CN115701678A

CN115701678A - Charging apparatus, power receiving apparatus, charging system, and charging control method

Info

Publication number: CN115701678A
Application number: CN202110879312.4A
Authority: CN
Inventors: 黄善乐
Original assignee: Beijing Xiaomi Mobile Software Co Ltd
Current assignee: Beijing Xiaomi Mobile Software Co Ltd
Priority date: 2021-08-02
Filing date: 2021-08-02
Publication date: 2023-02-10

Abstract

The present disclosure relates to a charging apparatus, a power receiving apparatus, a charging system, and a charging control method, wherein the charging apparatus includes: a first battery assembly; the first control chip is provided with a first adjusting chip, one end of the first adjusting chip is connected with the anode of the first battery component, and the other end of the first adjusting chip is provided with an output interface; the first control chip is used for controlling the first regulating chip to boost or buck so as to regulate the charging voltage output to the power receiving equipment. In the charging device of the present disclosure, the first regulation chip may boost or step down the discharge voltage of the first battery pack under the control instruction, so as to realize the function of gear regulation. Do benefit to and promote the efficiency of discharging to do benefit to and promote the speed of charging.

Description

Charging apparatus, power receiving apparatus, charging system, and charging control method

Technical Field

The present disclosure relates to the field of charging, and in particular, to a charging device, a powered device, a charging system, and a charging control method.

Background

With the development of charging technology, the battery capacity in electronic devices is larger, and the charging speed and the charging power are also larger. The maximum charging power of the charger for charging the electronic equipment is increased from 10W to 100W or higher, the full charging time can be shortened from 2h to 0.5h or less, and the user experience is effectively improved.

In addition, in order to meet the requirements of users in the scene of inconvenient charging, electronic devices in the related art can be charged mutually. In the mutual charging mode in the related art, the charging voltage output by the power-supplying electronic device is fixed (e.g., 5V), and the power-receiving electronic device is charged according to the received fixed charging voltage, so that the charging power is low and the charging speed is slow.

Disclosure of Invention

To overcome the problems in the related art, the present disclosure provides a charging apparatus, a powered apparatus, a charging system, and a charging control method.

According to a first aspect of the embodiments of the present disclosure, there is provided a charging apparatus including:

a first battery assembly;

the first control chip is provided with a first adjusting chip, one end of the first adjusting chip is connected with the anode of the first battery component, and the other end of the first adjusting chip is provided with an output interface;

the first control chip is used for controlling the first regulating chip to boost or buck so as to regulate the charging voltage output to the powered device.

In some embodiments, the first conditioning chip includes: the voltage reduction module and the voltage boost module;

one end of the voltage reduction module is connected with the first battery pack, and the other end of the voltage reduction module is connected with the voltage boosting module through a first energy storage element.

In some embodiments, the voltage reduction module comprises: a first switch and a second switch;

a first end of the first switch is connected with the anode of the first battery pack, a second end of the first switch is respectively connected with a first end of the second switch and a first end of the first energy storage element, and a second end of the second switch is connected with the ground;

and the third end of the first switch and the third end of the second switch are both connected with the first control chip.

In some embodiments, the boost module comprises: a third switch and a fourth switch;

a first end of the third switch is connected with a second end of the first energy storage element, a second end of the third switch is respectively connected with a first end of the fourth switch and the output interface, and a second end of the fourth switch is connected with the ground;

and the third end of the third switch and the third end of the fourth switch are both connected with the first control chip.

According to a second aspect of the embodiments of the present disclosure, there is provided a power receiving apparatus connected to the charging apparatus of any one of the above through a cable; the power receiving apparatus includes:

a second battery assembly;

the second control chip is provided with a second adjusting chip, one end of the second adjusting chip is connected with the second battery assembly, the other end of the second adjusting chip is provided with an input interface, and the second adjusting chip comprises at least one switching circuit;

the second control chip is used for controlling connection or disconnection of at least one switch circuit in the second regulating chip.

