{"id":19716,"date":"2023-03-23T09:58:22","date_gmt":"2023-03-23T09:58:22","guid":{"rendered":"http:\/\/dgbellvietnam.com\/li-ion-battery-crush-test\/"},"modified":"2024-10-24T14:54:36","modified_gmt":"2024-10-24T07:54:36","slug":"li-ion-battery-crush-test","status":"publish","type":"post","link":"https:\/\/dgbellvietnam.com\/en\/li-ion-battery-crush-test\/","title":{"rendered":"Th\u1eed nghi\u1ec7m nghi\u1ec1n pin Li-ion"},"content":{"rendered":"
\n

Do h\u1ea1n ch\u1ebf v\u1ec1 v\u1eadt li\u1ec7u, c\u00f4ng ngh\u1ec7 pin v\u00e0 quy tr\u00ecnh s\u1ea3n xu\u1ea5t, pin lithium ion lu\u00f4n c\u00f3 nguy c\u01a1 ch\u00e1y n\u1ed5 \u0111\u00e1ng k\u1ec3 trong qu\u00e1 tr\u00ecnh s\u1eed d\u1ee5ng. S\u1ef1 an to\u00e0n c\u1ee7a pin lithium ion khi va ch\u1ea1m v\u00e0 \u0111\u00e8 b\u1eb9p lu\u00f4n l\u00e0 tr\u1ecdng t\u00e2m ch\u00fa \u00fd.<\/span><\/span><\/p>\n

Nh\u00ecn chung, l\u00fd do c\u01a1 b\u1ea3n g\u00e2y ra h\u1ecfa ho\u1ea1n do t\u00e1c \u0111\u1ed9ng b\u00ean ngo\u00e0i l\u00ean pin lithium ion l\u00e0 do hi\u1ec7n t\u01b0\u1ee3ng \u0111o\u1ea3n m\u1ea1ch b\u00ean trong pin do bi\u1ebfn d\u1ea1ng v\u00e0 h\u01b0 h\u1ecfng nghi\u00eam tr\u1ecdng, d\u1eabn \u0111\u1ebfn ph\u1ea3n \u1ee9ng \u0111i\u1ec7n h\u00f3a nghi\u00eam tr\u1ecdng v\u00e0 t\u1ecfa nhi\u1ec7t cao b\u00ean trong pin, cu\u1ed1i c\u00f9ng d\u1eabn \u0111\u1ebfn hi\u1ec7n t\u01b0\u1ee3ng nhi\u1ec7t tho\u00e1t ra ngo\u00e0i v\u00e0 ch\u00e1y n\u1ed5 pin.<\/span><\/span><\/p>\n

C\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u \u0111\u00e3 thu \u0111\u01b0\u1ee3c h\u00e0nh vi h\u1ecfng h\u00f3c c\u1ee7a pin lithium ion h\u00ecnh tr\u1ee5 d\u01b0\u1edbi c\u00e1c l\u1ef1c b\u00ean ngo\u00e0i c\u01a1 h\u1ecdc kh\u00e1c nhau th\u00f4ng qua c\u00e1c th\u00ed nghi\u1ec7m v\u1ec1 t\u00ednh to\u00e0n v\u1eb9n c\u01a1 h\u1ecdc v\u00e0 m\u00f4 ph\u1ecfng s\u1ed1. M\u1ed9t s\u1ed1 nh\u00e0 nghi\u00ean c\u1ee9u \u0111\u00e3 ph\u00e1t hi\u1ec7n ra h\u00e0nh vi m\u1ea5t ki\u1ec3m so\u00e1t nhi\u1ec7t c\u1ee7a pin lithium ion 18650 d\u01b0\u1edbi nhi\u1ec1u ph\u01b0\u01a1ng ph\u00e1p nghi\u1ec1n kh\u00e1c nhau v\u00e0 ph\u00e1t hi\u1ec7n ra r\u1eb1ng ngay c\u1ea3 khi pin kh\u00f4ng b\u1ecb h\u1ecfng ho\u1eb7c v\u1ee1 khi n\u00e9n, n\u00f3 v\u1eabn c\u00f3 th\u1ec3 ph\u00e1t tri\u1ec3n th\u00e0nh m\u1ed9t tai n\u1ea1n th\u1ea3m kh\u1ed1c. Nhi\u1ec1u b\u00e1o c\u00e1o nghi\u00ean c\u1ee9u t\u1eadp trung nhi\u1ec1u h\u01a1n v\u00e0o l\u00fd thuy\u1ebft c\u01a1 b\u1ea3n v\u1ec1 qu\u00e1 tr\u00ecnh ch\u00e1y m\u1ea5t ki\u1ec3m so\u00e1t nhi\u1ec7t c\u1ee7a pin lithium ion, trong khi t\u01b0\u01a1ng \u0111\u1ed1i \u00edt nghi\u00ean c\u1ee9u \u0111\u01b0\u1ee3c ti\u1ebfn h\u00e0nh v\u1ec1 th\u1eed nghi\u1ec7m an to\u00e0n c\u1ee7a pin lithium ion trong qu\u00e1 tr\u00ecnh nghi\u1ec1n.<\/span><\/span><\/p>\n

