{"id":19780,"date":"2022-11-10T07:30:09","date_gmt":"2022-11-10T07:30:09","guid":{"rendered":"http:\/\/dgbellvietnam.com\/low-pressure-environment-and-thermal-runaway\/"},"modified":"2024-10-24T16:24:18","modified_gmt":"2024-10-24T09:24:18","slug":"low-pressure-environment-and-thermal-runaway","status":"publish","type":"post","link":"https:\/\/dgbellvietnam.com\/en\/low-pressure-environment-and-thermal-runaway\/","title":{"rendered":"M\u00f4i tr\u01b0\u1eddng \u00e1p su\u1ea5t th\u1ea5p v\u00e0 s\u1ef1 m\u1ea5t nhi\u1ec7t"},"content":{"rendered":"
\n

Trong khi pin lithium mang l\u1ea1i s\u1ef1 ti\u1ec7n l\u1ee3i cho cu\u1ed9c s\u1ed1ng c\u1ee7a con ng\u01b0\u1eddi, th\u00ec s\u1ef1 an to\u00e0n c\u1ee7a n\u00f3 c\u0169ng \u0111\u01b0\u1ee3c m\u1ecdi ng\u01b0\u1eddi quan t\u00e2m. S\u1ef1 \u0111\u1ed1t ch\u00e1y d\u1eef d\u1ed9i c\u1ee7a ch\u1ea5t \u0111i\u1ec7n ph\u00e2n s\u1ebd xuy\u00ean qua t\u1ea5m kim lo\u1ea1i v\u00e0 gi\u1edbi h\u1ea1n n\u1ed5 c\u1ee7a kh\u00ed nhi\u1ec7t ph\u00e2n cao h\u01a1n gi\u1edbi h\u1ea1n n\u1ed5 c\u1ee7a hydrocarbon. Ph\u1ea3n \u1ee9ng nhi\u1ec7t \u0111\u1ed9 cao c\u1ee7a pin lithium d\u1ec5 g\u00e2y ra c\u00e1c s\u1ef1 ki\u1ec7n nguy hi\u1ec3m v\u00e0 \u0111\u1eb7c t\u00ednh nhi\u1ec7t \u0111\u1ed9 cao c\u1ee7a n\u00f3 l\u00e0 m\u1ed9t th\u00f4ng s\u1ed1 quan tr\u1ecdng v\u00e0 c\u01a1 b\u1ea3n c\u1ee7a nguy c\u01a1 h\u1ecfa ho\u1ea1n. Do \u0111\u00f3, c\u1ea7n ph\u1ea3i kh\u00e1m ph\u00e1 t\u00e1c \u0111\u1ed9ng c\u1ee7a m\u00f4i tr\u01b0\u1eddng \u0111i\u1ec7n \u00e1p th\u1ea5p \u0111\u1ebfn nhi\u1ec7t \u0111\u1ed9 gi\u1ea3i ph\u00f3ng nhi\u1ec7t \u0111\u1ed9 cao c\u1ee7a pin lithium \u0111\u1ec3 gi\u1ea3m nguy c\u01a1 s\u1eed d\u1ee5ng ch\u00fang.<\/span><\/span><\/p>\n

1. T\u1ed5ng quan v\u1ec1 hi\u1ec7n t\u01b0\u1ee3ng tho\u00e1t nhi\u1ec7t<\/span><\/a> c\u1ee7a pin lithium<\/span><\/span><\/strong><\/span><\/h1>\n

Qu\u00e1 tr\u00ecnh ch\u1ea1y tr\u1ed1n nhi\u1ec7t c\u1ee7a pin lithium bao g\u1ed3m hai d\u1ea1ng: n\u1ed5 s\u01a1 c\u1ea5p v\u00e0 n\u1ed5 ch\u00e1y. Trong giai \u0111o\u1ea1n n\u1ed5 s\u01a1 c\u1ea5p, nhi\u1ec7t \u0111\u1ed9 b\u00ean trong pin lithium s\u1ebd t\u0103ng l\u00ean. N\u1ebfu \u00e1p su\u1ea5t t\u0103ng, c\u1ed5ng x\u1ea3 \u00e1p c\u1ee7a pin lithium s\u1ebd m\u1edf ra v\u00e0 kh\u00f3i s\u1ebd li\u00ean t\u1ee5c tho\u00e1t ra. Trong qu\u00e1 tr\u00ecnh n\u1ed5 ch\u00e1y, pin lithium s\u1ebd g\u1eb7p v\u1ea5n \u0111\u1ec1 phun nghi\u00eam tr\u1ecdng. M\u1ed9t l\u01b0\u1ee3ng l\u1edbn c\u00e1c ch\u1ea5t ph\u00e1t s\u00e1ng c\u00f3 nhi\u1ec7t \u0111\u1ed9 cao s\u1ebd \u0111\u01b0\u1ee3c phun ra t\u1eeb c\u1ef1c d\u01b0\u01a1ng c\u1ee7a pin v\u00e0 qu\u00e1 tr\u00ecnh \u0111\u1ed1t ch\u00e1y th\u1ee9 c\u1ea5p s\u1ebd \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n c\u00f9ng l\u00fac.<\/span><\/span><\/p>\n

