{"id":19579,"date":"2024-04-18T01:46:34","date_gmt":"2024-04-18T01:46:34","guid":{"rendered":"http:\/\/dgbellvietnam.com\/lithium-battery-high-temperature-aging-test\/"},"modified":"2024-10-13T10:28:45","modified_gmt":"2024-10-13T03:28:45","slug":"lithium-battery-high-temperature-aging-test","status":"publish","type":"post","link":"https:\/\/dgbellvietnam.com\/en\/lithium-battery-high-temperature-aging-test\/","title":{"rendered":"Th\u1eed nghi\u1ec7m l\u00e3o h\u00f3a nhi\u1ec7t \u0111\u1ed9 cao pin Lithium"},"content":{"rendered":"
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1. B\u1ed1i c\u1ea3nh nghi\u00ean c\u1ee9u<\/span><\/strong><\/span><\/h1>\n

\u0110\u1ec3 \u1ee9ng ph\u00f3 hi\u1ec7u qu\u1ea3 v\u1edbi nh\u1eefng thay \u0111\u1ed5i b\u1ea5t l\u1ee3i trong m\u00f4i tr\u01b0\u1eddng v\u00e0 kh\u00ed h\u1eadu, gi\u1ea3m ph\u00e1t th\u1ea3i kh\u00ed nh\u00e0 k\u00ednh v\u00e0 \u0111\u1ea1t \u0111\u01b0\u1ee3c m\u1ee5c ti\u00eau \u0111\u1ea1t \u0111\u1ec9nh carbon v\u00e0 trung h\u00f2a carbon c\u00e0ng s\u1edbm c\u00e0ng t\u1ed1t, c\u1ea5u tr\u00fac n\u0103ng l\u01b0\u1ee3ng \u0111ang chuy\u1ec3n \u0111\u1ed5i nhanh ch\u00f3ng. \u0110i\u1ec7n kh\u00ed h\u00f3a \u00f4 t\u00f4 \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng trong cu\u1ed9c c\u00e1ch m\u1ea1ng n\u0103ng l\u01b0\u1ee3ng n\u00e0y. Pin \u0111i\u1ec7n l\u00e0 b\u1ed9 l\u01b0u tr\u1eef n\u0103ng l\u01b0\u1ee3ng ch\u00ednh cho xe \u0111i\u1ec7n, \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i v\u00ec l\u1ee3i th\u1ebf v\u1ec1 n\u0103ng l\u01b0\u1ee3ng cao v\u00e0 tu\u1ed5i th\u1ecd d\u00e0i. Tuy nhi\u00ean, trong c\u00e1c \u1ee9ng d\u1ee5ng th\u1ef1c t\u1ebf c\u1ee7a xe, tr\u1ea1ng th\u00e1i b\u00ean trong c\u1ee7a pin thay \u0111\u1ed5i, d\u1eabn \u0111\u1ebfn hi\u1ec7u su\u1ea5t pin gi\u1ea3m v\u00e0 thay \u0111\u1ed5i c\u1eeda s\u1ed5 l\u00e0m vi\u1ec7c an to\u00e0n c\u1ee7a pin.<\/span><\/p>\n