B\u00e0i vi\u1ebft n\u00e0y c\u00f3 \u00fd \u0111\u1ecbnh ti\u1ebfn h\u00e0nh c\u00e1c th\u00ed nghi\u1ec7m \u0111\u00f9n h\u1ec7 th\u1ed1ng tr\u00ean c\u00e1c lo\u1ea1i pin lithium ion th\u00f4ng th\u01b0\u1eddng. T\u00e1c \u0111\u1ed9ng c\u1ee7a c\u00e1c \u0111i\u1ec1u ki\u1ec7n nghi\u1ec1n kh\u00e1c nhau \u0111\u1ebfn an to\u00e0n ch\u00e1y n\u1ed5 c\u1ee7a pin lithium ion \u0111\u00e3 \u0111\u01b0\u1ee3c nghi\u00ean c\u1ee9u.<\/span><\/span><\/p>\n

1.Th\u1eed nghi\u1ec7m<\/span><\/span><\/strong><\/span><\/h1>\n

Pin 18650\uff0c50% SOC\uff0cS\u1ed1 1,2,3<\/span><\/span><\/p>\n

B\u1ed1n t\u1ed1c \u0111\u1ed9 nghi\u1ec1n \u0111\u01b0\u1ee3c th\u1eed nghi\u1ec7m l\u1ea7n l\u01b0\u1ee3t l\u00e0 50 mm\/ph\u00fat, 100 mm\/ph\u00fat, 200 mm\/ph\u00fat v\u00e0 400 mm\/ph\u00fat, v\u00e0 c\u00e1c bi\u1ebfn d\u1ea1ng nghi\u1ec1n l\u1ea7n l\u01b0\u1ee3t l\u00e0 10%, 20%, 30%, 40% v\u00e0 50%. B\u00f3p pin \u1edf t\u1ed1c \u0111\u1ed9 nghi\u1ec1n kh\u00f4ng \u0111\u1ed5i \u0111\u00e3 c\u00e0i \u0111\u1eb7t. Khi bi\u1ebfn d\u1ea1ng pin \u0111\u1ea1t \u0111\u1ebfn gi\u00e1 tr\u1ecb \u0111\u00e3 c\u00e0i \u0111\u1eb7t, h\u00e3y d\u1eebng b\u00f3p v\u00e0 quan s\u00e1t pin.<\/span><\/span><\/p>\n

Trong qu\u00e1 tr\u00ecnh th\u00ed nghi\u1ec7m, c\u1eb7p nhi\u1ec7t \u0111i\u1ec7n lo\u1ea1i K c\u1ea3m bi\u1ebfn nhi\u1ec7t \u0111\u1ed9 \u0111\u01b0\u1ee3c c\u1ed1 \u0111\u1ecbnh v\u00e0o \u0111i\u1ec7n c\u1ef1c d\u01b0\u01a1ng c\u1ee7a pin lithium ion. S\u1eed d\u1ee5ng thi\u1ebft b\u1ecb thu th\u1eadp nhi\u1ec7t \u0111\u1ed9 t\u00f9y ch\u1ec9nh \u0111\u1ec3 thu th\u1eadp d\u1eef li\u1ec7u nhi\u1ec7t \u0111\u1ed9 \u0111\u01b0\u1ee3c \u0111o b\u1eb1ng c\u1eb7p nhi\u1ec7t \u0111i\u1ec7n. Ghi l\u1ea1i s\u1ef1 thay \u0111\u1ed5i nhi\u1ec7t \u0111\u1ed9 c\u1ee7a \u0111i\u1ec7n c\u1ef1c d\u01b0\u01a1ng trong qu\u00e1 tr\u00ecnh th\u00ed nghi\u1ec7m.<\/span><\/span><\/p>\n

2. K\u1ebft qu\u1ea3<\/span><\/span><\/strong><\/span><\/h1>\n

2.1 \u1ea2nh h\u01b0\u1edfng c\u1ee7a bi\u1ebfn d\u1ea1ng nghi\u1ec1n<\/span><\/span><\/strong><\/span><\/h2>\n

