{"id":2949,"date":"2025-09-18T08:00:26","date_gmt":"2025-09-18T08:00:26","guid":{"rendered":"https:\/\/nbaem.com\/?p=2949"},"modified":"2025-09-18T08:10:53","modified_gmt":"2025-09-18T08:10:53","slug":"magnet-for-brushless-dc-motor","status":"publish","type":"post","link":"https:\/\/nbaem.com\/vi\/magnet-for-brushless-dc-motor\/","title":{"rendered":"Nam ch\u00e2m cho \u0110\u1ed9ng c\u01a1 Kh\u00f4ng ch\u1ed5i than DC"},"content":{"rendered":"<p>N\u1ebfu b\u1ea1n \u0111ang l\u00e0m vi\u1ec7c v\u1edbi <strong>\u0111\u1ed9ng c\u01a1 kh\u00f4ng ch\u1ed5i than DC<\/strong> ho\u1eb7c kh\u00e1m ph\u00e1 thi\u1ebft k\u1ebf \u0111\u1ed9ng c\u01a1, b\u1ea1n \u0111\u00e3 bi\u1ebft r\u1eb1ng <strong>nam ch\u00e2m ph\u00f9 h\u1ee3p cho \u0111\u1ed9ng c\u01a1 kh\u00f4ng ch\u1ed5i than DC<\/strong> c\u00f3 th\u1ec3 t\u1ea1o ra ho\u1eb7c ph\u00e1 v\u1ee1 hi\u1ec7u su\u1ea5t. Nh\u01b0ng ch\u00ednh x\u00e1c \u0111i\u1ec1u g\u00ec l\u00e0m cho m\u1ed9t nam ch\u00e2m l\u00fd t\u01b0\u1edfng cho nh\u1eefng \u0111\u1ed9ng c\u01a1 n\u00e0y? V\u00e0 c\u00e1c lo\u1ea1i v\u1eadt li\u1ec7u nam ch\u00e2m kh\u00e1c nhau \u1ea3nh h\u01b0\u1edfng nh\u01b0 th\u1ebf n\u00e0o \u0111\u1ebfn hi\u1ec7u qu\u1ea3, \u0111\u1ed9 b\u1ec1n v\u00e0 chi ph\u00ed? Trong h\u01b0\u1edbng d\u1eabn n\u00e0y, ch\u00fang t\u00f4i s\u1ebd lo\u1ea1i b\u1ecf nh\u1eefng nhi\u1ec5u lo\u1ea1n v\u00e0 cung c\u1ea5p cho b\u1ea1n nh\u1eefng hi\u1ec3u bi\u1ebft r\u00f5 r\u00e0ng, chuy\u00ean gia v\u1ec1 vi\u1ec7c ch\u1ecdn l\u1ef1a nam ch\u00e2m ho\u00e0n h\u1ea3o\u2014\u0111\u01b0\u1ee3c h\u1ed7 tr\u1ee3 b\u1edfi s\u1ef1 tin c\u1eady c\u1ee7a NBAEM trong c\u00e1c gi\u1ea3i ph\u00e1p t\u1eeb t\u00ednh ch\u1ea5t l\u01b0\u1ee3ng cao. S\u1eb5n s\u00e0ng \u0111\u1ec3 khai th\u00e1c to\u00e0n b\u1ed9 ti\u1ec1m n\u0103ng c\u1ee7a \u0111\u1ed9ng c\u01a1 c\u1ee7a b\u1ea1n ch\u01b0a? H\u00e3y b\u1eaft \u0111\u1ea7u n\u00e0o!<\/p>\n<h2>\u0110\u1ed9ng c\u01a1 kh\u00f4ng ch\u1ed5i than DC l\u00e0 g\u00ec<\/h2>\n<p>\u0110\u1ed9ng c\u01a1 kh\u00f4ng ch\u1ed5i than DC (BLDC) l\u00e0 m\u1ed9t \u0111\u1ed9ng c\u01a1 \u0111i\u1ec7n ho\u1ea1t \u0111\u1ed9ng m\u00e0 kh\u00f4ng c\u1ea7n ch\u1ed5i than, kh\u00e1c v\u1edbi c\u00e1c \u0111\u1ed9ng c\u01a1 ch\u1ed5i than truy\u1ec1n th\u1ed1ng. Thi\u1ebft k\u1ebf n\u00e0y mang l\u1ea1i hi\u1ec7u qu\u1ea3 cao h\u01a1n, tu\u1ed5i th\u1ecd d\u00e0i h\u01a1n v\u00e0 ho\u1ea1t \u0111\u1ed9ng \u00eam \u00e1i h\u01a1n, khi\u1ebfn c\u00e1c \u0111\u1ed9ng c\u01a1 BLDC ph\u1ed5 bi\u1ebfn trong xe \u0111i\u1ec7n, drone v\u00e0 thi\u1ebft b\u1ecb gia d\u1ee5ng.<\/p>\n<h3>Nguy\u00ean l\u00fd ho\u1ea1t \u0111\u1ed9ng c\u01a1 b\u1ea3n c\u1ee7a \u0111\u1ed9ng c\u01a1 BLDC<\/h3>\n<p>\u0110\u1ed9ng c\u01a1 BLDC ho\u1ea1t \u0111\u1ed9ng d\u1ef1a tr\u00ean nguy\u00ean l\u00fd c\u1ee7a \u0111i\u1ec7n t\u1eeb. Thay v\u00ec ch\u1ed5i than, ch\u00fang s\u1eed d\u1ee5ng b\u1ed9 \u0111i\u1ec1u khi\u1ec3n \u0111i\u1ec7n t\u1eed \u0111\u1ec3 chuy\u1ec3n \u0111\u1ed5i d\u00f2ng \u0111i\u1ec7n trong c\u00e1c cu\u1ed9n d\u00e2y stator. \u0110i\u1ec1u n\u00e0y t\u1ea1o ra m\u1ed9t tr\u01b0\u1eddng t\u1eeb quay t\u01b0\u01a1ng t\u00e1c v\u1edbi c\u00e1c nam ch\u00e2m v\u0129nh c\u1eedu tr\u00ean rotor, khi\u1ebfn rotor quay. Th\u1eddi \u0111i\u1ec3m ch\u00ednh x\u00e1c c\u1ee7a vi\u1ec7c chuy\u1ec3n \u0111\u1ed5i d\u00f2ng \u0111i\u1ec7n n\u00e0y r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o ho\u1ea1t \u0111\u1ed9ng m\u01b0\u1ee3t m\u00e0 v\u00e0 hi\u1ec7u qu\u1ea3.<\/p>\n<h3>C\u00e1c th\u00e0nh ph\u1ea7n ch\u00ednh c\u1ee7a \u0111\u1ed9ng c\u01a1 BLDC v\u1edbi tr\u1ecdng t\u00e2m v\u00e0o h\u1ec7 th\u1ed1ng t\u1eeb c\u1ee7a rotor<\/h3>\n<p>C\u00e1c b\u1ed9 ph\u1eadn ch\u00ednh c\u1ee7a \u0111\u1ed9ng c\u01a1 BLDC bao g\u1ed3m stator, rotor, b\u1ed9 \u0111i\u1ec1u khi\u1ec3n \u0111i\u1ec7n t\u1eed v\u00e0 nam ch\u00e2m. Rotor ch\u1ee9a c\u00e1c nam ch\u00e2m v\u0129nh c\u1eedu m\u1ea1nh m\u1ebd, \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng. Nh\u1eefng nam ch\u00e2m n\u00e0y t\u1ea1o ra m\u1ed9t tr\u01b0\u1eddng t\u1eeb \u1ed5n \u0111\u1ecbnh m\u00e0 c\u00e1c cu\u1ed9n d\u00e2y stator t\u01b0\u01a1ng t\u00e1c \u0111\u1ec3 t\u1ea1o m\u00f4-men xo\u1eafn. Ch\u1ea5t l\u01b0\u1ee3ng v\u00e0 lo\u1ea1i nam ch\u00e2m rotor \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn hi\u1ec7u su\u1ea5t c\u1ee7a \u0111\u1ed9ng c\u01a1.