{"id":19609,"date":"2024-01-17T08:10:14","date_gmt":"2024-01-17T08:10:14","guid":{"rendered":"http:\/\/dgbellvietnam.com\/lithium-battery-pack-thermal-stability-test-part-2\/"},"modified":"2024-10-21T15:57:55","modified_gmt":"2024-10-21T08:57:55","slug":"lithium-battery-pack-thermal-stability-test-part-2","status":"publish","type":"post","link":"https:\/\/dgbellvietnam.com\/en\/lithium-battery-pack-thermal-stability-test-part-2\/","title":{"rendered":"Th\u1eed nghi\u1ec7m \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh c\u1ee7a pack pin Lithium \u2013 Ph\u1ea7n 2"},"content":{"rendered":"
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2.1 Hi\u1ec7n t\u01b0\u1ee3ng ch\u00e1y<\/span><\/span><\/span><\/h2>\n

Khi \u0111\u01b0\u1ee3c l\u00e0m n\u00f3ng t\u1eeb b\u00ean d\u01b0\u1edbi, qu\u00e1 tr\u00ecnh \u0111\u1ed1t ch\u00e1y th\u00f4ng th\u01b0\u1eddng c\u1ee7a pack pin lithium-ion c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c chia th\u00e0nh s\u00e1u giai \u0111o\u1ea1n sau d\u1ef1a tr\u00ean m\u1ee9c \u0111\u1ed9 nghi\u00eam tr\u1ecdng c\u1ee7a qu\u00e1 tr\u00ecnh \u0111\u1ed1t ch\u00e1y.<\/span><\/span><\/p>\n

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(1) Giai \u0111o\u1ea1n gia nhi\u1ec7t. Sau khi l\u00f2 nung li\u00ean t\u1ee5c l\u00e0m n\u00f3ng \u0111i\u1ec7n c\u1ef1c \u00e2m c\u1ee7a c\u1ee5m pin lithium trong m\u1ed9t kho\u1ea3ng th\u1eddi gian, kh\u00f3i s\u1ebd d\u1ea7n h\u00ecnh th\u00e0nh tr\u00ean b\u1ec1 m\u1eb7t pin, m\u1ed9t ph\u1ea7n trong s\u1ed1 \u0111\u00f3 xu\u1ea5t ph\u00e1t t\u1eeb h\u01b0 h\u1ecfng c\u1ee7a \u0111i\u1ec7n c\u1ef1c d\u01b0\u01a1ng c\u1ee7a cell pin lithium. \u0110i\u1ec1u n\u00e0y l\u00e0 do n\u1eafp \u0111i\u1ec7n c\u1ef1c d\u01b0\u01a1ng c\u1ee7a cell pin c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c nh\u00ecn th\u1ea5y b\u1ecb r\u1eeda tr\u00f4i b\u1edfi \u00e1p su\u1ea5t kh\u00f4ng kh\u00ed t\u1ea1i \u0111\u1ecba \u0111i\u1ec3m th\u1eed nghi\u1ec7m ho\u1eb7c trong video. \u0110i\u1ec1u n\u00e0y ch\u1ec9 ra r\u1eb1ng m\u1ed9t ph\u1ea3n \u1ee9ng d\u1eef d\u1ed9i \u0111\u00e3 x\u1ea3y ra b\u00ean trong pin do qu\u00e1 tr\u00ecnh gia nhi\u1ec7t li\u00ean t\u1ee5c, t\u1ea1o ra m\u1ed9t l\u01b0\u1ee3ng l\u1edbn kh\u00ed, sau \u0111\u00f3 l\u00e0 m\u1ed9t l\u01b0\u1ee3ng nh\u1ecf ch\u1ea5t \u0111i\u1ec7n ph\u00e2n tho\u00e1t ra t\u1eeb \u0111i\u1ec7n c\u1ef1c d\u01b0\u01a1ng c\u1ee7a pin, nh\u01b0 th\u1ec3 hi\u1ec7n trong (a).<\/span><\/span><\/p>\n

(2) Giai \u0111o\u1ea1n ch\u00e1y. Trong th\u00ed nghi\u1ec7m, ng\u01b0\u1eddi ta quan s\u00e1t th\u1ea5y pin t\u1ea1o ra m\u1ed9t l\u01b0\u1ee3ng kh\u00f3i l\u1edbn tr\u01b0\u1edbc khi \u0111\u00e1nh l\u1eeda, trong \u0111\u00f3 c\u00f3 nhi\u1ec1u ch\u1ea5t d\u1ec5 ch\u00e1y, bao g\u1ed3m c\u1ea3 nh\u1eefng ch\u1ea5t sinh ra t\u1eeb ph\u1ea3n \u1ee9ng b\u00ean trong c\u1ee7a pin, c\u0169ng nh\u01b0 nh\u1eefng ch\u1ea5t sinh ra t\u1eeb qu\u00e1 tr\u00ecnh ph\u00e2n h\u1ee7y nhi\u1ec7t c\u1ee7a v\u1eadt li\u1ec7u \u0111\u00f3ng g\u00f3i c\u1ee7a b\u1ed9 pin. Sau khi nhi\u1ec7t t\u00edch t\u1ee5 \u0111\u1ebfn m\u1ed9t m\u1ee9c \u0111\u1ed9 nh\u1ea5t \u0111\u1ecbnh, qu\u00e1 tr\u00ecnh \u0111\u00e1nh l\u1eeda x\u1ea3y ra, nh\u01b0 th\u1ec3 hi\u1ec7n \u1edf (b).<\/span><\/span><\/p>\n

(3) Giai \u0111o\u1ea1n \u0111\u00e1nh l\u1eeda. \u0110\u1ed1i v\u1edbi \u0111i\u1ec1u ki\u1ec7n th\u1eed nghi\u1ec7m gia nhi\u1ec7t t\u1eeb d\u01b0\u1edbi l\u00ean, ph\u1ea7n gi\u1eefa c\u1ee7a pin lithium nh\u1eadn \u0111\u01b0\u1ee3c nhi\u1ec7t t\u1eadp trung nh\u1ea5t, nh\u01b0 th\u1ec3 hi\u1ec7n trong \u00f4 g\u1ea1ch ngang m\u00e0u \u0111\u1ecf \u1edf H\u00ecnh 4 (a). Do \u0111\u00f3, ph\u1ea7n gi\u1eefa c\u1ee7a b\u1ed9 pin b\u1eaft \u0111\u1ea7u \u0111\u01b0\u1ee3c \u0111\u00e1nh l\u1eeda tr\u00ean m\u1ed9t di\u1ec7n t\u00edch l\u1edbn, sau \u0111\u00f3 lan ra c\u00e1c khu v\u1ef1c xung quanh. V\u1eadt li\u1ec7u b\u00ean trong cell pin c\u0169ng b\u1ecb phun ra, nh\u01b0 th\u1ec3 hi\u1ec7n trong (c).<\/span><\/span><\/p>\n

