KR102074321B1 - Cooling apparatus for Battery module and Power storage apparatus including the same - Google Patents

Cooling apparatus for Battery module and Power storage apparatus including the same Download PDF

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Publication number
KR102074321B1
KR102074321B1 KR1020150113327A KR20150113327A KR102074321B1 KR 102074321 B1 KR102074321 B1 KR 102074321B1 KR 1020150113327 A KR1020150113327 A KR 1020150113327A KR 20150113327 A KR20150113327 A KR 20150113327A KR 102074321 B1 KR102074321 B1 KR 102074321B1
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KR
South Korea
Prior art keywords
duct
battery module
unit
air
cooling
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Application number
KR1020150113327A
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Korean (ko)
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KR20170019212A (en
Inventor
공병오
안종규
박현철
배경현
Original Assignee
주식회사 엘지화학
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Priority to KR1020150113327A priority Critical patent/KR102074321B1/en
Publication of KR20170019212A publication Critical patent/KR20170019212A/en
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Publication of KR102074321B1 publication Critical patent/KR102074321B1/en

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    • HELECTRICITY
    • H01BASIC ELECTRIC 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
    • H01M10/655Solid structures for heat exchange or heat conduction
    • H01M10/6556Solid parts with flow channel passages or pipes for heat exchange
    • HELECTRICITY
    • H01BASIC ELECTRIC 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
    • H01BASIC ELECTRIC 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
    • H01M10/627Stationary installations, e.g. power plant buffering or backup power supplies
    • HELECTRICITY
    • H01BASIC ELECTRIC 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
    • H01M10/6561Gases
    • H01M10/6563Gases with forced flow, e.g. by blowers
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2/00Constructional details or processes of manufacture of the non-active parts
    • H01M2/10Mountings; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M2/1016Cabinets, cases, fixing devices, adapters, racks or battery packs
    • H01M2/1072Cabinets, cases, fixing devices, adapters, racks or battery packs for starting, lighting or ignition batteries; Vehicle traction batteries; Stationary or load leading batteries
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2220/00Batteries for particular applications
    • H01M2220/10Batteries in stationary systems, e.g. emergency power source in plant
    • 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
    • Y02E60/12

Abstract

According to an aspect of the present invention, there is provided a battery module cooling apparatus including: a duct unit having a plurality of air inlets arranged in multiple stages and one air outlet communicating with the plurality of air inlets; And a fan unit mounted to the duct unit to discharge air to the outside, wherein the plurality of air inlets are provided on each of the battery modules in close contact with one side of the at least two battery modules stacked in multiple stages. It may be in communication with the vent holes.

Description

Cooling apparatus for battery module and power storage device including the same

The present invention relates to a cooling device for a battery module and a power storage device including the same, and more particularly, a cooling device for a battery module capable of forcibly cooling a plurality of battery modules in a stack form with one fan, and including the same. Relates to a power storage device.

Recently, the issue of depletion of energy resources by fossil fuels, the issue of environmental pollution, the economic feasibility of the use of energy, etc. have been highlighted, effectively overcoming inconsistencies between power consumption and power production, In order to solve the overload phenomenon caused by waste and lack of power supply, the concept of smart grid system that adjusts power supply flexibly in connection with various information communication infrastructures is being actively researched.

That is, in the smart grid system, when the power consumption is low, the power is stored, and when the power consumption is high, the infrastructure has such an electric power supply to the consumer along with the generated power.

A medium for storing power produced in such a smart grid system should be utilized. In this case, the battery module functions as a main element for storing power.

In addition, the secondary battery or the battery module for power storage may be used in many other fields as well as smart grid system. For example, since a large amount of power needs to be stored in an electric vehicle charging station that supplies charging power to an electric vehicle, a battery module for storing power may also be used.

The battery module for power storage includes a considerable number of secondary batteries assembled into various structures (for example, a tower stack in which battery modules are stacked in a vertical structure) to form a large capacity system. The charging or discharging constantly occurs repeatedly by an electrochemical reaction, and this charging and discharging process inevitably involves heat generation. Thus, when the secondary battery becomes high in capacity, the heat generation due to the charging and discharging increases dramatically.

