{"id":689290,"date":"2024-08-22T04:00:50","date_gmt":"2024-08-22T03:00:50","guid":{"rendered":"https:\/\/www.thermal-engineering.org\/?p=689290"},"modified":"2024-08-22T04:00:50","modified_gmt":"2024-08-22T03:00:50","slug":"mo-hinh-hoa-nhiet-cho-he-thong-pin","status":"publish","type":"post","link":"https:\/\/www.thermal-engineering.org\/vi\/mo-hinh-hoa-nhiet-cho-he-thong-pin\/","title":{"rendered":"M\u00f4 h\u00ecnh h\u00f3a nhi\u1ec7t cho h\u1ec7 th\u1ed1ng pin"},"content":{"rendered":"

T\u1ed1i \u01b0u h\u00f3a m\u00f4 h\u00ecnh h\u00f3a nhi\u1ec7t cho h\u1ec7 th\u1ed1ng pin \u0111\u1ec3 t\u0103ng hi\u1ec7u su\u1ea5t v\u00e0 tu\u1ed5i th\u1ecd, gi\u00fap ph\u00e2n t\u00edch nhi\u1ec7t \u0111\u1ed9 v\u00e0 ki\u1ec3m so\u00e1t nhi\u1ec7t hi\u1ec7u qu\u1ea3.<\/p>\n

\"M\u00f4<\/p>\n

M\u00f4 h\u00ecnh h\u00f3a nhi\u1ec7t cho h\u1ec7 th\u1ed1ng pin<\/h2>\n

M\u00f4 h\u00ecnh h\u00f3a nhi\u1ec7t cho h\u1ec7 th\u1ed1ng pin l\u00e0 m\u1ed9t qu\u00e1 tr\u00ecnh quan tr\u1ecdng trong vi\u1ec7c thi\u1ebft k\u1ebf v\u00e0 t\u1ed1i \u01b0u h\u00f3a c\u00e1c h\u1ec7 th\u1ed1ng l\u01b0u tr\u1eef n\u0103ng l\u01b0\u1ee3ng. Qu\u00e1 tr\u00ecnh n\u00e0y gi\u00fap d\u1ef1 \u0111o\u00e1n nhi\u1ec7t \u0111\u1ed9 c\u1ee7a pin trong c\u00e1c \u0111i\u1ec1u ki\u1ec7n ho\u1ea1t \u0111\u1ed9ng kh\u00e1c nhau, t\u1eeb \u0111\u00f3 ng\u0103n ng\u1eeba hi\u1ec7n t\u01b0\u1ee3ng qu\u00e1 nhi\u1ec7t v\u00e0 k\u00e9o d\u00e0i tu\u1ed5i th\u1ecd c\u1ee7a pin. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 nh\u1eefng kh\u00e1i ni\u1ec7m v\u00e0 ph\u01b0\u01a1ng ph\u00e1p c\u01a1 b\u1ea3n trong m\u00f4 h\u00ecnh h\u00f3a nhi\u1ec7t cho h\u1ec7 th\u1ed1ng pin.<\/p>\n

1. C\u01a1 b\u1ea3n v\u1ec1 m\u00f4 h\u00ecnh nhi\u1ec7t<\/h3>\n

C\u00e1c m\u00f4 h\u00ecnh nhi\u1ec7t th\u01b0\u1eddng \u0111\u01b0\u1ee3c ph\u00e2n lo\u1ea1i th\u00e0nh ba lo\u1ea1i ch\u00ednh: m\u00f4 h\u00ecnh ph\u00e2n t\u00edch, m\u00f4 h\u00ecnh b\u00e1n th\u1ef1c nghi\u1ec7m v\u00e0 m\u00f4 h\u00ecnh s\u1ed1 h\u1ecdc.<\/p>\n

