CN117913942A - Multi-port charging system, power distribution method and electronic equipment - Google Patents
Multi-port charging system, power distribution method and electronic equipment Download PDFInfo
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Abstract
The invention provides a multi-port charging system, a power distribution method and electronic equipment, wherein each power supply port of the system is coupled to one end of a detection resistor through a corresponding power state adjustment module, and the other end of the detection resistor is grounded; the power state adjustment module includes: the current source is used for outputting adjustable first current to the detection resistor; the opposite-end state detection unit is used for detecting the voltage of the first end of the detection resistor in real time; the control unit is used for controlling the magnitude of the first current output by the corresponding current source according to the power distribution signal, and outputting a first power adjustment signal according to the voltage of the first end of the detection resistor: and the power control unit is used for adjusting the power supply grade of the power supply obtained by the accessed equipment according to the first power adjustment signal, wherein the power supply grade at least comprises four grades. The invention can reasonably distribute power according to the equipment requirement under the condition of ensuring the normal charging of each port, and maximally realize the quick charging function of the ports.
Description
Technical Field
The present invention relates to the field of charging technologies, and in particular, to a multi-port charging system, a power distribution method, and an electronic device.
Background
The existing multi-port charging technology widely uses a framework sharing a main power supply, and the framework uses a single power supply module to supply power, so that a plurality of external devices can be charged. A power supply apparatus for external power supply, which is commonly used at present and can be configured with a plurality of power supply ports, includes: a multi-outlet socket, a multi-wire charger, etc.
In the current multi-port charging system, in order to provide the required power for the devices connected to each power supply port as much as possible, the power of the main power supply needs to be distributed. The existing multi-port charging system generally adopts the distribution mode that: an insertion detection module is arranged, whether the corresponding port is locked (namely whether equipment is accessed) or not is judged through detection of an electric signal (such as current, voltage and the like) by the insertion detection module, and full-power quick charging support is provided for external equipment only under the condition that other charging ports are not locked;
If multiple power ports are locked, the multi-port charging system will distribute power to the power ports to ensure that all devices are powered.
However, when some access devices are low-power devices (such as data lines) or the devices are in a low-power charging state, the corresponding ports are still in a locked state, and the multi-port charging system still distributes power to the ports equally, so that quick charging support is not provided for the devices requiring high-power charging.
Therefore, how to distribute power reasonably according to the device needs under the condition of ensuring normal charging of each port and maximally give consideration to the realization of the fast charging function of the ports has become a technical problem to be solved in the industry.
Disclosure of Invention
The invention provides a multi-port charging system, a power distribution method and electronic equipment, which are used for solving the technical problem of reasonably distributing power according to equipment requirements under the condition of ensuring normal charging of all ports and realizing the quick charging function of the ports to the greatest extent.
According to a first aspect of the present invention, there is provided a multi-port charging system for adjusting power provided by each power supply port, comprising: the power supply system comprises a main power supply module, N power state adjustment modules and N power supply ports, wherein each power supply port is coupled to the main power supply module through a switch module, each power supply port is further coupled to a first end of a detection resistor through a corresponding power state adjustment module, and a second end of the detection resistor is grounded; wherein N is an integer greater than or equal to 2;
The power state adjusting module comprises a current source, an opposite end state detecting unit, a control unit and a power control unit;
The first end of the current source is coupled to the first end of the detection resistor and the first end of the opposite end state detection unit respectively, the second end of the opposite end state detection unit is coupled to the first end of the control unit, the second end of the control unit is coupled to the control end of the current source, the third end is coupled to the first end of the power control unit, the fourth end of the power control unit receives the power distribution signal, and the second end of the power control unit is coupled to the corresponding power supply port; the power distribution signal comprises power supply information required by a corresponding power supply port; wherein:
The switch module is configured to be turned on when a corresponding power supply port is accessed by equipment, so that the main power supply module supplies power to the corresponding equipment;
The current source is used for outputting adjustable first current, the magnitude of the first current represents the current power state of the corresponding power supply port, and the power state comprises locking state information and power supply demand information;
The opposite-end state detection unit is configured to detect the voltage of the first end of the detection resistor in real time and output the detected voltage to the control unit;
The control unit is configured to:
Controlling the magnitude of a first current output by a corresponding current source according to the power distribution signal, and outputting a first power adjustment signal to the power control unit according to the voltage of the first end of the detection resistor, wherein the first power adjustment signal comprises main power supply power information, power state information of equipment and power state information of the rest power supply ports;
The power control unit is configured to adjust a power supply level of power supplied by the accessed device according to the first power adjustment signal, wherein the power supply level at least comprises four levels.
