CN111106633A - Mobile power supply and charging method thereof - Google Patents
Mobile power supply and charging method thereof Download PDFInfo
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- CN111106633A CN111106633A CN201811253200.2A CN201811253200A CN111106633A CN 111106633 A CN111106633 A CN 111106633A CN 201811253200 A CN201811253200 A CN 201811253200A CN 111106633 A CN111106633 A CN 111106633A
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Abstract
The invention discloses a mobile power supply and a charging method of the mobile power supply adopting the mobile power supply, wherein the mobile power supply comprises a charging unit, a charging unit and a charging unit; an electric core; a voltage reduction module; a first interface; and the charge and discharge management unit is electrically connected with the first interface. When the mobile power supply and the mobile phone are charged simultaneously by adopting the same adapter, the charging and discharging management unit of the mobile power supply detects the input voltage of the first interface, and controls the mobile power supply to be in a high-power charging mode or a low-power charging mode according to the detected input voltage.
Description
Technical Field
The invention relates to the field of power supplies, in particular to a mobile power supply and a charging method of the mobile power supply.
Background
Along with the popularization of mobile electronic equipment, great convenience is brought to the life of people, and along with the continuous increase of the battery capacity of the mobile electronic equipment nowadays, the charging power of 5V/1A of the traditional adapter cannot meet the charging of the existing mobile power supply.
Adapters that support high power charging (high voltage and high current) have also been developed to achieve faster charging efficiency. For convenience of use, an adapter supporting high-power charging is usually configured with at least two output interfaces, so that a user can charge at least two electronic devices at the same time.
However, since the maximum power of the adaptor is limited, even if the adaptor is used to charge two electronic devices at the same time, the maximum power actually obtained by the two electronic devices can only be the maximum power of the adaptor. When the adapter charges the electronic equipment, the common logic is that the electric equipment sends a charging demand to the adapter, the required charging power is transmitted to the adapter, the adapter distributes the charging power to the electric equipment according to the charging power required by the electric equipment, and the distributed charging power reaches the electric equipment after being lost through the wire and the interface.
Under the background, if the same adapter is used for simultaneously charging the mobile power supply and the mobile phone (or pad and the like), the mobile power supply and the mobile phone can respectively initiate charging requirements to the adapter, and at the moment, the adapter can only distribute the charging power of the mobile power supply and the mobile phone according to the charging power conditions required by the mobile power supply and the mobile phone, so that the time required by full charging of the mobile phone can be greatly increased, and the user experience is reduced.
Disclosure of Invention
In view of the above, it is desirable to provide a mobile power supply and a charging method of the mobile power supply, which can improve user experience.
A mobile power supply, comprising;
an electric core;
the output end of the voltage reduction module is electrically connected with the battery cell;
the input end of the voltage reduction module is electrically connected with a pin of the first interface, and the first interface is used for connecting external power supply so that the external power supply charges the battery cell through the voltage reduction module; and
a charge/discharge management unit for managing charge/discharge,
the charging and discharging management unit is electrically connected with the first interface to detect the input voltage of the first interface;
when the input voltage detected by the charging and discharging management unit is smaller than a first critical voltage, the charging and discharging management unit controls the mobile power supply to be in a low-power charging mode;
when the input voltage detected by the charging and discharging management unit is greater than or equal to the first critical voltage, the charging and discharging management unit controls the mobile power supply to be in a high-power charging mode;
when the mobile power supply is in a low-power charging mode, the charging power required by the mobile power supply is lower than the rated charging power of the mobile power supply; when the mobile power supply is in a high-power charging mode, the charging power required by the mobile power supply is the rated charging power of the mobile power supply.
A charging method of a mobile power supply adopting the mobile power supply comprises the following steps:
the external power supply is electrically connected with the first interface of the mobile power supply;
the charge and discharge management unit detects the input voltage of the first interface;
when the input voltage detected by the charging and discharging management unit is smaller than a first critical voltage, the charging and discharging management unit controls the mobile power supply to be in a low-power charging mode, and when the mobile power supply is in the low-power charging mode, the charging power required by the mobile power supply is lower than the rated charging power of the mobile power supply; and
when the input voltage detected by the charging and discharging management unit is greater than or equal to the first critical voltage, the charging and discharging management unit controls the mobile power supply to be in a high-power charging mode, and when the mobile power supply is in the high-power charging mode, the charging power required by the mobile power supply is the rated charging power of the mobile power supply.
