CN109768351A - Power battery pack R134a refrigerant is direct-cooled to couple cooling system and control method with heat pipe - Google Patents
Power battery pack R134a refrigerant is direct-cooled to couple cooling system and control method with heat pipe Download PDFInfo
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- CN109768351A CN109768351A CN201910082928.1A CN201910082928A CN109768351A CN 109768351 A CN109768351 A CN 109768351A CN 201910082928 A CN201910082928 A CN 201910082928A CN 109768351 A CN109768351 A CN 109768351A
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- control unit
- electronic control
- revolving speed
- temperature
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- 238000001816 cooling Methods 0.000 title claims abstract description 26
- 239000003507 refrigerant Substances 0.000 title claims abstract description 17
- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000001704 evaporation Methods 0.000 claims abstract description 27
- 230000008020 evaporation Effects 0.000 claims abstract description 24
- 239000002131 composite material Substances 0.000 claims abstract description 3
- 229910052751 metal Inorganic materials 0.000 claims description 35
- 239000002184 metal Substances 0.000 claims description 35
- 239000000178 monomer Substances 0.000 claims description 21
- 230000000694 effects Effects 0.000 claims description 13
- 229920001971 elastomer Polymers 0.000 claims description 9
- 238000011217 control strategy Methods 0.000 claims description 8
- 230000005611 electricity Effects 0.000 claims description 8
- 238000003780 insertion Methods 0.000 claims description 7
- 230000037431 insertion Effects 0.000 claims description 7
- 230000009194 climbing Effects 0.000 claims description 5
- 238000012546 transfer Methods 0.000 claims description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 4
- 230000006835 compression Effects 0.000 claims description 4
- 238000007906 compression Methods 0.000 claims description 4
- 239000004519 grease Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 238000012544 monitoring process Methods 0.000 claims description 4
- 229920001296 polysiloxane Polymers 0.000 claims description 4
- 239000000741 silica gel Substances 0.000 claims description 4
- 229910002027 silica gel Inorganic materials 0.000 claims description 4
- 230000001133 acceleration Effects 0.000 claims description 3
- 239000004411 aluminium Substances 0.000 claims description 2
- 229910052782 aluminium Inorganic materials 0.000 claims description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 2
- 230000010355 oscillation Effects 0.000 claims description 2
- 238000003892 spreading Methods 0.000 claims description 2
- 238000003466 welding Methods 0.000 claims description 2
- 235000006508 Nelumbo nucifera Nutrition 0.000 claims 1
- 240000002853 Nelumbo nucifera Species 0.000 claims 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 claims 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims 1
- 230000008878 coupling Effects 0.000 claims 1
- 238000010168 coupling process Methods 0.000 claims 1
- 238000005859 coupling reaction Methods 0.000 claims 1
- 238000013461 design Methods 0.000 claims 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims 1
- 229910052710 silicon Inorganic materials 0.000 claims 1
- 239000010703 silicon Substances 0.000 claims 1
- 229920002379 silicone rubber Polymers 0.000 claims 1
- 230000007306 turnover Effects 0.000 claims 1
- 238000004078 waterproofing Methods 0.000 claims 1
- 238000005516 engineering process Methods 0.000 abstract description 4
- 210000000582 semen Anatomy 0.000 abstract description 2
- 239000007788 liquid Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 239000002826 coolant Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
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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 present invention proposes a kind of novel direct-cooled and heat pipe combined cooling system of battery pack refrigerant, high efficient heat exchanging is carried out by arranging that Flat heat tube array is directly contacted with battery between battery, heat is transferred to rapidly in the evaporation cold plate set at bottom, it is evaporated by refrigerant therein and carries out high-intensitive rapid cooling, compared with cold form, realize that refrigerant enters the direct evaporation and heat-exchange rapid cooling battery pack of cold plate after expansion valve throttling, compared with existing direct-cooled technology, the direct-cooled technology of composite heat pipe proposed by the present invention can further promote the exchange capability of heat under the harsh operating condition of batteries of electric automobile packet, structural reliability and lightweight are also greatly improved.It proposes to be directed to hot environment and big load operating condition simultaneously, regulate and control rotation speed of fan, compressor rotary speed, electromagnetism valve opening to adjust the heat management system and control method that match battery semen donors under corresponding operating condition, further promotes optimum temperature supportability under the harsh operating condition of batteries of electric automobile packet.
