JP2013070512A - Power supply box device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily design the layout of a power supply circuit device and a junction block when they are mounted on a vehicle.SOLUTION: A power supply box device 20 mounted on a vehicle, comprises: a relay mounting part 44 and a fuse mounting part 45 as an electrical component mounting part capable of mounting electrical components; a block side external connection connector part 46; a junction block part 30 having an intra-block wiring part 50; and a power supply circuit device having a power supply circuit installed therein. The junction block part 30 and the power supply circuit device 50 are integrated with each other, and the relay mounting part 44, the fuse mounting part 45, the block side external connection connector part 46, and a relay external connector part 35 as a connector part for external connector connection are provided on a part except for a back surface as a main surface of the integrated form.

Description

  The present invention relates to a technology including a power supply circuit and its peripheral components in a vehicle.

  Patent Document 1 discloses a power supply circuit for an idling stop vehicle. In Patent Document 1, a voltage supplied from a battery is boosted by a power supply stabilization circuit and output to an electrical component such as an ECU (electronic control unit).

JP 2010-52573 A

  By the way, normally, a relay, a fuse, or the like is interposed between the power supply stabilization circuit and the electrical component. The plurality of relays and the plurality of fuses are mounted on the vehicle in a unitized state as a junction block.

  However, a power supply circuit device equipped with a power supply stabilization circuit and the junction block include a connector or a connector. A component mounting part such as a relay or a fuse is provided. For this reason, it is necessary to consider the installation position and installation posture of the power supply circuit device and the junction block to the vehicle in consideration of the positions of these connectors and component mounting portions, and there is a problem that their layout design is troublesome. is there.

  Accordingly, an object of the present invention is to facilitate layout design when the power supply circuit device and the junction block are mounted on a vehicle.

  In order to solve the above-described problem, a first aspect is a power supply box device mounted on a vehicle, wherein an electrical component mounting portion capable of mounting an electrical component, a block-side external connection connector portion, and the electrical component mounting portion A junction block portion having an in-block wiring portion for electrically connecting an electrical component mounted on the block side and a connector terminal connected to the block side external connection connector portion, and a power supply circuit in which the power supply circuit is incorporated And the junction block portion and the power supply circuit device are integrated, and the electrical component mounting portion and the block-side external connection connector portion are formed on a portion excluding one main surface in the integrated form. And an external connector connecting connector portion for connecting an external connector to the power supply circuit device.

  A 2nd aspect is a power supply box apparatus which concerns on a 1st aspect, Comprising: A power supply circuit and the wiring part in a block are electrically connected internally.

  A 3rd aspect is a power supply box apparatus which concerns on the 1st or 2nd aspect, Comprising: On the other one main surface in the integrated form of the said junction block part and the said power supply circuit device, the said electrical component mounting part The block-side external connection connector portion and the external connector connection connector portion are provided.

  A fourth aspect is a power supply box device according to any one of the first to third aspects, wherein the power supply circuit device includes a power supply housing that houses the power supply circuit, and the junction block portion includes: There is provided a power supply circuit device accommodating portion having an opening on the one main surface side and having a space capable of accommodating the power supply circuit device, and the power supply circuit device passes through the opening of the power supply input device accommodating portion and the power supply It is accommodated in the circuit device accommodating portion.

  A 5th aspect is a power supply box apparatus which concerns on a 4th aspect, Comprising: The said power supply circuit device is exposed outside through the said opening of the said power supply circuit device accommodating part.

  According to the power supply box device according to the first aspect, the junction block portion and the power supply circuit device are integrated, and in the portion excluding one main surface in the integrated form, the electric component mounting portion, A block-side external connection connector portion and an external connector connection connector portion for connecting an external connector to the power supply circuit device are provided. For this reason, the power supply box device can be installed at one place in the vehicle with the one main surface facing the wall surface or the like. For this reason, the layout design at the time of mounting a power supply circuit device and a junction block part in a vehicle can be performed easily.

