Charging system

Abstract

The utility model relates to a charging system which comprises a power supply end and an equipment end, and the power supply end and the equipment end are connected through a charging cable. The power supply end comprises a commercial power output end and a charging pile output end, the commercial power output end is used for providing commercial power, and the charging pile output end is used for providing charging pile voltage; the equipment end comprises a voltage input interface which is used for identifying the commercial power and the charging pile voltage and controlling the power supply end to output the commercial power and / or the charging pile voltage to the equipment end; and the equipment end is also used for controlling the power supply end to stop outputting the three-phase alternating current and controlling the power supply end to output the single-phase alternating current to the equipment end. According to the scheme, charging of the commercial power and the charging pile is compatible, three-phase alternating current charging and single-phase alternating current charging can be switched, the charging modes are diversified, and the user experience is good.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automobiles, in particular to a charging system. BACKGROUND

[0002] With the maturity of energy storage technology, the application scenarios and application methods of energy storage are also increasing, and mobile energy storage is one of many energy storage solutions. Mobile energy storage is movable and convenient during use, and the use time and use scenario are not fixed. If a single charging method is used, it is difficult to charge as soon as possible after the power is consumed, and the user experience is poor.

[0003] In view of the above problems, the technical personnel in the field have been seeking solutions. CONTENT OF THE UTILITY MODEL

[0004] The technical problem to be solved by the present application is to provide a charging system in view of the defects of the prior art.

[0005] In order to achieve the above purpose, the present application is realized by the following technical scheme:

[0006] The present application provides a charging system, comprising: a power supply end and a device end, the power supply end and the device end are connected through a charging cable;

[0007] The power supply end comprises a commercial power output end and a charging pile output end, the commercial power output end is used for providing the commercial power, and the charging pile output end is used for providing the charging pile voltage;

[0008] The device end comprises a voltage input interface, which is used for identifying the commercial power and the charging pile voltage, and controlling the power supply end to output the commercial power and / or the charging pile voltage to the device end;

[0009] The device end is further used for controlling the power supply end to stop outputting three-phase alternating current and controlling the power supply end to output single-phase alternating current to the device end.

[0010] Optionally, the device end comprises a charger, and the charger is electrically connected with the voltage input interface;

[0011] The charger is further used for identifying the commercial power and the charging pile voltage when the device end is connected with the power supply end, and executing a corresponding charging mode according to the identification result.

[0012] Optionally, the charger is further used for detecting the alternating voltage of the voltage input interface, and determining the commercial power charging mode or the charging pile charging mode of the device end according to the detection result.

[0013] Optionally, the charger is further configured to control the input voltage of the device end to be less than or equal to the smaller value of the maximum voltage allowed by the charger and the maximum voltage allowed by the power supply when the device end is in the power supply charging mode.

[0014] or control the input voltage of the device end to be less than or equal to the smaller value of the maximum voltage allowed by the charger and the maximum voltage allowed by the charging pile when the device end is in the charging pile charging mode.

[0015] Optionally, the power supply output end and the charging pile output end are further configured to output any one of three-phase alternating current and single-phase alternating current to the voltage input interface.

[0016] Optionally, the charger comprises a three-phase charger and a single-phase charger.

[0017] The three-phase charger is configured to control the power supply end to output three-phase alternating current to charge the device end when the power of the device end is less than a preset power threshold.

[0018] The single-phase charger is configured to control the power supply end to output single-phase alternating current to charge the device end when the power of the device end reaches the preset power threshold.

[0019] Optionally, the device end further comprises a controller.

[0020] The controller and the charger are connected through a CAN line, and the controller is electrically connected with the voltage input interface.

[0021] The controller is configured to perform plug-in detection when the device end is electrically connected with the charging pile output end, and enter the charging pile charging mode when the plug-in is normal.

[0022] The charger is further configured to output charging information to the controller after entering the charging pile charging mode.

[0023] The controller is further configured to control the charging pile output end to charge the device end according to the charging information.

[0024] Optionally, the device end further comprises a charging switch, one end of the charging switch is connected with the device end battery, and the other end of the charging switch is connected with the charger.

[0025] The controller is further configured to control the charging switch to be on or off according to the charging information.

