Charging and power supply device and vehicle

Abstract

To achieve a power charging-and-feeding apparatus and a vehicle capable of feeding power in a charging time in an AC power feeding function of the vehicle.SOLUTION: A power charging-and-feeding apparatus 2 includes a battery 3, a power charging-and-feeding device 4 that can charge the battery 3 with a three-phase AC power source 6 connected via an inlet 41, and feed power of the battery 3 to an external apparatus through the inlet 41, and an ECU 5 that controls a power charging-and-feeding operation of the power charging-and-feeding device 4. The power charging-and-feeding device 4 includes a PFC circuit 46, and a first relay group 43 that can switch output destinations of two voltage lines among a plurality of voltage lines of the PFC circuit 46, to an electric outlet connectable with an apparatus different from the external apparatus.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a charging and power supply device and a vehicle. [Background technology]

[0002] In recent years, research and development has been conducted on charging and power supply in mobility vehicles equipped with secondary batteries that contribute to energy efficiency, in order to ensure that more people can access affordable, reliable, sustainable, and advanced energy.In addition, AC (alternating current) power supply and charging functions from vehicles have been attracting attention in recent years (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2008-312395 Summary of the Invention [Problem to be solved by the invention]

[0004] In the technology for charging and power supply in mobility vehicles equipped with secondary batteries, existing power supply systems for AC power supply from the vehicle use an AC inverter and a switching relay unit to switch the power supply destination between inside and outside the vehicle. However, existing power supply systems have issues such as increased costs due to additional parts, additional part layout, and the inability to supply power while charging.

[0005] In order to solve the above-mentioned problems, the present application aims to provide a charging and power supply device and a vehicle that can supply AC power from a vehicle while charging, and ultimately to contribute to energy efficiency. [Means for solving the problem]

[0006] A charging power supply device according to one embodiment of the present disclosure includes a battery, a charging power supply unit that charges the battery from a power supply source connected via a first connection unit and is capable of supplying the battery's power to an external device from the first connection unit, and a charging control unit that controls the charging power supply operation of the charging power supply unit, wherein the charging power supply unit includes a power factor correction circuit and a first relay group that is capable of switching the output destination of two of multiple voltage lines of the power factor correction circuit to a second connection unit that is connectable to a device other than the external device.

[0007] Preferably, the charging power supply device further comprises a second relay group provided on two voltage lines connected to the first relay group, one of which is connected to the voltage line and the other of which is connected to a neutral line.

[0008] A vehicle according to one embodiment of the present disclosure is a vehicle equipped with a charging and power supply device, wherein the first connection part is an inlet for charging and power supply to which a connector of the external device is connected, and the second connection part is an outlet provided in the passenger compartment of the vehicle. [Effects of the Invention]

[0009] According to the present invention, it is possible to achieve a charging power supply device and a vehicle that can supply AC power from a vehicle while charging. [Brief explanation of the drawings]

[0010] [Figure 1] 1 is a block diagram showing the configuration of a vehicle according to an embodiment of the present invention; [Figure 2] 5A and 5B are diagrams illustrating an example of a charging and power supplying operation of the charging and power supplying device according to the embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0011] Hereinafter, embodiments of a charging power supply device and a vehicle of the present invention will be described with reference to the drawings. Fig. 1 is a block diagram showing the configuration of a vehicle 1 according to this embodiment. Vehicle 1 may be, for example, a so-called EV (Electric Vehicle) that does not have an engine, or a PHEV (Plug-in Hybrid Electric Vehicle) that has an engine.

[0012] The vehicle 1 is equipped with a charging power supply device 2 that can charge a battery 3 from a three-phase AC power supply 6 as a power supply source and can supply power from the battery 3 to external devices. The charging power supply device 2 includes the battery 3, a charging power supply unit 4, and an ECU 5.

