{"id":19674,"date":"2023-08-10T09:49:35","date_gmt":"2023-08-10T09:49:35","guid":{"rendered":"http:\/\/dgbellvietnam.com\/thermal-runaway-of-energy-storage-battery\/"},"modified":"2024-10-21T16:43:14","modified_gmt":"2024-10-21T09:43:14","slug":"thermal-runaway-of-energy-storage-battery","status":"publish","type":"post","link":"https:\/\/dgbellvietnam.com\/en\/thermal-runaway-of-energy-storage-battery\/","title":{"rendered":"Tho\u00e1t nhi\u1ec7t pin l\u01b0u tr\u1eef n\u0103ng l\u01b0\u1ee3ng"},"content":{"rendered":"
\n

1. Nguy\u00ean nh\u00e2n c\u00f3 th\u1ec3 g\u00e2y ra s\u1ef1 m\u1ea5t ki\u1ec3m so\u00e1t nhi\u1ec7t<\/span><\/span><\/strong><\/span><\/h1>\n

Pin l\u01b0u tr\u1eef n\u0103ng l\u01b0\u1ee3ng th\u01b0\u1eddng b\u1ecb m\u1ea5t ki\u1ec3m so\u00e1t nhi\u1ec7t khi s\u1eed d\u1ee5ng qu\u00e1 m\u1ee9c v\u00e0 c\u00e1c t\u00ecnh tr\u1ea1ng s\u1eed d\u1ee5ng sai ph\u1ed5 bi\u1ebfn \u0111\u01b0\u1ee3c chia th\u00e0nh ba lo\u1ea1i: s\u1eed d\u1ee5ng sai c\u01a1 h\u1ecdc, s\u1eed d\u1ee5ng sai \u0111i\u1ec7n v\u00e0 s\u1eed d\u1ee5ng sai nhi\u1ec7t.<\/span><\/span><\/p>\n

Hi\u1ec7n t\u01b0\u1ee3ng m\u1ea5t ki\u1ec3m so\u00e1t nhi\u1ec7t \u0111\u1ed9 ph\u1ed5 bi\u1ebfn nh\u1ea5t do l\u1ea1m d\u1ee5ng \u0111i\u1ec7n. Trong \u0111i\u1ec1u ki\u1ec7n l\u00e0m vi\u1ec7c l\u1ea1m d\u1ee5ng, pin lithium-ion kh\u00f4ng ch\u1ec9 gi\u1ea3i ph\u00f3ng nhi\u1ec7t ph\u1ea3n \u1ee9ng, nhi\u1ec7t \u00f4mi v\u00e0 nhi\u1ec7t ph\u00e2n c\u1ef1c m\u00e0 c\u00f2n bao g\u1ed3m nhi\u1ec7t gi\u1ea3i ph\u00f3ng do ng\u1eafn m\u1ea1ch b\u00ean trong v\u00e0 nhi\u1ec7t gi\u1ea3i ph\u00f3ng do ph\u1ea3n \u1ee9ng. Nhi\u1ec7t gi\u1ea3i ph\u00f3ng do ng\u1eafn m\u1ea1ch b\u00ean trong v\u00e0 ph\u1ea3n \u1ee9ng ph\u1ee5 (bao g\u1ed3m ph\u00e2n h\u1ee7y m\u00e0ng SEI, ph\u1ea3n \u1ee9ng \u0111i\u1ec7n ph\u00e2n \u0111i\u1ec7n c\u1ef1c d\u01b0\u01a1ng v\u00e0 \u00e2m, h\u00f2a tan m\u00e0ng, ph\u00e2n h\u1ee7y \u0111i\u1ec7n ph\u00e2n) l\u1edbn h\u01a1n nhi\u1ec1u so v\u1edbi nhi\u1ec7t sinh ra trong \u0111i\u1ec1u ki\u1ec7n ho\u1ea1t \u0111\u1ed9ng b\u00ecnh th\u01b0\u1eddng, c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn nhi\u1ec7t \u0111\u1ed9 pin t\u0103ng nhanh v\u00e0 d\u1ec5 d\u1eabn \u0111\u1ebfn t\u00ecnh tr\u1ea1ng n\u00f3ng kh\u00f4ng ki\u1ec3m so\u00e1t<\/span><\/span><\/p>\n

