WO2015074495A1 - 一种防止电池包内部积液的系统及其控制方法 - Google Patents

一种防止电池包内部积液的系统及其控制方法 Download PDF

Info

Publication number
WO2015074495A1
WO2015074495A1 PCT/CN2014/090490 CN2014090490W WO2015074495A1 WO 2015074495 A1 WO2015074495 A1 WO 2015074495A1 CN 2014090490 W CN2014090490 W CN 2014090490W WO 2015074495 A1 WO2015074495 A1 WO 2015074495A1
Authority
WO
WIPO (PCT)
Prior art keywords
battery pack
battery
liquid
management system
accumulation
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2014/090490
Other languages
English (en)
French (fr)
Inventor
阎小军
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wuhu Power Technology Research Co Ltd
Chery Automobile Co Ltd
Original Assignee
Wuhu Power Technology Research Co Ltd
Chery Automobile Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wuhu Power Technology Research Co Ltd, Chery Automobile Co Ltd filed Critical Wuhu Power Technology Research Co Ltd
Publication of WO2015074495A1 publication Critical patent/WO2015074495A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Images

Classifications

    • 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
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/4228—Leak testing of cells or batteries
    • 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
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION 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
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
    • B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
    • B60L50/64—Constructional details of batteries specially adapted for electric vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION 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
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
    • B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
    • B60L50/66—Arrangements of batteries
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION 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
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • 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
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • H01M10/4257—Smart batteries, e.g. electronic circuits inside the housing of the cells or batteries
    • 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
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/4285—Testing apparatus
    • 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
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • H01M2010/4278—Systems for data transfer from batteries, e.g. transfer of battery parameters to a controller, data transferred between battery controller and main controller
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2220/00—Batteries for particular applications
    • H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
    • 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
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries
    • 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
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries
    • 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
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10—Technologies relating to charging of electric vehicles
    • Y02T90/16—Information or communication technologies improving the operation of electric vehicles

