Power management system and power management method

Abstract

The invention discloses a power management system and a power management method. The power management system includes an AC power supply, a first battery, a first charger, a second battery, a second charger, and a control circuit. The first charger is electrically connected to the first battery, the electronic device and the AC power supply, and the second charger is electrically connected to the second battery, the electronic device and the AC power supply. The control circuit is electrically connected to the first charger and the second charger, and is configured to detect the capacities of the first battery and the second battery. The control circuit sets a first system power of the first charger to a first rated power, and sets a second system power of the second charger to be less than the first rated power. The control circuit enables the accelerated boost mode of the first charger and disables the accelerated boost mode of the second charger. When the acceleration boost mode is started, the alternating current power supply does not continue to charge the first battery and the second battery, so that the load obtains stable electric energy to operate.

Description

Technical Field

[0001] The present invention relates to a power management system and a power management method, and in particular to a power management system and a power management method supporting an accelerated voltage boost mode. Background Art

[0002] Currently, only a charger and a battery are usually configured inside a computer device. When the power consumption of the computer device exceeds the rated power of the AC power supply, the control circuit enables the charger's accelerated boost mode. When the power consumption of the computer device does not exceed the rated power of the AC power supply, the control circuit disables the charger's accelerated boost mode.

[0003] Since the computer device only supports the accelerated boost mode applicable to a single charger, the charging speed of the battery to the electronic device is limited. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a power management system for electronic devices in view of the deficiencies in the prior art. The power management system includes an AC power supply, a first battery, a first charger, a second battery and a control circuit. The first charger is electrically connected to the first battery, the electronic device and the AC power supply. The second charger is electrically connected to the second battery, the electronic device and the AC power supply. The control circuit is electrically connected to the first charger and the second charger, and is configured to detect the capacity of the first battery and the second battery. The control circuit sets the first system power of the first charger to the first rated power, and sets the second system power of the second charger to be less than the first rated power. The control circuit enables the accelerated boost mode of the first charger and disables the accelerated boost mode of the second charger.

[0005] Preferably, the control circuit is configured to enable an accelerated boost mode of the first charger when a current capacity of the first battery is greater than or equal to a capacity critical value; the control circuit is configured to disable the accelerated boost mode of the first charger when the current capacity of the first battery is less than the capacity critical value; the control circuit is configured to disable an accelerated boost mode of the second charger when the current capacity of the first battery is less than a current capacity of the second battery.

[0006] Preferably, when the first charger enters the accelerated boost mode, the first charger allows the first battery and the AC power supply to power the electronic device at the same time; when the first charger does not enter the accelerated boost mode, the first charger only allows the AC power supply to power the electronic device.

[0007] Preferably, the control circuit is also configured to disable an accelerated boost mode of the second charger when a current capacity of the first battery is greater than a current capacity of the second battery; the control circuit is also configured to select to enable the accelerated boost mode of the first charger or the accelerated boost mode of the second charger when a current capacity of the first battery is equal to a current capacity of the second battery.

[0008] Preferably, the difference between the first system power and the second system power is greater than or equal to 5 watts.

[0009] The technical problem to be solved by the present invention is to provide a power management method applicable to electronic devices in view of the deficiencies in the prior art. The power management method includes configuring a control circuit to perform the following steps: setting a first system power of a first charger equal to the rated power of an AC power supply, and setting a second system power of a second charger less than the first rated power; enabling an accelerated boost mode of the first charger; and disabling an accelerated boost mode of the second charger.

[0010] Preferably, the power management method also includes detecting a current capacity of a first battery and a current capacity of a second battery, and when the current capacity of the first battery is greater than or equal to a capacity critical value, enabling an accelerated boost mode of the first charger; when the current capacity of the first battery is less than the capacity critical value, disabling the accelerated boost mode of the first charger.

[0011] Preferably, the power management method further includes configuring the control circuit to set the first system power equal to the first rated power and set the second system power less than the first rated power when a current capacity of the first battery is less than a current capacity of the second battery.

