CN212649103U - Multi-power supply device - Google Patents
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- CN212649103U CN212649103U CN202020962547.0U CN202020962547U CN212649103U CN 212649103 U CN212649103 U CN 212649103U CN 202020962547 U CN202020962547 U CN 202020962547U CN 212649103 U CN212649103 U CN 212649103U
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Abstract
The invention discloses a multi-power supply device. The embodiment of the invention provides a multi-power supply device, which comprises at least two power supply circuits, at least two current detection modules, at least one power supply voltage regulation module and a power supply management module, wherein the power supply management module is connected with each current detection module and the power supply voltage regulation module and is used for executing the following multi-power supply method: acquiring the current value of each power supply circuit; judging whether a preset first rule is met or not according to the current value of each power supply circuit; and when the first rule is determined not to be met, gradually adjusting the output voltage of at least one path of power supply by a preset step length until the current value of each path of power supply circuit after adjustment meets the first preset rule. Therefore, a plurality of power supplies can be used for supplying power simultaneously so as to meet the high-power requirement of the electronic equipment.
Description
Technical Field
The invention relates to the field of power supply devices of electronic equipment, in particular to a multi-power supply device.
Background
At present, most electronic equipment uses one power supply to supply power, but some electronic equipment has high power, and sometimes the problem of insufficient power of the power supply occurs. For example, the power requirement of a game notebook can be as high as 500W, while a common power supply can only provide 200W to 300W, and a single power supply cannot meet the power requirement of high power; even with a common notebook computer, when the computer is operated at a high load, charging with a single power supply is very slow, even without charging; all-in-one computer hosts also tend to be limited by the power limitations of the individual power supplies and do not deliver maximum performance.
Therefore, how to use a plurality of power supplies to supply power simultaneously to meet the high-power requirement of electronic equipment is an urgent technical problem to be solved.
Disclosure of Invention
In view of the above problems, the present inventors have creatively provided a multi-power supply method and apparatus.
According to a first aspect of embodiments of the present invention, there is provided a multi-power supply method applied to an electronic device having at least two power supply circuits, the method including: acquiring the current value of each power supply circuit; judging whether a preset first rule is met or not according to the current value of each power supply circuit; and when the first rule is determined not to be met, gradually adjusting the output voltage of at least one path of power supply by a preset step length until the current value of each path of power supply circuit after adjustment meets the first preset rule.
According to an implementation of the embodiment of the invention, the first rule includes: the current of each power supply circuit in the at least two power supply circuits is the same.
According to an implementation of the embodiment of the invention, the first rule includes: the ratio of the current value of each power supply circuit in the at least two power supply circuits is the same as the ratio of the rated power value of the power supply corresponding to each power supply circuit; the rated power value of the power supply corresponding to each power supply circuit is obtained in advance.
According to an implementation manner of the embodiment of the invention, the method further comprises: determining the value of the current threshold of the charging input maximum power according to the rated power value of the power supply corresponding to each path of power supply circuit generated by current; obtaining the total output current after the current of each power circuit is combined; and judging whether the total output current is greater than or equal to the charging input maximum power current threshold value or not, and executing a first process when the total output current is determined to be greater than or equal to the charging input maximum power current threshold value.
According to an embodiment of the present invention, the first current threshold is obtained by: obtaining the sum of the rated power values of the power supplies corresponding to each path of power supply circuit generated by current; carrying out derating processing on the added value according to preset adjusting parameters to obtain a derated power value; and obtaining a first current threshold according to the de-rated power value.
According to an implementation manner of the embodiment of the invention, the method further comprises: obtaining the rated power value of the power supply corresponding to each path of power supply circuit generated by current; and judging whether the input power of each path of power supply circuit generated by the current is greater than or equal to the rated power value of the corresponding power supply or not, and executing second processing on the corresponding path of power supply circuit greater than or equal to the rated power value of the corresponding power supply.
