Multifunctional charging circuit

Abstract

The utility model discloses a multifunctional charging circuit, which comprises a functional circuit and a charging circuit, and the charging circuit comprises a first charging circuit and a second charging circuit. The functional circuit comprises a first switch circuit and a second switch circuit, on-off control is performed on the first switch circuit and the second switch circuit through configuration of a plurality of switches, and each diode in the second switch control circuit is controlled to be normally on through cooperation of a transformer and chips in each circuit, so that illumination is realized. When the charger needs to charge the built-in battery, a first switch in the first switching circuit is correspondingly turned on, at the moment, a first power supply in the first switching circuit starts to charge, the digital display panel displays various parameter values including a clock value, a thermometer value and a hygrometer value, the circuit is controlled through a plurality of chips and the switches, and the charging efficiency is improved. In this way, the charger can be used in various situations, a user can switch the functions of the charger differently, and therefore the practicability of the charging circuit is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of circuits, and in particular to a multifunctional charging circuit. Background Art

[0002] With the rapid development of industrial manufacturing, people have higher and higher functional requirements for circuit boards to achieve circuit operation. Since the existing charging circuit can only charge, it cannot effectively display the clock, temperature value, night light, and emergency lighting during the charging process. The charger cannot automatically power off the electronic equipment during the charging process, which poses a great safety hazard to the electronic equipment after charging. In addition, a large amount of energy is consumed during the charging process. Most chargers cannot truly display clock and temperature and other related functions. Chargers with multiple functions can also facilitate people to use the charger for lighting and emergency in their lives after nightfall. Due to the uneven functions of the chargers, most chargers on the market do not have multi-functions. The charging circuits in existing chargers cannot achieve multi-function regulation. Utility Model Content

[0003] The utility model discloses a multifunctional charging circuit, aiming to overcome the problem that the charging circuit in the existing charger cannot realize multifunctional regulation.

[0004] The utility model discloses a multifunctional charging circuit, the circuit includes a functional circuit and a charging circuit, the charging circuit includes a first charging circuit and a second charging circuit, the functional circuit includes: a first switch circuit and a second switch circuit, a first connector is bridged between the first charging circuit and the first switch circuit, and the first connector is provided with a first connection end and a second connection end at both ends, respectively.

[0005] The first charging circuit includes: a first transformer, a first diode, a first transistor, a second diode, a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a first capacitor, a second capacitor, a third capacitor, and a fourth capacitor. The first connection end of the first connector serves as a starting point of the first charging circuit. The first connection end of the first connector is simultaneously connected to the cathode of the first diode, one end of the first capacitor, one end of the second capacitor, and one end of the second resistor. The other end of the first capacitor is connected to one end of the first resistor. The other end of the first resistor is simultaneously connected to the first connection end of the primary side of the first transformer and the anode of the first diode. The other end of the second capacitor is simultaneously connected to the cathode of the first diode, one end of the first capacitor, one end of the second capacitor, and one end of the second resistor. The second connection end of the primary side of the first transformer and two grounding ends are connected, the other end of the second resistor is connected to the collector of the first transistor, the emitter of the first transistor is simultaneously connected to one end of the fourth resistor, the cathode of the second diode and one end of the fourth resistor, the other end of the fourth resistor is connected to one end of the third capacitor, the third capacitor is simultaneously connected to the other end of the third resistor, the anode of the second diode and one end of the fifth resistor, the other end of the fifth resistor is simultaneously connected to one end of the fourth capacitor, the third connection end of the second diode and a grounding end, and the other end of the fourth capacitor is also connected to one end of the first inductor set in the second charging circuit.

[0006] A multifunctional charging circuit, wherein the second charging circuit comprises: a second connector, a third diode, a fuse, a second transformer, a bridge rectifier diode, a sixth resistor, a seventh resistor, an eighth resistor, a ninth resistor, a fifth capacitor, a sixth capacitor, a seventh capacitor, an eighth capacitor, a ninth capacitor, and a tenth capacitor, wherein a first connection end of the second connector is connected to one end of the fuse, and the other end of the fuse is connected to a first connection end of a secondary side of the second transformer, a second connection end of the second connector is connected to a second connection end of a secondary side of the second transformer, a first connection end of a primary side of the second transformer is connected to a first connection end of the bridge rectifier diode, a second connection end of a primary side of the second transformer is connected to a third connection end of the bridge rectifier diode, and the bridge rectifier diode The second connection end of the bridge rectifier is simultaneously connected to one end of the first inductor, one end of the fifth capacitor, and one end of the sixth resistor. The fourth connection end of the bridge rectifier diode is simultaneously connected to the other end of the fifth capacitor, one end of the sixth capacitor, and a ground terminal. The other end of the sixth capacitor is simultaneously connected to the other end of the sixth resistor, the other end of the first inductor, one end of the seventh resistor, one end of the eighth resistor, one end of the seventh capacitor, and the first connection end of the secondary side of the second transformer. The second connection end of the secondary side of the second transformer is simultaneously connected to the positive electrode of the third diode, the negative electrode of the third diode is simultaneously connected to the other end of the eighth resistor and one end of the ninth resistor. The other end of the ninth resistor is connected to the other end of the seventh capacitor.

