{"id":19889,"date":"2022-01-20T10:08:34","date_gmt":"2022-01-20T10:08:34","guid":{"rendered":"http:\/\/dgbellvietnam.com\/analysis-of-the-lithium-ion-battery-safety-stability-test-part-1\/"},"modified":"2024-10-25T15:26:59","modified_gmt":"2024-10-25T08:26:59","slug":"analysis-of-the-lithium-ion-battery-safety-stability-test-part-1","status":"publish","type":"post","link":"https:\/\/dgbellvietnam.com\/en\/analysis-of-the-lithium-ion-battery-safety-stability-test-part-1\/","title":{"rendered":"Ph\u00e2n t\u00edch v\u1ec1 An to\u00e0n pin Lithium-ion; Th\u1eed nghi\u1ec7m \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh-Ph\u1ea7n 1"},"content":{"rendered":"
\n

V\u1edbi s\u1ef1 ti\u1ebfn b\u1ed9 kh\u00f4ng ng\u1eebng c\u1ee7a c\u00f4ng ngh\u1ec7 n\u0103ng l\u01b0\u1ee3ng, vi\u1ec7c s\u1eed d\u1ee5ng xe \u0111i\u1ec7n \u0111\u00e3 tr\u1edf th\u00e0nh gi\u1ea3i ph\u00e1p kh\u1ea3 thi cho c\u00e1c v\u1ea5n \u0111\u1ec1 v\u1ec1 m\u00f4i tr\u01b0\u1eddng. So v\u1edbi c\u00e1c lo\u1ea1i pin kh\u00e1c, pin lithium-ion c\u00f3 \u01b0u \u0111i\u1ec3m l\u00e0 m\u1eadt \u0111\u1ed9 n\u0103ng l\u01b0\u1ee3ng cao, tu\u1ed5i th\u1ecd d\u00e0i, d\u1ec5 s\u1eed d\u1ee5ng v\u00e0 b\u1ea3o d\u01b0\u1ee1ng, v.v. v\u00e0 \u0111\u00e3 tr\u1edf th\u00e0nh l\u1ef1a ch\u1ecdn h\u00e0ng \u0111\u1ea7u cho pin \u0111i\u1ec7n cho xe \u0111i\u1ec7n. Tuy nhi\u00ean, nguy c\u01a1 tai n\u1ea1n ti\u1ec1m \u1ea9n c\u1ee7a pin lithium-ion s\u1ebd g\u00e2y nguy hi\u1ec3m cho s\u1ef1 an to\u00e0n c\u1ee7a t\u00ednh m\u1ea1ng v\u00e0 t\u00e0i s\u1ea3n c\u1ee7a con ng\u01b0\u1eddi, v\u00e0 s\u1ef1 tin t\u01b0\u1edfng c\u1ee7a ng\u01b0\u1eddi ti\u00eau d\u00f9ng khi ch\u1ea5p nh\u1eadn xe \u0111i\u1ec7n s\u1ebd b\u1ecb n\u1ea3n l\u00f2ng. Pin lithium-ion n\u00f3i chung l\u00e0 an to\u00e0n trong \u0111i\u1ec1u ki\u1ec7n s\u1eed d\u1ee5ng b\u00ecnh th\u01b0\u1eddng, nh\u01b0ng trong tr\u01b0\u1eddng h\u1ee3p c\u00f3 khuy\u1ebft t\u1eadt ri\u00eang l\u1ebb trong qu\u00e1 tr\u00ecnh s\u1ea3n xu\u1ea5t v\u00e0 c\u00e1c \u0111i\u1ec1u ki\u1ec7n s\u1eed d\u1ee5ng sai ho\u1eb7c l\u1ea1m d\u1ee5ng nh\u01b0 nhi\u1ec7t \u0111\u1ed9 cao, \u0111o\u1ea3n m\u1ea1ch, qu\u00e1 t\u1ea3i v\u00e0 x\u1ea3, rung \u0111\u1ed9ng, \u0111\u00f9n v\u00e0 va \u0111\u1eadp, v.v. trong qu\u00e1 tr\u00ecnh s\u1eed d\u1ee5ng pin s\u1ebd x\u1ea3y ra ph\u1ea3n \u1ee9ng nhi\u1ec7t t\u1ea1o ra m\u1ed9t l\u01b0\u1ee3ng nhi\u1ec7t l\u1edbn, n\u1ebfu kh\u00f4ng k\u1ecbp th\u1eddi khu\u1ebfch t\u00e1n s\u1ebd g\u00e2y ra hi\u1ec7n t\u01b0\u1ee3ng m\u1ea5t ki\u1ec3m so\u00e1t nhi\u1ec7t, c\u00f3 th\u1ec3 khi\u1ebfn pin b\u1eaft l\u1eeda v\u00e0 ph\u00e1t n\u1ed5. T\u1eeb th\u00e1ng 1 \u0111\u1ebfn th\u00e1ng 7 n\u0103m 2018, \u0111\u00e3 c\u00f3 nhi\u1ec1u v\u1ee5 tai n\u1ea1n an to\u00e0n xe \u0111i\u1ec7n trong v\u00e0 ngo\u00e0i n\u01b0\u1edbc do pin lithium-ion.<\/span><\/span><\/p>\n

