CN204011602U - A kind of phase-change heat radiating device for flat battery - Google Patents

A kind of phase-change heat radiating device for flat battery Download PDF

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Publication number
CN204011602U
CN204011602U CN201420429344.XU CN201420429344U CN204011602U CN 204011602 U CN204011602 U CN 204011602U CN 201420429344 U CN201420429344 U CN 201420429344U CN 204011602 U CN204011602 U CN 204011602U
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phase
heat
change
cavity
ventilation box
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CN201420429344.XU
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Chinese (zh)
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刘晓东
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State Energy Research (beijing) Steady-State Heat And Mass Transfer Technology Research Institute Co Ltd
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State Energy Research (beijing) Steady-State Heat And Mass Transfer Technology Research Institute Co Ltd
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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

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Abstract

The utility model discloses a kind of phase-change heat radiating device for flat battery, relate to new-energy automobile power battery technical field.Described phase-change heat radiating device comprises: the phase-change type multi-cavity heat pipe assembly (1) for transferring heat that is placed in each flat battery both sides; The cooling device being fixedly connected with the cooling section of multiple described phase-change type multi-cavity heat pipe assemblies (1).The utility model can, by a kind of phase-change type multi-cavity heat pipe is provided, utilize its thermal resistance value in heat conductive process to compare the characteristic that common aluminium radiator is low, saves material, weight reduction.By the equal temperature characteristics of phase-change type multi-cavity heat pipe, can prevent that flat battery local temperature is too high, and can heat rapidly flat battery, recover charge-discharge performance.In addition, the multi-cavity structure of phase-change type multi-cavity heat pipe can also be alleviated impact, improves the reliability of battery case.

