CN214227853U - Communication system and charging system - Google Patents

Abstract

The application discloses a communication system and a charging system. The communication system includes: the power module, the one-way conduction module and the grounding module are sequentially connected in series; the first control module is electrically connected to a first connection point between the unidirectional conduction module and the grounding module, the second control module is electrically connected to a second connection point between the power module and the unidirectional conduction module, and the unidirectional conduction module allows current to flow from the power module to the grounding module but does not allow current to flow from the grounding module to the power module. By means of the mode, the circuit structure can be simplified, occupied resources are reduced, and the communication cost is reduced.

Description

Communication system and charging system

Technical Field

The present application relates to the field of communications circuit technologies, and in particular, to a communications system and a charging system.

Background

Most are many function combination type electronic product on the market today, and this type of electronic product designs usually has the control module who realizes different functions, but different control module have different operating condition, receives the restriction of different factors such as temperature rise, battery, operating voltage easily, consequently designs communication circuit between the different control module, realizes the intercommunication between each control module through communication circuit.

However, the communication method of the existing multifunctional combined electronic product needs more GPIO (General-purpose input/output) resources of the control module, the communication Circuit is complicated, the occupied area of a PCB (Printed Circuit Board) is large, or the cost of the communication method between the control modules is high, so that the cost of the product is high and the cost performance is low.

SUMMERY OF THE UTILITY MODEL

In view of the above, the present disclosure provides a communication system and a charging system, which can simplify a circuit structure to reduce occupied resources and facilitate reducing communication cost.

In order to solve the technical problem, the application adopts a technical scheme that: a communication system is provided. The communication system comprises a power supply module, a one-way conduction module and a grounding module, wherein the power supply module, the one-way conduction module and the grounding module are sequentially connected in series; the communication system further comprises a first control module and a second control module, wherein the first control module is electrically connected to a first connection point between the unidirectional conduction module and the grounding module, the second control module is electrically connected to a second connection point between the power module and the unidirectional conduction module, and the unidirectional conduction module allows current to flow from the power module to the grounding module but does not allow current to flow from the grounding module to the power module.

In an embodiment of the application, when the first control module outputs the electrical signals with different levels, the second control module receives the electrical signals with corresponding levels, and when the second control module outputs the electrical signals with different levels, the first control module receives the electrical signals with corresponding levels, so as to implement communication between the first control module and the second control module.

In an embodiment of the present application, when the first control module outputs a high-level electrical signal, the second control module receives the high-level electrical signal, and when the first control module outputs a low-level electrical signal, the second control module receives the low-level electrical signal; when the second control module outputs the high-level electric signal, the first control module receives the high-level electric signal, and when the second control module outputs the low-level electric signal, the first control module receives the low-level electric signal.

In an embodiment of the present application, the voltage output by the power module to the communication system is equal to an operating voltage of one of the first control module and the second control module, wherein the operating voltage of the first control module is different from the operating voltage of the second control module.

In one embodiment of the present application, the first control module is electrically connected to the power module, the second control module is electrically connected to the power module through the voltage conversion module, and the first control module controls the power module to supply power to the second control module, wherein the voltage output by the power module to the communication system is equal to the operating voltage of the second control module.

In an embodiment of the application, the unidirectional conducting module includes a diode, an anode of the diode is electrically connected to the second connection point, and a cathode of the diode is electrically connected to the first connection point.

In an embodiment of the present application, the communication system further includes a pull-up resistor electrically connected between the power module and the first connection point.

In an embodiment of the present application, the communication system further includes a pull-down resistor electrically connected between the second connection point and the grounding module.

In order to solve the above technical problem, the present application adopts another technical solution: a charging system is provided. The charging system comprises a power supply main body, a wireless charging device and a communication circuit, wherein the power supply main body comprises a first control module, the wireless charging device comprises a second control module, the communication circuit comprises a power supply module, a one-way conduction module and a grounding module, and the power supply module, the one-way conduction module and the grounding module are sequentially connected in series; the first control module is electrically connected to a first connection point between the unidirectional conduction module and the grounding module, and the second control module is electrically connected to a second connection point between the power module and the unidirectional conduction module, wherein the unidirectional conduction module allows current to flow from the power module to the grounding module, but does not allow current to flow from the grounding module to the power module.

