Charging device and interactive terminal

Abstract

The utility model provides a charging device and an interactive terminal, and relates to the technical field of charging. The charging device comprises a charging module, a charging interface, an authentication module and a voltage output module, the charging interface is used for being connected with a preset power supply, the input end of the charging module is connected with the charging interface, the output end of the charging module is used for being connected with a power supply contact of a contact unit in the interactive terminal, and a communication contact and the power supply contact in the contact unit are used for being connected with a communication contact and a power supply contact of a mobile terminal respectively; a communication contact in the contact unit is connected with a data input end of the authentication module, a first control output end of the authentication module is connected with a control end of the charging module, a first power end of the authentication module is connected with an output end of the charging module, a second power end of the authentication module is connected with the power contact, and the power contact is further connected with an input end of the voltage output module. The enabling end of the voltage output module is connected with the first enabling output end of the authentication module. Therefore, the equipment utilization rate is improved, and the user experience is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of charging, and in particular to a charging device and an interactive terminal. Background Art

[0002] Most of the terminal devices on the market use Bluetooth communication between each other. Although this method realizes the communication function, it cannot realize the charging function.

[0003] The USB interface of a terminal device can only charge the terminal device itself, but not the other terminal device. When both are in a low-power state, two USB cables are required to charge the two terminal devices. In addition, since the USB interfaces of the two terminal devices are occupied, they cannot be used for other functions (for example, data transmission), which reduces the utilization rate of the devices and the user experience. Utility Model Content

[0004] The purpose of the utility model is to address the deficiencies in the above-mentioned prior art and provide a charging device and an interactive terminal to solve the problems of low equipment utilization in the prior art.

[0005] To achieve the above purpose, the technical solution adopted in the embodiment of the present application is as follows:

[0006] In a first aspect, an embodiment of the present application provides a charging device for being arranged in an interactive terminal, the charging device comprising: a charging module, a charging interface, an authentication module, and a voltage output module;

[0007] The charging interface is used to connect to a preset power source, the input end of the charging module is connected to the charging interface, the output end of the charging module is used to connect to the power contact of the contact unit in the interactive terminal, and the communication contact and the power contact in the contact unit are respectively used to connect to the communication contact and the power contact of the mobile terminal;

[0008] The communication contact in the contact unit is connected to the data input end of the authentication module, the first control output end of the authentication module is connected to the control end of the charging module, the first power supply end of the authentication module is connected to the output end of the charging module, the second power supply end of the authentication module is connected to the power contact, the power contact is also connected to the input end of the voltage output module, the output end of the voltage output module is also used to connect to the terminal body in the interactive terminal, and the enable end of the voltage output module is connected to the first enable output end of the authentication module.

[0009] Optionally, the authentication module includes: a main control chip, a sampling unit, an encryption chip, and an authentication circuit;

[0010] The first input-output interface of the main control chip is the first control output end of the authentication module, and the clock interface and authentication data interface of the main control chip are respectively connected to the corresponding interfaces of the encryption chip; the data input interface of the authentication circuit is the data input end of the authentication module, the second input-output interface of the main control chip is connected to the corresponding interface of the authentication circuit, the data input interface of the main control chip is connected to the corresponding interface of the authentication circuit, and the power interface of the authentication circuit is connected to the power contact;

[0011] The first input end of the sampling unit is connected to the power contact, the second input end of the sampling unit is connected to the output end of the charging module, and the output end of the sampling unit is connected to the third input-output interface of the main control chip;

[0012] The fourth input-output interface of the main control chip is the first enable output terminal of the authentication module.

[0013] Optionally, the authentication module further includes: a communication pull-up unit; and the fifth input / output interface of the main control chip is connected to the data input interface of the authentication circuit through the communication pull-up unit.

[0014] Optionally, the charging device also includes: a power management module, a first power interface of the power management module is connected to the output end of the charging module, a second power interface of the power management module is connected to the power contact, and a control end of the power management module is connected to the second control output end of the authentication module.

[0015] Optionally, the charging device further comprises: a voltage module, a first input end of the voltage module is connected to the output end of the charging module, and a second input end of the voltage module is connected to the power contact;

[0016] The output end of the voltage module is connected to the power supply end of the authentication module.

