{"id":19591,"date":"2024-03-14T06:06:33","date_gmt":"2024-03-14T06:06:33","guid":{"rendered":"http:\/\/dgbellvietnam.com\/lithium-battery-thermal-runaway-test\/"},"modified":"2024-10-13T10:43:22","modified_gmt":"2024-10-13T03:43:22","slug":"lithium-battery-thermal-runaway-test","status":"publish","type":"post","link":"https:\/\/dgbellvietnam.com\/en\/lithium-battery-thermal-runaway-test\/","title":{"rendered":"Th\u1eed nghi\u1ec7m tho\u00e1t nhi\u1ec7t pin Lithium"},"content":{"rendered":"
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Trong c\u00e1c s\u1ea3n ph\u1ea9m pin lithium-ion th\u01b0\u01a1ng m\u1ea1i hi\u1ec7n nay, qu\u00e1 tr\u00ecnh s\u1ea1c v\u00e0 x\u1ea3 pin th\u01b0\u1eddng \u0111i k\u00e8m v\u1edbi vi\u1ec7c sinh nhi\u1ec7t. N\u1ebfu pin sinh ra qu\u00e1 nhi\u1ec1u nhi\u1ec7t trong qu\u00e1 tr\u00ecnh s\u1ea1c v\u00e0 x\u1ea3 v\u00e0 kh\u00f4ng th\u1ec3 t\u1ea3n nhi\u1ec7t k\u1ecbp th\u1eddi, hi\u1ec7u su\u1ea5t pin c\u00f3 th\u1ec3 b\u1ecb suy gi\u1ea3m \u0111\u00e1ng k\u1ec3 do nhi\u1ec7t t\u00edch t\u1ee5 trong qu\u00e1 tr\u00ecnh s\u1ea1c v\u00e0 x\u1ea3. Khi nhi\u1ec7t \u0111\u1ed9 t\u0103ng \u0111\u1ebfn m\u1ee9c b\u1ed9 t\u00e1ch b\u00ean trong pin tan ch\u1ea3y, g\u00e2y ra hi\u1ec7n t\u01b0\u1ee3ng ng\u1eafn m\u1ea1ch gi\u1eefa \u0111i\u1ec7n c\u1ef1c d\u01b0\u01a1ng v\u00e0 \u0111i\u1ec7n c\u1ef1c \u00e2m, pin c\u00f3 th\u1ec3 g\u00e2y ra nguy c\u01a1 n\u1ed5 v\u00e0 c\u00e1c m\u1ed1i nguy hi\u1ec3m kh\u00e1c. Do \u0111\u00f3, vi\u1ec7c nghi\u00ean c\u1ee9u \u0111\u1ecbnh lu\u1eadt sinh nhi\u1ec7t v\u00e0 h\u00e0nh vi m\u1ea5t ki\u1ec3m so\u00e1t nhi\u1ec7t c\u1ee7a pin trong qu\u00e1 tr\u00ecnh s\u1ea1c v\u00e0 x\u1ea3 l\u00e0 r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 ki\u1ec3m tra t\u00ednh an to\u00e0n c\u1ee7a pin.<\/span><\/p>\n

Th\u00f4ng th\u01b0\u1eddng, trong qu\u00e1 tr\u00ecnh s\u1eed d\u1ee5ng pin, nhi\u1ec7t \u0111\u1ed9 c\u1ee7a pin t\u0103ng l\u00ean \u0111\u00e1ng k\u1ec3 do trao \u0111\u1ed5i nhi\u1ec7t gi\u1eefa \u0111\u1ed1i l\u01b0u kh\u00f4ng kh\u00ed, d\u1eabn nhi\u1ec7t v\u00e0 m\u00f4i tr\u01b0\u1eddng xung quanh. Nh\u01b0ng \u0111\u1ec3 nghi\u00ean c\u1ee9u hi\u1ec7u su\u1ea5t an to\u00e0n c\u1ee7a pin, c\u1ea7n ph\u1ea3i xem x\u00e9t h\u00e0nh vi sinh nhi\u1ec7t c\u1ee7a pin trong m\u00f4i tr\u01b0\u1eddng c\u1ef1c k\u1ef3 kh\u1eafc nghi\u1ec7t – m\u00f4i tr\u01b0\u1eddng \u0111o\u1ea1n nhi\u1ec7t. Trong m\u00f4i tr\u01b0\u1eddng c\u00e1ch nhi\u1ec7t, kh\u00f4ng c\u00f3 trao \u0111\u1ed5i nhi\u1ec7t gi\u1eefa pin v\u00e0 m\u00f4i tr\u01b0\u1eddng, v\u00e0 nhi\u1ec7t sinh ra trong qu\u00e1 tr\u00ecnh s\u1ea1c v\u00e0 x\u1ea3 pin b\u1ecb gi\u1edbi h\u1ea1n ho\u00e0n to\u00e0n trong h\u1ec7 th\u1ed1ng pin, \u0111i\u1ec1u n\u00e0y c\u00f3 nhi\u1ec1u kh\u1ea3 n\u0103ng g\u00e2y ra nguy c\u01a1 an to\u00e0n cho pin.<\/span><\/p>\n

