CN105762437A - Immersion-liquid-type battery compartment temperature control system - Google Patents
Immersion-liquid-type battery compartment temperature control system Download PDFInfo
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- CN105762437A CN105762437A CN201410790500.XA CN201410790500A CN105762437A CN 105762437 A CN105762437 A CN 105762437A CN 201410790500 A CN201410790500 A CN 201410790500A CN 105762437 A CN105762437 A CN 105762437A
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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
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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- Y02E60/10—Energy storage using batteries
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Abstract
The present invention relates to an immersion-liquid-type battery compartment temperature control system comprising an immersion-liquid-type battery compartment; a first cooling pipe; a second cooling pipe; a third cooling pipe; a temperature sensor which is disposed on the battery pack side of the immersion-liquid-type battery compartment and is used for detecting battery pack temperature; and a temperature control unit which receives battery pack temperature signals sent by the temperature sensor to control startup and shutdown of a first cooling loop, a second cooling loop, a third cooling loop or a heating device. The immersion-liquid-type battery compartment temperature control system has excellent temperature control and temperature balancing capability.
Description
Technical field
The application relates to a kind of battery case technical field of temperature control, particularly relates to a kind of immersion type battery case temperature control system with the anti-thermal runaway of temperature control that can be universally used in multiple electric automobile.
Background technology
Battery case used in existing electric automobile, is adopt wind control or water control mostly in temperature control.Fig. 1 is the schematic diagram of the battery case of existing wind control.The battery case of this wind control has import 204 and the outlet 206 of the wind controlling temperature.The battery case of wind control, need to need enough intervals between the space opened wide and cell, reduce the energy density of space availability ratio and battery case, the space opened wide easily causes the foreign body such as dust, liquid and enters, the deposition of dust reduces radiating efficiency, improve battery case thermal runaway, gathering of liquid improves short-circuit danger coefficient.Fig. 2 A, Fig. 2 B is the partial schematic diagram of battery case of existing water control, water route schematic diagram.The battery case of this water control, module framework 205 and heat dissipating top cover 207 it is provided around in the set of cells 202 being made up of monocell 201, set of cells 202 realizes fixing by buckle 203 and module framework 205, and is provided with the water route for controlling temperature in module framework 205.The battery case of water control is more harsh to sealing requirements, very easily causes battery short circuit because leaking, and causes blast on fire.For preventing aqueous cooling liquid leakage from causing set of cells short circuit, improve set of cells thermal balance, patent No. CN201320344003.8 water-cooling system adopts insulation fluid as cooling medium, insulation fluid boiling point is generally greater than 200 DEG C, and the SEI film of lithium battery can decompose at 90～130 DEG C, at this temperature, electrolyte all can react with embedding lithium, active substance and adhesive.Once there be battery generation thermal runaway, near this thermal runaway battery, liquid can quickly be heated to more than 200 DEG C, directly results in battery temperature around and raises, causes battery thermal runaway.
Summary of the invention
Because the defect existing for above-mentioned prior art, it is an object of the invention to, it is provided that a kind of immersion type battery case temperature control system so that it is the temperature with excellence controls and temperature equalization ability.
To achieve these goals, according to a kind of immersion type battery case temperature control system that the present invention proposes, comprising: at least one immersion type battery case, this immersion type battery case includes: battery case shell, has the first accommodation space；Multiple set of cells, are contained in this first accommodation space, electrically connect and extend positive and negative electrode outside this battery case shell backward between the plurality of set of cells；Electric insulation, the evaporative cooling liquid that non-combustible and boiling point is lower than 65 DEG C, this evaporative cooling liquid flows in this first accommodation space, partly or entirely soaks the height of this set of cells, has space between the upper side wall of the liquid level of this evaporative cooling liquid and this battery case shell；And, heater, be arranged within this battery case shell or outside, and thermally contact with this evaporative cooling liquid；Wherein, the top of this battery case shell is provided with the steam outlet discharging this evaporative cooling liquid by thermogenetic steam, the refluxing opening that this battery case shell refluxes after being additionally provided with the steam condensation cooling of this evaporative cooling liquid；First cooling pipeline, one end connects with this steam outlet, and the other end connects with this refluxing opening, is provided with the first turbulence pump in this first cooling pipeline；Second cooling pipeline, one end connects with this steam outlet, and the other end connects with this refluxing opening, is provided with condenser and the second turbulence pump in this second cooling pipeline；3rd cooling pipeline, is gone out heat exchange manifolds road by parallel connection in this second cooling pipeline, and this heat exchange manifolds road contacts with the exchanger heat in air conditioner loop；Temperature sensor, is arranged at this battery pack side of this immersion type battery case, detects the temperature of this set of cells；And temperature control unit, receive the temperature signal of this set of cells that this temperature sensor sends, control startup and the closedown of this first cooling loop, the second cooling loop, the 3rd cooling loop or heater.
The present invention also can be applied to the following technical measures to achieve further.
Aforesaid immersion type battery case temperature control system, wherein said evaporative cooling liquid is six carbon fluoro ketones.
