{"id":19668,"date":"2023-08-31T09:22:34","date_gmt":"2023-08-31T09:22:34","guid":{"rendered":"http:\/\/dgbellvietnam.com\/low-temperature-test-for-li-ion-ev-battery\/"},"modified":"2024-10-21T16:41:04","modified_gmt":"2024-10-21T09:41:04","slug":"low-temperature-test-for-li-ion-ev-battery","status":"publish","type":"post","link":"https:\/\/dgbellvietnam.com\/en\/low-temperature-test-for-li-ion-ev-battery\/","title":{"rendered":"Th\u1eed nghi\u1ec7m nhi\u1ec7t \u0111\u1ed9 th\u1ea5p cho pin Li-ion EV"},"content":{"rendered":"
\n

Pin lithium ion \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong l\u0129nh v\u1ef1c xe \u0111i\u1ec7n do c\u00f3 \u0111i\u1ec7n \u00e1p cao, n\u0103ng l\u01b0\u1ee3ng ri\u00eang cao v\u00e0 hi\u1ec7u su\u1ea5t s\u1ea1c t\u1ed1t.<\/span><\/span><\/p>\n

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

L\u1ea5y pin lithium-ion c\u00f3 dung l\u01b0\u1ee3ng \u0111\u1ecbnh m\u1ee9c l\u00e0 70Ah cho xe \u0111i\u1ec7n l\u00e0m v\u00ed d\u1ee5, m\u1ed9t th\u1eed nghi\u1ec7m dung l\u01b0\u1ee3ng \u1edf nhi\u1ec7t \u0111\u1ed9 ph\u00f2ng (20 \u2103) \u200b\u200bv\u00e0 m\u1ed9t th\u1eed nghi\u1ec7m dung l\u01b0\u1ee3ng <\/span><\/span>\u1edf nhi\u1ec7t \u0111\u1ed9 th\u1ea5p<\/span><\/span><\/a> (-20 \u2103) \u200b\u200b\u0111\u00e3 \u0111\u01b0\u1ee3c ti\u1ebfn h\u00e0nh \u0111\u1ec3 so s\u00e1nh t\u00e1c \u0111\u1ed9ng c\u1ee7a nhi\u1ec7t \u0111\u1ed9 \u0111\u1ebfn dung l\u01b0\u1ee3ng c\u1ee7a pin lithium-ion. Pin lithium-ion c\u00f3 \u0111i\u1ec7n \u00e1p ng\u1eaft s\u1ea1c l\u00e0 36V v\u00e0 \u0111i\u1ec7n \u00e1p ng\u1eaft x\u1ea3 l\u00e0 2,0V. Sau \u0111\u00f3, c\u00e1c th\u1eed nghi\u1ec7m dung l\u01b0\u1ee3ng x\u1ea3 \u0111\u01b0\u1ee3c ti\u1ebfn h\u00e0nh trong m\u00f4i tr\u01b0\u1eddng 20 \u2103 v\u00e0 -20 \u2103, v\u00e0 th\u1eed nghi\u1ec7m k\u1ebft th\u00fac khi \u0111i\u1ec7n \u00e1p ng\u1eaft x\u1ea3 l\u00e0 2,0V.<\/span><\/span><\/p>\n

2 C\u00e1c y\u1ebfu t\u1ed1 ch\u00ednh \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn kh\u1ea3 n\u0103ng ch\u1ecbu nhi\u1ec7t \u0111\u1ed9 th\u1ea5p<\/span><\/span><\/strong><\/span><\/h1>\n

