WO2017208604A1

WO2017208604A1 - Connector device

Info

Publication number: WO2017208604A1
Application number: PCT/JP2017/013194
Authority: WO
Inventors: 文彦石黒; 英史大石; 泰有秋山; 浩生植田
Original assignee: 株式会社豊田自動織機
Priority date: 2016-05-31
Filing date: 2017-03-30
Publication date: 2017-12-07

Abstract

A connector device is provided to the housing (2) of a battery pack (1) and comprises: a body (11) having a front surface (11a), the body (11) also having a rear surface (11b) located on the side opposite the front surface (11a), the body (11) further having a through-hole (14) extending from the front surface (11a) to the rear surface (11b); an outside connection section (22) having an outside terminal (22a) inserted in the through-hole (14) in the body (11) and extending from the rear surface (11b) side to the outside of the body (11); a heat conductive bracket (24) provided to the part of the outside connection section (22), which is located outside the body (11); and a temperature detection element (25) provided to the bracket (24). The outside terminal (22a) is provided within the body (11). The bracket (24) has: a clamp section (28) wound so as to cover the peripheral surface of the part of the outside connection section (22); and a flange section (29) extending from the clamp section (28) so as to be positioned away from the outside connection section (22), and having the temperature detection element (25) installed thereon.

Description

Connector device

The present invention relates to a connector device.

Conventionally, a battery module in which a plurality of battery cells such as lithium ion secondary batteries are arranged in one direction is known. A battery pack in which such a battery module is fixed to a housing (case) is provided with a connector device for connecting the battery module to an external device such as a charging device. For example, in the case of the battery module described in Patent Document 1, a connector that is connected to each bus bar on the positive electrode side and the negative electrode side via a connection member is provided.

JP 2013-140769 A

The connector device provided in the battery pack as described above is provided with an external terminal connected to a connection terminal provided in the external device. The external terminal may be worn as the connecting terminal is detached. Further, foreign matter or the like may adhere to the external terminal. In these cases, the electrical resistance between the external terminal and the external device increases, and the external terminal may generate heat when the battery pack and the external device are energized. As a result, the peripheral portion of the external terminal in the connector device is deformed, and the connection terminal of the external device may not be connected to the external terminal well.

The present invention provides a connector device that can suppress deformation of the peripheral portion of the external terminal.

A connector device according to one aspect of the present invention is a connector device provided in a casing of a battery pack, and includes a front surface, a back surface located on the opposite side of the front surface, and a through hole extending from the front surface to the back surface. And an external terminal inserted into the through-hole of the main body, and an external connection extending from the back side to the outside of the main body, and an external connection having heat conductivity and located outside the main body. A bracket provided in part and a temperature detection element provided in the bracket, wherein the bracket is spaced apart from the external connection part and a clamp part wound so as to cover a part of the peripheral surface of the external connection part And a flange portion extending from the clamp portion and provided with a temperature detection element.

According to this connector device, the temperature of the external connection part having the external terminal is detected by the temperature detection element through the bracket having heat conductivity. Thereby, for example, the temperature of the external connection part during energization of the connector device can be detected. For this reason, for example, when the temperature of the external connection portion becomes higher than a predetermined threshold value, it is possible to quickly execute countermeasures such as stopping energization of the connector device. Therefore, deformation of the main body located around the external terminal can be suppressed.

A gap is provided between a part of the peripheral surface of the external connection part and the bracket, and the thermal expansion coefficient of the bracket may be smaller than the thermal expansion coefficient of the external connection part. In this case, the expansion force generated when the temperature of the external connection portion increases tends to concentrate in the gap, and the deformation of the clamp portion due to the expansion of the external connection portion is suppressed. In addition, since the thermal expansion coefficient of the bracket is smaller than the thermal expansion coefficient of the external connection part, the adhesion between the clamp part and the external connection part is improved as the temperature rises. Thereby, the heat transfer performance from an external connection part to a bracket improves.

The bracket and the external connection part may be made of the same material. In this case, the thermal expansion coefficients of the bracket and the external connection portion are equal. For this reason, even when the temperature of the external connection portion is changed, the bracket and the external connection portion are thermally expanded or contracted at the same rate, so that the bracket can be prevented from being loosened with respect to the external connection portion.

The connector device may further include a fastening member for screwing the temperature detecting element to the flange portion. In this case, the temperature detecting element can be firmly fastened to the flange portion using the fastening member.

The bracket and the fastening member may be made of the same material. When the thermal expansion coefficients of the bracket and the fastening member are different, when the bracket and the fastening member are heated, the fastening member receives a force generated due to the difference in the thermal expansion coefficient. Thereby, torque may be generated so that the fastening member is loosened. For this reason, the material which comprises a bracket and the material which comprises a fastening member are mutually made the same, and the thermal expansion coefficient of a bracket and a fastening member is made equal. Thereby, generation | occurrence | production of the said torque can be suppressed and the fastening force of a fastening member can be maintained.

The external connection portion is rotatably provided in the through hole, and the connector device includes a communication connector that outputs a detection result of the temperature detection element, a harness that connects the temperature detection element and the communication connector, a bracket, You may further provide the rotation suppression structure which suppresses rotation of an external connection part by contact | abutting.

In this case, when the bracket provided in a part of the external connection portion located outside the main body portion comes into contact with the rotation suppressing structure, the bracket functions as a rotation stopper for the external connection portion. Thereby, even if it is a case where an external connection part is rotatably provided in a through-hole, rotation of a bracket and an external connection part is suppressed. Therefore, winding around the external connection part etc. of the harness connected to the temperature detection element provided in a bracket is suppressed. For this reason, it is prevented that tension is applied to the harness due to the winding, and the occurrence of disconnection of the harness, poor connection between the harness and the temperature detection element, poor connection between the harness and the communication connector, or the like is suppressed. Therefore, even when the temperature detection element to which the harness is connected is used, it is possible to suppress the occurrence of problems associated with the rotation of the external connection portion.

The rotation suppression structure may abut against the flange portion. In this case, the temperature detecting element can be easily attached without restriction on the place.

The flange portion extends from the clamp portion along a direction intersecting the extending direction of the through hole, and has an L-shaped plate shape when viewed from the extending direction of the through hole and the direction intersecting the extending direction of the flange portion. May be. In this case, the length of the flange portion in the direction orthogonal to the extending direction can be shortened. As a result, torque (moment) applied to the clamp portion when the flange portion abuts against the rotation suppression structure can be reduced, and slippage between the clamp portion and the external connection portion can be suppressed. In addition, since the flange portion has an L-shaped plate shape, even if the length of the flange portion in the direction orthogonal to the extending direction is shortened, a region for installing the temperature detection element can be secured.

The rotation suppression structure may have a convex portion that protrudes from the back surface of the main body portion. In this case, by adjusting the protrusion amount and position of the convex portion, the convex portion can be in good contact with the bracket.

The convex portion may be integrated with the main body portion. In this case, since the convex part functioning as the rotation suppressing structure can be formed at the time of forming the main body part, the number of parts can be reduced.