Aforesaid immersion type battery case temperature control system, wherein said temperature control unit, when the temperature of this set of cells is lower than first threshold, start this heater and/or this first cooling pipeline；The temperature of this set of cells between first threshold and Second Threshold time, start this first cooling pipeline so that the steam of this evaporative cooling liquid via this first cooling pipeline condensation cooling after be back to this immersion type battery case；The temperature of this set of cells between Second Threshold and three threshold values time, start this second cooling pipeline so that the steam of this evaporative cooling liquid via this second cooling pipeline condensation cooling after be back to this immersion type battery case；When the temperature of this set of cells is more than three threshold values, start the 3rd cooling pipeline and this air conditioner loop so that the steam of this evaporative cooling liquid is lowered the temperature after pipeline condensation is lowered the temperature via the 3rd and is back to this immersion type battery case.
Aforesaid immersion type battery case temperature control system, when the temperature of this wherein said set of cells is more than three threshold values, the cooling rank of this air conditioner loop is adjusted in the temperature of this set of cells: when the temperature of described set of cells is more than the 3rd threshold value and less than four threshold values, this air conditioner loop starts first order refrigeration with this；When the temperature of this set of cells is more than the 4th threshold value and less than five threshold values, this air conditioner loop starts second level refrigeration；When the temperature of this set of cells is more than five threshold values, this air conditioner loop starts third level refrigeration.
Aforesaid immersion type battery case temperature control system, it also includes pressure transducer and concentration sensor, and this pressure transducer is arranged in this cooling pipeline, detects the pressure in this cooling pipeline；This concentration sensor, is arranged in this cooling pipeline, detects the concentration of this steam；This pressure transducer and this concentration sensor are connected with this temperature control unit signal respectively.
Aforesaid immersion type battery case temperature control system, wherein said temperature control unit is according to this temperature, this pressure and/or this concentration, control startup and closedown, warning when controlling abnormal of this first cooling loop, the second cooling loop, the 3rd cooling loop or heater.
To achieve these goals, according to a kind of immersion type battery case temperature control system that the present invention also proposes, comprising: at least one immersion type battery case, this immersion type battery case includes: battery case shell, has the first accommodation space；Multiple set of cells, are contained in this first accommodation space, electrically connect and extend positive and negative electrode outside this battery case shell backward between the plurality of set of cells；Electric insulation, the evaporative cooling liquid that non-combustible and boiling point is lower than 65 DEG C, this evaporative cooling liquid flows in this first accommodation space, partly or entirely soaks this set of cells, has space between the upper side wall of the liquid level of this evaporative cooling liquid and this battery case shell；And heater, be arranged within this battery case shell or outside, and thermally contact with this evaporative cooling liquid；Wherein, the top of this battery case shell is provided with the steam outlet discharging this evaporative cooling liquid by thermogenetic steam, the refluxing opening that this battery case shell refluxes after being additionally provided with the steam condensation cooling of this evaporative cooling liquid；Cooling pipeline, one end connects with this steam outlet, and the other end connects with this refluxing opening, is provided with turbulence pump in this cooling pipeline；Multiple temperature reducing unit, thermally contact with the different parts of this cooling pipeline respectively；Temperature sensor, is arranged at this battery pack side of this immersion type battery case, detects the temperature of this set of cells；And temperature control unit, receive the temperature signal of this set of cells that this temperature sensor sends, control the work of the plurality of temperature reducing unit or heater.
The present invention also can be applied to the following technical measures to achieve further.
Aforesaid immersion type battery case temperature control system, wherein said multiple temperature reducing unit are the first fan, the second fan, the first refrigeration section, the second refrigeration section and the 3rd refrigeration section respectively.
Aforesaid immersion type battery case temperature control system, wherein said multiple temperature reducing unit are one or more combinations in fan cooling portion, electronic cooling portion, air conditioning system cooling end.
Aforesaid immersion type battery case temperature control system, wherein said temperature control unit, the temperature in this set of cells reaches predetermined threshold alarm.
The present invention compared with prior art has clear advantage and beneficial effect.By technique scheme, the immersion type battery case temperature control system of the present invention, at least have the advantage that
One, the immersion type battery case temperature control system of the present invention, evaporative cooling liquid is fully contacted set of cells, has and controls the technique effect that each battery pack temperature is balanced.
Two, the immersion type battery case temperature control system of the present invention, under single battery out-of-control condition, thermal runaway battery circumferential evaporative cooling liquid boiling gasification rapidly, a large amount of heat is taken away in phase transformation, thermal runaway battery ambient temperature is made to be controlled completely, contain its impact on adjacent cell, thus containing what battery thermal runaway spread.
Three, the immersion type battery case temperature control system of the present invention, set of cells is soaked in evaporative cooling liquid, has the technique effect preventing electric spark and fire extinguishing.
Four, the immersion type battery case temperature control system of the present invention, there is very strong thermal runaway simultaneously and control and suppress the ability that chain reaction occurs, there is the fire extinguishing function of excellence simultaneously after set of cells thermal runaway is on fire, thermal runaway is had very excellent suppression diffusion.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the battery case of existing wind control.
Fig. 2 A 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 cross-sectional schematic of immersion type battery case first embodiment of the present invention.