  According to the second aspect, since the power supply circuit and the in-block wiring portion are electrically connected internally, when the power supply circuit device and the junction block are mounted on the vehicle, it is not necessary to consider their connection configuration. Therefore, the layout design can be performed more easily.

  According to the third aspect, the layout design can be facilitated because an external connector and an electrical component connection work space or the like may be provided in front of the other main surface of the power supply box device.

  According to the 4th aspect, the said power circuit device can be easily accommodated in the said power circuit device accommodating part through the said opening of the said power circuit device accommodating part. Moreover, since the said other one main surface side is covered with the power supply circuit device accommodating part among power supply circuit devices, it can make it difficult to touch a power supply circuit device from others.

  According to the 5th aspect, it is excellent in the heat dissipation of a power supply circuit device.

It is a front view which shows the power supply box apparatus which concerns on 1st Embodiment. It is a disassembled side view which shows a power supply box apparatus same as the above. It is a partial schematic perspective view of a power supply circuit device. It is a block diagram which shows the electric constitution of a power supply box apparatus. It is a front view which shows a block side collective connector part and a relay part. It is the schematic in the VI-VI line of FIG. It is the schematic in the VII-VII line of FIG.

{First embodiment}
Hereinafter, the power supply box device according to the first embodiment will be described. 1 is a front view showing the power box device 20, FIG. 2 is an exploded side view showing the power box device 20, and FIG. 3 is a partial schematic perspective view of a power circuit device 50 of the power box device 20. FIG. 4 is a block diagram showing an electrical configuration of the power supply box device 20.

  The power supply box device 20 is mounted on a vehicle, and includes a junction block unit 30 and a power supply circuit device 50.

  Here, a schematic electrical connection relationship of the power supply box device 20 will be described. The power supply circuit device 50 includes a stabilized power supply circuit 22 as an example of a power supply circuit (see FIG. 4). The junction block 30 is a component on which the relay component 18 and the fuse component 19 are mounted (only a part is shown in FIG. 4). However, only one of the relay component 18 and the fuse component 19 may be mounted. A power line from a power source such as a battery in the vehicle is connected to the power circuit device 50 via the relay section 34 and the power circuit side external connection connector section 57A. The power supply line is connected to the stabilized power supply circuit 22 in the power supply circuit device 50, whereby a predetermined voltage is output. The power supply circuit device 50 is connected to the junction block unit 30 via the power supply circuit side internal connection connector 57B and the block side internal connection connector unit 33B. In the junction block 30, the relay part 18 or the fuse part 19 is interposed in the power line. The junction block unit 30 is connected to various electric devices (an electronic control unit mounted on the vehicle, various motors, etc.) via a block-side external connection connector unit 46, an external connector 16 and electric wires described later. The relay component 18 is on / off controlled based on a control signal or the like input via the block-side external connection connector portion 46. In FIG. 4, two stabilized power supply circuits 22 and two power supply lines are drawn, but these may be one system or may include three or more systems.

  The power supply circuit device 50 will be described more specifically.

  The power supply circuit device 50 is a component in which a stabilized power supply circuit 22 as an example of a power supply circuit is incorporated (see FIG. 4). Here, the power supply circuit device 50 includes a mounting substrate 52, a power supply casing 54, and a power supply circuit side connector portion 56.

  On the mounting substrate 52, electrical components constituting the stabilized power circuit 22 are mounted and a predetermined circuit pattern is formed, so that the stabilized power circuit 22 is formed on the mounting substrate 52.

  The power supply casing 54 is a metal or resin case that can accommodate the mounting substrate 52. The mounting power supply 54 is accommodated and fixed in the power supply casing 54, so that the stabilized power supply circuit 22 is connected to the power supply casing 54. Housed in the body 54.