Trong m\u00f4i tr\u01b0\u1eddng \u0111i\u1ec7n \u00e1p th\u1ea5p, kh\u00f3i tho\u00e1t ra trong qu\u00e1 tr\u00ecnh n\u1ed5 s\u01a1 c\u1ea5p do nhi\u1ec7t c\u1ee7a pin lithium m\u1ea5t nhi\u1ec1u th\u1eddi gian, s\u1ebd kh\u00f4ng ch\u00e1y sau khi qu\u00e1 tr\u00ecnh phun ho\u00e0n t\u1ea5t v\u00e0 \u0111\u1ed9 s\u00e1ng c\u1ee7a v\u1eadt li\u1ec7u phun ra c\u0169ng s\u1ebd gi\u1ea3m. Trong b\u00e0i b\u00e1o n\u00e0y, c\u00e1c th\u00ed nghi\u1ec7m ph\u1ea3n \u1ee9ng nhi\u1ec7t tho\u00e1t ra \u0111\u00e3 \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n tr\u00ean nhi\u1ec1u lo\u1ea1i pin lithium trong c\u00e1c m\u00f4i tr\u01b0\u1eddng \u00e1p su\u1ea5t kh\u00e1c nhau l\u00e0 30kPa, 60kPa v\u00e0 101kPa \u0111\u1ec3 nghi\u00ean c\u1ee9u \u1ea3nh h\u01b0\u1edfng c\u1ee7a \u00e1p su\u1ea5t \u0111\u1ebfn nhi\u1ec7t \u0111\u1ed9 gi\u1ea3i ph\u00f3ng nhi\u1ec7t tho\u00e1t ra c\u1ee7a \u0111i\u1ec7n c\u1ef1c d\u01b0\u01a1ng c\u1ee7a pin.<\/span><\/span><\/p>\n

2. \u1ea2nh h\u01b0\u1edfng c\u1ee7a m\u00f4i tr\u01b0\u1eddng <\/span><\/span>\u00e1p su\u1ea5t th\u1ea5p<\/span><\/span><\/a> \u0111\u1ebfn s\u1ef1 tho\u00e1t nhi\u1ec7t c\u1ee7a pin\u00a0<\/span><\/span><\/strong><\/span><\/h1>\n

<\/a><\/p>\n

2.1 T\u00e1c \u0111\u1ed9ng c\u1ee7a m\u00f4i tr\u01b0\u1eddng \u00e1p su\u1ea5t th\u1ea5p \u0111\u1ebfn nhi\u1ec7t \u0111\u1ed9 c\u1ee7a cell pin lithium ion<\/span><\/span><\/strong><\/span><\/h2>\n

