CN217984638U - Charging circuit and charging device - Google Patents
Charging circuit and charging device Download PDFInfo
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- CN217984638U CN217984638U CN202222200234.3U CN202222200234U CN217984638U CN 217984638 U CN217984638 U CN 217984638U CN 202222200234 U CN202222200234 U CN 202222200234U CN 217984638 U CN217984638 U CN 217984638U
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Abstract
The utility model discloses a charging circuit and a charging device, wherein, the charging circuit comprises a first output port which is used for being connected with a first charging device; at least one second output port; the number of the detection modules is the same as that of the second output ports, and one detection module is correspondingly connected with one second output port; the detection module is used for outputting a starting signal when the corresponding second output port is connected to the second charging equipment; the PD controller is connected with the first output port and is connected with one or more than two detection modules; the PD controller is used for enabling the second output port connected with the corresponding detection module to output electric energy according to the starting signal, and the detection module is arranged to expand the plurality of output ports, so that the cost is reduced by reducing the setting of the PD controller.
Description
Technical Field
The utility model relates to a show technical field, in particular to charging circuit and charging device.
Background
At present, a quick charging product on the market is generally provided with a plurality of external output ports, and the external output ports have larger dependence on a PD controller. As shown in fig. 1, basically, one more PD controller is needed to be provided for one more external output port, and thus, when a plurality of external output ports are provided, a corresponding plurality of PD controllers are needed, which results in high product cost.
Thus, the prior art has yet to be improved and enhanced.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a charging circuit and charging device utilizes a PD controller to realize the setting of a plurality of output ports, and then reduces the figure of PD controller with reduce cost.
In order to achieve the purpose, the utility model adopts the following technical proposal:
an embodiment of the present application provides a charging circuit, including:
a first output port for connection with a first charging device;
at least one second output port for connection with at least one second charging device;
the number of the detection modules is the same as that of the second output ports, and one detection module is correspondingly connected with one second output port; the detection module is used for outputting a starting signal when the corresponding second output port is connected to the second charging equipment;
the PD controller is connected with the first output port and is connected with one or more than two detection modules; the PD controller is used for enabling the second output port connected with the corresponding detection module to output electric energy according to the starting signal.
In some embodiments, the charging circuit, the second output port includes a CC pin, and the detection module is connected to the CC pin via a CC line.
In the charging circuit in some embodiments, the second output port further includes a power pin, and the power pin is connected to the PD controller, and the PD controller is specifically configured to enable the power pin to output electric energy according to the start signal.
In some embodiments, the charging circuit, the detection module comprises:
and the detection unit is connected with the PD controller and the second output port and used for outputting a starting signal to the PD controller when the corresponding second output port is connected to the second charging equipment.
In some embodiments, the charging circuit, the detection module further comprises:
and the power adjusting unit is connected with the PD controller and the corresponding second output port and is used for adjusting the output power of the second output port according to the adjusting signal output by the PD controller.
In the charging circuit in some embodiments, the detection unit includes a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a first capacitor, a first switch tube, a second switch tube, and a third switch tube;
the one end and the first output port of first resistance are connected, the other end of first resistance, the first end of first switch tube and the one end of first electric capacity all are connected with the PD controller, the second end of first switch tube and the one end of fifth resistance all connect the electricity, the third end of first switch tube is connected with the one end of third resistance, the other end of third resistance is connected with the one end of fourth resistance and the one end of second resistance, the other end of fourth resistance is connected with the first end of second switch tube, the other end of second resistance, the one end of first electric capacity and the second end of second switch tube all ground connection, the third end of second switch tube and the other end of fifth resistance all are connected with the PD controller.
In the charging circuit in some embodiments, the power regulating unit includes a sixth resistor, a seventh resistor, an eighth resistor, a third switch tube and a second capacitor;
one end of a sixth resistor and one end of a seventh resistor are connected with the second output port, the other end of the sixth resistor is connected with the power supply, the first end of a third switching tube, one end of an eighth resistor and one end of a first capacitor are connected with the PD controller, the other end of the eighth resistor and the second end of the third switching tube are connected with the power supply, the third end of the third switching tube is connected with the other end of the seventh resistor, and the other end of the second capacitor is grounded.
