阅读说明：本技术 一种车载充电机控制系统及方法 (Vehicle-mounted charger control system and method ) 是由 胡真 王超 余光木 姜代平 赵大超 于 2021-06-17 设计创作，主要内容包括：本申请公开一种车载充电机控制系统及方法,通过车端通讯控制器利用第一电阻信号检测模块监测电阻两端电压信号；车端通讯控制器根据电阻两端电压信号,确定进入放电模式；模拟出目标电阻信号,并模拟出目标放电控制信号；车载充电机获取整车控制器发送的放电类型信号；利用第二电阻信号检测模块获取目标电阻信号,利用第二控制信号检测模块获取目标放电控制信号；根据目标电阻信号、目标放电控制信号和放电类型信号,确定放电模式的目标类型；并控制第二控制信号发送模块向负载进行放电模式的目标类型所对应的信号交互方式,以控制对负载进行充电,可以实现对该多种类型负载进行供电,拓展新能源汽车的放电功能。(The application discloses a vehicle-mounted charger control system and method, wherein a vehicle-end communication controller monitors voltage signals at two ends of a resistor by using a first resistor signal detection module; the vehicle-end communication controller determines to enter a discharging mode according to voltage signals at two ends of the resistor; simulating a target resistance signal and a target discharge control signal; the vehicle-mounted charger acquires a discharge type signal sent by the vehicle controller; acquiring a target resistance signal by using a second resistance signal detection module, and acquiring a target discharge control signal by using a second control signal detection module; determining a target type of a discharge mode according to the target resistance signal, the target discharge control signal and the discharge type signal; and the second control signal sending module is controlled to carry out a signal interaction mode corresponding to the target type of the discharging mode on the load so as to control the load to be charged, so that the power supply for various types of loads can be realized, and the discharging function of the new energy automobile is expanded.)

1. The utility model provides a vehicle-mounted charger control system which characterized in that, the system includes: the vehicle-end communication controller, the vehicle-mounted charger and the vehicle control unit; the vehicle-end communication controller comprises a first resistance signal detection module, a resistance signal sending module and a first control signal sending module, and the vehicle-mounted charger comprises a second resistance signal detection module, a second control signal detection module and a second control signal sending module;

the vehicle-end communication controller is used for monitoring voltage signals at two ends of a resistor by using the first resistor signal detection module, determining to enter a discharge mode according to the voltage signals at two ends of the resistor, simulating a target resistor signal by using the resistor signal sending module, sending the target resistor signal to the vehicle-mounted charger, and simulating a target discharge control signal by using the first control signal sending module and sending the target discharge control signal to the vehicle-mounted charger;

the vehicle-mounted charger is used for acquiring a discharge type signal sent by a vehicle control unit, acquiring the target resistance signal by using the second resistance signal detection module, acquiring the target discharge control signal by using the second control signal detection module, determining a target type of a discharge mode according to the target resistance signal, the target discharge control signal and the discharge type signal, and controlling the second control signal sending module to carry out signal interaction corresponding to the target type of the discharge mode on a load according to the target type of the discharge mode so as to charge the load.

2. The system of claim 1, wherein the vehicle-end communication controller further comprises a first control switch, a first control module, and a first control signal detection module, the first control module comprising a first switch; the vehicle-mounted charger further comprises a second control module and a second control switch, and the second control module comprises a second switch;

the vehicle-end communication controller is also used for determining to enter a charging mode according to voltage signals at two ends of the resistor, controlling the first control switch to be closed, controlling the second control switch to be opened, monitoring a charging control signal by using the first control signal detection module, determining the type of the charging control signal, when the charging control signal is a first type charging control signal, simulating a target resistance signal by using the resistance signal sending module, and sends the target resistance signal to the vehicle-mounted charger, simulates a target first-type charging control signal by using the first control signal sending module, and sends the target first-type charging control signal to the vehicle-mounted charger, when the second switch is monitored to be closed, controlling the first switch in the first control module to be closed so as to carry out alternating current charging;

the vehicle-mounted charger is further used for detecting the target first-type charging control signal by using the second control signal detection module and controlling the second switch in the second control module to be closed according to the target first-type charging control signal.

3. The system of claim 1, further comprising a battery management system;

the vehicle-end communication controller is also used for determining to enter a charging mode according to voltage signals at two ends of the resistor; determining the type of the charge and discharge control signal; when the charging control signal is a second type charging control signal, controlling a first switch in a first control module to be closed;

and the battery management system is used for controlling direct current charging after the first switch is closed.

