Charging interface device and electronic equipment adopting same

Abstract

The utility model discloses a charging interface device and an electronic device using the same, the charging interface device comprises a circuit board installed on the electronic device, the circuit board is provided with a main control module, a charging management module and a power supply module, the charging management module and the main control module are electrically connected with the power supply module, and the main control module is electrically connected with the power supply module. The charging management module is electrically connected with a charging interface module, and the charging interface module comprises a first interface and a second interface which are arranged in parallel. According to the charging interface device, the two charging interfaces are arranged on the charging interface device, so that the charging modes of the electronic equipment are enriched, different charging requirements of users are met, and the situation that the electronic equipment cannot be charged again when a single charging interface is damaged is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic equipment, in particular to a charging interface device and electronic equipment using the charging interface device. Background Art

[0002] With the rapid development of economy and technology, various beauty devices have appeared on the market, and beauty devices have become an indispensable outing for beauty lovers. There are generally three ways to charge beauty devices. The first is to use Type-C, cylindrical charging ports or other charging ports to charge the device. The second is to use a power adapter with a wire to connect to the device for charging. The third is to charge with a charging base, usually using spring pins or wireless charging to charge the device.

[0003] Existing beauty devices usually use one of the above charging methods to achieve the charging function, but the disadvantages are: if an independent charging cable is used for charging, especially some beauty products use cylindrical charging ports for waterproofing, the loss of the charging cable means the product is scrapped; if the adapter power cord is used for charging, it is necessary to consider the fact that the adapter power plugs in different countries and regions are not uniform, and the adapter power plugs cannot adapt to the needs of different socket interfaces; using a charging stand to charge the beauty device is a good choice, which can charge the product while storing and placing the product, but there is no charging port on the beauty device body. If the charging stand is lost or damaged, the beauty device cannot be charged and used. In addition, when going out, the beauty device body and the charging stand need to be carried at the same time, which is very inconvenient for the user to carry. Therefore, the existing charging methods of beauty devices are relatively single and cannot adapt to the different charging needs of users.

[0004] Therefore the prior art still needs to be improved and enhanced. Utility Model Content

[0005] In view of the above-mentioned deficiencies in the prior art, the purpose of the present invention is to provide a charging interface device and an electronic device using the charging interface device, aiming to solve the problem that the existing electronic devices have a single charging method and cannot meet user needs.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A charging interface device comprises a circuit board installed on an electronic device, wherein a main control module, a charging management module and a power supply module are arranged on the circuit board, wherein the charging management module and the main control module are electrically connected to the power supply module, wherein the charging management module is electrically connected to a charging interface module, and the charging interface module comprises a first interface and a second interface arranged in parallel.

[0008] The charging management module includes a charging management chip, a first resistor, a second resistor, a third resistor, a first capacitor, a second capacitor, a third capacitor, a first diode, a second diode, a first MOS tube, and a second MOS tube. The CHRG pin of the charging management chip is electrically connected to the positive electrode of the battery through the first resistor; the GND pin of the charging management chip is grounded; the BAT pin of the charging management chip is connected to the positive electrode of the battery, the power supply module, one end of the second capacitor and one end of the third capacitor, and the other end of the second capacitor and the other end of the third capacitor are grounded; the VCC pin of the charging management chip is connected to the cathode of the first diode and the cathode of the second diode, and is also grounded through the second resistor and the third resistor in turn, and is also grounded through the first capacitor; the I The SET pin is grounded through a fourth resistor; the anode of the first diode, the drain of the first MOS tube, and the gate of the second MOS tube are grounded, the anode of the second diode, the drain of the second MOS tube, and the gate of the first MOS tube are connected to the anode of the first interface and the VBUS pin of the second interface, and the source of the first MOS tube and the source of the second MOS tube are grounded; the CC1 pin of the second interface is grounded through a ninth resistor, the CC2 pin of the second interface is grounded through a tenth resistor, and the negative electrode of the first interface is grounded.

[0009] The power supply module includes an inductor, a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor, a third MOS tube, a third diode, a fourth capacitor and a fifth capacitor. The gate of the third MOS tube is grounded through the sixth resistor and is also connected to the main control module through the fifth resistor. The source of the third MOS tube is grounded. The drain of the third MOS tube is connected to the positive electrode of the third diode and is also connected to the BAT pin of the charging management chip and the positive electrode of the battery through the inductor. The cathode of the third diode is the voltage output end of the power supply module, which is connected to one end of the eighth resistor and is also grounded through the fourth capacitor. The other end of the eighth resistor is connected to the main control module, is also grounded through the seventh resistor, and is also grounded through the fifth capacitor.

