A portable charging adapter box

Abstract

A portable charging adapter box is characterized in that it is housed within a portable protective bag, which also contains several rechargeable stage lights. Each rechargeable stage light has a rechargeable battery and a charging control circuit, but no switching power supply. The portable charging adapter box includes a box body, the outer surface of which has an AC power input interface, multiple power output interfaces compatible with the rechargeable stage lights, and multiple ventilation windows. The box body contains a switching power supply, a voltage conversion circuit, a charging status detection circuit, and a fan. The charging control circuit controls the rechargeable stage lights to switch between different charging modes based on signals from the voltage conversion circuit.

Description

Technical Field

[0001] This utility model relates to the field of stage lighting technology, and more specifically, to a portable charging conversion box. Background Technology

[0002] Existing rechargeable stage lighting fixtures generally adopt an independent charging mode, which leads to a double dilemma at the performance site: the limited number of AC outlets cannot meet the needs of charging a large number of lights at the same time, which seriously affects the preparation efficiency; and the numerous and messy charging cables in the flight case are not only easy to get tangled, but also increase the difficulty of cable management and the risk of equipment damage.

[0003] Furthermore, existing rechargeable stage lighting fixtures are usually equipped with fast chargers, meaning that the rechargeable stage lighting fixtures are always in fast charging mode, which can easily accelerate the aging of the built-in rechargeable batteries and shorten the lifespan of the rechargeable stage lighting fixtures. Summary of the Invention

[0004] This invention provides a portable charging converter box that can charge eight rechargeable stage lights simultaneously, solving the problems mentioned in the background art.

[0005] A portable charging adapter is disclosed, which is housed within a portable protective bag. The bag also contains several rechargeable stage lights. Each rechargeable stage light has a rechargeable battery and a charging control circuit, but no switching power supply. The portable charging adapter includes a box body. The outer surface of the box body has an AC power input interface, multiple power output interfaces compatible with the rechargeable stage lights, and multiple ventilation windows. The box body contains a switching power supply, a voltage conversion circuit, a charging status detection circuit, and a fan. The charging control circuit controls the rechargeable stage lights to switch between different charging modes based on signals from the voltage conversion circuit.

[0006] As a further improvement of this utility model, the portable charging conversion box also includes indicator lights located on the outer surface of the box and corresponding to the power output interfaces one by one. The indicator lights are used to display the charging status of the rechargeable stage lights.

[0007] As a further improvement of this utility model, the box body also includes a ventilation plate disposed opposite to both sides of the box body and provided with multiple heat dissipation windows, and the air outlet of the fan faces the switching power supply.

[0008] As a further improvement of this utility model, multiple power output interfaces are connected in parallel and connected to a switching power supply, so that each power output interface can independently provide a constant voltage, realizing simultaneous and non-interfering charging of multiple rechargeable stage lights.

[0009] As a further improvement of this utility model, the box also includes a flat plate disposed opposite to each other on both sides of the box for installing the mains power input interface and the power output interface, and a locking groove for installing the flat plate, wherein the flat plate and the locking groove are adapted to each other.

[0010] As a further improvement of this utility model, the plate for installing the power output interface is provided with a clearance circular hole for the clearance power output interface and a through hole for the clearance indicator light. The clearance circular hole and the through hole are arranged side by side along a straight line and evenly spaced on the plate.

[0011] As a further improvement of this utility model, the number of power output interfaces is 8.

[0012] As a further improvement of this utility model, the rechargeable stage lighting fixture also includes a charging management chip connected to the charging control circuit. The charging management chip is used to collect the voltage input to the rechargeable stage lighting fixture and switch different charging modes based on the comparison result of the voltage and a preset threshold.

[0013] As a further improvement of this utility model, the charging mode includes a constant current charging mode and a constant voltage charging mode. When the voltage collected by the charging management chip is higher than the first preset threshold and lower than the second preset threshold, the mode is switched to constant current charging mode; when the voltage collected by the charging management chip is higher than the second preset threshold, the mode is switched to constant voltage charging mode.

