Vehicle charging device

Abstract

A vehicle charging device, according to one embodiment of the present invention, comprises: a first wired charging unit coupled to a second wired charging unit of a charging gun so as to charge a battery; a first wireless charging unit arranged so as to face a second wireless charging unit of the charging gun so as to charge the battery; and an electric vehicle communication controller (EVCC) for controlling a charging method so as to be any one of a first charging mode for charging the battery using the first wired charging unit, a second charging mode for charging the battery using the first wireless charging unit, and a third charging mode for charging the battery using the first wired charging unit and the first wireless charging unit.

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

[0006] In order to solve the above technical problem, a vehicle charging device according to an embodiment of the present invention includes a first wired charging unit that charges a battery by being coupled with a second wired charging unit of a charging gun; a first wireless charging unit that is arranged to face the second wireless charging unit of the charging gun and charges the battery; and an EVCC (Electric Vehicle Communication Controller) that controls a charging method to any one of a first charging mode for charging the battery with the first wired charging unit, a second charging mode for charging the battery with the first wireless charging unit, and a third charging mode for charging the battery with the first wired charging unit and the first wireless charging unit.

[0007] When the above EVCC is controlled in the second charging mode or the third charging mode, the starting battery can be emergency charged.

[0008] The EVCC may be controlled to the first charging mode or the second charging mode when the temperature between the inlet and the charging gun exceeds the first value, and the EVCC may be controlled to the third charging mode when the temperature between the inlet and the charging gun is lower than the first value.

[0009] The above EVCC can control the charging ratio of the first wired charging unit and the first wireless charging unit in the third charging mode according to the heat generation and charging speed of the first wired charging unit and the first wireless charging unit and the heat generation of the battery.

[0010] The EVCC may control the charging ratio of the first wired charging unit to be greater than the first wireless charging ratio when the temperature between the inlet and the charging gun exceeds the second value in the third charging mode, and may control the charging ratio of the first wired charging unit to be lower than the first wireless charging ratio when the temperature between the inlet and the charging gun is less than the second value.

[0011] The EVCC may control the charging ratio of the first wired charging unit to be greater than the first wireless charging ratio when the temperature of the battery exceeds the third value in the third charging mode, and may control the charging ratio of the first wired charging unit to be lower than the first wireless charging ratio when the temperature of the battery is lower than the third value.

[0012] The first wireless charging unit may include a receiving coil arranged at an edge of the first wired charging unit.

[0013] In order to solve the above technical problem, an EVSE (Electric Vehicle Supply Equipment) according to the present embodiment includes a charging gun including a second wired charging unit that is coupled with a first wired charging unit of a vehicle inlet to charge a battery; a second wireless charging unit that is arranged to face the second wireless charging unit of the vehicle inlet to charge the battery; and a control unit that controls the second wired charging unit and the second wireless charging unit according to a charging mode signal received from an EVCC, wherein the charging mode signal received from the EVCC may be any one of a first charging mode for charging the battery with the first wired charging unit, a second charging mode for charging the battery with the first wireless charging unit, and a third charging mode for charging the battery with the first wired charging unit and the first wireless charging unit.

[0014]

[0015] In order to solve the above technical problem, a vehicle charging device according to an embodiment of the present invention includes a battery management unit that monitors a vehicle battery; a battery life prediction unit that receives information about the vehicle battery from the battery management unit and predicts the life of the vehicle battery; and a display unit that displays the predicted life of the vehicle battery.

[0016] The above battery life prediction unit can predict the life of the vehicle battery through a charging efficiency calculated using the total chargeable capacity of the battery stored in advance and the charged capacity of the battery received from the battery management unit.

[0017] A temperature sensing unit for sensing the temperature of a first location outside a vehicle is included, and the battery life prediction unit can predict the life of the vehicle battery through the charging efficiency and the charging efficiency according to the temperature sensed by the temperature sensing unit.

[0018] A temperature sensing unit for sensing the temperature outside the vehicle is included, and the battery life prediction unit can store the charging efficiency according to the temperature at which the temperature sensing unit is located.