[0010] The main control module includes a main control chip, a sixth capacitor and a seventh capacitor. The first pin of the main control chip is connected to one end of the fifth resistor, the third pin of the main control chip is connected to the other end of the eighth resistor, and the sixth pin of the main control chip is electrically connected to the positive electrode of the battery, and is also grounded through the sixth capacitor and the seventh capacitor.

[0011] The electronic device comprises a body and a charging interface device arranged on the body.

[0012] The body includes a bottom cover located at the lower end of the body, and the bottom cover is provided with a first opening adapted to the first interface and a second opening adapted to the second interface.

[0013] A guide column is arranged on the bottom cover, and the guide column is arranged coaxially with the first opening; a step portion is arranged on the inner wall of the second opening, and the end surface of the step portion is flush with the end surface of the second interface.

[0014] The body also includes a shell detachably connected to the bottom cover, the shell includes a front shell and a rear shell arranged opposite to the front shell and detachably connected, and one of the front shell and the rear shell is provided with a fixing piece for mounting the circuit board.

[0015] One inner wall of the front shell and the rear shell extends toward one side of the circuit board to form the fixing member. Two fixing members are provided and the two fixing members are arranged opposite to each other to form a mounting groove for mounting the circuit board.

[0016] The other of the front shell and the rear shell is provided with a positioning member, and the positioning member is arranged on the opposite side of the fixing member to fix the circuit board.

[0017] Compared with the prior art, the utility model provides a charging interface device and an electronic device using the charging interface device, wherein the charging interface device and the electronic device using the charging interface device, wherein the charging interface device comprises a circuit board mounted on the electronic device, wherein the circuit board is provided with a main control module, a charging management module and a power supply module, wherein the charging management module and the main control module are electrically connected to the power supply module, wherein the charging management module is electrically connected to a charging interface module, and wherein the charging interface module comprises a first interface and a second interface arranged in parallel. In the present application, two charging interfaces are provided on the charging interface device, thereby enriching the charging methods of the electronic device to meet the different charging needs of the user, and avoiding the situation where a single charging interface is damaged and the electronic device cannot be charged and used again. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a structural schematic diagram of the beauty instrument provided by the utility model.

[0019] Figure 2 for Figure 1 Enlarged view of part A in the middle.

[0020] Figure 3 This is a cross-sectional view of the beauty instrument provided by the utility model.

[0021] Figure 4 for Figure 4 Enlarged view of part B in the middle.

[0022] Figure 5 This is a circuit schematic diagram for charging the beauty instrument provided by the utility model.

[0023] Figure 6 This is a schematic structural diagram of the front shell and the rear shell provided by the utility model.

[0024] Figure 7 for Figure 6 Enlarged view of part C in the middle.

[0025] Figure 8 This is a structural schematic diagram of the beauty instrument charging stand provided by the utility model.

[0026] Reference Numbers

[0027] Body 1, bottom cover 11, first opening 111, second opening 112, guide column 113, step 114, shell 12, front shell 121, rear shell 122, fixing member 13, mounting groove 131, positioning member 14, positioning notch 141, circuit board 2, main control module 21, charging management module 22, power supply module 23, charging interface module 24, first interface J1, second interface J2, charging management chip U1, first resistor R1, second resistor R2, third resistor R3, fourth resistor R4, first capacitor C1, second capacitor C2, third capacitor C3, first diode D1, second diode D2, first MOS tube Q1, second MOS tube Q2, third interface J3, inductor L, fifth resistor R5, sixth resistor R6, seventh resistor R7, eighth resistor R8, third MOS tube Q3, third diode D3, fourth capacitor C4, fifth capacitor C5, main control chip U2, sixth capacitor C6, seventh capacitor C7, charging seat 3, charging column 31, annular support portion 32. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and effect of the utility model clearer and more specific, the utility model is further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0029] It should be noted that when a component is referred to as being "mounted on", "fixed on" or "disposed on" another component, it may be directly on the other component or there may be a central component at the same time. When a component is referred to as being "connected to" another component, it may be directly connected to the other component or there may be a central component at the same time.

[0030] It should also be noted that the directional terms such as left, right, up, and down in the embodiments of the present invention are merely relative concepts or are based on the normal use status of the product and should not be considered as restrictive.

