{"id":6364,"date":"2026-05-26T14:56:12","date_gmt":"2026-05-26T06:56:12","guid":{"rendered":"http:\/\/kkacn.com\/?post_type=blog&#038;p=6364"},"modified":"2026-07-30T11:34:59","modified_gmt":"2026-07-30T03:34:59","slug":"role-of-high-voltage-dc-contactors-in-ev-fast-charging","status":"publish","type":"blog","link":"https:\/\/kkacn.com\/ru\/blog\/role-of-high-voltage-dc-contactors-in-ev-fast-charging\/","title":{"rendered":"\u9ad8\u538b\u76f4\u6d41\u63a5\u89e6\u5668\u5728\u7535\u52a8\u6c7d\u8f66\u5feb\u901f\u5145\u7535\u7ad9\u4e2d\u7684\u4f5c\u7528\uff082026\u6307\u5357\uff09"},"content":{"rendered":"<p class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">\u5168\u7403\u5411\u7535\u52a8\u6c7d\u8f66 (EV) \u7684\u8f6c\u578b\u5728\u5f88\u5927\u7a0b\u5ea6\u4e0a\u4f9d\u8d56\u4e8e\u4e00\u4e2a\u5173\u952e\u56e0\u7d20\uff1a\u6d88\u9664\u201c\u91cc\u7a0b\u7126\u8651\u201d\u3002\u4e3a\u4e86\u5b9e\u73b0\u8fd9\u4e00\u76ee\u6807\uff0c\u6c7d\u8f66\u884c\u4e1a\u6b63\u5728\u79ef\u6781\u90e8\u7f72 3 \u7ea7\u76f4\u6d41\u5feb\u901f\u5145\u7535 (DCFC) \u7ad9\u3002\u7136\u800c\uff0c\u867d\u7136\u6d88\u8d39\u8005\u53ea\u4e0e\u65f6\u5c1a\u7684\u5145\u7535\u5c4f\u5e55\u548c\u91cd\u578b\u7535\u7f06\u8fdb\u884c\u4ea4\u4e92\uff0c\u4f46\u8fd9\u4e9b\u5145\u7535\u7ad9\u7684\u771f\u6b63\u201c\u5fc3\u810f\u201d\u9690\u85cf\u5728\u67dc\u5b50\u5185\u3002<\/span><\/p>\n<p class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">\u4e3a\u4e86\u786e\u4fdd\u5b89\u5168\u3001\u9ad8\u6548\u548c\u5feb\u901f\u7684\u7535\u529b\u4f20\u8f93\uff0c\u8fd9\u4e9b\u5145\u7535\u7ad9\u4f9d\u8d56\u4e8e\u4e00\u4e2a\u5173\u952e\u7684\u673a\u7535\u7ec4\u4ef6\uff1a\u00a0<\/span><a href=\"http:\/\/kkacn.com\/ru\/product_category\/high-voltage-dc-contactor\/\" target=\"_blank\" rel=\"noopener\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">\u9ad8\u538b\u76f4\u6d41\u63a5\u89e6\u5668<\/span><\/strong><\/a><span class=\"ng-star-inserted\">.<\/span><\/p>\n<p class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">\u5728\u8fd9\u4efd\u7efc\u5408\u6307\u5357\u4e2d\uff0c\u6211\u4eec\u5c06\u63a2\u8ba8\u76f4\u6d41\u63a5\u89e6\u5668\u5728\u7535\u52a8\u6c7d\u8f66\u5145\u7535\u4e2d\u7684\u6838\u5fc3\u529f\u80fd\u3001\u76f4\u6d41\u7535\u5f27\u6291\u5236\u7684\u6280\u672f\u6311\u6218\uff0c\u4ee5\u53ca\u5de5\u7a0b\u5e08\u5982\u4f55\u4e3a\u4e0b\u4e00\u4ee3\u5145\u7535\u57fa\u7840\u8bbe\u65bd\u9009\u62e9\u5408\u9002\u7684\u63a5\u89e6\u5668\u3002<\/span><\/p>\n<p><img fetchpriority=\"high\" decoding=\"async\" class=\"alignnone size-medium wp-image-5237\" src=\"http:\/\/kkacn.com\/wp-content\/uploads\/2025\/10\/kf20a450v-300x300.jpg\" alt=\"\" width=\"300\" 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ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/kkacn.com\/ru\/blog\/role-of-high-voltage-dc-contactors-in-ev-fast-charging\/#%E4%BA%86%E8%A7%A3%E7%94%B5%E5%8A%A8%E6%B1%BD%E8%BD%A6%E5%85%85%E7%94%B5%E6%9E%B6%E6%9E%84%EF%BC%9A%E4%BA%A4%E6%B5%81%E5%BF%AB%E9%80%9F%E5%85%85%E7%94%B5%E4%B8%8E%E7%9B%B4%E6%B5%81%E5%BF%AB%E9%80%9F%E5%85%85%E7%94%B5\" >\u4e86\u89e3\u7535\u52a8\u6c7d\u8f66\u5145\u7535\u67b6\u6784\uff1a\u4ea4\u6d41\u5feb\u901f\u5145\u7535\u4e0e\u76f4\u6d41\u5feb\u901f\u5145\u7535<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/kkacn.com\/ru\/blog\/role-of-high-voltage-dc-contactors-in-ev-fast-charging\/#%E7%94%B5%E5%8A%A8%E6%B1%BD%E8%BD%A6%E5%85%85%