According to a second aspect of the embodiments of the present invention, there is provided a multi-power supply apparatus, the apparatus includes at least two power circuits, at least two current detection modules, at least one power voltage adjustment module, and a power management module, wherein each power circuit is correspondingly connected to a power source, and at least one of the power sources is a power source with adjustable output voltage; each path of power supply circuit is correspondingly connected with a current detection module, one end of each current detection module is connected with the corresponding path of power supply circuit, and the other end of each current detection module is connected with the power supply management module; one end of the power supply voltage adjusting module is connected with the power supply management module, and the other end of the power supply voltage adjusting module is connected with a power supply with adjustable output voltage; the power supply management module is connected with each current detection module and the power supply voltage regulation module and is used for executing the following multi-power supply method: acquiring the current value of each power supply circuit; judging whether a preset first rule is met or not according to the current value of each power supply circuit; and when the first rule is determined not to be met, gradually adjusting the output voltage of at least one path of power supply by a preset step length until the current value of each path of power supply circuit after adjustment meets the first preset rule.
According to an embodiment of the present invention, the current detection module includes a first detection resistance submodule and a current obtaining submodule, wherein: the first detection resistance submodule is connected in series with a power circuit corresponding to the current detection module; the current acquisition submodule is connected with the first detection resistor.
According to an embodiment of the present invention, the power supply management module includes a current comparator, and accordingly, the current detection module includes an operational amplifier circuit.
According to an embodiment of the present invention, the apparatus further includes at least two power detection modules, wherein one end of each of the power detection modules is correspondingly connected to a power source, and the other end of each of the power detection modules is connected to the power supply management module.
According to an implementation manner of the embodiment of the invention, the apparatus further comprises: and the total current limiting module is arranged on a circuit after the at least two power supply circuits are converged.
According to an embodiment of the present invention, the total current limiting module includes a second detection resistor sub-module and a charging chip, wherein: the second detection resistance submodule is connected in series with a circuit formed by the confluence of at least two power supply circuits; the charging chip is connected with the second detection resistance submodule, and the total output current is obtained from the second detection resistance submodule; the charging chip is used for executing the following method: determining the value of the current threshold of the charging input maximum power according to the rated power value of the power supply corresponding to each path of power supply circuit generated by current; obtaining the total output current after the current of each power circuit is combined; and judging whether the total output current is greater than or equal to the charging input maximum power current threshold value or not, and executing a first process when the total output current is determined to be greater than or equal to the charging input maximum power current threshold value.
According to an embodiment of the present invention, the power supply management module is further connected to the central processing unit, and configured to execute the following method: obtaining the rated power value of the power supply corresponding to each path of power supply circuit generated by current; and judging whether the input power of each path of power supply circuit generated by the current is greater than or equal to the rated power value of the corresponding power supply or not, and executing second processing on the corresponding path of power supply circuit greater than or equal to the rated power value of the corresponding power supply.
The embodiment of the invention provides a multi-power supply method and a device, the device comprises at least two paths of power supply circuits, at least two current detection modules, at least one power supply voltage regulation module and a power supply management module, wherein the power supply management module is connected with each current detection module and the power supply voltage regulation module and is used for executing the following multi-power supply method: acquiring the current value of each power supply circuit; judging whether a preset first rule is met or not according to the current value of each power supply circuit; and when the first rule is determined not to be met, gradually adjusting the output voltage of at least one path of power supply by a preset step length until the current value of each path of power supply circuit after adjustment meets the first preset rule. Therefore, a plurality of power supplies can be used for supplying power simultaneously so as to meet the high-power requirement of the electronic equipment.
It is to be understood that the teachings of the present invention need not achieve all of the above-described benefits, but rather that specific embodiments may achieve specific technical results, and that other embodiments of the present invention may achieve benefits not mentioned above.
Drawings
The above and other objects, features and advantages of exemplary embodiments of the present invention will become readily apparent from the following detailed description read in conjunction with the accompanying drawings. Several embodiments of the invention are illustrated by way of example, and not by way of limitation, in the figures of the accompanying drawings and in which:
in the drawings, the same or corresponding reference numerals indicate the same or corresponding parts.
FIG. 1 is a schematic diagram of a flow chart of an implementation of a multi-power supply method according to an embodiment of the present invention;
fig. 2 is a schematic flow chart of a specific implementation of a method for supplying power by using multiple power supplies according to an embodiment of the present invention;
FIG. 3 is a schematic diagram illustrating a structure of a multi-power supply apparatus according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a multi-power supply apparatus according to another embodiment of the present invention;
FIG. 5 is a schematic diagram of a multi-power supply apparatus according to another embodiment of the present invention;
fig. 6 is a schematic structural diagram of a multi-power supply device according to another embodiment of the present invention.
