CN216564606U

CN216564606U - Charger and charging equipment

Info

Publication number: CN216564606U
Application number: CN202220024773.3U
Authority: CN
Inventors: 宁鹏钢
Original assignee: Beijing Xiaomi Mobile Software Co Ltd
Current assignee: Beijing Xiaomi Mobile Software Co Ltd
Priority date: 2022-01-06
Filing date: 2022-01-06
Publication date: 2022-05-17
Anticipated expiration: 2032-01-06

Abstract

The present disclosure relates to a charger and a charging apparatus, the charger including: the conversion assembly is used for converting input alternating current into direct current; a first power supply line; the first power supply circuit and the second power supply circuit are connected in parallel at the output end of the conversion component and used for charging in parallel; and the first control circuit is connected with the first power supply circuit and the second power supply circuit and is used for adjusting the electrical parameters of the direct current output by the first power supply circuit and the second power supply circuit.

Description

Charger and charging equipment

Technical Field

The present disclosure relates to the field of electronic devices, and particularly to a charger and a charging device.

Background

With the continuous development and maturation of electronic technology, electronic devices such as mobile phones, tablet computers, portable computers and the like also become essential tools for people to live and work. At present, the requirement of users for fast charging of electronic devices is higher and higher, and the higher and higher charging speed of electronic devices has become a future development trend.

In order to improve the user experience, usually, in the design stage of the electronic device, the charging branch impedance, the charging current and the charging heating condition are simulated, and the corresponding electronic device is designed according to the simulation result to perform actual measurement, so that the optimal distribution scheme of the charging branch impedance and the charging current is determined, and the electronic device is uniformly heated in the charging process.

However, this method requires repeated simulation and actual measurement of the impedance, charging current, and charging heating of the charging branch, and is long in time, high in cost, and low in flexibility.

Disclosure of Invention

To overcome the problems in the related art, the present disclosure provides a charger and a charging apparatus.

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

the conversion assembly is used for converting input alternating current into direct current;

a first power supply line;

the first power supply circuit and the second power supply circuit are connected in parallel at the output end of the conversion assembly and used for parallel charging;

and the first control circuit is connected with the first power supply circuit and the second power supply circuit and is used for adjusting the electrical parameters of the direct current output by the first power supply circuit and the second power supply circuit.

Optionally, the first power supply line has a first impedance adjusting element, wherein a controlled end of the first impedance adjusting element is connected to the first control circuit, and an input end and an output end of the first impedance adjusting element are connected to the first power supply line, and are configured to adjust an impedance of the first power supply line according to a first control signal provided by the first control circuit;

the second power supply circuit is provided with a second impedance adjusting element, wherein a controlled end of the second impedance adjusting element is connected with the first control circuit, and an input end and an output end of the second impedance adjusting element are connected with the second power supply circuit and used for adjusting the impedance of the second power supply circuit according to a second control signal provided by the first control circuit.

Optionally, the first impedance adjusting element is a first transistor, and the second impedance adjusting element is a second transistor;

the first control circuit is connected with a second control circuit in the charging equipment and used for receiving a third control signal output by the second control circuit and adjusting the voltage value of the first control signal and the voltage value of the second control signal based on the third control signal;

wherein a voltage value of the first control signal is inversely related to an impedance of the first transistor, and a voltage value of the second control signal is inversely related to an impedance of the second transistor.

Optionally, the charger includes:

the charging interface is connected with the charging equipment;

the charging interface at least comprises:

one end of the first pin is connected with the output end of the first power supply circuit, the other end of the first pin is connected with the input end of a first charging circuit in the charging equipment, and the first pin is used for transmitting the direct current output by the first power supply circuit to the first charging circuit in the charging equipment;

one end of the second pin is connected with the output end of the second power supply circuit, the other end of the second pin is connected with the input end of a second charging circuit in the charging equipment, and the second pin is used for transmitting the direct current output by the second power supply circuit to the second charging circuit in the charging equipment;

and the third pin is used for connecting the first control circuit and the second control circuit of the charging equipment.

Optionally, the charging interface is an interface supporting a USB power transfer PD protocol, and the first control circuit and the second control circuit in the charging device communicate based on the USB PD protocol.

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

a battery;

a first charging line;

the first charging circuit and the second charging circuit are connected to the battery in parallel and used for charging the battery in parallel;

the detection assembly is used for detecting the heating temperatures of the first charging circuit and the second charging circuit;

the second control circuit is connected with the first control circuit in the charger and used for outputting a third control signal according to the heating temperatures of the first charging circuit and the second charging circuit; the third control signal is used for the first control circuit to adjust the electrical parameters of the direct current output by the first power supply circuit and the second power supply circuit in the charger.

