CN203895574U - Honeycomb liquid cooling device for lithium batteries - Google Patents
Honeycomb liquid cooling device for lithium batteries Download PDFInfo
- Publication number
- CN203895574U CN203895574U CN201420271498.0U CN201420271498U CN203895574U CN 203895574 U CN203895574 U CN 203895574U CN 201420271498 U CN201420271498 U CN 201420271498U CN 203895574 U CN203895574 U CN 203895574U
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- CN
- China
- Prior art keywords
- liquid
- battery
- liquid cooling
- heat
- heat collector
- 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.)
- Expired - Lifetime
Links
- 239000007788 liquid Substances 0.000 title claims abstract description 92
- 238000001816 cooling Methods 0.000 title claims abstract description 51
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 21
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 21
- 239000012530 fluid Substances 0.000 claims description 15
- 239000000463 material Substances 0.000 claims description 13
- 230000001413 cellular effect Effects 0.000 claims description 4
- 229920001296 polysiloxane Polymers 0.000 claims description 4
- 239000004519 grease Substances 0.000 claims description 3
- 239000000110 cooling liquid Substances 0.000 abstract description 6
- 238000010438 heat treatment Methods 0.000 abstract 1
- 230000005855 radiation Effects 0.000 description 7
- 239000011449 brick Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000003507 refrigerant Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 239000000615 nonconductor Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Secondary Cells (AREA)
Abstract
The utility model provides a honeycomb liquid cooling device for lithium batteries. The device comprises a closed heat collecting cavity, wherein a liquid inlet is formed in one end of the heat collecting cavity; a liquid outlet is formed in the other end of the heat collecting cavity; the liquid inlet and the liquid outlet are connected in series through a liquid cooling pipe to form a liquid cooling system circuit; interpenetrated honeycomb battery cavities for installing the batteries are arranged in two side faces of the heat collecting cavity; channels for liquid flow are left among outer walls of the battery cavities in the heat collecting cavity; a liquid cavity is formed between the inner wall of the heat collecting cavity and the outer walls of the battery cavities; and the liquid inlet, the liquid outlet and the liquid cavity are communicated. The cooling liquid in a liquid storing box is guided into the liquid cavity in the heat collecting cavity from the liquid inlet through a liquid cooling pump and flows in the passages between the outer walls of two battery cavities to timely take away the heat produced by battery heating; and the cooling liquid flows out from the liquid outlet and enters a radiator to exchange heat so as to realize the purpose of circulating cooling.
Description
Technical field
The utility model relates to pure electronic and mixed electrical automobile battery thermal management technical field, is specifically related to a kind of honeycomb fashion liquid cooling apparatus of lithium battery.
Background technology
In recent years, because the problem of energy cost and environmental pollution is more and more outstanding, pure electric automobile and hybrid vehicle can significantly be eliminated the even advantage of zero-emission vehicle tail gas with it, are subject to the attention of government and each Automobile Enterprises.One of key technology of new-energy automobile is electrokinetic cell, and the quality of battery is determining the cost of electric automobile on the one hand, is determining on the other hand the distance travelled of electric automobile.But pure electronic and hybrid vehicle still has a lot of technical problems to need to break through, battery and capacity attenuation are major issues, and the temperature contrast of the useful life of battery and capacity attenuation and battery system and temperature rising amplitude have great relation.
Battery produces a large amount of heats at work, if this heat can not be discharged from time, will make the temperature of power brick constantly increase, in power brick, the temperature contrast of the battery of diverse location can expand gradually, make in the adverse circumstances of battery in high temperature rise, the large temperature difference, thereby affect useful life of electrokinetic cell.Particularly in hot summer, because ambient temperature is very high, final temperature rise will be much larger than the rational working range of battery, thereby has a strong impact on battery life and capacity, and causes larger puzzlement for cell discharge performance.In addition on the one hand, battery service behaviour is at low temperatures very poor, particularly particularly evident in cold winter, charge-discharge performance is compared with far short of what is expected under normal temperature, in order to make battery also can meet at low temperatures the demand that electrokinetic cell discharges and recharges, power brick is carried out to heat temperature raising, and to make it be operated in the best temperature that discharges and recharges be necessary heat management measure.