[0017] Optionally, the voltage output module includes: a DC conversion chip and a voltage stabilizing chip;

[0018] Wherein, the input pin of the DC conversion chip and the input pin of the voltage stabilizing chip are the input ends of the voltage output module, which are used to connect the preset power contact;

[0019] The enable pin of the DC conversion chip and the enable pin of the voltage stabilizing chip are the enable ends of the voltage output module, and the output pin of the DC conversion chip and the output pin of the voltage stabilizing chip are the output ends of the power output module.

[0020] Optionally, the authentication circuit includes: a first switch tube, a second switch tube, a third switch tube, a fourth switch tube, a fifth switch tube, a sixth switch tube, and a first resistor;

[0021] The first input-output interface is connected to the control end of the first switch tube, the output end of the first switch tube is grounded, the input end of the first switch tube is connected to the control end of the second switch tube, the output end of the second switch tube is grounded, the control end of the third switch tube is connected to the second input-output interface, the output end of the third switch tube is grounded, and the input end of the second switch tube and the input end of the third switch tube are both connected to the data input interface through the first resistor;

[0022] The data input interface is also connected to the input end of the fourth switch tube, the output end of the fourth switch tube is connected to the data output interface, and the control end of the fourth switch tube is connected to the output end of the fifth switch tube;

[0023] The output end of the fifth switch tube is also grounded, the input end of the fifth switch tube is connected to the power contact, the control end of the fifth switch tube is connected to the input end of the sixth switch tube, the input end of the sixth switch tube is also connected to the power contact, the control end of the sixth switch tube is connected to the third input-output interface, and the output end of the sixth switch tube is grounded.

[0024] Optionally, the power management module includes: a seventh switch tube;

[0025] The first end of the seventh switch tube is connected, and the second end of the seventh switch tube is connected;

[0026] The first end of the seventh switch tube is connected to the output end of the charging module, the second end of the seventh switch tube is connected to the power contact, and the control end of the seventh switch tube is connected to the second control output end of the authentication module.

[0027] Optionally, the voltage module includes: a first unidirectional conductor, a second unidirectional conductor and a voltage conversion chip;

[0028] The positive pole of the first unidirectional conductor is connected to the output end of the charging module, and the positive pole of the second unidirectional conductor is connected to the power contact; the negative pole of the first unidirectional conductor and the negative pole of the second unidirectional conductor are both connected to the input interface and the enable interface of the voltage conversion chip; the output interface of the voltage conversion chip is connected to the power interface of the authentication module.

[0029] In a second aspect, an embodiment of the present application provides an interactive terminal, comprising: the charging device, the terminal body, and the contact unit described in any one of the first aspects above;

[0030] The charging device is connected to the terminal body, the charging device and the terminal body are respectively connected to the contact unit, and the communication contacts and the power contacts in the contact unit are respectively used to connect to the communication contacts and the power contacts of the mobile terminal.

[0031] Compared with the prior art, this application has the following beneficial effects:

[0032] The present application provides a charging device and an interactive terminal, the charging device comprising: a charging module, a charging interface, an authentication module, and a voltage output module; the charging interface is used to connect a preset power supply, the input end of the charging module is connected to the charging interface, the output end of the charging module is used to connect to the power contact of the contact unit in the interactive terminal, the communication contact and the power contact in the contact unit are respectively used to connect to the communication contact and the power contact of the mobile terminal; the communication contact in the contact unit is connected to the data input end of the authentication module, the first control output end of the authentication module is connected to the control end of the charging module, the first power end of the authentication module is connected to the output end of the charging module, the second power end of the authentication module is connected to the power contact, the power contact is also connected to the input end of the voltage output module, the output end of the voltage output module is also used to connect to the terminal body in the interactive terminal, and the enable end of the voltage output module is connected to the first enable output end of the authentication module. Thus, two terminal devices can be charged at the same time through one charging interface, which saves interfaces, improves equipment utilization, and improves user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0034] Figure 1 A schematic diagram of the structure of a charging device provided in an embodiment of the present application;

[0035] Figure 2 A schematic diagram of the structure of an authentication module provided for this application;

[0036] Figure 3 A schematic diagram of the structure of another charging device provided in this application;

[0037] Figure 4 A schematic diagram of the structure of another charging device provided in this application;

[0038] Figure 5 A schematic diagram of the structure of a voltage output module provided in this application;

[0039] Figure 6 A schematic diagram of the structure of an authentication circuit provided for this application;

[0040] Figure 7A schematic diagram of the structure of a voltage module provided in this application.