Qu\u00e1 tr\u00ecnh sinh nhi\u1ec7t trong qu\u00e1 tr\u00ecnh s\u1ea1c v\u00e0 x\u1ea3 c\u1ee7a pin lithium-ion c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c chia th\u00e0nh hai ph\u1ea7n: nhi\u1ec7t thu\u1eadn ngh\u1ecbch (Qrev) v\u00e0 nhi\u1ec7t kh\u00f4ng thu\u1eadn ngh\u1ecbch (Qirr). B\u1eb1ng c\u00e1ch \u0111o hi\u1ec7u \u1ee9ng nhi\u1ec7t c\u1ee7a pin \u1edf tr\u1ea1ng th\u00e1i \u0111o\u1ea1n nhi\u1ec7t, kh\u00f4ng ch\u1ec9 c\u00f3 th\u1ec3 hi\u1ec3u \u0111\u01b0\u1ee3c \u0111\u1ecbnh lu\u1eadt sinh nhi\u1ec7t c\u1ee7a pin trong qu\u00e1 tr\u00ecnh s\u1ea1c v\u00e0 x\u1ea3 m\u00e0 c\u00f2n c\u00f3 th\u1ec3 t\u00ednh to\u00e1n \u0111\u01b0\u1ee3c c\u00e2n b\u1eb1ng n\u0103ng l\u01b0\u1ee3ng c\u1ee7a pin trong qu\u00e1 tr\u00ecnh s\u1ea1c v\u00e0 x\u1ea3. C\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u \u0111\u00e3 s\u1eed d\u1ee5ng c\u00e1c ph\u01b0\u01a1ng ph\u00e1p kh\u00e1c nhau nh\u01b0 ph\u00e9p \u0111o nhi\u1ec7t l\u01b0\u1ee3ng v\u00e0 \u0111i\u1ec7n h\u00f3a \u0111\u1ec3 thu \u0111\u01b0\u1ee3c nhi\u1ec7t thu\u1eadn ngh\u1ecbch v\u00e0 kh\u00f4ng thu\u1eadn ngh\u1ecbch c\u1ee7a pin, \u0111\u1ed3ng th\u1eddi ph\u00e1t tri\u1ec3n m\u00f4 h\u00ecnh sinh nhi\u1ec7t v\u00e0 ph\u01b0\u01a1ng ph\u00e1p m\u00f4 ph\u1ecfng nhi\u1ec7t cho pin \u0111i\u1ec7n \u00f4 t\u00f4. Ph\u00e9p \u0111o nhi\u1ec7t l\u01b0\u1ee3ng gia t\u1ed1c l\u00e0 ph\u01b0\u01a1ng ph\u00e1p th\u1eed nghi\u1ec7m v\u00e0 ph\u00e2n t\u00edch \u0111\u1ed9 an to\u00e0n nhi\u1ec7t c\u1ee7a c\u00e1c m\u1eabu trong \u0111i\u1ec1u ki\u1ec7n g\u1ea7n nh\u01b0 \u0111o\u1ea1n nhi\u1ec7t.<\/span><\/p>\n

