CN101894987B - Power lithium battery temperature control device - Google Patents
Power lithium battery temperature control device Download PDFInfo
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- CN101894987B CN101894987B CN2010102261544A CN201010226154A CN101894987B CN 101894987 B CN101894987 B CN 101894987B CN 2010102261544 A CN2010102261544 A CN 2010102261544A CN 201010226154 A CN201010226154 A CN 201010226154A CN 101894987 B CN101894987 B CN 101894987B
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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
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- Y02E60/10—Energy storage using batteries
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Abstract
The invention discloses a power lithium battery temperature control device, which comprises a temperature control battery holder, wherein the temperature control battery holder forms a circulation loop with a high and low temperature liquid source through a pipe; the circulation loop is provided with a circulating pump; and a temperature sensor and a control unit are connected between the circulating pump and the temperature control battery holder. In the invention, the temperature sensor detects in real time and the control unit regulates in time, thereby providing a suitable work environment temperature for a lithium battery, improving the electrochemical reaction speed, and ensuring the output current and voltage and discharge capacity of the lithium battery so as to enable the lithium battery to achieve the optimal property and meet the utilization requirement of a power source.
Description
Technical field
The invention belongs to technical field of lithium batteries, particularly a kind of power lithium battery temperature control device.
Background technology
Lithium battery is meant respectively with two abilities and embeds the secondary cell that the compound with the removal lithium embedded ion constitutes as positive and negative electrode reversiblely.The positive electrode of lithium battery is made up of the reactive compound of lithium usually, and common positive electrode main component is cobalt acid lithium, LiMn2O4, nickel ternary cobalt material and LiFePO4, and negative pole then is the carbon of special molecular structure.Lithium battery generally comprises parts such as positive pole, negative pole, electrolyte, barrier film, positive wire, negative wire and battery case.Because lithium battery used colloidal electrolyte, electric liquid can not take place to be revealed, assembling easily, make integral battery door very gently, very thin.Therefore in addition, security incidents such as leakage and combustion explosion can not take place in above-mentioned lithium battery, can use plastic-aluminum combined thin film fabrication battery case, thereby improve the specific capacity of entire cell, Here it is general described flexible package lithium cell.
At present, the monomer operating voltage of lithium battery is 2.0～4.25V, and the capacity of power lithium battery is 10～100Ah.In the use, satisfy the load electricity consumption requirement of electric motor car high voltage, big electric current, must use by a plurality of cell connection in series-parallel.So not only make internal resistance, capacity and the terminal voltage of battery be difficult to equilibrium, and the technical difficulty of charge and discharge protecting circuit increase the cost raising.For example: the pure electric sedan of the 160～260km that goes, DC input voitage are 310V, if the use ferric phosphate lithium cell (3.2V, 90Ah) just 96 of needs are monomer series-connected, could satisfy power reguirements; Vehicle body is 12 meters a electric motor coach, just needs 108 monomers (LiMn2O4 of 3.6V or ternary lithium battery) power supply is together in series if operating voltage is 388V.The battery capacity that is together in series is big more, and the manufacture difficulty of its charge and discharge protecting circuit is high more, and fail safe also is difficult to thoroughly solve.In addition, the environment for use temperature of electrocar lithium battery is at-20～+ 55 ℃.With regard to single only electric core, the capability retention in the time of its 0 ℃ is about 60～70%, and the capability retention in the time of-10 ℃ is about 40～55%, and the capability retention in the time of-20 ℃ is about 20～40%.Limit low temperature under the low temperature environment for use of lithium battery possibly be low to moderate below-40 ℃; Under such cryogenic conditions; Electrochemical reaction rates descends; The electric current and the voltage of battery output all can descend, and discharge capacity also can decline to a great extent, and such cryogenic property obviously can not satisfy the instructions for use of electrical source of power.On the contrary, the limiting temperature under the high temperature environment for use can reach 50 ℃, even about up to 60 ℃, even the high-temperature behavior of ferric phosphate lithium cell is better, its discharge capacity also can decline to a great extent.Therefore, the operating ambient temperature of control lithium battery is most important, becomes the direction of mainly assaulting fortified position of lithium battery.
Summary of the invention
The purpose of this invention is to provide a kind of lithium battery that can effectively guarantee and have the power lithium battery temperature control device of suitable environment for use temperature.