[0041] Icons: 11-charging module, 12-charging interface, 13-authentication module, 14-voltage output module, 2-contact unit, 131-main control chip, 132-sampling unit, 133-encryption chip, 134-authentication circuit, 15-power management module, 16-voltage module, 135-communication pull-up unit, 141-DC conversion chip, 142-voltage stabilizing chip, M1-first switch tube, M2-second switch tube, M3-third switch tube, M4-fourth switch tube, M5-fifth switch tube, M6-sixth switch tube, R1-first resistor, D1-first unidirectional conductor, D2-second unidirectional conductor, 162-voltage conversion chip. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0043] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for protection, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present application.

[0044] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0045] In addition, the terms “first”, “second”, etc., if used, are merely used to distinguish between the descriptions and should not be understood as indicating or implying relative importance.

[0046] It should be noted that, in the absence of conflict, the features in the embodiments of the present invention may be combined with each other.

[0047] In order to improve equipment utilization, the present application provides a charging device and an interactive terminal.

[0048] The interactive terminal provided in the present application includes a charging device. When the interactive terminal is electrically connected to the mobile terminal, the interactive terminal can supply power to the mobile terminal through the electrical connection with the mobile terminal when charging. For example, the electrical connection can be through a wire connection or through an electrical contact connection. The interactive terminal can be a computer, and the mobile terminal can be a mobile phone; the interactive terminal can be a handwriting tablet, and the mobile terminal can be a computer. As long as they are two terminals electrically connected to each other, they can form an interactive terminal and a mobile terminal. Thereby, it is possible to charge the interactive terminal and the mobile terminal simultaneously through the charging interface of the interactive terminal.

[0049] The charging device provided in the embodiment of the present application is explained below through specific examples. Figure 1 A schematic diagram of the structure of a charging device provided in an embodiment of the present application.

[0050] like Figure 1 As shown, the charging device is used to be arranged in an interactive terminal, and includes: a charging module 11, a charging interface 12, an authentication module 13, and a voltage output module 14.

[0051] The charging interface 12 is used to connect to a preset power supply, the input end of the charging module 11 is connected to the charging interface 12, the output end of the charging module 11 is used to connect to the power contacts of the contact unit 2 in the interactive terminal, and the communication contacts and power contacts in the contact unit 2 are respectively used to connect to the communication contacts and power contacts of the mobile terminal.

[0052] The communication contact in the contact unit is connected to the data input end of the authentication module 13, the first control output end of the authentication module 13 is connected to the control end of the charging module 11, the first power supply end of the authentication module 13 is connected to the output end of the charging module 11, the second power supply end of the authentication module 13 is connected to the power contact, the power contact is also connected to the input end of the voltage output module 14, the output end of the voltage output module 14 is also used to connect to the terminal body in the interactive terminal, and the enable end of the voltage output module 14 is connected to the first enable output end of the authentication module 13.

[0053] The charging interface 12 receives power from a preset power source and transmits the power to the power contacts so that the mobile terminal can obtain power through the power contacts. Thus, two terminal devices can be charged simultaneously through one charging interface, saving interfaces, improving device utilization, and improving user experience.

[0054] The authentication module 13 is connected to the charging module 11 and the power contact to realize the protocol authentication between the interactive terminal and the mobile terminal. After the authentication is passed, normal power is turned on.

[0055] The authentication module 13 controls the voltage output module 14 to supply power to the terminal body in the interactive terminal according to the output voltage of the charging module 11 and the voltage of the power supply contact. For example, if the mobile terminal consumes a lot of power, the power supplied to the terminal body is reduced; if the mobile terminal consumes a little power, the power supplied to the terminal body is increased. For example, the terminal body is the power load in the interactive terminal.

[0056] For example, the charging module 11 can be a GPD6112 chip, which is a charging deception chip that supports the PD protocol and the QC protocol. It can automatically complete the handshake with the charger according to the protocol priority, and complete the selection of the set voltage, with a maximum voltage application of 20V. In the embodiment of the present application, two-stage control is adopted. When the power is turned on, the control end of the charging module 11 defaults to 0, and the chip deceiving default voltage is 5V. When the device is authenticated and charging starts, the control end of the charging module 11 is set to 1, and the chip deceiving 9V voltage.