In some embodiments, a first terminal of each of the switch circuits is connected to the input interface, and a second terminal of each of the switch circuits is connected to ground;

the first terminal to the second terminal of the switching circuit includes: the fifth switch, the sixth switch, the seventh switch and the eighth switch are sequentially connected in series;

the switching circuit further includes: a second energy storage element, a first end of the second energy storage element is connected between the fifth switch and the sixth switch, and a second end of the second energy storage element is connected between the seventh switch and the eighth switch.

In some embodiments, at least one of the switching circuits comprises: a first switching circuit and a second switching circuit connected in parallel.

According to a third aspect of an embodiment of the present disclosure, there is provided a charging system including the charging apparatus of any one of the above and the power receiving apparatus of any one of the above.

According to a fourth aspect of the embodiments of the present disclosure, a charging control method is provided, which is applied to the charging apparatus described in any one of the above, where the charging apparatus is connected to a power receiving apparatus through a cable; the method comprises the following steps:

acquiring first electric quantity and an initial identifier sent by a powered device, wherein the first electric quantity is used for representing the current electric quantity of the powered device, and the initial identifier is used for representing that an initial power source role of the powered device is a powered party or a power supply party;

and in response to the first electric quantity being smaller than the second electric quantity and the initial identification being the power receiver, controlling the first regulating chip to boost or buck so as to output a charging voltage for the power receiver, wherein the second electric quantity is used for representing the current electric quantity of the charging device.

In some embodiments, said controlling the first regulating chip to step up or step down comprises:

acquiring the current voltage of a second battery pack in the powered device and the conversion ratio of a second control chip;

determining a charging voltage according to the current voltage and the conversion proportion;

and controlling the first regulating chip to step down or controlling the first regulating chip to step up so as to output the charging voltage through the first regulating chip.

In some embodiments, said controlling said first regulation chip step down comprises:

and controlling the first switch and the second switch to be alternately switched on according to a preset rule, controlling the third switch to be switched on, and controlling the fourth switch to be switched off.

In some embodiments, said controlling said first regulation chip boost comprises:

and controlling the third switch and the fourth switch to be alternately switched on according to a preset rule, controlling the first switch to be switched on, and controlling the second switch to be switched off.

According to a fifth aspect of an embodiment of the present disclosure, there is provided a charging control method applied to the power receiving apparatus of any one of the above, the method including:

sending a first electric quantity and an initial identifier, wherein the first electric quantity is used for representing the current electric quantity of the powered device, and the initial identifier is used for representing that an initial power source role of the powered device is a powered party or a power supply party;

receiving a charging voltage output by a charging device;

and controlling the connection of at least one switching circuit according to the charging voltage so as to charge the second battery pack.

In some embodiments, said controlling the communication of the at least one switching circuit to charge the second battery assembly comprises:

controlling a fifth switch and a seventh switch in the switch circuit to be connected and a sixth switch and an eighth switch in the switch circuit to be disconnected so as to store the charging voltage into a second energy storage element;

and in response to the parameter of the second energy storage element meeting a set condition, controlling the fifth switch and the seventh switch in the switch circuit to be switched off and the sixth switch and the eighth switch to be switched on so as to output the charging voltage to the second battery pack through the second energy storage element.

The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects: in this disclosed battery charging outfit, first regulation chip can be under control command, and the effect that realizes the gear and adjust is stepped up or is stepped down to first battery pack's discharge voltage. Do benefit to and promote the efficiency of discharging to do benefit to and promote the speed of charging.

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 invention and together with the description, serve to explain the principles of the invention.

FIG. 1 is a schematic diagram of a circuit shown in accordance with an exemplary embodiment.

FIG. 2 is a flow chart illustrating a method according to an example embodiment.

FIG. 3 is a flow chart illustrating a method according to an example embodiment.

FIG. 4 is a flowchart illustrating a method in accordance with an example embodiment.

Fig. 5 is a block diagram illustrating an apparatus according to an example embodiment.

Fig. 6 is a block diagram of a terminal device shown according to an example 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 following exemplary examples do not represent all implementations consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the invention, as detailed in the appended claims.

In the related art mutual charging method, a charging voltage output by the power supplying electronic device is fixed (e.g., 5V), and the power receiving electronic device is charged according to the received fixed charging voltage, so that the charging power is low (e.g., 10W or less), the energy conversion efficiency is low, and the charging speed is slow.