In an embodiment of the application, a plurality of communication circuits are arranged between the first control module and the second control module, so that interaction of different information between the first control module and the second control module is realized through combination of electric signals interacted by the communication circuits.

The beneficial effect of this application is: different from the prior art, the application provides a communication system and a charging system. The first control module is electrically connected to a first connection point between the unidirectional conduction module and the grounding module, and the second control module is electrically connected to a second connection point between the power module and the unidirectional conduction module, so that current flows from the power module to the grounding module, and the current is not allowed to flow from the grounding module to the power module.

Therefore, the communication system can realize bidirectional information interaction between the first control module and the second control module, simplify the circuit structure to reduce the circuit resources (including the GPIO resources and the like) and the space resources (including the PCB and the like) occupied by the first control module and the second control module, and is favorable for reducing the communication cost.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application. Moreover, the drawings and written description are not intended to limit the scope of the inventive concepts in any manner, but rather to illustrate the inventive concepts to those skilled in the art by reference to specific embodiments.

FIG. 1 is a schematic block diagram of an embodiment of a communication system of the present application;

FIG. 2 is a schematic structural diagram of another embodiment of the communication system of the present application;

FIG. 3 is a schematic block diagram of an embodiment of a prior art communication system;

fig. 4 is a schematic structural diagram of a first embodiment of the charging system of the present application;

fig. 5 is a schematic structural diagram of a second embodiment of the charging system of the present application;

fig. 6 is a schematic structural diagram of a charging system according to a third embodiment of the present application.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the embodiments of the present application, and it is obvious that the described embodiments are some but not all of the embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application. The embodiments described below and the features of the embodiments can be combined with each other without conflict.

In order to solve the technical problems of high cost and occupation of more space resources of the communication system in the prior art, an embodiment of the present application provides a communication system. The communication system comprises a power supply module, a one-way conduction module and a grounding module, wherein the power supply module, the one-way conduction module and the grounding module are sequentially connected in series; the communication system further comprises a first control module and a second control module, wherein the first control module is electrically connected to a first connection point between the unidirectional conduction module and the grounding module, the second control module is electrically connected to a second connection point between the power module and the unidirectional conduction module, and the unidirectional conduction module allows current to flow from the power module to the grounding module but does not allow current to flow from the grounding module to the power module. As described in detail below.

Referring to fig. 1, fig. 1 is a schematic structural diagram of an embodiment of a communication system of the present application.

In one embodiment, the communication system includes a first control module 11 and a second control module 12; the first control module 11 and the second control module 12 are used for respectively implementing different functions.

Alternatively, the first control module 11 may be an MCU (micro controller Unit) or the like; the second control module 12 may be an MCU (micro controller Unit) or the like; the MCU can control to realize corresponding functions through commands, and the specific working process thereof belongs to the understanding scope of those skilled in the art, and will not be described herein again.

Inevitably, there is a difference between the first control module 11 and the second control module 12, and the difference is limited by different factors such as temperature rise, battery, working voltage, and the like, and the first control module 11 and the second control module 12 cannot perform information interaction when they are directly connected, so that the first control module 11 and the second control module 12 cannot realize communication.

In view of this, the communication system further includes a power module 13, a unidirectional conducting module 14, and a grounding module 15, wherein the power module 13, the unidirectional conducting module 14, and the grounding module 15 are sequentially connected in series. The power module 13 is used for providing voltage input for the communication system; the unidirectional conducting module 14 plays a role in unidirectional conducting, and allows current to flow from the power module 13 to the grounding module 15, but does not allow current to flow from the grounding module 15 to the power module 13; the grounding module 15 is used for grounding the communication system in this embodiment.

The first control module 11 is electrically connected to a first connection point a between the unidirectional conducting module 14 and the grounding module 15, and the second control module 12 is electrically connected to a second connection point B between the power module 13 and the unidirectional conducting module 14.

Specifically, when the first control module 11 outputs electrical signals with different levels, the second control module 12 receives the electrical signals with corresponding levels, and when the second control module 12 outputs electrical signals with different levels, the first control module 11 receives the electrical signals with corresponding levels, so as to implement communication between the first control module 11 and the second control module 12.