[0007] A multifunctional charging circuit, wherein one side of the second charging circuit is also connected to a control circuit, and the control circuit includes: a first control chip, a fourth diode, a fifth diode, a first MOS tube, a tenth resistor, an eleventh resistor, a twelfth resistor, a thirteenth resistor, an eighth capacitor, a ninth capacitor, and a second inductor, wherein the G port of the first control chip is connected to one end of the tenth resistor, the other end of the tenth resistor is connected to the gate of the first MOS tube, the drain of the first MOS tube is connected to the negative electrode of the third diode in the second charging circuit, and the drain of the first MOS tube is also connected to the second connection end of the secondary side of the second transformer in the second charging circuit, the CS port of the first control chip is simultaneously connected to the source of the first MOS tube and one end of the eleventh resistor, and the GND port of the first control chip is simultaneously connected to the other end of the eleventh resistor, the The cathode of the fifth diode, one end of the eighth capacitor, one end of the ninth capacitor, one end of the thirteenth resistor, one end of the second inductor and a ground terminal, the FB port of the first control chip is simultaneously connected to the anode of the fourth diode and the other end of the eighth capacitor, the VDET port of the first control chip is simultaneously connected to one end of the thirteenth resistor and one end of the twelfth resistor, the other end of the twelfth resistor is connected to one end of the second inductor and the anode of the third diode, the other end of the thirteenth resistor is connected to the other end of the second inductor, the VDD port of the first control chip is simultaneously connected to the cathode of the third diode, the cathode of the fourth diode, the other end of the ninth capacitor and the other end of the seventh resistor in the second charging circuit, and the anode of the fourth diode is simultaneously connected to the other end of the twelfth resistor and one end of the second inductor.

[0008] A multifunctional charging circuit, wherein the first switch circuit comprises: a second control chip, a sixth diode, a seventh diode, a third inductor, a first power supply, a tenth capacitor, an eleventh capacitor, a twelfth capacitor, a thirteenth capacitor, a fourteenth resistor, a fifteenth resistor, a sixteenth resistor, and a first switch, the second output end of the first connector serves as a starting point of the first switch circuit, the second output end of the first connector is simultaneously connected to one end of the tenth capacitor, one end of the eleventh capacitor, one end of the fourteenth resistor, and a VCC port of the second control chip, the other end of the eleventh capacitor is connected to the VGATE port of the second control chip, the other end of the tenth capacitor is simultaneously connected to two ground ends, one end of the twelfth capacitor, one end of the sixteenth resistor, the thirteenth capacitor The GND end of the second control chip is grounded, the other end of the twelfth capacitor is connected to the EN / CT port of the second control chip, the other end of the sixteenth resistor is simultaneously connected to the FB port of the second control chip and one end of the fifteenth resistor, the VSENSE port of the second control chip is simultaneously connected to the anode of the sixth diode and the other end of the fourteenth resistor, the cathode of the sixth diode is simultaneously connected to the cathode of the seventh diode and one end of the third inductor, the anode of the seventh diode is grounded, the other end of the third inductor is simultaneously connected to the other end of the fifteenth resistor, one end of the first switch and the other end of the thirteenth capacitor, and the other end of the first switch is connected to the positive electrode of the first power supply.

[0009] A multifunctional charging circuit, wherein the second switch circuit comprises: a second switch, an eighth diode, a ninth diode, a tenth diode, a third control chip and a fourth control chip, the other end of the first switch provided in the first switch circuit is simultaneously connected to one end of the second switch, the other end of the second switch is connected to the positive electrode of the eighth diode, the negative electrode of the eighth diode is connected to the positive electrode of the ninth diode, the negative electrode of the ninth diode is connected to the positive electrode of the tenth diode, the negative electrode of the tenth diode is connected to the negative electrode of the first power supply provided in the first switch circuit, and the third control chip and the fourth control chip are respectively arranged in parallel on one side of the second switch.

[0010] A multifunctional charging circuit, wherein the eighth diode, the ninth diode and the tenth diode are all light emitting diodes.

[0011] A multifunctional charging circuit, wherein one side of the fourth control chip is connected to a digital display board.

[0012] A multifunctional charging circuit, wherein the first MOS tube is a field effect depletion type N-MOS tube.

[0013] A multifunctional charging circuit, wherein the first transistor is a photosensitive transistor.

[0014] A multifunctional charging circuit, wherein the digital display board is composed of a plurality of black display tubes, and the black display tubes form an "8"-shaped display unit, and a digital display board can include one or more display units.

[0015] Compared with the prior art, the utility model has the following advantages:

[0016] The utility model discloses a multifunctional charging circuit, the circuit comprises a functional circuit and a charging circuit, the charging circuit comprises a first charging circuit and a second charging circuit, the functional circuit comprises: a first switch circuit and a second switch circuit, a plurality of switches are configured to control the on-off of the first switch circuit and the second switch circuit, a transformer and chips in each circuit are cooperated to control each diode in the second switch control circuit to be always on, so as to realize lighting, when the charger needs to charge the built-in battery, the first switch in the first switch circuit is correspondingly turned on, at which time the first power supply in the first switch circuit starts to charge, and the digital display board displays various parameter values ​​including: clock, temperature count value, humidity count value, this setting mode controls the circuit through a plurality of chips and switches, so as to realize the use of the charger in a variety of scenarios, the user can switch the functions of the charger in different ways, and improve the practicality of the charging circuit. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] 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.

