Power station inspection robot charging circuit

Abstract

The utility model discloses a power station inspection robot charging circuit, which relates to the technical field of robots and comprises an electric quantity detection circuit, a battery interface, a control module, a charging control circuit, a power supply processing circuit, a power supply interface and a first voltage stabilizing circuit. When the battery is charged, the control module controls the charging control circuit to be electrified, the charging control circuit connects the first electrode of the power interface with the first input end of the power processing circuit, and the battery starts to be charged. When the control module detects that the battery is fully charged through the electric quantity detection circuit, the control module controls the charging control circuit to be powered off, the charging control circuit disconnects the first electrode of the power interface from the first input end of the power processing circuit, and charging of the battery is stopped. The electric quantity detection circuit is adopted to monitor the electric quantity of the battery in real time, the first voltage stabilizing circuit is adopted to stabilize the charging voltage of the battery, and the conditions of battery overshoot and unstable charging voltage are prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of robots, in particular to a charging circuit for a power station inspection robot. Background Art

[0002] The replacement of manual services by robots can reduce people's labor and bring great convenience to people. Currently, the power source of mobile service robots mainly relies on rechargeable batteries, and rechargeable batteries need to be charged when the battery power is low or completely out of power.

[0003] When charging a robot, if the voltage is unstable, it may damage the charging circuit and the battery, and also reduce the service life of the battery; when the battery is fully charged, if there is no power monitoring and the power supply is not turned off in time, there may be potential safety hazards. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a charging circuit for a power station inspection robot, which uses a power detection circuit to monitor the battery power in real time and a first voltage stabilization circuit to stabilize the charging voltage of the battery, preventing overcharging of the battery and unstable charging voltage.

[0005] To solve the above technical problems, the utility model adopts the following technical solutions:

[0006] One aspect of the embodiment of the utility model provides a charging circuit for a power station inspection robot. The charging circuit includes: a power detection circuit and a battery interface. The input end of the power detection circuit is connected to the positive electrode of the battery interface, and the negative electrode of the battery interface is grounded; a control module, a charging control circuit, a power supply processing circuit and a power supply interface. The control module is respectively connected to the signal output end of the power detection circuit and the control end of the charging control circuit. The charging control circuit is respectively connected to the first electrode of the power supply interface and the first input end of the power supply processing circuit. The second input end of the power supply processing circuit is connected to the second electrode of the power supply interface; a first voltage stabilization circuit. The output end of the power supply processing circuit is connected to the input end of the first voltage stabilization circuit, and the output end of the first voltage stabilization circuit is connected to the positive electrode of the battery interface; when the battery is charging, the control module connects the first electrode of the power supply interface to the first input end of the power supply processing circuit through the charging control circuit; when the control module detects that the battery is fully charged through the power detection circuit, the control module disconnects the first electrode of the power supply interface from the first input end of the power supply processing circuit through the charging control circuit.

[0007] In some embodiments, the power detection circuit includes a first resistor and a second resistor. One end of the first resistor is grounded, and the other end of the first resistor is connected to one end of the second resistor and the control module. The other end of the second resistor is connected to the positive pole of the battery interface.

[0008] In some embodiments, the charging control circuit includes a relay, a first NPN transistor, and a third resistor. The first end of the contactor of the relay is connected to the first electrode of the power supply interface. The second end of the contactor of the relay is connected to the first input end of the power supply processing circuit. The first end of the coil terminal of the relay is connected to a first power supply. The second end of the coil terminal of the relay is connected to the collector of the first NPN transistor. The emitter of the first NPN transistor is grounded through the third resistor. The base of the first NPN transistor is connected to the control module.

[0009] In some embodiments, the first voltage regulation circuit includes a second NPN transistor, a first voltage regulation diode, and a fourth resistor. The collector of the second NPN transistor is connected to the output end of the power supply processing circuit and one end of the fourth resistor. The base of the second NPN transistor is connected to the other end of the fourth resistor and the negative pole of the first voltage regulation diode. The positive pole of the first voltage regulation diode is grounded. The emitter of the second NPN transistor is connected to the positive pole of the battery interface.

