CN214798917U - Power adapter - Google Patents
Power adapter Download PDFInfo
- Publication number
- CN214798917U CN214798917U CN202120365922.8U CN202120365922U CN214798917U CN 214798917 U CN214798917 U CN 214798917U CN 202120365922 U CN202120365922 U CN 202120365922U CN 214798917 U CN214798917 U CN 214798917U
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- Prior art keywords
- circuit
- power supply
- supply conversion
- wireless charging
- conversion circuit
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- 238000006243 chemical reaction Methods 0.000 claims abstract description 57
- 238000001514 detection method Methods 0.000 claims abstract description 35
- 230000006698 induction Effects 0.000 claims abstract description 20
- 238000001914 filtration Methods 0.000 claims description 17
- 238000002955 isolation Methods 0.000 claims description 5
- 230000006978 adaptation Effects 0.000 abstract description 6
- 238000009499 grossing Methods 0.000 description 3
- 238000013459 approach Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000008094 contradictory effect Effects 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
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Abstract
The utility model discloses a power adapter, which comprises a wireless charging circuit, a wired charging circuit, a power supply conversion circuit, a detection circuit and an overcurrent protection circuit; the detection circuit is used for detecting the induction voltage of the wireless charging circuit and sending a first level signal to the power supply conversion circuit when the induction voltage reaches a preset voltage value; the power supply conversion circuit is used for outputting power supply current to the wireless charging circuit when receiving the first level signal; the power supply conversion circuit is also used for outputting power supply current to the wired charging circuit when the first level signal is not received; the overcurrent protection circuit is used for detecting the power supply current so as to carry out overcurrent protection on the power supply conversion circuit according to the power supply current. The utility model provides a support wireless charging and wired double-purpose power adapter who charges, this power adapter adaptation is various and the security is high.
Description
Technical Field
The utility model relates to a circuit electron field especially relates to a power adapter.
Background
The Power Adapter (Power Adapter) is a Power supply conversion device of small portable electronic equipment, and is widely matched with equipment such as a portable computer, a mobile phone, a liquid crystal display, a security camera, a set top box, a router, a lamp strip, a massager and the like. The power end is connected to present power adapter one end usually, and the other end is through the fixed interface connection charging device that charges, therefore current power adapter adaptation mode is more single.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a power adapter aims at solving the single problem of present power adapter adaptation mode.
In order to achieve the above object, the present invention provides a power adapter, which includes a wireless charging circuit, a wired charging circuit, a power conversion circuit, a detection circuit and an overcurrent protection circuit; the input end of the power supply conversion circuit is connected with commercial power, and the output end of the power supply conversion circuit is connected with the wireless charging circuit and the wired charging circuit; the output end of the detection circuit is connected with the power supply conversion circuit, and the detection end of the detection circuit is connected with the wireless charging circuit; the overcurrent protection circuit is connected with the power supply conversion circuit;
the detection circuit is used for detecting the induction voltage of the wireless charging circuit and sending a first level signal to the power supply conversion circuit when the induction voltage reaches a preset voltage value;
the power supply conversion circuit is used for outputting power supply current to the wireless charging circuit when receiving the first level signal;
the power supply conversion circuit is also used for outputting power supply current to the wired charging circuit when the first level signal is not received;
the overcurrent protection circuit is used for detecting the power supply current so as to carry out overcurrent protection on the power supply conversion circuit according to the power supply current.
Optionally, the wireless charging circuit includes an induction coil, a driving module, a control chip, a voltage sensor, and a first AC-DC circuit; the input end of the first AC-DC circuit is connected with the power supply conversion circuit, the output end of the first AC-DC circuit is connected with the input end of the driving module, and the output end of the driving module is connected with the induction coil; the detection end of the voltage sensor is connected with the driving module, the output end of the voltage sensor is connected with the control chip, and the output end of the control chip is connected with the control end of the driving circuit.
Optionally, the wireless charging circuit further includes a first rectifying and filtering circuit, an input end of the first rectifying and filtering circuit is connected to the driving module, and an output end of the first rectifying and filtering circuit is connected to the induction coil.