4. The system of claim 1, wherein the vehicle controller is further configured to obtain a target CAN signal after the vehicle-end communication controller monitors the voltage signal and the charge-discharge control signal across the resistor; determining whether preset charging and discharging conditions are met or not according to the target CAN signal; and if not, ending the current charging and discharging behavior.

5. A control method for a vehicle-mounted charger is characterized by comprising the following steps:

the vehicle-end communication controller monitors voltage signals at two ends of the resistor by using the first resistor signal detection module;

the vehicle-end communication controller determines to enter a discharging mode according to voltage signals at two ends of the resistor, simulates a target resistor signal by using a resistor signal sending module, sends the target resistor signal to the vehicle-mounted charger, and simulates a target discharging control signal by using a first control signal sending module to send the target discharging control signal to the vehicle-mounted charger;

the vehicle-mounted charger acquires a discharge type signal sent by the vehicle control unit;

the vehicle-mounted charger acquires a target resistance signal by using a second resistance signal detection module and acquires a target discharge control signal by using a second control signal detection module;

the vehicle-mounted charger determines the target type of the discharge mode according to the target resistance signal, the target discharge control signal and the discharge type signal;

and the vehicle-mounted charger controls a second control signal sending module to carry out a signal interaction mode corresponding to the target type of the discharge mode on the load according to the target type of the discharge mode so as to control the load to be charged.

6. The method according to claim 5, wherein the vehicle-mounted charger controls, according to the target type of the discharge mode, a second control signal sending module to perform a signal interaction mode corresponding to the target type of the discharge mode on the load, so as to control charging of the load, and the method comprises:

when the target type of the discharge mode is discharging the household appliance, the vehicle-mounted charger discharges the household appliance;

when the target type of the discharge mode is discharging to a target vehicle, the vehicle-mounted charger sends a first target discharge signal to the target vehicle by using the second control signal sending module, so as to perform discharge confirmation with the target vehicle and discharge the target vehicle;

and when the target type of the discharge mode is a household or power grid discharge type, the vehicle-mounted charger sends a second target discharge signal to the household or power grid by using the second control signal sending module so as to carry out discharge confirmation with the household or power grid and discharge the household or power grid.

7. The method of claim 5, further comprising:

the vehicle-end communication controller determines to enter a charging mode according to voltage signals at two ends of the resistor;

the vehicle-end communication controller controls the first control switch to be closed and controls the second control switch to be opened, monitors a charging control signal by using the first control signal detection module, and determines the type of the charging control signal;

when the charging control signal is a first type charging control signal, the vehicle-end communication controller simulates a target resistance signal by using the resistance signal sending module and sends the target resistance signal to the vehicle-mounted charger, and simulates a target first type charging control signal by using the first control signal sending module and sends the target first type charging control signal to the vehicle-mounted charger;

the vehicle-mounted charger controls a second switch in a second control module to be closed according to the target resistance signal and the target first type charging control signal;

when monitoring that the second switch is closed, the vehicle-end communication controller controls a first switch in a first control module to be closed, and controls the vehicle-mounted charger to carry out alternating current charging.

8. The method of claim 7, wherein after the vehicle-end communication controller determines to enter the charging mode based on the voltage signal across the resistor, the method further comprises:

the vehicle end communication controller is in signal communication with the charging pile and is in signal handshake with the charging pile.

9. The method of claim 5, wherein the vehicle-end communication controller controls the first control switch to be closed and the second control switch to be opened, monitors the charging control signal by using the first control signal detection module, and determines the type of the charging control signal, and the method further comprises:

and the vehicle-end communication controller controls a first switch in the first control module to be closed and controls the battery management system to carry out direct-current charging when the charging control signal is a second type charging control signal.

10. The method of claim 5, wherein after the vehicle-end communication controller determines to enter the discharging mode according to the voltage signal across the resistor, the method further comprises:

the vehicle control unit acquires a target CAN signal;

the vehicle control unit determines whether preset charging and discharging conditions are met according to the target CAN signal;

and if not, controlling to end the current charging and discharging behavior.

Technical Field

The invention relates to the field of new energy automobiles, in particular to a vehicle-mounted charger control system and method.