Description

Phase change heat dissipation device for flat battery
Technical Field
The utility model relates to a new energy automobile power battery technical field, in particular to flat form power battery's of new energy automobile phase transition heat dissipation or temperature regulating device.
Background
At present, the heat dissipation of a common new energy automobile power battery is generally air cooling or water cooling, a layer of aluminum plate is clamped between the battery and the battery, and heat is conducted to a heat dissipation sheet through the aluminum plate and then taken away by air or water. Or a certain gap is left between the batteries, and the batteries are directly cooled by blowing air by a fan. The two methods have low cooling efficiency and poor temperature uniformity of the battery. By means of the heat conduction mode of the aluminum plate, the heat conduction coefficient of aluminum is about 200W/m.K, the heat transfer efficiency is low, heat cannot be conducted out in time, the material usage amount is large, and the whole heat dissipation system is heavy. If the fan is adopted to directly cool the battery, the clearance is narrow, the wind resistance is large, the cooling effect is poor, and the volume of the automobile is limited and cannot be too wide. How to quickly transfer the heat of the battery pack to the radiator can save space and reduce weight, and is a problem to be solved by technical personnel in the field.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a phase transition heat abstractor for platykurtic battery can solve the heat radiating efficiency of platykurtic battery low to and occupation space is big, weight is big, the inhomogeneous problem of temperature.
The utility model provides a phase transition heat abstractor for platykurtic battery, include:
phase-change multi-cavity heat pipe assemblies 1 arranged on two sides of each flat battery and used for transferring heat;
and the cooling device is fixedly connected with the cooling sections of the phase-change multi-cavity heat conduction pipe assemblies 1.
Preferably, the cooling device is a liquid cooling plate driven by a pump, wherein the cooling liquid is water, alcohol, oil or a mixture of a combination thereof.
Preferably, the cooling device comprises a plurality of cooling fins 2 and a ventilation box 3 which is provided with an air inlet and an air outlet and is opened on one side, and a plurality of cooling fins 2 are arranged in the ventilation box 3.
Preferably, the air inlet and the air outlet of the ventilation box 3 are arranged at two ends of the ventilation box 3 along a diagonal direction.
Preferably, a fixing plate 4 for fixing the ventilation box 3 is further included on the side of the heat sink 2 close to the heated section of the phase-change multi-cavity heat conduction pipe assembly 1.
Preferably, a flange for fixed connection to the fastening plate 4 is provided on the open side of the ventilation box 3.
Preferably, each group of phase-change multi-cavity heat conduction pipe assemblies 1 sequentially penetrate through the fixing plate 4 and the plurality of cooling fins 2 in the ventilation box 3, and are fixedly connected with the fixing plate 4 through interference fit and fixedly bonded with the plurality of cooling fins 2 in the ventilation box 3 through heat conduction glue.
Preferably, the heated section of the phase-change multi-cavity heat conduction pipe assembly 1 is inclined downwards in the horizontal directionWherein,
preferably, the heat conduction pipe assembly comprises a plurality of groups of the phase-change multi-cavity heat conduction pipe assemblies 1, and a space for installing each flat battery is arranged among the groups of the phase-change multi-cavity heat conduction pipe assemblies 1.
Compared with the prior art, the beneficial effects of the utility model reside in that: the phase-change multi-cavity heat conduction pipe can enable the temperature of the flat battery to be uniform, meanwhile, heat is led out of the flat battery, the structure of the heat dissipation device is simplified, and reliability is improved. In addition, the phase-change multi-cavity heat conducting pipe with the cavity can also achieve the effects of reducing weight and buffering impact.
Drawings
Fig. 1 is a perspective exploded view of a battery box according to an embodiment of the present invention;
fig. 2 is a perspective view of a phase change heat dissipation device according to an embodiment of the present invention;
fig. 3 is a combination diagram of a phase-change multi-cavity heat pipe assembly and a fixing plate of the phase-change heat dissipation device according to an embodiment of the present invention;
fig. 4 is a diagram of a phase-change multi-cavity heat pipe of a phase-change heat dissipation device according to an embodiment of the present invention;
fig. 5 is a heat sink diagram of a phase change heat dissipation device according to an embodiment of the present invention;
fig. 6 is a schematic view of a heat dissipating buckle of the phase change heat dissipating device according to an embodiment of the present invention;
fig. 7 is a schematic view of a heat dissipating tab of a phase change heat dissipating device according to an embodiment of the present invention;
fig. 8 is a diagram of a ventilation box of a phase change heat dissipation device according to an embodiment of the present invention;
fig. 9 is a schematic liquid cooling diagram of a phase change heat dissipation apparatus according to an embodiment of the present invention;
fig. 10 is a schematic view of a heating device of a phase-change heat dissipation device according to an embodiment of the present invention;
fig. 11 is an exploded view of a heating device of a phase-change heat dissipation device according to an embodiment of the present invention.
Detailed Description
The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, and it should be understood that the preferred embodiments described below are only for the purpose of illustrating and explaining the present invention, and are not intended to limit the present invention.