[0018] Figure 1 An overall circuit diagram of a first charging circuit in a multifunctional charging circuit provided in an embodiment of the utility model;

[0019] Figure 2 An overall circuit diagram of a second charging circuit and a control circuit in a multifunctional charging circuit provided by an embodiment of the utility model;

[0020] Figure 3 An overall circuit diagram of a first switch circuit and a second switch circuit in a multifunctional charging circuit provided in an embodiment of the utility model;

[0021] Figure 4 A top view of a digital display board on one side of a fourth control chip in a multifunctional charging circuit provided in an embodiment of the utility model.

[0022] A first charging circuit S1, a second charging circuit S2, a control circuit S3, a first switch circuit S4, and a second switch circuit S5;

[0023] A first power source V1, a first MOS tube M1, a first switch K1, a second switch K2, and a fuse F1;

[0024] A first transformer T1, a second transformer T2, a first connection end J1 of a first connector, a second connection end J2 of a first connector, a first connection end J3 of a second connector, and a second connection end J4 of a second connector;

[0025] A first inductor L1, a second inductor L2, a third inductor L3, a first control chip U1, a second control chip U2, a third control chip U3, and a fourth control chip U4;

[0026] Bridge rectifier diode BD, first diode D1, second diode D2, third diode D3, fourth diode D4, fifth diode D5, sixth diode D6, seventh diode D7, eighth diode D8, ninth diode D9, tenth diode D10, first transistor QVT1;

[0027] a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, an eighth resistor R8, a ninth resistor R9, a tenth resistor R10, an eleventh resistor R11, a twelfth resistor R12, a thirteenth resistor R13, a fourteenth resistor R14, a fifteenth resistor R15, and a sixteenth resistor R16;

[0028] The first capacitor C1, the second capacitor C2, the third capacitor C3, the fourth capacitor C4, the fifth capacitor C5, the sixth capacitor C6, the seventh capacitor C7, the eighth capacitor C8, the ninth capacitor C9, the tenth capacitor C10, the eleventh capacitor C11, the twelfth capacitor C12, and the thirteenth capacitor C13. DETAILED DESCRIPTION

[0029] 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.

[0030] 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, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or combinations thereof.

[0031] It should also be understood that the terms used in the 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, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include plural forms.

[0032] It should be further understood that the term “and / or” used in the present specification and the appended claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0033] See also Figure 1 , Figure 2 as well as Figure 3 As shown in the figure, a multifunctional charging circuit disclosed by the utility model includes a functional circuit and a charging circuit. The charging circuit includes a first charging circuit S1 and a second charging circuit S2. The functional circuit includes: a first switch circuit S4 and a second switch circuit S5. A first connector (not shown in the figure) is bridged between the first charging circuit S1 and the first switch circuit S4, and a first connection end J1 and a second connection end J2 are respectively provided at two ends of the first connector.

[0034] The first charging circuit S1 includes: a first transformer T1, a first diode D1, a first transistor QVT1, a second diode D2, a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a first capacitor C1, a second capacitor C2, a third capacitor C3, and a fourth capacitor C4. The first connection end J1 of the first connector serves as a starting point of the first charging circuit S1. The first connection end J1 of the first connector is simultaneously connected to the cathode of the first diode D1, one end of the first capacitor C1, one end of the second capacitor C2, and one end of the second resistor R1. The other end of the first capacitor C1 is connected to one end of the first resistor R1. The other end of the first resistor R1 is simultaneously connected to the first connection end of the primary side of the first transformer T1 and the anode of the first diode D1. The second capacitor The other end of C2 is simultaneously connected to the second connection end of the primary side of the first transformer T1 and two grounding ends, the other end of the second resistor R1 is connected to the collector of the first transistor QVT1, the emitter of the first transistor QVT1 is simultaneously connected to one end of the fourth resistor R4, the first connection end of the second diode D2, and one end of the fourth resistor R4, the other end of the fourth resistor R4 is connected to one end of the third capacitor C3, the third capacitor C3 is simultaneously connected to the other end of the third resistor R3, the cathode of the second diode D2, and one end of the fifth resistor R5, the other end of the fifth resistor R5 is simultaneously connected to one end of the fourth capacitor C4, the anode of the second diode D2, and a grounding end, and the other end of the fourth capacitor C4 is also connected to one end of the first inductor provided in the second charging circuit S2.

[0035] Specifically, in the embodiment of the present solution, the multifunctional charging circuit is suitable for functional use in multiple scenarios. First, the two ports (J3 and J4 ports) of the second connector of the second charging circuit S2 are electrically connected to the socket respectively. After the electrical connection is made, the current passes through the second charging circuit S2, the first charging circuit S1, the first switch circuit S4, and the second switch circuit S5 in sequence. The digital display board set on the side of the fourth control chip U4 in the second switch circuit S5 displays the current parameter values. The third control chip U3 collects various parameter value information (such as the current clock, temperature count value, humidity count value), so that the digital display board can display in real time. The second switch circuit S5 is provided with a plurality of light-emitting diodes (eighth diode D8, ninth diode D9, tenth diode D10) in parallel. Each light-emitting diode has different specifications. The plurality of light-emitting diodes of different specifications are suitable for different scenarios. By regulating the first control chip U1, the first transformer T1 and the second transformer T2 are further controlled to perform voltage transformation processing, so that each light-emitting diode can effectively illuminate in the night scene, which is convenient for users to use lighting at the same time at night.

