Mobile power circuit and mobile power

Abstract

The present invention relates to a mobile power supply circuit and a mobile power supply, comprising a power discharge module, a device interaction module, and a power stabilization module. The device interaction module establishes communication interaction with a mobile device to be charged and issues a power stabilization signal based on the device information of the mobile device to be charged. Furthermore, upon receiving the power stabilization signal based on the device information of the mobile device to be charged, the power stabilization module stabilizes the discharge of the power discharge module while the power discharge module is charging the mobile device to be charged, thereby preventing damage to the mobile device or the mobile power supply circuit due to excessive discharge. Based on this, by interacting with the mobile device to be charged, extreme operating conditions caused by charging some of the mobile devices to be charged can be avoided, thereby improving the safety of the mobile power supply.

Description

Technical Field

[0001] The present invention relates to the technical field of electronic circuits, and in particular to a mobile power supply circuit and a mobile power supply. Background Art

[0002] A mobile power bank, also known as a portable power bank or mobile charger, is a portable charger that stores electrical energy and is used to charge consumer electronics such as handheld mobile devices. A mobile power bank typically consists of a battery to store electrical energy, a logic stabilization unit to stabilize the output voltage, and a charging circuit to recharge the battery.

[0003] With the advancement of mobile device technology, a wide variety of mobile devices are emerging. Different mobile devices have varying charging parameter requirements, such as charging voltage and current. Therefore, the logic stabilization unit in power banks needs to be designed with compromises to accommodate these diverse mobile devices. However, this compromise means that power banks must withstand extreme operating conditions for some mobile devices, placing significant pressure on their protection design and introducing risks such as over-discharge or short-circuiting.

[0004] In summary, it can be seen that traditional mobile power supplies still have the above defects. Summary of the Invention

[0005] Based on this, it is necessary to provide a mobile power circuit and a mobile power supply to address the defects that still exist in traditional mobile power supplies.

[0006] A mobile power supply circuit, comprising:

[0007] A power discharging module is used to charge the mobile device to be charged;

[0008] The device interaction module is used to establish communication interaction with the mobile device to be charged and send a power stabilization signal according to the device information of the mobile device to be charged;

[0009] The power stabilization module is used to start working when receiving a power stabilization signal; and stabilize the discharge of the power discharge module after starting working.

[0010] The aforementioned mobile power supply circuit includes a power discharge module, a device interaction module, and a power stabilization module. The device interaction module establishes communication with the mobile device to be charged and issues a power stabilization signal based on the device information of the mobile device to be charged. Furthermore, upon receiving the power stabilization signal based on the device information of the mobile device to be charged, the power stabilization module stabilizes the discharge of the power discharge module while the power discharge module is charging the mobile device, preventing excessive discharge from damaging the mobile device or the mobile power supply circuit itself. Thus, by interacting with the mobile device to be charged, the extreme operating conditions caused by charging some of the mobile devices to be charged can be avoided, thereby improving the safety of the mobile power supply.

[0011] In one embodiment, the device interaction module includes a wireless communication unit and an information processing unit;

[0012] The wireless communication unit is used to establish wireless communication with the mobile device to be charged;

[0013] The information processing unit is used to obtain device information of the mobile device to be charged through wireless communication, and send a power stabilization signal according to the device information of the mobile device to be charged.

[0014] In one embodiment, the information processing unit is used to match the device information of the mobile device to be charged with preset information, and to send a power stabilization signal when the matching fails.

[0015] In one embodiment, the wireless communication unit includes a Bluetooth communication unit; and the information processing unit includes a digital signal processor.

