{"id":19714,"date":"2023-03-31T01:15:11","date_gmt":"2023-03-31T01:15:11","guid":{"rendered":"http:\/\/dgbellvietnam.com\/about-cylinderical-li-ion-battery-safety-test\/"},"modified":"2024-11-15T14:54:10","modified_gmt":"2024-11-15T07:54:10","slug":"about-cylinderical-li-ion-battery-safety-test","status":"publish","type":"post","link":"https:\/\/dgbellvietnam.com\/en\/about-cylinderical-li-ion-battery-safety-test\/","title":{"rendered":"Gi\u1edbi thi\u1ec7u th\u1eed nghi\u1ec7m an to\u00e0n pin Li-on h\u00ecnh tr\u1ee5"},"content":{"rendered":"
\n

T\u00ednh an to\u00e0n c\u1ee7a pin lithium ion \u0111\u1ec1 c\u1eadp \u0111\u1ebfn kh\u1ea3 n\u0103ng ng\u0103n ch\u1eb7n c\u00e1c nhi\u1ec5u lo\u1ea1n b\u00ean ngo\u00e0i ban \u0111\u1ea7u v\u00e0 g\u00e2y ra h\u00e0nh vi kh\u00f4ng an to\u00e0n trong qu\u00e1 tr\u00ecnh s\u1eed d\u1ee5ng b\u00ecnh th\u01b0\u1eddng ho\u1eb7c l\u1ea1m d\u1ee5ng. Pin lithium ion h\u00ecnh tr\u1ee5 c\u00f3 n\u0103ng l\u01b0\u1ee3ng ri\u00eang cao h\u01a1n v\u00e0 v\u1ecf pin \u0111\u01b0\u1ee3c l\u00e0m b\u1eb1ng th\u00e9p. Khi pin b\u1ecb m\u1ea5t nhi\u1ec7t b\u1ea5t th\u01b0\u1eddng, nhi\u1ec7t b\u00ean trong pin t\u00edch t\u1ee5, t\u1ea1o ra \u00e1p su\u1ea5t cao h\u01a1n v\u00e0 c\u00f3 th\u1ec3 ph\u00e1t n\u1ed5, g\u00e2y h\u1ea1i cho th\u1ebf gi\u1edbi b\u00ean ngo\u00e0i v\u00e0 ng\u01b0\u1eddi d\u00f9ng. Do s\u1ef1 kh\u00e1c bi\u1ec7t trong b\u1ea3ng \u0111i\u1ec1u khi\u1ec3n v\u00e0 s\u1ef1 hi\u1ec3u bi\u1ebft c\u1ee7a kh\u00e1ch h\u00e0ng v\u1ec1 pin, vi\u1ec7c l\u1ea1m d\u1ee5ng pin l\u00e0 kh\u00f4ng th\u1ec3 tr\u00e1nh kh\u1ecfi trong qu\u00e1 tr\u00ecnh s\u1eed d\u1ee5ng th\u1ef1c t\u1ebf. Do \u0111\u00f3, \u0111\u1eb7c bi\u1ec7t \u0111\u1ed1i v\u1edbi pin lithium-ion h\u00ecnh tr\u1ee5, t\u00ednh an to\u00e0n c\u1ee7a pin kh\u00f4ng ch\u1ec9 l\u00e0 ng\u0103n ng\u1eeba kh\u00f3i, ch\u00e1y, r\u00f2 r\u1ec9 ch\u1ea5t l\u1ecfng v\u00e0 n\u1ed5 theo c\u00e1c th\u1eed nghi\u1ec7m ti\u00eau chu\u1ea9n kh\u00e1c nhau m\u00e0 c\u00f2n tr\u00e1nh th\u01b0\u01a1ng t\u00edch c\u00e1 nh\u00e2n do c\u00e1c v\u1ea5n \u0111\u1ec1 tr\u00ean g\u00e2y ra trong tr\u01b0\u1eddng h\u1ee3p kh\u00e1ch h\u00e0ng l\u1ea1m d\u1ee5ng.<\/span><\/span><\/p>\n