(4) Giai \u0111o\u1ea1n phun. Sau khi b\u1ec1 m\u1eb7t c\u1ee7a c\u1ee5m pin lithium b\u1eaft l\u1eeda, nhi\u1ec7t \u0111\u1ed9 t\u0103ng \u0111\u1ed9t ng\u1ed9t, khi\u1ebfn van an to\u00e0n c\u1ee7a c\u00e1c cell pin l\u1ea7n l\u01b0\u1ee3t m\u1edf ra, sau \u0111\u00f3 kh\u00ed d\u1ec5 ch\u00e1y \u0111\u01b0\u1ee3c phun ra ngo\u00e0i, nh\u01b0 th\u1ec3 hi\u1ec7n \u1edf (d), k\u00e8m theo ch\u1ea5t \u0111i\u1ec7n ph\u00e2n b\u1eafn tung t\u00f3e kh\u1eafp n\u01a1i, nh\u01b0 th\u1ec3 hi\u1ec7n \u1edf (e). \u1ede giai \u0111o\u1ea1n n\u00e0y, hi\u1ec7n t\u01b0\u1ee3ng d\u1ec5 th\u1ea5y l\u00e0 ch\u00e1y d\u1eef d\u1ed9i v\u00e0 ti\u1ebfng n\u1ed5 d\u1eef d\u1ed9i. C\u00e1c cell pin c\u0169ng b\u1eafn tung t\u00f3e kh\u1eafp n\u01a1i d\u01b0\u1edbi \u00e1p su\u1ea5t b\u00ean trong, khi\u1ebfn vi\u1ec7c thu th\u1eadp c\u00e1c thay \u0111\u1ed5i nhi\u1ec7t \u0111\u1ed9 trong qu\u00e1 tr\u00ecnh th\u1eed nghi\u1ec7m tr\u1edf n\u00ean kh\u00f3 kh\u0103n. C\u1eb7p nhi\u1ec7t \u0111i\u1ec7n \u0111\u01b0\u1ee3c b\u1ed1 tr\u00ed tr\u01b0\u1edbc khi th\u1eed nghi\u1ec7m d\u1ec5 b\u1ecb h\u01b0 h\u1ecfng ho\u1eb7c di chuy\u1ec3n do v\u1ee5 n\u1ed5 n\u00e0y v\u00e0 kh\u00f4ng th\u1ec3 \u0111\u1ea3m b\u1ea3o \u0111o nhi\u1ec7t \u0111\u1ed9 thay \u0111\u1ed5i theo th\u1eddi gian th\u1ef1c t\u1ea1i c\u00f9ng m\u1ed9t v\u1ecb tr\u00ed.<\/span><\/span><\/p>\n

(5) Giai \u0111o\u1ea1n \u0111\u1ed1t ch\u00e1y t\u1ed5ng th\u1ec3. Khi van an to\u00e0n c\u1ee7a h\u1ea7u h\u1ebft c\u00e1c cell pin lithium \u0111\u01b0\u1ee3c x\u1ea3 m\u1edf, c\u1ee5m pin lithium s\u1ebd b\u01b0\u1edbc v\u00e0o giai \u0111o\u1ea1n \u0111\u1ed1t ch\u00e1y t\u1ed5ng th\u1ec3, t\u1ea1i \u0111\u00f3 chi\u1ec1u cao ng\u1ecdn l\u1eeda cao h\u01a1n v\u00e0 th\u1ec3 t\u00edch ng\u1ecdn l\u1eeda l\u1edbn h\u01a1n, nh\u01b0 th\u1ec3 hi\u1ec7n \u1edf (f).<\/span><\/span><\/p>\n

(6) Giai \u0111o\u1ea1n suy y\u1ebfu. Sau khi v\u1eadt li\u1ec7u d\u1ec5 ch\u00e1y b\u00ean trong pin d\u1ea7n d\u1ea7n b\u1ecb \u0111\u1ed1t ch\u00e1y, ng\u1ecdn l\u1eeda s\u1ebd t\u1eaft.<\/span><\/span><\/p>\n

Khi b\u1ed9 pin lithium \u0111\u01b0\u1ee3c l\u00e0m n\u00f3ng t\u1eeb b\u00ean c\u1ea1nh, qu\u00e1 tr\u00ecnh \u0111\u1ed1t ch\u00e1y \u0111\u01b0\u1ee3c th\u1ec3 hi\u1ec7n trong h\u00ecnh v\u00e0 to\u00e0n b\u1ed9 giai \u0111o\u1ea1n \u0111\u1ed1t ch\u00e1y g\u1ea7n gi\u1ed1ng v\u1edbi \u0111i\u1ec1u ki\u1ec7n l\u00e0m n\u00f3ng d\u01b0\u1edbi c\u00f9ng, bao g\u1ed3m \u0111\u00e1nh l\u1eeda, \u0111\u00e1nh l\u1eeda, phun v\u00e0 c\u00e1c qu\u00e1 tr\u00ecnh kh\u00e1c. Theo quan \u0111i\u1ec3m v\u1ec1 th\u1eddi gian \u0111\u00e1nh l\u1eeda, ngo\u1ea1i tr\u1eeb vi\u1ec7c gi\u1ea3m \u0111\u00e1ng k\u1ec3 th\u1eddi gian \u0111\u00e1nh l\u1eeda trong Th\u1eed nghi\u1ec7m 2, hai ph\u01b0\u01a1ng ph\u00e1p l\u00e0m n\u00f3ng trong b\u00e0i vi\u1ebft n\u00e0y kh\u00f4ng c\u00f3 t\u00e1c \u0111\u1ed9ng \u0111\u00e1ng k\u1ec3 \u0111\u1ebfn th\u1eddi gian \u0111\u00e1nh l\u1eeda. Tuy nhi\u00ean, sau khi t\u0103ng g\u1ea5p \u0111\u00f4i c\u00f4ng su\u1ea5t, t\u1eeb 1 kW l\u00ean 2 kW, ch\u1eb3ng h\u1ea1n, so v\u1edbi Th\u1eed nghi\u1ec7m 3 v\u00e0 Th\u1eed nghi\u1ec7m 1, v\u00e0 Th\u1eed nghi\u1ec7m 5 v\u00e0 Th\u1eed nghi\u1ec7m 4, \u1edf c\u00f9ng m\u1ed9t v\u1ecb tr\u00ed l\u00e0m n\u00f3ng, vi\u1ec7c t\u0103ng c\u00f4ng su\u1ea5t s\u1ebd r\u00fat ng\u1eafn \u0111\u00e1ng k\u1ec3 th\u1eddi gian \u0111\u00e1nh l\u1eeda.<\/span><\/span><\/p>\n

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Nh\u01b0 th\u1ec3 hi\u1ec7n \u1edf (a), m\u1eb7t b\u00ean c\u1ee7a b\u1ed9 pin lithium \u0111\u01b0\u1ee3c l\u00e0m n\u00f3ng b\u1eb1ng ngu\u1ed3n nhi\u1ec7t b\u1ee9c x\u1ea1 b\u00ean ngo\u00e0i. Sau m\u1ed9t kho\u1ea3ng th\u1eddi gian, b\u1ed9 pin g\u1ea7n ngu\u1ed3n nhi\u1ec7t nh\u1ea5t s\u1ebd b\u1eaft l\u1eeda tr\u01b0\u1edbc, nh\u01b0 th\u1ec3 hi\u1ec7n \u1edf (b), sau \u0111\u00f3 ch\u00e1y v\u00e0 lan t\u1eeb ph\u1ea3i sang tr\u00e1i.<\/span><\/span><\/p>\n

