KR20170019212A - 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
KR20170019212A
KR20170019212A KR1020150113327A KR20150113327A KR20170019212A KR 20170019212 A KR20170019212 A KR 20170019212A KR 1020150113327 A KR1020150113327 A KR 1020150113327A KR 20150113327 A KR20150113327 A KR 20150113327A KR 20170019212 A KR20170019212 A KR 20170019212A
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KR
South Korea
Prior art keywords
duct
battery module
air
unit
battery
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Application number
KR1020150113327A
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Korean (ko)
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KR102074321B1 (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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    • 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 embodiment of the present invention, a cooling apparatus for a battery module comprises: a duct unit including a plurality of air inlets arranged in multiple stages and one air outlet connected with each air inlet; and a fan unit mounted on the duct unit and emitting air outside, wherein the plurality of air inlets adhere to one sides of at least two battery modules arranged in multiple stages and can be connected with vent holes respectively formed on the battery modules. The cooling apparatus for a battery module can effectively release heating of battery modules.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cooling device for a battery module,

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

In recent years, the issue of depletion of energy resources by fossil fuels, issues of environmental pollution, and economical efficiency of energy use have been highlighted. Thus, it is necessary to effectively overcome the inconsistency between power consumption and power production, In order to solve the overload caused by waste and power supply shortage, the concept of smart grid system that flexibly adjusts the power supply amount in connection with various information communication infrastructure is actively studied.

In other words, in the smart grid system, the power is stored when the power consumption is low, and when the power consumption is large, the stored power is supplied to the consumer together with the generated power.

In this case, the battery module functions as a main component for storing electric power.

In addition, such a secondary battery for power storage or a battery module can be used not only in a smart grid system but also in various other fields. For example, a battery module for power storage can also be used here because a large amount of electric power is required to be stored in an electric vehicle charging station that supplies charging electric power to the electric vehicle.

Such a battery module for power storage has a large number of secondary cells assembled in various structures (for example, a tower type stack in which battery modules are stacked in an upper and a lower structure) to constitute a large capacity system. The charging or discharging is continuously and repeatedly caused by the electrochemical reaction. Such a charging and discharging process inevitably accompanies heat generation. When the secondary battery has a high capacity, the heat generated by the charging and discharging increases dramatically.

Such exothermic phenomenon may cause inherent damage (damage) to the secondary battery causing the electrochemical reaction, which may cause deterioration of performance, may cause secondary problems that can not guarantee battery life, and may cause explosion due to heat It is known that it can be a fatal weakness to safety such as.

Therefore, a cooling system related to the driving of the secondary battery battery is required. Especially, as described above, the battery module for power storage is realized in a considerably high capacity and a large-scale integrated body form, so that there is a great need for a cooling system for solving such heat generation have.

The present invention has been made to solve the above problems, and it is an object of the present invention to provide a cooling device for a battery module and a power storage device including the same, which can effectively dissipate heat generated by battery modules constituting an electric power storage system.

Other objects and advantages of the present invention will become apparent from the following description, and it will be understood by those skilled in the art that the present invention is not limited thereto. It will also be readily apparent that the objects and advantages of the invention may be realized and attained by means of the instrumentalities and combinations particularly pointed out in the appended claims.

A cooling device for a battery module according to an aspect of the present invention includes: a duct unit having a plurality of air intake ports arranged in a multi-stage, and an air outlet port communicating with the plurality of air intake ports; And a fan unit mounted on the duct unit and discharging air to the outside, wherein the plurality of air inlets are in close contact with a side surface of at least two battery modules stacked in a multi-stage manner, And can communicate with the vent holes.

Wherein the at least two battery modules are two stacked battery modules, and the duct unit includes: an upper duct installed in a battery module located at an upper portion of the two battery modules; a lower duct installed at a lower portion of the battery module; And the upper duct and the lower duct may each include the air intake port corresponding to the number of vent holes of the battery module on the rear surface.

The duct unit may include the one air outlet on the front surface 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 distance, and the upper duct and the lower duct each include a total of two air inlets, one on each side of the back surface, corresponding to the positions of the two vent holes And the one air outlet may be provided at the front center portion.

