LED lamp rotating circuit and charging box
By designing the LED turn-on circuit and controlling the conduction of the indicator lights by using the comparison circuit and the LED indicator circuit, the problem of high costs caused by the complexity of the existing charging box indicator light circuit is solved, and the circuit simplification and cost reduction are achieved.
Patent Information
- Application Number
- CN202421361878.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-14
- Publication Date
- 2025-04-15
- Estimated Expiration
- 2034-06-14
AI Technical Summary
The indicator light circuit of the existing charging box is relatively complex, resulting in higher costs.
An LED turn-on circuit is designed, including a first comparison circuit, a second comparison circuit and an LED indication circuit, through which the conduction of the LED indicator light is controlled to achieve an indication of the charging state.
The circuit structure is simplified, the cost of the charging box is reduced, and the charging status of the rechargeable battery can be effectively indicated.
Smart Images
Figure CN222764022U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of power supply, and in particular to an LED rotating light circuit and a charging box. Background Art
[0002] The charging box is a type of charger used to charge rechargeable batteries, and the charging box usually needs to be equipped with an indicator light to indicate the charging status. For example, when the charging box is in the charging state, the indicator light is red, and when the battery is fully charged, the indicator light is green. However, the indicator light circuits of most charging boxes are relatively complex, which increases the cost of the charging box. Utility Model Content
[0003] The utility model provides an LED rotating light circuit and a charging box, aiming to solve the problem of high cost caused by the complex indicator light circuit of the current charging box.
[0004] In a first aspect, the utility model provides an LED rotating light circuit, which includes a first comparison circuit, a second comparison circuit and an LED indication circuit; an input end of the first comparison circuit is connected to the positive pole of a rechargeable battery, and the other input end of the first comparison circuit is connected to the negative pole of the rechargeable battery; an input end of the second comparison circuit is connected to the positive pole of the rechargeable battery, and the other input end of the second comparison circuit is respectively connected to the output end of the first comparison circuit and the negative pole of the rechargeable battery; the LED indication circuit includes a first LED circuit and a second LED circuit, the first LED circuit is connected to the output end of the first comparison circuit, and the second LED circuit is connected to the output end of the second comparison circuit.
[0005] Furthermore, the first comparison circuit includes a first comparator, the non-inverting input terminal of the first comparator is connected to the positive electrode of the rechargeable battery, the inverting input terminal of the first comparator is connected to the negative electrode of the rechargeable battery, and the output terminal of the first comparator is respectively connected to the input terminal of the second comparison circuit and the input terminal of the first LED circuit.
[0006] Furthermore, the first comparison circuit also includes a first resistor and a second resistor; one end of the first resistor is connected to the positive electrode of the rechargeable battery, the other end of the first resistor is respectively connected to the in-phase input end of the first comparator and one end of the second resistor, and the other end of the second resistor is grounded.
[0007] Furthermore, the first comparison circuit also includes a third resistor and a first capacitor; one end of the third resistor is connected to the negative electrode of the rechargeable battery, the other end of the third resistor is respectively connected to one end of the first capacitor and the inverting input end of the first comparator, and the other end of the first capacitor is connected to the input end of the second comparison circuit.
[0008] Furthermore, the second comparison circuit includes a second comparator, the non-inverting input terminal of the second comparator is connected to the positive electrode of the rechargeable battery, the inverting input terminal of the second comparator is respectively connected to the negative electrode of the rechargeable battery and the output terminal of the first comparator, and the output terminal of the second comparator is connected to the input terminal of the second LED circuit.
[0009] Furthermore, the second comparison circuit also includes a fourth resistor and a fifth resistor; one end of the fourth resistor is connected to the positive electrode of the rechargeable battery, the other end of the fourth resistor is respectively connected to the in-phase input terminal of the second comparator and one end of the fifth resistor, and the other end of the fifth resistor is grounded.
[0010] Furthermore, the second comparison circuit also includes a sixth resistor and a second capacitor; one end of the sixth resistor and one end of the second capacitor are both connected to the output end of the first comparator, and the other end of the sixth resistor and the other end of the second capacitor are both connected to the second LED circuit.
