{"id":19603,"date":"2024-02-02T06:19:27","date_gmt":"2024-02-02T06:19:27","guid":{"rendered":"http:\/\/dgbellvietnam.com\/ev-power-battery-cycling-test-part-2\/"},"modified":"2024-10-21T12:23:57","modified_gmt":"2024-10-21T05:23:57","slug":"ev-power-battery-cycling-test-part-2","status":"publish","type":"post","link":"https:\/\/dgbellvietnam.com\/en\/ev-power-battery-cycling-test-part-2\/","title":{"rendered":"Th\u1eed nghi\u1ec7m chu k\u1ef3 pin EV \u2013 Ph\u1ea7n 2"},"content":{"rendered":"
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2.2 Ph\u00e2n t\u00edch d\u1eef li\u1ec7u th\u1eed nghi\u1ec7m chu k\u1ef3 cho h\u1ec7 th\u1ed1ng pin \u0111i\u1ec7n<\/span><\/span><\/h2>\n

(1) H\u1ec7 th\u1ed1ng pin \u0111i\u1ec7n 100% s\u1ea1c x\u1ea3 chu k\u1ef3 s\u00e2u<\/span><\/p>\n

H\u1ec7 th\u1ed1ng pin \u0111i\u1ec7n \u0111\u00e3 tr\u1ea3i qua 170 l\u1ea7n th\u1eed nghi\u1ec7m tu\u1ed5i th\u1ecd chu k\u1ef3 \u1edf \u0111\u1ed9 s\u00e2u s\u1ea1c v\u00e0 x\u1ea3 100% (100% DOD), v\u1edbi nhi\u1ec7t \u0111\u1ed9 ch\u1ea5t l\u00e0m m\u00e1t l\u00e0 25 \u2103 v\u00e0 l\u01b0u l\u01b0\u1ee3ng l\u00e0 8 L\/ph\u00fat trong qu\u00e1 <\/span>tr\u00ecnh tu\u1ea7n ho\u00e0n \u1edf nhi\u1ec7t \u0111\u1ed9 ph\u00f2ng (25 \u00b1 5) \u2103<\/span><\/a> . \u0110\u01b0\u1eddng cong quan h\u1ec7 gi\u1eefa dung l\u01b0\u1ee3ng s\u1ea1c v\u00e0 x\u1ea3 v\u00e0 s\u1ed1 chu k\u1ef3 cho th\u1ea5y dung l\u01b0\u1ee3ng x\u1ea3 ban \u0111\u1ea7u l\u00e0 38,94 Ah v\u00e0 dung l\u01b0\u1ee3ng x\u1ea3 sau 170 chu k\u1ef3 l\u00e0 38,73 Ah, v\u1edbi t\u1ef7 l\u1ec7 duy tr\u00ec dung l\u01b0\u1ee3ng l\u00e0 99,46%. Trong s\u1ed1 \u0111\u00f3, hi\u1ec7u su\u1ea5t coulomb (b\u1eb1ng t\u1ef7 l\u1ec7 ph\u1ea7n tr\u0103m dung l\u01b0\u1ee3ng x\u1ea3 v\u00e0 dung l\u01b0\u1ee3ng s\u1ea1c) lu\u00f4n l\u1edbn h\u01a1n 100%; Trong 15 chu k\u1ef3 \u0111\u1ea7u ti\u00ean, dung l\u01b0\u1ee3ng x\u1ea3 cho th\u1ea5y xu h\u01b0\u1edbng t\u0103ng, cho th\u1ea5y h\u1ec7 th\u1ed1ng pin \u0111i\u1ec7n \u0111ang trong qu\u00e1 tr\u00ecnh k\u00edch ho\u1ea1t<\/span><\/p>\n

(2) Tu\u1ed5i th\u1ecd chu k\u1ef3 s\u1ea1c v\u00e0 x\u1ea3 s\u00e2u 80% cho h\u1ec7 th\u1ed1ng pin \u0111i\u1ec7n<\/span><\/p>\n

Kh\u1ea3 n\u0103ng x\u1ea3 c\u1ee7a h\u1ec7 th\u1ed1ng v\u00e0 s\u1ed1 chu k\u1ef3.<\/span><\/p>\n

H\u1ec7 th\u1ed1ng pin \u0111i\u1ec7n \u0111\u01b0\u1ee3c th\u1eed nghi\u1ec7m tu\u1ed5i th\u1ecd 2500 chu k\u1ef3 \u1edf nhi\u1ec7t \u0111\u1ed9 ph\u00f2ng (25 \u00b1 5) \u2103, v\u1edbi nhi\u1ec7t \u0111\u1ed9 ch\u1ea5t l\u00e0m m\u00e1t l\u00e0 25 \u2103 v\u00e0 l\u01b0u l\u01b0\u1ee3ng l\u00e0 8L\/ph\u00fat trong qu\u00e1 tr\u00ecnh tu\u1ea7n ho\u00e0n, s\u1eed d\u1ee5ng 80% DOD.<\/span><\/p>\n