Khi bi\u1ebfn d\u1ea1ng \u00e9p th\u1ea5p h\u01a1n 20%, nhi\u1ec7t \u0111\u1ed9 b\u1ec1 m\u1eb7t c\u1ee7a \u0111i\u1ec7n c\u1ef1c d\u01b0\u01a1ng sau khi \u00e9p \u0111\u00f9n s\u1ed1 1 kh\u00f4ng thay \u0111\u1ed5i \u0111\u00e1ng k\u1ec3. Khi bi\u1ebfn d\u1ea1ng \u00e9p \u0111\u1ea1t 30%, nhi\u1ec7t \u0111\u1ed9 b\u1ec1 m\u1eb7t c\u1ee7a \u0111i\u1ec7n c\u1ef1c d\u01b0\u01a1ng t\u0103ng \u0111\u00e1ng k\u1ec3 v\u00e0 nhi\u1ec7t \u0111\u1ed9 t\u0103ng nhanh h\u01a1n. Nhi\u1ec7t \u0111\u1ed9 \u0111\u1ea1t gi\u00e1 tr\u1ecb c\u1ef1c \u0111\u1ea1i trong v\u00f2ng 90 gi\u00e2y v\u00e0 sau \u0111\u00f3 gi\u1ea3m ch\u1eadm.<\/span><\/span><\/p>\n

S\u1ef1 thay \u0111\u1ed5i nhi\u1ec7t \u0111\u1ed9 tr\u00ean b\u1ec1 m\u1eb7t \u0111i\u1ec7n c\u1ef1c d\u01b0\u01a1ng c\u1ee7a s\u1ed1 2 t\u01b0\u01a1ng t\u1ef1 nh\u01b0 s\u1ed1 1. Khi bi\u1ebfn d\u1ea1ng \u00e9p th\u1ea5p h\u01a1n 20%, s\u1ef1 thay \u0111\u1ed5i nhi\u1ec7t \u0111\u1ed9 tr\u00ean b\u1ec1 m\u1eb7t \u0111i\u1ec7n c\u1ef1c d\u01b0\u01a1ng kh\u00f4ng \u0111\u00e1ng k\u1ec3. Khi bi\u1ebfn d\u1ea1ng \u0111\u00f9n l\u00e0 30%, nhi\u1ec7t \u0111\u1ed9 c\u1ee7a \u0111i\u1ec7n c\u1ef1c d\u01b0\u01a1ng t\u0103ng l\u00ean, v\u1edbi nhi\u1ec7t \u0111\u1ed9 t\u1ed1i \u0111a kho\u1ea3ng 37 \u2103. Nhi\u1ec7t \u0111\u1ed9 gi\u1ea3m ch\u1eadm sau m\u1ed9t th\u1eddi gian t\u1ecfa nhi\u1ec7t d\u00e0i. Khi bi\u1ebfn d\u1ea1ng \u0111\u00f9n l\u00e0 40%, nhi\u1ec7t \u0111\u1ed9 c\u1ee7a \u0111i\u1ec7n c\u1ef1c d\u01b0\u01a1ng c\u1ee7a pin t\u0103ng nhanh v\u00e0 nhi\u1ec7t \u0111\u1ed9 t\u1ed1i \u0111a t\u0103ng l\u00ean kho\u1ea3ng 57 \u2103 v\u00e0 m\u1ed9t l\u01b0\u1ee3ng l\u1edbn ch\u1ea5t \u0111i\u1ec7n ph\u00e2n ch\u1ea3y ra kh\u1ecfi \u0111i\u1ec7n c\u1ef1c d\u01b0\u01a1ng. Khi bi\u1ebfn d\u1ea1ng bi\u1ebfn d\u1ea1ng \u0111\u01b0\u1ee3c \u0111\u1eb7t th\u00e0nh 50% \u0111\u1ec3 \u0111\u00f9n, xu h\u01b0\u1edbng thay \u0111\u1ed5i nhi\u1ec7t \u0111\u1ed9 c\u1ee7a \u0111i\u1ec7n c\u1ef1c d\u01b0\u01a1ng c\u1ee7a pin t\u01b0\u01a1ng t\u1ef1 nh\u01b0 khi bi\u1ebfn d\u1ea1ng l\u00e0 40%. Nhi\u1ec7t \u0111\u1ed9 t\u1ed1i \u0111a t\u0103ng l\u00ean kho\u1ea3ng 63 \u2103 trong khi m\u1ed9t l\u01b0\u1ee3ng l\u1edbn ch\u1ea5t \u0111i\u1ec7n ph\u00e2n ch\u1ea3y ra.<\/span><\/span><\/p>\n