For realizing above-mentioned purpose; Technical scheme of the present invention is: a kind of power lithium battery temperature control device; Comprise the temperature control battery case; Said temperature control battery case is communicated with by pipeline with the high and low temperature fluid supply and forms circulation circuit, on circulation circuit, is provided with circulating pump, is connected with temperature sensor and control unit between circulating pump and the temperature control battery case; Said temperature control battery case comprises the shell of open upper end, and the opening part of shell is provided with cover plate, and cover plate top is provided with positive terminal and negative terminal and detection line terminal, and the detection line terminal links to each other with the temperature sensor of cover plate downside; The cover plate bottom is provided with the lug connector that links to each other with negative terminal with positive terminal; Shell is provided with a plurality of flow of liquid through holes, and the two ends of flow of liquid through hole communicate with liquid input tube road and liquid output pipe road respectively.
Said flow of liquid through hole is located on the both sides end face of shell and perpendicular to plane, cover plate place, liquid input tube road and liquid output pipe road are provided with the connector that is connected, and the connector shutoff is in the top and bottom of flow of liquid through hole; Be provided with circular-arc convexity along its length on the inwall in said flow of liquid through hole, liquid input tube road and liquid output pipe road.
Said outer casing bottom detachably is provided with base, and the base both sides are provided with arc-shaped groove, and the liquid input tube road of groove and both sides is or/and the clamping of liquid output pipe road.
In addition; The high and low temperature fluid supply comprises the temperature control liquid box that has inlet and liquid outlet; Temperature control liquid box top is provided with radiator; Be provided with metallic plate between temperature control liquid box and the radiator, be respectively equipped with the semiconductor temperature difference module between metallic plate and temperature control liquid box and the radiator, the semiconductor temperature difference module connects the back and is electrically connected with DC power supply.
Temperature control liquid box and radiator inside are provided with radiating ribs, and radiator one end is provided with radiator fan.
Be electrically connected between semiconductor temperature difference module and the DC power supply and be provided with double-point double-throw switch.
The semiconductor temperature difference module between metallic plate and the temperature control liquid box and the hot side of the semiconductor temperature difference module between metallic plate and the radiator or huyashi-chuuka (cold chinese-style noodles) are towards consistent.
The temperature control liquid box outer surfac is provided with adiabatic membrane.
Control unit is the PLC programmable logic controller (PLC), itself and double-point double-throw switch control connection.
Compared with prior art, advantage of the present invention is:
1, the temperature control battery case is communicated with by pipeline with the high and low temperature fluid supply and forms circulation circuit; On circulation circuit, be provided with circulating pump; Being connected with temperature sensor and control unit between circulating pump and the temperature control battery case, in time regulating and control through temperature sensor detection in real time and control unit, is that lithium battery is created suitable operating ambient temperature; Improve electrochemical reaction rates; Guarantee output current, output voltage and the discharge capacity of lithium battery, so that the optimum performance of lithium battery performance satisfies the instructions for use of electrical source of power.
2, on shell, be provided with a plurality of flow of liquid through holes; In the flow of liquid through hole, feed hot water or cold water,, can the temperature of lithium battery be controlled at 20～45 ℃ to improve the temperature or the heat dispersion of battery case; Help normally carrying out of electrochemical reaction, improve the stability that lithium battery uses; This battery case design science; Simple and reasonable for structure, be applicable to the packing of various flexible package lithium cells, flexible package lithium cell monomer capacity is freely assembled from several ampere-hours to hundreds of ampere-hours; Help improving the specific energy of single lithium battery; Assembling, loading and unloading and convenient transportation are eliminated various potential safety hazards, and be safe and reliable.
3, on the cover board be provided with the detection line terminal, be convenient to monitor in real time the working temperature of lithium battery, so that in time regulate and control the working temperature of lithium battery.
5, on the inwall in flow of liquid through hole, liquid input tube road and liquid output pipe road, be provided with circular-arc convexity, promptly increase the processing of heat exchange area, improve heat absorption or heat dispersion, guarantee the battery serviceability.
