Service plug, in-vehicle power supply device, vehicle

Abstract

To provide a service plug which can be efficiently connected or blocked according to the priority in multiple power supply systems including a high-voltage battery, and to obtain an on-vehicle power supply device and a vehicle.SOLUTION: A service plug 24 detachably provided at a power supply circuit part 14 is provided with a first conduction part 42 and a second conduction part 44. When the service plug 24 is attached to the power supply circuit part 14, the second conduction part 44 establishes electrical continuity with a second connection terminal 36 provided at the power supply circuit part 14 to supply electric power to an auxiliary machine load after a first connection terminal 34 provided at the power supply circuit part 14 and the first conduction part 42 establish electric continuity therebetween to supply electric power to a drive device.SELECTED DRAWING: Figure 4

Description

Technical Field

[0001] The present invention relates to a service plug, an in-vehicle power supply device, and a vehicle.

Background Art

[0002] Patent Document 1 below discloses a technique related to a power circuit opening / closing device for opening and closing a power circuit having a plurality of power sources. In this prior art, a first power supply system composed of a first power source for supplying power for driving a vehicle, a second power supply system composed of a second power source for supplying power for driving low-voltage devices mounted on the vehicle, and a circuit breaker member that secures electrical connection of a plurality of power supply systems by an operation to a first state and shuts off the plurality of power supply systems at once by an operation to a second state.

[0003] Here, the circuit breaker member arranges a second relay circuit for shutting off the second power supply system close to a first relay circuit disposed in the first power supply system, and arranges relay contacts of the first relay circuit and the second relay circuit in parallel with respect to a connection terminal. Thereby, it is set such that a plurality of power supply systems are connected or shut off at once by an operation of the circuit breaker member.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] In the above prior art, when shutting off the relay circuit, the first relay circuit and the second relay circuit are connected or shut off at once.

[0006] In view of the above facts, an object of the present invention is to obtain a service plug, an in-vehicle power supply device, and a vehicle that can be efficiently connected or disconnected according to priority in a plurality of power supply systems including a high-voltage battery.

Means for Solving the Problems

[0007] The service plug according to the invention described in claim 1 is detachable from a power supply circuit section provided with a first power supply circuit for electrically connecting a high-voltage battery and a drive device powered by the high-voltage battery. The service plug body that is attached to the power supply circuit section and closes the first power supply circuit is electrically conductive with respect to a pair of first connection terminals each provided on the outer peripheral surface with a substantially cylindrical portion that is electrically conductive by contact. A pair of first conduction portions that are each provided on the inner peripheral surface with a substantially cylindrical portion that is electrically conductive by contact and that are electrically conductive with the pair of first connection terminals when the service plug body is attached to the power supply circuit section to close the first power supply circuit, and Auxiliary Power is supplied from the accessory battery and an ECU that detects an abnormality on the drive device side when it is determined that power is not being supplied to the drive device And the accessory load the auxiliary battery Is electrically conductive with respect to a pair of second connection terminals each provided on the outer peripheral surface with a substantially cylindrical portion that is electrically conductive by contact in a second power supply circuit for electrically connecting them. A pair of second conduction portions that are each provided on the inner peripheral surface with a substantially cylindrical portion that is electrically conductive by contact and that are electrically conductive with the pair of second connection terminals after the pair of first connection terminals and the pair of first conduction portions are electrically conductive when the service plug body is attached to the power supply circuit section to close the second power supply circuit. , when the service plug body is attached to the power supply circuit section, after the first power supply circuit that supplies power to the drive device is closed, the second power supply circuit that supplies power to the auxiliary load is closed 。

[0008] In the service plug according to the invention described in claim 1, the service plug body (service plug) is detachable from a power supply circuit section provided with a first power supply circuit for electrically connecting a high-voltage battery and a drive device powered by the high-voltage battery. When the service plug is attached to the power supply circuit section, the first power supply circuit is closed.

[0009] Here, the service plug is provided with a pair of first conduction parts and a pair of second conduction parts. The pair of first conduction parts are made to be conductible with respect to a pair of first connection terminals provided in a first power supply circuit that supplies power to the drive device. In the present invention, the first connection terminal has a substantially cylindrical shape, and the portion that can be made conductive by contact is provided on the outer peripheral surface. On the other hand, the first conduction portion has a substantially cylindrical shape, and the portion that can be made conductive by contact is provided on the inner peripheral surface Then, when the service plug is attached to the power supply circuit section, The portions provided on the inner peripheral surfaces of the pair of first conduction portions that can be made conductive by contact respectively contact the portions provided on the outer peripheral surfaces of the pair of first connection terminals that can be made conductive by contact the pair of first conduction parts are respectively conductible with the pair of first connection terminals, and the first power supply circuit forms a closed circuit.

[0010] On the other hand, the pair of second conduction parts are an ECU that detects an abnormality on the drive device side when it is determined that power is being supplied from the auxiliary battery and power is not being supplied to the drive device made to be conductible with respect to a pair of second connection terminals provided in a second power supply circuit that electrically connects the auxiliary machine load and the Auxiliary battery In the present invention, the second connection terminals are substantially cylindrical, and the portions that can be made conductive by contact are provided on the outer peripheral surface. On the other hand, the second conduction parts are substantially cylindrical, and the portions that can be made conductive by contact are provided on the inner peripheral surface. Then, when the service plug is attached to the power supply circuit section, after the pair of first connection terminals and the pair of first conduction parts are respectively conductible, the portions provided on the inner peripheral surfaces of the pair of second conduction parts that can be made conductive by contact respectively come into contact with the portions provided on the outer peripheral surfaces of the pair of second connection terminals that can be made conductive by contact, and are respectively conductible with the pair of second connection terminals, and the second power supply circuit forms a closed circuit. That is, in the present invention, when the service plug body is attached to the power supply circuit section, after the first power supply circuit that supplies power to the drive device is closed, the second power supply circuit that supplies power to the auxiliary load is closed

[0011] In the present invention, when the service plug is attached to the power supply circuit section, after the first power supply circuit that supplies power to the drive device forms a closed circuit, the second power supply circuit that supplies power to the auxiliary machine load forms a closed circuit. That is, in the present invention, when the service plug is attached to the power supply circuit section, after power is supplied to the drive device, power is supplied to the auxiliary machine load.

