CN219382252U

CN219382252U - Internal communication system of charging pile and charging pile

Info

Publication number: CN219382252U
Application number: CN202320494163.4U
Authority: CN
Inventors: 罗伟; 张宏利
Original assignee: Guangdong Tianshu New Energy Technology Co ltd
Current assignee: Guangdong Tianshu New Energy Technology Co ltd
Priority date: 2023-03-14
Filing date: 2023-03-14
Publication date: 2023-07-21
Anticipated expiration: 2033-03-14

Abstract

The utility model relates to the technical field of charging piles, in particular to an internal communication system of a charging pile and the charging pile, wherein the charging pile comprises a main cabinet and at least one terminal; the main cabinet is internally provided with a power supply end, a first control unit and a first carrier module, and the terminal is internally provided with a second control unit, a second carrier module and a charging gun; the power supply end is respectively connected with the main cabinet and the terminal through power lines; two ends of the first carrier module are respectively connected with the first control unit and the power line; two ends of the second carrier module are respectively connected with the power line and the second control unit, and the second control unit is also connected with the charging gun; the utility model can improve the communication rate of the charging pile and expand the communication distance.

Description

Internal communication system of charging pile and charging pile

Technical Field

The utility model relates to the technical field of charging piles, in particular to an internal communication system of a charging pile and the charging pile.

Background

The charging pile product main cabinet and the terminals in the related art are flexibly matched, namely one main cabinet CAN be matched with a plurality of terminals, and some terminals are even dozens of terminals, and CAN communication is adopted for communication between the main cabinet and the terminals. With the increase of the number of terminals and the limitation of the arrangement positions of the station equipment, the distance between the main cabinet and the terminals is more and more long, the transmission rate between the main cabinet and the terminals is 250Kbps, and the distance basically exceeds 100 meters, so that some problems exist in communication between the main cabinet and the terminals.

Therefore, it is necessary to improve the existing intra-stack communication mode to overcome the problems of low communication rate and limited communication distance.

Disclosure of Invention

In view of the above, an object of the embodiments of the present utility model is to provide a charging pile internal communication system and a charging pile, which improve the existing charging pile internal communication mode, so as to increase the communication rate of the charging pile and expand the communication distance.

In one aspect, an embodiment of the present utility model provides a charging stack internal communication system, where the charging stack includes a main cabinet and at least one terminal; the main cabinet is internally provided with a power supply end, a first control unit and a first carrier module, and the terminal is internally provided with a second control unit, a second carrier module and a charging gun;

the power supply end is respectively connected with the main cabinet and the terminal through power lines; two ends of the first carrier module are respectively connected with the first control unit and the power line; and two ends of the second carrier module are respectively connected with the power line and the second control unit, and the second control unit is also connected with the charging gun.

Optionally, a first power module is further disposed in the main cabinet, two ends of the first power module are respectively connected with the power line and the first control unit, and the first power module is used for converting a power supply of the power end into a power supply adapted to the first control unit.

Optionally, a second power module is further arranged in the terminal, two ends of the second power module are respectively connected with the power line and the second control unit, and the second power module is used for converting a power supply of the power end into a power supply adapted to the second control unit.

Optionally, the first carrier module includes a first modem and a first coupler that are connected to each other, an input end of the first modem is connected to the first control unit, and an output end of the first coupler is connected to the power line.

Optionally, a circuit breaker is arranged in the main cabinet, an input end of the circuit breaker is connected with the power end, and an output end of the circuit breaker is respectively connected with the first power module and the second power module through power lines.

Optionally, the second carrier module includes a second modem and a second coupler that are connected to each other, an input end of the second modem is connected to the second control unit, and an output end of the second coupler is connected to the power line.

Optionally, the second control unit is in communication connection with the charging gun through a CAN.

Optionally, the power supply is an alternating current, and the first power module is configured to convert the alternating current into a direct current voltage adapted to the first control unit.

Optionally, the power supply is a dc high voltage, and the first power module is configured to convert the dc high voltage into a dc voltage adapted to the first control unit.