Optionally, the charging device includes:

a first charge pump and a second charge pump;

the first charge pump is located on the first charging line, is connected between the battery and a first pin of a charging interface, and is used for converting direct current received by the first charging line and charging the battery by using the converted direct current;

the second charge pump is located on the second charging circuit, connected between the battery and the second pin of the charging interface, and used for converting the direct current received by the second charging circuit and charging the battery by using the converted direct current.

Optionally, the charging device includes:

the first protection circuit is connected in series between the first pin of the charging interface and the first charge pump and is used for performing overvoltage protection on the first charging circuit;

and the second protection circuit is connected in series between the second pin of the charging interface and the second charge pump and is used for performing overvoltage protection on the second charging circuit.

Optionally, the detection assembly includes:

the temperature detection elements are arranged at different positions on the first charging line and the second charging line and are used for acquiring heating temperatures of the different positions on the first charging line and the second charging line;

the control chip is connected with the temperature detection elements and used for acquiring the heating temperatures of a plurality of different positions acquired by the temperature detection elements and determining the position and the heating temperature of the first heating point; the first heating point is a heating point with the highest heating temperature in the charging equipment;

the control chip is connected with the second control circuit and used for controlling the second control circuit to output a third control signal according to the position and the heating temperature of the first heating point.

Optionally, the temperature detection element is a thermistor.

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

the charging device comprises a charger body, a first charging circuit, a second charging circuit and a first control circuit, wherein the charger body is provided with a first charging line and a second charging line, the first charging line is connected with the first charging circuit, the second charging line is connected with the second charging circuit, the first control circuit is connected with the second control circuit, the second control circuit is connected with the second charging circuit, and the second charging circuit is connected with the second charging circuit.

Because in the process of determining charging current distribution, the impedances of the first charging circuit and the second charging circuit in the charging equipment do not need to be adjusted, the cost and time spent in the process of determining the charging current of each charging circuit are reduced, and the flexibility is higher.

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 first schematic diagram illustrating a structure of a charger according to an exemplary embodiment.

Fig. 2 is a schematic flow chart of a charging branch current distribution shown in the related art.

Fig. 3 is a schematic diagram of a charger according to an exemplary embodiment.

Fig. 4 is a first schematic structural diagram of a charging device according to an exemplary embodiment.

Fig. 5 is a schematic structural diagram of a charging device according to an exemplary embodiment.

Fig. 6 is a schematic diagram of a third exemplary embodiment of a charging device.

Fig. 7 is a schematic diagram illustrating a configuration of a charging system according to an exemplary embodiment.

Fig. 8 is a schematic structural diagram of a charging apparatus shown in the related art.

Fig. 9 is a flow diagram illustrating a charging branch current distribution according to an example embodiment.

FIG. 10 is a schematic diagram illustrating a heat distribution of a terminal device according to an example embodiment

Fig. 11 is a block diagram illustrating a charging device apparatus 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 embodiments described in the following exemplary embodiments do not represent all embodiments 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.

The embodiment of the present disclosure provides a charger, as shown in fig. 1, fig. 1 is a schematic structural diagram of a charger shown according to an exemplary embodiment. The charger 10 includes:

a conversion assembly 11 for converting an input alternating current into a direct current;

a first power supply line 12;

a second power supply line 13, wherein the first power supply line and the second power supply line are connected in parallel at the output end of the conversion component and used for parallel charging;

and the first control circuit 14 is connected with the first power supply circuit and the second power supply circuit and used for adjusting the electrical parameters of the direct current output by the first power supply circuit and the second power supply circuit.

In an embodiment of the present disclosure, the charger includes: the conversion component can be connected with the external power interface and converts high-voltage alternating current output by the external power interface into low-voltage direct current.

Here, the high-voltage ac power may be an ac power having a voltage of 220V, and the low-voltage dc power may be a dc power having a voltage of 5V.

In some embodiments, the conversion assembly comprises:

the voltage reducing circuit is connected with the rectifying circuit;

the rectifying circuit is used for converting input high-voltage alternating current into high-voltage direct current;

and the voltage reduction circuit is used for converting the high-voltage direct current output by the rectifying circuit into low-voltage direct current.

In other embodiments, the charger includes: the output end of the power plug is connected with the input end of the conversion component; after the power plug is inserted into the external power interface, high-voltage alternating current output by the external power is input into the conversion assembly through the power plug, and the conversion assembly converts the high-voltage alternating current into low-voltage direct current.