A connector device according to another aspect of the present invention is a connector device provided in a casing of a battery pack, and includes a front surface, a back surface located on the opposite side of the front surface, and a first through extending from the front surface to the back surface. A first external connection portion having a main body portion having a hole and a second through hole, and a first external terminal for charging inserted into the first through hole of the main body portion, and extending from the back surface side to the outside of the main body portion And a second external terminal for discharge inserted into the second through hole of the main body, and the temperature of the second external connection extending from the back surface side to the outside of the main body, and the temperature of the first external connection A temperature sensing element for sensing.

According to this connector device, the temperature of the first external connection portion having the first external terminal for charging is detected by the temperature detection element. Thereby, for example, the temperature of the first external connection part during energization of the connector device (particularly during charging of the battery pack) can be detected. In particular, it is possible to reliably detect the temperature of the first external connection portion at which a large current easily flows during charging of the battery pack. For this reason, for example, when the temperature of the first external connection portion becomes higher than a predetermined threshold value, it is possible to quickly execute countermeasures such as stopping energization of the connector device. Therefore, deformation of the main body located around the external terminal can be suppressed.

The first external connection portion is rotatably provided in the first through hole, the second external connection portion is rotatably provided in the second through hole, and the connector device transmits A first bracket that is provided on the first external connection portion that is thermally and located outside the main body portion; and a second bracket that is provided on the second external connection portion that is thermally conductive and located outside the main body portion. A first temperature detection element provided in the first bracket, a second temperature detection element provided in the second bracket, a communication connector for outputting detection results of the first temperature detection element and the second temperature detection element, and a first The first harness connecting the temperature detection element and the communication connector, the second harness connecting the second temperature detection element and the communication connector, and the first bracket by abutting against the first bracket, 2nd bracket Doo and the suppressing rotation suppressing structure rotation of the second external connecting portion by abutting may further comprise a.

In this case, when the first bracket provided in the first external connection portion located outside the main body portion contacts the rotation suppressing structure, the first bracket functions as a rotation stop for the first external connection portion. Thereby, since rotation of the 1st bracket and the 1st external connection part is controlled, winding around the 1st external connection part etc. of the 1st harness connected to the 1st temperature sensing element provided in the 1st bracket is controlled. It is done. Similarly, since rotation of the second bracket and the second external connection portion is suppressed by the rotation suppression structure, to the second external connection portion of the second harness connected to the second temperature detection element provided in the second bracket, and the like. Winding of is also suppressed. For this reason, it is prevented that tension is applied to the first and second harnesses due to these windings, disconnection of the first and second harnesses, connection failure between the first harness and the first temperature detection element (and the second harness and the first harness). 2) Connection failure between the temperature detection element) or connection failure between the first harness and the communication connector (and connection failure between the second harness and the communication connector) is suppressed. Therefore, generation | occurrence | production of malfunctions, such as the said disconnection with respect to a 1st harness and a 2nd harness, can be suppressed.

The first bracket extends from the clamp portion along the direction intersecting the extending direction of the first through hole, and a clamp portion wound so as to cover the peripheral surface of the first external connection portion. The rotation suppression structure may be in contact with the flange portion. In this case, the first temperature detection element can be easily attached without restriction on the place.

The flange portion may have an L-shaped plate shape when viewed from a direction intersecting with the extending direction of the first through hole and the extending direction of the flange portion. In this case, the length of the flange portion in the direction orthogonal to the extending direction can be shortened. Thereby, the torque (moment) applied to the clamp portion when the flange portion abuts against the rotation suppression structure can be reduced, and the occurrence of slipping between the clamp portion and the first external connection portion can be suppressed. In addition, since the flange portion has an L-shaped plate shape, even if the length of the flange portion in the direction orthogonal to the extending direction is shortened, an area for installing the first temperature detection element can be secured.

The rotation suppression structure may have a convex portion that protrudes from the back surface of the main body portion. In this case, by adjusting the protrusion amount and position of the convex portion, the convex portion can be in good contact with the first bracket.

According to the present invention, it is possible to provide a connector device that can suppress deformation of the peripheral portion of the external terminal.

FIG. 1 is a diagram illustrating an internal structure of the battery pack according to the first embodiment. FIG. 2A is a perspective view of the main body connector as viewed from the back side, and FIG. 2B is a front view of the main body connector. FIG. 3 is a side view of the main body connector. FIG. 4 is a diagram illustrating a part of the external connection portion of the main body connector. FIG. 5 is a sectional view taken along line VV in FIG. FIG. 6 is a plan view showing the plate-like member before being wound around the wiring. FIG. 7 is a configuration diagram schematically showing the periphery of the main body connector. FIG. 8 is a schematic diagram for explaining the connection between the main body connector and the charging connector. FIG. 9 is a schematic diagram for explaining the connection between the main body connector and the jumper connector. Fig.10 (a) is the perspective view which looked at the main body connector which concerns on the modification of 1st Embodiment from the back surface side, FIG.10 (b) is the front view of the said main body connector. FIG. 11 is a schematic diagram for explaining the connection between the main body connector and the charging connector according to the modification. FIG. 12 is a schematic diagram for explaining the connection between the main body connector and the jumper connector according to the modification. Fig.13 (a) is the perspective view which looked at the main body connector from the back surface side, and FIG.13 (b) is a front view of a main body connector. FIG. 14 is a side view of the main body connector. FIG. 15 is a diagram illustrating a part of the external connection portion of the main body connector. 16 is a cross-sectional view taken along line XVI-XVI in FIG.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the description of the drawings, the same reference numerals are used for the same or equivalent elements, and redundant descriptions are omitted.

(First embodiment)
FIG. 1 is a diagram illustrating an internal structure of the battery pack according to the first embodiment. A battery pack 1 shown in FIG. 1 is a device used as a battery of a vehicle (external device) such as a forklift such as a low lift truck, and is housed in a predetermined battery housing portion. The battery pack 1 includes a housing 2, a plurality of battery modules 3, a main body connector 4, an output terminal 5, and a junction box 6.

The housing 2 is made of metal, for example, and has a bottomed box shape corresponding to the shape of the battery housing portion. “Metal” in the present specification does not indicate only a single metal element, but may indicate various alloys such as carbon steel or stainless steel. That is, the housing | casing 2 may be comprised by the metal or the alloy, for example.

The battery module 3 is fixed to the side plate 2a of the housing 2 via a bracket or the like. The battery module 3 includes an array body in which a plurality of battery cells are arrayed, and a restraining member that applies a restraining load to the array body in the array direction of the battery cells. The battery cell is a secondary battery such as a lithium ion battery. Adjacent battery cells in the array are electrically connected in series by connecting the positive terminal and the negative terminal with a bus bar member or the like. The positive terminal and the negative terminal located at both ends of the series connection in the plurality of battery cells are connected to the junction box 6 via the harness H, respectively.

The main body connector 4 is a connector device for charging the battery pack 1, and is provided, for example, outside the upper portion of the front plate 2 b in the housing 2. The main body connector 4 is fastened to the housing 2 by using fastening members such as bolts and nuts, and is electrically connected to the output terminal 5 and the battery module 3 via the junction box 6. The detailed configuration of the main body connector 4 will be described later.