V\u1edbi vi\u1ec7c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i pin lithium-ion, m\u1ed9t m\u1eb7t, c\u00e1c y\u00eau c\u1ea7u v\u1ec1 tu\u1ed5i th\u1ecd v\u00e0 \u0111\u1ed9 an to\u00e0n c\u1ee7a pin \u0111ang d\u1ea7n t\u0103ng l\u00ean; M\u1eb7t kh\u00e1c, vi\u1ec7c s\u1eed d\u1ee5ng pin theo t\u1ea7ng c\u0169ng c\u1ea7n ph\u1ea3i xem x\u00e9t c\u00e1c \u0111\u1eb7c \u0111i\u1ec3m an to\u00e0n c\u1ee7a ch\u00fang. Do \u0111\u00f3, vi\u1ec7c nghi\u00ean c\u1ee9u c\u00e1c \u0111\u1eb7c \u0111i\u1ec3m an to\u00e0n c\u1ee7a pin v\u00f2ng \u0111\u1eddi, l\u00e0m r\u00f5 c\u00e1c \u0111i\u1ec1u ki\u1ec7n ranh gi\u1edbi an to\u00e0n v\u00e0 m\u1ed1i quan h\u1ec7 hi\u1ec7u qu\u1ea3 n\u0103ng l\u01b0\u1ee3ng c\u1ee7a pin trong to\u00e0n b\u1ed9 v\u00f2ng \u0111\u1eddi c\u1ee7a ch\u00fang l\u00e0 r\u1ea5t c\u1ea5p thi\u1ebft. Cho \u0111\u1ebfn nay, \u0111\u00e3 c\u00f3 nhi\u1ec1u nghi\u00ean c\u1ee9u v\u1ec1 c\u00e1c \u0111\u1eb7c \u0111i\u1ec3m nhi\u1ec7t c\u1ee7a c\u00e1c cell pin m\u1edbi, nh\u01b0ng c\u00f3 r\u1ea5t \u00edt nghi\u00ean c\u1ee9u v\u1ec1 t\u00e1c \u0111\u1ed9ng c\u1ee7a qu\u00e1 tr\u00ecnh l\u00e3o h\u00f3a \u0111\u1ed1i v\u1edbi \u0111\u1ed9 an to\u00e0n c\u1ee7a pin. Qu\u00e1 tr\u00ecnh l\u00e3o h\u00f3a n\u00f3i chung c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c chia th\u00e0nh hai lo\u1ea1i: l\u00e3o h\u00f3a theo chu k\u1ef3 v\u00e0 l\u00e3o h\u00f3a l\u01b0u tr\u1eef.<\/span><\/p>\n

C\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u \u0111\u00e3 s\u1eed d\u1ee5ng ph\u00e9p \u0111o nhi\u1ec7t l\u01b0\u1ee3ng \u0111\u1ec3 nghi\u00ean c\u1ee9u \u0111\u1eb7c \u0111i\u1ec3m l\u00e3o h\u00f3a v\u00e0 m\u1ea5t ki\u1ec3m so\u00e1t nhi\u1ec7t c\u1ee7a pin lithium-ion trong c\u00e1c quy tr\u00ecnh l\u01b0u tr\u1eef kh\u00e1c nhau. H\u1ecd ph\u00e1t hi\u1ec7n ra r\u1eb1ng c\u00e1c th\u00f4ng s\u1ed1 ch\u00ednh c\u1ee7a m\u1ea5t ki\u1ec3m so\u00e1t nhi\u1ec7t, ch\u1eb3ng h\u1ea1n nh\u01b0 nhi\u1ec7t \u0111\u1ed9 kh\u1edfi \u0111\u1ed9ng t\u1ecfa nhi\u1ec7t v\u00e0 nhi\u1ec7t \u0111\u1ed9 kh\u1edfi \u0111\u1ed9ng m\u1ea5t ki\u1ec3m so\u00e1t nhi\u1ec7t, t\u0103ng theo qu\u00e1 tr\u00ecnh l\u00e3o h\u00f3a pin, trong khi t\u1ed1c \u0111\u1ed9 m\u1ea5t ki\u1ec3m so\u00e1t nhi\u1ec7t gi\u1ea3m. C\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u c\u0169ng \u0111\u00e3 nghi\u00ean c\u1ee9u h\u00e0nh vi l\u1ea1m d\u1ee5ng nhi\u1ec7t c\u1ee7a pin lithium-ion \u0111ang ho\u1ea1t \u0111\u1ed9ng v\u00e0 b\u1ecb h\u1ecfng trong \u0111i\u1ec1u ki\u1ec7n l\u00e3o h\u00f3a theo chu k\u1ef3, l\u01b0u tr\u1eef \u1edf nhi\u1ec7t \u0111\u1ed9 cao v\u00e0 \u0111i\u1ec1u ki\u1ec7n l\u00e3o h\u00f3a l\u01b0u tr\u1eef \u1edf nhi\u1ec7t \u0111\u1ed9 ph\u00f2ng, \u0111\u1ed3ng th\u1eddi ph\u00e1t hi\u1ec7n ra qu\u00e1 tr\u00ecnh n\u1ed5 kh\u00ed v\u00e0 kh\u00ed \u0111\u1ed9c th\u1ea3i ra sau khi l\u1ea1m d\u1ee5ng.<\/span><\/p>\n

