CN211579639U - Wireless charging circuit and wireless charger - Google Patents
Wireless charging circuit and wireless charger Download PDFInfo
- Publication number
- CN211579639U CN211579639U CN201922498450.9U CN201922498450U CN211579639U CN 211579639 U CN211579639 U CN 211579639U CN 201922498450 U CN201922498450 U CN 201922498450U CN 211579639 U CN211579639 U CN 211579639U
- Authority
- CN
- China
- Prior art keywords
- circuit
- capacitor
- coil
- port
- input
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model provides a wireless charging circuit and wireless charger, include: a DC input circuit for inputting an external current; the DC-DC converter comprises two or more than two coil circuits and two or more than two DC-DC conversion circuits, wherein the input end of each DC-DC conversion circuit is respectively connected with a DC input circuit, and the output end of each DC-DC conversion circuit is correspondingly connected with the coil circuits one by one and used for outputting current input by the DC input circuit to the corresponding coil circuits after voltage regulation and conversion; the power supply circuit further comprises an MCU circuit capable of distributing power to each coil circuit, the MCU circuit comprises an MCU unit (U3), the MCU unit (U3) is electrically connected with each DC-DC conversion circuit and each coil circuit respectively, and the D + and D-ports of the MCU unit (U3) collect power signals of each coil circuit respectively to identify power required by a load. Therefore, automatic power distribution of the MCU unit (U3) is achieved, and the problem that multi-coil wireless charging cannot be performed quickly in the prior art is solved.
Description
Technical Field
The utility model belongs to the charger field, concretely relates to wireless charging circuit and wireless charger.
Background
Due to social development, the rhythm of life becomes fast, and quick charging becomes a necessary charging means in life.
However, currently, when a plurality of loads are connected to a plurality of vehicle-mounted chargers for charging and outputting, the voltage of each port is reduced to 5V for charging. The related technique of charger is filled to domestic wireless at present, and when the wireless charger of multicoil was exported simultaneously when inserting a plurality of loads, the multichannel was accomplished to the output and is filled soon, but this design has higher to the input adapter requirement, multiple adapter on the incompatible market:
when the multi-coil wireless charger outputs and works simultaneously, when the power of the used adapter is insufficient, the wireless charger cannot provide a quick charging function for equipment/loads, so that the charging speed of electric equipment is low, and the charging time is long.
SUMMERY OF THE UTILITY MODEL
The utility model provides a wireless charging circuit and wireless charger can effectively solve above-mentioned problem.
Specifically, the method comprises the following steps:
a DC input circuit for inputting an external current;
the DC-DC converter comprises two or more than two coil circuits and two or more than two DC-DC conversion circuits, wherein the input end of each DC-DC conversion circuit is respectively connected with a DC input circuit, and the output end of each DC-DC conversion circuit is correspondingly connected with the coil circuits one by one and used for outputting current input by the DC input circuit to the corresponding coil circuits after voltage regulation and conversion;
the power supply circuit further comprises an MCU circuit for distributing power to each coil circuit, the MCU circuit comprises an MCU unit (U3), the MCU unit (U3) is electrically connected with each DC-DC conversion circuit and each coil circuit respectively, and the D + and D-ports of the MCU unit (U3) collect power signals of each coil circuit respectively to identify power required by a load.
IN a specific embodiment, the DC-DC conversion circuit includes an EUP3271 chip, a first capacitor (C39) and a second capacitor (C40) are arranged between an IN port of the EUP3271 chip and a ground IN parallel, a first branch and a second branch are arranged between a COMP port of the EUP3271 chip and the ground IN parallel, the first branch is provided with a first resistor (R18) and a third capacitor (C34) IN series, the second branch is provided with a fourth capacitor (C31), a second resistor (R15) is arranged between a FREQ port of the EUP3271 chip and the ground, a fifth capacitor (C32) is arranged between a VDC port of the EUP3271 chip and the ground, a PGND port and a PGND port of the EUP3271 chip are respectively connected to the ground, a SW port of the EUP3271 chip is connected to one end of a first inductor (L1), and a sixth capacitor (C41) and GND are arranged between the other end of the first inductor (L1) and the ground IN parallel, The circuit comprises a seventh capacitor (C42) and an eighth capacitor (C3), wherein a third branch is arranged between the other end of the first inductor (L1) and the ground wire, the third branch comprises a ninth capacitor (C30) and a third resistor (R20) which are arranged in series, and a fourth resistor (R23) and a fifth resistor (R6) which are arranged in series are arranged between the FB port of the EUP3271 chip and the seventh capacitor (C42).
In a specific embodiment, a sixth resistor (R25) is arranged between the D +, D-port of the MCU unit (U3) and the corresponding coil circuit.
In a specific embodiment, the DC input circuit comprises an LDO power supply circuit for converting an external power supply into a 5V DC power output.
In a specific embodiment, the DC input circuit includes an input interface including a TYPE-A, TYPE-B or TYPE-C interface.
In a specific embodiment, the charging device further comprises an LED indicating circuit for indicating the charging state.