Van an to\u00e0n c\u1ee7a cell pin g\u1ea7n ng\u1ecdn l\u1eeda nhi\u1ec7t \u0111\u1ed9 cao b\u1ecb \u0111\u1ea9y m\u1edf, t\u1ea1o ra kh\u00f3i tr\u1eafng, nh\u01b0 th\u1ec3 hi\u1ec7n \u1edf (c), k\u00e8m theo hi\u1ec7n t\u01b0\u1ee3ng tia l\u1eeda b\u1eafn ra, nh\u01b0 th\u1ec3 hi\u1ec7n \u1edf (d), \u0110i\u1ec1u n\u00e0y cho th\u1ea5y ch\u1ea5t \u0111i\u1ec7n ph\u00e2n b\u00ean trong cell pin b\u1ecb phun ra ngo\u00e0i. Ng\u1ecdn l\u1eeda tr\u00ean b\u1ec1 m\u1eb7t c\u1ee7a c\u1ee5m pin d\u1ea7n t\u1eaft trong qu\u00e1 tr\u00ecnh lan truy\u1ec1n, trong khi pin ch\u01b0a b\u1eaft l\u1eeda v\u1eabn \u0111ang tr\u1ea3i qua ph\u1ea3n \u1ee9ng d\u1eef d\u1ed9i b\u00ean trong.<\/span><\/span><\/p>\n

L\u00fac n\u00e0y, c\u00f3 th\u1ec3 quan s\u00e1t th\u1ea5y m\u1ed9t l\u01b0\u1ee3ng l\u1edbn kh\u00f3i tr\u1eafng, nh\u01b0 th\u1ec3 hi\u1ec7n \u1edf (f), l\u00e0 kh\u00ed \u0111\u01b0\u1ee3c t\u1ea1o ra b\u1edfi ph\u1ea3n \u1ee9ng b\u00ean trong c\u1ee7a cell pin. Khi g\u1eb7p nhi\u1ec7t \u0111\u1ed9 cao, tia l\u1eeda ho\u1eb7c n\u0103ng l\u01b0\u1ee3ng \u0111\u00e1nh l\u1eeda t\u01b0\u01a1ng t\u1ef1, pin s\u1ebd b\u1ecb \u0111\u00e1nh l\u1eeda l\u1ea1i, nh\u01b0 th\u1ec3 hi\u1ec7n \u1edf (g), cho \u0111\u1ebfn khi ng\u1ecdn l\u1eeda t\u1eaft ho\u00e0n to\u00e0n. T\u1eeb k\u1ebft qu\u1ea3 th\u1eed nghi\u1ec7m, c\u00f3 th\u1ec3 th\u1ea5y r\u1eb1ng khi m\u1eb7t b\u00ean c\u1ee7a c\u1ee5m pin lithium qu\u00e1 n\u00f3ng, c\u01b0\u1eddng \u0111\u1ed9 ch\u00e1y c\u1ee7a pin s\u1ebd gi\u1ea3m d\u1ea7n theo kho\u1ea3ng c\u00e1ch t\u0103ng d\u1ea7n v\u00e0 hi\u1ec7n t\u01b0\u1ee3ng \u0111\u00e1nh l\u1eeda l\u1ea1i ng\u1eaft qu\u00e3ng s\u1ebd x\u1ea3y ra nhi\u1ec1u l\u1ea7n.<\/span><\/span><\/p>\n

C\u00e1c cell pin lithium \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i theo chu\u1ed7i v\u00e0 song song \u0111\u1ec3 t\u1ea1o th\u00e0nh m\u1ed9t c\u1ee5m pin trong qu\u00e1 tr\u00ecnh s\u1eed d\u1ee5ng v\u00e0 m\u1ed7i cell pin \u0111\u01b0\u1ee3c qu\u1ea3n l\u00fd th\u00f4ng minh th\u00f4ng qua H\u1ec7 th\u1ed1ng qu\u1ea3n l\u00fd pin (BMS). Sau khi \u0111\u01b0\u1ee3c \u0111\u00e1nh l\u1eeda b\u1eb1ng ngu\u1ed3n nhi\u1ec7t b\u1ee9c x\u1ea1 b\u00ean ngo\u00e0i, c\u1ee5m pin s\u1ebd tr\u1ea3i qua qu\u00e1 tr\u00ecnh ch\u00e1y n\u1ed5 v\u00e0 d\u1eef d\u1ed9i. M\u1ed9t s\u1ed1 cell pin s\u1ebd t\u00e1ch kh\u1ecfi c\u1ee5m pin d\u01b0\u1edbi \u00e1p su\u1ea5t t\u1ea1o ra b\u1edfi c\u00e1c ph\u1ea3n \u1ee9ng b\u00ean trong, b\u1eafn tung t\u00f3e kh\u1eafp n\u01a1i v\u00e0 v\u1eadt li\u1ec7u m\u00e0ng ng\u0103n b\u00ean trong c\u0169ng s\u1ebd tr\u00e0n ra ngo\u00e0i.<\/span><\/span><\/p>\n

Do thi\u1ebft k\u1ebf van an to\u00e0n \u0111i\u1ec7n c\u1ef1c d\u01b0\u01a1ng c\u1ee7a cell pin, khi kh\u00ed \u0111\u01b0\u1ee3c t\u1ea1o ra b\u1edfi c\u00e1c ph\u1ea3n \u1ee9ng h\u00f3a h\u1ecdc b\u00ean trong, \u00e1p su\u1ea5t s\u1ebd r\u00f2 r\u1ec9 ra ngo\u00e0i qua van an to\u00e0n, do \u0111\u00f3 l\u00e0m gi\u1ea3m nguy c\u01a1 h\u01b0 h\u1ecfng th\u00e0nh ngo\u00e0i c\u1ee7a cell pin do \u00e1p su\u1ea5t b\u00ean trong.<\/span><\/span><\/p>\n

\u0110\u1ed1i v\u1edbi m\u1ed9t b\u1ed9 pin lithium, n\u1ebfu m\u1ed9t trong c\u00e1c pin b\u1ecb \u0111\u00e1nh l\u1eeda do nhi\u1ec7t ho\u1eb7c b\u1eaft l\u1eeda do c\u00e1c y\u1ebfu t\u1ed1 b\u00ean ngo\u00e0i, c\u00e1c cell pin lithium xung quanh s\u1ebd ph\u1ea3i ch\u1ecbu s\u1ef1 truy\u1ec1n nhi\u1ec7t t\u1eeb th\u00e0nh pin, ho\u1eb7c c\u1eb7n nhi\u1ec7t \u0111\u1ed9 cao phun ra s\u1ebd ch\u00e1y, ho\u1eb7c b\u1ee9c x\u1ea1 nhi\u1ec7t do ng\u1ecdn l\u1eeda tr\u1ea7n t\u1ea1o ra s\u1ebd \u0111\u1ed1t ch\u00e1y c\u00e1c cell pin xung quanh, m\u1edf r\u1ed9ng th\u00eam v\u00f9ng \u0111\u00e1nh l\u1eeda m\u00e0 kh\u00f4ng l\u00e0m \u0111\u00e1m ch\u00e1y lan r\u1ed9ng ngay l\u1eadp t\u1ee9c do th\u00e0nh pin n\u1ed5. \u0110i\u1ec1u n\u00e0y ch\u1ec9 ra r\u1eb1ng so v\u1edbi m\u1eb7t b\u00ean c\u1ee7a b\u1ed9 pin lithium, \u0111\u00e1y pin (\u0111i\u1ec7n c\u1ef1c \u00e2m) c\u1ee7a n\u00f3 c\u1ea7n \u0111\u01b0\u1ee3c b\u1ea3o v\u1ec7 t\u1ed1t h\u01a1n \u0111\u1ec3 ch\u1ed1ng ch\u00e1y.<\/span><\/span><\/p>\n

