CN109860949B - Battery safety heat management device - Google Patents
Battery safety heat management device Download PDFInfo
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- CN109860949B CN109860949B CN201910059786.7A CN201910059786A CN109860949B CN 109860949 B CN109860949 B CN 109860949B CN 201910059786 A CN201910059786 A CN 201910059786A CN 109860949 B CN109860949 B CN 109860949B
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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 invention discloses a battery safety heat management device, which comprises a heat dissipation device, a recovery device and a safety device, wherein the heat dissipation device comprises a liquid storage bin which is attached to the surface of a battery in a heat conduction manner; the recovery device comprises a flow guide pipe connected with the liquid storage bin and a condensing fin arranged on the flow guide pipe, and the liquid storage bin is filled with a phase-change material; the safety device comprises a safety bin which is arranged above the battery and is filled with fire extinguishing agents, the inner wall of the safety bin is made of heat insulating materials, the bottom of the inner wall of the safety bin is provided with an opening which can be buckled, and the opening is covered by a cover plate made of fusible materials. The battery safety heat management device can take protective measures in time when the overall temperature of the battery is overhigh, avoid safety accidents, balance the temperature difference inside the single battery and between the single batteries, reduce heat accumulation, prolong the service life of the battery and provide a good working temperature environment for the single battery.
Description
Technical Field
The invention relates to the field of batteries of electric vehicles, in particular to a battery safety heat management device.
Background
Along with diversification of the automobile industry, environmental problems are increasingly severe, the new energy automobile industry develops rapidly, wherein the electric automobile has smaller influence on the environment compared with the traditional automobile, the application range is wider and wider, the electric automobile is a vehicle which takes a vehicle-mounted power supply as power and runs by using motor-driven wheels, and meets various requirements of road traffic and safety regulations, and the battery is used as the heart of the electric automobile and is the key for development of the electric automobile industry.
The battery management system is the important tie of connecting on-vehicle power battery and electric automobile, because electric automobile is at the in-process that traveles, the battery can produce a large amount of heats, if can not be quick effectual dispel the heat to the battery to and the inside, the difference in temperature between the battery cell of balanced battery cell, will cause the heat to pile up, influence battery life-span, serious still can cause the battery explosion.
The battery thermal management is a new technology which is based on the material science, the electrochemistry, the heat transfer science, the molecular dynamics and other multidisciplinary fields and is established based on the optimal charging and discharging temperature interval of a specific battery through reasonable design according to the influence of temperature on the battery performance, so as to solve the problem of thermal accumulation caused by the operation of the battery under the condition of overhigh temperature and improve the overall performance of the battery.
New energy automobile need not petroleum resources, just can travel by the electric energy, and environmental protection and energy-conservation rely on battery work to inevitably need face the problem that the battery discharge in-process produced a large amount of heats, produce conflagration even explosion when serious, consequently, the security problem of car battery does not change a little.
Because electric automobile is in the charging or the in-process of traveling, the battery can produce a large amount of heat, if can not be fast effectual dispel the heat to the battery to and the inside of balanced battery cell, the difference in temperature between the battery cell will cause the heat to pile up, influences the battery life-span, and serious still can cause the battery explosion.
Therefore, in order to solve the above problems, a battery safety heat management device is needed, which can take timely protective measures when the overall temperature of the battery is too high, avoid safety accidents, balance the temperature difference inside the single battery and between the single batteries, reduce heat accumulation, prolong the service life of the battery, and provide a good working temperature environment for the single battery.
Disclosure of Invention
In view of the above, the present invention aims to overcome the defects in the prior art, and provide a battery safety thermal management device, which can quickly equalize the temperature difference between the inside of a single battery and the single battery, reduce thermal accumulation, prolong the service life of the battery, provide a good working temperature environment for the single battery, and has a safety protection device to prevent the battery from exploding at high temperature, thereby ensuring the safety of drivers and passengers.
