CN209641783U - A kind of battery two phase heat-radiation device based on heat pipe principle - Google Patents
A kind of battery two phase heat-radiation device based on heat pipe principle Download PDFInfo
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- CN209641783U CN209641783U CN201821395245.9U CN201821395245U CN209641783U CN 209641783 U CN209641783 U CN 209641783U CN 201821395245 U CN201821395245 U CN 201821395245U CN 209641783 U CN209641783 U CN 209641783U
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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 relates to a kind of battery two phase heat-radiation device based on heat pipe principle.The device includes condensation end and several evaporation ends that condensation end bottom is arranged in；The condensation end includes the first capillary wick for condensing cavity and side bottom in condensation chamber body being arranged in；The evaporation ends include the evaporation cavity being connected with condensation cavity and the second capillary wick being arranged on evaporation cavity inner wall；The top of the condensation cavity is equipped with cooling mechanism.From the above technical scheme, the utility model uses heat pipe principle, utilize the phase-change heat transfer of working medium, the heat of battery unit is converted to the latent heat of phase change of the working medium of filling in the device, and it exports latent heat of phase change quickly along evaporation ends and enters condensation end, heat exchange is carried out in condensation end and external radiating device, to realize effective heat dissipation to single battery unit.
Description
Technical field
The utility model relates to batteries of electric automobile technical field of heat dissipation, and in particular to a kind of battery based on heat pipe principle
Two phase heat-radiation device.
Background technique
It is found by the analysis to great number tested data, influence of the temperature to battery service performance is very significant.With
For the ferric phosphate lithium cell that optimum vehicle uses at this stage, optimum operating temperature range is high between 20-25 DEG C
When 45 DEG C, discharge capacity can be greatly promoted, and service time of battery is obviously shortened, and when being higher than 60 DEG C, battery will appear explosive combustion
Risk, when battery temperature is lower than 0 DEG C, battery charging efficiency will be severely impacted, so too high or too low temperature can all drop
The efficiency for charge-discharge of low battery.In addition, long-term non-uniform temperature also results in the inconsistent of battery performance, battery pack is influenced
Performance and the service life.Research shows that the rate temperature change of battery pack is larger and the temperature difference is larger be cause battery pack earlier period damage and
The main reason for thermal runaway.
Battery pack is that a large amount of single battery is assembled according to certain connection type, the heap of a large amount of battery cells
Product, easily causes heat in the accumulation of internal battery pack, so that internal battery pack temperature sharply increases, under the high temperature conditions, no
Only the service performance of power battery can have a greatly reduced quality, and service life and safety also will receive very big influence.Especially power battery
Safety be to determine its key point that can use on electric car, so taking effective radiating mode by battery pack
Internal heat quickly exports so that it is ten that each battery unit operating temperature of internal battery pack, which maintains safe handling temperature or less,
Divide important.
The type of cooling of existing battery pack mainly using air-cooled and two kinds of radiating modes of liquid cooling, simply may be used by air-cooled structure
It leans on, but its heat-sinking capability is limited, it is air-cooled to be increasingly unable to satisfy battery pack heat dissipation need with the promotion of electric energy energy density
It asks；Liquid-cooling heat radiation mode compares more air-cooled heat-sinking capability with higher, but needs mating cooling water circulation loop, and this
Two kinds of radiating modes are directed to battery pack and integrally radiate, and are not concerned with single battery heat derives problem.In spite of paper
And patent solves the heat derives of single battery using heat pipe scheme, but its solution is the mating heat pipe of single battery,
Be between heat pipe and heat pipe it is independently operated, hundreds and thousands of heat pipes are needed for entire battery pack, this, which is undoubtedly increased, is
The complexity of system reduces the reliability of entire battery system.
Utility model content
The purpose of this utility model is to provide a kind of battery two phase heat-radiation device based on heat pipe principle, the radiator
The deficiencies in the prior art are able to solve, realize effective heat dissipation of single battery unit.
