CN214380245U - Low-voltage charger - Google Patents
Low-voltage charger Download PDFInfo
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- CN214380245U CN214380245U CN202120581491.9U CN202120581491U CN214380245U CN 214380245 U CN214380245 U CN 214380245U CN 202120581491 U CN202120581491 U CN 202120581491U CN 214380245 U CN214380245 U CN 214380245U
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Abstract
The utility model discloses a low voltage charger, it includes: the power supply module, adjustable winding transformer module, the MCU module, the excess temperature protection module, the overvoltage protection module, the detection module, the adjusting module, the pilot lamp module, the feedback module, display module and output module, the input of power supply module is connected domestic power, the input of adjustable winding transformer module is connected to power supply module's output, the MCU module is connected to the output of adjustable winding transformer, the excess temperature protection module is connected respectively to the MCU module, the overvoltage protection module, the detection module, the adjusting module, the pilot lamp module, the feedback module, display module and output module. Through the design of the charger, the adjustable winding transformer module, the MCU module, the indicator light module, the over-temperature/over-voltage protection circuit, the detection module, the feedback module, the adjusting module and the display module are adopted, the protection of electronic components in the charger is realized, the voltage is reduced, and the required voltage of the rechargeable battery pack is achieved.
Description
Technical Field
The utility model relates to a charger technical field, concretely relates to low voltage charger.
Background
With the development of society and the progress of technology level, more and more technology products and intelligent products are applied to the market; the charger is a power supply tool which is most frequently used in modern life and can provide great convenience for some electronic products.
The conventional charger cannot perform protective charging according to the service condition of the battery, or cannot display the safe voltage of the charged battery during charging, so that a user still uses the rechargeable battery according to a conventional method, the battery is not subjected to protective use, the battery is damaged to different degrees, and the service life of the battery is further shortened.
In summary, the existing charger is yet to be further improved.
SUMMERY OF THE UTILITY MODEL
The utility model relates to a low-voltage charger, which adopts an adjustable winding transformer module through the design of the charger, thereby realizing the change of output voltage and meeting the required voltage of a rechargeable battery pack; the MCU module is adopted to realize other functional control of the charger; the indicator light module is adopted, so that a user can conveniently know whether the charger is connected to a household power supply or not and whether the charger is externally connected with a carrier or not; the over-temperature and over-voltage protection circuit is adopted, so that the electronic components in the charger can be effectively prevented from being damaged under the abnormal conditions of high temperature and high voltage; the connection state of the battery pack can be effectively detected by adopting the detection module; the feedback module and the adjusting module are adopted, so that the secondary coil with variable turns in the adjustable winding transformer module can be effectively adjusted, the voltage is further reduced, and the voltage required by the rechargeable battery pack is achieved; by adopting the display module, the voltage/current value of the output module can be displayed at any time.
The technical scheme of the utility model is specifically as follows:
a low voltage charger, the charger comprising: the device comprises a power supply module, an adjustable winding transformer module, an MCU module, an over-temperature protection module, an overvoltage protection module, a detection module, an adjustment module, an indicator lamp module, a feedback module, a display module and an output module;
furthermore, the input end of the power supply module is connected with a household power supply, the output end of the power supply module is connected with the input end of the adjustable winding transformer module, the output end of the adjustable winding transformer module is connected with an MCU module, and the MCU module is respectively connected with the over-temperature protection module, the overvoltage protection module, the detection module, the adjustment module, the indicator light module, the feedback module, the display module and the output module.
Further, the output end of the MCU module is connected with the output module.
Further, the adjustable winding transformer module comprises a primary coil with a constant turn number and a secondary coil with a variable turn number, and the primary coil with the constant turn number and the secondary coil with the variable turn number are in coupling matching.
Further, when the over-temperature protection module collects high temperature, the over-temperature protection module transmits a corresponding signal to the MCU module, the MCU module identifies and processes the signal and then sends a corresponding instruction signal to execute a power supply closing action on the charger, and at the moment, the output module stops outputting voltage.
