CN113746148A

CN113746148A - Power supply module, electronic device, charging control method, charging control device, and storage medium

Info

Publication number: CN113746148A
Application number: CN202010463187.4A
Authority: CN
Inventors: 孙长宇; 王彦腾
Original assignee: Beijing Xiaomi Mobile Software Co Ltd
Current assignee: Beijing Xiaomi Mobile Software Co Ltd
Priority date: 2020-05-27
Filing date: 2020-05-27
Publication date: 2021-12-03

Abstract

The present disclosure relates to a power supply module, an electronic device, a charging control method, a charging control apparatus, and a storage medium, the power supply module including: a power supply input terminal; a ground terminal; at least one first branch respectively with power input end and ground connection connects includes: a switch unit and a first battery unit electrically connected; the first battery unit is electrically connected with the power supply input end through the switch unit; the positive electrode of the second battery unit is electrically connected with the power supply input end through the switch unit, and the negative electrode of the second battery unit is electrically connected with the grounding end; wherein the first battery cell and the second battery cell are connected in series when the switching unit is in a first switching state; when the switch unit is in a second switch state, the first battery unit and the second battery unit are connected in parallel; the power supply assembly can be used in a pulsed charging mode comprising a charging phase and an equalization phase.

Description

Power supply module, electronic device, charging control method, charging control device, and storage medium

Technical Field

The present disclosure relates to the field of electronic devices, and in particular, to a power supply module, an electronic device, a charging control method and apparatus, and a storage medium.

Background

With the continuous development and maturation of electronic technology, electronic devices such as mobile phones, tablet computers, portable computers and the like also become essential tools for people to live and work.

In order to improve the cruising ability of a battery of an electronic apparatus, a plurality of batteries may be mounted in the electronic apparatus. How to rapidly and safely charge electronic equipment with a plurality of batteries is a problem to be solved urgently.

Disclosure of Invention

The present disclosure provides a power supply module, an electronic device, a charging control method, a charging control apparatus, and a storage medium.

According to a first aspect of embodiments of the present disclosure, there is provided a power supply component comprising:

a power supply input terminal;

a ground terminal;

at least one first branch respectively with power input end and ground connection connects includes: a switch unit and a first battery unit electrically connected; the first battery unit is electrically connected with the power supply input end through the switch unit;

the positive electrode of the second battery unit is electrically connected with the power supply input end through the switch unit, and the negative electrode of the second battery unit is electrically connected with the grounding end;

wherein the first battery cell and the second battery cell are connected in series when the switching unit is in a first switching state; when the switch unit is in a second switch state, the first battery unit and the second battery unit are connected in parallel; the power supply assembly can be used in a pulsed charging mode comprising a charging phase and an equalization phase.

In some embodiments, the switching unit includes: the first switch piece, the second switch piece, the third switch piece and the fourth switch piece are sequentially connected in series between the power input end and the grounding end;

the positive electrode of the first battery unit is connected between the first switch piece and the second switch piece, and the negative electrode of the first battery unit is connected between the third switch piece and the fourth switch piece;

the positive electrode of the second battery unit is connected between the second switching piece and the third switching piece;

wherein when the switching unit is in the first switching state, the first switching piece and the third switching piece are on, and the second switching piece and the fourth switching piece are off;

when the switch unit is in the second switch state, the first switch piece and the third switch piece are disconnected, and the second switch piece and the fourth switch piece are connected; or, when the switch unit is in the second switch state, the first switch, the second switch and the fourth switch are turned on, and the third switch is turned off.

In some embodiments, the power supply component further comprises:

the control unit is respectively electrically connected with the first switch component, the second switch component, the third switch component and the fourth switch component and is used for controlling the power supply component to be charged in a first pulse charging mode when the charging power supported by the current charging mode is greater than or equal to the preset power; wherein the first pulsed charging pattern has alternating first charging phases and first equalization phases;

in the first charging phase, the first switching element and the third switching element are turned on, and the second switching element and the fourth switching element are turned off;

in the first equalization stage, the first switching element and the third switching element are turned off, and the second switching element and the fourth switching element are turned on.

In some embodiments, the power supply component further comprises: and the power output end is connected between the second switching piece and the third switching piece.

In some embodiments, the power supply component further comprises: the control unit is used for controlling the power supply assembly to be charged in a second pulse charging mode when the charging power supported by the current charging mode is smaller than the preset power;

wherein the first cell and the second cell are in parallel, the second pulse charge pattern having alternating second charge phases and second equalization phases; in the second charging phase, the first switch, the second switch and the fourth switch are turned on, and the third switch is turned off; in the second equalization stage, the first switching element and the third switching element are turned off, and the second switching element and the fourth switching element are turned on.

In some embodiments, the control unit is further configured to control the power supply component to be charged in a constant-current constant-voltage charging mode when the charging power supported by the current charging mode is less than the preset power; the first switch piece, the second switch piece and the fourth switch piece are connected, the third switch piece is disconnected, and the first battery unit and the second battery unit are connected in parallel.

In some embodiments, the control unit is electrically connected to the first battery unit and the second battery unit, respectively, for,

determining a difference between a first voltage of the first battery cell and a second voltage of the second battery cell while charging the first battery cell and the second battery cell in the first pulse charging mode;

when the difference value between the first voltage and the second voltage is larger than or equal to a preset difference value, controlling the first battery unit and the second battery unit to be in the first equalization stage; or,

and when the difference value of the first voltage and the second voltage is smaller than the preset difference value, controlling the first battery unit and the second battery unit to be in the first charging stage.

In some embodiments, the power supply component further comprises:

the voltage reduction unit is electrically connected with the control unit and connected with the first branch in parallel, and is used for converting a first input voltage received by the power supply input end into a second input voltage when the charging power supported by the current charging mode is less than the preset power;

wherein a second input voltage is less than the first input voltage, the second input voltage is used for charging the first battery cell and the second battery cell which are connected in parallel, the first switch element and the third switch element are disconnected, and the second switch element and the fourth switch element are connected.

In some embodiments, the power supply component further comprises at least one of:

a first capacitor unit connected between the power input terminal and the first branch;

the second capacitor unit is connected between the anode of the second battery unit and the power output end;

and the third capacitor unit is connected with the first battery unit in parallel.

According to a second aspect of the embodiments of the present disclosure, there is provided an electronic apparatus including:

the power supply component as provided in the first aspect of the embodiments of the present disclosure;

and the functional component is electrically connected with the power supply component and used for receiving the electric energy provided by the power supply component and executing a preset function.

