CN105762437B - Immersion type battery box temperature control system - Google Patents
Immersion type battery box temperature control system Download PDFInfo
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- CN105762437B CN105762437B CN201410790500.XA CN201410790500A CN105762437B CN 105762437 B CN105762437 B CN 105762437B CN 201410790500 A CN201410790500 A CN 201410790500A CN 105762437 B CN105762437 B CN 105762437B
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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 is a kind of related immersion type battery box temperature control system.The immersion type battery box temperature control system includes: immersion type battery case；First cooling pipeline；Second cooling pipeline；Third cooling pipeline；Temperature sensor is set to the battery pack side of the immersion type battery case, detects the temperature of the battery pack；And temperature control unit, the temperature signal of the battery pack of temperature sensor transmission is received, the starting and closing of the first cooling circuit, the second cooling circuit, third cooling circuit or heating device are controlled.Immersion type battery box temperature control system of the invention, with excellent temperature control and temperature equalization ability.
Description
Technical field
This application involves a kind of battery box temperature control technology field is arrived, can be universally used in more particularly to one kind a variety of electronic
The immersion type battery box temperature control system with the anti-thermal runaway of temperature control of automobile.
Background technique
Battery case used in existing electric car is using air control or water control mostly in terms of temperature control.Fig. 1
It is the schematic diagram of the battery case of existing air control.The battery case of this air control has the import 204 and outlet of the wind of control temperature
206.The battery case of air control needs to need enough intervals between open space and single battery, reduces space utilization rate
With the energy density of battery case, open space be easy to cause the foreign matters such as dust, liquid to enter, and the deposition of dust reduces heat dissipation
Efficiency, improves battery case thermal runaway, and the accumulation of liquid improves the danger coefficient of short circuit.Fig. 2A, Fig. 2 B are existing water controls
Battery case partial schematic diagram, water route schematic diagram.The battery case of this water control, in the battery pack 202 being made of monocell 201
Surrounding is provided with module framework 205 and heat dissipating top cover 207, and battery pack 202 realizes fixation by buckle 203 and module framework 205,
And the water route for controlling temperature is provided in module framework 205.The battery case of water control is more harsh to sealing requirements, because
Easily lead to battery short circuit for leak, causes explosion on fire.To prevent aqueous cooling liquid leakage from causing battery pack short-circuit, battery is improved
Group thermal balance, patent No. CN201320344003.8 water-cooling system is using insulation oil liquid as cooling medium, and insulate oil liquid boiling point
Generally greater than 200 DEG C, and the SEI film of lithium battery can be decomposed at 90~130 DEG C, electrolyte and insertion lithium at a temperature of this, activity
Substance and adhesive can all react.Once there is battery that thermal runaway occurs, nearby liquid can add this thermal runaway battery quickly
Heat directly results in battery temperature raising around, causes battery thermal runaway to 200 DEG C or more.
Summary of the invention
In view of defect present in the above-mentioned prior art, the object of the present invention is to provide a kind of immersion type battery cases
Temperature control system makes it have excellent temperature control and temperature equalization ability.
To achieve the goals above, a kind of immersion type battery box temperature control system proposed according to the present invention comprising:
At least one immersion type battery case, the immersion type battery case include: battery box enclosure, have first receiving space；Multiple batteries
Group is contained in the first receiving space, and the backward battery box enclosure extension is electrically connected between the multiple battery pack and is stretched out just
Negative electrode；Electrical isolation, non-combustible and boiling point are lower than 65 DEG C of evaporative cooling liquid, and it is empty which is flowed into first receiving
Between in, partly or entirely impregnate the height of the battery pack, the upper side wall of the liquid level of the evaporative cooling liquid and the battery box enclosure it
Between have gap；And heating device, it is set to inside or outside the battery box enclosure, and thermally contacted with the evaporative cooling liquid；Its
In, the top of the battery box enclosure is provided with the steam outlet that the evaporative cooling liquid is discharged by thermogenetic steam, the battery
Box enclosure is additionally provided with the refluxing opening to flow back after the steam condensation cooling of the evaporative cooling liquid；First cooling pipeline, one end with should
Steam outlet connection, the other end are connected to the refluxing opening, are provided with the first turbulence pump in the first cooling pipeline；Second cooling
Pipeline, one end are connected to the steam outlet, and the other end is connected to the refluxing opening, are provided with condenser in the second cooling pipeline
And second eddy current pump；Third cooling pipeline, by heat exchange manifolds road out in parallel in the second cooling pipeline, the heat exchange manifolds road
It is contacted with the exchanger heat in air conditioner loop；Temperature sensor, is set to the battery pack side of the immersion type battery case, and detection should
The temperature of battery pack；And temperature control unit, the temperature signal of the battery pack of temperature sensor transmission is received, control should
First cooling circuit, second cooling circuit, third cooling circuit or heating device starting and closing.
The present invention also can be used following technical measures and further realize.
Immersion type battery box temperature control system above-mentioned, wherein the evaporative cooling liquid is six carbon fluoro ketones.
