A portable power source

Abstract

The present invention provides a portable power source, including a battery, and also including: an input interface, a microcontroller and an output interface; a first protocol IC is also included between the input interface and the microcontroller, and a second protocol IC is also included between the microcontroller and the output interface, wherein when the input interface is connected to a charging device and the output interface is connected to a load, the second protocol IC identifies the charging demand of the load, the microcontroller sends the charging demand to the first protocol IC, and the first protocol IC communicates with the charging device by handshake so that the charging device adjusts the input voltage and / or input current of the input interface according to the charging demand. Based on the charging and / or discharging of the protocol, the power supply capacity of the power supply end is directly transmitted to the device to avoid information loss, and the charging fully complies with the protocol to avoid safety accidents.

Description

Technical Field

[0001] The invention relates to a power supply device, in particular to a portable power supply. Background Art

[0002] A mobile power bank is a portable charger that integrates power supply and charging functions. It can charge or provide standby power for mobile phones and other digital devices anytime and anywhere.

[0003] In the usage scenario, there are generally two scenarios. One is that the adapter charges the mobile power supply. After the mobile power supply is fully charged, the mobile power supply or adapter is used to charge the device again; the other is that the mobile power supply has the function of charging and discharging at the same time. When the adapter is connected to the mobile power supply, the output end of the mobile power supply is connected to the device. After the adapter fully charges the device, it switches back to charging the mobile power supply. The second scenario currently only exists in the conventional 5V state. With the popularity of QC high-voltage charging, more and more devices support high-voltage charging above 5V. The voltage range has also changed from the conventional 5V to 3.6V~20V. Because the charging voltages of the mobile power supply and the device may be different, it is necessary to solve the problem of high-voltage input and low-voltage charging of the device when charging and discharging at the same time to avoid the situation where high-voltage charging damages the device.

[0004] Therefore, in view of the existence of the above technical problems, it is necessary to propose and improve a portable power supply. Summary of the invention

[0005] A series of simplified concepts are introduced in the Summary of the Invention section, which will be further described in detail in the Specific Implementation section. The Summary of the Invention section of the present invention does not mean to attempt to limit the key features and necessary technical features of the technical solution claimed for protection, nor does it mean to attempt to determine the scope of protection of the technical solution claimed for protection. In view of the shortcomings of the prior art, the present invention provides a portable power supply on one hand, including a battery, and also including: an input interface, a microcontroller and an output interface; a first protocol IC is also included between the input interface and the microcontroller, and a second protocol IC is also included between the microcontroller and the output interface, wherein, when the input interface is connected to a charging device and the output interface is connected to a load, the second protocol IC identifies the charging demand of the load, and the microcontroller sends the charging demand to the first protocol IC, and the first protocol IC communicates with the charging device by handshake so that the charging device adjusts the voltage and / or current of the input interface according to the charging demand.

[0006] Furthermore, the portable power supply further comprises a first switch, an input end of the first switch is connected to the input interface, an output end of the first switch is connected to the output interface, and a control end of the first switch is connected to the microcontroller.

[0007] Furthermore, the portable power supply also includes a power supply circuit and a second switch; wherein the power supply circuit is connected to the battery; the input end of the second switch is connected to the power supply circuit, the output end of the second switch is connected to the output interface, and the control end of the second switch is connected to the microcontroller.

[0008] Furthermore, when the input interface is connected to a charging device and the output interface is connected to a load, the microcontroller controls the first switch to be turned on.

[0009] Further, when the input interface is connected to the charging device and the output interface is connected to the load, the microcontroller controls the second switch to be disconnected.

[0010] Further, the first protocol IC is connected to the input interface through D+ and D- interfaces, and the second protocol IC is connected to the output interface through D+ and D- interfaces.

[0011] Furthermore, when the input interface is not connected to a charging device and the output interface is connected to a load, the second protocol IC identifies the charging demand of the load and adjusts the output voltage of the output interface through the microcontroller.

[0012] Furthermore, adjusting the output voltage of the output interface by the microcontroller includes: the microcontroller controls the second switch to be turned on, and controls the power supply circuit to adjust the output voltage of the output interface.