[0011] Furthermore, the first LED circuit includes a first light emitting diode, an anode of the first light emitting diode is connected to the output end of the first comparison circuit, and a cathode of the first light emitting diode is grounded.
[0012] Furthermore, the second LED circuit includes a second light emitting diode, an anode of the second light emitting diode is connected to the output end of the second comparison circuit, and a cathode of the second light emitting diode is grounded.
[0013] In a second aspect, the utility model also provides a charging box, which includes the LED rotating light circuit described in any one of the above items.
[0014] The charging box disclosed in the utility model includes an LED rotating light circuit, a first comparison circuit, a second comparison circuit and an LED indication circuit of the LED rotating light circuit, the LED indication circuit includes a first LED circuit and a second LED circuit, the first comparison circuit is used to control the first LED circuit to be turned on, and the second comparison circuit is used to control the second LED circuit to be turned on. When the rechargeable battery is being charged, the first comparison circuit controls the first LED circuit to be turned on, and when the rechargeable battery is fully charged, the second comparison circuit controls the second LED circuit to be turned on. This can not only indicate the charging status of the rechargeable battery, but also has a relatively simple circuit structure, thereby reducing the cost of the charging box. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0016] Figure 1 It is a block diagram of an LED rotating light circuit provided by an embodiment of the utility model;
[0017] Figure 2 The utility model is a circuit diagram of an LED rotating light circuit provided in one embodiment. DETAILED DESCRIPTION
[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0019] It should be understood that when used in this specification and the appended claims, the terms "include" and "comprises" indicate the presence of described features, integers, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integers, operations, elements, components and / or groups thereof.
[0020] It should also be understood that the terms used in this utility model specification are only for the purpose of describing specific embodiments and are not intended to limit the utility model. As used in the utility model specification and the appended claims, the singular forms of "a", "an" and "the" are intended to include plural forms unless the context clearly indicates otherwise. It should also be further understood that the term "and / or" used in the utility model specification and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes these combinations.
[0021] In addition, the directional terms mentioned in the present invention, such as "upper", "lower", "front", "back", "left", "right", "inner", "outer", "side", etc., are only for reference to the directions of the attached drawings and the use status of the product. Therefore, the directional terms used are used to illustrate and understand the present invention, but not to limit the present invention. In addition, in the drawings, structures with similar or identical structures are represented by the same reference numerals.
[0022] See also Figure 1 to Figure 2 , Figure 1It is a block diagram of an LED rotating light circuit 100 provided in one embodiment of the utility model; Figure 2 FIG. 1 is a circuit diagram of an LED rotating light circuit 100 provided in an embodiment of the present invention. Figure 1 As shown, the LED switching light circuit 100 includes a first comparison circuit 10, a second comparison circuit 20 and an LED indication circuit 30; one input end of the first comparison circuit 10 is connected to the positive electrode of the rechargeable battery 200, and the other input end of the first comparison circuit 10 is connected to the negative electrode of the rechargeable battery 200; one input end of the second comparison circuit 20 is connected to the positive electrode of the rechargeable battery 200, and the other input end of the second comparison circuit 20 is respectively connected to the output end of the first comparison circuit 10 and the negative electrode of the rechargeable battery 200; the LED indication circuit 30 includes a first LED circuit 31 and a second LED circuit 32, the first LED circuit 31 is connected to the output end of the first comparison circuit 10, and the second LED circuit 32 is connected to the output end of the second comparison circuit 20.
[0023] Specifically, the charging box is used to charge the rechargeable battery 200. When the rechargeable battery 200 is placed in the charging box for charging, a loop is formed at both ends of the rechargeable battery 200. At this time, one input end of the first comparison circuit 10 and one input end of the second comparison circuit 20 are both connected to the positive electrode of the rechargeable battery 200, and the other input end of the first comparison circuit 10 is connected to the negative electrode of the rechargeable battery 200. At the same time, the other input end of the second comparison circuit 20 is respectively connected to the negative electrode of the rechargeable battery 200 and the output end of the first comparison circuit 10.
