CN116111660A - Power supply regulation circuit, charging device and power supply mode adjustment method thereof - Google Patents

Power supply regulation circuit, charging device and power supply mode adjustment method thereof Download PDF

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Publication number
CN116111660A
CN116111660A CN202111326776.9A CN202111326776A CN116111660A CN 116111660 A CN116111660 A CN 116111660A CN 202111326776 A CN202111326776 A CN 202111326776A CN 116111660 A CN116111660 A CN 116111660A
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CN
China
Prior art keywords
power supply
power
value
value range
range
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Pending
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CN202111326776.9A
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Chinese (zh)
Inventor
孙培华
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Giga Byte Technology Co Ltd
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Giga Byte Technology Co Ltd
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Priority to CN202111326776.9A priority Critical patent/CN116111660A/en
Publication of CN116111660A publication Critical patent/CN116111660A/en
Pending legal-status Critical Current

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H02J7/00302—Overcharge protection
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H02J7/0031—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using battery or load disconnect circuits
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/007—Regulation of charging or discharging current or voltage
    • H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
    • H02J7/00714—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery charging or discharging current

Abstract

A power supply regulation circuit, a charging device and a power supply mode adjusting method thereof. The power supply mode adjusting method is used for a power supply regulating circuit and comprises the following steps: in the detection time, the power supply regulation circuit is controlled to be in a power transmission state, a charging current is detected to obtain a detection value, whether the detection value falls into a trickle value range, a fixed voltage value range or a fixed current value range is judged, the power supply regulation circuit is controlled to be in a power stop state or a power transmission state corresponding to the value range, and the first time length, the second time length or the third time length are continued, wherein the value of the trickle value range is smaller than the value of the fixed voltage value range, and the value of the fixed voltage value range is smaller than the value of the fixed current value range.

