CN101728595B - Battery pack - Google Patents
Battery pack Download PDFInfo
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- CN101728595B CN101728595B CN200810167815A CN200810167815A CN101728595B CN 101728595 B CN101728595 B CN 101728595B CN 200810167815 A CN200810167815 A CN 200810167815A CN 200810167815 A CN200810167815 A CN 200810167815A CN 101728595 B CN101728595 B CN 101728595B
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- circulation passage
- battery module
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- heat
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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 relates to a battery pack module comprising a temperature regulating system and a plurality of monomer batteries or a plurality of battery packs, wherein the temperature regulating system comprises a pump, a temperature regulator, a circulating passage and fluid media, wherein the fluid media are filled in the circulating passage; the circulating passage is connected with the inflow entrance of the pump and is connected with the inflow entrance of the pump, thereby forming a circulation loop of the fluid media; and the temperature regulator is used for enabling the fluid media in the circulating passage to be heated or cooled so as to heat or radiate the monomer batteries or the battery packs arranged around the circulation loop. The temperature regulating system of the battery pack can provide constant high-efficiency temperature regulating for the battery packs.
Description
Technical field
The present invention relates to battery pack, relate in particular to the humidity control system of battery pack.
Background technology
Battery can produce great amount of heat in charge and discharge process, this heat not only can influence the performance of battery, more seriously, when heat accumulation after to a certain degree, cause thermal runaway possibly and explode.For the lithium ion battery group that automobile is used, heat radiation is very important.In the prior art, adopt external circulation mode that battery pack is dispelled the heat usually, for example through blowing to battery pack from the outside cold air of battery module, and the air after the battery pack of will flowing through is discharged into the battery module outside, just forms systemic circulation with the outside.This radiating mode can be brought the moisture in the extraneous air into battery module usually, is unfavorable for the steady operation of battery pack.
In addition, some batteries, especially electrokinetic cell may be worked under low temperature environment as required.When under low temperature environment, working, the service behaviour of battery in low temperature environment is relatively poor, and for example, the optimum working temperature of lithium battery is at 15-35 ℃.When battery pack is lower than 0 ℃ of work; Because increasing, the viscosity of electrolyte make ion motion receive big resistance; Diffusivity also reduces; Therefore the charge-discharge performance of battery and the charging performance that cycle life can receive very big influence, particularly battery can only fill the 50-60% capacity like battery-20 ℃ the time.Therefore, when low temperature is worked down, need carry out low-temperature heat to battery pack.
Summary of the invention
For addressing the above problem, need a kind ofly when considering the battery pack heat radiation, also need consider humidity control system to the battery pack low-temperature heat.
The present invention provides a kind of battery module; This module comprises humidity control system and a plurality of cell or a plurality of battery pack; Said humidity control system comprises pump, thermoregulator, circulation passage and fluid media (medium), and said fluid media (medium) is filled in the said circulation passage, and said circulation passage is connected with the inflow entrance of said pump; And be connected with the flow export of said pump; Thereby form the circulation circuit of said fluid media (medium), said thermoregulator is used for making the said fluid media (medium) heating or the cooling of said circulation passage, to heat perhaps heat radiation to being arranged on said circulation circuit said cell or battery pack on every side.
Said thermoregulator can be as required and optionally to said fluid media (medium) heating or cooling, with the temperature of regulating cell group.Said fluid media (medium) can adopt liquid or gas, because the present invention is an inner circulation structure, can not bring the moisture of outside into battery, and the assurance battery is worked under constant environment.In addition, the inlet that said pump of the present invention is circulation also is the outlet of circulation, can effectively improve the utilance of heat.
Description of drawings
Fig. 1 is the sketch map of a kind of execution mode of battery module of the present invention;
Fig. 2 is the sketch map of the another kind of execution mode of battery module of the present invention.
Embodiment
Shown in Figure 1 is the execution mode of a kind of battery module of the present invention, and wherein, battery module of the present invention comprises a plurality of cells 6 and humidity control system, and this humidity control system comprises pump 1, thermoregulator 2, circulation passage 3 and fluid media (medium).Fluid media (medium) is filled in the circulation passage 3; One end and the pump 1 of circulation passage 3 are connected in inflow entrance 4, and extend through thermoregulator 2, and the other end of circulation passage 3 and pump 1 are connected in flow export 5; Fluid media (medium) flows along direction shown in the arrow in circulation passage 3; Thereby form the inner circulation structure of fluid media (medium), fluid media (medium) is extruded by pump 1 pressurization, after thermoregulator 2 carries out adjustment, passes through circulation passage 3; Thermoregulator 2 is used for making the fluid media (medium) heating or the cooling of circulation passage 3, to heat or heat radiation being arranged on said circulation circuit cell 6 on every side.
