WO2019037072A1 - 一种直流充电设备 - Google Patents
一种直流充电设备 Download PDFInfo
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- WO2019037072A1 WO2019037072A1 PCT/CN2017/099006 CN2017099006W WO2019037072A1 WO 2019037072 A1 WO2019037072 A1 WO 2019037072A1 CN 2017099006 W CN2017099006 W CN 2017099006W WO 2019037072 A1 WO2019037072 A1 WO 2019037072A1
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- charging
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
Definitions
- the present invention relates to the field of charging devices, and more particularly to a DC charging device.
- the AC charging pile usually outputs one-way or three-way alternating current, but the alternating current outputted by the on-board charger is converted into direct current to further power the vehicle battery.
- the charging power is small (for example, 7KW or 22KW), so that the charging speed of the electric vehicle is slow.
- DC charging piles can directly supply DC power to the vehicle battery.
- a charging station installed next to a highway is a DC charging pile.
- the existing DC charging pile can output a large amount of power (for example, 60 KW or 200 KW)
- the pile body is bulky, and is often powered by a high-power charger.
- the DC charging pile carries a plurality of alternating currents -
- the direct current (AC-DC) power module results in a generally high cost of construction.
- the technical problem to be solved by the present invention is to provide a DC charging device, which can improve the utilization rate of the charger and adjust the charging current on the charging gun in real time to reduce the cost of the charger.
- an embodiment of the present invention provides a DC charging device, where the DC charging device includes a signal processor, a switch controller, a plurality of power supply devices, and a plurality of charging guns;
- the signal processor is respectively connected to the plurality of charging guns and the switch controller, and the plurality of power supply devices are connected to the plurality of charging guns through the switch controller;
- the signal processor generates a switch control command according to the working state information corresponding to the plurality of charging guns, and sends the switch control command to the switch controller, and the switch controller according to the switch control command Adjusting an electrical connection relationship between the plurality of power supply devices and the plurality of charging guns;
- Each of the plurality of power supply devices is a DC charger with constant current output, and the maximum current of each DC charger is a fixed current threshold;
- the maximum carrying current of each of the plurality of charging guns is greater than or equal to a sum of fixed current thresholds output by the power supply devices.
- the switch controller includes a plurality of switch components and a DC charging bus, and the switch component includes a first control switch, a second control switch, and a third control switch;
- Each of the plurality of power supply devices is respectively connected to the first end of the first control switch of each switch component, and each of the charging guns and the second control switch of each of the switch components respectively One end one-to-one correspondence;
- one power supply device is connected to a first end of a first control switch, and one charging gun is connected to a first end of a second control switch;
- the second end of the first control switch is connected to the second end of the second control switch, and the first end of the third control switch and the first control switch One end is connected, and the second end of the third control switch is connected to the first end of the second control switch, and the second end of the first control switch is connected to the DC charging bus.
- the signal processor when the signal processor receives the charging request command sent by the target charging gun, the signal processor detects the number of charging guns in an idle state and the charging in an occupied state. a ratio of the number of guns, and generating a fast charge command corresponding to the target charging gun when the ratio satisfies a fast charge condition, and transmitting the fast charge command to the switch controller, the switch controller according to The fast charge command connects at least two power supply devices to the target charging gun to perform a fast charging operation on the target charging gun;
- the switch controller determines that the first power supply device and the at least one second power supply device supply power to the target charging gun according to the fast charge command, and the switch controller adjusts each second power supply device according to the fast charge command.
- Corresponding switch components respectively, to disconnect the connection between the second power supply devices and the corresponding charging guns, and establish a connection relationship between the second power supply devices and the DC charging bus;
- the switch controller adjusts a switch component corresponding to the first power supply device according to the fast charge command to establish a connection relationship between the first power supply device and the target charging gun, and establish the first power supply a connection relationship between the device and the DC charging bus;
- the first power supply device is a power supply device connected to the target charging gun through a switch assembly, and the second power supply device is through the two switch components and the target a power supply device for connecting the charging gun;
- the maximum carrying current of the second control switch in each of the switch components is greater than or equal to a sum of fixed current thresholds output by the power supply devices;
- the maximum carrying current of the charging busbar is greater than or equal to a sum of fixed current thresholds output by the power supply devices.
- the signal processor when the signal processor receives the charging request command sent by the target charging gun, the signal processor detects a ratio of the number of charging guns in an idle state to the number of charging guns in an occupied state, And generating a slow charge command corresponding to the target charging gun when the ratio satisfies the slow charge condition, and transmitting the slow charge command to the switch controller, the switch controller and the target charging gun Corresponding power supply device is connected to the target charging gun to perform a slow charging operation on the target charging gun;
- the switch controller adjusts a switch component corresponding to the target charging gun according to the slow charge command to disconnect a power supply device corresponding to the target charging gun and the DC charging bus, and establish a connection relationship a connection relationship between the power supply device corresponding to the target charging gun and the target charging gun.
- the signal processor, the switch controller, the plurality of power supply devices, and the plurality of charging guns Forming a DC charging device
- the signal processor may generate a switch control command according to the working state information corresponding to the plurality of charging guns, and send the switch control command to the switch controller, the switch controller Adjusting an electrical connection relationship between the plurality of power supply devices and the plurality of charging guns according to the switch control command, thereby adjusting a charging current on each charging gun, and improving utilization of the charging device, Reduce the cost of the charger.
- FIG. 1 is a schematic structural diagram of a DC charging device according to an embodiment of the present invention.
- FIG. 2 is a schematic structural diagram of another DC charging device according to an embodiment of the present invention.
- FIG. 3 is a schematic structural diagram of a switch assembly according to an embodiment of the present invention.
- FIG. 4 is a schematic structural diagram of still another DC charging device according to an embodiment of the present invention.
- FIG. 1 is a schematic structural diagram of a DC charging device according to an embodiment of the present invention.
- the DC charging device 1 includes: a signal processor 10, a switch controller 20, a plurality of power supply devices 30 and a plurality of charging guns 40;
- the signal processor 10 is respectively connected to the plurality of charging guns 40 and the switch controller 20, and the plurality of power supply devices 30 are connected to the plurality of charging guns 40 through the switch controller 20;
- the signal processor 10 generates a switch according to the working state information corresponding to the plurality of charging guns 40. Controlling an instruction, and transmitting the switch control command to the switch controller 20, the switch controller 20 is between the plurality of power supply devices 30 and the plurality of charging guns 40 according to the switch control command The electrical connection relationship is adjusted;
- the signal processor 10 may receive a charging request sent by the target charging gun (the target charging gun may be any one of the plurality of charging guns 40 in the embodiment corresponding to FIG. 1). And instructing, according to the charging request instruction, detecting the working state information corresponding to the plurality of charging guns 40, further generating a fast charging command corresponding to the target charging gun, and transmitting the fast charging command to the switch
- the controller 20 is configured to enable the switch controller 20 to select at least two power supply devices 30 among the plurality of power supply devices 30 to be connected to the target charging gun according to the fast charge command to fast charge the target charging gun operating;
- the signal processor 10 may further detect the working state information corresponding to the plurality of charging guns 40 according to the charging request command when receiving the charging request command sent by the target charging gun, and further generate and a slow charging command corresponding to the target charging gun, and sending the slow charging command to the switch controller 20, so that the switch controller pairs the plurality of power supply devices 30 and the The electrical connection relationship between the plurality of charging guns 40 is adjusted to perform a slow charging operation on the target charging gun.
- the DC charging device 1 can be applied to a ground charging pile that provides power resources for a new energy vehicle to further control the switch controller 20 according to the working state information corresponding to each charging gun 40 in the actual application.
- the dynamic power distribution is realized, and the group ground power supply device is further formed, thereby adjusting the charging current on the target charging gun in real time to improve the utilization rate of each small power charger in each power supply device 30.
- the signal processor 10 in the DC charging device 1 is respectively connected to the plurality of charging guns 40 and the switch controller 20, and the plurality of power supply devices 30 pass through
- the switch controller 20 is connected to the plurality of charging guns 40; further, the signal processor first generates a switch control command according to the working state information corresponding to the plurality of charging guns; then, the signal processor 10 The switch control command is sent to the switch controller 20; finally, the switch controller 20 performs an electrical connection relationship between the plurality of power supply devices 30 and the plurality of charge guns 40 according to the switch control command. Adjustment. It can be seen that when the signal processor 10 receives the charging request command sent by the target charging gun, it may further be according to the working status of the plurality of charging guns 40.
- the information generates a fast charge command or a slow charge command corresponding to the target charging gun, and may further select at least two power supplies among the plurality of power supply devices 30 when the switch controller 20 receives the fast charge command
- the device 30 is connected to the target charging gun to perform a fast charging operation on the target charging gun; optionally, the switch controller 20 may further receive the DC charging device upon receiving the slow charging command
- Each power supply device 30 of 1 is connected to each charging gun 40 one-to-one to perform a slow charging operation on the target charging gun, thereby improving the utilization rate of the charging device, and further according to the working state information of each charging gun. Adjust the charging current on each charging gun in real time to reduce the cost of the charger.
- FIG. 2 is a schematic structural diagram of another DC charging device according to an embodiment of the present invention.
- the DC charging device includes the signal processor 10, the switch controller 20, the plurality of power supply devices 30, and the plurality of charging guns 40 in the embodiment corresponding to FIG. 1 above; wherein the switch The controller 20 includes: a plurality of switch components 201 and a DC charging bus 202;
- the switch component 201 includes a first control switch, a second control switch, and a third control switch.
- FIG. 3 is a switch component according to an embodiment of the present invention. Schematic diagram of the structure. As shown in FIG. 3, the switch assembly 201 includes a first control switch 2011, a second control switch 2012, and a third control switch 2013;
- the power supply devices 30 of the plurality of power supply devices 30 are respectively connected to the first ends of the first control switches 2011 of the switch components 201, and the charging guns 40 are respectively connected.
- the second end of the first control switch 2011 is connected to the second end of the second control switch 2012, and the first end of the third control switch 2013 is The first end of the first control switch 2011 is connected, and the second end of the third control switch 2013 is connected to the first end of the second control switch 2012, and the second end of the first control switch 2011 is The DC charging bus bars 202 are connected.
- the signal processor 10 when the signal processor 10 receives the charging request command sent by the target charging gun, the signal processor 10 detects the ratio of the number of the charging guns in the idle state to the number of the charging guns in the occupied state, and Generating a fast charge command corresponding to the target charging gun when the ratio satisfies a fast charge condition, and transmitting the fast charge command to the switch controller 20, the switch controller 20 Connecting at least two power supply devices 30 to the target charging gun according to the fast charge command to perform a fast charging operation on the target charging gun;
- the switch controller 20 may determine, according to the fast charge command, that the first power supply device and the at least one second power supply device supply power to the target charging gun, and the switch controller 20 adjusts each according to the fast charge command.
- the second power supply device respectively corresponds to the switch component 201 to disconnect the connection between the second power supply devices and the corresponding charging gun 40, and establish the second power supply device and the DC charging bus 202. Connection relationship
- the switch controller 20 can adjust the switch component 201 corresponding to the first power supply device according to the fast charge command to establish a connection relationship between the first power supply device and the target charging gun, and Establishing a connection relationship between the first power supply device and the DC charging bus 202;
- the first power supply device is a power supply device 30 connected to the target charging gun through a switch assembly 201
- the second power supply device is a power supply connected to the target charging gun through two switch assemblies 201. Device 30.
- the signal processor 10 may further detect, when receiving the charging request command sent by the target charging gun, a ratio of the number of charging guns in an idle state to the number of charging guns in an occupied state, and Generating a slow charge command corresponding to the target charging gun when the ratio satisfies the slow charge condition, and transmitting the slow charge command to the switch controller 20, the switch controller 20 corresponding to the target charging gun
- the power supply device 30 is connected to the target charging gun to perform a slow charging operation on the target charging gun;
- the switch controller 20 adjusts the switch component 201 corresponding to the target charging gun according to the slow charge command to disconnect the power supply device 30 corresponding to the target charging gun and the DC charging bus 202.
- the connection relationship is established, and a connection relationship between the power supply device 30 corresponding to the target charging gun and the target charging gun is established.
- each of the power supply devices 30 is a DC charger with constant current output, and the maximum current of each DC charger is a fixed current threshold;
- the maximum load current of the second control switch 2012 in each of the switch components 201 is greater than or equal to the sum of the fixed current thresholds output by the power supply devices 30; therefore, the second control switch 2012 can be avoided.
- the current is too large and causes damage.
- the maximum load current of the DC charging bus 202 is greater than or equal to the power supply devices.
- the maximum load current of each of the plurality of charging guns 40 is greater than or equal to the sum of the fixed current thresholds output by the power supply devices 30. Therefore, the plurality of power supply devices 30 can be simultaneously connected to When a single charging gun 40 supplies power to it, it does not cause damage due to excessive current.
- FIG. 4 is a schematic structural diagram of another DC charging device according to an embodiment of the present invention.
- each power supply device is connected to each charging gun through a switch controller, and the number of each power supply device and each charging gun is a one-to-one mode, that is, Na power supply devices correspond to Nb charging guns.
- Na power supply devices correspond to Nb charging guns.
- the Nth switch assembly 201 includes a first control switch KN1 , and a second Control switch K N2 , third control switch K N3 ;
- the first switch assembly 201 includes a first control switch K 11 , a second control switch K 12 , and a third control switch K 13 , that is, each switch assembly 201 can be used
- K I1 denotes a first control switch
- K i2 denotes a second control switch
- the ia power supply device can be used to indicate the Each of the plurality of power supply devices 30, and each of the plurality of charging guns 40 can be represented by an ib charging gun.
- the charging gun for example, the 1b charging gun
- the number of charging guns in the idle state (4) and the number of the charging guns in the occupied state can be checked according to the charging request sent by the 1b charging gun ( 1) ratio.
- the signal processor 10 can determine that the ratio satisfies the fast charge condition (ie, the ratio of the number of the charging guns in the idle state to the number of the charging guns in the occupied state is not zero), and thus the signal processor 10
- the fast charge command corresponding to the 1b charging gun can be further generated, and the fast charge command corresponding to the 1b charging gun is sent to the switch controller 20, so that the switch controller 20 can be idle according to the switch command.
- the four power supply devices (2a power supply device, 3a power supply device, 4a power supply device, 5a power supply device) and the power supply device (1a) corresponding to the 1b charging gun are synchronously connected to the 1b charging gun to perform 5x speed on the 1b charging gun. Fast charge operation.
- the switch processor 20 may further adjust each of the second power supply devices according to the fast charge command (specifically, 2a power supply device, 3a power supply device, 4a power supply device, 5a power supply device) respectively corresponding switch assembly 201 to further disconnect the connection relationship between the four power supply devices and the corresponding charging gun, and establish a connection relationship between the four power supply devices and the DC charging bus 202,
- the working state corresponding to the second control switch and the third control switch having a connection relationship with the idle four charging guns is adjusted to an off state, and the first control fast switching among the switch components having a connection relationship with the charging bus bar is
- the switch controller 20 can further adjust the switch assembly 201 corresponding to the first power supply device (1a power supply device), and establish a connection relationship between the 1a power supply device and the DC charging bus 202.
- Table 1 is a switch connection attribute corresponding to each switch component 201 in the power supply device;
- the switch processor 20 can be adjusted according to the fast charge command and each of the second power supply devices (4 idle)
- the switch controller 20 also adjusts the switch component 201 corresponding to the first power supply device (1a power supply device) according to the fast charge command, that is, the level on the first control switch corresponding to the 1a power supply device.
- the ratio of the number of the charging guns in the idle state to the number of the charging guns in the occupied state is not zero, for example, the ratio is an integer multiple of D.
- the signal processor can generate a fast charge command corresponding to the target charging gun, and send the fast charge command to the switch controller 20, and the switch controller 20 can adjust the closing and closing of the corresponding switch component 201.
- the opening attribute can further perform (D+1) times of fast charging on each charging gun in an occupied state.
- each power supply device is a low-power charging machine, and each low-power charging machine can pass the
- the DC charging bus 202 synchronously performs a fast charging operation on the target charging gun. Specifically, refer to the control of the internal switch unit 201 by the switch controller 20 given in Table 1 above, and details will not be repeated here.
- the signal processor 10 can receive the target charging gun (1b charging gun, 3b charging gun, 5b)
- the charging gun sends a charging command, and can control the switch controller 20 to charge the partial charging gun (for example, the 1b charging gun and the 3b charging gun) at a double speed according to the fast charging command (using the 1a power supply device and the 2a power supply device pair) 1b charging gun performs double-speed charging, and double-charging the
- the signal processor 10 can further be used when the other 4 charging guns are in an idle state, and the 5b charging gun is in an occupied state. Generating a fast charge command for the 5b charging gun to further perform a fast charge operation on the 5b charging gun; wherein, for the double speed charging of the 5b charging gun, further refer to the corresponding switch connection genus of each switch component corresponding to the above Table 1. , It will not be repeated here.
- the signal processor 10 in the DC charging device 1 is respectively connected to the plurality of charging guns 40 and the switch controller 20, and the plurality of power supply devices 30 pass through
- the switch controller 20 is connected to the plurality of charging guns 40; further, the signal processor 10 first generates a switch control command according to the operating state information corresponding to the plurality of charging guns 40; then, the signal processor 10 Transmitting the switch control command to the switch controller 20; finally, the switch controller 20 electrically connects the plurality of power supply devices 30 and the plurality of charge guns 40 according to the switch control command The relationship is adjusted.
- the signal processor 10 receives the charging request command sent by the target charging gun, the number of the charging devices in the idle state of the DC charging device 1 and the number of the charging devices in the occupied state can be further detected. a ratio between the two; if the ratio is zero, it is determined that the slow charging condition is satisfied, and therefore, each charging device 30 in the DC charging device 1 can be connected to each charging gun 40 one-to-one to charge the target
- the gun performs the operation; optionally, if the ratio is not zero, it is determined that the fast charge condition is satisfied, and therefore, the switch controller 20 can be connected to the at least two power supply devices 30 to the target charging gun.
- the target charging gun performs a fast charging operation, thereby improving the utilization rate of the charging device, and further adjusting the charging current on each charging gun according to the working state information of each charging gun to reduce the cost of the charging machine.
- the storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM), or a random access memory (RAM).
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Abstract
一种直流充电设备（1），所述直流充电设备（1）包括：信号处理器（10）、开关控制器（20）、多个供电装置（30）和多个充电枪（40）；所述信号处理器（10）分别与所述多个充电枪（40）以及所述开关控制器（20）连接，所述多个供电装置（30）通过所述开关控制器（20）与所述多个充电枪（40）连接；所述信号处理器（10）根据所述多个充电枪（40）对应的工作状态信息生成开关控制指令，并将所述开关控制指令发送至所述开关控制器（20），所述开关控制器（20）根据所述开关控制指令对所述多个供电装置（30）和所述多个充电枪（40）之间的电连接关系进行调整。可提高对充电机的利用率，并可进一步调节各充电枪上的充电电流，以降低充电机成本。
Description
本发明涉及充电装置领域，尤其涉及一种直流充电设备。
近年来，随着新能源汽车的迅猛发展，以及国家对节能、降耗等环保政策的强力支持，新能源汽车逐渐成长为发展速度最快的产业，与此同时，与这类新能源汽车(例如，电动汽车)配套的充电桩也相应地随之快速发展。
然而，伴随着新能源汽车尤其是纯电动轿车的普及，为这些新能源汽车的供电问题则演变为一个阻碍新能源汽车进一步发展的巨大障碍。比如，以地面充电桩为例，能否为新能源汽车提供足够的电量使得该新能源汽车具备远途旅程(即开出市)的动力资源，则更是眼下国家致力于去解决的问题。此外，由于地面充电桩受限于土地和电网的审核，通常采用一电一桩的充电模式，但该模式下的充电桩可分为交流充电桩和直流充电桩这两种；
比如，以安装在小区停车场内的交流充电桩为例，该交流充电桩通常输出单向或三向交流电，但需通过车载充电机将输出的交流电转变为直流电，才能进一步为车载电池进行供电，通常充电功率较小(例如，7KW或22KW)，以至于对电动汽车的充电速度较慢。
相对地，直流充电桩(也被称为非车载充电机)则可直接给车载电池进行直流供电，比如，安装在高速公路旁的充电站则为直流充电桩。虽然现有的直流充电桩可输出的功率较大(比如，60KW或200KW)，但其桩体体积庞大，且往往采用大功率的充电机进行供电，毕竟该直流充电桩内部携带多个交流-直流(AC-DC)电源模块，致使造价成本普遍偏高。尤其是在采用该一电一桩的充电模式时，若有N个充电枪，则需要对应有N个大功率充电机，且这N个充电机互不关联，且独立工作，当充电枪闲置的比较多时，则势必会造成对应的大功率充电机的闲置，进而造成资源浪费，即存在各大功率充电机的利用率较低的可能。
发明内容
本发明所要解决的技术问题在于，提供一种直流充电设备，可提高对充电机的利用率，并实时调节充电枪上的充电电流，以降低充电机成本。
为了解决上述技术问题，本发明实施例提供了一种直流充电设备，所述直流充电设备包括信号处理器、开关控制器、多个供电装置和多个充电枪；
所述信号处理器分别与所述多个充电枪以及所述开关控制器连接，所述多个供电装置通过所述开关控制器与所述多个充电枪连接；
所述信号处理器根据所述多个充电枪对应的工作状态信息生成开关控制指令，并将所述开关控制指令发送至所述开关控制器，所述开关控制器根据所述开关控制指令对所述多个供电装置和所述多个充电枪之间的电连接关系进行调整；
其中，所述多个供电装置中的各供电装置均为所述各供电装置均为恒流输出的直流充电机，且各直流充电机的最大电流均为固定电流阈值；
其中，所述多个充电枪中的各充电枪的最大承载电流大于或等于所述各供电装置输出的固定电流阈值之和。
其中，所述开关控制器包括多个开关组件以及直流充电母线，所述开关组件包括第一控制开关、第二控制开关、第三控制开关；
其中，所述多个供电装置中的各供电装置分别与各开关组件中的第一控制开关的第一端进行一一对应连接，各充电枪分别与各开关组件中的第二控制开关的第一端进行一一对应连接；一个供电装置连接一个第一控制开关的第一端，一个充电枪连接一个第二控制开关的第一端；
在任意一个开关组件中，所述第一控制开关的第二端与所述第二控制开关的第二端进行连接，所述第三控制开关的第一端与所述第一控制开关的第一端进行连接，所述第三控制开关的第二端与所述第二控制开关的第一端进行连接，所述第一控制开关的第二端与所述直流充电母线相连。
其中，可选地，当所述信号处理器接收到目标充电枪发送的充电请求指令时，所述信号处理器检测处于闲置状态的充电枪的数量与处于占用状态的充电
枪的数量的比值，并在所述比值满足快充条件时生成与所述目标充电枪对应的快充指令，并将所述快充指令发送至所述开关控制器，所述开关控制器根据所述快充指令将至少两个供电装置连接至所述目标充电枪，以对所述目标充电枪进行快充操作；
其中，所述开关控制器根据所述快充指令确定第一供电装置和至少一个第二供电装置为所述目标充电枪供电，所述开关控制器根据所述快充指令调整各第二供电装置分别对应的开关组件，以断开所述各第二供电装置与对应的充电枪之间的连接关系，并建立所述各第二供电装置与所述直流充电母线的连接关系；
所述开关控制器根据所述快充指令调整所述第一供电装置对应的开关组件，以建立所述第一供电装置与所述目标充电枪之间的连接关系，并建立所述第一供电装置与所述直流充电母线的连接关系；所述第一供电装置为通过一个开关组件与所述目标充电枪进行连接的供电装置，所述第二供电装置为通过两个开关组件与所述目标充电枪进行连接的供电装置；
其中，所述各开关组件中的所述第二控制开关的最大承载电流大于或等于所述各供电装置输出的固定电流阈值之和；
其中，所述充电母线的最大承载电流大于或等于所述各供电装置输出的固定电流阈值之和。
其中，可选地，当所述信号处理器接收到目标充电枪发送的充电请求指令时，所述信号处理器检测处于闲置状态的充电枪的数量与处于占用状态的充电枪的数量的比值，并在所述比值满足慢充条件时生成与所述目标充电枪对应的慢充指令，并将所述慢充指令发送至所述开关控制器，所述开关控制器将与所述目标充电枪对应的供电装置连接至所述目标充电枪，以对所述目标充电枪进行慢充操作；
其中，所述开关控制器根据所述慢充指令调整与所述目标充电枪对应的开关组件，以断开与所述目标充电枪对应的供电装置与所述直流充电母线的连接关系，并建立与所述目标充电枪对应的供电装置与所述目标充电枪的连接关系。
在本发明中，所述信号处理器、开关控制器、多个供电装置和多个充电枪
组成了直流充电设备，且所述信号处理器可根据所述多个充电枪对应的工作状态信息生成开关控制指令，并将所述开关控制指令发送至所述开关控制器，所述开关控制器根据所述开关控制指令对所述多个供电装置和所述多个充电枪之间的电连接关系进行调整，进而可调整各充电枪上的充电电流，并提高对充电机的利用率，以降低充电机成本。
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1是本发明实施例提供的一种直流充电设备的结构示意图；
图2是本发明实施例提供的另一种直流充电设备的结构示意图；
图3是本发明实施例提供的一种开关组件的结构示意图；
图4是本发明实施例提供的又一种直流充电设备的结构示意图。
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
以下分别进行详细说明。
请参见图1，是本发明实施例提供的一种直流充电设备的结构示意图。如图1所示，所述直流充电设备1包括：信号处理器10、开关控制器20、多个供电装置30和多个充电枪40；
所述信号处理器10分别与所述多个充电枪40以及所述开关控制器20连接，所述多个供电装置30通过所述开关控制器20与所述多个充电枪40连接；
所述信号处理器10根据所述多个充电枪40对应的工作状态信息生成开关
控制指令，并将所述开关控制指令发送至所述开关控制器20，所述开关控制器20根据所述开关控制指令对所述多个供电装置30和所述多个充电枪40之间的电连接关系进行调整；
具体地，所述信号处理器10可在收到目标充电枪(所述目标充电枪可以为图1所对应实施例中所述多个充电枪40中的任意一个充电枪40)发送的充电请求指令时，根据所述充电请求指令检测所述多个充电枪40对应的工作状态信息，并进一步生成与所述目标充电枪对应的快充指令，并将所述快充指令发送给所述开关控制器20，以使所述开关控制器20根据所述快充指令在多个供电装置30中选择至少两个供电装置30与所述目标充电枪相连，以对所述目标充电枪进行快充操作；
可选地，所述信号处理器10还可在接收到目标充电枪发送的充电请求指令时，根据所述充电请求指令检测所述多个充电枪40分别对应的工作状态信息，并进一步生成与所述目标充电枪对应的慢充指令，并将所述慢充指令发送给所述开关控制器20，以使所述开关控制器根据所述慢充指令对所述多个供电装置30和所述多个充电枪40之间的电连接关系进行调整，以对所述目标充电枪进行慢充操作。
鉴于此，可将所述直流充电设备1应用于为新能源汽车提供动力资源的地面充电桩上，以根据实际应用中各充电枪40分别对应的工作状态信息，进一步控制所述开关控制器20实现动态功率分配，并进一步构成群组式的地面供电装置，进而实时调整目标充电枪上的充电电流，以提高对各供电装置30中的各小功率充电机的利用率。
由此可见，在本发明中，所述直流充电设备1中的所述信号处理器10分别与所述多个充电枪40以及所述开关控制器20连接，所述多个供电装置30通过所述开关控制器20与所述多个充电枪40连接；此外，所述信号处理器首先根据所述多个充电枪对应的工作状态信息生成开关控制指令；然后，所述信号处理器10将所述开关控制指令发送至所述开关控制器20；最后，所述开关控制器20根据所述开关控制指令对所述多个供电装置30和所述多个充电枪40之间的电连接关系进行调整。可见，当所述信号处理器10接收到目标充电枪发送的充电请求指令时，可进一步根据所述多个充电枪40对应的工作状态
信息生成与所述目标充电枪对应的快充指令或者慢充指令，并可进一步在所述开关控制器20接收到所述快充指令时，可在多个供电设备30中选择至少两个供电装置30连接到所述目标充电枪，以对所述目标充电枪进行快充操作；可选地，所述开关控制器20还可在接收到所述慢充指令时，将所述直流充电设备1中的各供电装置30一对一地连接到各充电枪40，以对目标充电枪进行慢充操作，进而可提高对充电机的利用率，并可进一步根据各充电枪的工作状态信息，实时调整各充电枪上的充电电流、以降低充电机成本。
进一步地，请参见图2，是本发明实施例另一种直流充电设备的结构示意图。如图2所示，所述直流充电设备包括上述图1所对应实施例中的所述信号处理器10、开关控制器20、多个供电装置30和多个充电枪40；其中，所述开关控制器20包括：多个开关组件201以及直流充电母线202；
其中，在任意一个开关组件201中，所述开关组件均包括第一控制开关、第二控制开关、第三控制开关；具体地，请参见图3，是本发明实施例提供的一种开关组件的结构示意图。如图3所示，所述开关组件201包括，第一控制开关2011、第二控制开关2012和第三控制开关2013；
结合上述图2和图3可知，所述多个供电装置30中的各供电装置30分别与各开关组件201中的第一控制开关2011的第一端进行一一对应连接，各充电枪40分别与各开关组件201中的第二控制开关2012的第一端进行一一对应连接；其中，一个供电装置30连接一个第一控制开关2011的第一端，一个充电枪40连接一个第二控制开关2012的第一端；
此外，在任意一个开关组件201中，所述第一控制开关2011的第二端与所述第二控制开关2012的第二端进行连接，所述第三控制开关2013的第一端与所述第一控制开关2011的第一端进行连接，所述第三控制开关2013的第二端与所述第二控制开关2012的第一端进行连接，所述第一控制开关2011的第二端与所述直流充电母线202相连。
其中，当所述信号处理器10接收到目标充电枪发送的充电请求指令时，所述信号处理器10检测处于闲置状态的充电枪的数量与处于占用状态的充电枪的数量的比值，并在所述比值满足快充条件时生成与所述目标充电枪对应的快充指令，并将所述快充指令发送至所述开关控制器20，所述开关控制器20
根据所述快充指令将至少两个供电装置30连接至所述目标充电枪，以对所述目标充电枪进行快充操作；
进一步地，所述开关控制器20可根据所述快充指令确定第一供电装置和至少一个第二供电装置为所述目标充电枪供电，所述开关控制器20根据所述快充指令调整各第二供电装置分别对应的开关组件201，以断开所述各第二供电装置与对应的充电枪40之间的连接关系，并建立所述各第二供电装置与所述直流充电母线202的连接关系；
进一步地，所述开关控制器20可根据所述快充指令调整所述第一供电装置对应的开关组件201，以建立所述第一供电装置与所述目标充电枪之间的连接关系，并建立所述第一供电装置与所述直流充电母线202的连接关系；
其中，所述第一供电装置为通过一个开关组件201与所述目标充电枪进行连接的供电装置30，所述第二供电装置为通过两个开关组件201与所述目标充电枪进行连接的供电装置30。
可选地，所述信号处理器10还可在接收到目标充电枪发送的充电请求指令时，检测处于闲置状态的充电枪的数量与处于占用状态的充电枪的数量的比值，并在所述比值满足慢充条件时生成与所述目标充电枪对应的慢充指令，并将所述慢充指令发送至所述开关控制器20，所述开关控制器20将与所述目标充电枪对应的供电装置30连接至所述目标充电枪，以对所述目标充电枪进行慢充操作；
进一步地，所述开关控制器20根据所述慢充指令调整与所述目标充电枪对应的开关组件201，以断开与所述目标充电枪对应的供电装置30与所述直流充电母线202的连接关系，并建立与所述目标充电枪对应的供电装置30与所述目标充电枪的连接关系。
其中，所述各供电装置30均为恒流输出的直流充电机，且各直流充电机的最大电流为固定电流阈值；
其中，所述各开关组件201中的所述第二控制开关2012的最大承载电流大于或等于所述各供电装置30输出的固定电流阈值之和；因此，可以避免所述第二控制开关2012因电流过大而造成损坏的现象。
其中，所述直流充电母线202的最大承载电流大于或等于所述各供电装置
30输出的固定电流阈值之和；因此，可以避免所述直流充电母线202因累计到的由所述多个供电装置30提供的电流过大而造成损坏的现象。
其中，所述多个充电枪40中的各充电枪40的最大承载电流大于或等于所述各供电装置30输出的固定电流阈值之和，因此，可在所述多个供电装置30同时连接到单个充电枪40对其进行供电时，不至于因电流过大而造成损坏现象。
比如，进一步地，请参见图4，是本发明实施例提供的又一种直流充电设备的结构示意图。如图4所示，各供电装置分别通过开关控制器连接至各充电枪，且各供电装置与各充电枪的数量为一对一模式，即Na个供电装置对应着Nb个充电枪。在图4中，具体包括，多个供电装置30，多个充电枪40，直流充电母线202和多个开关组件201；其中，第N个开关组件201中包括第一控制开关KN1，第二控制开关KN2，第三控制开关KN3；例如，第一个开关组件201包括第一控制开关K11，第二控制开关K12，第三控制开关K13，即各开关组件201均可用Ki1表示第一控制开关，Ki2表示第二控制开关，Ki3表示第三控制开关，(其中i＝1，2…，N)，相应地，在图4中，可用ia供电装置表示所述多个供电装置30中的各供电装置30，并可用ib充电枪表示所述多个充电枪40中的各充电枪40。
例如，当与各充电枪40分别对应的开关组件201的最大标号N＝5，且检测到目标充电枪为5个充电枪(1b充电枪，2b充电枪，3b充电枪，4b充电枪，5b充电枪)的工作状态信息均为占用状态时，可生成与这5个充电枪对应的慢充指令，并将所述慢充指令发送给包含5个开关组件201的开关控制器20；随后，该开关控制器20将分别调整与这5个充电枪对应的开关组件201，即断开与目标充电枪(这5个充电枪)对应的供电装置(1a供电装置，2a供电装置，3a供电装置，4a供电装置，5a供电装置)与所述直流充电母线202的连接关系，以使Ki1(i＝1，2，3，4，5)上的电平信号等于零，即断开第一控制开关，进而使所述直流充电母线上的电流信号为零；并进一步建立与这5个充电枪对应的供电装置与所述目标充电枪的连接关系，以使Ki3(i＝1，2，3，4，5)上的电平信号均为1，即闭合第三控制开关。可见，所述直流供电设备中的5个供电装置可分别通过相应的5个开关组件一一连接到5个充电枪。
又比如，仍以上述图2和图4所对应的结构图为例，各开关组件201中均包含第一控制开关(Ki1)、第二控制开关(Ki2)、第三控制开关(Ki3)，其中，i分别为对应的开关组件201内各控制开关的编号(即i＝1，2，3，4，5)，当图2所对应实施例中的信号处理器10接收到目标充电枪(比如，1b充电枪)发送的充电请求指令时，可根据所述1b充电枪发送的充电请求检查处于闲置状态的充电枪的数量(4个)与处于占用状态的充电枪的数量(1个)的比值。由于闲置的充电枪的数量是被占用的充电枪的数量的4倍。因此，所述信号处理器10可确定该比值满足快充条件(即处于闲置状态的充电枪的数量与处于占用状态的充电枪的数量的比值不为零)，于是，所述信号处理器10可进一步生成与该1b充电枪对应的快充指令，并将与该1b充电枪对应的快充指令发送给所述开关控制器20，进而可使该开关控制器20根据所述开关指令将闲置的4个供电装置(2a供电装置，3a供电装置，4a供电装置，5a供电装置)和与1b充电枪对应的供电装置(1a)同步连接至1b充电枪，以对1b充电枪进行5倍速的快充操作。
然而，在对1b充电枪进行快充操作时，所述开关处理器20还可进一步根据所述快充指令，调整各第二供电装置(具体包括2a供电装置，3a供电装置，4a供电装置，5a供电装置)分别对应的开关组件201，以进一步断开这四个供电装置与对应的充电枪之间的连接关系，并建立这四个供电装置与所述直流充电母线202的连接关系，即将与闲置的4个充电枪具有连接关系的第二控制开关和第三控制开关对应的工作状态调整为断开状态，并将与充电母线具有连接关系的各开关组件中的第一控制快关均处于闭合状态；此外，该开关控制器20还可进一步调整与第一供电装置(1a供电装置)对应的开关组件201，并建立该1a供电装置与所述直流充电母线202之间的连接关系。进一步地，请参见表1，为该供电设备中各开关组件201分别对应的开关连接属性；
| 各供电装置 | 第一控制开关 | 第二控制开关 | 第三控制开关 | 各充电枪 |
| 1a供电装置 | K11＝1 | K12＝1 | K13＝0 | 1b充电枪 |
| 2a供电装置 | K21＝1 | K22＝0 | K23＝0 | 2b充电枪 |
| 3a供电装置 | K31＝1 | K32＝0 | K33＝0 | 3b充电枪 |
| 4a供电装置 | K41＝1 | K42＝0 | K23＝0 | 4b充电枪 |
| 5a供电装置 | K51＝1 | K52＝0 | K53＝0 | 5b充电枪 |
表1
如上述表1所示，当信号处理器10将快充指令发送给所述开关控制器20时，可使开关处理器20根据所述快充指令调整与各第二供电装置(闲置的4个供电装置)分别对应的开关组件201，即有与这4个闲置的供电装置分别对应的各第一控制开关上的电平信号均为1，即有K21＝1,K31＝1,K41＝1,K51＝1；此外，各第二控制开关上的电平信号均为0，即K22＝0，K32＝0，K42＝0，K52＝0，且有各第三控制开关上的电平信号均为0，即K23＝0，K23＝0，K23＝0，K23＝0。
与此同时，该开关控制器20还根据所述快充指令调整与第一供电装置(1a供电装置)对应的开关组件201，即有与该1a供电装置对应的第一控制开关上的电平信号为1，即K11＝1，且第二控制开关上的电平信号为1，即K12＝1，且第三控制开关上的电平信号K13＝0。因此，该开关控制器20根据所述开关指令将闲置的4个供电装置(2a供电装置，3a供电装置，4a供电装置，5a供电装置)和与1b充电枪对应的供电装置(1a)同步连接至1b充电枪，以对目标充电枪进行5倍速的快充操作。
可见，当采用Na个供电装置对Nb各充电枪进行供电时，若处于闲置状态的充电枪的数量与处于占用状态的充电枪的数量的比值不为零，比如，所述比值为整数倍D时，则信号处理器可生成与目标充电枪对应的快充指令，并将该快充指令发送给开关控制器20，,进而所述开关控制器20可调整相应的开关组件201的闭合以及断开属性，进而可对处于占用状态的各充电枪分别进行(D+1)倍的快速充电，此时，各供电装置均为小功率的充电机，且各小功率的充电机可通过所述直流充电母线202同步对目标充电枪进行快充操作，具体地，请参见上述表1给出的开关控制器20对内部多个开关组件201的控制情况，这里将不再继续赘述。
又比如，仍以上述图4给出的结构图为例，当直流供电设备1中的5个供电装置(1a供电装置，2a供电装置，3a供电装置，4a供电装置，5a供电装置)分别通过相应的开关组件201连接5个充电枪，且处于闲置状态的充电枪的数量与处于占用状态的充电枪之间的比值仍不为零，即仍满足快充条件，但该比
值不为整数倍(例如，当有2个闲置的充电枪和3个占用的充电枪)时，此时，该信号处理器10可接收到目标充电枪(1b充电枪，3b充电枪，5b充电枪)发送的充电指令，并可根据快充指令控制所述开关控制器20对部分充电枪(比如，1b充电枪和3b充电枪)进行2倍速充电(用1a供电装置和2a供电装置对1b充电枪进行倍速充电，并用3a供电装置和4a供电装置对3b充电枪进行倍速充电)，并在与1b和3b连接的电动汽车的电量充满时，所述开关控制器20可进一步将与1b充电枪和3b充电枪对应的1a供电装置和3a供电装置作为第二供电装置，此时，信号处理器10还可在其他4个充电枪处于闲置状态，且5b充电枪处于占用状态时，进一步生成对5b充电枪的快充指令，以进一步对5b充电枪执行快充操作；其中，对5b充电枪的倍速充电可进一步参见上述表1所对应的各开关组件分别对应的开关连接属性，这里不再进行赘述。
