JP2012014963A - Power supply for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To connect a connector simply and easily while providing it in a limited space.SOLUTION: The power supply for a vehicle comprises a battery case 41 encasing a battery block 10, a control box 21 connected to the battery case 41 via a wire harness 30 and a connector 35, and an outer case 42 housing the control box 21. The connector 35 consists of a disconnectable connector 35A connected to one end of the wire harness 30, and a fixed connector 35B fixed to the end face 21A of the control box 21. The outer case 42 is provided, on the end face 21A of the control box 21, with a wiring space 46 of the wire harness 30, and an attach/detach opening 47 of the connector 35 is provided in the wiring space 46. The control box 21 fixes the fixed connector 35B by using the end face 21A, to which the fixed connector 35B is fixed, as an inclined plane 21a which widens the wiring space 46 toward the attach/detach opening 47.

Description

  The present invention mainly relates to a power supply device for a large current used for a power source of a motor for driving a vehicle such as a hybrid vehicle or an electric vehicle, and in particular, is connected to a wire harness that connects a battery block to a control box. The present invention relates to a power supply device with improved connector attachment / detachment.

  An automobile such as an electric vehicle that runs on a motor or a hybrid vehicle that runs on both a motor and an engine is equipped with a power supply device in which battery cells are housed in a case. In order to obtain an output for driving an automobile with a motor, this power supply device is connected to a large number of unit cells in series to increase the output voltage to form a battery block. In order to charge and discharge each unit cell while protecting each unit cell, this battery block is connected to a control box on which a control circuit is mounted via a number of lead wires.

  A conventional power supply device is shown in FIGS. In the power supply device shown in these drawings, the battery block 91 and the control box 92 are connected by a wire harness 93 including a plurality of lead wires. The wire harness 93 is connected to the control box 92 via the connector 95 so as to be detachable. The wire harness 93 includes a voltage detection line 93A for detecting the voltage of each battery constituting the battery block 91, a temperature detection line 93B for detecting the temperature of the battery, a current detection line 93C for detecting current, and an external There is an external connection line 93D connected to the device, and it is composed of a large number of lead wires. A plurality of wire harnesses 93 and connectors 95 are used to connect the wire harness 93 composed of a large number of lead wires to the control box 92, and a large number of connectors 95 are fixed to the control box 92. The connector 95 includes a detachable connector 95A connected to one end of the wire harness 93 and a fixed connector 95B fixed to the control box 92. The detachable connector 95A is connected to the fixed connector 95B so as to be detachable.

  Further, as shown in FIGS. 1 and 2, the control box 92 is accommodated in the outer case 94, and a wire harness 93 is accommodated inside the outer case 94. The outer case 94 is provided with a wiring space 96 on the end face of the control box 92, and a wire harness 93 is accommodated therein. The control box 92 fixes the fixed connector 95B, and connects the detachable connector 95A of the wire harness 93 thereto. This structure is assembled by connecting the detachable connector 95A of the wire harness 93 to the fixed connector 95B of the control box 92 in a state where the control box 92 is fixed to the outer case 94. The outer case 94 has a detachable opening 97 above the wiring space 96 in FIG. 2 in order to connect the detachable connector 95A to the fixed connector 95B. In this power supply device, a hand holding the detachable connector 95A is inserted into the wiring space 96 through the detachable opening 97, and the detachable connector 95A is connected to the fixed connector 95B of the control box 92.

JP 2007-48515 A

  The above structure has a drawback that it cannot be easily attached / detached because it puts a hand in a narrow wiring space and pushes and connects the attachment / detachment connector in the lateral direction and pulls it out in the lateral direction. In particular, since the connector is disposed sideways in a narrow wiring space, it takes much time to attach and detach the connector. Furthermore, since a large number of connectors are arranged in a narrow wiring space, it takes more time to attach and detach the connectors, resulting in poor work efficiency. In particular, the detachable connector cannot be easily detached from the fixed connector arranged at the bottom of the wiring space. Furthermore, in a state where the detachable connector cannot be detachable, the lead wire of the wire harness is pulled and removed, so that an unreasonable force acts on the lead wire and the lead wire is disconnected or cut. Furthermore, since the lead wire of the wire harness is bent and forcibly inserted into a narrow wiring space, an excessive force acts on the lead wire, and this force pushes the connector in the lateral direction and causes contact failure. . In addition, since a large number of connectors are fixed to the end face, the distance between the connectors cannot be widened, and it is necessary to make the connectors small, which makes it difficult to stably connect the wire harness to the control box.