\u01afu \u0111i\u1ec3m s\u1ea3n xu\u1ea5t v\u00e0 k\u1ef9 thu\u1eadt ch\u1ee7 y\u1ebfu c\u1ee7a pin lithium ion h\u00ecnh tr\u1ee5 v\u1eabn do c\u00e1c doanh nghi\u1ec7p Nh\u1eadt B\u1ea3n v\u00e0 H\u00e0n Qu\u1ed1c ki\u1ec3m so\u00e1t. C\u00e1c doanh nghi\u1ec7p trong n\u01b0\u1edbc s\u1ea3n xu\u1ea5t pin lithium ion h\u00ecnh tr\u1ee5 c\u0169ng c\u00f3 quy m\u00f4 nh\u1ea5t \u0111\u1ecbnh, nh\u01b0ng v\u1ec1 hi\u1ec7u su\u1ea5t s\u1ea3n ph\u1ea9m, ngo\u00e0i \u0111\u1ed9 tr\u1ec5 nh\u1ea5t \u0111\u1ecbnh v\u1ec1 c\u00f4ng su\u1ea5t, nh\u01b0\u1ee3c \u0111i\u1ec3m l\u1edbn nh\u1ea5t n\u1eb1m \u1edf hi\u1ec7u su\u1ea5t an to\u00e0n c\u1ee7a pin. S\u1ef1 c\u1ea1nh tranh gi\u1eefa c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t pin lithium ion h\u00ecnh tr\u1ee5 trong n\u01b0\u1edbc, c\u0169ng nh\u01b0 gi\u1eefa c\u00e1c doanh nghi\u1ec7p trong v\u00e0 ngo\u00e0i n\u01b0\u1edbc, \u0111ang d\u1ea7n \u0111\u1ea9y ng\u00e0nh c\u00f4ng nghi\u1ec7p pin lithium ion h\u00ecnh tr\u1ee5 v\u00e0o k\u1ef7 nguy\u00ean s\u1ea3n xu\u1ea5t tinh ch\u1ebf.<\/span><\/span><\/p>\n

1. \u0110\u00e1nh gi\u00e1 an to\u00e0n c\u1ee7a pin lithium h\u00ecnh tr\u1ee5<\/span><\/span><\/strong><\/span><\/h1>\n

Ti\u00eau chu\u1ea9n an to\u00e0n pin hi\u1ec7n t\u1ea1i ch\u1ee7 y\u1ebfu bao g\u1ed3m ti\u00eau chu\u1ea9n th\u1eed nghi\u1ec7m <\/span><\/span>UL1642<\/span><\/span><\/a> c\u1ee7a Hoa K\u1ef3 , <\/span><\/span>ti\u00eau chu\u1ea9n th\u1eed nghi\u1ec7m IEC<\/span><\/span><\/a> c\u1ee7a \u1ee6y ban K\u1ef9 thu\u1eadt \u0110i\u1ec7n Qu\u1ed1c t\u1ebf , JIS c\u1ee7a Nh\u1eadt B\u1ea3n, GB c\u1ee7a Trung Qu\u1ed1c v\u00e0 c\u00e1c ti\u00eau chu\u1ea9n chung kh\u00e1c. \u0110\u1ed1i v\u1edbi pin lithium-ion h\u00ecnh tr\u1ee5, do l\u1ee3i th\u1ebf k\u1ef9 thu\u1eadt c\u1ee7a ch\u00fang trong c\u00e1c doanh nghi\u1ec7p Nh\u1eadt B\u1ea3n v\u00e0 l\u1ee3i th\u1ebf th\u1ecb tr\u01b0\u1eddng \u1edf Ch\u00e2u \u00c2u v\u00e0 Hoa K\u1ef3, ch\u1ee7 y\u1ebfu c\u00f3 hai ti\u00eau chu\u1ea9n \u0111\u01b0\u1ee3c \u01b0a chu\u1ed9ng trong ng\u00e0nh: JIS v\u00e0 UL. B\u1ea5t k\u1ec3 ti\u00eau chu\u1ea9n n\u00e0o, pin \u0111\u1ec1u ph\u1ea3i:<\/span><\/span><\/p>\n

