{"id":19908,"date":"2021-12-30T09:22:51","date_gmt":"2021-12-30T09:22:51","guid":{"rendered":"http:\/\/dgbellvietnam.com\/internal-short-circuit-test-of-lithium-ion-battery\/"},"modified":"2024-10-25T15:39:59","modified_gmt":"2024-10-25T08:39:59","slug":"internal-short-circuit-test-of-lithium-ion-battery","status":"publish","type":"post","link":"https:\/\/dgbellvietnam.com\/en\/internal-short-circuit-test-of-lithium-ion-battery\/","title":{"rendered":"Th\u1eed nghi\u1ec7m ng\u1eafn m\u1ea1ch trong pin Lithium ion"},"content":{"rendered":"
\n

Pin lithium-ion \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong nhi\u1ec1u l\u0129nh v\u1ef1c nh\u01b0 thi\u1ebft b\u1ecb di \u0111\u1ed9ng, l\u01b0u tr\u1eef n\u0103ng l\u01b0\u1ee3ng v\u00e0 xe n\u0103ng l\u01b0\u1ee3ng m\u1edbi v\u1edbi \u01b0u \u0111i\u1ec3m l\u00e0 tu\u1ed5i th\u1ecd chu k\u1ef3 cao h\u01a1n n\u0103ng l\u01b0\u1ee3ng, nh\u01b0ng so v\u1edbi c\u00e1c lo\u1ea1i pin kh\u00e1c, v\u1ea5n \u0111\u1ec1 ch\u00ednh c\u1ea7n gi\u1ea3i quy\u1ebft l\u00e0 t\u00ednh an to\u00e0n c\u1ee7a ch\u00fang. Pin lithium-ion g\u00e2y ra c\u00e1c v\u1ea5n \u0111\u1ec1 v\u1ec1 an to\u00e0n ch\u1ee7 y\u1ebfu th\u00f4ng qua qu\u00e1 tr\u00ecnh sinh nhi\u1ec7t v\u00e0 cu\u1ed1i c\u00f9ng l\u00e0 c\u00e1ch th\u1ec3 hi\u1ec7n s\u1ef1 m\u1ea5t ki\u1ec3m so\u00e1t nhi\u1ec7t v\u00e0 l\u00fd do h\u00ecnh th\u00e0nh s\u1ef1 m\u1ea5t ki\u1ec3m so\u00e1t nhi\u1ec7t ch\u1ee7 y\u1ebfu l\u00e0 do \u0111o\u1ea3n m\u1ea1ch, l\u1ed7i k\u1ebft n\u1ed1i, nung \u1edf nhi\u1ec7t \u0111\u1ed9 cao, ng\u00e2m trong n\u01b0\u1edbc, v.v., trong \u0111\u00f3 \u0111o\u1ea3n m\u1ea1ch l\u00e0 nguy\u00ean nh\u00e2n ph\u1ed5 bi\u1ebfn nh\u1ea5t g\u00e2y ra s\u1ef1 m\u1ea5t ki\u1ec3m so\u00e1t nhi\u1ec7t \u0110o\u1ea3n m\u1ea1ch \u0111\u01b0\u1ee3c chia th\u00e0nh \u0111o\u1ea3n m\u1ea1ch ngo\u00e0i v\u00e0 \u0111o\u1ea3n m\u1ea1ch trong, \u0111o\u1ea3n m\u1ea1ch ngo\u00e0i c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t th\u00f4ng qua vi\u1ec7c b\u1ea3o v\u1ec7 c\u00e1c th\u00e0nh ph\u1ea7n ph\u1ee5 tr\u1ee3 v\u00e0 t\u1ed1i \u01b0u h\u00f3a chi\u1ebfn l\u01b0\u1ee3c trong khi \u0111o\u1ea3n m\u1ea1ch trong kh\u00f3 ki\u1ec3m so\u00e1t hi\u1ec7u qu\u1ea3. Trong b\u00e0i b\u00e1o n\u00e0y, nghi\u00ean c\u1ee9u c\u00f3 h\u1ec7 th\u1ed1ng v\u1ec1 ph\u01b0\u01a1ng ph\u00e1p m\u00f4 ph\u1ecfng nguy\u00ean l\u00fd \u0111o\u1ea3n m\u1ea1ch trong v\u00e0 c\u00e1c bi\u1ec7n ph\u00e1p ph\u00e1t hi\u1ec7n ph\u00f2ng ng\u1eeba s\u1ebd hi\u1ec3u s\u00e2u h\u01a1n v\u1ec1 ph\u01b0\u01a1ng ph\u00e1p ki\u1ec3m so\u00e1t c\u00e1c v\u1ea5n \u0111\u1ec1 v\u1ec1 an to\u00e0n c\u1ee7a pin v\u00e0 cung c\u1ea5p t\u00e0i li\u1ec7u tham kh\u1ea3o cho \u1ee9ng d\u1ee5ng r\u1ed9ng r\u00e3i h\u01a1n c\u1ee7a pin lithium-ion.<\/span><\/span><\/p>\n