Fig. 4 is the schematic diagram of immersion type battery case temperature control system first embodiment of the present invention.
Fig. 5 is the schematic perspective view of the application immersion type battery case the second embodiment.
Fig. 6 is the cross-sectional schematic of the application immersion type battery case the second embodiment.
Fig. 7 is the schematic perspective view of the lower house equipped with set of cells of the application immersion type battery case the second embodiment.
Fig. 8 A is the schematic perspective view of the upper shell of the application immersion type battery case the second embodiment.
Fig. 8 B is the cross-sectional schematic of the upper shell of the application immersion type battery case the second embodiment.
Fig. 9 A is the schematic top plan view adding hot jacket of the application immersion type battery case the second embodiment.
Fig. 9 B is the schematic side view adding hot jacket of the application immersion type battery case the second embodiment.
Fig. 9 C is another schematic side view adding hot jacket of the application immersion type battery case the second embodiment.
Figure 10 is the schematic diagram of immersion type battery case temperature control system the 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 case temperature control system the second embodiment of the present invention.
Detailed description of the invention
For further setting forth that the present invention reaches technological means and effect that predetermined goal of the invention is taked, below in conjunction with accompanying drawing and preferred embodiment, the plunge battery case proposed according to the present invention and its detailed description of the invention of temperature control system, step, structure, feature and effect thereof are described in detail.
Refer to shown in Fig. 3, be the cross-sectional schematic of immersion type battery case one embodiment of the present invention.
The immersion type battery case 300 of one embodiment of the invention includes, battery case shell 310, the multiple set of cells 8 being contained in battery case shell 310 and evaporative cooling liquid 11.
There is in above-mentioned battery case shell 310 first accommodation space 313.The top of this battery case shell 310 is provided with the steam outlet 6 discharging this evaporative cooling liquid 11 by thermogenetic steam, the refluxing opening 61 that this battery case shell 310 refluxes after being additionally provided with the steam condensation cooling of evaporative cooling liquid 11.
Above-mentioned multiple set of cells 8 are contained in the first accommodation space 313 of this battery case shell 310, electrically connect and extend positive and negative two electrode (not shown)s outside backward battery case shell 310 between the plurality of set of cells 8.
Above-mentioned evaporative cooling liquid 11 flows into the first of this battery case shell 310 and holds in space 313, invades the part or all of height steeping this set of cells 8.This evaporative cooling liquid 11 is electric insulation, does not burn and the boiling point liquid lower than 60 DEG C.This evaporative cooling liquid 11 is existing known coolant, for instance is six carbon fluoro ketones, but is not limited.In the present embodiment, evaporative cooling liquid 11 is saturated with this set of cells 8, and is not filled with this and first holds in space 313.Evaporative cooling liquid 11 is such as disclosed in the Chinese patent application that application number is 201210430819.2.Evaporative cooling liquid 11 is preferably the liquid that selection standard atmospheric pressure boiling point is between 40 DEG C to 60 DEG C.
Above-mentioned immersion type battery case 300 can also include heater 10, is arranged in battery case shell 310 or outside battery case shell 310, thermally contacts with this evaporative cooling liquid 11.In the present embodiment, heater 10 is arranged on battery case shell 310 bottom outside.
Above-mentioned immersion type battery case 300 can also include heater 10, is arranged in battery case shell 310 or outside battery case shell 310, thermally contacts with this evaporative cooling liquid 11.In the present embodiment, heater 10 is arranged on battery case shell 310 bottom outside.
Above-mentioned battery case shell 310 include upper shell 1 and lower house 2, upper shell 1 and lower house 2 be tightly connected define this first hold space 313.Being also provided with the second accommodation space 315 in this battery case shell 310, this second accommodation space 315 and this first accommodation space 313 are each independent space, mutually do not connect.In other embodiments, this second accommodation space 315 can be interconnected with this first accommodation space 313.
Above-mentioned immersion type battery case 300 can also include battery management circuit plate 71.This battery management circuit plate 71 is arranged in this second accommodation space 313, and this battery management circuit plate 71 is connected with the plurality of set of cells 8 signal, receives and transmit the status information of the plurality of set of cells 8.The status information of set of cells 8 refers to the information such as the voltage of battery, electric current, resistance, heating, charged state or electricity, but is not limited.
Above-mentioned immersion type battery case 300 may be used for electric automobile, provides power for electric automobile.During for electric automobile, it is possible to the multiple immersion type battery case 300 of connection in series-parallel.
The immersion type battery case 300 of the present invention, evaporative cooling liquid 11 is fully contacted set of cells 8, has the balanced technique effect controlling battery pack temperature.The immersion type battery case 300 of the present invention, under single battery out-of-control condition, thermal runaway battery circumferential evaporative cooling liquid 11 seethes with excitement and gasifies rapidly, a large amount of heat is taken away in phase transformation, make thermal runaway battery ambient temperature be controlled completely, contain its impact on adjacent cell, thus containing what battery thermal runaway spread.The immersion type battery case 300 of the present invention, set of cells 8 is soaked in evaporative cooling liquid 11, has the technique effect preventing electric spark and fire extinguishing.
