KR-20260062683-A - BATTERY SYSTEM FOR ELECTRIC VEHICLE

Abstract

A battery system for an electric vehicle is disclosed. The battery system for an electric vehicle according to an embodiment of the present invention includes a fixed main battery that supplies main power to a vehicle, and a detachable auxiliary battery that is electrically connected to the fixed main battery and receives power from the fixed main battery or supplies power to the fixed main battery, and the detachable auxiliary battery may be provided so as to be detachably attached to a storage portion formed within the frunk of the vehicle.

Inventors

• 이성노

Assignees

• 주식회사 서연이화

Dates

Publication Date

20260507

Application Date

20241029

Claims (8)

1. A stationary main battery that supplies main power to the vehicle; and A detachable auxiliary battery electrically connected to the fixed main battery to receive power from the fixed main battery or to supply power to the fixed main battery; The above detachable auxiliary battery is An electric vehicle battery system provided to be detachably installed in a storage compartment formed within the frunk of the vehicle.
2. In paragraph 1, The above detachable auxiliary battery is Pajibu, and A charging port for charging the above-mentioned detachable auxiliary battery, and An outlet for electrically connecting external devices, and A battery system for an electric vehicle comprising a display unit that displays the remaining power of the above-mentioned detachable auxiliary battery.
3. In paragraph 2, The above detachable auxiliary battery is An electric vehicle battery system in which the voltage output to the outside through the above outlet is 220V.
4. In paragraph 2, The above detachable auxiliary battery is An electric vehicle battery system in which the current output to the outside through the above outlet is alternating current.
5. In paragraph 1, The above electric vehicle battery system An electric vehicle battery system further comprising a generator configured to generate electrical energy through the rotation of an electric motor for driving the vehicle and to charge the detachable auxiliary battery.
6. In paragraph 5, The above storage part A first adapter that electrically connects the detachable auxiliary battery mounted in the storage compartment and the fixed main battery, and An electric vehicle battery system comprising a second adapter that electrically connects the detachable auxiliary battery mounted in the above storage unit and the generator.
7. In paragraph 6, The above detachable auxiliary battery is A first connection part connected to the first adapter above, and An electric vehicle battery system comprising a second connection part connected to the second adapter above.
8. In paragraph 1, The above storage part It includes a sealing member provided on the opening side of the storage portion, and The above hood panel is An electric vehicle battery system comprising a sealing rib provided on the inner side of the hood panel to press the sealing member.

Description

Battery System for Electric Vehicles The present invention relates to a battery system for an electric vehicle, and more specifically, to a battery system for an electric vehicle comprising a fixed main battery that provides main power to the vehicle and a detachable auxiliary battery that provides auxiliary power to the vehicle and power to the outside of the vehicle. Recently, electric vehicles (EVs) have been equipped with V2L (Vehicle to Load) functionality, enabling the use of vehicle electricity in various situations, such as camping. Here, the V2L function is capable of supplying power from the large, high-voltage battery installed in the electric vehicle to the outside of the vehicle; this can be achieved by connecting a standard household electronic device to a charging port installed on the exterior of the vehicle, which is provided for battery charging, via a connector. Since this V2L function allows the vehicle to be used as a power source, it enables the use of everyday electronic devices within the vehicle, thereby significantly increasing the vehicle's usability. However, as mentioned above, since this V2L function requires the use of the vehicle's external charging port, it entails the inconvenience of having to bring the external device to be powered close to the vehicle, taking into account the length of the connector. In addition, the V2L function can affect the driving range of an electric vehicle as it consumes power from the vehicle's battery. In particular, even if the driving range reflecting power consumption is displayed on the vehicle's display when using the V2L function in an electric vehicle, it is not easy for the user to plan their power consumption by judging the distance to the charging station and the amount of power consumed while using the V2L function, and consequently, there are difficulties in using the V2L function. FIG. 1 is a top view of a vehicle to which an electric vehicle battery system according to one embodiment of the present invention is applied. FIG. 2 is a perspective view illustrating a detachable auxiliary battery separated from a storage unit in a battery system for an electric vehicle according to one embodiment of the present invention. FIG. 3 is a perspective view illustrating a detachable auxiliary battery of an electric vehicle battery system according to one embodiment of the present invention. Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following embodiments are presented to sufficiently convey the concept of the present invention to those skilled in the art to which the present invention pertains. The present invention is not limited to the embodiments presented herein and may be embodied in other forms. In order to clarify the present invention, the drawings may omit the illustration of parts unrelated to the description and may slightly exaggerate the size of components to aid understanding. FIG. 1 is a top view of a vehicle to which an electric vehicle battery system according to an embodiment of the present invention is applied, and FIG. 2 is a perspective view showing a detachable auxiliary battery separated from a storage unit in an electric vehicle battery system according to an embodiment of the present invention. In addition, FIG. 3 is a perspective view showing a detachable auxiliary battery of an electric vehicle battery system according to an embodiment of the present invention. Referring to FIGS. 1 to 3, a battery system for an electric vehicle according to one embodiment of the present invention may include a fixed main battery (200) that provides driving power for a vehicle (100), a detachable auxiliary battery (300) that receives power from the fixed main battery (200) or supplies power to the fixed main battery (200), and a generator (400) that generates electrical energy through the kinetic energy of an electric motor for driving the vehicle (100). The vehicle (100) may include a storage section (120) formed so that a plurality of detachable auxiliary batteries (300) can be mounted on the frunk side, which is a space provided on the inside of the hood panel (110). More specifically, the storage section (120) may be provided in a box shape with an opening formed on the upper side. Additionally, the storage section (120) may include a sealing member (121) provided on the opening side so that it can be sealed with the space of the frunk excluding the storage section (120) when the hood panel (110) is closed. Here, the hood panel (110) is provided with a sealing rib (111) on the inner side so that when the hood panel (110) is closed, the sealing rib (111) presses the sealing member (121) to seal the storage section (120). Accordingly, when the hood panel (110) is closed, foreign substances including water can be prevented from entering the storage section (120) from the outside. Additionally, the storage unit (120) may include a first adapter (122) provide