  The present invention has been made in order to solve the conventional problems as described above. The main object of the present invention is to provide a power supply device for a vehicle in which a connector can be easily and easily provided in a narrow wiring space and securely connected. Is to provide.

Means for Solving the Problems and Effects of the Invention

  The power supply device for a vehicle according to the present invention includes a battery case 41 in which a battery block 10 including a plurality of unit cells 11 is housed, and a control circuit that is connected to the battery case 41 via a wire harness 30 and a connector 35. And a control box 21 that houses the control box 21 and an outer case 42 that houses the control box 21. The connector 35 includes a detachable connector 35 </ b> A connected to one end of the wire harness 30, and a fixed connector 35 </ b> B that is detachably connected to the detachable connector 35 </ b> A and is fixed to the end surface 21 </ b> A of the control box 21. The outer case 42 is provided with a wiring space 46 for housing the wire harness 30 on the end surface 21A of the control box 21, and a wiring space 46 is provided with a detachable opening 47 for the connector 35 for detaching the detachable connector 35A to the fixed connector 35B. ing. The control box 21 uses the end face 21A formed by fixing the fixed connector 35B as an inclined face 21a inclined in the direction of widening the wiring space 46 toward the attachment / detachment opening 47, and the fixed connector 35B is fixed to the inclined face 21a. Yes.

  The above-described power supply device for vehicles has a feature that the connector for connecting the battery block to the control box can be reliably attached and detached while being provided easily and easily in a narrow wiring space. This is because the power supply device described above has the end face of the control box as an inclined surface and widens the wiring space toward the attachment / detachment opening. A wiring space with a wide attachment / detachment opening allows a connector to be attached / detached easily and efficiently from here. Further, the connector can be easily detached by attaching / detaching it in an oblique direction, instead of pulling the connector in the transverse direction in a narrow wiring space as in the prior art. In addition, as the inclined surface, the total length of the end face to which the fixed connector is fixed can be lengthened, so the distance between the connectors can be widened, and a large connector can be used more easily and reliably with less contact failure. Features that allow electrical connection are also realized. Further, since the connector can be easily and efficiently detached by grasping the connector, the lead wire of the wire harness is not pulled, and the adverse effect that the lead wire is disconnected or cut can be effectively prevented. In addition, since the angle at which the lead wire of the wire harness is bent can be reduced, a feature that an excessive force does not act on the lead wire and the connector is realized as compared with the conventional U-bending of the lead wire.

In the power supply device for a vehicle of the present invention, a plurality of battery blocks 10 are housed in a battery case 41 and a plurality of wire harnesses 30 connected to the plurality of battery blocks 10 are connected to the control box 21 via a plurality of connectors 35. Can be connected to.
The power supply device described above can connect a plurality of battery blocks to the control box simply and easily with a wire harness and a connector.

The power supply device for a vehicle according to the present invention includes a detachable plate 40C that closes the detachable opening 47 of the outer case 42, and the detachable plate 40C can be detachably fixed to the outer case 42.
In the above power supply device, the wiring space can be closed with the connector connected, and the wire harness can be arranged in the outer case.

In the vehicle power supply device of the present invention, the inclination angle (α) of the end face 21A can be set to 30 degrees to 60 degrees with respect to the bottom face 21B of the control box 21.
The power supply device described above can easily and easily attach and detach the fixed connector to and from the end surface where the fixed connector is fixed.

The vehicle power supply device of the present invention is provided in the wiring gap 48 by providing a wiring gap 48 for arranging the wire harness 30 between the top plate 42 a of the outer case 42 and the upper surface 21 C of the control box 21. The wire harness 30 can be bent and wired in the wiring space 46.
The above power supply device can guide the wire harness from the wiring gap to the wiring space and connect the battery block to the control box. In addition, the wire harness can be wired in a state where an excessive force does not act on the lead wire of the wire harness by reducing the angle at which the wire harness guided from the wiring gap to the wiring space is bent.

