CN106684504A - Half-immersion type liquid-cooling safety battery bag - Google Patents

Half-immersion type liquid-cooling safety battery bag Download PDF

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Publication number
CN106684504A
CN106684504A CN201710133459.2A CN201710133459A CN106684504A CN 106684504 A CN106684504 A CN 106684504A CN 201710133459 A CN201710133459 A CN 201710133459A CN 106684504 A CN106684504 A CN 106684504A
Authority
CN
China
Prior art keywords
battery
battery bag
immersion type
type liquid
cold
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.)
Withdrawn
Application number
CN201710133459.2A
Other languages
Chinese (zh)
Inventor
魏辉
顾江娜
龚晓冬
许祎凡
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.)
Suzhou Ankao Energy Co Ltd
Original Assignee
Suzhou Ankao Energy 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 Suzhou Ankao Energy Co Ltd filed Critical Suzhou Ankao Energy Co Ltd
Priority to CN201710133459.2A priority Critical patent/CN106684504A/en
Publication of CN106684504A publication Critical patent/CN106684504A/en
Withdrawn legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/60Heating or cooling; Temperature control
    • H01M10/61Types of temperature control
    • H01M10/613Cooling or keeping cold
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/60Heating or cooling; Temperature control
    • H01M10/61Types of temperature control
    • H01M10/617Types of temperature control for achieving uniformity or desired distribution of temperature
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/60Heating or cooling; Temperature control
    • H01M10/62Heating or cooling; Temperature control specially adapted for specific applications
    • H01M10/625Vehicles
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/60Heating or cooling; Temperature control
    • H01M10/65Means for temperature control structurally associated with the cells
    • H01M10/656Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
    • H01M10/6569Fluids undergoing a liquid-gas phase change or transition, e.g. evaporation or condensation
    • 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
    • H01M50/20Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2220/00Batteries for particular applications
    • H01M2220/20Batteries in motive systems, e.g. vehicle, ship, plane
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

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  • 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)
  • Battery Mounting, Suspending (AREA)

Abstract

The application discloses a half-immersion type liquid-cooling safety battery bag. The safety battery bag comprises a battery box composed of a box body and a box cover, and a battery pack held in the battery box; the battery pack comprises a plurality of battery monomers combined together in parallel; a liquid-cooling heat-exchanging device is arranged at the inner side of the box cover; a liquid material for only immersing the lower half part of each battery monomer is arranged in the box body; and the liquid material is the heat-adsorption and phase-change material with the boiling point in the range of 5-45 DEG C. On the one hand, the battery bag is located in a suitable use environment so that lost of heat produced in the running process of the battery bag can be immediately taken away; on the other hand, the battery monomers in the battery bag are uniform in temperature, the battery voltage difference caused by large temperature difference is avoided; the electrochemical property and the service life of the battery are effectively improved, and the thermal runaway hidden danger caused by local overheating can be avoided.

