CN102376997A - Battery system with temperature adjusting device - Google Patents
Battery system with temperature adjusting device Download PDFInfo
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- CN102376997A CN102376997A CN2011103808967A CN201110380896A CN102376997A CN 102376997 A CN102376997 A CN 102376997A CN 2011103808967 A CN2011103808967 A CN 2011103808967A CN 201110380896 A CN201110380896 A CN 201110380896A CN 102376997 A CN102376997 A CN 102376997A
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Abstract
The invention relates to a battery system with a temperature adjusting device; by changing the filling mode of the traditional phase-change material in a battery pack, the temperature adjusting device which is convenient to dismantle and uses a high temperature phase-change material and a low temperature phase-change material is adopted in the battery system; and respectively aiming at high temperature and low temperature working environments, the invention provides a temperature adjusting method which has the advantages of having low cost, being simple and convenient to operate and maintain and being beneficial to increasing the operating performance, the safety and the reliability of the battery.
Description
Technical field
The present invention relates to a kind of thermostatic battery system that has, relate in particular to a kind of thermostatic lithium-ion battery systems that has.
Background technology
Secondary cell all can be emitted heat in the course of work of charging and discharge raise battery temperature; The electrokinetic cell particularly high power discharge and the quick charge of used for electric vehicle dynamic lithium battery is the development in future direction, and this also will cause, and temperature promotes greatly when battery operated.Temperature is one of main factor that influences battery performance, and temperature is too high to cause the side reaction aggravation, causes shorter battery life, and electrolyte decomposition produces a large amount of gases, hidden danger such as that the rapid increase of internal pressure and heat might cause is on fire, blast.The too low active material that causes of temperature can not be brought into play fully, and battery low temperature discharge capacity is low, is difficult to satisfy the demand of low temperature environment.Secondary cell has best serviceability temperature scope; At-10 ~ 60 ℃, the Li ion battery is between 0 ~ 60 ℃, above 60 ℃ like Ni-Cd, Ni-MH battery; Battery safety is difficult to guarantee; Be lower than-20 ℃, battery capacity and cycle life all will reduce greatly, therefore keep suitable battery serviceability temperature to help increasing the service life, improving battery security.
The research of present stage mainly concentrates on the cooling direction of battery, and is less for the research of battery low temperature discharge temperature, and the air-cooled technical efficiency of tradition use is low, noise big, non-uniform temperature, and battery status is inconsistent; Then cause complex structure, sealing requirements height, the increase of battery pack space, battery weight increase etc. easily with the liquid cooling technology, and energy air-cooled, that liquid cooling all needs consuming cells group itself, serviceability influenced.Phase-change material becomes the research focus at present, and phase-change material has the ability that in certain temperature range, changes its physical state.With the solid-liquid phase change is example, when being heated to fusion temperature, just produces the phase transformation from solid-state to liquid state, and in the process of fusing, the phase-change material absorption also stores a large amount of latent heat; When phase-change material cooled off, the heat of storage will be dispersed in the environment in certain temperature range and go, and carries out from liquid state to solid-state reverse transformation.In these two kinds of phase transition process, energy stored or that discharge is called latent heat of phase change.When physical state changed, the temperature of material self almost remained unchanged before phase transformation is accomplished, and forms a wide temperature platform, though temperature-resistant, the latent heat that absorbs or discharge is quite big.Because phase-change material has thermal capacitance bigger in the narrow temperature range, so battery pack system is heated can be applied in high-power discharging and recharging the time or cool off.
Traditional phase-change material concentrates on the cooling heat dissipation mode; A kind of heat-dissipating method of power lithium battery is disclosed like patent application 200910184584.1; Fill paraffin/GMB/ graphite composite material in the lithium battery interior gap, transformation temperature is used for the heat radiation of the power lithium battery of high power and fast charging and discharging at 15 ~ 55 ℃; But, cause battery distortion or corrosion because phase transformation often follows change in volume and solid-liquid to change.Patent 200510087108.X discloses a kind of cell charger box; Solid adopt solid-or the solid-liquid phase change material as the battery cooling device, use the material that formalizes such as polyethylene, polypropylene, polyvinyl chloride, can effectively control distortion; But its phase transition temperature interval is bigger; Device promptly begins to cool down at 10 ℃, but the optimum working temperature of lithium ion battery is 20 ~ 40 ℃, so can influence the charge-discharge performance of battery.