Description

Power supply regulation circuit, charging device and power supply mode adjustment method thereof
Technical Field
The present invention relates to a power supply control circuit, a charging device and a power supply mode adjustment method thereof, and more particularly, to a power supply control circuit, a charging device and a power supply mode adjustment method thereof for preventing overcharge.
Background
Traditionally, there are two types of greatest damage to lithium batteries. The first is overdischarge, i.e. the lithium battery is discharged step by step with a small current to a voltage well below the rated voltage (typically 3.7 volts), for example below 3.0 volts. Over-discharge easily causes complete failure of the electronic device to start up, and also causes permanent damage to the lithium battery. The second is overcharge, i.e., in the case where the lithium battery has been charged, the charger continues to charge the battery. Overcharge will result in a substantial increase in the number of charge cycles of the battery. If the overcharge condition is too severe, the battery will be at risk of swelling, deformation or even explosion.
Most of the notebook computers currently on the market are built with lithium batteries and are charged by a charger, and the charger can be a conventional transformer (DCAdapter) or a novel USB-C charger. In a general use situation, a user often uses the notebook computer as a desktop computer without further processing of the power supply after plugging in an external power supply. Therefore, even if the lithium battery is already in a full state, the connection state of the charging wire is normally maintained. Under such usage habits, overcharge in a short period of time may not cause damage to the lithium battery, but long-term (e.g., ten days or even one month) continuous connection of the charger for charging will greatly reduce the service life of the lithium battery.
Furthermore, most of the conventional notebook computers have detachable lithium batteries, and the fully charged lithium batteries can be easily detached through the latch design. However, although the user can remove the lithium battery in good time to avoid the overcharge, if the user removes the lithium battery carelessly, the power supply or the mains supply is abnormal, which may cause the notebook computer to be turned off abnormally, resulting in damage of hardware components or software files.
Disclosure of Invention
In view of the above-mentioned drawbacks, an embodiment of the present invention provides a power supply mode adjustment method for a power supply regulation circuit, the power supply mode adjustment method comprising: in a detection time, controlling the power supply regulating circuit to be in a power transmission state, and detecting a charging current to obtain a detection value; judging whether the detection value falls into a trickle value range, a certain voltage value range or a certain current value range; if the detection value falls into the trickle value range, controlling the power supply regulating circuit to be in a power stop state and lasting for a first time length; if the detection value falls into the constant voltage value range, controlling the power supply regulating circuit to be in the power transmission state and lasting for a second time length; and if the detection value falls into the constant current value range, controlling the power supply regulating circuit to be in the power transmission state and lasting a third time length; wherein the value of the trickle value range is smaller than the value of the constant voltage value range, and the value of the constant voltage value range is smaller than the value of the constant current value range.
Another embodiment of the present invention provides a power supply regulation circuit, including: the sensing module is used for detecting a charging current in a detection time to obtain a detection value; the control module is coupled with the sensing module, receives the detection value and judges whether the detection value falls into a trickle value range, a certain voltage value range or a certain current value range, wherein the value of the trickle value range is smaller than the value of the fixed voltage value range, and the value of the fixed voltage value range is smaller than the value of the fixed current value range; the actuating module is coupled with the control module and receives the command of the control module to control the power supply regulating circuit to be in a power transmission state or a power stop state; the control module commands the actuation module to control the power supply regulating circuit to be in the power transmission state in the detection time; if the control module judges that the detection value falls into the trickle value range, the actuation module is instructed to control the power supply regulating circuit to be in the power stop state for a first time length; if the control module judges that the detection value falls into the constant voltage value range, the actuation module is instructed to control the power supply regulating circuit to be in the power transmission state for a second time length; and if the control module judges that the detection value falls into the constant current value range, commanding the actuation module to control the power supply regulation circuit to be in the power transmission state for a third time length.
Still another embodiment of the present invention provides a charging device including: the transformation module is used for being coupled to a power supply, converting the power provided by the power supply into a charging current and outputting the charging current; and a power supply regulation circuit as described above, wherein the sensing module of the power supply regulation circuit is coupled to the transformation module.
