CN103701165B - A kind of method activating portable power source and device - Google Patents

Abstract

The invention relates to the field of power supplies, and relates to a method and device for activating a mobile power supply. When the circuit between the DC/DC module and the battery protection circuit in the mobile power supply is disconnected, the main controller detects whether the switch in the automatic activation circuit is pressed; if so, a current is generated in the automatic activation circuit to turn on the DC/DC The circuit between the module and the battery protection; when the circuit between the DC/DC module and the battery protection is turned on, the main controller controls the DC/DC module to start outputting according to the load level detected by the load identification circuit, and the load current detection According to the output of the DC/DC module, the circuit performs AD acquisition on the voltage change of the resistance terminal of the load, and the main controller calculates the current of the load according to the received voltage AD signal, and sends it to the display for display. The invention can activate the mobile power supply only by restarting the switch, adjust the continuous output of the battery to the load according to the magnitude of the load current, and display the current value of the load.

Description

A method and device for activating a mobile power supply

technical field

The invention relates to the field of power sources, specifically, a method and device for activating a mobile power source.

Background technique

With the development of the consumer electronics industry and the improvement of people's living standards, more and more mobile products have emerged and become an indispensable tool for people's social entertainment and work. It is no exaggeration to say that these mobile products have penetrated into our lives. In all aspects of work and so on, their appearance has brought convenience and fun to people, but mobile handheld electronic products are mostly powered by batteries, and at this stage, affected by technology and cost, the capacity of the battery can only maintain the use of the device for a short time , so mobile power came into being.

After a lot of market research combined with customer feedback information, we found that the existing mobile power products on the market have a very serious drawback, that is, when people travel with mobile power, if they use it carelessly (the charging load is too large or short-circuited), it will cause The self-protection of the mobile power supply can only be activated by charging with an external power supply (adapter), otherwise it cannot continue to be used, and the mobile power supply that could have brought convenience has become a burden instead, and it may also cause damage to the user due to the inability to charge the mobile device and affect the itinerary. loss.

Contents of the invention

The technical problem to be solved by the present invention is to provide a mobile power supply, the purpose of which is to automatically exit the power supply protection circuit through switch control without resorting to an external power supply, thereby activating the operation of the mobile power supply.

The technical solution of the present invention to solve the above technical problems is a method for activating a mobile power supply, comprising:

When the circuit between the DC/DC module and the battery protection circuit in the mobile power supply is disconnected, the main controller detects whether the switch in the automatic activation circuit is pressed;

If so, generate a current in the automatic activation circuit to turn on the circuit between the DC/DC module and the battery protection;

When the circuit between the DC/DC module and the battery protection is turned on, the main controller controls the DC/DC module to start output according to the load level detected by the load identification circuit, and the load current detection circuit detects the load level according to the DC/DC module. The output performs AD acquisition on the voltage change of the resistance terminal of the load, and the main controller calculates the current of the load according to the received voltage AD signal, and sends it to the display screen for display.

On the basis of the above technical solutions, the present invention can also be improved as follows.

Further, before the circuit between the DC/DC module and the battery protection in the mobile power supply is disconnected, it includes:

The main controller controls the battery to discharge the external load, and the electronic protection circuit detects whether the battery discharge is abnormal. If not, the main controller continues to control the battery discharge. If yes, the main controller prohibits the battery from discharging to the outside, so that The circuit between the DC/DC module and the battery protection is disconnected.

Further, the automatic activation circuit includes at least one diode, at least one capacitor, at least one resistor, at least one switch, and at least one battery protection IC. When the main controller detects that the switch in the automatic activation circuit is pressed, the main controller according to Immediately after the switch is turned on, the negative pole of the battery and the negative pole of the entire circuit system are short-circuited instantaneously, and the characteristics of unidirectional conduction of the diode and the inability to change the capacitance can be used to activate the battery protection IC, thereby activating the DC/DC module and the battery protection circuit. circuit.

