CN105406152A - Thermal management system for lithium-ion battery in power car - Google Patents
Thermal management system for lithium-ion battery in power car Download PDFInfo
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- CN105406152A CN105406152A CN201510881673.7A CN201510881673A CN105406152A CN 105406152 A CN105406152 A CN 105406152A CN 201510881673 A CN201510881673 A CN 201510881673A CN 105406152 A CN105406152 A CN 105406152A
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- ion battery
- lithium
- management system
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- change material
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The invention discloses a thermal management system for a lithium-ion battery in a power car. The lithium-ion battery comprises at least one battery pack, wherein each battery pack comprises a plurality of rectangular single lithium-ion battery bodies which are arranged front to back in parallel; the thermal management system is characterized by comprising fins and a phase-change material; each fin is arranged on each of the front and back two end surfaces of each single lithium-ion battery body; a sealed space is formed in each of the left side and the right side of each single lithium-ion battery body; each sealed space is surrounded by each single lithium-ion battery body and corresponding two fins and one baffle plate; each baffle plate is fixedly connected with two fins; and each sealed space is filled with the phase-change material. According to the thermal management system, the temperature of the battery can be controlled within an appropriate range in a natural convection condition; a good cooling effect is achieved; extra energy does not need to consume; the structure is simple; and too many devices are not needed.
Description
Technical field
The present invention relates to temperature of powered cell control field, particularly relate to the heat management system of lithium ion battery in a kind of power vehicle.
Background technology
Battery is the important component part of electric automobile, and the quality of its operating state directly affects fail safe and the economy of car load, and the performance of battery pack and temperature closely related.If battery pack can not get timely ventilation and heat in the case of a high temperature, will cause that battery pack temperature is too high or temperature distributing disproportionation is even, reduce the charge and discharge cycles efficiency of battery the most at last, the power and the energy that affect battery play, also will cause thermal runaway time serious, affect the safety and reliability of battery.
At present, the radiating mode of battery pack mainly contains air-cooling, liquid cools method, phase-change material cooling method and heat pipe cooling method etc.Air-cooling structure is simple, cost is low, but radiating effect cannot reach requirement under heavy load; Liquid cools method energy effective cooling battery pack and realize uniformity of temperature profile between battery, but complex structure, volume and quality larger; Phase-change material cooling method structure is simple, and have good hot cushioning effect, but can only work in transition temperature range, under large loading condiction, radiating effect is undesirable; Heat pipe cooling method can solve battery pack heat dissipation problem effectively, but system complex, and the unidirectional heat transfer of heat pipe, be difficult to heat battery pack.
Chinese patent literature CN103138029A, on June 5th, 2013, discloses the heat management system of lithium battery in a kind of hybrid vehicle, adopts the mode be arranged on battery end-face by phase-change material to dispel the heat.Phase-change material cooling structure is simple, have good hot buffering effect, but when it undergoes phase transition thawing, thermal conductivity is very low, not only can not play thermolysis, can increase thermal resistance on the contrary, hinders shedding of heat.
Summary of the invention
The present invention provides the heat management system of lithium ion battery in a kind of power vehicle for solving in known technology the technical problem that exists, and this system can reach good cooling effect under Natural Convection Conditions.
The technical scheme that the present invention takes for the technical problem existed in solution known technology is: the heat management system of lithium ion battery in a kind of power vehicle, described lithium ion battery comprises at least one battery pack, each described battery pack comprises the rectangle lithium-ion battery monomer that multiple front and back are arranged side by side, this heat management system comprises fin and phase-change material, former and later two end faces of each described lithium-ion battery monomer are respectively provided with a described fin, a seal cavity is each side formed at each described lithium-ion battery monomer, described seal cavity is surrounded by described lithium-ion battery monomer and corresponding with it two described fins and a baffle plate, described baffle plate and two described fins affixed, described fin is provided with the over-hang part stretched out outside described baffle plate, described phase-change material is filled with in described seal cavity.
Described fin is rectangle aluminium flake or copper sheet.
Described phase-change material is paraffin.
Described baffle plate is adopted and is made of aluminum or copper.
The advantage that the present invention has and good effect are: the mode combined that employing fin dispels the heat and phase-change material dispels the heat, and adopt structure phase-change material being sealed in battery both sides, make phase-change material after thawing is for liquid, battery thermal resistance can not be increased, obstruction battery dispels the heat, make the present invention can reach good cooling effect under Natural Convection Conditions, do not need to consume extra energy.When ambient temperature is lower, phase-change material can also play the effect of heating, insulation.The present invention adopts the local gap between phase-change material filling fin, not only can meet cooling requirements, and can reduce the weight of system, save material.And structure of the present invention is simple, does not need too many equipment.
