KR-20260067991-A - POWER TRANSFER APPARATUS AND ELECTRICAL VEHICLE CHARGE STATION INCLUDING THE SAME

KR20260067991AKR 20260067991 AKR20260067991 AKR 20260067991AKR-20260067991-A

Abstract

An electric vehicle charging device according to one embodiment of the present invention is an electric vehicle charging device comprising one or more chargers that receive power through a power transfer device, wherein the power transfer device comprises one or more busbar pairs including a positive busbar and a negative busbar; and a connection portion capable of being connected to one or more power-requiring devices, and wherein the busbar pair is formed along at least a portion of the inner upper corners of the electric vehicle charging device.

Inventors

권성현
김동명
김형식
김현태
박성희

Assignees

주식회사 엘지에너지솔루션

Dates

Publication Date: 20260513
Application Date: 20251028
Priority Date: 20241106

Claims (18)

One or more busbar pairs including a positive busbar and a negative busbar; and It includes a connection portion capable of connecting to one or more power-requiring devices, and The above busbar pair is a power transmission device formed along at least a portion of the upper corners inside the device where the power transmission device is installed.
In claim 1, The above busbar pair is, A power transmission device connected to a power conversion device that converts AC (Alternating Current) power input from a grid into DC (Direct Current) power and supplies it to the power transmission device.
In claim 1, The above connecting part is, A power transfer device comprising a pair of first connection terminals and a pair of second connection terminals having an inwardly curved shape.
In claim 3, Each of the above pair of first connection terminals and pair of second connection terminals is, A power transfer device electrically connected to the positive or negative terminal of the power-requiring device inserted between a pair of connection terminals.
In claim 1, A power transmission device in which one or more busbar pairs are supported by one or more support insulators disposed on the bottom surface of each busbar.
In claim 1, The above power-requiring device is, A power transfer device comprising one or more of the above-mentioned power conversion device, energy storage device, and charger.
In claim 5, A first space portion accommodating the above busbar pair and the above support insulator; and It further includes a second space portion for accommodating a communication cable, and A power transmission device in which the first space and the second space are partitioned by a partition made of insulating material.
Power transmission device; and An electric vehicle charging device comprising one or more chargers that receive power through the above-mentioned power transmission device, The above power transfer device is, One or more busbar pairs including a positive busbar and a negative busbar; and It includes a connection portion capable of connecting to one or more power-requiring devices, and The above busbar pair is formed along at least a portion of the inner top corners of the electric vehicle charging device.
In claim 8, An energy storage device (ESS) that stores power transmitted through the above-mentioned power transmission device; and An electric vehicle charging device further comprising a charge/discharge control unit connected to the energy storage device and the one or more chargers, controlling the charge/discharge of the energy storage device and the power supply to the one or more chargers.
In claim 9, The above charge/discharge control unit is, An electric vehicle charging device that receives a charging request using one or more of the above chargers and provides power supplied from one or more of the grid and the energy storage device to a charger corresponding to the charging request.
In claim 9, The above charge/discharge control unit is, An electric vehicle charging device that charges the energy storage device using power provided from the grid according to preset conditions.
In claim 9, An electric vehicle charging device further comprising a power conversion device that converts AC (Alternating Current) power input from a grid into DC (Direct Current) power and supplies it to the power transmission device.
In claim 8, The above connecting part is, An electric vehicle charging device comprising a pair of first connecting terminals and a pair of second connecting terminals having an inwardly curved shape.
In claim 13, Each of the above pair of first connection terminals and pair of second connection terminals is, An electric vehicle charging device that is electrically connected to the positive or negative terminal of the power-requiring device inserted between a pair of connection terminals.
In claim 8, An electric vehicle charging device, wherein the above one or more busbar pairs are supported by one or more support insulators disposed on the bottom surface of each busbar.
In claim 8, The above power-requiring device is, An electric vehicle charging device comprising one or more of a power conversion device, an energy storage device, and the charger.
In claim 8, The above power transfer device is, A first space portion accommodating the above busbar pair and a support insulator supporting the above busbar pair; and It further includes a second space portion for accommodating a communication cable, and An electric vehicle charging device in which the first space and the second space are partitioned by a partition made of insulating material.
In claim 8, An electric vehicle charging device in which the power transmission device and the electric vehicle charging device are configured in the form of an integrated container.

Description

Power transfer apparatus and electric vehicle charging station including the same The present invention relates to a power transmission device and an electric vehicle charging device including the same, and more specifically, to a power transmission device having a busbar-type power transmission structure and an electric vehicle charging device including the same. Recently, consumer interest and demand for electric vehicles (EVs) are increasing as they emerge as the most effective alternative for reducing greenhouse gas emissions and improving energy efficiency. Unlike conventional internal combustion engine vehicles, electric vehicles (EVs) require components such as batteries, electric motors, inverters, converters, and Battery Management Systems (BMS). Rechargeable secondary batteries are primarily used for electric vehicles. Secondary batteries, which can be recharged and reused after use, are manufactured into battery modules or battery packs by connecting multiple battery cells in series according to the output capacity required by the device, and are used as power sources for various devices. Secondary batteries are used in a wide range of fields, from small advanced electronic devices such as smartphones to electric bicycles, electric vehicles, and Energy Storage Systems (ESS). A prerequisite for the widespread adoption of electric vehicles is the establishment of charging infrastructure, including charging stations. Charging stations installed at rest areas and similar locations generally receive power directly from the grid to perform rapid charging of electric vehicles. Energy Storage Systems (ESS) are also installed to ensure a stable power supply for these rapid charging stations. To secure the business viability of charging services utilizing energy storage systems, minimizing installation space and maximizing available energy serve as critical factors. To this end, AC-based cable-connected container-type electric vehicle charging stations have been used in the past. However, this type of electric vehicle charging station uses a one-to-one cable connection method between components within the charging station, which has the problem of having many limitations in terms of space utilization. Figure 1 is a conceptual diagram of a typical electric vehicle charging infrastructure. Figure 2 is a diagram showing the configuration of an on/off board charging system for an electric vehicle. Figure 3 is a block diagram of an AC-based cable-connected container-type electric vehicle charging station. FIG. 4 is a block diagram of a DC-based busbar-connected container-type electric vehicle charging device according to an embodiment of the present invention. FIG. 5 is a cross-sectional view of a power transfer device according to an embodiment of the present invention. FIG. 6 is a top view of a power transfer device busbar according to an embodiment of the present invention. FIG. 7 is a cross-sectional view of a busbar connection portion of a power transmission device according to an embodiment of the present invention. FIG. 8 is a block diagram of an electric vehicle charging device according to another embodiment of the present invention. The present invention is susceptible to various modifications and may have various embodiments; specific embodiments are illustrated in the drawings and described in detail in the detailed description. However, this is not intended to limit the invention to specific embodiments, and it should be understood that the invention includes all modifications, equivalents, and substitutions that fall within the spirit and scope of the invention. Similar reference numerals have been used for similar components in the description of each drawing. Terms such as first, second, A, B, etc., may be used to describe various components, but said components shall not be limited by said terms. These terms are used solely for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be named the second component, and similarly, the second component may be named the first component. The term "and/or" includes a combination of a plurality of related described items or any of a plurality of related described items. When it is stated that one component is "connected" or "connected" to another component, it should be understood that while it may be directly connected or connected to that other component, there may also be other components in between. On the other hand, when it is stated that one component is "directly connected" or "directly connected" to another component, it should be understood that there are no other components in between. The terms used in this application are used merely to describe specific embodiments and are not intended to limit the invention. The singular expression includes the plural expression unless the context clearly indicates otherwise. In this application, terms such