The utility model discloses an adopt phase transition formula multicavity heat pipe (promptly, have the soaking board of phase transition heat transfer characteristic), hug closely in the platykurtic battery surface, when the platykurtic battery generates heat, the inside working medium of phase transition formula multicavity heat pipe can vaporize rapidly and take away the heat, is assisted with forced air cooling or liquid cooling again, cools off the other end of multicavity heat pipe.
The phase-change type multi-cavity heat conduction pipe adopts a phase-change heat transfer principle, and heat is efficiently transferred in the area where the closed cavity of the phase-change type multi-cavity heat conduction pipe is located by means of the phase-change process of liquid, so that the heat transfer performance is improved by 10-20 times. Meanwhile, the phase-change multi-cavity heat conduction pipe is used as a heat conduction device of the flat battery pack and has the advantages of uniform temperature, light weight, good heat conduction and high reliability. And heating and air cooling or liquid cooling are assisted, so that the temperature uniformity of the flat battery can be greatly improved, and the temperature of the battery can be controlled within a proper range. Wherein, the cooling section of phase transition formula multicavity heat pipe can have multiple cooling methods, includes: natural air cooling, forced air cooling, liquid cooling or liquid cooling plate cooling filled with cooling liquid.
Fig. 1 is a perspective exploded view of a battery box provided in an embodiment of the present invention, as shown in fig. 1, the whole battery box is composed of a battery box cover 11, a plurality of flat batteries, and a phase change heat dissipation device. A plurality of flat batteries are arranged in intervals among a plurality of phase-change multi-cavity heat conduction pipe assemblies 1 of the phase-change heat dissipation device to form interval arrangement. The phase-change multi-cavity heat conduction pipe assembly 1 can be composed of one or more phase-change multi-cavity heat conduction pipes, and the heated section is inclined downwards in the horizontal directionWherein,and a plurality of radiating fins 2 are fixedly connected with the cooling section of each phase-change type multi-cavity heat conduction pipe assembly 1 respectively. The side of the heat dissipation assembly close to the heated section of the phase-change multi-cavity heat conduction pipe assembly 1 further comprises a fixing plate 4 for fixing the cooling device. Each group of phase-change multi-cavity heat conduction pipe assemblies 1 sequentially penetrate through a plurality of radiating fins 2 in the fixing plate 4 and the ventilation box 3, are fixedly connected with the fixing plate 4 through interference fit, and are fixedly bonded with the radiating fins 2 in the ventilation box 3 through heat conduction glue. Wherein, a plurality of fin 2 are settled in ventilation box 3, and fixed plate 4 plays the effect of fixed ventilation box 3 for ventilation box and phase transition formula multicavity heat pipe assembly 1 fixed connection. In addition to the cooling of the heat from the heat sink 2 by the fan, the cooling section of the phase change multi-chamber heat pipe assembly 1 can be cooled by a liquid cooled plate driven by a pump, wherein the cooling liquid is water, alcohol, oil or a mixture of the above 3 substances.
Based on practical application's convenient demand, can also carry out 90 upsets with whole phase transition heat abstractor for flat battery wherein is horizontal, and the electrode of flat battery is in one side, and phase transition formula multicavity heat pipe is vertical simultaneously or is certain angle with vertical direction, and its cooling end is on it.
Fig. 2 is a perspective view of a phase-change heat dissipation device according to an embodiment of the present invention, as shown in fig. 2, a plurality of phase-change multi-cavity heat pipe assemblies 1 are provided, and a space for installing each flat battery is provided between the plurality of phase-change multi-cavity heat pipe assemblies 1. Every group phase transition formula multicavity heat pipe subassembly 1 runs through the radiator unit in fixed plate 4 and the ventilation box 3 in proper order to utilize heat conduction glue to link to each other with the radiator unit in fixed plate 4 and the ventilation box 3 is fixed in proper order. The heat dissipation assembly is composed of four heat dissipation fins 2, and therefore, the cooling section of each group of phase-change multi-cavity heat conduction pipe assemblies 1 is fixedly connected with the four heat dissipation fins 2 in sequence.
Fig. 3 is a combination diagram of phase-change multi-cavity heat pipe assembly and fixing plate of the phase-change heat dissipation device, as shown in fig. 3, the phase-change multi-cavity heat pipe assembly 1 forms a certain angle with the horizontal plane and is connected to the fixing plate 4. In order to enhance the heat conductivity of the phase-change multi-cavity heat pipe, the phase-change multi-cavity heat pipe is usually disposed at an angle such that the heated section is lower than the cooled section. That is, the heated section of the phase-change multi-cavity heat pipe assembly 1 is inclined downward in the horizontal directionWherein,the connection mode can make full use of gravity to enable the working liquid in the phase-change type multi-cavity heat conduction pipe assembly to flow back to the bottom under the action of gravity, when the flat battery generates heat and the temperature rises, after the working liquid is heated, steam generated by vaporization can be directly diffused to a cooling section (namely, a low-temperature region), and meanwhile, the liquid can better flow back to a heated section under the auxiliary action of gravity, so that the heat transfer is realized.