\u0110i\u1ec1u ki\u1ec7n s\u1eed d\u1ee5ng, \u0111\u1eb7c bi\u1ec7t l\u00e0 nhi\u1ec7t \u0111\u1ed9, c\u00f3 t\u00e1c \u0111\u1ed9ng \u0111\u00e1ng k\u1ec3 \u0111\u1ebfn \u0111\u1ed9 an to\u00e0n nhi\u1ec7t c\u1ee7a pin. Hi\u1ec7n nay, nhi\u1ec7t \u0111\u1ed9 m\u00f9a h\u00e8 n\u00f3ng b\u1ee9c \u0111\u1eb7t ra th\u00e1ch th\u1ee9c nghi\u00eam tr\u1ecdng \u0111\u1ed1i v\u1edbi vi\u1ec7c s\u1eed d\u1ee5ng pin an to\u00e0n. Xe \u0111i\u1ec7n ti\u1ebfp x\u00fac v\u1edbi \u00e1nh n\u1eafng m\u1eb7t tr\u1eddi gay g\u1eaft s\u1ebd g\u1eb7p ph\u1ea3i nhi\u1ec7t \u0111\u1ed9 pin c\u1ef1c cao trong qu\u00e1 tr\u00ecnh s\u1ea1c, \u0111i\u1ec1u n\u00e0y \u1ea3nh h\u01b0\u1edfng nghi\u00eam tr\u1ecdng \u0111\u1ebfn vi\u1ec7c s\u1eed d\u1ee5ng pin an to\u00e0n. C\u00f4ng tr\u00ecnh n\u00e0y kh\u00e1m ph\u00e1 s\u1ef1 ti\u1ebfn h\u00f3a v\u1ec1 \u0111\u1ed9 an to\u00e0n nhi\u1ec7t c\u1ee7a pin lithium-ion ba th\u00e0nh ph\u1ea7n niken cao \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong \u0111i\u1ec1u ki\u1ec7n s\u1eed d\u1ee5ng \u1edf nhi\u1ec7t \u0111\u1ed9 cao, ti\u1ebft l\u1ed9 quy lu\u1eadt ti\u1ebfn h\u00f3a v\u1ec1 \u0111\u1ed9 an to\u00e0n nhi\u1ec7t c\u1ee7a pin lithium-ion.<\/span><\/p>\n

2. N\u1ed9i dung nghi\u00ean c\u1ee9u<\/span><\/strong><\/span><\/h1>\n

M\u1ed9t nghi\u00ean c\u1ee9u \u0111\u00e3 \u0111\u01b0\u1ee3c ti\u1ebfn h\u00e0nh v\u1ec1 \u0111\u1ed9 an to\u00e0n nhi\u1ec7t c\u1ee7a pin lithium-ion d\u1ea1ng g\u00f3i m\u1ec1m NMC631 trong qu\u00e1 tr\u00ecnh <\/span>l\u00e3o h\u00f3a<\/span><\/a> theo chu k\u1ef3 nhi\u1ec7t \u0111\u1ed9 cao. Th\u1eed nghi\u1ec7m sinh nhi\u1ec7t x\u1ea3 \u0111o\u1ea1n nhi\u1ec7t, th\u1eed nghi\u1ec7m ch\u1ea1y tr\u1ed1n nhi\u1ec7t \u0111o\u1ea1n nhi\u1ec7t v\u00e0 th\u1eed nghi\u1ec7m qu\u00e1 t\u1ea3i \u0111o\u1ea1n nhi\u1ec7t \u0111\u00e3 \u0111\u01b0\u1ee3c ti\u1ebfn h\u00e0nh khi SOH c\u1ee7a pin gi\u1ea3m xu\u1ed1ng l\u1ea7n l\u01b0\u1ee3t l\u00e0 100%, 90% v\u00e0 80%. T\u00e1c \u0111\u1ed9ng c\u1ee7a qu\u00e1 tr\u00ecnh l\u00e3o h\u00f3a \u1edf nhi\u1ec7t \u0111\u1ed9 cao \u0111\u1ebfn hi\u1ec7u su\u1ea5t an to\u00e0n nhi\u1ec7t c\u1ee7a pin \u0111\u00e3 \u0111\u01b0\u1ee3c ph\u00e2n t\u00edch t\u1eeb nhi\u1ec1u g\u00f3c \u0111\u1ed9.<\/span><\/p>\n