S\u1ef1 thay \u0111\u1ed5i nhi\u1ec7t \u0111\u1ed9 tr\u00ean b\u1ec1 m\u1eb7t \u0111i\u1ec7n c\u1ef1c d\u01b0\u01a1ng c\u1ee7a s\u1ed1 3 kh\u00e1c bi\u1ec7t \u0111\u00e1ng k\u1ec3 so v\u1edbi s\u1ed1 1 v\u00e0 s\u1ed1 2. Khi bi\u1ebfn d\u1ea1ng nghi\u1ec1n th\u1ea5p h\u01a1n 10%, nhi\u1ec7t \u0111\u1ed9 b\u1ec1 m\u1eb7t \u0111i\u1ec7n c\u1ef1c d\u01b0\u01a1ng kh\u00f4ng thay \u0111\u1ed5i \u0111\u00e1ng k\u1ec3. Khi bi\u1ebfn d\u1ea1ng nghi\u1ec1n l\u00e0 20%, nhi\u1ec7t \u0111\u1ed9 c\u1ee7a \u0111i\u1ec7n c\u1ef1c d\u01b0\u01a1ng t\u0103ng \u0111\u00e1ng k\u1ec3 v\u00e0 nhi\u1ec7t \u0111\u1ed9 t\u1ed1i \u0111a \u0111\u1ea1t kho\u1ea3ng 47 \u2103, v\u1edbi m\u1ed9t l\u01b0\u1ee3ng nh\u1ecf ch\u1ea5t \u0111i\u1ec7n ph\u00e2n ch\u1ea3y ra. Khi bi\u1ebfn d\u1ea1ng nghi\u1ec1n l\u00e0 30% v\u00e0 40%, nhi\u1ec7t \u0111\u1ed9 \u0111i\u1ec7n c\u1ef1c d\u01b0\u01a1ng t\u0103ng nh\u1eb9 r\u1ed3i gi\u1ea3m ch\u1eadm. Sau khi n\u1edbi l\u1ecfng \u0111\u1ea7u nghi\u1ec1n, nhi\u1ec7t \u0111\u1ed9 l\u1ea1i t\u0103ng. Khi bi\u1ebfn d\u1ea1ng nghi\u1ec1n l\u00e0 50%, pin s\u1ebd b\u1ecb v\u1ee1 sau khi b\u1ecb \u00e9p v\u00e0 nhi\u1ec7t \u0111\u1ed9 c\u1ee7a \u0111i\u1ec7n c\u1ef1c d\u01b0\u01a1ng s\u1ebd nhanh ch\u00f3ng t\u0103ng l\u00ean kho\u1ea3ng 95 \u2103. Sau \u0111\u00f3, nhi\u1ec7t \u0111\u1ed9 c\u1ee7a \u0111\u1ea7u nghi\u1ec1n \u0111\u01b0\u1ee3c gi\u1ea3i ph\u00f3ng s\u1ebd t\u0103ng tr\u1edf l\u1ea1i.<\/span><\/span><\/p>\n

Pin \u0111i\u1ec7n c\u1ef1c d\u01b0\u01a1ng lithium coban oxit kh\u00f4ng bi\u1ec3u hi\u1ec7n b\u1ea5t th\u01b0\u1eddng v\u1ec1 nhi\u1ec7t \u0111\u1ed9 \u0111\u00e1ng k\u1ec3 khi bi\u1ebfn d\u1ea1ng nghi\u1ec1n n\u1eb1m trong ph\u1ea1m vi 20% v\u00e0 ch\u1ec9 khi bi\u1ebfn d\u1ea1ng nghi\u1ec1n kh\u00f4 30% th\u00ec ch\u00fang m\u1edbi d\u1ec5 d\u00e0ng sinh ra nhi\u1ec7t v\u00e0 nhi\u1ec7t, t\u1ea1o ra nguy c\u01a1 ch\u00e1y n\u1ed5 nh\u1ea5t \u0111\u1ecbnh. Nhi\u1ec7t \u0111\u1ed9 \u0111i\u1ec7n c\u1ef1c d\u01b0\u01a1ng c\u1ee7a pin \u0111i\u1ec7n c\u1ef1c d\u01b0\u01a1ng v\u1eadt li\u1ec7u ba th\u00e0nh ph\u1ea7n t\u0103ng \u0111\u00e1ng k\u1ec3 khi bi\u1ebfn d\u1ea1ng nh\u1ea1y c\u1ea3m c\u1ee7a pin l\u00e0 20% v\u00e0 nhi\u1ec7t \u0111\u1ed9 \u0111i\u1ec7n c\u1ef1c d\u01b0\u01a1ng t\u1ed1i \u0111a trong th\u00ed nghi\u1ec7m nghi\u1ec1n c\u00f3 th\u1ec3 t\u0103ng l\u00ean kho\u1ea3ng 95 \u2103, cao h\u01a1n 66 \u2103 c\u1ee7a pin \u0111i\u1ec7n c\u1ef1c d\u01b0\u01a1ng lithium coban oxit, cho th\u1ea5y pin \u0111i\u1ec7n c\u1ef1c d\u01b0\u01a1ng v\u1eadt li\u1ec7u ba th\u00e0nh ph\u1ea7n c\u00f3 nguy c\u01a1 ch\u00e1y n\u1ed5 l\u1edbn h\u01a1n khi ch\u1ecbu t\u00e1c \u0111\u1ed9ng c\u1ee7a l\u1ef1c nghi\u1ec1n b\u00ean ngo\u00e0i. K\u1ebft qu\u1ea3 nghi\u1ec1n d\u01b0\u1edbi c\u00e1c bi\u1ebfn d\u1ea1ng kh\u00e1c nhau cho th\u1ea5y bi\u1ebfn d\u1ea1ng th\u1ef1c nghi\u1ec7m nghi\u1ec1n \u0111\u1ec3 \u0111\u00e1nh gi\u00e1 m\u1ee9c \u0111\u1ed9 an to\u00e0n ch\u00e1y n\u1ed5 c\u1ee7a pin lithium ion n\u00ean \u0111\u01b0\u1ee3c \u0111\u1eb7t th\u00e0nh \u2265 30%.<\/span><\/span><\/p>\n

