CN104600393A - Passive battery thermal management device - Google Patents
Passive battery thermal management device Download PDFInfo
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- CN104600393A CN104600393A CN201410846033.8A CN201410846033A CN104600393A CN 104600393 A CN104600393 A CN 104600393A CN 201410846033 A CN201410846033 A CN 201410846033A CN 104600393 A CN104600393 A CN 104600393A
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- battery
- heat pipe
- case
- box
- horizontal capillary
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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 passive battery thermal management device. The passive battery thermal management device comprises a battery pack, a battery box, a horizontal capillary heat tube in the box, a gravity heat tube, a horizontal capillary heat tube outside the box and a cooling device, wherein the battery box is sealed and is provided with a thermal preservation layer; a volatile liquid working medium is arranged in the gravity heat tube; the battery pack and the horizontal capillary heat tube in the box both are arranged in the battery box; the horizontal capillary heat tube in the box is arranged right above the battery pack, and the horizontal capillary heat tube outside the box is arranged right above the battery box; the gravity heat tube is connected with the horizontal capillary heat tube in the box and the horizontal capillary heat tube outside the box; the horizontal capillary heat tube outside the box is connected with the cooling device. The passive battery thermal management device is used for realizing the thermal management device of the battery pack by use of the gravity heat tube, namely a thermal dioxide, and the property of failure in heat conduction below a critical temperature, and can be used for solving the contradiction of the battery box between heat dissipation and thermal insulation; the battery box is sealed and is provided with the thermal preservation layer to achieve a good thermal insulation effect on the battery; as a result, maintenance is avoided in the total battery life cycle.
Description
Technical field
The invention belongs to thermal technology field and electron controls technology, relate to a kind of battery passive heat pipe reason device.
Background technology
Current heat management mode fan nothing more than, the modes such as liquid cooling pipeline, these modes need external impetus to drive, itself needs good maintenance, especially the life problems of motor system merits attention, heat management generally ignores battery pack problem at low temperatures in addition, plumbic acid cannot charge at low temperatures at all, lithium electricity charges also very difficult at low temperatures, even there is low temperature large current charge to produce and analyse lithium phenomenon, in the past current technical merit wants to solve Low Temperature Problems well, intuitively can only by the method be incubated, but specifically how to operate, use any technical method, substantially be blank at present.At low temperatures battery pack is incubated, battery can be allowed like this to have very outstanding performance northerly winter, but the use of heat-insulation layer can bring huge trouble to heat radiation in summer.Heat radiation insulation is conflict body, and how resolving this problem is an important problem,
Therefore, a kind of new battery passive heat pipe is needed to manage device to solve the problem.
Summary of the invention
Goal of the invention: the present invention is directed to battery thermal management Problems existing in prior art, provides a kind of battery passive heat pipe reason device.
Technical scheme: to achieve the above object of the invention, battery passive heat pipe of the present invention manages device by the following technical solutions:
A kind of battery passive heat pipe reason device, comprise battery pack, battery case, Horizontal capillary heat pipe in case, gravity assisted heat pipe, the outer Horizontal capillary heat pipe of case and heat abstractor, described battery case seals and is provided with heat-insulation layer, in described battery pack and case, Horizontal capillary heat pipe is all arranged in described battery case, in described case, Horizontal capillary heat pipe is arranged on directly over described battery pack, the outer Horizontal capillary heat pipe of described case is arranged on directly over described battery case, described gravity assisted heat pipe connects Horizontal capillary heat pipe and the outer Horizontal capillary heat pipe of case in described case, the outer Horizontal capillary heat pipe of described case connects described heat abstractor.
Further, the critical temperature of described gravity assisted heat pipe is 25-35 degree.When battery the temperature inside the box is more than 35 degrees Celsius time, heat pipe becomes and good passage of heat, in time heat upwards can be derived battery case, and when temperature drops to below 25 degrees Celsius in battery case, heat pipe becomes adiabatic.
Further, described heat-insulation layer adopts glass fibre doping infrared reflective material to make.There is heat insulation and fireproof performance, if this one deck thermal insulation layer of outside batteries breaking out of fire can adhere to the long period, thermal runaway occurs, because external oxygen cannot enter internal-combustion, so inside catches fire and only can be limited within very little scope if inner.
Further, also comprise heating control circuit in described battery case, described heating control circuit is used for controlling to heat to described battery pack.Battery case inside has heating control circuit, matching battery management system, can heat to battery at low temperatures.
Further, described heat abstractor is heat radiation fin.
Inventive principle: inner at battery case, is covered with Horizontal capillary heat pipe in case in the horizontal direction, is conducting on gravity assisted heat pipe in order to the heat internal battery pack.Outside at battery case, connect gravity assisted heat pipe and heat radiation fin, in order to distribute the heat of inside battery by the outer Horizontal capillary heat pipe of case.