Description
Technical field
The invention belongs to batteries of electric automobile field of heat management, in particular to power battery rapid cooling and thermally safe management
Technology.
Background technique
With booming, the heat pipe of the power battery as wherein critical component of pure electric automobile in new-energy automobile
Reason is gradually more and more paid attention to.In vehicle travel process, power battery electric discharge adjoint can generate amount of heat, so that
The temperature of entire battery pack increases rapidly, will affect battery performance and service life if being effectively treated not in time, even draws when serious
Play the thermally safe accidents such as battery combustion explosion.Therefore, carrying out efficient heat management to power battery is just particularly important.In city
In various heat management modes on face, the forms such as cooling have had Preliminary Applications indirectly by air-cooled, liquid cooling and Chiller.
Air-cooled form is only applicable to the lesser battery pack of heat production since the coefficient of heat transfer is small.Liquid cooling is straight frequently with battery modules
It connects in the heat exchanger plates or pipeline that the heat transfer form infiltrated in coolant liquid or liquid coolant are directly entered between battery and takes away
The form of heat significantly improves although cooling effect is more air-cooled, and there are amount of liquid cooling in system is big, electric for this type of cooling
The pond overweight and coolant liquid of packet, which flows through, easily causes the security hidden troubles such as leakage short circuit inside battery pack.It is existing at present
Although heat that the indirect methods for cooling of Chiller is able to achieve between refrigerant and coolant liquid exchanges, but between refrigerant and battery
It is still the form of indirect heat exchange, this secondary heat exchange low efficiency, effect are poor.Meanwhile the development of power battery material is increasingly
It is fast-developing towards the direction of high-energy density, high heat production and battery group towards large capacity, long continuation of the journey, therefore, in order to ensure that this
Service life and the safety of the optimal thermal management effect of battery pack and battery material under kind developing state, are badly in need of further promoting battery
Group strengthens cooling technology and method.
Summary of the invention
The present invention proposes that a kind of novel power battery pack R134a refrigerant is direct-cooled and couples cooling system and control with heat pipe
Method carries out high efficient heat exchanging by arranging that Flat heat tube array is directly contacted with battery between battery, heat is transferred to rapidly
It in the evaporation cold plate that bottom is set, is evaporated by refrigerant therein and carries out high-intensitive rapid cooling, compared with cooling system, realize refrigeration
Agent enters the effect of the direct evaporation and heat-exchange rapid cooling battery pack of cold plate after expansion valve throttling.Meanwhile it proposing to be directed to high temperature ring
Border operating condition, the big load operating condition such as acceleration, climbing, passes through the master control for regulating and controlling rotation speed of fan, compressor rotary speed, electromagnetism valve opening
The heat management system and control method of battery semen donors under corresponding operating condition are matched because usually adjusting, and further promote electric car electricity
Wrap optimum temperature supportability and heat management system structure reliability and lightweight under harsh operating condition in pond.
Detailed description of the invention
Fig. 1: battery pack entirety schematic three dimensional views and partial enlarged view
Fig. 2: battery pack main view and partial enlarged view
Fig. 3: metal profile structural schematic diagram and partial enlarged view
Fig. 4: diversion structure schematic diagram
Fig. 5: evaporation cold plate structural schematic diagram and partial enlarged view
Fig. 6: evaporation cold plate inner flow passage flow graph
Fig. 7: upper housing, lower case structural schematic diagram and partial enlarged view
Fig. 8: upper housing, lower case, which are harmonious schematic diagram, and shell is harmonious locates cross-sectional view
Fig. 9: cooling system overall schematic
Figure 10: control method flow chart
In Fig. 1-Fig. 9: 1- battery pack, 2- flat hot pipe array, 3- metal profile, 4- current divider, 5- evaporate cold plate, 6-
Upper housing, 7- lower case, 8- monomer bulk battery, 9- heat conductive silica gel gasket, 10- monomer flat hot pipe, 11- heat pipe insertion groove,
12- support plate fixing rib, 13- current divider fixing lug boss, 14- corner element structures, 15- entrance T shape pipe, the outlet 16- T shape pipe, 17- pipe
Hoop, 18- evaporation cold plate inner flow passage flow graph, 19- waterproof rubber ring, 20- current divider reserve bayonet, 21- support plate fixing lug boss,
22- shell fixation hole, 23- battery pack, 24- compressor, 25- condenser, 26- blower, 27- solenoid valve, 28- electronic control are single
Member.
