CN218633381U - Quick charging adapter based on multiple charging interfaces - Google Patents

The utility model discloses a fill adapter soon based on a plurality of interfaces that charge, the adapter charges by two of same control module control of charging interface when inserting battery charging outfit alone, all can be by the direct voltage that provides of alternating current-direct current conversion module, and the charging efficiency is high and can not have the problem of sending out boiling hot. One of the charging interfaces is connected with the voltage control module, so that the two charging interfaces can be quickly charged when being connected to the charging equipment. The output of the voltage control module is not fixed to be 5V, but is determined by the charging equipment and the charging control module, and when the voltages applied by the two charging interfaces are equal, the output of the voltage control module can also follow the output of the alternating current-direct current conversion module. The quick charging adapter can realize simultaneous quick charging of multiple ports, is high in charging efficiency, less in components and low in cost, and has high practical value.

Quick charging adapter based on multiple charging interfaces

Technical Field

The utility model relates to a power technical field, concretely relates to fill adapter soon based on a plurality of interfaces that charge.

Background

With the popularization of the quick charging technology and the increase of the number of intelligent devices in hands of users, a multi-port quick charging charger becomes a charging accessory which is hot at times. The multi-port quick charging device is favored by consumers because only one charging adapter is needed to charge a plurality of intelligent devices at the same time, and great convenience is brought to the consumers.

In the multi-port quick charging technology, the scheme of the port A and the port C is a more common quick charging scheme at present. However, the fast charging scheme has some defects, for example, the fast charging can be performed by independently inserting the port a or the port C, but the DCDC module is required to perform voltage conversion, which affects the charging efficiency, and even more, the DCDC module can only fixedly output 5V, which results in that the port a cannot be fast charged; a mouth and C mouth charge simultaneously, can only export 5V, can't fill soon, if A mouth and C mouth want to realize filling soon simultaneously, then need a plurality of control chip independent control, increased the cost, also increased the volume of charger. The above-mentioned defect has influenced the use experience of mouthful + C fast filling scheme, needs to improve it.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model provides a fill adapter soon based on a plurality of interfaces that charge has improved the charging efficiency of A mouth + C mouth quick-charging scheme greatly, and charging method is more nimble. The utility model discloses a concrete technical scheme as follows:

the quick charging adapter based on the plurality of charging interfaces comprises an alternating current-direct current conversion module, a charging control module, N-1 voltage control modules, N switches and N charging interfaces; the N charging interfaces are respectively connected with the AC-DC conversion module through N switches so as to receive first voltage output by the AC-DC conversion module, and the N charging interfaces are in one-to-one correspondence with the N switches; n-1 of the N charging interfaces are also respectively connected with the N-1 voltage control modules to receive second voltage converted from the first voltage by the voltage control modules, and the N-1 charging interfaces are in one-to-one correspondence with the N-1 voltage control modules; the N-1 voltage control modules are connected with the charging control module, and the corresponding voltage control modules convert the first voltage into a second voltage based on the application voltage of the charging equipment acquired by the charging control module; the N charging interfaces are connected to the same charging control module, and N is a positive integer greater than or equal to 2.

Further, the charging interface comprises a first charging interface and a second charging interface; the first charging interface is connected with the alternating current-direct current conversion module through a first switch so as to receive a first voltage output by the alternating current-direct current conversion module; the second charging interface is connected with the alternating current-direct current conversion module through a second switch so as to receive a first voltage output by the alternating current-direct current conversion module; the second charging interface is also connected with the voltage control module to receive a second voltage converted from the first voltage by the voltage control module; wherein the switch comprises a first switch and a second switch.

Furthermore, the first charging interface is a USB-C interface and includes a power pin, a data pin, a fast charging configuration channel, and a ground pin; the power supply pin is connected with an output pin of the alternating current-direct current conversion module through a first switch so as to receive a first voltage output by the alternating current-direct current conversion module; the data pins comprise positive data pins and negative data pins which are respectively connected with the first positive data pins and the first negative data pins of the charging control module; the quick charging configuration channel comprises a first quick charging configuration channel and a second quick charging configuration channel which are respectively connected with the first quick charging configuration channel and the second quick charging configuration channel of the charging control module; the grounding pin is connected with a first current detection pin of the charging control module and is also connected with a second current detection pin of the charging control module through a resistor.