Ph\u01b0\u01a1ng ph\u00e1p th\u1eed nghi\u1ec7m m\u00f4 ph\u1ecfng ng\u1eafn m\u1ea1ch<\/span><\/span><\/span><\/h1>\n

Th\u1eed nghi\u1ec7m \u0111\u00e2m \u0111inh<\/span><\/span><\/a> , <\/span><\/span>\u0111\u00f9n<\/span><\/span><\/a> , <\/span><\/span>r\u01a1i<\/span><\/span><\/a> , <\/span><\/span>va \u0111\u1eadp m\u1ea1nh<\/span><\/span><\/a> v\u00e0 c\u00e1c th\u1eed nghi\u1ec7m kh\u00e1c l\u00e0 c\u00e1c ph\u01b0\u01a1ng ph\u00e1p th\u1eed nghi\u1ec7m ng\u1eafn m\u1ea1ch m\u00f4 ph\u1ecfng ph\u1ed5 bi\u1ebfn h\u01a1n trong ti\u00eau chu\u1ea9n, ch\u1eb3ng h\u1ea1n nh\u01b0 QC\/T743-2006, SAND2005-3123, UL2580-2011, SAE2464 v\u00e0 c\u00e1c ti\u00eau chu\u1ea9n kh\u00e1c.<\/span><\/span><\/p>\n

\u0110\u1ec3 <\/span><\/span>m\u00f4 ph\u1ecfng t\u1ed1t h\u01a1n hi\u1ec7u \u1ee9ng ng\u1eafn m\u1ea1ch<\/span><\/span><\/a> , c\u00e1c ph\u01b0\u01a1ng ph\u00e1p th\u1eed nghi\u1ec7m kh\u00e1c nhau \u0111\u01b0\u1ee3c gi\u1edbi h\u1ea1n c\u00f3 \u0111i\u1ec1u ki\u1ec7n trong ti\u00eau chu\u1ea9n. C\u00e1c th\u1eed nghi\u1ec7m ch\u00e2m c\u1ee9u ch\u1ec9 \u0111\u1ecbnh t\u1ed1c \u0111\u1ed9 ch\u00e2m kim (QC\/T743-2006 y\u00eau c\u1ea7u 10~40mm\/gi\u00e2y, c\u00e1c ti\u00eau chu\u1ea9n kh\u00e1c y\u00eau c\u1ea7u 80mm\/gi\u00e2y) \u0111\u01b0\u1eddng k\u00ednh kim (th\u01b0\u1eddng l\u00e0 3~8 mm); Th\u00ed nghi\u1ec7m \u0111\u00f9n ch\u1ec9 \u0111\u1ecbnh l\u01b0\u1ee3ng bi\u1ebfn d\u1ea1ng c\u1ee7a \u00e1p su\u1ea5t \u0111\u00f9n (100 kN ho\u1eb7c 1000 l\u1ea7n kh\u1ed1i l\u01b0\u1ee3ng c\u1ee7a m\u1eabu) (th\u01b0\u1eddng l\u00e0 50% bi\u1ebfn d\u1ea1ng) v\u00e0 h\u00ecnh d\u1ea1ng c\u1ee7a \u0111\u0129a \u0111\u00f9n (t\u1ea5m \u0111\u00f9n 30 mm c\u00f3 b\u00e1n k\u00ednh 75 mm); Th\u1eed nghi\u1ec7m th\u1ea3 r\u01a1i ch\u1ec9 \u0111\u1ecbnh c\u00e1c \u0111i\u1ec1u ki\u1ec7n v\u1ec1 chi\u1ec1u cao th\u1ea3 (1 \u0111\u1ebfn 2 m) v\u00e0 b\u1ec1 m\u1eb7t ti\u1ebfp x\u00fac (m\u1eb7t \u0111\u1ea5t n\u1eb1m ngang c\u1ee9ng ho\u1eb7c kh\u00f4ng ph\u1eb3ng) t\u1ea1i th\u1eddi \u0111i\u1ec3m r\u01a1i.<\/span><\/span><\/p>\n