Fig. 4 is a phase-change multi-cavity heat pipe diagram of the phase-change heat dissipation device provided by the embodiment of the present invention, as shown in fig. 4, the phase-change multi-cavity heat pipe utilizes the phase-change principle, and at least comprises a hollow airtight cavity with high heat conduction efficiency, and is filled with working liquid, so that when any position of the phase-change multi-cavity heat pipe is heated, the liquid is evaporated at the position to become gas, and simultaneously absorbs heat, and the gas is condensed into liquid at the cold position and emits heat at the same time. The condensed liquid flows back to the evaporation position under the action of gravity or capillary force and evaporates again to form a circulation. Thereby realizing the accelerated transfer and temperature equalization of the heat on the surface of the flat battery.
Fig. 5 is a heat dissipation plate diagram of a phase-change heat dissipation device according to an embodiment of the present invention, as shown in fig. 5, a heat dissipation assembly is formed by a plurality of heat dissipation plates, and the heat dissipation assembly is connected to a cooling section of the phase-change multi-cavity heat pipe assembly. And transferring the heat collected by the phase-change multi-cavity heat conduction pipe to the external air. Wherein, phase transition formula multicavity heat pipe subassembly and fin also can be fixed integrative. Fig. 6 is a schematic view of a heat dissipating buckle of the phase change heat dissipating device provided in the embodiment of the present invention, and fig. 7 is a schematic view of a heat dissipating fold of the phase change heat dissipating device provided in the embodiment of the present invention. As shown in fig. 6 and 7, the heat dissipation buckle 5 and the heat dissipation folding piece 6 for replacing the heat sink 2, and the heat dissipation buckle 5 and the heat dissipation folding piece 6 are respectively mounted in relation to the phase-change multi-cavity heat pipe assembly.
Fig. 8 is a ventilation box diagram of the phase change heat dissipation device provided by the embodiment of the present invention, as shown in fig. 6, the ventilation box has an air inlet and an air outlet, the air inlet and the air outlet are arranged at two ends of the ventilation box along the diagonal direction, and the ventilation box is single-sided open and is used for installing a plurality of heat dissipation assemblies therein. In addition, a circle of flanges for fixedly connecting with the fixing plate are arranged on the open side of the ventilation box. When the flat battery generates heat, the temperature rises, working liquid in the phase-change type multi-cavity heat conduction pipe assembly is heated, steam is generated through vaporization and is diffused to the cooling section, the heat is transmitted to the heat dissipation assembly composed of the heat dissipation fins, cold air with certain flow flows to the air outlet through the air inlet of the ventilation box, the heat is transmitted to the outside air in a forced convection mode, and therefore the effect of cooling the heat dissipation assembly is achieved.
Fig. 9 is a schematic liquid cooling diagram of a phase change heat dissipation device according to an embodiment of the present invention, as shown in fig. 9, in order to provide the phase change heat dissipation device for liquid cooling, the phase change heat dissipation device is a cavity liquid cooling plate 7 driven by a pump, and the cooling liquid in the cavity liquid cooling plate is water, alcohol, or oil, or a mixture of 3 substances. Wherein, every group phase transition formula multicavity heat pipe subassembly 1 runs through fixed plate 4 and cavity liquid cooling board 7 in proper order to utilize interference fit and fixed plate 4 fixed continuous, and utilize heat conduction glue and the fixed bonding of cavity liquid cooling board 7.
Fig. 10 is a schematic view of a heating device of a phase-change heat dissipation device provided by an embodiment of the present invention, and fig. 11 is an explosion diagram of a heating device of a phase-change heat dissipation device provided by an embodiment of the present invention, as shown in fig. 10 and fig. 11, the battery capacity can be reduced due to the too low temperature in some cold areas, and therefore, the battery box used also needs a heating device to control the battery temperature within a suitable range. Namely, a heating device is additionally arranged at the lowest position of the phase-change type multi-cavity heat conduction pipe, the heating device can be a heating plate 8, and heat is transferred to the battery by utilizing the excellent heat conduction capability of the phase-change type multi-cavity heat conduction pipe, so that the battery is heated, the temperature of the battery is kept in a certain range, and the temperature control effect is achieved.
To sum up, the utility model discloses following technological effect has: the phase-change multi-cavity heat conduction pipe can save materials and reduce weight by utilizing the characteristic that the heat resistance value of the phase-change multi-cavity heat conduction pipe is lower than that of a common aluminum radiator in the heat conduction process, can prevent the local overhigh temperature of the flat battery through the temperature equalizing characteristic of the phase-change multi-cavity heat conduction pipe, can quickly heat the flat battery, and can recover the charge and discharge performance. In addition, the multicavity structure of phase transition formula multicavity heat pipe can also be alleviated and is strikeed, improves the reliability of battery box.
Although the present invention has been described in detail, the present invention is not limited thereto, and those skilled in the art can make various modifications according to the principle of the present invention. Therefore, modifications made in accordance with the principles of the present invention should be understood to fall within the scope of the present invention.

