CN106505278B - A kind of heat-exchange device for Li-ion batteries piles - Google Patents
A kind of heat-exchange device for Li-ion batteries piles Download PDFInfo
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- CN106505278B CN106505278B CN201611059961.5A CN201611059961A CN106505278B CN 106505278 B CN106505278 B CN 106505278B CN 201611059961 A CN201611059961 A CN 201611059961A CN 106505278 B CN106505278 B CN 106505278B
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/24—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries
- B60L58/26—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries by cooling
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- 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
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
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- 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
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- 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
- H01M10/6561—Gases
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- 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
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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
-
- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Electrochemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Manufacturing & Machinery (AREA)
- Sustainable Energy (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Transportation (AREA)
- Power Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Secondary Cells (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention discloses a kind of heat-exchange devices for Li-ion batteries piles, including heat exchanger, the top of heat exchanger is equipped with gas feed gas vent, cooling liquid inlet and cooling liquid outlet, in heat exchanger, gas feed is tightly connected the heat-exchanging chamber for being used for heat exchange, the side of heat-exchanging chamber is coolant liquid accommodating chamber corresponding with cooling liquid inlet, the other side of heat-exchanging chamber is coolant liquid corresponding with cooling liquid outlet unhurried current room, refrigerant gas is passed through in coolant liquid by heat-exchanging chamber, makes refrigerant gas and coolant liquid that heat exchange occur.By simplifying heat-exchanger rig, by the way of direct contact heat transfer, compared with tube wall heat exchange mode, heat exchange efficiency in such a way that refrigerant gas is directly contacted with coolant liquid is higher by 21% or more than the heat exchange efficiency of plate heat exchanger, heat exchange efficiency than tubular heat exchanger is higher by 13% or more, can reduce significant component of energy consumption.
Description
Technical field
The present invention relates to battery of electric vehicle group field, in particular to a kind of heat-exchange device for Li-ion batteries piles.
Background technique
Since Li-ion batteries piles are affected by temperature greatly, it is easy to decompose battery electrolyte and then causes battery early ageing, it is existing
There are Li-ion batteries piles to usually require to carry out forced ventilation heat dissipation to it when in use, to avoid heat build-up.But due to electricity
When electrical automobile just starts or when climbing, battery pack by the heat distributed than operating normally when heat more than it is very much, pass
The radiator fan of system is often difficult to distribute these heats in the short time, and it is fast that these heats will lead to battery pack battery core temperature
Speed increases, and when battery core temperature reaches 45 DEG C or more, which will be in repid discharge state, and the battery core of the not up to temperature is still
In regular picture state, after multiple, service life and performance in repid discharge state battery core will decline significantly, battery
The design requirement and target at initial stage will be also not achieved in the performance of group.
Therefore, air-cooled mode can not achieve the purpose that make battery pack Homogeneouslly-radiating, meanwhile, what is divulged information to battery pack
Meanwhile being easy to bring dust and other sundries in battery pack into and polluting battery core, cause battery pack charge-discharge behavior bad, sternly
It when weight, easily leads to and forms the small-scale short circuit in part in battery pack, uneven heat release situation is further aggravated in battery pack, makes electricity
Pond performance is greatly reduced.
In the prior art, to come to carry out circulation cooling to battery pack by using oil liquid there are also a kind of, general scheme is, to
It is passed through oil liquid in battery case, is effectively radiated by oil liquid to battery pack, since the thermal coefficient of liquid is higher than gas, leads to
The mode for crossing liquid cooling can realize that Quick uniform radiates, and compensate for air-cooled deficiency, still, it is unfavorable that battery pack is directly contacted with oil liquid
In the long-time service and safety of battery pack, leakproofness that is perishable and destroying battery pack causes battery pack short circuit and scraps, together
When, it is more demanding to the structure and material of battery case and battery pack by the way of liquid cooling, have sternly to the sealing performance of battery case
The condition of lattice limits, and causes the mode cost of liquid cooling is more air-cooled to be higher by very much, therefore, there is also more for the mode of liquid cooling
It is insufficient.
Summary of the invention
Goal of the invention of the invention is: in view of the above problems, providing a kind of heat for Li-ion batteries piles
Switch simplifies heat-exchanger rig, matches with Li-ion batteries piles, improve the heat dissipation of battery pack by improving heat exchange efficiency
Ability.