The output terminal 5 is a terminal for outputting the electric power stored in each battery module 3 to the vehicle. The output terminal 5 includes a positive electrode terminal 5a and a negative electrode terminal 5b connected to a device in the vehicle (see FIG. 7).

The junction box 6 is a device that performs charge / discharge control of the battery pack 1, and is disposed inside the upper portion of the front plate 2 b corresponding to the position of the main body connector 4. Details of the junction box 6 and details of the control of the junction box 6 will be described later.

Next, a specific configuration of the main body connector of the first embodiment will be described with reference to FIGS. FIG. 2A is a perspective view of the main body connector as viewed from the back side, and FIG. 2B is a front view of the main body connector. FIG. 3 is a side view of the main body connector. FIG. 4 is a diagram illustrating a part of the external connection portion of the main body connector. FIG. 5 is a sectional view taken along line VV in FIG.

2A, 2B, and 3, the main body connector 4 includes a main body portion 11 and three

connection members

21, 31, 41 that are attached to the main body portion 11. The main body portion 11 is a resin member in which a main portion 12 that rotatably supports the

connection members

21, 31, and 41 and a base portion 13 that is attached to the housing 2 are integrated. As resin which comprises the main-body part 11, a polypropylene (PP), a polyacetal (POM), a polycarbonate (PC), a polyamide (PA) etc. are mentioned, for example. The surface of the main portion 12 that is farthest from the base portion 13 is the surface 11a of the main body portion 11, and the surface of the base portion 13 that is the farthest facing the surface 11a is the back surface 11b of the main body portion 11. The main body 11 has through holes 14 to 16 extending from the front surface 11a to the back surface 11b so as to penetrate the main portion 12 and the base portion 13. The through holes 14 to 16 are separated from each other and are provided in the vicinity of different corners of the surface 11a. A connection member 21 is inserted into the through hole 14, a connection member 31 is inserted into the through hole 15, and a connection member 41 is inserted into the through hole 16. Hereinafter, the direction in which the through holes 14 to 16 extend (or the direction in which the

connection members

21, 31, 41 extend) is simply referred to as “extension direction A”.

The main portion 12 is a portion located outside the housing 2 when the base portion 13 is attached to the housing 2, and protrudes from the base portion 13. The main portion 12 is provided with a recess 17 that is recessed along the extending direction A from the central region of the surface 11a. The recess 17 is a portion that fits into a charging connector C1 (see FIG. 8) of a charger described later and a protrusion (not shown) provided in a jumper connector C2 (see FIG. 9) described later, and extends. It has a circular shape when viewed along the direction A. By fitting the concave portion 17 and the protruding portion, it is possible to suppress the occurrence of rattling or the like when the main body connector 4 is connected to the charging connector C1 or the jumper connector C2. In addition, a pair of

dents

17a and 17b for aligning with the protrusions are provided at the edges of the recesses 17.

The base portion 13 has a rectangular shape when viewed along the extending direction A, and each corner portion thereof is located outside the main portion 12 when viewed along the extending direction A. Corresponding holes (not shown) are provided in each corner of the base 13 along the extending direction. Bolts for mounting the main body connector 4 to the housing 2 are inserted into these holes (not shown). The base portion 13 may have a function as the main portion 12. That is, the base 13 may support the

connection members

21, 31, and 41 in a rotatable manner.

The base portion 13 is located in the central region of the base portion 13 and has a convex portion 19 protruding along the extending direction A from the back surface 11b. The convex portion 19 is a cylindrical projection provided integrally with the base portion 13 of the main body portion 11. The diameter of the convex portion 19 is, for example, approximately the same as the distance between the through

holes

14 and 15. The protruding amount of the convex portion 19 along the extending direction A is larger than the distance from the back surface 11b to the bracket 24 described later, and is smaller than the distance from the back surface 11b to the tube 22c described later. Further, the protruding amount of the convex portion 19 is larger than the distance from the back surface 11b to a bracket 34 described later. In addition, as viewed from the extending direction A, the distance from the side surface 19a of the convex portion 19 to the through hole 14, the distance from the side surface 19a of the convex portion 19 to the through hole 15, and the side surface 19a of the convex portion 19 to the through hole The distances up to 16 are about the same. These distances are preferably shorter.

As shown in FIG. 4 in addition to FIGS. 2 and 3, the connection member 21 that is rotatable in the through hole 14 of the main body 11 includes an external connection portion 22 (first external connection portion) and an external connection portion. A crimping terminal 23 provided on 22, a bracket 24 (first bracket) provided on the external connection portion 22 at a position different from the crimping terminal 23, and a temperature detection element 25 (first temperature detection element) provided on the bracket 24. , A harness 26 (first harness) for connecting the temperature detection element 25 and the junction box 6, and a fastening member 27 for fastening the temperature detection element 25 to the bracket 24.

The external connection unit 22 includes an external terminal 22a that directly contacts an external device such as a charger, and a wiring 22b that is connected to the external terminal 22a (first external terminal). The external terminal 22 a is a cylindrical female terminal inserted into the through hole 14. The outer peripheral surface of the external terminal 22 a is in contact with the surface constituting the through hole 14. From the viewpoint of the external terminal 22a having high conductivity and heat conductivity, the external terminal 22a is preferably made of, for example, copper. Further, a part of the external terminal 22 a on the back surface 11 b side is exposed from the main body 11.

The wiring 22b in the external connection portion 22 is a wiring for electrically connecting the external terminal 22a and the junction box 6, and extends from the back surface 11b side to the outside of the main body portion 11. One end of the wiring 22b is inserted into the end of the external terminal 22a on the back surface 11b side. The end of the external terminal 22a where the wiring 22b is inserted is caulked. In order to prevent a short circuit between the wiring 22b and another device or the like, at least a part of the wiring 22b is covered with an insulating tube 22c. From the viewpoint of providing high conductivity and heat conductivity, for example, a copper wiring is preferably used as the wiring 22b.

The crimp terminal 23 is a terminal that is crimped to the other end of the wiring 22b exposed from the tube 22c. The crimp terminal 23 is attached to, for example, a terminal portion of the junction box 6. The positional relationship between the crimp terminal 23 and the terminal part of the junction box 6 can be adjusted by rotating the wiring 22b when attaching the crimp terminal 23 to the terminal part.

The bracket 24 is a member having heat conductivity formed, for example, from a metal or alloy plate. The bracket 24 is provided in the external connection part 22 located outside the main body part 11. Specifically, the bracket 24 is a member provided in the wiring 22b located between the external terminal 22a and the crimp terminal 23. In the first embodiment, the bracket 24 is provided in the vicinity of the external terminal 22a on the back surface 11b side and in a part of the wiring 22b exposed from the tube 22c. As shown in FIGS. 2 to 5, the bracket 24 is continuous from the clamp portion 28 wound around the partial peripheral surface of the wiring 22 b and the clamp portion 28 so as to be separated from the external connection portion 22. And an extending flange portion 29. The flange portion 29 extends along a direction intersecting with the extending direction A. In the first embodiment, the flange portion 29 extends in a direction orthogonal to the extending direction.