<\/p>\n<h3>T\u1ea1i sao nam ch\u00e2m l\u1ea1i quan tr\u1ecdng trong ho\u1ea1t \u0111\u1ed9ng c\u1ee7a \u0111\u1ed9ng c\u01a1 BLDC<\/h3>\n<p>Nam ch\u00e2m l\u00e0 trung t\u00e2m c\u1ee7a ch\u1ee9c n\u0103ng \u0111\u1ed9ng c\u01a1 BLDC. N\u1ebfu kh\u00f4ng c\u00f3 nam ch\u00e2m m\u1ea1nh m\u1ebd, \u0111\u00e1ng tin c\u1eady tr\u00ean rotor, \u0111\u1ed9ng c\u01a1 kh\u00f4ng th\u1ec3 t\u1ea1o ra \u0111\u1ee7 flux t\u1eeb \u0111\u1ec3 sinh m\u00f4-men xo\u1eafn hi\u1ec7u qu\u1ea3. Nam ch\u00e2m hi\u1ec7u su\u1ea5t cao \u0111\u1ea3m b\u1ea3o chuy\u1ec3n \u0111\u1ed5i n\u0103ng l\u01b0\u1ee3ng t\u1ed1t h\u01a1n, m\u00f4-men xo\u1eafn l\u1edbn h\u01a1n v\u00e0 hi\u1ec7u qu\u1ea3 t\u1ed5ng th\u1ec3 \u0111\u01b0\u1ee3c c\u1ea3i thi\u1ec7n. \u0110\u00f3 l\u00e0 l\u00fd do t\u1ea1i sao vi\u1ec7c ch\u1ecdn l\u1ef1a v\u1eadt li\u1ec7u v\u00e0 c\u1ea5p \u0111\u1ed9 nam ch\u00e2m ph\u00f9 h\u1ee3p l\u00e0 r\u1ea5t quan tr\u1ecdng khi thi\u1ebft k\u1ebf ho\u1eb7c n\u00e2ng c\u1ea5p \u0111\u1ed9ng c\u01a1 BLDC.<\/p>\n<h2>C\u00e1c lo\u1ea1i nam ch\u00e2m s\u1eed d\u1ee5ng trong \u0111\u1ed9ng c\u01a1 BLDC<\/h2>\n<p><img decoding=\"async\" class=\"\" src=\"https:\/\/nbaem.com\/wp-content\/uploads\/2025\/09\/BLDC_Motor_Magnet_Types_Comparison_XVenru1LE.webp\" alt=\"So s\u00e1nh c\u00e1c lo\u1ea1i nam ch\u00e2m \u0111\u1ed9ng c\u01a1 BLDC\" width=\"412\" height=\"307\" \/><\/p>\n<p>\u0110\u1ed9ng c\u01a1 kh\u00f4ng ch\u1ed5i than DC d\u1ef1a v\u00e0o c\u00e1c nam ch\u00e2m m\u1ea1nh m\u1ebd, \u0111\u00e1ng tin c\u1eady \u0111\u1ec3 cung c\u1ea5p hi\u1ec7u su\u1ea5t. Ba lo\u1ea1i nam ch\u00e2m ch\u00ednh \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong \u0111\u1ed9ng c\u01a1 BLDC l\u00e0 Neodymium Iron Boron (NdFeB), Ferrite Ceramic v\u00e0 Samarium Cobalt (SmCo). M\u1ed7i lo\u1ea1i c\u00f3 \u0111\u1eb7c t\u00ednh t\u1eeb kh\u00e1c nhau, \u0111\u1ed9 m\u1ea1nh v\u00e0 \u1ee9ng d\u1ee5ng ph\u00f9 h\u1ee3p nh\u1ea5t.<\/p>\n<h3>C\u00e1c lo\u1ea1i nam ch\u00e2m ph\u1ed5 bi\u1ebfn<\/h3>\n<table>\n<thead>\n<tr>\n<th>Lo\u1ea1i nam ch\u00e2m<\/th>\n<th>C\u00e1c \u0111\u1eb7c \u0111i\u1ec3m ch\u00ednh<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Neodymium S\u1eaft Boron (NdFeB)<\/td>\n<td>\u0110\u1ed9 m\u1ea1nh t\u1eeb cao nh\u1ea5t, s\u1ea3n ph\u1ea9m n\u0103ng l\u01b0\u1ee3ng (BHmax) xu\u1ea5t s\u1eafc, ti\u1ebft ki\u1ec7m chi ph\u00ed nh\u01b0ng nh\u1ea1y c\u1ea3m v\u1edbi nhi\u1ec7t<\/td>\n<\/tr>\n<tr>\n<td>G\u1ed1m s\u1ee9 Ferrite<\/td>\n<td>\u0110\u1ed9 m\u1ea1nh t\u1eeb th\u1ea5p h\u01a1n, r\u1ea5t ph\u1ea3i ch\u0103ng, ch\u1ed1ng \u0103n m\u00f2n t\u1ed1t, \u1ed5n \u0111\u1ecbnh \u1edf nhi\u1ec7t \u0111\u1ed9 cao nh\u01b0ng c\u1ed3ng k\u1ec1nh<\/td>\n<\/tr>\n<tr>\n<td>Cobalt Samari (SmCo)<\/td>\n<td>\u1ed4n \u0111\u1ecbnh nhi\u1ec7t \u0111\u1ed9 cao, ch\u1ed1ng \u0103n m\u00f2n t\u1ed1t, \u0111\u1ed9 m\u1ea1nh t\u1eeb trung b\u00ecnh, \u0111\u1eaft h\u01a1n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>So s\u00e1nh c\u00e1c \u0111\u1eb7c t\u00ednh t\u1eeb tr\u01b0\u1eddng<\/h3>\n<table>\n<thead>\n<tr>\n<th>Thu\u1ed9c t\u00ednh<\/th>\n<th>NdFeB<\/th>\n<th>G\u1ed1m s\u1ee9 Ferrite<\/th>\n<th>SmCo<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Kh\u1ea3 n\u0103ng ch\u1ed1ng m\u1ea5t t\u1eeb<\/td>\n<td>Cao<\/td>\n<td>V\u1eeba ph\u1ea3i<\/td>\n<td>R\u1ea5t cao<\/td>\n<\/tr>\n<tr>\n<td>S\u1ea3n ph\u1ea9m n\u0103ng l\u01b0\u1ee3ng (BHmax)<\/td>\n<td>R\u1ea5t cao<\/td>\n<td>Th\u1ea5p<\/td>\n<td>Cao<\/td>\n<\/tr>\n<tr>\n<td>\u1ed4n \u0111\u1ecbnh nhi\u1ec7t \u0111\u1ed9<\/td>\n<td>Trung b\u00ecnh (\u0111\u1ebfn kho\u1ea3ng 150\u00b0C)<\/td>\n<td>Cao (c\u00f3 th\u1ec3 v\u01b0\u1ee3t qu\u00e1 250\u00b0C)<\/td>\n<td>Xu\u1ea5t s\u1eafc (&gt;300\u00b0C)<\/td>\n<\/tr>\n<tr>\n<td>Ch\u1ed1ng \u0103n m\u00f2n<\/td>\n<td>Th\u1ea5p (c\u1ea7n ph\u1ee7 l\u1edbp b\u1ea3o v\u1ec7)<\/td>\n<td>Cao (t\u1ef1 nhi\u00ean)<\/td>\n<td>Cao (t\u1ef1 nhi\u00ean)<\/td>\n<\/tr>\n<tr>\n<td>Gi\u00e1 th\u00e0nh<\/td>\n<td>V\u1eeba ph\u1ea3i<\/td>\n<td>Th\u1ea5p<\/td>\n<td>Cao<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>\u01afu \u0111i\u1ec3m v\u00e0 nh\u01b0\u1ee3c \u0111i\u1ec3m<\/h3>\n<ul>\n<li><strong>NdFeB<\/strong>: T\u1ed1t nh\u1ea5t cho \u0111\u1ed9ng c\u01a1 BLDC c\u00f4ng su\u1ea5t l\u1edbn, k\u00edch th\u01b0\u1edbc nh\u1ecf g\u1ecdn. Cung c\u1ea5p hi\u1ec7u su\u1ea5t tuy\u1ec7t v\u1eddi nh\u01b0ng y\u00eau c\u1ea7u l\u1edbp ph\u1ee7 b\u1ea3o v\u1ec7 v\u00e0 qu\u1ea3n l\u00fd nhi\u1ec7t c\u1ea9n th\u1eadn.