Specific embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings:
As shown in Fig. 1, in the present embodiment, battery pack 23 by battery pack 1, flat hot pipe array 2, metal profile 3,
The components compositions such as current divider 4, evaporation cold plate 5, upper housing 6, lower case 7；It is placed vertically using monomer bulk battery 8, monoblock
The mode that parallel, horizontal is arranged in parallel in metal profile 3 between shape battery 8 forms battery pack 1, battery pack 1 again with other its
His component collectively constitutes battery pack 23；Enter in evaporation cold plate 5 by using refrigerant through 4 structure of current divider and directly evaporate,
By this column 2 of flat hot pipe from obtained in battery pack 1 and be transferred to evaporation cold plate 5 in heat take away, thus realize to entire electricity
The efficient cooling of pond packet 23.
As shown in Fig. 2, in the present embodiment, each of above-mentioned flat hot pipe array 2 monomer flat hot pipe 10
Width is equal to monomer bulk battery 8, and height is slightly above monomer bulk battery 8, and with a thickness of several millimeters, material is aluminium；Flat heat
Pipe array 2 is identical as 1 arrangement of battery pack, and monomer bulk battery 8 and 10 alternate intervals of monomer flat hot pipe are arranged in metal
In support plate 3.It is led between monomer bulk battery 8 and monomer flat hot pipe 10 with identical with 8 side size of monomer bulk battery
Hot silica gel pad 9 is filled, and bradyseism and anti-puncture effect are played.
As shown in Fig. 3, in the present embodiment, there is a large trough by high and low and several in above-mentioned metal profile 3
Lower than the heat pipe insertion groove 11 of large trough, battery pack 1 and flat hot pipe array 2 are just put into rectangular large trough, the insertion of each heat pipe
Slot 11 then can just be placed in a monomer flat hot pipe 10.Whole be put into the large trough for be coated with heat-conducting silicone grease of battery pack 1 is fixed
It blocks, flat hot pipe array 2 is inserted directly into the heat pipe insertion groove 11 of metal profile simultaneously by stretching out the part of rectangular cell
Blind is smeared with heat-conducting silicone grease and reinforces heat transfer effect, and certain bradyseism effect is provided；The left and right sides of metal profile 3
There is the support plate fixing rib 12 for supporting role, extended downwardly to be directly in contact with lower case 7, lower part is avoided to evaporate cold plate
5 directly bear the weight of upper element；Lower cavity size is identical as evaporation 5 size of cold plate.Have at left and right sides of metal profile 3
Several current divider fixing lug boss 13 outstanding are respectively used to the current divider 4 of the support left and right sides, and are bolted using pipe collar 17
Fix current divider 4.There are several corner element structures 14 in 3 front and back side of metal profile, passes through 7 company of being fixed to each other of screw and lower case
It connects
As shown in Fig. 4, in the present embodiment, above-mentioned current divider 4 includes that an inlet diverter 4 and one outlet shunt
Device 5；There are a total mouth and several bifurcations on each current divider 4；Bifurcations respectively with evaporation cold plate 5 on arrival end or
Outlet end is connected by rubber tube；Total mouth of inlet diverter 4 and outlet splitter 4 is connected in lower case 7 by tubing
Current divider reserves bayonet 20.
As shown in attached drawing 5 and attached drawing 6, in the present embodiment, above-mentioned evaporation cold plate 5 is placed on 3 lower part of metal profile sky
It directly contacts in chamber and with metal profile 3, and is consolidated the support plate for having fixation hole at left and right sides of metal profile 3 with screw
The evaporation cold plate 5 for determining rib 12 and corresponding position again with threaded hole is mutually permanently connected；Have in evaporation cold plate 5 and is parallel to each other
Several refrigerant flow paths, inner flow passage uses oblate section, and width is apparently higher than depth of section, and biggish interior surface area is reinforced
Exchange capability of heat and the consistency that more ensure that phase transition temperature, and runner spaced set；Runner inlet and outlet have stretching plate body
A part, the entrance T shape metal tube 15 to be stood upside down between every two runner with one or outlet T shape metal tube 16 and the two streams
Road welding, entrance T shape metal tube 15 or outlet 16 top of T shape metal tube are connected with the bifurcations of current divider 4 with rubber tube.This
Outside, a heat conductive silica gel gasket 9 is arranged in the case where evaporating cold plate 5, the frictional oscillation slowed down between evaporation cold plate 5 and lower case 7 impacts,
Certain heat spreading function is had both simultaneously.
