Patent ID: 12220799

DETAILED DESCRIPTION

In the present disclosure, numerous specific details are provided, to provide a thorough understanding of embodiments of the disclosure. Persons of ordinary skill in the art will recognize, however, that the present disclosure can be practiced without one or more of the specific details. In other instances, well-known details are not shown or described to avoid obscuring aspects of the present disclosure. Now please refer to the figures for the explanation of the technical content and the detailed description of the present disclosure:

FIG.1shows a circuit block diagram of the power control circuit10of the present disclosure. A power control circuit10of the present disclosure is applied to a power supply apparatus20(for example, a battery) and an electronic circuit40(for example, an electric-powered nailing gun circuit). The power control circuit10includes a non-locked power switch163, a capacitor104, a power connection unit106, a power converter108, a self-hold control unit110, a discharging unit114and a microcontroller130. The power connection unit106includes a connection-side transistor switch120, a connection-side first resistor122, a connection-side second resistor124, a connection-side diode126and a connection-side third resistor128. The self-hold control unit110includes a control-side transistor switch132and a control-side diode134. The discharging unit114includes a discharging-side diode116and a discharging-side resistor118. The aforementioned elements are electrically connected to each other. In the present disclosure, the non-locked power switch163refers to a switch that: when a user's hand presses the non-locked power switch163, the non-locked power switch163will be short-circuited and turned on; but when the user's hand leaves the non-locked power switch163, the non-locked power switch163will pop up and be turned off.

Moreover, when the non-locked power switch163is grounded and the capacitor104is not fully charged, the capacitor104is charged by the power supply apparatus20through the power connection unit106, and the power converter108is powered by the power supply apparatus20through the power connection unit106, so that the power converter108drives the self-hold control unit110to be turned on. When the self-hold control unit110is turned on, the power converter108is powered by the power supply apparatus20through the power connection unit106. In the present disclosure, the non-locked power switch163being grounded means that the non-locked power switch163is pressed or abnormally stuck or faulty, so that the non-locked power switch163is grounded.

More specifically, the connection-side first resistor122and the connection-side third resistor128are configured to form a parallel resistor circuit. The parallel resistor circuit, the connection-side second resistor124and the connection-side diode126are configured to form a capacitor charging path. The parallel resistor circuit, the connection-side second resistor124, the control-side diode134and the control-side transistor switch132are configured to form a power-receiving starting path. By properly designing the values/specifications of the above-mentioned elements shown inFIG.1, when the non-locked power switch163is grounded and the capacitor104is not yet fully charged, the capacitor104is charged by the power supply apparatus20through the capacitor charging path, and simultaneously the connection-side transistor switch120is turned on by a voltage difference of the parallel resistor circuit, so that the power converter108is powered by the power supply apparatus20through the connection-side transistor switch120to drive the power converter108, so that the power converter108turns on the control-side transistor switch132through the microcontroller130(for example, the microcontroller130sends a high signal to the control-side transistor switch132to turn on the control-side transistor switch132).

Continuing with the above, when the control-side transistor switch132is turned on, the power-receiving starting path is turned on, and the connection-side transistor switch120is turned on by the voltage difference of the parallel resistor circuit, so that the power converter108is powered by the power supply apparatus20through the connection-side transistor switch120, so that the power converter108supplies power to the electronic circuit40to drive the electronic circuit40, and the power converter108still continues to turn on the control-side transistor switch132through the microcontroller130, so as to continuously turn on the connection-side transistor switch120so that the power converter108continues to be powered by the power supply apparatus20through the connection-side transistor switch120.

Continuing with the above, at this time, since the non-locked power switch163is grounded for a long enough time (for example, the non-locked power switch163is pressed long enough), the capacitor104is fully charged, so that the capacitor104stops being charged by the power supply apparatus20through the capacitor charging path; at this time, if the non-locked power switch163stops being pressed, namely, when the non-locked power switch163stops being grounded, the capacitor104will discharge through the discharging-side diode116and the discharging-side resistor118.

Continuing with the above, when the power control circuit10or the electronic circuit40is not used for more than a predetermined time (for example, 5 minutes), the power control circuit10or the electronic circuit40intends to enter a sleep mode to save power, so that the power converter108turns off the control-side transistor switch132through the microcontroller130(for example, the microcontroller130sends a low signal to the control-side transistor switch132to turn off the control-side transistor switch132) to turn off the power-receiving starting path, so that the connection-side transistor switch120is turned off and the power converter108stops being powered by the power supply apparatus20through the connection-side transistor switch120, so as to save energy; it should be noted that at this time the non-locked power switch163stops being pressed, so the connection-side transistor switch120cannot be turned on by the voltage difference of the parallel resistor circuit of the capacitor charging path.

When the non-locked power switch163is grounded and the capacitor104is fully charged and the self-hold control unit110is controlled to be turned off, the capacitor104stops being charged by the power supply apparatus20through the power connection unit106and the power control circuit10enters the sleep mode.

In more detail, even if the non-locked power switch163is continuously grounded due to being pressed or abnormally stuck or faulty, the capacitor104will turn off the capacitor charging path because the capacitor104is fully charged; the connection-side transistor switch120cannot be turned on by the voltage difference of the parallel resistor circuit of the capacitor charging path; at this time, if the power control circuit10or the electronic circuit40intends to enter the sleep mode, the control-side transistor switch132of the self-hold control unit110will be controlled to be turned off, so that the connection-side transistor switch120cannot be turned on by the voltage difference of the parallel resistor circuit of the power-receiving starting path, so the power control circuit10or the electronic circuit40can successfully enter the sleep mode to save energy.

