Power supply device of electronic equipment, electronic equipment and power supply method

Abstract

The present disclosure provides a power supply device of an electronic device, an electronic device and a power supply method. The power supply device includes a battery charging power management chip including a front-stage loop and a rear-stage loop. The first sub-loop, the second sub-loop and the rear-stage loop included in the front-stage loop are all connected to the battery charging power management chip, the first sub-loop is connected to the first power supply, and the second sub-loop is connected to the second power supply; the battery charging power management chip determines the first working parameter of the first sub-loop based on the first power supply, and determines the second working parameter of the second sub-loop based on the second power supply; and controls the rear-stage loop to power the system of the electronic device based on the first working parameter and the second working parameter. The present disclosure realizes that the power of two power supplies is added or the power of one power supply is distributed to supply the system by using one battery charging power management chip by setting the front-stage loop to include two sub-loops, thereby reducing the cost.

Description

Technical Field

[0001] The present disclosure relates to the technical field of power supply for electronic equipment, and in particular to a power supply device for electronic equipment, electronic equipment, and a power supply method. Background Art

[0002] At present, more and more laptops use two or more TYPE C USB ports for power supply. There are two main power supply control solutions for this phenomenon:

[0003] In the first solution, when only one battery charging power management chip is used in the circuit, only one USB port can be powered at the same time, that is, when only one power interface is connected to the TYPE C USB 1 port or the power of the power interface connected to the TYPE C USB 1 port is greater than the power interface connected to the TYPE C USB 2 port, the protocol port turns on the power at the TYPE C USB 1 port and turns off the power at the TYPE C USB 2 port. Only the power at the TYPE C USB 1 port is converted by the limited DC voltage (Narrow Voltage Direct Current, NVDC) battery management chip to power the system. However, the output characteristics of different power supplies are different. If the output is directly connected, the high voltage will flow back to the low voltage power supply, and the power supply with good output characteristics is prone to overload, which will cause abnormalities. In addition, as the system power demand increases, the size of the parts required in the circuit also increases.

[0004] The second solution is to use two battery charging power management chips in the circuit, which can realize the power addition of the two power supplies to power the system at the same time. However, using two battery charging power management chips makes the battery charging and discharging control complicated, with many parts and high cost. Summary of the invention

[0005] In view of this, an object of the embodiments of the present disclosure is to provide a power supply device for an electronic device, an electronic device and a power supply method, which can solve the problems of current backflow, excessive component size and high cost in the prior art.

[0006] In a first aspect, an embodiment of the present disclosure provides a power supply device for an electronic device, comprising a battery charging power management chip, the battery charging power management chip comprising a front-stage loop and a rear-stage loop, the front-stage loop comprising a first sub-loop and a second sub-loop, the first sub-loop, the second sub-loop and the rear-stage loop are all connected to the battery charging power management chip, the first sub-loop is connected to a first power supply, and the second sub-loop is connected to a second power supply;

[0007] The battery charging power management chip determines a first operating parameter of the first sub-loop based on the first power supply, and determines a second operating parameter of the second sub-loop based on the second power supply; and controls the subsequent loop to power the system of the electronic device based on the first operating parameter and the second operating parameter.

[0008] In a possible implementation manner, the power supply device further includes a connectivity switch, a protocol port, and a controller; the connectivity switch is respectively connected to the controller, the first power supply, the second power supply, the first sub-loop, and the second sub-loop, the protocol port is respectively connected to the controller, the first power supply, and the second power supply, and the controller is connected to the battery charging power management chip;

[0009] The protocol port reads first attribute information of the first power supply and second attribute information of the second power supply, and transmits the first attribute information and the second attribute information to the controller;

[0010] The controller controls the connection switch to be turned off / on based on the first attribute information and the second attribute information.

[0011] In a possible implementation, it further includes:

[0012] The protocol port determines the power supply capabilities of the first power supply and the second power supply based on the first attribute information and the second attribute information;

[0013] When both the first power supply and the second power supply have power supply capabilities, the controller controls the connectivity switch to disconnect; sets a first input current of the first sub-loop and a second input current of the second sub-loop based on the first attribute information and the second attribute information; wherein the first input current is less than a first preset current, and the second input current is less than the second preset current, the first preset current is the maximum input current allowed in the overcurrent protection of the first power supply, and the second preset current is the maximum input current allowed in the overcurrent protection of the second power supply.

