Desk lamp charger

Abstract

The utility model discloses a table lamp charger, table lamp charger includes base, top board, magnetic attraction charging circuit and power supply line, top board is installed above base, and the installation cavity is formed between top board and base, and the upper surface of top board is provided with a plurality of magnetic attraction charging heads, and a plurality of magnetic attraction charging heads are evenly arranged on the upper surface of top board, magnetic attraction charging circuit sets up in the installation cavity, and magnetic attraction charging circuit is connected with all magnetic attraction charging heads respectively, base is provided with mounting hole, and power supply line is arranged in mounting hole and is connected with magnetic attraction charging circuit, and power supply line is used for connecting external power supply and magnetic attraction charging circuit. The utility model discloses can charge to multiple table lamps simultaneously, improves charging efficiency.

Description

Technical Field

[0001] This utility model relates to the field of desk lamp charging technology, and in particular to a desk lamp charger. Background Technology

[0002] Currently, charging docks are generally plug-in type, connecting the female charging port of the desk lamp to the male port on the charging dock. In these technologies, the charging dock is designed with only a single male port, making it impossible to charge multiple desk lamps simultaneously, and the plug-in structure is prone to loosening after repeated plugging and unplugging. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a desk lamp charger capable of charging multiple desk lamps simultaneously, thereby improving charging efficiency.

[0004] The desk lamp charger according to a first aspect embodiment of the present invention includes:

[0005] Base;

[0006] A top plate is installed above the base, and a mounting cavity is formed between the top plate and the base. Multiple magnetic charging heads are provided on the upper surface of the top plate, and the multiple magnetic charging heads are evenly arranged on the upper surface of the top plate.

[0007] A magnetic charging circuit is disposed within the mounting cavity and is connected to each of the magnetic charging heads.

[0008] The power supply cord is provided. The base has a mounting hole. The power supply cord passes through the mounting hole and is connected to the magnetic charging circuit. The power supply cord is used to connect an external power source and the magnetic charging circuit.

[0009] The desk lamp charger according to this utility model embodiment has at least the following beneficial effects: by setting multiple magnetic charging heads on the top plate, multiple desk lamps can be magnetically charged simultaneously, improving charging efficiency. Furthermore, the connection between the magnetic charging heads and the desk lamps is magnetically fixed, effectively preventing the plug-in structure from easily becoming loose after repeated plugging and unplugging.

[0010] According to some embodiments of the present invention, the top plate is provided with charging areas corresponding one-to-one with the magnetic charging head, the magnetic charging head is located at the center of the charging area, and limiting members are provided around the charging area.

[0011] According to some embodiments of the present invention, a support member is also provided at the bottom of the base.

[0012] According to some embodiments of the present invention, the magnetic charging circuit includes a power input terminal and a control chip. The input terminal of the control chip is connected to the power supply line through the power input terminal, and the output terminal of the control chip is connected to each of the magnetic charging heads.

[0013] According to some embodiments of the present invention, the magnetic charging circuit further includes a MOSFET and a Zener diode. The power input terminal includes a positive input terminal and a negative input terminal. The positive input terminal is connected to the input terminal of the control chip, the gate of the MOSFET, and the negative terminal of the Zener diode, respectively. The source of the MOSFET is connected to the negative input terminal. The drain of the MOSFET and the positive terminal of the Zener diode are both grounded.

[0014] According to some embodiments of the present invention, the magnetic charging circuit further includes a first resistor, the first end of which is connected to the positive input terminal, and the second end of which is connected to the gate of the MOS transistor and the negative terminal of the Zener diode, respectively.

[0015] According to some embodiments of the present invention, the magnetic charging circuit further includes a first light-emitting diode and a second light-emitting diode. The positive terminals of the first light-emitting diode and the second light-emitting diode are respectively connected to the positive input terminal. The negative terminal of the first light-emitting diode is connected to the first control terminal of the control chip, and the negative terminal of the second light-emitting diode is connected to the second control terminal of the control chip.

