WO2018117553A1 - Battery charging/discharging device cooling apparatus - Google Patents

Battery charging/discharging device cooling apparatus 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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Prior art keywords
battery
batteries
charging
charge
cooling
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PCT/KR2017/014898
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French (fr)
Korean (ko)
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임종현
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(주)에이프로
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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

The present invention comprises: a base supporting a battery set that contains batteries in parallel with each other, the batteries comprising multiple secondary batteries; and a cooling portion coupled to a charging/discharging device having a charging/discharging operation portion provided to be able to electrically contact positive and negative electrodes protruding from the batteries contained in the battery set, the cooling portion being provided to be able to release heat generated by the batteries in the process of repeatedly charging/discharging and activating the batteries. The cooling portion is supported on the base or on the charging/discharging operation portion such that air can be induced evenly in a parallel direction between the batteries which are contained in the battery set, which have plate shapes, and which are spaced from each other. According to the present invention, when battery sets containing multiple batteries exist, the cooling temperature deviation between respective batteries sets can be reduced effectively, thereby improving charging/discharging-related battery activation efficiency; processes can be stably maintained; and the durability, uniformity, and reliability of the batteries can be improved.

Description

배터리 충방전 장치용 냉각장치Cooling device for battery charge / discharge device
본 발명은, 배터리 충방전 장치용 냉각장치에 관한 것으로, 구체적으로 배터리 충방전 장치에서 배터리 충방전시 발행하는 열을 효과적이면서 장치에서 적재된 배터리세트에서 균일하게 방출시킬 수 있도록 구조를 개선한 배터리 충방전 장치용 냉각장치에 과한 것이다.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.
최근에 노트북, 비디오 카메라, 휴대용 전화기 등과 같은 휴대용 전자 제품의 수요가 급격하게 증대되고, 전기자동차, 에너지 저장용 축전지, 로봇, 위성 등의 개발이 본격화됨에 따라, 반복적인 충방전이 가능한 고성능 배터리인 이차 전지에 대한 연구가 활발히 진행되고 있다.Recently, as the demand for portable electronic products such as laptops, video cameras, mobile phones, etc. is rapidly increased, and development of electric vehicles, energy storage batteries, robots, satellites, etc. is in earnest, high-performance batteries capable of repeatedly charging and discharging Research on secondary batteries is being actively conducted.
현재 상용화된 이차 전지로는 니켈 카드뮴 전지, 니켈 수소 전지, 니켈 아연 전지, 리튬 이차 전지 등이 있는데, 이 중에서 리튬 이차 전지는 니켈 계열의 이차 전지에 비해 메모리 효과가 거의 일어나지 않아 충방전이 자유롭고, 자가 방전율이 매우 낮으며 에너지 밀도가 높은 장점으로 각광을 받고 있다.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.
이러한 리튬 이차 전지는 주로 리튬계 산화물과 탄소재를 각각 양극 활물질과 음극 활물질로 사용한다. 리튬 이차 전지는, 이러한 양극 활물질과 음극 활물질이 각각 도포된 양극판과 음극판이 세퍼레이터를 사이에 두고 배치된 전극 조립체와, 전극 조립체를 전해액과 함께 밀봉 수납하는 외장재, 즉 전지 케이스를 구비한다.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.
전극 조립체는 하나의 양극판 및 하나의 음극판이 세퍼레이터를 사이에 두고 배치되어 권취되는 형태의 구조를 가질 수도 있고, 다수의 양극판 및 다수의 음극판이 세퍼레이터를 사이에 두고 적층된 형태의 구조를 가질 수도 있다. 이러한 전극 조립체가 금속 캔에 수납되는지, 또는 파우치에 수납되는지에 따라 리튬 이차 전지는 캔형 이차 전지와 파우치형 이차 전지로 분류될 수 있다. 즉, 캔형 이차 전지는 전극 조립체가 금속 캔에 내장되는 형태이며, 파우치형 이차 전지는 전극 조립체가 알루미늄 라미네이트 시트의 파우치에 내장되는 형태이다. 통상적으로 캔형 이차 전지에는 전극 조립체가 권취된 형태로 수납되고, 파우치형 이차 전지에는 전극 조립체가 적층된 형태로 수납된다.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. . Depending on whether the electrode assembly is housed in a metal can or a pouch, 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. Typically, 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.
한편, 이러한 전극 조립체에는 전극 탭이 구비된다. 즉, 전극 조립체의 양극판에는 양극 탭이 돌출된 형태로 구비되며, 음극판에는 음극 탭이 돌출된 형태로 구비된다. 이때, 이러한 전극 탭은 양극판과 음극판에 각각 양극탭과 음극 탭 한 개씩만 구비될 수 있고, 다수 개가 구비될 수도 있다. 이러한 전극 탭은 외부 장치와 접촉을 통해 외부 장치와 전기적으로 연결되고, 이차 전지는 이러한 전극 탭을 통해 외부 장치에 전력을 공급하거나 외부 장치로부터 전력을 공급받게 된다.On the other hand, 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. In this case, 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.
한편, 이차 전지는 전극 조립체를 케이스에 수납하고 전해질을 주입하는 단계를 거친 후 전지 활성화 단계를 거쳐 제조된다. 여기서, 전지 활성화 단계는 이차 전지 충방전 장치에 이차 전지를 장착한 후, 활성화에 필요한 조건으로 이차 전지를 충방전하는 과정을 포함한다. 이와 같이 이차 전지 충방전 장치는 상술한 전지 활성화 단계에서 이차 전지를 충전하거나 방전하는데 주로 사용되는데, 이뿐만 아니라 이차 전지의 성능 평가 용도 등으로 사용되기도 한다.Meanwhile, the secondary battery is manufactured through a battery activation step after receiving the electrode assembly in a case and injecting an electrolyte. Here, 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. As described above, 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.
그런데, 이와 같이 이차 전지 충방전 장치를 이용하여 이차 전지를 올바르게 충전하거나 방전하기 위해서는 이차 전지가 이차 전지 충방전 장치에 제대로 장착되어야 한다. 즉, 이차 전지의 전극 탭이 이차 전지 충방전 장치의 단자접속부에 접하도록 배치되어 양자가 전기적으로 연결되어야 하고, 충방전이 진행되는 동안에 이러한 전기적 연결 상태가 유지되어야 한다.However, in order to properly charge or discharge the secondary battery using the secondary battery charge / discharge device as described above, 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.