[0024] The LED indication circuit 30 includes a first LED circuit 31 and a second LED circuit 32. The first LED circuit 31 and the second LED circuit 32 can present different colors. For example, the first LED circuit 31 is green and the second LED circuit 32 is red. Alternatively, the first LED circuit 31 is blue and the second LED circuit 32 is yellow. The color combination of the first LED circuit 31 and the second LED circuit 32 is not limited here.
[0025] The input end of the first LED circuit 31 is connected to the output end of the first comparison circuit 10, and the switch of the first LED circuit 31 is controlled by the first comparison circuit 10. The input end of the second LED circuit 32 is connected to the output end of the second comparison circuit 20, and the switch of the second LED circuit 32 is controlled by the second comparison circuit 20. For example, the first LED circuit 31 and the second LED circuit 32 can be turned on and off by the level signal. If the first LED circuit 31 and the second LED circuit 32 are both turned on at a high level, when the first comparison circuit 10 outputs a high level, the first LED circuit 31 is turned on, and when the second comparison circuit 20 outputs a high level, the second LED circuit 32 is turned on. At the same time, the output end of the first comparison circuit 10 is connected to the input end of the second comparison circuit 20, and when the first comparison circuit 10 outputs a high level, the second comparison circuit 20 outputs a low level, that is, the first LED circuit 31 and the second LED circuit 32 are not turned on at the same time.
[0026] In actual use, a current threshold can be set according to the actual situation. When the current is greater than the current threshold, it indicates that the charging box is in a charging state, then the first comparison circuit 10 can output a low level to control the first LED circuit 31 to be disconnected, and the second comparison circuit 20 can output a high level to control the second LED circuit 32 to be turned on. When the current is less than the current threshold, it indicates that the charging box is fully charged, then the first comparison circuit 10 outputs a high level to control the first LED circuit 31 to be turned on, and the second comparison circuit 20 outputs a low level to control the second LED circuit 32 to be turned off. It should be noted that when there is no rechargeable battery 200 in the charging box, a loop can be formed through the power supply so that the first comparison circuit 10 outputs a high level and the first LED circuit 31 is turned on.
[0027] Taking the current threshold of 0.15A as an example, when the current is greater than 0.15A, it indicates that the charging box is in a charging state, the first comparison circuit 10 outputs a low level, and the second comparison circuit 20 outputs a high level. When the current is less than 0.15A, it indicates that the charging is completed or is not in a charging state, then the first comparison circuit 10 outputs a high level, and the second comparison circuit 20 outputs a low level.
[0028] See also Figure 2 As a further embodiment, the first comparison circuit 10 includes a first comparator U1, the non-inverting input terminal of the first comparator U1 is connected to the positive electrode of the rechargeable battery 200, the inverting input terminal of the first comparator U1 is connected to the negative electrode of the rechargeable battery 200, and the output terminal of the first comparator U1 is respectively connected to the input terminal of the second comparison circuit 20 and the input terminal of the first LED circuit 31.
[0029] Among them, the non-inverting input terminal of the first comparator U1 is connected to the positive electrode of the rechargeable battery 200, and the inverting input terminal of the first comparator U1 is connected to the negative electrode of the rechargeable battery 200. The first LED circuit 31 is turned on to indicate that the charging box has completed charging, and the second LED circuit 32 is turned on to indicate that the charging box is in a charging state. When the charging box is in a charging state, the current is greater than the current threshold, and the voltage at the inverting input terminal of the first comparator U1 is greater than the voltage at its non-inverting input terminal. The first comparator U1 outputs a low level. At this time, the first LED circuit 31 is not turned on. The second comparison circuit 20 receives the low level output by the first comparator U1, and the second comparison circuit 20 outputs a high level to control the second LED circuit 32 to turn on, indicating that the charging box is in a charging state at this time.
[0030] When the charging box completes charging, the current is less than the current threshold, and the voltage at the inverting input terminal of the first comparator U1 is less than the voltage at its non-inverting input terminal. The first comparator U1 outputs a high level, the first LED circuit 31 is turned on, the second comparison circuit 20 outputs a low level, and the second LED circuit 32 is turned off.
