CN205790155U - 电池包及电动车动力*** - Google Patents

电池包及电动车动力*** Download PDF

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Publication number
CN205790155U
CN205790155U CN201620198509.6U CN201620198509U CN205790155U CN 205790155 U CN205790155 U CN 205790155U CN 201620198509 U CN201620198509 U CN 201620198509U CN 205790155 U CN205790155 U CN 205790155U
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battery module
battery
circuit
present
switch
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Expired - Fee Related
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CN201620198509.6U
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连柏翰
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Ganzhou Chang Wei New Energy Automobile Co. Ltd.
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Thunder Power New Energy Vehicle Development Co Ltd
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Priority to CN201621339917.5U priority Critical patent/CN206606064U/zh
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60LPROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L3/00Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
    • B60L3/0023Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
    • B60L3/0046Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to electric energy storage systems, e.g. batteries or capacitors
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50Current conducting connections for cells or batteries
    • H01M50/528Fixed electrical connections, i.e. not intended for disconnection
    • BPERFORMING OPERATIONS; TRANSPORTING
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    • B60LPROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L3/00Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
    • B60L3/12Recording operating variables ; Monitoring of operating variables
    • BPERFORMING OPERATIONS; TRANSPORTING
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    • B60L50/00Electric propulsion with power supplied within the vehicle
    • B60L50/50Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
    • B60L50/60Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