이러한 충방전 장치에서 다수의 배터리를 한 번에 수용하여 충방전을 수회 반복하여야 하므로 이 과정에서 배터리에서 열이 발생하게 된다. 특히, 배터리는 열에 취약하고 배터리가 과열되면 폭발 등을 유발하는 경우도 신문 지상에 보도되고 있다. 즉, 배터리가 초기 제조되어 활성화되는 과정인 충방전 등의 경우에도 열을 최대한 방출하는 것이 바람직하고 이 과정에서 배터리 상호 간의 온도 편차가 높다면 배터리 내부의 활성화 정도도 상이할 수 있어 추후 사용시 온도에 따른 영향이 달라져 제품의 수명, 성능 등에 영향을 미칠 수도 있다. In such a charging and discharging device, since a plurality of batteries are accommodated at one time, charging and discharging must be repeated several times, thereby generating heat from the battery. In particular, batteries are vulnerable to heat, and if the battery is overheated, it may cause an explosion or the like on the newspaper. That is, it is preferable to discharge heat as much as possible in the case of charge / discharge, which is a process in which the battery is initially manufactured and activated. If the temperature variation between the batteries is high during this process, the degree of activation inside the battery may be different. The impact may vary and affect the life and performance of the product.
따라서, 충방전 장치에서 배터리에서 발생되는 열을 보다 효과적으로 방출하는 것이 바람직하고 배터리 등이 상하, 좌우로 배치된 경우 상하, 좌우 등의 위치에 따라 상호 균일하게 냉각되어 각 배터리 사이의 온도 편차가 적은 것이 바람직하다. Therefore, it is preferable to discharge heat generated from the battery more effectively in the charging and discharging device. 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.
[관련 문헌][Related literature]
공개특허공보 제10-2015-0050209호 (2015.05.08. 공개)Publication No. 10-2015-0050209 (published May 8, 2015)
공개특허공보 제10-2015-0049890호 (2015.05.08. 공개)Publication No. 10-2015-0049890 (published May 8, 2015)
본 발명의 목적은, 다수의 배터리를 수용하는 배터리세트가 존재하는 경우 배터리세트 사이에서 충방전되면서 발생하는 열을 효과적으로 균일하게 유지하면서 냉각시킬 수 있는 배터리 충방전 장치용 냉각장치를 제공하는 것이다.SUMMARY OF THE INVENTION 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.
또한, 본 발명의 다른 목적은, 배터리의 효율, 내구성, 균일성 및 안정성 및 신뢰성을 향상시킬 수 있는 배터리 충방전 장치용 냉각장치를 제공하는 것이다.In addition, 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.
또한, 본 발명의 또 다른 목적은, 구조가 간단하고 사용이 편리한 배터리 충방전 장치용 냉각장치를 제공하는 것이다.Still another object of the present invention is to provide a cooling device for a battery charge / discharge device having a simple structure and easy to use.
본 발명의 목적은, 다수의 2차전지를 포함하는 배터리를 나란하게 수용하는 배터리세트를 지지하는 베이스와 상기 배터리세트에 수용된 배터리에서 돌출된 양극과 음극에 전기적으로 접촉 가능하게 마련된 충방전작동부를 갖는 충방전 장치에 결합되어, 상기 배터리가 반복적으로 충방전되어 활성화되는 과정에서 상기 배터리에서 발생하는 열을 방출 가능하게 마련된 냉각부;를 구비하고, 상기 냉각부는 상기 배터리세트에 수용된 판 형상의 이격된 배터리 사이로 나란한 방향으로 균일하게 공기를 유도 가능하게 상기 베이스 또는 충방전작동부에 지지된 것을 특징으로 하는 배터리 충방전 장치용 냉각 장치에 의하여 달성된다.An object of the present invention has a base for supporting a battery set including a plurality of secondary cells side by side and a charge-discharge operation portion provided to be in electrical contact with the positive and negative electrodes protruding from the battery contained in the battery set And a cooling unit coupled to a charging / discharging device, the cooling unit being configured to release heat generated from the battery while the battery is repeatedly charged and discharged and activated, wherein the cooling unit is spaced apart from each other in a plate shape accommodated in the battery set. It is achieved by the cooling device for a battery charge-discharge device, characterized in that supported on the base or the charge-discharge operation unit to induce air uniformly in a parallel direction between the batteries.
또한, 상기 냉각부는 상기 배터리세트에 지지된 배터리가 중첩된 길이인 상기 배터리세트의 폭에 대응하여 길게 일체로 구비된 것이 바람직하다.In addition, the cooling unit is preferably integrally provided with a length corresponding to the width of the battery set is the length of the battery supported on the battery set overlap.
또한, 상기 냉각부는 크로스 플로우(cross flow) 타입의 팬을 포함하는 것이 바람직하다.In addition, the cooling unit preferably includes a cross flow type fan.
또한, 상기 냉각부는 상기 베이스 또는 상기 충방전작동부에 지지되어 상기 배터리세트에 수용된 배터리가 지지된 위치와 대응한 위치에 틸팅 가능하게 결합되어 공기 흐름의 방향을 조절할 수 있는 것이 바람직하다.In addition, the cooling unit is preferably supported by the base or the charging and discharging operation unit can be tilted to a position corresponding to the position where the battery accommodated in the battery set is supported to adjust the direction of the air flow.
본 발명에 따르면, 다수의 배터리를 수용하는 배터리세트가 존재하는 경우 배터리세트 사이에서 충방전되면서 발생하는 열을 효과적으로 균일하게 유지하면서 냉각시킬 수 있는 배터리 충방전 장치용 냉각장치를 제공할 수 있다.According to the present invention, when there is a battery set for accommodating a plurality of batteries, it is possible to provide a cooling device for a battery charging / discharging device that can cool down while effectively maintaining uniform heat generated while charging and discharging between battery sets.