Definitions

  • the invention relates to the technical field of electric vehicle power battery systems.
  • the battery pack can only be alarmed when there is a serious abnormality in the collected voltage and SOC data, and thus there is a hidden danger of the safety, performance and life of the battery.
  • the technical problem to be solved by the present invention is to realize a system capable of solving the accidental accumulation of liquid inside the battery pack.
  • the technical solution adopted by the present invention is: a system for preventing liquid accumulation inside a battery pack, wherein a sealed battery pack housing is internally fixed with a battery management system and a battery body, and a bottom surface of the battery pack housing is provided with a liquid level
  • the sensor and the solenoid valve are both connected to a battery management system, and the solenoid valve communicates with the inside and outside of the battery pack housing.
  • the battery pack casing is composed of a battery pack upper casing and a battery pack lower casing, and the bottom surface of the battery pack lower casing is composed of a plurality of lower casing bottom plates, and the lower casing bottom plate has a leak therebetween.
  • the liquid gap, the liquid leakage gap is provided with a battery package beam, the battery package beam has a cavity protruding from the battery package casing, and the liquid level sensor and the electromagnetic valve are both fixed in the battery package beam.
  • the bottom surface of the lower casing of the battery pack is provided with a plurality of battery pack beams, and each of the battery pack beams is provided with a liquid level sensor and a solenoid valve.
  • the liquid level sensor is a two-way probe type liquid level sensor for monitoring the liquid level inside and outside the battery pack case, or a liquid level sensor is arranged inside and outside the battery pack beam.
  • the battery management system outputs an effluent alarm signal to the alarm unit of the vehicle cab.
  • the battery pack housing is further provided with a power battery module, and the battery pack housing is provided with an anti-corrosion coating inside and outside.
  • a control method for preventing internal liquid accumulation in a battery pack which works as follows:
  • the liquid level sensor collects information on whether there is liquid accumulation inside and outside the battery pack case in real time, and sends it to the battery management system;
  • the battery management system obtains information that there is liquid accumulation in the battery pack case and there is no liquid accumulation outside the battery pack case, only the solenoid valve in the battery pack beam in which the liquid leakage phenomenon is opened is controlled.
  • the battery management system issues an alarm signal to the in-vehicle alarm unit when the solenoid valve signal is turned on, and sends a liquid leakage signal to the in-vehicle communication unit, and the vehicle identification unit transmits the vehicle identification information, the liquid leakage information, and the vehicle coordinate information. To the remote server.
  • the invention belongs to an active battery pack system for preventing internal liquid accumulation, has a reasonable structure, simple process, does not increase the weight of the battery pack, has low cost, and can effectively solve the problem of liquid accumulation inside the battery pack.
  • the battery in the battery pack leaks electrolyte, which is usually not easy to find.
  • the battery electrolyte contains a variety of chemical substances, which are often corrosive and flammable, causing corrosion to structural parts inside the battery pack. If the high-current busbar, the connection row, and the terminal are corroded, and the surface oxide layer is generated, the contact resistance is increased, the temperature rise of the large current loop is abnormally increased, and the electrolyte has a flammable component and has a risk of spontaneous combustion.
  • FIG. 1 is a schematic structural view of a liquid collecting system for preventing internal battery packs
  • FIG 2 is a partial enlarged schematic view of the battery pack beam shown in Figure 1;
  • the markings in the above figures are: 1, battery management system; 2, power battery module; 3, battery pack upper casing; 4, battery pack beam; 5, battery pack lower casing; 6, lower casing bottom plate; , liquid level sensor; 8, liquid level; 9, solenoid valve.
  • the system for preventing internal liquid accumulation in the battery pack is provided with a liquid level sensor 7 and a solenoid valve 9 on the bottom surface of the battery pack case.
  • the battery is packaged under the housing. 5
  • the bottom surface is designed to be composed of a plurality of lower casing bottom plates 6, and the lower casing bottom plates 6 have a liquid leakage gap therebetween.
  • the gaps are sealed by the battery package beam 4, such as As shown in FIG. 2, the battery pack cross member 4 has a cavity protruding from the battery pack case, and the liquid level sensor 7 and the solenoid valve 9 are both fixed in the battery pack cross member 4.
  • the liquid tank of the battery pack beam 4 has a small volume and is designed to have a small bottom area and is very sensitive to the amount of liquid accumulated, as long as a small amount of liquid is accumulated, the liquid level of the liquid tank in the battery pack beam 4 is raised. High, the liquid level sensor 7 receives a signal of the accumulated liquid.
  • a battery pack beam 4 is disposed between both ends of the battery pack casing and between the respective devices, and a liquid level sensor 7 and a solenoid valve 9 are disposed in each of the battery pack beams 4 to ensure signal collection and drainage.
  • all the liquid level sensor 7 and the solenoid valve 9 are connected to the battery management system 1
  • the solenoid valve 9 is connected to the inside and outside of the battery pack casing
  • the battery management system 1 outputs an accumulating alarm signal to the car cab alarm unit and
  • the communication unit the above design structure is not only low in cost, but also does not increase the weight of the battery pack.
  • the liquid level sensor 7 is provided inside and outside the battery pack case, so that when there is water standing outside, the solenoid valve 9 is not opened, and the liquid level sensor 7 can be used.
  • a two-way probe type liquid level sensor 7 designed to monitor the liquid level inside and outside the battery pack housing, or a liquid level sensor 7 is provided inside and outside the battery pack cross member 4.
  • the battery pack shell is provided with anti-corrosion coating inside and outside, which makes it have a high anti-corrosion grade.
  • control method for preventing internal liquid accumulation in the battery pack is as follows:
  • the liquid level sensor 7 collects information on whether there is liquid accumulation inside and outside the battery pack case in real time, and sends it to the battery management system 1;
  • the control solenoid valve 9 When the battery management system 1 obtains information that there is liquid accumulation in the battery pack casing and there is no liquid accumulation outside the battery pack casing, the control solenoid valve 9 is opened, and the battery management system 1 controls to disconnect the corresponding key high and low voltage circuits to avoid leakage and short circuit. , spontaneous combustion or even explosions and other serious accidents. However, it does not affect the operation of the liquid level sensor 7, the electromagnetic valve 8 and the battery management system 1, and simultaneously sends an alarm signal to the in-vehicle alarm unit, and sends a liquid leakage signal to the in-vehicle communication unit, and the vehicle identification unit issues vehicle identification information and leakage.
  • the liquid information and the vehicle coordinate information are sent to the remote server, and the remote server is generally sold after, so that the after-sales staff can promptly notify the owner of the vehicle and solve the problem of the vehicle failure for the owner of the vehicle;
  • the battery management system 1 obtains information that there is liquid in the battery case and there is no liquid outside the battery case, only the battery with liquid leakage is controlled.
  • the solenoid valve 9 in the cross member 4 is wrapped to minimize the exchange of air inside and outside the battery pack housing.
  • the system can prevent internal liquid accumulation in the battery pack, and has wide applicability to the system structure. It can be used on various battery packs, and the active battery pack anti-sinking method plays an active role in the safety, performance and life of the battery pack. The role.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Sustainable Energy (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Battery Mounting, Suspending (AREA)
  • Secondary Cells (AREA)