Therefore, in order to improve the performance of new-energy automobile, make battery system bring into play best performance and life-span, the heat management device of high temperature heat radiation, low-temperature heat just need to be provided battery.
The heat management of existing battery generally adopts Natural Heat Convection, air blast cooling heat radiation, evaporator that the modes such as low-temperature receiver heat radiation, liquid-cooling heat radiation are provided.Wherein liquid-cooling heat radiation mode is because the specific heat capacity of liquid is much larger than the specific heat capacity of air, less flow just can be taken away larger heat, thereby take the heat of battery system to system outside efficiently, reduce the temperature rise of battery system, improve the serviceability of battery.Now a lot of new-energy automobiles all adopt liquid-cooling heat radiation mode to carry out thermal management scheme as battery system.But existing liquid cooling thermal management scheme is mainly clipped between two battery modules by liquid cooling plate, or interspersed liquid cooling pipeline between battery, make the heat that battery sends can not be directly passed to liquid cooling liquid, or because liquid cooling pipe only contacts with the very fraction outer surface of battery, make to be at thermal source that battery arrives the thermal resistance of liquid cooling liquid larger, thereby temperature rise is increased, can not bring into play the function of liquid cooling system completely.
Utility model content
The purpose of this utility model is just to provide a kind of honeycomb fashion liquid cooling apparatus of lithium battery, solve the thermal resistance excessive problem of lithium battery to liquid cooling liquid, make the heat producing when battery operated can rapidly and efficiently be delivered to liquid cooling liquid, then be recycled to liquid cooling heat exchanger by liquid at liquid cooling pipeline heat is taken in system external environment condition.
In order to reach above-mentioned effect, the utility model provides a kind of honeycomb fashion liquid cooling apparatus of lithium battery, comprise a closed heat collector cavity, one end of described heat collector cavity is provided with inlet, the other end is provided with liquid outlet, and described inlet, liquid outlet form liquid cooling system loop by liquid cooling pipe string connection; The two sides of described heat collector cavity offer mutual perforation, for the cellular battery cavities of battery is installed; The battery cavities outer wall that is positioned at the inner chamber place of heat collector cavity leaves the passage for liquid flow each other; Between the inwall of described heat collector cavity and the outer wall of battery cavities, form fluid chamber, described inlet, liquid outlet are all communicated with described fluid chamber.
Further, the length of described battery cavities is not more than the height of battery.More optimizedly the length of battery cavities is also that the width of heat collector cavity just in time equates with the height of lithium battery, thereby can dispel the heat to battery better.
Further, the inwall of described battery cavities is provided with one deck heat-conducting layer, and the material of described heat-conducting layer is thermal interfacial material.
Further, described thermal interfacial material is heat-conducting silicone grease.
Further, described liquid cooling system comprises liquid reserve tank, liquid cooling pump, radiator, and the port of export of described liquid reserve tank is connected with the inlet of heat collector cavity by liquid cooling pump, and the liquid outlet of described heat collector cavity is connected to form circulation fluid cold loop by radiator and liquid reserve tank.
Wherein radiator is preferably air cooling heat exchanger.
In the utility model, form the cellular battery cavities of mutual perforation at the upper/lower terminal face of heat collector cavity, this manufacturing process is very ripe, conventionally use injection moulding, die cast to form, or become a cavity body structure by upper and lower two injection molding parts by ultra-sonic welded, certainly also have other manufacturing process to adopt.
When use, lithium battery monomer is placed in battery cavities, the outer wall of battery and the inwall of battery cavities fit, then increase the heat-conducting layer that one deck is formed by thermal interfacial materials such as heat-conducting silicone greases between them.Because liquid outer wall round battery cavities in fluid chamber flows, can take away fully the heat that battery produces, reach better heat sinking function.
Refrigerant liquid in liquid reserve tank imports the fluid chamber in heat collector cavity by liquid cooling pump from inlet, current in the passage between battery cavities outer wall between two, in time area battery because sending out heat thermogenetic, then go out to enter radiator from fluid oral fluid and carry out heat exchange, realize the object of circulation temperature lowering.