[0036] Furthermore, the second charging circuit S2 is provided with a first transformer T1 and an inductor coil. The first transformer T1 converts the rated voltage 220V output by the socket. The first control chip U1 is used to adjust the voltage to output the voltage to the third control chip U3 provided in the second switch circuit S5, so that the light-emitting diode emits light in different degrees to realize the multi-functional use of the charger. When the user turns on the second switch K2, at this time, the digital display board on the side of the fourth control chip U4 can display the current parameter values ​​(current clock, temperature count value, humidity count value) in real time. When the user turns on the first switch K1, at this time, the voltage is used for charging the built-in battery (first power supply V1). In one embodiment, the first power supply V1 is a built-in charger. The built-in battery in the appliance, when the charger is electrically connected to an external electronic device through a data cable, defaults to the first charging mode. When the charger needs to be used in a scenario where the emergency light needs to be turned on, the second switch K2 is turned on accordingly. At this time, the light-emitting diode in the second switch control circuit S3 (the emergency light is always on). When the charger needs to charge the built-in battery, the first switch K1 is turned on accordingly. At this time, the built-in battery in the charger (the first power supply V1) starts to charge, and various parameter values ​​(current clock, temperature count value, humidity count value) are displayed on the digital display board. The power supply of the third control chip, the fourth control chip and the digital display board all come from the built-in battery. This setting method uses the built-in battery for power supply to realize the use of the charger in a variety of different scenarios.

[0037] See also Figure 2As shown in the figure, the second charging circuit S2 includes: a second connector (not marked in the figure), a third diode D3, a fuse F1, a second transformer T2, a bridge rectifier diode BD, a sixth resistor R6, a seventh resistor R7, an eighth resistor R8, a ninth resistor R9, a fifth capacitor C5, a sixth capacitor C6, a seventh capacitor C7, an eighth capacitor C8, a ninth capacitor C9, and a tenth capacitor C10. The first connection end J3 of the second connector is connected to one end of the fuse F1, and the other end of the fuse F1 is connected to the first connection end of the secondary side of the second transformer T2. The second connection end J4 of the second connector is connected to the second connection end of the secondary side of the second transformer T2. The first connection end of the primary side of the second transformer T2 is connected to the first connection end of the bridge rectifier diode BD, and the second connection end of the primary side of the second transformer T2 is connected to the third connection end of the bridge rectifier diode BD. The second connection end of the bridge rectifier diode BD is simultaneously connected to one end of the first inductor L1, one end of the fifth capacitor C5, and one end of the sixth resistor R6; the fourth connection end of the bridge rectifier diode BD is simultaneously connected to the other end of the fifth capacitor C5, one end of the sixth capacitor C6, and a ground terminal GND; the other end of the sixth capacitor C6 is simultaneously connected to the other end of the sixth resistor R6, the other end of the first inductor L1, one end of the seventh resistor R7, one end of the eighth resistor R8, one end of the seventh capacitor C7, and the first connection end of the secondary side of the second transformer T2; the second connection end of the secondary side of the second transformer T2 is simultaneously connected to the positive electrode of the third diode D3, the negative electrode of the third diode D3 is simultaneously connected to the other end of the eighth resistor R8 and one end of the ninth resistor R9; the other end of the ninth resistor R9 is connected to the other end of the seventh capacitor C7.

[0038] Specifically, in the embodiment of the present scheme, a second connector is provided on one side of the second charging circuit S2, and the second connector consists of two ends J3 and J3. In one embodiment, the two ends of the second connector are used to connect to the power socket, and the second connector is electrically connected to the second transformer T2 and the bridge rectifier diode BD at the same time. The second transformer T2 directly steps down the rated voltage input to the second connector, and transmits the voltage to one side of the first charging circuit S1 for use by the functional circuit. Since the bridge rectifier diode BD provided on one side of the second transformer T2 has two characteristics at the same time, the first characteristic is that the bridge rectifier diode BD has a good rectification effect and can quickly and reliably convert the AC current into a stable DC current. The second characteristic is that the bridge rectifier diode BD cooperates with the multiple ports of the first control chip U1 in the control circuit S3 to perform power-on control, which greatly reduces the influence of the large current on the functional circuit and reduces the probability of the large current interfering with the normal operation of each component in the functional circuit.

[0039] Furthermore, in one embodiment, the two connection ends (J3 and J4) of the second connector are respectively connected to the two copper core jacks of the power socket to make an effective electrical connection between the charging circuit and the power supply, thereby making the entire circuit safe for electricity use.

