CN219181211U

CN219181211U - Electronic equipment

Info

Publication number: CN219181211U
Application number: CN202223264039.3U
Authority: CN
Inventors: 李旻
Original assignee: Beijing Xiaomi Mobile Software Co Ltd
Current assignee: Beijing Xiaomi Mobile Software Co Ltd
Priority date: 2022-12-06
Filing date: 2022-12-06
Publication date: 2023-06-13
Anticipated expiration: 2032-12-06

Abstract

The present disclosure relates to an electronic device, comprising: a battery pack; the charging interface is used for receiving a charging signal; the charging module is connected between the charging interface and the battery pack, and is used for carrying out voltage reduction on the charging signal and outputting the charging signal subjected to the voltage reduction to the battery pack; the module that charges includes: a first charging branch comprising: at least one charge pump unit; a second charging branch connected in parallel with the first charging branch, the second charging branch comprising: at least one charge pump unit; the voltage conversion ratio of the charge pump unit is N:1, and N is an integer greater than or equal to 3.

Description

Electronic equipment

Technical Field

The disclosure relates to the field of charging technologies, and in particular, to an electronic device.

Background

With the rapid development of terminal equipment technology, the battery capacity of electronic equipment such as smart phones is larger and larger so as to meet the high energy consumption requirements of various applications such as mobile internet, and the conventional charging technology is used, so that the charging time is longer and longer, and the daily requirements of users cannot be met, and the rapid charging technology is generated; by using the quick charging technology, the charging time of the electronic equipment can be greatly shortened, so that the quick cruising of the electronic equipment can be realized.

In the related art, a fast charging scheme generally adopts a charging voltage of 20V to boost the charging power to 200W; in order to further improve the charging power, the circuit structure of the quick charging circuit is limited in the related art, and the charging current can be improved only by a way of improving the charging current, but the way of improving the charging current can greatly improve the charging loss of the quick charging circuit, so that the heating value of the electronic equipment is increased, and the use experience of a user is influenced.

Disclosure of Invention

To overcome the problems in the related art, the present disclosure provides an electronic device.

According to a first aspect of embodiments of the present disclosure, there is provided an electronic device, comprising:

a battery pack;

the charging interface is used for receiving a charging signal;

the charging module is connected between the charging interface and the battery pack, and is used for carrying out voltage reduction on the charging signal and outputting the charging signal subjected to the voltage reduction to the battery pack;

the module that charges includes:

a first charging branch comprising: at least one charge pump unit;

a second charging branch connected in parallel with the first charging branch, the second charging branch comprising: at least one charge pump unit; the voltage conversion ratio of the charge pump unit is N:1, and N is an integer greater than or equal to 3.

Optionally, the electronic device includes:

a motherboard and a small board;

the first charging branch circuit is located on the main board, and the second charging branch circuit is located on the small board.

Optionally, the first charging branch includes: 3 charge pump units arranged in parallel;

the second charging branch includes: 2 charge pump units arranged in parallel; wherein, the charge pump unit is: 6:2 charge pump.

Optionally, the charging interface is located on the tablet;

the electronic device includes:

one end of the first circuit board is connected with the charging interface, and the other end of the first circuit board is connected with the first charging branch on the main board;

and the first charging branch and the second charging branch are connected to the battery pack through the second circuit board.

Optionally, the electronic device includes:

a first battery connector, located on the small plate, one end of the first battery connector is connected with the battery pack, and the other end of the first battery connector is connected with the two charge pump units of the second charging branch in the small plate;

the second battery connector is positioned on the main board, one end of the second battery connector is connected with the battery pack, and the other end of the second battery connector is connected with one charge pump unit of the first charging branch circuit in the main board;

The third battery connector is positioned on the main board, the third battery connector and the second battery connector are arranged in parallel, one end of the third battery connector is connected with the battery pack, and the other end of the third battery connector is connected with the two charge pump units of the first charging branch of the main board;

wherein the charge pump unit connected to the third battery connector is different from the charge pump unit connected to the second battery connector.

Optionally, the two charge pump units of the first charging branch are arranged on the small plate in parallel, and a straight line where the charge pump unit and the charging interface are located is perpendicular to a straight line where the two charge pump units are located.

Optionally, the two charge pump units of the first charging branch are arranged on the small plate in parallel, and the two charge pump units are symmetrically distributed relative to the charging interface.

Optionally, the electronic device includes:

one end of the switch circuit is connected with the charging interface, and the other end of the switch circuit is connected with the charging module;

and the detection circuit is connected with the switch circuit and is used for detecting the charging parameter of the charging interface and controlling the on-off state of the switch circuit based on the charging parameter.