[0014] In a possible implementation, it further includes:

[0015] If the first input current is equal to the first preset current and the second input current is equal to the second preset current, the controller controls to reduce the first input current and the second input current and controls the subsequent loop to power the system.

[0016] In a possible implementation, it further includes:

[0017] In the case where the first power supply or the second power supply has power supply capability, the controller determines the difference between the output power of the power supply with power supply capability and the preset power, wherein the preset power is the maximum power required by the system;

[0018] When the output power of the power supply with power supply capability is greater than the preset power, the controller controls the connection switch to be turned on, and controls the first input current and the second input current to be 1 / 2 of the preset current corresponding to the power supply with power supply capability.

[0019] In a possible implementation, it further includes:

[0020] When the output power of the power supply with power supply capability is less than the preset power, the controller controls the connection switch to be disconnected, controls the first input current to be less than or equal to the first preset current / controls the second input current to be less than or equal to the second preset current.

[0021] In a possible implementation manner, the first sub-loop, the second sub-loop, and the subsequent loop each include two metal oxide semiconductor field effect transistors.

[0022] In a possible implementation manner, the first sub-loop is connected to the subsequent loop via a first inductor, and the second sub-loop is connected to the subsequent loop via a second inductor.

[0023] On the other hand, an embodiment of the present disclosure further provides an electronic device, which includes any of the power supply devices described above.

[0024] In a possible implementation, the power supply device supplies power to a system of the electronic device.

[0025] On the other hand, the embodiment of the present disclosure further provides a power supply method applied to the above power supply device, including:

[0026] The battery charging power management chip determines a first operating parameter of the first sub-loop based on the first power supply, and determines a second operating parameter of the second sub-loop based on the second power supply; and controls the subsequent loop to power the system of the electronic device based on the first operating parameter and the second operating parameter.

[0027] The disclosed embodiment arranges a front-stage loop in a battery charging power management chip to include two sub-loops, namely a first sub-loop and a second sub-loop, wherein the first sub-loop and the second sub-loop are respectively connected to a power supply device, and the first sub-loop and the second sub-loop are both connected to a rear-stage loop, thereby converting different input voltages of the two power supply devices into the same output voltage, thereby making the output characteristics of the two power supply devices consistent; and by setting the working parameters of the first sub-loop and the second sub-loop, controlling the common output of the first sub-loop and the second sub-loop, thereby realizing a power addition supply system for the two power supply devices; when a high-power power supply is connected, the power of the power supply can be jointly borne by the first sub-loop and the second sub-loop, that is, the power of the high-power power supply is distributed to the first sub-loop and the second sub-loop, and then supplied to the system, thereby solving the problem of excessive temperature of parts, thereby being able to use smaller parts, which is conducive to product miniaturization design and reduces costs.

[0028] In order to make the above-mentioned objectives, features and advantages of the present disclosure more obvious and easy to understand, preferred embodiments are specifically cited below and described in detail with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the present disclosure or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0030] Figure 1 A circuit diagram of a power supply device provided by the present disclosure is shown;

[0031] Figure 2 A circuit diagram of another power supply device provided by the present disclosure is shown;

[0032] Figure 3 A circuit diagram of another power supply device provided by the present disclosure is shown;

[0033] Figure 4 A circuit diagram of another power supply device provided by the present disclosure is shown;

[0034] Figure 5 The internal circuit diagram of the battery charging power management chip provided by the present disclosure is shown.

[0035] Figure Number:

[0036] 1-battery charging power management chip; 11-front stage loop; 111-first sub-loop; 112-second sub-loop; 12-back stage loop; 2-first inductor; 3-second inductor; 4-connection switch; 5-protocol port; 6-controller; 7-first power switch; 8-second power switch. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solution and advantages of the present disclosure clearer, the technical solution of the present disclosure will be clearly and completely described below in conjunction with the drawings of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, rather than all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0038] Unless otherwise defined, the technical terms or scientific terms used in the present disclosure should be understood by people with ordinary skills in the field to which the present disclosure belongs. The "first", "second" and similar words used in the present disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0039] In order to keep the following description of the present disclosure clear and concise, the present disclosure omits detailed descriptions of known functions and known components. Next, the power supply device for electronic equipment provided by the present disclosure is specifically described.