1) kh\u00f4ng c\u00f3 hi\u1ec7n t\u01b0\u1ee3ng b\u1ea5t th\u01b0\u1eddng nh\u01b0 kh\u00f3i, ch\u00e1y ho\u1eb7c r\u00f2 r\u1ec9 ch\u1ea5t l\u1ecfng trong qu\u00e1 tr\u00ecnh s\u1eed d\u1ee5ng b\u00ecnh th\u01b0\u1eddng c\u1ee7a kh\u00e1ch h\u00e0ng;<\/span><\/span><\/p>\n

2) Trong tr\u01b0\u1eddng h\u1ee3p kh\u00e1ch h\u00e0ng <\/span><\/span>l\u1ea1m d\u1ee5ng<\/span><\/span><\/a> , c\u0169ng kh\u00f4ng \u0111\u01b0\u1ee3c c\u00f3 b\u1ea5t th\u01b0\u1eddng nh\u01b0 kh\u00f3i, ch\u00e1y, r\u00f2 r\u1ec9 ch\u1ea5t l\u1ecfng, v.v.;<\/span><\/span><\/p>\n

3) Y\u00eau c\u1ea7u \u0111\u1eb7c bi\u1ec7t \u0111\u1ed1i v\u1edbi pin h\u00ecnh tr\u1ee5. Do pin lithium h\u00ecnh tr\u1ee5 th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng v\u1edbi s\u1ed1 l\u01b0\u1ee3ng l\u1edbn pin \u0111\u01a1n, \u0111\u00f2i h\u1ecfi \u0111\u1ed9 \u0111\u1ed3ng nh\u1ea5t c\u1ee7a pin cao h\u01a1n, m\u1ed9t s\u1ed1 kh\u00e1ch h\u00e0ng c\u0169ng \u0111\u1ec1 xu\u1ea5t c\u00e1c th\u1eed nghi\u1ec7m hi\u1ec7u su\u1ea5t \u0111\u1eb7c bi\u1ec7t nh\u01b0 \u0111\u1ea7u t\u01b0 d\u01b0\u1edbi bi\u1ec3n s\u00e2u. Do s\u1eed d\u1ee5ng v\u1ecf th\u00e9p l\u00e0m v\u1ecf ngo\u00e0i c\u1ee7a pin lithium h\u00ecnh tr\u1ee5, n\u1ebfu x\u1ea3y ra n\u1ed5, c\u00f3 th\u1ec3 g\u00e2y h\u1ea1i \u0111\u00e1ng k\u1ec3 cho c\u01a1 th\u1ec3 con ng\u01b0\u1eddi. Do \u0111\u00f3, y\u00eau c\u1ea7u an to\u00e0n \u0111\u1ed1i v\u1edbi pin lithium h\u00ecnh tr\u1ee5 s\u1ebd cao h\u01a1n. Ngay c\u1ea3 khi pin b\u1eaft l\u1eeda trong nh\u1eefng t\u00ecnh hu\u1ed1ng c\u1ef1c \u0111oan nh\u01b0 h\u1ecfa ho\u1ea1n, kh\u00f4ng c\u00f3 ch\u1ea5t r\u1eafn n\u00e0o c\u00f3 th\u1ec3 bay ra ngo\u00e0i, \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o an to\u00e0n c\u00e1 nh\u00e2n cho ng\u01b0\u1eddi s\u1eed d\u1ee5ng.<\/span><\/span><\/p>\n