The invention relates to a battery safety heat management device, which comprises a heat dissipation device, a recovery device and a safety device, wherein the heat dissipation device comprises a liquid storage bin which is attached to the surface of a battery in a heat conduction manner, a low-boiling-point liquid phase-change material is contained in the liquid storage bin, the liquid phase-change material evaporates and absorbs heat generated by the battery when in heat conduction contact with the battery, and the phase-change material which absorbs heat and evaporates to form a gas enters a flow guide pipe; the recovery device comprises a flow guide pipe connected with the liquid storage bin and condensation fins arranged on the flow guide pipe, the gaseous phase-change material enters the flow guide pipe, the flow guide pipe is provided with a plurality of condensation fins which can rapidly dissipate and liquefy the gaseous phase-change material, so that the phase-change material is recovered to be in a liquid state and flows back to the liquid storage bin along the flow guide pipe, the cyclic utilization of the phase-change material and the reduction of the temperature of the battery are realized, and the liquid storage bin is filled with the phase-change material; the safety device comprises a safety bin which is arranged above the battery and is provided with a fire extinguishing agent, the inner wall of the safety bin is made of a heat insulating material, the bottom plate is provided with a hole which can be buckled, the hole is covered by a cover plate made of a fusible material, the safety bin is positioned in a cavity formed by the liquid storage bin and the recovery device, the lower part of the safety bin is tightly attached to the inner wall of the flow guide pipe by a bin bottom plate to form a closed safety bin, the fire extinguishing agent is arranged in the safety bin, and the bottom plate of the bin is provided with a buckled hole made of the fusible material. The cover plate on the opening is made of a fusible material and is tightly buckled with the buckle, when the heat release temperature of the battery reaches the limited safe temperature or the automobile vibration threatens the safe operation of the battery, the cover plate can be melted or is opened by vibrating and extruding the buckle, so that the fire extinguishing agent falls down to extinguish the fire of the battery, and the fire extinguishing agent falls down to extinguish the fire of the battery, thereby preventing the explosion of the battery.
Further, the stock solution storehouse is flat structure, with the wall both sides spraying graphite alkene layer of battery surface laminating, other walls scribble the thermal insulation coating, the stock solution storehouse is the platykurtic, be located the recovery unit below, inner structure cavity, it has liquid low boiling phase change material to fill, place in the battery cell both sides, the inner wall is parallel and the laminating with the battery cell body, highly be slightly higher than the battery cell height, and the inner wall both sides scribble the graphite alkene layer that the heat conductivity is extremely strong, do benefit to the heat dissipation of battery, the outer wall scribbles the thermal insulation coating, prevent thermal interference between the two batteries. .
Further, the honeycomb duct with the stock solution storehouse shape suits, upwards forms the blind pipe, because the motion after liquid is heated the evaporation and forms gas is ascending, and the honeycomb duct upwards forms the blind end, just in time accords with gaseous phase change material's motion for gaseous phase change material can obtain fully cooling liquefaction in the honeycomb duct, flows back to the stock solution storehouse once more after becoming liquid, accomplishes whole thermal cycle.
Further, the stock solution storehouse is the flat structure that is a little higher than the battery height, and the phase change material of inside splendid attire low boiling point, the highly a little higher than the battery in stock solution storehouse can carry out comprehensive cooling to the battery surface, combines to add phase change material simultaneously how much can also satisfy the user demand of more not co-altitude batteries, and the commonality is stronger.
Further, the blind end top of honeycomb duct is provided with annotates the liquid mouth, can add phase change material or coolant liquid in the stock solution storehouse through this notes liquid mouth, guarantees battery safety heat management device's normal use.
Furthermore, the honeycomb duct is connected with the liquid storage bin through the variable cross section, and plays a role in throttling when a phase-change material is added or reflows, so that splashing is avoided.
Furthermore, the return pipes corresponding to the liquid storage bins on the opposite surfaces of the batteries are mutually close to form a blind end, and the return pipes on the two sides of each single battery are communicated to form the blind end, so that the temperatures on the two sides of the batteries can be balanced, effective heat balance is achieved, and the good working environment of the batteries is ensured.
Further, safety bin is located between battery and the honeycomb duct, has certain clearance with the battery top surface, and safety bin is located the cavity in the middle of stock solution storehouse and heat abstractor, and the inside fire extinguishing agent that is equipped with of safety bin, and buckle formula trompil made by fusible material is seted up to the storehouse bottom plate, and when battery high temperature or the vibrations of traveling threatened battery safe operation, the trompil can melt or receive vibrations extrusion buckle and open, made the fire extinguishing agent fall be used for putting out a fire of battery, prevented the battery explosion, guaranteed safety.
The invention has the beneficial effects that: the invention discloses a battery safety heat management device, which is used for quickly cooling a battery through a low-boiling-point phase-change material, is provided with a recovery device for cooling, liquefying and recovering the vaporized phase-change material, realizes the cyclic utilization of the phase-change material, is very environment-friendly, is provided with a safety device which does not need to be controlled on the basis, and ensures that the battery can reliably work without safety accidents such as explosion and the like.
Drawings
The invention is further described below with reference to the following figures and examples:
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the structure of the present invention without a battery mounted thereon;
FIG. 3 is a schematic view of the bottom plate structure of the present invention;
FIG. 4 is a schematic view of the open pore structure of the present invention.