Here, the bracket 24 before becoming a part of the connection member 21 will be described with reference to FIG. FIG. 6 is a plan view showing a plate-like member before being wound around the wiring 22b. As shown in FIG. 6, the plate-like member 51 that later becomes the bracket 24 includes a rectangular first portion 52 that later becomes the clamp portion 28, and an L-shaped second portion 53 that later becomes the flange portion 29. have. The plate member 51 has a thickness of 0.5 mm to 1.0 mm, for example.

The first portion 52 forms the clamp portion 28 by being rounded in the long side direction. At this time, in the first portion 52, the end portion 52a on the second portion 53 side and the end portion 52b located on the opposite side of the end portion 52a in the long side direction are bonded to each other.

The second portion 53 has a rectangular main portion 54 and a connecting portion 55 that connects the main portion 54 and the first portion 52. The long side of the main portion 54 extends so as to be orthogonal to the long side of the first portion 52. The connecting portion 55 extends from the end portion 52 a of the first portion 52 toward the end portion 54 a on the first portion 52 side of the main portion 54.

A hole 56 is provided in the end portion 54 a of the main portion 54. When the clamp portion 28 is formed, the first portion 52 is rounded so as not to overlap the hole 56. In addition, a plate-like projecting portion 57 having a rectangular shape is provided on the end portion 54b located on the opposite side of the end portion 54a in the long side direction of the main portion 54. One end 57a of the protrusion 57 is a fixed end, while the other end 57b of the protrusion 57 is a free end. For this reason, the protrusion part 57 can bend from the edge part 57a as a base point.

Referring back to FIG. 5, the clamp portion 28 is wound so as to cover a part of the peripheral surface of the wiring 22b as described above, and is a part in contact with the part. The clamp portion 28 is formed by winding the first portion 52 of the plate-like member 51 shown in FIG. 6 around a part of the wiring 22b with the central axis of the external connection portion 22 (wiring 22b) as an axis. . In addition, the part which comprises the clamp part 28 in the 1st part 52 is rounded circularly along the surrounding surface of the wiring 22b, and is extended in the normal state. Thereby, the clamp part 28 is firmly wound around the wiring 22b so as to press the partial peripheral surface of the wiring 22b. Therefore, the adhesion of the clamp part 28 to the wiring 22b is improved.

The flange portion 29 is a portion where the temperature detecting element 25 is installed, and is a portion that is not wound around the wiring 22 b in the plate-like member 51 that constitutes the bracket 24. For this reason, the flange part 29 is corresponded to the 2nd part 53 of the plate-shaped member 51 shown by FIG. 6, and has L-shaped board shape. As described above, since the end portion 52 b of the first portion 52 does not overlap the hole 56, the hole 56 is exposed at the flange portion 29. Further, between the bracket 24 and the partial peripheral surface of the wiring 22b around which the clamp portion 28 is wound (specifically, between the flange portion 29 of the bracket 24 and the peripheral surface of the wiring 22b). Is provided with a gap S. For example, the gap S functions as a relief portion of the force generated when the wiring 22b expands.

The material constituting the bracket 24 is preferably a metal material having a thermal expansion coefficient smaller than that of the wiring 22b from the viewpoint of preventing the clamp portion 28 from loosening with respect to the wiring 22b. The material constituting the bracket 24 is more preferably an iron-based material (for example, carbon tool steel) from the viewpoint of ease of processing of the clamp portion 28.

The temperature detection element 25 is an element for detecting the temperature of the external terminal 22a through the wiring 22b and the bracket 24. The temperature detection element 25 includes a temperature detection unit 25a that detects the temperature of the flange portion 29, and a terminal unit 25b to which the temperature detection unit 25a is attached. For example, a thermistor is used as the temperature detection unit 25a. The terminal portion 25b is made of the same material as that of the bracket 24, for example. The terminal portion 25 b is provided with an opening that overlaps the hole 56 of the bracket 24. The diameter of the opening is substantially the same as the diameter of the hole 56 provided in the bracket 24.

The harness 26 is a conductive wire that transmits the detection result of the temperature detection unit 25a to the junction box 6. One end of the harness 26 is connected to the temperature detection unit 25 a, and the other end of the harness 26 is connected to the junction box 6. The harness 26 is held against the flange portion 29 by a protruding portion 57 provided on the bracket 24. Thereby, the position shift of the temperature detection part 25a accompanying the movement of the harness 26 can be prevented.

The fastening member 27 includes a hole 56 provided in the bracket 24, a bolt 27a inserted into the opening of the terminal portion 25b of the temperature detection element 25, and a washer 27b sandwiched between the screw head of the bolt 27a and the terminal portion 25b. And a nut 27c attached to the tip of the bolt 27a. The bolt 27a is fastened to the nut 27c, whereby the temperature detecting element 25 is screwed to the flange portion 29. As a result, the temperature detecting element 25 is satisfactorily fixed on the flange portion 29. From the viewpoint of maintaining the fastening force of the fastening member 27, the material constituting the fastening member 27 is preferably the same as the material constituting the bracket 24.

The connection member 31 has the same configuration as the connection member 21. Therefore, the connection member 31 includes an external connection portion 32 having external terminals 32 a and wirings 32 b, a crimp terminal 33 provided in the external connection portion 32, and a bracket 34 provided in the external connection portion 32 at a position different from the crimp terminal 33. (Second bracket), a temperature detection element 35 (second temperature detection element) provided in the bracket 34, a harness 36 (second harness) connecting the temperature detection element 35 and the junction box 6, and a temperature detection element 35 A fastening member 37 for fastening to the bracket 34 is provided. On the other hand, unlike the

connection members

21 and 31, the connection member 41 does not include a bracket, a temperature detection element, a harness, and a fastening member. Therefore, the connection member 41 includes an external connection portion 42 having external terminals 42 a and wirings 42 b, and a crimp terminal 43 provided on the external connection portion 42. Note that the length of the wiring 42b of the connecting member 41 is shorter than the

wirings

22b and 42b.

Next, the connection mode of the main body connector 4, the output terminal 5, and the junction box 6 will be described with reference to FIG. FIG. 7 is a configuration diagram schematically showing the periphery of the main body connector. As shown in FIG. 7, the junction box 6 houses a battery control ECU (Electronic Control Unit) 61, a relay R1, wires L1 to L3, and the like. The battery control ECU 61 is a control unit that controls the battery pack 1. The battery control ECU 61 controls the battery pack 1 in accordance with the type of connector attached to the main body connector 4. Details of control according to the type of connector will be described later.

The wiring L1 electrically connects the bus bar (not shown) to which the positive terminal of each battery module 3 is connected and the external terminal 22a of the connecting member 21. The wiring L2 branches from the wiring L21, the wiring L21 which electrically connects the bus bar (not shown) to which the negative terminal of each battery module 3 is connected and the external terminal 32a via the relay R1, and the negative terminal And a wiring L22 connected to 5b. The wiring L3 electrically connects the external terminal 42a and the positive electrode terminal 5a. Note that at least a part of the wiring L1 is the wiring 22b shown in FIG. Similarly, at least a part of the wiring L2 is the wiring 32b, and at least a part of the wiring L3 is the wiring 42b.