A wireless charger capable of automatically distributing power comprises the wireless charging circuit according to the previous embodiment.
Has the advantages that: the utility model discloses in, MCU unit (U3) and every way DC-DC converting circuit and every coil circuit be electric connection respectively, and the D +, the D-port of MCU unit (U3) gather every coil circuit's power signal respectively with the required power of discernment load, realize MCU unit (U3) to the automatic allocation of power, solved among the prior art the wireless problem that can not fill soon of charging of multicoil.
Drawings
Fig. 1 is a block diagram of the present invention.
Fig. 2 is a schematic diagram of the MCU circuit of the present invention.
Fig. 3 is a schematic diagram of the DC-DC conversion circuit according to the present invention.
Fig. 4 is a schematic diagram of the middle coil circuit of the present invention.
FIG. 5 is a schematic diagram of an LDO power supply circuit.
Detailed Description
The technical solution 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.
A wireless charging circuit, comprising:
a DC input circuit for inputting an external current;
the DC-DC converter comprises two or more than two coil circuits and two or more than two DC-DC conversion circuits, wherein the input end of each DC-DC conversion circuit is respectively connected with a DC input circuit, and the output end of each DC-DC conversion circuit is correspondingly connected with the coil circuits one by one and used for outputting current input by the DC input circuit to the corresponding coil circuits after voltage regulation and conversion;
the power supply circuit further comprises an MCU circuit for distributing power to each coil circuit, the MCU circuit comprises an MCU unit U3, the MCU unit U3 is electrically connected with each DC-DC conversion circuit and each coil circuit respectively, and the D + and D-ports of the MCU unit U3 collect power signals of each coil circuit respectively to identify power required by a load.
IN a specific embodiment, the DC-DC conversion circuit includes an EUP3271 chip, a first capacitor C39 and a second capacitor C40 which are connected IN parallel are disposed between an IN port of the EUP3271 chip and a ground, a first branch and a second branch which are connected IN parallel are disposed between a COMP port of the EUP3271 chip and the ground, a first resistor R18 and a third capacitor C34 which are connected IN series are disposed on the first branch, a fourth capacitor C31 is disposed on the second branch, a second resistor R15 is disposed between a FREQ port of the EUP3271 chip and the ground, a fifth capacitor C32 is disposed between a VDC port of the EUP3271 chip and the ground, a PGND port and a GND port of the EUP3271 chip are respectively connected to the ground, a SW port of the EUP3271 chip is connected to one end of a first inductor L1, a sixth capacitor C41, a seventh capacitor C4, an eighth capacitor C3, a third inductor branch 1 and a third inductor L1 which are connected IN parallel are disposed between the other end of the first inductor L1 and the ground, the third branch comprises a ninth capacitor C30 and a third resistor R20 which are arranged in series, and a fourth resistor R23 and a fifth resistor R6 which are arranged in series are arranged between the FB port of the EUP3271 chip and the seventh capacitor C42.
Based on the design, the embodiment provides a smart DC-DC conversion circuit, which isolates and isolates respective DC-DC conversion circuits when a plurality of wireless coils work simultaneously, thereby avoiding the mutual interference of multi-path charging. Moreover, the efficiency is high and the stability is good.
Preferably, a sixth resistor R25 is arranged between the D +, D-port of the MCU unit U3 and the corresponding coil circuit.
Preferably, the DC input circuit comprises an LDO power supply circuit for converting an external power supply into a 5V DC power output.
Preferably, the DC input circuit comprises an input interface comprising a TYPE-A, TYPE-B or TYPE-C interface.
Preferably, an LED indication circuit is further included for indicating the charging status. Specifically, the LED indication circuit is electrically connected to the MCU unit U3.
There is also provided a wireless charger for automatically distributing power, comprising a wireless charging circuit as described in the previous section of the embodiments.
The above description is only the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily change or replace the technical scope of the present invention. Therefore, the protection scope of the present invention is subject to the protection scope of the claims.
Claims (7)
1. A wireless charging circuit, characterized in that: the method comprises the following steps:
a DC input circuit for inputting an external current;
the DC-DC converter comprises two or more than two coil circuits and two or more than two DC-DC conversion circuits, wherein the input end of each DC-DC conversion circuit is respectively connected with a DC input circuit, and the output end of each DC-DC conversion circuit is correspondingly connected with the coil circuits one by one and used for outputting current input by the DC input circuit to the corresponding coil circuits after voltage regulation and conversion;
the power supply circuit further comprises an MCU circuit capable of distributing power to each coil circuit, the MCU circuit comprises an MCU unit (U3), the MCU unit (U3) is electrically connected with each DC-DC conversion circuit and each coil circuit respectively, and the D + and D-ports of the MCU unit (U3) collect power signals of each coil circuit respectively to identify power required by a load.