[0026] Optionally, the voltage input interface further comprises a connection confirmation interface.

[0027] The controller is further configured to perform plug-in detection when the connection confirmation interface of the voltage input interface is electrically connected with the connection confirmation interface of the charging pile output end.

[0028] Optionally, the voltage input interface further comprises a charging control interface.

[0029] The charger is further configured to control the input voltage of the device end through the charging control interface.

[0030] The present application provides a charging system compatible with mains and charging piles, and capable of switching between three-phase alternating current and single-phase alternating current charging, thus providing various charging modes and good user experience.

[0031] In order to make the above and other purposes, features and advantages of the present application more apparent and easy to understand, the following preferred embodiments are described in detail below, and the accompanying drawings are described as follows. BRIEF DESCRIPTION OF DRAWINGS

[0032] The present application will be described in detail below in combination with the accompanying drawings and specific embodiments.

[0033] Figure 1 is a structural schematic diagram of a charging system provided by an embodiment of the present application. DETAILED DESCRIPTION

[0034] It should be understood that the specific embodiments described herein are only used to explain the present application and do not limit the present application.

[0035] Figure 1 is a structural schematic diagram of a charging system provided by an embodiment of the present application, please refer to Figure 1 The present application provides a charging system, comprising: a power supply end and a device end, the power supply end and the device end being connected through a charging cable.

[0036] The power supply end comprises a mains output end XP2 and a charging pile output end XP1, the mains output end XP2 being configured to provide mains, and the charging pile output end XP1 being configured to provide a charging pile voltage.

[0037] In the embodiment, the mains output end XP2 meets GB / T 20234.2, and the other end of the connecting cable can be connected to a power grid through a connecting terminal or a connector or a socket; the charging pile output end XP1 is an alternating current charging gun of a charging pile, which meets GB / T 20234.2.

[0038] The device end comprises a voltage input interface XS1 configured to identify mains and charging pile voltages and control the power supply end to output mains and / or charging pile voltages to the device end.

[0039] The device end is further configured to control the power supply end to stop outputting three-phase alternating current and control the power supply end to output single-phase alternating current to the device end when the power of the device end reaches a preset power threshold.

[0040] Optionally, the device end comprises a charger PCS, the charger PCS being electrically connected with the voltage input interface XS1.

[0041] The charger PCS is also configured to identify the mains voltage and the charging pile voltage when the device end is connected to the power supply end, and perform a corresponding charging mode according to the identification result.

[0042] Optionally, the charger PCS is also configured to detect the alternating voltage of the voltage input interface XS1, and determine the mains charging mode or the charging pile charging mode of the device end according to the detection result.

[0043] Optionally, the charger PCS is also configured to control the input voltage of the device end to be less than or equal to the smaller value of the maximum voltage allowed by the charger PCS and the maximum voltage allowed by the mains when the device end is in the mains charging mode.

[0044] Or control the input voltage of the device end to be less than or equal to the smaller value of the maximum voltage allowed by the charger PCS and the maximum voltage allowed by the charging pile when the device end is in the charging pile charging mode.

[0045] In this embodiment, the charger PCS performs different work and protection according to different charging modes by identifying whether it is mains charging or charging pile charging. Specifically, when the charger PCS has executed the sending of the charging request instruction and detects that the alternating voltage of the voltage input interface XS1 is greater than a preset voltage value, it is determined that the device end is in the charging pile charging mode at this time, and the charger PCS will limit the size of the input current, that is, the smaller value of the maximum current allowed by the charger PCS and the maximum current allowed by the charging pile.

[0046] When the charger PCS has not executed the sending of the charging request instruction and detects that the alternating voltage of the voltage input interface XS1 is greater than a preset voltage value, it is determined that the device end is in the mains charging mode at this time, and the charger PCS will limit the input current, that is, the smaller value of the maximum current allowed by the charger PCS and the maximum current allowed by the mains.

[0047] Optionally, the mains output end XP2 and the charging pile output end XP1 are also configured to output any one of three-phase alternating current and single-phase alternating current to the voltage input interface XS1.

[0048] Optionally, the charger PCS includes a three-phase charger and a single-phase charger.