Such heat generation may cause inherent damage (damage) to the secondary battery causing the electrochemical reaction, which may result in deterioration of performance, and may cause a secondary problem that cannot guarantee the life of the battery, and an explosion phenomenon due to heat generation. It is known to be a fatal weakness in back safety.

Therefore, there is a need for a cooling system related to the operation of the secondary battery battery. In particular, as described above, since the battery module for power storage is implemented in the form of a substantial high capacity and a large integrated body, the need for a cooling system for solving such heat generation is greater. have.

The present invention has been made to solve the above problems, to provide a cooling device for a battery module and a power storage device including the same that can effectively eliminate the heat generation of the battery modules constituting the power storage system.

Other objects and advantages of the present invention can be understood by the following description, and will be more clearly understood by the embodiments of the present invention. Also, it will be readily appreciated that the objects and advantages of the present invention may be realized by the means and combinations thereof indicated in the claims.

According to an aspect of the present invention, there is provided a battery module cooling apparatus including: a duct unit having a plurality of air inlets arranged in multiple stages and one air outlet communicating with the plurality of air inlets; And a fan unit mounted to the duct unit to discharge air to the outside, wherein the plurality of air inlets are provided on each of the battery modules in close contact with one side of the at least two battery modules stacked in multiple stages. It may be in communication with the vent holes.

The at least two battery modules are two battery modules stacked up and down, and the duct unit includes an upper duct mounted on a battery module positioned at an upper side of the two battery modules, and a lower portion mounted on a battery module positioned at a lower portion thereof. It includes a duct, each of the upper duct and the lower duct, the rear may have the air inlet corresponding to the number of vent holes of the battery module.

The duct unit may include the one air outlet at a front side by coupling between the upper duct and the lower duct.

The battery module includes two vent holes spaced apart from each other by a predetermined interval, and the two air inlets, one on each side of the rear surface of the upper duct and the lower duct, respectively correspond to the positions of the two vent holes. In addition, the one air outlet may be provided in the front center.

The upper duct, the upper duct body having a portion of the air outlet in the front; And an upper duct side cover coupled to the upper duct main body, the upper duct side cover forming the two air inlets together with the upper duct main body at a rear thereof, wherein the lower duct includes a lower part having the remaining portion of the air outlet at the front side thereof. Duct body; And a lower duct side cover coupled to the lower duct body to form the two air inlets together with the lower duct body on a rear surface thereof.

The one air outlet may be formed by mutual coupling of the upper duct body and the lower duct body.

The duct unit may further include a fan mounting bracket at an edge of the one air outlet, and the fan unit may be fixed to the fan mounting bracket.

A rubber gasket may be interposed between the fan mounting bracket and the fan unit.

A rubber gasket may be interposed between the battery module and the plurality of air inlets.

The duct unit may be formed within a thickness of 5 to 15 centimeters.

According to another aspect of the present invention, there is provided a power storage device including a plurality of battery modules having at least one vent hole on one side and stacked in a stack structure; A rack housing accommodating the plurality of battery modules, the rack housing having a rack rear panel having a plurality of through holes formed in multiple stages along a height direction; And a duct unit having a plurality of air inlets, one air outlet for discharging air introduced into the plurality of air inlets to the outside, and a fan unit mounted to the duct unit to cover the one air outlet. And a cooling device for a battery module, wherein the cooling device for a battery module has an inner side from the outside of the rack rear panel, one through the through holes, such that the plurality of air intakes communicate with vent holes of at least two battery modules. It can be partially inserted in the direction.

The duct unit may include an upper duct mounted on one battery module among at least two stacked battery modules, and another battery module positioned below the one battery module and positioned below the upper duct. And a lower duct, wherein the upper duct and the lower duct each have at least one air intake at a rear surface thereof, and the air intake is in close contact with one side of the battery module in the rack housing to communicate with vent holes. Can be.