[0031] As a further embodiment, the first comparison circuit 10 further includes a first resistor R1 and a second resistor R2; one end of the first resistor R1 is connected to the positive electrode of the rechargeable battery 200, the other end of the first resistor R1 is respectively connected to the non-inverting input end of the first comparator U1 and one end of the second resistor R2, and the other end of the second resistor R2 is grounded. The first comparison circuit 10 further includes a third resistor R3 and a first capacitor C1; one end of the third resistor R3 is connected to the negative electrode of the rechargeable battery 200, the other end of the third resistor R3 is respectively connected to one end of the first capacitor C1 and the inverting input end of the first comparator U1, and the other end of the first capacitor C1 is connected to the input end of the second comparison circuit 20.
[0032] One end of the first resistor R1 is connected to the positive electrode of the rechargeable battery 200, the other end of the first resistor R1 is connected to the in-phase input end of the first comparator U1 and one end of the second resistor R2, and the other end of the second resistor R2 is grounded. The first resistor R1 and the second resistor R2 are used to detect current and voltage division.
[0033] As a further embodiment, the second comparison circuit 20 includes a second comparator U2, the non-inverting input terminal of the second comparator U2 is connected to the positive electrode of the rechargeable battery 200, the inverting input terminal of the second comparator U2 is respectively connected to the negative electrode of the rechargeable battery 200 and the output terminal of the first comparator U1, and the output terminal of the second comparator U2 is connected to the input terminal of the second LED circuit 32.
[0034] The non-inverting input terminal of the second comparator U2 is connected to the positive electrode of the rechargeable battery 200, the inverting input terminal of the second comparator U2 is respectively connected to the output terminal of the first comparator U1 and the negative electrode of the rechargeable battery 200, and the output terminal of the second comparator U2 is connected to the second LED circuit 32. When the first comparator U1 outputs a low level, the voltage at the non-inverting input terminal of the second comparator U2 is greater than the voltage at its inverting input terminal, the second comparator U2 outputs a high level, and the second LED circuit 32 is turned on; when the first comparator U1 outputs a high level, the voltage at the non-inverting input terminal of the second comparator U2 is less than the voltage at its inverting input terminal, the second comparator U2 outputs a low level, and the second LED circuit 32 is turned off.
[0035] Furthermore, the second comparison circuit 20 further includes a fourth resistor R4 and a fifth resistor R5; one end of the fourth resistor R4 is connected to the positive electrode of the rechargeable battery 200, the other end of the fourth resistor R4 is respectively connected to the non-inverting input end of the second comparator U2 and one end of the fifth resistor R5, and the other end of the fifth resistor R5 is grounded. The second comparison circuit 20 further includes a sixth resistor R6 and a second capacitor C2; one end of the sixth resistor R6 and one end of the second capacitor C2 are both connected to the output end of the first comparator U1, and the other end of the sixth resistor R6 and the other end of the second capacitor C2 are both connected to the second LED circuit 32.
[0036] One end of the fourth resistor R4 is connected to the positive electrode of the charging circuit, the other end of the fourth resistor R4 is connected to the in-phase input end of the second comparator U2 and one end of the fifth resistor R5, and the other end of the fifth resistor R5 is grounded. The fourth resistor R4 and the fifth resistor R5 are used to detect current and voltage division.
[0037] As a further embodiment, the first LED circuit 31 includes a first light emitting diode D1 , an anode of the first light emitting diode D1 is connected to the output end of the first comparison circuit 10 , and a cathode of the first light emitting diode D1 is grounded.
[0038] The first LED circuit 31 may include a first light emitting diode D1, the anode of the first light emitting diode D1 is connected to the output end of the first comparison circuit 10, and the cathode thereof is grounded. The color of the first light emitting diode D1 may be adjusted according to actual conditions, and preferably, the first light emitting diode D1 may be green. When the first comparison circuit 10 outputs a high level, the first light emitting diode D1 is turned on, and when the first comparison circuit 10 outputs a low level, the first light emitting diode D1 is turned off.