[0013] Further, when the input interface is connected to the charging device and the output interface is not connected to a load, the first protocol IC communicates with the charging device by handshake, so that the charging device adjusts the input voltage of the input interface to charge the battery.

[0014] Furthermore, the first protocol and the second protocol are at least one of BC1.2, Apple 5V / 2.4A / 2.1A / 1A / 0.5A, DCP, and D+ / D-Short Mode per Telecommunication.

[0015] Since the present invention adds protocol control at the input end and / or the device end, charging becomes more intelligent, complies with the protocol, and is safer; and the charging and discharging function with wide voltage input and wide voltage output is added, the charging speed is faster and the experience is better; based on the charging and / or discharging of the protocol, the power supply capacity of the power supply end is directly transmitted to the device to avoid information loss, and the charging fully complies with the protocol to avoid safety accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The following drawings of the present invention are used to understand the present invention as part of the present invention. The embodiments of the present invention are shown in the drawings and the description thereof is used to explain the principle of the present invention.

[0017] In the attached figure:

[0018] Figure 1 A schematic diagram showing a framework of a power supply according to an embodiment of the present invention.

[0019] Description of reference numerals:

[0020] 1 First switch

[0021] 2 Second switch

[0022] 3 Input Interface

[0023] 4 Output Interface

[0024] 5 First Protocol IC

[0025] 6 Second Protocol IC

[0026] 7 Batteries DETAILED DESCRIPTION

[0027] In the following description, a large number of specific details are provided to provide a more thorough understanding of the present invention. However, it is apparent to those skilled in the art that the present invention can be implemented without one or more of these details. In other examples, in order to avoid confusion with the present invention, some technical features well known in the art are not described.

[0028] It should be understood that the present invention can be implemented in different forms and should not be construed as being limited to the embodiments presented herein. On the contrary, providing these embodiments will make the disclosure thorough and complete and fully convey the scope of the present invention to those skilled in the art. In the accompanying drawings, the sizes and relative sizes of layers and regions may be exaggerated for clarity. The same reference numerals throughout represent the same elements.

[0029] It should be understood that when an element or layer is referred to as being "on, adjacent to, connected to or coupled to other elements or layers, it may be directly on, adjacent to, connected to or coupled to other elements or layers, or there may be intervening elements or layers. In contrast, when an element is referred to as being "directly on, directly adjacent to, directly connected to or directly coupled to other elements or layers, there may be no intervening elements or layers. It should be understood that, although the terms first, second, third, etc. may be used to describe various elements, components, regions, layers and / or parts, these elements, components, regions, layers and / or parts should not be limited by these terms. These terms are only used to distinguish one element, component, region, layer or part from another element, component, region, layer or part. Therefore, without departing from the teachings of the present invention, the first element, component, region, layer or part discussed below may be represented as a second element, component, region, layer or part.

[0030] Spatially relative terms such as "under," "below," "below," "under," "above," "above," etc., may be used herein for ease of description to describe the relationship of an element or feature shown in the figures to other elements or features. It should be understood that in addition to the orientations shown in the figures, the spatially relative terms are intended to include different orientations of the device in use and operation. For example, if the device in the accompanying drawings is flipped, then the elements or features described as "under other elements" or "under" or "under" will be oriented as "on" the other elements or features. Therefore, the exemplary terms "under" and "under" may include both upper and lower orientations. The device may be oriented otherwise (rotated 90 degrees or other orientations) and the spatial descriptors used herein are interpreted accordingly.

[0031] The purpose of the terms used herein is only to describe specific embodiments and is not intended to be limiting of the present invention. When used herein, the singular forms "one", "an" and "said / the" are also intended to include plural forms, unless the context clearly indicates otherwise. It should also be understood that the terms "consisting of" and / or "comprising", when used in this specification, determine the presence of the features, integers, steps, operations, elements and / or parts, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, parts and / or groups. When used herein, the term "and / or" includes any and all combinations of the relevant listed items.

[0032] In order to fully understand the present invention, a detailed structure will be presented in the following description to illustrate the technical solution proposed by the present invention. The preferred embodiments of the present invention are described in detail below, but in addition to these detailed descriptions, the present invention may also have other implementations.