Ph\u01b0\u01a1ng ph\u00e1p th\u1eed nghi\u1ec7m ng\u1eafn m\u1ea1ch m\u00f4 ph\u1ecfng c\u0169ng bao g\u1ed3m th\u00ed nghi\u1ec7m gia nhi\u1ec7t qu\u00e1 t\u1ea3i kh\u00f4ng gi\u1edbi h\u1ea1n \u0111i\u1ec7n tr\u1edf t\u01b0\u01a1ng \u0111\u01b0\u01a1ng song song. Qu\u00e1 t\u1ea3i kh\u00f4ng gi\u1edbi h\u1ea1n l\u00e0 s\u1ea1c pin th\u1eed nghi\u1ec7m \u0111\u00e3 s\u1ea1c \u0111\u1ea7y b\u1eb1ng d\u00f2ng \u0111i\u1ec7n kh\u00f4ng \u0111\u1ed5i cho \u0111\u1ebfn khi \u0111i\u1ec7n \u00e1p gi\u1ea3m xu\u1ed1ng 0V ho\u1eb7c t\u1ea1o ra v\u1ee5 n\u1ed5 ch\u00e1y nh\u1ecf: th\u00ed nghi\u1ec7m gia nhi\u1ec7t l\u00e0 l\u00e0m n\u00f3ng m\u1eabu th\u1eed nghi\u1ec7m, nhi\u1ec7t \u0111\u1ed9 gia nhi\u1ec7t \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh b\u1edfi \u0111i\u1ec7n tr\u1edf nhi\u1ec7t c\u1ee7a m\u00e0ng ng\u0103n v\u00e0 s\u1ef1 co l\u1ea1i c\u1ee7a m\u00e0ng ng\u0103n sau khi gia nhi\u1ec7t g\u00e2y ra hi\u1ec7n t\u01b0\u1ee3ng \u0111o\u1ea3n m\u1ea1ch b\u00ean trong: \u0110i\u1ec7n tr\u1edf t\u01b0\u01a1ng \u0111\u01b0\u01a1ng song song ch\u1ee7 y\u1ebfu nh\u1eafm v\u00e0o monome song song v\u00e0 m\u1ed9t trong c\u00e1c monome \u0111\u01b0\u1ee3c chuy\u1ec3n m\u1ea1ch b\u1eb1ng \u0111i\u1ec7n tr\u1edf t\u01b0\u01a1ng \u0111\u01b0\u01a1ng \u0111\u1ec3 m\u00f4 ph\u1ecfng hi\u1ec7n t\u01b0\u1ee3ng \u0111o\u1ea3n m\u1ea1ch b\u00ean trong.<\/span><\/span><\/p>\n

\u01afu \u0111i\u1ec3m c\u1ee7a ph\u01b0\u01a1ng ph\u00e1p tr\u00ean l\u00e0 \u0111\u01a1n gi\u1ea3n v\u00e0 d\u1ec5 th\u1ef1c hi\u1ec7n, trong khi nh\u01b0\u1ee3c \u0111i\u1ec3m l\u00e0 ch\u1ec9 ph\u1ea3n \u00e1nh hi\u1ec7n t\u01b0\u1ee3ng r\u00f5 r\u00e0ng sau khi x\u1ea3y ra ng\u1eafn m\u1ea1ch b\u00ean trong, c\u00f2n s\u1ef1 t\u00edch t\u1ee5 n\u0103ng l\u01b0\u1ee3ng nhi\u1ec7t \u0111\u00e3 ph\u00e1t sinh tr\u01b0\u1edbc khi x\u1ea3y ra ng\u1eafn m\u1ea1ch b\u00ean trong m\u00e0 kh\u00f4ng h\u1ea1n ch\u1ebf qu\u00e1 t\u1ea3i kh\u00f4ng th\u1ec3 x\u00e1c \u0111\u1ecbnh r\u00f5 r\u00e0ng \u0111\u1ed1i v\u1edbi nhi\u1ec7t gi\u1ea3i ph\u00f3ng sau khi x\u1ea3y ra ng\u1eafn m\u1ea1ch. Ngo\u00e0i ra, c\u0169ng c\u00f3 m\u1ed9t s\u1ef1 kh\u00f4ng ch\u1eafc ch\u1eafn nh\u1ea5t \u0111\u1ecbnh v\u1ec1 ph\u1ea7n n\u00e0o c\u1ee7a cell m\u00e0 ng\u1eafn m\u1ea1ch b\u00ean trong do ph\u01b0\u01a1ng ph\u00e1p tr\u00ean 14 g\u00e2y ra c\u00f3 m\u1ed9t s\u1ed1 h\u1ea1n ch\u1ebf nh\u1ea5t \u0111\u1ecbnh \u0111\u1ed1i v\u1edbi ph\u00e2n t\u00edch c\u01a1 ch\u1ebf.<\/span><\/span><\/p>\n

