wiring module

Abstract

Provided is a wiring module capable of suppressing stress from being applied to a flexible substrate connected to a connector. A wiring module (20) is mounted to a plurality of power storage elements (11) having electrode terminals (12), and includes a flexible substrate (21) electrically connected to the electrode terminals, a connector (26) connected to the flexible substrate, and a housing (30) that holds the flexible substrate and the connector, the housing including a housing main body fixed to the plurality of power storage elements, a connector holding portion that holds the connector, and a link portion that is elastically deformable and links the connector holding portion to the housing main body so as to be movable with respect to the housing main body. The flexible substrate includes a substrate main body fixed to the housing main body, and a surplus length portion (25) that is provided so as to extend from the substrate main body and to which the connector is connected at an end portion. The surplus length portion is elastically deformable in accordance with the elastic deformation of the link portion. The surplus length portion is always longer than the link portion, and is in a state of being slack even when the link portion is fully stretched.

Description

Technical Field

[0001] This disclosure relates to wiring modules. Background Technology

[0002] Previously, as a wiring module installed on multiple energy storage devices, a wiring module disclosed in Japanese Patent Application Publication No. 2015-156329 is known. This wiring module has voltage monitoring lines on the electrode posts of the energy storage devices, composed of flexible connecting wires such as FFC (Flexible Flat Cable) or FPC (Flexible Printed Circuit). A connector is connected to one end of the voltage monitoring line. This connector connects to a device-side connector provided in the voltage monitoring unit.

[0003] Existing technical documents

[0004] Patent Document 1: Japanese Patent Application Publication No. 2015-156329 Summary of the Invention

[0005] The problem that the invention aims to solve

[0006] The operation of mating the connector with the device-side connector is performed as follows: The energy storage element with the wiring module installed is fixed in a predetermined position, and the device-side connector is also fixed in a predetermined position. The connector is brought close to and mated with the device-side connector, and then pressed into the device-side connector. Thus, the connector and the device-side connector are mated.

[0007] In performing the above operations, a portion equivalent to the length required for the connector to approach and mate with the device-side connector, and a portion equivalent to the length required for pressing the connector into the device-side connector, are pre-set as a spare length portion on the voltage monitoring line. This spare length portion is required to follow the movement of the connector during the mating operation between the connector and the device-side connector.

[0008] However, if the structure allows the spare length to move freely, the connector may move due to vibrations, etc., and stress may be applied to the spare length. For example, the connector may move due to vibrations during the transport of the wiring module before the connector is fitted to the device-side connector, or due to vibrations from the vehicle after the connector is installed behind the vehicle after the fitting operation with the device-side connector is completed, and stress may be applied to the spare length.

[0009] Additionally, one can consider situations where external, artificial forces are directly applied to the excess length. For example, when fitting the connector to the device-side connector, if the connector is mistakenly pulled out excessively, stress may be applied to the excess length.

[0010] Solution for solving the problem

[0011] The wiring module disclosed herein is installed on a plurality of energy storage elements having electrode terminals. The wiring module includes: a flexible substrate electrically connected to the electrode terminals; a connector connected to the flexible substrate; and a housing holding the flexible substrate and the connector. The housing includes: a housing body fixed to the plurality of energy storage elements; a connector holding portion holding the connector; and a connecting portion that is telescopically movable, connecting the connector holding portion to the housing body relative to the housing body. The flexible substrate includes: a substrate body fixed to the housing body; and an excess length portion extending from the substrate body, with the connector connected to its end. The excess length portion can follow the telescopic movement of the connecting portion, and the excess length portion is always longer than the connecting portion. Even when the connecting portion is fully extended, the excess length portion is in a relaxed state.

[0012] Invention Effects

[0013] According to this disclosure, a wiring module is provided that can suppress stress applied to a flexible substrate connected to a connector. Attached Figure Description

[0014] Figure 1 This is a top view showing a portion of the energy storage module according to Embodiment 1.