[0057] In summary, in this embodiment, the charging device includes: a charging module, a charging interface, an authentication module, and a voltage output module; the charging interface is used to connect to a preset power supply, the input end of the charging module is connected to the charging interface, the output end of the charging module is used to connect to the power contact of the contact unit in the interactive terminal, and the communication contact and the power contact in the contact unit are respectively used to connect to the communication contact and the power contact of the mobile terminal; the communication contact in the contact unit is connected to the data input end of the authentication module, the first control output end of the authentication module is connected to the control end of the charging module, the first power end of the authentication module is connected to the output end of the charging module, the second power end of the authentication module is connected to the power contact, the power contact is also connected to the input end of the voltage output module, the output end of the voltage output module is also used to connect to the terminal body in the interactive terminal, and the enable end of the voltage output module is connected to the first enable output end of the authentication module. Thus, two terminal devices can be charged at the same time through one charging interface, which saves interfaces, improves device utilization, and improves user experience.

[0058] In the above Figure 1 Based on the corresponding embodiment, the present application also provides an authentication module. Figure 2 This is a schematic diagram of the structure of an authentication module provided by this application. Figure 2 As shown, the authentication module 13 includes: a main control chip 131 , a sampling unit 132 , an encryption chip 133 , and an authentication circuit 134 .

[0059] The first input and output interface of the main control chip 131 is the first control output end of the authentication module 13, and the clock interface and the authentication data interface of the main control chip 131 are respectively connected to the corresponding interfaces of the encryption chip 133; the data input interface of the authentication circuit 134 is the data input end of the authentication module 13, the second input and output interface of the main control chip 131 is connected to the corresponding interface of the authentication circuit 134, the data input interface of the main control chip 131 is connected to the corresponding interface of the authentication circuit 134, and the power interface of the authentication circuit 134 is connected to the power contact.

[0060] A first input end of the sampling unit 132 is connected to a power contact, a second input end of the sampling unit 132 is connected to an output end of the charging module 11 , and an output end of the sampling unit 132 is connected to a third input / output interface of the main control chip 131 .

[0061] The fourth input / output interface of the main control chip 131 is the first enable output terminal of the authentication module 13 .

[0062] The first input end of the sampling unit 132 is the first power interface of the authentication module 13, and the second input end of the sampling unit 132 is the second power interface of the authentication module 13. The power end of the authentication module 13 is connected to the output end of the charging module 11 to supply power to each power-consuming unit (e.g., chip) in the authentication module 13.

[0063] The sampling unit 132 samples the output voltage and power contact of the charging module 11, and transmits the sampled voltage signal to the main control chip 131. The main control chip 131 can control the charging module 11 according to the sampled voltage signal. The main control chip 131 also obtains the charging data between devices through the authentication circuit 134 to realize data authentication.

[0064] During the communication process, the encryption chip 133 is responsible for encrypting the information that needs to be encrypted.

[0065] For example, two groups of voltage dividers are provided in the sampling unit 132 to sample the voltage of the power contacts respectively. For example, the output voltage of the charging module 11 can reach up to 9V, and the sampling voltage is reduced to 1.89V by the voltage divider resistor, which is within the working voltage 2.1V of the main control chip 131. When the voltage of the charging module 11 and the power contacts is at 5V, the voltage divider resistor reduces the sampling voltage to 1.05V. When the voltage of the power contacts is at 3.7V, the voltage divider resistor reduces the sampling voltage to 778mV. The current power consumption status of the mobile terminal can be determined by judging the voltage of the power contacts.

[0066] For example, the encryption chip 133 is a GPD6134 chip, and the main control chip 131 is a GPD6132 chip.

[0067] In summary, in this embodiment, the authentication module includes: a main control chip, a sampling unit, an encryption chip, and an authentication circuit; the first input and output interface of the main control chip is the first control output end of the authentication module, and the clock interface and the authentication data interface of the main control chip are respectively connected to the corresponding interface of the encryption chip; the data input interface of the authentication circuit is the data input end of the authentication module, the second input and output interface of the main control chip is connected to the corresponding interface of the authentication circuit, the data input interface of the main control chip is connected to the corresponding interface of the authentication circuit, and the power interface of the authentication circuit is connected to the power contact; the first input end of the sampling unit is connected to the power contact, the second input end of the sampling unit is connected to the output end of the charging module, and the output end of the sampling unit is connected to the third input and output interface of the main control chip; the fourth input and output interface of the main control chip is the first enable output end of the authentication module. Thus, the charging data authentication is realized by fewer components, and the cost of the charging device is reduced.