[0040] See also Figure 2 As shown in the figure, one side of the second charging circuit S2 is also connected to a control circuit S3, and the control circuit includes: a first control chip U1, a fourth diode D4, a fifth diode D5, a first MOS tube M1, a tenth resistor R10, an eleventh resistor R11, a twelfth resistor R12, a thirteenth resistor R13, an eighth capacitor C8, a ninth capacitor C9, and a second inductor L2. The G port of the first control chip U1 is connected to one end of the tenth resistor R10, and the other end of the tenth resistor R10 is connected to the gate of the first MOS tube M1. The drain of the first MOS tube M1 is connected to the negative electrode of the third diode D3 in the second charging circuit S2. At the same time, the drain of the first MOS tube M1 is also connected to the second connection end of the secondary side of the second transformer T2 in the second charging circuit S2. The CS port of the first control chip U1 is simultaneously connected to the source of the first MOS tube and one end of the eleventh resistor R11. The GND port of the first control chip is simultaneously connected to the other end of the eleventh resistor R11, the The cathode of the fifth diode D5, one end of the eighth capacitor C8, one end of the ninth capacitor C9, one end of the thirteenth resistor R13, one end of the second inductor L2 and a ground terminal, the FB port of the first control chip U1 is simultaneously connected to the anode of the fourth diode D4 and the other end of the eighth capacitor C8, the VDET port of the first control chip U1 is simultaneously connected to one end of the thirteenth resistor R13 and one end of the twelfth resistor R12, the other end of the twelfth resistor R12 is connected to one end of the second inductor L2 and the anode of the third diode D3, the other end of the thirteenth resistor R13 is connected to the other end of the second inductor L2, the VDD port of the first control chip U1 is simultaneously connected to the cathode of the third diode D3, the cathode of the fourth diode D4, the other end of the ninth capacitor C9 and the other end of the seventh resistor R7 in the second charging circuit S2, and the anode of the fourth diode D4 is simultaneously connected to the other end of the twelfth resistor R12 and one end of the second inductor L2.

[0041] Specifically, in the embodiment of the present scheme, the first control chip U1 is a voltage division control chip, and the G port of the first control chip U1 is bridged with the first transformer T1 through the drain of the first MOS tube M1, so as to facilitate voltage control of the functional circuit arranged on the other side. The (CS port, GND port and FB port) of the first control chip U1 are all bridged with the source of the first MOS tube M1. When a surge current appears on one side of the bridge rectifier diode BD provided in the second charging circuit S2, it is directly short-circuited to a ground terminal, which greatly reduces the probability of circuit damage caused by the surge current, improves the overall power stability of the circuit, facilitates the functional circuit to cope with various scenarios, and the user can switch functions in real time in various scenarios.

[0042] Furthermore, in one embodiment, the first inductor L1 arranged in series on one side of the twelfth resistor R12 is a protection coil. When the first control chip U1 senses the presence of a surge current on one side of the bridge rectifier diode BD, the first MOS tube M1 is turned on at the first time to allow the surge current to be grounded through one side of the first inductor L1, thereby reducing the impact of the surge current on the functional circuit, thereby improving the reliability of the overall operation of the circuit to achieve multi-functional regulation of the charger.

[0043] See also Figure 3, as shown in the figure, wherein the first switch circuit includes: a second control chip U2, a sixth diode D6, a seventh diode D7, a third inductor L3, a first power supply V1, a tenth capacitor C10, an eleventh capacitor C11, a twelfth capacitor C12, a thirteenth capacitor C13, a fourteenth resistor R14, a fifteenth resistor R15, a sixteenth resistor R16, a first switch K1, a second output end J2 of the first connector is used as the starting point of the first switch circuit S5, the second output end J2 of the first connector is simultaneously connected to one end of the tenth capacitor C10, one end of the eleventh capacitor C11, one end of the fourteenth resistor R14 and the VCC port of the second control chip U2, the other end of the eleventh capacitor C11 is connected to the VGATE port of the second control chip U2, the other end of the tenth capacitor C10 is simultaneously connected to two ground ends, one end of the twelfth capacitor C12, one end of the sixteenth resistor R16, the One end of the thirteenth capacitor C13 and the negative electrode of the first power supply V1, the GND end of the second control chip U2 is grounded, the other end of the twelfth capacitor C12 is connected to the EN / CT port of the second control chip U2, the other end of the sixteenth resistor R16 is simultaneously connected to the FB port of the second control chip U2 and one end of the fifteenth resistor R15, the VSENSE port of the second control chip U2 is simultaneously connected to the positive electrode of the sixth diode D6 and the other end of the fourteenth resistor R14, the negative electrode of the sixth diode D6 is simultaneously connected to the negative electrode of the seventh diode D7 and one end of the third inductor L3, the positive electrode of the seventh diode D7 is grounded, the other end of the third inductor L3 is simultaneously connected to the other end of the fifteenth resistor R15, one end of the first switch K1 and the other end of the thirteenth capacitor C13, and the other end of the first switch K1 is connected to the positive electrode of the first power supply V1.