In summary, in order to avoid the overcharge, unbalance or other abnormal problems of the electronic device caused by the long-time connection of the power source, the power supply regulation circuit, the charging device and the power supply mode adjustment method thereof according to the present invention detect the charging current to actuate and control the power supply output to the charging system of the electronic device, so that the user can effectively reduce the probability of the overcharge, unbalance or other abnormal problems of the battery of the electronic device without changing the usage habit of the electronic device, thereby realizing the protection mechanism of the electronic device.
Drawings
FIG. 1 is a system block diagram of an embodiment of a power regulation circuit of the present invention.
Fig. 2A is a current curve of an embodiment of the electronic device connected to the power supply regulation circuit for charging the battery of the electronic device.
Fig. 2B is a voltage curve of an embodiment of the electronic device connected to the power supply regulation circuit for charging the battery of the electronic device.
Fig. 2C is a graph showing a capacitance curve of an electronic device connected to the power supply control circuit according to an embodiment of the invention for charging a battery.
Fig. 3 is a system block diagram of an embodiment of the charging device of the present invention.
Fig. 4 is a flowchart of a power mode adjustment method according to an embodiment of the invention.
Reference numerals illustrate:
100: power supply regulating circuit
300: charging device
12: sensing module
14: control module
142: boundary control element
16: actuation module
18: state control element
32: transformer module
34: power supply regulating circuit
A: receiving terminal
B: power supply terminal
BV1: first critical value
BV2: second critical value
C: power supply
R1: trickle value domain
R2: constant voltage range
R3: constant current value range
S1, S2, S3, S4, S5: step (a)
Detailed Description
The following description is of a preferred implementation of the invention, and is provided for the purpose of illustrating the general principles of the invention and not meant to limit the invention thereto. The actual summary of the invention must be referred to the claims that follow.
It should be understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, method steps, operations, elements, and/or components, but do not preclude the addition of further features, integers, method steps, operations, elements, components, or groups thereof.
In the claims, terms such as "first," "second," "third," and the like are used for modifying elements in the claims, and distinguishing between elements having the same name, not for indicating a sequential order of importance or order of execution of the steps.
It should be understood that the "electronic device" with the charging system mentioned in the present specification may be a notebook computer, a smart phone, a personal digital assistant, a navigation device, a game console, a tablet computer, or any combination thereof, but is not limited thereto. In the embodiment of the invention, for convenience of understanding, the "electronic device" can be understood as a notebook computer.
Referring to fig. 1, fig. 1 is a system block diagram of an embodiment of a power supply regulation circuit 100 according to the present invention. In one embodiment, as shown in fig. 1, the power supply regulation circuit 100 includes a sensing module 12, a control module 14 and an actuating module 16, wherein the power supply regulation circuit 100 further includes a power receiving end a and a power supplying end B, so that the power supply regulation circuit 100 can receive a charging current from the power receiving end a and then supply the charging current as an output power to the electronic device through the power supplying end B. It should be noted that, in fig. 1, the transmission path of the electric power is shown by a solid line, and the transmission path of the signal transmitted between the sensing module 12 and the control module 14 or between the control module 14 and the actuation module 16 is shown by a dashed line.
In one embodiment, the sensing module 12 can detect a charging current of a power receiving terminal a during a detection time to obtain a detection value, and the power supply regulation circuit 100 is in a power transmission state during the detection time. For example, the detection time refers to a length of time that can be used to provide the sensing module 12 to perform detection of the charging current, such as several milliseconds (ms) or several microseconds (μs), but the disclosure is not limited thereto.
For clarity of illustration of the control module 14, please refer to fig. 1, 2A, 2B and 2C together. Fig. 2A is a current curve of an embodiment of the electronic device connected to the power supply regulation circuit 100 for charging a battery, fig. 2B is a voltage curve, and fig. 2C is a capacitance curve. In one embodiment, the control module 14 is coupled to the sensing module 12, and the control module 14 can receive the detection value and determine whether the detection value falls within a trickle range R1, a voltage range R2 or a current range R3 (as shown in fig. 2A). In one embodiment, the control module 14 may be one or more integrated circuits, such as a microprocessor (MicroProcessingUnit, MPU), a microcontroller (MicroControlUnit, MCU) or a central processing unit (CentralProcessingUnit, CPU), or other programmable general purpose or special purpose Digital signal processor (Digital SignalProcessor, DSP), programmable controller, application specific integrated circuit (Application SpecificIntegratedCircuit, ASIC) or other similar components or any combination thereof, that is, the control module 14 is at least a component capable of executing the operations described later.