The charger, including: a first power supply line and a second power supply line; the first power supply circuit and the second power supply circuit are connected in parallel between the output end of the conversion assembly and the output end of the charger.

After the charger is connected with the charging equipment, the first power supply circuit is connected with a first charging circuit in the charging equipment to form a first charging branch circuit; the second power supply circuit is connected with a second charging circuit in the charging equipment to form a second charging branch circuit; and the direct current output by the conversion component is used for charging the charging equipment in parallel through the first charging branch and the second charging branch.

The charger further comprises: a first control circuit; one end of the first control circuit is connected with the first power supply circuit and the second power supply circuit; the first control circuit controls the electrical parameters of the direct current output by the first power supply circuit and the second power supply circuit.

It can be understood that, since the charger generates heat due to the charging current during the charging process of the charging device, the charging device generates heat more seriously as the current value of the charging current is larger. And because the positions of the first charging branch and the second charging branch in the charging equipment are different, the heating conditions of different areas of the charging equipment are different, and the use experience of a user is reduced.

Illustratively, the first charging branch is arranged in a thicker stacked area (such as an area provided with a rear camera) in the terminal device, and the second charging branch is arranged in a thinner stacked area in the terminal device, in this case, even if the current values of the charging currents of the first charging branch and the second charging branch are the same, the heating condition of the terminal device shell can be different.

Therefore, during the design process of the charging device, the impedance of each charging branch and the charging current need to be determined. In the related art, as shown in fig. 2, fig. 2 is a schematic flow chart of charging branch current distribution shown in the related art.

In order to equalize the heating of different areas of the charging device, in the design process of the previous period, the impedance of each charging branch is simulated according to the layout positions of the first charging branch and the second charging branch in the charging device; and determining a simulation result of the charging current of each charging branch according to the impedance simulation result of each charging branch, and simulating the heating condition of the charging equipment according to the charging current of each charging branch to determine the impedance of the charging branch and the simulation result of the charging current, of which the heating condition meets the equalization requirement.

And designing the charging equipment according to the simulation result, testing the actual current distribution and heating condition of each charging branch in the charging equipment, and adjusting the impedance, charging current and other information of each charging branch according to the actual current distribution and heating condition obtained by testing.

However, the scheme of adjusting the impedance of the charging branches to realize the charging current distribution of each charging branch needs repeated simulation and actual measurement, and has low flexibility and long period.

Based on this, according to the embodiment of the disclosure, the first control circuit is arranged in the charger, and the electric parameters of the direct current output by the first power supply line and the second power supply line are adjusted through the first control circuit, so as to adjust the charging current received by the first charging line and the second charging line in the charging device, and the impedance of the first charging line and the impedance of the second charging line in the charging device do not need to be readjusted, so that the optimal charging current distribution scheme meeting the heating balance requirement of the charging device can be quickly determined from a plurality of groups of charging current distribution schemes.

Optionally, as shown in fig. 3, fig. 3 is a schematic structural diagram of a charger according to an exemplary embodiment. The first power supply line 12 is provided with a first impedance adjusting element 121, wherein a controlled end of the first impedance adjusting element 121 is connected to the first control circuit, and an input end and an output end of the first impedance adjusting element 121 are connected to the first power supply line 12, and are configured to adjust the impedance of the first power supply line 12 according to a first control signal provided by the first control circuit 14;

the second power supply line 13 is provided with a second impedance adjusting element 131, wherein a controlled end of the second impedance adjusting element 131 is connected to the first control circuit 14, and an input end and an output end of the second impedance adjusting element 131 are connected to the second power supply line 13, and are configured to adjust the impedance of the second power supply line 13 according to a second control signal provided by the first control circuit 14.

In an embodiment of the present disclosure, the charger includes: a first impedance adjusting element and a second impedance adjusting element; the first impedance adjusting element is positioned on a first power supply line, a controlled end of the first impedance adjusting element is connected with the first control circuit, and an input end and an output end of the first impedance adjusting element are connected on the first power supply line;

the second impedance adjusting element is located on a second power supply line, a controlled end of the second impedance adjusting element is connected with the first control circuit, and an input end and an output end of the second impedance adjusting element are located on the first power supply line.

Here, the first impedance adjusting element and the second impedance adjusting element may be impedance variable devices such as a controlled adjustable resistor, a transistor, and the like.