Background

The global new energy automobile develops rapidly, and the new energy automobile not only can be regarded as electric quantity user and electric power consumption body, simultaneously, can regard as green removal energy storage unit to supply power for the electric wire netting when the new energy automobile is idle. And bidirectional exchange between the energy of the new energy automobile and the power grid in a controlled state is realized.

However, the type of power supply of the new energy automobile to the external load is single, and the same new energy automobile cannot supply power to various types of loads, and under the condition that more and more new energy automobiles are used, the single power supply function cannot meet the user requirement, and the user experience is reduced.

Disclosure of Invention

In order to solve the technical problems, the invention provides a vehicle-mounted charger control system and method, which can supply power to various types of loads, expand the discharging function of a new energy automobile and improve the user experience.

In order to achieve the object of the above application, the present application provides an in-vehicle charger control system, including:

the vehicle-end communication controller, the vehicle-mounted charger and the vehicle control unit; the vehicle-end communication controller comprises a first resistance signal detection module, a resistance signal sending module and a first control signal sending module, and the vehicle-mounted charger comprises a second resistance signal detection module, a second control signal detection module and a second control signal sending module;

the vehicle-end communication controller is used for monitoring voltage signals at two ends of a resistor by using the first resistor signal detection module, determining to enter a discharging mode according to the voltage signals at two ends of the resistor, simulating a target resistor signal by using the resistor signal sending module, sending the target resistor signal to the vehicle-mounted charger, and simulating a target discharging control signal by using the first control signal sending module, and sending the target discharging control signal to the vehicle-mounted charger.

The vehicle-mounted charger is used for acquiring a discharge type signal sent by a vehicle control unit, acquiring the target resistance signal by using the second resistance signal detection module, acquiring the target discharge control signal by using the second control signal detection module, determining a target type of a discharge mode according to the target resistance signal, the target discharge control signal and the discharge type signal, and controlling the second control signal sending module to carry out signal interaction corresponding to the target type of the discharge mode on a load according to the target type of the discharge mode so as to charge the load.

On the other hand, the application also provides a control method of the vehicle-mounted charger, and the method comprises the following steps:

the vehicle-end communication controller monitors voltage signals at two ends of the resistor by using the first resistor signal detection module;

the vehicle-end communication controller determines to enter a discharging mode according to voltage signals at two ends of the resistor;

the vehicle-end communication controller simulates a target resistance signal by using a resistance signal sending module and sends the target resistance signal to the vehicle-mounted charger, and simulates a target discharge control signal by using a first control signal sending module and sends the target discharge control signal to the vehicle-mounted charger;

the vehicle-mounted charger acquires a discharge type signal sent by the vehicle control unit;

the vehicle-mounted charger acquires a target resistance signal by using a second resistance signal detection module and acquires a target discharge control signal by using a second control signal detection module;

the vehicle-mounted charger determines the target type of the discharge mode according to the target resistance signal, the target discharge control signal and the discharge type signal;

and the vehicle-mounted charger controls a second control signal sending module to carry out a signal interaction mode corresponding to the target type of the discharge mode on the load according to the target type of the discharge mode so as to control the load to be charged.

The application has the following beneficial effects:

the method comprises the steps that a vehicle-end communication controller monitors voltage signals at two ends of a resistor through a first resistor signal detection module; the vehicle-end communication controller determines to enter a discharging mode according to voltage signals at two ends of the resistor; the vehicle-end communication controller simulates a target resistance signal by using a resistance signal sending module and sends the target resistance signal to the vehicle-mounted charger, and simulates a target discharge control signal by using a first control signal sending module and sends the target discharge control signal to the vehicle-mounted charger; the vehicle-mounted charger acquires a discharge type signal sent by the vehicle control unit; the vehicle-mounted charger acquires a target resistance signal by using a second resistance signal detection module and acquires a target discharge control signal by using a second control signal detection module; the vehicle-mounted charger determines the target type of the discharge mode according to the target resistance signal, the target discharge control signal and the discharge type signal; the vehicle-mounted charger controls the second control signal sending module to carry out a signal interaction mode corresponding to the target type of the discharge mode on the load according to the target type of the discharge mode so as to control the load to be charged, so that power can be supplied to the various types of loads, the discharge function of the new energy automobile can be expanded, and the user experience is improved.

