TWM527163U - Take power device - Google Patents

Description

Power take-off device

The present invention relates to a power take-off device, and more particularly to a power take-off device that converts a power output device for output for non-charging purposes.

It is known that fast charging specifications (such as QC2.0) are widely used in charging devices, including: a charging power supply that meets the fast charging specifications and a charged power source, such as a voltage source for generating 5 volts, 9 volts, or 12 Volt action power. The charging power source is, for example, a rechargeable battery of a mobile phone, and can receive the aforementioned voltages of 5 volts, 9 volts or 12 volts for charging. However, the products of the existing fast charging specifications are mostly limited to charging devices, and there are no other applications for non-charging purposes.

In addition, if the mobile power supply of the mobile phone is fully charged or temporarily not used, it will normally enter the sleep state after 8~15 seconds to save power or avoid overcharge. If it needs to be used again, it must be re-plugged to wake up the mobile power supply. Therefore, if it is applied to a consumer that requires continuous power supply, it will cause troubles as follows:

1. When the mobile power has entered the sleep state, once it is to be used again, it must be plugged and unplugged before it can wake up the power supply of the mobile power, causing inconvenience.

2. Even if it is re-plugged, if the power switch of the powered device is not turned on within 8~15 seconds, or if the power switch of the powered device is forgotten, the mobile power will still enter the sleep state. Once again, the re-plugging action is very inconvenient for users who have worn thick and warm clothing.

One of the objects of the present invention is to provide a power take-off device for non-charging applications that solves the problems of the prior art.

In some embodiments, the power take-off device of the present invention is electrically connected between a power output device and a power device that is not intended for charging. The power output device conforms to a fast charging specification and can output a plurality of fixed voltages and can output a predetermined voltage that meets the demand of the powered device. The power take-off device has a first connection interface, a second connection interface, and a processing circuit. The first connection interface is electrically connected to the power output device. The second connection interface electrically connects the powered device. Receiving, by the first connection interface, a control instruction of the electrical device to take the predetermined voltage, and requesting the power output device to output the predetermined voltage according to the control command, and determining that the output of the power output device meets the predetermined voltage And providing the predetermined voltage output to the power device through the second connection interface, and not outputting the predetermined voltage to the power device when determining that the power output device output does not meet the predetermined voltage.

In some embodiments, the electrical device to which the power take-off device is coupled is an electric heating device.

The present invention has at least the following effects: the user only needs to connect the power output device and the power device that meet the fast charging specification to the first connection interface and the second connection interface of the power take-off device, even if the power device needs different power requirements. The processing circuit of the power take-off device can also quickly input the appropriate power to the powered device according to the power demand of the powered device.

Before the present invention is described in detail, it should be noted that in the following description, similar elements are denoted by the same reference numerals.

Referring to FIG. 1 and FIG. 2, in an embodiment of the present invention, the power take-off system 100 includes a power take-off device 1 electrically connected to each other and a power-consuming device 3 not for charging purposes. The power taking device 1 is electrically connected between the power device 3 and a power output device 5. In this embodiment, the power take-off device 1 is an adapter, and the power output device 5 can be, but is not limited to, a mobile power source or an AC/DC converter plug that meets a fast charging specification (eg, QC2.0).

In this embodiment, the powered device 3 includes a first electric heating device 31 for 9 volts and a second electric heating device 32 for 12 volts. The power output device 5 can output one of a plurality of fixed voltages (e.g., 5 volts, 9 volts, or 12 volts) to meet the requirements of the powered device 3. That is, when the power output device 5 is connected to the first electric heating device 31 via the power taking device 1, the power output device 5 can output a first predetermined voltage that meets the requirements of the first electric heating device 31 according to the demand of the first electric heating device 31 ( 9 volts) is output to the first electric heating device 31. When the power output device 5 is connected to the second electric heating device 32 via the power taking device 1, the power output device 5 can output another second predetermined voltage that meets the demand of the second electric heating device 32 according to the demand of the second electric heating device 32. Volt is given to the second electric heating device 32. The first electric heating device 31 and the second electric heating device 32 may be, for example, electric heating clothes, electric heating blankets or electric heating shoes.