[0012] As a comparative example, when the service plug is attached to the power supply circuit unit, if power is supplied to the drive device after power is supplied to the auxiliary load, for example, in an electronic control unit (ECU; Electrical Control Unit) that controls the running of a vehicle as part of the auxiliary load, even though power is being supplied to the auxiliary load, it may be determined that power is not being supplied to the drive device, and this may be detected as an abnormality on the drive device side.

[0013] In contrast, in the present invention, as described above, when the service plug is attached to the power supply circuit unit, power is supplied to the auxiliary load after power is supplied to the drive device. Therefore, in a state where power is being supplied to the auxiliary load, power has already been supplied to the drive device, and the occurrence of problems such as in the comparative example is suppressed.

[0014] Note that the "auxiliary load" includes, in addition to the ECU, for example, lighting devices, air conditioners, power windows, audio systems, etc.

[0015] The service plug according to the invention described in claim 2 is the service plug according to the invention described in claim 1, wherein when the service plug body is removed from the power supply circuit unit, before the conduction state between the pair of first connection terminals and the pair of first conduction parts is released, the conduction states of the pair of second conduction parts with the pair of second connection terminals are respectively released.

[0016] In the service plug according to the invention described in claim 2, when the service plug is removed from the power supply circuit unit, before the conduction state between the pair of first connection terminals provided in the first power supply circuit for supplying power to the drive device and the pair of first conduction parts is released, the conduction states of the pair of second conduction parts with the pair of second connection terminals provided in the second power supply circuit for supplying power to the auxiliary load are respectively released.

[0017] In the present invention, when the service plug is removed from the power supply circuit section, before the first power supply circuit becomes an open circuit, the second power supply circuit becomes an open circuit. That is, in the present invention, when the service plug is removed from the power supply circuit section, before the power supply to the drive device is cut off, the power supply to the auxiliary load is cut off. In other words, when the service plug is removed from the power supply circuit section, first the power supply to the auxiliary load is cut off, and then the power supply to the drive device is cut off.

[0018] The service plug according to the invention described in claim 3 is detachable from a power supply circuit section provided with a first power supply circuit that electrically connects a high-voltage battery and a drive device powered by the high-voltage battery. The service plug body that is removed from the power supply circuit section and opens the first power supply circuit is electrically conductive with respect to a pair of first connection terminals provided on the first power supply circuit, each having a substantially cylindrical shape and a portion that can be made conductive by contact provided on the outer peripheral surface. A pair of first conduction portions that are each substantially cylindrical and can be made conductive by contact are provided on the inner peripheral surface, and when the service plug body is removed from the power supply circuit section, the conduction state with the pair of first connection terminals is released and the first power supply circuit is opened. Auxiliary Power is supplied from the machine battery and an ECU that detects an abnormality on the drive device side when it is determined that power is not being supplied to the drive device Auxiliary load and the auxiliary battery A pair of second connection terminals provided on a second power supply circuit that electrically connects are each made conductive with respect to a portion having a substantially cylindrical shape and a portion that can be made conductive by contact provided on the outer peripheral surface. A pair of second conduction portions that are each substantially cylindrical and can be made conductive by contact are provided on the inner peripheral surface. When the service plug body is removed from the power supply circuit section, before the conduction state between the pair of first connection terminals and the pair of first conduction portions is released, the conduction state with the pair of second connection terminals is released and the second power supply circuit is opened. It is configured to include , when the service plug body is removed from the power supply circuit section, before the first power supply circuit that supplies power to the drive device is opened, the second power supply circuit that supplies power to the auxiliary load is opened .

[0019] In the service plug according to the invention described in claim 3, the service plug body is detachable from a power supply circuit section provided with a first power supply circuit that electrically connects a high-voltage battery and a drive device powered by the high-voltage battery. When the service plug is removed from the power supply circuit section, the first power supply circuit becomes an open circuit.

[0020] Here, the service plug is provided with a pair of first conduction portions and a pair of second conduction portions. The pair of first conduction portions are made conductive with respect to a pair of first connection terminals provided in a first power supply circuit that supplies power to the drive device. . In the present invention, the first connection terminal has a substantially cylindrical shape, and the portion that can be made conductive by contact is provided on the outer peripheral surface. On the other hand, the first conduction portion has a substantially cylindrical shape, and the portion that can be made conductive by contact is provided on the inner peripheral surface When the service plug is removed from the power supply circuit section, The pair of first conduction portions the conduction states with the pair of first connection terminals are each released, and the first power supply circuit becomes an open circuit.