<\/li>\n<li><strong>G\u1ed1m s\u1ee9 Ferrite<\/strong>: Ph\u00f9 h\u1ee3p cho c\u00e1c \u0111\u1ed9ng c\u01a1 ng\u00e2n s\u00e1ch ph\u00f9 h\u1ee3p, n\u01a1i k\u00edch th\u01b0\u1edbc v\u00e0 tr\u1ecdng l\u01b0\u1ee3ng kh\u00f4ng qu\u00e1 quan tr\u1ecdng, th\u01b0\u1eddng d\u00f9ng trong c\u00e1c thi\u1ebft b\u1ecb gia d\u1ee5ng.<\/li>\n<li><strong>SmCo<\/strong>: L\u00fd t\u01b0\u1edfng cho c\u00e1c \u0111\u1ed9ng c\u01a1 trong \u0111i\u1ec1u ki\u1ec7n kh\u1eafc nghi\u1ec7t ho\u1eb7c m\u00f4i tr\u01b0\u1eddng nhi\u1ec7t \u0111\u1ed9 cao nh\u01b0 h\u00e0ng kh\u00f4ng v\u0169 tr\u1ee5 ho\u1eb7c \u1ee9ng d\u1ee5ng c\u00f4ng nghi\u1ec7p nh\u1edd \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh v\u00e0 kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n xu\u1ea5t s\u1eafc.<\/li>\n<\/ul>\n<h3>\u1ee8ng d\u1ee5ng d\u1ef1a tr\u00ean th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt c\u1ee7a \u0111\u1ed9ng c\u01a1<\/h3>\n<ul>\n<li>\n<h3>Xe \u0111i\u1ec7n v\u00e0 Drone<\/h3>\n<p>Ch\u1ee7 y\u1ebfu s\u1eed d\u1ee5ng nam ch\u00e2m NdFeB v\u00ec m\u1eadt \u0111\u1ed9 n\u0103ng l\u01b0\u1ee3ng cao v\u00e0 hi\u1ec7u qu\u1ea3.<\/li>\n<li>\n<h3>Thi\u1ebft b\u1ecb gia d\u1ee5ng<\/h3>\n<p>Th\u01b0\u1eddng d\u00f9ng ferrite v\u00ec chi ph\u00ed h\u1ee3p l\u00fd v\u00e0 hi\u1ec7u su\u1ea5t \u0111\u1ee7 t\u1ed1t.<\/li>\n<li>\n<h3>M\u00f4i tr\u01b0\u1eddng nhi\u1ec7t \u0111\u1ed9 cao ho\u1eb7c kh\u1eafc nghi\u1ec7t<\/h3>\n<p>Nam ch\u00e2m SmCo \u0111\u01b0\u1ee3c \u01b0u ti\u00ean khi \u0111\u1ed9ng c\u01a1 ph\u1ea3i \u0111\u1ed1i m\u1eb7t v\u1edbi nhi\u1ec7t \u0111\u1ed9 c\u1ef1c cao ho\u1eb7c \u0111i\u1ec1u ki\u1ec7n \u0103n m\u00f2n.<\/li>\n<\/ul>\n<p>L\u1ef1a ch\u1ecdn lo\u1ea1i nam ch\u00e2m ph\u00f9 h\u1ee3p \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn hi\u1ec7u qu\u1ea3, k\u00edch th\u01b0\u1edbc, \u0111\u1ed9 b\u1ec1n c\u1ee7a \u0111\u1ed9ng c\u01a1 v\u00e0 t\u1ed5ng chi ph\u00ed. \u0110\u1ec3 bi\u1ebft th\u00eam chi ti\u1ebft v\u1ec1 c\u00e1c lo\u1ea1i nam ch\u00e2m v\u00e0 l\u1ee3i \u00edch c\u1ee7a ch\u00fang, h\u00e3y xem <span style=\"color: #ff6600;\"><strong><a style=\"color: #ff6600;\" href=\"https:\/\/nbaem.com\/vi\/neodymium-magnets-vs-ceramic-magnets\/\" target=\"_blank\" rel=\"noopener\">Nam ch\u00e2m Neodymium so v\u1edbi nam ch\u00e2m ceramic<\/a>.<\/strong><\/span><\/p>\n<h2>C\u00e1c \u0111\u1eb7c t\u00ednh t\u1eeb tr\u01b0\u1eddng ch\u00ednh \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn hi\u1ec7u su\u1ea5t c\u1ee7a \u0111\u1ed9ng c\u01a1 BLDC<\/h2>\n<p>Khi n\u00f3i \u0111\u1ebfn \u0111\u1ed9ng c\u01a1 kh\u00f4ng ch\u1ed5i than DC, nam ch\u00e2m l\u00e0 y\u1ebfu t\u1ed1 thay \u0111\u1ed5i cu\u1ed9c ch\u01a1i. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 c\u00e1c \u0111\u1eb7c t\u00ednh t\u1eeb tr\u01b0\u1eddng ch\u00ednh \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn hi\u1ec7u su\u1ea5t ho\u1ea1t \u0111\u1ed9ng c\u1ee7a \u0111\u1ed9ng c\u01a1 BLDC c\u1ee7a b\u1ea1n:<\/p>\n<h3>M\u1eadt \u0111\u1ed9 t\u1eeb th\u00f4ng v\u00e0 S\u1ea3n ph\u1ea9m n\u0103ng l\u01b0\u1ee3ng (BHmax):<\/h3>\n<p>\u0110i\u1ec1u n\u00e0y \u0111o m\u1ee9c \u0111\u1ed9 m\u1ea1nh v\u00e0 t\u1eadp trung c\u1ee7a tr\u01b0\u1eddng t\u1eeb c\u1ee7a nam ch\u00e2m. BHmax cao h\u01a1n c\u00f3 ngh\u0129a l\u00e0 nam ch\u00e2m c\u00f3 th\u1ec3 t\u1ea1o ra nhi\u1ec1u flux t\u1eeb h\u01a1n trong k\u00edch th\u01b0\u1edbc nh\u1ecf h\u01a1n, \u0111i\u1ec1u n\u00e0y d\u1eabn \u0111\u1ebfn m\u00f4-men xo\u1eafn v\u00e0 c\u00f4ng su\u1ea5t c\u1ee7a \u0111\u1ed9ng c\u01a1 t\u1ed1t h\u01a1n.<\/p>\n<h3>Kh\u1ea3 n\u0103ng ch\u1ecbu nhi\u1ec7t v\u00e0 \u1ed5n \u0111\u1ecbnh nhi\u1ec7t:<\/h3>\n<p>Nam ch\u00e2m trong \u0111\u1ed9ng c\u01a1 BLDC ph\u1ea3i ch\u1ecbu nhi\u1ec7t t\u1eeb d\u00f2ng \u0111i\u1ec7n v\u00e0 \u0111i\u1ec1u ki\u1ec7n m\u00f4i tr\u01b0\u1eddng. Nam ch\u00e2m c\u00f3 \u0111\u1ed9 \u1ed5n \u0111\u1ecbnh nhi\u1ec7t t\u1ed1t gi\u1eef \u0111\u01b0\u1ee3c s\u1ee9c m\u1ea1nh t\u1eeb c\u1ee7a ch\u00fang ngay c\u1ea3 \u1edf nhi\u1ec7t \u0111\u1ed9 cao, tr\u00e1nh gi\u1ea3m hi\u1ec7u su\u1ea5t trong qu\u00e1 tr\u00ecnh s\u1eed d\u1ee5ng k\u00e9o d\u00e0i.<\/p>\n<h3>Kh\u1ea3 n\u0103ng ch\u1ed1ng \u0103n m\u00f2n v\u00e0 c\u00e1c l\u1ef1a ch\u1ecdn l\u1edbp ph\u1ee7:<\/h3>\n<p>Nhi\u1ec1u lo\u1ea1i nam ch\u00e2m, \u0111\u1eb7c bi\u1ec7t l\u00e0 Neodymium, c\u00f3 th\u1ec3 b\u1ecb \u0103n m\u00f2n theo th\u1eddi gian. L\u1edbp ph\u1ee7 b\u1ea3o v\u1ec7 nh\u01b0 nickel ho\u1eb7c epoxy ng\u0103n ng\u1eeba r\u1ec9 s\u00e9t v\u00e0 k\u00e9o d\u00e0i tu\u1ed5i th\u1ecd c\u1ee7a nam ch\u00e2m, \u0111i\u1ec1u n\u00e0y r\u1ea5t quan tr\u1ecdng \u0111\u1ed1i v\u1edbi c\u00e1c \u0111\u1ed9ng c\u01a1 s\u1eed d\u1ee5ng ngo\u00e0i tr\u1eddi ho\u1eb7c trong \u0111i\u1ec1u ki\u1ec7n \u1ea9m \u01b0\u1edbt.