Hi\u1ec7u su\u1ea5t <\/span><\/span>nhi\u1ec7t \u0111\u1ed9 th\u1ea5p<\/span><\/span><\/a> c\u1ee7a pin lithium-ion ch\u1ee7 y\u1ebfu b\u1ecb \u1ea3nh h\u01b0\u1edfng b\u1edfi c\u00e1c lo\u1ea1i ch\u1ea5t \u0111i\u1ec7n ph\u00e2n, v\u1eadt li\u1ec7u \u0111i\u1ec7n c\u1ef1c d\u01b0\u01a1ng v\u00e0 \u00e2m, v.v. Hi\u1ec7u su\u1ea5t nhi\u1ec7t \u0111\u1ed9 th\u1ea5p c\u1ee7a pin lithium-ion c\u0169ng thay \u0111\u1ed5i t\u00f9y thu\u1ed9c v\u00e0o lo\u1ea1i ch\u1ea5t \u0111i\u1ec7n ph\u00e2n v\u00e0 v\u1eadt li\u1ec7u \u0111i\u1ec7n c\u1ef1c d\u01b0\u01a1ng v\u00e0 \u00e2m. Trong \u0111i\u1ec1u ki\u1ec7n nhi\u1ec7t \u0111\u1ed9 th\u1ea5p, qu\u00e1 tr\u00ecnh \u0111\u00f4ng \u0111\u1eb7c c\u1ee7a m\u1ed9t s\u1ed1 dung m\u00f4i trong ch\u1ea5t \u0111i\u1ec7n ph\u00e2n c\u1ee7a pin d\u1eabn \u0111\u1ebfn kh\u00f3 kh\u0103n trong vi\u1ec7c di chuy\u1ec3n ion v\u00e0 gi\u1ea3m \u0111\u1ed9 d\u1eabn \u0111i\u1ec7n; \u0110i\u1ec7n tr\u1edf truy\u1ec1n c\u1ee7a c\u00e1c ion lithium trong v\u1eadt li\u1ec7u \u0111i\u1ec7n c\u1ef1c t\u0103ng l\u00ean; S\u1ef1 khu\u1ebfch t\u00e1n v\u00e0 truy\u1ec1n \u0111i\u1ec7n t\u00edch lithium gi\u1eefa giao di\u1ec7n \u0111i\u1ec7n c\u1ef1c v\u00e0 ch\u1ea5t \u0111i\u1ec7n ph\u00e2n ch\u1eadm h\u01a1n v\u00e0 kh\u1ea3 n\u0103ng th\u1ea5m \u01b0\u1edbt c\u1ee7a ch\u1ea5t \u0111i\u1ec7n ph\u00e2n v\u00e0o b\u1ed9 t\u00e1ch v\u00e0 s\u1ef1 th\u00e2m nh\u1eadp c\u1ee7a c\u00e1c ion lithium v\u00e0o b\u1ed9 t\u00e1ch tr\u1edf n\u00ean t\u1ec7 h\u01a1n.<\/span><\/span><\/p>\n

2.1 \u1ea2nh h\u01b0\u1edfng c\u1ee7a ch\u1ea5t \u0111i\u1ec7n ph\u00e2n<\/span><\/span><\/strong><\/span><\/h2>\n

\u1ea2nh h\u01b0\u1edfng c\u1ee7a ch\u1ea5t \u0111i\u1ec7n ph\u00e2n l\u00e0 m\u1ed9t th\u00e0nh ph\u1ea7n quan tr\u1ecdng c\u1ee7a pin lithium-ion. S\u1ef1 truy\u1ec1n ion gi\u1eefa c\u00e1c \u0111i\u1ec7n c\u1ef1c d\u01b0\u01a1ng v\u00e0 \u00e2m b\u00ean trong pin th\u01b0\u1eddng \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng h\u1ed7n h\u1ee3p c\u00e1c dung m\u00f4i h\u1eefu c\u01a1 kh\u00f4ng ch\u1ee9a n\u01b0\u1edbc h\u00f2a tan trong mu\u1ed1i lithium. C\u00e1c dung m\u00f4i h\u1eefu c\u01a1 nh\u01b0 etylen cacbonat (EC), propylen cacbonat (PC), dimethyl cacbonat (DMC), diethyl cacbonat (DEC) v\u00e0 methyl etyl cacbonat (EMC) hi\u1ec7n \u0111ang \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong ch\u1ea5t \u0111i\u1ec7n ph\u00e2n pin lithium-ion. T\u00e1c \u0111\u1ed9ng c\u1ee7a ch\u1ea5t \u0111i\u1ec7n ph\u00e2n \u0111\u1ebfn hi\u1ec7u su\u1ea5t nhi\u1ec7t \u0111\u1ed9 th\u1ea5p ch\u1ee7 y\u1ebfu \u0111\u01b0\u1ee3c ph\u1ea3n \u00e1nh trong t\u00e1c \u0111\u1ed9ng c\u1ee7a ch\u00fang \u0111\u1ebfn \u0111\u1ed9 d\u1eabn \u0111i\u1ec7n v\u00e0 c\u00e1c \u0111\u1eb7c t\u00ednh c\u1ee7a m\u00e0ng giao di\u1ec7n ch\u1ea5t \u0111i\u1ec7n ph\u00e2n r\u1eafn (SEI).<\/span><\/span><\/p>\n