An embodiment of the power output device 5 is an AC to DC power converter 51 (such as an AC/DC converter plug) that meets a fast charging specification, and the power converter 51 can output a first predetermined voltage to the first electric heater. The device 31 outputs a second predetermined voltage to the second electric heating device 32. Another embodiment of the power output device 5 includes a rechargeable battery module 52 (eg, a mobile power source) that meets a fast charging specification, and the rechargeable battery module 52 can output a first predetermined voltage to the first electric heating device 31 and The second predetermined voltage is output to the second electric heating device 32.

Referring to FIG. 3 , and in conjunction with FIG. 2 , in an embodiment of the present invention, the power take-off device 1 has a processing circuit 10 , a first connection interface 11 , a second connection interface 12 , a prompt module 13 , and a sense of temperature The test module 14 and a voltage sensing module 15 are provided.

In this embodiment, the first connection interface 11 conforms to the universal serial busbar specification, has pins including 5V, D+, D-, and GND, and is used to electrically connect the power output device 5. The second connection interface 12 is electrically connected to the electrical device 3, and has a pin including +, - and S, and the second connection interface 12 can be connected to the electrical device 3 by a type of cable or a connector.

The processing circuit 10 includes a control unit 20, a step-down circuit 21, a power take-off module 22, a switch circuit 23, and a switch circuit 24. The control unit 20 is electrically connected to the prompt module 13 and the temperature sensing module 14. The voltage sensing module 15 , the step-down circuit 21 , the power take-off module 22 , the switching circuit 23 , and the switch circuit 24 .

The temperature sensing module 14 is configured to generate a temperature sensing signal for detecting the temperature of the power device 3, and when the control unit 20 determines that the temperature of the power device 3 is abnormal according to the temperature sensing signal, stop outputting the predetermined voltage to the power device. 3 and the prompting module 13 generates an abnormality indicating signal indicating a temperature abnormal state, for example, the LED is continuously blinking to remind the user to pay attention.

The switching circuit 23 is for manually switching to a high voltage and the transistor switching element MA1 is not turned on to set the output voltage to 9 volts, or is manually switched to ground and the transistor switching element MA1 is not turned on for 1 second to set the output voltage to 12 volts. The voltage sensing module 15 is configured to detect the output voltage Vcc of the power output device 5.

The control unit 20 first determines which voltage is set by the switching circuit 23, and then determines whether the output of the power output device 5 meets the safety range of the predetermined voltage according to the detection result of the voltage sensing module 15, and if it is a safe range that meets the predetermined voltage, for example, : The safe range of setting 9 volts is 8.5~9.5 volts, and the safe range of setting 12 volts is 11.5~12.5 volts, then the control unit 20 outputs a predetermined voltage to the powered device 3, and causes the prompting module 13 to generate a representative power take-off. The abnormality signal of the state, such as: the light-emitting diode maintains a constant light state. When the control unit 20 determines that the voltage of the electrical device 3 is abnormal according to the voltage sensing signal, that is, if the safety range is not met, the prompting module 13 generates an abnormality indicating signal indicating that the voltage is abnormal, for example, the LED is continuously blinking. To remind users to pay attention.

The step-down circuit 21 steps down the output voltage Vcc of the power output device 5 to 5 volts for use by the supply control unit 20, and the control unit 20 can select an 8-bit microprocessor.