Detailed Description
In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
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. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
According to a first aspect of the embodiments of the present invention, there is provided a multi-power supply method, applied to an electronic device having at least two power circuits, as shown in fig. 1, the method including: an operation 110, obtaining a current value of each power circuit; operation 120, determining whether a preset first rule is satisfied according to the current values of the power circuits; in operation 130, when it is determined that the first rule is not satisfied, the output voltage of at least one power supply is adjusted step by step with a preset step length until the current value of each power supply circuit after adjustment satisfies the first preset rule.
Generally, a typical electronic device is provided with a default power circuit and connected with a power source. For desktop computers, the Power source connected to the default Power circuit may be an internal Power source, while for notebook computers or other mobile devices, the Power source connected to the default Power circuit is mostly an external Power adapter (Power adapter).
If the electronic device wants to have the capability of supplying power through at least two power supply circuits, the electronic device needs to have an additional power supply circuit and an interface for connecting with an external power adapter. For example, in recent years, with the continuous popularization and application of the Type-C interface technology, many notebook computers or other mobile devices are provided with a Type-C interface, and can be conveniently connected with a power adapter with the Type-C interface, and an additional power circuit is formed by connecting the power adapter with the Type-C interface and is cooperated with a default power circuit, so that it is possible to realize multi-power supply through a multi-power circuit.
In operation 110, each power circuit is connected to a power source. When the power supply is energized, a current is generated in the power circuit. The current value of each power circuit is obtained, so that the cooperative working condition of each power circuit and the power supply state of each power circuit can be known. In this embodiment of the present invention, a method for obtaining the current value of each power circuit is not limited, and any suitable method that can obtain the current value of the power circuit may be used.
In operation 120, the first rule is to control a state that each supply current is to finally reach, for example, the currents of each power circuit are equal; or the current of each power supply circuit is proportional to the rated power; or the current of each power circuit reaches a certain preset fixed value corresponding to each circuit, and the like. The first rule can be flexibly formulated according to the implementation conditions of an implementer and the power supply target to be achieved, so that the multi-power supply method provided by the embodiment of the invention has stronger applicability, and various problems caused by unreasonable current of each power supply circuit in the multi-power supply process can be solved.
In operation 130, when the current of each power circuit does not satisfy the first rule, the current of each power circuit needs to be adjusted to satisfy the first rule, so that the current of each power circuit finally reaches the state set by the first rule, thereby achieving the specific goal of multi-power supply. In this embodiment, the adjustment is performed by adjusting the output voltage of at least one power supply step by step in preset steps. It should be noted that the at least one power supply must be a power supply with adjustable output voltage, for example, a power adapter with Type-C interface. The power adapter with the Type-C interface generally has a voltage detection function, and the output voltage of the power adapter can be detected and controlled through a CC pin signal in a power supply protocol. In addition, a high level or a low level can be sent to the power adapter with the Type-C interface to adjust the output voltage of the power adapter.
According to an implementation of the embodiment of the invention, the first rule includes: the current of each power supply circuit in the at least two power supply circuits is the same.
Generally, when a plurality of power supplies are connected, the output voltage of each power supply cannot be guaranteed to be absolutely equal, and at this time, the current of the power supply circuit is always supplied from the power supply with high voltage preferentially, so that the power output distribution of the two power supplies is unbalanced in most cases, and the power is output from only one power supply in extreme cases.
For this reason, in the present embodiment, the first rule is set to make the current of each of the at least two power circuits the same, and the main objective of adjusting the output voltage of the power supply is to achieve the supply balance of the current, so as to ensure that the power output of each power supply is also balanced, i.e. each power supply can supply power normally.
In the present embodiment, what target current value the current of the power supply circuit is to reach after the power supply output voltage is adjusted can be flexibly set according to the implementation. For example, if the output voltage of one power supply is not adjustable in the power supplies connected by at least two power supply circuits, the current value of the power supply can be used as the target current value; alternatively, the average value of the current values of the output voltage adjustable power supply may also be used as the target current value.
According to an implementation of the embodiment of the invention, the first rule includes: the ratio of the current value of each power supply circuit in the at least two power supply circuits is the same as the ratio of the rated power value of the power supply corresponding to each power supply circuit; the rated power value of the power supply corresponding to each power supply circuit is obtained in advance.