In the vehicle power supply device of the present invention, the lead wire constituting the wire harness 30 connected to the control box 21 via the connector 35 detects a voltage of the unit cell 11 of the battery block 10, and a voltage detection line 31. A temperature detection line 32 for detecting the temperature of the unit cell 11, a current detection line 33 for detecting the current of the battery block 10, and an external connection line 34 for connecting the control box 21 to an external device can be included.
The power supply apparatus described above can easily and easily connect the wiring harnesses of a large number of detection lines to the control box.

It is a schematic plan view which shows the internal structure of the conventional power supply device for vehicles. FIG. 2 is a vertical sectional view showing a state in which a wire harness is connected to a control box of the vehicle power supply device shown in FIG. 1. It is a perspective view of the power supply device for vehicles concerning one example of the present invention. It is the disassembled perspective view which looked at the power supply device for vehicles shown in FIG. 3 from the back side. It is a schematic sectional drawing of the power supply device for vehicles shown in FIG. It is a schematic plan view which shows the internal structure of the power supply device for vehicles shown in FIG. FIG. 7 is a vertical sectional view showing a state where a wire harness is connected to a control box of the vehicle power supply device shown in FIG. 6. It is a disassembled perspective view of a battery block. It is an expansion perspective view which shows the connection structure of a control box and a wire harness. It is a schematic plan view which shows the internal structure of the power supply device for vehicles concerning the other Example of this invention. FIG. 11 is a vertical sectional view showing a state where a wire harness is connected to a control box of the vehicle power supply device shown in FIG. 10. It is vertical sectional drawing which shows the state which connects a wire harness to the control box of the power supply device for vehicles concerning the other Example of this invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. However, the embodiment described below exemplifies a power supply device for a vehicle for embodying the technical idea of the present invention, and the present invention does not specify the power supply device as follows. In addition, the member shown by the claim is not what specifies the member of embodiment. In particular, the dimensions, materials, shapes, relative arrangements, and the like of the constituent members described in the embodiments are not intended to limit the scope of the present invention only to the description unless otherwise specified. It's just an example. Note that the size, positional relationship, and the like of the members shown in each drawing may be exaggerated for clarity of explanation. Furthermore, in the following description, the same name and symbol indicate the same or the same members, and detailed description thereof will be omitted as appropriate. Furthermore, each element constituting the present invention may be configured such that a plurality of elements are constituted by the same member and the plurality of elements are shared by one member, and conversely, the function of one member is constituted by a plurality of members. It can also be realized by sharing. In addition, the contents described in some examples and embodiments may be used in other examples and embodiments.

  The power supply device for a vehicle shown in FIGS. 3 to 7 is connected to a battery case 41 containing a battery block 10 composed of a plurality of unit cells 11, and to the battery case 41 via a wire harness 30 and a connector 35. A control box 21 having a built-in control circuit and an outer case 42 in which the control box 21 is housed.

  3 to 5 includes an outer case 40 that houses the battery block 10 and the control box 21, and the outer case 40 is divided to provide a battery case 41 and an outer case 42. The exterior case 40 in the figure includes a main body case 40A that opens upward, a cover plate 40B that closes the battery block 10 side of the opening of the main body case 40A, and a detachable plate 40C that closes the control box 21 side. A main body case 40A, a cover plate 40B, and a pair of end face plates 40D that close both end faces of the detachable plate 40C are configured.

  As shown in FIGS. 4 and 5, the cover plate 40 </ b> B and the detachment plate 40 </ b> C are combined to close the opening surface of the main body case 40 </ b> A. As shown in FIG. 5, the cover plate 40 </ b> B includes a horizontal plate 43 and a vertical plate 44 having a substantially L-shaped cross section. The horizontal plate 43 covers the battery block 10 side of the main body case 40A. The vertical plate 44 protrudes downward and is fixed to the bottom surface of the main body case 40A. The detaching plate 40C is fixed from above the cover plate 40B and covers the control box 21 side of the main body case 40A.

