Charging and storage integrated cabinet for shutter type 3D glasses

Abstract

The utility model is applicable to the field of charging equipment, and provides a charging and storage integrated cabinet applied to shutter type 3D glasses, which comprises a cabinet body, the cabinet body comprises at least one layer of drawing type storage bin, and a plurality of charging seat modules used for plugging the shutter type 3D glasses are fixedly arranged in each layer of drawing type storage bin; each charging seat module comprises a cabinet charging circuit, the cabinet charging circuit is provided with a first magnetic connector, and the first magnetic connector is provided with a magnetic end used for being attracted with a second magnetic connector on the shutter type 3D glasses; the first magnetic connector is further provided with a first charging electrode led out from the cabinet body charging circuit, the second magnetic connector is provided with a second charging electrode led out from a glasses body charging circuit of the shutter type 3D glasses, and when the first magnetic connector and the second magnetic connector are attracted, the first charging electrode and the second charging electrode are electrically connected. The charging and storage integrated cabinet provided by the utility model can realize batch charging and storage of shutter type 3D glasses.

Description

Technical Field

[0001] The utility model belongs to the field of charging equipment, and in particular relates to a charging and storage integrated cabinet applied to shutter type 3D glasses. Background Art

[0002] Active shutter 3D glasses have been used in 3D movie screenings for many years. Most shutter 3D glasses are powered by button batteries, which need to be replaced when the batteries are low. However, the shutter 3D glasses used in theaters are numerous, and the daily replacement of batteries brings additional consumables and labor costs to the theaters. Theaters hope to use 3D glasses with rechargeable functions to replace the original 3D glasses powered by button batteries.

[0003] Some shutter-type 3D glasses for home use already have a charging function, usually equipped with a USB charging port, and are charged by plugging in. However, for cinema applications, plug-in rechargeable 3D glasses are very inconvenient, and frequent plugging and unplugging can cause damage to the plug. In addition, batch charging management and storage of shutter-type 3D glasses in cinemas also require a dedicated charging device, and there is currently no device on the market that integrates charging and storage functions. Utility Model Content

[0004] The technical problem to be solved by the utility model is how to realize batch charging and storage of shutter type 3D glasses.

[0005] In order to solve the above technical problems, the utility model is implemented as follows: a charging and storage integrated cabinet for shutter-type 3D glasses, comprising a cabinet body, wherein the cabinet body comprises at least one layer of pull-out storage bins, and each layer of the pull-out storage bins is fixedly provided with a plurality of charging seat modules for plugging in shutter-type 3D glasses;

[0006] Each of the charging seat modules includes a cabinet charging circuit, the cabinet charging circuit has a first magnetic connector, and the first magnetic connector has a magnetic end for engaging with a second magnetic connector on the shutter-type 3D glasses;

[0007] The first magnetic connector also has a first charging electrode derived from the cabinet charging circuit, and the second magnetic connector has a second charging electrode derived from the mirror body charging circuit of the shutter-type 3D glasses. When the first magnetic connector and the second magnetic connector are attracted to each other, the first charging electrode and the second charging electrode form an electrical connection, so that the cabinet charging circuit and the mirror body charging circuit are spliced ​​into a complete charging circuit.

[0008] Furthermore, the pull-out storage bin is slidably connected to the inner wall of the cabinet via a sliding guide rail.

[0009] Furthermore, the cabinet charging circuit also includes: a voltage regulating circuit, having a DC positive input terminal, a DC negative input terminal, a regulating terminal, a positive output terminal, and a negative output terminal, for adjusting the input DC voltage to the voltage required for charging; the positive output terminal and the negative output terminal constitute the first charging electrode; a main controller, having a control signal output terminal, the control signal output terminal is connected to the regulating terminal of the voltage regulating circuit, and is used to control the voltage regulating circuit to adjust the voltage.

[0010] Furthermore, the cabinet charging circuit also includes: a current detection circuit, connected to the voltage regulation circuit and the main controller, for detecting the current signal flowing through the first positive terminal and the first negative terminal and outputting the detection result to the main controller to control the charging parameters of the voltage regulation circuit.

