Projector power supply structure
By combining the adjustment module, voltage monitoring module, and pulse charging module, the problem of overcharging the battery in the projector power supply is solved, achieving efficient battery charging protection and extended battery life.
Patent Information
- Application Number
- CN202423201097.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-24
- Publication Date
- 2025-11-25
- Estimated Expiration
- 2034-12-24
AI Technical Summary
In existing projector power supply structures, the battery remains in a charging state for a long time after being powered on, leading to overcharging damage and a shorter lifespan.
It employs an adjustment module, a voltage monitoring module, a pulse charging module, and a charging management module. By monitoring the battery power in real time, it controls the pulse charging mode to avoid overcharging, including the combined use of voltage monitoring, pulse charging, and charging management modules.
It effectively shortens charging time, protects the battery from overcharging, extends its service life, and improves battery health.
Smart Images
Figure CN223599557U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to power supply equipment technical field especially is related to a projector power supply structure. BACKGROUND
[0002] The power supply structure of the projector mainly includes two parts of main working power supply and lamp working power supply, which jointly provide stable and reliable power supply for the projector. The working power supply provides not only the power required for the working circuit of the whole machine, but also a stable DC power supply to ensure the normal work of the projector. However, the existing projector power supply is always in the state of charging and power supply after being powered on, which is easy to cause the overcharging damage of the storage battery and reduce the service life of the storage battery. SUMMARY
[0003] In order to solve the technical defects in the background art, the utility model aims at providing a projector power supply structure.
[0004] In order to achieve the above purpose, the utility model adopts the following technical scheme:
[0005] A projector power supply structure comprises an adjusting module, a voltage monitoring module, a pulse charging module, a charging management module and a storage battery. The input end of the adjusting module is connected with a commercial power input interface. The voltage monitoring module is connected with the storage battery and is used for detecting the power of the battery in real time to obtain the current power of the storage battery. The input end of the pulse charging module is connected with the output end of the adjusting module, and the output end of the pulse charging module is connected with the storage battery. The charging management module is connected with the voltage monitoring module, and the charging management module controls the charging mode of the pulse charging module based on the current power of the storage battery. The storage battery is connected with an external load through a power conversion module.
[0006] Through the above technical scheme, after the storage power supply is powered on and started, the voltage monitoring module detects the battery voltage of the storage battery, judges whether the storage battery is in the state of power shortage, full power or complete power loss, and then controls the corresponding charging mode of the pulse charging module through the charging management module. The pulse charging module can shorten the charging time of the storage battery, effectively protect the storage battery from overcharging and overheating, and prolong the service life of the storage battery.
[0007] Further, the voltage monitoring module comprises a microcontroller, a first resistor, a second resistor and a capacitor.
[0008] Further, when the current power of the battery is in a full power state, the pulse-on stage of the pulse charging module is set to 0.5 seconds, and the pulse-off stage of the pulse charging module is set to 5 seconds.
[0009] Further, the adjusting module comprises a high-frequency transformer, an output rectification filter unit, an output parameter checking unit, a power management unit and a switch tube.
[0010] Further, a set of input rectification filter units are arranged between the input end of the high-frequency transformer and the mains input interface.
[0011] Further, the charging management module comprises a power indicator and a charging indicator.
[0012] In conclusion, the utility model has the advantages that:
[0013] The utility model discloses a power supply structure of projector through the power storage source is on the power and starts work, and voltage monitoring module will carry out battery voltage's detection to the battery, judges that the battery is in the power shortage, full power or completely power shortage state, thereby through the charging management module control pulse charging module starts the corresponding charging mode of battery. Pulse charging module can shorten the charge time of battery, can also effectively protect the battery overcharge and lead to battery overheat, prolong the service life of battery. BRIEF DESCRIPTION OF DRAWINGS
[0014] Figure 1 It is the structure schematic diagram of another visual angle of an embodiment of the utility model's projector power supply structure.
[0015] Figure 2 It is the structure schematic diagram of another visual angle of an embodiment of the utility model's projector power supply structure.
[0016] Explanation of reference numerals in the drawing:
[0017] 1, projector power supply structure, 2, adjusting module, 21, input rectification filter unit, 22, high frequency transformer, 23, output rectification filter unit, 24, output parameter check unit, 25, power management unit, 26, switch tube, 3, voltage monitoring module, 31, microcontroller, R1, first resistance, R2, second resistance, C1, capacitor, 4, pulse charging module, 5, charging management module, 51, power indicator, 52, charging indicator, 6, battery, 7, mains input interface, 8, power conversion module, 9, battery anti self-discharge module. DETAILED DESCRIPTION
[0018] The technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art belong to the scope of protection of the utility model.
