JP6044495B2 - Wiring module - Google Patents

Description

  The present invention relates to a wiring module.

  For example, a power storage module mounted on an electric vehicle or a hybrid vehicle is generally configured by connecting a large number of power storage elements in series via a bus bar.

  Such a power storage module includes, for example, a terminal for detecting the state (voltage, temperature, etc.) of the power storage element group, and an electric wire that connects the terminal and a controller such as an ECU (see, for example, Patent Document 1). ).

JP 2012-226882 A

  In Patent Document 1, a detection terminal to which a detection electric wire is crimped is bolted to an electrode together with a connection member that connects between storage elements, and thus an ECU or the like that controls the storage element group and the battery by the detection terminal. It can be electrically connected to the controller.

  By the way, as a method of connecting a detection terminal (detection wire) and a device such as a controller, there is a method of connecting via a connector in addition to bolt tightening. In the method of connecting through the connector, the connector is attached corresponding to the storage element to be detected, but the storage element group is configured by arranging a plurality of storage elements adjacent to each other. There may be a problem of erroneous connection that the battery is attached to a power storage element different from the power storage element to be detected.

  The present invention has been completed based on the above circumstances, and an object of the present invention is to provide a wiring module having improved mounting workability by preventing erroneous connection of connectors.

  In order to solve the above problems, the present invention is a wiring module attached to a power storage element group in which a plurality of power storage elements having positive and negative electrode terminals are arranged, and a plurality of detection wires for detecting the state of the power storage elements, A plurality of connectors to which the detection electric wires are led out and attached to the electric storage element to be detected; and an insulating protector having an anchoring portion for holding the connector and fixing the detection electric wires, made of an insulating material, The length of each of the plurality of detection wires is a wiring module that is set corresponding to the attachment position of the connector from which each of the detection wires is led out.

  In the present invention, the lengths of the plurality of detection wires for detecting the state of the storage element are set corresponding to the connector mounting positions from which the respective detection wires are derived. The storage element to be attached is specified, and misconnection can be prevented. As a result, according to the present invention, it is possible to provide a wiring module with improved mounting workability by preventing connector misconnection.

The present invention may have the following configurations.
The said insulation protector may be provided with the guide part which guides the said detection electric wire to the said fixing | fixed part.
With such a configuration, since the detection electric wire is guided to the fixed portion, the detection electric wire can be smoothly routed.

The insulation protector may be provided with a partition wall that partitions adjacent connectors.
When the number of detection wires increases, troubles such as tangling of wires may occur during routing work. However, if it is set as the above structure, since the detection electric wire derived | led-out from each connector can be routed in the state partitioned off by the partition wall, a routing operation can be performed smoothly.

  ADVANTAGE OF THE INVENTION According to this invention, the wiring module which improved the attachment workability | operativity by preventing the incorrect connection of a connector can be provided.

Front view of a power storage module including the wiring module of Embodiment 1 Perspective view of power storage module Front view of a power storage module including a wiring module with a lid open Partial sectional view taken along line IV-IV in FIG. The perspective view of an electrical storage module provided with the wiring module of the state which opened the cover part Front view of storage element group Side view of storage element group Front view of the wiring module with the lid open

<Embodiment 1>
A first embodiment of the present invention will be described with reference to FIGS. The power storage module M1 including the wiring module 20 of 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 M1 has a power storage element group 10 in which a plurality of power storage elements (not shown) are arranged, and a wiring module 20 is attached to the power storage element group 10. 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. In the following description, the upper side in FIG.

(Storage element group 10)
As shown in FIG. 1, the power storage module M <b> 1 of the present embodiment includes a power storage element group 10 in which a plurality (five in the present embodiment) of power storage element packs 11 formed by connecting four power storage elements in series are arranged. In the present embodiment, the power storage element is a thin laminate type power storage element, and the power storage element is accommodated therein.

  Each storage element pack 11 has a flat and substantially rectangular parallelepiped shape, and as shown in FIG. 7, positive and negative terminal portions 12 and 12 project from the back surface (the right side surface in FIG. 7). Adjacent power storage element packs 11 are arranged so that adjacent terminal portions 12 and 12 have opposite polarities, and are connected in series via a connection member (not shown).