In this way, the first control module 11 and the second control module 12 of this embodiment can recognize the action command indicated by different electrical signals by receiving the electrical signals corresponding to the electrical levels, so as to implement bidirectional communication between the first control module 11 and the second control module 12, specifically allow the first control module 11 to transmit information to the second control module 12, and also allow the second control module 12 to transmit information to the first control module 11, that is, one communication circuit can implement bidirectional information interaction between the two control modules, so as to reduce occupied resources, avoid an excessively complicated communication system, further facilitate simplification of a circuit structure, and facilitate reduction of communication cost.

Referring to fig. 2, fig. 2 is a schematic structural diagram of another embodiment of the communication system of the present application.

In an embodiment, the communication system includes a first control module 11 and a second control module 12, where the first control module 11 and the second control module 12 are used to respectively implement different functions. Alternatively, the first control module 11 may be an MCU (micro controller Unit) or the like, and the second control module 12 may also be an MCU (micro controller Unit) or the like.

For example, the communication system of this embodiment may be applied to a mobile power supply having a wireless charging function, the first control module 11 may be a control center of the whole mobile power supply for controlling and coordinating the normal operation of the whole mobile power supply, the second control module 12 may be a control center of a wireless charging portion of the mobile power supply for implementing the wireless charging function of the mobile power supply, and there is information interaction between the first control module 11 and the second control module 12 for implementing corresponding control operation.

Inevitably, there is a difference between the first control module 11 and the second control module 12, and the first control module 11 cannot be directly connected to the second control module 12 to realize communication due to the limitation of different factors such as temperature rise, battery, and operating voltage.

In view of this, the communication system further includes a power module 13, a unidirectional conducting module 14, and a grounding module 15, wherein the power module 13, the unidirectional conducting module 14, and the grounding module 15 are sequentially connected in series. The power module 13 is used to provide a voltage input for the communication system. VDD5V0 shown in fig. 2 represents that the power module 13 provides a voltage input of 5.0V to the communication system of this embodiment. The unidirectional conducting module 14 plays a role in unidirectional conducting, and allows current to flow from the power module 13 to the grounding module 15, but does not allow current to flow from the grounding module 15 to the power module 13; the grounding module 15 is used for grounding the communication system in this embodiment.

The first control module 11 and the second control module 12 are respectively connected to the power module 13, the unidirectional conducting module 14 and the grounding module 15. Specifically, the first control module 11 is electrically connected to a first connection point a between the unidirectional conducting module 14 and the grounding module 15, and the second control module 12 is electrically connected to a second connection point B between the power module 13 and the unidirectional conducting module 14. The unidirectional conducting module 14 is capable of allowing current to flow from the power module 13 to the grounding module 15, and not allowing current to flow from the grounding module 15 to the power module 13.

Based on the above embodiment, when the first control module 11 outputs the electrical signals with different levels, the second control module 12 receives the electrical signals with corresponding levels, and when the second control module 12 outputs the electrical signals with different levels, the first control module 11 receives the electrical signals with corresponding levels, so that the bidirectional communication between the first control module 11 and the second control module 12 can be realized. That is to say, the communication system of the present application can implement bidirectional information interaction between the first control module 11 and the second control module 12, and can simplify the circuit structure to reduce occupied resources and facilitate reducing the communication cost.

That is, if the first control module 11 outputs a high-level electrical signal, the second control module 12 may receive a low-level electrical signal or a high-level electrical signal; if the first control module 11 outputs the electrical signal of the low level, the second control module 12 can receive the electrical signal of the opposite level to the level received when the first control module 11 outputs the electrical signal of the high level. In the digital logic circuit, the low level is represented by 0, and the high level is represented by 1.

Referring to fig. 2, in an embodiment, when the first control module 11 outputs a high-level electrical signal, the second control module 12 receives a corresponding high-level electrical signal, and when the first control module 11 outputs a low-level electrical signal, the second control module 12 receives a corresponding low-level electrical signal; when the second control module 12 outputs the electrical signal of high level, the first control module 11 receives the corresponding electrical signal of high level, and when the second control module 12 outputs the electrical signal of low level, the first control module 11 receives the corresponding electrical signal of low level.