[0012] Preferably, the power management method further includes configuring the control circuit to set the first system power equal to the first rated power and set the second system power less than the first rated power when a current capacity of the first battery is greater than a current capacity of the second battery.

[0013] Preferably, the power management method also includes that when entering the accelerated boost mode, the first charger allows the first battery and the AC power supply to power the electronic device at the same time, and when not entering the accelerated boost mode, the first charger only allows the AC power supply to power the electronic device.

[0014] One of the beneficial effects of the present invention is that in the power management system and power management method provided by the present invention, when the acceleration boost mode of the first charger is enabled, the AC power supply will not continue to charge the first battery and the second battery, so that the load can obtain stable power to operate.

[0015] To further understand the features and technical contents of the present invention, please refer to the following detailed description and drawings of the present invention. However, the drawings provided are only for reference and description and are not intended to limit the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a functional block diagram of an embodiment of the power management system provided by the present invention.

[0017] Figure 2 For application Figure 1 Flow chart of a first embodiment of a power management method of a power management system.

[0018] Figure 3 For application Figure 1 Flow chart of a second embodiment of a power management method of a power management system.

[0019] Figure 4A and Figure 4B For application Figure 1 Flow chart of a third embodiment of a power management method of a power management system.

[0020] Figure 5A and Figure 5B For application Figure 1 Flow chart of a fourth embodiment of a power management method of a power management system. DETAILED DESCRIPTION

[0021] The following is an explanation of the implementation methods of the "power management system and power management method" provided by the present invention through specific embodiments. Those skilled in the art can understand the advantages and effects of the present invention from the content provided in this specification. The present invention can be implemented or applied through other different specific embodiments, and the details in this specification can also be modified and changed in various ways based on different viewpoints and applications without departing from the concept of the present invention. In addition, the drawings of the present invention are only simple schematic illustrations and are not depicted in actual size. It is stated in advance. The following implementation methods will further explain the relevant technical content of the present invention in detail, but the content provided is not intended to limit the scope of protection of the present invention.

[0022] It should be understood that, although the terms "first", "second", "third", etc. may be used herein to describe various components or signals, these components or signals should not be limited by these terms. These terms are mainly used to distinguish one component from another component, or one signal from another signal. In addition, the term "or" used herein may include any one or more combinations of the associated listed items depending on the actual situation.

[0023] Figure 1 This is a functional block diagram of an embodiment of the power management system provided by the present invention. Figure 1 , the power management system is applicable to an electronic device E, and the power management system includes an AC power supply 1, a first battery 2, a first charger 3, a second battery 4, a second charger 5 and a control circuit 6. The first charger 3 is electrically connected to the first battery 2, the load L of the electronic device E, the AC power supply 1 and the control circuit 6. The load L includes electronic components in the electronic device E that require electrical energy, such as a central processing unit, a graphics processing unit and a memory. When the tasks processed by the electronic device E become more complex and require more system resources, the power consumption of the load L increases accordingly. Taking the central processing unit (CPU) as an example, power consumption levels such as power limit 1 (Power Limit 1, PL1), power limit 2 (Power Limit 2, PL2), power limit 3 (Power Limit 3, PL3) and power limit 4 (Power Limit 4, PL4) may be set. Among them, PL1 usually represents the thermal design power consumption, while PL2 represents short-term power consumption, which is suitable for full-load operation or overclocking under TurboBoost frequency, that is, to allow the CPU to operate at a high clock speed, the highest power consumption that can be achieved, so usually the PL2 value will be greater than the PL1 value. As for PL3 and PL4, they are relatively higher power consumption modes.

[0024] In addition, the second charger 5 is electrically connected to the second battery 4, the load L of the electronic device E, the AC power supply 1, and the control circuit 6. It should be noted that the first charger 3 may have a first system power, which is a first stop-charging power (e.g., wattage) that prohibits the AC power supply 1 from continuing to charge the first battery 2. That is, when the power consumption of the load L is greater than or equal to the first system power, the AC power supply 1 is prohibited from continuing to charge the first battery 2. Similarly, the second charger 5 may have a second system power, which is a second stop-charging power (e.g., wattage) that prohibits the AC power supply 1 from continuing to charge the second battery 4. When the power consumption of the load L is greater than or equal to the second system power, the AC power supply 1 is prohibited from continuing to charge the second battery 4.