Abstract

本发明揭示了一种防止电池包内部积液的系统，密封的电池包壳体内部固定有电池管理系统和蓄电池本体，电池包壳体内的底面设有液位传感器和电磁阀且均与电池管理系统连接，所述的电磁阀连通电池包壳体内外。本发明属于主动式电池包防内部积液的系统，结构合理，工艺简单，不增加电池包的重量，成本低，能够有效的解决电池包内部积液的问题。

Description

一种防止电池包内部积液的系统及其控制方法 技术领域
本发明涉及电动车动力电池系统技术领域。
背景技术
随着社会经济的日益发展，能源需求进一步提高，新能源技术的呼声越来越高，目前在汽车行业中，纯电动汽车和混合动力汽车技术的进一步发展解决了部分能源问题，但是也存在诸多的弊端，比如电池系统集成技术的滞后，带来的安全问题等。具体的说，电动汽车动力电池存在漏液的风险、电动车可能会在积水路面上涉水行驶、电池包的密封防护结构失效等等因素，都会导致电池包内部有积液的风险，存在漏电、短路、自燃甚至爆炸等安全隐患。
针对上述问题，目前，电池包只能靠采集电压和SOC数据出现严重异常时才能报警，因而存在电池的安全、性能和寿命隐患。
发明内容
本发明所要解决的技术问题是实现一种能够解决电池包内部意外积液的系统。
为了实现上述目的，本发明采用的技术方案为：一种防止电池包内部积液的系统，密封的电池包壳体内部固定有电池管理系统和蓄电池本体，电池包壳体内的底面设有液位传感器和电磁阀且均与电池管理系统连接，所述的电磁阀连通电池包壳体内外。
所述的电池包壳体由电池包上壳体和电池包下壳体构成，所述的电池包下壳体底面由多块下壳体底板构成，所述的下壳体底板之间具有漏液间隙，所述的漏液间隙设有电池包横梁，所述的电池包横梁具有凸出于电池包壳体的空腔，所述的液位传感器和电磁阀均固定在电池包横梁内。
所述的电池包下壳体底面设有多个电池包横梁，每个所述的电池包横梁内均设有液位传感器和电磁阀。
所述的液位传感器为监测电池包壳体内外液面的双向探头式液位传感器，或者所述的电池包横梁内外各设有一个液位传感器。
所述的电池管理系统输出积液报警信号至汽车驾驶室内报警单元。
所述的电池包壳体内部还设有动力电池模块，且电池包壳体内外均设有防腐涂层。
一种防止电池包内部积液的控制方法，按照以下方法工作：
系统启动；
液位传感器实时采集电池包壳体内外是否有积液的信息，并输送至电池管理系统；
当电池管理系统获得电池包壳体内具有积液且电池包壳体外无积液的信息时，控制电磁阀开启；
当电池管理系统获得电池包壳体内无积液的信息时，控制电磁阀关闭。
进一步的，当电池管理系统获得电池包壳体内具有积液且电池包壳体外无积液的信息时，仅控制开启存在漏液现象的电池包横梁内的电磁阀。
当电池管理系统控制开启电磁阀的同时断开相应的关键高低压电路。
进一步的，电池管理系统发出开启电磁阀信号的同时发出报警信号至车内报警单元，以及发出漏液信号至车载通信单元，并由车载通信单元发出车辆识别信息、漏液信息以及车辆坐标信息发送至远端服务器。
本发明属于主动式电池包防内部积液的系统，结构合理，工艺简单，不增加电池包的重量，成本低，能够有效的解决电池包内部积液的问题。
采用本系统后可以有效避免以下风险：
1、电池包内的电池出现漏电解液，通常不易发现。电池电解液含有多种成份的化学物质，常具有腐蚀性、易燃性，会对电池包内部的结构件产生腐蚀。如果对大电流母线、连接排、端子腐蚀，产生表面氧化层，就会导致接触电阻增大，大电流回路的温升异常增大，而且电解液有易燃成份，有自燃的风险。即使没有出现自燃，对大电流母线、连接排、端子腐蚀，产生表面氧化层，会导致接触电阻增大，大电流回路的温升异常增大，而且影响最大是这种腐蚀及其影响对各处的母线、连接排、端子状况不一致，造成电池的温度、温升都不一致，使得电池的性能、寿命受到影响，会对产品质保期5年或10万公里的承诺构成风险。