In some embodiments, the first switching tube includes a first MOS tube, and the second switching tube includes a transistor;
the first end of the first switch tube is a grid electrode of the first MOS tube, the second end of the first switch tube is a source electrode of the first MOS tube, and the third end of the first switch tube is a drain electrode of the first MOS tube; the first end of the second switch tube is a base electrode of the triode, the second end of the second switch tube is an emitting electrode of the triode, and the third end of the second switch tube is a collector electrode of the triode.
In some embodiments, the third switching tube includes a second MOS tube, a first end of the third switching tube is a gate of the second MOS tube, a second end of the third switching tube is a drain of the second MOS tube, and a third end of the third switching tube is a source of the second MOS tube.
The embodiment of the application also provides a charging device which comprises the charging circuit.
Compared with the prior art, the utility model provides a charging circuit and charging device, first output port is direct to be connected with the PD controller, if need set up a plurality of output ports under the condition that does not increase the PD controller, the second output port that so sets up need be connected with the PD controller through detection module. At this time, the first output port relies on the PD controller to realize the wake-up function when the charging device is inserted, and the PD controller controls the first output port to output the electric energy to charge the first charging device after waking up. The other second output ports need the detection modules connected with each other to output the starting signal to wake up the PD controller, so that a PD controller does not need to be arranged when the second output port is additionally arranged, multi-port output can be realized by using one PD controller, the output ports of a single PD controller are expanded, the arrangement of the PD controller is reduced, and the cost is saved.
Drawings
Fig. 1 is a block diagram of a charging circuit according to the prior art.
Fig. 2 is a block diagram of the charging circuit provided by the present invention.
Fig. 3 is a block diagram of a detection module in the charging circuit provided by the present invention.
Fig. 4 is a schematic circuit diagram of the detection module in the charging circuit provided by the present invention.
Detailed Description
An object of the utility model is to provide a charging circuit and charging device utilizes a PD controller to realize the setting of a plurality of output ports, and then reduces the figure of PD controller with reduce cost.
In order to make the purpose, technical solution and effect of the present invention clearer and clearer, the following description refers to the accompanying drawings and examples to further explain the present invention in detail. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
The utility model provides a PD charging circuit can be applied to the charging of equipment such as VR head display device and game paddle.
Referring to fig. 2, the charging circuit provided by the present invention includes a first output port 11 for connecting with a first charging device; at least one second output port 12, when the number of the second output ports 12 is one, the second output port 12 is used for connecting any second charging device; when the number of the second output ports 12 is at least two, each second output port 12 is used for correspondingly connecting one second charging device; at least one detection module 13, where the number of the detection modules 13 is the same as the number of the second output ports 12, and one detection module 13 is correspondingly connected to one second output port 12, that is, if one second output port 12 is provided, one detection module 13 is correspondingly provided, the second output port 12 is connected to the PD controller 14 through the detection module 13, if at least two second output ports 12 are provided, at least two or more detection modules 13 are correspondingly provided, and each detection module 13 is correspondingly connected to one second output port 12; the detection module 13 is configured to output a start signal when the corresponding second output port 12 is connected to the second charging device; a PD controller 14 connected to the first output port 11 and to one or more detection modules 13; the PD controller 14 is configured to enable the second output port 12 connected to the corresponding detection module 13 to output power according to the enabling signal, so as to charge the second charging device plugged in the second output port 12.
The PD controller 14 in the present application may be a PD chip. The first output port 11 is directly connected to the PD controller 14, and if a plurality of output ports need to be provided without adding the PD controller 14, the second output port 12 needs to be connected to the PD controller 14 through the detection module 13. At this time, the first output port 11 relies on the PD controller 14 itself to implement the wake-up function when the charging device is plugged in, and after the PD controller 14 wakes up, the first output port 11 is controlled to output the electric energy to charge the first charging device. The other second output ports 12 need the detection modules 13 connected to each other to output the start signal to wake up the PD controller 14, so that a PD controller 14 does not need to be set up when each second output port 12 is additionally provided, multi-port output can be realized by using one PD controller 14, the output ports of a single PD controller 14 are expanded, the setting of the PD controller 14 is reduced, and the cost is saved.