[0010] In some embodiments, the power supply processing circuit includes a transformer, a rectifier bridge, a fifth resistor, and a capacitor. The first end of the primary coil of the transformer is connected to the first electrode of the power supply interface through the charging control circuit. The second end of the primary coil of the transformer is connected to the second electrode of the power supply interface. The first end of the secondary coil of the transformer is connected to the first input end of the rectifier bridge. The second end of the secondary coil of the transformer is connected to the second input end of the rectifier bridge. The positive output end of the rectifier bridge is connected to one end of the fifth resistor. The negative output end of the rectifier bridge is used as the ground point. The other end of the fifth resistor is connected to one end of the capacitor and the input end of the first voltage regulation circuit. The other end of the capacitor is grounded.

[0011] In some embodiments, the charging circuit further includes a second voltage regulation circuit. The second voltage regulation circuit is disposed between the first voltage regulation circuit and the battery interface. The second voltage regulation circuit includes a voltage detection circuit and a voltage regulation circuit. The detection input end of the voltage detection circuit is connected to the output end of the first voltage regulation circuit. The detection output end of the voltage detection circuit is connected to the control module. The input end of the voltage regulation circuit is connected to the output end of the first voltage regulation circuit. The output end of the voltage regulation circuit is connected to the positive pole of the battery interface. The control end of the voltage regulation circuit is connected to the control module.

[0012] In some embodiments, the voltage regulation circuit includes a PMOS transistor and a sixth resistor. The source of the PMOS transistor is connected to one end of the sixth resistor, the detection input terminal of the voltage detection circuit, and the output terminal of the first voltage regulation circuit. The gate of the PMOS transistor is connected to the other end of the sixth resistor and the control module. The drain of the PMOS transistor is connected to the positive pole of the battery interface.

[0013] In some embodiments, the voltage regulation circuit further includes an optocoupler. The input terminal of the light-emitting end of the optocoupler is connected to a second power supply. The output terminal of the light-emitting end of the optocoupler is connected to the control module. The input terminal of the light-receiving end of the optocoupler is connected to the gate of the PMOS transistor and the other end of the sixth resistor. The output terminal of the light-receiving end of the optocoupler is grounded.

[0014] In some embodiments, the voltage regulation circuit further includes a second zener diode and a seventh resistor. The negative pole of the second zener diode is connected to the drain of the PMOS transistor and the positive pole of the battery interface. The positive pole of the second zener diode is connected to one end of the seventh resistor and the input terminal of the light-receiving end of the optocoupler. The other end of the seventh resistor is grounded.

[0015] In some embodiments, the voltage detection circuit includes an eighth resistor and a ninth resistor. One end of the ninth resistor is connected to the output terminal of the first voltage regulation circuit. The other end of the ninth resistor is connected to one end of the eighth resistor and the control module. The other end of the eighth resistor is grounded.

[0016] A charging circuit for a power station inspection robot according to an embodiment of the present invention has at least the following beneficial effects: The present application provides a power detection circuit to monitor the power of the battery in real time. When the battery is fully charged, the control module turns off the charging power supply through the charging control circuit, preventing overcharging of the battery. The present application provides a first voltage regulation circuit and a second voltage regulation circuit to regulate the charging voltage of the battery, preventing unstable charging voltage.

[0017] It should be understood that the above general description and the following detailed description are only exemplary and do not limit the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0019] Figure 1 It is a schematic diagram of the charging circuit according to the embodiment.

[0020] The description of the reference numerals is as follows: 1. Electric quantity detection circuit; 2. Charging control circuit; 3. Power supply processing circuit; 4. First voltage stabilizing circuit; 5. Second voltage stabilizing circuit. Specific embodiments

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0022] The terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second", and "third" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, the meaning of "plurality" is two or more.