<\/p>\n<h3>\u0110\u1ed9 b\u1ec1n c\u01a1 h\u1ecdc v\u00e0 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn \u0111\u1ed9 b\u1ec1n l\u00e2u d\u00e0i:<\/h3>\n<p>Nam ch\u00e2m m\u1ea1nh ch\u1ed1ng n\u1ee9t ho\u1eb7c v\u1ee1 v\u1ee5n trong qu\u00e1 tr\u00ecnh l\u1eafp r\u00e1p v\u00e0 v\u1eadn h\u00e0nh. S\u1ee9c b\u1ec1n c\u01a1 h\u1ecdc n\u00e0y gi\u00fap duy tr\u00ec \u0111\u1ed9 tin c\u1eady c\u1ee7a \u0111\u1ed9ng c\u01a1 v\u00e0 ng\u0103n ng\u1eeba m\u1ea5t hi\u1ec7u su\u1ea5t do h\u01b0 h\u1ecfng v\u1eadt l\u00fd.<\/p>\n<h3>C\u1ea5p \u0111\u1ed9 nam ch\u00e2m v\u00e0 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn m\u00f4-men xo\u1eafn, t\u1ed1c \u0111\u1ed9 v\u00e0 hi\u1ec7u qu\u1ea3:<\/h3>\n<p>C\u1ea5p \u0111\u1ed9 nam ch\u00e2m (nh\u01b0 N42, N52 cho NdFeB) x\u00e1c \u0111\u1ecbnh s\u1ea3n ph\u1ea9m n\u0103ng l\u01b0\u1ee3ng t\u1ed1i \u0111a v\u00e0 c\u00e1c th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt kh\u00e1c. Nam ch\u00e2m c\u1ea5p cao h\u01a1n th\u01b0\u1eddng t\u0103ng m\u00f4-men xo\u1eafn v\u00e0 hi\u1ec7u qu\u1ea3 c\u1ee7a \u0111\u1ed9ng c\u01a1 nh\u01b0ng c\u00f3 th\u1ec3 c\u00f3 gi\u00e1 th\u00e0nh cao h\u01a1n. L\u1ef1a ch\u1ecdn c\u1ea5p \u0111\u1ed9 ph\u00f9 h\u1ee3p ngh\u0129a l\u00e0 c\u00e2n b\u1eb1ng gi\u1eefa m\u1ee5c ti\u00eau hi\u1ec7u su\u1ea5t v\u00e0 ng\u00e2n s\u00e1ch.<\/p>\n<p>T\u00f3m l\u1ea1i, hi\u1ec3u r\u00f5 c\u00e1c \u0111\u1eb7c t\u00ednh t\u1eeb c\u1ee7a nam ch\u00e2m gi\u00fap b\u1ea1n ch\u1ecdn \u0111\u01b0\u1ee3c lo\u1ea1i nam ch\u00e2m ph\u00f9 h\u1ee3p nh\u1ea5t cho \u0111\u1ed9ng c\u01a1 BLDC c\u1ee7a m\u00ecnh, \u0111\u1ea3m b\u1ea3o ho\u1ea1t \u0111\u1ed9ng hi\u1ec7u qu\u1ea3, b\u1ec1n l\u00e2u v\u00e0 \u0111\u00e1p \u1ee9ng c\u00e1c m\u1ee5c ti\u00eau hi\u1ec7u su\u1ea5t c\u1ee7a d\u1ef1 \u00e1n.<\/p>\n<h2>C\u00e1ch ch\u1ecdn nam ch\u00e2m ph\u00f9 h\u1ee3p cho d\u1ef1 \u00e1n \u0111\u1ed9ng c\u01a1 BLDC c\u1ee7a b\u1ea1n<\/h2>\n<p>Vi\u1ec7c ch\u1ecdn nam ch\u00e2m ph\u00f9 h\u1ee3p cho \u0111\u1ed9ng c\u01a1 kh\u00f4ng ch\u1ed5i than c\u1ee7a b\u1ea1n ph\u1ee5 thu\u1ed9c v\u00e0o m\u1ed9t s\u1ed1 y\u1ebfu t\u1ed1 ch\u00ednh. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 nh\u1eefng \u0111i\u1ec1u c\u1ea7n l\u01b0u \u00fd:<\/p>\n<h3>C\u00e1c y\u1ebfu t\u1ed1 c\u1ea7n xem x\u00e9t<\/h3>\n<ul>\n<li><strong>K\u00edch th\u01b0\u1edbc \u0111\u1ed9ng c\u01a1:<\/strong> C\u00e1c \u0111\u1ed9ng c\u01a1 l\u1edbn h\u01a1n th\u01b0\u1eddng c\u1ea7n nam ch\u00e2m m\u1ea1nh h\u01a1n v\u1edbi n\u0103ng l\u01b0\u1ee3ng cao h\u01a1n. C\u00e1c \u0111\u1ed9ng c\u01a1 nh\u1ecf h\u01a1n, nh\u01b0 trong drone, y\u00eau c\u1ea7u nam ch\u00e2m nh\u1eb9 h\u01a1n \u0111\u1ec3 gi\u1ea3m tr\u1ecdng l\u01b0\u1ee3ng.<\/li>\n<li><strong>M\u00f4i tr\u01b0\u1eddng ho\u1ea1t \u0111\u1ed9ng:<\/strong> N\u1ebfu \u0111\u1ed9ng c\u01a1 c\u1ee7a b\u1ea1n ho\u1ea1t \u0111\u1ed9ng trong nhi\u1ec7t \u0111\u1ed9 cao ho\u1eb7c \u0111i\u1ec1u ki\u1ec7n \u1ea9m \u01b0\u1edbt, h\u00e3y ch\u1ecdn nam ch\u00e2m c\u00f3 kh\u1ea3 n\u0103ng ch\u1ecbu nhi\u1ec7t v\u00e0 ch\u1ed1ng \u0103n m\u00f2n t\u1ed1t.<\/li>\n<li><strong>M\u1ee5c ti\u00eau hi\u1ec7u su\u1ea5t:<\/strong> Xem x\u00e9t c\u00e1c y\u00eau c\u1ea7u v\u1ec1 m\u00f4-men xo\u1eafn, t\u1ed1c \u0111\u1ed9 v\u00e0 hi\u1ec7u qu\u1ea3. Nam ch\u00e2m c\u1ea5p cao h\u01a1n (nh\u01b0 c\u00e1c c\u1ea5p NdFeB nh\u1ea5t \u0111\u1ecbnh) c\u00f3 th\u1ec3 n\u00e2ng cao hi\u1ec7u su\u1ea5t nh\u01b0ng \u0111i k\u00e8m chi ph\u00ed cao h\u01a1n.<\/li>\n<\/ul>\n<h3>C\u00e2n b\u1eb1ng gi\u1eefa Chi ph\u00ed v\u00e0 Hi\u1ec7u su\u1ea5t<\/h3>\n<ul>\n<li><strong>Ng\u00e2n s\u00e1ch:<\/strong> Nam ch\u00e2m Neodymium mang l\u1ea1i c\u00f4ng su\u1ea5t tuy\u1ec7t v\u1eddi nh\u01b0ng c\u00f3 gi\u00e1 cao h\u01a1n. Nam ch\u00e2m ferrite r\u1ebb h\u01a1n nh\u01b0ng \u00edt m\u1ea1nh h\u01a1n.<\/li>\n<li><strong>Tu\u1ed5i th\u1ecd v\u00e0 \u0110\u1ed9 tin c\u1eady:<\/strong> \u0110\u1ea7u t\u01b0 v\u00e0o nam ch\u00e2m v\u00e0 l\u1edbp ph\u1ee7 ch\u1ea5t l\u01b0\u1ee3ng cao h\u01a1n c\u00f3 th\u1ec3 ti\u1ebft ki\u1ec7m chi ph\u00ed b\u1ea3o tr\u00ec v\u00e0 thay th\u1ebf v\u1ec1 sau.