CN207691469U

CN207691469U - A kind of mobile power that do not discharge that charges

Info

Publication number: CN207691469U
Application number: CN201721660193.9U
Authority: CN
Inventors: 叶小德
Original assignee: Xiamen Xinyuan Electronic Technology Co Ltd
Current assignee: Xiamen Xinyuan Electronic Technology Co Ltd
Priority date: 2017-12-04
Filing date: 2017-12-04
Publication date: 2018-08-03
Anticipated expiration: 2027-12-04

Abstract

The utility model is related to a kind of mobile powers that do not discharge that charges, including charging circuit, output control circuit and turn circuit for lamp, the input terminal of the charging circuit turns circuit for lamp described in being provided with, and the output end of the charging circuit is connect with the input terminal of the output control circuit.For the utility model by turning circuit for lamp, state when user being made to be clear how power source charges improves usage safety performance of the client to core source mobile power, reduces client's machine product cost.This product can be widely applied to massager, and the stand-by power supply of the Related products such as hand-hold mobile digital equipment is simple in structure, securely and reliably.

Description

A kind of mobile power that do not discharge that charges

Technical field

The utility model is related to a kind of charging circuit more particularly to a kind of mobile powers that do not discharge that charges.

Background technology

As the improvement of people's living standards, the prevention of health is increasingly paid attention to, and due to working principle, lead to waist Or the crowd of cervical vertebra strain is also more and more；Thus people begin look for a kind of economy and Domestic health-care physical therapy easy to use is set Standby, to alleviate the sense of discomfort of body, thus Domestic massage electric appliance also comes into being, and massage massage apparatus currently on the market is all It needs to connect alternating current, inconvenient for use, user experience is bad；In order to improve such case, mating portable more piece lithium electromigration Dynamic power supply is also done something for the occasion and is given birth to.Since the design specification of different product is different, the demand to power supply is also different, therefore the type of power supply Also various, multisection lithium battery charging IC currently on the market is largely import, and buying is inconvenient, expensive, leads to product Cost increase, volume production are difficult；Such Product Safety requires relatively high simultaneously, thus the verification of product circuit be also required to it is considerably long Time, that is, improve the development cost of product, be also unfavorable for the quick listing of massager production firm product.

Utility model content

The purpose of this utility model is that solve the above-mentioned problems and provides a kind of mobile power that do not discharge that charges.

The utility model is achieved through the following technical solutions above-mentioned purpose：

The utility model includes charging circuit, output control circuit and turns circuit for lamp, and the input terminal of the charging circuit is set Turn circuit for lamp described in being equipped with, the output end of the charging circuit is connect with the input terminal of the output control circuit, described to turn lamp Circuit includes the 14th resistance, the 15th resistance, the 21st resistance, the 34th resistance, the 35th resistance, the 36th Resistance, the 37th resistance, dichromatism common anode turn lamp LED, the 5th a reference source IC, the 6th a reference source IC and the 11st capacitance, described The first end of 35th resistance, the 36th resistance and the 14th resistance is connect with charging input end respectively, and the described 30th The second end of the five resistance first end with the reference pole and anode and the 21st resistance of the 5th a reference source IC respectively Connection, the second end of the 21st resistance respectively with the first end of the 37th resistance and the 34th resistance the The reference pole connection of one end, the 11st capacitance first end, the 6th a reference source IC, the plus earth of the 6th a reference source IC, institute The second end ground connection of the anode of the 5th a reference source IC, the second end of the 37th resistance and the 34th resistance is stated, it is described Second end after 36th resistance and the 14th resistor coupled in parallel turns the anode and the tenth of lamp LED with the dichromatism common anode The first end of five resistance connects, and the cathode terminal for the green LED cathode and the first zener diode that the dichromatism common anode turns lamp LED connects It connects, the anode tap ground connection of first zener diode, the dichromatism common anode turns the red LED cathode and the 15th electricity of lamp LED Resistance second end is connected with the cathode of the second end of the 11st capacitance and the 6th a reference source IC.

Specifically, it is provided with lithium battery protection circuit on the charging circuit.

The beneficial effects of the utility model are：

For the utility model by turning circuit for lamp, state when user being made to be clear how power source charges improves client to core The usage safety performance of source mobile power reduces client's machine product cost.This product can be widely applied to massager or hand The stand-by power supply of the Related products such as mobile digital equipment is held, it is simple in structure, securely and reliably.

Description of the drawings

Fig. 1 is the circuit diagram of the utility model；

In figure：1- turns circuit for lamp, 2- charging circuits, 3- output control circuits, 4- lithium battery protection circuits.

Specific implementation mode

The utility model is described in further detail below in conjunction with the accompanying drawings：

As shown in Figure 1, the utility model includes charging circuit 2, output control circuit 3 and turns circuit for lamp 1, the charging is electric The input terminal on road 2 turns circuit for lamp 1, the input of the output end of the charging circuit 2 and the output control circuit 3 described in being provided with End connection, the circuit for lamp that turns includes the 14th resistance R14, the 15th resistance R15, the 21st resistance R21, the 34th electricity Resistance R34, the 35th resistance R35, the 36th resistance R36, the 37th resistance R37, turn lamp diode (LED) 1, the 5th benchmark Source IC U5, the 6th a reference source IC U6 and the 11st capacitance C11, the 35th resistance R35, the 36th resistance R36 and The first end of 14th resistance R14 is connect with charging input end J1 respectively, the second end of the 35th resistance R35 respectively with The reference pole of the 5th a reference source IC U5 and cathode are connected with the first end of the 21st resistance R21, and the described 20th The second end of one resistance R21 respectively with the first end of the first end of the 37th resistance R37 and the 34th resistance R34, The collector of 6th a reference source IC U6 connects, the plus earth of the 6th a reference source IC U6, the 5th a reference source IC U5 Reference pole, the 37th resistance R37 second end and the 34th resistance R34 second end ground connection, the described 30th Turn the of lamp LED1 with the dichromatism common anode after the second end of six resistance R36 and the series connection of the second end of the 14th resistance R14 One end connects, and the second end that the dichromatism common anode turns lamp LED1 is connect with the cathode terminal of zener diode ZD1, two pole of the voltage stabilizing The anode tap of pipe ZD1 is grounded, and the dichromatism common anode turns the red LED cathode and the 15th resistance second end and the 11st of lamp LED The cathode of the second end of capacitance and the 6th a reference source IC are connected.