[0019] The above temperature sensing unit can sense the temperature outside the vehicle close to the location where the vehicle battery is placed.

[0020] According to the present embodiments, charging efficiency can be increased through a vehicle charging inlet and charging gun combination structure that enables simultaneous wired and wireless charging.

[0021] Additionally, the use of shielding can improve wireless charging efficiency by reducing leakage flux and prevent EMF (Electromagnetic field) that may occur during charging.

[0022] In addition, the coupling coefficient can be increased by increasing the area where the transmitting coil and receiving coil face each other, thereby improving wireless charging efficiency.

[0023] Additionally, you can receive battery efficiency value information set by each vehicle OEM to predict more accurate battery life.

[0024] Additionally, it can help drivers prepare for this by informing them of battery life and status.

[0025] Figure 1 illustrates a vehicle charging device.

[0026] Fig. 2 illustrates a vehicle charging device according to the present embodiment.

[0027] Fig. 3 is a block diagram of a vehicle charging device according to the present embodiment.

[0028] Fig. 4 illustrates a vehicle inlet of a vehicle charging device according to the present embodiment.

[0029] Fig. 5 illustrates a vehicle charging gun according to the present embodiment.

[0030] Fig. 6 illustrates one side of a vehicle inlet of a vehicle charging device according to the present embodiment.

[0031] FIG. 7 illustrates one side of a vehicle inlet of a vehicle charging device according to another embodiment of the present invention.

[0032] Fig. 8 is a cross-sectional view of the vehicle inlet illustrated in Fig. 7 taken along the line P-P'.

[0033] Fig. 9 illustrates the upper surface of the first wired charging section of the vehicle inlet of the vehicle charging device according to the present embodiment.

[0034] Fig. 10 is a cross-sectional view of a vehicle inlet and a vehicle charging gun combined in a vehicle charging system according to the present embodiment.

[0035] FIG. 11 is a cross-sectional view of a vehicle inlet and a vehicle charging gun combined in a vehicle charging system according to another embodiment of the present invention.

[0036] Fig. 12 is a flowchart for explaining the operation of selecting a charging method among the first to third charging modes by the EVCC of the vehicle charging system according to the present embodiment.

[0037] Figure 13 is a block diagram of a vehicle charging device according to another embodiment of the present invention.

[0038] Figure 14 is a block diagram of a vehicle charging device according to another embodiment of the present invention.

[0039] Figure 15 is a table showing battery charging efficiency according to the vehicle's external temperature.

[0040] Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the attached drawings.

[0041] 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.

[0042] 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.

[0043] Additionally, the terms used in this embodiment are for the purpose of describing the embodiments and are not intended to limit the present invention.

[0044] 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.

[0045] 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.

[0046] 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.

[0047] 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.

[0048]

[0049] Fig. 1 illustrates a vehicle charging device according to the present embodiment. A charging system including an electric vehicle according to the present embodiment 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).

[0050] 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.

[0051] 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).

[0052] A vehicle battery is designed to power the vehicle motor and can be installed within an electric vehicle. The vehicle is an electric vehicle (EV), and the battery can be charged from an electric vehicle supply equipment (EVSE).

[0053]

[0054] FIG. 2 illustrates a vehicle charging device according to the present embodiment, FIG. 3 is a block diagram of a vehicle charging device according to the present embodiment, FIG. 4 illustrates a vehicle inlet of a vehicle charging device according to the present embodiment, FIG. 5 illustrates a vehicle charging gun according to the present embodiment, FIG. 6 illustrates one side of a vehicle inlet of a vehicle charging device according to the present embodiment, FIG. 7 illustrates one side of a vehicle inlet of a vehicle charging device according to another embodiment of the present invention, FIG. 8 is a cross-sectional view taken along the line P-P' of the vehicle inlet illustrated in FIG. 7, FIG. 9 illustrates an upper surface of a first wired charging part of the vehicle inlet of the vehicle charging device according to the present embodiment, FIG. 10 is a cross-sectional view of a state in which a vehicle inlet and a vehicle charging gun are coupled in a vehicle charging system according to the present embodiment, and FIG. 11 is a cross-sectional view of a state in which a vehicle inlet and a vehicle charging gun are coupled in a vehicle charging system according to another embodiment of the present invention.