In the related art, the reasons for the small charging power include at least:

first, a battery is usually provided in both the power supply electronic device and the power receiving electronic device. The output electric quantity of one battery is limited, and the efficiency of output voltage is influenced; one battery also affects the efficiency of power reception.

Secondly, the topology structures of the discharging circuit in the power supply electronic device and the topology structure of the power receiving circuit in the power receiving electronic device usually adopt buck voltage reduction chips with similar structures. The buck voltage reduction chip of the power supply electronic equipment outputs fixed voltage, and the power receiving electronic equipment receives the converted voltage. The maximum power of charging and receiving electricity is low, the loss is large, and the charging speed is low.

In an embodiment of the present disclosure, a charging device is provided, including a first battery assembly; the first control chip is provided with a first adjusting chip, one end of the first adjusting chip is connected with the anode of the first battery pack, and the other end of the first adjusting chip is provided with an output interface; the first control chip is used for controlling the first regulating chip to boost or buck so as to regulate the charging voltage output to the power receiving equipment. In this disclosed battery charging outfit, first regulation chip can be under control command, and the effect that realizes the gear and adjust is stepped up or is stepped down to first battery pack's discharge voltage. Do benefit to and promote the efficiency of discharging to do benefit to and promote the speed of charging.

In an exemplary embodiment, as shown in fig. 1, a charging apparatus 1 in the present embodiment includes: a first battery pack 11 and a first control chip 12.

The first control chip 12 is provided with a first adjusting chip 120, one end of the first adjusting chip 120 is connected with the positive electrode of the first battery assembly 11, and the other end of the first adjusting chip 120 is provided with an output interface 100. The first control chip 12 is used to control the first regulating chip 120 to step up or step down to regulate the charging voltage output to the powered device 2.

In this embodiment, the charging device 1 and the powered device 2 may be terminal devices such as a mobile phone, a tablet computer, and a notebook computer. The charging device 1 is a power supplier (TX) for charging, and the powered device is a power Receiver (RX) for an inter-charging process.

Wherein the first battery assembly 10 may comprise one or more batteries, and the negative terminal of the first battery assembly 10 is connected to ground. The multiple batteries can be connected in series or in series-parallel. The first battery pack including a plurality of batteries is discharged, and the discharge amount is more sufficient.

The first control chip 12 may be, for example, a charging management chip, and an OTG (reverse charging) chip is integrated in the charging management chip, so as to ensure that the device can implement wireless reverse charging. The charging management chip may be communicatively connected to a processor (e.g., AP) of the charging apparatus 1.

In an exemplary embodiment, as shown in fig. 1, the first conditioning chip 120 includes: a voltage-reducing module 121, a voltage-boosting module 122 and a first energy-storing element 123. One end of the voltage reducing module 121 is connected to the first battery assembly 11, and the other end is connected to the voltage boosting module 122 through the first energy storage element 123.

The voltage reducing module 121 may be, for example, a buck chip, and the voltage boosting module 122 may be, for example, a boost chip. The first energy storage element 123 may be, for example, an inductive element. The first control chip 12 can control the voltage decreasing module 121 to be connected or disconnected, and control the voltage increasing module 122 to be connected or disconnected.

In an exemplary embodiment, as shown in fig. 1, the voltage dropping module 121 includes: a first switch 1211 and a second switch 1212. A first end of the first switch 1211 is connected to the positive electrode of the first battery assembly 11, a second end of the first switch 1211 is connected to a first end of the second switch 1212 and a first end of the first energy storage element 123, and a second end of the second switch 1212 is connected to ground; the third terminal of the first switch 1211 and the third terminal of the second switch 1212 are both connected to the first control chip 12.

The first switch 1211 and the second switch 1212 may be power MOS transistors, for example. The description of the first, second or third terminals of the switch in the embodiments of the present disclosure is merely to distinguish different poles of the same switch, and does not limit the category of the specific poles. For example, the third terminal of the first switch 1211 and the third terminal of the second switch 1212 may be gates of MOS transistors (i.e., gates).

In one example, the first control chip 12 can control the first switch 1211 to be connected or disconnected and the second switch 1212 to be connected or disconnected, so as to connect or disconnect the voltage-reducing module 121.