[0016] According to some embodiments of the present invention, the magnetic charging circuit further includes a second resistor, a third resistor, and a first capacitor. The third resistor and the first capacitor are connected in series to form a filter branch. The positive input terminal is connected to the first terminal of the second resistor and the first terminal of the filter branch, respectively. The second terminal of the filter branch is grounded. The second terminal of the second resistor is connected to the positive terminal of the first light-emitting diode and the positive terminal of the second light-emitting diode, respectively.

[0017] According to some embodiments of the present invention, the magnetic charging circuit further includes a thermistor, the first end of which is connected to the feedback terminal of the control chip, and the second end of which is grounded.

[0018] According to some embodiments of this utility model, the magnetic charging circuit further includes a first inductor, a fourth resistor, and a second capacitor. The magnetic charging head includes a positive charging terminal and a negative charging terminal. The first inductor and the fourth resistor are connected in series to form a first branch. The first output terminal of the control chip is connected to the first end of the first branch, and the second end of the first branch is connected to the positive charging terminal. The second output terminal of the control chip is connected to the connection point of the first inductor and the fourth resistor. The third output terminal of the control chip is connected to the first end of the second capacitor and the positive charging terminal, respectively. The second end of the second capacitor is connected to the negative charging terminal.

[0019] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0021] Figure 1 This is a schematic diagram of the structure of the desk lamp charger according to an embodiment of the present utility model;

[0022] Figure 2 This is a circuit diagram of a desk lamp charger according to an embodiment of the present invention. Detailed Implementation

[0023] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0024] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0025] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0026] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0027] Reference Figure 1 , Figure 1 This is a schematic diagram of the structure of the table lamp charger according to an embodiment of the present utility model.

[0028] As can be understood, the desk lamp charger includes a base 100, a top plate 200, a magnetic charging circuit, and a power supply cord 300. The top plate 200 is mounted above the base 100, forming a mounting cavity between the top plate 200 and the base 100. Multiple magnetic charging heads 220 are evenly arranged on the upper surface of the top plate 200. The magnetic charging circuit is located within the mounting cavity and is connected to each of the magnetic charging heads 220. The base 100 has mounting holes through which the power supply cord 300 passes and connects to the magnetic charging circuit. The power supply cord 300 connects to an external power source and the magnetic charging circuit. Furthermore, the top plate 200 also has charging areas 210 corresponding to each magnetic charging head 220. Each magnetic charging head 220 is located at the center of the charging area 210, and limiting members 230 are provided around the perimeter of the charging area 210. The limiting member 230 is used to limit the charging range of the desk lamp, remind the user, prevent the user from charging an excessively large desk lamp, and prevent the desk lamp from tipping over. For example, the limiting member 230 can be a limiting protrusion set around the charging area 210, or it can be a marking line set around the charging area 210.

[0029] Specifically, by placing the magnetic charging circuit within the mounting cavity, the user is prevented from touching the magnetic charging circuit, thus improving the safety of the desk lamp charger. By installing multiple magnetic charging heads 220 on the top plate 200, the user can simultaneously magnetically charge multiple desk lamps by placing them on the magnetic charging heads 220 on the top plate 200, improving charging efficiency. Furthermore, the magnetic charging head 220 is magnetically fixed to the desk lamp, effectively preventing the plug-in structure from easily loosening after repeated plugging and unplugging.

[0030] It should be noted that the bottom of the base 100 is also equipped with a support component, which can effectively improve the stability of the desk lamp charger.

[0031] Reference Figure 2 , Figure 2 This is a circuit diagram of a desk lamp charger according to an embodiment of the present invention.

