{"id":19692,"date":"2023-06-08T09:29:08","date_gmt":"2023-06-08T09:29:08","guid":{"rendered":"http:\/\/dgbellvietnam.com\/temperature-test-for-aviation-lithium-battery\/"},"modified":"2024-10-21T20:35:14","modified_gmt":"2024-10-21T13:35:14","slug":"temperature-test-for-aviation-lithium-battery","status":"publish","type":"post","link":"https:\/\/dgbellvietnam.com\/en\/temperature-test-for-aviation-lithium-battery\/","title":{"rendered":"Th\u1eed nghi\u1ec7m nhi\u1ec7t \u0111\u1ed9 cho pin lithium h\u00e0ng kh\u00f4ng"},"content":{"rendered":"
\n

Pin lithium l\u00e0 m\u1ed9t trong nh\u1eefng ngu\u1ed3n n\u0103ng l\u01b0\u1ee3ng kh\u00f4ng th\u1ec3 thi\u1ebfu trong ng\u00e0nh h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5 ng\u00e0y nay, th\u01b0\u1eddng \u0111\u00f3ng vai tr\u00f2 l\u00e0 ngu\u1ed3n n\u0103ng l\u01b0\u1ee3ng d\u1ef1 ph\u00f2ng cho nhi\u1ec1u thi\u1ebft b\u1ecb m\u00e1y bay kh\u1edfi \u0111\u1ed9ng, li\u00ean l\u1ea1c v\u00e0 \u1ee9ng ph\u00f3 kh\u1ea9n c\u1ea5p. Ch\u00fang l\u00e0 th\u00e0nh ph\u1ea7n quan tr\u1ecdng c\u1ee7a ph\u01b0\u01a1ng ti\u1ec7n h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5. Tuy nhi\u00ean, trong qu\u00e1 tr\u00ecnh ho\u1ea1t \u0111\u1ed9ng b\u00ecnh th\u01b0\u1eddng, pin lithium r\u1ea5t nh\u1ea1y c\u1ea3m v\u1edbi nhi\u1ec7t \u0111\u1ed9 m\u00f4i tr\u01b0\u1eddng v\u00e0 t\u00e1c \u0111\u1ed9ng c\u1ee7a nhi\u1ec7t \u0111\u1ed9 r\u1ea5t quan tr\u1ecdng trong qu\u00e1 tr\u00ecnh s\u1eed d\u1ee5ng pin theo chu k\u1ef3, nh\u01b0ng l\u1ea1i d\u1ec5 b\u1ecb b\u1ecf qua.<\/span><\/span><\/p>\n

Dung l\u01b0\u1ee3ng pin v\u00e0 \u0111\u1eb7c t\u00ednh s\u1ea1c v\u00e0 x\u1ea3 s\u1ebd thay \u0111\u1ed5i theo nhi\u1ec7t \u0111\u1ed9, nhi\u1ec7t \u0111\u1ed9 cao hay th\u1ea5p s\u1ebd \u1ea3nh h\u01b0\u1edfng nghi\u00eam tr\u1ecdng \u0111\u1ebfn hi\u1ec7u su\u1ea5t v\u00e0 tu\u1ed5i th\u1ecd c\u1ee7a pin. Do pin lithium axit coban h\u00e0ng kh\u00f4ng ho\u1ea1t \u0111\u1ed9ng l\u00e2u d\u00e0i trong m\u00f4i tr\u01b0\u1eddng b\u1ea5t l\u1ee3i nh\u01b0 \u0111i\u1ec7n \u00e1p th\u1ea5p v\u00e0 nhi\u1ec7t \u0111\u1ed9 th\u1ea5p, \u0111i\u1ec1u n\u00e0y ch\u1eafc ch\u1eafn s\u1ebd d\u1eabn \u0111\u1ebfn tu\u1ed5i th\u1ecd chu k\u1ef3 c\u1ee7a pin lithium b\u1ecb r\u00fat ng\u1eafn, c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn t\u00ecnh tr\u1ea1ng pin b\u1ecb lo\u1ea1i b\u1ecf ho\u1eb7c t\u1ed5n th\u1ea5t kh\u00f4ng th\u1ec3 \u0111o\u00e1n tr\u01b0\u1edbc. Do \u0111\u00f3, c\u1ea7n ph\u1ea3i nghi\u00ean c\u1ee9u \u0111\u1eb7c t\u00ednh nhi\u1ec7t \u0111\u1ed9 c\u1ee7a pin lithium oxit coban h\u00e0ng kh\u00f4ng.<\/span><\/span><\/p>\n

