CN204376807U - 一种12v离网储能系统 - Google Patents
一种12v离网储能系统 Download PDFInfo
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- CN204376807U CN204376807U CN201520035504.7U CN201520035504U CN204376807U CN 204376807 U CN204376807 U CN 204376807U CN 201520035504 U CN201520035504 U CN 201520035504U CN 204376807 U CN204376807 U CN 204376807U
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- 238000004146 energy storage Methods 0.000 title claims abstract description 15
- 238000004891 communication Methods 0.000 claims abstract description 10
- 230000002457 bidirectional Effects 0.000 claims description 11
- 230000000875 corresponding Effects 0.000 claims description 9
- 230000005611 electricity Effects 0.000 description 3
- 239000000178 monomer Substances 0.000 description 3
- 238000010248 power generation Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound 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[C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N lithium Chemical compound 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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRA-RED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S10/00—PV power plants; Combinations of PV energy systems with other systems for the generation of electric power
-
- 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
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
- H02J7/0014—Circuits for equalisation of charge between batteries
-
- 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
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
- H02J7/0022—Management of charging with batteries permanently connected to charge circuit
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E70/00—Other energy conversion or management systems reducing GHG emissions
- Y02E70/30—Systems combining energy storage with energy generation of non-fossil origin
Abstract
本实用新型涉及太阳能储能系统，特别是涉及一种太阳能离网储能系统，主要包括光伏组件和蓄电池组，其中，光伏组件连接MPPT模块，MPPT模块连接MCU，MCU连接充电模块，充电模块连接蓄电池组；MCU还连接有通讯模块、预支付模块、唤醒模块、主动均衡模块、电池管理模块、放电模块；主动均衡模块连接蓄电池组，电池管理模块控制充电模块和放电模块，电池管理模块还通过电压采集模块连接蓄电池组。本实用新型采用高度模块化的方式集成，大大提高了系统的安全性和可靠性；通过增加预支付模块来完成预付费功能，降低了消费者首次产品的消费预期；通过主动均衡模块解决电池循环寿命。
