RU214837U1 - ON-BOARD FAST CHARGE CONTROLLER (CCS) - Google Patents

Abstract

The utility model relates to a method for charging an electrically driven vehicle traction battery by means of an external charging station, in particular to electrical equipment that performs the functions of monitoring and controlling the charging process with DC voltage. The on-board fast charge controller is designed for use both as part of an electrically powered vehicle and as part of a charging station. Structurally, the on-board charge controller can be made on a printed circuit board equipped with mounting holes for installing a 48-pin connector for connecting to the on-board network of an electric vehicle, while the printed circuit board can be mounted in a housing for protection against external mechanical and atmospheric influences with a pressure relief valve. Otherwise, the printed circuit board can be mounted without mounting a 48-pin connector with separate connectors for power circuits, CAN communication circuits, Control Pilot line, external indication control circuits, while, if necessary, other circuits can be connected to the appropriate mounting 48-pin connector holes.

Description

The utility model relates to a method for charging an electrically driven vehicle traction battery by means of an external charging station, in particular to electrical equipment that performs the functions of monitoring and controlling the charging process with DC voltage. The on-board fast charge controller is designed for use both as part of an electrically powered vehicle and as part of a charging station.

To charge the traction battery of an electric vehicle with an operating voltage of 200 to 1000 V from an external charging station, the method of charging with AC voltage, followed by the conversion of AC energy into DC by an on-board electric vehicle charger, or the method of charging with DC voltage, in which the voltage is DC current of the required value is supplied directly to the traction battery of electric transport. The latter method can significantly reduce the charging time compared to charging with AC voltage, by five to ten times.

During the charging process, it is required to organize a communication channel between the electric vehicle being charged and an external charging station, through which data on the electrical values of voltage and current, data on the moments of the beginning and end of energy transfer, information on the possible limits of electrical quantities (maximum and minimum values of voltage and current ), information about possible errors.

The communication channel can be organized using the CAN protocols (in CHAdeMO systems) or PLC (in CCS systems), while the electrical equipment of the electric vehicle being charged and the external charging station must include means for transmitting data using one of these protocols, as well as for interacting with other nodes and blocks of electric transport or an external charging station.

Known electrical equipment for managing the process of data transfer, intended for use as part of an external charging station as a fast charge controller for the CCS system via the PLC protocol (see https://in4ech-smartcharging.com/products/charging-station-com/charge- control-m, EVAcharge SE controller, manufactured by in-tech). Known electrical equipment for managing the process of data transmission, intended for use as part of electric transport as a fast charge controller for the CCS system via the PLC protocol (see https://in-tech-smartcharging.com/products/electric-vehicle-communication /charge- control-1 controller Charge Control L, manufactured by in-tech).

Electrical equipment intended for use as part of an external charging station cannot be used as part of an electric vehicle due to the lack of the possibility of processing data from temperature sensors, the possibility of controlling the latch of the mechanism for fixing the charging cable in the charging connector of the electric vehicle, the possibility of processing signals about the immobility of the vehicle (the state of the manual brakes), the absence of a separate open collector output for controlling the contactor of the electric transport power line. Electrical equipment intended for use as part of an electric vehicle cannot be used as part of an external charging station due to the lack of a PWM signal generator of positive and negative polarity, which is necessary for transmitting data in the CCS system via the Control Pilot line to notify the electric vehicle being charged about the connection of the charging cable and readiness to transfer energy, as well as readiness to stop the transfer of energy at the stage of completion of the charge process.

The solution to the problem of unifying electrical equipment for controlling and monitoring the charging process using the PLC protocol in the CCS system can be the use of a single onboard fast charge controller, which includes all the nodes necessary for functioning both as electrical equipment for data transmission as part of an electric vehicle, and in as electrical equipment for data transmission as part of an external charging station.

The objective of the proposed utility model is to unify the electrical equipment for data transmission via the PLC protocol in the CCS system for electric transport and external charging station through the introduction of all the nodes necessary for the functioning of both the electric transport and the charging station, as well as the unity of the design solution.

The technical result is achieved due to the proposed new set of essential features of the onboard fast charge controller for data transmission via the PLC protocol in the CCS system.

The claimed utility model is illustrated by the drawings of Fig. 1-3, which show:

fig. 1 is a functional block diagram of an onboard fast charge controller;

fig. 2 is a view of the onboard fast charge controller;

fig. 3 is a view of the onboard fast charge controller in the case.