Accompanying drawing explanation
Fig. 1 is vertical view of the present invention;
Fig. 2 is the end view of Fig. 1.
In figure: 1, lithium-ion battery monomer, 2, phase-change material, 3, fin, 4, baffle plate.
Embodiment
For summary of the invention of the present invention, Characteristic can be understood further, hereby exemplify following examples, and coordinate accompanying drawing to be described in detail as follows:
Refer to Fig. 1 ~ Fig. 2, the heat management system of lithium ion battery in a kind of power vehicle, described lithium ion battery comprises at least one battery pack, and each described battery pack comprises the rectangle lithium-ion battery monomer 1 that multiple front and back are arranged side by side, and this heat management system comprises fin 3 and phase-change material 2; Former and later two end faces of each described lithium-ion battery monomer 1 are respectively provided with a described fin 3, a seal cavity is each side formed at each described lithium-ion battery monomer 1, described seal cavity is surrounded by described lithium-ion battery monomer 1 and corresponding with it two described fins 3 and a baffle plate 4, described baffle plate 4 and two described fins 3 affixed, described fin 3 is provided with the over-hang part stretched out outside described baffle plate 4; Described phase-change material 2 is filled with in described seal cavity.Leak when absorbing heat melt to prevent phase-change material.
In the present embodiment, it is adopt the aluminium or copper one-tenth with high heat conductance that described fin 3 adopts, and adopts rectangular configuration.Large with the contact area of battery, contribute to the temperature distribution evenness improving battery pack.Fin stretches out the both sides of the edge of battery, for dispelling the heat with natural convection air.Described phase-change material 2 can be paraffin or phase transition temperature is lower, latent heat is larger other material.Phase-change material is placed on the both sides of battery pack, is used for auxiliary heat dissipation.Described baffle plate 4 is adopted and is made of aluminum or copper, and is used for sealing the heat in phase-change material and derivation phase-change material, accelerates heat radiation.
Operation principle of the present invention:
When battery low-rate discharge, there is convection current in lithium-ion battery monomer 1 and fin 3, by the heat conduction of generation to fin 3.Fin 3 thermal conductivity is higher, can transfer heat to its over-hang part fast, the over-hang part of fin and air generation Natural Heat Convection.
When battery discharge multiplying power is higher, the heat that lithium-ion battery monomer 1 produces is more, and the heat that fin 3 is derived is less than the heat that battery produces, fin 3 occurs that heat is saturated, and now convection current occurs for phase-change material 2 and fin 3, absorbs heat, and store with the form of sensible heat, reduce the heat load of fin.When reaching phase transition temperature, phase-change material undergoes phase transition.When ambient temperature is lower, phase-change material can also play the effect of heating lithium-ion battery monomer 1 and being incubated.Therefore, phase-change material 2 pairs of battery heat radiations have good hot buffering effect.
The present invention selects fin structure, is that conductive coefficient is high because fin area of dissipation is comparatively large, be arranged on former and later two end faces of lithium-ion battery monomer, when battery power discharge multiplying power is not high, heat can shed by fin fast, and battery can be made to have good temperature homogeneity.
Under Natural Convection Conditions, when battery high rate discharge, single fin cooling is difficult to the temperature of battery to control in suitable temperature range, the present invention cools in conjunction with phase-change material, utilize the hot buffering effect of phase-change material, adopt and form seal cavity in battery both sides, phase-change material is filled to the structure in seal cavity, the temperature of battery can be controlled in optimum temperature range (20 DEG C-50 DEG C).
Although be described the preferred embodiments of the present invention by reference to the accompanying drawings above; but the present invention is not limited to above-mentioned embodiment; above-mentioned embodiment is only schematic; be not restrictive; those of ordinary skill in the art is under enlightenment of the present invention; do not departing under the ambit that present inventive concept and claim protect, can also make a lot of form, these all belong within protection scope of the present invention.
Claims (4)
1. the heat management system of lithium ion battery in a power vehicle, described lithium ion battery comprises at least one battery pack, each described battery pack comprises the rectangle lithium-ion battery monomer that multiple front and back are arranged side by side, it is characterized in that, this heat management system comprises fin and phase-change material, former and later two end faces of each described lithium-ion battery monomer are respectively provided with a described fin, a seal cavity is each side formed at each described lithium-ion battery monomer, described seal cavity is surrounded by described lithium-ion battery monomer and corresponding with it two described fins and a baffle plate, described baffle plate and two described fins affixed, described fin is provided with the over-hang part stretched out outside described baffle plate, described phase-change material is filled with in described seal cavity.