[0021] Also, the pair of second conduction portions are an ECU that detects an abnormality on the drive device side when it is determined that power is being supplied from the auxiliary battery and power is not being supplied to the drive device made conductive with respect to a pair of second connection terminals provided in a second power supply circuit that electrically connects an auxiliary load and the Auxiliary battery In the present invention, the second connection terminals are substantially cylindrical, and the portions that become conductive by contact are provided on the outer peripheral surface. On the other hand, the second conduction portions are substantially cylindrical, and the portions that become conductive by contact are provided on the inner peripheral surface. When the service plug is removed from the power supply circuit section, before the conduction state between the pair of first connection terminals and the pair of first conduction portions is released, the conduction states between the pair of second conduction portions and the pair of second connection terminals are each released, and the second power supply circuit becomes an open circuit. That is, in the present invention, when the service plug body is removed from the power supply circuit section, before the first power supply circuit that supplies power to the drive device is opened, the second power supply circuit that supplies power to the auxiliary load is opened

[0022] In the present invention, when the service plug is removed from the power supply circuit section, before the first power supply circuit that supplies power to the drive device becomes an open circuit, the second power supply circuit that supplies power to the auxiliary load becomes an open circuit. That is, when the service plug is removed from the power supply circuit section, the power supply to the auxiliary load is cut off first, and then the power supply to the drive device is cut off.

[0023] As a comparative example, when the service plug is removed from the power supply circuit unit, if the power supply to the auxiliary load is cut off after the power supply to the drive device is cut off, in the ECU, there are cases where it is determined that power is not supplied to the drive device even though power is being supplied to the auxiliary load.

[0024] On the other hand, in the present invention, as described above, when the service plug is removed from the power supply circuit unit, the power supply to the drive device is cut off before and the power supply to the auxiliary load is cut off, so in the ECU, the occurrence of the problem of being determined that power is not supplied to the drive device even though power is being supplied to the auxiliary load is suppressed.

[0025] The service plug according to the invention described in claim 4 is the service plug according to the invention described in claim 3, wherein when the service plug body is attached to the power supply circuit unit, after the pair of first connection terminals and the pair of first conduction parts are conducted, the pair of second conduction parts are respectively conducted with the pair of second connection terminals.

[0026] In the service plug according to the invention described in claim 4, when the service plug is attached to the power supply circuit unit, after a pair of first connection terminals provided in a first power supply circuit that supplies power to the drive device and a pair of first conduction parts are conducted, the pair of second conduction parts are respectively conducted with a pair of second connection terminals provided in a second power supply circuit that supplies power to the auxiliary load.

[0027] In the present invention, when the service plug is attached to the power supply circuit unit, after the first power supply circuit becomes a closed circuit, the second power supply circuit becomes a closed circuit. That is, in the present invention, when the service plug is attached to the power supply circuit unit, after power is supplied to the drive device, power is supplied to the auxiliary load.

[0028] The in-vehicle power supply device according to the invention described in claim 5 includes the power supply circuit section described in claim 1 or claim 2, and the service plug described in claim 1 or claim 2. When the service plug is attached to the power supply circuit section, after the pair of first connection terminals and the pair of first conduction parts are electrically connected, the pair of second conduction parts are electrically connected to the pair of second connection terminals respectively.

[0029] The in-vehicle power supply device according to the invention described in claim 5 includes a power supply circuit section and a service plug. When the service plug is attached to the power supply circuit section, after a pair of first connection terminals provided on the power supply circuit section side and a pair of first conduction parts provided on the service plug side are electrically connected, a pair of second conduction parts provided on the service plug side are electrically connected to a pair of second connection terminals provided on the power supply circuit section side respectively.

[0030] That is, in the present invention, when the service plug is attached to the power supply circuit section, after the first power supply circuit for supplying power to the drive device is closed, the second power supply circuit for supplying power to the auxiliary machine load is closed, and after power is supplied to the drive device, power is supplied to the auxiliary machine load.

[0031] The in-vehicle power supply device according to the invention described in claim 6 includes the power supply circuit section described in claim 3 or claim 4, and the service plug described in claim 3 or claim 4. When the service plug is removed from the power supply circuit section, before the conduction state between the pair of first connection terminals and the pair of first conduction parts is released, the conduction state between the pair of second conduction parts and the pair of second connection terminals is released respectively.

[0032] The in-vehicle power supply device according to the invention described in claim 6 includes a power supply circuit section and a service plug. When the service plug is removed from the power supply circuit section, before the conduction state between a pair of first connection terminals provided on the power supply circuit section side and a pair of first conduction parts provided on the service plug side is released, the conduction state between a pair of second conduction parts provided on the service plug side and a pair of second connection terminals provided on the power supply circuit section side is released respectively.

[0033] That is, in the present invention, when the service plug is removed from the power supply circuit unit, before the first power supply circuit becomes an open circuit, the second power supply circuit becomes an open circuit, and before the power supply to the drive device is cut off, the power supply to the auxiliary load is cut off.

[0034] The in-vehicle power supply device according to the invention described in claim 7 is the in-vehicle power supply device according to claim 5 or claim 6, and includes a first contact portion formed on the first connection terminal and capable of coming into contact with and conducting with a third contact portion formed on the first conduction portion, and a second contact portion formed on the second connection terminal and capable of coming into contact with and conducting with a fourth contact portion formed on the second conduction portion. The second contact portion is set to be deeper in the mounting direction in which the service plug is mounted on the power supply circuit unit than the first contact portion.

[0035] In the in-vehicle power supply device according to the invention described in claim 7, a first contact portion is formed on the first connection terminal, and the first contact portion is capable of coming into contact with and conducting with a third contact portion formed on the first conduction portion. Also, a second contact portion is formed on the second connection terminal, and the second contact portion is capable of coming into contact with and conducting with a fourth contact portion formed on the second conduction portion.

