{"id":19686,"date":"2023-06-29T09:41:30","date_gmt":"2023-06-29T09:41:30","guid":{"rendered":"http:\/\/dgbellvietnam.com\/battery-internal-short-circuit-test\/"},"modified":"2024-10-21T20:28:44","modified_gmt":"2024-10-21T13:28:44","slug":"battery-internal-short-circuit-test","status":"publish","type":"post","link":"https:\/\/dgbellvietnam.com\/en\/battery-internal-short-circuit-test\/","title":{"rendered":"Th\u1eed nghi\u1ec7m ng\u1eafn m\u1ea1ch trong c\u1ee7a pin"},"content":{"rendered":"
\n

Trong qu\u00e1 tr\u00ecnh s\u1ea3n xu\u1ea5t pin, do s\u1ef1 b\u1ea5t c\u1ea9n trong ki\u1ec3m so\u00e1t quy tr\u00ecnh, c\u00e1c h\u1ea1t kim lo\u1ea1i c\u1ef1c nh\u1ecf \u0111\u00e3 tr\u1ed9n l\u1eabn b\u00ean trong pin lithium-ion. Trong qu\u00e1 tr\u00ecnh s\u1eed d\u1ee5ng pin, nhi\u1ec7t \u0111\u1ed9 thay \u0111\u1ed5i ho\u1eb7c c\u00e1c h\u1ea1t kim lo\u1ea1i va ch\u1ea1m kh\u00e1c nhau \u0111\u00e3 xuy\u00ean th\u1ee7ng l\u1edbp ng\u0103n c\u00e1ch gi\u1eefa c\u00e1c \u0111i\u1ec7n c\u1ef1c d\u01b0\u01a1ng v\u00e0 \u00e2m, g\u00e2y ra hi\u1ec7n t\u01b0\u1ee3ng \u0111o\u1ea3n m\u1ea1ch b\u00ean trong pin v\u00e0 t\u1ea1o ra l\u01b0\u1ee3ng nhi\u1ec7t l\u1edbn, khi\u1ebfn pin b\u1eaft l\u1eeda.<\/span><\/span><\/p>\n

Do c\u00e1c h\u1ea1t kim lo\u1ea1i v\u00f4 t\u00ecnh l\u1ecdt v\u00e0o trong qu\u00e1 tr\u00ecnh s\u1ea3n xu\u1ea5t n\u00ean r\u1ea5t kh\u00f3 \u0111\u1ec3 ng\u0103n ch\u1eb7n ho\u00e0n to\u00e0n c\u00e1c s\u1ef1 c\u1ed1 nh\u01b0 v\u1eady x\u1ea3y ra. Do \u0111\u00f3, ch\u00fang t\u00f4i c\u1ed1 g\u1eafng m\u00f4 ph\u1ecfng t\u00ecnh hu\u1ed1ng c\u00e1c h\u1ea1t kim lo\u1ea1i x\u00e2m nh\u1eadp v\u00e0o b\u1ed9 t\u00e1ch v\u00e0 g\u00e2y ra hi\u1ec7n t\u01b0\u1ee3ng \u0111o\u1ea3n m\u1ea1ch b\u00ean trong th\u00f4ng qua \u201cth\u1eed nghi\u1ec7m \u0111o\u1ea3n m\u1ea1ch b\u00ean trong c\u01b0\u1ee1ng b\u1ee9c\u201d.<\/span><\/span><\/p>\n

N\u1ebfu pin lithium-ion c\u00f3 th\u1ec3 \u0111\u1ea3m b\u1ea3o kh\u00f4ng c\u00f3 nguy c\u01a1 ch\u00e1y n\u1ed5 trong qu\u00e1 tr\u00ecnh th\u1eed nghi\u1ec7m, th\u00ec c\u00f3 th\u1ec3 \u0111\u1ea3m b\u1ea3o hi\u1ec7u qu\u1ea3 r\u1eb1ng ngay c\u1ea3 khi c\u00e1c h\u1ea1t kim lo\u1ea1i \u0111\u01b0\u1ee3c tr\u1ed9n l\u1eabn b\u00ean trong pin trong qu\u00e1 tr\u00ecnh s\u1ea3n xu\u1ea5t, ch\u00fang c\u0169ng kh\u00f4ng th\u1ec3 xuy\u00ean qua l\u1edbp ng\u0103n c\u00e1ch gi\u1eefa c\u00e1c \u0111i\u1ec7n c\u1ef1c d\u01b0\u01a1ng v\u00e0 \u00e2m. Ho\u1eb7c ngay c\u1ea3 khi m\u00e0ng ng\u0103n b\u1ecb th\u1ee7ng v\u00e0 g\u00e2y ra hi\u1ec7n t\u01b0\u1ee3ng \u0111o\u1ea3n m\u1ea1ch b\u00ean trong, v\u1eabn s\u1ebd kh\u00f4ng c\u00f3 nguy c\u01a1 ch\u00e1y n\u1ed5 g\u00e2y nguy hi\u1ec3m cho s\u1ef1 an to\u00e0n c\u1ee7a c\u00e1 nh\u00e2n.<\/span><\/span><\/p>\n