2. the heat management system of lithium ion battery in power vehicle according to claim 1, it is characterized in that, described fin is rectangle aluminium flake or copper sheet.
3. the heat management system of lithium ion battery in power vehicle according to claim 1, it is characterized in that, described phase-change material is paraffin.
4. the heat management system of lithium ion battery in power vehicle according to claim 1, it is characterized in that, described baffle plate is adopted and is made of aluminum or copper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510881673.7A CN105406152A (en) | 2015-12-03 | 2015-12-03 | Thermal management system for lithium-ion battery in power car |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510881673.7A CN105406152A (en) | 2015-12-03 | 2015-12-03 | Thermal management system for lithium-ion battery in power car |
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| CN105406152A true CN105406152A (en) | 2016-03-16 |
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| CN201510881673.7A Pending CN105406152A (en) | 2015-12-03 | 2015-12-03 | Thermal management system for lithium-ion battery in power car |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106785194A (en) * | 2016-12-08 | 2017-05-31 | 德阳九鼎智远知识产权运营有限公司 | A kind of lithium dynamical battery |
| CN106784922A (en) * | 2017-02-15 | 2017-05-31 | 天津大学 | Using the logical direct current electrical heating Proton Exchange Membrane Fuel Cells cold-starting device of graphite cake |
| CN114243165A (en) * | 2021-12-14 | 2022-03-25 | 重庆大学 | Lithium ion battery thermal management system |
| CN114639866A (en) * | 2022-03-10 | 2022-06-17 | 武汉理工大学 | Lithium ion battery thermal management device based on composite phase change material and liquid cooling |
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| CN103138029A (en) * | 2013-03-06 | 2013-06-05 | 湖南大学 | Thermal management system of lithium battery in hybrid power vehicle |
| CN203103466U (en) * | 2013-03-06 | 2013-07-31 | 湖南大学 | Thermal management system for lithium batteries of hybrid electric vehicle |
| CN203339275U (en) * | 2013-06-20 | 2013-12-11 | 华南理工大学 | Air-cooling battery heat management device containing phase-change material for electric vehicle |
| US20150037647A1 (en) * | 2013-07-30 | 2015-02-05 | Johnson Controls Technology Company | Battery module with cooling features |
| CN205159471U (en) * | 2015-12-03 | 2016-04-13 | 天津大学 | Lithium ion battery's thermal management system in power car |
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2015
- 2015-12-03 CN CN201510881673.7A patent/CN105406152A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN202758989U (en) * | 2012-07-13 | 2013-02-27 | 八叶(厦门)新能源科技有限公司 | Battery system with multi-medium cooling source |
| CN103138029A (en) * | 2013-03-06 | 2013-06-05 | 湖南大学 | Thermal management system of lithium battery in hybrid power vehicle |
| CN203103466U (en) * | 2013-03-06 | 2013-07-31 | 湖南大学 | Thermal management system for lithium batteries of hybrid electric vehicle |
| CN203339275U (en) * | 2013-06-20 | 2013-12-11 | 华南理工大学 | Air-cooling battery heat management device containing phase-change material for electric vehicle |
| US20150037647A1 (en) * | 2013-07-30 | 2015-02-05 | Johnson Controls Technology Company | Battery module with cooling features |
| CN205159471U (en) * | 2015-12-03 | 2016-04-13 | 天津大学 | Lithium ion battery's thermal management system in power car |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106785194A (en) * | 2016-12-08 | 2017-05-31 | 德阳九鼎智远知识产权运营有限公司 | A kind of lithium dynamical battery |
| CN106784922A (en) * | 2017-02-15 | 2017-05-31 | 天津大学 | Using the logical direct current electrical heating Proton Exchange Membrane Fuel Cells cold-starting device of graphite cake |
| CN106784922B (en) * | 2017-02-15 | 2023-09-22 | 天津大学 | Cold starting device for heating proton exchange membrane fuel cell by using graphite plate to supply direct current |
| CN114243165A (en) * | 2021-12-14 | 2022-03-25 | 重庆大学 | Lithium ion battery thermal management system |
| CN114243165B (en) * | 2021-12-14 | 2023-10-31 | 重庆大学 | Lithium ion battery thermal management system |
| CN114639866A (en) * | 2022-03-10 | 2022-06-17 | 武汉理工大学 | Lithium ion battery thermal management device based on composite phase change material and liquid cooling |
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Application publication date: 20160316 |