JP5974918B2 - Wiring module - Google Patents

Description

  The present invention relates to a wiring module attached to a power storage element group in which a plurality of power storage elements are arranged.

  For example, a power storage module mounted on an electric vehicle or a hybrid vehicle is generally configured by electrically connecting a number of power storage elements via a bus bar. As such a power storage module, the one described in Patent Document 1 is known. In this power storage module, the bus bar is accommodated in a resin protector made of synthetic resin. A cover made of an insulating synthetic resin is attached to the resin protector. The bus bar is covered with this cover. Thereby, it is suppressed that a foreign material contacts a bus bar and short-circuits.

  In the power storage module described in Patent Document 1, a cover lock portion that protrudes outward is formed on the side wall of the resin protector, and a cover lock receiving portion that is engaged with the cover lock portion is formed on the cover. Yes. The cover is attached to the resin protector by locking the cover lock portion and the cover lock receiving portion.

JP 2001-332235 A

  However, according to the above configuration, since the cover lock portion is formed to protrude outward from the side wall of the resin protector, there is a concern that the wiring module is increased in size. This is a problem particularly when cover lock portions are formed on both side walls of the resin protector.

  The present invention has been completed based on the above situation, and an object thereof is to provide a miniaturized wiring module.

The present invention is a wiring module attached to a power storage element group in which a plurality of power storage elements each having a pair of electrode terminals are arranged, and is attached to the power storage element group and has an opening on a side opposite to the power storage element. A resin protector, a bus bar that is accommodated in the opening of the resin protector and connects the electrode terminals of the adjacent power storage elements, and an insulating cover that covers the opening of the resin protector, and The resin protector is provided with a cover locking portion for locking the cover on the side surface where the opening is formed, and the cover is provided with a cover locking receiving portion for locking to the cover locking portion. A cover lock portion for locking the cover is provided on the outer surface of the side wall intersecting the opening direction of the opening portion of the resin protector. The cover has a cover lock receiving portion for resiliently engaging are provided on the cover locking portion, the cover locking portion includes cross a base which projects into the opening direction, and the opening direction from a distal end of said base portion And the cover locking receiving portion is a hole edge portion of a through hole formed in the cover, and the cover locking portion is inserted into the through hole. In this state, the protrusion comes into contact with the hole edge from the direction opposite to the opening direction to prevent the cover from coming off in the opening direction .

  According to the present invention, the cover is attached to the resin protector by locking the cover locking portion and the cover locking receiving portion and locking the cover lock portion and the cover lock receiving portion. Since the cover locking portion is formed at a position opposite to the power storage element in the resin protector, the cover locking portion does not protrude outward from the side wall of the resin protector. Thereby, a wiring module can be reduced in size compared with the case where the cover lock part which protrudes outward is formed in the both side walls of the resin protector.

Moreover, it can suppress that a cover remove | deviates from the opening direction of an opening part by the simple method of inserting a cover latching | locking part in a through-hole.

  The protruding portion is formed to extend away from the cover lock portion, and the cover locking portion is slid in a direction approaching the cover lock portion after being inserted into the through hole. Thus, it is preferable to lock the cover locking receiving portion.

  According to said aspect, a cover latching | locking part latches to a cover latching receiving part from the direction approaching a cover lock part. Thereby, it can suppress that a cover moves to the direction from which the latching structure of a cover lock part and a cover lock receiving part remove | deviates. As a result, the cover and the resin protector can be firmly locked.

  The present invention is also a wiring module attached to a power storage element group in which a plurality of power storage elements each having a pair of electrode terminals are arranged, and is attached to the power storage element group and has an opening on a side surface opposite to the power storage element A resin protector, a bus bar that is accommodated in the opening of the resin protector and connects the electrode terminals of the adjacent power storage elements, and an insulating cover that covers the opening of the resin protector, The resin protector is provided with a cover locking portion for locking the cover on a side surface where the opening is formed, and the cover is provided with a cover locking receiving portion for locking to the cover locking portion. A cover lock portion for locking the cover is provided on the outer surface of the side wall intersecting the opening direction of the opening portion of the resin protector. The cover is provided with a cover lock receiving portion that is elastically locked to the cover lock portion, and the cover has a thickness between the cover locking receiving portion and the cover lock receiving portion. A bent portion that is bent in the vertical direction is provided.