    • B60L50/64Constructional details of batteries specially adapted for electric vehicles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
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    • B60L58/19Switching between serial connection and parallel connection of battery modules
    • BPERFORMING OPERATIONS; TRANSPORTING
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    • B60L58/21Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules having the same nominal voltage
    • BPERFORMING OPERATIONS; TRANSPORTING
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    • BPERFORMING OPERATIONS; TRANSPORTING
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    • B60L58/25Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries by controlling the electric load
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  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

电池包及电动车动力***。所述电池包包括多个串联连接的电池模块,其中每个电池模块都具有连接电路。在电池模块正常工作时,连接电路将当前电池模块串联连接到前置电池模块和后续电池模块。在电池模块异常工作时,连接电路选择性地断开当前电池模块,并且如果连接电路断开当前电池模块,则其将前置电池模块和后续电池模块直接串联连接。在电池模块受到损坏或异常时,可以从串联电池包断开并绕过当前损坏的电池模块。这样,前置电池模块将与后续电池模块直接连接,从而确保串联电路的正常接通。

Description

电池包及电动车动力***
相关申请的交叉引用
本申请要求2015年3月16日提交的申请号为62/133,991和2015年4月22日提交的申请号为62/150,848的美国临时专利申请的优先权,所述美国临时专利申请所披露的全部内容以引用的方式并入本文以用于达到本说明书所有目的、用途或要求。
技术领域
本实用新型的示例性实施例涉及电动车的电池包,并且更具体来说涉及电动车的能够自动绕过或旁路故障电池模块的电池包。
背景技术
环保节能的新型电动车属于未来汽车发展的新兴领域,并且未来将会得到极大的发展,市场前景广阔。电池充电和放电技术是电动车发展的一个关键。
通常,电动车的电池包是通过将多个电池(例如电池模块)串联来形成。例如,电动车可以具有总共10个电池模块,每个电池模块提供40V的电压输出。因此,串联的电池模块将提供400V的总电压输出。然而,在这种串联的电池模块结构中,当一个或多个电池模块出现故障时,串联电池的电路便无法接通。因此,整个电池包便无法正常工作。
实用新型内容
鉴于以上问题,本实用新型的各方面旨在提供一种能够自动绕过或旁路故障电池模块的电池包,所述电池包可以提供诸如提高电动车的安全性的优点。
根据本实用新型的第一方面,提供一种电池包。所述电池包可以包括多个串联连接的电池模块,其中每个电池模块都与连接电路相连接。在实施例中,在电池模块正常工作时,连接电路通过当前电池模块串联连接前置电池模块和后续电池模块。在实施例中,在当前电池模块异常工作时,连接电路可以可选择地断开或不断开当前电池模块。在实施例中,当断开当前电池模块时,其前置电池模块和后续电池模块被直接串联连接。电池包可以进一步包括多个驱动电路,所述驱动电路分别与连接电路相连接并且用于控制连接电路以断开当前电池模块。
在一些实施例中,电池包中的每个电池模块都具有连接电路。在实施例中,在当前电池模块异常时,控制电路可以将当前异常的电池模块从串联的电池包中断开。这样做,就绕过或旁路了当前电池模块,并且其前置电池模块和后续电池模块被直接连接在一起。
在一些实施例中,可以实现额外的绕过或旁路,例如:如果前置和/或后续电池模块进入异常状态。