Th\u1ef1c hi\u1ec7n ki\u1ec3m tra hi\u1ec7u su\u1ea5t m\u1ed9t l\u1ea7n sau m\u1ed7i 200 ho\u1eb7c 100 chu k\u1ef3 (v\u1edbi kh\u1ea3 n\u0103ng hi\u1ec7u chu\u1ea9n l\u00e0 200 chu k\u1ef3 tr\u01b0\u1edbc 1600 chu k\u1ef3 v\u00e0 100 chu k\u1ef3 sau 1600 chu k\u1ef3). Th\u1ef1c hi\u1ec7n 3 l\u1ea7n s\u1ea1c v\u00e0 x\u1ea3 DOD 100% \u0111\u1ec3 hi\u1ec7u chu\u1ea9n kh\u1ea3 n\u0103ng. V\u00e0 ti\u1ebfn h\u00e0nh c\u00e1c th\u1eed nghi\u1ec7m DCIR d\u01b0\u1edbi c\u00e1c d\u00f2ng xung kh\u00e1c nhau \u1edf 50% SOC.<\/span><\/p>\n

Dung l\u01b0\u1ee3ng x\u1ea3 ban \u0111\u1ea7u c\u1ee7a h\u1ec7 th\u1ed1ng pin l\u00e0 38,98 Ah. Sau 2500 chu k\u1ef3, dung l\u01b0\u1ee3ng x\u1ea3 ch\u1ec9 c\u00f2n 10,20 Ah. Tr\u01b0\u1edbc 1200 chu k\u1ef3, dung l\u01b0\u1ee3ng gi\u1ea3m ch\u1eadm, v\u1edbi m\u1ee9c m\u1ea5t dung l\u01b0\u1ee3ng l\u00e0 5,58 Ah. Sau \u0111\u00f3, dung l\u01b0\u1ee3ng gi\u1ea3m nhanh, v\u1edbi m\u1ee9c m\u1ea5t dung l\u01b0\u1ee3ng l\u00e0 23,2 Ah trong kho\u1ea3ng t\u1eeb 1200 \u0111\u1ebfn 2500 chu k\u1ef3, v\u1edbi t\u1ef7 l\u1ec7 m\u1ea5t dung l\u01b0\u1ee3ng l\u00e0 59,5%. Trong to\u00e0n b\u1ed9 v\u00f2ng \u0111\u1eddi c\u1ee7a chu k\u1ef3, t\u1ef7 l\u1ec7 gi\u1ea3m dung l\u01b0\u1ee3ng l\u00e0 73,8%. Hi\u1ec7u su\u1ea5t Coulomb cho th\u1ea5y xu h\u01b0\u1edbng \u0111\u1ea7u ti\u00ean l\u00e0 t\u0103ng v\u00e0 sau \u0111\u00f3 gi\u1ea3m. Tr\u01b0\u1edbc 400 chu k\u1ef3, hi\u1ec7u su\u1ea5t Coulomb li\u00ean t\u1ee5c t\u0103ng v\u00e0 sau \u0111\u00f3 gi\u1ea3m d\u1ea7n. Sau 1700 chu k\u1ef3, hi\u1ec7u su\u1ea5t Coulomb nh\u1ecf h\u01a1n 100%<\/span><\/p>\n

M\u1eabu chung c\u1ee7a v\u00f2ng \u0111\u1eddi c\u1ee7a h\u1ec7 th\u1ed1ng pin \u0111i\u1ec7n n\u00e0y l\u00e0 s\u1ef1 suy gi\u1ea3m dung l\u01b0\u1ee3ng t\u0103ng t\u1ed1c theo th\u1eddi gian chu k\u1ef3 t\u0103ng. \u0110i\u1ec1u n\u00e0y kh\u00e1c v\u1edbi xu h\u01b0\u1edbng suy gi\u1ea3m dung l\u01b0\u1ee3ng cell pin \u0111\u01b0\u1ee3c b\u00e1o c\u00e1o trong t\u00e0i li\u1ec7u, v\u00ec h\u1ec7 th\u1ed1ng pin bao g\u1ed3m m\u1ed9t s\u1ed1 l\u01b0\u1ee3ng l\u1edbn cell pin v\u00e0 s\u1ef1 kh\u00f4ng nh\u1ea5t qu\u00e1n c\u1ee7a c\u00e1c cell pin c\u00f3 t\u00e1c \u0111\u1ed9ng \u0111\u00e1ng k\u1ec3 \u0111\u1ebfn dung l\u01b0\u1ee3ng c\u1ee7a h\u1ec7 th\u1ed1ng pin. \u0110\u1ed3ng th\u1eddi, n\u00f3 c\u0169ng l\u00e0m m\u1edd \u0111i xu h\u01b0\u1edbng thay \u0111\u1ed5i dung l\u01b0\u1ee3ng cell pin, khi\u1ebfn n\u00f3 kh\u00e1c v\u1edbi xu h\u01b0\u1edbng thay \u0111\u1ed5i dung l\u01b0\u1ee3ng cell pin.<\/span><\/p>\n