Description
技术领域
[0001] 本实用新型涉及太阳能储能系统，特别是涉及一种太阳能离网储能系统。
背景技术
[0002] 随着传统能源如石油，煤炭等不能再生能源日益消耗及对环境的影响，全世界都把注意力放在发展可再生新能源，其中之一就是将太阳能转换为电能，尤其太阳能发电已经得到大力发展。太阳能作为一种清洁的可再生的新能源，越来越受到人们的青睐，在人们生活、工作中有广泛的作用。太阳能储能系统作为利用太阳能电池组件将光能转化为电能的装置，是地球的清洁能源和可再生能源。当前太阳能发电主要是大型电站和个人住宅太阳能发电，但是在缺电或者少电的国家或区域以离网太阳能储能系统为主，现有12V离网储能系统主要面临如下问题:
[0003] 1、在对各节电池单体进行能量均衡时，一般采用能量耗散型的被动式均衡，带来热量管理的问题，并且制约了均衡电流，使均衡电流只能在500mA以下进行；
[0004] 2、系统在停止充放电时静态功耗很大，直接消耗掉电池很多能量。
[0005] 3、系统首次支付成本较高。
实用新型内容
[0006] 针对背景技术中存在的技术问题，本实用新型目的是提供一种12V离网储能系统，其可对充电电路智能控制，提高充电效率。
[0007] 本实用新型的技术方案是这样实现的:
[0008] 一种12V离网储能系统，主要包括光伏组件和蓄电池组，所述光伏组件与蓄电池组之间设置有控制系统，所述控制系统包括MCU、MPPT模块、充电模块，唤醒模块，电池管理模块、通讯模块、主动均衡模块、放电模块、预付费模块、电压采集模块，其中，所述光伏组件连接MPPT模块，所述MPPT模块连接MCU，所述MCU连接充电模块，所述充电模块连接蓄电池组；所述MCU还连接有通讯模块、预支付模块、唤醒模块、主动均衡模块、电池管理模块、放电模块；所述主动均衡模块连接蓄电池组，所述电池管理模块控制充电模块和放电模块，所述电池管理模块还通过电压采集模块连接蓄电池组。
[0009] 作为优选地，所述蓄电池组由多个电池单体组成，每个电池单体的正负极分别连接有一开关单元，电池单体BI〜B4正极对应的开关单元依次为S1、S2、S3、S4，电池单体B4〜BI负极对应的开关单元依次为S5、S4、S3、S2 ;所述蓄电池组一侧连接电压采集模块，另一侧连接双向直流转换电路，开关单元S1、S2、S3、S4相互并联之后与相互并联的开关单元S6与S8串联至双向直流转换电路，开关单元S2、S3、S4、S5相互并联之后与相互并联的开关单元S7与S9串联至双向直流转换电路。
[0010] 作为优选地，上述负载包括通过充电接口连接的负载，通过USB5V输出连接的负载，通过12VDC输出连接的负载，通过20VDC输出连接的负载。
[0011] 本实用新型与现有技术相比，具有以下优点:
[0012] 1.通过主动均衡模块解决电池循环寿命，通过采集各个电池单体的电压，将电池电压高电池单体能量释放给电池电压低的单体，确保系统的各个电压在同一个层级上。
[0013] 2.系统增加预支付模块功能来完成预付费功能，降低了消费者首次产品的消费预期。
[0014] 3.系统集成了 MPPT，适配器，充电模块，放电模块，均衡模块，通讯模块，唤醒模块，预付费模块，及电池管理模块，采用高度模块化的方式集成大大提高了系统的安全性和可靠性。
附图说明
[0015] 图1本实用新型的原理图；
[0016] 图2为本实用新型主动均衡的电路原理图；
[0017] 图3主动均衡流程图。
具体实施方式
[0018] 下面将结合本实用新型实施例中的附图，对本实用新型实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅是本实用新型一部分实施例，而不是全部的实施例。基于本实用新型中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本实用新型保护的范围。
[0019] 如附图1至图3所示，本实用新型所述的一种12V离网储能系统，可应用于市电缺乏或者少电的国家及区域，其主要包括光伏组件和蓄电池组，所述光伏组件与蓄电池组之间设置有控制系统。
[0020] 所述蓄电池组有多个电池单体BI〜Bn组成，η为电池单体数量，在本实施例中以四节电池单体组成的蓄电池组为例。每个电池单体的正负极分别连接有一开关单元，电池单体BI〜Β4正极对应的开关单元依次为S1、S2、S3、S4，电池单体Β4〜BI负极对应的开关单元依次为S5、S4、S3、S2 ;所述蓄电池组一侧连接电压采集模块，另一侧连接双向直流转换电路，开关单元S1、S2、S3、S4相互并联之后与相互并联的开关单元S6与S8串联至双向直流转换电路，开关单元S2、S3、S4、S5相互并联之后与相互并联的开关单元S7与S9串联至双向直流转换电路。