2、通常电池包设计要求密封防护等级达到IP67，但是，如果密封防护等级IP67出现失效，电池包在涉水时就会进水，而且不易发现。这种现象会对大电流母线、连接排、端子腐蚀，产生表面氧化层，就会导致接触电阻增大，大电流回路的温升异常增大，而且影响最大是这种腐蚀及其影响对各处的母线、连接排、端子状况不一致，造成电池的温度、温升都不一致，使得电池的性能、寿命受到影响，会对产品质保期5年或10万公里的承诺构成风险。而且，电池包内部进水，会引起漏电、短路、自燃甚至爆炸等安全隐患问题的出现。
下面结合附图和具体实施例，对本发明的技术方案进行详细地说明。
附图说明
图1为防止电池包内部积液系统的结构示意图；
图2为图1中所示电池包横梁的局部放大示意图；
上述图中的标记均为：1、电池管理系统；2、动力电池模块；3、电池包上壳体；4、电池包横梁；5、电池包下壳体；6、下壳体底板；7、液位传感器；8、积液面；9、电磁阀。
具体实施方式
参见图1可知，本发明防止电池包内部积液的系统是在电池包壳体内的底面增设液位传感器7和电磁阀9，为确保监测准确性以及排液的效率，将电池包下壳体5底面设计成由多块下壳体底板6拼构而成，这些下壳体底板6之间具有漏液间隙，为保证电池包壳体的密封性，这些间隙由电池包横梁4密封，如图2所示，电池包横梁4具有凸出于电池包壳体的空腔，液位传感器7和电磁阀9均固定在电池包横梁4内。由于电池包横梁4的盛液槽体积很小，并设计其槽底面积小、对积液量非常敏感，只要有少量的积液，就会使电池包横梁4中盛液槽的液面升高，被液位传感器7接收到有积液的信号。
通常电池包壳体内的两端以及中间各个器件之间均设有电池包横梁4，且每个电池包横梁4内斗设有液位传感器7和电磁阀9，从而确保信号采集以及排液的准确、及时，所有的的液位传感器7和电磁阀9均与电池管理系统1连接，电磁阀9连通电池包壳体内外，同时电池管理系统1输出积液报警信号至汽车驾驶室内报警单元和通信单元，上述设计结构不仅使用成本低，也不会增加电池包的重量。
为了避免电池壳体外的水渗入壳体内，造成电池损耗加速，在电池包壳体内外均要设置液位传感器7，以便外部有积水时，不开启电磁阀9，我们可以将液位传感器7设计成监测电池包壳体内外液面的双向探头式液位传感器7，或者在电池包横梁4内外各设有一个液位传感器7。为避免壳体腐蚀影响其密封性能，电池包壳体内外均设有防腐涂层，使其具有较高防腐蚀等级。
基于上述系统，防止电池包内部积液的控制方法如下：
系统启动；
液位传感器7实时采集电池包壳体内外是否有积液的信息，并输送至电池管理系统1；
当电池管理系统1获得电池包壳体内具有积液且电池包壳体外无积液的信息时，控制电磁阀9开启，电池管理系统1控制断开相应的关键高低压电路，避免出现漏电、短路、自燃甚至爆炸等现象和恶性事故。但不影响液位传感器7、电磁阀8和电池管理系统1的工作，同时发出报警信号至车内报警单元，以及发出漏液信号至车载通信单元，并由车载通信单元发出车辆识别信息、漏液信息以及车辆坐标信息发送至远端服务器，远端服务器一般为售后，方便售后工作人员及时通知车主，以及为车主解决车辆故障问题；
当电池管理系统1获得电池包壳体内无积液的信息时，控制电磁阀9关闭。
为确保排液顺畅同时也避免电池包壳体内部受到污染，当电池管理系统1获得电池包壳体内具有积液且电池包壳体外无积液的信息时，仅控制开启存在漏液现象的电池包横梁4内的电磁阀9，从而尽可能减少电池包壳体内外空气的交换。
该系统可以防止电池包内部积液，系统结构适用性广，可以使用在各类电池包上，主动式的电池包防积液方法，为电池包的安全、性能、寿命等方面，起到了积极的作用。
上面结合附图对本发明进行了示例性描述，显然本发明具体实现并不受上述方式的限制，只要采用了本发明的方法构思和技术方案进行的各种非实质性的改进，或未经改进将本发明的构思和技术方案直接应用于其它场合的，均在本发明的保护范围之内。