Tu\u1ed5i th\u1ecd chu k\u1ef3 h\u1ec7 th\u1ed1ng v\u00e0 ch\u00eanh l\u1ec7ch \u00e1p su\u1ea5t ri\u00eang l\u1ebb<\/span><\/p>\n

\u0110\u1ec3 nghi\u00ean c\u1ee9u \u1ea3nh h\u01b0\u1edfng c\u1ee7a ch\u00eanh l\u1ec7ch \u00e1p su\u1ea5t cell pin \u0111\u1ebfn dung l\u01b0\u1ee3ng h\u1ec7 th\u1ed1ng pin, trong c\u00e1c th\u1eed nghi\u1ec7m 2500 chu k\u1ef3, ch\u00eanh l\u1ec7ch \u00e1p su\u1ea5t gi\u1eefa \u0111i\u1ec7n \u00e1p cao nh\u1ea5t v\u00e0 \u0111i\u1ec7n \u00e1p th\u1ea5p nh\u1ea5t c\u1ee7a 84 cell pin \u1edf \u0111\u1ea7u s\u1ea1c v\u00e0 \u0111\u1ea7u x\u1ea3 c\u1ee7a b\u1ed9 pin \u0111\u00e3 \u0111\u01b0\u1ee3c ghi l\u1ea1i trong m\u1ed7i th\u1eed nghi\u1ec7m hi\u1ec7u su\u1ea5t. T\u1eeb k\u1ebft qu\u1ea3 th\u1ef1c nghi\u1ec7m, c\u00f3 th\u1ec3 th\u1ea5y r\u1eb1ng ch\u00eanh l\u1ec7ch \u0111i\u1ec7n \u00e1p \u0111\u1ea7u x\u1ea3 ban \u0111\u1ea7u c\u1ee7a h\u1ec7 th\u1ed1ng pin l\u00e0 0,171 V v\u00e0 ch\u00eanh l\u1ec7ch \u0111i\u1ec7n \u00e1p \u0111\u1ea7u s\u1ea1c l\u00e0 0,018 V. Sau 2500 chu k\u1ef3, ch\u00eanh l\u1ec7ch \u0111i\u1ec7n \u00e1p \u0111\u1ea7u x\u1ea3 l\u00e0 0,550 V v\u00e0 ch\u00eanh l\u1ec7ch \u0111i\u1ec7n \u00e1p \u0111\u1ea7u s\u1ea1c l\u00e0 0,286 V. T\u1eeb k\u1ebft qu\u1ea3, c\u00f3 th\u1ec3 th\u1ea5y r\u1eb1ng m\u1ed9t m\u1eb7t, ch\u00eanh l\u1ec7ch \u00e1p su\u1ea5t \u1edf \u0111\u1ea7u x\u1ea3 lu\u00f4n l\u1edbn h\u01a1n ch\u00eanh l\u1ec7ch \u1edf \u0111\u1ea7u s\u1ea1c trong to\u00e0n b\u1ed9 v\u00f2ng \u0111\u1eddi chu k\u1ef3 v\u00e0 cho th\u1ea5y xu h\u01b0\u1edbng m\u1edf r\u1ed9ng d\u1ea7n d\u1ea7n.<\/span><\/p>\n

M\u1eb7t kh\u00e1c, khi s\u1ed1 chu k\u1ef3 t\u0103ng l\u00ean, c\u1ea3 ch\u00eanh l\u1ec7ch \u00e1p su\u1ea5t \u0111\u1ea7u s\u1ea1c v\u00e0 ch\u00eanh l\u1ec7ch \u00e1p su\u1ea5t \u0111\u1ea7u x\u1ea3 \u0111\u1ec1u ti\u1ebfp t\u1ee5c t\u0103ng. V\u00e0 t\u1ed1c \u0111\u1ed9 t\u0103ng ng\u00e0y c\u00e0ng nhanh h\u01a1n;<\/span><\/p>\n

T\u01b0\u01a1ng \u1ee9ng, trong qu\u00e1 tr\u00ecnh tu\u1ea7n ho\u00e0n, t\u1ed1c \u0111\u1ed9 suy gi\u1ea3m dung l\u01b0\u1ee3ng c\u1ee7a h\u1ec7 th\u1ed1ng pin c\u0169ng ng\u00e0y c\u00e0ng nhanh h\u01a1n khi ch\u00eanh l\u1ec7ch \u00e1p su\u1ea5t gi\u1eefa c\u00e1c cell pin t\u0103ng l\u00ean, \u0111\u1eb7c bi\u1ec7t l\u00e0 sau 1200 chu k\u1ef3, m\u00f4 h\u00ecnh t\u01b0\u01a1ng \u1ee9ng n\u00e0y tr\u1edf n\u00ean r\u00f5 r\u00e0ng h\u01a1n.<\/span><\/p>\n