Description

The cold safety battery bag of half immersion type liquid
Technical field
The application is related to a kind of cell art, especially a kind of cold safety battery bag of half immersion type liquid.
Background technology
Due to national sustainable development policy and the inspiration of new-energy automobile encouragement policy, electric automobile has obtained rapidly sending out Exhibition, the new energy electric motor vehicle of energy-conserving and environment-protective is increasingly favored by consumer.The power of electric motor car is by set of cells to motor There is provided electric power to produce, but battery can generate heat when long-time is used, and particularly using under high temperature out of doors even can cause combustion The security incidents such as burning, battery-heating always hinders pure electric vehicle to put goods on the market, and is a big problem of operation, effectively cools down Electrokinetic cell working environment and service behaviour can be improved, so as to ensure the travel safety and reliability of electric automobile.
At present, the type of cooling of Vehicular battery is mainly air cooling, water-cooled, phase-change material cooling, and what is actually commonly used is Air cooling and water-cooling system, consist of vaporizer end to end successively in battery bag, compressor, condenser and throttle device Lowering the temperature, what is had increases outside cold wind circulating cooling system, the heat that will be produced in battery bag to cooling system also outside battery bag In bringing air into, cooling effect is reached with this.Air cooling and water-cooled implement fairly simple, and cost is relatively low, but due to sky Between it is limited, on the premise of battery inclusion quantity is not reduced, it is difficult to be further added by air cooling and water-cooling system equipment.Additionally, air-cooled and water The cold performance in temperature homogeneity is also unsatisfactory.So, Phase cooling has very for lifting battery pack temperature concordance Big advantage, is expected to develop into set of cells thermal management technology of new generation.
The content of the invention
The application purpose is:In order to battery pack temperature is too high in solve existing battery bag, internal battery pack temperature is homogeneous Property it is poor and the problem for affecting even to cause security incident is produced on battery performance, propose a kind of cold safety battery of half immersion type liquid Bag.On the one hand make battery bag be constantly in suitable use environment, the amount of heat of battery bag running generation is taken away in time. On the other hand make in battery bag that keeping temperature is homogeneous between each battery cell, avoid due to battery pressure reduction caused by excessive temperature differentials, The chemical property and service life of battery not only can be effectively improved, and thermal runaway caused by hot-spot can be avoided hidden Suffer from.
The technical scheme of the application is:The cold safety battery bag of half immersion type liquid of one kind, including:
The battery case being made up of casing and case lid, and
The set of cells being contained in the battery case, the set of cells includes the battery list that some connection in series-parallel are combined Body;
Liquid cold-heat-exchanging exchange system on its inside is provided with the case lid, being provided with the casing only will be in down The battery cell submergence of half part liquid in the inner, and the liquid is boiling point in the range of 5-45 DEG C Heat absorption phase-change material.
At least one of the liquid in HFC, hydrofluoroether, perfluocarbon.
The liquid cold-heat-exchanging exchange system includes coolant runner pipe and the coldplate being fixed on the case lid, the cooling The liquid in-out mouth of liquid runner pipe is stretched out outside the battery case.
The coldplate is arranged in the top of the coolant runner pipe.More preferably, the coolant runner pipe It is arranged in the surface in the set of cells centre.
The coolant runner pipe can also be arranged in inside the coldplate.More preferably, on the coldplate Form downwardly projecting some drops and drench raised, and at least a portion drop is drenched projection and is arranged in the set of cells central part The surface of position.
The liquid floods total height of the height less than the set of cells to the set of cells.
Adiabator layer is provided with the outside of the casing and case lid.
Unidirectional relief valve is installed on the casing or case lid.
The advantage of the application is:
1st, space is saved, it is to avoid the system equipment space requirement needed for air cooling, water-cooled.
2nd, the phase change material of liquid only floods the battery cell of lower part, and the design of half immersion greatlys save the liquid The consumption of phase change material, can equally ensure the temperature uniformity of set of cells while reduces cost.
3rd, phase change material only floods the battery cell of lower part, and its consumption is reduced, and reduces battery bag weight, improves battery bag Energy density.
Description of the drawings
In order to be illustrated more clearly that the technical scheme of the embodiment of the present application, below will be to use needed for embodiment description Accompanying drawing be briefly described, drawings in the following description are only some embodiments of the present application, for the common skill in this area For art personnel, on the premise of not paying creative work, can be with according to these other accompanying drawings of accompanying drawings acquisition.
Fig. 1 is the structural representation of the cold safety battery bag of half immersion type liquid in the embodiment of the present application;
Wherein:1- casings, 2- case lids, 3- battery cells, 4- liquids, 5- coldplates, 6- coolant runner pipes, a- steams Vapour, b- drops.
Specific embodiment
Such scheme is described further below in conjunction with specific embodiment.It should be understood that these embodiments are for illustrating The application and be not limited to limit scope of the present application.The implementation condition adopted in embodiment can be done according to the condition of concrete producer Further adjustment, not marked implementation condition is usually the condition in normal experiment.