(1) L\u1ea1m d\u1ee5ng c\u01a1 h\u1ecdc<\/span><\/span><\/strong><\/span><\/h2>\n

\u0110\u1eb7c \u0111i\u1ec3m ch\u00ednh c\u1ee7a s\u1ef1 l\u1ea1m d\u1ee5ng c\u01a1 h\u1ecdc l\u00e0 s\u1ef1 d\u1ecbch chuy\u1ec3n t\u01b0\u01a1ng \u0111\u1ed1i c\u1ee7a c\u00e1c \u00f4 pin v\u00e0 m\u00f4-\u0111un d\u01b0\u1edbi t\u00e1c \u0111\u1ed9ng c\u1ee7a c\u00e1c l\u1ef1c b\u00ean ngo\u00e0i. C\u00e1c d\u1ea1ng ch\u00ednh c\u1ee7a \u00f4 pin (monome) bao g\u1ed3m va ch\u1ea1m, n\u00e9n v\u00e0 \u0111\u00e2m th\u1ee7ng. \u1ede c\u1ea5p \u0111\u1ed9 m\u00f4-\u0111un (b\u1ed9 pin), c\u00e1c v\u1ea5n \u0111\u1ec1 rung \u0111\u1ed9ng c\u0169ng c\u1ea7n \u0111\u01b0\u1ee3c xem x\u00e9t.<\/span><\/span><\/p>\n

Trong l\u1ea1m d\u1ee5ng c\u01a1 h\u1ecdc, nguy hi\u1ec3m nh\u1ea5t l\u00e0 \u0111\u00e2m th\u1ee7ng, khi d\u00e2y d\u1eabn \u0111\u01b0\u1ee3c \u0111\u01b0a v\u00e0o th\u00e2n pin, g\u00e2y ra hi\u1ec7n t\u01b0\u1ee3ng \u0111o\u1ea3n m\u1ea1ch tr\u1ef1c ti\u1ebfp gi\u1eefa c\u1ef1c d\u01b0\u01a1ng v\u00e0 c\u1ef1c \u00e2m. So v\u1edbi va ch\u1ea1m, b\u00f3p v\u00e0 c\u00e1c t\u00ecnh hu\u1ed1ng kh\u00e1c m\u00e0 hi\u1ec7n t\u01b0\u1ee3ng \u0111o\u1ea3n m\u1ea1ch b\u00ean trong ch\u1ec9 x\u1ea3y ra khi c\u00f3 x\u00e1c su\u1ea5t, th\u00ec qu\u00e1 tr\u00ecnh sinh nhi\u1ec7t trong qu\u00e1 tr\u00ecnh \u0111\u00e2m th\u1ee7ng m\u1ea1nh h\u01a1n, d\u1eabn \u0111\u1ebfn kh\u1ea3 n\u0103ng n\u00f3ng l\u00ean ngo\u00e0i t\u1ea7m ki\u1ec3m so\u00e1t cao h\u01a1n<\/span><\/span><\/p>\n

(2) L\u1ea1m d\u1ee5ng \u0111i\u1ec7n<\/span><\/span><\/strong><\/span><\/h2>\n

L\u1ea1m d\u1ee5ng \u0111i\u1ec7n th\u01b0\u1eddng bao g\u1ed3m m\u1ed9t s\u1ed1 h\u00ecnh th\u1ee9c nh\u01b0 s\u1ea1c qu\u00e1 m\u1ee9c, x\u1ea3 qu\u00e1 m\u1ee9c ho\u1eb7c \u0111o\u1ea3n m\u1ea1ch b\u00ean ngo\u00e0i, v\u00e0 s\u1ea1c qu\u00e1 m\u1ee9c l\u00e0 h\u00ecnh th\u1ee9c c\u00f3 nhi\u1ec1u kh\u1ea3 n\u0103ng ph\u00e1t tri\u1ec3n th\u00e0nh hi\u1ec7n t\u01b0\u1ee3ng m\u1ea5t ki\u1ec3m so\u00e1t nhi\u1ec7t. Do h\u00e0m l\u01b0\u1ee3ng n\u0103ng l\u01b0\u1ee3ng cao c\u1ee7a pin, s\u1ea1c qu\u00e1 m\u1ee9c l\u00e0 h\u00ecnh th\u1ee9c l\u1ea1m d\u1ee5ng \u0111i\u1ec7n c\u00f3 h\u1ea1i nh\u1ea5t v\u00e0 vi\u1ec7c t\u1ea1o ra nhi\u1ec7t v\u00e0 kh\u00ed l\u00e0 hai \u0111\u1eb7c \u0111i\u1ec3m chung trong qu\u00e1 tr\u00ecnh s\u1ea1c qu\u00e1 m\u1ee9c. Nhi\u1ec7t l\u01b0\u1ee3ng xu\u1ea5t ph\u00e1t t\u1eeb nhi\u1ec7t Ohmic v\u00e0 c\u00e1c ph\u1ea3n \u1ee9ng ph\u1ee5.<\/span><\/span><\/p>\n