[0011] Furthermore, the voltage regulation circuit includes: a MOS tube, whose source is connected to the DC positive input terminal and whose gate is connected to the control signal output terminal of the main controller to receive a PWM signal; an inductor L1, whose first end is connected to the drain of the MOS tube and whose second end serves as the positive output terminal; an energy storage capacitor C2, which is connected between the positive output terminal and the negative output terminal; and a diode D1, whose anode is connected to the DC negative input terminal and the negative output terminal and whose cathode is connected to the first end of the inductor L1.

[0012] Furthermore, the voltage regulating circuit further includes: a filter capacitor C1 connected between the DC positive input terminal and the DC negative input terminal.

[0013] Furthermore, the voltage regulation circuit is an integrated BUCK circuit chip or a supercapacitor dedicated charging chip; the main controller is an MCU with a PWM signal generation function; or, the main controller includes a triangular wave generating circuit and a comparator circuit: the triangular wave generating circuit is used to generate a triangular wave; the comparator circuit has one input end connected to the triangular wave generator to receive the triangular wave, and another input end connected to the current detection circuit to receive the current signal in the form of voltage, and the output end is used to output the PWM signal.

[0014] Furthermore, the current detection circuit includes: a sampling resistor R1 connected between the DC negative input terminal and the negative output terminal; a differential operational amplifier circuit, whose input terminal is connected to both ends of the sampling resistor R1 and whose output terminal is connected to the main controller through an analog-to-digital conversion circuit.

[0015] Furthermore, each of the charging seat modules is provided with an indicating device, which is electrically connected to the main controller and is used to indicate the charging status of the charging seat module under the control of the main controller.

[0016] Furthermore, the cabinet charging circuit also includes: a communication module, connected to the main controller, and used to upload the charging status of each charging seat module to the host computer or the background server.

[0017] Furthermore, a display device is provided on the panel of each layer of the pull-out storage bin, and the display device has display points corresponding one-to-one to multiple charging seat modules; the display device is connected to the host computer or the backend server, and is used to display the charging status of each charging seat module obtained from the host computer or the backend server.

[0018] The charging and storage integrated cabinet provided by the utility model can not only store shutter 3D glasses, but also automatically charge the shutter 3D glasses placed therein, and automatically enter the power maintenance state after being fully charged. The cinema staff can conveniently understand the power state of the shutter 3D glasses in the pull-out storage bins on each layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a structural diagram of the appearance of a charging and storage integrated cabinet for shutter-type 3D glasses provided by the utility model;

[0020] Figure 2 This is a schematic diagram of the arrangement of the charging seat modules in a pull-out storage bin provided by the utility model;

[0021] Figure 3 It is a schematic diagram of the charging stand module provided by the utility model and the shutter-type 3D glasses being attracted and separated through a magnetic attraction connector;

[0022] Figure 4 This is the appearance structure diagram of the charging seat module provided by the utility model;

[0023] Figure 5 It is a module diagram of the cabinet charging circuit in the charging seat module provided by the utility model;

[0024] Figure 6 It is a circuit diagram of a voltage regulating circuit provided by the utility model;

[0025] Figure 7 This is a module schematic diagram of the main controller provided by the utility model;

[0026] Figure 8 It is a schematic diagram of a triangle waveform, a reference voltage waveform, and a PWM waveform provided by the utility model;

[0027] Fig. 9 It is a circuit diagram of a current detection circuit provided by the utility model;

[0028] Fig. 10AIt is a curve diagram of voltage variation over time during constant current charging adopted in the initial stage of charging provided by the utility model;

[0029] Fig. 10B It is a curve diagram of the current changing with time during the constant voltage charging adopted at the end of charging provided by the utility model. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. 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.