It can be seen that, through the communication system of the present application, bidirectional information interaction between the first control module 11 and the second control module 12 can be achieved, so as to achieve bidirectional communication between the first control module 11 and the second control module 12, that is, allowing the first control module 11 to transmit information to the second control module 12 and also allowing the second control module 12 to transmit information to the first control module 11. In one embodiment, the voltage output by the power module 13 to the communication system is equal to the operating voltage of one of the first control module 11 and the second control module 12, wherein the operating voltage of the first control module 11 is different from the operating voltage of the second control module 12.

That is to say, the communication system of the present embodiment and the first control module 11 or the second control module 12 share the same voltage input, and the design can avoid the additional design of the power supply for the communication system of the present embodiment, which is beneficial to further simplifying the circuit, thereby avoiding the circuit structure of the communication system from being too complicated.

Further, the first control module 11 is electrically connected to the power module 13, and the second control module 12 is electrically connected to the power module 13 through a voltage conversion module (not shown). The first control module 11 controls the power module 13 to supply power to the second control module 12, wherein the voltage output by the power module 13 to the communication system is equal to the working voltage of the second control module 12, that is, the working voltage for controlling the second control module 12 to work is simultaneously input to the communication system of this embodiment.

The voltage conversion module may be a DC-DC circuit (DC-DC circuit) or the like. Alternatively, the DC-DC circuit may be a Buck circuit (a step-down converter circuit, a DC-DC circuit whose output voltage is lower than the input voltage), a Boost circuit (a step-up converter circuit, a DC-DC circuit whose output voltage is higher than the input voltage), a Buck-Boost circuit (a step-up converter circuit, a DC-DC circuit whose output voltage is lower than or higher than the input voltage), or the like.

That is, in this embodiment, when the second control module 12 does not operate, the first control module 11 may control to cut off the voltage input provided to the second control module 12, and at the same time, the voltage input of the communication system is also cut off, and there is no extra power consumption in the communication system, so that the power consumption of the communication system of this embodiment can be reduced.

Also, the reason why the supply of the voltage input to the second control module 12 and the communication system of the present embodiment is allowed to be stopped at the same time is that: when the second control module 12 does not work, there is no information interaction between the first control module 11 and the second control module 12, and the communication system of this embodiment may stop working.

For example, taking the application environment of the mobile power supply with wireless charging function as an example, the working voltage of the first control module 11 may be 3.3V, the working voltage of the second control module 12 may be 5.0V, and the voltage input provided by the power module 13 to the communication system of this embodiment is 3.3V or 5.0V. Fig. 2 shows a case where the voltage input provided by the power module 13 to the communication system of this embodiment is 5.0V, that is, the communication system of this embodiment and the second control module 12 share the same voltage input. Therefore, when the second control module 12 does not work, that is, the mobile power supply does not need to wirelessly charge the load device, the control center of the whole mobile power supply, that is, the first control module 11 can control to cut off the voltage input provided to the second control module 12, and at the same time, the voltage input of the communication system is also cut off, and at this time, the communication system does not have extra electric quantity consumption, thereby being beneficial to reducing the electric energy consumption in the mobile power supply.

In an alternative embodiment, the voltage output by the power module 13 to the communication system may also be equal to the operating voltage of the first control module 11, which is not limited herein.

In one embodiment, the unidirectional conducting module 14 includes a diode 141, and the anode of the diode 141 is electrically connected to the second connection point B, and the cathode is electrically connected to the first connection point a. That is to say, the cathode of the diode 141 is connected to the first control module 11 and the grounding module 15, and the anode is connected to the second control module 12 and the power module 13, respectively, so as to allow the current to flow from the power module 13 to the grounding module 15, but not allow the current to flow from the grounding module 15 to the power module 13, thereby realizing bidirectional information interaction between the first control module 11 and the second control module 12.

Referring to fig. 2, the communication system further includes a pull-up resistor 16, wherein the pull-up resistor 16 is electrically connected between the power module 13 and the first connection point a.