Claims (10)

  1. 一种防止电池包内部积液的系统，密封的电池包壳体内部固定有电池管理系统(1)和蓄电池本体，其特征在于：电池包壳体内的底面设有液位传感器(7)和电磁阀(9)且均与电池管理系统(1)连接，所述的电磁阀(9)连通电池包壳体内外。
  2. 根据权利要求1所述的防止电池包内部积液的系统，其特征在于：所述的电池包壳体由电池包上壳体(3)和电池包下壳体(5)构成，所述的电池包下壳体(5)底面由多块下壳体底板(6)构成，所述的下壳体底板(6)之间具有漏液间隙，所述的漏液间隙设有电池包横梁(4)，所述的电池包横梁(4)具有凸出于电池包壳体的空腔，所述的液位传感器(7)和电磁阀(9)均固定在电池包横梁(4)内。
  3. 根据权利要求2所述的防止电池包内部积液的系统，其特征在于：所述的电池包下壳体(5)底面设有多个电池包横梁(4)，每个所述的电池包横梁(4)内均设有液位传感器(7)和电磁阀(9)。
  4. 根据权利要求3所述的防止电池包内部积液的系统，其特征在于：所述的液位传感器(7)为监测电池包壳体内外液面的双向探头式液位传感器(7)，或者所述的电池包横梁(4)内外各设有一个液位传感器(7)。
  5. 根据权利要求4所述的防止电池包内部积液的系统，其特征在于：所述的电池管理系统(1)输出积液报警信号至汽车驾驶室内报警单元。
  6. 根据权利要求1-5中任一项所述的防止电池包内部积液的系统，其特征在于：所述的电池包壳体内部还设有动力电池模块(2)，且电池包壳体内外均设有防腐涂层。
  7. 一种防止电池包内部积液的控制方法，其特征在于：
    系统启动；
    液位传感器(7)实时采集电池包壳体内外是否有积液的信息，并输送至电池管理系统(1)；
    当电池管理系统(1)获得电池包壳体内具有积液且电池包壳体外无积液的信息时，控制电磁阀(9)开启；
    当电池管理系统(1)获得电池包壳体内无积液的信息时，控制电磁阀(9)关闭。
  8. 根据权利要求7所述的防止电池包内部积液的控制方法，其特征在于：当电池管理系统(1)获得电池包壳体内具有积液且电池包壳体外无积液的信息时，仅控制开启存在漏液现象的电池包横梁(4)内的电磁阀(9)。
  9. 根据权利要求7所述的防止电池包内部积液的控制方法，其特征在于：当电池管理系统(1)控制开启电磁阀(9)的同时断开相应的关键高低压电路。
  10. 根据权利要求7所述的防止电池包内部积液的控制方法，其特征在于：电池管理系统(1)发出开启电磁阀(9)信号的同时发出报警信号至车内报警单元，以及发出漏液信号至车载通信单元，并由车载通信单元发出车辆识别信息、漏液信息以及车辆坐标信息发送至远端服务器。
PCT/CN2014/090490 2013-11-21 2014-11-06 一种防止电池包内部积液的系统及其控制方法 Ceased WO2015074495A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201310590472.2A CN103579702B (zh) 2013-11-21 2013-11-21 一种防止电池包内部积液的系统及其控制方法
CN201310590472.2 2013-11-21