Further, the main controller calculates the current of the load according to the received voltage AD signal, and sends the display to the display screen, as detailed below:

When the circuit between the DC/DC module and the battery protection is turned on, the main controller detects that a load is inserted, and the load identification circuit sends an electrical signal to the main controller according to the level of the load, and the main controller according to the load The level controls the DC/DC module to start outputting, and the load current detection circuit performs real-time AD collection on the resistance of the load according to the output received from the DC/DC module, and sends the collected AD signal to the main controller, and the main controller Calculate the current required by the load according to the collected AD signal, and send and display the current to the display.

Another object of the embodiments of the present invention is to provide an activatable mobile power supply, which includes a battery protection circuit, a main controller, a DC/DC module, a battery, an automatic activation circuit, a load current detection circuit, a load identification circuit, a load , display screen, is characterized in that,

The input terminals of the battery protection circuit are respectively connected to the automatic activation circuit and the battery, and the battery protection circuit is used to detect whether the battery is abnormally discharged to the external load;

The output end of the battery protection circuit is connected to the DC/DC module, the input end and the output end of the DC/DC module are respectively connected to the main controller and the load current detection circuit, and the DC/DC module is used to Provide voltage to the load current detection circuit;

The load current detection circuit is connected to the load identification circuit, and the load current detection circuit is used to receive the voltage output by the DC/DC module to perform real-time AD acquisition on the resistance in the load, and send the collected AD signal to the load identification circuit through the load identification circuit. main controller;

Both ends of the load identification circuit are respectively connected to the load and the main controller, and the load identification circuit is used to send the generated electrical signal to the main controller according to the level of the load and provide the load with a voltage access source;

The main controller is connected to the display screen, and the main controller is used for controlling the discharge voltage of the DC/DC module and calculating the received load current, and sending it to the display screen for display.

Further, the automatic activation circuit includes at least one diode, at least one capacitor, at least one resistor, at least one switch, and at least one battery protection IC, and the automatic activation circuit is respectively connected with the battery protection circuit, the battery and the main controller, so The battery is connected to the main controller through the switch in the automatic activation circuit, the battery protection circuit is connected to the main controller through the automatic activation circuit, and the automatic activation circuit is used to activate the battery protection IC And turn on the circuit between the DC/DC module and the battery protection circuit.

Further, the mobile power supply also includes:

The main controller is connected to the charging management module, the output terminal of the charging management module is connected to the battery through the battery protection circuit, and the charging management module is used to charge the battery according to the signal received from the main controller;

The battery protection circuit is connected to the charging management module at the input end, and the battery protection circuit is connected to the DC/DC module at the output end, which is used for storing electric energy or receiving a signal received from the charging management module. The DC/DC module signal is discharged to the external load;

The input end of the display screen is connected to the main controller, which is used to display the magnitude of the load current sent by the main controller according to the received;

The load is connected with a load identification circuit, which is used for receiving battery discharge and providing the level of its own level to the load identification circuit.

Further, the DC/DC module includes at least one oscillator and chopper module, the load identification circuit is composed of at least one MOS transistor, at least one resistor, and at least one capacitor, and the load current detection circuit is composed of at least one resistor , the display circuit is composed of LED or LCD material, and the load is at least one type of any mobile terminal.

The beneficial effects of the present invention are: a new automatic activation circuit is added in the circuit structure, which overcomes the problem of battery protection IC and MOS tube caused by improper use (overvoltage or overcurrent) in the traditional mobile power supply, which makes the battery and the circuit If the latter system is disconnected and needs to be activated by external charging, the invention only needs to restart the switch to activate the mobile power supply. And a new current detection circuit is added to adjust the continuous output of the battery to the load according to the magnitude of the load current, and display the current value of the load and the remaining capacity.

Description of drawings

Fig. 1 is the flow chart of the method for activating mobile power supply of the present invention;

Fig. 2 is a schematic structural frame diagram of the mobile power supply of the present invention;

Fig. 3 is a frame diagram of the automatic activation circuit of the mobile power supply of the present invention.

detailed description

The principles and features of the present invention are described below in conjunction with the accompanying drawings, and the examples given are only used to explain the present invention, and are not intended to limit the scope of the present invention.

