CN101401228A - Middle and large-sized battery pack of excellent cooling efficiency - Google Patents
Middle and large-sized battery pack of excellent cooling efficiency Download PDFInfo
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- CN101401228A CN101401228A CNA2007800086354A CN200780008635A CN101401228A CN 101401228 A CN101401228 A CN 101401228A CN A2007800086354 A CNA2007800086354 A CN A2007800086354A CN 200780008635 A CN200780008635 A CN 200780008635A CN 101401228 A CN101401228 A CN 101401228A
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- 238000001816 cooling Methods 0.000 title claims abstract description 38
- 239000002826 coolant Substances 0.000 claims abstract description 138
- 238000004458 analytical method Methods 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 229910001416 lithium ion Inorganic materials 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 229910018095 Ni-MH Inorganic materials 0.000 description 1
- 229910018477 Ni—MH Inorganic materials 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 239000003502 gasoline Substances 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052987 metal hydride Inorganic materials 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
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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
- 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
-
- 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
- H01M50/244—Secondary casings; Racks; Suspension devices; Carrying devices; Holders characterised by their mounting method
-
- 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
- H01M10/46—Accumulators structurally combined with charging apparatus
-
- 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
- H01M10/61—Types of temperature control
- H01M10/613—Cooling or keeping cold
-
- 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
- H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
- H01M10/625—Vehicles
-
- 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
- H01M10/64—Heating or cooling; Temperature control characterised by the shape of the cells
- H01M10/647—Prismatic or flat cells, e.g. pouch cells
-
- 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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
- H01M10/6561—Gases
- H01M10/6563—Gases with forced flow, e.g. by blowers
-
- 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
- H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
- H01M10/6561—Gases
- H01M10/6566—Means within the gas flow to guide the flow around one or more cells, e.g. manifolds, baffles or other barriers
-
- 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
-
- 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
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Secondary Cells (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
Disclosed herein is a middle- or large-sized battery pack comprising a battery module including a plurality of unit modules horizontally stacked while each unit module is vertically erected on one side, the battery module being mounted in a sealed space of a housing member, wherein the housing member is provided at the upper or lower end of one side thereof with a coolant inlet port and at the lower or upper end of the opposite side thereof with a coolant outlet port, the battery module is mounted in the housing member such that the upper or lower end surface of the battery module is tilted toward the coolant inlet port by a predetermined angle, whereby a coolant introduced through the coolant inlet port in parallel with the battery module passes perpendicularly through the unit modules and is then discharged to the opposite side, and gaps (vertical flow channels) defined between the unit modules at the tilted upper or lower end surface of the battery module are arranged in parallel with the direction in which the coolant is introduced, whereby the cooling efficiency and the cooling uniformity of the battery pack are improved while the battery pack has a compact structure.
Description
Technical field
The present invention relates to a kind of medium-sized or large-sized battery pack (batterypack) with high cooling efficiency, and more specifically, a kind of medium-sized or large-sized battery pack that relates to comprises: battery module, this battery module comprises a plurality of unit modules, these unit modules level when each unit module is erect on a side is vertically piled up, this battery module is fixed in the seal cavity of casing component, wherein this casing component is provided with the coolant entrance port and is provided with the coolant outlet port in the upper end or the lower end of its opposite side in the upper end or the lower end of one side, this battery module is fixed in this casing component so that the upper end face of this battery module or rear surface tilt to this coolant entrance port with a predetermined angular, makes the cooling agent introduced by this coolant entrance port parallel with this battery module vertically through this unit module and be discharged to this opposite side then by this; And gap (vertically flow channel), this gap is limited between the unit module at the upper end face or the rear surface place of the inclination of this battery module, and be positioned to and be parallel to the direction of introducing cooling agent, thereby when this battery pack had cramped construction, the cooling effectiveness and the cooling uniformity of this battery pack improved.
Background technology
By using one of caused greatest problem of vehicle such as the fossil fuel of gasoline and diesel oil is exactly to have produced air pollution.The secondary cell that use can be charged and discharge has attracted a large amount of concerns as the technology of the power resources of vehicle as a kind of method that addresses the above problem.Therefore, developed and only use the motor vehicle (EV) that battery moves and unite the hybrid electric vehicle (HEV) that uses battery and conventional engine.Nowadays on market, using some of them motor vehicle and hybrid electric vehicle.Nickel-metal hydrides (Ni-MH) secondary cell mainly is used as the power resources of motor vehicle (EV) and hybrid electric vehicle (HEV).Yet, in recent years, attempted using lithium rechargeable battery.