  According to the above aspect, the cover lock portion and the cover lock receiving portion can be locked while the cover is bent at the bent portion. Thereby, workability at the time of attaching a cover to a resin protector can be improved compared with the case where it is hard to bend in the thickness direction of a cover because the cover consists of a rigid material.

  According to the present invention, the wiring module can be reduced in size.

FIG. 1 is a plan view showing a storage element group according to Embodiment 1 of the present invention. FIG. 2 is a plan view showing the power storage module. FIG. 3 is a side view showing the storage element. FIG. 4 is a plan view showing the wiring module. FIG. 5 is a cross-sectional view of the power storage module in a state before the cover is attached, cut at a position corresponding to the line VV in FIG. FIG. 6 is a cross-sectional view showing a state where the connection detection unit interferes with the connector. FIG. 7 is a plan view showing the cover. FIG. 8 is a cross-sectional view showing the power storage module. FIG. 9 is a cross-sectional view showing a process of inserting the cover locking portion through the through hole of the cover. FIG. 10 is a cross-sectional view showing a process of engaging the cover lock portion and the cover lock receiving portion.

<Embodiment 1>
Embodiment 1 of the present invention will be described with reference to FIGS. 1 to 10. The power storage module 10 according to the present embodiment is mounted on a vehicle (not shown) such as an electric vehicle or a hybrid vehicle and used as a power source for driving the vehicle.

  The power storage module 10 has a power storage element group 12 in which a plurality (ten in this embodiment) of power storage elements 11 are arranged (see FIG. 1), and a wiring module 13 is attached to the power storage element group 12 (see FIG. 1). 2). In the following description, a reference numeral may be assigned to one member for a plurality of identical members, and a reference numeral may be omitted for other members. Further, in the following description, the upper side in FIG. 3 is described as the upper side and the lower side is described as the lower side. Further, the left side in FIG. 3 is described as the left side and the right side is described as the right side.

(Storage element 11)
As shown in FIG. 1, the electricity storage element 11 has a flat, substantially rectangular parallelepiped shape. As shown in FIG. 3, a pair of electrode terminals 14 and 14 protrude from the upper surface of the electricity storage element 11. One of the pair of electrode terminals 14 and 14 is a positive electrode, and the other is a negative electrode. The pair of electrode terminals 14 and 14 have the same shape and size. Bolt holes 15 extending downward are formed on the upper surface of each electrode terminal 14. A screw thread is formed inside the bolt hole 15 so that the bolt 16 is screwed together. The plurality of power storage elements 11 are arranged such that adjacent electrode terminals 14 have different polarities. The power storage element 11 according to the present embodiment is a storage battery, and a plurality (four in the present embodiment) of single cells (not shown) are accommodated therein in an electrically connected state.

  As shown in FIGS. 1 and 3, a cylindrical hood portion 17 having an upper opening is provided between the pair of electrode terminals 14 and 14. On the outer wall of the hood portion 17, a connector lock portion 19 that is engaged with the connector 18 is formed so as to protrude.

  As shown in FIG. 1, four voltage output terminals 20 are arranged in the hood portion 17 so as to protrude into the hood portion 17. Each voltage output terminal 20 is electrically connected to each unit cell housed in the storage element 11. The voltage output terminal 20 is electrically connected to a detection terminal 21 accommodated in the connector 18.

(Wiring module 13)
As shown in FIG. 4, the wiring module 13 includes a plurality of metal bus bars 22 connected to the positive electrode terminal 14 and the negative electrode terminal 14 of the adjacent storage element 11, and a synthetic resin in which the bus bars 22 are accommodated. And a resin protector 23 made of the same.

(Bus bar 22)
The bus bar 22 is formed by pressing a plate material made of metal such as copper, copper alloy, stainless steel (SUS), aluminum, aluminum alloy or the like into a predetermined shape, and has a substantially rectangular shape as a whole. A metal such as tin or nickel may be plated on the surface of the bus bar 22. A pair of insertion holes 24 and 24 through which the bolts 16 are inserted are formed in the bus bar 22 so as to penetrate the bus bar 22. The insertion hole 24 has a substantially circular shape when viewed from above.