[0068] Further, in Figure 2 On the basis of the corresponding embodiment, in another embodiment of the present application, the authentication module 13 further includes: a communication pull-up unit 135 ; the fifth input / output interface of the main control chip 131 is connected to the data input interface of the authentication circuit 134 through the communication pull-up unit 135 .

[0069] Illustratively, the communication pull-up unit 135 is a pull-up resistor.

[0070] The mobile device is different in the charging state from the normal state. In the normal state, the hardware of the mobile device is actually a 3V pull-up resistor, while in the charging state, the internal 3V pull-up resistor will be turned off. In the charging mode, the communication pull-up unit 135 provides a pull-up source and a pull-up resistor for the charging device.

[0071] In summary, in this embodiment, the authentication module further includes: a communication pull-up unit; the fifth input / output interface of the main control chip is connected to the data input interface of the authentication circuit via the communication pull-up unit, thereby realizing the communication pull-up function in different states.

[0072] In the above Figure 1 Based on the corresponding embodiment, the present application also provides another charging device. Figure 3 This is a schematic diagram of the structure of another charging device provided in this application. Figure 3 As shown, the charging device further includes: a power management module 15 .

[0073] The first power interface of the power management module 15 is connected to the output end of the charging module 11 , the second power interface of the power management module 15 is connected to the power contact, and the control end of the power management module 15 is connected to the second control output end of the authentication module 13 .

[0074] In the actual charging process, the output end of the charging module 11 outputs charging power, and the power contacts may output the computer of the mobile device. Therefore, for safety and actual process needs, the output end of the charging module 11 cannot be kept connected to the power contacts all the time. Therefore, a power management module 15 is set, which ensures that after the charging interface 12 starts charging, the output end of the charging module 11 and the power contacts are not immediately connected together, but are controlled by the authentication module 13 to connect the two.

[0075] In summary, in this embodiment, the charging device further includes: a power management module, a first power interface of the power management module is connected to the output end of the charging module, a second power interface of the power management module is connected to the power contact, and a control end of the power management module is connected to the second control output end of the authentication module. Thus, charging safety is ensured.

[0076] In the above Figure 1 Based on the corresponding embodiments, the present application also provides another charging device. Figure 4 This is a schematic diagram of the structure of another charging device provided by the present application. Figure 4 As shown, the charging device further includes: a voltage module 16 .

[0077] A first input terminal of the voltage module 16 is connected to an output terminal of the charging module 11 , and a second input terminal of the voltage module 16 is connected to a power contact.

[0078] The output end of the voltage module 16 is connected to the power supply end of the authentication module 13 .

[0079] By setting up a voltage module, the authentication module 13 can be powered by the output end of the charging module 11, or the authentication module 13 can be powered by the mobile terminal through the power supply contact. The power supply voltage is converted into the working voltage of the authentication module 13, so that the authentication module 13 is not disconnected and is always in working state.

[0080] In summary, in this embodiment, the charging device further includes: a voltage module, a first input end of the voltage module is connected to an output end of the charging module, a second input end of the voltage module is connected to a power contact, and an output end of the voltage module is connected to a power end of the authentication module, thereby realizing power supply to the authentication module.

[0081] In the above Figure 1 Based on the corresponding embodiments, the present application also provides a voltage output module. Figure 5 This is a schematic diagram of the structure of a voltage output module provided in this application. Figure 5 As shown, the voltage output module 14 includes: a DC conversion chip 141 and a voltage stabilizing chip 142 .

[0082] The input pin of the DC conversion chip 141 and the input pin of the voltage stabilizing chip 142 are input terminals of the voltage output module 14 and are used to connect to preset power contacts.

[0083] The enable pin of the DC conversion chip 141 and the enable pin of the voltage regulator chip 142 are the enable terminals of the voltage output module 14 , and the output pin of the DC conversion chip 141 and the output pin of the voltage regulator chip 142 are the output terminals of the power output module.

[0084] For example, the DC conversion chip 141 and the voltage stabilizing chip 142 are two chips with different output voltages, wherein the output voltage of the DC conversion chip 141 is greater than the output voltage of the voltage stabilizing chip 142. If the power consumption of the mobile terminal is large, the power supply to the terminal body is reduced, and the DC conversion chip 141 is controlled to be turned off and the voltage stabilizing chip 142 is turned on. If the power consumption of the mobile terminal is small, the power supply to the terminal body is increased, and the DC conversion chip 141 is controlled to be turned on and the voltage stabilizing chip 142 is turned off. Thus, the output voltage of the charging module 11 is always kept stable.

