CN105244462A - Thermal management system of electromobile power battery pack - Google Patents
Thermal management system of electromobile power battery pack Download PDFInfo
- Publication number
- CN105244462A CN105244462A CN201510623355.0A CN201510623355A CN105244462A CN 105244462 A CN105244462 A CN 105244462A CN 201510623355 A CN201510623355 A CN 201510623355A CN 105244462 A CN105244462 A CN 105244462A
- Authority
- CN
- China
- Prior art keywords
- heat
- battery pack
- frame
- heat exchanger
- exchanger fin
- 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.)
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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
- H01M2220/00—Batteries for particular applications
- H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
-
- 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 thermal management system of an electromobile power battery pack. The thermal management system comprises cooling frameworks, heat exchange sheets and copper pipes. By using cooling framework support unit cells arranged in an array manner, heat exchange area is increased; and the heat exchange sheet is further arranged between each two rows of battery packs, the copper pipes loaded with air conditioning refrigerants pass through each heat exchange sheet, thus, an air conditioner in a vehicle can be used for heating or cooling the battery pack, the battery pack works in an optimal temperature range, the performance of the battery pack is further improved, and the service life of the battery pack is further prolonged.
Description
Technical field
The present invention relates to electric vehicle engineering field, be specifically related to a kind of heat management system of electric automobile power battery group.
Background technology
Lithium ion battery is widely used in electric automobile because of its superior performance, but meeting heat production in the lithium ion battery course of work, if dispelled the heat not in time, just easily causes the heat build-up of inside battery, even cause breaking down, security incident occurs.Temperature rises, and the internal resistance of cell reduces, and improves battery performance to a certain extent.But the rising of temperature, can accelerate inside battery heat-producing chemical reaction speed, cause the generation of more heat, may destroy battery and bring out thermal runaway.In the process of moving, because of the reason such as start-stop or speed change, electrokinetic cell load fluctuation rises and falls electric automobile, battery heat production dynamic change, and changeable pavement behavior and environmental condition mean radiating condition also dynamic change.The raising of electric automobile course continuation mileage will be sought development more great-capacity power battery, also require that battery possesses good fast charging and discharging ability, also may there is the situation such as battery abuse or accident (as clashed into) in actual use, these factors all can worsen battery heat removal system condition of work further.For battery pack, along with size increases, in pile, cell produces/dispels the heat unbalanced more outstanding, if thermal solution design is improper, very serious unbalanced Temperature Distribution can be produced between disparate modules and battery module each cell inner in battery pack, thus cause cell lack of balance to use, cause battery module premature failure further.Therefore, exploitation is effective Li-ion batteries piles heat management system rationally, for raising electric automobile fail safe and useful life most important.
At present, columniform lithium ion battery produces International standardization, such as 18650 and 26650 models.Because its production standard, cost is low, stable performance, the advantages such as good heat dissipation effect, is adopted as its power battery pack unit by many electric automobile enterprises.
Generally, lithium ion battery working temperature is at about 20 ~ 45 DEG C, its efficiency and life-span the best, but along with the change of environment residing for electric automobile, such as drive to the area of pole cold pole heat, and the raising of electric automobile working strength, traveling of such as bearing a heavy burden for a long time, lithium ion battery is usually in beyond optimum working temperature scope, and life-span and efficiency can not get ensureing.
Summary of the invention
For the deficiencies in the prior art, the object of the present invention is to provide a kind of heat management system of electric automobile power battery group, to improve life-span and the efficiency of power battery pack.