<\/p>\n

  • M\u00f4 h\u00ecnh ph\u00e2n t\u00edch:<\/b> S\u1eed d\u1ee5ng c\u00e1c ph\u01b0\u01a1ng tr\u00ecnh to\u00e1n h\u1ecdc \u0111\u1ec3 m\u00f4 ph\u1ecfng qu\u00e1 tr\u00ecnh truy\u1ec1n nhi\u1ec7t trong pin. \u0110\u00e2y l\u00e0 ph\u01b0\u01a1ng ph\u00e1p \u0111\u01a1n gi\u1ea3n nh\u1ea5t nh\u01b0ng th\u01b0\u1eddng b\u1ecb gi\u1edbi h\u1ea1n b\u1edfi c\u00e1c gi\u1ea3 \u0111\u1ecbnh \u0111\u01a1n gi\u1ea3n h\u00f3a.<\/li>\n
  • M\u00f4 h\u00ecnh b\u00e1n th\u1ef1c nghi\u1ec7m:<\/b> K\u1ebft h\u1ee3p gi\u1eefa c\u00e1c ph\u01b0\u01a1ng tr\u00ecnh to\u00e1n h\u1ecdc v\u00e0 d\u1eef li\u1ec7u th\u1ef1c nghi\u1ec7m. \u0110i\u1ec1u n\u00e0y gi\u00fap t\u0103ng \u0111\u1ed9 ch\u00ednh x\u00e1c c\u1ee7a m\u00f4 h\u00ecnh nh\u01b0ng y\u00eau c\u1ea7u nhi\u1ec1u d\u1eef li\u1ec7u th\u1ef1c nghi\u1ec7m.<\/li>\n
  • M\u00f4 h\u00ecnh s\u1ed1 h\u1ecdc:<\/b> S\u1eed d\u1ee5ng c\u00e1c k\u1ef9 thu\u1eadt t\u00ednh to\u00e1n ti\u00ean ti\u1ebfn nh\u01b0 ph\u01b0\u01a1ng ph\u00e1p ph\u1ea7n t\u1eed h\u1eefu h\u1ea1n (FEM) \u0111\u1ec3 m\u00f4 ph\u1ecfng chi ti\u1ebft qu\u00e1 tr\u00ecnh truy\u1ec1n nhi\u1ec7t. Ph\u01b0\u01a1ng ph\u00e1p n\u00e0y r\u1ea5t ch\u00ednh x\u00e1c nh\u01b0ng y\u00eau c\u1ea7u s\u1ee9c m\u1ea1nh t\u00ednh to\u00e1n l\u1edbn.<\/li>\n

    <\/u1><\/p>\n

    2. C\u00e1c y\u1ebfu t\u1ed1 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn nhi\u1ec7t \u0111\u1ed9 c\u1ee7a pin<\/h3>\n

    Nhi\u1ec7t \u0111\u1ed9 c\u1ee7a pin b\u1ecb \u1ea3nh h\u01b0\u1edfng b\u1edfi nhi\u1ec1u y\u1ebfu t\u1ed1 kh\u00e1c nhau:<\/p>\n

    <\/p>\n

  • Ngu\u1ed3n nhi\u1ec7t n\u1ed9i t\u1ea1i:<\/b> G\u1ed3m n\u0103ng l\u01b0\u1ee3ng sinh ra do ph\u1ea3n \u1ee9ng h\u00f3a h\u1ecdc b\u00ean trong pin.<\/li>\n
  • Truy\u1ec1n nhi\u1ec7t:<\/b> G\u1ed3m c\u1ea3 truy\u1ec1n nhi\u1ec7t d\u1eabn, \u0111\u1ed1i l\u01b0u v\u00e0 b\u1ee9c x\u1ea1 t\u1eeb b\u1ec1 m\u1eb7t pin ra m\u00f4i tr\u01b0\u1eddng xung quanh.<\/li>\n
  • M\u00f4i tr\u01b0\u1eddng xung quanh:<\/b> Nhi\u1ec7t \u0111\u1ed9 v\u00e0 c\u00e1c \u0111i\u1ec1u ki\u1ec7n c\u1ee7a m\u00f4i tr\u01b0\u1eddng xung quanh c\u0169ng t\u00e1c \u0111\u1ed9ng l\u1edbn \u0111\u1ebfn nhi\u1ec7t \u0111\u1ed9 c\u1ee7a pin.<\/li>\n

    <\/o1><\/p>\n

    3. Ph\u01b0\u01a1ng tr\u00ecnh c\u01a1 b\u1ea3n<\/h3>\n

    Ph\u01b0\u01a1ng tr\u00ecnh truy\u1ec1n nhi\u1ec7t c\u01a1 b\u1ea3n th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong m\u00f4 h\u00ecnh h\u00f3a nhi\u1ec7t cho h\u1ec7 th\u1ed1ng pin l\u00e0 ph\u01b0\u01a1ng tr\u00ecnh d\u1eabn nhi\u1ec7t:<\/p>\n

    \\[
    \n\\frac{\\partial T}{\\partial t} = \\alpha (\\frac{\\partial^2 T}{\\partial x^2} + \\frac{\\partial^2 T}{\\partial y^2} + \\frac{\\partial^2 T}{\\partial z^2}) + Q
    \n\\]\n

    Trong \u0111\u00f3:<\/p>\n

      \n
    • T: Nhi\u1ec7t \u0111\u1ed9 (K)<\/li>\n
    • t: Th\u1eddi gian (s)<\/li>\n
    • \\(\\alpha\\): H\u1ec7 s\u1ed1 khu\u1ebfch t\u00e1n nhi\u1ec7t (m\u00b2\/s)<\/li>\n
    • Q: Ngu\u1ed3n nhi\u1ec7t (W\/m\u00b3)<\/li>\n<\/ul>\n

