CN206322817U - A kind of power battery thermal management system based on semiconductor chilling plate - Google Patents

A kind of power battery thermal management system based on semiconductor chilling plate Download PDF

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Publication number
CN206322817U
CN206322817U CN201621336073.9U CN201621336073U CN206322817U CN 206322817 U CN206322817 U CN 206322817U CN 201621336073 U CN201621336073 U CN 201621336073U CN 206322817 U CN206322817 U CN 206322817U
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China
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chilling plate
semiconductor chilling
battery case
heat
power battery
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CN201621336073.9U
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柯炯
宋宏贵
任卫群
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Dongfeng Commercial Vehicle Co Ltd
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Dongfeng Commercial Vehicle Co Ltd
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

Abstract

A kind of power battery thermal management system based on semiconductor chilling plate, including Battery case (1) and semiconductor chilling plate (3), the two sides of the semiconductor chilling plate (3) is respectively cold end and hot junction, the one side of semiconductor chilling plate (3) fits with Battery case (1), and the another side of semiconductor chilling plate (3) is fitted with heat sink (4).The heat management function to electrokinetic cell is realized using semiconductor chilling plate (3), the complexity of power battery thermal management system is reduced, system cost is reduced, the security reliability of system operation is improved, the competitiveness of product is lifted.

Description

A kind of power battery thermal management system based on semiconductor chilling plate
Technical field
The utility model is related to a kind of power battery thermal management system, and semiconductor refrigerating is based on more specifically to one kind The power battery thermal management system of piece, belongs to electric automobile power battery thermal management technology field.
Background technology
The major function of electric automobile power battery heat management system includes:It is carried out effectively when battery temperature is higher Radiating, prevents battery thermal runaway;Preheated when battery temperature is relatively low, battery is heated up, it is ensured that the charging of battery under low temperature, Discharge performance and security;Reduce the temperature difference in battery pack, prevent the battery life at high temperature location from decaying too fast, to carry Rise battery pack bulk life time.
According to the difference of heat transfer medium, power battery thermal management system can be divided into air hot pipe reason, liquid heat management, with And heat pipe phase change thermal management.Current electric automobile power battery thermal management technology it is main using air hot pipe reason and liquid heat management as Main, phase-change material thermal management technology is also in laboratory stage at present.Natural air-cooling system in air hot pipe reason system is by ring Border temperature influence is big, and electrokinetic cell can only be radiated in the case where outdoor temperature is suitable, it is impossible to realize in cold Weather is preheated to electrokinetic cell, therefore is limited using scope.Needed using the air hot pipe reason system of mounted air conditioner system Carry out integrated with whole-vehicle air-conditioner system, it is necessary to arrange refrigerant tubing and cooling water pipeline, and also need to design air channel, use Cold air carries out Homogeneouslly-radiating to electrokinetic cell, and air-conditioning unit needs to occupy very big space;Therefore air-conditioner wind is cold and hot manages system Space-consuming of uniting is big, and specific volume energy density is small, and specific volume energy density herein refers to battery gross energy and the ratio of volume Value(kWh/m3).Meanwhile, air hot pipe reason system also exist battery case internal temperature uniformity be not easily controlled, battery case sealing The poor shortcoming of difficult design, dustproof and waterproof effect.The design of liquid heat management system is complicated, needs also exist for arranging the cold pipeline of liquid, Pipe arrangement is complicated, high cost;And increase water pump and water tank are also needed to, water tank space-consuming is larger.And direct contact type liquid Body heat management system use the usual ratio of viscosities of iknsulating liquid is larger, flow velocity is not high, so as to limit its heat transfer effect;And it is indirect Although the high still poor insulativity of liquid medium thermal conductivity that contact liquid heat management system is used, once occur in the dead of night send out The risk of raw short circuit.
The content of the invention
The utility model is for the presence of existing electric automobile power battery heat management system in battery case internal temperature Uniformity is not easily controlled or be easily short-circuited risk problem, and there is provided a kind of electrokinetic cell heat based on semiconductor chilling plate Management system.