Optionally, the locking state includes an unlocked state and a locked state, and the power supply requirement includes a light load requirement and a heavy load requirement; the power supply level comprises a light load level, a first power level, a second power level and a full power level; according to the first power adjustment signal, adjusting a power supply level of power supply obtained by the accessed equipment, wherein the method specifically comprises the following steps:
If the first power adjustment signal is characterized as the power supply requirement of the corresponding power supply port and the other power supply ports are all in an unlocked state, the accessed equipment obtains the power supply of the full power level;
If the first power adjustment signal is characterized as the power supply requirement of the corresponding power supply port is the heavy load requirement, and only the power supply port with the power supply requirement being the light load requirement exists in the rest power supply ports, the accessed equipment obtains the power supply of the second power level;
If the first power adjustment signal is characterized as the power supply requirement of the corresponding power supply port is the reloading requirement, and at least one power supply port exists in the rest power supply ports and is in a locking state, and the power supply requirement is the reloading requirement, the accessed equipment obtains the power supply of the first power level;
If the first power adjustment signal is characterized in that the power supply requirement of the corresponding power supply port is a light load requirement, and only the power supply port with the power supply requirement being the light load requirement exists in the other power supply ports, or the other power supply ports are in an unlocked state, the accessed equipment obtains the power supply of the light load power level.
Optionally, the power supply level further includes a half power level; according to the first power adjustment signal, adjusting a power supply level of power supply obtained by the accessed device, and specifically further comprising:
if the power distribution signal is characterized in that the power supply requirement of the ith power supply port is a reloading requirement, and the kth power supply port is in a locking state in the rest power supply ports, and the power supply requirement of the kth power supply port is the reloading requirement, the main power supply module is adjusted to supply power of half power level to both the ith power supply port and the kth power supply port; wherein i and k are integers, i is more than or equal to 1 and less than or equal to N, and k is more than or equal to 1 and less than or equal to N.
Optionally, the current source includes M branches, each branch including a first current source and a first switching subunit; wherein M is an integer greater than or equal to 2;
The first end of the first switch subunit is coupled to the first current source, the second end of the first switch subunit is coupled to the first end of the detection resistor, and the control end of the first switch subunit receives an indication control signal;
The current source is further configured to: and controlling j first switch subunits to be closed according to the indication control signals, wherein j is an integer, and j is more than or equal to 1 and less than or equal to M.
Optionally, the first switch subunit includes a PMOS switch tube and a driving subunit;
the source electrode of the PMOS tube is coupled to the first current source, the drain electrode of the PMOS tube is coupled to the first end of the detection resistor, and the grid electrode of the PMOS tube receives the indication control signal.
Optionally, the opposite-end state detection unit includes n×m comparators;
the first input end of each comparator is coupled to the first end of the detection resistor, the second input end of each comparator receives the corresponding reference voltage, and the output end of each comparator is coupled to the first end of the control unit.
Optionally, the control unit is further configured to:
And when the corresponding power supply port is accessed by equipment, controlling the current source to indicate the locking state of the corresponding power supply port and the corresponding power supply requirement.
Optionally, the power supply port includes a USB TYPE-a interface or a USB TYPE-C interface.
Optionally, the power state adjustment module further includes a protocol unit; the power control unit is further configured to output a second power adjustment signal in dependence of the first power adjustment signal;
The first end of the protocol unit is coupled to the second end of the power control unit, and the second end of the protocol unit is coupled to the corresponding power supply port;
The protocol unit is configured to: and controlling the corresponding equipment to adjust the required power supply information according to the corresponding power supply level according to the second power adjustment signal.
According to a second aspect of the present invention, there is provided a power distribution method for controlling the multi-port charging system provided in any one of the first aspects of the present invention, the method comprising:
when the corresponding power supply port is accessed by equipment, the corresponding switch module is conducted so that the main power supply module supplies power to the corresponding equipment; wherein the device can be powered at least by one of 4 power levels;
Outputting an adjustable first current, wherein the magnitude of the first current represents the current power state of a corresponding power supply port, and the power state comprises locking state information and power supply demand information;
Detecting the voltage of the first end of the detection resistor in real time, and outputting the voltage of the first end of the detection resistor to the control unit, wherein the voltage of the first end of the detection resistor is used for representing the power states of the N power supply ports;
Controlling the magnitude of a first current output by a corresponding current source according to the power distribution signal, and outputting a first power adjustment signal to the power control unit according to the voltage of the first end of the detection resistor, wherein the first power adjustment signal comprises main power supply power information, power state information of equipment and power state information of the rest power supply ports;
and adjusting the power supply grade of the power supply obtained by the accessed equipment according to the first power adjustment signal.
