KR-20260065141-A - Battery storage and charging device

Abstract

The present invention relates to a lithium-ion battery storage and charging device, and more specifically, to a lithium-ion battery storage and charging device that enables charging during storage and allows for safer storage of the lithium-ion battery. A lithium-ion battery storage and charging device according to the present invention includes a housing, a charging means, an insulating wall, a shock absorption means, a temperature sensor means, a gas sensor, a cooling means, and a control means to store a battery in a sealed manner. The housing has a receiving portion formed inside and is equipped with an opening/closing portion capable of opening and closing one side. The charging means comprises a charging terminal portion to which a battery housed in the receiving portion can be connected, a power supply portion that supplies power to the charging terminal portion, and a charge amount measuring portion that measures the current and voltage of the battery to check the charge amount of the battery. The insulating wall is mounted on the inner wall of the housing to prevent heat generated from the battery from being transferred to the outside. The shock absorption means is mounted on the insulating wall to surround the battery housed in the receiving portion so as to absorb the explosive force to protect the insulating wall in the event of an explosion of the battery. The temperature sensor means comprises an internal temperature sensor that detects the temperature inside the housing and a terminal temperature sensor that measures the temperature of the charging terminal portion to which current is supplied to the battery. The gas sensor detects gas inside the housing. The cooling means comprises a cooling liquid tank for storing cooling liquid, a pipe connected from the cooling liquid tank to the interior of the housing so as to spray the cooling liquid from the cooling liquid tank onto the battery, and a plurality of spray nozzles mounted on the pipe to spray the cooling liquid. The control means comprises a power control unit that cuts off the power supplied to the charging terminal unit when the battery is fully charged at the charge amount measuring unit and cuts off the power supplied to the charging terminal unit when a temperature above a certain level is detected at the terminal temperature sensor, and a fire judgment unit that sprays the cooling liquid through the spray nozzles when a temperature above a certain level is detected at the internal temperature sensor or when off-gas is detected at the gas sensor. According to the present invention, a charging means is provided to measure the charge amount of a battery contained in a receiving portion and charge the battery, and when the charging of the battery is completed, the power is cut off. Thus, even if the battery is stored for a long period of time, the performance of the battery can be prevented from deteriorating, and overcharging of the battery can be prevented to prevent overheating. In addition, according to the present invention, a housing is formed with an internal receiving portion, an insulating wall is mounted on the inner wall of the housing, and a shock-absorbing means is mounted inside the insulating wall. In this case, the battery is received in the receiving portion of the housing and is enclosed by the shock-absorbing means and the insulating wall inside the housing, thereby reducing the impact of external shocks and external temperature changes. Thus, the battery can be stored more stably. In addition, according to the present invention, the temperature sensor means and the gas sensor are mounted inside the housing to detect heat and gas generated from the battery, and the cooling means sprays a cooling liquid onto the battery to extinguish the fire in the event of a fire in the battery. Therefore, the fire can be suppressed more quickly in the event of a fire. In addition, according to the present invention, by providing an insulating wall and a shock-absorbing means, when a battery explodes due to thermal runaway, the shock-absorbing means primarily absorbs the shock, and the insulating wall prevents heat from the battery explosion from being transferred to the outside. Therefore, when a battery fire occurs, secondary damage caused by the explosion can be reduced. In addition, according to the present invention, by providing a terminal temperature sensor that measures the temperature of the charging terminal, the temperature of the battery connected to the charging terminal can be measured. Thus, if an overheating phenomenon of the battery being charged is detected, the power can be cut off even if it is not in a fully charged state, thereby preventing a fire caused by overheating.

Inventors

• 전태구
• 이상식
• 성주경

Assignees

• 주식회사 아산에스앤테크

Dates

Publication Date

20260508

Application Date

20241101

Claims (3)

1. A housing having a receiving portion formed inside and an opening/closing portion capable of opening and closing one side, and A charging means comprising a charging terminal portion to which a battery accommodated in the above-mentioned receiving portion can be connected, a power supply portion that supplies power to the charging terminal portion, and a charging amount measuring portion that measures the current and voltage of the battery to check the charging amount of the battery, and In order to prevent heat generated from the above battery from being transferred to the outside, an insulating wall mounted on the inner wall of the housing, and A shock-absorbing means mounted on the insulating wall to surround the battery housed in the receiving portion so as to absorb the explosive force in order to protect the insulating wall in the event of an explosion of the battery, and A temperature sensor means comprising an internal temperature sensor for detecting the temperature inside the housing and a terminal temperature sensor for measuring the temperature of the charging terminal to which current is supplied to the battery, and A gas sensor that detects gas inside the above housing, and A cooling means comprising a cooling liquid tank for storing a cooling liquid, a pipe connected from the cooling liquid tank to the interior of the housing so as to spray the cooling liquid of the cooling liquid tank onto the battery, and a plurality of spray nozzles mounted on the pipe to spray the cooling liquid. A lithium-ion battery storage and charging device characterized by storing the battery in a sealed manner, comprising a power control unit that cuts off the power supplied to the charging terminal unit when the battery is fully charged at the charge amount measuring unit and cuts off the power supplied to the charging terminal unit when a certain temperature or higher is detected at the terminal temperature sensor, and a fire judgment unit that sprays the cooling liquid through the spray nozzle when a certain temperature or higher is detected at the internal temperature sensor or off-gas is detected at the gas sensor.
2. In paragraph 1, the power control unit A lithium-ion battery storage and charging device characterized by cutting off the power of the power supply unit when the coolant is sprayed through the spray nozzle in the fire judgment unit.
3. In paragraph 2, the shock-absorbing means is A plurality of plates provided so as to surround the insulation wall, with a cross-section formed in a corrugated shape to protect the insulation wall, and A lithium-ion battery storage and charging device characterized by having a support frame that supports each of the plates, wherein one side of the vertical bar is mounted inside the insulating wall and the other side is mounted on the plate and spaced apart at a certain interval to support the plate in the longitudinal direction, and the other side is mounted on the plate and spaced apart at a certain interval to support the plate in the axial direction.

