CN105789728A - Liquid-cooled plate for battery, preparation method of liquid-cooled plate, battery module, battery pack and electric vehicle - Google Patents
Liquid-cooled plate for battery, preparation method of liquid-cooled plate, battery module, battery pack and electric vehicle Download PDFInfo
- Publication number
- CN105789728A CN105789728A CN201410811906.1A CN201410811906A CN105789728A CN 105789728 A CN105789728 A CN 105789728A CN 201410811906 A CN201410811906 A CN 201410811906A CN 105789728 A CN105789728 A CN 105789728A
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- China
- Prior art keywords
- cooling plate
- liquid cooling
- battery
- cold drawing
- fluid cold
- Prior art date
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Classifications
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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
- 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
- H01M10/6567—Liquids
- H01M10/6568—Liquids characterised by flow circuits, e.g. loops, located externally to the cells or cell casings
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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
- 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
-
- 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
Abstract
The invention discloses a liquid-cooled plate for a battery, a preparation method of the liquid-cooled plate, a battery module, a battery pack and an electric vehicle. The liquid-cooled plate comprises a lower liquid-cooled plate, a locally deforming upper liquid-cooled plate and a runner, wherein the runner is formed by surrounding of the upper liquid-cooled plate and the lower liquid-cooled plate through local deformation of the upper liquid-cooled plate; and the edge of a deformed part of the upper liquid-cooled plate is connected with the lower liquid-cooled plate in an atom binding manner. The liquid-cooled plate for the battery can have the advantages of being relatively light in weight, relatively simple in structure and relatively good in connection strength and sealing property, and can be obtained without a runner punch forming step.
Description
Technical field
The present invention relates to a kind of battery fluid cold drawing and preparation method thereof and battery modules, battery bag and electric automobile；In particular it relates to a kind of battery fluid cold drawing, prepare the method for this battery fluid cold drawing and battery fluid cold drawing obtained by this method and a kind of battery modules, including the battery bag of this battery modules, and include the electric automobile of this battery bag.
Background technology
Battery fluid cold drawing is the necessary component of set of cells, and it has the runner dynamic for cooled liquid stream, realizes heat radiation for set of cells.
The manufacture of current battery liquid cooling plate typically requires and upper liquid cooling plate punch forming first goes out runner, then welds together with lower liquid cooling plate.When the runner difference of design, it is necessary to offer different diels, thus adding the manufacturing cost of liquid cooling plate.It addition, liquid cooling plate all can be subject to the effect of high temperature in existing welding process, it is easily deformed after welding, affects the use of liquid cooling plate.And the connection of weld seam that formed of existing welding method and sealing intensity are also not enough.
Accordingly, it is desirable to provide a kind of new battery fluid cold drawing, there is higher connection and sealing intensity, and make the impact simply not welding deformation.
Summary of the invention
It is an object of the invention to overcome the drawbacks described above of existing battery fluid cold drawing, it is provided that a kind of battery fluid cold drawing and preparation method thereof and battery modules, battery bag and electric automobile.
To achieve these goals, the present invention provides a kind of battery fluid cold drawing, and this liquid cooling plate includes: lower liquid cooling plate, the upper liquid cooling plate of local deformation and surround the runner of formation with lower liquid cooling plate by the local deformation of upper liquid cooling plate；The mode that the edge of the crushed element of upper liquid cooling plate is combined by atom with lower liquid cooling plate is attached.
The preparation method that present invention also offers a kind of battery fluid cold drawing, the method includes: upper liquid cooling plate and lower liquid cooling plate parallel interval are placed；Upper liquid cooling plate and lower liquid cooling plate adopt electromagnetic pulse weldering welding, and the upper liquid cooling plate of weld deforms upon and is connected formation connecting portion with lower liquid cooling plate, forms runner between two adjacent connecting portions.
Present invention also offers a kind of battery fluid cold drawing prepared by method provided by the invention.
Present invention also offers a kind of battery modules, this battery modules includes multiple battery fluid cold drawing；Wherein, described battery fluid cold drawing is battery fluid cold drawing provided by the invention.
Present invention also offers a kind of battery bag, this battery bag includes multiple battery modules, and wherein, described battery modules is battery modules provided by the invention.
Present invention also offers a kind of electric automobile, this electric automobile includes multiple battery bag, and wherein, described battery bag is battery bag provided by the invention.