B\u00e0i vi\u1ebft n\u00e0y s\u1ebd \u0111i s\u00e2u v\u00e0o nh\u1eefng thay \u0111\u1ed5i v\u1ec1 dung l\u01b0\u1ee3ng pin v\u00e0 \u0111\u1eb7c t\u00ednh x\u1ea3 \u0111i\u1ec7n c\u1ee7a pin lithium coban oxit trong c\u00e1c \u0111i\u1ec1u ki\u1ec7n nhi\u1ec7t \u0111\u1ed9 kh\u00e1c nhau. Th\u00f4ng qua c\u00e1c th\u00ed nghi\u1ec7m, nh\u1eefng thay \u0111\u1ed5i v\u1ec1 dung l\u01b0\u1ee3ng pin v\u00e0 \u0111\u1eb7c t\u00ednh x\u1ea3 \u0111i\u1ec7n c\u1ee7a pin lithium coban oxit \u1edf c\u00e1c nhi\u1ec7t \u0111\u1ed9 kh\u00e1c nhau s\u1ebd \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh, cung c\u1ea5p c\u01a1 s\u1edf l\u00fd thuy\u1ebft \u0111\u1ec3 \u01b0\u1edbc t\u00ednh SOC c\u1ee7a pin lithium coban oxit \u1edf c\u00e1c nhi\u1ec7t \u0111\u1ed9 kh\u00e1c nhau.<\/span><\/span><\/p>\n

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

1.1 \u0110\u1ed1i t\u01b0\u1ee3ng nghi\u00ean c\u1ee9u v\u00e0 <\/span><\/span>thi\u1ebft b\u1ecb th\u1eed nghi\u1ec7m<\/span><\/span><\/a><\/strong><\/span><\/h2>\n

\u0110\u1ed1i t\u01b0\u1ee3ng th\u1eed nghi\u1ec7m l\u00e0 pin ion lithium coban. Pin c\u00f3 dung l\u01b0\u1ee3ng \u0111\u1ecbnh danh l\u00e0 45Ah, \u0111i\u1ec7n \u00e1p danh \u0111\u1ecbnh l\u00e0 3,7V v\u00e0 c\u00f3 th\u1ec3 x\u1ea3 \u1edf nhi\u1ec7t \u0111\u1ed9 m\u00f4i tr\u01b0\u1eddng -20~60\u2103. V\u1eadt li\u1ec7u cat\u1ed1t c\u1ee7a pin l\u00e0 lithium coban. Thi\u1ebft b\u1ecb s\u1ea1c v\u00e0 x\u1ea3 pin. <\/span><\/span>Bu\u1ed3ng th\u1eed nhi\u1ec7t \u0111\u1ed9 v\u00e0 \u0111\u1ed9 \u1ea9m DGBELL<\/span><\/span><\/a> \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t nhi\u1ec7t \u0111\u1ed9.<\/span><\/span><\/p>\n

