Power supply module of small unmanned crawler

Abstract

The utility model provides a power module of a small unmanned crawler. The power module comprises an input terminal, a first overcurrent protection circuit, a first filter circuit, a transient voltage suppression circuit, a power conversion circuit and a first output terminal, the first end and the second end of the input terminal are electrically connected with the positive electrode and the negative electrode of an external power supply respectively; the first overcurrent protection circuit is electrically connected between the first end of the input terminal and the first end of the first filter circuit, and the second end of the first filter circuit is grounded; the transient voltage suppression circuit is electrically connected between the first output end of the first filter circuit and the ground; the positive input end and the negative input end of the power conversion circuit are electrically connected to the first end and the second end of the transient voltage suppression circuit respectively, the positive output end of the power conversion circuit is electrically connected with the first end of the first output terminal, and the negative output end of the power conversion circuit is electrically connected with the second end of the first output terminal; the first end and the second end of the first output terminal are the positive electrode output end and the negative electrode output end of 24VDC of the power supply module.

Description

Technical Field

[0001] The present disclosure relates to the technical field of power supply, and in particular to a power supply module of a small unmanned tracked vehicle. Background Art

[0002] The power supply of the small unmanned tracked vehicle comes from a 48VDC lithium battery, but its internal electrical equipment requires a high-power 24VDC power supply. Therefore, it is necessary to install a 48VDC to 24VDC power module on the small unmanned tracked vehicle to meet the power demand of the internal equipment. However, there is currently no power module on the market that can meet the above requirements. Summary of the invention

[0003] In view of this, the present disclosure proposes a power module for a small unmanned tracked vehicle, which can convert an external 48VDC power supply into a 24VDC power supply to meet the demand of the internal equipment of the small unmanned tracked vehicle for a 24VDC power supply.

[0004] According to one aspect of the present disclosure, a power module for a small unmanned tracked vehicle is provided, comprising:

[0005] An input terminal, a first overcurrent protection circuit, a first filtering circuit, a transient voltage suppression circuit, a power conversion circuit, and a first output terminal;

[0006] The first end of the input terminal is electrically connected to the positive electrode of the external power supply as the positive input end of the power module, and the second end of the input terminal is electrically connected to the negative electrode of the external power supply as the negative input end of the power module, wherein the external power supply is used to provide a 48VDC direct current power supply to the power module;

[0007] The first overcurrent protection circuit is electrically connected between the first end of the input terminal and the first end of the first filter circuit, and the second end of the first filter circuit is grounded;

[0008] The first end of the transient voltage suppression circuit is electrically connected to the first end of the first filter circuit, and the second end of the transient voltage suppression circuit is grounded;

[0009] The positive input terminal of the power conversion circuit is electrically connected to the first terminal of the transient voltage suppression circuit, the negative input terminal of the power conversion circuit is electrically connected to the second terminal of the transient voltage suppression circuit, the positive output terminal of the power conversion circuit is electrically connected to the first terminal of the first output terminal, the negative output terminal of the power conversion circuit is electrically connected to the second terminal of the first output terminal, and the negative output terminal of the power conversion circuit is also grounded through a capacitor, wherein the power conversion circuit is used to convert the 48VDC direct current provided by the external power supply into 24VDC direct current;

[0010] The first end of the first output terminal is used as the 24VDC positive output end of the power module, and the second end of the first output terminal is used as the 24VDC negative output end of the power module.

[0011] In a possible implementation manner, the first filtering circuit is implemented based on a first capacitor and a second capacitor.

[0012] In a possible implementation manner, the transient voltage suppression circuit is implemented based on a transient voltage suppression diode.

[0013] In a possible implementation, the power conversion circuit is implemented based on the power converter URF4824QB-150WFR3.

