Vehicle charging device

Abstract

A vehicle charging device according to an embodiment of the present invention comprises: a reception coil disposed to face a wireless charging coil of an EVSE; a power source unit for converting power received from the reception coil; a communication unit for communicating with the EVSE and an EVCC of a vehicle; a control unit for controlling charging according to information received by the communication unit; and a charging gun inserted into an inlet of the vehicle.

Description

vehicle charging device

[0001] The present invention relates to a vehicle charging device.

[0002] Eco-friendly vehicles such as electric vehicles (EVs) or plug-in hybrid electric vehicles (PHEVs) use electric vehicle supply equipment (EVSE) installed at charging stations to charge their batteries.

[0003] Several standards are actively being developed to facilitate interaction between electric vehicles and EVSE. These standards for electric vehicle charging can be broadly categorized into charging systems, charging interfaces, and communication protocols.

[0004] However, since different regulations are adopted by each country or automobile company, the charging devices, battery packs, and battery management systems (BMS) of electric vehicles must be developed and designed according to the regulations.

[0005] Vehicles without a wireless charging receiver cannot charge via wireless charging stations. Furthermore, if a wired charging station is overcrowded or malfunctioning, charging is limited.

[0006] The technical problem to be solved by the present invention is to provide a vehicle charging device.

[0007] In order to solve the above technical problem, a vehicle charging device according to an embodiment of the present invention includes a receiving coil arranged to face a wireless charging coil of an EVSE; a power supply unit that converts power received from the receiving coil; a communication unit that communicates with the EVSE and an EVCC of a vehicle; a control unit that controls charging according to information received from the communication unit; and a charging gun that is inserted into an inlet of the vehicle.

[0008] The power supply unit may include an inverter unit that converts AC power received from the receiving coil into DC power and a booster unit that boosts the voltage of the DC power converted by the inverter.

[0009] The power supply unit, the communication unit, and the control unit are formed in a box shape, and the receiving coil and the charging gun can each be connected to the box via a cable.

[0010] The control unit can determine whether to start charging by considering whether the receiving coil and the wireless charging coil of the EVSE are connected and whether the inlet of the charging gun is connected.

[0011] The above communication unit can perform PWM communication with the receiving coil.

[0012] It may include a battery that is charged with power for the operation of the vehicle charging device from the receiving coil.

[0013] According to the present embodiments, charging can be performed at a wireless charging station even if the vehicle is not equipped with a wireless charging receiver.

[0014] Additionally, the vehicle charging device can be simplified and miniaturized by including a coil pad capable of wireless vehicle charging.

[0015] Figure 1 illustrates a vehicle charging system.

[0016] Fig. 2 illustrates a vehicle charging device according to the present embodiment.

[0017] Figures 3 to 5 are block diagrams of a vehicle charging device according to another embodiment of the present invention.

[0018] Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the attached drawings.

[0019] However, the technical idea of ​​the present invention is not limited to some of the embodiments described, but can be implemented in various different forms, and within the scope of the technical idea of ​​the present invention, one or more of the components between the embodiments can be selectively combined or substituted for use.

[0020] In addition, terms (including technical and scientific terms) used in this embodiment may be interpreted as having a meaning that can be generally understood by a person of ordinary skill in the technical field to which this embodiment belongs, unless explicitly and specifically defined and described, and terms that are commonly used, such as terms defined in a dictionary, may be interpreted in consideration of the contextual meaning of the relevant technology.

[0021] Additionally, the terms used in this embodiment are for the purpose of describing the embodiments and are not intended to limit the present invention.

[0022] In this specification, the singular may also include the plural unless specifically stated otherwise in the phrase, and when it is described as “A and / or at least one (or more) of B, C”, it may include one or more of all combinations that can be combined with A, B, C.

[0023] Additionally, in describing the components of this embodiment, terms such as first, second, A, B, (a), (b), etc. may be used. These terms are only intended to distinguish the components from other components, and are not intended to limit the nature, order, or sequence of the components.