[0031] Reference Figures 1 to 4 The charging storage integrated cabinet provided by the utility model can charge multiple shutter type 3D glasses, including a cabinet body 1, the cabinet body 1 includes at least one layer of pull-out storage bins 2, and each layer of pull-out storage bins 2 is fixedly provided with multiple charging seat modules 21, and the charging seat modules 21 are used to plug in the shutter type 3D glasses. The charging seat modules 21 can be specifically designed to be arranged in a matrix manner, or other regular arrangements, so as to facilitate taking and placing and preferably accommodate a large number of charging seat modules 21.

[0032] As a way to achieve this, Figure 2 As shown, the drawer-type storage bin 2 is also provided with a sliding guide rail 22, which can be slidably connected to the inner wall of the cabinet body 1, so that the drawer-type storage bin 2 can be easily drawn in and out of the counter 1. Figure 4 As shown, a screw hole 210 is provided at the bottom of the charging seat module 21, and the charging seat module 21 can be fixed in the pull-out storage bin 2 by fixing a screw in the screw hole 210. Of course, other fixing methods can also be used, such as directly using strong glue to stick the charging seat module 21 in the pull-out storage bin 2, and there is no specific limitation.

[0033] like Figure 3 , Figure 4 As shown, each charging seat module 21 includes a cabinet charging circuit 211, and the cabinet charging circuit 211 is connected to a first magnetic attraction connector A, and the first magnetic attraction connector A has magnetic ends a1 and a2, which are used to engage with the second magnetic attraction connector B on the shutter 3D glasses. In addition, the first magnetic attraction connector A also has a first charging electrode derived from the cabinet charging circuit 211, and the second magnetic attraction connector B has a second charging electrode derived from the lens charging circuit 3 of the shutter 3D glasses. When the first magnetic attraction connector A and the second magnetic attraction connector B are attracted, the first charging electrode and the second charging electrode are electrically connected, so that the cabinet charging circuit 211 and the lens charging circuit 3 are spliced ​​into a complete charging circuit, and the charging process can be started.

[0034] exist Figure 3 , Figure 4 In the embodiment, the first magnetic connector A has two magnetic ends a1 and a2. In the specific implementation, the number of magnetic ends can be flexibly designed as needed, as long as the first magnetic connector A and the second magnetic connector B can be firmly attracted together. The second magnetic connector B also has the same number of magnetic ends, which correspond to the magnetic ends on the first magnetic connector A. Of the first magnetic connector A and the second magnetic connector B, one is a magnetic part, and the other is an iron material that can be attracted by the magnetic part or a magnetic part with opposite magnetism.

[0035] like Figure 4 As shown, the first charging electrode includes a positive output terminal VoutP and a negative output terminal VoutN, the positive output terminal VoutP is used to connect to the positive electrode of the second charging electrode, and the negative output terminal VoutN is used to connect to the negative electrode of the second charging electrode.

[0036] Reference Figure 5 The cabinet charging circuit 211 also includes a main controller 51 and a voltage regulating circuit 52 .

[0037] The voltage regulating circuit 52 has a DC positive input terminal +, a DC negative input terminal -, a regulating terminal, a positive output terminal VoutP and a negative output terminal VoutN, and is used to adjust the input DC voltage to the voltage required for charging. As described above, the positive output terminal VoutP and the negative output terminal VoutN constitute the first charging electrode. The voltage regulating circuit 52 can be an integrated BUCK circuit chip, or a supercapacitor dedicated charging chip can be selected.

[0038] The main controller 51 has a control signal output terminal, which is connected to the regulating terminal of the voltage regulating circuit 52 and is used to control the voltage regulating circuit 52 to adjust the voltage.

[0039] The magnitude of the input DC voltage is generally inconsistent with the voltage required for charging the shutter-type 3D glasses, so the voltage regulator circuit 52 needs to perform voltage conversion (boost or buck) before charging.

[0040] Furthermore, the cabinet charging circuit 211 may also include: a current detection circuit 53, which is connected to the voltage regulation circuit 52 and the main controller 51, and is used to detect the current signal flowing through the positive output terminal VoutP and the negative output terminal VoutN and output the detection result to the main controller 51, so as to control the charging parameters of the voltage regulation circuit 52, which helps to achieve safe charging.