[0014] As a further improvement of this utility model, the outer surface of the box is also provided with an overcurrent protection element, which is connected in series between the mains input interface and the switching power supply.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: (1) The portable charging conversion box of this utility model has eight power output interfaces, which can meet the charging needs of eight rechargeable stage lights at the same time; the charging management chip is set inside the rechargeable stage light. This design reduces the size of the portable charging conversion box and enhances portability. At the same time, the rechargeable stage light can realize the function of different charging modes according to the rechargeable battery turntable. Moreover, the components used in the portable charging conversion box are all common standard parts, which reduces manufacturing costs and maintenance difficulty. Attached Figure Description

[0016] Figure 1 This is a perspective view of the portable charging adapter box of this utility model.

[0017] Figure 2 This is an exploded perspective view of the portable charging conversion box of this utility model.

[0018] Figure 3 This is a schematic diagram of the charging state of a rechargeable stage light fixture according to the present invention.

[0019] Figure 4 This is a circuit diagram showing the charging state of a rechargeable stage light fixture according to the present invention.

[0020] In the diagram: 10-Protective bag; 1-Portable charging adapter box; 11-Box body; 111-Main power input interface; 112-Power output interface; 113-Ventilation plate; 1131-Heat dissipation window; 114-Indicator light; 115-Tablet; 116-Card slot; 117-Overcurrent protection element; 12-Switching power supply; 13-Fan; 2-Rechargeable stage lighting fixture; 21-Rechargeable battery; 22-Charging management chip; 3-Voltage conversion circuit; 4-Charging status detection circuit; 5-Charging control circuit. Detailed Implementation

[0021] Combined with appendix Figure 1 To be continued Figure 4 A portable charging converter 1 is configured within a portable protective bag 10, which also contains several rechargeable stage lights 2. Each rechargeable stage light 2 contains a rechargeable battery 21 and a charging control circuit 5, but no switching power supply. The portable charging converter 1 includes a box body 11, the outer surface of which has an AC power input interface 111, multiple power output interfaces 112 adapted to the rechargeable stage lights 2, and multiple heat dissipation windows 113. The box body 11 contains a switching power supply 12, a voltage conversion circuit 3, a charging status detection circuit 4, and a fan 13. The charging control circuit 5 controls the rechargeable stage lights 2 to switch between different charging modes based on the signal from the voltage conversion circuit 3. The protective case 10 is typically an aviation case. Inside the case 10 are recesses for protecting the rechargeable stage lighting fixture 2, the portable charging adapter box 1, and the power cord. When the portable charging adapter box 1 is connected to AC power, the side of the rechargeable stage lighting fixture 2 with the charging port should face upwards for easy connection. One portable charging adapter box 1 can meet the charging needs of multiple rechargeable stage lighting fixtures 2. The rechargeable stage lighting fixtures 2 can be used directly after being removed from the aviation case, without needing to be arranged and charged at the performance venue. The rechargeable battery 21 of the rechargeable stage lighting fixture 2 is connected to the charging control... In the control circuit 5, it is convenient to detect the charging status of the rechargeable battery 21 and can switch different charging modes according to the charging status of the rechargeable battery 21. The rechargeable stage light fixture 2 is not equipped with a switching power supply, so the rechargeable stage light fixture 2 cannot be directly connected to the mains power. That is, the rechargeable stage light fixture 2 can only be connected to the mains power through the portable charging conversion box 1. The switching power supply 12, the mains power input interface 111 and the power output interface 112 in the portable charging conversion box 1 are respectively connected to the voltage conversion circuit 3. The rechargeable stage light fixture 2 is connected to the voltage conversion circuit 3 to form a charging circuit for the rechargeable battery 21.

[0022] Traditional rechargeable stage lighting fixtures typically include a switching power supply, allowing them to be directly connected to mains power. However, at a performance venue, connecting each rechargeable stage light fixture to mains power via an independent charger presents two significant challenges: first, mains power outlets are scarce, making it difficult to simultaneously meet the charging needs of all rechargeable stage lights; second, using a separate charger for each fixture leads to numerous and potentially tangled wires. Furthermore, traditional rechargeable stage lights often lack charging control circuitry, meaning they operate in a constant fast-charging mode, which can accelerate battery aging and shorten the fixture's lifespan.