Furthermore, the first switch is an NMOS transistor, and a source thereof is connected to a power pin of the first charging interface, a drain thereof is connected to an output pin of the ac-dc conversion module, and a gate thereof is connected to a first driving pin of the charging control module.

Further, the second charging interface is ase:Sub>A USB-ase:Sub>A interface, and includes ase:Sub>A power pin, ase:Sub>A datase:Sub>A pin, and ase:Sub>A ground pin; the power supply pin is connected with an output pin of the alternating current-direct current conversion module through a second switch so as to receive a first voltage output by the alternating current-direct current conversion module, and the power supply pin is also connected with an output pin of the voltage control module so as to receive a second voltage converted by the voltage control module from the first voltage; the data pins comprise positive data pins and negative data pins which are respectively connected with second positive data pins and second negative data pins of the charging control module; the grounding pin is connected with a third current detection pin of the charging control module and is also connected with a fourth current detection pin of the charging control module through a resistor.

Furthermore, the second switch is an NMOS transistor, and a source thereof is connected to a power pin of the second charging interface, a drain thereof is connected to an output pin of the ac-dc conversion module, and a gate thereof is connected to a second driving pin of the charging control module.

Further, the voltage control module comprises an enable pin, a voltage control pin, an input pin, an output pin and a ground pin; the charging control module is used for receiving a charging signal and outputting the charging signal to the charging control module; the voltage control pin is connected with the voltage feedback pin of the charging control module and used for receiving the application voltage of the charging equipment connected to the second charging interface and sent by the charging control module, so that the voltage control module converts the first voltage into a second voltage; the output pin of the input heel leading alternating current-direct current conversion module is connected and used for receiving a first voltage output by the alternating current-direct current conversion module; the output pin is connected with a power pin of the second charging interface and used for outputting a second voltage for the second charging interface.

Furthermore, the adapter still includes photoelectric coupler, and photoelectric coupler's one end is connected at the output pin of alternating current-direct current conversion module, and the other end is connected at the opto-coupler control pin of charging control module.

The beneficial effects of the utility model reside in that: compared with the prior art, based on a plurality of charge interface fill the adapter soon in, by two interfaces that charge of same control module control when inserting battery charging outfit alone, all can be by the direct voltage that provides of alternating current-direct current conversion module, the high and problem that can not have the hair to scald of charge efficiency. One of the charging interfaces is connected with the voltage control module, so that the two charging interfaces can be quickly charged when being connected to the charging equipment. The output of the voltage control module is not fixed to be 5V, but is determined by the charging equipment and the charging control module, and when the voltages applied by the two charging interfaces are equal, the output of the voltage control module can also follow the output of the alternating current-direct current conversion module. The quick charging adapter can realize simultaneous quick charging of multiple ports, is high in charging efficiency, less in components and low in cost, and has high practical value.

Drawings

Fig. 1 is a schematic circuit diagram of an embodiment of the present invention, which is a quick charging adapter based on a plurality of charging interfaces.

Fig. 2 is a schematic flow chart of a quick charging method according to an embodiment of the present invention.

Detailed Description

In the following description, specific details are given to provide a thorough understanding of the embodiments. However, it will be understood by those of ordinary skill in the art that the embodiments may be practiced without these specific details. For example, circuits may be shown in block diagrams in order not to obscure the embodiments in unnecessary detail. In other instances, well-known circuits, structures and techniques may not be shown in detail in order not to obscure the embodiments.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

As used in this application, the term "if" can be interpreted contextually as "when …" or "upon" or "in response to a determination" or "in response to a detection". Similarly, the phrase "if it is determined" or "if a [ described condition or event ] is detected" may be interpreted contextually to mean "upon determining" or "in response to determining" or "upon detecting [ described condition or event ]" or "in response to detecting [ described condition or event ]".

In the multi-port quick charging technology, the scheme of the port A and the port C is a more common quick charging scheme at present. However, the fast charging scheme has some defects, for example, the fast charging can be performed by independently inserting the port a or the port C, but the DCDC module is required to perform voltage conversion, which affects the charging efficiency, and furthermore, the DCDC module can only output 5V fixedly, which results in that the port a cannot perform fast charging; a mouth and C mouth charge simultaneously, can only export 5V, can't fill soon, if A mouth and C mouth want to realize filling soon simultaneously, then need a plurality of control chip independent control, increased the cost, also increased the volume of charger. The above-mentioned defect has influenced the use experience of mouthful + C quick-filling scheme, needs to improve it.

