CN204857901U - Power battery thermal management system - Google Patents

Power battery thermal management system Download PDF

Info

Publication number
CN204857901U
CN204857901U CN201520643181.XU CN201520643181U CN204857901U CN 204857901 U CN204857901 U CN 204857901U CN 201520643181 U CN201520643181 U CN 201520643181U CN 204857901 U CN204857901 U CN 204857901U
Authority
CN
China
Prior art keywords
fuel
displaced
outer tube
oil groove
flowline
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201520643181.XU
Other languages
Chinese (zh)
Inventor
常成
宋传学
宋世欣
李少坤
王达
肖峰
李潇雄
于建新
刘旭东
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jilin University
Original Assignee
Jilin University
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Jilin University filed Critical Jilin University
Priority to CN201520643181.XU priority Critical patent/CN204857901U/en
Application granted granted Critical
Publication of CN204857901U publication Critical patent/CN204857901U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries

Abstract

The utility model discloses a power battery thermal management system, include: battery box, the main oil pipe of advancing, owner go out oil pipe, first oil pipe, temperature sensor and outside circulation system. The owner is provided with main oil -feed tank on advancing oil pipe, has seted up main oil outlet groove on the main oil pipe, and main oil outlet groove's width can be adjusted. Be provided with an oil outlet groove on first the oil pipe, an oil outlet groove's position can be for first oil pipe length direction adjustable. The coolant liquid is passed through oil outlet groove and is got into the interior and group battery heat transfer of battery box to according to temperature sensor measurement's temperature value, adjust oil outlet groove's width and an oil outlet groove's position, make the coolant liquid from main oil outlet groove and oil outlet groove outflow, with the flow of increase location coolant liquid. The utility model discloses can guarantee that group battery work is in the temperature range of ideal to guarantee that each monomer temperature difference within a definite time is in norm of an ideal encloses.

Description

A kind of power battery thermal management system
Technical field
The utility model relates to electrokinetic cell technical field of heat exchange, particularly a kind of power battery thermal management system.
Background technology
Due to new-energy automobile, to have environmental pollution little, the advantages such as the energy used is renewable, now one of Main way becoming automobile industry development.And electric automobile is as the one in new-energy automobile principal mode, more and more receive the concern of people at present.Different from orthodox car, electric automobile is using electrokinetic cell as energy source.Therefore, the quality of electrokinetic cell directly concerns the performance of electric automobile.Different according to the reaction principle of electrokinetic cell, lead-acid battery, Ni-MH battery, lithium ion battery etc. can be divided into.No matter which kind of battery, all requires to be operated within certain temperature range.For power lithium-ion battery, its working range is at-20 DEG C ~ 60 DEG C.When the operating ambient temperature of lithium ion battery is lower than-20 DEG C, internal resistance of cell increase, the rapid step-down of discharging efficiency can be caused and be difficult to problems such as charging normal.When the operating ambient temperature of lithium ion battery is higher than 60 DEG C, the chemical reaction rate of its inside will improve rapidly, and temperature can continue significantly to raise.High temperature easily causes pole plate to damage, and will have a strong impact on the useful life of battery.When temperature continues to raise, the dangerous situations such as on fire, blast even will be there is.When battery works in groups, temperature is more obvious on the impact of battery.Power battery pack is owing to arranging closely, and compact conformation, the battery cell radiating effect being in internal battery pack can be caused bad, and the heat history of generation constantly increases, and equally the danger such as high temperature blast can occur.In addition, the position residing for battery in battery pack monomer is different, and radiating effect also can there are differences.If zones of different is battery operated in different temperature ranges, then can cause the performance difference between battery cell, will the decline of integral battery door group serviceability be caused.Different temperature contrasts can make each battery cell charge/discharge capacity different, and this is by the decline of the decline and electric automobile course continuation mileage that cause battery pack bulk life time.Therefore need introduce battery pack thermal management system can improve battery pack work time ambient temperature.
