System and method for monitoring coordination/control of multi-output integrated charger for electric automobile

• US 9,969,289 B2
• Filed: 10/21/2014
• Issued: 05/15/2018
• Est. Priority Date: 09/17/2013
• Status: Active Grant

• Current Assignee: Shandong Luruan Digital Technology Company Limited Smart Energy Branch
• Original Assignee: Shandong Luneng Intelligence Technology Co., Ltd
• Inventors: Mu, Shiyou, Zuo, Antai, He, Juntian, Meng, Xiangjun, Fu, Chongguang, Fu, Mengchao, Yang, Yong, Chen, Song, Zhang, Zonghui
• Primary Examiner(s): Kik, Phallaka
• Application Number:
  US14/917,777
• Publication Number:
  US 20160221464A1
• Time in Patent Office: 1,302 Days
• Field of Search: 320109, 320104
• CPC Class Codes: B60L 2240/36 Temperature of vehicle components or parts
• CPC Class Codes: B60L 2240/80 Time limits
• CPC Class Codes: B60L 2250/10 by alarm
• CPC Class Codes: B60L 3/0069 relating to the isolation, e.g. ground fault or leak current
• CPC Class Codes: B60L 3/04 Cutting off the power supply under fault conditions protective devices and circuit arrangements in general H01H; H02H
• CPC Class Codes: B60L 3/12 Recording operating variables ; Monitoring of operating variables
• CPC Class Codes: B60L 53/63 in response to network capacity
• CPC Class Codes: B60L 53/65 involving identification of vehicles or their battery types
• CPC Class Codes: B60L 53/665 Methods related to measuring, billing or payment
• CPC Class Codes: B60L 53/67 Controlling two or more charging stations
• CPC Class Codes: B60L 58/12 responding to state of charge [SoC]
• CPC Class Codes: H02J 7/00 Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
• CPC Class Codes: H02J 7/0029 with safety or protection devices or circuits
• CPC Class Codes: Y02T 10/70 Energy storage systems for electromobility, e.g. batteries
• CPC Class Codes: Y02T 10/7072 Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
• CPC Class Codes: Y02T 90/12 Electric charging stations
• CPC Class Codes: Y02T 90/14 Plug-in electric vehicles
• CPC Class Codes: Y02T 90/16 Information or communication technologies improving the operation of electric vehicles
• CPC Class Codes: Y02T 90/167 Systems integrating technologies related to power network operation and communication or information technologies for supporting the interoperability of electric or hybrid vehicles, i.e. smartgrids as interface for battery charging of electric vehicles [EV] or hybrid vehicles [HEV]
• CPC Class Codes: Y04S 30/14 Details associated with the interoperability, e.g. vehicle recognition, authentication, identification or billing

Abstract

A system and method for monitoring coordination/control of a multi-output integrated charger for electric automobiles, comprising a voltage/current demand collection module, an optimal-policy design module, and a policy execution module. The voltage/current demand collection module transmits demand information to the optimal-policy design module; the optimal-policy design module provides policy design results to the policy execution module; the policy execution module feeds back execution results to the optimal-policy design module; and, the optimal-policy design module feeds back the results to the voltage/current demand collection module. By means of real-time selection of an optimal power output policy, the present invention solves the safety, timeliness, and versatility issues concerning demand for power, voltage, and current during the charging process.

Claims

1. A method for monitoring a multi-output coordination control integrated charger of an electric vehicle, wherein the method comprises:

step

     1), initializing system data, wherein system parameters and configuration data are loaded and parsed;

step

     2), loading sub-functions, wherein the sub-functions are configured to implement an operating log module, a data model module, a system alarm processing module, a billing processing module, a charging requirement acquiring module, and a charging strategy executing module;

wherein the operating log module records a system operating status, abnormal data, and abnormal process operation during an operation in a real time way; and

a log is divided into four levels comprising a debug log, a general information log, an alarm information log, and an error information log;