The through holes of the rack rear panel are formed in a shape corresponding to the rear surface of the duct unit, and the duct unit further includes a rib plate protruding along an outer circumferential direction, and the rib plate is disposed on the rack rear panel. Can be bolted.

According to an aspect of the present invention, there may be provided a cooling device for a battery module that is assembled with a plurality of stacked battery modules can be forced to air-cooled integrally with one fan unit of each battery module.

According to another aspect of the present invention, by applying EPDM (Ethylene Propylene Diene Mclass) to the contact surface with the battery module in which the vent hole is formed, it is possible to improve the battery module cooling performance because the air does not leak between the battery module and the air inlet.

According to another aspect of the present invention, by mounting the cooling device for the battery module in multiple stages on the rear side of the battery rack housing can provide a power storage device that can adjust the temperature of the battery modules very easily.

Moreover, according to the structure of the electric power storage device of this invention, maintenance work, such as replacing parts of a cooling apparatus, can also be performed very simply.

The following drawings attached to this specification are illustrative of the preferred embodiments of the present invention, and together with the detailed description of the invention to serve as a further understanding of the technical spirit of the present invention, the present invention described in such drawings It should not be construed as limited to.
1 is a perspective view of the battery module cooling apparatus according to an embodiment of the present invention mounted on two battery modules, as viewed from the front.
FIG. 2 is a front view of the duct unit of FIG. 1.
3 is a perspective view of the battery module cooling device of FIG. 1 viewed from the rear.
4 is a rear view of the battery module cooling device of FIG. 1.
5 is an exploded perspective view of a cooling module for a battery module according to an embodiment of the present invention.
6 is a view for explaining the operation of the cooling module for a battery module according to an embodiment of the present invention.
7 is a perspective view schematically illustrating a configuration of a power storage device according to an embodiment of the present invention.
FIG. 8 is a perspective view illustrating a rear surface of the battery rack rear panel of FIG. 7.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, terms or words used in the present specification and claims should not be construed as having a conventional or dictionary meaning, and the inventors should properly explain the concept of terms in order to best explain their own invention. Based on the principle that it can be defined, it should be interpreted as meaning and concept corresponding to the technical idea of the present invention.

Therefore, the embodiments described in the specification and the drawings shown in the drawings are only the most preferred embodiment of the present invention and do not represent all of the technical idea of the present invention, various modifications that can be replaced at the time of the present application It should be understood that there may be equivalents and variations.

In addition, in describing the present invention, when it is determined that the detailed description of the related well-known configuration or function may obscure the gist of the present invention, the detailed description thereof will be omitted.

Since the embodiments of the present invention are provided to more fully explain the present invention to those skilled in the art, the shapes and sizes of the components in the drawings may be exaggerated, omitted, or schematically illustrated for clarity. Thus, the size or ratio of each component does not necessarily reflect the actual size or ratio.

1 is a view showing a cooling module for a battery module according to an embodiment of the present invention mounted on a battery module, Figure 2 is a front view of the duct unit of Figure 1, Figure 3 is for the battery module of Figure 1 4 is a perspective view of the cooling device viewed from the rear, and FIG. 4 is a rear view of the battery module cooling device of FIG. 1.

Prior to the description of the drawings, the battery module 20 that is the cooling target of the cooling device 10 for the battery module 20 according to the present invention is an air-cooled battery module 20, a plurality of vent holes in the front and / or rear of the casing. (Not shown), and may have a ventilated structure through which the outside air can flow in and out through the vent holes. In particular, since the plurality of battery modules 20 are stacked in a stack structure, the battery modules 20 may be used to configure a battery pack or a power storage device.

1 to 2, the cooling device 10 (hereinafter referred to as a cooling device) for a battery module according to the present invention is integrally mounted on the rear of two battery modules 20 stacked up and down. And a fan unit 200 mounted to the duct unit 100 and the duct unit 100.

The fan unit 200 sucks air in the battery module 20 to discharge the air to the outside, or conversely, the fan unit 200 is a component that supplies external air to the battery modules 20.