\u0110\u1ec3 \u0111\u00e1nh gi\u00e1 t\u00ednh an to\u00e0n c\u1ee7a pin lithium-ion, m\u1ed9t s\u1ed1 ti\u00eau chu\u1ea9n th\u1eed nghi\u1ec7m an to\u00e0n \u0111\u00e3 \u0111\u01b0\u1ee3c \u0111\u1ec1 xu\u1ea5t trong v\u00e0 ngo\u00e0i n\u01b0\u1edbc, ch\u1eb3ng h\u1ea1n nh\u01b0 ISO12405-3 IEC62133UL1642UN383. Trong b\u00e0i b\u00e1o n\u00e0y, k\u1ebft h\u1ee3p v\u1edbi ti\u00eau chu\u1ea9n pin \u0111i\u1ec7n trong n\u01b0\u1edbc hi\u1ec7n h\u00e0nh CHO xe \u0111i\u1ec7n GB\/T314852015 v\u00e0 ti\u00eau chu\u1ea9n b\u1ed9 pin GB\/T31467.3-2015, m\u1ed9t s\u1ed1 t\u00ecnh hu\u1ed1ng d\u1ec5 x\u1ea3y ra hi\u1ec7n t\u01b0\u1ee3ng m\u1ea5t ki\u1ec3m so\u00e1t nhi\u1ec7t c\u1ee7a pin \u0111\u01b0\u1ee3c ph\u00e2n t\u00edch v\u00e0 th\u1ea3o lu\u1eadn.<\/span><\/span><\/p>\n

1.1 <\/span><\/span>Th\u1eed nghi\u1ec7m \u0111\u1ed9 \u0111\u00e2m xuy\u00ean<\/span><\/span><\/a><\/span><\/h1>\n

Th\u1eed nghi\u1ec7m \u0111\u00e2m \u0111inh s\u1eed d\u1ee5ng kim th\u00e9p ch\u1ecbu nhi\u1ec7t \u0111\u1ed9 cao \u04445mm ~ \u04448mm (g\u00f3c c\u00f4n c\u1ee7a \u0111\u1ea7u kim l\u00e0 45 \u00b0 ~ 60 \u00b0 b\u1ec1 m\u1eb7t kim nh\u1eb5n v\u00e0 kh\u00f4ng c\u00f3 l\u1edbp oxit v\u00e0 d\u1ea7u) v\u1edbi t\u1ed1c \u0111\u1ed9 (25 \u00b1 5) mm\/gi\u00e2y t\u1eeb h\u01b0\u1edbng c\u1ee7a t\u1ea5m pin qua v\u1ecb tr\u00ed t\u00e2m h\u00ecnh h\u1ecdc c\u1ee7a kim th\u00e9p g\u1ea7n b\u1ec1 m\u1eb7t \u0111\u00e2m th\u1ee7ng \u0111\u1ec3 \u1edf trong pin \u0111\u1ec3 quan s\u00e1t trong 1 gi\u1edd. Trong qu\u00e1 tr\u00ecnh n\u00e0y, pin kh\u00f4ng \u0111\u01b0\u1ee3c n\u1ed5 v\u00e0 kh\u00f4ng b\u1eaft l\u1eeda. Th\u1eed nghi\u1ec7m \u0111\u1ee5c kim m\u00f4-\u0111un s\u1eed d\u1ee5ng kim th\u00e9p d\u00e0y h\u01a1n m\u1ed9t ch\u00fat \u1edf c\u00f9ng t\u1ed1c \u0111\u1ed9, t\u1eeb h\u01b0\u1edbng vu\u00f4ng g\u00f3c v\u1edbi t\u1ea5m pin l\u1ea7n l\u01b0\u1ee3t qua \u00edt nh\u1ea5t 3 pin \u0111\u01a1n (kim th\u00e9p \u1edf trong pin) quan s\u00e1t trong 1 gi\u1edd. Trong qu\u00e1 tr\u00ecnh n\u00e0y, m\u00f4-\u0111un pin kh\u00f4ng \u0111\u01b0\u1ee3c n\u1ed5 ho\u1eb7c b\u1eaft l\u1eeda.<\/span><\/span><\/p>\n

