Power supply management circuit and electronic device

Abstract

The embodiment of the application discloses a power supply management circuit and electronic equipment, and belongs to the technical field of power electronics. The power supply management circuit comprises: a power management module, which is electrically connected with a power receiving end of an electronic device; a first power supply module, which is electrically connected with a built-in battery, the power management module and a battery interface for connecting a detachable battery, and is configured to be turned on when the voltage of the battery interface is lower than a preset threshold, so that the built-in battery supplies power to the power receiving end; a second power supply module, which is electrically connected with the battery interface; an adjusting module, which is electrically connected with the second power supply module and the power management module; and a control module, which is electrically connected with the adjusting module, the built-in battery and the battery interface, and is configured to control the detachable battery to supply power to the power receiving end, or to control the detachable battery to supply power to the power receiving end and the built-in battery simultaneously. The power supply management circuit provided by the embodiment of the application can prolong the battery life and avoid power failure during battery replacement.

Description

TECHNICAL FIELD

[0001] Embodiments of the present application relate to the technical field of power electronics, and particularly relate to a power supply management circuit and an electronic device. BACKGROUND

[0002] AI (Artificial Intelligence) glasses and AR (Augmented Reality) glasses are receiving more and more attention. These smart glasses can achieve complex computing, environmental perception, and virtual-real fusion visual experience. However, these powerful functions also bring significant power consumption challenges, making device endurance a key bottleneck affecting user experience and product usability.

[0003] At present, in order to solve the problem of short device endurance time caused by single battery power supply scheme, a double battery power supply scheme of connecting a built-in battery and a detachable battery in series or parallel is proposed in the related art, so that the user can replace another full battery after the power of the detachable battery is consumed, and continue to use it. However, this double battery power supply scheme requires at least two detachable batteries, and may cause device power failure during battery replacement. SUMMARY

[0004] The main purpose of the embodiments of the present application is to provide a power supply management circuit and an electronic device, which aims to solve the technical problem of how to prolong the device endurance time while avoiding power failure during battery replacement.

[0005] To achieve the above-mentioned purpose, the embodiments of the present application provide a power supply management circuit, which comprises:

[0006] a power management module, a first end of the power management module being electrically connected with a power receiving end of an electronic device;

[0007] a first power supply module, a first end of the first power supply module being electrically connected with a built-in battery, a second end of the first power supply module being electrically connected with a second end of the power management module, a third end of the first power supply module being electrically connected with a battery interface for connecting a detachable battery, a fourth end of the first power supply module being grounded, the first power supply module being configured to be turned on when a voltage of the battery interface is lower than a preset threshold, so that the built-in battery supplies power to the power receiving end through the power management module;

[0008] a second power supply module, a first end of the second power supply module being electrically connected with the battery interface, a second end of the second power supply module being grounded;

[0009] a regulating module, a first end of the regulating module is electrically connected with a third end of the second power supply module, a second end and a third end of the regulating module are electrically connected with a third end and a fourth end of the power management module respectively;

[0010] a control module, the control module is electrically connected with a controlled end of the regulating module, the built-in battery and the battery interface respectively, the control module is configured to adjust on-off state of the regulating module according to the electric quantity of the detachable battery and the electric quantity of the built-in battery, so that the detachable battery supplies power to the power receiving end through the power management module, or the detachable battery supplies power to the power receiving end and the built-in battery through the power management module.

[0011] In an embodiment, the first power supply module comprises:

[0012] a first switch unit, a first end of the first switch unit is electrically connected with the built-in battery, a second end of the first switch unit is electrically connected with a second end of the power management module;

[0013] a first voltage dividing unit, a first end of the first voltage dividing unit is electrically connected with the battery interface, a second end of the first voltage dividing unit is electrically connected with a controlled end of the first switch unit, a third end of the first voltage dividing unit is grounded.

[0014] In an embodiment, the first switch unit comprises:

[0015] a first PMOS tube, a source of the first PMOS tube is electrically connected with the built-in battery, a drain of the first PMOS tube is electrically connected with a second end of the power management module, a gate of the first PMOS tube is electrically connected with a second end of the first voltage dividing unit.

[0016] In an embodiment, the first voltage dividing unit comprises:

[0017] a first resistor, a first end of the first resistor is electrically connected with the battery interface, a second end of the first resistor is electrically connected with a controlled end of the first switch unit;

[0018] a second resistor, a first end of the second resistor is electrically connected with a second end of the first resistor, a second end of the second resistor is grounded.