Optionally, the wired charging circuit comprises a second AC-DC circuit, a DC-DC circuit, and a charging interface; the input end of the second AC-DC circuit is connected with the power supply conversion circuit, and the output end of the AC-DC circuit is sequentially connected with the DC-DC circuit and the charging interface.
Optionally, the charging interface is at least one of a Type-C interface, a Micro USB interface, and a Lightning interface.
Optionally, the wired charging circuit further includes a second rectifying and filtering circuit, an input end of the second rectifying and filtering circuit is connected to an output end of the DC-DC circuit, and an output end of the second rectifying and filtering circuit is connected to the charging interface.
Optionally, an isolation module is disposed between the wireless charging circuit and the wired charging circuit.
Optionally, the power adapter includes a housing, and the wireless charging circuit, the wired charging circuit, the power supply conversion circuit, the detection circuit, and the overcurrent protection circuit are accommodated in the housing.
The utility model provides a power adapter, which comprises a wireless charging circuit, a wired charging circuit, a power supply conversion circuit, a detection circuit and an overcurrent protection circuit; the input end of the power supply conversion circuit is connected with commercial power, and the output end of the power supply conversion circuit is connected with the wireless charging circuit and the wired charging circuit; the output end of the detection circuit is connected with the power supply conversion circuit, and the detection end of the detection circuit is connected with the wireless charging circuit; the overcurrent protection circuit is connected with the power supply conversion circuit; the detection circuit is used for detecting the induction voltage of the wireless charging circuit and sending a first level signal to the power supply conversion circuit when the induction voltage reaches a preset voltage value; the power supply conversion circuit is used for outputting power supply current to the wireless charging circuit when receiving the first level signal; the power supply conversion circuit is also used for outputting power supply current to the wired charging circuit when the first level signal is not received; the overcurrent protection circuit is used for detecting the power supply current so as to carry out overcurrent protection on the power supply conversion circuit according to the power supply current. Therefore, the power adapter supporting wired charging and wireless charging functions is provided, and the diversity of power adaptation is improved. On the other hand, the overcurrent protection circuit is arranged, so that the use safety of the power adapter is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention 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 one embodiment of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic block diagram of an embodiment of a power adapter according to the present invention;
fig. 2 is a detailed structural diagram of the power adapter of fig. 1.
The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 10 | |
14 | First AC- |
| 20 | |
15 | |
| 30 | Power |
16 | |
| 40 | |
21 | Second AC- |
| 50 | |
22 | DC- |
| 11 | |
23 | Second rectifying and filtering |
| 12 | First rectifying and |
24 | |
| 13 | Drive module |
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit ly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
The utility model provides a power adapter, referring to fig. 1, in an embodiment, the power adapter comprises a wireless charging circuit 10, a wired charging circuit 20, a power supply conversion circuit 30, a detection circuit 40 and an overcurrent protection circuit 50; the input end of the power supply conversion circuit 30 is connected with commercial power, and the output end of the power supply conversion circuit 30 is connected with the wireless charging circuit 10 and the wired charging circuit 20; the output end of the detection circuit 40 is connected with the power supply conversion circuit 30, and the detection end of the detection circuit 40 is connected with the wireless charging circuit 10; the overcurrent protection circuit 50 is connected with the power supply conversion circuit 30; the detection circuit 40 is configured to detect an induced voltage of the wireless charging circuit 10, and send a first level signal to the power supply conversion circuit 30 when the induced voltage reaches a preset voltage value; the power supply conversion circuit 30 is configured to output a power supply current to the wireless charging circuit 10 when receiving the first level signal; the power supply conversion circuit 30 is further configured to output a power supply current to the wired charging circuit 20 when the first level signal is not received; the overcurrent protection circuit 50 is configured to detect the supply current, so as to perform overcurrent protection on the power supply conversion circuit 30 according to the supply current.
The first level signal may be a high level. The detection circuit 40 is a dc detection circuit, and may be implemented by combining other discrete components with devices such as a comparator, an operational amplifier, or a switching tube, and the detection circuit 40 may also be formed by an integrated chip. The power supply conversion circuit 30 is mainly used to switch the output of the power supply current. The overcurrent protection circuit 50 is provided with a current transformer, so that the magnitude of the supply current can be detected through the current transformer, and when the supply current is found to belong to the overcurrent range, tripping or alarming can be performed.