For this type of secondary cell, need high output and big capacity as the power resources of motor vehicle (EV) and hybrid electric vehicle (HEV).For this purpose, a plurality of small-sized secondary batteries (element cell) connection in series or in parallel with each other is with the composition battery module, and the connection in series or in parallel with each other of a plurality of battery module is to form battery pack.
Yet, in this type of high output, jumbo secondary cell, produce a large amount of heats from element cell at the charging and the interdischarge interval of element cell.When effectively not removing at the charging of element cell and interdischarge interval during from heat that element cell produces, heat can accumulate in the element cell, and the result has damaged element cell.Therefore, must be provided for cooling off the cooling system of vehicle battery packs, this vehicle battery packs is high output, jumbo secondary cell.
What should take into full account when cooling system is installed a bit is to minimize owing to cooling system makes the increase of battery pack volume.Usually, coolant flow passage is formed and makes cooling agent flow and flow through the inside of battery module along the outer surface of battery module, to improve the cooling effectiveness of cooling system.Yet the structure of coolant flow passage is very complicated and be the factor that increases the battery pack volume.Therefore, form the flow channel of inclination at the part place of battery module, so that can lead flow of coolant in inclination mode shown in Figure 1.
Referring to Fig. 1, pile cooling 1 comprises the battery module of being made up of a plurality of batteries 2, is fixed on the coolant entrance port 3 of the lower end of battery module 2 in the inclination mode, and the coolant outlet port 4 that is fixed on the upper end of battery module 2 in the inclination mode.Battery module 2 comprises a plurality of unit modules 5, and this unit module is electrically connected mutually so that this unit module 5 level when each unit module 5 is vertically erect on a side is piled up.Each unit module 5 comprises the secondary cell 6 of a plurality of mutual electrical connections.Be formed with little gap between each secondary cell 6 of each unit module 5, cooling agent is by this Clearance Flow.Therefore, the heat that the cooling agent of introducing by coolant entrance port 3 flows and produces from each secondary cell 6 to remove along this flow channel, and the coolant outlet port 4 of the upper end by being fixed on battery module 2 is discharged then.
Yet there is following problem in the pile cooling 1 that constitutes as shown in Figure 1.
At first, because coolant entrance port 3 and coolant outlet port 4 are separately fixed at the lower end and the upper end of battery module 2 with the form of pipeline, so the height of battery pack can increase the size that pipeline.Especially, the following pipeline that its width reduces gradually from coolant entrance port 3 is fixed on the rectangular lower of battery module 2, with and the last pipeline that increases gradually towards coolant outlet port 4 of width be fixed on the rectangle top of battery module 2.The exceptional space that therefore, need be used for fixing pipeline and following pipeline.When being installed in the limited inner space of vehicle, the height that pile cooling increased has served as serious barrier factors when battery module 2 (it comprises the unit module 5 that laterally piles up, and each unit module 5 is vertical upward vertical on a side).
Therefore, multiple technologies are developed, are used to constitute a cooling system so that coolant channel is formed as shown in Figure 1, and maximum using is used for fixing the space of battery module and surround simultaneously.
Thus, 2004-22317 Japan patent applicant announce and 2005-35478 Korean patent application publication disclose a kind of cooling system of medium-sized or large-sized battery pack, it is characterized in that: battery module is fixed in group shell (pack case), and battery module inclination one predetermined angular itself is so that just can form coolant flow passage in battery pack under the situation of the pipeline that is not provided for introducing and discharge cooling agent simultaneously.In addition, the 2004-22317 Japan patent applicant announce discloses and a kind ofly has been used for that a plurality of element cells are fixed on the shell of compact battery module and the predetermined angular that simultaneously this element cell tilted forms the technology of coolant flow passage.In disclosed cooling system, formed the coolant flow passage of expectation, be fixed with the inner space of the shell of the inner space of group shell of battery module or battery module with maximum using.Therefore, disclosed cooling system shows that a kind of manufacturing has the possibility than the battery pack of pipeline configuration smaller szie shown in Figure 1.
Yet the same with the structure of Fig. 1, disclosed cooling system has following problem aspect operational efficiency.