Beneficial effect: battery passive heat pipe of the present invention reason device utilize gravity assisted heat pipe " thermal diode " and lower than critical temperature can not the character of heat conduction to realize the heat management of battery pack, can by the contradiction of the heat radiation and insulation that solve battery case, battery case seals and is provided with heat-insulation layer and can play good insulation effect to battery, can be entirely non-maintaining in battery life cycle.
Accompanying drawing explanation
Fig. 1 is the schematic diagram under battery passive heat pipe of the present invention reason device radiation pattern;
Fig. 2 is the schematic diagram under battery passive heat pipe of the present invention reason device low temperature mode.
Embodiment
Below in conjunction with the drawings and specific embodiments, illustrate the present invention further, these embodiments should be understood only be not used in for illustration of the present invention and limit the scope of the invention, after having read the present invention, the amendment of those skilled in the art to the various equivalent form of value of the present invention has all fallen within the application's claims limited range.
Refer to Fig. 1 and Fig. 2, shown in, battery passive heat pipe reason device of the present invention, comprise Horizontal capillary heat pipe 2 in battery pack, battery case 1, case, gravity assisted heat pipe 4, the outer Horizontal capillary heat pipe 5 of case and heat abstractor 6, battery case 1 seals and is provided with heat-insulation layer.Be provided with volatile liquid refrigerant 8 in gravity assisted heat pipe 4, gravity assisted heat pipe 4 is for leaning on flow by gravity type heat pipe, and there is volatile liquid refrigerant 8 inside.At high temperature, working medium circulation can derive a large amount of heat, and under low temperature, working medium can be condensed.
In battery pack and case, Horizontal capillary heat pipe 2 is all arranged in battery case 1, in case, Horizontal capillary heat pipe 2 is arranged on directly over battery pack, the outer Horizontal capillary heat pipe 5 of case is arranged on directly over battery case 1, Horizontal capillary heat pipe 2 and the outer Horizontal capillary heat pipe 5 of case in gravity assisted heat pipe 4 link box, the outer Horizontal capillary heat pipe 5 of case connects heat abstractor 6.Wherein, heat abstractor 6 is heat radiation fin.
The critical temperature of gravity assisted heat pipe 4 is 25-35 degree.When battery the temperature inside the box is more than 35 degrees Celsius time, heat pipe becomes and good passage of heat, in time heat upwards can be derived battery case, and when temperature drops to below 25 degrees Celsius in battery case, heat pipe becomes adiabatic.
Heat-insulation layer adopts glass fibre doping infrared reflective material to make.There is heat insulation and fireproof performance, if this one deck thermal insulation layer of outside batteries breaking out of fire can adhere to the long period, thermal runaway occurs, because external oxygen cannot enter internal-combustion, so inside catches fire and only can be limited within very little scope if inner.
Also comprise heating control circuit 7 in battery case, heating control circuit 7 heats to battery pack for controlling.Battery case inside has heating control circuit 7, matching battery management system, can heat to battery at low temperatures.
Inventive principle: inner at battery case, is covered with Horizontal capillary heat pipe 2 in case in the horizontal direction, in order to the heat of internal battery pack to be conducting on gravity assisted heat pipe 4.Outside at battery case, connect gravity assisted heat pipe 4 and heat radiation fin 6, in order to distribute the heat of inside battery by the outer Horizontal capillary heat pipe 5 of case.
The present invention proposes a kind of brand-new thermal management scheme.Gravity assisted heat pipe is a kind of heat pipe occurred the earliest, also be the very simple device of structure, cost is low, easy to use, it is totally-enclosed system, need anyly not safeguard, except non-metal shell is damaged, otherwise can work all the life, inside is filled with the operation material of gas-liquid critical condition, the operation material that is heated below then can gasify rapidly and heat taken to eminence, eminence is condensed into liquid backflow and is located in, rapidly heat can be passed to eminence from lower like this, so heat conductivility is extremely excellent, thousand times are exceeded than simple metal copper, more taller than diamond, gravity assisted heat pipe and the different place of other heat pipes are, can only vertically work, and can only heat conduction from bottom to top, if the above is high-temperature region, high-temperature region gaseous material condensation can not can maintain gaseous state, and the heat conduction of gaseous material is extreme difference, can not convection current downwards, the heat-insulating property close to foamed material can be obtained.So gravity assisted heat pipe has the unidirectional conducting power of similar diode.Gravity assisted heat pipe has a very important character in addition, and ordinary circumstance can uncared-for character, and namely that be at a certain temperature, and the heat conductivility of gravity assisted heat pipe can become non-constant.Liquid gas critical state has a critical temperature, can not be vaporized lower than critical temperature liquid, and such inside heat pipe just can not work, and becomes an almost adiabatic vacuum tube.Gravity assisted heat pipe " thermal diode " and can not the character of heat conduction lower than critical temperature, can by the contradiction of the heat radiation and insulation that solve battery case, select suitable working medium, critical temperature is at the gravity assisted heat pipe of 25-35 degree, when temperature in battery compartment is more than 35 degrees Celsius time, heat pipe becomes and good passage of heat, in time heat upwards can be derived battery compartment, when temperature in storehouse drops to below 25 degrees Celsius, heat pipe becomes adiabatic.
