WO2018117553A1 - Appareil de refroidissement de dispositif de charge/décharge de batterie - Google Patents

Appareil de refroidissement de dispositif de charge/décharge de batterie Download PDF

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Publication number
WO2018117553A1
WO2018117553A1 PCT/KR2017/014898 KR2017014898W WO2018117553A1 WO 2018117553 A1 WO2018117553 A1 WO 2018117553A1 KR 2017014898 W KR2017014898 W KR 2017014898W WO 2018117553 A1 WO2018117553 A1 WO 2018117553A1
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WO
WIPO (PCT)
Prior art keywords
battery
batteries
charging
charge
cooling
Prior art date
Application number
PCT/KR2017/014898
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English (en)
Korean (ko)
Inventor
임종현
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(주)에이프로
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Filing date
Publication date
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Publication of WO2018117553A1 publication Critical patent/WO2018117553A1/fr

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—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
    • H01M10/486—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for measuring temperature
    • 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
    • H01M10/44—Methods for charging or discharging
    • 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
    • H01M10/63—Control systems
    • 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
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
    • 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
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
    • H01M10/6557—Solid parts with flow channel passages or pipes for heat exchange arranged between the cells
    • 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
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
    • H01M50/209—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular cells
    • 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
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
    • H01M50/211—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for pouch cells
    • 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
    • H01M50/218—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material
    • H01M50/22—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material of the casings or racks
    • H01M50/222—Inorganic material
    • H01M50/224—Metals
    • 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