Qu\u00e1 tr\u00ecnh lan truy\u1ec1n ch\u00e1y c\u1ee7a b\u1ed9 pin lithium trong \u0111i\u1ec1u ki\u1ec7n qu\u00e1 nhi\u1ec7t tr\u01b0\u1edbc ti\u00ean thay \u0111\u1ed5i theo nhi\u1ec7t \u0111\u1ed9 c\u1ee7a pin. B\u1eb1ng c\u00e1ch \u0111o l\u01b0\u1eddng s\u1ef1 thay \u0111\u1ed5i v\u00e0 ph\u00e2n b\u1ed1 nhi\u1ec7t \u0111\u1ed9 b\u00ean trong b\u1ed9 pin, c\u00f3 th\u1ec3 ph\u00e2n t\u00edch \u0111\u1ecbnh l\u01b0\u1ee3ng h\u00e0nh vi ch\u00e1y c\u1ee7a b\u1ed9 pin lithium. \u0110i\u1ec1u n\u00e0y c\u00f3 \u00fd ngh\u0129a to l\u1edbn \u0111\u1ed1i v\u1edbi c\u00e1ch ki\u1ec3m so\u00e1t \u0111\u00e1m ch\u00e1y t\u1ed1t h\u01a1n v\u00e0 ph\u00e1t tri\u1ec3n c\u00e1c c\u00f4ng ngh\u1ec7 ch\u1eefa ch\u00e1y m\u1edbi v\u00e0 hi\u1ec7u qu\u1ea3.<\/span><\/span><\/p>\n

2.2 Ph\u00e2n b\u1ed1 nhi\u1ec7t \u0111\u1ed9<\/span><\/span><\/span><\/h2>\n

S\u1ef1 thay \u0111\u1ed5i nhi\u1ec7t \u0111\u1ed9 b\u00ean trong c\u1ee7a m\u1ed9t b\u1ed9 pin lithium khi \u0111\u01b0\u1ee3c l\u00e0m n\u00f3ng \u1edf \u0111\u00e1y. T\u1eeb nh\u1eefng thay \u0111\u1ed5i trong \u0111\u01b0\u1eddng cong l\u1ecbch s\u1eed nhi\u1ec7t \u0111\u1ed9, c\u00f3 th\u1ec3 quan s\u00e1t th\u1ea5y ba giai \u0111o\u1ea1n kh\u00e1c nhau c\u1ee7a qu\u00e1 tr\u00ecnh ph\u00e1t tri\u1ec3n nhi\u1ec7t \u0111\u1ed9 m\u1ea5t ki\u1ec3m so\u00e1t c\u1ee7a pin, \u0111i\u1ec1u n\u00e0y ph\u00f9 h\u1ee3p v\u1edbi k\u1ebft qu\u1ea3 thu \u0111\u01b0\u1ee3c t\u1eeb ph\u00e2n t\u00edch hi\u1ec7n t\u01b0\u1ee3ng ch\u00e1y \u1edf ph\u1ea7n tr\u01b0\u1edbc.<\/span><\/span><\/p>\n

Trong giai \u0111o\u1ea1n gia nhi\u1ec7t, nhi\u1ec7t \u0111\u1ed9 t\u0103ng ch\u1eadm v\u00e0 c\u00f3 th\u1ec3 th\u1ea5y nhi\u1ec7t \u0111\u1ed9 c\u1ee7a T 1 t\u0103ng nhanh h\u01a1n c\u00e1c nhi\u1ec7t \u0111\u1ed9 kh\u00e1c. V\u1ecb tr\u00ed \u0111o \u0111\u01b0\u1ee3c c\u1ee7a n\u00f3 n\u1eb1m ngay t\u1ea1i khu v\u1ef1c trung t\u00e2m c\u1ee7a b\u1ed9 pin, n\u01a1i n\u00f3 nh\u1eadn \u0111\u01b0\u1ee3c nhi\u1ec1u nhi\u1ec7t nh\u1ea5t. Sau khi van an to\u00e0n d\u01b0\u01a1ng c\u1ee7a cell pin \u0111\u01b0\u1ee3c m\u1edf, kh\u00f3i tr\u1eafng b\u1ed1c l\u00ean, cho bi\u1ebft ph\u1ea3n \u1ee9ng d\u1eef d\u1ed9i \u0111ang x\u1ea3y ra b\u00ean trong cell pin, t\u1ea1o ra kh\u00ed.<\/span><\/span><\/p>\n

Khi nhi\u1ec7t \u0111\u1ed9 ti\u1ebfp t\u1ee5c t\u0103ng, kh\u00ed d\u1ec5 ch\u00e1y \u0111\u01b0\u1ee3c t\u1ea1o ra s\u1ebd k\u00edch ho\u1ea1t qu\u00e1 tr\u00ecnh \u0111\u00e1nh l\u1eeda c\u1ee7a cell pin. T\u1ea1i th\u1eddi \u0111i\u1ec3m n\u00e0y, \u0111\u01b0\u1eddng cong nhi\u1ec7t \u0111\u1ed9 cho th\u1ea5y m\u1ed9t \u0111i\u1ec3m ngo\u1eb7t h\u01b0\u1edbng l\u00ean m\u1ea1nh. T\u1ea1i th\u1eddi \u0111i\u1ec3m \u0111\u00e1nh l\u1eeda, nhi\u1ec7t \u0111\u1ed9 c\u1ee7a T 1 l\u00e0 kho\u1ea3ng 139 \u2103, \u0111\u1ed3ng th\u1eddi, nhi\u1ec7t \u0111\u1ed9 t\u1ea1i v\u1ecb tr\u00ed T 3 ngay l\u1eadp t\u1ee9c t\u0103ng l\u00ean, nguy\u00ean nh\u00e2n l\u00e0 do s\u1ef1 lan truy\u1ec1n c\u1ee7a ng\u1ecdn l\u1eeda. So v\u1edbi c\u00e1c v\u1ecb tr\u00ed T 2 v\u00e0 T 3, kho\u1ea3ng c\u00e1ch theo \u0111\u01b0\u1eddng th\u1eb3ng gi\u1eefa T 4 v\u00e0 T 1 l\u00e0 xa nh\u1ea5t. N\u1ebfu t\u00ednh to\u00e1n d\u1ef1a tr\u00ean k\u00edch th\u01b0\u1edbc t\u1ed1i \u0111a c\u1ee7a cell pin, kho\u1ea3ng c\u00e1ch gi\u1eefa T 4 v\u00e0 T 1 l\u00e0 kho\u1ea3ng 99 mm, ch\u00eanh l\u1ec7ch th\u1eddi gian \u0111\u00e1nh l\u1eeda l\u00e0 89 gi\u00e2y v\u00e0 t\u1ed1c \u0111\u1ed9 lan truy\u1ec1n ch\u00e1y l\u00e0 kho\u1ea3ng 1,1 mm\/gi\u00e2y.<\/span><\/span><\/p>\n