[0023] In this embodiment, the switching power supply 12 in a traditional rechargeable stage lighting fixture is externalized and designed as a portable charging conversion box 1. This allows the portable charging conversion box 1 to simultaneously meet the charging needs of multiple rechargeable stage lighting fixtures 2, while using fewer wires, reducing the likelihood of tangling and improving work efficiency. Externalizing the switching power supply 12 also reduces the space it occupies within the rechargeable stage lighting fixture 2. The portable charging conversion box 1 can use low-cost components to simultaneously charge multiple rechargeable stage lighting fixtures. Furthermore, the rechargeable stage lighting fixture 2 is equipped with a charging control circuit 5, which can collect and compare the voltage input to the rechargeable stage lighting fixture 2, and switch between different charging modes based on the comparison results. The charging modes include fast charging and slow charging. In fast charging mode, the charging speed of the rechargeable battery 21 in the rechargeable stage lighting fixture 2 is faster; in slow charging mode, the charging speed of the rechargeable battery 21 in the rechargeable stage lighting fixture 2 is slower, which helps to delay the aging of the rechargeable battery 21. The beneficial effects of this embodiment are that the portable charging conversion box 1 can simultaneously meet the charging needs of multiple rechargeable stage lights 2 in the protective bag 10, thereby improving the charging efficiency of the rechargeable stage lights 2; and the charging control circuit 5 is provided in the rechargeable stage lights 2, which effectively delays the aging of the rechargeable battery 21 and extends the service life of the rechargeable stage lights 2.

[0024] As a new implementation method, combined with the appendix Figure 1 and attached Figure 4The portable charging conversion box 1 also includes indicator lights 114 located on the outer surface of the box body 11 and corresponding to the power output interface 112. The indicator lights 114 are used to display the charging status of the rechargeable stage lighting 2. Indicator lights 114 and power output interfaces 112 are both connected to the charging status detection circuit 4. The number of indicator lights 114 and power output interfaces 112 are equal and correspond one-to-one. Indicator lights 114 are exposed in the portable charging conversion box 1 and are located below the power output interface 112 corresponding to the indicator lights 114. The charging status detection circuit 4 is provided with comparators equal in number to the indicator lights 114, which are used to control the color change of the indicator lights 114. In this embodiment, when the sine wave voltage in the comparator is greater than 0V, the voltage output by the comparator is high. At this time, indicator lights 114 turn red, that is, the rechargeable stage light 2 is connected to the power output interface and the rechargeable stage light 2 is in a low power state. When the sine wave voltage in the comparator is less than 0V, the voltage output by the comparator is low. At this time, indicator lights 114 turn green, that is, the power output interface 112 corresponding to indicator lights 114 is not connected to the rechargeable stage light 2 or the connected rechargeable stage light 2 is in a fully charged state. The beneficial effects of this implementation are that the charging status detection circuit 4 controls the indicator light 114 to switch different colors, which can promptly remind the operator of the charging status of the rechargeable stage light 2 and disconnect the rechargeable stage light 2 when it is fully charged, which is beneficial to protect the rechargeable battery; and in a dark environment, it can clearly display the location of the power output interface 112, find the power output interface 112 when it is unloaded, and make it easy to connect the rechargeable stage light 2 for charging.

