CN107658524A - 一种基于赛贝尔效应的电池包均温系统 - Google Patents
一种基于赛贝尔效应的电池包均温系统 Download PDFInfo
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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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
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- H01M10/613—Cooling or keeping cold
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- H—ELECTRICITY
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- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/617—Types of temperature control for achieving uniformity or desired distribution of temperature
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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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
- H01M10/625—Vehicles
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Abstract
本发明提供一种基于赛贝尔效应的电池包均温系统,包括电池包、检测和控制电池包的BMS、温差发电模块以及控制模块;所述BMS连接于电池包和温差发电模块之间,用于检测电池包的温差并发送命令以控制温差发电模块开启或关闭;所述控制模块连接于温差发电模块和电池包之间;所述BMS检测到电池包内的温差大于或等于预设值时,则发送命令使温差发电模块开启,将电池包内的温差转化为电能,从而使控制模块工作。本发明提供的基于赛贝尔效应的电池包均温系统,将电池包内的温差转化为电能,提升了电池包的均温效果,同时可回收一部分能量,有利于提升电动汽车的续航里程。
Description
【技术领域】
本发明涉及电池技术领域,尤其涉及一种基于赛贝尔效应的电池包均温系统。
【背景技术】
目前随着实现快充的动力电池包的需求量逐渐增加,电池的高倍率充放电导致电池产热情况愈发严峻,对于高效散热结构的研究显得尤为重要。常用的散热结构为风冷和液冷两种,风冷结构的均温效果好但散热效果不佳。目前的液冷结构的电池包虽然散热效果好,但是存在严重的温度不均现象,靠近热管或液冷板的电芯温度较低,而距离较远的电芯温度较高,这样会使电芯的一致性降低,继而影响电芯的使用寿命。
鉴于此,实有必要提供一种基于赛贝尔效应的电池包均温系统以克服上述缺陷。
【发明内容】
本发明的目的是提供一种基于赛贝尔效应的电池包均温系统,将电池包内的温差转化为电能,以提升液冷电池包的均温效果。
为了实现上述目的,本发明提供一种基于赛贝尔效应的电池包均温系统,包括电池包、检测和控制电池包的BMS(battery management system,电池管理系统)、温差发电模块以及控制模块;所述BMS连接于电池包和温差发电模块之间,用于检测电池包的温差并发送命令以控制温差发电模块开启或关闭;所述控制模块连接于温差发电模块和电池包之间;所述BMS检测到电池包内的温差大于或等于预设值时,则发送命令使温差发电模块开启,将电池包内的温差转化为电能,从而使控制模块工作。
在一个优选实施方式中,所述控制模块包括依次相连的升压电路、保护电路、充电电路。
在一个优选实施方式中,所述升压电路将温差发电模块产生的第一直流电压转化为大于第一直流电压的第二直流电压,所述保护电路具有欠压、限流的保护功能,所述充电电路用于回收温差发电模块产生的电量。
在一个优选实施方式中,所述BMS检测到电池包内的温差小于预设值时,温差发电模块处于关闭状态。
本发明提供的基于赛贝尔效应的电池包均温系统,将电池包内的温差转化为电能,提升了电池包的均温效果,同时可回收一部分能量,有利于提升电动汽车的续航里程。
【附图说明】
图1为本发明提供的基于赛贝尔效应的电池包均温系统的结构示意图。
图2为本发明提供的基于赛贝尔效应的电池包均温系统的工作原理图。
【具体实施方式】