Sau khi kim th\u00e9p \u0111\u00e2m th\u1ee7ng b\u1ed9 t\u00e1ch pin, c\u00e1c t\u1ea5m c\u1ef1c d\u01b0\u01a1ng v\u00e0 c\u1ef1c \u00e2m c\u1ee7a pin t\u1ea1o th\u00e0nh m\u1ed9t v\u00f2ng l\u1eb7p v\u1edbi kim th\u00e9p, g\u00e2y ra hi\u1ec7n t\u01b0\u1ee3ng \u0111o\u1ea3n m\u1ea1ch b\u00ean trong pin t\u1ea1o ra m\u1ed9t s\u1ed1 l\u01b0\u1ee3ng l\u1edbn c\u00e1c \u0111i\u1ec3m n\u00f3ng. Khi nhi\u1ec7t \u0111\u1ed9 \u0111\u1ea1t t\u1edbi 130 \u00b0C, m\u00e0ng ng\u0103n chung b\u1eaft \u0111\u1ea7u co l\u1ea1i v\u00e0 tan ch\u1ea3y, khi\u1ebfn di\u1ec7n t\u00edch ti\u1ebfp x\u00fac \u0111i\u1ec7n c\u1ef1c d\u01b0\u01a1ng v\u00e0 \u00e2m c\u1ee7a pin l\u1edbn h\u01a1n \u0111\u1ec3 h\u00ecnh th\u00e0nh th\u00eam hi\u1ec7n t\u01b0\u1ee3ng \u0111o\u1ea3n m\u1ea1ch b\u00ean trong. Khi pin ho\u1ea1t \u0111\u1ed9ng h\u1ebft c\u00f4ng su\u1ea5t, c\u1ef1c d\u01b0\u01a1ng v\u00e0 c\u1ef1c \u00e2m \u1edf tr\u1ea1ng th\u00e1i b\u00e1n b\u1ec1n Khi nhi\u1ec7t \u0111\u1ed9 v\u01b0\u1ee3t qu\u00e1 180 \u00b0C, c\u1ef1c d\u01b0\u01a1ng v\u00e0 c\u1ef1c \u00e2m s\u1ebd c\u00f3 ph\u1ea3n \u1ee9ng t\u1ecfa nhi\u1ec7t m\u1ea1nh v\u1edbi ch\u1ea5t \u0111i\u1ec7n ph\u00e2n v\u00e0 t\u1ea1o ra m\u1ed9t l\u01b0\u1ee3ng l\u1edbn kh\u00ed (bao g\u1ed3m m\u1ed9t l\u01b0\u1ee3ng l\u1edbn kh\u00ed h\u1eefu c\u01a1 d\u1ec5 ch\u00e1y v\u00e0 m\u1ed9t l\u01b0\u1ee3ng nh\u1ecf oxy). Khi nhi\u1ec7t \u0111\u1ed9 t\u0103ng l\u00ean h\u01a1n 240 \u00b0 C, ch\u1ea5t k\u1ebft d\u00ednh c\u00f3 ch\u1ee9a flo b\u1eaft \u0111\u1ea7u ph\u1ea3n \u1ee9ng d\u1eef d\u1ed9i v\u1edbi cacbon lithium \u0111\u1ec3 gi\u1ea3i ph\u00f3ng m\u1ed9t l\u01b0\u1ee3ng nhi\u1ec7t l\u1edbn \u0110i\u1ec3m ch\u1edbp ch\u00e1y c\u1ee7a cacbonat tuy\u1ebfn t\u00ednh trong ch\u1ea5t \u0111i\u1ec7n ph\u00e2n n\u00f3ng th\u1ea5p v\u00e0 d\u1ec5 t\u1ea1o ra ng\u1ecdn l\u1eeda tr\u1ea7n Trong h\u1ea7u h\u1ebft c\u00e1c tr\u01b0\u1eddng h\u1ee3p, kim th\u00e9p \u0111\u00e2m th\u1ee7ng l\u1ed7 c\u1ee7a pin v\u00e0 d\u1ec5 phun ch\u1ea5t d\u1ec5 ch\u00e1y \u1edf nhi\u1ec7t \u0111\u1ed9 cao \u0111\u1ec3 b\u1eaft l\u1eeda trong kh\u00f4ng kh\u00ed t\u1ea1o th\u00e0nh hi\u1ec7n t\u01b0\u1ee3ng phun l\u1eeda (nh\u01b0 trong H\u00ecnh 1). Khi th\u1ef1c hi\u1ec7n th\u1eed nghi\u1ec7m ch\u00e2m kim c\u1ee7a pin m\u00f4-\u0111un, \u0111i\u1ec7n \u00e1p pin m\u00f4-\u0111un cao h\u01a1n, ch\u00e2m kim g\u00e2y ra hi\u1ec7n t\u01b0\u1ee3ng \u0111o\u1ea3n m\u1ea1ch b\u00ean trong khi d\u00f2ng \u0111i\u1ec7n t\u1ee9c th\u1eddi l\u1edbn h\u01a1n v\u00e0 c\u00f3 nhi\u1ec1u kh\u1ea3 n\u0103ng x\u1ea3y ra khi s\u1ef1 ch\u1ea1y tr\u1ed1n nhi\u1ec7t c\u1ee7a pin b\u1ecb b\u1eaft l\u1eeda v\u00e0 ph\u00e1t n\u1ed5.<\/span><\/span><\/p>\n