<\/li>\n<\/ul>\n<h3>Khuy\u1ebfn ngh\u1ecb cho C\u00e1c m\u1ee5c \u0111\u00edch S\u1eed d\u1ee5ng Kh\u00e1c nhau<\/h3>\n<table>\n<thead>\n<tr>\n<th>\u1ee8ng d\u1ee5ng<\/th>\n<th>Lo\u1ea1i nam ch\u00e2m \u0111\u1ec1 xu\u1ea5t<\/th>\n<th>C\u00e1c l\u00fd do ch\u00ednh<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Xe \u0111i\u1ec7n<\/td>\n<td>NdFeB ch\u1ea5t l\u01b0\u1ee3ng cao<\/td>\n<td>M\u00f4-men xo\u1eafn cao, \u1ed5n \u0111\u1ecbnh nhi\u1ec7t<\/td>\n<\/tr>\n<tr>\n<td>M\u00e1y bay kh\u00f4ng ng\u01b0\u1eddi l\u00e1i<\/td>\n<td>NdFeB nh\u1eb9, trung c\u1ea5p<\/td>\n<td>C\u00e2n b\u1eb1ng gi\u1eefa c\u00f4ng su\u1ea5t v\u00e0 tr\u1ecdng l\u01b0\u1ee3ng<\/td>\n<\/tr>\n<tr>\n<td>Thi\u1ebft b\u1ecb gia d\u1ee5ng<\/td>\n<td>Ferrite ho\u1eb7c NdFeB th\u1ea5p c\u1ea5p<\/td>\n<td>Hi\u1ec7u qu\u1ea3 v\u1ec1 chi ph\u00ed, nhu c\u1ea7u trung b\u00ecnh<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>T\u1ea7m quan tr\u1ecdng c\u1ee7a \u0111\u1ed9 ch\u00ednh x\u00e1c v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng<\/h3>\n<ul>\n<li><strong>S\u1ea3n xu\u1ea5t ch\u00ednh x\u00e1c:<\/strong> Nh\u1eefng bi\u1ebfn \u0111\u1ed5i nh\u1ecf v\u1ec1 k\u00edch th\u01b0\u1edbc ho\u1eb7c c\u01b0\u1eddng \u0111\u1ed9 c\u1ee7a nam ch\u00e2m c\u00f3 th\u1ec3 l\u00e0m l\u1ec7ch c\u00e2n b\u1eb1ng c\u1ee7a \u0111\u1ed9ng c\u01a1 v\u00e0 gi\u1ea3m hi\u1ec7u qu\u1ea3.<\/li>\n<li><strong>Ki\u1ec3m so\u00e1t ch\u1ea5t l\u01b0\u1ee3ng:<\/strong> C\u00e1c nh\u00e0 cung c\u1ea5p \u0111\u00e1ng tin c\u1eady ki\u1ec3m tra t\u00ednh nh\u1ea5t qu\u00e1n v\u1ec1 \u0111\u1ed9 c\u1ee9ng t\u1eeb, \u0111\u1ed9 t\u1eeb h\u00f3a v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng l\u1edbp ph\u1ee7\u2014\u0111\u1ea3m b\u1ea3o \u0111\u1ed9ng c\u01a1 c\u1ee7a b\u1ea1n ho\u1ea1t \u0111\u1ed9ng tr\u01a1n tru v\u00e0 b\u1ec1n l\u00e2u h\u01a1n.<\/li>\n<\/ul>\n<p>Ch\u1ecdn \u0111\u00fang lo\u1ea1i nam ch\u00e2m c\u00f3 ngh\u0129a l\u00e0 ph\u00f9 h\u1ee3p nhu c\u1ea7u c\u1ee7a \u0111\u1ed9ng c\u01a1 v\u1edbi \u0111\u1ed9 m\u1ea1nh, \u0111\u1ed9 b\u1ec1n v\u00e0 chi ph\u00ed c\u1ee7a nam ch\u00e2m. \u0110\u00f3 l\u00e0 c\u00e1ch b\u1ea1n c\u00f3 \u0111\u01b0\u1ee3c \u0111\u1ed9ng c\u01a1 BLDC hi\u1ec7u qu\u1ea3, \u0111\u00e1ng tin c\u1eady ph\u00f9 h\u1ee3p v\u1edbi y\u00eau c\u1ea7u c\u1ee7a th\u1ecb tr\u01b0\u1eddng Vi\u1ec7t Nam.<\/p>\n<h2>C\u00e1c h\u00ecnh d\u1ea1ng v\u00e0 k\u00edch th\u01b0\u1edbc nam ch\u00e2m ph\u1ed5 bi\u1ebfn cho \u0110\u1ed9ng c\u01a1 kh\u00f4ng ch\u1ed5i than DC<\/h2>\n<p>Khi n\u00f3i \u0111\u1ebfn nam ch\u00e2m cho \u0111\u1ed9ng c\u01a1 kh\u00f4ng ch\u1ed5i than (BLDC), h\u00ecnh d\u1ea1ng v\u00e0 k\u00edch th\u01b0\u1edbc th\u1ef1c s\u1ef1 quan tr\u1ecdng. Ba h\u00ecnh d\u1ea1ng nam ch\u00e2m ph\u1ed5 bi\u1ebfn nh\u1ea5t b\u1ea1n s\u1ebd g\u1eb7p l\u00e0 <strong>h\u00ecnh cung<\/strong>, <strong>h\u00ecnh kh\u1ed1i<\/strong>, v\u00e0 <strong>h\u00ecnh v\u00f2ng<\/strong> nam ch\u00e2m.<\/p>\n<ul>\n<li><strong>Nam ch\u00e2m cung<\/strong> l\u00e0 c\u00e1c \u0111o\u1ea1n cong ph\u00f9 h\u1ee3p g\u1ecdn g\u00e0ng quanh rotor. Ch\u00fang ph\u1ed5 bi\u1ebfn v\u00ec cung c\u1ea5p flux t\u1eeb m\u01b0\u1ee3t m\u00e0 v\u00e0 gi\u00fap c\u1ea3i thi\u1ec7n hi\u1ec7u su\u1ea5t \u0111\u1ed9ng c\u01a1.<\/li>\n<li><strong>Nam ch\u00e2m h\u00ecnh kh\u1ed1i<\/strong> l\u00e0 h\u00ecnh ch\u1eef nh\u1eadt v\u00e0 th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong c\u00e1c \u0111\u1ed9ng c\u01a1 nh\u1ecf h\u01a1n ho\u1eb7c n\u01a1i chi ph\u00ed l\u00e0 y\u1ebfu t\u1ed1 l\u1edbn. Ch\u00fang d\u1ec5 ch\u1ebf t\u1ea1o h\u01a1n nh\u01b0ng c\u00f3 th\u1ec3 kh\u00f4ng cung c\u1ea5p tr\u01b0\u1eddng t\u1eeb \u0111\u1ec1u \u0111\u1eb7n nh\u01b0 h\u00ecnh cung.<\/li>\n<li><strong>Nam ch\u00e2m h\u00ecnh v\u00f2ng<\/strong> l\u00e0 h\u00ecnh d\u1ea1ng gi\u1ed1ng b\u00e1nh donut v\u00e0 \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng khi c\u1ea7n m\u1ed9t tr\u01b0\u1eddng t\u1eeb h\u00ecnh tr\u00f2n \u0111\u1ea7y \u0111\u1ee7, th\u01b0\u1eddng trong c\u00e1c thi\u1ebft k\u1ebf \u0111\u1ed9ng c\u01a1 \u0111\u1eb7c bi\u1ec7t.<\/li>\n<\/ul>\n<p>Nhi\u1ec1u nh\u00e0 s\u1ea3n xu\u1ea5t \u0111\u1ed9ng c\u01a1 c\u0169ng ch\u1ecdn <strong>h\u00ecnh d\u1ea1ng nam ch\u00e2m t\u00f9y ch\u1ec9nh<\/strong> \u0111\u1ec3 ph\u00f9 h\u1ee3p ho\u00e0n h\u1ea3o v\u1edbi c\u00e1c thi\u1ebft k\u1ebf rotor \u0111\u1ed9c \u0111\u00e1o. \u0110i\u1ec1u n\u00e0y gi\u00fap t\u1ed1i \u01b0u h\u00f3a tr\u01b0\u1eddng t\u1eeb c\u1ee7a \u0111\u1ed9ng c\u01a1, c\u00f3 th\u1ec3 t\u0103ng m\u00f4-men xo\u1eafn v\u00e0 hi\u1ec7u su\u1ea5t t\u1ed5ng th\u1ec3.