\u0110\u1ea7u ti\u00ean, do ch\u00e8n lithium qu\u00e1 m\u1ee9c, c\u00e1c dendrite lithium ph\u00e1t tri\u1ec3n tr\u00ean b\u1ec1 m\u1eb7t anode v\u00e0 t\u1ef7 l\u1ec7 th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc c\u1ee7a cat\u1ed1t so v\u1edbi anode quy\u1ebft \u0111\u1ecbnh th\u1eddi \u0111i\u1ec3m c\u00e1c dendrite lithium b\u1eaft \u0111\u1ea7u ph\u00e1t tri\u1ec3n. Th\u1ee9 hai, s\u1ef1 t\u00e1ch r\u1eddi qu\u00e1 m\u1ee9c c\u1ee7a lithium d\u1eabn \u0111\u1ebfn s\u1ef1 s\u1ee5p \u0111\u1ed5 c\u1ee7a c\u1ea5u tr\u00fac \u0111i\u1ec7n c\u1ef1c d\u01b0\u01a1ng do nhi\u1ec7t v\u00e0 gi\u1ea3i ph\u00f3ng oxy, l\u00e0m t\u0103ng t\u1ed1c \u0111\u1ed9 ph\u00e2n h\u1ee7y ch\u1ea5t \u0111i\u1ec7n ph\u00e2n v\u00e0 t\u1ea1o ra m\u1ed9t l\u01b0\u1ee3ng l\u1edbn kh\u00ed. Do l\u1ef1c b\u00ean trong t\u0103ng l\u00ean, van an to\u00e0n m\u1edf ra v\u00e0 pin m\u1edf ra. Sau khi ho\u1ea1t ch\u1ea5t trong cell pin ti\u1ebfp x\u00fac v\u1edbi kh\u00f4ng kh\u00ed, n\u00f3 ph\u1ea3n \u1ee9ng d\u1eef d\u1ed9i v\u00e0 gi\u1ea3i ph\u00f3ng m\u1ed9t l\u01b0\u1ee3ng l\u1edbn<\/span><\/span><\/p>\n

(3) L\u1ea1m d\u1ee5ng nhi\u1ec7t<\/span><\/span><\/strong><\/span><\/h2>\n

L\u1ea1m d\u1ee5ng nhi\u1ec7t hi\u1ebfm khi t\u1ed3n t\u1ea1i \u0111\u1ed9c l\u1eadp v\u00e0 th\u01b0\u1eddng ph\u00e1t tri\u1ec3n t\u1eeb l\u1ea1m d\u1ee5ng c\u01a1 h\u1ecdc v\u00e0 \u0111i\u1ec7n, v\u00e0 cu\u1ed1i c\u00f9ng l\u00e0 m\u1ed9t ph\u1ea7n c\u1ee7a ti\u1ebfp x\u00fac v\u1edbi nhi\u1ec7t \u0111\u1ed9 t\u0103ng cao. N\u0103ng l\u01b0\u1ee3ng c\u1ee5c b\u1ed9 l\u00e0 t\u00ecnh hu\u1ed1ng l\u1ea1m d\u1ee5ng nhi\u1ec7t \u0111i\u1ec3n h\u00ecnh x\u1ea3y ra trong c\u00e1c b\u1ed9 pin. Ngo\u00e0i t\u00ecnh tr\u1ea1ng qu\u00e1 nhi\u1ec7t do l\u1ea1m d\u1ee5ng c\u01a1 h\u1ecdc v\u00e0 \u0111i\u1ec7n, ng\u01b0\u1eddi ta \u0111\u00e3 x\u00e1c nh\u1eadn r\u1eb1ng t\u00ecnh tr\u1ea1ng qu\u00e1 nhi\u1ec7t c\u0169ng c\u00f3 th\u1ec3 do c\u00e1c \u0111i\u1ec3m ti\u1ebfp x\u00fac k\u1ebft n\u1ed1i l\u1ecfng l\u1ebbo<\/span><\/span><\/p>\n