[0016] In one embodiment, the power stabilization module includes a logic comparison unit, a logic switch unit, a logic stabilization unit, and a logic stabilization switch;

[0017] The electrical input end of the logic switch unit is connected to the electrical output end of the power discharge module through the logic stabilization switch; the electrical output end of the logic switch unit is connected to the first control end of the logic stabilization unit and is used to connect to the first end of the mobile device to be charged; wherein the logic stabilization switch is used to turn on when receiving the power stabilization signal;

[0018] The logic comparison unit is respectively connected to the electrical input terminal of the logic switch unit, the logic control terminal of the logic switch unit, the logic control terminal of the logic stabilization unit, and the second control terminal of the logic stabilization unit, and is used to respectively connect to the electrical output terminal and the electrical input terminal of the power discharge module; the second control terminal of the logic stabilization unit is used to connect to the second terminal of the mobile device to be charged;

[0019] The logic comparison unit is used to control the logic switch unit to turn on when the discharge is greater than or equal to a preset discharge threshold after the power supply discharge module discharges; after the discharge is completed, when the discharge is less than the preset discharge threshold, the logic switch unit is controlled to turn off, and the first control terminal and the second control terminal of the logic stabilization unit are controlled to turn on to discharge the voltage of the mobile device to be charged.

[0020] In one embodiment, the logic stable switch comprises a relay;

[0021] The electrical input terminal of the logic switch unit is connected to the electrical output terminal of the power discharge module through two switch contacts of the logic stable switch;

[0022] The relay is used to control the conduction of two switch contacts according to the power stable signal.

[0023] In one embodiment, the logic comparison unit includes a first voltage dividing element, a second voltage dividing element and a control sub-switch unit;

[0024] The first end of the first voltage divider element is used to connect to the electrical output end of the power discharge module, the second end of the first voltage divider element is connected to the first end of the second voltage divider element, and the second end of the second voltage divider element is used to connect to the electrical input end of the power discharge module;

[0025] The first end of the control sub-switch unit and the electrical input end of the logic switch unit are both connected to the first end of the first voltage divider element, the second end of the control sub-switch unit is connected to the second end of the first voltage divider element, the third end of the control sub-switch unit is connected to the logic control end of the logic switch unit, and the fourth end of the control sub-switch unit is connected to the logic control end of the logic stabilization unit;

[0026] The electrical output terminal of the logic switch unit and the first control terminal of the logic stabilization unit are both used to connect to the first terminal of the mobile device to be charged, and the fifth terminal of the control sub-switch unit and the second control terminal of the logic stabilization unit are both used to connect to the electrical input terminal of the power discharge module and the second terminal of the mobile device to be charged;

[0027] The first voltage divider element and the second voltage divider element determine the size of the preset discharge threshold. After the power discharge module is turned on, when the voltage across the power discharge module is greater than or equal to the preset discharge threshold, the control sub-switch unit controls the logic switch unit to turn on; after the power discharge module is turned off, when the voltage across the power discharge module is less than the preset discharge threshold, the control sub-switch unit controls the logic switch unit to turn off, and controls the first control terminal and the second control terminal of the logic stabilization unit to turn on, thereby discharging the voltage across the mobile device to be charged.

[0028] In one embodiment, the control sub-switch unit includes a logic sub-switch, a current limiting element, a pull-up element, a power transmission element, a diode, and a charge and discharge capacitor;

[0029] The anode of the diode is the first terminal of the control sub-switch unit, the cathode of the diode is connected to the first terminal of the charge-discharge capacitor through the power transmission element, and the second terminal of the charge-discharge capacitor is the fifth terminal of the control sub-switch unit;

[0030] The first end of the charge and discharge capacitor is connected to the first control end of the logic sub-switch through a pull-up element, and the first control end of the logic sub-switch is the fourth end of the control sub-switch unit;

[0031] The logic control terminal of the logic sub-switch is the second terminal of the control sub-switch unit, the first control terminal of the logic sub-switch is connected to the first terminal of the current limiting element, and the second terminal of the current limiting element is the third terminal of the control sub-switch unit;

[0032] The second control terminal of the logic sub-switch is the fifth terminal of the control sub-switch unit;

[0033] After the power discharge module is discharged, when the voltage across the power discharge module is greater than or equal to a preset discharge threshold, the logic control end of the logic sub-switch controls the first control end and the second end of the logic sub-switch to be turned on, so that the logic switch unit is turned on; when the voltage across the power discharge module is less than the preset discharge threshold, the logic control end of the logic sub-switch controls the first control end and the second end of the logic sub-switch to be turned off, so that the logic switch unit is turned off.