To achieve the above object, the utility model uses following technical scheme:
A kind of battery two phase heat-radiation device based on heat pipe principle, if including condensation end and condensation end bottom is arranged in
Dry blowing originator；The condensation end includes the first capillary wick for condensing cavity and side bottom in condensation chamber body being arranged in；The steaming
Originator includes the evaporation cavity being connected with condensation cavity and the second capillary wick being arranged on evaporation cavity inner wall；It is described cold
The top of solidifying cavity is equipped with cooling mechanism.
Further, which further includes shell.
Further, air exhaust nozzle is offered on the condensation cavity.
Further, the cooling mechanism is air cooling equipment or liquid cooling apparatus；The air cooling equipment is fin blower, described
Liquid cooling apparatus is cold plate.
Further, offer several openings in first capillary wick, the both ends of the opening respectively with the second capillary
The both ends of core are connected.
Further, liquid working substance is filled in the evaporation cavity.
Further, the liquid working substance can be worked using water, acetone, ethyl alcohol, ammonium hydroxide etc. in battery operating temperature section
Any one.
From the above technical scheme, the utility model uses heat pipe principle, using the phase-change heat transfer of working medium, by battery list
The heat of member is converted to the latent heat of phase change of the working medium of filling in the device, and steam is quickly exported along evaporation ends into condensation
End carries out heat exchange in condensation end and external radiating device, to realize effective heat dissipation to single battery unit.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of radiator in the utility model；
Fig. 2 is the use state diagram of radiator in the utility model；
Fig. 3 is the operation principle schematic diagram of evaporation ends in the utility model；
Fig. 4 is the operation principle schematic diagram of condensation end in the utility model.
Wherein:
1, condensation end, 11, condensation cavity, the 12, first capillary wick, 2, evaporation ends, 21, evaporation cavity, the 22, second capillary
Core, 3, shell, 4, air-cooled/liquid cooling apparatus, 5, battery unit, 6, air exhaust nozzle.
Specific embodiment
The utility model is described further with reference to the accompanying drawing:
A kind of battery two phase heat-radiation device based on heat pipe principle as Figure 1-Figure 4, including condensation end 1 and setting
Several evaporation ends 2 in 1 bottom of condensation end.Condensation end 1 is rectangle cavity body structure.The length and number of evaporation ends 2 can bases
The number of battery unit 5 is adjusted.The evaporation ends 2 are laminated structure, and the upper end of evaporation ends 2 is connected to the bottom of condensation end 1
Portion, and the cavity of the cavity of evaporation ends 2 and condensation end 1 be connected to it is logical.When in use, between two adjacent evaporation ends 2
A battery unit 5 is placed respectively, and side wall of the left and right sides side wall of the battery unit respectively with two evaporation ends 2 fits.Together
When, it is bonded a battery unit 5 respectively on the side wall in two evaporation ends of outermost, 2 outside.Heat dissipation described in the utility model
Device includes condensation end and evaporation ends, wherein condensation end is cold end, and evaporation ends are hot end, and the utility model utilizes liquid working substance
Again in the phase transition process of cold end condensation after the evaporation of hot end, that is, the evaporation latent heat and the latent heat of condensation of liquid are utilized, keeps heat quick
Conduction.
The condensation end 1 includes condensation cavity 11 and the first capillary wick 12 that condensation 11 inside bottom of cavity is arranged in.
The evaporation ends 2 include the evaporation cavity 21 being connected with condensation cavity 11 and be arranged on 21 inner wall of evaporation cavity second
Capillary wick 22.The top of the condensation cavity 11 is equipped with cooling mechanism.First capillary wick and the second capillary wick are porous
Structure or groove structure.It is dynamic that first capillary wick 12 and the second capillary wick 22 can provide powerful circulation for liquid working substance
Power transports liquid working substance between condensation end 1 and evaporation ends 2.In order to make to condense in 1 inside top of condensation end to the cold
Liquid is more rapid to transport evaporation ends 1, and the utility model is provided with the first capillary wick 12 in the bottom inside of condensation cavity 11,
For Absorption And Transportation liquid working substance.The utility model, can be with liquid by using the first capillary wick 12 and the second capillary wick 22
The gravity collective effect of working medium itself, the back-flow velocity that enhancing liquid working substance flows back from condensation end 1 to evaporation ends 2.