2. Qu\u00e1 tr\u00ecnh tho\u00e1t nhi\u1ec7t<\/span><\/span><\/strong><\/span><\/h1>\n

Qu\u00e1 tr\u00ecnh m\u1ea5t ki\u1ec3m so\u00e1t nhi\u1ec7t c\u1ee7a pin lithium-ion n\u00f3i chung c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c t\u00f3m t\u1eaft nh\u01b0 sau: \u2460 Ph\u00e2n h\u1ee7y SEI; \u2461 \u0110i\u1ec7n c\u1ef1c \u00e2m nh\u00fang lithium ph\u1ea3n \u1ee9ng v\u1edbi ch\u1ea5t \u0111i\u1ec7n ph\u00e2n; \u2462 M\u00e0ng n\u00f3ng ch\u1ea3y; \u2463 \u0110i\u1ec7n c\u1ef1c d\u01b0\u01a1ng tr\u1ea3i qua ph\u1ea3n \u1ee9ng ph\u00e2n h\u1ee7y; \u2464 Ch\u1ea5t \u0111i\u1ec7n ph\u00e2n t\u1ef1 tr\u1ea3i qua ph\u1ea3n \u1ee9ng ph\u00e2n h\u1ee7y; \u2465 Ch\u1ea5t \u0111i\u1ec7n ph\u00e2n bay h\u01a1i v\u00e0 \u0111\u1ed1t ch\u00e1y.<\/span><\/span><\/p>\n

1) Trong giai \u0111o\u1ea1n \u0111\u1ea7u ti\u00ean c\u1ee7a qu\u00e1 tr\u00ecnh s\u1ea1c b\u00ecnh th\u01b0\u1eddng, nhi\u1ec7t \u0111\u1ed9 b\u1ec1 m\u1eb7t c\u1ee7a pin t\u01b0\u01a1ng \u0111\u1ed1i th\u1ea5p (26-30 \u00b0 C). C\u00e1c ion lithium th\u01b0\u1eddng t\u00e1ch ra kh\u1ecfi \u0111i\u1ec7n c\u1ef1c d\u01b0\u01a1ng v\u00e0 ch\u00e8n v\u00e0o \u0111i\u1ec7n c\u1ef1c \u00e2m, d\u1eabn \u0111\u1ebfn \u0111i\u1ec7n \u00e1p pin t\u0103ng ch\u1eadm. Khi \u0111i\u1ec7n \u00e1p pin kho\u1ea3ng 3,6V, \u0111i\u1ec7n c\u1ef1c \u00e2m c\u1ee7a pin c\u00f3 xu h\u01b0\u1edbng b\u00e3o h\u00f2a<\/span><\/span><\/p>\n