[0036] Here, in the present invention, the second contact portion is set to be deeper in the mounting direction in which the service plug is mounted on the power supply circuit unit than the first contact portion. Thereby, when the service plug is mounted on the power supply circuit unit, after the third contact portion of the first conduction portion comes into contact with the first contact portion of the first connection terminal and the first connection terminal and the first conduction portion are conducted, the fourth contact portion of the second conduction portion comes into contact with the second contact portion of the second connection terminal and the second connection terminal and the second conduction portion are conducted.

[0037] That is, in the present invention, when the service plug is mounted on the power supply circuit unit, after the first connection terminal and the first conduction portion are conducted to make the first power supply circuit a closed circuit and power is supplied to the drive device, the second connection terminal and the second conduction portion are conducted to make the second power supply circuit a closed circuit and power is supplied to the auxiliary load.

[0038] The in-vehicle power supply device according to the invention described in claim 8 is the in-vehicle power supply device according to claim 5 or claim 6, and includes a first contact portion formed on the first connection terminal and capable of contacting and conducting with a third contact portion formed on the first conduction portion, and a second contact portion formed on the second connection terminal and capable of contacting and conducting with a fourth contact portion formed on the second conduction portion. The fourth contact portion is set to be Front in the mounting direction in which the service plug is mounted on the power supply circuit portion with respect to the third contact portion.

[0039] In the in-vehicle power supply device according to the invention described in claim 8, a first contact portion is formed on the first connection terminal, and the first contact portion is capable of contacting and conducting with a third contact portion formed on the first conduction portion. Further, a second contact portion is formed on the second connection terminal, and the second contact portion is capable of contacting and conducting with a fourth contact portion formed on the second conduction portion.

[0040] Here, in the present invention, the fourth contact portion is set to be Front in the mounting direction in which the service plug is mounted on the power supply circuit portion with respect to the third contact portion. Thus, when the service plug is mounted on the power supply circuit portion, after the third contact portion of the first conduction portion contacts the first contact portion of the first connection terminal and the first connection terminal and the first conduction portion are conducted, the fourth contact portion of the second conduction portion contacts the second contact portion of the second connection terminal and the second connection terminal and the second conduction portion are conducted.

[0041] That is, in the present invention, when the service plug is mounted on the power supply circuit portion, after the first connection terminal and the first conduction portion are conducted to form a closed circuit for the first power supply circuit and power is supplied to the driving device, the second connection terminal and the second conduction portion are conducted to form a closed circuit for the second power supply circuit and power is supplied to the auxiliary load.

[0042] The vehicle according to the invention described in claim 9 is equipped with the in-vehicle power supply device according to any one of claims 5 to 8.

Advantages of the Invention

[0043] As described above, the service plug, in-vehicle power supply device, and vehicle according to the present invention have an excellent effect that they can be efficiently connected or disconnected according to the priority in a plurality of power supply systems including a high-voltage battery.

Brief Description of the Drawings

[0044]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Figure 11

Embodiments for Carrying Out the Invention

[0045] Hereinafter, an in-vehicle power supply device including a service plug according to the present embodiment will be described with reference to the drawings.

[0046] (Configuration of In-Vehicle Power Supply Device) First, the configuration of an in-vehicle power supply device including a service plug according to an embodiment of the present invention will be described.

[0047] FIG. 1 shows a schematic block diagram of an in-vehicle power supply device 12 including a service plug 24 according to the present embodiment. As shown in FIG. 1, a power supply circuit unit 14 is provided in the in-vehicle power supply device 12 mounted on the vehicle 10. The power supply circuit unit 14 is provided with a first power supply circuit 16 and a second power supply circuit 18. The first power supply circuit 16 electrically connects the high-voltage battery 20 and a drive device (not shown) to which power is supplied from the high-voltage battery 20. On the other hand, the second power supply circuit 18 electrically connects an accessory battery 22, which is so-called a 12V battery, and an accessory load (not shown) to which power is supplied from the accessory battery 22. Note that an ECU is cited as one of the accessory loads.

[0048] A service plug 24 is detachably provided in the power supply circuit unit 14. The power supply circuit unit 14 is provided on the vehicle 10 side. As shown in FIGS. 3(A) and (B), for example, it has a box shape, and a connected portion 26 is provided in the power supply circuit unit 14. Note that FIG. 3(A) is a schematic side view showing a state where the service plug 24 is removed from the power supply circuit unit 14, and (B) is a schematic plan view.

[0049] On the other hand, the service plug 24, for example, has a box shape, and a connection portion 28 connected to the connected portion 26 is provided in the service plug 24. In addition, the internal dimensions of the service plug 24 are set to be larger than the external dimensions of the power supply circuit unit 14. In a state where the service plug 24 is attached (fitted) to the power supply circuit unit 14, the power supply circuit unit 14 is covered by the service plug 24.

[0050] The service plug 24 is provided with shaft portions 30 on a pair of side walls 24A respectively. A substantially U-shaped operation lever 32 is attached to the shaft portion 30, and the operation lever 32 is rotatable about the shaft portion 30.

[0051] Here, cam grooves (not shown) are formed in the side walls 24A of the service plug 24. A pin (not shown) protruding from the side wall of the power supply circuit portion 14 can be inserted into the cam grooves in a state where the operation lever 32 is laid down. With the pin of the power supply circuit portion 14 inserted into the cam grooves of the service plug 24, the service plug 24 is engaged with the power supply circuit portion 14, and from this state, the laid-down operation lever 32 is raised (see FIGS. 2(A) and (B)).