Refer to shown in Fig. 4, be the schematic diagram of immersion type battery case temperature control system first embodiment of the present invention.The immersion type battery case temperature control system of the present embodiment, including immersion type battery case 300, cooling pipeline, multiple temperature reducing unit and temperature control unit 430.
Described immersion type battery case 300 is as described in the previous embodiment, repeats no more.In other embodiments, it is possible to have the immersion type battery case 300 of multiple electrical connection to constitute electrokinetic cell bag.
Described cooling pipeline, refers to the cooling loop that communicating pipe 418 and turbulence pump 401 are constituted.One end of cooling pipeline connects with the steam outlet 6 of immersion type battery case 300, and the other end connects with the refluxing opening 61 of each immersion type battery case 300.This evaporative cooling liquid 11 is condensed cooling by this steam thermogenetic in this cooling pipeline.
Described multiple temperature reducing unit, thermally contact with the different parts of this cooling pipeline respectively.In the present embodiment, multiple temperature reducing unit include being set in turn in the first fan 801 around this communicating pipe 418, the second fan 802, the first air-conditioning cold air port 803, the second air-conditioning cold air port 804 and the 3rd air-conditioning cold air port 805.This first air-conditioning cold air port 803, the second air-conditioning cold air port 804 and the 3rd air-conditioning cold air port 805 connect with the cooling system of air conditioning system (not shown go out) respectively.In other embodiments, the plurality of temperature reducing unit is it may be that one or more combination in fan cooling portion, electronic cooling portion, air conditioning system cooling end.
Described temperature control unit 430, receives the temperature signal of the set of cells 8 that this circuit board 71 detects, controls the plurality of temperature reducing unit or the work of heater 10.
Refer to shown in Fig. 5 to Fig. 9 C, be the axonometric chart of immersion type another embodiment of battery case of the present invention, sectional view, equipped with the schematic perspective view of lower house of set of cells, the schematic perspective view of upper shell, upper shell cross-sectional schematic, add the schematic top plan view of hot jacket, add the schematic side view of hot jacket, add another schematic side view of hot jacket.
The immersion type battery case 300 of the present embodiment includes, battery case shell 310 and multiple set of cells 8.Multiple set of cells 8 load in the battery case shell 310 of battery case upper shell 1 and battery case lower house 2 composition.Battery case upper-lower casing 1,2 seals, and seals grade and reaches IP67, by arranging that in bandage groove 3 bandage realizes battery case upper-lower casing 1,2 and fixes.Heater 10 it is fixed with between set of cells 8 and lower house 2.Heater 10 includes adding hot jacket 101 (rigid material, see Fig. 6) and it is positioned over the heating cushion 103 added in hot jacket 101, heater 10 rat tail, drawing outside battery case shell 310 by line set 5 and line set 51 by wire harness, line set 5 and line set 51 are through the hole 501 on upper shells 1 and hole 502 (see Fig. 7).One jiao, lower house 2 bottom of battery case shell 310 has return port 61, and it is internal that the evaporative cooling liquid 11 of condensation cooling returns to battery case shell 310 by return port 61.Multiple set of cells 8 electrical connection after anode and cathode terminals 4 and terminal 41 integrated injection molding on upper shell 1.Battery management circuit plate (BMS from plate) 71 is contained in battery case shell 310, and the wire harness of battery management circuit plate (BMS from plate) 71 is drawn by hole 7.Upper shell 1 is provided with convergence plate 9, converges plate 9 and the steam of evaporative cooling liquid 11 can be converged, by the steam port 6 on upper shell 1, steam is drawn.Evaporative cooling liquid 11 fills in battery case shell 310, and the liquid level of evaporative cooling liquid 11 exceedes set of cells 8 highly about 2mm.Having muscle 91 converging design on plate 9, muscle 91 forms the passage 92 played steam guide flow effect.Add hot jacket 101 upper bottom surface 102 and have appropriate hole 105, add hot jacket bottom surface 103 with 102 upper bottom surfaces that add hot jacket in the middle of have riser 104, riser 104 improves and adds hot jacket intensity, it is provided that meets the intensity supporting set of cells 8, has appropriate hole 106 on riser 104.
Refer to shown in Figure 10, Figure 11, Figure 12, be the control schematic diagram of the schematic diagram of immersion type battery case temperature control system the second embodiment of the present invention, heat exchanger schematic diagram, immersion type battery case temperature control system the second embodiment respectively.
The immersion type battery case temperature control system of the present embodiment, including the battery case group 412 of composition behind multiple immersion type battery case 300 Electricity Federations, the first cooling pipeline, the second cooling pipeline, the 3rd cooling pipeline, temperature sensor 512,513, pressure transducer 514, gas concentration sensor 515,522 and temperature control unit 511.
Described immersion type battery case 300 is as described in the first two embodiment.
The first described cooling pipeline, initiating terminal connection immersion type battery case 300 steam outlet 6, the refluxing opening 61 of other end connection immersion type battery case 300, being provided with the first turbulence pump 415 and three-way valve 414 in first cooling pipeline, the b1 direction pipeline of three-way valve 414 is eventually connected to the refluxing opening 61 of immersion type battery case 300.