6, be respectively equipped with the semiconductor temperature difference module between metallic plate and temperature control liquid box and the radiator; Be electrically connected between semiconductor temperature difference module and the DC power supply and be provided with double-point double-throw switch; Through change double-point double-throw switch throw to; Change the polarity that is connected of semiconductor temperature difference module and DC power supply, thereby make the liquid in the temperature control liquid box be transformed into high-temp liquid or cryogenic liquid, guarantee that effectively lithium battery has suitable environment for use temperature.
7, be provided with radiating ribs at temperature control liquid box and radiator inside, increase heat exchange area, improved heat absorption or heat dispersion greatly; Outer surface at the temperature control liquid box is provided with adiabatic membrane, effectively reduces temperature control liquid box internal heat and scatters and disappears saves energy.
8, the end at radiator is provided with radiator fan, improves the cooling rate of radiator.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the structural representation of temperature control battery case among Fig. 1;
Fig. 3 is the structural representation of shell among Fig. 2;
Fig. 4 is the structural representation in liquid input tube road or liquid output pipe road among Fig. 2;
Fig. 5 is the structural representation of flow of liquid through hole or liquid input tube road or liquid output pipe road inwall among Fig. 2.
Fig. 6 is the main TV structure sketch map of high and low temperature fluid supply among Fig. 1;
Fig. 7 is the plan structure sketch map of Fig. 6;
Fig. 8 is the left TV structure sketch map of Fig. 6;
Fig. 9 is the perspective view of high and low temperature fluid supply;
Figure 10 is the circuit diagram of high and low temperature fluid supply.
Embodiment
Power lithium battery temperature control device as shown in Figure 1; It comprises temperature control battery case and high and low temperature fluid supply; The temperature control battery case is communicated with by pipeline with the high and low temperature fluid supply and forms circulation circuit; On circulation circuit, be provided with circulating pump, between circulating pump and temperature control battery case, be connected with temperature sensor, between high and low temperature fluid supply and temperature control battery case, be connected with control unit.Above-mentioned control unit is the PLC programmable logic controller (PLC).
Lithium battery temperature control battery case as shown in Figure 2, it comprises the shell 1 of open upper end, is provided with dismountable base 16 at outer casing bottom, shell 1 upper opening place is provided with cover plate 2, on cover plate 2, is provided with positive terminal 3 and negative terminal 4.Vertically be provided with polylith dividing plate 14 in shell 1 inside, dividing plate 14 evenly is divided into a plurality of isolated areas with the inside of shell 1, in each isolated area, is provided with polylith electricity core 5, and polylith electricity core 5 is arranged side by side.The anode ear 12 on electricity core 5 tops is connected with the lug connector 6 of negative electrode lug 13 by " worker " font, and in order to being connected with negative terminal 4 with positive terminal 3, positive terminal 3 links to each other through the lug connector 6 of the counterbore on the cover plate 2 with cover plate 2 bottoms respectively with negative terminal 4; Connector 7, connector 8 and connector 9 are cascaded adjacent battery pack.For the ease of the Performance Detection of lithium battery, on cover plate 2, be provided with detection line terminal 17, the lower end of detection line terminal 17 links to each other with lug connector 6, connector 7, connector 8 and connector 9 respectively through lead.Wherein, the material of detection line terminal 17 is brass chromium plating, and its cross-sectional area is the 0.5-1.0 square millimeter.
Like Fig. 3, Fig. 4 and shown in Figure 5; On shell 1, be provided with a plurality of flow of liquid through holes 15; Flow of liquid through hole 15 is located on the both sides end face of shell 1, and perpendicular to plane, cover plate 2 place, is respectively equipped with the liquid input tube road 10 and liquid output pipe road 11 that communicates with it at the two ends of flow of liquid through hole 15.Liquid input tube road 10 is provided with and flow of liquid through hole 15 the same number of connectors 18 with liquid output pipe road 11, and connector 18 is connected with liquid input tube road 10 and liquid output pipe road 11, and said connector 18 shutoff are in flow of liquid through hole 15.Be provided with arc-shaped groove in base 16 both sides, the liquid input tube road 10 of groove and both sides is or/and 11 clampings of liquid output pipe road, and base 16 can be along the liquid input tube road 10 slides with the length direction push-and-pull in liquid output pipe road 11.On the inwall in flow of liquid through hole 15, liquid input tube road 10 and liquid output pipe road 11, be provided with circular-arc protrudingly 19, the processing that promptly increases heat exchange area improves heat absorption or heat dispersion, guarantees the battery serviceability.