According to a third aspect of the embodiments of the present disclosure, there is provided a charge control method applied to an electronic device including a first battery cell and a second battery cell, the method including:

determining the charging power supported by the current charging mode;

when the charging power supported by the current charging mode is greater than or equal to the preset power, charging the first battery unit and the second battery unit in a first pulse charging mode;

wherein the first pulsed charging pattern has alternating first charging phases and first equalization phases; in the first charging phase, the first battery unit and the second battery unit are connected in series; in the first equalization stage, the first battery unit and the second battery unit are equalized in parallel.

In some embodiments, the method further comprises:

when the charging power supported by the current charging mode is less than the preset power, charging the first battery unit and the second battery unit in a second pulse charging mode;

wherein the first battery cell and the second battery cell are connected in parallel, the charging voltage of the second pulse charging mode is less than the charging voltage of the first pulse charging mode, and the second pulse charging mode has alternating second charging phases and second equalization phases; in the second charging phase, the first battery unit and the second battery unit are charged in parallel; and in the second equalization stage, the first battery unit and the second battery unit are equalized in parallel.

In some embodiments, the method further comprises:

and when the charging power supported by the current charging mode is less than the preset power, controlling the first battery unit and the second battery unit which are connected in parallel to be charged in a constant-current constant-voltage charging mode.

In some embodiments, the method further comprises:

detecting a first voltage of the first battery cell and a second voltage of the second battery cell;

the charging the first battery cell and the second battery cell in a first pulse charging mode, comprising:

when the difference value between the first voltage and the second voltage is larger than or equal to a preset difference value, controlling the first battery unit and the second battery unit to be in the first equalization stage;

In some embodiments, the method further comprises:

when the charging power supported by the current charging mode is smaller than the preset power, converting a first input voltage received by the electronic equipment into a second input voltage, wherein the second input voltage is smaller than the first input voltage; wherein the second input voltage is used to charge the first battery cell and the second battery cell in parallel.

According to a fourth aspect of the embodiments of the present disclosure, there is provided a charge control device including:

a processor;

a memory for storing processor-executable instructions;

wherein the processor is configured to: when the executable instructions are executed, the steps in the method according to the third aspect of the embodiment of the present disclosure are implemented.

According to a fifth aspect of the embodiments of the present disclosure, there is provided a non-transitory computer-readable storage medium, wherein instructions, when executed by a processor of a mobile terminal, enable the mobile terminal to perform the steps of the method as provided by the third aspect of the embodiments of the present disclosure.

The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects:

through the switching unit switching between first on-off state and second on-off state, can make power supply module's first battery unit and second battery unit switch between establishing ties and parallelly connecting, can satisfy the application demand under the different scenes, improved power supply module's control flexibility ratio.

Furthermore, the power supply module provided by the embodiment of the disclosure can be used in a pulse charging mode including a charging phase and an equalizing phase, and in the charging phase, the charging current in the charging phase can be increased to improve the charging speed of the first battery unit and the second battery unit. In the equalization stage, the first battery unit and the second battery unit are temporarily stopped from being charged, so that the increase of heat productivity caused by the increase of charging current can be reduced, the charging safety is ensured, and the aging speed of the first battery unit and the second battery unit is reduced.

Further, in the equalization stage, the first battery unit and the second battery unit are equalized, namely, the first battery unit and the second battery unit are equalized in the charging process, so that the voltage difference between the first battery unit and the second battery unit is favorably reduced, the first battery unit and the second battery unit can be fully charged when charging is completed, the charging effect is better, and the duration of the electronic equipment is favorably prolonged.

Furthermore, because the power supply module can be used for charging the first battery unit and the second battery unit in a pulse charging mode, the first battery unit and the second battery unit can be balanced in a balancing stage in the charging process, an additional balancing structure is not required to be arranged, and the circuit design of the power supply module is simplified.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.

FIG. 1 is a block diagram illustrating a power supply assembly according to an exemplary embodiment.

FIG. 2 is a block diagram illustrating another power supply component in accordance with an exemplary embodiment.

Fig. 3a is a circuit diagram illustrating a first charge phase of a first pulse charge mode according to an example embodiment.

Fig. 3b is a circuit diagram illustrating an equalization phase of a pulsed charging mode according to an example embodiment.

Fig. 4 is a graph illustrating current, voltage, and time in a constant current and constant voltage charging mode according to an exemplary embodiment.

Fig. 5 is a graph illustrating current, voltage, and time in a first pulse charging mode according to an exemplary embodiment.

Fig. 6 is a timing diagram illustrating a first charging phase and a first equalization phase in a first pulse charging mode according to an example embodiment.

Fig. 7 is a circuit diagram illustrating a second charge phase of a second pulse charge mode according to an example embodiment.

FIG. 8 is a block diagram illustrating an electronic device in accordance with an example embodiment.

Fig. 9 is a flow chart illustrating a charge control method according to an exemplary embodiment.

Fig. 10 is a block diagram illustrating a charge control device according to an exemplary embodiment.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.

Fig. 1 is a schematic diagram illustrating a power supply assembly 100 according to an exemplary embodiment. Referring to fig. 1, a power module 100 includes:

a power input terminal 101;

a ground terminal (GND);

at least one first branch connected with power input terminal 101 and ground respectively includes: a switch unit 103 and a first battery unit 110 electrically connected; the first battery unit 110 is electrically connected with the power input end 101 through the switch unit 103;

a second battery unit 120, wherein the anode of the second battery unit 120 is electrically connected to the power input terminal 101 through the switch unit 103, and the cathode of the second battery unit 120 is electrically connected to the ground terminal;

wherein, when the switching unit 103 is in the first switching state, the first battery cell 110 and the second battery cell 120 are connected in series; when the switching unit 103 is in the second switching state, the first battery cell 110 and the second battery cell 120 are connected in parallel; the power supply assembly 100 can be used in a pulsed charging mode comprising a charging phase and an equalization phase.

When the power supply module 100 includes a plurality of first branches, the plurality of first branches are connected in parallel between the power supply input terminal 101 and the ground terminal.

The first battery cell 110 may include: a single battery, or a battery pack of multiple batteries. When the first battery unit 110 includes a battery pack composed of a plurality of batteries, the plurality of batteries may be connected in series, or the plurality of batteries may be connected in parallel. The battery may comprise a lithium ion battery. It is noted that when a plurality of batteries are connected in parallel to constitute the first battery unit 110, the rated voltage of each battery is the same.