In order to solve the technical problem, the embodiment of the utility model provides a fill adapter soon based on a plurality of interfaces that charge has improved the charging efficiency of A mouth + C mouth quick-charging scheme greatly, and charging method is more nimble. The adapter comprises an alternating current-direct current conversion module, a charging control module, N-1 voltage control modules, N switches and N charging interfaces; the N charging interfaces are respectively connected with the alternating current-direct current conversion module through N switches so as to receive first voltage output by the alternating current-direct current conversion module, and the N charging interfaces are in one-to-one correspondence with the N switches; n-1 of the N charging interfaces are also respectively connected with the N-1 voltage control modules to receive second voltage converted from the first voltage by the voltage control modules, and the N-1 charging interfaces correspond to the N-1 voltage control modules one by one; the N-1 voltage control modules are connected with the charging control module, and the corresponding voltage control modules convert the first voltage into a second voltage based on the application voltage of the charging equipment acquired by the charging control module; the N charging interfaces are connected to the same charging control module, and N is a positive integer greater than or equal to 2. In the present application, the plurality of the components means two or more.

Compared with the prior art, based on a plurality of interfaces that charge fill soon in the adapter, by a N interface that charges of same control module control when inserting battery charging outfit alone, all can be by the direct voltage that provides of alternating current-direct current conversion module, the high and problem that can not have the hair to scald of charging efficiency. The output of the voltage control module is not fixed 5V, but determined by the charging equipment and the charging control module, so that the N charging interfaces can be charged quickly when being connected to the charging equipment, and if the voltages applied by the different charging interfaces are equal, the output of the voltage control module can also follow the output of the alternating current-direct current conversion module, and the charging method is more flexible.

As one embodiment, the charging interface comprises a first charging interface and a second charging interface; the first charging interface is connected with the alternating current-direct current conversion module through a first switch so as to receive a first voltage output by the alternating current-direct current conversion module; the second charging interface is connected with the alternating current-direct current conversion module through a second switch so as to receive the first voltage output by the alternating current-direct current conversion module; the second charging interface is also connected with the voltage control module to receive a second voltage converted from the first voltage by the voltage control module; wherein the switch comprises a first switch and a second switch.

Specifically, the first charging interface is a USB-C interface, and includes a power pin, a data pin, a fast charging configuration channel, and a ground pin; the power supply pin VBUS is connected with an output pin VOUT of the alternating current-direct current conversion module through a first switch so as to receive a first voltage output by the alternating current-direct current conversion module; the data pins comprise a positive data pin DP and a negative data pin DM which are respectively connected with a first positive data pin DP and a first negative data pin DM of the charging control module; the fast charging configuration channel comprises a first fast charging configuration channel CC1 and a second fast charging configuration channel CC2 which are respectively connected with the first fast charging configuration channel CC1 and the second fast charging configuration channel CC2 of the charging control module; the grounding pin GNDC is connected with a first current detection pin CSP of the charging control module and is also connected with a second current detection pin CSN of the charging control module through a resistor R1 so as to realize current detection and ensure charging safety. It should be noted that the data pin and the fast charge configuration channel are both used for communicating with the charging device, for example, obtaining a fast charge voltage or a fast charge power required by the charging device, and different fast charge protocols use different pins for communicating, which is not described herein. Preferably, the first switch is an NMOS transistor, and a source thereof is connected to a power pin of the first charging interface, a drain thereof is connected to an output pin of the ac-dc conversion module, and a gate thereof is connected to the first driving pin DRV1 of the charging control module.

Specifically, the second charging interface is ase:Sub>A USB-ase:Sub>A interface, and includes ase:Sub>A power pin, ase:Sub>A datase:Sub>A pin, and ase:Sub>A ground pin; the power supply pin VBUS is connected with an output pin VOUT of the alternating current-direct current conversion module through a second switch so as to receive a first voltage output by the alternating current-direct current conversion module, and is also connected with an output pin OUT of the voltage control module so as to receive a second voltage converted by the voltage control module; the data pins comprise a positive data pin DP and a negative data pin DM which are respectively connected with a second positive data pin DPA and a second negative data pin DMA of the charging control module; the ground pin GNDC is connected to a third current detection pin CSAP of the charging control module, and is further connected to a fourth current detection pin CSAN of the charging control module through a resistor R2. Preferably, the second switch is an NMOS transistor, and a source thereof is connected to a power pin of the second charging interface, a drain thereof is connected to an output pin of the ac-dc conversion module, and a gate thereof is connected to the second driving pin DRV2 of the charging control module.