Battery passive heat pipe of the present invention reason device utilize gravity assisted heat pipe " thermal diode " and lower than critical temperature can not the character of heat conduction to realize the heat management of battery pack, can by the contradiction of the heat radiation and insulation that solve battery case, battery case seals and is provided with heat-insulation layer and can play good insulation effect to battery, can be entirely non-maintaining in battery life cycle.
Claims (5)
1. a battery passive heat pipe reason device, it is characterized in that, comprise battery pack, battery case (1), Horizontal capillary heat pipe (2) in case, gravity assisted heat pipe (4), the outer Horizontal capillary heat pipe (5) of case and heat abstractor (6), (1) is provided with heat-insulation layer with described battery case, in described battery pack and case, Horizontal capillary heat pipe (2) is all arranged in described battery case (1), in described case, Horizontal capillary heat pipe (2) is arranged on directly over described battery pack, the outer Horizontal capillary heat pipe (5) of described case is arranged on directly over described battery case (1), described gravity assisted heat pipe (4) connects Horizontal capillary heat pipe (2) and the outer Horizontal capillary heat pipe (5) of case in described case, the outer Horizontal capillary heat pipe (5) of described case connects described heat abstractor (6).
2. battery passive heat pipe reason device as claimed in claim 1, it is characterized in that, the critical temperature of described gravity assisted heat pipe (4) is 25-35 degree.
3. battery passive heat pipe reason device as claimed in claim 1, is characterized in that, described heat-insulation layer adopts glass fibre doping infrared reflective material to make.
4. battery passive heat pipe reason device as claimed in claim 1, it is characterized in that, also comprise heating control circuit (7) in described battery case, described heating control circuit (7) heats to described battery pack for controlling.
5. battery passive heat pipe reason device as claimed in claim 1, is characterized in that, described heat abstractor (6) is heat radiation fin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410846033.8A CN104600393A (en) | 2014-12-31 | 2014-12-31 | Passive battery thermal management device |
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| CN201410846033.8A CN104600393A (en) | 2014-12-31 | 2014-12-31 | Passive battery thermal management device |
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| CN104600393A true CN104600393A (en) | 2015-05-06 |
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| CN201410846033.8A Pending CN104600393A (en) | 2014-12-31 | 2014-12-31 | Passive battery thermal management device |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106571499A (en) * | 2015-10-08 | 2017-04-19 | 赵耀华 | Thermal management system and method of cuboid battery pack |
| CN106785236A (en) * | 2015-11-23 | 2017-05-31 | 赵耀华 | The heat management system and method for cylindrical cell group |
| CN106788221A (en) * | 2017-01-06 | 2017-05-31 | 华北电力大学 | A kind of solar panel temperature control device |
| CN106935937A (en) * | 2017-03-09 | 2017-07-07 | 宁波诺丁汉大学 | A kind of electric automobile lithium battery heat management system based on heat pipe |
| CN107331916A (en) * | 2017-07-05 | 2017-11-07 | 季弘 | Battery thermal management method in enclosed cell case |
| CN109830776A (en) * | 2019-01-22 | 2019-05-31 | 重庆交通大学 | Thermal management device of battery |
| CN109860948A (en) * | 2019-01-22 | 2019-06-07 | 重庆交通大学 | Battery solenoid heat management device |
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2014
- 2014-12-31 CN CN201410846033.8A patent/CN104600393A/en active Pending
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106571499A (en) * | 2015-10-08 | 2017-04-19 | 赵耀华 | Thermal management system and method of cuboid battery pack |
| CN106571499B (en) * | 2015-10-08 | 2023-05-12 | 赵耀华 | Thermal management system and method for cuboid battery pack |
| CN106785236A (en) * | 2015-11-23 | 2017-05-31 | 赵耀华 | The heat management system and method for cylindrical cell group |
| CN106785236B (en) * | 2015-11-23 | 2023-05-12 | 赵耀华 | Thermal management system and method for cylindrical battery pack |
| CN106788221A (en) * | 2017-01-06 | 2017-05-31 | 华北电力大学 | A kind of solar panel temperature control device |
| CN106788221B (en) * | 2017-01-06 | 2019-02-05 | 华北电力大学 | A kind of solar panel temperature control device |
| CN106935937A (en) * | 2017-03-09 | 2017-07-07 | 宁波诺丁汉大学 | A kind of electric automobile lithium battery heat management system based on heat pipe |
| CN107331916A (en) * | 2017-07-05 | 2017-11-07 | 季弘 | Battery thermal management method in enclosed cell case |
| CN109830776A (en) * | 2019-01-22 | 2019-05-31 | 重庆交通大学 | Thermal management device of battery |
| CN109860948A (en) * | 2019-01-22 | 2019-06-07 | 重庆交通大学 | Battery solenoid heat management device |
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Application publication date: 20150506 |