Fig. 1 shows a specific embodiment of the cold safety battery bag of this half immersion type liquid of the application, with conventional batteries Bag identical is, it includes battery case and the set of cells being housed in the battery case, wherein battery case by open topped casing 1 And be encapsulated in the case lid 2 of the casing open-mouth and constitute, the battery case fully meets IP67 seal requests.Set of cells is high-capacity lithium Set of cells, it includes that (under normal circumstances, these battery cells rely on battery for battery cell 3 that numerous connection in series-parallel combine Fixture and the combination of connection in series-parallel current carrying lug link together).Can there is certain gap between each battery cell 3, but between being somebody's turn to do Gap is generally no greater than 5mm.
In the present embodiment, battery cell 3 is cylindrical lithium battery monomer.Certainly, the technical scheme of the application is equally fitted For the set of cells of other structures form, such as diamond type battery.
Obviously, constitute these numerous battery cells 3 of set of cells, an inevitable part be below and another in upper Side, " top " and " lower section " comparatively.Understanding of the reader to following technical proposals for convenience, we might as well be according to distribution position These battery cells are divided into upper strata battery cell and lower floor's battery cell by the difference put.
The key improvements of the present embodiment are that liquid cold-heat-exchanging exchange system on its inside, casing 1 are provided with case lid 2 Inside it is provided with the liquid 4 only by the battery cell 3 (i.e. above-mentioned lower floor's battery cell) in the latter half not in the inner (being liquid under normality), and the liquid 4 is that boiling point is the heat absorption phase-change material in the range of 5-45 DEG C.
Above-mentioned boiling point is the commodity that the liquid 4 in the range of 5-45 DEG C can be outsourcing, selectable to have HFC, hydrogen Fluorine ether, perfluocarbon etc., it is of course possible to using HFC, hydrofluoroether, the mixture of the combination of two of perfluocarbon or three The mixture for all combining.
In Fig. 1, flood total height that height be equal to the set of cells of the above-mentioned liquid 4 to set of cells, it is flooded to electricity The medium position of pond group.Certainly, we can also be selectively adjusted this and flood height according to actual needs so as to less than or it is big In the total height of set of cells.
Above-mentioned liquid cold-heat-exchanging exchange system can adopt various versions well-known to those skilled in the art, specifically at this In embodiment, the device includes coolant runner pipe 6 and the coldplate 5 being fixed on the case lid 2, and coolant runner pipe 6 liquid in-out mouth is stretched out outside battery case, and coolant is passed through to the coolant runner pipe 6 to facilitate.
Coldplate 5 and generally contact with each other arrangement in coolant runner pipe 6, so that the low temperature of coolant runner pipe 6 can Faster it is transferred to coldplate 5.Also, coldplate 5 to be arranged in the present embodiment the top of coolant runner pipe 6, to allow State the ebullition, gasification of liquid 4 to be fully contacted and heat release with the coldplate 5 and coolant runner pipe 6.And as far as possible should will Coolant runner pipe 6 is arranged in the surface in the centre of set of cells, is conducive to condensed liquid to drench higher in temperature Battery surface.
Certainly, we can also be arranged in coolant runner pipe 6 inside coldplate 5, so as to allow the two to be fully contacted, make The low temperature of coolant runner pipe 6 further can quickly pass to coldplate 5.In this case, preferably again on coldplate 5 into Downwardly projecting several (at least one) drop of type drenches raised, and at least a portion drop is drenched projection and is arranged in set of cells central part The surface of position, is conducive to condensed liquid to drench in the higher battery surface of temperature.
During practical application, when the battery pack system is charged or discharges, substantial amounts of heat can be produced, especially position There is a problem of that thermal diffusion environment is poor in the center of battery bag and bottom position, temperature rise compared with marginal portion battery cell more Substantially.And this battery bag of the present embodiment, the set of cells of the latter half flooded and reserves the first half of set of cells by liquid 4 It is point exposed outside, used as the heating source of liquid 4, temperature reaches liquid 4 to the heat that bottom battery running is produced Boiling point when, by thermal evaporation, liquid gasification absorbs the heat that battery is produced to liquid 4, then, by liquid-immersed that Battery is divided to reach the purpose of temperature reduction.To avoid battery case internal pressure builds, it is passed through in coolant runner pipe cold But water or other cooling liquids.Steam a in casing after gasification rises, and liquefaction (vapour and coldplate and cold occur to the cold But liquid runner pipe contact), into drop b, drip go back again.For battery, its state is similar to drip washing.The upper half being leached Percentage of batteries (not by immersion part) is higher due to temperature, when the liquid for falling after rise is in contact with it, ebullition, gasification occurs again and inhales Heat, so going up part battery temperature also can reduce, and being moved in circles with this is carried out so that battery bag is in relatively stable hot ring Run under border.
It can be appreciated that the present embodiment is arranged on above-mentioned liquid cold-heat-exchanging exchange system on case lid 2 rather than on casing 1, can be significantly Facilitate the assembling and maintenance of the battery bag.
Casing 1 and the outside of case lid 2 can increase adiabator layer, generally need to install unidirectional pressure release on casing 1 or case lid 2 Valve.
Above-described embodiment is only the technology design and feature for illustrating the application, its object is to allow people to will appreciate that this Shen Content please is simultaneously implemented according to this, can not limit the protection domain of the application with this.It is all according to the application main technical schemes Equivalent transformation or modification that spirit is done, all should cover within the protection domain of the application.

