CN206332137U - A kind of battery case of use cylindrical battery monomer - Google Patents
A kind of battery case of use cylindrical battery monomer Download PDFInfo
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- CN206332137U CN206332137U CN201621444728.4U CN201621444728U CN206332137U CN 206332137 U CN206332137 U CN 206332137U CN 201621444728 U CN201621444728 U CN 201621444728U CN 206332137 U CN206332137 U CN 206332137U
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- 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
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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- Y02E60/10—Energy storage using batteries
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Abstract
The utility model is related to a kind of battery case of use cylindrical battery monomer, including the casing provided with some battery modules, any battery module includes the first framework and second framework coordinated, being set in first framework and second framework includes the array of correspondence through hole, and the edge of the first framework and second framework is higher than plane where array；The cylindrical battery monomer for coordinating the through hole of the through hole cooperation, negative pole end and the second framework that set positive terminal and the first framework to coordinate between the corresponding through hole of first framework and second framework；The heat conducting element for being connected to radiator or calandria is set on cylindrical battery monomer.Cylindrical battery monomer and radiator or calandria are equipped with to carry out natural cooling, air blast cooling, cold liquid, heating film heating, PTC heating and liquid heat etc. by the utility model according to actual conditions using different thermally conductive pathways, with preferable heat management, the complexity of heat management is low, battery modules weight is small, low cost, it is safe.
Description
Technical field
The utility model belongs to for the method or apparatus that direct transformation chemical energy is electric energy, such as the technology neck of battery pack
Domain, it is more particularly to a kind of heat management heat-transfer path to be determined according to the actual selection situation of cylindrical battery monomer and heat management is excellent
The battery case of different use cylindrical battery monomer.
Background technology
Under the support of country and the favourable of market, power lithium-ion battery industry development is very fast, especially big
The fields such as bar, passenger car and logistic car, the utilization rate of power lithium-ion battery increases extremely rapid.
Cylindrical battery monomer as lithium ion battery one kind, because of its special geometry and less capacity, in groups
When generally require by substantial amounts of battery cell carry out connection in series-parallel, demand of the electrokinetic cell system to electric current and voltage could be met.
It is clear that it is the challenge to battery system heat management that this burst mode is incident.
Lifting with consumer to requirements such as Dynamic Performance of Electric Vehicle and rapid charging performance, power lithium-ion battery makes
Heating problem during is increasingly severe, especially the southern area in summer because battery overheat caused by failure and
Accident occurs again and again.The heating of battery make it that battery temperature is raised, and then reduces battery life, or even occurs uncertain
It is dangerous.
By some research and development, the heat management side of some battery modules constituted for cylindrical battery monomer is developed in the industry
The cold battery system of liquid of method, such as well-known Tesla, it is based on using the big face of the cylinder of cylindrical battery monomer as main thermally conductive pathways
It is designed, however, this design needs to carry out heat management to the face of cylinder of each cylindrical battery monomer so that heat management system
System is extremely complex, and the design and manufacture of heat management system are sufficiently complex, and cost is also higher；Also have whole cylindrical battery monomer
It is fully immersed in casting glue, the weight of module can be not only significantly increased in this design, and the decrease of power density can be also added to
This, rational workaround is taken while not spread to the thermal runaways of issuable battery modules.
Utility model content
The technical problem that the utility model is solved is, in the prior art, for the battery modules of cylindrical battery monomer composition
Thermal management algorithm can not take into account advantage of both convenience and performance, or caused by need to each cylindrical battery list
The face of cylinder of body all carries out heat management so that heat management system is extremely complex, and the design and manufacture of heat management system are sufficiently complex,
Cost is also higher, or whole cylindrical battery monomer is fully immersed in casting glue, module weight is significantly increased, energy is reduced
Metric density, can also increase cost, and rational workaround is taken while not spread to the thermal runaways of issuable battery modules
The problem of, and then there is provided a kind of battery case for the use cylindrical battery monomer for optimizing structure.
The technical scheme that the utility model is used is, a kind of battery case of use cylindrical battery monomer, the battery case
Including casing, some battery modules are provided with casing, any battery module includes the first framework and second being equipped with
Framework, provided with including the array of corresponding through hole in corresponding first framework and second framework, first framework and the
The edge of two frameworks is higher than plane where array；Coordinate between the corresponding through hole of first framework and second framework and be provided with cylinder
Battery cell, the positive terminal of the cylindrical battery monomer and the through hole of first framework are equipped with, the cylindrical battery list
The negative pole end of body and the through hole of the second framework are equipped with；The cylindrical battery monomer is provided with heat conducting element, described to lead
Thermal element is connected to radiator or calandria.
