CN204348822U - A kind of redox flow cell device - Google Patents
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Abstract
一种液流电池装置，包括液流电池或液流电池组、正极高位电解液储液罐、正极低位电解液储液罐、负极高位电解液储液罐以及负极低位电解液储液罐，正极高位电解液储液罐通过管路与液流电池或液流电池组的正极上端口相连，正极低位电解液储液罐通过管路与液流电池或液流电池组的正极下端口相连；负极高位电解液储液罐通过管路与液流电池或液流电池组的负极上端口相连，负极低位电解液储液罐通过管路与液流电池或液流电池组的负极下端口相连；本实用新型把充电过程中消耗的部分泵功转化为势能储存起来，从而减小了放电过程泵功消耗，达到节能效果，同时，放电过程中正、负极电解液离子浓度基本恒定，可保证充放电过程电压的稳定。
A flow battery device, comprising a flow battery or a flow battery pack, a positive high-level electrolyte storage tank, a positive low-level electrolyte storage tank, a negative high-level electrolyte storage tank, and a negative low-level electrolyte storage tank, the positive electrode The high-level electrolyte storage tank is connected to the positive upper port of the flow battery or flow battery pack through pipelines, and the positive low-level electrolyte storage tank is connected to the positive lower port of the flow battery or flow battery pack through pipelines; The high-level electrolyte storage tank is connected to the upper port of the negative electrode of the flow battery or the flow battery pack through the pipeline, and the low-level electrolyte storage tank of the negative electrode is connected to the lower port of the negative pole of the flow battery or the flow battery pack through the pipeline; The utility model converts part of the pump power consumed in the charging process into potential energy and stores it, thereby reducing the pump power consumption in the discharging process and achieving energy-saving effects. voltage stability.
Description
技术领域 technical field
本实用新型涉及利用电化学反应进行化学储能技术领域，特别涉及一种液流电池装置。 The utility model relates to the technical field of chemical energy storage by electrochemical reaction, in particular to a liquid flow battery device.
背景技术 Background technique
能源是推动社会进步和人类赖以生存的物质基础。随着社会和经济的发展，全球化石能源消耗的速度逐年增加，并带来全球环境变暖、生态破坏等严重的环境问题。展望人类未来的能源，除合理的开发和利用煤、石油、天然气，重视水力的开发外，需要进一步开发新能源，主要是核能、太阳能、生物质能、氢能以及各种可再生能源，如地热能、海洋能、风能等，从而构成一个以核能为主角的综合性的世界能源体系。太阳能、风能和海洋能等可再生能源发电具有波动性、随机性的不利特征，会对电网的稳定安全运行造成负面影响。储能技术具有动态吸收能量并适时释放的特点，是保证高效智能电网稳定运行、实现可再生能源大规模应用的关键技术。目前，具有较好应用前景的电力储能技术有抽水电站、压缩空气、飞轮、超导磁、超级电容器、蓄电池和液流电池。 Energy is the material basis for promoting social progress and human survival. With the development of society and economy, the rate of global fossil energy consumption is increasing year by year, which has brought serious environmental problems such as global warming and ecological damage. Looking forward to the future energy of mankind, in addition to rationally developing and utilizing coal, oil, and natural gas, and emphasizing the development of hydraulic power, it is necessary to further develop new energy sources, mainly nuclear energy, solar energy, biomass energy, hydrogen energy, and various renewable energy sources, such as Geothermal energy, ocean energy, wind energy, etc. constitute a comprehensive world energy system with nuclear energy as the leading role. Renewable energy generation such as solar energy, wind energy, and ocean energy has the unfavorable characteristics of volatility and randomness, which will have a negative impact on the stable and safe operation of the power grid. Energy storage technology has the characteristics of dynamically absorbing energy and releasing it in a timely manner. It is a key technology to ensure the stable operation of high-efficiency smart grids and realize the large-scale application of renewable energy. At present, electric energy storage technologies with good application prospects include pumped hydropower stations, compressed air, flywheels, superconducting magnets, supercapacitors, batteries and flow batteries.