[0025] The control circuit 6 can be implemented by, for example, a microcontroller unit, a system on a chip, a programmable logic array, or a field programmable logic array. The control circuit 6 is electrically connected to the first charger 3 and the second charger 5. The control circuit 6 is configured to detect the capacity of the first battery 2 and the capacity of the second battery 4 so as to set the first system power of the first charger 3 and the second system power of the second charger 5. For example, the control circuit 6 sets the first system power of the first charger 3 to the first rated power, and the control circuit 6 sets the second system power of the second charger 5 to be less than the first rated power. Under this premise, there may be a difference between the first system power and the second system power, which is, for example, greater than or equal to 5 watts. In this way, when the power consumption of the load L increases over time, the AC power supply 1 will be prohibited from continuing to charge the second battery 4. Then, the acceleration boost mode of the first charger 3 is enabled by the control circuit 6, so that the AC power supply 1 and the first battery 2 supply power to the load L at the same time.

[0026] In addition, the first system power set by the first charger 3 should be slightly smaller than the rated power of the AC power supply 1. If the first system power is equal to the rated power of the AC power supply 1, when an error occurs in the first charger 3, it will cause the rated power of the AC power supply 1 to be exceeded during charging and fail to pass the safety regulations.

[0027] In an embodiment of the present invention, both the first charger 3 and the second charger 5 can operate in a turbo boost mode to allow the AC power supply 1 and the corresponding battery to supply power to the load at the same time. Specifically, the control circuit 6 can simultaneously disable the turbo boost mode of the second charger 5 when the turbo boost mode of the first charger 3 is enabled. When the turbo boost mode of the first charger 3 is enabled, the first charger 3 allows the first battery 2 and the AC power supply 1 to supply power to the load L of the electronic device E at the same time. When the turbo boost mode of the second charger 5 is disabled, the second charger 5 only allows the AC power supply 1 to supply power to the load L of the electronic device E.

[0028] Figure 2 For application Figure 1 Flow chart of a first embodiment of a power management method of a power management system of the present invention. Figure 2, in step S201, the first system power of the first charger 3 is set equal to the first rated power. In step S202, the second system power of the second charger 5 is set less than the first rated power. In step S203, the control circuit 6 disables the acceleration boost mode of the second charger 5. In step S204, the control circuit 6 enables the acceleration boost mode of the first charger 3. Specifically, since the second system power is less than the first system power, the power consumption of the load L will first reach the second system power of the second charger 5 and the AC power supply 1 will be prohibited from continuing to charge the second battery 4, and the control circuit 6 will disable the acceleration boost mode of the second charger 5. When the power consumption of the load L rises to the first system power of the first charger 3, the AC power supply 1 is prohibited from continuing to charge the first battery 2, and the control circuit 6 enables the acceleration boost mode of the first charger 3, so that the AC power supply 1 and the first battery 2 supply power to the load L at the same time.

[0029] pass Figure 2 In the power management method, when the acceleration boost mode of the first charger 3 is enabled, the AC power supply 1 will not continue to charge the first battery 2 and the second battery 4, so that the load L can obtain stable power to operate.

[0030] Figure 3 For application Figure 1 Flow chart of a second embodiment of a power management method of a power management system of the present invention. Figure 3 In step S301, the second system power of the second charger 5 is set equal to the first rated power. In step S302, the first system power of the first charger 3 is set less than the first rated power. In step S303, the control circuit 6 disables the acceleration boost mode of the first charger 3. In step S304, the control circuit 6 enables the acceleration boost mode of the second charger 5.