<\/p>\n<h3>T\u1ea1i sao h\u00ecnh d\u1ea1ng v\u00e0 k\u00edch th\u01b0\u1edbc l\u1ea1i quan tr\u1ecdng<\/h3>\n<ul>\n<li>c\u1ea3 <strong>ph\u00e2n b\u1ed1 tr\u01b0\u1eddng t\u1eeb<\/strong> ph\u1ee5 thu\u1ed9c nhi\u1ec1u v\u00e0o h\u00ecnh d\u1ea1ng c\u1ee7a nam ch\u00e2m. Nam ch\u00e2m c\u00f3 h\u00ecnh d\u1ea1ng ph\u00f9 h\u1ee3p gi\u1ea3m c\u00e1c khe h\u1edf v\u00e0 v\u00f9ng ch\u1ebft, t\u1ea1o ra l\u1ef1c h\u00fat t\u1eeb m\u1ea1nh h\u01a1n, nh\u1ea5t qu\u00e1n h\u01a1n.<\/li>\n<li>K\u00edch th\u01b0\u1edbc \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn <strong>\u0111\u1ed9 m\u1ea1nh c\u1ee7a tr\u01b0\u1eddng t\u1eeb<\/strong>. Nam ch\u00e2m l\u1edbn h\u01a1n th\u01b0\u1eddng mang l\u1ea1i nhi\u1ec1u m\u00f4-men xo\u1eafn h\u01a1n nh\u01b0ng c\u0169ng t\u0103ng tr\u1ecdng l\u01b0\u1ee3ng v\u00e0 chi ph\u00ed.<\/li>\n<li>S\u1ef1 c\u00e2n b\u1eb1ng ph\u00f9 h\u1ee3p gi\u1eefa h\u00ecnh d\u1ea1ng v\u00e0 k\u00edch th\u01b0\u1edbc gi\u00fap t\u1ed1i \u0111a h\u00f3a hi\u1ec7u qu\u1ea3 m\u00e0 kh\u00f4ng l\u00e0m \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn k\u00edch th\u01b0\u1edbc ho\u1eb7c y\u00eau c\u1ea7u c\u00f4ng su\u1ea5t c\u1ee7a \u0111\u1ed9ng c\u01a1.<\/li>\n<\/ul>\n<p>L\u1ef1a ch\u1ecdn h\u00ecnh d\u1ea1ng v\u00e0 k\u00edch th\u01b0\u1edbc nam ch\u00e2m ph\u00f9 h\u1ee3p l\u00e0 ch\u00eca kh\u00f3a \u0111\u1ec3 t\u1eadn d\u1ee5ng t\u1ed1i \u0111a \u0111\u1ed9ng c\u01a1 BLDC c\u1ee7a b\u1ea1n, d\u00f9 b\u1ea1n \u0111ang l\u00e0m vi\u1ec7c v\u1edbi drone, xe \u0111i\u1ec7n hay thi\u1ebft b\u1ecb gia d\u1ee5ng.<\/p>\n<h2>Th\u00e1ch th\u1ee9c trong s\u1ea3n xu\u1ea5t nam ch\u00e2m cho \u0111\u1ed9ng c\u01a1 BLDC<\/h2>\n<p><img decoding=\"async\" class=\"\" src=\"https:\/\/nbaem.com\/wp-content\/uploads\/2025\/09\/BLDC_Motor_Magnet_Manufacturing_Challenges_r4eeikd.webp\" alt=\"Th\u00e1ch th\u1ee9c trong s\u1ea3n xu\u1ea5t nam ch\u00e2m \u0111\u1ed9ng c\u01a1 BLDC\" width=\"895\" height=\"503\" \/><\/p>\n<p>S\u1ea3n xu\u1ea5t nam ch\u00e2m cho \u0111\u1ed9ng c\u01a1 kh\u00f4ng ch\u1ed5i than DC \u0111i k\u00e8m v\u1edbi nh\u1eefng th\u00e1ch th\u1ee9c ri\u00eang, b\u1eaft \u0111\u1ea7u t\u1eeb <strong>chu\u1ed7i cung \u1ee9ng<\/strong>. C\u00e1c v\u1eadt li\u1ec7u \u0111\u1ea5t hi\u1ebfm nh\u01b0 neodymium v\u00e0 samarium r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 s\u1ea3n xu\u1ea5t nam ch\u00e2m hi\u1ec7u su\u1ea5t cao, nh\u01b0ng kh\u1ea3 n\u0103ng cung c\u1ea5p c\u1ee7a ch\u00fang c\u00f3 th\u1ec3 b\u1ecb h\u1ea1n ch\u1ebf do c\u00e1c v\u1ea5n \u0111\u1ec1 \u0111\u1ecba ch\u00ednh tr\u1ecb v\u00e0 h\u1ea1n ch\u1ebf khai th\u00e1c m\u1ecf. \u0110i\u1ec1u n\u00e0y th\u01b0\u1eddng d\u1eabn \u0111\u1ebfn bi\u1ebfn \u0111\u1ed9ng gi\u00e1 c\u1ea3 v\u00e0 kh\u00f3 kh\u0103n trong vi\u1ec7c sourcing cho c\u00e1c nh\u00e0 cung c\u1ea5p nam ch\u00e2m v\u00e0 nh\u00e0 s\u1ea3n xu\u1ea5t \u0111\u1ed9ng c\u01a1.<\/p>\n<p><strong>Dung sai s\u1ea3n xu\u1ea5t<\/strong> l\u00e0 m\u1ed9t y\u1ebfu t\u1ed1 quan tr\u1ecdng kh\u00e1c. Ngay c\u1ea3 nh\u1eefng bi\u1ebfn th\u1ec3 nh\u1ecf v\u1ec1 k\u00edch th\u01b0\u1edbc, h\u00ecnh d\u1ea1ng ho\u1eb7c \u0111\u1eb7c t\u00ednh t\u1eeb c\u1ee7a nam ch\u00e2m c\u0169ng c\u00f3 th\u1ec3 \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn m\u00f4-men xo\u1eafn, t\u1ed1c \u0111\u1ed9 v\u00e0 hi\u1ec7u su\u1ea5t c\u1ee7a \u0111\u1ed9ng c\u01a1. \u0110\u1ed9 ch\u00ednh x\u00e1c l\u00e0 y\u1ebfu t\u1ed1 then ch\u1ed1t\u2014dung sai ch\u1eb7t ch\u1ebd \u0111\u1ea3m b\u1ea3o ph\u00e2n b\u1ed1 flux t\u1eeb \u1ed5n \u0111\u1ecbnh v\u00e0 hi\u1ec7u su\u1ea5t \u0111\u1ed9ng c\u01a1 \u1ed5n \u0111\u1ecbnh, \u0111\u00f3 l\u00e0 l\u00fd do t\u1ea1i sao ki\u1ec3m so\u00e1t ch\u1ea5t l\u01b0\u1ee3ng trong s\u1ea3n xu\u1ea5t l\u1ea1i quan tr\u1ecdng nh\u01b0 v\u1eady.<\/p>\n<p>V\u1ec1 m\u1eb7t m\u00f4i tr\u01b0\u1eddng, t\u00ednh b\u1ec1n v\u1eefng \u0111ang tr\u1edf th\u00e0nh \u01b0u ti\u00ean. T\u00e1i ch\u1ebf nam ch\u00e2m \u0111\u1ea5t hi\u1ebfm v\u00e0 gi\u1ea3m thi\u1ec3u ch\u1ea5t th\u1ea3i trong s\u1ea3n xu\u1ea5t gi\u00fap gi\u1ea3m d\u1ea5u ch\u00e2n m\u00f4i tr\u01b0\u1eddng c\u1ee7a \u0111\u1ed9ng c\u01a1 BLDC. C\u00e1c n\u1ed7 l\u1ef1c \u0111ang \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n \u0111\u1ec3 ph\u00e1t tri\u1ec3n c\u00e1c v\u1eadt li\u1ec7u nam ch\u00e2m th\u00e2n thi\u1ec7n v\u1edbi m\u00f4i tr\u01b0\u1eddng h\u01a1n v\u00e0 c\u1ea3i thi\u1ec7n c\u00f4ng ngh\u1ec7 t\u00e1i ch\u1ebf.