또한, 배터리의 효율, 내구성, 균일성 및 안정성 및 신뢰성을 향상시킬 수 있고, 구조가 간단하고 사용이 편리한 배터리 충방전 장치용 냉각장치를 제공할 수 있다.In addition, it is possible to improve the efficiency, durability, uniformity and stability and reliability of the battery, it is possible to provide a cooling device for a battery charge and discharge device having a simple structure and easy to use.
도 1은 본 발명의 일실시예에 따른 충방전 장치와 냉각 장치의 사시도,1 is a perspective view of a charging and discharging device and a cooling device according to an embodiment of the present invention;
도 2a 및 도 2b는 도 1의 평면도 및 정면도,2A and 2B are a plan view and a front view of FIG. 1,
도 3은 본 발명의 실험과 관련한 온도센서를 배치한 위치를 설명하기 위한 사시도,3 is a perspective view for explaining a position where a temperature sensor is disposed in connection with an experiment of the present invention;
도 4a 및 도 4b는 본 발명과 대비되는 종래기술을 설명하기 위한 개략도,4a and 4b is a schematic view for explaining the prior art compared with the present invention,
도 5a는 본 발명의 냉각부에 의한 충방전 장치의 온도변화를 나타낸 그래프이고, 도 5b는 비교예인 종래기술의 냉각부에 의한 충방전 장치의 온도변화를 나타낸 그래프,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,
도 6a 및 도 6b는 본 발명에 따른 냉각 장치에서 발생되는 바람의 흐름을 설명하기 위한 개략도 및 다른 실시예에 따른 냉각 장치의 바람의 흐름을 설명하기 위한 개략도이다.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.
[부호의 설명][Description of the code]
100 : 충방전 장치 10 : 배터리100: charge and discharge device 10: battery
110, 110a, 110b : 배터리세트 120 : 베이스110, 110a, 110b: Battery set 120: Base
130 : 충방전작동부 170 : 냉각부130: charge and discharge operation unit 170: cooling unit
180 : 온도센서180: temperature sensor
본 발명의 이점 및 특징, 그리고 그것들을 달성하는 방법은 첨부되는 도면과 함께 상세하게 후술되어 있는 실시예들을 참조하면 명확해질 것이다. 그러나 본 발명은 이하에서 개시되는 실시예들에 한정되는 것이 아니라 서로 다른 다양한 형태로 구현될 것이며, 단지 본 실시예들은 본 발명의 개시가 완전하도록 하며, 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자에게 발명의 범주를 완전하게 알려주기 위해 제공되는 것이며, 본 발명은 청구항의 범주에 의해 정의될 뿐이다.Advantages and features of the present invention and methods for achieving them will be apparent with reference to the embodiments described below in detail with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but will be implemented in various forms, and only the present embodiments are intended to complete the disclosure of the present invention, and the general knowledge in the art to which the present invention pertains. It is provided to fully convey the scope of the invention to those skilled in the art, and the present invention is defined only by the scope of the claims.
아래 첨부된 도면을 참조하여 본 발명의 실시를 위한 구체적인 내용을 상세히 설명한다. 도면에 관계없이 동일한 부재번호는 동일한 구성요소를 지칭하며, "및/또는"은 언급된 아이템들의 각각 및 하나 이상의 모든 조합을 포함한다.DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. Regardless of the drawings, the same reference numbers refer to the same components, and “and / or” includes each and every combination of one or more of the items mentioned.
본 명세서에서 사용된 용어는 실시예들을 설명하기 위한 것이며 본 발명을 제한하고자 하는 것은 아니다. 본 명세서에서, 단수형은 문구에서 특별히 언급하지 않는 한 복수형도 포함한다. 명세서에서 사용되는 "포함한다(comprises)" 및/또는 "포함하는(comprising)"은 언급된 구성요소 외에 하나 이상의 다른 구성요소의 존재 또는 추가를 배제하지 않는다.The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. In this specification, the singular also includes the plural unless specifically stated otherwise in the phrase. As used herein, "comprises" and / or "comprising" does not exclude the presence or addition of one or more other components in addition to the mentioned components.
다른 정의가 없다면, 본 명세서에서 사용되는 모든 용어(기술 및 과학적 용어를 포함)는 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자에게 공통적으로 이해될 수 있는 의미로 사용될 수 있을 것이다. 또 일반적으로 사용되는 사전에 정의되어 있는 용어들은 명백하게 특별히 정의되어 있지 않는 한 이상적으로 또는 과도하게 해석되지 않는다.Unless otherwise defined, all terms (including technical and scientific terms) used in the present specification may be used in a sense that can be commonly understood by those skilled in the art. In addition, the terms defined in the commonly used dictionaries are not ideally or excessively interpreted unless they are specifically defined clearly.
배터리세트는 다수의 배터리가 양극판과 음극판으로 조합되어 한 세트를 이루는 예를 들면 전기자동차의 배터리 셀을 포함할 수 있고 필요에 따라 이러한 배터리 셀을 다수 포함할 수도 있다.The battery set may include a battery cell of, for example, an electric vehicle in which a plurality of batteries are combined into a positive electrode plate and a negative electrode plate, and may include a plurality of such battery cells as necessary.
이하, 첨부된 도면을 참조하여 본 발명의 일실시예에 따른 배터리 충방전 장치용 냉각장치(이하에서 '냉각장치'라 함)에 대하여 도 1 내지 도 6b를 참조하여 구체적으로 설명하면 다음과 같다.Hereinafter, a cooling device (hereinafter, referred to as 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. .
