{"id":4249,"date":"2026-02-12T12:27:21","date_gmt":"2026-02-12T04:27:21","guid":{"rendered":"https:\/\/www.pandaexo.com\/high-voltage-systems-in-electric-cars-a-beginners-guide-to-the-future-of-power\/"},"modified":"2026-04-01T11:39:13","modified_gmt":"2026-04-01T03:39:13","slug":"high-voltage-systems-in-electric-cars-a-beginners-guide-to-the-future-of-power","status":"publish","type":"post","link":"https:\/\/www.pandaexo.com\/vi\/high-voltage-systems-in-electric-cars-a-beginners-guide-to-the-future-of-power\/","title":{"rendered":"H\u1ec7 Th\u1ed1ng \u0110i\u1ec7n \u00c1p Cao Trong Xe \u0110i\u1ec7n: H\u01b0\u1edbng D\u1eabn Cho Ng\u01b0\u1eddi M\u1edbi B\u1eaft \u0110\u1ea7u V\u1ec1 T\u01b0\u01a1ng Lai C\u1ee7a N\u0103ng L\u01b0\u1ee3ng"},"content":{"rendered":"

Khi b\u1ea1n ngh\u0129 \u0111\u1ebfn pin \u00f4 t\u00f4, c\u00f3 l\u1ebd b\u1ea1n h\u00ecnh dung ra kh\u1ed1i \u1eafc quy ch\u00ec-axit 12 volt kh\u1edfi \u0111\u1ed9ng \u0111\u1ed9ng c\u01a1 truy\u1ec1n th\u1ed1ng v\u00e0 ch\u1ea1y \u0111\u00e8n pha. Tuy nhi\u00ean, trong m\u1ed9t xe \u0111i\u1ec7n (EV), pin 12V \u0111\u00f3 ch\u1ec9 l\u00e0 m\u1ed9t vai tr\u00f2 h\u1ed7 tr\u1ee3 nh\u1ecf. C\u00f4ng vi\u1ec7c n\u1eb7ng nh\u1ecdc th\u1ef1c s\u1ef1 \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n b\u1edfi m\u1ed9t h\u1ec7 th\u1ed1ng \u0111i\u1ec7n \u00e1p cao (HV)<\/strong>\u2014m\u1ed9t m\u1ea1ng l\u01b0\u1edbi tinh vi qu\u1ea3n l\u00fd h\u00e0ng tr\u0103m volt \u0111\u1ec3 \u0111\u1ea9y m\u1ed9t ph\u01b0\u01a1ng ti\u1ec7n n\u1eb7ng h\u00e0ng t\u1ea5n v\u1edbi t\u1ed1c \u0111\u1ed9 \u0111\u01b0\u1eddng cao t\u1ed1c.<\/p>\n

Hi\u1ec3u c\u00e1ch ho\u1ea1t \u0111\u1ed9ng c\u1ee7a h\u1ec7 th\u1ed1ng \u0111i\u1ec7n \u00e1p cao l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft cho b\u1ea5t k\u1ef3 ai b\u01b0\u1edbc v\u00e0o l\u0129nh v\u1ef1c EV, d\u00f9 l\u00e0 qu\u1ea3n l\u00fd \u0111\u1ed9i xe, nh\u00e0 ph\u00e1t tri\u1ec3n c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng hay m\u1ed9t t\u00e0i x\u1ebf t\u00f2 m\u00f2. H\u01b0\u1edbng d\u1eabn n\u00e0y ph\u00e2n t\u00edch k\u1ef9 thu\u1eadt \u0111\u1eb1ng sau ngu\u1ed3n \u0111i\u1ec7n v\u00e0 l\u00fd do t\u1ea1i sao n\u00f3 l\u00e0 ch\u00eca kh\u00f3a cho th\u1ebf h\u1ec7 v\u1eadn t\u1ea3i ti\u1ebfp theo.<\/p>\n

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\u0110i\u1ec1u G\u00ec \u0110\u1ecbnh Ngh\u0129a “\u0110i\u1ec7n \u00c1p Cao” Trong M\u1ed9t EV?<\/h2>\n