According to the scheme, the wireless charging circuit 10 and the wired charging circuit 20 are arranged in the power adapter, and the arrangement of the detection circuit 40 and the power supply conversion circuit 30 is matched, so that when the situation that the equipment needs to be wirelessly charged is sensed, the power adapter can supply power to the equipment in a wireless charging mode similar to electromagnetic induction; when the wireless charging of the equipment is not sensed, the wired charging mode is kept to output the charging current. Therefore, the power adapter can adapt to various devices from the diversity aspect of the charging mode, and the diversity of the power adapter adaptation is improved. On the basis, the overcurrent protection circuit 50 is arranged, so that the use safety of the power adapter is improved.
Further, referring to fig. 1 and fig. 2 together, the wireless charging circuit 10 may include an induction coil 11, a driving module 13, a control chip 16, a voltage sensor 15, and a first AC-DC circuit 14; the input end of the first AC-DC circuit 14 is connected to the power supply conversion circuit 30, the output end of the first AC-DC circuit 14 is connected to the input end of the driving module 13, and the output end of the driving module 13 is connected to the induction coil 11; the detection end of the voltage sensor 15 is connected with the driving module 13, the output end of the voltage sensor 15 is connected with the control chip 16, and the output end of the control chip 16 is connected with the control end of the driving circuit.
The induction coil 11 is used as a transmitting coil, can induce whether a device approaches or not, and generates an induced voltage signal when the device approaches. The voltage sensor 15 may set a collection end at the driving module 13 to collect the induced voltage signal and output the induced voltage signal to the control chip 16, and the control chip 16 may perform analog-to-digital conversion on the induced voltage signal after receiving the induced voltage signal to obtain an induced voltage value, and then send the induced voltage value to the detection circuit 40. The detection circuit 40 determines whether to feed back the first level signal to the power conversion module according to the magnitude of the induced voltage value. On the other hand, when the power conversion module outputs the charging current to the wireless charging circuit 10, so that the power adapter starts the wireless charging function, the control chip 16 may control the driving module 13 to supply power to the induction coil 11. The power adapter provides a wireless charging function through the arrangement of the voltage sensor 15, the driving module 13 and the like in the wireless charging circuit 10.
Optionally, the wireless charging circuit 10 may further include a first rectifying and filtering circuit 12, an input end of the first rectifying and filtering circuit 12 is connected to the driving module 13, and an output end of the first rectifying and filtering circuit 12 is connected to the induction coil 11. Through the setting of first rectification filter circuit 12, the interference killing feature is strong.
Further, the wired charging circuit 20 includes a second AC-DC circuit 21, a DC-DC circuit 22, and a charging interface 24; the input end of the second AC-DC circuit 21 is connected to the power supply conversion circuit 30, and the output end of the AC-DC circuit is sequentially connected to the DC-DC circuit 22 and the charging interface 24.
The charging interface 24 is at least one of a Type-C interface, a Micro USB interface, and a Lightning interface. The charging interface 24 in various forms can enable the power adapter to be correspondingly adapted to different electric devices. The DC-DC circuit 22 may step down the supply voltage after AC-DC by the supply switching circuit to make it suitable for charging.
In addition, the wired charging circuit 20 may further include a second rectifying and smoothing circuit 23, an input end of the second rectifying and smoothing circuit 23 is connected to an output end of the DC-DC circuit 22, and an output end of the second rectifying and smoothing circuit 23 is connected to the charging interface 24. Through the setting of second rectification filter circuit 23, the interference killing feature is strong.
With continued reference to fig. 2, an isolation module 60 is disposed between the wireless charging circuit 10 and the wired charging circuit 20. The isolation module 60 may be a plastic component, and its specific shape may be specifically configured according to the internal structure of the power adapter, which is not described herein in detail. Mutual interference between the wireless charging circuit 10 and the wired charging circuit 20 is reduced by the arrangement of the isolation module 60.