2.2 T\u00e1c \u0111\u1ed9ng c\u1ee7a t\u1ed1c \u0111\u1ed9 nghi\u1ec1n<\/span><\/span><\/strong><\/span><\/h2>\n

\u0110\u1eb7t bi\u1ebfn h\u00ecnh d\u1ea1ng th\u00e0nh 30%. Nhi\u1ec7t \u0111\u1ed9 b\u1ec1 m\u1eb7t \u0111i\u1ec7n c\u1ef1c d\u01b0\u01a1ng c\u1ee7a m\u1ed7i pin thay \u0111\u1ed5i theo th\u1eddi gian \u1edf c\u00e1c t\u1ed1c \u0111\u1ed9 nghi\u1ec1n kh\u00e1c nhau.<\/span><\/span><\/p>\n

Nhi\u1ec7t \u0111\u1ed9 b\u1ec1 m\u1eb7t c\u1ee7a \u0111i\u1ec7n c\u1ef1c d\u01b0\u01a1ng s\u1ed1 1 t\u0103ng nhanh sau khi b\u1ecb nghi\u1ec1n n\u00e1t. Trong qu\u00e1 tr\u00ecnh th\u00ed nghi\u1ec7m, ng\u01b0\u1eddi ta quan s\u00e1t th\u1ea5y m\u1ed9t l\u01b0\u1ee3ng l\u1edbn ch\u1ea5t \u0111i\u1ec7n ph\u00e2n ch\u1ea3y ra. Khi t\u1ed1c \u0111\u1ed9 nghi\u1ec1n l\u00e0 100 mm\/ph\u00fat, 200 mm\/ph\u00fat v\u00e0 400 mm\/ph\u00fat, nhi\u1ec7t \u0111\u1ed9 t\u1ed1i \u0111a l\u1ea7n l\u01b0\u1ee3t l\u00e0 kho\u1ea3ng 68 \u2103, 81 \u2103 v\u00e0 71 \u2103. T\u1ed1c \u0111\u1ed9 nghi\u1ec1n \u00edt \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn s\u1ef1 gia t\u0103ng nhi\u1ec7t \u0111\u1ed9 c\u1ee7a 1. C\u00e1c t\u1ed1c \u0111\u1ed9 nghi\u1ec1n kh\u00e1c nhau c\u00f3 c\u00f9ng t\u1ed1c \u0111\u1ed9 bi\u1ebfn d\u1ea1ng v\u00e0 s\u1ef1 gia t\u0103ng nhi\u1ec7t \u0111\u1ed9 c\u1ee7a \u0111i\u1ec7n c\u1ef1c d\u01b0\u01a1ng v\u1ec1 c\u01a1 b\u1ea3n l\u00e0 gi\u1ed1ng nhau.<\/span><\/span><\/p>\n