[0040] The present disclosure provides a power supply device for an electronic device, which includes a battery charging power management chip 1, the battery charging power management chip 1 includes a front-stage loop 11 and a rear-stage loop 12, the front-stage loop 11 includes a first sub-loop 111 and a second sub-loop 112, the first sub-loop 111, the second sub-loop 112 and the rear-stage loop 12 are all connected to the manager of the battery charging power management chip 1, the first sub-loop 111 is connected to a first power supply, and the second sub-loop 112 is connected to a second power supply. Specifically, refer to Figure 1The structural schematic diagram of the power supply device shown in the figure, the first sub-loop 111, the second sub-loop 112 and the post-stage loop 12 all include two Metal-Oxide-Semiconductor Field-Effect Transistor (MOSFET), the first sub-loop 111 includes a first MOSFET Q1 and a second MOSFET Q2, the second sub-loop 112 includes a third MOSFET Q3 and a fourth MOSFET Q4, the post-stage loop 12 includes a fifth MOSFET Q5 and a sixth MOSFET Q6, and the first sub-loop 111 is connected to the post-stage loop 12 through a first inductor 2, and the second sub-loop 112 is connected to the post-stage loop 12 through a second inductor 3. The disclosed embodiment sets a common rear-stage loop 12 for the first sub-loop and the second sub-loop, and controls the first sub-loop and the second sub-loop respectively, such as setting input voltage, input current, etc. respectively, so that when the first sub-loop and the second sub-loop are connected to different power supplies, they switch to BUCK (step-down) mode to control the output voltages of the different power supplies to be the same, that is, to achieve the purpose of achieving consistent output characteristics of different power supplies.

[0041] The battery charging power management chip 1 determines the first operating parameter of the first sub-loop 111 based on the first power supply, and determines the second operating parameter of the second sub-loop 112 based on the second power supply; and controls the subsequent loop 12 to power the system of the electronic device based on the first operating parameter and the second operating parameter. Here, the battery charging power management chip 1 can obtain the attribute parameters of the first power supply and the second power supply, and then determine the first operating parameter of the first sub-loop 111 and the second operating parameter of the second sub-loop 112 based on the attribute parameters of the first power supply and the attribute parameters of the second power supply.

[0042] Continue to refer to Figure 1 The power supply device of the embodiment of the present disclosure also includes a connection switch 4, a protocol port 5 and a controller 6; the connection switch 4 is respectively connected to the controller 6, the first power supply, the second power supply, the first sub-loop 111 and the second sub-loop 112, and by controlling the conduction and disconnection of the connection switch, the first power supply and / or the second power supply supplies power to the system of the electronic device.

[0043] The protocol port 5 is connected to the controller 6, the first power supply, and the second power supply respectively, and the protocol port 5 reads the first attribute information of the first power supply and the second attribute information of the second power supply, and the controller 6 is connected to the battery charging power management chip 1, so that the protocol port 5 transmits the first attribute information and the second attribute information to the controller 6. The protocol port 5 obtains the first attribute information and the second attribute information through the channel configuration signal pins CC1 and CC2, including power supply functions such as output voltage, output current, and power supply power. In actual use, when the first power supply and the second power supply are connected to the USB Type-C port, the protocol port 5 communicates with the first power supply and the second power supply through CC1 and CC2 respectively, and obtains the first attribute information of the first power supply and the second attribute information of the second power supply.

[0044] After receiving the first attribute information and the second attribute information transmitted by the protocol port 5 , the controller 6 controls the connection switch 4 to be turned off / on based on the first attribute information and the second attribute information.

[0045] Furthermore, the protocol port 5 determines the power supply capacity of the first power supply and the second power supply based on the first attribute information and the second attribute information to determine whether the power supply capacity of the first power supply and the second power supply has the power supply capacity to power the system of the electronic device, wherein the protocol port 5 will also obtain the attribute information of the system of the electronic device, such as the maximum input current, the overcurrent protection point, etc. Optionally, the attribute information of the system of the electronic device can also be pre-stored in the controller 6.