[0031] With the rapid development of economy and technology, various beauty devices have appeared on the market, and beauty devices have become an indispensable outing for beauty lovers. There are generally three ways to charge beauty devices. The first is to use Type-C, cylindrical charging ports or other charging ports to charge the device. The second is to use a power adapter with a wire to connect to the device for charging. The third is to charge with a charging base, usually using spring pins or wireless charging to charge the device.

[0032] Existing beauty instruments usually use one of the above charging methods to achieve the charging function, but the disadvantages are: if an independent charging cable is used for charging, especially some beauty products use cylindrical charging ports for waterproofing, the loss of the charging cable means that the product is scrapped; if an adapter power cord is used for charging, it is necessary to consider the fact that the adapter power plugs in different countries and regions are not uniform, and the adapter power plugs cannot adapt to the needs of different environments; in addition, frequent use or improper use of independent charging cables and adapter power cords may cause cable wear and affect the charging effect, and the interface of the beauty instrument may be damaged due to excessive plugging and unplugging or improper use, which will cause the beauty instrument to be unable to be charged and used again; the beauty instrument is a high-frequency household product that needs to be used together with liquid cosmetics frequently. In many cases, the beauty instrument needs to be washed and cleaned after use, and many products will come with a base; using a charging stand to charge the beauty instrument is a good choice, which can charge the product while storing and placing the product, but the beauty instrument body is not provided with a charging port. If the charging stand is lost or damaged, the beauty instrument cannot be charged and used. In addition, when going out, the beauty instrument body and the charging stand need to be carried at the same time, which is very inconvenient for the user to carry. Therefore, the existing charging method of beauty instruments is relatively single and cannot adapt to the different charging needs of users.

[0033] In order to solve the above problems, this application provides a charging interface device, please refer to Figure 1-Figure 5 , including a circuit board 2 installed on the electronic device, on which a main control module 21, a charging management module 22 and a power supply module 23 are arranged, the charging management module 22 and the main control module 21 are electrically connected to the power supply module 23, the charging management module 22 is electrically connected to a charging interface module 24, and the charging interface module 24 includes a first interface J1 and a second interface J2 arranged in parallel.

[0034] In this application, two charging interfaces are provided on the charging interface device to enrich the charging methods of electronic devices, so as to adapt to the charging needs of users in different environments, and avoid the situation where a single charging interface damages the electronic device and cannot be charged and used again. In the embodiment of this application, the first interface J1 is charged by a thimble interface, and the second interface J2 is charged by a Type-C interface. Of course, the second interface J2 can also be charged by a micro USB interface, etc. This application does not limit the second interface J2. It should be noted that the electronic device can be an electric toothbrush, a beauty instrument, a shaver and other products. This application takes a beauty instrument as an example for explanation.

[0035] For further information, see Figure 5 The charging management module 22 includes a charging management chip U1, a first resistor R1, a second resistor R2, a third resistor R3, a first capacitor C1, a second capacitor C2, a third capacitor C3, a first diode D1, a second diode D2, a first MOS tube Q1, and a second MOS tube Q2. The CHRG pin of the charging management chip U1 is electrically connected to the positive electrode of the battery through the first resistor R1; the GND pin of the charging management chip U1 is grounded; the BAT pin of the charging management chip U1 is connected to the positive electrode of the battery, the power supply module 23, one end of the second capacitor C2, and one end of the third capacitor C3, and the other end of the second capacitor C2 and the other end of the third capacitor C3 are grounded; the VCC pin of the charging management chip U1 is connected to the negative electrode of the first diode D1 and the negative electrode of the second second diode D2. The cathode of the first MOS tube D2 is also grounded through the second resistor R2 and the third resistor R3 in sequence, and is also grounded through the first capacitor C1; the ISET pin of the charging management chip U1 is grounded through the fourth resistor R4; the anode of the first diode D1, the drain of the first MOS tube Q1, and the gate of the second MOS tube Q2 are grounded, the anode of the second diode D2, the drain of the second MOS tube Q2, and the gate of the first MOS tube Q1 are connected to the anode of the first interface J1 and the VBUS pin of the second interface J2, the source of the first MOS tube Q1 and the source of the second MOS tube Q2 are grounded; the CC1 pin of the second interface J2 is grounded through the ninth resistor R9, the CC2 pin of the second interface J2 is grounded through the tenth resistor R10, and the cathode of the first interface J1 is grounded.