To achieve the above object, technical solution of the present utility model is:A kind of power based on semiconductor chilling plate Battery thermal management system, including Battery case, also include semiconductor chilling plate, and the two sides of the semiconductor chilling plate is respectively Cold end and hot junction, one side and the Battery case of semiconductor chilling plate fit, and the another side of semiconductor chilling plate is fitted with radiating Plate.
Heat-conducting silicone grease is painted with described semiconductor chilling plate two sides.
The Battery case surface fitted with semiconductor chilling plate two sides and radiating plate surface are finished, and put down it Face degree is not more than 0.03mm.
Described semiconductor chilling plate is arranged in battery case body sidewall, or is arranged in Battery case bottom surface..
Compared with prior art, the beneficial effects of the utility model are:
The one side of semiconductor chilling plate fits with battery case body sidewall in the utility model, semiconductor chilling plate it is another Face is fitted with heat sink;The two sides of semiconductor chilling plate is respectively cold end and hot junction, is realized using semiconductor chilling plate to power The heat management function of battery.Compared with the cold and hot management system of existing air-conditioner wind and the cold and hot management system of liquid, semiconductor chilling plate Small volume is taken, and semiconductor chilling plate one side fits with battery case body sidewall, it is not necessary to pipeline is arranged, it is simple in construction;Cause This its can reduce the complexity of power battery thermal management system, reduce system cost, improve the security reliability of system operation, The energy density of electrokinetic cell bag is improved, reduces the volume of electrokinetic cell bag, the competitiveness of product is lifted.
Brief description of the drawings
Fig. 1 is the utility model structure chart.
Fig. 2 is semiconductor chilling plate schematic diagram in the utility model.
Fig. 3 is semiconductor chilling plate structure chart in the utility model.
In figure, battery tank shell 1, thermal insulation board 2, semiconductor chilling plate 3, heat sink 4, fixed plate 6, power battery pack 5, BMS7, dc source 8, insulating ceramic film 9, metallic conductor 10.
Embodiment
The utility model is described in further detail below in conjunction with brief description of the drawings and embodiment.
Referring to Fig. 1 to Fig. 3, a kind of power battery thermal management system based on semiconductor chilling plate, including the He of Battery case 1 Semiconductor chilling plate 3.The one side of the semiconductor chilling plate 3 fits with Battery case 1, the another side of semiconductor chilling plate 3 It is fitted with heat sink 4;The two sides of semiconductor chilling plate 3 is respectively cold end and hot junction, by by power supply positive-negative connected, it is possible to realize The cold end of semiconductor chilling plate 3 and the exchange in hot junction.Heat sink 4 accelerates semiconductor chilling plate 3 and the inner air of Battery case 1 Heat exchange, the housing of Battery case 1 can realize the heat exchange of semiconductor chilling plate 3 and extraneous air;And heat sink 4 can expand The heating of semiconductor chilling plate 3 and refrigeration scope, make the internal temperature of Battery case 1 uniformly rise or fall.
Further, the good heat-conducting silicone grease of heat conductivility is painted with the described two sides of semiconductor chilling plate 3, to carry High heat conduction effect, accelerates thermal conduction rate.
Further, the surface of Battery case 1 fitted with the two sides of semiconductor chilling plate 3 and the surface of heat sink 4 are equal Need to be finished, make its flatness no more than 0.03mm;Finishing can reduce thermal contact resistance, improve exchange rate.
Specifically, described semiconductor chilling plate 3 can be arranged in the side wall of Battery case 1, or it is arranged in Battery case 1 Bottom surface.
Referring to Fig. 3, a kind of cooling device that semiconductor chilling plate 3 is made up of semiconductor thermocouple, its size is 30* 30*4mm.Semiconductor thermocouple is made up of N-type semiconductor and P-type semiconductor, and N-type semiconductor has unnecessary electronics, has subzero temperature poor Potential;P-type semiconductor electron deficiency, there is positive thermoelectric force.When electronics passes through node to N-type semiconductor from P-type semiconductor, knot The temperature reduction of point;On the contrary, when electronics flow to P-type semiconductor from N-type semiconductor, the temperature of node will be raised;Therefore, connect After upper dc source 8, the transfer of the temperature difference and heat will be produced in joint.Joint in upper end, the sense of current is from N-type Semiconductor is to P-type semiconductor temperature drop and absorbs heat, here it is cold end;And in the joint of lower end, the sense of current is from p-type Semiconductor rises and heat release to N-type semiconductor temperature, therefore is hot junction;If the reversal connection of dc source 8, hot junction and cold end are just It can exchange.This characteristic of semiconductor chilling plate 3 is utilized in the utility model, by by the one side of semiconductor chilling plate 3 and electricity Pond casing 1, which fits, to be made it possible to make heat exchange with external environment condition, and the heat sink 4 of the another side of semiconductor chilling plate 3 laminating can With making heat exchange inside Battery case 1;By the way that the power supply of semiconductor chilling plate 3 is just being connect or reversal connection, it is possible to realize to dynamic The radiating of power battery and preheating function.
