CN208849041U - The power battery thermal management system of ultrathin aluminum strip heat pipe combination composite phase-change material - Google Patents

The power battery thermal management system of ultrathin aluminum strip heat pipe combination composite phase-change material Download PDF

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Publication number
CN208849041U
CN208849041U CN201821581314.5U CN201821581314U CN208849041U CN 208849041 U CN208849041 U CN 208849041U CN 201821581314 U CN201821581314 U CN 201821581314U CN 208849041 U CN208849041 U CN 208849041U
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heat pipe
thermal management
management system
strip heat
aluminium strip
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袁伟
方国云
鞠伟达
赵泽鹏
褚福建
汤勇
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South China University of Technology SCUT
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South China University of Technology SCUT
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

Abstract

The utility model discloses a kind of power battery thermal management systems of ultrathin aluminum strip heat pipe combination composite phase-change material, including cabinet, it is placed on the intracorporal several lithium battery bodies of the case, each maximum two sides of lithium battery bulk area are symmetrically provided with composite phase-change material and aluminium strip heat pipe, and the outdoor air cooling device that the cold end of the aluminium strip heat pipe extends to outside cabinet carries out reinforcing heat dissipation.The ultrathin aluminum strip heat pipe that the utility model uses, has saved cooling system occupied space;Phase-change material possesses huge latent heat of phase change, can radiate by phase-change material in low range charge and discharge, when high power charging-discharging, and can utilize latent heat of phase change reduction thermal shock;Outdoor air cooling device auxiliary heat dissipation is utilized simultaneously.Lithium battery body, composite phase-change material and the arrangement of aluminium strip heat pipe sandwich-type and fitting completely, radiating efficiency height.The utility model can effectively control the temperature of power battery, increase the service life and safety in utilization of battery, be with a wide range of applications.