The fan unit 200 may rotatably support the cooling fan 210 and the cooling fan 210 and may include a fan housing 220 provided to be mounted to the duct unit 100.

The cooling fan 210 sucks the air in the battery module 20 and discharges it out of the duct unit 100 by rotating in the forward direction, or reversely rotates the air in the opposite direction through each of the batteries through the duct unit 100. External air may be supplied to the modules 20.

The cooling fan 210 may be driven by power supplied from the battery module 20 or may be driven by a separate external power source. In addition, the cooling fan 210 may be connected to the BMS of the battery module 20 and controlled by the BMS based on temperature information of the battery module 20.

The fan housing 220 may be mounted at the front of the duct unit 100. More specifically, the fan housing 220 may be configured to be bolted to the air outlet (O) of the duct unit 100 to be described later. In particular, referring to FIGS. 1 and 2, the fan housing 220 may be manufactured in a shape and a size that is fit to the size of the air outlet O, and may include holes 221 through which bolts may be inserted into the corner region. ) May be provided.

As shown in FIGS. 2 to 4, the duct unit 100 is provided in the form of a cover or a cap that can integrally cover one surface of the at least two stacked battery modules 20, and on the rear surface thereof. A plurality of air inlets (I1, I2, I3, I4) and one air outlet (O) in front. In addition, the duct unit 100 may be mounted in a very slim shape on the back of the battery module 20 by being formed within 5 to 15 centimeters thick.

 The plurality of air inlets I1, I2, I3, and I4 may be in close contact with one surface of the battery module 20 so as not to leak air, and may communicate with vent holes (not shown), respectively.

In particular, the gasket P may be further applied to an outer circumferential edge of the air inlets I1, I2, I3, and I4, that is, a portion closely contacting one surface of the battery module 20. The gasket (P) is preferably a rubber material may be EPDM (ethylene propylene diene monomer). Here, the duct unit 100 is coupled to one end of the one end and the other end of the battery module 20, so that both the duct unit 100 and the fan unit 200 is coupled to the same end of the battery module 20. The fan unit 200 may also be coupled to one end of one end and the other end of the battery module 20.

In this way, EPDM is applied between one surface of the battery module 20 and the air inlets I1, I2, I3, and I4 so that air does not leak between the battery module 20 and the air inlets I1, I2, I3, and I4. By doing so, the air intake performance can be improved. In addition, friction and noise between the battery module 20 and the air inlets I1, I2, I3, and I4 may be alleviated due to tremor when the fan unit 200 is driven.

According to the configuration of the duct unit 100 of the present invention, the air inside each of the battery modules 20 is joined to the interior space of the duct unit 100 and then discharged to the outside, or vice versa 100 Inflow to the air outlet (O) of the) may be supplied to each of the battery modules 20 through the air inlet (I1, I2, I3, I4).

The duct unit 100 according to an embodiment of the present invention may be designed to air-cool two battery modules 20 with one fan unit 200. Of course, unlike the present embodiment, the duct unit 100 may be designed to have four or more air inlets and one air outlet to air-cool three or more battery modules 20 with one fan unit 200. It may be.

However, as the number of air inlets I1, I2, I3, and I4 is increased compared to one fan unit 200, the air suction force may be reduced to decrease cooling efficiency, as in the present embodiment. It may be desirable to configure the duct unit 100 to allow the two battery modules 20 to be air cooled. Hereinafter, the configuration of the duct unit 100 will be described in more detail.

As shown in FIGS. 1 to 4, the duct unit 100 according to the present embodiment includes one air outlet O at the front and a total of four air inlets I 1, I 2, I 3, and I 4. It is provided in the back.

A total of four air inlets I1, I2, I3, and I4 of the duct unit 100 according to the present exemplary embodiment may correspond to the number of vent holes provided on the rear surfaces of the two battery modules 20, that is, one to one vent holes. Can be configured. Of course, for example, according to the number, shape and location of the vent holes of the battery module 20, the number, shape and location of the air inlets (I1, I2, I3, I4) of the duct unit 100 is different from the present embodiment It may be designed.