Trong giai \u0111o\u1ea1n \u0111\u1ea7u c\u1ee7a th\u1eed nghi\u1ec7m tu\u1ed5i th\u1ecd chu k\u1ef3, ch\u00eanh l\u1ec7ch \u00e1p su\u1ea5t c\u1ee7a h\u1ec7 th\u1ed1ng pin t\u01b0\u01a1ng \u0111\u1ed1i nh\u1ecf v\u00e0 s\u1ef1 suy gi\u1ea3m dung l\u01b0\u1ee3ng c\u1ee7a n\u00f3 ch\u1ee7 y\u1ebfu l\u00e0 do s\u1ef1 suy gi\u1ea3m dung l\u01b0\u1ee3ng c\u1ee7a t\u1eebng cell pin t\u1ea1o n\u00ean h\u1ec7 th\u1ed1ng. Khi s\u1ed1 chu k\u1ef3 t\u0103ng l\u00ean, \u0111i\u1ec7n \u00e1p c\u1ee7a m\u1ed9t s\u1ed1 cell pin gi\u1ea3m xu\u1ed1ng, khi\u1ebfn t\u1ed5ng \u0111i\u1ec7n \u00e1p ho\u1eb7c \u0111i\u1ec7n \u00e1p cell c\u1ee7a h\u1ec7 th\u1ed1ng pin \u0111\u1ea1t \u0111\u1ebfn \u0111i\u1ec1u ki\u1ec7n c\u1eaft x\u1ea3 tr\u01b0\u1edbc. Ng\u01b0\u1ee3c l\u1ea1i, c\u00e1c cell kh\u00e1c v\u1eabn ch\u01b0a \u0111\u1ea1t \u0111\u1ebfn \u0111i\u1ec1u ki\u1ec7n c\u1eaft x\u1ea3, d\u1eabn \u0111\u1ebfn vi\u1ec7c x\u1ea3 kh\u00f4ng ho\u00e0n to\u00e0n ph\u1ea7n dung l\u01b0\u1ee3ng cell n\u00e0y v\u00e0 l\u00e0m gi\u1ea3m dung l\u01b0\u1ee3ng x\u1ea3 c\u1ee7a h\u1ec7 th\u1ed1ng pin.<\/span><\/p>\n

Do \u0111\u00f3, trong tr\u01b0\u1eddng h\u1ee3p ch\u00eanh l\u1ec7ch \u00e1p su\u1ea5t l\u1edbn, kh\u1ea3 n\u0103ng x\u1ea3 c\u1ee7a h\u1ec7 th\u1ed1ng pin kh\u00f4ng th\u1ec3 ph\u1ea3n \u00e1nh \u0111\u1ea7y \u0111\u1ee7 kh\u1ea3 n\u0103ng c\u1ee7a ch\u00ednh h\u1ec7 th\u1ed1ng pin. T\u00f3m l\u1ea1i, xu h\u01b0\u1edbng thay \u0111\u1ed5i dung l\u01b0\u1ee3ng trong h\u1ec7 th\u1ed1ng pin l\u00e0 bi\u1ec3u hi\u1ec7n to\u00e0n di\u1ec7n c\u1ee7a s\u1ef1 suy gi\u1ea3m dung l\u01b0\u1ee3ng c\u1ee7a ch\u00ednh cell pin v\u00e0 s\u1ef1 gia t\u0103ng t\u00ednh kh\u00f4ng nh\u1ea5t qu\u00e1n gi\u1eefa c\u00e1c cell pin, kh\u00e1c bi\u1ec7t \u0111\u00e1ng k\u1ec3 so v\u1edbi quy lu\u1eadt suy gi\u1ea3m dung l\u01b0\u1ee3ng cell.<\/span><\/p>\n

Tu\u1ed5i th\u1ecd chu k\u1ef3 h\u1ec7 th\u1ed1ng v\u00e0 \u0111i\u1ec7n tr\u1edf DC<\/span><\/p>\n

Ki\u1ec3m tra DCIR c\u1ee7a h\u1ec7 th\u1ed1ng pin bao g\u1ed3m vi\u1ec7c s\u1ea1c h\u1ec7 th\u1ed1ng \u0111\u1ebfn t\u1ed5ng \u0111i\u1ec7n \u00e1p l\u00e0 311,56 V, sau \u0111\u00f3 l\u00e0 s\u1ea1c 20 A v\u00e0 x\u1ea3 20 A trong 10 gi\u00e2y, v\u00e0 s\u1ea1c v\u00e0 x\u1ea3 120 A trong 10 gi\u00e2y. C\u00e1c gi\u00e1 tr\u1ecb \u0111i\u1ec7n tr\u1edf DC d\u01b0\u1edbi m\u1ed7i d\u00f2ng xung \u0111\u01b0\u1ee3c t\u00ednh to\u00e1n. DCIR (\u0111i\u1ec7n tr\u1edf b\u00ean trong m\u1ed9t chi\u1ec1u) l\u00e0 m\u1ed9t b\u00e0i ki\u1ec3m tra \u0111i\u1ec7n tr\u1edf b\u00ean trong m\u1ed9t chi\u1ec1u c\u1ee7a pin, bao g\u1ed3m hai ph\u1ea7n: \u0111i\u1ec7n tr\u1edf \u00f4mi v\u00e0 \u0111i\u1ec7n tr\u1edf ph\u00e2n c\u1ef1c. \u0110o \u0111i\u1ec7n tr\u1edf b\u00ean trong m\u1ed9t chi\u1ec1u l\u00e0 ph\u01b0\u01a1ng ph\u00e1p xem x\u00e9t v\u00e0 \u0111o c\u1ea3 hai ph\u1ea7n c\u1ee7a \u0111i\u1ec7n tr\u1edf.<\/span><\/p>\n