1.2 C\u00e1c b\u01b0\u1edbc th\u1eed nghi\u1ec7m<\/span><\/span><\/strong><\/span><\/h2>\n

Ki\u1ec3m tra dung l\u01b0\u1ee3ng c\u1ee7a pin lithium coban axit h\u00e0ng kh\u00f4ng \u00e1p d\u1ee5ng ph\u01b0\u01a1ng ph\u00e1p x\u1ea3 ho\u00e0n to\u00e0n. Pin lithium coban axit \u0111\u1ee7 \u0111\u01b0\u1ee3c \u0111\u1eb7t trong c\u00e1c m\u00f4i tr\u01b0\u1eddng nhi\u1ec7t \u0111\u1ed9 kh\u00e1c nhau \u0111\u1ec3 th\u1ef1c hi\u1ec7n c\u00e1c th\u00ed nghi\u1ec7m x\u1ea3 v\u00e0 th\u1ea3o lu\u1eadn v\u1ec1 t\u00e1c \u0111\u1ed9ng c\u1ee7a s\u1ef1 thay \u0111\u1ed5i nhi\u1ec7t \u0111\u1ed9 m\u00f4i tr\u01b0\u1eddng \u0111\u1ed1i v\u1edbi dung l\u01b0\u1ee3ng x\u1ea3 c\u1ee7a pin. C\u00e1c b\u01b0\u1edbc c\u1ee5 th\u1ec3 nh\u01b0 sau:<\/span><\/span><\/p>\n

(1) K\u00edch ho\u1ea1t pin b\u1eb1ng c\u00e1ch s\u1ea1c v\u00e0 x\u1ea3 pin nhi\u1ec1u l\u1ea7n v\u1edbi d\u00f2ng \u0111i\u1ec7n 0,5C \u0111\u1ec3 k\u00edch ho\u1ea1t c\u00e1c ion b\u00ean trong pin;<\/span><\/span><\/p>\n

(2) Ph\u01b0\u01a1ng ph\u00e1p s\u1ea1c l\u00e0 s\u1ea1c pin v\u1edbi t\u1ed1c \u0111\u1ed9 d\u00f2ng \u0111i\u1ec7n kh\u00f4ng \u0111\u1ed5i 0,2C. Khi \u0111i\u1ec7n \u00e1p pin \u0111\u1ea1t 4,15V, ph\u01b0\u01a1ng ph\u00e1p s\u1ea1c \u0111\u01b0\u1ee3c thay \u0111\u1ed5i th\u00e0nh s\u1ea1c \u0111i\u1ec7n \u00e1p kh\u00f4ng \u0111\u1ed5i cho \u0111\u1ebfn khi d\u00f2ng \u0111i\u1ec7n s\u1ea1c gi\u1ea3m xu\u1ed1ng 03A v\u00e0 qu\u00e1 tr\u00ecnh s\u1ea1c d\u1eebng l\u1ea1i;<\/span><\/span><\/p>\n

(3) Ph\u01b0\u01a1ng ph\u00e1p x\u1ea3 l\u00e0 \u0111\u1ec3 pin \u1edf nhi\u1ec7t \u0111\u1ed9 m\u00f4i tr\u01b0\u1eddng trong 1b, sau \u0111\u00f3 x\u1ea3 v\u1edbi t\u1ed1c \u0111\u1ed9 d\u00f2ng \u0111i\u1ec7n kh\u00f4ng \u0111\u1ed5i l\u00e0 0,2C cho \u0111\u1ebfn khi \u0111i\u1ec7n \u00e1p pin gi\u1ea3m xu\u1ed1ng 3V th\u00ec d\u1eebng x\u1ea3 v\u00e0 t\u00ednh to\u00e1n l\u01b0\u1ee3ng \u0111i\u1ec7n m\u00e0 pin gi\u1ea3i ph\u00f3ng;<\/span><\/span><\/p>\n

(4) Thay \u0111\u1ed5i tr\u1ea1ng th\u00e1i SOC c\u1ee7a pin: Ti\u1ebfn h\u00e0nh th\u00ed nghi\u1ec7m s\u1ea1c v\u00e0 x\u1ea3, ghi l\u1ea1i s\u1ef1 thay \u0111\u1ed5i \u0111i\u1ec7n \u00e1p c\u1ee7a pin trong qu\u00e1 tr\u00ecnh s\u1ea1c v\u00e0 x\u1ea3;<\/span><\/span><\/p>\n

(5) \u0110\u1eb7t 7 pin axit khoan lithium c\u00f9ng lo\u1ea1i \u1edf nhi\u1ec7t \u0111\u1ed9 -20, -10, 0, 10, 20, 30 v\u00e0 40\u2103 \u0111\u1ec3 s\u1ea1c v\u00e0 x\u1ea3, v\u1edbi c\u00e1c b\u01b0\u1edbc t\u01b0\u01a1ng t\u1ef1 nh\u01b0 tr\u00ean;<\/span><\/span><\/p>\n