도 1은 본 발명의 일실시예에 따른 충방전 장치와 냉각 장치의 사시도이고, 도 2a 및 도 2b는 도 1의 평면도 및 정면도이며, 도 3은 본 발명의 실험과 관련한 온도센서를 배치한 위치를 설명하기 위한 사시도이고, 도 4a 및 도 4b는 본 발명과 대비되는 종래기술을 설명하기 위한 개략도이며, 도 5a는 본 발명의 냉각부에 의한 충방전 장치의 온도변화를 나타낸 그래프이고, 도 5b는 비교예인 종래기술의 냉각부에 의한 충방전 장치의 온도변화를 나타낸 그래프이며, 도 6a 및 도 6b는 본 발명에 따른 냉각 장치에서 발생되는 바람의 흐름을 설명하기 위한 개략도 및 다른 실시예에 따른 냉각 장치의 바람의 흐름을 설명하기 위한 개략도이다.1 is a perspective view of a charging and discharging device and a cooling device according to an embodiment of the present invention, Figures 2a and 2b is a plan view and a front view of Figure 1, Figure 3 is a position where the temperature sensor according to the experiment of the present invention is disposed 4A and 4B are schematic views for explaining the prior art compared with the present invention, and FIG. 5A is a graph showing a temperature change of the charge / discharge device by the cooling unit of the present invention, and FIG. 5B. Is a graph showing the temperature change of the charging and discharging device by the cooling unit of the prior art as a comparative example, Figures 6a and 6b is a schematic diagram for explaining the flow of wind generated in the cooling device according to the present invention and according to another embodiment It is a schematic diagram for demonstrating the wind flow of a cooling apparatus.
이하에서 설명의 편의상 도 1을 기준으로 판 상의 배터리(10) 다수가 평행으로 배치되는 좌우 방향을 'X'축선 방향으로, 배터리)를 수용한 배터리세트(110a, 110b)가 적재된 상하 방향을 'Y'축선 방향, X-Y 평면에 대하여 수직 방향인 전후 방향을 'Z' 축선 방향으로 각각 정의한다. For convenience of description, in the left and right directions in which a plurality of batteries 10 on a plate are arranged in parallel with respect to FIG. 1, 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.
그리고, 이하에서 참조번호의 부여시 특별하게 구성을 구분하지 않는 경우 대표적인 또는 포괄적인 참조번호를 사용할 수 있다. 예를 들면, 배터리세트를 특별하게 구분하지 않는 경우 참조번호 '110' 또는 '110a, 110b'를 사용할 수 있고, 각 배터리세트를 구분할 필요가 있을 경우 상단 배터리세트는 '110a' 하단 배터리세트는 '110b'로 표시한다.In the following, when a reference number is assigned, a representative or comprehensive reference number may be used unless a special configuration is distinguished. For example, 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 '.
충방전 장치(100)는, 도 1에 도시된 바와 같이, 다수의 2차전지를 포함하는 배터리(10)를 나란하게 수용하는 배터리세트(110a, 110b)를 지지하는 베이스(120)와; 상기 베이스(120)에 지지되어 상기 각 배터리(10)의 양극 단자(미도시) 및 음극 단자(미도시)와 전기적으로 접촉 및 접촉 해제 가능하게 상기 베이스(120) 및 상기 배터리세트(110a, 110b)에 대하여 이동 가능하게 상기 베이스(120)에 결합된 충방전작동부(130)와; 상기 베이스(120) 또는 충방전작동부(130)에 결합되어 상기 배터리(10)가 반복적으로 충방전되어 활성화되는 과정에서 상기 배터리(10)에서 발생하는 열을 방출 가능하게 마련된 냉각부(170);를 구비하고, 상기 냉각부(170)는 상기 배터리세트(110a, 110b)에 수용된 판 형상의 배터리와 나란한 방향으로 공기를 유도 가능하게 상기 배터리세트(110a, 110b)의 좌우측에 대향되게 상기 충방전 장치(100)의 베이스(120)에 결합된 것이 바람직하다.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 charge / discharge operation unit 130 coupled to the base 120 so as to be movable relative to the base 120; A cooling unit 170 coupled to the base 120 or the charge / discharge operation unit 130 to release heat generated from the battery 10 during the process of repeatedly charging and discharging the battery 10 to be activated; The cooling unit 170 is charged and discharged to face the left and right sides of the battery set (110a, 110b) to induce air in a direction parallel to the plate-shaped battery accommodated in the battery set (110a, 110b) It is preferably coupled to the base 120 of the device 100.
충방전 장치(100)에서는 다수의 배터리(10)가 제조 공정을 마친 후 배터리(10) 내부를 활성화하기 위하여 충전과 방전을 설정된 시간과 설정된 전압, 전류를 충방전 장치(100)의 제어부(미도시)의 제어에 따라 수행하고 충방전 상태를 모니터링하여 배터리(10)의 활성화 작업이 이루어진다.In the charge / discharge device 100, after a plurality of batteries 10 have completed a manufacturing process, 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.
여기서, 배터리(10)는 다양한 종류가 포함될 수 있지만 이하에서 설명의 편의상 전기자동차에 소요되는 배터리 패키지에 들어가는 배터리(10) 내지 배터리셀을 이루는 하나의 배터리를 예로 들어 설명한다. 배터리(10)의 충방전 전후의 제조/생산 과정과 구조 등에 대하여는 본 발명의 특징적인 부분과 크게 관련이 없으므로 이하에서 구체적인 설명을 생략한다.Herein, 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.
충방전 장치(100)에서 배터리세트(110)가 여러 단으로 구비될 수 있으나 이하에서 설명의 편의상 배터리세트(110)가 두 개로 된 상단 배터리세트(110a)와 하단 배터리세트(110b)에 예를 들면 배터리(10)가 각각 36개의 판 형상으로 동일한 간격으로 떨어져 배치되는 것에 대하여 설명한다. 이러한 배터리는 외부와 전기적으로 연결될 수 있도록 돌출된 양극 및 음극 단자(미도시)를 갖는다.In the charge / discharge device 100, 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. For example, 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.
이러한 상단 및 하단 배터리세트(110a, 110b)가 상하로 결합된 채로 로봇 등의 이동수단에 의하여 충방전 장치(100)의 베이스(120)에 안착하여 지지 내지 고정되고 충방전이 완료되었다는 신호가 제어부에서 전달되면 로봇이 충방전이 완료된 배터리세트(110a, 110b)를 베이스(120)로부터 분리하고 새롭게 충방전을 할 배터리세트(110a, 110b)를 베이스(120)에 안착시킬 수 있다.While the upper and lower battery sets 110a and 110b are coupled up and down, 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.