Especially, the cooling agent of introducing by the coolant entrance port strikes the outer surface of unit module or secondary cell vertically, is introduced in coolant flow passage that limits between each unit module or the coolant flow passage that limits between the secondary cell (element cell) of forming each unit module then.Because cooling agent strikes the outer surface of unit module vertically, is introduced into coolant flow passage then, therefore may improve cooling effectiveness because of forming eddy current.Yet in the battery module that comprises a plurality of high integrated unit modules that pile up (or secondary cell), the cooling agent that belongs to fluid can run into high flow resistance.Therefore, when unit module (or secondary cell) makes that with the overall size that reduces battery pack coolant flow passage narrows down with littler interval layout, must produce the required higher actuating force of increase coolant flow speed for cooling agent drive source (for example, hair-dryer).
In addition, form the coolant entrance port vertically going up of unit module (or secondary cell).Therefore, (this medium-sized or large-sized battery pack constitutes with such structure: a plurality of unit modules (or secondary cell) pile up so that high output and big capacity to be provided at the battery module that is used for medium-sized or large-sized battery pack, so that the width of this battery module is greater than the length of each unit module), the even phenomenon of the inhomogeneous cooling of battery pack is very serious.Especially, be incorporated into absolute magnitude near the cooling agent of the unit module (or secondary cell) of coolant entrance port and be less than the absolute magnitude that is incorporated into away from the cooling agent of the unit module (or secondary cell) of coolant entrance port.Therefore, the even phenomenon of the inhomogeneous cooling of battery pack is very serious, and this is more serious in having the said structure of high flow resistance.
Therefore, be badly in need of a kind of technology that fundamentally addresses the above problem.
Summary of the invention
Technical problem
Therefore, be the technical problem that addresses the above problem and other wait to solve, made the present invention.
Especially, the purpose of this invention is to provide a kind of battery pack, this battery pack constitutes with such structure: battery module be fixed in the casing component so that this battery module with a predetermined angle incline, thereby in the gap that between the upper end face of this casing component and this battery module, limits and in the gap that between the rear surface of this casing component and this battery module, limits, form the flow channel that nature tilts.Therefore, this battery pack has cramped construction, and not having increases its height because of the cooling structure such as pipeline.
Another object of the present invention provides a kind of battery pack, this battery pack constitutes with such structure: the gap that limits between unit module is parallel to the direction of introducing cooling agent and arranges, thereby realized effectively cooling agent is fed to battery module, and the amount of coolant that is fed to the various piece of battery module is uniformly, thereby has improved the cooling effectiveness and the cooling uniformity of battery pack.
Another purpose of the present invention provides a kind of battery pack, and this battery pack constitutes with such structure: the shape of the lower frame of composition battery pack is consistent with the vehicle inside structure, thereby makes battery pack more stably be fixed in the vehicle.
Technical scheme
According to the present invention, above-mentioned and other purposes can realize by a kind of medium-sized or large-sized battery pack is provided, this medium-sized or large-sized battery pack comprises: battery module, this battery module comprises a plurality of unit modules, these unit modules level when each unit module is erect on a side is vertically piled up, this battery module is fixed in the seal cavity of casing component, wherein this casing component is provided with the coolant entrance port and is provided with the coolant outlet port in the upper end or the lower end of its opposite side in the upper end or the lower end of one side, this battery module is fixed in this casing component so that the upper end face of this battery module or rear surface tilt to this coolant entrance port with a predetermined angular, makes the cooling agent introduced by this coolant entrance port parallel with this battery module vertically through this unit module and be discharged to this opposite side then by this; And gap (vertically flow channel), this gap is limited between this unit module at the inclination upper end face or the rear surface place of this battery module, and is positioned to and is parallel to the direction of introducing cooling agent.
As mentioned above, battery pack according to the present invention constitutes with such structure: a battery module that comprises the unit module of a plurality of mutual electrical connections, perhaps two or more battery modules are fixed in the casing component.
Each unit module can be a battery cell (batterycell) that can be recharged and discharge or the combination of two or more battery cells.