On the other hand, the embodiment of the utility model provides a charging pile, which comprises any one of the charging pile internal communication systems.

The embodiment of the utility model has the following beneficial effects: the internal communication system of the charging pile provided by the embodiment adopts a power line carrier communication mode, modulates information data sent by the first control unit into a high-frequency signal through the first carrier module, then couples the high-frequency signal to a power line for transmission, decouples the high-frequency signal received by the power line and then sends the high-frequency signal to the first control unit; modulating information data sent by the second control unit into a high-frequency signal through a second carrier module, coupling the high-frequency signal to a power line for transmission, decoupling the high-frequency signal received by the power line, and sending the high-frequency signal to the second control unit; the communication rate of the charging pile can be improved, and the communication distance can be extended.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions of the prior art, the drawings that are needed in the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a connection schematic diagram of a communication system inside a charging pile according to an embodiment of the present utility model.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application.

It should be noted that although functional power module division is performed in the device schematic and a logic sequence is shown in the flowchart, in some cases, the steps shown or described may be performed in a different order than the power module division in the device or the sequence in the flowchart. The terms first, second and the like in the description and in the claims and in the above-described figures, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing embodiments of the present application only and is not intended to be limiting of the present application.

Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of embodiments of the present application. One skilled in the relevant art will recognize, however, that the aspects of the application can be practiced without one or more of the specific details, or with other methods, components, devices, steps, etc. In other instances, well-known methods, devices, implementations, or operations are not shown or described in detail to avoid obscuring aspects of the application.

The block diagrams depicted in the figures are merely functional entities and do not necessarily correspond to physically separate entities. That is, these functional entities may be implemented in software, or in one or more hardware power modules or integrated circuits, or in different networks and/or processor devices and/or microcontroller devices.

The flow diagrams depicted in the figures are exemplary only, and do not necessarily include all of the elements and operations/steps, nor must they be performed in the order described. For example, some operations/steps may be decomposed, and some operations/steps may be combined or partially combined, so that the order of actual execution may be changed according to actual situations.

Along with the wider application of the charging equipment, the requirements of the high-power charging equipment and the flexible charging pile are continuously excavated. At present, more and more charging station operators adopt a scheme of charging piles for construction and operation, and the charging station has the advantages that: 1. the management is convenient; 2. the maintenance is convenient; 3. the operation cost is low; 4. high efficiency.

The charging pile product is mainly divided into a main cabinet and a terminal, wherein a three-phase input unit, a power module, a control unit, an output control matrix and the like are arranged in the main cabinet; and the terminal is mainly internally provided with a control unit and a charging gun.

CAN communication is adopted between the main cabinet and the terminal, which is a mainstream communication mode in the industry at present. The communication modes also include the following modes:

CAN bus communication: the method can realize the communication rate of 500kbps at the highest, and the signal transmission adopts a differential mode, so that the long-distance communication can be realized. The main disadvantage of this approach is the relatively low communication rate, requiring a dedicated shielded communication cable.

RS422 communication: the method can realize long-distance communication and full duplex communication. The disadvantage of this approach is the low communication rate, requiring two pairs of dedicated signal lines.

RS485 communication: the method can realize long-distance communication, but the communication rate is very low, and only half duplex communication is realized, and a special shielding communication cable is needed.

RS232 communication: the communication method can realize full duplex communication, and has the defects that the communication distance is short, when the distance between the charger and the electric automobile is long, the communication quality is possibly influenced, the communication rate is low, and a special shielding communication cable is needed.

Based on the comparison of the different communication modes, the communication modes between the main cabinet and the terminal mostly adopt CAN communication. However, there is still a problem that the communication rate is relatively low and the communication distance is limited.

The internal communication system of the charging pile and the charging pile provided by the embodiment of the utility model can overcome the problems of lower communication rate and limited communication distance by adopting a power line carrier communication mode.