\u0110\u1ed1i v\u1edbi pin lithium-ion h\u00ecnh tr\u1ee5, do v\u1ecf th\u00e9p, khi pin ph\u00e1t n\u1ed5, c\u00f3 th\u1ec3 g\u00e2y ra t\u00e1c h\u1ea1i \u0111\u00e1ng k\u1ec3 cho c\u01a1 th\u1ec3 con ng\u01b0\u1eddi. Do \u0111\u00f3, c\u1ea7n \u0111\u1eb7c bi\u1ec7t ch\u00fa \u00fd \u0111\u1ebfn <\/span><\/span>th\u1eed nghi\u1ec7m \u0111\u1ea1n<\/span><\/span><\/a> . Theo y\u00eau c\u1ea7u c\u1ee7a UL, trong qu\u00e1 tr\u00ecnh th\u1eed nghi\u1ec7m, pin \u0111\u00e3 s\u1ea1c \u0111\u1ea7y \u0111\u01b0\u1ee3c \u0111\u1eb7t tr\u00ean l\u01b0\u1edbi kim lo\u1ea1i, \u0111\u01b0\u1ee3c ph\u1ee7 b\u1eb1ng l\u01b0\u1edbi th\u00e9p 20 l\u1ed7, sau \u0111\u00f3 \u0111\u01b0\u1ee3c nung n\u00f3ng cho \u0111\u1ebfn khi pin b\u1eaft l\u1eeda ho\u1eb7c b\u1ecb ph\u00e1 h\u1ee7y. Y\u00eau c\u1ea7u kh\u00f4ng \u0111\u01b0\u1ee3c c\u00f3 c\u00e1c h\u1ea1t r\u1eafn n\u00e0o tho\u00e1t ra ngo\u00e0i sau khi pin b\u1ecb \u0111\u1ed1t ch\u00e1y, khi\u1ebfn l\u01b0\u1edbi b\u1ecb v\u1ee1. Do m\u00e0ng pin co l\u1ea1i khi nung n\u00f3ng, c\u00e1c t\u1ea5m \u0111i\u1ec7n c\u1ef1c d\u01b0\u01a1ng v\u00e0 \u00e2m b\u00ean trong pin m\u1ea5t kh\u1ea3 n\u0103ng c\u00e1ch ly c\u1ee7a l\u1edbp b\u1ea3o v\u1ec7, d\u1eabn \u0111\u1ebfn di\u1ec7n t\u00edch ng\u1eafn m\u1ea1ch l\u1edbn.<\/span><\/span><\/p>\n

L\u00fac n\u00e0y, pin \u0111ang \u1edf tr\u1ea1ng th\u00e1i s\u1ea1c \u0111\u1ea7y, h\u1ec7 th\u1ed1ng pin t\u00edch t\u1ee5 n\u0103ng l\u01b0\u1ee3ng h\u00f3a h\u1ecdc cao nh\u1ea5t. Ch\u00e1y pin l\u00e0 \u0111i\u1ec1u kh\u00f4ng th\u1ec3 tr\u00e1nh kh\u1ecfi; Tuy nhi\u00ean, x\u00e9t \u0111\u1ebfn vi\u1ec7c kh\u00e1ch h\u00e0ng c\u00f3 th\u1ec3 \u1edf g\u1ea7n pin khi s\u1eed d\u1ee5ng, c\u1ea7n ki\u1ec3m so\u00e1t \u0111\u1ec3 kh\u00f4ng c\u00f3 v\u1eadt c\u1ee9ng r\u1eafn n\u00e0o b\u1ecb \u0111\u1ea9y ra trong qu\u00e1 tr\u00ecnh \u0111\u00e1nh l\u1eeda. \u1ede tr\u1ea1ng th\u00e1i n\u00e0y, \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o pin kh\u00f4ng ph\u00e1t n\u1ed5 m\u1eb7c d\u00f9 c\u00f3 h\u1ecfa ho\u1ea1n, c\u1ea7n thi\u1ebft k\u1ebf h\u1ee3p l\u00fd h\u01a1n c\u00e1c th\u00e0nh ph\u1ea7n c\u1ef1c pin. Thi\u1ebft k\u1ebf c\u1ef1c cao c\u1ea5p c\u00f3 th\u1ec3 cung c\u1ea5p k\u00eanh x\u1ea3 kh\u00ed tr\u01a1n tru khi x\u1ea3y ra hi\u1ec7n t\u01b0\u1ee3ng \u0111o\u1ea3n m\u1ea1ch pin \u1edf m\u1ed9t m\u1ee9c \u0111\u1ed9 nh\u1ea5t \u0111\u1ecbnh, lo\u1ea1i b\u1ecf s\u1ef1 t\u00edch t\u1ee5 nhi\u1ec7t li\u00ean t\u1ee5c, do \u0111\u00f3 cu\u1ed1i c\u00f9ng tr\u00e1nh \u0111\u01b0\u1ee3c t\u00ecnh tr\u1ea1ng n\u1ed5 pin.<\/span><\/span><\/p>\n