Trong th\u1ebf gi\u1edbi \u00f4 t\u00f4, b\u1ea5t k\u1ef3 h\u1ec7 th\u1ed1ng n\u00e0o ho\u1ea1t \u0111\u1ed9ng tr\u00ean 60V DC<\/strong> th\u01b0\u1eddng \u0111\u01b0\u1ee3c ph\u00e2n lo\u1ea1i l\u00e0 “\u0111i\u1ec7n \u00e1p cao.” Trong khi \u0111i\u1ec7n tho\u1ea1i c\u1ee7a b\u1ea1n s\u1eed d\u1ee5ng kho\u1ea3ng 5V v\u00e0 thi\u1ebft b\u1ecb gia d\u1ee5ng c\u1ee7a b\u1ea1n s\u1eed d\u1ee5ng 110V ho\u1eb7c 230V, \u00f4 t\u00f4 \u0111i\u1ec7n hi\u1ec7n \u0111\u1ea1i th\u01b0\u1eddng ho\u1ea1t \u0111\u1ed9ng tr\u00ean ki\u1ebfn tr\u00fac dao \u0111\u1ed9ng t\u1eeb 400V \u0111\u1ebfn 800V<\/strong>.<\/p>\n

Nh\u1eefng \u0111i\u1ec7n \u00e1p cao n\u00e0y l\u00e0 c\u1ea7n thi\u1ebft v\u00ec m\u1ed9t quy t\u1eafc v\u1eadt l\u00fd \u0111\u01a1n gi\u1ea3n: \u0111\u1ec3 di chuy\u1ec3n m\u1ed9t chi\u1ebfc xe, b\u1ea1n c\u1ea7n m\u1ed9t l\u01b0\u1ee3ng n\u0103ng l\u01b0\u1ee3ng kh\u1ed5ng l\u1ed3. B\u1ea1n c\u00f3 th\u1ec3 c\u00f3 \u0111\u01b0\u1ee3c ngu\u1ed3n n\u0103ng l\u01b0\u1ee3ng \u0111\u00f3 b\u1eb1ng c\u00e1ch t\u0103ng d\u00f2ng \u0111i\u1ec7n (c\u01b0\u1eddng \u0111\u1ed9 d\u00f2ng \u0111i\u1ec7n) ho\u1eb7c t\u0103ng \u0111i\u1ec7n \u00e1p. V\u00ec d\u00f2ng \u0111i\u1ec7n cao t\u1ea1o ra nhi\u1ec7t c\u1ef1c \u0111\u1ed9 v\u00e0 y\u00eau c\u1ea7u c\u00e1p \u0111\u1ed3ng d\u00e0y, n\u1eb7ng, c\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t th\u00edch “t\u0103ng \u0111i\u1ec7n \u00e1p” \u0111\u1ec3 gi\u1eef cho h\u1ec7 th\u1ed1ng hi\u1ec7u qu\u1ea3 v\u00e0 nh\u1eb9.<\/p>\n

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C\u00e1c Th\u00e0nh Ph\u1ea7n C\u1ed1t L\u00f5i C\u1ee7a H\u1ec7 Th\u1ed1ng \u0110i\u1ec7n \u00c1p Cao EV<\/h2>\n

H\u1ec7 th\u1ed1ng \u0111i\u1ec7n \u00e1p cao c\u1ee7a EV kh\u00f4ng ch\u1ec9 l\u00e0 m\u1ed9t ph\u1ea7n; n\u00f3 l\u00e0 m\u1ed9t h\u1ec7 sinh th\u00e1i c\u1ee7a thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed c\u00f4ng su\u1ea5t v\u00e0 l\u01b0u tr\u1eef n\u0103ng l\u01b0\u1ee3ng<\/a>. M\u1ed7i th\u00e0nh ph\u1ea7n ph\u1ea3i \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf ch\u00ednh x\u00e1c \u0111\u1ec3 x\u1eed l\u00fd “\u00e1p l\u1ef1c” c\u1ee7a \u0111i\u1ec7n \u00e1p cao.<\/p>\n