[0085] In summary, in this embodiment, the voltage output module includes: a DC conversion chip and a voltage stabilizing chip; wherein the input pin of the DC conversion chip and the input pin of the voltage stabilizing chip are the input end of the voltage output module, which are used to connect to the preset power contact; the enable pin of the DC conversion chip and the enable pin of the voltage stabilizing chip are the enable end of the voltage output module, and the output pin of the DC conversion chip and the output pin of the voltage stabilizing chip are the output end of the power output module. Thus, the voltage stabilizing effect is achieved.

[0086] In the above Figure 2 Based on the corresponding embodiments, the present application also provides an authentication circuit. Figure 6 This is a schematic diagram of the structure of an authentication circuit provided by this application. Figure 6 As shown, the authentication circuit 134 includes: a first switch tube M1, a second switch tube M2, a third switch tube M3, a fourth switch tube M4, a fifth switch tube M5, a sixth switch tube M6, and a first resistor R1.

[0087] The first input-output end is connected to the control end of the first switch tube M1, the output end of the first switch tube M1 is grounded, the input end of the first switch tube M1 is connected to the control end of the second switch tube M2, the output end of the second switch tube M2 is grounded, the control end of the third switch tube M3 is connected to the second input-output end, the output end of the third switch tube M3 is grounded, and the input end of the second switch tube M2 and the input end of the third switch tube M3 are both connected to the data input interface through the first resistor R1.

[0088] The data input interface is also connected to the input end of the fourth switch tube M4 , the output end of the fourth switch tube M4 is connected to the data output interface, and the control end of the fourth switch tube M4 is connected to the output end of the fifth switch tube M5 .

[0089] The output end of the fifth switch tube M5 is also grounded, the input end of the fifth switch tube M5 is connected to the power contact, the control end of the fifth switch tube M5 is connected to the input end of the sixth switch tube M6, the input end of the sixth switch tube M6 is also connected to the power contact, the control end of the sixth switch tube M6 is connected to the third input-output end, and the output end of the sixth switch tube M6 is grounded.

[0090] It should be noted that the first input / output terminal, the second input / output terminal, and the third input / output terminal are input / output interfaces of the authentication circuit 134 .

[0091] When the contact unit contacts the mobile terminal, the control terminal of the second switch tube M2 is set to 1, and the second switch tube M2 is turned on, so that the first resistor R1 is grounded, and the data input terminal is connected to the first resistor R1.

[0092] After the first resistor R1 is grounded, the mobile terminal starts sending instructions through the communication contacts to start supplying power to the main control chip 131. After the main control chip 131 is powered on, the current charging state is determined to set the states of the first input / output terminal and the second input / output terminal.

[0093] After the first resistor R1 is connected, the main control chip 131 sets the third input and output terminal to 1, turns on the sixth switch tube M6, and grounds the control terminal of the fifth switch tube, thereby turning on the fifth switch tube. After the fifth switch tube is turned on, the electrical signal of the power contact is guided to the control terminal of the fourth switch tube M4 through the fifth switch tube, and the fourth switch tube M4 is turned on, connecting the data input interface and the data output interface to realize data transmission.

[0094] By way of example, the fifth switch tube may be a PMOS tube, and the first switch tube M1 , the second switch tube M2 , the third switch tube M3 , the fourth switch tube M4 , and the sixth switch tube M6 may be NMOS tubes.

[0095] In summary, in this embodiment, the first switch tube, the second switch tube, the third switch tube, the fourth switch tube, the fifth switch tube, the sixth switch tube, and the first resistor; the first input-output interface is connected to the control end of the first switch tube, the output end of the first switch tube is grounded, the input end of the first switch tube is connected to the control end of the second switch tube, the output end of the second switch tube is grounded, the control end of the third switch tube is connected to the second input-output interface, the output end of the third switch tube is grounded, and the input end of the second switch tube and the input end of the third switch tube are both connected to the data input interface through the first resistor; the data input interface is also connected to the input end of the fourth switch tube, the output end of the fourth switch tube is connected to the data output interface, and the control end of the fourth switch tube is connected to the output end of the fifth switch tube; the output end of the fifth switch tube is also grounded, the input end of the fifth switch tube is connected to the power contact, the control end of the fifth switch tube is connected to the input end of the sixth switch tube, the input end of the sixth switch tube is also connected to the power contact, the control end of the sixth switch tube is connected to the third input-output interface, and the output end of the sixth switch tube is grounded. Thus, power supply and communication control under authentication requirements are realized.