Further, when the overvoltage protection module collects high voltage, the corresponding signal is transmitted to the MCU module, the MCU module identifies and processes the signal and then sends out a corresponding instruction signal to execute a power supply closing action on the charger, and at the moment, the output module stops outputting voltage.
Further, the detection module is electrically connected to the output module and is configured to detect a connection state between the output module and an external carrier (e.g., a rechargeable battery).
Further, the detection module comprises a voltage detection unit, a current detection unit and an infrared induction detection unit, the infrared induction detection unit identifies the external carrier of the output module, and the voltage detection unit and the current detection unit identify and judge the connection state of the external carrier of the output module.
According to the arrangement, the voltage detection unit, the current detection unit and the infrared induction detection unit are all connected with the MCU module, the infrared induction detection unit detects that the output module is connected with an external carrier, a detection signal can be transmitted to the MCU module, after the MCU module processes the signal, an instruction corresponding to the signal is executed, the output module applies appropriate voltage/current, and the voltage detection unit and the current detection unit detect whether the external carrier is stably connected or not.
Furthermore, the feedback module is electrically connected with the output module, the feedback module is used for collecting normal output voltage of the output module, the output voltage is input voltage of a rechargeable battery pack, the battery pack is composed of a plurality of rechargeable batteries, the battery pack can generate a certain amount of electric leakage along with increase of service time, at the moment, the required input voltage is relatively low, the feedback module collects the output voltage of the output module and the leakage voltage of the battery pack, after the output voltage and the leakage voltage are integrated, a feedback signal is formed and transmitted to the MCU module, the MCU sends a corresponding instruction to the adjusting module, and then the adjustable winding transformer module is driven to reduce the voltage of the output end of the transformer, so that the input low voltage of the battery pack is realized, and the battery pack is protected.
According to the arrangement, the voltage/current value of the output module can be collected at any time by the feedback module, the voltage/current value of the output module is transmitted to the MCU module, the MCU module processes the signal and sends a signal instruction to the adjusting module, and the adjusting module adjusts the adjustable winding transformer module so as to stabilize the voltage/current value of the output module.
Furthermore, the adjusting module comprises a receiving unit and a driving unit, and the receiving unit is used for receiving an adjusting instruction sent by the MCU module; the driving unit is used for recognizing the adjusting instruction and driving the change of the secondary coil with the variable number of turns according to the corresponding adjusting instruction.
Further, the display module comprises a data reading module and a display module, wherein the data reading module reads the real-time voltage value/current value from the MCU module, and the display module displays the voltage value/current value.
Further, the indicator light module selects an LED indicator light.
Further, under the condition of switching on the power supply, and when no external carrier is connected or the external carrier is not stably connected, the LED indicator lamp is in a flash state; under the condition of switching on the power supply and when the external carrier is stably connected, the LED indicating lamp is in a long-bright state.
According to the arrangement, the LED indicator lamp is controlled by the MCU module, the detection module transmits the connection state of the output module and the external carrier to the MCU module through the matching of the detection module, and the MCU module carries out instructions of different states on the LED indicator lamp according to different states.
Advantageous effects
The utility model relates to a low voltage charger, which adopts an adjustable winding transformer module to realize the change of output voltage and satisfy the required voltage of a rechargeable battery pack through the design of the charger; the MCU module is adopted to realize other functional control of the charger; the indicator light module is adopted, so that a user can conveniently know whether the charger is connected to a household power supply or not and whether the charger is externally connected with a carrier or not; the over-temperature and over-voltage protection circuit is adopted, so that the electronic components in the charger can be effectively prevented from being damaged under the abnormal conditions of high temperature and high voltage; the connection state of the battery pack can be effectively detected by adopting the detection module; the feedback module and the adjusting module are adopted, so that the secondary coil with variable turns in the adjustable winding transformer module can be effectively adjusted, the voltage is further reduced, and the voltage required by the rechargeable battery pack is achieved; by adopting the display module, the voltage/current value of the output module can be displayed at any time, and the display module can be widely applied to the aspect of charging.