The technical solution adopted by the invention is as follows: a kind of heat-exchange device for Li-ion batteries piles, including heat exchange
Device, the top of heat exchanger are equipped with for being passed through the gas feed of refrigerant gas, the gas vent for refrigerant gas to be discharged, using
In in the cooling liquid inlet for being passed through coolant liquid and cooling liquid outlet for coolant liquid to be discharged, heat exchanger, gas feed sealing
Connection one is used for the heat-exchanging chamber of heat exchange, and the side of heat-exchanging chamber is coolant liquid corresponding with cooling liquid inlet receiving
Room, the other side of heat-exchanging chamber are coolant liquid corresponding with cooling liquid outlet unhurried current room, and refrigerant gas is passed through by heat-exchanging chamber
In coolant liquid, make refrigerant gas and coolant liquid that heat exchange occur.
Due to the setting of above structure, refrigerant gas is entered in the heat-exchanging chamber of heat exchanger by gas feed, is needed
The coolant liquid of heat exchange enters coolant liquid accommodating chamber by cooling liquid inlet, and heat-exchanging chamber changes coolant liquid by refrigerant gas
Heat, the coolant liquid after heat exchange flow into coolant liquid unhurried current interior, are discharged outside heat exchanger through cooling liquid outlet, after using heat exchange
Coolant liquid radiates to battery pack, and achievees the purpose that recycle.
Further, in order to better implement heat-exchange device of the invention, heat-exchanging chamber, coolant liquid accommodating chamber and coolant liquid
Unhurried current room is independently chamber, and the top of heat-exchanging chamber is equipped with the inlet being connected to coolant liquid accommodating chamber, heat-exchanging chamber
Lower part is equipped with the leakage fluid dram being connected to coolant liquid unhurried current room, and the bottom that the lower end of gas feed extends to heat-exchanging chamber is integrated certainly
Form extension.
Due to the setting of above structure, the coolant liquid for needing to exchange heat enters and is stored in coolant liquid accommodating chamber, coolant liquid
It accommodates indoor coolant liquid and is discharged into through inlet into heat-exchanging chamber, refrigerant gas discharges system into heat-exchanging chamber by extension
Cold air, refrigerant gas are directly contacted with coolant liquid, and make coolant liquid " boiling ", coolant liquid and refrigerant gas direct contact heat transfer
Mode heat exchange efficiency, it is higher than carrying out the heat exchange efficiency of mode of tube wall heat exchange with heat exchanger tube, and then improve heat exchange
The heat exchange efficiency of device enables coolant liquid preferably to carry out Homogeneouslly-radiating to battery pack.Coolant liquid after exchanging heat passes through drain
Mouth flows into coolant liquid unhurried current interior, and the indoor coolant liquid of coolant liquid unhurried current passes through cooling liquid outlet and is externally discharged, the system after heat exchange
Then heat exchanger is discharged by gas vent in cold air, to reuse refrigerant gas.
Further, in order to enhance heat transfer effect, the lower end of extension is equipped with exhaust pipe, uniformly distributed several exhausts on exhaust pipe
Hole.It is discharged into refrigerant gas into coolant liquid by gas vent, increases refrigerant gas and coolant liquid contact area, time of contact prolongs
Long, contact area is more dispersed, is conducive to uniform heat exchange, meanwhile, the setting of gas vent can also reduce the intensity of coolant liquid " boiling ", prevent
Only coolant liquid, which enters, pollutes pipeline in gas feed, improve the utilization rate of refrigerant gas.
Further, in order to which the refrigerant gas after heat exchange is discharged, the lower end of gas vent is protruded into heat-exchanging chamber, and is handed over heat
Room sealed connection is changed, the lower end of gas vent is not contacted with coolant liquid.Refrigerant gas after heat exchange rises to inside heat-exchanging chamber
Top, through heat-exchanging chamber top gas vent discharge.
It is heat-exchanging chamber, cold as an improvement, in view of coolant liquid accommodating chamber and the coolant liquid indoor gas that flows slowly are not easy to be discharged
But the venthole of exhaust, heat-exchanging chamber, coolant liquid accommodating chamber are respectively provided at the top of liquid accommodating chamber and coolant liquid unhurried current room
Existing clearance space forms auxiliary heat-exchanging room in heat exchanger each other with coolant liquid unhurried current room, is equipped in gas vent
Pressure reducing valve, the lower end of gas vent are placed in auxiliary heat-exchanging room, and refrigerant gas is discharged by gas vent in auxiliary heat-exchanging room.