[0034] In one embodiment, the logic stabilization unit includes a discharge element and a discharge logic switch;

[0035] The first end of the discharge element is the first control end of the logic stabilization unit, and the second end of the discharge element is connected to the first control end of the discharge logic switch;

[0036] The logic control terminal of the discharge logic switch is the logic control terminal of the logic stabilization unit, and the second control terminal of the discharge logic switch is the second control terminal of the logic stabilization unit;

[0037] After the power discharge module discharges, when the voltage across the power discharge module is greater than or equal to a preset discharge threshold, the discharge logic switch is turned off; after the power discharge module stops discharging, when the voltage across the power discharge module is less than the preset discharge threshold, the discharge logic switch is turned on.

[0038] A mobile power supply, comprising a mobile power supply housing, an energy storage battery, a battery charger, and a mobile power supply circuit according to any one of the above embodiments, arranged in the mobile power supply housing;

[0039] The power discharging module is used to charge the mobile device to be charged according to the power of the energy storage battery;

[0040] The battery charger is used to charge the energy storage battery.

[0041] In the aforementioned power bank, the device interaction module establishes communication with the mobile device to be charged and issues a power stabilization signal based on the device information of the mobile device to be charged. Furthermore, upon receiving the power stabilization signal based on the device information of the mobile device to be charged, the power stabilization module stabilizes the discharge of the power discharge module while the power discharge module is charging the mobile device, preventing excessive discharge from the power bank circuit and damage to the mobile device or the power bank itself. This interaction with the mobile device prevents extreme operating conditions caused by charging some of the mobile devices, thereby improving the safety of the power bank. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 A structural diagram of a mobile power supply circuit module according to one embodiment;

[0043] Figure 2 A structural diagram of a mobile power supply circuit module according to another embodiment;

[0044] Figure 3 This is a structural diagram of a mobile power supply circuit module according to another embodiment;

[0045] Figure 4 A circuit diagram of a mobile power supply according to one embodiment of the present invention is shown. DETAILED DESCRIPTION

[0046] In order to better understand the purpose, technical solutions and technical effects of the present invention, the present invention is further explained below with reference to the accompanying drawings and embodiments. It is also stated that the embodiments described below are only used to illustrate the present invention and are not intended to limit the present invention.

[0047] An embodiment of the present invention provides a mobile power supply circuit.

[0048] Figure 1 FIG. 1 is a structural diagram of a mobile power supply circuit module according to an embodiment of the present invention. Figure 1 As shown, a mobile power supply circuit of one embodiment includes a power discharging module 100, a device interaction module 101 and a power stabilization module 102:

[0049] The power discharging module 100 is used to charge the mobile device to be charged;

[0050] The device interaction module 101 is used to establish communication interaction with the mobile device to be charged and send a power stability signal according to the device information of the mobile device to be charged;

[0051] The power stabilization module 102 is configured to start working upon receiving a power stabilization signal and stabilize the discharge of the power discharging module 100 after starting working.

[0052] like Figure 1As shown, the power discharge module 100 completes charging of the mobile device to be charged based on the electrical energy of the energy storage battery. In one embodiment, the power discharge module 100 is a DC / DC module, i.e., a DC conversion circuit, which converts the electrical energy of the energy storage battery into a DC charging current that can be used for the mobile device to be charged. Among them, the power discharge module 100, as the core circuit of the mobile power supply, has a certain conversion range for its DC conversion design, and its applicable mobile devices to be charged are limited. For example, the charging currents required by mobile devices to be charged, such as smartphones, smart laptops, or smart watches, are different, and the charging currents required by different types of smartphones are also different. The power discharge module 100 is only applicable to some of these devices. When facing other mobile devices to be charged, the power discharge module 100 needs to deal with operating conditions beyond the preset range, resulting in surges or oscillations such as high current or high voltage.