C\u01b0\u1ee1ng b\u1ee9c ng\u1eafn m\u1ea1ch b\u00ean trong ch\u1ee7 y\u1ebfu l\u00e0 th\u00eam c\u00e1c b\u1ed9 ph\u1eadn nh\u00fang kim lo\u1ea1i v\u00e0 l\u1ed7 th\u1ee7ng m\u00e0ng ng\u0103n b\u00ean trong pin v\u00e0 sau \u0111\u00f3 k\u1ebft h\u1ee3p h\u00ecnh th\u1ee9c \u0111\u00f9n b\u00ean ngo\u00e0i \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c ng\u1eafn m\u1ea1ch b\u00ean trong \u1edf c\u00e1c b\u1ed9 ph\u1eadn kh\u00e1c nhau c\u1ee7a pin. Ngo\u00e0i ra, trung t\u00e2m ng\u1eafn m\u1ea1ch \u0111\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1 b\u1eb1ng c\u00e1ch th\u00eam kim lo\u1ea1i ho\u1eb7c h\u1ee3p kim c\u00f3 \u0111i\u1ec3m n\u00f3ng ch\u1ea3y th\u1ea5p v\u00e0o \u0111i\u1ec7n c\u1ef1c b\u1eb1ng c\u00e1ch nung n\u00f3ng v\u00e0 l\u00e0m n\u00f3ng ch\u1ea3y n\u00f3 b\u1eb1ng c\u00e1ch theo d\u00f5i nhi\u1ec7t \u0111\u1ed9 \u0111i\u1ec7n \u00e1p, \u00e2m thanh, \u00e1nh s\u00e1ng v\u00e0 c\u00e1c c\u00e1ch kh\u00e1c (6. C\u00e1c ph\u01b0\u01a1ng ph\u00e1p n\u00e0y c\u00f3 th\u1ec3 ph\u1ea3n \u00e1nh t\u1ed1t h\u01a1n t\u00e1c \u0111\u1ed9ng c\u1ee7a ng\u1eafn m\u1ea1ch \u1edf c\u00e1c b\u1ed9 ph\u1eadn kh\u00e1c nhau tr\u00ean pin C\u00f3 l\u1ee3i cho ph\u00e2n t\u00edch c\u01a1 ch\u1ebf Nh\u01b0\u1ee3c \u0111i\u1ec3m l\u00e0 pin c\u1ea7n \u0111\u01b0\u1ee3c c\u00e1ch ly v\u1edbi kh\u00f4ng kh\u00ed trong qu\u00e1 tr\u00ecnh th\u00e1o d\u1ee1 v\u00e0 l\u1eafp r\u00e1p, \u0111\u1ed3ng th\u1eddi c\u0169ng c\u00f3 c\u00e1c y\u00eau c\u1ea7u nghi\u00eam ng\u1eb7t v\u1ec1 \u0111\u1ed9 \u1ea9m, \u0111\u1ed9 s\u1ea1ch v\u00e0 m\u1ee9c \u0111\u1ed9 \u0111\u00f3ng g\u00f3i.<\/span><\/span><\/p>\n

Bi\u1ec7n ph\u00e1p ph\u00f2ng ng\u1eeba ng\u1eafn m\u1ea1ch b\u00ean trong v\u00e0 ph\u01b0\u01a1ng ph\u00e1p ph\u00e1t hi\u1ec7n<\/span><\/span><\/span><\/h1>\n