[0024] And, when a component is described as being 'connected', 'coupled', or 'connected' to another component, it may include not only cases where the component is 'connected', 'coupled', or 'connected' directly to the other component, but also cases where the component is 'connected', 'coupled', or 'connected' by another component between the component and the other component.

[0025] Additionally, when described as being formed or arranged "above" or "below" each component, "above" or "below" includes not only cases where the two components are in direct contact with each other, but also cases where one or more other components are formed or arranged between the two components. Furthermore, when expressed as "above" or "below," the meaning may include not only the upward direction but also the downward direction based on one component.

[0026]

[0027] Figure 1 illustrates a vehicle charging system. A vehicle charging system including an electric vehicle may include a vehicle (10) and an Electric Vehicle Supply Equipment (EVSE) 200. The vehicle (10) is an electric vehicle (EV) and can be charged from the EVSE (200). In order for the vehicle (10) to receive charging power from the EVSE (200), a charging cable connected to the EVSE (200) can be connected to the inlet of the vehicle (10).

[0028] The EVSE (200) is a device that supplies AC or DC and can be placed at a charging station or placed in a home. The EVSE (200) is not limited to a location and can also be implemented to be portable. In this specification, the EVSE (200) can be used interchangeably with a charging station (Supply), an AC charging station (AC supply), a DC charging station (DC supply), a socket-outlet, etc. The EVCC (Electric Vehicle Communication Controller) is a component included in the vehicle (10) and can be connected to an ECU (Electronic Control Unit) in the vehicle (10). The EVCC can perform charging signals and charging power amount control within the vehicle.

[0029] When a user carries the charging gun (210) by hand and charges the charging connector of the charging gun (210) into the inlet (21) provided in the vehicle (10), power supplied from the EVSE (200) is supplied to the vehicle (10) through the charging cable and the charging gun (210), thereby charging the battery of the vehicle (10).

[0030] The charging port (20) may be formed on the outer surface of the vehicle (10) and may include an inlet (21). The inlet (21) may be a socket to which the charging connector of the charging gun (210) is connected. The charging port (20) may include a cover that opens and closes depending on whether charging is being performed. The inlet (21) may include a plurality of charging pins.

[0031]

[0032] FIG. 2 illustrates a vehicle charging device according to the present embodiment, and FIGS. 3 to 5 are block diagrams of vehicle charging devices according to other embodiments of the present invention.

[0033] A vehicle charging device (100) according to the present embodiment may include a receiving coil (110), a power supply unit (120), a communication unit (150), a control unit (140), and a charging gun (130).

[0034] The receiving coil (110) may be positioned to face the wireless charging coil of the EVSE (200). The wireless charging coil of the EVSE (200) may be positioned adjacent to the EVSE (200) and within an area where the vehicle is parked for charging. The receiving coil (110) may be formed in a coil pattern on the pad. The receiving coil (110) may be formed in a shape corresponding to the wireless charging coil of the EVSE (200).

[0035] The power supply unit (120) can convert the power received from the receiving coil (110). The power supply unit (120) can convert the power received from the receiving coil (110) into power suitable for charging a vehicle. The power supply unit (120) can include an inverter unit (121) and a booster unit (122). The inverter unit (121) can convert AC power received from the receiving coil (110) into DC power. The booster unit (122) can boost the voltage of the DC power converted by the inverter unit (121). The power supply unit (120) can convert the power received from the receiving coil (110) to be suitable for various vehicle types and charging modes under the control of the control unit (140).

[0036] The communication unit (150) can communicate with the EVSE (200) and the EVCC (Electric Vehicle Communication Controller) of the vehicle (10). The EVCC is a component included in the vehicle (10) and can be connected to the ECU (Electronic Control Unit) within the vehicle (10). The EVCC can perform charging signals within the vehicle and control the amount of charging power. The communication unit (150) can communicate with the BMS (Battery Management System) of the vehicle (10). The EVCC can be connected to the BMS by wire or wirelessly. The communication unit (150) can communicate with the receiving coil (110) using PWM.