Thermal interfacial material (Thermal Interface Materials) is called again heat-conducting interface material or interface Heat Conduction Material, the microvoid of generation and the hole of surface irregularity while being mainly used in filling up bi-material joint or contact, reduce heat transmit impedance, improve thermal diffusivity.Between the surface of solids and the surface of solids, have imperceptible rough space, if they are directly installed on together, the real contact area between them generally only has 10% of foot of radiator area, and all the other are air gap.Because air conductive coefficient only has 0.026W/ (mK), be hot non-conductor, by larger the contact heat resistance of battery and battery room wall, can hinder the conduction of heat, finally cause the usefulness of heat management to reduce.Use has the thermal interfacial material of high-termal conductivity and fills full these gaps, gets rid of air wherein, between battery and battery room wall, sets up effective thermal conduction path, and significantly low contact heat resistance, is brought into play the effect of radiator fully.
Meanwhile, the battery cavities in heat collector cavity of the present utility model, except the function of heat radiation, can also be born the function of fixed installation lithium battery.In heat collector cavity of the present utility model, the wall thickness of different parts can design according to actual conditions, plays the effect of fixing lithium battery.
The lithium battery being installed in the battery cavities in heat collector cavity of the present utility model forms battery modules by series and parallel, then by the lithium battery in several heat collector cavities again series and parallel get up to form and high-powerly have battery pack for automobile.The fluid chamber that refrigerant liquid imports in each heat collector cavity by liquid cooling pump is carried out radiating and cooling, thus the performance of the battery of protecting well.
Brief description of the drawings
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Fig. 1 is the utility model structural representation;
Fig. 2 is A-A horizontal cross in Fig. 1;
The vertical view of Fig. 2 in Fig. 3;
Fig. 4 is B-B vertical sectional view in Fig. 1;
Fig. 5 is the liquid cooling circulation schematic diagram of battery case.
In figure: 1-heat collector cavity, 2-inlet, 3-liquid outlet, 4-battery cavities, 5-fluid chamber, 6-passage, 7-battery case, 8-air cooling heat exchanger, 9-liquid reserve tank, 10-liquid cooling pump.
Embodiment
As shown in Figure 1, a kind of honeycomb fashion liquid cooling apparatus of lithium battery, comprises a closed heat collector cavity 1, and one end of described heat collector cavity 1 is provided with inlet 2, the other end is provided with liquid outlet 3, and described inlet 2, liquid outlet 3 form liquid cooling system loop by liquid cooling pipe string connection; The two sides of described heat collector cavity 1 offer mutual perforation, for the cellular battery cavities 4 of battery is installed; As shown in Figure 3, the battery cavities outer wall that is positioned at the inner chamber place of heat collector cavity leaves the passage 6 for liquid flow each other; As in Figure 2-4, between the inwall of heat collector cavity 1 and the outer wall of battery cavities, form fluid chamber 5, described inlet 2, liquid outlet 3 are communicated with described fluid chamber 5.
Further, the length of described battery cavities 4 is not more than the height of battery.More optimizedly the length of battery cavities is also that the width of heat collector cavity just in time equates with the height of lithium battery, thereby can dispel the heat to battery better.
More excellent, the inwall of described battery cavities 4 is provided with one deck and is filled the heat-conducting layer forming by heat-conducting silicone grease.
As shown in Figure 5, in the battery cavities in heat collector cavity 1, install lithium battery, and carry out series and parallel and form battery case 7 with the battery in other heat collector cavity.The port of export of liquid reserve tank 9 is connected with the inlet of heat collector cavity 1 by liquid cooling pump 10, and the liquid outlet of heat collector cavity 1 is connected to form the circulation circuit of liquid cooling system by air cooling heat exchanger 8 and liquid reserve tank 9.Refrigerant liquid in liquid reserve tank 9 by liquid cooling pump 10 from importing the fluid chamber in each heat collector cavity 1, current in the passage between battery cavities outer wall between two, in time area battery because sending out heat thermogenetic, flow out from the liquid outlet of heat collector cavity 1 again, enter again in air cooling heat exchanger 8 and carry out heat exchange, realize the object of circulation temperature lowering.