1. Bi\u1ec7n ph\u00e1p ph\u00f2ng ng\u1eeba ng\u1eafn m\u1ea1ch b\u00ean trong<\/span><\/span><\/span><\/h2>\n

(1) V\u1eadt li\u1ec7u pin, c\u1ea3i ti\u1ebfn quy tr\u00ecnh <\/span><\/span>
\nCh\u1ee7 y\u1ebfu l\u00e0 ph\u00f2ng ng\u1eeba b\u1eb1ng c\u00e1ch chuy\u1ec3n sang s\u1eed d\u1ee5ng v\u1eadt li\u1ec7u m\u00e0ng ng\u0103n v\u00e0 s\u1eed d\u1ee5ng ph\u1ee5 gia \u0111i\u1ec7n ph\u00e2n \u0111\u1ec3 ng\u0103n ng\u1eeba t\u1ea1p ch\u1ea5t l\u1eabn v\u00e0o trong quy tr\u00ecnh s\u1ea3n xu\u1ea5t pin v\u00e0 th\u1eed nghi\u1ec7m \u0111\u1ed9 tin c\u1eady c\u1ee7a quy tr\u00ecnh s\u1ea3n xu\u1ea5t.<\/span><\/span><\/p>\n

Nguy c\u01a1 \u0111o\u1ea3n m\u1ea1ch c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c gi\u1ea3m thi\u1ec3u b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng m\u00e0ng ng\u0103n g\u1ed1m. N\u1ebfu kh\u00f4ng th\u1ec3 tr\u00e1nh kh\u1ecfi hi\u1ec7n t\u01b0\u1ee3ng \u0111o\u1ea3n m\u1ea1ch, d\u00f2ng \u0111i\u1ec7n \u0111o\u1ea3n m\u1ea1ch c\u0169ng c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c gi\u1ea3m b\u1eb1ng c\u00e1ch ph\u1ee7 m\u1ed9t l\u1edbp v\u1eadt li\u1ec7u PTC l\u00ean v\u1eadt li\u1ec7u \u0111i\u1ec7n c\u1ef1c, \u0111\u1ec3 t\u0103ng \u0111i\u1ec7n tr\u1edf c\u1ee7a l\u1edbp PTC khi x\u1ea3y ra hi\u1ec7n t\u01b0\u1ee3ng \u0111o\u1ea3n m\u1ea1ch, do \u0111\u00f3 ng\u0103n ch\u1eb7n s\u1ef1 ph\u00e1t sinh nhi\u1ec7t \u0111\u1ed9 m\u1ea5t ki\u1ec3m so\u00e1t. Ngo\u00e0i ra, v\u00ec ch\u1ea5t \u0111i\u1ec7n ph\u00e2n hi\u1ec7n \u0111ang s\u1eed d\u1ee5ng d\u1ef1a tr\u00ean h\u1ec7 th\u1ed1ng alkyl cacbonat d\u1ec5 bay h\u01a1i v\u00e0 ch\u00e1y trong pin, vi\u1ec7c s\u1eed d\u1ee5ng kh\u00f4ng \u0111\u00fang c\u00e1ch s\u1ef1 t\u00edch t\u1ee5 nhi\u1ec7t s\u1ebd g\u00e2y ra ch\u00e1y ho\u1eb7c n\u1ed5 b\u1eb1ng c\u00e1ch thi\u1ebft k\u1ebf ch\u1ea5t \u0111i\u1ec7n ph\u00e2n nh\u01b0 ch\u1ea5t \u0111i\u1ec7n ph\u00e2n ch\u1ed1ng ch\u00e1y ho\u1eb7c s\u1eed d\u1ee5ng ch\u1ea5t \u0111i\u1ec7n ph\u00e2n d\u1ea1ng l\u1ecfng ion ho\u1eb7c th\u00eam v\u1eadt li\u1ec7u oligomer maleimide s\u1ebd l\u00e0m gi\u1ea3m \u0111\u00e1ng k\u1ec3 c\u00e1c r\u1ee7i ro an to\u00e0n do \u0111o\u1ea3n m\u1ea1ch g\u00e2y ra.<\/span><\/span><\/p>\n

T\u1ed1i \u01b0u h\u00f3a v\u00e0 c\u1ea3i thi\u1ec7n quy tr\u00ecnh lo\u1ea1i b\u1ecf t\u1ea1p ch\u1ea5t s\u1ea3n xu\u1ea5t cell pin \u0111\u1ec3 lo\u1ea1i b\u1ecf b\u1ee5i kim lo\u1ea1i s\u1eaft, m\u1ed9t m\u1eb7t, \u0111\u1ec3 ng\u0103n ng\u1eeba c\u00e1c ph\u1ea3n \u1ee9ng ph\u1ee5 kh\u00f4ng th\u1ec3 \u0111\u1ea3o ng\u01b0\u1ee3c v\u1edbi ch\u1ea5t \u0111i\u1ec7n ph\u00e2n trong qu\u00e1 tr\u00ecnh s\u1ea1c v\u00e0 x\u1ea3, m\u1eb7t kh\u00e1c, s\u1ef1 hi\u1ec7n di\u1ec7n c\u1ee7a c\u00e1c h\u1ea1t t\u1ea1p ch\u1ea5t l\u00e0m t\u0103ng th\u00eam nguy c\u01a1 th\u1ee7ng m\u00e0ng ng\u0103n v\u00e0 g\u00e2y ra \u0111o\u1ea3n m\u1ea1ch b\u00ean trong. Tia X c\u0169ng c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 ph\u00e1t hi\u1ec7n s\u1ef1 c\u0103n ch\u1ec9nh c\u1ee7a c\u00e1c t\u1ea5m b\u00ean trong pin, do \u0111\u00f3 tr\u00e1nh \u0111\u01b0\u1ee3c nguy c\u01a1 \u0111o\u1ea3n m\u1ea1ch ti\u1ec1m \u1ea9n.<\/span><\/span><\/p>\n