여기서, 배터리세트(110a, 110b)는 2단으로 적재된 예에 대하여 설명하였으나, 3단 등으로도 적재될 수 있고 더 많은 배터리(10)를 수용할 수도 있음은 물론이다.Here, although 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.
또한, 이러한 충방전 장치(100)는 일정한 공간에 직렬 및/또는 병렬로 복수로 배치되어 로봇 등을 통해 연속적으로 작업이 이루어질 수 있다.In addition, 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.
베이스(120)는 배터리세트(110a, 110b)를 지지하며, 베이스(120) 상측에는 충방전작동부(130)가 결합되어 있다. 충방전작동부(130)는 배터리세트(110)가 정위치에 안착되면 이를 감지하여 배터리세트(110)측으로 이동하여 배터리(10)에 전원을 공급하도록 결합하여 배터리(10)를 설정된 충방전 시간, 전압, 횟수 등의 충방전 상태를 모니터링하고 작업을 완료한 후 원위치로 이동하는 등의 각종 작업을 수행하고 제어할 수 있는 미도시된 제어부에 의해 작동될 수도 있고 부분적으로 수동으로 작업이 이루어질 수 있으나 이는 본 발명의 특징적인 것과 관련이 없으므로 이하에서 구체적인 설명을 생략한다.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.
냉각 장치(미도시)는, 배터리세트(110a, 110b)에 수용된 배터리(10)와 나란한 방향으로 공기를 유도 가능하게 상기 배터리세트(110)의 좌우측 방향인 X 축선 방향에 배치되어 있으며, 충방전 장치의 지지부(120)에 결합된 팬을 포함하는 냉각부(170)를 포함하는 것이 바람직하다. 냉각 장치는 냉각부(170)에서 배출되는 공기의 흐름의 방향을 조절할 수 있도록 지지부(120) 또는 충방전작동부(130)에 틸팅 가능하게 결합되는 것이 바람직하고 틸팅 가능하게 지지되는 구조는 예를 들면 일정한 각도로 냉각부(170)의 팬을 경사지게 조절할 수 있는 슬롯 내지 그루브를 따라 이동하고 팬을 고정시킬 수 있는 볼트 및 너트를 포함할 수 있다. 그리고, 이러한 냉각부(170)의 공기의 방향 조절은 수동 또는 자동으로 할 수 있음은 물론이다. 또한, 냉각부(170)는 일실시예로 충방전작동부(130)에 지지된 것으로 도시하였으나 필요에 따라 충방전작동부(130)와 별도로 베이스(110)에 지지될 수도 있다.The cooling device (not shown) is disposed in the X-axis direction in the left and right directions of the battery set 110 to induce air in a direction parallel to the battery 10 accommodated in the battery sets 110a and 110b. It is preferable to include a cooling unit 170 including a fan coupled to the support 120 of the device. The cooling device is preferably tiltably coupled to the support 120 or the charge / discharge operation unit 130 so as to adjust the direction of the flow of air discharged from the cooling unit 170, the tiltable structure is for example The fan of the cooling unit 170 may be included at a predetermined angle to move along the slot to the groove which can be inclined to be inclined and to fix the fan. And, of course, the direction of the air of the cooling unit 170 can be manually or automatically. In addition, although the cooling unit 170 is illustrated as being supported by the charge / discharge operation unit 130 in one embodiment, it may be supported by the base 110 separately from the charge / discharge operation unit 130 as necessary.
충방전 장치(100)에서, 배터리(10)가 충방전 되는 동안 배터리(10)의 온도가 예를 들면, 50도 이상으로 되면 배터리(10)의 효율 내지 성능이 저하되고, 내구성이 감소될 뿐만 아니라 열에 대한 리스크(예를 들면, 부분 소손, 폭발 등)가 증가될 수 있다. 이에 배터리(10)의 충방전 과정에서 발생하는 열을 방출하여 배터리(10)의 온도를 본 발명에 따른 냉각장치로 저하시키는 것이 바람직하다. 또한, 이러한 배터리(10)의 충방전 과정에서 열을 방출하는 과정에서 동일한 배터리세트(110) 내의 배터리(10)가 균일 내지 동일하게 열이 방출되고 온도 편차를 최대한 감소시키는 것이 바람직하고 온도 편차가 많은 경우 배터리의 효율, 안정성, 내구성에 영향을 받을 수 있기 때문이다.In the charge / discharge device 100, when the temperature of the battery 10 becomes 50 degrees or more, for example, while the battery 10 is being charged or discharged, the efficiency or performance of the battery 10 is lowered, and durability is not only reduced. However, the risk of heat (eg partial burnout, explosions, etc.) can be increased. Therefore, it is preferable to reduce the temperature of the battery 10 to the cooling apparatus according to the present invention by releasing heat generated during the charging and discharging process of the battery 10. In addition, in the process of dissipating heat during the charging and discharging of the battery 10, it is preferable that 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.
냉각부(170)에서 모터(미도시)를 제외한 바람이 배출되는 영역의 길이(도 2b의 'W fan' 참조, 'Z' 축선 방향)는 배터리세트(110a, 110b)에 지지된 배터리(10)가 중첩된 길이인 상기 배터리세트(110a, 110b)의 폭(도 2b의 'W trya' 참조, 'Z' 축선 방향)과 동일하거나 더 큰 것이 바람직하다. The length of the region in which the air is discharged except for the motor (not shown) in the cooling unit 170 (refer to the 'W fan' in FIG. 2B and the 'Z' axis direction) is the battery 10 supported by the battery sets 110a and 110b. ) Is equal to or larger than the width (see 'W trya' in FIG. 2B, 'Z' axis direction) of the battery sets 110a and 110b which are overlapping lengths.
또한, 냉각부(170)는 바람이 배출되는 영역이 길게 일체로 마련된 크로스 플로우(cross flow) 타입의 팬을 포함하여 길이 전체를 통해 동일한 방향과 일정한 량의 풍량을 배출할 수 있는 것이 바람직하다. In addition, 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.