Drawings

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

Fig. 1 is a schematic diagram of an in-vehicle charger control system according to an embodiment of the present disclosure;

fig. 2 is a schematic diagram of an in-vehicle charger control system according to another embodiment of the present application;

fig. 3 is a schematic diagram of an in-vehicle charger control system according to another embodiment of the present application;

fig. 4 is a schematic flow chart of a control method of a vehicle-mounted charger according to an embodiment of the present application;

fig. 5 is a schematic diagram of an in-vehicle charger control system according to another embodiment of the present application;

fig. 6 is a schematic diagram of an in-vehicle charger control system according to another embodiment of the present application.

Detailed Description

In order to make those skilled in the art better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or 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 server 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.

In order to implement the technical solution of the present application, so that more engineering workers can easily understand and apply the present application, the working principle of the present application will be further described with reference to specific embodiments.

The present application can be applied to the field of new energy vehicles, and an embodiment of a vehicle-mounted charger control system according to the present application is introduced first below, and fig. 1 is a schematic structural diagram of a vehicle-mounted charger control system according to the present application. Specifically, as shown in fig. 1, the system may include: the vehicle-mounted charging system comprises a vehicle-end communication controller 11, a vehicle-mounted charger 12 and a vehicle control unit 13. The system can further include a power battery 14, the vehicle-end communication controller 11 includes a first resistance signal detection module 110, a resistance signal transmission module 111, and a first control signal transmission module 112, and the vehicle-mounted charger 12 includes a second resistance signal detection module 120, a second control signal detection module 121, and a second control signal transmission module 122.

The vehicle-end communication controller 11 is configured to monitor voltage signals at two ends of the resistor by using the first resistance signal detection module 110, confirm that the vehicle-end communication controller enters a discharging mode according to the voltage signals at two ends of the resistor, simulate a target resistance signal by using the resistance signal transmission module 111, transmit the target resistance signal to the vehicle-mounted charger 12, and simulate a target discharging control signal by using the first control signal transmission module 112 and transmit the target discharging control signal to the vehicle-mounted charger 12.

In some embodiments, the vehicle-mounted charger 12 may be set to be in a sleep state, so as to save the consumption of the electric quantity by the vehicle-mounted charger 12. When the vehicle-end communication controller 11 determines to enter the discharging mode, the vehicle-end communication controller 11 sends a wake-up message to the vehicle-mounted charger 12 to wake up the vehicle-mounted charger 12.

The vehicle-mounted charger 12 is configured to obtain a discharge type signal sent by the vehicle control unit 13, obtain a target resistance signal by using the second resistance signal detection module 120, obtain a target discharge control signal by using the second control signal detection module 121, determine a target type of a discharge mode according to the target resistance signal, the target discharge control signal, and the discharge type signal, and control the second control signal sending module 122 to perform signal interaction corresponding to the target type of the discharge mode on the load according to the target type of the discharge mode, so as to discharge the load.

Specifically, as shown in fig. 2, the vehicle-end communication controller 11 may further include a first control switch 1132, a first control module 113, and a first control signal detection module 114, where the first control module 113 includes a first switch 1131. The vehicle-mounted charger 12 may further include a second control module 123 and a second control switch 1221, and the second control module 123 may include a second switch 1231.

The vehicle-end communication controller 11 is further configured to determine to enter a charging mode according to voltage signals at two ends of the resistor, control the first control switch 1132 to be closed, control the second control switch 1221 to be opened, monitor a charging control signal transmitted through the socket by using the first control signal detection module 114, determine a type of the charging control signal, send the voltage signal at two ends of the resistor to the vehicle-mounted charger 12 by using the resistor signal sending module 111 when the charging control signal is the first type of charging control signal, simulate a target first type of charging control signal by using the first control signal sending module 112, send the target first type of charging control signal to the vehicle-mounted charger 12, and control the first switch 1131 in the first control module 113 to be closed when it is monitored that the second switch 1231 is closed, so as to perform ac charging. The vehicle-side communication controller 11 may determine whether the second switch 1231 is closed through a voltage change before and after the first switch 1131 is closed.

The vehicle-mounted charger 12 is further configured to detect a target first-type charging control signal by using the second control signal detection module 121, and control the second switch 1231 in the second control module 123 to be closed according to the target first-type charging control signal.