The second described cooling pipeline, initiating terminal connection immersion type battery case 300 steam outlet 6, the refluxing opening 61 of other end connection immersion type battery case 300, being provided with the first turbulence pump 415, three-way valve 414, the a1 direction pipeline of three-way valve 414, radiator the 413, second turbulence pump 402, three-way valve 403 in second cooling pipeline, the c direction pipeline of three-way valve 403 is eventually connected to the refluxing opening 61 of immersion type battery case 300.
The 3rd described cooling pipeline, it is separated branch road by the second three-way valve 403 lowering the temperature pipeline, in Figure 10, the b direction of three-way valve 403 separates branch road, and this branch road is communicated to the refluxing opening 61 of logical immersion type battery case 300 with the heat exchanger 404 (refrigeration) of air conditioner loop after thermally contacting.In Figure 10, compressor 402 is connected with condenser 407, condenser 407 is provided with fan 406 below, condenser 407 connects fluid reservoir 405, fluid reservoir 405 is connected with expansion valve 410, after expanded valve 410, pipeline UNICOM heat exchanger 404 (heat exchanger 404 is absorption refrigeration parts, has crew module's refrigeration and battery case group 412 coolant heat sinking function concurrently) forms complete air conditioner loop.Wherein radiator 413 and condenser 407 are arranged in vehicle front and lean on, natural wind cooling when vehicle travels.
Immersion type battery case is when normally using, battery-heating is normal, evaporative cooling liquid 11 steam is evaporated from battery case 300 phase transformation, through turbulence pump 415, entering three-way solenoid valve 414, now b1 direction is closed, coolant is through radiator 413 cooling liquid, entering three-way solenoid valve 403 then through turbulence pump 401, now b direction is closed, and evaporative cooling liquid flows back into battery case 300 through c direction and completes set of cells cooling.
Winter, battery started and charging exists potential safety hazard at low temperatures, and under low temperature, battery case group 412 available power is very low simultaneously.The immersion type battery case temperature control system of the present embodiment, also provide for monitor in real time pattern, vehicle is parked for a long time in the winter time, when battery temperature is lower than temperature first threshold (such as 10 DEG C), start heating function, when battery pack temperature reaches the second temperature threshold (such as 30 DEG C), then stop heating.Particularly, when battery temperature is lower than temperature the first temperature threshold, (such as 10 DEG C), battery case 300 bottom heating element 420 is energized, evaporative cooling liquid in battery case is heated.When in case, pressure change is little, evaporative cooling liquid is evaporated from battery case 300, enters three-way solenoid valve 414 through turbulence pump 415, and now a1 direction is closed, and the conducting of b1 direction makes coolant flow back into battery case group 412.
Immersion type battery case temperature control system, in evaporative cooling liquid sharply volatileness, such as battery abnormal heating, when battery thermal runaway, need efficient quick heat radiating, it is ensured that coolant turns the speed of gas and cyclostrophic liquid phase transition process at liquid, can be only achieved suppression thermal runaway purpose.Now relying solely on radiator 413 and cannot meet demand, the heat exchanger 404 of air-conditioning duct starts play a role (heat exchanger 404 is traditional A/C evaporator when not working herein)；The steam of (referring to Figure 11) evaporative cooling liquid walks a, b pipeline of threeway 403 through turbulence pump 401, enters through the coolant inlet 111 of heat exchanger 404, through outlet 112 outflow.The coolant of air conditioner loop enters through entrance 114, through outlet 115 outflow, the coolant coolant of air conditioner loop is become gaseous state from liquid in 116 in pipeline and absorbs big calorimetric, contacts with cooling line 117 through fin 113, evaporative cooling liquid circulates in pipeline 117, reaches the purpose of cooling.
Described temperature control unit (BMS) 511, by CAN line receiving sensor information, and transmits control command.Each battery case 300 is provided with temperature sensor 512,513；Between turbulence pump 415 and set of cells 412, it is provided with gas pressure sensor 514 and constant pressure valve 522 near set of cells 412 one end；Between radiator 413 and turbulence pump 401, it is provided with gas concentration sensor 515 near turbulence pump 401 one end.
Battery temperature T is fed back in temperature sensor 512,513, and gas pressure P in gas pressure sensor 514 feedback pipe, gas concentration sensor 515 feeds back vapour concentration μ.Three kinds of feedback states amounts, judge to adopt any cooling control model for system logic.In Figure 12, three-way solenoid valve 414 connection control signal line 519, turbulence pump 414 connects control wire size line 526, gas pressure sensor 514 connects holding wire 524, and temperature sensor 512 connects holding wire 520, and temperature sensor 513 connects holding wire 521, compressor 402 connection control signal line 516, turbulence pump 401 connection control signal line 517, gas concentration sensor 515 connects holding wire 523, three-way solenoid valve 403 connection control signal line 518.
The immersion type battery case temperature control system of the present embodiment, this temperature control unit (BMS) 511 controls the temperature of battery case according to the gas pressure P, the vapour concentration μ that receive and battery temperature T information.