液流电池是一种新型蓄电储能系统，利用正负极电解液分开，各自循环的一种高性能蓄电池，并且其电堆和电解液储槽相互分离的特殊构造，因此，充放电功率与容量可独立设计，具有较高的灵活性。同时液流电池还具有高速响应特性。因此液流电池具有容量高、使用领域广、循环使用寿命长的特点，故在很多领域具有良好的发展前景。 The liquid flow battery is a new type of energy storage system. It utilizes a high-performance battery that separates the positive and negative electrolytes and circulates them separately, and has a special structure in which the stack and the electrolyte storage tank are separated from each other. Therefore, the charging and discharging power And capacity can be designed independently, with high flexibility. At the same time, the flow battery also has high-speed response characteristics. Therefore, the liquid flow battery has the characteristics of high capacity, wide application field and long cycle life, so it has good development prospects in many fields.
液流电池工作时，通过导液泵推动正负极电解液不断循环流动，需要大量泵功，同时随着循环流动进行，正负极电解液高低价态离子浓度不断变化，使得放电过程的输出电压不断变化，同时由于存在很大的浓差极化现象，进 而恶化液流电池充放电过程中的SOC状态。所以可以采取一些措施来改进液流电池装置工作模式，降低循环流动所需泵功，并改善液流电池充放电性能。 When the flow battery is working, the positive and negative electrolytes are continuously circulated through the liquid guide pump, which requires a lot of pump work. At the same time, with the circulation, the concentration of high and low valence ions in the positive and negative electrolytes changes continuously, making the discharge process The output voltage is constantly changing, and at the same time, due to the large concentration polarization phenomenon, the SOC state during the charging and discharging process of the flow battery will be deteriorated. Therefore, some measures can be taken to improve the working mode of the flow battery device, reduce the pump work required for circulating flow, and improve the charge and discharge performance of the flow battery.
发明内容 Contents of the invention
为了克服上述现有技术的缺点，本实用新型的目的在于提供一种液流电池装置，可以减小氧化还原液流电池装置电解液循环流动泵功，且放电过程输出电压稳定，具有成本低廉，操作简单的特点。 In order to overcome the above-mentioned shortcomings of the prior art, the purpose of this utility model is to provide a liquid flow battery device, which can reduce the pump work of the electrolyte circulation flow of the redox flow battery device, and the output voltage is stable during the discharge process, and has low cost. The characteristics of simple operation.
为了实现上述目的，本实用新型采用的技术方案是： In order to achieve the above object, the technical solution adopted by the utility model is:
一种液流电池装置，包括液流电池或液流电池组8、正极高位电解液储液罐5、正极低位电解液储液罐4、负极高位电解液储液罐7以及负极低位电解液储液罐6，其中： A flow battery device, comprising a flow battery or a flow battery pack 8, a positive high-level electrolyte storage tank 5, a positive low-level electrolyte storage tank 4, a negative high-level electrolyte storage tank 7, and a negative low-level electrolyte storage tank Liquid tank 6, wherein:
所述正极高位电解液储液罐5通过管路与液流电池或液流电池组8的正极上端口相连，在其连通管路上设置有阀门一21，所述正极低位电解液储液罐4通过管路与液流电池或液流电池组8的正极下端口相连； The positive high-level electrolyte storage tank 5 is connected to the positive upper port of the flow battery or flow battery pack 8 through a pipeline, and a valve-21 is arranged on the communication pipeline, and the positive low-level electrolyte storage tank 4 Connect to the lower port of the positive electrode of the flow battery or the flow battery pack 8 through a pipeline;
所述负极高位电解液储液罐7通过管路与液流电池或液流电池组8的负极上端口相连，在其连通管路上设置有阀门二22，所述负极低位电解液储液罐6通过管路与液流电池或液流电池组8的负极下端口相连。 The negative high-level electrolyte storage tank 7 is connected to the upper port of the negative electrode of the flow battery or flow battery pack 8 through a pipeline, and a valve 222 is arranged on the communication pipeline, and the negative low-level electrolyte storage tank 6 It is connected to the lower port of the negative electrode of the flow battery or the flow battery pack 8 through a pipeline.
所述正极高位电解液储液罐5的空间布置位势高于正极低位电解液储液罐4的空间布置位势，所述负极高位电解液储液罐7的空间布置位势高于负极低位电解液储液罐6的空间布置位势。 The spatial layout potential of the positive high-level electrolyte storage tank 5 is higher than the spatial layout potential of the positive low-level electrolyte storage tank 4, and the spatial layout potential of the negative high-level electrolyte storage tank 7 is higher than the negative low-level electrolyte storage tank 7. The spatial arrangement potential of the electrolyte liquid storage tank 6 .