[0019] In an embodiment, the second power supply module comprises:

[0020] a second switch unit, a first end of the second switch unit is electrically connected with the battery interface, a second end of the second switch unit is electrically connected with a first end of the regulating module;

[0021] a second voltage dividing unit, a first end of the second voltage dividing unit being electrically connected with the first end of the second switch unit, and a second end of the second voltage dividing unit being grounded;

[0022] a third switch unit, a controlled end of the third switch unit being electrically connected with the third end of the second voltage dividing unit, a first end of the third switch unit being electrically connected with the controlled end of the second switch unit, and a second end of the third switch unit being grounded.

[0023] In an embodiment, the second switch unit comprises:

[0024] a second PMOS, a source of the second PMOS being electrically connected with the battery interface, a drain of the second PMOS being electrically connected with the first end of the regulating module, and a gate of the second PMOS being electrically connected with the first end of the third switch unit.

[0025] In an embodiment, the second voltage dividing unit comprises:

[0026] a third resistor, a first end of the third resistor being electrically connected with the battery interface, and a second end of the third resistor being electrically connected with the controlled end of the third switch unit;

[0027] a fourth resistor, a first end of the fourth resistor being electrically connected with the second end of the third resistor, and a second end of the fourth resistor being grounded.

[0028] In an embodiment, the third switch unit comprises:

[0029] a triode, a base of the triode being electrically connected with the third end of the second voltage dividing unit, a collector of the triode being electrically connected with the controlled end of the second switch unit, and an emitter of the triode being grounded.

[0030] In an embodiment, the regulating module comprises:

[0031] a fourth switch unit, a first end of the fourth switch unit being electrically connected with the third end of the second power supply module, a second end of the fourth switch unit being electrically connected with the third end of the power management module, and a controlled end of the fourth switch unit being electrically connected with the control module;

[0032] a boost unit, a first end of the boost unit being electrically connected with the third end of the second power supply module, a second end of the boost unit being electrically connected with the fourth end of the power management module, and a controlled end of the boost unit being electrically connected with the control module.

[0033] In addition, to achieve the above object, the embodiment of the present application further provides an electronic device, which comprises the power supply management circuit as described above.

[0034] The embodiment of the present application provides a power supply management circuit and electronic equipment, which overcomes the defects of the double-battery power supply scheme in the prior art, i.e., the need to configure an additional backup battery and the possible power failure in the process of replacing the battery. The power supply management circuit comprises: a power management module, a first end of the power management module being electrically connected with a power receiving end of the electronic equipment; a first power supply module, a first end of the first power supply module being electrically connected with a built-in battery, a second end of the first power supply module being electrically connected with a second end of the power management module, a third end of the first power supply module being electrically connected with a battery interface for connecting a detachable battery, and a fourth end of the first power supply module being grounded, the first power supply module being configured to be turned on when the voltage of the battery interface is lower than a preset threshold value, so that the built-in battery supplies power to the power receiving end through the power management module; a second power supply module, a first end of the second power supply module being electrically connected with the battery interface, and a second end of the second power supply module being grounded; an adjusting module, a first end of the adjusting module being electrically connected with a third end of the second power supply module, and a second end and a third end of the adjusting module being electrically connected with a third end and a fourth end of the power management module, respectively; and a control module, the control module being electrically connected with the adjusting module, the built-in battery and the battery interface, respectively, and the control module being configured to adjust the on-off state of the adjusting module according to the power of the detachable battery and the power of the built-in battery, so that the detachable battery supplies power to the power receiving end through the power management module, or so that the detachable battery supplies power to the power receiving end and the built-in battery through the power management module.

[0035] The power supply management circuit provided by the embodiment of the present application supports multiple power supply modes, can flexibly select power supply through the detachable battery and / or the built-in battery through the power management module to the power receiving end, can effectively prolong the battery life without preparing an additional backup battery, and can also avoid power failure in the process of replacing the battery. Specifically, the power supply management circuit can supply power to the power receiving end through the detachable battery through the power management module when the power of the detachable battery is sufficient, prolong the battery life by taking the built-in battery as a backup power supply when the power of the detachable battery is insufficient, supply power to the power receiving end through the detachable battery through the power management module and charge the built-in battery at the same time when the power of the detachable battery is sufficient and the power of the built-in battery is insufficient, and supply power to the power receiving end through the built-in battery through the power management module when the detachable battery needs to be removed for charging, thereby avoiding power failure in the process of replacing the battery. BRIEF DESCRIPTION OF DRAWINGS

[0036] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the related art, the drawings needed to be used in the embodiments or the related art description will be briefly introduced. Obviously, the drawings in the following description are only some of the embodiments of the present application, and for those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without any creative effort.