[0023] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "connected" and "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0024] Now, example embodiments will be described more fully with reference to the accompanying drawings. However, the example embodiments can be implemented in various forms and should not be construed as limited to the examples set forth herein; rather, these example embodiments are provided so that this disclosure will be more comprehensive and complete, and will fully convey the concept of the example embodiments to those skilled in the art. The drawings are only schematic illustrations of the present disclosure and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and thus their repeated description will be omitted.

[0025] Next, the technical solutions of the embodiments of the present application will be briefly described:

[0026] According to some embodiments, such as Figure 1As shown in the figure, the present application provides a charging circuit for a power station inspection robot. The charging circuit includes: a power quantity detection circuit 1, a battery interface CN22, a control module, a charging control circuit 2, a power supply processing circuit 3, a power supply interface CN22, and a first voltage stabilization circuit 4. The connection structure is as follows:

[0027] The input end of the power quantity detection circuit 1 is connected to the positive pole of the battery interface CN22, and the negative pole of the battery interface CN22 is grounded;

[0028] The control module is respectively connected to the signal output end of the power quantity detection circuit 1 and the control end of the charging control circuit 2. The charging control circuit 2 is respectively connected to the first electrode of the power supply interface CN21 and the first input end of the power supply processing circuit 3. The second input end of the power supply processing circuit 3 is connected to the second electrode of the power supply interface CN21;

[0029] The output end of the power supply processing circuit 3 is connected to the input end of the first voltage stabilization circuit 4, and the output end of the first voltage stabilization circuit 4 is connected to the positive pole of the battery interface CN22;

[0030] Based on the working principle of the above embodiment, when the battery is charging, the control module controls the charging control circuit 2 to be powered on. The charging control circuit 2 connects the first electrode of the power supply interface CN21 to the first input end of the power supply processing circuit 3, and the battery starts charging.

[0031] When the control module detects that the battery is fully charged through the power quantity detection circuit 1, the control module controls the charging control circuit 2 to be powered off. The charging control circuit 2 disconnects the first electrode of the power supply interface CN21 from the first input end of the power supply processing circuit 3, and the battery stops charging.

[0032] The following further elaborates on the preferred embodiments of the present disclosure in conjunction with the appended Figure 1 drawings of this specification.

[0033] According to some embodiments, as Figure 1 shown, the power quantity detection circuit 1 includes a first resistor R1 and a second resistor R2. One end of the first resistor R1 is grounded, the other end of the first resistor R1 is connected to one end of the second resistor R2 and the control module, and the other end of the second resistor R2 is connected to the positive pole of the battery interface CN21.

[0034] Among them, the first resistor R1 and the second resistor R2 are used for voltage division.

[0035] Specifically, as Figure 1 shown, the power quantity detection circuit 1 further includes a resistor R10. The resistor R10 is arranged between the second resistor R2 and the positive pole of the battery interface CN22. The resistor R10 is used for voltage division. Increasing the resistor R10 can make the voltage between the first resistor R1 and the second resistor R2 lower.

[0036] According to some embodiments, as Figure 1 shown, the charging control circuit 2 includes a relay K, a first NPN transistor Q1, and a third resistor R3. The first end of the contactor of the relay K is connected to the first electrode of the power supply interface CN21. The second end of the contactor of the relay K is connected to the first input end of the power supply processing circuit 3. The first end of the coil terminal of the relay K is connected to the first power supply V1. The second end of the coil terminal of the relay K is connected to the collector of the first NPN transistor Q1. The emitter of the first NPN transistor Q1 is grounded through the third resistor R3. The base of the first NPN transistor Q1 is connected to the control module.

[0037] Based on the working principle of the above embodiments, when charging is required, the control module outputs a high-level signal 100 to the base of the first NPN transistor Q1. The first NPN transistor Q1 conducts, the relay K is attracted, the primary coil of the transformer T is connected to the mains power supply, and the battery starts charging.