Utility model content
The purpose of this utility model is the unbalanced defect of temperature between battery cell when to overcome in prior art battery pack heating or cooling, provide a kind of power battery thermal management system, while cooling or heating, ensure the harmony of temperature between battery cell, improve the serviceability of battery pack.
The technical scheme that the utility model provides is:
A kind of power battery thermal management system, comprising:
Battery case, is placed with battery pack in it;
Main oil inlet pipe, it is arranged at the first side in described battery case, and described main oil inlet pipe sidewall offers main oil-feed tank along its length;
Main flowline, it is arranged at the second side in described battery case, and described second side is parallel with the first side, and described main flowline sidewall offers along its length master and go out oil groove, the A/F that described master goes out oil groove can regulate; And
First flowline, it is arranged at the second side in described battery case, described first flowline sidewall is provided with first and goes out oil groove, and the described first position going out oil groove can regulate along the first flowline length direction change;
Temperature sensor, it is arranged in battery case, for detecting the temperature in battery case;
External circulating system, it is for the circulation of cooling fluid;
Wherein, cooling fluid by the main oil-feed tank of main oil inlet pipe enter in battery case with battery pack heat exchange, and according to the temperature value of temperature sensor measurement, the A/F and first regulating master to go out oil groove goes out the position of oil groove, make cooling fluid from main go out oil groove and the first fuel-displaced concentrated flow go out, to increase the flow of its corresponding region cooling fluid.
Preferably, also comprise:
Second flowline, it is arranged at the 3rd side in described battery case, described second flowline sidewall is provided with second and goes out oil groove, and the described second position going out oil groove can along the second flowline length direction left and right adjusting;
3rd flowline, it is arranged at the 4th side in described battery case, described 3rd flowline sidewall is provided with the 3rd and goes out oil groove, and the described 3rd position going out oil groove can along the 3rd flowline length direction left and right adjusting.
Wherein, described 3rd side is parallel with the 4th side, and described 3rd side is perpendicular to described first side.
Preferably, described main flowline comprises main fuel-displaced outer tube and main fuel-displaced interior pipe, the fuel-displaced outer tube sleeve of described master is located at outside main fuel-displaced interior pipe, the fuel-displaced outer tube of described master is provided with outer tube and goes out oil groove, the fuel-displaced interior pipe of described master is provided with interior pipe and goes out oil groove, outer tube goes out oil groove and the fuel-displaced groove of interior pipe and forms described master and go out oil groove; The fuel-displaced interior pipe of described master can rotate relative to the fuel-displaced outer tube of described master, makes master go out oil groove aperture maximum when outer tube goes out oil groove and interior pipe goes out oil groove coincidence, goes out oil groove aperture and reduce or close described in the fuel-displaced interior pipe rotation of described master can make.
Preferably, described first flowline comprises the first fuel-displaced interior pipe and the first fuel-displaced outer tube, described first fuel-displaced outer tube sleeve is located at outside the first fuel-displaced interior pipe, and described first fuel-displaced outer tube wall is provided with outer tube slot, and described outer tube slot is arranged along described first fuel-displaced outer tube length direction; Described first fuel-displaced interior pipe sidewall is provided with interior tube seat, described interior tube seat is arranged on the first fuel-displaced interior pipe in the shape of a spiral, the winding angle of spiral is less than 360 °, described first fuel-displaced outer tube is fixedly connected with battery case, described first fuel-displaced interior pipe can rotate relative to the first fuel-displaced outer tube, the described outer tube slot composition first that matches with interior tube seat goes out oil groove, can change the position that first goes out oil groove after described first fuel-displaced interior pipe rotates.
Preferably, described interior in the shape of a spiral tube seat spiral winding angle is 270 °.
Preferably, can be on average divided into m × n cuboid region in described battery case, described temperature sensor is arranged at the center in each region, and wherein, m, n are the integer being more than or equal to 2.
Preferably, described external circulating system comprises:
Oil storage cylinder, it is for storing cooling fluid;
Circulating pump, it is connected with described oil storage cylinder and main oil inlet pipe, for the circulation of described cooling fluid provides power; And
Heater, it is for heating cooling fluid;
Radiator, it is for cooling cooling fluid;
Wherein, described cooling fluid adopts transformer oil.