B\u00e0i vi\u1ebft n\u00e0y l\u1ea5y pin lithium coban oxit l\u00e0m \u0111\u1ed1i t\u01b0\u1ee3ng nghi\u00ean c\u1ee9u, s\u1eed d\u1ee5ng nhi\u1ec7t l\u01b0\u1ee3ng k\u1ebf t\u1ed1c \u0111\u1ed9 t\u0103ng t\u1ed1c (ARC) \u0111\u1ec3 cung c\u1ea5p m\u00f4i tr\u01b0\u1eddng \u0111o\u1ea1n nhi\u1ec7t, ki\u1ec3m tra nhi\u1ec7t dung ri\u00eang, sinh nhi\u1ec7t v\u00e0 s\u1ef1 m\u1ea5t ki\u1ec3m so\u00e1t nhi\u1ec7t c\u1ee7a pin v\u00e0 nghi\u00ean c\u1ee9u c\u00e1c \u0111\u1eb7c t\u00ednh nhi\u1ec7t. Nghi\u00ean c\u1ee9u c\u00e1c qu\u00e1 tr\u00ecnh s\u1ea1c v\u00e0 x\u1ea3 v\u00e0 c\u00e1c qu\u00e1 tr\u00ecnh m\u1ea5t ki\u1ec3m so\u00e1t nhi\u1ec7t c\u1ee7a pin trong m\u00f4i tr\u01b0\u1eddng \u0111o\u1ea1n nhi\u1ec7t theo c\u00e1c chu k\u1ef3 l\u00e3o h\u00f3a theo chu k\u1ef3 kh\u00e1c nhau v\u00e0 nghi\u00ean c\u1ee9u \u1ea3nh h\u01b0\u1edfng c\u1ee7a qu\u00e1 tr\u00ecnh l\u00e3o h\u00f3a theo chu k\u1ef3 \u0111\u1ebfn c\u00e1c \u0111\u1eb7c t\u00ednh nhi\u1ec7t c\u1ee7a pin.<\/span><\/p>\n

1 Ki\u1ec3m tra<\/span><\/strong><\/span><\/h1>\n

Pin s\u1eed d\u1ee5ng pin g\u00f3i m\u1ec1m v\u1edbi lithium coban oxit (LCO) l\u00e0m \u0111i\u1ec7n c\u1ef1c d\u01b0\u01a1ng v\u00e0 c\u00e1c vi c\u1ea7u carbon mesophase (CMS) l\u00e0m \u0111i\u1ec7n c\u1ef1c \u00e2m, c\u00f3 dung l\u01b0\u1ee3ng 6,1 Ah v\u00e0 \u0111i\u1ec7n \u00e1p l\u00e0m vi\u1ec7c 3,6 V<\/span><\/p>\n

1.1 Ki\u1ec3m tra hi\u1ec7u su\u1ea5t \u0111i\u1ec7n h\u00f3a<\/span><\/span><\/h2>\n

Ki\u1ec3m tra n\u0103ng l\u1ef1c<\/span><\/p>\n

Nhi\u1ec7t \u0111\u1ed9 th\u1eed nghi\u1ec7m l\u00e0 (25 \u00b1 5) \u2103, v\u00e0 s\u1eed d\u1ee5ng h\u1ec7 th\u1ed1ng th\u1eed nghi\u1ec7m s\u1ea1c v\u00e0 x\u1ea3 \u0111\u1ec3 th\u1eed nghi\u1ec7m. Pin \u0111\u01b0\u1ee3c s\u1ea1c \u0111\u1ebfn 4,2 V \u1edf d\u00f2ng \u0111i\u1ec7n 0,1 C, sau \u0111\u00f3 chuy\u1ec3n sang s\u1ea1c \u0111i\u1ec7n \u00e1p kh\u00f4ng \u0111\u1ed5i v\u1edbi d\u00f2ng \u0111i\u1ec7n \u0111\u1ea7y \u0111\u1ee7 nh\u1ecf h\u01a1n ho\u1eb7c b\u1eb1ng 0,01 C v\u00e0 \u0111\u1ec3 y\u00ean trong 10 ph\u00fat; X\u1ea3 pin \u1edf d\u00f2ng \u0111i\u1ec7n kh\u00f4ng \u0111\u1ed5i t\u1eeb 0,1 C \u0111\u1ebfn 2,75 V v\u00e0 l\u1eb7p l\u1ea1i chu k\u1ef3 s\u1ea1c v\u00e0 x\u1ea3 ba l\u1ea7n \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c dung l\u01b0\u1ee3ng x\u1ea3 l\u00e0 6,1 Ah.<\/span><\/p>\n