Trong qu\u00e1 tr\u00ecnh ch\u00e1y n\u1ed5 do nhi\u1ec7t c\u1ee7a pin lithium, khi \u0111i\u1ec7n t\u00edch c\u1ee7a pin kh\u00e1c nhau, \u00e1p su\u1ea5t xung quanh gi\u1ea3m s\u1ebd d\u1eabn \u0111\u1ebfn nhi\u1ec7t \u0111\u1ed9 ph\u1ea3n \u1ee9ng c\u1ee7a th\u00e2n pin t\u0103ng l\u00ean. Do \u0111\u00f3, \u00e1p su\u1ea5t c\u00e0ng l\u1edbn th\u00ec kh\u1ea3 n\u0103ng n\u1ed5 pin lithium c\u00e0ng l\u1edbn. \u0110\u1ed3ng th\u1eddi, nhi\u1ec7t \u0111\u1ed9 ch\u00e1y c\u1ee7a th\u00e2n pin lithium c\u0169ng s\u1ebd gi\u1ea3m khi \u0111i\u1ec7n t\u00edch t\u0103ng v\u00e0 qu\u00e1 tr\u00ecnh n\u00e0y s\u1ebd kh\u00f4ng b\u1ecb \u1ea3nh h\u01b0\u1edfng b\u1edfi m\u00f4i tr\u01b0\u1eddng \u00e1p su\u1ea5t. Khi \u0111i\u1ec7n t\u00edch l\u00e0 100%, 50% v\u00e0 0%, nhi\u1ec7t \u0111\u1ed9 t\u1ed1i \u0111a c\u1ee7a pin lithium s\u1ebd t\u0103ng khi \u00e1p su\u1ea5t t\u0103ng. \u00c1p su\u1ea5t c\u00e0ng th\u1ea5p th\u00ec nguy c\u01a1 \u0111\u00e1nh l\u1eeda v\u00e0 n\u1ed5 c\u1ee7a pin lithium c\u00e0ng th\u1ea5p. Ngo\u00e0i ra, nhi\u1ec7t \u0111\u1ed9 t\u1ed1i \u0111a c\u1ee7a pin lithium d\u01b0\u1edbi c\u00e1c \u00e1p su\u1ea5t kh\u00e1c nhau s\u1ebd t\u0103ng khi \u0111i\u1ec7n t\u00edch t\u0103ng.<\/span><\/span><\/p>\n

2.2 \u1ea2nh h\u01b0\u1edfng c\u1ee7a m\u00f4i tr\u01b0\u1eddng \u00e1p su\u1ea5t th\u1ea5p \u0111\u1ebfn nhi\u1ec7t \u0111\u1ed9 c\u1ee7a c\u1ed5ng phun pin lithium ion<\/span><\/span><\/strong><\/span><\/h2>\n

Trong ph\u1ea3n \u1ee9ng nhi\u1ec7t \u0111\u1ed9 t\u0103ng v\u1ecdt, nhi\u1ec7t \u0111\u1ed9 \u1edf \u0111\u1ea7u ra c\u1ee7a c\u1ef1c d\u01b0\u01a1ng c\u1ee7a pin l\u00e0 nhi\u1ec7t \u0111\u1ed9 gi\u1ea3i ph\u00f3ng do ph\u1ea3n \u1ee9ng nhi\u1ec7t \u0111\u1ed9 t\u0103ng v\u1ecdt. Ngu\u1ed3n n\u0103ng l\u01b0\u1ee3ng gi\u1ea3i ph\u00f3ng nhi\u1ec7t \u0111\u1ed9 t\u0103ng v\u1ecdt ch\u1ee7 y\u1ebfu bao g\u1ed3m c\u00e1c n\u1ed9i dung sau: Th\u1ee9 nh\u1ea5t, n\u0103ng l\u01b0\u1ee3ng gi\u1ea3i ph\u00f3ng do ph\u1ea3n \u1ee9ng \u0111\u1ed1t ch\u00e1y th\u1ee9 c\u1ea5p c\u1ee7a c\u00e1c ch\u1ea5t d\u1ec5 ch\u00e1y v\u00e0 d\u1ec5 b\u1eaft l\u1eeda do nhi\u1ec7t \u0111\u1ed9 t\u0103ng v\u1ecdt t\u1ea1o ra trong nhi\u1ec1u m\u00f4i tr\u01b0\u1eddng \u00e1p su\u1ea5t kh\u00e1c nhau. Th\u1ee9 hai, v\u1eadt li\u1ec7u nhi\u1ec7t \u0111\u1ed9 cao v\u00e0 n\u0103ng l\u01b0\u1ee3ng gi\u1ea3i ph\u00f3ng do ph\u1ea3n \u1ee9ng nhi\u1ec7t \u0111\u1ed9 t\u0103ng v\u1ecdt b\u00ean trong pin lithium. Th\u00f4ng qua c\u00e1c th\u00ed nghi\u1ec7m l\u1eb7p l\u1ea1i trong c\u00e1c m\u00f4i tr\u01b0\u1eddng \u00e1p su\u1ea5t kh\u00e1c nhau l\u00e0 30kPa, 60kPa v\u00e0 101kPa, c\u00f3 th\u1ec3 th\u1ea5y r\u1eb1ng m\u00f4i tr\u01b0\u1eddng \u00e1p su\u1ea5t th\u1ea5p s\u1ebd c\u00f3 nhi\u1ec1u t\u00e1c \u0111\u1ed9ng \u0111\u1ebfn nhi\u1ec7t \u0111\u1ed9 m\u00f4i tr\u01b0\u1eddng do nhi\u1ec7t \u0111\u1ed9 t\u0103ng v\u1ecdt c\u1ee7a pin lithium g\u00e2y ra, c\u00f3 th\u1ec3 chia th\u00e0nh c\u00e1c kh\u00eda c\u1ea1nh sau:<\/span><\/span><\/p>\n