Traditional phase-change material pooled applications is at the high temperature cooling heat dissipation of battery, less battery operated state when considering low temperature environment; And deflection is excessive and cause battery crimp in the time of possibly causing phase-change material two to change mutually the mode that phase-change material is filled in the inside battery gap; The wide in range battery phase-change material when need not cooling off or heat that then can cause of phase transition temperature interval has begun to absorb or emit latent heat of phase change, causes waste and influences battery performance.
More than invention mainly all is the high temperature heat radiation cooling aspect to battery pack, does not relate to the work of battery under cryogenic conditions, and battery decreased performance under low temperature environment can't to adapt to northern cold environment for use also be problem demanding prompt solution.
Summary of the invention
A kind of thermostatic battery system that has provided by the invention guarantees that battery pack works in the rational temperature interval, the performance reduction of avoiding fail safe that high temperature causes and low temperature to cause.Through the temperature-adjusting device of being convenient to remove and install, utilize phase-change material to absorb and discharge the purpose that latent heat of phase change reaches cooling or heating battery system in phase transition temperature interval.
In order to achieve the above object; The present invention provides a kind of thermostatic battery system that has; Comprise the battery system lagging casing; Be arranged on the battery pack in the lagging casing, this battery system also has the temperature-adjusting device that contacts setting with battery pack, and described temperature-adjusting device comprises high temperature heat absorption cooling device and low temperature heat release attemperator.
Described battery pack comprises some cells, and insulating barrier is set between the cell, on each cell conducting strip is installed, and conducting strip is connected with temperature-adjusting device.
Some boss are set on the described insulating barrier.
Through number of metal brace and trip bolt cell is interconnected, the outside of battery pack coats heat insulation layer, and battery pack is arranged in the lagging casing through construct.
In the described temperature-adjusting device phase-change material is set, some heat conductive filaments also are set, the number of metal heat transfer sheet also is set on the temperature-adjusting device, this metal heat transfer sheet contacts with the conducting strip of cell.
The quantity of the cell in the quantity of described metal heat transfer sheet and the battery pack is consistent.
Phase-change material in the described high temperature heat absorption cooling device is a high temperature phase change material (pcm), and the phase-change material in the described low temperature heat release attemperator is a low-temperature phase-change material.
Described temperature-adjusting device is perhaps pegged graft through riveted joint, and perhaps thread connecting mode carries out installing/dismounting.
Described high temperature phase change material (pcm) is inorganic salts, or organic acid, or polyalcohol, or the polyethylene glycol polyethylene.
Described low-temperature phase-change material is a polyalcohol.
The present invention is filled in the inner mode of battery pack through changing traditional phase-change material; Use the temperature-adjusting device of easy-to-mount use high temperature phase change material (pcm) and low-temperature phase-change material; Respectively to high temperature and low-temperature working environment; Provide a kind of with low cost, simple and convenient operation and maintenance helps improving the temperature control method of battery operated performance and fail safe, reliability.
Description of drawings
Fig. 1 is a kind of structural representation with thermostatic battery system provided by the invention;
Fig. 2 is the structural representation of battery pack of the present invention;
Fig. 3 is a thermostatic structural representation of the present invention.
Embodiment
Following according to Fig. 1～Fig. 3, specify preferred embodiment of the present invention.
As shown in Figure 1; The present invention provides a kind of thermostatic battery system that has; Comprise battery system lagging casing 1; Be arranged on the battery pack 2 in the lagging casing 1, and contact the temperature-adjusting device that is provided with battery pack 2, described temperature-adjusting device comprises high temperature heat absorption cooling device 3 and low temperature heat release attemperator 4;
As shown in Figure 2, described battery pack 2 comprises some cells 7, through number of metal brace 8 and trip bolt 9 cell 7 is interconnected; Be provided with the insulating barrier 13 of boss 16 between the cell 7; Cell 7 is separated to reach the effect of insulation, on each cell 7 conducting strip 12 is installed, conducting strip 12 is connected with temperature-adjusting device; The outside of battery pack 2 coats heat insulation layer 10, and battery pack 2 is fixedly installed in the lagging casing 1 through structural member 11;
As shown in Figure 3, in the described temperature-adjusting device phase-change material is set, some heat conductive filaments 14 also are set; Be used for increasing contact area with phase-change material; Improve thermal conductivity, number of metal heat transfer sheet 15 also is set on the temperature-adjusting device, this metal heat transfer sheet 15 contacts with the conducting strip 12 of cell; Carry out heat transferred, the quantity of the cell 7 in the quantity of this metal heat transfer sheet and the battery pack 2 is consistent;
Phase-change material in the described high temperature heat absorption cooling device 3 is a high temperature phase change material (pcm) 5, and the phase-change material in the described low temperature heat release attemperator 4 is a low-temperature phase-change material 6;
Described temperature-adjusting device can be through installing/dismounting easily such as the mode of riveting, peg graft, be threaded.