C\u00e1c Th\u00e0nh Ph\u1ea7n \u0110i\u1ec7n \u00c1p Cao Ch\u00ednh<\/h3>\n\n\n\n\n\n\n\n\n\n\n
Th\u00e0nh Ph\u1ea7n<\/th>\nCh\u1ee9c N\u0103ng<\/th>\nT\u1ea1i Sao N\u00f3 L\u00e0 \u0110i\u1ec7n \u00c1p Cao<\/th>\n<\/tr>\n<\/thead>\n
B\u1ed9 Pin Traction<\/strong><\/td>\n“B\u00ecnh Nhi\u00ean Li\u1ec7u”<\/td>\nL\u01b0u tr\u1eef n\u0103ng l\u01b0\u1ee3ng DC \u1edf 400V\u2013800V \u0111\u1ec3 c\u1ea5p ngu\u1ed3n cho to\u00e0n b\u1ed9 h\u1ec7 th\u1ed1ng truy\u1ec1n \u0111\u1ed9ng.<\/td>\n<\/tr>\n
B\u1ed9 Bi\u1ebfn T\u1ea7n<\/strong><\/td>\n“B\u1ed9 N\u00e3o”<\/td>\nChuy\u1ec3n \u0111\u1ed5i ngu\u1ed3n DC c\u1ee7a pin th\u00e0nh ngu\u1ed3n AC cho \u0111\u1ed9ng c\u01a1.<\/td>\n<\/tr>\n
\u0110\u1ed9ng C\u01a1 \u0110i\u1ec7n<\/strong><\/td>\n“C\u01a1 B\u1eafp”<\/td>\nS\u1eed d\u1ee5ng AC \u0111i\u1ec7n \u00e1p cao \u0111\u1ec3 t\u1ea1o ra m\u00f4-men xo\u1eafn c\u1ea7n thi\u1ebft \u0111\u1ec3 quay b\u00e1nh xe.<\/td>\n<\/tr>\n
B\u1ed9 S\u1ea1c Tr\u00ean Xe<\/a> (OBC)<\/strong><\/td>\n“B\u1ed9 Chuy\u1ec3n \u0110\u1ed5i”<\/td>\nChuy\u1ec3n \u0111\u1ed5i AC t\u1eeb wallbox th\u00e0nh HV DC cho pin.<\/td>\n<\/tr>\n
B\u1ed9 Chuy\u1ec3n \u0110\u1ed5i DC\/DC<\/strong><\/td>\n“B\u01b0\u1edbc H\u1ea1 \u00c1p”<\/td>\nH\u1ea1 \u0111i\u1ec7n \u00e1p cao (v\u00ed d\u1ee5: 400V) xu\u1ed1ng 12V \u0111\u1ec3 ch\u1ea1y radio v\u00e0 \u0111\u00e8n.<\/td>\n<\/tr>\n
B\u1ed9 Ph\u00e2n Ph\u1ed1i Ngu\u1ed3n<\/strong><\/td>\n“B\u1ea3ng Chuy\u1ec3n M\u1ea1ch”<\/td>\n\u0110\u1ecbnh tuy\u1ebfn ngu\u1ed3n HV m\u1ed9t c\u00e1ch an to\u00e0n \u0111\u1ebfn \u0111\u1ed9ng c\u01a1, l\u00f2 s\u01b0\u1edfi v\u00e0 m\u00e1y n\u00e9n AC.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Chuy\u1ec3n \u0111\u1ed5i ngu\u1ed3n hi\u1ec7u qu\u1ea3 l\u00e0 x\u01b0\u01a1ng s\u1ed1ng c\u1ee7a c\u00e1c h\u1ec7 th\u1ed1ng n\u00e0y. \u0110i\u1ec1u n\u00e0y th\u01b0\u1eddng b\u1eaft \u0111\u1ea7u \u1edf c\u1ea5p \u0111\u1ed9 th\u00e0nh ph\u1ea7n v\u1edbi c\u1ea7u ch\u1ec9nh l\u01b0u<\/a> v\u00e0 ch\u1ea5t b\u00e1n d\u1eabn c\u00f4ng su\u1ea5t hi\u1ec7u su\u1ea5t cao c\u00f3 th\u1ec3 x\u1eed l\u00fd chuy\u1ec3n m\u1ea1ch nhanh m\u00e0 kh\u00f4ng b\u1ecb m\u1ea5t n\u0103ng l\u01b0\u1ee3ng \u0111\u00e1ng k\u1ec3.<\/p>\n

T\u1ea1i Sao \u0110i\u1ec7n \u00c1p Cao Quan Tr\u1ecdng: Hi\u1ec7u Su\u1ea5t v\u00e0 T\u1ed1c \u0110\u1ed9<\/h2>\n