(1) M\u00f4i tr\u01b0\u1eddng \u00e1p su\u1ea5t 30kPa<\/span><\/span><\/span><\/h3>\n

Trong m\u00f4i tr\u01b0\u1eddng \u00e1p su\u1ea5t th\u1ea5p 30kPa, nhi\u1ec7t \u0111\u1ed9 gi\u1ea3i ph\u00f3ng nhi\u1ec7t \u0111\u1ed9 tho\u00e1t ra \u0111o \u0111\u01b0\u1ee3c t\u1ea1i \u0111\u1ea7u ra ph\u1ea3n l\u1ef1c d\u01b0\u01a1ng c\u1ee7a pin ch\u1ee7 y\u1ebfu \u0111\u01b0\u1ee3c chia th\u00e0nh n\u0103m \u0111\u1ec9nh: 1~4 \u0111\u1ec9nh nhi\u1ec7t \u0111\u1ed9 cao t\u1eadp trung trong ph\u1ea3n \u1ee9ng nhi\u1ec7t \u0111\u1ed9 tho\u00e1t ra c\u1ee7a b\u1ea3y pin; \u0111\u1ec9nh 1 v\u00e0 2 x\u1ea3y ra trong ph\u1ea3n \u1ee9ng nhi\u1ec7t \u0111\u1ed9 tho\u00e1t ra th\u1ee9 nh\u1ea5t v\u00e0 th\u1ee9 hai, v\u1edbi chi\u1ec1u r\u1ed9ng \u0111\u1ec9nh h\u1eb9p v\u00e0 th\u1eddi gian nhi\u1ec7t \u0111\u1ed9 cao ng\u1eafn; M\u1ed9t ph\u1ea7n gi\u00e1 tr\u1ecb \u0111\u1ec9nh 3 v\u00e0 4 xu\u1ea5t hi\u1ec7n trong giai \u0111o\u1ea1n ph\u1ea3n \u1ee9ng nhi\u1ec7t \u0111\u1ed9 tho\u00e1t ra th\u1ee9 ba \u0111\u1ebfn th\u1ee9 b\u1ea3y c\u1ee7a pin lithium, trong \u0111\u00f3 nhi\u1ec7t \u0111\u1ed9 c\u1ee7a gi\u00e1 tr\u1ecb \u0111\u1ec9nh 3 th\u1ea5p h\u01a1n, trong khi gi\u00e1 tr\u1ecb \u0111\u1ec9nh 4 x\u1ea3y ra trong giai \u0111o\u1ea1n ph\u1ea3n \u1ee9ng nhi\u1ec7t \u0111\u1ed9 tho\u00e1t ra c\u1ee7a pin lithium ion ho\u00e0n t\u1ea5t. Nhi\u1ec7t \u0111\u1ed9 c\u1ee7a gi\u00e1 tr\u1ecb \u0111\u1ec9nh 4 g\u1ea7n v\u1edbi gi\u00e1 tr\u1ecb \u0111\u1ec9nh 5 v\u00e0 nhi\u1ec7t \u0111\u1ed9 cao h\u01a1n; Gi\u00e1 tr\u1ecb \u0111\u1ec9nh 5 xu\u1ea5t hi\u1ec7n sau khi ph\u1ea3n \u1ee9ng nhi\u1ec7t \u0111\u1ed9 tho\u00e1t ra ho\u00e0n t\u1ea5t. L\u00fac n\u00e0y, c\u00e1c ch\u1ea5t d\u1ec5 ch\u00e1y c\u00f2n l\u1ea1i phun ra t\u1eeb ion lithium v\u00e0 l\u1edbp v\u1ecf pin \u0111ang ch\u00e1y. Do \u0111\u00f3, nhi\u1ec7t \u0111\u1ed9 gi\u1ea3i ph\u00f3ng cao, chi\u1ec1u r\u1ed9ng c\u1ee7a gi\u00e1 tr\u1ecb \u0111\u1ec9nh l\u1edbn v\u00e0 nhi\u1ec7t \u0111\u1ed9 cao k\u00e9o d\u00e0i trong th\u1eddi gian d\u00e0i.<\/span><\/span><\/p>\n