2. Ph\u00e2n t\u00edch c\u00e1c y\u1ebfu t\u1ed1 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn an to\u00e0n<\/span><\/span><\/strong><\/span><\/h1>\n

T\u00f3m l\u1ea1i, an to\u00e0n l\u00e0 r\u1ea5t quan tr\u1ecdng \u0111\u1ed1i v\u1edbi pin lithium h\u00ecnh tr\u1ee5. \u0110\u1ec3 \u0111\u1ea3m b\u1ea3o nhu c\u1ea7u an to\u00e0n c\u1ee7a kh\u00e1ch h\u00e0ng \u0111\u1ea7u cu\u1ed1i, nh\u00e2n vi\u00ean nghi\u00ean c\u1ee9u v\u00e0 ph\u00e1t tri\u1ec3n c\u1ea7n ph\u1ea3i c\u00f3 nh\u1eefng ph\u1ea3n \u1ee9ng nh\u1ea5t \u0111\u1ecbnh trong thi\u1ebft k\u1ebf pin. Ch\u1ee7 y\u1ebfu th\u1ec3 hi\u1ec7n \u1edf nh\u1eefng \u0111i\u1ec3m sau:<\/span><\/span><\/p>\n

2.1 V\u1eadt li\u1ec7u pin<\/span><\/span><\/span><\/h2>\n

S\u1ef1 tho\u00e1t nhi\u1ec7t l\u00e0 m\u1ed9t y\u1ebfu t\u1ed1 quan tr\u1ecdng g\u00e2y ra c\u00e1c m\u1ed1i nguy hi\u1ec3m ti\u1ec1m \u1ea9n v\u1ec1 an to\u00e0n trong pin lithium h\u00ecnh tr\u1ee5 v\u00e0 s\u1ef1 xu\u1ea5t hi\u1ec7n c\u1ee7a s\u1ef1 tho\u00e1t nhi\u1ec7t c\u00f3 li\u00ean quan ch\u1eb7t ch\u1ebd \u0111\u1ebfn v\u1eadt li\u1ec7u pin. Trong qu\u00e1 tr\u00ecnh do s\u1ef1 tho\u00e1t nhi\u1ec7t c\u1ee7a pin lithium g\u00e2y ra, s\u1ef1 ph\u00e2n h\u1ee7y m\u00e0ng SEI cung c\u1ea5p s\u1ef1 t\u00edch t\u1ee5 nhi\u1ec7t ban \u0111\u1ea7u v\u00e0 sau \u0111\u00f3 ph\u1ea3n \u1ee9ng ph\u00e2n h\u1ee7y \u0111i\u1ec7n c\u1ef1c \u00e2m\/ch\u1ea5t \u0111i\u1ec7n ph\u00e2n \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i \u0111\u1ec3 \u0111\u1ea1t \u0111\u1ebfn nhi\u1ec7t \u0111\u1ed9 c\u1ee7a ph\u1ea3n \u1ee9ng ph\u00e2n h\u1ee7y \u0111i\u1ec7n c\u1ef1c d\u01b0\u01a1ng\/ch\u1ea5t \u0111i\u1ec7n ph\u00e2n.<\/span><\/span><\/p>\n

Sau \u0111\u00f3, ph\u1ea3n \u1ee9ng ph\u00e2n h\u1ee7y c\u1ee7a ch\u1ea5t \u0111i\u1ec7n ph\u00e2n cu\u1ed1i c\u00f9ng d\u1eabn \u0111\u1ebfn hi\u1ec7n t\u01b0\u1ee3ng m\u1ea5t ki\u1ec3m so\u00e1t nhi\u1ec7t. Do \u0111\u00f3, vi\u1ec7c ch\u1eb7n b\u1ea5t k\u1ef3 b\u01b0\u1edbc n\u00e0o trong quy tr\u00ecnh c\u00f3 th\u1ec3 c\u1ea3i thi\u1ec7n \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh nhi\u1ec7t c\u1ee7a pin. C\u1ea3i thi\u1ec7n \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh nhi\u1ec7t c\u1ee7a m\u00e0ng SEI th\u00f4ng qua vi\u1ec7c s\u1eeda \u0111\u1ed5i giao di\u1ec7n v\u00e0 ki\u1ec3m so\u00e1t ph\u1ea1m vi nhi\u1ec7t \u0111\u1ed9 ph\u1ea3n \u1ee9ng c\u1ee7a v\u1eadt li\u1ec7u \u0111i\u1ec7n c\u1ef1c d\u01b0\u01a1ng v\u00e0 \u00e2m th\u00f4ng qua t\u1ed1i \u01b0u h\u00f3a v\u1eadt li\u1ec7u c\u00f3 th\u1ec3 l\u00e0m gi\u1ea3m hi\u1ec7n t\u01b0\u1ee3ng m\u1ea5t ki\u1ec3m so\u00e1t nhi\u1ec7t c\u1ee7a pin v\u00e0 c\u1ea3i thi\u1ec7n \u0111\u1ed9 an to\u00e0n t\u1ed5ng th\u1ec3 c\u1ee7a pin.<\/span><\/span><\/p>\n