As shown in attached drawing 7 and attached drawing 8, in the present embodiment, the upper housing 6 and lower case 7 of above-mentioned apparatus are all using high-strength
Degree composite material is made；7 bottom inner surface of lower case has for fixing metal profile 3 and evaporating the large trough of cold plate 5；Large trough
Several support plate fixing lug boss 21 with threaded hole are distributed before and after edge, metal profile 3 passes through screw for its front and back side
Corner element structures 14 are mutually permanently connected with support plate fixing lug boss 21；Upper housing 6 is buckled in lower case 7, upper housing 6 and lower case
7 edge all uses Eversible structure, so as to upper housing 6 and lower case 7 be harmonious it is more stable；And the connection that is harmonious is set using waterproof
Meter, 7 edge surface of lower case is dug there are two semicircle conduit, all over the entire shell rim in portion, is equipped in two conduits and conduit half
The identical circular section waterproof rubber ring 19 of diameter has the arc groove of same radius, 6 circular arc of upper housing in 6 corresponding position of upper housing
Less than half circular arc has certain squeezing action to waterproof rubber ring when being harmonious so as to upper housing 6 and lower case 7, imitates waterproof
Fruit is more preferably；There are the shell fixation hole 22 corresponded to each other and for connection in upper housing 6 and 7 edge of lower case, are connected by screw bolts
Make mutually to fasten between shell.
In the present embodiment, the control that power battery pack R134a refrigerant direct current couples cooling system with heat pipe is additionally provided
Method processed, as shown in Fig. 9, the direct-cooled cooling system that couples with heat pipe of power battery pack R134a refrigerant is by battery pack 23, compression
Machine 24, blower 26, condenser 25, solenoid valve 27, electronic control unit 28 collectively constitute.It is sensed by the environment temperature of surface of vehicle
Device differentiates after acquiring ambient temperature signal, that is, signal a through electronic control unit 28 i.e. ECU, is low temperature by environment temperature interval division
Three environment, medium temperature environment, hot environment ranks；Power output signal, that is, signal is acquired by the power sensor of vehicular electric machine
B differentiates through electronic control unit 28, by vehicle form operating condition be divided into it is conventional at the uniform velocity i.e. underload and acceleration with low-speed big i.e.
Two kinds of operating conditions of high load capacity；Electronic control unit is transferred to by temperature sensor temperature collection signal, that is, signal c in battery pack 23
Mean temperature in 28 monitoring battery packs 23.Specific environment temperature and given travel operating condition and battery pack according to locating for vehicle
Mean temperature situation in 23, electronic control unit 28 adopt 27 aperture rank of solenoid valve, 26 revolving speed of blower, 24 revolving speed of compressor
Corresponding control strategy is taken, so that the temperature of entire battery pack 23 is able to maintain that in suitable operating temperature range, guarantees electricity
Pond output performance, while extending battery.
When electronic control unit 28 differentiates that vehicle is in low temperature environment, following control strategy is taken:
A. it when electronic control unit 28 judges driving cycle for running on the lower load, keeps blower 26 and compressor 24 to be in and closes
Closed state simultaneously continues 5s, differentiates vehicle local environment temperature range by electronic control unit 28 again later.
B. electronic control unit 28 judges driving cycle for high load capacity operating condition, and in battery pack 23 at 20 DEG C of < of average temperature,
It keeps blower 26 and compressor 24 to be in close state and continue 5s, ring locating for vehicle is differentiated as electronic control unit 28 again later
Border temperature range.
C. electronic control unit 28 judge driving cycle for high load capacity operating condition, and mean temperature >=30 DEG C in battery pack 23
When, control solenoid valve 27 is minimum aperture, 26 revolving speed of blower is the slow-speed of revolution, 24 revolving speed of compressor is the slow-speed of revolution, if judging after 5s
In battery pack 23 when mean temperature >=20 DEG C, then continuing to keep solenoid valve 27 is minimum aperture, 26 revolving speed of blower is the slow-speed of revolution, pressure
24 revolving speed of contracting machine is the slow-speed of revolution, judges battery pack mean temperature again after 5s, when 20 DEG C of 23 mean temperature < of battery pack again
Vehicle local environment temperature range is differentiated by electronic control unit 28.