Do \u0111\u00f3, s\u1ed1 l\u01b0\u1ee3ng \u0111\u1ec9nh nhi\u1ec7t \u0111\u1ed9 \u0111\u01b0\u1ee3c gi\u1ea3i ph\u00f3ng trong giai \u0111o\u1ea1n nhi\u1ec7t \u0111\u1ed9 t\u0103ng v\u1ecdt c\u1ee7a pin lithium trong m\u00f4i tr\u01b0\u1eddng \u00e1p su\u1ea5t th\u1ea5p 30kPa l\u00e0 nh\u1ecf, v\u00e0 chi\u1ec1u r\u1ed9ng v\u00e0 s\u1ed1 l\u01b0\u1ee3ng \u0111\u1ec9nh nhi\u1ec7t \u0111\u1ed9 cao th\u1ea5p h\u01a1n so v\u1edbi m\u00f4i tr\u01b0\u1eddng 60kPa, v\u00ec v\u1eady nguy c\u01a1 nhi\u1ec7t \u0111\u1ed9 cao c\u1ee7a pin th\u1ea5p h\u01a1n so v\u1edbi m\u00f4i tr\u01b0\u1eddng Yuli 60kPa. Ngo\u00e0i ra, n\u1ed3ng \u0111\u1ed9 oxy trong m\u00f4i tr\u01b0\u1eddng nu\u00f4i c\u1ea5y \u00e1p su\u1ea5t th\u1ea5p 30kPa th\u1ea5p, c\u00f3 th\u1ec3 \u1ee9c ch\u1ebf ph\u1ea3n \u1ee9ng nhi\u1ec7t \u0111\u1ed9 t\u0103ng v\u1ecdt d\u1eef d\u1ed9i b\u00ean trong c\u1ee7a pin lithium ion \u1edf m\u1ed9t m\u1ee9c \u0111\u1ed9 nh\u1ea5t \u0111\u1ecbnh, khi\u1ebfn c\u00e1c ch\u1ea5t d\u1ec5 ch\u00e1y kh\u00ed h\u1eefu c\u01a1 do ph\u1ea3n \u1ee9ng nhi\u1ec7t \u0111\u1ed9 t\u0103ng v\u1ecdt t\u1ea1o ra kh\u00f3 ti\u1ebfn h\u00e0nh ph\u1ea3n \u1ee9ng \u0111\u1ed1t ch\u00e1y th\u1ee9 c\u1ea5p trong m\u00f4i tr\u01b0\u1eddng \u00e1p su\u1ea5t th\u1ea5p. Ng\u01b0\u1eddi ta th\u1ea5y r\u1eb1ng ph\u1ea3n \u1ee9ng t\u1ecfa nhi\u1ec7t nhi\u1ec7t \u0111\u1ed9 t\u0103ng v\u1ecdt c\u1ee7a v\u1eadt li\u1ec7u b\u00ean trong pin ion kali 30kPa l\u00e0 l\u00fd do khi\u1ebfn nhi\u1ec7t \u0111\u1ed9 cao sinh ra trong m\u00f4i tr\u01b0\u1eddng \u00e1p su\u1ea5t th\u1ea5p.<\/span><\/span><\/p>\n

(2) M\u00f4i tr\u01b0\u1eddng \u00e1p su\u1ea5t 60kPa<\/span><\/span><\/span><\/h3>\n