Optionally, the detection circuit includes:

the detection module is connected with the charging interface and used for detecting the charging parameters of the charging interface;

the processing module is connected with the detection module and the switch circuit and is used for outputting a first control signal to the switch circuit to control the switch circuit to be conducted when the charging parameter characterizes that the charging voltage of the charging interface is larger than or equal to a first preset voltage and the charging voltage is smaller than a second preset voltage;

and outputting a second control signal to the switching circuit to control the switching circuit to be disconnected when the charging parameter characterizes that the charging voltage of the charging interface is smaller than the first preset voltage or the charging voltage is larger than the second preset voltage.

Optionally, the switching circuit includes:

the first end of the first transistor is connected with the charging interface, and the second end of the first transistor is connected with the charging module;

the switch driving circuit is connected with the processing module and the control end of the first transistor and is used for controlling the first transistor to be conducted when the first control signal is received; and after receiving the second control signal, controlling the first transistor to be disconnected.

Optionally, the switch driving circuit includes:

a first resistor connected between a first terminal and a control terminal of the first transistor;

one end of the second resistor is connected with the control end of the first transistor;

and the control end of the second transistor is connected with the processing module, the first end of the second transistor is connected with the other end of the second resistor, and the second end of the second transistor is grounded.

Optionally, the first transistor is a PMOS transistor, and the second transistor is an NMOS transistor.

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

according to the embodiment of the disclosure, the charge pump units with the voltage conversion ratio larger than or equal to 3:1 are arranged in the first charging branch and the second charging branch in the charging module, and the charging voltage of the charging signal can be increased to be more than 30V under the condition that the charging current of the charging signal received by the charging interface is not changed by utilizing the plurality of charge pump units, so that the charging power of the electronic equipment is effectively increased, the charging time required by the electronic equipment is reduced, and the use experience of a user is improved. 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 disclosure and together with the description, serve to explain the principles of the disclosure.

Fig. 1 is a schematic circuit diagram of a charging module according to an exemplary embodiment.

Fig. 2 is a schematic diagram of a fast charging circuit shown in the related art.

Fig. 3 is a schematic diagram illustrating a layout of a charging branch of an electronic device according to an exemplary embodiment.

Fig. 4 is a schematic diagram of a circuit structure of a charging module according to an exemplary embodiment.

Fig. 5 is a charge loss disassembled schematic diagram of a charging circuit within an electronic device, according to an example embodiment.

Fig. 6 is a schematic layout diagram of a fast charging circuit of an electronic device shown in the related art.

Fig. 7 is a schematic diagram showing a charge loss dismantling of a fast charging circuit in an electronic device according to the related art.

Fig. 8 is a second schematic diagram illustrating charge loss disassembly of a fast charging circuit in an electronic device according to the related art.

Fig. 9 is a loss versus schematic diagram of a charging circuit and a fast charging circuit for a 300W charging power condition, according to an example embodiment.

Fig. 10 is a second schematic layout diagram of a charging branch of an electronic device according to an exemplary embodiment.

Fig. 11 is a schematic diagram of a circuit structure of a charging module according to an exemplary embodiment.

Fig. 12 is a circuit configuration diagram of a switching circuit according to an exemplary embodiment.

Fig. 13 is a block diagram of an electronic device, according to an example embodiment.

In the above figures: 10, a charging circuit; 11, a charging interface; 12, a charging module; 13, a switching circuit; 14, a detection circuit; 131, a first transistor; 132, a first resistor; 133, a second resistor; 134, a second transistor; 121a, a first charging branch; 121b, a second charging branch; 1211, a charge pump unit;

21, a battery pack; 22, a main board; 23, platelets; 24, a first circuit board; 25, a second circuit board;

800, an electronic device; 802, processing components; 804, memory; 806, a power supply assembly; 808, a multimedia component; 810, an audio component; 812, input/output interface; 814, a sensor assembly; 816, a communication component; 820, a processor.

Detailed Description

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

An embodiment of the present disclosure provides an electronic device, as shown in fig. 1, and fig. 1 is a schematic diagram of a circuit structure of a charging circuit according to an exemplary embodiment. The electronic device includes:

a battery pack 21;

a charging interface 11 for receiving a charging signal;

the charging module 12 is connected between the charging interface 11 and the battery pack 21, and is configured to perform a step-down process on the charging signal, and output the step-down processed charging signal to the battery pack 21;

the charging module 12 includes:

the first charging branch 121a includes: at least one charge pump unit 1211;

a second charging branch 121b connected in parallel with the first charging branch 121a, the second charging branch 121b including: at least one charge pump unit 1211; wherein the voltage conversion ratio of the charge pump unit 1211 is n:1, which is an integer greater than or equal to 3.

The electronic device shown in the embodiment of the disclosure may be: smart phones, tablet computers, or wearable electronic devices, etc.

The electronic device includes: the battery pack, the charging interface and the charging module;

the battery pack can provide power for the electronic equipment to maintain the operation of the electronic equipment; the battery pack may be: a lithium battery or a sodium battery, etc. can store electric quantity.