2.2 Ki\u1ec3m so\u00e1t quy tr\u00ecnh<\/span><\/span><\/span><\/h2>\n

T\u00ednh nh\u1ea5t qu\u00e1n c\u1ee7a pin l\u00e0 \u0111i\u1ec1u ki\u1ec7n ti\u00ean quy\u1ebft \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o an to\u00e0n cho k\u1ebft n\u1ed1i n\u1ed1i ti\u1ebfp v\u00e0 song song. \u0110\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c t\u00ednh nh\u1ea5t qu\u00e1n c\u1ee7a pin, qu\u00e1 tr\u00ecnh s\u1ea3n xu\u1ea5t ph\u1ea3i \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t c\u1ea9n th\u1eadn. Vi\u1ec7c thi\u1ebfu s\u00f3t trong c\u00e1c chi ti\u1ebft c\u1ee7a quy tr\u00ecnh s\u1ea3n xu\u1ea5t th\u01b0\u1eddng g\u00e2y ra c\u00e1c v\u1ea5n \u0111\u1ec1 an to\u00e0n nghi\u00eam tr\u1ecdng.<\/span><\/span><\/p>\n

2.3 Thi\u1ebft k\u1ebf pin<\/span><\/span><\/span><\/h2>\n

Thi\u1ebft k\u1ebf pin h\u1ee3p l\u00fd c\u00f3 th\u1ec3 c\u1ea3i thi\u1ec7n hi\u1ec7u su\u1ea5t an to\u00e0n c\u1ee7a pin trong tr\u01b0\u1eddng h\u1ee3p l\u1ea1m d\u1ee5ng. \u0110\u1ed1i v\u1edbi pin lithium-ion h\u00ecnh tr\u1ee5, thi\u1ebft k\u1ebf an to\u00e0n c\u1ee7a pin ch\u1ee7 y\u1ebfu xem x\u00e9t hai \u0111i\u1ec3m sau:<\/span><\/span><\/p>\n

(1) L\u1ef1a ch\u1ecdn ph\u1ee5 gia \u0111i\u1ec7n ph\u00e2n. S\u1ea1c qu\u00e1 m\u1ee9c l\u00e0 m\u1ed9t trong nh\u1eefng t\u00ecnh tr\u1ea1ng ph\u1ed5 bi\u1ebfn c\u1ee7a t\u00ecnh tr\u1ea1ng l\u1ea1m d\u1ee5ng pin. Khi pin b\u1ecb s\u1ea1c qu\u00e1 m\u1ee9c, ch\u1ea5t \u0111i\u1ec7n ph\u00e2n b\u1ecb oxy h\u00f3a v\u00e0 ph\u00e2n h\u1ee7y, t\u1ea1o ra m\u1ed9t l\u01b0\u1ee3ng nhi\u1ec7t l\u1edbn, d\u1eabn \u0111\u1ebfn \u00e1p su\u1ea5t v\u00e0 nhi\u1ec7t \u0111\u1ed9 b\u00ean trong pin t\u0103ng \u0111\u1ed9t ng\u1ed9t, g\u00e2y ra nguy c\u01a1 n\u1ed5 ti\u1ec1m \u1ea9n cho pin h\u00ecnh tr\u1ee5. Nghi\u00ean c\u1ee9u v\u1ec1 vi\u1ec7c c\u1ea3i thi\u1ec7n an to\u00e0n s\u1ea1c qu\u00e1 m\u1ee9c b\u1eb1ng c\u00e1ch th\u00eam ph\u1ee5 gia ch\u1ed1ng s\u1ea1c qu\u00e1 m\u1ee9c v\u00e0o ch\u1ea5t \u0111i\u1ec7n ph\u00e2n \u0111ang d\u1ea7n \u0111\u01b0\u1ee3c \u0111\u00e0o s\u00e2u.<\/span><\/span><\/p>\n