Due to the setting of above structure, the gas of heat-exchanging chamber, coolant liquid accommodating chamber and coolant liquid unhurried current room passes through outlet
Hole is discharged into auxiliary heat-exchanging room, and since the gas of discharge is mostly the refrigerant gas after exchanging heat, there are still a part not
The energy utilized, the refrigerant gas after these heat exchange can be to heat-exchanging chamber, coolant liquid accommodating chamber and cold in auxiliary heat-exchanging room
But the wall surface of liquid unhurried current room exchanges heat, and then plays the role of auxiliary heat-exchanging, improves the utilization rate of refrigerant gas, pressure reducing valve
Setting be to further increase utilization rate to extend refrigerant gas in the auxiliary heat-exchanging indoor residence time.
As a kind of alternative, coolant liquid accommodating chamber is communicated with coolant liquid unhurried current room, and pressure reducing valve is equipped in gas vent,
And gas vent is respectively placed in coolant liquid accommodating chamber and coolant liquid unhurried current is indoor, the lower end of gas feed extends to heat-exchanging chamber
It is interior, and be tightly connected with heat-exchanging chamber, the whole body of heat-exchanging chamber is equipped with several heat exchanging holes.
Due to the setting of above structure, heat-exchanging chamber passes through heat exchanging holes to coolant liquid accommodating chamber and the indoor row of coolant liquid unhurried current
Refrigerant gas is put, the wider more efficient heat exchange area of manufacture makes the coolant liquid entered in heat exchanger constantly " boiling ", after heat exchange
Coolant liquid discharged by cooling liquid inlet, after the air pressure in heat exchanger be more than setting value after, pressure reducing valve is opened, system
Cold air is then discharged by gas vent.
In order to further increase heat exchange efficiency, the shape of the cross section of heat-exchanging chamber is T shape, cooling liquid inlet and coolant liquid
The lower end of outlet extends in coolant liquid separately down.
In conclusion by adopting the above-described technical solution, the beneficial effects of the present invention are: refrigerant gas by gas into
Mouth enters in the heat-exchanging chamber of heat exchanger, and the coolant liquid for needing to exchange heat enters coolant liquid accommodating chamber by cooling liquid inlet, heat
Switch room exchanges heat to coolant liquid by refrigerant gas, and the coolant liquid after heat exchange flows into coolant liquid unhurried current interior, through coolant liquid
Outside outlet discharge heat exchanger, by using the mode that refrigerant gas is directly contacted with coolant liquid, makes coolant liquid " boiling ", improve
The heat exchange efficiency of refrigerant gas and coolant liquid enables the fast quick-recovery of coolant liquid to working performance, improves Li-ion batteries piles
Heat dissipation performance, reduce the use and manufacturing cost of liquid cooling to a certain extent, the adaptability of liquid cooling improved, through testing
Out, compared with tube wall heat exchange mode, for example, with tubular heat exchanger and plate heat exchanger, it is direct with coolant liquid using refrigerant gas
The heat exchange efficiency of the mode of contact is higher by 21% or more than the heat exchange efficiency of plate heat exchanger, and the heat exchange than tubular heat exchanger is imitated
Rate is higher by 13% or more.
Detailed description of the invention
Fig. 1 is a kind of Li-ion batteries piles structural schematic diagram；
Fig. 2 is the structural schematic diagram opened after upper cover in Fig. 1；
Fig. 3 is the positive structure diagram of Fig. 2；
Fig. 4 is the overlooking structure diagram of Fig. 2；
Fig. 5 is electric-insulation heat-conduction bag structural schematic diagram in Fig. 2；
Fig. 6 is the thin bag structural schematic diagram of electric-insulation heat-conduction in Fig. 2；
Fig. 7 is a kind of structural schematic diagram of internal heat exchanger in Fig. 2；
Fig. 8 is the positive structure diagram of Fig. 7；
Fig. 9 is the indoor extension structural schematic diagram of heat exchange in Fig. 8；
Figure 10 is another structural schematic diagram of internal heat exchanger in Fig. 2；
Figure 11 is the positive structure diagram of Figure 10.