Immersion type battery box temperature control system above-mentioned, wherein the temperature control unit, in the temperature of the battery pack
When degree is lower than first threshold, start the heating device and/or the first cooling pipeline；The battery pack temperature between the first threshold
When value and second threshold, start the first cooling pipeline, so that the steam of the evaporative cooling liquid is cold via the first cooling pipeline
The immersion type battery case is flowed back into after solidifying cooling；When the temperature of the battery pack is between second threshold and third threshold value, starting should
Second cooling pipeline, so that the steam of the evaporative cooling liquid flows back into the immersion type after cooling down via the second cooling pipeline condensation
Battery case；When the temperature of the battery pack is greater than third threshold value, start third cooling pipeline and the air conditioner loop, so that the steaming
The steam for sending out coolant liquid cools down after pipeline condensation cools down via the third flows back into the immersion type battery case.
Immersion type battery box temperature control system above-mentioned, wherein the temperature of the battery pack is greater than third threshold value
When, the cooling rank of the air conditioner loop is adjusted with the temperature in the battery pack: the temperature of the battery pack is greater than third threshold
It is worth and when less than four threshold values, which starts first order refrigeration；The temperature of the battery pack be greater than the 4th threshold value and
When less than five threshold values, which starts second level refrigeration；When the temperature of the battery pack is greater than five threshold values, which is returned
Road starts third level refrigeration.
Immersion type battery box temperature control system above-mentioned further includes pressure sensor and concentration sensor, the pressure
Sensor is set in the cooling pipeline, detects the pressure in the cooling pipeline；The concentration sensor is set to the cooling pipeline
In, detect the concentration of the steam；The pressure sensor and the concentration sensor are connect with the temperature control unit signal respectively.
Immersion type battery box temperature control system above-mentioned, wherein the temperature control unit is according to the temperature, the pressure
Power and/or the concentration, control this first cooling circuit, second cooling circuit, third cooling circuit or heating device starting and
It closes, alarm when control is abnormal.
To achieve the goals above, a kind of immersion type battery box temperature control system also proposed according to the present invention, packet
Include: at least one immersion type battery case, the immersion type battery case include: battery box enclosure, have first receiving space；Multiple electricity
Pond group is contained in the first receiving space, and the backward battery box enclosure extension is electrically connected between the multiple battery pack and is stretched out
Positive and negative electrode；Electrical isolation, non-combustible and boiling point are lower than 65 DEG C of evaporative cooling liquid, which is flowed into first receiving
In space, the battery pack is partly or entirely impregnated, is had between the liquid level of the evaporative cooling liquid and the upper side wall of the battery box enclosure
Gap；And heating device, it is set to inside or outside the battery box enclosure, and thermally contacted with the evaporative cooling liquid；Wherein, the electricity
The top of pond box enclosure, which is provided with, is discharged the evaporative cooling liquid by the steam outlet of thermogenetic steam, and the battery box enclosure is also
It is provided with the refluxing opening to flow back after the steam condensation cooling of the evaporative cooling liquid；Cool down pipeline, and one end and the steam outlet connect
Logical, the other end is connected to the refluxing opening, is provided with turbulence pump in the cooling pipeline；Multiple temperature reducing units, respectively with the cooling pipe
The different parts on road thermally contact；Temperature sensor is set to the battery pack side of the immersion type battery case, detects the battery pack
Temperature；And temperature control unit, the temperature signal of the battery pack of temperature sensor transmission is received, multiple cooling is controlled
The work of unit or heating device.
The present invention also can be used following technical measures and further realize.
Immersion type battery box temperature control system above-mentioned, wherein multiple temperature reducing units be respectively the first fan,
Second fan, the first refrigeration section, the second refrigeration section and third refrigeration section.
Immersion type battery box temperature control system above-mentioned, wherein multiple temperature reducing units are fan cooling portion, electricity
One or more combination in sub- refrigeration section, air-conditioning system cooling end.
Immersion type battery box temperature control system above-mentioned, wherein the temperature control unit, in the temperature of the battery pack
Degree reaches predetermined threshold alarm.
The present invention has obvious advantages and beneficial effects compared with the existing technology.By above-mentioned technical proposal, the present invention
Immersion type battery box temperature control system, at least have the advantage that
One, immersion type battery box temperature control system of the invention, evaporative cooling liquid come into full contact with battery pack, have control
The technical effect of each battery pack temperature equilibrium.
Two, immersion type battery box temperature control system of the invention, under single battery out-of-control condition, thermal runaway battery week
The boiling of side evaporative cooling liquid rapidly take away a large amount of heat, fully control thermal runaway battery ambient temperature by gasification, phase transformation, contains
Its influence to adjacent cell, to contain the diffusion of battery thermal runaway.
Three, immersion type battery box temperature control system of the invention, battery pack are soaked in evaporative cooling liquid, and having prevents electricity
Spark and the technical effect of fire extinguishing.
Four, immersion type battery box temperature control system of the invention, while there is very strong thermal runaway to control and inhibit
The ability that chain reaction occurs, while there is excellent fire extinguishing effect after battery pack thermal runaway is on fire, have to thermal runaway non-
The inhibition diffusion of Chang Youyi.
