CN210608619U - Quick charging portable power source and adapter - Google Patents
Quick charging portable power source and adapter Download PDFInfo
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- CN210608619U CN210608619U CN201921771663.8U CN201921771663U CN210608619U CN 210608619 U CN210608619 U CN 210608619U CN 201921771663 U CN201921771663 U CN 201921771663U CN 210608619 U CN210608619 U CN 210608619U
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Abstract
The utility model discloses a quick charge portable power source, include: the direct current charging interface is connected with the input of an external power supply; and the charging management unit is used for switching the constant-current charging stage and the constant-voltage charging stage according to the corresponding charging duration of the battery cell under different voltages. Further, the charging management unit adopts constant current charging at the initial charging stage; and when the mobile power supply reaches a voltage cut-off threshold value in the constant current charging stage, converting the mobile power supply into constant voltage charging until the mobile power supply is fully charged. The problem that charging is finished earlier and is not fully charged in practice in the process of large-current charging can be effectively solved. And because the output port of this portable power source adopts two-way USB Type-C port to support and just inserts so can carry out quick charge to the control unit can discern multiple quick protocol of filling, adopts constant current constant voltage charging mode, has solved the electric core and can not be full of completely under the heavy current charging condition just to finish the technical problem who charges, and has reached quick charge's technical effect.
Description
Technical Field
The utility model relates to a battery charging outfit especially relates to a quick charge portable power source and corresponding adapter that charges.
Background
The portable power source is a portable charger integrating power supply and charging, wherein the portable power source can provide electric energy for charging electronic products such as mobile phones and tablet computers at any time, and the portable power source is extremely wide in application based on the convenience of charging the digital equipment. In the actual working process, when the power of the mobile power supply is short of electricity, the mobile power supply can be connected with the power adapter to supplement electric energy. However, the mobile power supply in the prior art mainly uses 2A or less than 2A to charge the battery cell, and if the battery cell is 10000mAh, the full charge takes 5-6 hours.
In the process of large-current charging, the charging is ended earlier, so that the phenomenon that the electric quantity of an actual battery cell is not fully charged can occur. And the port utilization ratio of the mobile power supply is not high, the charging port can only charge but can not discharge, the discharging current is below 2A, and most of the mobile power supplies cannot charge the notebook computer due to insufficient output power and limited electrical property of the output interface. And because mobile terminal equipment fills agreement numerous soon, current mainstream portable power source only supports some protocols that fill soon. The input power of the existing mobile power supply charging adapter is small, the mainstream adapter is 18W/45W, and multi-output is not supported.
SUMMERY OF THE UTILITY MODEL
Problem to prior art existence, the utility model discloses a quick charge portable power source, include:
the direct current charging interface is connected with the input of an external power supply;
and the charging management unit is used for switching the constant-current charging stage and the constant-voltage charging stage according to the corresponding charging duration of the battery cell under different voltages.
As an optional implementation manner, in an initial charging stage, the charging management unit adopts constant current charging; and when the voltage of the mobile power supply reaches a cut-off threshold value in the constant-current charging process, converting the mobile power supply into constant-voltage charging until the mobile power supply is fully charged.
As an optional embodiment, during the constant current charging, the charging management unit controls the charging current not to exceed a current threshold set by the current.
As an optional implementation manner, the charging protection unit adjusts the heat dissipation of internal circuit components of the mobile power supply and regulates and controls the temperature of the battery cell of the mobile power supply in a charging state.
As an optional embodiment, the charge protection circuit includes at least:
the power supply comprises a switching power MOS tube, a current sensor, a buck-boost MOS tube and a power inductor;
in the charging process, charging current enters a current main path through a switching power MOS tube, passes through a current sensor, a voltage boosting and reducing MOS tube and a power inductor, and then reaches the anode of the battery pack after passing through a battery end current sensor, so that the large-current charging process of the battery pack is completed.
As an optional implementation, the mobile power supply further includes:
the terminal equipment charging system comprises a port connected with terminal equipment to be charged, wherein the port is a bidirectional USB Type-C port, and the bidirectional USBType-C port supports output and input.
As an alternative embodiment, a control unit connected to the output port.
As an optional implementation manner, the control unit performs attribute identification on the terminal device to select a corresponding charging protocol and adjust the output voltage and the output current of the mobile power supply.
