CN106058364A - Lithium battery power assembly cooling system - Google Patents

Lithium battery power assembly cooling system Download PDF

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Publication number
CN106058364A
CN106058364A CN201610308491.5A CN201610308491A CN106058364A CN 106058364 A CN106058364 A CN 106058364A CN 201610308491 A CN201610308491 A CN 201610308491A CN 106058364 A CN106058364 A CN 106058364A
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CN
China
Prior art keywords
cooling system
liquid
power assembly
drain
housing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
CN201610308491.5A
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Chinese (zh)
Inventor
陈华锋
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Jinan Lufangzhihe Information Technology Co Ltd
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Jinan Lufangzhihe Information Technology Co Ltd
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Priority to CN201610308491.5A priority Critical patent/CN106058364A/en
Publication of CN106058364A publication Critical patent/CN106058364A/en
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/61—Types of temperature control
    • H01M10/613—Cooling or keeping cold
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/61—Types of temperature control
    • H01M10/617—Types of temperature control for achieving uniformity or desired distribution of temperature
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
    • H01M10/625—Vehicles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
    • H01M10/6567—Liquids
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
    • H01M10/6567—Liquids
    • H01M10/6568—Liquids characterised by flow circuits, e.g. loops, located externally to the cells or cell casings
    • 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

Abstract

The invention discloses a lithium battery power assembly cooling system, which is used for solving the problem of a temperature rise of an existing battery pack. The lithium battery power assembly cooling system comprises a lithium battery pack, a liquid pump, a radiator and a liquid transfer pipe, wherein the lithium battery pack comprises battery cells, average-temperature assemblies and a shell; the battery cells and the average-temperature assemblies are mutually laminated at intervals; each average-temperature assembly comprises a left shell, a right shell, a liquid guide sheet, a liquid inlet pipe and liquid outlet pipes; each left shell and the corresponding right shell are of a symmetrical structure; an internal chamber of each liquid guide sheet is a cooling liquid channel; the edge of each liquid guide sheet is embedded into a joint between the corresponding left shell and right shell; average-temperature fields are formed between two sides of each liquid guide sheet and the corresponding left shell and right shell respectively; a center hole and spiral liquid distribution slots are arranged in two side surfaces of each liquid guide sheet; and the shell is connected with each liquid guide sheet through four liquid outlet pipes and one liquid inlet pipe to form a cooling medium flow channel. According to the lithium battery power assembly cooling system, the flow rate of a cooling medium in each average-temperature assembly can be controlled to achieve the target of controlling the internal temperature of each battery cell.

Description

Lithium electric power assembly cooling system
Technical field
This invention relates to new forms of energy lithium electric power assembly cooling system technical field, and specifically a kind of temperature control effect is more Good lithium electric power assembly cooling system.
Background technology
Lithium battery is the core component of electric automobile, and the height of its performance directly affects the quality of electric automobile performance, its The general volume of middle lithium battery is relatively big, occupies the position, chassis at vehicle, and its radiating effect is very poor.
Present battery of the most more making great efforts typically uses natural cooling, air-cooled or water-cooled mode to carry out, and with lithium battery is Example, its internal optimal discharge and recharge temperature is not above 140 DEG C, and external temperature, not above 80 DEG C, otherwise will reduce battery Service life and discharge and recharge effect.
Wherein, three kinds of each have their own advantages of radiating mode, natural cooling is low due to cooling effectiveness, is progressively eliminated, air-cooled Simple in construction, is the current market mainstream, and water-cooled is complicated due to structure, but its cooling effectiveness and controllability are the highest, mesh Front application is less, it has been found that battery is forced cold by the recirculated water that current water-cooled typically all uses big flow But, or carrying out forcing cooling to the housing of battery bag, in this course, cooling water completes often in all battery One systemic circulation, during this, as a example by 100 pieces of battery, the temperature-difference of the cooling medium at cooling beginning and end More than tens degree so that in battery bag, the temperature of different parts is extremely the most unbalanced, this phenomenon can cause be one another in series, in parallel Battery between appearance individual variation, and then the performance that impact is overall.
Further, since existing cooling duct design be all simple sandwich design, cooling medium flowing during, Can not accomplish cold medium acts directly on the application point needing cooling, create a further reduction the cooling effect to cooling point Really, namely cooling-down effect is not ideal enough.