In another example, the first control chip 12 may control the first switch 1211 and the second switch 1212 to be alternately turned on. For example, the first control chip 12 outputs a periodically varying signal, and in a signal period, controls the first switch 1211 to turn on the second switch 1212 and then controls the second switch 1212 to turn on the first switch 1211 and turn off.

In an exemplary embodiment, as shown in FIG. 1, the boost module 122 includes: a third switch 1221 and a fourth switch 1222. A first terminal of the third switch 1221 is connected to the second terminal of the first energy storage element 123, a second terminal of the third switch 1221 is connected to the first terminal of the fourth switch 1222 and the output interface 100, respectively, and a second terminal of the fourth switch 1222 is connected to ground. A third terminal of the third switch 1221 and a third terminal of the fourth switch 1222 are both connected to the first controller chip 12.

The third switch 1221 and the fourth switch 1222 may be power MOS transistors, for example.

In one example, the first control chip 12 may control the third switch 1221 to be turned on or off and the fourth switch 1222 to be turned on or off, thereby enabling the boost module 122 to be turned on or off.

In another example, the first control chip 12 may control the third switch 1221 and the fourth switch 1222 to be alternately turned on. For example, the first control chip 12 outputs a periodically changing signal, and in one signal period, controls the third switch 1221 to turn on the fourth switch 1222 to be turned off, and then controls the fourth switch 1222 to turn on the third switch 1221 to be turned off.

In an exemplary embodiment, the present disclosure also provides a powered device. As shown in fig. 1, the power receiving apparatus 2 is connected to the charging apparatus 1 in the foregoing embodiment by a cable 3. Wherein, the cable 3 is a c to c line (both ends of the charging line are type c interfaces), one end of the cable 3 is connected with the output port 100 of the charging device 1, and the other end is connected with the input port 200 of the powered device 2.

In this embodiment, the power receiving apparatus 2 includes: a second battery pack 21 and a second control chip 22.

The second control chip 22 is provided with a second adjusting chip 220, one end of the second adjusting chip 220 is connected with the second battery pack 21, the other end of the second adjusting chip 220 is provided with an input interface 200, and the second adjusting chip 220 comprises at least one switch circuit 221; the second control chip 22 is configured to control connection or disconnection of at least one switch circuit 221 in the second adjusting chip 220.

Wherein the second battery assembly 21 may comprise one or more batteries, and the negative terminal of the second battery assembly 21 is connected to ground. The second control chip 22 may be, for example, a charging management chip, and the charging management chip may be communicatively connected to a processor (e.g., AP) of the powered device 2. The second regulation chip 220 may be, for example, a charge pump (charge pump) circuit, and the second control chip 12 may control connection or disconnection of any one or more switch circuits 221 in the second regulation chip 220. The charge pump (charge pump) circuit may be, for example, a 2.

In an exemplary embodiment, as shown in fig. 1, a first terminal of each switch circuit 221 is connected to the input interface 200, and a second terminal of each switch circuit 221 is connected to ground.

The first terminal to the second terminal of the switch circuit 221 includes: a fifth switch 2211, a sixth switch 2212, a seventh switch 2213 and an eighth switch 2214 connected in series in this order.

As shown in fig. 1, the switch circuit 221 further includes: a second energy storage element 2215, a first end of the second energy storage element 2215 is connected between the fifth switch 2211 and the sixth switch 2212, and a second end of the second energy storage element 2215 is connected between the seventh switch 2213 and the eighth switch 2214.

The fifth switch 2211, the sixth switch 2212, the seventh switch 2213 and the eighth switch 2214 can be power MOS transistors.

The second energy storage element 2215 can be, for example, a capacitor, and the capacitance values of the capacitor in different switch circuits 221 can be the same or different. The second control chip 22 can control the on/off of the switch circuit 221 by controlling the on/off of any one or more switches of the switch circuit 221. During the process of receiving the power supply of the charging device, one switching circuit 221 is connected, or two switching circuits 221 are connected, or three switching circuits are connected.

In an exemplary embodiment, as shown in fig. 1, at least one switching circuit 221 includes: the first switch circuit a and the second switch circuit B connected in parallel will be described as an example. The first switch circuit a and the second switch circuit B have the same circuit topology.