Ki\u1ec3m tra v\u00f2ng l\u1eb7p<\/span><\/p>\n

\u1ede nhi\u1ec7t \u0111\u1ed9 m\u00f4i tr\u01b0\u1eddng (25 \u00b1 5) \u2103, s\u1ea1c pin \u1edf d\u00f2ng \u0111i\u1ec7n t\u1eeb 0,5 C \u0111\u1ebfn 4,1 V, sau \u0111\u00f3 chuy\u1ec3n sang \u0111i\u1ec7n \u00e1p kh\u00f4ng \u0111\u1ed5i cho \u0111\u1ebfn khi d\u00f2ng \u0111i\u1ec7n nh\u1ecf h\u01a1n ho\u1eb7c b\u1eb1ng 0,01 C, \u0111\u1ec3 y\u00ean trong 10 ph\u00fat, sau \u0111\u00f3 x\u1ea3 pin \u1edf d\u00f2ng \u0111i\u1ec7n kh\u00f4ng \u0111\u1ed5i t\u1eeb 1 C \u0111\u1ebfn 2,75 V. Th\u1ef1c hi\u1ec7n tu\u1ea7n ho\u00e0n trong 500, 1000 v\u00e0 1500 chu k\u1ef3 theo h\u1ec7 th\u1ed1ng n\u00e0y.<\/span><\/p>\n

Ki\u1ec3m tra \u0111i\u1ec7n tr\u1edf b\u00ean trong DC<\/span><\/p>\n

\u1ede nhi\u1ec7t \u0111\u1ed9 m\u00f4i tr\u01b0\u1eddng (25 \u00b1 5) \u2103, x\u1ea3 pin \u1edf d\u00f2ng \u0111i\u1ec7n kh\u00f4ng \u0111\u1ed5i 0,5 C v\u00e0 ti\u1ebfn h\u00e0nh th\u1eed nghi\u1ec7m \u0111i\u1ec7n tr\u1edf b\u00ean trong DC li\u00ean t\u1ee5c sau m\u1ed7i 12 ph\u00fat x\u1ea3 (DOD 10%). S\u1eed d\u1ee5ng d\u00f2ng \u0111i\u1ec7n 1,5 C cho l\u1ea7n x\u1ea3 xung 10 gi\u00e2y, c\u00e1c gi\u00e1 tr\u1ecb \u0111i\u1ec7n \u00e1p tr\u01b0\u1edbc v\u00e0 t\u1ea1i gi\u00e2y th\u1ee9 5 c\u1ee7a l\u1ea7n x\u1ea3 xung \u0111\u01b0\u1ee3c l\u1ea5y \u0111\u1ec3 t\u00ednh \u0111i\u1ec7n tr\u1edf b\u00ean trong DC R c\u1ee7a pin \u1edf c\u00e1c tr\u1ea1ng th\u00e1i s\u1ea1c kh\u00e1c nhau.<\/span><\/p>\n