Preferably, the heat conducting element is to be arranged on leading between the through hole of the negative pole end of cylindrical battery monomer and second framework
Hot glue layer；Or the heat conducting element is to be arranged on the thermally conductive sheet in the middle part of cylindrical battery monomer.
Preferably, in any battery module all cylindrical battery monomers are in parallel, and some battery modules are sequentially
Series connection.
Preferably, the positive pole of all cylindrical battery monomers in any battery module is soldered to the first metallic plate, institute
The negative pole for stating all cylindrical battery monomers in any battery module is soldered on the second metallic plate, any first metallic plate
Provided with electrode, any second metallic plate is provided with electrode, and some battery modules are sequentially with the of first battery modules
Electrode on one metallic plate is connected to the electrode on the second metallic plate of rear battery modules.
Preferably, any battery module includes some battery cells group, and it is equal that the battery cell group includes quantity
Cylindrical battery monomer；All cylindrical battery monomers in any battery haplometrotic colony are in parallel, some battery cell groups
It is in sequential series；Some battery modules are in sequential series.
Preferably, the positive pole of all cylindrical battery monomers is soldered to the 3rd metallic plate, institute in any battery haplometrotic colony
The negative pole for stating all cylindrical battery monomers in any battery haplometrotic colony is soldered on the 4th metallic plate, any 3rd metallic plate
Provided with electrode, any 4th metallic plate is provided with electrode, and some battery cell groups are sequentially with first battery cell group
The 3rd metallic plate on electrode be connected to rear battery cell group the 4th metallic plate on electrode, some battery modules
Sequentially it is connected to the electrode on the 3rd metallic plate of last battery cell group of first battery modules in rear battery modules
First battery cell group the 4th metallic plate on electrode.
Preferably, first framework is dorsad distributed with some first boss and second boss on the side of through hole；Institute
The height for stating some first boss is equal, and the height of some second boss is equal, and the height of the second boss is more than the
The height of one boss；Being sticked in some first boss has heat-insulated protecting against shock layer, and the heat-insulated protecting against shock layer is provided with some
Positioning hole, the upper end of some second boss is fitted setting with the positioning hole, the top surface of some second boss with
The surface of the heat-insulated protecting against shock layer is flushed；The second framework is dorsad distributed with the side of through hole some highly equal
3rd boss.
Preferably, the surrounding of first framework and second framework is distributed with steam vent；Case outside the battery modules
Internal side is provided with explosion-proof valve.
The utility model provides a kind of battery case for the use cylindrical battery monomer for optimizing structure, by battery case case
Some battery modules are set in body, and set cylinder electric in corresponding through hole between the first framework and second framework of battery modules
Pond monomer, radiator or calandria are connected to according to the thermally conductive pathways of selection by cylindrical battery monomer by corresponding heat conducting element
Carry out heat management.The utility model according to actual conditions, using different thermally conductive pathways by cylindrical battery monomer and radiator or
Calandria is equipped with to carry out natural cooling, cold air blast cooling, liquid, heating film heating, PTC heating and liquid heat etc., with compared with
Good heat management, the complexity of heat management is low, and battery modules weight is small, low cost, safe.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the utility model using axially as the blast figure structure schematic representation of battery module during thermally conductive pathways；
Fig. 3 is the utility model using radially as the blast figure structure schematic representation of battery module during thermally conductive pathways；
Fig. 4 is the section view figure structure schematic representation connected between the battery module of embodiment 1 in the utility model；
Fig. 5 is the structural representation connected between the battery module of embodiment 2 in the utility model；
Broken section figure structure schematic representation when Fig. 6 is oppositely arranged for the first framework of battery module in the utility model；
Broken section figure structure schematic representation when Fig. 7 is oppositely arranged for the second framework of battery module in the utility model.
Embodiment
The utility model is described in further detail with reference to embodiment, but protection domain of the present utility model is simultaneously
Not limited to this.
The utility model is related to a kind of battery of the use cylindrical battery monomer 1 using described thermally conductive pathways system of selection
Case, the battery case includes being provided with some battery modules 2 in casing 4, casing 4, and any battery module 2 includes being equipped with
The first framework 5 and second framework 6, provided with including corresponding through hole 7 in corresponding first framework 5 and second framework 6
Array, the edge of first framework 5 and second framework 6 is higher than plane where array；First framework 5 and second framework 6
Corresponding through hole 7 between coordinate and be provided with cylindrical battery monomer 1, the positive terminal of the cylindrical battery monomer 1 and first framework 5
Through hole 7 be equipped with, the negative pole end of the cylindrical battery monomer 1 and the through hole 7 of the second framework 6 are equipped with；It is described
Cylindrical battery monomer 1 is provided with heat conducting element 8, and the heat conducting element 8 is connected to radiator or calandria 3.