[0055] A vehicle charging device (20) according to the present embodiment includes a first wired charging unit (110) and a first wireless charging unit (120), and may include an EVCC (130). A charging gun (210) according to the present embodiment includes a second wired charging unit (220) and a second wireless charging unit (230), and may include a control unit.

[0056] The first wired charging unit (110) can charge the battery by combining with the second wired charging unit (220) of the charging gun (210). The first wired charging unit (110) can include a support member (113) arranged on one surface of the inlet (21). The support member (113) can protrude in a first direction more than the receiving coil. The receiving coil can protrude in the first direction more than the support member (113). The support member (113) can include a power line arranged at the center of the power line. The power line can include a DC(+) line (111) and a DC(-) line (112). A PVC (114) can be arranged on an outer surface of the DC(+) line (111), and a PVC (115) can be arranged on an outer surface of the DC(-) line (112). The first wired charging unit (110) of the inlet (21) may include various ports such as an AC port and a communication port in addition to a DC port depending on the charging standard.

[0057] The first wired charging unit (110) may include a heat dissipation member (116) arranged on the outer surface of the support member (113). The heat dissipation member (116) may prevent heat generated in the first wired charging unit (110) from being transferred to the first wireless charging unit (120). The first wired charging unit (110) may include a first shielding member (117) arranged on the outer surface of the support member (113). The first shielding member (117) may prevent mutual interference between an electromagnetic field generated in the first wired charging unit (110) and an electromagnetic field generated in the first wireless charging unit (120). Here, the shielding member may be ferrite. The heat dissipation member (116) and the first shielding member (117) may be sequentially arranged on the outer surface of the support member (113) of the first wired charging unit (110). The first shielding member (117) may be arranged between the first wired charging unit (110) and the first wireless charging unit (120).

[0058] The first wireless charging unit (120) can charge the battery by combining with the second wireless charging unit (230) of the charging gun (210). The first wireless charging unit (120) can include a receiving coil arranged at the edge of the first wired charging unit (110). The receiving coil can be arranged on one surface of the inlet (21). The receiving coil can include a first region (121) arranged at the edge of the first wired charging unit (110) and a second region (122) protruding from the edge of the first region (121). A second shielding member can be arranged on one surface of the inlet (21) where the receiving coil is arranged. A third shielding member (22) can be arranged to surround the outer surface of the second region (122) of the receiving coil.

[0059]

[0060] The second wired charging unit (220) can charge the battery by combining with the first wired charging unit (110) of the inlet (21). The second wired charging unit (220) can include a support member arranged on one side (211) of the charging gun (210). The support member can protrude in a first direction relative to the transmitting coil. The transmitting coil can protrude in the first direction relative to the supporting member. A power line arranged at the center of the support member can be included. The power line can include a DC(+) line and a DC(-) line. The second wired charging unit (220) of the charging gun (210) can include various ports such as an AC port and a communication port in addition to a DC port depending on the charging standard.

[0061] The second wired charging unit (220) may include a heat dissipation member arranged on the outer surface of the support member. The heat dissipation member may prevent heat generated in the second wired charging unit (220) from being transferred to the second wireless charging unit (230). The second wired charging unit (220) may include a fourth shielding member arranged on the outer surface of the support member. The fourth shielding member may prevent mutual interference between an electromagnetic field generated in the second wired charging unit (220) and an electromagnetic field generated in the second wireless charging unit (230). Here, the fourth shielding member may be ferrite. The heat dissipation member and the fourth shielding member may be sequentially arranged on the outer surface of the support member of the second wired charging unit (220). The fourth shielding member can be placed between the second wired charging unit (220) and the second wireless charging unit (230).