[0041] Furthermore, if Figure 4 and Figure 5As shown, each charging seat module 21 is provided with an indicator device 54, which is electrically connected to the main controller 51 and is used to indicate the charging status of the charging seat module 21 under the control of the main controller 51. The indicator device 54 can use a red, green and blue LED, and different colors can be used to represent different charging states.

[0042] Furthermore, the cabinet charging circuit 211 also includes a communication module 55 connected to the main controller 51, which is used to upload the charging status of each charging seat module 21 to the host computer or the background server.

[0043] As an example, the working principle of the cabinet charging circuit 211 is as follows: when the first magnetic connector A and the second magnetic connector B are attracted, the current flows through the current detection circuit 53, and the main controller 51 reads the current data of the current detection circuit 53, and makes a judgment based on the current value to ensure that the charging current does not exceed the preset safety value. At the same time, the main controller 51 issues corresponding instructions to the indication device 54 based on the charging current to indicate the real-time charging status. When necessary, the charging status can also be uploaded to the background server or host computer through the communication module 55.

[0044] like Figure 2 As shown, a display device 23 is provided on the panel of each layer of the pull-out storage bin 2, and the display device 23 has display points corresponding one-to-one to multiple charging seat modules 21. That is to say, the display device 23 is provided with display points equal to the number of charging seat modules 21 in each layer of the pull-out storage bin 2, and the arrangement order is the same as that of the charging seat modules 21.

[0045] The display device 23 is connected to the host computer or the backend server, and is used to display the charging status of each charging seat module 21 obtained from the host computer or the backend server, wherein each display point corresponds to displaying the charging status of a charging seat module 21 .

[0046] The display content of each display point is the same as the display content of the indicator device 54 on the charging seat module 21, so that the user can clearly know the power status of each shutter-type 3D glasses being charged inside the pull-out storage compartment 2 without opening the pull-out storage compartment 2.

[0047] Figure 6 An exemplary circuit structure of the voltage regulating circuit 52 is shown, including: MOS tube (MOSFET, metal-oxide semiconductor field effect transistor), inductor L1, energy storage capacitor C2, diode D1, these components constitute a DC-DC step-down circuit (Buck). The connection relationship is as follows:

[0048] A MOS tube, whose source is connected to the DC positive input terminal Vin, and whose gate is connected to the control signal output terminal of the main controller 51 to receive a PWM signal;

[0049] An inductor L1, a first end of which is connected to the drain of the MOS tube, and a second end of which serves as the positive output terminal VoutP;

[0050] The energy storage capacitor C2 is connected between the positive output terminal VoutP and the negative output terminal VoutN;

[0051] The diode D1 has an anode connected to the DC negative input terminal - and the negative output terminal VoutN, and a cathode connected to the first end of the inductor L1.

[0052] The gate of the MOS tube is controlled by the main controller 51 with PWM (Pulse Width Modulation) to adjust the output voltage. The DC voltage is input from the Vin terminal, and the other end is GND (common ground). The gate of the MOS tube is constantly turned on and off under the control of the PWM signal. When the MOS tube is turned on, the energy storage capacitor C2 is charged. When the MOS tube is turned off, the energy storage capacitor C2 charges the shutter 3D glasses through the positive output terminal VoutP and the negative output terminal VoutN of the first magnetic connector A. When the MOS tube is just turned off, since the current on the inductor L1 cannot change suddenly, it will continue to charge the energy storage capacitor C2 through the line where the diode D1 is located in a short time, thereby achieving voltage reduction. At this time, the charging circuit is the inductor L1, the energy storage capacitor C2, and the diode D1.

[0053] In practical applications, if the driving voltage requirement of the MOS tube gate is relatively high, a dedicated MOS tube gate driving circuit needs to be added to drive the gate of the MOS tube.