In particular, the duct unit 100 according to an embodiment of the present invention may be configured to be assembled in consideration of installation expandability, convenience of maintenance and repair.

5 is an exploded perspective view of a cooling module for a battery module according to an embodiment of the present invention.

Specifically, referring to FIG. 5, the duct unit 100 may include an upper duct 110 and a lower duct 120 provided to be assembled and disassembled with each other.

As illustrated in FIG. 1, the upper duct 110 and the lower duct 120 may correspond one to one among two stacked battery modules 20. In other words, the upper duct 110 is configured such that the two air inlets I1, I2, I3, and I4 closely adhere to the rear surface of the battery module 20 at a relatively high position, and the lower duct 120 is relatively low. Two air inlets I1, I2, I3, I4 may be configured to be in close contact with the rear surface of the battery module 20 in a position.

Two stacked battery modules 20 may have some gaps between them. The duct unit 100 may be divided into the upper duct 110 and the lower duct 120, so that the two duct units 100 may be intimately and closely contacted with the two battery modules 20.

That is, since the rear surface of the upper duct 110 and the battery module 20 and the rear surface of the lower duct 120 and the battery module 20 may be closely adhered to each other, air leakage may be very small at these contact sites. Therefore, when the fan unit 200 is driven, the pressure loss is small in the duct unit 100 so that the air suction force is increased, thereby improving cooling performance.

In addition, the upper duct 110 includes an upper duct body 111 and an upper duct side cover 112, and the lower duct 120 includes a lower duct body 121 and a lower duct side cover 122. can do.

The upper duct 110 and the lower duct 120 may be provided with one air outlet O at the front side by coupling the upper duct body 111 and the lower duct body 121 to each other.

To this end, the upper duct main body 111 may have a portion having an air outlet O shape at the front side, and the lower duct main body 121 may have a remaining portion having an air outlet O shape at the front side. Hereinafter, for convenience, one portion of the air outlet O shape of the upper duct body 111 is referred to as the upper assembly portion 111a, and the remaining portion of the air outlet O shape of the lower duct body 121 is lowered. It will be defined as an assembly portion (121a).

As shown in FIG. 5, the upper assembly part 111a may be provided in a form in which the front body of the upper duct body 111 is partially opened downward based on the open end of the upper duct body 111. The lower assembly portion 121a may be provided in a form in which the front body of the lower duct body 121 is partially opened in an upward direction based on the open end of the lower duct body 121.

The upper assembly portion 111a and the lower assembly portion 121a may be a single air outlet O by combining the upper duct body 111 and the lower duct body 121 up and down so as to be shaped to each other. In this case, the air outlet O may be formed at the front center of the upper duct 110 and the lower duct 120.

A fan mounting bracket B may be further provided around the air outlet O, that is, at an edge of the upper assembly portion 111a and the lower assembly portion 121a. The fan mounting bracket B may have a rectangular frame shape when the upper assembly portion 111a and the lower assembly portion 121a are assembled to each other. And the fan mounting bracket (B) may be provided at a position spaced a predetermined distance in the inward direction from the front end of the air outlet (O). According to this, the fan unit 200 may be blocked by the fan mounting bracket B so that the depth that can be inserted into the air outlet O may be limited.

The fan mounting bracket B may further include a screw hole in the corner region. The screw hole may correspond to the through hole of the fan housing 220 when the fan unit 200 is mounted. According to this, the four bolts are inserted into the through holes of the fan housing 220 and fastened to the screw holes, whereby the fan unit 200, the upper duct main body 111, and the lower duct main body 121 can be combined into one body. .

A gasket P may be further interposed between the fan unit 200 and the fan mounting bracket B. The gasket P may be ethylene propylene diene monomer (EPDM). As such, by applying the gasket P, vibration resistance and airtightness may be improved during air discharge.

In addition, each of the upper duct main body 111 and the lower duct main body 121 may further include a space part 140. The space part 140 serves as a plate-like body disposed in a space between the upper duct 110 and the lower duct 120 to support the upper duct 110 and the lower duct 120 to be spaced apart from each other. The space unit 140 may be appropriately sized according to the gap between the two stacked battery modules 20.