  As shown in FIG. 5, the inner diameter of the insertion hole 24 is set slightly larger than the inner diameter of the bolt hole 15 of the electrode terminal 14. The bolt 16 is inserted into the insertion hole 24 and screwed into the bolt hole 15 of the electrode terminal 14, and the bus bar 22 is sandwiched between the head of the bolt 16 and the electrode terminal 14. The bus bar 22 is electrically connected.

(Resin protector 23)
The resin protector 23 is formed by connecting a plurality of connecting units, and has an elongated shape in the direction in which the power storage elements 11 are arranged (the left-right direction in FIG. 4), as shown in FIG.

  In the resin protector 23, a plurality of bus bar accommodating portions 25 in which the bus bars 22 are accommodated are formed side by side along the longitudinal direction of the resin protector 23. The plurality of bus bar accommodating portions 25 are provided in two rows. An opening 26 that opens upward (in the direction opposite to the power storage element 11) is provided on the top surface (side surface opposite to the power storage element 11) of the bus bar housing portion 25. A plurality of bus bar locking claws 27 that protrude inward and prevent the bus bar 22 from being pulled upward are formed on the inner surface of the bus bar housing portion 25.

  A plurality of connector holding portions 28 are provided in the longitudinal direction of the resin protector 23 between the rows of the two bus bar accommodating portions 25. The connector 18 is held in the connector holding portion 28. The connector holding portion 28 has a shape along the outer periphery of the connector 18. An upper end portion of the connector holding portion 28 is formed with a retaining portion 29 that prevents the connector 18 held in the connector holding portion 28 from coming off upward.

  Between the connector holding part 28 and each bus bar accommodating part 25, the electric wire accommodating groove 30 is provided, respectively. In the present embodiment, the wire receiving grooves 30 are provided on the left side and the right side of the connector holding portion 28. A plurality of wires 31 are housed in the wire housing groove 30. These electric wires 31 are led out from the connector 18 held by the connector holding portion 28. At the upper end edge of the side wall of the wire housing groove 30, a wire holding portion 32 that restricts the protrusion of the wire 31 from the wire housing groove 30 is provided so as to be bridged from one side wall to the other side wall. The electric wire holding part 32 is provided between the adjacent bus bar accommodating parts 25.

(Connector 18)
The connector 18 held by the connector holding portion 28 is made of a synthetic resin and has a substantially rectangular parallelepiped shape. The connector 18 is formed with a connector lock receiving portion 33 that engages with a connector lock portion 19 formed on the hood portion 17. The connector 18 accommodates four detection terminals 21.

  As shown in FIG. 5, the connector 18 includes a tower portion 34 in which the detection terminals 21 are accommodated. A plurality of cavities 35 are formed side by side in the tower portion 34, and the detection terminals 21 are accommodated in the cavities 35. In the cavity 35, a lance 36 that is deformable to project inward is formed. The lance 36 is elastically engaged with the detection terminal 21 so that the detection terminal 21 is prevented from being detached from the cavity 35.

  A cover wall 37 is formed on the connector 18 so as to surround the outer periphery of the tower portion 34. The tower portion 34 is adapted to fit inside the hood portion 17. A gap 38 for receiving the hood portion 17 is formed between the tower portion 34 and the cover wall 37.

  The detection terminal 21 accommodated in the connector 18 is a so-called female detection terminal 21, and a barrel portion 39 to which the electric wire 31 is connected is formed at the upper end portion, and a cylindrical shape is formed at the lower end portion, and a single cell is formed. A connecting tube portion 40 that can be connected to the voltage output terminal 20 is formed.

  When the barrel portion 39 is crimped to the end of the electric wire 31, the electric wire 31 and the detection terminal 21 are electrically connected. In addition, an elastic contact piece (not shown) is formed inside the connecting tube portion 40, and the unit cell and the detection terminal 21 of the connector 18 are electrically connected by the elastic contact piece and the voltage output terminal 20 being in contact with each other. Connected.