Here, the battery pack is a single-cell battery or a battery with multiple cells connected in series.

The battery pack may include: the battery cell comprises a shell, a battery cell wrapped in the shell and positive and negative lugs arranged on the shell.

The charging interface can be connected with an external adapter and receives a charging signal provided by the adapter; the charging interface may be: lightning Dock (USB) interface, universal serial bus (Universal Serial Bus, USB) based Micro USB interface, USB Type-C interface, etc., as embodiments of the present disclosure are not limited thereto.

The adapter is a device for converting a power supply; the charging interface of the charging circuit is connected with the power supply through the adapter, and can receive a charging signal obtained after the power supply circuit is transformed by the adapter.

In the embodiment of the disclosure, the charging module is provided with an input end and an output end, the input end of the charging module can be connected with the charging interface, and the output end of the charging module is connected with the battery pack.

And after receiving the charging signal input from the charging interface, the charging module performs voltage reduction processing on the charging signal and transmits the charging signal subjected to the voltage reduction processing into the battery pack so as to charge the battery pack.

It should be noted that, in order to increase the charging power of the electronic device, the charging voltage of the charging signal received by the charging interface is generally higher than the rated voltage of the battery to be charged, and after the charging module receives the charging signal, the charging module needs to perform a step-down process on the charging signal, so that the charging voltage of the charging signal after the step-down process can be adapted to the rated voltage of the battery pack, and thus the battery pack is charged by using the charging signal after the step-down process.

In an embodiment of the disclosure, the charging module includes: the first charging branch circuit and the second charging branch circuit are connected in parallel between the charging interface and the battery pack.

And at least one charge pump unit is arranged in each of the first charging branch and the second charging branch.

The charge pump unit is also called an inductance-free DC-DC converter, and the voltage and current are converted by using a capacitor as an energy storage element, so that the output voltage of the charge pump unit can be reduced and the output current of the charge pump unit can be increased. The charge pump unit can reduce the charging voltage of the charging signal input by the charging interface in the charging process, reduce the power loss, improve the charging conversion efficiency, and adjust the standardized current input by the charging interface according to the actual demand so as to adapt to different types of batteries or charging modes. However, the charge pump unit generates higher heat during the charging process, and if the positions of the charge pump units in the charging module are concentrated, the local heating is serious during the charging process.

In the embodiment of the disclosure, a plurality of charge pump units are respectively arranged in the first charging branch and the second charging branch; it can be appreciated that the first charging branch and the second charging branch can be respectively arranged at different positions in the electronic equipment, so that the positions of a plurality of charge pump units in the electronic equipment are relatively dispersed, the situation of serious local heating is facilitated to be slowed down, and the use experience of a user is improved.

Here, the number of charge pump units in the first charging branch and the second charging branch may be the same or different, which is not limited by the embodiment of the present disclosure. The total number of the charge pump units within the charging module is determined by the charging power required by the charging circuit.

In an embodiment of the disclosure, the voltage conversion ratio of the charge pump unit is: and N is 1, wherein N is an integer greater than or equal to 3.

Here, the voltage conversion ratio of the charge pump unit is used to indicate a conversion ratio between an input voltage of the charge pump unit and an output voltage of the charge pump unit.

It should be noted that, in the related art, the charging voltage of the fast charging circuit is usually 10V or 20V, and the charging power is mainly concentrated at 11V/6a 67w, 20V/6a 120w, and 20V/10a 200w. As shown in fig. 2, fig. 2 is a schematic diagram of a fast charging circuit shown in the related art. The fast charging circuit realizes high-power charging of the fast charging circuit by connecting 3 charge pumps with voltage conversion ratio of 2:1 in parallel.

When the charging voltage of the charging signal input to the fast charging circuit is 20V and the charging current is 10A, the charging power of 200W can be achieved.

On the other hand, although the charging power of the quick charging circuit can be theoretically further improved by increasing the charging current, in practical application, the limitation of the charging cable material and thickness on the current and the limitation of the charging interface of the electronic device on the input current are limited, so that the upper limit of the charging power of the quick charging circuit is 200W.

On the other hand, as the charging loss and the square of the charging current are in a proportional relation, although the charging parameters of the charging signals received by the charging interface can be increased from 20V/6A to 20V/10A by utilizing the quick charging circuit, the charging current of the quick charging circuit is increased by 1.7 times, but the heat loss of the whole quick charging circuit is increased by 2.8 times, and the heat dissipation of electronic equipment is more challenging.

Based on this, according to the embodiment of the disclosure, the charge pump units with the voltage conversion ratio greater than or equal to 3:1 are arranged in the first charging branch and the second charging branch in the charging module, and the charging voltage of the charging signal is increased to more than 30V under the condition that the charging current of the charging signal received by the charging interface is not changed by utilizing the plurality of charge pump units, so that the charging power of the electronic equipment is effectively increased, the charging time required by the electronic equipment is reduced, and the use experience of a user is improved.