As shown in fig. 1, fig. 1 is a schematic diagram of a communication system inside a charging pile according to an embodiment of the present utility model, where the charging pile includes a main cabinet and at least one terminal; the main cabinet is internally provided with a power supply end, a first control unit and a first carrier module, and the terminal is internally provided with a second control unit, a second carrier module and a charging gun;

the power supply end is respectively connected with the main cabinet and the terminal through power lines; two ends of the first carrier module are respectively connected with the first control unit and the power line; and two ends of the second carrier module are respectively connected with a power line and a second control unit, and the second control unit is also connected with a charging gun.

In the embodiment provided by the utility model, the communication problem between the main cabinet and the terminal is solved by adopting the power line carrier communication. The first control unit converts the information to be transmitted to the second control unit through the broadband carrier module, and normal communication between the main cabinet and the terminal is completed. Specifically, the first carrier module is used for modulating information data sent by the first control unit into a high-frequency signal, coupling the high-frequency signal to a power line for transmission, decoupling the high-frequency signal received by the power line, and sending the high-frequency signal to the first control unit; the second carrier module is used for modulating the information data sent by the second control unit into high-frequency signals, coupling the high-frequency signals to the power line for transmission, decoupling the high-frequency signals received by the power line and sending the high-frequency signals to the second control unit.

Power line carrier communication (Power Line Communication, PLC) is a communication scheme that uses a power line as a data transmission medium. The power line carrier communication means that information data of a transmitting end is modulated by a modem to form a high-frequency signal, a coupler of the transmitting end couples the high-frequency signal to a power line for transmission, a coupler of a receiving end decouples the signal from the power line, original data information is recovered by the modem of the receiving end, and then the original data information is transmitted to a receiving source to finish information transmission. From an operating frequency perspective, power line carrier communications can be divided into narrowband power line carriers (NB-PLC) and wideband power line carriers (BB-PLC). The domestic narrow-band carrier frequency range is 40-500 KHz, and the foreign range is 3-450 KHz. The frequency range of the domestic broadband carrier is 0.7-12 MHz, and the foreign frequency range is 1.6-30 MHz. The furthest propagation distance of the current broadband carrier module is 1km when the propagation speed is 250 Kbps. Far above the propagation distance of CAN communications.

In some embodiments, a first power module is further disposed in the main cabinet, two ends of the first power module are respectively connected with the power line and the first control unit, and the first power module is used for converting a power supply of the power end into a power supply adapted to the first control unit.

In some embodiments, a second power module is further disposed in the terminal, two ends of the second power module are respectively connected to the power line and the second control unit, and the second power module is used for converting a power supply of the power end into a power supply adapted to the second control unit.

In some embodiments, the first carrier module includes a first modem and a first coupler connected to each other, an input terminal of the first modem is connected to the first control unit, and an output terminal of the first coupler is connected to the power line.

In some embodiments, a circuit breaker is disposed in the main cabinet, and an input end of the circuit breaker is connected to the power supply end, and an output end of the circuit breaker is connected to the first power supply module and the second power supply module through power lines respectively.

In some embodiments, the second carrier module includes a second modem and a second coupler connected to each other, an input terminal of the second modem is connected to the second control unit, and an output terminal of the second coupler is connected to the power line.

In some embodiments, the second control unit and the charging gun are connected using CAN communication.

In some embodiments, the power supply is an alternating current, and the first power module is configured to convert the alternating current into a direct current voltage adapted to the first control unit.

In some exemplary embodiments, the power supply provided by the power supply terminal is 220Vac, and the first power module is configured to convert 220Vac into 12Vdc, where ACDC conversion is adopted by the first power module in this embodiment. The power end of the main cabinet provides single-phase electricity, the input voltage of the first power module is single-phase alternating current, and information transmission is achieved based on the alternating current provided by the power line.

In some embodiments, the power supply is a dc high voltage, and the first power module is configured to convert the dc high voltage into a dc voltage adapted to the first control unit.

In some exemplary embodiments, the power supply provided by the power supply end is 800Vdc, the first power module is used for converting 800Vdc into 12Vdc, the power supply end of the main cabinet provides direct current, the power line adopts a direct current bus, the input voltage of the first power module is high voltage direct current, and the embodiment realizes information propagation based on the direct current provided by the power line.