Dung l\u01b0\u1ee3ng pin t\u0103ng t\u1eeb 2,2 Ah \u1edf s\u1ed1 1 l\u00ean 2,6 Ah \u1edf s\u1ed1 2, khi\u1ebfn pin nh\u1ea1y c\u1ea3m h\u01a1n v\u1edbi t\u1ed1c \u0111\u1ed9 nghi\u1ec1n. Nhi\u1ec7t \u0111\u1ed9 t\u0103ng l\u00ean c\u1ee7a b\u1ec1 m\u1eb7t \u0111i\u1ec7n c\u1ef1c d\u01b0\u01a1ng ti\u1ebfp t\u1ee5c t\u0103ng theo t\u1ed1c \u0111\u1ed9 nghi\u1ec1n. Khi t\u1ed1c \u0111\u1ed9 nghi\u1ec1n t\u0103ng t\u1eeb 100 mm\/ph\u00fat l\u00ean 400 mm\/ph\u00fat, nhi\u1ec7t \u0111\u1ed9 t\u1ed1i \u0111a c\u1ee7a b\u1ec1 m\u1eb7t \u0111i\u1ec7n c\u1ef1c d\u01b0\u01a1ng t\u0103ng t\u1eeb kho\u1ea3ng 65 \u2103 l\u00ean kho\u1ea3ng 95 \u2103, k\u00e8m theo l\u01b0\u1ee3ng l\u1edbn ch\u1ea5t \u0111i\u1ec7n ph\u00e2n ch\u1ea3y ra.<\/span><\/span><\/p>\n

S\u1ef1 thay \u0111\u1ed5i nhi\u1ec7t \u0111\u1ed9 c\u1ee7a b\u1ec1 m\u1eb7t \u0111i\u1ec7n c\u1ef1c d\u01b0\u01a1ng s\u1ed1 3 t\u01b0\u01a1ng t\u1ef1 nh\u01b0 s\u1ed1 2. T\u1ed1c \u0111\u1ed9 nghi\u1ec1n c\u00e0ng l\u1edbn th\u00ec nhi\u1ec7t \u0111\u1ed9 t\u0103ng c\u00e0ng cao. Khi t\u1ed1c \u0111\u1ed9 nghi\u1ec1n l\u00e0 50 mm\/ph\u00fat<\/span><\/span><\/p>\n

\u1ede t\u1ed1c \u0111\u1ed9 100 mm\/ph\u00fat v\u00e0 400 mm\/ph\u00fat, nhi\u1ec7t \u0111\u1ed9 t\u1ed1i \u0111a l\u1ea7n l\u01b0\u1ee3t l\u00e0 kho\u1ea3ng 65\u2103, 78\u2103 v\u00e0 106\u2103, cao h\u01a1n nhi\u1ec7t \u0111\u1ed9 t\u1ed1i \u0111a c\u1ee7a s\u1ed1 2 trong c\u00f9ng \u0111i\u1ec1u ki\u1ec7n th\u1ef1c nghi\u1ec7m. \u1ede t\u1ed1c \u0111\u1ed9 \u00e9p 200 mm\/ph\u00fat, s\u1ed1 3 ph\u00e1t n\u1ed5, t\u1ea1o ra m\u1ed9t l\u01b0\u1ee3ng l\u1edbn kh\u00f3i tr\u1eafng b\u00ean trong m\u00e0ng v\u00e0 ch\u1ea5t \u0111i\u1ec7n ph\u00e2n phun ra t\u1eeb \u0111i\u1ec7n c\u1ef1c d\u01b0\u01a1ng.<\/span><\/span><\/p>\n