[0037] Figure 1 A structural schematic diagram of a power supply management circuit provided by an embodiment of the present application;

[0038] Figure 2 A structural schematic diagram of a first power supply module in a power supply management circuit provided by an embodiment of the present application;

[0039] Figure 3 A structural schematic diagram of a first switch unit in a power supply management circuit provided by an embodiment of the present application;

[0040] Figure 4 A structural schematic diagram of a first voltage dividing unit in a power supply management circuit provided by an embodiment of the present application;

[0041] Figure 5 A structural schematic diagram of a second power supply module in a power supply management circuit provided by an embodiment of the present application;

[0042] Figure 6 A structural schematic diagram of a second switch unit in a power supply management circuit provided by an embodiment of the present application;

[0043] Figure 7 A structural schematic diagram of a second voltage dividing unit in a power supply management circuit provided by an embodiment of the present application;

[0044] Figure 8 A structural schematic diagram of a third switch unit in a power supply management circuit provided by an embodiment of the present application;

[0045] Figure 9 A structural schematic diagram of an adjusting module in a power supply management circuit provided by an embodiment of the present application;

[0046] Figure 10 A structural schematic diagram of a power supply management circuit provided by an embodiment of the present application in the case of connecting a charging power supply.

[0047] The implementation, functional features and advantages of the embodiments of the present application will be further described with reference to the drawings.

[0048] Explanation of the drawing numbers:

[0049] 01, power management module; 10, first power supply module; 20, second power supply module; 30, adjustment module; 40, control module; VSYS, system voltage; VBAT1, first battery voltage; VBAT2, second battery voltage; 11, first switch unit; 12, first voltage division unit; Q1, first PMOS tube; R1, first resistor; R2, second resistor; 21, second switch unit; 22, second voltage division unit; 23, third switch unit; Q2, second PMOS tube; R3, third resistor; R4, fourth resistor; Q3, triode; 31, fourth switch unit; 32, voltage boosting unit; VBUS, charging voltage. DETAILED DESCRIPTION

[0050] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the embodiments of the present application.

[0051] The power supply management circuit and the electronic device provided by the embodiments of the present application are specifically described by the following embodiments. First, the power supply management circuit in the embodiments of the present application is described.

[0052] The embodiments of the present application provide a power supply management circuit, which is described with reference to Figure 1 , Figure 1 A structural schematic diagram of a power supply management circuit provided by an embodiment of the present application is shown in the figure. The power supply management circuit comprises:

[0053] The power management module 01 is electrically connected to the power receiving end of the electronic device at the first end of the power management module 01.

[0054] The first power supply module 10 is electrically connected to the built-in battery at the first end of the first power supply module 10. The second end of the first power supply module 10 is electrically connected to the second end of the power management module 01. The third end of the first power supply module 10 is electrically connected to the battery interface for connecting the detachable battery. The fourth end of the first power supply module 10 is grounded. The first power supply module 10 is configured to be turned on when the voltage of the battery interface is lower than the preset threshold value, so that the built-in battery supplies power to the power receiving end through the power management module 01.

[0055] The second power supply module 20 is electrically connected to the battery interface at the first end of the second power supply module 20. The second end of the second power supply module 20 is grounded.

[0056] The adjusting module 30 has a first end electrically connected to the third end of the second power supply module 20, and a second end and a third end electrically connected to the third end and the fourth end of the power management module 01 respectively;

[0057] The control module 40 is electrically connected to the controlled end of the adjusting module 30, the built-in battery and the battery interface respectively, and is configured to adjust the on-off state of the adjusting module 30 according to the power of the detachable battery and the power of the built-in battery, so that the detachable battery supplies power to the power receiving end through the power management module 01, or the detachable battery supplies power to the power receiving end and the built-in battery through the power management module 01.

[0058] In this embodiment, the power supply management circuit can be applied to an electronic device with a built-in battery, a battery interface for connecting a detachable battery, and a power receiving end.

[0059] In this embodiment, the power management module 01 can include a voltage conversion function, which can convert the connected voltage to provide a system voltage VSYS to the power receiving end of the electronic device, or a voltage that can charge the built-in battery.

[0060] In this embodiment, the first power supply module 10 can determine whether to output the first battery voltage VBAT1 provided by the built-in battery to the power management module 01 according to the second battery voltage VBAT2 provided by the detachable battery at the battery interface. As an example, in the case that the second battery voltage VBAT2 is too low and the power management module 01 cannot provide a stable system voltage VSYS to the power receiving end based on the second battery voltage VBAT2 alone, the path for transmitting the first battery voltage VBAT1 in the first power supply module 10 will be turned on, so that the first battery voltage VBAT1 can be output to the power management module 01.