  As shown in FIGS. 4 and 6, a connector portion 13 that receives the connector 40 that houses the detection terminal 45 is recessed in the front surface of the storage element pack 11. A tab-like terminal 15 connected to each power storage element is accommodated in the connector portion 13 (see FIG. 4). That is, four terminals 15 are projected and arranged in one connector portion 13. The four terminals 15 arranged in the connector portion 13 are electrically connected to the terminals 45 of the mating connector 40. The plurality of power storage element packs 11 are arranged so that the direction of the connector portion 13 faces in the reverse direction (see FIG. 6).

(Wiring module 20)
The wiring module 20 includes an insulating protector 21 made of an insulating material having a connector holding portion 25 that holds the connector 40.

(Insulation protector 21)
As shown in FIGS. 1 and 2, the insulation protector 21 has an elongated shape in the direction in which the electricity storage element packs 11 are arranged (the left-right direction in FIG. 1). As shown in FIG. 3, the insulating protector 21 includes a holding member 24 that holds the connector 40, and a lid member 22 that is connected to the holding member 24 via the hinge 23 and covers the holding member 24. The lid member 22 is formed with a locking hole 22 </ b> A for receiving the locking projection 35 of the holding member 24.

  The holding member 24 fixes the connector holding part 25 that holds the connector 40, the guide groove 28 that guides the detection electric wire 50 (an example of a guide part), the electric wire accommodation part 30 that accommodates the detection electric wire 50, and the detection electric wire 50. Fixing part 31 to be provided.

  Five connector holding portions 25 are provided side by side in the longitudinal direction. A partition wall 26 is provided between the adjacent connector holding portions 25. The connector holding part 25 has a shape along the outer periphery of the connector 40. An attachment projection 27 for attaching the insulation protector 21 to the power storage element group 10 is formed on the outside of the connector holding portion 25 so as to protrude.

  The guide groove 28 for guiding the detection electric wire 50 has a function of routing the detection electric wire 50 led out from the connector 40 held in the connector holding portion 25 and guiding it to the electric wire housing portion 30 side. A pair of retaining pieces 29 for preventing the detection electric wires 50 from coming off are formed on the guide grooves 28 so as to protrude.

  The electric wire housing portion 30 connects the first housing wall 30A continuous from the guide groove 28, the second housing wall 30B formed at a position facing the first housing wall 30A, and the first housing wall 30A and the second housing wall 30B. A bottom wall 30C.

  At the upper ends of the first accommodation wall 30A and the second accommodation wall 30B, a holding portion 33 that holds the detection electric wire 50 and prevents it from coming off is provided. The pressing portion 33 includes a first pressing portion 33A including a pair of pressing pieces 331A and 331A protruding inward from the upper end portion of the first receiving wall 30A and the upper end portion of the second receiving wall 30B, and the upper end of the first receiving wall 30A. And a second pressing portion 33B that extends from the portion to the upper end of the second housing wall 30B.

  The second pressing portion 33B is locked by being fitted into a pressing portion receiving hole 34 having an end portion provided in the second accommodation wall 30B. The second receiving wall 30B is provided with a locking projection 35 that locks the lid.

  A fixing portion 31 for fixing the detection electric wire 50 is provided at the right end portion in FIG. The fixing portion 31 extends in the longitudinal direction of the bottom wall 30C of the electric wire housing portion 30, and the detection electric wire 50 placed on the fixing portion 31 is fixed by a method such as winding of tape 32 (see FIG. 1).

(Connector 40)
As shown in FIG. 4, the terminal 45 is accommodated in the connector 40 held by the connector holding portion 25. The connector 40 includes a substantially rectangular parallelepiped housing 41, four terminals 45 accommodated in the housing 41, and four detection electric wires 50 connected to the terminals 45.

  The housing 41 is formed with a retaining protrusion 41 </ b> A that is retained by the connector portion 13. In the housing 41, four terminal accommodating portions 42 are formed in parallel. A lance 43 that engages with the terminal 45 accommodated in the terminal accommodating portion 42 is formed on the inner peripheral surface of the terminal accommodating portion 42 by projecting into the terminal accommodating portion 42 so as to bend.