[0036] In the present application, the third interface J3 is a battery interface, which is used to connect the battery. The charging management chip U1 can use a chip of model FM4057S or other chips that can achieve the same function. The first MOS tube Q1 and the second MOS tube Q2 are N-channel enhancement field effect transistors, and the models of the first MOS tube Q1 and the second MOS tube Q2 are AO3416. When the gates of the first MOS tube Q1 and the second MOS tube Q2 are at a high level, the source and the drain of the MOS tube are connected, and the first MOS tube Q1 and the second MOS tube Q2 both play the role of switches, which together with the first diode D1 and the second diode D2 form an input reverse connection protection circuit, which plays a protective role in the charging circuit. When the first interface J1 or the second interface J2 is connected to an external power source (such as a charger with a charging cable, a charging stand, etc.), the voltage input from the first interface J1 or the second interface J2 is transmitted to the VCC pin of the charging management chip U1 through the first diode D1 and the second MOS tube Q2, or through the second diode D2 and the first MOS tube Q1 to form a loop. After the VCC pin of the charging management chip U1 is powered on, the BAT pin of the charging management chip U1 outputs a charging voltage and a charging current to charge the battery, and the I SET pin of the charging management chip U1 obtains the voltage of the fourth resistor R4 to set the charging current output by the CHRG pin. For details, please refer to the specification of the FM4057S charging management chip.

[0037] Further, the power supply module 23 includes an inductor L, a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, an eighth resistor R8, a third MOS tube Q3, a third diode D3, a fourth capacitor C4 and a fifth capacitor C5, the gate of the third MOS tube Q3 is grounded through the sixth resistor R6, and is also connected to the main control module 21 through the fifth resistor R5, the source of the third MOS tube Q3 is grounded, the drain of the third MOS tube Q3 is connected to the positive electrode of the third diode D3, and is also connected to the BAT pin of the charging management chip U1 and the positive electrode of the battery through the inductor L, the cathode of the third diode D3 is the voltage output end of the power supply module 23, which is connected to one end of the eighth resistor R8 and is also grounded through the fourth capacitor C4, the other end of the eighth resistor R8 is connected to the main control module 21, is also grounded through the seventh resistor R7, and is also grounded through the fifth capacitor C5. The third MOS tube Q3 is an N-channel field effect tube, and the model of the third MOS tube Q3 is 2N7002. The main control module 21 detects the voltage of the voltage output terminal VCC of the power supply module 23 through the power supply module 23. When the VCC voltage is lower than the set value (such as 3.3V), the main control module 21 outputs a PWM signal of a corresponding duty cycle, and the power supply module 23 outputs a corresponding voltage to stabilize the power supply voltage. The main control module 21 includes a main control chip U2, a sixth capacitor C6 and a seventh capacitor C7. The first foot of the main control chip U2 is connected to one end of the fifth resistor R5, and the third foot of the main control chip U2 is connected to the other end of the eighth resistor R8. The sixth foot of the main control chip U2 is electrically connected to the positive electrode of the battery, and is also grounded through the sixth capacitor C6 and the seventh capacitor C7. The voltage output by the battery is filtered by the sixth capacitor C6 and the seventh capacitor C7 to supply power to the main control chip U2, and the 15th foot of the main control chip U2 is grounded. The model of the main control chip U2 is PFS123 or a chip that can achieve the same function. The third pin of the main control chip U2 outputs a high level to turn on the third MOS tube Q3, and the seventh resistor R7 and the eighth resistor R8 constitute a voltage sampling circuit to obtain the VCC voltage, and feed back to the first pin of the main control chip U2. The main control chip U2 determines whether the VCC voltage is lower than the set value (such as 3.3V). When it is lower than the set value, the duty cycle of the PWM signal is increased, the conduction time of the third MOS tube Q3 becomes longer, and the VCC voltage is increased.

[0038] For further information, see Figure 1-Figure 4 as well as Figure 6-Figure 8The beauty instrument comprises a body 1 and a charging interface device arranged on the body 1. The body 1 comprises a bottom cover 11 located at the lower end of the body 1, and the bottom cover 11 is provided with a first opening 111 adapted to the first interface J1 and a second opening 112 adapted to the second interface J2. In the present application, the beauty instrument can be charged through both the first interface J1 and the second interface J2, which improves the problem in the prior art that a single interface is damaged, resulting in the inability to charge the beauty instrument, and the single charging method cannot meet the charging needs of users.