[0046] In a specific implementation, when the protocol port 5 determines that both the first power supply and the second power supply have power supply capabilities, that is, the output voltage lower limit and upper limit and output power lower limit of the first power supply and the second power supply meet the system requirements of the electronic device, the result that both the first power supply and the second power supply have power supply capabilities and the first attribute information and the second attribute information are transmitted to the controller 6, and the controller 6 controls the connection switch 4 to be disconnected after receiving the result, so that both the first power supply and the second power supply are powered. At this time, the controller 6 sets the first input current of the first sub-loop 111 and the second input current of the second sub-loop 112 based on the first attribute information and the second attribute information; wherein the first input current is less than the first preset current, the second input current is less than the second preset current, the first preset current is the maximum input current allowed in the overcurrent protection of the first power supply, and the second preset current is the maximum input current allowed in the overcurrent protection of the second power supply, so as to avoid the first input current exceeding the first preset current and / or the second input current exceeding the second preset current to cause damage to the electronic device.

[0047] Reference Figure 2 A circuit diagram of a power supply device is shown, wherein Type C USB1 is connected to a 90W first power supply, and Type C USB2 is connected to a 65W second power supply. When it is determined that both the first power supply and the second power supply have power supply capabilities, the controller EC controls the connection switch switch to be disconnected. Afterwards, the first power supply and the second power supply are adjusted to output a voltage of 20V based on the system voltage required by the electronic device through the protocol port PD. In actual applications, there may be a certain difference in the output voltage of the first power supply and the second power supply, which can be ignored. Afterwards, the controller EC sets the maximum input current of the first sub-loop Loop_A_1 to 4.2A, and the maximum input current of the second sub-loop Loop_A_2 to 3.1A. If the battery voltage used by the electronic device is 12V, the operating mode of the first sub-loop Loop_A_1 and the second sub-loop Loop_A_2 is controlled to be BUCK (step-down) mode, so that the output voltage is 12V, and the output can reach about 146W, achieving the purpose of power addition. That is to say, when two power supplies are connected, the power of the two power supplies is added through the two sub-loops included in the front-stage loop in the battery charging power management chip, which is relatively low in cost.

[0048] Among them, for Figure 2The working process of the circuit diagram of the power supply device shown is roughly as follows: at time T1, the first MOSFETQ1 is controlled to be turned on, the first power supply charges the first inductor and supplies power to the system, and the charging current is I1; at time T2, the first MOSFETQ1 is controlled to be turned off and the second MOSFETQ2 is controlled to be turned on, the first inductor discharges to the system through the second MOSFETQ2, and the discharge current is I3, and at the same time the third MOSFETQ3 is turned on, the second power supply charges the second inductor 3 and supplies power to the system, and the supply current is I2, and the current supplied to the system is I3+I2; at time T3, the third MOSFETQ3 is controlled to be turned off and the fourth MOSFETQ4 is controlled to be turned on, the second inductor 3 discharges to the system through the fourth MOSFETQ4, and the discharge current is I4, and at the same time the first MOSFETQ1 is turned on, the first power supply charges the first inductor and supplies power to the system, and the current supplied to the system is I4+I1, and the above process is repeated. Among them, I1, I2, I3 and I4 are half of the total output current, and will not generate large surges, which is relatively stable.

[0049] In actual applications, there is also a situation where the first input current is equal to the first preset current and the second input current is equal to the second preset current, that is, the battery of the current electronic device is already fully charged. At this time, the controller 6 controls the reduction of the first input current and the second input current and controls the subsequent loop 12 to power the system, that is, there is no need to power the power storage device of the electronic device, and the system of the electronic device can be directly powered.

[0050] When the protocol port 5 determines that the first power supply or the second power supply has the power supply capability, at this time, the first power supply and the second power supply may be connected, but only one power supply device has the power supply capability, or only one power supply device is connected. The protocol port 5 transmits the result and the first attribute information of the first power supply or the second attribute information of the second power supply to the controller 6.