Detailed description of the invention
Fig. 1 is the schematic diagram of the battery case of existing air control.
Fig. 2A is the partial schematic diagram of the battery case of existing water control.
Fig. 2 B is the water route schematic diagram of the battery case of existing water control.
Fig. 3 is the schematic cross-sectional view of immersion type battery case first embodiment of the present invention.
Fig. 4 is the schematic diagram of immersion type battery box temperature control system first embodiment of the present invention.
Fig. 5 is the stereoscopic schematic diagram of the application immersion type battery case second embodiment.
Fig. 6 is the schematic cross-sectional view of the application immersion type battery case second embodiment.
Fig. 7 is the stereoscopic schematic diagram of the lower case equipped with battery pack of the application immersion type battery case second embodiment.
Fig. 8 A is the stereoscopic schematic diagram of the upper housing of the application immersion type battery case second embodiment.
Fig. 8 B is the schematic cross-sectional view of the upper housing of the application immersion type battery case second embodiment.
Fig. 9 A is the schematic top plan view of the heating mantle of the application immersion type battery case second embodiment.
Fig. 9 B is the schematic side view of the heating mantle of the application immersion type battery case second embodiment.
Fig. 9 C is another schematic side view of the heating mantle of the application immersion type battery case second embodiment.
Figure 10 is the schematic diagram of immersion type battery box temperature control system second embodiment of the present invention.
Figure 11 is the schematic diagram of the heat exchanger of air conditioner loop.
Figure 12 is the control schematic diagram of immersion type battery box temperature control system second embodiment of the present invention.
Specific embodiment
It is of the invention to reach the technical means and efficacy that predetermined goal of the invention is taken further to illustrate, below in conjunction with
Attached drawing and preferred embodiment, to plunge battery case proposed according to the present invention and its temperature control system its specific embodiment,
Step, structure, feature and its effect are described in detail.
It please refers to shown in Fig. 3, is the schematic cross-sectional view of one embodiment of immersion type battery case of the present invention.
The immersion type battery case 300 of one embodiment of the invention includes that battery box enclosure 310 is contained in battery box enclosure 310
Interior multiple battery packs 8 and evaporative cooling liquid 11.
There is first receiving space 313 in above-mentioned battery box enclosure 310.The top of the battery box enclosure 310 is provided with
The evaporative cooling liquid 11 is discharged by the steam outlet 6 of thermogenetic steam, which is additionally provided with evaporation cooling
The refluxing opening 61 to flow back after the steam condensation cooling of liquid 11.
Above-mentioned multiple battery packs 8 are contained in the first receiving space 313 of the battery box enclosure 310, the multiple electricity
Extend positive and negative two electrode (not shown)s to outside battery box enclosure 310 after being electrically connected between pond group 8.
Above-mentioned evaporative cooling liquid 11 is flowed into 313 in the first receiving space of the battery box enclosure 310, the soaking battery
Some or all of group 8 height.The evaporative cooling liquid 11 is electrical isolation, does not burn and liquid of the boiling point lower than 60 DEG C.The evaporation
Coolant liquid 11 is existing known coolant, for example, six carbon fluoro ketones, and but not limited to this.In the present embodiment, evaporative cooling liquid
11 are saturated with the battery pack 8, and are not filled with 313 in the first receiving space.Evaporative cooling liquid 11 for example application No. is
201210430819.2 Chinese patent application in disclose.Evaporative cooling liquid 11 be preferably selection standard atmospheric pressure boiling point between
40 DEG C to 60 DEG C of liquid.
Above-mentioned immersion type battery case 300 can also include heating device 10, be set in battery box enclosure 310 or battery
Outside box enclosure 310, thermally contacted with the evaporative cooling liquid 11.In the present embodiment, heating device 10 is arranged at 310 bottom of battery box enclosure
On the outside of portion.
Above-mentioned immersion type battery case 300 can also include heating device 10, be set in battery box enclosure 310 or battery
Outside box enclosure 310, thermally contacted with the evaporative cooling liquid 11.In the present embodiment, heating device 10 is arranged at 310 bottom of battery box enclosure
On the outside of portion.
Above-mentioned battery box enclosure 310 includes upper housing 1 and lower case 2, and upper housing 1 and the sealed connection of lower case 2 are defined
The first receiving space 313 out.The second accommodation space 315 is also provided in the battery box enclosure 310, second receiving is empty
Between 315 with the first receiving space 313 be space independent, be not connected to mutually.In other embodiments, second receiving
Space 315 and the first receiving space 313 can be interconnected.
Above-mentioned immersion type battery case 300 can also include battery management circuit plate 71.The battery management circuit plate 71 is set
It is placed in second accommodation space 313, which connect with multiple 8 signal of battery pack, receives and transmits
The status information of multiple battery pack 8.The status information of battery pack 8 refers to voltage, electric current, resistance, fever, the charging shape of battery
The information such as state or electricity, but not limited to this.