[0015] Figure 2 This is an enlarged top view of the energy storage module with the connector retainer locked in place by the housing body.

[0016] Figure 3 This is an enlarged top view of the energy storage module with the connecting parts fully extended.

[0017] Figure 4 yes Figure 2 AA section view in the image.

[0018] Figure 5 yes Figure 2 BB section view in the middle.

[0019] Figure 6 yes Figure 2 CC section view in the image.

[0020] Figure 7 yes Figure 2 DD section view in the image.

[0021] Figure 8 yes Figure 2 EE section view in the image.

[0022] Figure 9 yes Figure 3 FF section view in the image.

[0023] Figure 10This is a schematic top view showing the mating between the connector and the device-side connector. Detailed Implementation

[0024] [Description of embodiments of this disclosure]

[0025] First, the implementation plan disclosed herein will be listed for illustration.

[0026] (1) The wiring module of this disclosure is installed on a plurality of energy storage elements having electrode terminals. The wiring module includes: a flexible substrate electrically connected to the electrode terminals; a connector connected to the flexible substrate; and a housing holding the flexible substrate and the connector. The housing includes: a housing body fixed to the plurality of energy storage elements; a connector holding portion holding the connector; and a connecting portion that is telescopically movable to connect the connector holding portion to the housing body relative to the housing body. The flexible substrate includes: a substrate body fixed to the housing body; and an excess length portion extending from the substrate body and having the connector connected to its end. The excess length portion can follow the telescopic movement of the connecting portion. The excess length portion is always longer than the connecting portion, and even when the connecting portion is fully extended, the excess length portion is in a relaxed state.

[0027] With this structure, when the connecting part is fully extended, the excess length part is in a relaxed state, so stress can be suppressed from being applied to the excess length part.

[0028] (2) Preferably, the connecting part is configured to have multiple hinges.

[0029] With this structure, the connecting parts can easily extend and retract smoothly.

[0030] (3) Preferably, the connector retaining portion has a locking portion for locking the connector to the housing body, and the housing body has a locking portion that locks to the locking portion.

[0031] With this structure, the connector can be fixed to the housing body when conveying wiring modules, etc.

[0032] (4) Preferably, the housing has a guide portion that restricts the direction in which the connector retaining portion can move with the extension and retraction of the connecting portion.

[0033] This structure facilitates connector mating operations.

[0034] (5) Preferably, the flexible substrate and the electrode terminals are electrically connected via a busbar.

[0035] This structure facilitates the electrical connection between the flexible substrate and the electrode terminals.

[0036] [Details of the embodiments disclosed herein]

[0037] The embodiments of this disclosure will now be described. This disclosure is not limited to these examples, but is intended to include all modifications within the same meaning and scope as those shown in the patent claims.

[0038] <Implementation Method 1>

[0039] Reference Figures 1 to 10 Embodiment 1 of this disclosure will be described. The power storage module 10, equipped with the wiring module 20 of this embodiment, is mounted in a vehicle, for example, as a power source for driving electric vehicles or hybrid vehicles. In the following description, the direction indicated by arrow Z is upward, the direction indicated by arrow X is forward, and the direction indicated by arrow Y is leftward. Furthermore, regarding multiple identical components, sometimes only a portion of the components are given reference numerals, and the reference numerals for other components are omitted.

[0040] [Energy Storage Components]

[0041] like Figure 1 As shown, in the energy storage module 10, a plurality of energy storage elements 11 are arranged in the front-to-back direction (the rear portions of the plurality of energy storage elements 11 are not shown). The energy storage elements 11 are rectangular in shape when viewed from above. Energy storage elements (not shown) are housed inside the energy storage elements 11. The energy storage elements 11 are not particularly limited and may be secondary batteries or capacitors. In this embodiment, the energy storage element 11 is a secondary battery.