[0061] In this embodiment, the second power supply module 20 can determine whether to output the second battery voltage VBAT2 to the adjusting module 30 according to the second battery voltage VBAT2. As an example, as long as the second battery voltage VBAT2 can be converted into a stable system voltage VSYS when provided to the power management module 01, the path for transmitting the second battery voltage VBAT2 in the second power supply module 20 will be turned on, and the second battery voltage VBAT2 can be output to the adjusting module 30.

[0062] In this embodiment, the on-off of the adjusting module 30 determines whether the second battery voltage VBAT2 can be provided to the power management module 01, and the on-off state of the adjusting module 30 is determined by the control module 40.

[0063] In the embodiment, the control module 40 can be regarded as a master control chip of the electronic device, such as an MCU (Microcontroller Unit), a CPU (Central Process Unit), etc. The control module 40 can detect the power of the built-in battery and the first battery voltage VBAT1 provided by the built-in battery in real time, and can also detect the power of the detachable battery connected to the battery interface and the second battery voltage VBAT2 provided by the detachable battery in real time. Based on the power and voltage of the two batteries, how to adjust the on-off state of the adjusting module 30 is determined, so as to determine the power supply mode of the power supply management circuit.

[0064] As an example, when the control module 40 detects that the power of the detachable battery is sufficient, one path in the adjusting module 30 is controlled to be turned on, so that the second battery voltage VBAT2 can be provided to the power management module 01, and a stable system voltage VSYS is provided to the power receiving end. At this time, the second battery voltage VBAT2 is high, and the path for transmitting the first battery voltage VBAT1 in the first power supply module 10 is not turned on. The built-in battery can be used as a backup power supply, thereby prolonging the endurance time when the power of the detachable battery is insufficient. The sufficient power can be higher than 50%, 60%, or 66%, etc. The specific determination value can be flexibly adjusted according to the actual application, which is not limited in the embodiment.

[0065] As an example, when the control module 40 detects that the power of the detachable battery is sufficient and the power of the built-in battery is insufficient, another path in the adjusting module 30 can be controlled to be turned on, so that the second battery voltage VBAT2 can not only be provided to the power management module 01 to provide a stable system voltage VSYS to the power receiving end, but also can be charged to the built-in battery through the power management module 01. In order to prepare for the power failure phenomenon in advance during the replacement of the battery, wherein the insufficient power can be lower than 10%, 8%, 5%, etc. The specific determination value can be flexibly adjusted according to the actual application, which is not limited in the embodiment.

[0066] As an example, when the control module 40 detects that the power of the detachable battery is insufficient and needs to be removed for charging, the adjusting module 30 can be controlled to be turned off. At this time, the second battery voltage VBAT2 at the battery interface is low or equal to zero. The path for transmitting the first battery voltage VBAT1 in the first power supply module 10 is turned on, so that the first battery voltage VBAT1 can be output to the power management module 01 to provide a stable system voltage VSYS to the power receiving end, thereby avoiding the power failure phenomenon during the replacement of the battery.

[0067] Referring to Figure 2 In some possible embodiments, the first power supply module 10 includes:

[0068] The first end of the first switch unit 11 is electrically connected with the built-in battery, and the second end of the first switch unit 11 is electrically connected with the second end of the power management module 01.

[0069] The first end of the first voltage dividing unit 12 is electrically connected with the battery interface, the second end of the first voltage dividing unit 12 is electrically connected with the controlled end of the first switch unit 11, and the third end of the first voltage dividing unit 12 is grounded.

[0070] In this embodiment, the first end of the first switch unit 11 is as the first end of the first power supply module 10, the second end of the first switch unit 11 is as the second end of the first power supply module 10, the first end of the first voltage dividing unit 12 is as the third end of the first power supply module 10, and the third end of the first voltage dividing unit 12 is as the fourth end of the first power supply module 10.

[0071] In this embodiment, when the second battery voltage VBAT2 at the battery interface changes, the voltage provided to the controlled end of the first switch unit 11 through the first voltage dividing unit 12 also changes, and when the second battery voltage VBAT2 is lower than the preset threshold value, the first switch unit 11 is turned on, so that the first battery voltage VBAT1 output by the built-in battery can be provided to the power management module 01 through the first switch unit 11, thereby providing a stable system voltage VSYS to the powered end.

[0072] Reference Figure 3 In some possible embodiments, the first switch unit 11 includes:

[0073] The source of the first PMOS tube Q1 is electrically connected with the built-in battery, the drain of the first PMOS tube Q1 is electrically connected with the second end of the power management module 01, and the gate of the first PMOS tube Q1 is electrically connected with the second end of the first voltage dividing unit 12.

[0074] In this embodiment, the source of the first PMOS tube Q1 is as the first end of the first switch unit 11, the drain of the first PMOS tube Q1 is as the second end of the first switch unit 11, and the gate of the first PMOS tube Q1 is as the controlled end of the first switch unit 11.