1) \u0110\u1ed9 d\u1eabn \u0111i\u1ec7n.<\/span><\/span><\/p>\n

\u0110\u1ed9 d\u1eabn \u0111i\u1ec7n l\u00e0 m\u1ed9t th\u00f4ng s\u1ed1 quan tr\u1ecdng \u0111\u1ec3 \u0111o hi\u1ec7u su\u1ea5t c\u1ee7a ch\u1ea5t \u0111i\u1ec7n ph\u00e2n, v\u00e0 \u0111\u1ed9 d\u1eabn \u0111i\u1ec7n cao h\u01a1n l\u00e0 \u0111i\u1ec1u ki\u1ec7n c\u1ea7n thi\u1ebft \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c hi\u1ec7u su\u1ea5t nhi\u1ec7t \u0111\u1ed9 th\u1ea5p t\u1ed1t c\u1ee7a pin lithium-ion. Theo quan \u0111i\u1ec3m c\u1ee7a dung m\u00f4i h\u1eefu c\u01a1, c\u00e1c y\u1ebfu t\u1ed1 ch\u00ednh \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn \u0111\u1ed9 d\u1eabn \u0111i\u1ec7n l\u00e0 h\u1eb1ng s\u1ed1 \u0111i\u1ec7n m\u00f4i v\u00e0 \u0111\u1ed9 nh\u1edbt c\u1ee7a dung m\u00f4i. H\u1eb1ng s\u1ed1 \u0111i\u1ec7n m\u00f4i c\u1ee7a dung m\u00f4i c\u00e0ng l\u1edbn th\u00ec l\u1ef1c t\u0129nh \u0111i\u1ec7n gi\u1eefa c\u00e1c ion lithium v\u00e0 anion c\u00e0ng y\u1ebfu v\u00e0 mu\u1ed1i lithium c\u00e0ng d\u1ec5 ph\u00e2n h\u1ee7y v\u00e0 t\u0103ng s\u1ed1 l\u01b0\u1ee3ng ion t\u1ef1 do.<\/span><\/span><\/p>\n

\u0110\u1ed9 nh\u1edbt c\u1ee7a dung m\u00f4i ch\u1ee7 y\u1ebfu \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn t\u00ednh di \u0111\u1ed9ng c\u1ee7a c\u00e1c ion t\u1ef1 do. \u0110\u1ed9 nh\u1edbt c\u00e0ng cao, t\u00ednh di \u0111\u1ed9ng c\u00e0ng nh\u1ecf v\u00e0 \u0111\u1ed9 d\u1eabn \u0111i\u1ec7n c\u00e0ng th\u1ea5p. Ng\u01b0\u1ee3c l\u1ea1i, \u0111i\u1ec1u ng\u01b0\u1ee3c l\u1ea1i m\u1edbi \u0111\u00fang. Khi nhi\u1ec7t \u0111\u1ed9 gi\u1ea3m, h\u1eb1ng s\u1ed1 \u0111i\u1ec7n m\u00f4i c\u1ee7a dung m\u00f4i s\u1ebd l\u00e0m gi\u1ea3m l\u1ef1c t\u01b0\u01a1ng t\u00e1c gi\u1eefa c\u00e1c ion lithium v\u00e0 anion, v\u00e0 \u0111\u1ed9 kh\u00f3 ph\u00e2n h\u1ee7y mu\u1ed1i lithium s\u1ebd t\u0103ng l\u00ean. Khi nhi\u1ec7t \u0111\u1ed9 gi\u1ea3m, \u0111\u1ed9 nh\u1edbt c\u1ee7a ch\u1ea5t \u0111i\u1ec7n ph\u00e2n t\u0103ng l\u00ean v\u00e0 t\u1ed1c \u0111\u1ed9 di chuy\u1ec3n c\u1ee7a c\u00e1c ion gi\u1ea3m. Nh\u1eefng \u0111i\u1ec1u n\u00e0y s\u1ebd l\u00e0m gi\u1ea3m \u0111\u1ed9 d\u1eabn \u0111i\u1ec7n c\u1ee7a pin v\u00e0 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn dung l\u01b0\u1ee3ng c\u1ee7a pin \u0111i\u1ec7n lithium-ion.<\/span><\/span><\/p>\n