When electronic control unit 28 differentiates that vehicle is in medium temperature environment, following control strategy is taken:
A. when electronic control unit 28 judges driving cycle for running on the lower load, and averagely warm in battery pack 23 >=30 DEG C
When, control solenoid valve 27 is middle aperture, 26 revolving speed of blower is deep low gear, 24 revolving speed of compressor is deep low gear, if judging electricity after 5s
In pond packet 23 when mean temperature >=20 DEG C, then continuing holding solenoid valve 27 as middle aperture, 26 revolving speed of blower is deep low gear, compressor
24 revolving speeds are deep low gear, judge battery pack mean temperature again after 5s, again by electricity when 20 DEG C of 23 mean temperature < of battery pack
Sub-control unit 28 differentiates vehicle local environment temperature range.
B. electronic control unit 28 judges driving cycle for running on the lower load, and in battery pack 23 at 30 DEG C of < of average temperature,
It keeps blower 26 and compressor 24 to be in close state and continue 5s, then vehicle local environment temperature is differentiated by electronic control unit 28
Spend section.
C. electronic control unit 28 judge driving cycle for high load capacity operating condition, and mean temperature >=30 DEG C in battery pack 23
When, control solenoid valve 27 is middle aperture, 26 revolving speed of blower is middle-grade, 24 revolving speed of compressor is middle-grade, and battery pack 23 is judged after 5s
When interior mean temperature >=20 DEG C, it is middle-grade, during 24 revolving speed of compressor is that continue to keep solenoid valve 27, which be middle aperture, 26 revolving speed of blower,
Grade, battery pack mean temperature is judged again after 5s, again by electronic control unit 28 when 20 DEG C of 23 mean temperature < of battery pack
Judge vehicle local environment temperature range.
D. electronic control unit 28 judges driving cycle for high load capacity operating condition, and in battery pack 23 at 30 DEG C of < of average temperature,
It keeps blower 26 and compressor 24 to be in close state and continue 5s, then vehicle local environment temperature is differentiated by electronic control unit 28
Spend section.
When electronic control unit 28 differentiates that vehicle is in hot environment, following control strategy is taken:
A. electronic control unit 28 judges driving cycle for running on the lower load, when and average temperature in battery pack 23 >=30 DEG C,
Control solenoid valve 27 is maximum opening, 26 revolving speed of blower is middle-grade, 24 revolving speed of compressor is middle-grade, if judging battery pack 23 after 5s
When interior mean temperature >=20 DEG C, then continue keep solenoid valve 27 be maximum opening, 26 revolving speed of blower is middle-grade, 24 revolving speed of compressor
For middle-grade, battery pack mean temperature is judged again after 5s, until 20 DEG C of 23 mean temperature < of battery pack whens are single by electronic control again
Member 28 judges vehicle local environment temperature range.
B. electronic control unit 28 judge driving cycle for running on the lower load, and average 30 DEG C of < of temperature in battery pack 23, guarantor
It holds blower 26 and compressor 24 is in close state and continues 5s, then vehicle local environment temperature is differentiated by electronic control unit 28
Section.
C. electronic control unit 28 judge driving cycle for high load capacity operating condition, and mean temperature >=30 DEG C in battery pack 23
When, control solenoid valve 27 is maximum opening, 26 revolving speed of blower is maximum, 24 revolving speed of compressor is maximum, judges electricity after 5s
In pond packet 23 when mean temperature >=20 DEG C, then continuing to keep solenoid valve 27 is maximum opening, 26 revolving speed of blower is maximum, compression
24 revolving speed of machine is maximum, judges 23 mean temperature of battery pack again after 5s, when 20 DEG C of 23 mean temperature < of battery pack again
Vehicle local environment temperature range is judged by electronic control unit 28.
E. electronic control unit 28 judges driving cycle for high load capacity operating condition, and in battery pack 23 at 30 DEG C of < of average temperature,
It keeps blower 26 and compressor 24 to be in close state and continue 5s, then vehicle local environment temperature is differentiated by electronic control unit 28
Spend section；
When electronic control unit 28 monitors mean temperature climbing >=3 DEG C/s in battery pack 23, battery at this time is assert
Packet 23 needs that strongest cooling capacity is directly taken to control mid-winter, electronic control unit 28 there are mid-winter
Directly control 27 aperture of solenoid valve and increase to maximum opening, 26 revolving speed of blower is improved to most high-grade, 24 revolving speed of compressor improve to
It is most high-grade, later at interval of 23 mean temperature climbings in 1s time monitoring one-shot battery packet, until average temperature in battery pack 23
3 DEG C/s of < is spent, takes above-mentioned control strategy under normal circumstances again later.
Claims (14)
1. power battery pack R134a refrigerant is direct-cooled to couple cooling system with heat pipe, it is characterised in that by battery pack (23), compression
Machine (24), condenser (25), solenoid valve (27) are sequentially connected to become a system circuit by pipeline, it is further characterized in that having one
The blower (26) of a rotation rate-controllable to radiate to condenser (25).