In the utility model, homework of supplying power is completed by setting some battery modules 2 in battery box body 4, in reality
Setting up procedure in, battery modules 2 can keep flat, place vertically, side by side or be piled into a module group and set casing 4 to complete electricity
The whole installation of pond case.Generally, two battery modules 2 are at least included in the casing 4 of battery case, certainly in need
In the case of can expand more battery modules 2.
In the utility model, cylinder is set in corresponding through hole 7 between the first framework 5 and second framework 6 of battery modules 2
Battery cell 1, for the ease of stating, by the positive terminal of cylindrical battery monomer 1 and the through hole 7 of the first framework 5 in the utility model
Be equipped with, the through hole 7 of negative pole end and second framework 6 is equipped with, according to the thermally conductive pathways of selection by cylindrical battery monomer 1 with
Different heat conducting elements 8 are equipped with, and then are connected to radiator or the progress heat management of calandria 3.
In the utility model, the edge of the first framework 5 and second framework 6 is higher than plane where array, and through hole 7 is in the first frame
Set on body 5 and second framework 6 into array, while generally, the depth of through hole 7 is shallower, the first framework 5 and second framework
The setting purpose of corresponding through hole 7 is primarily to ensure the positioning of cylindrical battery monomer 1 and set heat conducting element 8 on 6, so
The bottom of through hole 7 is typically provided annular lamina and ensures that while position of the cylindrical battery monomer 1 in it is stable heat conducting element can be set
8。
In the utility model, it is straight that radiator 3 includes natural cooling device, air blast cooling device, liquid cooling apparatus and refrigerant
Connect cooling device etc., calandria 3 includes heating membrane structure, PTC structures and liquid thermal etc., herein radiator or calandria 3
Selection utility model point not of the present utility model, those skilled in the art can according to the understanding to the utility model technology,
Voluntarily set according to the actual requirements.
The utility model have selected suitable thermally conductive pathways according to the actual conditions of cylindrical battery monomer 1, and can be according to reality
Cylindrical battery monomer 1, is equipped with cold to carry out nature by border situation using this thermally conductive pathways with radiator or calandria 3
But, air blast cooling, cold liquid, heating film heating, PTC heating and liquid heat etc., with preferable heat management, the complexity of heat management
Low, the weight of battery modules 2 is small, and low cost is safe.
The heat conducting element 8 is the heat conduction being arranged between the through hole 7 of the negative pole end of cylindrical battery monomer 1 and second framework 6
Glue-line；Or the heat conducting element 8 is the thermally conductive sheet for being arranged on the middle part of cylindrical battery monomer 1.
, can be by heat conducting element 8 when selecting the axial direction of cylindrical battery monomer 1 as thermally conductive pathways in the utility model
Heat-conducting glue layer is set to, heat-conducting glue layer is arranged between the through hole 7 of the negative pole end of cylindrical battery monomer 1 and second framework 6；Work as selection
When the radial direction of cylindrical battery monomer 1 is thermally conductive pathways, because the edge of the first framework 5 and second framework 6 is flat higher than where array
Face, it is clear that, cylindrical battery monomer 1 has one section to be not in the through hole 7 of the first framework 5 or second framework 6, and because with
The radial direction of cylindrical battery monomer 1 is concentrated mainly on cylindrical battery monomer 1 interlude when being thermally conductive pathways carries out heat management, therefore can
To set thermally conductive sheet at the middle part of cylindrical battery monomer 1；No matter which kind of more than selection selection mode, final heat-conducting glue layer or heat conduction
Piece is connected to radiator or calandria 3 carries out heat management.
In the utility model, cylindrical battery monomer 1 and battery modules 2 are connected with least two kinds of embodiments.
Embodiment 1：
All cylindrical battery monomers 1 in any battery module 2 are in parallel, and some battery modules 2 are in sequential series.
The positive pole of all cylindrical battery monomers 1 in any battery module 2 is soldered to the first metallic plate 9, described
The negative pole of all cylindrical battery monomers 1 in one battery modules 2 is soldered to the second metallic plate 10, any first metallic plate 9
Electrode 11 is provided with, any second metallic plate 10 is provided with electrode 11, and some battery modules 2 are sequentially with first battery
Electrode 11 on first metallic plate 9 of module 2 is connected to the electrode 11 on the second metallic plate 10 of rear battery modules 2.