The power take-off module 22 is connected between the control unit 20 and the first connection interface 11 , and the power take-off module 22 is used to obtain the power of the power output device 5 for use by the control unit 20 . In this embodiment, the power take-off module 22 has a voltage comparison circuit 61 and a switch circuit 62. The voltage comparison circuit 61 divides the voltage by the resistors R1 to R7 and uses the capacitors C4 to C6 as a filtering action and delays the charge and discharge time. The switch circuit 62 has a first switching element Q1 and a first transistor switching element MA1. The first switching element Q1 is used to drive the first transistor switching element MA1 for switching, and the resistors R9 and R10 are used for current limiting. When a pin 10A0 of the control unit 20 outputs a high potential, the first switching element Q1 and the first transistor switching element MA1 are turned on; when the pin IOA0 outputs a low potential, the first switching element Q1 and the first transistor switching element MA1 will be turned off.

The switch circuit 24 is connected between the control unit 20 and the second connection interface 12, and has a second switching element Q2 and a second transistor switching element MA2. The second switching element Q2 is used to drive the second transistor switching element MA1. For switching, resistors R11 and R12 are current limiting applications. The control unit 20 controls the switching circuit 24 to control whether or not to output a voltage to the powered device 3. When the other pin 10A1 of the control unit 20 outputs a high potential, the second switching element Q2 and the second transistor switching element MA2 are turned on; when the pin 10A1 outputs a low potential, the second switching element Q2 and the second transistor switch Element MA2 will be turned off.

Referring to FIG. 4, in another embodiment of the present invention, the processing circuit 10' also includes a control unit 20, a step-down circuit 21, a switching circuit 23, and a switch circuit 24. The control unit 20 is electrically connected to the prompt module 13 and senses temperature. The measurement module 14, the voltage sensing module 15, the step-down circuit 21, the switching circuit 23, and the switch circuit 24, the connection relationship between most of the components and components of FIG. 3 and FIG. 2 is similar, and FIG. 3 is different from that of FIG. The differences are explained below.

The power take-off module 22' has an integrated circuit of the drive controller 221 of the type E357 and a plurality of resistors R2, R3, and the drive controller 221 is coupled with the resistors R2 and R3 to achieve a predetermined voltage of 9 volts, and The drive controller 221 does not connect the resistor R2 but connects the resistor R3 to achieve a predetermined voltage of 12 volts.

In order to prevent the power output device 5 from entering the sleep mode, the processing circuit 10' further has a wake-up module 16 electrically connected to the control unit 20. The control unit 20 can also control the transistor switching element of the wake-up module 16 during the output voltage, and turn on for 0.1 second every predetermined time (eg, 8 seconds), so that the voltage Vcc of the power output device 5 reaches 100 mA to the grounded line. The current continues to pass to prevent the power output device 5 from entering the sleep mode.

The other anti-sleep mode is that the processing circuit 10' further includes a resistor R1 connected between a positive terminal (5V) and a ground terminal (GND) of the first connection interface 11, by matching the voltage Vcc The resistor R1 is connected across the electric terminal (5V) to the ground terminal (GND), and the power supply device 5 is continuously outputted with the power flowing continuously in a state where the current is continuously flowing.

The purpose of the anti-sleeping described above is to maintain the continuous power supply of the power output device 5 without entering the sleep state from the standby state, so that it is necessary to wake up the power output device 5 at intervals to continue the power supply to prevent the power output device 5 from entering the sleep state.

Referring to FIG. 5, and in conjunction with FIG. 4, the operating procedure of the new power system includes: setting a voltage according to the required voltage of the powered device 3 by the switching circuit 23 (step S101), for example, 9 volts causes the switching circuit 23 to switch to Switch to ground with a high voltage, or 12 volts. The power take-off system 100 is connected to the power output device 5 (step S102). When the connection is completed, the control unit 20 causes the light-emitting diode of the prompt module 13 to blink (step S103). Then, the control unit 20 determines whether the output voltage is the set voltage according to the voltage sensing module 15 (step S104). If so, the control unit 20 continues to detect whether the voltage is within the safe range (step S105). In this embodiment, 9 The safe range of volts is between 8.5 and 9.5 volts, and the safe range of 12 volts is between 11.5 and 12.5 volts. If the voltage is within the safe range, the control unit 20 causes the light-emitting diode of the cueing module 13 to be constantly lit, normally outputs a voltage (step S106), and enters the anti-sleep mode (step S107). Then, the control unit 20 detects whether the temperature exceeds the safe range according to the temperature detection result of the temperature sensing module 14 (step S108). The safety range of the embodiment is 50 degrees Celsius, and if the temperature does not exceed 50 degrees Celsius, the control is performed. The unit 20 keeps the light-emitting diode of the cueing module 13 constant and outputs a voltage normally (step S106). If the detected temperature exceeds 50 degrees Celsius, it indicates an abnormal condition, the control unit 20 causes the light-emitting diode of the prompting module 13 to continue to blink, and the control unit 20 causes the switching circuit 24 to turn off the output voltage (step S109).