[0044] Specifically, in the embodiment of the present scheme, the first switch circuit S4 is provided with a second control chip U2, and the second control chip U2 is a functional control chip. The (VCC port, VGATTE port and VSENSE port) of the second control chip U2 are respectively electrically connected to the second connection port of the first connector to control the regulation of the voltage output to one side of the first switch circuit S4, and output the low-level voltage to the corresponding port to achieve rapid switching of functions. In one embodiment, the first switch circuit S4 is provided with a first switch K1 for charging the first power supply V1. The first power supply V1 as a whole is a rechargeable battery. The rechargeable battery as a whole is used to power the digital display board and the light-emitting diodes (the seventh diode D7, the eighth diode D8, and the ninth diode D9). When the rechargeable battery is charged, the FB port of the second control chip U2 is automatically closed to control the rechargeable battery to prevent the rechargeable battery from being overcharged and affecting the normal use of the functional circuit as a whole, thereby improving the reliability of the circuit for multi-scenario use.

[0045] Furthermore, a plurality of ground terminals are provided on one side of the first switch circuit S4 to prevent overcharging of the rechargeable battery from affecting the normal operation of the second switch circuit S5 provided on the other side. This arrangement further improves the reliability of the circuit for use in multiple scenarios.

[0046] See also Figure 3 As shown in the figure, the second switch circuit S5 includes: a second switch K2, an eighth diode D8, a ninth diode D9, a tenth diode D10, a third control chip U3 and a fourth control chip U4, the other end of the first switch K1 provided in the first switch circuit S5 is simultaneously connected to one end of the second switch K2, the other end of the second switch K2 is connected to the anode of the eighth diode D8, the cathode of the eighth diode D8 is connected to the anode of the ninth diode D9, the cathode of the ninth diode D9 is connected to the anode of the tenth diode D10, the cathode of the tenth diode D10 is connected to the cathode of the first power supply V1 provided in the first switch circuit S4, and the third control chip U3 and the fourth control chip U4 are respectively provided in parallel on one side of the second switch K2.

[0047] Specifically, in the embodiment of the present scheme, a third control chip U3 and a fourth control chip U4 are provided in the second switch circuit S5. The third control chip U3 is directly electrically connected to the fourth control chip U4. The digital display board on one side of the fourth control chip U4 is controlled by the second switch K2 for display, so as to realize the use of the digital display board in multiple scenarios. Since a plurality of display units are provided in the digital display board, each display unit displays different parameters. In one embodiment, a plurality of buttons are provided at the lower end of the digital display board on the charger, so as to quickly display the corresponding parameter values ​​(current clock, temperature count value, humidity count value) after the user presses different buttons. This setting method enables the charger to be used in a variety of different scenarios according to the needs of the user by pressing different buttons on the charger, thereby greatly improving the overall practicality of the charger.

[0048] See also Figure 3 As shown in the figure, the eighth diode D8, the ninth diode D9 and the tenth diode D10 are all light emitting diodes.

[0049] Specifically, in the embodiment of the present scheme, the eighth diode D8, the ninth diode D9 and the tenth diode D10 provided in the second switch circuit S5 are all light-emitting diodes, and the three light-emitting diodes are LED lamp beads. In one embodiment, when the user turns on the second switch K2 provided in the second switch circuit S5, the three LED lamp beads provided in parallel on one side of the first power supply V1 all start to emit light. This setting method, by providing multiple light-emitting diodes, allows the user to illuminate in a dark environment. The user can selectively directly press the corresponding button provided on the charger, so as to facilitate the user to switch functions in different scenarios, so as to improve the reliability of the overall use of the charging circuit.

[0050] See also Figure 3 as well as Figure 4 As shown in the figure, one side of the fourth control chip U4 is connected to a digital display board (not numbered in the figure).

[0051] Specifically, in an embodiment of the present scheme, a digital display board is connected to one side of the fourth control chip U4. In one embodiment, the third control chip U3 directly summarizes the various parameter information collected, and accurately displays the summarized parameter information through the digital display board connected to the fourth control chip. When the user needs to view any current parameter value (current clock, temperature count value, humidity count value), it is only necessary to set the first switch K1 of the first switch circuit S4 to open. At this time, after the digital display board is powered on, the third control chip U3 collects data and displays it through multiple black display tubes set on the digital display board, so that the user can view each parameter value, so as to realize switching of the charging circuit in multiple scenarios and improve the overall convenience of the charger.

[0052] See also Figure 2 , as shown in the figure, wherein the first MOS tube M1 is a field effect depletion type N-MOS tube.

[0053] Specifically, in the embodiment of the present scheme, the first MOS tube M1 is a field effect depletion type N-MOS tube, the drain of the first MOS tube M1 is electrically connected to the first inductor L1 and one end of the first transformer T1 at the same time, the gate of the first MOS tube M1 is connected to the G port of the first control chip U1, and the source of the first MOS tube M1 is bridged to the CS port of the first control chip U1, multiple capacitors (the eighth capacitor C8, the ninth capacitor C9) and multiple resistors (the eleventh resistor R11, the thirteenth resistor R13), the first MOS tube M1 mainly cooperates with the first control chip U1 to control the on-off of the large current on one side of the bridge rectifier diode BD, to prevent a large surge current from being generated when the first connector is plugged into the socket, thereby affecting the normal operation of the entire circuit, and the first MOS tube M1 plays a certain degree of protection during the electrical connection process, thereby improving the reliability of the overall use of the circuit.