In the present embodiment, after all parallel connections of cylindrical battery monomer 1 in battery modules 2, all cylindrical battery monomers 1 are just
Pole is in the same side, negative pole and is in the same side, i.e., whole battery modules 2 can weld first in the positive pole of cylindrical battery monomer 1
Metallic plate 9 welds the second metallic plate 10 as tablet, by output as output board in the negative pole of cylindrical battery monomer 1
Electrode 11 is set on plate, electrode 11 is set on tablet, you can so that several battery modules 2 are in sequential series, is completed
The connection of the internal cell module 2 of battery case；Conversely, constant in the charging stage order of connection, the sense of current changes.
Embodiment 2：
Any battery module 2 includes some battery cells group 12, and it is equal that the battery cell group 12 includes quantity
Cylindrical battery monomer 1；All cylindrical battery monomers 1 in any battery haplometrotic colony 12 are in parallel, some battery cells
Group 12 is in sequential series；Some battery modules 2 are in sequential series.
The positive pole of all cylindrical battery monomers 1 is soldered to the 3rd metallic plate 13 in any battery haplometrotic colony 12, described
The negative pole of all cylindrical battery monomers 1 is soldered to the 4th metallic plate 14, any 3rd metal in any battery haplometrotic colony 12
Plate 13 is provided with electrode 11, and any 4th metallic plate 14 is provided with electrode 11, some battery cells group 12 sequentially with
Electrode 11 on the 3rd metallic plate 13 of first battery cell group 12 is connected to the 4th metallic plate 14 in rear battery cell group 12
On electrode 11, some battery modules 2 are sequentially with the 3rd gold medal of last battery cells of first battery modules 2 group 12
Electrode 11 on category plate 13 is connected to the electrode on the 4th metallic plate 14 of first battery cell group 12 of rear battery modules 2
11。
In the present embodiment, all cylindrical battery monomers 1 in any battery module 2 are divided into some equal portions, each equal portions
Some cylindrical battery monomers 1 between and be unified into battery cell group 12, it is suitable between battery cell group 12 and battery cell group 12
Secondary series connection, last battery modules 2 are also in sequential series.
In the present embodiment, the 3rd metal is also welded using the positive pole of the cylindrical battery monomer 1 in any battery cell group 12
Plate 13 welds the 4th metallic plate 14 as defeated as output board in the negative pole of the cylindrical battery monomer 1 of any battery cell group 12
Enter plate, by output board set electrode 11, on tablet set electrode 11, you can with by several battery cells group 12
It is in sequential series, eventually through the head and the tail battery cells group 12 of series connection adjacent cell module 2 by sequential series of battery modules 2
Come, complete the connection of the internal cell module 2 of battery case；Conversely, constant in the charging stage order of connection, the sense of current, which changes, is
Can.
In the utility model, it is contemplated that the reason for crossing welding, above-mentioned first metallic plate 9, the second metallic plate 10, the 3rd metal
The material of the metallic plate 14 of plate 13 and the 4th is generally nickel or steel nickel plating, and thickness can not be too big, generally less than 0.3mm；Consider
The problem of electric current needed for battery case is larger, therefore electrode is typically completed using conducting strip, can generally select copper product,
The resistivity of copper is about 0.2~0.25 times of nickel, and can be easy to as the copper sheet of electrode 11 with relatively thick, wider by big
Electric current.
First framework 5 is dorsad distributed with some first boss 15 and second boss 16 on the side of through hole 7；Institute
The height for stating some first boss 15 is equal, and the height of some second boss 16 is equal, the height of the second boss 16
More than the height of first boss 15；Being sticked in some first boss 15 has heat-insulated protecting against shock layer 17, the heat-insulated protecting against shock
Layer 17 is provided with some positioning holes, and the upper ends of some second boss 16 is fitted setting with the positioning hole, described some
The top surface of second boss 16 is flushed with the surface of the heat-insulated protecting against shock layer 17；The second framework 6 is dorsad on the side of through hole 7
It is distributed with some highly equal the 3rd boss 18.
In the utility model, in order to prevent that battery thermal runaway from spreading between battery modules 2, typically in battery modules 2
Install one piece of heat-insulated protecting against shock layer 17 in first framework 5 additional, stop the heat produced by the thermal runaway of cylindrical battery monomer 1 and punching
Hit, heat-insulated protecting against shock layer 17 is using high temperature resistant, high voltage bearing material, to prevent that the gas of thermal runaway from flinging adjacent cell module
2, cause the thermal runaway of adjacent cell module 2.Generally, heat-insulated protecting against shock layer 17 is mica sheet.
