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FSSZG/LED恒流驱动手电筒

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README
CC-BY-4.0

LED恒流驱动手电筒

此项目的LED手电筒+移动电源功能设计由纯硬件实现 SW6106负责为电池充电和为TYPE-C口提供快充输入输出的功能 大功率LED恒流驱动电源由SW6106的另一路输出接口通过CH224K诱骗12V1.5A 18W输出得来 再由LM358运放经分流电阻采样电压和参考电压比较控制NMOS开关实现硬件可调恒流的功能
由于大功率LED工作起来发热十分严重普通的被动散热已经无法满足需求 所以此项目采用主动风冷散热 通过NTC热敏电阻实时采集散热片温度 由LM358运放构建的迟滞比较器 来控制 风扇电源开关 来控制LED散热片温度

功能参数

  1. 电池由两节18650并联 4A 高效率开关充电 18W 高效同步升压输出(同一时间只能处于一种工作模式)
  2. Type-C 支持 PD3.0/PD2.0/QC3.0/QC2.0/FCP/PE2.0/PE1.1/SFCP 快充输出,支持 PD3.0/PD2.0 快充输入
  3. 一路大功率LED恒流驱动(最大12V 1.5A 18W) 一路小功率LED恒流驱动 4个LED 灯电量指示 和1个快充LED指示灯
  4. 1个控制大功率LED按键(长按按键打开和关闭输出) 一个拨盘电位器 (控制LED亮度) 1个控制小功率LED按键(按下亮 不按灭)
  5. 12V 2006(20206.2mm) 风扇驱动 NTC温度>40°左右开启风扇 NTC温度<30°左右关闭风扇
  6. 待机功耗40uA左右 6000mAh 锂电池满电情况下 12W LED 功率全开 续航大概100分钟左右

器件信息

  1. 最终成品主要由: 外壳 + PCBA + 两节18650电池 + LED灯板 + 聚光透镜 + 散热片 + 2006风扇 + 点状激光头 + M2铜柱和平头螺丝组成
  2. 成品外壳长宽高:1204925mm 分别由外壳1和头套1组成 通过4颗M2*5平头螺丝固定 由在嘉立创3D打印生产
  3. PCBA :双层板 1.6板厚 由两块独立PCBA组成 通过4根M24双通铜柱 和 8颗M23平头螺丝连接在一起(注意方向)
  4. 18650 锂电池默认使用普通4.2V电压的 如需使用高压锂电池 需要更改SW6106相关配置电阻 容量越高续航越长
  5. LED灯板由灯珠和散热基板组成 灯板宽度<19mm 灯芯高度<1mm 灯珠必须使用平头封装否则无法安装聚光透镜 只要尺寸参数合适任意灯珠都能使用
  6. 聚光透镜由于 头套1 的结构设计只能使用直径12*高6mm的无边透镜 尽量选用玻璃材质
  7. 散热片由于结构设计只能使用 222220mm 的散热器 LED灯板可通过导热硅胶 导热双面胶等方法固定到散热片上 安装时有方向要求
  8. 2006散热风扇长宽高:20206.2mm 尺寸可以小不能大 12V供电 安装时最先安装散热风扇 导线要经外壳卡口引出
  9. 激光头尺寸:直径12mm 高<20mm 输出:3V~4.2V 最大恒流160mA供电 颜色任意 不一定要用激光头 也可以驱动其他小功率LED

购买参考

  1. LED灯板 我使用的是从投影灯上拆机的 好像是 XHP50D灯珠 网上没看的一样的 购买注意灯珠电压功率封装和基板尺寸 参数合适任意灯珠都能使用
  2. 聚光透镜:https://m.tb.cn/h.URlB8qP?tk=PnWUddMsYJw
  3. 散热片:https://m.tb.cn/h.URlBhLm?tk=c3MbddMIdLp
  4. 散热风扇 :https://m.tb.cn/h.URlB3RJ?tk=W1FuddMIzUn

注意事项

  1. 电池充电时和为其他设备充电时 大功率LED无法使用 将自动熄灭
  2. 装配时先把 头套部分装好在把导线焊在PCBA上在进行最终组装 3D打印外壳材质尽量选用耐高温的
  3. PCB板厚1.6mm 元件参数以原理图参数为准 部分元件参数需根据使用的器件重新计算 硬件资料和外壳设计资料在附件内
  4. 此项目比较复杂 新手不建议自制 相较演示图片中的作品 开源的设计都经过部分优化改进

装配演示

输入图片说明 输入图片说明 输入图片说明 输入图片说明 输入图片说明 输入图片说明 输入图片说明 输入图片说明 输入图片说明

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简介

款简易便携的大功率LED手电筒+移动电源设计方案 包含全套硬件设计和结构外壳设计资料 该方案能够支持最大18W的LED恒流驱动和18W的快充输入输出 拥有智能温控 强制风冷等功能 展开 收起
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