[0049] The three-phase charger is configured to control the power supply end to output three-phase alternating current to charge the device end when the power of the device end is less than a preset power threshold, and the single-phase charger is configured to control the power supply end to output single-phase alternating current to charge the device end when the power of the device end reaches the preset power threshold.

[0050] In an embodiment, according to the design needs of the user, the mains output end XP2 and the charging pile output end XP1 can be an alternating current single-phase and / or three-phase interface.

[0051] The commercial power can be divided into single-phase and three-phase, the single-phase commercial power is connected to L1 / N, and the three-phase commercial power is connected to L1 / L2 / L3 / N. The commercial power is inserted into the charging seat at the equipment end through the charging gun to charge.

[0052] The charging pile is connected according to the single-phase and three-phase standard connection mode in the market; the charging gun is inserted into the charging seat at the equipment end, the CP and PD signals enter the controller EVCC, and the control guide work is required according to GB / T 18487.1.

[0053] In this embodiment, the equipment end obtains the power information of the battery in real time, according to the rated voltage, rated current and rated power of the battery at the equipment end, a power threshold is preset, when the power of the equipment end is less than the preset power threshold, three-phase alternating current is used for charging, when the power of the equipment end reaches the preset power threshold, single-phase alternating current is used for charging, based on this, the power loss in the charging process can be reduced, further avoiding the damage of the battery caused by the too large charging voltage, and prolonging the service life of the battery.

[0054] Optionally, the equipment end further comprises a controller EVCC, the controller EVCC and the charger PCS are connected through a CAN line, and the controller EVCC is electrically connected with the voltage input interface XS1. The controller EVCC is used for plug-in detection when the equipment end is electrically connected with the output end XP1 of the charging pile, and entering the charging mode of the charging pile when the plug-in is normal; the charger PCS is further used for outputting charging information to the controller EVCC after entering the charging mode of the charging pile, and the controller EVCC is further used for controlling the output end XP1 of the charging pile to charge the equipment end according to the charging information.

[0055] Optionally, the equipment end further comprises a charging switch, one end of the charging switch is connected with the battery at the equipment end, and the other end of the charging switch is connected with the charger PCS; the controller EVCC is further used for controlling the charging switch to be on or off according to the charging information.

[0056] Optionally, the voltage input interface XS1 further comprises a connection confirmation interface, and the controller EVCC is further used for plug-in detection when the connection confirmation interface of the voltage input interface XS1 is electrically connected with the connection confirmation interface of the output end XP1 of the charging pile.

[0057] Optionally, the voltage input interface XS1 further comprises a charging control interface, and the charger PCS is further used for controlling the input voltage of the equipment end through the charging control interface.

[0058] In the embodiment, the EVCC is a controller of the mobile energy storage end, mainly used for the control and guidance functions of charging with the charging pile; and interacts with the charger PCS to complete the start, stop and power demand of charging. Specifically, when the charger PCS establishes a connection with the charging pile, the equipment end can be normally charged. When the charging pile detects the plug-in, the plug-in is normal (i.e., the plug-in is in an undamaged state and the plug-in establishes an electrical connection with the equipment end), the charger PCS can send a charging request, the controller EVCC receives the charging request and obtains the highest allowable charging current value of the equipment end (in the embodiment, the rated current value corresponding to the charger PCS is taken as the highest allowable charging current value of the controller EVCC), and then the controller EVCC closes the charging switch to make the equipment end start charging. When the charger PCS sends a stop request, the controller EVCC receives the stop request and disconnects the charging switch, and then the equipment end stops charging.

[0059] The CP signal is mainly used for AC charging piles. The charging pile and the automobile can only communicate through the CP signal to judge and control the charging current and the state. The automobile charging pile CP signal is a signal for controlling the charging current. During the charging of the electric vehicle, the charging pile generates a CP signal, which is transmitted to the vehicle through the communication line between the vehicle charging socket and the vehicle to control the charging current of the electric vehicle. The CP signal corresponds to several states of the charging gun, such as unplugging, plugging, charging preparation, charging start and stopping charging, and is mainly used for monitoring the interaction between the charging pile and the new energy automobile, which is a handshake signal between the automobile and the charging pile.

