CN116345664A - 一种基于全钒液流储能电池的用于ups的系统 - Google Patents
一种基于全钒液流储能电池的用于ups的系统 Download PDFInfo
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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
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/062—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for AC powered loads
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/18—Regenerative fuel cells, e.g. redox flow batteries or secondary fuel cells
- H01M8/184—Regeneration by electrochemical means
- H01M8/188—Regeneration by electrochemical means by recharging of redox couples containing fluids; Redox flow type batteries
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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
- H02J7/0063—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with circuits adapted for supplying loads from the battery
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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
- H02J7/0068—Battery or charger load switching, e.g. concurrent charging and load supply
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- 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
- H02J7/007—Regulation of charging or discharging current or voltage
- H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
- H02J7/007182—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery voltage
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- 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
- H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
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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
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
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- 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
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
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Abstract
本发明公开一种基于全钒液流储能电池的用于UPS的系统，包括全钒液流电池和转换开关，所述转换开关连接在市电和负载之间，所述全钒液流电池和转换开关之间还连接有逆变器，且全钒液流电池与市电之间还连接有EMS系统，当发生限电或外部断电时，能瞬时切换到全钒液流电池对负载进行供电，达到不间断电源的工作状态。电池系统经在线监测设备对电压进行及时调校，保障在需要用到全钒液流电池进行供电时能提供稳定电源。
Description
技术领域
本发明涉及移动通信领域，具体涉及一种基于全钒液流储能电池的用于UPS的系统。
背景技术
所以为了确保生产的正常进行，不受电网波动干扰，一般都会设置备用电源或储能电站，实现UPS供电，但是全钒液流电池作为UPS设备依旧有供电不稳定的缺陷
液流电池作为UPS时，由于长期不工作状态下，因内部存在暗电流导致的亏电现象，使得储存在电解液中的电量不断流失，导致启动时因为电压不足无法正常工作。
发明内容