1) when battery temperature T is less than the first temperature threshold (such as 10 DEG C), heater 10 and the first cooling pipeline are started；Namely, three-way magnetic valve 414 turns on b1 direction to first cooling pipeline, and vortex pump 415 starts；The steam of evaporative cooling liquid 11 arrives turbulence pump 415 by the road, enters three-way solenoid valve 414 through turbulence pump 415, returns battery case 300 through b1 direction.
2) when battery temperature T is be more than or equal to first threshold and less than Second Threshold (such as 30 DEG C), the first cooling pipeline (do not start or close heater 10) is started；That is, three-way magnetic valve 414 turns on b1 direction, and vortex pump 415 starts；The steam of evaporative cooling liquid 11 arrives turbulence pump 415 by the road, enters three-way solenoid valve 414 through turbulence pump 415, returns set of cells 300 through b1 direction.Cooling effect can also be further provided for according to the size of gas pressure P, for instance when gas pressure P is be more than or equal to the first pressure threshold P1 (during such as 2.5MPa) in pipeline, start the second cooling pipeline.
3) when battery temperature T is be more than or equal to the second temperature threshold and less than the 3rd threshold value (such as 40 DEG C), the second cooling pipeline is started；That is, three-way solenoid valve 414 turns on a1 direction, and three-way magnetic valve 403 turns on c direction, and vortex pump 401,415 starts；The steam of coolant 11 arrives turbulence pump 415 by the road, three-way solenoid valve 414 is entered through turbulence pump 415, radiator 413 cooling liquid is entered through a1 direction, turbulence pump 401 is arrived through radiator 413 coolant out, coolant 11 flows out from turbulence pump 401, returns battery case 300 through the c direction of three-way solenoid valve 403.Temperature control mode can also be adjusted according to vapour concentration μ, for instance, improve the power of vortex pump 401,415 when vapour concentration μ is higher than concentration threshold, or start the 3rd cooling pipeline and air conditioning system, forced refrigeration.
4) when battery temperature T is be more than or equal to the 3rd temperature threshold and less than the 4th temperature threshold (such as 45 DEG C), the 3rd cooling pipeline and air conditioning system is started；That is, three-way solenoid valve 414 turns on a1 direction, and three-way magnetic valve 403 turns on b direction, and air conditioning system starts one-level refrigeration.Temperature control mode can also be adjusted according to vapour concentration μ, for instance, improve the power of vortex pump 401,415 during according to vapour concentration μ higher than concentration threshold, or adjust the refrigerant level of air conditioning system according to vapour concentration μ.
5) when battery temperature T is be more than or equal to the 4th temperature threshold and less than the 5th temperature threshold (such as 60 DEG C), the 3rd cooling pipeline and air conditioning system is started；That is, three-way solenoid valve 414 turns on a1 direction, and three-way magnetic valve 403 turns on b direction, and air conditioning system opens two dynamic level refrigeration.Temperature control mode can also be adjusted according to vapour concentration μ, for instance, improve the power of vortex pump 401,415 during according to vapour concentration μ higher than concentration threshold, or adjust the refrigerant level of air conditioning system according to vapour concentration μ.
6) when battery temperature T is more than the 5th temperature threshold (such as 60 DEG C), the 3rd cooling pipeline and air conditioning system is started；That is, three-way solenoid valve 414 turns on a1 direction, and three-way magnetic valve 403 turns on b direction, and air conditioning system starts and freezes at full capacity, and vortex pump 401,415 starts pattern of operating at full capacity.Now, the steam of coolant 11 arrives turbulence pump 415 by the road, three-way solenoid valve 414 is entered through turbulence pump 415, entering radiator 413 cooling liquid through a1 direction, arrive turbulence pump 401 through radiator 413 coolant out, coolant 11 flows out from turbulence pump 401, three-way solenoid valve 403 turns on b direction, coolant 11 enters heat exchanger 404, and air conditioner loop starts limit refrigeration, and the coolant 11 flowed out through heat exchanger 404 returns battery case 300.
Temperature threshold described in the present embodiment, pressure threshold are only for example, and can be adjusted according to practical service environment in actually used.Such as the first temperature threshold can be monodrome 9.5 DEG C or 10 DEG C or 10.5 DEG C, it is also possible to be numerical intervals, such as 9 DEG C-11 DEG C.
The immersion type battery case temperature control system of the present embodiment, this temperature control unit (BMS) 511 determines whether abnormality, abnormal alarm according to the gas pressure P received and battery temperature T.Such as battery temperature T exceedes alarm temperature threshold value (such as 65 DEG C) alarm, and prompting is stopped using；Such as, battery temperature T is less than the first temperature threshold (such as 10 DEG C), but gas pressure P is more than alarm pressure threshold value P1(such as 2.5MPa) alarm, temp. indicator controls the system failure.
The vortex pump 401,415 of above-described embodiment can be frequency-changing cyclone pump, it is possible to adjust output according to gas pressure P, vapour concentration μ, reduces heat management energy expenditure.What adopt in the present embodiment is the vortex pump with one-level, two grades and three mode of operations of the limit, it is also possible to be multimodal vortex pump.
