CN216649333U

CN216649333U - Disconnected management circuit that fills of wireless portable power source

Info

Publication number: CN216649333U
Application number: CN202123426521.8U
Authority: CN
Inventors: 李明毅; 朱已彪
Original assignee: Huachuangxinke Shenzhen Industrial Co ltd
Current assignee: Huachuangxinke Shenzhen Industrial Co ltd
Priority date: 2021-12-31
Filing date: 2021-12-31
Publication date: 2022-05-31
Anticipated expiration: 2031-12-31

Abstract

The utility model relates to the field of wireless charging, in particular to a wireless mobile power supply charging interruption management circuit. The circuit comprises a mobile power supply assembly, a wireless charging assembly, an input/output interface, an indicator, a detection resistor RS, a charging core BATTERY, the input/output interface, the indicator is respectively connected with the mobile power supply assembly, the mobile power supply assembly is connected with the charging core BATTERY, the detection resistor RS is respectively connected with a V + end and a wireless charging assembly of the mobile power supply assembly, the circuit further comprises a disconnected charging control module for preventing the wireless charging power supply from entering an automatic dormancy state, the disconnected charging control module is an isolation control module or a direct control module, one end of the disconnected charging control module is connected with a SW _ EN signal end of the wireless charging assembly, and the other end of the disconnected charging control module is connected with a KEY end of the mobile power supply assembly. The circuit ensures that the mobile power supply can still keep a charging state after the charging of the mobile terminal reaches 80%, ensures that the charging reaches 100%, and solves the problem of charging interruption.

Description

Disconnected management circuit that fills of wireless portable power source

Technical Field

The utility model relates to the field of wireless charging, in particular to a wireless mobile power supply charging interruption management circuit.

Background

When a mobile phone (such as an IPHONE mobile phone) is wirelessly charged by 80%, the mobile phone is lightly loaded for charging due to overhigh temperature, only a small current is maintained for standby use, and when the current is smaller than a certain value (such as 100 mA), the wireless charging treasure can be automatically shut down and dormant, so that the mobile phone is disconnected for charging, and the charging cannot reach 100%.

Most wireless treasured that charges is charging 80% for the cell-phone (like IPHONE cell-phone) wireless, and the cell-phone high temperature can be lightly loaded when 80% and charge, and it is very little to lead to the precious output current that charges, and the precious automatic dormancy shutdown that charges can appear the cell-phone and open the charging, can't fill 100%, and customer experience is very poor. In order to solve the problem, a dummy load is added to some products, so that the wireless charger does not enter automatic sleep, but the dummy load occupies space, the temperature is high, and the cost is increased.

SUMMERY OF THE UTILITY MODEL

The utility model provides a wireless mobile power supply charging interruption management circuit, and aims to solve the problem that charging interruption occurs in the charging process of the conventional wireless charger.

The utility model provides a wireless mobile power supply disconnection and charging management circuit which comprises a mobile power supply assembly, a wireless charging assembly, an input/output interface, an indicator, a detection resistor RS and a charging core BATTERY, wherein the input/output interface and the indicator are respectively connected with the mobile power supply assembly, the mobile power supply assembly is connected with the charging core BATTERY, two ends of the detection resistor RS are respectively connected with a V + end of the mobile power supply assembly and the wireless charging assembly, the wireless mobile power supply disconnection and charging management circuit further comprises a disconnection and charging control module used for enabling the wireless charging power supply not to enter an automatic dormancy state, the disconnection and charging control module is an isolation control module or a direct control module, one end of the disconnection and charging control module is connected with a SW _ EN signal end of the wireless charging assembly, and the other end of the disconnection and charging control module is connected with a KEY end of the mobile power supply assembly.

As a further improvement of the present invention, the isolation control module includes an NMOS transistor Q1, a resistor R1, a resistor R2, and a switch SW1, a gate of the NMOS transistor Q1 is respectively connected to the resistor R2 and a SW _ EN signal end of the wireless charging component, a source of the NMOS transistor Q1 is respectively connected to the other end of the resistor R2 and the ground, a drain of the NMOS transistor Q1 is respectively connected to the resistor R1 and the switch SW1, the other end of the resistor R1 is connected to a KEY end of the mobile power supply component, and the other end of the switch SW1 is grounded.