Summary of the invention
In order to solve the deficiencies in the prior art, the present invention provides a kind of lithium electric power assembly cooling system, electronic for lithium The temperature control of power assembly cooling system, especially lowers the temperature to its major surfaces, solves due to lithium electric power assembly cooling system Heat up bring service life reduction, the problem such as blast.
The technical solution adopted for the present invention to solve the technical problems is:
Lithium electric power assembly cooling system, including lithium battery bag, liquid pump, radiator and liquid transmission pipeline, wherein, described Lithium battery bag includes that battery, samming assembly and housing, described battery and samming assembly are spaced superposition and are contained in housing It is internal, it is characterised in that
Described samming assembly includes left shell, right shell body, drain sheet and feed tube, drain pipe, and wherein, left and right housing is Symmetrical structure, and form, by welding, the housing that an inside is airtight, welded seam is launched continuously along the surrounding edge of housing, Wherein, described left shell, right shell body are stainless steel stamping parts, and are designed as outer male structure laterally, and on lateral surface Be provided with one for the groove blocking battery, and be to return for installing drain pipe corner at the four of left and right housing Discharge orifice, a pair of crown center is the pilot hole installing feed tube；
Described drain sheet internal chamber is cooling passage, the gap of described cooling passage 2 millimeters to 3 millimeters it Between, the convex shape that described drain sheet generally surrounding seals, and the prominence on top is provided with inlet, inlet is set to Installing the circular hole of feed tube, the edge of described drain sheet is embedded in the seam of left and right housing, and in the surrounding setting of drain sheet Having polyethylene glue groove to form glue-line, described drain sheet both sides respectively and form samming field, between described samming field between left and right housing Away between 6 to 9 millimeters；
The two sides, middle part of drain sheet are respectively arranged with centre bore and the spiral cloth liquid bath hole of symmetry, wherein, described Spiral cloth liquid bath hole screw arrangement centered by centre bore, described spiral cloth liquid bath hole is arc shaped slits, and the introversion certainly in gap Outer for being gradually increased, described spiral cloth liquid bath hole be obliquely installed and incline direction be to incline to drain pipe direction from centre bore Tiltedly arrange；
Surrounding on described drain sheet is provided with the through hole that return port described with on housing is corresponding, described through hole and cooling Liquid passage is non-penetrating；
Two outsides of described drain sheet are respectively arranged with the first partition muscle of four arcs, and four first are cut off muscle by drain The appearance of sheet is divided into upper left (A1), lower-left (A2), upper right (A3), bottom right (A4) four regions, and wherein first cuts off projection Highly occupying 1/3rd of gap, samming field, and the corresponding return port in each region, the inner surface at left and right housing sets Being equipped with the second partition projection, described second cuts off projection is arranged in pairs with the first partition projection one_to_one corresponding, and described second cuts off The height of projection occupies 1/3rd of the gap of samming field, and described first cuts off projection and second cuts off projection jointly by samming Field is divided into four regions；
Four second cut off projections the positions that cross be provided with a shunting disk, shunting disk be an overshooting shape and with institute State centre bore to be correspondingly arranged, cut off in each two second and be provided with breach on the shunting disk between projection；
Described housing and drain sheet are attached by four drain pipes and a feed tube, and at feed tube and drain pipe Sealing ring is used to seal with housing, drain sheet contact site, one section of setting in feed tube is inserted into drain sheet cavity Having inlet opening, one section in drain pipe is inserted into drain sheet cavity is provided with liquid outlet.
Described feed tube is connected liquid pump and radiator with drain pipe outer circulation.
Described radiator includes heat exchanger tube, flexible pipe and collection QI KOU, by hose connection between described heat exchanger tube and collection QI KOU, Wherein, described heat exchanger tube is sheet metal weldment, and heat exchanger tube is the most oval, and centre is gas channel, including inwall, outward Wall, front apron, backboard, front homogenizing plate, rear homogenizing plate and pipe joint, wherein, inwall, outer wall, front apron, backboard weld each other Forming a ring-type interlayer after connecing, described front homogenizing plate and rear homogenizing plate are separately positioned on the forward and backward two ends of toroidal cavity, will Interlayer is divided into front current-sharing chamber, middle cooling chamber and rear back cavity, is wherein respectively arranged with some circular holes on forward and backward homogenizing plate, And use some dividing plates to be divided into multiple sub-cavity being set parallel to each other in middle cooling chamber；Outside front and back's current-sharing chamber It is respectively arranged with two pipe joints on wall, then is connected with liquid inlet and outlet pipe by flexible pipe.