The onboard fast charge controller works as follows. The microcontroller (1), containing a specialized program for controlling both the charging process and interaction with external devices of an electric transport or charging station, carries out the process of data exchange via the CAN protocol via a CAN protocol transceiver (3) with an external device of an electric transport or charging station, receiving from it the parameters of the charging station. sessions and control commands, as well as the issuance of information about the progress and parameters of the current charging session to an electric vehicle or a charging station. The microcontroller (1) receives the following parameters from the electric vehicle or charging station: charging session control commands, command to control the traction battery power circuit contactor, charging connector latch control commands, current state of the electric vehicle or charging station, maximum values of charging voltage, current, power, set voltage and current values, estimated time until the end of the charge, the capacity of the traction battery of electric vehicles, the required energy value for charging. The microcontroller (1) ensures the transmission of the following data to the electric vehicle or to the charging station: the current status of the charging session, the status of the latch of the charging connector, the current temperature of the contacts of the charging connector, the current values of voltage, current and power, the maximum and minimum values of voltage, current and power.

The interaction between the electric transport and the charging station is carried out according to the PLC protocol, for which the PLC modem (4) is used, which generates a high-frequency signal transmitted via the Control Pilot line against the background of a low-frequency signal. The control for receiving and transmitting data by the PLC modem is carried out by the microcontroller (1).

The microcontroller (2), containing a specialized program, interacts with the microcontroller (1) and, by its commands, polls the state of the temperature sensor processing unit (9), which, by the resistance of the temperature sensors of the charging connector contacts, allows you to control the temperature during the charging process. Also, the microcontroller (2) by a signal from the microcontroller (1) sends a command to the open collector type output (10) to turn on or off the contactor of the power circuit of the traction battery of the electric vehicle. At the commands of the microcontroller (1), the microcontroller (2) controls the driver for controlling the electromechanical blocking device of the charging connector - the latch (5), which allows you to fix the charging cable in the charging connector of the electric vehicle before the start of a new charging session, and at its end, at the moment the output voltage reaches a safe level, open the latch. A new charging session can only be started when the electric vehicle is put on the handbrake, for the status of which is polled by the handbrake state processing unit (8), information about which is transmitted through the microcontroller (2) to the microcontroller (1). To additionally display information about the progress and status of the charging session, external indicating means can be used, which are controlled by the microcontroller (2) at the commands of the microcontroller (1) through the external indicating means control unit (6). Such means can be both indicators on the dashboard of an electric vehicle and indicators on a charging station. The microcontroller (2) also controls the PWM signal generator of positive and negative polarity via the Control Pilot line to notify the electric vehicle being charged about the connection of the charging cable and readiness to transfer energy, as well as readiness to stop the transfer of energy at the stage of completion of the charging process.

Structurally, the on-board charge controller can be made on a printed circuit board equipped with mounting holes for installing a 48-pin connector for connecting to the on-board network of an electric vehicle, while the printed circuit board can be mounted in a housing for protection against external mechanical and atmospheric influences with a pressure relief valve. Otherwise, the printed circuit board can be mounted without mounting a 48-pin connector with separate connectors for power circuits, CAN communication circuits, Control Pilot line, external indication control circuits, while, if necessary, other circuits can be connected to the appropriate mounting 48-pin connector holes.

The advantage of the claimed utility model is the unification of electrical equipment for data transmission via the PLC protocol in the CCS system for electric vehicles and an external charging station.

Claims (2)

1. An on-board fast charge controller (CCS), containing a CAN protocol transceiver for receiving charging session parameters and control commands from an external device as part of an electric vehicle or an external charging station, containing a PLC modem for digital data exchange between an electric vehicle and an external charging station, containing a node processing data from temperature sensors by their resistance value to control the temperature of the contacts of the electric vehicle charging connector, containing a driver for controlling the electromechanical blocking device of the electric vehicle charging connector, containing a signal processing unit from the hand brake, containing a separate open collector type output for controlling the power line contactor of the electric vehicle traction battery, containing a PWM signal generator of positive and negative polarity via the Control Pilot line to notify the electric vehicle being charged about the connection of the charging cable and readiness for power transfer, as well as readiness to stop the transfer of energy at the stage of completion of the charging process, containing a node for generating signals for controlling external means of indication, characterized in that the transceiver of the CAN protocol and the PLC modem are controlled by the first specialized microcontroller containing a program for controlling the charging process and interacting with external electric transport devices or external charging station, data processing unit from temperature sensors, driver for controlling the electromechanical blocking device of the charging socket, signal processing unit from the handbrake, separate open collector output, PWM signal generator of positive and negative polarity on the Control Pilot line, control signal generation unit external means of indication are controlled by a second specialized microcontroller containing a program for interacting with the first specialized microcontroller, a 48-pin connector for data input / output, and the ability to Enclosure mount for protection against the external environment with a pressure relief valve. 2. The device according to claim 1, characterized in that instead of a 48-pin connector, there are separate connectors for power circuits, data exchange circuits via the CAN protocol, the Control Pilot line, and control circuits for external display means.

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