The communication system further comprises a pull-down resistor 17, the pull-down resistor 17 being electrically connected between the second connection point B and the grounding module 15.

It should be noted that the resistance values of the pull-up resistor 16 and the pull-down resistor 17 are as large as possible, for example, the design can make the current in the communication system in this embodiment as small as possible, so as to reduce the power consumption in the communication system in this embodiment and save the power. The specific operation principle of the pull-up resistor 16 and the pull-down resistor 17 belongs to the understanding scope of those skilled in the art, and will not be described herein again.

The communication process between the first control module 11 and the second control module 12 in the communication system shown in fig. 2 is explained as follows:

when the first control module 11 outputs a high-level electrical signal, the second control module 12 receives a corresponding high-level electrical signal; when the first control module 11 outputs an electrical signal of a low level, the second control module 12 receives a corresponding electrical signal of a low level. When the second control module 12 outputs a high-level electrical signal, the first control module 11 receives a corresponding high-level electrical signal; when the second control module 12 outputs an electrical signal of a low level, the first control module 11 receives a corresponding electrical signal of a low level. That is, the first control module 11 and the second control module 12 receive electrical signals of different levels to realize communication.

Specifically, as shown in fig. 2, the operating voltage of the first control module 11 is 3.3V, and the operating voltage of the second control module 12 is 5.0V. When the first control module 11 outputs a high-level electrical signal, for example, the voltage of the electrical signal output by the first control module 11 is 3.3V, the potential of the first connection point a is 3.3V, and it has a voltage drop of 0.7V according to the characteristics of the diode 141, the potential of the second connection point B is 4.0V, where 4.0V belongs to a high level, that is, the second control module 12 receives a high-level electrical signal; on the contrary, when the first control module 11 outputs the low level electrical signal, for example, the voltage of the electrical signal output by the first control module 11 is 0V, the potential of the first connection point a is 0V, which has a voltage drop of 0.7V according to the characteristic of the diode 141, and the potential of the second connection point B is 0.7V, where 0.7V belongs to the low level, that is, the second control module 12 receives the corresponding low level electrical signal.

Similarly, when the second control module 12 outputs a high-level electrical signal, for example, the voltage of the electrical signal output by the second control module 12 is 5.0V, the potential of the second connection point B is 5.0V, and has a voltage drop of 0.7V according to the characteristics of the diode 141, the potential of the first connection point a is 4.3V, wherein 4.3V belongs to a high level, that is, the first control module 11 receives a high-level electrical signal; on the contrary, when the second control module 12 outputs a low-level electrical signal, for example, the output voltage of the second control module 12 is 0V, the potential of the second connection point B is 0V, the potential of the first connection point a is also 0V, wherein 0V belongs to a low level, that is, the first control module 11 receives a corresponding low-level electrical signal.

Of course, by simply deforming the circuit of the communication system in this embodiment, the second control module 12 may receive the low-level electrical signal when the first control module 11 outputs the high-level electrical signal, and the second control module 12 receives the high-level electrical signal when the first control module 11 outputs the low-level electrical signal; when the second control module 12 outputs the electrical signal with the high level, the first control module 11 receives the electrical signal with the low level, and when the second control module 12 outputs the electrical signal with the low level, the first control module 11 receives the electrical signal with the high level, which is not limited herein.

With the above embodiment, when the first control module 11 outputs the electrical signals of different levels, the second control module 12 receives the electrical signals of corresponding levels, and when the second control module 12 outputs the electrical signals of different levels, the first control module 11 receives the electrical signals of corresponding levels. That is to say, the communication system of the present application can realize bidirectional information interaction between the first control module 11 and the second control module 12, and can simplify the circuit structure to reduce the resources occupied by the communication system, and is beneficial to reducing the communication cost.

Referring to fig. 3, fig. 3 is a schematic diagram of an embodiment of a communication system in the prior art.

The communication system comprises a control module MCU _ A21 and a control module MCU _ B22; for example, the operating voltage of MCU _ a 21 is 3.3V, and the operating voltage of MCU _ B22 is 5.0V; it is understood that the operating voltage represents the voltage required by the MCU _ a 21 and the MCU _ B22 to operate normally.