Drawings
Fig. 1 is a schematic structural diagram of a low-voltage charger according to the present invention.
Reference numerals: 1. a power supply module; 2. an adjustable winding transformer module; 3. an MCU module; 4. an over-temperature protection module; 5. an overvoltage protection module; 6. a detection module; 7. an adjustment module; 8. an indicator light module; 9. a feedback module; 10. a display module; 11. and an output module.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1, the present invention provides a low voltage charger, the charger includes: the device comprises a power module 1, an adjustable winding transformer module 2, an MCU module 3, an over-temperature protection module 4, an overvoltage protection module 5, a detection module 6, an adjusting module 7, an indicator light module 8, a feedback module 9, a display module 10 and an output module 11;
the input end of the power supply module 1 is connected with a household power supply, the output end of the power supply module 1 is connected with the input end of the adjustable winding transformer module 2, the output end of the adjustable winding transformer module 2 is connected with the MCU module 3, and the MCU module 3 is respectively connected with the over-temperature protection module 4, the overvoltage protection module 5, the detection module 6, the adjusting module 7, the indicator light module 8, the feedback module 9, the display module 10 and the output module 11;
the adjustable winding transformer module 2 comprises a primary coil with a constant turn number and a secondary coil with a variable turn number, and the primary coil with the constant turn number and the secondary coil with the variable turn number are in coupling matching; when the over-temperature protection module 4 acquires high temperature, the corresponding signal is transmitted to the MCU module 3, and after the MCU module 3 identifies and processes the signal, the corresponding instruction signal is sent out to close the power supply of the charger, and at the moment, the output module 11 stops outputting voltage; when the overvoltage protection module 5 acquires a high voltage, the corresponding signal is transmitted to the MCU module 3, and after the MCU module 3 recognizes and processes the signal, the corresponding instruction signal is sent to turn off the power supply of the charger, and at this time, the output module 11 stops outputting the voltage;
the detection module 6 comprises a voltage detection unit, a current detection unit and an infrared induction detection unit, wherein the infrared induction detection unit identifies an external carrier of the output module 11, and the voltage detection unit and the current detection unit identify and judge the connection state of the external carrier of the output module 11; the adjusting module 7 comprises a receiving unit and a driving unit, and the receiving unit is used for receiving an adjusting instruction sent by the MCU module 3; the driving unit is used for recognizing the adjusting instruction and driving the change of the secondary coil with the variable number of turns according to the corresponding adjusting instruction, and the indicating lamp module 8 is an LED indicating lamp;
the feedback module 9 collects normal output voltage of the output module 11, the output voltage is input voltage of a rechargeable battery pack, the battery pack is composed of a plurality of rechargeable batteries, the battery pack can generate a certain amount of leakage current along with increase of service time, at the moment, the required input voltage is relatively low, the feedback module 9 collects the output voltage of the output module 11 and the leakage voltage of the battery pack, a feedback signal is formed after the output voltage and the leakage voltage are integrated and processed, the feedback signal is transmitted to the MCU module 3, the MCU module 3 sends a corresponding instruction to the adjusting module 7, and then the adjustable winding transformer module 2 is driven to reduce the voltage of the output end of the transformer, so that the input low voltage of the battery pack is realized, and the battery pack is protected; the display module 10 includes a data reading module and a display module, and the data reading module reads a real-time voltage/current value from the MCU module 3 and displays the voltage/current value through the display module.