Optionally, as shown in fig. 3, fig. 3 is a schematic diagram illustrating a layout of a charging branch of an electronic device according to an exemplary embodiment. The electronic device includes:

a main board 22 and a small board 23;

wherein the first charging branch 121a is located on the main board 22, and the second charging branch 121b is located on the small board 23.

In an embodiment of the present disclosure, the electronic device includes: a motherboard and a small board;

it should be noted that the main board and the small board are two circuit boards for assembling different components inside the electronic device; for example, the motherboard may be integrated with one or more of a processor, a memory, a camera module, a sensor module; the tablet may incorporate one or more of a speaker, microphone, and keys.

The motherboard and the platelet are positioned differently within the electronic device. For example, the main board may be disposed on an upper portion of the electronic device, and close to a position of an upper frame of the electronic device; the small plate can be arranged at the lower part of the electronic equipment and close to the position of the lower frame.

The first charging branch in the charging module can be located on the main board, and the second charging branch in the charging module can be located on the small board.

It can be appreciated that the charging circuit is one of the main heating sources in the charging process, and the two charging branches in the charging module are respectively arranged on the circuit boards at different positions, so that the heat dissipation can be performed by fully utilizing the metal heat conduction performance of the circuit boards, the heat dissipation effect is improved, the situation of serious local heating is reduced, and the use experience of a user is improved.

Alternatively, as shown in fig. 4, fig. 4 is a schematic diagram of a circuit structure of a charging module according to an exemplary embodiment.

The first charging branch 121a includes: 3 charge pump units 1211 arranged in parallel;

the second charging branch 121b includes: 2 charge pump units 1211 arranged in parallel; wherein the charge pump unit 1211 is: 6:2 charge pump.

In an embodiment of the present disclosure, the first charging branch includes: 3 charge pump units, wherein the 3 charge pump units are arranged in parallel; and the second charging branch circuit comprises: 2 said charge pump units, and said 2 charge pump units are arranged in parallel.

Here, the charge pump unit is a 6:2 charge pump; it is understood that the voltage conversion ratio of the 6:2 charge pump is 3:1.

It should be noted that the 6:2 charge pump shown in the embodiments of the present disclosure is applicable to a battery pack with dual cells connected in series. Because the rated voltage of the single cell is 5V, the rated voltage of the battery pack with the serial double cells is 10V, and the charging voltage of the charging signal which is allowed to be accessed by the charging interface can be increased by 30V by utilizing the 6:2 charge pump unit; and through 5 parallelly connected 6:2 charge pumps in the first branch circuit that charges with the second branch circuit for charging circuit's charge power can reach 300W, effectively promotes charging circuit's charge efficiency, promotes user's use experience.

Optionally, as shown in fig. 3, the charging interface 11 is located on the small board 23;

the electronic device includes:

a first circuit board 24, wherein one end of the first circuit board 24 is connected with the charging interface 11, and the other end is connected with the first charging branch 121a on the main board 22;

a second circuit board 25, the first charging branch 121a and the second charging branch 121b being connected to the battery pack 21 through the second circuit board 25.

In an embodiment of the present disclosure, the electronic device includes: a first circuit board and a second circuit board;

the input end of the first circuit board is connected with the charging interface on the small board, and the output end of the first circuit board is connected with the first charging branch circuit on the main board and is used for transmitting the charging signal received by the charging interface to the first charging branch circuit;

The battery pack can be fixedly arranged on the second circuit board, the battery pack is connected with the second circuit board, the first charging branch of the main board and the second charging branch of the small board are connected with the second circuit board, and the connection between the first charging branch and the battery pack and the connection between the second charging branch and the battery pack are realized through the second circuit board; the charging signals which are subjected to the step-down processing of the first charging branch circuit and the second charging branch circuit are conveniently transmitted into the battery pack, and the battery pack is charged.

In some embodiments, the second circuit board may include: the battery pack comprises a second circuit board body and an accommodating space formed in the second circuit board body, wherein the accommodating space is used for accommodating the battery pack, and the battery pack is electrically connected with the second circuit board body.

The first circuit board is connected with the main board and the small board through the main and auxiliary board connectors, and the second circuit board is connected with the main board, the small board and the battery pack through the battery connectors. Wherein the primary and secondary Board connectors and the battery connector are Board-To-Board (BTB) connectors.

Because the first charging branch is located on the main board, the second charging branch and the charging interface of the charging circuit are located on the small board, the first charging branch and the second charging branch can be electrically connected with the charging interface and the battery pack by using the first circuit board and the second circuit board.

5-7, FIG. 5 is a charge loss disassembled schematic diagram of a charge module within an electronic device, according to an example embodiment; fig. 6 is a schematic layout diagram of a fast charging circuit of an electronic device shown in the related art; fig. 7 is a schematic diagram showing a charge loss dismantling of a fast charging circuit in an electronic device according to the related art.