2. according to claim 1, the battery pack (23) includes battery pack (1), flat hot pipe array (2), metal profile
(3), the components such as current divider (4), evaporation cold plate (5), upper housing (6), lower case (7)；
3. the battery pack (1) using monomer bulk battery (7) it is characterized in that being placed vertically, being blocky according to claim 2
The mode that parallel, horizontal is arranged in parallel on metal profile (3) between battery forms the battery pack (1).
4. according to claim 2, the flat hot pipe array (2) it is characterized in that each monomer flat hot pipe (10) width
Degree is equal to monomer bulk battery (8), and height is slightly above monomer bulk battery (8), and thickness reaches several millimeters, and material is aluminium；It is flat
Heat pipe array (2) arrangement is identical as the arrangement of battery pack (1), monomer bulk battery (8) and monomer flat hot pipe
(10) alternate intervals are arranged on metal profile (3), and reinforce heat transfer effect on the contact surface with High thermal-conductive silicone grease smearing, and
Certain bradyseism effect is provided.It is filled, is played with thermal conductive silicon rubber mat between monomer bulk battery (8) and monomer flat hot pipe (10)
Bradyseism and anti-puncture effect.
5. according to claim 2, the metal profile (3) if it is characterized in that have above a large trough by high and low and
The dry heat pipe insertion groove (11) lower than large trough, battery pack (1) and flat hot pipe array (2) are just put into rectangular large trough, each
Heat pipe insertion groove (11) then can just be placed in a monomer flat hot pipe (10).Battery pack (1) is integrally put into and is coated with thermal conductive silicon
Fixation is blocked in the large trough of rouge, and flat hot pipe array (2) is inserted directly into metal profile by stretching out the part of rectangular cell
In heat pipe insertion groove (11) and blind is smeared with heat-conducting silicone grease and reinforces heat transfer effect, and certain bradyseism effect is provided；Metal
Have at left and right sides of support plate (3) for supporting role, the support plate fixing rib (12) extended downwardly directly with lower case (7) phase
Contact avoids lower part evaporation cold plate (5) from directly bearing the weight of upper element；Lower cavity size and evaporation cold plate (5) size
It is identical.There are several current divider fixing lug boss (13) outstanding at left and right sides of metal profile (3), is respectively used to the support left and right sides
Current divider (4), and be bolted using pipe collar (17) and fix current divider (4).There is several side before and after metal profile (3)
Corner element structures (14) are mutually permanently connected by screw and lower case (7).
6. according to claim 2, the current divider (4), it is characterised in that have an inlet diverter (4) and one outlet point
Device (5) are flowed to constitute；There are a total mouth and several bifurcations on each current divider (4)；Bifurcations respectively with evaporation cold plate (5)
On arrival end or outlet end pass through rubber tube connect；Total mouth of inlet diverter (4) and outlet splitter (4) is connected by tubing
The current divider being connected on lower case (7) reserves bayonet (20).
7. the evaporation cold plate (5) is it is characterized in that be placed on metal profile (3) lower cavity simultaneously according to claim 2
It directly contacts with metal profile (3), and by support plate fixing rib (12) at left and right sides of metal profile (3) and is evaporated with screw
Cold plate (5) is mutually permanently connected；There are several refrigerant flow paths being parallel to each other in evaporation cold plate (5), inner flow passage uses oblate section
Face, and width is apparently higher than depth of section, to enhance exchange capability of heat, and runner spaced set；Inlet and outlet have stretching plate body
A part, the entrance T shape metal tube (15) to be stood upside down between every two runner with one or outlet T shape metal tube (15) and this two
A runner welding, the shape metal tube top T is connected with the bifurcations of current divider (4) with rubber tube.In addition, in the case where evaporating cold plate (5)
A heat conductive silica gel gasket (9) is filled, the frictional oscillation slowed down between evaporation cold plate (5) and lower case (7) impacts, while having both one
Fixed heat spreading function.