      4. \u1ee8ng d\u1ee5ng c\u1ee7a m\u00f4 h\u00ecnh h\u00f3a nhi\u1ec7t<\/h3>\n

      M\u00f4 h\u00ecnh h\u00f3a nhi\u1ec7t \u0111\u01b0\u1ee3c \u1ee9ng d\u1ee5ng trong nhi\u1ec1u l\u0129nh v\u1ef1c li\u00ean quan \u0111\u1ebfn pin:<\/p>\n

      <\/p>\n

    • Thi\u1ebft k\u1ebf pin:<\/b> Gi\u00fap t\u1ed1i \u01b0u h\u00f3a thi\u1ebft k\u1ebf \u0111\u1ec3 \u0111\u1ea1t hi\u1ec7u qu\u1ea3 cao nh\u1ea5t v\u1ec1 hi\u1ec7u su\u1ea5t v\u00e0 tu\u1ed5i th\u1ecd.<\/li>\n
    • H\u1ec7 th\u1ed1ng qu\u1ea3n l\u00fd nhi\u1ec7t:<\/b> Gi\u00fap ph\u00e1t tri\u1ec3n c\u00e1c h\u1ec7 th\u1ed1ng qu\u1ea3n l\u00fd nhi\u1ec7t \u0111\u1ec3 duy tr\u00ec nhi\u1ec7t \u0111\u1ed9 l\u00e0m vi\u1ec7c \u1ed5n \u0111\u1ecbnh cho pin.<\/li>\n
    • An to\u00e0n pin:<\/b> Ph\u00e1t hi\u1ec7n v\u00e0 ng\u0103n ng\u1eeba nguy c\u01a1 qu\u00e1 nhi\u1ec7t v\u00e0 c\u00e1c s\u1ef1 c\u1ed1 li\u00ean quan.<\/li>\n

      <\/u1><\/p>\n

      K\u1ebft lu\u1eadn<\/h3>\n

      M\u00f4 h\u00ecnh h\u00f3a nhi\u1ec7t cho h\u1ec7 th\u1ed1ng pin l\u00e0 m\u1ed9t c\u00f4ng c\u1ee5 quan tr\u1ecdng trong vi\u1ec7c \u0111\u1ea3m b\u1ea3o hi\u1ec7u su\u1ea5t v\u00e0 tu\u1ed5i th\u1ecd c\u1ee7a pin. S\u1ef1 k\u1ebft h\u1ee3p gi\u1eefa c\u00e1c ph\u01b0\u01a1ng ph\u00e1p m\u00f4 h\u00ecnh h\u00f3a kh\u00e1c nhau v\u00e0 hi\u1ec3u bi\u1ebft v\u1ec1 c\u00e1c y\u1ebfu t\u1ed1 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn nhi\u1ec7t \u0111\u1ed9 gi\u00fap n\u00e2ng cao \u0111\u1ed9 ch\u00ednh x\u00e1c v\u00e0 hi\u1ec7u qu\u1ea3 c\u1ee7a qu\u00e1 tr\u00ecnh m\u00f4 h\u00ecnh h\u00f3a.<\/p>\n","protected":false},"excerpt":{"rendered":"

      T\u1ed1i \u01b0u h\u00f3a m\u00f4 h\u00ecnh h\u00f3a nhi\u1ec7t cho h\u1ec7 th\u1ed1ng pin \u0111\u1ec3 t\u0103ng hi\u1ec7u su\u1ea5t v\u00e0 tu\u1ed5i th\u1ecd, gi\u00fap ph\u00e2n t\u00edch nhi\u1ec7t \u0111\u1ed9 v\u00e0 ki\u1ec3m so\u00e1t nhi\u1ec7t hi\u1ec7u qu\u1ea3.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[132],"tags":[],"yoast_head":"\nM\u00f4 h\u00ecnh h\u00f3a nhi\u1ec7t cho h\u1ec7 th\u1ed1ng pin<\/title>\n<meta name=\"description\" content=\"T\u1ed1i \u01b0u h\u00f3a m\u00f4 h\u00ecnh h\u00f3a nhi\u1ec7t cho h\u1ec7 th\u1ed1ng pin \u0111\u1ec3 t\u0103ng hi\u1ec7u su\u1ea5t v\u00e0 tu\u1ed5i th\u1ecd, gi\u00fap ph\u00e2n t\u00edch nhi\u1ec7t \u0111\u1ed9 v\u00e0 ki\u1ec3m so\u00e1t nhi\u1ec7t hi\u1ec7u qu\u1ea3.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" 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