When the mobile power supply is connected with external power supply for charging, the charging and discharging management unit detects the input voltage of the first interface, and controls the mobile power supply to be in a high-power charging mode or a low-power charging mode according to the detected input voltage. When the mobile power supply and the mobile phone are charged by the same adapter, the charging and discharging management unit of the mobile power supply detects the input voltage of the first interface, the adapter needs to supply power to the mobile power supply and the mobile phone at the same time, so that the voltage output to the mobile power supply is lower than that when the adapter only supplies power to the mobile power supply, the input voltage of the first interface detected by the charging and discharging management unit is lower than a first critical voltage, the charging and discharging management unit controls the mobile power supply to be in a low-power charging mode, the charging power distributed to the mobile phone by the adapter is improved, and the mobile phone can be charged fully. Compared with the traditional mobile power supply, the mobile power supply has better user experience in use.
Drawings
Fig. 1 is a block diagram of a mobile power supply according to an embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be further described with reference to the accompanying drawings.
As shown in fig. 1, the mobile power supply 100 according to an embodiment includes a battery cell 10, a protection circuit 20, a voltage boosting module 30, a first interface 40, a second interface 50, a voltage reducing module 60, and a charge and discharge management unit 70.
The battery cell 10 may be a commercial battery of 3V to 4.2V. Preferably, the capacity of the battery cell 10 does not exceed 12000 mAh.
The protection circuit 20 is directly electrically connected to the battery cell 10, and any other module is electrically connected to the battery cell 10 through the protection circuit 20.
The protection circuit 20 provides protection at the last hardware level for the cell 10, which protection is typically active when software protection fails. Because the power circuit has some unstable factors, the protection circuit 20 is designed to prevent such unstable factors from affecting the circuit effect, and generally includes circuits such as overcurrent protection, overvoltage protection, overheat protection, no-load protection, and short-circuit protection.
Most of the commercial mobile power supplies are provided with the protection circuit 20. In some embodiments, however, the protection circuit 20 may be omitted, and the protection of the battery cell 10 is implemented by software protection.
Since the voltage of the battery cell 10 is 3V to 4.2V, and the charging voltage of most of the electronic devices is at least 5V at present, the voltage boosting module 30 needs to be arranged to achieve the voltage boosting.
The voltage boosting module 30 is typically a voltage boosting circuit, and is configured to boost the voltage of the battery cell 10.
In this embodiment, the input end of the voltage boosting module 30 is electrically connected to the output end of the battery cell 10, and the voltage boosting module 30 is configured to boost the voltage of the battery cell 10 to 5V to 5.6V. In other embodiments, the voltage boosting module 30 may also be configured to boost the voltage of the battery cell 10 to be higher.
The output end of the voltage boosting module 30 is electrically connected to a pin of the first interface 40, and the first interface 40 is used for connecting an electric device so that the electric core 10 charges the electric device through the voltage boosting module 30.
The booster module 30 is electrically connected to the charge and discharge management unit 70, and the booster module 30 is controlled by the charge and discharge management unit 70.
Preferably, in this embodiment, the output end of the voltage boosting module 30 is electrically connected to a pin of the second interface 50, and the second interface 50 is also used for connecting an electric device, so that the electric core 10 charges the electric device through the voltage boosting module 30.
By providing a plurality of output interfaces (the first interface 40 and the second interface 50), the mobile power supply 100 can simultaneously charge a plurality of electronic devices.
The second interface 50 is preferably a USB-a interface in consideration of the adaptability, and the number of the second interfaces 50 may be 1, 2, 3, etc.
The voltage step-down module 60 is typically a voltage step-down circuit for reducing the voltage of the battery cell 10.
In the present embodiment, the output end of the voltage reducing module 60 is electrically connected to the output end of the battery cell 10, and the voltage reducing module 60 is configured to reduce the voltage of the external power supply (adapter) to be substantially equal to the voltage of the battery cell 10 (3V to 4.2V).