[0062] The second wireless charging unit (230) can charge the battery by combining with the first wireless charging unit (120) of the inlet (21). The second wireless charging unit (230) can include a transmitting coil arranged at an edge of the second wired charging unit (220). The transmitting coil can be arranged on one surface of the charging gun (210). The transmitting coil can include a third region arranged at an edge of the second wired charging unit (220) and a fourth region protruding from the edge of the third region. A fifth shielding member can be arranged on one surface of the charging gun (210) where the transmitting coil is arranged. A sixth shielding member (212) can be arranged to surround an outer surface of the fourth region of the transmitting coil.

[0063]

[0064] When the charging gun (210) is coupled to the inlet (21), the first region (121) of the receiving coil may overlap the third region of the transmitting coil in a first direction. The second region (122) of the receiving coil may overlap the fourth region of the transmitting coil in a second direction perpendicular to the first direction. The fourth region of the transmitting coil may be arranged between the first wired charging unit (110) and the second region (122) of the first wireless charging unit (120). The outer surface of the fourth region of the transmitting coil may be arranged to face the inner surface of the second region (122) of the receiving coil. The diameter of the first region (121) of the receiving coil may be larger than the diameter of the third region of the transmitting coil. The diameter of the second region (122) of the receiving coil may be larger than the diameter of the fourth region of the transmitting coil.

[0065] FIG. 11(a), FIG. 11(b), and FIG. 11(c) illustrate a process of coupling a first wired charging unit (110) and a first wireless charging unit (120) of an inlet (21) with a second wired charging unit (220) and a second wireless charging unit (230) of a charging gun (210). The first wired charging unit (110) and the second wired charging unit (220) may be coupled to each other, and the first wireless charging unit (120) and the second wireless charging unit (230) may be arranged to face each other. Through this, the coupling coefficient between the two coils can be increased by increasing the area where the receiving coil and the transmitting coil face each other, and the charging efficiency can be improved. As shown in Fig. 11(c), when the charging gun (210) is completely connected to the inlet (21), the shielding member (22) placed on the outer surface of the first wireless charging unit (120) can minimize the electromagnetic field generated from the first wireless charging unit (120) and the second wireless charging unit (230) from leaking to the outside.

[0066] According to another embodiment, when the charging gun (210) is coupled to the inlet, the second region (122) of the receiving coil may be disposed between the second wired charging unit (220) and the fourth region of the second wireless charging unit (230). The outer surface of the second region (122) of the receiving coil may be disposed to face the inner surface of the fourth region of the transmitting coil. The diameter of the first region (121) of the receiving coil may be smaller than the diameter of the third region of the transmitting coil. The diameter of the second region (122) of the receiving coil may be smaller than the diameter of the fourth region of the transmitting coil.

[0067]

[0068] The Electric Vehicle Communication Controller (EVCC, 130) can perform charging signal and charging power control within the vehicle. The EVCC (130) can be connected to an Electronic Control Unit (ECU) within the vehicle (10). The EVCC (130) can communicate with the battery management unit of the vehicle (10). The EVCC (130) can be connected to the battery management unit via wired or wireless connections.

[0069] The Battery Management System (BMS) can monitor the temperature of the vehicle battery. The BMS monitors the voltage, current, and temperature of the vehicle battery to maintain it in optimal condition. The BMS can transmit vehicle battery charge information, vehicle charging speed, and vehicle battery information to the EVCC (130). The BMS can also transmit the vehicle battery temperature to the EVCC (130).

[0070] The EVCC (Electric Vehicle Communication Controller, 130) can control the first wired charging unit (110) and the first wireless charging unit (120) according to the charging method. The EVCC (130) can communicate with the control unit of the EVSE (200). A control signal generated by the EVCC (130) according to the charging method can be transmitted to the control unit of the EVSE (200). The control unit of the EVSE (200) can control the second wired charging unit (220) and the second wireless charging unit (230) according to the charging method.

[0071] The EVCC (130) can control the charging method in one of the following: a first charging mode in which the battery is charged with the first wired charging unit (110), a second charging mode in which the battery is charged with the first wireless charging unit (120), and a third charging mode in which the battery is charged with the first wired charging unit (110) and the first wireless charging unit (120).

