CN211209332U - Portable power source charge-discharge controller - Google Patents
Portable power source charge-discharge controller Download PDFInfo
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- CN211209332U CN211209332U CN201922156369.2U CN201922156369U CN211209332U CN 211209332 U CN211209332 U CN 211209332U CN 201922156369 U CN201922156369 U CN 201922156369U CN 211209332 U CN211209332 U CN 211209332U
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Abstract
The utility model relates to a portable power source technical field discloses a can automatic detection insert and treat portable power source charge-discharge controller that charging product and constant current charge possess: the charging insertion detection circuit is connected with the input end of the equipment to be charged and is used for detecting whether the equipment to be charged is connected with the circuit; the output end of the DC equipment detection circuit is coupled with the input end of the equipment to be charged; the output end of the USB device detection circuit is coupled with the input end of the device to be charged; the output end of the drive circuit is coupled with the input end of the charging insertion detection circuit and outputs a level signal to the charging insertion detection circuit; when the device to be charged is inserted into the charging port of the charging insertion detection circuit, the driving circuit inputs a high level to the charging insertion detection circuit, and the high level is used for driving the charging insertion detection circuit to send a charging starting instruction, so that the device to be charged is charged.
Description
Technical Field
The utility model relates to a portable power source technical field, more specifically say, relate to a portable power source charge-discharge controller.
Background
The portable power source is a relatively common electronic charging device in daily life. In the prior art, when a mobile power supply charges a mobile phone or a tablet personal computer, when a built-in battery cell and a lithium polymer battery cell control a storage battery to output current to a load, the battery cell and the lithium polymer battery cell cannot control the output electric quantity of the storage battery, so that the service cycle of the built-in storage battery of the mobile power supply is shortened when the mobile power supply is used for a long time.
Therefore, the single-time output electric quantity of the storage battery with intelligent control is provided in the prior art, and the problem that the service cycle of the storage battery is shortened due to over-discharge is effectively solved. However, when the existing mobile power supply is connected to the electronic product to be charged at the USB or DC port, the mobile power supply cannot make a charging response in time, which affects the use of the user.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model lies in, do not possess automatic check out test set male defect to the above-mentioned portable power source of prior art, provide one kind and possess the automatic check-in and wait to charge portable power source charge-discharge controller that product and constant current charge.
The utility model provides a technical scheme that its technical problem adopted is: a portable power source charge/discharge controller is configured to include:
the charging insertion detection circuit is connected with the input end of the equipment to be charged and is used for detecting whether the equipment to be charged is connected with the circuit or not;
the charging insertion detection circuit comprises a DC equipment detection circuit and a USB equipment detection circuit;
the output end of the DC equipment detection circuit is coupled with the input end of the equipment to be charged;
the output end of the USB device detection circuit is coupled with the input end of the device to be charged;
a driving circuit, the output end of which is coupled to the input end of the charging insertion detection circuit, and outputs a level signal to the charging insertion detection circuit;
when the charging port of the charging insertion detection circuit is inserted into the device to be charged, the driving circuit inputs a high level to the charging insertion detection circuit, and the high level is used for driving the charging insertion detection circuit to send a charging starting instruction so as to charge the device to be charged.
In some embodiments, the driving circuit is configured as a first driving circuit and a second driving circuit,
the signal output end of the first driving circuit is coupled to the USB equipment detection end of the charging insertion detection circuit;
the signal output end of the second driving circuit is coupled to the DC equipment detection end of the charging insertion detection circuit.
In some embodiments, the first driving circuit comprises a first transistor and a second transistor,
the base electrode of the first triode is connected with the enabling end of the microcontroller;
the collector of the first triode is connected with the base of the second triode;
and the collector electrode of the second triode is coupled with the USB equipment detection end of the microcontroller.
In some embodiments, the second driving circuit further includes a voltage boosting circuit, an output terminal of the voltage boosting circuit is coupled to an input terminal of the charge insertion detection circuit, and the voltage boosting circuit is configured to stabilize a voltage input to the charge insertion detection circuit.