With respect to the operation example of the power supply regulation circuit 100 of the present invention, in one embodiment, if the control module 14 determines that the detected value falls within the trickle value range R1, the control module 14 controls the actuation module 16 according to a first actuation mode, that is, continuously prohibiting the transmission of power (i.e., even if the power supply regulation circuit 100 assumes a power stop state) for a first period of time. In detail, when the charging current of the power receiving terminal a falls within the trickle value range R1, for example, the detected value is smaller than 0.05 ampere or approaches zero, i.e. the power receiving object (i.e. the battery of the electronic device) indicating the output power of the power supply terminal B of the present invention has approached to saturation of the power. Therefore, to prevent the battery in the electronic device from being overcharged, the control module 14 enters the first actuation mode, and the control actuation module 16 is turned off to stop the output power from being transmitted from the power supply terminal B. Since the electronic device is powered by its own battery during the first time period, the first time period is preferably set according to the battery capacity of the electronic device, for example, 2 hours.
In one embodiment, if the control module 14 determines that the detected value falls within the constant voltage range R2, the control module 14 controls the actuation module 16 according to a second actuation mode, that is, continuously transmitting power (i.e., the power supply regulation circuit 100 is in the power transmission state) for a second period of time. In detail, when the charging current of the power receiving end a falls within the constant voltage range R2, for example, the detection value is between 0.05 and 1.5 amperes, that is, the power receiving object of the output power of the present invention has stored a certain amount of power, for example, an amount of power between 50% and 90% of the battery capacity. Since the charging system of the electronic device usually charges the battery in the constant voltage mode to enter the trickle mode, the second time period is preferably set according to the battery capacity of the electronic device, for example, 0.5 hours.
In one embodiment, if the control module 14 determines that the detected value falls within the constant current range R3, the control module 14 controls the actuation module 16 according to a third actuation mode, that is, continuously transmitting power for a third period of time. In detail, when the charging current of the power receiving end a falls within the constant current range R3, for example, the detected value is greater than 1.5 amperes, which indicates that the power receiving object of the output power of the present invention has reached the condition that the power consumption is exhausted or only a small amount of power remains. Since the charging system of the electronic device generally charges the battery in the constant current mode to avoid abnormal shutdown of the electronic device and enter the constant voltage mode, the third time period is preferably set according to the battery capacity of the electronic device, for example, 1 hour.
The control module 14 can adjust the values of the first to third time periods according to the requirement, and also adjust the boundary values between two adjacent value ranges of the trickle value range R1, the constant voltage value range R2 and the constant current value range R3 according to the requirement. In detail, the control module 14 may have a boundary adjusting element 142, so that before the control module 14 obtains the detected value and determines which range the detected value falls into, the value of a first boundary value BV1 between the trickle value range R1 and the constant voltage value range R2 and the value of a second boundary value BV2 between the constant voltage value range R2 and the constant current value range R3 may be preset according to the characteristics of the battery of the electronic system. The boundary adjusting element 142 may be a physical switch that uses a multi-section dial switch or a sliding switch to set the two boundary values BV1 and BV2, or may be a virtual switch implemented through a communication element and a software operation interface, wherein the communication element may be, for example, a wireless radio frequency identification system (RadioFrequencyIdentification, RFID), a Near-field wireless communication (Near FieldCommunication, NFC) or Bluetooth (Bluetooth). Therefore, the power supply regulation circuit 100 of the present invention can be applied to various batteries with different specifications and characteristics, and achieve a protection mechanism for preventing overcharge.
After the control module 14 completes the content of the first, second or third actuation modes, i.e., it controls the actuation module 16 to continue to stop transmitting power for a first length of time, to continue transmitting power for a second length of time or to continue transmitting power for a third length of time, the power supply mode adjustment for the next round may continue. In detail, after the control module 14 completes the content of the first, second or third actuation modes, it can control the sensing module 12 again to obtain the current detection value during the detection time, and determine which mode the actuation module 16 needs to be controlled according to the detection value.
In one embodiment, the actuation module 16 may include an electronic switch (not shown), which may be MOSFET, transistor, relay, DEPFET, DGMOFET, FREDFET, HEMT, IGBT, NOMFET, MODFET, OFET, or a combination thereof. The actuating module 16 of the present embodiment is coupled to the control module 14, and the actuating module 16 can control whether the power supply regulating circuit 100 transmits power according to the instruction of the control module 14, that is, the power supply regulating circuit 100 is in the power transmission state or the power stop state. In particular, when the actuation module 16 is a switch implemented as a transistor, for example, the instructions of the control module 14 control the actuation module 16 to be in an on state or an off state.
