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零下60℃的新型耐低溫磷酸鐵鋰電池

2022-04-16

磷酸鐵鋰電池

近工程師們開發(fā)出了一種低溫磷酸鐵鋰電池,能夠在低至零下60攝氏度的溫度下保持正常的溫度性能。目前可以投放市場(chǎng)的低溫電池主要有低溫磷酸鐵鋰電池和聚合物低溫鋰電池,這兩種低溫電池技術(shù)都比較成熟。

與目前在零下20攝氏度停止工作的鋰離子電池相比,磷酸鐵鋰電池可以在零下60攝氏度的低溫下工作,具有非常好的性能。與目前的-40°C的低溫極限相比,電解液還能使電化學(xué)電容器在-80°C的低溫下工作。該技術(shù)可以在極低溫下工作,而且在室溫下仍能保持高性能。這種新型的電解液化學(xué)品還可以增加能量密度,提高鋰電池和電化學(xué)電容器的安全性。

這項(xiàng)技術(shù)還可以用于在極端寒冷條件下為飛機(jī)提供動(dòng)力,如無人機(jī)、衛(wèi)星、星際探測(cè)器和其他航空航天應(yīng)用。磷酸鐵鋰電池具有以下優(yōu)點(diǎn):

1、低溫放電性能高,在-40℃時(shí)以0.2C低放電,效率達(dá)80%以上;在-30℃時(shí),放電能力達(dá)85%以上;

2、工作溫度范圍寬,-40℃~ 50℃;

3、低溫循環(huán)性能優(yōu)異,在-30℃環(huán)境下0.2C充放電,300次循環(huán)后容量保持在85%以上;

4、安全性能高,可定制電池尺寸;

5、在-40℃下可產(chǎn)生大電流,保持大容量和優(yōu)異性能。

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