{"id":19634,"date":"2023-11-23T02:25:03","date_gmt":"2023-11-23T02:25:03","guid":{"rendered":"http:\/\/dgbellvietnam.com\/lithium-ion-power-battery-thermal-uniformity-test\/"},"modified":"2024-10-21T16:23:22","modified_gmt":"2024-10-21T09:23:22","slug":"lithium-ion-power-battery-thermal-uniformity-test","status":"publish","type":"post","link":"https:\/\/dgbellvietnam.com\/en\/lithium-ion-power-battery-thermal-uniformity-test\/","title":{"rendered":"Th\u1eed nghi\u1ec7m t\u00ednh \u0111\u1ed3ng nh\u1ea5t nhi\u1ec7t c\u1ee7a pin \u0111i\u1ec7n lithium-ion"},"content":{"rendered":"
\n

Trong qu\u00e1 tr\u00ecnh l\u00e1i xe \u0111i\u1ec7n, pin \u0111i\u1ec7n tr\u00ean xe li\u00ean t\u1ee5c s\u1ea1c v\u00e0 x\u1ea3, k\u00e8m theo l\u01b0\u1ee3ng nhi\u1ec7t t\u1ecfa ra l\u1edbn. Nhi\u1ec7t \u0111\u1ed9 c\u1ee7a pin \u0111i\u1ec7n c\u00f3 t\u00e1c \u0111\u1ed9ng \u0111\u00e1ng k\u1ec3 \u0111\u1ebfn t\u1ed1c \u0111\u1ed9 ph\u1ea3n \u1ee9ng \u0111i\u1ec7n h\u00f3a, kh\u1ea3 n\u0103ng ti\u1ebfp nh\u1eadn s\u1ea1c, \u0111\u1ed9 an to\u00e0n, tu\u1ed5i th\u1ecd chu k\u1ef3, c\u00f4ng su\u1ea5t ri\u00eang v\u00e0 n\u0103ng l\u01b0\u1ee3ng ri\u00eang.<\/span><\/span><\/p>\n

\u0110\u1ed3ng th\u1eddi, do \u0111i\u1ec1u ki\u1ec7n t\u1ea3n nhi\u1ec7t b\u00ean ngo\u00e0i, ph\u01b0\u01a1ng ph\u00e1p qu\u1ea3n l\u00fd nhi\u1ec7t v\u00e0 v\u1ecb tr\u00ed b\u1ed1 tr\u00ed kh\u00f4ng gian ri\u00eang l\u1ebb c\u1ee7a pin kh\u00e1c nhau n\u00ean s\u1ef1 ch\u00eanh l\u1ec7ch nhi\u1ec7t \u0111\u1ed9 gi\u1eefa c\u00e1c b\u1ed9 ph\u1eadn kh\u00e1c nhau c\u1ee7a monome trong b\u1ed9 pin v\u00e0 gi\u1eefa c\u00e1c monome kh\u00e1c nhau c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng nghi\u00eam tr\u1ecdng \u0111\u1ebfn t\u00ednh nh\u1ea5t qu\u00e1n c\u1ee7a hi\u1ec7u su\u1ea5t b\u1ed9 pin.<\/span><\/span><\/p>\n

Do \u0111\u00f3, c\u1ea7n ph\u1ea3i th\u1ef1c hi\u1ec7n c\u00e1c bi\u1ec7n ph\u00e1p truy\u1ec1n nhi\u1ec7t t\u0103ng c\u01b0\u1eddng b\u00ean trong b\u1ed9 pin \u0111\u1ec3 c\u1ea3i thi\u1ec7n t\u00ednh \u0111\u1ed3ng \u0111\u1ec1u nhi\u1ec7t \u0111\u1ed9 c\u1ee7a b\u1ec1 m\u1eb7t monome v\u00e0 t\u1ed5ng th\u1ec3. T\u1ea5m graphite c\u00f3 \u0111\u1ed9 d\u1eabn nhi\u1ec7t cao v\u1edbi GTS c\u00f3 \u0111\u1ed9 d\u1eabn nhi\u1ec7t cao, v\u1edbi m\u1eadt \u0111\u1ed9 th\u1ea5p, h\u1ec7 s\u1ed1 gi\u00e3n n\u1edf nhi\u1ec7t th\u1ea5p v\u00e0 b\u1ec1 m\u1eb7t t\u01b0\u01a1ng \u0111\u1ed1i m\u1ec1m, c\u00f3 th\u1ec3 l\u00e0m gi\u1ea3m hi\u1ec7u qu\u1ea3 \u0111i\u1ec7n tr\u1edf nhi\u1ec7t ti\u1ebfp x\u00fac, khi\u1ebfn n\u00f3 tr\u1edf th\u00e0nh lo\u1ea1i v\u1eadt li\u1ec7u carbon c\u00f3 \u0111\u1ed9 d\u1eabn nhi\u1ec7t cao m\u1edbi l\u00fd t\u01b0\u1edfng<\/span><\/span><\/p>\n