According to a third aspect of the present invention there is provided an electronic device comprising a multi-port charging system as provided in any one of the first aspects of the present invention.
In the multi-port charging system, the power distribution method and the electronic equipment provided by the invention, each power supply port of the system is coupled to one end of a detection resistor through a corresponding power state adjustment module, and the other end of the detection resistor is grounded; the power state adjustment module includes: the current source is used for outputting adjustable first current to the detection resistor; the opposite-end state detection unit is used for detecting the voltage of the first end of the detection resistor in real time; the control unit is used for controlling the magnitude of the first current output by the corresponding current source according to the power distribution signal, and outputting a first power adjustment signal according to the voltage of the first end of the detection resistor: and the power control unit is used for adjusting the power supply grade of the power supply obtained by the accessed equipment according to the first power adjustment signal, wherein the power supply grade at least comprises four grades. The invention can reasonably distribute power according to the equipment requirement under the condition of ensuring the normal charging of each port, and maximally realize the quick charging function of the ports.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the following description will briefly explain the drawings used in the embodiments or the description of the prior art, and it is obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings can be obtained according to these drawings without inventive effort to a person skilled in the art.
FIG. 1 is a schematic diagram of a multi-port charging system according to an embodiment of the invention;
FIG. 2 is a schematic diagram showing a circuit configuration of a power state adjustment module according to an embodiment of the invention;
FIG. 3 is a schematic circuit diagram of a current source according to an embodiment of the invention;
FIG. 4 is a schematic diagram showing an operating state of the multi-port charging system according to an embodiment of the invention;
FIG. 5 is a second schematic diagram illustrating an operating state of the multi-port charging system according to an embodiment of the invention;
FIG. 6 is a schematic diagram of a power state adjustment module according to an embodiment of the invention;
FIG. 7 is a flow chart of a power allocation method according to an embodiment of the invention;
Reference numerals illustrate:
10-a main power supply module;
A 20-power state adjustment module;
30-a switch module;
40-a power supply port;
R-detecting resistance;
201-a current source;
2011-a first current source;
2012-a first switching subunit;
20121-drive subunit;
202-an opposite end state detection unit;
2021-comparator;
203-a control unit;
204-power control unit.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The terms "first," "second," "third," "fourth" and the like in the description and in the claims and in the above drawings, if any, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the invention described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or front-end elements is not necessarily limited to those steps or front-end elements expressly listed or inherent to such process, method, article, or apparatus, but may include other steps or front-end elements not expressly listed or inherent to such process, method, article, or apparatus.
The technical scheme of the invention is described in detail below by specific examples. The following embodiments may be combined with each other, and some embodiments may not be repeated for the same or similar concepts or processes.
In view of the prior art, it is difficult to reasonably distribute power according to the equipment requirements under the condition of ensuring normal charging of each port, and the realization of the quick charging function of the port is considered to the greatest extent. The invention provides a multi-port charging system, wherein each power supply port of the system is coupled to one end of a detection resistor through a corresponding power state adjusting module, and the other end of the detection resistor is grounded; the power state adjustment module includes: the current source is used for outputting adjustable first current to the detection resistor; the opposite-end state detection unit is used for detecting the voltage of the first end of the detection resistor in real time; the control unit is used for controlling the magnitude of the first current output by the corresponding current source according to the power distribution signal, and outputting a first power adjustment signal according to the voltage of the first end of the detection resistor: and the power control unit is used for adjusting the power supply grade of the power supply obtained by the accessed equipment according to the first power adjustment signal, wherein the power supply grade at least comprises four grades. The invention can reasonably distribute power according to the equipment requirement under the condition of ensuring the normal charging of each port, and maximally realize the quick charging function of the ports.
Referring to fig. 1, an embodiment of the present invention provides a multi-port charging system for adjusting power provided by each power supply port 40, including: the power supply system comprises a main power supply module 10, N power state adjustment modules 20 and N power supply ports 40, wherein each power supply port 40 is coupled to the main power supply module 10 through a switch module 30, each power supply port 40 is further coupled to a first end of a detection resistor R through a corresponding power state adjustment module 20, and a second end of the detection resistor R is grounded; wherein N is an integer greater than or equal to 2;
In one embodiment, the switch module 30 is integrated within the same chip as the power state adjustment module 20.
