BATTERY PACK

• Main Author: MATSUI NOBUO
• Format: Patent
• Language: English; Japanese
• Published: 23.12.2021
• Subjects: BASIC ELECTRIC ELEMENTS; CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES ORLIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

To provide a battery pack capable of appropriately suppressing the occurrence of a chain of overheating from among a plurality of secondary batteries.SOLUTION: A set of two secondary batteries 10A to 10E adjacent to each other and connected in series is referred to as a series connection unit. Series connection bus bars 20A to 20D electrically connect positive electrode terminals 15A to 15E of one secondary battery and negative electrode terminals 16A to 16E of the other secondary battery in the series connection unit. A short-circuit bus bar 30 is installed between the negative electrode terminal of one secondary battery and the positive electrode terminal of the other secondary battery in the series connection unit, and is installed between the positive electrode terminal and the negative electrode terminal of each secondary battery. The short-circuit bus bar passes through a flow path of the gas discharged from safety valves 14A to 14E. An insulating portion 40 cuts off the conduction between the terminals by the short-circuiting bus bar while being installed in the short-circuiting bus bar, and short-circuits the secondary battery by being heated and melted.SELECTED DRAWING: Figure 1 【課題】複数の二次電池の間で過昇温が連鎖して発生することを適切に抑制することが可能な組電池を提供する。【解決手段】互いに隣接し、且つ直列に接続される２つの二次電池１０Ａ〜１０Ｅの組を、直列接続ユニットとする。直列接続バスバー２０Ａ〜２０Ｄは、直列接続ユニットにおける一方の二次電池の正極端子１５Ａ〜１５Ｅと他方の二次電池の負極端子１６Ａ〜１６Ｅを電気的に接続する。短絡用バスバー３０は、直列接続ユニットにおける一方の二次電池の負極端子と他方の二次電池の正極端子の間に架設されると共に、各々の二次電池の正極端子と負極端子の間に架設される。短絡用バスバーは、安全弁１４Ａ〜１４Ｅから排出される気体の流路を通過する。絶縁部４０は、短絡用バスバーに設置されている状態で短絡用バスバーによる端子間の導通を遮断すると共に、加熱溶融されることで二次電池を短絡させる。【選択図】図１