Further, which further includes shell 3.The concrete shape of shell 3, which can according to need, to be designed.It can be
A shell is arranged in the outside of condensation end 1, and condensation end 1 is wrapped, is then arranged outside another in the outside of evaporation ends 2 again
Shell wraps evaporation ends 2；One shared shell can also be set in the outside of condensation end 1 and evaporation ends 2, make condensation end 1
It is located in the same shell with evaporation ends 2.Cooling mechanism fitting is located at the top of the shell of 1 over top of condensation end.
Further, air exhaust nozzle is offered on the condensation cavity 11.Air exhaust nozzle, for condensation cavity and evaporation cavity
Air suction process is carried out, the air exhaust nozzle is sealed after completing air suction process using welding manner, it is ensured that condensation cavity and evaporation cavity
The stabilization of air pressure in body.Preferably, the air exhaust nozzle uses copper pipe, after evacuation, air exhaust nozzle is flattened fusion welds envelope
Extremely, guarantee sealing.
Further, the cooling mechanism is air cooling equipment or liquid cooling apparatus 4；The air cooling equipment is fin blower, institute
Stating liquid cooling apparatus is cold plate.The cooling mechanism makes the temperature of condensation end cavity, especially for cooling down to condensation end
Condensing the temperature at the top of cavity reduces, so that the steam for entering condensation end cavity be made to become liquid to the cold.
Further, offer several openings in first capillary wick 12, the both ends of the opening respectively with second mao
The both ends of thin core 22 are connected.Design is connected to the first capillary wick and the second capillary wick logical in this way, can guarantee liquid transporting
Continuity.
Further, liquid working substance is filled in the evaporation cavity.The liquid working substance is low-boiling point liquid.It is preferred that
, the liquid working substance can be worked normally in battery operation temperature area using water, acetone, ethyl alcohol, ammonium hydroxide etc. any one.
The heat dissipating method of battery two phase heat-radiation device described in the utility model based on heat pipe principle are as follows:
(1) inside of condensation end 1 and evaporation ends 2 is pumped into 10-1~10-4The negative pressure of Pa.By by condensation end and evaporation ends
Inside be evacuated, there are two main purposes: being on the one hand to provide a clean environment to internal；Since circulatory mediator steams
Hair and liquefaction require a good environment, if filling medium in air, the impurity in air can make the course of work
At adverse effect, device performance is influenced.It on the other hand is to reduce internal filling boiling point of liquid, so that it is in the normal work of normal temperature state
Make (evaporation-condensation).
(2) suitable liquid working substance is injected into evaporation cavity 21, it, will be cold after liquid working substance is full of the second capillary wick 22
Solidifying cavity 11 and evaporation cavity 21 seal.At this point, all containing liquid working substance in evaporation cavity 21 and in the second capillary wick 22.
(3) the placing battery unit 5 between two adjacent evaporation ends 2, make the two sides of battery unit 5 respectively with two phases
Adjacent evaporation ends 2 fit, and are bonded a battery unit 5 respectively in the outside of outermost two evaporation ends 2.
(4) after battery unit 5 generates heat, heat enters evaporation by the side wall of evaporation ends 2 from 5 surface of battery unit
In end 2, increase the liquid working substance temperature in evaporation ends 2, after the temperature of liquid working substance rises to boiling point, liquid working substance becomes
Steam, steam is along the cavity that the cavity of evaporation ends 2 rises into condensation end 1, and the steam that each evaporation ends 2 generate is in condensation end
Collect in 1.
(5) under the action of being fitted in the cooling mechanism at 1 top of condensation end, the steam in condensation end 1 is on the top of condensation end 1
It is condensed into the cold liquid (liquid is liquid working substance) on the inside of portion, under the effect of gravity, a part drops onto downwards the liquid
In first capillary wick 11, another part is dropped onto downwards in the cavity of evaporation ends 2；Enter the liquid of the first capillary wick 11, edge
The first capillary wick 11 transport in the second capillary wick 22 in evaporation ends 2, to complete primary heat dissipation.Re-enter into evaporation
The cavity at end 2 and the liquid working substance of the second capillary wick 22 can steam in heat absorption again under the action of the heat that battery unit 5 generates
Hair, is radiated next time.The cavity of evaporation ends refers to that evaporation cavity removes the cavity except the second capillary wick.The cavity of condensation end
Refer to that condensation cavity removes the cavity except the first capillary wick.