[0054] See also Figure 1 , as shown in the figure, wherein the first transistor QVT1 is a photosensitive transistor.

[0055] Specifically, in the embodiment of the present scheme, the first transistor QVT1 is a photosensitive transistor, and the photosensitive transistor QVT1 is used to remotely control the second switch circuit S5. In one embodiment, during the charging process of the external electronic device, if the battery of the external electronic device is already fully charged, a second diode D2 (light-emitting diode) is set on one side of the first control chip U1 to emit light to prompt the user that the electronic device is already in a fully charged state. This setting method improves the reliability of the circuit in multiple scenarios and further improves the overall practicality of the charging circuit.

[0056] See also Figure 3 as well as Figure 4 As shown in the figure, the digital display board (not shown in the figure) is composed of a plurality of black display tubes, and the black display tubes form an "8"-shaped display unit, so a digital display board may include one or more display units.

[0057] Specifically, in the embodiment of the present scheme, the digital display board is composed of a plurality of black display tubes, and the black display tubes form an "8"-shaped display unit, so a digital display board may include one or more display units. In one embodiment, when the user needs to view any current parameter value (current clock, temperature count value, humidity count value), it is only necessary to set the first switch circuit S4 to open the first switch K1. At this time, after the digital display board is powered on, the third control chip performs data collection and displays it through the plurality of black display tubes set on the digital display board, so that the user can view each parameter value conveniently, so as to realize the switching of the charging circuit in multiple scenarios and improve the overall convenience of the charger.

[0058] The utility model discloses a multifunctional charging circuit, the circuit comprises a functional circuit and a charging circuit, the charging circuit comprises a first charging circuit and a second charging circuit, the functional circuit comprises: a first switch circuit and a second switch circuit, a plurality of switches are configured to control the on-off of the first switch circuit and the second switch circuit, a transformer and chips in each circuit are cooperated to control each diode in the second switch control circuit to be always on, so as to realize lighting, when the charger needs to charge the built-in battery, the first switch in the first switch circuit is correspondingly turned on, at which time the first power supply in the first switch circuit starts to charge, and the digital display board displays various parameter values ​​including: clock, temperature count value, humidity count value, this setting mode controls the circuit through a plurality of chips and switches, so as to realize the use of the charger in a variety of scenarios, the user can switch the functions of the charger in different ways, and improve the practicality of the charging circuit.

[0059] 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. A multifunctional charging circuit, characterized in that: The circuit includes a functional circuit and a charging circuit, the charging circuit includes a first charging circuit and a second charging circuit, the functional circuit includes: a first switch circuit and a second switch circuit, a first connector is bridged between the first charging circuit and the first switch circuit, and the first connector is provided with a first connection end and a second connection end at both ends, respectively: The first charging circuit includes: a first transformer, a first diode, a first transistor, a second diode, a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a first capacitor, a second capacitor, a third capacitor, and a fourth capacitor. The first connection end of the first connector serves as a starting point of the first charging circuit. The first connection end of the first connector is simultaneously connected to the cathode of the first diode, one end of the first capacitor, one end of the second capacitor, and one end of the second resistor. The other end of the first capacitor is connected to one end of the first resistor. The other end of the first resistor is simultaneously connected to the first connection end of the primary side of the first transformer and the anode of the first diode. The other end of the second capacitor is simultaneously connected to the cathode of the first diode, one end of the first capacitor, one end of the second capacitor, and one end of the second resistor. The second connection end of the primary side of the first transformer and two grounding ends are connected, the other end of the second resistor is connected to the collector of the first transistor, the emitter of the first transistor is simultaneously connected to one end of the fourth resistor, the cathode of the second diode and one end of the fourth resistor, the other end of the fourth resistor is connected to one end of the third capacitor, the third capacitor is simultaneously connected to the other end of the third resistor, the anode of the second diode and one end of the fifth resistor, the other end of the fifth resistor is simultaneously connected to one end of the fourth capacitor, the third connection end of the second diode and a grounding end, and the other end of the fourth capacitor is also connected to one end of the first inductor set in the second charging circuit.

2. A multifunctional charging circuit according to claim 1, characterized in that: The second charging circuit includes: a second connector, a third diode, a fuse, a second transformer, a bridge rectifier diode, a sixth resistor, a seventh resistor, an eighth resistor, a ninth resistor, a fifth capacitor, a sixth capacitor, a seventh capacitor, an eighth capacitor, a ninth capacitor, and a tenth capacitor, wherein a first connection end of the second connector is connected to one end of the fuse, and the other end of the fuse is connected to a first connection end of a secondary side of the second transformer, a second connection end of the second connector is connected to a second connection end of a secondary side of the second transformer, a first connection end of a primary side of the second transformer is connected to a first connection end of the bridge rectifier diode, a second connection end of a primary side of the second transformer is connected to a third connection end of the bridge rectifier diode, and a second connection end of the bridge rectifier diode is connected to a The first connection end is simultaneously connected to one end of the first inductor, one end of the fifth capacitor, and one end of the sixth resistor. The fourth connection end of the bridge rectifier diode is simultaneously connected to the other end of the fifth capacitor, one end of the sixth capacitor, and a ground terminal. The other end of the sixth capacitor is simultaneously connected to the other end of the sixth resistor, the other end of the first inductor, one end of the seventh resistor, one end of the eighth resistor, one end of the seventh capacitor, and the first connection end of the secondary side of the second transformer. The second connection end of the secondary side of the second transformer is simultaneously connected to the positive electrode of the third diode, the negative electrode of the third diode is simultaneously connected to the other end of the eighth resistor and one end of the ninth resistor. The other end of the ninth resistor is connected to the other end of the seventh capacitor.