Battery fluid cold drawing provided by the invention, the edge of the crushed element of the upper liquid cooling plate wherein connected in the way of atom combination and lower liquid cooling plate, realize the high specific heat material of good heat dissipation effect, combination composition battery fluid cold drawing such as copper with light material, can ensure that the intensity of battery fluid cold drawing realizes radiating effect more preferably and lightweight simultaneously, it is possible to have better bonding strength and sealing property.Further, in the present invention, it is also possible to by when being attached, the electromagnetic pulse welding of employing makes liquid cooling plate deformation form runner, saves punch forming step of the prior art, reduces the molding cost of battery fluid cold drawing.
Other features and advantages of the present invention will be described in detail in detailed description of the invention part subsequently.
Accompanying drawing explanation
Accompanying drawing is used to provide a further understanding of the present invention, and constitutes the part of description, is used for explaining the present invention, but is not intended that limitation of the present invention together with detailed description below.In the accompanying drawings:
Fig. 1 is liquid cooling plate welding pre-structure；
Fig. 2 is structure after liquid cooling plate welding；
Fig. 3 is the 3 D stereo view after liquid cooling plate welding；
Fig. 4 is the flow channel shape of a specific embodiment of the present invention；
Fig. 5 is the flow channel shape of the another embodiment of the present invention；
Fig. 6 is the flow channel shape of the another embodiment of the present invention；
Fig. 7 is the metallograph (in square frame, weld is without transition zone) of electromagnetic pulse of the present invention weldering weld；
Fig. 8 is the metallograph (in circle, weld is transition zone) of Laser Welding weld；
Fig. 9 is the metallograph of Laser Welding weld new life alloy fracture.
Description of reference numerals
1, lower liquid cooling plate 2, upper liquid cooling plate 3, runner 4, junction 5, not deformed part
6, crushed element
Detailed description of the invention
Hereinafter the specific embodiment of the present invention is described in detail.It should be appreciated that detailed description of the invention described herein is merely to illustrate and explains the present invention, it is not limited to the present invention.
The present invention provides a kind of battery fluid cold drawing, as in figure 2 it is shown, this liquid cooling plate includes: lower liquid cooling plate 1, the upper liquid cooling plate 2 of local deformation and surround the runner 3 of formation with lower liquid cooling plate 1 by the local deformation of upper liquid cooling plate 2；The mode that the edge of the crushed element 6 of upper liquid cooling plate 2 is combined by atom with lower liquid cooling plate 1 is attached.
Specifically as described in Figure 2, the edge of the crushed element 6 of upper liquid cooling plate 2 is connected at weld seam 4 place with lower liquid cooling plate 1.Not deformed part 5, crushed element 6 and lower liquid cooling plate 1 surround and form runner 3.
In the present invention, in utilization, the high specific heat performance of liquid cooling plate can provide better radiating effect for battery fluid cold drawing, adopts light material can provide battery fluid cold drawing lightweight.Conventional method not easily realizes the welding between different metal, and needs first upper liquid cooling plate molding runners to be welded again, takes a lot of work.And in the present invention, electromagnetic pulse is utilized while being welded on two kinds of different metals of welding, to make liquid cooling plate deformation just form runner, need not punch forming in advance, non-melt welding manner simultaneously, also without the impact that normal welding is heated, the amount of being deformed can error free will not weld without shifting ground when welding.
According to the present invention, described in be connected as non-melt welding manner, it is preferable that in situation, lower liquid cooling plate and upper liquid cooling plate are different metals, are absent from transition zone on the interface that edge and the lower liquid cooling plate of the crushed element of upper liquid cooling plate is attached.Described transition zone refers to the structure of the metal of cover plate and housing metal molten recrystallization of formation under the welding manner of fusing or the brazing layer of welded cover plate and housing formation.The metallograph at weld seam 4 place in Fig. 2 as shown in Figure 7, without transition zone in square frame, does not specifically have newly-generated alloy structure.
According to the invention it is preferred in situation, the width of the part that the edge of the crushed element of upper liquid cooling plate and lower liquid cooling plate are attached is 1-20mm；Preferred described width is 8-15mm.The width at weld seam 4 place in this part and Fig. 2.
According to the invention it is preferred in situation, the bonding strength of the part that the edge of the crushed element of upper liquid cooling plate and lower liquid cooling plate are attached is 100-800MPa；It is preferably 400-600MPa.
