CN204067519U - A kind of electrokinetic cell with ultra-thin lightweight heat abstractor - Google Patents
A kind of electrokinetic cell with ultra-thin lightweight heat abstractor Download PDFInfo
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- CN204067519U CN204067519U CN201420423616.5U CN201420423616U CN204067519U CN 204067519 U CN204067519 U CN 204067519U CN 201420423616 U CN201420423616 U CN 201420423616U CN 204067519 U CN204067519 U CN 204067519U
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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
- 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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Abstract
The utility model discloses a kind of electrokinetic cell with ultra-thin lightweight heat abstractor, comprise at least 2 Battery pack group and casings, described battery pack is positioned in casing, heat abstractor is provided with between adjacent 2 Battery pack groups, described heat abstractor comprises metal substrate, metal cover board, bend pipe and phase-change material bag, the edge of described metal cover board is connected with the edge seal of metal substrate, and described metal cover board and metal substrate form evaporation cavity, working medium is filled with in described evaporation cavity, 2 openends of described bend pipe are all communicated with evaporation cavity, the upper end of described bend pipe passes casing, in adjacent 2 Battery pack groups, described metal substrate is close to one of them battery surface, and metal cover board and bend pipe lower end are close in a side of described phase-change material bag, and another battery surface is close in the another side of institute's phase-change material bag.The utility model reduces contact heat resistance, improves radiating effect and radiating efficiency, and uniform temperature is good simultaneously, and the office's temperature avoiding electrokinetic cell is too high.
Description
Technical field
The utility model relates to electrokinetic cell, is specifically related to a kind of electrokinetic cell with ultra-thin lightweight heat abstractor.
Background technology
The sustainable growth of automobile pollution and the huge consumption of energy resources and the biological environment contradiction constantly worsened etc. between problem has driven the develop rapidly of new-energy automobile especially electric automobile industry.And restrict the safety and reliability that electric automobile key factor that is fast-developing and extensive use is exactly battery.In use, inside battery heat production is fast and quantity of heat production is large, under normal operation (0.5C-1.0C discharge-rate) operating mode, monolithic battery rate of heat production reaches 10W, under (1.0C-3.0C discharge-rate) extreme operating conditions such as upward slope, startup or acceleration, the rate of heat production of monolithic battery can increase to 46W.Battery temperature rises and causes its hydraulic performance decline, even occurs leakage, catches fire, the situation such as inefficacy, time serious, vigorous combustion or blast occurs, causes security incident and loss of life or personal injury.Therefore, electrokinetic cell seriously governs the development of electric automobile etc.Therefore electric automobile power battery system needs to be equipped with efficient cooling measure.At present in the research of power battery thermal management system, adopt heat-pipe-type mainly loop type gravity assisted heat pipe, pulsating heat pipe and sintered heat pipe.
When the electrokinetic cell of automobile adopts above-mentioned heat pipe to dispel the heat, there is following defect: 1, the contact area of heat pipe and electrokinetic cell is few, and radiating effect is poor, and uniform temperature is poor, cause electrokinetic cell local temperature higher; 2, the resistance that the working medium in heat pipe runs into is comparatively large, and cannot start rapidly, radiating efficiency is low, thus easily causes cell damage; 3, heat pipe needs to pipe packing material sintering capillary structure, this complex structure, and difficulty of processing is large, and weight is comparatively large, and volume is large; 4, heat pipe mostly is round tube, and electrokinetic cell is mostly square, and this causes the laminating degree of heat pipe and electrokinetic cell not high, and installs inconvenient; 5, same heat pipe is only applied to the electrokinetic cell of same model, and this causes the poor universality of heat pipe.
Utility model content
The purpose of this utility model is the deficiency existed to overcome above prior art, provides a kind of simple and reasonable for structure, the electrokinetic cell of what radiating efficiency was high, easy for installation have ultra-thin lightweight heat abstractor.