[0039] Furthermore, a guide post 113 is provided on the bottom cover 11, and the guide post 113 is coaxially arranged with the first opening 111. In the embodiment of the present application, the first interface J1 includes two charging pins, and the guide post 113 is a hollow structure. One end of the charging pin is connected to the circuit board 2, and the other end of the charging pin passes through the middle of the guide post 113 and extends into the first opening 111; the present application also provides a charging base 3 for placing a beauty instrument, and the middle part of the charging base 3 is recessed inwardly with a receiving cavity (not marked in the figure), and the charging base 3 is provided with a charging column 31 corresponding to the two charging pins, and the charging base 3 is also provided with an annular support portion 32 to support the beauty instrument from the side when the beauty instrument is placed on the charging base 3 to ensure the stability of the placement of the beauty instrument; the charging base 3 extends upward to form an arc-shaped portion (not marked in the figure), and the lower end of the annular support portion 32 is fixed to the charging base 3. The beauty instrument is placed on the charging base 3, and the annular support portion 32 is sleeved on the outer periphery of the arc-shaped portion. The lower end of the beauty instrument passes through the middle of the annular support portion 32, and can be placed in the accommodating cavity under the action of the beauty instrument's own gravity, so that the charging pin contacts the conductive column 31, thereby completing the cooperation between the beauty instrument and the charging base 3; preferably, the charging pin and the charging column 31 can be connected by magnetic adsorption. The user only needs to move the charging pin of the beauty instrument close to the charging column 31 on the charging base 3, and the two can be adsorbed together without precise alignment, eliminating the plugging and unplugging steps, and making it convenient for users to charge; in addition, the charging method of the pin interface does not require frequent plugging and unplugging, reduces the physical wear of the charging interface, and thereby increases the service life of the charging interface.

[0040] Furthermore, a stepped portion 114 is provided on the inner wall of the second opening 112, and the end surface of the stepped portion 114 is flush with the end surface of the second interface J2. In the embodiment of the present application, the second interface J2 is a Type-C charging interface, one end of the second interface J2 is connected to the circuit board 2, and the other end of the second circuit board 2 is in contact with the end surface of the stepped portion 114. The end of the second interface J2 is limited by the bottom cover 11 to avoid affecting the stability of the second interface J2 when the external charging connector is inserted or removed.

[0041] Furthermore, the body 1 further includes a shell 12 detachably connected to the bottom cover 11, the shell 12 includes a front shell 121, and a rear shell 122 disposed opposite to and detachably connected to the front shell 121, and one of the front shell 121 and the rear shell 122 is provided with a fixing member 13 for mounting the circuit board 2. In the present application, the arrangement direction of the circuit board 2 is perpendicular to the direction of the body 1, and when the bottom cover 11 and the shell 12 are assembled, the circuit board 2 is first mounted on the fixing member 13, and then the front shell 121 and the rear shell 122 are assembled, so as to fix the circuit board 2 from both sides to ensure the stability of the installation of the circuit board 2.

[0042] Furthermore, one inner wall of the front shell 121 and the rear shell 122 extends toward one side of the circuit board 2 to form the fixing member 13, and two fixing members 13 are provided, and the two fixing members 13 are arranged opposite to each other to form a mounting groove 131 for mounting the circuit board 2. The other one of the front shell 121 and the rear shell 122 is provided with a positioning member 14, and the positioning member 14 is arranged on the opposite side of the fixing member 13 to fix the circuit board 2. In the embodiment of the present application, the inner wall of the front shell 121 extends inward along a direction perpendicular to the body 1 to form two sheet-like fixing members 13, and the two sheet-like fixing members 13 cooperate with the front shell 121 to form a mounting groove 131. The spacing between the two sheet-like fixing members 13 is equal to or slightly smaller than the circuit board 2, so that one side of the circuit board 2 can be stably inserted into the mounting groove 131; the inner wall of the rear shell 122 extends inward along the direction of the body 1 to form two sheet-like positioning members 14, and the positioning members 14 are provided with positioning notches 141 adapted to the circuit board 2. The positioning notches 141 are arranged opposite to the mounting groove 131, and the stability of the installation of the circuit board 2 is ensured by the cooperation between the positioning notches 141 and the mounting groove 131; the opening of the positioning notch 141 is provided with a chamfer, which greatly improves the installation efficiency of the positioning member 14 and the circuit board 2.

[0043] In summary, the utility model provides a charging interface device and an electronic device using the charging interface device, wherein the charging interface device includes a circuit board installed on the electronic device, the circuit board is provided with a main control module, a charging management module and a power supply module, the charging management module and the main control module are electrically connected to the power supply module, the charging management module is electrically connected to a charging interface module, and the charging interface module includes a first interface and a second interface arranged in parallel. In this application, by providing two charging interfaces on the charging interface device, the charging method of the electronic device is enriched to meet the different charging needs of users, and the situation that a single charging interface is damaged and the electronic device cannot be charged and used again is avoided.