根据本实用新型的又一方面,提供一种电动车动力***。所述电动车动力***包括电池包,所述电池包包括多个串联连接的电池模块;多个连接电路,所述连接电路中的每一个连接到相应的电池模块;多个驱动电路,所述多个驱动电路与所述连接电路相连接并且被配置成控制所述连接电路中的每一个以选择性地断开所述电池模块中的一个或多个;多个监控电路,所述多个监控电路分别与所述多个电池模块相连接并且被配置成监控所述多个电池模块的工作状态并传送监控信号;控制装置,所述控制装置被配置成接收所述监控信号、至少部分地基于所述监控信号来确定电池状态信息,并且至少部分地基于所述电池状态信息来将开关信号传送给所述驱动电路中的一个或多个;其中所述多个电池模块包括至少一个当前电池模块,所述当前电池模块在正常工作期间串联连接在第一电池模块与第二电池模块之间,并且所述开关信号使得所述当前电池模块从所述第一电池模块和所述第二电池模块断开,并且所述开关信号使得所述第一电池模块和所述第二电池模块直接串联连接。
本实用新型的实施例可以提供若干优点,诸如确保串联电路的正常接通、减少道路救援的几率、降低维修成本以及使得车辆的驾驶者有机会驶去最近的维修站进行检修。
本实用新型的额外特征、优点和实施例将通过以下详细描述、附图和权利要求来阐明或变得显而易见。此外,应理解,本实用新型的以上概述和以下详细描述是示例性的,并且旨在提供进一步解释而非限制本实用新型所请求保护的范围。然而,详细描述和具体实例仅指出本实用新型的优选实施例。通过此详细描述,在本实用新型的精神和范围内的各种改变和修改对于本领域技术人员将变得显而易见。
附图说明
附图被包括以提供对本实用新型的进一步理解,其被并入此说明书中并构成此说明书的一部分、说明本实用新型的实施例并且与详细描述一起用来解释本实用新型的原理。并未试图更详细地展示对于本实用新型的基本理解而言可能不必要的本实用新型的结构细节和可能实践本实用新型的各种方式。附图中:
图1是示出根据本实用新型的实施例的电池包的电路结构的示意图;
图2A是示出根据本实用新型的实施例的处于正常状态下的电池模块的连接电路的示意图;
图2B是示出根据本实用新型的实施例的处于异常状态下的电池模块的连接电路的示意图;
图3A是示出根据本实用新型的实施例的控制装置的内部结构的示意图;
图3B是示出根据本实用新型的实施例的驱动电路的结构的示意图;
图4是示出根据本实用新型的实施例的当电池包的某个电池模块故障时的连接电路的示意图;以及
图5是示出根据本实用新型的实施例的故障处理策略的流程示意图。
具体实施方式
以下将参考构成说明书的一部分的附图对本实用新型的各种示例性实施例进行描述。应该理解,虽然在本实用新型中使用表示方向的术语,诸如“前”、“后”、“上”、“下”、“左”、“右”等来描述本实用新型的各种示例性结构部分和元件,但是本文使用这些术语仅出于方便说明的目的,并且这些术语是基于附图中展示的示例性方位来确定。由于本实用新型所披露的实施例可以根据不同的方向来布置,所以这些表示方向的术语仅用于说明而不应视作为限制。在可能的情况下,本实用新型中使用的相同或者相类似的参考标记指代相同的部件。
除非另有定义,否则本文使用的所有技术术语具有与本实用新型所属领域的普通技术人员通常理解的意义相同的意义。本实用新型的实施例以及其各种特征和优点细节将参照在附图中描述和/或示出并在以下描述中详述的非限制性实施例和实例来更完整地解释。应注意,附图中所示出的特征不必按比例绘制,并且如本领域的技术人员可以认识到的,即使本文并未明确陈述,一个实施例中的特征也可以用于其他实施例。可以省略熟知部件和处理技术的描述以免不必要地模糊本实用新型的实施例。本文使用的实例仅旨在促进对可以实践本实用新型的方式的理解和进一步使得本领域技术人员能够实践本实用新型的实施例。因此,本文的实例和实施例不应解释为限制本实用新型的范围,本实用新型的范围仅由随附的权利要求和适用法律限定。此外,应注意,相似的参考数字在附图的几个视图中指代类似部分。
图1是示出根据本实用新型的实施例的电池包的电路结构的示意图。
如图1中所示,电池包100可以包括电池模块、连接电路、驱动电路、监控电路及控制装置等。具体来说,电池包100可以包括多个电池模块101.1、101.2、101.3、……、101.i、……、101.N。另外,电池模块101.1、101.2、101.3、……、101.i、……、101.N可以分别具有连接电路111.1、111.2、 111.3、……、111.i、……、111.N和监控电路141.1、141.2、141.3、……、141.i、……、141.N。连接电路111.1、111.2、111.3、……、111.i、……、111.N可以将电池模块串联连接以形成电池包100的供电电路。在一些实施例中,监控电路141.1、141.2、141.3、……、141.i、……、141.N可以分别监控电池模块的工作状态并将工作状态传送给控制装置130。
