CN104332674B - Lithium ion battery small-sized heat pump heat management system and application thereof - Google Patents
Lithium ion battery small-sized heat pump heat management system and application thereof Download PDFInfo
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- CN104332674B CN104332674B CN201410583760.XA CN201410583760A CN104332674B CN 104332674 B CN104332674 B CN 104332674B CN 201410583760 A CN201410583760 A CN 201410583760A CN 104332674 B CN104332674 B CN 104332674B
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- 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
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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
A kind of lithium ion battery small-sized heat pump heat management system and application thereof, including small-sized heat pump, lithium ion battery case, fan, lithium ion battery is placed in lithium ion battery case, according to the demand of cooling in summer, warming, the light duty compressor of small-sized heat pump is connected with condenser, vaporizer, condenser, vaporizer connect and compose complete refrigeration or the blood circulation of heating respectively with expansion valve, and blood circulation is connected with lithium ion battery case.Native system is applied to heat radiation in summer and the Winter protection system of lithium ion battery.Low profile thermal pumping system, only consumes a small amount of electric energy, and obtains heat and the cold of about 3 ~ 4 times of input powers, it is ensured that lithium battery reaches optimum state in operating temperature range.System is applied to wind energy, solar power system and electric automobile power battery system, can reach multiple action effects such as extending the service life of battery, minimizing environmental pollution, raising running efficiency of system, has the highest promotion and application and be worth.
Description
Technical field
The present invention relates to lithium ion battery and small-sized art of heat pumps.Specifically a kind of lithium ion battery small-sized heat pump heat management system and application thereof.
Background technology
At present, energy shortage, environmental pollution are the bottlenecks that restriction national economy is fast-developing.Develop the Important Action that new forms of energy are the problems such as reply energy shortage, environmental pollution, climate change, be simultaneously also beneficial to improve the energy resource structure of China, promote the international competitiveness of China's energy industry.Electrokinetic cell is one of core component of generation of electricity by new energy, and lithium ion battery is compared with other secondary cells, has more preferable combination property, selects lithium ion battery to have a extensive future as energy-storage battery.
At present, the operating temperature range of lithium battery typically at-20 ~ 60 DEG C, studies have shown that under cryogenic, the hydraulic performance decline of lithium battery, and especially in north cold area, winter, the use of battery can be subject to certain restrictions.Some areas, whole nation maximum temperature in summer can reach more than 40 DEG C the most in recent years, and the operation of lithium battery also can be affected, therefore to ensure normally working it is necessary to improve lithium battery at low temperature and the runnability of high temperature of lithium battery.
Heat pump is a kind of to utilize high potential to make heat flow to the device of high-order thermal source from low level heat energy, can produce the cold and hot amount being several times as much as high potential for utilization, in the place of cooling in summer heat supply in winter, especially seem economical.
Summary of the invention
The goal of the invention of the present invention is, the problem declined for the low temperature of lithium battery in background technology and high-temperature behavior, and the work stable in operating temperature range in order to ensure lithium battery,
One there is provided a kind of methodological science, and production cost is low, the small-sized heat pump heat management system of the free of contamination lithium ion battery utilizing small-sized heat pump that lithium battery carries out heat management, and two are to provide the application of the small-sized heat pump heat management system of lithium ion battery.
Realize foregoing invention purpose by the following technical solutions:
A kind of lithium ion battery small-sized heat pump heat management system, including small-sized heat pump, lithium ion battery case, fan, lithium ion battery is placed in lithium ion battery case, small-sized heat pump is mainly made up of condenser, vaporizer, light duty compressor, expansion valve, according to the demand of cooling in summer, warming, light duty compressor is connected with condenser, vaporizer, condenser, vaporizer connect and compose complete refrigeration or the blood circulation of heating respectively with expansion valve, and this blood circulation is connected with lithium ion battery case.
Preferably, the attachment structure of described cooling cycle system: condenser is connected with expansion valve, the other end of expansion valve is connected with vaporizer, vaporizer is connected with light duty compressor, light duty compressor is connected composition cooling in summer system with condenser, and cooling in summer system is connected with lithium ion battery case.
Preferably, the attachment structure of described heating blood circulation: vaporizer is connected with light duty compressor, light duty compressor is connected with condenser, condenser is connected with expansion valve, the other end of expansion valve is connected composition dynamic season heating system with vaporizer, and winter heating system is connected with lithium ion battery case.
Preferably, described light duty compressor uses inverter scroll compressor.
Preferably, the energy source of described light duty compressor selects environment friendly refrigerating fluid R134a in lithium battery itself, working media.
Preferably, it is provided with fan in described small-sized heat pump.
Preferably, the lithium battery group in lithium battery box is made up of some battery cells, and lithium battery group is closely coupled by connecting line, and upper and lower two groups of lithium batteries support by supporting clapboard is fixing.