The second battery cell 120 may include: a single battery, or a battery pack of multiple batteries. When the second battery unit 120 includes a battery pack composed of a plurality of batteries, the plurality of batteries may be connected in series, or the plurality of batteries may be connected in parallel. It is to be noted that, when a plurality of batteries are connected in parallel to constitute the second battery unit 120, the rated voltage of each battery is the same.

By arranging the switch unit 103, when the switch unit 103 is switched between the first switch state and the second switch state, the first battery unit 110 and the second battery unit 120 can be switched between series connection and parallel connection, so that application requirements under different scenes can be met, and the control flexibility of the power supply module 100 is improved.

Also, the power supply module 100 provided by the embodiment of the present disclosure may be used in a pulse charging mode including a charging phase and an equalizing phase, in which the charging speed for the first battery cell and the second battery cell can be increased by increasing the charging current in the charging phase. In the equalization stage, the charging of the first battery unit and the second battery unit is suspended, so that the increase of heat productivity caused by the increase of the charging current can be reduced, the charging safety is ensured, and the aging speed of the first battery unit 110 and the second battery unit 120 is reduced.

Further, in the equalizing stage, the first battery unit 110 and the second battery unit 120 are equalized, that is, the first battery unit 110 and the second battery unit 120 are equalized in the charging process, which is beneficial to reducing the voltage difference between the first battery unit 110 and the second battery unit 120, ensuring that the first battery unit 110 and the second battery unit 120 can be fully charged when the charging is completed, ensuring that the charging effect is good, and being beneficial to prolonging the endurance time of the electronic device equipped with the power supply module 100.

Furthermore, since the power module 100 can be used to charge the first battery unit 110 and the second battery unit 120 in the pulse charging mode, the first battery unit 110 and the second battery unit 120 can be equalized during the charging process by using the equalization stage, and an additional equalization structure is not required, which is beneficial to simplifying the structure of the power module 100.

In some embodiments, referring to fig. 2, the switching unit 103 includes: a first switching element 111, a second switching element 112, a third switching element 113 and a fourth switching element 114 connected in series in this order between the power input terminal 101 and the ground terminal;

the positive electrode of the first battery cell 110 is connected between the first switching piece 111 and the second switching piece 112, and the negative electrode of the first battery cell 110 is connected between the third switching piece 113 and the fourth switching piece 114;

the positive electrode of the second battery cell 120 is connected between the second switching member 112 and the third switching member 113;

wherein, when the switching unit 103 is in the first switching state, the first switching element 111 and the third switching element 113 are turned on, and the second switching element 112 and the fourth switching element 114 are turned off;

when the switching unit 103 is in the second switching state, the first switching piece 111 and the third switching piece 113 are turned off, and the second switching piece 112 and the fourth switching piece 114 are turned on; alternatively, when the switching unit 103 is in the second switching state, the first switching element 111, the second switching element 112, and the fourth switching element 114 are turned on, and the third switching element 113 is turned off.

The first, second, third and

fourth switching pieces

111, 112, 113 and 114 may have the same structure. The first, second, third, and fourth switching

parts

111, 112, 113, and 114 may include: a triode (BJT), a field effect transistor (MOS transistor), or an Insulated Gate Bipolar Transistor (IGBT), etc.

In fig. 2, "+" is used to indicate the positive electrode of the battery cell, and "-" is used to indicate the negative electrode of the battery cell.

In some embodiments, referring to fig. 2, power module 100 further comprises: the power output terminal 102 is electrically connected to the positive electrode of the second battery cell 120, and is connected between the second switching element 112 and the third switching element 113. The power output 102 may be electrically connected to a power consuming component. The power supply assembly 100 delivers power to power consuming components through a power supply output 102.

Illustratively, in the first charging phase, the first battery cell 110 and the second battery cell 120 are connected in series, and the second battery cell 120 in the power supply assembly 100 transmits power to the power consuming components through the power supply output 102. In a first equalization phase, the parallel first battery cell 110 and the second battery cell 120 transmit electrical energy to the power consuming components via the power supply output 102.

When the first switching element 111 and the third switching element 113 are turned on and the second switching element 112 and the fourth switching element 114 are turned off, the first battery unit 110 and the second battery unit 120 are connected in series, and the circuit structure of the power supply module 100 is shown in fig. 3 a. Where Vbus represents the voltage at the power supply input terminal 101, and Vsys represents the voltage at the power supply output terminal 102. The power output 102 is used to deliver power to the system of the electronic device when the power supply assembly is assembled in the electronic device.

When the first switching element 111 and the third switching element 113 are turned off and the second switching element 112 and the fourth switching element 114 are turned on, the first battery unit 110 and the second battery unit 120 are connected in parallel, and the circuit structure of the power supply module 100 is shown in fig. 3 b.

According to the embodiment of the disclosure, the first switch component 111, the second switch component 112, the third switch component 113 and the fourth switch component 114 can enable the first battery unit 110 and the second battery unit 120 of the power supply module 100 to be switched between series connection and parallel connection, so that application requirements under different scenes can be met, and the control flexibility of the power supply module 100 is improved.

Fig. 4 is a diagram illustrating current, voltage and time during which a power supply unit charges a battery in a constant current and constant voltage charging mode according to an exemplary embodiment. Referring to FIG. 4, at t₀Time to t₁At the moment, the current value is constant as I_chThe charging current to the battery is charged, and the voltage to charge the battery is gradually increased. From t₁Time to t₂At a time, a constant voltage value V is adopted_chCharging a battery, current I for charging the battery_endGradually decreases.

During charging of the battery in the constant current and constant voltage charging mode shown in fig. 4, the power supply unit continues to deliver power to the battery, i.e. the charging process does not include a period during which the battery is suspended from receiving power input. When the battery is a lithium ion battery, the lithium ion battery is charged in the charging mode shown in fig. 4, which reduces the electrochemical characteristics of the lithium ion battery, accelerates the aging speed of the lithium ion battery, and shortens the service life of the lithium ion battery.

In addition, when the charging mode shown in fig. 4 is used for charging, in order to reduce the heat generated in the charging process, the value of the charging current is small, and the value of the charging current is usually less than 5 amperes. And the charging voltage to the battery is also small, e.g., less than 5 volts. The charging power is low due to the small charging current and the small charging voltage, the charging speed is reduced, the time for fully charging the battery is long, and the user requirements are difficult to meet.