Detailed Description
Fig. 1 is a schematic view of the overall structure of the present invention, fig. 2 is a schematic view of the structure without a battery of the present invention, fig. 3 is a schematic view of the structure of the bottom plate of the present invention, fig. 4 is a schematic view of the structure with an opening of the present invention, as shown in the drawings, the battery safety heat management device in this embodiment includes a heat dissipation device, a recovery device and a safety device, the heat dissipation device includes a liquid storage bin 1 attached to the surface of the battery 2 in a heat conducting manner, the liquid storage bin 1 contains a low-boiling-point liquid phase-change material, the liquid phase-change material evaporates and absorbs heat generated by the battery 2 when in heat conducting contact with the battery 2, and the phase-change material evaporates and turns into a gaseous state after absorbing heat enters a flow guide tube 4; the recovery device comprises a flow guide pipe 4 connected to the liquid storage bin 1 and condensing fins 3 arranged on the flow guide pipe 4, the gaseous phase-change material enters the flow guide pipe 4, the flow guide pipe 4 is provided with a great number of condensing fins 3 which can rapidly dissipate and liquefy the gaseous phase-change material, so that the phase-change material is recovered to be in a liquid state and flows back to the liquid storage bin 1 along the flow guide pipe 4, the cyclic utilization of the phase-change material and the reduction of the temperature of the battery 2 are realized, and the liquid storage bin 1 is filled with the phase-change material; safety device is including setting up the safety bin 5 that is equipped with the fire extinguishing agent in battery 2 top, 5 inner walls in safety bin are made by the heat insulating material, and bottom plate 6 sets up the trompil 61 that has buckle 62, but trompil 61 covers by the apron 63 that fusible material made, and safety bin 5 is located the cavity that stock solution storehouse 1 and recovery unit formed, and the lower part is closely laminated by storehouse bottom plate 6 and honeycomb duct 4 inner wall and is formed and seal safety bin 5, and safety bin 5 is inside to be equipped with the fire extinguishing agent, and bottom plate 6 is equipped with buckle formula trompil 61 by fusible material under the storehouse. The cover plate 63 on the opening 61 is made of a fusible material and is tightly fastened with the buckle 62, when the heat release temperature of the battery 2 reaches a limited safe temperature or the safe operation of the battery 2 is threatened by the vibration of the automobile, the cover plate 63 can be melted or opened by pressing the buckle 62 by the vibration, so that the fire extinguishing agent falls down for extinguishing the battery 2, and the fire extinguishing agent falls down for extinguishing the battery 2 to prevent the explosion of the battery 2.
In this embodiment, stock solution storehouse 1 is the flat structure, with the wall both sides spraying graphite alkene layer of battery 2 surface laminating, other walls scribble the thermal insulation coating, stock solution storehouse 1 is the platykurtic, be located the recovery unit below, inner structure cavity, it has liquid low boiling phase change material to fill, place in 2 both sides of battery cell, the inner wall is parallel and the laminating with 2 cell bodies of battery, it is highly slightly higher than 2 height of battery cell, and the inner wall both sides scribble the graphite alkene layer that the heat conductivity is extremely strong, do benefit to the heat dissipation of battery 2, the outer wall scribbles the thermal insulation coating, prevent thermal interference between two battery 2. .
In this embodiment, honeycomb duct 4 with stock solution storehouse 1 shape suits, upwards forms the blind pipe, because the motion after liquid is heated the evaporation and forms gas is ascending, honeycomb duct 4 upwards forms the blind end, just in time accords with gaseous phase change material's motion for gaseous phase change material can obtain fully cooling liquefaction in honeycomb duct 4, flows back to stock solution storehouse 1 once more after becoming liquid, accomplishes whole thermal cycle.
In this embodiment, stock solution storehouse 1 is the flat structure that is a little higher than battery 2 height, and the phase change material of inside splendid attire low boiling, and the height of stock solution storehouse 1 is a little higher than battery 2, can carry out comprehensive cooling to battery 2 surface, combines to add phase change material simultaneously how much can also satisfy the user demand of more not co-altitude batteries 2, and the commonality is stronger.
In this embodiment, the blind end top of honeycomb duct 4 is provided with annotates the liquid mouth, can add phase change material or coolant liquid in the stock solution storehouse 1 through should annotating the liquid mouth, guarantees battery 2 safety heat management device's normal use.
In this embodiment, be connected through the variable cross section between honeycomb duct 4 and the stock solution storehouse 1, play the effect of throttling when adding phase change material or backward flow, avoid splashing.
In this embodiment, the back flow that the stock solution storehouse 1 of battery 2 relative surface corresponds draws close each other and forms a blind end, and the both sides back flow intercommunication of each battery cell 2 forms the blind end, can balance the temperature of battery 2 both sides, reaches effectual heat balance, guarantees battery 2's good operational environment.
In this embodiment, safety bin 5 is located between battery 2 and honeycomb duct 4, has certain clearance with battery 2 top surface, and safety bin 5 is located the cavity in the middle of stock solution storehouse 1 and the heat abstractor, and safety bin 5 is inside to be equipped with fire extinguishing agent, and buckle formula trompil 61 made by fusible material is seted up to storehouse bottom plate 6, and when battery 2 high temperature or the vibrations of traveling threatened battery 2 safe operation, apron 63 can melt or receive vibrations extrusion buckle 62 and open, makes fire extinguishing agent fall and is used for putting out a fire of battery 2, prevents the explosion of battery 2, guarantees safety.
Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.
Claims (6)
1. A battery safety thermal management apparatus, comprising: the battery recovery device comprises a heat dissipation device, a recovery device and a safety device, wherein the heat dissipation device comprises a liquid storage bin which is attached to the surface of a battery in a heat conduction manner; the recovery device comprises a flow guide pipe connected with the liquid storage bin and a condensing fin arranged on the flow guide pipe, and the liquid storage bin is filled with a phase-change material;
the safety device comprises a safety bin which is arranged above the battery and is filled with a fire extinguishing agent, the inner wall of the safety bin is made of a heat insulating material, a bottom plate is provided with an opening which can be buckled, and the opening is covered by a cover plate made of a fusible material; the flow guide pipe is matched with the liquid storage bin in shape and upwards forms a blind pipe; the return pipes corresponding to the liquid storage bins on the opposite surfaces of the batteries are mutually close to form a blind end.
2. The battery safety thermal management apparatus of claim 1, wherein: the stock solution storehouse is the flat structure, with the wall both sides spraying graphite alkene layer of battery surface laminating, other walls scribble the thermal insulation coating.
3. The battery safety thermal management apparatus of claim 1, wherein: the liquid storage bin is a flat structure slightly higher than the height of the battery, and is internally filled with a phase-change material with a low boiling point.
4. The battery safety thermal management apparatus of claim 3, wherein: and a liquid injection port is formed in the top of the blind end of the flow guide pipe.
5. The battery safety thermal management apparatus of claim 1, wherein: the honeycomb duct is connected with the liquid storage bin through a variable cross section.
6. The battery safety thermal management apparatus of claim 5, wherein: the safety bin is positioned between the battery and the flow guide pipe and has a certain gap with the top surface of the battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910059786.7A CN109860949B (en) | 2019-01-22 | 2019-01-22 | Battery safety heat management device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910059786.7A CN109860949B (en) | 2019-01-22 | 2019-01-22 | Battery safety heat management device |
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| Publication Number | Publication Date |
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| CN109860949A CN109860949A (en) | 2019-06-07 |
| CN109860949B true CN109860949B (en) | 2022-05-17 |
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| CN115000634B (en) * | 2022-07-15 | 2022-10-28 | 苏州睿锂物联科技有限公司 | Battery thermal management system beneficial to prolonging service life of battery |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103996887A (en) * | 2013-02-19 | 2014-08-20 | 微宏动力系统（湖州）有限公司 | Cell module with heat-radiation capability |
| CN103682517A (en) * | 2013-12-20 | 2014-03-26 | 华南理工大学 | Combined heat dissipation device of power battery pack |
| CN105703038B (en) * | 2016-04-11 | 2018-04-13 | 江苏科技大学 | A kind of battery module and heat dissipating method with flat-plate heat pipe |
| CN206098611U (en) * | 2016-09-18 | 2017-04-12 | 广东精进能源有限公司 | Square battery module of large capacity dispels heat safely |
| WO2018103305A1 (en) * | 2016-12-09 | 2018-06-14 | 航天特种材料及工艺技术研究所 | Thermal management material and applications thereof in thermal management module of cylindrical battery |
| CN206401468U (en) * | 2016-12-20 | 2017-08-11 | 郑州宇通客车股份有限公司 | A kind of electric automobile and its battery heat dissipation device |
| FR3063137B1 (en) * | 2017-02-23 | 2021-05-21 | Valeo Systemes Thermiques | HEAT EXCHANGER AND THERMAL REGULATION DEVICE WITH AT LEAST ONE ELECTRIC ENERGY STORAGE ELEMENT |
| CN207705352U (en) * | 2017-07-05 | 2018-08-07 | 季弘 | A kind of battery case with heat management function |
| CN107453001A (en) * | 2017-07-12 | 2017-12-08 | 浙江谷神能源科技股份有限公司 | A kind of lithium battery fire-retarding device |
| CN207530004U (en) * | 2017-11-28 | 2018-06-22 | 比亚迪股份有限公司 | Battery pack |
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Effective date of registration: 20230418 Address after: 430000, 1st Floor, Workshop 4, Wuhan Yiheng Heavy Industry Co., Ltd., Yangguang Avenue, Jiangxia District, Wuhan City, Hubei Province (Declaration Commitment Registration) Patentee after: China Energy Construction Energy Storage Technology (Wuhan) Co.,Ltd. Address before: 402247 No. 1 Fuxing Road, Shuang Fu New District, Jiangjin District, Chongqing. Patentee before: CHONGQING JIAOTONG University |
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