Referring to Fig. 1, Battery case 1 makes processing, the external coating insulated paint of Battery case 1 using sheet metal component;Fixed plate 6 is used It is fixed in power battery pack 5, the surface of fixed plate 6 needs to paste thermal insulation board 2, power battery pack 5 and BMS7 is isolated, with Reduce heat management space, improve the heat management efficiency of electrokinetic cell 5.In order to accelerate the thermal conduction rate of power battery pack 5, make Battery cell in power battery pack 5 can Homogeneouslly-radiating or preheating, fan can also be installed additional in fixed plate 6, accelerate battery The flowing of the inner air of casing 1, to accelerate the heat exchange of power battery pack 5 and the inner air of Battery case 1.In Battery case 1 Surface is required for pasting thermal insulation board 2, to reduce the heat exchange between the inside of Battery case 1 and external environment condition, improves heat management system The operating efficiency of system.The quantity and power of semiconductor chilling plate 3 should be according to the heat radiation powers and heating power meter of power battery pack 5 Obtain, and semiconductor chilling plate 3 two or more pieces of can be superimposed and use, to improve its operating efficiency;Semiconductor chilling plate 3 Hot-side heat dissipation can use a variety of radiating modes, can carry out reasonable selection according to heat radiation power.Must be on thermal insulation board 2 before installation The installation site of semiconductor chilling plate 3 is reserved, the corresponding surface of Battery case 1 of reserved location should be finished, and make its table Facial plane degree is not more than 0.03mm;The surface that heat sink 4 is contacted with semiconductor chilling plate 3 will also be finished, and its surface is put down Face degree is not more than 0.03mm.Semiconductor chilling plate 3 is fitted with the inner surface of Battery case 1 during installation;Semiconductor chilling plate 3 can be with The side wall of Battery case 1 is arranged in, the bottom of Battery case 1 can also be arranged in;When semiconductor chilling plate 3 is arranged on battery case During the bottom of body 1, it is possible to use heat sink is directly contacted with battery bottom, to accelerate the speed of heat transfer.Ordinary circumstance lower half Conductor cooling piece 3 is symmetrically fitted in the both sides of Battery case 1 so that power battery pack 5 being capable of Homogeneouslly-radiating or preheating;Battery case When the thickness for the thickness ratio semiconductor chilling plate 3 of thermal insulation board 2 that 1 both sides inner surface is pasted is big, in semiconductor chilling plate 3 and battery case One block of aluminium sheet of increase, can accelerate the speed of heat transfer in the middle of the inner surface of body 1.The installation method of semiconductor chilling plate 3 includes weldering Connect, bond and bolt compresses are fixed.
Referring to Fig. 1, the utility model realizes the heat management function to electrokinetic cell using semiconductor chilling plate 3.In the winter time When temperature is relatively low(Less than 0 DEG C), it is necessary to carry out heating and thermal insulation to electrokinetic cell, correct side is passed to semiconductor chilling plate 3 first To electric current, it is the face fitted with heat sink 4 to make the hot junction of semiconductor chilling plate 3;The heat that the hot junction of semiconductor chilling plate 3 is produced leads to Cross heat sink 4 quickly to conduct to the inner side of whole Battery case 1, then do heat exchange with the air inside Battery case 1, make electricity Air themperature in pond casing 1 will not decline, so as to realize the insulation effect to electrokinetic cell.When summer temp is higher(35 More than DEG C), it is necessary to be radiated to electrokinetic cell, first by the reverse power connection of semiconductor chilling plate 3, make semiconductor chilling plate 3 Hot junction be the face that is fitted with Battery case 1, then the cold end of semiconductor chilling plate 3 absorbs the heat produced during electrokinetic cell work The heat that amount and the extraneous air of Battery case 1 are produced with its internal heat exchange, heat sink 4 can be with accelerated semiconductor cooling piece 3 Absorb the speed of heat;The heat that the hot junction of semiconductor chilling plate 3 is produced then needs to do hot friendship by Battery case 1 and extraneous air Tape swapping is walked.Therefore, the utility model is overcome inside the battery case that existing electric automobile power battery heat management system is present Temperature homogeneity be not easily controlled or the risk that is easily short-circuited defect, improve the competitiveness of product.
Above content is to combine specific preferred embodiment further detailed description of the utility model, it is impossible to Assert that specific implementation of the present utility model is confined to these explanations.For the ordinary skill of the utility model art For personnel, without departing from the concept of the premise utility, some simple deduction or replace, said structure can also be made Protection domain of the present utility model should be all considered as belonging to.

