CN111081930A - Fireproof lithium ion battery module - Google Patents
Fireproof lithium ion battery module Download PDFInfo
- Publication number
- CN111081930A CN111081930A CN201911210022.XA CN201911210022A CN111081930A CN 111081930 A CN111081930 A CN 111081930A CN 201911210022 A CN201911210022 A CN 201911210022A CN 111081930 A CN111081930 A CN 111081930A
- Authority
- CN
- China
- Prior art keywords
- coolant
- lithium ion
- battery module
- ion battery
- cells
- 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.)
- Pending
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
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
-
- 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
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion 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
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/613—Cooling or keeping cold
-
- 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
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
- H01M10/6567—Liquids
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
- H01M50/24—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries from their environment, e.g. from corrosion
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Secondary Cells (AREA)
- Materials Engineering (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The invention discloses a fireproof lithium ion battery module. As an electrical energy storage device, the module includes a housing, a plurality of lithium ion cells connected in parallel or series, a circulating coolant, and other auxiliary components. The circulating cooling liquid is nonflammable and insulating, has the function of isolating air, and cannot react with air or the cooling liquid when a single lithium ion cell is damaged or leaked. The circulating coolant may reduce the risk of fire after the battery module experiences physical loss, and also help to keep the temperature of the entire battery module constant.
Description
Technical Field
The disclosed embodiments are generally applicable to energy storage devices. More particularly, the disclosed embodiments relate to a lithium ion battery module with a fireproof and explosion-proof design, wherein the lithium ion battery module is composed of a plurality of lithium ion battery units, and in order to better prevent overheating or explosion caused by fire after damage, the lithium ion battery module is filled with a non-combustible, non-conductive and inert coolant to isolate air and control temperature.
Background
Fire accidents caused by lithium ion batteries still occur in electric vehicles and in energy storage devices based on lithium ion batteries. The lithium ion battery module is composed of a plurality of lithium ion battery units, although the energy density is high, because substances in the lithium battery, including electrolyte, have very high activity, the lithium battery module is easy to have violent reaction with air due to leakage when physical loss is experienced, and fire and even explosion are caused. Although there are some designs of lithium battery modules that are fire-proof and explosion-proof, the effect is limited, and fire caused by lithium batteries still frequently occurs. Therefore, there is still a great need to develop new lithium ion battery module structures, and the modules have excellent safety in addition to the basic characteristics of high energy density, long service life, fast charge and discharge rate, and the like.
The invention discloses an insulating and fire-proof coolant-immersed lithium ion battery module, structurally referred to a wet lead-acid battery, the lithium ion cells being flooded by a circulating non-combustible, non-conductive and inert coolant. In addition to isolating the li-ion battery cells from air, the circulating coolant also helps to keep the temperature of all cells constant, which is important for the safety of the module.
Summary of the invention
(1) The present invention addresses the above-mentioned problems by providing composite structures for storing electrical energy and methods of making such structures. The structure comprises a shell, a plurality of lithium ion units connected in parallel or in series, circulating coolant, a coolant inlet, a coolant outlet, a pressure valve, a positive electrode, a negative electrode and other auxiliary components. The composite structure is composed of a plurality of lithium ion cells and is referred to as a lithium ion battery module.
(2) One aspect of the invention relates to articles that include a volume that may contain a liquid and other components that are sealed inside, and may have an inlet, an outlet, a pressure valve, positive and negative electrodes, and other electrical leads that pass through openings in the wall. The housing wall thickness may be from 0.1 mm to 1000 mm. The size of the housing is not limited by any number and depends on design requirements. The material of the housing may be plastic, metal, wood or other strong material. The inlet and pressure valve are preferably mounted on the top wall near the rim. The pressure valve is used for releasing redundant gas in the tank and releasing the pressure in the tank when any unit fails and gas is possibly generated or leaked. The outlet is preferably selected from the lower portion of the side wall. The positive and negative electrodes are preferably in the center of the upper and lower walls, but are not limited to these positions. The small opening through which the wire passes can be on either side of the wall. The size of the opening in the wall of the tank is not limited by any number, depending on the design requirements.
(3) The article of manufacture also includes a plurality of lithium ion cells, which may be connected in parallel or in series, or both. The lithium ion unit cell may be any type of lithium ion cell, such as a cylindrical cell or a cylindrical cell. The connection method and connection material between the multiple units may be different according to design requirements. The high-voltage end of the battery after connection is connected with the positive electrode of the battery by using a conducting wire or direct welding. The low-voltage end of the battery after connection is connected with the negative electrode. The battery also needs to be variously connected to an external battery management system (BMS for short) through wires.