Marked in the figure: 1 is shell, 101 be input hole, and 102 be delivery outlet, and 2 be battery core, and 201 be electrical chip, and 3 hand over for heat
Parallel operation, 301 be gas feed, and 302 be gas vent, and 303 be cooling liquid inlet, and 304 be cooling liquid outlet, and 4 lead for electrical isolation
Hot bag, 401 outlets, 5 be the thin bag of electric-insulation heat-conduction, and 501 be inlet hole, and 502 be outlet opening, and 6 be upper cover, and 601 be mounting hole, 7
It is coolant liquid accommodating chamber for heat-exchanging chamber, 8,9 be coolant liquid unhurried current room, and 10 be inlet, and 11 be leakage fluid dram, and 12 be extension,
1201 be exhaust pipe, and 1202 be gas vent, and 13 be auxiliary Heat Room, and 14 be heat exchanging holes.
Specific embodiment
With reference to the accompanying drawing, the present invention is described in detail.
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
As shown in Figures 1 to 6, a kind of Li-ion batteries piles, including shell 1 and several battery cores 2 being placed in shell 1, outside
Shell 1 is equipped with the input hole 101 passed through for infusion pipeline and delivery outlet 102(input hole 101 and delivery outlet 102 on the shell
Be symmetric), heat-exchange device is equipped in Li-ion batteries piles, heat-exchange device includes heat exchanger 3, adjacent battery core 2 it
Between be equipped with the electric-insulation heat-conduction bag 4 equipped with coolant liquid, the two sides of electric-insulation heat-conduction bag 4 and the side of battery core 2 fit closely, with
Make that heat exchange occurs between electric-insulation heat-conduction bag 4 and battery core 2.Heat exchanger 3 is used for the heat exchange of coolant liquid and gas.Heat exchange
The top of device 3 is equipped with for being passed through the gas feed 301 of refrigerant gas, the gas vent 302 for refrigerant gas to be discharged, being used for
It is passed through the cooling liquid inlet 303 of coolant liquid and the cooling liquid outlet 304 for coolant liquid to be discharged, the connection of gas feed 301 can pump
Enter the air pump (being not drawn into figure) of refrigerant gas, gas vent 302 connects refrigerating plant (being not drawn into figure) to form gas
Circuit.Cooling liquid outlet 304 is connect with liquid pump (being not drawn into figure), that is, passes through liquid pump for handing in heat exchanger 3 through heat
Coolant liquid after changing pumps out, and coolant liquid is sent into electric-insulation heat-conduction bag 4 by the output end of liquid pump by infusion pipeline, electrical isolation
Heat conducting bag 4 be equipped with outlet 401, as shown in figure 5, outlet 401 by infusion pipeline connect with cooling liquid inlet 303 it is cold to be formed
But liquid circuit, i.e. coolant liquid in electric-insulation heat-conduction bag 4 are sent after heat exchange again to continuing in heat exchanger 3 to repeat benefit
With.
After heat exchanger 3 receives refrigerant gas, heat exchange occurs for coolant liquid and refrigerant gas in heat exchanger 3, cooling
Liquid temperature reduces, and coolant liquid after cooling is sent into electric-insulation heat-conduction bag 4 by liquid pump and infusion pipeline, electric-insulation heat-conduction bag
Cryogenic liquid is full of in 4, since battery core 2 and electric-insulation heat-conduction bag 4 are face contacts, most heats on 2 surface of battery core
The cryogenic liquid flowed is taken away, and the coolant liquid for obtaining heat is back in heat exchanger 3 by infusion pipeline to be continued with,
And then realize and radiate to the Quick uniform of Li-ion batteries piles, since coolant liquid whole process does not occur directly with battery core 2
Contact also avoids cooling corrosion and causes the defect of short circuit.
In order to further increase the heat exchange area of battery core 2 Yu coolant liquid, the ability of coolant liquid Quick uniform heat dissipation, institute are improved
Stating battery core 2 includes electrical chip 201, the thin bag 5 of electric-insulation heat-conduction equipped with coolant liquid is equipped between adjacent electrical chip 201, such as Fig. 6 institute
Show, the thin bag 5 of electric-insulation heat-conduction is equipped with inlet hole 501 and outlet opening 502, and inlet hole 501 connects liquid pump, and outlet opening 502 connects
Cooling liquid inlet 303 is connect, coolant liquid is pumped into the thin bag 5 of electric-insulation heat-conduction through liquid pump, and passes through the thin bag 5 of electric-insulation heat-conduction and battery core
Heat exchange occurs for piece 201, the coolant liquid substitution that the coolant liquid after heat exchange is constantly newly pumped into, and passes through the thin bag of electric-insulation heat-conduction
5 outlet opening 502 is discharged, and then realizes the thin bag 5 of electric-insulation heat-conduction and constantly carry out heat exchange with electrical chip 201.