[0051] After receiving the first attribute information or the second attribute information, the controller 6 determines the difference between the output power of the power supply with power supply capability and the preset power, wherein the preset power is the maximum power required by the system; if the output power of the power supply with power supply capability is greater than the preset power, the controller 6 controls the connection switch 4 to be turned on. At this time, in order to prevent the problem of the power supply with power supply capability backflowing to the power supply without power supply capability, the power supply device of the embodiment of the present disclosure is further provided with a first power switch 7 and a second power switch 8, the first power switch 7 is connected to the first power supply, the connection switch 4 and the protocol port 5, the second power switch 8 is connected to the second power supply, the connection switch 4 and the protocol port 5, and the protocol port 5 controls the conduction or disconnection of the first power switch 7 and the second power switch 8. Specifically, if the power supply with power supply capability is the first power supply, the controller 6 controls the connection switch 4 to be turned on while the protocol port 5 controls the second power switch 8 to be turned off. Correspondingly, if the power supply with power supply capability is the second power supply, the controller 6 controls the connection switch 4 to be turned on while the protocol port 5 controls the first power switch 7 to be turned off, thereby enabling the power supply with power supply capability to power the system of the electronic device and avoiding backflow of the power supply that does not have power supply capability.

[0052] Furthermore, the power supply with power supply capability is supplied with power through the first sub-loop 111 and the second sub-loop 112. At this time, the controller 6 controls the first input current and the second input current to be 1 / 2 of the preset current corresponding to the power supply with power supply capability, that is, the power of the power supply with power supply capability is shared by the first sub-loop and the second sub-loop, that is, the power of the high-power power supply is distributed to the first sub-loop and the second sub-loop, and then supplied to the system. There is no need to add an overall battery charging power management chip, and only smaller devices (such as the devices included in the second sub-loop) are required to achieve this, which is conducive to product miniaturization. At the same time, it solves the problem of high temperature caused by power supply through one loop.

[0053] Reference Figure 3A circuit diagram of a power supply device is shown, wherein Type C USB1 is connected to a 135W first power supply, which has power supply capability. At this time, the protocol port PD controls the second power switch Power Switch2 to be disconnected, and the controller EC controls the connection switch switch to be turned on. Afterwards, the output voltage of the first power supply is adjusted to 20V through the protocol port PD, and the controller EC sets the maximum input current of the first sub-loop Loop_A_1 and the second sub-loop Loop_A_2 to be 3.25A. If the battery voltage used by the electronic device is 12V, the working mode of the first sub-loop Loop_A_1 and the second sub-loop Loop_A_2 is controlled to be BUCK (step-down) mode, so that the output voltage is 12V, and the output power of the first sub-loop Loop_A_1 and the second sub-loop Loop_A_2 are both about 65W, and the total output is about 130W, thereby achieving the purpose of distributing the output power of a high-power power supply to two loops (power conversion circuits), and achieving the purpose of reducing the load of the loop (power conversion circuit).

[0054] In addition, if the result of determining the size between the output power of the power supply with power supply capability and the preset power is that the output power of the power supply with power supply capability is less than the preset power, at this time, the controller 6 controls the connection switch 4 to disconnect, and controls the first input current to be less than or equal to the first preset current.

[0055] Reference Figure 4 A circuit diagram of a power supply device is shown, wherein Type C USB1 is connected to a 65W first power supply, which has power supply capability. At this time, the protocol port PD controls the second power switch Power Switch2 to be disconnected, and at the same time, the controller EC controls the connection switch switch to be disconnected, and only the first sub-loop Loop_A_1 is used for power supply. Afterwards, the output of the first power supply is adjusted to a voltage of 20V through the protocol port PD, and the controller EC sets the maximum input current of the first sub-loop Loop_A_1 to 3.1A. If the battery voltage used by the electronic device is 12V, the working mode of the first sub-loop Loop_A_1 and the second sub-loop Loop_A_2 is controlled to be BUCK (step-down) mode, so that the output voltage is 12V. At this time, the output power of the first sub-loop Loop_A_1 is 62W, which can achieve the purpose of higher conversion efficiency.