The voltage-decreasing module 60 is electrically connected to the charge and discharge management unit 70, and the voltage-decreasing module 60 is controlled by the charge and discharge management unit 70.
Preferably, in this embodiment, the first interface 40 is a Type-C interface, and the first interface 40 supports bidirectional input and output.
In this embodiment, the input end of the voltage-reducing module 60 is electrically connected to the pin of the first interface 40, the output end of the voltage-reducing module 60 is electrically connected to the battery cell 10, and the first interface 40 is further configured to connect an external power supply so that the external power supply charges the battery cell 10 through the voltage-reducing module 60.
In other embodiments, the first interface 40 may be an output-only interface, such as a USB-a interface. In this embodiment, the mobile power supply 100 further includes an input interface, an input end of the voltage-reducing module 60 is electrically connected to a pin of the input interface, an output end of the voltage-reducing module 60 is electrically connected to the battery cell 10, and the input interface is used for connecting an external power supply so that the external power supply charges the battery cell 10 through the voltage-reducing module 60.
The charge and discharge management unit 70 is used to manage the voltage boosting module 30 and the voltage dropping module 60.
Referring to fig. 1, the charge and discharge management unit 70 is electrically connected to the first interface 40 to detect an input voltage of the first interface 40.
After the external power supply (adapter) is electrically connected to the first interface 40 of the mobile power supply 100, when the input voltage detected by the charge and discharge management unit 70 is less than the first critical voltage, the charge and discharge management unit 70 controls the mobile power supply 100 to be in the low power charging mode.
After the external power supply (adapter) is electrically connected to the first interface 40 of the mobile power supply 100, when the input voltage detected by the charge and discharge management unit 70 is greater than or equal to the first critical voltage, the charge and discharge management unit 70 controls the mobile power supply 100 to be in the high power charging mode.
When the mobile power supply 100 is in the low-power charging mode, the charging power required by the mobile power supply 100 is lower than the rated charging power of the mobile power supply 100; when the mobile power supply 100 is in the high power charging mode, the charging power required by the mobile power supply 100 is the rated charging power of the mobile power supply 100.
When the external power supply is only supplying power to the mobile power supply 100, the input voltage detected by the charge and discharge management unit 70 at this time is greater than or equal to the first threshold voltage.
When the external power supply uses the rated charging power of the mobile power supply 100 to supply power to the mobile power supply 100, the first threshold voltage is less than or equal to the input voltage detected by the charging and discharging management unit 70 at this time.
The first threshold voltage is set mainly in consideration of the rated output voltage and the line loss of the adapter. When the adapter is fully loaded to supply power to the mobile power supply 100, the charging and discharging management unit 70 detects that the input voltage of the first interface 40 is the maximum charging voltage that the mobile power supply 100 can obtain from the adapter, and the input voltage is the upper limit value of the first critical voltage. Thus, it is ensured that when the mobile power supply 100 is powered by the full load of the adapter, the charge and discharge management unit 70 controls the mobile power supply 100 to be in the high power charging mode.
When the adapter needs to supply power to a plurality of electric devices at the same time, it is necessary to enable the charging and discharging management unit 70 to detect that the input voltage of the first interface 40 is lower than the first threshold voltage. Accordingly, the charge and discharge management unit 70 controls the mobile power supply 100 to be in the low power charging mode so as to charge the other charging devices as soon as possible.
Generally, the input voltage of the first interface 40 detected by the charge/discharge management unit 70 is the output voltage of the adapter minus the line loss.
Taking an adapter with 5V output as an example, if the line loss is 0.2V, the output voltage of the full load output of the adapter is 5V, and the voltage reaching the first interface 40 of the mobile power supply 100 is 4.8V.
There may be a 5% error in view of the rated output voltage of the adapter. Preferably, the first threshold voltage is 4.7V to 5.1V. Specifically, the first threshold voltage may be 4.7V, 4.75V, 4.8V, 4.85V,. logue, 5.05V, or 5.1V.