[0072] The EVCC (130) can control the charging method in a first charging mode in which the battery is charged with the first wired charging unit (110) when wireless charging is not possible. The EVCC (130) can control the charging method in a second charging mode in which the battery is charged with the first wireless charging unit (120) when wired charging is not possible. The EVCC (130) can charge the vehicle battery and the starting battery in the second charging mode. The EVCC (130) can perform emergency charging of the discharged starting battery in the second charging mode. The EVCC (130) can perform V2V (Vehicle to Vehicle) charging in the second charging mode in a situation in which the vehicle cannot go to a charging station. The EVCC (130) can control the charging method in a third charging mode in which the battery is charged with the first wired charging unit (110) and the first wireless charging unit (120) when fast charging is required.

[0073] The EVCC (130) can control the charging method to one of the first charging mode to the third charging mode depending on the amount of heat generated by the first wired charging unit (110) and the first wireless charging unit (120). When the temperature between the inlet (21) and the charging gun (210) exceeds a first value, the EVCC (130) can be controlled to the first charging mode or the second charging mode. Here, the first charging mode or the second charging mode can be set by the user's selection and can be selected by the charging environment. When the temperature between the inlet (21) and the charging gun (210) is lower than the first value, the EVCC (130) can be controlled to the third charging mode. According to another embodiment, the EVCC (130) can control the charging method based on the temperature of the battery rather than the temperature between the inlet (21) and the charging gun (210).

[0074] The EVCC (130) can control the charging method to one of the first charging mode to the third charging mode depending on the charging speed of the first wired charging unit (110) and the first wireless charging unit (120). For example, in a charging environment where both wired charging and wireless charging are possible, if the wired charging speed is fast, charging can be controlled to the first charging mode, and if the wireless charging speed is fast, charging can be controlled to the second charging mode.

[0075] The EVCC (130) can control the charging ratio of the first wired charging unit (110) and the first wireless charging unit (120) according to the heat generation and charging speed of the first wired charging unit (110) and the first wireless charging unit (120) in the third charging mode. For example, in the third charging mode, when the heat generation of the first wired charging unit (110) is greater than the heat generation of the first wireless charging unit (120), the EVCC (130) can control the charging ratio of the first wired charging unit (110) to be greater than the charging ratio of the first wireless charging unit (120). In the third charging mode, when the charging speed of the first wired charging unit (110) is greater than the charging speed of the first wireless charging unit (120), the EVCC (130) can control the charging ratio of the first wired charging unit (110) to be greater than the charging ratio of the first wireless charging unit (120).

[0076] In the third charging mode, when the temperature between the inlet (21) and the charging gun (210) exceeds the second value, the EVCC (130) can control the charging ratio of the first wired charging unit (110) to be greater than the charging ratio of the first wireless charging unit (120). In the third charging mode, when the temperature between the inlet (21) and the charging gun (210) is less than the second value, the EVCC (130) can control the charging ratio of the first wired charging unit (110) to be lower than the charging ratio of the first wireless charging unit (120).

[0077] The EVCC (130) can control the charging ratios of the first wired charging unit (110) and the first wireless charging unit (120) according to the heat generation amount of the battery in the third charging mode. When the temperature of the battery exceeds the third value in the third charging mode, the EVCC (130) can control the charging ratio of the first wired charging unit (110) to be greater than the charging ratio of the first wireless charging unit (120). When the temperature of the battery is lower than the third value in the third charging mode, the EVCC (130) can control the charging ratio of the first wired charging unit (110) to be lower than the charging ratio of the first wireless charging unit (120).

[0078] Fig. 12 is an exemplary flowchart illustrating the operation of selecting a charging method among the first to third charging modes by the EVCC (130). Charging is initiated by selecting a charging method according to a charging environment that allows wired charging, wireless charging, or both wired and wireless charging. If the battery temperature is below 90°C while wired charging is in progress, vehicle battery charging continues, and if the battery temperature exceeds 90°C, vehicle battery charging may be terminated.