Specifically, as shown in fig. 3, the system may further include a battery management system 15. The vehicle-end communication controller 11 is further configured to determine to enter a charging mode according to voltage signals at two ends of the resistor; determining a type of a charge control signal; when the charging control signal is the second type of charging control signal, controlling the first switch 1131 in the first control module 113 to close;

the battery management system 14 is configured to perform dc charging after the first switch 1131 is closed.

Specifically, the vehicle controller 13 is further configured to obtain a target CAN signal after the vehicle-end communication controller 11 monitors voltage signals and charge-discharge control signals at two ends of the resistor; determining whether preset charging and discharging conditions are met or not according to the target CAN signal; and if not, ending the current charging and discharging behavior.

In another aspect of the present application, an embodiment of a control method for a vehicle-mounted charger is further provided, and fig. 3 is a schematic flow diagram of the control method for the vehicle-mounted charger according to the embodiment of the present application. The present specification provides method steps as described in the examples or flowcharts, but may include more or fewer steps based on routine or non-inventive labor. The order of steps recited in the embodiments is merely one manner of performing the steps in a multitude of orders and does not represent the only order of execution. As shown in fig. 4, the method may include:

s101: the vehicle-end communication controller monitors voltage signals at two ends of the resistor by using the first resistor signal detection module.

Specifically, car end communication controller receives the resistance signal that the rifle that charges sent through the socket, and the resistance signal is the signal of passing through socket PP terminal input by the rifle that charges, and the resistance signal representation is charged the rifle and is filled the connection status of electric pile and the overload capacity of the rifle that charges. Because the resistance in the rifle that charges is when being connected with different electric pile that fills, the resistance is different, and the resistance signal of transmission acts on the resistance, makes resistance both ends voltage change. The vehicle-end communication controller can monitor voltage signals at two ends of the resistor through a PP terminal of the socket, and can monitor charging and discharging control signals through a CP terminal of the socket.

The terminals of the socket in this application may include PP, CP, L1, L2, L3, N, DC +, DC-, PE. The charging gun and the charging pile are connected well and are different in overload capacity, the power of the charging gun does not exceed rated power and is different in resistance signal when the power of the charging gun does not exceed the rated power, the signal (charging and discharging control signal) received by the CP terminal is a pulse width modulation signal, the L1, the L2, the L3 and the N terminal provide alternating current, the DC + and DC-terminals provide high-voltage direct current, and the PE terminal provides vehicle end grounding for safety protection.

S103: and the vehicle-end communication controller determines to enter a discharging mode according to voltage signals at two ends of the resistor.

Specifically, the voltage values at two ends of the resistor may be preset as a basis for determining whether to perform charging and discharging, for example, when the vehicle-end communication controller monitors that the voltage values at two ends of the resistor in the resistor signal are a, c, and e, it is determined to enter the discharging mode. The vehicle-mounted charger can be set to be in a dormant state, and when the vehicle-end communication controller confirms that the vehicle-end communication controller enters the discharging mode, the vehicle-end communication controller sends awakening information to the vehicle-mounted charger so as to awaken the vehicle-mounted charger. The vehicle-mounted charger is in a dormant state by default, so that the vehicle-mounted charger is beneficial to saving the consumption of electric quantity when the vehicle-mounted charger is in a working state all the time.

S105: the vehicle-end communication controller simulates a target resistance signal by using the resistance signal sending module, sends the target resistance signal to the vehicle-mounted charger, simulates a target discharge control signal by using the first control signal sending module, and sends the target discharge control signal to the vehicle-mounted charger.

Specifically, since the voltage signal at the two ends of the resistor and the discharge control signal may be signals of different regional standards, the vehicle-mounted charger may not be able to directly process the voltage signal at the two ends of the resistor and the discharge control signal. For example, the voltage signal across the resistor and the discharge control signal may be signals meeting a first region standard, may also be signals meeting a second region standard, and may also be signals meeting the second region standard. The vehicle-mounted charger may only identify signals meeting a second standard of the first area and a standard of the second area, but cannot identify signals meeting the first standard of the first area, and the vehicle-end communication controller may simulate a target resistance signal which can be identified and processed by the vehicle-mounted charger by using the resistance signal sending module and send the target resistance signal to the vehicle-mounted charger; the first control signal sending module can be used for simulating a target discharge control signal and sending the target discharge control signal to the vehicle-mounted charger, so that the compatibility of the vehicle-mounted charger to the signal is improved.

S107: and the vehicle-mounted charger acquires a discharge type signal sent by the vehicle control unit.