8. the upper housing (6) and lower case (7) are it is characterized in that using high strength composite system according to claim 2
At.There are the shell fixation hole (22) corresponded to each other for connection in upper housing (6) and lower case (7) edge, and upper housing (6) is buckled in
In lower case (7), it is bolted.The connection of upper housing (6) and lower case (7) uses waterproofing design, and edge all uses outer
Turn over structure, so as to upper housing (6) and lower case (7) be harmonious it is more stable；Lower case edge surface is dug there are two semicircle conduit, time
The entire shell rim in portion is equipped with circular section identical with conduit radius waterproof rubber ring (19), in upper housing in two conduits
(6) there are the arc groove of same radius, but less than half circular arc in corresponding position, when being harmonious so as to upper housing (6) and lower case (7)
There is certain squeezing action to waterproof rubber ring, makes waterproof effect more preferably.
9. the lower case (7) bottom inner surface has for fixing metal profile (3) and evaporation according to claim 2
The large trough of cold plate (5)；Several support plate fixing lug boss (21) with threaded hole, metal profile are distributed before and after big groove edge
(3) corner element structures (14) of its front and back side are mutually permanently connected with support plate fixing lug boss (21) by screw.
10. the direct-cooled control method for coupling cooling system with heat pipe of power battery pack R134a refrigerant, it is characterised in that by vehicle
Differentiate after the environment temperature sensor acquisition ambient temperature signal, that is, signal a on surface through electronic control unit (28) i.e. ECU, by ring
Border temperature range is divided into three low temperature environment, medium temperature environment, hot environment ranks；It is adopted by the power sensor of vehicular electric machine
Collect power output signal, that is, signal b to differentiate through electronic control unit (28), vehicle form operating condition is divided into conventional at the uniform velocity i.e. low negative
Lotus and acceleration and two kinds of operating conditions of low-speed big, that is, high load capacity；It is by the temperature sensor temperature collection signal in battery pack (23)
Signal c is transferred to electronic control unit (28) monitoring battery pack (23) interior mean temperature.The specific environment temperature according to locating for vehicle
Mean temperature situation in degree and given travel operating condition and battery pack (23), electronic control unit (28) is to solenoid valve (27)
Aperture rank, blower (26) revolving speed, compressor (24) revolving speed take corresponding control.
11. according to claim 10, the control method is it is characterized in that, when electronic control unit (28) differentiate that vehicle is in
When low temperature environment, following control strategy is taken:
A. when electronic control unit (28) judges driving cycle for running on the lower load, blower (26) and compressor (24) is kept to be in
Closed state simultaneously continues 5s, differentiates vehicle local environment temperature range by electronic control unit (28) again later.
B. electronic control unit (28) judges driving cycle for high load capacity operating condition, and in battery pack (23) at 30 DEG C of < of average temperature,
It keeps blower (26) and compressor (24) to be in close state and continue 5s, differentiates vehicle by electronic control unit (28) again later
Local environment temperature range.
C. electronic control unit (28) judge driving cycle for high load capacity operating condition, and battery pack (23) interior mean temperature >=30 DEG C
When, control solenoid valve (27) be minimum aperture, blower (26) revolving speed be the slow-speed of revolution, compressor (24) revolving speed is the slow-speed of revolution, after 5s
If judge battery pack (23) interior mean temperature >=20 DEG C, continue to keep solenoid valve (27) to be minimum aperture, blower (26) turn
Speed is the slow-speed of revolution, compressor (24) revolving speed is the slow-speed of revolution, judges battery pack (23) mean temperature after 5s again, until battery pack
(23) 20 DEG C of mean temperature < when again by electronic control unit (28) differentiate vehicle local environment temperature range.
12. according to claim 10, the control method is it is characterized in that, when electronic control unit (28) differentiate that vehicle is in
When medium temperature environment, following control strategy is taken:
A. when electronic control unit (28) judges driving cycle for running on the lower load, and averagely warm in battery pack (23) >=30 DEG C
When, control solenoid valve (27) is middle aperture, blower (26) revolving speed is deep low gear, compressor (24) revolving speed is deep low gear, if after 5s
When judging battery pack (23) interior mean temperature >=20 DEG C, then continuing to keep solenoid valve (27) is middle aperture, blower (26) revolving speed is
Deep low gear, compressor (24) revolving speed are deep low gear, judge battery pack (23) mean temperature again after 5s, until battery pack (23) are flat
Vehicle local environment temperature range is differentiated by electronic control unit (28) again at equal 20 DEG C of < of temperature.