[0079] If the battery temperature exceeds 40°C while wireless charging is in progress, the vehicle battery can be charged, and in an emergency, the starting battery can be charged. If the battery temperature is below 40°C, the charging method can be controlled to allow both wired and wireless charging. If the battery temperature exceeds 90°C while wired and wireless charging are in progress, the charging method is controlled to wireless charging. If the battery temperature is below 90°C, the vehicle battery can be charged, and in an emergency, the starting battery can be charged. These are examples only, and the charging method may vary depending on the charging environment and battery temperature.

[0080]

[0081] Fig. 13 is a block diagram of a vehicle charging device according to the present embodiment, Fig. 14 is a block diagram of a vehicle charging device according to another embodiment of the present invention, and Fig. 15 is a table showing battery charging efficiency according to the external temperature of the vehicle.

[0082] A vehicle charging device (1000) according to another embodiment of the present invention includes a battery life prediction unit (1100), a battery management unit (1200), and a display unit (1300), and may include a temperature detection unit.

[0083] A vehicle battery is used to drive the vehicle motor and can be installed within an electric vehicle. The vehicle is an electric vehicle (EV), and the battery can be charged from an Electric Vehicle Supply Equipment (EVSE). An EVSE is a device that supplies AC or DC electricity and can be installed at a charging station or within a home. EVSE is not limited to a specific location and can also be implemented as portable.

[0084] The Battery Management System (BMS) 120 can monitor the vehicle battery. The Battery Management System (1200) can monitor the voltage, current, and temperature of the vehicle battery to maintain it in an optimal state. The Battery Management System (1200) can transmit vehicle battery charge information, vehicle charging speed, and vehicle battery information to the Battery Life Prediction System (1100).

[0085] The battery life prediction unit (1100) can receive information about the vehicle battery from the battery management unit (1200) and predict the life of the vehicle battery. The battery life prediction unit (1100) can predict the life of the battery by receiving battery efficiency value information set for each vehicle OEM from the battery management unit (1200). The battery life prediction unit (1100) can predict the life of the vehicle battery from the charging efficiency calculated using the total chargeable capacity of the battery stored in advance and the charged capacity of the battery received from the battery management unit (1200). Here, since the total chargeable capacity of the battery stored in advance has different values ​​for each vehicle OEM, the battery life prediction unit (1100) can check the type of battery installed in the vehicle and use the total chargeable capacity of the battery to predict the battery life. In addition, the charged capacity of the battery received from the battery management unit (1200) may mean the capacity at which the battery is fully charged.

[0086] The battery life prediction unit (1100) can predict the battery life using Equation 1 below.

[0087] <Formula 1>

[0088] Rechargeable Battery Life = [(Battery Charged Capacity) / (Battery Total Chargeable Capacity)] X 100

[0089]

[0090] The temperature sensor can detect the temperature outside the vehicle. The temperature sensor can detect the temperature of a first location outside the vehicle. Here, the first location may refer to the outside of the vehicle near the location where the vehicle battery is located.

[0091] The battery life prediction unit (1100) may store the charging efficiency according to the temperature at which the temperature detection unit is located. For example, when the vehicle battery is placed at a first location, the temperature detection unit detects the temperature outside the vehicle close to the first location, and the battery life prediction unit (1100) may store the charging efficiency according to the temperature at the first location. The vehicle battery may be placed at various locations, such as a second location or a third location, in addition to the first location, and the battery life prediction unit (1100) may store the charging efficiency according to the temperature at various locations, and ultimately, the life of the vehicle battery may be predicted through the charging efficiency according to the temperature close to the location where the vehicle battery is placed. That is, the expected battery life may be calculated by measuring the influence of the transition temperature and the external temperature according to the surrounding organs depending on the location where the vehicle battery is placed.

[0092] When the battery life prediction unit (1100) considers the temperature outside the vehicle in predicting the vehicle battery life, it can predict the battery life using Equation 2 below.