As an optional implementation manner, the control unit may identify at least an android QC4.0 and compatible fast charging protocol, an apple2.4A and compatible fast charging protocol, and an FCP fast charging protocol.
The utility model provides a quick charge portable power source adapter is connected with the power and charges for the equipment that waits to charge which characterized in that includes: the power adapter comprises a fast charging portable power supply as described above.
Since the technical scheme is used, the utility model provides a pair of quick charge portable power source and adapter that charges can effectively solve the in-process that the heavy current charges, finishes earlier charging, and the problem that actually is not full of, consequently the electric quantity that can appear actual electric core does not have the phenomenon of being full of. And because the output port of this portable power source adopts two-way USB Type-C port to support and just inserts consequently can carry out quick charge to control unit can discern QC4.0 fast protocol of filling, APPLE2.4A and hua be FCP fast protocol of filling, consequently this portable power source can charge for multiple equipment, adopts the constant current constant voltage charging mode in the charging process, has solved the electric core and can not be full of completely under the heavy current charging condition and just finished the technical problem of charging, and has reached the technological effect of quick charge.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present application, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic circuit diagram of the fast charging mobile power supply of the present invention;
fig. 2 is a schematic diagram of a circuit structure of the power adapter of the present invention;
fig. 3 is a schematic circuit diagram of a charging protection circuit according to an embodiment of the present invention;
fig. 4 is a schematic circuit diagram of a charging protection circuit according to an embodiment of the present invention;
fig. 5 is a schematic circuit diagram of a fast charging identification circuit according to an embodiment of the present invention;
fig. 6 is a schematic circuit diagram of a main control chip of the quick charge identification circuit in the embodiment of the present invention;
fig. 7 is a schematic diagram of the operation of the charging management unit in the embodiment of the present invention.
Detailed Description
For making the technical solution and the advantages of the present invention clearer, the following combines the drawings in the embodiments of the present invention, to the technical solution in the embodiments of the present invention is clear and complete description:
a fast charging mobile power supply as shown in fig. 1, comprising: the charging system comprises a direct current charging interface, a charging protection circuit, a charging management unit and a control unit, wherein the direct current charging interface is connected with a power supply end by using a direct current DC interface and receives electric energy output by the power supply end to carry out large-current charging. Because the temperature of the internal circuit structure of the mobile power supply is increased in the charging process, the charging protection circuit is composed of high-voltage-resistant and low-internal-resistance devices, heat is dissipated in the charging process, and the temperature of the battery cell is regulated and controlled to ensure that the temperature of the battery cell works in a safe range. The specific working principle is that in order to realize the safe and reliable charging of the battery cell by large current in a constant current charging stage, software control parameters are calculated through a large number of experiments, and the average charging time of the battery cell under various voltage values is calculated to charge the battery cell voltage to a voltage cut-off threshold value, so that a high-efficiency quick charging result is achieved. When the mobile power supply charges the terminal equipment to be charged, the control unit firstly judges the attribute of the terminal equipment, then selects a corresponding charging protocol and adjusts the numerical values of the output voltage and the output current of the mobile power supply so as to carry out the discharging process of the mobile power supply.
One port of the mobile power supply can complete bidirectional transmission, can be charged and discharged, supports the mainstream quick charging protocol in the market, can provide quick charging for a plurality of mobile terminals, has the highest output power of 60W, and can meet the charging requirement of a notebook computer. The direct-current charging interface adopts a 10A5.5-2.5mm interface, the width of a surface layer large-current wiring is 196mil, the wiring of a charging path is in a shape like a Chinese character ji, the total length is 30mm, and a maximum passing power supply 15A is designed (considering the practical application scene, the circuit temperature can be greatly increased along with the increase of the voltage value, so that the practical electrifying current can be preferably 8A). The charging protection circuit at least comprises a switching power MOS tube, a current sensor, a buck-boost MOS tube and a power inductor, wherein the switching power MOS tube, the power inductor and the current sensor are placed at the end of the mobile power supply and are far away from the battery cell, so that in the large-current charging process, heat is dispersed, and the temperature of the battery cell is controlled within a safe working range.
As shown in fig. 3 and 4, a large current passes through the DC port ACIN, passes through the inlet MOS transistor Q6 and the MOS transistor Q9, and then enters the main current path VBUS, and then passes through the current sensor R31, the buck-boost MOS transistor Q1 and the power inductor L1, and then passes through the battery-end current sensor R32 to reach the battery pack anode B4, thereby completing a large-current charging process for the battery pack.