1.Bu\u1ed3ng th\u1eed nghi\u1ec7m<\/span><\/span><\/strong><\/span><\/h1>\n

\u201cTh\u1eed nghi\u1ec7m ng\u1eafn m\u1ea1ch c\u01b0\u1ee1ng b\u1ee9c b\u00ean trong pin \u0111\u01a1n\u201d y\u00eau c\u1ea7u th\u1eed nghi\u1ec7m ph\u1ea3i \u0111\u01b0\u1ee3c ti\u1ebfn h\u00e0nh trong m\u00f4i tr\u01b0\u1eddng 10~60 \u2103, v\u1edbi t\u1ed1c \u0111\u1ed9 \u00e1p d\u1ee5ng \u00e1p su\u1ea5t l\u00e0 0,1mms, y\u00eau c\u1ea7u \u0111\u1ed9 ch\u00ednh x\u00e1c l\u00e0 \u00b1 0,005ms v\u00e0 \u00e1p su\u1ea5t t\u1ed1i \u0111a l\u00e0 1000N. Ngo\u00e0i ra, d\u1eef li\u1ec7u \u0111i\u1ec7n \u00e1p v\u00e0 \u00e1p su\u1ea5t c\u1ea7n \u0111\u01b0\u1ee3c thu th\u1eadp trong qu\u00e1 tr\u00ecnh th\u1eed nghi\u1ec7m.<\/span><\/span><\/p>\n

Khi \u0111i\u1ec7n \u00e1p gi\u1ea3m h\u01a1n 50mV ho\u1eb7c khi \u00e1p su\u1ea5t \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng \u0111\u00e1p \u1ee9ng c\u00e1c y\u00eau c\u1ea7u (\u1eafc quy h\u00ecnh tr\u1ee5 800N, \u1eafc quy vu\u00f4ng 400N), \u00e1p su\u1ea5t ph\u1ea3i d\u1eebng l\u1ea1i v\u00e0 duy tr\u00ec trong 30 gi\u00e2y. \u0110i\u1ec1u n\u00e0y \u0111\u01b0a ra c\u00e1c y\u00eau c\u1ea7u nghi\u00eam ng\u1eb7t \u0111\u1ed1i v\u1edbi thi\u1ebft b\u1ecb ch\u1ecbu \u00e1p su\u1ea5t: th\u1ee9 nh\u1ea5t, ki\u1ec3m so\u00e1t t\u1ed1c \u0111\u1ed9 v\u00e0 \u0111\u1ed9 ch\u00ednh x\u00e1c c\u1ee7a vi\u1ec7c \u00e1p d\u1ee5ng \u00e1p su\u1ea5t; th\u1ee9 hai, \u0111\u1ea3m b\u1ea3o vi\u1ec7c \u00e1p d\u1ee5ng \u00e1p su\u1ea5t; th\u1ee9 ba, ki\u1ec3m so\u00e1t nhi\u1ec7t \u0111\u1ed9 m\u00f4i tr\u01b0\u1eddng; th\u1ee9 t\u01b0, \u0111\u00e1p \u1ee9ng t\u1ea7n su\u1ea5t v\u00e0 \u0111\u1ed9 ch\u00ednh x\u00e1c c\u1ee7a vi\u1ec7c thu th\u1eadp d\u1eef li\u1ec7u \u0111i\u1ec7n \u00e1p v\u00e0 \u00e1p su\u1ea5t.<\/span><\/span><\/p>\n