The purpose of this utility model is realized by following technical scheme: the electrokinetic cell originally with ultra-thin lightweight heat abstractor, comprise at least 2 Battery pack group and casings, described battery pack is positioned in casing, heat abstractor is provided with between adjacent 2 Battery pack groups, described heat abstractor comprises metal substrate, metal cover board, bend pipe and phase-change material bag, the edge of described metal cover board is connected with the edge seal of metal substrate, and described metal cover board and metal substrate form evaporation cavity, working medium is filled with in described evaporation cavity, 2 openends of described bend pipe are all communicated with evaporation cavity, the upper end of described bend pipe passes casing, in adjacent 2 Battery pack groups, described metal substrate is close to one of them battery surface, and metal cover board and bend pipe lower end are close in a side of described phase-change material bag simultaneously, and another battery surface is close in the another side of institute's phase-change material bag.
In said structure, form loop circuit heat pipe primarily of metal substrate, metal cover board and bend pipe, and metal substrate and metal cover board form evaporation cavity, evaporation cavity becomes platy structure, and bend pipe exposes the upper end of casing as condensation part.Then in evaporation cavity and battery pack, single power battery is well fitted, and improves radiating efficiency, and also conveniently installs., then loop circuit heat pipe and phase-change material inclusion are closed, both dispel the heat to battery pack jointly, which further improves radiating efficiency meanwhile.Phase-change material bag not only increases the passive temperature control effect of this heat abstractor, and can solve power battery at high temperature heat radiation, again can realize low-temperature heat insulation.
Preferably, for ensureing good capillary force and improving radiating efficiency, the two ends of described metal substrate are respectively equipped with the first groove and the second groove, the middle part of described metal substrate is provided with multiple 3rd groove, multiple described 3rd indention parallel arrangement forms the passage with capillary force, and the two ends of this passage are communicated with the first groove and the second groove respectively; Described metal cover board covers the first groove, the second groove and the 3rd groove simultaneously; 2 openends of described bend pipe are communicated with the second groove with the first groove respectively, and described passage and battery pack are just to setting.
Preferably, for improving the compactedness of structure, and described 3rd groove and the first texturearunaperpendicular are arranged, and described 3rd groove and the second texturearunaperpendicular are arranged simultaneously.This structure ensure that metal substrate is fully utilized, and this makes the 3rd groove arrangement compact; Meanwhile, during the 3rd groove close-packed arrays, also ensure that the 3rd groove forms passage and has good capillary force, from further increasing radiating efficiency and ensureing to start in time.
Preferably, the groove width of described 3rd groove is 1mm ~ 5mm, and the groove depth of described 3rd groove is 0.4mm ~ 0.8mm; Between adjacent 2 described 3rd grooves, have separating part, the width of this separating part is 1mm ~ 5mm, and the groove depth of the groove depth of described first groove, the groove depth of the second groove and the 3rd groove is all equal.This design, the width of the 3rd groove is less, thus passage can be made to have good capillarity.Meanwhile, groove depth equally also ensure that working medium can smooth outflow.
Preferably, for reducing distortion, be equipped with multiple projection in described first groove and the second groove, multiple projection is uniformly distributed; Described multiple projection is all welded with metal cover board.
Preferably, the cross section of described projection is square or circle.Concrete, the cross sectional shape of projection also can be other shapes, and is not limited to above-mentioned two kinds.
Described metal substrate is provided with the liquid injection port be communicated with evaporation cavity.Liquid injection port is used for injecting to evaporation cavity or pouring out working medium, then working medium can be changed, to adapt to different needs.The working medium injected by liquid injection port is the one of water, ethanol and propyl alcohol etc.
Preferably, for improving radiating efficiency and convenient installation further, described heat abstractor also comprises fin component, described fin component comprises fin seat and multiple fins, fin described in multiple is all fixed on a side of fin seat, the another side of described fin seat is provided with mounting groove, and described bend pipe embeds mounting groove, and described bend pipe welds with the another side of fin seat simultaneously.