[0042] [Electrode terminals]

[0043] like Figure 1 As shown, electrode terminals 12 are formed at both ends of the upper surface of the energy storage element 11. One side of the electrode terminal 12 is the positive terminal, and the other side is the negative terminal. In the plurality of energy storage elements 11, the electrode terminals 12 are arranged in two rows connected in the front-to-back direction, and the two rows of electrode terminals 12 are separated in the left-to-right direction. A connecting bus bar 13 (an example of a bus bar) is electrically connected to the electrode terminals 12 constituting the right-hand row. The connecting bus bar 13 or the output bus bar 14 (an example of a bus bar) is electrically connected to the electrode terminals 12 constituting the left-hand row.

[0044] [Connect busbar, output busbar]

[0045] The connecting busbar 13 and the output busbar 14 are formed by stamping a metal sheet into a predetermined shape. Any metal, such as copper, copper alloy, aluminum, or aluminum alloy, can be selected as the metal constituting the metal sheet. An electroplated layer (not shown) can also be formed on the surfaces of the connecting busbar 13 and the output busbar 14. Any metal, such as tin, nickel, or solder, can be selected as the metal constituting the electroplated layer.

[0046] like Figure 1 As shown, the connecting busbar 13 is connected to the electrode terminals 12 in a manner that spans adjacent electrode terminals 12 in the front-to-back direction. The output busbar 14 is connected to one electrode terminal 12 to output power to an external device. In this embodiment, there are two output busbars 14, connected to the electrode terminals 12 on the left side of the energy storage elements 11 located at the front and rearmost positions (in... Figure 1 (Only the output busbar 14 at the very front is shown in the diagram). The output busbar 14 and the connecting busbar 13 can be electrically connected to the electrode terminal 12 by known methods such as soldering, welding, and bolting.

[0047] like Figure 1 As shown, the connecting bus 13 is electrically connected to the flexible substrate 21 of the wiring module 20. In this embodiment, the connecting bus 13 is connected to the flexible substrate 21 via a small metal piece 15 such as nickel. The connecting bus 13 and the metal piece 15 are connected by soldering, and the flexible substrate 21 and the metal piece 15 are connected by soldering. Although not shown, the output bus 14 is also connected to the flexible substrate 21 in the same way.

[0048] [Wiring Module]

[0049] like Figure 1 As shown, a wiring module 20 is mounted on the upper surface of a plurality of energy storage elements 11. The wiring module 20 of this embodiment includes a flexible substrate 21, a connector 26 connected to the flexible substrate 21, and a housing 30 holding the flexible substrate 21 and the connector 26. The energy storage module 10 is configured to include a wiring module 20 connected to electrode terminals 12 disposed on the right side of the plurality of energy storage elements 11 (see reference). Figure 1 The wiring module (not shown) is connected to the electrode terminals 12 arranged on the left side of the plurality of energy storage elements 11, but the two have the same structure, so only the former will be described in detail in this specification.

[0050] [Flexible PCB]

[0051] like Figure 1 As shown, the flexible substrate 21 is integrally formed as an elongated strip in the front-to-back direction. The flexible substrate 21 is configured such that multiple voltage detection lines (not shown) are formed on the surface of a flexible, insulating sheet using a printed wiring technique. In this embodiment, the flexible substrate 21 is a flexible printed circuit board. Figure 7 As shown, the flexible substrate 21 includes a substrate body 22 fixed to the housing body 31 and an excess length portion 25 connected to the substrate body 22.

[0052] [Board main body]

[0053] like Figure 6 As shown, a through hole 23 is provided in the substrate body 22 for the support portion 34B of the housing body 31 to be inserted. This allows for the positioning and fixation of the flexible substrate 21 relative to the housing body 31. Figure 2 As shown, the substrate body 22 has a substrate-side connection portion 24 that protrudes to the right. The substrate-side connection portion 24 is the part that connects to the metal piece 15, and one end of a voltage detection line (not shown) is disposed thereon.