Because the working voltages of the MCU _ A21 and the MCU _ B22 are different, the MCU _ A and the MCU _ B cannot be directly connected to realize communication between the control modules. In view of this, the prior art 1 further includes a level conversion module 23, and the control modules MCU _ a 21 and MCU _ B22 are respectively connected to the level conversion module 23, so as to implement communication between the control modules through the level conversion module 23. The communication mode can realize various communication information by occupying less GPIO (General-purpose input/output port), wherein the communication information can be defined by self, and the communication mode has smaller manufacturing area and saves more space because the communication mode is connected with the control module through the level conversion module 23; the working voltages of the control modules are different, the connection level conversion module 23 converts the levels of the control modules into the same level, and the level conversion module 23 is respectively connected with pins SDA, SCL and INT of the MCU _ A21 and the MCU _ B22; where SDA is a serial data pin of I2C bus (bidirectional binary synchronous serial bus), and SCL is a serial clock pin of I2C bus.

It is easy to understand that the chip of the level conversion module 23 is expensive, so the communication system disclosed in the above prior art has a high cost. The communication system can realize bidirectional information interaction between the first control module 11 and the second control module 12 through the power module 13, the one-way conduction module 14 and the grounding module 15, and has the advantages of simple circuit, easy realization and lower cost.

Referring to fig. 4 and 5, fig. 4 is a schematic structural diagram of a charging system according to a first embodiment of the present application, and fig. 5 is a schematic structural diagram of a charging system according to a second embodiment of the present application.

In one embodiment, the charging system includes a power supply main body 41, a wireless charging device 42, and a communication circuit 43. The power supply main body 41 has a power supply for supplying power input to the wireless charging device 42 to support the wireless charging function of the wireless charging device 42 for supplying wireless charging to the load device. The communication circuit 43 is used for information exchange between the power supply main body 41 and the wireless charging device 42.

The wireless charging device 42 is configured to wirelessly charge a load device having a wireless charging function. Alternatively, the wireless charging device 42 may employ the Qi wireless charging standard.

Qi is a Wireless charging standard provided by the Wireless Power Consortium (hereinafter referred to as "alliance") which is the first global organization for promoting Wireless charging technology, and has two characteristics of convenience and universality. Products of different brands can be charged by using a Qi wireless charger as long as the products have the identification of Qi; the wireless charging device overcomes the technical bottleneck that the wireless charging cannot be realized, and products such as mobile phones, cameras and computers can be charged by using Qi wireless chargers, so that the possibility is provided for large-scale application of the wireless charging.

The power main body 41 includes a first control module 411, the wireless charging device 42 includes a second control module 421, and the communication circuit 43 includes a power module 431, a unidirectional conducting module 432, and a grounding module 433.

The power module 431, the one-way conduction module 432 and the grounding module 433 are sequentially connected in series; the first control module 411 is electrically connected to a first connection point X between the unidirectional conducting module 432 and the ground module 433, and the second control module 421 is electrically connected to a second connection point Y between the power module 431 and the unidirectional conducting module 432, wherein the unidirectional conducting module 432 allows current to flow from the power module 431 to the ground module 433, but does not allow current to flow from the ground module 433 to the power module 431; when the first control module 411 outputs electrical signals with different levels, the second control module 421 receives the electrical signals with corresponding levels, and when the second control module 421 outputs electrical signals with different levels, the first control module 411 receives the electrical signals with corresponding levels, so as to implement communication between the first control module 411 and the second control module 421.

When the first control module 411 outputs an electrical signal with a high level, the second control module 421 receives an electrical signal with a high level, and when the first control module 411 outputs an electrical signal with a low level, the second control module 421 receives an electrical signal with a low level; when the second control module 421 outputs the high-level electrical signal, the first control module 411 receives the high-level electrical signal, and when the second control module 421 outputs the low-level electrical signal, the first control module 411 receives the low-level electrical signal.

It should be noted that the communication principle among the first control module 411, the second control module 421 and the communication circuit 43 in this embodiment is the same as the communication principle of the communication system described in the above embodiments, and thus, the description thereof is omitted.