[0033] To achieve this, the present invention provides a protocol-based power supply with wide voltage input and wide voltage output, including: an input interface, a microcontroller and an output interface; a first protocol IC is also included between the input interface and the microcontroller, and a second protocol IC is also included between the microcontroller and the output interface.

[0034] Below, reference Figure 1 A power supply with wide voltage input and wide voltage output based on a protocol of the present invention is described in detail, wherein: Figure 1 A schematic diagram showing a framework of a power supply according to an embodiment of the present invention.

[0035] The MCU referred to in the present invention refers to Micro Controller Unit, a microcontroller, a micro control unit, also known as a single chip microcomputer or a single chip microcomputer. The frequency and specifications of the central processing unit (CPU) are appropriately reduced, and the memory, counter, USB, A / D conversion, UART, PLC, DMA and other peripheral interfaces, and even LCD drive circuits are integrated on a single chip to form a chip-level computer, which can perform different combination controls for different application scenarios.

[0036] The DC-DC referred to in the present invention refers to a power supply circuit having a voltage conversion function (an IC with a step-down, step-up or step-down function).

[0037] The LDO referred to in the present invention refers to a low dropout regulator, a low voltage difference linear regulator, which is relative to the traditional linear regulator. Traditional linear regulators, such as the 78XX series chips, require the input voltage to be at least 2V to 3V higher than the output voltage, otherwise they cannot work properly. However, in some cases, such conditions are obviously too harsh. For example, when converting 5V to 3.3V, the voltage difference between the input and the output is only 1.7V, which obviously does not meet the working conditions of the traditional linear regulator. LDO is a linear regulator that uses transistors or field effect transistors (FETs) operating in their linear region to subtract excess voltage from the applied input voltage to produce a regulated output voltage. The so-called dropout voltage refers to the minimum difference between the input voltage and the output voltage required for the regulator to maintain the output voltage within 100mV above or below its rated value. Positive output voltage LDO (low dropout) regulators usually use power transistors (also called transfer devices) as PNP. This transistor allows saturation, so the regulator can have a very low dropout voltage, typically around 200mV, compared to around 2V for a conventional linear regulator using an NPN composite power transistor. A negative output LDO uses an NPN as its pass device, operating in a similar manner to a positive output LDO's PNP device.

[0038] Newer developments use MOS power transistors, which provide the lowest dropout voltage. With power MOS, the only voltage drop across the regulator is caused by the ON resistance of the power supply device load current. If the load is small, the voltage drop produced in this way is only a few tens of millivolts. Low-dropout (LDO) linear regulators have low cost, low noise, and low quiescent current, which are its outstanding advantages. It also requires very few external components, usually only one or two bypass capacitors. The better LDO linear regulator can achieve the following indicators: output noise 30μV, PSRR of 60dB, quiescent current 6μA (TI's TPS78001 achieves Iq = 0.5uA), and voltage drop is only 100mV (TI mass-produced LDOs that claim to be 0.1mV). The main reason why the performance of LDO linear regulators can reach this level is that the adjustment tube uses a P-channel MOSFET, while ordinary linear regulators use PNP transistors. P-channel MOSFET is voltage driven and does not require current, so the current consumed by the device itself is greatly reduced; on the other hand, in the circuit using PNP transistor, in order to prevent the PNP transistor from entering saturation and reducing output capacity, the voltage drop between input and output cannot be too low; and the voltage drop on the P-channel MOSFET is roughly equal to the product of the output current and the on-resistance. Since the on-resistance of the MOSFET is very small, the voltage drop on it is very low.