As shown IN fig. 1, the voltage control module includes an enable pin EN, a voltage control pin FB, an input pin IN, an output pin OUT, and a ground pin GND; the charging control module comprises an enabling pin, a charging control module and a charging control module, wherein the enabling pin is connected with a general input/output pin GPIO0 of the charging control module and used for receiving an enabling signal; the voltage control pin is connected with a voltage feedback pin FB of the charging control module and used for receiving the application voltage of the charging equipment which is connected with the second charging interface and sent by the charging control module, so that the voltage control module converts the first voltage into a second voltage; the output pin of the input heel leading alternating current-direct current conversion module is connected and used for receiving a first voltage output by the alternating current-direct current conversion module; the output pin is connected with a power pin of the second charging interface and used for outputting a second voltage for the second charging interface. It should be noted that, the voltage Feedback pin FB of the charging control module is a Feedback loop driving pin (Feedback), and the charging control module obtains the applied voltage of the charging device through the second charging interface and then sends the applied voltage to the voltage control module, so as to control the magnitude of the output voltage of the voltage control module. Preferably, the voltage control module is a BUCK module, and the highest output voltage of the voltage control module can reach the application voltage of another charging interface controlled by the voltage regulation of the photoelectric coupler. If the first charging interface outputs 20V, the BUCK module may output a maximum voltage of 20V for the second charging interface. Of course, if the second charging interface only applies for the voltage of 9V, the BUCK module outputs 9V, which depends on the magnitude of the voltage applied by the charging device. However, if the first charging port outputs 9V and the second charging port applies 20V, the second charging port can only output a voltage of up to 9V. Optionally, the voltage control module is a BOOST module, and if the first charging interface outputs 9V and the second charging interface applies for 20V, the second charging interface BOOSTs and outputs 20V. If the first charging interface outputs 20V and the second charging interface applies 9V, the two charging interfaces can only be lowered to 5V output. Optionally, the voltage control module is a BUCK-BOOST module, and an output voltage of the voltage control module is not limited by an applied voltage of another charging interface. Particularly, when the application voltage of the charging equipment of the second charging interface is consistent with the output voltage of the current alternating current-direct current conversion module, the voltage control module outputs a voltage as large as the output voltage of the current alternating current-direct current conversion module, namely the second voltage is equal to the first voltage, so that the two charging interfaces can be charged quickly at the same time, and the charging efficiency is improved.

As one embodiment, the adapter further includes a photocoupler, one end of the photocoupler is connected to the output pin VOUT of the ac/dc conversion module, and the other end of the photocoupler is connected to the photocoupler control pin OPTO of the charging control module. The photocoupler is a component (not shown in fig. 1) connected between the primary and the secondary of the ac-dc conversion module, and generates a signal which is a key signal fed back from the secondary to the primary and can control the output voltage of the ac-dc conversion module. When the first charging interface or the second charging interface is independently connected to the charging equipment, the charging control module controls the change of an optical coupling signal of the photoelectric coupler according to the applied voltage of the charging equipment, and then controls the alternating current-direct current conversion module to output a first voltage; when the first charging interface and the second charging interface are connected to the charging equipment at the same time, the charging control module controls the change of an optical coupler signal of the photoelectric coupler according to the application voltage of the charging equipment connected to the first charging interface, and then controls the alternating current-direct current conversion module to output the first voltage to the first charging interface, and then controls the voltage control module to convert the first voltage into the second voltage to supply to the second charging interface according to the application voltage of the charging equipment connected to the second charging interface.

As shown in fig. 1, the photocoupler can be simplified to be composed of a light emitting LED and a phototransistor (not shown, connected between the primary and secondary of the ac-dc conversion module). The light-emitting LEDs are connected with a resistor in series and in parallel at the same time and are used for regulating the current of the light-emitting LEDs. When the current voltage is too high and the current flowing into the photoelectric coupler is large, the light-emitting LED is brighter, the current is larger when the light-emitting LED is fed back to the photosensitive transistor, and the alternating current-direct current conversion module controls the duty ratio of the primary output voltage to reduce the voltage; on the contrary, when the current voltage is too low and the current flowing into the photoelectric coupler is small, the light-emitting LED is darker, the current is smaller when the light-emitting LED is fed back to the photosensitive transistor, and the alternating current-direct current conversion module controls the duty ratio of the primary output voltage to increase the voltage. The basic idea of using the photoelectric coupler to regulate the voltage is as above, and is not described again. In addition, the photoelectric coupler can also isolate high voltage, thereby protecting charging equipment.

