CN217994649U - Car lamp control circuit for electric bicycle - Google Patents
Car lamp control circuit for electric bicycle Download PDFInfo
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- CN217994649U CN217994649U CN202221423799.1U CN202221423799U CN217994649U CN 217994649 U CN217994649 U CN 217994649U CN 202221423799 U CN202221423799 U CN 202221423799U CN 217994649 U CN217994649 U CN 217994649U
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Abstract
The utility model relates to a car light control circuit for electric bicycle, include: the voltage stabilizing circuit is provided with a voltage stabilizing chip, the voltage stabilizing chip is used for receiving power supply voltage, converting the power supply voltage into target voltage and outputting the target voltage to the vehicle lamp, and the model of the voltage stabilizing chip is LDOME6221; and the singlechip control circuit is electrically connected with the voltage stabilizing circuit and is used for controlling the target voltage value of the voltage stabilizing circuit. The output voltage of the voltage stabilizing chip LDOME6221 is controlled through the MCU to realize adjustable voltage, short-circuit protection, current-limiting protection and overheating protection are integrated in the chip, the circuit structure is reasonable in design, the structure is simple, the cost is low, the use is convenient, user experience is enhanced, and brightness adjustment, lamp switching and the like are realized by matching with other external signals (braking or instrument control) through the control of the MCU. The safety performance is further enhanced, and the circuit cannot be easily damaged due to short-circuit protection, current-limiting protection and overheating protection.
Description
Technical Field
The utility model relates to a circuit field especially relates to an electric bicycle car light control circuit.
Background
Due to the continuous development of the electric bicycle, the functional requirements and the safety performance of the electric bicycle tail lamp are also improved. For example, on the basis of the function of turning on and off the lamp, overheat protection and short-circuit protection are added, the tail lamp keeps a low-voltage (low-brightness) lamp-on state in the driving process of the electric bicycle, and when a user brakes or uses an instrument to adjust the brightness of the lamp, the tail lamp is required to realize the function of adjusting the voltage (brightness), namely the function of dynamically adjusting the voltage.
In the existing market, the functions are realized by adding a triode switching circuit in a control circuit of the electric bicycle, and the triode switching circuit is too simple and easily causes the phenomena of circuit short circuit and other damages, so the traditional triode switching circuit cannot meet the current functional requirements.
SUMMERY OF THE UTILITY MODEL
In view of the above, it is necessary to provide a lamp control circuit for an electric bicycle, which is capable of solving the problem of the lamp control circuit in the related art that the circuit is easily damaged due to short circuit.
A lamp control circuit for an electric bicycle, comprising:
the voltage stabilizing circuit is provided with a voltage stabilizing chip, the voltage stabilizing chip is used for receiving power supply voltage, converting the power supply voltage into target voltage and outputting the target voltage to the vehicle lamp, and the model of the voltage stabilizing chip is LDOME6221;
and the singlechip control circuit is electrically connected with the voltage stabilizing circuit and is used for controlling the target voltage value of the voltage stabilizing circuit.
In one preferred embodiment, the single chip microcomputer control circuit is connected to an FB pin of the voltage stabilizing chip.
In one preferred embodiment, the voltage stabilizing circuit further comprises:
one end of the first resistor is connected to the output end of the voltage stabilizing chip;
and one end of the second resistor is connected to the other end of the first resistor, and the other end of the second resistor is grounded.
In one preferred embodiment, the voltage stabilizing circuit further includes a second capacitor, one end of the second capacitor is connected to the voltage output end of the voltage stabilizing chip, and the other end of the second capacitor is grounded.
In one preferred embodiment, the voltage stabilizing circuit further comprises:
the anode of the first diode is connected with the voltage output end of the voltage stabilizing chip, and the cathode of the first diode is connected with the voltage input end of the voltage stabilizing chip;
and the second diode is connected between the voltage output end of the voltage stabilizing chip and the vehicle lamp in series, and the anode of the second diode is connected to the voltage output end of the voltage stabilizing chip.
In one preferred embodiment, the single chip microcomputer control circuit includes:
a single chip microcomputer control chip;
and the filter circuit is connected between the singlechip control chip and the voltage stabilizing circuit.
In one preferred embodiment, the filter circuit includes:
a fourth resistor; one end of the voltage stabilizing circuit is connected to the signal output end of the single chip microcomputer control chip, and the other end of the voltage stabilizing circuit is connected to the voltage stabilizing circuit;
and one end of the fourth capacitor is connected to the other end of the fourth resistor, and the other end of the fourth capacitor is grounded.