The immersion type battery case temperature control system of the present embodiment, it is preferred to, each battery case 300 keeps basically identical to pipeline diameter and the pipe range of vortex pump 415, refluxes the caliber of each battery case 300 from vortex pump 401 and pipe range keeps basically identical.Can ensure that in each battery case 300, pressure is balanced.
Thermo-contact in the present invention is broadly understood, including physical contact, thermal convection current contact, heat radiation contact etc..
The immersion type battery case temperature control system of the present invention, it is possible to Personalized air conditioning loop, reducing totally-enclosed battery case is that steam condenses the waste spatially caused.
Although the present invention is disclosed above with preferred embodiment, being so not limited to scope of the invention process, the simple equivalence made according to claims and the description of the present invention changes and modifies, and still falls within the scope of technical solution of the present invention.
Claims (10)
1. an immersion type battery case temperature control system, it is characterised in that comprising:
At least one immersion type battery case, this immersion type battery case includes: battery case shell, has the first accommodation space；Multiple set of cells, are contained in this first accommodation space, electrically connect and extend positive and negative electrode outside this battery case shell backward between the plurality of set of cells；Electric insulation, the evaporative cooling liquid that non-combustible and boiling point is lower than 65 DEG C, this evaporative cooling liquid flows in this first accommodation space, partly or entirely soaks the height of this set of cells, has space between the upper side wall of the liquid level of this evaporative cooling liquid and this battery case shell；And, heater, be arranged within this battery case shell or outside, and thermally contact with this evaporative cooling liquid；Wherein, the top of this battery case shell is provided with the steam outlet discharging this evaporative cooling liquid by thermogenetic steam, the refluxing opening that this battery case shell refluxes after being additionally provided with the steam condensation cooling of this evaporative cooling liquid；
First cooling pipeline, one end connects with this steam outlet, and the other end connects with this refluxing opening, is provided with the first turbulence pump in this first cooling pipeline；
Second cooling pipeline, one end connects with this steam outlet, and the other end connects with this refluxing opening, is provided with condenser and the second turbulence pump in this second cooling pipeline；
3rd cooling pipeline, is gone out heat exchange manifolds road by parallel connection in this second cooling pipeline, and this heat exchange manifolds road contacts with the exchanger heat in air conditioner loop；
Temperature sensor, is arranged at this battery pack side of this immersion type battery case, detects the temperature of this set of cells；And
Temperature control unit, receives the temperature signal of this set of cells that this temperature sensor sends, and controls startup and the closedown of this first cooling loop, the second cooling loop, the 3rd cooling loop or heater.
2. immersion type battery case temperature control system as claimed in claim 1, it is characterised in that wherein said evaporative cooling liquid is six carbon fluoro ketones.
3. immersion type battery case temperature control system as claimed in claim 1, it is characterised in that wherein said temperature control unit, when the temperature of this set of cells is lower than first threshold, starts this heater and/or this first cooling pipeline；The temperature of this set of cells between first threshold and Second Threshold time, start this first cooling pipeline so that the steam of this evaporative cooling liquid via this first cooling pipeline condensation cooling after be back to this immersion type battery case；The temperature of this set of cells between Second Threshold and three threshold values time, start this second cooling pipeline so that the steam of this evaporative cooling liquid via this second cooling pipeline condensation cooling after be back to this immersion type battery case；When the temperature of this set of cells is more than three threshold values, start the 3rd cooling pipeline and this air conditioner loop so that the steam of this evaporative cooling liquid is lowered the temperature after pipeline condensation is lowered the temperature via the 3rd and is back to this immersion type battery case.
4. immersion type battery case temperature control system as claimed in claim 3, when it is characterized in that the temperature of this wherein said set of cells more than three threshold values, the cooling rank of this air conditioner loop is adjusted in the temperature of this set of cells: when the temperature of described set of cells is more than the 3rd threshold value and less than four threshold values, this air conditioner loop starts first order refrigeration with this；When the temperature of this set of cells is more than the 4th threshold value and less than five threshold values, this air conditioner loop starts second level refrigeration；When the temperature of this set of cells is more than five threshold values, this air conditioner loop starts third level refrigeration.
5. immersion type battery case temperature control system as claimed in claim 1, it is characterised in that it also includes pressure transducer and concentration sensor, and this pressure transducer is arranged in this cooling pipeline, detects the pressure in this cooling pipeline；This concentration sensor, is arranged in this cooling pipeline, detects the concentration of this steam；This pressure transducer and this concentration sensor are connected with this temperature control unit signal respectively.
6. immersion type battery case temperature control system as claimed in claim 5, the described wherein temperature control unit of its feature is according to this temperature, this pressure and/or this concentration, control startup and closedown, warning when controlling abnormal of this first cooling loop, the second cooling loop, the 3rd cooling loop or heater.