[0054] [Excess length section, connector]

[0055] like Figure 7 As shown, the excess length portion 25 is disposed at the front of the housing body 31 and is not fixed to the housing body 31. That is, the excess length portion 25 is movable relative to the housing body 31. A connector 26 for a flexible printed circuit board is connected to the front end of the excess length portion 25. A terminal (not shown) is housed inside the connector 26. This terminal is electrically connected to the other end (not shown) of the voltage detection line of the flexible substrate 21.

[0056] like Figure 10 As shown, connector 26 is connected to device-side connector 27 of an externally located ECU (Electronic Control Unit). The ECU is equipped with a microcomputer, components, etc., and has a known structure that enables the detection of voltage, current, temperature, etc. of each energy storage element 11 and the control of charging and discharging of each energy storage element 11.

[0057] [case]

[0058] The housing 30 is made of insulating synthetic resin and is plate-shaped. For example... Figure 2 As shown, the housing 30 includes: a housing body 31 fixed to a plurality of energy storage elements 11, a connector holding portion 41 for holding the connector 26, and a connecting portion 39 for connecting the housing body 31 to the connector holding portion 41.

[0059] [Main Shell]

[0060] like Figure 2 As shown, a frame-shaped busbar arrangement section 32, partially penetrating the bottom, is provided on the right side of the housing body 31. A connecting busbar 13 is arranged in the busbar arrangement section 32. A substrate holding section 33 is provided on the left side of the housing body 31, which holds the substrate body 22 of the flexible substrate 21. Figure 1 As shown, a component comprising a busbar arrangement section 32 and a substrate holding section 33 having approximately the same front-to-back dimensions as the busbar arrangement section 32 is designated as a unit 37. Although the entire assembly is not shown, the housing 30 is constructed by interconnecting multiple unit units 37 arranged in the front-to-back direction using connecting sections 38. By providing the connecting sections 38, assembly tolerances of the connecting busbar 13 relative to the electrode terminals 12 can be absorbed.

[0061] like Figure 6 As shown, the substrate holding portion 33 includes: a substrate mounting portion 34 on which a substrate body 22 is mounted; and a substrate covering portion 35 covering the substrate body 22 from above. A support portion 34B protrudes upward from the substrate mounting portion 34 for positioning the flexible substrate 21. The substrate mounting portion 34 and the substrate covering portion 35 are joined by a hinge-like connecting portion 36. Furthermore, a locking protrusion 35A is provided on the substrate covering portion 35, which engages with the locking receiving portion 34A of the substrate mounting portion 34. That is, the substrate body 22 is housed between the substrate mounting portion 34 and the substrate covering portion 35. By providing the substrate covering portion 35, exposure of the substrate body 22 to the outside is suppressed, making it less likely for external forces to be applied to the substrate body 22.

[0062] [Connection Section]

[0063] like Figure 2 and Figure 3 As shown, the unit 37 at the front end has two connecting portions 39, which extend from the front end of the substrate cover portion 35. Figure 8 and Figure 9 As shown, the connecting portion 39 is configured to have multiple hinges 40. Each hinge 40 is a groove extending in the left-right direction (vertical direction in the drawing), formed with a thin wall, and configured to be flexible. The connecting portion 39 is track-shaped, allowing it to be folded (see reference). Figure 8 ) and unfolded state (refer to) Figure 9 The connecting part 39 extends and retracts between the two. Figure 9 It extends along the front-to-back direction, but can also extend and retract in the up-down or diagonal direction. A connector retaining part 41 is provided at the end of the connecting part 39 opposite to the end that connects to the substrate cover part 35.