The relay R1 can be switched between an on state (conduction state) in which each battery module 3 and the main body connector 4 are electrically connected, and an off state (interruption state) in which each battery module 3 and the main body connector 4 are electrically disconnected. It is. The relay R1 is, for example, a mechanical relay, and performs switching operation between an on state and an off state by a control signal from the battery control ECU 61.

The battery control ECU 61 is connected to the temperature detection element 25 provided in the wiring L1 through the harness 26 and is connected to the temperature detection element 35 provided in the wiring L2 through the harness 36. For this reason, the battery control ECU 61 generates, for example, a control signal for switching the relay R1 between the on state and the off state, or a control signal for the energization stop operation between the battery modules 3 based on the detection results of the

temperature detection elements

25 and 35. Output.

Next, the processing of the battery control ECU 61 according to the type of connector will be described in detail with reference to FIGS. FIG. 8 is a schematic diagram for explaining the connection between the main body connector 4 and the charging connector C1. In FIG. 8, the cross section along the extension direction of the terminal of the main body connector 4 and the charging connector C1 is shown. A charger 100 shown in FIG. 8 is a device for charging each battery module 3 of the battery pack 1. The charger 100 includes a charging connector C1. The charging connector C <b> 1 has a shape that can be fitted to the main body connector 4, and has two

terminals

101 and 102. The

terminals

101 and 102 are both male terminals. The terminal 101 is a positive terminal for supplying power to the battery pack 1. The terminal 102 is a negative electrode terminal for supplying power to the battery pack 1.

When the charging connector C1 is attached to the main body connector 4, the

terminals

101 and 102 are inserted into and electrically connected to the

external terminals

22a and 32a, respectively. When the charging connector C1 is attached to the main body connector 4, no terminals are inserted into the external terminal 42a.

Subsequently, the operation when the charging connector C1 is mounted will be described. The battery control ECU 61 outputs a control signal to the relay R1 so that the relay R1 is turned off when neither connector is attached to the main body connector 4. When the battery control ECU 61 detects that the charging connector C1 is attached to the main body connector 4, the battery control ECU 61 outputs a control signal to the relay R1 so as to turn on the relay R1. Thereby, the battery pack 1 is in a state where it can be charged via the main body connector 4.

During the charging of the battery module 3, the battery control ECU 61 monitors the temperature detected by the

temperature detection elements

25 and 35. When it is determined that the temperature detected by at least one of the

temperature detection elements

25 and 35 exceeds a predetermined threshold (for example, an arbitrary temperature of 100 ° C. to 200 ° C.), the battery control ECU 61 Even if the charging is not completed, a control signal is immediately output to the relay R1 so that the relay R1 is turned off. Alternatively, the battery control ECU 61 immediately outputs a control signal for stopping energization between the battery modules 3.

When it is detected that the charging connector C1 is attached to the main body connector 4 after detecting that the charging connector C1 is detached from the main body connector 4, the battery control ECU 61 turns the relay R1 off. A control signal is output to the relay R1.

FIG. 9 is a schematic diagram for explaining the connection between the main body connector 4 and the jumper connector C2. In FIG. 9, the cross section along the extension direction of the terminal of the main body connector 4 and the jumper connector C2 is shown. The jumper connector C2 shown in FIG. 9 is a connector for electrically connecting the positive electrode terminal 5a and the positive electrode terminal of each battery module 3 so that electric power can be output to the vehicle. The jumper connector C <b> 2 has a shape that can be fitted to the main body connector 4 and has two

terminals

111 and 112.

Terminals

111 and 112 are both male terminals. The terminal 111 and the terminal 112 are electrically short-circuited to each other, and are terminals for electrically connecting the positive terminal of each battery module 3 and the positive terminal 5a.

When the jumper connector C2 is attached to the main body connector 4, the

terminals

111 and 112 are inserted into and electrically connected to the

external terminals

22a and 42a, respectively. When the jumper connector C2 is attached to the main body connector 4, no terminal is inserted into the external terminal 32a.

As described above, when no connector is attached to the main body connector 4, the battery control ECU 61 outputs a control signal to the relay R1 so that the relay R1 is turned off. When it is detected that the jumper connector C2 is attached to the main body connector 4, the battery control ECU 61 outputs a control signal for continuously turning off the relay R1. Thereby, the battery pack 1 will be in the state which can output electric power favorably to a vehicle. Even if the relay R1 is turned on, the battery pack 1 can output power to the vehicle, but by turning the relay R1 off, the battery pack 1 can be more reliably prevented from being supplied to unnecessary portions. is doing.

During the discharge of the battery module 3, the battery control ECU 61 monitors the temperature detected by the temperature detection element 25. When it is determined that the temperature detected by the temperature detection element 25 exceeds a predetermined threshold (for example, an arbitrary temperature of 100 ° C. to 200 ° C.), the battery control ECU 61 controls the energization stop operation between the battery modules 3. Output signal immediately.

According to the main body connector 4 of the first embodiment described above, the temperature of the external connection portion 22 having the external terminal 22a is detected by the temperature detection element 25 through the wiring 22b and the bracket 24 having heat conductivity. . Further, the temperature of the external connection portion 32 having the external terminal 32a is detected by the temperature detection element 25 via the wiring 32b and the bracket 34 having heat conductivity. Thereby, the temperature of the

external connection parts

22 and 32 during the energization of the main body connector 4 can be detected. For this reason, for example, when the temperature of any of the

external connection units

22 and 32 becomes higher than a predetermined threshold value, the battery control ECU 61 can quickly execute countermeasures such as stopping energization of the main body connector 4. As a result, it is possible to suppress deformation of the main body portion 11 located around any one of the

external connection portions

22 and 32.

In the first embodiment, by attaching the temperature detection element 25 to the external connection portion 22 using the bracket 24, the temperature detection element 25 can be attached easily and without restriction on the place. For this reason, the bracket 24 can be provided on the wiring 22b in the vicinity of the external terminal 22a as in the first embodiment. Thereby, the temperature of the external terminal 22a can be detected with higher accuracy than when the temperature detection element 25 is provided on the crimp terminal 23, for example. Similarly, by using the bracket 34, the temperature of the external terminal 32 a can be detected with higher accuracy than when the temperature detection element 35 is provided on the crimp terminal 33, for example.

The current flowing through the battery module 3 as described above tends to be larger when the battery module 3 is charged than when the battery module 3 is discharged. In particular, when the battery module 3 is rapidly charged, a large current flows through the battery module 3 in a short time. In addition, the magnitude of the current flowing through the conductive material is proportional to the degree of increase in the temperature of the conductive material. Therefore, when charging the battery module 3 (especially when rapidly charging), in the main body portion 11 of the main body connector 4, the periphery of the

external terminals

22a and 32a for charging the battery module 3 is easily deformed. In such a main body connector 4, it is particularly effective to attach the

temperature detection elements

25 and 35 only to the

external connection portions

22 and 32 as described above from the viewpoint of suppressing deformation of the main body portion 11 and from the viewpoint of cost. is there.