[0038] When the battery is fully charged, the control module outputs a low-level signal 100 to the base of the first NPN transistor Q1. The first NPN transistor Q1 is cut off, the relay K is disconnected, the primary coil of the transformer T is de-energized, and the battery stops charging.

[0039] Specifically, the charging control circuit 2 further includes a diode D. The positive electrode of the diode D is connected to the second end of the coil terminal of the relay K and the collector of the first NPN transistor Q1. The negative electrode of the diode D is connected to the first end of the coil terminal of the relay K. When the coil terminal of the relay K is de-energized, freewheeling occurs through the diode D.

[0040] According to some embodiments, as Figure 1 shown, the first voltage stabilizing circuit 4 includes a second NPN transistor Q2, a first voltage stabilizing diode DZ1, and a fourth resistor R4. The collector of the second NPN transistor Q2 is connected to the output end of the power supply processing circuit 3 and one end of the fourth resistor R4. The base of the second NPN transistor Q2 is connected to the other end of the fourth resistor R4 and the negative electrode of the first voltage stabilizing diode DZ1. The positive electrode of the first voltage stabilizing diode DZ1 is grounded. The emitter of the second NPN transistor Q2 is connected to the positive electrode of the battery interface CN22.

[0041] According to some embodiments, as Figure 1As shown, the power processing circuit 3 includes a transformer T, a rectifier bridge DB, a fifth resistor R5, and a capacitor C. The first end of the primary coil of the transformer T is connected to the first electrode of the power interface CN21 through the charging control circuit 2, and the second end of the primary coil of the transformer T is connected to the second electrode of the power interface CN21. The first end of the secondary coil of the transformer T is connected to the first input terminal of the rectifier bridge DB, and the second end of the secondary coil of the transformer T is connected to the second input terminal of the rectifier bridge DB. The positive output terminal of the rectifier bridge DB is connected to one end of the fifth resistor R5, the negative output terminal of the rectifier bridge DB is used as the ground, the other end of the fifth resistor R5 is connected to one end of the capacitor C and the input terminal of the first voltage regulation circuit 4, and the other end of the capacitor C is grounded.

[0042] According to some embodiments, as Figure 1 shown, the charging circuit further includes a second voltage regulation circuit 5. The second voltage regulation circuit 5 is disposed between the first voltage regulation circuit 4 and the battery interface CN22. The second voltage regulation circuit 5 includes a voltage detection circuit and a voltage regulation circuit. The detection input terminal of the voltage detection circuit is connected to the output terminal of the first voltage regulation circuit 4, the detection output terminal of the voltage detection circuit is connected to the control module, the input terminal of the voltage regulation circuit is connected to the output terminal of the first voltage regulation circuit 4, the output terminal of the voltage regulation circuit is connected to the positive electrode of the battery interface CN22, and the control terminal of the voltage regulation circuit is connected to the control module.

[0043] Further, as Figure 1 shown, the voltage regulation circuit includes a PMOS transistor Q3 and a sixth resistor R6. The source electrode of the PMOS transistor Q3 is connected to one end of the sixth resistor R6, the detection input terminal of the voltage detection circuit, and the output terminal of the first voltage regulation circuit 4. The gate electrode of the PMOS transistor Q3 is connected to the other end of the sixth resistor R6 and the control module. The drain electrode of the PMOS transistor Q3 is connected to the positive electrode of the battery interface CN22.

[0044] Further, as Figure 1 shown, the voltage regulation circuit further includes an optocoupler U. The input terminal of the light-emitting end of the optocoupler U is connected to the second power supply V2, the output terminal of the light-emitting end of the optocoupler U is connected to the control module, the input terminal of the light-receiving end of the optocoupler U is connected to the gate electrode of the PMOS transistor Q3 and the other end of the sixth resistor R6, and the output terminal of the light-receiving end of the optocoupler U is grounded.