Lithium battery protection circuit 4 is provided on the charging circuit 2, lithium battery protection circuit uses the special 7.4V lithiums of import Electric protection IC R5460N212AF control IO by charging and discharging, and control respectively is charged and discharged conducting and the pass of metal-oxide-semiconductor It is disconnected, realize the charging overvoltage of battery, charge and discharge overcurrent, Cross prevention function.

Charging circuit 2 can be easy to filling for limitation battery using the high-voltage charging IC XL4201 with constant current constant voltage function Piezoelectric voltage avoids over-charging of battery；Its constant current function is utilized simultaneously, is limited the maximum charge battery of battery, can pacified using battery It charges under full charging current, protects the charging safety of battery.

Turn circuit for lamp 1 and use high-precision a reference source IC TL431, by detecting the size of charging current, judges battery State of charge makes to turn lamp more accurate.When charging current is more than setting value, when red shows battery in charged state；When filling When electric current is less than setting value, green light shows that battery has been filled with electricity, and the 5th a reference source IC U5 generate a 2.495V benchmark Voltage, by the 21st resistance R21, the 34th resistance R34 gives the 6th a reference source after the partial pressure of the 37th resistance R37 IC U6 are as reference voltage, and the 6th a reference source IC U6 are by the pressure drop of the 17th resistance R17 of detection resistance, when the 17th electricity When hindering R17 pressure drops more than reference voltage, the cathode of the 6th a reference source IC U6 is connected with anode, and red LED is bright, and dichromatism is total at this time The anode voltage that sun turns lamp LED is limited in 2.0V hereinafter, the cathode of green LED is because 3.6V zener diodes ZD1's deposits It is being off state；When the 17th resistance R17 pressure drops are less than reference voltage, cathode, the anode of the 6th a reference source IC U6 Cut-off, dichromatism common anode turn the red LED cathode voltage of lamp LED close to anode voltage, and red LED is gone out；Dichromatism common anode turns lamp at this time The anode voltage of LED is higher than the sum of the conducting voltage of LED and zener diode ZD1, and dichromatism common anode turns the green LED of lamp LED It is bright, indicate that charging terminates.

When user, which accesses DC power supply, to charge to this mobile product, output control circuit 3 passes through the 40th electricity of resistance Resistance R40 carries a high level signal to the 4th foot of third power switch IC (M3), and second source switch M2 is made to turn off, and cut-out is put Electrical circuit limits this mobile power and externally discharges, and ensures mobile power product in charging, user can not use, and improve production The usage safety performance of product, after user pulls out DC, the 4th feet of second source switch M2 are dragged down by the 41st resistance R41, electricity Source switch IC restores conducting, opens discharge loop, the external regular picture of product；It is special using the low internal resistance of power switch IC simultaneously Property, loss and calorific value of the product in external electric discharge are reduced, discharging efficiency and the service life of battery are improved, DC chargings can be reduced The output power of power supply reduces the cost of DC charge power supplies, reduces the purchase cost of client.

The above is only the preferred embodiments of the present utility model only, is not intended to limit the utility model, all in this practicality All any modification, equivalent and improvement etc., should be included in the guarantor of the utility model made by within novel spirit and principle It protects in range.

Claims

The mobile power 1. a kind of charging is not discharged, it is characterised in that：Including charging circuit, output control circuit and turn circuit for lamp, The input terminal of the charging circuit turns circuit for lamp, the output end of the charging circuit and the output control circuit described in being provided with Input terminal connection, it is described turn circuit for lamp include the 14th resistance, the 15th resistance, the 21st resistance, the 34th resistance, 35th resistance, the 36th resistance, the 37th resistance, dichromatism common anode turn lamp LED, the 5th a reference source IC, the 6th benchmark Source IC and the 11st capacitance, the first end of the 35th resistance, the 36th resistance and the 14th resistance respectively with charging Input terminal connects, the second end of the 35th resistance respectively with the reference pole of the 5th a reference source IC and anode and described The first end of 21st resistance connects, the second end of the 21st resistance respectively with the 37th resistance first End is connected with the reference pole of the first end of the 34th resistance, the 11st capacitance first end, the 6th a reference source IC, the 6th base The plus earth of quasi- source IC, the anode of the 5th a reference source IC, the second end of the 37th resistance and the 34th electricity The second end of resistance is grounded, and the second end after the 36th resistance and the 14th resistor coupled in parallel turns with the dichromatism common anode The first end of the anode of lamp LED and the 15th resistance connects, and the dichromatism common anode turns the green LED cathode and first of lamp LED surely The cathode terminal connection of diode, the anode tap ground connection of first zener diode, the dichromatism common anode is pressed to turn the red of lamp LED LED cathode is connected with the 15th resistance second end and the second end of the 11st capacitance and the cathode of the 6th a reference source IC.
The mobile power 2. a kind of charging according to claim 1 is not discharged, it is characterised in that：It is arranged on the charging circuit There is lithium battery protection circuit.