A gap S is provided between the bracket 24 and the wiring 22b which is the external connection portion 22, and the thermal expansion coefficient of the bracket 24 is preferably smaller than the thermal expansion coefficient of the external connection portion 22. In this case, the expansion force generated when the temperature of the external connection portion 22 rises easily concentrates in the gap S, and the deformation of the clamp portion 28 due to the expansion of the external connection portion 22 is suppressed. In addition, since the coefficient of thermal expansion of the bracket 24 is smaller than the coefficient of thermal expansion of the external connection part 22, the adhesion between the clamp part 28 and the external connection part 22 is improved as the temperature rises. Thereby, the heat transfer performance from the external connection part 22 to the bracket 24 improves.

The bracket 24 and the external connection portion 22 are preferably made of the same material. In this case, the thermal expansion coefficients of the bracket 24 and the external connection portion 22 are equal. For this reason, even when the temperature of the external connection portion 22 changes, the bracket 24 and the external connection portion 22 thermally expand or contract at the same rate, so that the bracket 24 is loosened with respect to the external connection portion 22. This can be suppressed.

The main body connector 4 includes a fastening member 27 for screwing the temperature detection element 25 to the flange portion 29. For this reason, the temperature detection element 25 can be firmly fastened to the flange portion 29 using the fastening member 27.

The bracket 24 and the fastening member 27 are preferably made of the same material. When the thermal expansion coefficients of the bracket 24 and the fastening member 27 are different, when the bracket 24 and the fastening member 27 are heated, the fastening member 27 receives the force generated due to the difference in the thermal expansion coefficient. Thereby, torque may be generated so that the fastening member 27 is loosened. For this reason, the material which comprises the bracket 24 and the material which comprises the fastening member 27 are mutually the same, and generation | occurrence | production of the said torque can be suppressed by making the thermal expansion coefficient of the bracket 24 and the fastening member 27 equal, A fastening member can be suppressed. 27 fastening force can be maintained. Further, the temperature detection element 25 can be easily attached to and detached from the bracket 24.

FIG. 10A is a perspective view of a main body connector according to a modification of the first embodiment as seen from the back side, and FIG. 10B is a front view of the main body connector. As shown in FIGS. 10A and 10B, the main body connector 4A according to the modified example is different from the main body connector 4 of the first embodiment, in addition to the connecting

members

21, 31, 41, and the connecting member 71. It has. For this reason, the main body portion 11 of the main body connector 4A is provided with a through hole 81 extending from the front surface 11a to the back surface 11b, similarly to the through holes 14 to 16. The connection member 71 is inserted into the through hole 81. The connection member 71 has the same configuration and length as the connection member 41. Therefore, the connection member 71 does not include a bracket, a temperature detection element, a harness, and a fastening member, and includes an external connection portion 72 having an external terminal 72a and a wiring 72b, and a crimp terminal 73 provided in the external connection portion 72. I have. The connection member 71 is connected to the negative electrode terminal 5b.

Next, the connection mode of the main body connector 4A, the output terminal 5, and the junction box 6A according to this modification and the connection mode according to the type of connector will be described with reference to FIGS. FIG. 11 is a schematic diagram for explaining the connection between the main body connector 4A and the charging connector C1, and FIG. 12 is a schematic diagram for explaining the connection between the main body connector 4A and the jumper connector C3.

As shown in FIGS. 11 and 12, the main body connector 4A of the present modification includes a connection member 71, and the connection member 71 is connected to the negative electrode terminal 5b via the wiring L4 in the junction box 6A. Has been. For this reason, unlike the first embodiment, the wiring L2A of the junction box 6A does not have the wiring L22. Therefore, the wiring L2A is a wiring that electrically connects the bus bar and the external terminal 32a via the relay R1.

As shown in FIG. 11, when the charging connector C1 is attached to the main body connector 4A, the

terminals

101 and 102 are inserted into and electrically connected to the

external terminals

22a and 32a, respectively. On the other hand, the terminals of the charging connector C1 are not inserted into the

external terminals

42a and 72a. For this reason, the external terminal 22a (first external terminal) of the external connection portion 22 (first external connection portion) inserted into the through hole 14 (first through hole) and the external connection portion 32 inserted into the through hole 15. The external terminal 32a functions as an external terminal for charging. On the other hand, the external terminal 42a (second external terminal) of the external connection portion 42 (second external connection portion) inserted into the through hole 16 (second through hole) and the external connection portion 72 inserted into the through hole 81 The external terminal 72a does not function as an external terminal for charging.

The operation when the charging connector C1 is mounted in the present modification is the same as that in the first embodiment. Therefore, when the battery control ECU 61 detects that the charging connector C1 is attached to the main body connector 4A, the battery control ECU 61 outputs a control signal for turning on the relay R1. In addition, when it is determined that the temperature detected by at least one of the

temperature detection elements

25 and 35 exceeds a predetermined threshold, or when it is detected that the charging connector C1 is disconnected from the main body connector 4A, The battery control ECU 61 outputs a control signal that turns off the relay R1.

The jumper connector C3 shown in FIG. 12 includes

terminals

113 and 114 that are electrically short-circuited to each other in addition to the

terminals

111 and 112. The

terminals

113 and 114 are terminals for electrically connecting the negative electrode terminal of each battery module 3 and the negative electrode terminal 5b. When the jumper connector C3 is attached to the main body connector 4A, the

terminals

111 and 112 are inserted into and electrically connected to the

external terminals

22a and 42a, respectively. Further, the

terminals

113 and 114 of the jumper connector C3 are inserted and electrically connected to the

external terminals

32a and 72a, respectively. For this reason, the

external terminals

42a and 72a function as external terminals for discharge. In addition, the

external terminals

22a and 32a serve both as external terminals for charging and external terminals for discharging.

In this modification, when the battery control ECU 61 detects that the jumper connector C3 is attached to the main body connector 4A, the battery control ECU 61 outputs a control signal for turning on the relay R1. Thereby, the battery pack 1 will be in the state which can be discharged to a vehicle. In addition, during the discharge of the battery module 3, when it is determined that the temperature detected by at least one of the

temperature detection elements

25 and 35 exceeds a predetermined threshold, or the jumper connector C3 is disconnected from the main body connector 4A. If detected, the battery control ECU 61 outputs a control signal for turning off the relay R1.

The main body connector 4A according to such a modification can detect the temperatures of the

external connection portions

22 and 32 by the

temperature detection elements

25 and 35, respectively, similarly to the main body connector 4 of the first embodiment. For this reason, the deformation | transformation of the main-body part 11 located in the periphery of either of the

external connection parts

22 and 32 can be suppressed by using the main body connector 4A. In particular, the deformation of the main body 11 during charging of the battery pack 1 can be satisfactorily suppressed.

In addition, in the main body connector 4A, as in the first embodiment, since the

temperature detection elements

25 and 35 are attached only to the

external connection portions

22 and 32 for charging, respectively, while suppressing an increase in cost. The deformation of the main body part 11 can be satisfactorily suppressed.

(Second Embodiment)
Below, the connector apparatus which concerns on 2nd Embodiment is demonstrated. In the description of the second embodiment, descriptions overlapping with the first embodiment are omitted, and only the parts different from the first embodiment are described. In other words, the description of the first embodiment may be used as appropriate for the second embodiment within the technically possible range.