  In the outer case 40 described above, the main body case 40 </ b> A, the cover plate 40 </ b> B, and the end face plates 40 </ b> D at both ends constitute a battery case 41, and the battery block 1 is accommodated in the battery case 41. Further, in the outer case 40, the main case 40A, the vertical plate 44 of the cover plate 40B, the detaching plate 40C, and the end face plates 40D at both ends constitute an outer case 42, and the control box 21 is accommodated in the outer case 42. . In the illustrated power supply apparatus, the battery case 41 and the outer case 42 are integrated, but the battery case and the outer case can be provided separately.

  The battery case 41 of FIGS. 4 and 6 has four battery blocks 10 arranged side by side in the vertical and horizontal directions. As shown in FIG. 8, the battery block 10 is formed by laminating a plurality of unit cells 11 that are rectangular batteries with a separator 12 provided with a cooling gap therebetween. The battery block 10 has a structure in which a cooling gas is forcibly blown between the unit cells 11 for cooling. The separator 12 is made of plastic and has a shape that insulates the adjacent unit cells 11 and forms a cooling gap between the unit cells 11. Furthermore, the separator 12 connects the unit cells 11 on both surfaces with a fitting structure, and prevents the adjacent unit cells 11 from being displaced.

  The prismatic cell 11 is a lithium ion secondary battery. However, the battery cell may be any rechargeable secondary battery such as a nickel metal hydride battery or a nickel cadmium battery. The unit cell 11 shown in the figure is a quadrangle having a predetermined thickness, and positive and negative electrode terminals 13 protrude from both sides of the upper surface, and a safety valve 14 is provided at the center of the upper surface. The battery block 10 is connected in series with the electrode terminals 13 of the unit cells 11 to be stacked. The adjacent unit cells 11 are connected in series via the bus bar 15, or are connected in series by directly connecting the electrode terminals without going through the bus bar.

  Each battery block 10 is connected to a wire harness 30 of a voltage detection line 31 that detects the voltage of each unit cell 11. The wire harness 30 is connected to the electrode terminal 13 of the unit cell 11 via the bus bar 15 and inputs the voltage of each unit cell 11 to the control box 21. Furthermore, the battery block 10 is also connected to a wire harness 30 of a temperature detection line 32 that detects the temperature of the unit cell 11. The wire harness 30 is connected to a temperature sensor 16 that is thermally coupled to the unit cell 11. The temperature sensor 16 is thermally coupled to a specific unit cell 11 and transmits the temperature of the unit cell 11 constituting the battery block 10 to the control box 21.

  The power supply device of FIG. 6 has four battery blocks 10 arranged in the battery case 41. Therefore, the wire harness 30 of the voltage detection line 31 and the wire harness 30 of the temperature detection line 32 are connected to each battery block 10. ing.

  The wire harness 30 is connected to the control box 21 via the connector 35. As shown in FIG. 9, the connector 35 includes a detachable connector 35 </ b> A connected to one end of the wire harness 30 and a fixed connector 35 </ b> B fixed to the control box 21. The connector 35 is connected to a fixed connector 35B that removably connects the detachable connector 35A, and connects the wire harness 30 to the control box 21. Accordingly, the connector 35 includes a plurality of connection pins and elastic connection terminals that are elastically pressed to the connection pins to be electrically connected.

  Although the detachable connector 35A is not shown, a plurality of connection pins that are physically detachably connected to the fixed connector 35B are arranged and fixed to the insulating plastic block. The plurality of connection pins are electrically connected to the lead wires of the wire harness 30 by soldering or elastically sandwiching structures. Although not shown, the fixed connector 35B has a plurality of elastic connection terminals arranged at fixed positions on a base block formed of plastic in a shape that allows the plastic block to be detachably fitted. The elastic connection terminal is directly electrically connected to the circuit board 26 built in the control box 21 via the lead wire or without the lead wire.

  The connection pin is electrically connected to the elastic connection terminal in a state where the plastic block of the detachable connector 35A is coupled to the base block of the fixed connector 35B in a fixed structure with a fitting structure. In this state, the detachable connector 35A is electrically connected to the fixed connector 35B. The detachable connector 35A and the fixed connector 35B are formed in an elongated shape, and a plurality of connection pins and elastic connection terminals are arranged in the longitudinal direction. In the connector 35 having a larger number of connection pins and elastic connection terminals, the connection pins and the elastic connection terminals are arranged in two rows.