When the currents of each power circuit are the same, although each power supply can output power, when the powers supplied by a plurality of power supplies are different in magnitude and have large difference, for example, power supply a is 90W, and power supply B is 45W, the following situations can occur when the powers supplied by the two power supplies are equal: when the low power 45W power supply is fully loaded, the high power 90W also has half the power unused. This results in the power of the power supply a not being fully utilized. If the output power of the two power supplies can be output according to the maximum power proportion, and A: B is 2:1, the power of the two power supplies can output the maximum power at the same time, and the effect of power addition is achieved.
Therefore, in the present embodiment, the first rule is set to the ratio of the current values of each of the at least two power circuits, which is the same as the ratio of the rated power values of the power supplies corresponding to the power circuits, and the main objective of adjusting the output voltage of the power supply is to achieve the output power of the power supply in the maximum power ratio, thereby ensuring that each power output can be fully utilized.
The rated power value of the power supply corresponding to each power supply circuit is obtained in advance. For built-in power supplies, their power ratings are generally known; for an external power adapter, if the adapter meets a certain standard, the rated power can be obtained according to the standard, and if the ID of the adapter corresponds to a certain rated power, the corresponding rated power can also be obtained by obtaining the ID of the adapter.
In this embodiment, the target to be achieved by adjusting the power supply output voltage is not a specific current value, but the ratio of the current values of the power supply circuits is the same as the ratio of the rated power values of the power supplies corresponding to the power supply circuits.
Fig. 2 shows a specific implementation flow of a method for supplying power by applying multiple power supplies according to an embodiment of the present invention, including:
and 250, gradually adjusting the output voltage of at least one path of power supply by a preset step length, then returning to the step 230, and obtaining the current value again until the preset current proportion is reached.
When the output voltage of at least one power circuit is adjusted, the current value of one circuit can be selected as a reference, namely the current value of the power circuit is kept unchanged, and the ratio of the current value of the other power circuit to the current value of the power circuit to the rated power of the power supply corresponding to the power circuit is the same by adjusting the output voltage of the power supply connected with the other power circuit.
It should be noted that the embodiment shown in fig. 2 is only an embodiment of an application of the embodiment of the present invention, and is an exemplary illustration, not a limitation of the embodiment of the present invention, and the implementer may adopt any suitable embodiment to achieve the predetermined goal according to the implementation conditions and the application scenarios.
According to an implementation manner of the embodiment of the invention, the method further comprises: determining the value of the current threshold of the charging input maximum power according to the rated power value of the power supply corresponding to each path of power supply circuit generated by current; obtaining the total output current after the current of each power circuit is combined; and judging whether the total output current is greater than or equal to the charging input maximum power current threshold value or not, and executing a first process when the total output current is determined to be greater than or equal to the charging input maximum power current threshold value.
In the present embodiment, the value of the charging input maximum power current threshold is generally obtained by the following steps: adding the rated power values of the power supplies corresponding to each path of power supply circuit to obtain rated total power; and calculating a corresponding maximum power current threshold according to the maximum power threshold. For example, when only any one power source supplies power, the rated power of the power source is set to set the maximum power current threshold; when a power supply is inserted, the rated powers of the two power supply sources are added to obtain the rated total power, then the maximum power current threshold is set according to the added rated total power, and the like.
In the present embodiment, the first process performed when the total output current is equal to or greater than the charging input maximum power current threshold is not limited, and the implementer may determine the specific operation of the first process according to the implementation condition and the application scenario, for example, stop charging the battery to protect the battery.
According to an embodiment of the present invention, the first current threshold is obtained by: obtaining the sum of the rated power values of the power supplies corresponding to each path of power supply circuit generated by current; carrying out derating processing on the added value according to preset adjusting parameters to obtain a derated power value; and obtaining a first current threshold according to the de-rated power value.
In this embodiment, in order to ensure the operational reliability of the power supply, the maximum power current threshold may be derated to some extent on the basis of the total rated power obtained by adding the rated powers of the power supplies or the power supplies, that is, subtracting a preset power value from the total rated power to obtain a value, and using the derated value as the maximum power current threshold. Since this arrangement only limits the charging current when the system is over-powered, the derating arrangement does not affect system performance, but only charges at a slightly slower rate, but also much faster than a single power supply.