<\/p>\n<p>Cu\u1ed1i c\u00f9ng, c\u00e1c ti\u1ebfn b\u1ed9 trong c\u00f4ng ngh\u1ec7 nam ch\u00e2m ti\u1ebfp t\u1ee5c c\u1ea3i thi\u1ec7n thi\u1ebft k\u1ebf \u0111\u1ed9ng c\u01a1 BLDC b\u1eb1ng c\u00e1ch n\u00e2ng cao \u0111\u1ed9 m\u1ea1nh t\u1eeb, kh\u1ea3 n\u0103ng ch\u1ecbu nhi\u1ec7t v\u00e0 \u0111\u1ed9 b\u1ec1n t\u1ed5ng th\u1ec3. C\u00e1c s\u00e1ng ki\u1ebfn nh\u01b0 l\u1edbp ph\u1ee7 c\u1ea3i ti\u1ebfn v\u00e0 h\u1ee3p kim m\u1edbi gi\u00fap nam ch\u00e2m tr\u1edf n\u00ean \u0111\u00e1ng tin c\u1eady v\u00e0 hi\u1ec7u qu\u1ea3 h\u01a1n, h\u1ed7 tr\u1ee3 nhu c\u1ea7u ng\u00e0y c\u00e0ng t\u0103ng v\u1ec1 c\u00e1c \u0111\u1ed9ng c\u01a1 kh\u00f4ng ch\u1ed5i than ch\u1ea5t l\u01b0\u1ee3ng cao trong c\u00e1c l\u0129nh v\u1ef1c nh\u01b0 xe \u0111i\u1ec7n, drone v\u00e0 thi\u1ebft b\u1ecb gia d\u1ee5ng.<\/p>\n<p>\u0110\u1ec3 c\u00f3 th\u00eam th\u00f4ng tin v\u1ec1 s\u1ea3n xu\u1ea5t v\u00e0 ch\u1ea5t l\u01b0\u1ee3ng nam ch\u00e2m, h\u00e3y xem <strong><span style=\"color: #ff6600;\"><a style=\"color: #ff6600;\" href=\"https:\/\/nbaem.com\/vi\/practices-in-magnetic-material-production\/\" target=\"_blank\" rel=\"noopener\">c\u00e1c th\u1ef1c h\u00e0nh trong s\u1ea3n xu\u1ea5t v\u1eadt li\u1ec7u t\u1eeb tr\u01b0\u1eddng<\/a>.<\/span><\/strong><\/p>\n<h2>Gi\u1ea3i ph\u00e1p NBAEMs - Nam ch\u00e2m ch\u1ea5t l\u01b0\u1ee3ng cao cho \u0111\u1ed9ng c\u01a1 kh\u00f4ng ch\u1ed5i than DC<\/h2>\n<p>NBAEM cung c\u1ea5p m\u1ed9t lo\u1ea1t c\u00e1c nam ch\u00e2m ch\u1ea5t l\u01b0\u1ee3ng cao ph\u00f9 h\u1ee3p cho c\u00e1c \u1ee9ng d\u1ee5ng \u0111\u1ed9ng c\u01a1 kh\u00f4ng ch\u1ed5i than DC. D\u00f2ng s\u1ea3n ph\u1ea9m c\u1ee7a h\u1ecd bao g\u1ed3m c\u00e1c lo\u1ea1i nam ch\u00e2m Neodymium Iron Boron (NdFeB) \u0111\u01b0\u1ee3c t\u1ed1i \u01b0u h\u00f3a cho c\u00e1c k\u00edch th\u01b0\u1edbc v\u00e0 nhu c\u1ea7u hi\u1ec7u su\u1ea5t kh\u00e1c nhau c\u1ee7a \u0111\u1ed9ng c\u01a1, \u0111\u1ea3m b\u1ea3o m\u1ed7i nam ch\u00e2m cung c\u1ea5p flux t\u1eeb m\u1ea1nh m\u1ebd v\u00e0 \u1ed5n \u0111\u1ecbnh nhi\u1ec7t \u0111\u00e1ng tin c\u1eady.<\/p>\n<p>C\u00e1c nam ch\u00e2m c\u1ee7a h\u1ecd tr\u1ea3i qua c\u00e1c ki\u1ec3m tra \u0111\u1ea3m b\u1ea3o ch\u1ea5t l\u01b0\u1ee3ng nghi\u00eam ng\u1eb7t \u0111\u1ec3 \u0111\u00e1p \u1ee9ng c\u00e1c ti\u00eau chu\u1ea9n qu\u1ed1c t\u1ebf, bao g\u1ed3m ki\u1ec3m tra \u0111\u1ed9 c\u01b0\u1ee1ng t\u1eeb, n\u0103ng l\u01b0\u1ee3ng (BHmax) v\u00e0 kh\u1ea3 n\u0103ng ch\u1ecbu nhi\u1ec7t. NBAEM c\u00f3 c\u00e1c ch\u1ee9ng nh\u1eadn kh\u1eb3ng \u0111\u1ecbnh cam k\u1ebft c\u1ee7a h\u1ecd v\u1ec1 hi\u1ec7u su\u1ea5t v\u00e0 \u0111\u1ed9 b\u1ec1n c\u1ee7a nam ch\u00e2m\u2014nh\u1eefng y\u1ebfu t\u1ed1 then ch\u1ed1t cho hi\u1ec7u qu\u1ea3 c\u1ee7a \u0111\u1ed9ng c\u01a1 BLDC.<\/p>\n<p>C\u00f4ng ty c\u0169ng cung c\u1ea5p d\u1ecbch v\u1ee5 s\u1ea3n xu\u1ea5t nam ch\u00e2m t\u00f9y ch\u1ec9nh, h\u1ee3p t\u00e1c ch\u1eb7t ch\u1ebd v\u1edbi c\u00e1c nh\u00e0 thi\u1ebft k\u1ebf \u0111\u1ed9ng c\u01a1 \u0111i\u1ec7n \u0111\u1ec3 t\u1ea1o ra c\u00e1c h\u00ecnh d\u1ea1ng, k\u00edch th\u01b0\u1edbc v\u00e0 \u0111\u1eb7c t\u00ednh t\u1eeb ch\u00ednh x\u00e1c. Vi\u1ec7c t\u00f9y ch\u1ec9nh n\u00e0y gi\u00fap c\u1ea3i thi\u1ec7n m\u00f4-men xo\u1eafn, t\u1ed1c \u0111\u1ed9 v\u00e0 hi\u1ec7u qu\u1ea3 t\u1ed5ng th\u1ec3 c\u1ee7a \u0111\u1ed9ng c\u01a1 cho c\u00e1c \u1ee9ng d\u1ee5ng t\u1eeb drone \u0111\u1ebfn xe \u0111i\u1ec7n.<\/p>\n<p>H\u1ed7 tr\u1ee3 kh\u00e1ch h\u00e0ng l\u00e0 \u0111i\u1ec3m m\u1ea1nh c\u1ee7a NBAEM, v\u1edbi t\u01b0 v\u1ea5n k\u1ef9 thu\u1eadt v\u00e0 h\u1ed7 tr\u1ee3 sau b\u00e1n h\u00e0ng \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o nam ch\u00e2m ph\u00f9 h\u1ee3p ho\u00e0n h\u1ea3o v\u1edbi d\u1ef1 \u00e1n \u0111\u1ed9ng c\u01a1 BLDC c\u1ee7a b\u1ea1n. Nhi\u1ec1u c\u00e2u chuy\u1ec7n th\u00e0nh c\u00f4ng n\u1ed5i b\u1eadt v\u1ec1 c\u00e1c nam ch\u00e2m c\u1ee7a NBAEM \u0111\u00e3 cung c\u1ea5p n\u0103ng l\u01b0\u1ee3ng cho c\u00e1c \u0111\u1ed9ng c\u01a1 hi\u1ec7u su\u1ea5t cao \u0111\u00f2i h\u1ecfi \u0111\u1ed9 tin c\u1eady v\u00e0 hi\u1ec7u qu\u1ea3 v\u1ec1 chi ph\u00ed. \u0110i\u1ec1u n\u00e0y khi\u1ebfn NBAEM tr\u1edf th\u00e0nh l\u1ef1a ch\u1ecdn v\u1eefng ch\u1eafc cho b\u1ea5t k\u1ef3 ai c\u1ea7n nam ch\u00e2m hi\u1ec7u su\u1ea5t cao cho \u0111\u1ed9ng c\u01a1 kh\u00f4ng ch\u1ed5i than trong th\u1ecb tr\u01b0\u1eddng Vi\u1ec7t Nam.