Definitions

  • the present invention relates to a cooling device for a battery charging and discharging device, and more particularly to a battery having an improved structure so that the heat generated during battery charging and discharging in the battery charging and discharging device can be effectively discharged evenly from the battery set loaded in the device. Exceeding the cooling device for charge and discharge devices.
  • водородн ⁇ е ⁇ е ⁇ ество Commercially available secondary batteries include nickel cadmium batteries, nickel hydride batteries, nickel zinc batteries, and lithium secondary batteries. Among them, lithium secondary batteries have almost no memory effect compared to nickel-based secondary batteries, and thus are free of charge and discharge. The self-discharge rate is very low and the energy density is high.
  • Such lithium secondary batteries mainly use lithium-based oxides and carbon materials as positive electrode active materials and negative electrode active materials, respectively.
  • the lithium secondary battery includes an electrode assembly in which a positive electrode plate and a negative electrode plate coated with the positive electrode active material and the negative electrode active material are disposed with a separator interposed therebetween, and a packaging material that seals the electrode assembly together with the electrolyte solution, that is, a battery case.
  • the electrode assembly may have a structure in which one positive electrode plate and one negative electrode plate are disposed to be wound with a separator interposed therebetween, and a plurality of positive electrode plates and a plurality of negative electrode plates may have a structure in which a separator is laminated therebetween.
  • the lithium secondary battery may be classified into a can type secondary battery and a pouch type secondary battery. That is, the can type secondary battery has a form in which the electrode assembly is embedded in a metal can, and the pouch type secondary battery has a form in which the electrode assembly is embedded in a pouch of an aluminum laminate sheet.
  • the electrode assembly is stored in a can-type secondary battery in a wound form, and the pouch type secondary battery is stored in a stacked form.
  • the electrode assembly is provided with an electrode tab. That is, the positive electrode tab of the electrode assembly is provided in the form of protruding positive electrode, the negative electrode plate is provided in the form of protruding negative electrode tab.
  • each of the electrode tabs may be provided with only one positive electrode tab and one negative electrode tab on the positive electrode plate and the negative electrode plate, and a plurality of electrode tabs may be provided.
  • the electrode tab is electrically connected to the external device through contact with the external device, and the secondary battery is supplied with or receives power from the external device through the electrode tab.
  • the secondary battery is manufactured through a battery activation step after receiving the electrode assembly in a case and injecting an electrolyte.
  • the battery activation step includes a process of charging and discharging the secondary battery under the conditions necessary for activation after mounting the secondary battery in the secondary battery charging and discharging device.
  • the secondary battery charging / discharging device is mainly used to charge or discharge the secondary battery in the above-described battery activation step, as well as to evaluate the performance of the secondary battery.
  • the secondary battery should be properly mounted on the secondary battery charge / discharge device. That is, the electrode tab of the secondary battery is disposed to be in contact with the terminal connection portion of the secondary battery charging and discharging device so that both are electrically connected, and such an electrical connection state must be maintained while charging and discharging is in progress.
  • the battery When the battery is disposed up, down, left, or right, it is uniformly cooled according to the positions of up, down, left, and right, so that the temperature variation between each battery is small. It is preferable.
  • An object of the present invention is to provide a cooling device for a battery charging / discharging device that can cool down while maintaining a uniform and effective heat generated while charging and discharging between battery sets when a battery set accommodating a plurality of batteries is present.
  • another object of the present invention is to provide a cooling device for a battery charge and discharge device that can improve the efficiency, durability, uniformity and stability and reliability of the battery.
  • FIG. 3 is a perspective view for explaining a position where a temperature sensor is disposed in connection with an experiment of the present invention
  • Figure 5a is a graph showing the temperature change of the charge-discharge device by the cooling unit of the present invention
  • Figure 5b is a graph showing the temperature change of the charge-discharge device by the cooling unit of the prior art as a comparative example
  • 6A and 6B are schematic diagrams for explaining the flow of wind generated in the cooling apparatus according to the present invention and schematic diagrams for explaining the flow of wind in the cooling apparatus according to another embodiment.
  • 110, 110a, 110b Battery set 120: Base
  • a cooling device for a battery charge / discharge device according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings. .
  • the vertical direction in which the battery sets 110a and 110b accommodating the batteries are stored.
  • the 'Y' axis direction and the forward and backward directions perpendicular to the XY plane are defined as the 'Z' axis directions, respectively.
  • reference numerals' 110 'or' 110a, 110b ' can be used if the battery sets are not specially distinguished, and if it is necessary to distinguish each battery set, the upper battery set is' 110a' and the lower battery set is' 110b '.
  • Charging and discharging device 100 as shown in Figure 1, the base 120 for supporting the battery set (110a, 110b) to accommodate the battery 10 including a plurality of secondary cells side by side;
  • the base 120 and the battery set 110a and 110b which are supported by the base 120 so as to be in electrical contact with and released from a positive terminal (not shown) and a negative terminal (not shown) of each battery 10.
  • a control unit of the charge / discharge device 100 may control a set time, a set voltage, and a current for charging and discharging to activate the inside of the battery 10. Activating of the battery 10 is performed by monitoring the charge / discharge state.
  • the battery 10 may include various types, but for convenience of description, the battery 10 will be described by taking one battery constituting the battery 10 to the battery cell included in the battery package used as an example.
  • the manufacturing / production process and structure of the battery 10 before and after charging and discharging are not highly related to the characteristic parts of the present invention, and thus detailed description thereof will be omitted below.
  • the battery set 110 may be provided in multiple stages, but for convenience of description, the battery set 110 includes two upper battery sets 110a and a lower battery set 110b.
  • the battery 10 will be described as being spaced apart at equal intervals in 36 plate shapes.
  • Such batteries have positive and negative terminals (not shown) that protrude so that they can be electrically connected to the outside.
  • the control unit receives a signal indicating that the base 120 of the charging and discharging device 100 is supported or fixed by a moving means such as a robot and the charging and discharging is completed.
  • the robot may separate the battery sets 110a and 110b from which the charging and discharging is completed from the base 120 and seat the battery sets 110a and 110b to be newly charged and discharged on the base 120.
  • the battery sets 110a and 110b have been described in the example of being stacked in two stages, it may be loaded in three stages and the like, and of course, more batteries 10 may be accommodated.
  • the charging and discharging device 100 may be disposed in plural in series and / or in parallel in a predetermined space to continuously work through a robot or the like.
  • the base 120 supports the battery sets 110a and 110b, and the charge / discharge operation unit 130 is coupled to the base 120.
  • the charge / discharge operation unit 130 detects when the battery set 110 is seated in the correct position and moves to the battery set 110 to combine the battery 10 to supply power to the set charge / discharge time, It may be operated by a control unit (not shown) that monitors the charge / discharge state such as voltage and the number of times and moves to the original position after completing the operation, and may control the operation. Since this is not related to the characteristics of the present invention, a detailed description will be omitted below.
  • the efficiency or performance of the battery 10 is lowered, and durability is not only reduced.
  • the risk of heat eg partial burnout, explosions, etc.
  • the battery 10 in the same battery set 110 emits heat uniformly or equally and minimize the temperature deviation as much as possible. In many cases, this can be affected by the efficiency, stability and durability of the battery.
  • the cooling unit 170 may include a cross flow type fan in which a region in which wind is discharged is integrally provided to discharge the air volume in the same direction and a constant amount through the entire length.
  • the wind discharged by the structure of the cooling unit 170 is moved between the plate-shaped battery 10 arranged at regular intervals to maintain a constant and uniform flow without generating vortex. That is, it is preferable that one cooling unit 170 according to the present invention is provided rather than a plurality of small cooling fans as shown in FIGS. 4A and 4B of the related art. And, whether the failure of the cooling unit 170 is automatically determined by the control unit due to a sudden change of the temperature sensor 180 to be described later (for example, the temperature sensor 180 on one side than the other side is more than 3 degrees difference And alerts).
  • the temperature sensor 180 is coupled to the upper side of the charge and discharge operation unit 130 as close to the battery 10 as shown in Figure 3 to detect the temperature of the battery 10 to the region adjacent to the battery 10. Can be.
  • the temperature sensor 180 installed as shown in FIG. 3 while repeatedly charging and discharging with the same charging voltage and current. Temperature was measured by time using.
  • the temperature difference between the batteries accommodated in the upper and lower battery sets is not large in the charging and discharging process in the charging and discharging process according to the present invention.
  • the activation rate can be made uniform, and even after a long time as a product can be improved durability and it can be seen that the structure is simple compared to the comparative example.
  • the cooling unit 270 is divided into several parts, so that the amount of air supplied to the battery is not uniformly induced between the batteries, and vortices are generated due to the characteristics of the axial flow fan, and mutual air flows between the fans.
  • the interference was found to be based on the fact that the flow of air was not uniform between each battery.
  • This phenomenon can be expected to decrease the cooling effect of the battery when the vortex occurs between each battery because the battery interval between the battery cells 110 is narrow.
  • the two left cooling units 370 on the X-axis supply wind at an angle to the right side by side between the batteries and the two cooling units 370 on the right side obliquely wind to the right.
  • it can also be arranged in the form of discharge.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Automation & Control Theory (AREA)
  • Secondary Cells (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