[0056] like Figure 5As shown, the embodiment of the present disclosure also provides an internal circuit diagram of a battery charging power management chip, which has the following characteristics: 1. The first sub-loop Loop_A_1 controls PWM driver Logic to control HDRV_A_1 / LDRV_A_1 / BST_A_1 / SW_A_1 to drive Q1 / Q2; the second sub-loop Loop_A_2 controls PWM driver Logic to control HDRV_A_2 / LDRV_A_2 / BST_A_2 / SW_A_2 to drive Q6 / Q7; the rear-stage loop Loop_B controls PWM driver Logic to control HDRV_B / LDRV_B / BST_B / SW_B to drive Q3 / Q4; Buck / Boost / Buck&Boost power conversion is completed. 2. Control PWM driver Logic to control BAT_DRV to drive Q5 to control battery charging and discharging. 3. The first sub-loop Loop_A_1 and the second sub-loop Loop_A_2 share a post-stage loop Loop_B. The working parameters of the first sub-loop Loop_A_1 and the second sub-loop Loop_A_2 can be set respectively according to the attribute information of the power supply, so that the first sub-loop Loop_A_1 and the second sub-loop Loop_A_2 output the same voltage, and realize the conversion of the input of the two power supplies into consistent output characteristics. 4. VBUS1 and VBUS2 detect the input voltage of the first power supply and the second power supply respectively; ACP1&ACN1, ACP2&ACN2 detect the input current of the first power supply and the second power supply respectively. 5. VSYS detects the output voltage, compares it with the VSYS output voltage detection signal VSNS_SYS, and controls and adjusts the output voltage of the first sub-loop Loop_A_1 and the second sub-loop Loop_A_2 within the set working range. 6. VBAT detects the battery voltage, SRN&SRP detects the battery charge and discharge current, and compares it with VSNS_ICHG / VSNS_IDCHG to control and adjust the charge and discharge current within the set working range. 7. Set the VREF_VDPM / OTG input voltage working range, compare it with the VBUS1 and VBUS2 input voltage detection signals VSNS1_VDPM / OTG, VSNS2_VDPM / OTG, and control the first sub-loop Loop_A_1 and the second sub-loop Loop_A_2 to work within the set input voltage range. 8. Set the VREF1_IDPM and VREF2_IDPM input current working range, compare it with the VBUS1 and VBUS2 input current detection signals VSNS1_IDPM / OTG, VSNS2_IDPM / OTG, and control the first sub-loop Loop_A_1 and the second sub-loop Loop_A_2 of the circuit to work within the set input current range.

[0057] The disclosed embodiment arranges a front-stage loop in a battery charging power management chip to include two sub-loops, namely a first sub-loop and a second sub-loop, wherein the first sub-loop and the second sub-loop are respectively connected to a power supply device, and the first sub-loop and the second sub-loop are both connected to a rear-stage loop, thereby converting different input voltages of the two power supply devices into the same output voltage, thereby making the output characteristics of the two power supply devices consistent; and by setting the working parameters of the first sub-loop and the second sub-loop, controlling the common output of the first sub-loop and the second sub-loop, thereby realizing a power addition supply system for the two power supply devices; when a high-power power supply device is connected, the power of the power supply device can be jointly borne by the first sub-loop and the second sub-loop, that is, the power of the high-power power supply device is distributed to the first sub-loop and the second sub-loop, and then supplied to the system, thereby solving the problem of excessive temperature of parts, thereby being able to use smaller parts, which is conducive to product miniaturization design and reduces costs.

[0058] On the other hand, an embodiment of the present disclosure further provides an electronic device, which includes any of the power supply devices described above.

[0059] On the other hand, the embodiment of the present disclosure further provides a power supply method applied to the above-mentioned electrical device, comprising:

[0060] The battery charging power management chip determines a first operating parameter of a first sub-loop based on a first power supply, and determines a second operating parameter of a second sub-loop based on a second power supply; and controls a subsequent loop to power a system of an electronic device based on the first operating parameter and the second operating parameter.

[0061] Furthermore, the first attribute information of the first power supply and the second attribute information of the second power supply are read through the protocol port, and the first attribute information and the second attribute information are transmitted to the controller; and then the controller controls the connection switch to be disconnected / connected based on the first attribute information and the second attribute information.