所述正极高位电解液储液罐5中的正极电解液离子价态高于所述正极低位电解液储液罐4中的正极电解液离子价态；所述负极高位电解液储液罐7中的负极电解液离子价态低于负极低位电解液储液罐6中的负极电解液离子价态。 The ion valence state of the positive electrode electrolyte in the positive high-level electrolyte liquid storage tank 5 is higher than the positive electrode electrolyte ion valence state in the positive low-level electrolyte liquid storage tank 4; The ion valence state of the negative electrode electrolyte is lower than the ion valence state of the negative electrode electrolyte in the negative electrode low electrolyte storage tank 6 .
所述阀门一21和阀门二22为液体输送阀门。 The first valve 21 and the second valve 22 are liquid delivery valves.
所述正极低位电解液储液罐4与液流电池或液流电池组8的正极下端口的连通管路上设置有导液泵一11，通过导液泵一11经液流电池或液流电池组8的正极空间实现充电时储存正极电解液的储液罐的导通过程；所述负极 低位电解液储液罐6与液流电池或液流电池组的负极下端口的连通管路上设置有导液泵二12，通过导液泵二12经液流电池或液流电池组8的负极空间实现充电时储存负极电解液的储液罐的导通过程。这种单向的充电方式，正、负极低位电解液储液罐中的电解液离子浓度始终不变，参与电化学反应的电解液离子浓度不变，降低了充电过程浓差极化的影响，改善了液流电池在充电过程中的SOC状态。同时提高了电解液的利用率，进而节省了液流电池的投资成本。 The communication pipeline between the positive electrode lower electrolyte storage tank 4 and the lower port of the positive electrode of the flow battery or the flow battery pack 8 is provided with a guide pump-11, through which the liquid guide pump-11 passes through the flow battery or the flow battery. The positive electrode space of the group 8 realizes the conduction process of the liquid storage tank storing the positive electrode electrolyte during charging; the communication pipeline between the negative electrode low electrolyte liquid storage tank 6 and the negative electrode lower port of the flow battery or the flow battery pack is provided with The liquid conduction pump 2 12 realizes the conduction process of the liquid storage tank storing the negative electrode electrolyte during charging through the liquid conduction pump 2 12 through the negative electrode space of the flow battery or the flow battery pack 8 . With this one-way charging method, the concentration of electrolyte ions in the low-level electrolyte storage tanks of the positive and negative electrodes remains unchanged, and the concentration of electrolyte ions participating in the electrochemical reaction remains unchanged, which reduces the influence of concentration polarization during charging. Improved the SOC state of the flow battery during charging. At the same time, the utilization rate of the electrolyte is improved, thereby saving the investment cost of the flow battery.
所述正极高位电解液储液罐5和正极低位电解液储液罐4的空间布置存在相对位势差，依靠二者电解液之间的液位差，在重力场的作用下，通过控制阀门一21的开度，正极高位电解液储液罐5中的电解液以恒定流量，经液流电池或液流电池组8的正极空间实现放电时储存正极电解液的储液罐的导通过程；所述负极高位电解液储液罐7和负极低位电解液储液罐6的空间布置存在相对位势差，依靠二者电解液之间的液位差，在重力场的作用下，通过控制阀门二22的开度，负极高位电解液储液罐7中的电解液以恒定流量，经液流电池或液流电池组8的负极空间实现放电时储存负极电解液的储液罐的导通过程。这种单向的放电方式，正、负极高位电解液储液罐中的电解液离子浓度始终不变，参与电化学反应的电解液离子浓度不变，使得充放电过程的输出电压基本保持稳定，并降低了放电过程浓差极化的影响，改善了液流电池在放电过程中的SOC状态。特别是，放电过程中电解液的流动引入了位势差引起的势能，显著降低了泵功消耗。即充电过程消耗的泵功机械能转化为势能储存起来，推动放电过程电解液的流动，达到节能效果。 There is a relative potential difference in the spatial arrangement of the positive high-level electrolyte liquid storage tank 5 and the positive low-level electrolyte liquid storage tank 4, relying on the liquid level difference between the two electrolytes, under the action of the gravitational field, through the control With the opening of valve one 21, the electrolyte in the positive high-level electrolyte liquid storage tank 5 passes through the positive electrode space of the flow battery or flow battery pack 8 at a constant flow rate to realize the conduction of the liquid storage tank storing the positive electrode electrolyte during discharge. process; there is a relative potential difference in the space arrangement of the negative high-level electrolyte liquid storage tank 7 and the negative electrode low-level electrolyte liquid storage tank 6, relying on the liquid level difference between the two electrolytes, under the action of the gravitational field, through Control the opening of the valve two 22, and the electrolyte in the negative high-level electrolyte storage tank 7 will flow through the negative electrode space of the flow battery or the flow battery pack 8 at a constant flow rate to realize the conduction of the liquid storage tank storing the negative electrode electrolyte during discharge. through the process. In this one-way discharge mode, the concentration of electrolyte ions in the positive and negative high-level electrolyte storage tanks remains unchanged, and the concentration of electrolyte ions participating in the electrochemical reaction remains unchanged, so that the output voltage during the charging and discharging process remains basically stable. And reduce the influence of concentration polarization in the discharge process, and improve the SOC state of the flow battery in the discharge process. In particular, the flow of the electrolyte during the discharge process introduces the potential energy caused by the potential difference, which significantly reduces the pump work consumption. That is, the pump mechanical energy consumed in the charging process is converted into potential energy and stored to promote the flow of electrolyte in the discharging process to achieve energy-saving effects.