As the demand for rapid charging of power supply components has increased, many charging modes of greater power (e.g., 30 watts, 50 watts, or 100 watts, etc.) have emerged. The higher power charging modes may include: a first fast Charge mode supporting a Power Delivery (PD) protocol, a second fast Charge mode supporting a Quick Charge (QC) protocol, or a third fast Charge mode supporting a private Charge protocol, etc.

When the battery is charged in the high-power charging mode, if the battery is still charged in the constant-current constant-voltage charging mode shown in fig. 4, the heat generated by the battery is large, and it is difficult to ensure the charging safety.

In some embodiments, power supply assembly 100 further comprises:

the control unit is electrically connected with the first switch element 111, the second switch element 112, the third switch element 113 and the fourth switch element 114 respectively, and is used for controlling the power supply assembly 100 to be charged in the first pulse charging mode when the charging power supported by the current charging mode is greater than or equal to the preset power; wherein the first pulsed charging mode has alternating first charging phases and first equalization phases;

in the first charging stage, the first switching part 111 and the third switching part 113 are turned on, and the second switching part 112 and the fourth switching part 114 are turned off;

in the first equalization stage, the first and

third switching elements

111 and 113 are turned off, and the second and

fourth switching elements

112 and 114 are turned on.

The preset power may include: 30 watts or 50 watts, etc. It should be noted that, when the charging power supported by the current charging mode is greater than or equal to the preset power, the current charging mode may be considered as the fast charging mode. And the charging power supported by the current charging mode is greater than or equal to the preset power, and the charging voltage of the current charging mode is higher. For example, in the fast charging mode, the voltage input from the power input terminal 101 may be greater than or equal to 9 volts.

In the first charging phase, the voltage input at the power input terminal 101 may be equal to the sum of the rated voltage of the first battery cell 110 and the rated voltage of the second battery cell 120.

Fig. 5 shows the current flowing into the power supply module 100 and the voltage of the power supply module 100 versus time when the power supply module 100 is charged in the first pulse charging mode. Referring to fig. 3a and 5, in the first charging stage, the first battery cell 110 and the second battery cell 120 are connected in series, and the current flowing into the first battery cell 110 and the second battery cell 120 is I_high. It will be appreciated that in the first charging phase, when the power supply assembly is assembled in the electronic device, the system voltage Vsys is taken from between the first battery unit 110 and the second battery unit 120, i.e. in the first charging phase, the second battery unit 120 may supply power to the system of the electronic device.

Referring to fig. 3b and 5, in the first equalization stage, the first battery cell 110 and the second battery cell 120 are connected in parallel, and the current flowing into the first battery cell 110 and the second battery cell 120 is I_low. In the first equalization stage, the first switching element is turned off, so that the power input terminal is disconnected from the first battery cell 110 and the second battery cell 120. That is, in the first equalization phase, the first battery cell and the second battery cell are charged and suspended from receiving the current flowing into the power supply input terminal. Thus, I_lowIs 0, the first equalization phase is a non-charging phase in the first pulse charging mode.

In the first pulse charging mode, two adjacent first charge carriers areThe duration of the first charging phase between the balance phases is t_highThe duration of the first equalization phase between two adjacent first charging phases is t_low。

As shown in fig. 5 and 6, in the first pulse charging mode, the duration t of the first charging phase between two adjacent first equalization phases_highCan be regarded as t₁₂And t₁₁Time difference between two adjacent first charging phases, duration of the first equalization phase between two adjacent first charging phases, t_lowCan be regarded as t₁₃And t₁₂The time difference between them. Wherein, t₁₁For the moment of switching from the last first equalization phase to the current first charging phase, t₁₂Moment of switching from the current first charging phase to the current first equalization phase, t₁₃Is the moment of switching from the current first equalization phase to the next first charging phase. A first charging phase and an adjacent first equalization phase constitute a completed charging cycle.

It is noted that in the first charging phase, the charging speed of the first battery cell 110 and the charging speed of the second battery cell 120 may be different.

In practical applications, since it is difficult for two battery units to be identical, when the two battery units are charged with the same charging current, the voltages at the two ends of the two battery units may be different. That is, the charging speeds of the two battery cells may be different.

For the first battery cell 110 and the second battery cell 120 having different charging speeds, if the first battery cell 110 and the second battery cell 120 connected in series are simultaneously charged in the mode as shown in fig. 4, it may occur that the first battery cell 110 and the second battery cell 120 have different times to complete charging. For example, when the charging speed of the first battery unit 110 is greater than the charging speed of the second battery unit 120, when the first battery unit 110 is fully charged (i.e. the first battery unit 110 is completely charged), the second battery unit 120 may not be fully charged, and the power supply assembly 100 needs to wait for both the first battery unit 110 and the second battery unit 120 to be fully charged before it can be considered to be charged. Therefore, it is not favorable to achieve rapid charging of the power supply module 100.

In addition, for the first battery unit 110 and the second battery unit 120 with different charging speeds, the battery unit with the fast charging speed preferentially discharges to the power consuming components, and the battery unit with the slow charging speed is less likely to be used, so that the aging speed of the battery unit with the fast charging speed is accelerated, which is not favorable for prolonging the service life of the power module 100.

In the related art, when the first battery unit and the second battery unit connected in series are charged, an additional discharging equalization circuit may be generally disposed to be connected in parallel with the battery unit with the fast charging speed, so as to consume the part of the battery unit with the fast charging speed that is charged more, and thus, the charging efficiency and the electric energy utilization rate may be reduced.

In the embodiment of the present disclosure, in the first equalization stage, the first battery cell 110 and the second battery cell 120 connected in parallel may perform voltage equalization. Specifically, in the first equalization stage, charge transfer and equalization may be performed between the first battery cell 110 and the second battery cell 120 to reduce a voltage difference between the first battery cell 110 and the second battery cell 120, so that self-equalization of the first battery cell 110 and the second battery cell may be achieved.

For example, when the charging speed of the first battery cell 110 is faster than the charging speed of the second battery cell 120 in the first charging phase, the first voltage across the first battery cell 110 may be greater than the second voltage across the second battery cell 120 when switching from the first charging phase to the first equalization phase, and thus, in the first equalization phase, the first battery cell 110 may discharge to the second battery cell 120 such that the first voltage decreases and the second voltage increases to decrease the difference between the first voltage and the second voltage. That is, the first battery cell 110 and the second battery cell 120 may achieve self-equalization.