As can be seen from fig. 5, in the charging circuit according to the embodiment of the disclosure, the main board loss is about 3.142W, the small board loss is about 3.21W, and the loss of the first circuit board and the second circuit board is about 0.288W, that is, the total loss of the electronic device provided with the charging circuit during charging is about 6.64W.

As can be seen from fig. 7, the fast charging circuit shown in the related art has a main board loss of about 2.593W, a small board loss of about 2.517W, and a loss of about 0.338W in the first circuit board and the second circuit board, that is, the total loss of the electronic device provided with the fast charging circuit during charging is about 5.448W.

Therefore, compared with the electronic device provided with the fast charging circuit, the electronic device provided with the charging circuit in the embodiment of the disclosure increases the charging voltage of the received charging signal from 20V to 30V, increases the charging power from 200W to 300W, and increases the total loss of the charging circuit by only 1.2W in the whole charging process.

As shown in fig. 8-9, fig. 8 is a second schematic diagram illustrating charge loss disassembly of a fast charging circuit in an electronic device according to the related art; fig. 9 is a loss versus schematic diagram of a charging module and a fast charging circuit for a 300W charging power condition according to an exemplary embodiment.

As can be seen from fig. 8, in the case where the charging power is 300W, the charging loss of the charging circuit shown in the embodiment of the disclosure is reduced by 1.3W compared to the fast charging circuit.

Optionally, as shown in fig. 3 and 5, the electronic device includes:

a first battery connector 261 located on the small plate, one end of the first battery connector being connected with the battery pack, and the other end of the first battery connector being connected with two of the charge pump units of the second charging branch in the small plate;

a second battery connector 262 located on the main board, one end of the second battery connector being connected to the battery pack, and the other end of the second battery connector being connected to one of the charge pump units of the first charging branch in the main board;

The third battery connector 263 is located on the main board, and is arranged in parallel with the second battery connector, one end of the third battery connector is connected with the battery pack, and the other end of the third battery connector is connected with the two charge pump units of the first charging branch of the main board;

It should be noted that, because the battery pack is located on the second circuit board, the first charging branch and the second charging branch are respectively located on the main board and the small board, that is, the battery pack, the first charging branch and the second charging branch are respectively located on different circuit boards; in order to establish electrical connection between the battery pack and the first and second charging branches between different circuit boards, the disclosed embodiments may provide a plurality of battery connectors in the electronic device for connecting the second circuit board with the motherboard and the small board, respectively.

Here, the battery connector may be a BTB connector.

Because the second charging branch circuit comprises two charge pump units connected in parallel, the maximum current value of the charging signal which can be output by the second charging branch circuit is 12A; in order to realize the connection between the second charging branch circuit and the battery pack in the small plate, a battery connector (namely a first battery connector) can be arranged in the small plate, and the first battery connector allows charging signals with charging current values of 12A output by two charge pump units in the second charging branch circuit to flow into the battery pack;

Because the first charging branch circuit comprises three charge pump units connected in parallel, the maximum current value of the charging signal which can be output by the first charging branch circuit is 18A; in order to realize the connection between the first charging branch circuit and the battery pack in the main board, two battery connectors (namely a second battery connector and a third battery connector) can be arranged in the main board, and the second battery connector is connected with one charge pump unit in the first charging branch circuit and is used for allowing a charging signal with a charging current value of 6A output by the charge pump unit to flow into the battery pack;

the third battery connector is connected with the other two charge pump units in the first charging branch circuit and is used for allowing charging signals with charging current values of 12A output by the two charge pump units to flow into the battery pack;

note that, considering that the maximum current value allowed to pass through the battery connector is 12A, and the maximum charging current value of the charging signal that the charging module can output is 30A; in order to achieve that the battery pack can receive a charging signal with a charging current value of 30A, which is output by the charging module, the embodiment of the disclosure can be provided with 3 battery connectors, and the battery pack is charged by using the 3 battery connectors to achieve 30A, so that the charging speed of the electronic equipment is improved, and the charging efficiency of the electronic equipment is improved.

Alternatively, as shown in fig. 3, two charge pump units 1211 of the second charging branch 121b are disposed on the small plate 23 in parallel, and a line where one charge pump unit 1211 is located with the charging interface 11 is perpendicular to a line where two charge pump units 1211 are located.

In the embodiment of the disclosure, since the second charging branch comprises two charge pump units, and the two charge pump units are connected in parallel between the charging interface and the first battery connector;

the two charge pump units of the second charging branch circuit can be arranged on the small plate in parallel, and the straight line where one charge pump unit is located with the charging interface is perpendicular to the straight line where the two charge pump units are located, so that connection between the two charge pump units in the second charging branch circuit and the charging interface and connection between the two charge pump units and the first battery connector can be realized, and wiring complexity in the small plate can be reduced. In an embodiment of the present disclosure, the above straight line may be obtained by connecting a center of the charge pump unit with a center of the charging interface, and it is understood that the above straight line is described for convenience in clearly describing a positional relationship between devices.