Preferably, in the low-power charging mode, a ratio of a charging power required by the mobile power supply 100 to a rated charging power of the mobile power supply 100 is 0.35-0.6: 1.
preferably, the rated charging power of mobile power supply 100 is 8.4W to 12.72W.
Considering that the dual-port adapter outputs 5V in most cases, the rated charging voltage of the mobile power supply 100 is preferably 4.7V to 5.3V. Specifically, the rated charging voltage of the mobile power supply 100 may be 4.7V, 4.75V, 4.8V, 4.85V,. logarithms, 5.25V, or 5.3V.
Preferably, in the low power charging mode, the charging power required by the mobile power supply 100 is 4W to 7.5W. Specifically, in the low power charging mode, the charging power required by the mobile power supply 100 may be 4W, 4.25W, 4.5W.
When the external power supply is connected for charging, the charging and discharging management unit 70 of the mobile power supply 100 detects the input voltage of the first interface 40, and the charging and discharging management unit 70 controls the mobile power supply 100 to be in the high power charging mode or the low power charging mode according to the detected magnitude of the input voltage. When the mobile power supply 100 and the mobile phone are charged by using the same adapter, the charging and discharging management unit 70 of the mobile power supply 100 detects the input voltage of the first interface 40, because the adapter needs to supply power to the mobile power supply 100 and the mobile phone at the same time, the voltage directly output to the mobile power supply 100 is obviously lower than that when the adapter is full power to supply power to the mobile power supply 100, and the input voltage of the first interface 40 detected by the charging and discharging management unit 70 is lower than a first critical voltage, so that the charging and discharging management unit 70 controls the mobile power supply 100 to be in a low-power charging mode, thereby improving the charging power distributed by the adapter to the mobile phone, and enabling the mobile phone to be charged fully. The user experience of such a mobile power supply 100 is better when used than a conventional mobile power supply.
In addition, the traditional mobile power supply does not have a reasonable charging scheme, especially when the adapter with multiple output interfaces is used for charging the mobile power supply and other electronic equipment, after the other electronic equipment is fully charged, the adapter cannot increase the charging current and the charging voltage of the mobile power supply, and therefore the mobile power supply is in an unintelligent state during charging.
The mobile power supply 100 detects the input voltage of the first interface 40 through the charge and discharge management unit 70, and when the other electronic devices are fully charged, the charge and discharge management unit 70 detects that the input voltage is greater than or equal to the first threshold voltage, so as to control the mobile power supply 100 to enter a high-power charging mode, and thus the charging of the mobile power supply 100 is more intelligent.
Preferably, when the charge and discharge management unit 70 detects that the input voltage increases from being less than the first threshold voltage to being greater than or equal to the first threshold voltage, the charge and discharge management unit 70 controls the mobile power supply 100 to be in the low power charging mode, after Δ t, the charge and discharge management unit 70 compares the relationship between the input voltage detected at this time and the first threshold voltage again, if the input voltage detected at this time is less than the first threshold voltage, the charge and discharge management unit 70 controls the mobile power supply 100 to be in the low power charging mode, and if the input voltage detected at this time is greater than or equal to the first threshold voltage, the charge and discharge management unit 70 controls the mobile power supply 100 to be changed from the low power charging mode to the high power charging mode.
Wherein Δ t is 10s to 600 s.
Specifically, Δ t is 30s, 40s, 50s, 60s,. logarithms, 170s, or 180 s.
In the above scheme, the operation of the delay determination is added when the mobile power supply 100 is changed from the low-power charging mode to the high-power charging mode, and the operation of the delay determination can avoid the erroneous determination.
When the input voltage detected by the charge and discharge management unit 70 is less than the first threshold voltage, the charge and discharge management unit 70 controls the operation of the mobile power supply 100 in the low power charging mode to:
setting a second critical voltage, wherein the second critical voltage is smaller than the first critical voltage;
when the input voltage detected by the charge and discharge management unit 70 is greater than the second critical voltage and the input voltage is less than the first critical voltage, the charge and discharge management unit 70 controls the mobile power supply 100 to be in the low power charging mode;
when the input voltage detected by the charge and discharge management unit 70 is less than the second critical voltage, the charge and discharge management unit 70 controls the mobile power supply 100 to be in the constant current charging mode;
when the mobile power supply 100 is in the constant current charging mode, the charge and discharge management unit 70 controls the input current of the external power supply to be not more than 0.6A.