The first control circuit can control the impedance of the first impedance adjusting element through the first control signal by outputting the first control signal to the first impedance adjusting element so as to adjust the total impedance of a first charging branch formed by the first power supply line and the first charging line; therefore, under the condition that the charging voltage input by the first charging branch circuit is not changed, the current value of the charging current of the first charging branch circuit is adjusted.

The first control circuit can output a second control signal to the second impedance adjusting element and control the impedance of the second impedance adjusting element through the second control signal so as to adjust the total impedance of a second charging branch formed by the second power supply line and the second charging line; therefore, under the condition that the charging voltage input by the second charging branch circuit is not changed, the current value of the charging current of the second charging branch circuit is adjusted.

In an embodiment of the present disclosure, the first impedance adjusting element is a first transistor, and the impedance adjusting element is a second transistor.

Here, the first transistor and the second transistor may be NMOS transistors or PMOS transistors.

If the first transistor and the second transistor are NMOS transistors, the grid electrode of the first transistor is connected with the first control circuit, the drain electrode of the first transistor is connected with the input end of a first power supply circuit, and the source electrode of the first transistor is connected with the output end of the first power supply circuit; the grid electrode of the second transistor is connected with the first control circuit, the drain electrode of the second transistor is connected with the input end of a second power supply line, and the source electrode of the second transistor is connected with the output end of the second power supply line.

If the first transistor and the second transistor are PMOS transistors, the grid electrode of the first transistor is connected with the first control circuit, the source electrode of the first transistor is connected with the input end of the first power supply circuit, and the drain electrode of the first transistor is connected with the output end of the first power supply circuit; the grid electrode of the second transistor is connected with the first control circuit, the source electrode of the second transistor is connected with the input end of the second power supply circuit, and the drain electrode of the second transistor is connected with the output end of the second power supply circuit.

It should be noted that, for the NMOS transistor, when the NMOS transistor is in the conducting state, the current leaks from the drain and flows from the source; for the PMOS tube, when the PMOS tube is in a conducting state, current flows in from the source electrode and flows out from the drain electrode.

The first control circuit adjusts the impedance of the first transistor and the second transistor by outputting a first control signal to the first transistor and outputting a second control signal to the second transistor.

Here, the first control signal has a voltage value at least greater than the gate-on voltage of the first transistor, and the second control signal has a voltage value at least greater than the gate-on voltage of the second transistor. It will be appreciated that the transistor is a voltage driven device and will only be in a conducting state when the gate voltage is greater than the gate turn-on voltage.

Since the impedance of a transistor is inversely related to the voltage value of the gate voltage of the transistor, that is, the larger the voltage value of the gate voltage, the smaller the impedance of the transistor. Therefore, the first control circuit can adjust the impedances of the first transistor and the second transistor by adjusting the voltage value of the first control signal and the voltage value of the second control signal, so as to adjust the total impedance of the first charging branch circuit and the total impedance of the second charging branch circuit, and further achieve the effect of adjusting the charging currents of the first charging branch circuit and the second charging branch circuit.

In an embodiment of the disclosure, the first control circuit is connected to a second control circuit in the charging device, and the first control circuit may receive a third control signal output by the second control signal, and adjust a voltage value of the first control signal and a voltage value of the second control signal based on the third control signal.

The charging device can send a third control signal according to the heating conditions of the first charging circuit and the second charging circuit, so that the charger can adjust the first control signal and the second control signal according to the third control signal to relieve the heating condition of the charging device.

Optionally, the charger includes:

the charging interface is connected with the charging equipment;

the charging interface at least comprises:

In the embodiment of the present disclosure, the charger further includes: a charging interface; the charging interface is connected with the charging equipment and outputs direct current to the charging equipment.

The charging interface at least comprises: a first pin, a second pin and a third pin; the first pin is used for connecting the first power supply circuit and a first charging circuit, and transmitting the direct current output by the first power supply circuit to the first charging circuit so as to charge charging equipment;

the second pin is used for connecting the second power supply circuit and a second charging circuit, and transmitting the direct current output by the second power supply circuit to the second charging circuit so as to charge charging equipment;

the third pin is used for connecting a first control circuit and a second control circuit, and the charger and the charging equipment perform information interaction, so that the charger can adjust the current value of the direct current output to the first charging line and the second charging line according to the real-time heating condition of the charging equipment.

It can be understood that the first pin and the second pin may be power supply pins, the third pin may be a data pin, the first pin, the second pin and the third pin are used to establish connection between different devices in the charger and the charging device, respectively, power supply and data transmission are separated, so that transmission of charging current between the charger and the charging device is facilitated, and the charging device controls the output charging current of the charger.