E7%94%B5%E5%99%A8%E4%B8%AD%E9%AB%98%E5%8E%8B%E7%9B%B4%E6%B5%81%E6%8E%A5%E8%A7%A6%E5%99%A8%E7%9A%84%E6%A0%B8%E5%BF%83%E5%8A%9F%E8%83%BD\" >\u7535\u52a8\u6c7d\u8f66\u5145\u7535\u5668\u4e2d\u9ad8\u538b\u76f4\u6d41\u63a5\u89e6\u5668\u7684\u6838\u5fc3\u529f\u80fd<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/kkacn.com\/ru\/blog\/role-of-high-voltage-dc-contactors-in-ev-fast-charging\/#1_%E5%AE%89%E5%85%A8%E7%94%B5%E6%B0%94%E9%9A%94%E7%A6%BB\" >1. \u5b89\u5168\u7535\u6c14\u9694\u79bb<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/kkacn.com\/ru\/blog\/role-of-high-voltage-dc-contactors-in-ev-fast-charging\/#2_%E5%A4%A7%E7%94%B5%E6%B5%81%E9%80%9A%E6%96%AD%E5%BC%80%E5%85%B3\" >2. \u5927\u7535\u6d41\u901a\u65ad\u5f00\u5173<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/kkacn.com\/ru\/blog\/role-of-high-voltage-dc-contactors-in-ev-fast-charging\/#3%E3%80%81%E7%B4%A7%E6%80%A5%E6%95%85%E9%9A%9C%E4%BF%9D%E6%8A%A4\" >3\u3001\u7d27\u6025\u6545\u969c\u4fdd\u62a4<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/kkacn.com\/ru\/blog\/role-of-high-voltage-dc-contactors-in-ev-fast-charging\/#%E6%9C%80%E5%A4%A7%E7%9A%84%E6%8C%91%E6%88%98%EF%BC%9A%E7%9B%B4%E6%B5%81%E7%94%B5%E5%BC%A7%E6%8A%91%E5%88%B6\" >\u6700\u5927\u7684\u6311\u6218\uff1a\u76f4\u6d41\u7535\u5f27\u6291\u5236<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/kkacn.com\/ru\/blog\/role-of-high-voltage-dc-contactors-in-ev-fast-charging\/#%E5%A6%82%E4%BD%95%E4%B8%BA%E7%94%B5%E5%8A%A8%E6%B1%BD%E8%BD%A6%E5%85%85%E7%94%B5%E7%AB%99%E9%80%89%E6%8B%A9%E5%90%88%E9%80%82%E7%9A%84%E7%9B%B4%E6%B5%81%E6%8E%A5%E8%A7%A6%E5%99%A8\" 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href=\"https:\/\/kkacn.com\/ru\/blog\/role-of-high-voltage-dc-contactors-in-ev-fast-charging\/#%E5%AE%89%E5%85%A8%E8%AE%A4%E8%AF%81\" >\u5b89\u5168\u8ba4\u8bc1<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/kkacn.com\/ru\/blog\/role-of-high-voltage-dc-contactors-in-ev-fast-charging\/#%E5%BA%93%E5%AE%A2%E5%AE%89%E7%94%B5%E6%B0%94%EF%BC%9A%E6%82%A8%E5%80%BC%E5%BE%97%E4%BF%A1%E8%B5%96%E7%9A%84%E6%96%B0%E8%83%BD%E6%BA%90%E7%94%B5%E5%8A%A8%E6%B1%BD%E8%BD%A6%E6%8E%A5%E8%A7%A6%E5%99%A8%E5%90%88%E4%BD%9C%E4%BC%99%E4%BC%B4\" >\u5e93\u5ba2\u5b89\u7535\u6c14\uff1a\u60a8\u503c\u5f97\u4fe1\u8d56\u7684\u65b0\u80fd\u6e90\u7535\u52a8\u6c7d\u8f66\u63a5\u89e6\u5668\u5408\u4f5c\u4f19\u4f34<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/kkacn.com\/ru\/blog\/role-of-high-voltage-dc-contactors-in-ev-fast-charging\/#%E5%B8%B8%E8%A7%81%E9%97%AE%E9%A2%98%E8%A7%A3%E7%AD%94%EF%BC%9A%E7%94%B5%E5%8A%A8%E6%B1%BD%E8%BD%A6%E5%85%85%E7%94%B5%E4%B8%AD%E7%9A%84%E9%AB%98%E5%8E%8B%E7%9B%B4%E6%B5%81%E6%8E%A5%E8%A7%A6%E5%99%A8\" >\u5e38\u89c1\u95ee\u9898\u89e3\u7b54\uff1a\u7535\u52a8\u6c7d\u8f66\u5145\u7535\u4e2d\u7684\u9ad8\u538b\u76f4\u6d41\u63a5\u89e6\u5668<\/a><\/li><\/ul><\/nav><\/div>\n<h2 class=\"ng-star-inserted\"><span class=\"ez-toc-section\" id=\"%E4%BA%86%E8%A7%A3%E7%94%B5%E5%8A%A8%E6%B1%BD%E8%BD%A6%E5%85%85%E7%94%B5%E6%9E%B6%E6%9E%84%EF%BC%9A%E4%BA%A4%E6%B5%81%E5%BF%AB%E9%80%9F%E5%85%85%E7%94%B5%E4%B8%8E%E7%9B%B4%E6%B5%81%E5%BF%AB%E9%80%9F%E5%85%85%E7%94%B5\"><\/span><span