A specific configuration of the main body connector according to the second embodiment will be described with reference to FIGS. Fig.13 (a) is the perspective view which looked at the main body connector from the back surface side, and FIG.13 (b) is a front view of a main body connector. FIG. 14 is a schematic side view of the main body connector. FIG. 15 is a diagram illustrating a part of the external connection portion of the main body connector. 16 is a cross-sectional view taken along line XVI-XVI in FIG.

As shown in FIGS. 13A, 13B, and 14, the main body connector 4B includes a communication connector 91 in addition to the main body portion 11 and the

connection members

21A, 31A, and 41 as in the first embodiment. ing. The communication connector 91 is a terminal part connected to the junction box 6, for example.

Here, unlike the connection member 21 of the first embodiment, the connection member 21A includes a harness 92 that connects the temperature detection element 25 and the communication connector 91 instead of the harness 26. The harness 92 is a conductive wire that transmits the detection result of the temperature detection element 25 to the communication connector 91. One end of the harness 92 is connected to the temperature detection element 25, and the other end of the harness 92 is connected to the communication connector 91. The harness 92 is pressed against the flange portion 29 by a protruding portion 57 provided on the bracket 24 (see FIG. 14). Thereby, the position shift of the temperature detection element 25 accompanying the movement of the harness 92 can be prevented.

Further, unlike the connection member 31 of the first embodiment, the connection member 31A includes a harness 93 that connects the temperature detection element 35 and the communication connector 91 instead of the harness 36. The harness 93 is a conducting wire that transmits a detection result by the temperature detection element 35 to the communication connector 91. One end of the harness 93 is connected to the temperature detection element 35, and the other end of the harness 93 is connected to the communication connector 91.

When the main body connector 4B includes the

connection members

21A and 31A, the detection result of the temperature detection element 25 is input to the communication connector 91 via the harness 92 and the detection result of the temperature detection element 35 via the harness 93. Is entered. The communication connector 91 outputs the input detection result to, for example, the junction box 6.

16, in the bracket 24 of the second embodiment, the distance from the wiring 22b to the end 29a opposite to the clamp part 28 of the flange part 29 is defined as the shortest distance D. The shortest distance D is larger than the shortest distance (see FIG. 13B) from the wiring 22b to the side surface 19a of the convex portion 19 as viewed from the extending direction A. The shortest distance from the wiring 22b to the side surface 19a of the convex portion 19 corresponds to a length obtained by adding a difference between the radius of the external terminal 22a and the radius of the wiring 22b to the distance from the side surface 19a to the through hole 14. . As described above, the clamp portion 28 of the bracket 24 is firmly wound around the wiring 22b. For this reason, the bracket 24 rotates in synchronization with the rotation of the external connection portion 22. In addition, as described in the first embodiment, the protruding amount of the convex portion 19 is larger than the distance from the back surface 11 b to the bracket 24. Therefore, for example, when the external connection portion 22 inserted into the through hole 14 is rotated, at least the end portion 54 a (see FIG. 6) of the main portion 54 constituting the flange portion 29 comes into contact with the convex portion 19. As the flange portion 29 abuts on the convex portion 19 in this manner, the flange portion 29 functions as a rotation stopper for the external connection portion 22 and the convex portion 19 functions as a rotation suppression structure that suppresses the rotation of the external connection portion 22. To do.

In the bracket 34, as in the bracket 24, the shortest distance from the peripheral surface of the wiring 32 b to the end of the flange portion 39 opposite to the clamp portion 38 is the distance from the peripheral surface of the wiring 32 b to the side surface 19 a of the convex portion 19. Is bigger than. Therefore, for example, when the external connection portion 32 inserted into the through hole 15 is rotated, the flange portion 39 contacts the convex portion 19. For this reason, the convex part 19 functions as a rotation suppression structure that suppresses the rotation of not only the external connection part 22 but also the external connection part 32.

The main body connector 4B according to the second embodiment described above can achieve the same effects as those of the first embodiment. In addition, when the bracket 24 provided on the external connection portion 22 abuts on the convex portion 19, the bracket 24 functions as a rotation stopper with respect to the external connection portion 22. Thereby, since rotation of the bracket 24 and the external connection part 22 is suppressed, the winding of the harness 92 connected to the temperature detection element 25 provided in the bracket 24 around the external connection part 22 and the like is suppressed. For this reason, it is prevented that tension is applied to the harness 92 due to the winding, and the occurrence of disconnection of the harness 92, poor connection between the harness 92 and the temperature detection element 25, or poor connection between the harness 92 and the communication connector 91 is suppressed. The Therefore, even when the temperature detection element 25 to which the harness 92 is connected is used, it is possible to suppress the occurrence of problems associated with the rotation of the external connection portion 22.

In addition, the bracket 34 provided on the external connection portion 32 comes into contact with the convex portion 19, so that the bracket 34 functions as a rotation stop with respect to the external connection portion 32. Thereby, since rotation of the bracket 34 and the external connection part 32 is suppressed, winding around the external connection part 32 of the harness 93 connected to the temperature detection element 35 provided in the bracket 34 is suppressed. For this reason, it is prevented that tension is applied to the harness 93 due to the winding, and the occurrence of disconnection of the harness 93, poor connection between the harness 93 and the temperature detection element 35, or poor connection between the harness 93 and the communication connector 91 is suppressed. The Therefore, even when the temperature detection element 35 to which the harness 93 is connected is used, it is possible to suppress the occurrence of problems associated with the rotation of the external connection portion 32.

Furthermore, since both of the

harnesses

92 and 93 are connected to the same communication connector 91, the other harness can follow the movement of one harness. For this reason, for example, when the bracket 24 does not contact the convex portion 19 and the rotation of the external connection portion 22 is not suppressed, the bracket 24 rotates with the rotation of the external connection portion 22, and the harness 92 is connected to the external connection portion 22 or the like. May wrap around. Accordingly, not only the disconnection or the like may occur in the harness 92 but also the disconnection or the like may occur in the harness 93 pulled by the harness 92. However, in the second embodiment, rotation of not only the external connection portion 22 but also the external connection portion 32 is suppressed by the convex portion 19. Therefore, according to the main body connector 4B of 2nd Embodiment, generation | occurrence | production of malfunctions, such as the said disconnection with respect to the

harnesses

92 and 93, is suppressed favorably.

The convex portion 19 can come into contact with the flange portion 29 of the bracket 24. In this case, the temperature detection element 25 can be attached easily and without restriction on the place.

The flange portion 29 has an L-shaped plate shape when viewed from the direction intersecting with the surface formed by the extending direction A and the extending direction of the flange portion 29. For this reason, in the flange part 29, the length of the direction orthogonal to the extending direction A can be shortened. Thereby, when the flange part 29 contact | abuts to the convex part 19, the torque added to the clamp part 28 can be reduced, and the loosening of the clamp part 28 with respect to the external connection part 22 can be suppressed. In addition, since the flange portion 29 is L-shaped when viewed from the direction intersecting the surface, even if the length of the flange portion 29 in the direction orthogonal to the extending direction A is shortened, the temperature detection element 25 can be secured. Note that the surface formed of the extending direction A and the extending direction of the flange portion 29 is a surface having at least a side extending along the extending direction A and a side extending along the extending direction of the flange portion 29.