\u0110i\u1ec7n tr\u1edf b\u00ean trong l\u00e0 m\u1ed9t ch\u1ec9 s\u1ed1 quan tr\u1ecdng \u0111\u1ec3 \u0111o hi\u1ec7u su\u1ea5t c\u1ee7a pin. Pin c\u00f3 \u0111i\u1ec7n tr\u1edf b\u00ean trong th\u1ea5p c\u00f3 kh\u1ea3 n\u0103ng x\u1ea3 d\u00f2ng \u0111i\u1ec7n cao m\u1ea1nh, trong khi pin c\u00f3 \u0111i\u1ec7n tr\u1edf b\u00ean trong cao th\u00ec ng\u01b0\u1ee3c l\u1ea1i. T\u1eeb k\u1ebft qu\u1ea3, c\u00f3 th\u1ec3 th\u1ea5y r\u1eb1ng khi chu k\u1ef3 ti\u1ebfn tri\u1ec3n, DCIR cho th\u1ea5y xu h\u01b0\u1edbng \u0111\u1ea7u ti\u00ean l\u00e0 gi\u1ea3m, sau \u0111\u00f3 \u1ed5n \u0111\u1ecbnh, r\u1ed3i t\u0103ng d\u1ea7n, v\u00e0 \u0111i\u1ec7n tr\u1edf b\u00ean trong khi s\u1ea1c v\u00e0 x\u1ea3 cho th\u1ea5y xu h\u01b0\u1edbng thay \u0111\u1ed5i gi\u1ed1ng nhau \u1edf c\u00e1c d\u00f2ng \u0111i\u1ec7n kh\u00e1c nhau.<\/span><\/p>\n

Sau 1200 chu k\u1ef3, s\u1ef1 gia t\u0103ng \u0111i\u1ec7n tr\u1edf b\u00ean trong DCIR c\u1ee7a h\u1ec7 th\u1ed1ng pin \u0111\u01b0\u1ee3c t\u0103ng t\u1ed1c, t\u01b0\u01a1ng \u1ee9ng v\u1edbi s\u1ef1 suy gi\u1ea3m dung l\u01b0\u1ee3ng t\u0103ng t\u1ed1c v\u00e0 s\u1ef1 gia t\u0103ng nhanh ch\u00f3ng trong ch\u00eanh l\u1ec7ch \u00e1p su\u1ea5t \u0111\u1ea7u c\u1ef1c x\u1ea3 s\u1ea1c sau 1200 chu k\u1ef3. \u0110i\u1ec7n tr\u1edf b\u00ean trong c\u1ee7a qu\u00e1 tr\u00ecnh s\u1ea1c v\u00e0 x\u1ea3 20 A t\u0103ng t\u1eeb 130,0 m\u03a9 v\u00e0 120,0 m\u03a9 tr\u01b0\u1edbc khi b\u1eaft \u0111\u1ea7u chu k\u1ef3 l\u00ean 160,0 m\u03a9 v\u00e0 150,0 m\u03a9 v\u00e0o cu\u1ed1i chu k\u1ef3. \u0110i\u1ec7n tr\u1edf b\u00ean trong c\u1ee7a qu\u00e1 tr\u00ecnh s\u1ea1c v\u00e0 x\u1ea3 120 A t\u0103ng t\u1eeb 115,0 m\u03a9 v\u00e0 113,0 m\u03a9 tr\u01b0\u1edbc khi b\u1eaft \u0111\u1ea7u chu k\u1ef3 l\u00ean 147,5 m\u03a9 v\u00e0 150,8 m\u03a9 v\u00e0o cu\u1ed1i chu k\u1ef3<\/span><\/p>\n