Specifically, the discharge type signal is a signal sent to the vehicle-mounted charger by the vehicle control unit. In some embodiments, the selection manner of the discharge type signal may be preset on the vehicle-mounted terminal for the user to select. Or the vehicle and the user terminal perform data interaction, and the vehicle control unit receives the discharge type signal sent by the user terminal. A discharge type signal confirmation knob, a key, a gear, and the like may be provided on the vehicle to allow the user to select the discharge type signal.

S109: the vehicle-mounted charger acquires a target resistance signal by using the second resistance signal detection module and acquires a target discharge control signal by using the second control signal detection module.

S111: and the vehicle-mounted charger determines the target type of the discharge mode according to the target resistance signal, the target discharge control signal and the discharge type signal.

Specifically, the vehicle-mounted charger performs recheck according to the target resistance signal and the target discharge control signal, and confirms that discharge is performed to the outside according to the target resistance signal and the target discharge control signal. And confirming the target type of the discharge mode according to the discharge type signal.

S113: and the vehicle-mounted charger controls the second control signal sending module to carry out a signal interaction mode corresponding to the target type of the discharge mode on the load according to the target type of the discharge mode so as to control the load to be charged.

Before the vehicle-mounted charger discharges the load, data interaction can be carried out with the load first to confirm that the load is charged. Before charging with different loads, the information interaction mode with the vehicle-mounted charger is different. The vehicle-mounted charger can control the second control signal sending module to carry out a signal interaction mode corresponding to the target type of the discharging mode on the load according to the target type of the discharging mode so as to control the load to be charged.

In the embodiment, voltage signals at two ends of the resistor are monitored through the vehicle-end communication controller; the vehicle-end communication controller determines to enter a discharging mode according to voltage signals at two ends of the resistor, and sends awakening information to a vehicle-mounted charger; the vehicle-end communication controller simulates a target resistance signal by using the resistance signal sending module and sends the target resistance signal to the vehicle-mounted charger, and simulates a target discharge control signal by using the first control signal sending module and sends the target discharge control signal to the vehicle-mounted charger; the vehicle-mounted charger acquires a discharge type signal sent by the vehicle control unit; the vehicle-mounted charger determines the target type of the discharge mode according to the target resistance signal, the target discharge control signal and the discharge type signal; the vehicle-mounted charger controls the second control signal sending module to perform a signal interaction mode corresponding to the target type of the discharge mode on the load through the socket according to the target type of the discharge mode so as to control the load to be charged, so that power can be supplied to various types of loads, the discharge function of the new energy automobile is expanded, and the user experience is improved.

In some embodiments, as shown in fig. 5, the S113 step: the controlling, by the vehicle-mounted charger, the second control signal sending module to perform, according to the target type of the discharge mode, a signal interaction manner corresponding to the target type of the discharge mode to the load, so as to control charging of the load may include:

s1111: when the target type of the discharging mode is discharging the household appliance, the vehicle-mounted charger discharges the household appliance.

Specifically, the home appliance may be a home appliance such as a cellular phone, an in-vehicle refrigerator, a fan, or the like. When the target type of the discharging mode is the household appliance, the vehicle-mounted charger discharges the household appliance.

S1113: when the target type of the discharging mode is discharging to the target vehicle, the vehicle-mounted charger sends a first target discharging signal to the target vehicle by using the second control signal sending module so as to perform discharging confirmation with the target vehicle and discharge the target vehicle.

Specifically, the first target discharging signal may be a CP PWM (Pulse Width Modulation) signal with a first preset duty ratio, and when the target vehicle is charged, the signal before charging may be confirmed according to the CP signal with the first preset duty ratio. When the target type of the discharging mode is discharging to the target vehicle, a first target discharging signal is sent to the target vehicle, discharging confirmation is carried out on the target vehicle, and discharging is carried out on the target vehicle.

S1115: when the target type of the discharging mode of the vehicle-mounted charger is a household or power grid discharging type, the second control signal sending module is used for sending a second target discharging signal to the household or power grid so as to confirm discharging with the household or power grid and discharge the household or power grid.

Specifically, the second target discharge signal may be a CP PWM signal or a PLC (Power Line Carrier) signal of a second preset duty ratio. And when the target type of the discharging mode is a household or power grid discharging type, the vehicle-mounted charger sends a second target discharging signal to the household or power grid so as to perform discharging confirmation with the household or power grid and discharge the household or power grid.