Sau khi m\u1ed9t b\u1ed9 pin lithium b\u1eaft l\u1eeda, n\u00f3 s\u1ebd tr\u1ea3i qua c\u00e1c hi\u1ec7n t\u01b0\u1ee3ng nh\u01b0 phun v\u00e0 n\u1ed5, trong \u0111\u00f3 nhi\u1ec7t \u0111\u1ed9 s\u1ebd ti\u1ebfp t\u1ee5c t\u0103ng v\u00e0 cu\u1ed1i c\u00f9ng \u0111i v\u00e0o giai \u0111o\u1ea1n \u0111\u1ed1t ch\u00e1y to\u00e0n b\u1ed9. Nhi\u1ec7t \u0111\u1ed9 \u0111\u1ed1t ch\u00e1y t\u1ed1i \u0111a c\u1ee7a b\u1ed9 pin v\u01b0\u1ee3t qu\u00e1 700 \u2103.<\/span><\/span><\/p>\n

Khi m\u1eb7t b\u00ean c\u1ee7a b\u1ed9 pin lithium \u0111\u01b0\u1ee3c l\u00e0m n\u00f3ng, v\u1ecb tr\u00ed \u0111o c\u1ee7a c\u1eb7p nhi\u1ec7t \u0111i\u1ec7n \u0111\u00e3 \u0111\u01b0\u1ee3c \u0111i\u1ec1u ch\u1ec9nh, s\u1eafp x\u1ebfp t\u1eeb g\u1ea7n \u0111\u1ebfn xa so v\u1edbi v\u1ecb tr\u00ed ngu\u1ed3n nhi\u1ec7t b\u1ee9c x\u1ea1 v\u00e0 \u0111\u01b0\u1eddng cong l\u1ecbch s\u1eed nhi\u1ec7t \u0111\u1ed9 \u0111i\u1ec3n h\u00ecnh \u0111\u01b0\u1ee3c \u0111o trong th\u00ed nghi\u1ec7m \u0111\u00e3 \u0111\u01b0\u1ee3c \u0111i\u1ec1u ch\u1ec9nh.<\/span><\/span><\/p>\n

So v\u1edbi \u0111i\u1ec1u ki\u1ec7n gia nhi\u1ec7t d\u01b0\u1edbi \u0111\u00e1y, c\u00f3 m\u1ed9t s\u1ed1 kh\u00e1c bi\u1ec7t \u0111\u00e1ng k\u1ec3 v\u1ec1 ph\u00e2n b\u1ed1 nhi\u1ec7t \u0111\u1ed9 khi m\u1eb7t b\u00ean c\u1ee7a b\u1ed9 pin lithium \u0111\u01b0\u1ee3c gia nhi\u1ec7t. M\u1eb7c d\u00f9 c\u00f3 m\u1ed9t s\u1ed1 \u0111\u1ec9nh nhi\u1ec7t \u0111\u1ed9, \u0111i\u1ec1u n\u00e0y c\u00f3 ngh\u0129a l\u00e0 n\u00f3 \u0111ang \u1edf tr\u1ea1ng th\u00e1i ch\u00e1y ng\u1ecdn l\u1eeda tr\u1ea7n t\u1ea1i th\u1eddi \u0111i\u1ec3m n\u00e0y, nh\u01b0ng s\u1ef1 ph\u00e2n b\u1ed1 \u0111\u1ec9nh nhi\u1ec7t \u0111\u1ed9 \u1edf ch\u1ebf \u0111\u1ed9 gia nhi\u1ec7t d\u01b0\u1edbi \u0111\u00e1y l\u1ea1i di\u1ec5n ra trong m\u1ed9t kho\u1ea3ng th\u1eddi gian d\u00e0i h\u01a1n. \u0110i\u1ec1u n\u00e0y ch\u1ee7 y\u1ebfu l\u00e0 do \u0111i\u1ec1u ki\u1ec7n gia nhi\u1ec7t c\u1ee7a b\u1ed9 pin lithium kh\u00e1c nhau trong hai \u0111i\u1ec1u ki\u1ec7n l\u00e0m vi\u1ec7c kh\u00e1c nhau.<\/span><\/span><\/p>\n

Khi \u0111\u00e1y \u0111\u01b0\u1ee3c l\u00e0m n\u00f3ng, \u0111i\u1ec7n c\u1ef1c \u00e2m c\u1ee7a cell pin lithium li\u00ean t\u1ee5c \u0111\u01b0\u1ee3c l\u00e0m n\u00f3ng v\u00e0 h\u1ea7u h\u1ebft c\u00e1c cell pin \u0111\u01b0\u1ee3c l\u00e0m n\u00f3ng tr\u1ef1c ti\u1ebfp s\u1ebd \u0111\u1ea9y nhanh c\u00e1c ph\u1ea3n \u1ee9ng h\u00f3a h\u1ecdc trong kho\u1ea3ng th\u1eddi gian t\u1eadp trung h\u01a1n. Sau khi m\u1ea5t ki\u1ec3m so\u00e1t nhi\u1ec7t, ch\u00fang s\u1ebd b\u1eaft l\u1eeda v\u00e0 cu\u1ed1i c\u00f9ng bi\u1ec3u hi\u1ec7n hi\u1ec7n t\u01b0\u1ee3ng ch\u00e1y to\u00e0n b\u1ed9. Tuy nhi\u00ean, khi \u0111\u01b0\u1ee3c l\u00e0m n\u00f3ng \u1edf b\u00ean c\u1ea1nh, v\u1ecb tr\u00ed xa ngu\u1ed3n nhi\u1ec7t h\u01a1n, ch\u1eb3ng h\u1ea1n nh\u01b0 T 4, s\u1ebd nh\u1eadn \u0111\u01b0\u1ee3c \u00edt nhi\u1ec7t h\u01a1n v\u00e0 nhi\u1ec7t \u0111\u1ed9 s\u1ebd kh\u00f4ng t\u0103ng \u0111\u00e1ng k\u1ec3 cho \u0111\u1ebfn khi k\u1ebft th\u00fac qu\u00e1 tr\u00ecnh \u0111\u1ed1t ch\u00e1y, \u0110i\u1ec1u n\u00e0y ch\u1ee7 y\u1ebfu l\u00e0 do khi c\u1ee5m pin \u0111\u01b0\u1ee3c l\u00e0m n\u00f3ng \u1edf b\u00ean c\u1ea1nh, n\u00f3 bi\u1ec3u hi\u1ec7n ki\u1ec3u ch\u00e1y lan t\u1eeb ph\u1ea3i sang tr\u00e1i v\u00e0 s\u1ebd c\u00f3 hi\u1ec7n t\u01b0\u1ee3ng d\u1eadp t\u1eaft v\u00e0 \u0111\u00e1nh l\u1eeda l\u1ea1i \u1edf gi\u1eefa. N\u1ebfu kh\u00f4ng c\u00f3 qu\u00e1 tr\u00ecnh gia nhi\u1ec7t b\u00ean ngo\u00e0i li\u00ean t\u1ee5c, h\u00ecnh th\u1ee9c ch\u00e1y n\u00e0y kh\u00f3 \u0111\u1ea1t \u0111\u01b0\u1ee3c s\u1ef1 lan t\u1ecfa ch\u00e1y li\u00ean t\u1ee5c.<\/span><\/span><\/p>\n