[0039] As a further embodiment, the second LED circuit 32 includes a second light emitting diode D2 , an anode of the second light emitting diode D2 is connected to the output end of the second comparison circuit 20 , and a cathode of the second light emitting diode D2 is grounded.
[0040] The second LED circuit 32 may include a second light emitting diode D2, the anode of the second light emitting diode D2 is connected to the output end of the second comparison circuit 20, and the cathode of the second light emitting diode D2 is grounded. The color of the second light emitting diode D2 may be red, and when the first comparison circuit 10 outputs a high level, the second comparison circuit 20 outputs a low level, and the second light emitting diode D2 is disconnected; when the first comparison circuit 10 outputs a low level, the second comparison circuit 20 outputs a high level, and the second light emitting diode D2 is turned on.
[0041] The utility model also provides a charging box, which is provided with an LED rotating light circuit 100 described in any one of the above embodiments; the LED rotating light circuit 100 includes a first comparison circuit 10, a second comparison circuit 20 and an LED indication circuit 30; one input end of the first comparison circuit 10 is connected to the positive pole of the rechargeable battery 200, and the other input end of the first comparison circuit 10 is connected to the negative pole of the rechargeable battery 200; one input end of the second comparison circuit 20 is connected to the positive pole of the rechargeable battery 200, and the other input end of the second comparison circuit 20 is respectively connected to the output end of the first comparison circuit 10 and the negative pole of the rechargeable battery 200; the LED indication circuit 30 includes a first LED circuit 31 and a second LED circuit 32, the first LED circuit 31 is connected to the output end of the first comparison circuit 10, and the second LED circuit 32 is connected to the output end of the second comparison circuit 20.
[0042] Specifically, the charging box is used to charge the rechargeable battery 200. When the rechargeable battery 200 is placed in the charging box for charging, a loop is formed at both ends of the rechargeable battery 200. At this time, one input end of the first comparison circuit 10 and one input end of the second comparison circuit 20 are both connected to the positive electrode of the rechargeable battery 200, and the other input end of the first comparison circuit 10 is connected to the negative electrode of the rechargeable battery 200. At the same time, the other input end of the second comparison circuit 20 is respectively connected to the negative electrode of the rechargeable battery 200 and the output end of the first comparison circuit 10.
[0043] The LED indication circuit 30 includes a first LED circuit 31 and a second LED circuit 32. The first LED circuit 31 and the second LED circuit 32 can present different colors. For example, the first LED circuit 31 is green and the second LED circuit 32 is red. Alternatively, the first LED circuit 31 is blue and the second LED circuit 32 is yellow. The color combination of the first LED circuit 31 and the second LED circuit 32 is not limited here.
[0044] The input end of the first LED circuit 31 is connected to the output end of the first comparison circuit 10, and the switch of the first LED circuit 31 is controlled by the first comparison circuit 10. The input end of the second LED circuit 32 is connected to the output end of the second comparison circuit 20, and the switch of the second LED circuit 32 is controlled by the second comparison circuit 20. For example, the first LED circuit 31 and the second LED circuit 32 can be turned on and off by the level signal. If the first LED circuit 31 and the second LED circuit 32 are both turned on at a high level, when the first comparison circuit 10 outputs a high level, the first LED circuit 31 is turned on, and when the second comparison circuit 20 outputs a high level, the second LED circuit 32 is turned on. At the same time, the output end of the first comparison circuit 10 is connected to the input end of the second comparison circuit 20, and when the first comparison circuit 10 outputs a high level, the second comparison circuit 20 outputs a low level, that is, the first LED circuit 31 and the second LED circuit 32 are not turned on at the same time.
[0045] In actual use, a current threshold can be set according to the actual situation. When the current is greater than the current threshold, it indicates that the charging box is in a charging state, then the first comparison circuit 10 can output a low level to control the first LED circuit 31 to be disconnected, and the second comparison circuit 20 can output a high level to control the second LED circuit 32 to be turned on. When the current is less than the current threshold, it indicates that the charging box is fully charged, then the first comparison circuit 10 outputs a high level to control the first LED circuit 31 to be turned on, and the second comparison circuit 20 outputs a low level to control the second LED circuit 32 to be turned off. It should be noted that when there is no rechargeable battery 200 in the charging box, a loop can be formed through the power supply so that the first comparison circuit 10 outputs a high level and the first LED circuit 31 is turned on.
