知豆充电时只显示插头
作者：充电头网
前言
热豆科技推出了一款插座+充电器+无线充多合一的插座产品，产品两侧为两个国标3+2插座，并配有安全门，正面为2A2C快充接口，顶部面板内置无线充电，可为手机提供无线充电功能，搭配正面USB接口，同时为多部手机充电。
充电头网已经拿到了热豆45W充电塔，下面就进行拆解，一起看看内部的用料做工。
热豆45W充电塔开箱
包装盒正面印有产品简图以及热豆redow品牌。
底部印有商家信息，制造商为博硕科技（江西）有限公司，监制商为深圳市热豆科技有限公司，产品通过了CCC认证。
包装内含充电塔以及使用说明书等，机身黑色外壳贴有防刮塑料膜。
产品自带电源线，插头插脚套有塑料壳保护。
电源线与机身交界处设有胶套保护。
充电塔机身方柱造型设计，主体采用白色外壳，前端黑色亮面板装饰。
机身正面印有redow品牌，黑色装饰板区域设有2A2C三个USB接口。
此外还有一个隐藏功率显示屏，插电显示45W总输出功率。四个USB接口旁都印有区别标识，方便用户区别使用。
侧面设有3+2新国标组合插口。
另一侧也有一个。
插口内置安全门，可防止异物进入保证用电安全。
机身背面印有产品参数
产品名称：热豆D1充电塔 45W Magta
型号：RD-MT050
额定功率：2500W
额定电流：10A
额定电压：250V~
输入：100-240V~50/60Hz 0.8A Max
无线充电输出：15W Max
总输出功率：45W Max
制造商：博硕科技（江西）有限公司
监制商：深圳市热豆科技有限公司
机身顶部内凹，印有无线充电的闪电标识。
底部贴有防滑胶垫，外壳上印有USB接口输出参数。
USB口参数特写
单口输出：
USB-C1/C2：5V3A、9V2.22A、12V1.67A（20W Max）
USB-A1/A2：5V2A（10W Max）
双口输出：
C1+C2：5V3A（15W Max）
C1/C2+A1/A2：20W+10W（30W Max）
多口输出：
（C1+C2）+A1/A2：15W+10W（25W Max）
C1/C2+（A1+A2）：20W+10W（30W Max）
（C1+C2）+（A1+A2）：15W+10W（25W Max）
产品已经通过了CCC认证。
测得电源线长度约为143cm。
机身高度为80.98mm。
宽度为62.99mm。
厚度为63.21mm。
产品总重量约为405g。
使用ChargerLAB POWER-Z KT002测得USB-C1口支持Apple 2.4A、Samsung 5V2A、DCP协议，以及QC2.0/3.0、AFC、FCP、SCP、PE2.0、PD3.0快充协议。
此外PDO报文显示C1口还具备5V3A、9V2.22A、12V1.67A三组固定电压档位。
测得USB-C2口兼容协议和C1口的一样。
PDO报文也完全相同，即两个C口单口输出性能一样，支持功率盲插。
测得USB-A1口支持Samsung 5V2A、DCP协议
测得USB-A2口同样支持Samsung 5V2A、DCP协议
无线充电场景一览，将手机放到机身顶部即可进行无线充电，十分方便。
热豆45W充电塔拆解
在对热豆这款45W充电塔有了基本了解后，下面继续对其进行拆解，看看内部详细设计。
首先撕下底部的防滑胶垫，在胶垫下面是模块底部盖板的固定螺丝。
拆下底部盖板，内部是插座模块和USB接口的PCBA模块。
电源线使用线卡固定在模块内部，模块分为外层外壳和内部的插座模块。
剪断电源线，拆除插座模块，内部是快充模块的PCBA模块。
切开外壳，取出内部的快充模块，快充模块的顶部是无线充电线圈。
无线充电线圈四角的四颗定位磁铁。
插座模块一览，侧面使用螺丝固定安全门。
快充PCBA模块采用单独的塑料支架固定，并打白色胶水加固。
