KR-20260067465-A - HOME MODULAR TYPE ENERGY STORAGE SYSTEM UTILIZING RECYCLED BATTERIES

KR20260067465AKR 20260067465 AKR20260067465 AKR 20260067465AKR-20260067465-A

Abstract

The present invention comprises a modular battery pack (110) that is stacked in two or more sets and electrically connected to one another through a power connection terminal (112a) to enable charging and discharging and is assigned a unique ID; a master BMS (120) that monitors the status of a recycled waste battery (111) through a slave BMS (113) of two or more sets of modular battery packs (110); a control unit (130) that converts power and supplies it to an internal power grid (160) of a consumer and controls charging and discharging; and a monitoring unit (140) that monitors and displays the generated power, the power of the modular battery pack (110), and the power consumed by the internal power grid (160) of the consumer, and monitors the voltage, current, temperature, and SOC (State of Charge) of the recycled waste battery (111) to warn of overcharging, over-discharging, and overheating, thereby configuring a stacked modular battery pack using waste batteries to increase battery capacity and enable replacement. A modular type energy storage system is disclosed.

Inventors

장수연

Assignees

장수연

Dates

Publication Date: 20260513
Application Date: 20241105

Claims (6)

A modular battery pack comprising a recycled waste battery, a battery case formed in a box shape that covers the recycled waste battery and has a power connection terminal electrically connected to the recycled waste battery, and a slave BMS (Battery Management System) that maintains voltage balance between cells constituting the recycled waste battery and monitors the state of the recycled waste battery, wherein two or more sets are stacked and electrically connected to each other through the power connection terminal to enable charging and discharging, and are assigned a unique ID; A master BMS that monitors the status of the recycled waste battery through slave BMSs of the above two or more sets of modular battery packs; A control unit comprising: a first converter that converts power generated from a solar panel into DC/DC; an inverter that converts DC power from the modular battery pack into AC power and supplies it to the internal power grid of the consumer, and converts the DC power converted by the first converter into AC power and supplies it to the internal power grid of the consumer; and a control module that controls the charging of the modular battery pack by the solar panel and controls the discharge to the internal power grid of the consumer by the inverter according to the state of the recycled waste battery provided by the master BMS; and A monitoring unit that monitors and displays the generated power, the power of the modular battery pack, and the power consumption of the internal power grid of the consumer, and monitors the voltage, current, temperature, and SOC (State of Charge) of the recycled waste battery to warn of overcharging, over-discharging, and overheating; Home modular energy storage system utilizing recycled waste batteries.
In Article 1, The above recycled waste battery is characterized as being an LFP (Lithium Iron Phosphate) battery for electric vehicles, Home modular energy storage system utilizing recycled waste batteries.
In Article 1, The above modular battery pack is characterized by being stacked and electrically connected by the power connection terminals to increase the battery capacity. Home modular energy storage system utilizing recycled waste batteries.
In Article 1, The above monitoring unit is characterized by monitoring the state of the modular battery pack according to a preset State of Health (SOH) threshold, and generating and propagating replacement request information for the corresponding modular battery pack that falls below the SOH threshold according to the unique ID. Home modular energy storage system utilizing recycled waste batteries.
In Article 4, Characterized by enabling the modular battery pack corresponding to the unique ID to be replaceable from the above two or more sets of modular battery packs. Home modular energy storage system utilizing recycled waste batteries.
In Article 1, The above control unit further includes a second converter that converts power generated from a wind power generation system into AC/DC, and The above inverter is characterized by converting the DC power converted by the above second converter into AC power and supplying it to the internal power grid of the above consumer. Home modular energy storage system utilizing recycled waste batteries.

Description

Home Modular Type Energy Storage System Utilizing Recycled Batteries The present invention relates to a household modular type energy storage system utilizing recycled waste batteries, which enables increased battery capacity and replaceability by constructing a stacked modular battery pack using waste batteries. As is well known, with the development of the automotive industry, the demand for lithium-ion battery-based electric vehicles is surging, and recycling measures are required for large-capacity waste batteries that are discarded after years of use. Consequently, the surge in demand for electric vehicles has generated a significant amount of waste batteries, causing serious environmental pollution; thus, there is a growing need for a virtuous social cycle through recycling and regeneration projects to utilize these batteries. In addition, as the need for the development of renewable energy-based independent home power microgrid systems and ESS-based storage devices increases due to global warming, there is a need to establish a foundation for eco-friendly energy independence by recycling waste lithium-ion batteries from electric vehicles to build solar-based home ESSs. Figure 1 illustrates a configuration diagram of a household modular type energy storage system utilizing recycled waste batteries according to an embodiment of the present invention. Figure 2 illustrates an implementation diagram of a household modular type energy storage system utilizing the recycled waste battery of Figure 1. Figure 3 illustrates a modular battery pack of a household modular type energy storage system utilizing recycled waste batteries of Figure 1. Figure 4 illustrates variations of a household modular type energy storage system utilizing recycled waste batteries of Figure 1. Figure 5 illustrates the cell structure of the modular battery pack of Figure 1. Hereinafter, embodiments of the present invention having the aforementioned features will be described in more detail with reference to the attached drawings. A household modular type energy storage system utilizing recycled waste batteries according to an embodiment of the present invention comprises: a modular battery pack (110) that is stacked in two or more sets and electrically connected to one another through a power connection terminal (112a) to enable charging and discharging and is assigned a unique ID; a master BMS (120) that monitors the status of recycled waste batteries (111) through a slave BMS (113) of two or more sets of modular battery packs (110); a control unit (130) that converts power and supplies it to an internal power grid (160) of a consumer and controls charging and discharging; and a monitoring unit (140) that monitors and displays the generated power, the power of the modular battery pack (110), and the power consumed by the internal power grid (160) of the consumer, and monitors the voltage, current, temperature, and SOC (State of Charge) of the recycled waste battery (111) to warn of overcharging, over-discharging, and overheating, thereby configuring a stacked modular battery pack using waste batteries to increase the battery capacity The main point is to enable expansion and replacement. Hereinafter, with reference to FIGS. 1 to 5, a household modular type energy storage system utilizing recycled waste batteries of the above-described configuration will be specifically described as follows. First, the modular battery pack (110), with reference to FIGS. 1 to 3, comprises a recycled waste battery (111) (see FIG. 5) in which a plurality of cells (111a) are connected in series and parallel, a battery case (112) formed in a box shape that covers the recycled waste battery (111) and has a power connection terminal (112a) electrically connected to the recycled waste battery (111), and a slave BMS (Battery Management System) (113) that maintains voltage balance between the cells (111a) constituting the recycled waste battery (111) and monitors the state of the recycled waste battery (111). Here, the recycled waste battery (111) may be a waste battery for electric vehicles that has reached the end of its primary lifespan but has some remaining capacity, and can be used as a household power storage device after confirming the exact remaining capacity, for example, it may be an LFP (Lithium Iron Phosphate, LiFePO4 ) battery for electric vehicles that has high safety and durability and has little performance degradation even after several charge-discharge cycles, capable of 2,000 to 3,000 or more charge-discharge cycles. Additionally, the modular battery pack (110) can be individually assigned a unique ID and registered in the master BMS (120), and as illustrated in FIG. 3, two or more sets can be stacked and electrically connected to each other through power connection terminals (112a) to enable charging and discharging. Meanwhile, as illustrated in FIGS. 2 and 3, two or more modular battery packs (110) are stacked vertically and electrically co