[0013] The battery 3 is a secondary battery that can both discharge (convert chemical energy into electrical energy) and charge (convert electrical energy into chemical energy). In the following, a case will be described in which a so-called lithium ion storage battery that charges and discharges by the movement of lithium ions between electrodes is used as the battery 3, but the present invention is not limited to this.

[0014] The charging power supply device 4 includes an inlet 41, a socket 42, a first relay group 43, an EMC filter 44, a second relay group 45, and a power factor correction circuit (PFC circuit) 46. The charging power supply device 4 charges the battery 3 from a three-phase AC power supply 6 connected via the inlet 41, and can supply power from the battery 3 to an external device from the inlet 41 or the socket 42.

[0015] The ECU 5 is a microcomputer that controls charging and power supply to the battery 3 using the charging power supply device 4. The ECU 5 is a microcomputer that is configured with hardware such as an I / O interface that performs A / D conversion of detection signals from various sensors, RAM and ROM that store various programs and data, a CPU that executes various arithmetic processing in accordance with the programs, and a drive circuit that generates various control signals in accordance with the results of the CPU's arithmetic processing. Specifically, the ECU 5 controls switching, mode selection, etc. in the first relay group 43, the second relay group 45, the PFC circuit 46, etc.

[0016] The inlet 41 is provided outside the passenger compartment of the vehicle 1 and is an inlet for charging and supplying power to which a connector of an external device is connected.

[0017] The outlet 42 is an outlet provided in the passenger compartment of the vehicle 1. The outlet 42 is connected to a device other than the external device connected to the inlet 41 via a connector 7, for example.

[0018] The first relay group 43 includes a switch K3 and a switch K4. In Fig. 1, the switches K3 and K4 are shown in an OFF state. The first relay group 43 can switch the output destination of two of the multiple voltage lines of the PFC circuit 46 to an outlet 42 that can be connected to a device other than the external device connected to the inlet 41.

[0019] The EMC filter 44 is a filter circuit that removes noise contained in the AC output of the three-phase AC power supply 6. The EMC filter 44 may be disposed between the inlet 41 / outlet 42 and the first relay group 43.

[0020] The second relay group 45 includes switches K1 and K2. The second relay group 45 is provided on two voltage lines connected to the first relay group 43, with one connected to the voltage line and the other connected to the neutral line. In Fig. 1, the switches K1 and K2 are shown in the OFF state.

[0021] During charging, the second relay group 45 switches the current phase to three phase by turning off the switches K1 and K2 under the control of the ECU 5, and switches the current phase to single phase by turning on the switches K1 and K2 under the control of the ECU 5. Furthermore, during power supply to the outside of the vehicle, the second relay group 45 turns on the switches K1 and K2 under the control of the ECU 5, allowing the entire PFC circuit 46 to be used as an inverter circuit.

[0022] The PFC circuit 46 is a three-phase, four-wire bridgeless power factor correction circuit connected between the second relay group 45 and the battery 3. The PFC circuit 46 includes a coil L, a rectifier circuit, an inverter circuit, etc. In the present embodiment, the PFC circuit 46 is a three-phase, four-wire bridgeless power factor correction circuit, but may also be a three-phase, three-wire bridgeless power factor correction circuit.

[0023] The PFC circuit 46 includes units L1, L2, L3, and N. The PFC circuit 46 rectifies the AC power from the EMC filter 44 into DC power and improves the power factor by making the AC current flowing through the PFC circuit 46 closer to the sine wave of the AC voltage from the inlet 41. The units L1, L2, L3, and N operate as a power factor correction circuit and also as an inverter circuit.

[0024] The PFC circuit 46 has operation modes PFC1, PFC2, PFC3, and PFC-N as modes in which it operates as a power factor correction circuit, and also has operation modes INV1, INV2, INV1-1, INV1-2, INV2-1, and INV2-2 as modes in which it operates as an inverter circuit.

[0025] 2 is a diagram showing an example of the charging and power supplying operation of the charging and power supply device 2 according to this embodiment. When only charging is performed, the charging and power supply device 2 can charge the battery 3 from the three-phase AC power source 6 using two methods: single-phase 6.6 kW and three-phase 10 kW.