In the embodiment of the present disclosure, the charging interface may be an interface supporting a USB Power Delivery (USB PD) protocol, such as a USB Type-C interface; first pin, second pin can be the VBUS pin of Type-C interface, the third pin can be the CC pin of Type-C interface.

The first control circuit and the second control circuit may communicate based on the USB PD protocol.

It should be noted that, both the charging device and the charger support the USB PD protocol, the message in the protocol layer may be modulated into a Frequency-Shift Keying (FSK) signal of 24MHz according to the USB PD protocol, and coupled to the third pin for transmission through the data line, so as to implement communication between the charger and the charging device.

The embodiment of the present disclosure provides a charging device, as shown in fig. 4, fig. 4 is a schematic structural diagram of a charging device shown according to an exemplary embodiment. The charging device 20 includes:

a battery 21;

a first charging line 22;

a second charging line 23, wherein the first charging line 22 and the second charging line 23 are connected in parallel to the battery 21, and are used for charging the battery 21 in parallel;

a detection component 24 for detecting the heat generation temperature of the first charging line 22 and the second charging line 23;

the second control circuit 25 is connected with the first control circuit in the charger and is used for outputting a third control signal according to the heating temperatures of the first charging circuit 22 and the second charging circuit 23; the third control signal is used for the first control circuit to adjust the electrical parameters of the direct current output by the first power supply circuit and the second power supply circuit in the charger.

In the embodiment of the present disclosure, the charging device may be any electronic device with a battery; the charging equipment is connected with the charger, and the charger is used for receiving the charging of the battery in the charging equipment, so that the cruising ability is met. The electronic device with a battery may be: a smart phone, a tablet computer, or a wearable electronic device, etc.

The charging apparatus includes: the charging circuit comprises a battery, a first charging circuit and a second charging circuit; the first charging circuit and the first charging circuit are connected to the battery in parallel; when the charging equipment is connected with a charger, the first charging circuit receives direct current output by a first power supply circuit in the charger, and the second charging circuit receives direct current output by a second power supply circuit in the charger, so that the battery is charged in parallel through the first charging circuit and the second charging circuit.

Here, the battery may be a lithium battery, a secondary battery, or the like that can store electricity. The battery includes: the battery comprises a shell, a battery cell wrapped in the shell and a positive electrode lug and a negative electrode lug on the shell.

It can be understood that, in order to meet the requirement of a user on quick charging of a charging device, the charging efficiency can be improved by increasing the charging power, but as the charging power increases, the charging voltage and the charging current become larger and larger, and potential safety hazards exist; this disclosed embodiment is through setting up two parallelly connected charging lines in battery charging outfit to under the unchangeable condition of charging current of charging line, increase charging power can enough reduce battery charging outfit and generate heat, can improve charge efficiency again.

In the embodiment of the present disclosure, the charging device further includes a detection component and a second control circuit, where the detection component is connected to the second control circuit.

The detection assembly can be used for detecting heating temperature values of the first charging circuit and the second charging circuit and controlling the second control circuit to output a third control signal; the second control circuit is connected with the first control circuit in the charger and transmits a third control signal to the first control circuit; the third control signal is used for the first control circuit to adjust the electrical parameters of the direct current output by the first power supply circuit and the second power supply circuit in the charger.

The heating temperature value of first charging circuit and second charging circuit can be detected through the detection assembly, and the third control signal is output to the first control circuit in the charger through the second control circuit, so that the first control circuit adjusts the voltage values of the first control signal and the second control signal according to the third control signal, and therefore the electric parameters of the direct current received by the first charging circuit and the second charging circuit are adjusted, and the problem of unbalanced heating of the charging equipment is relieved.

Alternatively, as shown in fig. 5, fig. 5 is a schematic structural diagram ii of a charging device according to an exemplary embodiment. The charging apparatus 20 includes:

a first charge pump 221 and a second charge pump 231;

the first charge pump 221 is located on the first charging line 22, is connected between the battery 21 and the first pin of the charging interface, and is configured to convert the direct current received by the first charging line 22 and charge the battery 21 by using the converted direct current;

the second charge pump 231 is located on the second charging line 23, is connected between the battery 21 and the second pin of the charging interface, and is configured to convert the direct current received by the second charging line 23, and charge the battery 21 by using the converted direct current.

In this embodiment of the present disclosure, the first charge pump is located on a first charging line, and the second charge pump is located on a second charging line, that is, the first charge pump and the second charge pump are connected in parallel.