Claims (10)

1. the cold safety battery bag of a kind of half immersion type liquid, including:
The battery case being made up of casing (1) and case lid (2), and
The set of cells being contained in the battery case, the set of cells includes the battery cell that some connection in series-parallel are combined (3);
Characterized in that,
It is provided with liquid cold-heat-exchanging exchange system on its inside on the case lid (2), the casing (1) will be built with being only in down The battery cell (3) submergence of half part liquid (4) in the inner, and the liquid (4) is that boiling point is 5-45 Heat absorption phase-change material in the range of DEG C.
2. the cold safety battery bag of half immersion type liquid according to claim 1, it is characterised in that liquid (4) choosing At least one from HFC, hydrofluoroether, perfluocarbon.
3. the cold safety battery bag of half immersion type liquid according to claim 1, it is characterised in that the liquid cold-heat-exchanging exchange system Including the coolant runner pipe (6) and coldplate (5) that are fixed on the case lid (2), the turnover of the coolant runner pipe (6) Liquid mouth is stretched out outside the battery case.
4. the cold safety battery bag of half immersion type liquid according to claim 3, it is characterised in that coldplate (5) arrangement In the top of the coolant runner pipe (6).
5. the cold safety battery bag of half immersion type liquid according to claim 4, it is characterised in that the coolant runner pipe (6) it is arranged in the surface in the set of cells centre.
6. the cold safety battery bag of half immersion type liquid according to claim 3, it is characterised in that the coolant runner pipe (6) it is arranged in the coldplate (5) internal.
7. the cold safety battery bag of half immersion type liquid according to claim 6, it is characterised in that on the coldplate (5) into It is raised that type has downwardly projecting some drops to drench, and at least a portion drop is drenched projection and is arranged in the set of cells centre Surface.
8. the cold safety battery bag of half immersion type liquid according to claim 1, it is characterised in that the liquid (4) is right The set of cells flood height less than the set of cells total height.
9. the cold safety battery bag of half immersion type liquid according to claim 1, it is characterised in that the casing (1) and case lid (2) adiabator layer is provided with the outside of.
10. the cold safety battery bag of half immersion type liquid according to claim 1, it is characterised in that the casing (1) or case lid (2) unidirectional relief valve is installed on.
CN201710133459.2A 2017-03-08 2017-03-08 Half-immersion type liquid-cooling safety battery bag Withdrawn CN106684504A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
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Publications (1)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107134605A (en) * 2017-06-23 2017-09-05 四川国创成电池材料有限公司 One kind evaporation cooling flame-proof battery system
CN108215923A (en) * 2018-02-08 2018-06-29 中国科学院电工研究所 A kind of thermal management system of electric automobile
CN111864305A (en) * 2020-08-11 2020-10-30 大连理工大学 Two-phase immersed battery liquid cooling box for filling phase change capsules
CN112002954A (en) * 2020-07-14 2020-11-27 安徽汉马锂电科技有限公司 Liquid immersion cooling type power battery pack
CN112448064A (en) * 2019-08-30 2021-03-05 百度(美国)有限责任公司 Battery thermal management system with passive battery pack cooling
WO2021247778A1 (en) * 2020-06-03 2021-12-09 Wisk Aero Llc Battery with selective phase change features
CN115663351A (en) * 2022-12-28 2023-01-31 四川信息职业技术学院 New energy automobile power battery cooling device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101960657A (en) * 2008-01-04 2011-01-26 3M创新有限公司 Thermal management of electrochemical cells
DE102010013025A1 (en) * 2010-03-26 2011-09-29 Daimler Ag Vehicle battery e.g. lithium ion battery for hybrid car, has cooling plate arranged in housing for controlling temperature of battery, where plate is provided with molds, and cooling pipe held in molds in force and/or form fit manner
CN103996886A (en) * 2013-02-19 2014-08-20 微宏动力系统(湖州)有限公司 Cell module with heat-radiation capability
CN206893759U (en) * 2017-03-08 2018-01-16 苏州安靠电源有限公司 The cold safety battery bag of half immersion type liquid