Above-mentioned immersion type battery case 300 can be used for electric car, provide power for electric car.For electric car
When, it can series-parallel multiple immersion type battery cases 300.
Immersion type battery case 300 of the invention, evaporative cooling liquid 11 come into full contact with battery pack 8, have control battery pack temperature
The balanced technical effect of degree.Immersion type battery case 300 of the invention, under single battery out-of-control condition, thermal runaway battery week
Side evaporative cooling liquid 11 boils rapid gasification, and phase transformation takes away a large amount of heat, fully controls thermal runaway battery ambient temperature, hold back
Its influence to adjacent cell is made, to contain the diffusion of battery thermal runaway.Immersion type battery case 300 of the invention, battery pack 8
It is soaked in evaporative cooling liquid 11, there is the technical effect for preventing electric spark and fire extinguishing.
It please refers to shown in Fig. 4, is the schematic diagram of immersion type battery box temperature control system first embodiment of the present invention.This reality
Apply the immersion type battery box temperature control system of example, including immersion type battery case 300, cooling pipeline, multiple temperature reducing units and temperature
Spend control unit 430.
The immersion type battery case 300 is as described in the previous embodiment, repeats no more.In other embodiments, can have more
The immersion type battery case 300 of a electrical connection constitutes power battery pack.
The cooling pipeline refers to communicating pipe 418 and the cooling circuit that turbulence pump 401 is constituted.One end of cooling pipeline
It is connected to the steam outlet 6 of immersion type battery case 300, the other end is connected to the refluxing opening 61 of each immersion type battery case 300.It should
Evaporative cooling liquid 11 is condensed cooling by the thermogenetic steam in the cooling pipeline.
Multiple temperature reducing units, thermally contact with the different parts of the cooling pipeline respectively.In the present embodiment, multiple drops
Warm unit includes the first fan 801 being set in turn in around the communicating pipe 418, the second fan 802, the first air-conditioning cold air outlet
803, the second air-conditioning cold air outlet 804 and third air-conditioning cold air outlet 805.The first air-conditioning cold air outlet 803, the second air-conditioning cold air outlet
804 and third air-conditioning cold air outlet 805 be connected to respectively with the cooling system of air-conditioning system (not shown go out).In other embodiments,
Multiple temperature reducing unit can be, fan cooling portion, electronic cooling portion, combination one or more in air-conditioning system cooling end.
The temperature control unit 430, receives the temperature signal for the battery pack 8 that the circuit board 71 detects, control should
The work of multiple temperature reducing units or heating device 10.
It please refers to shown in Fig. 5 to Fig. 9 C, is perspective view, cross-sectional view, the dress of another embodiment of immersion type battery case of the present invention
There are the stereoscopic schematic diagram of the lower case of battery pack, the stereoscopic schematic diagram of upper housing, the schematic cross-sectional view of upper housing, heating mantle to bow
Depending on schematic diagram, the schematic side view of heating mantle, another schematic side view of heating mantle.
The immersion type battery case 300 of the present embodiment includes battery box enclosure 310 and multiple battery packs 8.Multiple battery packs 8
It is packed into the battery box enclosure 310 of battery case upper housing 1 and the composition of battery case lower case 2.Battery case upper-lower casing 1,2 seals,
Sealing grade reaches IP67, by arranging that bandage realizes that battery case upper-lower casing 1,2 is fixed in bandage slot 3.Battery pack 8 with
Heating device 10 is fixed between lower case 2.Heating device 10 include heating mantle 101 (rigid material is shown in Fig. 6) and be placed in add
Harness is drawn battery box enclosure by line set 5 and line set 51 by the heating cushion 103 in hot jacket 101,10 connection wiring harness of heating device
Outside 310, line set 5 and line set 51 pass through hole 501 and hole 502 on upper housing 1 (see Fig. 7).The lower case 2 of battery box enclosure 310
One jiao of bottom end is provided with return port 61, and the evaporative cooling liquid 11 for condensing cooling is returned to inside battery box enclosure 310 by return port 61.
Anode and cathode terminals 4 and 41 integrated injection molding of terminal after multiple electrical connections of battery packs 8 are on upper housing 1.Battery management circuit plate
(BMS from plate) 71 is contained in battery box enclosure 310, and the harness through hole 7 of battery management circuit plate (BMS from plate) 71 is drawn.
Convergence plate 9 is provided on upper housing 1, convergence plate 9 can converge the steam of evaporative cooling liquid 11, by upper housing 1
Steam port 6, steam is drawn.For the filling of evaporative cooling liquid 11 in battery box enclosure 310, the liquid level of evaporative cooling liquid 11 is more than electricity
8 height about 2mm of pond group.Design has muscle 91 on convergence plate 9, and muscle 91 forms the channel 92 played the role of to steam guide flow.