2) Trong giai \u0111o\u1ea1n th\u1ee9 hai c\u1ee7a qu\u00e1 t\u1ea3i nh\u1eb9, nhi\u1ec7t \u0111\u1ed9 b\u1ec1 m\u1eb7t c\u1ee7a pin t\u0103ng \u0111\u00e1ng k\u1ec3 (39-46 \u00b0 C). \u0110i\u1ec7n c\u1ef1c d\u01b0\u01a1ng b\u1ecb m\u1ea5t lithium nghi\u00eam tr\u1ecdng v\u00e0 ion lithium c\u00f3 xu h\u01b0\u1edbng b\u00e3o h\u00f2a do \u0111\u01b0\u1ee3c nh\u00fang v\u00e0o \u0111i\u1ec7n c\u1ef1c \u00e2m. C\u00e1c ion lithium s\u1ebd k\u1ebft t\u1ee7a tr\u00ean b\u1ec1 m\u1eb7t c\u1ee7a \u0111i\u1ec7n c\u1ef1c \u00e2m v\u00e0 c\u00f3 xu h\u01b0\u1edbng l\u1eafng \u0111\u1ecdng \u1edf v\u00f9ng c\u1ea1nh c\u1ee7a \u0111i\u1ec7n c\u1ef1c \u00e2m g\u1ea7n \u0111i\u1ec7n c\u1ef1c d\u01b0\u01a1ng h\u01a1n. C\u00e1c nghi\u00ean c\u1ee9u tr\u01b0\u1edbc \u0111\u00e2y \u0111\u00e3 ch\u1ec9 ra r\u1eb1ng c\u00e1c dendrite lithium k\u1ebft t\u1ee7a tr\u00ean b\u1ec1 m\u1eb7t c\u1ee7a \u0111i\u1ec7n c\u1ef1c \u00e2m s\u1ebd ph\u1ea3n \u1ee9ng v\u1edbi ch\u1ea5t k\u1ebft d\u00ednh h\u1eefu c\u01a1 c\u1ee7a \u0111i\u1ec7n c\u1ef1c \u00e2m.<\/span><\/span><\/p>\n

C\u00e1c nghi\u00ean c\u1ee9u tr\u01b0\u1edbc \u0111\u00e2y \u0111\u00e3 ch\u1ec9 ra r\u1eb1ng c\u00e1c dendrite lithium k\u1ebft t\u1ee7a tr\u00ean b\u1ec1 m\u1eb7t \u0111i\u1ec7n c\u1ef1c \u00e2m s\u1ebd ph\u1ea3n \u1ee9ng v\u1edbi ch\u1ea5t k\u1ebft d\u00ednh h\u1eefu c\u01a1 c\u1ee7a \u0111i\u1ec7n c\u1ef1c \u00e2m \u0111\u1ec3 t\u1ea1o ra k\u1ebft t\u1ee7a kim lo\u1ea1i lithium hydro v\u00e0 lo\u1ea1i b\u1ecf lithium m\u1ea1nh kh\u1ecfi \u0111i\u1ec7n c\u1ef1c d\u01b0\u01a1ng, d\u1eabn \u0111\u1ebfn \u0111i\u1ec7n \u00e1p pin li\u00ean t\u1ee5c t\u0103ng.<\/span><\/span><\/p>\n

3) Giai \u0111o\u1ea1n th\u1ee9 ba, dendrite lithium tr\u1ea3i qua ph\u1ea3n \u1ee9ng ph\u1ee5 v\u1edbi ch\u1ea5t \u0111i\u1ec7n ph\u00e2n \u0111\u1ec3 sinh nhi\u1ec7t, d\u1eabn \u0111\u1ebfn nhi\u1ec7t \u0111\u1ed9 b\u00ean trong pin t\u0103ng l\u00ean. Khi nhi\u1ec7t \u0111\u1ed9 v\u01b0\u1ee3t qu\u00e1 90 \u2103, n\u00f3 s\u1ebd k\u00edch ho\u1ea1t s\u1ef1 ph\u00e2n h\u1ee7y c\u1ee7a m\u00e0ng SE v\u00e0 sinh ra kh\u00ed<\/span><\/span><\/p>\n

4) Giai \u0111o\u1ea1n th\u1ee9 t\u01b0, khi nhi\u1ec7t \u0111\u1ed9 b\u00ean trong pin lithium-ion \u0111\u1ea1t kho\u1ea3ng 130\u2103, b\u1ed9 t\u00e1ch n\u00f3ng ch\u1ea3y, g\u00e2y ra m\u1ed9t v\u00f9ng ng\u1eafn m\u1ea1ch l\u1edbn trong pin v\u00e0 sinh ra nhi\u1ec7t. Nhi\u1ec7t \u0111\u1ed9 cao do t\u00edch t\u1ee5 nhi\u1ec7t t\u1ea1o th\u00e0nh ph\u1ea3n h\u1ed3i t\u00edch c\u1ef1c \u0111\u1ed1i v\u1edbi ph\u1ea3n \u1ee9ng b\u00ean trong, sinh ra kh\u00ed v\u00e0 pin b\u1eaft \u0111\u1ea7u tr\u1ea3i qua c\u00e1c ph\u1ea3n \u1ee9ng t\u1ef1 t\u0103ng t\u1ed1c kh\u00f4ng ki\u1ec3m so\u00e1t \u0111\u01b0\u1ee3c, khi\u1ebfn nhi\u1ec7t \u0111\u1ed9 c\u1ee7a pin t\u0103ng l\u00ean.<\/span><\/span><\/p>\n