  The power supply housing 54 is provided with a power circuit side connector portion 56. Here, the power supply circuit side connector portion 56 is provided on one main surface of the power supply housing 54 (in the upper part of the left surface in FIG. 2) so as to be exposed outward. More specifically, the connection side opening of the power circuit side connector portion 56 is opened to the outside of the power supply housing 54, and the other portion of the power circuit side connector portion 56 is embedded in the power supply housing 54. But the power supply circuit side connector part 56 may be provided so that it may protrude outward from the power supply housing | casing 54. FIG.

  The power supply circuit side connector section 56 has a plurality of (here, six) terminals, some of which (two on the right side in FIG. 3) are for power input, and the rest (see FIG. 3). 3 (four at the center and the left side) 3) are used for power output and the like. These terminals 57a and 57b are disposed in a common connector housing 56H. That is, the power supply circuit side connector portion 56 includes a power supply output side power supply circuit side internal connection connector portion 57A including the terminal 57a and a power supply circuit side external connection connector portion 57A for external power supply input and the terminal 57b. 57B is integrated. Note that the power supply circuit side external connection connector portion 57A for external power supply input and the power supply circuit side internal connection connector portion 57B for power supply output may be provided separately. In connecting the terminals, generally, either one is formed in a male terminal shape such as a tab, and the other is formed in a female terminal shape such as a cylinder. In order to form a male terminal shape, for example, an end portion of a bus bar wiring to be described later may be extended into an elongated plate shape. In order to form the female terminal shape, for example, the end portion of the bus bar wiring itself may be formed in a cylindrical shape, or the end portion of the bus bar wiring is formed in an elongated plate shape, and both ends are cylindrical. Terminal (also called a relay terminal) may be attached. Also in this embodiment, it is assumed that the terminal is formed in a male terminal shape or a female terminal shape as required for connection.

  The junction block unit 30 will be described more specifically. The junction block part 30 includes a block housing part 42 and an in-block wiring part 40.

  The block housing portion 42 is a portion formed of resin or the like, and includes a block housing main body portion 43 (upper portion in FIGS. 1 and 2) and a power circuit device accommodating portion 48 (lower portion in FIGS. 1 and 2). And have.

  The block housing main body 43 is formed in a bowl shape, and a relay mounting portion 44 and a fuse mounting portion 45 are provided as electrical component mounting portions on one main surface on the front side, and a block side external connection connector portion 46 is provided. Is provided. That is, when the back surface of the power supply box device 20 that is an integrated form of the power circuit device 50 and the junction block unit 30 is defined as one main surface, a portion other than the one main surface (here, different from the one main surface) A relay mounting portion 44, a fuse mounting portion 45, and a block-side external connection connector portion 46 are provided on one main surface (here, the front main surface).

  The relay mounting portion 44 is configured to be able to mount the relay component 18, and the fuse mounting portion 45 is configured to be able to mount the fuse component 19. More specifically, the relay mounting portion 44 is configured to have a recess in which the body portion of the relay component 18 can be set, and a terminal extending below the relay component 18 can be inserted into the bottom of the recess. A hole is formed. Then, the relay component 18 is mounted on the relay mounting portion 44 with the terminal of the relay component 18 being inserted into the hole. In addition, the fuse mounting portion 45 is configured to have a recess in which the fuse component 19 can be set (here, a plurality of fuse components 19 are set in parallel), and the fuse component 19 is provided at the bottom of the recess. A hole into which a terminal extending to the bottom of the terminal can be inserted is formed. Then, the fuse component 19 is mounted on the fuse mounting portion 45 with the terminal of the fuse component 19 being inserted into the hole.

  The block-side external connection connector portion 46 is configured to be able to connect the external connector 16. The external connector 16 is connected to various electric devices (such as various motors mounted on the vehicle) via electric wires or the like (see FIG. 2).