(4) The article of manufacture also includes a circulating coolant which is non-flammable, non-conductive and most importantly non-reactive with the internal materials of the cell in the event of a rupture or leak in the cell. For example, the coolant may be deionized ultrapure water, ethylene glycol, carbon tetrachloride, ethylene tetrachloride, silicone oil, or a mixture of two or more liquids. However, the choice of coolant is not limited to these five chemical liquids and other liquids that are non-flammable, non-conductive, and non-reactive with the cell interior materials, and may be chosen to prevent cell rupture or leakage. The coolant is supplied into the tank from an inlet of the circulation pump and returned to the circulation pump through an outlet. It is well known that temperature changes within the working cell increase the inconsistency of its internal resistance, posing a risk to the battery management system. Circulating coolant helps to maintain a constant temperature for all units, thereby greatly reducing the risk of module failure and fire. The cooling liquid should in this case flood all the cells. The coolant may completely or partially fill the housing.
Description of the drawings
(1) For a better understanding of the above-described aspects of the present invention, as well as other aspects and embodiments of the present invention, reference should be made to the following description of embodiments, taken in conjunction with the following drawings, wherein reference numerals in the drawings refer to corresponding parts throughout the figures. For clarity, features in the drawings are not drawn to scale.
Fig. 1 is a schematic cross-section illustrating a method of fabricating a coolant-flooded lithium ion battery module, according to some embodiments.
Detailed description of the invention
(1) The disclosed embodiments relate to structures that use coolant flooded lithium ion battery modules to store electrical energy.
(2) In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without these specific details. In other instances, methods, procedures, and components that would be known by one of ordinary skill have not been described in detail so as not to obscure aspects of the present invention.
(3) It is to be understood that "housing" refers to a container containing most of the components of the battery module-this case is not limited to a cubic shape-it may be cylindrical or other shape with empty space in it.
(4) It is understood that "Unit cell" refers to a basic lithium ion battery cell constituting a battery module. These battery cells are not limited to the cylindrical cells shown in fig. 1. They may be any type of small lithium ion battery.
(5) It is also understood that "coolant" refers to the liquid that floods the cells and fills the housing. The coolant is comprised of a mixture of one or more chemical liquids. The coolant is powered in circulation by an external pump.
(6) The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in the description of the invention and the appended claims, the singular forms "a," "an," and "the" include plural referents unless the context clearly dictates otherwise. It is also to be understood that the terms "a" and/or "an," as used herein, refer to and encompass any and all possible combinations of one or more of the associated listed items. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
(7) Embodiments of the present invention are described with reference to cross-sectional illustrations that are schematic illustrations of idealized embodiments (and intermediate structures) of the present invention. Accordingly, variations from the shapes of the illustrations, for example, manufacturing techniques and/or tolerances, are to be expected. Thus, embodiments of the invention should not be construed as limited to the particular shapes of regions illustrated in the present invention but are to include deviations in shapes that result, for example, from manufacturing. Thus, the regions illustrated in the figures are schematic in nature and their shapes are not intended to illustrate the actual shape of a region of a device and are not intended to limit the scope of the invention.
(8) Unless otherwise defined, all terms, including technical and scientific terms, used in disclosing embodiments of the invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs and are not necessarily limited to being described in this invention. Accordingly, these terms may include equivalent terms created after this time. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of this specification and the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein. All publications, patent applications, patents, and other references mentioned herein are incorporated by reference in their entirety.
(9) Fig. 1 is a schematic diagram of the structural design of a coolant flooded lithium ion battery module.
(10) The battery module is in the case of a robust container (001, in fig. 1) that is chemically stable to the coolant that fills it. The housing may be opened to place the assembly inside, or may be sealed to prevent internal coolant leakage. In some embodiments, a plastic material is used to make the housing. In some embodiments, metal or wood materials may also be used.
(11) In fig. 1, 001 represents the case of the battery module. In some embodiments, a plastic material is used to make the housing. In some embodiments, metal or wood materials are used. This case is not limited to the cubic shape in fig. 1.
(12) In fig. 1, 002 denotes an inlet of the circulating coolant. Preferably on top of the box, but not limited to that position. It is connected with a circulating pump.
(13) In fig. 1, 003 denotes an outlet of the circulating coolant. It is preferably located in the lower part of the side wall of the tank, but is not limited to this position. It is connected with a circulating pump.
(14) In fig. 1, 004 denotes a pressure valve, the purpose of which is to relieve any overpressure in the battery case. It is preferably on the top wall but is not limited to this location.