Preferably, described second flowline comprises the second fuel-displaced interior pipe and the second fuel-displaced outer tube, described second fuel-displaced outer tube sleeve is located at outside the second fuel-displaced interior pipe, and described second fuel-displaced outer tube wall is provided with outer tube slot, and described outer tube slot is arranged along described second fuel-displaced outer tube length direction; Described second fuel-displaced interior pipe sidewall is provided with interior tube seat, described interior tube seat is arranged on the second fuel-displaced interior pipe in the shape of a spiral, the winding angle of spiral is less than 360 °, described second fuel-displaced outer tube is fixedly connected with battery case, described second fuel-displaced interior pipe can rotate relative to the second fuel-displaced outer tube, the described outer tube slot composition second that matches with interior tube seat goes out oil groove, can change the position that second goes out oil groove after described second fuel-displaced interior pipe rotates;
Described 3rd flowline comprises the 3rd fuel-displaced interior pipe and the 3rd fuel-displaced outer tube, described 3rd fuel-displaced outer tube sleeve is located at outside the 3rd fuel-displaced interior pipe, described 3rd fuel-displaced outer tube wall is provided with outer tube slot, and described outer tube slot is arranged along described 3rd fuel-displaced outer tube length direction; Described 3rd fuel-displaced interior pipe sidewall is provided with interior tube seat, described interior tube seat is arranged on the 3rd fuel-displaced interior pipe in the shape of a spiral, the winding angle of spiral is less than 360 °, described 3rd fuel-displaced outer tube is fixedly connected with battery case, described 3rd fuel-displaced interior pipe can rotate relative to the 3rd fuel-displaced outer tube, the described outer tube slot composition the 3rd that matches with interior tube seat goes out oil groove, can change the position that the 3rd goes out oil groove after described 3rd fuel-displaced interior pipe rotates.
Preferably, described main oil inlet pipe, main flowline, the first flowline, the second flowline, the 3rd flowline all adopt silicon nitride material to make.
The beneficial effects of the utility model are: the power battery thermal management system that the utility model provides and control method, can ensure that battery pack is operated in desirable temperature range, can heat to battery pack when low temperature, can dispel the heat to battery pack rapidly when high temperature, and ensure that temperature contrast in battery pack between each monomer is in the preferred range, avoids service behaviour difference between individuality excessive.Whole battery pack thermal management system compact conformation, lightweight, be easy to care and maintenance, fully promote battery pack serviceability, improve the useful life of battery pack.
Accompanying drawing explanation
Fig. 1 is power battery thermal management system general structure schematic diagram described in the utility model.
Fig. 2 is battery case internal structure exploded view described in the utility model.
Fig. 3 is main oil inlet pipe structural representation described in the utility model.
Fig. 4 is main oil inlet pipe cutaway view described in the utility model.
Fig. 5 is main flowline decomposition view described in the utility model.
Fig. 6 is main flowline cutaway view described in the utility model.
Fig. 7 is the first flowline decomposition view described in the utility model.
Fig. 8 is power battery thermal management system course of work flow chart described in the utility model.
Fig. 9 is that in cooling balanced mode described in the utility model, line number is odd number and lowest temperature respectively goes out oil groove positions schematic diagram when middle row.
Figure 10 is that in cooling balanced mode described in the utility model, line number is odd number and lowest temperature respectively goes out oil groove positions schematic diagram when region on the upper side.
Figure 11 is that in cooling balanced mode described in the utility model, line number is odd number and lowest temperature respectively goes out oil groove positions schematic diagram when region on the lower side.
Figure 12 respectively goes out oil groove positions schematic diagram when line number is even number in cooling balanced mode described in the utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail, can implements according to this with reference to specification word to make those skilled in the art.
As shown in Figure 1, the utility model provides a kind of power battery thermal management system, comprises battery case 110, main oil inlet pipe 120, main flowline 130, first flowline 140, temperature sensor 150 and external circulating system.