More preferably, when portable power source 100 is in the constant current charging mode, charge/discharge management unit 70 controls the input current of the external power supply to be 0.1A, 0.15A, 0.2A, 0.25A, 0.5A, or 0.55A.
Preferably, the second threshold voltage is 4.2V to 4.65V.
Generally, when an electric device is charged by external power supply, the charging voltage obtained by an electric device end may be low due to insufficient external power supply load, and at this time, the device generally sends a demand to pull up an output current of the external power supply in order to obtain higher charging power, and as the current increases, the resistance also increases, and the charging voltage obtained by the electric device end is lower, so that the electric device continues to pull up the output current, and if the external power supply is not controlled, the current is likely to be too large, and the external power supply is pulled up.
In the above scheme, when the charging and discharging management unit 70 detects that the charging voltage obtained at the first interface 40 is less than the second critical voltage, the input current of the external power supply is limited, so that the external power supply is prevented from being dead due to excessive current, the charging safety is improved, and the user experience is enhanced.
The invention also discloses a charging method of the mobile power supply using the mobile power supply 100, which comprises the following steps:
the external power supply is electrically connected with the first interface of the mobile power supply 100;
the charge and discharge management unit 70 detects an input voltage of the first interface 40;
when the input voltage detected by the charging and discharging management unit 70 is less than the first critical voltage, the charging and discharging management unit 70 controls the mobile power supply 100 to be in the low-power charging mode, and when the mobile power supply 100 is in the low-power charging mode, the charging power required by the mobile power supply 100 is lower than the rated charging power of the mobile power supply 100; and
when the input voltage detected by the charging and discharging management unit 70 is greater than or equal to the first threshold voltage, the charging and discharging management unit 70 controls the mobile power supply 100 to be in the high-power charging mode, and when the mobile power supply 100 is in the high-power charging mode, the charging power required by the mobile power supply 100 is the rated charging power of the mobile power supply 100.
When the external power supply uses the rated charging power of the mobile power supply to supply power to the mobile power supply 100, the first threshold voltage is less than or equal to the input voltage detected by the charging and discharging management unit 70.
The above embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A mobile power supply, comprising;
an electric core;
the output end of the voltage reduction module is electrically connected with the battery cell;
the input end of the voltage reduction module is electrically connected with a pin of the first interface, and the first interface is used for connecting external power supply so that the external power supply charges the battery cell through the voltage reduction module; and
a charge/discharge management unit is characterized in that,
the charging and discharging management unit is electrically connected with the first interface to detect the input voltage of the first interface;
when the input voltage detected by the charging and discharging management unit is smaller than a first critical voltage, the charging and discharging management unit controls the mobile power supply to be in a low-power charging mode;
when the input voltage detected by the charging and discharging management unit is greater than or equal to the first critical voltage, the charging and discharging management unit controls the mobile power supply to be in a high-power charging mode;
when the mobile power supply is in a low-power charging mode, the charging power required by the mobile power supply is lower than the rated charging power of the mobile power supply; when the mobile power supply is in a high-power charging mode, the charging power required by the mobile power supply is the rated charging power of the mobile power supply.
2. The mobile power supply according to claim 1, wherein the first threshold voltage is 4.7V to 5.1V;
in the low-power charging mode, the ratio of the charging power required by the mobile power supply to the rated charging power of the mobile power supply is 0.35-0.6: 1.
3. the mobile power supply according to claim 1, wherein the rated charging power of the mobile power supply is 8.4W-12.72W, and the rated charging voltage of the mobile power supply is 4.7V-5.3V;
in the low-power charging mode, the charging power required by the mobile power supply is 4W-7.5W.