3. A multifunctional charging circuit according to claim 1, characterized in that: One side of the second charging circuit is also connected to a control circuit, and the control circuit includes: a first control chip, a fourth diode, a fifth diode, a first MOS tube, a tenth resistor, an eleventh resistor, a twelfth resistor, a thirteenth resistor, an eighth capacitor, a ninth capacitor, and a second inductor. The G port of the first control chip is connected to one end of the tenth resistor, and the other end of the tenth resistor is connected to the gate of the first MOS tube. The drain of the first MOS tube is connected to the negative electrode of the third diode in the second charging circuit, and the drain of the first MOS tube is also connected to the second connection end of the secondary side of the second transformer in the second charging circuit. The CS port of the first control chip is simultaneously connected to the source of the first MOS tube and one end of the eleventh resistor. The GND port of the first control chip is simultaneously connected to the other end of the eleventh resistor, the a negative electrode, one end of the eighth capacitor, one end of the ninth capacitor, one end of the thirteenth resistor, one end of the second inductor and a ground terminal, the FB port of the first control chip is simultaneously connected to the anode of the fourth diode and the other end of the eighth capacitor, the VDET port of the first control chip is simultaneously connected to one end of the thirteenth resistor and one end of the twelfth resistor, the other end of the twelfth resistor is connected to one end of the second inductor and the anode of the third diode, the other end of the thirteenth resistor is connected to the other end of the second inductor, the VDD port of the first control chip is simultaneously connected to the cathode of the third diode, the cathode of the fourth diode, the other end of the ninth capacitor and the other end of the seventh resistor in the second charging circuit, and the anode of the fourth diode is simultaneously connected to the other end of the twelfth resistor and one end of the second inductor.

4. A multifunctional charging circuit according to claim 1, characterized in that: The first switch circuit includes: a second control chip, a sixth diode, a seventh diode, a third inductor, a first power supply, a tenth capacitor, an eleventh capacitor, a twelfth capacitor, a thirteenth capacitor, a fourteenth resistor, a fifteenth resistor, a sixteenth resistor, and a first switch. The second output end of the first connector serves as a starting point of the first switch circuit. The second output end of the first connector is simultaneously connected to one end of the tenth capacitor, one end of the eleventh capacitor, one end of the fourteenth resistor, and a VCC port of the second control chip. The other end of the eleventh capacitor is connected to the VGATE port of the second control chip. The other end of the tenth capacitor is simultaneously connected to two ground ends, one end of the twelfth capacitor, one end of the sixteenth resistor, one end of the thirteenth capacitor, and the VCC port of the second control chip. The negative electrode of the first power supply is connected to the GND end of the second control chip is grounded, the other end of the twelfth capacitor is connected to the EN / CT port of the second control chip, the other end of the sixteenth resistor is simultaneously connected to the FB port of the second control chip and one end of the fifteenth resistor, the VSENSE port of the second control chip is simultaneously connected to the anode of the sixth diode and the other end of the fourteenth resistor, the cathode of the sixth diode is simultaneously connected to the cathode of the seventh diode and one end of the third inductor, the anode of the seventh diode is grounded, the other end of the third inductor is simultaneously connected to the other end of the fifteenth resistor, one end of the first switch and the other end of the thirteenth capacitor, and the other end of the first switch is connected to the positive electrode of the first power supply.

5. A multifunctional charging circuit according to claim 1, characterized in that: The second switch circuit includes: a second switch, an eighth diode, a ninth diode, a tenth diode, a third control chip and a fourth control chip. The other end of the first switch set in the first switch circuit is also connected to one end of the second switch, the other end of the second switch is connected to the anode of the eighth diode, the cathode of the eighth diode is connected to the anode of the ninth diode, the cathode of the ninth diode is connected to the anode of the tenth diode, and the cathode of the tenth diode is connected to the negative electrode of the first power supply set in the first switch circuit. The third control chip and the fourth control chip are respectively arranged in parallel on one side of the second switch.

6. A multifunctional charging circuit according to claim 5, characterized in that: The eighth diode, the ninth diode and the tenth diode are all light emitting diodes.

7. A multifunctional charging circuit according to claim 5, characterized in that: One side of the fourth control chip is connected to a digital display board.

8. A multifunctional charging circuit according to claim 3, characterized in that: The first MOS tube is a field effect depletion type N-MOS tube.

9. The multifunctional charging circuit according to claim 1, characterized in that: The first transistor is a photosensitive transistor.

10. A multifunctional charging circuit according to claim 7, characterized in that: The digital display board is composed of a plurality of black display tubes, and the black display tubes form an "8"-shaped display unit. Thus, a digital display board may include one or more display units.

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