[0053] Based on this, when designing the power supply discharge module 100, the applicable range of mobile devices to be charged can be pre-set, including pre-storing the model parameters, charge and discharge parameters, etc. of the mobile devices to be charged. When using a mobile power bank to charge the mobile device to be charged, the device interaction module 101 interacts with the mobile device to be charged and obtains the device information of the mobile device to be charged. The device information of the mobile device to be charged includes the model parameters or the charge and discharge parameters. The device interaction module 101 obtains the device information of the mobile device to be charged and determines whether the charge and discharge characteristics required by the mobile device to be charged fall within the design range of the power supply discharge module 100. If the charge and discharge characteristics required by the mobile device to be charged exceed the design range, a power supply stability signal is issued.

[0054] In one embodiment, Figure 2 FIG. 1 is a structural diagram of a mobile power supply circuit module according to another embodiment of the present invention. Figure 2 As shown, the device interaction module 101 includes a wireless communication unit 200 and an information processing unit 201;

[0055] The wireless communication unit 200 is used to establish wireless communication with the mobile device to be charged;

[0056] The information processing unit 201 is configured to obtain device information of the mobile device to be charged through wireless communication, and to send a power stabilization signal according to the device information of the mobile device to be charged.

[0057] like Figure 2As shown, the wireless communication unit 200 establishes wireless communication with the mobile device being charged during charging. Before use, the user can establish a connection between the mobile device being charged and the wireless communication unit 200 by operating the mobile device being charged. In one embodiment, the wireless communication unit 200 includes a Bluetooth communication unit, an infrared communication module, and an NFC communication module. In a preferred embodiment, the wireless communication unit 200 includes a Bluetooth communication unit.

[0058] The information processing unit 201 obtains device information of the mobile device to be charged based on wireless communication established by the wireless communication unit 200, and determines whether the device information of the mobile device to be charged and the required charge-discharge characteristics of the mobile device to be charged exceed the design range. In one embodiment, the information processing unit 201 pre-stores preset information that meets the design range and matches the preset information with the device information of the mobile device to be charged. If the match is successful, the required charge-discharge characteristics of the mobile device to be charged are determined to meet the design range; otherwise, a power supply stability signal is issued. In one embodiment, the information processing unit 201 includes a single-chip microcomputer or a digital signal processor. In a preferred embodiment, the information processing unit 201 includes a digital signal processor.

[0059] The power stabilization module 102 is activated according to the power stabilization signal; after the activation, the discharge of the power discharging module 100 is stabilized.

[0060] In one embodiment, the wireless communication unit 200 and the information processing unit 201 both obtain power supply support from the power discharging module 100 .

[0061] In one embodiment, the power stabilization module 102 includes an overvoltage protection circuit, an undervoltage protection circuit, etc. Among them, when the power discharge module 100 is in a charging condition beyond the design range, there are over-discharge and self-oscillation after over-discharge, which have an adverse effect on the normal operation and power-on and power-off of the circuit. Based on this, in one embodiment, Figure 3 FIG. 1 is a structural diagram of a mobile power supply circuit module according to another embodiment of the present invention. Figure 3 As shown, it includes a logic comparison unit 300, a logic switch unit 301, a logic stabilization unit 302 and a logic stabilization switch 303;

[0062] The electrical input terminal of the logic switch unit 301 is connected to the electrical output terminal of the power discharging module 100 through the logic stabilization switch 303; the electrical output terminal of the logic switch unit 301 is connected to the first control terminal of the logic stabilization unit 302 and is used to connect to the first terminal of the mobile device to be charged; wherein the logic stabilization switch 303 is used to turn on when receiving the power stabilization signal;

[0063] like Figure 3As shown, when the logic stabilization switch 303 is turned on, the electrical input end of the logic switch unit 301 is connected to the electrical output end of the power discharge module 100, and the power is supplied by the power discharge module 100 to enter the working state.

[0064] The logic stable switch 303 includes a semiconductor switch tube, a relay or an electronic switch.

[0065] As a preferred embodiment, the logic stable switch 303 includes a relay;

[0066] The electrical input terminal of the logic switch unit 301 is connected to the electrical output terminal of the power supply discharge module 100 through two switch contacts of the logic stabilization switch 303;

[0067] The relay is used to control the conduction of two switch contacts according to the power stable signal.