[0031] Specifically, since the first system power is less than the second system power, the power consumption of the load L will reach the first system power first, and the AC power supply 1 is prohibited from continuing to charge the first battery 2, and the control circuit 6 disables the acceleration boost mode of the first charger 3. When the power consumption of the load L rises to the second system power, the AC power supply 1 is prohibited from continuing to charge the second battery 4, and the control circuit 6 enables the acceleration boost mode of the second charger 5, so that the AC power supply 1 and the second battery 4 supply power to the load L at the same time.

[0032] pass Figure 3 In the power management method, when the acceleration boost mode of the second charger 5 is enabled, the AC power supply 1 will not continue to charge the first battery 2 and the second battery 4, so that the load L can obtain stable power to operate.

[0033] Figure 4A and Figure 4B For application Figure 1 Flow chart of a third embodiment of a power management method of a power management system. Figure 4A In step S401, the control circuit 6 detects the current capacity of the first battery 2 and the current capacity of the second battery 4. In step S402, the control circuit 6 determines whether the current capacity of the first battery 2 is less than or equal to the current capacity of the second battery 4. When the current capacity of the first battery 2 is less than or equal to the current capacity of the second battery 4, the process proceeds to step S403. When the current capacity of the first battery 2 is greater than the current capacity of the second battery 4, the process proceeds to step S404.

[0034] See also Figure 4A In step S403 , the control circuit 6 sets the first system power of the first charger 3 to be equal to the first rated power and sets the second system power of the second charger 5 to be less than the first rated power.

[0035] Specifically, the control circuit 6 sets the first system power of the first charger 3 by modifying the register of the first charger 3 , and sets the second system power of the second charger 5 by modifying the register of the second charger 5 .

[0036] See also Figure 4B In step S404, the control circuit 6 sets the second system power of the second charger 5 to be equal to the first rated power and sets the first system power of the first charger 3 to be less than the first rated power.

[0037] See also Figure 4A After step S403, the process proceeds to step S405. In step S405, when the power consumption of the load L is greater than or equal to the second system power, the AC power supply 1 is prohibited from continuing to charge the second battery 4, and the control circuit 6 disables the acceleration boost mode of the second charger 5.

[0038] See also Figure 4A , after step S405, proceed to step S406. In step S406, the control circuit 6 determines whether the current capacity of the first battery 2 is greater than or equal to the capacity critical value (for example, 10%). When the current capacity of the first battery 2 is greater than or equal to the capacity critical value, proceed to step S407. When the current capacity of the first battery 2 is less than the capacity critical value, proceed to step S408. In step S407, when the power consumption of the load L is greater than or equal to the first system power, the AC power supply 1 is prohibited from continuing to charge the first battery 2, and the control circuit 6 enables the accelerated boost mode of the first charger 3. In step S408, the control circuit 6 disables the accelerated boost mode of the first charger 3.

[0039] See also Figure 4B, after step S404, the process proceeds to step S409. In step S409, when the power consumption of the load L is greater than or equal to the first system power, the AC power supply 1 is prohibited from continuing to charge the first battery 2, and the control circuit 6 disables the acceleration boost mode of the first charger 3. When the first charger 3 does not enter the acceleration boost mode, the first charger 3 only allows the AC power supply 1 to supply power to the load L of the electronic device E.

[0040] See also Figure 4B , after step S409, enter step S410. In step S410, the control circuit 6 determines whether the current capacity of the second battery 4 is greater than or equal to the capacity critical value. When the current capacity of the second battery 4 is greater than or equal to the capacity critical value, enter step S411. When the current capacity of the second battery 4 is less than the capacity critical value, enter step S412. In step S411, when the power consumption of the load L is greater than or equal to the second system power, the AC power supply 1 is prohibited from continuing to charge the second battery 4, and the control circuit 6 enables the accelerated boost mode of the second charger 5. When the second charger 5 enters the accelerated boost mode, the second charger 5 allows the second battery 4 and the AC power supply 1 to simultaneously power the load L of the electronic device E.