  The terminal 45 accommodated in the housing 41 is a so-called female terminal 45. At one end portion (upper end portion in FIG. 4), barrel portions 46 and 47 to which the detection electric wires 50 are connected are formed, and the other end portion ( The lower end portion in FIG. 4 has a box shape and is formed with a connection portion 48 that can be connected to the power storage element.

  Barrel portions 46 and 47 are not shown in detail, but are a wire barrel portion 46 that is crimped to an exposed core wire (not shown) exposed at the end of detection wire 50, and a portion that is covered with an insulation coating of detection wire 50. And an insulation barrel portion 47 that is pressure-bonded to the surface.

  The connection portion 48 is formed with an elastic contact piece (not shown) so that the storage element and the terminal 45 of the connector 40 are electrically connected when the elastic contact piece and the terminal 15 of the connector portion 13 come into contact with each other. It has become. An engaging portion (not shown) that engages with the lance 43 is formed between the connecting portion 48 of the terminal 45 and the barrel portions 46 and 47.

  The terminal 45 accommodated in the connector 40 is a terminal 45 that detects the state of the power storage element, and specifically, a voltage detection terminal 45 that detects the voltage of the power storage element. The detection electric wire 50 connected to the terminal 45 is led out of the housing 41 from the inner wall 42A (the wall portion arranged on the upper side in FIG. 4) of the terminal accommodating portion 42, and is, for example, a control unit such as an ECU. (Not shown).

  Now, in this embodiment, the length of the some detection electric wire 50 is set corresponding to the attachment position of the connector 40 from which each detection electric wire 50 is derived | led-out. Specifically, the length of the detection electric wire 50 is set such that the position where the connector 40 from which the detection electric wire 50 is led is attached becomes longer as the position away from the fixing portion 31 of the insulation protector 21.

(Assembly method of wiring module 20)
When assembling the wiring module 20 of the present embodiment, a detection electric wire 50 whose length is set corresponding to the attachment position of the connector 40 is prepared. Next, the insulation coating of the terminal of the detection electric wire 50 is peeled and removed to connect the terminal 45, and the terminal 45 is accommodated in the terminal accommodating portion 42 of the corresponding connector 40. Specifically, among the five connectors 40 shown in FIG. 8, the leftmost connector 40 accommodates the terminal 45 to which the long detection wire 50 is connected, and the terminal 45 to which the short detection wire 50 is connected as it approaches the right side. To be accommodated.

  Next, the connector 40 is attached to the connector holding part 25 while confirming the length of the detection electric wire 50. Specifically, the connector 40 from which the short detection wire 50 is led is attached to the connector holding portion 25 so as to be arranged on the right side in FIG. At this time, in the present embodiment, the lengths of the plurality of detection electric wires 50 are set corresponding to the attachment positions of the connectors 40 from which the respective detection electric wires 50 are led out. Absent.

  Next, when the detection electric wire 50 led out from the connector 40 is fitted into the guide groove 28, the detection electric wire 50 is prevented from being detached by a pair of retaining pieces 29 provided on the guide groove 28, and along the partition wall 26. Then, it is guided to the electric wire housing part 30 side. Since the detection electric wire 50 led out from the connector is separated from the detection electric wire 50 connected to the adjacent connector 40 by the partition wall 26 provided in the insulation protector 21, the detection electric wire connected to the separate connector 40. 50 comrades are not entangled on the way from the back wall 42A to the electric wire housing part 30.

  Next, the detection electric wire 50 arranged in the electric wire housing portion 30 is accommodated in the electric wire housing portion 30 by being arranged on the fixed portion 31 side while being arranged below the first pressing portion 33A. When the end portion of the pressing portion 33B is fitted into the pressing portion receiving hole 34 of the second housing wall 30B and locked, the detection electric wire 50 is prevented from coming off by the pressing portions 33A and 33B. In this way, the wiring module 20 shown in FIG. 8 is obtained.

(Assembly method to power storage element group 10)
Next, the plurality of power storage element packs 11 are arranged such that the adjacent terminal portions 12 and 12 have different polarities, and the wiring module 20 is attached to the surface on the side where the connector portion 13 is provided.