The described QI KOU that integrates, as bell mouth shape, is arranged at the air-inlet grille of automobile.
Further, the width at the narrowest place, described spiral cloth liquid bath hole is at 1 millimeter, and the width of the widest part is at 3 millimeters.
Further, in described samming assembly, the cooling medium composition of perfusion is by the 150N tri-that mass ratio is 95-99% Class base oil, the diphenol propane of 1.0-5.0%, 0.005% methyl-silicone oil or methyl-silicone oil ester, 0.05% tricresol phosphate Ester, 0.1% sulfurized polyisobutylene, demulsifier T1001 or LZ5957 of 100PPM, and the succinate sulfonic acid of 0.2-0.3% Salt forms.
Further, the electrode of described battery is positioned at laterally.
Further, described drain sheet is engineering plastics moulding.
The invention has the beneficial effects as follows:
The setting of samming assembly, can take away the heat that battery produces, it is possible to be situated between the cooling in samming assembly The flowing velocity of matter is controlled by, and reaches to control the purpose of battery internal temperature.
Low cost of manufacture, good reliability, the housing that wherein outside is combined with battery uses sheet metal part, heat conductivility Well, and carrying out Pressure Welding connection at periphery, and coordinate the sealant sealing of drain sheet surrounding, form obturation effect, mode is cold But medium zero leakage.
Housing itself has certain elasticity, and combines the space of samming field, can meet between battery and expand with heat and contract with cold Requirement.
The existence of samming field, the especially existence in spiral cloth liquid bath hole make cooling medium to be distributed more uniformly And acting directly in inner walls so that thermo parameters method is more uniform, improves cooling-down effect.
Accompanying drawing explanation
Fig. 1 is the schematic diagram (front) of the present invention.
Fig. 2 is the schematic diagram (side) of the present invention.
Fig. 3 is the sectional view of the present invention.
Fig. 4 is the tightening state schematic diagram of the present invention.
Fig. 5 is the axonometric chart of left shell (right shell body).
Fig. 6 is the structure of Fig. 5.
Fig. 7 is the axonometric chart of drain sheet.
Fig. 8 is the axonometric chart of sealing ring.
Fig. 9 is the partial enlarged drawing of the present invention.
Figure 10 is the schematic diagram of air bag.
Figure 11 is the battery heat removal system in new forms of energy car.
Figure 12 is the axonometric chart of radiator.
Figure 13 is the structure chart of heat exchanger.
Figure 14 is the annexation figure of the present invention.
Figure 15 is the axonometric chart of heat exchanger tube.
Figure 16 is the sectional view of heat exchanger tube.
In figure: 1 battery, 2 samming assemblies, 21 left shells, 211 outer male structure, 212 grooves, 22 right shell bodies, 221 weld seams, 222 perforation, 23 drain sheets, 231 cooling passages, 232 inlets, 233 polyethylene glue grooves, 234 centre bores, 235 spiral cloth liquid Slotted eye, 236 through holes, 24 feed tubes, 25 drain pipes, 3 samming fields, 41 first sealing rings, 42 second sealing rings, 4 safe pressure accumulations are let out Pressure device, 5 radiators, 51 heat exchanger tubes, 511 inwalls, 512 outer walls, 513 front aprons, 514 backboards, homogenizing plate before 515,5151 Circular hole, homogenizing plate after 516,517 pipe joints, 518 dividing plates, 52 flexible pipes, 53 collection QI KOU, current-sharing chamber before 54, cooling chamber in 55, after 56 Back cavity, 7 liquid pumps, 10 metal shells.
Detailed description of the invention
As shown in Figure 1 to 11, battery is cooled down by, coolant poor for lithium electric power assembly cooling system even temperature effect The defects such as uneven and cooling system structure is complicated, the protection main body of the present invention is as follows:
Exploitation is a kind of lithium electric power assembly cooling system with even temperature effect, so that lithium electric power assembly dissipates Hot systems is maintained within the scope of basicly stable temperature, and by undulated control in the range of reasonably.