Preferably, the inclusion that sealing drawn together by described phase-change material handbag and the phase-change material be positioned in inclusion, described phase-change material is paraffin.Adopt the inclusion packaging phase change material of sealing, not easily reveal, improve fail safe.
Preferably, for convenience of installation and maintenance, described casing comprises top cover and under casing, and described top cover covers the upper end of under casing, and form the container cavity being used for placing battery group, described top cover is provided with the through hole passed by bend pipe.
The utility model has following advantage relative to prior art:
1, the electrokinetic cell in the utility model have employed novel heat abstractor, this heat abstractor comprises metal substrate, metal cover board, bend pipe and phase-change material bag, metal substrate and metal cover board form the evaporation cavity of tabular, fitting area then between evaporation cavity and electrokinetic cell is large, and have employed phase-change material bag and add laminating degree between evaporation cavity and electrokinetic cell, greatly reduce contact heat resistance, improve radiating effect and radiating efficiency, uniform temperature is good simultaneously, and the office's temperature avoiding electrokinetic cell is too high.
2, in the utility model heat abstractor evaporation cavity in be provided with multiple 3rd groove form the passage with capillary force, this passage is utilized to replace the capillary structure of conventional heat pipe sintering formation, then the flow resistance that is subject in passage of working medium is little, can start rapidly, improve radiating efficiency, thus avoid that electrokinetic cell Yin Wendu is too high causes damage.
3, in the utility model, metal substrate first groove, the second groove and the 3rd groove all can adopt milling machine to process, the edge of metal cover board is connected with the edge seal of metal substrate, and metal cover board covers the first groove, the second groove and the 3rd groove simultaneously, thus formation evaporation cavity, the operations such as this does not need to carry out filling as traditional heat pipe, sintering, therefore manufacturing procedure is few, simple, reduces manufacturing cost, also has the feature lightweight, volume is little etc. simultaneously.
4, in the utility model the evaporation cavity of heat abstractor primarily of the formation such as metal substrate and metal cover board of tabular, and the surface smoothing of metal substrate and metal cover board, the then installation and maintenance of the laminating degree of metal substrate and electrokinetic cell this very convenient heat abstractor high.
5, the heat abstractor in the utility model has compact efficient, energy-saving and environmental protection, structure is simple, cost is low, volume is little, easy for installation, the stable and feature such as reliable, and be applicable to the electrokinetic cell of various model, versatility is good.
Accompanying drawing explanation
Fig. 1 is the structural representation with the electrokinetic cell of ultra-thin lightweight heat abstractor of the present utility model.
Fig. 2 is the front view of ultra-thin lightweight loop circuit heat pipe of the present utility model.Wherein, metal cover board and fin component do not draw.
Fig. 3 is the partial enlarged drawing at A place in Fig. 2.
Fig. 4 is the partial schematic diagram that the utility model metal substrate looks up direction.
Fig. 5 is the structural representation of the utility model fin component.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in further detail.
Embodiment 1
The electrokinetic cell with ultra-thin lightweight heat abstractor as shown in Figures 1 to 5, comprise at least 2 Battery pack groups 11 and casing 12, described battery pack 11 is positioned in casing 12, heat abstractor is provided with between adjacent 2 Battery pack groups 11, described heat abstractor comprises metal substrate 1, metal cover board, bend pipe 2 and phase-change material bag 13, the edge of described metal cover board is connected with the edge seal of metal substrate 1, and described metal cover board and metal substrate 1 form evaporation cavity, working medium is filled with in described evaporation cavity, 2 openends of described bend pipe 2 are all communicated with evaporation cavity, the upper end of described bend pipe 2 passes casing 12, in adjacent 2 Battery pack groups 11, described metal substrate 1 is close to one of them battery pack 11 surface, and metal cover board and bend pipe 2 lower end are close in a side of described phase-change material bag 13 simultaneously, and another battery pack 11 surface is close in the another side of institute's phase-change material bag 13.