[0037] The control unit (140) can collect various information about the state of charge (SoC) of the battery placed in the vehicle (10) through the communication unit (150). The communication unit (150) can communicate with the receiving coil (110) using PWM. Through this, the power transmitted and received from the receiving coil (110), the charging speed, and whether it is operating normally can be monitored.

[0038] The control unit (140) can control the power supply unit (120) to convert the power received from the receiving coil (110) into power suitable for various vehicle types and charging modes. The control unit (140) can determine whether to start charging by considering whether the receiving coil (110) and the wireless charging coil of the EVSE (200) are connected and whether the inlet (20) of the charging gun (130) is connected. The control unit (140) can control vehicle charging by receiving a user's control through a user terminal.

[0039] The charging gun (130) can be inserted into the inlet of the vehicle (10). The charging gun (130) can be connected to the power supply (120) via a cable. When the user carries the charging gun (130) by hand and charges the charging connector of the charging gun (130) into the inlet (21) provided in the vehicle (10), power supplied from the EVSE (200) is supplied to the vehicle (10) via the charging cable and the charging gun (130), thereby charging the battery of the vehicle (10).

[0040] The vehicle charging device (100) is formed in a box shape with a power supply unit (120), a communication unit (150), and a control unit (140), and the receiving coil (110) and the charging gun (130) can each be connected to the box via a cable. The box-shaped body can have waterproof performance for use in outdoor environments.

[0041] When not in use, the receiving coil (110) and charging gun (130) connected to the cable can be stored by winding the cable within the box. Alternatively, when in use, the receiving coil (110) and charging gun (130) connected to the cable can be pulled out of the box and the cable can be extended for use. This makes the vehicle charging device (100) more portable and easier to use.

[0042] The vehicle charging device (100) may include a battery that is charged with power for the operation of the vehicle charging device (100). The battery may supply power for operation to the power supply unit (120), the communication unit (150), and the control unit (140) included in the vehicle charging device (100). The battery may be charged from the receiving coil (110). The battery may supply power for charging the vehicle. Power received from the EVSE (200) through the receiving coil (110) may be charged to the vehicle, and power previously charged in the battery may be charged to the vehicle. This may have the same effect as charging the vehicle with two power lines, allowing for fast charging.

[0043] According to the present embodiments, charging can be performed at a wireless charging station even if the vehicle is not equipped with a wireless charging receiver. Furthermore, by including a coil pad capable of wireless vehicle charging, the vehicle charging device can be simplified and miniaturized.

[0044]

[0045] Those skilled in the art will appreciate that the present invention can be implemented in modified forms without departing from the essential characteristics of the above-described description. Therefore, the disclosed methods should be considered illustrative rather than restrictive. The scope of the present invention is set forth in the claims, not the foregoing description, and all differences within the scope equivalent thereto should be construed as being encompassed by the present invention.

Claims

1. A receiving coil positioned opposite to the wireless charging coil of the EVSE; A power supply unit that converts power received from the receiving coil; A communication unit that communicates with the EVSE and the EVCC of the vehicle; A control unit that controls charging according to information received from the above communication unit; and A vehicle charging device comprising a charging gun inserted into an inlet of the vehicle.

2. In paragraph 1, A vehicle charging device wherein the power supply unit includes an inverter unit that converts AC power received from the receiving coil into DC power and a booster unit that boosts the voltage of the DC power converted by the inverter unit.

3. In paragraph 1, The above power supply unit, the communication unit and the control unit are formed in a box shape, A vehicle charging device in which the above-mentioned receiving coil and the above-mentioned charging gun are each connected to the above-mentioned box via a cable.

4. In paragraph 1, A vehicle charging device in which the control unit determines the start of charging by considering whether the receiving coil and the wireless charging coil of the EVSE are connected and whether the inlet of the charging gun is connected.

5. In paragraph 1, The above communication unit is a vehicle charging device that performs PWM communication with the above receiving coil.

6. In paragraph 1, A vehicle charging device including a battery that is charged with power for the operation of the vehicle charging device from the receiving coil.

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