class=\"ng-star-inserted\">\u4e86\u89e3\u7535\u52a8\u6c7d\u8f66\u5145\u7535\u67b6\u6784\uff1a\u4ea4\u6d41\u5feb\u901f\u5145\u7535\u4e0e\u76f4\u6d41\u5feb\u901f\u5145\u7535<\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">\u8981\u7406\u89e3\u4e3a\u4ec0\u4e48\u76f4\u6d41\u63a5\u89e6\u5668\u5982\u6b64\u91cd\u8981\uff0c\u6211\u4eec\u9996\u5148\u9700\u8981\u533a\u5206\u6807\u51c6\u4ea4\u6d41\u5145\u7535\u548c\u76f4\u6d41\u5feb\u901f\u5145\u7535\u3002<\/span><\/p>\n<ul class=\"ng-star-inserted\">\n<li class=\"ng-star-inserted\">\n<p class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">\u4ea4\u6d41\u5145\u7535\uff081 \u7ea7\u548c 2 \u7ea7\uff09\uff1a<\/span><\/strong><span class=\"ng-star-inserted\">\u00a0\u5f53\u60a8\u5c06\u7535\u52a8\u6c7d\u8f66\u63d2\u5165\u6807\u51c6\u5899\u58c1\u63d2\u5ea7\u6216\u5bb6\u7528\u4ea4\u6d41\u5145\u7535\u5668\u65f6\uff0c\u8f66\u8f86\u7684\u8f66\u8f7d\u5145\u7535\u5668 (OBC) \u4f1a\u5c06\u4ea4\u6d41\u7535 (AC) \u8f6c\u6362\u4e3a\u76f4\u6d41\u7535 (DC) \u6765\u4e3a\u7535\u6c60\u5145\u7535\u3002\u7531\u4e8e OBC \u5fc5\u987b\u8db3\u591f\u5c0f\u3001\u8db3\u591f\u8f7b\u624d\u80fd\u5b89\u88c5\u5728\u6c7d\u8f66\u5185\uff0c\u56e0\u6b64\u5145\u7535\u901f\u5ea6\u672c\u8d28\u4e0a\u53d7\u5230\u9650\u5236\u3002<\/span><\/p>\n<\/li>\n<li class=\"ng-star-inserted\">\n<p class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">\u76f4\u6d41\u5feb\u901f\u5145\u7535\uff083 \u7ea7\uff09\uff1a<\/span><\/strong><span class=\"ng-star-inserted\">\u00a0\u76f4\u6d41\u5feb\u901f\u5145\u7535\u5668\u5b8c\u5168\u7ed5\u8fc7\u8f66\u8f86\u7684\u8f66\u8f7d\u5145\u7535\u5668\u3002\u4ece\u4ea4\u6d41\u7535\u5230\u76f4\u6d41\u7535\u7684\u5927\u91cf\u8f6c\u6362\u53d1\u751f\u5728\u5145\u7535\u7ad9\u5185\u90e8\u3002\u7136\u540e\uff0c\u8be5\u7ad9\u5c06\u9ad8\u538b\u76f4\u6d41\u7535\uff08\u901a\u5e38\u4e3a 400V \u81f3 800V+\uff09\u76f4\u63a5\u9988\u5165\u7535\u52a8\u6c7d\u8f66\u7684\u7535\u6c60\u7ba1\u7406\u7cfb\u7edf\u3002<\/span><\/p>\n<\/li>\n<\/ul>\n<p class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">\u7531\u4e8e\u76f4\u6d41\u5feb\u901f\u5145\u7535\u5668\u9700\u8981\u5904\u7406\u5de8\u5927\u7684\u76f4\u63a5\u76f4\u6d41\u7535\u6e90\uff0c\u56e0\u6b64\u5b83\u4eec\u9700\u8981\u5f3a\u5927\u7684\u00a0<\/span><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">\u7528\u4e8e\u7535\u52a8\u6c7d\u8f66\u5145\u7535\u7684\u76f4\u6d41\u63a5\u89e6\u5668<\/span><\/strong><span class=\"ng-star-inserted\">\u00a0\u5b89\u5168\u7ba1\u7406\u7535\u7f51\u3001\u7535\u7ad9\u7535\u6e90\u6a21\u5757\u548c\u8f66\u8f86\u4e4b\u95f4\u7684\u8fde\u63a5\u3002<\/span><\/p>\n<h2 class=\"ng-star-inserted\"><span class=\"ez-toc-section\" id=\"%E7%94%B5%E5%8A%A8%E6%B1%BD%E8%BD%A6%E5%85%85%E7%94%B5%E5%99%A8%E4%B8%AD%E9%AB%98%E5%8E%8B%E7%9B%B4%E6%B5%81%E6%8E%A5%E8%A7%A6%E5%99%A8%E7%9A%84%E6%A0%B8%E5%BF%83%E5%8A%9F%E8%83%BD\"><\/span><span class=\"ng-star-inserted\">\u7535\u52a8\u6c7d\u8f66\u5145\u7535\u5668\u4e2d\u9ad8\u538b\u76f4\u6d41\u63a5\u89e6\u5668\u7684\u6838\u5fc3\u529f\u80fd<\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">\u9ad8\u538b\u76f4\u6d41\u63a5\u89e6\u5668\u5145\u5f53 EVSE\uff08\u7535\u52a8\u6c7d\u8f66\u4f9b\u7535\u8bbe\u5907\uff09\u7cfb\u7edf\u4e2d\u7535\u529b\u7684\u6700\u7ec8\u770b\u95e8\u4eba\u3002\u5b83\u4eec\u5177\u6709\u4e09\u4e2a\u4e3b\u8981\u529f\u80fd\uff1a<\/span><\/p>\n<h3 class=\"ng-star-inserted\"><span class=\"ez-toc-section\" id=\"1_%E5%AE%89%E5%85%A8%E7%94%B5%E6%B0%94%E9%9A%94%E7%A6%BB\"><\/span><span