[0014] In a possible implementation, the power converter, a variable resistor, a third capacitor and a fourth capacitor are included, wherein the power converter includes a VIN+ pin, a VIN- pin, a Vo+ pin, a 0V pin, a Trim pin, a Senser+ pin and a Senser- pin;

[0015] The VIN+ pin of the power converter is electrically connected to the first end of the transient voltage suppression circuit as the positive input terminal of the power conversion circuit;

[0016] The VIN- pin of the power converter is electrically connected to the second end of the transient voltage suppression circuit as the negative input terminal of the power conversion circuit;

[0017] The Vo+ pin of the power converter is electrically connected to the first end of the first output terminal as the positive output end of the power conversion circuit;

[0018] The 0V pin of the power converter is electrically connected to the second end of the first output terminal as the negative output end of the power conversion circuit;

[0019] The variable resistor is electrically connected between the Vo+ pin and the Trim pin of the power converter;

[0020] The third capacitor and the fourth capacitor are connected in parallel between the Vo+ pin and the 0V pin of the power converter;

[0021] The Vo+ pin of the power converter is also electrically connected to the Senser+ pin via a wire;

[0022] The 0V pin of the power converter is also electrically connected to the Senser- pin through a wire;

[0023] The Ctrl pin of the power converter is set to be suspended.

[0024] In a possible implementation, a second overcurrent protection circuit is electrically connected between the positive output end of the power conversion circuit and the first end of the first output terminal.

[0025] In a possible implementation manner, a first operation indication circuit is further electrically connected between the first end of the first output terminal and the second end of the first output terminal.

[0026] In a possible implementation, the further comprising: a fifth capacitor and a second output terminal;

[0027] The first end of the first filter circuit is also electrically connected to the first end of the second output terminal, and the second end of the first filter circuit is also electrically connected to the second end of the second output terminal;

[0028] A fifth capacitor is also electrically connected between the first end of the second output terminal and the second end of the second output terminal;

[0029] The first end of the second output terminal is used as the 48VDC positive output end of the power module, and the second end of the second output terminal is used as the 48VDC negative output end of the power module.

[0030] In a possible implementation manner, a second operation indication circuit is further electrically connected between the first end of the second output terminal and the second end of the second output terminal.

[0031] In a possible implementation manner, the second end of the second output terminal is further grounded via a capacitor.

[0032] The present disclosure provides a power module for a small unmanned tracked vehicle, comprising an input terminal, a first overcurrent protection circuit, a first filtering circuit, a transient voltage suppression circuit, a power conversion circuit and a first output terminal; the first end of the input terminal is electrically connected to the positive pole of an external power source as the positive input terminal of the power module, and the second end of the input terminal is electrically connected to the negative pole of the external power source as the negative input terminal of the power module, wherein the external power source is used to provide a 48VDC direct current power supply to the power module; the first overcurrent protection circuit is electrically connected between the first end of the input terminal and the first end of the first filtering circuit, and the second end of the first filtering circuit is grounded; the first end of the transient voltage suppression circuit is electrically connected to the first input end of the first filtering circuit, and the transient voltage suppression circuit is electrically connected to the first output end of the first filtering circuit. The second end of the control circuit is grounded; the positive input end of the power conversion circuit is electrically connected to the first end of the transient voltage suppression circuit, the negative input end of the power conversion circuit is electrically connected to the second end of the transient voltage suppression circuit, the positive output end of the power conversion circuit is electrically connected to the first end of the first output terminal, the negative output end of the power conversion circuit is electrically connected to the second end of the first output terminal, and the negative output end of the power conversion circuit is also grounded through a capacitor, wherein the power conversion circuit is used to convert the 48VDC direct current provided by the external power supply into 24VDC direct current; the first end of the first output terminal is used as the 24VDC positive output end of the power module, and the second end of the first output terminal is used as the 24VDC negative output end of the power module. The power module in the present disclosure can convert the external 48VDC power supply into a 24VDC power supply to meet the demand for 24VDC power supply for the internal equipment of the small unmanned crawler vehicle.