The convex portion 19 is integrated with the main body portion 11. For this reason, since the convex part 19 which functions as a rotation suppression structure can be formed at the time of formation of the main-body part 11, reduction of components is realizable.

Note that the connector device according to the present invention is not limited to the above-described embodiments and modifications. For example, in the above-described embodiment and modification, the bracket 24 is provided on the wiring 22b in the external connection portion 22, but is not limited thereto. For example, the clamp part 28 of the bracket 24 may be wound around the peripheral surface of the part exposed from the main body part 11 in the external terminal 22a. In this case, since the bracket 24 is in direct contact with the external terminal 22a, the temperature detecting element 25 can accurately detect the temperature of the external terminal 22a.

In the above embodiment and the modification, the thermal expansion coefficient of the bracket 24 is smaller than the thermal expansion coefficient of the external connection portion 22, but is not limited thereto. In other words, the thermal expansion coefficient of the bracket 24 may be greater than or equal to the thermal expansion coefficient of the external connection portion 22. In this case, deformation of the clamp portion 28 of the bracket 24 is suppressed at low temperatures.

In the above embodiment and the modification, the temperature detection element 25 is fastened to the flange portion 29 via the fastening member 27, but is not limited thereto. For example, the temperature detection element 25 may be fixed on the flange portion 29 with solder or the like. In this case, the hole 56 may not be provided in the flange portion 29.

In the above embodiment and the modification, the material constituting the bracket 24 is preferably the same material as the material constituting the wiring 22b from the viewpoint of thermal conductivity from the wiring 22b. In this case, it is more preferable that the material constituting the external terminal 22a and the material constituting the wiring 22b are the same. In addition, the material which comprises the bracket 24 and the material which comprises the terminal part 25b of the temperature detection element 25 may mutually differ. For example, the material constituting the bracket 24 may be an iron-based material, and the material constituting the terminal portion 25b may be copper.

In the above modification, the bracket 24 is not provided in the external connection portion 22, and the bracket 34 may not be provided in the external connection portion 32. In this case, the temperature detection element 25 may detect the temperature of the external terminal 22a that can be connected to the charging connector C1 without being provided on the bracket 24. Similarly, the temperature detection element 35 may detect the temperature of the external terminal 32 a that can be connected to the charging connector C <b> 1 without being provided on the bracket 34.

The above embodiment and the above modification may be combined as appropriate. For example, you may combine the modification of 1st Embodiment, and 2nd Embodiment.

DESCRIPTION OF SYMBOLS 1 ... Battery pack, 2 ... Housing | casing, 3 ... Battery module, 4, 4A, 4B ... Main body connector (connector apparatus) 6, 6A ... Junction box, 11 ... Main part, 11a ... Front surface, 11b ... Back surface, 14- 16, 81 ... through hole, 21, 21A, 31, 31A, 41, 71 ... connection member, 22, 32, 42, 72 ... external connection part, 22a, 32a, 42a, 72a ... external terminal, 22b, 32b, 42b ... Wiring, 24, 34 ... Bracket, 25, 35 ... Temperature sensing element, 26, 36, 92, 93 ... Harness, 27, 37 ... Fastening member, 28 ... Clamp part, 29 ... Flange part, 61 ... Battery control ECU, 91 ... Communication connector, S ... Gap.

Claims

A connector device provided in a casing of a battery pack,
A main body having a front surface, a back surface located opposite to the front surface, and a through hole extending from the front surface to the back surface;
An external terminal inserted into the through hole of the main body, and an external connection extending from the back side to the outside of the main body;
A bracket having heat conductivity and provided in a part of the external connection portion located outside the main body portion;
A temperature sensing element provided on the bracket;
With
The bracket is
A clamp part wound so as to cover the part of the peripheral surface;
A flange portion extending from the clamp portion so as to be separated from the external connection portion, and the temperature detecting element is installed.
Connector device.
A gap is provided between the part of the peripheral surface of the external connection portion and the bracket,
The connector device according to claim 1, wherein a thermal expansion coefficient of the bracket is smaller than a thermal expansion coefficient of the external connection portion.
The connector device according to claim 1, wherein the bracket and the external connection portion are made of the same material.
The connector device according to any one of claims 1 to 3, further comprising a fastening member for screwing the temperature detection element to the flange portion.
The connector device according to claim 4, wherein the bracket and the fastening member are made of the same material.
The external connection portion is rotatably provided in the through hole,
A communication connector for outputting a detection result of the temperature detection element;
A harness connecting the temperature sensing element and the communication connector;
The connector device according to any one of claims 1 to 5, further comprising a rotation suppression structure that suppresses rotation of the external connection portion by contacting the bracket.
The connector device according to claim 6, wherein the rotation suppression structure abuts on the flange portion.
The flange portion is
Extending from the clamp portion along a direction intersecting the extending direction of the through hole,
The connector device according to claim 6 or 7, wherein the connector device has an L-shaped plate shape when viewed from a direction intersecting with the extending direction of the through hole and the extending direction of the flange portion.
The connector device according to any one of claims 6 to 8, wherein the rotation suppression structure has a convex portion protruding from the back surface of the main body portion.
The connector device according to claim 9, wherein the convex portion is integrated with the main body portion.
A connector device provided in a casing of a battery pack,
A main body having a front surface, a back surface located opposite to the front surface, and a first through hole and a second through hole extending from the front surface to the back surface;
A first external connection portion that has a first external terminal for charging inserted into the first through hole of the main body portion, and extends from the back surface side to the outside of the main body portion;
A second external connection portion having a second external terminal for discharge inserted into the second through hole of the main body portion, and extending from the back surface side to the outside of the main body portion;
A temperature detection element for detecting the temperature of the first external connection part;
A connector device comprising:
The first external connection portion is rotatably provided in the first through hole,
The second external connection portion is rotatably provided in the second through hole,
A first bracket that has heat conductivity and is provided on the first external connection located outside the main body;
A second bracket having heat conductivity and provided in the second external connection portion located outside the main body portion;
A first temperature sensing element provided on the first bracket;
A second temperature sensing element provided on the second bracket;
A communication connector that outputs detection results of the first temperature detection element and the second temperature detection element;
A first harness connecting the first temperature sensing element and the communication connector;
A second harness connecting the second temperature sensing element and the communication connector;
A rotation suppression structure that suppresses rotation of the first external connection portion by contacting the first bracket and suppresses rotation of the second external connection portion by contacting the second bracket; The connector device according to claim 11.
The first bracket is
A clamp part wound around the peripheral surface of the first external connection part;
A flange portion extending from the clamp portion along a direction intersecting with the extending direction of the first through hole, and the first temperature detection element is installed,
The connector device according to claim 12, wherein the rotation suppression structure abuts on the flange portion.
The connector device according to claim 13, wherein the flange portion has an L-shaped plate when viewed from a direction intersecting with the extending direction of the first through hole and the extending direction of the flange portion.
The connector device according to any one of claims 12 to 14, wherein the rotation suppressing structure has a protrusion protruding from the back surface of the main body.
The connector device according to claim 15, wherein the convex portion is integrated with the main body portion.