[0062] The power supply method also includes: determining the power supply capabilities of the first power supply and the second power supply through the protocol port based on the first attribute information and the second attribute information; when both the first power supply and the second power supply have the power supply capabilities, controlling the connection switch to disconnect through the controller; setting the first input current of the first sub-loop and the second input current of the second sub-loop based on the first attribute information and the second attribute information; wherein the first input current is less than the first preset current, and the second input current is less than the second preset current, the first preset current is the maximum input current allowed in the overcurrent protection of the first power supply, and the second preset current is the maximum input current allowed in the overcurrent protection of the second power supply.

[0063] If the first input current is equal to the first preset current and the second input current is equal to the second preset current, the controller controls to reduce the first input current and the second input current and controls the subsequent loop to power the system.

[0064] When the first power supply or the second power supply has the power supply capability, the controller determines the difference between the output power of the power supply with the power supply capability and the preset power, wherein the preset power is the maximum power required by the system; when the output power of the power supply with the power supply capability is greater than the preset power, the controller controls the connection switch to be turned on, and controls the first input current and the second input current to be 1 / 2 of the preset current corresponding to the power supply with the power supply capability. When the output power of the power supply with the power supply capability is less than the preset power, the controller controls the connection switch to be turned off, and controls the first input current to be less than or equal to the first preset current / controls the second input current to be less than or equal to the second preset current.

[0065] The flow chart and block diagram in the accompanying drawings illustrate the possible architecture, function and operation of the system, method and computer program product according to various embodiments of the present disclosure. In this regard, each square box in the flow chart or block diagram can represent a module, a program segment or a part of a code, and the module, the program segment or a part of the code contains one or more executable instructions for realizing the specified logical function. It should also be noted that in some implementations as replacements, the functions marked in the square box can also occur in a sequence different from that marked in the accompanying drawings. For example, two square boxes represented in succession can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each square box in the block diagram and / or flow chart, and the combination of the square boxes in the block diagram and / or flow chart can be implemented with a dedicated hardware-based system that performs a specified function or operation, or can be implemented with a combination of dedicated hardware and computer instructions.

[0066] The above description is only a preferred embodiment of the present disclosure and an explanation of the technical principles used. Those skilled in the art should understand that the scope of disclosure involved in the present disclosure is not limited to the technical solutions formed by a specific combination of the above technical features, but should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the above disclosed concept. For example, the above features are replaced with the technical features with similar functions disclosed in the present disclosure (but not limited to) by each other.

[0067] In addition, although each operation is described in a specific order, this should not be understood as requiring these operations to be performed in the specific order shown or in a sequential order. Under certain circumstances, multitasking and parallel processing may be advantageous. Similarly, although some specific implementation details are included in the above discussion, these should not be interpreted as limiting the scope of the present disclosure. Some features described in the context of a separate embodiment can also be implemented in a single embodiment in combination. On the contrary, the various features described in the context of a single embodiment can also be implemented in multiple embodiments individually or in any suitable sub-combination mode.

[0068] Although the subject matter has been described in language specific to structural features and / or methodological logical actions, it should be understood that the subject matter defined in the appended claims is not necessarily limited to the specific features or actions described above. On the contrary, the specific features and actions described above are merely example forms of implementing the claims.

[0069] Multiple embodiments of the present disclosure are described in detail above, but the present disclosure is not limited to these specific embodiments. Technical personnel in the field can make various variations and modifications to the embodiments based on the concepts of the present disclosure, and these variations and modifications should all fall within the scope of protection required by the present disclosure.

Claims

1. A power supply device for an electronic device, characterized in that: The invention comprises a battery charging power management chip and a connection switch, wherein the battery charging power management chip comprises a manager, a front-stage loop and a rear-stage loop, wherein the front-stage loop comprises a first sub-loop and a second sub-loop, wherein the first sub-loop, the second sub-loop and the rear-stage loop are all connected to the manager, the first sub-loop is connected to a first power supply, and the second sub-loop is connected to a second power supply; The battery charging power management chip determines a first operating parameter of the first sub-loop based on the first power supply, and determines a second operating parameter of the second sub-loop based on the second power supply; and controlling the subsequent loop to power a system of the electronic device based on the first operating parameter and the second operating parameter; Among them, the first sub-loop and the second sub-loop are both connected to the post-stage loop to convert different input voltages of the first power supply and the second power supply into the same output voltage; the first sub-loop and the second sub-loop are power conversion circuits, which realize switching of the following three situations: jointly bearing the power input by the first power supply, jointly bearing the power input by the second power supply, and jointly bearing the power input by the first power supply and the second power supply; one end of the connecting switch is connected to the connection point of the first power supply and the first sub-loop, and the other end is connected to the connection point of the second power supply and the second sub-loop, and by controlling the conduction and disconnection of the connecting switch, the first power supply and / or the second power supply supplies power the system of the electronic device.