Do t\u1ed5ng \u0111i\u1ec7n \u00e1p h\u1ec7 th\u1ed1ng l\u00e0 311,56 V, c\u00f4ng su\u1ea5t s\u1ea1c v\u00e0 x\u1ea3 20 A l\u00e0 6231,2 W v\u00e0 c\u00f4ng su\u1ea5t s\u1ea1c v\u00e0 x\u1ea3 120 A l\u00e0 37387,2 W. T\u1eeb k\u1ebft qu\u1ea3, c\u00f3 th\u1ec3 k\u1ebft lu\u1eadn r\u1eb1ng sau khi k\u1ebft th\u00fac v\u00f2ng \u0111\u1eddi, t\u1ef7 l\u1ec7 m\u1ea5t \u0111i\u1ec7n c\u1ee7a h\u1ec7 th\u1ed1ng trong qu\u00e1 tr\u00ecnh s\u1ea1c v\u00e0 x\u1ea3 \u1edf d\u00f2ng \u0111i\u1ec7n 20 A l\u1ea7n l\u01b0\u1ee3t l\u00e0 1,03% v\u00e0 0,96%. \u1ede d\u00f2ng \u0111i\u1ec7n 120 A, t\u1ef7 l\u1ec7 m\u1ea5t \u0111i\u1ec7n trong qu\u00e1 tr\u00ecnh s\u1ea1c v\u00e0 x\u1ea3 l\u1ea7n l\u01b0\u1ee3t l\u00e0 5,68% v\u00e0 5,81%. \u0110i\u1ec7n tr\u1edf b\u00ean trong DC t\u0103ng d\u1eabn \u0111\u1ebfn t\u1ed5n th\u1ea5t c\u00f4ng su\u1ea5t trong h\u1ec7 th\u1ed1ng pin t\u0103ng v\u00e0 qu\u00e1 tr\u00ecnh s\u1ea1c v\u00e0 x\u1ea3 c\u00e0ng l\u1edbn th\u00ec t\u1ed5n th\u1ea5t c\u00f4ng su\u1ea5t do \u0111i\u1ec7n tr\u1edf b\u00ean trong g\u00e2y ra c\u00e0ng l\u1edbn.<\/span><\/p>\n

Trong th\u1ef1c t\u1ebf s\u1eed d\u1ee5ng, \u0111i\u1ec7n tr\u1edf trong DC c\u1ee7a h\u1ec7 th\u1ed1ng pin \u0111i\u1ec7n c\u00f3 t\u00e1c d\u1ee5ng chia \u0111i\u1ec7n \u00e1p so v\u1edbi t\u1ea3i ngo\u00e0i, t\u1ee9c l\u00e0 \u0111i\u1ec7n tr\u1edf trong c\u00e0ng l\u1edbn th\u00ec \u0111\u1ed9 s\u1ee5t \u00e1p g\u00e2y ra c\u00e0ng l\u1edbn; \u0111\u1ed3ng th\u1eddi, \u0111i\u1ec7n tr\u1edf trong t\u0103ng d\u1eabn \u0111\u1ebfn c\u00f4ng su\u1ea5t ra ngo\u00e0i c\u1ee7a h\u1ec7 th\u1ed1ng pin gi\u1ea3m t\u01b0\u01a1ng \u1ee9ng; \u0111i\u1ec7n n\u0103ng ti\u00eau th\u1ee5 tr\u00ean \u0111i\u1ec7n tr\u1edf trong t\u0103ng d\u1eabn \u0111\u1ebfn nhi\u1ec7t l\u01b0\u1ee3ng t\u1ecfa ra b\u00ean trong monome t\u0103ng, d\u1eabn \u0111\u1ebfn nhi\u1ec7t \u0111\u1ed9 b\u00ean trong t\u0103ng.<\/span><\/p>\n

M\u1ed9t m\u1eb7t, c\u00f3 s\u1ef1 kh\u00e1c bi\u1ec7t v\u1ec1 s\u1ef1 gia t\u0103ng \u0111i\u1ec7n tr\u1edf b\u00ean trong c\u1ee7a t\u1eebng cell ri\u00eang l\u1ebb trong qu\u00e1 tr\u00ecnh tu\u1ea7n ho\u00e0n, v\u00e0 s\u1ef1 s\u1ee5t gi\u1ea3m \u0111i\u1ec7n \u00e1p k\u1ebft qu\u1ea3 c\u0169ng kh\u00f4ng \u0111\u1ed3ng \u0111\u1ec1u, d\u1eabn \u0111\u1ebfn s\u1ef1 gia t\u0103ng s\u1ef1 kh\u00f4ng nh\u1ea5t qu\u00e1n \u0111i\u1ec7n \u00e1p gi\u1eefa c\u00e1c cell ri\u00eang l\u1ebb; M\u1eb7t kh\u00e1c, s\u1ef1 gia t\u0103ng \u0111i\u1ec7n tr\u1edf b\u00ean trong ti\u00eau th\u1ee5 c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn s\u1ef1 gia t\u0103ng nhi\u1ec7t \u0111\u1ed9 b\u00ean trong c\u1ee7a t\u1eebng pin, d\u1eabn \u0111\u1ebfn s\u1ef1 gi\u1ea3m t\u00ednh \u0111\u1ed3ng nh\u1ea5t nhi\u1ec7t \u0111\u1ed9 trong h\u1ec7 th\u1ed1ng pin. S\u1ef1 ch\u00eanh l\u1ec7ch nhi\u1ec7t \u0111\u1ed9 s\u1ebd l\u00e0m tr\u1ea7m tr\u1ecdng th\u00eam s\u1ef1 kh\u00f4ng nh\u1ea5t qu\u00e1n \u0111i\u1ec7n \u00e1p gi\u1eefa c\u00e1c pin ri\u00eang l\u1ebb.<\/span><\/p>\n