本发明的目的在于提供一种基于全钒液流储能电池的用于UPS的系统，当发生限电或外部断电时，能瞬时切换到全钒液流电池对负载进行供电，达到不间断电源的工作状态。电池系统经在线监测设备对电压进行及时调校，保障在需要用到全钒液流电池进行供电时能提供稳定电源。
一种基于全钒液流储能电池的用于UPS的系统，包括全钒液流电池和转换开关，所述转换开关连接在市电和负载之间，所述全钒液流电池和转换开关之间还连接有逆变器，且全钒液流电池与市电之间还连接有EMS系统；
所述全钒液流电池包括正极电解液储存罐、负极电解液储存罐、正极输入管道、负极输入管道和工作电堆，所述正极电解液储存罐和负极电解液储存罐分别通过正极输入管道和负极输入管道与工作电堆连通，所述工作电堆通过输入输出回路与主回路连接。
优选的，所述工作电堆还分别通过正极回路和负极回路与正极电解液储存罐和负极电解液储存罐连通。
优选的，所述正极输入管道和负极输入管道上还分别设有正极泵和负极泵。
优选的，所述全钒液流电池上还设有电压电测电路，所述电压电测电路与EMS系统连接。
优选的，所述述转换开关连接与市电之间还连接有自动稳压电路。
本发明的优点在于：当发生限电或外部断电时，能瞬时切换到全钒液流电池对负载进行供电，达到不间断电源的工作状态。电池系统经在线监测设备对电压进行及时调校，保障在需要用到全钒液流电池进行供电时能提供稳定电源。
附图说明
图1为本发明的全钒液流电池的结构示意图；
图2为原UPS系统结构示意图；
图3为改进后的UPS系统结构示意图；
具体实施方式
为使本发明实现的技术手段、创作特征、达成目的与功效易于明白了解，下面结合具体实施方式，进一步阐述本发明。
如图1至图3所示，本发明包括全钒液流电池和转换开关，所述转换开关连接在市电和负载之间，所述全钒液流电池和转换开关之间还连接有逆变器，且全钒液流电池与市电之间还连接有EMS系统；
所述全钒液流电池包括正极电解液储存罐、负极电解液储存罐、正极输入管道、负极输入管道和工作电堆，所述正极电解液储存罐和负极电解液储存罐分别通过正极输入管道和负极输入管道与工作电堆连通，所述工作电堆通过输入输出回路与主回路连接。
其中，正极反应为：
负极反应为：
电池总反应为：
所述工作电堆还分别通过正极回路和负极回路与正极电解液储存罐和负极电解液储存罐连通。所述正极输入管道和负极输入管道上还分别设有正极泵和负极泵。
特别的，所述全钒液流电池上还设有电压电测电路，所述电压电测电路与EMS系统连接。所述述转换开关连接与市电之间还连接有自动稳压电路。
具体实施方式及原理：
放电反应过程：正负极电极液罐通过泵将正负极电解液导入工作电堆中进行氧化还原反应放出电流，反应后的电解液分别通过回路返回到各自电解液罐中完成一整个放电过程；
充电反应过程：正负极电极液罐通过泵将正负极电解液导入工作电堆中通过外部电流作用下进行氧化还原反应，反应后的电解液带电并通过回路进入各自电解液罐中完成一整个充电过程。
亏电现象：
全钒液流电池在不工作的情况下，如果长时间不对其进行充电，内部化学反应会逐渐停止，在停止之前，产生化学反应的过程中会出现“自放电”现象，这会逐渐消耗掉电池内的电量。一旦电压下降到电池启动电压以下，即使出现供电线路故障，全钒液流作为UPS也无法为系统进行供电。
UPS工作原理：
当市电正常时，由市电供电；当市电异常乃至停电时，由蓄电池向逆变器供电。因此从负载侧看，供电不受市电停电的影响。
改进后的基于全钒液流电池的UPS设计：
通过对全钒液流电池进行改造用于UPS,两种工作状态以及一种监测状态：
1.正常情况下，负载通过市电进行供电；
2.发生限电或断电情况下，转换开关切换到全钒液流电池进行供电；
电压监测装置定时对全钒液流电池电压进行监测取样，若存在电压低于电池工作电压，则反馈至EMS，由EMS控制外部市电对全钒液流电池进行充电并达到电池工作电压后停止对电池充电。
基于上述，本发明当发生限电或外部断电时，能瞬时切换到全钒液流电池对负载进行供电，达到不间断电源的工作状态。电池系统经在线监测设备对电压进行及时调校，保障在需要用到全钒液流电池进行供电时能提供稳定电源。
由技术常识可知，本发明可以通过其它的不脱离其精神实质或必要特征的实施方案来实现。因此，上述公开的实施方案，就各方面而言，都只是举例说明，并不是仅有的。所有在本发明范围内或在等同于本发明的范围内的改变均被本发明包含。
Claims (5)
1.一种基于全钒液流储能电池的用于UPS的系统，其特征在于，包括全钒液流电池和转换开关，所述转换开关连接在市电和负载之间，所述全钒液流电池和转换开关之间还连接有逆变器，且全钒液流电池与市电之间还连接有EMS系统；
所述全钒液流电池包括正极电解液储存罐、负极电解液储存罐、正极输入管道、负极输入管道和工作电堆，所述正极电解液储存罐和负极电解液储存罐分别通过正极输入管道和负极输入管道与工作电堆连通，所述工作电堆通过输入输出回路与主回路连接。
2.根据权利要求1所述的一种基于全钒液流储能电池的用于UPS的系统，其特征在于：所述工作电堆还分别通过正极回路和负极回路与正极电解液储存罐和负极电解液储存罐连通。
3.根据权利要求1所述的一种基于全钒液流储能电池的用于UPS的系统，其特征在于：所述正极输入管道和负极输入管道上还分别设有正极泵和负极泵。
4.根据权利要求1所述的一种基于全钒液流储能电池的用于UPS的系统，其特征在于：所述全钒液流电池上还设有电压电测电路，所述电压电测电路与EMS系统连接。
5.根据权利要求1所述的一种基于全钒液流储能电池的用于UPS的系统，其特征在于：所述述转换开关连接与市电之间还连接有自动稳压电路。
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