According to the invention it is preferred in situation, the sealing intensity of the part that the edge of the crushed element of upper liquid cooling plate and lower liquid cooling plate are attached is 0.01-0.2MPa；It is preferably 0.01-0.06MPa.
According to the invention it is preferred in situation, upper liquid cooling plate is high specific heat metal, lower liquid cooling plate is light-weight metal；Preferably, upper liquid cooling plate is at least one in copper, copper alloy and steel；Lower liquid cooling plate is at least one in aluminum, aluminium alloy and magnesium alloy.
According to the present invention, in Fig. 2, represent the width of runner with letter w, represent the height of runner with letter t, it is preferable that in situation, the width of described runner is 3-30mm, and the height of described runner is 0.3-2mm.Shown in runner shape can according to battery fluid cold drawing need design, it is preferable that described runner can be linear type or bending type.Such as can for the shape of the W type shown in U-shaped, the Fig. 5 shown in Fig. 4 and the F type shown in Fig. 6.
The preparation method that present invention also offers a kind of battery fluid cold drawing, the method includes: upper liquid cooling plate and lower liquid cooling plate parallel interval are placed；Upper liquid cooling plate and lower liquid cooling plate adopt electromagnetic pulse weldering welding, and the upper liquid cooling plate of weld deforms upon and is connected formation connecting portion with lower liquid cooling plate, forms runner between two adjacent connecting portions.
According to the invention it is preferred in situation, the distance between described two adjacent connecting portions is 3-30mm.
According to the invention it is preferred in situation, the gap at described interval is 0.3-2mm.
According to the invention it is preferred in situation, described two adjacent connecting portions are parallel.
According to the invention it is preferred in situation, the welding energy of described electromagnetic pulse welding is 16-64KJ.
Present invention also offers a kind of battery fluid cold drawing prepared by method provided by the invention.
Present invention also offers a kind of battery modules, this battery modules includes multiple battery fluid cold drawing；Wherein, described battery fluid cold drawing is battery fluid cold drawing provided by the invention.
In the present invention, described battery fluid cold drawing is in described battery modules, it is possible to be positioned between cell, it is also possible to be positioned at the outer surface of battery modules, thinks that battery provides cooling heat radiation.
Present invention also offers a kind of battery bag, this battery bag includes multiple battery modules, and wherein, described battery modules is battery modules provided by the invention.
Present invention also offers a kind of electric automobile, this electric automobile includes multiple battery bag, and wherein, described battery bag is battery bag provided by the invention.
Hereinafter will be described the present invention by embodiment.
In following example, bonding strength adopts the GP-TS2000M that company is surveyed in high product examine to record by pull force test method；Sealing intensity adopts the CPB air-tightness tester of BYD company to record by air tightness testing method.
Embodiment 1
By upper liquid cooling plate (copper product) and lower liquid cooling plate (aluminum alloy materials) parallel placement as shown in fig. 1, gap is 2mm, upper liquid cooling plate applies electromagnetic pulse welding (welding equipment model PS48-16/25, PST company), welding energy is 16KJ, obtains battery fluid cold drawing, structure after welding is as shown in Figure 2,3, the width of the part wherein connected is 8mm, and the width of runner is 15mm, is highly 2mm.Formed runner be shaped as shown in Fig. 4, weight is 150g.
The battery fluid cold drawing obtained is attached intensity and sealing property test, and bonding strength is 400MPa, and sealing intensity is 0.01MPa.
With the structure and morphology of the part that the edge of the crushed element of liquid cooling plate on metallography microscope sem observation and lower liquid cooling plate connect, as shown in Figure 7, it does not have alloy phase diagram.
Embodiment 2
By upper liquid cooling plate (Cu alloy material) and lower liquid cooling plate (aluminum) parallel placement as shown in fig. 1, gap is 1.5mm, upper liquid cooling plate applies electromagnetic pulse welding, welding energy is 20KJ, obtaining battery fluid cold drawing, the structure after welding is as in figure 2 it is shown, the width of the part wherein connected is 10mm, the width of runner is 20mm, is highly 1.5mmm.Formed runner be shaped as shown in Fig. 5, weight is 150g.
The battery fluid cold drawing obtained is attached intensity and sealing property test, and bonding strength is 300MPa, and sealing intensity is 0.02MPa.