Ngo\u00e0i ra, c\u00f3 th\u1ec3 quan s\u00e1t th\u1ea5y nhi\u1ec7t \u0111\u1ed9 \u0111\u00e1nh l\u1eeda t\u1ea1i T 1 trong qu\u00e1 tr\u00ecnh \u0111\u00e1nh l\u1eeda l\u00e0 kho\u1ea3ng 90 \u2103, th\u1ea5p h\u01a1n khi \u0111i\u1ec7n c\u1ef1c \u00e2m d\u01b0\u1edbi c\u00f9ng \u0111\u01b0\u1ee3c l\u00e0m n\u00f3ng v\u00e0 nhi\u1ec7t \u0111\u1ed9 cao nh\u1ea5t sau khi \u0111\u00e1nh l\u1eeda c\u0169ng v\u00e0o kho\u1ea3ng 550 \u2103, th\u1ea5p h\u01a1n \u0111\u00e1ng k\u1ec3 so v\u1edbi khi l\u00e0m n\u00f3ng \u0111\u00e1y. K\u1ebft qu\u1ea3 ph\u00e2n t\u00edch nhi\u1ec7t \u0111\u1ed9 tr\u00ean cho th\u1ea5y so v\u1edbi gia nhi\u1ec7t b\u00ean, \u0111i\u1ec7n c\u1ef1c \u00e2m \u1edf d\u01b0\u1edbi c\u00f9ng c\u1ee7a b\u1ed9 pin lithium b\u1ecb ch\u00e1y nghi\u00eam tr\u1ecdng h\u01a1n do nhi\u1ec7t \u0111\u1ed9 t\u0103ng \u0111\u1ed9t bi\u1ebfn khi \u0111\u01b0\u1ee3c l\u00e0m n\u00f3ng, bi\u1ec3u hi\u1ec7n c\u1ee5 th\u1ec3 \u1edf di\u1ec7n t\u00edch lan truy\u1ec1n ch\u00e1y l\u1edbn h\u01a1n v\u00e0 nhi\u1ec7t \u0111\u1ed9 ng\u1ecdn l\u1eeda cao h\u01a1n.<\/span><\/span><\/p>\n

Nhi\u1ec7t \u0111\u1ed9 thay \u0111\u1ed5i trong \u0111i\u1ec1u ki\u1ec7n l\u00e0m vi\u1ec7c 3, so v\u1edbi \u0111i\u1ec1u ki\u1ec7n l\u00e0m vi\u1ec7c 1, \u0111\u1ec1u l\u00e0 gia nhi\u1ec7t t\u1eeb d\u01b0\u1edbi l\u00ean, \u0111i\u1ec3m kh\u00e1c bi\u1ec7t l\u00e0 c\u00f4ng su\u1ea5t gia nhi\u1ec7t \u0111\u00e3 t\u0103ng l\u00ean 2 kW. \u0110\u1ed3ng th\u1eddi, \u1edf gi\u1eefa qu\u00e1 tr\u00ecnh \u0111\u1ed1t ch\u00e1y, s\u01b0\u01a1ng m\u00f9 n\u01b0\u1edbc \u0111\u01b0\u1ee3c b\u1eadt \u0111\u1ec3 d\u1eadp t\u1eaft \u0111\u00e1m ch\u00e1y v\u00e0 ki\u1ec3m tra kh\u1ea3 n\u0103ng d\u1eadp l\u1eeda v\u00e0 l\u00e0m m\u00e1t c\u1ee7a n\u00f3. C\u00f3 th\u1ec3 th\u1ea5y r\u1eb1ng khi c\u00f4ng su\u1ea5t gia nhi\u1ec7t t\u0103ng l\u00ean, th\u1eddi gian \u0111\u00e1nh l\u1eeda \u0111\u01b0\u1ee3c \u0111\u1ea9y nhanh h\u01a1n. L\u00fd do r\u1ea5t r\u00f5 r\u00e0ng. Nhi\u1ec7t b\u00ean ngo\u00e0i nh\u1eadn \u0111\u01b0\u1ee3c c\u00e0ng cao, ph\u1ea3n \u1ee9ng h\u00f3a h\u1ecdc b\u00ean trong cell pin s\u1ebd c\u00e0ng m\u1ea1nh v\u00e0 s\u1ef1 m\u1ea5t ki\u1ec3m so\u00e1t nhi\u1ec7t s\u1ebd d\u1eabn \u0111\u1ebfn th\u1eddi gian \u0111\u00e1nh l\u1eeda ng\u1eafn h\u01a1n.<\/span><\/span><\/p>\n

Tuy nhi\u00ean, trong qu\u00e1 tr\u00ecnh \u0111\u00e1nh l\u1eeda, kh\u00f4ng c\u00f3 s\u1ef1 kh\u00e1c bi\u1ec7t \u0111\u00e1ng k\u1ec3 v\u1ec1 nhi\u1ec7t \u0111\u1ed9 gi\u1eefa T 1 v\u00e0 \u0111i\u1ec1u ki\u1ec7n v\u1eadn h\u00e0nh c\u00f4ng su\u1ea5t th\u1ea5p h\u01a1n, m\u00e0 l\u00e0 gi\u1eefa 120 v\u00e0 139 \u2103. Ngo\u00e0i ra, nhi\u1ec7t \u0111\u1ed9 t\u1ea1i c\u00e1c v\u1ecb tr\u00ed T 2, T 3 v\u00e0 T 4 trong \u0111i\u1ec1u ki\u1ec7n v\u1eadn h\u00e0nh 3 th\u1ea5p h\u01a1n nhi\u1ec7t \u0111\u1ed9 \u1edf c\u00f4ng su\u1ea5t gia nhi\u1ec7t 1 kW. \u0110i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 ch\u1ec9 ra r\u1eb1ng d\u01b0\u1edbi t\u00e1c \u0111\u1ed9ng c\u1ee7a nhi\u1ec7t b\u1ee9c x\u1ea1 b\u00ean ngo\u00e0i, b\u1ed9 pin lithium s\u1ebd ch\u1ec9 b\u1eaft l\u1eeda v\u00e0 ch\u00e1y khi nhi\u1ec7t \u0111\u1ed9 t\u0103ng \u0111\u1ebfn m\u1ed9t ph\u1ea1m vi c\u1ee5 th\u1ec3.<\/span><\/span><\/p>\n