1.2 Ki\u1ec3m tra \u0111\u1eb7c t\u00ednh nhi\u1ec7t c\u1ee7a pin<\/span><\/span><\/h2>\n

Ki\u1ec3m tra nhi\u1ec7t dung ri\u00eang<\/span><\/p>\n

Ti\u1ebfn h\u00e0nh th\u1eed nghi\u1ec7m nhi\u1ec7t dung ri\u00eang c\u1ee7a pin trong m\u1ed9t nhi\u1ec7t l\u01b0\u1ee3ng k\u1ebf gia t\u1ed1c. Pin lu\u00f4n \u1edf trong m\u00f4i tr\u01b0\u1eddng \u0111o\u1ea1n nhi\u1ec7t, \u0111\u01b0\u1ee3c l\u00e0m n\u00f3ng b\u1eb1ng m\u1ed9t b\u1ed9 ph\u1eadn gia nhi\u1ec7t c\u00f4ng su\u1ea5t kh\u00f4ng \u0111\u1ed5i v\u00e0 \u0111\u01b0\u1eddng cong nhi\u1ec7t \u0111\u1ed9 c\u1ee7a pin theo th\u1eddi gian \u0111\u01b0\u1ee3c ghi l\u1ea1i. T\u1ed1c \u0111\u1ed9 t\u0103ng nhi\u1ec7t \u0111\u1ed9 c\u1ee7a pin \u1edf tr\u1ea1ng th\u00e1i \u0111o\u1ea1n nhi\u1ec7t \u0111\u01b0\u1ee3c thu \u0111\u01b0\u1ee3c b\u1eb1ng c\u00e1ch kh\u1edbp tuy\u1ebfn t\u00ednh \u0111\u01b0\u1eddng cong. \u0110\u1ec3 \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 ch\u00ednh x\u00e1c c\u1ee7a ph\u00e9p \u0111o, h\u00e3y l\u1ea5y hai m\u1eabu pin v\u00e0 l\u1ea5y gi\u00e1 tr\u1ecb trung b\u00ecnh c\u1ee7a hai ph\u00e9p th\u1eed.<\/span><\/p>\n

Ki\u1ec3m tra sinh nhi\u1ec7t<\/span><\/p>\n

\u0110\u1eb7t pin m\u1edbi ho\u1eb7c pin \u0111\u00e3 qua s\u1eed d\u1ee5ng v\u00e0o nhi\u1ec7t l\u01b0\u1ee3ng k\u1ebf gia t\u1ed1c, c\u00e2n b\u1eb1ng nhi\u1ec7t \u0111\u1ed9 gi\u1eefa pin v\u00e0 bu\u1ed3ng \u0111o\u1ea1n nhi\u1ec7t, v\u00e0 kh\u1edfi \u0111\u1ed9ng h\u1ec7 th\u1ed1ng s\u1ea1c v\u00e0 x\u1ea3. S\u1ea1c v\u00e0 x\u1ea3 \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n trong m\u00f4i tr\u01b0\u1eddng \u0111o\u1ea1n nhi\u1ec7t \u1edf c\u00e1c d\u00f2ng \u0111i\u1ec7n ho\u1ea1t \u0111\u1ed9ng kh\u00e1c nhau, v\u00e0 nhi\u1ec7t \u0111\u1ed9 b\u1ec1 m\u1eb7t c\u1ee7a pin v\u00e0 \u0111\u01b0\u1eddng cong \u0111i\u1ec7n \u00e1p pin theo th\u1eddi gian trong qu\u00e1 tr\u00ecnh s\u1ea1c v\u00e0 x\u1ea3 \u0111\u01b0\u1ee3c thu th\u1eadp<\/span><\/p>\n

Ki\u1ec3m tra nhi\u1ec7t \u0111\u1ed9 tho\u00e1t ra<\/span><\/a><\/p>\n

Ti\u1ebfn h\u00e0nh th\u1eed nghi\u1ec7m ch\u1ea1y tr\u1ed1n nhi\u1ec7t tr\u00ean pin \u1edf 100% SOC trong m\u1ed9t nhi\u1ec7t l\u01b0\u1ee3ng k\u1ebf gia t\u1ed1c, ch\u1ea1y ch\u1ebf \u0111\u1ed9 HWS \u1edf tr\u1ea1ng th\u00e1i \u0111o\u1ea1n nhi\u1ec7t \u0111\u1ec3 l\u00e0m n\u00f3ng pin v\u00e0 \u0111\u1ed3ng th\u1eddi ph\u00e1t hi\u1ec7n t\u1ed1c \u0111\u1ed9 t\u1ef1 l\u00e0m n\u00f3ng c\u1ee7a pin. Khi t\u1ed1c \u0111\u1ed9 t\u1ef1 l\u00e0m n\u00f3ng c\u1ee7a pin \u2265 0,02 \u2103\/ph\u00fat, th\u00ec \u0111\u01b0\u1ee3c coi l\u00e0 \u0111\u00e3 x\u1ea3y ra ph\u1ea3n \u1ee9ng t\u1ef1 l\u00e0m n\u00f3ng b\u00ean trong pin. Thi\u1ebft b\u1ecb d\u1eebng l\u00e0m n\u00f3ng ch\u1ee7 \u0111\u1ed9ng v\u00e0 chuy\u1ec3n sang ch\u1ebf \u0111\u1ed9 \u0111o\u1ea1n nhi\u1ec7t, theo nhi\u1ec7t \u0111\u1ed9 t\u0103ng c\u1ee7a pin cho \u0111\u1ebfn khi x\u1ea3y ra ch\u1ea1y tr\u1ed1n nhi\u1ec7t. \u0110\u1ed3ng th\u1eddi thu th\u1eadp nhi\u1ec7t \u0111\u1ed9 b\u1ec1 m\u1eb7t c\u1ee7a pin v\u00e0 \u0111\u01b0\u1eddng cong bi\u1ebfn thi\u00ean c\u1ee7a \u0111i\u1ec7n \u00e1p pin theo th\u1eddi gian trong qu\u00e1 tr\u00ecnh ch\u1ea1y tr\u1ed1n nhi\u1ec7t.<\/span><\/p>\n