在一些实施例中,连接电路111.i、……、111.N分别由驱动电路121.1、121.2、121.3、……、121.i、……、121.N控制。例如,驱动电路121.1、121.2、121.3、……、121.i、……、121.N可以分别地控制连接电路111.1、111.2、111.3、……、111.i、……、111.N的接通和断开,以使得对应电池模块101.i可以接入到串联电路中或者从串联电路中断开。驱动电路121.1、121.2、121.3、……、121.i、……、121.N可以由控制装置130控制。在一些实施例中,控制装置130根据监控电路141.1、141.2、141.3、……、141.i、……、141.N对电池模块101.1、101.2、101.3、……、101.i、……、101.N的监控信号,来判断或分析电池模块101.1、101.2、101.3、……、101.i、……、101.N是否在异常状态或故障下工作。如果某个电池模块101.i(例如,电池模块101.2)在异常状态下工作(如图4中所示),则控制装置130根据异常的具体情况来选择性地断开或者不断开该异常的电池模块101.2。
在一些实施例中,如果控制装置130选择断开在异常状态下工作的某个电池模块(如电池模块101.2),则其将断开信号发送给对应的驱动电路(如驱动电路121.2)。因此,驱动电路121.2被启动并且连接电路111.2中的连接开关被关断,从而使串联电路绕过或旁路故障电池模块101.2并且直接将和电池模块101.2相邻的正常的前置电池模块101.1与正常的后续电池模块101.3串联连接。连接电路111.2的示例性结构如图2A、图2B所示。
图2A是示出根据本实用新型的实施例在正常状态下工作的电池模块的连接电路的示意图。因为所有池模块的连接电路相同,以图1中的电池模块101.2为例来描述所有连接电路的细节,如图2A中所示,与电池模块101.2相连的连接电路111.2包括正极端子208.2和负极端子209.2。在一些实施例中, 连接电路111.2包括第一开关201.2、第二开关202.2和过桥203.2。过桥203.2可以在靠近第一开关201.2的一侧具有第一端点204.2,并且在靠近第二开关202.2的一侧具有第二端点206.2。在一些实施例中,第一开关201.2和第二开关202.2可以是单刀双掷开关,并且可以分别具有第一动端205.2和第二动端207.2。
第一动端205.2的一端被固定以形成固定端点,并且第一动端205.2的另一端为活动端点,该活动端点可以选择性地连接到电池模块101.2的正极端子208.2或者过桥203.2的第一端点204.2。类似地,第二动端207.2的一端被固定以形成固定端点,并且第二动端207.2的另一端为活动端点,该活动端点可以选择性地连接到电池模块101.2的负极端子209.2或者过桥203.2的第二端点206.2。电池模块101.2的第一动端205.2的固定端点与前置电池模块101.1的第二动端的固定端点相连接。此外,电池模块101.2的第二动端207.2的固定端点与后续电池模块101.3的第一动端的固定端点相连接(如图4中所示)。应注意,本文描述的端子可转换其功能,即在作为阳极或阴极的功能之间转换,这种功能的转换取决于视电池是在充电还是在放电。
如图2A所示,当电池模块101.2在正常状态下工作时,第一开关201.2的第一动端205.2的活动端点连接到电池模块101.2的正极端子208.2。另外,在正常工作期间,第二开关202.2的第二动端207.2的活动端点连接到电池模块101.2的负极端子209.2。因此,在此情况下,当前置电池模块101.1和后续电池模块101.3均正常地工作时(例如,无故障),连接电路111.2将电池模块101.2的正极端子208.2与前置电池模块101.1的负极端子209.1相连接(参见图4)。此外,在此情况下,电池模块101.2的负极端子209.2与后续电池模块101.3的正极端子208.3相连接(参见图4)。因此,当前电池模块101.2被接入到电池包100的串联电路中。
图2B是示出根据本实用新型的实施例的在异常状态下工作的电池模块的连接电路的示意图。同样以电池模块101.2为例,如图2B中所示,当电池模块101.2在异常状态下时(例如,电池模块101.2中存在故障),其监控电路 141.2将状态信号传送给控制装置130(参见图1)。当控制装置130判断或分析需要断开电池模块101.2时,控制装置130将断开信号传送给对应的驱动电路121.2。进一步地,在接收到断开信号之后,驱动电路121.2开始工作以驱动第一开关201.2,从而使得其第一动端205.2的活动端点与过桥203.2的第一端点204.2相连接。此外,在接收到断开信号之后,驱动电路121.2开始工作以驱动第二开关202.2,从而使得其第二动端207.2的活动端点与过桥203.2的第二端点206.2相连接。