Referring to FIG. 6 , the operation principle of another embodiment is similar to that of FIG. 4 , and has a temperature sensing module 14 , a voltage sensing module 15 , a wake-up module 16 , and a switching circuit 23 as shown in FIG. 4 . For example, a microprocessor 71 integrates the functions of the control unit 20 and the power take-off module 22', and has a step-down circuit 21', a programming connection interface 72, and a selection circuit 731 having a plurality of resistors. The circuit 21' is used to supply 3.3 volts to the microprocessor 71, between the selection circuit 731 and the microprocessor 71, and can be coupled to a reverse flow element 732 to avoid current reversal. The selection circuit 731 has a plurality of bias resistors R1, R3, R4, and R6, and the bias resistors R1, R3, R4, and R6 are used for the handshake between the microprocessor 71 and the power output device 5 to obtain The output voltage of the power output device 5. The programming connection interface 72 is connected to an external host (not shown) to burn data to the microprocessor 71, which is also applicable to the present invention.

In summary, the present invention has at least the following functions: the user only needs to connect the power output device 5 and the power device 3 that meet the fast charging specifications to the first connection interface 11 and the second connection interface 12 of the power take-off device 1, Even if the electrical equipment 3, such as the first electric heating device 31 and the second electric heating device 32, with different power requirements, the processing circuit 10 of the power receiving device 1 can quickly detect the power demand of the electric device 3 and output an appropriate one. The electric power is supplied to the electric equipment 3, so that the electric equipment 3 with different power requirements can be used for the power take-off device 1 of the present invention, and the function of abnormal voltage and the abnormal power interruption can make the overall application more safe, so it can Achieve the purpose of this new type.

However, the above is only the embodiment of the present invention, and when it is not possible to limit the scope of the present invention, all the simple equivalent changes and modifications according to the scope of the patent application and the contents of the patent specification are still This new patent covers the scope.

1‧‧‧Electrical device
10, 10' ‧ ‧ processing circuit
100‧‧‧Power taking system
11‧‧‧First connection interface
12‧‧‧Second connection interface
13‧‧‧Tips module
14‧‧‧Temperature Sensing Module
15‧‧‧Voltage Sensing Module
16‧‧‧Wake-up module
20‧‧‧Control unit
21, 21 '‧‧ ‧ step-down circuit
22, 22'‧‧‧ power take-off module
221‧‧‧Drive Controller
23‧‧‧Switching circuit
24‧‧‧Switch circuit
3‧‧‧Electrical equipment
31‧‧‧First electric heating device
32‧‧‧Second electric heating device
5‧‧‧Power output equipment
51‧‧‧Power Converter
52‧‧‧Rechargeable battery module
61‧‧‧Voltage comparison circuit
62‧‧‧Switch circuit
71‧‧‧Microprocessor
72‧‧‧ burning connection interface
731‧‧‧Selection circuit
732‧‧‧Reverse flow element
S101~S109‧‧‧Steps

Other features and effects of the present invention will be apparent from the following description of the drawings, wherein: Figure 1 is a schematic view of an embodiment of the power take-off device of the present invention; FIG. 3 is a circuit diagram of an embodiment of a processing circuit of the embodiment; FIG. 4 is a circuit diagram of another embodiment of the processing circuit of the embodiment; A flow chart of an embodiment of an operating procedure of an electrical system. Figure 6 is a circuit diagram showing still another embodiment of the processing circuit of the embodiment.