The first end of the first switch circuit a and the first end of the second switch circuit B are respectively connected to the input interface 200, and the second end of the first switch circuit a and the second end of the second switch circuit B are respectively connected to ground. The first switch circuit a and the second switch circuit B are each provided with a fifth switch 2211, a sixth switch 2212, a seventh switch 2213 and an eighth switch 2214, respectively. The first switching circuit a is further provided with a second energy storage element 2215: capacitor element C _A And a second energy storage element 2215 is also arranged in the second switch circuit B: capacitor element C _B 。

In one example, the second control chip 22 controls the first switch circuit a or the second switch circuit B to be connected, receives the charging voltage input by the charging device 1, and inputs the charging voltage to the second battery pack 21.

In this example, the fifth switch 2211 and the seventh switch 2213 in the switch circuit 221 may be first controlled to be turned on, and the sixth switch 2212 and the eighth switch 2214 may be controlled to be turned off, so as to store the charging voltage into the second energy storage element 2215. Then, the fifth switch 2211 and the seventh switch 2213 in the control switch circuit 221 are turned off, and the sixth switch 2212 and the eighth switch 2214 are turned on, so that the charging voltage in the second energy storage element 2215 is output to the second battery assembly 21.

In another example, the second control chip 22 controls the first switch circuit a and the second switch circuit B to alternately cooperate and communicate to charge the second battery pack 21. For example, in one signal period, when the first switch circuit a is controlled to be firstly connected to charge the second battery pack 21, the second switch circuit B is disconnected. Then, the first switch circuit a is controlled to be turned off, and the second switch circuit B is controlled to be turned on to charge the second battery pack 21.

In this example, the communication mode of each switch circuit can be referred to the above example, and is not described herein again. In this example, the two switching circuits are matched to enable the charging voltage to be always stably output to the second battery pack 21, so that burrs are effectively eliminated.

In an exemplary embodiment, an embodiment of the present disclosure further provides a charging system including the charging apparatus according to any of the foregoing embodiments and the power receiving apparatus according to any of the foregoing embodiments.

In an exemplary embodiment, the present disclosure further provides a charging control method, which is applied to the charging device according to the foregoing embodiments, where the charging device is connected to the power receiving device through a cable.

As shown in fig. 2, the method of this embodiment may include:

s110, acquiring a first electric quantity and an initial identification sent by the powered device.

And S120, in response to the first electric quantity being smaller than the second electric quantity and the initial identification being the power receiving side, controlling the first regulating chip to boost or buck so as to output charging voltage for the power receiving equipment.

In step S110, the first power amount is used to represent a current power amount of the powered device, and the initial identifier is used to represent an initial power role of the powered device as a power receiver (sink) or a power supplier (source).

Referring to fig. 1, when the charging device 1 and the powered device 2 are connected via the cable 3, communication can be performed based on a charging protocol (e.g., PD protocol) to communicate power roles and power amounts. For example, the charging apparatus 1 and the power receiving apparatus 2 perform a power role by being turned on by the CC signal line in the cable 3.

In the connection initial state, the power source roles of the charging apparatus 1 and the powered apparatus 2 are random. Based on the communication data format agreed in the charging protocol, the data packet (e.g., VDM data packet) sent by the charging apparatus 1 to the powered device 2 includes the power source role (e.g., power supplier) of the charging apparatus 1. The packet (e.g., VDM packet) transmitted from the power receiving apparatus 2 to the charging apparatus 1 includes the power source role (e.g., power receiving side) of the power receiving apparatus 2.

In step S120, the second power amount is used to represent the current power amount of the charging device. After the communication, the processor of the charging apparatus 1 determines whether the power amount of the power receiving apparatus 2 satisfies the mutual charging condition based on the own power amount.

When the first power amount is smaller than the second power amount, the power amount of the charging apparatus 1 satisfies a state of charging the powered apparatus 2. The charging device 2 further communicates with the power receiving device 2 in a power role based on the amount of power.

In one example, when the initial identifier of the powered device 2 is the powered party, the charging device 1 may directly charge the powered device 2. The charging voltage may be output after being boosted or reduced by the charging apparatus 1.