In this manual, term " electrical connection " means unit module with " combination " or battery cell is in series or in parallel with each other is connected, and so that the battery pack with desired output and capacity to be provided, preferably has high output and jumbo battery pack.For example, each battery cell comprises negative electrode, anode, dividing plate and electrolyte, and each battery cell is fixed in the airtight container so that each battery cell can be recharged and discharge.Preferably, each battery cell can be lithium ion battery Battery pack, lithium ion polymer battery pack battery or ni-MH battery Battery pack.
As mentioned above, in battery pack according to the present invention, the coolant entrance port be formed at casing component a side upper end or lower end and be parallel to gap (vertically flow channel) between the unit module that tilts.Therefore, the coolant entrance port is formed at the long limit of medium-sized or large-sized battery module, and this medium-sized or large-sized battery module comprises a plurality of unit modules that pile up.
Usually, the length on the long limit of battery module is by the numerical limitations of employed unit module.For example, suppose and used the rectangular element module, the length of each unit module is a, the width of each unit module is b, the thickness of each unit module is c, and the number of employed unit module is x, so by the stackable unit module to number x and unit module mutually closely the battery module that constitutes of contact be formed hexahedral shape, this hexahedron has length to be a and c * x and highly to be the limit of b.
Illustrate in greater detail this relation with reference to Fig. 2, Fig. 2 shows the battery module according to the preferred embodiments of the invention.Referring to Fig. 2, battery module 20 comprises that number is the unit module 10 of x.The length of supposing each unit module is a, the width of each unit module is b, and the thickness of each unit module is c, so for obtain high output and big capacity must the stackable unit module so that the length on the limit of battery module satisfies with lower inequality: a＜c * x.In this case, the length on the long limit of battery module is c * x.
According to the present invention, the coolant entrance port is in a side of casing component and be parallel to gap (vertically flow channel) between unit module, so the coolant entrance port is formed at the (position of c * x), long limit of corresponding battery module.
This structure has multiple effect.At first, the flow resistance that is produced when cooling agent is introduced into vertical flow channel between the unit module reduces, so the cooling effectiveness of battery module improves.Secondly, reduced the length between coolant entrance port part farthest, so the cooling uniformity of battery module has increased at coolant entrance port and each vertical flow channel.Once more, the coolant entrance port is the shape of a series of through holes, and therefore the length on the long limit of the corresponding battery module of this through hole just can realize flow of coolant by little actuating force.
With regard to first effect, the coolant entrance port of the side by being formed at casing component and cooling agent that level is introduced are parallel to the cooling agent incoming direction by introducing naturally and the vertical flow channel (gap between each unit module) that forms.Therefore, flow resistance reduces greatly.From the angle of macroscopic view, cooling agent vertically flows through each unit module.On the other hand, from the angle of microcosmic, presented the flow gradient that cooling agent reduces gradually from the coolant entrance port.Therefore, the flow of coolant resistance has reduced, also maximizing cooling effectiveness therefore even when using little actuating force.
With regard to second effect, coolant entrance port and each vertical flow channel be from the coolant entrance port distance between the part farthest, is by the length restriction of each unit module.Therefore, when considering following such fact: the distance meeting between the vertical flow channel part of each of coolant entrance port and conventional batteries module increases according to the length on the long limit of battery module, and coolant entrance port and the distance of each vertical flow channel between coolant entrance port part farthest seem very little so.Therefore, can reduce greatly at each vertical flow channel from the even phenomenon of the inhomogeneous cooling at coolant entrance port part place farthest.
With regard to the 3rd effect, the through hole of forming the coolant entrance port has increased the amount of the cooling agent of time per unit introducing, therefore, just can realize flow of coolant by little actuating force.Simultaneously, can be on the big zone of battery module the uniform distribution cooling agent.For this purpose, can consider the structure that provides such: the coolant entrance port is formed directly into the upper end of casing component, and this upper end is over against the upper end face of battery module.Yet in this case, the cumulative volume that has increased battery pack inevitably is to guarantee the space at the outside corresponding coolant entrance port of casing component.Therefore, said structure is not preferred.
Preferably, the coolant outlet port is formed on the side relative with coolant entrance port side, so that can discharge through behind the unit module at cooling agent by the cooling agent of coolant entrance port introducing.For example, the coolant entrance port can be formed at the upper end-face edge of a side and adjacent shells member with the shape of a series of through holes, and the coolant outlet port can be formed at least one side of casing component lower end.More particularly, when the coolant entrance port is formed at the upper end of left surface of casing component, the coolant outlet port can be formed at casing component right flank the lower end or can be formed at the lower end of opposite flank so that the coolant outlet port is parallel to each other.At this, can change the side that casing component is formed with coolant entrance port and coolant outlet port according to the direction that battery module tilts.For example, when coolant entrance port and coolant outlet port all are formed at the left surface of casing component, battery module fixed so that the upper end of battery module tilts towards the left surface of battery module.