The application of a kind of lithium ion battery small-sized heat pump heat management system, described small-sized heat pump is applied to heat radiation in summer and the Winter protection system of lithium ion battery.
Preferably, winter provides the heat of 3 ~ 4 times of electric energy with small-sized heat pump, is incubated lithium battery box, and summer provides the cold of 2 ~ 3 times of electric energy with small-sized heat pump, dispels the heat lithium battery box, it is ensured that lithium battery is operated in optimum working temperature 20 ~ 45 DEG C.
Use technique scheme, compared with prior art, the present invention is directed to the operating temperature range generally-20 DEG C ~ 60 DEG C of lithium battery, under low temperature and hot conditions, the problem that the properties of lithium battery all can decline, utilizes small-sized heat pump can consume a small amount of electric energy, and what substantial amounts of low temperature heat energy became high temperature heat heats feature, this feature of small-sized heat pump is applied in the insulation of lithium battery, solves lithium battery problem of hydraulic performance decline under low temperature and hot conditions.The low potential energy in environment can be made full use of due to heat pump, in actual application, heat pump is applied to lithium battery heat management system and reduces the factor causing set of cells to damage, thus be greatly prolonged the service life of lithium battery group, be effectively improved the efficiency of operation of equipment.Small-sized heat pump has volume advantage little, lightweight, applies tool to have great advantage in the energy-storage system of electric automobile, small-sized wind light mutual complementing power generation etc..
Accompanying drawing explanation
Fig. 1, Fig. 2 are the structural representations of the present invention, and wherein Fig. 1 is shown that summer condition figure, the winter condition figure that Fig. 2 shows.
Fig. 3 is lithium battery box cut-away view of the present invention.
Labelling in figure, condenser 1, light duty compressor 2, fan 3, vaporizer 4, expansion valve 5, lithium battery box 6, lithium battery box 7, lithium battery group 8, supporting clapboard 9.
Detailed description of the invention
Below in conjunction with the accompanying drawings and embodiment the present invention will be further described.
The invention discloses small-sized heat pump heat management system and the application thereof of a kind of lithium ion battery.The invention thought of the present invention is: for lithium battery under low temperature and hot conditions, the defect that the properties of battery declines, utilize low profile thermal pumping system, low profile thermal pumping system includes the blood circulation that the devices such as light duty compressor 2, condenser 1, expansion valve 5, vaporizer 4 are constituted, the blood circulation of small-sized heat pump is combined with lithium battery, forms cooling in summer, the heat management system of warming.A small amount of electric energy only need to be inputted during work, winter provides the heat of about 3 ~ 4 times of electric energy with small-sized heat pump, is incubated lithium battery box 7, provides the cold of about 2 ~ 3 times of electric energy in summer with small-sized heat pump, lithium battery box 7 is dispelled the heat, it is ensured that lithium battery is operated in optimum working temperature 20 ~ 45 DEG C.
Specific embodiment is as follows:
Accompanying drawing 1 is shown that the operating mode attachment structure schematic diagram of heat management system cooling in summer.
Lithium ion battery small-sized heat pump heat management system is by small-sized heat pump, lithium ion battery case 6, fan 3 forms, lithium ion battery 8 is placed in lithium ion battery case 7, small-sized heat pump is mainly by condenser 1, vaporizer 4, light duty compressor 2, expansion valve 5 forms, Fig. 1 is the cooling cycle system formed according to the demand of cooling in summer, the attachment structure of cooling cycle system is: condenser 1 is connected with expansion valve 5, the other end of expansion valve 5 is connected with vaporizer 4, vaporizer 4 is connected with light duty compressor 2, light duty compressor 2 is connected composition cooling in summer system with condenser 1, cooling in summer system is connected with lithium ion battery case 6.Fan 3 it is provided with in small-sized heat pump.
Seeing Fig. 1, when summer, low profile thermal pumping system is pressed cooling condition and is run, the high steam discharged by compressor 2, expanded valve 5 enters condenser 1, and refrigerant vapour is condensed into liquid, expanded valve 5 enters vaporizer 4, and absorb heat in vaporizer 4, absorb heat dissipation capacity Q2 of lithium battery group 8, the refrigerant vapour after evaporation, sucked by light duty compressor 2 after expanded valve 5, so going round and beginning again, it is achieved kind of refrigeration cycle, the heat Q1 wherein produced through condenser 1 distributes to surrounding air.
Fig. 2 is the warming blood circulation formed according to the demand of warming, the attachment structure of heating blood circulation is: vaporizer 4 is connected with light duty compressor 2, light duty compressor 2 is connected with condenser 1, condenser 1 is connected with expansion valve 5, the other end of expansion valve 5 is connected composition winter heating system with vaporizer 4, and winter heating system is connected with lithium ion battery case 6.