[0052] In a state where the service plug 24 is engaged with the power supply circuit portion 14, a pin is arranged on the movement locus of the operation lever 32. For this reason, when the laid-down operation lever 32 is raised, the service plug 24 moves along the shape of the cam groove with reference to the pin via the operation lever 32. At that time, the service plug 24 moves so as to be drawn into the power supply circuit portion 14 side, the service plug 24 fits into the power supply circuit portion 14, and the connection portion 28 of the service plug 24 is connected to the connected portion 26 of the power supply circuit portion 14.

[0053] On the other hand, as shown in FIGS. 3(A) and (B), by laying down the raised operation lever 32, the service plug 24 moves in a direction to release the fitting state with the power supply circuit portion 14 along the shape of the cam groove with reference to the pin. In a state where the operation lever 32 is laid down, the operation lever 32 moves to a position where it does not interfere with the cam groove. For this reason, the service plug 24 can be removed from the power supply circuit portion 14 along the shape of the cam groove with reference to the pin.

[0054] In this way, by tilting the upright operation lever 32, the state in which the service plug 24 is engaged with the power supply circuit unit 14 is released, and the state in which the connection portion 28 of the service plug 24 is connected to the connected portion 26 of the power supply circuit unit 14 is released. Then, by pulling out the operation lever 32, the service plug 24 can be removed from the power supply circuit unit 14. Note that for the fitting relationship using pins, cam grooves, and operation levers in the power supply circuit unit 14 and the service plug 24, well-known techniques are applied.

[0055] By the way, as shown in FIG. 1, a part of the first power supply circuit 16 and the second power supply circuit 18 is provided in the service plug 24. As shown in FIG. 2(B), when the service plug 24 is attached to the power supply circuit unit 14, the first power supply circuit 16 and the second power supply circuit 18 are closed circuits. On the other hand, as shown in FIG. 3(B), when the service plug 24 is removed from the power supply circuit unit 14, the first power supply circuit 16 and the second power supply circuit 18 are open circuits.

[0056] FIG. 4 shows the connected portion 26 of the power supply circuit unit 14 and the connection portion 28 of the service plug 24. A pair of first connection terminals 34 provided in the first power supply circuit 16 and a pair of second connection terminals 36 provided in the second power supply circuit 18 are respectively provided in the connected portion 26 of the power supply circuit unit 14.

[0057] For example, the first connection terminal 34 and the second connection terminal 36 are formed in a substantially cylindrical shape. A first contact portion 38 is formed on the outer peripheral surface of the first connection terminal 34 at the tip of the first connection terminal 34, and a second contact portion 40 is formed on the outer peripheral surface of the second connection terminal 36 at the tip of the second connection terminal 36.

[0058] On the other hand, a pair of first conduction portions 42 that are conductively connected to the pair of first connection terminals 34 respectively and a pair of second conduction portions 44 that are conductively connected to the pair of second connection terminals 36 respectively are provided in the connection portion 28 of the service plug 24.

[0059] For example, the first conduction part 42 and the second conduction part 44 are formed in a substantially cylindrical shape. The first connection terminal 34 can be inserted into the first conduction part 42, and the second connection terminal 36 can be inserted into the second conduction part 44.

[0060] Also, at the tip of the first conduction part 42, a third contact part 46 is formed on the inner peripheral surface of the first conduction part 42. The third contact part 46 is configured to be in contact with and conduct with the first contact part 38 formed on the first connection terminal 34 when the first connection terminal 34 is inserted into the first conduction part 42. Further, at the tip of the second conduction part 44, a fourth contact part 48 is formed on the inner peripheral surface of the second conduction part 44. The fourth contact part 48 is configured to be in contact with and conduct with the second contact part 40 formed on the second connection terminal 36 when the second connection terminal 36 is inserted into the second conduction part 44.

[0061] Here, in the present embodiment, the first conduction part 42 and the second conduction part 44 provided on the service plug 24 have the same length along the mounting direction (arrow A direction) in which the service plug 24 is mounted on the power supply circuit part 14. The third contact part 46 of the first conduction part 42 and the fourth contact part 48 of the second conduction part 44 are formed at the same position along the mounting direction of the service plug 24.

[0062] On the other hand, the second connection terminal 36 provided on the power supply circuit part 14 is formed to be shorter in length than the first connection terminal 34, and the second contact part 40 of the second connection terminal 36 provided on the power supply circuit part 14 is set to be deeper in the mounting direction of the service plug 24 than the first contact part 38 of the first connection terminal 34.

[0063] (Functions and Effects of In-Vehicle Power Supply Device) Next, the functions and effects of the in-vehicle power supply device provided with the service plug according to the present embodiment will be described.

[0064] As shown in FIGS. 2(A) and 2(B), a service plug 24 detachably provided to the power supply circuit unit 14 is provided with a pair of first conduction parts 42 and a pair of second conduction parts 44. When the service plug 24 is attached to the power supply circuit unit 14, the pair of first conduction parts 42 are respectively conducted with the pair of first connection terminals 34 provided to the power supply circuit unit 14, closing the first power supply circuit 16 and supplying power to the drive device.

[0065] On the other hand, when the service plug 24 is attached to the power supply circuit unit 14, after the pair of first conduction parts 44 are respectively conducted with the pair of first connection terminals 34 and the pair of first conduction parts 42, the pair of second conduction parts 44 are respectively conducted with the pair of second connection terminals 36 provided to the power supply circuit unit 14, closing the second power supply circuit 18 and supplying power to the auxiliary machine load including the ECU.

[0066] That is, in the present embodiment, when the service plug 24 is attached to the power supply circuit unit 14, after the first power supply circuit 16 that supplies power to the drive device is closed, the second power supply circuit 18 that supplies power to the auxiliary machine load is closed, and after power is supplied to the drive device, power is supplied to the auxiliary machine load.