Description

The power battery thermal management system of ultrathin aluminum strip heat pipe combination composite phase-change material
Technical field
The utility model relates to power battery thermal management technology fields more particularly to a kind of ultrathin aluminum strip heat pipe in conjunction with compound The power battery thermal management system of phase-change material.
Background technique
It is the advantages of electric car is because of its low pollution, low energy consumption, more next as energy crisis and environmental pollution are increasingly severe More it is valued by people.The charge-discharge characteristic of battery is closely related with temperature, if for a long time 50 DEG C or so at a temperature of into The cycle life of row charge and discharge, lithium battery can reduce by more than 50%.So if charge and discharge electro-temperature does not control in the appropriate range, The service life of battery will be greatly reduced.The safety accidents such as fire, explosion are resulted even in when in addition, being more than temperature condition.Cause This, the heat management of electric car is the problem of needing to be solved now.
With the raising of cell power density, traditional air-cooled requirement for not being able to satisfy battery thermal management;Water cooling can have Effect solves the problems, such as battery thermal management, but its device is complicated, and at high cost, energy consumption is high.Therefore, it is necessary to a kind of new battery thermal managements Mode.
Utility model content
To solve the above-mentioned problems, the utility model proposes a kind of the dynamic of ultrathin aluminum strip heat pipe combination composite phase-change material Power battery thermal management system.
The technical scheme that the utility model is provided is as follows:
A kind of power battery thermal management system of ultrathin aluminum strip heat pipe combination composite phase-change material, including cabinet, equably The intracorporal several lithium battery bodies of the case are placed in, the maximum two sides of area of each lithium battery body are symmetrically close to Be provided with composite phase-change material and aluminium strip heat pipe, the cold end of the aluminium strip heat pipe extend to the outdoor air cooling device outside cabinet into Row strengthens heat dissipation.
Further, in the form of sheets, shell material is metallic aluminium to the aluminium strip heat pipe, and inside vacuumizes, and working medium is acetone.
Further, the aluminium strip heat pipe with a thickness of 1-2mm.
Further, the heat radiation power of the aluminium strip heat pipe is 10-20W, and operating temperature range is 0 DEG C -75 DEG C.
Further, the inside of the aluminium strip heat pipe has been equipped with the porous structure or very low power structure of capillarity, external Do insulation processing.
Further, the cold end of the aluminium strip heat pipe is provided with radiating fin.
Further, the outdoor air cooling device includes radiator fan, the temperature inspection for detecting lithium battery temperature Module, control module are surveyed, the control module is used for when temperature detecting module detects that lithium battery temperature is higher than setting value It opens the radiator fan to rotate by certain speed, accelerating the cold end of the aluminium strip heat pipe to radiate drops to battery temperature rationally In the range of.
Further, the temperature detecting module is thermocouple.
Further, the radiator fan is right against the cold end installation of the aluminium strip heat pipe, power 22-30W, and wind speed is 0-5m/s and by control module dynamic regulation.
Further, several lithium battery bodies, composite phase-change material, aluminium strip heat pipe and outdoor air cooling device are integrated into one Body formula module realizes high efficiency and heat radiation and light-weighted requirement.
The utility model is mainly used for the heat management of power battery, its advantage compared with other power battery thermal management systems It is:
1, radiating efficiency is high, and internal lithium battery and aluminium strip heat pipe are in close contact, and heat transmission is fast.
2, the application of composite phase-change material can be such that the rate of battery temperature raising and lowering reduces, and reduce the temperature of battery pack Difference improves temperature uniformity.
3, ultrathin aluminum strip heat pipe has the characteristics that density is low, small in size, high-efficient, will not make vehicle body matter while heat dissipation It measures excessive, meets efficient, light-weighted requirement.
Detailed description of the invention
Fig. 1: power battery thermal management system schematic device.
Fig. 2: power battery thermal management system heat pipe, battery and phase-change material are bonded partial schematic diagram.
1- composite phase-change material, 2- cabinet, 3- aluminium strip heat pipe, 4- lithium battery body, 5- radiating fin, 6- radiator fan.
Specific embodiment
To keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, below to the utility model reality The technical solution applied in example is clearly and completely described, it is clear that described embodiment is that a part of the utility model is real Example is applied, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not making Every other embodiment obtained, fall within the protection scope of the utility model under the premise of creative work.
As shown in Figure 1, a kind of power battery thermal management system of ultrathin aluminum strip heat pipe combination composite phase-change material, including case Body 2, several lithium battery bodies 4 being equably placed in the cabinet 2,4 appearance of lithium battery body are several shapes It in the lithium battery of cuboid, is made of anode, cathode, electrolyte, the connection type between lithium battery is series-parallel alternately connection.
The maximum two sides of area of each lithium battery body 4 are symmetrically provided with composite phase-change material 1 and aluminium strip Heat pipe 3, the outdoor air cooling device that the cold end of the aluminium strip heat pipe 3 extends to outside cabinet 2 carry out reinforcing heat dissipation.
In the form of sheets, with a thickness of 1-2mm, shell material is metallic aluminium to the aluminium strip heat pipe 3, and inside vacuumizes, working medium third Ketone is equipped with sintered porous structure inside the aluminium strip heat pipe 3 or very low power structure that plough is cut, plays capillarity, outside is left no room for manoeuvre Edge processing prevents from contacting generation short circuit with electrode.The heat radiation power of the aluminium strip heat pipe 3 is 10-20W, operating temperature range 0 DEG C -75 DEG C, hot end and battery are in close contact, and cold end extends, and cooperate outdoor air cooling device radiation.In addition, the aluminium strip heat pipe 3 Cold end be provided with radiating fin 5, strengthen heat dissipation.
The outdoor air cooling device includes radiator fan 6, the temperature detecting module for detecting lithium battery temperature, control Molding block, the temperature detecting module are thermocouple, and the control module is used to detect lithium battery when temperature detecting module Temperature is opened the radiator fan 6 when being higher than setting value and is rotated by certain speed, and the cold end of the aluminium strip heat pipe 3 is accelerated to radiate Drop to battery temperature in reasonable range.
The radiator fan 6 is right against the cold end installation of the aluminium strip heat pipe 3, power 22-30W, wind speed 0-5m/s And by control module dynamic regulation.
The course of work of outdoor air cooling device is that thermocouple detects battery body temperature, when battery temperature is apparently higher than When setting value, 1 phase transformation of composite phase-change material absorbs heat, if battery temperature still rapid increase, the radiator fan 6 is opened It opens, the heat dissipation of the aluminium strip heat pipe 3 is accelerated to drop to cell body temperature in reasonable range.
The constituent of the composite phase-change material 1 include fusing point be 44-46 DEG C low melt point paraffin, expanded graphite and Fire retardant chlorinated paraffin, mass percent are respectively 70%-75%, 10%-25%, 1%-10%.After three's mixing, paraffin It is sufficiently mixed with the expanded graphite of bulk multi-hole, its latent heat of phase change, thermal conductivity can be improved and keeps one when temperature is higher Fixed shape does not generate leakage.
As shown in Fig. 2, the lithium battery body 4, composite phase-change material 1,3 three of aluminium strip heat pipe are combined closely, then are pressed from both sides Laminar arrangement, thermal conductivity are significantly improved, and radiating efficiency improves.
As shown in Figure 1, in the power battery thermal management system, the lithium battery body 4, aluminium strip heat pipe 3, composite phase-change The arrangement of 1 sandwich-type of material is integrated into a module with outdoor air cooling device, realizes high efficiency and heat radiation and light-weighted requirement.
In above-described embodiment, heat that the lithium battery body 4 is generated in low range charge and discharge by battery surface conduct to In composite phase-change material 1, since composite phase-change material 1 has huge latent heat of phase change, during undergoing phase transition, temperature is several It is constant, destruction of the thermal shock to cooling system can be effectively reduced, with the raising of charge-discharge magnification, heat is generated and constantly increases Add, aluminium strip heat pipe 3 cooperates outdoor air cooling device to shed heat, to guarantee that lithium battery body 4 always works in reasonable temperature model In enclosing.
Than the above described, the utility model can also have other embodiments, all to use equivalent replacement or wait The technical solution that effect transformation is formed is in the claims of the utility model.