As a further improvement of the present invention, the direct control module includes a resistor R3, a resistor R4, and a switch SW2, one end of the resistor R3 is connected to the KEY end of the portable power source module, the other end of the resistor R3 is connected to the switch SW2 and the resistor R4, the other end of the resistor R4 is connected to the SW _ EN signal end of the wireless charging module, and the other end of the switch SW2 is grounded.

As a further improvement of the present invention, the wireless charging assembly includes a wireless charging control chip and a charging coil L1, the wireless charging control chip is connected to the charging coil L1 and detects the charging information of the mobile terminal through the charging coil L1, the SW _ EN signal terminal of the wireless charging control chip sends out high and low signals at intervals, and the interval time of the SW _ EN signal sending out is less than the interval time of the mobile power supply assembly automatically entering the sleep state.

As a further improvement of the utility model, the indicator comprises a sound indicator, a light indicator and a vibration indicator.

The utility model has the beneficial effects that: the load in the charging circuit is increased through the isolation control module or the direct control module, and the mobile power supply can still keep a charging state after the charging of the mobile terminal reaches 80% through the high-low signals sent out at intervals by the wireless charging assembly, so that the charging is ensured to reach 100%, and the problem of charging disconnection is solved.

Drawings

FIG. 1 is a circuit diagram of a first embodiment of a charging/discharging management circuit of a wireless mobile power supply according to the present invention;

fig. 2 is a circuit diagram of a second embodiment of the wireless mobile power supply charging and discharging management circuit according to the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments.

As shown in fig. 1 to fig. 2, the charging interruption management circuit for a wireless mobile power supply of the present invention includes a mobile power supply assembly, a wireless charging assembly, an input/output interface, an indicator, a detection resistor RS, a charging core BATTERY, and an interruption control module for preventing the wireless charging power supply from entering an automatic sleep state, wherein the input/output interface and the indicator are respectively connected to the mobile power supply assembly, the mobile power supply assembly is connected to the charging core BATTERY, two ends of the detection resistor RS are respectively connected to a V + terminal of the mobile power supply assembly and the wireless charging assembly, the interruption control module is an isolation control module or a direct control module, one end of the interruption control module is connected to a SW _ EN signal terminal of the wireless charging assembly, and the other end of the interruption control module is connected to a KEY terminal of the mobile power supply assembly.

The wireless charging assembly comprises a wireless charging control chip and a charging coil L1, the wireless charging control chip is connected with the charging coil L1 and detects charging information of the mobile terminal through the charging coil L1, a SW _ EN signal end of the wireless charging control chip sends out high and low signals at intervals, and the interval time of the SW _ EN signal is less than the interval time of the mobile power supply assembly automatically entering a dormant state. The high-low signal is sent from the wireless control chip that fills, and the wireless control chip that fills can detect the cell-phone whether charge, information such as charging voltage electric current.

Indicators include audible indicators, light indicators, vibratory indicators, and the like.

As shown in fig. 1, the isolation control module includes an NMOS transistor Q1, a resistor R1, a resistor R2, and a switch SW1, a gate of the NMOS transistor Q1 is respectively connected to the resistor R2 and a SW _ EN signal end of the wireless charging component, a source of the NMOS transistor Q1 is respectively connected to the other end of the resistor R2 and the ground, a drain of the NMOS transistor Q1 is respectively connected to the resistor R1 and the switch SW1, the other end of the resistor R1 is connected to a KEY end of the mobile power supply component, and the other end of the switch SW1 is grounded. The resistor R1 and the resistor R2 play a role in limiting current and are used for protecting the IO port of the main chip of the wireless charging assembly.

As shown in fig. 2, the direct control module includes a resistor R3, a resistor R4, and a switch SW2, one end of the resistor R3 is connected to the KEY end of the portable power source module, the other end of the resistor R3 is connected to the switch SW2 and the resistor R4, the other end of the resistor R4 is connected to the SW _ EN signal end of the wireless charging module, and the other end of the switch SW2 is grounded. The resistor R3 and the resistor R4 play a role in limiting current and are used for protecting the IO port of the main chip of the wireless charging assembly.