[0025] As a new implementation method, combined with the appendix Figure 2 The housing 11 also includes a ventilation plate 113 disposed on both sides of the housing 11 and having multiple heat dissipation windows 1131. The air outlet of the fan 13 faces the switching power supply 12. The heat dissipation windows 1131 are rectangular windows with different lengths; the ventilation plate 113 is a rectangular flat plate, and the heat dissipation windows 1131 of different lengths are evenly spaced on the ventilation plate 113, making the portable charging adapter box 1 more aesthetically pleasing and design-oriented; the heat dissipation windows 1131 are located on both sides of the switching power supply 12. The air blown out from the air outlet of the fan 13 passes through the switching power supply 12 and can be discharged from the portable charging adapter box 1 through the heat dissipation windows 1131 on both sides of the switching power supply 12; forming a circulation with the cold air outside the portable charging adapter box 1, it can dissipate the heat generated by the switching power supply 12 in a timely manner and prevent the switching power supply 12 from overheating and affecting the charging function of the portable charging adapter box 1. The beneficial effect of this embodiment is that the fan 13 installed inside the box 11 can remove the heat generated by the switching power supply 12 inside the portable charging control box 1 in a timely manner; and the heat dissipation windows 1131 installed on both sides of the box 11 can help to expel the hot air inside the box 11.

[0026] As a new implementation method, combined with the appendix Figure 1 and attached Figure 4 Multiple power output interfaces 112 are connected in parallel and jointly connected to the switching power supply 12, enabling each power output interface 112 to independently provide a constant voltage, thus achieving simultaneous and non-interfering charging of multiple rechargeable stage lights 2. In this embodiment, the voltage output by the power output interface 112 of the portable charging converter box 1 is constant, and the total current of the multiple power output interfaces 112 is constant; the rechargeable stage light 2 is equipped with a charging control circuit 5, which can adjust the voltage or current input to the rechargeable stage light 2 according to the needs of the rechargeable battery 21, that is, adjust the charging speed of the rechargeable battery 21; the constant voltage of each power output interface 112 ensures that multiple rechargeable stage lights 2 can switch to different charging modes after being connected to the portable charging converter box 1; and each pair of power output interfaces 112 does not interfere with each other, so even if one power output interface 112 fails, it will not affect the use of other power output interfaces 112. The beneficial effect of this implementation is that each power output interface 112 is independent of each other. Even if one power output interface 112 fails, the other power output interfaces 112 can continue to work, ensuring that the charging of the rechargeable stage lighting 2 proceeds smoothly.

[0027] As a new implementation method, combined with the appendix Figure 2 The housing 11 also includes a flat plate 115 disposed opposite to each other on both sides of the housing 11 for mounting the AC power input interface 111 and the power output interface 112, respectively, and a locking groove 116 for mounting the flat plate 115. The flat plate 115 is adapted to the locking groove 116. The locking groove 116 is a U-shaped groove and is located on the inner side of the housing 11. The two flat plates 115 and the two ventilation plates 113 are alternately mounted on the side of the housing 11, and the width of the flat plate 115 is close to the width of the ventilation plate 113. The power output interface 112 and the indicator light 114 are both soldered onto the printed circuit board. The flat plate 115 is provided with mounting posts, and the printed circuit board is locked onto the flat plate 115. The flat plate 115 is installed in the locking groove 116 to realize the installation of the printed circuit board, the power output interface 112 and the indicator light 114. The AC power input interface 111 is installed on the flat plate 115, and the flat plate 115 is locked in the locking groove 116. The beneficial effect of this embodiment is that the flat plate 115 can not only fix the power output interface 112 and the mains input interface 111, but also protect the power output interface 112 and the indicator light 114 from being scratched and causing the power output interface 112 or the indicator light 114 to shift.

[0028] As a new implementation method, combined with the appendix Figure 2The plate 115 for mounting the power output interface 112 has a clearance hole for preventing the power output interface 112 from being exposed and a through hole for preventing the indicator light 114 from being exposed. The clearance hole and the through hole are arranged side by side in a straight line and evenly spaced on the plate 115. The through hole is circular and located directly below the clearance hole. The power output interface 112 is adapted to the clearance hole, and the indicator light 114 is adapted to the through hole. One end of the power output interface 112 is exposed in the clearance hole, and one end of the indicator light 114 is exposed in the through hole. The outer surface of the plate 115 is lower than the outer surface of the housing 11, and the exposed parts of the power output interface 112 and the indicator light 114 are also lower than the outer surface of the housing 11, which can prevent scratching of the power output interface 112 or the indicator light 114. The power output interface 112 is installed in the clearance hole, and the indicator light 114 is installed in the through hole, and the two are evenly distributed on the plate 115, and each power output interface 112 is equipped with a corresponding indicator light 114. The beneficial effect of this embodiment is that the power output interface 112 and the indicator light 114 can be evenly exposed on the flat plate, the power transmission line can be smoothly plugged into the power output interface 112, and the color change of the indicator light 114 can be clearly observed.