[0045] Further, as Figure 1 shown, the voltage regulation circuit further includes a second zener diode DZ2 and a seventh resistor R7. The negative electrode of the second zener diode DZ2 is connected to the drain electrode of the PMOS transistor Q3 and the positive electrode of the battery interface CN22. The positive electrode of the second zener diode DZ2 is connected to one end of the seventh resistor R7 and the input terminal of the light-receiving end of the optocoupler U. The other end of the seventh resistor R7 is grounded.

[0046] Further, as Figure 1As shown, the voltage detection circuit includes an eighth resistor R8 and a ninth resistor R9. One end of the ninth resistor R9 is connected to the output terminal of the first voltage stabilizing circuit 4, the other end of the ninth resistor R9 is connected to one end of the eighth resistor R8 and the control module, and the other end of the eighth resistor R8 is grounded.

[0047] The working principle of this application is as follows: When the battery is charging, the control module detects the battery power through the second resistor R2 and the resistor R10. If the battery is not fully charged, the control module outputs a high level of 100 to the base of the first NPN transistor Q1, and the first NPN transistor Q1 conducts. The relay K closes, the transformer T is powered on, and the battery starts charging. During charging, the control module detects the voltage output from the emitter of the second NPN transistor Q2 through the ninth resistor R9 and the resistor R11. If the emitter voltage of the second NPN transistor Q2 is normal, the control module controls the optocoupler U to conduct, the gate of the PMOS transistor Q3 is grounded through the optocoupler U, and the PMOS transistor Q3 conducts, and the battery charges normally. If the emitter voltage of the second NPN transistor Q2 is too high, the control module controls the optocoupler U to reduce the opening degree, so that the resistance value of the light-receiving end of the optocoupler U increases, the gate voltage of the PMOS transistor Q3 increases, and the output of the PMOS transistor Q3 decreases.

[0048] When the battery is fully charged, the control module detects that the battery power is fully charged through the second resistor R2 and the resistor R10. The control module outputs a low-level signal of 100 to the base of the first NPN transistor Q1, the first NPN transistor Q1 is cut off, the relay K is disconnected, the transformer T is not powered on, and the battery stops charging.

[0049] In the description of the above embodiments, specific features, structures, materials, or characteristics may be combined in a suitable manner in any one or more embodiments or examples.

[0050] Although the present disclosure has been described with reference to several exemplary embodiments, it should be understood that the terms used are illustrative and exemplary, rather than restrictive. Since the present disclosure can be embodied in many forms without departing from the spirit or essence of the present application, it should be understood that the above embodiments are not limited to any of the foregoing details, but should be broadly construed within the spirit and scope defined by the appended claims. Therefore, all changes and modifications falling within the scope of the claims or their equivalents should be covered by the appended claims.

Claims

1. A charging circuit for a power station inspection robot, characterized in that: The charging circuit comprises: A power detection circuit and a battery interface, wherein the input end of the power detection circuit is connected to the positive electrode of the battery interface, and the negative electrode of the battery interface is grounded; A control module, a charging control circuit, a power processing circuit and a power interface, wherein the control module is respectively connected to the signal output end of the power detection circuit and the control end of the charging control circuit, the charging control circuit is respectively connected to the first electrode of the power interface and the first input end of the power processing circuit, and the second input end of the power processing circuit is connected to the second electrode of the power interface; A first voltage stabilizing circuit, wherein the output end of the power processing circuit is connected to the input end of the first voltage stabilizing circuit, and the output end of the first voltage stabilizing circuit is connected to the positive electrode of the battery interface; When the battery is charged, the control module connects the first electrode of the power interface to the first input terminal of the power processing circuit through the charging control circuit; When the control module detects that the battery is fully charged through the power detection circuit, the control module disconnects the first electrode of the power interface from the first input end of the power processing circuit through the charging control circuit.

2. The charging circuit according to claim 1, characterized in that: The power detection circuit includes a first resistor and a second resistor, one end of the first resistor is grounded, the other end of the first resistor is connected to one end of the second resistor and the control module, and the other end of the second resistor is connected to the positive electrode of the battery interface.