[0075] In the embodiment, when the second battery voltage VBAT2 at the battery interface changes, the voltage provided to the gate of the first PMOS tube Q1 through the first voltage dividing unit 12 also changes, and when the second battery voltage VBAT2 is lower than the preset threshold value, the difference between the gate voltage and the source voltage of the first PMOS tube Q1 is less than the threshold voltage of the first PMOS tube Q1, so that the first PMOS tube Q1 is turned on, so that the first battery voltage VBAT1 output by the built-in battery can be provided to the power management module 01 through the first PMOS tube Q1, thereby providing a stable system voltage Vsys to the powered end.

[0076] It should be noted that the first PMOS tube Q1 is only an optional example of the first switching unit 11, and other types of switching tubes with the same on-off characteristics as the first PMOS tube Q1 can also be used to realize the first switching unit 11, and the present embodiment does not limit this.

[0077] Reference Figure 4 In some possible embodiments, the first voltage dividing unit 12 includes:

[0078] The first resistor R1, the first end of the first resistor R1 is electrically connected with the battery interface, and the second end of the first resistor R1 is electrically connected with the controlled end of the first switching unit 11;

[0079] The second resistor R2, the first end of the second resistor R2 is electrically connected with the second end of the first resistor R1, and the second end of the second resistor R2 is grounded.

[0080] In the embodiment, the first end of the first resistor R1 is used as the first end of the first voltage dividing unit 12, the second end of the first resistor R1 and the first end of the second resistor R2 are commonly connected as the second end of the first voltage dividing unit 12, and the second end of the second resistor R2 is used as the third end of the first voltage dividing unit 12.

[0081] In the embodiment, when the second battery voltage VBAT2 at the battery interface changes, the voltage provided to the controlled end of the first switching unit 11 through the first resistor R1 and the second resistor R2 also changes, and when the second battery voltage VBAT2 is lower than the preset threshold value, the first switching unit 11 is turned on, so that the first battery voltage VBAT1 output by the built-in battery can be provided to the power management module 01 through the first switching unit 11, thereby providing a stable system voltage Vsys to the powered end.

[0082] It should be noted that the combination of the first resistor R1 and the second resistor R2 is only an optional example of the first voltage dividing unit 12, and other components or combinations thereof with the same function as the combination of the first resistor R1 and the second resistor R2 can also be used to realize the first voltage dividing unit 12, and the present embodiment does not limit this.

[0083] Referring to Figure 5 In some possible embodiments, the second power supply module 20 comprises:

[0084] a second switch unit 21, a first end of the second switch unit 21 being electrically connected to the battery interface, and a second end of the second switch unit 21 being electrically connected to a first end of the regulating module 30;

[0085] a second voltage dividing unit 22, a first end of the second voltage dividing unit 22 being electrically connected to the first end of the second switch unit 21, and a second end of the second voltage dividing unit 22 being grounded;

[0086] a third switch unit 23, a controlled end of the third switch unit 23 being electrically connected to a third end of the second voltage dividing unit 22, a first end of the third switch unit 23 being electrically connected to a controlled end of the second switch unit 21, and a second end of the third switch unit 23 being grounded.

[0087] In the present embodiment, the first end of the second switch unit 21 and the first end of the second voltage dividing unit 22 are commonly connected as a first end of the second power supply module 20, the second end of the second voltage dividing unit 22 and the second end of the third switch unit 23 are commonly connected as a second end of the second power supply module 20, and the second end of the second switch unit 21 is a third end of the second power supply module 20.

[0088] In the present embodiment, in the case that the battery interface accesses the detachable battery, as long as the voltage provided by the second battery voltage VBAT2 of the detachable battery after being divided by the second voltage dividing unit 22 and provided to the controlled end of the third switch unit 23 can make the third switch unit 23 conductive, the second switch unit 21 can also be conductive, and the second battery voltage VBAT2 can be output to the regulating module 30 through the second switch unit 21.

[0089] Referring to Figure 6 In some possible embodiments, the second switch unit 21 comprises:

[0090] a second PMOS tube Q2, a source of the second PMOS tube Q2 being electrically connected to the battery interface, a drain of the second PMOS tube Q2 being electrically connected to the first end of the regulating module 30, and a gate of the second PMOS tube Q2 being electrically connected to the first end of the third switch unit 23.

[0091] In the present embodiment, the source of the second PMOS tube Q2 is a first end of the second switch unit 21, the drain of the second PMOS tube Q2 is a second end of the second switch unit 21, and the gate of the second PMOS tube Q2 is a controlled end of the second switch unit 21.