  The detection terminal 21 detects the state of each unit cell accommodated in the electrical storage element 11, and in the present embodiment, detects the voltage of the unit cell. The electric wire 31 connected to the detection terminal 21 is led out from the upper surface of the connector 18 and connected to a control unit (not shown) such as an ECU. The electric wire 31 is routed on the side edge of the connector 18 opposite to the side edge where the connector lock receiving portion 33 is formed, and is arranged in the electric wire receiving groove 30 provided on the side opposite to the connector lock receiving portion 33. Is done.

  The connector 18 is held in the connector holding portion 28 so as to be movable in the vertical direction. Specifically, the connector 18 electrically connects the detection terminal 21 and the voltage output terminal 20 from a non-connection position (for example, the position shown in FIG. 6) that is not connected to the voltage output terminal 20 in the connector holding unit 28. It is movably held at a connection position (position shown in FIG. 5) that is connected and locked to the power storage element 11. At the non-connection position, the detection terminal 21 and the voltage output terminal 20 are in a non-contact state. At the connection position, the detection terminal 21 and the voltage output terminal 20 are in contact with each other, and the connector lock portion 19 and the connector lock receiving portion 33 are elastically locked, whereby the connector 18 is attached to the hood portion 17. It is held in a retaining state.

  As shown in FIGS. 4 and 5, among the side edges extending in the longitudinal direction of the resin protector 23, one side edge extends in the longitudinal direction of the resin protector 23 and accommodates a plurality of electric wires 31. A groove 41 is formed. The external electric wire 42 accommodated in the external electric wire accommodation groove 41 is connected to a member (not shown) different from the resin protector 23. A lid portion 43 is formed on the upper end portion of the side wall of the external wire housing groove 41 via a hinge. By closing the lid 43, the external electric wire 42 accommodated in the external electric wire accommodation groove 41 is covered from above.

(Cover 44)
As shown in FIG. 2, a cover 44 made of an insulating synthetic resin is attached to the upper side of the resin protector 23 (the side opposite to the power storage element group 12). By covering the opening 26 and the like with the cover 44, the bus bar 22, the electric wires 31, and the connector 18 are covered from above. As shown in FIG. 7, the cover 44 is formed in a thin and substantially rectangular thin plate shape. Of the pair of side edges extending in the longitudinal direction of the cover 44, one side edge is elastically locked to the cover lock portion 45 at a position corresponding to the cover lock portion 45 formed on the side wall of the resin protector 23. A cover lock receiving portion 46 is formed. As shown in FIG. 8, the cover lock portion 45 is formed to protrude outward from the outer surface of the side wall of the resin protector 23 (the side wall intersecting the opening direction of the opening 26). Further, the cover lock receiving portion 46 is formed to hang down from the side edge of the cover 44, and is locked from below with respect to the cover lock portion 45, thereby preventing the cover 44 from coming off upward. ing.

  As shown in FIG. 8, the cover 44 is formed as a bulging portion 47 bulging upward near the center in the left-right direction. A step is formed between the bulging portion 47 and the left and right end portions of the cover 44, and the bent portion 48 is bent in the plate thickness direction of the cover 44.

  As shown in FIG. 8, a through hole 49 that penetrates the cover 44 is formed in the right bent portion 48. A cover locking portion 50 provided on the upper surface of the resin protector 23 (the surface on which the opening 26 is formed) is inserted into the through hole 49. The cover locking portion 50 includes a base 51 protruding upward from the upper surface of the resin protector 23 (the opening direction of the opening 26), and a direction away from the cover lock portion 45 from the upper end of the base 51 (the opening of the opening 26). And a projecting portion 52 that projects and extends in a direction intersecting the direction). In the present embodiment, the protruding portion 52 is formed to extend in a direction orthogonal to the longitudinal direction of the resin protector 23. The hole edge portion of the through hole 49 serves as a cover engagement receiving portion 53 that engages with the cover engagement portion 50 in a state where the cover engagement portion 50 is inserted into the through hole 49.

(Connection detector 54)
As shown in FIG. 8, the cover 44 includes a connection detection unit 54 that protrudes toward the connector 18 at a position corresponding to the connector 18 in a state where the cover 44 is attached to the resin protector 23. 44 and a single unit. The connection detection unit 54 does not interfere with the connector 18 when the connector 18 is held at the connection position in the connector holding unit 28. In addition, the connection detection unit 54 interferes by contacting the connector 18 from above when the connector 18 is not held in the connection position in the connector holding unit 28. Note that the state where the connector 18 is not held at the connection position includes a state where the connector 18 is held at the non-connection position within the connector holding portion 28, and the connector 18 is within the non-connection position within the connector holding portion 28. In addition, a state where it is not held at the connection position is also included.