Preferably, cooling fan (hair-dryer) is fixed on the coolant outlet port, is used to produce the necessary actuating force of ANALYSIS OF COOLANT FLOW.
Preferably, the angle of one 1 to 40 degree of battery module inclination.When the inclination angle of battery module too hour, the size of coolant entrance port reduces, and therefore is difficult to increase the amount of coolant that time per unit is introduced.On the other hand, when the inclination angle of battery module is too big, potentially unstable when externally collision imposes on battery module that is in tilted layout of battery module, this is not preferred.More preferably, the angle of one 1.5 to 15 degree of battery module inclination.
In a preferred embodiment, battery module is fixed on the framework with a pair of support portion, and this support portion projects upwards the opposite side of while space with support cells module lower end; And casing component is coupled to framework with the sealed cell module, so that except that the rear surface of battery module, and casing component some or all in the outer surface of battery module.
Preferably, passed through at cooling agent on the direction of coolant entrance port introducing, the support portion is vertically outstanding so that the opposite side of battery module can be supported by this support portion respectively.Especially, the support portion is along projecting upwards continuously on each unit module direction that the unit module level is piled up in vertical the setting on a side, so that the opposite side of the unit module lower end of support portion support stack.
Framework can be formed the shape that this framework wherein can combine with the vehicle inside structure.For example, comprise that when being used to alleviate the bending that is applied to the external impact on the vehicle, the support portion of framework can be installed on the protuberance of vehicle interior structure when the vehicle inside structure.Its details is disclosed in the 2005-99871 korean patent application of submitting to the applicant's name.Therefore the disclosure of above-mentioned patent application is all included in this specification by reference.
As an embodiment of the method for a predetermined angular that the upper end face of casing component and battery module and rear surface are tilted, can change the projecting height of the support portion of framework, so that the support portion has different height.
Description of drawings
Above-mentioned and other purposes, feature and other advantages of the present invention will obtain understanding more clearly from the detailed description below in conjunction with accompanying drawing, wherein:
Fig. 1 shows the stereogram of conventional cooling system;
Fig. 2 shows the stereogram according to the battery module of the preferred embodiments of the invention;
Fig. 3 shows the stereogram according to the battery pack of the preferred embodiments of the invention; And
Fig. 4 is the main perspective view of Fig. 3.
The explanation of main reference mark in the＜accompanying drawing 〉
100: battery pack 10: unit module
20: battery module 30: framework
40: casing component
Embodiment
Now, explain the preferred embodiments of the invention with reference to the accompanying drawings.Yet, should be noted that the restriction of the embodiment that scope of the present invention is not illustrated.
Fig. 3 shows the stereogram according to the battery pack of the preferred embodiments of the invention, and Fig. 4 is the main perspective view of Fig. 3.
Referring to these figure, battery pack 100 comprises: battery module 20, and this battery module constitutes with such structure: a plurality of unit modules 10 are electrically connected mutually so that unit module 10 levels are piled up, and each unit module 10 is erect on a side vertically simultaneously; Framework 30 has a pair of support portion 33 and 34, and this support portion projects upwards, and the space is with the opposite side of the lower end of support cells module 20 simultaneously; And casing component 40, have coolant entrance port 45 that forms in the upper end of its left surface and the coolant outlet port (not shown) that is parallel to coolant entrance port 45 that forms in the lower end of its right flank.Casing component 40 is coupled to framework 30 so that casing component 40 centers on battery module 20.
Because this gives prominence to different height with 34 from framework 30 to support portion 33, so battery module 20 is towards coolant entrance port 45 inclination certain angles.Therefore, the gap that is limited between the upper end face 21 of casing component 40 and battery module 20 tilts, and the gap that is limited between the rear surface 22 of casing component 40 and battery module 20 tilts, thereby coolant flow passage is formed naturally by inclination.