[0033] Furthermore, a first overcurrent protection circuit, a first filtering circuit, and a transient voltage suppression circuit are provided in the power module of the present disclosure. Through the combination of these three circuits, the damage of the peak voltage to the power module can be effectively reduced, thereby extending the service life of the power module.

[0034] Further features and aspects of the present disclosure will become apparent from the following detailed description of exemplary embodiments with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate exemplary embodiments, features, and aspects of the disclosure and, together with the description, serve to explain the principles of the disclosure.

[0036] Figure 1 A schematic block diagram of a power supply module according to an embodiment of the present disclosure is shown. DETAILED DESCRIPTION

[0037] Various exemplary embodiments, features and aspects of the present disclosure will be described in detail below with reference to the accompanying drawings. The same reference numerals in the accompanying drawings represent elements with the same or similar functions. Although various aspects of the embodiments are shown in the accompanying drawings, the drawings are not necessarily drawn to scale unless otherwise specified.

[0038] Among them, it needs to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the utility model or simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model.

[0039] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0040] The word “exemplary” is used exclusively herein to mean “serving as an example, example, or illustration.” Any embodiment described herein as “exemplary” is not necessarily to be construed as preferred or advantageous over other embodiments.

[0041] In addition, in order to better illustrate the present disclosure, numerous specific details are given in the following specific embodiments. It should be understood by those skilled in the art that the present disclosure can also be implemented without certain specific details. In some examples, methods, means, components and circuits well known to those skilled in the art are not described in detail in order to highlight the subject matter of the present disclosure.

[0042] Figure 1 FIG. 1 is a schematic block diagram of a power module according to an embodiment of the present disclosure. Figure 1 As shown, the power module 100 includes: an input terminal 110 , a first overcurrent protection circuit 120 , a first filter circuit 130 , a transient voltage suppression circuit 140 , a power conversion circuit 150 and a first output terminal 160 .

[0043] The first end of the input terminal 110 is electrically connected to the positive pole of the external power supply as the positive input terminal of the power module, and the second end of the input terminal 110 is electrically connected to the negative pole of the external power supply as the negative input terminal of the power module, wherein the external power supply is used to provide a 48VDC lithium battery to the power module.

[0044] The first overcurrent protection circuit 120 is electrically connected between the first end of the input terminal 110 and the first end of the first filter circuit 130, and the second end of the first filter circuit 130 is grounded. The first overcurrent protection circuit 120 is composed of a slow-blow fuse for a vehicle. Preferably, the slow-blow fuse for a vehicle can be a small-sized chip fuse for a vehicle with a model of 10A58VDC. The first overcurrent protection circuit 120 can effectively suppress the problem of burning out the power module caused by an output short circuit caused by an abnormal cable.

[0045] In a possible implementation, the first filter circuit 130 is implemented based on the first capacitor and the second capacitor. Specifically, the first capacitor can be a polar capacitor C1 with a model of 63CE220KX+D, and the second capacitor can be a non-polar capacitor C102 with a model of 100nF100v. The first filter circuit 130 can be obtained by connecting the polar capacitor C1 and the non-polar capacitor C102 in parallel. Among them, the end close to the positive pole of the polar capacitor C1 is the first end of the first filter circuit 130, and the end away from the positive pole of the polar capacitor C1 is the second end of the first filter circuit 130. By setting the first filter circuit 130, voltage spikes and current fluctuations can be reduced, and the input stability of the power module can be improved.

[0046] The first end of the transient voltage suppression circuit 140 is electrically connected to the first input end of the first filter circuit 130, and the second end of the transient voltage suppression circuit 140 is grounded. In a possible implementation, the transient voltage suppression circuit 140 is implemented based on a transient voltage suppression diode. Preferably, the transient voltage suppression diode (TVS) is selected as SMDJ58CA, which is turned on with a 58V voltage, and the discharge capacity can reach 2000 watts instantly, which can meet the high power requirements of the power module.