According to an implementation manner of the embodiment of the invention, the method further comprises: obtaining the rated power value of the power supply corresponding to each path of power supply circuit generated by current; and judging whether the input power of each path of power supply circuit generated by the current is greater than or equal to the rated power value of the corresponding power supply or not, and executing second processing on the corresponding path of power supply circuit greater than or equal to the rated power value of the corresponding power supply.
In the present embodiment, the method of obtaining the rated power value of the power supply corresponding to each power supply circuit in which current is generated is not limited, and may be obtained from a known information storage system; or may be acquired in real time by a power supply protocol.
In the present embodiment, it is also not limited to executing the second processing on the power circuits greater than or equal to the corresponding power circuits, and an implementer may determine the specific operation of the second processing according to the implementation condition and the application scenario, for example, sending a signal to the central processing unit to notify the system of the down-conversion so as to avoid downtime.
According to a second aspect of the embodiments of the present invention, there is provided a multi-power supply apparatus, the apparatus includes at least two power circuits, at least two current detection modules, at least one power voltage adjustment module, and a power management module, wherein each power circuit is correspondingly connected to a power source, and at least one of the power sources is a power source with adjustable output voltage; each path of power supply circuit is correspondingly connected with a current detection module, one end of each current detection module is connected with the corresponding path of power supply circuit, and the other end of each current detection module is connected with the power supply management module; one end of the power supply voltage adjusting module is connected with the power supply management module, and the other end of the power supply voltage adjusting module is connected with a power supply with adjustable output voltage; the power supply management module is connected with each current detection module and the power supply voltage regulation module and is used for executing the following multi-power supply method: acquiring the current value of each power supply circuit; judging whether a preset first rule is met or not according to the current value of each power supply circuit; and when the first rule is determined not to be met, gradually adjusting the output voltage of at least one path of power supply by a preset step length until the current value of each path of power supply circuit after adjustment meets the first preset rule.
The power supply circuit is a conductive circuit connected with a power supply and used for transmitting electricity provided by the power supply to each electric device.
The current detection module is used for obtaining the current value of the power circuit, and in this embodiment, the implementation manner of the current detection module is not limited, and any suitable device and method capable of obtaining the current value of the power circuit may be used. The current value of the power circuit is obtained, and then the subsequent current comparison can be carried out.
The Power supply voltage adjusting module is a module used for interacting with a Power supply with adjustable output voltage, for example, for a Power adapter with a Type-C interface, a Power supply module (PD) can be used as the Power supply voltage adjusting module, and the purpose of adjusting the current of a Power circuit is achieved by using a Power supply protocol to interact with the Power adapter with the Type-C interface to specify the Power supply voltage. The power output voltage is adjusted through the power supply voltage adjusting module, balanced power supply or sufficient power supply of each path of power supply circuit can be guaranteed, and therefore the requirement of electronic equipment for high power can be met more quickly and efficiently.
The power supply management module is generally a module that can receive current information, perform judgment and execute corresponding operations, and may be a chip, such as an Embedded Controller (EC), or a current comparator. The power supply management module can be regarded as a core processing module of the multi-power supply device in the embodiment of the invention, and the module can collect current information of each power supply circuit, compare the current of each power supply circuit and adjust the output voltage of the power supply, so that the aim of multi-power supply balanced power supply or full power supply is fulfilled.
The power supply is connected with the power circuit, and can be an internal power supply or an external power adapter.
According to an embodiment of the present invention, the current detection module includes a first detection resistance submodule and a current obtaining submodule, wherein: the first detection resistance submodule is connected in series with a power circuit corresponding to the current detection module; the current acquisition submodule is connected with the first detection resistor.
In this embodiment, the first detection resistor submodule is usually a resistor connected in series with the power circuit, and the current obtaining submodule is a detection device capable of obtaining a current signal of the resistor.
According to an embodiment of the present invention, the power supply management module includes a current comparator, and accordingly, the current detection module includes an operational amplifier circuit.
In the present embodiment, a current comparator is used as a power supply management module to compare the currents of at least two power supply circuits. The current comparator adopts an integrated operational amplifier open loop form, converts a current signal into a voltage signal through a resistance circuit at an input signal end, and then compares the voltage signal. Accordingly, in the present embodiment, the operational amplifier circuit is used as the current detection module. The operational amplifier circuit is a circuit composed of operational amplifiers, and can amplify the detected current signal to a required degree for comparison by using a current comparator.