In some embodiments, as shown in fig. 6, the method may further include:

s201: and the vehicle-end communication controller determines to enter a charging mode according to voltage signals at two ends of the resistor.

Specifically, the vehicle-end communication controller receives a resistance signal sent by the charging gun through the socket, and may preset a voltage value at two ends of the resistance as a basis for determining whether to perform charging and discharging, for example, when the vehicle-end communication controller monitors that the voltage values at two ends of the resistance in the resistance signal are b, d, and f, it is determined that the charging mode is entered.

S203: the vehicle-end communication controller controls the first control switch to be closed and controls the second control switch to be opened, the first control signal detection module is used for monitoring the charging control signal, and the type of the charging and discharging control signal is determined.

Specifically, when it is determined that the charging mode is entered, the type of the charging control signal may include a first type of charging control signal and a second type of charging control signal. The charging control signals in the present application can be divided into two types according to the duty ratio, one type is power line carrier charging control signals (i.e. first type charging control signals), and the other type is pulse width modulation charging control signals (second type charging control signals). The first type of charging control signal represents a first part of signals corresponding to a first area standard, and the second type of charging control signal represents a second part of signals corresponding to the first area standard and signals corresponding to a second area standard. For example, the first type of charging control signal may be a power line carrier communication signal having a duty ratio of any value between 3% and 7%, and the second type of charging control signal may be a square wave signal having an effective duty ratio value of a duty ratio of 8% or more.

S205: when the charging control signal is the first type charging control signal, the vehicle-end communication controller simulates a target resistance signal by using the resistance signal sending module and sends the target resistance signal to the vehicle-mounted charger, and the first control signal sending module simulates the target first type charging control signal and sends the target first type charging control signal to the vehicle-mounted charger.

S207: and the vehicle-mounted charger controls a second switch in the second control module to be closed according to the target resistance signal and the target first type charging control signal.

S209: when monitoring that the second switch is closed, the vehicle-end communication controller controls the first switch in the first control module to be closed, and controls the vehicle-mounted charger to carry out alternating current charging.

Specifically, the vehicle-end communication controller may determine whether the second switch is closed according to a voltage change, for example, when the second switch is open, the voltage is 9V, and after the second switch is closed, the voltage is 6V, and the vehicle-end communication controller may determine whether the second switch is closed according to the monitored voltage change.

In the embodiment, the vehicle-end communication controller determines whether to enter the discharging mode or the charging mode according to the voltage signal at the two ends of the resistor, determines the type of the charging control signal when determining to enter the charging mode, when the charging control signal is a first-type charging control signal, a target resistance signal is simulated by the resistance signal sending module and sent to the vehicle-mounted charger, a target first-type charging control signal is simulated by the first control signal sending module and sent to the vehicle-mounted charger, the vehicle-mounted charger controls a second switch in the second control module to be closed according to the target resistance signal and the target first-type charging control signal, and when the vehicle-end communication controller monitors that the second switch is closed, the first switch in the first control module is controlled to be closed, the vehicle-mounted charger is controlled to carry out alternating current charging, and charging and discharging compatibility can be achieved, and the charging and discharging compatibility is compatible with signals corresponding to different regional standards.

In some embodiments, after the vehicle-end communication controller determines to enter the charging mode according to the voltage signal across the resistor, the method may further include:

vehicle end communication controller carries out signal communication with filling electric pile to carry out the signal with filling electric pile and shake hands. Through carrying out the signal through car end communication controller and filling between the electric pile and shaking hands, can guarantee the security of charging.

In some embodiments, after the vehicle-end communication controller receives the charging control signal by using the first charging control signal detection module and determines the type of the charging control signal, the method may further include:

and when the charging control signal is a second type charging control signal, the vehicle-end communication controller controls a first switch in the first control module to be closed and controls the battery management system to carry out direct-current charging.

Specifically, when the charging control signal is the second type charging control signal, the vehicle-end communication controller controls the first switch in the first control module to be closed, and when the direct-current charging is performed, after the first switch is closed, the vehicle-end communication controller can perform direct-current charging control through the battery management system.

According to the embodiment, the vehicle-end communication controller determines to enter the charging mode according to voltage signals at two ends of the resistor, and further determines the type of the charging control signal, when the charging control signal is the second type of charging control signal, the first switch in the first control module is controlled to be closed, the battery management system is controlled to perform direct-current charging, and the compatibility of alternating current and direct current charging and discharging can be achieved, and the compatibility with signals corresponding to different regional standards can be achieved.