Similarly, when the charging speed of the first battery cell 110 is slower than the charging speed of the second battery cell 120 in the first charging phase, the first voltage of the first battery cell 110 may be smaller than the second voltage of the second battery cell 120 when switching from the first charging phase to the first equalization phase, and thus, the second battery cell 120 may discharge to the first battery cell 110 in the first equalization phase such that the first voltage increases and the second voltage decreases to reduce a difference between the first voltage and the second voltage. That is, the first battery cell 110 and the second battery cell 120 may achieve self-equalization.

The embodiment of the present disclosure, by providing the control unit, may realize charging the first battery unit 110 and the second battery unit 120 in the first pulse charging mode, and the first battery unit 110 and the second battery unit 120 may realize self-equalization in the first equalization stage included in the first pulse charging mode, thereby reducing the voltage difference between the first battery unit 110 and the second battery unit 120 in the charging process, which is beneficial to ensuring that the first battery unit 110 and the second battery unit 120 may be fully charged as far as possible at the same time, ensuring that the first battery unit 110 and the second battery unit 120 are similar in aging degree, and being beneficial to prolonging the service life of the power supply assembly 100.

Moreover, the control unit controls the electronic device including the first battery unit 110 and the second battery unit 120 to be charged in the first pulse charging mode, so that the first battery unit 110 and the second battery unit 120 can be balanced in the first balancing stage in the charging process, an additional balancing structure is not required, and the circuit design of the power supply module 100 is simplified.

In addition, the first equalization stage is used for equalizing the first battery unit and the second battery unit 120, so that the requirement on consistency of the first battery unit 110 and the second battery unit 120 can be reduced, and a foundation is laid for charging battery units with different sizes at the same time.

In some embodiments, the control unit may send a control signal to the first branch when the charging power supported by the current charging mode is greater than or equal to a preset power; the control signal is used to control charging of the power supply assembly 100 in the first pulse charging mode.

The control signal may have a first level and a second level. The value of the second level is different from the value of the first level.

When the control signal output to the first branch by the control unit is at the first level, the first switching element 111 and the third switching element 113 are turned on, and the second switching element 112 and the fourth switching element are turned off, the first battery cell 110 and the second battery cell 120 are in the first charging stage.

When the control signal output by the control unit to the first branch is at the second level, the first switching element 111 and the third switching element 113 are turned off, and the second switching element 112 and the fourth switching element are turned on, the first battery cell 110 and the second battery cell 120 are in the first equalization stage.

For example, during the charging process, the duty ratio of the control signal is adjusted to adjust the time ratio of the first charging phase and the first equalizing phase, and further adjust the charging speed, so as to improve the charging control flexibility of the power supply module 100.

In some embodiments, a control unit electrically connected to the first battery cell 110 and the second battery cell 120, respectively, for determining a difference between a first voltage of the first battery cell 110 and a second voltage of the second battery cell 120 when the first battery cell 110 and the second battery cell 120 are charged in the first pulse charging mode;

the control unit is further configured to control the first battery unit 110 and the second battery unit 120 to be in a first equalization stage when a difference between the first voltage and the second voltage is greater than or equal to a preset difference;

and a control unit for controlling the first battery unit 110 and the second battery unit 120 to be in a first charging stage when a difference between the first voltage and the second voltage is smaller than a preset difference.

The predetermined difference may be less than or equal to 50 millivolts.

It is noted that as the degree of aging of the first battery cell 110 and the second battery cell 120 gradually increases, the difference between the charging speed of the first battery cell 110 and the charging speed of the second battery cell 120 may become more significant. Therefore, when the proportion of time occupied by the charging phase in one charging cycle is constant, the difference between the first voltage and the second voltage may increase.

When the first and

second battery cells

110 and 120 are charged in the first pulse charging mode, the control unit may determine a difference between a first voltage of the first battery cell 110 and a second voltage of the second battery cell 120 at any time.

For example, when the control unit determines a difference between a first voltage of the first battery cell 110 and a second voltage of the second battery cell 120 in the first charging phase, and the difference between the first voltage and the second voltage is greater than or equal to a preset difference, the control unit may control the first battery cell 110 and the second battery cell 120 to switch from the first charging phase to the first equalization phase.

For another example, when the control unit determines a difference between a first voltage of the first battery cell 110 and a second voltage of the second battery cell 120 in the first charging phase, and the difference between the first voltage and the second voltage is less than a preset difference, the control unit may control the first battery cell 110 and the second battery cell 120 to continue in the first charging phase.

In the embodiment of the present disclosure, the control unit determines the difference between the first voltage of the first battery unit 110 and the second voltage of the second battery unit 120, and controls the stage where the first battery unit 110 and the second battery unit 120 are charged in the first pulse charging mode according to the magnitude relationship between the difference between the first voltage and the second voltage and the preset difference, so as to adjust the time ratio occupied by the charging stage and the equalizing stage in time, improve the flexibility of controlling the charging of the first battery unit 110 and the second battery unit 120, and facilitate improving the equalizing effect on the first battery unit 110 and the second battery unit 120 while ensuring that the charging speed meets the user requirement.

It is understood that, in the related art, when the first battery cell 110 and the second battery cell 120 connected in series are simultaneously discharged to the power consuming components, the discharge voltage is equal to the sum of the output voltage of the first battery cell 110 and the output voltage of the second battery cell 120. Generally, the sum of the output voltage of the first battery cell 110 and the output voltage of the second battery cell 120 is greater than the input voltage of the power consuming components, and therefore, when discharging is performed by the first battery cell 110 and the second battery cell 120 connected in series, a buck discharging circuit (for example, a discharging IC with a buck ratio of 2: 1) or a buck-boost circuit (buck-boost IC) needs to be connected between the output terminals of the first battery cell 110 and the second battery cell 120 connected in series and the power consuming components, which may reduce the discharging efficiency of the power supply module 100.

In the embodiment of the present disclosure, the power supply module 100 discharges through the first battery unit 110 and the second battery unit 120 connected in parallel, and there is no need to provide an additional buck discharging prevention circuit or buck-boost circuit at the power output end and the quality inspection of the power consuming module, and the power consuming module directly takes power from the node where the positive electrode of the first battery unit 110 and the positive electrode of the second battery unit 120 are connected in parallel, which is beneficial to improving the discharging efficiency of the power supply module 100.