<\/p>\n

N\u1ec1n t\u1ea3ng \u0111i\u1ec7n \u00e1p c\u1ee7a pin lithium-ion c\u1ee7a h\u1ec7 th\u1ed1ng v\u1eadt li\u1ec7u ba th\u00e0nh ph\u1ea7n cao h\u01a1n n\u1ec1n t\u1ea3ng \u0111i\u1ec7n \u00e1p c\u1ee7a pin lithium-ion c\u1ee7a h\u1ec7 th\u1ed1ng lithium-ion c\u1ee7a h\u1ec7 th\u1ed1ng lithium-ion v\u00e0 t\u1ef7 l\u1ec7 v\u01b0\u1ee3t qua r\u1ea5t th\u1ea5p khi th\u1ef1c hi\u1ec7n th\u1eed nghi\u1ec7m ch\u00edch kim. V\u00e0o ng\u00e0y 30 th\u00e1ng 12 n\u0103m 2016, b\u1ed1n b\u1ed9 v\u00e0 \u1ee7y ban c\u1ee7a nh\u00e0 n\u01b0\u1edbc \u0111\u00e3 ban h\u00e0nh “Ch\u01b0\u01a1ng tr\u00ecnh tr\u1ee3 c\u1ea5p khuy\u1ebfn kh\u00edch xe n\u0103ng l\u01b0\u1ee3ng m\u1edbi v\u00e0 Y\u00eau c\u1ea7u k\u1ef9 thu\u1eadt s\u1ea3n ph\u1ea9m”, trong \u0111\u00f3 quy \u0111\u1ecbnh r\u1eb1ng th\u1eed nghi\u1ec7m ch\u00e2m c\u1ee9u trong ph\u01b0\u01a1ng ph\u00e1p th\u1eed nghi\u1ec7m v\u00e0 an to\u00e0n cho pin \u0111i\u1ec7n cho xe \u0111i\u1ec7n (s\u1ed1 ti\u00eau chu\u1ea9n GB \/ T31485-2015628638) s\u1ebd kh\u00f4ng \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n. Nh\u00f3m so\u1ea1n th\u1ea3o cho r\u1eb1ng th\u1eed nghi\u1ec7m ch\u00e2m c\u1ee9u kh\u00f4ng ph\u00f9 h\u1ee3p v\u1edbi ch\u1ebf \u0111\u1ed9 h\u1ecfng h\u00f3c th\u1ef1c t\u1ebf trong c\u00e1c ti\u00eau chu\u1ea9n IEC62660-2 v\u00e0 IEC62660-3 c\u1ee7a n\u01b0\u1edbc ngo\u00e0i v\u00e0 kh\u00f4ng s\u1eed d\u1ee5ng th\u1eed nghi\u1ec7m ch\u00e2m c\u1ee9u \u0111\u1ec3 \u0111\u00e1nh gi\u00e1 \u0111\u1ed9 an to\u00e0n c\u1ee7a pin. Hi\u1ec7n t\u1ea1i, c\u00e1ch \u0111i\u1ec1u ch\u1ec9nh c\u00e1c th\u00f4ng s\u1ed1 th\u1eed nghi\u1ec7m