Trong ph\u1ea1m vi 200~300\u2103, b\u1ea3n th\u00e2n ch\u1ea5t \u0111i\u1ec7n ph\u00e2n s\u1ebd tr\u1ea3i qua ph\u1ea3n \u1ee9ng ph\u00e2n h\u1ee7y, t\u1ea1o ra kh\u00ed v\u00e0 cu\u1ed1i c\u00f9ng d\u1eabn \u0111\u1ebfn ch\u00e1y n\u1ed5. T\u00e1c h\u1ea1i do s\u1ef1 m\u1ea5t ki\u1ec3m so\u00e1t nhi\u1ec7t c\u1ee7a m\u1ed9t pin \u0111\u01a1n l\u1ebb g\u00e2y ra n\u00f3i chung l\u00e0 h\u1ea1n ch\u1ebf, nh\u01b0ng trong k\u1ecbch b\u1ea3n \u1ee9ng d\u1ee5ng c\u1ee7a nh\u00e0 m\u00e1y \u0111i\u1ec7n l\u01b0u tr\u1eef n\u0103ng l\u01b0\u1ee3ng, s\u1ed1 l\u01b0\u1ee3ng pin \u0111\u01a1n l\u1ebb l\u1edbn v\u00e0 \u0111\u01b0\u1ee3c s\u1eafp x\u1ebfp ch\u1eb7t ch\u1ebd. Khi m\u1ed9t pin \u0111\u01a1n l\u1ebb b\u1ecb m\u1ea5t ki\u1ec3m so\u00e1t nhi\u1ec7t, nhi\u1ec7t sinh ra c\u00f3 th\u1ec3 truy\u1ec1n sang c\u00e1c pin xung quanh, khi\u1ebfn s\u1ef1 m\u1ea5t ki\u1ec3m so\u00e1t nhi\u1ec7t lan r\u1ed9ng v\u00e0 t\u00e1c h\u1ea1i g\u00e2y ra s\u1ebd \u0111\u01b0\u1ee3c m\u1edf r\u1ed9ng.<\/span><\/span><\/p>\n

3. Ph\u00e1t hi\u1ec7n c\u00e1c th\u00f4ng s\u1ed1 \u0111\u1eb7c tr\u01b0ng<\/span><\/span><\/strong><\/span><\/h1>\n

1) \u0110i\u1ec7n tr\u1edf b\u00ean trong c\u1ee7a pin gi\u1ea3m khi nhi\u1ec7t \u0111\u1ed9 t\u0103ng trong ph\u1ea1m vi nhi\u1ec7t \u0111\u1ed9 ho\u1ea1t \u0111\u1ed9ng b\u00ecnh th\u01b0\u1eddng. Tuy nhi\u00ean, khi pin b\u1ecb m\u1ea5t ki\u1ec3m so\u00e1t nhi\u1ec7t v\u00e0 g\u00e2y ra s\u1ef1 gia t\u0103ng nhi\u1ec7t \u0111\u1ed9 b\u1ea5t th\u01b0\u1eddng, \u0111i\u1ec7n tr\u1edf b\u00ean trong c\u1ee7a pin t\u0103ng \u0111\u00e1ng k\u1ec3. Tuy nhi\u00ean, s\u1ef1 thay \u0111\u1ed5i \u0111\u1ed9t ng\u1ed9t v\u1ec1 \u0111i\u1ec7n tr\u1edf b\u00ean trong c\u1ee7a pin c\u0169ng c\u00f3 th\u1ec3 b\u1ecb \u1ea3nh h\u01b0\u1edfng b\u1edfi c\u00e1c y\u1ebfu t\u1ed1 kh\u00e1c, ch\u1eb3ng h\u1ea1n nh\u01b0 nhi\u1ec5u lo\u1ea1n b\u00ean ngo\u00e0i ho\u1eb7c ti\u1ebfp x\u00fac k\u00e9m do m\u1ed9t s\u1ed1 l\u00fd do, \u0111i\u1ec1u n\u00e0y c\u0169ng c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn \u0111i\u1ec7n tr\u1edf b\u00ean trong c\u1ee7a pin t\u0103ng \u0111\u1ed9t ng\u1ed9t. Do \u0111\u00f3, ch\u1ec9 d\u1ef1a v\u00e0o s\u1ef1 thay \u0111\u1ed5i v\u1ec1 \u0111i\u1ec7n tr\u1edf \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh xem pin c\u00f3 b\u1ecb m\u1ea5t ki\u1ec3m so\u00e1t nhi\u1ec7t hay kh\u00f4ng l\u00e0 kh\u00f4ng ch\u00ednh x\u00e1c v\u00e0 c\u1ea7n ph\u1ea3i k\u1ebft h\u1ee3p v\u1edbi c\u00e1c th\u00f4ng s\u1ed1 \u0111\u1eb7c tr\u01b0ng kh\u00e1c \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh.<\/span><\/span><\/p>\n