Further the course of work of the present invention is described below.
As stated; The present invention is divided into the battery system thermal adaptability cooling and heats two parts; Through the characteristic of phase-change material, adopt and change thermostatic method, effectively control battery temperature and be in all the time within the rational working temperature interval; The performance of battery can be promoted greatly, and fail safe and reliability can be strengthened.
The described battery pack of the embodiment of the invention is made up of a plurality of cell 7 serial or parallel connections, and the not concrete restriction of said battery can freely be chosen from chargeable secondary cell.Battery preferred, lithium ion secondary battery of the present invention, lighium polymer secondary battery, nickel metal secondary batteries or fuel cell.
The described cell of the embodiment of the invention is through the L type conducting strip 12 conduction heats of closed at both ends, and conducting strip directly contacts with cell, and heat-conducting effect is good, preferred thin aluminum sheet.
In order to play insulating effect; Separate by the insulating barrier with boss 13 between the embodiment of the invention described conducting strip 12 outsides and the adjacent monomer battery 7; The size of boss can the different adjustment with the model of cell with height; The quantity of boss can be set according to the size and the environment for use of battery with size, and insulating barrier 13 is processed by the insulating material of corrosion-and high-temp-resistant, preferred epoxy plate or PET material.Both can play the certain intensity effect, and also can guarantee insulation, the design of boss has been reserved the expansion space for battery again, and low processing cost.
The present invention is directed to the hot environment of battery and the phase-change material that low temperature environment uses cooling heat dissipation and two kinds of functions of heated protective respectively; Through being convenient to the structural design of installation and removal; The temperature spot that need cool off or heat in battery pack carries out phase transformation reaction, reaches thermoregulator effect.Phase-change material can be admittedly-solid phase also can be the solid-liquid phase, only needs control narrow phase transition temperature interval and distortion.Battery pack system be adiabatic or with external heat exchange small construction; When summer; Outdoor temperature surpasses 30 ℃, and the temperature of battery in long-time or fast charging and discharging process will also certainly be higher, and high temperature heat absorption cooling device is installed; When battery pack surpasses uniform temperature, begin to absorb latent heat of phase change and reach cooling purpose.In like manner, in the winter time, outdoor temperature is lower than-20 ℃, and cell discharge performance reduces greatly, and the low temperature heat release attemperator that changes the outfit when battery pack temperature is lower than a certain temperature, is emitted the purpose that latent heat of phase change plays the heating battery group.
High temperature heat absorption cooling device includes high temperature phase change material (pcm), and when temperature was higher than battery system best effort interval, phase-change material changed, and absorbed great amount of heat.High temperature phase change material (pcm) can be according to composite materials such as battery optimum working temperature interval selection inorganic salts, organic acid, polyalcohol and polyethylene glycol polyethylene.Low temperature heat release attemperator includes low-temperature phase-change material, and when temperature was lower than battery system best effort interval, phase-change material changed, and emits great amount of heat.Low-temperature phase-change material can be according to battery best effort interval selection polyalcohol etc.