As shown in Figure 2, in the winter time under operating mode, first expansion valve 5 is turned to heat pump operating position in low profile thermal pumping system, the air energy Q3 that refrigerant suction is extraneous, at the internal carburation by evaporation of vaporizer 4, improves the temperature of cold-producing medium by the work of light duty compressor 2, cold-producing medium is made to be converted into liquefaction from vapor state by condenser 1 again, in conversion process, discharge substantial amounts of heat, utilize fan 3 that heat Q4 is transferred to lithium battery box 6 and be incubated.
The heat sum that the maximum cooling/heating amount of the light duty compressor 2 of the present embodiment exchanges with environment not less than maximum quantity of heat production and the lithium battery group 8 of lithium battery group 8 self, has DC frequency-changing function.The energy source of light duty compressor 2 selects environment friendly refrigerating fluid R134a in lithium battery itself, working media.
See that Fig. 3, lithium battery box 7 make with steel plate, internal placement Li-ion batteries piles 8 and supporting clapboard 9.Lithium battery group 8 is made up of some battery cells, and lithium battery group 8 is closely coupled by connecting line, and upper and lower two groups of lithium batteries support by supporting clapboard 9 is fixing.Totally 40 batteries in single Battery pack case, 8 joint lithium batteries are one group and are packaged into 5 groups altogether.
Lithium battery group charge and discharge process under low temperature and hot environment is completed according to the operation principle of Fig. 1, Fig. 2.Small-sized heat pump heat management system is applied to heat radiation in summer and the Winter protection system of lithium ion battery.
Winter provides the heat of 3 ~ 4 times of electric energy with small-sized heat pump, is incubated lithium battery box, and summer provides the cold of 2 ~ 3 times of electric energy with small-sized heat pump, dispels the heat lithium battery box, it is ensured that lithium battery is operated in optimum working temperature 20 ~ 45 DEG C.
Small-sized heat pump heat management system application specific embodiment is as follows:
Embodiment 1: small-sized solar and the heat management of wind generator system energy-storage battery:
Lithium battery is as small-sized solar and the energy storage device of wind-power electricity generation electricity generation system, in application process wherein, charging-discharging controller sends instruction according to the state of system, when generated energy is less than power consumption, electric energy is whole supply loads after being transformed to alternating current by inverter, not enough part is provided by accumulator battery electric discharge, electric energy in accumulator battery passes through charging-discharging controller and inverter supply load, when generated energy is more than power consumption, a part of electric energy is transformed to supply load after alternating current by inverter, dump energy is supplied to accumulator battery, when accumulator is full of, unnecessary electric energy is consumed by unloader.Electricity generation system uses the temperature of the battery that low profile thermal pumping system realizes charge and discharge process to control in running, and winter, employing heated circulation, used kind of refrigeration cycle summer, reached the best effort scope that the operating temperature of lithium battery is at 20 DEG C ~ 45 DEG C.
Embodiment 2: the heat management of electric automobile power battery charge-discharge system battery:
Utilize pure electric automobile and hybrid vehicle that lithium ion battery 8 drives, the charge and discharge process under low temperature and hot environment utilizes low profile thermal pumping system lithium battery group 8 is carried out heat management.Winter, employing heated circulation, used kind of refrigeration cycle summer, reached the best effort scope that the operating temperature of lithium battery is at 20 DEG C ~ 45 DEG C.
Device and the lithium battery group of the small-sized heat pump of the present invention are commercially available prod.
Although, the present invention is described in detail the most with a general description of the specific embodiments, but on the basis of the present invention, can make some modifications or improvements it, and this will be apparent to those skilled in the art.Therefore, these modifications or improvements without departing from theon the basis of the spirit of the present invention, belong to the scope of protection of present invention.
Claims (7)
1. a lithium ion battery small-sized heat pump heat management system, including small-sized heat pump, lithium ion battery case, fan, lithium ion battery is placed in lithium ion battery case, it is characterized in that, small-sized heat pump is mainly made up of condenser, vaporizer, light duty compressor, expansion valve, according to the demand of cooling in summer, warming, light duty compressor is connected with condenser, vaporizer, condenser, vaporizer connect and compose complete refrigeration or the blood circulation of heating respectively with expansion valve, and this blood circulation is connected with lithium ion battery case；The attachment structure of described cooling cycle system: condenser is connected with expansion valve, the other end of expansion valve is connected with vaporizer, vaporizer is connected with light duty compressor, and light duty compressor is connected composition cooling in summer system with condenser, and cooling in summer system is connected with lithium ion battery case；The high steam discharged by compressor, expanded valve enters condenser, refrigerant vapour is condensed into liquid, and expanded valve enters vaporizer, and absorbs heat in vaporizer, absorb heat dissipation capacity Q2 of lithium battery group, refrigerant vapour after evaporation, is sucked by light duty compressor after expanded valve, so goes round and begins again, realizing kind of refrigeration cycle, the heat Q1 wherein produced through condenser distributes to surrounding air；
The attachment structure of described heating blood circulation: vaporizer is connected with light duty compressor, light duty compressor is connected with condenser, condenser is connected with expansion valve, and the other end of expansion valve is connected composition winter heating system with vaporizer, and winter heating system is connected with lithium ion battery case；First expansion valve is turned in low profile thermal pumping system heat pump operating position, the air energy Q3 that refrigerant suction is extraneous, at the internal carburation by evaporation of vaporizer, work by light duty compressor improves the temperature of cold-producing medium, cold-producing medium is made to be converted into liquefaction from vapor state by condenser again, in conversion process, discharge substantial amounts of heat, utilize fan that heat Q4 is transferred to lithium battery box and be incubated.