In another example, when the initial identifier of the powered device 2 is the power supplier, the charging device 1 may communicate with the powered device 2 based on the charging protocol to adjust the role of power source replacement, so that the identifier of the powered device 2 becomes the power supplier. After the identifier of the charging apparatus 1 becomes the power supplying side and the identifier of the power receiving apparatus 2 becomes the power receiving side, the charging apparatus 1 charges the power receiving apparatus. The charging voltage may be boosted or reduced by the charging device 1.

In an exemplary embodiment, as shown in fig. 3, step S120 may include the steps of:

and S1201, acquiring the current voltage of a second battery pack in the powered device and the conversion ratio of a second control chip.

And S1202, determining the charging voltage according to the current voltage and the conversion ratio.

And S1203, controlling the first regulating chip to step down or controlling the first regulating chip to step up so as to output charging voltage through the first regulating chip.

In step S1201, the current voltage of the second battery pack may be collected in the powered device in real time. As shown in connection with fig. 1, the powered device 2 may also transmit the current voltage of the second battery pack 21 and the conversion ratio of the second control chip 22 based on wired connection communication between the charging device 1 and the powered device 2 through the cable 3. The conversion ratio of the second control chip 22 is related to the model or manufacturer of the powered device, and may be, for example, 2.

In step S1202, the processor of the charging device may determine the charging voltage output by itself according to the current voltage and the conversion ratio at the powered device side. For example, the current voltage of the powered device is 4V, and the conversion ratio is 2; the processor of the charging device may determine that the charging voltage output by itself should be 8V. For another example, the current voltage of the powered device end becomes 4.1V, and the conversion ratio is 2; the charging voltage of the charging device should be 8.2V.

In step S1203, a register is integrated in the first control chip 12 of the charging apparatus 1, and a plurality of voltage values may be stored in the register. The processor of the charging device 1 may call the corresponding voltage value in the register according to the charging voltage. The first control chip 12 adjusts the first regulation chip 12 according to the voltage value called by the processor, so that the first regulation chip 12 outputs the charging voltage after boosting or reducing the voltage.

In this step, as shown in fig. 1, the step-down mode may be, for example:

the first switch 1211 and the second switch 1212 are controlled to be alternately turned on according to a preset rule, the third switch 1221 is controlled to be turned on, and the fourth switch 1222 is controlled to be turned off. In this step, the preset rule may be, for example: the first control chip 12 outputs the periodically changing signal, and in one signal period, controls the first switch 1211 to turn on the second switch 1212 and then controls the second switch 1212 to turn on the first switch 1211 and turn off.

In step S1202, when the output voltage of the first battery assembly 11 is not greater than the reference charging voltage, the processor of the charging apparatus 1 issues a control signal, and the first control chip 12 controls the voltage boost module 122 in the first regulation chip 120 to boost voltage according to the control signal.

In this step, as shown in fig. 1, the boosting method may be, for example:

the third switch 1221 and the fourth switch 1222 are controlled to be alternately turned on according to a preset rule, the first switch 1211 is controlled to be turned on, and the second switch 1212 is controlled to be turned off. In this step, a preset rule is that, for example, the first control chip 12 outputs a periodically changing signal, and in one signal period, controls the third switch 1221 to turn on the fourth switch 1222 and turn off, and then controls the fourth switch 1222 to turn on the third switch 1221 and turn off.

In an exemplary embodiment, the present disclosure further provides a charging control method, which is applied to the powered device according to the foregoing embodiments, where the powered device is connected to the charging device through a cable.

As shown in fig. 4, the method of this embodiment may include the following steps:

and S210, sending the first electric quantity and the initial identification.

And S220, receiving the charging voltage output by the charging equipment.

And S230, controlling the connection of at least one switch circuit according to the charging voltage so as to charge the second battery pack.

In step S210, the powered device may transmit the first power amount and the initial identifier based on the wired connection. The first electric quantity is used for representing the current electric quantity of the powered device, and the initial identifier is used for representing the initial power role of the powered device as a powered party or a power supply party. The implementation of this step can be seen in step S110 of the above example.