3. K\u1ebft qu\u1ea3 nghi\u00ean c\u1ee9u<\/span><\/strong><\/span><\/h1>\n

3.1. Hi\u1ec7u su\u1ea5t \u0111i\u1ec7n t\u1eed-h\u00f3a h\u1ecdc<\/span><\/span><\/h2>\n

Trong qu\u00e1 tr\u00ecnh l\u00e3o h\u00f3a \u1edf nhi\u1ec7t \u0111\u1ed9 cao, pin bi\u1ec3u hi\u1ec7n m\u1ed9t m\u00f4 h\u00ecnh ph\u00e2n r\u00e3 tuy\u1ebfn t\u00ednh g\u1ea7n \u0111\u00fang trong giai \u0111o\u1ea1n \u0111\u1ea7u c\u1ee7a qu\u00e1 tr\u00ecnh l\u00e3o h\u00f3a. Nh\u01b0ng khi s\u1ed1 chu k\u1ef3 t\u0103ng l\u00ean, SOH c\u1ee7a pin t\u0103ng t\u1ed1c qu\u00e1 tr\u00ecnh ph\u00e2n r\u00e3 c\u1ee7a n\u00f3. \u0110\u1ed3ng th\u1eddi, ph\u1ed5 tr\u1edf kh\u00e1ng c\u1ee7a pin c\u0169ng tr\u1ea3i qua nh\u1eefng thay \u0111\u1ed5i \u0111\u00e1ng k\u1ec3 khi l\u00e3o h\u00f3a. Khi m\u1ee9c \u0111\u1ed9 l\u00e3o h\u00f3a s\u00e2u h\u01a1n, ph\u1ed5 tr\u1edf kh\u00e1ng d\u1ea7n d\u1ecbch chuy\u1ec3n sang ph\u1ea3i v\u00e0 tr\u1edf kh\u00e1ng Ohmic d\u1ea7n t\u0103ng l\u00ean.<\/span><\/p>\n

Ngo\u00e0i ra, do ph\u1ea3n \u1ee9ng ph\u1ee5 li\u00ean t\u1ee5c x\u1ea3y ra t\u1ea1i giao di\u1ec7n \u0111i\u1ec7n ph\u00e2n \u0111i\u1ec7n c\u1ef1c trong qu\u00e1 tr\u00ecnh l\u00e3o h\u00f3a \u1edf nhi\u1ec7t \u0111\u1ed9 cao, tr\u1edf kh\u00e1ng m\u1eb7t n\u1ea1 v\u00e0 tr\u1edf kh\u00e1ng truy\u1ec1n t\u1ea3i c\u1ee7a giao di\u1ec7n pin c\u0169ng t\u0103ng nhanh, th\u1ec3 hi\u1ec7n qua s\u1ef1 gia t\u0103ng \u0111\u00e1ng k\u1ec3 gi\u1eefa c\u00e1c cung c\u1ee7a ph\u1ea7n t\u1ea7n s\u1ed1 trung b\u00ecnh v\u00e0 cao. Ngo\u00e0i ra, v\u1edbi s\u1ef1 h\u00f2a tan c\u1ee7a kim lo\u1ea1i chuy\u1ec3n ti\u1ebfp v\u00e0 s\u1ef1 thay \u0111\u1ed5i trong c\u1ea5u tr\u00fac cat\u1ed1t, s\u1ef1 khu\u1ebfch t\u00e1n c\u1ee7a c\u00e1c ion lithium b\u00ean trong \u0111i\u1ec7n c\u1ef1c tr\u1edf n\u00ean kh\u00f3 kh\u0103n v\u00e0 tr\u1edf kh\u00e1ng Weber c\u0169ng t\u0103ng \u0111\u00e1ng k\u1ec3.<\/span><\/p>\n

3.2. \u0110\u1eb7c \u0111i\u1ec3m sinh nhi\u1ec7t x\u1ea3 \u0111o\u1ea1n nhi\u1ec7t<\/span><\/span><\/h2>\n