所述正极高位电解液储液罐5和正极低位电解液储液罐4之间连接有压力平衡管一31，负极高位电解液储液罐7和负极低位电解液储液罐6之间连接有压力平衡管二32。 A pressure balance pipe 31 is connected between the positive high-level electrolyte liquid storage tank 5 and the positive low-level electrolyte liquid storage tank 4, and the negative high-level electrolyte liquid storage tank 7 and the negative low-level electrolyte liquid storage tank 6 are connected. There are two pressure balance pipes 32.
由于正负极储液罐分别与外界隔绝，所以在电解液流动过程中会造成高、低位储液罐压力不平衡，通过压力平衡管使高、低位储液罐上下导通，消除压力变化的影响。 Since the positive and negative liquid storage tanks are isolated from the outside world, the pressure of the high and low liquid storage tanks will be unbalanced during the flow of the electrolyte. The pressure balance tube will make the high and low liquid storage tanks conduct up and down to eliminate the pressure change. Influence.
与现有技术相比，本实用新型的有益效果是： Compared with the prior art, the beneficial effects of the utility model are:
1)充电过程中消耗的泵能转化为势能储存起来，用于放电过程，增大了放电容量。 1) The pump energy consumed in the charging process is converted into potential energy and stored for the discharge process, increasing the discharge capacity.
2)充放电过程输出电压稳定。 2) The output voltage is stable during charging and discharging.
3)浓差极化影响显著减小。 3) The effect of concentration polarization is significantly reduced.
4)电解液利用率提高，降低投资成本。 4) The utilization rate of the electrolyte is improved and the investment cost is reduced.
5)系统改造投资成本低廉。 5) The investment cost of system transformation is low.
综合来看，本实用新型的液流电池装置具有节能、输出电压稳定、低成本和结构简单等优势，在大规模电力储能领域有着广阔的应用前景。 On the whole, the liquid flow battery device of the present invention has the advantages of energy saving, stable output voltage, low cost and simple structure, and has broad application prospects in the field of large-scale electric energy storage.
附图说明 Description of drawings
图1为本实用新型一种液流电池装置结构示意图。 Fig. 1 is a schematic structural diagram of a liquid flow battery device of the present invention.
图2为本实用新型一种液流电池装置充电运行模式结构示意图。 Fig. 2 is a schematic structural diagram of a charging operation mode of a flow battery device of the present invention.
图3为本实用新型一种液流电池装置放电运行模式结构示意图。 Fig. 3 is a schematic structural diagram of a discharge operation mode of a flow battery device of the present invention.
具体实施方式 Detailed ways
下面结合附图和实施例详细说明本实用新型的实施方式。 The implementation of the utility model will be described in detail below in conjunction with the accompanying drawings and examples.