As shown in FIG. 1 , it is a flowchart of a method for activating a mobile power supply in the present invention. The details are as follows:

When the circuit between the DC/DC module and the battery protection circuit in the mobile power supply is disconnected, the main controller detects whether the switch in the automatic activation circuit is pressed;

If so, generate a current in the automatic activation circuit to turn on the circuit between the DC/DC module and the battery protection;

When the circuit between the DC/DC module and the battery protection is turned on, the main controller controls the DC/DC module to start output according to the load level detected by the load identification circuit, and the load current detection circuit detects the load level according to the DC/DC module. The output performs AD acquisition on the voltage change of the resistance terminal of the load, and the main controller calculates the current of the load according to the received voltage AD signal, and sends it to the display screen for display.

In this example, before the circuit between the DC/DC module and the battery protection in the mobile power supply is disconnected, it includes:

The main controller controls the battery to discharge the external load, and the electronic protection circuit detects whether the battery discharge is abnormal. If not, the main controller continues to control the battery discharge. If yes, the main controller prohibits the battery from discharging to the outside, so that The circuit between the DC/DC module and the battery protection is disconnected.

Further, the automatic activation circuit includes at least one diode, at least one capacitor, at least one resistor, at least one switch, and at least one battery protection IC. When the main controller detects that the switch in the automatic activation circuit is pressed, the main controller according to Immediately after the switch is turned on, the negative pole of the battery and the negative pole of the entire circuit system are short-circuited instantaneously, and the battery protection IC is activated by using the characteristics of the unidirectional conduction of the diode and the inability to break through the capacitance, thereby conducting the connection between the DC/DC module and the battery protection circuit. circuit.

Further, the main controller calculates the current of the load according to the received voltage AD signal, and sends the display to the display screen, as detailed below:

When the circuit between the DC/DC module and the battery protection is turned on, the main controller detects that a load is inserted, and the load identification circuit sends an electrical signal to the main controller according to the level of the load, and the main controller according to the load The level controls the DC/DC module to start outputting, and the load current detection circuit performs real-time AD collection on the resistance of the load according to the output received from the DC/DC module, and sends the collected AD signal to the main controller, and the main controller Calculate the current required by the load according to the collected AD signal, and send and display the current to the display.

As shown in Figure 2, the schematic structural frame diagram of the mobile power supply of the present invention is described in detail as follows:

It includes a battery protection circuit, a main controller, a DC/DC module, a battery, an automatic activation circuit, a load current detection circuit, a load identification circuit, a load, and a display screen. It is characterized in that,

The input terminals of the battery protection circuit are respectively connected to the automatic activation circuit and the battery, and the battery protection circuit is used to detect whether the battery is abnormally discharged to the external load;

In this example, when the battery protection circuit detects an abnormal discharge, where the abnormal discharge includes voltage, current, too large and too small, it sends a relevant electrical signal to the main controller, and the main controller responds according to the received electrical signal The DC/DC module is controlled, and a power generation signal and a discharge prohibition signal are sent to the DC/DC module.

The output end of the battery protection circuit is connected to the DC/DC module, the input end and the output end of the DC/DC module are respectively connected to the main controller and the load current detection circuit, and the DC/DC module is used to Provide voltage to the load current detection circuit;

In this example, the DC/DC module is preferably dual-channel, and the DC/DC module mainly boosts and lowers the voltage of the battery. When the connected load voltage is too low or too high, as long as the DC/DC module meets the The 5-16V range is available.

The load current detection circuit is connected to the load identification circuit, and the load current detection circuit is used to receive the voltage output by the DC/DC module to perform real-time AD acquisition on the resistance in the load, and send the collected AD signal to the load identification circuit through the load identification circuit. main controller;

In this example, the load current detection circuit generally connects a resistor with a small resistance in series at one end of the resistor, and the voltage at both ends of the resistor is taken as long as the current flowing through the load in the series circuit is equal to the current at both ends of the sampled resistor. The voltage across the resistor can determine the load current.