(15) In fig. 1,005, the positive electrode of the battery is shown. It is made of conductive metal and is preferably mounted on the wall of the roof, but is not limited to this location.
(16) In fig. 1, 006 denotes a negative electrode of the battery. It is made of conductive metal and is preferably mounted on the bottom wall, but not limited to this location.
(17) In fig. 1, 007 denotes a lithium ion unit cell constituting the module. The lithium ion unit cell is not limited to the cylindrical battery shown in fig. 1, but may be other types of batteries.
(18) In fig. 1, 008 denotes a metal wire or a metal band connecting unit cells in parallel or in series, or both of the positive and negative electrodes.
(19) In fig. 1, 009 represent circulating coolant, which fills the enclosure and floods all of the cells. The coolant is non-flammable, non-conductive, and will not react with the internal materials of the cell in the event of a rupture or leak in the cell. For example, the coolant may be deionized ultra-pure water, ethylene glycol, carbon tetrachloride, ethylene tetrachloride, silicone oil, or a mixture of two or more liquid chemicals. However, the choice of coolant is not limited to these five chemicals and other liquid chemicals, which are non-flammable, non-conductive, non-reactive with the cell interior materials, and may also be chosen to prevent cell rupture or leakage.
(20) In fig. 1, 010 denotes an electric wire that passes through the housing wall and connects the unit with an external battery management system, which monitors and manages all units within the housing, abbreviated as BMS in fig. 1.
(21) The foregoing description, for purpose of explanation, has been described with reference to specific embodiments. However, the illustrative discussions above are not intended to be exhaustive or to limit the invention to the precise forms disclosed. Many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best utilize the invention and various embodiments with various modifications as are suited to the particular use contemplated.
Claims (4)
1. A fireproof lithium ion battery module as an electrical energy storage device, comprising a housing, a plurality of lithium ion cells connected in parallel or series, circulating coolant and other auxiliary components, characterized in that the structure is referred to wet lead acid batteries, the lithium ion cells being flooded with circulating non-combustible, non-conductive and inert coolant. Besides isolating the lithium ion battery cells from air, the circulating coolant can play a role in fire and explosion protection and also help to keep the temperature of all the cells constant.
2. A fire-resistant lithium ion battery module according to claim 1, characterized in that the lithium battery safety and temperature control problem of claim 1 is solved by providing composite structures for storing electrical energy and methods of manufacturing these structures.
3. The lithium ion battery module of claim 2, wherein the structure comprises a housing, a plurality of lithium ion cells connected in parallel or in series, a circulating coolant, a coolant inlet, a coolant outlet, a pressure valve, a positive electrode, a negative electrode, and other auxiliary components. The composite structure is composed of a plurality of lithium ion cells and is referred to as a lithium ion battery module.
4. The structure and chemical composition of a li-ion battery module for high power supply of claim 1, wherein the circulating coolant, which is non-flammable, non-conductive and most importantly non-reactive with the cell's internal materials in case of cell rupture or leakage. For example, the coolant may be deionized ultrapure water, ethylene glycol, carbon tetrachloride, tetrachloroethylene, silicone oil, or a mixture of two or more of these compounds. However, the choice of coolant is not limited to these five chemical liquids, and other liquids that are non-flammable, non-conductive, and non-reactive with the cell interior materials may be chosen to prevent cell rupture or leakage. The coolant is supplied from the inlet of the module into the tank by a circulation pump and returned to the circulation pump through an outlet. The temperature difference of each lithium battery unit can increase the inconsistency of the internal resistance of the lithium battery unit, and risks are brought to the whole battery management system. Circulating coolant helps to maintain a constant temperature for all units, thereby greatly reducing the risk of module failure and fire. The coolant should flood all the cells. The coolant may completely or partially fill the interior space of the housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911210022.XA CN111081930A (en) | 2019-11-29 | 2019-11-29 | Fireproof lithium ion battery module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911210022.XA CN111081930A (en) | 2019-11-29 | 2019-11-29 | Fireproof lithium ion battery module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111081930A true CN111081930A (en) | 2020-04-28 |