Further, a plurality of communication circuits 43 are disposed between the first control module 411 and the second control module 421, so that interaction of different information between the first control module 411 and the second control module 421 is realized through combination of electrical signals interacted by the communication circuits 43. Specifically, one communication circuit may enable one of the first control module 411 and the second control module 421 to transmit a high level signal or a low level signal to the other, and the interaction of different information between the first control module 411 and the second control module 421 may be implemented through a combination of the high level signal or the low level signal transmitted by different communication circuits in the plurality of communication circuits.

Through the manner, the circuit structure can be simplified to reduce the circuit resources (including the GPIO resources and the like) and the space resources (including the PCB and the like) occupied by the first control module 411 and the second control module 421, and the communication cost can be reduced.

Referring to fig. 6, fig. 6 is a schematic structural diagram of a charging system according to a third embodiment of the present application.

In an embodiment, the charging system includes a first control module 511, a second control module 521 and a communication circuit 530, wherein the first control module 511 and the second control module 521 are respectively connected to the communication circuit 530 for information interaction. The specific operation mode of the communication circuit 530 may be the operation mode of the communication circuit in the above embodiments, and will not be described herein again.

Further, the charging system further includes a first voltage conversion module 512, specifically, the first voltage conversion module 512 may be a DC-DC circuit or the like, and the first voltage conversion module 512 is connected to the first control module 511.

Alternatively, the first voltage conversion module 512 may include a Buck circuit (a Buck converter circuit, a DC-DC circuit whose output voltage is lower than the input voltage), a Boost circuit (a Boost converter circuit, a DC-DC circuit whose output voltage is higher than the input voltage), a Buck-Boost circuit (a Buck-Boost converter circuit, a DC-DC circuit whose output voltage is lower than or higher than the input voltage), and the like.

The charging system further comprises a first voltage input module 513, and the first voltage input module 513 is connected to the first control module 511. For example, the first voltage input module 513 may provide a voltage input of 3.3V to the first control module 511 of the present embodiment. The first voltage input module 513 serves as a power supply circuit for the first control module 511 and as a data calculation reference circuit.

The charging system further includes a lamp set and key module 514 for implementing the functions of the indicator lamp and the key of the charging system.

The charging system further comprises a first temperature rise monitoring module 515, wherein the first temperature rise monitoring module 515 is connected with the first control module 511 and is used for monitoring the surface temperature rise and the like of the battery and other heating devices.

The charging system further comprises a battery pack and battery management system module 516, wherein the battery pack and battery management system module 516 is connected with the first control module 511 and used as a battery pack of a circuit to be protected of the charging system, so that overcharge, overdischarge, overcurrent, short circuit and the like can be prevented, and the charging system has a protection function.

The charging system further includes a second voltage conversion module 522, specifically, the second voltage conversion module may be a DC-DC circuit or the like, and the second voltage conversion module 522 is connected to the second control module 521.

Alternatively, the second voltage conversion module 522 may include a Buck circuit (Buck converter circuit), a Boost circuit (Boost converter circuit), a Buck-Boost circuit (Buck-Boost converter circuit), and the like.

The charging system further includes a second voltage input module 523, and the second voltage input module 523 is connected to the second control module 521. For example, the second voltage input module 523 can provide a voltage input of 5.0V to the second control module 521 of the present embodiment. The second voltage input module 523 serves as a power supply circuit for the second control module 521 and as a data calculation reference circuit.

The charging system further includes a full-bridge driving and MOSFETs circuit 524, and the full-bridge driving and MOSFETs circuit 524 is connected to the second control module 521, and is configured to implement full-bridge driving and rectification.

The charging system further comprises a second temperature rise monitoring module 525, and the second temperature rise monitoring module 525 is connected with the second control module 521 and is used for monitoring the surface temperature rise of the wireless charging coil in the charging system.

The charging system also includes auxiliary circuitry 526, such as decoding circuitry and the like.

In summary, the communication system and the charging system provided by the present application are electrically connected to the first connection point between the unidirectional conducting module and the ground module through the first control module, and the second control module is electrically connected to the second connection point between the power module and the unidirectional conducting module, so that when the first control module outputs electrical signals of different levels, the second control module receives electrical signals of corresponding levels, and when the second control module outputs electrical signals of different levels, the first control module receives electrical signals of corresponding levels, so as to implement bidirectional communication between the first control module and the second control module.