[0054] The voltage regulating circuit 52 may also be replaced by a dedicated DC-DC chip with a voltage adjustable port, and the main controller 51 controls the output voltage of the DC-DC chip by sending instructions to the voltage regulating port of the DC-DC chip.

[0055] Furthermore, the voltage regulating circuit 52 may also include a filter capacitor C1, which is connected between the DC positive input terminal + and the DC negative input terminal - to make the input DC voltage more stable.

[0056] As described above, the main controller 51 is used to output a PWM signal to the gate of the MOS tube, and adjust the voltage of the voltage regulating circuit 52 by changing the duty cycle of the PWM signal.

[0057] As an implementation, the main controller 51 may be an MCU having a PWM signal generation function. As another implementation, the main controller 51 may also be a combination of multiple devices, such as Figure 7As shown, it may specifically include a triangle wave generating circuit 511 and a comparator circuit 512 .

[0058] Among them, the triangular wave generating circuit 511 is used to generate a triangular wave; one input end of the comparator circuit 512 is connected to the triangular wave generator 511 to receive the triangular wave, and the other input end is connected to the current detection circuit 53 to receive the current signal in the form of voltage, and the output end is used to output the PWM signal to the gate of the MOS tube.

[0059] like Figure 8 As shown, the dotted line is the triangle wave generated by the triangle wave generating circuit 511, the dotted line is the reference voltage (the output voltage of the current detection circuit), and the thick black solid line is the PWM waveform output by the comparator circuit 512. When the charging current decreases, the reference voltage output by the current detection circuit decreases, the PWM duty cycle increases, the output voltage of the BUCK circuit increases, and the charging current increases. When the current increases, the reference voltage output by the current detection circuit increases, and the duty cycle of the PWM signal output by the comparator circuit decreases, causing the output voltage of the BUCK circuit to decrease and the charging current to decrease. In this way, the current will be balanced at a value, thereby achieving constant current charging.

[0060] Fig. 9 FIG. 5 shows an exemplary structure of a current detection circuit 53, including a sampling resistor R1 and a differential operational amplifier circuit, wherein the sampling resistor R1 and the differential operational amplifier circuit are connected to each other. Figure 6 The R1 in is the same resistor. The connection relationship is as follows:

[0061] The sampling resistor R1 is connected between the DC negative input terminal - and the negative output terminal VoutN, and is usually a high-power, high-precision resistor with a small resistance. When current flows through the sampling resistor R1, a voltage difference is generated at both ends of R1.

[0062] The differential operational amplifier circuit has an input end connected to both ends of the sampling resistor R1, and an output end OPA-OUT connected to the main controller 51 through an analog-to-digital conversion circuit. The use of the differential operational amplifier circuit can more accurately detect the current flowing through the sampling resistor R1.

[0063] like Fig. 9 As shown, the differential operational amplifier circuit includes an operational amplifier OPA, a resistor R2, a resistor R3, a resistor R4, and a resistor R5, wherein the first end of the resistor R2 is connected to the current input end of the sampling resistor R1, the second end of the resistor R2 is connected to the non-inverting input end of the operational amplifier OPA, and the second end of the resistor R2 is grounded through the resistor R3. The first end of the resistor R4 is connected to the current output end of the sampling resistor R1, the second end of the resistor R4 is connected to the inverting input end of the operational amplifier OPA, and the second end of the resistor R4 is connected to the output end OPA-OUT of the operational amplifier OPA through the resistor R5.

[0064] The voltage signal amplified by the differential operational amplifier circuit is output from the output terminal OPA-OUT. The amplified voltage signal is an analog signal and needs to be converted into a digital signal. Usually, the main controller 51 is an MCU integrated with an analog-to-digital conversion circuit, which can reduce the use of discrete operational amplifier components and help reduce the cost of the entire circuit. If the main controller 51 used does not have an integrated analog-to-digital conversion circuit, it is necessary to set a separate analog-to-digital conversion circuit in the current detection circuit 53.