Wherein the upper duct comprises: an upper duct body having a front portion of the air outlet; And an upper duct side cover coupled to the upper duct body to form the two air intake openings together with the upper duct body on a rear surface of the lower duct, Duct body; And a lower duct side cover coupled to the lower duct body and forming a lower air duct 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 have a thickness of 5 to 15 centimeters or less.

According to another aspect of the present invention, there is provided a power storage device comprising: a plurality of battery modules stacked in a stacked structure having at least one vent hole on one side; A rack housing having a rack rear panel accommodating the plurality of battery modules, the rack housing having a plurality of through holes formed in multiple stages along a height direction; And a fan unit mounted on the duct unit so as to cover the one air outlet, and a plurality of air intake openings And a cooling device for the battery module, wherein the plurality of air inlets are communicated with the vent holes of the at least two battery modules, Lt; / RTI >

The duct unit may include an upper duct installed in one of the at least two battery modules stacked and a lower duct located at a lower portion of the upper duct and mounted on another battery module located below the one battery module Wherein the air duct is in close contact with one side surface of the battery module in the rack housing and communicates with the vent holes, .

Wherein 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 comprises a rib plate protruding along an outer circumferential direction, and the rib plate is connected to the rack rear panel Bolts can be fastened.

According to an aspect of the present invention, there can be provided a cooling device for a battery module, which can be assembled with a plurality of stacked battery modules, and forcedly air-cools the battery module together with one fan unit.

According to another aspect of the present invention, EPDM (Ethylene Propylene Diene Mclass) is applied to the contact surface with the battery module having the vent hole, so that no air leaks between the battery module and the air inlet, thereby improving the cooling performance of the battery module.

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

Further, according to the power storage device configuration of the present invention, maintenance work such as replacement of parts of the cooling device can be performed very easily.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate preferred embodiments of the invention and, together with the description of the invention given below, serve to further the understanding of the technical idea of the invention. And should not be construed as limiting.
1 is a perspective view of a cooling device for a battery module according to an embodiment of the present invention mounted on two battery modules from the front.
Fig. 2 is a front view of the duct unit of Fig. 1; Fig.
Fig. 3 is a perspective view of the cooling device for the battery module of Fig. 1 viewed from the rear. Fig.
Fig. 4 is a rear view of the cooling device for the battery module of Fig. 1; Fig.
5 is an exploded perspective view of a cooling device for a battery module according to an embodiment of the present invention.
6 is a view for explaining the operation of a cooling device for a battery module according to an embodiment of the present invention.
7 is a perspective view schematically showing a configuration of a power storage device according to an embodiment of the present invention.
Fig. 8 is a perspective view showing the back surface of the battery rack rear panel of Fig. 7; Fig.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary terms, and the inventor should appropriately interpret the concepts of the terms appropriately It should be construed as meaning and concept consistent with the technical idea of the present invention based on the principle that it can be defined.

Therefore, the embodiments described in this specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention and do not represent all the technical ideas of the present invention. Therefore, It is to be understood that equivalents and modifications are possible.

In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail.

The embodiments of the present invention are provided to explain the present invention more fully to the ordinary artisan, so that the shape and size of the components in the drawings may be exaggerated, omitted or schematically shown for clarity. Thus, the size or ratio of each component does not entirely reflect the actual size or ratio.

1 is a front view of a duct unit of FIG. 1, and FIG. 3 is a sectional view of a battery module of the battery module of FIG. 1, FIG. 4 is a rear view of the cooling device for the battery module of FIG. 1; FIG.

The battery module 20 to be cooled by the cooling device 10 for the battery module 20 according to the present invention is an air-cooled battery module 20, and includes a plurality of vent holes (Not shown), and may have a ventilating structure through which external air can flow in and out through the vent holes. In particular, the battery module 20 may be stacked in a stack structure so as to be used for constructing a battery pack or a power storage device.

1 and 2, a 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 surface of two stacked battery modules 20 And a fan unit (200) mounted to the duct unit (100).