The present invention adopts and changes thermostatic method, makes battery system have the function of cooling and heating, can effectively carry out heating and cooling to battery pack through temperature-adjusting device, has promoted the serviceability and the fail safe of battery.The heat of each cell contacts through the conducting strip temperature-adjusting device uniformly, can play balanced effect, thereby has strengthened the circulation consistency of battery pack, has improved the life-span of battery pack circulation.The present invention has obtained following beneficial effect:
1, adopt the high temperature cooling heat dissipation, the notion of low-temperature heat protection, favourable stable performance with battery performance has improved the fail safe and the reliability of battery;
2, the phase transition temperature method of regulating can the effective simplification battery system structure, has reduced the design of battery pack air cooling air channel, and bulk and processing cost have been saved in the design of liquid cooling runner;
3, adopt conducting strip and temperature-adjusting device to carry out exchange heat, can make the consistency of each cell temperature good, can effectively avoid the unbalanced decay that causes on the battery performance of temperature, the cycle life and the fail safe that have improved battery pack;
4, battery system structure is simple, is fit to high-power big capacity discharge demand, and therefore, the present invention can be as the power supply corollary apparatus of motor vehicle and hybrid electric vehicle.
Although content of the present invention has been done detailed introduction through above-mentioned preferred embodiment, will be appreciated that above-mentioned description should not be considered to limitation of the present invention.After those skilled in the art have read foregoing, for multiple modification of the present invention with to substitute all will be conspicuous.Therefore, protection scope of the present invention should be limited appended claim.
Claims (10)
1. one kind has thermostatic battery system; Comprise battery system lagging casing (1); Be arranged on the battery pack (2) in the lagging casing (1); It is characterized in that this battery system also has the temperature-adjusting device that contacts setting with battery pack (2), described temperature-adjusting device comprises high temperature heat absorption cooling device (3) and low temperature heat release attemperator (4).
2. as claimed in claim 1 have a thermostatic battery system; It is characterized in that; Described battery pack (2) comprises some cells (7); Insulating barrier (13) is set between the cell (7), conducting strip (12) is installed on each cell (7), conducting strip (12) is connected with temperature-adjusting device.
3. as claimed in claim 2 have a thermostatic battery system, it is characterized in that, some boss (16) are set on the described insulating barrier (13).
4. as claimed in claim 2 have a thermostatic battery system; It is characterized in that; Through number of metal brace (8) and trip bolt (9) cell (7) is interconnected; The outside of battery pack (2) coats heat insulation layer (10), and battery pack (2) is fixedly installed in the lagging casing (1) through structural member (11).
5. as claimed in claim 2 have a thermostatic battery system; It is characterized in that; In the described temperature-adjusting device phase-change material is set; Some heat conductive filaments (14) also are set, number of metal heat transfer sheet (15) also is set on the temperature-adjusting device, this metal heat transfer sheet (15) contacts with the conducting strip (12) of cell.
6. as claimed in claim 5 have a thermostatic battery system, it is characterized in that, the quantity of the cell (7) in (15) quantity of described metal heat transfer sheet and the battery pack (2) is consistent.
7. as claimed in claim 4 have a thermostatic battery system; It is characterized in that; Phase-change material in the described high temperature heat absorption cooling device (3) is high temperature phase change material (pcm) (5), and the phase-change material in the described low temperature heat release attemperator (4) is low-temperature phase-change material (6).
8. as claimed in claim 1 have a thermostatic battery system, it is characterized in that, described temperature-adjusting device is perhaps pegged graft through riveted joint, and perhaps thread connecting mode carries out installing/dismounting.
9. as claimed in claim 7 have a thermostatic battery system, it is characterized in that described high temperature phase change material (pcm) is inorganic salts, or organic acid, or polyalcohol, or the polyethylene glycol polyethylene.