Trong qu\u00e1 tr\u00ecnh l\u00e3o h\u00f3a chu k\u1ef3 nhi\u1ec7t \u0111\u1ed9 cao, s\u1ef1 xu\u1ed1ng c\u1ea5p b\u00ean trong c\u1ee7a pin li\u00ean t\u1ee5c x\u1ea3y ra, ch\u1eb3ng h\u1ea1n nh\u01b0 s\u1ef1 ph\u00e2n h\u1ee7y li\u00ean t\u1ee5c c\u1ee7a ch\u1ea5t \u0111i\u1ec7n ph\u00e2n v\u00e0 s\u1ef1 d\u00e0y l\u00ean c\u1ee7a m\u00e0ng SEI. S\u1ef1 xu\u1ed1ng c\u1ea5p n\u00e0y khi\u1ebfn tr\u1edf kh\u00e1ng c\u1ee7a pin li\u00ean t\u1ee5c t\u0103ng, d\u1eabn \u0111\u1ebfn s\u1ef1 thay \u0111\u1ed5i t\u1ed1c \u0111\u1ed9 t\u0103ng nhi\u1ec7t \u0111\u1ed9 trong qu\u00e1 tr\u00ecnh x\u1ea3 \u0111o\u1ea1n nhi\u1ec7t c\u1ee7a pin.<\/span><\/p>\n

Do s\u1ef1 xu\u1ed1ng c\u1ea5p nh\u1eb9 b\u00ean trong pin trong giai \u0111o\u1ea1n \u0111\u1ea7u c\u1ee7a qu\u00e1 tr\u00ecnh l\u00e3o h\u00f3a chu k\u1ef3 nhi\u1ec7t \u0111\u1ed9 cao, t\u1ed1c \u0111\u1ed9 t\u0103ng nhi\u1ec7t \u0111\u1ed9 c\u1ee7a pin kh\u00f4ng thay \u0111\u1ed5i \u0111\u00e1ng k\u1ec3 trong to\u00e0n b\u1ed9 qu\u00e1 tr\u00ecnh x\u1ea3. T\u1ea1i th\u1eddi \u0111i\u1ec3m n\u00e0y, dung l\u01b0\u1ee3ng \u0111\u00f3ng vai tr\u00f2 ch\u00ednh v\u00e0 s\u1ef1 suy gi\u1ea3m dung l\u01b0\u1ee3ng d\u1eabn \u0111\u1ebfn s\u1ef1 gi\u1ea3m nhi\u1ec7t \u0111\u1ed9 t\u0103ng trong su\u1ed1t qu\u00e1 tr\u00ecnh x\u1ea3. Sau khi pin l\u00e3o h\u00f3a s\u00e2u, s\u1ef1 xu\u1ed1ng c\u1ea5p nghi\u00eam tr\u1ecdng x\u1ea3y ra b\u00ean trong pin, d\u1eabn \u0111\u1ebfn s\u1ef1 gia t\u0103ng \u0111\u00e1ng k\u1ec3 t\u1ed1c \u0111\u1ed9 t\u0103ng nhi\u1ec7t \u0111\u1ed9 trong qu\u00e1 tr\u00ecnh x\u1ea3 \u0111o\u1ea1n nhi\u1ec7t.<\/span><\/p>\n

T\u1ea1i th\u1eddi \u0111i\u1ec3m n\u00e0y, t\u1ed1c \u0111\u1ed9 t\u0103ng nhi\u1ec7t \u0111\u1ed9 \u0111\u00f3ng vai tr\u00f2 ch\u00ednh, m\u1eb7c d\u00f9 dung l\u01b0\u1ee3ng pin gi\u1ea3m, nh\u01b0ng nhi\u1ec7t \u0111\u1ed9 t\u0103ng chung t\u0103ng \u0111\u00e1ng k\u1ec3. Do \u0111\u00f3, khi dung l\u01b0\u1ee3ng pin gi\u1ea3m, nhi\u1ec7t \u0111\u1ed9 t\u0103ng c\u1ee7a pin trong qu\u00e1 tr\u00ecnh x\u1ea3 \u0111o\u1ea1n nhi\u1ec7t cho th\u1ea5y xu h\u01b0\u1edbng \u0111\u1ea7u ti\u00ean l\u00e0 gi\u1ea3m v\u00e0 sau \u0111\u00f3 t\u0103ng.<\/span><\/p>\n

3.3. \u0110\u1eb7c t\u00ednh nhi\u1ec7t \u0111\u1ed9 tho\u00e1t \u0111o\u1ea1n nhi\u1ec7t<\/span><\/span><\/h2>\n