[0021] 所述控制系统包括MCU(微控制单元)、MPPT模块、充电模块，唤醒模块，电池管理模块、通讯模块、主动均衡模块、放电模块、预付费模块、电压采集模块。
[0022] 所述光伏组件连接MPPT模块，所述MPPT模块连接MCU，所述MCU连接充电模块，所述充电模块连接蓄电池组；所述MCU还连接有通讯模块、预支付模块、唤醒模块、主动均衡模块、电池管理模块、放电模块；所述主动均衡模块连接蓄电池组，所述电池管理模块控制充电模块和放电模块，所述电池管理模块还通过电压采集模块连接蓄电池组。其中，所述MPPT模块用以计算最大跟踪效率；所述通讯模块用以与上位机进行通讯；系统停机时，所述唤醒模块启动使系统根据相应条件选择是否工作，如充电电流大于一定阈值时，唤醒模块使系统自动开启。
[0023] 上述负载包括通过充电接口连接的负载，通过USB5V输出连接的负载，通过12VDC输出连接的负载，通过20VDC输出连接的负载。
[0024] 该系统的充电模式:太阳光照射到光伏组件上时，光伏组件将光能转化成电能输入到MPPT模块上，MPPT模块计算最大跟踪效率，并通过充电模块给蓄电池组充电，当蓄电池组达到其保护电压时，电池管理模块控制管理充电模块使其停止对蓄电池组充电。
[0025] 该系统的放电模式:当负载接入时系统启动放电模块，对接入的不同负载进行相应的放电措施，当放电至电池单体电压达到欠压保护点时，电池管理模块就会控制放电模块停止对系统放电动作。
[0026] 该系统的主动均衡模式:通过电压采集模块获取串联的各个锂电池的电压，并将采集的电压信息传输给电池管理模块，4串中的电池电压如果最大的电压与最小的电压值压差小于设置的阈值，由MCU发出的控制信号不开启均衡功能。反之，由MCU发出的控制信号开启双向直流转换电路吸合电压值最大的电池单体对应的开关，对总线(该总线为双向直流电路与各个电池之间的线缆)进行放电，同时吸合电压值最低的电池单体对应的开关，电池单体接收来自总线上的电流，当最高和最低的电压值低于设置的阈值时，控制信号断开关闭各个支路上的开关，停止电池单体间的充放电动作。
[0027] 通过预支付模块，系统实现了预付费功能，产品针对消费者实行的是分期支付功能，产品根据用户支付的金额通过数据中心软件设置用户的使用状态，只有支付状态正常时用户才可以继续使用该产品，如果用户存在欠费，产品会自动给用户手机发送消息，通知用户系统目前处于金额不足状态，如果不续费将无法保证后续对产品的使用。
[0028] 以上所述仅为本实用新型的较佳实施例而已，并不用以限制本实用新型，凡在本实用新型的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本实用新型的保护范围之内。
Claims (3)
1.一种12V离网储能系统，其特征在于:主要包括光伏组件和蓄电池组，所述光伏组件与蓄电池组之间设置有控制系统，所述控制系统包括MCU、MPPT模块、充电模块，唤醒模块，电池管理模块、通讯模块、主动均衡模块、放电模块、预付费模块、电压采集模块，其中，所述光伏组件连接MPPT模块，所述MPPT模块连接MCU，所述MCU连接充电模块，所述充电模块连接蓄电池组；所述MCU还连接有通讯模块、预支付模块、唤醒模块、主动均衡模块、电池管理模块、放电模块；所述主动均衡模块连接蓄电池组，所述电池管理模块控制充电模块和放电模块，所述电池管理模块还通过电压采集模块连接蓄电池组。
2.根据权利要求1所述的一种12V离网储能系统，其特征在于:所述蓄电池组由多个电池单体组成，每个电池单体的正负极分别连接有一开关单元，电池单体BI〜B4正极对应的开关单元依次为S1、S2、S3、S4，电池单体B4〜BI负极对应的开关单元依次为S5、S4、S3、S2;所述蓄电池组一侧连接电压采集模块，另一侧连接双向直流转换电路，开关单元S1、S2、S3、S4相互并联之后与相互并联的开关单元S6与S8串联至双向直流转换电路，开关单元S2、S3、S4、S5相互并联之后与相互并联的开关单元S7与S9串联至双向直流转换电路。
3.根据权利要求1所述的一种12V离网储能系统，其特征在于:所述放电模块连接负载，所述负载包括通过充电接口连接的负载，通过USB5V输出连接的负载，通过12VDC输出连接的负载，通过20VDC输出连接的负载。
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| CN107196385A (zh) * | 2017-07-26 | 2017-09-22 | 北京创昱科技有限公司 | 光伏储能系统的蓄电池均衡方法与装置及该光伏储能系统 |
| CN108879855A (zh) * | 2018-07-14 | 2018-11-23 | 芜湖益浩昌智能设备有限公司 | 一种新能源发电的储能装置 |
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