[0039] If the input voltage and output voltage are very close, it is best to use an LDO regulator, which can achieve high efficiency. Therefore, LDO regulators are mostly used in applications that convert lithium-ion battery voltage to 3V output voltage. Although 10% of the battery's energy is not used in the end, the LDO regulator can still ensure that the battery works for a long time with low noise. LDO is a new generation of integrated circuit regulators. The biggest difference between it and the three-terminal regulator is that LDO is a micro system on chip (SoC) with very low self-consumption. It can be used for current main channel control. The chip integrates MOSFET with extremely low on-line on-resistance, Schottky diodes, sampling resistors and voltage divider resistors and other hardware circuits, and has over-current protection, over-temperature protection, precision reference source, differential amplifier, delayer and other functions. PG is a new generation of LDO, with self-checking and delayed safe power supply functions for each output state, which can also be called Power Good, that is, "good power or stable power". The structure of the LDO low-dropout linear regulator mainly includes a startup circuit, a constant current source bias unit, an enable circuit, an adjustment element, a reference source, an error amplifier, a feedback resistor network, and a protection circuit. The basic working principle is as follows: when the system is powered on, if the enable pin is at a high level, the circuit starts to start, the constant current source circuit provides bias to the entire circuit, the reference source voltage is quickly established, and the output continues to rise with the input. When the output is about to reach the specified value, the output feedback voltage obtained by the feedback network is also close to the reference voltage value. At this time, the error amplifier amplifies the small error signal between the output feedback voltage and the reference voltage, and then amplifies it to the output through the adjustment tube, thereby forming a negative feedback, ensuring that the output voltage is stable at the specified value. Similarly, if the input voltage changes or the output current changes, this closed loop will keep the output voltage unchanged. The actual low-dropout linear regulator also has other functions such as load short-circuit protection, overvoltage shutdown, overheating shutdown, and reverse connection protection.

[0040] The Protocol IC referred to in the present invention, also known as the protocol IC, refers to a specific signal based on which the receiving end can change the voltage and current according to the requirements of the transmitting end after receiving the corresponding signal from the transmitting end. The protocol of this patent specifically refers to the dynamic voltage signal on USBD+ and D- to adjust the voltage and current to meet the fast charging situation.

[0041] like Figure 1 The solution shown in the figure includes an MCU, a DC-DC circuit, two protocol ICs, and an LDO circuit.

[0042] For example, for 5V, optimization is performed on the basis of conventional (voltage adaptive) charging and discharging. The D+ and D- signals at the input end are transmitted to the output end to ensure that the device is charged in accordance with the 5V standard protocol, including BC1.2, Apple5V / 2.4A / 2.1A / 1A / 0.5A, DCP, D+ / D-Short Mode per Telecommunication, IndustryStandard YD / T1591-2009 (Chinese), etc. For other voltage protocols, the corresponding protocols can also be used, such as 2.7V charging and its corresponding protocol, 2.0V charging and its corresponding protocol.

[0043] For example, protocol BC1.2 defines detection, control and reporting mechanisms for charging a device through a USB port. These mechanisms are extensions of the USB2.0 specification and are applicable to all hosts and peripherals compatible with USB2.0.

[0044] For example, APPLE's common 5V chargers all use USB-A type sockets, with 4 contact springs in the socket. The two sides are responsible for power supply V+V- (voltage positive, voltage negative), and the two in the middle are used to transmit data D+D- (data positive, data negative). The moment a mobile phone or other terminal is plugged into the charger, the mobile phone or other terminal and the data cable will detect whether D+D- has an Apple recognition protocol. If there is no recognition protocol, the mobile phone will run in a charging state of 5V0.9A. Only when the Apple protocol (apple 2.4A / 2.1A / 1A / 0.5A) is detected, the mobile phone or other terminal will charge at full speed according to 5V2.4A, 5V2A, 5V1A, 5V0.5A. Unlike the "USB-A" interface, there is another interface for fast charging, "USB-C". This new double-sided blind plug-in physical interface has greatly increased the upper limit of data transmission and power transmission. The data transmission rate is as high as 10Gbps. In terms of use, in addition to transferring files to mobile phones, it can also be connected to monitors as signal transmission cables, and can be connected to solid-state drives to run at full speed. In terms of power supply, USB-C supports a maximum power transmission of 20V5A, which is 100W, which can meet the performance requirements of electronic products in the next few years. USB-A uses D+D- for protocol identification, but USB PD uses CC lines for communication, which means that only USB-C chargers can have fast charging functions.

[0045] For example, the DCP protocol, BC1.1 specifies that non-enumerated power sources, such as wall adapter power supplies and car adapters, do not require digital communication to initiate charging. DCP can provide up to 1.5A of current and is identified by shorting D+ and D-, allowing the design of DCP "wall adapter power supplies" that use USB mini or micro jacks instead of round plugs or fixed installation wires of homemade connectors. Such adapters can be charged using any USB cable (equipped with the correct plug). Its charging current range is 500mA to 1.5A.