2) S\u00c1U m\u00e0ng.<\/span><\/span><\/p>\n

Th\u00e0nh ph\u1ea7n c\u1ee7a ch\u1ea5t \u0111i\u1ec7n ph\u00e2n kh\u00f4ng ch\u1ec9 quy\u1ebft \u0111\u1ecbnh \u0111\u1ed9 d\u1eabn ion c\u1ee7a ch\u1ea5t \u0111i\u1ec7n ph\u00e2n m\u00e0 c\u00f2n \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn qu\u00e1 tr\u00ecnh h\u00ecnh th\u00e0nh m\u00e0ng SEI (pha ch\u1ea5t \u0111i\u1ec7n ph\u00e2n r\u1eafn). Hi\u1ec7u su\u1ea5t c\u1ee7a m\u00e0ng SEI c\u00f3 t\u00e1c \u0111\u1ed9ng \u0111\u00e1ng k\u1ec3 \u0111\u1ebfn dung l\u01b0\u1ee3ng kh\u00f4ng th\u1ec3 \u0111\u1ea3o ng\u01b0\u1ee3c, hi\u1ec7u su\u1ea5t nhi\u1ec7t \u0111\u1ed9 th\u1ea5p, hi\u1ec7u su\u1ea5t chu k\u1ef3 v\u00e0 hi\u1ec7u su\u1ea5t an to\u00e0n c\u1ee7a pin. M\u1ed9t m\u00e0ng SEI tuy\u1ec7t v\u1eddi ph\u1ea3i c\u00f3 kh\u1ea3 n\u0103ng kh\u00f4ng h\u00f2a tan trong dung m\u00f4i h\u1eefu c\u01a1 cho ph\u00e9p c\u00e1c ion lithium t\u1ef1 do nh\u00fang ho\u1eb7c t\u00e1ch kh\u1ecfi \u0111i\u1ec7n c\u1ef1c, trong khi c\u00e1c ph\u00e2n t\u1eed dung m\u00f4i kh\u00f4ng th\u1ec3 x\u00e2m nh\u1eadp, do \u0111\u00f3 ng\u0103n c\u00e1c ph\u00e2n t\u1eed dung m\u00f4i l\u00e0m h\u1ecfng \u0111i\u1ec7n c\u1ef1c v\u00e0 c\u1ea3i thi\u1ec7n tu\u1ed5i th\u1ecd chu k\u1ef3 c\u1ee7a n\u00f3.<\/span><\/span><\/p>\n

Nghi\u00ean c\u1ee9u \u0111\u00e3 ph\u00e1t hi\u1ec7n ra r\u1eb1ng \u0111i\u1ec7n tr\u1edf m\u00e0ng SEI l\u1edbn h\u01a1n nhi\u1ec1u so v\u1edbi \u0111i\u1ec7n tr\u1edf ch\u1ea5t \u0111i\u1ec7n ph\u00e2n v\u00e0 khi nhi\u1ec7t \u0111\u1ed9 gi\u1ea3m, \u0111i\u1ec7n tr\u1edf m\u00e0ng SEI t\u0103ng l\u00ean, t\u01b0\u01a1ng \u1ee9ng v\u1edbi s\u1ef1 suy gi\u1ea3m nhanh ch\u00f3ng c\u1ee7a hi\u1ec7u su\u1ea5t pin. C\u00f3 th\u1ec3 th\u00eam m\u1ed9t l\u01b0\u1ee3ng ph\u1ee5 gia t\u1ea1o m\u00e0ng th\u00edch h\u1ee3p v\u00e0o ch\u1ea5t \u0111i\u1ec7n ph\u00e2n c\u1ee7a pin lithium-ion \u0111\u1ec3 gi\u1ea3m \u0111i\u1ec7n tr\u1edf m\u00e0ng SEI, c\u1ea3i thi\u1ec7n hi\u1ec7u su\u1ea5t c\u1ee7a m\u00e0ng SEI v\u00e0 do \u0111\u00f3 c\u1ea3i thi\u1ec7n hi\u1ec7u su\u1ea5t nhi\u1ec7t \u0111\u1ed9 th\u1ea5p c\u1ee7a pin.<\/span><\/span><\/p>\n