(2) S\u1eed d\u1ee5ng pin <\/span><\/span>
\nNg\u0103n ng\u1eeba qu\u00e1 tr\u00ecnh gi\u1ea3i ph\u00f3ng lithium khi s\u1ea1c \u1edf nhi\u1ec7t \u0111\u1ed9 th\u1ea5p. Trong \u0111i\u1ec1u ki\u1ec7n nhi\u1ec7t \u0111\u1ed9 th\u1ea5p, \u0111\u1ed9 d\u1eabn ion v\u00e0 h\u1ec7 s\u1ed1 khu\u1ebfch t\u00e1n c\u1ee7a pin lithium-ion gi\u1ea3m \u0111\u00e1ng k\u1ec3, d\u1ec5 d\u1eabn \u0111\u1ebfn gi\u1ea3i ph\u00f3ng lithium trong qu\u00e1 tr\u00ecnh s\u1ea1c, do \u0111\u00f3, khi s\u1eed d\u1ee5ng \u1edf nhi\u1ec7t \u0111\u1ed9 th\u1ea5p, pin ph\u1ea3i \u0111\u01b0\u1ee3c l\u00e0m n\u00f3ng tr\u01b0\u1edbc \u0111\u1ebfn nhi\u1ec7t \u0111\u1ed9 s\u1ea1c th\u00edch h\u1ee3p, \u0111\u1ec3 tr\u00e1nh pin t\u1ea1o ra c\u00e1c nh\u00e1nh c\u00e2y lithium r\u1ed3i \u0111\u00e2m th\u1ee7ng m\u00e0ng ng\u0103n khi s\u1ea1c \u1edf nhi\u1ec7t \u0111\u1ed9 th\u1ea5p.<\/span><\/span><\/p>\n

Thi\u1ebft k\u1ebf d\u1ef1 ph\u00f2ng t\u1ed1c \u0111\u1ed9 s\u1ea1c-x\u1ea3 c\u1ee7a pin. Thi\u1ebft k\u1ebf d\u1ef1 ph\u00f2ng cho ph\u00e9p pin lu\u00f4n ho\u1ea1t \u0111\u1ed9ng \u1edf tr\u1ea1ng th\u00e1i t\u1ea3i th\u1ea5p, c\u00f3 th\u1ec3 b\u1ea3o v\u1ec7 pin hi\u1ec7u qu\u1ea3 v\u00e0 gi\u1ea3m \u0111\u00e1ng k\u1ec3 nguy c\u01a1 \u0111o\u1ea3n m\u1ea1ch b\u00ean trong khi t\u1ea3i cao.<\/span><\/span><\/p>\n

T\u0103ng c\u01b0\u1eddng thi\u1ebft k\u1ebf \u0111\u1ed9 d\u1eabn nhi\u1ec7t c\u1ee7a pin ho\u1eb7c ng\u0103n ch\u1eb7n kh\u1ea3 n\u0103ng sinh nhi\u1ec7t v\u00ec hi\u1ec7n t\u01b0\u1ee3ng \u0111o\u1ea3n m\u1ea1ch b\u00ean trong pin s\u1ebd ngay l\u1eadp t\u1ee9c t\u1ea1o ra m\u1ed9t l\u01b0\u1ee3ng nhi\u1ec7t l\u1edbn. N\u1ebfu nhi\u1ec7t t\u00edch t\u1ee5, n\u00f3 s\u1ebd d\u1eabn \u0111\u1ebfn s\u1ef1 ph\u00e2n h\u1ee7y ch\u1ea5t \u0111i\u1ec7n ph\u00e2n, ph\u1ea3n \u1ee9ng oxy h\u00f3a\/kh\u1eed gi\u1eefa ch\u1ea5t \u0111i\u1ec7n ph\u00e2n v\u00e0 b\u1ec1 m\u1eb7t d\u01b0\u01a1ng\/\u00e2m c\u1ee7a \u0111i\u1ec7n c\u1ef1c d\u01b0\u01a1ng v\u00e0 \u00e2m, v\u00e0 s\u1ef1 co l\u1ea1i v\u00e0 ph\u00e2n h\u1ee7y c\u1ee7a m\u00e0ng ng\u0103n, d\u1eabn \u0111\u1ebfn s\u1ef1 tho\u00e1t nhi\u1ec7t.<\/span><\/span><\/p>\n