10. as claimed in claim 7 have a thermostatic battery system, it is characterized in that described low-temperature phase-change material is a polyalcohol.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN 201110380896 CN102376997B (en) | 2011-11-25 | 2011-11-25 | Battery system with temperature adjusting device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201110380896 CN102376997B (en) | 2011-11-25 | 2011-11-25 | Battery system with temperature adjusting device |
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| CN102376997A true CN102376997A (en) | 2012-03-14 |
| CN102376997B CN102376997B (en) | 2013-10-02 |
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| CN 201110380896 Expired - Fee Related CN102376997B (en) | 2011-11-25 | 2011-11-25 | Battery system with temperature adjusting device |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102751451A (en) * | 2012-07-05 | 2012-10-24 | 同济大学 | Auxiliary constant-temperature battery box |
| CN103022590A (en) * | 2012-09-26 | 2013-04-03 | 浙江吉利汽车研究院有限公司杭州分公司 | Battery heating system of electric automobile |
| CN103748735A (en) * | 2012-06-15 | 2014-04-23 | 观致汽车有限公司 | Battery energy draining method and system |
| CN104241565A (en) * | 2014-07-30 | 2014-12-24 | 浙江超威创元实业有限公司 | Lithium battery provided with fire-proof and explosion-proof device and electric car adopting battery |
| CN106785181A (en) * | 2015-11-20 | 2017-05-31 | 哈尔滨智明科技有限公司 | A kind of temprature control method of power battery module |
| CN107819158A (en) * | 2017-11-22 | 2018-03-20 | 东莞市超鸿自动化设备有限公司 | Battery core baking fixture and the method for battery core baking |
| CN111082185A (en) * | 2019-12-09 | 2020-04-28 | 全球能源互联网欧洲研究院 | Composite binary phase change material and application thereof in battery thermal management system |
| CN112133486A (en) * | 2020-09-08 | 2020-12-25 | 万金山 | Double-phase type self-flowing temperature-changing control cable |
| WO2022042385A1 (en) * | 2020-08-28 | 2022-03-03 | 深圳市璞厉科技有限公司 | Battery pack |
| CN118254648A (en) * | 2024-05-31 | 2024-06-28 | 长城汽车股份有限公司 | Cold start control method and device and vehicle |
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| CN101814620A (en) * | 2009-02-25 | 2010-08-25 | Sb锂摩托有限公司 | Battery |
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Patent Citations (3)
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| CN101734133A (en) * | 2008-11-05 | 2010-06-16 | 新奥科技发展有限公司 | Heating temperature-control system for power battery |
| CN101814620A (en) * | 2009-02-25 | 2010-08-25 | Sb锂摩托有限公司 | Battery |
| CN102163759A (en) * | 2011-03-15 | 2011-08-24 | 东莞新能源科技有限公司 | Battery pack |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103748735B (en) * | 2012-06-15 | 2016-03-30 | 观致汽车有限公司 | A kind of energy content of battery consumption systems and method |
| CN103748735A (en) * | 2012-06-15 | 2014-04-23 | 观致汽车有限公司 | Battery energy draining method and system |
| CN102751451A (en) * | 2012-07-05 | 2012-10-24 | 同济大学 | Auxiliary constant-temperature battery box |
| CN102751451B (en) * | 2012-07-05 | 2015-01-14 | 同济大学 | Auxiliary constant-temperature battery box |
| CN103022590A (en) * | 2012-09-26 | 2013-04-03 | 浙江吉利汽车研究院有限公司杭州分公司 | Battery heating system of electric automobile |
| CN103022590B (en) * | 2012-09-26 | 2015-03-25 | 浙江吉利汽车研究院有限公司杭州分公司 | Battery heating system of electric automobile |
| CN104241565A (en) * | 2014-07-30 | 2014-12-24 | 浙江超威创元实业有限公司 | Lithium battery provided with fire-proof and explosion-proof device and electric car adopting battery |
| CN106785181A (en) * | 2015-11-20 | 2017-05-31 | 哈尔滨智明科技有限公司 | A kind of temprature control method of power battery module |
| CN107819158A (en) * | 2017-11-22 | 2018-03-20 | 东莞市超鸿自动化设备有限公司 | Battery core baking fixture and the method for battery core baking |
| CN107819158B (en) * | 2017-11-22 | 2024-04-02 | 东莞市超鸿自动化设备有限公司 | Battery cell baking clamp and battery cell baking method |
| CN111082185A (en) * | 2019-12-09 | 2020-04-28 | 全球能源互联网欧洲研究院 | Composite binary phase change material and application thereof in battery thermal management system |
| CN111082185B (en) * | 2019-12-09 | 2023-08-29 | 全球能源互联网欧洲研究院 | Composite binary phase change material and application thereof in battery thermal management system |
| WO2022042385A1 (en) * | 2020-08-28 | 2022-03-03 | 深圳市璞厉科技有限公司 | Battery pack |
| CN112133486A (en) * | 2020-09-08 | 2020-12-25 | 万金山 | Double-phase type self-flowing temperature-changing control cable |
| CN118254648A (en) * | 2024-05-31 | 2024-06-28 | 长城汽车股份有限公司 | Cold start control method and device and vehicle |
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| CN102376997B (en) | 2013-10-02 |
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