Alternatively, as shown in fig. 10, fig. 10 is a second schematic layout diagram of a charging branch of an electronic device according to an exemplary embodiment. The two charge pump units 1211 of the second charging branch 121b are disposed on the small plate 23 in parallel, and the two charge pump units 1211 are symmetrically distributed with respect to the charging interface 11.

in order to make the impedance of the circuit from the two charge pump units in the second charging branch circuit to the charging interface be the same, the two charge pump units of the second charging branch circuit may be arranged on the small plate in parallel, and the two charge pump units are symmetrically distributed along the straight line where the charging interface and the first battery connector are located.

Therefore, connection between the two charge pump units in the second charging branch and the charging interface and between the two charge pump units in the second charging branch and the first battery connector can be achieved, charging signals output by the charge pump units can be transmitted through two circuits with the same impedance, and voltage consistency of the charging signals of the two circuits received by the first battery connector is improved.

Alternatively, as shown in fig. 11, fig. 11 is a schematic circuit diagram of a charging module according to an exemplary embodiment. The electronic device includes:

a switch circuit 13, wherein one end of the switch circuit 13 is connected with the charging interface 11, and the other end is connected with the charging module 12;

the detection circuit 14 is connected with the switch circuit 13, and is used for detecting a charging parameter of the charging interface and controlling the on-off state of the switch circuit 13 based on the charging parameter.

In an embodiment of the present disclosure, the charging circuit includes: a switching circuit and a detection circuit;

the switch circuit is connected in series between the charging interface and the charging module, and can be used for switching the on-off state between the charging interface and the charging module.

Illustratively, the switching circuit may include: the first end of the controlled switch is connected with the charging interface, the second end of the controlled switch is connected with the charging module, and the controlled end of the controlled switch is connected with the detection circuit;

it is understood that the controlled switch may be configured to switch between a closed state and an off state based on a control signal received by the controlled terminal, thereby switching an on-off state between the charging interface and the charging module.

The input end of the detection circuit is connected with the charging interface, and the output end of the detection circuit is connected with the switch circuit.

The detection circuit can detect the charging parameter of the charging signal input by the charging interface, and control the on-off state of the switching circuit based on the charging parameter.

Here, the charging parameters may include: charging current and/or charging voltage.

It is understood that the detection circuit may detect a charging current and/or a charging voltage of a charging signal input by the charging interface, and determine whether the charging current exceeds a preset current value and/or determine whether the charging voltage exceeds a preset voltage value based on the charging current and/or the charging voltage;

and when the charging current exceeds a preset current value and/or the charging voltage exceeds a preset voltage value, controlling the switch circuit to be turned off, so as to disconnect the charging interface and the charging module.

And when the charging current does not exceed the preset current value and the charging voltage does not exceed the preset voltage value, controlling the switch circuit to be closed, so as to conduct the connection between the charging interface and the charging module.

It can be understood that, by using the detection circuit and the switch circuit, the on-off state of the switch circuit is controlled according to the charging parameters of the charging signal input by the charging interface, so as to control the on-off state between the charging interface and the charging module, and realize the over-current and over-voltage protection of the charging module.

Optionally, the detection circuit includes:

In an embodiment of the present disclosure, the detection circuit includes: the device comprises a detection module and a processing module;

The detection module is connected with the charging interface to detect the charging parameters of the charging interface.

In some embodiments, the detection circuit may include: a voltage dividing resistor;

one end of the voltage dividing resistor is connected with the charging interface, and the other end of the voltage dividing resistor is connected with the charging module;

and two input ends of the detection module are respectively connected with the connection of the voltage dividing resistor.

It can be understood that the detection module can determine the current flowing through the voltage dividing resistor according to the voltage difference between two ends of the voltage dividing resistor and the resistance value of the voltage dividing resistor; it is understood that, since the voltage dividing resistor is connected in series with the charging module, the charging current of the charging signal received by the charging module is equal to the current flowing through the voltage dividing resistor.

In some embodiments, the detection module may be an analog-to-digital converter ADC.

The processing module is connected with the output end of the detection module and the switch circuit.

The processing module acquires the charging parameters of the charging signals detected by the detection module and outputs a first control signal or a second control signal to the switch circuit based on the charging parameters.

The first control signal is used for controlling the switch circuit to be conducted so as to conduct the connection between the charging interface and the charging module; the second control signal is used for controlling the switch circuit to be disconnected, so that the connection between the charging interface and the charging module is disconnected.