To achieve these goals, the technical scheme that the present invention takes is:
A heat management system for electric automobile power battery group, comprises heat-dissipating frame, copper pipe and heat exchanger fin, and heat-dissipating frame and heat exchanger fin are metal material;
An element cell of the corresponding power battery pack of each heat-dissipating frame, this element cell is column lithium ion battery, and each heat-dissipating frame comprises inner circle frame, outer square frame, and is arranged on the fin between inner circle frame and outer square frame; The internal diameter of inner circle frame and the external diameter of element cell match, and inwall can fit tightly with the outer wall of the element cell of inserting wherein; Outer square frame is pentagonal configuration, and described pentagonal configuration for splicing one with this foursquare limit for base and the pentagon that formed of the isosceles triangle that drift angle is 120 degree on square;
An element cell can be inserted in the inner circle frame of each heat-dissipating frame, by the profile of described outer square frame, multiple heat-dissipating frame with form the most closely seamless line up two row's battery pack, the centre-to-centre spacing of adjacent-cell battery in two row's battery pack is minimum in described the most closely referring to;
The both sides often organizing described two row's battery pack form two long planes, vertically some heat exchanger fins are placed between plane and plane, and some heat exchanger fins are arranged in order, the flanging at heat exchanger fin two ends supports the spacing between two panels heat exchanger fin, the plane that flanging is combined to form and two is arranged the plane that battery pack formed and is fitted, the same position of every sheet heat exchanger fin is provided with at least one hole, air-conditioning system in copper pipe connecting electric automobile, the refrigerant of air-conditioning flows into copper pipe, copper pipe is through the hole of every sheet heat exchanger fin, element cell and refrigerant pass through heat-dissipating frame, heat exchanger fin and copper pipe carry out heat exchange.
The heat management system of electric automobile power battery group of the present invention, utilize heat-dissipating frame support unit battery and arranged array, add heat exchange area, again heat exchanger fin is set between every two row's battery pack, and be loaded with the copper pipe of air conditioner coolant through every a slice heat exchanger fin, thus air-conditioning in car can be utilized to carry out heating or lowering the temperature for battery pack, battery pack is operated in optimum temperature range, and then improves the performance of battery pack and extend its life-span.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of heat-dissipating frame;
Fig. 2 is the schematic diagram of element cell;
Fig. 3 is the vertical view of heat-dissipating frame;
Fig. 4 is the assembling schematic diagram of element cell and heat-dissipating frame;
Fig. 5 is two row's battery pack that the heat-dissipating frame after being inserted in element cell is lined up;
Fig. 6 is the schematic diagram of heat exchanger fin;
Fig. 7 is the structural representation of the heat management system of electric automobile power battery of the present invention.
Embodiment
Below in conjunction with embodiment, the present invention is further illustrated.
The heat management system of this electric automobile power battery, as shown in Figure 7, comprising heat-dissipating frame 1, copper pipe 3 and heat exchanger fin 4,2 is column lithium ion element cells, is called for short element cell.
As can be seen from Figure 7, heat-dissipating frame has several, the corresponding element cell of each heat-dissipating frame.As shown in Figure 3, heat-dissipating frame 1 comprises inner circle frame 1b, fin 1d and outer square frame 1e, and inner circle frame 1b surrounds center hole 1a, is fin 1d and fin clearance 1c between inner circle frame 1b and outer square frame 1e.Wherein, as shown in Figure 1, 2, 3, the radius of center hole 1a is suitable with the external diameter of element cell 2, and element cell 2 can suitably coat heat-conducting cream or glue is closely nested in the middle of center hole 1a.Element cell 2 outer surface can insulate, and is conducive to heat to conduct to framework 1 from battery 2.And insulate at the outer square frame 1e outer surface of heat-dissipating frame 1.Outer square frame is pentagonal configuration, and this pentagonal configuration is not regular pentagon, but on square, splices one with this foursquare limit for base and the pentagon that formed of the isosceles triangle that drift angle is 120 degree.An element cell can be inserted in the inner circle frame of each heat-dissipating frame, by the profile of described outer square frame, multiple heat-dissipating frame with form the most closely seamless line up two row's battery pack, described form the most closely as shown in Figure 5, now, in two row's battery pack, the centre-to-centre spacing of adjacent-cell battery is minimum.Be conducive to heat exchange between each framework like this, and be combined into solid overall structure.Based on the demand of heat exchange, heat-dissipating frame must be metal material, copper during best selection, but for the consideration of economy, generally selects aluminium.
Heat transfer process in heat-dissipating frame is: the heat conduction of element cell 2 is to inner circle frame 1b, pass to fin 1d again, fin 1d and the air heat-exchange flowing through fin clearance 1c, heat is taken away by air, remaining heat passes to outer square frame 1e, if have the temperature difference between each frame of battery pack, heat by by housing 1e from the higher cell conducts of temperature to the lower unit of temperature, make battery pack temperature be tending towards even.