2. M\u1ed9t ph\u01b0\u01a1ng ti\u1ec7n ph\u00e1t hi\u1ec7n ng\u1eafn m\u1ea1ch b\u00ean trong pin<\/span><\/span><\/span><\/h2>\n

Ph\u00e1t hi\u1ec7n nhi\u1ec7t: x\u00e1c \u0111\u1ecbnh xem c\u00f3 x\u1ea3y ra hi\u1ec7n t\u01b0\u1ee3ng \u0111o\u1ea3n m\u1ea1ch hay kh\u00f4ng b\u1eb1ng c\u00e1ch g\u1eafn m\u1ed9t c\u1eb7p nhi\u1ec7t \u0111i\u1ec7n v\u00e0o th\u00e0nh b\u00ean c\u1ee7a pin \u0111\u1ec3 ph\u00e1t hi\u1ec7n s\u1ef1 thay \u0111\u1ed5i nhi\u1ec7t \u0111\u1ed9. V\u00ec nhi\u1ec7t \u0111\u01b0\u1ee3c d\u1eabn t\u1eeb trong ra ngo\u00e0i khi x\u1ea3y ra hi\u1ec7n t\u01b0\u1ee3ng \u0111o\u1ea3n m\u1ea1ch, nhi\u1ec7t \u0111\u1ed9 cho th\u1ea5y c\u00f3 \u0111\u1ed9 tr\u1ec5 nh\u1ea5t \u0111\u1ecbnh, do \u0111\u00f3 t\u00ecnh tr\u1ea1ng \u0111o\u1ea3n m\u1ea1ch kh\u00f4ng th\u1ec3 \u0111\u01b0\u1ee3c ph\u1ea3n h\u1ed3i ngay l\u1eadp t\u1ee9c.<\/span><\/span><\/p>\n

Ph\u00e1t hi\u1ec7n b\u1ea5t th\u01b0\u1eddng \u0111i\u1ec7n \u00e1p theo d\u00f5i t\u00ecnh tr\u1ea1ng ng\u1eafn m\u1ea1ch b\u00ean trong c\u1ee7a pin b\u1eb1ng c\u00e1ch theo d\u00f5i s\u1ef1 s\u1ee5t gi\u1ea3m \u0111i\u1ec7n \u00e1p trong qu\u00e1 tr\u00ecnh s\u1ea1c li\u00ean t\u1ee5c b\u1eb1ng d\u00f2ng \u0111i\u1ec7n nh\u1ecf, v\u00ed d\u1ee5, khi s\u1ea1c pin 80Ah b\u1eb1ng d\u00f2ng \u0111i\u1ec7n kh\u00f4ng \u0111\u1ed5i 3A, n\u1ebfu s\u1ef1 s\u1ee5t gi\u1ea3m \u0111i\u1ec7n \u00e1p v\u01b0\u1ee3t qu\u00e1 100mV, c\u00f3 th\u1ec3 x\u00e1c \u0111\u1ecbnh r\u1eb1ng pin b\u1ecb ng\u1eafn m\u1ea1ch b\u00ean trong.<\/span><\/span><\/p>\n