L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o t\u1ed1c \u0111\u1ed9 ch\u00ednh x\u00e1c 0,1 \u00b1 0,01mm\/gi\u00e2y v\u00e0 \u00e1p su\u1ea5t 100N trong m\u00f4i tr\u01b0\u1eddng nhi\u1ec7t \u0111\u1ed9 cao v\u00e0 th\u1ea5p l\u00e0 c\u00f4ng ngh\u1ec7 then ch\u1ed1t \u0111\u1ec3 thi\u1ebft b\u1ecb th\u1eed nghi\u1ec7m c\u00f3 th\u1ec3 \u0111\u00e1p \u1ee9ng c\u00e1c ti\u00eau chu\u1ea9n th\u1eed nghi\u1ec7m hay kh\u00f4ng. \u0110\u1ec3 t\u1ea1o ra t\u1ed1c \u0111\u1ed9 \u0111\u00e1p \u1ee9ng c\u00e1c y\u00eau c\u1ea7u th\u1eed nghi\u1ec7m, vi\u1ec7c l\u1ef1a ch\u1ecdn v\u1eadt li\u1ec7u thi\u1ebft b\u1ecb tr\u01b0\u1edbc ti\u00ean ph\u1ea3i \u0111\u00e1p \u1ee9ng c\u00e1c y\u00eau c\u1ea7u s\u1eed d\u1ee5ng c\u1ee7a nhi\u1ec7t \u0111\u1ed9 m\u00f4i tr\u01b0\u1eddng th\u1eed nghi\u1ec7m, v\u00e0 ch\u00eca kh\u00f3a kh\u00e1c l\u00e0 l\u1ef1a ch\u1ecdn ngu\u1ed3n \u0111i\u1ec7n v\u00e0 ki\u1ec3m so\u00e1t \u0111\u1ed9 ch\u00ednh x\u00e1c c\u1ee7a thi\u1ebft k\u1ebf c\u01a1 c\u1ea5u truy\u1ec1n \u0111\u1ed9ng.<\/span><\/span><\/p>\n

Ch\u00fang t\u00f4i \u0111\u00e3 ph\u00e1t tri\u1ec3n ” <\/span><\/span>Bu\u1ed3ng th\u1eed nghi\u1ec7m ng\u1eafn m\u1ea1ch b\u00ean trong pin<\/span><\/span><\/a> ” th\u00f4ng qua c\u00e1c th\u00ed nghi\u1ec7m l\u1eb7p \u0111i l\u1eb7p l\u1ea1i, c\u00f3 th\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c \u1ee9ng d\u1ee5ng \u00e1p su\u1ea5t c\u00f3 \u0111\u1ed9 ch\u00ednh x\u00e1c cao. B\u1eb1ng c\u00e1ch trang b\u1ecb h\u1ed9p nhi\u1ec7t \u0111\u1ed9 cao v\u00e0 th\u1ea5p c\u00f3 \u0111\u1ed9 ch\u00ednh x\u00e1c cao v\u00e0 h\u1ec7 th\u1ed1ng thu th\u1eadp d\u1eef li\u1ec7u, ch\u00fang t\u00f4i \u0111\u00e1p \u1ee9ng \u0111\u1ea7y \u0111\u1ee7 c\u00e1c y\u00eau c\u1ea7u v\u1ec1 nhi\u1ec7t \u0111\u1ed9 v\u00e0 y\u00eau c\u1ea7u thu th\u1eadp d\u1eef li\u1ec7u c\u1ee7a thi\u1ebft b\u1ecb \u00e1p su\u1ea5t.<\/span><\/span><\/p>\n