In some embodiments, the charge insertion detection circuit further comprises a microcontroller,
the DC equipment detection end of the microcontroller is coupled with the output end of the booster circuit.
In some embodiments, the charge insertion detection circuit further comprises a first resistor and a second resistor,
one end of the first resistor is connected with a power supply end, and the other end of the first resistor is commonly connected with a detection end of the microcontroller and one end of the second resistor;
the other end of the second resistor is connected with a common end.
In some embodiments, the DC device detection circuit includes a first field effect transistor, a first connector, an eighth resistor, a ninth resistor, and a tenth resistor,
the grid electrode of the first field effect transistor is coupled to an enabling end of the microcontroller;
the source electrode of the first field effect transistor is connected with a power supply end;
the drain electrode of the first field effect transistor is coupled to the output end of the first connector and one end of the eighth resistor;
the input end of the first connector is connected with the output end of the second drive circuit;
the other end of the eighth resistor is connected with one end of the ninth resistor;
the other end of the ninth resistor is commonly connected with a DC equipment detection end of the microcontroller and one end of the tenth resistor;
the other end of the tenth resistor is connected to the common terminal.
Portable power source charge-discharge controller in, insert detection circuitry including charging, its input with treating the battery charging outfit is connected, it is used for detecting whether treat the battery charging outfit and insert the circuit. The charging insertion detection circuit comprises a DC equipment detection circuit and a USB equipment detection circuit. The output end of the drive circuit is coupled with the input end of the charging insertion detection circuit and outputs a level signal to the charging insertion detection circuit; when the charging port of the charging insertion detection circuit is inserted into the device to be charged, the driving circuit inputs a high level to the charging insertion detection circuit, and the high level is used for driving the charging insertion detection circuit to send a charging starting instruction so as to charge the device to be charged. Compared with the prior art, whether the external equipment is connected to the charging port or not is detected through the charging insertion detection circuit, and when the external equipment is inserted into a charging wire, the driving circuit inputs a high level to the charging insertion detection circuit so that the charging insertion detection circuit can make a charging instruction. The circuit can be triggered to output the charging instruction through the detection signal, so that the mobile power supply can timely make a charging reaction, and the practicability and reliability of the mobile power supply are improved.
Drawings
The invention will be further explained with reference to the drawings and examples, wherein:
fig. 1a is a circuit diagram of a partial charge insertion detection circuit according to an embodiment of the present invention;
fig. 1b is a circuit diagram of a partial charge insertion detection circuit according to another embodiment of the charging and discharging controller of the mobile power supply of the present invention;
fig. 2 is a driving circuit diagram of a USB device detection circuit according to an embodiment of the present invention;
fig. 3 is a driving circuit diagram of a DC device detection circuit according to an embodiment of the present invention.
Detailed Description
In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
As shown in fig. 1 a-3, in the first embodiment of the charging and discharging controller for a portable power source of the present invention, it mainly includes a charging insertion detection circuit 100 and a driving circuit (200, 300).
The charging insertion detection circuit 100 can automatically identify and detect whether the device to be charged is connected to the power output port of the mobile power supply, and drive the internal circuit to output a constant current voltage through a level.
The drive circuit (200, 300) applies a level signal between the control terminal and the common terminal of the charge insertion detection circuit 100 to turn on and output a charge instruction.
Specifically, the power output port of the charging insertion detection circuit 100 is connected to the input terminal of the device to be charged, and is used for detecting whether the device to be charged is connected to the circuit.
The charging insertion detection circuit 100 includes a microcontroller MCU, a DC device detection circuit 101, and a USB device detection circuit 102.
The microcontroller MCU serves as a core part of the charging insertion detection circuit 100, and has functions of logic operation, control, analysis and instruction output.
Specifically, the DC device detecting circuit 101 is used to detect whether an external device (e.g., a DC-DC converter) is connected to the power output terminal of the DC device detecting circuit 101.