Embodiment described above is only that preferred embodiments of the present invention are described, not practical to this
Novel range is defined, and under the premise of not departing from the spirit of the design of the utility model, those of ordinary skill in the art are to this
The various changes and improvements that the technical solution of utility model is made should all fall into the protection that the utility model claims book determines
In range.
Claims (7)
1. a kind of battery two phase heat-radiation device based on heat pipe principle, it is characterised in that: condensed including condensation end and setting
Hold several evaporation ends of bottom；The condensation end includes the first capillary for condensing cavity and side bottom in condensation chamber body being arranged in
Core；The evaporation ends include the evaporation cavity being connected with condensation cavity and the second capillary being arranged on evaporation cavity inner wall
Core；The top of the condensation cavity is equipped with cooling mechanism.
2. a kind of battery two phase heat-radiation device based on heat pipe principle according to claim 1, it is characterised in that: the device
It further include shell.
3. a kind of battery two phase heat-radiation device based on heat pipe principle according to claim 1, it is characterised in that: described cold
Air exhaust nozzle is offered on solidifying cavity.
4. a kind of battery two phase heat-radiation device based on heat pipe principle according to claim 1, it is characterised in that: described to dissipate
Heat engine structure is air cooling equipment or liquid cooling apparatus；The air cooling equipment is fin blower, and the liquid cooling apparatus is cold plate.
5. a kind of battery two phase heat-radiation device based on heat pipe principle according to claim 1, it is characterised in that: described
Several openings are offered in one capillary wick, the both ends of the opening are connected with the both ends of the second capillary wick respectively.
6. a kind of battery two phase heat-radiation device based on heat pipe principle according to claim 1, it is characterised in that: the steaming
It sends out and is filled with liquid working substance in cavity.
7. a kind of battery two phase heat-radiation device based on heat pipe principle according to claim 6, it is characterised in that: the liquid
Body working medium can be in any one of battery operating temperature section work using water, acetone, ethyl alcohol, ammonium hydroxide etc..
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821395245.9U CN209641783U (en) | 2018-08-28 | 2018-08-28 | A kind of battery two phase heat-radiation device based on heat pipe principle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821395245.9U CN209641783U (en) | 2018-08-28 | 2018-08-28 | A kind of battery two phase heat-radiation device based on heat pipe principle |
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| Publication Number | Publication Date |
|---|---|
| CN209641783U true CN209641783U (en) | 2019-11-15 |
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| CN201821395245.9U Active CN209641783U (en) | 2018-08-28 | 2018-08-28 | A kind of battery two phase heat-radiation device based on heat pipe principle |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109088128A (en) * | 2018-08-28 | 2018-12-25 | 中国电子科技集团公司第十六研究所 | A kind of battery two phase heat-radiation device and its heat dissipating method based on heat pipe principle |
| 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 |
| US20220363144A1 (en) * | 2021-05-17 | 2022-11-17 | Ford Global Technologies, Llc | Traction battery pack thermal management assembly |
-
2018
- 2018-08-28 CN CN201821395245.9U patent/CN209641783U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109088128A (en) * | 2018-08-28 | 2018-12-25 | 中国电子科技集团公司第十六研究所 | A kind of battery two phase heat-radiation device and its heat dissipating method based on heat pipe principle |
| 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 |
| CN111106411B (en) * | 2019-12-27 | 2021-06-15 | 中国矿业大学 | Power battery module based on loop heat pipe and phase-change material coupling cooling |
| US20220363144A1 (en) * | 2021-05-17 | 2022-11-17 | Ford Global Technologies, Llc | Traction battery pack thermal management assembly |
| US11772500B2 (en) * | 2021-05-17 | 2023-10-03 | Ford Global Technologies, Llc | Traction battery pack thermal management assembly |
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