图1给出了本实用新型一种液流电池装置结构示意图，主要包括： Figure 1 shows a schematic structural diagram of a liquid flow battery device of the present invention, which mainly includes:
液流电池或液流电池组8、正极高位电解液储液罐5、正极低位电解液储液罐4、负极高位电解液储液罐7以及负极低位电解液储液罐6等。正极高位电解液储液罐5的空间布置位势高于正极低位电解液储液罐4的空间布置位势，负极高位电解液储液罐7的空间布置位势高于负极低位电解液储液罐6的空间布置位势。正极高位电解液储液罐5中的正极电解液离子价态高于所述正极低位电解液储液罐4中的正极电解液离子价态；负极高位电解液储液罐7中的负极电解液离子价态低于负极低位电解液储液罐6中的负极电解液离子价态。 Flow battery or flow battery pack 8, positive high-level electrolyte storage tank 5, positive low-level electrolyte storage tank 4, negative high-level electrolyte storage tank 7, negative low-level electrolyte storage tank 6, etc. The spatial layout potential of the positive high-level electrolyte storage tank 5 is higher than the spatial layout potential of the positive low-level electrolyte storage tank 4, and the spatial layout potential of the negative high-level electrolyte storage tank 7 is higher than that of the negative low-level electrolyte storage tank. The spatial arrangement potential of tank 6. The ion valence state of the positive electrode electrolyte in the positive high-level electrolyte liquid storage tank 5 is higher than the positive electrode electrolyte ion valence state in the positive low-level electrolyte liquid storage tank 4; the negative electrode electrolyte in the negative high-level electrolyte liquid storage tank 7 The ion valence state is lower than the ion valence state of the negative electrode electrolyte in the negative electrode low electrolyte liquid storage tank 6 .
本实用新型的具体操作方法是： Concrete method of operation of the present utility model is:
由于该液流电池装置可以实现充电和放电两个过程，因此其具体操作主要分为两个运行模式： Since the flow battery device can realize two processes of charging and discharging, its specific operation is mainly divided into two operating modes:
(1)充电过程：如图2，本实用新型一种液流电池装置充电运行模式结构示意图所示。正极低位电解液储液罐4与液流电池或液流电池组8的正极下端口的连通管路上设置有导液泵一11，正极低位电解液储液罐4中的电解液通过导液泵一11经液流电池或液流电池组8的正极空间流向正极高位电解液储液罐5，实现充电时储存正极电解液的储液罐的导通过程。负极低位电解液储液罐6与液流电池或液流电池组8的负极下端口的连通管路上设置有导液泵二12，负极低位电解液储液罐6中的电解液通过导液泵二12经液流电池或液流电池组8的负极空间流向负极高位电解液储液罐7，实现充电时储存负极电解液的储液罐的导通过程。这种单向的充电方式，正极低位电解液储液罐4和负极低位电解液储液罐6中的电解液离子浓度始终不变，参与电化学反应的电解液离子浓度不变，降低了充电过程浓差极化的影响，改善了液流电池在充电过程中的SOC状态。同时提高了电解液的利用率，进而节省了液流电池的投资成本。 (1) Charging process: As shown in Figure 2, a structural schematic diagram of a charging operation mode of a flow battery device of the present invention is shown. A liquid guide pump-11 is arranged on the communication pipeline between the positive electrode low electrolyte liquid storage tank 4 and the positive electrode lower port of the flow battery or flow battery pack 8, and the electrolyte in the positive electrode low electrolyte liquid storage tank 4 passes through the liquid guide pump -11 flows through the positive electrode space of the flow battery or the flow battery pack 8 to the positive high-level electrolyte liquid storage tank 5, realizing the conduction process of the liquid storage tank storing the positive electrode electrolyte during charging. On the communication pipeline between the negative electrode low-level electrolyte liquid storage tank 6 and the negative electrode lower port of the flow battery or flow battery pack 8, a liquid guide pump 2 12 is arranged, and the electrolyte in the negative electrode low-level electrolyte liquid storage tank 6 passes through the liquid guide pump. Two 12 flow through the negative electrode space of the flow battery or the flow battery pack 8 to the negative high-level electrolyte liquid storage tank 7, so as to realize the conduction process of the liquid storage tank storing the negative electrode electrolyte during charging. In this one-way charging mode, the electrolyte ion concentration in the positive electrode low-level electrolyte liquid storage tank 4 and the negative electrode low-level electrolyte liquid storage tank 6 remains unchanged, and the electrolyte ion concentration participating in the electrochemical reaction remains unchanged, which reduces the charging time. The influence of process concentration polarization improves the SOC state of the flow battery during charging. At the same time, the utilization rate of the electrolyte is improved, thereby saving the investment cost of the flow battery.