Different wireless charging assembly control methods may be different, some wireless charging assemblies are controlled by outputting low level, some are controlled by outputting low level, and correspond to the two modes of the isolation control module and the direct control module respectively, and through increasing loads of the two modules, the wireless charging power supply is continuously kept charged by combining output level control signals without entering a sleep state. Compared with the prior art of connecting dummy load, the isolation control module and the direct control module added in the utility model can reduce power devices, occupy small space, reduce cost and generate less heat.

The working process of the wireless mobile power supply charging interruption management circuit is as follows:

when the mobile phone charger works normally, the switch SW1 or the switch SW2 is pressed, the charger component starts to output power to supply power to the wireless charger component, and the wireless charger power supply charges the mobile phone after detecting the mobile phone through the coil L1 until the mobile phone is charged to 100%; if the working current of the mobile phone is not detected, namely the working current is less than 100mA, after the working current lasts for 20-35S, the charger automatically sleeps and shuts down.

When the wireless charging power supply normally charges the mobile phone, when the temperature of the mobile phone is over high when the wireless charging power supply is charged to 80%, the mobile phone can be charged under light load, the working current is very small, namely less than 100mA, and after the time lasts for 20-35S, the wireless charging power supply automatically sleeps and shuts down. In this case, the mobile phone cannot be charged to 100%, and it is determined that the charging is disconnected.

According to the utility model, through the isolation control module or the direct control module, when the temperature of the mobile phone is overhigh when the temperature is over 80%, the SW _ EN end of the wireless charging control chip sends high and low signals at intervals of time (less than 20-35S), so that the charging power supply cannot be automatically dormant and shut down until the temperature falls back, and the mobile phone is charged again, thereby ensuring that the charging is 100% and realizing the continuous charging of the mobile phone.

The foregoing is a more detailed description of the utility model in connection with specific preferred embodiments and it is not intended that the utility model be limited to these specific details. For those skilled in the art to which the utility model pertains, several simple deductions or substitutions can be made without departing from the spirit of the utility model, and all shall be considered as belonging to the protection scope of the utility model.

Claims

1. The utility model provides a wireless portable power source management circuit that fills absolutely, includes portable power source subassembly, wireless charging assembly, input/output interface, indicator, detection resistance RS, the core BATTERY that charges, portable power source subassembly is connected respectively to input/output interface, indicator, portable power source subassembly connection fills electric core BATTERY, V + end and the wireless charging assembly of portable power source subassembly are connected respectively to detection resistance RS both ends, its characterized in that still fills control module including the absolutely that is used for letting wireless charging source not get into automatic dormancy state, it is isolation control module or direct control module to fill control module absolutely, the SW _ EN signal end of wireless charging assembly is connected to disconnected control module one end that fills, the KEY end of portable power source subassembly is connected to disconnected control module's the other end that fills.

2. The wireless mobile power supply charging and disconnecting management circuit according to claim 1, wherein the isolation control module includes an NMOS transistor Q1, a resistor R1, a resistor R2, and a switch SW1, a gate of the NMOS transistor Q1 is respectively connected to a resistor R2 and a SW _ EN signal terminal of the wireless charging component, a source of the NMOS transistor Q1 is respectively connected to the other end of the resistor R2 and ground, a drain of the NMOS transistor Q1 is respectively connected to the resistor R1 and the switch SW1, the other end of the resistor R1 is connected to a KEY terminal of the mobile power supply component, and the other end of the switch SW1 is grounded.

3. The wireless mobile power supply charging and disconnecting management circuit according to claim 1, wherein the direct control module includes a resistor R3, a resistor R4, and a switch SW2, one end of the resistor R3 is connected to the KEY terminal of the mobile power supply component, the other end of the resistor R3 is connected to the switch SW2 and the resistor R4, the other end of the resistor R4 is connected to the SW _ EN signal terminal of the wireless charging component, and the other end of the switch SW2 is grounded.

4. The wireless mobile power supply disconnection and charging management circuit according to claim 1, wherein the wireless charging assembly comprises a wireless charging control chip and a charging coil L1, the wireless charging control chip is connected to the charging coil L1 and detects charging information of the mobile terminal through the charging coil L1, a SW _ EN signal terminal of the wireless charging control chip sends out high and low signals at intervals, and the interval time of the SW _ EN signal sending out is less than the interval time of the mobile power supply assembly automatically entering the sleep state.

5. The wireless mobile power supply disconnection and charging management circuit of claim 1, wherein the indicator comprises a sound indicator, a light indicator, and a vibration indicator.