The signal input end of the DC device detection circuit 101 is connected to the output end of the controller MCU and receives a driving signal output from the controller MCU, the output end of the DC device detection circuit 101 is coupled to the input end of the device to be charged, and the charging current is input to the device to be charged through the DC device detection circuit 101.
Further, the USB device detecting circuit 102 is used to detect whether an external device (e.g., a USB interface) is connected to the power output terminal of the USB device detecting circuit 102.
The signal input end of the USB device detection circuit 102 is connected to the output end of the controller MCU and receives a driving signal output by the controller MCU, the output end of the USB device detection circuit 102 is coupled to the input end of the device to be charged, and the charging current is input to the device to be charged by the USB device detection circuit 102.
The output terminal of the driving circuit (200, 300) is coupled to the input terminal of the charging insertion detection circuit 100, and outputs a level signal to the charging insertion detection circuit 100.
When the charging port of the charging insertion detection circuit 100 is inserted into the device to be charged, the driving circuit inputs a high level for driving the charging insertion detection circuit 100 to issue a start-up charging instruction to the charging insertion detection circuit 100, so as to charge the device to be charged.
For example, when the insertion detection circuit 100 is not connected to the device to be charged, the 5V line has no voltage, and the 4 th pin from the first resistor R1 to the controller MCU is at a low level, and at this time, the low level cannot start to wake up the controller MCU of the insertion detection circuit 100;
when a charging line of a device to be charged at a charging interface is connected, under the action of a pull-up resistor (i.e., a first resistor R1) and a pull-down resistor (a second resistor R2), at this time, a pin 4 of the controller MCU is at a high level, and when the controller MCU detects this level, the detection circuit 100 is inserted to start a charging state instruction, so as to charge the device to be charged.
Further, when a device to be charged is inserted into the DC port, a high level is input to pin 7 of the controller MCU, a voltage flows from the positive DC terminal to the negative DC terminal through the device, and when the voltage +7.4V is input to pin 7 of the controller MCU due to the pull-up resistor (i.e., the eighth resistor R8 and the ninth resistor R9) and the pull-down resistor (i.e., the tenth resistor R10) when the first fet VT1 is in the off state, the controller MCU starts the operating state of the DC port to charge the device to be charged.
When a device to be charged is inserted into the USB port, the first controller U1 outputs a voltage of 5V, and at this time, the second triode Q2 starts to be turned on, and through the actions of the pull-up resistor (i.e., the seventeenth resistor R17) and the pull-down resistor (i.e., the eighteenth resistor R18), pin 3 of the controller MCU is at a high level, and when the controller MCU detects this level, the command of the operating state of the USB port is activated to charge the device to be charged.
In some embodiments, in order to improve the driving performance of the charge and discharge controller of the mobile power supply, a driving circuit (200, 300) can be arranged in the circuit. The driving circuits are the first driving circuit 200 and the second driving circuit 300.
The signal output terminal of the first driving circuit 200 is coupled to the USB device detection terminal of the charging insertion detection circuit 100.
The signal output terminal of the second driving circuit 300 is coupled to the DC device detection terminal of the charging insertion detection circuit 100.
When an external device is plugged into the charging port, the driving circuits (200, 300) respectively output high level signals to the USB device detection terminal and the DC device detection terminal of the charging plug-in detection circuit 100 to trigger the charging plug-in detection circuit 100 to make a charging instruction.
In some embodiments, the second driving circuit 300 further includes a voltage boosting circuit 301, and the voltage boosting circuit 301 is configured to stabilize a voltage value input to the charge insertion detection circuit 100.
Specifically, the output terminal of the voltage boost circuit 301 is coupled to the input terminal of the charge insertion detection circuit 100, and inputs the regulated voltage (+7.4V) to the charge insertion detection circuit 100 for the mobile power supply.
In some embodiments, in order to improve the signal processing response and processing capability of the mobile power supply charge and discharge controller, a microcontroller MCU may be disposed in the charge insertion detection circuit 100.
Specifically, the microcontroller MCU is provided with a USB device detection terminal (corresponding to 3 pins), a DC device detection terminal (corresponding to 7 pins), and an enable terminal (corresponding to 12 pins).