  The control box 21 incorporates a circuit board 26 that implements a protection circuit for the unit cells 11 constituting the battery block 10. The circuit board 26 detects the voltage, temperature and current of the unit cells 11 constituting the battery block 10 and controls the current for charging / discharging the unit cells 11 of the battery block 10 from the detected voltage, temperature and current. A control circuit, a protection circuit, a power transmission circuit, and a circuit for controlling on / off of the output of the power supply device are mounted. These circuits mounted on the circuit board 26 are connected to the battery block 10 and other circuits via the connector 35 and the wire harness 30.

  The power supply apparatus shown in FIGS. 4 to 7 stores the control box 21 in an outer case 42. Further, in the power supply apparatus shown in the figure, in addition to the control box 21, an external connection connector box 22, a fuse box 23, and an on / off control box 24 incorporating a power on / off control circuit are arranged in the outer case 42. The external connection connector box 22 incorporates a circuit that communicates a signal from the control box 21 to the vehicle side, and the fuse box 23 is connected in series with the battery block 10 and is blown by an overcurrent (not shown). The on / off control box 24 has a built-in contactor (not shown) that is a relay connected to the output side of the battery block 10. The contactor is kept in the on state when the vehicle is running, but is switched off in the event of an abnormality to cut off the output of the power supply device. The external connection connector box 22, the fuse box 23, and the on / off control box 24 are also connected to the control box 21 via the wire harness 30.

  The outer case 42 is provided with a wiring space 46 for housing the wire harness 30 on the end surface 21 </ b> A of the control box 21. In the outer case 42 of FIG. 7, a wiring space 46 is provided between the control box 21 and the external connection connector box 22. Since the wiring space 46 is a space where the wire harness 30 is accommodated and the connector 35 is attached / detached, an attaching / detaching opening 47 of the connector 35 is provided above. In the outer case 42, a hand or instrument is inserted through the attachment / detachment opening 47 and the connector 35 of the control box 21 is attached / detached.

  In order to easily detach the connector 35 in the wiring space 46, the control box 21 shown in FIGS. 7 and 9 widens the end space 21A fixing the fixed connector 35B toward the detachment opening 47. As the inclined surface 21a inclined in the direction, the fixed connector 35B is fixed to the inclined surface 21a. In the control box 21 of FIGS. 7 and 9, the inclination angle (α) of the end surface 21A with respect to the bottom surface 21B is set to 45 degrees. The control box 21 can be about 1.4 times as long as a conventional vertical end face. The inclination angle (α) of the end face 21A of the control box 21 can be 30 degrees to 60 degrees. An end face with an inclination angle (α) of 30 degrees can be doubled in length compared to a vertical end face, and an end face with an inclination angle (α) of 60 degrees is in comparison with a vertical end face. The total length can be about 1.2 times. The control box can reduce the angle of inclination (α) of the end face to increase the overall length, and the smaller the angle of inclination (α), the easier the connector can be attached and detached, but the board area must be reduced due to space constraints. It becomes difficult to mount the electrical components on the circuit board. On the other hand, if the inclination angle (α) of the end surface is too large, the end surface approaches the vertical surface and the total length is shortened, and all connectors cannot be easily detached. Therefore, the end face 21A of the control box 21 selects the inclination angle (α) at an optimum angle within the above-described range so that all the connectors 35 can be easily attached and detached.

  The control box 21 in FIG. 9 has two circuit boards 26 disposed therein. In order to connect the connectors 35 to the two circuit boards 26, the control box 21 shown in the figure has fixed connectors 35B arranged in two rows. The fixed connectors 35B arranged in two rows have four fixed connectors 35B arranged in the longitudinal direction and four fixed connectors 35B arranged in the second row.

  The fixed connector 35 </ b> B in the first row connects four sets of wire harnesses 30 connected to the four battery blocks 10. This wire harness 30 is the wire harness 30 of the voltage detection line 31. Since the power supply device of FIG. 6 includes four battery blocks 10, four fixed connectors 35 </ b> B are arranged in a row in the first row, and each fixed connector 35 </ b> B is connected to each battery block 10. The wire harness 30 of the connected voltage detection line 31 is connected.