It should be noted that, in the present embodiment, when the first pulse charging mode is switched between the first charging phase and the first equalizing phase, both the first battery cell 110 and the second battery cell 120 can be equivalent to a large capacitor. Taking the first battery unit 110 as an example, the equivalent capacitance of the first battery unit 110 is CF, and the equivalent impedance of the first battery unit 110 is R_eThe impedance of the equivalent field effect transistor of the first battery unit 110 is RDS_ONIf the impedance of the printed circuit board connecting the equivalent elements in the equivalent circuit of the first battery cell 110 is RPCB and the switching frequency of the first pulse control signal switching between the charging stage and the equalizing stage is FSW, the following are:

in general, RDS_ONAnd RPCB value is small, for equivalent impedance R_eThe effect of (a) is negligible. The equivalent impedance of the first battery cell 110 is mainly related to the equivalent capacitance and the switching frequency. When the switching frequency is constant, the larger the equivalent capacitance value of the first battery cell 110 is, the smaller the equivalent impedance is, the higher the charging efficiency of the first battery cell 110 is, the smaller the heat generation is, and the faster the charging speed of the first battery cell 110 is. Therefore, one or more batteries with larger equivalent capacitance values can be used to form the first battery unit 110, thereby increasing the charging speed.

In some embodiments, the control unit is further configured to control to charge the power supply module 100 in the second pulse charging mode when the charging power supported by the current charging mode is less than the preset power; wherein the first battery cell 110 and the second battery cell 120 are connected in parallel, the second pulse charging pattern having alternating second charging phases and second equalization phases; in the second charging stage, the first switching element 111, the second switching element 112 and the fourth switching element 114 are turned on, and the third switching element 113 is turned off; in the second equalization stage, the first switching element 111 and the third switching element 113 are turned off, and the second switching element 112 and the fourth switching element 114 are turned on.

When the charging power supported by the current charging mode is less than the preset power, the current charging mode can be considered as a slow charging mode. In the slow charging mode, the voltage input to the power supply assembly 100 through the power input terminal 101 may be slightly higher than the rated voltage of the first battery cell 110 or the rated voltage of the second battery cell 120. The slow charging mode can be considered as a low-voltage direct charging scheme.

When the first and

second battery cells

110 and 120 are charged in the second pulse charging mode, the second and fourth switching

parts

112 and 114 are turned on, the third switching part 113 is turned off, and the control unit controls the first switching part 111 to be switched on and off at certain intervals.

Specifically, referring to fig. 7, in the second charging stage, the first switching part 111, the second switching part 112, and the fourth switching part 114 are turned on, and the third switching part 113 is turned off, and the first battery cell 110 and the second battery cell 120 are charged in parallel. Referring to fig. 3b, in the second balancing stage, the first switching element 111 and the third switching element 113 are turned off, the second switching element 112 and the fourth switching element 114 are turned on, and the first battery cell 110 and the second battery cell 120 are balanced in parallel.

In some embodiments, the control unit is further configured to control the power supply module 100 to be charged in the constant current and constant voltage charging mode when the charging power supported by the current charging mode is less than the preset power.

In the constant current and constant voltage charging mode, the control unit controls the first switching element 111, the second switching element 112, and the fourth switching element 114 to be turned on, and the third switching element 113 to be turned off, so that the first battery cell 110 and the second battery cell 120 are in a parallel charging state, as shown in fig. 7. That is, the process of charging the first battery cell and the second battery cell in the constant current and constant voltage charging mode is equivalent to charging the first battery cell 110 and the second battery cell 120 in the second charging phase of the second pulse charging mode in the whole process.

It should be noted that the charging current in the constant-current constant-voltage charging mode may be different from the charging current in the second charging phase, and the charging voltage in the constant-current constant-voltage charging mode may be different from the charging voltage in the second charging phase in the second pulse charging mode. For example, the first battery cell 110 and the second battery cell 120 connected in parallel may be charged in a constant voltage and constant current charging mode as shown in fig. 4. When the power supply module 100 is charged in the constant-current constant-voltage charging mode, the voltage input to the power supply module 100 through the power input terminal 101 may be slightly higher than the rated voltage of the first battery cell 110 or the rated voltage of the second battery cell 120.

In some embodiments, power supply assembly 100 further comprises:

the voltage reduction unit is electrically connected with the control unit and connected with the first branch in parallel, and is used for converting the first input voltage received by the power input end 101 into a second input voltage when the charging power supported by the current charging mode is less than the preset power; wherein the second input voltage is less than the first input voltage, the second input voltage is used to charge the first battery cell 110 and the second battery cell 120 connected in parallel, the first switching element 111 and the third switching element 113 are turned off, and the second switching element 112 and the fourth switching element 114 are turned on.

The voltage dropping unit may include: a voltage dropping circuit (buck IC).

In some embodiments, power supply assembly 100 further comprises at least one of:

a first capacitor unit connected between the power input terminal 101 and the first branch 103;

a second capacitor unit connected between the positive electrode of the second battery unit 120 and the power output terminal 102;

and a third capacitor unit connected in parallel with the first battery unit 110.

Specifically, the first capacitor unit is connected between the power input terminal 101 and the first switching element 111.

When switching between the equalization phase and the charging phase of the first pulse charging mode, the voltage received at the power supply input 101 changes abruptly, which may cause voltage oscillations in the power supply assembly 100.

By arranging the first capacitor unit between the power input terminal 101 and the first branch 103, a stable voltage can be supplied to the first battery unit 110 and the second battery unit 120 when switching from the equalization stage to the charging stage, thereby ensuring charging safety.

When the power supply module 100 is charged in the first pulse charging mode and the power output terminal supplies power to the power consuming module, the voltage of the positive electrode of the second battery unit 120 may suddenly change to cause voltage oscillation when the first equalization stage and the first charging stage are switched.

By providing the second capacitor unit between the positive electrode of the second battery unit 120 and the power output terminal, when the power supply module 100 is charged in the first pulse charging mode and the power supply module 100 simultaneously supplies power to the power consuming modules, a stable voltage can be supplied to the power consuming modules, thereby ensuring safety of discharge.

Similarly, when switching between the first equalization phase and the first charging phase, the voltage of the positive electrode of the first battery cell 110 may abruptly change, possibly causing damage to the first battery cell 110.

Through the third capacitor unit arranged in parallel with the first battery unit 110, the first battery unit 110 can be protected when switching between the first equalization stage and the first charging stage.