In the utility model, in order to ensure heat-insulated effect, if therefore being set in the first framework 5 dorsad side of through hole 7
Dry first boss 15, first boss 15 can be arranged in the first framework 5 between any four through hole 7, need to only ensure normal branch
Heat-insulated protecting against shock layer 17 is supportted, the height of some first boss 15 is equal, this causes heat-insulated protecting against shock layer 17 and battery modules 2
There is a uniform gap between inside, it is ensured that it can fully play a part of cut-off, because heat can be entered by solid
Row transmission, after this gap is constituted using some first boss 15, can fully play heat-insulated effect.In actual embodiment
In, when 2 positive poles of battery modules are relative, the heat-insulated protecting against shock of this battery modules 2 and adjacent cell module 2 layer 17 can be passed through
The amount of heat cut-off for producing the thermal runaway of cylindrical battery monomer 1 of adjacent cell module 2 with gap this battery modules 2 it
Outside, or by the thermal runaway of cylindrical battery monomer 1 of this battery modules 2 amount of heat produced separates within this battery modules 2, so
Discharged afterwards by steam vent 19 outside this battery modules 2, to avoid thermal runaway in any case from spreading.
In the utility model, battery modules 2 would generally be put together in groups, module group be formed, in order to ensure battery mould
Group 2 and radiator or the good contact of calandria 3, it will usually battery modules 2 are tightened together by bolt or cassette tape, tightly
Gu when battery modules 2 between can compressive, however, most of radiator or calandria 3 can not bear excessive power, therefore also need
To be provided for protecting the He of second boss 16 of thermal management assemblies in the first framework 5 and the second framework 6 dorsad side of through hole 7
3rd boss 18, will not be to heat-insulated erosion control when the boss 18 of second boss 16 or the 3rd of adjacent battery modules 2 is correspondingly arranged
Hit layer 17 or radiator or calandria 3 applies destructive power, it is ensured that can be right safely between two adjacent battery modules 2
Connect, side ensures that heat-insulated protecting against shock layer 17 is in normal condition, and opposite side can be used for placing and protect radiator or calandria
3。
In the utility model, battery modules 2 first form a group side by side or when piling up placement by two battery modules 2,
3rd boss 18 of the second framework 6 of two battery modules 2 is equipped with, it is therefore an objective to when setting radiator or calandria 3, will
Radiator or calandria 3 are arranged between the 3rd boss 18 of two battery modules 2, to reach that two battery modules 2 share one
The purpose of individual radiator or calandria 3, saves cost and space.The group of two battery modules 2 formation is side by side or when piling up, the
The second boss 16 of one framework 5 is equipped with, between such two adjacent battery modules 2 the relative region of positive pole have two layers it is heat-insulated anti-
The lamellar spacing of shock ply 17 and two, enhances the effect that anti-thermal runaway spreads；Also exist in certain the utility model between group completely
Arranged side by side and any boss all take less than side situation arranged side by side, such a situation is not in the range of the discussion of this structure.
In the utility model, second boss 16 passes through the positioning hole of heat-insulated protecting against shock layer 17, and the top surface of second boss 16
Upper surface with heat-insulated protecting against shock layer 17 is concordant, it is ensured that the heat-insulated protecting against shock layer 17 between adjacent battery modules 2 can be pasted
Close, the control spread for thermal runaway is not influenceed.Generally, second boss 16 is arranged on first framework 5 dorsad through hole 7
The edge and middle part of side, play a part of support.
In the utility model, the 3rd boss 18 is arranged on second framework 6 dorsad on the side of through hole 7, when selection is axially led
During hot path, because the thickness of the presence of heat-conducting glue layer, therefore the 3rd boss 18 should be greater than the thickness of heat-conducting glue layer, it is ensured that adjacent
It can be fitted between battery modules 2 at the 3rd boss 18, the space fitted and constituted by the 3rd boss 18 then can be used for placing
Radiator or calandria 3.
The surrounding of first framework 5 and second framework 6 is distributed with steam vent 19；Casing 4 outside the battery modules 2
Inner side is provided with explosion-proof valve 20.
In the utility model, in order to avoid because the gas that the thermal runaway of cylindrical battery monomer 1 is produced is collected at battery modules 2
It is internal and then cause battery modules 2 to be exploded, the surrounding of the first framework 5 and second framework 6 is typically set into steam vent 19, integrally engraved
Sky, for the gas of thermal runaway to be discharged outside battery modules 2.