La présente invention comprend : une base supportant un ensemble de batteries qui contient des batteries en parallèle les unes avec les autres, les batteries comprenant de multiples batteries secondaires ; et une partie de refroidissement couplée à un dispositif de charge/décharge ayant une partie d'opération de charge/décharge prévue pour pouvoir entrer en contact électrique avec des électrodes positive et négative faisant saillie à partir des batteries contenues dans l'ensemble de batteries, la partie de refroidissement étant prévue pour pouvoir évacuer la chaleur générée par les batteries au cours du processus de charge/décharge répétée et du processus d'activation des batteries. La partie de refroidissement est supportée sur la base ou sur la partie d'opération de charge/décharge de telle sorte que de l'air peut être induit uniformément dans une direction parallèle entre les batteries qui sont contenues dans l'ensemble de batteries, qui ont des formes de plaque, et qui sont espacées l'une de l'autre. Selon la présente invention, lorsque des ensembles de batteries contenant de multiples batteries existent, l'écart de température de refroidissement entre des ensembles de batteries respectifs peut être réduit efficacement, ce qui permet d'améliorer l'efficacité d'activation de batterie liée à la charge/décharge ; les processus peuvent être maintenus de manière stable ; et la durabilité, l'uniformité et la fiabilité des batteries peuvent être améliorées.
PCT/KR2017/014898 2016-12-19 2017-12-15 Appareil de refroidissement de dispositif de charge/décharge de batterie WO2018117553A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020160173939A KR101816843B1 (ko) 2016-12-19 2016-12-19 배터리 충방전 장치용 냉각장치
KR10-2016-0173939 2016-12-19

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108735974A (zh) * 2018-05-18 2018-11-02 东莞塔菲尔新能源科技有限公司 一种锂电池极片快速冷却系统及其工作流程
CN112119525A (zh) * 2019-01-10 2020-12-22 株式会社Lg化学 二次电池及其制造方法

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102351291B1 (ko) 2018-03-08 2022-01-13 주식회사 엘지에너지솔루션 온도 편차가 개선된 이차전지의 활성화 공정을 위한 충방전 장치
KR102369355B1 (ko) 2018-12-21 2022-02-28 주식회사 엘지에너지솔루션 이차전지용 이동형 온도측정기구 및 냉각팬을 포함하는 충방전 장치
KR20220108972A (ko) 2021-01-28 2022-08-04 주식회사 엘지에너지솔루션 단열 패드를 포함하는 이차전지 충방전 시스템 및 이를 이용한 이차전지 충방전 시스템의 온도 제어방법
US20240063645A1 (en) * 2021-11-19 2024-02-22 Lg Energy Solution, Ltd. Battery cell charging and discharging apparatus including lower cooling fan

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KR200331886Y1 (ko) * 2003-07-21 2003-11-01 주식회사 컨버테크 전지 충방전기
KR100937897B1 (ko) * 2008-12-12 2010-01-21 주식회사 엘지화학 신규한 공냉식 구조의 중대형 전지팩
KR101319862B1 (ko) * 2012-06-07 2013-10-18 주식회사 피앤이솔루션 전지 충,방전기의 환기장치
KR20150025685A (ko) * 2013-08-30 2015-03-11 주식회사 엘지화학 이차전지의 충방전용 장치 및 이를 이용하는 이차전지의 활성화 방법
KR20150034945A (ko) * 2013-09-27 2015-04-06 주식회사 엘지화학 이차전지의 충방전용 장치

Patent Citations (5)

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Publication number Priority date Publication date Assignee Title
KR200331886Y1 (ko) * 2003-07-21 2003-11-01 주식회사 컨버테크 전지 충방전기
KR100937897B1 (ko) * 2008-12-12 2010-01-21 주식회사 엘지화학 신규한 공냉식 구조의 중대형 전지팩
KR101319862B1 (ko) * 2012-06-07 2013-10-18 주식회사 피앤이솔루션 전지 충,방전기의 환기장치
KR20150025685A (ko) * 2013-08-30 2015-03-11 주식회사 엘지화학 이차전지의 충방전용 장치 및 이를 이용하는 이차전지의 활성화 방법
KR20150034945A (ko) * 2013-09-27 2015-04-06 주식회사 엘지화학 이차전지의 충방전용 장치

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108735974A (zh) * 2018-05-18 2018-11-02 东莞塔菲尔新能源科技有限公司 一种锂电池极片快速冷却系统及其工作流程
CN112119525A (zh) * 2019-01-10 2020-12-22 株式会社Lg化学 二次电池及其制造方法

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