The upper duct side cover 112 has a shielded front face and a rear face with both side portions partially cut away. In addition, the upper duct body 111 has a front surface in which the upper assembly portion 111a is formed and a rear surface in which both side portions are partially cut out. In addition, the upper duct side cover 112 and the upper duct body 111 has open ends corresponding to each other.

The upper duct 110 having an air flow space therein may be provided by coupling the upper duct body 111 and the upper duct side cover 112 to each other so that the open end is sealed.

In addition, by combining the upper duct side cover 112 and the upper duct body 111, two air inlets I1, I2, I3, I4 may be formed on the rear surface. In this case, according to the size of the upper duct side cover 112 is appropriately selected, the sizes of the air inlets I1, I2, I3, and I4 may be variously formed.

The upper duct side cover 112 and the upper duct body 111 may be coupled in a bonding, hooking or bolting manner, and a sealing rubber packing (not shown) may be further interposed therebetween.

On the other hand, the lower duct 120 may have a structure symmetrical with respect to the upper duct 110 and the air outlet (O). The upper duct 110 and the lower duct 120 have almost the same structure, and thus, the description of the upper duct main body 111 and the upper duct side cover 112 is performed by the lower duct main body 121 and the lower duct side cover 122. The description will be replaced.

Next, with reference to Figure 6, the operation of the cooling device 10 according to an embodiment of the present invention will be briefly described.

The casing of the battery module 20 may have vent holes (not shown) on the front and rear surfaces, respectively. Therefore, the battery module 20 has a ventilated structure in which outside air can be introduced into the inside of the battery module 20 and can flow out of the rear surface of the battery module 20.

As shown in FIG. 6, the cooling device 10 may be mounted on the rear surface of the battery module 20. This is so as not to interfere with the electrode terminal and the communication port on the front of the battery module 20.

When the fan unit 200 is driven, external air may be introduced into the battery module 20 through vent holes located in front of the battery module 20, as shown by arrows in FIG. 6.

The external air introduced as described above cools the battery cells by directly or indirectly contacting the heated battery cells while flowing along a cooling channel (not shown) formed between the battery cells in the battery module 20. Air absorbing the heat of the battery cells may be introduced into the plurality of air inlets (I1, I2, I3, I4) through the vent holes located at the rear of the battery module 20. In addition, air introduced into the plurality of air inlets I1, I2, I3, and I4 may be joined in the internal space of the duct unit 100 and discharged to the outside through one air outlet O. That is, as shown in Figure 6, so that the air passes through the air inlet (I1, I2, I3, I4) provided in each of the upper duct and the lower duct, the direction that the air passes through the air outlet (O) is the same Can be prepared.

Of course, by adjusting the rotation direction of the fan unit 200, the external air may be introduced into the rear surface of the battery module 20 to be discharged to the front of the two battery modules 20, as opposed to the above.

According to the configuration of the cooling device 10 of the present invention, it is possible to supply the outside air into the two battery modules 20 in one fan unit 200, which is energy efficient and reduces the number of parts of the cooling device 10. We can do it and can plan economic feasibility. In addition, since the air inlets I1, I2, I3, and I4 of the cooling apparatus 10 are configured to closely contact the vent holes of the battery module 20, the air suction force is increased to improve the cooling efficiency of the battery module 20. Can be.

Next, a power storage device including the cooling device 10 will be described with reference to FIGS. 7 and 8.

7 is a perspective view schematically illustrating a configuration of a power storage device according to an embodiment of the present invention, and FIG. 8 is a perspective view illustrating a rear surface of a rear panel of the battery rack housing of FIG. 7.

Referring to these drawings, a power storage device according to an embodiment of the present invention, at least one vent hole (not shown) on one side, a plurality of battery modules 20 stacked in a stack structure, a plurality of And a rack housing 30 accommodating the battery module 20, and the cooling device 10 for the battery module 20 described above.