[0046] Illustratively, D+ / D-Short Mode per Telecommunication, Industry Standard YD / T1591-2009 (Chinese), is a charging protocol that ensures faster charging, avoids information loss, and fully complies with the protocol during charging to avoid safety accidents.

[0047] It has the function of charging and discharging at the same time when realizing high voltage input. It can quickly charge the load with high voltage when meeting high voltage input;

[0048] The specific implementation process includes the following modules:

[0049] First, LDO is the power supply circuit for MCU and the reference circuit for data calculation;

[0050] Second, MCU is the control and data processing circuit;

[0051] Third, the first protocol IC (Protocol IC) 5 is a receiving end protocol communication IC. The MCU adjusts the voltage of the input end to the required specifications through the information transmitted by the IC, charges the mobile power supply itself, or adjusts the input end voltage to the voltage required by the load according to the information transmitted by the output end, and charges the load while charging;

[0052] Fourth, the second protocol IC (Protocol IC) 6 is a transmitter protocol communication IC. The MCU adjusts the voltage of the input end to the required specifications through the information transmitted by it to charge the load, or adjusts the DC-DC voltage to the voltage required by the load according to the communication information between it and the load to charge the load;

[0053] Fifth, DC-DC is a power supply circuit that charges the mobile power supply or converts the battery voltage to the voltage required by the device to charge the load;

[0054] Sixth, input interface 3 is the input interface, connected to the USB charging device;

[0055] Seventh, the output interface 4 is the output terminal interface of the mobile power supply, which is connected to the load.

[0056] The processing circuit MCU interacts with the input interface 3 through the first protocol IC, interacts with the DC-DC through three ports, interacts with the output interface through the second protocol IC, and is connected to the control ends of the first switch 1 and the second switch 2 respectively. The first switch 1 and the second switch 2 can be transistors, such as field effect transistors or triodes. According to the above connection relationship,

[0057] Specifically, the working principle of the above circuit module is as follows:

[0058] The first state: When the input interface 3 is connected to the charging device but the output interface 4 is not connected to the load:

[0059] When the input interface 3 is connected to the charging device, the first protocol IC (Protocol IC) 5 identifies the D+, D- voltage of the input interface 3 or communicates in other ways, and transmits the corresponding information to the MCU. The MCU decodes the information according to the protocol specification and decodes it into voltage, current, temperature and other information. And charges itself according to the decoded information;

[0060] The second state: when the input interface 3 is not connected to the charging device but the output interface 4 is connected to the load:

[0061] When the MCU detects that a load is plugged into the input interface 3, the second protocol IC (Protocol IC) 6 communicates with the load, identifies the charging demand, and transmits it to the MCU. The MCU decodes the information according to the protocol specification and decodes it into the voltage, current and other information required by the device. The output voltage and current of the DC-DC are set according to the decoded information to power the load;

[0062] The third state: when the input interface 3 is connected to the charging device and the output interface 4 is connected to the load:

[0063] When the input interface 3 is connected to the charging device, the first protocol IC (Protocol IC) 5 performs handshake communication with the charging device through the D+ and D- of the input interface 3;

[0064] When the MCU detects that a device is plugged into the output interface 4, the second protocol IC (Protocol IC) 6 communicates with the load by handshake, identifies the load's charging requirements and transmits them to the MCU. The MCU decodes the information according to the protocol specification and decodes it into the voltage, current and other information required by the device;

[0065] The MCU sets the first protocol IC information according to the power supply voltage and current required by the decoded device, combined with the input terminal decoding information. After the first protocol IC communicates with the charging device, the charging device adjusts its output voltage / current so that the input interface 3 directly supplies power to the load. Further, the MCU controls the first switch 1 to be turned on and the second switch 2 to be turned off.

[0066] According to the above description, for the ordinary 5V input charging and discharging, adding protocol control between the input end and the device end makes charging more intelligent, compliant with the protocol, and safer;

[0067] Added wide voltage input and wide voltage output while charging and discharging function, faster charging speed and better experience;

[0068] Based on the protocol, the power supply capability of the power supply end is directly transmitted to the device to avoid information loss. The charging fully complies with the protocol to avoid safety accidents.