In the utility model, when the gas that thermal runaway is produced by the steam vent 19 of battery modules 2 is discharged to battery modules 2
It after outer, can gather inside the casing 4 of battery case, therefore explosion-proof valve 20 is installed in the casing 4 outside battery modules 2, when casing 4
After internal pressure is gathered to a certain extent, explosion-proof valve 20 is opened, and gas is discharged outside casing 4.
Thermally conductive pathways system of selection of the present utility model comprises the following steps.
Step 1：Determine the height l, diameter d, axial thermal conductivity coefficient λ of cylindrical battery monomer 1AWith radial direction heat conduction coefficient lambdaR。
Step 2：The thermally conductive pathways of the cylindrical battery monomer 1 are included axially and radially, the axle of setting cylindrical battery monomer 1
It is α to the thermal resistance ratio of thermal resistance and radial direction thermal resistance.
In the utility model, step 1 and 2 fundamental characteristics for being determined cylindrical battery monomer 1, cylindrical battery monomer 1 are led
Hot path is including radial and axial, in the design of battery case is carried out using different cylindrical battery monomers 1, due to cylindrical battery
The height l of monomer 1, diameter d, axial thermal conductivity coefficient λAWith radial direction heat conduction coefficient lambdaRDifference, radial and axial thermal resistance is than α
Different, i.e. the thermally conductive pathways of selection are also variant.
According to Fourier heat conduction lawIt is several with difference scheme replacement local derviation, obtain
That is thermal resistanceObtain the axial thermal resistance of cylindrical battery monomer 1Radial direction thermal resistanceWherein,For heat flow, △ T are the temperature difference, and A is heat-conducting area, and △ x are the length of thermally conductive pathways.
In the utility model, had according to Fourier heat conduction lawDerive to obtain thermal resistance
It is exactly from center to two when two end faces of cylindrical battery monomer 1 are all used to heat conduction in the utility model
End face conducts heat, and heat transfer distances areAnd be equally from axle center to circumference when the face of cylinder of cylindrical battery monomer 1 is used for heat conduction
Face is conducted heat, and heat transfer distances are
Step 4：Obtain the axial thermal resistance and radial direction thermal resistance ratio of cylindrical battery monomer 1：
In the utility model, bring the hot physical property of foregoing inside lithium ion cell into, including cylindrical battery monomer 1 height l,
Diameter d, axial thermal conductivity coefficient λAWith radial direction heat conduction coefficient lambdaR, obtain the ratio between axial thermal resistance and radial direction thermal resistance of cylindrical battery monomer 1
α。
Step 5：Work as α<When 1, the axial direction of selection cylindrical battery monomer 1 is used as thermally conductive pathways；Work as α>When 1, selection cylinder electricity
The radial direction of pond monomer 1 is used as thermally conductive pathways；As α=1, selection cylindrical battery monomer 1 axially or radially as thermally conductive pathways.
In the utility model, work as α<When 1, the axial thermal resistance of cylindrical battery monomer 1 is less than radial direction thermal resistance, selects cylindrical battery
Work as α as more excellent thermally conductive pathways in the axial direction of monomer 1>When 1, the axial thermal resistance of cylindrical battery monomer 1 is more than radial direction thermal resistance, choosing
The radial direction of cylindrical battery monomer 1 is selected as more excellent thermally conductive pathways, as α=1, the axial thermal resistance of cylindrical battery monomer 1 is equal to
Radial direction thermal resistance, selection cylindrical battery monomer 1 axially or radially as thermally conductive pathways, generally, due to cylinder electricity
Pond monomer 1 can increase the difficulty that radiator or calandria 3 are set from radial direction when in battery modules 2 as thermally conductive pathways
The difficulty of heat management is spent and then is lifted, therefore as α=1, the axial direction of selection cylindrical battery monomer 1 is used as more excellent thermally conductive pathways.
In the step 4,Wherein, ε is the equivalent utilization rate of periphery of cylindrical battery monomer 1,0<ε<1, η is
The equivalent utilization rate of end face of cylindrical battery monomer 1,0<η<1.
In the utility model, due in actual operation, when selection radial direction is as thermally conductive pathways, cylindrical battery monomer
1 face of cylinder tends not to be utilized completely with the contact area of radiator or calandria 3, and is axially used as heat conduction road in selection
During footpath, heat transfer can only be gone with one end face of negative pole and negative pole some part that can be positioned is covered, be i.e. heat conduction is utilized
Be not negative pole end face it is overall, therefore actual thermal resistance than calculating process in, the periphery for introducing cylindrical battery monomer 1 is equivalent
The equivalent utilization rate η of end face of utilization rate ε and cylindrical battery monomer 1 so that operational circumstances of the result of calculation closer to reality.
