阅读说明：本技术 一种用于车载充电的并联模块通信系统 (Parallel module communication system for vehicle-mounted charging ) 是由 罗雪肖 沈杰 于 2019-01-15 设计创作，主要内容包括：本发明公开了一种用于车载充电的并联模块通信系统,该系统包括：通过电力线依次连接的电源、多个用于车载充电系统中的模块,以及负载。其中,多个用于车载充电系统中的模块通过电力线以并联的方式电连接。本发明提供的并联模块通信系统,通过设置电源、多个用于车载充电系统中的模块,以及负载,并使三者通过电力线电连接,使各模块之间的通信信号加载在电力线上,通过电力线进行传输,省去了额外的通信线,使各模块之间的连接更加简洁,且电力线的通信速率较高。(The invention discloses a parallel module communication system for vehicle charging, which comprises: the vehicle-mounted charging system comprises a power supply, a plurality of modules used in the vehicle-mounted charging system and a load which are sequentially connected through a power line. Wherein a plurality of modules used in the vehicle-mounted charging system are electrically connected in parallel by power lines. According to the parallel module communication system provided by the invention, the power supply, the plurality of modules used in the vehicle-mounted charging system and the load are arranged and are electrically connected through the power line, so that communication signals among the modules are loaded on the power line and transmitted through the power line, an additional communication line is omitted, the connection among the modules is simpler, and the communication rate of the power line is higher.)

1. A parallel module communication system for vehicle charging, comprising: a power supply (1), a plurality of modules (2) used in the vehicle-mounted charging system, and a load (3) which are connected in sequence through a power line;

the modules (2) are electrically connected in parallel by power lines, and communication signals between the modules (2) are transmitted by the parallel power lines.

2. A parallel module communication system according to claim 1, wherein the power supply (1) is a single phase power supply.

3. Parallel module communication system according to claim 2, characterized in that the power line to which the module (2) is connected is an ac power line.

4. A parallel modular communication system according to claim 1, characterized in that the power supply (1) is a three-phase four-wire system power supply.

5. Parallel module communication system according to claim 4, characterized in that the power line to which the module (2) is connected is a direct current power line.

6. Parallel module communication system according to claim 1, wherein the module (2) for use in an onboard charging system comprises: a control section and a power section;

the power part is connected with the power supply (1) and the load (3);

the control part comprises a P L C chip (201) and a digital processing chip (202) which are connected with the power part;

the digital processing chip (202) is used for transmitting and receiving digital processing signals;

and the P L C chip (201) is used for modulating and demodulating the digital processing signal.

7. A parallel module communication system according to claim 1, wherein the load (3) is a battery.

Technical Field

The invention relates to the field of communication, in particular to a parallel module communication system for vehicle-mounted charging.

Background

With the development of vehicle-mounted charging technology and electric vehicles, the vehicle-mounted charging technology of electric vehicles has also been widely developed and applied, and in the vehicle-mounted charging technology of electric vehicles, the parallel module communication is mainly used for realizing handshake check and information exchange among modules in a parallel system.

At present, communication modes of parallel modules mainly adopted in the prior art are Controller Area Network (CAN) communication and RS485 communication, but communication rates of the CAN communication and the RS485 communication are low, communication lines are required to be used in application processes of the CAN communication and the RS485 communication, and therefore connection between modules in a parallel module system is complex.

Disclosure of Invention

The embodiment of the invention provides a parallel module communication system for vehicle-mounted charging, which is used for improving the communication speed and simplifying the connection among modules, and comprises the following components:

the system comprises a power supply, a plurality of modules used in a vehicle-mounted charging system and a load which are sequentially connected through a power line;

the plurality of modules are electrically connected in parallel through a power line, and communication signals between the plurality of modules are transmitted through the parallel power line.

In one possible design, the power source is a single phase power source.

In one possible design, the power line to which the module is connected is an ac power line.

In one possible design, the power supply is a three-phase four-wire power supply.

In one possible design, the power line to which the module is connected is a dc power line.

In one possible design, the module for use in the vehicle charging system includes: a control section and a power section;

the power part is connected with the power supply and the load;

the control part comprises a P L C chip and a digital processing chip which are connected with the power part;

the digital processing chip is used for transmitting and receiving digital processing signals;

and the P L C chip is used for modulating and demodulating the digital processing signal.

In one possible embodiment, the load is a battery.