2. C\u00e1c b\u01b0\u1edbc t\u00ednh ph\u00ed cho b\u00e0i th\u1eed<\/span><\/span><\/strong><\/span><\/h1>\n

Ki\u1ec3m tra ng\u1eafn m\u1ea1ch b\u00ean trong c\u01b0\u1ee1ng b\u1ee9c pin \u0111\u01a1n l\u00e0 ki\u1ec3m tra \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n tr\u00ean m\u1ed9t pin \u0111\u01a1n \u0111\u01b0\u1ee3c s\u1ea1c \u0111\u1ea7y. \u0110i\u1ec1u ki\u1ec7n s\u1ea1c l\u00e0 \u1ed5n \u0111\u1ecbnh trong 1-4 gi\u1edd \u1edf nhi\u1ec7t \u0111\u1ed9 th\u1eed nghi\u1ec7m tr\u00ean v\u00e0 d\u01b0\u1edbi t\u01b0\u01a1ng \u1ee9ng, sau \u0111\u00f3 s\u1eed d\u1ee5ng \u0111i\u1ec7n \u00e1p s\u1ea1c tr\u00ean v\u00e0 d\u00f2ng \u0111i\u1ec7n s\u1ea1c t\u1ed1i \u0111a \u0111\u1ec3 s\u1ea1c cho \u0111\u1ebfn khi gi\u00e1 tr\u1ecb d\u00f2ng \u0111i\u1ec7n d\u01b0\u1edbi \u0111i\u1ec1u khi\u1ec3n s\u1ea1c \u0111i\u1ec7n \u00e1p kh\u00f4ng \u0111\u1ed5i tr\u1edf th\u00e0nh 0,05ItA.<\/span><\/span><\/p>\n

Nhi\u1ec7t \u0111\u1ed9 th\u1eed nghi\u1ec7m gi\u1edbi h\u1ea1n tr\u00ean v\u00e0 d\u01b0\u1edbi cho bi\u1ebft khi pin c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng \u0111i\u1ec7n \u00e1p s\u1ea1c gi\u1edbi h\u1ea1n tr\u00ean v\u00e0 d\u00f2ng \u0111i\u1ec7n s\u1ea1c t\u1ed1i \u0111a, nhi\u1ec7t \u0111\u1ed9 cao nh\u1ea5t v\u00e0 th\u1ea5p nh\u1ea5t tr\u00ean b\u1ec1 m\u1eb7t c\u1ee7a cell pin \u0111\u01b0\u1ee3c ch\u1ecdn \u0111\u1ec3 s\u1ea1c trong \u0111i\u1ec1u ki\u1ec7n nhi\u1ec7t \u0111\u1ed9 th\u1eed nghi\u1ec7m gi\u1edbi h\u1ea1n tr\u00ean v\u00e0 d\u01b0\u1edbi d\u1ef1a tr\u00ean \u0111\u1eb7c t\u00ednh v\u1eadt li\u1ec7u c\u1ee7a pin lithium.<\/span><\/span><\/p>\n

Nhi\u1ec7t \u0111\u1ed9 th\u1eed nghi\u1ec7m tr\u00ean v\u00e0 d\u01b0\u1edbi do JSC 8714 \u0111\u1ec1 xu\u1ea5t l\u1ea7n l\u01b0\u1ee3t l\u00e0 45 \u2103 v\u00e0 10 \u2103. \u0110i\u1ec7n \u00e1p s\u1ea1c tr\u00ean l\u00e0 4,25V, d\u1ef1a tr\u00ean \u0111\u1eb7c \u0111i\u1ec3m c\u1ee7a v\u1eadt li\u1ec7u pin lithium-ion (\u0111i\u1ec7n c\u1ef1c \u00e2m oxit lithium coban \u2022 \u0111i\u1ec7n c\u1ef1c d\u01b0\u01a1ng cacbon) th\u01b0\u1eddng d\u00f9ng tr\u00ean th\u1ecb tr\u01b0\u1eddng v\u00e0 kh\u00f4ng th\u1ec3 \u0111\u1ea1i di\u1ec7n cho t\u1ea5t c\u1ea3 c\u00e1c lo\u1ea1i pin lithium.<\/span><\/span><\/p>\n

JSC8714 \u0111\u1ec1 xu\u1ea5t r\u1eb1ng n\u1ebfu c\u1ea7n s\u1eed d\u1ee5ng nhi\u1ec7t \u0111\u1ed9 th\u1eed nghi\u1ec7m tr\u00ean v\u00e0 d\u01b0\u1edbi m\u1edbi v\u00e0 \u0111i\u1ec7n \u00e1p s\u1ea1c tr\u00ean, c\u1ea7n ph\u1ea3i ti\u1ebfn h\u00e0nh m\u1ed9t s\u1ed1 th\u1eed nghi\u1ec7m nh\u1ea5t \u0111\u1ecbnh v\u00e0 c\u1ea7n b\u1ed5 sung c\u01a1 s\u1edf d\u1eef li\u1ec7u b\u1ed5 sung. N\u1ed9i dung \u0111i\u1ec1u tra \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh \u0111i\u1ec7n \u00e1p s\u1ea1c gi\u1edbi h\u1ea1n tr\u00ean m\u1edbi bao g\u1ed3m: t\u00ednh \u1ed5n \u0111\u1ecbnh v\u1ec1 m\u1eb7t c\u1ea5u tr\u00fac c\u1ee7a v\u1eadt li\u1ec7u \u0111i\u1ec7n c\u1ef1c d\u01b0\u01a1ng, s\u1ef1 h\u1ea5p th\u1ee5 lithium c\u1ee7a v\u1eadt li\u1ec7u \u0111i\u1ec7n c\u1ef1c \u00e2m v\u00e0 t\u00ednh \u1ed5n \u0111\u1ecbnh v\u1ec1 m\u1eb7t c\u1ea5u tr\u00fac c\u1ee7a ch\u1ea5t \u0111i\u1ec7n ph\u00e2n;<\/span><\/span><\/p>\n