Referring to fig. 2, the power state adjustment module 20 includes a current source 201, an opposite end state detection unit 202, a control unit 203, and a power control unit 204;
The first terminal of the current source 201 is coupled to the first terminal of the detection resistor R and the first terminal of the opposite terminal state detection unit 202, the second terminal of the opposite terminal state detection unit 202 is coupled to the first terminal of the control unit 203, the second terminal of the control unit 203 is coupled to the control terminal of the current source 201, the third terminal is coupled to the first terminal of the power control unit 204, the fourth terminal thereof receives the power distribution signal, and the second terminal of the power control unit 204 is coupled to the corresponding power supply port 40; the power distribution signal includes power supply information required by the corresponding power supply port 40; wherein:
The switch module 30 is configured to be turned on when a corresponding power supply port 40 has a device connected to it, so that the main power supply module 10 supplies power to the corresponding device;
The current source 201 is configured to output an adjustable first current, where a magnitude of the first current characterizes a current power state of the corresponding power supply port 40, and the power state includes locking state information and power supply requirement information;
The opposite-end state detection unit 202 is configured to detect the voltage of the first end of the detection resistor R in real time, and output the detected voltage to the control unit 203;
The control unit 203 is configured to:
Controlling the magnitude of a first current output by the corresponding current source 201 according to the power distribution signal, and outputting a first power adjustment signal to the power control unit 204 according to the voltage of the first end of the detection resistor R, where the first power adjustment signal includes main power supply power information, power state information of the device, and power state information of the remaining power supply ports 40;
the power control unit 204 is configured to adjust a power supply level of a power supply obtained by the accessed device according to the first power adjustment signal, wherein the power supply level comprises at least four levels.
By way of example, the power port 40 includes a USB TYPE-A interface or a USB TYPE-C interface. Of course, the invention is not limited to the specific type of power supply port 40, but may be a lightning interface, etc., and those skilled in the art may select an appropriate interface type as desired.
In one embodiment, referring to fig. 3, the current source 201 includes M branches, and each branch includes a first current source 2011 and a first switch subunit 2012; wherein M is an integer greater than or equal to 2;
The first switch subunit 2012 has a first end coupled to the first current source 2011, a second end coupled to the first end of the sense resistor R, and a control end receiving an indication control signal dig_link < M-1:0>;
The current source 201 is further configured for: according to the indication control signal dig_link < M-1:0>, j first switch subunits 2012 are controlled to be closed, wherein j is an integer, and j is more than or equal to 1 and less than or equal to M.
In one example, the first switching subunit 2012 includes a PMOS switching tube and a driving subunit 20121;
The source of the PMOS tube is coupled to the first current source 2011, the drain thereof is coupled to the first end of the detection resistor R, and the gate thereof receives the indication control signal Dig_link < M-1:0>.
In this case, the above-mentioned controlling the magnitude of the first current output by the corresponding current source 201 according to the power distribution signal may be understood that, according to the power distribution signal, the indication control signal dig_link < M-1:0> is output to control the total number of the first switch sub-units 2012 closed in the corresponding current source 201, thereby controlling the magnitude of the first current output by the corresponding current source 201, where the indication control signal dig_link < M-1:0> includes M bits, and each bit is used to correspondingly control the on/off of one of the first switch sub-units 2012.
Therefore, the present invention can determine the power status information in the remaining power supply ports 40 by monitoring the voltage of the first end of the detection resistor R and combining the total number of the power supply ports 40 to which the known device is connected. In a preferred embodiment, according to the power distribution signal, controlling the magnitude of the first current output by the corresponding current source 201 specifically includes:
When a device is connected to the corresponding power supply port 40, one first switch subunit 2012 in the corresponding current source 201 is controlled to be turned on.
In one embodiment, the locked state includes an unlocked state and a locked state, and the power supply demand includes a light load demand and a heavy load demand; the power supply levels include a light load level, a first power level, a second power level, and a full power level.
In this case, according to the first power adjustment signal, adjusting a power supply level of power obtained by the accessed device specifically includes:
if the first power adjustment signal is characterized as the power supply requirement of the corresponding power supply port 40 is the reloading requirement, and the rest power supply ports 40 are in the unlocked state, the accessed equipment obtains the power supply of the full power level;
If the first power adjustment signal is characterized as the power supply requirement of the corresponding power supply port 40 is the heavy load requirement, and only the power supply port 40 with the power supply requirement being the light load requirement exists in the rest of the power supply ports 40, the accessed equipment obtains the power supply of the second power level;
If the first power adjustment signal is characterized as the power supply requirement of the corresponding power supply port 40 is a reloading requirement, and at least one power supply port 40 exists in the rest power supply ports 40 in a locked state, and the power supply requirement is the reloading requirement, the accessed device obtains the power supply of the first power level;
If the first power adjustment signal is characterized in that the power supply requirement of the corresponding power supply port 40 is a light load requirement, and only the power supply port 40 with the power supply requirement of the light load requirement exists in the rest of the power supply ports 40, or the rest of the power supply ports 40 are in an unlocked state, the accessed device obtains the power supply of the light load power level.