  Further, five fixed connectors 35B are arranged in one row in the second row. The five fixed connectors 35B are, in order from the top, one that connects the wire harnesses 30 of the two temperature detection lines 32, one that connects to the wire harness 30 of one current detection line 33, and one It consists of what is connected to the on-off control box 24 and what is connected to one external connection connector box 22. Since the wire harness 30 of the temperature detection line 32 has fewer lead wires than the voltage detection line 31, the wire harness 30 is connected to the temperature sensors 16 of the two battery blocks 10 in one set. The wire harness 30 of the current detection line 33 has one end connected to the current sensor 25, the other end connected to the attachment / detachment connector 35A, and the attachment / detachment connector 35A connected to the fixed connector 35B of the control box 21. 25 is connected to the control box 21.

  The wire harness 30 connected to the on / off connection box 24 has one end connected to the on / off control box 24, the other end connected to the attachment / detachment connector 35A, and the attachment / detachment connector 35A connected to the fixed connector 35B of the control box 21. Thus, the on / off control box 24 is connected to the control box 21. The wire harness 30 of the external connection line 34 connected to the external connection connector box 22 has one end connected to the external connection connector box 22 and the other end connected to the attachment / detachment connector 35A. The attachment / detachment connector 35A is connected to the control box 21. The external connection connector box 22 is connected to the control box 21 by being connected to the fixed connector 35B.

  The power supply device shown in FIGS. 6 and 7 is connected to the wire harness 30 that is four sets of voltage detection lines 31 connected to the four battery blocks 10 and to the temperature sensor 16 of the two battery blocks 10. The wire harness 30 that is the set temperature detection line 32 is separated and pulled out to both end sides of the battery case 41. That is, of the four battery blocks 10 arranged in the battery case 41, two sets of voltage detection lines 31 connected to the two battery blocks 10 arranged on the same end face side and the two battery blocks 10. One set of temperature detection lines 32 connected to the temperature sensor 16 are drawn out to the opposite ends of the battery case 41 in opposite directions. The wire harness 30 composed of two sets of voltage detection lines 31 and one set of temperature detection lines 32 drawn to the opposite side is wired from both ends of the outer case 42 to the inside of the outer case 42, respectively. Are connected to the control box 21.

  In this power supply device, a plurality of wire harnesses 30 drawn to both ends of the battery case 41 are drawn inward from both ends of the outer case 42 where the control box 21 is arranged and guided to the wiring space 46 as shown in FIG. And connected to the control box 21. The wire harness 30 drawn into the outer case 42 from the side (the right side in FIG. 7) facing the end surface 21A that is the inclined surface 21a of the control box 21 is not greatly bent in the wiring space 46, and the inclined surface 21a of the control box 21 The detachable connector 35A can be inserted from the direction facing the connector and smoothly connected to the fixed connector 35B. Further, the wire harness 30 drawn into the outer case 42 from the side opposite to the end surface 21A that is the inclined surface 21a of the control box 21 (left side in FIG. 7) includes the top plate 42a of the outer case 42 and the upper surface 21C of the control box 21. Wiring is provided in a wiring gap 48 provided between the two. The wire harness 30 disposed in the wiring gap 48 is curved and guided to the wiring space 46 at the tip provided with the detachable connector 35A, and the detachable connector 35A is fitted and connected to the fixed connector 35B. Since the wire harness 30 guided from the wiring gap 48 to the wiring space 46 is connected to the fixed connector 35B provided on the inclined surface 21a, the bending angle is reduced and an excessive force is applied to the lead wire of the wire harness 30. The wire harness 30 can be wired in a state where it does not act.

  Furthermore, the power supply device shown in FIGS. 10 and 11 is connected to the wire harness 30 that is four sets of voltage detection lines 31 connected to the four battery blocks 10 and the temperature sensor 16 of the two battery blocks 10. The two sets of temperature detection lines 32 that are the wire harness 30 are drawn from the same end face side of the battery case 41. 10 and 11 pulls out six sets of wire harnesses 30 to the end surface side (the right side in FIG. 10) facing the end surface 21A that is the inclined surface 21a of the control box 21, and removes these wire harnesses 30 from the outside. The case 42 is drawn inward from one end of the case 42 and guided to the wiring space 46. Since the plurality of wire harnesses 30 guided to the wiring space 46 can be connected to the detachable connector 35A fixed at the tip by fitting into the fixed connector 35B from the direction facing the inclined surface 21a of the control box 21. The wire harness 30 can be smoothly connected to the fixed connector 35 </ b> B and connected to the control box 21 without being greatly bent in the wiring space 46. In particular, since this power supply device wires the wire harness 30 from the one end side of the outer case 42 and from the side where the control box 21 is not disposed, many wire harnesses 30 are placed above the control box 21. There is no need to provide a wiring gap for wiring. As a result, the control box 21 can be designed to be high, and a large number of connectors 35 can be more easily connected while making the inclined surface 21a of the control box 21 wider.