In the utility model, generally, with reference to actual experience, ε can take 0.17 or slightly larger.
In the utility model, generally, with reference to actual experience, η takes 0.17 or slightly between 0 to 1, typically
Greatly.
In the utility model, illustrated by taking conventional cylindrical battery monomer 1 as an example.
In the utility model, conventional cylindrical battery monomer 1 includes 18650 lithium batteries, 32650 lithium batteries.Work as selection
When 18650 lithium batteries are cylindrical battery monomer 1, d=18mm, 1=65mm, when the side of cylindrical battery monomer 1 is completely used for passing
When hot, α=0.87, equivalent utilization rate ε=0.17 of periphery of cylindrical battery monomer 1, the equivalent profit of end face of cylindrical battery monomer 1
It is actual with rate η=0.17The axial direction of cylindrical battery monomer 1 can be selected as thermally conductive pathways；It is elected
When selecting 32650 lithium batteries for cylindrical battery monomer 1, d=32mm, 1=65mm, when the side of cylindrical battery monomer 1 is completely used for
During heat transfer, α=0.28, equivalent utilization rate ε=0.17 of periphery of cylindrical battery monomer 1, the end face of cylindrical battery monomer 1 is equivalent
Utilization rate η=0.17, it is actualTherefore the axial direction of selection cylindrical battery monomer 1 is used as thermally conductive pathways.
The utility model solves the heat management side of the battery modules 2 in the prior art, constituted for cylindrical battery monomer 1
Method can not take into account advantage of both convenience and performance, otherwise caused by need the cylinder to each cylindrical battery monomer 1
Face all carries out heat management so that heat management system is extremely complex, and the design and manufacture of heat management system are sufficiently complex, and cost also compares
It is higher, or whole cylindrical battery monomer 1 is fully immersed in casting glue, it is significantly increased module weight, the decrease of power density,
Also cost can be increased, while the thermal runaway to issuable battery modules 2 does not spread the problem of taking rational workaround,
By carrying out the comparison of axial thermal resistance and radial direction thermal resistance for currently used cylindrical battery monomer 1, it is determined that more preferably cylinder electricity
The axial direction of pond monomer 1 or radial direction are used as thermally conductive pathways；Determine after thermally conductive pathways, by setting some in battery box body 4
Battery modules 2, and between the first framework 5 and second framework 6 of battery modules 2 in corresponding through hole 7 set cylindrical battery monomer
1, cylindrical battery monomer 1 is connected to radiator by corresponding heat conducting element 8 according to the thermally conductive pathways of selection or calandria 3 enters
Row heat management.The utility model have selected suitable thermally conductive pathways according to the actual conditions of cylindrical battery monomer 1, and can be according to reality
Cylindrical battery monomer 1, is equipped with cold to carry out nature by border situation using this thermally conductive pathways with radiator or calandria 3
But, air blast cooling, cold liquid, heating film heating, PTC heating and liquid heat etc., with preferable heat management, the complexity of heat management
Low, the weight of battery modules 2 is small, and low cost is safe.
Claims (8)
1. a kind of battery case of use cylindrical battery monomer, the battery case includes being provided with some battery modules in casing, casing,
It is characterized in that：Any battery module includes the first framework and second framework being equipped with, corresponding first frame
Provided with the array of corresponding through hole is included in body and second framework, the edge of first framework and second framework is higher than array institute
In plane；Coordinate between the corresponding through hole of first framework and second framework and be provided with cylindrical battery monomer, the cylindrical battery
The positive terminal of monomer and the through hole of first framework are equipped with, the negative pole end of the cylindrical battery monomer and second frame
The through hole of body is equipped with；The cylindrical battery monomer is provided with heat conducting element, and the heat conducting element is connected to radiator or added
Hot body.
2. a kind of battery case of use cylindrical battery monomer according to claim 1, it is characterised in that：The heat conducting element
For the heat-conducting glue layer being arranged between the negative pole end of cylindrical battery monomer and the through hole of second framework；Or the heat conducting element is setting
Thermally conductive sheet in the middle part of cylindrical battery monomer.
3. a kind of battery case of use cylindrical battery monomer according to claim 1, it is characterised in that：Any battery
All cylindrical battery monomers in module are in parallel, and some battery modules are in sequential series.