The DC device detection end of the microcontroller MCU is coupled to the output end of the boost circuit 101.
The output terminal of the voltage boost circuit 101 is also connected to the input terminal of the USB device detection circuit 102.
The voltage of the output of the voltage boost circuit 101 is input to the gate of the first fet VT1, so that the first fet VT1 is turned on, and forms a current loop with the DC pad (corresponding to J1) and the device, and the device starts to operate.
In some embodiments, the first driving circuit 102 includes a first transistor Q1, a second transistor Q2, and a second fet VT2, and the transistors and fets function as switches.
The first transistor Q1 is an NPN transistor, and the second transistor Q2 is a PNP transistor.
The base of the first triode Q1 is connected to the enable terminal (corresponding to the EN terminal) of the microcontroller MCU through a twelfth resistor R12.
The collector of the first transistor Q1 is commonly connected to the base of the second transistor Q1 and the gate of the second fet VT 2.
The collector of the second transistor Q2 is coupled to the USB device detection terminal (corresponding to pin 3) of the microcontroller MCU.
The voltage that microcontroller MCU output passes through twelfth resistance R12 input first triode Q1's base, and at this moment, first triode Q1 switches on, and then control second triode Q2 does not switch on to realize portable power source single port output charging current's function, just, DC seat (correspond J1) are preferred.
When the USB port is required to output voltage, the 2 nd pin of the microcontroller MCU is pressed for a short time, the high level is pulled to be low, the microcontroller MCU is started at the moment, the 6 th, 8 th and 11 th pins of the microcontroller MCU output the high level of PWM to push blue L ED to display the current electric quantity, and meanwhile, the 13 th pin outputs a low level of 200ms to the 5 th pin of the first controller U1, so that the first controller U1 starts to work and outputs a voltage of 5V for equipment on the USB to use.
In some embodiments, the charge insertion detection circuit 100 further includes a first resistor R1 and a second resistor R2, wherein the first resistor R1 is a pull-up resistor, and the second resistor R2 is a pull-down resistor R31.
Specifically, one end of the first resistor R1 is connected to the power supply terminal (5V), and the other end of the first resistor R1 is commonly connected to the detection terminal (corresponding to 4 pins) of the microcontroller MCU and one end of the second resistor R2.
The other end of the second resistor R2 is connected to the common terminal (GND).
Illustratively, when no external device is inserted into the charging wire, the 5V line has no voltage, and the 4 pins from the first resistor R1 to the microcontroller MCU are at low level, so that the microcontroller MCU cannot be started up;
when inserting the charging wire, under the effect of first resistance R1 and second resistance R2, at this moment, microcontroller MCU's 4 feet are the high level, and when microcontroller MCU detected the high level, immediately started the instruction of charged state.
In some embodiments, the DC device detecting circuit 101 further includes a first fet VT1, a first connector J1 (corresponding to a DC pad), an eighth resistor R8, a ninth resistor R9, and a tenth resistor R10.
The eighth resistor R8 and the ninth resistor R9 are pull-up resistors, and the tenth resistor R10 is a pull-down resistor.
Specifically, the gate of the first fet VT1 is coupled to the enable terminal (EN) of the microcontroller MCU,
the source of the first fet VT1 is connected to a power supply terminal (VDD terminal).
The drain of the first fet VT1 is coupled to the output terminal of the first connector J1 and one end of the eighth resistor R8.
An input terminal of the first connector J1 is connected to an output terminal of the second driving circuit 300, and the other terminal of the eighth resistor R8 is connected to one terminal of the ninth resistor R9.
The other end of the ninth resistor R9 is commonly connected with a DC device detection terminal (corresponding to pin 7) of the microcontroller MCU and one end of the tenth resistor R1, and the other end of the tenth resistor R10 is connected with a common terminal (GND terminal).
When the first connector J1 is plugged into the device, pin 7 of the microcontroller MCU receives a high level, and at this time, the microcontroller MCU is woken up to display the current battery level, and pin 12 outputs a high level to the second controller U2, the first fet VT1, and the first transistor Q1, respectively.