[0047] The positive input terminal of the power conversion circuit 150 is electrically connected to the first end of the transient voltage suppression circuit 140, the negative input terminal of the power conversion circuit 150 is electrically connected to the second end of the transient voltage suppression circuit 140, the positive output terminal of the power conversion circuit 150 is electrically connected to the first end of the first output terminal 160, the negative output terminal of the power conversion circuit 150 is electrically connected to the second end of the first output terminal 160, and the negative output terminal of the power conversion circuit 150 is also grounded through a capacitor, wherein the power conversion circuit 150 is used to convert 48VDC direct current provided by an external power supply into 24VDC direct current required by internal devices.

[0048] In a possible implementation, the power conversion circuit 150 is implemented based on the power converter URF4824QB-150WFR3. Figure 1As shown, the power conversion circuit 150 includes a power converter of model URF4824QB-150WFR3, a variable resistor Rt1, a third capacitor C2 and a fourth capacitor C103. The power converter of this model includes a VIN+ pin, a VIN- pin, a Vo+ pin, a 0V pin, a Trim pin, a Senser+ pin and a Senser- pin. Among them, the VIN+ pin of the power converter is electrically connected to the first end of the transient voltage suppression circuit 140 as the positive input terminal of the power conversion circuit 150; the VIN- pin of the power converter is electrically connected to the second end of the transient voltage suppression circuit 140 as the negative input terminal of the power conversion circuit 150; the Vo+ pin of the power converter is electrically connected to the first end of the first output terminal 160 as the positive output terminal of the power conversion circuit 150; the 0V pin of the power converter is electrically connected to the second end of the first output terminal 160 as the negative output terminal of the power conversion circuit 150; the variable resistor is electrically connected between the Vo+ pin and the Trim pin of the power converter; the third capacitor and the fourth capacitor are connected in parallel between the Vo+ pin and the 0V pin of the power converter; the Vo+ pin of the power converter is also electrically connected to the Senser+ pin through a wire; the 0V pin of the power converter is also electrically connected to the Senser- pin through a wire; the Ctrl pin of the power converter is set to be suspended. Among them, the variable resistor can be a 47K variable resistor Rt1, the third capacitor can be a 47UF / 63V polar capacitor C2, and the fourth capacitor can be a 100nF100v ordinary capacitor C103.

[0049] The first end of the first output terminal 160 is used as the 24VDC positive output end of the power module, and the second end of the first output terminal 160 is used as the 24VDC negative output end of the power module. The first input terminal 160 includes 7 pins, and pins 1-3 are connected to form the first end of the first output terminal 160, and pins 4-7 are connected to form the second end of the first output terminal 160.

[0050] In a possible implementation, a second overcurrent protection circuit 170 is electrically connected between the positive output end of the power conversion circuit 150 and the first end of the first output terminal 160. The second overcurrent protection circuit 170 is composed of a slow-blow fuse for a vehicle. Preferably, the slow-blow fuse for a vehicle can be a small-sized chip fuse for a vehicle with a model of 10A58VDC. The second overcurrent protection circuit 170 can improve the safety of the power module output.

[0051] In a possible implementation, a first operation indication circuit 180 is electrically connected between the first end of the first output terminal 160 and the second end of the first output terminal 160. The first operation indication circuit 180 is as follows: Figure 1As shown, it includes a resistor R9 and a light-emitting diode LED2 connected in series, wherein the resistance value of the resistor R9 is 47k. The first working indication circuit 180 can indicate whether the voltage output of 24VDC is normal. When the voltage output of 24VDC is normal, it is displayed in green. Through the setting of the first working indication circuit 180, it is possible to quickly determine whether the voltage output state of 24VDC is normal in a small space.