100‧‧‧Power taking system

1‧‧‧Electrical device

10‧‧‧Processing Circuit

11‧‧‧First connection interface

12‧‧‧Second connection interface

13‧‧‧Tips module

14‧‧‧Temperature Sensing Module

15‧‧‧Voltage Sensing Module

3‧‧‧Electrical equipment

31‧‧‧First electric heating device

32‧‧‧Second electric heating device

5‧‧‧Power output equipment

51‧‧‧Power Converter

52‧‧‧Rechargeable battery module

Claims (10)

A power taking device electrically connected between a power output device and a non-charging device for charging, the power output device conforming to a fast charging specification and capable of outputting a plurality of fixed voltages, and capable of outputting the requirements of the power device The predetermined voltage, the power take-off device includes: a first connection interface electrically connected to the power output device; a second connection interface electrically connecting the power device; and a processing circuit electrically connected to the first connection interface and The second connection interface, when the processing circuit detects that the first connection interface is connected to the power output device, the processing circuit outputs the predetermined voltage generated by the power output device to the power device through the second connection interface, and When it is determined that the output of the power output device does not meet the predetermined voltage, the predetermined voltage is not output to the power device. The power-receiving device of claim 1, further comprising: a temperature sensing module electrically connected to the processing circuit for generating a temperature sensing signal for detecting a temperature of the electrical device and for the processing circuit to determine whether If the temperature is abnormal, the predetermined voltage is not output to the electric device if the temperature is abnormal. The power take-off device of claim 1, further comprising: a prompting module electrically connected to the processing circuit, and when the processing circuit determines that the temperature or the output voltage of the power output device is abnormal, stopping outputting the predetermined voltage for the use The electrical device causes the prompting module to generate an abnormality prompt signal representing an abnormal state. The power take-off device of claim 1, further comprising: a voltage sensing module electrically connected between the processing circuit and the power output device for detecting an output voltage of the power output device and for processing The circuit determines whether the predetermined voltage is met. The power-receiving device of claim 4, wherein the processing circuit comprises a control unit, a power-receiving module, a switching circuit and a switching circuit, wherein the power-taking module is connected to the control unit and the first connection Between the interfaces, the power source of the power output device is used for the control unit; the switching circuit is configured to set the predetermined voltage; the switch circuit is connected between the control unit and the second connection interface; the control unit is electrically Connecting the voltage sensing module and the switching circuit, and the control unit determines the predetermined voltage set by the switching circuit, and then determining, according to the detection result of the voltage sensing module, whether the output voltage of the power output device meets the predetermined The safety range of the voltage, if it is a safe range that meets the predetermined voltage, the control unit outputs the predetermined voltage to the powered device. The power-receiving device of claim 5, wherein the processing circuit further comprises a resistor connected between a positive terminal and a ground terminal of the first connection interface to wake up the power output device to continuously output power and avoid the The power output device enters sleep mode. The power-receiving device of claim 5, wherein the processing circuit further comprises a wake-up module electrically connected to the control unit, wherein the control unit controls a switching component of the wake-up module every predetermined time during an output voltage Then, the current is continuously passed to wake up the power output device to continuously output power and prevent the power output device from entering the sleep mode. The power take-off device of claim 5, wherein the power take-off module has a plurality of bias resistors, and the bias resistors are used for the power output device to perform the handshake to obtain the output of the power output device. Voltage. The power take-off device of any one of claims 1 to 8, wherein the power take-off device is an adapter, and the first connection interface is a universal sequence bus interface. The power take-off device according to any one of claims 1 to 8, wherein the power-on device that is connected is an electric heating device.