The lithium electric power assembly cooling system structure that the present invention provides simultaneously is as follows:
Lithium electric power assembly cooling system, including lithium battery bag, liquid pump, radiator and liquid transmission pipeline, radiator is used In being dissipated by internal heat, wherein, described lithium battery bag includes battery 1, samming assembly 2 and shell, wherein battery 1 For tabular, such as lithium battery core, the electrode of battery therein is integrated in side, be typically designed as tabular or Bulk, and be provided with electrode thereon, according to position arrangement, below emphasis samming assembly is carried out detailed analysis.Due to this The emphasis of invention does not lies in the improvement of battery, therefore no details will be provided to the structure of battery.
Lithium battery is adding up due to internal temperature in charge and discharge process, has bigger temperature rise phenomenon, especially During the Accelerating Traveling of Automobiles, can form bigger intensification especially, the phenomenon of this intensification can be cashed outside as battery The slightly increase of volume, the expansion of housing, tested by thermometer, temperature can rise to 100 degree even more than, this liter Temperature can cause the service life reduction of lithium electric power assembly cooling system, affects its security performance, such as spontaneous combustion further.
Embodiment one, during making samming assembly 2, needs deformation, the expansion causing battery 1 temperature-rise period Consider, and comprehensively utilize its deformation, reach effectively to control the process purpose that temperature heats up.
Samming assembly 2 includes left shell 21, right shell body 22, drain sheet 23 and feed tube 24, drain pipe 25, wherein, left and right Housing is symmetrical structure, and by fastening and the welded molding of surrounding, forms a complete housing, as a example by left shell 21 Being described in detail, left shell 21 uses the sheet stamping of stainless steel to form, and is designed as outer male structure 211 laterally, For coordinating with drain sheet, with reference to Fig. 5, and be provided with on lateral surface one for the groove 212 blocking battery, at housing Outside self-contained battery core, the electrode of described battery is positioned at laterally, two-by-two left and right housing fasten after by the way of Pressure Welding Welding forms one, and wherein weld seam 221 launches along the surrounding edge of housing, and forms five on left and right housing to perforation 222, be wherein positioned at four pairs of corners for four return ports, a pair of crown center is pilot hole, neutralizes for assembly technology Feed tube coordinates, and is respectively used to install feed tube and drain pipe.
Drain sheet 23, uses engineering plastics moulding, wherein has an inner chamber, and for cooling passage 231, above-mentioned is cold But between the clearance control of liquid passage 231 2 to 3 millimeters, drain sheet 23 generally convex shape, surrounding carries out edge sealing, and on top Prominence be provided with inlet 232, inlet is set to circular hole, is used for installing feed tube, and utilizes sealing ring to carry out leakproof Process, it is noted that leak free design herein requires relatively low, is not absolute leakproof, use General Purpose Rubber packing ring.
The edge that above-mentioned drain sheet 23 surrounding is formed after just merging with above-mentioned left and right housing overlaps, and is formed and coincide, And the surrounding of drain sheet is provided with polyethylene glue groove 233, in above-mentioned polyethylene glue groove, it is pre-charged with polyethylene glue, at dress During joining, by the way of heating, polyethylene glue being melted, and form glue-line, the edge of drain sheet 23 is embedded in left and right In the seam of housing, the seam of left and right housing can be sealed from interior survey by the way of heating, form preferable sealing effectiveness, Place liquid leakage.By above-mentioned sealant sealing and Pressure Welding double sealing, it is ensured that the leakage of junction circumference is general Rate less than ten thousand/, it is ensured that the use safety of battery component.
Drain sheet 23 both sides respectively and form samming field 3 between left and right housing, samming field herein is in spatial shape One slight thin seam, and samming field 3 spacing between drain sheet and left and right housing control between 6 to 9 millimeters, be namely About 3 times of cooling passage.
Meanwhile, the existence of samming field, it is also possible that external shell has certain extendable room, can make up battery Space requirement under thermal expansion condition.
The two sides, middle part of drain sheet 23 are respectively arranged with centre bore 234 and the spiral cloth liquid bath hole 235 of symmetry, ginseng Examining Fig. 1 and Fig. 7, wherein centre bore 234 diameter is narrow gap in 10 millimeter, spiral cloth liquid bath hole 235, and gap from Interior outwards for be gradually increased, the width H1 at the narrowest place is in 1 millimeter, and the width H2 of the widest part is in 3 millimeter, and is to incline Tiltedly arrange, be obliquely installed to drain pipe direction from centre bore.
