CN114495362A - A DC charging pile - Google Patents

Abstract

The utility model provides a direct current fills electric pile, belongs to and fills the electric pile field, is to the electric pile that fills in remote area, because of not covered unable completion data transmission by cell-phone signal, if laid the too high problem of line or wireless network cost as required. The first type of direct current charging pile is used for transmitting own data and other charging pile data to a distribution room metering center through a network cable. And the second type of direct current charging pile is used for transmitting own data and other charging pile data to the transformer area metering center through the 4G module. And the third type direct current charging pile is used for transmitting the charging data of the charging pile and other charging piles to the first type direct current charging pile and the second type direct current charging pile through the LoRa module, and then transmitting the charging data to the distribution room metering center through the first type direct current charging pile and the second type direct current charging pile. The follow-up operation cost of the direct current charging pile is reduced in an ad hoc network mode, the problem that whether mobile phone signals are stable or not is not considered, and the direct current charging pile is not limited by a mobile phone network.

Description

Translated fromChinese

一种直流充电桩A DC charging pile

技术领域technical field

本发明涉及充电桩领域，特别是涉及一种直流充电桩。The invention relates to the field of charging piles, in particular to a DC charging pile.

背景技术Background technique

随着电动汽车的广泛使用，早期电动汽车的充电桩均为充电速度慢的交流充电桩，目前在建的充电桩均为充电速度快的直流充电桩。With the widespread use of electric vehicles, the charging piles of early electric vehicles are all AC charging piles with slow charging speed, and the charging piles currently under construction are all DC charging piles with fast charging speed.

目前，无论在交流充电桩还是直流充电桩上，通信模块均为有线传输或者利用4G手机网络传输充电桩工作状态和用电信息。At present, whether on the AC charging pile or the DC charging pile, the communication module is wired transmission or uses the 4G mobile phone network to transmit the working status and power consumption information of the charging pile.

现有技术存在的缺点：Disadvantages of the existing technology:

近几年国家大力倡导乡村电气化，则必须先完善乡村用电，其中就包括电动汽车直流充电桩的提前布局。我国有4万个乡镇，58万个行政村，260万个自然村落。In recent years, the country has vigorously advocated rural electrification, and it is necessary to improve rural electricity consumption first, including the advance layout of DC charging piles for electric vehicles. my country has 40,000 townships, 580,000 administrative villages, and 2.6 million natural villages.

缺点1：无论是在乡村地广人稀地区布局直流充电桩，还是在群山林立的山寨地区，都存在有线通信网络施工难度大、建设投入成本非常高的问题；如果直流充电桩采用手机网络完成无线通信，手机信号是否能覆盖到这些地区，即使能够覆盖该地区手机信号是否稳定，是否能够支持无线数据可靠传输这些问题还有待考察；Disadvantage 1: Whether it is to deploy DC charging piles in rural areas with vast land and sparsely populated areas, or in mountain villages, the construction of wired communication networks is difficult and the cost of construction investment is very high; if the DC charging piles use mobile phone networks After completing wireless communication, whether the mobile phone signal can cover these areas, even if it can cover the area, whether the mobile phone signal is stable, and whether it can support the reliable transmission of wireless data remains to be investigated;

缺点2：如果在地广人稀、群山林立的山区建设直流充电桩，如果采用手机网络进行数据传输，即使手机信号能够覆盖直流充电桩所在区域，但由于使用手机4G网络必须购买数据无线通信的流量卡，因此采用这个解决方案的直流充电桩运营成本会很高。Disadvantage 2: If a DC charging pile is built in a mountainous area with vast land and sparsely populated mountains, if the mobile phone network is used for data transmission, even if the mobile phone signal can cover the area where the DC charging pile is located, the data wireless communication must be purchased due to the use of themobile phone 4G network. Therefore, the operating cost of DC charging piles using this solution will be very high.

发明内容SUMMARY OF THE INVENTION

为了克服上述现有技术存在的缺陷，本发明提供了一种直流充电桩，可以解决偏远地区，因不被手机信号覆盖无法完成数据传输，如果按需铺设有线或无线网络成本过高的问题。In order to overcome the above-mentioned defects of the prior art, the present invention provides a DC charging pile, which can solve the problem that data transmission cannot be completed in remote areas because it is not covered by mobile phone signals, and the cost of laying wired or wireless networks on demand is too high.