[0064] [Connector Retention Section]

[0065] like Figure 4 As shown, the connector retaining portion 41 retains the connector 26 by covering a portion of the outer surface of the connector 26 on the top, bottom, left, and right sides. Similar to the substrate retaining portion 33, the connector retaining portion 41 includes a connecting portion 42, a locking protrusion 43, and a locking receiving portion 44, and is assembled to the connector 26 from above and below. Figure 8As shown, a rear abutment portion 45 is provided on the upper wall of the connector retaining portion 41, abutting against the connector 26 from the rear, and a front abutment portion 46 is provided on the lower wall of the connector retaining portion 41, abutting against the connector 26 from the front. The rear abutment portion 45 and the front abutment portion 46 abut against the connector 26, preventing the connector 26 from detaching from the connector retaining portion 41 in the front-rear direction. The upper wall of the connector retaining portion 41 is connected to the connecting portion 39 at its rear end.

[0066] like Figure 8 and Figure 9 As shown, the connector retaining part 41 is connected to the housing body 31 (substrate cover part 35) via a retractable connecting part 39, thus allowing it to move freely relative to the housing body 31 in the front-back and vertical directions. Furthermore, although its range of motion is smaller compared to the front-back and vertical directions, the connector retaining part 41 can also move relative to the housing body 31 in the left-right direction. When the connecting part 39 extends or retracts, causing the connector retaining part 41 (and connector 26) to move, the excess length part 25 connected to the connector 26 can also follow.

[0067] like Figure 8 As shown, an excess length receiving portion 54 is provided on the front side of the substrate mounting portion 34 at the front end of the wiring module 20. The excess length receiving portion 54 receives the excess length portion 25 and prevents the excess length portion 25 from being exposed to the outside. The excess length receiving portion 54 is recessed downward relative to the substrate mounting portion 34. As a result, the excess length portion 25 can be folded and stored in the excess length receiving portion 54. In addition, when the connecting portion 39 is retracted, the connector holding portion 41 is arranged together with the excess length portion 25 in the excess length receiving portion 54, thereby preventing the connector 26 from protruding upward and enabling the wiring module 20 to be lowered.

[0068] Figure 3 The diagram shows the connecting portion 39 fully extended forward relative to the housing body 31. In this state, the connector 26 cannot move further forward. With the connecting portion 39 fully extended, as... Figure 9 As shown, the excess length portion 25 is in a relaxed state. That is, the excess length portion 25 is set to be longer than the maximum dimension in the front-rear direction of the connecting portion 39. Here, the maximum dimension in the front-rear direction of the connecting portion 39 refers to the dimension from the front end of the housing body 31 to the rear end face of the connector 26. Furthermore, in Figure 9 In the middle, the connecting part 39 is in a state where it extends forward relative to the housing body 31, but it is not limited to this. For example, even if the connecting part 39 extends upward or backward, the excess length part 25 is still in a relaxed state.

[0069] Therefore, even when the connecting portion 39 is fully extended, stress will not be applied to the excess length portion 25. For example, as Figure 10 As shown, when the connector 26 is engaged with the device-side connector 27, even if the connector 26 is stretched and the connecting portion 39 is fully extended, the spare length portion 25 remains relaxed, so the load is not easily applied to the spare length portion 25.

[0070] [Identified part, guiding protrusion]

[0071] like Figure 3 As shown, a sliding plate portion 47 extending rearward is provided on the rear side of the left and right center portions of the upper wall of the connector retaining portion 41. On the rear side of the sliding plate portion 47, a hole-shaped locking portion 48 extending vertically is provided. At the left and right ends of the sliding plate portion 47, which are forward of the locking portion 48, guide protrusions 49 (an example of a guide portion) protruding towards the side edges of the sliding plate portion 47 are provided. Figure 7 As shown, an operating part 50 is provided at the rear end of the sliding plate part 47, separated by a step.