Publications (1)

Publication Number Publication Date
WO2015074495A1 true WO2015074495A1 (zh) 2015-05-28

Family

ID=50050994

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2014/090490 Ceased WO2015074495A1 (zh) 2013-11-21 2014-11-06 一种防止电池包内部积液的系统及其控制方法

Country Status (2)

Country Link
CN (1) CN103579702B (zh)
WO (1) WO2015074495A1 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115214332A (zh) * 2021-03-30 2022-10-21 本田技研工业株式会社 电动车辆

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103579702B (zh) * 2013-11-21 2016-01-06 奇瑞新能源汽车技术有限公司 一种防止电池包内部积液的系统及其控制方法
CN105226212B (zh) * 2015-08-27 2017-08-04 苏州市博得立电源科技有限公司 一种智能滤波式电池供电盒
CN106197854A (zh) * 2016-06-27 2016-12-07 宁德时代新能源科技股份有限公司 一种电池包进水的判断方法和装置
CN106299538B (zh) * 2016-09-14 2018-08-03 安徽舟之航电池有限公司 一种电池包风口防护装置
CN107221720A (zh) * 2017-07-05 2017-09-29 浙江众泰汽车制造有限公司 液冷电池pack漏液保护系统及使用该系统的汽车
CN108199097A (zh) * 2017-12-05 2018-06-22 威睿电动汽车技术（苏州）有限公司 一种基于车辆动力电池箱的检测系统及其检测方法
CN112259937B (zh) 2019-07-05 2025-02-25 宁德时代新能源科技股份有限公司 电池包
CN112864513A (zh) * 2019-11-28 2021-05-28 标致雪铁龙汽车股份有限公司 一种电池包结构及车辆
CN112018461A (zh) * 2020-08-21 2020-12-01 常州瑞德丰精密技术有限公司 电池包、电动车及储能装置
CN112140910A (zh) * 2020-09-29 2020-12-29 东风汽车集团有限公司 一种具有储液、排液及液位监测功能的电池包
WO2024082171A1 (zh) * 2022-10-19 2024-04-25 宁德时代新能源科技股份有限公司 电池、用电装置及电池的排液方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201646343U (zh) * 2010-04-22 2010-11-24 杨鹏波 新型蓄电池车辆环保装置
CN102227831A (zh) * 2008-12-24 2011-10-26 三菱重工业株式会社 电池组件
CN103208598A (zh) * 2012-01-16 2013-07-17 微宏动力系统（湖州）有限公司 电池组及其漏液检测方法
CN103579702A (zh) * 2013-11-21 2014-02-12 奇瑞汽车股份有限公司 一种防止电池包内部积液的系统及其控制方法