本发明采用的技术方案在于：The technical scheme adopted in the present invention is:

一种直流充电桩，包括：第一类直流充电桩、第二类直流充电桩和第三类直流充电桩；A DC charging pile, comprising: a first type of DC charging pile, a second type of DC charging pile and a third type of DC charging pile;

所述第一类直流充电桩，用于将自己的和其他充电桩的数据通过网线传给台区计量中心；The first type of DC charging pile is used to transmit the data of its own and other charging piles to the metering center of the station area through the network cable;

所述第二类直流充电桩，用于将自己的和其他充电桩的数据通过4G模块传给台区计量中心；The second type of DC charging pile is used to transmit the data of its own and other charging piles to the metering center of the station area through the 4G module;

所述第三类直流充电桩，用于将自己的和其他充电桩的充电数据通过第三类LoRa模块传给第一类直流充电桩和第二类直流充电桩，然后由第一类直流充电桩和第二类直流充电桩传给台区计量中心。The third type of DC charging pile is used to transmit the charging data of its own and other charging piles to the first type of DC charging pile and the second type of DC charging pile through the third type of LoRa module, and then charged by the first type of DC charging pile. The piles and the second type of DC charging piles are transmitted to the metering center of the Taiwan area.

进一步地，所述第一类直流充电桩，包括第一类LoRa模块、第一类充电桩控制器，所述第一类LoRa模块包括第一类LoRa功能芯片和第一类LoRa模块控制器；Further, the first type of DC charging pile includes a first type of LoRa module and a first type of charging pile controller, and the first type of LoRa module includes a first type of LoRa function chip and a first type of LoRa module controller;

所述第一类LoRa功能芯片与第一类LoRa模块控制器的SPI接口连接，所述第一类LoRa模块控制器与第一类充电桩控制器的SPI接口连接，第一类充电桩控制器的网口与台区计量中心连接，第一类LoRa模块通过LPWAN协议与其他LoRa模块连接；The first type of LoRa function chip is connected to the SPI interface of the first type of LoRa module controller, the first type of LoRa module controller is connected to the SPI interface of the first type of charging pile controller, and the first type of charging pile controller The network port is connected to the metering center of the station area, and the first type of LoRa module is connected to other LoRa modules through the LPWAN protocol;

所述第一类LoRa模块，用于完成无线组网，配合其他充电桩收发充电数据；The first type of LoRa module is used to complete wireless networking and cooperate with other charging piles to send and receive charging data;

所述第一类LoRa功能芯片，用于控制系统进行LoRa协议的无线传输；The first type of LoRa function chip is used to control the system to perform wireless transmission of the LoRa protocol;

所述第一类LoRa模块控制器，用于决策在什么情况收其他充电桩充电数据，在什么情况发送包括自己的充电数据；The first type of LoRa module controller is used to decide when to receive charging data from other charging piles, and when to send its own charging data;

所述第一类充电桩控制器，用于与第一类LoRa模块传递充电桩的数据。The first type of charging pile controller is used to transmit the data of the charging pile with the first type of LoRa module.

进一步地，所述第二类直流充电桩，包括第二类LoRa模块、第二类充电桩控制器和4G模块，所述第二类LoRa模块包括第二类LoRa功能芯片和第二类LoRa模块控制器；Further, the second type of DC charging pile includes a second type of LoRa module, a second type of charging pile controller and a 4G module, and the second type of LoRa module includes a second type of LoRa function chip and a second type of LoRa module controller;

所述第二类LoRa功能芯片与第二类LoRa模块控制器的SPI接口连接，所述第二类LoRa模块控制器与第二类充电桩控制器的SPI接口连接，第二类充电桩控制器的UART接口与4G模块连接，通过4G模块与台区计量中心连接，第二类LoRa模块通过LPWAN协议与其他LoRa模块连接；The second type of LoRa function chip is connected with the SPI interface of the second type of LoRa module controller, the second type of LoRa module controller is connected with the SPI interface of the second type of charging pile controller, and the second type of charging pile controller The UART interface is connected to the 4G module, and the metering center of the station area is connected through the 4G module. The second type of LoRa module is connected to other LoRa modules through the LPWAN protocol;

所述第二类LoRa模块，用于完成无线组网，配合其他充电桩收发充电数据；The second type of LoRa module is used to complete wireless networking and cooperate with other charging piles to send and receive charging data;

所述第二类LoRa功能芯片，用于控制系统进行LoRa协议的无线传输；The second type of LoRa function chip is used to control the system to perform wireless transmission of the LoRa protocol;

所述第二类LoRa模块控制器，用于决策在什么情况收其他充电桩充电数据，在什么情况发送包括自己的充电数据；The second type of LoRa module controller is used to decide when to receive charging data from other charging piles, and when to send its own charging data;

所述第二类充电桩控制器，用于与第二类LoRa模块传递充电桩的数据；The second type of charging pile controller is used to transmit the data of the charging pile with the second type of LoRa module;

所述4G模块，用于将数据传输至台区计量中心。The 4G module is used to transmit data to the metering center of the station area.