[0069] Based on the protocol (such as QC) wide voltage input, wide voltage output and charging and discharging function.

[0070] Among them, there is a first protocol IC (Protocol IC) 5 between the input interface 3 and the MCU, and the two follow the first protocol. Exemplarily, the first protocol is BC1.2. There is a second protocol IC (Protocol IC) 6 between the MCU and the output interface. Exemplarily, the second protocol is Apple 5V / 2.4A / 2.1A / 1A / 0.5A, DCP or D+ / D-Short Mode perTelecommunication, Industry Standard YD / T1591-2009 (Chinese).

[0071] In other embodiments, the first protocol is Apple 5V / 2.4A / 2.1A / 1A / 0.5A, and the second protocol is BC1.2, DCP or D+ / D-Short Mode per Telecommunication, Industry Standard YD / T1591-2009 (Chinese).

[0072] Alternatively, the first protocol is DCP, and the second protocol is BC1.2, Apple 5V / 2.4A / 2.1A / 1A / 0.5A, or D+ / D-Short Mode per Telecommunication, Industry Standard YD / T1591-2009 (Chinese).

[0073] Alternatively, the first protocol is D+ / D-Short Mode per Telecommunication, IndustryStandard YD / T1591-2009 (Chinese), and the second protocol is BC1.2, Apple 5V / 2.4A / 2.1A / 1A / 0.5A or DCP.

[0074] Adding protocol control on the input and device ends makes charging smarter, protocol-compliant, and safer; and adding wide voltage input and wide voltage output charging-while-discharging functions makes charging faster and provides a better experience; based on the protocol, the power supply capacity of the power supply end is directly transmitted to the device to avoid information loss. Charging fully complies with the protocol and avoids safety accidents.

[0075] Thus, a power supply with wide voltage input and wide voltage output based on protocol is described, comprising: an input interface, a microcontroller and an output interface; a first protocol IC is further provided between the input interface and the microcontroller, and a second protocol IC is further provided between the microcontroller and the output interface. Figure 1 As shown, the first protocol IC and the second protocol IC include the same protocol. Of course, the first protocol IC and the second protocol IC may also include different protocols. The protocol is at least one of BC1.2, Apple 5V / 2.4A / 2.1A / 1A / 0.5A, DCP, and D+ / D-Short Mode perTelecommunication. As shown in Embodiments 1 to 5, the power supply also includes a low-dropout linear regulator, and the low-dropout linear regulator is connected to the microcontroller, such as Figure 1 As shown in the LDO in the figure, the power supply also includes a power supply circuit, and the power supply circuit is connected to a battery, such as Figure 1 As shown in the DC-DC in FIG. 1 , it is connected to the battery 7, and the power supply further includes a first switch and / or a second switch, such as Figure 1 As shown in the first switch 1 and the second switch 2, Figure 1 The first switch 1 is connected to the voltage terminal VIN of the input interface 3 and to the voltage terminal VOUT of the output interface 4, and the second switch 2 is electrically connected to the power supply circuit and to the voltage terminal of the output interface. Figure 1 The second switch 2 in the embodiment is connected to the DC-DC and is connected to the voltage terminal VOUT of the output interface 4. The first protocol IC is connected to the input interface through the D+ and D- interfaces, and the second protocol IC is connected to the output interface through the D+ and D- interfaces. Figure 1 The first protocol IC5 is connected to the input interface 3 through D+ and D- interfaces, and the second protocol IC6 is connected to the output interface 4 through D+ and D- interfaces. Figure 1 As shown, the first switch 1 is connected to the port EN1 of the microcontroller, the second switch is also connected to the port EN2 of the microcontroller, and the power supply circuit DC-DC sends signals to the microcontroller through the INT and SCL ports, and receives the SDA signal of the microcontroller.