Fig. 8 is a block diagram illustrating an electronic device 200 according to an example embodiment. Referring to fig. 8, the electronic device 200 includes:

a power supply assembly 100 as provided by embodiments of the present disclosure;

and a functional component 210 electrically connected to the power supply component 100, for receiving the electric power provided by the power supply component 100 and performing a preset function.

The electronic device 200 may include: the mobile terminal, the fixed terminal, the intelligent wearable equipment or the intelligent home equipment and the like.

The functional components 210 may include: a display component, an audio output component, a vibration component or a control component, etc.

Taking the display module as an example, the display module may include: a foldable display screen.

The display screen includes a first display area and a second display area. When the display screen is in a folded state, the display surface orientation of the first display area and the display surface orientation of the second display area are different. When the display screen is in the unfolded state, the display surface of the first display area and the display surface of the second display area are oriented in the same direction.

The first battery cell 110 may be disposed at the back of the first display region. The back surface of the first display area is opposite to the display surface of the first display area.

The second battery cell 120 may be disposed at the rear of the second display region. The back surface of the second display area is opposite to the display surface of the second display area.

It can be understood that, generally, the larger the capacity of the battery unit, the larger the size of the battery unit, which in turn leads to the increase in volume or thickness of the electronic device equipped with the battery unit, and is not favorable for the lightness, thinness and portability of the electronic device.

By disposing the first battery unit 110 and the second battery unit 120 on the back of different display areas of the foldable display screen, the thickness of a single display area in the foldable display screen can be reduced, as compared to disposing a thicker battery unit on the back of the foldable display screen.

Fig. 9 is a flowchart illustrating a charging control method applied to an electronic device including a first battery cell and a second battery cell according to an exemplary embodiment. Referring to fig. 9, the method includes the steps of:

s11: determining the charging power supported by the current charging mode;

s12: when the charging power supported by the current charging mode is greater than or equal to the preset power, charging the first battery unit and the second battery unit in a first pulse charging mode;

wherein the first pulsed charging mode has alternating first charging phases and first equalization phases; in a first charging stage, the first battery unit and the second battery unit are charged in series; in the first equalization stage, the first battery unit and the second battery unit are connected in parallel for equalization.

In some embodiments, the charging control method may be applied to a processor including the electronic device, and the processor may include: a central processing unit or microcontroller, etc.

In other embodiments, the charging control method may be applied to a charging controller (charger) electrically connected to the power supply module 100.

In other embodiments, the charging control method may also be applied to a control unit of the power supply module 100.

According to the charging control method provided by the embodiment of the disclosure, when the charging power supported by the current charging mode is greater than the preset power, the charging is performed by adopting the first pulse charging mode, so that the charging current in the first charging stage can be increased, and the charging speed of the first battery unit and the second battery unit is increased.

In addition, in the first equalization stage, the first battery unit and the second battery unit are temporarily stopped from being charged, so that the increase of heat productivity caused by the increase of charging current can be reduced, the charging safety is ensured, and the aging speed of the first battery unit and the second battery unit is reduced.

Further, in a first equalization stage, the first battery unit and the second battery unit are equalized, namely the first battery unit and the second battery unit are equalized in the charging process, so that the voltage difference between the first battery unit and the second battery unit is favorably reduced, the first battery unit and the second battery unit can be fully charged when charging is completed, the charging effect is better, and the duration of the electronic equipment is favorably prolonged.

In some embodiments, the above method further comprises: a first voltage of the first battery cell and a second voltage of the second battery cell are detected.

S12 includes: when the difference value between the first voltage and the second voltage is larger than or equal to a preset difference value, controlling the first battery unit and the second battery unit to be in a first equalization stage;

and when the difference value of the first voltage and the second voltage is smaller than a preset difference value, controlling the first battery unit and the second battery unit to be in a first charging stage.

The first voltage of the first battery unit and the second voltage of the second battery unit are detected, the stage where the first battery unit and the second battery unit are charged in the first pulse charging mode is controlled according to the size relation between the difference value of the first voltage and the second voltage and the preset difference value, the time proportion occupied by the charging stage and the equalizing stage can be adjusted in time, the charging control flexibility of the first battery unit and the second battery unit is improved, the charging speed is guaranteed, the user requirements are met, and meanwhile the equalizing effect of the first battery unit and the second battery unit is improved.

In some embodiments, the method further comprises:

when the charging power supported by the current charging mode is smaller than the preset power, the first battery unit and the second battery unit are charged in a second pulse charging mode; the first battery unit and the second battery unit are connected in parallel, the charging voltage of the second pulse charging mode is smaller than that of the first pulse charging mode, and the second pulse charging mode is provided with a second charging stage and a second equalizing stage which are alternated; in a second charging stage, the first battery unit and the second battery unit are charged in parallel; and in the second equalization stage, the first battery unit and the second battery unit are equalized in parallel.

In some embodiments, the method further comprises:

when the charging power supported by the current charging mode is smaller than the preset power, converting a first input voltage received by the electronic equipment into a second input voltage, wherein the second input voltage is smaller than the first input voltage; the second input voltage is used for charging the first battery unit and the second battery unit which are connected in parallel.

It should be noted that the electronic device may further include: a buck charge controller (buck charge), for example, a charging chip of the electronic device platform system itself. The charging control method provided by the embodiment of the disclosure can be used in parallel with the method provided in the step-down charging controller.

Specifically, when the current charging mode includes a trickle charge, a pre-charge, a large-current charging phase, and a constant-voltage charging phase before the end of the charge, the first and second battery cells connected in parallel may be charged using the step-down charger in the trickle charge, the pre-charge, and the constant-voltage charging phase before the end of the charge, and the first and second battery cells may be charged using the first pulse charging mode in the large-current charging phase.

The charging current for the high current charging phase may be greater than or equal to 5 amps, for example, may be 6 amps, 10 amps, or the like.

Fig. 10 is a block diagram illustrating an apparatus 800 for charge control according to an example embodiment. For example, the apparatus 800 may be a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, an exercise device, a personal digital assistant, and so forth.

Referring to fig. 10, the apparatus 800 may include one or more of the following components: a processing component 802, a memory 804, a power component 806, a multimedia component 808, an audio component 810, an input/output (I/O) interface 812, a sensor component 814, and a communications component 816.

The processing component 802 generally controls overall operation of the device 800, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. The processing components 802 may include one or more processors 820 to execute instructions to perform all or a portion of the steps of the methods described above. Further, the processing component 802 can also include one or more modules that facilitate interaction between the processing component 802 and other components. For example, the processing component 802 can include a multimedia module to facilitate interaction between the multimedia component 808 and the processing component 802.