Taking the circuit of the present invention as an example where the current source 201 includes 2 branches, please describe how to adjust the power supply level of the power supply obtained by the power supply ports 40 with reference to the state diagram shown in fig. 4, in the circuit corresponding to fig. 4, the multi-port charging system includes 2 power supply ports 40:
When the device is connected to the power supply port 40, the multi-port charging system will firstly adjust the current outputted by the current source 201 corresponding to the power supply port 40 to match with the power supply requirement of the device; in one embodiment, the control unit 203 is further configured to:
When a device is connected to the corresponding power supply port 40, the current source 201 is controlled to indicate the locking state of the corresponding power supply port 40 and the corresponding power supply requirement.
In a specific embodiment, if the local terminal (i.e. the 1 st power supply port 40) is in a locked state according to the power distribution signal, and the power supply requirement thereof is a reload requirement, the 2bit control signal output by the control unit 203 is 11, so as to control the first switch subunits 2012 of the corresponding two branches to be closed;
In this case, if the opposite-end state detection unit 202 detects that the opposite end (i.e. the 2 nd power supply port 40) is in the unlocked state, that is, the 2bit control signal output by the corresponding control unit 203 is 00, so as to control the first switch subunits 2012 of the corresponding two branches to be disconnected; in this case, the device accessed by the home terminal obtains the power supply of the full power level;
If it is detected that the opposite end (i.e., the 2 nd power supply port 40) is in the locked state, and the power supply requirement is a light load requirement, i.e., the 2bit control signal output by the corresponding control unit 203 is 10, only the first switch subunit 2012 of the corresponding branch is controlled to be closed; in this case, the power supply level of the power supply obtained by the device accessed by the local terminal is the second power level;
if it is detected that the opposite end (i.e. the 2 nd power supply port 40) is in the locked state, and the power supply requirement is a heavy load requirement, i.e. the 2bit control signal output by the corresponding control unit 203 is 11, so as to control the first switch subunits 2012 of the corresponding two branches to be closed; in this case, the power supply level of the power supply obtained by the device accessed by the home terminal is the first power level.
If the local terminal (i.e. the 1 st power supply port 40) is in a locked state according to the power distribution signal, and the power supply requirement is a light load requirement, the 2bit control signal output by the control unit 203 is 10, and only the first switch subunit 2012 of the corresponding branch is controlled to be closed;
In this case, if it is detected that the opposite end (i.e. the 2 nd power supply port 40) is in the locked state, and the power supply requirement thereof is a light load requirement, that is, the 2bit control signal output by the corresponding control unit 203 is 10, so as to control the first switch subunit 2012 of the corresponding branch to be closed; in this case, the power supply level of the power supply obtained by the device accessed by the local terminal is a light load power level;
If it is detected that the opposite end (i.e., the 2 nd power supply port 40) is in the unlocked state, that is, the 2bit control signal output by the corresponding control unit 203 is 00, so as to control the first switch subunits 2012 of the corresponding two branches to be disconnected; in this case, the power supply level of the power supply obtained by the device accessed by the local terminal is a light load power level.
It should be understood that when the power supply requirement of the local or the opposite end changes, the power supply level of the power supply obtained by the power supply port 40 corresponding to each device may be adjusted accordingly. Therefore, the invention can reasonably distribute power according to the equipment requirement under the condition of ensuring the normal charging of each port, and furthest takes into account the realization of the quick charging function of the port.
In a preferred embodiment, referring to the state diagram shown in fig. 5, the power supply levels further include half power levels; according to the first power adjustment signal, adjusting a power supply level of power supply obtained by the accessed device, and specifically further comprising:
If the power distribution signal is characterized as the power supply requirement of the ith power supply port 40 is a reloading requirement, and in the rest of the power supply ports 40, the kth power supply port 40 is in a locked state, and the power supply requirement thereof is a reloading requirement, the main power supply module 10 is adjusted to supply power of half power level to both the ith power supply port 40 and the kth power supply port 40; wherein i and k are integers, i is more than or equal to 1 and less than or equal to N, and k is more than or equal to 1 and less than or equal to N.