进一步地，所述第三类直流充电桩，包括第三类LoRa模块、第三类充电桩控制器，所述第三类LoRa模块包括第三类LoRa功能芯片和第三类LoRa模块控制器；Further, the third type of DC charging pile includes a third type of LoRa module and a third type of charging pile controller, and the third type of LoRa module includes a third type of LoRa function chip and a third type of LoRa module controller;

所述第三类LoRa功能芯片与第三类LoRa模块控制器的SPI接口连接，所述第三类LoRa模块控制器与第三类充电桩控制器的SPI接口连接，第三类LoRa模块通过LPWAN协议与其他LoRa模块连接；The third type of LoRa function chip is connected with the SPI interface of the third type of LoRa module controller, the third type of LoRa module controller is connected with the SPI interface of the third type of charging pile controller, and the third type of LoRa module is connected through the LPWAN The protocol is connected with other LoRa modules;

所述第三类LoRa模块，用于完成无线组网，配合其他充电桩收发充电数据；The third type of LoRa module is used to complete wireless networking and cooperate with other charging piles to send and receive charging data;

所述第三类LoRa功能芯片，用于控制系统进行LoRa协议的无线传输；The third type of LoRa function chip is used to control the system to perform wireless transmission of the LoRa protocol;

所述第三类LoRa模块控制器，用于决策在什么情况收其他充电桩充电数据，在什么情况发送包括自己的充电数据；The third type of LoRa module controller is used to decide when to receive charging data from other charging piles, and when to send its own charging data;

所述第三类充电桩控制器，用于与第三类LoRa模块传递充电桩的数据。The third type of charging pile controller is used to transmit the data of the charging pile with the third type of LoRa module.

一种直流充电桩实施方法，所述第一类直流充电桩、第二类直流充电桩的LoRa模块控制器实施步骤如下：A method for implementing a DC charging pile. The steps for implementing the LoRa module controller of the first type of DC charging pile and the second type of DC charging pile are as follows:

步骤S1，无线接收数据时首先使用http协议接收数据，当需要加密数据时采用https应用层协议接收数据；Step S1, when wirelessly receiving data, firstly use http protocol to receive data, and use https application layer protocol to receive data when encrypted data is required;

步骤S2，在数据中提取由充电桩控制器提供的充电桩编号，确定接收到数据的来源；Step S2, extracting the charging pile number provided by the charging pile controller from the data to determine the source of the received data;

步骤S3，按照台区计量中心的数据要求，将移动网络没有覆盖区域中的直流充电桩数据发送给台区计量中心。Step S3, according to the data requirements of the metering center in the station area, send the data of the DC charging piles in the area not covered by the mobile network to the metering center in the station area.

本发明的有益效果是：The beneficial effects of the present invention are:

1、适合在乡村地域广袤但是基础设施不是很健全的地区应用，降低了施工难度。1. It is suitable for application in the vast rural area but the infrastructure is not very sound, which reduces the difficulty of construction.

2、通过自组网的方式降低了直流充电桩后续运营成本，也不再用考虑手机信号是否稳定的问题，使直流充电桩的使用不受手机网络限制。2. The follow-up operation cost of the DC charging pile is reduced through the self-organized network, and it is no longer necessary to consider the stability of the mobile phone signal, so that the use of the DC charging pile is not restricted by the mobile phone network.

附图说明Description of drawings

图1是一种直流充电桩的工作示意图；Fig. 1 is a working schematic diagram of a DC charging pile;

图2是一种直流充电桩的第一类直流充电桩结构框图；Fig. 2 is a structural block diagram of the first type of DC charging pile of a DC charging pile;

图3是一种直流充电桩的第二类直流充电桩结构框图；FIG. 3 is a structural block diagram of a second type of DC charging pile of a DC charging pile;

图4是一种直流充电桩的第三类直流充电桩结构框图；FIG. 4 is a structural block diagram of a third type of DC charging pile of a DC charging pile;

具体实施方式Detailed ways

一种直流充电桩，包括第一类直流充电桩、第二类直流充电桩和第三类直流充电桩。A DC charging pile includes a first type of DC charging pile, a second type of DC charging pile and a third type of DC charging pile.