[0092] In the embodiment, when the detachable battery is connected to the battery interface, as long as the voltage provided by the second battery voltage VBAT2 after being divided by the second voltage dividing unit 22 and provided to the controlled end of the third switch unit 23 can make the third switch unit 23 conductive, the gate of the second PMOS tube Q2 is grounded, the difference between the gate voltage and the source voltage of the second PMOS tube Q2 is less than the threshold voltage of the second PMOS tube Q2, and thus the second PMOS tube Q2 is conductive, and the second battery voltage VBAT2 can be output to the adjustment module 30 through the second PMOS tube Q2.

[0093] It should be noted that the second PMOS tube Q2 is only an optional example of the second switch unit 21, and other types of switch tubes with the same on-off characteristics as the second PMOS tube Q2 can also be used to realize the second switch unit 21, and the embodiment does not limit this.

[0094] Referring to Figure 7 In some possible embodiments, the second voltage dividing unit 22 includes:

[0095] The third resistor R3 has a first end electrically connected to the battery interface, and a second end electrically connected to the controlled end of the third switch unit 23.

[0096] The fourth resistor R4 has a first end electrically connected to the second end of the third resistor R3, and a second end grounded.

[0097] In the embodiment, the first end of the third resistor R3 serves as the first end of the second voltage dividing unit 22, the second end of the fourth resistor R4 serves as the second end of the second voltage dividing unit 22, and the second end of the third resistor R3 and the first end of the fourth resistor R4 are commonly connected to serve as the third end of the second voltage dividing unit 22.

[0098] In the embodiment, when the detachable battery is connected to the battery interface, as long as the voltage provided by the second battery voltage VBAT2 after being divided by the third resistor R3 and the fourth resistor R4 and provided to the controlled end of the third switch unit 23 can make the third switch unit 23 conductive, the second switch unit 21 can also be conductive, and the second battery voltage VBAT2 can be output to the adjustment module 30 through the second switch unit 21.

[0099] It should be noted that the combination of the third resistor R3 and the fourth resistor R4 is only an optional example of the second voltage dividing unit 22, and other components or combinations thereof with the same function as the combination of the third resistor R3 and the fourth resistor R4 can also be used to realize the second voltage dividing unit 22, and the embodiment does not limit this.

[0100] Referring to Figure 8In some possible embodiments, the third switch unit 23 comprises:

[0101] The base of the transistor Q3 is electrically connected to the third end of the second voltage dividing unit 22, the collector of the transistor Q3 is electrically connected to the controlled end of the second switch unit 21, and the emitter of the transistor Q3 is grounded.

[0102] In this embodiment, the base of the transistor Q3 serves as the controlled end of the third switch unit 23, the collector of the transistor Q3 serves as the first end of the third switch unit 23, and the emitter of the transistor Q3 serves as the second end of the third switch unit 23.

[0103] In this embodiment, when the battery interface accesses the detachable battery, as long as the voltage provided by the second battery voltage VBAT2 of the detachable battery after being divided by the second voltage dividing unit 22 and provided to the base of the transistor Q3 is greater than the bias voltage of the transistor Q3, the transistor Q3 is turned on, and then the second switch unit 21 is also turned on, and the second battery voltage VBAT2 can be output to the adjustment module 30 through the second switch unit 21.

[0104] It should be noted that the transistor Q3 is only an optional example of the third switch unit 23, and other types of switch tubes with the same on-off characteristics as the transistor Q3 can also be used to realize the third switch unit 23, and the present embodiment does not limit this.

[0105] Referring to Figure 9 In some possible embodiments, the adjustment module 30 comprises:

[0106] The first end of the fourth switch unit 31 is electrically connected to the third end of the second power supply module 20, the second end of the fourth switch unit 31 is electrically connected to the third end of the power management module 01, and the controlled end of the fourth switch unit 31 is electrically connected to the control module 40.

[0107] The first end of the fourth switch unit 31 is electrically connected to the third end of the second power supply module 20, the second end of the fourth switch unit 31 is electrically connected to the third end of the power management module 01, and the controlled end of the fourth switch unit 31 is electrically connected to the control module 40.

[0108] In this embodiment, the first end of the fourth switch unit 31 and the first end of the voltage boosting unit 32 are commonly connected as the first end of the adjustment module 30, the second end of the fourth switch unit 31 serves as the second end of the adjustment module 30, the second end of the voltage boosting unit 32 serves as the third end of the adjustment module 30, and the controlled end of the fourth switch unit 31 and the controlled end of the voltage boosting unit 32 commonly serve as the controlled end of the adjustment module 30.

[0109] In the embodiment, the on-off of the fourth switch unit 31 and the boost unit 32 are determined by the control module 40.