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3753092B2 (ja) * 2002-03-11 2006-03-08 三協アルミニウム工業株式会社 支柱構造体
CN201440843U (zh) * 2009-03-13 2010-04-28 韩方崇 报警花盆
JP2011181415A (ja) * 2010-03-02 2011-09-15 Sanyo Electric Co Ltd 安定化回路を備えるバッテリパック

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102227831A (zh) * 2008-12-24 2011-10-26 三菱重工业株式会社 电池组件
CN201646343U (zh) * 2010-04-22 2010-11-24 杨鹏波 新型蓄电池车辆环保装置
CN103208598A (zh) * 2012-01-16 2013-07-17 微宏动力系统（湖州）有限公司 电池组及其漏液检测方法
CN103579702A (zh) * 2013-11-21 2014-02-12 奇瑞汽车股份有限公司 一种防止电池包内部积液的系统及其控制方法

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115214332A (zh) * 2021-03-30 2022-10-21 本田技研工业株式会社 电动车辆
CN115214332B (zh) * 2021-03-30 2024-05-14 本田技研工业株式会社 电动车辆
US12148909B2 (en) 2021-03-30 2024-11-19 Honda Motor Co., Ltd. Electric vehicle

Also Published As

Publication number Publication date
CN103579702A (zh) 2014-02-12
CN103579702B (zh) 2016-01-06

Similar Documents

Publication Publication Date Title
WO2015074495A1 (zh) 一种防止电池包内部积液的系统及其控制方法
CN102823055B (zh) 用于能量存储单元的监视系统
WO2023036037A1 (zh) 基于多种类、多数量传感器的智能电池监测预警方法及系统
US10992013B2 (en) Battery system for a vehicle and method for detecting an overheat situation of the battery system
US20160315363A1 (en) Device and method for monitoring an energy store and energy store having the device
CN211828872U (zh) 一种矿用隔爆电源装置
KR20200053522A (ko) 이차 전지의 이상 검지 시스템 및 이차 전지의 이상 검출 방법
EP2577331B1 (en) A battery connection failure detection system
CN107452991A (zh) 用于电动车辆的热故障检测器
CN109698310B (zh) 一种管道连通型电源系统及其安全管理方法
CN102081144B (zh) 蓄电池故障监控告警装置及系统
CN103299476A (zh) 具有控制装置的蓄电池和用于使该蓄电池运行的方法
WO2014004523A1 (en) Battery cell with temperature sensor
CN109585715A (zh) 电池及使用该电池的电池模组、电池箱和车辆
US20240047774A1 (en) Secondary Battery And Monitoring System Of Secondary Battery
CN103847505A (zh) 用于交通工具的安全装置及用于控制其的方法
US20180241028A1 (en) Lithium ion battery system having temperature control function
CN207345510U (zh) 一种汽车用智能型高压控制盒
CN217157440U (zh) 基于多种类、多数量传感器的智能电池监测预警系统
CN116315208A (zh) 检测模块、电池单体、管理系统及方法、电池及用电装置
CN208990109U (zh) 一种集装箱式锂电储能用灭火系统
CN113629331A (zh) 一种锂电池自动消防储能柜
CN111584954A (zh) 一种电池环境的处理装置和具有其的电池系统、车辆
CA2706503C (en) A battery connection failure detection system
CN102520021A (zh) 一种在线监测防腐衬里浆液罐体设备腐蚀状况的方法

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 14863843

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 14863843

Country of ref document: EP

Kind code of ref document: A1

32PN Ep: public notification in the ep bulletin as address of the adressee cannot be established

Free format text: NOTING OF LOSS OF RIGHTS PURSUANT TO RULE 112(1) EPC 8 EPO FORM 1205A DATED 14-02-2016)

122 Ep: pct application non-entry in european phase

Ref document number: 14863843

Country of ref document: EP

Kind code of ref document: A1