However, a related art power control circuit does not have the capacitor104at least, so if the non-locked power switch163is pressed or abnormally stuck or faulty and continuously grounded, the capacitor charging path will be continuously turned on; at this time, if the power control circuit10or the electronic circuit40intends to enter the sleep mode, even if the control-side transistor switch132of the self-hold control unit110is controlled to be turned off and thus the connection-side transistor switch120cannot be turned on by the voltage difference of the parallel resistor circuit of the power-receiving starting path, the connection-side transistor switch120can be turned on by the voltage difference of the parallel resistor circuit of the capacitor charging path, so the power control circuit10or the electronic circuit40or the power converter108will continue to be powered by the power supply apparatus20through the connection-side transistor switch120to waste power.

Furthermore, please refer toFIG.1again. One end of the non-locked power switch163is grounded; the other end of the non-locked power switch163is connected to one end of the discharging-side resistor118and one end of the capacitor104; the other end of the capacitor104is connected to an anode of the discharging-side diode116and a cathode of the connection-side diode126; the power supply apparatus20is connected to a first end of the connection-side transistor switch120, one end of the connection-side first resistor122, one end of the connection-side third resistor128, a cathode of the discharging-side diode116and the other end of the discharging-side resistor118; a second end of the connection-side transistor switch120is connected to the power converter108; a third end of the connection-side transistor switch120is connected to one end of the connection-side second resistor124, the other end of the connection-side first resistor122and the other end of the connection-side third resistor128; the other end of the connection-side second resistor124is connected to an anode of the connection-side diode126and an anode of the control-side diode134; a cathode of the control-side diode134is connected to a first end of the control-side transistor switch132; a second end of the control-side transistor switch132is grounded; a third end of the control-side transistor switch132is connected to the microcontroller130.

FIG.2shows a circuit block diagram of the electric-powered nailing gun apparatus30of the present disclosure. The descriptions of the elements shown inFIG.2which are the same as the elements shown inFIG.1are not repeated here for brevity. The difference betweenFIG.2andFIG.1is that the electric-powered nailing gun apparatus30ofFIG.2includes all the components of the power control circuit10ofFIG.1, and the electric-powered nailing gun apparatus30ofFIG.2further includes an electric-powered nailing gun circuit136which is electrically connected to the power converter108and which is used to replace the electronic circuit40ofFIG.1.

Moreover,FIG.3-1shows a block diagram of the first embodiment of the electric-powered nailing gun circuit136ofFIG.2of the present disclosure. The electric-powered nailing gun circuit136includes a first microcontroller138, a second microcontroller140, a human-machine interface142, a driving circuit144, a toggle switch circuit146, a motor148, a motor current first detection circuit150, a motor current second detection circuit152, an electric-powered nailing gun striker switch detection circuit154, a safety switch detection circuit156, a trigger switch detection circuit158and a battery voltage detection circuit160. The first microcontroller138is electrically connected to the power converter108; the second microcontroller140is electrically connected to the first microcontroller138; the human-machine interface142is electrically connected to the second microcontroller140and the power converter108; the driving circuit144is electrically connected to the power converter108; the toggle switch circuit146is electrically connected to the driving circuit144and the power supply device20; the motor148is electrically connected to the toggle switch circuit146; the motor current first detection circuit150is electrically connected to the first microcontroller138and the motor148; the motor current second detection circuit152is electrically connected to the second microcontroller140, the motor148and the motor current first detection circuit150; the electric-powered nailing gun striker switch detection circuit154is electrically connected to the first microcontroller138and the second microcontroller140; the safety switch detection circuit156is electrically connected to the first microcontroller138and the second microcontroller140; the trigger switch detection circuit158is electrically connected to the first microcontroller138and the second microcontroller140; the battery voltage detection circuit160is electrically connected to the first microcontroller138, the second microcontroller140and the power supply device20. In the embodiment ofFIG.3-1, the non-locked power switch163(as shown inFIG.1andFIG.2) of the power control circuit10(the electric-powered nailing gun apparatus30) is integrated into the human-machine interface142; namely, the human-machine interface142may be one kind of the non-locked power switch163, and is operated by the user, and is electrically connected to the power control circuit10.

Moreover,FIG.3-2shows a block diagram of the second embodiment of the electric-powered nailing gun circuit136ofFIG.2of the present disclosure. The descriptions of the elements shown inFIG.3-2which are the same as the elements shown inFIG.3-1are not repeated here for brevity. In the embodiment ofFIG.3-2, the non-locked power switch163(as shown inFIG.1andFIG.2) of the power control circuit10(the electric-powered nailing gun apparatus30) is integrated into a safety switch164as shown inFIG.4; namely, the safety switch164is actuated by a safety apparatus166as shown inFIG.4; the safety switch164may also be one kind of the non-locked power switch163; after the safety switch164is electrically connected to the safety switch detection circuit156ofFIG.3, then the safety switch164is electrically connected to the power control circuit10(the power converter108).

Moreover,FIG.4shows a perspective view of the electric-powered nailing gun apparatus30ofFIG.2of the present disclosure. The electric-powered nailing gun apparatus30further includes a trigger switch162, the safety switch164and the safety apparatus166. The trigger switch162is electrically connected to the trigger switch detection circuit158ofFIG.3. The safety switch164is actuated by the safety apparatus166and is electrically connected to the safety switch detection circuit156ofFIG.3.

The advantage of the present disclosure is to prevent the power control circuit or the electric-powered nailing gun apparatus from being unable to sleep due to the continuous grounding of the non-locked power switch (for example, the abnormal jamming or failure) and wasting power.

Although the present disclosure has been described with reference to the embodiment thereof, it will be understood that the disclosure is not limited to the details thereof. Various substitutions and modifications have been suggested in the foregoing description, and others will occur to those of ordinary skill in the art. Therefore, all such substitutions and modifications are intended to be embraced within the scope of the disclosure as defined in the appended claims.