如图2所示，第一类直流充电桩，包括第一类LoRa模块、第一类充电桩控制器。所述第一类LoRa模块包括第一类LoRa功能芯片和第一类LoRa模块控制器。所述第一类直流充电桩，用于将自己的和其他充电桩的数据通过网线传给台区计量中心。As shown in Figure 2, the first type of DC charging pile includes the first type of LoRa module and the first type of charging pile controller. The first type of LoRa module includes a first type of LoRa function chip and a first type of LoRa module controller. The first type of DC charging pile is used to transmit the data of its own and other charging piles to the metering center of the station area through the network cable.

所述台区计量中心指的是地区供电公司的服务器管理中心，运行相关管理系统，记录信息处理信息等。The metering center in the station area refers to the server management center of the regional power supply company, which operates related management systems, records information processing information, and the like.

所述第一类LoRa功能芯片与第一类LoRa模块控制器的SPI接口连接，所述第一类LoRa模块控制器与第一类充电桩控制器的SPI接口连接，第一类充电桩控制器的网口与台区计量中心连接，第一类LoRa模块通过LPWAN协议与其他LoRa模块连接；The first type of LoRa function chip is connected to the SPI interface of the first type of LoRa module controller, the first type of LoRa module controller is connected to the SPI interface of the first type of charging pile controller, and the first type of charging pile controller The network port is connected to the metering center of the station area, and the first type of LoRa module is connected to other LoRa modules through the LPWAN protocol;

所述第一类LoRa模块，用于完成无线组网，配合其他充电桩收发充电数据；The first type of LoRa module is used to complete wireless networking and cooperate with other charging piles to send and receive charging data;

所述第一类LoRa功能芯片，用于控制系统进行LoRa协议的无线传输；The first type of LoRa function chip is used to control the system to perform wireless transmission of the LoRa protocol;

所述第一类LoRa模块控制器，用于决策在什么情况收其他充电桩充电数据，在什么情况发送包括自己的充电数据；The first type of LoRa module controller is used to decide when to receive charging data from other charging piles, and when to send its own charging data;

所述第一类充电桩控制器，用于与第一类LoRa模块传递充电桩的数据。The first type of charging pile controller is used to transmit the data of the charging pile with the first type of LoRa module.

如图3所示，第二类直流充电桩，包括第二类LoRa模块、第二类充电桩控制器和4G模块。所述第二类LoRa模块包括第二类LoRa功能芯片和第二类LoRa模块控制器。所述第二类直流充电桩，用于将自己的和其他充电桩的数据通过4G模块传给台区计量中心。As shown in Figure 3, the second type of DC charging pile includes the second type of LoRa module, the second type of charging pile controller and the 4G module. The second-type LoRa module includes a second-type LoRa function chip and a second-type LoRa module controller. The second type of DC charging pile is used to transmit the data of its own and other charging piles to the metering center of the station area through the 4G module.

所述第二类LoRa功能芯片与第二类LoRa模块控制器的SPI接口连接，所述第二类LoRa模块控制器与第二类充电桩控制器的SPI接口连接，第二类充电桩控制器的UART接口与4G模块连接，通过4G模块与台区计量中心连接，第二类LoRa模块通过LPWAN协议与其他LoRa模块连接；The second type of LoRa function chip is connected with the SPI interface of the second type of LoRa module controller, the second type of LoRa module controller is connected with the SPI interface of the second type of charging pile controller, and the second type of charging pile controller The UART interface is connected to the 4G module, and the metering center of the station area is connected through the 4G module. The second type of LoRa module is connected to other LoRa modules through the LPWAN protocol;

所述第二类LoRa模块，用于完成无线组网，配合其他充电桩收发充电数据；The second type of LoRa module is used to complete wireless networking and cooperate with other charging piles to send and receive charging data;

所述第二类LoRa功能芯片，用于控制系统进行LoRa协议的无线传输；The second type of LoRa function chip is used to control the system to perform wireless transmission of the LoRa protocol;

所述第二类LoRa模块控制器，用于决策在什么情况收其他充电桩充电数据，在什么情况发送包括自己的充电数据；The second type of LoRa module controller is used to decide when to receive charging data from other charging piles, and when to send its own charging data;

所述第二类充电桩控制器，用于与第二类LoRa模块传递充电桩的数据；The second type of charging pile controller is used to transmit the data of the charging pile with the second type of LoRa module;

所述4G模块，用于将数据传输至台区计量中心。The 4G module is used to transmit data to the metering center of the station area.