In the embodiment, the voltage signals at two ends of the resistor are monitored through the vehicle-end communication controller; the vehicle-end communication controller determines to enter a discharging mode according to voltage signals at two ends of the resistor, and sends awakening information to a vehicle-mounted charger; the vehicle-end communication controller simulates a target resistance signal by using the resistance signal sending module and sends the target resistance signal to the vehicle-mounted charger, and simulates a target discharge control signal by using the first control signal sending module and sends the target discharge control signal to the vehicle-mounted charger; the vehicle-mounted charger acquires a discharge type signal sent by the vehicle control unit; the vehicle-mounted charger determines the target type of the discharge mode according to the target resistance signal, the target discharge control signal and the discharge type signal; the vehicle-mounted charger controls a second control signal sending module to carry out a signal interaction mode corresponding to the target type of the discharge mode on a load according to the target type of the discharge mode so as to control the load to be charged; the vehicle-end communication controller determines whether to enter a discharging mode or a charging mode according to voltage signals at two ends of the resistor, determines the type of a charging control signal along with the charging control signal when determining to enter the charging mode, simulates a target resistance signal by using the resistance signal sending module and sends the target resistance signal to the vehicle-mounted charger when the charging control signal is a first type of charging control signal, simulates a target first type of charging control signal by using the first control signal sending module and sends the target first type of charging control signal to the vehicle-mounted charger, the vehicle-mounted charger controls a second switch in the second control module to be closed according to the target resistance signal and the target first type of charging control signal, and when receiving the second switch, the vehicle-end communication controller controls the first switch in the first control module to be closed and controls the vehicle-mounted charger to carry out alternating current charging; the charging mode is determined to enter through the vehicle-end communication controller according to voltage signals at two ends of the resistor, the type of the charging and discharging control signal is further determined, when the charging and discharging control signal is the second type of charging control signal, the first switch in the first control module is controlled to be closed, the battery management system is controlled to conduct direct-current charging, power supply for various types of loads can be achieved, the discharging function of the new energy automobile is expanded, the alternating-current and direct-current charging compatibility of the new energy automobile is improved, and the compatibility of charging piles meeting different regional standards is improved.

In the description provided herein, numerous specific details are set forth. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.

Similarly, it should be appreciated that in the foregoing description of exemplary embodiments of the invention, various features of the invention are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure and aiding in the understanding of one or more of the various inventive aspects. However, the disclosed method should not be interpreted as reflecting an intention that: that the invention as claimed requires more features than are expressly recited in each claim. Rather, as the following claims reflect, inventive aspects lie in less than all features of a single foregoing disclosed embodiment. Thus, the claims following the detailed description are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate embodiment of this invention.

Those skilled in the art will appreciate that the modules in the device in an embodiment may be adaptively changed and disposed in one or more devices different from the embodiment. The modules or units or components of the embodiments may be combined into one module or unit or component, and furthermore they may be divided into a plurality of sub-modules or sub-units or sub-components. All of the features disclosed in this specification (including any accompanying claims, abstract and drawings), and all of the processes or elements of any method or apparatus so disclosed, may be combined in any combination, except combinations where at least some of such features and/or processes or elements are mutually exclusive. Each feature disclosed in this specification (including any accompanying claims, abstract and drawings) may be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise.

Furthermore, those skilled in the art will appreciate that although embodiments described herein include some features included in other embodiments, not other features, combinations of features of different embodiments are meant to be within the scope of the invention and form different embodiments. For example, in the claims of the present invention, any of the claimed embodiments may be used in any combination.

The present invention may also be embodied as apparatus or system programs (e.g., computer programs and computer program products) for performing a portion or all of the methods described herein. Such programs implementing the present invention may be stored on computer-readable media or may be in the form of one or more signals. Such a signal may be downloaded from an internet website, provided on a carrier signal, or provided in any other form.

It should be noted that the above-mentioned embodiments illustrate rather than limit the invention, and that those skilled in the art will be able to design alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps or the like not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The invention may be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. In the unit claims enumerating several systems, several of these systems may be embodied by one and the same item of hardware. The usage of the words first, second and third, etcetera do not indicate any ordering and these words may be interpreted as names.