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101960657A (en) * 2008-01-04 2011-01-26 3M创新有限公司 Thermal management of electrochemical cells
DE102010013025A1 (en) * 2010-03-26 2011-09-29 Daimler Ag Vehicle battery e.g. lithium ion battery for hybrid car, has cooling plate arranged in housing for controlling temperature of battery, where plate is provided with molds, and cooling pipe held in molds in force and/or form fit manner
CN103996886A (en) * 2013-02-19 2014-08-20 微宏动力系统(湖州)有限公司 Cell module with heat-radiation capability
CN206893759U (en) * 2017-03-08 2018-01-16 苏州安靠电源有限公司 The cold safety battery bag of half immersion type liquid

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107134605A (en) * 2017-06-23 2017-09-05 四川国创成电池材料有限公司 One kind evaporation cooling flame-proof battery system
CN108215923A (en) * 2018-02-08 2018-06-29 中国科学院电工研究所 A kind of thermal management system of electric automobile
CN108215923B (en) * 2018-02-08 2023-11-24 中国科学院电工研究所 Electric automobile thermal management system
CN112448064A (en) * 2019-08-30 2021-03-05 百度(美国)有限责任公司 Battery thermal management system with passive battery pack cooling
WO2021247778A1 (en) * 2020-06-03 2021-12-09 Wisk Aero Llc Battery with selective phase change features
US12021213B2 (en) 2020-06-03 2024-06-25 Wisk Aero Llc Battery with selective phase change features
CN112002954A (en) * 2020-07-14 2020-11-27 安徽汉马锂电科技有限公司 Liquid immersion cooling type power battery pack
CN112002954B (en) * 2020-07-14 2022-08-30 安徽汉马锂电科技有限公司 Liquid immersion cooling type power battery pack
CN111864305A (en) * 2020-08-11 2020-10-30 大连理工大学 Two-phase immersed battery liquid cooling box for filling phase change capsules
CN111864305B (en) * 2020-08-11 2024-04-16 大连理工大学 Two-phase immersion type battery liquid cooling box filled with phase-change capsules
CN115663351A (en) * 2022-12-28 2023-01-31 四川信息职业技术学院 New energy automobile power battery cooling device

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Application publication date: 20170517