[0029] As a new implementation method, combined with the appendix Figure 1 The portable charging adapter box 1 has eight power output interfaces 112. Each portable charging adapter box 1 is equipped with eight power output interfaces 112, meaning each portable charging adapter box 1 can meet the charging needs of eight rechargeable stage lights 2. All eight power output interfaces 112 are mounted on the same flat plate 115, located on one side of the box body 11. The beneficial effect of this embodiment is that one portable charging adapter box 1 can meet the charging needs of eight rechargeable stage lights 2, and it solves the problem of messy wiring when charging multiple rechargeable stage lights 2.

[0030] As a new implementation method, combined with the appendix Figure 4 The rechargeable stage lighting fixture 2 also includes a charging management chip 22 connected to the charging control circuit 5. The charging management chip 22 collects the voltage input to the rechargeable stage lighting fixture 2 and switches between different charging modes based on a comparison between the voltage and a preset threshold. In this embodiment, two preset voltage thresholds are set in the charging management chip 22. Multiple pins of the charging management chip 22 are connected to the charging control circuit 5 and the voltage conversion circuit 3, respectively. It collects the voltage input to the rechargeable stage lighting fixture 2 or the voltage input to the rechargeable battery 21 in real time, compares it with the set preset thresholds, and outputs a signal to the charging control circuit 5 to achieve switching between fast repetition mode and slow charging mode. The beneficial effect of this embodiment is that the charging management chip 22 can monitor the voltage input to the rechargeable stage lighting fixture 2 in real time and switch between different charging modes according to the real-time voltage, enabling both rapid charging and protection of the rechargeable battery 21, thus delaying the aging of the rechargeable battery 21.

[0031] As a new implementation method, combined with the appendix Figure 4 The charging modes include constant current charging mode and constant voltage charging mode. When the voltage collected by the charging management chip 22 is higher than a first preset threshold and lower than a second preset threshold, it switches to constant current charging mode; when the voltage collected by the charging management chip 22 is higher than the second preset threshold, it switches to constant voltage charging mode. In this embodiment, the first preset threshold is 12V and the second preset threshold is 16V. When the voltage collected by the charging management chip 22 is lower than the first preset threshold, the rechargeable stage light 2 is in trickle charging mode. At this time, the rechargeable stage light 2 has just been connected to the voltage conversion circuit 3, and the charging speed is slow. When the voltage collected by the charging management chip 22 is between the first preset threshold and the second preset threshold, the rechargeable stage light 2 is in constant current charging mode. At this time, the charging speed of the rechargeable stage light 2 is fast, i.e., in fast charging mode. When the voltage collected by the charging management chip 22 is greater than or equal to the second preset threshold, the rechargeable stage light 2 is in constant voltage charging mode. At this time, the charging speed of the rechargeable stage light 2 is slow, i.e., in slow charging mode. The beneficial effect of this implementation is that each rechargeable stage light 2 can switch between constant current charging mode and constant voltage charging mode in real time according to the collected data, which helps to protect the rechargeable battery 21 and delay the aging of the rechargeable battery 21.

[0032] As a new implementation method, combined with the appendix Figure 2 The outer surface of the housing 11 is also provided with an overcurrent protection element 117, which is connected in series between the mains input interface 111 and the switching power supply 12. In this embodiment, the overcurrent protection element 117 is a fuse; the function of the fuse is to prevent input overcurrent caused by a fault in the voltage conversion circuit 3. Once the input current of the mains input interface 111 exceeds the threshold, the fuse will quickly blow, preventing a fault in the portable charging conversion box 1 from affecting the rechargeable stage lighting fixture 2 connected to the portable charging conversion box 1. The beneficial effect of this embodiment is that it can protect the rechargeable stage lighting fixture 2 from being affected when the portable charging conversion box 1 experiences a short circuit fault.