[0065] The voltage signal outputted by the output terminal OPA-OUT is converted into a digital signal by the analog-to-digital conversion circuit and then provided to the main controller 51. The main controller 51 controls the voltage regulating circuit 52 and the indicating device 54 according to the preset control logic. When the converted current is greater than the preset safety value, the main controller 51 sends an instruction to the voltage regulating circuit 52 to reduce its output voltage, thereby reducing the charging current.

[0066] In specific implementation, some control logic can be designed in the cabinet charging circuit 211 according to the implementation requirements to realize the corresponding control function and indication function. An example is given below:

[0067] In actual operation, after the power of the charging seat module 21 is turned on, the main controller 51 sends a command to the voltage regulating circuit 52 to output the first set voltage. At the same time, the main controller 51 starts to receive the current value on the sampling resistor R1 after passing through the differential operational amplifier circuit and the analog-to-digital conversion circuit.

[0068] When the shutter 3D glasses are not placed on the charging seat module 21, the current flowing through the sampling resistor R1 can be regarded as zero, and the current at this time is called the first current range. The main controller 51 outputs instructions to the indicator device 54 based on the current data at this time, and displays the first indication state, that is, the state without glasses. Since the positive and negative output ends of the first magnetic suction connector A of the charging seat module 21 have voltage outputs, when the shutter 3D glasses are placed on the charging seat module 21 and connected by suction, the current flowing through the positive and negative output ends of the first magnetic suction connector will be significantly greater than the current in the state without glasses. If the battery on the shutter 3D glasses is not fully charged at this time, it enters the charging state, and the charging current is within a certain range, which is called the second current range. The main controller 51 issues instructions to the indicator device 54 based on the current range of the charging state, and displays the second indication state, that is, the charging state. When the battery on the shutter 3D glasses is close to being fully charged, the current will be greatly reduced. When the current is lower than a certain value, it can be regarded as fully charged, and the current range at this time can be called the third current range. At this time, the main controller 51 issues an instruction to the indicator device 54 according to the third current range to display the third indicator state, that is, the fully charged state. The current ranges of the three stages decrease in the following order: the second current range (charging state), the third current state (fully charged state), and the first current state (no shutter 3D glasses state).

[0069] In order to shorten the charging time, the main controller 51 can be used to adjust the output voltage of the voltage regulating circuit 52 to set different charging stages, such as Fig. 10A and 10B As shown, at the beginning of the charging stage, constant current charging is performed with a relatively large current within the safe current range, and at the end of the charging process, constant voltage charging is performed, and the charging current is gradually reduced until the energy storage element is fully charged. In the above charging stages, the main controller 51 is required to control and adjust the output voltage of the voltage regulation circuit 52 accordingly.

[0070] When a short circuit occurs in the shutter-type 3D glasses, or the positive and negative output terminals of the first magnetic connector A of the charging stand module 21 are short-circuited, the current flowing through the sampling resistor R1 will be greater than the second current range (charging current). At this time, the main controller 51 immediately sends an instruction to the voltage regulation circuit 52 to adjust its output voltage to zero volts to protect the back-end circuit from overheating and burning, and sends an instruction to the indication device 54 to display the fourth indication state, that is, the overcurrent protection state, to facilitate the operator to identify and handle the fault.

[0071] The main controller 51 determines the current stage according to the current state, and can upload the data to the background server or the host computer through the communication module 55 for background monitoring. In addition, the display device 23 arranged on the front panel of each layer of the pull-out storage bin 2 synchronously displays the status of each charging seat module 21 according to the predetermined 4 indication states according to the charging status data of the pull-out storage bin on this layer obtained by the host computer, and the state of each position indication point is the same as the indication state on the corresponding charging seat module 21.