另外一面是USB输出接口小板，小板上连接器为无线充电模块供电。
连接到无线充电模块供电的导线特写。
无线充电线圈下面是无线充电的PCBA。
无线充PCBA通过螺丝固定在壳体内部。
拧下固定螺丝，无线充PCBA模块底部垫绝缘麦拉片和黄铜散热片进行散热。
无线充PCBA模块正面一览，焊接一颗无线充电主控和四颗无线充电功率管和NPO谐振电容。
背面对应开关管和主控芯片过孔散热，并标有TX Board 15W，表示支持15W无线充电。
无线充电主控来自redow热豆，丝印WP003，内置MOS管驱动器和调制解调电路，外围元件精简。
四颗NMOS管用于无线充电发射，来自禾纳，型号为AER4061BE，NMOS，耐压40V，导阻6.85mΩ，采用PDFN5060封装。
丝印701的贴片电感用于输入滤波。
电源接口特写。
无线充电线圈采用纱包线绕制。
下面来看快充模块，快充模块采用两片PCB组合焊接而成，其中一片为AC-DC电源电路，另外一片为二次降压电路，用于USB快充输出。
AC-DC电源背面焊接两颗整流桥，两颗贴片Y电容，反馈光耦和同步整流控制器。
二次降压小板上焊有降压电感和滤波电容，以及USB母座。
通过对PCBA的观察，热豆这款模块采用高频QR开关电源，搭配同步整流固定电压输出，输出送至二次降压电路，由协议芯片根据需求调节输出电压，满足负载需求。下面就从输入端开始了解整个充电器的设计与用料。
输入端导线焊接连接到PCB上供电，焊点打胶固定。
输入端延时保险丝来自贝特电子，出料号932，规格为3.15A 250V。
输入端NTC浪涌电阻来自STE松田，型号为MF72，规格为2.5D-9M。
共模电感使用漆包线和绝缘线并绕，底部焊接绝缘支架。
安规X2电容来自STE松田，规格为0.22μF。
两颗整流桥半桥连接，用于均摊发热，整流桥丝印MSB40JL。
高压滤波电容来自绿宝石，规格为400V 33μF，三颗共计99μF容量。
差模电感采用工字磁芯绕制，外套热缩管绝缘。
充电器主控芯片来自必易微，型号KP22066，是一颗合封氮化镓芯片，内部集成165mΩ导阻的氮化镓开关管，反激控制器和可靠的驱动电路。芯片内部集成高压启动电路，可缩短启动时间并降低待机功耗。同时还集成了X电容放电功能，可进一步降低待机功耗。芯片内置高可靠的氮化镓驱动，提供稳定的6.2V栅极驱动电压，同时芯片集成外部驱动开通速度调节功能，可以通过外部配置参数优化EMC，解决了高频合封氮化镓电源设计的一大难题。
KP22066采用了负压电流采样技术，驱动回路中没有采样电阻，开通时驱动电压不会受到电流采样电阻压降影响，更加高效。合封技术进一步减小了寄生参数对高频开关的影响，提高整体稳定性。KP22066具有三档工作频率可通过管脚配置，支持140kHz、300kHz、500kHz，支持9-112V供电电压，适配宽电压输出应用。
KP2206X内置峰值电流抖动功能以优化EMI，支持绿色模式和打嗝模式工作，芯片内集成了供电欠压、过压保护，集成输入欠压、过压保护，集成输出过压保护，逐周期电流限制，过载保护，过流保护，过热保护，电流采样电阻开路保护等保护措施。
值得一提的是，KP2206X合封芯片还支持双绕组为芯片供电，具有两个供电引脚，可以根据输出电压，切换供电绕组抽头。当输出电压范围宽且输出电压较高时，芯片可自动切换成低压绕组供电，降低芯片自身损耗。KP22066采用必易微专有的DFN8*8封装，将功率走线和控制走线分离，并采用大面积散热PAD，有效降低温升，具有优秀的散热性能。
为KP22066供电的滤波电容，来自凯泽鑫，规格为10μF 100V。
变压器使用胶带严密缠绕绝缘。
贴片Y电容来自四川特锐祥科技股份有限公司，型号TMY1471K，具有体积小、重量轻等特色，非常适合应用于氮化镓快充这类高密度电源产品中。