As shown in Figure 1, cell 6 is arranged on around the circulation passage 3, preferably is arranged in the circulation circuit institute area surrounded of circulation passage 3 formations, and makes the space between each cell 6 keep electric insulation, to obtain the best temperature regulating effect.The inventor discovers that in large-sized battery such as electrokinetic cell, when charging and discharge, the charging and discharging currents of battery is very big, causes the variations in temperature of entire cell easily.And flowing to the battery two ends in the electric routing battery middle part is the process of a current concentration, and promptly the closer to the direction at battery two ends, current density is high more, and temperature is also just high more.Especially on electrode terminal, because the area of electrode terminal is less relatively, and be the metal material that generates heat easily, so temperature being the highest on the electrode terminal, is the key position of battery heat radiation, also is the important step of battery security.The lug junction of electrode, electrode terminal junction all are physical connections in addition, and the impedance of its impedance ratio electrochemical reaction is bigger, and this also is a very high main cause of electrode terminal temperature.Therefore; Near heat-conduction component (the electrode fin of heat or electrode terminal itself like conducting electrode) can be set at the electrode tip of cell 6; And this heat-conduction component drawn and make the sealing of its at least a portion (like injection moulding) is set in circulation passage 3 inside, make fluid media (medium) to directly cooling or the heating of these parts.
In addition; Circulation passage 3 can form a plurality of circulation circuits; In the execution mode as shown in Figure 1; Pump 1 comprises an inflow entrance 4 and a plurality of flow exports 5, and circulation passage 3 comprises a fluid media (medium) inflow direction and a plurality of flow of fluid medium outgoing direction (direction of arrow among Fig. 1), thereby constitutes a plurality of circulation circuits; In the execution mode as shown in Figure 2, pump 1 comprises a plurality of inflow entrances 4 and a plurality of flow exports 5, and circulation passage 3 comprises a plurality of fluid media (medium) inflow directions and a plurality of flow of fluid medium outgoing direction, thereby constitutes a plurality of circulation circuits.
In addition, fluid media (medium) can be selected liquid or gas, requires fluid insulation, non-corrosiveness when using the liquid fluid medium, preferably uses fluid liquid media such as silicone oil.Gas can be selected the higher gas of hot memory space or be doped with the air of heat absorption foam beads.
According to different working environments, make thermoregulator 2 can be used for the heat radiation or the low-temperature heat of battery pack.Thermoregulator 2 can be arranged in the circulation circuit of circulation passage 3 formations, and comprises cooling package and heating component.Preferably, said cooling package and heating component are controllable constant-temperature cooling package and heating component, battery pack is provided constant working temperature.In addition; Cooling package and heating component can be arranged in the circulation passage 3; Can also be separately positioned on the inside and the outer wall of the pipeline of circulation passage 3, perhaps be separately positioned on the outer wall of pipeline of circulation passage 3, with fluid media (medium) cooling or heating flowing through in the circulation passage 3.In this execution mode, thermoregulator 2 is arranged near the inflow entrance of pump 1, and cooling package can be condenser 8 (like the condenser of air-conditioning), and heating component can be coil heats part or ceramic heat part 9.
Can be through manually selecting heating component or cooling package work.In addition; Said battery module can also comprise temperature sensor and control starter (not shown); Temperature sensor (can be arranged on the electrode terminal of cell) records the temperature of battery module and transmits signal to the control starter; The control starter is selected cooling package or heating component work according to the running of the said humidity control system of signal controlling that receives, thereby automatically to battery pack heat radiation or heating.Preferably, temperature sensor can be a thermistor type sensors, and the control starter can be microprocessor or PLC, can the control starter be arranged on the thermoregulator 2.
To introduce the course of work of the humidity control system of battery pack of the present invention below in detail.
Discharging and recharging or working temperature when being higher than predetermined temperature as 55 ℃ of the battery module that records when temperature sensor, the control starter makes said humidity control system starting, and makes condenser 8 work in the thermoregulator 2.Said humidity control system is used for the heat radiation of battery pack.Fluid media (medium) gets into inflow entrance 4 through the pressurization of pump 1, and longshore current circulation passage 3 flows in the thermoregulators 2, and the running of condenser 8 reduces the temperature of fluid media (medium).After the cryogen medium flows out from thermoregulator 2; Longshore current circulation passage 3 flows; And carry out heat exchange (when the electrode fin of cell 6 is arranged in the circulation passage 3 with the cell 6 that is arranged on around the circulation passage 3; Fluid media (medium) can also be directly and the electrode fin carry out heat exchange), take away the heat that battery distributes.The process heat exchange has also absorbed after the unnecessary heat, the circulation in flow export 5 flows back to pump 1 formation of fluid media (medium) longshore current circulation passage 3.Subsequently, fluid media (medium) is pressurizeed once more by pump 1 and flows into thermoregulator 2, and through condenser 8 coolings, longshore current circulation passage 3 flows and continues the heat radiation circulation.