101 upper bottom surface 102 of heating mantle is provided with appropriate hole 105, has riser among heating mantle bottom surface 103 and 102 upper bottom surface of heating mantle
104, riser 104 improves heating mantle intensity, provides the intensity for meeting support battery pack 8, suitable hole is provided on riser 104
106。
It please refers to shown in Figure 10, Figure 11, Figure 12, is that immersion type battery box temperature control system second of the present invention is implemented respectively
Example schematic diagram, heat exchanger schematic diagram, immersion type battery box temperature control system second embodiment control schematic diagram.
It is formed after the immersion type battery box temperature control system of the present embodiment, including multiple 300 Electricity Federations of immersion type battery case
Battery case group 412, the first cooling pipeline, the second cooling pipeline, third cooling pipeline, temperature sensor 512,513, pressure pass
Sensor 514, gas concentration sensor 515,522 and temperature control unit 511.
The immersion type battery case 300 is as described in the first two embodiment.
The first cooling pipeline, starting point are connected to 300 steam outlet 6 of immersion type battery case, other end connection leaching
The refluxing opening 61 of liquid formula battery case 300, first cooling pipeline in be provided with the first turbulence pump 415 and three-way valve 414, three-way valve
414 direction b1 pipeline is eventually connected to the refluxing opening 61 of immersion type battery case 300.
The second cooling pipeline, starting point are connected to 300 steam outlet 6 of immersion type battery case, other end connection leaching
The refluxing opening 61 of liquid formula battery case 300, second cooling pipeline in be provided with the first turbulence pump 415, three-way valve 414, three-way valve 414
The direction a1 pipeline, radiator 413, second eddy current pump 402, three-way valve 403, the direction the c pipeline of three-way valve 403 is eventually connected to
The refluxing opening 61 of immersion type battery case 300.
The third cooling pipeline is to separate branch by the three-way valve 403 of the second cooling pipeline, such as three-way valve in Figure 10
403 direction b separates branch, which is communicated to logical immersion type electricity after thermally contacting with the heat exchanger 404 (refrigeration) of air conditioner loop
The refluxing opening 61 of pond case 300.In Figure 10, compressor 402 is connected with condenser 407, and fan 406 is equipped with behind condenser 407,
Condenser 407 connects fluid reservoir 405, and fluid reservoir 405 is connect with expansion valve 410, pipeline connection heat exchanger after expanded valve 410
404 (heat exchanger 404 is absorption refrigeration component, has crew module's refrigeration and 412 coolant liquid heat sinking function of battery case group concurrently) have formed
Whole air conditioner loop.Wherein radiator 413 is arranged in front of the car with condenser 407 and leans on, and natural wind when vehicle driving is cooling.
For immersion type battery case in normal use, battery-heating is normal, and 11 steam of evaporative cooling liquid is from 300 phase transformation of battery case
It is evaporated, through turbulence pump 415, into three-way solenoid valve 414, the direction b1 is in close state at this time, and coolant liquid is through radiator
413 cooling liquids, then enter three-way solenoid valve 403 through turbulence pump 401, the direction b is closed at this time, and evaporative cooling liquid is returned through the direction c
Stream enters battery case 300 and completes battery pack cooling.
Winter battery start at low temperature and charging there are security risks, while 412 available power of battery case group under low temperature
It is very low.The immersion type battery box temperature control system of the present embodiment, also offer real time monitoring mode, vehicle stops for a long time in winter
It puts, when battery temperature is lower than temperature first threshold (such as 10 DEG C), starts heating function, when battery pack temperature reaches second temperature
Threshold value (such as 30 DEG C), then stop heating.Particularly, (such as 10 DEG C) battery when battery temperature is lower than one temperature threshold of temperature control
300 bottom heating element 420 of case is powered, and heats to evaporative cooling liquid in battery case.When pressure change is little in the case, steam
Hair coolant liquid is evaporated from battery case 300, enters three-way solenoid valve 414 through turbulence pump 415, the direction a1 is closed at this time, the side b1
Coolant liquid is set to flow back into battery case group 412 to conducting.
Immersion type battery box temperature control system, in evaporative cooling liquid sharply volatileness, such as battery abnormal heating, battery
When thermal runaway, efficient rapid cooling is needed, guarantees that coolant liquid turns gas in liquid and gas turns the speed of liquid phase transition process, ability
Reach and inhibits thermal runaway purpose.Radiator 413 is relied solely at this time and has been unable to satisfy demand, and the heat exchanger 404 of air-conditioning duct is opened
Beginning plays a role (being traditional A/C evaporator when heat exchanger 404 does not work herein)；(please referring to Figure 11) evaporative cooling liquid
Steam walks a, b pipeline of threeway 403 through turbulence pump 401, and the coolant inlet 111 through heat exchanger 404 enters, through 112 stream of outlet
Out.The refrigerant of air conditioner loop enters through entrance 114, through outlet 115 outflow, the refrigerant refrigerant of air conditioner loop 116 in pipeline in
Gaseous state is become from liquid and absorbs big calorimetric, is contacted through fin 113 with cooling line 117, evaporative cooling liquid flows in pipeline 117
It is logical, achieve the purpose that cooling.
