CN107369791A - Electrokinetic cell bag - Google Patents
Electrokinetic cell bag Download PDFInfo
- Publication number
- CN107369791A CN107369791A CN201610310947.1A CN201610310947A CN107369791A CN 107369791 A CN107369791 A CN 107369791A CN 201610310947 A CN201610310947 A CN 201610310947A CN 107369791 A CN107369791 A CN 107369791A
- Authority
- CN
- China
- Prior art keywords
- fin
- housing
- heat transfer
- electrokinetic cell
- flanging
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000012546 transfer Methods 0.000 claims abstract description 40
- 229920002379 silicone rubber Polymers 0.000 claims description 15
- 229910000838 Al alloy Inorganic materials 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 5
- 238000009434 installation Methods 0.000 abstract description 7
- 238000001816 cooling Methods 0.000 description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 239000003570 air Substances 0.000 description 4
- 238000005452 bending Methods 0.000 description 4
- 239000000741 silica gel Substances 0.000 description 4
- 229910002027 silica gel Inorganic materials 0.000 description 4
- 229960001866 silicon dioxide Drugs 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000000956 alloy Substances 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000012782 phase change material Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Classifications
-
- 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
- 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
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/655—Solid structures for heat exchange or heat conduction
- H01M10/6554—Rods or plates
- H01M10/6555—Rods or plates arranged between the 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
Landscapes
- 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)
Abstract
The invention discloses a kind of electrokinetic cell bag, it includes a housing, the power battery pack that multiple battery cores in the housing are formed and a heat transfer plate, fin is folded between per two neighboring battery core, there is flanging at the both ends of the fin, one end flanging of the fin contacts with the inner surface of the housing, other end flanging contacts with the heat transfer plate surface, and the heat transfer plate is fixed on the housing by fastener.The electrokinetic cell bag of the present invention, radiator structure is simple, compact, easy for installation, and radiating rate is fast, improves radiating efficiency.
Description
Technical field
The present invention relates to electrokinetic cell field, more particularly to a kind of electrokinetic cell bag.
Background technology
As environmental problem, energy crisis increasingly cause everybody attention, new-energy automobile industry obtains
Development at full speed.As the core component of new-energy automobile, electrokinetic cell bag is by its heat dispersion
Restrict.New-energy automobile frequently start and stop, accelerate power-assisted, slow down recover energy etc. during need to move
Power battery bag provides the charging and discharging currents of big multiplying power, and this can cause the rapid increase of battery temperature.Due to dynamic
The concentration of power battery is placed, if without good radiating condition, it will cause local temperature too high, warm
The problems such as spending unbalanced, battery bag temperature control, this will accelerate the aging of battery, battery performance it is fast
Speed declines, and has a strong impact on the performance of battery bag overall performance.Therefore, for the heat management of electrokinetic cell bag
Become the key factor of electrokinetic cell bag performance.
The electrokinetic cell for being presently used for new-energy automobile generally uses air-cooled, the cold even phase-change material of liquid
Take away the heat of battery pack.Current air blast cooling scheme mainly has serial and concurrent two kinds of radiating, still,
It is spaced a distance because these schemes are required to every piece of battery core, it is larger that this results in battery bag volume
Shortcoming.Although liquid is cold and the scheme radiating effect of phase-change material is preferable, once there is situation about revealing,
Easily battery short circuit is caused to destroy.So proposed using the battery bag of both schemes for sealing high
Requirement, this causes battery pack structure complex designing, and cost is very high.
In addition, there are some schemes that fin is pressed from both sides between battery pack battery core, because fin is often adopted
The aluminum alloy materials of high heat conductance are taken, therefore uses the electrokinetic cell bag of this scheme to have and uses volume
The advantages of small, perfect heat-dissipating.For example, proposed in the ZL201220244491.0 of a Mare vaporum horse application
A kind of both ends carry the fin schemes for the annular connecting portion that can wind cooling line, and this scheme can will
The heat of battery pack battery core concentrates export radiating, but the connection request of the fin and cooling line is annular
Connecting portion possesses excellent elasticity, this just the processing technology to fin, assembly technology propose it is tighter
The requirement of lattice, and the elasticity of annular connecting portion is relied solely on it is difficult to ensure that in long-term complex road condition work afterwards
Initial good contact condition can be still kept during work, so may result in fin and cooling tube
Interface resistance between road is increasing.Therefore, using reduction fin during fin scheme with being connected dress
Thermal resistance between putting becomes an important factor for improving electrokinetic cell bag hot property.