Do \u0111\u00f3, khi v\u00f2ng \u0111\u1eddi chu k\u1ef3 ti\u1ebfn tri\u1ec3n, s\u1ef1 kh\u00e1c bi\u1ec7t v\u1ec1 \u0111i\u1ec7n tr\u1edf b\u00ean trong gi\u1eefa c\u00e1c monome s\u1ebd d\u1eabn \u0111\u1ebfn s\u1ef1 gia t\u0103ng s\u1ef1 kh\u00f4ng nh\u1ea5t qu\u00e1n v\u1ec1 \u0111i\u1ec7n \u00e1p gi\u1eefa c\u00e1c monome. \u0110\u1ed3ng th\u1eddi, s\u1ef1 gia t\u0103ng \u0111i\u1ec7n tr\u1edf b\u00ean trong s\u1ebd g\u00e2y ra s\u1ef1 gia t\u0103ng sinh nhi\u1ec7t v\u00e0 ch\u00eanh l\u1ec7ch nhi\u1ec7t \u0111\u1ed9 l\u1edbn h\u01a1n, ti\u1ebfp t\u1ee5c d\u1eabn \u0111\u1ebfn s\u1ef1 gi\u1ea3m t\u00ednh nh\u1ea5t qu\u00e1n v\u1ec1 \u0111i\u1ec7n \u00e1p gi\u1eefa c\u00e1c monome; Hi\u1ec7u \u1ee9ng gh\u00e9p n\u1ed1i gi\u1eefa \u0111i\u1ec7n tr\u1edf b\u00ean trong v\u00e0 nhi\u1ec7t \u0111\u1ed9 s\u1ebd l\u00e0m tr\u1ea7m tr\u1ecdng th\u00eam s\u1ef1 kh\u00f4ng nh\u1ea5t qu\u00e1n gi\u1eefa c\u00e1c \u0111i\u1ec7n \u00e1p ri\u00eang l\u1ebb, l\u00e0m gi\u1ea3m kh\u1ea3 n\u0103ng x\u1ea3 c\u1ee7a h\u1ec7 th\u1ed1ng pin v\u00e0 r\u00fat ng\u1eafn v\u00f2ng \u0111\u1eddi c\u1ee7a n\u00f3.<\/span><\/p>\n

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

(1) \u0110\u1ed1i v\u1edbi h\u1ec7 th\u1ed1ng pin, \u0111i\u1ec7n tr\u1edf b\u00ean trong c\u1ee7a c\u00e1c cell pin t\u0103ng l\u00ean, ch\u00eanh l\u1ec7ch \u00e1p su\u1ea5t gi\u1eefa c\u00e1c cell t\u0103ng l\u00ean do t\u00e1c \u0111\u1ed9ng c\u1ee7a s\u1ef1 ph\u00e2n chia \u0111i\u1ec7n \u00e1p. \u0110\u1ed3ng th\u1eddi, \u0111i\u1ec7n tr\u1edf b\u00ean trong t\u0103ng l\u00ean l\u00e0m t\u0103ng nhi\u1ec7t l\u01b0\u1ee3ng t\u1ecfa ra b\u00ean trong pin, ch\u00eanh l\u1ec7ch nhi\u1ec7t \u0111\u1ed9 b\u00ean trong h\u1ec7 th\u1ed1ng pin s\u1ebd l\u00e0m t\u0103ng th\u00eam ch\u00eanh l\u1ec7ch \u00e1p su\u1ea5t gi\u1eefa c\u00e1c cell pin.<\/span><\/p>\n

Hi\u1ec7u \u1ee9ng gh\u00e9p n\u1ed1i gi\u1eefa nh\u1eefng thay \u0111\u1ed5i v\u1ec1 \u0111i\u1ec7n tr\u1edf b\u00ean trong c\u1ee7a t\u1eebng cell pin v\u00e0 nhi\u1ec7t \u0111\u1ed9 kh\u00f4ng \u0111\u1ed3ng \u0111\u1ec1u trong h\u1ec7 th\u1ed1ng pin d\u1eabn \u0111\u1ebfn s\u1ef1 gia t\u0103ng nhanh ch\u00f3ng ch\u00eanh l\u1ec7ch \u00e1p su\u1ea5t gi\u1eefa t\u1eebng cell pin, t\u1eeb \u0111\u00f3 d\u1eabn \u0111\u1ebfn s\u1ef1 suy gi\u1ea3m dung l\u01b0\u1ee3ng nhanh ch\u00f3ng c\u1ee7a h\u1ec7 th\u1ed1ng pin v\u00e0 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn tu\u1ed5i th\u1ecd c\u1ee7a pin.<\/span><\/p>\n