[0067] Specifically, as shown in FIG. 4, in the present embodiment, the third contact part 46 and the fourth contact part 48 provided on the service plug 24 side are formed at the same position along the attachment direction (arrow A direction) in which the service plug 24 is attached to the power supply circuit unit 14. On the other hand, the second contact part 40 provided on the power supply circuit unit 14 side is set to be deeper in the attachment direction of the service plug 24 than the first contact part 38.

[0068] Thereby, as shown in FIG. 5, in a state where the third contact part 46 of the first conduction part 42 contacts the first contact part 38 of the first connection terminal 34 and the first connection terminal 34 and the first conduction part 42 are conducted, the fourth contact part 48 of the second conduction part 44 and the second contact part 40 of the second connection terminal 36 are separated and the second connection terminal 36 and the second conduction part 44 are not conducted. That is, power is supplied to the drive device but not to the auxiliary machine load.

[0069] As a comparative example, for instance, although not shown in the drawings, when the service plug 24 is attached to the power supply circuit unit 14, if the first power supply circuit 16 becomes a closed circuit after the second power supply circuit 18 becomes a closed circuit, power is supplied to the auxiliary load first and then to the drive device. Therefore, in the ECU, it may be determined that power is not being supplied to the drive device, and this may be detected as an abnormality on the drive device side.

[0070] On the other hand, in the present embodiment, as shown in FIGS. 5 and 6, when the service plug 24 is attached to the power supply circuit unit 14, the second power supply circuit 18 becomes a closed circuit after the first power supply circuit 16 becomes a closed circuit. Therefore, in the present embodiment, power is supplied to the auxiliary load after power is supplied to the drive device. Thus, when power is supplied to the auxiliary load, power has already been supplied to the drive device, and the occurrence of problems such as those in the comparative example is suppressed.

[0071] On the other hand, as shown in FIGS. 3(A), (B), and 5, when the service plug 24 is removed from the power supply circuit unit 14, before the conduction state between the pair of first connection terminals 34 provided in the first power supply circuit 16 and the pair of first conduction portions 42 is released, the conduction states of the pair of second conduction portions 44 with the pair of second connection terminals 36 provided in the second power supply circuit 18 are each released.

[0072] That is, in the present embodiment, when the service plug 24 is removed from the power supply circuit unit 14, the second power supply circuit 18 becomes an open circuit before the first power supply circuit 16 becomes an open circuit. Therefore, in the present embodiment, when the service plug 24 is removed from the power supply circuit unit 14, the power supply to the auxiliary load is cut off before the power supply to the drive device is cut off. In other words, when the service plug 24 is removed from the power supply circuit unit 14, the power supply to the auxiliary load is cut off first, and then the power supply to the drive device is cut off.

[0073] Therefore, in this embodiment, since the power supply to the drive device is cut off after the power supply to the auxiliary load is cut off, a situation where power is supplied to the auxiliary load but not to the drive device does not occur. For this reason, the occurrence of problems such as in the comparative example is suppressed.

[0074] As described above, in this embodiment, when the service plug 24 is attached to the power supply circuit unit 14, after the first power supply circuit 16 becomes a closed circuit, the second power supply circuit 18 becomes a closed circuit, so that power is supplied to the auxiliary load after power is supplied to the drive device. It is set to be. Also, when the service plug 24 is removed from the power supply circuit unit 14, the second power supply circuit 18 becomes an open circuit before the first power supply circuit 16 becomes an open circuit, so that the power supply to the auxiliary load is cut off before the power supply to the drive device is cut off. It is set to be.

[0075] Thereby, in this embodiment, in the in-vehicle power supply device 12 having a plurality of power supply systems including a high-voltage battery, the plurality of power supply systems can be efficiently connected or disconnected according to the priority.

[0076] Also, in this embodiment, a second power supply circuit 18 for supplying power to the auxiliary load is provided at the connection portion 26 of the power supply circuit unit 14 provided with the first power supply circuit 16 for supplying power to the drive device. Thereby, in this embodiment, by operating the operation lever 32 of the service plug 24, for example, the connection portion 28 of the service plug 24 is connected (or disconnected) to the connection portion 26 of the power supply circuit unit 14, and the first power supply circuit 16 and the second power supply circuit 18 are closed (or opened). It can be a circuit).

[0077] That is, in this embodiment, by simply operating the operation lever 32 of the service plug 24, power can be supplied (or cut off) to the drive device and the auxiliary load, so that the workability can be improved as compared with the case of operating the drive device and the auxiliary load respectively.

[0078] In addition, in this embodiment, when power is supplied to the auxiliary load, the driving device is already in a state where power has been supplied. Thus, a situation where power is not supplied to the driving device despite power being supplied to the auxiliary load is unlikely to occur. Therefore, according to this embodiment, in the service plug 24, the interlock switch 49 (see FIG. 1) for detecting a state where the first power supply circuit 16 is not closed is not necessarily required.

[0079] As described above, in this embodiment, when the service plug 24 is attached to the power supply circuit unit 14, power is supplied to the auxiliary load after power is supplied to the driving device. Also, when the service plug 24 is removed from the power supply circuit unit 14, the power supply to the auxiliary load is cut off before the power supply to the driving device is cut off. However, the configuration is not limited to this as long as such a relationship is maintained.

[0080] (Modification Example) Hereinafter, a modification example of the above embodiment will be described.