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

The fan unit 200 may include a fan housing 220 that rotatably supports the cooling fan 210 and the cooling fan 210 and is mountable to the duct unit 100.

The cooling fan 210 rotates in the forward direction to suck the air inside the battery module 20 and discharge it out of the duct unit 100 or vice versa to rotate the outside air through the duct unit 100, And may supply outside air to the modules 20.

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

The fan housing 220 can be mounted on the front face of the duct unit 100. More specifically, the fan housing 220 can be configured to be inserted into the air outlet O of the duct unit 100 to be described later and bolt-fastened. 1 and 2, the fan housing 220 may have a shape and a size that are shaped to match the size of the air outlet O, and may have a hole 221 May be provided.

As shown in FIGS. 2 to 4, the duct unit 100 is provided in the form of a cap or a cap capable of integrally covering one side of at least two stacked battery modules 20, (I1, I2, I3, I4) and one air outlet (O) at the front. Also, the duct unit 100 can be mounted in a very slim form on the rear surface of the battery module 20 by being formed to have a thickness of 5 to 15 centimeters or less.

 The plurality of air inlets I1, I2, I3, and I4 may be disposed in close contact with one surface of the battery module 20 to communicate with vent holes (not shown) so that no air leaks.

Particularly, the gasket P can be further applied to the outer circumferential edge of the air intake ports I1, I2, I3, and I4, that is, the portion of the battery module 20 that is in close contact with the one surface. The gasket P is preferably made of a rubber material and may be ethylene propylene diene monomer (EPDM).

EPDM is applied between one side of the battery module 20 and the air inlets I1, I2, I3 and I4 to prevent air leakage between the battery module 20 and the air inlets I1, I2, I3 and I4. Air suction performance can be improved. In addition, friction and noise between the battery module 20 and the air inlets I1, I2, I3 and I4 due to the vibration of the fan unit 200 may be alleviated.

According to the configuration of the duct unit 100 of the present invention, the air in each battery module 20 is merged into the internal space of the duct unit 100 and then discharged to the outside or, conversely, And then supplied to the battery modules 20 through the air inlets I1, I2, I3, and I4.

The duct unit 100 according to an embodiment of the present invention can be designed so that two battery modules 20 can be air-cooled by one fan unit 200. [ Of course, unlike the present embodiment, the duct unit 100 is designed to have four or more air inlets and one air outlet to allow three or more battery modules 20 to be air-cooled by one fan unit 200 It is possible.

However, if the number of the air inlets I1, I2, I3, I4 is increased relative to one fan unit 200, the air suction force may decrease and the cooling efficiency may be lowered. Therefore, It is preferable to configure the duct unit 100 so that the two battery modules 20 can be air-cooled. Hereinafter, the configuration of the duct unit 100 will be described in more detail.

1 to 4, the duct unit 100 according to the present embodiment includes one air outlet O on the front side and a total of four air inlets I1, I2, I3, and I4 On the back side.

A total of four air inlets I1, I2, I3 and I4 of the duct unit 100 according to the present embodiment are formed in correspondence with the number of the vent holes provided on the back surface of the two battery modules 20, Lt; / RTI > It is needless to say that the number, shape, and position of the air intake openings I1, I2, I3, and I4 of the duct unit 100 may vary depending on the number, shape, and position of the vent holes of the battery module 20, It may be designed.

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

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

5, the duct unit 100 may include an upper duct 110 and a lower duct 120, which are assembled and disassembled from each other.

The upper duct 110 and the lower duct 120 may correspond one-to-one correspondence to one of the two stacked battery modules 20, as shown in FIG. In other words, the upper duct 110 is configured such that two air inlets I1, I2, I3, and I4 are closely attached 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, and I4 may be closely attached to the rear surface of the battery module 20 in the position.

The two stacked battery modules 20 may have a slight gap therebetween. The duct unit 100 is divided into the upper duct 110 and the lower duct 120 so that the duct unit 100 can be tightly adhered to the two battery modules 20 individually.

That is, since the upper duct 110 and the rear face of the battery module 20 and the rear face of the lower duct 120 and the rear face of the battery module 20 can be intimately contacted with each other, air leakage at these contact portions can be significantly reduced. Therefore, when the fan unit 200 is driven, the pressure loss inside the duct unit 100 is small, so that the air suction force is increased and the cooling performance can be improved.