Consult Fig. 2 in the lump, battery case 110 is in rectangular shape, battery case 110 keeps airtight, be placed with in battery case 110 and carry out connection in series-parallel by some batteries monomers 111 by wire and the battery pack formed, keep identical distance between each battery cell 111, be evenly arranged in battery case 110.Battery cell 111 is in cylindric, and the axis of battery cell 111 and horizontal plane, battery pack external cabling terminal is in lower plane.
Consult Fig. 3 in the lump, in battery case 110 inside, main oil inlet pipe 120 is installed, it is a linear pipe of elongated straight, and described main oil inlet pipe 120 is between the right sidewall and battery pack of battery case 110, and the axis of main oil inlet pipe 120 is parallel with the right flank of battery case 110.One end of main oil inlet pipe 120 is closed, and the other end is set to oil-in, and it is connected with external circulating system, and cooling fluid is transported in main oil inlet pipe 120 by external circulating system.The sidewall of main oil inlet pipe 120 is provided with main oil-feed tank 121, and as shown in Figure 4, described main oil-feed tank 121 is one and is 60 degree of central angles with the main oil inlet pipe 120 end face center of circle and along the elongated slot of main oil inlet pipe 120 axial direction.Through main oil inlet pipe 120 axis and the plane vertical with battery case right side is the plane of symmetry of main oil-feed tank 121.The length of main oil-feed tank 121 is more than or equal to the length of battery pack right edge outline, the cooling fluid entered in main oil inlet pipe 120 flows out from main oil-feed tank 121, enter into battery case 110, the flow direction of cooling fluid is horizontal right-to-left, the exterior surface of cooling fluid and battery cell 111, carries out heat exchange.
The left side of battery case 110 inside is provided with main flowline 130, and between its left side sidewall at battery case 110 and battery pack, and the axis of main flowline 130 is parallel with the left surface of battery case 110.As shown in Figure 5, described main flowline 130 comprises main fuel-displaced outer tube 131 and main fuel-displaced interior pipe 132, and described master fuel-displaced outer tube 131 concentric locking collar is combined in the outside of main fuel-displaced interior pipe 132, coaxially can relatively rotate, form a pair sealing friction pair between two pipes.The two ends of main fuel-displaced outer tube 131 are fixed on the tank wall of battery case 110 front and back end, and main fuel-displaced outer tube 131 top is provided with oil-out, and is connected with external circulating system, the bottom end seal of main fuel-displaced outer tube 131.Distance between main fuel-displaced interior pipe 132 length and the inner side plane of battery case 110 front and back end tank wall is equal, because main fuel-displaced outer tube 131 will reach outside battery case 110, and the therefore length of a main fuel-displaced outer tube 131 length joint longer than main fuel-displaced interior pipe 132.The fuel-displaced outer tube 131 of described master is provided with outer tube and goes out oil groove 133, the fuel-displaced interior pipe 132 of described master is provided with interior pipe and goes out oil groove 134, the fuel-displaced groove of its middle external tube 133 is one and be 60 ° of central angles with the main center of circle, fuel-displaced outer tube 131 end and along the elongated slot of main fuel-displaced outer tube 131 axial direction, and interior pipe goes out oil groove 134 and is one and is 60 degree of central angles and the elongated slot of fuel-displaced interior pipe 132 axial direction of edge master with the main center of circle, fuel-displaced interior pipe 132 end.Main fuel-displaced interior pipe 132 is driven by motor 135 and realizes rotating relative to main fuel-displaced outer tube 131.The setting angle of main fuel-displaced outer tube 131 should ensure, through main fuel-displaced outer tube 131 axis and the plane vertical with battery case 110 left side is the plane of symmetry that outer tube goes out oil groove 133.It is relative with battery pack outline left end sideline that outer tube goes out oil groove 133, and the length that outer tube goes out oil groove 133 is more than or equal to the length in battery pack outline left end sideline.As shown in Figure 6, main fuel-displaced interior pipe 132 rotates relative to main fuel-displaced outer tube 131 under the drive of motor 135, thus make outer tube go out oil groove 133 and interior pipe to go out oil groove 134 angle that overlaps and change, and then change to go out oil groove 133 and interior pipe by outer tube and go out the width that master that oil groove 134 forms goes out oil groove, even can main go out oil groove close.