The charge pump is also referred to as an inductance-free DC-DC converter, and the output voltage of the charge pump can be reduced and the output current of the charge pump can be increased by converting the voltage and the current using a capacitor as an energy storage element.

According to the embodiment of the disclosure, the voltage value of the direct current transmitted by the first charging circuit is reduced through the first charge pump, and the current value of the direct current transmitted by the first charging circuit is improved; the voltage value of the direct current output by the second charging circuit is reduced through the second charge pump, the current value of the direct current transmitted by the second charging circuit is improved, the direct current transmitted by the first charging circuit and the direct current transmitted by the second charging circuit are input into the battery, and the charging efficiency of the battery is improved.

For example, 20V and 3V direct currents are output by a first power supply line and a second power supply line of the charger, a first charge pump on the first charging line converts the input direct currents into 10V and 6A direct currents, a second charge pump on the second charging line converts the input direct currents into 10V and 6A direct currents, and finally the direct currents output by the first charging line and the second charging line are combined into 10V and 12A direct currents which are input into the battery, so that the battery is charged quickly.

Alternatively, as shown in fig. 6, fig. 6 is a schematic structural diagram three of a charging device according to an exemplary embodiment. The charging device 20 includes:

a first protection circuit 222, connected in series between the first pin of the charging interface and the first charge pump 221, for performing overvoltage protection on the first charging circuit 22;

and the second protection circuit 232 is connected in series between the second pin of the charging interface and the second charge pump 231, and is configured to perform overvoltage protection on the second charging circuit 23.

In an embodiment of the present disclosure, the charging device further includes: a first protection circuit and a second protection circuit; the first protection circuit is positioned on a first charging line and is connected between a first pin of the charging interface and the first charge pump in series; the second protection circuit is located on a second charging line and is connected in series between a second pin of the charging interface and the second charge pump.

Here, the first protection circuit and the second protection circuit are used for providing protection for the downstream circuit (i.e. the first charge pump and the second charge pump) to prevent the voltage transmitted to the downstream circuit from being too high, which causes damage to components in the downstream circuit.

The first protection circuit and the second protection circuit are internally provided with voltage extreme values, and when the voltages input by the first protection circuit and the second protection circuit exceed the voltage extreme values, the first protection circuit and the second protection circuit are triggered to carry out overvoltage protection operation on the first charging circuit and the second charging circuit.

Optionally, the detection assembly includes:

In the embodiment of the disclosure, the detection assembly comprises a plurality of temperature detection elements and a control chip.

The temperature detection elements are respectively arranged at a plurality of different positions of the first charging circuit and the second charging circuit so as to collect the heating temperatures of the first charging circuit and the second charging circuit at the plurality of different positions.

Here, the temperature detecting element may be a temperature sensor.

The input end of the control chip is connected with the plurality of temperature detection elements, and the output end of the control chip is connected with the second control circuit; the control chip acquires heating temperatures of a plurality of different positions from the plurality of temperature detection elements, and determines the position of a first heating point with the highest heating temperature and a heating temperature value according to the heating temperatures of the plurality of different positions; therefore, the second control circuit is controlled to output a third control signal according to the position of the first heating point and the heating temperature value.

For example, the control chip determines that a first heating point with the highest heating temperature is located near the first charging line according to the acquired heating temperatures of the plurality of different positions, and then controls the second control circuit to output a third control signal; after the first control circuit in the charger receives the third control signal, based on the third control signal, the voltage value of the first control signal can be reduced, and the voltage value of the second control signal can be increased, so that the impedance of the first transistor is increased, the current value of the direct current received by the first charging circuit is reduced, and the heat productivity is reduced; the impedance of the second transistor is reduced, the current value of the direct current received by the second charging circuit is increased, and the heat generation amount is increased.

In some embodiments, the temperature sensing element is a thermistor.

It should be noted that the thermistor may be a Negative Temperature Coefficient (NTC) thermistor, and the resistance of the NTC thermistor decreases exponentially as the Temperature increases.

The control chip can reflect the heating temperatures of a plurality of different positions through a plurality of voltage signals by acquiring a plurality of voltage signals related to the resistance value of the thermistor.