ch\u00e2m c\u1ee9u r\u1ea5t kh\u00f3 \u0111\u1ec3 sao ch\u00e9p ho\u00e0n to\u00e0n vi\u1ec7c s\u1eed d\u1ee5ng th\u1ef1c t\u1ebf c\u1ee7a c\u00e1c \u0111i\u1ec1u ki\u1ec7n h\u1ecfng h\u00f3c. Tuy nhi\u00ean, t\u1ea5t c\u1ea3 c\u00e1c lo\u1ea1i y\u00eau c\u1ea7u th\u1eed nghi\u1ec7m \u0111\u1ec1u kh\u00f3 c\u00f3 th\u1ec3 sao ch\u00e9p ho\u00e0n to\u00e0n th\u1eed nghi\u1ec7m t\u00ecnh tr\u1ea1ng h\u1ecfng h\u00f3c th\u1ef1c t\u1ebf, m\u00e0 ch\u1ec9 ph\u1ea3n \u00e1nh gi\u00e1n ti\u1ebfp m\u1ed9t s\u1ed1 ch\u1ebf \u0111\u1ed9 h\u1ecfng h\u00f3c \u0111i\u1ec3n h\u00ecnh \u0111\u01b0\u1ee3c tr\u00edch xu\u1ea5t t\u1eeb \u200b\u200bch\u1ebf \u0111\u1ed9 h\u1ecfng h\u00f3c. Trong c\u00e1c \u1ee9ng d\u1ee5ng th\u1ef1c t\u1ebf, ph\u1ea3i c\u00f3 kh\u1ea3 n\u0103ng v\u1eadt l\u1ea1 s\u1ebd \u0111\u00e2m v\u00e0o pin v\u00e0 g\u00e2y ra hi\u1ec7n t\u01b0\u1ee3ng \u0111o\u1ea3n m\u1ea1ch trong pin. Ngo\u00e0i hai ti\u00eau chu\u1ea9n IEC l\u00e0 SAEJ2464 v\u00e0 UL2580, c\u00e1c y\u00eau c\u1ea7u v\u1ec1 ch\u00e2m c\u1ee9u c\u0169ng \u0111\u01b0\u1ee3c n\u00eau r\u00f5 r\u00e0ng. V\u1ec1 nh\u1eefng kh\u00eda c\u1ea1nh n\u00e0y, c\u00e1c y\u00eau c\u1ea7u v\u1ec1 ti\u00eau chu\u1ea9n qu\u1ed1c gia \u0111\u00e3 \u0111\u01b0\u1ee3c gi\u1ea3m b\u1edbt. Th\u1ecb tr\u01b0\u1eddng xe \u0111i\u1ec7n thu\u1ea7n t\u00fay ng\u00e0y nay v\u1ec1 m\u1eadt \u0111\u1ed9 n\u0103ng l\u01b0\u1ee3ng pin \u0111ang t\u0103ng l\u00ean v\u00e0 m\u1ee9c \u0111\u1ed9 nguy hi\u1ec3m c\u1ee7a t\u00ecnh tr\u1ea1ng h\u1ecfng pin trong \u0111i\u1ec1u ki\u1ec7n th\u1eed nghi\u1ec7m c\u0169ng \u0111ang gia t\u0103ng.<\/span><\/span><\/p>\n