Immediately below main flowline 130, be provided with the first flowline 140, itself and main flowline 130 are arranged in same perpendicular, and the length of the first flowline 140 is equal with the length of main flowline 130.As shown in Figure 7, described first flowline 140 comprises the first fuel-displaced outer tube 141 and the first fuel-displaced interior pipe 142, described first fuel-displaced outer tube 141 concentric locking collar is combined in outside the first fuel-displaced interior 142 pipes, first fuel-displaced outer tube 141 sidewall is provided with the first outer tube slot 143, described first outer tube slot 143 is one and is 60 degree of central angles with first center of circle, fuel-displaced outer tube 141 end and along the elongated straight trough of the first fuel-displaced outer tube 141 axial direction, and the length of the first outer tube slot 143 is more than or equal to the length in battery pack outline left end sideline.Described first fuel-displaced interior pipe 142 sidewall is provided with tube seat 144 in first, in described first, tube seat 144 is spirally wrapped around on the first fuel-displaced interior pipe 142 sidewall, in this helical form first, the height of the spiral guide line of tube seat 144 is equal with the length of the first outer tube slot 143, the anglec of rotation of spiral guide line is less than 360 degree, and the number of turns be namely wound around is less than a circle.Preferred as one, the anglec of rotation of spiral guide line is 270 °.In first, the width of tube seat 144 is equal with the width of the first outer tube slot 143.In first, tube seat 144 and the first outer tube slot 143 match, jointly constitute first and go out oil groove, first fuel-displaced interior pipe 142 rotates relative to the first fuel-displaced outer tube 141 under the drive of motor 135, make to be changed by tube seat 144 in first and the first outer tube slot 143 the first position going out oil groove formed of matching, it can move forward and backward along the axis direction of the first flowline 140.Because the anglec of rotation of the spiral guide line of tube seat 144 in first is less than 360 °, therefore first goes out oil groove and can be fully closed.
In battery case 110, be provided with many group temperature sensors 150, it is for measuring the temperature in battery case 110.
By above-mentioned setting, when temperature sensor measurement goes out the temperature anomaly in a certain region in battery case 110, power battery thermal management system is started working, cooling fluid is transported in main oil inlet pipe 120 by external circulating system, and cooling fluid enters into battery case 110 from main oil-feed tank 121 and carries out heat exchange with battery pack.The width simultaneously master on main flowline 130 being gone out oil groove reduces, and the first position going out oil groove on the first flowline 140 is adjusted to the position in relative left side, this region, thus cross-current is increased through the flow of the cooling fluid in this region, to strengthen heat transfer effect, the temperature making this region rapidly and the temperatures approach of peripheral region, finally reach the temperature equalization of whole battery pack, improve the life-span of battery pack.
In another is implemented, described power battery thermal management system also comprises the second flowline 160 and the 3rd flowline 170, and described second flowline 160 is identical with the structure of the first flowline 140 with the structure of the 3rd flowline 170.Between the rear wall that second flowline 160 is installed on battery case 110 and battery pack, horizontal cross is arranged, the on the second flowline 160 second position going out oil groove can move left and right relative to the axis of the second flowline 160.Between the front side wall that 3rd flowline 170 is installed on battery case 110 and battery pack, horizontal cross is arranged, the on the 3rd flowline 170 the 3rd position going out oil groove can move left and right relative to the axis of the 3rd flowline 170.Going out by regulating second the position that oil groove and the 3rd goes out oil groove, longitudinal stream can be made to increase, to strengthen heat transfer effect through the flow of the cooling fluid in certain region.