[0041] In step S412, the control circuit 6 disables the acceleration boost mode of the second charger 5. When the second charger 5 does not enter the acceleration boost mode, the second charger 5 only allows the AC power supply 1 to supply power to the load L of the electronic device E.

[0042] Compare Figure 4A and Figure 4B A third embodiment of the power management method of Figure 2 The first embodiment of the power management method is different in that the first battery 2 and the second battery 4 with a lower capacity are charged with a large current, while the first battery 2 and the second battery 4 with a higher capacity are charged with a small current, thereby shortening the charging time.

[0043] Figure 5A and Figure 5B For application Figure 1 Flow chart of a fourth embodiment of a power management method of a power management system of the present invention. Figure 5A In step S501, the control circuit 6 detects the current capacity of the first battery 2 and the current capacity of the second battery 4. In step S502, the control circuit 6 determines whether the current capacity of the first battery 2 is greater than or equal to the current capacity of the second battery 4. When the current capacity of the first battery 2 is greater than or equal to the current capacity of the second battery 4, the process proceeds to step S503. When the current capacity of the first battery 2 is less than the current capacity of the second battery 4, the process proceeds to step S504.

[0044] See also Figure 5AIn step S503 , the control circuit 6 sets the first system power of the first charger 3 to be equal to the first rated power and sets the second system power of the second charger 5 to be less than the first rated power.

[0045] See also Figure 5B In step S504, the control circuit 6 sets the second system power of the second charger 5 to be equal to the first rated power and sets the first system power of the first charger 3 to be less than the first rated power.

[0046] See also Figure 5A After step S503, the process proceeds to step S505. In step S505, when the power consumption of the load L is greater than or equal to the second system power, the AC power supply 1 is prohibited from continuing to charge the second battery 4, and the control circuit 6 disables the acceleration boost mode of the second charger 5.

[0047] See also Figure 5A , after step S505, proceed to step S506. In step S506, the control circuit 6 determines whether the current capacity of the first battery 2 is greater than or equal to the capacity critical value. When the current capacity of the first battery 2 is greater than or equal to the capacity critical value, proceed to step S507. When the current capacity of the first battery 2 is less than the capacity critical value, proceed to step S508. In step S507, when the power consumption of the load L is greater than or equal to the first system power, the AC power supply 1 is prohibited from continuing to charge the first battery 2, and the control circuit 6 enables the accelerated boost mode of the first charger 3. In step S508, the control circuit 6 disables the accelerated boost mode of the first charger 3.

[0048] See also Figure 5B After step S504, the process proceeds to step S509. In step S509, when the power consumption of the load L is greater than or equal to the first system power, the AC power supply 1 is prohibited from continuing to charge the first battery 2, and the control circuit 6 disables the acceleration boost mode of the first charger 3.

[0049] See also Figure 5B , after step S509, proceed to step S510. In step S510, the control circuit 6 determines whether the current capacity of the second battery 4 is greater than or equal to the capacity critical value. When the current capacity of the second battery 4 is greater than or equal to the capacity critical value, proceed to step S511. When the current capacity of the second battery 4 is less than the capacity critical value, proceed to step S512. In step S511, when the power consumption of the load L is greater than or equal to the second system power, the AC power supply 1 is prohibited from continuing to charge the second battery 4, and the control circuit 6 enables the accelerated boost mode of the second charger 5.

[0050] In step S512 , the control circuit 6 disables the acceleration boost mode of the second charger 5 .

[0051] Compare Figure 5A and Figure 5B A fourth embodiment of a power management method and Figure 2 A first embodiment of a power management method, Figure 5A and Figure 5B In the fourth embodiment, the first battery 2 and the second battery 5 with a higher capacity and the AC power supply 1 discharge the load of the electronic device simultaneously.

