作者：阿博茨得

（想看洗车机电池的直接往下翻翻到底）
前段时间用电烙铁组装了两个充电宝，一个用的8节值友们都撸的亿纬25P18650，一个用的4节亿纬的50e

做好后这个21700的没事，18650的因为给孩子用，难免磕磕碰碰，因为磕碰里面的镍片焊点有松动导致出现用电快的原因，所以就有了弄个点焊机的想法。

事先考虑过电瓶点焊机控制板，但想了下手里没有大电流的电瓶—排除；也考虑过法拉电容版的，可是现在法拉电容被炒的价格虚高的一批，而且质量参差不齐，还有炸管的可能—排除，所以最后还是决定变压器款的，虽然重，但是长时间存放也不会有电容的那些缺点。

决定后就开始找物料，最关键的变压器，在本地废品站找了几家没找到微波炉的变压器，遇到一个也是功率太小放弃了，所以干脆从海鲜市场上下单一个800W的铝线变压器（铜线的太贵了），到货后先拆除次级绕组，费了老大劲总算平安拆除，然后就是次级绕组的铜线，直接买成品太贵，所以就用淘宝的各种小红包买了几次10平方的电焊线，回来拆除外皮合并到一块，最后量了下差不多30平左右，用白蜡管套住绝缘，刚开始也想过用热缩管套上然后再套白蜡管，但是热缩管套上后线会变硬，次级会非常不好绕线，所以直接上的白蜡管，次级绕了4圈，绕好后通电量了下电压4V左右，还可以，然后就是控制板了，考虑到变压器功率不是太大，所以就决定用双脉冲的了，最开始看中的是这款

刚好那几天是双十一前几天，所以就先加入了购物车等活动的那些红包可以使用后准备下手，期间也偶尔会到废品站看看有没有合适的外壳，刚好有天有个稳压器的外壳我看还可以，老板人还不错，愿意把里面东西拆了把壳子卖给我（别的老板都不愿意单独卖外壳的），按1.8一斤卖给了我，最后好像是4块左右，当时没有量，只是目测能用，谁知道拿回来量了下变压器能放下，但前面板下面是斜的放不下上面那款控制板，控制板的尺寸是6*9

所以只好重新再找合适尺寸的控制板，找了下，还真找到差不多尺寸能用的双脉冲控制板

等到双十一下单购买，还有给控制板供电的9V交流变压器，在等到货期间抽空把外壳除漆，刮原子灰（因为盖子上锈的太厉害有坑），打磨，因为要打孔所以暂未喷漆

还用实木做了个电池夹具，当时算错蝴蝶丝的长度买长了，所以这四个螺丝都是锯短过的

然后继续整点焊机，然后就是焊笔焊针，焊笔刚开始也准备买的，可刚好看到前段时间烧掉银点的大型接触器的铜排，有三块

焊针用氧化铝铜的，网上买的国产针，几块钱一根，然后就是控制板到货后先裸接线试机，刚开始参数调的有点大还有镍钢片也没有按紧导致直接钢片打穿，调解后没问题了，然后就是测量规划放进壳体的位置和孔位

只是在原来进线孔扩大后加了16A的船型开关，前面板数码管刚好能放到以前的方形开孔后面，而且大小也刚好，最合适的竟然是以前这个窗口的透明盖板刚好能用，图上固定前控制板的那根钢丝就是原壳固定透明盖板的，喷漆的过程没拍，所以大家也许看着有点跳跃，见谅！

那些字是我先喷了一遍漆后随便找笔写上的（所以写的丑也请轻喷），然后用美纹纸贴住后又喷了一遍漆，红色的装饰条也是美纹纸贴住全部别的后喷的红漆，最后撕掉美纹纸又喷了两遍清漆，所以字不会掉。

最后是焊笔改造，最开始是分体式的

因为现在天气凉了，手握住铜排还凉冰冰的，而且铜排上本来就带孔，所以准备改造成握持不冰手还能合体分体的

大家是不是看着压持焊针的压片挺别扭，那是因为我没有台钻用手枪钻打的孔手动攻的丝，所以那么歪，虽然丑不影响使用。

罗里吧嗦这么些还没展示焊接效果

参数如下图

重点洗车机电池来了

最后，组装这台点焊机最主要的成本就是变压器和控制板，变压器35包邮的，控制板我买的41A可控硅的原价55好像，减了双十一各种红包花了27块多，焊针花了十几块买了3跟，铜线应该一共花了十一二块，壳子就按5块，自喷漆是以前买的，各种螺丝什么的都是签到红包买的，总算下来也就不超100吧，关键在于过程

第一次写这么长的帖子。都手机码的字，也是想起来什么说什么，有很多过程没有拍下来，希望高手大佬指正需要改进的地方，有想自己装点焊机的也可以大家交流！

手里还有3、4十颗25P，最后想问下大家，给别人换并夕夕上撸的25P要多钱一颗啊

查看文章精彩评论，请前往什么值得买进行阅读互动

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