Claims (10)

1. a kind of power battery thermal management system of ultrathin aluminum strip heat pipe combination composite phase-change material, which is characterized in that including case Body is equably placed in the intracorporal several lithium battery bodies of the case, and the maximum two sides of area of each lithium battery body are equal It is symmetrically provided with composite phase-change material and aluminium strip heat pipe, the cold end of the aluminium strip heat pipe extends to the outside outside cabinet Air cooling device carries out reinforcing heat dissipation.
2. power battery thermal management system according to claim 1, which is characterized in that the aluminium strip heat pipe in the form of sheets, shell Body material is metallic aluminium, and inside vacuumizes, and working medium is acetone.
3. power battery thermal management system according to claim 1, which is characterized in that the aluminium strip heat pipe with a thickness of 1- 2mm。
4. power battery thermal management system according to claim 1, which is characterized in that the heat radiation power of the aluminium strip heat pipe For 10-20W, operating temperature range is 0 DEG C -75 DEG C.
5. power battery thermal management system according to claim 1, which is characterized in that the inside of the aluminium strip heat pipe is equipped with The porous structure or very low power structure, outside for playing capillarity do insulation processing.
6. power battery thermal management system according to any one of claim 1 to 5, which is characterized in that the aluminium strip heat The cold end of pipe is provided with radiating fin.
7. power battery thermal management system according to claim 1, which is characterized in that the outdoor air cooling device includes Radiator fan, the temperature detecting module for detecting lithium battery temperature, control module, the control module are used to examine when temperature It surveys module and detects that open the radiator fan when lithium battery temperature is higher than setting value is rotated by certain speed, accelerates the aluminium Cold end heat dissipation with heat pipe drops to battery temperature in reasonable range.
8. power battery thermal management system according to claim 7, which is characterized in that the temperature detecting module is heat Galvanic couple.
9. power battery thermal management system according to claim 7, which is characterized in that the radiator fan is right against described The cold end of aluminium strip heat pipe is installed, power 22-30W, and wind speed is 0-5m/s and by control module dynamic regulation.
10. power battery thermal management system according to claim 1, it is characterised in that: several lithium battery bodies, it is compound Phase-change material, aluminium strip heat pipe and outdoor air cooling device become one formula module, realize high efficiency and heat radiation and light-weighted requirement.
CN201821581314.5U 2018-09-27 2018-09-27 The power battery thermal management system of ultrathin aluminum strip heat pipe combination composite phase-change material Active CN208849041U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110518309A (en) * 2019-09-03 2019-11-29 佛山科学技术学院 A kind of more type of cooling power battery heat-radiating devices

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110518309A (en) * 2019-09-03 2019-11-29 佛山科学技术学院 A kind of more type of cooling power battery heat-radiating devices
CN110518309B (en) * 2019-09-03 2021-01-26 佛山科学技术学院 Multi-cooling-mode power battery heat dissipation device

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