Surrounding on above-mentioned drain sheet is provided with the through hole 236 corresponding with on housing four perforation, for pilot hole, This through hole 236 is not through with above-mentioned cooling passage 231, is independent, is used only for assembling.
23 two outsides of above-mentioned drain sheet are respectively arranged with four first and cut off muscle 237, become spiral protrusion shape, and being used for will The appearance of drain sheet is divided into upper left A1, lower-left A2, upper right A3, tetra-regions of bottom right A4, the wherein height of the first partition projection 237 Degree occupies about 1/3rd of gap, samming field 3, and the corresponding return port in each region, refluxes more uniform.
The corresponding inner surface at left and right housing is provided with the second partition projection 238, and this projection cuts off projection with first 238 move towards is identical, and one_to_one corresponding is arranged in pairs, second cut off projection height occupy samming field 3 gap three/ About one, the first partition projection and second is cut off projection and is jointly said that above-mentioned samming field is divided into four regions, can effectively control Cooling medium route processed, improves external hull surface cooling nearby and flow rate, improves cooling effect.
Four second positions that cross cutting off projection are provided with a shunting disk 239, and shunting disk is an overshooting shape, circle Shape, cut off in each two second and on the shunting disk between projection, be provided with breach 2391, for guiding the direction of shunting.
Above-mentioned housing and drain sheet are attached by four drain pipes 25 and a feed tube 24, and at feed tube with go out Liquid pipe uses sealing ring to seal with housing, drain sheet contact site, and wherein, sealing ring includes the first sealing ring 41 and second Sealing ring 42, is arranged in the first sealing ring 41 between housing and the liquid inlet and outlet pipe in outside, and the second sealing ring 42 is arranged on drain Between sheet and liquid inlet and outlet pipe, and a section in feed tube is inserted into drain sheet cavity is provided with inlet opening, inserts at drain pipe 25 One section entered in drain sheet cavity is provided with liquid outlet, and coolant is at feed tube, drain sheet inner chamber, spiral cloth liquid bath, samming The heat of battery is taken away after circulating by field and drain pipe, forms cooling, and in the process, coolant is in spiral cloth liquid bath hole Under the control of the trend of 235, coolant presents spiral helicine flowing, forms disturbance, and takes away surface heat, solves existing cold But the problem of coolant idle loop in mode, improves cooling effect, owing to spiral cloth liquid bath hole 235 is substantially covered on drain sheet 23 Front and back, housing to outside can carry out direct-injection simultaneously, cold coolant acts directly on the left and right housing in outside On inwall so that housing is directly lowered the temperature, and then drive battery fast cooling so that coolant samming formed here field, keep away Exempt from the problem that coolant inhomogeneous cooling during cooling down battery is even.Improve cooling effect and efficiency.
Above-mentioned battery and samming assembly are spaced superposition, are finally arranged in a metal shell, the most above-mentioned Metal shell be ganoid metal shell 10, formed one, the namely lithium electric power assembly alleged by the present invention.
Feed tube 24 uses liquid pump and radiating mode with drain pipe 25 outer circulation, and wherein liquid pump 7 uses Miniature liquid pump, heat radiation The radiator 5 carried with automobile connects, and utilizes automobile radiators to be dissipated by heat, with reference to Figure 10.
Referring to figs. 12 to Figure 16, above-mentioned radiator 5, including heat exchanger tube 51, flexible pipe 52 and collection QI KOU 53, wherein heat exchanger tube For thin sheet metal weldment, the most oval at heat exchanger tube 51, centre is gas channel 57, including inwall 511, outer wall 512, front apron 513, backboard 514, front homogenizing plate 515, rear homogenizing plate 516 and pipe joint 517, wherein, inwall, outer wall, front Baffle plate, backboard form a ring-type interlayer after being welded to one another, and front homogenizing plate 515 and rear homogenizing plate 516 are separately positioned on ring Two ends before and after the cavity of shape, are divided into front current-sharing chamber 54, middle cooling chamber 55 and rear back cavity 56, wherein forward and backward by interlayer It is respectively arranged with some circular holes 5151 on homogenizing plate, for the mean allocation of cooling medium, and uses some in middle cooling chamber Dividing plate 518 is divided into multiple sub-cavity being set parallel to each other so that coolant is circulated by this passage.
