Novel mobile phone charger

Abstract

The utility model discloses a novel mobile phone charger, and relates to the technical field of chargers. Comprising a face shell, a PCB, a bottom shell, a pressing plate, a contact elastic piece and a pin, the face shell and the bottom shell form an outer shell, the PCB is arranged in the outer shell, and the pressing plate in the outer shell is connected with the pin outside the outer shell through the contact elastic piece. The mobile phone charger is reasonable in structural design, attractive in appearance, capable of being normally used at a low temperature and at a high temperature of 60 DEG C, high in efficiency, high in charging speed, capable of fully charging a mobile phone in half an hour, and convenient to carry, and the output efficiency reaches 88%.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of charger, specifically relates to a novel mobile phone charger. BACKGROUND

[0002] The current market has many kinds of mobile phone chargers, but all have a common shortcoming: once the temperature is too high or too low, the charging efficiency will be affected, the charging efficiency cannot be guaranteed, the charging speed is slow, and it is inconvenient to carry.

[0003] In view of the above, the utility model discloses a novel mobile phone charger that can charge normally at a high temperature of 60 DEG C or at a low temperature. UTILITY MODEL CONTENTS

[0004] In view of the deficiencies in the prior art, the utility model aims to provide a novel mobile phone charger, which has a reasonable structure design, an attractive appearance, can be used normally at a low temperature and a high temperature of 60 DEG C, has high efficiency, an output efficiency of 88%, fast charging speed, and can charge a mobile phone fully in half an hour, and is convenient to carry.

[0005] In order to achieve the above-mentioned purpose, the utility model is realized through the following technical scheme: a novel mobile phone charger, comprising a face shell, a PCB board, a bottom shell, a pressing plate, a contact spring and a plug, the face shell and the bottom shell form an outer shell, the PCB board is arranged in the outer shell, and the pressing plate in the outer shell is connected with the plug outside the outer shell through the contact spring.

[0006] Both ends of the plug are connected with the 1th and 2th pins of the rectifier through the fuse and the thermistor, the 3th and 4th pins of the rectifier are connected with the first electrolytic capacitor, one end of the first resistor and the first inductor in parallel is connected with the 3th pin of the rectifier, the other end of the first resistor and the first inductor in parallel is connected with the positive pole of the second electrolytic capacitor, one end of the second resistor, the 8th pin of the PWM chip and the second electrolytic capacitor, the second inductor is connected with the 4th pin of the rectifier, the other end of the second inductor is connected with the negative pole of the second electrolytic capacitor and the grounding end, the second electrolytic capacitor is also connected with the third electrolytic capacitor, the ninth capacitor and the tenth capacitor in parallel, the second resistor is connected with the first capacitor and the transient suppression diode in parallel, the negative pole of the transient suppression diode is connected with the negative pole of the first diode through the first resistor, the positive pole of the first diode is connected with the 5th and 6th pins of the PWM chip and the primary end of the transformer, the primary end of the transformer is also connected to the 1st pin of the PWM chip through the fourteenth resistor and the fifth resistor, the secondary end of the transformer is connected with the synchronous rectification chip, the synchronous rectification chip is connected with the protocol chip through the ninth resistor and the sixth capacitor through the Vout end, the protocol chip is connected with the USB-A port, the 3rd pin of the PWM chip is connected with the E pole of the switch tube and one end of the third capacitor, and the other end of the third capacitor is grounded.

[0007] The utility model discloses a beneficial effect: at low temperature or high temperature 60C under normal use, high efficiency, output efficiency reaches 88%. Agreement whole: can fill all mobile phones on the market, and the charging speed is fast, and half an hour mobile phone can be full of electricity. Appearance is beautiful, convenient to carry, and the practicality is strong. BRIEF DESCRIPTION OF DRAWINGS

[0008] The utility model discloses in conjunction with the drawings and specific embodiment to explain in detail the utility model in the following;

[0009] Fig. 1 It is the structural diagram of the utility model;

[0010] Fig. 2 It is the circuit schematic diagram of the utility model;

[0011] Fig. 3 It is the circuit diagram of the agreement chip of the utility model. PREFERRED EMBODIMENT

[0012] In order to make the technical means, the creation features, the purpose and the effect of the utility model easy to understand, the utility model is further explained in the following in conjunction with specific embodiment.

[0013] Referring to Figs. 1-3 , the specific embodiment adopts the following technical scheme: a novel mobile phone charger, including face shell 1, PCB board 2, bottom shell 3, pressing plate 4, contact spring piece 5 and spud 6, face shell 1 and bottom shell 3 form the shell, and the shell inside is provided with PCB board 2, and the pressing plate 4 in the shell is connected with the spud 6 outside the shell through contact spring piece 5.