The utility model discloses the theory of implementing specifically: the plug of the charger is connected with a household power supply, and at the moment, the LED indicator lamp is lightened to indicate that the charger is normally connected with the household power supply; the voltage is reduced to the required voltage through an adjustable winding transformer module 2 on a circuit board in the charger, and power is supplied to other circuit modules; when the output module 11 is connected with a battery pack, firstly, an infrared sensing detection unit collects signals and transmits the signals to the MCU module 3, the MCU module 3 performs corresponding processing to input a tiny voltage to the output module 11, after a charging contact of the battery pack is contacted with the output module 11, the voltage detection unit and the current detection unit collect corresponding voltage and current signals and transmit the signals to the MCU module 3 for processing and recognition, and after the battery pack is confirmed to be well contacted with the output module 11, the battery pack starts to be charged normally; when high temperature or high pressure is met, the corresponding over-temperature protection module 4 or the corresponding over-voltage protection module 5 carries out power protection; the feedback module 9 collects normal output voltage of the output module 11 at any time, the output voltage is input voltage of a rechargeable battery pack, the battery pack is composed of a plurality of rechargeable batteries, the battery pack can generate a certain amount of electric leakage along with the increase of service time, at the moment, the required input voltage is relatively low, the feedback module 9 collects the output voltage of the output module 11 and the leakage voltage of the battery pack, after the output voltage and the leakage voltage are integrated, a feedback signal is formed and transmitted to the MCU module 3, the MCU module 3 sends a corresponding instruction to the adjusting module 7, the adjustable winding transformer module 2 is driven to reduce the voltage of the output end of the transformer, the input low voltage of the battery pack is realized, and the battery pack is protected; the display module 10 reads a real-time voltage/current value from the MCU module 3 and displays the voltage/current value through the display module.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. A low voltage charger, said charger comprising: the power supply comprises a power supply module, an adjustable winding transformer module, an MCU module, an over-temperature protection module, an over-voltage protection module, a detection module, an adjustment module, an indicator lamp module, a feedback module, a display module and an output module, wherein the input end of the power supply module is connected with a household power supply, the output end of the power supply module is connected with the input end of the adjustable winding transformer module, the output end of the adjustable winding transformer is connected with the MCU module, and the MCU module is respectively connected with the over-temperature protection module, the over-voltage protection module, the detection module, the adjustment module, the indicator lamp module, the feedback module, the display module and the output module.
2. The low voltage charger according to claim 1, wherein said adjustable winding transformer module comprises a constant number of turns primary and a variable number of turns secondary, said constant number of turns primary and said variable number of turns secondary being coupled matched.
3. The low-voltage charger according to claim 1, wherein the detection module comprises a voltage detection unit, a current detection unit and an infrared sensing detection unit, the infrared sensing detection unit identifies the external carrier of the output module, and the voltage detection unit and the current detection unit identify and determine the connection state of the external carrier of the output module.
4. The low-voltage charger according to claim 2, wherein the adjusting module comprises a receiving unit and a driving unit, and the receiving unit is used for receiving an adjusting instruction sent by the MCU module; the driving unit is used for recognizing the adjusting instruction and driving the change of the secondary coil with the variable number of turns according to the corresponding adjusting instruction.
5. The low-voltage charger according to claim 1, wherein the display module comprises a data reading module and a display module, the data reading module reads the real-time voltage/current value from the MCU module and displays the voltage/current value through the display module.
6. The low-voltage charger according to claim 1, wherein said indicator light module is an LED indicator light.
7. The low-voltage charger according to claim 6, wherein said LED indicator light is in a flashing state when the power is turned on and the external carrier is not connected or the external carrier is not stably connected; under the condition of switching on the power supply and when the external carrier is stably connected, the LED indicating lamp is in a long-bright state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120581491.9U CN214380245U (en) | 2021-03-22 | 2021-03-22 | Low-voltage charger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120581491.9U CN214380245U (en) | 2021-03-22 | 2021-03-22 | Low-voltage charger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214380245U true CN214380245U (en) | 2021-10-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120581491.9U Active CN214380245U (en) | 2021-03-22 | 2021-03-22 | Low-voltage charger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214380245U (en) |
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2021
- 2021-03-22 CN CN202120581491.9U patent/CN214380245U/en active Active
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