  The in-block wiring section 40 is a wiring for electrically connecting the relay component 18 and the fuse component 19 to the terminal of the external connector 16 connected to the block side external connection connector section 46 in the junction block section 30. It is. Here, the intra-block wiring section 40 is formed by a plurality of bus bar wirings formed by punching and forming a metal plate such as a copper plate into a narrow strip shape according to a predetermined wiring shape. Since such bus bar wiring is formed of a metal plate thicker than copper foil or the like, a conductive path having a relatively large cross-sectional area can be formed, and is suitable as wiring for power supply. Here, a part of the end of the in-block wiring part 40 is disposed inside the hole at the bottom of the relay mounting part 44, inside the hole at the bottom of the fuse mounting part 45, etc., and is inserted into the hole. It is arranged to be connectable to the terminals of the component 18 and the fuse component 19. The other part of the intra-block wiring part 40 extends as a terminal to the block-side external connection connector part 46. Then, by connecting the external connector 16 to the block-side external connection connector portion 46, each terminal of the external connector 16 is electrically connected to the in-block wiring portion 40. The intermediate portion of the in-block wiring portion 40 is embedded in the resin portion of the block housing main body 43 between the relay mounting portion 44 or the fuse mounting portion 45 and the in-block wiring portion 40, or The wires are wired in an insulated state along the insulating plate accommodated in the block housing main body 43.

  Further, a part of the end portion of the in-block wiring portion 40 (the end portion of one of the bus bar wires) extends toward a block side internal connection connector portion 33B described later.

  The power supply circuit device accommodating portion 48 is provided adjacent to the block housing body 43 (here, adjacent to the lower side). The power circuit device housing portion 48 has a rectangular parallelepiped space in which the power circuit device 50 can be housed. Here, the back side of the power supply circuit device accommodating portion 48 (the back side opposite to the surface on which the relay mounting portion 44 is provided) is opened outward, and the inside of the block housing main body 43 is opened through the opening. The power supply circuit device 50 is accommodated in the housing. Note that the opening of the power supply circuit device housing 48 may be closed with another lid or may remain open. Here, an example in which the opening of the power circuit device housing portion 48 remains open and the power circuit device 50 is exposed to the outside through the opening of the power circuit device housing portion 48 will be described.

  The power supply circuit device 50 is accommodated in the power supply circuit device accommodating portion 48, whereby the power supply circuit device 50 and the junction block portion 30 are integrated. In this state, the power supply circuit device side connector portion 56 of the power supply circuit device 50 is connected to the block side collective connector portion 32 in the power supply circuit device housing portion 48, whereby the power supply circuit device 50 is connected to the block side internal connection connector portion 33B. Is electrically connected to the in-block wiring section 40 and to the external connector 14 on the power supply side via the relay section 34 (see FIGS. 5 and 6).

  5 is a front view showing the block side collective connector portion 32 and the relay portion 34, FIG. 6 is a schematic view taken along line VI-VI in FIG. 5, and FIG. 7 is a schematic view taken along line VII-VII in FIG. is there.

  That is, the block side collective connector portion 32 is provided in the power supply circuit device housing portion 48 at a position from the junction block portion 30. This position is also a position facing the power supply circuit side connector portion 56 in a state where the power supply circuit device 50 is accommodated in the power supply circuit device accommodating portion 48.

  In addition, a relay external connector portion 35 that protrudes outward is provided on the outer surface of the power supply circuit device accommodating portion 48. Here, a relay external connector portion 35 is provided on the outer surface of the power supply circuit device housing portion 48 and at a side position of the block side collective connector portion 32.

  The block-side collective connector portion 32 has a housing portion 32 h that protrudes into the power supply circuit device housing portion 48 and can be connected to the power supply circuit side connector portion 56. Further, the relay external connector portion 35 has a housing portion 35 h that protrudes outside the power supply circuit device housing portion 48 and can be connected to the external connector 14 on the power supply side. The relay external connector portion 35 is connected to the external connector 14 with respect to the power supply circuit device 50, and has a configuration as a connector portion for external connector connection. Therefore, the relay external connector portion 35 as the external connector connecting connector portion is a portion excluding one main surface (rear surface) of the power supply box device 20 that is an integrated form of the power supply circuit device 50 and the junction block portion 30 (here, The other main surface that has been operated is provided on the front main surface).