[0068] The logic comparison unit 300 is respectively connected to the electrical input terminal of the logic switch unit 301, the logic control terminal of the logic switch unit 301, the logic control terminal of the logic stabilization unit 302, and the second control terminal of the logic stabilization unit 302, and is used to respectively connect to the electrical output terminal and the electrical input terminal of the power discharge module 100; the second control terminal of the logic stabilization unit 302 is used to connect to the second terminal of the mobile device to be charged;

[0069] The logic comparison unit 300 is used to control the logic switch unit 301 to turn on when the discharge is greater than or equal to a preset discharge threshold after the power supply discharge module 100 discharges; after the discharge is completed, when the discharge is less than the preset discharge threshold, the logic switch unit 301 is controlled to turn off, and the first control terminal and the second control terminal of the logic stabilization unit 302 are controlled to turn on, thereby discharging the voltage of the mobile device to be charged.

[0070] The preset discharge threshold is a reference value for comparison by the logic comparison unit 300 and can be determined by the internal circuit structure of the logic comparison unit 300. Figure 3As shown, according to the circuit characteristics of the logic control terminal of the logic switch unit 301, when the voltage across the power discharge module 100 is greater than or equal to a preset discharge threshold, the electrical input and output terminals of the logic switch unit 301 are turned on to connect the power supply circuit between the power discharge module 100 and the mobile device to be charged. When the voltage across the power discharge module 100 is less than the preset discharge threshold, the electrical input and output terminals of the logic switch unit 301 are turned off to disconnect the power supply circuit between the power discharge module 100 and the mobile device to be charged. Simultaneously, according to the circuit characteristics of the logic control terminal of the logic stabilization unit 302, when the voltage across the power discharge module 100 is greater than or equal to the preset discharge threshold, the first and second control terminals of the logic stabilization unit 302 are disconnected. When the voltage across the power discharge module 100 is less than the preset discharge threshold and the logic switch unit 301 is turned off, the first and second control terminals of the logic stabilization unit 302 are connected to discharge the residual voltage from the mobile device to be charged.

[0071] In one embodiment, Figure 4 A mobile power supply circuit diagram of an embodiment is shown in FIG. Figure 4 As shown, the logic comparison unit 300 includes a first voltage dividing element F1, a second voltage dividing element F2 and a control sub-switch unit 400;

[0072] The first voltage dividing element F1 and the second voltage dividing element F2 can be electronic components with voltage dividing function, as a preferred embodiment, such as Figure 4 As shown, the first voltage divider element F1 and the second voltage divider element F2 are resistors, wherein the selection of the first voltage divider element F1 and the second voltage divider element F2 determines the voltage of the preset discharge threshold.

[0073] The first end of the first voltage divider element F1 is connected to the electrical output end of the power discharging module 100, the second end of the first voltage divider element F1 is connected to the first end of the second voltage divider element F2, and the second end of the second voltage divider element F2 is connected to the electrical input end of the power discharging module 100;

[0074] A first terminal of the control sub-switch unit M1 and an electrical input terminal of the logic switch unit 301 are both connected to a first terminal of the first voltage-dividing element F1, a second terminal of the control sub-switch unit M1 is connected to a second terminal of the first voltage-dividing element F1, a third terminal of the control sub-switch unit M1 is connected to a logic control terminal of the logic switch unit 301, and a fourth terminal of the control sub-switch unit M1 is connected to a logic control terminal of the logic stabilization unit 302;

[0075] The electrical output terminal of the logic switch unit 301 and the first control terminal of the logic stabilization unit 302 are both used to connect to the first terminal of the mobile device to be charged, and the fifth terminal of the control sub-switch unit M1 and the second control terminal of the logic stabilization unit 302 are both used to connect to the electrical input terminal of the power discharging module 100 and the second terminal of the mobile device to be charged;

[0076] The first voltage divider element F1 and the second voltage divider element F2 determine the size of the preset discharge threshold. After the power discharge module 100 is turned on, when the voltage across the power discharge module 100 is greater than or equal to the preset discharge threshold, the control sub-switch unit M1 controls the logic switch unit 301 to be turned on. After the power discharge module 100 is turned off, when the voltage across the power discharge module 100 is less than the preset discharge threshold, the control sub-switch unit M1 controls the logic switch unit 301 to be turned off, and controls the first control terminal and the second control terminal of the logic stabilization unit 302 to be turned on, thereby discharging the voltage across the mobile device to be charged.