As shown in Figure 5, described two row battery pack both sides define two long planes, vertically heat exchanger fin is being placed between two row's battery pack described in two adjacent groups, as shown in Figure 6, there is flanging 4a at heat exchanger fin two ends, the height of flanging is just equal with the spacing between adjacent plate, and it is just in time identical to carry out contact heat-exchanging that the plane and two of the flanging of multiple heat exchanger fin composition arranges the plane that heat-dissipating frame forms.Heat exchanger fin and heat exchanger fin are stacked together, and the same position of every sheet heat exchanger fin is provided with aperture 4b, and copper pipe passes from aperture, and copper pipe connects the air-conditioning system in car, and air conditioner coolant flows through from copper pipe.
The course of work of this heat management system is: when the temperature of battery pack is too high, enter refrigerating mode, the heat that element cell 2 sends passes to heat-dissipating frame 1, heat-dissipating frame 1 transfers heat to heat exchanger fin 4 again, heat is caused copper pipe 3 by heat exchanger fin 4, and last heat is absorbed by the refrigerant flowing through copper pipe inside to be taken away.At this moment, heat management system is equivalent to the evaporator of air conditioning for automobiles, absorbs the heat that battery pack produces, and refrigerant vapor enters condenser and is distributed in atmospheric environment by heat after compressor of air conditioner compression.On the contrary, when battery pack temperature is lower, enter warm up mode, heat management system is the condenser of automotive air-conditioning system, by modes such as evaporator absorbing environmental heat or electric heating for battery pack provides heat.
Above-listed detailed description is illustrating for possible embodiments of the present invention, and this embodiment is also not used to limit the scope of the claims of the present invention, and the equivalence that all the present invention of disengaging do is implemented or changed, and all should be contained in the scope of the claims of this case.
Claims (4)
1. a heat management system for electric automobile power battery group, is characterized in that,
Comprise heat-dissipating frame, copper pipe and heat exchanger fin, and heat-dissipating frame and heat exchanger fin are metal material;
An element cell of the corresponding power battery pack of each heat-dissipating frame, this element cell is column lithium ion battery, and each heat-dissipating frame comprises inner circle frame, outer square frame, and is arranged on the fin between inner circle frame and outer square frame; The internal diameter of inner circle frame and the external diameter of element cell match, and inwall can fit tightly with the outer wall of the element cell of inserting wherein; Outer square frame is pentagonal configuration, and described pentagonal configuration for splicing one with this foursquare limit for base and the pentagon that formed of the isosceles triangle that drift angle is 120 degree on square;
An element cell can be inserted in the inner circle frame of each heat-dissipating frame, by the profile of described outer square frame, multiple heat-dissipating frame with form the most closely seamless line up two row's battery pack, the centre-to-centre spacing of adjacent-cell battery in two row's battery pack is minimum in described the most closely referring to;
The both sides often organizing described two row's battery pack form two long planes, vertically some heat exchanger fins are placed between plane and plane, and some heat exchanger fins are arranged in order, the flanging at heat exchanger fin two ends supports the spacing between two panels heat exchanger fin, the plane that flanging is combined to form and two is arranged the plane that battery pack formed and is fitted, the same position of every sheet heat exchanger fin is provided with at least one hole, air-conditioning system in copper pipe connecting electric automobile, the refrigerant of air-conditioning flows into copper pipe, copper pipe is through the hole of every sheet heat exchanger fin, element cell and refrigerant pass through heat-dissipating frame, heat exchanger fin and copper pipe carry out heat exchange.
2. the heat management system of electric automobile power battery group according to claim 1, is characterized in that,
Described heat-dissipating frame and described heat exchanger fin are aluminium.
3. the heat management system of electric automobile power battery group according to claim 1 and 2, is characterized in that,
The outer surface of described outer square frame scribbles insulating material.