[0032] It is understood that the magnetic charging circuit includes a power input terminal and a control chip U1. The input terminal of the control chip U1 is connected to the power supply line 300 through the power input terminal, and the output terminal of the control chip U1 is connected to each magnetic charging head 220 respectively. The control chip U1 is used to convert the working voltage input from the power supply line 300 into the voltage required for the operation of the magnetic charging head 220. Multiple magnetic charging heads 220 can be connected in parallel to form a magnetic charging branch. The control chip U1 is connected to the magnetic charging branch to supply power to the magnetic charging branch. In addition, in some embodiments, multiple control chips U1 can be provided, and each control chip U1 controls one magnetic charging head 220 independently.

[0033] It should be noted that the magnetic charging circuit also includes a MOSFET Q1 and a Zener diode ZD1. The power input terminals include a positive input terminal DC+ and a negative input terminal DC-. The positive input terminal DC+ is connected to the input terminal of the control chip U1, the gate of the MOSFET Q1, and the negative terminal of the Zener diode ZD1. The source of the MOSFET Q1 is connected to the negative input terminal DC-, and the drain of the MOSFET Q1 and the positive terminal of the Zener diode ZD1 are both grounded. When the positive input terminal DC+ and the negative input terminal DC- are reversed, the MOSFET Q1 is turned off, and the positive input terminal DC+ and the negative input terminal DC- cannot form a complete circuit, thus protecting the magnetic charging circuit. Similarly, when the positive input terminal DC+ and the negative input terminal DC- are correctly connected, the MOSFET Q1 is turned on, and the positive input terminal DC+ and the negative input terminal DC- form a complete circuit, allowing the magnetic charging circuit to operate normally. Reverse connection protection of the circuit is achieved by using the MOSFET Q1 and the Zener diode ZD1.

[0034] Specifically, the magnetic charging circuit also includes a first resistor R1, the first end of which is connected to the positive input terminal DC+, and the second end of which is connected to the gate of the MOSFET Q1 and the negative terminal of the Zener diode ZD1.

[0035] It should be noted that the magnetic charging circuit also includes a first light-emitting diode (LED1) and a second light-emitting diode (LED2). The positive terminals of LED1 and LED2 are connected to the positive input terminal DC+, respectively. The negative terminal of LED1 is connected to the first control terminal of the control chip U1, and the negative terminal of LED2 is connected to the second control terminal of the control chip U1. The first control terminal of the control chip U1 can control the first LED1 to conduct, and the second control terminal of the control chip U1 can control the second LED2 to conduct. Therefore, the control chip U1 can control the conduction of LED1 and LED2 according to different operating states to remind the user of the current operating status of the lamp charger.

[0036] Specifically, the magnetic charging circuit also includes a second resistor R2, a third resistor R3, and a first capacitor C1. The third resistor R3 and the first capacitor C1 are connected in series to form a filter branch. The positive input terminal DC+ is connected to the first end of the second resistor R2 and the first end of the filter branch, respectively. The second end of the filter branch is grounded. The second end of the second resistor R2 is connected to the positive terminal of the first light-emitting diode LED1 and the positive terminal of the second light-emitting diode LED2, respectively. By setting up the filter branch, the stability of the input current can be improved.

[0037] It should be noted that the magnetic charging circuit also includes a thermistor RT1. The first terminal of the thermistor RT1 is connected to the feedback terminal of the control chip U1, and the second terminal of the thermistor RT1 is grounded. Thermistor RT1 can be used to obtain the operating temperature of the magnetic charging circuit. It converts the temperature into a current signal, which is then sent to the feedback terminal of the control chip U1. The control chip U1 can determine the operating temperature of the magnetic charging circuit based on the current magnitude at the feedback terminal. This allows it to promptly cut off the circuit in case of overheating, preventing damage and improving the operational stability of the magnetic charging circuit.