In technique scheme, described main oil inlet pipe 120, main flowline 130, first flowline 140, second flowline 160, the 3rd flowline 170 all adopt silicon nitride material to make, this material belongs to new ceramics, have that intensity is high, coefficient of friction is low, have certain self lubricity and not with the feature of cooling fluid generation chemical reaction.
In another embodiment, described external circulating system comprises: liquid storage cylinder 181, circulating pump 182, heater 183 and radiator 184.Liquid storage cylinder 181 is for storing cooling fluid.Preferred as one, described cooling fluid adopts transformer oil, and this cooling fluid has the advantages such as insulation effect is good, modest viscosity, good heat conductivity and solidifying point are low, is applicable to the heat exchange of battery pack in the utility model.Circulating pump 182 is connected with described liquid storage cylinder 181 and main oil inlet pipe 120, for the circulation of cooling fluid provides power.Heater 183 and radiator 184 parallel connection, valve 185 is separately installed with in the front end of heater 183 and radiator 184, by switching the operating state of these two valves 185, the cooling fluid cooling of optionally port of export from main flowline 130, first flowline 140, second flowline 160 and the 3rd flowline 170 being flowed out or heating.Preferred as one, described circulating pump 182 adopts gear pump, and this pump is the one of positive displacement pump.Therefore, when ignoring a small amount of fluid and revealing, its flow exported is directly proportional to rotating speed.
In another embodiment, described temperature sensor 150 is provided with m × n, and can be on average divided into m × n cuboid region in described battery case 110, described temperature sensor 150 is arranged at the center in each region, and wherein, m, n are the integer being more than or equal to 2.
As shown in Figure 8, the process that the power battery thermal management system using the utility model to provide carries out electrokinetic cell heat management is as follows:
S110: the temperature of each measurement point in battery line 110 measured by serviceability temperature transducer 150.
M × n equal-sized cuboid region can be divided at battery pack arrange regional, be furnished with temperature sensor, to measure the temperature value at this place in the center in the capable n row of this m cuboid region.The temperature value setting the temperature sensor measurement of the i-th row jth row is T ij.The running status of power battery thermal management system is controlled according to the measured value of temperature sensor.The operating temperature range of electrokinetic cell is at-20 DEG C ~ 60 DEG C.When the operating ambient temperature of battery is lower than-20 DEG C, internal resistance of cell increase, the rapid step-down of discharging efficiency can be caused, be difficult to problems such as charging normal.When the operating ambient temperature of battery is higher than 60 DEG C, the chemical reaction rate of its inside will improve rapidly, and temperature can continue significantly to raise.The optimum working temperature of battery is 20 DEG C ~ 40 DEG C, and in this temperature range, battery has good charge-discharge performance, and is conducive to the useful life of improving battery, the therefore minimum operating temperature T of battery 1=20 DEG C, maximum operating temperature T 2=40 DEG C.
In an initial condition, the master of fuel-displaced supervisor 130 goes out oil groove 136 aperture to maximum, and on the first flowline 140, second flowline 160 and the 3rd flowline 170 first goes out oil groove 145, second goes out oil groove 161 and the 3rd and go out oil groove 171 and be all in closed condition.
Judge that power battery thermal management system is in cool cycles pattern or heat cycles pattern.
According to the temperature value that temperature sensor measurement goes out, calculate mean temperature
T ‾ = Σ j = 1 n ( Σ i = 1 m T i j ) m × n
S210: as the minimum temperature T of temperature sensor measurement min≤ T 1, and time, make power battery thermal management system enter heat cycles pattern, until time exit heat cycles pattern.
Δ T is temperature increment, preferred as one, setting Δ T=5 DEG C.Namely as minimum temperature T minbe less than or equal to 20 DEG C, simultaneously mean temperature when being less than or equal to 25 DEG C, power battery thermal management system enters heat cycles pattern, heats battery, until mean temperature when being more than or equal to 30 DEG C, exit heat cycles pattern.