2.2 \u1ea2nh h\u01b0\u1edfng c\u1ee7a k\u00edch th\u01b0\u1edbc h\u1ea1t c\u1ee7a v\u1eadt li\u1ec7u \u0111i\u1ec7n c\u1ef1c<\/span><\/span><\/strong><\/span><\/h2>\n

Trong \u0111i\u1ec1u ki\u1ec7n nhi\u1ec7t \u0111\u1ed9 th\u1ea5p, \u0111i\u1ec7n \u00e1p x\u1ea3 c\u1ee7a pin gi\u1ea3m cho th\u1ea5y s\u1ef1 gia t\u0103ng \u0111\u1ed9 ph\u00e2n c\u1ef1c c\u1ee7a c\u00e1c l\u1edbp b\u00ean trong v\u00e0 b\u00ean ngo\u00e0i c\u1ee7a c\u00e1c h\u1ea1t \u0111i\u1ec7n c\u1ef1c d\u01b0\u01a1ng v\u00e0 \u00e2m, t\u1ee9c l\u00e0 s\u1ef1 gia t\u0103ng tr\u1edf kh\u00e1ng truy\u1ec1n c\u1ee7a c\u00e1c h\u1ea1t r\u1eafn \u0111i\u1ec7n c\u1ef1c d\u01b0\u01a1ng v\u00e0 \u00e2m c\u1ee7a ion lithium, d\u1eabn \u0111\u1ebfn \u0111i\u1ec7n \u00e1p k\u1ebft th\u00fac x\u1ea3 \u0111\u1ea1t s\u1edbm trong qu\u00e1 tr\u00ecnh x\u1ea3 v\u00e0 l\u00e0m gi\u1ea3m dung l\u01b0\u1ee3ng x\u1ea3 t\u01b0\u01a1ng \u1ee9ng.<\/span><\/span><\/p>\n

Nghi\u00ean c\u1ee9u \u0111\u00e3 ph\u00e1t hi\u1ec7n ra r\u1eb1ng trong \u0111i\u1ec1u ki\u1ec7n nhi\u1ec7t \u0111\u1ed9 th\u1ea5p, \u0111i\u1ec7n c\u1ef1c than ch\u00ec \u0111\u01b0\u1ee3c s\u1ea1c \u0111\u1ea7y c\u00f3 th\u1ec3 gi\u1ea3i ph\u00f3ng t\u01b0\u01a1ng \u0111\u1ed1i d\u1ec5 d\u00e0ng c\u00e1c ion lithium nh\u00fang d\u01b0\u1edbi -20 \u2103. Tuy nhi\u00ean, \u1edf c\u00f9ng nhi\u1ec7t \u0111\u1ed9, vi\u1ec7c nh\u00fang c\u00e1c ion lithium v\u00e0o \u0111i\u1ec7n c\u1ef1c than ch\u00ec \u0111\u00e3 x\u1ea3 ho\u00e0n to\u00e0n g\u1eb7p ph\u1ea3i nh\u1eefng tr\u1edf ng\u1ea1i nghi\u00eam tr\u1ecdng. B\u1eb1ng c\u00e1ch gi\u1ea3m k\u00edch th\u01b0\u1edbc h\u1ea1t c\u1ee7a v\u1eadt li\u1ec7u \u0111i\u1ec7n c\u1ef1c, hi\u1ec7u su\u1ea5t nhi\u1ec7t \u0111\u1ed9 th\u1ea5p c\u1ee7a pin s\u1ebd \u0111\u01b0\u1ee3c c\u1ea3i thi\u1ec7n \u0111\u00e1ng k\u1ec3.<\/span><\/span><\/p>\n