[0038] It should be noted that the magnetic charging circuit also includes a first inductor L1, a fourth resistor R4, and a second capacitor C2. The magnetic charging head 220 includes a positive charging terminal BAT+ and a negative charging terminal BAT-. The first inductor L1 and the fourth resistor R4 are connected in series to form a first branch. The first output terminal of the control chip U1 is connected to the first end of the first branch, and the second end of the first branch is connected to the positive charging terminal BAT+. The second output terminal of the control chip U1 is connected to the connection point of the first inductor L1 and the fourth resistor R4. The third output terminal of the control chip U1 is connected to the first end of the second capacitor C2 and the positive charging terminal BAT+, respectively. The second end of the second capacitor C2 is connected to the negative charging terminal BAT-. By setting the first inductor L1, the output voltage can be stabilized, avoiding damage to the desk lamp in the charging state caused by sudden changes in output voltage.

[0039] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A desk lamp charger, characterized in that, include: Base; A top plate is installed above the base, and a mounting cavity is formed between the top plate and the base. Multiple magnetic charging heads are provided on the upper surface of the top plate, and the multiple magnetic charging heads are evenly arranged on the upper surface of the top plate. A magnetic charging circuit is disposed within the mounting cavity and is connected to each of the magnetic charging heads. The power supply cord is provided in the base with a mounting hole. The power supply cord passes through the mounting hole and is connected to the magnetic charging circuit. The power supply cord is used to connect an external power source and the magnetic charging circuit. The magnetic charging circuit includes a power input terminal and a control chip. The input terminal of the control chip is connected to the power supply line through the power input terminal, and the output terminal of the control chip is connected to each of the magnetic charging heads. The magnetic charging circuit also includes a MOSFET and a Zener diode. The power input terminal includes a positive input terminal and a negative input terminal. The positive input terminal is connected to the input terminal of the control chip, the gate of the MOSFET, and the negative terminal of the Zener diode. The source of the MOSFET is connected to the negative input terminal, and the drain of the MOSFET and the positive terminal of the Zener diode are both grounded.

2. The desk lamp charger according to claim 1, characterized in that, The top plate is provided with charging areas that correspond one-to-one with the magnetic charging heads. The magnetic charging heads are located at the center of the charging areas, and limiting members are provided around the charging areas.

3. The desk lamp charger according to claim 1, characterized in that, The base is also equipped with a support member at its bottom.

4. The desk lamp charger according to claim 1, characterized in that, The magnetic charging circuit further includes a first resistor, the first end of which is connected to the positive input terminal, and the second end of which is connected to the gate of the MOS transistor and the negative terminal of the Zener diode.

5. The desk lamp charger according to claim 1, characterized in that, The magnetic charging circuit further includes a first light-emitting diode and a second light-emitting diode. The positive terminals of the first and second light-emitting diodes are respectively connected to the positive input terminal. The negative terminal of the first light-emitting diode is connected to the first control terminal of the control chip, and the negative terminal of the second light-emitting diode is connected to the second control terminal of the control chip.

6. The desk lamp charger according to claim 5, characterized in that, The magnetic charging circuit further includes a second resistor, a third resistor, and a first capacitor. The third resistor and the first capacitor are connected in series to form a filter branch. The positive input terminal is connected to the first terminal of the second resistor and the first terminal of the filter branch, respectively. The second terminal of the filter branch is grounded. The second terminal of the second resistor is connected to the positive terminal of the first light-emitting diode and the positive terminal of the second light-emitting diode, respectively.

7. The desk lamp charger according to claim 1, characterized in that, The magnetic charging circuit also includes a thermistor, the first end of which is connected to the feedback terminal of the control chip, and the second end of which is grounded.

8. The desk lamp charger according to claim 1, characterized in that, The magnetic charging circuit further includes a first inductor, a fourth resistor, and a second capacitor. The magnetic charging head includes a positive charging terminal and a negative charging terminal. The first inductor and the fourth resistor are connected in series to form a first branch. The first output terminal of the control chip is connected to the first end of the first branch, and the second end of the first branch is connected to the positive charging terminal. The second output terminal of the control chip is connected to the connection point of the first inductor and the fourth resistor. The third output terminal of the control chip is connected to the first end of the second capacitor and the positive charging terminal, respectively. The second end of the second capacitor is connected to the negative charging terminal.

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