According to an embodiment of the present invention, the apparatus further includes at least two power detection modules, wherein one end of each of the power detection modules is correspondingly connected to a power source, and the other end of each of the power detection modules is connected to the power supply management module.
In this embodiment, the power detection module is used to obtain the rated power of the power supply, and when the power supply is connected to the electronic device, the power detection module can obtain some factory information of the power supply, such as an ID of the adapter or a specific standard that the adapter meets. The power detection module sends the information to the power supply management module, and the power supply management module can obtain the rated power of the power supply according to the information and determine the current proportion of each path of power supply circuit according to the rated power.
According to an implementation manner of the embodiment of the invention, the apparatus further comprises: and the total current limiting module is arranged on a circuit after the at least two power supply circuits are converged.
The total current limit module is used for controlling the total output current after the power circuits are gathered so as to prevent the battery being charged from being damaged.
According to an embodiment of the present invention, the total current limiting module includes a second detection resistor sub-module and a charging chip, wherein: the second detection resistance submodule is connected in series with a circuit formed by the confluence of at least two power supply circuits; the charging chip is connected with the second detection resistance submodule, and the total output current is obtained from the second detection resistance submodule; the charging chip is used for executing the following method: determining the value of the current threshold of the charging input maximum power according to the rated power value of the power supply corresponding to each path of power supply circuit generated by current; obtaining the total output current after the current of each power circuit is combined; and judging whether the total output current is greater than or equal to the charging input maximum power current threshold value or not, and executing a first process when the total output current is determined to be greater than or equal to the charging input maximum power current threshold value.
According to an embodiment of the present invention, the power supply management module is further connected to the central processing unit, and configured to execute the following method: obtaining the rated power value of the power supply corresponding to each path of power supply circuit generated by current; and judging whether the input power of each path of power supply circuit generated by the current is greater than or equal to the rated power value of the corresponding power supply or not, and executing second processing on the corresponding path of power supply circuit greater than or equal to the rated power value of the corresponding power supply.
In this embodiment, the power supply management module may further compare whether the current value of each power supply circuit exceeds the current value corresponding to the rated power of the power supply circuit, and if so, send a pro _ hot # signal to the central processing unit to notify the system of reducing the frequency to reduce the power consumption, thereby avoiding a system downtime caused by the start-up protection of the power adapter.
Several possible embodiments of the multi-power-supply power supply device will be described with reference to the schematic structural diagrams of the multi-power-supply power supply device according to the embodiment of the invention shown in fig. 3 to 6.
It should be noted that, for simplicity and understanding, the following embodiments are described using two-way power circuits, but do not represent that the embodiments of the present invention can only use two-way power circuits, and the implementer can implement a power supply device with three or more power supplies by using the same principle and similar layout. Of course, the implementation of power supply by using two power supply circuits is simpler, and in terms of the current application scenario, the two power supply circuits should meet most of the power supply requirements.
In the multi-power-supply apparatus of the embodiment shown in fig. 3, the multi-power-supply apparatus mainly performs multi-power supply by connecting a power supply 301 whose output voltage is not adjustable and a power supply Type-C power adapter 303 whose output voltage is adjustable, wherein the power supply 301 inputs current through a power supply circuit 302, and the Type-C power adapter 303 inputs current through a power supply circuit 304. A first detection resistor submodule 3061 is connected in series with the power circuit 302, and both ends of the first detection resistor submodule 3061 are also connected with a current obtaining submodule 3062. The current obtaining submodule 3062 obtains a current value of the power circuit 302 through the first detecting resistor submodule 3061, and transmits the current value to the embedded control module 305 through a current signal. Similarly, the current obtaining submodule 3072 obtains a current value of the power circuit 304 through the first detection resistor submodule 3071, and transmits the current value to the embedded control module 305 through the current signal. The embedded control module 305, as the power management module of this embodiment, receives the electrical signal, compares whether the current value of the power circuit 304 is equal to the current value of the power circuit 302, and if so, locks the output voltage value of the power Type-C power adapter 303, if not, further determines whether the current value of the power circuit 304 is smaller than the current value of the power circuit 302, if so, notifies the power supply module 304 via the I2C bus to increase the output voltage (25mV) of the first-order Type-C power adapter, and if so, notifies the power supply module 304 via the I2C bus to decrease the output voltage (25mV) of the first-order Type-C power adapter. The power supply module 304 regulates the voltage via the CC pin signal of the power supply protocol to regulate the output voltage of the Type-C power adapter 303. The above process is then repeated until the current value on power supply circuit 304 is equal to the current value on power supply circuit 302.