[0093] <Formula 2>

[0094] Rechargeable battery life = [(Battery charged capacity) / (Battery total chargeable capacity) X Charging efficiency according to external temperature] X 100

[0095]

[0096] Figure 15 is a table showing battery charging efficiency according to the vehicle's external temperature. Referring to Figure 15, when the vehicle's external temperature is 25°C, the battery charging efficiency may be maximum. However, when the vehicle's external temperature increases or decreases from 25°C, the battery charging efficiency may decrease.

[0097] For example, if the temperature outside the vehicle at the location where the vehicle battery is located is 10℃, the total chargeable capacity of the vehicle battery is 38KWh, and the current maximum charged capacity of the battery is 34KWh, the predicted life of the vehicle battery is calculated as "Expected life (10℃) = 34KWh / 38KWhX 0.68 = 60%", and has an expected life of 60%.

[0098] The display unit (1300) can externally display the predicted vehicle battery life predicted by the battery life prediction unit (1100). The display unit (1300) may refer to a user terminal or an EVSE. The user can check the vehicle battery life through the display unit (1300) and, if the vehicle battery life is low, take precautions such as battery replacement or repair.

[0099] According to these embodiments, battery efficiency values ​​set by each vehicle OEM can be received to more accurately predict battery life. Furthermore, drivers can be informed of battery life and status, allowing them to prepare accordingly.

[0100]

[0101] 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 first wired charging unit that charges the battery by combining with a second wired charging unit of the charging gun; A first wireless charging unit that is positioned to face the second wireless charging unit of the above charging gun and charges the battery; and A vehicle charging device including an EVCC (Electric Vehicle Communication Controller) that controls a charging method to any one of a first charging mode for charging the battery with the first wired charging unit, a second charging mode for charging the battery with the first wireless charging unit, and a third charging mode for charging the battery with the first wired charging unit and the first wireless charging unit.

2. In paragraph 1, A vehicle charging device that emergency charges a starting battery when the EVCC is controlled in the second charging mode or the third charging mode.

3. In paragraph 1, The above EVCC controls the first charging mode or the second charging mode when the temperature between the inlet and the charging gun exceeds the first value, The above EVCC is a vehicle charging device that controls the third charging mode when the temperature between the inlet and the charging gun is lower than the first value.

4. In paragraph 1, The above EVCC is a vehicle charging device that controls the charging ratio of the first wired charging unit and the first wireless charging unit according to the heat generation and charging speed of the first wired charging unit and the first wireless charging unit and the heat generation of the battery in the third charging mode.

5. In paragraph 4, The above EVCC controls the charging ratio of the first wired charging unit to be greater than the first wireless charging ratio when the temperature between the inlet and the charging gun exceeds the second value in the third charging mode, A vehicle charging device that controls the charging ratio of the first wired charging unit to be lower than the first wireless charging ratio when the temperature between the inlet and the charging gun is lower than the second value.

6. In paragraph 1, The above EVCC controls the charging ratio of the first wired charging unit to be greater than the first wireless charging ratio when the temperature of the battery exceeds the third value in the third charging mode, A vehicle charging device that controls the charging ratio of the first wired charging unit to be lower than the first wireless charging ratio when the temperature of the battery is lower than the third value.

7. In paragraph 1, A vehicle charging device wherein the first wireless charging unit includes a receiving coil arranged at an edge of the first wired charging unit.

8. Battery management unit that monitors the vehicle battery; A battery life prediction unit that receives information about the vehicle battery from the battery management unit and predicts the life of the vehicle battery; and A vehicle charging device including a display unit for displaying the predicted life of the vehicle battery.

9. In paragraph 8, The above battery life prediction unit is a vehicle charging device that predicts the life of the vehicle battery from the charging efficiency calculated through the total chargeable capacity of the battery stored in advance and the charged capacity of the battery received from the battery management unit.

10. In paragraph 9, Includes a temperature sensing unit that senses the temperature of a first location outside the vehicle, The above battery life prediction unit is a vehicle charging device that predicts the life of the vehicle battery through the charging efficiency and the charging efficiency according to the temperature detected by the temperature detection unit.

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