由此可见，在本发明中，所述直流充电设备1中的所述信号处理器10分别与所述多个充电枪40以及所述开关控制器20连接，所述多个供电装置30通过所述开关控制器20与所述多个充电枪40连接；此外，所述信号处理器10首先根据所述多个充电枪40对应的工作状态信息生成开关控制指令；然后，所述信号处理器10将所述开关控制指令发送至所述开关控制器20；最后，所述开关控制器20根据所述开关控制指令对所述多个供电装置30和所述多个充电枪40之间的电连接关系进行调整。可见，当所述信号处理器10接收到目标充电枪发送的充电请求指令时，可进一步检测所述直流充电设备1中处于闲置状态的充电机的数量与所述处于占用状态的充电机的数量之间的比值；若所述比值为零，则确定满足慢充条件，因此，可将所述直流充电设备1中的各充电装置30一对一地连接到各充电枪40，以对目标充电枪进行满足操作；可选地，若所述比值不为零，则确定满足快充条件，因此，可使开关控制器20将至少两个供电装置30连接至所述目标充电枪，以对所述目标充电枪进行快充操作，进而可提高对充电机的利用率，并可进一步根据各充电枪的工作状态信息，调整各充电枪上的充电电流、以降低充电机成本。
本领域普通技术人员可以理解实现上述实施例方法中的全部或部分流程，是可以通过计算机程序来指令相关的硬件来完成，所述的程序可存储于一计算机可读取存储介质中，该程序在执行时，可包括如上述各方法的实施例的流程。
其中，所述的存储介质可为磁碟、光盘、只读存储记忆体(Read-Only Memory，ROM)或随机存储记忆体(Random Access Memory，RAM)等。
以上所揭露的仅为本发明较佳实施例而已，当然不能以此来限定本发明之权利范围，因此依本发明权利要求所作的等同变化，仍属本发明所涵盖的范围。
Claims (10)
- 一种直流充电设备，其特征在于，所述直流充电设备包括信号处理器、开关控制器、多个供电装置和多个充电枪；所述信号处理器分别与所述多个充电枪以及所述开关控制器连接，所述多个供电装置通过所述开关控制器与所述多个充电枪连接；所述信号处理器根据所述多个充电枪对应的工作状态信息生成开关控制指令，并将所述开关控制指令发送至所述开关控制器，所述开关控制器根据所述开关控制指令对所述多个供电装置和所述多个充电枪之间的电连接关系进行调整。
- 根据权利要求1所述的直流充电设备，其特征在于，所述开关控制器包括多个开关组件以及直流充电母线，所述开关组件包括第一控制开关、第二控制开关、第三控制开关；所述多个供电装置中的各供电装置分别与各开关组件中的第一控制开关的第一端进行一一对应连接，各充电枪分别与各开关组件中的第二控制开关的第一端进行一一对应连接；一个供电装置连接一个第一控制开关的第一端，一个充电枪连接一个第二控制开关的第一端；在任意一个开关组件中，所述第一控制开关的第二端与所述第二控制开关的第二端进行连接，所述第三控制开关的第一端与所述第一控制开关的第一端进行连接，所述第三控制开关的第二端与所述第二控制开关的第一端进行连接，所述第一控制开关的第二端与所述直流充电母线相连。
- 根据权利要求1所述的直流充电设备，其特征在于，当所述信号处理器接收到目标充电枪发送的充电请求指令时，所述信号处理器检测处于闲置状态的充电枪的数量与处于占用状态的充电枪的数量的比值，并在所述比值满足快充条件时生成与所述目标充电枪对应的快充指令，并将所述快充指令发送至所述开关控制器，所述开关控制器根据所述快充指令将至少两个供电装置连接 至所述目标充电枪，以对所述目标充电枪进行快充操作。
- 根据权利要求3所述的直流充电设备，其特征在于，所述开关控制器根据所述快充指令确定第一供电装置和至少一个第二供电装置为所述目标充电枪供电，所述开关控制器根据所述快充指令调整各第二供电装置分别对应的开关组件，以断开所述各第二供电装置与对应的充电枪之间的连接关系，并建立所述各第二供电装置与所述直流充电母线的连接关系；所述开关控制器根据所述快充指令调整所述第一供电装置对应的开关组件，以建立所述第一供电装置与所述目标充电枪之间的连接关系，并建立所述第一供电装置与所述直流充电母线的连接关系；所述第一供电装置为通过一个开关组件与所述目标充电枪进行连接的供电装置，所述第二供电装置为通过两个开关组件与所述目标充电枪进行连接的供电装置。
- 根据权利要求1所述的直流充电设备，其特征在于，当所述信号处理器接收到目标充电枪发送的充电请求指令时，所述信号处理器检测处于闲置状态的充电枪的数量与处于占用状态的充电枪的数量的比值，并在所述比值满足慢充条件时生成与所述目标充电枪对应的慢充指令，并将所述慢充指令发送至所述开关控制器，所述开关控制器将与所述目标充电枪对应的供电装置连接至所述目标充电枪，以对所述目标充电枪进行慢充操作。
- 根据权利要求5所述的直流充电设备，其特征在于，所述开关控制器根据所述慢充指令调整与所述目标充电枪对应的开关组件，以断开与所述目标充电枪对应的供电装置与所述直流充电母线的连接关系，并建立与所述目标充电枪对应的供电装置与所述目标充电枪的连接关系。
- 根据权利要求1至6任一项所述的直流充电设备，其特征在于，所述各供电装置均为恒流输出的直流充电机，且各直流充电机的最大电流均为固定电流阈值。
- 根据权利要求2所述的直流充电设备，其特征在于，所述各开关组件中的所述第二控制开关的最大承载电流大于或等于所述各供电装置输出的固定电流阈值之和。
- 根据权利要求2所述的直流充电设备，其特征在于，所述充电母线的最大承载电流大于或等于所述各供电装置输出的固定电流阈值之和。
- 根据权利要求1所述的直流充电设备，其特征在于，所述多个充电枪中的各充电枪的最大承载电流大于或等于所述各供电装置输出的固定电流阈值之和。
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