Furthermore, in heat exchanger 3, gas feed 301 is tightly connected the heat-exchanging chamber for being used for heat exchange
7, as shown in figs. 7 to 11, the side of heat-exchanging chamber 7 is coolant liquid accommodating chamber 8 corresponding with cooling liquid inlet 303, and heat is handed over
The other side for changing room 7 is coolant liquid corresponding with cooling liquid outlet 304 unhurried current room 9, and refrigerant gas is passed through cold by heat-exchanging chamber 7
But in liquid, make refrigerant gas and coolant liquid that heat exchange occur.
Refrigerant gas is entered by gas feed 301 in the heat-exchanging chamber 7 of heat exchanger, and the coolant liquid for needing to exchange heat passes through cold
But liquid import 303 enters coolant liquid accommodating chamber 8, and heat-exchanging chamber 7 exchanges heat to coolant liquid by refrigerant gas, cold after heat exchange
But liquid stream enters in coolant liquid unhurried current room 9, is discharged outside heat exchanger through cooling liquid outlet 304, realizes the purpose recycled.
As an implementation, in order to better implement heat-exchange device of the invention, heat-exchanging chamber 7, coolant liquid are held
It receives room 8 and coolant liquid unhurried current room 9 is independently chamber, as shown in Figure 7 to 9, the top of heat-exchanging chamber 7 is equipped with and coolant liquid
The inlet 10 that accommodating chamber 8 is connected to, the lower part of heat-exchanging chamber 7 are equipped with the leakage fluid dram 11 being connected to coolant liquid unhurried current room 9, gas into
The bottom that the lower end of mouth 301 extends to heat-exchanging chamber 7 is formed as one extension 12 certainly.The coolant liquid for needing to exchange heat enters and deposits
In coolant liquid accommodating chamber 8, the coolant liquid in coolant liquid accommodating chamber 8 is discharged into through inlet 10 into heat-exchanging chamber 7 for storage, and freeze gas
Body discharges refrigerant gas into heat-exchanging chamber 7 by extension 12, and refrigerant gas is directly contacted with coolant liquid, and makes coolant liquid
The heat exchange efficiency of the mode of " boiling ", coolant liquid and refrigerant gas direct contact heat transfer, than carrying out tube wall heat exchange with heat exchanger tube
The heat exchange efficiency of mode wants high, and then improves the heat exchange efficiency of heat-exchange device, enable coolant liquid preferably to battery pack into
Row Homogeneouslly-radiating.Coolant liquid after exchanging heat flows into coolant liquid by leakage fluid dram 11 and flows slowly in room 9, and coolant liquid flows slowly in room 9
Coolant liquid is externally discharged by cooling liquid outlet 304, and the refrigerant gas after heat exchange then passes through gas vent 302 and heat exchanger is discharged
Outside 3, to reuse refrigerant gas.
As an implementation, in order to enhance heat transfer effect, the lower end of extension 12 is equipped with exhaust pipe 1201, such as Fig. 9
It is shown, uniformly distributed several gas vents 1202 on exhaust pipe 1201.It is discharged into refrigerant gas into coolant liquid by gas vent 1202, makes to make
Cold air and coolant liquid contact area increase, and time of contact extends, and contact area is more dispersed, are conducive to uniform heat exchange, meanwhile, exhaust
The setting in hole 1202 can also reduce the intensity of coolant liquid " boiling ", prevent coolant liquid from entering and pollute pipeline in gas feed, improve
The utilization rate of refrigerant gas.
Furthermore, in order to which the refrigerant gas after heat exchange is discharged, heat-exchanging chamber 7 is protruded into the lower end of gas vent 302
It is interior, and be tightly connected with heat-exchanging chamber 7, as shown in Figure 7 and Figure 8, the lower end of gas vent 302 is not contacted with coolant liquid.Heat exchange
Refrigerant gas afterwards rises to the top inside heat-exchanging chamber 7, and the gas vent 302 through 7 top of heat-exchanging chamber is discharged.