[0044] It is understandable that those skilled in the art can make equivalent substitutions or changes based on the technical solution and utility model concept of the utility model, and all these changes or substitutions should fall within the protection scope of the claims attached to the utility model.

Claims

1. A charging interface device, comprising a circuit board mounted on an electronic device, characterized in that: The circuit board is provided with a main control module, a charging management module and a power supply module, the charging management module and the main control module are electrically connected to the power supply module, the charging management module is electrically connected to a charging interface module, and the charging interface module includes a first interface and a second interface arranged in parallel; The charging management module includes a charging management chip, a first resistor, a second resistor, a third resistor, a first capacitor, a second capacitor, a third capacitor, a first diode, a second diode, a first MOS tube and a second MOS tube. The CHRG pin of the charging management chip is electrically connected to the positive electrode of the battery through the first resistor; the GND pin of the charging management chip is grounded; the BAT pin of the charging management chip is connected to the positive electrode of the battery, the power supply module, one end of the second capacitor and one end of the third capacitor, and the other end of the second capacitor and the other end of the third capacitor are grounded; the VCC pin of the charging management chip is connected to the negative electrode of the first diode and the negative electrode of the second diode, and is also grounded through the second resistor and the third resistor in turn, and is also grounded through the first capacitor; the ISET pin of the charging management chip is grounded through the fourth resistor; the positive electrode of the first diode, the drain of the first MOS tube, and the gate of the second MOS tube are grounded, the positive electrode of the second diode, the drain of the second MOS tube, and the gate of the first MOS tube are connected to the positive electrode of the first interface and the VBUS pin of the second interface, and the source of the first MOS tube and the source of the second MOS tube are grounded; The CC1 pin of the second interface is grounded through a ninth resistor, the CC2 pin of the second interface is grounded through a tenth resistor, and the negative electrode of the first interface is grounded.

2. The charging interface device according to claim 1, characterized in that: The power supply module includes an inductor, a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor, a third MOS tube, a third diode, a fourth capacitor and a fifth capacitor. The gate of the third MOS tube is grounded through the sixth resistor and is also connected to the main control module through the fifth resistor. The source of the third MOS tube is grounded. The drain of the third MOS tube is connected to the positive electrode of the third diode and is also connected to the BAT pin of the charging management chip and the positive electrode of the battery through the inductor. The cathode of the third diode is the voltage output end of the power supply module, which is connected to one end of the eighth resistor and is also grounded through the fourth capacitor. The other end of the eighth resistor is connected to the main control module, is also grounded through the seventh resistor, and is also grounded through the fifth capacitor.

3. The charging interface device according to claim 2, characterized in that: The main control module includes a main control chip, a sixth capacitor and a seventh capacitor. The first pin of the main control chip is connected to one end of the fifth resistor, the third pin of the main control chip is connected to the other end of the eighth resistor, and the sixth pin of the main control chip is electrically connected to the positive electrode of the battery, and is also grounded through the sixth capacitor and the seventh capacitor.

4. An electronic device, characterized in that It comprises a body and a charging interface device as claimed in any one of claims 1 to 3 arranged on the body.

5. The electronic device according to claim 4, characterized in that: The body includes a bottom cover located at the lower end of the body, and the bottom cover is provided with a first opening adapted to the first interface and a second opening adapted to the second interface.

6. The electronic device according to claim 5, characterized in that: A guide column is arranged on the bottom cover, and the guide column is arranged coaxially with the first opening; a step portion is arranged on the inner wall of the second opening, and the end surface of the step portion is flush with the end surface of the second interface.

7. The electronic device according to claim 5, characterized in that: The body also includes a shell detachably connected to the bottom cover, the shell includes a front shell and a rear shell arranged opposite to the front shell and detachably connected, and one of the front shell and the rear shell is provided with a fixing piece for mounting the circuit board.

8. The electronic device according to claim 7, characterized in that: One inner wall of the front shell and the rear shell extends toward one side of the circuit board to form the fixing member. Two fixing members are provided and the two fixing members are arranged opposite to each other to form a mounting groove for mounting the circuit board.

9. The electronic device according to claim 8, characterized in that: The other of the front shell and the rear shell is provided with a positioning member, and the positioning member is arranged on the opposite side of the fixing member to fix the circuit board.

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