B. electronic control unit (28) judges driving cycle for running on the lower load, and in battery pack (23) at 30 DEG C of < of average temperature,
It keeps blower (26) and compressor (24) to be in close state and continue 5s, then is differentiated locating for vehicle as electronic control unit (28)
Environment temperature section.
C. electronic control unit (28) judge driving cycle for high load capacity operating condition, and battery pack (23) interior mean temperature >=30 DEG C
When, control solenoid valve (27) is middle aperture, blower (26) revolving speed is middle-grade, compressor (24) revolving speed is middle-grade, judges electricity after 5s
When Chi Bao (23) interior mean temperature >=20 DEG C, continuing to keep solenoid valve (27) is middle aperture, blower (26) revolving speed is middle-grade, compression
Machine (24) revolving speed is middle-grade, judges battery pack (23) mean temperature again after 5s, until 20 DEG C of mean temperature < of battery pack (23)
When vehicle local environment temperature range is judged by electronic control unit (28) again.
D. electronic control unit (28) judges driving cycle for high load capacity operating condition, and in battery pack (23) at 30 DEG C of < of average temperature,
It keeps blower (26) and compressor (24) to be in close state and continue 5s, then is differentiated locating for vehicle as electronic control unit (28)
Environment temperature section.
13. according to claim 10, the control method is it is characterized in that, when electronic control unit (28) differentiate that vehicle is in
When hot environment, following control strategy is taken:
A. electronic control unit (28) judges driving cycle for running on the lower load, when and average temperature in battery pack (23) >=30 DEG C,
Control solenoid valve (27) is maximum opening, blower (26) revolving speed is middle-grade, compressor (24) revolving speed is middle-grade, if judging electricity after 5s
When Chi Bao (23) interior mean temperature >=20 DEG C, then continue keep solenoid valve (27) be maximum opening, blower (26) revolving speed be middle-grade,
Compressor (24) revolving speed is middle-grade, judges battery pack (23) mean temperature again after 5s, until battery pack (23) mean temperature <
Vehicle local environment temperature range is judged by electronic control unit (28) again at 20 DEG C.
B. electronic control unit (28) judge driving cycle for running on the lower load, and average 30 DEG C of < of temperature in battery pack (23), guarantor
It holds blower (26) and compressor (24) is in close state and continues 5s, then differentiate ring locating for vehicle as electronic control unit (28)
Border temperature range.
C. electronic control unit (28) judge driving cycle for high load capacity operating condition, and battery pack (23) interior mean temperature >=30 DEG C
When, control solenoid valve (27) is maximum opening, blower (26) revolving speed is maximum, compressor (24) revolving speed is maximum, after 5s
When judging battery pack (23) interior mean temperature >=20 DEG C, then continue to keep solenoid valve (27) to be maximum opening, blower (26) revolving speed
It is maximum for maximum, compressor (24) revolving speed, judges battery pack (23) mean temperature after 5s again, until battery pack (23)
Vehicle local environment temperature range is judged by electronic control unit (28) again at 20 DEG C of mean temperature <.
E. electronic control unit (28) judges driving cycle for high load capacity operating condition, and in battery pack (23) at 30 DEG C of < of average temperature,
It keeps blower (26) and compressor (24) to be in close state and continue 5s, then is differentiated locating for vehicle as electronic control unit (28)
Environment temperature section；
14. according to claim 10, the direct-cooled control method that cooling system is coupled with heat pipe of power battery pack R134a refrigerant,
It is further characterized in that when electronic control unit (28) monitors the interior mean temperature climbing >=3 DEG C/s of battery pack (23), control
Solenoid valve (27) aperture increases to maximum opening, and blower (26) revolving speed is improved to most high-grade, and compressor (24) revolving speed is improved to most
Top grade, later at interval of the interior mean temperature climbing of 1s time monitoring one-shot battery packet (23), until average in battery pack (23)
The strategy in claim 11 to claim 12 is taken to be executed when 3 DEG C/s of temperature <, otherwise holding solenoid valve (27) is
Maximum opening, blower (26) revolving speed are maximum, compressor (24) revolving speed is maximum.
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