Khi x\u00e1c \u0111\u1ecbnh nhi\u1ec7t \u0111\u1ed9 th\u1eed nghi\u1ec7m gi\u1edbi h\u1ea1n tr\u00ean v\u00e0 d\u01b0\u1edbi m\u1edbi, n\u1ed9i dung ki\u1ec3m tra bao g\u1ed3m t\u00ednh \u1ed5n \u0111\u1ecbnh v\u1ec1 m\u1eb7t c\u1ea5u tr\u00fac c\u1ee7a v\u1eadt li\u1ec7u \u0111i\u1ec7n c\u1ef1c d\u01b0\u01a1ng, t\u00ednh \u1ed5n \u0111\u1ecbnh v\u1ec1 m\u1eb7t c\u1ea5u tr\u00fac c\u1ee7a ch\u1ea5t \u0111i\u1ec7n ph\u00e2n v\u00e0 c\u00e1c \u0111\u1eb7c t\u00ednh v\u1eadt li\u1ec7u kh\u00e1c c\u1ea7n \u0111\u1ea3m b\u1ea3o an to\u00e0n cho pin \u0111\u00e3 s\u1ea1c \u1edf nhi\u1ec7t \u0111\u1ed9 th\u1eed nghi\u1ec7m gi\u1edbi h\u1ea1n tr\u00ean m\u1edbi.<\/span><\/span><\/p>\n

Ngo\u00e0i ra, 5 \u2103 \u0111\u01b0\u1ee3c th\u00eam v\u00e0o nhi\u1ec7t \u0111\u1ed9 th\u1eed nghi\u1ec7m gi\u1edbi h\u1ea1n tr\u00ean m\u1edbi, \u00e1p d\u1ee5ng cho c\u00e1c \u0111i\u1ec1u ki\u1ec7n s\u1ea1c c\u1ee7a JSC8714 m\u1ee5c 5.1 v\u00e0 \u0111\u00e1p \u1ee9ng c\u00e1c y\u00eau c\u1ea7u th\u1eed nghi\u1ec7m c\u1ee7a c\u00e1c m\u1ee5c 5.2-5.5. D\u1ef1a tr\u00ean s\u1ef1 h\u1ea5p th\u1ee5 ion lithium c\u1ee7a v\u1eadt li\u1ec7u \u0111i\u1ec7n c\u1ef1c \u00e2m \u0110\u1ed9 linh \u0111\u1ed9ng c\u1ee7a c\u00e1c ion lithium trong ch\u1ea5t \u0111i\u1ec7n ph\u00e2n (t\u01b0\u01a1ng \u1ee9ng v\u1edbi nhi\u1ec7t \u0111\u1ed9) s\u1ebd \u0111\u1ea3m b\u1ea3o an to\u00e0n cho pin \u0111\u00e3 s\u1ea1c \u1edf nhi\u1ec7t \u0111\u1ed9 th\u1eed nghi\u1ec7m gi\u1edbi h\u1ea1n d\u01b0\u1edbi m\u1edbi v\u00e0 5 \u2103 n\u00ean \u0111\u01b0\u1ee3c th\u00eam v\u00e0o nhi\u1ec7t \u0111\u1ed9 th\u1eed nghi\u1ec7m gi\u1edbi h\u1ea1n d\u01b0\u1edbi m\u1edbi \u0111\u1ec3 \u0111\u00e1p \u1ee9ng c\u00e1c \u0111i\u1ec1u ki\u1ec7n s\u1ea1c c\u1ee7a 5.1 v\u00e0 \u0111\u00e1p \u1ee9ng c\u00e1c y\u00eau c\u1ea7u th\u1eed nghi\u1ec7m t\u1eeb 5.2 \u0111\u1ebfn 5.5.<\/span><\/span><\/p>\n