class=\"ng-star-inserted\">1. \u5b89\u5168\u7535\u6c14\u9694\u79bb<\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">\u5f53\u5145\u7535\u7ad9\u95f2\u7f6e\u65f6\uff0c\u6216\u5728\u7528\u6237\u5c06\u7535\u7f06\u63d2\u5165\u8f66\u8f86\u4e4b\u524d\uff0c\u5145\u7535\u5f15\u811a\u5fc5\u987b\u5b8c\u5168\u201c\u5931\u6548\u201d\u3002\u76f4\u6d41\u63a5\u89e6\u5668\u63d0\u4f9b\u7edd\u5bf9\u00a0<\/span><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">\u7535\u6d41\u9694\u79bb<\/span><\/strong><span class=\"ng-star-inserted\">\u3002\u901a\u8fc7\u4fdd\u6301\u7535\u8def\u7269\u7406\u65ad\u5f00\uff0c\u786e\u4fdd\u6ca1\u6709\u9ad8\u538b\u7535\u6d41\u5230\u8fbe\u5145\u7535\u67aa\uff0c\u4fdd\u8bc1\u7528\u6237\u5b89\u5168\u3002<\/span><\/p>\n<h3 class=\"ng-star-inserted\"><span class=\"ez-toc-section\" id=\"2_%E5%A4%A7%E7%94%B5%E6%B5%81%E9%80%9A%E6%96%AD%E5%BC%80%E5%85%B3\"><\/span><span class=\"ng-star-inserted\">2. \u5927\u7535\u6d41\u901a\u65ad\u5f00\u5173<\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">\u8fde\u63a5\u5145\u7535\u67aa\u5e76\u4e14\u5145\u7535\u7ad9\u63a7\u5236\u5668\u9a8c\u8bc1\u662f\u5426\u6ee1\u8db3\u6240\u6709\u5b89\u5168\u534f\u8bae\u540e\uff0c\u63a5\u89e6\u5668\u5fc5\u987b\u95ed\u5408\uff08\u63a5\u901a\uff09\u7535\u8def\u3002\u5728\u5feb\u901f\u5145\u7535\u8fc7\u7a0b\u4e2d\uff0c\u8fd9\u4e9b\u63a5\u89e6\u5668\u5fc5\u987b\u53ef\u9760\u5730\u627f\u8f7d\u5927\u91cf\u8fde\u7eed\u8d1f\u8f7d &#8211; \u901a\u5e38\u5728\u00a0<\/span><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">200A\u548c500A<\/span><\/strong><span class=\"ng-star-inserted\">\u2014\u4e0d\u4f1a\u8fc7\u70ed\u6216\u906d\u53d7\u8fc7\u5927\u7684\u63a5\u89e6\u7535\u963b\u3002<\/span><\/p>\n<h3 class=\"ng-star-inserted\"><span class=\"ez-toc-section\" id=\"3%E3%80%81%E7%B4%A7%E6%80%A5%E6%95%85%E9%9A%9C%E4%BF%9D%E6%8A%A4\"><\/span><span class=\"ng-star-inserted\">3\u3001\u7d27\u6025\u6545\u969c\u4fdd\u62a4<\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">\u8fd9\u4e5f\u8bb8\u662f\u6700\u5173\u952e\u7684\u89d2\u8272\u3002\u5982\u679c\u5145\u7535\u7ad9\u6216\u8f66\u8f86\u7684\u7535\u6c60\u7ba1\u7406\u7cfb\u7edf (BMS) \u68c0\u6d4b\u5230\u6545\u969c\uff08\u4f8b\u5982\u77ed\u8def\u3001\u8fc7\u538b\u4e8b\u4ef6\u6216\u70ed\u5931\u63a7\uff09\uff0c\u63a5\u89e6\u5668\u5fc5\u987b\u5145\u5f53\u6700\u540e\u4e00\u9053\u9632\u7ebf\u3002\u4ed6\u4eec\u88ab\u547d\u4ee4\u5728\u6781\u7aef\u8d1f\u8f7d\u6761\u4ef6\u4e0b\u7acb\u5373\u65ad\u5f00\uff08\u65ad\u5f00\uff09\u7535\u8def\uff0c\u9632\u6b62\u707e\u96be\u6027\u706b\u707e\u548c\u8bbe\u5907\u635f\u574f\u3002<\/span><\/p>\n<h2 class=\"ng-star-inserted\"><span class=\"ez-toc-section\" id=\"%E6%9C%80%E5%A4%A7%E7%9A%84%E6%8C%91%E6%88%98%EF%BC%9A%E7%9B%B4%E6%B5%81%E7%94%B5%E5%BC%A7%E6%8A%91%E5%88%B6\"><\/span><span class=\"ng-star-inserted\">\u6700\u5927\u7684\u6311\u6218\uff1a\u76f4\u6d41\u7535\u5f27\u6291\u5236<\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">\u4ece\u5de5\u7a0b\u89d2\u5ea6\u6765\u770b\uff0c\u65ad\u5f00\u9ad8\u538b\u76f4\u6d41\u7535\u8def\u6bd4\u65ad\u5f00\u4ea4\u6d41\u7535\u8def\u8981\u56f0\u96be\u5f97\u591a\u3002<\/span><\/p>\n<p class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">\u4ea4\u6d41\u7535\u6bcf\u79d2 50 \u81f3 60 \u6b21\u81ea\u7136\u964d\u81f3\u96f6\u4f0f\uff08\u201c\u8fc7\u96f6\u201d\u70b9\uff09\uff0c\u8fd9\u6709\u52a9\u4e8e\u81ea\u7136\u7184\u706d\u7535\u5f27\u3002\u7136\u800c\uff0c\u76f4\u6d41\u7535\u63d0\u4f9b\u8fde\u7eed\u3001\u4e0d\u95f4\u65ad\u7684\u7535\u529b\u6d41\u3002\u5f53\u63a5\u89e6\u5668\u8bd5\u56fe\u5728\u8d1f\u8f7d\u4e0b\u6253\u5f00\u9ad8\u538b\u76f4\u6d41\u7535\u8def\u65f6\uff0c\u7535\u6d41\u5b9e\u9645\u4e0a\u4f1a\u8de8\u8d8a\u6c14\u9699\uff0c\u4ea7\u751f\u5de8\u5927\u7684\u7b49\u79bb\u5b50\u70ed\u7535\u5f27\u3002\u5982\u679c\u4e0d\u52a0\u4ee5\u6291\u5236\uff0c\u8be5\u7535\u5f27\u5c06\u7194\u5316\u63a5\u89e6\u5668\u7aef\u5b50\u5e76\u5f15\u8d77\u706b\u707e\u3002<\/span><\/p>\n<p class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">\u4e3a\u4e86\u514b\u670d\u8fd9\u4e2a\u95ee\u9898\uff0c\u5148\u8fdb\u7684\u00a0<\/span><a href=\"http:\/\/kkacn.com\/ru\/product_category\/new-energy-ev-contactor\/\" target=\"_blank\" rel=\"noopener\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">\u7535\u52a8\u6c7d\u8f66\u5145\u7535\u7ad9\u63a5\u89e6\u5668<\/span><\/strong><\/a><span class=\"ng-star-inserted\">\u00a0\u5229\u7528\u590d\u6742\u7684\u00a0<\/span><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">\u76f4\u6d41\u6d88\u5f27<\/span><\/strong><span class=\"ng-star-inserted\">\u00a0\u6280\u672f\uff1a<\/span><\/p>\n<ul class=\"ng-star-inserted\">\n<li class=\"ng-star-inserted\">\n<p class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">\u78c1\u5439\u5439\u626b\uff1a<\/span><\/strong><span class=\"ng-star-inserted\">\u00a0\u9ad8\u54c1\u8d28\u76f4\u6d41\u63a5\u89e6\u5668\u4f7f\u7528\u653e\u7f6e\u5728\u89e6\u70b9\u9644\u8fd1\u7684\u5f3a\u5927\u6c38\u78c1\u4f53\u3002\u6839\u636e\u6d1b\u4f26\u5179\u5b9a\u5f8b\uff0c\u78c1\u573a\u5bf9\u7535\u5f27\u65bd\u52a0\u529b\uff0c\u5b9e\u9645\u4e0a\u662f\u201c\u5439\u52a8\u201d\u6216\u5c06\u5176\u63a8\u79bb\u89e6\u70b9\uff0c\u5e76\u5c06\u5176\u62c9\u4f38\u5230\u706d\u5f27\u5ba4\u4e2d\uff0c\u5e76\u5728\u706d\u5f27\u5ba4\u4e2d\u65ad\u5f00\u548c\u51b7\u5374\u3002<\/span><\/p>\n<\/li>\n<li class=\"ng-star-inserted\">\n<p class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">\u6c14\u5bc6\u5bc6\u5c01\u548c\u60f0\u6027\u6c14\u4f53\uff1a<\/span><\/strong><span class=\"ng-star-inserted\">\u00a0\u9ad8\u7ea7\u63a5\u89e6\u5668\u7684\u63a5\u89e6\u5ba4\u662f\u5bc6\u5c01\u7684\uff08\u901a\u5e38\u91c7\u7528\u9676\u74f7\u6216\u73af\u6c27\u6811\u8102\uff09\u5e76\u586b\u5145\u60f0\u6027\u6c14\u4f53\uff0c\u4f8b\u5982\u6c2e\u6c14\u6216\u6c22\u6c14\u6df7\u5408\u7269\u3002\u8fd9\u79cd\u6c14\u4f53\u73af\u5883\u53ef\u4ee5\u5feb\u901f\u51b7\u5374\u7b49\u79bb\u5b50\u5f27\uff0c\u5e76\u9632\u6b62\u94dc\/\u94f6\u89e6\u70b9\u968f\u7740\u65f6\u95f4\u7684\u63a8\u79fb\u800c\u6c27\u5316\u3002<\/span><\/p>\n<\/li>\n<\/ul>\n<h2 class=\"ng-star-inserted\"><span class=\"ez-toc-section\" id=\"%E5%A6%82%E4%BD%95%E4%B8%BA%E7%94%B5%E5%8A%A8%E6%B1%BD%E8%BD%A6%E5%85%85%E7%94%B5%E7%AB%99%E9%80%89%E6%8B%A9%E5%90%88%E9%80%82%E7%9A%84%E7%9B%B4%E6%B5%81%E6%8E%A5%E8%A7%A6%E5%99%A8\"><\/span><span class=\"ng-star-inserted\">\u5982\u4f55\u4e3a\u7535\u52a8\u6c7d\u8f66\u5145\u7535\u7ad9\u9009\u62e9\u5408\u9002\u7684\u76f4\u6d41\u63a5\u89e6\u5668<\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">\u5982\u679c\u60a8\u662f\u8bbe\u8ba1 3 \u7ea7\u5feb\u901f\u5145\u7535\u5668\u7684\u5de5\u7a0b\u5e08\u6216\u91c7\u8d2d\u7ecf\u7406\uff0c\u9009\u62e9\u5408\u9002\u7684\u9ad8\u538b\u76f4\u6d41\u63a5\u89e6\u5668\u5bf9\u4e8e\u5b89\u5168\u6027\u548c\u4f7f\u7528\u5bff\u547d\u81f3\u5173\u91cd\u8981\u3002\u8bf7\u8bb0\u4f4f\u4ee5\u4e0b\u56e0\u7d20\uff1a<\/span><\/p>\n<h3 