[0052] It should be noted here that in addition to the 24VDC power supply, the internal equipment of the small unmanned tracked vehicle also requires a stable 48VDC power supply. Therefore, in a possible implementation, the power module is also provided with: a fifth capacitor and a second output terminal 190. Specifically, the first end of the first filter circuit 130 is also electrically connected to the first end of the second output terminal 190, and the second end of the first filter circuit 130 is also electrically connected to the second end of the second output terminal 190; a fifth capacitor is also electrically connected between the first end of the second output terminal 190 and the second end of the second output terminal 190; the first end of the second output terminal 190 is used as the 48VDC positive output terminal of the power module, the second end of the second output terminal 190 is used as the 48VDC negative output terminal of the power module, and the second end of the second output terminal 190 is also grounded through a capacitor. Among them, the fifth capacitor can be as follows Figure 1 As shown, a polar capacitor C4 of model 63CE220KX+D is selected. The second output terminal 190 includes 5 pins, wherein pins 1-2 are connected as the first end of the second output terminal 190, and pins 3-5 are connected as the second end of the second output terminal 190.

[0053] In a possible implementation, a second operation indication circuit is electrically connected between the first end of the second output terminal 190 and the second end of the second output terminal 190. Figure 1 As shown, it includes a resistor R8 and a light-emitting diode LED1 connected in series, wherein the resistance value of the resistor R8 is 47k. The second working indication circuit can indicate whether the voltage output of 48VDC is normal. When the voltage output of 48VDC is normal, it is displayed in green. By setting the second working indication circuit, it is possible to quickly determine whether the voltage output state of 48VDC is normal in a small space.

[0054] In a possible implementation, the second end of the second output terminal 190 is also grounded through a capacitor.

[0055] The present disclosure provides a power module for a small unmanned tracked vehicle, comprising an input terminal, a first overcurrent protection circuit, a first filtering circuit, a transient voltage suppression circuit, a power conversion circuit and a first output terminal; the first end of the input terminal is electrically connected to the positive pole of an external power source as the positive input terminal of the power module, and the second end of the input terminal is electrically connected to the negative pole of the external power source as the negative input terminal of the power module, wherein the external power source is used to provide a 48VDC direct current power supply to the power module; the first overcurrent protection circuit is electrically connected between the first end of the input terminal and the first end of the first filtering circuit, and the second end of the first filtering circuit is grounded; the first end of the transient voltage suppression circuit is electrically connected to the first input end of the first filtering circuit, and the transient voltage suppression circuit is electrically connected to the first output end of the first filtering circuit. The second end of the control circuit is grounded; the positive input end of the power conversion circuit is electrically connected to the first end of the transient voltage suppression circuit, the negative input end of the power conversion circuit is electrically connected to the second end of the transient voltage suppression circuit, the positive output end of the power conversion circuit is electrically connected to the first end of the first output terminal, the negative output end of the power conversion circuit is electrically connected to the second end of the first output terminal, and the negative output end of the power conversion circuit is also grounded through a capacitor, wherein the power conversion circuit is used to convert the 48VDC direct current provided by the external power supply into 24VDC direct current; the first end of the first output terminal is used as the 24VDC positive output end of the power module, and the second end of the first output terminal is used as the 24VDC negative output end of the power module. The power module in the present disclosure can convert the external 48VDC power supply into a 24VDC power supply to meet the demand for 24VDC power supply for the internal equipment of the small unmanned crawler vehicle.

[0056] Furthermore, a first overcurrent protection circuit, a first filtering circuit, and a transient voltage suppression circuit are provided in the power module of the present disclosure. Through the combination of these three circuits, the damage of the peak voltage to the power module can be effectively reduced, thereby extending the service life of the power module.