Nhi\u1ec7t \u0111\u1ed9 \u0111\u1eb7c tr\u01b0ng c\u1ee7a qu\u00e1 tr\u00ecnh m\u1ea5t nhi\u1ec7t c\u1ee7a pin bao g\u1ed3m nhi\u1ec7t \u0111\u1ed9 b\u1eaft \u0111\u1ea7u c\u1ee7a nhi\u1ec7t t\u1ef1 sinh T1, nhi\u1ec7t \u0111\u1ed9 k\u00edch ho\u1ea1t c\u1ee7a qu\u00e1 tr\u00ecnh m\u1ea5t nhi\u1ec7t T2 v\u00e0 nhi\u1ec7t \u0111\u1ed9 cao nh\u1ea5t T3. Khi m\u1ee9c \u0111\u1ed9 l\u00e3o h\u00f3a c\u1ee7a pin t\u0103ng l\u00ean, T1 v\u00e0 T2 li\u00ean t\u1ee5c gi\u1ea3m, cho th\u1ea5y qu\u00e1 tr\u00ecnh l\u00e3o h\u00f3a \u1edf nhi\u1ec7t \u0111\u1ed9 cao l\u00e0m gi\u1ea3m \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh nhi\u1ec7t c\u1ee7a pin. S\u1ef1 gi\u1ea3m T1 ch\u1ee7 y\u1ebfu l\u00e0 do nhi\u1ec7t \u0111\u1ed9 cao l\u00e0m thay \u0111\u1ed5i th\u00e0nh ph\u1ea7n c\u1ee7a m\u00e0ng SEI, t\u1eeb \u0111\u00f3 d\u1eabn \u0111\u1ebfn gi\u1ea3m \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh nhi\u1ec7t c\u1ee7a n\u00f3;<\/span><\/p>\n

V\u00e0 T2 ch\u1ee7 y\u1ebfu l\u00e0 do s\u1ef1 suy gi\u1ea3m \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh nhi\u1ec7t c\u1ee7a h\u1ec7 th\u1ed1ng ph\u1ea3n \u1ee9ng anot v\u00e0 catot. Ngo\u00e0i ra, ph\u00e2n t\u00edch l\u1eafp n\u0103ng l\u01b0\u1ee3ng ho\u1ea1t h\u00f3a ti\u1ebfp theo \u0111\u00e3 \u0111\u01b0\u1ee3c ti\u1ebfn h\u00e0nh tr\u00ean giai \u0111o\u1ea1n T1-T2 v\u00e0 k\u1ebft qu\u1ea3 l\u1eafp cho th\u1ea5y n\u0103ng l\u01b0\u1ee3ng ho\u1ea1t h\u00f3a c\u1ee7a pin gi\u1ea3m \u0111\u00e1ng k\u1ec3 khi l\u00e3o h\u00f3a trong ph\u1ea1m vi nhi\u1ec7t \u0111\u1ed9 n\u00e0y, ch\u1ec9 ra th\u00eam r\u1eb1ng l\u00e3o h\u00f3a \u1edf nhi\u1ec7t \u0111\u1ed9 cao d\u1eabn \u0111\u1ebfn s\u1ef1 suy gi\u1ea3m \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh nhi\u1ec7t c\u1ee7a pin.<\/span><\/p>\n