Each of the plurality of battery modules 20 may include a plurality of unit cells, a battery management system (BMS), and a casing for accommodating them. The casing may have vent holes in a front side and a rear side of a ventilated structure. The plurality of battery modules 20 may be loaded in the rack housing 30 in a state where the plurality of battery modules 20 are connected in series, in parallel, or in a mixed manner in series and parallel.

As shown in FIG. 7, the rack housing 30 may be configured in the form of a rectangular cabinet, and may include shelves for supporting the battery module 20 therein. The rack housing 30 may be configured to draw out battery modules 20 through the front surface, and both sides may be opened for ventilation. In particular, the rack housing 30 according to an aspect of the present invention may include a rack rear panel 31 in which the cooling device 10 for the battery module 20 described above may be installed in multiple stages.

The rack rear panel 31 is configured to form a rear wall of the rack housing 30 and may include a plurality of through holes 32 in multiple stages along the height direction.

The through holes 32 may be formed to correspond to the rear shape of the duct unit 100 described above, respectively. In addition, a position where the plurality of through holes 32 are formed may correspond to positions of the battery modules 20 stacked in a stack structure. That is, any one through hole 32 may be positioned on the back extension lines of the two battery modules 20.

The cooling apparatus 10 may be mounted to the through holes 32 of the rack rear panel 31 one by one.

The cooling device 10 may further include a rib plate 130 protruding along the outer circumferential direction of the duct unit 100.

The cooling device 10 may be partially inserted from the outer side of the rack rear panel 31 to the inner side through the through hole 32, and may be bolted by the rib plate 130 and the rack rear panel 31. It may be fixed to the rack rear panel 31.

As shown in FIGS. 7 and 8, when the plurality of cooling devices 10 are mounted to the rack rear panel 31, four air inlets I1, I2, I3, and I4 of each cooling device 10 are provided. May be in close contact with the back of the two battery modules 20 positioned on the through hole 32 and the extension line, and may be in communication with the vent holes of the battery module 20.

According to the electric power storage device of the present invention, the battery module 20 is put into the front side of the rack housing 30 to be loaded, and the cooling device 10 on the rear side of the rack housing 30, that is, the rack rear panel 31. ), A very simple battery module 20 cooling system can be constructed. Moreover, maintenance work, such as replacing a specific battery cell and the components of the cooling apparatus 10, can also be performed very simply.

In addition, by cooling two battery modules 20 per unit of the cooling device 10 on a daily basis, even if the battery module 20 having a high current specification can be properly adjusted in temperature. Therefore, it is possible to maximize the life of the battery module 20 and the performance of the power storage device.

As described above, although the present invention has been described by way of limited embodiments and drawings, the present invention is not limited thereto and is intended by those skilled in the art to which the present invention pertains. Of course, various modifications and variations are possible within the scope of equivalents of the claims to be described.

In the present specification, terms indicating directions such as up, down, left, right, before, and after have been used, but these terms are merely for convenience of description and may vary depending on the location of an object or an observer's location. It will be apparent to those skilled in the art that the present invention can be made.

10: cooling unit for battery module 20: battery module
30: rack housing 31: rack rear panel
32: through hole 100: duct unit
110: upper duct 111: upper duct body
112: upper duct side cover 120: lower duct
121: lower duct body 122: lower duct side cover
130: rib plate 140: space part
200: fan unit 210: cooling fan
220: fan housing P: gasket
I1, I2, I3, I4: Air Inlet O: Air Outlet
B: Fan Mounting Bracket

Claims (13)