As shown in fig. 2, an embodiment of the present invention provides a fast charging method, which specifically includes:

the method comprises the following steps that S1, a charging control module detects the access conditions of charging equipment of N charging interfaces and judges the access conditions, if only one charging interface is accessed into the charging equipment, a switch between the charging equipment and an alternating current-direct current conversion module is conducted, the alternating current-direct current conversion module receives a first voltage output by the alternating current-direct current conversion module, and if more than one charging interface is accessed into the charging equipment, the step S2 is carried out;

s2, when one charging interface connected to the charging equipment is not connected with the voltage control module, the charging control module conducts a switch between the charging interface and the alternating current-direct current conversion module to enable the charging interface to receive a first voltage output by the alternating current-direct current conversion module, and then the step S3 is carried out;

s3, based on the applied voltages of the charging equipment of the rest charging interfaces connected with the voltage control module, the charging control module enables the voltage control module to convert the first voltage into a second voltage and provide the second voltage for the corresponding charging interfaces;

n-1 of the N charging interfaces are respectively connected with N-1 voltage control modules, the N charging interfaces are connected to the same charging control module, and N is a positive integer greater than or equal to 2.

As an implementation manner, in the step S2, when the charging interfaces connected to the charging device are all connected to the voltage control module, the charging control module turns on a switch between the charging interface of the charging device, which applies the largest voltage, and the ac-dc conversion module, so that the charging interface receives the first voltage output by the ac-dc conversion module.

As shown in fig. 2, the charging interface includes a first charging interface and a second charging interface, and the switch includes a first switch and a second switch. In the process of executing the step S1, if only the first charging interface is connected to the charging device, the first switch is turned on, so that the first charging interface receives the first voltage output by the ac/dc conversion module, and if only the second charging interface is connected to the charging device, the second switch is turned on, so that the second charging interface receives the first voltage output by the ac/dc conversion module.

In the process of executing the step S2, based on the applied voltage of the charging device connected to the first charging interface, the charging control module controls the change of an optocoupler signal of the optocoupler, so as to control the ac/dc conversion module to output the first voltage, and then turns on the first switch, so that the first charging interface receives the first voltage output by the ac/dc conversion module; the first charging interface is not connected with the voltage control module, and the adapter comprises a photoelectric coupler.

In the process of executing the step S3, based on the applied voltage of the charging device connected to the second charging interface, the charging control module enables the voltage control module, and simultaneously sends the applied voltage to the voltage control module, so that the voltage control module converts the first voltage output by the current ac/dc conversion module into the second voltage to be provided to the second charging interface; and the second charging interface is connected with the voltage control module.

Compared with the prior art, based on a plurality of charge interface fill the adapter soon in, by two interfaces that charge of same control module control when inserting battery charging outfit alone, all can be by the direct voltage that provides of alternating current-direct current conversion module, the high and problem that can not have the hair to scald of charge efficiency. One of the charging interfaces is connected with the voltage control module, so that the two charging interfaces can be quickly charged when being connected to the charging equipment. The output of the voltage control module is not fixed at 5V, but is determined by the charging equipment and the charging control module, and when the voltages applied by the two charging interfaces are equal, the output of the voltage control module can also follow the output of the alternating current-direct current conversion module. The quick charging adapter can realize simultaneous quick charging of multiple ports, is high in charging efficiency, less in components and low in cost, and has high practical value.

Obviously, the embodiments described above are only a part of the embodiments of the present invention, and not all embodiments, and the technical solutions between the embodiments may be combined with each other. Furthermore, if terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., appear in the embodiments, their indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. If the terms "first", "second", "third", etc. appear in the embodiments, they are for convenience of distinguishing between related features, and they are not to be construed as indicating or implying any relative importance, order or number of features.

In addition, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents, which are merely preferred embodiments of the invention and are not intended to limit the invention, which may be modified and varied by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.