[0096] In the above Figure 3 On the basis of the corresponding embodiment, the power management module includes: a seventh switch tube.

[0097] The first end of the seventh switch tube is connected, and the second end of the seventh switch tube is connected.

[0098] A first end of the seventh switch tube is connected to the output end of the charging module 11 , a second end of the seventh switch tube is connected to the power contact, and a control end of the seventh switch tube is connected to the second control output end of the authentication module 13 .

[0099] The authentication module 13 controls the seventh switch tube to be turned on, and the output end of the charging module 11 is connected to the power contact. The authentication module 13 controls the seventh switch tube to be turned off, and the output end of the charging module 11 is not connected to the power contact.

[0100] In summary, in this embodiment, the power management module includes: a seventh switch tube; the first end of the seventh switch tube is connected, the second end of the seventh switch tube is connected, the first end of the seventh switch tube is connected to the output end of the charging module, the second end of the seventh switch tube is connected to the power contact, and the control end of the seventh switch tube is connected to the second control output end of the authentication module. Thus, it is ensured that the output end of the charging module is not connected to the power contact in real time, ensuring charging safety.

[0101] In the above Figure 4 Based on the corresponding embodiments, the present application also provides a voltage module. Figure 7 This is a schematic diagram of the structure of a voltage module provided in this application. Figure 7 As shown, the voltage module 16 includes: a first unidirectional conductor D1 , a second unidirectional conductor D2 and a voltage conversion chip 162 .

[0102] The positive pole of the first unidirectional conductor D1 is connected to the output end of the charging module 11, and the positive pole of the second unidirectional conductor D2 is connected to the power contact; the negative pole of the first unidirectional conductor D1 and the negative pole of the second unidirectional conductor D2 are both connected to the input interface and the enable interface of the voltage conversion chip 162; the output interface of the voltage conversion chip 162 is connected to the power interface of the authentication module 13.

[0103] For example, the voltage conversion chip 162 is a GPD6132 chip, which can provide a supply voltage of 2.1 V. The first unidirectional conductor D1 and the second unidirectional conductor D2 are provided so that the output end of the charging module 11 cannot be directly connected to the power contact in the voltage module 16 to affect the circuit operation.

[0104] In summary, in this embodiment, the voltage module includes: a first unidirectional conductor, a second unidirectional conductor and a voltage conversion chip; the positive electrode of the first unidirectional conductor is connected to the output end of the charging module 11, and the positive electrode of the second unidirectional conductor is connected to the power contact; the negative electrode of the first unidirectional conductor and the negative electrode of the second unidirectional conductor are both connected to the input interface and the enable interface of the voltage conversion chip; the output interface of the voltage conversion chip is connected to the power interface of the authentication module. Thus, power is supplied to the authentication module.

[0105] The present application also provides an interactive terminal, comprising: a charging device according to any one of the above embodiments, a terminal body, and a contact unit.

[0106] The charging device is connected to the terminal body, the charging device and the terminal body are respectively connected to the contact unit, and the communication contacts and the power contacts in the contact unit are respectively used to connect to the communication contacts and the power contacts of the mobile terminal.

[0107] Therefore, two terminal devices can be charged simultaneously through one charging port, which saves ports, improves device utilization, and enhances user experience.

[0108] The above description is only the preferred embodiment of the present application, and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application. It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. The above description is only the preferred embodiment of the present application, and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A charging device, It is characterized in that Used to be arranged in an interactive terminal, the charging device includes: a charging module, a charging interface, an authentication module, and a voltage output module; The charging interface is used to connect to a preset power source, the input end of the charging module is connected to the charging interface, the output end of the charging module is used to connect to the power contact of the contact unit in the interactive terminal, and the communication contact and the power contact in the contact unit are respectively used to connect to the communication contact and the power contact of the mobile terminal; The communication contact in the contact unit is connected to the data input end of the authentication module, the first control output end of the authentication module is connected to the control end of the charging module, the first power supply end of the authentication module is connected to the output end of the charging module, the second power supply end of the authentication module is connected to the power contact, the power contact is also connected to the input end of the voltage output module, the output end of the voltage output module is also used to connect to the terminal body in the interactive terminal, and the enable end of the voltage output module is connected to the first enable output end of the authentication module.