wherein the data model module reads and writes test point data in a real time way, where the test point data includes a mount of data and signal acquired by each of devices of a device layer;

wherein the system alarm processing module collects and processes various alarm information during the operation of the system, notifies a related module to process the alarm in a real time way, and analyzes and processes abnormal data and abnormal four-remote data during the operation of the system;

and wherein the billing processing module records a fee generated by the system in a process of charging;

and step

     3), customizing an optimal strategy, wherein a charging requirement acquiring module transmits a charging requirement to an optimal strategy customization module, the optimal strategy customization module provides a strategy customization result to a charging strategy executing module, the charging strategy executing module feeds back an execution result to the optimal strategy customization module, and the optimal strategy customization module feeds back the result to the charging requirement acquiring module; and

wherein the optimal strategy customization module has four operating states comprising a stop state for inspection, a state of starting charging, an inspection state during charging, and a state of stopping charging, the optimal strategy customization module generates an optimal strategy by analyzing data provided by a data model module and a system alarm processing module, and performs a function of optimal strategy customization;

in a case that it is determined that the operating state is switched, the operating states are switched in response to a determination result of switching the operating state;

an interface of a system log module is called, and an operating log is recorded; and

a billing processing module is called, and a charging record is generated.

2. The method for monitoring the multi-output coordination control integrated charger of the electric vehicle according to claim 1, wherein the inspection state during charging of the optimal strategy customization module in the step 3 comprises:

step (1), starting an inspection during charging;

step (2), determining whether there is an alarm module, and going to step (4) in the case that there is the alarm module; and

going to step (3) in the case that there is not the alarm module;

step (3), sending a single module stop command, determining whether the single module is successfully stopped;

going to step (4) in the case that the single module is successfully stopped; and

going to step (13) in the case that the single module is not stopped successfully;

step (4), determining whether an output of an activated module is not greater than a requirement;

going to step (6) in the case that the output of the activated module is not greater than the requirement; and

going to step (5) in the case that the output of the activated module is greater than the requirement;

step (5), determining whether a single inactivated charging module is available;

going to step (7) in the case that the single inactivated charging module is available; and

going to step (13) in the case that no single inactivated charging module is available;

step (6), determining whether a real-time output is greater than the requirement; and

going to step (8) in the case that the real-time output is greater than the requirement;

step (7), determining whether the single module is successfully activated;

going to step (6) in the cast that the single module is successfully activated; and

going to step (13) in the cast that the single module is not activated successfully;

step (8), determining whether the single module is not required to be inactivated;

activating the single module in the case that the single module is required to be inactivated; and

going to step (9) in the case that the single module is not required to be inactivated;

step (9), determining whether it is not required to reset the output;

going to step (11) in the case that it is not required to reset the output; and

setting a voltage and current and going to step (12) in the case that it is required to reset the output;

step (10), determining whether the single module is successfully inactivated;

going to step (9) in the case that the single module is successfully inactivated; and

going to step (13) in the case that the single module is not inactivated successfully;

step (11), determining whether the inspecting during charging is continued;

going to step (13) in the case that the inspection during charging is not continued;

step (12), determining whether the setting is successful;

going to step (11) in the case that the setting is successful;

going to step (13) in the case that the setting is not successful; and

step (13), stopping charging.

3. The method according to claim 1, wherein the system for monitoring a multi-output coordination control integrated charger of an electric vehicle, comprises:

a central control layer, configured to obtain an operation on a user interface and query system information;

a data processing layer, configured to customize a specific application, wherein the specific application includes;

strategy customization, system alarm, billing, data model, system operating log;

a data communication layer, configured to establish a communication link, and data transmit and receive data; and

a device layer, configured to acquire data from a charging module and multiple output power ports of the multi-output coordination control integrated charger of an electric vehicle, and distribute data on multiple paths to the data processing layer through the data communication layer;

wherein the data processing layer comprises;

the optimal strategy customization module, configured to form the optimal strategy based on the charging requirement and an activated status of the charging module, and issue the optimal strategy to a related module;

wherein operating states of the optimal strategy customization module comprises the stop state for inspection, the state of starting charging, the inspection state during charging, and the state of stopping charging.