Working medium adopt in water, ethanol or propyl alcohol any one.By liquid injection port 7 to evaporation cavity topping up, liquid filled ratio is 1 ~ 2 times of evaporation cavity, the present embodiment preferably 1.5 times.After completing topping up, use the inner chamber of vacuum equipment to evaporation cavity and bend pipe 2 to vacuumize, then close liquid injection port 7.And the metal material that metal substrate 1 and metal cover board use is copper, utilize the high-termal conductivity of copper.
For ensureing good capillary force and improving radiating efficiency, the two ends of metal substrate 1 are respectively equipped with the first groove 3 and the second groove 4 as described in Figure 2, the middle part of described metal substrate 1 is provided with multiple 3rd groove 5, the formation arranged in parallel of multiple described 3rd groove 5 has the passage 6 of capillary force, and the two ends of this passage 6 are communicated with the first groove 3 and the second groove 4 respectively; Described metal cover board covers the first groove 3, second groove 4 and the 3rd groove 5 simultaneously; 2 openends of described bend pipe 2 are communicated with the second groove 4 with the first groove 3 respectively, and described passage 6 and battery pack 11 are just to setting.Passage 6 and battery pack just to setting, this make the liquid refrigerant in passage and the distance between battery pack 11 short, then the transmission of heat is apart from short, improves radiating efficiency further.
For improving the compactedness of structure, described 3rd groove 5 be rectangular channel, and described 3rd groove 5 is vertical with the first groove 3 arranges, while described 3rd groove 5 is vertical with the second groove 4 arranges.This structure ensure that metal substrate 1 is fully utilized, and this makes the 3rd groove 5 arrange compact; Meanwhile, during the 3rd groove 5 close-packed arrays, also ensure that the 3rd groove 5 forms passage 6 and has good capillary force, from further increasing radiating efficiency and ensureing that heat radiation work starts in time.
The groove width of described 3rd groove 5 is 3mm, and the groove depth of described 3rd groove 5 is 0.6mm; Between adjacent 2 described 3rd grooves 5, have separating part 10, the width of this separating part 10 is 3mm, and the groove depth of the groove depth of described first groove 3, the groove depth of the second groove 4 and the 3rd groove 5 is all equal.This design, the width of the 3rd groove 5 is less, thus passage can be made to have good capillarity.Meanwhile, the first groove 3, second groove 4 is the same with the groove depth of the 3rd this three of groove 5 also ensure that working medium can smooth outflow.
For reducing distortion, as shown in Figure 2, be equipped with multiple projection 8 in described first groove 3 and the second groove 4, multiple projection 8 is uniformly distributed; Described multiple projection 8 is all welded with metal cover board.For convenience of processing, the cross section of this projection 8 is square.As shown in Figure 2, the multiple projections 8 being arranged in the first groove 3 are uniformly distributed into 3 row, and the multiple projections 8 being arranged in the second groove 4 are divided into 2 groups, wherein one group is uniformly distributed the downside of the second groove 4 with the form of a line, and another group is with 2 behavior one unit, 2 cell distribution are positioned at the left and right two ends of the second groove 4.
As shown in Figure 2, described metal substrate 1 is provided with the liquid injection port 7 be communicated with evaporation cavity.Liquid injection port is used for injecting to evaporation cavity or pouring out working medium, then working medium can be changed, to adapt to different needs.And this evaporation cavity is positioned on the right side of the upper end of metal substrate.
For improving radiating efficiency and convenient installation further, as shown in Figure 1 and Figure 5, described heat abstractor also comprises fin component 9, described fin component 9 comprises fin seat 91 and multiple fins 92, fin 92 described in multiple is all fixed on a side of fin seat 91, the another side of described fin seat 91 is provided with mounting groove 911, and described bend pipe 2 embeds mounting groove 911, and described bend pipe 2 welds with the another side of fin seat 91 simultaneously.
As shown in Figure 1, the inclusion that described phase-change material bag 13 comprises sealing and the phase-change material be positioned in inclusion, described phase-change material is paraffin.Adopt the inclusion packaging phase change material of sealing, not easily reveal, improve fail safe.