2.3 T\u1ed1i \u01b0u h\u00f3a v\u00e0 c\u1ea3i ti\u1ebfn v\u1eadt li\u1ec7u \u0111i\u1ec7n ph\u00e2n v\u00e0 \u0111i\u1ec7n c\u1ef1c<\/span><\/span><\/strong><\/span><\/h2>\n

Ch\u00fang t\u00f4i \u0111\u00e3 ti\u1ebfn h\u00e0nh ph\u00e2n t\u00edch v\u00e0 nghi\u00ean c\u1ee9u chuy\u00ean s\u00e2u v\u1ec1 c\u00f4ng th\u1ee9c v\u00e0 quy tr\u00ecnh c\u1ee7a ch\u1ea5t \u0111i\u1ec7n ph\u00e2n v\u00e0 v\u1eadt li\u1ec7u \u0111i\u1ec7n c\u1ef1c cho c\u00e1c s\u1ea3n ph\u1ea9m kh\u00f4ng \u0111\u1ee7 ti\u00eau chu\u1ea9n c\u00f4ng su\u1ea5t nhi\u1ec7t \u0111\u1ed9 th\u1ea5p 70Ah n\u00eau tr\u00ean. Ch\u1ea5t \u0111i\u1ec7n ph\u00e2n s\u1ea3n ph\u1ea9m \u0111\u01b0\u1ee3c \u0111i\u1ec1u ch\u1ec9nh t\u1eeb dung m\u00f4i \u0111i\u1ec7n ph\u00e2n ba th\u00e0nh ph\u1ea7n g\u1ed3m EC, DMC v\u00e0 DEC th\u00e0nh dung m\u00f4i \u0111i\u1ec7n ph\u00e2n b\u1ed1n th\u00e0nh ph\u1ea7n g\u1ed3m EC, PC, DMC v\u00e0 DEC.<\/span><\/span><\/p>\n

C\u00e1c lo\u1ea1i mu\u1ed1i lithium v\u00e0 ph\u1ee5 gia v\u1eabn gi\u1eef nguy\u00ean, nh\u01b0ng t\u1ef7 l\u1ec7 \u0111\u00e3 \u0111\u01b0\u1ee3c \u0111i\u1ec1u ch\u1ec9nh \u0111\u1ec3 c\u1ea3i thi\u1ec7n quy tr\u00ecnh s\u1ea3n xu\u1ea5t v\u1eadt li\u1ec7u \u0111i\u1ec7n c\u1ef1c. Ch\u1ea5t \u0111i\u1ec7n ph\u00e2n \u0111\u00e3 tr\u1ea3i qua h\u00e0ng ch\u1ee5c l\u1ea7n \u0111i\u1ec1u ch\u1ec9nh t\u1ef7 l\u1ec7 v\u00e0 th\u1eed nghi\u1ec7m \u0111\u1ec3 l\u00e0m cho c\u00e1c h\u1ea1t v\u1eadt li\u1ec7u \u0111i\u1ec7n c\u1ef1c nh\u1ecf h\u01a1n.<\/span><\/span><\/p>\n

Pin c\u1ea3i ti\u1ebfn c\u00f3 \u0111i\u1ec7n \u00e1p kh\u1edfi \u0111\u1ed9ng x\u1ea3 l\u00e0 3.293V v\u00e0 \u0111i\u1ec7n \u00e1p ng\u1eaft x\u1ea3 l\u00e0 2.0V \u1edf 20\u2103. Dung l\u01b0\u1ee3ng x\u1ea3 74.6Ah l\u00e0 106.6% dung l\u01b0\u1ee3ng \u0111\u1ecbnh m\u1ee9c, \u0111\u00e1p \u1ee9ng c\u00e1c y\u00eau c\u1ea7u ti\u00eau chu\u1ea9n. Dung l\u01b0\u1ee3ng x\u1ea3 \u1edf 20\u2103 n\u1eb1m trong kho\u1ea3ng t\u1eeb 100% \u0111\u1ebfn 110% dung l\u01b0\u1ee3ng \u0111\u1ecbnh m\u1ee9c; Trong \u0111i\u1ec1u ki\u1ec7n -20\u2103, \u0111i\u1ec7n \u00e1p kh\u1edfi \u0111\u1ed9ng x\u1ea3 l\u00e0 3.189V v\u00e0 \u0111i\u1ec7n \u00e1p ng\u1eaft x\u1ea3 l\u00e0 2.0V. Dung l\u01b0\u1ee3ng x\u1ea3 l\u00e0 56.1Ah, b\u1eb1ng 80.1% dung l\u01b0\u1ee3ng \u0111\u1ecbnh m\u1ee9c. Dung l\u01b0\u1ee3ng x\u1ea3 \u1edf -20\u2103 \u0111\u00e1p \u1ee9ng c\u00e1c y\u00eau c\u1ea7u ti\u00eau chu\u1ea9n kh\u00f4ng nh\u1ecf h\u01a1n 70% dung l\u01b0\u1ee3ng \u0111\u1ecbnh m\u1ee9c (49.0Ah)<\/span><\/span><\/p>\n