Of course, the indication control signal dig_link < M-1:0> outputted by the control unit 203 may also be designed to indicate that the corresponding power supply port 40 is in an unlocked state only in case of its output 000. In other embodiments, the power requirements may also be specific to the corresponding device, such as 5W power, 30W power, 60W power, etc. In this case, the total number of branches in the current source 201 may be increased, taking the example that the current source 201 includes 3 branches: if the 3bit control signal outputted by the control unit 203 is 000 to control the first switch subunits 2012 of the corresponding three branches to be disconnected, the corresponding power supply port 40 is indicated to be unlocked; if the 3bit control signal output by the control unit 203 is 001 to control the first switch subunit 2012 of the corresponding branch circuit to be closed, the voltage required for characterizing the corresponding power supply port 40 is 5W; if the 3bit control signal output by the control unit 203 is 011 to control the first switch subunits 2012 of the corresponding two branches to be closed, the voltage required for characterizing the corresponding power supply port 40 is 30W;
If the 3bit control signal output by the control unit 203 is 111 to control the first switch sub-units 2012 of the corresponding two branches to be closed, the voltage required for characterizing the corresponding power supply port 40 is 60W.
Of course, those skilled in the art may define the specific content of the power supply requirement information according to the design index.
Regarding the opposite-end state detection unit 202, in one embodiment, it includes n×m comparators 2021;
A first input terminal of each comparator 2021 is coupled to the first terminal of the detection resistor R, a second input terminal thereof receives a corresponding reference voltage VREF, and an output terminal thereof is coupled to the first terminal of the control unit 203.
In the example shown in fig. 6, the circuit of the opposite-end state detecting unit 202 is configured on the basis that the multi-port charging system includes two power supply ports 40, and the current source 201 includes two branches, and includes 4 comparators 2021, where the voltage value of the first end of the detecting resistor R corresponding to different power supply levels may be understood by receiving the corresponding reference voltage VREF at the second input end of each comparator 2021.
In the example of fig. 6, in a preferred embodiment, the opposite-end state detection unit 202 further outputs an opposite-end state indication signal link_det <3:0> for indicating that it includes the comparison result output by each comparator 2021, wherein the opposite-end state indication signal link_det <3:0> is used to characterize the voltage of the first end of the detection resistor R.
Of course, the present invention is not limited thereto, and the voltage value of the first end of the detection resistor R may be directly measured, and the specific circuit implementation manner thereof is the prior art and will not be described herein. Those skilled in the art can select an appropriate circuit configuration as desired.
In an actual circuit, for adjusting the power supply level of the power supply obtained by the accessed device, referring to fig. 7, in one embodiment, the power state adjustment module 20 further includes a protocol unit 205; the power control unit 204 is further configured to output a second power adjustment signal in dependence of the first power adjustment signal;
the first end of the protocol unit 205 is coupled to the second end of the power control unit 204, and the second end thereof is coupled to the corresponding power supply port 40;
the protocol unit 205 is configured to: and controlling the corresponding equipment to adjust the required power supply information according to the corresponding power supply level according to the second power adjustment signal.
In addition, the embodiment of the present invention further provides a power distribution method, as a specific implementation manner, please refer to fig. 7, in actual use, the power distribution method provided by the embodiment of the present invention is used to control the multi-port charging system shown in fig. 1, and the method includes the following steps:
s51: powering up;
after power-on, the multi-port charging system works normally;
S52: the equipment is connected to a corresponding power supply port 40, and the main power supply module 10 supplies power to the corresponding equipment;
Specifically, when the corresponding power supply port 40 has equipment access, the corresponding switch module 30 is turned on, so that the main power supply module 10 supplies power to the corresponding equipment; wherein the device can be powered at least by one of 4 power levels;
S53: outputting an adjustable first current, wherein the magnitude of the first current represents the current power state of the corresponding power supply port 40, and the power state comprises locking state information and power supply requirement information;
s54: detecting the voltage of the first end of the detection resistor R in real time, and outputting the voltage of the first end of the detection resistor R to the control unit 203, where the voltage of the first end of the detection resistor R is used to characterize the power states of the N power supply ports 40;
S55: controlling the magnitude of a first current output by the corresponding current source 201 according to the power distribution signal, and outputting a first power adjustment signal to the power control unit 204 according to the voltage of the first end of the detection resistor R, where the first power adjustment signal includes main power supply power information, power state information of the device, and power state information of the remaining power supply ports 40;
S56: and adjusting the power supply grade of the power supply obtained by the accessed equipment according to the first power adjustment signal.
In one embodiment, the locked state includes an unlocked state and a locked state, and the power supply demand includes a light load demand and a heavy load demand; the power supply levels include a light load level, a first power level, a second power level, and a full power level.