该充电过程中，正极电解液由正极低位电解液储液罐4依靠导液泵一11流向正极高位电解液储液罐5，负极电解液由负极低位电解液储液罐6依靠导液泵二12流向负极高位电解液储液罐7。此过程需要消耗泵功。 During this charging process, the positive electrode electrolyte flows from the positive electrode low-level electrolyte liquid storage tank 4 to the positive high-level electrolyte liquid storage tank 5 by relying on the liquid guide pump 11, and the negative electrode electrolyte flows from the negative electrode low-level electrolyte liquid storage tank 6 by relying on the liquid guide pump 2 12 flows to the negative high level electrolyte liquid storage tank 7. This process consumes pump power.
(2)放电过程：如图3，本实用新型一种液流电池装置放电运行模式结构示意图所示。正极高位电解液储液罐5和正极低位电解液储液罐4的空间布置存在相对位势差，依靠它们电解液之间的液位差，在重力场的作用下，通过控制阀门一21的开度，正极高位电解液储液罐5中的电解液以恒定流量，经液流电池或液流电池组8的正极空间，流向正极高位电解液储液罐4，实现放电时储存正极电解液的储液罐的导通过程。负极高位电解液储液罐7和负极低位电解液储液罐6的空间布置存在相对位势差，依靠它们电解液之间的液位差，在重力场的作用下，通过控制阀门二22开度，负极高位电解液储液罐7中的电解液以恒定流量，经液流电池或液流电池组的负极空间，流向负极低位电解液储液罐6，实现放电时储存负极电解液的储液罐的导通过程。这种单向的放电方式，正极高位电解液储液罐5和负极高位电解液储液罐7 中的电解液离子浓度始终不变，参与电化学反应的电解液离子浓度不变，使得放电过程的输出电压基本保持稳定，并降低了放电过程浓差极化的影响，改善了液流电池在放电过程中的SOC状态。同时也提高了电解液的利用率，进而节省了液流电池的投资成本。更重要的是，放电过程中电解液的流动只需位势差引起的势能，不需要泵功。即充电过程消耗的泵功机械能转化为势能储存起来，推动放电过程电解液的流动，达到节能效果。 (2) Discharging process: as shown in Fig. 3 , a schematic structural diagram of a discharge operation mode of a flow battery device of the present invention is shown. There is a relative potential difference in the spatial arrangement of the positive high-level electrolyte liquid storage tank 5 and the positive low-level electrolyte liquid storage tank 4. Depending on the liquid level difference between their electrolytes, under the action of the gravitational field, through the control valve 21 The electrolyte in the positive high-level electrolyte liquid storage tank 5 flows through the positive space of the flow battery or the flow battery pack 8 at a constant flow rate to the positive high-level electrolyte liquid storage tank 4, so as to store the positive electrode electrolysis during discharge. The conduction process of the liquid storage tank. There is a relative potential difference in the spatial arrangement of the negative high-level electrolyte liquid storage tank 7 and the negative electrode low-level electrolyte liquid storage tank 6, relying on the liquid level difference between their electrolytes, under the action of the gravity field, through the control valve 222 to open At a constant flow rate, the electrolyte in the negative high-level electrolyte liquid storage tank 7 flows through the negative electrode space of the flow battery or flow battery pack to the negative electrode low-level electrolyte liquid storage tank 6, so as to store the negative electrode electrolyte during discharge. The conduction process of the liquid tank. In this unidirectional discharge mode, the concentration of electrolyte ions in the positive high-level electrolyte storage tank 5 and the negative high-level electrolyte storage tank 7 is always constant, and the concentration of electrolyte ions participating in the electrochemical reaction is constant, making the discharge process The output voltage of the battery is basically stable, and the influence of concentration polarization during the discharge process is reduced, and the SOC state of the flow battery during the discharge process is improved. At the same time, the utilization rate of the electrolyte is also improved, thereby saving the investment cost of the flow battery. More importantly, the flow of the electrolyte only needs the potential energy caused by the potential difference during the discharge process, and no pump work is required. That is, the pump mechanical energy consumed in the charging process is converted into potential energy and stored to promote the flow of electrolyte in the discharging process to achieve energy-saving effects.