C\u1ea7n l\u01b0u \u00fd r\u1eb1ng nhi\u1ec7t \u0111\u1ed9 \u0111\u00e1nh l\u1eeda \u0111\u01b0\u1ee3c li\u1ec7t k\u00ea trong B\u1ea3ng 2 c\u00f3 th\u1ec3 kh\u00f4ng ph\u1ea3i l\u00e0 nhi\u1ec7t \u0111\u1ed9 \u0111\u00e1nh l\u1eeda t\u1ed1i thi\u1ec3u thu \u0111\u01b0\u1ee3c do \u0111i\u1ec3m thu th\u1eadp b\u1ecb h\u1ea1n ch\u1ebf. Tuy nhi\u00ean, \u1edf m\u1ed9t m\u1ee9c \u0111\u1ed9 n\u00e0o \u0111\u00f3, \u0111i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 ch\u1ee9ng minh s\u1ef1 c\u1ea7n thi\u1ebft c\u1ee7a vi\u1ec7c theo d\u00f5i th\u1eddi gian th\u1ef1c c\u00e1c thay \u0111\u1ed5i v\u1ec1 nhi\u1ec7t \u0111\u1ed9 t\u0103ng c\u1ee7a t\u1eebng cell pin th\u00f4ng qua h\u1ec7 th\u1ed1ng qu\u1ea3n l\u00fd pin. B\u1eb1ng c\u00e1ch thi\u1ebft l\u1eadp ng\u01b0\u1ee1ng nhi\u1ec7t \u0111\u1ed9, khi nhi\u1ec7t \u0111\u1ed9 c\u1ee5c b\u1ed9 t\u0103ng c\u1ee7a c\u1ee5m pin lithium v\u01b0\u1ee3t qu\u00e1 gi\u00e1 tr\u1ecb n\u00e0y, c\u00e1c bi\u1ec7n ph\u00e1p c\u1ea3nh b\u00e1o v\u00e0 ph\u00f2ng ng\u1eeba s\u1ebd \u0111\u01b0\u1ee3c kh\u1edfi t\u1ea1o \u0111\u1ec3 ng\u0103n to\u00e0n b\u1ed9 c\u1ee5m pin b\u1eaft l\u1eeda do nhi\u1ec7t \u0111\u1ed9 t\u0103ng.<\/span><\/span><\/p>\n

To\u00e0n b\u1ed9 th\u1eddi gian ch\u00e1y l\u00e0 218 gi\u00e2y t\u1eeb l\u00fac b\u1eaft \u0111\u1ea7u \u0111\u00e1nh l\u1eeda \u1edf t = 780 gi\u00e2y \u0111\u1ebfn l\u00fac b\u1eaft \u0111\u1ea7u phun s\u01b0\u01a1ng n\u01b0\u1edbc \u1edf t = 998 gi\u00e2y. Sau khi phun s\u01b0\u01a1ng n\u01b0\u1edbc \u0111\u1ec3 d\u1eadp t\u1eaft \u0111\u00e1m ch\u00e1y, nhi\u1ec7t \u0111\u1ed9 \u1edf T 3 v\u00e0 T 4 gi\u1ea3m nhanh ch\u00f3ng. Sau khi phun li\u00ean t\u1ee5c trong 30 gi\u00e2y, nhi\u1ec7t \u0111\u1ed9 gi\u1ea3m xu\u1ed1ng d\u01b0\u1edbi 100 \u2103. Sau khi ng\u1eebng phun, kh\u00f4ng x\u1ea3y ra ch\u00e1y l\u1ea1i. K\u1ebft qu\u1ea3 th\u1ef1c nghi\u1ec7m cho th\u1ea5y phun s\u01b0\u01a1ng n\u01b0\u1edbc c\u00f3 th\u1ec3 d\u1eadp t\u1eaft \u0111\u00e1m ch\u00e1y v\u00e0 l\u00e0m m\u00e1t hi\u1ec7u qu\u1ea3, ng\u0103n ng\u1eeba ch\u00e1y b\u00f9ng ph\u00e1t tr\u1edf l\u1ea1i.<\/span><\/span><\/p>\n

So v\u1edbi ch\u1eefa ch\u00e1y b\u1eb1ng kh\u00ed, s\u01b0\u01a1ng n\u01b0\u1edbc c\u00f3 th\u1ec3 l\u00e0 m\u1ed9t ch\u1ea5t ch\u1eefa ch\u00e1y t\u1ed1t c\u00f3 th\u1ec3 li\u00ean t\u1ee5c l\u00e0m m\u00e1t pin lithium-ion khi ch\u00e1y. Tuy nhi\u00ean, c\u0169ng c\u1ea7n l\u01b0u \u00fd r\u1eb1ng trong c\u00e1c \u1ee9ng d\u1ee5ng th\u1ef1c t\u1ebf, v\u1ebft n\u01b0\u1edbc do s\u01b0\u01a1ng n\u01b0\u1edbc t\u1ea1o ra c\u00f3 th\u1ec3 g\u00e2y h\u01b0 h\u1ecfng thi\u1ebft b\u1ecb r\u1ed9ng r\u00e3i v\u00e0 h\u01b0 h\u1ecfng th\u1ee9 c\u1ea5p. Ngo\u00e0i ra, s\u01b0\u01a1ng n\u01b0\u1edbc c\u00f3 \u0111\u01b0\u1eddng k\u00ednh gi\u1ecdt l\u1edbn c\u0169ng c\u00f3 th\u1ec3 g\u00e2y ra hi\u1ec7n t\u01b0\u1ee3ng \u0111o\u1ea3n m\u1ea1ch ho\u1eb7c ph\u00f3ng \u0111i\u1ec7n pin, l\u00e0m tr\u1ea7m tr\u1ecdng th\u00eam t\u00ecnh tr\u1ea1ng m\u1ea5t ki\u1ec3m so\u00e1t nhi\u1ec7t v\u00e0 t\u0103ng quy m\u00f4 ch\u00e1y. Do \u0111\u00f3, vi\u1ec7c l\u1ef1a ch\u1ecdn ph\u01b0\u01a1ng ph\u00e1p ch\u1eefa ch\u00e1y c\u1ee5 th\u1ec3 c\u1ea7n \u0111\u01b0\u1ee3c ph\u00e2n t\u00edch d\u1ef1a tr\u00ean \u0111\u1ed1i t\u01b0\u1ee3ng ch\u1eefa ch\u00e1y. V\u00e0 c\u01a1 s\u1edf cho c\u00e1c \u1ee9ng d\u1ee5ng c\u1ee5 th\u1ec3 n\u00e0y l\u00e0 d\u1eef li\u1ec7u th\u1ef1c nghi\u1ec7m, v\u00ec v\u1eady r\u1ea5t c\u1ea7n ph\u1ea3i ti\u1ebfn h\u00e0nh th\u00eam c\u00e1c th\u00ed nghi\u1ec7m ch\u1eefa ch\u00e1y quy m\u00f4 l\u1edbn h\u01a1n, \u0111\u1eb7c bi\u1ec7t l\u00e0 c\u00e1c th\u00ed nghi\u1ec7m ch\u1eefa ch\u00e1y quy m\u00f4 l\u1edbn, \u0111\u1ec3 nghi\u00ean c\u1ee9u c\u00e1c \u0111\u1eb7c t\u00ednh ch\u00e1y c\u1ee7a c\u1ee5m pin lithium v\u00e0 ki\u1ec3m tra hi\u1ec7u qu\u1ea3 c\u1ee7a c\u00e1c ph\u01b0\u01a1ng ph\u00e1p ch\u1eefa ch\u00e1y kh\u00e1c nhau.<\/span><\/span><\/p>\n