Since the period is 20ms and 16.7ms in the case of using 50HZ and 60HZ ac, two peaks occur in each ac period, and the two peaks bring about two pulse disturbances, i.e., a fixed 100HZ or 120HZ pulse disturbance on the power line, for about 2ms, the disturbance must be handled.

The charging pile power conversion section of the present embodiment has only DCDC conversion. The direct current bus input mode is adopted. Compared with the embodiment adopting AC-DC conversion, the first power module in the embodiment has the specification of 800Vdc to 12Vdc, the input voltage is high-voltage direct current, and the input line is derived from a main cabinet direct current bus. The innovation point of the embodiment is that the information is transmitted based on the direct current cable of the auxiliary power supply, and compared with the scheme adopting ACDC conversion, the scheme has the advantages of more stable signals and less pulse interference.

The embodiment of the utility model also provides a charging pile, which comprises the internal communication system of the charging pile in any embodiment.

It can be seen that the content in the above system embodiment is applicable to the present charging stack embodiment, and the specific functions of the present charging stack embodiment are the same as those of the above system embodiment, and the beneficial effects achieved by the present charging stack embodiment are the same as those achieved by the above system embodiment.

The terms "first," "second," "third," "fourth," and the like in the description of the present application and in the above-described figures, if any, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that embodiments of the present application described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

It should be understood that in this application, "at least one" means one or more, and "a plurality" means two or more. "and/or" for describing the association relationship of the association object, the representation may have three relationships, for example, "a and/or B" may represent: only a, only B and both a and B are present, wherein a, B may be singular or plural. The character "/" generally indicates that the context-dependent object is an "or" relationship. "at least one of" or the like means any combination of these items, including any combination of single item(s) or plural items(s). For example, at least one (one) of a, b or c may represent: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", wherein a, b, c may be single or plural.

Preferred embodiments of the present application are described above with reference to the accompanying drawings, and thus do not limit the scope of the claims of the embodiments of the present application. Any modifications, equivalent substitutions and improvements made by those skilled in the art without departing from the scope and spirit of the embodiments of the present application shall fall within the scope of the claims of the embodiments of the present application.

Claims

1. A charging stack intercom system, wherein said charging stack comprises a main cabinet and at least one terminal; the main cabinet is internally provided with a power supply end, a first control unit and a first carrier module, and the terminal is internally provided with a second control unit, a second carrier module and a charging gun;

2. The system of claim 1, wherein a first power module is further disposed in the main cabinet, two ends of the first power module are respectively connected to the power line and the first control unit, and the first power module is configured to convert a power supply of the power supply end into a power supply adapted to the first control unit.

3. The system according to claim 2, wherein a second power module is further disposed in the terminal, two ends of the second power module are respectively connected to the power line and the second control unit, and the second power module is configured to convert a power supply of the power supply end into a power supply adapted to the second control unit.

4. The system of claim 1, wherein the first carrier module comprises a first modem and a first coupler connected to each other, an input of the first modem being connected to the first control unit, an output of the first coupler being connected to the power line.

5. A system according to claim 3, wherein a circuit breaker is provided in the main cabinet, and an input end of the circuit breaker is connected to the power supply end, and an output end of the circuit breaker is connected to the first power supply module and the second power supply module respectively through power lines.

6. The system of claim 1, wherein the second carrier module comprises a second modem and a second coupler connected to each other, an input of the second modem being connected to the second control unit, an output of the second coupler being connected to the power line.

7. The system of claim 1, wherein the second control unit and the charging gun are in a CAN communication connection.

8. The system according to claim 2, wherein the power supply is an alternating current, and the first power module is configured to convert the alternating current into a direct current voltage adapted to the first control unit.

9. A system according to claim 3, wherein the power supply is a dc high voltage power supply, and the first power module is configured to convert the dc high voltage power supply into a dc voltage adapted to the first control unit.

10. A charging stack comprising the charging stack intercom system of any of claims 1 to 9.