B\u00e0i vi\u1ebft n\u00e0y l\u1ea5y pin lithium-ion h\u00ecnh vu\u00f4ng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong xe \u0111i\u1ec7n l\u00e0m \u0111\u1ed1i t\u01b0\u1ee3ng nghi\u00ean c\u1ee9u. M\u1ed9t b\u1ed9 pin \u0111i\u1ec1u khi\u1ec3n c\u00f3 v\u00e0 kh\u00f4ng c\u00f3 GTS \u0111\u00e3 \u0111\u01b0\u1ee3c ch\u1ebf t\u1ea1o v\u00e0 m\u1ed9t b\u0103ng gh\u1ebf th\u1eed nghi\u1ec7m hi\u1ec7u \u1ee9ng nhi\u1ec7t \u0111\u00e3 \u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng cho b\u1ed9 pin. B\u1eb1ng c\u00e1ch ph\u00e2n t\u00edch nh\u1eefng thay \u0111\u1ed5i v\u1ec1 ch\u00eanh l\u1ec7ch nhi\u1ec7t \u0111\u1ed9 gi\u1eefa b\u1ec1 m\u1eb7t c\u1ee7a c\u00e1c cell pin v\u00e0 c\u00e1c v\u1ecb tr\u00ed kh\u00e1c nhau c\u1ee7a b\u1ed9 pin trong qu\u00e1 tr\u00ecnh x\u1ea3 d\u00f2ng \u0111i\u1ec7n kh\u00f4ng \u0111\u1ed5i, t\u00e1c \u0111\u1ed9ng c\u1ee7a GTS \u0111\u1ed1i v\u1edbi vi\u1ec7c c\u1ea3i thi\u1ec7n t\u00ednh \u0111\u1ed3ng \u0111\u1ec1u nhi\u1ec7t c\u1ee7a b\u1ed9 pin lithium-ion \u0111\u00e3 \u0111\u01b0\u1ee3c nghi\u00ean c\u1ee9u<\/span><\/span><\/p>\n