[0081] In the embodiment shown in FIG. 4, the first conduction part 42 and the second conduction part 44 provided on the service plug 24 are the same length along the attachment direction (arrow A direction) of the service plug 24. The third contact part 46 of the first conduction part 42 and the fourth contact part 48 of the second conduction part 44 are formed at the same position along the attachment direction of the service plug 24. On the other hand, the second connection terminal 36 provided on the power supply circuit unit 14 is shorter in length than the first connection terminal 34, and the second contact part 40 of the second connection terminal 36 provided on the power supply circuit unit 14 is set to be deeper in the attachment direction of the service plug 24 than the first contact part 38 of the first connection terminal 34.

[0082] In contrast, in Modification Example 1, as shown in FIG. 7, the first connection terminal 52 and the second connection terminal 54 provided on the power supply circuit unit 50 are formed to be the same length, and the second contact part 56 of the second connection terminal 54 is set to be deeper in the attachment direction (arrow A direction) of the service plug 24 than the first contact part 58 of the first connection terminal 52.

[0083] As a result, as shown in FIG. 8, in a state where the third contact portion 46 of the first conduction portion 42 contacts the first contact portion 58 of the first connection terminal 52 and the first connection terminal 52 and the first conduction portion 42 are electrically connected, the second contact portion 56 of the second connection terminal 54 is separated from the fourth contact portion 48 of the second conduction portion 44.

[0084] Therefore, in the present embodiment, when the service plug 24 is attached to the power supply circuit unit 14, after the first contact portion 58 of the first connection terminal 52 and the third contact portion 46 of the first conduction portion 42 are electrically connected and the first power supply circuit 16 becomes a closed circuit, as shown in FIG. 9, the fourth contact portion 48 of the second conduction portion 44 and the second contact portion 56 of the second connection terminal 54 are electrically connected and the second power supply circuit 18 becomes a closed circuit. In this way, it may be possible to supply power to the auxiliary load after supplying power to the drive device.

[0085] In the above embodiment, the position of the second contact portion 40 of the second connection terminal 54 provided in the power supply circuit unit 50 is set to be deeper in the mounting direction of the service plug 24 than the first contact portion 38 of the first connection terminal 34. However, although not shown, the position of the fourth contact portion 48 of the second conduction portion 44 provided in the service plug 24 may be set to be in front of the third contact portion 46 of the first conduction portion 42 in the mounting direction of the service plug 24.

[0086] Also, in the embodiment shown in FIGS. 2(A) and (B), the power supply circuit unit 14 is provided with the first connection terminal 52 of the first power supply circuit 16 for supplying power to the drive device and the second connection terminal 54 of the second power supply circuit 18 for supplying power to the auxiliary load, and the service plug 24 is provided with the first conduction portion 42 that conducts with the first connection terminal 52 and the second conduction portion 44 that conducts with the second connection terminal 54, but the present invention is not limited to this.

[0087] For example, as a modification 2, in the embodiment shown in FIGS. 10(A) and (B), a high-voltage circuit unit 62 provided with a first power supply circuit 60 for supplying power to the drive device and a low-voltage circuit unit 66 provided with a second power supply circuit 64 for supplying power to the auxiliary load are provided separately.

[0088] Furthermore, the low-voltage circuit section 66 is provided on the front side of the service plug 68 in the mounting direction, relative to the high-voltage circuit section 62. Also, a sub-plug 72 is provided on the gripping portion 70A of the operation lever 70. A second conduction portion 80 that conducts with a second connection terminal 78 provided on the connected portion 76 of the second power supply circuit 64 is provided on the connection portion 74 of the sub-plug 72, and the sub-plug 72 is configured to be detachable from the low-voltage circuit section 66.

[0089] As shown in FIGS. 11(A) and 11(B), in a state where the operation lever 70 is tilted horizontally, the sub-plug 72 is provided on the gripping portion 70A of the operation lever 70 with the connection portion 74 for connecting to the connected portion 76 of the low-voltage circuit section 66 facing upward. The low-voltage circuit section 66 is disposed on the movement locus of the sub-plug 72. Therefore, when the operation lever 70 is raised, the service plug 68 is connected to the high-voltage circuit section 62 and the sub-plug 72 is connected to the low-voltage circuit section 66.

[0090] Here, as described above, the low-voltage circuit section 66 is provided on the front side of the service plug 68 in the mounting direction, relative to the high-voltage circuit section 62. However, when the service plug 68 is mounted on the high-voltage circuit section 62, it is set such that the sub-plug 72 is connected to the low-voltage circuit section 66 after the service plug 68 is connected to the high-voltage circuit section 62 by a cam mechanism (not shown) provided on the service plug 68. Thereby, power is supplied to the auxiliary load after power is supplied to the drive device.

[0091] On the other hand, when removing the service plug 24 from the high-voltage circuit section 62, the raised operation lever 32 is tilted horizontally. However, since the low-voltage circuit section 66 is provided on the front side of the service plug 68 in the mounting direction, relative to the high-voltage circuit section 62, the state where the sub-plug 72 is connected to the low-voltage circuit section 66 is released before the state where the service plug 68 is connected to the high-voltage circuit section 62 is released. That is, the power supply to the drive device is cut off after the power supply to the auxiliary load is cut off.

[0092] As described above, one embodiment of the present invention has been explained. However, the present invention is not limited to the above, and it goes without saying that various modifications other than the above can be made and implemented within the scope not departing from the gist thereof.