The height of shell 1, wide ratio are (190 ± 5): (135 ± 1.5), suitable kerb weight is the passenger car of 860kg ∽ 1400kg, under the seat, need not promote seat height before and after being placed in, the minimum ground clearance of car load still can reach >=150mm.Shell 1 is high pack alloy spare or cold-drawn Al-alloy parts.The material of cover plate 2 is V00 nylon 66 plastic rubber materials, fire-retardant V00 level, and meet the BOHS command request.The material of positive terminal 3 and negative terminal 4 is brass chromium plating.Liquid input tube road 10 can be metal material with liquid output pipe road 11, perhaps is V00 nylon 66 plastic rubber materials, fire-retardant V00 level, and meet the BOHS command request.
Like Fig. 6, Fig. 7, Fig. 8 and high and low temperature fluid supply shown in Figure 9, it comprises temperature control liquid box 21, on temperature control liquid box 21 two ends removable end cap, is respectively equipped with inlet 22 and liquid outlet 23.Above temperature control liquid box 21, be provided with radiator 24; Be provided with metallic plate 25 between temperature control liquid box 21 and the radiator 24; Between metallic plate 25 and temperature control liquid box 21 and radiator 24, be respectively equipped with semiconductor temperature difference module 26, be respectively two and four with following semiconductor temperature difference number of modules above the metallic plate 25.Semiconductor temperature difference module 26 evenly sticks on above the metallic plate 25 with above the temperature control liquid box 21 through heat-conducting silicone grease, and between metallic plate 25 and the temperature control liquid box 21 and the hot side of the semiconductor temperature difference module 26 between metallic plate 25 and the radiator 24 or huyashi-chuuka (cold chinese-style noodles) towards consistent.Shown in figure 10, semiconductor temperature difference module 26 series connection back is electrically connected with DC power supply 27, between semiconductor temperature difference module 26 and DC power supply 27, is electrically connected and is provided with double-point double-throw switch 28.For improving heat absorption or heat dispersion; Be provided with radiating ribs 29 in temperature control liquid box 21 and radiator 24 inside; In order further to improve heat absorption or heat dispersion; Can also on the inwall of radiating ribs 29, temperature control liquid box 21 and radiator 24, be provided with circular-arc convexity along its length, increase heat exchange area, improve heat absorption or heat dispersion.End at radiator 24 is provided with radiator fan 30, is used for cooling of radiator 24.Outer surface at temperature control liquid box 21 is provided with adiabatic membrane 31, reduces temperature control liquid box 21 internal heat and scatters and disappears.Radiator 24 is the boxlike radiator.
The operation principle of high and low temperature fluid supply is: heat release or heat absorption phenomenon take place when 26 energisings of semiconductor temperature difference module; Through change double-point double-throw switch 28 throw to; Change the two poles of the earth polarity that semiconductor temperature difference module 26 connects DC power supply 27, the liquid in the temperature control liquid box 21 will be transformed into high-temp liquid or cryogenic liquid.
Temperature control liquid box 21 is high pack alloy spare or cold-drawn Al-alloy parts with radiator 24.The model of semiconductor temperature difference module 26 is TEC1-12708, and the voltage of DC power supply 27 is 72V.If be connected on the DC power supply after 26 parallel connections of semiconductor temperature difference module, then the voltage of DC power supply is 12V.
On the metallic plate 25 of high and low temperature fluid supply with below the semiconductor temperature difference number of modules also can be respectively four with ten perhaps eight and 20.
Circulating pump links to each other with detection line terminal 17 with temperature sensor between the temperature control battery case, detects the working temperature of temperature control battery case in real time, and is PLC programmable logic controller (PLC) transmission signals to control unit.