Description

Lithium-ion battery storage and charging device The present invention relates to a lithium-ion battery storage and charging device, and more specifically, to a lithium-ion battery storage and charging device that enables charging during storage and allows for safer storage of the lithium-ion battery. Generally, a secondary battery refers to a battery that can be used by repeatedly charging and discharging, and utilizes the phenomenon in which chemical energy and electrical energy are converted through electrochemical reactions in which internal active materials are oxidized and reduced by charging and discharging. Lithium-ion batteries are representative secondary batteries that have higher energy density and power density compared to other batteries and are high-performance batteries that can be recharged and used repeatedly. They are used as power sources in various fields, such as portable consumer electronics, electric vehicles, power storage devices, and medical devices. If lithium-ion batteries are left unused for a long time after being fully charged, their lifespan may be shortened or there is a risk of ignition. Furthermore, if they undergo natural discharge and fall below the cutoff voltage, they become unusable even after charging. Therefore, to store lithium-ion batteries for a long period, it is necessary to manage the battery voltage to maintain it above the cutoff voltage. However, this presented the inconvenience of requiring users to frequently check the battery voltage and perform charging or discharging. Additionally, lithium-ion batteries posed a risk of chain explosions if the temperature rose and thermal runaway occurred. FIG. 1 is a conceptual diagram of one embodiment of a lithium-ion battery storage and charging device according to the present invention, and FIG. 2 is a conceptual diagram of the storage means and charging means of the embodiment illustrated in FIG. 1, and FIG. 3 is a conceptual diagram of the shock absorption means of the embodiment illustrated in FIG. 1, and Figure 4 is a conceptual diagram of the operation of the embodiment shown in Figure 1. An embodiment of a lithium-ion battery storage and charging device according to the present invention will be described with reference to FIGS. 1 to 4. The lithium-ion battery storage and charging device according to the present invention serves to charge a battery (B) and store it in a sealed state. To this end, the lithium-ion battery storage and charging device includes a housing (10), a charging means (20), an insulating wall (30), a shock absorption means (40), a temperature sensor means (50), a gas sensor (60), a cooling means (70), and a control means (80). A housing (10) accommodates a battery (B) inside and is equipped with an insulating wall (30), a shock-absorbing means (40), and an internal temperature sensor (51). To this end, the housing (10) has a receiving section (11) formed inside and is provided with an opening/closing section (not shown) that can open or close one side. Thus, when storing the battery (B), the opening/closing section is opened to accommodate the battery (B) in the receiving section (11) of the housing (10), and then the opening/closing section is closed to seal the interior of the housing (10). In the case of this embodiment, the housing (10) is provided with a rack (12) in the receiving section (11), and multiple batteries (B) are stored by being loaded onto the rack (12). The charging means (20) measures the charge amount of the battery (B) received in the receiving portion (11) and charges it. To this end, the charging means (20) is equipped with a charging terminal portion (21), a power supply portion (23), and a charge amount measuring portion (25). The charging terminal portion (21) is electrically connected to the battery (B) loaded in the rack (12) provided in the housing (10) and is mounted on the inside of the receiving portion (11) so as to enable charging of the battery (B). Here, a plurality of charging terminal portions (21) are provided so as to be able to charge each of the plurality of batteries (B) loaded in the rack (12). The power supply unit (23) supplies power to the charging terminal unit (21) to charge the battery (B). To this end, the power supply unit (23) receives power from an external power source and supplies power to the charging terminal unit (21). The charge level measuring unit (25) serves to measure the current and voltage of the battery (B). To this end, the charge level measuring unit (25) is connected to the charging terminal unit (21) to measure the current and voltage of the battery (B). Thus, when the battery (B) is connected to the charging terminal unit (21), the current and voltage of the battery (B) can be measured to check the charge level of the battery (B). The insulating wall (30) serves to prevent heat generated from the battery (B) from being transferred to the outside. To this end, the insulating wall (30) is mounted on the inner wall of t