为了使本发明的目的、技术方案和有益技术效果更加清晰明白,以下结合附图和具体实施方式,对本发明进行进一步详细说明。应当理解的是,本说明书中描述的具体实施方式仅仅是为了解释本发明,并不是为了限定本发明。
请参阅图1,本发明提供一种基于赛贝尔效应的电池包均温系统100,包括电池包10、检测和控制电池包10的BMS20、温差发电模块30以及控制模块40。所述BMS20连接于电池包10和温差发电模块30之间,其用于检测电池包10的温差并发送命令以控制温差发电模块30开启或关闭。本实施方式中,BMS20检测到电池包10内的温差大于或等于预设值时,则发送命令使温差发电模块30开启。
所述温差发电模块30根据塞贝克效应制成,当金属中温度不均匀时,温度高处的自由电子比温度低处的自由电子动能大,自由电子从温度高处向温度低处扩散,在低温处堆积,从而在导体内形成电场,在金属棒两端便引成一个电势差,这种作用一直到热扩散平衡为止。本实施方式中,可在电池包10的电池模块与液冷板接触的温度低处以及与导热带接触的温度高处涂上导热硅脂,确保温度低处能把温度高处传递的热量及时带走,以维持发电组件两面的温差,提高发电效果,同时利于提升电池包整体的均温效果。
所述控制模块40连接于温差发电模块30和电池包10之间,所述控制模块40包括依次相连的升压电路41、保护电路42、充电电路43。所述升压电路41用于将温差发电模块30产生的的第一直流电压转化为大于第一直流电压的第二直流电压。所述保护电路42具有欠压、限流的保护功能,以保证温差发电模块30稳定工作,进而保证产生电压的稳定性。所述充电电路43用于回收温差发电模块30产生的电量,利于增加电动汽车的续航里程。
请参阅图2,本发明的工作原理如下:
BMS20检测电池包10的温度,电池包10内的温差大于或等于预设值时,则发送命令使温差发电模块30开启,将电池包10内的温差转化为电能,从而使控制模块40工作,当BMS20检测到电池包10的温差在预设值以下时,BMS20发送命令使温差发电模块30关闭,控制模块40停止工作;BMS20检测电池包10的温度,电池包10内的温差小于预设值时,温差发电模块30处于关闭状态,以避免不必要的工作,以延长使用寿命。
本发明提供的基于赛贝尔效应的电池包均温系统100,将电池包内的温差转化为电能,提升了液冷电池包的均温效果,同时可回收一部分能量,有利于提升电动汽车的续航里程。
本发明并不仅仅限于说明书和实施方式中所描述,因此对于熟悉领域的人员而言可容易地实现另外的优点和修改,故在不背离权利要求及等同范围所限定的一般概念的精神和范围的情况下,本发明并不限于特定的细节、代表性的设备和这里示出与描述的图示示例。
Claims (4)
1.一种基于赛贝尔效应的电池包均温系统,包括电池包、检测和控制电池包的BMS、温差发电模块以及控制模块;所述BMS连接于电池包和温差发电模块之间,用于检测电池包的温差并发送命令以控制温差发电模块开启或关闭;所述控制模块连接于温差发电模块和电池包之间;所述BMS检测到电池包内的温差大于或等于预设值时,则发送命令使温差发电模块开启,将电池包内的温差转化为电能,从而使控制模块工作。
2.根据权利要求1所述的基于赛贝尔效应的电池包均温系统,其特征在于:所述控制模块包括依次相连的升压电路、保护电路、充电电路。
3.根据权利要求2所述的基于赛贝尔效应的电池包均温系统,其特征在于:所述升压电路将温差发电模块产生的第一直流电压转化为大于第一直流电压的第二直流电压,所述保护电路具有欠压、限流的保护功能,所述充电电路用于回收温差发电模块产生的电量。
4.根据权利要求1所述的基于赛贝尔效应的电池包均温系统,其特征在于:所述BMS检测到电池包内的温差小于预设值时,温差发电模块处于关闭状态。
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Cited By (2)
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CN108493506A (zh) * | 2018-05-07 | 2018-09-04 | 福州鼎烯飞扬科技有限公司 | 一种新型电池包结构 |
CN112436680A (zh) * | 2020-12-09 | 2021-03-02 | 上研动力科技江苏有限公司 | 一种带有均温系统的发电机组 |
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CN108493506A (zh) * | 2018-05-07 | 2018-09-04 | 福州鼎烯飞扬科技有限公司 | 一种新型电池包结构 |
CN112436680A (zh) * | 2020-12-09 | 2021-03-02 | 上研动力科技江苏有限公司 | 一种带有均温系统的发电机组 |
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