Power supply device

Abstract

To supply power to an electric load outside of a vehicle only by connecting a single cable.SOLUTION: A power supply device comprises: a power supply connector connected to a power line from an on-vehicle power storage device; a power supply outlet for supplying power to an electric load outside of a vehicle; a secondary battery; a converter connected to a power supply line between the power supply connector and the power supply outlet and the secondary battery and charging the secondary battery by converting power of the power supply line; and a control device controlling power supply from the power storage device to the electric load by receiving power supply from the secondary battery. The control device is actuated using the secondary battery as a power source, such that it is not necessary to be connected to another power source.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present disclosure relates to a power supply device, and more particularly to a power supply device that supplies power from an in-vehicle power storage device to an electrical load outside the vehicle.

Background Art

[0002] Conventionally, as this type of power supply device, there has been proposed one including a power supply connector connected to a power storage device of a vehicle, a socket connected to an electrical device outside the vehicle, and a 12V power cable connecting a cigarette socket on the vehicle side and a main body (see, for example, Non-Patent Document 1). In this power supply device, the main body and the cigarette socket on the vehicle side are connected by a 12V power cable, and the power supply connector is connected to the inlet of the vehicle.

Prior Art Documents

Non-Patent Documents

[0003]

Non-Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, in the above-described power supply device, not only is it necessary to connect the power supply connector to the vehicle, but it is also necessary to connect the 12V power cable to the cigarette socket, which makes the connection operation complicated and results in a plurality of connection cables.

[0005] The main object of the power supply device of the present disclosure is to supply power to an electrical load outside the vehicle with only a single cable connection.

Means for Solving the Problems

[0006] The power supply device of the present disclosure has adopted the following means to achieve the above-described main object.

[0007] The power supply device of the present disclosure is a power supply device that supplies power from an in-vehicle power storage device to an electrical load outside the vehicle, a power supply connector connected to the power line from the power storage device, an electrical outlet for supplying power to the electrical load, a secondary battery, a converter connected to the power supply line between the power supply connector and the electrical outlet and the secondary battery, which converts the power of the power supply line and charges the secondary battery, a control device that receives power supply from the secondary battery and controls the power supply from the power storage device to the electrical load, and is characterized by comprising the above.

[0008] In the power supply device of the present disclosure, a power supply connector connected to the power line from the power storage device, an electrical outlet for supplying power to the electrical load, a secondary battery, a converter connected to the power supply line between the power supply connector and the electrical outlet and the secondary battery, which converts the power of the power supply line and charges the secondary battery, and a control device that receives power supply from the secondary battery and controls the power supply from the power storage device to the electrical load are provided. Since the control device operates using the secondary battery as a power source, there is no need to connect to other power sources. As a result, it is possible to supply power to an electrical load outside the vehicle only by connecting the power supply connector connected to the power line from the power storage device to the vehicle side, that is, by connecting only a single cable connecting the power supply connector to the vehicle side.

[0009] In the power supply device of the present disclosure, the control device may control the converter to charge the secondary battery when the available power supply from the power storage device is greater than the power consumption of the electrical load. That is, since the charging of the secondary battery is performed by surplus power, it is possible to suppress interfering with the power supply to the electrical load.

[0010] In this case, a relay is provided on the power supply connector side from the connection point of the converter on the power supply line to cut off the power supply connector and the power supply outlet, and the control device may start supplying power to the electrical load after turning on the relay using the power of the secondary battery. Further, a relay is provided on the power supply outlet side from the connection point of the converter on the power supply line to cut off the power supply connector and the power supply outlet, and when the relay cannot be turned on by the power of the secondary battery, the power storage device charges the secondary battery with power more than the extent to which the relay can be turned on by the power of the secondary battery, and then the relay may be turned on to start supplying power to the electrical load.

Brief Description of the Drawings

[0011]

Figure 1

Figure 2

Figure 3

Mode for Carrying Out the Invention

[0012] Next, a mode (embodiment) for carrying out the present disclosure will be described. FIG. 1 is a configuration diagram showing an outline of the configuration of the power supply device 20 as an embodiment of the present disclosure. As shown in FIG. 1, the power supply device 20 of the embodiment includes a power supply connector 22, a power supply outlet 24, a relay 28, a battery 30, an AC / DC converter 36, and a controller 40.

[0013] The power supply connector 22 is connected to the power supply outlet 24 by a power supply line 26, and supplies power from the battery 12 to an electrical load connected to the power supply outlet 24 by connecting to an inlet 16 of a vehicle 10 connected to the in-vehicle battery 12 via a charge / discharge device 14.

[0014] Relay 28 is attached to the power supply line 26 and starts or cuts off the power supply from the power supply connector 22 side to the power strip 24.