이러한 냉각부(170)의 구조에 의하여 배출되는 바람이 일정한 간격으로 배치된 판 형상의 배터리(10) 사이 사이마다 이동하여 와류를 발생시키지 않고 일정하고 균일한 흐름을 유지할 수 있다. 즉, 후술하는 종래기술의 도 4a 및 도 4b에 도시된 바와 같이 다수의 소형 냉각팬보다 본 발명에 따른 하나의 냉각부(170)로 구비되는 것이 바람직하다. 그리고, 냉각부(170)의 고장 여부는 후술하는 온도센서(180)의 급격한 변화 등으로 제어부에서 자동으로 판단(예를 들면, 타측보다 어느 한 측의 온도센서(180)가 3도 이상 차이나는 경우)하고 경고를 발생시키도록 제어할 수 있다.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).
그리고, 온도센서(180)는 도 3에 도시된 바와 같이 배터리(10)와 최대한 가까운 충방전작동부(130)의 상측에 결합되어 배터리(10)의 내지 배터리(10) 인접한 영역의 온도를 감지할 수 있다.Then, 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.
본 발명에 따른 냉각장치의 효과를 알아보기 위하여 다음과 같은 실험을 하였으며 이를 도 3 내지 도 5b 참조하여 설명하면 다음과 같다.In order to determine the effect of the cooling apparatus according to the present invention, the following experiments were made and described with reference to FIGS. 3 to 5b.
먼저, 시험은 도 1 내지 도 2b의 본 발명에 따른 예와 도 4a 및 도 4b의 종래기술을 비교예로 하여 도 3과 같이 온도센서(180)를 각각 설치하여 본 발명과 비교예를 비교하였다.First, the test was compared with the present invention and the comparative example by installing the temperature sensor 180 as shown in Fig. 3 using the example according to the present invention of Figures 1 to 2b and the prior art of Figures 4a and 4b as a comparative example. .
비교예의 시험에 따른 충방전 장치(200)용 냉각부(270)는, 도 4a 및 도 4b에 도시된 바와 같이, 통상의 축류팬으로 상측에 8개의 팬(270a)과, 좌측 5개 우측 5개를 배치된 좌우측팬(270b)를 화살표와 같이 공기가 흐르도록 충방전작동부(130)에 배치하였다. 즉, 비교예에서는 냉각부(270a, 270b)를 상측 8개, 좌우측 각 5개씩으로 총 18개를 사용하였다.As shown in FIGS. 4A and 4B, the cooling unit 270 for the charging / discharging device 200 according to the test of the comparative example has eight fans 270a on the upper side and five left to the right five on a normal axial flow fan. The left and right fans 270b having dogs are arranged in the charge / discharge operation unit 130 so that air flows as shown by the arrow. That is, in the comparative example, a total of 18 cooling units 270a and 270b were used, each of eight on the upper side and five on the left and right sides.
그리고, 본 발명에 따른 충방전 장치(100)에서는, 도 1 내지 도 3과 같이, 상단 및 하단 배터리세트(110a, 110b)의 좌우측에 대향되도록 4개의 크로스 플로우(cross flow) 팬으로 이루어진 냉각부(170)가 충방전작동부(130)에 배치되어 있다. 즉, 본 발명에서 냉각부(170)인 길이방향으로 긴 형태의 크로스 플로우팬을 배터리세트(110a, 110b)의 좌우측에 각각 총 4개를 사용하였다. In the charging and discharging device 100 according to the present invention, as illustrated in FIGS. 1 to 3, a cooling unit including four cross flow fans to face left and right sides of the upper and lower battery sets 110a and 110b. 170 is disposed in the charge and discharge operation unit 130. That is, in the present invention, a total of four cross flow fans having a longitudinal shape that is the cooling unit 170 are used on the left and right sides of the battery sets 110a and 110b, respectively.
또한, 도면에 미도시하였지만 냉각부(170)에서 보다 효율적으로 냉각부(170)의 공기 흐름을 배터리(170)측으로 균일하고 안정적인 유도하기 위하여 공기가 흐르는 방향과 평행하게 일정한 간격(예를 들면, X 축선 방향으로 냉각부의 전체 길이를 3등분하여 배치)으로 얇은 판 형상의 배플이 배치되는 것도 바람직하다. 특히 냉각부(170)의 전체 길이(W fan)의 끝부분에서 냉각부(170)에서 배출되는 공기가 외부 공기의 영향으로 발생하는 와류형상을 최소화시킬 수 있어 배플은 효과적이다.In addition, although not shown in the drawings, in order to guide the air flow of the cooling unit 170 to the battery 170 more uniformly and stably in the cooling unit 170 at a constant interval in parallel with the air flow direction (for example, It is also preferable that a thin plate-shaped baffle is arranged in the X-axis direction by dividing the entire length of the cooling section into three sections. In particular, the baffle is effective because the air discharged from the cooling unit 170 at the end of the entire length (W fan) of the cooling unit 170 can minimize the eddy current generated by the influence of the outside air.
그리고, 각 냉각부(170, 270a, 270b)에 사용된 팬의 사양을 비교하면 다음과같다.Then, the specifications of the fans used in the cooling units 170, 270a, and 270b are compared as follows.
구분division 풍량Air flow PowerPower 전류electric current
비교 예(축류팬)Comparative Example (Axial Flow Fan) 144 ㎤/min*18 = 2,592㎤/min144 cm 3 / min * 18 = 2,592 cm 3 / min 9.5w*18=171watt9.5w * 18 = 171watt 0.18 A0.18 A
본 발명 (cross flow)Cross flow 350㎤/min*4 = 2,800㎤/min350 cm 3 / min * 4 = 2,800 cm 3 / min 35*4=140watt35 * 4 = 140watt 0.16 A0.16 A
이렇게 동일한 배터리세트(110a, 110b) 및 충방전작동부(130)와 상이한 냉각부를 이용하여 두 경우 모두 동일하게 동일한 충전 전압과 전류로 충방전을 계속 반복하면서 도 3에서와 같이 설치된 온도센서(180)를 이용하여 시간별로 온도를 측정하였다.In this case, using the same battery set 110a and 110b and the charging / discharging operation unit 130 and a different cooling unit, 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.