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

Trong <\/span><\/span>\u0111i\u1ec1u ki\u1ec7n nhi\u1ec7t \u0111\u1ed9 th\u1ea5p<\/span><\/span><\/a> , hi\u1ec7u su\u1ea5t x\u1ea3 c\u1ee7a pin lithium-ion gi\u1ea3m. \u0110i\u1ec7n \u00e1p x\u1ea3 gi\u1ea3m v\u00e0 dung l\u01b0\u1ee3ng x\u1ea3 gi\u1ea3m \u0111\u00e1ng k\u1ec3. Do \u0111\u1eb7c t\u00ednh nhi\u1ec7t \u0111\u1ed9 th\u1ea5p c\u1ee7a c\u00e1c lo\u1ea1i pin n\u00f3i tr\u00ean, ch\u00fang g\u00e2y ra tr\u1edf ng\u1ea1i \u0111\u00e1ng k\u1ec3 cho vi\u1ec7c ph\u1ed5 bi\u1ebfn v\u00e0 ph\u00e1t tri\u1ec3n xe \u0111i\u1ec7n \u1edf c\u00e1c khu v\u1ef1c c\u00f3 nhi\u1ec7t \u0111\u1ed9 th\u1ea5p. Do \u0111\u00f3, vi\u1ec7c c\u1ea3i thi\u1ec7n \u0111\u00e1ng k\u1ec3 hi\u1ec7u su\u1ea5t nhi\u1ec7t \u0111\u1ed9 th\u1ea5p c\u1ee7a pin c\u00f3 l\u1ee3i cho s\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a xe \u0111i\u1ec7n v\u00e0 c\u0169ng th\u00fac \u0111\u1ea9y qu\u00e1 tr\u00ecnh \u1ee9ng d\u1ee5ng pin lithium-ion trong qu\u00e2n s\u1ef1, h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5 v\u00e0 c\u00e1c l\u0129nh v\u1ef1c kh\u00e1c.<\/span><\/span><\/p>\n

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

Pin lithium ion \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong l\u0129nh v\u1ef1c xe \u0111i\u1ec7n do c\u00f3 \u0111i\u1ec7n \u00e1p cao, n\u0103ng l\u01b0\u1ee3ng ri\u00eang cao v\u00e0 hi\u1ec7u su\u1ea5t s\u1ea1c t\u1ed1t. 1 Th\u1eed nghi\u1ec7m L\u1ea5y pin lithium-ion c\u00f3 dung l\u01b0\u1ee3ng \u0111\u1ecbnh m\u1ee9c l\u00e0 70Ah cho xe \u0111i\u1ec7n l\u00e0m v\u00ed d\u1ee5, m\u1ed9t th\u1eed nghi\u1ec7m dung l\u01b0\u1ee3ng \u1edf nhi\u1ec7t \u0111\u1ed9 ph\u00f2ng<\/p>\n","protected":false},"author":1,"featured_media":19669,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[88],"tags":[],"class_list":["post-19668","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\/19668","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=19668"}],"version-history":[{"count":2,"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/posts\/19668\/revisions"}],"predecessor-version":[{"id":21965,"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/posts\/19668\/revisions\/21965"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/media\/19669"}],"wp:attachment":[{"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/media?parent=19668"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/categories?post=19668"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/tags?post=19668"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}