该放电过程中，正极电解液由正极高位电解液储液罐5依靠位势差流向正极高位电解液储液罐4，负极电解液由负极高位电解液储液罐7依靠位势差流向负极低位电解液储液罐6。此过程不需要消耗泵功。 During the discharge process, the positive electrode electrolyte flows from the positive high-level electrolyte liquid storage tank 5 to the positive high-level electrolyte liquid storage tank 4 relying on the potential difference, and the negative electrode electrolyte flows from the negative high-level electrolyte liquid storage tank 7 to the negative electrode low position by relying on the potential difference Electrolyte liquid storage tank 6. This process does not consume pump power.
在此结构中，充电过程和放电过程时，通过压力平衡管一31使正极高位电解液储液罐5和正极低位电解液储液罐4上下导通，通过压力平衡管二32使负极高位电解液储液罐7和负极低位电解液储液罐6上下导通，从而消除压力变化的影响。 In this structure, during the charging process and discharging process, the positive high-level electrolyte liquid storage tank 5 and the positive low-level electrolyte liquid storage tank 4 are connected up and down through the pressure balance tube 1 31, and the negative high-level electrolyte liquid tank 4 is connected through the pressure balance tube 2 32. The electrolyte liquid storage tank 7 and the negative electrode low-level electrolyte liquid storage tank 6 are connected up and down, thereby eliminating the influence of pressure changes.
本实用新型的液流电池装置将充电过程消耗的泵功转化为势能储存起来，用于放电过程，且放电过程电化学反应的电解液离子浓度基本不变，实现节能、输出电压稳定，而且还具有低成本和结构简单等优势，在大规模电力储能领域有着广阔的应用前景。 The liquid flow battery device of the utility model converts the pump work consumed in the charging process into potential energy and stores it for the discharging process, and the ion concentration of the electrolyte in the electrochemical reaction during the discharging process is basically unchanged, thereby realizing energy saving, stable output voltage, and It has the advantages of low cost and simple structure, and has broad application prospects in the field of large-scale electric energy storage.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104538662A (en) * | 2014-12-11 | 2015-04-22 | 中国华能集团清洁能源技术研究院有限公司 | Flow battery system |
| CN105042686A (en) * | 2015-06-07 | 2015-11-11 | 深圳市沃森空调技术有限公司 | Variable frequency air conditioner for generating electricity by saline water |
| CN105206857A (en) * | 2015-09-07 | 2015-12-30 | 上海久能能源科技发展有限公司 | Energy storage system with electrolyte storage chambers for redox flow battery |
| CN111033851A (en) * | 2017-09-14 | 2020-04-17 | 东洋工程株式会社 | Redox flow battery |
| CN111919322A (en) * | 2018-03-01 | 2020-11-10 | 雷德能源(爱尔兰)有限公司 | Means for maintaining desired liquid level between interconnecting tanks |
| CN116130705A (en) * | 2023-01-31 | 2023-05-16 | 安徽海螺融华储能科技有限公司 | Gravitational potential energy and heat energy integrated recovery device of all-vanadium redox flow battery |
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2014
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104538662A (en) * | 2014-12-11 | 2015-04-22 | 中国华能集团清洁能源技术研究院有限公司 | Flow battery system |
| CN104538662B (en) * | 2014-12-11 | 2017-05-31 | 中国华能集团清洁能源技术研究院有限公司 | A flow battery system |
| CN105042686A (en) * | 2015-06-07 | 2015-11-11 | 深圳市沃森空调技术有限公司 | Variable frequency air conditioner for generating electricity by saline water |
| CN105206857A (en) * | 2015-09-07 | 2015-12-30 | 上海久能能源科技发展有限公司 | Energy storage system with electrolyte storage chambers for redox flow battery |
| CN111033851A (en) * | 2017-09-14 | 2020-04-17 | 东洋工程株式会社 | Redox flow battery |
| CN111919322A (en) * | 2018-03-01 | 2020-11-10 | 雷德能源(爱尔兰)有限公司 | Means for maintaining desired liquid level between interconnecting tanks |
| CN116130705A (en) * | 2023-01-31 | 2023-05-16 | 安徽海螺融华储能科技有限公司 | Gravitational potential energy and heat energy integrated recovery device of all-vanadium redox flow battery |
| CN116130705B (en) * | 2023-01-31 | 2023-07-28 | 安徽海螺融华储能科技有限公司 | Gravitational potential energy and heat energy integrated recovery device of all-vanadium redox flow battery |
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