(2) Kh\u1ea3 n\u0103ng x\u1ea3 c\u1ee7a h\u1ec7 th\u1ed1ng pin n\u0103ng l\u01b0\u1ee3ng h\u1ec7 th\u1ed1ng ba th\u00e0nh ph\u1ea7n n\u00e0y trong qu\u00e1 tr\u00ecnh tu\u1ea7n ho\u00e0n kh\u00f4ng ph\u1ee5 thu\u1ed9c v\u00e0o s\u1ef1 thay \u0111\u1ed5i c\u1ee7a c\u00e1c \u0111i\u1ec1u ki\u1ec7n tu\u1ea7n ho\u00e0n theo s\u1ed1 chu k\u1ef3 v\u00e0 tu\u00e2n theo lu\u1eadt suy gi\u1ea3m h\u00e0m l\u0169y th\u1eeba. M\u00f4 h\u00ecnh tu\u1ed5i th\u1ecd h\u1ec7 th\u1ed1ng pin n\u0103ng l\u01b0\u1ee3ng n\u00e0y c\u00f3 th\u1ec3 d\u1ef1 \u0111o\u00e1n v\u00e0 \u0111\u00e1nh gi\u00e1 tu\u1ed5i th\u1ecd th\u1ef1c t\u1ebf c\u1ee7a h\u1ec7 th\u1ed1ng pin n\u0103ng l\u01b0\u1ee3ng, \u0111\u1ed3ng th\u1eddi cung c\u1ea5p c\u01a1 s\u1edf cho vi\u1ec7c s\u1eed d\u1ee5ng h\u1ee3p l\u00fd h\u1ec7 th\u1ed1ng pin.<\/span><\/p>\n

(3) \u0110\u1ed1i v\u1edbi monome pin \u0111i\u1ec7n, t\u1ef7 l\u1ec7 duy tr\u00ec dung l\u01b0\u1ee3ng c\u1ee7a chu k\u1ef3 tu\u1ed5i th\u1ecd 100% DOD v\u00e0 80% DOD \u1edf nhi\u1ec7t \u0111\u1ed9 ph\u00f2ng \u0111\u1ec1u l\u1edbn h\u01a1n t\u1ef7 l\u1ec7 duy tr\u00ec dung l\u01b0\u1ee3ng t\u01b0\u01a1ng \u1ee9ng c\u1ee7a h\u1ec7 th\u1ed1ng pin. \u0110\u1ed3ng th\u1eddi, t\u1ef7 l\u1ec7 duy tr\u00ec dung l\u01b0\u1ee3ng c\u1ee7a monome pin \u0111i\u1ec7n sau chu k\u1ef3 tu\u1ed5i th\u1ecd 100% DOD l\u1edbn h\u01a1n t\u1ef7 l\u1ec7 sau chu k\u1ef3 tu\u1ed5i th\u1ecd 80% DOD \u1edf c\u1ea3 nhi\u1ec7t \u0111\u1ed9 ph\u00f2ng v\u00e0 40 \u00b0 C. Ngo\u00e0i ra, t\u1ef7 l\u1ec7 suy gi\u1ea3m dung l\u01b0\u1ee3ng c\u1ee7a chu k\u1ef3 tu\u1ed5i th\u1ecd \u1edf 40 \u00b0 C l\u1edbn h\u01a1n \u1edf nhi\u1ec7t \u0111\u1ed9 ph\u00f2ng, cho th\u1ea5y pin s\u1ebd b\u1ecb gi\u1ea3m dung l\u01b0\u1ee3ng nhanh \u1edf nhi\u1ec7t \u0111\u1ed9 cao, L\u00e0m gi\u1ea3m tu\u1ed5i th\u1ecd chu k\u1ef3 pin.<\/span><\/p>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

2.2 Ph\u00e2n t\u00edch d\u1eef li\u1ec7u th\u1eed nghi\u1ec7m chu k\u1ef3 cho h\u1ec7 th\u1ed1ng pin \u0111i\u1ec7n (1) H\u1ec7 th\u1ed1ng pin \u0111i\u1ec7n 100% s\u1ea1c x\u1ea3 chu k\u1ef3 s\u00e2u H\u1ec7 th\u1ed1ng pin \u0111i\u1ec7n \u0111\u00e3 tr\u1ea3i qua 170 l\u1ea7n th\u1eed nghi\u1ec7m tu\u1ed5i th\u1ecd chu k\u1ef3 \u1edf \u0111\u1ed9 s\u00e2u s\u1ea1c v\u00e0 x\u1ea3 100% (100% DOD), v\u1edbi nhi\u1ec7t \u0111\u1ed9 ch\u1ea5t l\u00e0m m\u00e1t<\/p>\n","protected":false},"author":1,"featured_media":19604,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[88],"tags":[],"class_list":["post-19603","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\/19603","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=19603"}],"version-history":[{"count":2,"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/posts\/19603\/revisions"}],"predecessor-version":[{"id":21923,"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/posts\/19603\/revisions\/21923"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/media\/19604"}],"wp:attachment":[{"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/media?parent=19603"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/categories?post=19603"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/tags?post=19603"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}