Ph\u00e1t hi\u1ec7n b\u1ea5t th\u01b0\u1eddng v\u1ec1 dung l\u01b0\u1ee3ng: C\u00f3 b\u1eb1ng s\u00e1ng ch\u1ebf li\u00ean quan \u0111\u1ebfn ph\u01b0\u01a1ng ph\u00e1p ph\u00e1t hi\u1ec7n ng\u1eafn m\u1ea1ch b\u00ean trong: trong qu\u00e1 tr\u00ecnh s\u1ea1c, b\u1eb1ng c\u00e1ch so s\u00e1nh dung l\u01b0\u1ee3ng s\u1ea1c v\u1edbi dung l\u01b0\u1ee3ng tham chi\u1ebfu trong ph\u1ea1m vi \u0111i\u1ec7n \u00e1p hi\u1ec7n t\u1ea1i, v\u00ec khi x\u1ea3y ra ng\u1eafn m\u1ea1ch b\u00ean trong, m\u1ed9t ph\u1ea7n n\u0103ng l\u01b0\u1ee3ng \u0111i\u1ec7n s\u1ebd \u0111\u01b0\u1ee3c chuy\u1ec3n \u0111\u1ed5i th\u00e0nh ti\u00eau t\u00e1n n\u0103ng l\u01b0\u1ee3ng nhi\u1ec7t, do \u0111\u00f3 dung l\u01b0\u1ee3ng s\u1ea1c trong qu\u00e1 tr\u00ecnh s\u1ea1c s\u1ebd cao h\u01a1n so v\u1edbi khi kh\u00f4ng x\u1ea3y ra ng\u1eafn m\u1ea1ch b\u00ean trong, v\u00ec v\u1eady khi dung l\u01b0\u1ee3ng s\u1ea1c cao h\u01a1n dung l\u01b0\u1ee3ng tham chi\u1ebfu, l\u1ed7i ng\u1eafn m\u1ea1ch b\u00ean trong \u0111\u01b0\u1ee3c b\u00e1o c\u00e1o. Khi dung l\u01b0\u1ee3ng s\u1ea1c th\u1ea5p h\u01a1n ho\u1eb7c b\u1eb1ng dung l\u01b0\u1ee3ng tham chi\u1ebfu, tr\u1ea1ng th\u00e1i pin l\u00e0 b\u00ecnh th\u01b0\u1eddng.<\/span><\/span><\/p>\n

B\u1ea3n t\u00f3m t\u1eaft<\/span><\/span><\/span><\/h1>\n

Pin lithium-ion b\u1ecb \u0111o\u1ea3n m\u1ea1ch b\u00ean trong r\u1ea5t d\u1ec5 g\u00e2y ra hi\u1ec7n t\u01b0\u1ee3ng m\u1ea5t ki\u1ec3m so\u00e1t nhi\u1ec7t, do \u0111\u00f3, t\u1eeb c\u01a1 ch\u1ebf n\u1eafm b\u1eaft nguy\u00ean nh\u00e2n h\u00ecnh th\u00e0nh, th\u00f4ng qua m\u00f4 ph\u1ecfng \u0111\u1ec3 nghi\u00ean c\u1ee9u s\u00e2u h\u01a1n, \u0111\u1ec3 th\u00f4ng qua nhi\u1ec1u bi\u1ec7n ph\u00e1p kh\u00e1c nhau \u0111\u1ec3 ng\u0103n ng\u1eeba v\u00e0 ph\u00e1t hi\u1ec7n hi\u1ec7n t\u01b0\u1ee3ng \u0111o\u1ea3n m\u1ea1ch b\u00ean trong pin lithium-ion, \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o an to\u00e0n cho pin lithium-ion trong qu\u00e1 tr\u00ecnh s\u1eed d\u1ee5ng.<\/span><\/span><\/p>\n

\n
<\/div>\n
<\/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 nhi\u1ec1u l\u0129nh v\u1ef1c nh\u01b0 thi\u1ebft b\u1ecb di \u0111\u1ed9ng, l\u01b0u tr\u1eef n\u0103ng l\u01b0\u1ee3ng v\u00e0 xe n\u0103ng l\u01b0\u1ee3ng m\u1edbi v\u1edbi \u01b0u \u0111i\u1ec3m l\u00e0 tu\u1ed5i th\u1ecd chu k\u1ef3 cao h\u01a1n n\u0103ng l\u01b0\u1ee3ng, nh\u01b0ng so v\u1edbi c\u00e1c lo\u1ea1i pin kh\u00e1c, v\u1ea5n \u0111\u1ec1 ch\u00ednh c\u1ea7n gi\u1ea3i quy\u1ebft l\u00e0 t\u00ednh an to\u00e0n c\u1ee7a<\/p>\n","protected":false},"author":1,"featured_media":19909,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[88],"tags":[],"class_list":["post-19908","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\/19908","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=19908"}],"version-history":[{"count":2,"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/posts\/19908\/revisions"}],"predecessor-version":[{"id":22107,"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/posts\/19908\/revisions\/22107"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/media\/19909"}],"wp:attachment":[{"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/media?parent=19908"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/categories?post=19908"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/tags?post=19908"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}