As an improvement ground embodiment, it is contemplated that the gas in coolant liquid accommodating chamber 8 and coolant liquid unhurried current room 9 is not easy
The top of discharge, heat-exchanging chamber 7, coolant liquid accommodating chamber 8 and coolant liquid unhurried current room 9 is respectively provided with the venthole of exhaust, heat
Existing clearance space is formed auxiliary in heat exchanger 3 between switch room 7, coolant liquid accommodating chamber 8 and coolant liquid unhurried current room 9
Heat Room 13 is helped, is equipped with pressure reducing valve in gas vent 302, the lower end of gas vent 302 is placed in auxiliary heat-exchanging room 13, and auxiliary is changed
Refrigerant gas is discharged by gas vent 302 in hot cell 13.The gas of heat-exchanging chamber 7, coolant liquid accommodating chamber 8 and coolant liquid unhurried current room 9
Body is discharged into auxiliary heat-exchanging room 13 by venthole, since the gas of discharge is mostly the refrigerant gas after exchanging heat, still
There are a part of unused energy, refrigerant gas after these heat exchange can be to heat-exchanging chamber 7, cold in auxiliary heat-exchanging room 13
But liquid accommodating chamber 8 and the wall surface of coolant liquid unhurried current room 9 exchange heat, and then play the role of auxiliary heat-exchanging, improve refrigeration gas
The utilization rate of body, the setting of pressure reducing valve are the residence times in order to extend refrigerant gas in auxiliary heat-exchanging room 13, are further mentioned
High usage.
As a kind of embodiment as an alternative, coolant liquid accommodating chamber 8 is communicated with coolant liquid unhurried current room 9, such as Figure 10 and Figure 11
It is shown, pressure reducing valve is equipped in gas vent 302, and gas vent 302 is respectively placed in coolant liquid accommodating chamber 8 and coolant liquid unhurried current room
In 9, the lower end of gas feed 301 is extended in heat-exchanging chamber 7, and is tightly connected with heat-exchanging chamber 7, the whole body of heat-exchanging chamber 7
Equipped with several heat exchanging holes 14, heat exchanging holes 14 can be unidirectional heat exchanging holes.Heat-exchanging chamber 7 passes through heat exchanging holes 14 to coolant liquid accommodating chamber
8 and coolant liquid unhurried current room 9 in discharge refrigerant gas, the wider more efficient heat exchange area of manufacture makes to enter cold in heat exchanger 3
But constantly " boiling ", the coolant liquid after heat exchange is discharged liquid by cooling liquid inlet 303, super to the air pressure in heat exchanger 3
After crossing setting value, pressure reducing valve is opened, and refrigerant gas then passes through gas vent 302 and discharges.
In order to further increase heat exchange efficiency, the shape of the cross section of heat-exchanging chamber 7 is T shape, cooling liquid inlet 303 and cold
But the lower end of liquid outlet 304 extends in coolant liquid separately down.
Through experiment obtain, compared with tube wall heat exchange mode, for example, with tubular heat exchanger and plate heat exchanger, using refrigeration
The heat exchange efficiency for the mode that gas is directly contacted with coolant liquid is higher by 21% or more than the heat exchange efficiency of plate heat exchanger, compares tubulation
The heat exchange efficiency of formula heat exchanger is higher by 13% or more, and heat exchange efficiency significantly improves, and has significant ground economic benefit, can be electronic
The permanent energy saving of automobile.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (6)
1. a kind of heat-exchange device for Li-ion batteries piles, including heat exchanger, which is characterized in that the top of heat exchanger
Equipped with the gas feed for being passed through refrigerant gas, the gas vent for refrigerant gas to be discharged, for being passed through the cold of coolant liquid
But liquid import and the cooling liquid outlet for coolant liquid to be discharged, in heat exchanger, gas feed is tightly connected one and hands over for heat
The heat-exchanging chamber changed, the side of heat-exchanging chamber are coolant liquid accommodating chamber corresponding with cooling liquid inlet, heat-exchanging chamber it is another
Side is coolant liquid corresponding with cooling liquid outlet unhurried current room, and refrigerant gas is passed through in coolant liquid by heat-exchanging chamber, makes the gas that freezes
Heat exchange occurs for body and coolant liquid；Heat-exchanging chamber, coolant liquid accommodating chamber and coolant liquid unhurried current room are independently chamber, heat exchange
The top of room is equipped with the inlet being connected to coolant liquid accommodating chamber, and the lower part of heat-exchanging chamber, which is equipped with, flows slowly what room was connected to coolant liquid
Leakage fluid dram, the bottom that the lower end of gas feed extends to heat-exchanging chamber are formed as one extension certainly.