Explanation of Signs

[0093] 10 Vehicle 12 In-vehicle power supply device 14 Power feeding circuit section 16 First power feeding circuit 18 Second power feeding circuit 20 High-voltage battery 22 Auxiliary machine battery 24 Service plug (service plug main body) 34 First connection terminal 36 Second connection terminal 38 First contact portion 40 Second contact portion 42 First conduction portion 44 Second conduction portion 46 Third contact portion 48 Fourth contact portion 50 Power feeding circuit section 52 First connection terminal 54 Second connection terminal 56 Second contact portion 58 First contact portion 60 First power feeding circuit 62 High-voltage circuit section (power feeding circuit section) 64 Second power feeding circuit 66 Low-voltage circuit section (power feeding circuit section) 68 Service plug 72 Sub-plug (service plug) 78 Second connection terminal 80 Second conduction portion

Claims

1. A power supply plug body that is detachable from a power supply circuit unit provided with a first power supply circuit for electrically connecting a high-voltage battery and a drive device supplied with power from the high-voltage battery. When the power supply plug body is attached to the power supply circuit unit and closes the first power supply circuit, It is made conductive with a pair of first connection terminals provided on the outer peripheral surface of the first power supply circuit, each having a substantially cylindrical shape and being made conductive by contact. A pair of first conduction parts that are made conductive by contact and are provided on the inner peripheral surface of the substantially cylindrical shape. When the service plug body is attached to the power supply circuit unit, it conducts with the pair of first connection terminals respectively and closes the first power supply circuit, A pair of second conduction parts that are provided in a second power supply circuit for electrically connecting an auxiliary load including an ECU that detects an abnormality on the drive device side when it is determined that power is supplied from the auxiliary battery and power is not supplied to the drive device, and the auxiliary battery. The parts having a substantially cylindrical shape and being made conductive by contact are provided on the outer peripheral surface of the pair of second connection terminals respectively. When the service plug body is attached to the power supply circuit unit, after the pair of first connection terminals and the pair of first conduction parts are respectively conducted, the pair of second connection terminals and the pair of second conduction parts are respectively conducted to close the second power supply circuit, It is configured to include, A service plug in which when the service plug body is attached to the power supply circuit unit, after the first power supply circuit for supplying power to the drive device is closed, the second power supply circuit for supplying power to the auxiliary load is closed.

2. The service plug according to claim 1, wherein when the service plug body is removed from the power supply circuit unit, before the conduction state between the pair of first connection terminals and the pair of first conduction parts is released, the conduction state between the pair of second conduction parts and the pair of second connection terminals is respectively released.

3. A service plug body that is detachable from a power supply circuit unit provided with a first power supply circuit for electrically connecting a high-voltage battery and a drive device supplied with power from the high-voltage battery. When the service plug body is removed from the power supply circuit unit and opens the first power supply circuit, A pair of first connection terminals provided on the first power supply circuit and having substantially cylindrical shapes with conductive portions provided on their outer peripheral surfaces are made conductive to a pair of first conduction portions provided on an inner peripheral surface of the service plug main body and having substantially cylindrical shapes with conductive portions provided thereon. When the service plug main body is removed from the power supply circuit portion, the conduction states with the pair of first connection terminals are respectively released, and the first power supply circuit is opened. A pair of second connection terminals provided on a second power supply circuit for electrically connecting an accessory load including an ECU that detects an abnormality on the drive device side when it is determined that power is supplied from the accessory battery and power is not supplied to the drive device, and having substantially cylindrical shapes with conductive portions provided on their outer peripheral surfaces are made conductive to a pair of second conduction portions provided on an inner peripheral surface of the service plug main body and having substantially cylindrical shapes with conductive portions provided thereon. When the service plug main body is removed from the power supply circuit portion, before the conduction states between the pair of first connection terminals and the pair of first conduction portions are released, the conduction states with the pair of second connection terminals are respectively released, and the second power supply circuit is opened. It is configured to include. A service plug in which when the service plug main body is removed from the power supply circuit portion, a second power supply circuit that supplies power to the accessory load is opened before a first power supply circuit that supplies power to the drive device is opened.

4. The service plug according to claim 3, wherein when the service plug main body is attached to the power supply circuit portion, after the pair of first connection terminals and the pair of first conduction portions are conducted, the pair of second conduction portions are respectively conducted with the pair of second connection terminals.

5. It includes a power supply circuit portion according to claim 1 or claim 2, and a service plug according to claim 1 or claim 2. When the service plug is attached to the power supply circuit portion, after the pair of first connection terminals and the pair of first conduction portions are conducted, the pair of second conduction portions are respectively conducted with the pair of second connection terminals in an in - vehicle power supply device.

6. It includes a power supply circuit portion according to claim 3 or claim 4, and a service plug according to claim 3 or claim 4. In-vehicle power supply device in which when the service plug is removed from the power feeding circuit unit, the conduction states of the pair of second conduction parts with the pair of second connection terminals are each released before the conduction state between the pair of first connection terminals and the pair of first conduction parts is released.

7. A first contact part formed on the first connection terminal and capable of coming into contact with and conducting with a third contact part formed on the first conduction part; A second contact part formed on the second connection terminal and capable of coming into contact with and conducting with a fourth contact part formed on the second conduction part; comprising: The in-vehicle power supply device according to claim 5 or claim 6, wherein the second contact part is set to be further back in the mounting direction in which the service plug is mounted on the power feeding circuit unit than the first contact part.

8. A first contact part formed on the first connection terminal and capable of coming into contact with and conducting with a third contact part formed on the first conduction part; A second contact part formed on the second connection terminal and capable of coming into contact with and conducting with a fourth contact part formed on the second conduction part; comprising: The in-vehicle power supply device according to claim 5 or claim 6, wherein the fourth contact part is set to be further forward in the mounting direction in which the service plug is mounted on the power feeding circuit unit than the third contact part.

9. A vehicle equipped with the in-vehicle power supply device according to any one of claims 5 to 8.

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