  1. A duct unit having a plurality of air inlets arranged in multiple stages and one air outlet communicating with the plurality of air inlets, respectively; And
    A fan unit mounted to the duct unit to discharge air to the outside;
    The plurality of air inlet,
    In close contact with one side of the at least two battery modules arranged in a multi-stage communication with the vent holes provided in each of the battery modules,
    The at least two battery modules are two battery modules stacked up and down,
    The duct unit,
    Among the two battery modules, the upper duct is mounted to the battery module located in the upper, and the lower duct is mounted to the battery module located in the lower,
    Each of the upper duct and the lower duct,
    The air inlet is provided on the rear surface corresponding to the number of vent holes of the battery module,
    The battery module includes two vent holes spaced apart from each other by a predetermined interval.
    Each of the upper duct and the lower duct,
    A total of two air inlets, one on each side of the rear surface corresponding to the positions of the two vent holes,
    The duct unit,
    By the coupling between the upper duct and the lower duct, provided with one air outlet in the front center,
    The one fan unit is coupled to the one air outlet,
    The duct unit is coupled to one end of any one end and the other end of the battery module such that both the duct unit and the fan unit are coupled to the same end of the battery module, and the fan unit is also any one side of the battery module. Is coupled to one end of the end and the other end,
    Cooling device for a battery module, characterized in that the direction in which air passes through the air inlet provided in each of the upper duct and the lower duct and the direction in which the air passes through the air outlet.
  2. The method of claim 1,
    The upper duct,
    An upper duct body having a portion of the air outlet at the front; And
    An upper duct side cover coupled to the upper duct body, the upper duct side cover defining the two air inlets together with the upper duct body on a rear surface thereof;
    The lower duct,
    A lower duct body having a remaining portion of the air outlet at the front thereof; And
    And a lower duct side cover coupled to the lower duct body to form the two air inlets together with the lower duct body on a rear surface thereof.
  3. The method of claim 2,
    The one air outlet is formed by mutual coupling of the upper duct body and the lower duct body, characterized in that the cooling device for a battery module.
  4. The method of claim 1,
    The duct unit,
    Further provided with a fan mounting bracket on the edge of the one air outlet,
    Cooling device for a battery module, characterized in that the fan unit is fixed to the fan mounting bracket.
  5. The method of claim 4, wherein
    Cooling device for a battery module, characterized in that a gasket made of a rubber material is interposed between the fan mounting bracket and the fan unit.
  6. The method of claim 1,
    Cooling device for a battery module, characterized in that a gasket made of a rubber material is interposed between the battery module and the plurality of air inlets.
  7. The method of claim 1,
    The duct unit,
    Cooling device for a battery module, characterized in that the thickness is formed within 5 to 15 centimeters.
  8. A plurality of battery modules having at least one vent hole on one side and stacked in a stack structure;
    A rack housing accommodating the plurality of battery modules, the rack housing having a rack rear panel having a plurality of through holes formed in multiple stages along a height direction; And
    A power storage device comprising the cooling device for a battery module of claim 1.
  9. The method of claim 8,
    The cooling device for the battery module may be partially inserted inward from the outside of the rack rear panel one by one through the through holes so that the plurality of air inlets communicate with vent holes of the at least two battery modules. Power storage device.
  10. The method of claim 9,
    The duct unit,
    An upper duct mounted to one battery module of at least two stacked battery modules, and a lower duct mounted to another battery module positioned below the one battery module and positioned below the upper duct; ,
    The upper duct and the lower duct are each provided with at least one air intake at the back,
    The air inlet is in close contact with the one side of the battery module in the rack housing and the power storage device, characterized in that in communication with the vent holes.
  11. The method of claim 9,
    The through holes of the rack rear panel are formed in a shape corresponding to the rear surface of the duct unit,
    The duct unit further includes a rib plate protruding along the outer circumferential direction, wherein the rib plate is bolted to the rack rear panel.
  12. delete
  13. delete
KR1020150113327A 2015-08-11 2015-08-11 Cooling apparatus for Battery module and Power storage apparatus including the same KR102074321B1 (en)

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KR102074321B1 true KR102074321B1 (en) 2020-02-06

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KR20130068984A (en) * 2011-12-16 2013-06-26 (주)브이이엔에스 Battery cooling system of an electric vehicle
KR101642325B1 (en) * 2013-10-17 2016-07-25 주식회사 엘지화학 Battery module and battery pack including the same
KR101836185B1 (en) * 2015-07-21 2018-03-08 주식회사 아모텍 Cooling system for battery

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