It is respectively arranged with two pipe joints 517 front and back on the outer wall in current-sharing chamber, then is carried out with liquid inlet and outlet pipe by flexible pipe Directly or indirectly connect.
For alleviating the weight of cooling medium, it is less, such as that the clearance D of the above-mentioned interlayer between inside and outside wall is typically designed 1 centimetre, logical too small amount of cooling medium carries out Rapid Circulation, just be enough to take away the heat of inside battery, to this end, be situated between in cooling The cooling line of matter is provided with micropump and carries out frequency conversion drive, control the flow velocity of cooling medium.
Integrate QI KOU 53 as bell mouth shape, be arranged at the air-inlet grille of automobile, for airflow inlet, in the process of running car In, form afflux effect, carry out heat exchange by inwall between air-flow and coolant, by air-flow, the coolant in interlayer is entered Row cooling.
For ensureing the security performance of system, being provided with a safe pressure accumulation pressure relief device 4 in outer circulation, this device is one Individual pressure accumulation air bag, has self-relieving function under extraneous extreme shock, reduces the pressure itself of coolant, safer.
Safe pressure accumulation pressure relief device 4 structure is as follows: includes that air bag, air bag are arranged in return line, i.e. enters with flowline Row connects, and air bag is arranged on vehicle front, and it is fixing to carry out binding by flexible-belts such as rubber strips, forms a kind of flexible peace Dress, is provided with a relief valve in the positive upside of air bag,
Above-mentioned cooling liquid uses low viscosity miscella, has explosion-proof effect, and its composition includes: be 95-by mass ratio The 150N tri-class base oil of 99%, the diphenol propane of 1.0-5.0%, 0.005% methyl-silicone oil or methyl-silicone oil ester, 0.05% Tricresyl phosphate, 0.1% sulfurized polyisobutylene, demulsifier T1001 or LZ5957 of 100PPM, and the amber of 0.2-0.3% Amber acid ester sulfonates forms, and this special miscella has good high-temperature stability, has explosion-proof performance, it is possible to meet lithium electronic The use requirement in the case of a high temperature of power assembly cooling system, especially can reduce lithium electric power assembly cooling system and dodge quick-fried drawing The danger sent out.
Embodiment described above is only to be described the preferred embodiment of the present invention, the not model to the present invention Enclose and be defined, on the premise of designing spirit without departing from the present invention, the relevant technical staff in the field's various changes to the present invention Shape and improvement, all should expand in protection domain as determined by claims of the present invention.

Claims (10)

1. lithium electric power assembly cooling system, including lithium battery bag, liquid pump, radiator and liquid transmission pipeline, wherein, described lithium Battery bag includes that battery (1), samming assembly (2) and housing, described battery and samming assembly are spaced superposition and are contained in Inside metal shell, it is characterised in that
Described samming assembly (2) includes left shell (21), right shell body (22), drain sheet (23) and feed tube (24), drain pipe (25), wherein, left and right housing is symmetrical structure, and forms the housing that an inside is airtight, described welded seam by welding (221) the surrounding edge continuously along housing is launched, wherein, in four pairs of corners of left and right housing for being used for installing drain pipe Return port, a pair of crown center be install feed tube pilot hole；
Described drain sheet (23) internal chamber is cooling passage (231), and it is convex that described drain sheet (23) generally surrounding seals Font, and inlet (232) it is provided with in the prominence on top, the edge of described drain sheet (23) is embedded in left and right housing In seam, described drain sheet (23) both sides respectively and form samming field (3) between left and right housing,
The two sides, middle part of drain sheet (23) are respectively arranged with centre bore (234) and the spiral cloth liquid bath hole (235) of symmetry, Wherein, described spiral cloth liquid bath hole screw arrangement centered by centre bore, described spiral cloth liquid bath hole (235) is arc shaped slits, And gap from inside to outside for being gradually increased, described spiral cloth liquid bath hole be obliquely installed and incline direction be from centre bore It is obliquely installed to drain pipe direction；
Surrounding on described drain sheet is provided with the through hole (236) that return port described with on housing is corresponding, described through hole (236) The most through with cooling passage (231)；