The upper duct 110 includes an upper duct body 111 and an upper duct side cover 112. 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 an air outlet O on 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 body 111 may have a portion of an air outlet O shape on its front side and the lower duct body 121 may have a remaining portion of the air outlet O shape on its front side. Hereinafter, a part of the air outlet O shape of the upper duct body 111 will be referred to as an upper assembly part 111a and a remaining part of the air outlet O shape of the lower duct body 121 will be referred to as a lower part It is defined as an assembly section 121a.

5, the upper assembly 111a may be provided with a front body of the upper duct body 111 partially opened downward with respect to an open end of the upper duct body 111, The lower assembly part 121a may be formed in such a manner that the front body of the lower duct body 121 is partially opened upward with respect to the open end of the lower duct body 121.

The upper duct body 111 and the lower duct body 121 are vertically coupled to each other so that the upper assembly part 111a and the lower assembly part 121a are shaped like one. At this time, the air outlet O may be formed at the front center portion 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 the edges of the upper assembly part 111a and the lower assembly part 121a. The fan mounting bracket B may have a rectangular frame shape when the upper assembly part 111a and the lower assembly part 121a are assembled together. The fan mounting bracket B may be provided at a position spaced a predetermined distance inward from the front end of the air outlet O. Accordingly, the depth of the fan unit 200 that can be inserted into the air outlet O by being blocked by the fan mounting bracket B can be limited.

The fan mounting bracket (B) may further include a screw hole in the corner area. The screw holes may correspond to the through holes of the fan housing 220 when the fan unit 200 is mounted. The fan unit 200 and the upper duct body 111 and the lower duct body 121 can be combined into one body by inserting the four bolts into the through holes of the fan housing 220 and fastening them to the screw holes .

A gasket P may further be interposed between the fan unit 200 and the fan mounting bracket B. [ The gasket P may be an ethylene propylene diene monomer (EPDM). By applying the gasket P in this way, it is possible to improve vibration resistance and airtightness during air discharge.

In addition, the upper duct body 111 and the lower duct body 121 may further include a space 140, respectively. The space 140 is a plate 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 apart from each other. The space portion 140 may be appropriately sized according to the interval between the two battery modules 20 mounted on the vehicle.

The upper duct side cover 112 has a shielded front surface and a back surface with both side portions partially cut away. The upper duct body 111 has a front surface on which the upper assembly 111a is formed and a rear surface on which both side portions are partially cut. The upper duct side cover 112 and the upper duct body 111 have open ends corresponding to each other.

The upper duct body 111 and the upper duct side cover 112 may be coupled to each other so that the open ends thereof are hermetically closed, thereby providing an upper duct 110 having an air flow space therein.

Two air intake openings I1, I2, I3 and I4 may be formed on the rear surface by the coupling of the upper duct side cover 112 and the upper duct body 111. [ At this time, the sizes of the air intake openings I1, I2, I3, and I4 may be variously formed by suitably selecting the size of the upper duct side cover 112.

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

Meanwhile, the lower duct 120 may have a structure symmetrical with respect to the upper duct 110 and the air outlet O. The upper duct body 110 and the lower duct 120 have substantially the same structure and thus the lower duct body 121 and the lower duct side cover 122 are formed in the same manner as the upper duct body 111 and the upper duct side cover 112, The description will be replaced.

Next, referring to Fig. 6, the operation of the cooling apparatus 10 according to the embodiment of the present invention will be briefly described.

The casing of the battery module 20 may have a vent hole (not shown) on the front surface and a rear surface, respectively. Accordingly, the battery module 20 has a ventilating structure in which external air can flow in from the front and can flow out to the rear.

As shown in FIG. 6, the cooling device 10 may be mounted on the rear surface of the battery module 20. This prevents the front surface of the battery module 20 from interfering with the electrode terminal and the communication port.