The cooling agent of introducing by the coolant entrance port is along the gap that is limited between each unit module 10, promptly, along vertically flow channel 26 is mobile, to discharge by coolant outlet port (not shown) then, this unit module is arranged in parallel with the direction of introducing cooling agent.Therefore, when cooling agent was introduced vertical flow channel 26, the big flow resistance that occurs in the structure of Fig. 1 did not occur, so the cooling effectiveness of battery pack has improved.Therefore, as shown in Figure 3, cooling agent is along the gently sloping surface and vertically flow channel is mobile.
In addition, because coolant entrance port 45 is formed at the upper end of casing component 40 left surfaces and is parallel to vertical flow channel 26, so coolant entrance port 45 and the distance of each vertical flow channel between coolant entrance port 45 part A farthest are by the length restriction of each unit module 10.Therefore, can reduce the even property of inhomogeneous cooling greatly, the increase that the even property of this inhomogeneous cooling is the distance between coolant entrance port 45 part farthest by coolant entrance port 45 and each vertical flow channel is caused.
Though disclose the preferred embodiments of the invention for explanatory purpose, but those of ordinary skill in the art should understand, the present invention can carry out various changes, interpolation and replacement, and does not break away from disclosed scope and spirit of the present invention in appending claims.
Industrial applicibility
It is evident that from above-mentioned explanation battery pack according to the present invention is with such structure structure Become: battery module is fixed in the casing component predetermined angular so that battery module tilts, from And in the gap that between the upper end face of casing component and battery module, limits and at shell Formed the stream of natural inclination in the gap that limits between the rear surface of member and battery module Moving passage. Therefore, battery pack according to the present invention has cramped construction, not because of cooling structure And increase it highly. In addition, the gap between unit module (vertically flow channel) is with flat Row is arranged in the direction of introducing cooling agent. Therefore, effectively realized cooling agent is fed to electricity The pond module. In addition, coolant entrance port and each vertical flow channel are from the coolant entrance end Distance between the mouth part farthest is by the length restriction of each unit module. Therefore, be fed to The amount of coolant of the each several part of battery module is uniformly, and has therefore improved the cold of battery pack But uniformity. In addition, can be changed according to battery pack of the present invention, so that form battery pack The shape of lower frame consistent with the internal structure of vehicle. Therefore, according to electricity of the present invention Chi Zugeng stably is fixed in the vehicle.
Claims (9)
1. medium-sized or large-sized battery pack comprises:
Battery module, this battery module comprises a plurality of unit modules, and these unit modules level when each unit module is erect on a side is vertically piled up, and this battery module is fixed in the seal cavity of casing component, wherein
This casing component is provided with the coolant entrance port and is provided with the coolant outlet port in the upper end or the lower end of its opposite side in the upper end or the lower end of one side,
This battery module is fixed in this casing component so that the upper end face of this battery module or rear surface tilt to this coolant entrance port with a predetermined angular, make the cooling agent of being introduced by this coolant entrance port parallel pass through this unit module vertically and be discharged to this opposite side then by this with this battery module, and
Gap (vertically flow channel), this gap is limited between this unit module at the upper end face or the rear surface place of the inclination of this battery module, and is positioned to and is parallel to the direction of introducing cooling agent.
2. battery pack according to claim 1, wherein each unit module is a battery cell that can be recharged and discharge or the combination of two or more battery cells.
3. battery pack according to claim 1, wherein this coolant entrance port is formed at this long limit medium-sized or large-sized battery module, and this medium-sized or large-sized battery module comprises a plurality of unit modules that pile up.
4. battery pack according to claim 3, wherein
When the length of each unit module is a, the width of each unit module is b, and the thickness of each unit module is when being c,
This battery module constitutes to number x by the stackable unit module, so that the length on limit satisfies with lower inequality: a＜c * x, and this coolant entrance port is formed at the position on corresponding c * x limit in this casing component.
5. battery pack according to claim 1 also comprises:
Cooling fan (hair-dryer) is fixed on this coolant outlet port, is used to produce the necessary actuating force of ANALYSIS OF COOLANT FLOW.
6. battery pack according to claim 1, the wherein angle of one 1 to 40 degree of this battery module inclination.
7. battery pack according to claim 1, wherein this coolant entrance port is formed at the also upper end-face edge of adjacent this casing component of a side with the shape of a series of through holes, and this coolant outlet port is formed at least one side of this casing component lower end.