It should be noted that the microcontroller MCU enters the sleep low power state after 20 seconds when the DC and USB ports are not loaded.
While the embodiments of the present invention have been described with reference to the accompanying drawings, the present invention is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many modifications may be made by one skilled in the art without departing from the spirit and scope of the present invention as defined in the appended claims.
Claims (7)
1. A portable power source charge-discharge controller is characterized by comprising:
the charging insertion detection circuit is connected with the input end of the equipment to be charged and is used for detecting whether the equipment to be charged is connected with the circuit or not;
the charging insertion detection circuit comprises a DC equipment detection circuit and a USB equipment detection circuit;
the output end of the DC equipment detection circuit is coupled with the input end of the equipment to be charged;
the output end of the USB device detection circuit is coupled with the input end of the device to be charged;
a driving circuit, the output end of which is coupled to the input end of the charging insertion detection circuit, and outputs a level signal to the charging insertion detection circuit;
when the charging port of the charging insertion detection circuit is inserted into the device to be charged, the driving circuit inputs a high level to the charging insertion detection circuit, and the high level is used for driving the charging insertion detection circuit to send a charging starting instruction so as to charge the device to be charged.
2. The charge and discharge controller for a mobile power supply according to claim 1,
the driving circuit is set as a first driving circuit and a second driving circuit,
the signal output end of the first driving circuit is coupled to the USB equipment detection end of the charging insertion detection circuit;
the signal output end of the second driving circuit is coupled to the DC equipment detection end of the charging insertion detection circuit.
3. The mobile power supply charge-discharge controller according to claim 2,
the first driving circuit comprises a first triode and a second triode,
the base electrode of the first triode is connected with the enabling end of the microcontroller;
the collector of the first triode is connected with the base of the second triode;
and the collector electrode of the second triode is coupled with the USB equipment detection end of the microcontroller.
4. The mobile power supply charge-discharge controller according to claim 3,
the second driving circuit further includes a voltage boosting circuit, an output terminal of the voltage boosting circuit is coupled to an input terminal of the charging insertion detection circuit, and the voltage boosting circuit is used for stabilizing a voltage input to the charging insertion detection circuit.
5. The mobile power supply charge and discharge controller of claim 4,
the charge insertion detection circuit further comprises a microcontroller,
the DC equipment detection end of the microcontroller is coupled with the output end of the booster circuit.
6. The mobile power supply charge-discharge controller according to claim 5,
the charge insertion detection circuit further includes a first resistor and a second resistor,
one end of the first resistor is connected with a power supply end, and the other end of the first resistor is commonly connected with a detection end of the microcontroller and one end of the second resistor;
the other end of the second resistor is connected with a common end.
7. The mobile power supply charge-discharge controller according to claim 6,
the DC equipment detection circuit comprises a first field effect transistor, a first connector, an eighth resistor, a ninth resistor and a tenth resistor,
the grid electrode of the first field effect transistor is coupled to an enabling end of the microcontroller;
the source electrode of the first field effect transistor is connected with a power supply end;
the drain electrode of the first field effect transistor is coupled to the output end of the first connector and one end of the eighth resistor;
the input end of the first connector is connected with the output end of the second drive circuit;
the other end of the eighth resistor is connected with one end of the ninth resistor;
the other end of the ninth resistor is commonly connected with a DC equipment detection end of the microcontroller and one end of the tenth resistor;
the other end of the tenth resistor is connected to the common terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922156369.2U CN211209332U (en) | 2019-12-03 | 2019-12-03 | Portable power source charge-discharge controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922156369.2U CN211209332U (en) | 2019-12-03 | 2019-12-03 | Portable power source charge-discharge controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211209332U true CN211209332U (en) | 2020-08-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922156369.2U Active CN211209332U (en) | 2019-12-03 | 2019-12-03 | Portable power source charge-discharge controller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211209332U (en) |
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2019
- 2019-12-03 CN CN201922156369.2U patent/CN211209332U/en active Active
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