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

Qu\u00e1 tr\u00ecnh sinh nhi\u1ec7t v\u00e0 h\u00e0nh vi m\u1ea5t ki\u1ec3m so\u00e1t nhi\u1ec7t trong qu\u00e1 tr\u00ecnh s\u1ea1c v\u00e0 x\u1ea3 c\u1ee7a pin LCO \/ CMS \u0111\u00e3 \u0111\u01b0\u1ee3c nghi\u00ean c\u1ee9u b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng nhi\u1ec7t l\u01b0\u1ee3ng k\u1ebf gia t\u1ed1c \u0111o\u1ea1n nhi\u1ec7t. Ch\u00fang t\u00f4i \u0111\u00e3 nghi\u00ean c\u1ee9u h\u00e0nh vi sinh nhi\u1ec7t c\u1ee7a pin \u1edf c\u00e1c t\u1ed1c \u0111\u1ed9 s\u1ea1c v\u00e0 x\u1ea3 kh\u00e1c nhau v\u00e0 ph\u00e2n t\u00edch t\u00e1c \u0111\u1ed9ng c\u1ee7a d\u00f2ng \u0111i\u1ec7n l\u00e0m vi\u1ec7c v\u00e0 l\u00e3o h\u00f3a theo chu k\u1ef3 l\u00ean c\u00e1c \u0111\u1eb7c t\u00ednh sinh nhi\u1ec7t c\u1ee7a pin. V\u1edbi qu\u00e1 tr\u00ecnh l\u00e3o h\u00f3a theo chu k\u1ef3 c\u1ee7a pin, \u0111i\u1ec7n tr\u1edf trong v\u00e0 m\u1ea5t dung l\u01b0\u1ee3ng c\u1ee7a pin t\u0103ng l\u00ean, v\u00e0 t\u1ed1c \u0111\u1ed9 sinh nhi\u1ec7t s\u1ea1c v\u00e0 x\u1ea3 trung b\u00ecnh v\u00e0 t\u1ed5ng nhi\u1ec7t sinh ra c\u1ee7a pin \u0111\u1ec1u t\u0103ng.<\/span><\/p>\n

So s\u00e1nh h\u00e0nh vi m\u1ea5t ki\u1ec3m so\u00e1t nhi\u1ec7t c\u1ee7a pin tr\u01b0\u1edbc v\u00e0 sau khi tu\u1ea7n ho\u00e0n, ng\u01b0\u1eddi ta th\u1ea5y r\u1eb1ng nhi\u1ec7t \u0111\u1ed9 b\u1eaft \u0111\u1ea7u c\u1ee7a qu\u00e1 tr\u00ecnh t\u1ef1 l\u00e0m n\u00f3ng t\u0103ng nh\u1eb9 sau khi l\u00e3o h\u00f3a tu\u1ea7n ho\u00e0n, trong khi nhi\u1ec7t \u0111\u1ed9 b\u1eaft \u0111\u1ea7u c\u1ee7a qu\u00e1 tr\u00ecnh m\u1ea5t ki\u1ec3m so\u00e1t nhi\u1ec7t v\u1ec1 c\u01a1 b\u1ea3n v\u1eabn kh\u00f4ng \u0111\u1ed5i. Tuy nhi\u00ean, th\u1eddi gian t\u1eeb khi t\u1ef1 l\u00e0m n\u00f3ng \u0111\u1ebfn khi m\u1ea5t ki\u1ec3m so\u00e1t nhi\u1ec7t c\u1ee7a pin \u0111\u00e3 \u0111\u01b0\u1ee3c r\u00fat ng\u1eafn. \u0110\u1ed1i v\u1edbi h\u00e0nh vi m\u1ea5t ki\u1ec3m so\u00e1t nhi\u1ec7t c\u1ee7a pin, kh\u00f4ng ch\u1ec9 c\u1ea7n ch\u00fa \u00fd \u0111\u1ebfn c\u00e1c \u0111i\u1ec3m nhi\u1ec7t \u0111\u1ed9 ch\u00ednh nh\u01b0 nhi\u1ec7t \u0111\u1ed9 b\u1eaft \u0111\u1ea7u c\u1ee7a qu\u00e1 tr\u00ecnh t\u1ef1 l\u00e0m n\u00f3ng v\u00e0 nhi\u1ec7t \u0111\u1ed9 m\u1ea5t ki\u1ec3m so\u00e1t nhi\u1ec7t, m\u00e0 c\u00f2n ph\u1ea3i \u0111o ch\u00ednh x\u00e1c t\u1ed1c \u0111\u1ed9 sinh nhi\u1ec7t v\u00e0 th\u1eddi gian c\u1ee7a qu\u00e1 tr\u00ecnh m\u1ea5t ki\u1ec3m so\u00e1t nhi\u1ec7t, \u0111\u1ec3 \u0111\u00e1nh gi\u00e1 h\u00e0nh vi m\u1ea5t ki\u1ec3m so\u00e1t nhi\u1ec7t c\u1ee7a pin trong to\u00e0n b\u1ed9 v\u00f2ng \u0111\u1eddi c\u1ee7a ch\u00fang.<\/span><\/p>\n