S220: when entering heat cycles pattern, closes the valve 185 of radiator 184 front end, opens the valve 185 of heater 183 front end, allow cooling fluid flow through heater 183, the temperature of cooling fluid is raised, and then heats battery.Circulating pump 182 is opened, and drives cooling fluid to enter in battery case 110 from main oil inlet pipe 120 and carries out heat exchange with battery.Heat exchange terminates rear cooling fluid and goes out oil groove 136 from the master main flowline 130 and flow out battery case 110.What wherein circulating pump 182 adopted is gear pump, its rotating speed and mean temperature proportional, and rotating speed v meets following relation:
v = v m a x · a r c t a n ( T ‾ - T 1 - Δ T )
Wherein, v maxfor the maximum (top) speed of circulating pump 182.
S230: in heat cycles pattern, also needs to judge temperature equalization situation, and temperature equalization degree ε calculates by following formula:
ϵ = T ‾ - T min T ‾ .
When temperature equalization Du ε≤0.2, then enter heating balanced mode.
S240: in heating balanced mode, first need the position judging minimum temperature point.Here need to do two kinds of supposed situations, a kind of hypothesis is the region line number m that battery pack is divided is even number, and it is odd number that another kind is assumed to be m.
First suppose that m is odd number, makes m=5, n=8.As shown in Figure 9, if the region that temperature is minimum appears at middle row, when namely appearing at the 3rd row, the aperture now master on main flowline 130 being gone out oil groove 136 reduces, open first on the first flowline 140 simultaneously and go out oil groove 145, and the position making first to go out position alignment the 3rd row of oil groove 145.Now, the aperture going out oil groove 136 due to master reduces, and occurred that at the 3rd row place first goes out oil groove 145, part cooling fluid can go out oil groove 145 from first and flow out, and then the 3rd the flow of row place cooling fluid can increase, the effect of heat exchange is also better, can make the temperature minimum point rapid temperature increases being in the 3rd row place, to reach the equilibrium of temperature.If the region that temperature is minimum does not appear at middle row, now except go out this row of position alignment of oil groove 145 by first except, also need to go out oil groove 161 or the 3rd by second and go out the row that this place, region aimed at by oil groove 171.Concrete, as shown in Figure 10, arrange when the region that temperature is minimum appears at the 2nd row the 3rd, because the second flowline 160 is nearer apart from the 2nd row, therefore second on the second flowline 160 is gone out oil groove 161 to open and position alignment the 3rd row going out oil groove 161 by second, go out position alignment the 2nd row of oil groove 145 by first, now flow through the flow of the cooling fluid that the 2nd row the 3rd arranges, larger than the flow in other regions, be conducive to the equilibrium of temperature.As shown in figure 11, when the region that temperature is minimum appear at the 5th row the 6th arrange time, then the position alignment the 6th going out oil groove 171 by the 3rd arranges, the first position alignment the 5th row going out oil groove 145.
When m is even number, owing to there is not middle row, therefore, going out oil groove 161 and the 3rd second goes out in oil groove 171 to need the oil groove that goes out by closer to the minimum region place of temperature to open, and as shown in figure 12, works as m=4, during n=8, the region that temperature is minimum is in the 3rd row the 5th and arranges, and the position alignment the 5th now needing to go out the 3rd oil groove 171 arranges, the first position alignment the 3rd row going out oil groove 145.
In heating balanced mode, the aperture θ and the temperature equalization degree ε that lead oil groove 136 meet following relation:
θ＝a (ε-0.2)，
Wherein, constant a=0.5.
S310: as the maximum temperature T of temperature sensor measurement max>=T 2, and time, make power battery thermal management system enter cool cycles pattern, until time exit cool cycles pattern.Δ T is temperature increment, preferred as one, setting Δ T=5 DEG C.Namely as maximum temperature T maxbe more than or equal to 40 DEG C, simultaneously mean temperature when being more than or equal to 35 DEG C, power battery thermal management system enters cool cycles pattern, cools battery, until mean temperature when being less than or equal to 30 DEG C, exit cool cycles pattern.