4. The method according to claim 3, wherein the data processing layer further comprises:

the system alarm processing module, configured to collect and process various alarm information during an operation of the system, and notify a related module to process the alarm in a real time way;

the billing processing module, configured to record a fee generated by the system in a process of charging;

the data model module, configured to process data interaction, wherein the data model module obtains data acquired by a charging requirement acquiring module and issues control data to a charging strategy executing module; and

the operating log module, configured to collect system operation status, and provide a basis of a system maintenance, wherein a log is divided into four levels comprising a debug log, a general information log, an alarm information log, and an error information log.

5. The method according to claim 4, wherein the data processing layer further comprises:

a charging requirement acquiring module configured to obtain a required voltage and current in a real time way, wherein the charging requirement acquiring module obtains requirement information of BMS of the charged vehicle in a real time way through a CAN bus, and provides a real-time output of the system and a system status variable; and

a charging strategy executing module configured to execute an optimal output strategy, wherein the charging strategy executing module monitors and controls a charging module in a real time way through a CAN bus, a RS485 bus, or a RS422 bus; and

provides real-time data of the charging module;

if a failure, comprising under-voltage, over-current, short circuit, and overheating, happens to the charging module, a failure alarm signal is outputted.

6. The method according to claim 3, wherein the data processing layer further comprises:

the charging requirement acquiring module configured to obtain a required voltage and current in a real time way, wherein the charging requirement acquiring module obtains requirement information of BMS of the charged vehicle in a real time way through a CAN bus, and provides a real-time output of the system and a system status variable; and

the charging strategy executing module configured to execute an optimal output strategy, wherein the charging strategy executing module monitors and controls a charging module in a real time way through a CAN bus, a RS485 bus, or a RS422 bus; and

provides real-time data of the charging module;

if a failure, comprising under-voltage, over-current, short circuit, and overheating, happens to the charging module, a failure alarm signal is outputted.

7. The method according to claim 3, wherein

in the stop state for inspection, whether the charging module is activated or inactivated is monitored, and a maximum available output voltage and current is calculated in a real time way;

in the state of starting charging, a charging module is provided to perform a charging operation, according to a required voltage, a required current and a maximum output voltage and current of the charger at a present moment, where in the state of starting charging, a function of starting a single module and a function of starting multiple modules are provided;

in the inspection state during charging, a situation of the charging module in an operation process is monitored in a real time way; and

in the state of stopping charging, a charging operation of a charging module, which is providing an output, is stopped.

8. The method according to claim 7, wherein the inspection state during charging comprises the following four situations:

in a case that a failure alarm signal of the charging module is received, and it is determined to stop a failed charging module by analyzing and processing the failure alarm signal, a charging module to be stopped is switched into a state of stopping charging, and a new voltage and current distribution strategy is provided to the charging strategy executing module;

in a case that a maximum output of an activated module does not meet a requirement, an available standby charging module is provided;

in a case that minimum output power of the activated module is greater than required power, a part of output modules is stopped; and

in a case that output power is not equal to the required power, the output power is dynamically regulated in a real time way.

9. The method according to claim 3, wherein the inspection state during charging comprises the following four situations:

in a case that a failure alarm signal of the charging module is received, and it is determined to stop a failed charging module by analyzing and processing the failure alarm signal, a charging module to be stopped is switched into a state of stopping charging, and a new voltage and current distribution strategy is provided to the charging strategy executing module;

in a case that a maximum output of an activated module does not meet a requirement, an available standby charging module is provided;

in a case that minimum output power of the activated module is greater than required power, a part of output modules is stopped; and

in a case that output power is not equal to the required power, the output power is dynamically regulated in a real time way.