[0026] During charging at single-phase 6.6 kW, the second relay group 45 turns on switches K1 and K2, and the first relay group 43 turns off switches K3 and K4. The PFC circuit 46 operates unit L1 in operation mode PFC1, unit L2 in operation mode PFC1, unit L3 in operation mode PFC2, and unit N in operation mode PFC2. This allows the charging power supply device 2 to charge the battery 3 from the three-phase AC power supply 6 using a single-phase 6.6 kW system.

[0027] During charging at three-phase 10 kW, the second relay group 45 turns off switches K1 and K2, and the first relay group 43 turns off switches K3 and K4. The PFC circuit 46 operates unit L1 in operation mode PFC1, unit L2 in operation mode PFC2, unit L3 in operation mode PFC3, and unit N in operation mode PFC-N. This allows the charging power supply device 2 to charge the battery 3 from the three-phase AC power supply 6 using a three-phase 10 kW system.

[0028] In addition, when the charging power supply device 2 only supplies power in single phase, it can supply power from the battery 3 to external devices using three methods: 3.5 kW inside / outside the vehicle, 3.5 to 7 kW outside the vehicle, and 3.5 kW inside the vehicle.

[0029] In the case of 3.5 kW interior / exterior power supply, the second relay group 45 turns off the switches K1 and K2, and the first relay group 43 turns on the switches K3 and K4. The PFC circuit 46 operates the unit L1 in the operation mode INV1-1, the unit L2 in the operation mode INV2-1, the unit L3 in the operation mode INV2-2, and the unit N in the operation mode INV1-2. As a result, the charging power supply device 2 performs inverter operation using the PFC circuit 46, and is able to supply power to the interior and exterior of the vehicle via both the inlet 41 and the outlet 42.

[0030] When feeding power to the exterior of the vehicle at 3.5 to 7 kW, the second relay group 45 turns on switches K1 and K2, and the first relay group 43 turns off switches K3 and K4. The PFC circuit 46 operates unit L1 in operation mode INV1, unit L2 in operation mode INV1, unit L3 in operation mode INV2, and unit N in operation mode INV2. This allows the charging power supply device 2 to use the entire PFC circuit 46 as an inverter circuit when feeding power to the exterior of the vehicle, making it possible to feed power from the battery 3 to an external device using the exterior-of-vehicle 3.5 to 7 kW method.

[0031] When supplying 3.5 kW of power to the vehicle interior, the second relay group 45 turns switches K1 and K2 OFF, and the first relay group 43 turns switches K3 and K4 ON. The PFC circuit 46 operates unit L1 in operation mode OFF, unit L2 in operation mode INV1, unit L3 in operation mode INV1, and unit N in operation mode OFF. This allows the charging power supply device 2 to supply power to the vehicle interior via the outlet 42 by performing inverter operation using the PFC circuit 46.

[0032] When supplying power during charging, the charging power supply device 2 can charge at single-phase 3.3 kW and supply power at 3.5 kW inside the vehicle.

[0033] When power is supplied during charging, the second relay group 45 turns off the switches K1 and K2, and the first relay group 43 turns on the switches K3 and K4. The PFC circuit 46 operates the unit L1 in the operation mode PFC, the unit L2 in the operation mode INV, the unit L3 in the operation mode INV, and the unit N in the operation mode PFC.

[0034] Therefore, the charging power supply device 2 can simultaneously perform inverter operation and power factor correction operation using the PFC circuit 46. This allows the charging power supply device 2 to charge the battery 3 using a single-phase 3.3 kW system while supplying power to the outlet 42 using a 3.5 kW system inside the vehicle.