Ph\u1ea3n \u1ee9ng nhi\u1ec7t \u0111\u1ed9 cao c\u1ee7a pin t\u1ea1o th\u00e0nh qu\u00e1 tr\u00ecnh ch\u00e1y v\u00e0 n\u1ed5 b\u1eb1ng c\u00e1ch phun c\u00e1c v\u1eadt li\u1ec7u s\u00e1ng v\u00e0 nhi\u1ec7t \u0111\u1ed9 cao, sau \u0111\u00f3 t\u1ea1o ra \u0111\u1ec9nh nhi\u1ec7t \u0111\u1ed9 cao. Khi m\u00f4i tr\u01b0\u1eddng \u00e1p su\u1ea5t l\u00e0 60kPa, pin lithium ion c\u00f3 7 ph\u1ea3n \u1ee9ng nhi\u1ec7t \u0111\u1ed9 cao. Th\u00f4ng qua vi\u1ec7c ph\u00e1t hi\u1ec7n nhi\u1ec7t \u0111\u1ed9 m\u00f4i tr\u01b0\u1eddng c\u1ee7a c\u1ed5ng phun pin lithium, ng\u01b0\u1eddi ta th\u1ea5y r\u1eb1ng c\u00f3 5 \u0111\u1ec9nh nhi\u1ec7t \u0111\u1ed9 cao nhi\u1ec7t \u0111\u1ed9 cao trong ph\u1ea3n \u1ee9ng, trong \u0111\u00f3 1 \u0111\u1ebfn 4 \u0111\u1ec9nh nhi\u1ec7t \u0111\u1ed9 cao ch\u1ee7 y\u1ebfu t\u1eadp trung \u1edf ph\u1ea3n \u1ee9ng nhi\u1ec7t \u0111\u1ed9 cao th\u1ee9 b\u1ea3y. Gi\u00e1 tr\u1ecb \u0111\u1ec9nh nhi\u1ec7t \u0111\u1ed9 cao c\u1ee7a ion lithium 5 xu\u1ea5t hi\u1ec7n sau khi ph\u1ea3n \u1ee9ng nhi\u1ec7t \u0111\u1ed9 cao c\u1ee7a b\u1ea3y pin ho\u00e0n t\u1ea5t. \u1ede giai \u0111o\u1ea1n n\u00e0y, pin ion kali phun c\u00e1c ch\u1ea5t d\u1ec5 ch\u00e1y v\u00e0 v\u1ecf nh\u1ef1a \u0111\u1ec3 t\u1ea1o th\u00e0nh \u0111\u1ec9nh nhi\u1ec7t \u0111\u1ed9 cao th\u00f4ng qua ph\u1ea3n \u1ee9ng \u0111\u1ed1t ch\u00e1y. Nhi\u1ec7t \u0111\u1ed9 c\u1ee7a c\u00e1c \u0111\u1ec9nh 2, 3 v\u00e0 4 l\u00e0 kho\u1ea3ng 800 \u2103 v\u00e0 nhi\u1ec7t \u0111\u1ed9 t\u1ed1i \u0111a l\u00e0 kho\u1ea3ng 1100 \u2103. Chi\u1ec1u r\u1ed9ng \u0111\u1ec9nh h\u1eb9p. So v\u1edbi m\u00f4i tr\u01b0\u1eddng \u00e1p su\u1ea5t 101kPa, b\u1ea3y ph\u1ea3n \u1ee9ng m\u1ea5t ki\u1ec3m so\u00e1t nhi\u1ec7t \u0111\u00e3 x\u1ea3y ra trong m\u00f4i tr\u01b0\u1eddng 60kPa: \u0111\u1ec9nh nhi\u1ec7t \u0111\u1ed9 c\u1ee7a c\u1ed5ng phun pin lithium-ion l\u00e0 b\u1ed1n v\u00e0 ph\u00e2n t\u00edch cho th\u1ea5y c\u00e1c ch\u1ea5t ph\u00e1o hoa \u0111\u01b0\u1ee3c ti\u00eam b\u1edfi ph\u1ea3n \u1ee9ng m\u1ea5t ki\u1ec3m so\u00e1t nhi\u1ec7t \u1edf Lok Lok c\u00f3 t\u00e1c \u0111\u1ed9ng th\u1ea5p \u0111\u1ebfn nhi\u1ec7t \u0111\u1ed9 cao. N\u1ebfu gi\u00e1 tr\u1ecb \u0111\u1ec9nh cao h\u01a1n 600 \u2103, chi\u1ec1u r\u1ed9ng s\u1ebd thu h\u1eb9p l\u1ea1i. Do \u0111\u00f3, th\u1eddi gian nhi\u1ec7t \u0111\u1ed9 cao do ph\u1ea3n \u1ee9ng m\u1ea5t ki\u1ec3m so\u00e1t nhi\u1ec7t t\u1ea1o ra trong m\u00f4i tr\u01b0\u1eddng \u00e1p su\u1ea5t th\u1ea5p 60kPa b\u1ecb r\u00fat ng\u1eafn. \u0110\u1ed3ng th\u1eddi, ph\u1ea3n \u1ee9ng gi\u1ea3i ph\u00f3ng nhi\u1ec7t \u0111\u1ed9 cao c\u1ee7a nhi\u1ec7t m\u1ea5t ki\u1ec3m so\u00e1t trong m\u00f4i tr\u01b0\u1eddng \u00e1p su\u1ea5t 60kPa an to\u00e0n h\u01a1n so v\u1edbi \u1edf \u00e1p su\u1ea5t b\u00ecnh th\u01b0\u1eddng, do \u0111\u00f3 n\u1ed3ng \u0111\u1ed9 oxy trong m\u00f4i tr\u01b0\u1eddng n\u00e0y th\u1ea5p h\u01a1n \u1edf \u00e1p su\u1ea5t b\u00ecnh th\u01b0\u1eddng. Nhi\u1ec7t gi\u1ea3i ph\u00f3ng \u1edf nhi\u1ec7t \u0111\u1ed9 cao ch\u1ee7 y\u1ebfu gi\u1ea3i ph\u00f3ng n\u0103ng l\u01b0\u1ee3ng th\u00f4ng qua ph\u1ea3n \u1ee9ng nhi\u1ec7t c\u1ee7a c\u00e1c v\u1eadt li\u1ec7u b\u00ean trong pin v\u00e0 m\u1ed9t ph\u1ea7n kh\u00e1c \u0111\u1ebfn t\u1eeb kh\u00ed d\u1ec5 ch\u00e1y do ph\u1ea3n \u1ee9ng m\u1ea5t ki\u1ec3m so\u00e1t nhi\u1ec7t t\u1ea1o ra b\u00ean trong pin.<\/span><\/span><\/p>\n