In the multi-power-supply apparatus of the embodiment shown in fig. 4, compared with the multi-power-supply apparatus of the embodiment shown in fig. 3, the embedded control module 305 determines whether to notify the power supply module 304 via the I2C bus of the voltage being adjusted higher by one step or lower by one step, not according to whether the current value on the power circuit 302 is equal to the current value on the power circuit 302, but according to whether the ratio of the current value on the power circuit 302 to the current value on the power circuit 304 is equal to the ratio of the rated power of the power supply 301 to the rated power of the Type-C power adapter 303. In the multi-power-supply device of the embodiment, in order to obtain the rated power of the power supply 301 and the rated power of the Type-C power adapter 303, the power supply ID is obtained when the power supply 301 and the Type-C power adapter 303 are connected, and the rated power corresponding to the power supply ID is obtained from the corresponding table stored in the embedded control module 305 according to the power supply ID, as shown in fig. 4, the power supply ID of the power supply 301 is ID1, and the power supply ID of the Type-C power adapter 303 is ID 2.
In the multi-power-supply apparatus of the embodiment shown in fig. 5, compared with the multi-power-supply apparatus of the embodiment shown in fig. 4, a total current limiting module composed of the second detection resistor sub-module 3091 and the charging chip 3092 is added. The second detection resistor submodule 3091 is connected in series with a circuit formed by the power circuit 302 and the power circuit 304; the charging chip 3092 is connected with the second detection resistor submodule 3091, and the total output current is obtained from the second detection resistor submodule 3091; the charging chip 3092 determines the value of the charging input maximum power current threshold according to the rated power of the power supply 301 and the rated power value of the Type-C power adapter 303; and judging whether the total output current is greater than or equal to the charging input maximum power current threshold or not, and stopping charging when the total output current is determined to be greater than or equal to the charging input maximum power current threshold.
Besides, the embedded control module 305 adjusts the current of the power circuit 304 according to the current value of the power circuit, and the embedded control module 305 is further connected to the central processing unit 308, and is configured to determine whether the input power of each power circuit generated by the current is greater than or equal to the rated power value of the corresponding power supply, and if any corresponding power circuit is greater than or equal to the rated power value, send a pro _ hot # signal to the central processing unit to notify the system of down conversion so as to avoid downtime.
In the embodiment multiple power supply apparatus shown in fig. 6, unlike the previous embodiment multiple power supply apparatus, the multiple power supply apparatus uses a current comparator 405 as a power supply management block. The multi-power supply apparatus uses a first operational amplifier circuit composed of a first resistor R1, a second resistor R0, a variable resistor Rf and a current amplifier 402 as a current detection module corresponding to the power source 401, and uses a second operational amplifier circuit composed of a first resistor R1, a second resistor R0, a variable resistor Rf and a current amplifier 404 as a current detection module corresponding to another power source 403. Wherein at least one of the power supply 401 and the power supply 403 is a power adapter having a Type-C interface. The first operational amplifier circuit obtains the current value of the power source 401, amplifies the current to a required degree through the current amplifier component 402, and then transmits the amplified current to the current comparator 405. The second operational amplifier circuit obtains the current value of the power supply 403, amplifies the current to a required degree through the current amplifier component 404, and then transmits the amplified current to the current comparator 405. The current comparator 405 compares the current levels of the power circuits corresponding to the power source 401 and the power source 402 to determine whether to adjust one of the power sources with adjustable output voltages through the power supply module 406. The amplification factors of the current amplifier 402 and the current amplifier 404 can be adjusted by the variable resistor Rf. For example, the resistance value of the variable resistor Rf is adjusted according to the rated power obtained by the power adapter ID (ID3) of the power source 401 and the power adapter ID (ID4) of the power source 403, so that the current amplifier 402 and the current amplifier 404 use different amplification factors, and when the amplification factors used by the current amplifier 402 and the current amplifier 404 are equal to each other only when the current value ratio and the power value ratio of the power source circuit are the same, the current value ratio and the power value ratio of each power source circuit can be equal. At this time, if the two amplified currents are found to be unequal by the current comparator 405, the output voltage of the power adapter with the Type-C interface is adjusted by the following method: sending a high level to a power adapter with a Type-C interface to enable the power adapter to reduce the output voltage of the Type-C power adapter; and sending a low level to the power adapter with the Type-C interface to enable the power adapter to increase the output voltage of the Type-C power adapter.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
In the several embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. The above-described device embodiments are merely illustrative, for example, the division of a unit is only one logical function division, and there may be other division ways in actual implementation, such as: multiple units or components may be combined, or may be integrated into another device, or some features may be omitted, or not implemented. In addition, the coupling, direct coupling or communication connection between the components shown or discussed may be through some interfaces, and the indirect coupling or communication connection between the devices or units may be electrical, mechanical or other forms.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units; can be located in one place or distributed on a plurality of network units; some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, all the functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may be separately regarded as one unit, or two or more units may be integrated into one unit; the integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.