The power adapter includes a housing (not shown), and the wireless charging circuit 10, the wired charging circuit 20, the power conversion circuit 30, the detection circuit 40, and the overcurrent protection circuit 50 are accommodated in the housing. Still be formed with the opening with the interface 24 adaptation that charges on the casing, make the interface 24 that charges pass through the opening and pass through the wire with the power consumption setting and be connected. Through the setting of casing, prevent that the circuit from exposing outside, also reduce the interference that external environment brought.
The above is only the preferred embodiment of the present invention, and not the scope of the present invention, all the equivalent structures or equivalent flow changes made by the contents of the specification and the drawings or the direct or indirect application in other related technical fields are included in the patent protection scope of the present invention.
Claims (8)
1. A power adapter is characterized by comprising a wireless charging circuit, a wired charging circuit, a power supply conversion circuit, a detection circuit and an overcurrent protection circuit; the input end of the power supply conversion circuit is connected with commercial power, and the output end of the power supply conversion circuit is connected with the wireless charging circuit and the wired charging circuit; the output end of the detection circuit is connected with the power supply conversion circuit, and the detection end of the detection circuit is connected with the wireless charging circuit; the overcurrent protection circuit is connected with the power supply conversion circuit;
the detection circuit is used for detecting the induction voltage of the wireless charging circuit and sending a first level signal to the power supply conversion circuit when the induction voltage reaches a preset voltage value;
the power supply conversion circuit is used for outputting power supply current to the wireless charging circuit when receiving the first level signal;
the power supply conversion circuit is also used for outputting power supply current to the wired charging circuit when the first level signal is not received;
the overcurrent protection circuit is used for detecting the power supply current so as to carry out overcurrent protection on the power supply conversion circuit according to the power supply current.
2. The power adapter of claim 1, wherein the wireless charging circuit comprises an induction coil, a drive module, a control chip, a voltage sensor, and a first AC-DC circuit; the input end of the first AC-DC circuit is connected with the power supply conversion circuit, the output end of the first AC-DC circuit is connected with the input end of the driving module, and the output end of the driving module is connected with the induction coil; the detection end of the voltage sensor is connected with the driving module, the output end of the voltage sensor is connected with the control chip, and the output end of the control chip is connected with the control end of the driving module.
3. The power adapter of claim 2 wherein the wireless charging circuit further comprises a first rectifying and filtering circuit, an input of the first rectifying and filtering circuit is connected to the driving module, and an output of the first rectifying and filtering circuit is connected to the induction coil.
4. The power adapter as described in claim 1, wherein the wired charging circuit comprises a second AC-DC circuit, a DC-DC circuit, and a charging interface; the input end of the second AC-DC circuit is connected with the power supply conversion circuit, and the output end of the AC-DC circuit is sequentially connected with the DC-DC circuit and the charging interface.
5. The power adapter as claimed in claim 4, wherein the charging interface is at least one of a Type-C interface, a Micro USB interface and a Lightning interface.
6. The power adapter as claimed in claim 4, wherein the wired charging circuit further comprises a second rectifying and filtering circuit, an input terminal of the second rectifying and filtering circuit is connected with an output terminal of the DC-DC circuit, and an output terminal of the second rectifying and filtering circuit is connected with the charging interface.
7. The power adapter as claimed in any one of claims 1-6, wherein an isolation module is disposed between the wireless charging circuit and the wired charging circuit.
8. The power adapter of claim 7, comprising a housing, the wireless charging circuit, the wired charging circuit, the power conversion circuit, the detection circuit, and the over-current protection circuit being housed within the housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120365922.8U CN214798917U (en) | 2021-02-07 | 2021-02-07 | Power adapter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120365922.8U CN214798917U (en) | 2021-02-07 | 2021-02-07 | Power adapter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214798917U true CN214798917U (en) | 2021-11-19 |
Family
ID=78753267
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120365922.8U Expired - Fee Related CN214798917U (en) | 2021-02-07 | 2021-02-07 | Power adapter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214798917U (en) |
-
2021
- 2021-02-07 CN CN202120365922.8U patent/CN214798917U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20211119 |