(6) Ghi l\u1ea1i k\u1ebft qu\u1ea3 th\u1ef1c nghi\u1ec7m, s\u1eafp x\u1ebfp d\u1eef li\u1ec7u th\u1ef1c nghi\u1ec7m v\u00e0 t\u00ednh to\u00e1n dung l\u01b0\u1ee3ng x\u1ea3 c\u1ee7a pin;<\/span><\/span><\/p>\n

(7) T\u1eaft ngu\u1ed3n \u0111i\u1ec7n s\u1ea1c sau khi s\u1ea1c, t\u1eaft t\u1ea3i \u0111i\u1ec7n t\u1eed sau khi x\u1ea3 v\u00e0 v\u1ec7 sinh thi\u1ebft b\u1ecb th\u00ed nghi\u1ec7m;<\/span><\/span><\/p>\n

(8) D\u1ef1a tr\u00ean d\u1eef li\u1ec7u th\u1ef1c nghi\u1ec7m, h\u00e3y v\u1ebd \u0111\u01b0\u1eddng cong bi\u1ebfn thi\u00ean c\u1ee7a \u0111i\u1ec7n \u00e1p pin theo SOC \u1edf c\u00e1c nhi\u1ec7t \u0111\u1ed9 kh\u00e1c nhau trong qu\u00e1 tr\u00ecnh s\u1ea1c v\u00e0 x\u1ea3.<\/span><\/span><\/p>\n

2 K\u1ebft qu\u1ea3 th\u1ef1c nghi\u1ec7m v\u00e0 ph\u00e2n t\u00edch<\/span><\/span><\/strong><\/span><\/h1>\n

\u1ea2nh h\u01b0\u1edfng c\u1ee7a nhi\u1ec7t \u0111\u1ed9 m\u00f4i tr\u01b0\u1eddng \u0111\u1ebfn \u0111\u1eb7c t\u00ednh s\u1ea1c v\u00e0 x\u1ea3<\/span><\/span><\/p>\n

B\u1eb1ng c\u00e1ch ph\u00e2n t\u00edch \u0111\u01b0\u1eddng cong bi\u1ebfn thi\u00ean \u0111i\u1ec7n \u00e1p, c\u00f3 th\u1ec3 th\u1ea5y r\u1eb1ng bi\u1ebfn thi\u00ean \u0111i\u1ec7n \u00e1p trong khu v\u1ef1c b\u1ec7 c\u1ee7a pin s\u1ea1c l\u00e0 \u0111\u00e1ng k\u1ec3 trong m\u00f4i tr\u01b0\u1eddng nhi\u1ec7t \u0111\u1ed9 th\u1ea5p. Khi nhi\u1ec7t \u0111\u1ed9 m\u00f4i tr\u01b0\u1eddng t\u0103ng v\u00e0 c\u00f9ng m\u1ed9t l\u01b0\u1ee3ng \u0111i\u1ec7n t\u00edch \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng, xu h\u01b0\u1edbng thay \u0111\u1ed5i \u0111i\u1ec7n \u00e1p gi\u1ea3m. Khi pin \u1edf c\u00e1c nhi\u1ec7t \u0111\u1ed9 kh\u00e1c nhau c\u00f3 c\u00f9ng \u0111i\u1ec7n \u00e1p, pin \u1edf nhi\u1ec7t \u0111\u1ed9 m\u00f4i tr\u01b0\u1eddng cao h\u01a1n c\u00f3 kh\u1ed1i l\u01b0\u1ee3ng l\u1edbn h\u01a1n n\u0103ng l\u01b0\u1ee3ng. N\u1ebfu h\u1ec7 th\u1ed1ng qu\u1ea3n l\u00fd pin kh\u00f4ng thi\u1ebft l\u1eadp ph\u00e1t hi\u1ec7n nhi\u1ec7t \u0111\u1ed9, pin c\u00f3 th\u1ec3 b\u1ecb x\u1ea3 ho\u1eb7c s\u1ea1c qu\u00e1 m\u1ee9c \u1edf nhi\u1ec7t \u0111\u1ed9 th\u1ea5p, nh\u01b0ng kh\u00f4ng \u0111\u01b0\u1ee3c s\u1ea1c \u0111\u1ea7y \u1edf nhi\u1ec7t \u0111\u1ed9 cao, do \u0111\u00f3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn tu\u1ed5i th\u1ecd c\u1ee7a pin<\/span><\/span><\/p>\n