In a specific embodiment, the second output port 12 includes a CC pin, and the detection module 13 is connected to the CC pin through a CC line; the second output port 12 further includes a power pin, the power pin is connected to the PD controller 14, and the PD controller 14 is specifically configured to enable the power pin to output electric energy according to the start signal, so as to charge a second charging device inserted into the second output port 12. When the PD controller 14 enables the power pin in the second output port 12 to output electric energy, the switching tube may be arranged between the PD controller 14 and the power pin, and after the PD controller 14 enters a working state according to the start signal, the switching tube is controlled to be turned on, so that the power pin is powered on, and then the corresponding second charging device is charged. It should be noted that other enable circuits may be selected in other embodiments, and the present invention is not limited to this.
In some embodiments, referring to fig. 3, the detection module 13 includes a detection unit 131, and the detection unit 131 is connected to the PD controller 14 and the CC pin in the second output port 12; the detecting unit 131 is configured to output a start signal to the PD controller 14 when the corresponding second output port 12 is connected to the second charging apparatus. In the present application, when the second charging device is inserted into the second output port 12 through the setting detection unit 131, it is not necessary to rely on the PD controller 14 to detect whether the second charging device is inserted to wake up the operating state. At this time, a start chip is output to the PD controller 14 through the detection unit 131, so that the PD controller 14 wakes up to enter the working state according to the start signal. After the PD controller 14 enters the operating state, the power pin in the second output port 12 is enabled to be powered on in order to charge the corresponding second charging device.
In some embodiments, the detection module 13 further includes a power adjusting unit 132, the power adjusting unit 132 being connected with the PD controller 14 and the CC pin in the corresponding second output port 12; the power adjusting unit 132 is configured to adjust the output power of the second output port 12 according to the adjusting signal output by the PD controller 14.
When a first output port 11 and a second output port 12 are provided, if the first output port 11 and the second output port 12 are plugged into the first charging device and the second charging device at the same time, the PD controller 14 may use the default output power of the first output port 11 and the second output port 12 to supply power to the first charging device and the second charging device. When the power requirement of the first charging device can be met under the condition of the default output power, the power adjusting unit 132 connected to the second output port 12 may be selected to output the adjusting signal, and the power adjusting unit 132 increases the charging current of the second output port 12 according to the adjusting signal to increase the output power; if the default output power cannot meet the power requirement of the first charging device, the power adjusting unit 132 may also be connected to the second output port 12 by outputting an adjusting signal, and the power adjusting unit 132 reduces the charging current of the second output port 12 according to the adjusting signal, so as to reduce the output power of the second output port 12.
Similarly, when one first output port 11 is provided, at least two second output ports 12 are provided. The first output port 11 and the second output ports 12 are both in an operating state, the first output port 11 is plugged into a first charging device, and each of the second output ports 12 is plugged into a second charging device. The first output port 11 and the second output port 12 charge the corresponding charging devices according to the default output power; the PD controller 14 then detects whether the default output power meets the power requirement of each charging device, and then outputs an adjustment signal to any one or more of the power adjusting units 132. The power adjusting unit 132 receiving the adjusting signal can switch the charging current of the corresponding second output port 12, thereby implementing effective adjustment of the output power of the second output port 12 and ensuring effective distribution of the charging power of each charging device.