[0072] [Card Fixing Section]

[0073] like Figure 3 As shown, a sliding plate receiving portion 51 for receiving the sliding plate portion 47 is provided at the front end of the left and right center portions of the substrate covering portion 35. Figure 7 As shown, a locking part 52 protruding upwards is provided in the center of the sliding plate receiving portion 51. The rear end of the locking part 52 is an upright surface. The front part of the locking part 52 is a conical surface that is located towards the lower side as it moves forward. When the sliding plate portion 47 moves backward in a sliding manner within the sliding plate receiving portion 51, the locking part 52 engages with the locked part 48. By engaging the locking part 52 with the locked part 48, the connector retaining portion 41 (or even the connector 26) can be fixed to the housing body 31 when the connecting portion 39 is retracted. Thus, the state in which the locking part 52 is engaged with the locked part 48 will be referred to as the locked state below.

[0074] [Guide recess]

[0075] like Figure 3 As shown, groove-shaped guide recesses 53 (an example of a guide portion) are provided at both the left and right ends of the front side of the sliding plate receiving portion 51. Figure 5 As shown, in the locked state, the guide recess 53 abuts against the guide protrusion 49.

[0076] like Figure 7As shown, the operating portions 50 of the sliding plate portion 47 are spaced apart and positioned above the substrate cover portion 35. Therefore, in the locked state, by pulling the operating portions 50 upwards while moving the sliding plate portion 47 forward, the locking portion 52 is released from the locking portion 48. Figure 5 As shown, in the locked state, the guide protrusion 49 and the guide recess 53 slide in contact, so that when the sliding plate portion 47 slides forward, the direction in which the connector retaining portion 41 can move relative to the housing body 31 is generally limited to the front-back direction. Therefore, it is easy to release the locking portion 52 from the locked portion 48 and connect the connector 26 to the device-side connector 27 (see reference). Figure 10 ).

[0077] like Figure 3 As shown, in this embodiment, the connecting portion 39 and the sliding plate portion 47 are disposed above the excess length portion 25, thus suppressing the excess length portion 25 from being exposed to the outside. In addition, by disposing components such as the connecting portion 39, the locking portion 48, the locking portion 52, the guide protrusion 49, and the guide recess 53 above the flexible substrate 21, the wiring module 20 can be miniaturized in the left-right direction.

[0078] [Effects of Implementation Method 1]

[0079] According to this implementation method, the following functions and effects are achieved.

[0080] The wiring module 20 of this embodiment is installed on a plurality of energy storage elements 11 having electrode terminals 12. The wiring module 20 includes: a flexible substrate 21 electrically connected to the electrode terminals 12; a connector 26 connected to the flexible substrate 21; and a housing 30 holding the flexible substrate 21 and the connector 26. The housing 30 includes: a housing body 31 fixed to the plurality of energy storage elements 11; a connector holding portion 41 holding the connector 26; and a connecting portion 39 that is telescopic, allowing the connector holding portion 41 to be movably connected to the housing body 31 relative to the housing body 31. The flexible substrate 21 includes: a substrate body 22 fixed to the housing body 31; and an excess length portion 25 extending from the substrate body 22, with the connector 26 connected to its end. The excess length portion 25 can follow the telescopic movement of the connecting portion 39, and the excess length portion 25 is always longer than the connecting portion 39. Even when the connecting portion 39 is fully extended, the excess length portion 25 is in a relaxed state.

[0081] According to the above structure, when the connecting part 39 is fully extended, the excess length part 25 is in a relaxed state, so it is possible to suppress the stress applied to the excess length part 25.

[0082] In this embodiment, the connecting portion 39 is configured to have a plurality of hinges 40.

[0083] According to the above structure, the connecting part 39 can easily and smoothly extend and retract.

[0084] In this embodiment, the connector retaining part 41 has a locking part 48 for locking the connector 26 to the housing body 31, and the housing body 31 has a locking part 52 that is locked to the locking part 48.

[0085] According to the above structure, the connector 26 can be fixed to the housing body 31 when the wiring module 20 is being transported.

[0086] In this embodiment, the housing 30 has a guide protrusion 49 and a guide recess 53, which restrict the direction in which the connector holding portion 41 can move with the extension and retraction of the connecting portion 39.

[0087] Based on the above structure, it is easy to perform the fitting operation of connector 26.

