CN-121989844-A - Vehicle with power supply system

Abstract

The invention provides a vehicle, which is provided with a power supply system, wherein the power supply system can operate electric equipment which needs to be grounded, and meanwhile, the risk of electric shock caused by contact with a vehicle body when electric leakage occurs in the electric equipment is eliminated. The vehicle of the present invention is characterized by comprising a power conversion device that converts input DC power into AC power and outputs the AC power, a three-pole socket that has a ground terminal for supplying the AC power output by the power conversion device, and a leakage detection device interposed between the power conversion device and the three-pole socket, wherein the ground terminal of the three-pole socket is connected to a cold-side electric wire that connects the power conversion device and the leakage detection device.

Inventors

• Nagasaki Yingming

Assignees

• 丰田自动车株式会社

Dates

Publication Date

20260508

Application Date

20251024

Priority Date

20241108

Claims (2)

1. 1. A vehicle, characterized by comprising: A power conversion device that converts input dc power into ac power and outputs the ac power; A three-pole socket having a ground terminal for supplying the AC power output by the power conversion device, and A leakage detection device inserted between the power conversion device and the tripolar socket, The ground terminal of the three-pole socket is connected to a cold ground side electric wire that connects between the power conversion device and the leakage detection device.
2. 2. The vehicle of claim 1, wherein the vehicle is a vehicle, The ground terminal has a potential different from that of a metal case constituting a body or a frame of the vehicle.

Description

Vehicle with power supply system Technical Field The present invention relates to a vehicle provided with a power supply system having an AC outlet for power supply. Background Patent document 1 discloses a vehicle capable of supplying electric power to an electric device using an in-vehicle battery as a power source. In this vehicle, a ground terminal of a three-pole socket having a ground terminal as a power supply port is grounded to a vehicle body (vehicle body ground). Patent document 1 Japanese patent No. 7524863 Disclosure of Invention When a three-pole plug having a ground terminal is connected to a three-pole socket of a vehicle body, even if electric leakage occurs in an electric device to which electric power is supplied via the three-pole plug, electric current can be discharged to the vehicle body (a closed circuit is formed) through the ground terminal (ground) of the three-pole socket, and thus electric shock can be prevented. However, when a two-pole plug having no ground terminal is connected to a three-pole socket of a vehicle body via a ground terminal, there is a problem in that if electric leakage occurs in an electric device supplied with electric power via the two-pole plug, there is a risk of electric shock occurring between the vehicle body and the ground terminal. As a countermeasure against this risk of electric shock, there is considered a new problem (reduction in convenience) that is different from the risk of electric shock, in that a power supply system of a vehicle is not grounded to a vehicle body so that a closed circuit is not formed when electric equipment leaks, but an operation is stopped when the electric equipment is detected that the ground is not connected. The present invention has been made in view of the above-described problems, and an object of the present invention is to provide a vehicle equipped with a power supply system capable of operating an electric device that needs to be connected to ground and eliminating the risk of electric shock due to contact with a vehicle body when electric leakage occurs in the electric device. In order to solve the above-described problems, one aspect of the present invention is a vehicle including a power conversion device that converts an input dc power into an ac power and outputs the ac power, a three-pole socket that has a ground terminal for supplying the ac power output by the power conversion device, and a leakage detection device that is interposed between the power conversion device and the three-pole socket, wherein the ground terminal of the three-pole socket is connected to a cold-side electric wire that connects the power conversion device and the leakage detection device. Effects of the invention According to the vehicle of the present invention, the electric device to be grounded can be operated, and the risk of electric shock due to contact with the vehicle body when electric leakage occurs in the electric device can be eliminated. Drawings Fig. 1 is a schematic configuration diagram of a power supply system provided in a vehicle according to an embodiment of the present invention and a peripheral portion thereof. Fig. 2 is a reference example of a power supply system configured to form a closed circuit. Detailed Description < Embodiment > Structure Fig. 1 is a schematic configuration diagram showing a power supply system 100 provided in a vehicle according to an embodiment of the present invention and a peripheral portion thereof. The power supply system 100 illustrated in fig. 1 includes an AC inverter 110, a three-pole socket 120, and a leakage detection device 130. The AC inverter 110 is a power conversion device that receives DC power from a battery (not shown) or the like mounted on the vehicle, converts the received DC power into AC power of a predetermined frequency (DC/AC conversion), and outputs the converted AC power. The three-pole outlet 120 is a power supply port (discharge port) for electrically connecting the electrical device 220 with the AC inverter 110 via the power plug 210. The three-pole socket 120 includes a1 st output terminal 121 on the hot side of the ac power supply, a2 nd output terminal 122 on the cold side of the ac power supply, and a ground terminal 123 for grounding. The 1 st output terminal 121 is connected to the hot side of the AC inverter 110 through the 1 st electric wire 141 via the leakage detection device 130. The 2 nd output terminal 122 is connected to the cold side of the AC inverter 110 through the 2 nd electric wire 142 via the leakage detection device 130. The ground terminal 123 is connected to a cold ground side wire (2 nd wire 142) that connects the AC inverter 110 and the leakage detecting device 130 through the 3 rd wire 143 that is a circuit dedicated to the power feeding function. Since the ground terminal 123 is not connected to the vehicle body 300, the potential of the ground terminal 123 is different from (does not share) the potential of the vehicle