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

B\u00e0i vi\u1ebft n\u00e0y ti\u1ebfn h\u00e0nh th\u1eed nghi\u1ec7m \u0111\u1ed1t ch\u00e1y tr\u00ean b\u1ed9 pin lithium-ion 18650 ba th\u00e0nh ph\u1ea7n \u0111\u01b0\u1ee3c t\u1ea1o ra b\u1eb1ng c\u00e1ch nung n\u00f3ng v\u00e0 thu \u0111\u01b0\u1ee3c nh\u1eefng k\u1ebft lu\u1eadn sau.<\/span><\/span><\/p>\n

(1) So v\u1edbi qu\u00e1 nhi\u1ec7t \u1edf b\u00ean c\u1ea1nh, khi \u0111i\u1ec7n c\u1ef1c \u00e2m \u1edf \u0111\u00e1y c\u1ee7a b\u1ed9 pin lithium qu\u00e1 nhi\u1ec7t, m\u1ee9c \u0111\u1ed9 ch\u00e1y s\u1ebd nghi\u00eam tr\u1ecdng h\u01a1n v\u00e0 pin s\u1ebd li\u00ean t\u1ee5c phun v\u00e0 ch\u00e1y. \u0110\u1ed1i v\u1edbi qu\u00e1 nhi\u1ec7t \u1edf b\u00ean c\u1ea1nh, c\u01b0\u1eddng \u0111\u1ed9 ch\u00e1y trong b\u1ed9 pin lithium s\u1ebd y\u1ebfu \u0111i khi kho\u1ea3ng c\u00e1ch t\u1eeb ngu\u1ed3n nhi\u1ec7t t\u0103ng l\u00ean v\u00e0 s\u1ebd x\u1ea3y ra hi\u1ec7n t\u01b0\u1ee3ng \u0111\u00e1nh l\u1eeda l\u1ea1i nhi\u1ec1u l\u1ea7n. Ngo\u00e0i ra, c\u00f4ng su\u1ea5t ngu\u1ed3n nhi\u1ec7t t\u0103ng s\u1ebd r\u00fat ng\u1eafn th\u1eddi gian \u0111\u00e1nh l\u1eeda c\u1ee7a b\u1ed9 pin lithium v\u00e0 t\u0103ng c\u01b0\u1eddng \u0111\u1ed9 ch\u00e1y c\u1ee7a ch\u00fang.<\/span><\/span><\/p>\n

(2) K\u1ebft qu\u1ea3 th\u1eed nghi\u1ec7m cho th\u1ea5y nhi\u1ec7t \u0111\u1ed9 <\/span><\/span>tho\u00e1t nhi\u1ec7t<\/span><\/span><\/a> c\u1ee7a \u0111i\u1ec7n c\u1ef1c \u00e2m d\u01b0\u1edbi c\u00f9ng c\u1ee7a b\u1ed9 pin lithium ba th\u00e0nh ph\u1ea7n khi qu\u00e1 nhi\u1ec7t l\u00e0 t\u1eeb 120~139 \u2103. Trong nh\u1eefng \u0111i\u1ec1u ki\u1ec7n n\u00e0y, nhi\u1ec7t \u0111\u1ed9 ch\u00e1y t\u1ed1i \u0111a s\u1ebd t\u0103ng theo c\u00f4ng su\u1ea5t ngu\u1ed3n nhi\u1ec7t t\u0103ng v\u00e0 nhi\u1ec7t \u0111\u1ed9 t\u1ed1i \u0111a c\u00f3 th\u1ec3 \u0111\u1ea1t t\u1edbi 800 \u2103.<\/span><\/span><\/p>\n

(3) Phun s\u01b0\u01a1ng n\u01b0\u1edbc tinh khi\u1ebft v\u00e0o b\u1ed9 pin lithium \u0111ang ch\u00e1y c\u00f3 th\u1ec3 d\u1eadp t\u1eaft \u0111\u00e1m ch\u00e1y hi\u1ec7u qu\u1ea3 v\u00e0 gi\u1ea3m nhi\u1ec7t \u0111\u1ed9. Phun li\u00ean t\u1ee5c c\u00f3 th\u1ec3 l\u00e0m gi\u1ea3m nhi\u1ec7t \u0111\u1ed9 pin xu\u1ed1ng d\u01b0\u1edbi nhi\u1ec7t \u0111\u1ed9 t\u1edbi h\u1ea1n m\u00e0 kh\u00f4ng c\u1ea7n \u0111\u00e1nh l\u1eeda l\u1ea1i. \u0110i\u1ec1u n\u00e0y cho th\u1ea5y phun s\u01b0\u01a1ng n\u01b0\u1edbc c\u00f3 th\u1ec3 l\u00e0 ph\u01b0\u01a1ng ph\u00e1p ch\u1eefa ch\u00e1y hi\u1ec7u qu\u1ea3 \u0111\u1ed1i v\u1edbi \u0111\u00e1m ch\u00e1y pin lithium-ion, nh\u01b0ng vi\u1ec7c \u00e1p d\u1ee5ng n\u00f3 c\u00f3 th\u1ec3 g\u00e2y ra thi\u1ec7t h\u1ea1i th\u1ee9 c\u1ea5p nh\u01b0 \u00f4 nhi\u1ec5m n\u01b0\u1edbc v\u00e0 ph\u00f3ng \u0111i\u1ec7n ng\u1eafn m\u1ea1ch, c\u1ea7n ph\u1ea3i l\u1ef1a ch\u1ecdn c\u1ea9n th\u1eadn d\u1ef1a tr\u00ean nhu c\u1ea7u ch\u1eefa ch\u00e1y.<\/span><\/span><\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

2.1 Hi\u1ec7n t\u01b0\u1ee3ng ch\u00e1y Khi \u0111\u01b0\u1ee3c l\u00e0m n\u00f3ng t\u1eeb b\u00ean d\u01b0\u1edbi, qu\u00e1 tr\u00ecnh \u0111\u1ed1t ch\u00e1y th\u00f4ng th\u01b0\u1eddng c\u1ee7a pack pin lithium-ion c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c chia th\u00e0nh s\u00e1u giai \u0111o\u1ea1n sau d\u1ef1a tr\u00ean m\u1ee9c \u0111\u1ed9 nghi\u00eam tr\u1ecdng c\u1ee7a qu\u00e1 tr\u00ecnh \u0111\u1ed1t ch\u00e1y. (1) Giai \u0111o\u1ea1n gia nhi\u1ec7t. Sau khi l\u00f2 nung li\u00ean t\u1ee5c l\u00e0m n\u00f3ng \u0111i\u1ec7n<\/p>\n","protected":false},"author":1,"featured_media":19610,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[88],"tags":[],"class_list":["post-19609","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\/19609","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=19609"}],"version-history":[{"count":5,"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/posts\/19609\/revisions"}],"predecessor-version":[{"id":21934,"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/posts\/19609\/revisions\/21934"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/media\/19610"}],"wp:attachment":[{"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/media?parent=19609"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/categories?post=19609"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/tags?post=19609"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}