  When the connector 40 attached to the wiring module 20 is fitted so as to fit into the connector portion 13 of the electricity storage device pack 11 and the attachment protrusion 27 of the wiring module 20 is attached to the end of the electricity storage device group 10, the wiring module is obtained. 20 assembly is completed.

  When the assembly of the wiring module 20 is completed, the terminals 45 of the connector 40 are engaged with the terminals 15 in the connector portion 13 and become conductive. Next, when the lid member 22 of the wiring module 20 is placed on the holding member 24 and the locking projection 35 provided on the holding member 24 (second housing wall 30B) is fitted into the locking hole 22A of the lid member 22, the lid The member 22 is locked to the holding member 24.

(Operation and effect of this embodiment)
In the present embodiment, the lengths of the plurality of detection wires 50 that detect the state of the storage element are set corresponding to the attachment positions of the connectors 40 from which the respective detection wires 50 are derived. The power storage element to which the connector 40 is to be attached is specified by the length, and erroneous connection can be prevented. As a result, according to the present embodiment, it is possible to provide the wiring module 20 with improved mounting workability by preventing the connector 40 from being erroneously connected.

  Moreover, according to this embodiment, since the insulation protector 21 is provided with the guide groove 28 which guides the detection electric wire 50 to the fixing | fixed part 31, the wiring operation | work which routes the detection electric wire 50 to the fixing | fixed part 31 is carried out smoothly. It can be carried out.

  Further, according to the present embodiment, since the insulating protector 21 is provided with the partition wall 26 that partitions between the adjacent connectors 40, the detection electric wire 50 led out from each connector 40 is partitioned by the partition wall 26. The arrangement can be made in a state, and the detection electric wire 50 can be arranged smoothly.

<Other embodiments>
The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention.
(1) In the above embodiment, the insulating protector 21 including the guide groove 28 (guide portion) for guiding the detection wire 50 to the fixed portion 31 is shown, but the guide portion for guiding the detection wire to the fixed portion is not provided. There may be provided a guide portion that is not groove-shaped.
(2) In the above-described embodiment, the insulating protector 21 provided with the partition wall 26 that partitions the adjacent connectors 40 is shown. However, the insulator protector 21 may be provided without the partition wall.
(3) In the above-described embodiment, the insulating protector 21 provided with the pressing portion 33 that prevents the detection electric wire 50 from being detached from the electric wire housing portion 30 is shown. However, the insulating protector 21 may not be provided, or may be a separate member. The electric wire may be fixed.
(4) In the above-described embodiment, an example in which the terminal 45 for detecting the voltage is used as the terminal 45 for detecting the state of the storage element has been described. However, a terminal for detecting the temperature may be used as the terminal.

M1 ... electric storage module 10 ... electric storage element group 12 ... terminal part (electrode terminal)
DESCRIPTION OF SYMBOLS 13 ... Connector part 15 ... (Connector part) terminal 20 ... Wiring module 21 ... Insulation protector 22 ... Cover member 23 ... Hinge 24 ... Holding member 25 ... Connector holding part 26 ... Partition wall 28 ... Guide groove (guide part)
DESCRIPTION OF SYMBOLS 29 ... Retaining piece 30 ... Electric wire accommodating part 30A ... 1st accommodating wall 30B ... 2nd accommodating wall 30C ... Bottom wall 31 ... Fixed part 40 ... Connector 41 ... Housing 42 ... Terminal accommodating part 42A ... Back wall 45 ... Detection terminal ( Terminal for detecting the state of a single cell)
50 ... Detection wire

Claims (3)

A wiring module attached to a power storage element group in which a plurality of power storage elements having positive and negative electrode terminals are arranged,
A plurality of detection wires for detecting the state of the power storage element, a plurality of connectors attached to the power storage device to be detected and the detection wires are led out, and an insulating material, holding the connector, An insulation protector having a fixing portion for fixing the detection wire;
The wiring module in which the lengths of the plurality of detection wires are set corresponding to the attachment positions of the connectors from which the detection wires are derived. The wiring module according to claim 1, wherein the insulation protector includes a guide portion that guides the detection electric wire to the fixed portion. The wiring module according to claim 1, wherein the insulating protector is provided with a partition wall that partitions adjacent connectors.

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