Control unit is double-point double-throw switch 28 control connections of PLC programmable logic controller (PLC) and high and low temperature fluid supply.When temperature sensor is transferred to the PLC programmable logic controller (PLC) with it from detection line terminal 17 detected temperature control battery case working temperature signals; If temperature control battery case working temperature is too high; PLC PLC controls double-point double-throw switch 28 change throw to; Thereby change the two poles of the earth polarity that semiconductor temperature difference module 26 connects DC power supply 27, make to produce cryogenic liquid in the temperature control liquid box 21, cryogenic liquid gets into the temperature control battery case through circulating pump; Promptly between liquid input tube road 10, flow of liquid through hole 15 and liquid output pipe road 11, form the chilled(cooling) water return (CWR); To reduce the working temperature of temperature control battery case, for the temperature control battery case is created suitable operational environment, with the optimal performance of performance lithium battery.On the contrary; The temperature signal that is transferred to the PLC programmable logic controller (PLC) when temperature sensor shows that temperature control battery case working temperature is low excessively, then explain ambient temperature cross the cryogenic liquids that continue in low or the temperature control liquid box 21 to produce too much, overlong time, at this moment; PLC PLC controls double-point double-throw switch 28 change throw to; Make temperature control liquid box 21 produce high-temp liquid, high-temp liquid gets into the temperature control battery case through circulating pump, promptly between liquid input tube road 10, flow of liquid through hole 15 and liquid output pipe road 11, forms the high-temperature water loop; To promote the working temperature of temperature control battery case, for the performance that the lithium battery performance is optimum is created suitable operational environment.
Claims (1)
1. power lithium battery temperature control device; It is characterized in that: comprise the temperature control battery case; Said temperature control battery case is communicated with by pipeline with the high and low temperature fluid supply and forms circulation circuit; On circulation circuit, be provided with circulating pump, be connected with temperature sensor and control unit between circulating pump and the temperature control battery case; Said temperature control battery case comprises the shell of open upper end, and the opening part of shell is provided with cover plate, and cover plate top is provided with positive terminal and negative terminal and detection line terminal, and the detection line terminal links to each other with the temperature sensor of cover plate downside; The cover plate bottom is provided with the lug connector that links to each other with negative terminal with positive terminal; Shell is provided with a plurality of flow of liquid through holes, and the two ends of flow of liquid through hole communicate with liquid input tube road and liquid output pipe road respectively; Said flow of liquid through hole is located on the both sides end face of shell and perpendicular to plane, cover plate place, liquid input tube road and liquid output pipe road are provided with the connector that is connected, and the connector shutoff is in the top and bottom of flow of liquid through hole; Be provided with circular-arc convexity along its length on the inwall in said flow of liquid through hole, liquid input tube road and liquid output pipe road; Said outer casing bottom detachably is provided with base, and the base both sides are provided with arc-shaped groove, and the liquid input tube road of groove and both sides is or/and the clamping of liquid output pipe road.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102261544A CN101894987B (en) | 2010-07-14 | 2010-07-14 | Power lithium battery temperature control device |
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| CN2010102261544A CN101894987B (en) | 2010-07-14 | 2010-07-14 | Power lithium battery temperature control device |
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| CN2011104617929A Division CN102544623A (en) | 2010-07-14 | 2010-07-14 | Temperature control device for power lithium battery |
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| CN101894987A CN101894987A (en) | 2010-11-24 |
| CN101894987B true CN101894987B (en) | 2012-12-05 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102544625B (en) * | 2012-03-05 | 2014-04-02 | 苏州奥杰汽车工业有限公司 | Cooling device of semiconductor water-cooling battery |
| CN102709616B (en) * | 2012-05-31 | 2014-09-17 | 杭州万好万家新能源科技有限公司 | Distributed thermal management system for battery modules |
| CN102881959B (en) * | 2012-09-29 | 2014-06-25 | 湖北绿驰科技有限公司 | Water-cooled heat management system of electric automobile battery pack |
| CN104767005A (en) * | 2015-04-25 | 2015-07-08 | 惠州市亿鹏能源科技有限公司 | Battery pack with liquid-cooling cooling device |
| CN114335744A (en) * | 2021-12-31 | 2022-04-12 | 湖北钛时代新能源有限公司 | Manufacturing method of self-cooling lithium iron phosphate battery |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201408825Y (en) * | 2009-05-07 | 2010-02-17 | 联合汽车电子有限公司 | Automotive battery heat managing system |
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| CN201717346U (en) * | 2010-07-14 | 2011-01-19 | 李辉 | Apparatus for controlling temperature of lithium battery |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201408825Y (en) * | 2009-05-07 | 2010-02-17 | 联合汽车电子有限公司 | Automotive battery heat managing system |
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