For convenience of installation and maintenance, as shown in Figure 1, described casing 12 comprises top cover 121 and under casing 122, and described top cover 121 covers the upper end of under casing 122, and form the container cavity being used for placing battery group 11, described top cover 121 is provided with the through hole 14 passed by bend pipe 2.
In real work, as Fig. 2, be positioned at metal substrate 1 upper end be the first groove 3, first groove 3 for gas collection, and what be positioned at metal substrate 1 lower end is that the second groove 4, the second groove 4 is for liquid storage.When electric automobile during traveling, battery pack 11 produces heat because of work, and these heats are absorbed by the liquid refrigerant being arranged in passage 6, then these liquid refrigerants are converted into gaseous working medium, gaseous working medium rises to the first groove 3, and this this gaseous working medium enters in bend pipe 2 from the first groove 3 and cools; Gaseous working medium after supercooling, reverts to liquid refrigerant again in bend pipe 2, and these liquid refrigerants enter the second groove 4 in bend pipe 2.The passage 6 formed due to the 3rd groove 5 has capillary force, then the liquid refrigerant being arranged in the second groove 4 is sucked up passage 6, and the liquid refrigerant being positioned at passage 6 is again heated and is converted into gaseous working medium, and these gaseous working mediums rise to the first groove 3 again.Working medium like this forms circulation by conversion that is liquid and gaseous state, thus realizes radiating effect, ensure that electrokinetic cell avoids the impact of self-heating, makes the sustainable effective work of electrokinetic cell.
Embodiment 2
The electrokinetic cell originally with ultra-thin lightweight heat abstractor except following technical characteristic with embodiment 1: the groove width of described 3rd groove is 3mm, and the groove depth of described 3rd groove is 0.5mm; Between adjacent 2 described 3rd grooves, have separating part, the width of this separating part is 3mm, and the groove depth of the groove depth of described first groove, the groove depth of the second groove and the 3rd groove is all equal.
Above-mentioned embodiment is preferred embodiment of the present utility model; can not limit the utility model; the any of other does not deviate from the technical solution of the utility model and the substitute mode of the change made or other equivalence, is included within protection range of the present utility model.
Claims (10)
1. one kind has the electrokinetic cell of ultra-thin lightweight heat abstractor, comprise at least 2 Battery pack group and casings, described battery pack is positioned in casing, it is characterized in that: between adjacent 2 Battery pack groups, be provided with heat abstractor, described heat abstractor comprises metal substrate, metal cover board, bend pipe and phase-change material bag, the edge of described metal cover board is connected with the edge seal of metal substrate, and described metal cover board and metal substrate form evaporation cavity, working medium is filled with in described evaporation cavity, 2 openends of described bend pipe are all communicated with evaporation cavity, the upper end of described bend pipe passes casing, in adjacent 2 Battery pack groups, described metal substrate is close to one of them battery surface, and metal cover board and bend pipe lower end are close in a side of described phase-change material bag simultaneously, and another battery surface is close in the another side of institute's phase-change material bag.
2. the electrokinetic cell with ultra-thin lightweight heat abstractor according to claim 1, it is characterized in that: the two ends of described metal substrate are respectively equipped with the first groove and the second groove, the middle part of described metal substrate is provided with multiple 3rd groove, multiple described 3rd indention parallel arrangement forms the passage with capillary force, and the two ends of this passage are communicated with the first groove and the second groove respectively; Described metal cover board covers the first groove, the second groove and the 3rd groove simultaneously; 2 openends of described bend pipe are communicated with the second groove with the first groove respectively, and described passage and battery pack are just to setting.
3. the electrokinetic cell with ultra-thin lightweight heat abstractor according to claim 2, is characterized in that: described 3rd groove and the first texturearunaperpendicular are arranged, and described 3rd groove and the second texturearunaperpendicular are arranged simultaneously.