2. being used for the heat-exchange device of Li-ion batteries piles as described in claim 1, which is characterized in that the lower end of extension is set
There are exhaust pipe, uniformly distributed several gas vents on exhaust pipe.
3. being used for the heat-exchange device of Li-ion batteries piles as claimed in claim 2, which is characterized in that the lower end of gas vent
It protrudes into heat-exchanging chamber, and is tightly connected with heat-exchanging chamber, the lower end of gas vent is not contacted with coolant liquid.
4. being used for the heat-exchange device of Li-ion batteries piles as claimed in claim 2, which is characterized in that heat-exchanging chamber, cooling
Be respectively provided with the venthole of exhaust at the top of liquid accommodating chamber and coolant liquid unhurried current room, heat-exchanging chamber, coolant liquid accommodating chamber and
Existing clearance space forms auxiliary heat-exchanging room in heat exchanger each other for coolant liquid unhurried current room, is equipped with and subtracts in gas vent
Pressure valve, the lower end of gas vent are placed in auxiliary heat-exchanging room, and refrigerant gas is discharged by gas vent in auxiliary heat-exchanging room.
5. as described in claim 1 be used for Li-ion batteries piles heat-exchange device, which is characterized in that coolant liquid accommodating chamber with
Coolant liquid unhurried current room communicates, and pressure reducing valve is equipped in gas vent, and gas vent is respectively placed in coolant liquid accommodating chamber and coolant liquid
Unhurried current is indoor, and the lower end of gas feed extends in heat-exchanging chamber, and is tightly connected with heat-exchanging chamber, and the whole body of heat-exchanging chamber is set
There are several heat exchanging holes.
6. as claimed in claim 5 be used for Li-ion batteries piles heat-exchange device, which is characterized in that heat-exchanging chamber it is transversal
The shape in face is T shape, and the lower end of cooling liquid inlet and cooling liquid outlet extends in coolant liquid separately down.
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| CN201611059961.5A CN106505278B (en) | 2016-11-28 | 2016-11-28 | A kind of heat-exchange device for Li-ion batteries piles |
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| CN201611059961.5A CN106505278B (en) | 2016-11-28 | 2016-11-28 | A kind of heat-exchange device for Li-ion batteries piles |
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| CN106505278B true CN106505278B (en) | 2018-12-04 |
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| CN111326686B (en) * | 2018-12-14 | 2024-09-10 | 宁波邵金塑料制品有限公司 | Lead storage battery shell with heat dissipation and moisture prevention functions |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101542806A (en) * | 2006-11-24 | 2009-09-23 | 丰田自动车株式会社 | Electric power supply system |
| CN104409793A (en) * | 2014-11-24 | 2015-03-11 | 东风汽车公司 | Power battery thermal management system for electric vehicle |
| CN205069810U (en) * | 2015-10-27 | 2016-03-02 | 山东精工电子科技有限公司 | Power lithium cell group that possesses dual heat dissipation function |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006331956A (en) * | 2005-05-27 | 2006-12-07 | Sanyo Electric Co Ltd | Power supply device for vehicle |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101542806A (en) * | 2006-11-24 | 2009-09-23 | 丰田自动车株式会社 | Electric power supply system |
| CN104409793A (en) * | 2014-11-24 | 2015-03-11 | 东风汽车公司 | Power battery thermal management system for electric vehicle |
| CN205069810U (en) * | 2015-10-27 | 2016-03-02 | 山东精工电子科技有限公司 | Power lithium cell group that possesses dual heat dissipation function |
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Effective date of registration: 20181023 Address after: 312030, fourth floor, building 1, north gate of Qixian international logistics center, Keqiao, Shaoxing, Zhejiang. Applicant after: Safe Technology Ltd of Zhejiang Address before: 618000 1-16-5 A, the famous city of No. 136 Min Jiang Road, Deyang economic and Technological Development Zone, Sichuan. Applicant before: DEYANG JIUDINGZHIYUAN INTELLECTUAL PROPERTY OPERATION CO., LTD. |
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