2. The charging device according to claim 1, It is characterized in that The authentication module includes: a main control chip, a sampling unit, an encryption chip, and an authentication circuit; The first input-output interface of the main control chip is the first control output end of the authentication module, and the clock interface and authentication data interface of the main control chip are respectively connected to the corresponding interfaces of the encryption chip; the data input interface of the authentication circuit is the data input end of the authentication module, the second input-output interface of the main control chip is connected to the corresponding interface of the authentication circuit, the data input interface of the main control chip is connected to the corresponding interface of the authentication circuit, and the power interface of the authentication circuit is connected to the power contact; The first input end of the sampling unit is connected to the power contact, the second input end of the sampling unit is connected to the output end of the charging module, and the output end of the sampling unit is connected to the third input-output interface of the main control chip; The fourth input-output interface of the main control chip is the first enable output terminal of the authentication module.

3. The charging device according to claim 2, It is characterized in that The authentication module further includes: a communication pull-up unit; and the fifth input / output interface of the main control chip is connected to the data input interface of the authentication circuit through the communication pull-up unit.

4. The charging device according to claim 1, It is characterized in that The charging device also includes: a power management module, a first power interface of the power management module is connected to the output end of the charging module, a second power interface of the power management module is connected to the power contact, and a control end of the power management module is connected to the second control output end of the authentication module.

5. The charging device according to claim 1, It is characterized in that The charging device further comprises: a voltage module, a first input end of the voltage module is connected to the output end of the charging module, and a second input end of the voltage module is connected to the power contact; The output end of the voltage module is connected to the power supply end of the authentication module.

6. The charging device according to claim 1, It is characterized in that The voltage output module includes: a DC conversion chip and a voltage stabilizing chip; Wherein, the input pin of the DC conversion chip and the input pin of the voltage stabilizing chip are the input ends of the voltage output module, which are used to connect the power contact; The enable pin of the DC conversion chip and the enable pin of the voltage stabilizing chip are the enable ends of the voltage output module, and the output pin of the DC conversion chip and the output pin of the voltage stabilizing chip are the output ends of the voltage output module.

7. The charging device according to claim 2, It is characterized in that The authentication circuit includes: a first switch tube, a second switch tube, a third switch tube, a fourth switch tube, a fifth switch tube, a sixth switch tube, and a first resistor; The first input-output interface is connected to the control end of the first switch tube, the output end of the first switch tube is grounded, the input end of the first switch tube is connected to the control end of the second switch tube, the output end of the second switch tube is grounded, the control end of the third switch tube is connected to the second input-output interface, the output end of the third switch tube is grounded, and the input end of the second switch tube and the input end of the third switch tube are both connected to the data input interface through the first resistor; The data input interface is also connected to the input end of the fourth switch tube, the output end of the fourth switch tube is connected to the data output interface, and the control end of the fourth switch tube is connected to the output end of the fifth switch tube; The output end of the fifth switch tube is also grounded, the input end of the fifth switch tube is connected to the power contact, the control end of the fifth switch tube is connected to the input end of the sixth switch tube, the input end of the sixth switch tube is also connected to the power contact, the control end of the sixth switch tube is connected to the third input-output interface, and the output end of the sixth switch tube is grounded.

8. The charging device according to claim 4, It is characterized in that The power management module includes: a seventh switch tube; The first end of the seventh switch tube is connected, and the second end of the seventh switch tube is connected; The first end of the seventh switch tube is connected to the output end of the charging module, the second end of the seventh switch tube is connected to the power contact, and the control end of the seventh switch tube is connected to the second control output end of the authentication module.

9. The charging device according to claim 5, It is characterized in that The voltage module includes: a first unidirectional conductor, a second unidirectional conductor and a voltage conversion chip; The positive pole of the first unidirectional conductor is connected to the output end of the charging module, and the positive pole of the second unidirectional conductor is connected to the power contact; the negative pole of the first unidirectional conductor and the negative pole of the second unidirectional conductor are both connected to the input interface and the enable interface of the voltage conversion chip; the output interface of the voltage conversion chip is connected to the power interface of the authentication module.

10. An interactive terminal, It is characterized in that include: The charging device, terminal body and contact unit as described in any one of claims 1 to 9 above; The charging device is connected to the terminal body, the charging device and the terminal body are respectively connected to the contact unit, and the communication contacts and the power contacts in the contact unit are respectively used to connect to the communication contacts and the power contacts of the mobile terminal.

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