  Terminals 33a on one side of the block side collective connector part 32 (here, two terminals on the right side in FIGS. 5 and 6) are electrically connected to terminals 35a (here, two terminals on the upper and lower sides) of the relay external connector part 35. Connected. Here, a conductive member having terminals 33a and 35a at both ends is formed by pressing a metal plate in the same manner as the bus bar wiring, and this conductive member is inserted into the power supply circuit device accommodating portion 48 by insert molding or the like. The above-described configuration is realized by being embedded in. Here, one end side portion including the terminal 33a of the block side collective connector portion 32 constitutes a relay internal connector portion 33A, and the relay internal portion 33A and the relay external connector portion 35 constitute a relay portion 34. Composed.

  Further, the terminals 33b on the other side of the block side collective connector portion 32 (here, the four terminals at the center and the left in FIGS. 5 and 6) are part of the end portions of the in-block wiring portion 40 (any one of them). An end portion of the bus bar wiring) is formed by extending toward the block side collective connector portion 32. A part of the in-block wiring portion 40 may be disposed in a state of being embedded in the block housing portion 42 by insert molding or the like, or may be disposed along the inner surface of the block housing portion 42 or the like. Good. Here, the other end side portion including the terminal 33b of the block side collective connector portion 32 constitutes a block side internal connection connector portion 33B.

  Then, the power circuit device 50 is housed in the power circuit device housing portion 48, and the power circuit circuit connector 50 and the block side batch connector portion 32 are integrated with the power circuit device 50 and the junction block portion 30 being integrated. Are connected together, the power circuit side external connection connector portion 57A and the power circuit side internal connection connector portion 57B are collectively connected to the relay internal connector portion 33A and the block side internal connection connector portion 33B. When the external connector 14 on the power supply side is connected to the relay external connector portion 35, the power supply circuit device 50 is connected to the power supply circuit side external connection connector portion 57A and the relay portion 34 of the power supply circuit side connector portion 56. It is connected to a power source through the external connector 14. At the same time, the power supply circuit device 50 is connected to the intra-block wiring section 40 via the power circuit side internal connection connector section 57B and the block side internal connection connector section 33B, so that the stabilized power circuit 22 and the intra-block wiring section are connected. 40 is internally connected in the power supply box device 20, and the stabilized power supply circuit 22 is connected to the relay component 18 or the fuse component 19.

  The power circuit side external connection connector portion 57A is exposed to the outside through an opening formed on the front surface of the power circuit device housing portion 48, and the external connector 14 is directly connected to the power circuit side external connection connector portion 57A. May be.

  According to the power supply box device 20 configured as described above, the junction block portion 30 and the power supply circuit device 50 are integrated, and the relay mounting portion is provided in a portion excluding the back surface which is one main surface in the integrated form. 44, a fuse mounting part 45, and a relay external connector part 35 as a connector part for connecting an external connector are provided. For this reason, the power supply box device 20 can be installed at one location in the vehicle with the back surface, which is the one main surface of the power supply device 20, facing the side wall surface of the interior of the vehicle or the engine room. For this reason, the layout design at the time of mounting the power supply circuit device 50 and the junction block part 30 in a vehicle can be performed easily. In particular, since the power box device 20 can be installed in a state where the back surface of the power box device 20 is in contact with the side surface or the like, the layout design is facilitated also from this point.

  The relay mounting portion 44, the fuse mounting portion 45, and the relay external connector portion 35 as the external connector connecting connector portion are provided on the front surface, which is another main surface of the power supply box device 20, but are not necessarily required. Instead, it may be provided on the side surface of the power supply box device 20 or the like.