The temperature control unit (BMS) 511, by CAN line receiving sensor information, and transmits control command.Often
Temperature sensor 512,513 is disposed in a battery case 300；Between turbulence pump 415 and battery pack 412, close to battery pack 412
One end is disposed with gas pressure sensor 514 and constant pressure valve 522；Between radiator 413 and turbulence pump 401, close to turbulence pump
401 one end are disposed with gas concentration sensor 515.
Temperature sensor 512,513 feeds back battery temperature T, gas pressure P in 514 feedback pipe of gas pressure sensor,
Gas concentration sensor 515 feeds back vapour concentration μ.Three kinds of feedback states amounts use any cooling for system logic judgement
Control model.In Figure 12, three-way solenoid valve 414 connects control signal wire 519, the connection control wire size line 526 of turbulence pump 414, gas
514 connection signal line 524 of pressure sensor, 512 connection signal line 520 of temperature sensor, 513 connection signal of temperature sensor
Line 521, compressor 402 connect control signal wire 516, and turbulence pump 401 connects control signal wire 517, gas concentration sensor 515
Connection signal line 523, three-way solenoid valve 403 connect control signal wire 518.
The immersion type battery box temperature control system of the present embodiment, what which received
The temperature of gas pressure P, vapour concentration μ and battery temperature T information control battery case.
1) when battery temperature T is less than the first temperature threshold (such as 10 DEG C), start heating device 10 and the first cooling pipeline；
That is, the direction b1 is connected in three-way magnetic valve 414, vortex pump 415 starts first cooling pipeline；The steam of evaporative cooling liquid 11 is by the road
Turbulence pump 415 is reached, enters three-way solenoid valve 414 through turbulence pump 415, returns to battery case 300 through the direction b1.
2) when battery temperature T is more than or equal to first threshold and is less than second threshold (such as 30 DEG C), the first cooling of starting
Pipeline (does not start or closes heating device 10)；That is, the direction b1 is connected in three-way magnetic valve 414, vortex pump 415 starts；It evaporates cold
But the steam of liquid 11 reaches turbulence pump 415 by the road, enters three-way solenoid valve 414 through turbulence pump 415, returns to battery through the direction b1
Group 300.Gas pressure P in cooling effect, such as pipeline can also be further provided for according to the size of gas pressure P to be more than or equal to
When first pressure threshold value P1 (when such as 2.5MPa), starting the second cooling pipeline.
3) when battery temperature T is more than or equal to second temperature threshold value and is less than third threshold value (such as 40 DEG C), starting second
Cool down pipeline；That is, the direction a1 is connected in three-way solenoid valve 414, the direction c is connected in three-way magnetic valve 403, and vortex pump 401,415 starts；
The steam of coolant liquid 11 reaches turbulence pump 415 by the road, enters three-way solenoid valve 414 through turbulence pump 415, enters through the direction a1 and dissipate
Hot 413 cooling liquid of device, the coolant liquid come out through radiator 413 reach turbulence pump 401, and coolant liquid 11 is flowed out from turbulence pump 401,
The direction c through three-way solenoid valve 403 returns to battery case 300.Temperature control mode can also be adjusted according to vapour concentration μ, for example,
Vapour concentration μ improves the power of vortex pump 401,415, or starting third cooling pipeline and air-conditioning system when being higher than concentration threshold
System, forced refrigeration.
4) when battery temperature T is more than or equal to third temperature threshold and less than the 4th temperature threshold (such as 45 DEG C), starting
Third cooling pipeline and air-conditioning system；That is, the direction a1 is connected in three-way solenoid valve 414, the direction b, air-conditioning is connected in three-way magnetic valve 403
System starts level-one refrigeration.Temperature control mode can also be adjusted according to vapour concentration μ, for example, being higher than according to vapour concentration μ dense
The power of vortex pump 401,415 is improved when spending threshold value, or the refrigerant level of air-conditioning system is adjusted according to vapour concentration μ.
5) when battery temperature T is more than or equal to the 4th temperature threshold and less than the 5th temperature threshold (such as 60 DEG C), starting
Third cooling pipeline and air-conditioning system；That is, the direction a1 is connected in three-way solenoid valve 414, the direction b, air-conditioning is connected in three-way magnetic valve 403
System opens two dynamic grade refrigeration.Temperature control mode can also be adjusted according to vapour concentration μ, for example, being higher than according to vapour concentration μ dense
The power of vortex pump 401,415 is improved when spending threshold value, or the refrigerant level of air-conditioning system is adjusted according to vapour concentration μ.
6) when battery temperature T is greater than the 5th temperature threshold (such as 60 DEG C), starting third cooling pipeline and air-conditioning system；
That is, the direction a1 is connected in three-way solenoid valve 414, the direction b is connected in three-way magnetic valve 403, and air-conditioning system starting freezes at full capacity, is vortexed
Pump 401,415 starts mode of operating at full capacity.At this point, the steam of coolant liquid 11 reaches turbulence pump 415 by the road, through turbulence pump
415 enter three-way solenoid valve 414, enter 413 cooling liquid of radiator through the direction a1, and the coolant liquid come out through radiator 413 arrives
Up to turbulence pump 401, coolant liquid 11 is flowed out from turbulence pump 401, and the direction b is connected in three-way solenoid valve 403, and coolant liquid 11 enters heat exchanger
404, air conditioner loop starts limit refrigeration, and the coolant liquid 11 flowed out through heat exchanger 404 returns to battery case 300.