1.2 <\/span><\/span>Th\u1eed nghi\u1ec7m ng\u1eafn m\u1ea1ch<\/span><\/span><\/a><\/span><\/h1>\n

Y\u00eau c\u1ea7u c\u1ee7a ng\u1eafn m\u1ea1ch \u0111\u01a1n l\u00e0 c\u1ef1c d\u01b0\u01a1ng v\u00e0 c\u1ef1c \u00e2m c\u1ee7a pin \u0111\u01a1n ph\u1ea3i nh\u1ecf h\u01a1n 5m\u03a9 quan s\u00e1t trong 1 gi\u1edd qua ng\u1eafn m\u1ea1ch ngo\u00e0i trong 10 ph\u00fat. Trong qu\u00e1 tr\u00ecnh n\u00e0y, pin kh\u00f4ng \u0111\u01b0\u1ee3c n\u1ed5 v\u00e0 kh\u00f4ng b\u1eaft l\u1eeda. Ng\u1eafn m\u1ea1ch m\u00f4-\u0111un c\u1ea7n ph\u1ea3i l\u00e0 m\u00f4-\u0111un pin qua ng\u1eafn m\u1ea1ch ngo\u00e0i trong 10 ph\u00fat \u0110i\u1ec7n tr\u1edf \u0111\u01b0\u1eddng d\u00e2y ngo\u00e0i ph\u1ea3i nh\u1ecf h\u01a1n 5m\u03a9 quan s\u00e1t trong 1 gi\u1edd. Trong qu\u00e1 tr\u00ecnh n\u00e0y, m\u00f4-\u0111un pin kh\u00f4ng \u0111\u01b0\u1ee3c n\u1ed5 ho\u1eb7c b\u1eaft l\u1eeda.<\/span><\/span><\/p>\n

L\u1ea5y v\u00ed d\u1ee5 v\u1ec1 th\u1eed nghi\u1ec7m ng\u1eafn m\u1ea1ch c\u1ee7a m\u00f4-\u0111un pin v\u1eadt li\u1ec7u ba th\u00e0nh ph\u1ea7n 60Ah, \u0111i\u1ec7n \u00e1p pin c\u1ee7a m\u00f4-\u0111un \u0111\u01b0\u1ee3c s\u1ea1c \u0111\u1ea7y l\u00e0 204V v\u00e0 \u0111i\u1ec7n tr\u1edf ng\u1eafn m\u1ea1ch l\u00e0 3m2. Trong qu\u00e1 tr\u00ecnh th\u1eed nghi\u1ec7m, ng\u01b0\u1eddi ta th\u1ea5y r\u1eb1ng d\u00f2ng \u0111i\u1ec7n x\u1ea3 li\u00ean t\u1ee5c c\u1ee7a pin v\u1edbi d\u00f2ng \u0111i\u1ec7n c\u1ef1c \u0111\u1ea1i tho\u00e1ng qua l\u00e0 3293A trong qu\u00e1 tr\u00ecnh ng\u1eafn m\u1ea1ch l\u00e0 kho\u1ea3ng 3000A.<\/span><\/span><\/p>\n