In some embodiments, referring to fig. 4, the detecting unit 131 includes a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a first capacitor C1, a first switch tube Q1, a second switch tube Q2, and a third switch tube Q3; one end of the first resistor R1 is connected to the first output Port 11, the other end of the first resistor R1, the first end of the first switch tube Q1, and one end of the first capacitor C1 are all connected to the PD controller 14 (i.e., connected to the Port1_ CC1_ DET signal end), the second end of the first switch tube Q1 and one end of the fifth resistor R5 are all connected to power, the third end of the first switch tube Q1 is connected to one end of the third resistor R3, the other end of the third resistor R3 is connected to one end of the fourth resistor R4 and one end of the second resistor R2, the other end of the fourth resistor R4 is connected to the first end of the second switch tube Q2, the other end of the second resistor R2, one end of the first capacitor C1, and the second end of the second switch tube Q2 are all grounded, the third end of the second switch tube Q2 and the other end of the fifth resistor R5 are all connected to the PD controller 14 (i.e., connected to the WAKE _1 signal end). The first switching tube Q1 comprises a first MOS tube, and the second switching tube Q2 comprises a triode; the first end of the first switch tube Q1 is a grid electrode of the first MOS tube, the second end of the first switch tube Q1 is a source electrode of the first MOS tube, and the third end of the first switch tube Q1 is a drain electrode of the first MOS tube; the first end of the second switch tube Q2 is a base electrode of the triode, the second end of the second switch tube Q2 is an emitting electrode of the triode, and the third end of the second switch tube Q2 is a collecting electrode of the triode.
When a second charging device is connected to the second output port 12, a differential pressure is generated between the source and the drain of the first MOS transistor and is conducted, so that the base of the triode obtains a high level, and thus the level of the WAKE _1 port is inverted from "1" to "0" to interrupt and WAKE up the PD controller 14. After waking up, the PD controller 14 reads the voltage of the Port1_ CC1_ DET signal terminal, and if the read voltage is within the set range, the corresponding power pin of the second output Port 12 is enabled to be powered on.
In some embodiments, the power adjusting unit 132 includes a sixth resistor R6, a seventh resistor R7, an eighth resistor R8, a third switching tube Q3, and a second capacitor C2; one end of a sixth resistor R6 and one end of a seventh resistor R7 are both connected with the second output port 12, the other end of the sixth resistor R6 is connected with the power supply, the first end of a third switch tube Q3, one end of an eighth resistor R8 and one end of a first capacitor C1 are both connected with the PD controller 14 (namely connected with the Rort1_ Rp _22K signal end), the other end of the eighth resistor R8 and the second end of the third switch tube Q3 are both connected with the power supply, the third end of the third switch tube Q3 is connected with the other end of the seventh resistor R7, and the other end of the second capacitor C2 is grounded. The third switching tube Q3 includes a second MOS tube, a first end of the third switching tube Q3 is a gate of the second MOS tube, a second end of the third switching tube Q3 is a drain of the second MOS tube, and a third end of the third switching tube Q3 is a source of the second MOS tube.
When the second output Port 12 is charged with the default output power, and the second MOS transistor is in an off state at this time, the PD controller 14 may read the voltage of the Port1_ CC1_ DET signal terminal as the first voltage value, and the PD controller 14 sets the charging current of the second output Port 12 to be equal to or less than 500mA according to the first voltage value. When the PD controller 14 detects that the power supply capability is sufficient, the second MOS transistor may be turned on by pulling down the level of the rot 1_ Rp _22K signal end, and then the PD controller 14 may read that the voltage of the Port1_ CC1_ DET signal end is the second voltage value, and the PD controller 14 sets the charging current of the second output Port 12 according to the second voltage value, which may be increased by a value less than or equal to 1.5A, thereby implementing power switching and ensuring distribution of charging power of each charging device.
In an embodiment of the present application, a charging device is further provided, where the charging device includes the charging circuit described above, and details of the charging circuit are not described herein again.
To sum up, the utility model provides a charging circuit and a charging device, wherein, the charging circuit includes a first output port for connecting with a first charging device; at least one second output port; the number of the detection modules is the same as that of the second output ports, and one detection module is correspondingly connected with one second output port; the detection module is used for outputting a starting signal when the corresponding second output port is connected to the second charging equipment; the PD controller is connected with the first output port and is connected with one or more than two detection modules; the PD controller is used for enabling the second output port connected with the corresponding detection module to output electric energy according to the starting signal, the number of the output ports is expanded by arranging the detection modules, and then the cost is reduced by reducing the arrangement of the PD controller.
It should be understood that equivalent alterations and modifications can be made by those skilled in the art according to the technical solution of the present invention and the inventive concept thereof, and all such alterations and modifications should fall within the scope of the appended claims.