class=\"ng-star-inserted\"><span class=\"ez-toc-section\" id=\"%E7%94%B5%E5%8E%8B%E5%92%8C%E7%94%B5%E6%B5%81%E9%A2%9D%E5%AE%9A%E5%80%BC\"><\/span><span class=\"ng-star-inserted\">\u7535\u538b\u548c\u7535\u6d41\u989d\u5b9a\u503c<\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">\u968f\u7740\u6c7d\u8f66\u884c\u4e1a\u4ece 400V \u67b6\u6784\u8fc5\u901f\u8f6c\u53d8\u4e3a 800V \u67b6\u6784\uff08\u4ee5\u4f7f\u7528\u66f4\u7ec6\u7684\u7535\u7f06\u5b9e\u73b0\u66f4\u5feb\u7684\u5145\u7535\u65f6\u95f4\uff09\uff0c\u60a8\u7684\u63a5\u89e6\u5668\u5fc5\u987b\u9762\u5411\u672a\u6765\u3002\u5bfb\u627e\u989d\u5b9a\u503c\u7684\u63a5\u89e6\u5668\u00a0<\/span><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">\u81f3\u5c11 1000V \u76f4\u6d41<\/span><\/strong><span class=\"ng-star-inserted\">\u00a0\u5e76\u80fd\u591f\u6ee1\u8db3\u60a8\u7684\u5cf0\u503c\u8fde\u7eed\u7535\u6d41\u8981\u6c42\uff08\u4f8b\u5982 250A\u3001400A \u6216 500A\uff09\u3002<\/span><\/p>\n<h3 class=\"ng-star-inserted\"><span class=\"ez-toc-section\" id=\"%E8%83%BD%E6%BA%90%E6%95%88%E7%8E%87%EF%BC%9A%E7%BA%BF%E5%9C%88%E8%8A%82%E8%83%BD%E5%99%A8\"><\/span><span class=\"ng-star-inserted\">\u80fd\u6e90\u6548\u7387\uff1a\u7ebf\u5708\u8282\u80fd\u5668<\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">\u5b83\u9700\u8981\u5927\u91cf\u7684\u7535\u78c1\u529b\u6765\u4fdd\u6301\u5de8\u5927\u7684\u63a5\u89e6\u7aef\u5b50\u5728\u6c89\u91cd\u7684\u590d\u4f4d\u5f39\u7c27\u7684\u4f5c\u7528\u4e0b\u95ed\u5408\u3002\u4e3a\u4e86\u9632\u6b62\u63a5\u89e6\u5668\u7684\u5185\u90e8\u7ebf\u5708\u5728 40 \u5206\u949f\u7684\u5145\u7535\u8fc7\u7a0b\u4e2d\u8fc7\u70ed\u5e76\u6d6a\u8d39\u80fd\u91cf\uff0c\u8bf7\u5bfb\u627e\u914d\u5907\u6709\u00a0<\/span><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">PWM\uff08\u8109\u51b2\u5bbd\u5ea6\u8c03\u5236\uff09\u7ebf\u5708\u8282\u80fd\u5668<\/span><\/strong><span class=\"ng-star-inserted\">\u3002\u8fd9\u4e9b\u7535\u5b50\u677f\u6700\u521d\u4f7f\u7528\u9ad8\u529f\u7387\u6765\u4f7f\u89e6\u70b9\u95ed\u5408\uff0c\u4f46\u968f\u540e\u5c06\u529f\u7387\u6025\u5267\u964d\u4f4e\u5230\u74e6\u7279\u6570\u7684\u4e00\u5c0f\u90e8\u5206\uff0c\u53ea\u662f\u4e3a\u4e86\u201c\u4fdd\u6301\u201d\u89e6\u70b9\u95ed\u5408\u3002<\/span><\/p>\n<h3 class=\"ng-star-inserted\"><span class=\"ez-toc-section\" id=\"%E5%AE%89%E5%85%A8%E8%AE%A4%E8%AF%81\"><\/span><span class=\"ng-star-inserted\">\u5b89\u5168\u8ba4\u8bc1<\/span><span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">\u7edd\u4e0d\u5728 B2B \u5408\u89c4\u6027\u65b9\u9762\u59a5\u534f\u3002\u786e\u4fdd\u60a8\u9009\u62e9\u7684\u7535\u52a8\u6c7d\u8f66\u63a5\u89e6\u5668\u5177\u6709\u516c\u8ba4\u7684\u5168\u7403\u8ba4\u8bc1\uff0c\u4f8b\u5982\u00a0<\/span><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">CE\u3001UL \u548c IEC \u6807\u51c6<\/span><\/strong><span class=\"ng-star-inserted\">\u3002\u8fd9\u5bf9\u4e8e\u5546\u4e1a\u5145\u7535\u57fa\u7840\u8bbe\u65bd\u6765\u8bf4\u662f\u6ca1\u6709\u5546\u91cf\u4f59\u5730\u7684\u3002<\/span><\/p>\n<h2 class=\"ng-star-inserted\"><span class=\"ez-toc-section\" id=\"%E5%BA%93%E5%AE%A2%E5%AE%89%E7%94%B5%E6%B0%94%EF%BC%9A%E6%82%A8%E5%80%BC%E5%BE%97%E4%BF%A1%E8%B5%96%E7%9A%84%E6%96%B0%E8%83%BD%E6%BA%90%E7%94%B5%E5%8A%A8%E6%B1%BD%E8%BD%A6%E6%8E%A5%E8%A7%A6%E5%99%A8%E5%90%88%E4%BD%9C%E4%BC%99%E4%BC%B4\"><\/span><span