在在电池模块101.2出现异常状态情况下,当前置电池模块101.1和后续电池模块101.3均在正常状态下工作时,连接电路111.2将当前电池模块101.2的正极端子208.2与前置电池模块101.1的负极端子209.1断开。此外,连接电路111.2将当前电池模块101.2的负极端子209.2与后续电池模块101.3的正极端子208.3断开。因此,连接电路111.2将前置电池模块101.1的负极端子209.1与当前电池模块101.2的连接电路111.2中的过桥203.2的第一端点204.2相连接。另外,连接电路111.2将后续电池模块101.3的正极端子208.3与过桥203.2的第二端点206.2相连接,从而使得前置电池模块101.1与后续电池模块101.3通过过桥203.2直接接入到电池包100的串联电路中。根据本实用新型的以上方面,电池包100可以绕过(旁路)异常的当前电池模块101.2,并且使得电池包100可以继续工作。
应当了解,图2A、2B中的实施例仅是以电池模块101.2为例描述电池模块的连接电路。在一些实施例中,任何一个电池模块101.i的连接电路的结构和工作原理可以与电池模块101.2的连接电路的结构和工作原理相同或类似。此外,在一些实例中,可以通过断开正极端子或负极端子中的一个来实现绕过(旁路)。
图3A是示出根据本实用新型实施例的控制装置130的内部结构的示意图。在一些实施例中,控制装置130具有电池监控单元310、处理器(CPU)320、输入/输出(I/O)端口330等。连接到监控电路141.1、141.2、141.3、……、141.i、……、141.N和处理器(CPU)320的电池监控单元310 接收监控电路141.1、141.2、141.3、……、141.i、……、141.N的监控信号并将监控信号发送给处理器(CPU)320以进行处理。处理器(CPU)320还连接到输入/输出端口330,并且通过输入/输出端口330将控制信号发送给驱动电路121.1、121.2、121.3、……、121.i、……、121.N。
具体来说,电池监控单元310通过与电池模块101.1、101.2、101.3、……、101.i、……、101.N相连接的监控电路141.1、141.2、141.3、……、141.i、……、141.N来监控所有电池模块101.1、101.2、101.3、……、101.i、……、101.N的状态,并将监控到的异常状态信号发送给处理器320。在一些实施例中,当处理器320根据监控到的异常状态信号判定需要断开在异常状态下工作的某个电池模块101.i时,处理器320通过输入/输出端口330将断开信号传送给异常的电池模块101.i所对应的驱动电路121.i。另外,驱动电路121.i可以通过经由连接电路111.i中的过桥203.i直接接通串联电路来断开该异常的电池模块101.i。作为一个实例,本实用新型的处理器(CPU)320为AT89S51微控制器,然而,本实用新型并不限于此。
图3B是示出根据本实用新型的实施例的驱动电路的结构的示意图。
如图3B中所示,例如,驱动电路121.i包括辅助电源331.i、三极管332.i(实施例之一可以是NPN型)、继电器339.i等。在一些实施例中,继电器339.i具有线圈337.i和铁芯338.i。三极管332.i具有集电极334.i、基极335.i和发射极336.i。线圈337.i的一端与辅助电源331.i相连接,并且线圈337.i的另一端与三极管332.i的集电极334.i相连接。三极管332.i的基极335.i连接到上述输入/输出端口330的输出,并且三极管332.i的发射极336.i接地。
如以上所提及,当电池包100的串联电路在正常状态下工作时,每个连接电路111.i的第一开关201.i的第一动端205.i的活动端都连接到电池模块101.i的正极端子208.i。类似地,第二开关202.i的第二动端207.i的活动端连接到电池模块101.i的负极端子209.i。因此,该电池模块101.i可以相应地接入到电池包100的串联电路中。
然而,当电池监控单元310检测到某个电池模块101.i在异常状态下工作并且处理器320判定不能再将该异常工作的电池模块101.i接入到串联电路中时,处理器320通过输入/输出端口330将控制信号(实施例之一可以是低电流)传送给驱动电路121.i中的三极管332.i的基极335.i。当三极管332.i的集电极334.i与发射极336.i相连接时,在辅助电源331.i与地面之间形成高电流导通。此时,当高电流流经线圈337.i时,铁芯338.i会产生磁力,从而将第一动端205.i和第二动端207.i的活动端点分别从电池模块102.i的正极端子208.i与负极端子209.i吸开(或以其他方式推开)。随后,第一动端205.i和第二动端207.i的活动端点分别与过桥203.1的第一端点204.i和第二端点206.i相连接。因此,电池模块101.i被从串联电路中绕开(旁路)。
图4是示出根据本实用新型的实施例的当电池包的某个电池模块故障时的连接电路的示意图。虽然任何电池模块都可能在异常状态下工作,但是作为非限制性实例,以电池模块101.2在异常状态下工作的情况来对进行图4的描述。在一些实施例中,当电池监控单元310检测到电池模块101.2在异常状态下工作时,处理器320基于从电池模块101.2接收到的指示异常状态的信号来判定是否需要将电池模块101.2断开。当处理器320判定需要将电池模块101.2断开时,处理器320将断开信号传送给驱动电路121.2,从而使得串联电路可以通过连接电路111.2绕开(旁路)电池模块101.2。绕开(旁路)电池模块101.2需要使用过桥203.2将处于正常状态下的前置电池模块101.1的负极端子209.1连接到处于正常状态下的后续电池模块101.3的正极端子208.3,以接通电池包100的串联电路。