2) Nhi\u1ec7t \u0111\u1ed9 l\u00e0 m\u1ed9t th\u00f4ng s\u1ed1 quan tr\u1ecdng c\u1ee7a hi\u1ec7n t\u01b0\u1ee3ng m\u1ea5t ki\u1ec3m so\u00e1t nhi\u1ec7t trong pin lithium-ion, v\u00ec c\u00f3 m\u1ed1i quan h\u1ec7 h\u1ed7 tr\u1ee3 l\u1eabn nhau gi\u1eefa nhi\u1ec7t \u0111\u1ed9 v\u00e0 c\u00e1c ph\u1ea3n \u1ee9ng ph\u1ee5 khi pin b\u1ecb m\u1ea5t ki\u1ec3m so\u00e1t nhi\u1ec7t, t\u1ea1o th\u00e0nh ph\u1ea3n h\u1ed3i t\u00edch c\u1ef1c. Nhi\u1ec1u thi\u1ebft b\u1ecb c\u1ea3nh b\u00e1o pin v\u00e0 h\u1ec7 th\u1ed1ng qu\u1ea3n l\u00fd pin \u0111\u01b0\u1ee3c trang b\u1ecb c\u00e1c thi\u1ebft b\u1ecb c\u1ea3m bi\u1ebfn nhi\u1ec7t \u0111\u1ed9 \u0111\u1ec3 theo d\u00f5i nhi\u1ec7t \u0111\u1ed9 pin. Khi nhi\u1ec7t \u0111\u1ed9 v\u01b0\u1ee3t qu\u00e1 ng\u01b0\u1ee1ng c\u00e0i \u0111\u1eb7t tr\u01b0\u1edbc, t\u00edn hi\u1ec7u b\u00e1o \u0111\u1ed9ng s\u1ebd \u0111\u01b0\u1ee3c ph\u00e1t ra ho\u1eb7c c\u00e1c h\u00e0nh \u0111\u1ed9ng t\u01b0\u01a1ng \u1ee9ng s\u1ebd \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n.<\/span><\/span><\/p>\n