  As shown in FIG. 7, the connection detection unit 54 is formed in a substantially C shape when viewed from above. The connection detection unit 54 includes a long part 55 formed in a relatively long shape extending along the longitudinal direction of the cover 44, and a direction (left or right) intersecting the longitudinal direction from both ends of the long part 55. And a short portion 56 that is formed in a relatively short length. The short portion 56 prevents the long portion 55 from being bent and deformed. As shown in FIGS. 2 and 8, the long portion 55 comes into contact with the portion of the connector 18 that protrudes upward from the top.

  FIG. 8 shows a state where the connector 18 is held at the connection position in the connector holding portion 28, that is, a normal fitting state of the connector 18. In a state where the connector 18 is held at the connection position, the connection detection unit 54 does not interfere with the upper end portion of the connector 18. Thereby, the locking of the cover lock portion 45 and the cover lock receiving portion 46 is allowed, and the cover 44 can be attached to the resin protector 23.

  On the other hand, FIG. 6 shows a state where the connector 18 is not held at the connection position in the connector holding portion 28, that is, a half-fitted state of the connector 18. When the connector 18 is in a half-fitted state, the connection detection unit 54 abuts on the upper end of the connector 18 from above and interferes therewith. As a result, the cover lock portion 45 cannot move to a position corresponding to the cover lock receiving portion 46, and the locking between the cover lock portion 45 and the cover lock receiving portion 46 is not allowed. As a result, since the cover 44 cannot be attached to the resin protector 23, it can be easily detected that the connector 18 is in a half-fitted state.

(Operation and effect of this embodiment)
Then, the effect | action and effect of this embodiment are demonstrated. First, an example of the assembly process of the wiring module 13 according to the present embodiment will be described. In addition, the assembly process of the wiring module 13 is not limited to the following description.

  First, the bus bar 22 is accommodated in the bus bar accommodating portion 25 of the resin protector 23. Then, the bus bar 22 is held in the bus bar housing part 25 by the bus bar locking claw 27 in a state of being prevented from coming off.

  Next, the detection terminal 21 connected to the electric wire 31 is accommodated in the cavity 35 of the connector 18. Subsequently, the connector 18 is fitted into the connector holding portion 28 from above. When the connector 18 is fitted into the connector holding portion 28, the connector 18 is prevented from coming off upward by the retaining portion 29 of the connector holding portion 28.

  Next, the electric wire 31 led out from the connector 18 is accommodated in the electric wire accommodation groove 30. When the electric wire 31 is accommodated, the electric wire 31 is accommodated in the electric wire accommodation groove 30 formed on the side opposite to the connector lock receiving portion 33 of the connector 18 to which the electric wire 31 is connected.

  Subsequently, the plurality of power storage elements 11 are arranged so that the adjacent electrode terminals 14 have different polarities to form the power storage element group 12. Next, the wiring module 13 provided with the bus bar 22 and the connector 18 is placed on the surface of the power storage element 11 where the electrode terminal 14 is formed with the insertion hole 24 of the bus bar 22 aligned with the position of the electrode terminal 14. Then, the hood part 17 of the electricity storage element 11 is arranged in the connector holding part 28.

  Next, the battery connection bolt 16 is screwed into the screw hole of the electrode terminal 14 inserted through each bus bar 22. After all the bolts 16 are screwed together, each connector 18 is pushed downward. Before the connector 18 is pushed in, the detection terminal 21 and the voltage output terminal 20 are not in contact with each other and are not connected. When the connector 18 is pushed in, the tower portion 34 is fitted into the hood portion 17 and the hood portion 17 is received in the gap 38 between the tower portion 34 and the covering wall 37. When the connector 18 is pushed to a position where the connector lock receiving portion 33 and the connector lock portion 19 come into contact with each other, the connector lock receiving portion 33 is bent and deformed outward.