K\u1ebft qu\u1ea3 th\u1eed nghi\u1ec7m v\u1ec1 c\u00e1c t\u1ed1c \u0111\u1ed9 nghi\u1ec1n kh\u00e1c nhau cho th\u1ea5y t\u1ed1c \u0111\u1ed9 nghi\u1ec1n c\u00e0ng cao th\u00ec nhi\u1ec7t \u0111\u1ed9 t\u0103ng c\u1ee7a pin lithium ion c\u00e0ng cao, nguy c\u01a1 ch\u00e1y n\u1ed5 c\u00e0ng l\u1edbn. Trong ba lo\u1ea1i pin lithium ion, pin \u0111i\u1ec7n c\u1ef1c d\u01b0\u01a1ng v\u1eadt li\u1ec7u ba th\u00e0nh ph\u1ea7n th\u1ec3 hi\u1ec7n m\u1ee9c t\u0103ng nhi\u1ec7t \u0111\u1ed9 l\u1edbn nh\u1ea5t khi <\/span><\/span>t\u1ed1c \u0111\u1ed9 nghi\u1ec1n t\u0103ng v\u00e0 nhi\u1ec7t \u0111\u1ed9 t\u1ed1i \u0111a c\u00f3 th\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c l\u00e0 cao nh\u1ea5t, cho th\u1ea5y r\u1ee7i ro l\u1edbn nh\u1ea5t. T\u1eeb so s\u00e1nh th\u1eed nghi\u1ec7m v\u1ec1 c\u00e1c t\u1ed1c \u0111\u1ed9 nghi\u1ec1n kh\u00e1c nhau, c\u00f3 th\u1ec3 th\u1ea5y t\u1ed1c \u0111\u1ed9 nghi\u1ec1n ph\u1ea3i \u2265 200mm\/ph\u00fat trong qu\u00e1 tr\u00ecnh \u0111\u00e1nh gi\u00e1 an to\u00e0n ch\u00e1y n\u1ed5 c\u1ee7a pin lithium ion, \u0111\u1ec3 quan s\u00e1t t\u1ed1t h\u01a1n s\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa c\u00e1c lo\u1ea1i pin lithium ion kh\u00e1c nhau. \u0110\u1ed3ng th\u1eddi, s\u1ef1 thay \u0111\u1ed5i nhi\u1ec7t \u0111\u1ed9 tr\u00ean b\u1ec1 m\u1eb7t pin lithium ion c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng l\u00e0m c\u01a1 s\u1edf quan tr\u1ecdng \u0111\u1ec3 \u0111\u00e1nh gi\u00e1 an to\u00e0n ch\u00e1y n\u1ed5, \u0111\u1eb7c bi\u1ec7t n\u1ebfu nhi\u1ec7t \u0111\u1ed9 b\u1ec1 m\u1eb7t c\u00f3 th\u1ec3 t\u0103ng l\u00ean tr\u00ean 100 trong qu\u00e1 tr\u00ecnh \u0111\u00f9n, th\u00ec nguy c\u01a1 ch\u00e1y n\u1ed5 \u0111\u1ed1i v\u1edbi pin lithium ion s\u1ebd cao h\u01a1n.<\/span><\/span><\/span><\/p>\n

3.K\u1ebft lu\u1eadn<\/span><\/span><\/strong><\/span><\/h1>\n

Pin lithium ion d\u1ec5 b\u1ecb \u0111o\u1ea3n m\u1ea1ch b\u00ean trong, c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn \u0111\u00e1nh l\u1eeda, ch\u00e1y v\u00e0 th\u1eadm ch\u00ed n\u1ed5 d\u01b0\u1edbi \u00e1p su\u1ea5t b\u00ean ngo\u00e0i. \u0110\u1ec3 nghi\u00ean c\u1ee9u nguy c\u01a1 ch\u00e1y c\u1ee7a pin lithium ion trong \u0111i\u1ec1u ki\u1ec7n nghi\u1ec1n, ba lo\u1ea1i pin lithium ion \u0111\u00e3 \u0111\u01b0\u1ee3c ch\u1ecdn \u0111\u1ec3 th\u1ef1c hi\u1ec7n c\u00e1c th\u00ed nghi\u1ec7m \u0111\u00e1nh l\u1eeda nghi\u1ec1n d\u01b0\u1edbi c\u00e1c bi\u1ebfn d\u1ea1ng nghi\u1ec1n kh\u00e1c nhau v\u00e0 t\u1ed1c \u0111\u1ed9 nghi\u1ec1n kh\u00e1c nhau. C\u00e1c k\u1ebft lu\u1eadn sau \u0111\u00e2y \u0111\u00e3 \u0111\u01b0\u1ee3c r\u00fat ra: Khi bi\u1ebfn d\u1ea1ng nghi\u1ec1n c\u1ee7a pin \u0111i\u1ec7n c\u1ef1c d\u01b0\u01a1ng oxit lithium coban n\u1eb1m trong ph\u1ea1m vi 20%, kh\u00f4ng c\u00f3 nguy c\u01a1 b\u1ea5t th\u01b0\u1eddng \u0111\u00e1ng k\u1ec3 v\u1ec1 nhi\u1ec7t \u0111\u1ed9 pin; Ch\u1ec9 khi bi\u1ebfn d\u1ea1ng nghi\u1ec1n \u0111\u1ea1t 30% th\u00ec m\u1edbi d\u1ec5 sinh ra nhi\u1ec7t v\u00e0 nhi\u1ec7t, d\u1eabn \u0111\u1ebfn m\u1ed9t s\u1ed1 nguy c\u01a1 ch\u00e1y n\u1ed5.<\/span><\/span><\/p>\n