Above embodiment is not limited only to protection range of the present utility model, all modify based on basic thought of the present utility model or change all belong to protection range of the present utility model.
Claims (5)
1. a honeycomb fashion liquid cooling apparatus for lithium battery, is characterized in that: comprise a closed heat collector cavity, one end of described heat collector cavity is provided with inlet, the other end is provided with liquid outlet, and described inlet, liquid outlet form liquid cooling system loop by liquid cooling pipe string connection; The two sides of described heat collector cavity offer mutual perforation, for the cellular battery cavities of battery is installed; The battery cavities outer wall that is positioned at the inner chamber place of heat collector cavity leaves the passage for liquid flow each other; Between the inwall of described heat collector cavity and the outer wall of battery cavities, form fluid chamber, described inlet, liquid outlet are all communicated with described fluid chamber.
2. the honeycomb fashion liquid cooling apparatus of lithium battery according to claim 1, is characterized in that: the length of described battery cavities is not more than the height of battery.
3. the honeycomb fashion liquid cooling apparatus of lithium battery according to claim 1, is characterized in that: the inwall of described battery cavities is provided with one deck heat-conducting layer, the material of described heat-conducting layer is thermal interfacial material.
4. the honeycomb fashion liquid cooling apparatus of lithium battery according to claim 3, is characterized in that: described thermal interfacial material is heat-conducting silicone grease.
5. the honeycomb fashion liquid cooling apparatus of lithium battery according to claim 1, it is characterized in that: described liquid cooling system also comprises liquid reserve tank, liquid cooling pump, radiator, the port of export of described liquid reserve tank is connected with the inlet of heat collector cavity by liquid cooling pump, and the liquid outlet of described heat collector cavity is connected to form circulation fluid cold loop by radiator and liquid reserve tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420271498.0U CN203895574U (en) | 2014-05-26 | 2014-05-26 | Honeycomb liquid cooling device for lithium batteries |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420271498.0U CN203895574U (en) | 2014-05-26 | 2014-05-26 | Honeycomb liquid cooling device for lithium batteries |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203895574U true CN203895574U (en) | 2014-10-22 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420271498.0U Expired - Lifetime CN203895574U (en) | 2014-05-26 | 2014-05-26 | Honeycomb liquid cooling device for lithium batteries |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203895574U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103996888A (en) * | 2014-05-26 | 2014-08-20 | 华霆（合肥）动力技术有限公司 | Honeycomb-shaped liquid cooling device of lithium battery |
| CN105449311A (en) * | 2015-12-31 | 2016-03-30 | 北京工业大学 | Liquid heat exchange battery module structure |
| CN108633233A (en) * | 2018-06-29 | 2018-10-09 | 苏州汇川技术有限公司 | Liquid cooling heat radiator and power electronic equipment |
-
2014
- 2014-05-26 CN CN201420271498.0U patent/CN203895574U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103996888A (en) * | 2014-05-26 | 2014-08-20 | 华霆（合肥）动力技术有限公司 | Honeycomb-shaped liquid cooling device of lithium battery |
| CN105449311A (en) * | 2015-12-31 | 2016-03-30 | 北京工业大学 | Liquid heat exchange battery module structure |
| CN108633233A (en) * | 2018-06-29 | 2018-10-09 | 苏州汇川技术有限公司 | Liquid cooling heat radiator and power electronic equipment |
| CN108633233B (en) * | 2018-06-29 | 2024-04-30 | 苏州汇川技术有限公司 | Liquid cooling radiator and power electronic equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder | ||
| CP02 | Change in the address of a patent holder |
Address after: 230601 Anhui city in Hefei Province, the economic and Technological Development Zone No. 62 battery factory Patentee after: Huating (Hefei) Power Technology Co.,Ltd. Address before: Qing Luan road 230601 Anhui city in Hefei Province Economic and Technological Development Zone No. 26 Patentee before: Huating (Hefei) Power Technology Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20141022 |