[0019] Those skilled in the art should understand that in the disclosure of the utility model, the orientation or positional relationship indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore the above terms cannot be understood as a limitation on the utility model.
[0020] In the description of the utility model, if there is a word such as "several" description, its meaning is one or more, the meaning of multiple is two and above, greater than, less than, exceed etc. are understood as not including the number, above, below, within etc. are understood as including the number. If the first, second, third is described, it is only used for distinguishing technical features for the purpose, and can not be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the sequence of indicated technical features.
[0021] The following will be described in detail in combination with the accompanying drawings Figures 1-2 The embodiment of the utility model is further described in detail.
[0022] A projector power supply structure 1, as shown in Figure 1 , Figure 2 It includes adjusting module 2, voltage monitoring module 3, pulse charging module 4, charging management module 5 and battery 6.The input end of adjusting module is connected with commercial power input interface 7.Voltage monitoring module 3 is connected with battery 6, for detecting the power of battery in real time to obtain the current power of battery 6.The input end of pulse charging module 4 is connected with the output end of adjusting module 2, and the output end of pulse charging module 4 is connected with battery 6.Charging management module 5 is connected with voltage monitoring module 3, and charging management module 5 controls the charging mode of pulse charging module 4 based on the current power of battery 6.Battery 6 is connected with external load through power conversion module 8.
[0023] Wherein, after the starting work of the power supply, voltage monitoring module 3 will detect the battery voltage of battery 6, judges that battery 6 is in the state of power shortage, full power or complete power loss, thereby controls pulse charging module 4 to start the corresponding charging mode of battery through charging management module 5.Pulse charging module 4 can shorten the charging time of battery 6, and can also effectively protect battery 6 from overcharging and overheating, thereby prolonging the service life of battery 6.
[0024] In the embodiment, the voltage monitoring module 3 includes microcontroller 31, first resistor R1, second resistor R2 and capacitor C1.Microcontroller 31 is connected with first resistor R1, second resistor R2 and one end of capacitor C1 simultaneously.The other end of first resistor R1 is connected to GND end, the other end of capacitor C1 is connected to GND end, and the other end of second resistor R2 is connected to BTA end.First resistor R1 and second resistor R2 are responsible for voltage division sampling, so as to convert the voltage of battery 6 into a suitable voltage level for detection, and capacitor C1 is used for filtering, reducing power noise, ensuring the stability of detection signal and improving the accuracy of detection.
[0025] In some embodiments, in order to improve the safety and charging effect of pulse charging, when the current power of the battery 6 is in a full power state, the pulse-on stage of the pulse charging module 4 is set to 0.5 seconds, and the pulse-off stage of the pulse charging module 4 is set to 5 seconds. When the current power of the battery 6 is in a charging state, the pulse-on stage of the pulse charging module 4 is set to 4 seconds, and the pulse-off stage of the pulse charging module 4 is set to 1 second. The pulse charging module 4 can achieve a more efficient and safe charging and discharging process when the battery power is not full or is full. The intermittent working mode reduces the average power output and reduces the heat generation and related safety hazards of the battery 6. Moreover, the regular pause helps to prevent overcharging and protect the circuit elements from damage, thereby prolonging the service life of the battery 6. The charging mode of the pulse charging module 4 can ensure the charging effect while considering the health and safety of the battery.
[0026] The battery anti-self-discharge module 9 is further provided between the pulse charging module 4 and the battery 6, which can effectively prevent the battery from self-discharging when not in use and prolong the service life of the battery.
[0027] In some embodiments, the adjustment module 2 includes a high-frequency transformer 22, an output rectification and filtering unit 23, an output parameter checking unit 24, a power management unit 25, and a switch tube 26. The input end of the high-frequency transformer 22 is connected with the mains input interface 7 and the switch tube 26. The output end of the high-frequency transformer 22 is connected with the input end of the output rectification and filtering unit 23, and the output end of the output rectification and filtering unit 23 is connected with the pulse charging module 4 and the input end of the output parameter checking unit 24. The output end of the output parameter checking unit 24 is connected with the input end of the power management unit 25, and the output end of the power management unit 25 is connected with the switch tube 26 for controlling the opening and closing of the switch tube 26. The adjustment module 2 ensures the stable output of the power supply and the safe operation of the system.