[0088] In this embodiment, the flexible substrate 21 and the electrode terminal 12 are electrically connected via the connecting busbar 13 or the output busbar 14.

[0089] According to the above structure, it is easy to make electrical connections between the flexible substrate 21 and the electrode terminal 12.

[0090] <Other Implementation Methods>

[0091] (1) In the above embodiments, the flexible substrate 21 is a flexible printed substrate, but it is not limited to this. The flexible substrate can also be a flexible flat cable.

[0092] (2) In the above embodiment, the housing 30 has a guide protrusion 49 and a guide recess 53 as a guide portion, but it is not limited to this and may also be configured without a guide portion.

[0093] Explanation of reference numerals in the attached figures

[0094] 10: Energy Storage Module

[0095] 11: Energy storage components

[0096] 12: Electrode terminals

[0097] 13: Connect the busbar

[0098] 14: Output busbar

[0099] 15: Small metal pieces

[0100] 20: Wiring Module

[0101] 21: Flexible substrate

[0102] 22: Substrate body

[0103] 23: Through hole

[0104] 24: Substrate-side connection portion

[0105] 25: Excess Length Section

[0106] 26: Connector

[0107] 27: Equipment-side connector

[0108] 30: Shell

[0109] 31: Main body of the shell

[0110] 32: Busbar Configuration Department

[0111] 33: Substrate holding section

[0112] 34: Substrate mounting part

[0113] 34A: Carding Receiving Unit

[0114] 34B: Support column

[0115] 35: Substrate covering portion

[0116] 35A: Locking protrusion

[0117] 36: Joint

[0118] 37: Unit

[0119] 38: Linkage Department

[0120] 39: Connecting Part

[0121] 40: Hinges

[0122] 41: Connector Retention Section

[0123] 42: Joint

[0124] 43: Fixed protrusion

[0125] 44: Card receiving department

[0126] 45: Rear connection section

[0127] 46: Forward contact section

[0128] 47: Sliding plate section

[0129] 48: Fixed part

[0130] 49: Guide convex part

[0131] 50: Operations Department

[0132] 51: Sliding plate housing section

[0133] 52: Carding section

[0134] 53: Guide recess

[0135] 54: Surplus length section containment section.

Claims

1. A wiring module, installed on multiple energy storage elements having electrode terminals, The wiring module includes: A flexible substrate is electrically connected to the electrode terminals; Connector, connected to the flexible substrate; and The housing holds the flexible substrate and the connector. The housing includes: The housing body is fixed to the plurality of energy storage elements arranged in a first direction; Connector retainer, for retaining the connector; and The connecting portion is telescopic, allowing the connector retaining portion to be movably connected to the housing body relative to the housing body. The connecting portion is configured to have multiple hinges, each hinge being a slot extending along a second direction orthogonal to the first direction and arranged at intervals along the first direction. The flexible substrate comprises: The substrate body is fixed to the housing body; and An excess length portion is provided extending from the substrate body, and the connector is connected to its end. The excess length portion can follow the extension and retraction of the connecting portion. The excess length is always longer than the connecting part, and even when the connecting part is fully extended, the excess length is in a relaxed state. The connecting portion is located above the excess length portion, and in the retracted state of the connecting portion, the connector retaining portion is disposed together with the excess length portion in the excess length portion receiving portion, and the excess length portion receiving portion has a shape that is recessed downward relative to the substrate mounting portion on which the substrate body is mounted.

2. The wiring module according to claim 1, wherein, The connector retaining portion includes a locking portion for locking the connector to the housing body. The housing body has a locking part that locks into the locking part.

3. The wiring module according to claim 1 or 2, wherein, The housing has a guide portion that restricts the direction in which the connector retaining portion can move as the connecting portion extends or retracts.

4. The wiring module according to claim 1 or 2, wherein, The flexible substrate and the electrode terminals are electrically connected via a busbar.

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