特锐祥专注于被动元器件的研发、生产及销售，注册资本1亿元。旗下有自主电容品牌两类：SMD TRX及DIP TY电容器，TRX将致力于陶瓷材料的研究，以拓展更多品类的应用，为客户提供更多的解决方案。
充电头网了解到，特锐祥贴片Y电容除了被麦多多100W氮化镓、OPPO 65W超级闪充氮化镓充电器、联想90W氮化镓快充、努比亚65W氮化镓充电器、倍思120W氮化镓+碳化硅PD快充充电器等数十款大功率充电器使用外，也可应用于海陆通、第一卫、贝尔金等品牌20W迷你快充上，性能获得客户一致认可。
另一颗贴片Y电容同样来自特锐祥，型号为TMY1221K。
光耦来自UTC友顺，型号UPC1009，用于输出电压反馈。
同步整流控制器同样来自必易微，型号为KP4060，采用了节省空间的SOT23-6封装。KP4060支持最高600kHz工作频率，满足KP22066高频开关应用。
KP4060支持DCM、BCM、CCM、QR工作模式和有源钳位 Flyback 拓扑，支持600kHz工作频率，集成高压检测电路和高压供电电路，集成智能双路LDO，无需辅助绕组供电，支持输出短路SR工作。
KP4060支持宽范围输出电压应用（0~20V），特别适用于支持QC、PD等协议的快充领域；支持高侧或低侧配置；采用Gate驱动有源钳位技术，防止寄生耦合导致的误开通；具有专利的智能电流过零关断和智能开通检测技术防止误开通，确保安全使用。
同步整流管来自东微，型号SFG10S08GF，耐压100V，导阻7mΩ，采用PDFN5*6封装。
输出两颗固态滤波电容来自钰邦，一颗规格为560μF 25V。
另一颗规格为470μF 25V。
二次降压电路一览，正面采用两路独立的降压电路，其中一路用于USB-C口降压输出，另一路用于两个USB-A口5V输出。
小板背面没有元件。
电源输入通过一颗滤波电感进行滤波。
两个USB-C口降压输出采用智融SW3556，这款芯片支持双USB-C接口降压控制，内部集成多种快充协议，支持7A大电流输出，并支持双口功率盲插和独立限流。SW3556支持驱动低压氮化镓开关管，可进一步提升降压电路效率，减小充电器的体积与散热要求。
智融SW3556为同步整流降压拓扑，支持40V输入，内置同步整流降压控制器，搭配使用硅MOS或氮化镓开关管、电感电容等简单的外围器件，即可实现140W大功率输出。内置的降压控制器开关频率为125KHz，支持PFM/PWM模式运行以优化转换效率。
此外，智融SW3556支持引脚外接电阻来配置输出功率以及动态功率分配，在开发多口快充电源产品时无需外置单片机，以此实现更精简的外围并降低成本。适用于车载充电器、多口充电器、插排等产品领域。
用于同步降压的开关管丝印N3005D，采用DFN3*3封装。
另一颗开关管同样为N3005D。
降压电感采用热缩管包裹绝缘。
输出滤波固态电容来自钰邦，规格为220μF 16V。
用于两路USB-C口的VBUS开关管和电流取样电阻。
USB-C母座采用橙色胶芯，过孔焊接固定。
USB-A口5V降压芯片采用诚芯微CX8825，是一颗耐压36V的同步降压转换器，芯片内置MOS管，支持3A输出电流，支持100%占空比，支持多种保护功能，采用SOP8封装。
对应两个USB-A口的降压电感，外套热缩管绝缘。
输出滤波固态电容来自钰邦，规格为270μF 6.3V。
USB-A母座采用过孔焊接固定，橙色胶芯。
LED指示灯有45W字样，指示通电状态。
全部拆解完毕，来张全家福。
充电头网拆解总结
热豆科技推出的多合一模块，具备USB-C快充，AC供电和无线充电功能，具备两个国标3+2插座，方便扩展交流电源，以及为便携设备充电，满足多种使用场景。热豆还同步推出了多款配件产品，使用磁吸无线充电供电，具备更高的灵活性，更提升产品的竞争力。