[0014] The two ends of the pin 6 are connected with the 1st and 2nd pins of the rectifier BD1 through the fuse F1 and the thermistor NTC1, the 3rd and 4th pins of the rectifier BD1 are connected with the first electrolytic capacitor CE1, one end of the 16th resistor R16 and the first inductor L1 in parallel is connected with the 3rd pin of the rectifier BD1, the other end of the 16th resistor R16 and the first inductor L1 in parallel is connected with the positive pole of the second electrolytic capacitor CE2, one end of the second resistor R2, and the 8th pin of the PWM chip U1, one end of the second inductor L1A is connected with the 4th pin of the rectifier BD1, the other end of the second inductor L1A is connected with the negative pole of the second electrolytic capacitor CE2 and the ground terminal, the second electrolytic capacitor CE2 is also connected with the third electrolytic capacitor CE3, the ninth capacitor C9, and the tenth capacitor C10 in parallel, the second resistor R2 is connected with the first capacitor C1 and the transient voltage suppression diode TVS in parallel, the negative pole of the transient voltage suppression diode TVS is connected with the negative pole of the first diode D1 through the first resistor R1, the positive pole of the first diode D1 is connected with the 5th and 6th pins of the PWM chip U1 and the primary end of the transformer T1, the primary end of the transformer T1 is also connected to the 1st pin of the PWM chip U1 through the 14th resistor R14 and the 5th resistor R5, the secondary end of the transformer T1 is connected with the synchronous rectification chip U4, the synchronous rectification chip U4 is connected with the protocol chip U3 through the 9th resistor R9 and the 6th capacitor C6 through the Vout terminal, and the protocol chip U3 is connected with the USB-A port. The 3rd pin of the PWM chip U1 is connected with the E pole of the switch tube G1 and one end of the third capacitor C3, and the other end of the third capacitor C3 is grounded.

[0015] It is worth noting that the model of the PWM chip U1 is DK020G.

[0016] It is worth noting that the model of the synchronous rectification chip U4 is DK5V60R15HP.

[0017] In addition, the model of the protocol chip U3 is IP2183.

[0018] The working principle of the embodiment is as follows: first, the alternating voltage is input from both ends of the pin, passes through the fuse F1 and the thermistor NTC1, the function of the fuse is to prevent the damage of the rear-end components and to play the role of insurance disconnection, and the thermistor performs temperature protection. The bridge rectifier BD1 performs bridge rectification to change the alternating current into direct current, and the first electrolytic capacitor CE1, the first inductor L1, the sixteenth resistor R16, the second electrolytic capacitor CE2 and the third electrolytic capacitor CE3 filter the direct current voltage to become a direct current voltage, which is added to the primary of the transformer T1 to the 5th pin and the 6th pin of the PWM chip U1. When the transformer VCC winding voltage reaches the working voltage of the PWM chip U1, the WM chip U1 controls the conduction and cut-off of the internal switch tube of the IC, so that the alternating voltage is induced from the secondary of the transformer, the synchronous rectification chip U4 performs synchronous rectification, and the sixth capacitor C6 and the eighth capacitor C8 filter to become a direct current voltage to the USB A port to charge the mobile phone. The protocol chip U3 is the QC protocol of the power supply, and the protocol chip and the mobile phone charge management.

[0019] The basic principle and main features of the utility model and the advantages of the utility model are shown and described above. It should be understood by those skilled in the art that the utility model is not limited by the above-mentioned embodiments, and the above-mentioned embodiments and the description in the specification are only to illustrate the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model can also have various changes and improvements, and these changes and improvements all fall within the scope of the utility model claimed. The scope of protection of the utility model is defined by the appended claims and their equivalents.

Claims

1. A new type of mobile phone charger characterized by, It comprises a face shell (1), a PCB board (2), a bottom shell (3), a pressing plate (4), a contact spring (5) and a plug (6), the face shell (1) and the bottom shell (3) form an outer shell, the PCB board (2) is arranged inside the outer shell, the pressing plate (4) inside the outer shell is connected with the plug (6) outside the outer shell through the contact spring (5).

2. A new mobile phone charger as claimed in claim 1, wherein, The two ends of the plug (6) are connected with the 1st and 2nd pins of the rectifier (BD1) through the fuse (F1) and the thermistor (NTC1), the 3rd and 4th pins of the rectifier (BD1) are connected with the first electrolytic capacitor (CE1), one end of the parallel connection of the sixteenth resistor (R16) and the first inductor (L1) is connected with the 3rd pin of the rectifier (BD1), the other end of the parallel connection of the sixteenth resistor (R16) and the first inductor (L1) is connected with the positive pole of the second electrolytic capacitor (CE2), one end of the second inductor (L1A) is connected with the 4th pin of the rectifier (BD1), the other end of the second inductor (L1A) is connected with the negative pole of the second electrolytic capacitor (CE2) and the ground, the second electrolytic capacitor (CE2) is also connected with the third electrolytic capacitor (CE3), the ninth capacitor (C9) and the tenth capacitor (C10) in parallel, the second resistor (R2) is connected with the first capacitor (C1) and the transient voltage suppressor (TVS) in parallel, the negative pole of the transient voltage suppressor (TVS) is connected with the negative pole of the first diode (D1) through the first resistor (R1), the positive pole of the first diode (D1) is connected with the 5th and 6th pins of the PWM chip (U1) and the primary end of the transformer (T1), the primary end of the transformer (T1) is also connected to the 1st pin of the PWM chip (U1) through the fourteenth resistor (R14) and the fifth resistor (R5), the secondary end of the transformer (T1) is connected with the synchronous rectification chip (U4), the synchronous rectification chip (U4) is connected with the protocol chip (U3) through the ninth resistor (R9) and the sixth capacitor (C6) through the Vout terminal, the protocol chip (U3) is connected with the USB-A port, the 3rd pin of the PWM chip (U1) is connected with the E pole of the switch tube (G1) and one end of the third capacitor (C3), the other end of the third capacitor (C3) is grounded.

3. A new type of mobile phone charger according to claim 2, characterized in that, The model of the PWM chip (U1) is DK020G.

4. A new mobile phone charger as claimed in claim 2, wherein, The model of the synchronous rectification chip (U4) is DK5V60R15HP.

5. A new mobile phone charger as claimed in claim 2, wherein, The model of the protocol chip (U3) is IP2183.

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