[0072] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A charging and storage integrated cabinet for shutter-type 3D glasses, characterized in that: The cabinet comprises a cabinet body, wherein the cabinet body comprises at least one layer of pull-out storage bins, and each layer of the pull-out storage bins is fixedly provided with a plurality of charging seat modules for plugging in shutter-type 3D glasses; Each of the charging seat modules includes a cabinet charging circuit, the cabinet charging circuit has a first magnetic connector, and the first magnetic connector has a magnetic end for engaging with a second magnetic connector on the shutter-type 3D glasses; The first magnetic connector also has a first charging electrode derived from the cabinet charging circuit, and the second magnetic connector has a second charging electrode derived from the mirror body charging circuit of the shutter-type 3D glasses. When the first magnetic connector and the second magnetic connector are attracted to each other, the first charging electrode and the second charging electrode form an electrical connection, so that the cabinet charging circuit and the mirror body charging circuit are spliced ​​into a complete charging circuit.

2. The charging and storage integrated cabinet according to claim 1, characterized in that: The drawer-type storage bin is slidably connected to the inner side wall of the cabinet via a sliding guide rail.

3. The charging and storage integrated cabinet according to claim 1, characterized in that: The cabinet charging circuit also includes: A voltage regulating circuit, comprising a DC positive input terminal, a DC negative input terminal, a regulating terminal, a positive output terminal, and a negative output terminal, for adjusting the input DC voltage to a voltage required for charging; the positive output terminal and the negative output terminal constitute the first charging electrode; The main controller has a control signal output terminal, which is connected to the regulating terminal of the voltage regulating circuit and is used to control the voltage regulating circuit to adjust the voltage.

4. The charging and storage integrated cabinet according to claim 3, characterized in that: The cabinet charging circuit also includes: The current detection circuit is connected to the voltage regulation circuit and the main controller, and is used to detect the current signal flowing through the positive output terminal and the negative output terminal and output the detection result to the main controller to control the charging parameters of the voltage regulation circuit.

5. The charging and storage integrated cabinet according to claim 4, characterized in that: The voltage regulating circuit comprises: A MOS tube, whose source is connected to the DC positive input terminal and whose gate is connected to the control signal output terminal of the main controller to receive a PWM signal; An inductor L1, a first end of which is connected to the drain of the MOS tube, and a second end of which serves as the positive output end; An energy storage capacitor C2 is connected between the positive output terminal and the negative output terminal; The diode D1 has an anode connected to the DC negative input terminal and the negative output terminal, and a cathode connected to the first end of the inductor L1.

6. The charging and storage integrated cabinet according to claim 5, characterized in that: The voltage regulating circuit further includes: The filter capacitor C1 is connected between the DC positive input terminal and the DC negative input terminal.

7. The charging and storage integrated cabinet according to claim 5 or 6, characterized in that: The voltage regulating circuit is an integrated BUCK circuit chip or a supercapacitor dedicated charging chip; The main controller is an MCU with a PWM signal generation function; or, the main controller includes a triangle wave generating circuit and a comparator circuit: The triangle wave generating circuit is used to generate a triangle wave; The comparator circuit has one input end connected to the triangle wave generator to receive the triangle wave, another input end connected to the current detection circuit to receive the current signal in the form of voltage, and an output end for outputting the PWM signal.

8. The charging and storage integrated cabinet according to claim 4, characterized in that: The current detection circuit comprises: A sampling resistor R1 is connected between the DC negative input terminal and the negative output terminal; The differential operational amplifier circuit has an input end connected to both ends of the sampling resistor R1 and an output end connected to the main controller via an analog-to-digital conversion circuit.

9. The charging and storage integrated cabinet according to claim 3, characterized in that: Each of the charging seat modules is provided with an indicating device, which is electrically connected to the main controller and is used to indicate the charging status of the charging seat module under the control of the main controller.

10. The charging and storage integrated cabinet according to claim 3, characterized in that: The cabinet charging circuit also includes: a communication module, connected to the main controller, for uploading the charging status of each charging seat module to the host computer or the backend server; A display device is provided on the panel of each layer of the pull-out storage bin, and the display device has display points corresponding to multiple charging seat modules one by one; the display device is connected to the host computer or the backend server, and is used to display the charging status of each charging seat module obtained from the host computer or the backend server.

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