3. The charging circuit according to claim 1, characterized in that: The charging control circuit includes a relay, a first NPN transistor and a third resistor, the first end of the contactor of the relay is connected to the first electrode of the power interface, the second end of the contactor of the relay is connected to the first input end of the power processing circuit, the first end of the coil end of the relay is connected to the first power supply, the second end of the coil end of the relay is connected to the collector of the first NPN transistor, the emitter of the first NPN transistor is grounded through the third resistor, and the base of the first NPN transistor is connected to the control module.

4. The charging circuit according to claim 1, characterized in that: The first voltage stabilizing circuit includes a second NPN transistor, a first voltage stabilizing diode and a fourth resistor, the collector of the second NPN transistor is connected to the output end of the power processing circuit and one end of the fourth resistor, the base of the second NPN transistor is connected to the other end of the fourth resistor and the cathode of the first voltage stabilizing diode, the anode of the first voltage stabilizing diode is grounded, and the emitter of the second NPN transistor is connected to the anode of the battery interface.

5. The charging circuit according to claim 1, characterized in that: The power processing circuit includes a transformer, a rectifier bridge, a fifth resistor and a capacitor. The first end of the primary coil of the transformer is connected to the first electrode of the power interface through the charging control circuit, the second end of the primary coil of the transformer is connected to the second electrode of the power interface, the first end of the secondary coil of the transformer is connected to the first input end of the rectifier bridge, the second end of the secondary coil of the transformer is connected to the second input end of the rectifier bridge, the positive output end of the rectifier bridge is connected to one end of the fifth resistor, the negative output end of the rectifier bridge is used as a ground point, the other end of the fifth resistor is connected to one end of the capacitor and the input end of the first voltage stabilization circuit, and the other end of the capacitor is grounded.

6. The charging circuit according to claim 1, characterized in that: The charging circuit also includes a second voltage stabilizing circuit, which is arranged between the first voltage stabilizing circuit and the battery interface. The second voltage stabilizing circuit includes a voltage detection circuit and a voltage regulation circuit. The detection input end of the voltage detection circuit is connected to the output end of the first voltage stabilizing circuit, the detection output end of the voltage detection circuit is connected to the control module, the input end of the voltage regulation circuit is connected to the output end of the first voltage stabilizing circuit, the output end of the voltage regulation circuit is connected to the positive electrode of the battery interface, and the control end of the voltage regulation circuit is connected to the control module.

7. The charging circuit according to claim 6, characterized in that: The voltage regulating circuit includes a PMOS tube and a sixth resistor, the source of the PMOS tube is connected to one end of the sixth resistor, the detection input end of the voltage detection circuit and the output end of the first voltage stabilizing circuit, the gate of the PMOS tube is connected to the other end of the sixth resistor and the control module, and the drain of the PMOS tube is connected to the positive electrode of the battery interface.

8. The charging circuit according to claim 7, characterized in that: The voltage regulating circuit also includes an optocoupler, wherein the input end of the light-emitting end of the optocoupler is connected to a second power supply, the output end of the light-emitting end of the optocoupler is connected to a control module, the input end of the light-receiving end of the optocoupler is connected to the gate of the PMOS tube and the other end of the sixth resistor, and the output end of the light-receiving end of the optocoupler is grounded.

9. The charging circuit according to claim 8, characterized in that: The voltage regulating circuit also includes a second zener diode and a seventh resistor, the cathode of the second zener diode is connected to the drain of the PMOS tube and the anode of the battery interface, the anode of the second zener diode is connected to one end of the seventh resistor and the input end of the light receiving end of the optocoupler, and the other end of the seventh resistor is grounded.

10. The charging circuit according to claim 6, characterized in that: The voltage detection circuit includes an eighth resistor and a ninth resistor, one end of the ninth resistor is connected to the output end of the first voltage stabilizing circuit, the other end of the ninth resistor is connected to one end of the eighth resistor and the control module, and the other end of the eighth resistor is grounded.

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