S\u1ef1 chuy\u1ec3n \u0111\u1ed5i t\u1eeb ki\u1ebfn tr\u00fac 400V sang 800V l\u00e0 xu h\u01b0\u1edbng quan tr\u1ecdng nh\u1ea5t trong ng\u00e0nh hi\u1ec7n nay. Nh\u01b0ng t\u1ea1i sao m\u1ed9t con s\u1ed1 cao h\u01a1n l\u1ea1i quan tr\u1ecdng v\u1edbi ng\u01b0\u1eddi d\u00f9ng cu\u1ed1i? N\u00f3 quy v\u1ec1 hai y\u1ebfu t\u1ed1: Nhi\u1ec7t v\u00e0 Th\u1eddi Gian.<\/strong><\/p>\n

1. Gi\u1ea3m T\u1ed5n Hao Nhi\u1ec7t (T\u1ed5n Hao I^2R)<\/h3>\n

\u0110i\u1ec7n tr\u1edf t\u1ea1o ra nhi\u1ec7t. Theo \u0110\u1ecbnh lu\u1eadt Joule, nhi\u1ec7t l\u01b0\u1ee3ng t\u1ea1o ra t\u1ef7 l\u1ec7 thu\u1eadn v\u1edbi b\u00ecnh ph\u01b0\u01a1ng c\u1ee7a d\u00f2ng \u0111i\u1ec7n (I^2). B\u1eb1ng c\u00e1ch t\u0103ng g\u1ea5p \u0111\u00f4i \u0111i\u1ec7n \u00e1p, b\u1ea1n c\u00f3 th\u1ec3 gi\u1ea3m m\u1ed9t n\u1eeda d\u00f2ng \u0111i\u1ec7n trong khi v\u1eabn duy tr\u00ec c\u00f9ng m\u1ed9t c\u00f4ng su\u1ea5t \u0111\u1ea7u ra. Vi\u1ec7c gi\u1ea3m d\u00f2ng \u0111i\u1ec7n n\u00e0y d\u1eabn \u0111\u1ebfn \u00edt nhi\u1ec7t h\u01a1n \u0111\u00e1ng k\u1ec3, cho ph\u00e9p h\u1ec7 th\u1ed1ng l\u00e0m m\u00e1t nh\u1ecf h\u01a1n v\u00e0 t\u1ed5ng qu\u00e3ng \u0111\u01b0\u1eddng xe \u0111i \u0111\u01b0\u1ee3c l\u1edbn h\u01a1n.<\/p>\n

2. T\u1ed1c \u0110\u1ed9 S\u1ea1c C\u1ef1c Nhanh<\/h3>\n

\u0110i\u1ec7n \u00e1p cao l\u00e0 “b\u00ed quy\u1ebft” \u0111\u1eb1ng sau kh\u1ea3 n\u0103ng s\u1ea1c DC<\/a>. V\u1ec1 l\u00fd thuy\u1ebft, m\u1ed9t h\u1ec7 th\u1ed1ng 800V c\u00f3 th\u1ec3 s\u1ea1c nhanh g\u1ea5p \u0111\u00f4i h\u1ec7 th\u1ed1ng 400V v\u00ec n\u00f3 c\u00f3 th\u1ec3 l\u1ea5y nhi\u1ec1u n\u0103ng l\u01b0\u1ee3ng h\u01a1n t\u1eeb tr\u1ea1m m\u00e0 kh\u00f4ng l\u00e0m qu\u00e1 n\u00f3ng c\u00e1p s\u1ea1c ho\u1eb7c pin. M\u1ed9t s\u1ed1 xe 800V hi\u1ec7n nay c\u00f3 th\u1ec3 s\u1ea1c t\u1eeb 10% l\u00ean 80% trong v\u00f2ng ch\u01b0a \u0111\u1ea7y 18 ph\u00fat.<\/p>\n

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C\u01a1 S\u1edf H\u1ea1 T\u1ea7ng: Nu\u00f4i D\u01b0\u1ee1ng Con Th\u00fa \u0110i\u1ec7n \u00c1p Cao<\/h2>\n

\u0110\u1ec3 h\u1ed7 tr\u1ee3 nh\u1eefng ph\u01b0\u01a1ng ti\u1ec7n \u0111i\u1ec7n \u00e1p cao n\u00e0y, th\u1ebf gi\u1edbi c\u1ea7n m\u1ed9t m\u1ea1ng l\u01b0\u1edbi tr\u1ea1m s\u1ea1c EV<\/a> m\u1ea1nh m\u1ebd. T\u00f9y thu\u1ed9c v\u00e0o tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng, c\u01a1 s\u1edf h\u1ea1 t\u1ea7ng n\u00e0y \u0111\u01b0\u1ee3c chia th\u00e0nh hai lo\u1ea1i:<\/p>\n