The utility model relates to a charging treasure, a built-in charging protection circuit of the charging treasure, the output end of the positive electrode circuit of the lithium battery in the circuit, the negative input end of the cathode connection chip IC2 of the lithium battery, the negative input end of the chip IC2 through the resistance R3, the positive input end of the chip IC2 through the resistance R2, the electrical power of the resistance R1 and the output of the chip IC2. The P1.0 port of the chip IC1, the positive pole of the lithium battery is connected to the positive input end of the chip IC3 by the resistance R6, the negative input end of the chip IC3 is grounded through the resistance R5, the negative input end of the chip IC3 is connected to the power of the resistor R4, the output end of the chip IC3 is connected to the P1.1 port of the chip IC1, and the negative output of the negative electrode of the lithium battery is connected to the chip. The negative input end of C4 is connected to the power of resistance R7, the positive input end of the chip IC4 is connected to the power and grounding through the resistance R12 and the resistance R14 respectively. The rechargeable treasure designed by the utility model has overvoltage over current protection, which ensures the stable operation of the circuit, effectively prevents circuit running short circuit, and indirectly prevents the short road caused fire.
【技术实现步骤摘要】
一种充电宝
本技术涉及生活用品领域,尤其涉及一种充电宝。
技术介绍
随着手机、数码相机、掌上电脑等便携式电子设备的显示屏的增大,其耗电量也随之增加,为了满足人们对电量的要求,移动电源应运而生。然而锂离子电池对充电设备的要求比较苛刻,为了实现自动续充,需要关注充电过流、过压、放电短路、过热等情况。
技术实现思路
本技术的目的在于提供一种充电宝,以解决上述技术问题,为实现上述目的本技术采用以下技术方案:一种充电宝,充电宝内置充电保护电路,电路中锂电池的正极接电路输出端,锂电池正极接芯片IC2的负输入端,芯片IC2的负输入端经电阻R3接地,芯片IC2的正输入端经电阻R2接地,经电阻R1接电源,芯片IC2的输出端接芯片IC1的P1.0端口,锂电池的正极经电阻R6接芯片IC3的正输入端,芯片IC3的负输入端经电阻R5接地,芯片IC3的负输入端经电阻R4接电源,芯片IC3的输出端接芯片IC1的P1.1端口,锂电池的负极经电阻R8接芯片IC4的负输入端,芯片IC4的负输入端经电阻R7接电源,芯片IC4的正输入端分别经电阻R12和电阻R14接电源和接地,芯片IC4的正输入端口经电阻R9接电路输入端,芯片IC4的正输入端口同时接芯片IC5的正负输入端,芯片IC5的输出端接芯片IC1的P3.3端口,芯片IC1的P1.5端口经电阻R17接晶体管Q4的基极,晶体管Q4的发射极接地,晶体管Q4的集电极接晶体管Q1的发射极,晶体管Q1的集电极经二极管D1接发射极,晶体管Q4的集电极经二极管D4接发射极,晶体管Q1的集电极接晶体管Q2的集电极,同时晶体管Q1的集电极分别经电容C4和电容C5接地 ...
【技术保护点】
1.一种充电宝,其特征在于,充电宝内置充电保护电路,电路中锂电池的正极接电路输出端,锂电池正极接芯片IC2的负输入端,芯片IC2的负输入端经电阻R3接地,芯片IC2的正输入端经电阻R2接地,经电阻R1接电源,芯片IC2的输出端接芯片IC1的P1.0端口,锂电池的正极经电阻R6接芯片IC3的正输入端,芯片IC3的负输入端经电阻R5接地,芯片IC3的负输入端经电阻R4接电源,芯片IC3的输出端接芯片IC1的P1.1端口,锂电池的负极经电阻R8接芯片IC4的负输入端,芯片IC4的负输入端经电阻R7接电源,芯片IC4的正输入端分别经电阻R12和电阻R14接电源和接地,芯片IC4的正输入端口经电阻R9接电路输入端,芯片IC4的正输入端口同时接芯片IC5的正负输入端,芯片IC5的输出端接芯片IC1的P3.3端口,芯片IC1的P1.5端口经电阻R17接晶体管Q4的基极,晶体管Q4的发射极接地,晶体管Q4的集电极接晶体管Q1的发射极,晶体管Q1的集电极经二极管D1接发射极,晶体管Q4的集电极经二极管D4接发射极,晶体管Q1的集电极接晶体管Q2的集电极,同时晶体管Q1的集电极分别经电容C4和电容C5接地 ...
【技术特征摘要】
1.一种充电宝,其特征在于,充电宝内置充电保护电路,电路中锂电池的正极接电路输出端,锂电池正极接芯片IC2的负输入端,芯片IC2的负输入端经电阻R3接地,芯片IC2的正输入端经电阻R2接地,经电阻R1接电源,芯片IC2的输出端接芯片IC1的P1.0端口,锂电池的正极经电阻R6接芯片IC3的正输入端,芯片IC3的负输入端经电阻R5接地,芯片IC3的负输入端经电阻R4接电源,芯片IC3的输出端接芯片IC1的P1.1端口,锂电池的负极经电阻R8接芯片IC4的负输入端,芯片IC4的负输入端经电阻R7接电源,芯片IC4的正输入端分别经电阻R12和电阻R14接电源和接地,芯片IC4的正输入端口经电阻R9接电路输入端,芯片IC4的正输入端口同时接芯片IC5的正负输入端,芯片IC5的输出端接芯片IC1的P3.3端口,芯片IC1的P1.5端口经电阻R17接晶体管Q4的基极,晶体管Q4的发射极接地,晶体管Q4的集电极接晶体管Q1的发射极,晶体管Q1的集电极经二极管D1接发射极,晶体管Q4的集电...
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