  Furthermore, as shown in FIG. 12, the power supply device can also be provided with inclined surfaces 21 a on the end surfaces 21 </ b> A at the opposite ends of the control box 21. As shown in FIG. 6, this power supply device is pulled inward from both ends of the outer case 42 in a structure in which the wire harness 30 composed of a plurality of voltage detection lines 31 and temperature detection lines 32 is pulled out to both ends of the battery case 41. The wire harness 30 to be connected can be connected to the fixed connector 35 </ b> B disposed on the inclined surfaces 21 a provided at both ends of the control box 21. In this structure, while the length of the wire harness 30 composed of the voltage detection line 31 and the temperature detection line 32 drawn from the battery block 10 is shortened, the detachable connector 35A is not greatly bent at the connection portion with the control box 21. It can be smoothly connected to the fixed connector 35B. Further, since the control box 21 is provided with the inclined surfaces 21a on the both end surfaces 21A, each of the inclined surfaces 21a can be designed smaller. For this reason, the cut amount of the upper end corner portion of the control box 21 can be reduced to sufficiently secure the size of the circuit board 26 accommodated in the control box 21, and the inclined surface 21 a is positioned above the wiring space 46. Further, the connection of the connector 35 can be facilitated.

  In the above embodiment, the fixed connector 35B disposed on the inclined surface 21a of the control box 21 is fixed in a posture orthogonal to the inclined surface 21a. Thereby, the attachment / detachment direction of the attachment / detachment connector 35 </ b> A to the fixed connector 35 </ b> B arranged in the control box 21 is set to be orthogonal to the inclined surface 21 a of the control box 21. However, the control box does not specify the direction of the fixed connector fixed to the inclined surface in the direction orthogonal to the inclined surface. Although the control box is not illustrated, the orientation of the fixed connector fixed to the inclined surface can be set to a slightly horizontal posture or a vertical posture from a posture orthogonal to the inclined surface. In the control box, for example, the direction of the fixed connector fixed to the inclined surface can be set to be perpendicular to the bottom surface. The control box detaches the detachable connector in the vertical direction with respect to the fixed connector arranged in the vertical posture. This structure is particularly characterized in that the detachable connector can be easily detached from the fixed connector disposed at the bottom of the wiring space. Furthermore, the control box can change the direction of the fixed connector fixed to the inclined surface according to the attachment / detachment location of the attachment / detachment connector. For example, the control box can change the orientation of the fixed connector fixed to the inclined surface in a stepwise manner from a vertical posture with respect to the bottom surface to an orthogonal posture with respect to the inclined surface from the lower side to the upper side of the inclined surface. That is, the control box changes the attaching / detaching direction of the attaching / detaching connector by changing the posture of the fixing connector in accordance with the attaching / detaching portion so that the wire harness is not greatly bent and the connector attaching / detaching operation is facilitated. be able to.

The above power supply apparatus is assembled as follows.
(1) The battery block 10 is fixed to the battery case 41 and the wire harness 30 is connected to the battery block 10.
(2) The control box 21, the external connector box 22, the fuse box 23, and the on / off control box 24 are fixed at fixed positions of the outer case 42, and the wiring space 46 is opposed to the end face 21 </ b> A of the control box 21. Provide.
(3) The detachable connector 35A is connected to the fixed connector 35B of the control box 21 in order from the bottom, and the control box 21 is connected to the battery block 10, the current sensor 25, and the on / off control box 24 via the wire harness 30. The external connection connector box 22 is connected.
(4) After the detachable connectors 35A of all the wire harnesses 30 are connected to the fixed connector 35B of the control box 21, the detachable plate is fixed and the detachable opening 47 of the outer case 42 is closed.