[0077] In one embodiment, Figure 4 As shown, the control sub-switch unit M1 includes a logic sub-switch K1, a current limiting element X1, a pull-up element X2, a power transmission element X3, a diode D1 and a charge-discharge capacitor C1;

[0078] As above, while satisfying the corresponding functions of the current limiting element X1, the pull-up element X2, and the power transmission element X3, the current limiting element X1, the pull-up element X2, and the power transmission element X3 have open selection options. As a preferred embodiment, the current limiting element X1, the pull-up element X2, and the power transmission element X3 are all resistors.

[0079] The anode of the diode D1 is the first terminal of the control sub-switch unit M1, the cathode of the diode D1 is connected to the first terminal of the charge-discharge capacitor C1 through the power transmission element X3, and the second terminal of the charge-discharge capacitor C1 is the fifth terminal of the control sub-switch unit M1;

[0080] The first end of the charge and discharge capacitor C1 is connected to the first control end of the logic sub-switch K1 through the pull-up element X2. The first control end of the logic sub-switch K1 is the fourth end of the control sub-switch unit M1.

[0081] The logic control terminal of the logic sub-switch K1 is the second terminal of the control sub-switch unit M1, the first control terminal of the logic sub-switch K1 is connected to the first terminal of the current limiting element X1, and the second terminal of the current limiting element X1 is the third terminal of the control sub-switch unit M1;

[0082] The second control terminal of the logic sub-switch K1 is the fifth terminal of the control sub-switch unit M1;

[0083] After the power discharging module 100 is discharged, when the voltage across the power discharging module 100 is greater than or equal to a preset discharge threshold, the logic control end of the logic sub-switch K1 controls the first control end and the second end of the logic sub-switch K1 to be turned on, so that the logic switch unit 301 is turned on; when the voltage across the power discharging module 100 is less than the preset discharge threshold, the logic control end of the logic sub-switch K1 controls the first control end and the second end of the logic sub-switch K1 to be turned off, so that the logic switch unit 301 is turned off.

[0084] In one embodiment, Figure 4 As shown, the logic stabilization unit 302 includes a discharge element S1 and a discharge logic switch K2;

[0085] As shown above, the discharge element S1 can be openly selected according to the discharge function. As a preferred embodiment, the discharge element S1 is a resistor.

[0086] The first end of the discharge element S1 is the first control end of the logic stabilization unit 302, and the second end of the discharge element S1 is connected to the first control end of the discharge logic switch K2;

[0087] The logic control terminal of the discharge logic switch K2 is the logic control terminal of the logic stabilization unit 302, and the second control terminal of the discharge logic switch K2 is the second control terminal of the logic stabilization unit 302;

[0088] After the power discharge module 100 discharges, when the voltage across the power discharge module 100 is greater than or equal to a preset discharge threshold, the discharge logic switch K2 is turned off; after the power discharge module 100 stops discharging, when the voltage across the power discharge module 100 is less than the preset discharge threshold, the discharge logic switch K2 is turned on.

[0089] In one embodiment, each of the switch units and switches that implement the switching function may be an electronic switch, relay, or semiconductor switch. As a preferred embodiment, to facilitate circuit coordination with various components, each of the switch units and switches that implement the switching function may be a semiconductor switch, such as a thyristor or field-effect transistor, and the switching characteristics of the semiconductor switch are utilized to implement the switching function of each switch unit and switch.