类似地,当前置电池模块101.1、后续电池模块101.3或任何其他电池模块101.i在异常状态下工作时,可以采用上述方法通过对应的连接电路111.i将异常的电池模块101.i绕开。因此,可以通过对应的过桥203.i将与异常的电池模块101.i相邻的正常的电池模块101.h和101.k彼此相连接。
在一些实施例中,当电池包100中的第一个电池模块101.1和最后一个电池模块101.N出现故障时,对应于第一个电池模块101.1的连接电路111.1将 电池包100的正极端子与第二个电池模块101.2的正极端子直接相连接。类似地,第N个(也即最后一个)电池模块101.N的连接电路111.N将电池包100的负极端子与第(N-1)个电池模块101.(N-1)的负极端子直接相连接。
以上描述是根据本实用新型的实例的用于断开电池包中在异常状态下工作的电池模块的示例性方法。另外,以上还描述了用于实施根据本实用新型的实施例的方法的示例性结构。电池模块是否在异常状态下工作可以通过对电池模块的各种工作参数进行监控来确定。在一些实施例中,通过对电池模块的工作电压V和工作温度T进行监控来判定电池模块是否在异常状态下工作。此外,根据工作电压V和工作温度T的具体状态来判定是否需要断开在异常状态下工作的电池模块。
应注意,除了电池模块的工作电压V和工作温度T之外,还可以监控电池模块的其他工作参数来判定电池模块是否在异常状态下工作。类似地,可以监控其他工作参数以判定是否需要断开异常的电池模块,这些都落在本实用新型的保护范围内。
在一些实施例中,将电池模块的工作电压的下限设定为Vbot1,并将电池模块的工作温度的上限设定为Ttop1。如果工作电压V小于Vbot1和/或工作温度T大于Ttop1,则可以判定电池模块在异常状态下工作。另外,通过使用工作电压V和工作温度T来判定电池模块的具体异常情况,控制装置130可以判定是否断开在异常状态下工作的电池模块。此外,控制装置130还可以向车辆控制单元(VCU)发送不同的故障信号以告知车辆操作者电池故障的紧急程度,从而使得车辆操作者能够根据不同的故障信号采取对应的故障处理策略。
图5是示出采用了根据本实用新型的实施例的电池包并采用上述电池模块异常判断方法的电动车的故障处理策略的流程示意图。
在方框501,电池监控单元310监控电池模块的工作电压V和工作温度T(例如,V<Vbot1和/或T>Ttop1)以判定某个电池模块(例如,电池模块101.i)是否在异常状态下工作。
在方框502,当V<Vbot1和/或T>Ttop1时,电池监控单元310将指示电池模块在异常状态下工作的信号发送给处理器320,从而处理器320能够对该信号进行分析和判断。
在方框503,处理器320基于接收到的信号对电池模块的工作电压V的状态和电池模块的工作温度T的状态进行分析。在对电池模块的工作电压V进行分析时,将电池模块的电压的安全下限设定为Vbot2。这样,如果Vbot1>V>Vbot2,则判定电池模块处于状态A下,并且如果V<Vbot2,则判定电池模块处于状态B下。
在对电池模块的工作温度T进行分析时,将电池模块的温度的安全上限设定为Ttop2。因此,如果Ttop2>T>Ttop1,则判定电池模块处于状态C下,并且如果T>Ttop2,则判定电池模块处于状态D下。
在进行上述分析之后,处理器320判定电池模块的工作电压和工作温度的状态,以判定是否断开电池模块。另外,处理器320可以基于工作电压状态和工作温度状态来判定向车辆操作者传送哪种类型的故障信号。
在一些实施例中,如果电池模块处于状态A或C下,则在方框505.1,处理器320判定电池模块在异常状态下工作但不存在立即的危险。
在方框506.1,控制装置130判定不断开该异常工作的电池模块,而是维持异常电池模块的连通。
在方框507.1,控制装置130通知车辆控制***(VCU)发出信号以警告驾驶者尽早驶去维修站,以对故障电池模块进行维修。
在一些实施例中,如果电池模块处于状态B、B且C、A且C、A且D或D下,则在方框505.2,处理器320判定电池模块在异常状态下工作且存在潜在的危险。
在方框506.2,控制装置130判定断开该异常的电池模块。
在方框507.2,控制装置130通知车辆控制***(VCU)发出信号以警告驾驶者立刻驶去维修站,以对故障电池模块进行维修;
在一些实施例中,如果电池模块处于状态B且D下,则在方框505.3,处理器320判定电池模块在异常状态下工作且存在立即的危险。
在方框506.3,控制装置130判定断开该异常的电池模块。
在方框507.3,控制装置130通知车辆控制***(VCU)发出信号以警告驾驶者立刻离开车辆,以避免事故发生。