8. battery pack according to claim 7, wherein this battery module is fixed on the framework with a pair of support portion, this support portion projects upwards the while space to support the opposite side of this battery module lower end, vertically give prominence on by the direction of coolant entrance port introducing at cooling agent this support portion, and this casing component is coupled to this framework to seal this battery module.
9. battery pack according to claim 8, wherein this framework is formed the shape that this framework wherein can combine with the vehicle inside structure.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020060018951A KR100948003B1 (en) | 2006-02-27 | 2006-02-27 | Middle and Large-Sized Battery Pack of Excellent Cooling Efficiency |
| KR1020060018951 | 2006-02-27 | ||
| KR10-2006-0018951 | 2006-02-27 | ||
| PCT/KR2007/000962 WO2007097594A1 (en) | 2006-02-27 | 2007-02-24 | Middle and large-sized battery pack of excellent cooling efficiency |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101401228A true CN101401228A (en) | 2009-04-01 |
| CN101401228B CN101401228B (en) | 2012-08-29 |
Family
ID=38437592
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007800086354A Active CN101401228B (en) | 2006-02-27 | 2007-02-24 | Middle and large-sized battery pack of excellent cooling efficiency |
Country Status (5)
| Country | Link |
|---|---|
| JP (2) | JP5718549B2 (en) |
| KR (1) | KR100948003B1 (en) |
| CN (1) | CN101401228B (en) |
| TW (1) | TWI340490B (en) |
| WO (1) | WO2007097594A1 (en) |
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| CN103069642A (en) * | 2010-08-12 | 2013-04-24 | 锂电池科技有限公司 | Thermally conductive plate having a network of flow channels, method for transport of heat and electrochemical energy store |
| CN103996805A (en) * | 2014-05-23 | 2014-08-20 | 河南速达电动汽车科技有限公司 | Aluminum alloy battery box |
| CN106058366A (en) * | 2010-11-18 | 2016-10-26 | 株式会社Lg化学 | Battery pack having superior cooling efficiency |
| CN107258027A (en) * | 2015-07-30 | 2017-10-17 | 株式会社Lg 化学 | Battery pack |
| CN108539328A (en) * | 2018-06-13 | 2018-09-14 | 安徽省宁国市天成电气有限公司 | A kind of series resistance silk liquid heater |
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| CN111697166A (en) * | 2019-03-12 | 2020-09-22 | Sk新技术株式会社 | Pouch type secondary battery and battery module including the same |
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| CN102106019B (en) * | 2008-07-26 | 2013-10-16 | 株式会社Lg化学 | Medium or large battery pack case with excellent cooling efficiency |
| KR101338275B1 (en) | 2010-11-18 | 2013-12-06 | 주식회사 엘지화학 | Battery Pack of Excellent Cooling Efficiency |
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- 2007-02-24 CN CN2007800086354A patent/CN101401228B/en active Active
- 2007-02-24 WO PCT/KR2007/000962 patent/WO2007097594A1/en active Application Filing
- 2007-02-24 JP JP2008556256A patent/JP5718549B2/en active Active
- 2007-02-26 TW TW096106416A patent/TWI340490B/en active
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2014
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| CN106058366B (en) * | 2010-11-18 | 2019-08-09 | 株式会社Lg化学 | Battery pack with excellent cooling efficiency |
| CN106058366A (en) * | 2010-11-18 | 2016-10-26 | 株式会社Lg化学 | Battery pack having superior cooling efficiency |
| CN103996805A (en) * | 2014-05-23 | 2014-08-20 | 河南速达电动汽车科技有限公司 | Aluminum alloy battery box |
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Also Published As
| Publication number | Publication date |
|---|---|
| TWI340490B (en) | 2011-04-11 |
| KR20070088994A (en) | 2007-08-30 |
| KR100948003B1 (en) | 2010-03-18 |
| CN101401228B (en) | 2012-08-29 |
| WO2007097594A1 (en) | 2007-08-30 |
| JP5718549B2 (en) | 2015-05-13 |
| TW200805736A (en) | 2008-01-16 |
| JP2015111578A (en) | 2015-06-18 |
| JP2009528652A (en) | 2009-08-06 |
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Effective date of registration: 20211215 Address after: Seoul, South Kerean Patentee after: LG Energy Solution Address before: Seoul, South Kerean Patentee before: LG CHEM, Ltd. |