[0035] According to this embodiment, for example, the following effects are achieved. The charging power supply device 2 includes a battery 3, a charging power supply unit 4 that charges the battery 3 from a three-phase AC power source 6 connected via an inlet 41 and can supply power from the battery 3 to an external device from the inlet 41, and an ECU 5 that controls the charging power supply operation of the charging power supply unit 4, and the charging power supply unit 4 includes a PFC circuit 46 and a first relay group 43 that can switch the output destination of two of the multiple voltage lines of the PFC circuit 46 to an outlet that can be connected to a device other than the external device.

[0036] That is, according to this embodiment, the charging power supply device 2 is equipped with a PFC circuit 46 and a first relay group 43, and the output destination of two of the multiple voltage lines in the PFC circuit 46 can be switched to the outlet 42 by the first relay group 43.

[0037] Therefore, by simultaneously performing inverter operation and power factor correction operation using the PFC circuit 46, the charging power supply device 2 can supply power to the outlet 42 while performing single-phase charging of the battery 3. Furthermore, by performing inverter operation using the PFC circuit 46, the charging power supply device 2 can supply power to the outside via both the inlet 41 and the outlet 42.

[0038] Furthermore, in the past, when supplying power to an outlet inside the vehicle cabin while performing single-phase charging of the battery, the charging power supply device required an additional AC inverter circuit to supply power to the outlet inside the vehicle cabin. However, the charging power supply device 2 according to this embodiment performs inverter operation and power factor correction using the PFC circuit 46, eliminating the need for the conventional AC inverter circuit. This reduces the number of components in the charging power supply device 2 and reduces manufacturing costs and the effort required for component layout.

[0039] The charging power supply device 4 also includes a second relay group 45 that is provided on two voltage lines connected to the first relay group 43, connecting one to the voltage line and the other to a neutral line. With this configuration, the charging power supply device 2 can switch between single-phase and three-phase charging of the battery 3 when not supplying power to the vehicle interior. Furthermore, when not supplying power to the vehicle interior, the charging power supply device 2 can use the entire PFC circuit 46 as an inverter circuit when supplying power to the outside of the vehicle, making it possible to supply external power of, for example, 3.5 to 7 kW.

[0040] Furthermore, vehicle 1 equipped with charging power supply device 2 includes, as a first connection part, inlet 41 for charging power to which a connector of an external device is connected, and, as a second connection part, outlet 42 provided in the passenger compartment of vehicle 1. With this configuration, vehicle 1 can supply power to outlet 42 while performing single-phase charging of battery 3 via inlet 41. Furthermore, vehicle 1 can supply power to the outside via both inlet 41 and outlet 42.

[0041] Although one embodiment of the present invention has been described above, the present invention is not limited to this, and the detailed configuration may be modified as appropriate within the scope of the spirit of the present invention. [Explanation of symbols]

[0042] 1 vehicle 2. Charging and power supply device 3 Battery 4 Charging power supply 5 ECU (control unit) 6 Three-phase AC power supply (power supply source) 41 Inlet (first connection) 42 Outlet (second connection) 43 First Relay Group 44 EMC Filters 45 Second Relay Group 46 PFC circuit

Claims

1. A battery, a charging power supply device that charges the battery from a power supply source connected via a first connection part and that can supply power from the battery to an external device from the first connection part; a control unit that controls a charging and power supplying operation of the charging and power supply device, The charging power supply device is a power factor correction circuit; a first relay group that can switch output destinations of two voltage lines among a plurality of voltage lines of the power factor correction circuit to a second connection portion that can be connected to a device other than the external device, the charging power supply charges the battery using the remaining voltage line of the plurality of voltage lines of the power factor correction circuit; Charging power supply device.

2. 2. The charging device according to claim 1, wherein the charging power supply unit includes a second relay group provided on two voltage lines connected to the first relay group, one of which is connected to the voltage line and the other of which is connected to a neutral line.

3. A vehicle equipped with the charging and power supply device according to claim 1 or 2, the first connection portion is an inlet for charging and supplying power to which a connector of the external device is connected, the second connection portion is a power outlet provided in a passenger compartment of the vehicle; vehicle.

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