(23) two outsides of described drain sheet are respectively arranged with the first partition muscle (237) of four arcs, and four first are cut off muscle The appearance of drain sheet is divided into upper left (A1), lower-left (A2), upper right (A3), bottom right (A4) four regions, and wherein first cuts off The height of projection (237) occupies 1/3rd of samming field (3) gap, and the corresponding return port in each region, left and right The inner surface of housing is provided with the second partition projection (238), and described second cuts off projection cuts off projection with first (238) 1 a pair Should be arranged in pairs, the described second height cutting off projection occupies 1/3rd of the gap of samming field (3), and described first partition is prominent Rise and samming field is divided into four regions by the second partition projection jointly；
Four second cut off projections the positions that cross be provided with a shunting disk (239), shunting disk be an overshooting shape and with Described centre bore (234) is correspondingly arranged, and cuts off in each two second and is provided with breach (2391) on the shunting disk between projection；
Described housing and drain sheet are attached by four drain pipes (25) and a feed tube (24), and feed tube with go out Liquid pipe uses sealing ring to seal with housing, drain sheet contact site, a section in feed tube is inserted into drain sheet cavity Being provided with inlet opening, one section in drain pipe (25) is inserted into drain sheet cavity is provided with liquid outlet；
Described feed tube (24) is connected liquid pump and radiator with drain pipe (25) outer circulation；Described radiator (5) includes heat exchanger tube (51), flexible pipe (52) and collection QI KOU (53), by flexible pipe (52) connection between described heat exchanger tube (51) and collection QI KOU (53), its In, described heat exchanger tube is sheet metal weldment, and heat exchanger tube (51) is generally oval, and centre is gas channel (57), including Inwall (511), outer wall (512), front apron (513), backboard (514), front homogenizing plate (515), rear homogenizing plate (516) and pipe connect Head (517), wherein, inwall, outer wall, front apron, backboard form a ring-type interlayer, described front homogenizing plate after being welded to one another (515) and rear homogenizing plate (516) is separately positioned on the forward and backward two ends of toroidal cavity, interlayer is divided into front current-sharing chamber (54), in Cooling chamber (55) and rear back cavity (56), be wherein respectively arranged with some circular holes (5151) on forward and backward homogenizing plate, and in cold But chamber use some dividing plates (518) to be divided into multiple sub-cavity being set parallel to each other；Outer wall in front and back's current-sharing chamber On be respectively arranged with two pipe joints (517), then be connected with liquid inlet and outlet pipe by flexible pipe.
Lithium electric power assembly cooling system the most according to claim 1, it is characterised in that described spiral cloth liquid bath hole (235) width (H1) at the narrowest place is at 1 millimeter, and the width (H2) of the widest part is at 3 millimeters.
Lithium electric power assembly cooling system the most according to claim 1, it is characterised in that perfusion in described samming assembly Cooling medium composition is by the 150N tri-class base oil that mass ratio is 95-99%, the diphenol propane of 1.0-5.0%, 0.005% Methyl-silicone oil or methyl-silicone oil ester, 0.05% tricresyl phosphate, 0.1% sulfurized polyisobutylene, the demulsifier T1001 of 100PPM Or LZ5957, and the sulphosuccinates composition of 0.2-0.3%.
Lithium electric power assembly cooling system the most according to claim 1, it is characterised in that the electrode of described battery is positioned at Laterally.
Lithium electric power assembly cooling system the most according to claim 1, it is characterised in that described drain sheet (23) is engineering Plastic injection piece.
Lithium electric power assembly cooling system the most according to claim 1, it is characterised in that the surrounding of described drain sheet is arranged There is polyethylene glue groove (233), and between drain sheet and left and right housing, form melted glue envelope.
Lithium electric power assembly cooling system the most according to claim 1, it is characterised in that the pipeline in outer circulation accesses peace Full pressure accumulation pressure relief device (4).
Lithium electric power assembly cooling system the most according to claim 1, it is characterised in that described cooling passage (231) Gap between 2 millimeters to 3 millimeters, described samming field (3) spacing is between 6 to 9 millimeters.
Lithium electric power assembly cooling system the most according to claim 1, it is characterised in that the described QI KOU (53) that integrates is as loudspeaker Mouth shape, is arranged at the air-inlet grille of automobile.
Lithium electric power assembly cooling system the most according to claim 1, it is characterised in that described left shell (21), right shell Body (22) is stainless steel stamping parts, and is designed as outer male structure (211) laterally, and is provided with a use on lateral surface In the groove (212) blocking battery.
CN201610308491.5A 2016-05-10 2016-05-10 Lithium battery power assembly cooling system Withdrawn CN106058364A (en)

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