4. The mobile power supply according to claim 1, wherein when the charging and discharging management unit detects that the input voltage increases from less than the first threshold voltage to greater than or equal to the first threshold voltage, the charge and discharge management unit firstly controls the mobile power supply to be in a low-power charging mode and after delta t, the charge and discharge management unit compares the relationship between the input voltage detected at this time and the first threshold voltage again, and if the input voltage detected at this time is less than the first threshold voltage, the charging and discharging management unit controls the mobile power supply to be in a low power charging mode, if the detected input voltage is greater than or equal to the first threshold voltage, the charging and discharging management unit controls the mobile power supply to change from a low-power charging mode to a high-power charging mode;
wherein the delta t is 10 s-600 s.
5. The mobile power supply according to claim 4, wherein Δ t is 30s, 40s, 50s, 60s,. logarithms, 170s, or 180 s.
6. The mobile power supply according to claim 1, wherein when the input voltage detected by the charging and discharging management unit is less than a first threshold voltage, the charging and discharging management unit controls the operation of the mobile power supply in a low power charging mode to:
setting a second threshold voltage, wherein the second threshold voltage is smaller than the first threshold voltage;
when the input voltage detected by the charging and discharging management unit is greater than the second critical voltage and the input voltage is less than the first critical voltage, the charging and discharging management unit controls the mobile power supply to be in a low-power charging mode;
when the input voltage detected by the charging and discharging management unit is smaller than the second critical voltage, the charging and discharging management unit controls the mobile power supply to be in a constant current charging mode;
when the mobile power supply is in a constant current charging mode, the charging and discharging management unit controls the input current of the external power supply to be not more than 0.6A.
7. The mobile power supply according to claim 6, wherein when the mobile power supply is in a constant current charging mode, the charge and discharge management unit controls an input current of the external power supply to be 0.1A, 0.15A, 0.2A, 0.25A,... An, 0.5A or 0.55A;
the second critical voltage is 4.2V-4.65V.
8. The mobile power supply according to any one of claims 1 to 7, wherein the first interface is a Type-C interface, the first interface supports bidirectional input and output, and the mobile power supply further comprises a boost module;
the output end of the boosting module is electrically connected with the pin of the first interface, the input end of the boosting module is electrically connected with the output end of the battery cell, and the first interface is further used for connecting an electric device so that the battery cell charges the electric device through the boosting module.
9. The mobile power supply according to any one of claims 1 to 7, wherein the mobile power supply further comprises a second interface and a boost module, wherein the second interface is a USB-A interface;
the output end of the boosting module is electrically connected with the pin of the second interface, the input end of the boosting module is electrically connected with the output end of the battery cell, and the second interface is used for connecting electric equipment so that the battery cell charges the electric equipment through the boosting module.
10. A method for charging a mobile power supply using the mobile power supply according to any one of claims 1 to 9, comprising:
the external power supply is electrically connected with the first interface of the mobile power supply;
the charge and discharge management unit detects the input voltage of the first interface;
when the input voltage detected by the charging and discharging management unit is smaller than a first critical voltage, the charging and discharging management unit controls the mobile power supply to be in a low-power charging mode, and when the mobile power supply is in the low-power charging mode, the charging power required by the mobile power supply is lower than the rated charging power of the mobile power supply; and
when the input voltage detected by the charging and discharging management unit is greater than or equal to the first critical voltage, the charging and discharging management unit controls the mobile power supply to be in a high-power charging mode, and when the mobile power supply is in the high-power charging mode, the charging power required by the mobile power supply is the rated charging power of the mobile power supply.
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| CN201811253200.2A CN111106633A (en) | 2018-10-25 | 2018-10-25 | Mobile power supply and charging method thereof |
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| CN201811253200.2A CN111106633A (en) | 2018-10-25 | 2018-10-25 | Mobile power supply and charging method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116699296A (en) * | 2023-08-08 | 2023-09-05 | 辰芯半导体（深圳）有限公司 | Load detection circuit and electronic device |
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2018
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116699296A (en) * | 2023-08-08 | 2023-09-05 | 辰芯半导体（深圳）有限公司 | Load detection circuit and electronic device |
| CN116699296B (en) * | 2023-08-08 | 2023-10-31 | 辰芯半导体（深圳）有限公司 | Load detection circuit and electronic device |
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Application publication date: 20200505 |