Khi bi\u1ebfn thi\u00ean h\u00ecnh d\u1ea1ng c\u1ee7a pin \u0111i\u1ec7n c\u1ef1c d\u01b0\u01a1ng v\u1eadt li\u1ec7u ba th\u00e0nh ph\u1ea7n l\u00e0 20%, c\u00f3 s\u1ef1 gia t\u0103ng nhi\u1ec7t \u0111\u1ed9 \u0111\u00e1ng k\u1ec3 \u0111\u1ea1t \u0111\u1ebfn nhi\u1ec7t \u0111\u1ed9 t\u1ed1i \u0111a cao h\u01a1n \u0111\u00e1ng k\u1ec3 so v\u1edbi pin \u0111i\u1ec7n c\u1ef1c d\u01b0\u01a1ng oxit lithium coban. Khi ch\u1ecbu t\u00e1c \u0111\u1ed9ng n\u00e9n b\u00ean ngo\u00e0i, c\u00f3 nguy c\u01a1 ch\u00e1y n\u1ed5 ti\u1ec1m \u1ea9n l\u1edbn h\u01a1n. Khi t\u1ed1c \u0111\u1ed9 nghi\u1ec1n t\u0103ng l\u00ean, nhi\u1ec7t \u0111\u1ed9 t\u0103ng c\u1ee7a pin lithium ion c\u0169ng t\u0103ng l\u00ean v\u00e0 nguy c\u01a1 ch\u00e1y n\u1ed5 c\u0169ng t\u0103ng theo.<\/span><\/span><\/p>\n

So v\u1edbi pin \u0111i\u1ec7n c\u1ef1c d\u01b0\u01a1ng lithium coban oxit, pin \u0111i\u1ec7n c\u1ef1c d\u01b0\u01a1ng v\u1eadt li\u1ec7u ba th\u00e0nh ph\u1ea7n \u0111\u1ea1t nhi\u1ec7t \u0111\u1ed9 cao h\u01a1n v\u1edbi m\u1ee9c t\u0103ng nhi\u1ec7t \u0111\u1ed9 l\u1edbn h\u01a1n khi t\u1ed1c \u0111\u1ed9 nghi\u1ec1n t\u0103ng v\u00e0 d\u1ec5 x\u1ea3y ra ch\u00e1y n\u1ed5 h\u01a1n.<\/span><\/span><\/p>\n

Khi \u0111\u00e1nh gi\u00e1 t\u00ednh an to\u00e0n ch\u00e1y n\u1ed5 c\u1ee7a pin lithium ion th\u00f4ng qua c\u00e1c th\u00ed nghi\u1ec7m nghi\u1ec1n, bi\u1ebfn h\u00ecnh d\u1ea1ng ph\u1ea3i \u0111\u01b0\u1ee3c \u0111\u1eb7t th\u00e0nh 30% v\u00e0 t\u1ed1c \u0111\u1ed9 nghi\u1ec1n ph\u1ea3i \u0111\u01b0\u1ee3c \u0111\u1eb7t th\u00e0nh 200 mm\/ph\u00fat. \u0110\u1ed3ng th\u1eddi, s\u1ef1 thay \u0111\u1ed5i nhi\u1ec7t \u0111\u1ed9 tr\u00ean b\u1ec1 m\u1eb7t pin lithium ion c\u00f3 th\u1ec3 l\u00e0 c\u01a1 s\u1edf quan tr\u1ecdng \u0111\u1ec3 \u0111\u00e1nh gi\u00e1 t\u00ednh an to\u00e0n ch\u00e1y n\u1ed5.<\/span><\/span><\/p>\n

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Do h\u1ea1n ch\u1ebf v\u1ec1 v\u1eadt li\u1ec7u, c\u00f4ng ngh\u1ec7 pin v\u00e0 quy tr\u00ecnh s\u1ea3n xu\u1ea5t, pin lithium ion lu\u00f4n c\u00f3 nguy c\u01a1 ch\u00e1y n\u1ed5 \u0111\u00e1ng k\u1ec3 trong qu\u00e1 tr\u00ecnh s\u1eed d\u1ee5ng. S\u1ef1 an to\u00e0n c\u1ee7a pin lithium ion khi va ch\u1ea1m v\u00e0 \u0111\u00e8 b\u1eb9p lu\u00f4n l\u00e0 tr\u1ecdng t\u00e2m ch\u00fa \u00fd. Nh\u00ecn chung, l\u00fd do c\u01a1 b\u1ea3n<\/p>\n","protected":false},"author":1,"featured_media":19717,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[88],"tags":[],"class_list":["post-19716","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\/19716","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=19716"}],"version-history":[{"count":2,"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/posts\/19716\/revisions"}],"predecessor-version":[{"id":22003,"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/posts\/19716\/revisions\/22003"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/media\/19717"}],"wp:attachment":[{"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/media?parent=19716"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/categories?post=19716"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/tags?post=19716"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}