[0110] As an example, in the case that the control module 40 controls the fourth switch unit 31 to be on and controls the boost unit 32 to be off, the detachable battery can provide the stable system voltage VSYS to the powered end through the second power supply module 20, the fourth switch unit 31 and the power management module 01 in sequence; in the case that the control module 40 controls the fourth switch unit 31 to be off and controls the boost unit 32 to be on, the detachable battery can supply power to the powered end through the second power supply module 20, the fourth switch unit 31 and the power management module 01 in sequence and simultaneously charge the built-in battery.

[0111] As an example, the fourth switch unit 31 in the embodiment can be any type of SW (Switch) switch element which can be controlled by the control module to be on or off, and the boost unit 32 can be a boost circuit which can convert the second battery voltage VBAT2 to 5V and then output, wherein 5V can be a standard voltage suitable for charging the built-in battery, which can be flexibly adjusted according to actual conditions in actual application, and the embodiment does not limit this.

[0112] In some possible embodiments, the power supply management circuit provided by the above embodiment can also be electrically connected with a charging interface of an electronic device, with reference to Figure 10 The third end of the adjustment module 30, the third end of the power management module 01 and the control module 40 can also be electrically connected with the charging interface of the electronic device.

[0113] In the embodiment, in the case that the charging voltage VBUS is provided to the power management module 01, the power management module 01 can provide the stable system voltage VSYS to the powered end based on the charging voltage VBUS, and at the same time, the power management module 01 can also charge the built-in battery based on the charging voltage VBUS. In the case that the control module 40 detects that the charging interface accesses the charging voltage VBUS and the battery interface accesses the detachable battery, the control module 40 can adjust the on-off state of the adjustment module 30, so that the power management module 01 can also charge the detachable battery based on the charging voltage VBUS.

[0114] In addition, the embodiment of the present application further provides an electronic device, which comprises the power supply management circuit provided by the above embodiment.

[0115] In the embodiment, the electronic device can comprise a built-in battery, a battery interface for accessing a detachable battery and a powered end, the power supply management circuit is electrically connected with the built-in battery, the battery interface and the powered end respectively, and the electronic device can further comprise a charging interface for accessing a charging voltage, and the charging interface is also electrically connected with the power supply management circuit.

[0116] As an example, the electronic device can be smart glasses, such as AI glasses, AR glasses, and can also be other devices capable of dual battery power supply by built-in battery and detachable battery, and the embodiments are not limited thereto.

[0117] The electronic device provided in the embodiments and the power supply management circuit provided in the above embodiments belong to the same technical concept, and the technical details not described in detail in the embodiments can be referred to any of the above embodiments, and the embodiments have the same beneficial effects as the above power supply management circuit embodiments.

[0118] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative positional relationship, movement condition, etc. between components in a certain specific posture (as shown in the drawings), and if the specific posture changes, the directional indications will also change accordingly.

[0119] In addition, the descriptions such as "first", "second" and the like in the embodiments of the present application are only for descriptive purposes, and cannot be understood as indicating or implying the relative importance of the technical features indicated or implying the number of technical features indicated. Therefore, the features limited by "first" and "second" can explicitly or implicitly include at least one of the features. In the description of the embodiments of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically limited. In addition, the meaning of "and / or" appearing throughout the text is to include three parallel schemes, for example, "A and / or B" includes A scheme, or B scheme, or A and B schemes that meet at the same time.

[0120] In the embodiments of the present application, unless otherwise specifically defined and limited, the terms "connection", "fixing" and the like should be understood in a broad sense, for example, "fixing" can be fixed connection, or detachable connection, or integral; can be mechanical connection, or electrical connection; can be directly connected, or indirectly connected through an intermediate medium; can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise specifically limited. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0121] It should also be understood that, in the description of the embodiments of the present application, the reference to "one embodiment" or "some embodiments" or the like means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present application. Therefore, the appearances of the phrases "in one embodiment", "in some embodiments", "in other embodiments", "in additional embodiments" or the like in various places in the specification are not necessarily all referring to the same embodiment, but mean that "one or more but not all embodiments", unless otherwise specifically noted. The terms "comprising", "including", "having" and their conjugates mean "including but not limited to", unless otherwise specifically noted.

[0122] It should be noted that the technical solutions of various embodiments of the present application can be combined with each other, but must be based on the fact that a person skilled in the art can realize them, and when the combination of technical solutions contradicts each other or cannot be realized, it should be considered that the combination of technical solutions does not exist and is not within the protection scope claimed by the present application.