[0060] The CP signal can prevent overload and short circuit between the vehicle and the charging pile, and protect the safety of the charging equipment and the electric vehicle. When the charging pile detects that the battery of the vehicle is full or has other problems, it will automatically send a CP signal to the vehicle-mounted charger to stop charging, so as to protect the battery and the charging equipment from being damaged.

[0061] The application provides a charging system compatible with commercial power and charging piles, and capable of switching between three-phase AC charging and single-phase AC charging, so that the charging mode is various and the user experience is good.

[0062] Obviously, those skilled in the art can make various modifications and variations to the utility model without departing from the spirit and scope of the application. Thus, if these modifications and variations of the application belong to the scope of the claims of the application and their equivalent technologies, the application also intends to include these modifications and variations. The technical features of the above-described embodiments can be combined arbitrarily. In order to make the description concise, all possible combinations of the technical features in the above-described embodiments are not described, however, as long as the combinations of the technical features do not exist contradictory, they should be considered as the scope of the description.

[0063] The above merely provides preferred embodiments of the present application, and is not used to limit the present application, and any modification, equivalent replacement or improvement made in the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A charging system, characterized by, The utility model relates to a power supply end and equipment end are connected through charging cable, The power supply end includes AC output end and charging pile output end, the AC output end is used to provide the AC, and the charging pile output end is used to provide the charging pile voltage, The equipment end includes voltage input interface, is used to identify the AC and the charging pile voltage, and controls the power supply end output AC and / or charging pile voltage to the equipment end, The equipment end is also used to control the power supply end to stop outputting three-phase alternating current, and control the power supply end to output single-phase alternating current to the equipment end. The equipment end includes charger, and the charger is electrically connected with the voltage input interface, 2. The system of claim 1, wherein, The charger is also used to identify the AC and the charging pile voltage when the equipment end is connected with the power supply end, and execute corresponding charging mode according to the identification result. The charger is also used to detect the alternating voltage of voltage input interface, and determine the AC charging mode or charging pile charging mode of the equipment end according to the detection result.

3. The system of claim 2, wherein, The charger is also used to control the input voltage of the equipment end to be less than or equal to the smaller value of the maximum voltage allowed by the charger and the maximum voltage allowed by the AC when the equipment end is in the AC charging mode, 4. The system of claim 3, wherein, Or control the input voltage of the equipment end to be less than or equal to the smaller value of the maximum voltage allowed by the charger and the maximum voltage allowed by the charging pile when the equipment end is in the charging pile charging mode. The AC output end and the charging pile output end are also used to output any of three-phase alternating current, single-phase alternating current to the voltage input interface.

5. The system of any one of claims 2-4, wherein, The charger includes three-phase charger and single-phase charger, 6. The system of claim 5, wherein, The three-phase charger is used to control the power supply end to output three-phase alternating current to charge the equipment end when the power of the equipment end is less than the preset power threshold, The single-phase charger is used to control the power supply end to output single-phase alternating current to charge the equipment end when the power of the equipment end reaches the preset power threshold. The equipment end also includes a controller, 7. The system of claim 2, wherein, The controller and the charger are connected through CAN line, and the controller is electrically connected with the voltage input interface, The controller is used to perform gun insertion detection when the equipment end is electrically connected with the charging pile output end, and enter the charging pile charging mode when the gun insertion is normal, The charger is also used to output charging information to the controller after entering the charging pile charging mode, The controller is also used to control the charging pile output end to charge the equipment end according to the charging information. The equipment end also includes a charging switch, one end of the charging switch is connected with the equipment end battery, and the other end of the charging switch is connected with the charger, 8. The system of claim 5, wherein, The controller is also used to control the charging switch to be on or off according to the charging information. The voltage input interface also includes a connection confirmation interface, 9. The system of claim 6, wherein, The controller is also used to perform gun insertion detection when the connection confirmation interface of the voltage input interface is electrically connected with the connection confirmation interface of the charging pile output end. The voltage input interface also includes a charging control interface, 10. The system of claim 5, wherein, The charger is also used to control the input voltage of the equipment end through the charging control interface. ​

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