4. the electrokinetic cell with ultra-thin lightweight heat abstractor according to claim 2, is characterized in that: the groove width of described 3rd groove is 1mm ~ 5mm, and the groove depth of described 3rd groove is 0.4mm ~ 0.8mm; Between adjacent 2 described 3rd grooves, have separating part, the width of this separating part is 1mm ~ 5mm, and the groove depth of the groove depth of described first groove, the groove depth of the second groove and the 3rd groove is all equal.
5. the electrokinetic cell with ultra-thin lightweight heat abstractor according to claim 2, is characterized in that: be equipped with multiple projection in described first groove and the second groove, multiple projection is uniformly distributed; Described multiple projection is all welded with metal cover board.
6. the electrokinetic cell with ultra-thin lightweight heat abstractor according to claim 5, is characterized in that: the cross section of described projection is square or circle.
7. the electrokinetic cell with ultra-thin lightweight heat abstractor according to claim 1, is characterized in that: described metal substrate is provided with the liquid injection port be communicated with evaporation cavity.
8. the electrokinetic cell with ultra-thin lightweight heat abstractor according to claim 1, it is characterized in that: described heat abstractor also comprises fin component, described fin component comprises fin seat and multiple fins, fin described in multiple is all fixed on a side of fin seat, the another side of described fin seat is provided with mounting groove, described bend pipe embeds mounting groove, and described bend pipe welds with the another side of fin seat simultaneously.
9. the electrokinetic cell with ultra-thin lightweight heat abstractor according to claim 1, is characterized in that: the inclusion that sealing drawn together by described phase-change material handbag and the phase-change material be positioned in inclusion, described phase-change material is paraffin.
10. the electrokinetic cell with ultra-thin lightweight heat abstractor according to claim 1, it is characterized in that: described casing comprises top cover and under casing, described top cover covers the upper end of under casing, and form the container cavity being used for placing battery group, described top cover is provided with the through hole passed by bend pipe.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420423616.5U CN204067519U (en) | 2014-07-29 | 2014-07-29 | A kind of electrokinetic cell with ultra-thin lightweight heat abstractor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420423616.5U CN204067519U (en) | 2014-07-29 | 2014-07-29 | A kind of electrokinetic cell with ultra-thin lightweight heat abstractor |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104143669A (en) * | 2014-07-29 | 2014-11-12 | 华南理工大学 | Power battery with ultra-thin lightweight heat dissipation devices |
| CN107634164A (en) * | 2017-09-29 | 2018-01-26 | 湘潭大学 | A kind of battery thermal management system combined based on microchannel thermotube and phase-change material |
| CN109346794A (en) * | 2018-08-15 | 2019-02-15 | 江苏大学 | A kind of lithium battery module based on pulsating heat pipe cooling |
| CN111106411A (en) * | 2019-12-27 | 2020-05-05 | 中国矿业大学 | Power battery module based on loop heat pipe and phase-change material coupling cooling |
| CN114597545A (en) * | 2022-03-21 | 2022-06-07 | 奇瑞汽车股份有限公司 | Battery cooling system, automobile and control method |
-
2014
- 2014-07-29 CN CN201420423616.5U patent/CN204067519U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104143669A (en) * | 2014-07-29 | 2014-11-12 | 华南理工大学 | Power battery with ultra-thin lightweight heat dissipation devices |
| CN107634164A (en) * | 2017-09-29 | 2018-01-26 | 湘潭大学 | A kind of battery thermal management system combined based on microchannel thermotube and phase-change material |
| CN109346794A (en) * | 2018-08-15 | 2019-02-15 | 江苏大学 | A kind of lithium battery module based on pulsating heat pipe cooling |
| CN111106411A (en) * | 2019-12-27 | 2020-05-05 | 中国矿业大学 | Power battery module based on loop heat pipe and phase-change material coupling cooling |
| CN114597545A (en) * | 2022-03-21 | 2022-06-07 | 奇瑞汽车股份有限公司 | Battery cooling system, automobile and control method |
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