1 Ki\u1ec3m tra<\/span><\/span><\/strong><\/span><\/h1>\n

1.1 th\u00f4ng s\u1ed1 pin<\/span><\/span><\/span><\/h2>\n

K\u00edch th\u01b0\u1edbc: 180 mm x 100 mm x 32 mm<\/span><\/span><\/p>\n

Tr\u1ecdng l\u01b0\u1ee3ng: 1250 g<\/span><\/span><\/p>\n

\u0110i\u1ec7n \u00e1p: 3.2 V<\/span><\/span><\/p>\n

Dung l\u01b0\u1ee3ng: 40 Ah<\/span><\/span><\/p>\n

\u0110i\u1ec7n tr\u1edf trong : \u22642\u03a9<\/span><\/span><\/p>\n

1.2 Thi\u1ebft k\u1ebf c\u1ea5u tr\u00fac c\u1ee7a b\u1ed9 pin<\/span><\/span><\/span><\/h2>\n

\u0110\u1ec3 ki\u1ec3m ch\u1ee9ng t\u00e1c \u0111\u1ed9ng c\u1ee7a GTS l\u00ean t\u00ednh \u0111\u1ed3ng \u0111\u1ec1u nhi\u1ec7t c\u1ee7a c\u00e1c monome pin lithium-ion v\u00e0 c\u1ee5m pin, hai lo\u1ea1i c\u1ee5m pin c\u00f3 v\u00e0 kh\u00f4ng c\u00f3 GTS \u0111\u00e3 \u0111\u01b0\u1ee3c s\u1ea3n xu\u1ea5t. C\u1ee5m pin A bao g\u1ed3m s\u00e1u pin lithium s\u1eaft phosphate \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i n\u1ed1i ti\u1ebfp, v\u1edbi c\u00e1c c\u1ea3m bi\u1ebfn nhi\u1ec7t \u0111\u1ed9 g\u1eafn tr\u00ean b\u1ec1 m\u1eb7t c\u1ee7a c\u00e1c monome v\u00e0 v\u1eadt li\u1ec7u c\u00e1ch \u0111i\u1ec7n PET \u1edf ngo\u1ea1i vi. C\u1ee5m pin B \u0111\u00f3ng vai tr\u00f2 l\u00e0 nh\u00f3m th\u1eed nghi\u1ec7m \u0111\u1ed1i ch\u1ee9ng cho c\u1ee5m pin A. GTS \u0111\u01b0\u1ee3c ph\u00e2n b\u1ed5 \u0111\u1ed3ng \u0111\u1ec1u tr\u00ean m\u1ed7i m\u1eb7t c\u1ee7a m\u1ed7i cell pin, t\u1ed5ng c\u1ed9ng c\u00f3 7 cell. K\u00edch th\u01b0\u1edbc c\u1ee7a m\u1ed7i GTS l\u00e0 180 mm x 0,27 mm x 100 mm. \u0110\u1ec3 gi\u1ea3m t\u00e1c \u0111\u1ed9ng c\u1ee7a lu\u1ed3ng kh\u00f4ng kh\u00ed ph\u00eda tr\u00ean l\u1ed3ng \u1ea5p l\u00ean s\u1ef1 ph\u00e2n b\u1ed1 nhi\u1ec7t \u0111\u1ed9 b\u00ean trong c\u1ee5m pin, m\u1ed9t n\u1eafp \u0111\u1eady pin \u0111\u00e3 \u0111\u01b0\u1ee3c l\u1eafp ph\u00eda tr\u00ean c\u1ee5m pin \u0111\u1ec3 b\u1ecbt k\u00edn trong qu\u00e1 tr\u00ecnh th\u1eed nghi\u1ec7m.<\/span><\/span><\/p>\n

1.3 Thi\u1ebft b\u1ecb th\u1eed nghi\u1ec7m<\/span><\/span><\/span><\/h2>\n

M\u1ed9t b\u0103ng gh\u1ebf th\u1eed nghi\u1ec7m \u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng \u0111\u1ec3 ki\u1ec3m tra hi\u1ec7u su\u1ea5t nhi\u1ec7t c\u1ee7a b\u1ed9 pin trong qu\u00e1 tr\u00ecnh s\u1ea1c v\u00e0 x\u1ea3. Trong s\u1ed1 \u0111\u00f3, t\u1ea3i \u0111i\u1ec7n t\u1eed l\u00e0 pin. Bu\u1ed3ng nhi\u1ec7t \u0111\u1ed9 kh\u00f4ng \u0111\u1ed5i l\u00e0 <\/span><\/span>bu\u1ed3ng th\u1eed nghi\u1ec7m \u0111\u1ed9 \u1ea9m nhi\u1ec7t \u0111\u1ed9 cao v\u00e0 th\u1ea5p DGBELL<\/span><\/span><\/a> , v\u1edbi bi\u00ean \u0111\u1ed9 nhi\u1ec7t \u0111\u1ed9 l\u00e0 0,3 \u2103 {-40~100 \u2103). Thi\u1ebft b\u1ecb thu th\u1eadp nhi\u1ec7t \u0111\u1ed9 c\u1eb7p nhi\u1ec7t \u0111i\u1ec7n: C\u1ea3m bi\u1ebfn nhi\u1ec7t \u0111\u1ed9 l\u00e0 c\u1eb7p nhi\u1ec7t \u0111i\u1ec7n lo\u1ea1i K, v\u1edbi \u0111\u1ed9 ch\u00ednh x\u00e1c l\u00e0 \u00b1 0,5 \u2103.<\/span><\/span><\/p>\n