Ngo\u00e0i ra, khi m\u1ee9c \u0111\u1ed9 l\u00e3o h\u00f3a s\u00e2u h\u01a1n, nhi\u1ec7t \u0111\u1ed9 t\u1ed1i \u0111a v\u00e0 t\u1ed1c \u0111\u1ed9 t\u0103ng nhi\u1ec7t \u0111\u1ed9 t\u1ed1i \u0111a c\u1ee7a pin gi\u1ea3m d\u1ea7n. V\u00e0 c\u00f3 m\u1ed9t cao nguy\u00ean t\u1ecfa nhi\u1ec7t tr\u00ean \u0111\u01b0\u1eddng cong t\u1ed1c \u0111\u1ed9 t\u0103ng nhi\u1ec7t \u0111\u1ed9. Khi qu\u00e1 tr\u00ecnh l\u00e3o h\u00f3a s\u00e2u h\u01a1n, chi\u1ec1u d\u00e0i c\u1ee7a n\u1ec1n t\u1ea3ng t\u1ecfa nhi\u1ec7t d\u1ea7n d\u1ea7n ng\u1eafn l\u1ea1i. Nh\u1eefng hi\u1ec7n t\u01b0\u1ee3ng n\u00e0y ch\u1ec9 ra r\u1eb1ng t\u00e1c h\u1ea1i c\u1ee7a qu\u00e1 tr\u00ecnh ch\u1ea1y tr\u1ed1n nhi\u1ec7t \u0111\u1ed9 gi\u1ea3m d\u1ea7n theo qu\u00e1 tr\u00ecnh l\u00e3o h\u00f3a pin. \u0110i\u1ec1u n\u00e0y ch\u1ee7 y\u1ebfu l\u00e0 do s\u1ef1 ti\u00eau th\u1ee5 li\u00ean t\u1ee5c c\u00e1c ch\u1ea5t ho\u1ea1t \u0111\u1ed9ng b\u00ean trong pin trong qu\u00e1 tr\u00ecnh l\u00e3o h\u00f3a chu k\u1ef3 nhi\u1ec7t \u0111\u1ed9 cao, ch\u1eb3ng h\u1ea1n nh\u01b0 m\u1ea5t lithium ho\u1ea1t \u0111\u1ed9ng v\u00e0 ti\u00eau th\u1ee5 ch\u1ea5t \u0111i\u1ec7n ph\u00e2n.<\/span><\/p>\n

\u0110i\u1ec1u n\u00e0y l\u00e0m gi\u1ea3m l\u01b0\u1ee3ng tham gia v\u00e0o c\u00e1c ph\u1ea3n \u1ee9ng h\u00f3a h\u1ecdc d\u1eef d\u1ed9i trong qu\u00e1 tr\u00ecnh m\u1ea5t ki\u1ec3m so\u00e1t nhi\u1ec7t nghi\u00eam tr\u1ecdng, d\u1eabn \u0111\u1ebfn gi\u1ea3m n\u0103ng l\u01b0\u1ee3ng gi\u1ea3i ph\u00f3ng, gi\u1ea3m c\u01b0\u1eddng \u0111\u1ed9 ph\u1ea3n \u1ee9ng, gi\u1ea3m nhi\u1ec7t \u0111\u1ed9 t\u1ed1i \u0111a v\u00e0 t\u1ed1c \u0111\u1ed9 t\u0103ng nhi\u1ec7t \u0111\u1ed9 t\u1ed1i \u0111a, v\u00e0 r\u00fat ng\u1eafn chi\u1ec1u d\u00e0i c\u1ee7a b\u1ec7 gi\u1ea3i ph\u00f3ng nhi\u1ec7t.<\/span><\/p>\n

3.4. \u0110\u1eb7c t\u00ednh nhi\u1ec7t \u0111\u1ed9 t\u0103ng \u0111\u1ed9t ng\u1ed9t c\u1ee7a qu\u00e1 t\u1ea3i \u0111o\u1ea1n nhi\u1ec7t<\/span><\/span><\/h2>\n