[0015] The battery 30 is configured as a well-known lithium-ion secondary battery or nickel-metal hydride secondary battery. The battery 30 is connected to the power strip 24 side from the relay 28 of the power supply line 26 via the AC / DC converter 36 by the battery line 34. The AC / DC converter 36 is configured as a well-known AC / DC converter that converts AC power into DC power.

[0016] The controller 40 is configured by, for example, a microcomputer and operates with the power supplied from the battery 30. Detection values from sensors (not shown) that detect the state (current, voltage, temperature) of the battery 30 are input to the controller 40. Drive control signals to the relay 28, drive control signals to the AC / DC converter 36, etc. are output from the controller 40. When the power supply connector 22 is connected to the inlet 16 of the vehicle 10, the controller 40 is connected to the electronic control unit (hereinafter referred to as ECU) 18 of the vehicle 10 by the communication line 42 and communicates with the ECU 18.

[0017] Next, the operation of the power supply device 20 configured in this way will be described. FIG. 2 is a flowchart showing an example of the power supply process mainly executed by the controller 40. The power supply process starts with first connecting the power supply connector 22 to the inlet 16 of the vehicle 10 (step S100) and starting communication between the ECU 18 of the vehicle 10 and the controller 40 of the power supply device 20 (step S110).

[0018] First, the controller 40 turns on the relay 28 using the power of the battery 30 (step S120) and starts supplying power to the electrical load connected to the power outlet 24 (step S130). Then, when there is surplus power from the power of the battery 12 with respect to the power supply to the electrical load until the power supply ends, the AC / DC converter 36 is operated to charge the battery 30 (steps S140 to S160). Then, when the power supply ends, the relay 28 is turned off (step S170), and this process ends.

[0019] In the power supply device 20 of the embodiment described above, there are the battery 30, the power supply line 26 between the power supply connector 22 and the power outlet 24, and the AC / DC converter 36 connected to the battery 30 to convert the power of the power supply line 26 and charge the battery 30, and the controller 40. Since the controller 40 operates using the battery 30 as a power source, it is possible to supply power to the electrical load connected to the power outlet 24 only by connecting the power supply connector 22 to the inlet 16 of the vehicle 10. As a result, it is possible to supply power to an external electrical load only by connecting the power supply connector 22 to the inlet 16 of the vehicle 10.

[0020] In the power supply device 20 of the embodiment, it is assumed that the battery 30 is connected via the AC / DC converter 36 by the battery line 34 on the power outlet 24 side from the relay 28 of the power supply line 26. However, as shown in the modification example shown in FIG. 3, the battery 30 may be connected via the AC / DC converter 36 by the battery line 34 on the power supply connector 22 side from the relay 28 of the power supply line 26. In this case, when the power of the battery 30 is insufficient, the controller 40 may operate the AC / DC converter 36 to charge the battery 30 before turning on the relay 28 and then start power supply by turning on the relay 28.

[0021] A correspondence relationship between the main elements of the embodiment and the main elements of the invention described in the column of means for solving the problems will be described. In the embodiment, the battery 12 corresponds to the "power storage device", the power supply device 20 corresponds to the "power supply device", the power supply connector 22 corresponds to the "power supply connector", the power supply outlet 24 corresponds to the "power supply outlet", the battery 30 corresponds to the "secondary battery", the AC / DC converter 36 corresponds to the "converter", and the controller 40 corresponds to the "control device".

[0022] Note that the correspondence relationship between the main elements of the embodiment and the main elements of the invention described in the column of means for solving the problems is an example for specifically explaining the form for implementing the invention described in the column of means for solving the problems in the embodiment, and thus does not limit the elements of the invention described in the column of means for solving the problems. That is, the interpretation of the invention described in the column of means for solving the problems should be made based on the description in that column, and the embodiment is merely a specific example of the invention described in the column of means for solving the problems.

[0023] As described above, the present disclosure has been described using embodiments. However, the present disclosure is not limited to such embodiments, and it goes without saying that the present disclosure can be implemented in various forms without departing from the gist of the present disclosure.

Industrial Applicability

[0024] The present disclosure can be used in the manufacturing industry of power supply devices and the like.

Explanation of Reference Numerals

[0025] 10 Vehicle, 12 Battery, 14 Charge and Discharge Device, 16 Inlet, 18 Electronic Control Unit (ECU), 20 Power Supply Device, 22 Power Supply Connector, 24 Power Supply Outlet, 26 Power Supply Line, 28 Relay, 30 Battery, 34 Battery Line, 36 AC / DC Converter, 40 Controller.

Claims

Claim 1 A power supply device that supplies power from an in-vehicle power storage device to an electrical load outside the vehicle, comprising: A power supply connector connected to a power line from the power storage device; An electrical outlet for supplying power to the electrical load; A secondary battery; A converter connected to a power supply line between the power supply connector and the electrical outlet and the secondary battery, for converting the power of the power supply line to charge the secondary battery; A control device that receives power supply from the secondary battery and controls the power supply from the power storage device to the electrical load; A power supply device comprising the above components.

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