通过采用图5中所示的故障处理策略,采用根据本实用新型的实施例的电池包的电动车可以提供若干优点,诸如能够保障驾驶电动车的驾驶者的安全和延长电池的使用寿命。
尽管是参考附图中示出的具体实施例来对本实用新型进行描述的,但是应当理解,在不背离本实用新型的精神、范围和背景的情况下,本实用新型提供的电池包的电路结构可以具有多种变化。以上的描述仅是说明性的,而并不旨在详尽罗列本实用新型的所有可能实施例、应用或修改。本领域的技术人员还应意识到,可以用不同的方式来改变本实用新型所公开的实施例中的参数,并且这些改变均落入本实用新型和权利要求的精神和范围内。因此,在不背离本实用新型的范围和精神的情况下,本实用新型的所描述的方法和***的各种修改和变化对本领域技术人员将是显而易见的。

Claims (9)

1.一种电池包,包括:
多个串联连接的电池模块,其中:
每个电池模块均连接到连接电路;
在当前电池模块在正常状态下工作时,所述连接电路通过所述当前电池模块将第一电池模块和第二电池模块串联连接;
在所述当前电池模块在异常状态下工作时,所述连接电路选择性地断开所述当前电池模块,并且如果所述当前电池模块被断开,则所述连接电路将所述第一电池模块和所述第二电池模块直接串联连接;以及
所述电池包进一步包括多个驱动电路,所述驱动电路分别与所述连接电路相连接并且被配置成控制所述连接电路断开所述当前电池模块。
2.如权利要求1所述的电池包,其中:
每个电池模块包括一个或多个电池单元。
3.如权利要求1所述的电池包,其中每个电池模块都具有正极端子和负极端子,并且每个连接电路都包括:
第一开关;
第二开关;以及
过桥,所述过桥包括彼此电气地连接的第一端点和第二端点;
其中所述第一开关将所述第一电池模块的所述负极端子与所述当前电池模块的所述正极端子选择性地连接或断开,并且对应地将所述第一电池模块的所述负极端子与所述过桥的所述第一端点断开或连接;
所述第二开关将所述第二电池模块的所述正极端子与所述当前电池模块的 所述负极端子选择性地连接或断开,并且对应地将所述第二电池模块的所述正极端子与所述过桥的所述第二端点断开或连接。
4.如权利要求3所述的电池包,其进一步包括:
控制装置,所述控制装置包括处理器,所述处理器用于传送控制信号以控制所述第一开关和所述第二开关。
5.如权利要求4所述的电池包,其中,
所述多个驱动电路中的一个驱动电路根据由所述控制装置所传送的所述控制信号来控制所述第一开关和所述第二开关的连接状态。
6.如权利要求5所述的电池包,其进一步包括:
监控电路,所述监控电路分别与所述多个电池模块相连接,并且被配置成监控所述多个电池模块的工作状态并将监控信号传送给所述控制装置;以及
电池监控单元,所述电池监控单元提供在所述控制装置内,并且被配置成接收所述监控电路的所述监控信号并分析所述监控信号,
其中所述控制装置根据所述电池监控单元对于所述电池模块的所述工作状态的判定结果来控制所述多个驱动电路。
7.一种电动车动力***,包括:
电池包,所述电池包包括多个串联连接的电池模块;
多个连接电路,所述连接电路中的每一个连接到相应的电池模块;
多个驱动电路,所述多个驱动电路与所述连接电路相连接并且被配置成控制所述连接电路中的每一个以选择性地断开所述电池模块中的一个或多个;
多个监控电路,所述多个监控电路分别与所述多个电池模块相连接并且被配置成监控所述多个电池模块的工作状态并传送监控信号;
控制装置,所述控制装置被配置成接收所述监控信号、至少部分地基于所述监控信号来确定电池状态信息,并且至少部分地基于所述电池状态信息来将开关信号传送给所述驱动电路中的一个或多个,
其中所述多个电池模块包括至少一个当前电池模块,所述当前电池模块在正常工作期间串联连接在第一电池模块与第二电池模块之间,并且所述开关信号使得所述当前电池模块从所述第一电池模块和所述第二电池模块断开,并且所述开关信号使得所述第一电池模块和所述第二电池模块直接串联连接。
8.如权利要求7所述的***,其中每个电池模块都具有正极端子和负极端子,并且每个连接电路都包括:
第一开关;
第二开关;以及
过桥,所述过桥包括彼此电气地连接的第一端点和第二端点;
其中所述第一开关将所述第一电池模块的所述负极端子与所述当前电池模块的所述正极端子选择性地连接或断开,并且对应地将所述第一电池模块的所述负极端子与所述过桥的所述第一端点断开或连接;
所述第二开关将所述第二电池模块的所述正极端子与所述当前电池模块的所述负极端子选择性地连接或断开,并且对应地将所述第二电池模块的所述正极端子与所述过桥的所述第二端点断开或连接。
9.如权利要求7所述的***,其中所述控制装置包括电池监控单元,所述电池监控单元通过所述监控电路来监控所述多个电池模块的工作电压V和工作温度T;
当所述当前电池模块的所述工作电压V小于下限Vbot1或者所述工作温度T大于上限Ttop1时,所述电池监控单元判定所述当前电池模块在异常状态下工作,并将指示所述异常状态的信号传送给所述控制装置的处理器。
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