[0028] Specifically, the high-frequency transformer 22 is used for voltage conversion, frequency conversion, and impedance matching. The output rectification and filtering unit 23 can remove or weaken high-frequency noise and harmonic signals in the circuit, making the output signal smoother. The output parameter checking unit 24 can detect output voltage, current, and other parameters for feedback to the power input for adjustment, ensuring the stability and quality of the output power supply. The power management unit 25 generates a PWM signal to drive the switch tube 26 based on the detection of the output parameter checking unit 24, and adjusts the size of the PWM to control the size of the output power, thereby maintaining the stability of the output power supply. The switch tube 26 controls the input and output of the high-frequency transformer 22 based on the instructions of the power management unit 25, adjusts the output voltage and current, and realizes the stable output of the power supply and the on-off of the circuit, with high safety performance.
[0029] The input end of the high-frequency transformer 22 is further connected with a set of input rectification filter units 21, which can convert the alternating current of the commercial power into direct current and perform preliminary filtering to reduce voltage fluctuation and noise.
[0030] In some embodiments, the charging management module 5 comprises a power indicator 51 and a charging indicator 52. The power indicator 51 is used to prompt whether the power is connected. When the power indicator 51 is always on or flashes, it indicates that the power is normally powered on. The charging indicator 52 is used to prompt whether the battery 6 is in the charging state. When the charging indicator 52 is always on or flashes, it indicates that the pulse charging module 4 normally charges the battery 6. When the charging indicator 52 is off, it indicates that the battery 6 is in the full power state, which can intuitively reflect the current charging state of the battery 6 and make the use more convenient.
[0031] The embodiments of the specific implementation are the preferred embodiments of the present application, not limited to the protection scope of the present application, wherein the same parts are indicated by the same reference numerals. Therefore: any equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.
Claims
1. A projector power supply structure, characterized by comprising: The application relates to a pulse charging device for a storage battery, which comprises an adjusting module (2), a voltage monitoring module (3), a pulse charging module (4), a charging management module (5) and a storage battery (6); the input end of the adjusting module is connected with a commercial power input interface (7); the voltage monitoring module (3) is connected with the storage battery (6) and is used for detecting the electric quantity of the battery in real time to obtain the current electric quantity of the storage battery (6); the input end of the pulse charging module (4) is connected with the output end of the adjusting module (2), the output end of the pulse charging module (4) is connected with the storage battery (6), the charging management module (5) is connected with the voltage monitoring module (3), the charging management module (5) controls the charging mode of the pulse charging module (4) based on the current electric quantity of the storage battery (6), and the storage battery (6) is connected with an external load through a power conversion module (8).
2. The projector power structure of claim 1, wherein, The voltage monitoring module (3) comprises a microcontroller (31), a first resistor (R1), a second resistor (R2) and a capacitor (C1); the microcontroller (31) is connected with the first resistor (R1), the second resistor (R2) and one end of the capacitor (C1) simultaneously, the other end of the first resistor (R1) is connected with a GND end, the other end of the capacitor (C1) is connected with a GND end, and the other end of the second resistor (R2) is connected with a BTA end.
3. The projector power structure of claim 1, wherein, When the current electric quantity of the storage battery (6) is in a full-charge state, the pulse-on stage of the pulse charging module (4) is set to 0.5 seconds, and the pulse-off stage of the pulse charging module (4) is set to 5 seconds; when the current electric quantity of the storage battery (6) is in a charging state, the pulse-on stage of the pulse charging module (4) is set to 4 seconds, and the pulse-off stage of the pulse charging module (4) is set to 1 second.
4. The projector power structure of claim 1, wherein, The adjusting module (2) comprises a high-frequency transformer (22), an output rectification filter unit (23), an output parameter checking unit (24), a power management unit (25) and a switch tube (26); the input end of the high-frequency transformer (22) is connected with the commercial power input interface (7) and the switch tube (26); the output end of the high-frequency transformer (22) is connected with the input end of the output rectification filter unit (23), the output end of the output rectification filter unit (23) is connected with the pulse charging module (4) and the input end of the output parameter checking unit (24); the output end of the output parameter checking unit (24) is connected with the input end of the power management unit (25), and the output end of the power management unit (25) is connected with the switch tube (26) and is used for controlling the opening and closing of the switch tube (26).
5. The projector power structure of claim 4, wherein, A set of input rectification filter units (21) are arranged between the input end of the high-frequency transformer (22) and the commercial power input interface (7).
6. The projector power structure of claim 1, wherein, The charging management module (5) comprises a power indicator lamp (51) and a charging indicator lamp (52); the power indicator lamp (51) is used for prompting whether the power is connected; and the charging indicator lamp (52) is used for prompting whether the storage battery (6) is in a charging state.