如图4所示，第三类直流充电桩，包括第三类LoRa模块、第三类充电桩控制器。所述第三类LoRa模块包括第三类LoRa功能芯片和第三类LoRa模块控制器。所述第三类直流充电桩，用于将自己的和其他充电桩的充电数据通过第三类LoRa模块传给第一类直流充电桩和第二类直流充电桩，然后由第一类直流充电桩和第二类直流充电桩传给台区计量中心。As shown in Figure 4, the third type of DC charging pile includes the third type of LoRa module and the third type of charging pile controller. The third type of LoRa module includes the third type of LoRa function chip and the third type of LoRa module controller. The third type of DC charging pile is used to transmit the charging data of its own and other charging piles to the first type of DC charging pile and the second type of DC charging pile through the third type of LoRa module, and then charged by the first type of DC charging pile. The piles and the second type of DC charging piles are transmitted to the metering center of the Taiwan area.

所述第三类LoRa功能芯片与第三类LoRa模块控制器的SPI接口连接，所述第三类LoRa模块控制器与第三类充电桩控制器的SPI接口连接，第三类LoRa模块通过LPWAN协议与其他LoRa模块连接；The third type of LoRa function chip is connected with the SPI interface of the third type of LoRa module controller, the third type of LoRa module controller is connected with the SPI interface of the third type of charging pile controller, and the third type of LoRa module is connected through the LPWAN The protocol is connected with other LoRa modules;

所述第三类LoRa模块，用于完成无线组网，配合其他充电桩收发充电数据；The third type of LoRa module is used to complete wireless networking and cooperate with other charging piles to send and receive charging data;

所述第三类LoRa功能芯片，用于控制系统进行LoRa协议的无线传输；The third type of LoRa function chip is used to control the system to perform wireless transmission of the LoRa protocol;

所述第三类LoRa模块控制器，用于决策在什么情况收其他充电桩充电数据，在什么情况发送包括自己的充电数据；The third type of LoRa module controller is used to decide when to receive charging data from other charging piles, and when to send its own charging data;

所述第三类充电桩控制器，用于与第三类LoRa模块传递充电桩的数据。The third type of charging pile controller is used to transmit the data of the charging pile with the third type of LoRa module.

一种直流充电桩实施方法，所述第一类直流充电桩、第二类直流充电桩的LoRa模块控制器实施步骤如下：A method for implementing a DC charging pile. The steps for implementing the LoRa module controller of the first type of DC charging pile and the second type of DC charging pile are as follows:

步骤S1，无线接收数据时首先使用http协议接收数据，当需要加密数据时采用https应用层协议接收数据；Step S1, when wirelessly receiving data, firstly use http protocol to receive data, and use https application layer protocol to receive data when encrypted data is required;

步骤S2，在数据中提取由充电桩控制器提供的充电桩编号，确定接收到数据的来源；Step S2, extracting the charging pile number provided by the charging pile controller from the data to determine the source of the received data;

步骤S3，按照台区计量中心的数据要求，将移动网络没有覆盖区域中的直流充电桩数据发送给台区计量中心。Step S3, according to the data requirements of the metering center in the station area, send the data of the DC charging piles in the area not covered by the mobile network to the metering center in the station area.

如图1所示，充电桩的计费数据最终还是要上传到国网的台区计量中心，因此还是需要将自组网区域内的充电桩数据上传到距离自组网区域最近的台区计量中心，为了完成在自组网区域内进行无成本的数据交互，以及将自组网区域内直流充电桩最终传到国网计量中心，本发明将直流充电桩分为三类：As shown in Figure 1, the charging data of charging piles will eventually be uploaded to the station area metering center of the State Grid, so it is still necessary to upload the charging pile data in the ad hoc network area to the station area closest to the ad hoc network area. In order to complete the cost-free data exchange in the ad hoc network area and finally transmit the DC charging piles in the ad hoc network area to the State Grid Metering Center, the present invention divides the DC charging piles into three categories:

第一类直流充电桩，处于人口密集乡村地区的直流充电桩，采用有线传输的方式进行数据传输；将第一类直流充电桩置于所在位置与台区计量中心之间铺设有有线网络的区域，可以理解与距离无关，其中有有线网络就不用无线网络，确保数据发送可靠性。作用除了为电动汽车充电、计费外，还作为汇总自组网区域内所有直流充电桩数据的集中器，并将汇总的数据通过有线网络发送给台区计量中心。The first type of DC charging pile, which is located in densely populated rural areas, uses wired transmission for data transmission; the first type of DC charging pile is placed in the area where the wired network is laid between the location and the metering center of the station area. , it can be understood that it has nothing to do with the distance. If there is a wired network, there is no need for a wireless network to ensure the reliability of data transmission. In addition to charging and billing electric vehicles, it also acts as a concentrator that aggregates data from all DC charging piles in the ad hoc network area, and sends the aggregated data to the metering center in the Taiwan area through the wired network.

第二类直流充电桩，距离人员密集地区没有铺设有线网络地区，且处于手机信号覆盖范围边缘，信号强度能够保证无线数据稳定传输地区的直流充电桩，采用手机4G网络和有线传输共存的数据通信方式(优先选择无线网络与台区计量中心通信)，将第二类直流充电桩置于手机网络能覆盖的自组网区域边缘，作用是除了为电动汽车充电、计费外，还作为汇总自组网区域内所有直流充电桩数据的集中器，并将汇总的数据通过手机无线网络发送给台区计量中心。The second type of DC charging piles are located in areas where there is no wired network in densely populated areas, and are located at the edge of mobile phone signal coverage. DC charging piles in areas where the signal strength can ensure stable wireless data transmission, usingmobile phone 4G network and wired transmission coexist data communication Mode (preferably choose wireless network to communicate with the metering center of the station area), place the second type of DC charging pile on the edge of the ad hoc network area that can be covered by the mobile phone network. The data concentrator of all DC charging piles in the networking area, and sends the aggregated data to the metering center of the station area through the mobile phone wireless network.

第三类直流充电桩，完全处于地广人稀、群山林立且没有铺设有线网络，手机信号不能覆盖或者即使覆盖数据传输也不稳定地区的直流充电桩，仅采用LPWAN技术进行数据传输。其中，具体使用的是LoRa通信技术。第三类直流充电桩按电动汽车充电需求置于手机网络不能覆盖，利用LPWAN技术自组网的区域，作用除了为电动汽车充电、计费外，还通过每个直流充电桩上带的LPWAN模块，通过无线自组网网络将此区域内的所有充电桩数据传输到第一或者第二类充电桩，最终由第一第二类充电桩将计量数据传给台区计量中心。第三类充电桩之间的关系是互为数据中继的关系。The third type of DC charging piles are completely located in areas with sparsely populated areas, numerous mountains and no wired network, and the DC charging piles in areas where the mobile phone signal cannot be covered or the data transmission is unstable even if covered, only use LPWAN technology for data transmission. Among them, the LoRa communication technology is specifically used. The third type of DC charging pile is placed in the area that cannot be covered by the mobile phone network according to the charging requirements of electric vehicles. The use of LPWAN technology is used to form an ad hoc network. In addition to charging and billing for electric vehicles, it also uses the LPWAN module on each DC charging pile. , transmit the data of all charging piles in this area to the first or second type of charging piles through the wireless ad hoc network network, and finally the first and second type of charging piles will transmit the metering data to the metering center of the station area. The relationship between the third type of charging piles is that of mutual data relays.

第一类直流充电桩，直接将数据通过有线网络和监控中心进行交互。The first type of DC charging pile directly interacts with the monitoring center through the wired network.

第二类直流充电桩，起到数据集中器的作用，直流充电桩上第二类LoRa模块负责接收第三类直流充电桩数据上传至局域网的数据；第二类直流充电桩上的4G模块负责传输其所在直流充电桩需要传输的数据，同时负责将接收到的局域网中各第三类充电桩的数据传送给监控中心。The second type of DC charging pile acts as a data concentrator. The second type of LoRa module on the DC charging pile is responsible for receiving the data uploaded to the local area network by the third type of DC charging pile; the 4G module on the second type of DC charging pile is responsible for It transmits the data that the DC charging pile where it is located needs to transmit, and is also responsible for transmitting the received data of the third-type charging piles in the local area network to the monitoring center.