With the structure and morphology of the part that the edge of the crushed element of liquid cooling plate on metallography microscope sem observation and lower liquid cooling plate connect, similar to shown in Fig. 7, it does not have alloy phase diagram.
Embodiment 3
By upper liquid cooling plate (Steel material) and lower liquid cooling plate (magnesium alloy materials) parallel placement as shown in fig. 1, it is spaced apart 1.5mm, upper liquid cooling plate applies electromagnetic pulse welding, welding energy is 32KJ, obtaining battery fluid cold drawing, the structure after welding is as in figure 2 it is shown, the width of the part wherein connected is 15mm, the width of runner is 20mm, is highly 1.5mm.Formed runner be shaped as shown in Fig. 6, weight is 150g.
The battery fluid cold drawing obtained is attached intensity and sealing property test, and bonding strength is 450MPa, and sealing intensity is 0.035MPa.
With the structure and morphology of the part that the edge of the crushed element of liquid cooling plate on metallography microscope sem observation and lower liquid cooling plate connect, to similar as shown in Figure 7, it does not have alloy phase diagram.
Comparative example 1
By parallel with lower liquid cooling plate (copper product) for upper liquid cooling plate (copper product) placement, gap is 0mm, applying laser weld (welding equipment model DISC8002, Tong Kuai company) on upper liquid cooling plate, bonding power is 8KW, speed of welding is 80mm/s, obtaining battery fluid cold drawing, as shown in Figure 2,3, wherein the width of junction is 1.5mm to the structure after welding, the width of runner is 20mm, is highly 1.5mm.Formed runner be shaped as shown in Fig. 4, weight is 250g.
The battery fluid cold drawing obtained is attached intensity and sealing property test, and bonding strength is 300MPa, and sealing intensity is 0.02MPa.
With the structure and morphology of the part that the edge of the crushed element of liquid cooling plate on metallography microscope sem observation and lower liquid cooling plate connect, as shown in Figure 8,9, there is newborn alloy phase diagram.
By the result of above-described embodiment and comparative example it can be seen that battery fluid cold drawing provided by the invention can have lighter weight, structure is simpler, and bonding strength and sealing property are better, and do not need punch forming runner step to obtain.
Claims (18)
1. a battery fluid cold drawing, this liquid cooling plate includes: lower liquid cooling plate, local deformation upper liquid cooling plate and by the local deformation of upper liquid cooling plate with lower liquid cooling plate surround formed runner；The mode that the edge of the crushed element of upper liquid cooling plate is combined by atom with lower liquid cooling plate is attached.
2. battery fluid cold drawing according to claim 1, wherein, lower liquid cooling plate and upper liquid cooling plate are different metals, are absent from transition zone on the interface that edge and the lower liquid cooling plate of the crushed element of upper liquid cooling plate is attached.
3. battery fluid cold drawing according to claim 1, wherein, the width of the part that the edge of the crushed element of upper liquid cooling plate and lower liquid cooling plate are attached is 1-20mm；Preferred described width is 8-15mm.
4. battery fluid cold drawing according to claim 1, wherein, the bonding strength of the part that the edge of the crushed element of upper liquid cooling plate and lower liquid cooling plate are attached is 100-800MPa；It is preferably 400-600MPa.
5. battery fluid cold drawing according to claim 1, wherein, the sealing intensity of the part that the edge of the crushed element of upper liquid cooling plate and lower liquid cooling plate are attached is 0.01-0.2MPa；It is preferably 0.01-0.06MPa.
6. the battery fluid cold drawing according to any one in claim 1-5, wherein, upper liquid cooling plate is high specific heat metal, and lower liquid cooling plate is light-weight metal.
7. battery fluid cold drawing according to claim 6, wherein, upper liquid cooling plate is at least one in copper, copper alloy and steel；Lower liquid cooling plate is at least one in aluminum, aluminium alloy and magnesium alloy.
8. the battery fluid cold drawing according to any one in claim 1-7, wherein, the width of described runner is 3-30mm, and the height of described runner is 0.3-2mm.
9. the battery fluid cold drawing according to any one in claim 1-7, wherein, described runner is linear type or bending type.