Claims (4)

1. a kind of power battery thermal management system based on semiconductor chilling plate, including Battery case(1), it is characterised in that:Also Include semiconductor chilling plate(3), the semiconductor chilling plate(3)Two sides be respectively cold end and hot junction, semiconductor chilling plate (3)One side and Battery case(1)Fit, semiconductor chilling plate(3)Another side be fitted with heat sink(4).
2. a kind of power battery thermal management system based on semiconductor chilling plate according to claim 1, it is characterised in that: Described semiconductor chilling plate(3)Heat-conducting silicone grease is painted with two sides.
3. a kind of power battery thermal management system based on semiconductor chilling plate according to claim 1, it is characterised in that: Described and semiconductor chilling plate(3)The Battery case that two sides fits(1)Surface and heat sink(4)Surface is finished, and makes it Flatness is not more than 0.03mm.
4. a kind of power battery thermal management system based on semiconductor chilling plate according to claim 1, it is characterised in that: Described semiconductor chilling plate(3)It is arranged in Battery case(1)Side wall, or it is arranged in Battery case(1)Bottom surface.
CN201621336073.9U 2016-12-07 2016-12-07 A kind of power battery thermal management system based on semiconductor chilling plate Active CN206322817U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201621336073.9U CN206322817U (en) 2016-12-07 2016-12-07 A kind of power battery thermal management system based on semiconductor chilling plate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201621336073.9U CN206322817U (en) 2016-12-07 2016-12-07 A kind of power battery thermal management system based on semiconductor chilling plate

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109256603A (en) * 2018-08-07 2019-01-22 北京长城华冠汽车科技股份有限公司 A kind of heat management system and thermal management algorithm of the chargeable energy-storage system of small size
CN111244571A (en) * 2020-01-19 2020-06-05 浙江大学 Square lithium battery pack thermal management structure and method thereof

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109256603A (en) * 2018-08-07 2019-01-22 北京长城华冠汽车科技股份有限公司 A kind of heat management system and thermal management algorithm of the chargeable energy-storage system of small size
CN109256603B (en) * 2018-08-07 2020-08-25 北京长城华冠汽车科技股份有限公司 Thermal management system and thermal management method of small vehicle-mounted rechargeable energy storage system
CN111244571A (en) * 2020-01-19 2020-06-05 浙江大学 Square lithium battery pack thermal management structure and method thereof

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