4. a kind of battery case of use cylindrical battery monomer according to claim 3, it is characterised in that：Any battery
The positive pole of all cylindrical battery monomers in module is soldered to all cylinders electricity in the first metallic plate, any battery module
The negative pole of pond monomer is soldered to the second metallic plate, and any first metallic plate is provided with electrode, any second metallic plate
Electrode is provided with, some battery modules are sequentially connected in rear electricity with the electrode on the first metallic plate of first battery modules
Electrode on second metallic plate of pond module.
5. a kind of battery case of use cylindrical battery monomer according to claim 1, it is characterised in that：Any battery
Module includes some battery cells group, and the battery cell group includes the equal cylindrical battery monomer of quantity；Any battery
All cylindrical battery monomers in haplometrotic colony are in parallel, and some battery cell groups are in sequential series；Some battery modules are suitable
Secondary series connection.
6. a kind of battery case of use cylindrical battery monomer according to claim 5, it is characterised in that：Any battery
The positive pole of all cylindrical battery monomers is soldered to all cylinder electricity in the 3rd metallic plate, any battery haplometrotic colony in haplometrotic colony
The negative pole of pond monomer is soldered to the 4th metallic plate, and any 3rd metallic plate is provided with electrode, any 4th metallic plate
Electrode is provided with, some battery cell groups are sequentially connected to the electrode on the 3rd metallic plate of first battery cell group
Afterwards battery cell group the 4th metallic plate on electrode, last of some battery modules sequentially with first battery modules
Electrode on the 3rd metallic plate of battery cell group is connected to the 4th metal in first battery cell group of rear battery modules
Electrode on plate.
7. a kind of battery case of use cylindrical battery monomer according to claim 1, it is characterised in that：First framework
Dorsad some first boss and second boss are distributed with the side of through hole；The height of some first boss is equal, institute
The height for stating some second boss is equal, and the height of the second boss is more than the height of first boss；Described some first is convex
Being sticked on platform has heat-insulated protecting against shock layer, and the heat-insulated protecting against shock layer is provided with some positioning holes, some second boss it is upper
End is fitted setting with the positioning hole, and the top surface of some second boss is flushed with the surface of the heat-insulated protecting against shock layer；
The second framework is dorsad distributed with some highly equal the 3rd boss on the side of through hole.
8. a kind of battery case of use cylindrical battery monomer according to claim 1, it is characterised in that：First framework
Steam vent is distributed with the surrounding of second framework；Box inside outside the battery modules is provided with explosion-proof valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621444728.4U CN206332137U (en) | 2016-12-27 | 2016-12-27 | A kind of battery case of use cylindrical battery monomer |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621444728.4U CN206332137U (en) | 2016-12-27 | 2016-12-27 | A kind of battery case of use cylindrical battery monomer |
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| CN201621444728.4U Active CN206332137U (en) | 2016-12-27 | 2016-12-27 | A kind of battery case of use cylindrical battery monomer |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106532185A (en) * | 2016-12-27 | 2017-03-22 | 杭州捷能科技有限公司五常分公司 | Battery box adopting cylindrical battery monomer and heat conduction path selection method thereof |
| CN107507940A (en) * | 2017-08-15 | 2017-12-22 | 安徽华凯新能源科技有限公司 | Vehicular battery bag |
| CN107834129A (en) * | 2017-10-24 | 2018-03-23 | 北京工业大学 | A kind of cold bag of combined battery liquid |
| CN110514185A (en) * | 2019-09-20 | 2019-11-29 | 佛山市南海木井方工具制造有限公司 | Dry lithium electricity output of universal battery pack |
-
2016
- 2016-12-27 CN CN201621444728.4U patent/CN206332137U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106532185A (en) * | 2016-12-27 | 2017-03-22 | 杭州捷能科技有限公司五常分公司 | Battery box adopting cylindrical battery monomer and heat conduction path selection method thereof |
| CN106532185B (en) * | 2016-12-27 | 2023-09-05 | 杭州捷能科技有限公司五常分公司 | Battery box adopting cylindrical battery monomer and heat conduction path selection method thereof |
| CN107507940A (en) * | 2017-08-15 | 2017-12-22 | 安徽华凯新能源科技有限公司 | Vehicular battery bag |
| CN107834129A (en) * | 2017-10-24 | 2018-03-23 | 北京工业大学 | A kind of cold bag of combined battery liquid |
| CN107834129B (en) * | 2017-10-24 | 2023-10-13 | 北京工业大学 | Combined battery liquid cooling package |
| CN110514185A (en) * | 2019-09-20 | 2019-11-29 | 佛山市南海木井方工具制造有限公司 | Dry lithium electricity output of universal battery pack |
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