  In the above state, the lead wires of the wire harness 30 are accommodated in the wiring space 46 between the control box 21 and the outer case 42, bent in the wiring space 46, and the detachable connector 35A is connected to the fixed connector 35B.

  Further, in the power supply device of FIGS. 7, 11, and 12, the output lead 36 connected to the current sensor 25 is connected to the fuse box 23 in order to connect to the fuse of the fuse box 23.

DESCRIPTION OF SYMBOLS 10 ... Battery block 11 ... Unit cell 12 ... Separator 13 ... Electrode terminal 14 ... Safety valve 15 ... Bus bar 16 ... Temperature sensor 21 ... Control box 21A ... End surface
21a ... inclined surface
21B ... Bottom
21C ... Upper surface 22 ... External connection connector box 23 ... Fuse box 24 ... On / off control box 25 ... Current sensor 26 ... Circuit board 30 ... Wire harness 31 ... Voltage detection line 32 ... Temperature detection line 33 ... Current detection line 34 ... External connection line 35 ... Connector 35A ... Detachable connector
35B ... Fixed connector 36 ... Output lead 40 ... Exterior case 40A ... Body case
40B ... Cover plate
40C ... Desorption plate
40D ... End plate 41 ... Battery case 42 ... Outer case 42a ... Top plate 43 ... Horizontal plate 44 ... Vertical plate 46 ... Wiring space 47 ... Desorption opening 48 ... Wiring gap 91 ... Battery block 92 ... Control box 93 ... Wire harness 93A ... Voltage detection line
93B ... Temperature detection line
93C ... Current detection line
93D ... External connection line 94 ... Outer case 95 ... Connector 95A ... Removable connector
95B ... Fixed connector 96 ... Wiring space 97 ... Desorption opening

Claims (6)

A battery case (41) containing a battery block (10) composed of a plurality of unit cells (11), and connected to the battery case (41) via a wire harness (30) and a connector (35) A control box (21) containing a control circuit, and an outer case (42) containing the control box (21),
The connector (35) is a detachable connector (35A) connected to one end of the wire harness (30), the detachable connector (35A) is detachably connected, and the end face of the control box (21) ( 21A) and a fixed connector (35B)
The outer case (42) is provided with a wiring space (46) for housing the wire harness (30) on the end surface (21A) of the control box (21), and the wiring space (46) includes a detachable connector (35A). ) Is a power supply device for a vehicle provided with a detachable opening (47) of the connector (35) for detaching from the fixed connector (35B),
The control box (21) has an inclined surface (21a) that inclines the end surface (21A) formed by fixing the fixed connector (35B) in a direction that widens the wiring space (46) toward the attachment / detachment opening (47). As a power supply device for a vehicle, the fixed connector (35B) is fixed to the inclined surface (21a).   A plurality of battery blocks (10) are housed in the battery case (41), and a plurality of wire harnesses (30) connected to the plurality of battery blocks (10) are controlled via a plurality of connectors (35). The power supply device for vehicles according to claim 1 connected to a box (21).   The attachment / detachment plate (40C) for closing the attachment / detachment opening (47) of the outer case (42) is provided, and the attachment / detachment plate (40C) is detachably fixed to the outer case (42). The vehicle power supply described.   The vehicle power supply device according to any one of claims 1 to 3, wherein an inclination angle (α) of the end face (21A) is 30 degrees to 60 degrees with respect to a bottom face (21B) of the control box (21). .   A wiring gap (48) for arranging the wire harness (30) is provided on the top plate (42a) of the outer case (42) and the upper surface (21C) of the control box (21). 5. The vehicle power supply device according to claim 1, wherein the wire harness (30) disposed in the wiring is curved and disposed in the wiring space (46).   The lead wire constituting the wire harness (30) connected to the control box (21) via the connector (35) is a voltage detection line (31) for detecting the voltage of the unit cell (11) of the battery block (10). ), A temperature detection line (32) for detecting the temperature of the unit cell (11), a current detection line (33) for detecting the current of the battery block (10), and the control box (21) are connected to an external device. The vehicle power supply device according to any one of claims 1 to 5, further comprising an external connection line (34).

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