<\/p>\n

1.4 Quy tr\u00ecnh th\u1eed nghi\u1ec7m<\/span><\/span><\/span><\/h2>\n

X\u00e2y d\u1ef1ng m\u1ed9t b\u0103ng gh\u1ebf th\u1eed nghi\u1ec7m v\u00e0 vi\u1ebft m\u1ed9t ch\u01b0\u01a1ng tr\u00ecnh \u0111i\u1ec1u khi\u1ec3n x\u1ea3 d\u00f2ng \u0111i\u1ec7n kh\u00f4ng \u0111\u1ed5i c\u1ee7a pin. Tr\u01b0\u1edbc khi th\u1eed nghi\u1ec7m, t\u1ed5ng \u0111i\u1ec7n \u00e1p c\u1ee7a s\u00e1u pin l\u00e0 19,62 V v\u00e0 nhi\u1ec7t \u0111\u1ed9 c\u1ee7a l\u1ed3ng \u1ea5p \u0111\u01b0\u1ee3c \u0111\u1eb7t \u1edf m\u1ee9c 18 \u2103. Khi nhi\u1ec7t \u0111\u1ed9 c\u1ee7a \u0111i\u1ec3m \u0111o nhi\u1ec7t \u0111i\u1ec7n tr\u1edf ti\u1ebfp c\u1eadn 18 \u2103 v\u00e0 \u1ed5n \u0111\u1ecbnh, qu\u00e1 tr\u00ecnh x\u1ea3 d\u00f2ng \u0111i\u1ec7n kh\u00f4ng \u0111\u1ed5i 1 C (I = – 40 A) \u0111\u00e3 \u0111\u01b0\u1ee3c b\u1eaft \u0111\u1ea7u. Trong th\u1eddi gian n\u00e0y, t\u1ea7n s\u1ed1 l\u1ea5y m\u1eabu c\u1ee7a b\u1ed9 thu t\u00edn hi\u1ec7u nhi\u1ec7t \u0111i\u1ec7n tr\u1edf l\u00e0 4 gi\u00e2y. Sau khi \u0111i\u1ec7n \u00e1p c\u1eaft c\u1ee7a<\/span><\/span><\/p>\n

Qu\u00e1 tr\u00ecnh x\u1ea3 d\u00f2ng \u0111i\u1ec7n kh\u00f4ng \u0111\u1ed5i 15,6 V, 1 C \u0111\u00e3 k\u1ebft th\u00fac v\u00e0 d\u1eef li\u1ec7u \u0111\u00e3 \u0111\u01b0\u1ee3c l\u01b0u.<\/span><\/span><\/p>\n

2 K\u1ebft qu\u1ea3 th\u1eed nghi\u1ec7m v\u00e0 ph\u00e2n t\u00edch<\/span><\/span><\/strong><\/span><\/h1>\n

2.1 \u0110\u1ed9 \u0111\u1ed3ng \u0111\u1ec1u nhi\u1ec7t c\u1ee7a b\u1ec1 m\u1eb7t cell pin<\/span><\/span><\/span><\/h2>\n

Trong qu\u00e1 tr\u00ecnh ho\u1ea1t \u0111\u1ed9ng c\u1ee7a pin lithium-ion, tai c\u1ef1c v\u00e0 t\u00e2m c\u1ee7a pin l\u00e0 c\u00e1c \u0111i\u1ec3m nhi\u1ec7t \u0111\u1ed9 \u0111\u1ea1i di\u1ec7n. Do \u0111\u00f3, hai \u0111i\u1ec3m \u0111o \u0111\u1ed1i x\u1ee9ng g\u1ea7n tai d\u01b0\u01a1ng v\u00e0 tai \u00e2m \u0111\u01b0\u1ee3c ch\u1ecdn \u0111\u1ec3 nghi\u00ean c\u1ee9u s\u1ef1 ch\u00eanh l\u1ec7ch nhi\u1ec7t \u0111\u1ed9 theo h\u01b0\u1edbng ngang c\u1ee7a cell pin. Ch\u1ecdn hai \u0111i\u1ec3m \u0111o tr\u00ean \u0111\u01b0\u1eddng t\u00e2m th\u1eb3ng \u0111\u1ee9ng c\u1ee7a b\u1ec1 m\u1eb7t cell pin, n\u1eb1m \u1edf t\u00e2m c\u1ee7a pin v\u00e0 g\u1ea7n \u0111\u1ec9nh c\u1ee7a pin, \u0111\u1ec3 nghi\u00ean c\u1ee9u s\u1ef1 ch\u00eanh l\u1ec7ch nhi\u1ec7t \u0111\u1ed9 theo h\u01b0\u1edbng th\u1eb3ng \u0111\u1ee9ng<\/span><\/span><\/p>\n