In an embodiment, the power supply regulation circuit 100 of the present invention may further include a status regulation element 18 coupled between the powered terminal a and the powered terminal B, that is, a series circuit of the sensing module 12, the control module 14 and the actuating module 16 is connected in parallel with the status regulation element 18. The state control element 18 is used to set whether the command of the control module 14 can determine the state of the power supply control circuit 100, wherein the state control element 18 can be a toggle switch to short-circuit between the power receiving terminal a and the power supplying terminal B when conducting.
Referring to fig. 3, fig. 3 is a system block diagram of a charging device 300 according to an embodiment of the invention. In one embodiment, as shown in fig. 3, the charging device 300 includes a voltage transformation module 32 and a power regulation circuit 34, wherein the power regulation circuit 34 can be implemented by the power regulation circuit 100 shown in fig. 1, and the voltage transformation module 32 is a sensing module (not shown) coupled to the power regulation circuit 34. In an embodiment, the transformation module 32 is configured to be coupled to a power source C, and the transformation module 32 can convert the power provided by the power source C into the charging current received by the power receiving end a of the power supply regulating circuit 34. For example, the power source C may be an ac power of 100 to 240 v, and the charging current received by the power receiving end a after the power source C is converted may be a dc power of 5 to 24 v, but the disclosure is not limited to the values of the ac power and the dc power.
Referring to fig. 4, fig. 4 is a flowchart illustrating an embodiment of a power mode adjustment method according to the present invention. In step S1, the power supply control circuit 100 is controlled to be in a power transmission state during the detection time, and the charging current is detected to obtain a detection value. In detail, in an embodiment, the control module 14 may control the actuation module 16 to be in a conductive state during the detection time, and the sensing module 12 obtains the detection value corresponding to the charging current.
In step S2, the control module 14 determines whether the detected value falls within the trickle value range R1, the constant voltage value range R2 or the constant current value range R3, wherein the value of the trickle value range R1 is smaller than the value of the constant voltage value range R2, and the value of the constant voltage value range R2 is smaller than the value of the constant current value range R3 (as shown in fig. 2A).
If the detected value falls within the trickle value range R1, step S3 is continued. In step S3, the control module 14 controls the actuation module 16 according to the first actuation mode, so that the power supply control circuit 100 is in a power-off state for a first period of time. The first time period is less than a time period from the saturation of the electric quantity to the exhaustion of the electric quantity when the battery of the electronic device is in normal use. For example, if the electronic device is a notebook computer with a charging specification of "CC-CV0.5C (max) 4.20V,65mAcut-offat25 ℃, the first time period may be 2 hours.
If the detected value falls within the constant voltage range R2, step S4 is continued. In step S4, the control module 14 controls the actuation module 16 according to the second actuation mode, so that the power supply regulation circuit 100 is in the power transmission state for a second period of time. The second time period is a time required for the battery in the electronic device to charge from a certain amount of electricity (for example, about 60% of the amount of electricity) to a state of charge close to saturation, and is generally smaller than the first time period. For example, if the electronic device is a notebook computer with a charging standard of "CC-CV0.5C (max) 4.20V,65mAcut-offat25 ℃, the second time period may be 0.5 hour.
If the detected value falls within the constant current value range R3, step S5 is continued. In step S5, the control module 14 controls the actuation module 16 according to the third actuation mode to make the power supply regulation circuit 100 in the power transmission state for a third period of time. The third time period is less than the time period required from the exhaustion of the electric power to the saturation of the electric power of the battery in the electronic device under normal use, and is generally less than the first time period but greater than the second time period. For example, if the electronic device is a notebook computer with a charging specification of "CC-CV0.5C (max) 4.20V,65mAcut-offat25 ℃, the third time period may be 1 hour.
In addition, as shown in fig. 4, after any of the steps S3 to S5 is completed, step S1 may be performed again, so as to determine whether to continue to supply power to the electronic device according to the current storage amount of the battery of the electronic device. In addition, before executing step S1, a command may be received in advance to set a first threshold BV1 between the trickle value range R1 and the constant voltage value range R2, and to set a second threshold BV2 between the constant voltage value range R2 and the constant current value range R3, so as to meet the battery specification requirements of different electronic devices.
The power supply regulation circuit, the charging device and the power supply mode adjustment method thereof control power supply output by detecting charging current. In other words, the present invention can actuate and control the power supply output according to the charging current, and when the charging system coupled to the electronic device of the present invention charges, the probability of overcharge, unbalance or other abnormal problems of the battery in the electronic device can be effectively reduced without changing the usage habit of the electronic device.
However, the above-mentioned embodiments are merely examples of the present invention, and the present invention is not limited to the above embodiments, but is intended to cover all the modifications and equivalent arrangements included within the scope of the present invention as defined in the appended claims and their equivalents.