7. an immersion type battery case temperature control system, it is characterised in that comprising:
At least one immersion type battery case, this immersion type battery case includes: battery case shell, has the first accommodation space；Multiple set of cells, are contained in this first accommodation space, electrically connect and extend positive and negative electrode outside this battery case shell backward between the plurality of set of cells；Electric insulation, the evaporative cooling liquid that non-combustible and boiling point is lower than 65 DEG C, this evaporative cooling liquid flows in this first accommodation space, partly or entirely soaks this set of cells, has space between the upper side wall of the liquid level of this evaporative cooling liquid and this battery case shell；And heater, be arranged within this battery case shell or outside, and thermally contact with this evaporative cooling liquid；Wherein, the top of this battery case shell is provided with the steam outlet discharging this evaporative cooling liquid by thermogenetic steam, the refluxing opening that this battery case shell refluxes after being additionally provided with the steam condensation cooling of this evaporative cooling liquid；
Cooling pipeline, one end connects with this steam outlet, and the other end connects with this refluxing opening, is provided with turbulence pump in this cooling pipeline；
Multiple temperature reducing unit, thermally contact with the different parts of this cooling pipeline respectively；
Temperature sensor, is arranged at this battery pack side of this immersion type battery case, detects the temperature of this set of cells；And
Temperature control unit, receives the temperature signal of this set of cells that this temperature sensor sends, controls the work of the plurality of temperature reducing unit or heater.
8. immersion type battery case temperature control system as claimed in claim 7, it is characterised in that wherein said multiple temperature reducing unit are the first fan, the second fan, the first refrigeration section, the second refrigeration section and the 3rd refrigeration section respectively.
9. immersion type battery case temperature control system as claimed in claim 7, it is characterised in that wherein said multiple temperature reducing unit are one or more combinations in fan cooling portion, electronic cooling portion, air conditioning system cooling end.
10. immersion type battery case temperature control system as claimed in claim 7, it is characterised in that wherein said temperature control unit, the temperature in this set of cells reaches predetermined threshold alarm.
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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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| CN201410790500.XA CN105762437B (en) | 2014-12-17 | 2014-12-17 | Immersion type battery box temperature control system |
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| CN105762437A true CN105762437A (en) | 2016-07-13 |
| CN105762437B CN105762437B (en) | 2019-04-02 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN108232361A (en) * | 2017-12-28 | 2018-06-29 | 曙光节能技术（北京）股份有限公司 | A kind of cooling system of power battery pack and the cooling system of power battery |
| CN108550948A (en) * | 2018-04-16 | 2018-09-18 | 河南科技大学 | A kind of cold heat binary cycle system for power battery pack heat management |
| WO2019155179A1 (en) * | 2018-02-12 | 2019-08-15 | Valeo Systemes Thermiques | Cooling device for at least one motor vehicle battery |
| EP3726614A1 (en) * | 2019-04-16 | 2020-10-21 | Xing Power Inc. | Battery system with management module |
| CN112238752A (en) * | 2020-09-04 | 2021-01-19 | 东风时代(武汉)电池***有限公司 | Passive detection and protection system and method for thermal runaway of battery pack |
| EP3644432A4 (en) * | 2017-12-26 | 2021-01-27 | Sugon Dataenergy (Beijing) Co., Ltd | Immersion cooling device for power battery |
| CN113647204A (en) * | 2018-11-16 | 2021-11-12 | Tmg科尔有限责任公司 | Liquid immersion cooling platform |
| CN113764755A (en) * | 2021-08-03 | 2021-12-07 | 苏州热工研究院有限公司 | Forced circulation cooling heat dissipation device of energy storage lithium battery pack and installation control method thereof |
| CN113764774A (en) * | 2021-09-09 | 2021-12-07 | 东莞新能安科技有限公司 | Heat dissipation box, battery pack system and consumer |
| 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 |
| CN114313297A (en) * | 2021-12-16 | 2022-04-12 | 深圳黑砂科技有限公司 | Air conditioner control method for automatic airport of unmanned aerial vehicle |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| EP3644432A4 (en) * | 2017-12-26 | 2021-01-27 | Sugon Dataenergy (Beijing) Co., Ltd | Immersion cooling device for power battery |
| CN108232361A (en) * | 2017-12-28 | 2018-06-29 | 曙光节能技术（北京）股份有限公司 | A kind of cooling system of power battery pack and the cooling system of 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 |
| CN108550948A (en) * | 2018-04-16 | 2018-09-18 | 河南科技大学 | A kind of cold heat binary cycle system for power battery pack heat management |
| CN113647204A (en) * | 2018-11-16 | 2021-11-12 | Tmg科尔有限责任公司 | Liquid immersion cooling platform |
| EP3726614A1 (en) * | 2019-04-16 | 2020-10-21 | Xing Power Inc. | Battery system with management module |
| CN112238752A (en) * | 2020-09-04 | 2021-01-19 | 东风时代(武汉)电池***有限公司 | Passive detection and protection system and method for thermal runaway of battery pack |
| CN113764755A (en) * | 2021-08-03 | 2021-12-07 | 苏州热工研究院有限公司 | Forced circulation cooling heat dissipation device of energy storage lithium battery pack and installation control method 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 |
| CN113764774A (en) * | 2021-09-09 | 2021-12-07 | 东莞新能安科技有限公司 | Heat dissipation box, battery pack system and consumer |
| 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 |
| CN114313297A (en) * | 2021-12-16 | 2022-04-12 | 深圳黑砂科技有限公司 | Air conditioner control method for automatic airport of unmanned aerial vehicle |
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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 |
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