A specific example is provided below in combination with any one of the above technical solutions, as shown in fig. 7, and fig. 7 is a schematic structural diagram of a charging system according to an exemplary embodiment. The present disclosure provides a charging system, comprising: a charger and a charging device;

the charger, including:

the charging interface is connected with the charging equipment;

the charging device comprises a first power supply circuit and a second power supply circuit, wherein the first power supply circuit and the second power supply circuit are connected in parallel between the output end of a conversion assembly and the input end of the charging interface and are used for charging equipment in parallel;

the first power supply circuit is provided with a first transistor, a controlled end of the first transistor is connected with a first control circuit, and an input end and an output end of the first transistor are connected with the first power supply circuit and used for adjusting the impedance of the first power supply circuit according to a first control signal provided by the first control circuit;

the second power supply circuit is provided with a second transistor, a controlled end of the second transistor is connected with the first control circuit, and an output end of the second transistor are connected to the second power supply circuit and used for adjusting the impedance of the second power supply circuit according to a second control signal provided by the first control circuit;

the first control circuit is connected with a second control circuit in the charging equipment and used for adjusting the voltage value of the first control signal and the voltage value of the second control signal according to a third control signal output by the second control circuit and based on the third control signal;

the charging device includes:

a battery;

a first charging line;

the detection component is used for detecting the heating temperature of the first charging circuit and the second charging circuit;

the second control circuit is connected with the first control circuit in the charger and used for outputting the third control signal according to the heating temperatures of the first charging circuit and the second charging circuit;

the first charging circuit is provided with a first protection circuit and a first charge pump; the first protection circuit and the first charge pump are connected in series on the first charging line;

the second charging line is provided with a second protection circuit and a second charge pump; the second protection circuit and the second charge pump are connected in series on the second charging line.

In this example, the transition piece assembly may be an adapter, and the first power supply line, the second power supply line, and the first control circuit may be integrated within the adapter.

The charging equipment can be mobile terminal or wearable electronic equipment, and this mobile terminal includes cell-phone, notebook and panel computer etc. and this wearable electronic equipment includes intelligent bracelet, intelligent wrist-watch etc..

It should be noted that, as shown in fig. 8, fig. 8 is a schematic structural diagram of a charging apparatus shown in the related art. The charging circuit in the charging equipment can be a double-charge pump circuit; the problems of charge pump current distribution, charging equipment heating optimization and the like exist in the design of the double-charge pump circuit; at present, impedance simulation of a charging branch at an earlier stage, current distribution simulation of the charging branch, simulation of temperature change of charging equipment according to the current distribution, determination of impedance distribution and current distribution in a charging circuit according to a simulation result, and design of a circuit board and the charging equipment are mainly used.

However, simulation errors and circuit board manufacturing errors exist in actual design, the simulation results cannot truly reflect the current distribution and temperature change conditions of the charging equipment, after the charging equipment is designed, the charging equipment needs to be tested, the actual current distribution and heating conditions in the charging equipment are determined, and impedance simulation, current distribution simulation and the like of the charging branch circuit are further optimized according to test data. The whole design process needs repeated simulation and actual measurement, and the flexibility is low and the period is long.

As shown in fig. 9, fig. 9 is a schematic flow chart illustrating a charging branch current distribution according to an exemplary embodiment, in this example, two parallel first transistors and second transistors are provided in a charger, and after the charger is connected to a charging device, a detection component in the charging device detects heat generation temperatures of the first charging line and the second charging line; the second control circuit outputs a third control signal according to the heating temperatures of the first charging circuit and the second charging circuit; after receiving the third control signal, a first control circuit in the charger adjusts the voltage value of the first control signal output to the first transistor and the voltage value of the second control signal output to the second transistor according to the third control signal, so that the impedances of the first transistor and the second transistor are adjusted, and the electrical parameters of the direct current output by the first power supply line and the second power supply line are adjusted.

It will be appreciated that since the impedance of the first transistor is inversely related to the voltage value of the first control signal, the impedance of the second transistor is inversely related to the voltage value of the second control signal. By increasing the voltage value of the control signal, the effects of reducing the transistor impedance, the total impedance of the charging branch circuit and increasing the charging current of the charging branch circuit can be achieved.

In some embodiments, the detection assembly comprises:

In the present example, the temperature detection element may be a thermistor.

Illustratively, as shown in fig. 10, fig. 10 is a schematic diagram illustrating a heat distribution of a terminal device according to an exemplary embodiment. Here, the front side of the terminal device may be a side where the display screen is located, and the back side of the terminal device may be a side where the rear camera is located.

As can be seen, the heat generation point CG1 is located in the middle-upper region of the front face (i.e., display screen) of the terminal device; the heating point CG2 is located in the charging port area on the reverse side of the terminal equipment; the heating point CG3 is located on the side of the back surface of the terminal device far away from the rear camera, and the use experience of the user can be affected due to the fact that the heating point CG3 is located in the holding area of the user.