Khi x\u1ea3 \u1edf t\u1ed1c \u0111\u1ed9 1 C, ph\u00e2n t\u00edch m\u1ed1i quan h\u1ec7 gi\u1eefa gi\u00e1 tr\u1ecb tuy\u1ec7t \u0111\u1ed1i c\u1ee7a ch\u00eanh l\u1ec7ch nhi\u1ec7t \u0111\u1ed9 theo h\u01b0\u1edbng ngang c\u1ee7a b\u1ec1 m\u1eb7t cell \u0111\u01a1n c\u1ee7a pin v\u00e0 th\u1eddi gian x\u1ea3, c\u00f3 th\u1ec3 th\u1ea5y r\u1eb1ng nhi\u1ec7t \u0111\u1ed9 \u1edf ph\u00eda b\u00ean tr\u00e1i v\u00e0 b\u00ean ph\u1ea3i theo h\u01b0\u1edbng ngang c\u1ee7a b\u1ec1 m\u1eb7t cell \u0111\u01a1n c\u1ee7a b\u1ed9 pin A l\u00e0 kh\u00f4ng \u0111\u1ed3ng \u0111\u1ec1u, v\u1edbi ch\u00eanh l\u1ec7ch nhi\u1ec7t \u0111\u1ed9 kho\u1ea3ng 0,18 \u2103. Tuy nhi\u00ean, ch\u00eanh l\u1ec7ch nhi\u1ec7t \u0111\u1ed9 theo h\u01b0\u1edbng ngang c\u1ee7a b\u1ec1 m\u1eb7t cell \u0111\u01a1n c\u1ee7a b\u1ed9 pin B ch\u1ec9 kho\u1ea3ng 0,05 \u2103, \u00edt h\u01a1n 70% so v\u1edbi b\u1ed9 pin A, cho th\u1ea5y GTS c\u00f3 th\u1ec3 \u0111\u00f3ng vai tr\u00f2 trong vi\u1ec7c ph\u00e2n ph\u1ed1i nhi\u1ec7t t\u00e1c \u0111\u1ed9ng theo chi\u1ec1u ngang.<\/span><\/span><\/p>\n

Khi x\u1ea3 \u1edf t\u1ed1c \u0111\u1ed9 1 C, ph\u00e2n t\u00edch bi\u1ec3u \u0111\u1ed3 ph\u00e2n t\u00e1n c\u1ee7a ch\u00eanh l\u1ec7ch nhi\u1ec7t \u0111\u1ed9 tuy\u1ec7t \u0111\u1ed1i theo ph\u01b0\u01a1ng th\u1eb3ng \u0111\u1ee9ng tr\u00ean b\u1ec1 m\u1eb7t c\u1ee7a cell pin, c\u00f3 th\u1ec3 th\u1ea5y r\u1eb1ng s\u1ef1 thay \u0111\u1ed5i nhi\u1ec7t \u0111\u1ed9 theo ph\u01b0\u01a1ng th\u1eb3ng \u0111\u1ee9ng c\u1ee7a b\u1ec1 m\u1eb7t \u0111\u01a1n c\u1ee7a c\u1ee5m pin A nghi\u00eam tr\u1ecdng h\u01a1n v\u00e0 ch\u00eanh l\u1ec7ch nhi\u1ec7t \u0111\u1ed9 t\u1ed1i \u0111a \u0111\u1ea1t 0,45 \u2103. Ch\u00eanh l\u1ec7ch nhi\u1ec7t \u0111\u1ed9 theo ph\u01b0\u01a1ng th\u1eb3ng \u0111\u1ee9ng c\u1ee7a b\u1ec1 m\u1eb7t \u0111\u01a1n c\u1ee7a c\u1ee5m pin B ti\u1ebfp t\u1ee5c duy tr\u00ec \u1edf m\u1ee9c kho\u1ea3ng 0,05 \u2103. Sau 2700 gi\u00e2y, ch\u00eanh l\u1ec7ch nhi\u1ec7t \u0111\u1ed9 b\u1eaft \u0111\u1ea7u t\u0103ng l\u00ean theo s\u1ef1 t\u00edch t\u1ee5 nhi\u1ec7t, v\u1edbi gi\u00e1 tr\u1ecb t\u1ed1i \u0111a l\u00e0 0,26 \u2103, nh\u01b0ng ch\u1ec9 b\u1eb1ng 58% so v\u1edbi c\u1ee5m pin A. \u0110i\u1ec1u n\u00e0y ch\u1ec9 ra r\u1eb1ng GTS c\u0169ng c\u00f3 th\u1ec3 \u0111\u00f3ng vai tr\u00f2 trong s\u1ef1 ph\u00e2n ph\u1ed1i nhi\u1ec7t trung b\u00ecnh theo ph\u01b0\u01a1ng th\u1eb3ng \u0111\u1ee9ng.<\/span><\/span><\/p>\n