充电头网通过拆解了解到，热豆这款45W充电塔采用必易微合封氮化镓快充方案，内置KP22066合封氮化镓芯片搭配KP4060同步整流控制器，固定电压输出。输出采用两路二次降压电路，其中智融SW3556对应双路USB-C输出，诚芯微CX8825为USB-A口供电。
在充电塔顶部还有一个无线充电模块，使用热豆主控芯片进行控制，芯片内部集成驱动器，集成度高。并支持无线供电，配合多款配件使用。充电塔内部采用绿宝石电解电容和钰邦固态电容进行滤波，用料均为知名品牌，设计紧凑，功能实用。
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2A2C充电塔RD-MT050
宣卢轻3856手机充电显示插头图标 充不进电是怎么回事 -
苍蚂购19883376368 ______ 换个USB接口~~或者换条数据线~~或者你的电脑外接USB外围太多~~造成供电不足~把所有的拨掉再试试
宣卢轻3856lumia 800一充电就显示小插头,问题是没有充满,怎么办? -
苍蚂购19883376368 ______ 请使用原装的充电器,还有就是充电的时候电池上就是有一个小插头在跳动,如果小插头没有跳动了就代表电池充电完毕
宣卢轻3856我的iPhone为什么刚充电的时候显示的是闪电的标志一会就变成插头的标志了,这是怎么回事?跪求! -
苍蚂购19883376368 ______ 闪电的标志表示正在充电,如果出现变成插头的标志的话,你可以检查一下是不是插头没有插好
宣卢轻3856知豆D2S充电时充电指示灯常亮不闪烁为什么 -
苍蚂购19883376368 ______ 充电器指示灯闪烁表示充电器正在给电池充电,充满电后就不闪了,转为常亮指示灯.
宣卢轻3856我刚弄了个知豆但是住在13楼怎么充电 -
苍蚂购19883376368 ______ 你的楼层比较高,如果有物业的话,可以协商好,自己安装充电桩,厂家也给安装吧,这个就不清楚了,我们家楼层低,所以我们自己引线出来在门口弄个配电箱,楼上插空调的插座就行了,对了,我们也是买车才知道,新的充电插头必须接三芯的线,就是要有地线,要不用不了新的充电插头...答案仅供参考哈,我买的是知豆D1
宣卢轻3856插座上的USB口充电为什么越充电越少 -
苍蚂购19883376368 ______ 尽快更换充电方式,这说明插座上的USB口提供的电流不符合该设备充电要求,可能是插座上的供电模块故障,也可能是线的原因;不论如何,请尽早排除故障,别在继续原方式使用.
宣卢轻3856我的笔记本不显示电池图标,而显示的是一个插头?我想让他显示电池图标查看剩余电量? -
苍蚂购19883376368 ______ 一般是插着电源显示插头或者不显示图标的,拔掉电源后显示电池图标,鼠标移动到图标上自动显示剩余电量及时间,若没有显示估计是没装电源管理软件的!去官方网站下载电源管理软件安装上就会显示了!
宣卢轻3856我的ipad mini充电显示的是插座图标!不是闪电! 什么情况! -
苍蚂购19883376368 ______ 插座图标,即为充电完成,拔掉数据线看看电量是否为100%!如果电量不足100%,建议重启mini,再换个位置充电试试,如果还是一样显示插座图标,则有可能充电器出问题.
宣卢轻3856为什么iphone有时候刚开始充电就显示插头图标了 然后过会就成了闪电了 但是过会又成了插头 如此循环 -
苍蚂购19883376368 ______ 插头表示充满,闪电表示在充电.充满了就不要继续插着了,可能你的线接触不好
宣卢轻3856Phone5 充电不显示闪电, 之显示 插头图标, 我用的是品胜的线, 插电脑,插电插头 都不好使, 咋回事? -
苍蚂购19883376368 ______ 右上角电池里面如果是插座的话说明充满了,如果是电池耗尽只显示插座闪电电池的话是你的线和充电器的问题