<\/p>\n

D\u00f2ng \u0111i\u1ec7n l\u1edbn sinh ra trong qu\u00e1 tr\u00ecnh ng\u1eafn m\u1ea1ch s\u1ebd khi\u1ebfn nhi\u1ec7t \u0111\u1ed9 pin n\u00f3ng sinh ra b\u00ean trong pin lithium-ion t\u0103ng nhanh. D\u01b0\u1edbi t\u00e1c \u0111\u1ed9ng c\u1ee7a nhi\u1ec7t \u0111\u1ed9 cao, ph\u1ea3n \u1ee9ng t\u1ecfa nhi\u1ec7t v\u00e0 ph\u1ea3n \u1ee9ng sinh kh\u00ed gi\u1eefa v\u1eadt li\u1ec7u \u0111i\u1ec7n c\u1ef1c d\u01b0\u01a1ng v\u00e0 \u0111i\u1ec7n c\u1ef1c \u00e2m v\u00e0 ch\u1ea5t \u0111i\u1ec7n ph\u00e2n \u0111\u01b0\u1ee3c m\u00f4 t\u1ea3 \u1edf \u0111\u00e2y s\u1ebd x\u1ea3y ra b\u00ean trong pin. Ch\u1ea5t \u0111i\u1ec7n ph\u00e2n bay h\u01a1i v\u00e0 c\u00e1c kh\u00ed d\u1ec5 ch\u00e1y kh\u00e1c s\u1ebd n\u1ed5 tung qua v\u1ecf pin v\u00e0 lan ra kh\u00f4ng kh\u00ed nh\u01b0 th\u1ec3 hi\u1ec7n trong H\u00ecnh 3, trong khi nhi\u1ec7t \u0111\u1ed9 cao s\u1ebd \u0111\u1ed1t ch\u00e1y cacbonat tuy\u1ebfn t\u00ednh c\u00f3 \u0111i\u1ec3m ch\u1edbp ch\u00e1y th\u1ea5p h\u01a1n \u0111\u1ec3 t\u1ea1o th\u00e0nh hi\u1ec7n t\u01b0\u1ee3ng ch\u00e1y pin nh\u01b0 th\u1ec3 hi\u1ec7n trong H\u00ecnh 4.<\/span><\/span><\/p>\n

M\u1ed9t kh\u1ea3 n\u0103ng kh\u00e1c l\u00e0 ch\u00e1y b\u00ean ngo\u00e0i pin do ch\u1eadp m\u1ea1ch. Nhi\u1ec7t \u0111\u1ed9 c\u1ee7a pin ti\u1ebfp t\u1ee5c t\u0103ng trong qu\u00e1 tr\u00ecnh ch\u1eadp m\u1ea1ch v\u00e0 nhi\u1ec7t \u0111\u1ed9 cao s\u1ebd \u0111\u1ed1t ch\u00e1y c\u00e1c d\u00e2y gi\u00e1 \u0111\u1ee1 d\u1ec5 ch\u00e1y \u1edf b\u00ean ngo\u00e0i pin ho\u1eb7c l\u1edbp v\u1ecf b\u1ea3o v\u1ec7 pin kh\u00f4ng ch\u1ed1ng ch\u00e1y nh\u01b0 trong H\u00ecnh 5.<\/span><\/span><\/p>\n

<\/p>\n

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

V\u1edbi s\u1ef1 ti\u1ebfn b\u1ed9 kh\u00f4ng ng\u1eebng c\u1ee7a c\u00f4ng ngh\u1ec7 n\u0103ng l\u01b0\u1ee3ng, vi\u1ec7c s\u1eed d\u1ee5ng xe \u0111i\u1ec7n \u0111\u00e3 tr\u1edf th\u00e0nh gi\u1ea3i ph\u00e1p kh\u1ea3 thi cho c\u00e1c v\u1ea5n \u0111\u1ec1 v\u1ec1 m\u00f4i tr\u01b0\u1eddng. So v\u1edbi c\u00e1c lo\u1ea1i pin kh\u00e1c, pin lithium-ion c\u00f3 \u01b0u \u0111i\u1ec3m l\u00e0 m\u1eadt \u0111\u1ed9 n\u0103ng l\u01b0\u1ee3ng cao, tu\u1ed5i th\u1ecd d\u00e0i, d\u1ec5 s\u1eed d\u1ee5ng v\u00e0 b\u1ea3o<\/p>\n","protected":false},"author":1,"featured_media":19890,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[88],"tags":[],"class_list":["post-19889","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\/19889","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=19889"}],"version-history":[{"count":3,"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/posts\/19889\/revisions"}],"predecessor-version":[{"id":22099,"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/posts\/19889\/revisions\/22099"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/media\/19890"}],"wp:attachment":[{"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/media?parent=19889"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/categories?post=19889"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/tags?post=19889"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}