(3) M\u00f4i tr\u01b0\u1eddng \u00e1p su\u1ea5t 101kPa<\/span><\/span><\/span><\/h3>\n

Trong m\u00f4i tr\u01b0\u1eddng \u00e1p su\u1ea5t 101 kPa, t\u1ee9c l\u00e0 d\u01b0\u1edbi \u00e1p su\u1ea5t b\u00ecnh th\u01b0\u1eddng, pin s\u1ebd l\u1ea7n l\u01b0\u1ee3t tr\u1ea3i qua ph\u1ea3n \u1ee9ng m\u1ea5t ki\u1ec3m so\u00e1t nhi\u1ec7t trong m\u1ed9t s\u1ed1 \u0111i\u1ec1u ki\u1ec7n nh\u1ea5t \u0111\u1ecbnh. Pin lithium ion \u0111\u00e3 tr\u1ea3i qua b\u1ea3y ph\u1ea3n \u1ee9ng m\u1ea5t ki\u1ec3m so\u00e1t nhi\u1ec7t nghi\u00eam tr\u1ecdng trong m\u00f4i tr\u01b0\u1eddng \u0111i\u1ec7n \u00e1p th\u1ea5p. Trong ph\u1ea3n \u1ee9ng c\u1ee7a pin, \u0111\u1ec9nh ph\u1ea3n \u1ee9ng nhi\u1ec7t \u0111\u1ed9 cao s\u1ebd \u0111\u01b0\u1ee3c b\u1eaft gi\u1eef \u1edf v\u1ecb tr\u00ed cao h\u01a1n kho\u1ea3ng 30mm so v\u1edbi \u0111\u1ec9nh \u0111\u00f3 v\u00e0 \u0111\u1ec9nh nhi\u1ec7t \u0111\u1ed9 cao c\u1ee7a m\u00f4i tr\u01b0\u1eddng do ph\u1ea3n \u1ee9ng \u0111\u1ed1t ch\u00e1y tia m\u1ea1nh g\u00e2y ra s\u1ebd th\u01b0\u1eddng \u0111\u01b0\u1ee3c ph\u00e2n b\u1ed5 \u0111\u1ec1u trong ph\u1ea1m vi g\u1ea5p 1-7 l\u1ea7n ph\u1ea3n \u1ee9ng m\u1ea5t ki\u1ec3m so\u00e1t nhi\u1ec7t. T\u1ea5t c\u1ea3 c\u00e1c nhi\u1ec7t \u0111\u1ed9 \u0111\u1ec9nh nhi\u1ec7t \u0111\u1ed9 cao \u0111\u1ec1u cao h\u01a1n nhi\u1ec1u so v\u1edbi 600 \u2103, nhi\u1ec7t \u0111\u1ed9 t\u1ed1i thi\u1ec3u kho\u1ea3ng 800 \u2103 v\u00e0 nhi\u1ec7t \u0111\u1ed9 t\u1ed1i \u0111a c\u00f3 th\u1ec3 \u0111\u1ea1t t\u1edbi 1100 \u2103. \u0110\u1ed3ng th\u1eddi, chi\u1ec1u r\u1ed9ng \u0111\u1ec9nh c\u1ee7a ph\u1ea3n \u1ee9ng nhi\u1ec7t ion lithium gi\u1ea3i ph\u00f3ng nhi\u1ec7t \u0111\u1ed9 cao trong 101 kPa l\u00e0 l\u1edbn, do \u0111\u00f3 nhi\u1ec7t \u0111\u1ed9 gi\u1ea3i ph\u00f3ng k\u00e9o d\u00e0i trong m\u1ed9t th\u1eddi gian d\u00e0i. B\u1ea3y ph\u1ea3n \u1ee9ng nhi\u1ec7t kh\u00f4ng ki\u1ec3m so\u00e1t trong m\u00f4i tr\u01b0\u1eddng 101 kPa s\u1ebd gi\u1ea3i ph\u00f3ng n\u0103ng l\u01b0\u1ee3ng nhi\u1ec7t \u0111\u1ed9 cao v\u00e0 c\u00f3 t\u00e1c \u0111\u1ed9ng li\u00ean t\u1ee5c \u0111\u1ebfn nhi\u1ec7t \u0111\u1ed9 cao \u0111\u1ed1i v\u1edbi m\u00f4i tr\u01b0\u1eddng xung quanh. Ngo\u00e0i ra, c\u00e1c ngu\u1ed3n nhi\u1ec7t \u0111\u1ed9 cao gi\u1ea3i ph\u00f3ng b\u1edfi