Both ends of the load identification circuit are respectively connected to the load and the main controller, and the load identification circuit is used to send the generated electrical signal to the main controller according to the level of the load and provide the load with a voltage access source;

In this example, the load identification circuit, for identification of the circuit, first samples, converts the current into a voltage through a small resistor (generally 0.1) connected in series, and then amplifies the voltage and sends it to the main controller.

The main controller is connected to the display screen, and the main controller is used for controlling the discharge voltage of the DC/DC module and calculating the received load current, and sending it to the display screen for display.

In this example, the main control is preferably an MCU controller type, and the MCU controller is more conducive to calculating the AD voltage signal of the load resistor in terms of storage structure and bus structure.

Further, the automatic activation circuit includes at least one diode, at least one capacitor, at least one resistor, at least one switch, and at least one battery protection IC, and the automatic activation circuit is respectively connected with the battery protection circuit, the battery and the main controller, so The battery is connected to the main controller through the switch in the automatic activation circuit, the battery protection circuit is connected to the main controller through the automatic activation circuit, and the automatic activation circuit is used to activate the battery protection IC And turn on the circuit between the DC/DC module and the battery protection circuit.

The mobile power supply also includes:

The main controller is connected to the charging management module, the output terminal of the charging management module is connected to the battery through the battery protection circuit, and the charging management module is used to charge the battery according to the signal received from the main controller;

The battery is connected to the charging management module and the DC/DC module at the input end and the output end respectively, which are used to store electric energy or discharge the external load according to the signal received from the charging management module or receive the signal from the DC/DC module;

The input end of the display screen is connected to the main controller, which is used to display the magnitude of the load current sent by the main controller according to the received;

The load is connected with a load identification circuit, which is used for receiving battery discharge and providing the level of its own level to the load identification circuit.

Further, the DC/DC module includes at least one oscillator and chopper module, the load identification circuit is composed of at least one MOS transistor, at least one resistor, and at least one capacitor, and the load current detection circuit is composed of at least one resistor , the display circuit is composed of LED or LCD material, and the load is at least one type of any mobile terminal.

In this example, the load is at least one type of any mobile terminal, wherein the mobile terminal includes MP3, MP4, PSP, mobile phone, tablet computer, camera, smart glasses, smart watch, smart wristband and so on.

As shown in Figure 3, it is a frame diagram of the automatic activation circuit of the mobile power supply of the present invention, which is described in detail as follows:

The automatic activation circuit includes at least one MOS transistor, at least one capacitor, at least one inductor, and at least one switch, and the automatic activation circuit is respectively connected with the battery protection circuit, the battery and the main controller, and the battery is automatically activated through the automatic activation circuit. A switch in the circuit is connected with the main controller, and the battery protection circuit is connected with the main controller through the automatic activation circuit.

In this example, preferably, the diode only needs voltage to be turned on, and does not need current. When the switch is turned off, the negative pole of the battery and the negative pole of the entire circuit system are short-circuited instantaneously, using the characteristics of unidirectional conduction and capacitance that cannot be broken through by the diode. , to activate the battery protection IC, thereby turning on the circuit between the DC/DC module and the battery protection circuit.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection of the present invention. within range.

Claims (7)

1. a portable power source, it includes battery protecting circuit, master controller, DC/DC module, battery, automatic active circuit, load current detection circuit, remained capacity circuit, load, display screen, it is characterised in that

The input of battery protecting circuit connects automatic active circuit and battery respectively, and described battery protecting circuit is used for detecting whether battery exists electric discharge extremely to load；

The outfan of described battery protecting circuit connects DC/DC module; the input of described DC/DC module is connected with master controller; the outfan of described DC/DC module is connected with load current detection circuit, and described DC/DC module is for providing voltage according to the discharge signal received to load current detection circuit；

Described load current detection circuit connects remained capacity circuit, described load current detection circuit carries out real-time AD collection for the resistance in the voltage against load according to the DC/DC module output received, and through remained capacity circuit, collection AD signal is sent to master controller；

One end of described remained capacity circuit is connected to load, the other end of described remained capacity circuit is connected with master controller, and described remained capacity circuit is used for the height according to load level and the signal of telecommunication of generation is sent to master controller and provides voltage to access source to load；

Described master controller is connected to display screen, and described master controller is for controlling DC/DC module discharge voltage and calculating the load current that receives, and is sent to display screen and shows；

Described automatic active circuit includes at least one diode, at least one electric capacity, at least one resistance, at least one switch, at least one battery protection ic; described automatic active circuit is connected with battery protecting circuit, battery and master controller respectively; described battery is connected with described master controller by the switch in described automatic active circuit; described battery protecting circuit is connected with described master controller by described automatic active circuit, and described automatic active circuit is for activated batteries protection IC and turns on the circuit between DC/DC module and battery protecting circuit.