It should be noted that, in order to utilize the charging module, realize the high-power charging of the battery to be charged, and realize the overvoltage protection to the charging module, the charging parameter can be compared with a first preset voltage and a second preset voltage, and according to the comparison result, the on-off state between the charging interface and the charging module is controlled.

Here, the first preset voltage is smaller than the second preset voltage; the first preset voltage and the second preset voltage can be set according to actual requirements, for example, the first preset voltage can be 30V, and the second preset voltage can be 36V; the embodiments of the present disclosure are not limited in this regard.

The processing module obtains the charging parameter of the charging signal from the detection module, and if the charging parameter represents that the charging voltage of the charging interface is greater than or equal to a first preset voltage and the charging voltage is smaller than a second preset voltage, the processing module outputs a first control signal to the switch circuit to control the switch circuit to be conducted, so that the connection between the charging interface and the charging module is conducted.

And if the charging parameter represents that the charging voltage of the charging interface is smaller than the first preset voltage or the charging voltage is larger than the second preset voltage, outputting a second control signal to the switching circuit to control the switching circuit to be disconnected, so that the connection between the charging interface and the charging module is disconnected.

Alternatively, as shown in fig. 12, fig. 12 is a schematic circuit configuration diagram of a switching circuit according to an exemplary embodiment. The switching circuit 13 includes:

a first transistor 131, wherein a first end of the first transistor 131 is connected with the charging interface 11, and a second end of the first transistor 131 is connected with the charging module 12;

the switch driving circuit is connected with the processing module and the control end of the first transistor 131, and is used for controlling the first transistor 131 to be turned on when receiving the first control signal; after receiving the second control signal, the first transistor 131 is controlled to be turned off.

In an embodiment of the present disclosure, the switching circuit includes: a first transistor and a switch driving circuit;

the first end of the first transistor is connected with the charging interface, the second end of the first transistor is connected with the charging module, and the control end of the first transistor is connected with the output end of the switch driving circuit.

Here, the first transistor may be: PMOS tube or NMOS tube.

It can be understood that if the first transistor is a PMOS transistor, a control end of the PMOS transistor inputs a high-level signal, and the PMOS transistor is disconnected; the control end of the PMOS tube is input with a low-level signal, and the PMOS tube is conducted;

if the first transistor is an NMOS (N-channel metal oxide semiconductor) transistor, a high-level signal is input to the control end of the NMOS transistor, and the NMOS transistor is conducted; the control end of the NMOS tube is input with a low-level signal, and the NMOS tube is conducted.

The switch driving circuit is connected with the processing module and is used for outputting signals with different levels to the first transistor according to the control signals output by the processing module so as to control or disconnect the first transistor.

Alternatively, as shown in fig. 12, the switch driving circuit includes:

a first resistor 132 connected between a first terminal and a control terminal of the first transistor 131;

a second resistor 133, wherein one end of the second resistor 133 is connected to the control end of the first transistor 131;

and a second transistor 134, wherein a control end of the second transistor 134 is connected with the processing module, a first end of the second transistor 134 is connected with the other end of the second resistor 133, and a second end of the second transistor 134 is grounded.

In an embodiment of the present disclosure, the switch driving circuit includes: a first resistor, a second resistor, and a second transistor;

one end of the first resistor is connected with the first end of the first transistor, and the other end of the first resistor is connected with the control end of the first transistor;

one end of the second resistor is connected with the control end of the first transistor, and the other end of the second resistor is connected with the first end of the second transistor;

the control end of the second transistor is connected with the processing module, and the second end of the second transistor is grounded.

It can be understood that, when the second transistor is in the off state, the voltage value of the electric signal received by the control end of the first transistor is the same as the voltage value of the charging signal output by the charging interface, that is, the control end of the first transistor inputs a high-level signal;

when the second transistor is in a conducting state, the first resistor and the second resistor are connected in series between the charging interface and the grounding end, and the voltage value of an electric signal received by the control end of the first transistor is smaller than the voltage value of a charging signal output by the charging interface due to the fact that the first resistor and the second resistor are connected in series and divided, namely, a low-level signal is input to the control end of the first transistor.

It can be understood that the second transistor can switch its on-off state based on the control signal output by the processing module, so as to input signals with different levels to the control end of the first transistor, so as to control the on-off state of the first transistor, and achieve the effect of controlling the on-off state between the charging interface and the charging module.

Alternatively, as shown in fig. 12, the first transistor 131 is a PMOS transistor, and the second transistor 134 is an NMOS transistor.

In the embodiment of the disclosure, the first transistor is a PMOS transistor, a source of the PMOS transistor is connected to the charging interface, a drain of the PMOS transistor is connected to the charging module, and the first resistor is connected to the source and the gate of the PMOS transistor respectively.

The second transistor is an NMOS tube, the source electrode of the NMOS tube is grounded, and the drain electrode of the NMOS tube is connected with the second resistor.