Family
ID=70312360
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911210022.XA Pending CN111081930A (en) | 2019-11-29 | 2019-11-29 | Fireproof lithium ion battery module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111081930A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113794006A (en) * | 2021-11-16 | 2021-12-14 | 山东旭尊电子科技有限公司 | Mounting structure of lithium cell group for electric automobile |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101504986A (en) * | 2009-03-02 | 2009-08-12 | 江苏伊思达电池有限公司 | Fire and explosion proof type secondary batteries system having highly efficient cooling function |
| CN201425957Y (en) * | 2009-06-12 | 2010-03-17 | 成志雄 | Flame-retardant anti-explosion device of water-cooling type lithium ion battery |
| CN103682511A (en) * | 2012-09-13 | 2014-03-26 | 微宏动力系统（湖州）有限公司 | Electric automobile |
| CN105229846A (en) * | 2013-05-13 | 2016-01-06 | 波音公司 | For active heat management and the thermal runaway prevention of lithium ion battery with high energy density group |
| CN106410322A (en) * | 2016-10-25 | 2017-02-15 | 惠州市亿鹏能源科技有限公司 | Battery liquid-cooling heat-dissipating device |
| CN107634272A (en) * | 2016-07-18 | 2018-01-26 | 上海奇谋能源技术开发有限公司 | A kind of method for improving lithium ion battery safety in utilization |
| CN107851864A (en) * | 2015-08-14 | 2018-03-27 | 微宏动力系统（湖州）有限公司 | Battery pack |
-
2019
- 2019-11-29 CN CN201911210022.XA patent/CN111081930A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101504986A (en) * | 2009-03-02 | 2009-08-12 | 江苏伊思达电池有限公司 | Fire and explosion proof type secondary batteries system having highly efficient cooling function |
| CN201425957Y (en) * | 2009-06-12 | 2010-03-17 | 成志雄 | Flame-retardant anti-explosion device of water-cooling type lithium ion battery |
| CN103682511A (en) * | 2012-09-13 | 2014-03-26 | 微宏动力系统（湖州）有限公司 | Electric automobile |
| CN105229846A (en) * | 2013-05-13 | 2016-01-06 | 波音公司 | For active heat management and the thermal runaway prevention of lithium ion battery with high energy density group |
| CN107851864A (en) * | 2015-08-14 | 2018-03-27 | 微宏动力系统（湖州）有限公司 | Battery pack |
| CN107634272A (en) * | 2016-07-18 | 2018-01-26 | 上海奇谋能源技术开发有限公司 | A kind of method for improving lithium ion battery safety in utilization |
| CN106410322A (en) * | 2016-10-25 | 2017-02-15 | 惠州市亿鹏能源科技有限公司 | Battery liquid-cooling heat-dissipating device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113794006A (en) * | 2021-11-16 | 2021-12-14 | 山东旭尊电子科技有限公司 | Mounting structure of lithium cell group for electric automobile |
| CN113794006B (en) * | 2021-11-16 | 2022-02-18 | 山东旭尊电子科技有限公司 | Mounting structure of lithium cell group for electric automobile |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR102044409B1 (en) | Battery pack including cartridge for secondary battery | |
| US7767337B2 (en) | Bipolar battery and a biplate assembly | |
| CN103682188B (en) | Flame-proof explosion-proof battery pack | |
| US9048028B2 (en) | Hybrid electrochemical cell systems and methods | |
| CN112018320B (en) | Box for battery, electric device, method and equipment for preparing battery | |
| KR20180113809A (en) | Battery module and battery pack including the same | |
| CN216213729U (en) | Battery monomer, battery and consumer | |
| US12002984B2 (en) | Battery, apparatus, and preparation method and preparation apparatus of battery | |
| CN219801087U (en) | Lower plastic, end cover assembly, battery and energy storage device | |
| KR102234223B1 (en) | Secondary Battery with improved Stability having Heat Expandable Tape and Method thereof | |
| CN111081930A (en) | Fireproof lithium ion battery module | |
| JP7043813B2 (en) | Partition members and assembled batteries | |
| CN211556057U (en) | Explosion-proof device for lithium battery | |
| US10978730B2 (en) | Ionized gas metal core battery | |
| JP3603290B2 (en) | Sealed organic electrolyte battery | |
| CN114883714B (en) | High-capacity battery | |
| JP2024507420A (en) | Battery housing, battery, power consumption device, battery manufacturing method and device | |
| KR102135629B1 (en) | Battery Pack Comprising Fire Extinguishing Agent | |
| CN218414902U (en) | Battery pack and electric device | |
| CN220652194U (en) | Support member for winding cell and winding cell assembly | |
| CN221226529U (en) | Battery monomer, battery and power consumption device | |
| CN218939874U (en) | Battery and electricity utilization device | |
| KR102686170B1 (en) | Batteries and related devices, manufacturing methods and manufacturing equipment | |
| KR102660873B1 (en) | Battery pack with improved safety | |
| CN220544082U (en) | Spiral built-in lithium battery box |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20200428 |