class=\"ng-star-inserted\">\u5e93\u5ba2\u5b89\u7535\u6c14\uff1a\u60a8\u503c\u5f97\u4fe1\u8d56\u7684\u65b0\u80fd\u6e90\u7535\u52a8\u6c7d\u8f66\u63a5\u89e6\u5668\u5408\u4f5c\u4f19\u4f34<\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">\u968f\u7740\u5bf9\u5feb\u901f\u5145\u7535\u57fa\u7840\u8bbe\u65bd\u7684\u9700\u6c42\u6fc0\u589e\uff0c\u4e0e\u7ecf\u9a8c\u4e30\u5bcc\u7684\u6c7d\u8f66\u7535\u6c14\u5236\u9020\u5546\u5408\u4f5c\u81f3\u5173\u91cd\u8981\u3002\u5728<\/span><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">\u6d59\u6c5f\u5e93\u5ba2\u5b89\u7535\u6c14<\/span><\/strong><span class=\"ng-star-inserted\">\uff0c\u6211\u4eec\u4e13\u6ce8\u4e8e\u8bbe\u8ba1\u548c\u751f\u4ea7\u575a\u56fa\u8010\u7528\u7684\u9ad8\u6027\u80fd\u76f4\u6d41\u63a5\u89e6\u5668\uff0c\u4e13\u4e3a\u6ee1\u8db3\u65b0\u80fd\u6e90\u9886\u57df\u7684\u4e25\u82db\u8981\u6c42\u800c\u8bbe\u8ba1\u3002<\/span><\/p>\n<p class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">\u6211\u4eec\u7684\u63a5\u89e6\u5668\u91c7\u7528\u5148\u8fdb\u7684\u9676\u74f7\u948e\u710a\u6280\u672f\u3001\u78c1\u5439\u706d\u5f27\u6280\u672f\u548c\u9ad8\u7eaf\u5ea6\u94f6\u5408\u91d1\u89e6\u70b9\uff0c\u53ef\u786e\u4fdd\u6781\u7aef\u8d1f\u8f7d\u4e0b\u6570\u5343\u6b21\u5b89\u5168\u5f00\u5173\u5468\u671f\u3002<\/span><\/p>\n<ul class=\"ng-star-inserted\">\n<li class=\"ng-star-inserted\">\n<p class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">\u63a2\u7d22\u6211\u4eec\u7684\u4e13\u4e1a\u4ea7\u54c1\uff1a<\/span><\/strong><span class=\"ng-star-inserted\">\u00a0<a href=\"http:\/\/kkacn.com\/ru\/product_category\/new-energy-ev-contactor\/\" target=\"_blank\" rel=\"noopener\">[\u5728\u6b64\u6d4f\u89c8\u6211\u4eec\u7684\u65b0\u80fd\u6e90\u7535\u52a8\u6c7d\u8f66\u63a5\u89e6\u5668]<\/a>\u00a0<\/span><\/p>\n<\/li>\n<li class=\"ng-star-inserted\">\n<p class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">\u4e86\u89e3\u6709\u5173\u7535\u52a8\u6c7d\u8f66\u751f\u6001\u7cfb\u7edf\u7684\u66f4\u591a\u4fe1\u606f\uff1a<\/span><\/strong><span class=\"ng-star-inserted\">\u5728\u6211\u4eec\u7684\u6307\u5357\u4e2d\u4e86\u89e3\u6211\u4eec\u7684\u7ec4\u4ef6\u5982\u4f55\u4e0e\u8f66\u8f86\u7cfb\u7edf\u96c6\u6210<a href=\"http:\/\/kkacn.com\/ru\/blog\/the-crucial-role-of-dc-contactors-in-ev-battery-management-systems-bms\/\" target=\"_blank\" rel=\"noopener\">\u3010\u76f4\u6d41\u63a5\u89e6\u5668\u5728\u7535\u52a8\u6c7d\u8f66\u7535\u6c60\u7ba1\u7406\u7cfb\u7edf\uff08BMS\uff09\u4e2d\u7684\u5173\u952e\u4f5c\u7528\u3011<\/a><\/span><span class=\"ng-star-inserted\">.<\/span><\/p>\n<\/li>\n<\/ul>\n<p class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">\u65e0\u8bba\u60a8\u662f\u8bbe\u8ba1\u4f4f\u5b85\u58c1\u7bb1\u3001\u5546\u7528 3 \u7ea7\u5feb\u901f\u5145\u7535\u5668\u8fd8\u662f\u91cd\u578b\u5546\u7528\u8f66\u5145\u7535\u4e2d\u5fc3\uff0cKKA Electrics \u90fd\u80fd\u63d0\u4f9b\u60a8\u6240\u9700\u7684\u5b9a\u5236\u89e3\u51b3\u65b9\u6848\u3002\u00a0<\/span><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">\u8bf7\u7acb\u5373\u8054\u7cfb\u6211\u4eec\u7684\u5de5\u7a0b\u56e2\u961f\u8fdb\u884c\u6280\u672f\u54a8\u8be2\u6216\u514d\u8d39\u62a5\u4ef7\u3002<\/span><\/strong><\/p>\n<h2 class=\"ng-star-inserted\"><span class=\"ez-toc-section\" id=\"%E5%B8%B8%E8%A7%81%E9%97%AE%E9%A2%98%E8%A7%A3%E7%AD%94%EF%BC%9A%E7%94%B5%E5%8A%A8%E6%B1%BD%E8%BD%A6%E5%85%85%E7%94%B5%E4%B8%AD%E7%9A%84%E9%AB%98%E5%8E%8B%E7%9B%B4%E6%B5%81%E6%8E%A5%E8%A7%A6%E5%99%A8\"><\/span><span