<\/p>\n<h2>Xu h\u01b0\u1edbng t\u01b0\u01a1ng lai v\u1ec1 nam ch\u00e2m v\u00e0 c\u00f4ng ngh\u1ec7 \u0111\u1ed9ng c\u01a1 kh\u00f4ng ch\u1ed5i than<\/h2>\n<p>T\u01b0\u01a1ng lai c\u1ee7a nam ch\u00e2m cho \u0111\u1ed9ng c\u01a1 kh\u00f4ng ch\u1ed5i than g\u1eafn li\u1ec1n v\u1edbi c\u00e1c v\u1eadt li\u1ec7u m\u1edbi v\u00e0 k\u1ef9 thu\u1eadt th\u00f4ng minh. C\u00e1c nh\u00e0 nghi\u00ean c\u1ee9u \u0111ang ph\u00e1t tri\u1ec3n c\u00e1c h\u1ee3p kim \u0111\u1ea5t hi\u1ebfm th\u1ebf h\u1ec7 ti\u1ebfp theo cung c\u1ea5p s\u1ee9c m\u1ea1nh t\u1eeb tr\u01b0\u1eddng m\u1ea1nh h\u01a1n trong khi s\u1eed d\u1ee5ng \u00edt v\u1eadt li\u1ec7u h\u01a1n. \u0110i\u1ec1u n\u00e0y c\u00f3 ngh\u0129a l\u00e0 \u0111\u1ed9ng c\u01a1 c\u00f3 th\u1ec3 nh\u1ecf h\u01a1n, nh\u1eb9 h\u01a1n v\u00e0 hi\u1ec7u qu\u1ea3 h\u01a1n\u2014ho\u00e0n h\u1ea3o cho xe \u0111i\u1ec7n v\u00e0 drone, n\u01a1i m\u1ed7i ounce \u0111\u1ec1u quan tr\u1ecdng.<\/p>\n<p>Thu nh\u1ecf k\u00edch th\u01b0\u1edbc l\u00e0 m\u1ed9t xu h\u01b0\u1edbng l\u1edbn. C\u00e1c nh\u00e0 s\u1ea3n xu\u1ea5t mu\u1ed1n \u0111\u1ed9ng c\u01a1 cung c\u1ea5p nhi\u1ec1u m\u00f4-men xo\u1eafn h\u01a1n m\u00e0 kh\u00f4ng t\u0103ng k\u00edch th\u01b0\u1edbc. C\u00e1c ti\u1ebfn b\u1ed9 trong c\u00f4ng ngh\u1ec7 nam ch\u00e2m \u0111ang l\u00e0m \u0111i\u1ec1u n\u00e0y kh\u1ea3 thi b\u1eb1ng c\u00e1ch c\u1ea3i thi\u1ec7n m\u1eadt \u0111\u1ed9 flux t\u1eeb v\u00e0 kh\u1ea3 n\u0103ng ch\u1ecbu nhi\u1ec7t. Nh\u1eefng c\u1ea3i ti\u1ebfn n\u00e0y gi\u00fap duy tr\u00ec hi\u1ec7u su\u1ea5t ngay c\u1ea3 trong m\u00f4i tr\u01b0\u1eddng kh\u1eafc nghi\u1ec7t nh\u01b0 \u0111\u1ed9ng c\u01a1 \u00f4 t\u00f4 ho\u1eb7c m\u00e1y m\u00f3c c\u00f4ng nghi\u1ec7p.<\/p>\n<p>Ch\u00fang ta c\u0169ng \u0111ang ch\u1ee9ng ki\u1ebfn s\u1ef1 \u0111\u1ed5i m\u1edbi t\u1eadp trung v\u00e0o t\u00ednh b\u1ec1n v\u1eefng. C\u00e1c thi\u1ebft k\u1ebf nam ch\u00e2m m\u1edbi nh\u1eb1m gi\u1ea3m s\u1ef1 ph\u1ee5 thu\u1ed9c v\u00e0o c\u00e1c nguy\u00ean t\u1ed1 \u0111\u1ea5t hi\u1ebfm khan hi\u1ebfm ho\u1eb7c s\u1eed d\u1ee5ng nhi\u1ec1u v\u1eadt li\u1ec7u c\u00f3 th\u1ec3 t\u00e1i ch\u1ebf h\u01a1n. Th\u00eam v\u00e0o \u0111\u00f3, c\u00e1c k\u1ef9 thu\u1eadt ki\u1ec3m so\u00e1t ch\u1ea5t l\u01b0\u1ee3ng v\u00e0 \u0111\u1ed9 ch\u00ednh x\u00e1c trong s\u1ea3n xu\u1ea5t \u0111ang ti\u1ebfn b\u1ed9, \u0111\u1ea3m b\u1ea3o m\u1ed7i nam ch\u00e2m \u0111\u00e1p \u1ee9ng c\u00e1c dung sai nghi\u00eam ng\u1eb7t \u0111\u1ec3 n\u00e2ng cao hi\u1ec7u qu\u1ea3 v\u00e0 tu\u1ed5i th\u1ecd c\u1ee7a \u0111\u1ed9ng c\u01a1.<\/p>","protected":false},"excerpt":{"rendered":"<p>Kh\u00e1m ph\u00e1 nam ch\u00e2m hi\u1ec7u su\u1ea5t cao cho \u0111\u1ed9ng c\u01a1 kh\u00f4ng ch\u1ed5i than DC bao g\u1ed3m c\u00e1c lo\u1ea1i NdFeB, ferrite v\u00e0 SmCo \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 t\u1ed1i \u01b0u h\u00f3a hi\u1ec7u qu\u1ea3, \u0111\u1ed9 b\u1ec1n v\u00e0 \u0111\u1ed9 ch\u00ednh x\u00e1c b\u1edfi NBAEM<\/p>","protected":false},"author":1,"featured_media":2946,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_mi_skip_tracking":false,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-2949","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"jetpack_featured_media_url":"https:\/\/nbaem.com\/wp-content\/uploads\/2025\/09\/BLDC_Motor_Magnet_Manufacturing_Challenges_r4eeikd.webp","_links":{"self":[{"href":"https:\/\/nbaem.com\/vi\/wp-json\/wp\/v2\/posts\/2949","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/nbaem.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/nbaem.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/nbaem.com\/vi\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/nbaem.com\/vi\/wp-json\/wp\/v2\/comments?post=2949"}],"version-history":[{"count":1,"href":"https:\/\/nbaem.com\/vi\/wp-json\/wp\/v2\/posts\/2949\/revisions"}],"predecessor-version":[{"id":2950,"href":"https:\/\/nbaem.com\/vi\/wp-json\/wp\/v2\/posts\/2949\/revisions\/2950"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/nbaem.com\/vi\/wp-json\/wp\/v2\/media\/2946"}],"wp:attachment":[{"href":"https:\/\/nbaem.com\/vi\/wp-json\/wp\/v2\/media?parent=2949"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/nbaem.com\/vi\/wp-json\/wp\/v2\/categories?post=2949"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/nbaem.com\/vi\/wp-json\/wp\/v2\/tags?post=2949"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}