Likewise; When the working temperature of the battery module that records when temperature sensor is lower than predetermined temperature as-10 ℃; The control starter makes said humidity control system starting, and makes ceramic heat part 9 work in the thermoregulator 2, and said humidity control system is used for the low-temperature heat of battery pack.Fluid media (medium) gets into inflow entrance 4 through the pressurization of pump 1 and longshore current circulation passage 3 flows in the thermoregulators 2, the running heating fluid medium of ceramic heat part 9.After the fluid media (medium) of heating flowed out from thermoregulator 2, longshore current circulation passage 3 flowed, and carried out heat exchange with the cell 6 that is arranged on around the circulation passage 3, to low temperature down the battery pack of work carry out low-temperature heat.Fluid media (medium) longshore current circulation passage 3 circulation in flow export 5 flows back to pump 1 formation through heat exchange.Subsequently, fluid media (medium) is pressurizeed once more by pump 1 and flows into thermoregulator 2, and through 9 heating of ceramic heat part, longshore current circulation passage 3 flows and continues Heating Cyclic.
Because said humidity control system has formed interior circulation, all parts all are encapsulated in the battery module, when fluid media (medium) is gas, can avoid bringing the moisture of outside into battery module, therefore, can keep battery pack under constant environment, to work.In addition, the fluid media (medium) of a circulation directly is used for next circulation, can reduces the heating or the cooling of next circulation time fluid medium, make that the interior circulation pattern efficiency of said humidity control system is higher.
In order further to improve the recycle of energy, can be through the uniform distribution of temperature field of parameters optimization with circulation in guaranteeing as much as possible.Preferably, can be through increasing the flow velocity of fluid media (medium), the heat exchange amount of fluid media (medium) and battery pack during with the minimizing single cycle.During the using gases fluid media (medium), can also preferably improve the hot memory space of gas, thereby guarantee the uniform distribution of temperature field of circulation through the mode of using big gas of hot memory space or doping foam beads.More preferably, can the temperature difference at inflow entrance 4 and flow export 5 places be controlled at 2～3 ℃, so that the heat exchange amount basically identical between fluid media (medium) and each cell 6, thereby reach best temperature adjustment to battery pack.
In addition, circulation passage 3 can also that kind as shown in Figure 2 be arranged on the circulation passage that forms entire cell bag 10 between a plurality of battery pack.In this execution mode, the connected mode of the humidity control system of the connection of each parts and single battery group likeness in form, difference only is, a plurality of battery pack are arranged on around the circulation passage 3.That is to say that this humidity control system comprises a plurality of battery pack 7.Fluid media (medium) flows out through the pressurization of pump 1 (not shown), carries out adjustment and through circulation passage 3, is arranged on the temperature of circulation passage 3 battery pack 7 on every side with adjusting through thermoregulator 2 (not shown).As shown in Figure 2, circulation passage 3 comprises a plurality of circulation circuits, and the two ends of each circulation circuit are connected with pump 1 respectively, thereby forms the loop structure of fluid media (medium).Each battery pack 7 is arranged in the circulation circuit institute area surrounded of circulation passage 3 formation, and keeps the space electric insulation between each battery pack 7.
Can be through the humidity control system of battery module of the present invention; According to different needs battery module is dispelled the heat or low-temperature heat; And effectively utilize energy, saved the space,, satisfied the requirement of high energy efficiency and space availability ratio simultaneously for electrokinetic cell.
Claims (10)
1. battery module; This module comprises humidity control system and a plurality of cell or a plurality of battery pack; Said humidity control system comprises pump, thermoregulator, circulation passage and fluid media (medium), and said fluid media (medium) is filled in the said circulation passage, and said circulation passage is connected with the inflow entrance of said pump; And be connected with the flow export of said pump; Thereby form the circulation circuit of said fluid media (medium), said thermoregulator is used for making the said fluid media (medium) heating or the cooling of said circulation passage, to heat perhaps heat radiation to being arranged on said circulation circuit said cell or battery pack on every side; Said pump is provided with at least one inflow entrance and at least one flow export; Said circulation passage can form a plurality of circulation circuits, and said cell or battery pack are arranged on by in the said circulation circuit area surrounded, and the electrode tip of said cell or battery pack is provided with heat-conduction component; At least a portion of this heat-conduction component is positioned at said circulation passage, and said heat-conduction component is the electrode fin.