10. a preparation method for battery fluid cold drawing, the method includes: upper liquid cooling plate and lower liquid cooling plate parallel interval are placed；Upper liquid cooling plate and lower liquid cooling plate adopt electromagnetic pulse weldering welding, and the upper liquid cooling plate of weld deforms upon and is connected formation connecting portion with lower liquid cooling plate, forms runner between two adjacent connecting portions.
11. method according to claim 10, wherein, the distance between described two adjacent connecting portions is 3-30mm.
12. the method according to claim 10 or 11, wherein, the gap at described interval is 0.3-2mm.
13. the method according to claim 10 or 11, wherein, described two adjacent connecting portions are parallel.
14. the battery fluid cold drawing according to any one in claim 10-13, wherein, the welding energy of described electromagnetic pulse welding is 16-64KJ.
15. the battery fluid cold drawing that the method described in any one in claim 10-14 prepares.
16. a battery modules, this battery modules includes multiple battery fluid cold drawing；Wherein, described battery fluid cold drawing is the battery fluid cold drawing in claim 1-9 and 15 described in any one.
17. a battery bag, this battery bag includes multiple battery modules, and wherein, described battery modules is the battery modules described in claim 16.
18. an electric automobile, this electric automobile includes multiple battery bag, and wherein, described battery bag is the battery bag described in claim 17.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410811906.1A CN105789728B (en) | 2014-12-23 | 2014-12-23 | Battery liquid cooling plate, preparation method thereof, battery module, battery pack and electric automobile |
| PCT/CN2015/098291 WO2016101872A1 (en) | 2014-12-23 | 2015-12-22 | Battery cooling plate assembly and method for preparing the same, battery module, battery package and electric vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410811906.1A CN105789728B (en) | 2014-12-23 | 2014-12-23 | Battery liquid cooling plate, preparation method thereof, battery module, battery pack and electric automobile |
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| Publication Number | Publication Date |
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| CN105789728A true CN105789728A (en) | 2016-07-20 |
| CN105789728B CN105789728B (en) | 2020-07-10 |
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| CN201410811906.1A Active CN105789728B (en) | 2014-12-23 | 2014-12-23 | Battery liquid cooling plate, preparation method thereof, battery module, battery pack and electric automobile |
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| CN (1) | CN105789728B (en) |
| WO (1) | WO2016101872A1 (en) |
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| CN107394310A (en) * | 2017-08-01 | 2017-11-24 | 天津市捷威动力工业有限公司 | Electrokinetic cell cooling structure and system |
| CN107994292A (en) * | 2017-11-27 | 2018-05-04 | 常州常发制冷科技有限公司 | Bottom cold plate for automobile batteries heat dissipation |
| CN110870092A (en) * | 2017-07-03 | 2020-03-06 | 米巴电动汽车有限公司 | Electrical storage device having a cooling device arranged on a busbar |
| CN111889875A (en) * | 2020-08-04 | 2020-11-06 | 索格菲（苏州）汽车部件有限公司 | Processing technology of battery cooling plate |
| CN113690515A (en) * | 2020-05-18 | 2021-11-23 | 本特勒汽车工业有限责任公司 | Temperature control device for battery module |
| WO2023273811A1 (en) * | 2021-06-30 | 2023-01-05 | 比亚迪股份有限公司 | Battery cooling plate, and battery system |
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| KR102248228B1 (en) * | 2017-09-26 | 2021-05-03 | 주식회사 엘지화학 | Battery module housing by applying Electromagnetic pulse technology and Method for manufacturing the same |
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| CN107394310A (en) * | 2017-08-01 | 2017-11-24 | 天津市捷威动力工业有限公司 | Electrokinetic cell cooling structure and system |
| CN107994292A (en) * | 2017-11-27 | 2018-05-04 | 常州常发制冷科技有限公司 | Bottom cold plate for automobile batteries heat dissipation |
| CN113690515A (en) * | 2020-05-18 | 2021-11-23 | 本特勒汽车工业有限责任公司 | Temperature control device for battery module |
| CN111889875A (en) * | 2020-08-04 | 2020-11-06 | 索格菲（苏州）汽车部件有限公司 | Processing technology of battery cooling plate |
| WO2023273811A1 (en) * | 2021-06-30 | 2023-01-05 | 比亚迪股份有限公司 | Battery cooling plate, and battery system |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2016101872A1 (en) | 2016-06-30 |
| CN105789728B (en) | 2020-07-10 |
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