In this case, step S56 specifically includes:
adjusting the power supply grade of power supply obtained by the accessed equipment according to the first power adjustment signal, wherein:
if the first power adjustment signal is characterized as the power supply requirement of the corresponding power supply port 40 is the reloading requirement, and the rest power supply ports 40 are in the unlocked state, the accessed equipment obtains the power supply of the full power level;
If the first power adjustment signal is characterized as the power supply requirement of the corresponding power supply port 40 is the heavy load requirement, and only the power supply port 40 with the power supply requirement being the light load requirement exists in the rest of the power supply ports 40, the accessed equipment obtains the power supply of the second power level;
If the first power adjustment signal is characterized as the power supply requirement of the corresponding power supply port 40 is a reloading requirement, and at least one power supply port 40 exists in the rest power supply ports 40 in a locked state, and the power supply requirement is the reloading requirement, the accessed device obtains the power supply of the first power level;
If the first power adjustment signal is characterized in that the power supply requirement of the corresponding power supply port 40 is a light load requirement, and only the power supply port 40 with the power supply requirement of the light load requirement exists in the rest of the power supply ports 40, or the rest of the power supply ports 40 are in an unlocked state, the accessed device obtains the power supply of the light load power level.
In addition, the embodiment of the invention also provides electronic equipment, which comprises the multi-port charging system. For example, the electronic device may be a socket with multiple sockets, a multi-line charger, or other devices requiring multi-port power supply.
In summary, in the embodiment of the present invention, each power supply port is coupled to one end of the detection resistor through the corresponding power state adjustment module, and the other end of the detection resistor is grounded; the power state adjustment module includes: the current source is used for outputting adjustable first current to the detection resistor; the opposite-end state detection unit is used for detecting the voltage of the first end of the detection resistor in real time; the control unit is used for controlling the magnitude of the first current output by the corresponding current source according to the power distribution signal, and outputting a first power adjustment signal according to the voltage of the first end of the detection resistor: and the power control unit is used for adjusting the power supply grade of the power supply obtained by the accessed equipment according to the first power adjustment signal, wherein the power supply grade at least comprises four grades. The invention can reasonably distribute power according to the equipment requirement under the condition of ensuring the normal charging of each port, and maximally realize the quick charging function of the ports.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (11)
1. A multi-port charging system for regulating power provided by each power supply port, comprising: the power supply system comprises a main power supply module, N power state adjustment modules and N power supply ports, wherein each power supply port is coupled to the main power supply module through a switch module, each power supply port is further coupled to a first end of a detection resistor through a corresponding power state adjustment module, and a second end of the detection resistor is grounded; wherein N is an integer greater than or equal to 2;
The power state adjusting module comprises a current source, an opposite end state detecting unit, a control unit and a power control unit;
The first end of the current source is coupled to the first end of the detection resistor and the first end of the opposite end state detection unit respectively, the second end of the opposite end state detection unit is coupled to the first end of the control unit, the second end of the control unit is coupled to the control end of the current source, the third end is coupled to the first end of the power control unit, the fourth end of the power control unit receives the power distribution signal, and the second end of the power control unit is coupled to the corresponding power supply port; the power distribution signal comprises power supply information required by a corresponding power supply port; wherein:
The switch module is configured to be turned on when a corresponding power supply port is accessed by equipment, so that the main power supply module supplies power to the corresponding equipment;
The current source is used for outputting adjustable first current, the magnitude of the first current represents the current power state of the corresponding power supply port, and the power state comprises locking state information and power supply demand information;
The opposite-end state detection unit is configured to detect the voltage of the first end of the detection resistor in real time and output the detected voltage to the control unit;
The control unit is configured to:
Controlling the magnitude of a first current output by a corresponding current source according to the power distribution signal, and outputting a first power adjustment signal to the power control unit according to the voltage of the first end of the detection resistor, wherein the first power adjustment signal comprises main power supply power information, power state information of equipment and power state information of the rest power supply ports;
The power control unit is configured to adjust a power supply level of power supplied by the accessed device according to the first power adjustment signal, wherein the power supply level at least comprises four levels.
2. The multi-port charging system of claim 1, wherein the locked state comprises an unlocked state and a locked state, and the power supply demand comprises a light load demand and a heavy load demand; the power supply level comprises a light load level, a first power level, a second power level and a full power level; according to the first power adjustment signal, adjusting a power supply level of power supply obtained by the accessed equipment, wherein the method specifically comprises the following steps:
If the first power adjustment signal is characterized as the power supply requirement of the corresponding power supply port and the other power supply ports are all in an unlocked state, the accessed equipment obtains the power supply of the full power level;
If the first power adjustment signal is characterized as the power supply requirement of the corresponding power supply port is the heavy load requirement, and only the power supply port with the power supply requirement being the light load requirement exists in the rest power supply ports, the accessed equipment obtains the power supply of the second power level;
If the first power adjustment signal is characterized as the power supply requirement of the corresponding power supply port is the reloading requirement, and at least one power supply port exists in the rest power supply ports and is in a locking state, and the power supply requirement is the reloading requirement, the accessed equipment obtains the power supply of the first power level;
If the first power adjustment signal is characterized in that the power supply requirement of the corresponding power supply port is a light load requirement, and only the power supply port with the power supply requirement being the light load requirement exists in the other power supply ports, or the other power supply ports are in an unlocked state, the accessed equipment obtains the power supply of the light load power level.