[0076] In other embodiments, there is the following situation: when the input interface 3 is not connected to the charging device and the output interface 4 is connected to the load, at this time, the second protocol IC6 identifies the charging demand and adjusts the output voltage of the output interface 4 through the microcontroller to charge the load. Preferably, the microcontroller controls the first switch to be disconnected, the second switch to be turned on, and controls the DC-DC to adjust the output voltage of the output interface 4. In this embodiment, the output end of the portable power supply and the device end have protocol control, and the portable power supply can adjust the output voltage according to the charging demand of the load, making the charging more intelligent, and the charging fully complies with the protocol to avoid safety accidents.

[0077] In other implementations, there is also the following situation: when the input interface 3 is connected to the charging device and the output interface 4 is not connected to the load, at this time, the microcontroller determines the state and charging requirements of the battery 7, and the first protocol IC5 communicates with the charging device by handshake, and sends the charging requirements of the battery 7 to the charging device, so that the charging device adjusts the input voltage of the input interface 3 to charge the battery 7. Preferably, the microcontroller controls the first switch to be disconnected and the second switch to be disconnected. The input end of the portable power supply and the charging device end have protocol control, and the portable power supply can adjust the output of the charger, making the charging of the portable power supply more intelligent, and the charging fully complies with the protocol to avoid safety accidents.

[0078] So far, the explanation and description of the main components of a portable power supply of the present invention have been completed. The complete power supply may also include other components which will not be described in detail here.

[0079] The present invention has been described by the above embodiments, but it should be understood that the above embodiments are only for the purpose of example and description, and are not intended to limit the present invention to the scope of the described embodiments. In addition, it can be understood by those skilled in the art that the present invention is not limited to the above embodiments, and more variations and modifications can be made according to the teachings of the present invention, and these variations and modifications all fall within the scope of the protection claimed by the present invention. The protection scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. A portable power source, comprising a battery, characterized in that: Also includes: Input interface, microcontroller and output interface; The input interface and the microcontroller further include a first protocol IC directly connected therebetween. A second protocol IC is also included between the microcontroller and the output interface, Among them, when the input interface is connected to the charging device and the output interface is connected to the load, the second protocol IC identifies the charging requirement of the load and sends the charging requirement to the microcontroller, the microcontroller sends the charging requirement to the first protocol IC, the first protocol IC handshakes with the charging device to enable the charging device to adjust the input voltage and / or input current of the input interface according to the charging requirement, and under the control of the microcontroller, the input interface directly and only supplies power to the load.

2. The portable power source according to claim 1, characterized in that: The portable power source further includes a first switch, an input end of the first switch is connected to the input interface, an output end of the first switch is connected to the output interface, and a control end of the first switch is connected to the microcontroller.

3. The portable power source according to claim 2, characterized in that: The portable power source also includes a power supply circuit and a second switch; wherein, The power supply circuit is connected to the battery; The input end of the second switch is connected to the power supply circuit, the output end of the second switch is connected to the output interface, and the control end of the second switch is connected to the microcontroller.

4. The portable power source according to claim 3, characterized in that: When the input interface is connected to the charging device and the output interface is connected to the load, the microcontroller controls the first switch to be turned on.

5. The portable power source according to claim 4, characterized in that: When the input interface is connected to the charging device and the output interface is connected to the load, the microcontroller controls the second switch to be disconnected.

6. The portable power source according to claim 1, characterized in that: The first protocol IC is connected to the input interface through D+ and D- interfaces, and the second protocol IC is connected to the output interface through D+ and D- interfaces.

7. The portable power source according to claim 3, characterized in that: When the input interface is not connected to the charging device and the output interface is connected to the load, the second protocol IC identifies the charging demand of the load and adjusts the output voltage of the output interface through the microcontroller.

8. The portable power source according to claim 7, characterized in that: The adjusting the output voltage of the output interface by the microcontroller comprises: The microcontroller controls the second switch to be turned on, and controls the power supply circuit to adjust the output voltage of the output interface.

9. The portable power source according to claim 1, wherein: When the input interface is connected to the charging device and the output interface is not connected to the load, the first protocol IC communicates with the charging device by handshake, so that the charging device adjusts the input voltage of the input interface to charge the battery.

10. The portable power source according to any one of claims 1 to 4, characterized in that: The first protocol and the second protocol are at least one of BC1.2, Apple 5V / 2.4A / 2.1A / 1A / 0.5A, DCP, and D+ / D-Short Mode per Telecommunication.

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