3. C\u00e1c b\u01b0\u1edbc \u00e1p d\u1ee5ng \u00e1p su\u1ea5t<\/span><\/span><\/strong><\/span><\/h1>\n

Trong \u0111i\u1ec1u ki\u1ec7n nhi\u1ec7t \u0111\u1ed9 tr\u00ean v\u00e0 d\u01b0\u1edbi, s\u1eed d\u1ee5ng d\u1ee5ng c\u1ee5 t\u1ea1o \u00e1p su\u1ea5t \u0111\u1ec3 t\u1ea1o \u00e1p su\u1ea5t v\u1edbi t\u1ed1c \u0111\u1ed9 0,1 mm\/gi\u00e2y t\u1ea1i v\u1ecb tr\u00ed \u0111\u1eb7t m\u1ed9t t\u1ea5m niken nh\u1ecf tr\u00ean m\u1ed9t c\u1ee5c pin \u0111\u01a1n. \u0110\u1ed3ng th\u1eddi, s\u1eed d\u1ee5ng V\u00f4n k\u1ebf \u0111\u1ec3 theo d\u00f5i s\u1ef1 thay \u0111\u1ed5i \u0111i\u1ec7n \u00e1p t\u1ea1i \u0111\u1ea7u ra c\u1ee7a c\u1ee5c pin \u0111\u01a1n. Khi quan s\u00e1t th\u1ea5y \u0111i\u1ec7n \u00e1p gi\u1ea3m l\u1edbn h\u01a1n 50mV ho\u1eb7c khi \u00e1p su\u1ea5t \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng \u0111\u00e1p \u1ee9ng c\u00e1c y\u00eau c\u1ea7u (pin h\u00ecnh tr\u1ee5 800N pin vu\u00f4ng 400N), h\u00e3y d\u1eebng gi\u1ea3m c\u00f4ng c\u1ee5 t\u1ea1o \u00e1p su\u1ea5t, gi\u1eef trong 30 gi\u00e2y, sau \u0111\u00f3 lo\u1ea1i b\u1ecf \u00e1p su\u1ea5t.<\/span><\/span><\/p>\n

S\u1eed d\u1ee5ng m\u1ee9c \u00e1p su\u1ea5t ch\u1eadm t\u1edbi 0,1mm\/gi\u00e2y c\u00f3 th\u1ec3 ki\u1ec3m so\u00e1t t\u1ed1t h\u01a1n th\u1eddi gian v\u00e0 m\u1ee9c \u0111\u1ed9 nghi\u00eam tr\u1ecdng c\u1ee7a hi\u1ec7n t\u01b0\u1ee3ng \u0111o\u1ea3n m\u1ea1ch b\u00ean trong. Khi x\u1ea3y ra hi\u1ec7n t\u01b0\u1ee3ng s\u1ee5t \u00e1p 5mV trong qu\u00e1 tr\u00ecnh \u00e1p d\u1ee5ng \u00e1p su\u1ea5t, \u0111i\u1ec1u \u0111\u00f3 cho th\u1ea5y t\u1ea5m niken nh\u1ecf \u0111\u01b0\u1ee3c \u0111\u1eb7t b\u00ean trong pin \u0111\u01a1n \u0111\u00e3 \u0111\u00e2m th\u1ee7ng b\u1ed9 t\u00e1ch pin d\u01b0\u1edbi \u00e1p su\u1ea5t, g\u00e2y ra hi\u1ec7n t\u01b0\u1ee3ng \u0111o\u1ea3n m\u1ea1ch b\u00ean trong pin \u0111\u01a1n. L\u00fac n\u00e0y, kh\u00f4ng c\u1ea7n ti\u1ebfp t\u1ee5c \u00e1p d\u1ee5ng \u00e1p su\u1ea5t. N\u1ebfu \u00e1p su\u1ea5t \u0111\u1ea1t 800N v\u00e0 pin vu\u00f4ng \u0111\u01b0\u1ee3c n\u00e9n \u1edf m\u1ee9c 400N, v\u1eabn kh\u00f4ng c\u00f3 hi\u1ec7n t\u01b0\u1ee3ng s\u1ee5t \u00e1p, \u0111i\u1ec1u \u0111\u00f3 cho th\u1ea5y b\u1ed9 t\u00e1ch pin \u0111\u01a1n c\u00f3 th\u1ec3 ng\u0103n ng\u1eeba hi\u1ec7u qu\u1ea3 hi\u1ec7n t\u01b0\u1ee3ng th\u1ee7ng t\u1ea5m niken nh\u1ecf, \u0111i\u1ec1u n\u00e0y c\u0169ng c\u00f3 th\u1ec3 ng\u0103n ng\u1eeba hi\u1ec7n t\u01b0\u1ee3ng \u0111o\u1ea3n m\u1ea1ch b\u00ean trong pin \u0111\u01a1n sau khi tr\u1ed9n v\u1edbi c\u00e1c h\u1ea1t kim lo\u1ea1i nh\u1ecf.<\/span><\/span><\/p>\n