[0090] The aforementioned mobile power supply circuit includes a power discharge module 100, a device interaction module 101, and a power stabilization module 102. The device interaction module 101 establishes communication interaction with the mobile device to be charged and issues a power stabilization signal based on the device information of the mobile device to be charged. Furthermore, if the power stabilization signal is issued based on the device information of the mobile device to be charged, the power stabilization module 102 stabilizes the discharge of the power discharge module 100 while the power discharge module 100 is charging the mobile device to be charged, thereby preventing damage to the mobile device or the mobile power supply circuit itself due to excessive discharge. Based on this, by interacting with the mobile device to be charged, the extreme operating conditions caused by charging some of the mobile devices to be charged can be avoided, thereby improving the safety of the mobile power supply.

[0091] An embodiment of the present invention also provides a mobile power supply.

[0092] A mobile power supply includes a mobile power supply housing, an energy storage battery, a battery charger, and a mobile power supply circuit according to any of the above embodiments, which are arranged in the mobile power supply housing;

[0093] The power discharging module is used to charge the mobile device to be charged according to the power of the energy storage battery;

[0094] The battery charger is used to charge the energy storage battery.

[0095] In the aforementioned power bank, the device interaction module establishes communication with the mobile device to be charged and issues a power stabilization signal based on the device information of the mobile device to be charged. Furthermore, upon receiving the power stabilization signal based on the device information of the mobile device to be charged, the power stabilization module stabilizes the discharge of the power discharge module while the power discharge module is charging the mobile device, preventing excessive discharge from the power bank circuit and damage to the mobile device or the power bank itself. This interaction with the mobile device prevents extreme operating conditions caused by charging some of the mobile devices, thereby improving the safety of the power bank.

[0096] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0097] The above embodiments merely illustrate several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the patent for this invention shall be determined by the appended claims.

Claims

1. A mobile power supply circuit, characterized in that: include: A power discharging module is used to charge the mobile device to be charged; A device interaction module, configured to establish communication interaction with the mobile device to be charged and send a power stabilization signal according to device information of the mobile device to be charged; A power stabilization module, configured to start working upon receiving the power stabilization signal; and stabilize the discharge of the power discharging module after starting working; The device interaction module includes a wireless communication unit and an information processing unit; The wireless communication unit is used to establish wireless communication with the mobile device to be charged; The information processing unit is used to obtain device information of the mobile device to be charged through the wireless communication, and send a power stabilization signal according to the device information of the mobile device to be charged; The information processing unit is used to match the device information of the mobile device to be charged with preset information, and to send a power stabilization signal when the matching fails.

2. The mobile power supply circuit according to claim 1, characterized in that: The wireless communication unit includes a Bluetooth communication unit; the information processing unit includes a digital signal processor.

3. The mobile power supply circuit according to claim 1, characterized in that: The power stabilization module includes a logic comparison unit, a logic switch unit, a logic stabilization unit and a logic stabilization switch; The electrical input end of the logic switch unit is connected to the electrical output end of the power discharging module through the logic stabilization switch; the electrical output end of the logic switch unit is connected to the first control end of the logic stabilization unit and is used to connect to the first end of the mobile device to be charged; wherein the logic stabilization switch is used to be turned on when receiving the power stabilization signal; The logic comparison unit is respectively connected to the electrical input terminal of the logic switch unit, the logic control terminal of the logic switch unit, the logic control terminal of the logic stabilization unit, and the second control terminal of the logic stabilization unit, and is used to be respectively connected to the electrical output terminal and the electrical input terminal of the power discharge module; the second control terminal of the logic stabilization unit is used to be connected to the second terminal of the mobile device to be charged; The logic comparison unit is used to control the logic switch unit to turn on when the discharge is greater than or equal to a preset discharge threshold after the power supply discharge module discharges; after the discharge is completed, when the discharge is less than the preset discharge threshold, control the logic switch unit to turn off, and control the first control end and the second control end of the logic stabilization unit to turn on, so as to discharge the voltage of the mobile device to be charged.

4. The mobile power supply circuit according to claim 3, characterized in that: The logic stable switch includes a relay; The electrical input end of the logic switch unit is connected to the electrical output end of the power discharge module through the two switch contacts of the logic stabilization switch; The relay is used to control the two switch contacts to be turned on according to the power stabilization signal.