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

The introduced external air flows directly or indirectly to the heated battery cells while flowing along a cooling channel (not shown) formed between the battery cells inside the battery module 20 to cool the battery cells. The air that absorbs the heat of the battery cells may be introduced into the plurality of air inlets I1, I2, I3, I4 through the vent holes located on the rear side of the battery module 20. [ The air introduced into the plurality of air inlets I1, I2, I3, and I4 may be combined in the inner space of the duct unit 100 and discharged to the outside through one air outlet O.

Of course, the rotation direction of the fan unit 200 may be adjusted so that the external air may flow into the rear surface of the battery module 20 and be discharged to the front surface of the two battery modules 20, contrary to the above.

According to the configuration of the cooling device 10 of the present invention as described above, it is possible to supply the outside air to the inside of the two battery modules 20 by one fan unit 200, which is energy efficient and reduces the number of parts of the cooling device 10. [ It can be economical. The air intake ports I1, I2, I3 and I4 of the cooling device 10 are closely attached to the vent holes of the battery module 20 so that the air suction force is increased to improve the cooling efficiency of the battery module 20. [ .

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

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

Referring to these drawings, a power storage device according to an embodiment of the present invention includes a plurality of battery modules 20 stacked in a stacked structure, at least one vent hole (not shown) A rack housing 30 for housing the battery module 20 of the battery module 20 and a 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 on the front and back sides with a ventilation structure. The plurality of battery modules 20 may be stacked in the rack housing 30 in a serial, parallel or series and parallel combination manner.

As shown in FIG. 7, the rack housing 30 may be formed in a cabinet shape of a flat surface, and shelves for supporting the battery module 20 may be provided therein. The rack housing 30 can be configured to allow the battery modules 20 to be drawn in and out through the front surface, and both sides can be opened for ventilation. In particular, the rack housing 30 according to one 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. The rack rear panel 31 may have a plurality of through holes 32 in multiple stages along the height direction.

The through-holes 32 may be formed to correspond to the shape of the rear surface of the duct unit 100 described above. In addition, the positions at which the plurality of through-holes 32 are formed may correspond to positions of the battery modules 20 stacked in a stacked structure. That is, any one of the through-holes 32 may be positioned on the extension line of the back surface of the two battery modules 20.

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

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

The cooling device 10 can be partly inserted inward from the outside of the rack rear panel 31 through the through hole 32 and can be partially inserted into the rack plate 31 by the bolt connection of the rib plate 130 and the rack rear panel 31 And can be fixed to the rack rear panel 31.

I2, I3, and I4 of each cooling device 10 when a plurality of cooling devices 10 are mounted on the rack rear panel 31, as shown in Figs. 7 and 8, Can be in close contact with the back surface of the two battery modules 20 located on the extended line with the through hole 32 and can communicate with the vent holes of the battery module 20.

The battery module 20 is mounted on the front side of the rack housing 30 and mounted on the rear side of the rack housing 30, that is, on the rack rear panel 31, It is possible to construct the cooling system of the battery module 20 very easily. Maintenance work such as replacing a specific battery cell or a component of the cooling apparatus 10 can also be performed very easily.

Further, by cooling the two battery modules 20 per unit of the cooling device 10 in one unit, the temperature can be appropriately adjusted even in the battery module 20 having a high current specification. Therefore, the life of the battery module 20 and the performance of the power storage device can be maximized.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. It will be understood that various modifications and changes may be made without departing from the scope of the appended claims.

In the present specification, terms indicating upward, downward, leftward, rightward, forward, and backward directions are used, but these terms are for convenience of explanation only and may vary depending on the position of an object or the position of an observer It will be apparent to those skilled in the art that the present invention is not limited thereto.