Furthermore, the output port uses a bidirectional USB Type-C port, the port supports a positive and negative insertion mode, and the port is an output port and an input port. When charging the mobile device, the management chip of the Type-C port on the PCB is the control unit which identifies the power supply requirement of the terminal device, confirms the used quick charging protocol, and then the control unit adjusts the output voltage and the output current value of the mobile power supply to realize the quick charging of the terminal device. The utility model discloses use 22mil top layers of double-circuit to walk the line on circuit design, support the highest 6A electric current (the actual electric current demand that fills soon is 3A).
Further, as shown in fig. 5 and fig. 6, the schematic diagram of the control unit is that a port J2 is a bidirectional USB Type-C port, and is connected to a main control chip U1 with a model of CYPD3171 through D + D-, and a pin D + is connected to a resistor with a resistance value of 5.1K, so as to implement functions of a pull-up circuit and a pull-down resistor. The main control chip U can recognize QC4.0 fast charging protocol, APPLE2.4A and Huawei FCP fast charging protocol.
Further, to the concrete design of the management unit that charges, carry out constant current and constant voltage control to the charging process when charging according to electric core under different voltage value, charging current and electric core voltage are shown as figure 7 with the relation of time variation, the utility model discloses use 4 sections 18650 electric cores end to end, each section electric core nominal voltage 4.2V, the link of charging divide into two stages of constant current and constant voltage, when constant current charges to 16.4V, truns into constant voltage charging to, and voltage is 16.8V and stops when being full of until.
In order to protect the battery cell from being damaged by high-voltage charging, the voltage of large-current charging cannot be higher than 16.4V, so that the charging voltage needs to be monitored in real time during the whole charging process, and meanwhile, the charging current needs to be large enough. Therefore the utility model discloses a south core SC8815 buck-boost control chip, this chip charge cut to the condition for charging current is less than maximum charging current 1/10 and when cell voltage is greater than 16.4V, judge to charge and cut to.
In order to ensure the efficiency of rapid charging, the maximum charging current needs to be adjusted to be less than 2A before the cell voltage reaches 16.4V. In the large-current charging process, the accurate voltage value of the battery cell is read, and the accurate voltage value can be read only by stopping the charging process, so that the charging efficiency is influenced. Through repeated tests of the actual circuit, when the empty cell group is charged to 16.4V, 1350 seconds are required on average. In the aspect of charging in the software control constant current stage, the following mode is adopted in the invention, and the relationship between the current voltage value V and the constant current time T of the 4 electricity-saving core is as follows: t (sec) — (16.4-V (volts)). times. 1000/4. Because the circuit receives the influence of temperature rising, the too high temperature of electric core will lead to the excess temperature detection circuit to turn off the charging path promptly, wherein the utility model discloses the biggest charging current is established to 8A.
The utility model discloses a whole charging process is controlled to the time of control constant current charging. The problem of the electric core can not be fully filled with under the heavy current charging condition just finish charging is solved.
For a 10000mAh mobile power supply (4 strings of 186504.2V cells), the time from 12V (discharge cut-off to voltage 3.0V) to full charge of 16.8V is 35 minutes. The bidirectional USB Type-C port can support maximum 3A charging and discharging, the output voltage is up to 20V, and the output power is 60W at most.
To sum up, the utility model discloses a portable power source can carry out powerful charging under selecting suitable fast protocol of filling, has shortened the charge time.
Further, the utility model discloses in, a quick charge portable power source adapter still is provided, can charge for the equipment of treating that is connected with the power to, this adapter includes as before quick charge portable power source.
Since the technical scheme is used, the utility model provides a pair of quick charge portable power source and adapter that charges can effectively solve the in-process that the heavy current charges, finishes earlier charging, and the problem that actually is not full of, consequently the electric quantity that can appear actual electric core does not have the phenomenon of being full of. And because the output port of this portable power source adopts two-way USB Type-C port to support and just inserts consequently can carry out quick charge to control unit can discern QC4.0 fast protocol of filling, APPLE2.4A and hua be FCP fast protocol of filling, consequently this portable power source can charge for multiple equipment, adopts the constant current constant voltage charging mode in the charging process, has solved the electric core and can not be full of completely under the heavy current charging condition and just finished the technical problem of charging, and has reached the technological effect of quick charge.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (10)
1. A fast charging portable power source characterized by comprising:
the direct current charging interface is connected with the input of an external power supply;
and the charging management unit is used for switching the constant-current charging stage and the constant-voltage charging stage according to the corresponding charging duration of the battery cell under different voltages.