class=\"ng-star-inserted\">\u5e38\u89c1\u95ee\u9898\u89e3\u7b54\uff1a\u7535\u52a8\u6c7d\u8f66\u5145\u7535\u4e2d\u7684\u9ad8\u538b\u76f4\u6d41\u63a5\u89e6\u5668<\/span><span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">\u95ee\uff1a\u7535\u52a8\u6c7d\u8f66\u5145\u7535\u4e2d\u4ea4\u6d41\u7ee7\u7535\u5668\u548c\u76f4\u6d41\u63a5\u89e6\u5668\u6709\u4ec0\u4e48\u533a\u522b\uff1f<\/span><\/strong><br class=\"ng-star-inserted\" \/><br \/>\n<span class=\"ng-star-inserted\">\u7b54\uff1a\u867d\u7136\u4e24\u8005\u90fd\u662f\u7535\u63a7\u5f00\u5173\uff0c\u4f46\u4ea4\u6d41\u7ee7\u7535\u5668\u901a\u5e38\u7528\u4e8e\u4f4e\u529f\u7387\u4ea4\u6d41\u7535\u5e94\u7528\uff08\u4f8b\u5982 1\/2 \u7ea7\u5145\u7535\u5668\u6216\u8f85\u52a9\u8f66\u8f86\u7535\u8def\uff09\u3002\u76f4\u6d41\u63a5\u89e6\u5668\u662f\u4e13\u95e8\u91c7\u7528\u5148\u8fdb\u706d\u5f27\u6280\u672f\uff08\u5982\u78c1\u5439\u548c\u5145\u6c14\u5ba4\uff09\u8bbe\u8ba1\u7684\u91cd\u578b\u8bbe\u5907\uff0c\u53ef\u5b89\u5168\u5904\u7406\u548c\u65ad\u5f00 3 \u7ea7\u5feb\u901f\u5145\u7535\u5668\u4e2d\u7684\u5927\u91cf\u9ad8\u538b\u76f4\u6d41\u8d1f\u8f7d\u3002<\/span><\/p>\n<p class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">\u95ee\uff1a\u9ad8\u538b\u76f4\u6d41\u63a5\u89e6\u5668\u4e3a\u4ec0\u4e48\u8981\u7528\u60f0\u6027\u6c14\u4f53\uff1f<\/span><\/strong><br class=\"ng-star-inserted\" \/><br \/>\n<span class=\"ng-star-inserted\">\u7b54\uff1a\u6c2e\u6c14\u6216\u6c22\u6c14\u6df7\u5408\u7269\u7b49\u60f0\u6027\u6c14\u4f53\u88ab\u6cf5\u5165\u5bc6\u5c01\u7684\u63a5\u89e6\u5ba4\uff0c\u6709\u4e24\u4e2a\u76ee\u7684\uff1a\u9996\u5148\uff0c\u6c14\u4f53\u5feb\u901f\u51b7\u5374\u5e76\u7184\u706d\u7535\u8def\u6253\u5f00\u65f6\u5f62\u6210\u7684\u5371\u9669\u7535\u5f27\u3002\u5176\u6b21\uff0c\u5b83\u53ef\u4ee5\u7f6e\u6362\u6c27\u6c14\uff0c\u9632\u6b62\u94f6\/\u94dc\u89e6\u70b9\u968f\u7740\u65f6\u95f4\u7684\u63a8\u79fb\u800c\u6c27\u5316\u548c\u964d\u89e3\uff0c\u4ece\u800c\u663e\u7740\u5ef6\u957f\u63a5\u89e6\u5668\u7684\u4f7f\u7528\u5bff\u547d\u3002<\/span><\/p>\n<p class=\"ng-star-inserted\"><strong class=\"ng-star-inserted\"><span class=\"ng-star-inserted\">\u95ee\uff1a\u76f4\u6d41\u5feb\u5145\u7ad9\u901a\u5e38\u4f7f\u7528\u591a\u5c11\u4e2a\u76f4\u6d41\u63a5\u89e6\u5668\uff1f<\/span><\/strong><br class=\"ng-star-inserted\" \/><br \/>\n<span class=\"ng-star-inserted\">\u7b54\uff1a\u5178\u578b\u7684\u76f4\u6d41\u5feb\u901f\u5145\u7535\u7ad9\u7684\u6bcf\u4e2a\u5145\u7535\u7535\u7f06\u51fa\u53e3\u81f3\u5c11\u4f7f\u7528\u4e24\u4e2a\u4e3b\u9ad8\u538b\u76f4\u6d41\u63a5\u89e6\u5668\uff0c\u4e00\u4e2a\u7528\u4e8e\u6b63\u6781\u76f4\u6d41\u7ebf\u8def\uff0c\u4e00\u4e2a\u7528\u4e8e\u8d1f\u6781\u76f4\u6d41\u7ebf\u8def\uff08\u53cc\u6781\u914d\u7f6e\uff09\u3002\u5f53\u5145\u7535\u5668\u672a\u4e3b\u52a8\u5411\u8f66\u8f86\u4f9b\u7535\u65f6\uff0c\u8fd9\u53ef\u786e\u4fdd\u5b8c\u5168\u7684\u7535\u6d41\u9694\u79bb\u548c\u7edd\u5bf9\u5b89\u5168\u3002<\/span><\/p>","protected":false},"excerpt":{"rendered":"<p>\u5168\u7403\u5411\u7535\u52a8\u6c7d\u8f66 (EV) \u7684\u8f6c\u578b\u5728\u5f88\u5927\u7a0b\u5ea6\u4e0a\u4f9d\u8d56\u4e8e\u4e00\u4e2a\u5173\u952e\u56e0\u7d20\uff1a\u6d88\u9664\u201c\u91cc\u7a0b\u7126\u8651\u201d\u3002\u4e3a\u4e86\u5b9e\u73b0\u8fd9\u4e00\u76ee\u6807\uff0c\u6c7d\u8f66\u884c\u4e1a\u6b63\u5728\u79ef\u6781\u90e8\u7f72 3 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