In one preferred embodiment, the lamp control circuit further includes:
and the third resistor is connected between the fourth resistor and the voltage stabilizing circuit.
In one preferred embodiment, the lamp control circuit further includes:
and one end of the first capacitor is connected to a power supply voltage receiving end of the voltage stabilizing circuit, and the other end of the first capacitor is grounded and connected with a VSS pin of the voltage stabilizing chip.
In one preferred embodiment, the lamp control circuit further includes:
and one end of the third capacitor is connected to the power supply voltage receiving end of the voltage stabilizing circuit and the CE pin of the voltage stabilizing chip, and the other end of the third capacitor is grounded.
The utility model discloses a MCU controls steady voltage chip LDOME 6221's output voltage and realizes that voltage is adjustable, the function of chip internal integration short-circuit protection, current-limiting protection, overheat protection, its circuit structure reasonable in design, simple structure, low cost, convenient to use strengthen user experience, cooperate other external signal (brake or instrument control) to realize adjustting of the lighteness, switch lamp etc. through MCU's control. The safety performance is further enhanced, and the circuit cannot be easily damaged due to short-circuit protection, current-limiting protection and overheating protection.
Drawings
Fig. 1 is a schematic circuit diagram of a lamp control circuit for an electric bicycle according to a preferred embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments.
As shown in fig. 1, a preferred embodiment of the present invention discloses a lamp control circuit 100 for an electric bicycle, wherein the lamp control circuit 100 includes a voltage stabilizing circuit 110 and a single chip control circuit 120.
Specifically, the voltage stabilizing circuit 110 has a voltage stabilizing chip 111, the voltage stabilizing circuit 110 is configured to receive a supply voltage, convert the supply voltage to a target voltage, and output the target voltage to the vehicle lamp, and the model of the voltage stabilizing chip 111 is LDOME6221;
in more detail, the voltage stabilizing circuit 110 further includes a first resistor R1 and a second resistor R2, wherein one end of the first resistor R1 is connected to the output end of the voltage stabilizing chip 111; one end of the second resistor R2 is connected to the other end of the first resistor R1, and the other end of the second resistor R2 is grounded.
The voltage stabilizing circuit 110 further includes a second capacitor C2, one end of the second capacitor C2 is connected to the voltage output end of the voltage stabilizing chip 111, and the other end is grounded.
The voltage stabilizing circuit 110 further includes a first diode D1 and a second diode D2, wherein an anode of the first diode D1 is connected to the voltage output terminal of the voltage stabilizing chip 111, and a cathode of the first diode D1 is connected to the voltage input terminal of the voltage stabilizing chip 111; the second diode D2 is connected in series between the voltage output terminal of the regulator chip 111 and the vehicle lamp, wherein the anode of the second diode D2 is connected to the voltage output terminal of the regulator chip 111.
The voltage stabilization chip 111 disclosed in this embodiment is an LDOME6221, and its chip integrates an internal protection function, output current limiting, safe operation area compensation, and thermal shutdown. The feedback circuit of the current-limiting protection also serves as the current-limiting protection of the power output and the short-circuit protection of the power output.
The single chip microcomputer control circuit 120 is electrically connected to the voltage regulator circuit 110, and the single chip microcomputer control circuit 120 is used for controlling the target voltage value of the voltage regulator circuit 110.
The single chip microcomputer control circuit 120 is connected to the FB pin of the voltage regulator chip 111. Specifically, the single chip microcomputer control circuit 120 includes a single chip microcomputer control chip 121 and a filter circuit, and the filter circuit is connected between the single chip microcomputer control chip and the voltage stabilizing circuit. In more detail, the filter circuit includes a fourth resistor R4 having one end connected to the signal output end of the single chip microcomputer control chip 121 and the other end connected to the voltage stabilizing circuit 110; the single chip microcomputer control circuit 120 further includes a fourth capacitor C4, one end of the fourth capacitor C4 is connected to the other end of the fourth resistor R4, and the other end of the fourth capacitor C4 is grounded.
The vehicle lamp control circuit 100 further includes a third resistor R3 connected between the fourth resistor R4 and the voltage stabilizing circuit 110.
The vehicle lamp control circuit 100 further includes a first capacitor C1, wherein one end of the first capacitor C1 is connected to a power supply voltage receiving end of the voltage stabilizing circuit 110, and the other end is grounded and connected to a VSS pin of the voltage stabilizing chip 111.