It can be understood that, when the gate of the NMOS transistor receives the first control signal (i.e., the high level signal) output by the processing module, the NMOS transistor is turned on, the gate voltage of the PMOS transistor is smaller than the source voltage of the PMOS transistor (i.e., the gate of the PMOS transistor receives the low level signal), and the PMOS transistor is turned on, so as to turn on the connection between the charging interface and the charging module.

When the grid electrode of the NMOS tube receives a second control signal (namely a low-level signal) output by the processing module, the NMOS tube is disconnected, the grid electrode voltage of the PMOS tube is equal to the source electrode voltage of the PMOS tube (namely the grid electrode of the PMOS tube receives a high-level signal), and the PMOS is disconnected, so that the connection between the charging interface and the charging module is disconnected.

Fig. 13 is a block diagram of an electronic device, according to an example embodiment. For example, the electronic device 800 may be a mobile phone, a mobile computer, or the like.

Referring to fig. 13, the electronic device 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 communication component 816.

The processing component 802 generally controls overall operation of the electronic device 800, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. The processing component 802 may include one or more processors 820 to execute instructions to perform all or part of the steps of the methods described above. Further, the processing component 802 can include one or more modules that facilitate interactions 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 device 800. Examples of such data include instructions for any application or method operating on the electronic 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 nonvolatile memory 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 disk.

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

The multimedia component 808 includes a screen between the electronic device 800 and the user that provides an output interface. 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 input signals from a user. The touch panel includes one or more touch sensors to sense touches, swipes, and gestures on the touch panel. The touch sensor may sense not only the boundary of a touch or slide action, but also the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 808 includes a front camera and/or a rear camera. The front camera and/or the rear camera may receive external multimedia data when the device 800 is in an operational mode, such as a shooting mode or a video mode. Each front camera and rear camera may be a fixed optical lens system or have focal length and optical zoom capabilities.

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 electronic device 800 is in an operational mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signals may be further stored in the memory 804 or transmitted via the communication component 816. In some embodiments, audio component 810 further 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 a keyboard, click wheel, buttons, etc. These buttons may include, but are not limited to: homepage button, volume button, start button, and lock button.

The sensor assembly 814 includes one or more sensors for providing status assessment of various aspects of the electronic device 800. For example, the sensor assembly 814 may detect an on/off state of the device 800, a relative positioning of the components, such as a display and keypad of the electronic device 800, the sensor assembly 814 may also detect a change in position of the electronic device 800 or a component of the electronic device 800, the presence or absence of a user's contact with the electronic device 800, an orientation or acceleration/deceleration of the electronic device 800, and a change in temperature of the electronic device 800. The sensor assembly 814 may include a proximity sensor configured to detect the presence of nearby objects 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 gyroscopic sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

The communication component 816 is configured to facilitate communication between the electronic device 800 and other devices, either wired or wireless. The electronic device 800 may access a wireless network based on a communication standard, such as Wi-Fi,4G, or 5G, or a combination thereof. In one exemplary embodiment, the communication component 816 receives broadcast signals or broadcast related information from an external broadcast management system via a broadcast channel. In one exemplary embodiment, the communication component 816 further includes a Near Field Communication (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, and other technologies.

In an exemplary embodiment, the electronic device 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, microcontrollers, microprocessors, or other electronic elements for executing the methods described above.

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

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This disclosure is intended to cover any adaptations, uses, or adaptations of the disclosure following the general 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 is to be understood that the present disclosure is not limited to the precise arrangements and instrumentalities shown in the drawings, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. An electronic device, comprising:

a battery pack;

the charging interface is used for receiving a charging signal;

the module that charges includes:

A first charging branch comprising: at least one charge pump unit;

2. The electronic device of claim 1, wherein the electronic device comprises:

a motherboard and a small board;

3. The electronic device of claim 2, wherein the first charging branch comprises: 3 charge pump units arranged in parallel;

4. The electronic device of claim 3, wherein the charging interface is located on the tablet;

the electronic device further includes:

5. The electronic device of claim 4, wherein the electronic device further comprises:

6. The electronic device of claim 4, wherein two of the charge pump units of the first charging branch are disposed in parallel on the small board, and a line in which one of the charge pump units is located with the charging interface is perpendicular to a line in which the two charge pump units are located.

7. The electronic device of claim 4, wherein two of the charge pump units of the first charging branch are disposed in parallel on the small board, and wherein the two charge pump units are symmetrically distributed with respect to the charging interface.

8. The electronic device of any one of claims 1-7, further comprising:

9. The electronic device of claim 8, wherein the detection circuit comprises:

10. The electronic device of claim 9, wherein the switching circuit comprises:

11. The electronic device of claim 10, wherein the switch drive circuit comprises:

12. The electronic device of claim 11, wherein the first transistor is a PMOS transistor and the second transistor is an NMOS transistor.