5. The mobile power supply circuit according to claim 3, characterized in that: The logic comparison unit includes a first voltage dividing element, a second voltage dividing element and a control sub-switch unit; The first end of the first voltage divider element is used to connect to the electrical output end of the power discharge module, the second end of the first voltage divider element is connected to the first end of the second voltage divider element, and the second end of the second voltage divider element is used to connect to the electrical input end of the power discharge module; The first end of the control sub-switch unit and the electrical input end of the logic switch unit are both connected to the first end of the first voltage divider element, the second end of the control sub-switch unit is connected to the second end of the first voltage divider element, the third end of the control sub-switch unit is connected to the logic control end of the logic switch unit, and the fourth end of the control sub-switch unit is connected to the logic control end of the logic stabilization unit; The electrical output terminal of the logic switch unit and the first control terminal of the logic stabilization unit are both used to connect to the first terminal of the mobile device to be charged, and the fifth terminal of the control sub-switch unit and the second control terminal of the logic stabilization unit are both used to connect to the electrical input terminal of the power discharge module and the second terminal of the mobile device to be charged; The first voltage dividing element and the second voltage dividing element determine the size of the preset discharge threshold. After the power discharge module is turned on, when the voltage across the power discharge module is greater than or equal to the preset discharge threshold, the control sub-switch unit controls the logic switch unit to be turned on; after the power discharge module is turned off, when the voltage across the power discharge module is less than the preset discharge threshold, the control sub-switch unit controls the logic switch unit to be turned off, and controls the first control end and the second control end of the logic stabilization unit to be turned on, thereby discharging the voltage across the mobile device to be charged.

6. The mobile power supply circuit according to claim 5, characterized in that: The control sub-switch unit includes a logic sub-switch, a current limiting element, a pull-up element, a power transmission element, a diode and a charge and discharge capacitor; The anode of the diode is the first terminal of the control sub-switch unit, the cathode of the diode is connected to the first terminal of the charge-discharge capacitor through the power transmission element, and the second terminal of the charge-discharge capacitor is the fifth terminal of the control sub-switch unit; The first end of the charging and discharging capacitor is connected to the first control end of the logic sub-switch through the pull-up element, and the first control end of the logic sub-switch is the fourth end of the control sub-switch unit; The logic control terminal of the logic sub-switch is the second terminal of the control sub-switch unit, the first control terminal of the logic sub-switch is connected to the first terminal of the current limiting element, and the second terminal of the current limiting element is the third terminal of the control sub-switch unit; The second control terminal of the logic sub-switch is the fifth terminal of the control sub-switch unit; After the power discharge module is discharged, when the voltage across the power discharge module is greater than or equal to a preset discharge threshold, the logic control end of the logic sub-switch controls the first control end and the second end of the logic sub-switch to be turned on, so that the logic switch unit is turned on; when the voltage across the power discharge module is less than the preset discharge threshold, the logic control end of the logic sub-switch controls the first control end and the second end of the logic sub-switch to be turned off, so that the logic switch unit is turned off.

7. The mobile power supply circuit according to claim 6, characterized in that: The logic stabilization unit includes a discharge element and a discharge logic switch; The first end of the discharge element is the first control end of the logic stabilization unit, and the second end of the discharge element is connected to the first control end of the discharge logic switch; The logic control terminal of the discharge logic switch is the logic control terminal of the logic stabilization unit, and the second control terminal of the discharge logic switch is the second control terminal of the logic stabilization unit; After the power discharge module discharges, when the voltage across the power discharge module is greater than or equal to a preset discharge threshold, the discharge logic switch is turned off; after the power discharge module stops discharging, when the voltage across the power discharge module is less than the preset discharge threshold, the discharge logic switch is turned on.

8. A mobile power supply, characterized in that: A mobile power supply housing, an energy storage battery, a battery charger and a mobile power supply circuit according to any one of claims 1 to 7, arranged in the mobile power supply housing; The power discharging module is used to charge the mobile device to be charged according to the electric energy of the energy storage battery; The battery charger is used to charge the energy storage battery.

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