2. The portable power source for rapid charging according to claim 1, wherein in an initial charging stage, the charging management unit employs constant current charging; and when the voltage of the mobile power supply reaches a cut-off threshold value in the constant-current charging process, converting the mobile power supply into constant-voltage charging until the mobile power supply is fully charged.
3. The fast charging mobile power supply according to claim 2, wherein during the constant current charging, the charging management unit controls the charging current not to exceed a current threshold set by the current.
4. The rapid charging mobile power supply according to claim 1, further characterized in that the mobile power supply further comprises a charging protection unit, and in a charging state, the heat dissipation of internal circuit components of the mobile power supply is adjusted, and the battery cell temperature of the mobile power supply is regulated.
5. The fast charging mobile power supply according to claim 4, wherein the charge protection circuit comprises at least:
the power supply comprises a switching power MOS tube, a current sensor, a buck-boost MOS tube and a power inductor;
in the charging process, charging current enters a current main path through a switching power MOS tube, passes through a current sensor, a voltage boosting and reducing MOS tube and a power inductor, and then reaches the anode of the battery pack after passing through a battery end current sensor, so that the large-current charging process of the battery pack is completed.
6. The fast charging mobile power supply of claim 1, further comprising:
the terminal equipment charging system comprises a port connected with terminal equipment to be charged, wherein the port is a bidirectional USB Type-C port, and the bidirectional USBType-C port supports output and input.
7. The fast charging mobile power supply of claim 6, further characterized in that said mobile power supply further comprises a control unit connected to an output port.
8. The fast charging mobile power supply according to claim 7, wherein the control unit performs attribute identification on the terminal device to select a corresponding charging protocol and adjust the output voltage and the output current of the mobile power supply.
9. The fast charging portable power source of claim 8, further characterized in that said control unit is capable of recognizing at least android QC4.0 and compatible fast charging protocol, apple2.4A and compatible fast charging protocol, and FCP fast charging protocol.
10. The utility model provides a quick charge portable power source adapter is connected with the power and charges for the equipment that waits to charge which characterized in that includes: the power adapter comprises a fast charging mobile power supply as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921771663.8U CN210608619U (en) | 2019-10-21 | 2019-10-21 | Quick charging portable power source and adapter |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921771663.8U CN210608619U (en) | 2019-10-21 | 2019-10-21 | Quick charging portable power source and adapter |
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| CN210608619U true CN210608619U (en) | 2020-05-22 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111864868A (en) * | 2020-09-22 | 2020-10-30 | 深圳英集芯科技有限公司 | Quick-charging charger, quick-charging chip and control method of quick-charging charger |
-
2019
- 2019-10-21 CN CN201921771663.8U patent/CN210608619U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111864868A (en) * | 2020-09-22 | 2020-10-30 | 深圳英集芯科技有限公司 | Quick-charging charger, quick-charging chip and control method of quick-charging charger |
| CN111864868B (en) * | 2020-09-22 | 2021-01-05 | 深圳英集芯科技有限公司 | Quick-charging charger, quick-charging chip and control method of quick-charging charger |
| CN114256906A (en) * | 2020-09-22 | 2022-03-29 | 深圳英集芯科技股份有限公司 | Control method of quick-charging charger |
| CN114256943A (en) * | 2020-09-22 | 2022-03-29 | 深圳英集芯科技股份有限公司 | Charger and chip fill soon |
| CN114256943B (en) * | 2020-09-22 | 2024-02-09 | 深圳英集芯科技股份有限公司 | Quick charging charger and quick charging chip |
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Address after: Room 1202, Building 1, Dongjiu Innovation Technology Park Phase 1, No. 76 Bulan Road, Xialilang Community, Nanwan Street, Longgang District, Shenzhen City, Guangdong Province, 518172 Patentee after: SHENZHEN OPTICS VALLEY TECHNOLOGY Co.,Ltd. Address before: Room 301, 3rd Floor, Building 41, Dayun Software Town, No. 8288 Longgang Avenue, Yuanshan Street, Longgang District, Shenzhen City, Guangdong Province, 518172 Patentee before: SHENZHEN OPTICS VALLEY TECHNOLOGY Co.,Ltd. |
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