B\u1eb1ng c\u00e1ch ph\u00e2n t\u00edch nh\u1eefng thay \u0111\u1ed5i v\u1ec1 nhi\u1ec7t l\u01b0\u1ee3ng t\u1ecfa ra v\u00e0 t\u1ed1c \u0111\u1ed9 t\u1ecfa ra trong qu\u00e1 tr\u00ecnh s\u1ea1c v\u00e0 x\u1ea3 pin theo c\u00e1c chu k\u1ef3 l\u00e3o h\u00f3a kh\u00e1c nhau, t\u00e1c \u0111\u1ed9ng c\u1ee7a s\u1ef1 thay \u0111\u1ed5i entropy v\u00e0 enthalpy l\u00ean pin \u0111\u01b0\u1ee3c ph\u00e2n t\u00edch. Nh\u1eefng thay \u0111\u1ed5i v\u1ec1 th\u00f4ng s\u1ed1 nhi\u1ec7t \u0111\u1ed9ng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng nh\u01b0 m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p th\u1eed nghi\u1ec7m kh\u00f4ng ph\u00e1 h\u1ee7y \u0111\u1ec3 ph\u1ea3n \u00e1nh m\u1ee9c \u0111\u1ed9 xu\u1ed1ng c\u1ea5p c\u1ee7a pin v\u00e0 \u0111\u00e1nh gi\u00e1 t\u00ecnh tr\u1ea1ng s\u1ee9c kh\u1ecfe c\u1ee7a pin.<\/span><\/p>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

Trong c\u00e1c s\u1ea3n ph\u1ea9m pin lithium-ion th\u01b0\u01a1ng m\u1ea1i hi\u1ec7n nay, qu\u00e1 tr\u00ecnh s\u1ea1c v\u00e0 x\u1ea3 pin th\u01b0\u1eddng \u0111i k\u00e8m v\u1edbi vi\u1ec7c sinh nhi\u1ec7t. N\u1ebfu pin sinh ra qu\u00e1 nhi\u1ec1u nhi\u1ec7t trong qu\u00e1 tr\u00ecnh s\u1ea1c v\u00e0 x\u1ea3 v\u00e0 kh\u00f4ng th\u1ec3 t\u1ea3n nhi\u1ec7t k\u1ecbp th\u1eddi, hi\u1ec7u su\u1ea5t pin c\u00f3 th\u1ec3 b\u1ecb suy gi\u1ea3m \u0111\u00e1ng k\u1ec3 do nhi\u1ec7t<\/p>\n","protected":false},"author":1,"featured_media":19592,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[88],"tags":[],"class_list":["post-19591","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\/19591","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=19591"}],"version-history":[{"count":2,"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/posts\/19591\/revisions"}],"predecessor-version":[{"id":21911,"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/posts\/19591\/revisions\/21911"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/media\/19592"}],"wp:attachment":[{"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/media?parent=19591"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/categories?post=19591"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/tags?post=19591"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}