온도센서(180)를 통해 측정한 온도변화를 그래프로 본 발명에 따른 냉각부(170)에 의하여 냉각되는 충방전 장치(100)의 온도변화 그래프는 도 5a에 나타나 있고, 도 6b는 비교예에 따른 냉각부(270a, 270b)에 의하여 냉각되는 충방전 장치(100)의 온도변화 그래프이다.The temperature change graph of the charge / discharge device 100 cooled by the cooling unit 170 according to the present invention as a graph of the temperature change measured by the temperature sensor 180 is shown in Figure 5a, Figure 6b is a comparative example It is a temperature change graph of the charge and discharge device 100 is cooled by the cooling unit (270a, 270b) according to.
이들 그래프에서 '공조온도'는 시험실 내의 온도이고, '상단 셀온도'는 상단 배터리세트(110a, 110b) 근처의 온도이고, '상단 주변온도'는 상단 팬의 덕트 상부온도와 상단 충방전작동부 하부온도(온도센서 미도시)의 평균 온도를 각각 의미하고, 마찬가지로, '하단 셀온도'는 하단 배터리세트(110a, 110b) 근처의 온도이고, '하단 주변온도'는 하단 팬의 덕트 상부온도와 하단 충방전작동부(온도센서 미도시) 하부온도의 평균 온도를 각각 의미한다.In these graphs, 'air conditioning temperature' is the temperature in the laboratory, 'top cell temperature' is the temperature near the top battery sets 110a and 110b, and 'top ambient temperature' is the upper duct temperature of the upper fan and the lower part of the upper charging / discharging operation part. Mean temperature of the temperature (temperature sensor not shown), respectively, similarly, 'lower cell temperature' is the temperature near the lower battery set (110a, 110b), 'lower ambient temperature' is the upper and lower duct temperature of the lower fan It means the average temperature of the lower temperature of the charge / discharge operation part (temperature sensor not shown).
이러한 내용을 표로 정리하면 <표 2> 내지 <표 4>와 같으며, <표 2>는 비교예에 따른 냉각부를 적용하여 일정한 기간 충방전을 하면서 측정한 온도에 대한 데이터이며, <표 3> 및 <표 4>는 본 발명에 따른 냉각부를 적용하여 일정한 기간 충방전을 하면서 측정한 온도 데이터이다.Tables of these contents are shown in <Table 2> to <Table 4>, and <Table 2> is data on temperature measured while charging and discharging for a certain period by applying a cooling unit according to a comparative example. And Table 4 is the temperature data measured while charging and discharging for a certain period by applying the cooling unit according to the present invention.
즉, 이러한 <표 2> 내지 <표 4>로부터 본 발명에 따른 경우를 비교예와 비교하면 상단 배터리세트에서의 온도 차이와 하단 배터리세트에서의 온도 차이가 훨씬 적음을 알 수 있다.That is, when comparing the case according to the present invention from the Table 2 to Table 4 it can be seen that the temperature difference in the upper battery set and the temperature difference in the lower battery set is much less.
이러한 결과에 비추어 보면 본 발명에 따른 경우 비교예와 비교하면 충방전 과정에서 상단과 하단 배터리세트에 수용된 각 배터리간의 온도 차이가 크지 않아 충방전 장치에서 활성화되는 과정에서도 배터리 내부의 활성화의 효율도 증가하고 활성화율도 균일하게 이루어질 수 있으며, 추후 제품으로 장시간 사용시에도 내구성이 향상될 수 있고 비교예와 비교하여도 구조가 간단함을 알 수 있다.In view of these results, 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. And 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.
Figure PCTKR2017014898-appb-T000001
Figure PCTKR2017014898-appb-T000001
Figure PCTKR2017014898-appb-T000002
Figure PCTKR2017014898-appb-T000002
Figure PCTKR2017014898-appb-T000003
Figure PCTKR2017014898-appb-T000003
즉, 종래기술인 비교예에서는 냉각부(270)가 여러 개로 나누어져 있어 배터리로 공급되는 풍량이 각 배터리 사이로 균일하게 유도되지 않을 뿐만 아니라 축류팬의 특징상 와류가 발생되고 각 팬 사이에서 상호 공기 흐름의 간섭이 발생하여 공기의 흐름이 각 배터리 사이로 균일하지 않았음에 기초한 결과로 파악되었다.That is, in the comparative example of the related art, 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.
이러한 현상은 배터리셀(110) 사이의 배터리 간격이 좁으므로 각 배터리 사이에서 와류가 발생하는 경우 배터리의 냉각 효과가 떨어짐을 예측할 수 있었다.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.
또한, 본 발명에 따른 냉각 장치는, 도 6a와 같은 냉각부(170)를 구비하여 배터리셀(110)의 상부에 배터리의 이격된 사이를 향하여 양측에서 비스듬하게 바람을 제공하여 배터리를 냉각시키는 형태이다.In addition, the cooling apparatus according to the present invention is provided with a cooling unit 170 as shown in Figure 6a to provide a wind on both sides toward the spaced apart between the battery on the top of the battery cell 110 to cool the battery to be.
그러나, 도 6b와 같이 본 발명의 또 다른 형태(300)에서는 냉각부(370)가 배터리셀(110)의 X-Y 평면상의 각 모서리부를 비스듬하게 바람이 제공될 수 있도록 배치되는 형태가 도시되어 있다. 이러한 다양한 형태로 냉각부의 위치를 본 발명의 기술적 사상을 변형하지 않는 범위 내에서 변경할 수 있다.However, in another embodiment 300 of the present invention, as shown in FIG. 6B, the cooling unit 370 is illustrated in such a manner that the air is obliquely provided at each corner of the X-Y plane of the battery cell 110. In such various forms, the location of the cooling unit may be changed within a range that does not modify the technical idea of the present invention.
또한, 도시하지 않았지만, 도 6b에서 X축선 상의 좌측 두 개의 냉각부(370)가 우측으로 비스듬하게 바람을 각 배터리 사이로 나란하게 공급하고 우측의 두 개의 냉각부(370)는 우측으로 비스듬하게 바람을 배출하는 형태로 배치될 수도 있음은 물론이다.In addition, although not shown, in FIG. 6B, 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. Of course, it can also be arranged in the form of discharge.
