length portions 245, 345 are arranged, as well as two support portions 258, 358 that support the extending end portions 245A, 345A of the extended-length portions 245, 345, respectively. The electrical wires 45 of one extended-length portion 245 are used to detect voltages of the laminated batteries (the power storage components), similar to the first embodiment. Electrical wires 45A of the other extended-length portion 345 are connected to a thermistor to detect temperatures of the laminated batteries (the power storage components).

[0057] The extended length portion housing portion 157 includes a bottom portion 157A and a wall portion 157B. The bottom portion 157A has a plate shape and is disposed on the side of the battery stack element (the power storage device group). The wall portion 157B has a plate shape and extends outward (forward) from the bottom portion 157A. The bottom portion 157A includes two entry portions 257A3, 357A3. A base portion 245B of one extended length portion 245 is inserted into one entry portion 257A3, and a base portion 345B of the other extended length portion 345 is inserted into the other entry portion 357A3. A first orientation adjustment portion 257C1 extends upright from the bottom portion 157A and is adjacent to the one additional length portion 245. The length of the additional length portion 245 can be adjusted with the first orientation adjustment portion 257C1.A first orientation adjustment section 357C1 extends upright from the bottom section 157A and is adjacent to the other additional length section 345. The length of the additional length section 345 can be adjusted with the first orientation adjustment section 357C1. A second orientation adjustment section 257C2 extends upright from the wall section 157B near the entrance section 257A3. The length of the additional length section 245 can be adjusted with the second orientation adjustment section 257C2. A second orientation adjustment section 357C2 extends upright from the wall section 157B near the entrance section 357A3. The length of the additional length section 345 can be adjusted with the second orientation adjustment section 357C2.

[0058] The protector 150 includes the support portion 258 that supports the extending end portion 245A of the additional length portions 245, and the support portion 358 that supports the extending end portion 345A of the additional length portion 345. The support portions 258, 358 include support portions 258A, 358A and holding portions 258B, 358B, respectively. The support portions 258A, 358A include recessed portions 258A1, 358A1, respectively. The holding portion 258B includes a pair of pieces 258B1, and the holding portion 358B includes a pair of pieces 358B1. The protector 150 further includes a connector housing portion 159. A connector 248 from which the extending end portion 245A of the additional length portion 245 extends, and a connector 348 from which the extending end portion 345A of the additional length portion 345 extends are arranged in the connector housing portion 159. [Functions and effects of the second embodiment]

[0059] According to the second embodiment, the functions and effects described below are achieved.

[0060] The protector 150 includes the extended length portion housing portion 157 in which the body portions 245C, 345C of the extended length portions 245, 345 can be disposed, and the support portions 258, 358 that can hold the extending end portions 245A, 345A of the extended length portions 245, 345.

[0061] According to such a configuration, the two additional length sections 234, 345 can be arranged together in the additional length section 157, wherein the extending end sections 245A, 345A are held by the support sections 258, 358, respectively. <Andere Ausführungsformen> (1) The support portion of the first and second embodiments supports the extending end portion of the additional length portion so that the extending end portion can be removed therefrom; however, the configuration is not limited to this. In another embodiment, a protector may have a support portion that supports a connector so that it can be removed therefrom, instead of the support portion supporting the extending end portion of the additional length portion. (2) In the first and second embodiments, the support portion includes a pair of plate pieces that support the extending end portion of the additional length portion in the top-down direction; however, the configuration is not limited thereto. The support portion may have any configuration as long as it can removably support the extending end portion of the additional length portion. (3) The body portion of the additional length portion may be bent while being wound around the orientation adjusting portion, or folded while using the orientation adjusting portion to be inserted into the additional length portion housing portion. (4) The laminated batteries of the battery stack element can be electrically connected by busbars held by the protector. LIST OF REFERENCE SYMBOLS 10, 110 battery module 11 laminated battery (power storage component) 11L Battery stack element (power storage component group) 12 Electrode lead 12A connecting electrode cable 12B Output electrode lead 13 connecting section 14 Exit section 15 Formwork 15A floor section 15B Ceiling section 15C side section 20, 120 wiring module 30 connection 40 busbar 40A First Section 40B Second Section 41 Busbar side connection section 45 electrical wire 45a a final section 45b other end section 48, 248, 348 connector 48A housing 50, 150 Protector 51 protector body 52 Electrode housing recess section 52A Terminal electrode housing recess section 52B Output electrode housing recess section 53 Busbar holding section 55 branch guide section 56 Collective leadership section 57 Additional length section housing section 57A floor section 57A3, 257A3, 357A3 entry section 57B wall section 57C Orientation Adjustment Section 57C1, 257C1, 357C1 First section for adjusting the orientation 57C2, 257C2, 357C2 Second section for adjusting the orientation 58 Bracket section 59, 159 connector housing section 145, 245, 345 additional length section 145A, 245A, 345A extending end section 145B, 245B, 345B base section 145C, 245C, 345C body section

Claims

[1] Wiring module to be coupled to a power storage component group having power storage components arranged thereon, the wiring module comprising: a connector; electrical wires extending from the connector; and a protector having insulating properties and holding the electrical wires and intended to be attached to the power storage component group, wherein the electrical wires have an additional length section in which the electrical wires are bundled together and which can be moved out of the protector together with the connector, the additional length portion comprises an extending end portion disposed near the connector, a base portion positioned on the protector, and a body portion located between the extending end portion and the base portion, and the protector has an additional length section housing section in which the body section is arranged so that it can be moved out therefrom, and a holding section which releasably holds the extending end section or the connector. [2] The wiring module according to claim 1, wherein the additional length portion housing portion includes a bottom portion disposed near the power storage device group, a wall portion extending outward from the bottom portion, and an orientation adjusting portion extending from at least one of the bottom portion and the wall portion and being in contact with the body portion and adjusting an orientation of the body portion. [3] Wiring module according to claim 1 or 2, wherein the support section releasably holds the extending end section and the protector has a connector housing portion having a recessed shape opening outwardly from the side of the power storage component group and in which the connector is detachably arranged.

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