2. a kind of portable power source according to claim 1, it is characterised in that described portable power source also includes:

Described master controller is connected to charge management module, and the outfan of described charge management module is connected to battery by battery protecting circuit, and described charge management module is for being charged battery according to the master controller signal received；

Described battery protecting circuit is connected with charge management module at input; described battery protecting circuit is connected with DC/DC module at outfan, and it is for being that the signal of charge management module then carries out electric energy storage or receives DC/DC module by signal to load discharge according to receiving；

The input of described display screen is connected to master controller, and it is for showing according to the load current size that the master controller received sends；

Described load is connected to remained capacity circuit, and it is for receiving battery discharge and the height to the remained capacity level of circuit offer own.

3. according to the arbitrary described a kind of portable power source of claim 1 or 2, it is characterized in that, described DC/DC module includes at least an agitator and a copped wave module, described remained capacity circuit is made up of at least one metal-oxide-semiconductor, at least one resistance, at least one electric capacity, described load current detection circuit is made up of at least one resistance, described display screen is LED or LCD material composition, and described load is the one of at least any mobile terminal.

4. the method activating portable power source, uses the portable power source described in claim 1, it is characterised in that including:

When in portable power source, circuit between DC/DC module and battery protecting circuit disconnects, whether the switch that master controller detects in automatic active circuit is pressed；

If so, in described automatic active circuit, generate electric current, turn on the circuit between described DC/DC module and battery protecting circuit；

During circuit turn-on between described DC/DC module and battery protecting circuit; master controller controls DC/DC module start output according to remained capacity electric circuit inspection to load level height; the change in voltage of the resistance terminal of load is carried out AD collection according to the output of DC/DC module by load current detection circuit; described master controller is according to the electric current of voltage AD signal computational load received, and sends and be shown to display screen.

5. a kind of method activating portable power source according to claim 4, it is characterised in that before when circuit between DC/DC module and battery protecting circuit disconnects in portable power source, including:

Described main controller controls battery is to load discharge, and described battery protecting circuit detects whether described battery discharges exception, if not; then master controller continues to control battery discharge; if it is, master controller forbids that battery externally discharges, the circuit between DC/DC module and battery protecting circuit is made to disconnect.

6. a kind of method activating portable power source according to claim 4, it is characterised in that generating electric current in described automatic active circuit, the circuit turned between described DC/DC module and battery protecting circuit includes:

Described automatic active circuit comprises at least one diode, at least one electric capacity, at least one resistance, at least one switch, at least one battery protection ic；The switch detected in automatic active circuit when master controller is pressed; there is moment short circuit according to moment battery cathode after described switch conduction and whole Circuits System negative pole in described master controller; utilize the characteristic that diode unilateal conduction and electric capacity can not suddenly change; activated batteries protection IC, thus the circuit turned between DC/DC module and battery protecting circuit.

7. a kind of method activating portable power source according to claim 4, it is characterised in that described master controller is according to the electric current of voltage AD signal computational load received, and sends and be shown to display screen, and details are as follows:

During circuit turn-on between described DC/DC module and battery protecting circuit, master controller has detected that load is inserted, remained capacity circuit sends the signal of telecommunication to master controller according to the height of load level, described master controller controls DC/DC module according to the height of load level and starts output, the change in voltage of the resistance terminal of load is carried out real-time AD collection according to the output receiving DC/DC module by load current detection circuit, and collection AD signal is sent to master controller, described master controller is according to the size of current gathered needed for AD signal computational load, and size of current transmission is shown to display screen.