2. battery module according to claim 1, wherein, said thermoregulator comprises heating component and cooling package.
3. battery module according to claim 2, wherein, said heating component is the ceramic heat part, said cooling package is a condenser.
4. battery module according to claim 2, wherein, said heating component and cooling package are separately positioned in the said circulation passage and/or on the said circulation passage outer wall.
5. battery module according to claim 2; Wherein, Said battery module also comprises temperature sensor and control starter, and the temperature of the said battery module that said control starter records according to said temperature sensor is controlled the running of said humidity control system.
6. battery module according to claim 1, wherein, said fluid media (medium) is liquid or gas.
7. battery module according to claim 6, wherein, said fluid media (medium) is a silicone oil.
8. battery module according to claim 6, wherein, said fluid media (medium) can perhaps be doped with the air of heat absorption foam beads for the big gas of hot memory space.
9. battery module according to claim 1, wherein, said circulation passage is formed by the non-conductor of the heat of insulation.
10. battery module according to claim 9, wherein, the material of said circulation passage has little foaming structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810167815A CN101728595B (en) | 2008-10-10 | 2008-10-10 | Battery pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810167815A CN101728595B (en) | 2008-10-10 | 2008-10-10 | Battery pack |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101728595A CN101728595A (en) | 2010-06-09 |
| CN101728595B true CN101728595B (en) | 2012-10-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN200810167815A Active CN101728595B (en) | 2008-10-10 | 2008-10-10 | Battery pack |
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Families Citing this family (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102005603B (en) * | 2010-11-08 | 2012-11-28 | 马洪沛 | Power battery pack |
| GB2485383A (en) * | 2010-11-11 | 2012-05-16 | Ecotricity Group Ltd | A battery housing and a vehicle comprising such a housing |
| CN102468523A (en) * | 2010-11-18 | 2012-05-23 | 上海鼎研智能科技有限公司 | Battery temperature control system for cars |
| US20120315510A1 (en) * | 2011-06-08 | 2012-12-13 | Coda Automotive, Inc. | Battery pack with breathable membrane |
| CN102290619A (en) * | 2011-07-29 | 2011-12-21 | 南京双登科技发展研究院有限公司 | Power battery thermal management method |
| CN102361107A (en) * | 2011-10-18 | 2012-02-22 | 中山普润斯电源设备技术有限公司 | Power battery pack |
| CN103762397B (en) * | 2014-01-21 | 2016-08-17 | 安徽江淮汽车股份有限公司 | A kind of batteries of electric automobile refrigerating and heating combined equipment |
| CN105018044B (en) * | 2015-06-29 | 2017-12-26 | 启明信息技术股份有限公司 | A kind of electrokinetic cell low volatilization, low viscosity heat conduction silicone oil and preparation method thereof |
| KR102050531B1 (en) * | 2015-11-02 | 2019-11-29 | 주식회사 엘지화학 | Battery pack and vehicle comprising the battery pack |
| CN105789736B (en) * | 2016-04-20 | 2018-07-17 | 北京新能源汽车股份有限公司 | Battery case and vehicle with it |
| CN106004486B (en) * | 2016-05-31 | 2022-04-19 | 三门峡博睿化工技术研发有限公司 | High-rate charging system for electric automobile |
| CN106129527B (en) * | 2016-08-11 | 2019-04-26 | 江苏卓岸电源科技有限公司 | A kind of Li-ion batteries piles tab liquid cooling apparatus based on liquid cooling |
| CN106992273B (en) | 2016-09-21 | 2018-09-11 | 比亚迪股份有限公司 | Power battery pack |
| CN106374163A (en) * | 2016-11-07 | 2017-02-01 | 珠海格力电器股份有限公司 | Thermal management system for batteries |
| CN106921006A (en) * | 2017-04-24 | 2017-07-04 | 西安科技大学 | A kind of battery thermostat and system |
| CN109301376A (en) * | 2017-07-25 | 2019-02-01 | 比亚迪股份有限公司 | Cell apparatus |
| FR3078828B1 (en) * | 2018-03-08 | 2020-03-13 | Faurecia Systemes D'echappement | ELECTRIC BATTERY FOR VEHICLE |
| CN108461871B (en) * | 2018-04-04 | 2024-02-09 | 华霆（合肥）动力技术有限公司 | Flat pipe joint, heating liquid cooling device and battery module |
| CN108987855A (en) * | 2018-08-06 | 2018-12-11 | 长沙龙生光启新材料科技有限公司 | A kind of constant-temperature battery group |
| DE102022130011A1 (en) | 2022-11-14 | 2024-05-16 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Battery setup |
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| CN101728595A (en) | 2010-06-09 |
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