That is to say, the communication system of the present application can realize bidirectional information interaction between the first control module and the second control module, and can simplify the circuit structure to reduce the circuit resources (including the GPIO resources, etc.) and the space resources (including the PCB, etc.) occupied by the first control module and the second control module, and is favorable for reducing the communication cost.

Further, the communication circuit connects power main part and wireless charging device respectively, make power main part and wireless charging device can be connected in order to realize the information interaction, power main part's first control module and wireless charging device's second control module can be when the signal of telecommunication of different levels of other side output, receive the signal of telecommunication of corresponding level, make power main part and wireless charging device occupy less resource and realize the communication, realize each item function of charging system in coordination, thereby can avoid circuit structure too complicated, and be favorable to reducing charging system's cost.

In addition, in the present application, unless otherwise expressly specified or limited, the terms "connected," "stacked," and the like are to be construed broadly, e.g., as meaning permanently attached, removably attached, or integral to one another; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.

Claims (10)

1. A communication system is characterized by comprising a power supply module, a one-way conduction module and a grounding module, wherein the power supply module, the one-way conduction module and the grounding module are sequentially connected in series;

the communication system further comprises a first control module and a second control module, wherein the first control module is electrically connected to a first connection point between the unidirectional conduction module and the grounding module, the second control module is electrically connected to a second connection point between the power module and the unidirectional conduction module, and the unidirectional conduction module allows current to flow from the power module to the grounding module but does not allow current to flow from the grounding module to the power module.

2. The communication system of claim 1,

when the first control module outputs electric signals with different levels, the second control module receives the electric signals with corresponding levels, and when the second control module outputs the electric signals with different levels, the first control module receives the electric signals with corresponding levels, so that communication between the first control module and the second control module is realized.

3. The communication system of claim 2,

when the first control module outputs a high-level electric signal, the second control module receives the high-level electric signal, and when the first control module outputs a low-level electric signal, the second control module receives the low-level electric signal;

when the second control module outputs a high-level electric signal, the first control module receives the high-level electric signal, and when the second control module outputs a low-level electric signal, the first control module receives the low-level electric signal.

4. The communication system of any one of claims 1 to 3, wherein the voltage output by the power module to the communication system is equal to an operating voltage of one of the first control module and the second control module, wherein the operating voltage of the first control module is different from the operating voltage of the second control module.

5. The communication system according to claim 4, wherein the first control module is electrically connected to the power supply module, the second control module is electrically connected to the power supply module through a voltage conversion module, and the first control module controls the power supply module to supply power to the second control module, wherein the voltage output by the power supply module to the communication system is equal to the operating voltage of the second control module.

6. The communication system according to any one of claims 1 to 3, wherein the unidirectional conducting module comprises a diode, an anode of the diode is electrically connected to the second connection point, and a cathode of the diode is electrically connected to the first connection point.

7. The communication system according to any one of claims 1 to 3, further comprising a pull-up resistor electrically connected between the power supply module and the first connection point.

8. The communication system of any one of claims 1 to 3, further comprising a pull-down resistor electrically connected between the second connection point and the grounding module.

9. A charging system is characterized by comprising a power supply main body, a wireless charging device and a communication circuit, wherein the power supply main body comprises a first control module, the wireless charging device comprises a second control module, the communication circuit comprises a power supply module, a one-way conduction module and a grounding module, and the power supply module, the one-way conduction module and the grounding module are sequentially connected in series;

the first control module is electrically connected to a first connection point between the unidirectional conducting module and the grounding module, and the second control module is electrically connected to a second connection point between the power module and the unidirectional conducting module, wherein the unidirectional conducting module allows current to flow from the power module to the grounding module, but does not allow current to flow from the grounding module to the power module.

10. The charging system according to claim 9, wherein a plurality of communication circuits are provided between the first control module and the second control module, so that interaction of different information between the first control module and the second control module is realized through a combination of electrical signals interacted between the communication circuits.

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