BATTERY PACK WITH IMPROVED SAFETY

• Main Authors: KIM, Kiyoun, CHOI, Dongmin, AHN, Jong Kyu, KIM, Youngbum, YUN, Youngwon, KIM, Yongmin
• Format: Patent
• Language: English; French; Korean
• Published: 19.09.2024
• Subjects: AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING; BASIC ELECTRIC ELEMENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS; CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING ORPROTECTING AGAINST HARMFUL CHEMICAL AGENTS; ELECTRICITY; FIRE-FIGHTING; HUMAN NECESSITIES; LIFE-SAVING; PERFORMING OPERATIONS; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR; SHAPING OR JOINING OF PLASTICS; TRANSPORTING; WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

A battery pack according to an embodiment of the present invention comprises: a cell module assembly comprising a battery cell stack in which a plurality of battery cells are stacked; a pack case which accommodates the cell module assembly and of which the top surface is open; and a fire-extinguishing tank covering the top surface of the cell module assembly, wherein the fire-extinguishing tank has an interior space for accommodating a fire-extinguishing agent, and a plurality of vulnerable portions which are portions formed to be relatively thin in a base plate of the fire-extinguishing tank and may melt and form an opening therein upon overheating of the battery cell, and portions of the base plate of the fire-extinguishing tank which are located above electrode leads of the battery cells are shaped to protrude downward toward the electrode leads of the battery cells. Un bloc-batterie selon un mode de réalisation de la présente invention comprend : un ensemble module d'éléments comprenant un empilement d'éléments de batterie dans lequel une pluralité d'éléments de batterie sont empilés ; un boîtier de bloc qui reçoit l'ensemble module d'éléments et dont la surface supérieure est ouverte ; et un réservoir d'extinction d'incendie recouvrant la surface supérieure de l'ensemble module d'éléments, le réservoir d'extinction d'incendie ayant un espace intérieur pour recevoir un agent d'extinction d'incendie, et une pluralité de parties vulnérables qui sont des parties formées pour être relativement minces dans une plaque de base du réservoir d'extinction d'incendie et peuvent fondre et former une ouverture à l'intérieur lors de la surchauffe de l'élément de batterie, et des parties de la plaque de base du réservoir d'extinction d'incendie qui sont situées au-dessus des fils d'électrode des éléments de batterie sont formées pour faire saillie vers le bas vers les fils d'électrode des éléments de batterie. 본 발명의 일 실시예에 따른 전지 팩은: 복수의 전지 셀들이 적층된 전지 셀 적층체를 포함하는 셀 모듈 어셈블리; 상기 셀 모듈 어셈블리가 수납되고 상면이 개구된 형상의 팩 케이스; 및 상기 셀 모듈 어셈블리의 상부면을 커버하는 소화 탱크를 포함하고, 상기 소화 탱크는: 소화제를 수용하는 내부 공간; 및 상기 소화 탱크의 베이스판의 두께가 상대적으로 얇게 형성된 부분으로서, 상기 전지 셀의 과열에 의해 용융되어 개구되는 복수 개의 취약부를 포함하고, 상기 소화 탱크의 베이스판 중 상기 전지 셀의 전극 리드 위에 위치하는 부분은 상기 전지 셀의 상기 전극 리드를 향하여 아래로 돌출된 형상을 가진다.