  When the connector 18 is further pushed downward, the voltage output terminals 20 at the corresponding positions are received in the connection tube portions 40 of the detection terminals 21 in the connector 18. When the connector 18 is further pushed in, the connector lock receiving portion 33 is elastically restored, and the connector 18 is locked to the hood portion 17 (unit cell). On the other hand, the connection cylinder part 40 of each detection terminal 21 of the connector 18 and the voltage output terminal 20 of the hood part 17 reach a contact state, and the electrical storage element group 12 and the voltage detection detection terminal 21 are electrically connected. .

  When the connection operation between the connector 18 and the unit cell is completed by pushing the connector 18 downward, the electric wire 31 introduced into the electric wire receiving groove 30 is pressed by the electric wire holding portion 32 and is released from the electric wire receiving groove 30. Is regulated (see FIG. 5).

  Subsequently, a cover 44 is attached to the upper surface of the wiring module 13 from above (from the side opposite to the power storage element group 12). At this time, the cover locking portion 50 is inserted into the through hole 49 (see FIG. 9). Thereafter, the cover 44 is slid leftward to approach the cover lock portion 45 (see FIG. 10). Then, the base 51 of the cover locking part 50 comes into contact with the hole edge of the through hole 49 from the left. In addition, the protruding portion 52 of the cover locking portion 50 prevents the cover 44 from moving upward from above the cover 44 (the direction opposite to the opening direction of the opening 26).

  Next, the cover lock receiving portion 46 is moved downward. When the cover lock receiving portion 46 contacts the cover lock receiving portion 46 from above, the cover lock receiving portion 46 is elastically deformed outward. When the cover lock receiving portion 46 is further pushed downward, the cover lock receiving portion 46 is restored and deformed, and the cover lock portion 45 and the cover lock receiving portion 46 are elastically locked. At this time, the bent portion 48 is bent in the thickness direction of the cover 44, so that the cover lock receiving portion 46 can be easily moved downward.

  By attaching the cover 44 to the wiring module 13, the cover 44 covers the bus bar 22, the electric wire 31, and the connector 18 from above. Thereby, the electrical storage module 10 is completed.

  According to the present embodiment, the cover 44 is locked to the resin protector 23 by the cover locking portion 50 and the cover locking receiving portion 53 being locked and the cover locking portion 45 and the cover lock receiving portion 46 being locked. It is attached. Since the cover locking portion 50 is formed at a position opposite to the power storage element 11 in the resin protector 23, the cover locking portion 50 is prevented from projecting outward from the side wall of the resin protector 23. Thereby, compared with the case where the cover lock part 45 which protrudes outward is formed in the both side walls of the resin protector 23, the wiring module 13 can be reduced in size.

  Moreover, according to this embodiment, the cover latching | locking part 50 is provided with the base 51 which protrudes in an opening direction, and the protrusion 52 which protrudes in the direction which cross | intersects an opening direction from the front-end | tip of the base 51, and is cover latching. The receiving portion 53 is a hole edge portion of the through hole 49 formed in the cover 44, and in a state where the cover locking portion 50 is inserted into the through hole 49, the protruding portion 52 extends in the opening direction at the hole edge portion. By abutting from the opposite direction, the cover 44 is prevented from coming off in the opening direction. Accordingly, it is possible to suppress the cover 44 from being detached in the opening direction of the opening 26 by a simple method of inserting the cover locking portion 50 into the through hole 49.

  Further, according to the present embodiment, the projecting portion 52 is formed so as to extend away from the cover lock portion 45, and the cover locking portion 50 is inserted into the through hole 49 and then the cover lock portion 50. By being slid in a direction approaching 45, the cover is engaged with the cover engagement receiving portion 53. Thereby, the cover latching | locking part 50 latches to the cover latching receiving part 53 from the cover lock | rock part 45 side. Thereby, it can suppress that the cover 44 moves to the direction from which the latching structure of the cover lock part 45 and the cover lock receiving part 46 remove | deviates. As a result, the cover 44 and the resin protector 23 can be firmly locked.

  Further, according to the present embodiment, the cover 44 includes the bent portion 48 that bends in the thickness direction of the cover 44 between the cover locking receiving portion 53 and the cover lock receiving portion 46. Thereby, the cover lock portion 45 and the cover lock receiving portion 46 can be locked while the cover 44 is bent at the bent portion 48. Thereby, the workability at the time of attaching the cover 44 to the resin protector 23 can be improved as compared with the case where the cover 44 is made of a rigid material and is difficult to bend in the thickness direction of the cover.