3. The multi-port charging system of claim 2, wherein the power level further comprises a half power level; according to the first power adjustment signal, adjusting a power supply level of power supply obtained by the accessed device, and specifically further comprising:
if the power distribution signal is characterized in that the power supply requirement of the ith power supply port is a reloading requirement, and the kth power supply port is in a locking state in the rest power supply ports, and the power supply requirement of the kth power supply port is the reloading requirement, the main power supply module is adjusted to supply power of half power level to both the ith power supply port and the kth power supply port; wherein i and k are integers, i is more than or equal to 1 and less than or equal to N, and k is more than or equal to 1 and less than or equal to N.
4. A multi-port charging system according to any of claims 1-3, wherein the current source comprises M branches, each branch comprising a first current source and a first switching subunit; wherein M is an integer greater than or equal to 2;
The first end of the first switch subunit is coupled to the first current source, the second end of the first switch subunit is coupled to the first end of the detection resistor, and the control end of the first switch subunit receives an indication control signal;
The current source is further configured to: and controlling j first switch subunits to be closed according to the indication control signals, wherein j is an integer, and j is more than or equal to 1 and less than or equal to M.
5. The multi-port charging system of claim 4, wherein the first switching subunit comprises a PMOS switching tube and a drive subunit;
the source electrode of the PMOS tube is coupled to the first current source, the drain electrode of the PMOS tube is coupled to the first end of the detection resistor, and the grid electrode of the PMOS tube receives the indication control signal.
6. The multi-port charging system according to claim 4, wherein the opposite-end state detection unit includes n×m comparators;
the first input end of each comparator is coupled to the first end of the detection resistor, the second input end of each comparator receives the corresponding reference voltage, and the output end of each comparator is coupled to the first end of the control unit.
7. The multi-port charging system of claim 1, wherein the control unit is further configured to:
And when the corresponding power supply port is accessed by equipment, controlling the current source to indicate the locking state of the corresponding power supply port and the corresponding power supply requirement.
8. The multi-port charging system of claim 1, wherein the power port comprises a USB TYPE-a interface or a USB TYPE-C interface.
9. The multi-port charging system of claim 1, wherein the power state adjustment module further comprises a protocol unit; the power control unit is further configured to output a second power adjustment signal in dependence of the first power adjustment signal;
The first end of the protocol unit is coupled to the second end of the power control unit, and the second end of the protocol unit is coupled to the corresponding power supply port;
The protocol unit is configured to: and controlling the corresponding equipment to adjust the required power supply information according to the corresponding power supply level according to the second power adjustment signal.
10. A method of power distribution for controlling a multi-port charging system according to any one of claims 1-9, the method comprising:
when the corresponding power supply port is accessed by equipment, the corresponding switch module is conducted so that the main power supply module supplies power to the corresponding equipment; wherein the device can be powered at least by one of 4 power levels;
Outputting an adjustable first current, wherein the magnitude of the first current represents the current power state of a corresponding power supply port, and the power state comprises locking state information and power supply demand information;
Detecting the voltage of the first end of the detection resistor in real time, and outputting the voltage of the first end of the detection resistor to the control unit, wherein the voltage of the first end of the detection resistor is used for representing the power states of the N power supply ports;
Controlling the magnitude of a first current output by a corresponding current source according to the power distribution signal, and outputting a first power adjustment signal to the power control unit according to the voltage of the first end of the detection resistor, wherein the first power adjustment signal comprises main power supply power information, power state information of equipment and power state information of the rest power supply ports;
and adjusting the power supply grade of the power supply obtained by the accessed equipment according to the first power adjustment signal.
11. An electronic device comprising a multi-port charging system according to any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311868137.4A CN117913942A (en) | 2023-12-29 | 2023-12-29 | Multi-port charging system, power distribution method and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311868137.4A CN117913942A (en) | 2023-12-29 | 2023-12-29 | Multi-port charging system, power distribution method and electronic equipment |
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| CN117913942A true CN117913942A (en) | 2024-04-19 |
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| CN202311868137.4A Pending CN117913942A (en) | 2023-12-29 | 2023-12-29 | Multi-port charging system, power distribution method and electronic equipment |
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| Country | Link |
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| CN (1) | CN117913942A (en) |
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- 2023-12-29 CN CN202311868137.4A patent/CN117913942A/en active Pending
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