이에, 본 발명에 따르면, 다수의 배터리를 수용하는 배터리세트가 존재하는 경우 배터리세트 사이에서 충방전 되면서 발생하는 열을 효과적으로 균일하게 유지하면서 냉각시킬 수 있는 배터리 충방전 장치용 냉각장치를 제공할 수 있다.Therefore, according to the present invention, when there is a battery set for accommodating a plurality of batteries, it is possible to provide a cooling device for a battery charge / discharge device that can cool down while effectively maintaining uniform heat generated while charging and discharging between battery sets. have.
또한, 배터리의 효율, 내구성, 균일성 및 안정성 및 신뢰성을 향상시킬 수 있고, 구조가 간단하고 사용이 편리한 배터리 충방전 장치용 냉각장치를 제공할 수 있다.In addition, it is possible to improve the efficiency, durability, uniformity and stability and reliability of the battery, it is possible to provide a cooling device for a battery charge and discharge device having a simple structure and easy to use.
여기서, 본 발명의 여러 실시예를 도시하여 설명하였지만, 본 발명이 속하는 기술 분야의 통상의 지식을 가진 당업자라면 본 발명의 원칙이나 정신에서 벗어나지 않으면서 본 실시예를 변형할 수 있음을 알 수 있을 것이다. 발명의 범위는 첨부된 청구항과 그 균등물에 의해 정해질 것이다.Here, although various embodiments of the present invention have been illustrated and described, it will be apparent to those skilled in the art that the present invention may be modified without departing from the spirit or principles of the present invention. will be. It is intended that the scope of the invention be defined by the claims appended hereto and their equivalents.
본 발명에 따르면, 다수의 배터리를 수용하는 배터리세트가 존재하는 경우 배터리세트 사이에서 충방전되면서 발생하는 열을 효과적으로 균일하게 유지하면서 냉각시킬 수 있는 배터리 충방전 장치용 냉각장치를 제공할 수 있다.According to the present invention, when there is a battery set for accommodating a plurality of batteries, it is possible to provide a cooling device for a battery charging / discharging device that can cool down while effectively maintaining uniform heat generated while charging and discharging between battery sets.
또한, 배터리의 효율, 내구성, 균일성 및 안정성 및 신뢰성을 향상시킬 수 있고, 구조가 간단하고 사용이 편리한 배터리 충방전 장치용 냉각장치를 제공할 수 있다.In addition, it is possible to improve the efficiency, durability, uniformity and stability and reliability of the battery, it is possible to provide a cooling device for a battery charge and discharge device having a simple structure and easy to use.

Claims (4)

  1. 다수의 2차전지를 포함하는 배터리를 나란하게 수용하는 배터리세트를 지지하는 베이스와 상기 배터리세트에 수용된 배터리에서 돌출된 양극과 음극에 전기적으로 접촉 가능하게 마련된 충방전작동부를 갖는 충방전 장치에 결합되어, 상기 배터리가 반복적으로 충방전되어 활성화되는 과정에서 상기 배터리에서 발생하는 열을 방출 가능하게 마련된 냉각부;를 구비하고,It is coupled to a charge and discharge device having a base for supporting a battery set including a plurality of secondary cells side by side and a charge and discharge operation unit provided in electrical contact with the positive and negative electrodes protruding from the battery accommodated in the battery set And a cooling unit configured to release heat generated from the battery while the battery is repeatedly charged and discharged and activated.
    상기 냉각부는 상기 배터리세트에 수용된 판 형상의 이격된 배터리 사이로 나란한 방향으로 균일하게 공기를 유도 가능하게 상기 베이스 또는 충방전작동부에 지지된 것을 특징으로 하는 배터리 충방전 장치용 냉각 장치.And the cooling unit is supported by the base or the charge / discharge operation unit to induce air uniformly in a side-by-side direction between the plate-shaped spaced batteries accommodated in the battery set.
  2. 제1항에 있어서,The method of claim 1,
    상기 냉각부는 상기 배터리세트에 지지된 배터리가 중첩된 길이인 상기 배터리세트의 폭에 대응하여 길게 일체로 구비된 것을 특징으로 하는 충방전 장치용 냉각 장치.And the cooling unit is integrally provided with a length corresponding to the width of the battery set, the length of which the battery supported by the battery set is overlapped.
  3. 제1항 또는 제2항에 있어서,The method according to claim 1 or 2,
    상기 냉각부는 크로스 플로우(cross flow) 타입의 팬을 포함하는 것을 특징으로 하는 배터리 충방전 장치용 냉각 장치.The cooling unit cooling device for a battery charge and discharge device, characterized in that the cross flow (cross flow) type fan.
  4. 제3항에 있어서,The method of claim 3,
    상기 냉각부는 상기 베이스 또는 상기 충방전작동부에 지지되어 상기 배터리세트에 수용된 배터리가 지지된 위치와 대응한 위치에 틸팅 가능하게 결합되어 공기 흐름의 방향을 조절할 수 있는 것을 특징으로 하는 배터리 충방전 장치용 냉각 장치.The cooling unit is supported by the base or the charging and discharging operation unit for the battery charge and discharge device, characterized in that the battery accommodated in the battery set can be tilted to a position corresponding to the supported position to adjust the direction of air flow Cooling system.
PCT/KR2017/014898 2016-12-19 2017-12-15 Battery charging/discharging device cooling apparatus WO2018117553A1 (en)

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CN112119525A (en) * 2019-01-10 2020-12-22 株式会社Lg化学 Secondary battery and method for manufacturing same

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KR102369355B1 (en) * 2018-12-21 2022-02-28 주식회사 엘지에너지솔루션 Charge/discharge apparatus comprising movable temperature measurement device for secondary battery and cooling fan
KR20220108972A (en) 2021-01-28 2022-08-04 주식회사 엘지에너지솔루션 Battery charging and discharging system including insulation pad and temperature control method of battery charging and discharging using the same
WO2023090926A1 (en) * 2021-11-19 2023-05-25 주식회사 엘지에너지솔루션 Battery cell charging and discharging device comprising lower cooling fans

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CN112119525A (en) * 2019-01-10 2020-12-22 株式会社Lg化学 Secondary battery and method for manufacturing same

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