[0052] [Beneficial effects of the embodiment]:

[0053] One of the beneficial effects of the present invention is that, in the power management system and power management method provided by the present invention, no matter whether the acceleration boost mode of the first charger or the second charger is enabled, the AC power supply will not continue to charge the first battery and the second battery, so that the load can obtain stable power and operate. When the charger with the acceleration boost mode enabled is connected to a battery with a lower capacity, the battery with a lower capacity is charged with a large current, while the battery with a higher capacity is charged with a small current, which can shorten the charging time. When the charger with the acceleration boost mode enabled is connected to a battery with a higher capacity, the battery with a higher capacity discharges to the load, so that the load can obtain more sufficient power. Since no matter whether the acceleration boost mode of the first charger or the second charger is enabled, the AC power supply will not charge the battery. Therefore, even without reducing the PL1, PL2 and PL4 of the CPU, the CPU can obtain stable power and operate, so that the system performance of the electronic device is optimized.

[0054] The contents provided above are only preferred feasible embodiments of the present invention, and are not intended to limit the claims of the present invention. Therefore, all equivalent technical changes made using the contents of the specification and drawings of the present invention are included in the claims of the present invention.

Claims

1. A power management system, characterized in that: The power management system is applicable to an electronic device, and the power management system includes: an AC power supply; a first battery; a first charger electrically connected to the first battery, the electronic device and the AC power supply; a second battery; a second charger electrically connected to the second battery, the electronic device and the AC power supply; and a control circuit electrically connected to the first charger and the second charger, the control circuit being configured to detect the capacities of the first battery and the second battery, set a first system power of the first charger to a first rated power, and set a second system power of the second charger to be less than the first rated power; The control circuit enables a boost mode of the first charger and disables a boost mode of the second charger.

2. The power management system according to claim 1, characterized in that: The control circuit is configured to enable an accelerated boost mode of the first charger when a current capacity of the first battery is greater than or equal to a capacity threshold value; the control circuit is configured to disable an accelerated boost mode of the first charger when a current capacity of the first battery is less than the capacity threshold value; the control circuit is configured to disable an accelerated boost mode of the second charger when a current capacity of the first battery is less than a current capacity of the second battery.

3. The power management system according to claim 1, wherein: When the first charger enters the accelerated boost mode, the first charger allows the first battery and the AC power supply to power the electronic device at the same time; when the first charger does not enter the accelerated boost mode, the first charger only allows the AC power supply to power the electronic device.

4. The power management system according to claim 1, characterized in that: The control circuit is also configured to disable an accelerated boost mode of the second charger when a current capacity of the first battery is greater than a current capacity of the second battery; the control circuit is also configured to select to enable the accelerated boost mode of the first charger or the accelerated boost mode of the second charger when a current capacity of the first battery is equal to a current capacity of the second battery.

5. The power management system according to claim 1, characterized in that: A difference between the first system power and the second system power is greater than or equal to 5 watts.

6. A power management method, applicable to an electronic device, characterized in that: The power management method includes configuring a control circuit to perform the following steps: Setting a first system power of a first charger equal to a first rated power, and setting a second system power of a second charger less than the first rated power; Activating an accelerated boost mode of the first charger; and A boost mode of the second charger is disabled.

7. The power management method according to claim 6, characterized in that: The power management method also includes detecting a current capacity of a first battery and a current capacity of a second battery, and enabling an accelerated boost mode of the first charger when the current capacity of the first battery is greater than or equal to a capacity critical value; and disabling the accelerated boost mode of the first charger when the current capacity of the first battery is less than the capacity critical value.

8. The power management method according to claim 6, wherein: The power management method also includes configuring the control circuit to set the first system power equal to the first rated power and set the second system power less than the first rated power when a current capacity of the first battery is less than a current capacity of the second battery.

9. The power management method according to claim 6, wherein: The power management method also includes configuring the control circuit to set the first system power equal to the first rated power and set the second system power less than the first rated power when a current capacity of the first battery is greater than a current capacity of the second battery.

10. The power management method according to claim 6, wherein: The power management method also includes the first charger allowing the first battery and the AC power supply to power the electronic device simultaneously when entering the accelerated boost mode, and the first charger only allowing the AC power supply to power the electronic device when not entering the accelerated boost mode.

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