Temperature threshold described in the present embodiment, pressure threshold are only for example, can be according to actual use in actual use
Environment is adjusted.Such as first temperature threshold can be 9.5 DEG C or 10 DEG C or 10.5 DEG C of monodrome, can also be numerical intervals,
Such as 9 DEG C -11 DEG C.
The immersion type battery box temperature control system of the present embodiment, what which received
Gas pressure P and battery temperature T judges whether it is abnormality, abnormal alarm.Such as battery temperature T is more than alarm temperature threshold
It is worth (such as 65 DEG C) alarm, prompt is stopped using；For example, battery temperature T is less than the first temperature threshold (such as 10 DEG C), but gas
Pressure P is greater than alarm pressure threshold value P1(such as 2.5MPa) alarm, temperature indicator control system failure.
The vortex pump 401,415 of above-described embodiment can be frequency-changing cyclone pump, can be according to gas pressure P, vapour concentration μ
Output power is adjusted, heat management energy consumption is reduced.Using with level-one, second level and the limit three work in the present embodiment
The vortex pump of mode is also possible to the vortex pump of multi-mode.
The immersion type battery box temperature control system of the present embodiment, preferably, each battery case 300 arrive vortex pump 415
Pipeline diameter and pipe range keep almost the same, flow back the caliber of each battery case 300 from vortex pump 401 and pipe range keep basic
Unanimously.It can guarantee that pressure is balanced in each battery case 300.
Thermo-contact in the present invention is broadly understood, including physical contact, thermal convection contact, heat radiation contact etc..
Immersion type battery box temperature control system of the invention, can be with Personalized air conditioning circuit, and reducing totally-enclosed battery case is
Steam condensation and caused by waste spatially.
Although the present invention has been disclosed as a preferred embodiment, it is so not intended to limit the invention the range of implementation, foundation
Simple equivalent changes and modifications, still fall within technical solution of the present invention made by claims of the present invention and description
In range.
Claims (5)
1. a kind of immersion type battery box temperature control system, it is characterised in that comprising:
At least one immersion type battery case, the immersion type battery case include: battery box enclosure, have first receiving space；It is multiple
Battery pack is contained in the first receiving space, and the backward battery box enclosure extension is electrically connected between the multiple battery pack and is stretched
Positive and negative electrode out；Electrical isolation, non-combustible and boiling point are lower than 65 DEG C of evaporative cooling liquid, which is flowed into first appearance
It receives in space, partly or entirely impregnates the height of the battery pack, the upside of the liquid level of the evaporative cooling liquid and the battery box enclosure
There is gap between wall；And heating device, it is set to inside or outside the battery box enclosure, and thermally contacted with the evaporative cooling liquid；
Wherein, the top of the battery box enclosure is provided with the steam outlet that the evaporative cooling liquid is discharged by thermogenetic steam, the electricity
Pond box enclosure is additionally provided with the refluxing opening to flow back after the steam condensation cooling of the evaporative cooling liquid；
First cooling pipeline, one end are connected to the steam outlet, and the other end is connected to the refluxing opening, in the first cooling pipeline
It is provided with the first turbulence pump；
Second cooling pipeline, one end are connected to the steam outlet, and the other end is connected to the refluxing opening, in the second cooling pipeline
It is provided with condenser and second eddy current pump；
Third cooling pipeline, by heat exchange manifolds road out in parallel, the heat exchange manifolds road and air-conditioning time in the second cooling pipeline
Exchanger heat contact in road；
Temperature sensor is set to the battery pack side of the immersion type battery case, detects the temperature of the battery pack；And
Temperature control unit, receive the temperature sensor transmission the battery pack temperature signal, control this first cooling circuit,
The starting and closing in the second cooling circuit, third cooling circuit or heating device；
The temperature control unit, when the temperature of the battery pack is lower than first threshold, start the heating device and/or this
One cooling pipeline；When the temperature of the battery pack is between first threshold and second threshold, start the first cooling pipeline, so that should
The steam of evaporative cooling liquid flows back into the immersion type battery case after cooling down via the first cooling pipeline condensation；In the battery pack
When temperature is between second threshold and third threshold value, start the second cooling pipeline, so that the steam of the evaporative cooling liquid is via this
The immersion type battery case is flowed back into after second cooling pipeline condensation cooling；When the temperature of the battery pack is greater than third threshold value, open
Third cooling pipeline and the air conditioner loop are moved, so that the steam of the evaporative cooling liquid is via third cooling pipeline condensation cooling
After flow back into the immersion type battery case.
2. immersion type battery box temperature control system as described in claim 1, it is characterised in that wherein the evaporation is cooling
Liquid is six carbon fluoro ketones.