[0123] The above is only an optional embodiment of the present application, and does not limit the patent scope of the present application, and any equivalent structure or equivalent process transformation made by using the content of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A power supply management circuit, characterized by comprising: The power supply management circuit comprises: a power management module, a first end of the power management module being electrically connected with a power receiving end of the electronic device; a first power supply module, a first end of the first power supply module being electrically connected with the built-in battery, a second end of the first power supply module being electrically connected with a second end of the power management module, a third end of the first power supply module being electrically connected with a battery interface for connecting a detachable battery, a fourth end of the first power supply module being grounded, the first power supply module being configured to be turned on when a voltage of the battery interface is lower than a preset threshold, so that the built-in battery supplies power to the power receiving end through the power management module; a second power supply module, a first end of the second power supply module being electrically connected with the battery interface, a second end of the second power supply module being grounded; a regulating module, a first end of the regulating module being electrically connected with a third end of the second power supply module, a second end and a third end of the regulating module being electrically connected with a third end and a fourth end of the power management module respectively, the regulating module comprising a fourth switch unit and a voltage boosting unit, a first end of the fourth switch unit being electrically connected with the third end of the second power supply module, a second end of the fourth switch unit being electrically connected with the third end of the power management module, a first end of the voltage boosting unit being electrically connected with the third end of the second power supply module, a second end of the voltage boosting unit being electrically connected with the fourth end of the power management module; a control module, the control module being electrically connected with a controlled end of the fourth switch unit, a controlled end of the voltage boosting unit, the built-in battery and the battery interface respectively, the control module being configured to adjust on-off states of the regulating module according to an electric quantity of the detachable battery and an electric quantity of the built-in battery, in a case that the control module controls the fourth switch unit to be turned on and controls the voltage boosting unit to be turned off, the detachable battery supplies power to the power receiving end through the power management module, in a case that the control module controls the fourth switch unit to be turned off and controls the voltage boosting unit to be turned on, the detachable battery supplies power to the power receiving end and the built-in battery through the power management module, the voltage boosting unit being used to convert an output voltage of the detachable battery into a standard voltage suitable for charging the built-in battery.

2. The power management circuit of claim 1, wherein, The first power supply module comprises: a first switch unit, a first end of the first switch unit being electrically connected with the built-in battery, a second end of the first switch unit being electrically connected with the second end of the power management module; a first voltage dividing unit, a first end of the first voltage dividing unit being electrically connected with the battery interface, a second end of the first voltage dividing unit being electrically connected with a controlled end of the first switch unit, a third end of the first voltage dividing unit being grounded.

3. The power management circuit of claim 2, wherein, The first switch unit comprises: a first PMOS tube, a source of the first PMOS tube being electrically connected with the built-in battery, a drain of the first PMOS tube being electrically connected with the second end of the power management module, a gate of the first PMOS tube being electrically connected with the second end of the first voltage dividing unit.

4. The power management circuit of claim 2, wherein, The first voltage dividing unit comprises: a first resistor, a first end of the first resistor being electrically connected with the battery interface, and a second end of the first resistor being electrically connected with a controlled end of the first switch unit; a second resistor, a first end of the second resistor being electrically connected with the second end of the first resistor, and a second end of the second resistor being grounded.

5. The power management circuit of claim 1, wherein, The second power supply module comprises: a second switch unit, a first end of the second switch unit being electrically connected with the battery interface, and a second end of the second switch unit being electrically connected with a first end of the regulating module; a second voltage dividing unit, a first end of the second voltage dividing unit being electrically connected with the first end of the second switch unit, and a second end of the second voltage dividing unit being grounded; a third switch unit, a controlled end of the third switch unit being electrically connected with a third end of the second voltage dividing unit, a first end of the third switch unit being electrically connected with a controlled end of the second switch unit, and a second end of the third switch unit being grounded.

6. The power management circuit of claim 5, wherein, The second switch unit comprises: a second PMOS tube, a source of the second PMOS tube being electrically connected with the battery interface, a drain of the second PMOS tube being electrically connected with the first end of the regulating module, and a gate of the second PMOS tube being electrically connected with the first end of the third switch unit.

7. The power management circuit of claim 5, wherein, The second voltage dividing unit comprises: a third resistor, a first end of the third resistor being electrically connected with the battery interface, and a second end of the third resistor being electrically connected with the controlled end of the third switch unit; a fourth resistor, a first end of the fourth resistor being electrically connected with the second end of the third resistor, and a second end of the fourth resistor being grounded.

8. The power management circuit of claim 5, wherein, The third switch unit comprises: a triode, a base of the triode being electrically connected with the third end of the second voltage dividing unit, a collector of the triode being electrically connected with the controlled end of the second switch unit, and an emitter of the triode being grounded.

9. An electronic device, comprising: The electronic device comprises the power supply management circuit as claimed in any one of claims 1 to 8.

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