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

V\u1edbi vi\u1ec7c \u1ee9ng d\u1ee5ng ng\u00e0y c\u00e0ng r\u1ed9ng r\u00e3i c\u1ee7a pin lithium-ion v\u00e0 s\u1ef1 ti\u1ebfn b\u1ed9 li\u00ean t\u1ee5c c\u1ee7a c\u00e1c c\u00f4ng ngh\u1ec7 li\u00ean quan, c\u00e1c y\u00eau c\u1ea7u v\u1ec1 an to\u00e0n c\u1ee7a ch\u00fang c\u0169ng ng\u00e0y c\u00e0ng t\u0103ng. Nhi\u1ec1u qu\u1ed1c gia, t\u1ed5 ch\u1ee9c v\u00e0 doanh nghi\u1ec7p \u0111ang t\u00edch c\u1ef1c nghi\u00ean c\u1ee9u c\u00e1c ph\u01b0\u01a1ng ph\u00e1p ph\u00e1t hi\u1ec7n c\u00f3 th\u1ec3 \u0111\u00e1nh gi\u00e1 ch\u00ednh x\u00e1c v\u00e0 hi\u1ec7u qu\u1ea3 h\u01a1n v\u1ec1 t\u00ednh an to\u00e0n c\u1ee7a pin lithium-ion. Ch\u1ec9 b\u1eb1ng c\u00e1ch li\u00ean t\u1ee5c nghi\u00ean c\u1ee9u v\u00e0 kh\u00e1m ph\u00e1 c\u00e1c \u0111\u1eb7c t\u00ednh \u0111i\u1ec7n h\u00f3a v\u00e0 m\u00f4i tr\u01b0\u1eddng c\u1ee7a pin lithium-ion, ch\u00fang ta m\u1edbi c\u00f3 th\u1ec3 ph\u00e1t tri\u1ec3n c\u00e1c d\u1ef1 \u00e1n v\u00e0 \u0111i\u1ec1u ki\u1ec7n th\u1eed nghi\u1ec7m pin lithium-ion khoa h\u1ecdc, c\u00f3 m\u1ee5c ti\u00eau v\u00e0 kh\u1ea3 thi h\u01a1n.<\/span><\/span><\/p>\n

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

Trong qu\u00e1 tr\u00ecnh s\u1ea3n xu\u1ea5t pin, do s\u1ef1 b\u1ea5t c\u1ea9n trong ki\u1ec3m so\u00e1t quy tr\u00ecnh, c\u00e1c h\u1ea1t kim lo\u1ea1i c\u1ef1c nh\u1ecf \u0111\u00e3 tr\u1ed9n l\u1eabn b\u00ean trong pin lithium-ion. Trong qu\u00e1 tr\u00ecnh s\u1eed d\u1ee5ng pin, nhi\u1ec7t \u0111\u1ed9 thay \u0111\u1ed5i ho\u1eb7c c\u00e1c h\u1ea1t kim lo\u1ea1i va ch\u1ea1m kh\u00e1c nhau \u0111\u00e3 xuy\u00ean th\u1ee7ng l\u1edbp ng\u0103n c\u00e1ch gi\u1eefa c\u00e1c<\/p>\n","protected":false},"author":1,"featured_media":19687,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[88],"tags":[],"class_list":["post-19686","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\/19686","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=19686"}],"version-history":[{"count":1,"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/posts\/19686\/revisions"}],"predecessor-version":[{"id":21981,"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/posts\/19686\/revisions\/21981"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/media\/19687"}],"wp:attachment":[{"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/media?parent=19686"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/categories?post=19686"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/tags?post=19686"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}