In step S220, a charging voltage output by the charging device (for example, a charging voltage output for the first regulating chip) is received.

In step S230, the processor of the powered device is communicatively connected to the second control chip, and issues a corresponding control signal to the second control chip according to the charging voltage. The second control chip can control the connection of at least one switch circuit according to the control signal.

For example, in connection with the example of fig. 1, the at least one switching circuit 221 includes: a first switch circuit a and a second switch circuit B connected in parallel. The switching circuits 221 have the same circuit configuration, and each switching circuit has the same connection mode in the connected charging.

Taking the first switch circuit a as an example for illustration, in this embodiment, the step S220 may include the following steps:

and S2201, controlling the fifth switch and the seventh switch in the switch circuit to be connected and the sixth switch and the eighth switch to be disconnected so as to store the charging voltage to the second energy storage element. In this step, as shown in fig. 1, the second control chip 22 controls the fifth switch 2211 and the seventh switch 2213 to be connected, and the sixth switch 2212 and the eighth switch 2214 to be disconnected, so as to store the charging voltage in the second energy storage element 2215.

And S2202, in response to the parameter of the second energy storage element meeting a set condition, controlling the fifth switch and the seventh switch in the switch circuit to be switched off and the sixth switch and the eighth switch to be switched on so as to output the charging voltage to the second battery pack through the second energy storage element. In this step, as shown in fig. 1, the second control chip 22 controls the fifth switch 2211 and the seventh switch 2213 to be turned off, and controls the sixth switch 2212 and the eighth switch 2214 to be turned on, so as to output the charging voltage in the second energy storage element 2215 to the second battery pack 21.

In this embodiment, the first switch circuit a and the second switch circuit B may be alternately connected to charge the second battery pack 21. For details, reference may be made to the above embodiments, which are not described herein again. At this moment, two controllable switch circuits communicate, and two switch circuit complex modes can make the steady output of charging voltage to second battery pack 21 all the time, effectively eliminate the burr.

In the embodiment of the disclosure, based on the circuit topology structures of the charging device and the powered device, the charging device can realize the function of adjusting the output of the OTG multi-gear charging voltage, and the OTG external output efficiency is over 90%. The charging efficiency of the power receiving equipment can reach more than 97%. In the mutual charging process, in combination with the discharging capability of the first battery assembly and the circuit heat loss, the charging power in the present disclosure can be raised to about 33W, for example, with 4500mAh battery, 30min charging capacity is raised from 22% to 56%, effectively raising the charging speed (e.g., raising the charging speed by 250%). The power conversion efficiency can reach about 90%, for example, for a charging device and a powered device with two batteries of 4000mAh, the charging device (TX) reduces the power by 50%, and the power added by the powered device (RX) is increased from 32% to 43%. The electric quantity conversion efficiency is improved to about 87% (about 65% in the related technology) and is improved by 33%.

In an exemplary embodiment, the present disclosure further provides a charging control apparatus, which is applied to the charging device in the foregoing embodiments, and the charging device is connected to the powered device through a cable. As shown in fig. 5, the apparatus of the present embodiment includes: an acquisition module 110 and a control module 210. The apparatus of the present embodiment is used to implement the method as shown in fig. 2. The obtaining module 110 is configured to obtain a first electric quantity and an initial identifier sent by the powered device, where the first electric quantity is used to characterize a current electric quantity of the powered device, and the initial identifier is used to characterize an initial power role of the powered device as a powered party or a power supplier. The control module 210 is configured to control the first adjusting chip to step up or step down to output a charging voltage for the powered device in response to that the first power amount is smaller than the second power amount and the initial identifier is the powered party, where the second power amount is used to represent a current power amount of the charging device.

Fig. 6 is a block diagram of a terminal device. The present disclosure also provides a terminal device, for example, the device 500 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 the like.

Device 500 may include one or more of the following components: a processing component 502, a memory 504, a power component 506, a multimedia component 508, an audio component 510, an input/output (I/O) interface 512, a sensor component 514, and a communication component 516.