Trong giai \u0111o\u1ea1n \u0111\u1ea7u c\u1ee7a qu\u00e1 tr\u00ecnh s\u1ea1c, s\u1ea1c d\u00f2ng \u0111i\u1ec7n kh\u00f4ng \u0111\u1ed5i \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng v\u00e0 pin h\u1ea5p th\u1ee5 nhi\u1ec7t. Khi qu\u00e1 tr\u00ecnh s\u1ea1c ti\u1ebfn tri\u1ec3n, nhi\u1ec7t \u0111\u1ed9 c\u1ee7a pin t\u0103ng l\u00ean m\u1ea1nh m\u1ebd. Sau khi \u0111\u1ea1t \u0111\u1ebfn \u0111i\u1ec7n \u00e1p s\u1ea1c t\u1ed1i \u0111a, n\u00f3 chuy\u1ec3n sang s\u1ea1c \u0111i\u1ec7n \u00e1p kh\u00f4ng \u0111\u1ed5i v\u00e0 t\u1ed1c \u0111\u1ed9 t\u0103ng tr\u01b0\u1edfng \u0111i\u1ec7n \u00e1p c\u1ee7a pin ch\u1eadm l\u1ea1i. Nhi\u1ec7t \u0111\u1ed9 c\u00e0ng th\u1ea5p, pin c\u00e0ng d\u1ec5 \u0111\u1ea1t \u0111\u1ebfn \u0111i\u1ec7n \u00e1p ng\u1eaft s\u1ea1c<\/span><\/span><\/p>\n

Qua ph\u00e2n t\u00edch nh\u1eefng thay \u0111\u1ed5i v\u1ec1 \u0111\u01b0\u1eddng cong, c\u00f3 th\u1ec3 th\u1ea5y r\u1eb1ng trong \u0111i\u1ec1u ki\u1ec7n x\u1ea3 d\u00f2ng \u0111i\u1ec7n kh\u00f4ng \u0111\u1ed5i, s\u1ef1 thay \u0111\u1ed5i \u0111i\u1ec7n \u00e1p c\u1ee7a pin lithium axit khoan h\u00e0ng kh\u00f4ng c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c chia th\u00e0nh ba giai \u0111o\u1ea1n:<\/span><\/span><\/p>\n

(1) trong giai \u0111o\u1ea1n \u0111\u1ea7u x\u1ea3, \u0111i\u1ec7n \u00e1p c\u1ee7a pin gi\u1ea3m nhanh ch\u00f3ng;<\/span><\/span><\/p>\n

(2) Sau m\u1ed9t th\u1eddi gian x\u1ea3 nh\u1ea5t \u0111\u1ecbnh, \u0111i\u1ec7n \u00e1p c\u1ee7a pin gi\u1ea3m d\u1ea7n v\u00e0 \u0111i v\u00e0o khu v\u1ef1c b\u1ec7;<\/span><\/span><\/p>\n

(3) Khi k\u1ebft th\u00fac qu\u00e1 tr\u00ecnh x\u1ea3 (v\u1edbi tr\u1ea1ng th\u00e1i s\u1ea1c nh\u1ecf h\u01a1n 0,2 S0C), \u0111i\u1ec7n \u00e1p c\u1ee7a \u1eafc quy c\u00f3 xu h\u01b0\u1edbng gi\u1ea3m tuy\u1ebfn t\u00ednh.<\/span><\/span><\/p>\n

Khi pin lithium x\u1ea3 t\u1eeb \u0111i\u1ec7n \u00e1p s\u1ea1c \u0111\u1ea7y 4,2V \u0111\u1ebfn 3,7V, m\u1ea5t nhi\u1ec1u th\u1eddi gian, nh\u01b0ng khi v\u01b0\u1ee3t qu\u00e1 3,7V, \u0111i\u1ec7n \u00e1p pin gi\u1ea3m nhanh ch\u00f3ng. \u0110i\u1ec1u n\u00e0y l\u00e0 do pin c\u00f3 b\u1ec7 x\u1ea3 v\u00e0 di\u1ec7n t\u00edch b\u1ec7 c\u00f3 c\u00f4ng su\u1ea5t pin \u0111\u1ee7 m\u1ea1nh nh\u1ea5t. \u1ede giai \u0111o\u1ea1n x\u1ea3 gi\u1eefa, \u0111i\u1ec7n \u00e1p c\u1ee7a pin lithium coban oxit gi\u1ea3m ch\u1eadm. Khi gi\u00e1 tr\u1ecb SOC d\u01b0\u1edbi 0,2 v\u00e0 pin ti\u1ebfp t\u1ee5c x\u1ea3, \u0111i\u1ec7n \u00e1p gi\u1ea3m nhanh v\u00e0 s\u1ef1 kh\u00e1c bi\u1ec7t kh\u00f4ng \u0111\u00e1ng k\u1ec3 \u1edf c\u00e1c nhi\u1ec7t \u0111\u1ed9 kh\u00e1c nhau; Khi \u0111i\u1ec7n \u00e1p pin l\u00e0 38V, SOC c\u1ee7a pin trong m\u00f4i tr\u01b0\u1eddng 40 \u2103 l\u00e0 kho\u1ea3ng 0,6, trong khi SOC c\u1ee7a pin trong m\u00f4i tr\u01b0\u1eddng 20 \u2103 ch\u1ec9 kho\u1ea3ng 0,2. \u0110i\u1ec1u n\u00e0y c\u00f3 ngh\u0129a l\u00e0 nhi\u1ec7t \u0111\u1ed9 c\u00e0ng th\u1ea5p, pin c\u00e0ng d\u1ec5 \u0111\u1ea1t \u0111\u1ebfn tr\u1ea1ng th\u00e1i c\u1eaft x\u1ea3.<\/span><\/span><\/p>\n

B\u1eb1ng c\u00e1ch v\u1ebd \u0111\u01b0\u1eddng cong \u0111i\u1ec7n \u00e1p \u1edf nhi\u1ec7t \u0111\u1ed9 40, 20 \u2103 v\u00e0 -10 \u2103, c\u00f3 th\u1ec3 th\u1ea5y. C\u00f3 s\u1ef1 kh\u00e1c bi\u1ec7t trong \u0111\u01b0\u1eddng cong \u0111i\u1ec7n \u00e1p gi\u1eefa c\u00e1c qu\u00e1 tr\u00ecnh s\u1ea1c v\u00e0 x\u1ea3, v\u00e0 \u0111\u01b0\u1eddng cong \u0111i\u1ec7n \u00e1p thu \u0111\u01b0\u1ee3c t\u1eeb vi\u1ec7c x\u1ea3 lu\u00f4n th\u1ea5p h\u01a1n m\u1ed9t ch\u00fat so v\u1edbi \u0111\u01b0\u1eddng cong thu \u0111\u01b0\u1ee3c t\u1eeb vi\u1ec7c s\u1ea1c. \u0110i\u1ec1u n\u00e0y l\u00e0 do khi pin \u0111\u01b0\u1ee3c s\u1ea1c \u0111\u1ebfn m\u1ed9t gi\u00e1 tr\u1ecb SOC nh\u1ea5t \u0111\u1ecbnh v\u00e0 b\u1eaft \u0111\u1ea7u \u0111\u1ee9ng y\u00ean, \u0111i\u1ec7n \u00e1p ti\u1ebfp t\u1ee5c gi\u1ea3m cho \u0111\u1ebfn khi n\u00f3 d\u1ea7n d\u1ea7n ti\u1ebfn t\u1edbi gi\u00e1 tr\u1ecb \u0111i\u1ec7n \u00e1p th\u1ef1c c\u1ee7a pin, trong khi khi n\u00f3 \u0111\u01b0\u1ee3c x\u1ea3 \u0111\u1ebfn c\u00f9ng m\u1ed9t gi\u00e1 tr\u1ecb SOC v\u00e0 b\u1eaft \u0111\u1ea7u \u0111\u1ee9ng y\u00ean, \u0111i\u1ec7n \u00e1p ti\u1ebfp t\u1ee5c t\u0103ng cho \u0111\u1ebfn khi n\u00f3 d\u1ea7n d\u1ea7n ti\u1ebfn t\u1edbi c\u00f9ng m\u1ed9t gi\u00e1 tr\u1ecb \u0111i\u1ec7n \u00e1p th\u1ef1c c\u1ee7a pin.<\/span><\/span><\/p>\n

Do qu\u00e1 tr\u00ecnh h\u1ed9i t\u1ee5 ch\u1eadm v\u00e0 th\u1eddi gian c\u1ea7n thi\u1ebft d\u00e0i, ngay c\u1ea3 khi pin \u0111\u00e3 \u0111\u1ee9ng y\u00ean trong m\u1ed9t th\u1eddi gian \u0111\u00e1ng k\u1ec3 khi \u0111o \u0111i\u1ec7n \u00e1p, \u0111i\u1ec7n \u00e1p thu \u0111\u01b0\u1ee3c tr\u00ean \u0111\u01b0\u1eddng cong x\u1ea3 v\u1eabn th\u1ea5p h\u01a1n \u0111i\u1ec7n \u00e1p thu \u0111\u01b0\u1ee3c tr\u00ean \u0111\u01b0\u1eddng cong s\u1ea1c. V\u00e0 khi nhi\u1ec7t \u0111\u1ed9 gi\u1ea3m, ch\u00eanh l\u1ec7ch gi\u1eefa \u0111\u01b0\u1eddng cong s\u1ea1c v\u00e0 x\u1ea3 d\u1ea7n thu h\u1eb9p l\u1ea1i.<\/span><\/span><\/p>\n

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

B\u00e0i vi\u1ebft n\u00e0y ph\u00e2n t\u00edch m\u1ed1i quan h\u1ec7 gi\u1eefa nhi\u1ec7t \u0111\u1ed9 v\u00e0 \u0111\u1eb7c t\u00ednh c\u1ee7a pin lithium axit coban h\u00e0ng kh\u00f4ng b\u1eb1ng c\u00e1ch ki\u1ec3m tra s\u1ef1 thay \u0111\u1ed5i trong \u0111\u01b0\u1eddng cong \u0111i\u1ec7n \u00e1p s\u1ea1c v\u00e0 x\u1ea3 s\u1ea1c c\u1ee7a pin kali axit coban h\u00e0ng kh\u00f4ng \u1edf c\u00e1c nhi\u1ec7t \u0111\u1ed9 kh\u00e1c nhau. C\u00f3 th\u1ec3 r\u00fat ra c\u00e1c k\u1ebft lu\u1eadn sau:<\/span><\/span><\/p>\n

(1) S\u1ef1 thay \u0111\u1ed5i dung l\u01b0\u1ee3ng c\u1ee7a pin lithium coban oxide h\u00e0ng kh\u00f4ng \u0111\u1eb7c bi\u1ec7t r\u00f5 r\u00e0ng \u1edf nhi\u1ec7t \u0111\u1ed9 th\u1ea5p. Khi nhi\u1ec7t \u0111\u1ed9 m\u00f4i tr\u01b0\u1eddng l\u00e0 -20 \u2103, dung l\u01b0\u1ee3ng s\u1ea1c pin ch\u1ec9 c\u00f3 th\u1ec3 \u0111\u1ea1t 62% dung l\u01b0\u1ee3ng c\u1ee7a Nameplate. Khi nhi\u1ec7t \u0111\u1ed9 t\u0103ng, dung l\u01b0\u1ee3ng pin t\u0103ng l\u00ean v\u00e0 dung l\u01b0\u1ee3ng s\u1ea1c c\u00f3 th\u1ec3 \u0111\u1ea1t 107% SOC \u1edf nhi\u1ec7t \u0111\u1ed9 m\u00f4i tr\u01b0\u1eddng l\u00e0 40 \u2103. Do \u0111\u00f3, nhi\u1ec7t \u0111\u1ed9 m\u00f4i tr\u01b0\u1eddng l\u00e0m vi\u1ec7c c\u1ee7a pin n\u00ean \u0111\u01b0\u1ee3c gi\u1eef trong ph\u1ea1m vi 0 ~ 40 \u2103 c\u00e0ng nhi\u1ec1u c\u00e0ng t\u1ed1t;<\/span><\/span><\/p>\n

(2) Trong qu\u00e1 tr\u00ecnh s\u1ea1c v\u00e0 x\u1ea3, \u0111i\u1ec7n \u00e1p c\u1ee7a pin thay \u0111\u1ed5i theo nhi\u1ec7t \u0111\u1ed9 m\u00f4i tr\u01b0\u1eddng thay \u0111\u1ed5i. Nhi\u1ec7t \u0111\u1ed9 c\u00e0ng th\u1ea5p, pin c\u00e0ng d\u1ec5 \u0111\u1ea1t \u0111\u1ebfn \u0111i\u1ec7n \u00e1p ng\u1eaft s\u1ea1c v\u00e0 x\u1ea3. Khi \u0111i\u1ec7n \u00e1p c\u1ee7a pin gi\u1ed1ng nhau, nhi\u1ec7t \u0111\u1ed9 c\u00e0ng th\u1ea5p, gi\u00e1 tr\u1ecb SOC c\u1ee7a pin c\u00e0ng nh\u1ecf;<\/span><\/span><\/p>\n

(3) \u0110i\u1ec7n \u00e1p thu \u0111\u01b0\u1ee3c tr\u00ean \u0111\u01b0\u1eddng cong x\u1ea3 nh\u1ecf h\u01a1n \u0111i\u1ec7n \u00e1p thu \u0111\u01b0\u1ee3c tr\u00ean \u0111\u01b0\u1eddng cong s\u1ea1c v\u00e0 ch\u00eanh l\u1ec7ch \u00e1p su\u1ea5t xu\u1ea5t ph\u00e1t t\u1eeb \u0111i\u1ec7n tr\u1edf b\u00ean trong c\u1ee7a pin<\/span><\/span><\/p>\n

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

Pin lithium l\u00e0 m\u1ed9t trong nh\u1eefng ngu\u1ed3n n\u0103ng l\u01b0\u1ee3ng kh\u00f4ng th\u1ec3 thi\u1ebfu trong ng\u00e0nh h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5 ng\u00e0y nay, th\u01b0\u1eddng \u0111\u00f3ng vai tr\u00f2 l\u00e0 ngu\u1ed3n n\u0103ng l\u01b0\u1ee3ng d\u1ef1 ph\u00f2ng cho nhi\u1ec1u thi\u1ebft b\u1ecb m\u00e1y bay kh\u1edfi \u0111\u1ed9ng, li\u00ean l\u1ea1c v\u00e0 \u1ee9ng ph\u00f3 kh\u1ea9n c\u1ea5p. Ch\u00fang l\u00e0 th\u00e0nh ph\u1ea7n quan tr\u1ecdng c\u1ee7a ph\u01b0\u01a1ng ti\u1ec7n h\u00e0ng<\/p>\n","protected":false},"author":1,"featured_media":19693,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[88],"tags":[],"class_list":["post-19692","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\/19692","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=19692"}],"version-history":[{"count":2,"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/posts\/19692\/revisions"}],"predecessor-version":[{"id":21985,"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/posts\/19692\/revisions\/21985"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/media\/19693"}],"wp:attachment":[{"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/media?parent=19692"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/categories?post=19692"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/tags?post=19692"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}