<Other embodiments>
The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention.

  (1) The bent portion 48 may be a self-hinge formed integrally with the cover 44 and formed thinner than the thickness of the cover 44.

  (2) In this embodiment, the cover locking portion 50 and the cover locking receiving portion 53 are locked by sliding the cover 44 with respect to the resin protector 23. However, the present invention is not limited to this. The stop portion 50 and the cover locking receiving portion 53 may be configured to lock the cover 44 by approaching from the direction opposite to the opening direction of the opening portion 26 of the resin protector 23.

  (3) In the present embodiment, the storage element 11 is a storage battery. However, the storage element 11 is not limited to this, and any storage element such as an electric double layer capacitor, a lithium ion capacitor, or a redox capacitor can be used.

  (4) In the present embodiment, the cover locking portion 50 is configured to protrude in the opening direction, but is not limited thereto, and the cover locking receiving portion 53 is configured to protrude from the cover 44 toward the resin protector 23. Also good.

DESCRIPTION OF SYMBOLS 11: Power storage element 12: Power storage element group 13: Wiring module 14: Electrode terminal 22: Bus bar 23: Resin protector 26: Opening part 44: Cover 45: Cover lock part 46: Cover lock receiving part 48: Bending part 50: Cover connection Stop part 51: Base part 52: Protruding part 53: Cover latching receiving part

Claims (4)

A wiring module attached to a storage element group in which a plurality of storage elements having a pair of electrode terminals are arranged,
A resin protector attached to the power storage element group and having an opening on the side surface opposite to the power storage element,
A bus bar that is accommodated in the opening of the resin protector and connects the electrode terminals of the adjacent storage elements;
An insulating cover that covers the opening of the resin protector,
The resin protector is provided with a cover locking portion for locking the cover on a side surface where the opening is formed, and the cover is provided with a cover locking receiving portion for locking to the cover locking portion. And
A cover lock portion that locks the cover is provided on the outer surface of the side wall that intersects the opening direction of the opening portion of the resin protector, and the cover lock that elastically locks the cover lock portion on the cover. A receiving part is provided ,
The cover locking portion includes a base projecting in the opening direction, and a projecting portion projecting in a direction intersecting the opening direction from the tip of the base.
The cover locking receiving portion is a hole edge portion of a through hole formed in the cover,
In a state where the cover locking portion is inserted into the through hole, the protrusion is brought into contact with the hole edge from the direction opposite to the opening direction to prevent the cover from coming off in the opening direction. Wiring module. A wiring module attached to a storage element group in which a plurality of storage elements having a pair of electrode terminals are arranged,
  A resin protector attached to the power storage element group and having an opening on the side surface opposite to the power storage element,
  A bus bar that is accommodated in the opening of the resin protector and connects the electrode terminals of the adjacent storage elements;
  An insulating cover that covers the opening of the resin protector,
  The resin protector is provided with a cover locking portion for locking the cover on a side surface where the opening is formed, and the cover is provided with a cover locking receiving portion for locking to the cover locking portion. And
  A cover lock portion that locks the cover is provided on the outer surface of the side wall that intersects the opening direction of the opening portion of the resin protector, and the cover lock that elastically locks the cover lock portion on the cover. A receiving part is provided,
  The said cover is a wiring module provided with the bending part bent in the thickness direction of the said cover between the said cover latching receiving part and the said cover lock | rock receiving part. The cover locking portion includes a base projecting in the opening direction, and a projecting portion projecting in a direction intersecting the opening direction from the tip of the base.
The cover locking receiving portion is a hole edge portion of a through hole formed in the cover,
In a state where the cover locking portion is inserted into the through hole, the protrusion is brought into contact with the hole edge from the direction opposite to the opening direction to prevent the cover from coming off in the opening direction. The wiring module according to claim 2 . The protruding portion is formed to extend in a direction away from the cover lock portion,
The cover locking portion, after being inserted into the through-hole, by being slid in a direction toward the cover locking portion, to claim 1 or claim 3 for locking said cover latch receiving portion The described wiring module.

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