  However, it is preferable to secure a connection work space for various components in front of the relay mounting portion 44, the fuse mounting portion 45, and the relay external connector portion 35. Therefore, if the relay mounting portion 44, the fuse mounting portion 45, and the relay external connector portion 35 are provided on the front surface, which is another main surface of the power box device 20, the installation layout of the power box device 20 is considered. At this time, a certain amount of space may be secured only in front of the power supply box device 20, and sufficient space may not be secured in the side and up and down directions. For this reason, the layout design of the power supply box device 20 can be performed more easily.

  Further, since the power supply circuit device 50 and the junction block unit 30 are electrically connected internally in the power supply box device 20, when the power supply circuit device 50 and the junction block unit 30 are mounted on a vehicle, they It is not necessary to consider the connection configuration. From this point, the installation layout can be easily designed. In addition, the space can be used as a space for arranging an electric wire drawn out from the connector 14.

  Further, since the power supply circuit device 50 is accommodated in the power supply circuit device accommodating portion 48 through the opening on the back side of the power supply circuit device accommodating portion 48, the accommodating operation can be easily performed. Moreover, since the power supply circuit device 50 is covered with the power supply circuit device accommodating portion 48 on the front side of the power supply box device 20 where the relay mounting portion 44, the fuse mounting portion 45, and the relay external connector portion 35 are provided, The circuit device 50 can be made difficult to be touched by others.

  Moreover, since the power supply circuit device 50 is exposed on the back side of the power supply circuit device housing portion 48, the heat dissipation performance is excellent. In particular, by disposing the back side of the power supply box device 20 in the vicinity of the side wall of the vehicle interior or the engine room, the heat of the power supply circuit device 50 is effectively radiated through the side wall.

  As described above, the present invention has been described in detail. However, the above description is illustrative in all aspects, and the present invention is not limited thereto. It is understood that countless variations that are not illustrated can be envisaged without departing from the scope of the present invention.

14, 16 Connector 18 Relay part 19 Fuse part 20 Power supply box device 22 Stabilized power supply circuit 30 Junction block part 32 Block side collective connector part 33A Relay internal connector part 33B Block side internal connection connector part 34 Relay part 35 Relay external connector part 40 In-block wiring portion 42 Block housing portion 43 Block housing main body portion 44 Relay mounting portion 45 Fuse mounting portion 46 Block side external connection connector portion 48 Power supply circuit device housing portion 50 Power supply circuit device 54 Power supply housing 56 Power supply circuit side connector portion 57A Power supply Circuit side external connector 57B Power circuit side internal connector

Claims (5)

A power supply box device mounted on a vehicle,
An electrical component mounting portion capable of mounting electrical components, a block-side external connection connector portion, an electrical component mounted on the electrical component mounting portion, and a connector terminal connected to the block-side external connection connector portion are electrically connected A junction block portion having an in-block wiring portion for connection to
A power supply circuit device incorporating the power supply circuit;
With
The junction block portion and the power supply circuit device are integrated, and the electrical component mounting portion, the block-side external connection connector portion, and the power supply circuit device are provided on a portion other than one main surface in the integrated form. And an external connector connecting connector portion for connecting an external connector to the power supply box device. The power supply box device according to claim 1,
A power supply box device in which a power supply circuit and a wiring part in a block are electrically connected internally. The power supply box device according to claim 1 or 2,
The electrical component mounting portion, the block-side external connection connector portion, and the external connector connection connector portion are provided on another main surface in an integrated form of the junction block portion and the power supply circuit device. The power box device. It is a power supply box apparatus as described in any one of Claims 1-3,
The power supply circuit device includes a power supply housing that houses the power supply circuit,
The junction block portion is provided with a power supply circuit device accommodating portion having a space that is open on the one principal surface side and can accommodate the power supply circuit device,
The power supply circuit device, wherein the power supply circuit device is accommodated in the power supply circuit device accommodating portion through the opening of the power supply input device accommodating portion. The power supply box device according to claim 4,
The power supply circuit device, wherein the power supply circuit device is exposed to the outside through the opening of the power supply circuit device housing portion.

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