The processing component 502 generally controls overall operation of the device 500, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. The processing components 502 may include one or more processors 520 to execute instructions to perform all or a portion of the steps of the methods described above. Further, the processing component 502 can include one or more modules that facilitate interaction between the processing component 502 and other components. For example, the processing component 502 can include a multimedia module to facilitate interaction between the multimedia component 508 and the processing component 502.

The memory 504 is configured to store various types of data to support operation at the device 500. Examples of such data include instructions for any application or method operating on device 500, contact data, phonebook data, messages, pictures, videos, and so forth. The memory 504 may be implemented by any type or combination of volatile and 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.

The power component 506 provides power to the various components of the device 500. The power components 506 may include a power management system, one or more power sources, and other components associated with generating, managing, and distributing power for the apparatus 500.

The multimedia component 508 includes a screen that provides an output interface between the device 500 and the 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 508 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 500 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 a focal length and optical zoom capability.

The audio component 510 is configured to output and/or input audio signals. For example, audio component 510 includes a Microphone (MIC) configured to receive external audio signals when device 500 is in an operational mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signal may further be stored in the memory 504 or transmitted via the communication component 516. In some embodiments, audio component 510 further includes a speaker for outputting audio signals.

The I/O interface 512 provides an interface between the processing component 502 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 514 includes one or more sensors for providing various aspects of status assessment for the device 500. For example, the sensor component 514 may detect an open/closed state of the device 500, the relative positioning of components, such as a display and keypad of the device 500, the sensor component 514 may detect a change in position of the device 500 or a component of the device 500, the presence or absence of user contact with the device 500, orientation or acceleration/deceleration of the device 500, and a change in temperature of the apparatus 500. The sensor assembly 514 may include a proximity sensor configured to detect the presence of a nearby object in the absence of any physical contact. The sensor assembly 514 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 514 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

The communication component 516 is configured to facilitate communications between the device 500 and other devices in a wired or wireless manner. The device 500 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 516 receives a broadcast signal or broadcast associated information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 516 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 device 500 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.

A non-transitory computer readable storage medium, such as the memory 504 including instructions executable by the processor 520 of the device 500 to perform the method, is provided in another exemplary embodiment of the present disclosure. For example, the 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. The instructions in the storage medium, when executed by a processor of the terminal device, enable the terminal device to perform the above-described method.

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

It will be understood that the invention 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 invention is limited only by the appended claims.

Claims

1. A charging device, comprising:

a first battery assembly;

2. The charging apparatus according to claim 1, wherein the first regulation chip includes: the voltage reduction module and the voltage boost module;

3. The charging device of claim 2, wherein the voltage-reduction module comprises: a first switch and a second switch;

4. The charging apparatus according to claim 2, wherein the boosting module comprises: a third switch and a fourth switch;

5. A power receiving apparatus, wherein the power receiving apparatus is connected to the charging apparatus according to any one of claims 1 to 4 by a cable; the power receiving apparatus includes:

a second battery assembly;

6. The powered device according to claim 5, wherein a first end of each of the switch circuits is connected to the input interface, and a second end of each of the switch circuits is connected to ground;

7. The power receiving apparatus according to claim 6, wherein at least one of the switch circuits comprises: a first switching circuit and a second switching circuit connected in parallel.

8. A charging system comprising the charging apparatus according to any one of claims 1 to 4 and the power receiving apparatus according to any one of claims 5 to 7.

9. A charging control method applied to the charging apparatus according to any one of claims 1 to 4, wherein the charging apparatus is connected to a power receiving apparatus via a cable; the method comprises the following steps:

the method comprises the steps of obtaining a first electric quantity and an initial identification sent by a powered device, wherein the first electric quantity is used for representing the current electric quantity of the powered device, and the initial identification is used for representing that the initial power source role of the powered device is a powered party or a power supply party;

10. The charge control method according to claim 9, wherein the controlling the first regulation chip to step up or step down includes:

11. The charge control method of claim 10, wherein said controlling the first regulation chip to step down comprises:

12. The charge control method according to claim 10, wherein said controlling the first regulation chip step-up includes:

13. A charging control method applied to the power receiving apparatus according to any one of claims 5 to 7, the method comprising:

receiving a charging voltage output by a charging device;

14. The charge control method of claim 13, wherein said controlling the communication of at least one switching circuit to charge a second battery pack comprises: