WO2020107948A1 - Current converter and energy storage system - Google Patents
Current converter and energy storage system Download PDFInfo
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- WO2020107948A1 WO2020107948A1 PCT/CN2019/100607 CN2019100607W WO2020107948A1 WO 2020107948 A1 WO2020107948 A1 WO 2020107948A1 CN 2019100607 W CN2019100607 W CN 2019100607W WO 2020107948 A1 WO2020107948 A1 WO 2020107948A1
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- energy storage
- storage battery
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- current
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
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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
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
Definitions
- the present disclosure relates to the technical field of DC micro-grid (ie, micro-grid, Micro-Grid) equipment, and in particular, to a converter and an energy storage system.
- DC micro-grid ie, micro-grid, Micro-Grid
- the energy storage cabinet is an important component, and the energy storage DC/DC (direct current to direct current converter) in the energy storage cabinet is the connection between the energy storage battery and the DC Busbar bridge.
- DC/DC direct current to direct current converter
- the battery management system and the energy storage DC/DC are independently separated.
- there is data communication between the two it is necessary to sample the same signal, and have the same functional circuit.
- There are problems such as redundant circuit resources, cumbersome electrical wiring, and long communication data links.
- the embodiments of the present disclosure provide a converter and an energy storage system in order to shorten the length of a communication line and improve the reliability of communication.
- It is connected to the energy storage battery, used for managing the energy storage battery, and used for converting the direct current output by the energy storage battery into a required voltage level current.
- the above converter further includes:
- the collection circuit is used for collecting the voltage signal and the current signal of the energy storage battery.
- the above converter further includes:
- Insulation resistance detection circuit for detecting the resistance of the energy storage battery to ground
- the switch control circuit is used to control the contactor.
- the above converter further includes:
- the input terminal is used to receive the direct current output by the energy storage battery
- a battery management component for analyzing and managing the state of the energy storage battery
- the output terminal is used to output the converted current.
- an energy storage system including:
- Energy storage battery used to provide power
- a converter integrated with a battery management function is connected to the energy storage battery for managing the energy storage battery and for converting the direct current output by the energy storage battery into a current of a desired voltage level.
- the converter with integrated battery management function includes:
- the collection circuit is used for collecting the voltage signal and the current signal of the energy storage battery.
- the converter with integrated battery management function includes:
- Insulation resistance detection circuit for detecting the resistance of the energy storage battery to ground
- the switch control circuit is used to control the contactor.
- the converter with integrated battery management function includes:
- the input terminal is used to receive the direct current output by the energy storage battery
- a battery management component for analyzing and managing the state of the energy storage battery
- the energy storage system is located in a DC microgrid system.
- an energy storage cabinet including: an energy storage battery for providing power; a converter integrated with a battery management function, connected to the energy storage battery, and used for It is managed and used to convert the direct current output by the energy storage battery into a current of a required voltage level.
- a converter which integrates a battery management function, manages the energy storage battery through the converter, and converts the current of the voltage level required by the DC output from the energy storage battery into a voltage level .
- FIG. 1 is a structural block diagram of an energy storage cabinet according to an embodiment of the present disclosure
- FIG. 2 is a structural block diagram of some related art energy storage cabinets
- FIG 3 is another structural block diagram of an energy storage cabinet according to an embodiment of the present disclosure.
- FIG. 4 is a schematic diagram of a converter according to an embodiment of the present disclosure.
- the battery management system and the converter are independently separated.
- the same signal needs to be sampled, and the same functional circuit, so that There are problems such as redundant circuit resources, cumbersome electrical wiring, and long communication data links.
- a control unit integrated energy storage system is proposed, which integrates the battery management function into the converter, removes the redundant sampling circuit and insulation resistance detection circuit, and realizes the communication between the two boards, thereby
- the internal space layout and electrical wiring of the energy storage cabinet can be simplified, so as to greatly shorten the length of the communication line, improve communication reliability, and also reduce the volume.
- the energy storage system may be, for example, an energy storage cabinet.
- an energy storage cabinet 10 is provided in this embodiment, as shown in FIG. 1, may include:
- Energy storage battery 101 used to provide power
- the converter 102 with integrated battery management function is connected to the energy storage battery 101 for managing the energy storage battery 101 and for converting the direct current output by the energy storage battery to a current of a voltage level required.
- the converted current may be direct current or alternating current, which can be selected according to needs.
- the converter can realize DC/DC (direct current to direct current) or DC/AC (direct current to alternating current).
- the above-mentioned converter 102 may include: a collection circuit 1021 for collecting voltage and current signals of the energy storage battery; and an insulation resistance detection circuit 1022 for detecting the Insulation resistance of the energy storage battery to the ground; the switch control circuit 1023 is used to control the contactor.
- the contactor is located between the current device and the energy storage battery, and the opening and closing of the contactor can be controlled based on the control signal of the digital control circuit 1023.
- the converter can be reliably disconnected from the battery, and the converter can be pre-charged. For example, when the energy storage system is started, the positive and negative insulation of the energy storage battery is first detected (that is, the insulation resistance detection). After the detection is passed, the switching control circuit sends a control signal to close the contactor to close the contactor To complete the pre-charging of the converter.
- the converter with integrated battery management function can be set as follows: Input terminal 1024, used to receive the DC power output by the energy storage battery: Converter 1025, used to convert the DC power to the required voltage Level of current; output terminal 1026, used to output the converted DC power; battery management component 1027, for example, can be a processor, used to analyze and manage the state of the energy storage battery, for example, by sampling data, analysis of storage Whether the battery needs to be charged, whether it meets the discharge requirements, estimate the remaining power, or alarm for abnormal batteries.
- the resources of the sampling circuit, the insulation resistance detection circuit, and the switching control circuit are integrated, a set of circuits are shared, and the redundant part is deleted, so that the space and resources can be fully utilized. Further, after integrating the two, there is no need to connect external power supply lines and communication signal lines. The communication between the two can be achieved inside the board, reducing external interference, improving communication reliability, and simplifying external electrical The wiring simplifies the space layout in the energy storage cabinet.
- the above energy storage cabinet can be used in a DC microgrid system to supply power to a DC bus in the DC microgrid system.
- a converter which integrates a battery management function; is connected to an energy storage battery to manage the energy storage battery, and is used to convert the DC power output by the energy storage battery to a desired voltage Level of current.
- FIG. 2 it is a schematic diagram of the internal structure of the energy storage cabinet 20 of the related art, wherein the energy storage DCDC 202 and the battery management system 203 are provided separately and independently, and the battery management system 203 is provided in the energy storage battery 201.
- the energy storage DCDC202 and the battery management system 203 are provided with: 1) a sampling circuit for collecting the voltage and current signals of the battery; 2) an insulation impedance detection circuit for detecting the insulation of the battery to the ground; 3)
- the switch control circuit is used to control the contactor in the circuit.
- DCDC is DC to DC (that is, conversion of different DC power values), specifically refers to a converter that realizes bidirectional flow of electrical energy, and is a bridge between energy storage batteries and DC buses, which can output the voltage of energy storage batteries.
- the energy storage battery can also be charged by taking power from the DC bus.
- the insulation resistance detection circuit and the switching control circuit in the energy storage DCDC are idle and need not be used. And the sampling circuit in the energy storage DCDC and the battery management system samples the same battery information.
- the energy storage DCDC needs to provide power supply to the battery management system and requires external electrical wiring; if there is data communication between the two, an external communication signal line connection is also required.
- the integrated energy storage cabinet 30 of the control unit provided in this embodiment may be as shown in FIG. 3, and may include: an energy storage battery 301 and a converter with integrated battery management function 303 (such as energy storage DC/DC) In two parts 302, the battery management function 303 is integrated on the converter 302. Specifically, it integrates the resources of the sampling circuit, the insulation resistance detection circuit, and the switching control circuit, shares a set of circuits, and deletes redundant parts, so that the space and resources can be fully utilized. Further, after integrating the two, there is no need to connect external power supply lines and communication signal lines. The communication between the two can be achieved inside the board, reducing external interference, improving communication reliability, and simplifying external electrical The wiring simplifies the space layout in the energy storage cabinet.
- a converter with integrated battery management function 303 such as energy storage DC/DC
- the battery management function 303 is integrated on the converter 302. Specifically, it integrates the resources of the sampling circuit, the insulation resistance detection circuit, and the switching control circuit, shares a set of circuits, and deletes redundant parts
- the battery management function is integrated into the converter, the two share the sampling circuit and other functional circuits, integrate effective resources and make full use of, simplify the space structure in the energy storage cabinet, reduce the volume; Further, integrating the battery management function into the converter can effectively improve the electrical wiring in the cabinet, and can achieve in-board communication between the two, improving communication reliability.
- the device or module explained in the above embodiments may be implemented by a computer chip or entity, or by a product with a certain function.
- the functions are divided into various modules and described separately.
- the functions of each module may be implemented in one or more software and/or hardware, or a module that implements the same function may be implemented by a combination of multiple sub-modules.
- the device embodiments described above are only schematic.
- the division of the modules is only a division of logical functions. In actual implementation, there may be other divisions, for example, multiple modules or components may be combined or integrated To another system, or some features can be ignored, or not implemented.
- controller in addition to implementing the controller in the form of pure computer-readable program code, it is entirely possible to logically program method steps to make the controller use logic gates, switches, application specific integrated circuits, programmable logic controllers and embedded The same function is realized in the form of a microcontroller or the like. Therefore, such a controller can be regarded as a hardware component, and the device for implementing various functions included therein can also be regarded as a structure within the hardware component. Or even, the means for realizing various functions can be regarded as both a software module of an implementation method and a structure within a hardware component.
- the present application may be described in the general context of computer-executable instructions executed by a computer, such as program modules.
- program modules include routines, programs, objects, components, data structures, classes, etc. that perform specific tasks or implement specific abstract data types.
- the present application may also be practiced in distributed computing environments in which tasks are performed by remote processing devices connected through a communication network.
- program modules may be located in local and remote computer storage media including storage devices.
- the present application can be implemented by means of software plus a necessary general hardware platform.
- the technical solution of the present application can be embodied in the form of a software product in essence or part that contributes to the existing technology, and the computer software product can be stored in a storage medium, such as ROM/RAM, magnetic disk , CD-ROM, etc., including several instructions to enable a computer device (which may be a personal computer, mobile terminal, server, or network device, etc.) to perform the methods described in the embodiments or some parts of the embodiments of the present application.
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Abstract
A current converter (102) and an energy storage system. The current converter (102) is integrated with a battery management function, is connected with an energy storage battery (101), and is used for managing the energy storage battery (101) and converting the direct current outputted by the energy storage battery (101) into the current of a required voltage level. By means of the manner, the present invention solves the problems in the prior of redundant circuit resources, complex electrical wiring, a long communication data link and the like caused due to the separation of the battery management function and the current converter, and achieves the technical effects of shortening the length of a communication line and improving communication reliability.
Description
相关申请的交叉引用Cross-reference of related applications
本申请是以CN申请号为201811429035.1，申请日为2018年11月27日的申请为基础，并主张其优先权，该CN申请的公开内容在此作为整体引入本申请中。This application is based on the application with the CN application number 201811429035.1 and the application date is November 27, 2018, and claims its priority. The disclosure content of the CN application is hereby incorporated into this application as a whole.
本公开涉及直流微网(即微电网，Micro-Grid)设备技术领域，具体而言，涉及一种变流器和储能***。The present disclosure relates to the technical field of DC micro-grid (ie, micro-grid, Micro-Grid) equipment, and in particular, to a converter and an energy storage system.
在直流微网***中，储能柜是重要的组成部分，而储能柜中的储能DC/DC(直流变直流的变流器，Direct current to direct current converter)是连接储能电池和直流母线的桥梁。In the DC micro-grid system, the energy storage cabinet is an important component, and the energy storage DC/DC (direct current to direct current converter) in the energy storage cabinet is the connection between the energy storage battery and the DC Busbar bridge.
在一些储能柜中，电池管理***和储能DC/DC是独立分开的，然而，在实际运行过程中，两者之间存在数据通信、需要采样相同的信号、有相同的功能电路，这样就存在电路资源冗余、电气走线繁琐、通信数据链路长等问题。In some energy storage cabinets, the battery management system and the energy storage DC/DC are independently separated. However, in the actual operation process, there is data communication between the two, it is necessary to sample the same signal, and have the same functional circuit. There are problems such as redundant circuit resources, cumbersome electrical wiring, and long communication data links.
针对上述问题，目前尚未提出有效的解决方案。In response to the above problems, no effective solution has been proposed yet.
发明内容Summary of the invention
本公开实施例提供了一种变流器和储能***，以便缩短通信线长度，提高通信可靠性。The embodiments of the present disclosure provide a converter and an energy storage system in order to shorten the length of a communication line and improve the reliability of communication.
一方面，提供了一种变流器，集成有电池管理功能；On the one hand, it provides a converter with integrated battery management function;
与储能电池连接，用于对所述储能电池进行管理，且用于将所述储能电池输出的直流电转换为所需电压等级电流。It is connected to the energy storage battery, used for managing the energy storage battery, and used for converting the direct current output by the energy storage battery into a required voltage level current.
在一个实施方式中，上述变流器还包括：In an embodiment, the above converter further includes:
采集电路，用于采集所述储能电池的电压信号和电流信号。The collection circuit is used for collecting the voltage signal and the current signal of the energy storage battery.
在一个实施方式中，上述变流器还包括：In an embodiment, the above converter further includes:
绝缘阻抗检测电路，用于检测所述储能电池的对地电阻；Insulation resistance detection circuit for detecting the resistance of the energy storage battery to ground;
开关量控制电路，用于对接触器进行控制。The switch control circuit is used to control the contactor.
在一个实施方式中，上述变流器还包括：In an embodiment, the above converter further includes:
输入端，用于接收所述储能电池输出的直流电；The input terminal is used to receive the direct current output by the energy storage battery;
转换器，用于将直流电转换为所需电压等级的电流；Converter, which is used to convert direct current into current of required voltage level;
电池管理部件，用于分析和管理所述储能电池的状态；A battery management component for analyzing and managing the state of the energy storage battery;
输出端，用于将转换得到的电流输出。The output terminal is used to output the converted current.
另一方面，提供了一种储能***，包括：On the other hand, an energy storage system is provided, including:
储能电池，用于提供电源；Energy storage battery, used to provide power;
集成有电池管理功能的变流器，与所述储能电池连接，用于对所述储能电池进行管理，且用于将所述储能电池输出的直流电转换为所需电压等级的电流。A converter integrated with a battery management function is connected to the energy storage battery for managing the energy storage battery and for converting the direct current output by the energy storage battery into a current of a desired voltage level.
在一个实施方式中，所述集成有电池管理功能的变流器包括：In one embodiment, the converter with integrated battery management function includes:
采集电路，用于采集所述储能电池的电压信号和电流信号。The collection circuit is used for collecting the voltage signal and the current signal of the energy storage battery.
在一个实施方式中，所述集成有电池管理功能的变流器包括：In one embodiment, the converter with integrated battery management function includes:
绝缘阻抗检测电路，用于检测所述储能电池的对地电阻；Insulation resistance detection circuit for detecting the resistance of the energy storage battery to ground;
开关量控制电路，用于对接触器进行控制。The switch control circuit is used to control the contactor.
在一个实施方式中，所述集成有电池管理功能的变流器包括：In one embodiment, the converter with integrated battery management function includes:
输入端，用于接收所述储能电池输出的直流电；The input terminal is used to receive the direct current output by the energy storage battery;
转换器，用于将直流电转换为所需电压等级的电流；Converter, which is used to convert direct current into current of required voltage level;
电池管理部件，用于分析和管理所述储能电池的状态；A battery management component for analyzing and managing the state of the energy storage battery;
输出端，用将转换得到的所需电压等级的电流输出。At the output, use the current output of the desired voltage level that will be converted.
在一个实施方式中，所述储能***位于直流微网***中。In one embodiment, the energy storage system is located in a DC microgrid system.
又一方面，提供了一种储能柜，包括：储能电池，用于提供电源；集成有电池管理功能的变流器，与所述储能电池连接，用于对所述储能电池进行管理，且用于将所述储能电池输出的直流电转换为所需电压等级的电流。In yet another aspect, an energy storage cabinet is provided, including: an energy storage battery for providing power; a converter integrated with a battery management function, connected to the energy storage battery, and used for It is managed and used to convert the direct current output by the energy storage battery into a current of a required voltage level.
在上述实施例中，提供了一种变流器，该变流器集成有电池管理功能，通过变流器对储能电池进行管理，且对储能电池输出的直流电转换所需电压等级的电流。通过上述方式解决了现有的电池管理功能与变流器分开设置所存在的电路资源冗余、电气走线繁琐、通信数据链路长等问题，达到了缩短通信线长度，提高通信可靠性的技术效果。In the above embodiment, a converter is provided, which integrates a battery management function, manages the energy storage battery through the converter, and converts the current of the voltage level required by the DC output from the energy storage battery into a voltage level . The above methods solve the problems of circuit resource redundancy, cumbersome electrical wiring, and long communication data link that exist in the existing battery management function and the converter are provided separately, and achieve the shortening of the communication line length and the improvement of communication reliability. Technical effect.
构成本申请的一部分的附图用来提供对本公开的进一步理解，本公开的示意性实施例及其说明用于解释本公开，并不构成对本公开的不当限定。在附图中：The drawings constituting a part of this application are used to provide a further understanding of the present disclosure. The exemplary embodiments and descriptions of the present disclosure are used to explain the present disclosure, and do not constitute an undue limitation on the present disclosure. In the drawings:
图1是根据本公开实施例的储能柜的结构框图；1 is a structural block diagram of an energy storage cabinet according to an embodiment of the present disclosure;
图2是一些相关技术的储能柜的结构框图；Figure 2 is a structural block diagram of some related art energy storage cabinets;
图3是根据本公开实施例的储能柜的另一结构框图。3 is another structural block diagram of an energy storage cabinet according to an embodiment of the present disclosure.
图4是根据本公开实施例的变流器的示意图。4 is a schematic diagram of a converter according to an embodiment of the present disclosure.
为使本公开的目的、技术方案和优点更加清楚明白，下面结合实施方式和附图，对本公开做进一步详细说明。在此，本公开的示意性实施方式及其说明用于解释本公开，但并不作为对本公开的限定。In order to make the purpose, technical solutions and advantages of the disclosure more clear, the disclosure will be further described in detail in conjunction with the embodiments and the drawings. Here, the exemplary embodiments of the present disclosure and the description thereof are used to explain the present disclosure, but are not intended to limit the present disclosure.
针对现有的储能柜中电池管理***和变流器是独立分开的，然而，在实际运行过程中，两者之间存在数据通信、需要采样相同的信号、有相同的功能电路，这样就存在电路资源冗余、电气走线繁琐、通信数据链路长等问题。在本实施例中提出了一种控制单元集成化的储能***，将电池管理功能集成到变流器中，将冗余的采样电路、绝缘阻抗检测电路删除，实现两者板间通信，从而可以简化储能柜内部空间布局和电气走线，以便大大缩短通信线长度，提高通信可靠性，同时也能减小体积。For the existing energy storage cabinet, the battery management system and the converter are independently separated. However, in the actual operation process, there is data communication between the two, the same signal needs to be sampled, and the same functional circuit, so that There are problems such as redundant circuit resources, cumbersome electrical wiring, and long communication data links. In this embodiment, a control unit integrated energy storage system is proposed, which integrates the battery management function into the converter, removes the redundant sampling circuit and insulation resistance detection circuit, and realizes the communication between the two boards, thereby The internal space layout and electrical wiring of the energy storage cabinet can be simplified, so as to greatly shorten the length of the communication line, improve communication reliability, and also reduce the volume.
在本公开中，储能***例如可以是储能柜。In the present disclosure, the energy storage system may be, for example, an energy storage cabinet.
基于此，在本实施例中提供了一种储能柜10，如图1所示，可以包括：Based on this, an energy storage cabinet 10 is provided in this embodiment, as shown in FIG. 1, may include:
1)储能电池101，用于提供电源；1) Energy storage battery 101, used to provide power;
2)集成有电池管理功能的变流器102，与储能电池101连接，用于对储能电池101进行管理，且用于将储能电池输出的直流电转换所需电压等级的电流。其中，转换为的电流可以是直流电，也可以是交流电，可以根据需要选择，相应的，该变流器可以实现DC/DC(直流变直流)，也可以实现DC/AC(直流变交流)。2) The converter 102 with integrated battery management function is connected to the energy storage battery 101 for managing the energy storage battery 101 and for converting the direct current output by the energy storage battery to a current of a voltage level required. The converted current may be direct current or alternating current, which can be selected according to needs. Correspondingly, the converter can realize DC/DC (direct current to direct current) or DC/AC (direct current to alternating current).
在一些实施例中，如图4所示，上述变流器102可以包括：采集电路1021，用于采集所述储能电池的电压信号和电流信号；绝缘阻抗检测电路1022，用于检测所述储能电池的对地绝缘阻抗；开关量控制电路1023，用于对接触器进行控制。接触器位于电流器和储能电池之间，基于开关量控制电路1023的控制信号可以控制接触器的开通和关断。通过绝缘阻抗检测电路和开关量控制电路的设置，可以实现变流器与电池的可靠断开，以及变流器的预充电。例如，当储能***启动时，首先对储能电池的正、负对地绝缘进行检测(即绝缘阻抗检测)，检测通过后，开关量控制电路发出闭合接触器的控制信号，使接触器闭合，完成变流器的预充电。In some embodiments, as shown in FIG. 4, the above-mentioned converter 102 may include: a collection circuit 1021 for collecting voltage and current signals of the energy storage battery; and an insulation resistance detection circuit 1022 for detecting the Insulation resistance of the energy storage battery to the ground; the switch control circuit 1023 is used to control the contactor. The contactor is located between the current device and the energy storage battery, and the opening and closing of the contactor can be controlled based on the control signal of the digital control circuit 1023. Through the setting of the insulation resistance detection circuit and the switching control circuit, the converter can be reliably disconnected from the battery, and the converter can be pre-charged. For example, when the energy storage system is started, the positive and negative insulation of the energy storage battery is first detected (that is, the insulation resistance detection). After the detection is passed, the switching control circuit sends a control signal to close the contactor to close the contactor To complete the pre-charging of the converter.
在实际实现的时候，集成有电池管理功能的变流器可以按照如下方式设置：输入端1024，用于接收所述储能电池输出的直流电：转换器1025，用于将直流电转换为所需电压等级的电流；输出端1026，用于将转换得到的直流电输出；电池管理部件1027，例如可以是处理器，用于分析和管理所述储能电池的状态，例如，通过采样的数据，分析储能电池是否需要充电，是否符合放电要求，估算剩余电量，或者针对异常的电池进行报警等。In actual implementation, the converter with integrated battery management function can be set as follows: Input terminal 1024, used to receive the DC power output by the energy storage battery: Converter 1025, used to convert the DC power to the required voltage Level of current; output terminal 1026, used to output the converted DC power; battery management component 1027, for example, can be a processor, used to analyze and manage the state of the energy storage battery, for example, by sampling data, analysis of storage Whether the battery needs to be charged, whether it meets the discharge requirements, estimate the remaining power, or alarm for abnormal batteries.
在上例中，整合了采样电路、绝缘阻抗检测电路、开关量控制电路资源，共用一套电路，删除冗余部分，可以充分利用空间和资源。进一步的，将两者集成后，无需再外接供电电源线和通信信号线，在板子内部即可实现两者的通信，减小了外接干扰，提高了通信可靠性，同时又简化了外部的电气走线，简化了储能柜内的空间布局。In the above example, the resources of the sampling circuit, the insulation resistance detection circuit, and the switching control circuit are integrated, a set of circuits are shared, and the redundant part is deleted, so that the space and resources can be fully utilized. Further, after integrating the two, there is no need to connect external power supply lines and communication signal lines. The communication between the two can be achieved inside the board, reducing external interference, improving communication reliability, and simplifying external electrical The wiring simplifies the space layout in the energy storage cabinet.
上述的储能柜可以应用在直流微网***中，用于为直流微网***中的直流母线供电。The above energy storage cabinet can be used in a DC microgrid system to supply power to a DC bus in the DC microgrid system.
即，提供了一种变流器，集成有电池管理功能；与储能电池连接，用于对所述储能电池进行管理，且用于将所述储能电池输出的直流电转换为所需电压等级的电流。That is, a converter is provided, which integrates a battery management function; is connected to an energy storage battery to manage the energy storage battery, and is used to convert the DC power output by the energy storage battery to a desired voltage Level of current.
下面结合一个具体实施例对上述结构进行说明，然而值得注意的是，该具体实施例仅是为了更好地说明本申请，并不构成对本申请的不当限定。The above structure will be described below in conjunction with a specific embodiment, but it is worth noting that this specific embodiment is only for better description of the present application, and does not constitute an undue limitation on the present application.
如图2所示，为相关技术的储能柜20内部结构示意图，其中，储能DCDC202和电池管理***203是分开独立设置的，电池管理***203设置在储能电池201中。其中，在储能DCDC202和电池管理***203中都设置有：1)采样电路，用于采集电池的电压信号和电流信号；2)绝缘阻抗检测电路，用于检测电池的对地绝缘；3)开关量控制电路，用于对电路中的接触器进行控制。As shown in FIG. 2, it is a schematic diagram of the internal structure of the energy storage cabinet 20 of the related art, wherein the energy storage DCDC 202 and the battery management system 203 are provided separately and independently, and the battery management system 203 is provided in the energy storage battery 201. Among them, the energy storage DCDC202 and the battery management system 203 are provided with: 1) a sampling circuit for collecting the voltage and current signals of the battery; 2) an insulation impedance detection circuit for detecting the insulation of the battery to the ground; 3) The switch control circuit is used to control the contactor in the circuit.
其中，DCDC是直流变直流(即不同直流电源值的转换)，具体指的是实现电能双向流动的变流器，是储能电池和直流母线对接的桥梁，既可以将储能电池输出的电压变换到某一值对接直流母线，也可以从直流母线取电实现向储能电池充电。Among them, DCDC is DC to DC (that is, conversion of different DC power values), specifically refers to a converter that realizes bidirectional flow of electrical energy, and is a bridge between energy storage batteries and DC buses, which can output the voltage of energy storage batteries. When it is converted to a certain value and it is connected to the DC bus, the energy storage battery can also be charged by taking power from the DC bus.
然而，在实际运行过程中，储能DCDC中的绝缘阻抗检测电路和开关量控制电路是闲置的，不需要使用。且储能DCDC和电池管理***中的采样电路采样的是相同的电池信息。另外，储能DCDC需要向电池管理***提供电源供电，需要有外部电气走线；两者之间有数据通信，就还需要外部通信信号线连接。However, in actual operation, the insulation resistance detection circuit and the switching control circuit in the energy storage DCDC are idle and need not be used. And the sampling circuit in the energy storage DCDC and the battery management system samples the same battery information. In addition, the energy storage DCDC needs to provide power supply to the battery management system and requires external electrical wiring; if there is data communication between the two, an external communication signal line connection is also required.
在本实施例中所提供的控制单元集成化的储能柜30，可以如图3所示，可以包括：储能电池301和集成电池管理功能303的变流器(如储能DC/DC)302两部分，将电池管理功能303集成在了变流器302上。具体的，整合了采样电路、绝缘阻抗检测电路、开关量控制电路资源，共用一套电路，删除冗余部分，可以充分利用空间和资源。进一步的，将两者集成后，无需再外接供电电源线和通信信号线，在板子内部即可实现两者的通信，减小了外接干扰，提高了通信可靠性，同时又简化了外部的电气走线，简化了储能柜内的空间布局。The integrated energy storage cabinet 30 of the control unit provided in this embodiment may be as shown in FIG. 3, and may include: an energy storage battery 301 and a converter with integrated battery management function 303 (such as energy storage DC/DC) In two parts 302, the battery management function 303 is integrated on the converter 302. Specifically, it integrates the resources of the sampling circuit, the insulation resistance detection circuit, and the switching control circuit, shares a set of circuits, and deletes redundant parts, so that the space and resources can be fully utilized. Further, after integrating the two, there is no need to connect external power supply lines and communication signal lines. The communication between the two can be achieved inside the board, reducing external interference, improving communication reliability, and simplifying external electrical The wiring simplifies the space layout in the energy storage cabinet.
即，在上例中，将电池管理功能集成到变流器中，两者共享采样电路和其他功能电路，整合有效资源并充分利用，简化了储能柜中的空间结构，减小了体积；进一步的，将电池管理功能集成到变流器中，可以有效改善柜内的电气走线，并可以实现两者板内通信，提高通信可靠性。That is, in the above example, the battery management function is integrated into the converter, the two share the sampling circuit and other functional circuits, integrate effective resources and make full use of, simplify the space structure in the energy storage cabinet, reduce the volume; Further, integrating the battery management function into the converter can effectively improve the electrical wiring in the cabinet, and can achieve in-board communication between the two, improving communication reliability.
尽管本申请内容中提到不同的具体实施例，但是，本申请并不局限于必须是行业标准或实施例所描述的情况等，某些行业标准或者使用自定义方式或实施例描述的实施基础上略加修改后的实施方案也可以实现上述实施例相同、等同或相近、或变形后可预料的实施效果。应用这些修改或变形后的数据获取、处理、输出、判断方式等的实施例，仍然可以属于本申请的可选实施方案范围之内。Although different specific embodiments are mentioned in the content of this application, this application is not limited to the situation that must be described by industry standards or embodiments, and some industry standards or the implementation basis described by using custom methods or embodiments The slightly modified embodiment above can also achieve the same, equivalent or similar, or predictable implementation effects of the above-mentioned embodiments. Examples of data acquisition, processing, output, judgment methods, etc. after applying these modifications or deformations, may still fall within the scope of the optional embodiments of the present application.
上述实施例阐明的装置或模块等，具体可以由计算机芯片或实体实现，或者由具有某种功能的产品来实现。为了描述的方便，描述以上装置时以功能分为各种模块分别描述。当然，在实施本申请时可以把各模块的功能在同一个或多个软件和/或硬件中实现，也可以将实现同一功能的模块由多个子模块的组合实现等。以上所描述的装置实施例仅仅是示意性的，例如，所述模块的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个模块或组件可以结合或者可以集成到另一个***，或一些特征可以忽略，或不执行。The device or module explained in the above embodiments may be implemented by a computer chip or entity, or by a product with a certain function. For the convenience of description, when describing the above device, the functions are divided into various modules and described separately. Of course, when implementing this application, the functions of each module may be implemented in one or more software and/or hardware, or a module that implements the same function may be implemented by a combination of multiple sub-modules. The device embodiments described above are only schematic. For example, the division of the modules is only a division of logical functions. In actual implementation, there may be other divisions, for example, multiple modules or components may be combined or integrated To another system, or some features can be ignored, or not implemented.
本领域技术人员也知道，除了以纯计算机可读程序代码方式实现控制器以外，完全可以通过将方法步骤进行逻辑编程来使得控制器以逻辑门、开关、专用集成电路、可编程逻辑控制器和嵌入微控制器等的形式来实现相同功能。因此这种控制器可以被认为是一种硬件部件，而对其内部包括的用于实现各种功能的装置也可以视为硬件部件内的结构。或者甚至，可以将用于实现各种功能的装置视为既可以是实现方法的软件模块又可以是硬件部件内的结构。Those skilled in the art also know that, in addition to implementing the controller in the form of pure computer-readable program code, it is entirely possible to logically program method steps to make the controller use logic gates, switches, application specific integrated circuits, programmable logic controllers and embedded The same function is realized in the form of a microcontroller or the like. Therefore, such a controller can be regarded as a hardware component, and the device for implementing various functions included therein can also be regarded as a structure within the hardware component. Or even, the means for realizing various functions can be regarded as both a software module of an implementation method and a structure within a hardware component.
本申请可以在由计算机执行的计算机可执行指令的一般上下文中描述，例如程序模块。一般地，程序模块包括执行特定任务或实现特定抽象数据类型的例程、程序、对象、组件、数据结构、类等等。也可以在分布式计算环境中实践本申请，在这些分布式计算环境中，由通过通信网络而被连接的远程处理设备来执行任务。在分布式计算环境中，程序模块可以位于包括存储设备在内的本地和远程计算机存储介质中。The present application may be described in the general context of computer-executable instructions executed by a computer, such as program modules. Generally, program modules include routines, programs, objects, components, data structures, classes, etc. that perform specific tasks or implement specific abstract data types. The present application may also be practiced in distributed computing environments in which tasks are performed by remote processing devices connected through a communication network. In a distributed computing environment, program modules may be located in local and remote computer storage media including storage devices.
通过以上的实施方式的描述可知，本领域的技术人员可以清楚地了解到本申请可借助软件加必需的通用硬件平台的方式来实现。基于这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分可以以软件产品的形式体现出来，该计算机软件产品可以存储在存储介质中，如ROM/RAM、磁碟、光盘等，包括若干指令用以使得一台计算机设备(可以是个人计算机，移动终端，服务器，或者网络设备等)执行本申请各个实施例或者实施例的某些部分所述的方法。It can be known from the description of the above embodiments that those skilled in the art can clearly understand that the present application can be implemented by means of software plus a necessary general hardware platform. Based on this understanding, the technical solution of the present application can be embodied in the form of a software product in essence or part that contributes to the existing technology, and the computer software product can be stored in a storage medium, such as ROM/RAM, magnetic disk , CD-ROM, etc., including several instructions to enable a computer device (which may be a personal computer, mobile terminal, server, or network device, etc.) to perform the methods described in the embodiments or some parts of the embodiments of the present application.
本说明书中的各个实施例采用递进的方式描述，各个实施例之间相同或相似的部分互相参见即可，每个实施例重点说明的都是与其他实施例的不同之处。本申请可用于众多通用或专用的计算机***环境或配置中。例如：个人计算机、服务器计算机、手持设备或便 携式设备、平板型设备、多处理器***、基于微处理器的***、置顶盒、可编程的电子设备、网络PC、小型计算机、大型计算机、包括以上任何***或设备的分布式计算环境等等。The embodiments in this specification are described in a progressive manner. The same or similar parts between the embodiments can be referred to each other. Each embodiment focuses on the differences from the other embodiments. This application can be used in many general or special computer system environments or configurations. For example: personal computers, server computers, handheld or portable devices, tablet devices, multiprocessor systems, microprocessor-based systems, set-top boxes, programmable electronic devices, network PCs, small computers, mainframe computers, including the above Distributed computing environment for any system or device, etc.
虽然通过实施例描绘了本申请，本领域普通技术人员知道，本申请有许多变形和变化而不脱离本申请的精神，希望所附的实施方式包括这些变形和变化而不脱离本申请。Although the present application is described through examples, those of ordinary skill in the art know that there are many variations and changes in the present application without departing from the spirit of the application, and it is hoped that the accompanying embodiments include these variations and changes without departing from the application.
Claims (10)
- 一种变流器，其特征在于，集成有电池管理功能；A converter characterized by integrated battery management function;与储能电池连接，用于对所述储能电池进行管理，且用于将所述储能电池输出的直流电转换为所需电压等级电流。It is connected to the energy storage battery, used for managing the energy storage battery, and used for converting the direct current output by the energy storage battery into a required voltage level current.
- 根据权利要求1所述的变流器，其特征在于，还包括：The converter according to claim 1, further comprising:输入端，用于接收所述储能电池输出的直流电；The input terminal is used to receive the direct current output by the energy storage battery;转换器，用于将直流电转换为所需电压等级的电流；Converter, which is used to convert direct current into current of required voltage level;输出端，用于将转换得到的电流输出；The output terminal is used to output the converted current;电池管理部件，用于分析和管理所述储能电池的状态。The battery management component is used to analyze and manage the state of the energy storage battery.
- 根据权利要求1-2任一项所述的变流器，其特征在于，还包括：The converter according to any one of claims 1-2, further comprising:采集电路，用于采集所述储能电池的电压信号和电流信号。The collection circuit is used for collecting the voltage signal and the current signal of the energy storage battery.
- 根据权利要求1-2任一项所述的变流器，其特征在于，还包括：The converter according to any one of claims 1-2, further comprising:绝缘阻抗检测电路，用于检测所述储能电池的对地绝缘阻抗；Insulation resistance detection circuit for detecting the insulation resistance of the energy storage battery to ground;开关量控制电路，用于对接触器进行控制。The switch control circuit is used to control the contactor.
- 一种储能***，其特征在于，包括：An energy storage system is characterized by comprising:储能电池，用于提供电源；Energy storage battery, used to provide power;集成有电池管理功能的变流器，与所述储能电池连接，用于对所述储能电池进行管理，且用于将所述储能电池输出的直流电转换为所需电压等级的电流。A converter integrated with a battery management function is connected to the energy storage battery for managing the energy storage battery and for converting the direct current output by the energy storage battery into a current of a desired voltage level.
- 根据权利要求5所述的储能***，其特征在于，所述集成有电池管理功能的变流器包括：The energy storage system according to claim 5, wherein the converter integrated with a battery management function includes:输入端，用于接收所述储能电池输出的直流电；The input terminal is used to receive the direct current output by the energy storage battery;转换器，用于将直流电转换为所需电压等级的电流；Converter, which is used to convert direct current into current of required voltage level;输出端，用将转换得到的所需电压等级的电流输出；At the output end, use the current output of the required voltage level obtained by the conversion;电池管理部件，用于分析和管理所述储能电池的状态。The battery management component is used to analyze and manage the state of the energy storage battery.
- 根据权利要求5所述的储能***，其特征在于，所述集成有电池管理功能的变流器包括：The energy storage system according to claim 5, wherein the converter integrated with a battery management function includes:采集电路，用于采集所述储能电池的电压信号和电流信号。The collection circuit is used for collecting the voltage signal and the current signal of the energy storage battery.
- 根据权利要求5所述的储能***，其特征在于，所述集成有电池管理功能的变流器包括：The energy storage system according to claim 5, wherein the converter integrated with a battery management function includes:绝缘阻抗检测电路，用于检测所述储能电池的对地绝缘阻抗；Insulation resistance detection circuit for detecting the insulation resistance of the energy storage battery to ground;开关量控制电路，用于对接触器进行控制。The switch control circuit is used to control the contactor.
- 根据权利要求5至8中任一项所述的储能***，其特征在于，所述储能***位于直流微网***中。The energy storage system according to any one of claims 5 to 8, wherein the energy storage system is located in a DC microgrid system.
- 根据权利要求5至8中任一项所述的储能***，其特征在于，所述储能***为储能柜。The energy storage system according to any one of claims 5 to 8, wherein the energy storage system is an energy storage cabinet.
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| CN206077250U (en) * | 2016-10-12 | 2017-04-05 | 深圳市沃特玛电池有限公司 | Energy accumulation current converter |
| CN109494975A (en) * | 2018-11-27 | 2019-03-19 | 珠海格力电器股份有限公司 | Current transformer and energy-storage system |
| CN209435107U (en) * | 2018-11-27 | 2019-09-24 | 珠海格力电器股份有限公司 | Current transformer, energy-storage system and energy storage cabinet |
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2018
- 2018-11-27 CN CN201811429035.1A patent/CN109494975A/en active Pending
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2019
- 2019-08-14 WO PCT/CN2019/100607 patent/WO2020107948A1/en active Application Filing
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| CN206077250U (en) * | 2016-10-12 | 2017-04-05 | 深圳市沃特玛电池有限公司 | Energy accumulation current converter |
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| CN209435107U (en) * | 2018-11-27 | 2019-09-24 | 珠海格力电器股份有限公司 | Current transformer, energy-storage system and energy storage cabinet |
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