The content of the invention
The technical problem to be solved in the present invention is that the radiator structure of existing electrokinetic cell bag will to fin
Ask high, and contact of the fin with housing be not close over time, and then cause heat can not dissipate
A kind of the defects of going, there is provided new electrokinetic cell bag.
The present invention is that solve above-mentioned technical problem by following technical proposals：
The present invention provides a kind of electrokinetic cell bag, and its feature is that it includes a housing, located at the shell
The power battery pack and a heat transfer plate that internal multiple battery cores are formed, often it is folded between two neighboring battery core scattered
There is flanging at backing, the both ends of the fin, and the inner surface of one end flanging and the housing of the fin connects
Tactile, other end flanging contacts with the heat transfer plate surface, and the heat transfer plate is fixed on the housing by fastener.
In this programme, power battery pack is formed by battery core serial or parallel connection one by one, due to battery core and electricity
Fin is folded between core, so heat caused by battery core can be taken away；Moreover, heat transfer plate passes through
After fastener is fastened on housing, the fin contacted with the heat transfer plate can be forced to produce certain bending,
Tension force caused by this bending forces fin flanging to keep the energy being in close contact with housing and heat transfer plate
Power, so as to reach flash heat transfer, radiating.
It is preferred that thermal conductive silicon rubber cushion is folded between one end flanging of the fin and the inner surface of the housing,
Thermal conductive silicon rubber cushion is folded between the other end flanging of the fin and the heat transfer plate surface.
Due to the influence of mismachining tolerance, dimensional tolerance, roughness etc., fin and shell inner surface, biography
Rigid contact between hotplate surface will cause great interface resistance, thus two rigid surfaces it
Between plus last layer thermal conductive silicon rubber cushion as a cushion, on the one hand can reduce interface resistance, the opposing party
Face can also realize the electric insulation between fin and metal shell.
Therefore, the effect of thermal conductive silicon rubber cushion is：After the fin installation of multiple battery core institutes sandwiched, radiating
The flanging end of piece not necessarily to it is very neat, if it is directly and plane contact, unavoidable uneven, portion
Scattered backing produces larger thermal resistance with housing, heat transfer plate, and the capacity of heat transmission is uneven, and this programme sandwiched
Cause Elastic Contact after thermal conductive silicon rubber cushion, conduct heat more uniform.
Thermal conductive silicon rubber cushion has certain elasticity, and its thermal conductivity is 1~15W/m.K, the thickness of thermal conductive silicon rubber cushion
Degree can be selected according to mismachining tolerance, dimensional tolerance.
It is preferred that the housing is provided with some radiating fins, this pole close to the outer surface of the flanging of the fin
The earth adds natural heat dissipation surface area, substantially increases radiating effect.Electrokinetic cell bag charge and discharge process
In caused heat rely primarily on the heat transfer free convection in the outer surface and surrounding air of housing to complete,
The NATURAL CONVECTION COEFFICIENT OF HEAT for not having air blast cooling is 5~25W/ ㎡ .K.
It is preferred that the material of the fin is aluminium alloy.
It is preferred that the thickness of the fin is 0.3~1.5mm.Due to being limited by installation dimension, dissipate
The thickness of backing is limited to 0.3~1.5mm, on the one hand can reach the target for being effectively conducted heat, another
Aspect can be not required to the volume of obvious increase battery pack.
It is preferred that there is flanging at the both ends of the heat transfer plate, the flanging of the heat transfer plate, which is provided with, supplies the fastener
The mounting hole of connection.The structure of this form causes fastener that heat transfer plate flanging is fixed on into shell inner surface
After upper, there can be larger contact area, can significantly reduce the interface heat between heat transfer plate and housing
Resistance.
It is preferred that the fastener is bolt and nut.
It is preferred that the material of the housing is aluminium alloy.6063 (material trademark) aluminium alloys are to widely use
A kind of aluminum alloy materials, have excellent processing, casting character, its density is about 2.7g/cm3, than
Thermal capacitance is 900J/kg.K, thermal conductivity 201W/m.K.
On the basis of common sense in the field is met, above-mentioned each optimum condition, it can be combined, produce this hair
Bright each preferred embodiments.
The positive effect of the present invention is：
The electrokinetic cell bag of the present invention, radiator structure is simple, compact, easy for installation, and radiating rate is fast,
Improve radiating efficiency.
Brief description of the drawings
Fig. 1 is the structural representation of the electrokinetic cell bag of present pre-ferred embodiments.
Fig. 2 is the structural representation of the gelled power battery pack of sandwiched of present pre-ferred embodiments.