4. the heat management system of electric automobile power battery group according to claim 1 and 2, is characterized in that,
The centre position of every sheet heat exchanger fin is provided with two holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510623355.0A CN105244462B (en) | 2015-09-25 | 2015-09-25 | The heat management system of electric automobile power battery group |
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| CN201510623355.0A CN105244462B (en) | 2015-09-25 | 2015-09-25 | The heat management system of electric automobile power battery group |
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| CN105244462A true CN105244462A (en) | 2016-01-13 |
| CN105244462B CN105244462B (en) | 2017-10-17 |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106159153A (en) * | 2016-08-29 | 2016-11-23 | 华霆（合肥）动力技术有限公司 | A kind of gripper shoe and battery modules |
| CN106450093A (en) * | 2016-11-30 | 2017-02-22 | 河南森源重工有限公司 | Liquid cooling and heating control box body for cylinder power battery |
| CN106450084A (en) * | 2016-10-10 | 2017-02-22 | 苏州协鑫集成储能科技有限公司 | Battery module and battery assembly |
| CN107154521A (en) * | 2016-03-03 | 2017-09-12 | 华东交通大学 | The temperature uniforming heat radiation device of lithium ion battery of electric automobile group |
| CN108417926A (en) * | 2017-02-09 | 2018-08-17 | 浙江三花汽车零部件有限公司 | Power battery assembly and electric vehicle |
| CN108832067A (en) * | 2018-06-25 | 2018-11-16 | 安徽相源新能源有限公司 | A kind of water proof radiating lithium battery group |
| CN110994068A (en) * | 2019-11-28 | 2020-04-10 | 重庆长安新能源汽车科技有限公司 | Integrated power battery cooling structure and power battery |
| CN111641003A (en) * | 2019-03-01 | 2020-09-08 | 中国科学院广州能源研究所 | Thermal management system for power battery pack |
| CN112026543A (en) * | 2019-01-09 | 2020-12-04 | 比亚迪股份有限公司 | Power battery pack, energy storage device and electric vehicle |
| US11462781B2 (en) * | 2019-06-25 | 2022-10-04 | Aisin Corporation | Battery storage case |
| US11955651B2 (en) | 2019-01-09 | 2024-04-09 | Byd Company Limited | Power battery pack and electric vehicle |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107154521A (en) * | 2016-03-03 | 2017-09-12 | 华东交通大学 | The temperature uniforming heat radiation device of lithium ion battery of electric automobile group |
| CN106159153B (en) * | 2016-08-29 | 2019-11-05 | 华霆（合肥）动力技术有限公司 | A kind of support plate and battery modules |
| CN106159153A (en) * | 2016-08-29 | 2016-11-23 | 华霆（合肥）动力技术有限公司 | A kind of gripper shoe and battery modules |
| CN106450084A (en) * | 2016-10-10 | 2017-02-22 | 苏州协鑫集成储能科技有限公司 | Battery module and battery assembly |
| CN106450093A (en) * | 2016-11-30 | 2017-02-22 | 河南森源重工有限公司 | Liquid cooling and heating control box body for cylinder power battery |
| CN108417926A (en) * | 2017-02-09 | 2018-08-17 | 浙江三花汽车零部件有限公司 | Power battery assembly and electric vehicle |
| CN108417926B (en) * | 2017-02-09 | 2020-12-01 | 浙江三花汽车零部件有限公司 | Power battery pack and electric automobile |
| CN108832067A (en) * | 2018-06-25 | 2018-11-16 | 安徽相源新能源有限公司 | A kind of water proof radiating lithium battery group |
| CN112026543A (en) * | 2019-01-09 | 2020-12-04 | 比亚迪股份有限公司 | Power battery pack, energy storage device and electric vehicle |
| US11955651B2 (en) | 2019-01-09 | 2024-04-09 | Byd Company Limited | Power battery pack and electric vehicle |
| CN111641003A (en) * | 2019-03-01 | 2020-09-08 | 中国科学院广州能源研究所 | Thermal management system for power battery pack |
| US11462781B2 (en) * | 2019-06-25 | 2022-10-04 | Aisin Corporation | Battery storage case |
| CN110994068A (en) * | 2019-11-28 | 2020-04-10 | 重庆长安新能源汽车科技有限公司 | Integrated power battery cooling structure and power battery |
| CN110994068B (en) * | 2019-11-28 | 2022-11-04 | 重庆长安新能源汽车科技有限公司 | Integrated power battery cooling structure and power battery |
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