Lithium ion battery the most according to claim 1 small-sized heat pump heat management system, it is characterised in that described light duty compressor uses inverter scroll compressor.
Lithium ion battery the most according to claim 2 small-sized heat pump heat management system, it is characterised in that the energy source of described light duty compressor selects environment friendly refrigerating fluid R134a in lithium battery itself, working media.
Lithium ion battery the most according to claim 1 small-sized heat pump heat management system, it is characterised in that be provided with fan in described small-sized heat pump.
Lithium ion battery the most according to claim 1 small-sized heat pump heat management system, it is characterized in that: the lithium battery group in lithium battery box is made up of some battery cells, lithium battery group is closely coupled by connecting line, and upper and lower two groups of lithium batteries support by supporting clapboard is fixing.
The application of a kind of lithium ion battery the most according to claim 1 small-sized heat pump heat management system, it is characterised in that: described small-sized heat pump is applied to heat radiation in summer and the Winter protection system of lithium ion battery.
The application of lithium ion battery the most according to claim 6 small-sized heat pump heat management system, it is characterized in that: winter provides the heat of 3 ~ 4 times of electric energy with small-sized heat pump, lithium battery box is incubated, summer provides the cold of 2 ~ 3 times of electric energy with small-sized heat pump, lithium battery box is dispelled the heat, it is ensured that lithium battery is operated in optimum working temperature 20 ~ 45 DEG C.
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| CN201410583760.XA CN104332674B (en) | 2014-10-28 | 2014-10-28 | Lithium ion battery small-sized heat pump heat management system and application thereof |
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| CN201410583760.XA CN104332674B (en) | 2014-10-28 | 2014-10-28 | Lithium ion battery small-sized heat pump heat management system and application thereof |
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| CN104332674B true CN104332674B (en) | 2016-10-05 |
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| CN103496319A (en) * | 2013-10-14 | 2014-01-08 | 上海交通大学 | Temperature regulating device of new energy automobile power storage battery |
| CN203721847U (en) * | 2014-02-28 | 2014-07-16 | 华南理工大学 | Battery group heat management system based on electromobile heat pump air conditioning system |
| CN203727131U (en) * | 2014-03-11 | 2014-07-23 | 广州汽车集团股份有限公司 | New-energy vehicle thermal management system |
| CN204179179U (en) * | 2014-10-28 | 2015-02-25 | 河北联合大学 | The small-sized heat pump heat management system of lithium ion battery |
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- 2014-10-28 CN CN201410583760.XA patent/CN104332674B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103496319A (en) * | 2013-10-14 | 2014-01-08 | 上海交通大学 | Temperature regulating device of new energy automobile power storage battery |
| CN203721847U (en) * | 2014-02-28 | 2014-07-16 | 华南理工大学 | Battery group heat management system based on electromobile heat pump air conditioning system |
| CN203727131U (en) * | 2014-03-11 | 2014-07-23 | 广州汽车集团股份有限公司 | New-energy vehicle thermal management system |
| CN204179179U (en) * | 2014-10-28 | 2015-02-25 | 河北联合大学 | The small-sized heat pump heat management system of lithium ion battery |
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Inventor after: Zhang Yuqing Inventor after: Li Haiying Inventor after: Jia Yongli Inventor after: Zhao Dongmei Inventor after: Zhang Dan Inventor after: Wang Hongli Inventor after: Zhang Guijie Inventor after: Ji Aimin Inventor after: Shi Jianhui Inventor before: Li Haiying Inventor before: Jia Yongli Inventor before: Zhang Dan Inventor before: Wang Hongli Inventor before: Zhang Guijie Inventor before: Ji Aimin Inventor before: Zhao Dongjie |
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Effective date of registration: 20160708 Address after: 063000 Hebei province Tangshan City Xinhua West Road No. 46 Applicant after: Zhang Yuqing Address before: 063000 Hebei province Tangshan City Xinhua West Road No. 46 Applicant before: Hebei United University |
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