The vehicle lamp control circuit 100 further includes a third capacitor C3, one end of the third capacitor C3 is connected to the power supply voltage receiving end of the voltage stabilizing circuit 110 and the CE pin of the voltage stabilizing chip 111, and the other end is grounded.
The utility model discloses a MCU controls steady voltage chip LDOME 6221's output voltage and realizes that voltage is adjustable, the function of chip internal integration short-circuit protection, current-limiting protection, overheat protection, its circuit structure reasonable in design, simple structure, low cost, convenient to use strengthen user experience, cooperate other external signal (brake or instrument control) to realize adjustting of the lighteness, switch lamp etc. through MCU's control. The safety performance is further enhanced, and the circuit cannot be easily damaged due to short-circuit protection, current-limiting protection and overheating protection.
All possible combinations of the technical features of the above embodiments may not be described for the sake of brevity, but should be considered as within the scope of the present disclosure as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only represent several embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (10)
1. A lamp control circuit for an electric bicycle, comprising:
the voltage stabilizing circuit is provided with a voltage stabilizing chip, the voltage stabilizing chip is used for receiving power supply voltage, converting the power supply voltage into target voltage and outputting the target voltage to the vehicle lamp, and the model of the voltage stabilizing chip is LDOME6221;
and the singlechip control circuit is electrically connected with the voltage stabilizing circuit and is used for controlling the target voltage value of the voltage stabilizing circuit.
2. The vehicular lamp control circuit according to claim 1, wherein the single chip microcomputer control circuit is connected to an FB pin of the voltage stabilization chip.
3. The lamp control circuit of claim 1, wherein the voltage regulator circuit further comprises:
one end of the first resistor is connected to the output end of the voltage stabilizing chip;
and one end of the second resistor is connected to the other end of the first resistor, and the other end of the second resistor is grounded.
4. The lamp control circuit of claim 1, wherein the voltage regulator circuit further comprises a second capacitor having one end connected to the voltage output terminal of the voltage regulator chip and the other end connected to ground.
5. The lamp control circuit of claim 1, wherein the voltage regulator circuit further comprises:
the anode of the first diode is connected with the voltage output end of the voltage stabilizing chip, and the cathode of the first diode is connected with the voltage input end of the voltage stabilizing chip;
and the second diode is connected between the voltage output end of the voltage stabilizing chip and the vehicle lamp in series, and the anode of the second diode is connected to the voltage output end of the voltage stabilizing chip.
6. The lamp control circuit of claim 1, wherein the single-chip microcomputer control circuit comprises:
a single chip microcomputer control chip;
and the filter circuit is connected between the singlechip control chip and the voltage stabilizing circuit.
7. The lamp control circuit of claim 6, wherein the filter circuit comprises:
a fourth resistor; one end of the voltage stabilizing circuit is connected with the signal output end of the singlechip control chip, and the other end of the voltage stabilizing circuit is connected with the voltage stabilizing circuit;
and one end of the fourth capacitor is connected to the other end of the fourth resistor, and the other end of the fourth capacitor is grounded.
8. The lamp control circuit according to claim 7, further comprising:
and the third resistor is connected between the fourth resistor and the voltage stabilizing circuit.
9. The lamp control circuit of claim 1, further comprising:
and one end of the first capacitor is connected to a power supply voltage receiving end of the voltage stabilizing circuit, and the other end of the first capacitor is grounded and connected with a VSS pin of the voltage stabilizing chip.
10. The lamp control circuit according to claim 1, further comprising:
and one end of the third capacitor is connected to the power supply voltage receiving end of the voltage stabilizing circuit and the CE pin of the voltage stabilizing chip, and the other end of the third capacitor is grounded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221423799.1U CN217994649U (en) | 2022-06-08 | 2022-06-08 | Car lamp control circuit for electric bicycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221423799.1U CN217994649U (en) | 2022-06-08 | 2022-06-08 | Car lamp control circuit for electric bicycle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217994649U true CN217994649U (en) | 2022-12-09 |
Family
ID=84293880
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221423799.1U Active CN217994649U (en) | 2022-06-08 | 2022-06-08 | Car lamp control circuit for electric bicycle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217994649U (en) |
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2022
- 2022-06-08 CN CN202221423799.1U patent/CN217994649U/en active Active
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