2. The power supply device according to claim 1, characterized in that: It also includes a protocol port and a controller; the connectivity switch is respectively connected to the controller, the first power supply, the second power supply, the first sub-loop and the second sub-loop, the protocol port is respectively connected to the controller, the first power supply, the second power supply, and the controller is connected to the battery charging power management chip; The protocol port reads first attribute information of the first power supply and second attribute information of the second power supply, determines power supply capabilities of the first power supply and the second power supply, and transmits the result that both the first power supply and the second power supply have power supply capabilities as well as the first attribute information and the second attribute information to the controller; The controller controls the connectivity switch to be disconnected / connected based on the first attribute information, the second attribute information and the power supply capability result; wherein, when both the first power supply and the second power supply have power supply capability, the controller controls the connectivity switch to be disconnected; when only one power supply has power supply capability and the output power of the power supply with power supply capability is greater than a preset power, the controller controls the connectivity switch to be turned on; when only one power supply has power supply capability and the output power of the power supply with power supply capability is less than the preset power, the controller controls the connectivity switch to be disconnected; the power supply capability is used to characterize that the output voltage lower limit and upper limit and the output power lower limit of the first power supply and the second power supply meet the system requirements of the electronic device.

3. The power supply device according to claim 2, characterized in that: Also includes: The protocol port determines the power supply capabilities of the first power supply and the second power supply based on the first attribute information and the second attribute information; When both the first power supply and the second power supply have power supply capability, the controller controls the connection switch to be disconnected; The first input current of the first sub-loop and the second input current of the second sub-loop are set based on the first attribute information and the second attribute information; wherein the first input current is less than a first preset current, the second input current is less than a second preset current, the first preset current is the maximum input current allowed in the overcurrent protection of the first power supply, and the second preset current is the maximum input current allowed in the overcurrent protection of the second power supply.

4. The power supply device according to claim 3, characterized in that: Also includes: If the first input current is equal to the first preset current and the second input current is equal to the second preset current, the controller controls to reduce the first input current and the second input current and controls the subsequent loop to power the system.

5. The power supply device according to claim 3, characterized in that: Also includes: In the case where the first power supply or the second power supply has power supply capability, the controller determines the difference between the output power of the power supply with power supply capability and the preset power, wherein the preset power is the maximum power required by the system; When the output power of the power supply with power supply capability is greater than the preset power, the controller controls the connection switch to be turned on, and controls the first input current and the second input current to be 1 / 2 of the preset current corresponding to the power supply with power supply capability.

6. The power supply device according to claim 5, characterized in that: Also includes: When the output power of the power supply with power supply capability is less than the preset power, the controller controls the connection switch to be disconnected, controls the first input current to be less than or equal to the first preset current / controls the second input current to be less than or equal to the second preset current.

7. The power supply device according to claim 1, characterized in that: The first sub-loop, the second sub-loop and the subsequent loop each include two metal oxide semiconductor field effect transistors.

8. The power supply device according to claim 1, characterized in that: The first sub-loop is connected to the subsequent loop via a first inductor, and the second sub-loop is connected to the subsequent loop via a second inductor.

9. An electronic device, characterized in that: The invention comprises a power supply device as described in any one of claims 1 to 8.

10. A power supply method applied to the power supply device according to any one of claims 1 to 8, characterized in that: include: The battery charging power management chip determines a first operating parameter of the first sub-loop based on the first power supply, and determines a second operating parameter of the second sub-loop based on the second power supply; And based on the first working parameter and the second working parameter, the subsequent loop is controlled to supply power to the system of the electronic device.

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