3. immersion type battery box temperature control system as described in claim 1, it is characterised in that the wherein described battery pack
Temperature be greater than third threshold value when, the cooling rank of the air conditioner loop: the battery is adjusted with the temperature in the battery pack
The temperature of group is greater than third threshold value and when less than four threshold value, which starts first order refrigeration；The temperature of the battery pack
Degree is greater than the 4th threshold value and when less than five threshold value, which starts second level refrigeration；The temperature of the battery pack is greater than
When five threshold values, which starts third level refrigeration.
4. immersion type battery box temperature control system as described in claim 1, it is characterised in that it further includes pressure sensor
And concentration sensor, the pressure sensor are set in the cooling pipeline, detect the pressure in the cooling pipeline；Concentration sensing
Device is set in the cooling pipeline, detects the concentration of the steam；The pressure sensor and the concentration sensor respectively with the temperature
The connection of control unit signal.
5. immersion type battery box temperature control system as claimed in claim 4, it is characterised in that wherein temperature control
Unit controls the first cooling circuit, the second cooling circuit, third cooling circuit according to the temperature, the pressure and/or the concentration
Or the starting and closing of heating device, alarm when control is abnormal.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410790500.XA CN105762437B (en) | 2014-12-17 | 2014-12-17 | Immersion type battery box temperature control system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410790500.XA CN105762437B (en) | 2014-12-17 | 2014-12-17 | Immersion type battery box temperature control system |
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| CN105762437A CN105762437A (en) | 2016-07-13 |
| CN105762437B true CN105762437B (en) | 2019-04-02 |
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| CN106410302A (en) * | 2016-12-02 | 2017-02-15 | 天津四洋新能源科技有限公司 | High-and-low-temperature-controllable power lithium ion battery device |
| CN106816667A (en) * | 2017-03-08 | 2017-06-09 | 苏州安靠电源有限公司 | The non-steeped cold safety battery bag of formula liquid |
| CN107086333A (en) * | 2017-06-06 | 2017-08-22 | 华霆（合肥）动力技术有限公司 | Thermal run away detection means and supply unit |
| CN107134605A (en) * | 2017-06-23 | 2017-09-05 | 四川国创成电池材料有限公司 | One kind evaporation cooling flame-proof battery system |
| CN107394313A (en) * | 2017-08-29 | 2017-11-24 | 四川国创成电池材料有限公司 | A kind of flame-proof battery system |
| WO2019126996A1 (en) * | 2017-12-26 | 2019-07-04 | 曙光节能技术（北京）股份有限公司 | Immersion cooling device for power battery |
| CN108232361B (en) * | 2017-12-28 | 2020-07-21 | 曙光节能技术（北京）股份有限公司 | Heat dissipation system of power battery pack and heat dissipation system of power battery |
| WO2019155179A1 (en) * | 2018-02-12 | 2019-08-15 | Valeo Systemes Thermiques | Cooling device for at least one motor vehicle battery |
| CN108550948B (en) * | 2018-04-16 | 2020-11-24 | 河南科技大学 | Cold/heat double-circulation system for thermal management of power battery pack |
| EP3881658A4 (en) * | 2018-11-16 | 2022-09-14 | TMGcore, LLC | Liquid immersion cooling platform |
| US11177514B2 (en) * | 2019-04-16 | 2021-11-16 | Xing Power Inc. | Battery system with management module |
| CN112238752A (en) * | 2020-09-04 | 2021-01-19 | 东风时代(武汉)电池系统有限公司 | Passive detection and protection system and method for thermal runaway of battery pack |
| US12035508B2 (en) | 2020-12-29 | 2024-07-09 | Modine LLC | Liquid immersion cooling platform and components thereof |
| CN113764755B (en) * | 2021-08-03 | 2023-10-24 | 苏州热工研究院有限公司 | Forced circulation cooling and radiating device of energy storage lithium battery pack and installation control method thereof |
| CN113764774B (en) * | 2021-09-09 | 2023-10-17 | 东莞新能安科技有限公司 | Heat dissipation box, battery pack system and electric equipment |
| CN114267898A (en) * | 2021-11-11 | 2022-04-01 | 浙江零跑科技股份有限公司 | Fireproof automobile lithium battery module |
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Address after: 101300 Renhe Town, Beijing, Shunyi District, the north of the town of Victoria Hospital, the 4 (Science and technology innovation function area), 1 Applicant after: BEIJING CHANGCHENG HUAGUAN AUTOMOBILE TECHNOLOGY CO., LTD. Address before: 101300 Beijing City, Yuhua Tianzhu Airport Industrial Zone B Shunyi District Road No. 29 Applicant before: CH AUTO TECHNOLOGY CORPORATION LTD. |
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Denomination of invention: Immersion-liquid-type battery compartment temperature control system Effective date of registration: 20190513 Granted publication date: 20190402 Pledgee: Suzhou Trust Co., Ltd. Pledgor: BEIJING CHANGCHENG HUAGUAN AUTOMOBILE TECHNOLOGY CO., LTD. Registration number: 2019990000418 |