\u0110\u1ed1i v\u1edbi qu\u00e1 tr\u00ecnh m\u1ea5t ki\u1ec3m so\u00e1t nhi\u1ec7t do s\u1ea1c qu\u00e1 m\u1ee9c, nhi\u1ec7t do pin c\u0169 sinh ra trong qu\u00e1 tr\u00ecnh n\u00e0y th\u1ea5p h\u01a1n so v\u1edbi pin m\u1edbi. \u0110\u1ed1i v\u1edbi t\u1ed5ng nhi\u1ec7t do s\u1ea1c qu\u00e1 m\u1ee9c v\u00e0 m\u1ea5t ki\u1ec3m so\u00e1t, nhi\u1ec7t ph\u1ea3n \u1ee9ng h\u00f3a h\u1ecdc v\u00e0 nhi\u1ec7t ng\u1eafn m\u1ea1ch b\u00ean trong l\u00e0 nh\u1eefng ngu\u1ed3n nhi\u1ec7t ch\u00ednh. Khi qu\u00e1 tr\u00ecnh l\u00e3o h\u00f3a di\u1ec5n ra, ph\u1ea7n nhi\u1ec7t n\u00e0y gi\u1ea3m d\u1ea7n. Do tr\u1edf kh\u00e1ng c\u1ee7a pin t\u0103ng l\u00ean trong qu\u00e1 tr\u00ecnh l\u00e3o h\u00f3a \u1edf nhi\u1ec7t \u0111\u1ed9 cao, th\u1eddi gian s\u1ea1c qu\u00e1 m\u1ee9c \u0111\u1ebfn Vip l\u00e0 t\u01b0\u01a1ng t\u1ef1 nhau.<\/span><\/p>\n

Do \u0111\u00f3, c\u00f3 th\u1ec3 th\u1ea5y r\u1eb1ng nhi\u1ec7t Ohmic v\u00e0 nhi\u1ec7t thu\u1eadn ngh\u1ecbch c\u1ee7a pin c\u0169 l\u1edbn h\u01a1n pin m\u1edbi. \u0110\u1ed1i v\u1edbi vi\u1ec7c k\u00edch ho\u1ea1t s\u1ef1 m\u1ea5t ki\u1ec3m so\u00e1t nhi\u1ec7t c\u1ee7a pin c\u0169, c\u1ea7n \u00edt n\u0103ng l\u01b0\u1ee3ng h\u01a1n, do \u0111\u00f3, c\u1ea7n \u00edt nhi\u1ec7t ph\u1ea3n \u1ee9ng ph\u1ee5 h\u01a1n trong qu\u00e1 tr\u00ecnh n\u00e0y. Do \u0111\u00f3, khi pin c\u0169 \u0111i, t\u1ef7 l\u1ec7 \u0111\u00f3ng g\u00f3p c\u1ee7a nhi\u1ec7t ph\u1ea3n \u1ee9ng ph\u1ee5 gi\u1ea3m do s\u1ef1 k\u00edch ho\u1ea1t s\u1ef1 m\u1ea5t ki\u1ec3m so\u00e1t nhi\u1ec7t.<\/span><\/p>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

1. B\u1ed1i c\u1ea3nh nghi\u00ean c\u1ee9u \u0110\u1ec3 \u1ee9ng ph\u00f3 hi\u1ec7u qu\u1ea3 v\u1edbi nh\u1eefng thay \u0111\u1ed5i b\u1ea5t l\u1ee3i trong m\u00f4i tr\u01b0\u1eddng v\u00e0 kh\u00ed h\u1eadu, gi\u1ea3m ph\u00e1t th\u1ea3i kh\u00ed nh\u00e0 k\u00ednh v\u00e0 \u0111\u1ea1t \u0111\u01b0\u1ee3c m\u1ee5c ti\u00eau \u0111\u1ea1t \u0111\u1ec9nh carbon v\u00e0 trung h\u00f2a carbon c\u00e0ng s\u1edbm c\u00e0ng t\u1ed1t, c\u1ea5u tr\u00fac n\u0103ng l\u01b0\u1ee3ng \u0111ang chuy\u1ec3n \u0111\u1ed5i nhanh ch\u00f3ng. \u0110i\u1ec7n kh\u00ed<\/p>\n","protected":false},"author":1,"featured_media":19580,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[88],"tags":[],"class_list":["post-19579","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\/19579","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=19579"}],"version-history":[{"count":2,"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/posts\/19579\/revisions"}],"predecessor-version":[{"id":21902,"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/posts\/19579\/revisions\/21902"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/media\/19580"}],"wp:attachment":[{"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/media?parent=19579"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/categories?post=19579"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/dgbellvietnam.com\/en\/wp-json\/wp\/v2\/tags?post=19579"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}