M\u1ed9t chi\u1ebfn l\u01b0\u1ee3c c\u1ea3nh b\u00e1o ba c\u1ea5p \u0111\u1ed9 \u0111\u00e3 \u0111\u01b0\u1ee3c \u0111\u1ec1 xu\u1ea5t cho pin lithium-ion 18650 v\u00e0 b\u1ed9 pin: khi nhi\u1ec7t \u0111\u1ed9 pin v\u01b0\u1ee3t qu\u00e1 50 \u2103, dung l\u01b0\u1ee3ng s\u1ebd gi\u1ea3m v\u00e0 nhi\u1ec7t \u0111\u1ed9 s\u1ebd t\u0103ng ch\u1eadm trong ph\u1ea1m vi 50-80 \u2103, trong \u0111\u00f3 70-80 \u2103 l\u00e0 ch\u1eadm nh\u1ea5t. Do \u0111\u00f3, nhi\u1ec7t \u0111\u1ed9 c\u1ea3nh b\u00e1o ba c\u1ea5p \u0111\u1ed9 \u0111\u01b0\u1ee3c \u0111\u1eb7t l\u1ea7n l\u01b0\u1ee3t l\u00e0 50 \u2103, 70 \u2103 v\u00e0 80 \u2103. Tuy nhi\u00ean, ph\u01b0\u01a1ng ph\u00e1p gi\u00e1m s\u00e1t nhi\u1ec7t \u0111\u1ed9 b\u1ec1 m\u1eb7t n\u00e0y c\u00f3 hi\u1ec7n t\u01b0\u1ee3ng tr\u1ec5, v\u00ec nhi\u1ec7t sinh ra b\u00ean trong m\u1ea5t m\u1ed9t kho\u1ea3ng th\u1eddi gian nh\u1ea5t \u0111\u1ecbnh \u0111\u1ec3 truy\u1ec1n \u0111\u1ebfn b\u1ec1 m\u1eb7t v\u00e0 c\u0169ng c\u00f3 s\u1ef1 t\u1ea3n nhi\u1ec7t trong qu\u00e1 tr\u00ecnh truy\u1ec1n (trao \u0111\u1ed5i nhi\u1ec7t gi\u1eefa pin v\u00e0 m\u00f4i tr\u01b0\u1eddng).<\/span><\/span><\/p>\n

3) Khi pin \u0111ang trong giai \u0111o\u1ea1n \u0111\u1ea7u c\u1ee7a hi\u1ec7n t\u01b0\u1ee3ng m\u1ea5t ki\u1ec3m so\u00e1t nhi\u1ec7t, c\u00e1c kh\u00ed \u0111\u1eb7c tr\u01b0ng n\u00e0y s\u1ebd d\u1ea7n d\u1ea7n t\u0103ng n\u1ed3ng \u0111\u1ed9 t\u1eeb \u0111\u1ea7u, cho th\u1ea5y s\u1ef1 thay \u0111\u1ed5i \u0111\u00e1ng k\u1ec3 v\u1ec1 \u0111\u1eb7c t\u00ednh. Do \u0111\u00f3, s\u1eed d\u1ee5ng c\u00e1c c\u1ea3m bi\u1ebfn kh\u00ed t\u01b0\u01a1ng \u1ee9ng \u0111\u1ec3 c\u1ea3nh b\u00e1o s\u1edbm hi\u1ec7n t\u01b0\u1ee3ng m\u1ea5t ki\u1ec3m so\u00e1t nhi\u1ec7t c\u1ee7a pin c\u0169ng l\u00e0 m\u1ed9t c\u00e1ch quan tr\u1ecdng.<\/span><\/span><\/p>\n

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

1. Nguy\u00ean nh\u00e2n c\u00f3 th\u1ec3 g\u00e2y ra s\u1ef1 m\u1ea5t ki\u1ec3m so\u00e1t nhi\u1ec7t Pin l\u01b0u tr\u1eef n\u0103ng l\u01b0\u1ee3ng th\u01b0\u1eddng b\u1ecb m\u1ea5t ki\u1ec3m so\u00e1t nhi\u1ec7t khi s\u1eed d\u1ee5ng qu\u00e1 m\u1ee9c v\u00e0 c\u00e1c t\u00ecnh tr\u1ea1ng s\u1eed d\u1ee5ng sai ph\u1ed5 bi\u1ebfn \u0111\u01b0\u1ee3c chia th\u00e0nh ba lo\u1ea1i: s\u1eed d\u1ee5ng sai c\u01a1 h\u1ecdc, s\u1eed d\u1ee5ng sai \u0111i\u1ec7n v\u00e0 s\u1eed d\u1ee5ng sai<\/p>\n","protected":false},"author":1,"featured_media":19675,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[88],"tags":[],"class_list":["post-19674","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\/19674","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=19674"}],"version-history":[{"count":2,"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/posts\/19674\/revisions"}],"predecessor-version":[{"id":21969,"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/posts\/19674\/revisions\/21969"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/media\/19675"}],"wp:attachment":[{"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/media?parent=19674"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/categories?post=19674"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/tags?post=19674"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}