The memory 804 is configured to store various types of data to support operations at the apparatus 800. Examples of such data include instructions for any application or method operating on device 800, contact data, phonebook data, messages, pictures, videos, and so forth. The memory 804 may be implemented by any type or combination of volatile or non-volatile storage devices, such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disks.

Power component 806 provides power to the various components of device 800. The power assembly 806 may include: a power management system, one or more power sources, and other components associated with generating, managing, and distributing power for the device 800.

The multimedia component 808 includes a screen that provides an output interface between the device 800 and a user. In some embodiments, the screen may include a Liquid Crystal Display (LCD) and a Touch Panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive an input signal from a user. The touch panel includes one or more touch sensors to sense touch, slide, and gestures on the touch panel. The touch sensor may not only sense the boundary of a touch or slide action, but also detect the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 808 includes a front facing camera and/or a rear facing camera. The front camera and/or the rear camera may receive external multimedia data when the device 800 is in an operating mode, such as a shooting mode or a video mode. Each front camera and/or rear camera may be a fixed optical lens system or have a focal length and optical zoom capability.

The audio component 810 is configured to output and/or input audio signals. For example, the audio component 810 includes a Microphone (MIC) configured to receive external audio signals when the apparatus 800 is in an operational mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signals may further be stored in the memory 804 or transmitted via the communication component 816. In some embodiments, audio component 810 also includes a speaker for outputting audio signals.

The I/O interface 812 provides an interface between the processing component 802 and peripheral interface modules, which may be keyboards, click wheels, buttons, etc. These buttons may include, but are not limited to: a home button, a volume button, a start button, and a lock button.

The sensor assembly 814 includes one or more sensors for providing various aspects of state assessment for the device 800. For example, the sensor assembly 814 may detect the open/closed status of the device 800, the relative positioning of components, such as a display and keypad of the device 800, the sensor assembly 814 may also detect a change in the position of the device 800 or a component of the device 800, the presence or absence of user contact with the device 800, the orientation or acceleration/deceleration of the device 800, and a change in the temperature of the device 800. The sensor assembly 814 may include a proximity sensor configured to detect the presence of a nearby object without any physical contact. The sensor assembly 814 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 814 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

The communication component 816 is configured to facilitate communications between the apparatus 800 and other devices in a wired or wireless manner. The apparatus 800 may access a wireless network based on a communication standard, such as WiFi, 2G, or 3G, or a combination thereof. In an exemplary embodiment, the communication component 816 receives a broadcast signal or broadcast related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, communications component 816 further includes a Near Field Communications (NFC) module to facilitate short-range communications. For example, the NFC module may be implemented based on Radio Frequency Identification (RFID) technology, infrared data association (IrDA) technology, Ultra Wideband (UWB) technology, Bluetooth (BT) technology, or other technologies.

In an exemplary embodiment, the apparatus 800 may be implemented by one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), controllers, micro-controllers, microprocessors or other electronic components for performing the above-described methods.

In an exemplary embodiment, a non-transitory computer-readable storage medium comprising instructions, such as the memory 804 comprising instructions, executable by the processor 820 of the device 800 to perform the above-described method is also provided. For example, the non-transitory computer readable storage medium may be a ROM, a Random Access Memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like.

A non-transitory computer readable storage medium, wherein instructions, when executed by a processor of a mobile terminal, enable the mobile terminal to perform the steps of the charging control method provided by the embodiments of the present disclosure.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the embodiments disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A power supply assembly, comprising:

a power supply input terminal;

a ground terminal;

2. The power supply component of claim 1,

the switching unit includes: the first switch piece, the second switch piece, the third switch piece and the fourth switch piece are sequentially connected in series between the power input end and the grounding end;

wherein, when the switching unit is in the first switching state, the first switching piece and the third switching piece are turned on, and the second switching piece and the fourth switching piece are turned off;

3. The power supply component of claim 2, further comprising:

4. A power supply component according to claim 2 or 3, further comprising:

and the power output end is connected between the second switching piece and the third switching piece.

5. The power supply component of claim 2, further comprising:

the control unit is used for controlling the power supply assembly to be charged in a second pulse charging mode when the charging power supported by the current charging mode is smaller than the preset power;

6. The power supply component of claim 5,

the control unit is further configured to control the power supply component to be charged in a constant-current and constant-voltage charging mode when the charging power supported by the current charging mode is smaller than the preset power; the first switch piece, the second switch piece and the fourth switch piece are connected, the third switch piece is disconnected, and the first battery unit and the second battery unit are connected in parallel.

7. The power supply component of claim 3, wherein the control unit is electrically connected to the first battery unit and the second battery unit, respectively, for,

8. The power supply component of claim 3, further comprising:

wherein the second input voltage is less than the first input voltage, the second input voltage is used for charging the first battery cell and the second battery cell which are connected in parallel, the first switch element and the third switch element are disconnected, and the second switch element and the fourth switch element are connected.

9. The power supply component of claim 1, further comprising at least one of:

10. An electronic device, comprising:

the power supply component of any one of claims 1 to 9;

11. A charging control method applied to an electronic device including a first battery cell and a second battery cell, the method comprising:

determining the charging power supported by the current charging mode;

wherein the first pulsed charging pattern has alternating first charging phases and first equalization phases; in the first charging phase, the first battery cell and the second battery cell are charged in series; in the first equalization stage, the first battery unit and the second battery unit are equalized in parallel.

12. The method of claim 11, further comprising:

wherein the first battery cell and the second battery cell are connected in parallel, the charging voltage of the second pulse charging mode is less than the charging voltage of the first pulse charging mode, and the second pulse charging mode has alternating second charging phases and second equalization phases in the second charging phases; in the second charging phase, the first battery unit and the second battery unit are charged in parallel; and in the second equalization stage, the first battery unit and the second battery unit are equalized in parallel.

13. The method of claim 11, further comprising

14. The method of claim 11, further comprising: detecting a first voltage of the first battery cell and a second voltage of the second battery cell;

15. The method of claim 11, further comprising:

16. A charge control device, characterized by comprising:

a processor;

a memory for storing processor-executable instructions;

wherein the processor is configured to: the executable instructions, when executed, implement the steps in the method of any one of claims 11 to 15.

17. A non-transitory computer readable storage medium having instructions which, when executed by a processor of a mobile terminal, enable the mobile terminal to perform the steps of the method of any of claims 11 to 15.