第一类直流充电桩、第二类直流充电桩第一类、第二类LoRa模块控制器无线接收数据的时候首先用http协议接收数据，之后在数据中提取充电桩编号，充电桩编号由充电桩控制器提供；，确定接收到数据的来源，最后按照台区计量中心的数据要求，将移动网络没有覆盖区域中的直流充电桩数据发送给台区计量中心。The first type of DC charging pile, the second type of DC charging pile, the first type, and the second type of LoRa module controller wirelessly receive data using the http protocol to receive the data, and then extract the charging pile number from the data, and the charging pile number is determined by the charging pile. The pile controller provides; to determine the source of the received data, and finally, according to the data requirements of the station area metering center, send the DC charging pile data in the area not covered by the mobile network to the station area metering center.

如果需要数据加密采用https这个应用层协议，采用共享密钥加密和公开密钥加密方式，保密性更好，但是占用数据传输带宽，会导致数据传输速度和数据传输量降低。If data encryption is required, the application layer protocol https is used, and the shared key encryption and public key encryption methods are used, which has better confidentiality, but occupies the data transmission bandwidth, which will reduce the data transmission speed and data transmission volume.

第三类直流充电桩，为了组成低成本的局域网，需要无线信号中继器，起到加强LPWAN无线传输信号强度，延伸第三类LoRa模块无线传输距离的作用，无线信号中继器上只有LoRa模块。LoRa模块可以设计在直流充电桩上，也可以不在直流充电桩上。使用LPWAN技术的无线通信模块LoRa，其中LoRa是具有代表性的远距离低功耗LPWAN无线传输模块，负责通过LoRa模块将数据上传至自组网的局域网，一种模式：第三类直流充电桩将信号传输给第一类直流充电桩，第一类直流充电桩最终传送给监控中心；另一种模式第三类直流充电桩将信号传输给第二类直流充电桩，第二类直流充电桩最终传送给监控中心。The third type of DC charging pile, in order to form a low-cost local area network, requires a wireless signal repeater, which can strengthen the LPWAN wireless transmission signal strength and extend the wireless transmission distance of the third type of LoRa module. There is only LoRa on the wireless signal repeater. module. The LoRa module can be designed on the DC charging pile or not on the DC charging pile. LoRa wireless communication module using LPWAN technology, among which LoRa is a representative long-distance low-power LPWAN wireless transmission module, which is responsible for uploading data to the local area network of the ad hoc network through the LoRa module, one mode: the third type of DC charging pile The signal is transmitted to the first type of DC charging pile, and the first type of DC charging pile is finally transmitted to the monitoring center; another mode, the third type of DC charging pile transmits the signal to the second type of DC charging pile, and the second type of DC charging pile Finally sent to the monitoring center.

所述第三类直流充电桩实现了在既没有4G又没有网线的情况下，通过自己用LoRa模块组网实现充电桩数据的传输。The third type of DC charging pile realizes the transmission of charging pile data by using LoRa module networking by itself in the case of neither 4G nor network cable.

第三类直流充电桩的LoRa模块控制器，在使用LoRa模块传输数据的同时，会在传输的数据中加上所在充电桩编号，并且在传输数据的上层嵌套http应用协议，此协议能保证接收端收到正确顺序的数据。The LoRa module controller of the third type of DC charging pile, when using the LoRa module to transmit data, will add the number of the charging pile to the transmitted data, and nest the http application protocol in the upper layer of the transmitted data. This protocol can guarantee The receiver receives the data in the correct order.

无线信号中继器的供电方式视环境而定，可以是交流供电的，也可以是直流的，也可以是电池供电。电源模块根据不同的供电方式以及模块的用电需求对电源进行变换。The power supply mode of the wireless signal repeater depends on the environment, which can be AC power supply, DC power supply, or battery power supply. The power module transforms the power supply according to different power supply modes and the power demand of the module.

其硬件配合方式包括：Its hardware cooperation includes:

若干第三类直流充电桩与若干中继器以任意组合方式进行连接，然后再将信号传递给第一类直流充电桩或第二类直流充电桩，第一类直流充电桩或第二类直流充电桩将信号传递给台区计量中心服务器。Several third-type DC charging piles and several repeaters are connected in any combination, and then transmit the signal to the first-type DC charging pile or the second-type DC charging pile, the first-type DC charging pile or the second-type DC charging pile The charging pile transmits the signal to the metering center server in the station area.

所述LoRa模块选用安信可公司的Ra-01型号。The LoRa module uses the Ra-01 model of Anxinke Company.