In the present example, the heat generation point CG3 is located near the second charging line; the first charging circuit is arranged near the rear camera, and the control chip can control the second control circuit to output a third control signal in consideration of the fact that the terminal equipment is thick when being stacked in the first charging circuit area, so that after the first control circuit in the charger receives the third control signal, the current value of direct current output by the first power supply circuit is increased, the current value of direct current output by the second power supply circuit is reduced, and the heating condition of the second charging circuit is reduced.

In some embodiments, the charging interface includes at least:

In this example, the charging interface may be a Type-C interface, the first pin may be a VBUS1 pin, the second pin may be a VBUS2 pin, and the third pin may be a CC pin;

a first control circuit in a charger and a second control circuit in the charging equipment are connected through a third pin, and the first control circuit and the second control circuit communicate with each other based on a PD communication protocol.

As such, the present example can send the third control signal to the charger according to the heat generation condition through the charging device, so that the charger adjusts the voltage value of the first control signal of the first transistor and the voltage value of the second control signal of the second transistor, thereby changing the total impedance of the charging branch and changing the distribution of the charging current. And different charging currents are configured, and the optimal scheme of the temperature of the whole machine is determined through comparison.

Fig. 11 is a block diagram illustrating a charging device apparatus according to an example embodiment. For example, the apparatus 800 may be a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, an exercise device, a personal digital assistant, and the like.

Referring to fig. 11, the apparatus 800 may include one or more of the following components: a processing component 802, a memory 804, a power component 806, a multimedia component 808, an audio component 810, an input/output (I/O) interface 812, a sensor component 814, and a communication component 816.

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

The memory 804 is configured to store various types of data to support operation at the device 800. Examples of such data include instructions for any application or method operating on device 800, contact data, phonebook data, messages, pictures, videos, and so forth. The memory 804 may be implemented by any type or combination of volatile or non-volatile 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 disks.

Power component 806 provides power to the various components of 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 device 800.

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

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

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

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

The communication component 816 is configured to facilitate communications between the apparatus 800 and other devices in a wired or wireless manner. The device 800 may access a wireless network based on a communication standard, such as WiFi, 2G or 3G, or a combination thereof. In an exemplary embodiment, the communication component 816 receives a broadcast signal or broadcast related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, 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 apparatus 800 may be implemented by one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), controllers, micro-controllers, microprocessors or other electronic components for performing the above-described methods.

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

A non-transitory computer readable storage medium having instructions therein which, when executed by a processor of a mobile terminal, enable an electronic device to perform a method of location detection, the method comprising: driving an image acquisition assembly by using a driving assembly positioned in a shell, so that the image acquisition assembly can move between a first position and a second position through an opening positioned on the shell, wherein the first position is positioned in the shell, and the second position is positioned outside the shell; detecting the driving of the driving assembly to the image acquisition assembly through a detection assembly to generate a detection signal; and determining the distance between the current position of the image acquisition assembly and the first position according to the detection signal.

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 charger, characterized in that the charger comprises:

a first power supply line;

2. The charger of claim 1,

the first power supply line is provided with a first impedance adjusting element, wherein a controlled end of the first impedance adjusting element is connected with the first control circuit, and an input end and an output end of the first impedance adjusting element are connected with the first power supply line and used for adjusting the impedance of the first power supply line according to a first control signal provided by the first control circuit;

3. The charger according to claim 2, wherein the first impedance adjusting element is a first transistor, and the second impedance adjusting element is a second transistor;

4. The charger according to claim 1, wherein the charger comprises:

the charging interface is connected with the charging equipment;

the charging interface at least comprises:

5. The charger of claim 4, wherein the charging interface is an interface supporting a USB power transfer (PD) protocol, and wherein the first control circuit and the second control circuit within the charging device communicate based on the USB PD protocol.

6. A charging device, comprising:

a battery;

a first charging line;

7. The charging apparatus according to claim 6, characterized in that the charging apparatus comprises:

a first charge pump and a second charge pump;

the second charge pump is located on the second charging line, connected between the battery and the second pin of the charging interface, and used for converting the direct current received by the second charging line and charging the battery by using the converted direct current.

8. The charging apparatus according to claim 7, comprising:

9. The charging apparatus as claimed in claim 6, wherein the detection assembly comprises:

10. The charging apparatus according to claim 9, wherein the temperature detection element is a thermistor.