Qua so s\u00e1nh, c\u00f3 th\u1ec3 th\u1ea5y r\u1eb1ng trong qu\u00e1 tr\u00ecnh x\u1ea3 t\u1ed1c \u0111\u1ed9 1 C, ch\u00eanh l\u1ec7ch nhi\u1ec7t \u0111\u1ed9 theo ph\u01b0\u01a1ng ngang tr\u00ean b\u1ec1 m\u1eb7t cell pin nh\u1ecf h\u01a1n ch\u00eanh l\u1ec7ch nhi\u1ec7t \u0111\u1ed9 theo ph\u01b0\u01a1ng th\u1eb3ng \u0111\u1ee9ng v\u00e0 s\u1ef1 dao \u0111\u1ed9ng c\u1ee7a ch\u00eanh l\u1ec7ch nhi\u1ec7t \u0111\u1ed9 theo ph\u01b0\u01a1ng th\u1eb3ng \u0111\u1ee9ng nghi\u00eam tr\u1ecdng h\u01a1n, \u0111i\u1ec1u n\u00e0y li\u00ean quan \u0111\u1ebfn c\u1ea5u tr\u00fac v\u00e0 k\u00edch th\u01b0\u1edbc v\u1eadt l\u00fd c\u1ee7a pin. Sau khi b\u1ed1 tr\u00ed GTS tr\u00ean b\u1ec1 m\u1eb7t cell pin, ch\u00eanh l\u1ec7ch nhi\u1ec7t \u0111\u1ed9 theo ph\u01b0\u01a1ng ngang v\u00e0 ph\u01b0\u01a1ng th\u1eb3ng \u0111\u1ee9ng tr\u00ean b\u1ec1 m\u1eb7t cell pin l\u00e0 t\u01b0\u01a1ng t\u1ef1 nhau v\u00e0 duy tr\u00ec trong ph\u1ea1m vi nh\u1ecf, cho th\u1ea5y GTS c\u00f3 th\u1ec3 c\u1ea3i thi\u1ec7n hi\u1ec7u qu\u1ea3 t\u00ednh \u0111\u1ed3ng nh\u1ea5t nhi\u1ec7t c\u1ee7a b\u1ec1 m\u1eb7t cell.<\/span><\/span><\/p>\n

2.2 \u0110\u1ed9 \u0111\u1ed3ng \u0111\u1ec1u nhi\u1ec7t b\u00ean trong c\u1ee7a b\u1ed9 pin<\/span><\/span><\/span><\/h2>\n

B\u1ed1n b\u1ed9 gi\u00e1 tr\u1ecb ch\u00eanh l\u1ec7ch nhi\u1ec7t \u0111\u1ed9 nh\u1ecf h\u01a1n, cho th\u1ea5y khi pin kh\u00f4ng ho\u1ea1t \u0111\u1ed9ng, GTS c\u00f3 th\u1ec3 c\u1ea3i thi\u1ec7n t\u00ednh \u0111\u1ed3ng nh\u1ea5t c\u1ee7a nhi\u1ec7t \u0111\u1ed9 c\u1ee7a b\u1ed9 pin, c\u00f3 l\u1ee3i cho vi\u1ec7c k\u00e9o d\u00e0i tu\u1ed5i th\u1ecd l\u01b0u tr\u1eef c\u1ee7a pin. Khi x\u1ea3 s\u00e2u h\u01a1n, nhi\u1ec7t b\u00ean trong b\u1ed9 pin t\u00edch t\u1ee5 d\u1ea7n v\u00e0 gi\u00e1 tr\u1ecb ch\u00eanh l\u1ec7ch nhi\u1ec7t \u0111\u1ed9 th\u01b0\u1eddng t\u0103ng l\u00ean. Tuy nhi\u00ean, so v\u1edbi b\u1ed9 pin A, xu h\u01b0\u1edbng ch\u00eanh l\u1ec7ch nhi\u1ec7t \u0111\u1ed9 c\u1ee7a b\u1ed9 pin B nh\u1ea5t qu\u00e1n h\u01a1n v\u00e0 gi\u00e1 tr\u1ecb ch\u00eanh l\u1ec7ch nhi\u1ec7t \u0111\u1ed9 t\u1ed1i \u0111a nh\u1ecf h\u01a1n (0,41 \u2103), trong khi b\u1ed9 pin A l\u00e0 0,47 \u2103.<\/span><\/span><\/p>\n

Ch\u00eanh l\u1ec7ch nhi\u1ec7t \u0111\u1ed9 trung b\u00ecnh c\u00e0ng nh\u1ecf th\u00ec t\u00ednh \u0111\u1ed3ng \u0111\u1ec1u nhi\u1ec7t \u0111\u1ed9 b\u00ean trong kh\u1ed1i pin c\u00e0ng t\u1ed1t. T\u1eeb d\u1eef li\u1ec7u th\u1ef1c nghi\u1ec7m, c\u00f3 th\u1ec3 th\u1ea5y r\u1eb1ng tr\u01b0\u1edbc 2600 gi\u00e2y, ch\u00eanh l\u1ec7ch nhi\u1ec7t \u0111\u1ed9 trung b\u00ecnh trong kh\u1ed1i pin B nh\u1ecf h\u01a1n v\u00e0 m\u1ee9c t\u0103ng t\u01b0\u01a1ng \u0111\u1ed1i nh\u1eb9 nh\u00e0ng, cho th\u1ea5y GTS c\u00f3 th\u1ec3 c\u1ea3i thi\u1ec7n t\u00ednh \u0111\u1ed3ng \u0111\u1ec1u nhi\u1ec7t c\u1ee7a to\u00e0n b\u1ed9 kh\u1ed1i pin.<\/span><\/span><\/p>\n

Bi\u1ec3u \u0111\u1ed3 ph\u00e2n t\u00e1n ph\u01b0\u01a1ng sai cho th\u1ea5y gi\u00e1 tr\u1ecb ph\u01b0\u01a1ng sai c\u00e0ng l\u1edbn th\u00ec \u0111\u1ed9 ph\u00e2n t\u00e1n c\u1ee7a c\u00e1c gi\u00e1 tr\u1ecb \u0111o nhi\u1ec7t \u0111\u1ed9 c\u1ee7a n\u0103m c\u1eb7p nhi\u1ec7t \u0111i\u1ec7n t\u1ea1i th\u1eddi \u0111i\u1ec3m \u0111\u00f3 c\u00e0ng l\u1edbn, \u0111i\u1ec1u n\u00e0y c\u00f3 ngh\u0129a l\u00e0 \u0111\u1ed9 \u0111\u1ed3ng \u0111\u1ec1u nhi\u1ec7t \u0111\u1ed9 c\u1ee7a b\u1ed9 pin c\u00e0ng k\u00e9m. Gi\u00e1 tr\u1ecb ph\u01b0\u01a1ng sai c\u1ee7a b\u1ed9 pin B v\u1eabn \u1edf m\u1ee9c kho\u1ea3ng 0,18, v\u1edbi gi\u00e1 tr\u1ecb t\u1ed1i \u0111a ch\u1ec9 l\u00e0 0,36. Ph\u01b0\u01a1ng sai t\u1ed1i \u0111a c\u1ee7a b\u1ed9 pin A \u0111\u1ea1t 120, g\u1ea5p 3,33 l\u1ea7n so v\u1edbi b\u1ed9 pin B, cho th\u1ea5y GTS c\u00f3 th\u1ec3 c\u1ea3i thi\u1ec7n hi\u1ec7u qu\u1ea3 \u0111\u1ed9 \u0111\u1ed3ng \u0111\u1ec1u nhi\u1ec7t \u0111\u1ed9 b\u00ean trong b\u1ed9 pin<\/span><\/span><\/p>\n

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

B\u1eb1ng c\u00e1ch so s\u00e1nh v\u00e0 ph\u00e2n t\u00edch s\u1ef1 kh\u00e1c bi\u1ec7t nhi\u1ec7t \u0111\u1ed9 b\u1ec1 m\u1eb7t c\u1ee7a b\u1ed9 pin c\u00f3 v\u00e0 kh\u00f4ng c\u00f3 GTS trong \u0111i\u1ec1u ki\u1ec7n x\u1ea3 d\u00f2ng \u0111i\u1ec7n kh\u00f4ng \u0111\u1ed5i 1 C, t\u00e1c \u0111\u1ed9ng c\u1ee7a c\u00e1c t\u1ea5m graphite c\u00f3 \u0111\u1ed9 d\u1eabn nhi\u1ec7t cao \u0111\u1ed1i v\u1edbi vi\u1ec7c c\u1ea3i thi\u1ec7n t\u00ednh \u0111\u1ed3ng \u0111\u1ec1u nhi\u1ec7t \u0111\u1ed9 c\u1ee7a pin vu\u00f4ng \u0111\u00e3 \u0111\u01b0\u1ee3c nghi\u00ean c\u1ee9u. C\u00e1c k\u1ebft lu\u1eadn sau \u0111\u00e2y \u0111\u00e3 \u0111\u01b0\u1ee3c r\u00fat ra.<\/span><\/span><\/p>\n