Those of ordinary skill in the art will understand that: all or part of the steps for realizing the method embodiments can be completed by hardware related to program instructions, the program can be stored in a computer readable storage medium, and the program executes the steps comprising the method embodiments when executed; and the aforementioned storage medium includes: various media capable of storing program codes, such as a removable storage medium, a Read Only Memory (ROM), a magnetic disk, and an optical disk.
Alternatively, the integrated unit of the present invention may be stored in a computer-readable storage medium if it is implemented in the form of a software functional module and sold or used as a separate product. Based on such understanding, the technical solutions of the embodiments of the present invention may be essentially implemented or a part contributing to the prior art may be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for enabling a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the methods of the embodiments of the present invention. And the aforementioned storage medium includes: a removable storage medium, a ROM, a magnetic disk, an optical disk, or the like, which can store the program code.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (7)
1. A multi-power supply device is characterized in that the device comprises at least two power circuits, at least two current detection modules, at least one power voltage regulation module and a power supply management module, wherein,
each path of power supply circuit is correspondingly connected with a power supply, and at least one of the power supplies is a power supply with adjustable output voltage;
each path of power supply circuit is correspondingly connected with one current detection module, one end of each current detection module is connected with the corresponding path of power supply circuit, and the other end of each current detection module is connected with the power supply management module;
one end of the power supply voltage adjusting module is connected with the power supply management module, and the other end of the power supply voltage adjusting module is connected with the power supply with adjustable output voltage;
the power supply management module is connected with each current detection module and the power supply voltage regulation module.
2. The apparatus of claim 1, wherein the current detection module comprises a first detection resistance sub-module and a current acquisition sub-module, wherein:
the first detection resistance submodule is connected in series with a power circuit corresponding to the current detection module;
the current acquisition submodule is connected with the first detection resistor.
3. The apparatus of claim 1, wherein the power management module comprises a current comparator,
correspondingly, the current detection module comprises an operational amplifier circuit.
4. The apparatus of claim 1, further comprising at least two power detection modules, wherein one end of each power detection module is correspondingly connected to a power source, and the other end of each power detection module is connected to the power management module.
5. The apparatus of claim 1, further comprising:
and the total current limiting module is arranged on a circuit after the at least two power supply circuits are converged.
6. The apparatus of claim 5, wherein the total current limit module comprises a second sense resistor submodule and a charging chip, wherein:
the second detection resistance submodule is connected in series with a circuit after the at least two power supply circuits are converged;
the charging chip is connected with the second detection resistance submodule, and total output current is obtained from the second detection resistance submodule.
7. The apparatus of claim 1, wherein the power management module is further coupled to a central processor.
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| WO2023179242A1 (en) * | 2022-03-25 | 2023-09-28 | 追觅创新科技(苏州)有限公司 | Constant-power control apparatus and method for electronic device, and device and storage medium |
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| WO2023179242A1 (en) * | 2022-03-25 | 2023-09-28 | 追觅创新科技(苏州)有限公司 | Constant-power control apparatus and method for electronic device, and device and storage medium |
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