(2) Thi\u1ebft k\u1ebf \u0111i\u1ec7n tr\u1edf b\u00ean trong th\u1ea5p. \u0110i\u1ec7n tr\u1edf b\u00ean trong c\u1ee7a pin l\u00e0 \u0111i\u1ec7n tr\u1edf m\u00e0 d\u00f2ng \u0111i\u1ec7n ch\u1ea1y qua pin g\u1eb7p ph\u1ea3i trong qu\u00e1 tr\u00ecnh ho\u1ea1t \u0111\u1ed9ng. Do \u0111i\u1ec7n tr\u1edf b\u00ean trong l\u1edbn, pin s\u1ebd sinh ra l\u01b0\u1ee3ng nhi\u1ec7t l\u1edbn trong qu\u00e1 tr\u00ecnh ho\u1ea1t \u0111\u1ed9ng, khi\u1ebfn nhi\u1ec7t \u0111\u1ed9 pin t\u0103ng cao, d\u1eabn \u0111\u1ebfn \u0111i\u1ec7n \u00e1p ho\u1ea1t \u0111\u1ed9ng x\u1ea3 pin gi\u1ea3m v\u00e0 th\u1eddi gian x\u1ea3 pin ng\u1eafn l\u1ea1i, \u1ea3nh h\u01b0\u1edfng nghi\u00eam tr\u1ecdng \u0111\u1ebfn hi\u1ec7u su\u1ea5t v\u00e0 tu\u1ed5i th\u1ecd c\u1ee7a pin, th\u1eadm ch\u00ed g\u00e2y ra tai n\u1ea1n an to\u00e0n nh\u01b0 n\u1ed5. C\u00f3 th\u1ec3 gi\u1ea3m \u0111i\u1ec7n tr\u1edf b\u00ean trong c\u1ee7a pin v\u00e0 c\u1ea3i thi\u1ec7n \u0111\u1ed9 an to\u00e0n c\u1ee7a pin b\u1eb1ng c\u00e1ch t\u1ed1i \u01b0u h\u00f3a t\u1ef7 l\u1ec7 v\u00e0 \u0111i\u1ec1u ch\u1ec9nh b\u1ed1 c\u1ee5c b\u00ean trong.<\/span><\/span><\/p>\n

\n
<\/div>\n
<\/div>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

T\u00ednh an to\u00e0n c\u1ee7a pin lithium ion \u0111\u1ec1 c\u1eadp \u0111\u1ebfn kh\u1ea3 n\u0103ng ng\u0103n ch\u1eb7n c\u00e1c nhi\u1ec5u lo\u1ea1n b\u00ean ngo\u00e0i ban \u0111\u1ea7u v\u00e0 g\u00e2y ra h\u00e0nh vi kh\u00f4ng an to\u00e0n trong qu\u00e1 tr\u00ecnh s\u1eed d\u1ee5ng b\u00ecnh th\u01b0\u1eddng ho\u1eb7c l\u1ea1m d\u1ee5ng. Pin lithium ion h\u00ecnh tr\u1ee5 c\u00f3 n\u0103ng l\u01b0\u1ee3ng ri\u00eang cao h\u01a1n v\u00e0 v\u1ecf pin \u0111\u01b0\u1ee3c l\u00e0m<\/p>\n","protected":false},"author":1,"featured_media":19715,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[88],"tags":[],"class_list":["post-19714","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\/19714","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=19714"}],"version-history":[{"count":3,"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/posts\/19714\/revisions"}],"predecessor-version":[{"id":22404,"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/posts\/19714\/revisions\/22404"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/media\/19715"}],"wp:attachment":[{"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/media?parent=19714"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/categories?post=19714"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/tags?post=19714"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}