According to the parallel module communication system provided by the embodiment of the invention, the power supply, the plurality of modules used in the vehicle-mounted charging system and the load are arranged and are electrically connected through the power line, so that communication signals among the modules are loaded on the power line and transmitted through the power line, an additional communication line is omitted, the connection among the modules is simpler, the communication rate of the power line is higher, and the operation efficiency can be improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts. In the drawings:

fig. 1 is a schematic structural diagram of a parallel module communication system according to an embodiment of the present invention, when the power supply is a single-phase power supply;

fig. 2 is a schematic structural diagram of a parallel module communication system according to an embodiment of the present invention, when a power supply is a three-phase four-wire system power supply;

fig. 3 is a schematic structural diagram of a parallel module communication system according to an embodiment of the present invention, when a power line is an ac power line;

fig. 4 is a schematic structural diagram of a parallel module communication system according to an embodiment of the present invention, when a power line is a dc power line.

The reference numbers are as follows:

1 a power supply, and a power supply,

2, the module is divided into a plurality of modules,

a 201P L C chip, wherein,

202 a digital processing chip for processing digital data,

3, load.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the embodiments of the present invention are further described in detail below with reference to the accompanying drawings. The exemplary embodiments and descriptions of the present invention are provided to explain the present invention, but not to limit the present invention.

An embodiment of the present invention provides a parallel module communication system for vehicle charging, as shown in fig. 1 and fig. 2, the system includes: the system comprises a power supply 1, a plurality of modules 2 used in the vehicle-mounted charging system and a load 3 which are sequentially connected through a power line. Wherein the plurality of modules 2 are electrically connected in parallel through power lines, and communication signals between the plurality of modules 2 are transmitted through the parallel power lines.

According to the parallel module communication system provided by the embodiment of the invention, the power supply 1, the plurality of modules 2 used in the vehicle-mounted charging system and the load 3 are arranged and connected through the power line, so that communication signals among the modules 2 are loaded on the power line and transmitted through the power line, an additional communication line is omitted, the connection among the modules 2 is simpler, the communication rate of the power line is higher, and the operation efficiency can be improved.

Specifically, the power supply 1 may be various, for example, it may be a single-phase power supply, and in this case, the power line connected in parallel at the input side of the module 2 is an ac power line; the input port of the module 2 is connected to a single-phase power supply. Wherein, alternating current power line refers to: transmitting current through the power line is alternating current.

The power supply 1 may be a three-phase four-wire system power supply, and in this case, the power line connected in parallel to the output side of the module 2 is a dc power line. The direct current power line means: the current transmitted through the power line is direct current.

In the working process, the plurality of parallel modules 2 are communicated with each other at every moment.

In the embodiment of the invention, in order to quickly realize communication between the modules 2, as shown in fig. 3 and fig. 4, the module 2 used in the vehicle-mounted charging system comprises a control part and a power part, wherein the power part is connected with a power supply 1 and a load 3, the control part comprises a P L C chip 201 and a digital processing chip 202, the P L C chip 201 is connected with the power part, the digital processing chip 202 is used for transmitting and receiving digital processing signals, and the P L C chip 201 is used for modulating and demodulating the digital processing signals.

Specifically, during the communication operation, the digital processing chip 202 outputs a transmission signal, the transmission signal is modulated into an ac high-frequency signal by the P L C chip 201, the modulated ac high-frequency signal is loaded onto the power line through a transformer, the signal is transmitted to two ends of another module 2 transformer through the connected power line, the signal is coupled and input to the P L C chip inside the module 2 through the another module 2 transformer, the high-frequency ac signal is demodulated by the P L C chip, and a reception signal is output to the digital processing chip inside the module 2, thereby completing the data communication between the two modules 2.

The P L C chip 201 may be an ST7538Q chip manufactured and sold by ST corporation of ideological Semiconductors (ST) the digital processing chip 202 functions to digitally process communication signals, which may be understood as a digital signal processor.

In the embodiment of the present invention, the load 3 may be a storage battery to ensure smooth vehicle charging operation. Specifically, the storage battery is a storage battery in a battery system of an electric automobile.

In the embodiment of the invention, the communication rate of the power line communication mode CAN reach more than 2Mbit/s, the CAN communication rate is generally about 1Mbit/s, the control of the parallel module system needs a high-rate communication mode, the maximum efficiency tracking is particularly realized, the power line communication mode CAN meet the requirement, the high communication rate CAN enable the parallel control to be more optimized and flexible, and the dynamic performance of realizing the maximum efficiency tracking is greatly improved. In addition, because the power line communication mode is to load the communication signal on the power line and transmit the communication signal through the power line, an additional communication line is omitted, and the connection between the modules in the parallel module system is simpler.

The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.