Claims (5)

1. A direct current fills electric pile, its characterized in that includes: the charging system comprises a first type direct current charging pile, a second type direct current charging pile and a third type direct current charging pile;

the first type of direct current charging pile is used for transmitting data of the first type of direct current charging pile and data of other charging piles to a distribution room metering center through a network cable;

the second type direct current charging pile is used for transmitting data of the second type direct current charging pile and data of other charging piles to a distribution room metering center through a 4G module;

the third type direct current charging pile is used for transmitting charging data of the third type direct current charging pile and other charging piles to the first type direct current charging pile and the second type direct current charging pile through the third type LoRa module, and then transmitting the charging data to the distribution room metering center through the first type direct current charging pile and the second type direct current charging pile.

2. The direct current charging pile according to claim 1, wherein the first type of direct current charging pile comprises a first type of LoRa module and a first type of charging pile controller, and the first type of LoRa module comprises a first type of LoRa functional chip and a first type of LoRa module controller;

the first-class LoRa functional chip is connected with an SPI (serial peripheral interface) of a first-class LoRa module controller, the first-class LoRa module controller is connected with the SPI of a first-class charging pile controller, a network port of the first-class charging pile controller is connected with a transformer area metering center, and the first-class LoRa module is connected with other LoRa modules through an LPWAN (Long programmable communications network) protocol;

the first type LoRa module is used for completing wireless networking and is matched with other charging piles to receive and send charging data;

the first type of LoRa functional chip is used for controlling the system to perform wireless transmission of a LoRa protocol;

the first type LoRa module controller is used for deciding on what conditions to receive charging data of other charging piles and on what conditions to send the charging data of the first type LoRa module controller;

the first type charging pile controller is used for transmitting charging pile data with the first type LoRa module.

3. The direct current charging pile according to claim 1, wherein the second type of direct current charging pile comprises a second type LoRa module, a second type charging pile controller and a 4G module, and the second type LoRa module comprises a second type LoRa functional chip and a second type LoRa module controller;

the second-type LoRa functional chip is connected with an SPI (serial peripheral interface) of a second-type LoRa module controller, the second-type LoRa module controller is connected with the SPI of a second-type charging pile controller, a UART (universal asynchronous receiver/transmitter) interface of the second-type charging pile controller is connected with a 4G module and is connected with a transformer area metering center through the 4G module, and the second-type LoRa module is connected with other LoRa modules through an LPWAN (Long programmable wide area network) protocol;

the second type LoRa module is used for completing wireless networking and matching with other charging piles to receive and send charging data;

the second type LoRa functional chip is used for controlling the system to perform wireless transmission of a LoRa protocol;

the second type LoRa module controller is used for deciding on what conditions to receive charging data of other charging piles and on what conditions to send charging data of the second type LoRa module controller;

the second type charging pile controller is used for transmitting data of the charging pile with a second type LoRa module;

and the 4G module is used for transmitting data to a district metering center.

4. The direct current charging pile according to claim 1, wherein the third type of direct current charging pile comprises a third type LoRa module and a third type of charging pile controller, and the third type LoRa module comprises a third type LoRa functional chip and a third type LoRa module controller;

the third-type LoRa functional chip is connected with an SPI (serial peripheral interface) of a third-type LoRa module controller, the third-type LoRa module controller is connected with an SPI (serial peripheral interface) of a third-type charging pile controller, and the third-type LoRa module is connected with other LoRa modules through an LPWAN (Long programmable Wide area network) protocol;

the third type LoRa module is used for completing wireless networking and matching with other charging piles to receive and send charging data;

the third type LoRa functional chip is used for controlling the system to perform wireless transmission of a LoRa protocol;

the third type LoRa module controller is used for deciding on what conditions to receive charging data of other charging piles and on what conditions to send charging data of the third type LoRa module controller;

and the third type charging pile controller is used for transmitting the data of the charging pile with a third type LoRa module.

5. The implementation method of the direct current charging pile is characterized in that the LoRa module controllers of the first type of direct current charging pile and the second type of direct current charging pile implement the following steps:

step S1, when receiving data wirelessly, firstly using http protocol to receive data, and when data needs to be encrypted, using https application layer protocol to receive data;

step S2, extracting the charging pile number provided by the charging pile controller from the data, and determining the source of the received data;

and step S3, according to the data requirement of the distribution room metering center, sending the direct current charging pile data in the area which is not covered by the mobile network to the distribution room metering center.

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