ph\u1ea3n \u1ee9ng nhi\u1ec7t tho\u00e1t ra c\u1ee7a pin lithium trong m\u00f4i tr\u01b0\u1eddng c\u00f3 \u00e1p su\u1ea5t kh\u00ed quy\u1ec3n 101kPa bao g\u1ed3m c\u00e1c y\u1ebfu t\u1ed1 sau: ph\u1ea3n \u1ee9ng nhi\u1ec7t m\u1ea1nh di\u1ec5n ra b\u00ean trong pin lithium ion \u0111\u1ec3 gi\u1ea3i ph\u00f3ng n\u0103ng l\u01b0\u1ee3ng; Kh\u00ed d\u1ec5 ch\u00e1y \u0111\u01b0\u1ee3c h\u00ecnh th\u00e0nh trong pin lithium th\u00f4ng qua ph\u1ea3n \u1ee9ng v\u00e0 ph\u1ea3n \u1ee9ng \u0111\u1ed1t ch\u00e1y th\u1ee9 c\u1ea5p \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n trong m\u00f4i tr\u01b0\u1eddng \u00e1p su\u1ea5t b\u00ecnh th\u01b0\u1eddng \u0111\u1ec3 gi\u1ea3i ph\u00f3ng nhi\u1ec7t.<\/span><\/span><\/p>\n

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Trong khi pin lithium mang l\u1ea1i s\u1ef1 ti\u1ec7n l\u1ee3i cho cu\u1ed9c s\u1ed1ng c\u1ee7a con ng\u01b0\u1eddi, th\u00ec s\u1ef1 an to\u00e0n c\u1ee7a n\u00f3 c\u0169ng \u0111\u01b0\u1ee3c m\u1ecdi ng\u01b0\u1eddi quan t\u00e2m. S\u1ef1 \u0111\u1ed1t ch\u00e1y d\u1eef d\u1ed9i c\u1ee7a ch\u1ea5t \u0111i\u1ec7n ph\u00e2n s\u1ebd xuy\u00ean qua t\u1ea5m kim lo\u1ea1i v\u00e0 gi\u1edbi h\u1ea1n n\u1ed5 c\u1ee7a kh\u00ed nhi\u1ec7t ph\u00e2n cao h\u01a1n gi\u1edbi h\u1ea1n n\u1ed5<\/p>\n","protected":false},"author":1,"featured_media":19781,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[88],"tags":[],"class_list":["post-19780","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-tin-tuc-cong-nghe"],"acf":[],"_links":{"self":[{"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/posts\/19780","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/comments?post=19780"}],"version-history":[{"count":3,"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/posts\/19780\/revisions"}],"predecessor-version":[{"id":22033,"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/posts\/19780\/revisions\/22033"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/media\/19781"}],"wp:attachment":[{"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/media?parent=19780"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/categories?post=19780"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/tags?post=19780"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}