Claims (7)

1. A power mode adjustment method for a power regulation circuit, the power mode adjustment method comprising:
in a detection time, controlling the power supply regulating circuit to be in a power transmission state, and detecting a charging current to obtain a detection value;
judging whether the detection value falls into a trickle value range, a certain voltage value range or a certain current value range;
if the detection value falls into the trickle value range, controlling the power supply regulating circuit to be in a power stop state and lasting for a first time length;
if the detection value falls into the constant voltage value range, controlling the power supply regulating circuit to be in the power transmission state and lasting for a second time length; and
if the detection value falls into the constant current value range, controlling the power supply regulating circuit to be in the power transmission state and lasting for a third time length;
wherein the value of the trickle value range is smaller than the value of the constant voltage value range, and the value of the constant voltage value range is smaller than the value of the constant current value range.
2. The power supply mode adjustment method of claim 1, wherein the first time period is longer than the third time period; and the third length of time is greater than the second length of time.
3. The power mode adjustment method according to claim 1, wherein before determining whether the detected value falls within the trickle range, the constant voltage range or the constant current range, receiving a command to set a first threshold between the trickle range and the constant voltage range and a second threshold between the constant voltage range and the constant current range.
4. A power supply regulation circuit comprising:
the sensing module is used for detecting a charging current in a detection time to obtain a detection value;
the control module is coupled with the sensing module, receives the detection value and judges whether the detection value falls into a trickle value range, a certain voltage value range or a certain current value range, wherein the value of the trickle value range is smaller than the value of the fixed voltage value range, and the value of the fixed voltage value range is smaller than the value of the fixed current value range; and
the actuating module is coupled with the control module and receives a command of the control module to control the power supply regulating circuit to be in a power transmission state or a power stop state;
the control module commands the actuation module to control the power supply regulating circuit to be in the power transmission state in the detection time;
if the control module judges that the detection value falls into the trickle value range, the actuation module is instructed to control the power supply regulating circuit to be in the power stop state for a first time length;
if the control module judges that the detection value falls into the constant voltage value range, the actuation module is instructed to control the power supply regulating circuit to be in the power transmission state for a second time length; and
if the control module judges that the detection value falls into the constant current value range, the actuation module is instructed to control the power supply regulating circuit to be in the power transmission state for a third time length.
5. The power supply regulation circuit of claim 4, wherein the first length of time is greater than the third length of time, which is greater than the second length of time.
6. The power supply control circuit of claim 4, wherein the sensing module, the control module and the actuation module are connected between a powered terminal and a power supply terminal, and the power supply control circuit further comprises a status control element connected between the powered terminal and the power supply terminal to selectively form a short circuit between the powered terminal and the power supply terminal.
7. A charging device, comprising:
the transformation module is used for being coupled to a power supply, converting the power provided by the power supply into a charging current and outputting the charging current; and
the power regulation circuit of claim 4, wherein the sensing module of the power regulation circuit is coupled to the transforming module.
CN202111326776.9A 2021-11-10 2021-11-10 Power supply regulation circuit, charging device and power supply mode adjustment method thereof Pending CN116111660A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202111326776.9A CN116111660A (en) 2021-11-10 2021-11-10 Power supply regulation circuit, charging device and power supply mode adjustment method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202111326776.9A CN116111660A (en) 2021-11-10 2021-11-10 Power supply regulation circuit, charging device and power supply mode adjustment method thereof

Publications (1)

Publication Number Publication Date
CN116111660A true CN116111660A (en) 2023-05-12

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202111326776.9A Pending CN116111660A (en) 2021-11-10 2021-11-10 Power supply regulation circuit, charging device and power supply mode adjustment method thereof

Country Status (1)

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