[0033] The working principle of this utility model is explained in the appendix. Figure 1 To be continued Figure 4As shown, firstly, the rechargeable stage light fixture 2 is connected to the power output interface 112 of the portable charging converter box 1. At this time, the charging status detection circuit 4 is triggered, and the indicator light 114 displays a red or green light to indicate the connection status of the power output interface 112. Next, the rechargeable stage light fixture 2 is connected to the voltage conversion circuit 3 through the power output interface 112 displaying the green light, and the voltage conversion circuit 3 supplies power to the rechargeable stage light fixture 2. At the same time, the charging management chip 22 inside each rechargeable stage light fixture 2 begins to monitor the voltage of the rechargeable battery 21 and the power supply voltage provided by the voltage conversion circuit 3 in real time, compares it with a preset threshold, and outputs a charging mode switching command, thereby automatically switching between fast charging and slow charging modes to ensure that the charging process is efficient and safe. Finally, the charging status of the rechargeable stage light fixture 2 will be fed back to the user through the indicator light of the portable charging converter box 1.

Claims

1. A portable charging adapter box, characterized in that, The portable charging adapter is housed in a portable protective bag, which also contains several rechargeable stage lights. Each rechargeable stage light has a rechargeable battery and a charging control circuit, but no switching power supply. The portable charging adapter includes a box body, the outer surface of which has an AC input interface, multiple power output interfaces compatible with the rechargeable stage lights, and multiple ventilation windows. The box body contains a switching power supply, a voltage conversion circuit, a charging status detection circuit, and a fan. The charging control circuit controls the rechargeable stage lights to switch between different charging modes based on signals from the voltage conversion circuit.

2. A portable charging adapter box according to claim 1, characterized in that, The portable charging conversion box also includes indicator lights located on the outer surface of the box and corresponding to the power output interfaces. The indicator lights are used to display the charging status of the rechargeable stage lighting fixture.

3. A portable charging adapter box according to claim 1, characterized in that, The housing also includes ventilation plates disposed opposite each other on both sides of the housing and provided with the plurality of heat dissipation windows, and the air outlet of the fan faces the switching power supply.

4. A portable charging adapter box according to claim 3, characterized in that, Multiple power output interfaces are connected in parallel and jointly connected to the switching power supply, so that each power output interface can independently provide a constant voltage, enabling simultaneous and non-interfering charging of multiple rechargeable stage lights.

5. A portable charging adapter box according to claim 3, characterized in that, The housing also includes a flat plate disposed opposite to each other on both sides of the housing for installing an AC power input interface and a power output interface, and a locking slot for installing the flat plate, wherein the flat plate is adapted to the locking slot.

6. A portable charging adapter box according to claim 5, characterized in that, The plate for installing the power output interface is provided with a clearance hole for the power output interface and a through hole for the clearance indicator light. The clearance hole and the through hole are arranged side by side in a straight line and evenly spaced on the plate.

7. A portable charging adapter box according to claim 1, characterized in that, The number of power output interfaces is 8.

8. A portable charging adapter box according to claim 1, characterized in that, The rechargeable stage lighting fixture also includes a charging management chip connected to the charging control circuit. The charging management chip is used to collect the voltage input to the rechargeable stage lighting fixture and switch different charging modes based on the comparison result of the voltage and a preset threshold.

9. A portable charging adapter box according to claim 8, characterized in that, The charging modes include constant current charging mode and constant voltage charging mode. When the voltage collected by the charging management chip is higher than the first preset threshold and lower than the second preset threshold, it switches to constant current charging mode. When the voltage collected by the charging management chip is higher than the second preset threshold, it switches to constant voltage charging mode.

10. A portable charging adapter box according to claim 1, characterized in that, The outer surface of the housing is also provided with an overcurrent protection element, which is connected in series between the mains input interface and the switching power supply.

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