Claims (9)

1. A phase change heat sink for a flat battery, comprising:
phase-change multi-cavity heat pipe assemblies (1) arranged on both sides of each flat battery and used for transferring heat;
and the cooling device is fixedly connected with the cooling sections of the phase-change multi-cavity heat conduction pipe assemblies (1).
2. The phase change heat sink of claim 1, wherein the cooling means is a liquid cooled plate driven by a pump, wherein the cooling liquid is water, or an alcohol, or an oil, or a combination thereof.
3. The phase change heat sink according to claim 1, wherein the cooling device comprises a plurality of heat dissipating fins (2) and a ventilation box (3) having an inlet and an outlet and being opened at one side, and the ventilation box (3) houses the plurality of heat dissipating fins (2).
4. The phase-change heat dissipating device according to claim 3, wherein the air inlet and the air outlet of the ventilation box (3) are provided at both ends of the ventilation box (3) in a diagonal direction.
5. The phase-change heat sink according to claim 3, further comprising a fixing plate (4) for fixing the ventilation box (3) on the side of the heat sink (2) close to the heated section of the phase-change multi-cavity heat pipe assembly (1).
6. The phase change heat sink according to claim 5, wherein a flange for fixed connection to the fixing plate (4) is provided at the open side of the ventilation box (3).
7. The phase-change heat dissipation device according to any one of claims 3-6, wherein each group of the phase-change multi-cavity heat conduction pipe assemblies (1) sequentially penetrates through the fixing plate (4) and the plurality of heat dissipation fins (2) in the ventilation box (3), and is fixedly connected with the fixing plate (4) by interference fit and fixedly bonded with the plurality of heat dissipation fins (2) in the ventilation box (3) by heat conduction glue.
8. The phase-change heat sink according to claim 1, wherein the heated section of the phase-change multi-cavity heat pipe assembly (1) is inclined downward in the horizontal directionWherein,
9. the phase-change heat dissipation device according to claim 1, comprising a plurality of sets of the phase-change multi-cavity heat pipe assemblies (1), wherein a space for mounting each flat battery is provided between the plurality of sets of the phase-change multi-cavity heat pipe assemblies (1).
CN201420429344.XU 2014-07-31 2014-07-31 A kind of phase-change heat radiating device for flat battery Expired - Lifetime CN204011602U (en)

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106329023A (en) * 2016-09-18 2017-01-11 广东工业大学 Battery module
CN106571499A (en) * 2015-10-08 2017-04-19 赵耀华 Thermal management system and method of cuboid battery pack
CN106684500A (en) * 2017-01-17 2017-05-17 北京新能源汽车股份有限公司 Thermal management system of battery module and electric automobile
CN106785236A (en) * 2015-11-23 2017-05-31 赵耀华 The heat management system and method for cylindrical cell group
CN108123080A (en) * 2017-12-19 2018-06-05 闵卫 It is a kind of to be used for daily emergent multifunctional lithium battery case
CN108292788A (en) * 2015-12-02 2018-07-17 株式会社自动网络技术研究所 Power storage module
CN108631024A (en) * 2018-04-28 2018-10-09 北京新能源汽车股份有限公司 Thermal management battery system, thermal management method and battery control device of automobile
CN110380157A (en) * 2019-08-21 2019-10-25 湘潭大学 A kind of battery thermal management system coupled based on liquid cooling and phase-change thermal storage
CN117254167A (en) * 2023-11-15 2023-12-19 安徽中科中涣智能装备股份有限公司 Low-energy-consumption energy-storage prefabricated cabin temperature control system

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106571499B (en) * 2015-10-08 2023-05-12 赵耀华 Thermal management system and method for cuboid battery pack
CN106571499A (en) * 2015-10-08 2017-04-19 赵耀华 Thermal management system and method of cuboid battery pack
CN106785236A (en) * 2015-11-23 2017-05-31 赵耀华 The heat management system and method for cylindrical cell group
CN106785236B (en) * 2015-11-23 2023-05-12 赵耀华 Thermal management system and method for cylindrical battery pack
CN108292788A (en) * 2015-12-02 2018-07-17 株式会社自动网络技术研究所 Power storage module
CN106329023A (en) * 2016-09-18 2017-01-11 广东工业大学 Battery module
CN106684500A (en) * 2017-01-17 2017-05-17 北京新能源汽车股份有限公司 Thermal management system of battery module and electric automobile
CN108123080A (en) * 2017-12-19 2018-06-05 闵卫 It is a kind of to be used for daily emergent multifunctional lithium battery case
CN108123080B (en) * 2017-12-19 2021-11-19 义乌市旻具五金工具有限公司 A multi-functional lithium cell case for daily emergent
CN108631024A (en) * 2018-04-28 2018-10-09 北京新能源汽车股份有限公司 Thermal management battery system, thermal management method and battery control device of automobile
CN110380157A (en) * 2019-08-21 2019-10-25 湘潭大学 A kind of battery thermal management system coupled based on liquid cooling and phase-change thermal storage
CN117254167A (en) * 2023-11-15 2023-12-19 安徽中科中涣智能装备股份有限公司 Low-energy-consumption energy-storage prefabricated cabin temperature control system
CN117254167B (en) * 2023-11-15 2024-02-20 安徽中科中涣智能装备股份有限公司 Low-energy-consumption energy-storage prefabricated cabin temperature control system

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