Fig. 3 is the structural representation of the heat transfer plate of present pre-ferred embodiments.
Embodiment
Present pre-ferred embodiments are provided below in conjunction with the accompanying drawings, to describe technical scheme in detail,
But therefore do not limit the present invention among described scope of embodiments.
As Figure 1-3, the present embodiment provides an electrokinetic cell bag, including：Housing 1, multiple battery cores
The power battery pack 2 in series or in parallel formed and heat transfer plate 5, the power battery pack 2 are located at the housing
1 inside, fin 3 is accompanied between the battery core of power battery pack 2, there is bending at the both ends of fin 3
Flanging 4, one end flanging 4 of the fin 3 contacts with the inner surface of the housing 1, the fin 3
Other end flanging 4 contacted with the surface of heat transfer plate 5, also there is the flanging 6 of bending at the both ends of heat transfer plate 5,
There is the mounting hole 9 for fastener connection on the flanging 6 of the heat transfer plate 5, the heat transfer plate 5 passes through fastener
(such as bolt and nut) is fixed in the fixing hole 8 of the housing 1.
To reduce the thermal contact resistance between the fin 3 and the inner surface of housing 1, the surface of heat transfer plate 5,
Heat conductive silica gel is added between the end of fin 3 and the inner surface of housing 1, the surface of heat transfer plate 5
(not shown) is padded, interface resistance can be substantially reduced and realized between battery core and metal shell 1
Electric insulation.
As shown in figure 1, one piece of fin 3 is accompanied between each two battery core of the power battery pack 2, should
Need to load certain thrust after the installation of power battery pack 2 and be fixed again, so may be such that this
There is good contact between fin 3 and battery core surface；The end flanging 4 of the fin 3 and the shell
One piece of thermal conductive silicon rubber cushion is accompanied between the inner surface contact surface of body 1, another end flanging 4 and the heat-conducting plate
One piece of thermal conductive silicon rubber cushion is equally also accompanied between 5, in the fin 3 and the inner surface contact surface of housing 1
Normal direction on apply certain pressure and force and be compressed on silicagel pad thickness direction, so may be such that radiating
There is good contact between piece flanging 4 and the inner surface of housing 1, heat transfer plate 5, meanwhile, pass through fastening
The heat transfer plate 5 is tightly secured in inside the housing 1 by part.
Order of the said structure when being installed be：Fin 3 is pressed from both sides between battery core, then carries out power electric
Pond group 2 is fixed, and power battery pack 2 then is put into the installation site of housing 1, is then dissipated at two
The end of backing flanging 4 is put into thermal conductive silicon rubber cushion, and another fin flanging 4 is put into heat transfer plate 5 afterwards,
Apply pressure in normal direction of the heat transfer plate 5 with the contact surface of fin flanging 4 to compress silicagel pad, finally lead to
Cross fastener and fix heat transfer plate 5.
The radiating principle of the electrokinetic cell bag of the present invention is as follows：In the normal charge and discharge process of electrokinetic cell bag,
The battery core of power battery pack 2 produces substantial amounts of heat, is exported by the fin 3 being clipped between battery core to scattered
Backing flanging 4, housing 1, heat transfer are then directed at by the heat conductive silica gel dig pass of adjacent fin flanging 4 again
In plate 5.Wherein, conduct to the heat in heat transfer plate 5 and reached again by way of heat transfer on housing 1,
Then high efficiency and heat radiation is carried out by fin 7 of the outer surface of housing 1 particularly at abutting contact surfaces, this
When radiating mode be mainly heat transfer free convection.
For example, the 48V electrokinetic cell bags of a Hybrid Vehicle, it uses 21 lithium titanate electricity
Core LTO is in series, and single battery core size is 200X105X6mm3, internal resistance is about 2m Ω, setting
The summation watt rating of LTO battery core heats is 65000W/m3, then the heat power of single battery core is 8.19W,
The heat power of the battery pack of 21 string battery core compositions is about 172W.
The length that fin is stretched out outside battery core is set to 11mm, and fin thickness is set to 0.8mm, its width
It is all 105mm with battery core, understands that fin outer differs about 3 DEG C with battery core central temperature according to experiment,
Then the heat power of fin is about 9.2W, and the heat power of 20 fin is 184W.
The thickness of thermal conductive silicon rubber cushion is set as 1mm, the thickness after installation compression is 0.8mm, thermal conductivity
For 6W/m.K, the mean temperature difference at thermal conductive silicon rubber cushion both ends is 1 DEG C, then the heat power of thermal conductive silicon rubber cushion is about
For 189W.