[0057] The embodiments of the present disclosure have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or improvements to the technology in the market, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. A power module for a small unmanned tracked vehicle, characterized in that: include: An input terminal, a first overcurrent protection circuit, a first filtering circuit, a transient voltage suppression circuit, a power conversion circuit, and a first output terminal; The first end of the input terminal is electrically connected to the positive electrode of the external power supply as the positive input end of the power module, and the second end of the input terminal is electrically connected to the negative electrode of the external power supply as the negative input end of the power module, wherein the external power supply is used to provide a 48VDC direct current power supply to the power module; The first overcurrent protection circuit is electrically connected between the first end of the input terminal and the first end of the first filter circuit, and the second end of the first filter circuit is grounded; The first end of the transient voltage suppression circuit is electrically connected to the first end of the first filter circuit, and the second end of the transient voltage suppression circuit is grounded; The positive input terminal of the power conversion circuit is electrically connected to the first terminal of the transient voltage suppression circuit, the negative input terminal of the power conversion circuit is electrically connected to the second terminal of the transient voltage suppression circuit, the positive output terminal of the power conversion circuit is electrically connected to the first terminal of the first output terminal, the negative output terminal of the power conversion circuit is electrically connected to the second terminal of the first output terminal, and the negative output terminal of the power conversion circuit is also grounded through a capacitor, wherein the power conversion circuit is used to convert the 48VDC direct current provided by the external power supply into 24VDC direct current; The first end of the first output terminal is used as the 24VDC positive output end of the power module, and the second end of the first output terminal is used as the 24VDC negative output end of the power module.

2. The power module according to claim 1, characterized in that: The first filtering circuit is implemented based on a first capacitor and a second capacitor.

3. The power module according to claim 1, characterized in that: The transient voltage suppression circuit is implemented based on a transient voltage suppression diode.

4. The power module according to claim 1, characterized in that: The power conversion circuit is implemented based on the power converter URF4824QB-150WFR3.

5. The power module according to claim 4, characterized in that: The power converter includes a variable resistor, a third capacitor and a fourth capacitor, wherein the power converter includes a VIN+ pin, a VIN- pin, a Vo+ pin, a 0V pin, a Trim pin, a Senser+ pin and a Senser- pin; The VIN+ pin of the power converter is electrically connected to the first end of the transient voltage suppression circuit as the positive input terminal of the power conversion circuit; The VIN- pin of the power converter is electrically connected to the second end of the transient voltage suppression circuit as the negative input terminal of the power conversion circuit; The Vo+ pin of the power converter is electrically connected to the first end of the first output terminal as the positive output end of the power conversion circuit; The 0V pin of the power converter is electrically connected to the second end of the first output terminal as the negative output end of the power conversion circuit; The variable resistor is electrically connected between the Vo+ pin and the Trim pin of the power converter; The third capacitor and the fourth capacitor are connected in parallel between the Vo+ pin and the 0V pin of the power converter; The Vo+ pin of the power converter is also electrically connected to the Senser+ pin via a wire; The 0V pin of the power converter is also electrically connected to the Senser- pin through a wire; The Ctrl pin of the power converter is set to be suspended.

6. The power module according to claim 1, characterized in that: A second overcurrent protection circuit is also electrically connected between the positive output end of the power conversion circuit and the first end of the first output terminal.

7. The power module according to claim 1, characterized in that: A first operation indication circuit is also electrically connected between the first end of the first output terminal and the second end of the first output terminal.

8. The power module according to claim 1, characterized in that: Also includes: a fifth capacitor and a second output terminal; The first end of the first filter circuit is also electrically connected to the first end of the second output terminal, and the second end of the first filter circuit is also electrically connected to the second end of the second output terminal; A fifth capacitor is also electrically connected between the first end of the second output terminal and the second end of the second output terminal; The first end of the second output terminal is used as the 48VDC positive output end of the power module, and the second end of the second output terminal is used as the 48VDC negative output end of the power module.

9. The power module according to claim 8, characterized in that: A second operation indication circuit is also electrically connected between the first end of the second output terminal and the second end of the second output terminal.

10. The power module according to claim 8, characterized in that: The second end of the second output terminal is also grounded via a capacitor.

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