고온 저장 성능과 대전류 성능이 우수한 비수전해질 전지, 비수전해질 전지를 포함하는 전지 팩, 전지 팩을 포함하는 차량을 제공한다. 실시 형태에 따르면, 정극과, 부극과, 비수전해질을 포함하는 비수전해질 전지가 제공된다. 정극은, 정극 활물질 2차 입자와, 피복층을 포함한다. 정극 활물질 2차 입자의 평균 2차 입자 직경은 3㎛ 이상 25㎛ 이하이다. 피복층은, 정극 활물질 2차 입자의 표면의 적어도 일부를 피복한다. 또한, 피복층은, 리튬티타늄 산화물을 포함하고, 두께가 3nm 이상 30nm 이하이다. 정극과 부극의 최단 거리가 12㎛ 이하이다.
According to one approach, a nonaqueous electrolyte battery includes a positive electrode (3), a negative electrode (4), and a nonaqueous electrolyte. The positive electrode (3) includes positive electrode active material secondary particles and a layer. An average secondary particle size of the positive electrode active material secondary particles is from 3 µm to 25 µm. The layer covers at least a portion of surfaces of the positive electrode active material secondary particles. The layer contains a lithium titanium oxide and has a thickness of 3 nm to 30 nm. A shortest distance between the positive electrode (3) and the negative electrode (4) is 12 µm or less.
NON-AQUEOUS ELECTROLYTE BATTERY BATTERY PACK AND VEHICLE
비수전해질 전지, 전지 팩 및 차량
2020-08-31
Patent
Electronic Resource
Korean
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / H01M Verfahren oder Mittel, z.B. Batterien, für die direkte Umwandlung von chemischer in elektrische Energie , PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY |
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