2. The wireless charging circuit of claim 1, wherein the DC-DC conversion circuit comprises an EUP3271 chip, a first capacitor (C39) and a second capacitor (C40) are arranged between an IN port and a ground of the EUP3271 chip IN parallel, a first branch and a second branch are arranged between a COMP port and the ground of the EUP3271 chip IN parallel, a first resistor (R18) and a third capacitor (C34) are arranged IN series on the first branch, a fourth capacitor (C31) is arranged on the second branch, a second resistor (R15) is arranged between a FREQ port and the ground of the EUP3271 chip, a fifth capacitor (C32) is arranged between a VDC port and the ground of the EUP3271 chip, a PGND port and a GND port of the EUP3271 chip are respectively connected to the ground, a SW port of the p3271 chip is connected to one end of a first inductor (L1), and a sixth capacitor (C41) is arranged between the other end of the first inductor (L1) and the ground IN parallel, The circuit comprises a seventh capacitor (C42) and an eighth capacitor (C3), wherein a third branch is arranged between the other end of the first inductor (L1) and the ground wire, the third branch comprises a ninth capacitor (C30) and a third resistor (R20) which are arranged in series, and a fourth resistor (R23) and a fifth resistor (R6) which are arranged in series are arranged between the FB port of the EUP3271 chip and the seventh capacitor (C42).
3. The wireless charging circuit according to claim 1, characterized in that a sixth resistor (R25) is provided between the D +, D-port of the MCU unit (U3) and the corresponding coil circuit.
4. The wireless charging circuit of claim 1, wherein the DC input circuit comprises an LDO power supply circuit for converting an external power source into a 5V DC power output.
5. The wireless charging circuit of claim 1, wherein the DC input circuit comprises an input interface comprising a TYPE-A, TYPE-B or TYPE-C interface.
6. The wireless charging circuit of claim 1, further comprising an LED indication circuit for indicating a charging status.
7. A wireless charger, characterized by: comprising a wireless charging circuit according to any of claims 1-6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922498450.9U CN211579639U (en) | 2019-12-31 | 2019-12-31 | Wireless charging circuit and wireless charger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922498450.9U CN211579639U (en) | 2019-12-31 | 2019-12-31 | Wireless charging circuit and wireless charger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211579639U true CN211579639U (en) | 2020-09-25 |
Family
ID=72553999
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922498450.9U Active CN211579639U (en) | 2019-12-31 | 2019-12-31 | Wireless charging circuit and wireless charger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211579639U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022077301A1 (en) * | 2020-10-15 | 2022-04-21 | 华为数字能源技术有限公司 | Transmitting terminal supporting wireless charging of multiple devices, charging base and system |
-
2019
- 2019-12-31 CN CN201922498450.9U patent/CN211579639U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022077301A1 (en) * | 2020-10-15 | 2022-04-21 | 华为数字能源技术有限公司 | Transmitting terminal supporting wireless charging of multiple devices, charging base and system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103891094B (en) | Battery system | |
| CN106787055B (en) | A kind of charging circuit, system, method and terminal | |
| CN106532889A (en) | Direct-current power system having parallel battery modules and method | |
| CN108233460B (en) | Charging method, charging device and terminal equipment | |
| CN205846782U (en) | A kind of intelligence transformation USB quick-charging circuit | |
| CN105098883A (en) | Charging system | |
| CN108233699A (en) | A kind of power management chip, electric power system and electronic equipment | |
| CN104967326B (en) | A kind of single line constant current turns constant pressure electrical energy conversion circuit | |
| WO2022133203A1 (en) | Portable power supply | |
| CN211579639U (en) | Wireless charging circuit and wireless charger | |
| CN106410914B (en) | It is distributed centralized power management system | |
| CN104184186A (en) | Automobile power supply management controller | |
| CN116707051B (en) | Dual-battery charge-discharge circuit, dual-battery charge-discharge method, electronic device and medium | |
| CN203119558U (en) | Intelligent power module of charger | |
| CN107415765B (en) | A kind of batteries of electric automobile charge/discharge balancing system | |
| CN215284439U (en) | Charging pile | |
| CN205407375U (en) | Charger | |
| CN204481696U (en) | A kind of power supply circuits of power collection systems | |
| CN204905974U (en) | Vehicle charger | |
| CN206481066U (en) | It is distributed centralized power management system | |
| CN210536489U (en) | Improved adapter circuit | |
| CN104967327B (en) | A kind of method of single line constant current/constant voltage electric energy conversion | |
| CN214378580U (en) | Battery parallel management device and system | |
| CN217892528U (en) | Direct current charging system for electric automobile | |
| CN110365070A (en) | A kind of charging circuit, electronic equipment and charging method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 518000 2nd floor, building B, Beisi intelligent park, 2008 Xuegang Road, Gangtou community, Bantian street, Longgang District, Shenzhen City, Guangdong Province Patentee after: Shenzhen Beisi Technology Co.,Ltd. Address before: 518000 room 505, building 3, Yunli intelligent park, No.5, middle Changfa Road, Yangmei community, Bantian street, Longgang District, Shenzhen City, Guangdong Province Patentee before: Shenzhen Beihang Technology Co.,Ltd. |
|
| CP03 | Change of name, title or address |