It is 0.61 ㎡ according to the housing outer surface area of above-mentioned battery core size design, housing outer surface is average warm
Degree differs 20 DEG C with ambient air temperature, and the NATURAL CONVECTION COEFFICIENT OF HEAT of housing and surrounding air is 15W/
㎡ .K, then the natural heat-exchange power of housing is 183W.
Therefore, above-mentioned design can reach the purpose for greatly reducing interface resistance, it is thus possible to so that dynamic
Power battery bag effectively radiates.
Although the foregoing describing the embodiment of the present invention, those skilled in the art should manage
Solution, these are merely illustrative of, and protection scope of the present invention is defined by the appended claims.This
The technical staff in field, can be to these embodiment party on the premise of without departing substantially from the principle and essence of the present invention
Formula makes various changes or modifications, but these changes and modification each fall within protection scope of the present invention.
Claims (8)
1. a kind of electrokinetic cell bag, it is characterised in that it includes a housing, more in the housing
The power battery pack and a heat transfer plate that individual battery core is formed, fin often is folded between two neighboring battery core, should
There is flanging at the both ends of fin, and one end flanging of the fin contacts with the inner surface of the housing, be another
End flanging contacts with the heat transfer plate surface, and the heat transfer plate is fixed on the housing by fastener.
2. electrokinetic cell bag as claimed in claim 1, it is characterised in that one end folding of the fin
Thermal conductive silicon rubber cushion, other end flanging and the heat transfer of the fin are folded between the inner surface of side and the housing
Thermal conductive silicon rubber cushion is folded between plate surface.
3. electrokinetic cell bag as claimed in claim 1, it is characterised in that the housing is close to the radiating
The outer surface of the flanging of piece is provided with some radiating fins.
4. electrokinetic cell bag as claimed in claim 1, it is characterised in that the material of the fin is
Aluminium alloy.
5. electrokinetic cell bag as claimed in claim 1, it is characterised in that the thickness of the fin is
0.3~1.5mm.
6. electrokinetic cell bag as claimed in claim 1, it is characterised in that the both ends of the heat transfer plate are equal
There is flanging, the flanging of the heat transfer plate is provided with the mounting hole for fastener connection.
7. electrokinetic cell bag as claimed in claim 6, it is characterised in that the fastener is bolt spiral shell
It is female.
8. electrokinetic cell bag as claimed in claim 1, it is characterised in that the material of the housing is aluminium
Alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610310947.1A CN107369791A (en) | 2016-05-11 | 2016-05-11 | Electrokinetic cell bag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610310947.1A CN107369791A (en) | 2016-05-11 | 2016-05-11 | Electrokinetic cell bag |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107369791A true CN107369791A (en) | 2017-11-21 |
Family
ID=60303542
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610310947.1A Pending CN107369791A (en) | 2016-05-11 | 2016-05-11 | Electrokinetic cell bag |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107369791A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108183281A (en) * | 2017-12-28 | 2018-06-19 | 力神动力电池系统有限公司 | The lithium ion battery of radiator structure is set in a kind of |
| CN109449540A (en) * | 2018-12-19 | 2019-03-08 | 江苏久泰电池科技有限公司 | A kind of battery radiating subassembly and lithium battery |
| CN109742458A (en) * | 2018-11-28 | 2019-05-10 | 上海松岳电源科技有限公司 | A kind of device promoted for electrokinetic cell system lithium battery group charging and discharging capabilities |
| CN111048864A (en) * | 2018-10-11 | 2020-04-21 | 伟巴斯特车顶供暖系统（上海）有限公司 | A thermal management subassembly, battery module and vehicle for battery module |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108183281A (en) * | 2017-12-28 | 2018-06-19 | 力神动力电池系统有限公司 | The lithium ion battery of radiator structure is set in a kind of |
| CN111048864A (en) * | 2018-10-11 | 2020-04-21 | 伟巴斯特车顶供暖系统（上海）有限公司 | A thermal management subassembly, battery module and vehicle for battery module |
| CN111048864B (en) * | 2018-10-11 | 2021-07-02 | 伟巴斯特车顶供暖系统（上海）有限公司 | A thermal management subassembly, battery module and vehicle for battery module |
| CN109742458A (en) * | 2018-11-28 | 2019-05-10 | 上海松岳电源科技有限公司 | A kind of device promoted for electrokinetic cell system lithium battery group charging and discharging capabilities |
| CN109449540A (en) * | 2018-12-19 | 2019-03-08 | 江苏久泰电池科技有限公司 | A kind of battery radiating subassembly and lithium battery |
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