[0046] The LED rotating light circuit and charging box disclosed by the utility model have a first comparison circuit that can control the first LED circuit to be turned on, and a second comparison circuit that can control the second LED circuit to be turned on. Different LED circuits can be controlled to be turned on according to the state of the charging box to indicate the current charging state of the charging box. At the same time, the circuit structure is simple and the cost can be reduced.
[0047] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the utility model, and these modifications or replacements should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.
Claims
1. An LED rotating light circuit, characterized in that: Applicable to charging box, including: a first comparison circuit, wherein one input terminal of the first comparison circuit is connected to the positive electrode of the rechargeable battery, and another input terminal of the first comparison circuit is connected to the negative electrode of the rechargeable battery; a second comparison circuit, wherein one input end of the second comparison circuit is connected to the positive electrode of the rechargeable battery, and another input end of the second comparison circuit is respectively connected to the output end of the first comparison circuit and the negative electrode of the rechargeable battery; The LED indication circuit includes a first LED circuit and a second LED circuit. The first LED circuit is connected to the output end of the first comparison circuit, and the second LED circuit is connected to the output end of the second comparison circuit.
2. The LED rotating light circuit according to claim 1, characterized in that: The first comparison circuit includes a first comparator, a non-inverting input terminal of the first comparator is connected to the positive electrode of the rechargeable battery, an inverting input terminal of the first comparator is connected to the negative electrode of the rechargeable battery, and an output terminal of the first comparator is respectively connected to an input terminal of the second comparison circuit and an input terminal of the first LED circuit.
3. The LED rotating light circuit according to claim 2, characterized in that: The first comparison circuit also includes a first resistor and a second resistor; One end of the first resistor is connected to the positive electrode of the rechargeable battery, the other end of the first resistor is respectively connected to the non-inverting input end of the first comparator and one end of the second resistor, and the other end of the second resistor is grounded.
4. The LED rotating light circuit according to claim 3, characterized in that: The first comparison circuit also includes a third resistor and a first capacitor; One end of the third resistor is connected to the negative electrode of the rechargeable battery, the other end of the third resistor is respectively connected to one end of the first capacitor and the inverting input end of the first comparator, and the other end of the first capacitor is connected to the input end of the second comparison circuit.
5. The LED rotating light circuit according to claim 2, characterized in that: The second comparison circuit includes a second comparator, the non-inverting input terminal of the second comparator is connected to the positive electrode of the rechargeable battery, the inverting input terminal of the second comparator is respectively connected to the negative electrode of the rechargeable battery and the output terminal of the first comparator, and the output terminal of the second comparator is connected to the input terminal of the second LED circuit.
6. The LED rotating light circuit as claimed in claim 5, characterized in that: The second comparison circuit also includes a fourth resistor and a fifth resistor; One end of the fourth resistor is connected to the positive electrode of the rechargeable battery, the other end of the fourth resistor is respectively connected to the non-inverting input terminal of the second comparator and one end of the fifth resistor, and the other end of the fifth resistor is grounded.
7. The LED rotating light circuit according to claim 6, characterized in that: The second comparison circuit also includes a sixth resistor and a second capacitor; One end of the sixth resistor and one end of the second capacitor are both connected to the output end of the first comparator, and the other end of the sixth resistor and the other end of the second capacitor are both connected to the second LED circuit.
8. The LED rotating light circuit according to claim 1, characterized in that: The first LED circuit includes a first light emitting diode, an anode of the first light emitting diode is connected to the output end of the first comparison circuit, and a cathode of the first light emitting diode is grounded.
9. The LED rotating light circuit according to claim 8, characterized in that: The second LED circuit includes a second light emitting diode, an anode of the second light emitting diode is connected to the output end of the second comparison circuit, and a cathode of the second light emitting diode is grounded.
10. A charging box, characterized in that: It comprises the LED rotating light circuit as described in any one of claims 1 to 9.