WO2023098528A1 - 一种充放电控制系统 - Google Patents

一种充放电控制系统 Download PDF

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Publication number
WO2023098528A1
WO2023098528A1 PCT/CN2022/133664 CN2022133664W WO2023098528A1 WO 2023098528 A1 WO2023098528 A1 WO 2023098528A1 CN 2022133664 W CN2022133664 W CN 2022133664W WO 2023098528 A1 WO2023098528 A1 WO 2023098528A1
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Prior art keywords
charging
port
switch
control
module
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PCT/CN2022/133664
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English (en)
French (fr)
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王超
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长春捷翼汽车科技股份有限公司
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Publication of WO2023098528A1 publication Critical patent/WO2023098528A1/zh

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/20—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by converters located in the vehicle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/60—Monitoring or controlling charging stations
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10—Technologies relating to charging of electric vehicles
    • Y02T90/16—Information or communication technologies improving the operation of electric vehicles

Definitions

  • This article relates to the technical field of new energy electric vehicles, especially a charging and discharging control system.
  • Charging piles can be installed in public buildings (public buildings, shopping malls, public parking lots, etc.) and residential parking lots or charging stations, and can charge various types of electric vehicles according to different voltage levels.
  • the input end of the charging pile is directly connected to the AC grid, and the output end is equipped with a charging plug for charging the electric vehicle.
  • the existing charging piles will not be able to be used.
  • electric vehicles store considerable electric energy due to their huge quantity. Therefore, the effective use of electric energy in idle electric vehicles is a problem that needs to be solved at present.
  • this paper provides a charging and discharging control system, including:
  • a charging control box the charging control box includes a control module, a communication module, a charging port, a discharging port, and a first controllable switch circuit, and the first controllable switching circuit is used to realize the connection between the charging port and the discharging port.
  • the charging port is used to connect to the power grid
  • the discharging port is used to connect to external electrical equipment
  • the communication module is used to realize the communication connection between the control module and the electric vehicle;
  • a charging gun the charging gun includes a charging resistor, a discharging resistor and a second controllable switch circuit, the second controllable switching circuit is used to switch between the charging resistor and the discharging resistor;
  • control module is signal-connected to the first controllable switch circuit, the second controllable switch circuit and the communication module, and the control module is configured as:
  • control the first controllable switch circuit When the charging port is connected to the power grid, and according to the battery state information of the electric vehicle, control the first controllable switch circuit to switch to communicate with the charging port, and control the second controllable switch circuit The circuit is switched to connect the charging resistor to form a charging circuit, so that the charging gun outputs an AC voltage or current that matches the battery of the electric vehicle.
  • the charge and discharge control system provided in this paper can realize the charging of electric vehicles and the reverse power supply of electric vehicles to electrical equipment, which meets the charging and discharging needs of electric vehicles in different occasions.
  • Fig. 1 shows the charging and discharging control system of the first embodiment of this paper
  • Fig. 2 shows the charging and discharging control system of the second embodiment herein.
  • this embodiment provides an AC charging and discharging control system 100 , including a charging control box and a charging gun.
  • the charging control box includes a control module (which can be configured as MCU, Micro Control Unit), a communication module (not shown in the figure, it can be understood that the communication module can be a GPRS communication module or a WIFI module or a Bluetooth module, wherein the GPRS module communicates
  • the module can be a 4G module or a 5G module), a charging port, a discharging port, and a first controllable switch circuit.
  • the first controllable switching circuit is used to switch between the charging port and the discharging port.
  • the charging port is used to connect to the power grid.
  • the discharge port is used to connect external electrical equipment, and the communication module is used to realize the communication connection between the control module and the electric vehicle.
  • the charging gun includes a charging resistor R1, a discharging resistor R2 and a second controllable switch circuit, and the second controllable switching circuit is used to switch between the charging resistor R1 and the discharging resistor R2.
  • control module is connected to the first controllable switch circuit, the second controllable switch circuit and the communication module, and the control module is configured as follows:
  • control module can also be configured to: control the first controllable switch circuit to switch to connect the discharge port, And control the second controllable switch circuit to switch to connect the discharge resistor R2, and then form a discharge circuit, so that the charging gun outputs an alternating current that matches the grid.
  • the charging and discharging control system of this embodiment through the control of the first controllable switch circuit and the second controllable switch circuit by the control module, it is possible to realize the charging process of the electric vehicle with the alternating current of the power grid, and also realize the charging process of the electric vehicle.
  • the reverse power supply process of electrical equipment meets the charging and discharging needs of electric vehicles in different occasions.
  • the first controllable switch circuit may include a first solid state switch U1 , a second solid state switch U2 , a third solid state switch U3 and a fourth solid state switch U4 .
  • the solid-state switch can be configured as a solid-state relay switch.
  • the solid-state switch in the first controllable switch circuit can also be replaced with a thyristor switch device according to the actual circuit setting requirements. etc. to achieve similar functions, which is not limited in this article.
  • the first solid-state switch U1 is connected between the live line L of the charging gun and the neutral line N of the discharge port; the second solid-state switch U2 is connected between the zero line N of the charging gun and the live line L of the discharge port; the third solid-state switch U3 is connected Between the neutral line N of the charging gun and the neutral line N of the charging port; the fourth solid state switch U4 is connected between the live line L of the charging gun and the live line L of the charging port.
  • the second controllable switch circuit may include a first transistor Q1 and a second transistor Q2.
  • the base of the first triode Q1 is used to connect the battery management system of the electric vehicle, the collector of the first triode Q1 is connected to the charging resistor R1, and the other end of the charging resistor R1 is connected to the power supply voltage, and the first triode Q1
  • the emitter of Q1 is connected to the ground wire of the charging gun;
  • the base of the second transistor Q2 is used to connect the battery management system of the electric vehicle, the collector of the second transistor Q2 is connected to the discharge resistor R2, and the second transistor Q2 The emitter is connected to the ground wire of the charging gun.
  • the AC/DC power supply module is powered and works, and outputs to the guidance module, control module, controllable switch detection module, leakage
  • the detection module, the voltage/current detection module (refer to FIG. 2 ), etc. provide energy, and each module works in place.
  • the control module detects the connection of the mains alternating current, the first triode Q1 of the charging gun is turned on, and the charging resistor R1 is connected to the charging circuit, waiting for charging.
  • the leakage detection module is controlled to determine whether there is abnormal leakage. If there is no abnormality, the control module waits for the charging gun to be inserted into the electric vehicle; the charging gun Connected to the charging port of the electric vehicle, the guidance module can detect the charging status and the connection status. If there is no abnormality, the guidance module notifies the control module that the charging preparation work is completed and can be charged; then the control module allows the controllable switch detection module to connect Through the third solid-state switch U3 and the fourth solid-state switch U4, a charging circuit is formed to carry out the charging process.
  • an alarm can be issued through the prompt module, and the control module can initiate emergency measures to prevent charging.
  • the charging control box can be powered by the backup battery, and the first transistor Q1 is disconnected.
  • the second triode Q2 is turned on and connected to the discharge resistor R2 to wait for discharge.
  • the backup battery is electrically connected to the control module, and is used to supply power to the control module when the charging port is not connected to the grid.
  • the powered AC/DC power module can charge the backup battery, so when the AC/DC power module is powered off, it can be powered by the backup battery.
  • the control module before performing the discharge process, it is necessary to control the guidance module to detect whether the electric vehicle has the discharge capability, and if so, the control module allows the controllable switch detection module to turn on the first solid-state switch U1 and the second solid-state switch U2, A discharge circuit is formed for discharge. After discharging to a predetermined amount, the first solid-state switch U1 and the second solid-state switch U2 can be controlled to be turned off.
  • a charge selection button K1 and a discharge selection button K2 can also be provided outside the charging control box, the charge selection button K1 and the discharge selection button K2 are connected to the control module, and the control module is configured as follows: according to the charging selection button K1 and the discharge selection button The triggering of K2 controls switching of the first controllable switch circuit and the second controllable switch circuit.
  • control module detects whether the grid is connected to the charging port and whether the electric vehicle is connected to the discharging port, and the charging mode or the discharging mode can be manually selected, thereby improving the charging and discharging efficiency.
  • the difference between the charge and discharge control system 200 provided in this embodiment and the charge and discharge control system 100 in Embodiment 1 lies in the specific configurations of the first controllable switch circuit and the second controllable switch circuit. Because, for the sake of brevity, only the distinguishing technical features are described in detail in this embodiment.
  • the first controllable switch circuit includes a first mechanical switch K4 and a second mechanical switch K5, the movable contact of the first mechanical switch K4 is connected to the neutral line N of the charging gun, and the first mechanical switch K4
  • the normally closed contact of the first mechanical switch K4 is connected to the neutral line N of the discharge port, the normally open contact of the first mechanical switch K4 is connected to the neutral line N of the charging port;
  • the moving contact of the second mechanical switch K5 is connected to the live line L of the charging gun, and the second mechanical switch K5
  • the normally closed contact of the switch K5 is connected to the live wire L of the discharge port, and the normally open contact of the second mechanical switch K5 is connected to the live wire L of the charging port.
  • the second controllable switch circuit includes a third mechanical switch K3, the movable contact of the third mechanical switch K3 is connected to the battery management system of the electric vehicle, the normally closed contact of the third mechanical switch K3 is connected to the discharge resistor R2, and the third The normally open contact of the mechanical switch K3 is connected to the charging resistor R1.
  • the mechanical switch in this embodiment can be configured as a mechanical relay switch.
  • the AC/DC power supply module is powered and works, and outputs to the guidance module, control module, controllable switch detection module, leakage The detection module, voltage/current detection module, etc. provide energy, and each module works in place.
  • the third mechanical switch K3 is switched to the charging resistor R1 at the fastest speed, and the charging resistor R1 is connected to the charging circuit and waits for charging.
  • the control module Before carrying out the charging process, it is also necessary to control the guidance module to detect whether the electric vehicle needs to be charged. If it needs to be charged, the leakage detection module is controlled to determine whether there is abnormal leakage. If there is no abnormality, the control module waits for the charging gun to be inserted into the electric vehicle; the charging gun Connected to the charging port of the electric vehicle, the guidance module can detect the charging status and connection status.
  • the guidance module notifies the control module that the charging preparation work is completed and can be charged; after that, the control module allows the controllable switch detection module to control
  • the first mechanical switch K4 and the second mechanical switch K5 are engaged, and at this time, the first mechanical switch K4 and the second mechanical switch K5 are connected to the charging port, thereby forming a charging circuit and performing the charging process.
  • the default connection between the first mechanical switch K4 and the second mechanical switch K5 is the discharge port, therefore, it needs to be turned on to switch during the charging process.
  • an alarm can be issued through the prompt module, and the control module can initiate emergency measures to prevent charging.
  • the charging port changes from being powered to being powered off, and the AC/DC power supply module is powered off, so the control module and other modules do not work.
  • the first mechanical switch K4 and the second mechanical switch Neither K5 nor the third mechanical switch K3 is turned on, that is, the default state is restored. In this state, the first mechanical switch K4 and the second mechanical switch K5 are connected to the discharge port, and the third mechanical switch K3 is connected to the discharge resistor R2 to form a discharge circuit. , to discharge.
  • the guidance module can also be controlled to detect whether the electric vehicle has the discharge capability, and if so, the discharge is performed.
  • the charging port is not powered, the AC/DC power supply module is not powered, the controllable switch detection module is not powered, and the first mechanical switch K4, the second mechanical switch K5 and the third mechanical switch K3 are not closed, that is In the default state, the discharge port is connected to the electric vehicle discharge equipment, and the electric vehicle can output 220V AC externally.
  • the charging and discharging control system of each embodiment herein it can not only realize the charging of the electric vehicle, but also realize the reverse power supply of the electric vehicle to the electric equipment, which meets the charging and discharging requirements of the electric vehicle in different occasions.

Abstract

本文提供了一种充放电控制系统，包括充电控制盒和充电枪，充电控制盒包括控制模块、通讯模块、充电端口、放电端口和第一可控开关电路；充电枪包括充电电阻、放电电阻和第二可控开关电路；控制模块与第一可控开关电路、第二可控开关电路以及通讯模块信号连接，控制模块配置为在充电端口接入电网的状态下，并根据电动汽车的电池状态信息，控制第一可控开关电路进行切换以连通充电端口以及控制第二可控开关电路进行切换以连接充电电阻，进而形成充电回路，使充电枪输出与电动汽车的电池相匹配的电压或电流。本文的充放电控制系统既可以实现对电动汽车的充电也可以实现电动汽车对用电设备的反向供电，满足了不同场合对电动汽车的充放电需求。

Description

一种充放电控制系统
本文要求享有2021年11月30日递交、申请号为202122966236.9、实用新型名称为“一种充放电控制系统”的中国专利的优先权，该专利的所有内容在此全部引入。
技术领域
本文涉及新能源电动汽车技术领域，尤其涉及一种充放电控制系统。
背景技术
随着汽车工业进程的快速发展，以及人们社会环保意识的增强，新能源汽车行业的发展成为解决石油资源短缺、降低大气污染的关键点。配套的充电桩也是一种必备的设备。
充电桩可以安装于公共建筑(公共楼宇、商场、公共停车场等)和居民小区停车场或充电站内，可以根据不同的电压等级为各种型号的电动汽车充电。充电桩的输入端与交流电网直接连接，输出端都装有充电插头用于为电动汽车充电。一旦出现电网缺电、电网断电等紧急情况，现有充电桩将无法使用。电动汽车作为一种可移动的分布式能量存储装置，由于数量巨大，所存储的电能也十分可观，因此，将闲置状态下的电动汽车内的电能进行有效的利用是当前所需要解决的问题。
发明内容
为了解决上述技术问题，本文提供一种充放电控制系统，包括：
充电控制盒，所述充电控制盒包括控制模块、通讯模块、充电端口、放电端口和第一可控开关电路，所述第一可控开关电路用于实现所述充电端口与所述放电端口之间的切换，所述充电端口用于接入电网，所述放电端口用于连接外部用电设备，所述通讯模块用于实现所述控制模块与电动汽车通讯连接；
充电枪，所述充电枪包括充电电阻、放电电阻和第二可控开关电路，所述第二可控开关电路用于实现所述充电电阻与所述放电电阻之间的切换；
其中，所述控制模块与所述第一可控开关电路、所述第二可控开关电路以及所述通讯模块信号连接，所述控制模块配置为：
在所述充电端口接入电网的状态下，并根据所述电动汽车的电池状态信息，控制所述第一可控开关电路进行切换以连通所述充电端口、以及控制所述第二可控开关电路进行切换以连接所述充电电阻，进而形成充电回路，使所述充电枪输出与所述电动汽车的电池相匹配的交流电压或电流。
本文提供的充放电控制系统，可以实现对电动汽车的充电也可以实现电动汽车对用电设备的反向供电，满足了不同场合对电动汽车的充放电需求。
为让本文的上述和其他目的、特征和优点能更明显易懂，下文特举较佳实施例，并配合所附图式，作详细说明如下。
附图说明
为了更清楚地说明本文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文的一些实施例，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示出了本文第一实施例的充放电控制系统；
图2示出了本文第二实施例的充放电控制系统。
具体实施方式
下面将结合本文实施例中的附图，对本文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文一部分实施例，而不是全部的实施例。基于本文中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本文保护的范围。
需要说明的是，本文的说明书和权利要求书及上述附图中的术语“第一”、“第二”等是用于区别类似的对象，而不必用于描述特定的顺序或先后次序。应该理解这样使用的数据在适当情况下可以互换，以便这里描述的本文的实施例能够以除了在这里图示或描述的那些以外的顺序实施。此外，术语“包括”和“具有”以及他们的任何变形，意图在于覆盖不排他的包含，例如，包含了一系列步骤或单元的过程、方法、装置、产品或设备不必限于清楚地列出的那些步骤或单元，而是可包括没有清楚地列出的或对于这些过程、方法、产品或设备固有的其它步骤或单元。
实施例1
参照图1，本实施例提供一种优选为交流的充放电控制系统100，包括充电控制盒和充电枪。
具体地，充电控制盒包括控制模块(可以配置为MCU，Micro Control Unit)、通讯模块(图中未示出，可以理解，通讯模块可以是GPRS通讯模块或WIFI模块或蓝牙模块，其中GPRS模块通讯模块可以是4G模块或5G模块)、充电端口、放电端口和第一可控开关电路，第一可控开关电路用于实现充电端口与放电端口之间的切换，充电端口用于接入电网，放电端口用于连接外部用电设备，通讯模块用于实现控制模块与电动汽车的通讯连接。
充电枪包括充电电阻R1、放电电阻R2和第二可控开关电路，第二可控开关电路用于实现充电电阻R1与放电电阻R2之间的切换。
其中，控制模块与第一可控开关电路、第二可控开关电路以及通讯模块信号连接，控制模块配置为：
在充电端口接入电网的状态下，并根据电动汽车的电池状态信息，控制第一可控开关电路进行切换以连通充电端口、以及控制第二可控开关电路进行切换以连接充电电阻R1，进而形成充电回路，使充电枪输出与电动汽车的电池相匹配的交流电压或电流。
进一步地，控制模块还可以配置为：在充电端口未接入电网且外部用电设备接入放电端口的状态下，并根据电池状态信息，控制第一可控开关电路进行切换以连通放电端口、以及控制第二可控开关电路进行切换以连接放电电阻R2，进而形成放电回路，使充电枪输出与电网匹配的交流电。
由此，根据本实施例的充放电控制系统，通过控制模块对第一可控开关电路以及第二可控开关电路的控制，既可以实现电网交流电对电动汽车的充电过程，也可以实现电动汽车对用电设备的反向供电过程，进而满足了不同场合对电动汽车的充放电需求。
具体地，参照图1，第一可控开关电路可以包括第一固态开关U1、第二固态开关U2、第三固态开关U3和第四固态开关U4。当然可以理解，在本实施例中，固态开关可以配置为固态继电器开关，在其他实施例中，第一可控开关电路中的固态开关也可以根据实际电路设置的需求替换成可控硅开关器件等，以实现类似的功能，本文并不对此进行限制。
第一固态开关U1连接在充电枪的火线L与放电端口的零线N之间；第二固态开关U2连接在充电枪的零线N与放电端口的火线L之间；第三固态开关U3连接在充电枪的 零线N与充电端口的零线N之间；第四固态开关U4连接在充电枪的火线L与充电端口的火线L之间。
更具体地，第二可控开关电路可以包括第一三极管Q1和第二三极管Q2。其中，第一三极管Q1的基极用于连接电动汽车的电池管理系统，第一三极管Q1的集电极连接充电电阻R1，充电电阻R1的另一端连接供电电压，第一三极管Q1的发射极连接充电枪的地线；第二三极管Q2的基极用于连接电动汽车的电池管理系统，第二三极管Q2的集电极连接放电电阻R2，第二三极管Q2的发射极连接充电枪的地线。
由此，在充电端口接入电网的状态下，此时充电枪还未与电动汽车连接时，AC/DC电源模块得电工作，输出给导引模块、控制模块、可控开关检测模块、漏电检测模块、电压/电流检测模块(参照图2)等提供能量，各模块工作就位。
之后，由于充电端口接入电网，控制模块检测到市电交流电的连通，充电枪的第一三极管Q1导通，充电电阻R1接入充电电路，等待充电。
在进行充电过程之前，还要控制导引模块检测电动汽车是否需要充电，若需要充电，则控制漏电检测模块判断是否有漏电异常，若无异常，则控制模块等待充电枪插入电动汽车；充电枪与电动汽车的充电口进行连接，导引模块可以对充电状态以及连接状态进行检测，若无异常，导引模块通知控制模块充电准备工作完成，可以充电；之后控制模块允许可控开关检测模块接通第三固态开关U3和第四固态开关U4，由此形成充电回路，进行充电过程。
当然可以理解，若漏电检测过程出现异常，可以通过提示模块进行报警，并且控制模块可以启动应急措施，不允许充电。
对于放电过程，由于充电端口未接入电网，充电端口由得电变为掉电，则AC/DC电源模块掉电，充电控制盒可以由备用电池供电，并且第一三极管Q1断开，第二三极管Q2导通，接入放电电阻R2等待放电。可以理解，备用电池与控制模块电连接，用于在充电端口未接入电网的情况下给控制模块供电。在充电过程中，得电的AC/DC电源模块可以为备用电池充电，因此在AC/DC电源模块掉电的状态下，可以由备用电池供电。
更具体地，在进行放电过程之前，还要控制导引模块检测电动汽车是否具备放电能力，若具备，则控制模块允许可控开关检测模块接通第一固态开关U1和第二固态开关U2，形成放电回路进行放电。放电到预定电量后，可控制第一固态开关U1和第二固态开关U2断开。
优选地，充电控制盒的外部还可以设置有充电选择按键K1和放电选择按键K2，充电选择按键K1与放电选择按键K2接入控制模块，控制模块配置为：根据充电选择按键K1和放电选择按键K2的触发控制第一可控开关电路以及第二可控开关电路的切换。
可以理解，可以无需控制模块去检测电网是否接入充电端口以及电动汽车是否接入放电端口，可以人为选择充电模式还是放电模式，由此，可以提高充放电效率。
实施例2
参照图2，本实施例提供的充放电控制系统200与实施例1的充放电控制系统100的区别仅在于第一可控开关电路以及第二可控开关电路的具体配置。因为，为了行文简洁，本实施例只对区别技术特征进行详细描述。
具体地，如图2所示，第一可控开关电路包括第一机械开关K4和第二机械开关K5，第一机械开关K4的动触点连接充电枪的零线N，第一机械开关K4的常闭触点连接放电端口的零线N，第一机械开关K4的常开触点连接充电端口的零线N；第二机械开关K5的动触点连接充电枪的火线L，第二机械开关K5的常闭触点连接放电端口的火线L，第二机械开关K5的常开触点连接充电端口的火线L。
对应地，第二可控开关电路包括第三机械开关K3，第三机械开关K3的动触点连接电动汽车的电池管理系统，第三机械开关K3的常闭触点连接放电电阻R2，第三机械开关K3的常开触点连接充电电阻R1。
可以理解，本实施例中的机械开关可以配置为机械继电器开关。
由此，在充电端口接入电网的状态下，此时充电枪还未与电动汽车连接时，AC/DC电源模块得电工作，输出给导引模块、控制模块、可控开关检测模块、漏电检测模块、电压/电流检测模块等提供能量，各模块工作就位。
之后，第三机械开关K3以最快速度切换到充电电阻R1上，充电电阻R1接入充电电路，等待充电。
在进行充电过程之前，还要控制导引模块检测电动汽车是否需要充电，若需要充电，则控制漏电检测模块判断是否有漏电异常，若无异常，则控制模块等待充电枪插入电动汽车；充电枪与电动汽车的充电口进行连接，导引模块可以对充电状态以及连接状态进行检测，若无异常，导引模块通知控制模块充电准备工作完成，可以充电；之后控制模块允许可控开关检测模块控制第一机械开关K4和第二机械开关K5吸合，此时第一机械开关K4和第二机械开关K5连通充电端口，由此形成充电回路，进行充电过程。可 以理解，第一机械开关K4和第二机械开关K5默认连通的是放电端口，因此，在进行充电过程时需要吸合进行切换。
当然可以理解，若漏电检测过程出现异常，可以通过提示模块进行报警，并且控制模块可以启动应急措施，不允许充电。
对于放电过程，由于充电端口未接入电网，充电端口由得电变为掉电，则AC/DC电源模块掉电，因此控制模块等各个模块不工作，第一机械开关K4、第二机械开关K5以及第三机械开关K3均不导通，即恢复默认状态，此状态下，第一机械开关K4和第二机械开关K5连通放电端口，第三机械开关K3接入放电电阻R2，形成放电回路，进行放电。
更具体地，在进行放电过程之前，还可以控制导引模块检测电动汽车是否具备放电能力，若具备，才进行放电。
也可以理解，只要充电端口不得电，则AC/DC电源模块不得电，则可控开关检测模块不得电，第一机械开关K4、第二机械开关K5和第三机械开关K3不吸合，即处于默认状态，放电端口与电动汽车放电设备连接，电动汽车可以对外输出220V交流电。
根据本文的各实施例的充放电控制系统，既可以实现对电动汽车的充电也可以实现电动汽车对用电设备的反向供电，满足了不同场合对电动汽车的充放电需求。
除非另有定义，本文中所使用的技术和科学术语与本发明的技术领域的技术人员通常理解的含义相同。本文中使用的术语只是为了描述具体的实施目的，不是旨在限制本发明。本文中出现的诸如“部件”等术语既可以表示单个的零件，也可以表示多个零件的组合。本文中出现的诸如“安装”、“设置”等术语既可以表示一个部件直接附接至另一个部件，也可以表示一个部件通过中间件附接至另一个部件。本文中在一个实施方式中描述的特征可以单独地或与其它特征结合地应用于另一个实施方式，除非该特征在该另一个实施方式中不适用或是另有说明。
本文已经通过上述实施方式进行了说明，但应当理解的是，上述实施方式只是用于举例和说明的目的，而非意在将本文限制于所描述的实施方式范围内。本领域技术人员可以理解的是，根据本文的教导还可以做出更多种的变型和修改，这些变型和修改均落在本文所要求保护的范围以内。

Claims (10)

  1. 一种充放电控制系统，其特征在于，包括：
    充电控制盒，所述充电控制盒包括控制模块、通讯模块、充电端口、放电端口和第一可控开关电路，所述第一可控开关电路用于实现所述充电端口与所述放电端口之间的切换，所述充电端口用于接入电网，所述放电端口用于连接外部用电设备，所述通讯模块用于实现所述控制模块与电动汽车通讯连接；
    充电枪，所述充电枪包括充电电阻、放电电阻和第二可控开关电路，所述第二可控开关电路用于实现所述充电电阻与所述放电电阻之间的切换；
    其中，所述控制模块与所述第一可控开关电路、所述第二可控开关电路以及所述通讯模块信号连接，所述控制模块配置为：
    在所述充电端口接入电网的状态下，并根据所述电动汽车的电池状态信息，控制所述第一可控开关电路进行切换以连通所述充电端口、以及控制所述第二可控开关电路进行切换以连接所述充电电阻，进而形成充电回路，使所述充电枪输出与所述电动汽车的电池相匹配的交流电压或电流。
  2. 如权利要求1所述的充放电控制系统，其特征在于，所述控制模块还配置为：
    在所述充电端口未接入电网且所述外部用电设备接入所述放电端口的状态下，并根据所述电池状态信息，控制所述第一可控开关电路进行切换以连通所述放电端口、以及控制所述第二可控开关电路进行切换以连接所述放电电阻，进而形成放电回路，使所述充电枪输出与电网匹配的交流电。
  3. 如权利要求2所述的充放电控制系统，其特征在于，所述第一可控开关电路包括第一机械开关和第二机械开关，所述第一机械开关的动触点连接所述充电枪的零线，所述第一机械开关的常闭触点连接所述放电端口的零线，所述第一机械开关的常开触点连接所述充电端口的零线；
    所述第二机械开关的动触点连接所述充电枪的火线，所述第二机械开关的常闭触点连接所述放电端口的火线，所述第二机械开关的常开触点连接所述充电端口的火线。
  4. 如权利要求2所述的充放电控制系统，其特征在于，所述第一可控开关电路包括第一固态开关、第二固态开关、第三固态开关和第四固态开关，
    所述第一固态开关连接在所述充电枪的火线与所述放电端口的零线之间；
    所述第二固态开关连接在所述充电枪的零线与所述放电端口的火线之间；
    所述第三固态开关连接在所述充电枪的零线与所述充电端口的零线之间；
    所述第四固态开关连接在所述充电枪的火线与所述充电端口的火线之间。
  5. 如权利要求2所述的充放电控制系统，其特征在于，所述第二可控开关电路包括第三机械开关，所述第三机械开关的动触点连接所述电动汽车的电池管理系统，所述第三机械开关的常闭触点连接所述放电电阻，所述第三机械开关的常开触点连接所述充电电阻。
  6. 如权利要求2所述的充放电控制系统，其特征在于，所述第二可控开关电路包括第一三极管和第二三极管；
    所述第一三极管的基极用于连接所述电动汽车的电池管理系统，所述第一三极管的集电极连接所述充电电阻，所述充电电阻的另一端连接供电电压，所述第一三极管的发射极连接所述充电枪的地线；
    所述第二三极管的基极用于连接所述电动汽车的电池管理系统，所述第二三极管的集电极连接所述放电电阻，所述第二三极管的发射极连接所述充电枪的地线。
  7. 如权利要求1所述的充放电控制系统，其特征在于，所述充电控制盒还包括AC/DC电源模块，其与所述控制模块的输入端连接，用于在所述充电端口接入电网的状态下，给所述控制模块供电。
  8. 如权利要求1所述的充放电控制系统，其特征在于，所述充电控制盒的外部还设置有充电选择按键和放电选择按键，所述充电选择按键与所述放电选择按键接入所述控制模块，所述控制模块配置为：根据所述充电选择按键和所述放电选择按键的触发控制所述第一可控开关电路以及所述第二可控开关电路的切换。
  9. 如权利要求1所述的充放电控制系统，其特征在于，所述充电控制盒还设置有备用电池，所述备用电池与所述控制模块电连接，用于在所述充电端口未接入电网的情况下给所述控制模块供电。
  10. 如权利要求1所述的充放电控制系统，其特征在于，所述通讯模块采用5G模块、4G模块、WIFI模块和蓝牙模块中的任意一种。
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CN216684106U (zh) * 2021-11-30 2022-06-07 长春捷翼汽车零部件有限公司 一种充放电控制系统

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