(1) Trong qu\u00e1 tr\u00ecnh x\u1ea3, ch\u00eanh l\u1ec7ch nhi\u1ec7t \u0111\u1ed9 theo chi\u1ec1u ngang tr\u00ean b\u1ec1 m\u1eb7t c\u1ee7a cell pin nh\u1ecf h\u01a1n ch\u00eanh l\u1ec7ch nhi\u1ec7t \u0111\u1ed9 theo chi\u1ec1u d\u1ecdc, \u0111i\u1ec1u n\u00e0y c\u00f3 ngh\u0129a l\u00e0 c\u00e1c t\u1ea5m than ch\u00ec c\u00f3 \u0111\u1ed9 d\u1eabn nhi\u1ec7t cao c\u00f3 th\u1ec3 l\u00e0m gi\u1ea3m hi\u1ec7u qu\u1ea3 ch\u00eanh l\u1ec7ch n\u00e0y, c\u00e2n b\u1eb1ng nhi\u1ec7t gi\u1eefa c\u00e1c b\u1ed9 ph\u1eadn kh\u00e1c nhau c\u1ee7a b\u1ec1 m\u1eb7t cell pin v\u00e0 c\u1ea3i thi\u1ec7n t\u00ednh \u0111\u1ed3ng \u0111\u1ec1u nhi\u1ec7t c\u1ee7a b\u1ec1 m\u1eb7t cell pin.<\/span><\/span><\/p>\n

(2) L\u00e0 m\u1ed9t bi\u1ec7n ph\u00e1p t\u0103ng c\u01b0\u1eddng truy\u1ec1n nhi\u1ec7t, c\u00e1c t\u1ea5m than ch\u00ec c\u00f3 \u0111\u1ed9 d\u1eabn nhi\u1ec7t cao c\u00f3 th\u1ec3 c\u1ea3i thi\u1ec7n hi\u1ec7u qu\u1ea3 t\u00ednh \u0111\u1ed3ng nh\u1ea5t nhi\u1ec7t b\u00ean trong c\u1ee5m pin v\u00e0 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng l\u00e0m bi\u1ec7n ph\u00e1p t\u0103ng c\u01b0\u1eddng truy\u1ec1n nhi\u1ec7t ph\u1ee5 tr\u1ee3 cho c\u00e1c h\u1ec7 th\u1ed1ng qu\u1ea3n l\u00fd nhi\u1ec7t c\u1ee5m pin \u00f4 t\u00f4 nh\u01b0 s\u1eed d\u1ee5ng v\u1eadt li\u1ec7u thay \u0111\u1ed5i pha cho t\u1ea5m l\u00e0m m\u00e1t, nh\u1eb1m c\u00e2n b\u1eb1ng s\u1ef1 ph\u00e2n ph\u1ed1i nhi\u1ec7t c\u1ee7a c\u1ee5m pin v\u00e0 c\u1ea3i thi\u1ec7n hi\u1ec7u su\u1ea5t c\u1ee7a h\u1ec7 th\u1ed1ng qu\u1ea3n l\u00fd nhi\u1ec7t<\/span><\/span><\/p>\n

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

Trong qu\u00e1 tr\u00ecnh l\u00e1i xe \u0111i\u1ec7n, pin \u0111i\u1ec7n tr\u00ean xe li\u00ean t\u1ee5c s\u1ea1c v\u00e0 x\u1ea3, k\u00e8m theo l\u01b0\u1ee3ng nhi\u1ec7t t\u1ecfa ra l\u1edbn. Nhi\u1ec7t \u0111\u1ed9 c\u1ee7a pin \u0111i\u1ec7n c\u00f3 t\u00e1c \u0111\u1ed9ng \u0111\u00e1ng k\u1ec3 \u0111\u1ebfn t\u1ed1c \u0111\u1ed9 ph\u1ea3n \u1ee9ng \u0111i\u1ec7n h\u00f3a, kh\u1ea3 n\u0103ng ti\u1ebfp nh\u1eadn s\u1ea1c, \u0111\u1ed9 an to\u00e0n, tu\u1ed5i th\u1ecd chu k\u1ef3, c\u00f4ng su\u1ea5t ri\u00eang v\u00e0<\/p>\n","protected":false},"author":1,"featured_media":19635,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[88],"tags":[],"class_list":["post-19634","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\/19634","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=19634"}],"version-history":[{"count":2,"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/posts\/19634\/revisions"}],"predecessor-version":[{"id":21947,"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/posts\/19634\/revisions\/21947"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/media\/19635"}],"wp:attachment":[{"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/media?parent=19634"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/categories?post=19634"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/tags?post=19634"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}