10: cooling device 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:
200: fan unit 210: cooling fan
220: Fan housing P: Gasket
I1, I2, I3, I4: air inlet O: air outlet
B: Bracket for mounting the fan

Claims (13)

  1. A duct unit having a plurality of air inlets arranged in multiple stages and an air outlet communicating with the plurality of air inlets, respectively; And
    And a fan unit mounted on the duct unit and discharging air to the outside,
    Wherein the plurality of air inlets comprise:
    Wherein the battery module is in close contact with one side surface of at least two battery modules stacked in a multi-stage manner, and is communicated with vent holes provided in each of the battery modules.
  2. The method according to claim 1,
    Wherein the at least two battery modules are two stacked battery modules,
    The duct unit includes:
    An upper duct mounted on the upper battery module and a lower duct mounted on the lower battery module among the two battery modules,
    The upper and lower ducts
    And the air intake port corresponding to the number of the vent holes of the battery module is formed on the back surface of the battery module.
  3. 3. The method of claim 2,
    The duct unit includes:
    Wherein the one air outlet is provided on the front side of the lower duct by coupling between the upper duct and the lower duct.
  4. The method of claim 3,
    The battery module includes two vent holes spaced apart from each other by a predetermined distance,
    The upper and lower ducts, respectively,
    A total of two air intake holes are provided on both sides of the rear surface so as to correspond to the positions of the two vent holes,
    Wherein the one air outlet is provided at a front center portion.
  5. 5. The method of claim 4,
    In the upper duct,
    An upper duct body having a front portion of the air outlet; And
    And an upper duct side cover coupled to the upper duct body and forming the two air intake openings together with the upper duct body on the rear face,
    The lower duct includes:
    A lower duct body having a front portion having the remaining portion of the air outlet; And
    And a lower duct side cover coupled to the lower duct body to form the two air intake openings together with the lower duct body on a rear surface thereof.
  6. 6. The method of claim 5,
    Wherein the one air outlet is formed by mutual coupling of the upper duct body and the lower duct body.
  7. 3. The method of claim 2,
    The duct unit includes:
    And a fan mounting bracket at an edge of the one air outlet,
    And the fan unit is fixed to the fan mounting bracket.
  8. 8. The method of claim 7,
    And a rubber gasket is interposed between the fan mounting bracket and the fan unit.
  9. The method according to claim 1,
    And a rubber gasket is interposed between the battery module and the plurality of air inlets.
  10. The method according to claim 1,
    The duct unit includes:
    And a thickness of the battery module is 5 to 15 cm or less.
  11. A plurality of battery modules having at least one vent hole on one side and stacked in a stacked structure;
    A rack housing having a rack rear panel accommodating the plurality of battery modules, the rack housing having a plurality of through holes formed in multiple stages along a height direction; And
    A duct unit including a plurality of air inlets and an air outlet for discharging the air introduced into the plurality of air inlets to the outside; and a battery unit comprising a fan unit mounted on the duct unit to cover the one air outlet And a cooling device for the module,
    Wherein the cooling device for the battery module is partially inserted in the inside from the outside of the rack rear panel one by one through the through holes so that the plurality of air inlets are communicated with the vent holes of the at least two battery modules Power storage.
  12. 12. The method of claim 11,
    The duct unit includes:
    A lower duct installed in one of the at least two battery modules stacked and a lower duct located in a lower portion of the upper duct and mounted in another battery module located under the one battery module In addition,
    Wherein the upper duct and the lower duct each have at least one air intake port on the rear surface thereof,
    Wherein the air inlet is in close contact with one side surface of the battery module in the rack housing and communicates with the vent holes.
  13. 12. The method of claim 11,
    The through holes of the rack rear panel are formed in a shape corresponding to a rear surface of the duct unit,
    Wherein the duct unit further comprises a rib plate protruding along an outer circumferential direction, and the rib plate is bolted to the rack rear panel.
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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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20130068984A (en) * 2011-12-16 2013-06-26 (주)브이이엔에스 Battery cooling system of an electric vehicle
KR20150044599A (en) * 2013-10-17 2015-04-27 주식회사 엘지화학 Battery module and battery pack including the same
KR20170011108A (en) * 2015-07-21 2017-02-02 주식회사 아모텍 Cooling system for battery

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20130068984A (en) * 2011-12-16 2013-06-26 (주)브이이엔에스 Battery cooling system of an electric vehicle
KR20150044599A (en) * 2013-10-17 2015-04-27 주식회사 엘지화학 Battery module and battery pack including the same
KR20170011108A (en) * 2015-07-21 2017-02-02 주식회사 아모텍 Cooling system for battery

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