Claims (10)
1. A charging circuit, comprising:
a first output port for connection with a first charging device;
at least one second output port for connection with at least one second charging device;
the number of the detection modules is the same as that of the second output ports, and one detection module is correspondingly connected with one second output port; the detection module is used for outputting a starting signal when the corresponding second output port is connected to the second charging device;
a PD controller connected to the first output port and connected to one or more of the detection modules; the PD controller is used for enabling the second output port connected with the corresponding detection module to output electric energy according to the starting signal.
2. The charging circuit of claim 1, wherein the second output port comprises a CC pin, and wherein the detection module is connected to the CC pin via a CC line.
3. The charging circuit of claim 1, wherein the second output port further comprises a power pin, the power pin being connected to the PD controller, the PD controller being configured to enable the power pin to output power according to a start signal.
4. The charging circuit according to any one of claims 1-3, wherein the detection module comprises:
and the detection unit is connected with the PD controller and the second output port and is used for outputting a starting signal to the PD controller when the corresponding second output port is connected to the second charging equipment.
5. The charging circuit of claim 4, wherein the detection module further comprises:
and the power adjusting unit is connected with the PD controller and the corresponding second output port and is used for adjusting the output power of the second output port according to the adjusting signal output by the PD controller.
6. The charging circuit of claim 5, wherein the detection unit comprises a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a first capacitor, a first switch tube, a second switch tube and a third switch tube;
one end of the first resistor is connected with the first output port, the other end of the first resistor, the first end of the first switch tube and one end of the first capacitor are all connected with the PD controller, the second end of the first switch tube and one end of the fifth resistor are all connected with electricity, the third end of the first switch tube is connected with one end of the third resistor, the other end of the third resistor is connected with one end of the fourth resistor and one end of the second resistor, the other end of the fourth resistor is connected with the first end of the second switch tube, the other end of the second resistor, one end of the first capacitor and the second end of the second switch tube are all grounded, and the third end of the second switch tube and the other end of the fifth resistor are all connected with the PD controller.
7. The charging circuit of claim 6, wherein the power regulating unit comprises a sixth resistor, a seventh resistor, an eighth resistor, a third switching tube and a second capacitor;
one end of the sixth resistor and one end of the seventh resistor are both connected with the second output port, the other end of the sixth resistor is connected with the power supply, the first end of the third switching tube, one end of the eighth resistor and one end of the first capacitor are all connected with the PD controller, the other end of the eighth resistor and the second end of the third switching tube are connected with the power supply, the third end of the third switching tube is connected with the other end of the seventh resistor, and the other end of the second capacitor is grounded.
8. The charging circuit of claim 6, wherein the first switching tube comprises a first MOS tube, and the second switching tube comprises a triode;
the first end of the first switching tube is a grid electrode of the first MOS tube, the second end of the first switching tube is a source electrode of the first MOS tube, and the third end of the first switching tube is a drain electrode of the first MOS tube; the first end of the second switch tube is the base electrode of the triode, the second end of the second switch tube is the emitting electrode of the triode, and the third end of the second switch tube is the collector electrode of the triode.
9. The charging circuit of claim 7, wherein the third switching transistor comprises a second MOS transistor, the first terminal of the third switching transistor is a gate of the second MOS transistor, the second terminal of the third switching transistor is a drain of the second MOS transistor, and the third terminal of the third switching transistor is a source of the second MOS transistor.
10. A charging device comprising a charging circuit as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222200234.3U CN217984638U (en) | 2022-08-19 | 2022-08-19 | Charging circuit and charging device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222200234.3U CN217984638U (en) | 2022-08-19 | 2022-08-19 | Charging circuit and charging device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217984638U true CN217984638U (en) | 2022-12-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222200234.3U Active CN217984638U (en) | 2022-08-19 | 2022-08-19 | Charging circuit and charging device |
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| Country | Link |
|---|---|
| CN (1) | CN217984638U (en) |
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- 2022-08-19 CN CN202222200234.3U patent/CN217984638U/en active Active
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