S320: cool cycles pattern and heat cycles Pattern Class are seemingly, close the valve 185 of heater 183 front end, open the valve 185 of radiator 184 front end, cooling fluid is dispelled the heat through radiator 184, afterwards enter in battery case 110 with battery carry out heat exchange, battery is cooled.The rotating speed v of circulating pump 182 meets following relation:
v = v m a x · a r c t a n ( T ‾ - T 2 + Δ T )
Wherein, v maxfor the maximum (top) speed of circulating pump 182.
S330: in cool cycles pattern, also needs to judge temperature equalization situation, and temperature equalization degree ε calculates by following formula:
ϵ = T max - T ‾ T ‾ .
When temperature equalization Du ε≤0.2, then enter cooling balanced mode.
S340: the course of work of cooling balanced mode is similar with heating balanced mode, first judges the position that maximum temperature occurs.If the region that maximum temperature occurs is at centre row, then close second on the second flowline 160 and the 3rd flowline 170 to go out oil groove 161 and the 3rd and go out oil groove 171, then first on the first flowline 140 is gone out the middle row of position alignment of oil groove 145, and turn down the aperture that master goes out oil groove 136.If the region that maximum temperature occurs is not at centre row, so except see turn down main go out except the aperture, first of oil groove 136 this region of position alignment of going out oil groove 145 is expert at, also need to go out second oil groove 161 and the 3rd go out in oil groove 171 with this region closer to the oil groove that goes out to open and by the row at this place, region of position alignment.
In cooling balanced mode, the aperture θ and the temperature equalization degree ε that lead oil groove 136 meet following relation:
θ＝a (ε-0.2)，
Wherein, constant a=0.5.
Although embodiment of the present utility model is open as above, but it is not restricted to listed in specification and execution mode utilization, it can be applied to various applicable field of the present utility model completely, for those skilled in the art, can easily realize other amendment, therefore do not deviating under the universal that claim and equivalency range limit, the utility model is not limited to specific details and illustrates here and the legend described.

Claims (9)

1. a power battery thermal management system, is characterized in that, comprising:
Battery case, is placed with battery pack in it;
Main oil inlet pipe, it is arranged at the first side in described battery case, and described main oil inlet pipe sidewall offers main oil-feed tank along its length;
Main flowline, it is arranged at the second side in described battery case, and described second side is parallel with the first side, and described main flowline sidewall offers along its length master and go out oil groove, the A/F that described master goes out oil groove can regulate; And
First flowline, it is arranged at the second side in described battery case, described first flowline sidewall is provided with first and goes out oil groove, and the described first position going out oil groove can regulate along the first flowline length direction change;
Temperature sensor, it is arranged in battery case, for detecting the temperature in battery case;
External circulating system, it is for the circulation of cooling fluid;
Wherein, cooling fluid by the main oil-feed tank of main oil inlet pipe enter in battery case with battery pack heat exchange, and according to the temperature value of temperature sensor measurement, the A/F and first regulating master to go out oil groove goes out the position of oil groove, make cooling fluid from main go out oil groove and the first fuel-displaced concentrated flow go out, to increase the flow of its corresponding region cooling fluid.
2. power battery thermal management system according to claim 1, is characterized in that, also comprises:
Second flowline, it is arranged at the 3rd side in described battery case, described second flowline sidewall is provided with second and goes out oil groove, and the described second position going out oil groove can along the second flowline length direction left and right adjusting;
3rd flowline, it is arranged at the 4th side in described battery case, described 3rd flowline sidewall is provided with the 3rd and goes out oil groove, and the described 3rd position going out oil groove can along the 3rd flowline length direction left and right adjusting;
Wherein, described 3rd side is parallel with the 4th side, and described 3rd side is perpendicular to described first side.
3. power battery thermal management system according to claim 1, it is characterized in that, described main flowline comprises main fuel-displaced outer tube and main fuel-displaced interior pipe, the fuel-displaced outer tube sleeve of described master is located at outside main fuel-displaced interior pipe, the fuel-displaced outer tube of described master is provided with outer tube and goes out oil groove, the fuel-displaced interior pipe of described master is provided with interior pipe and goes out oil groove, outer tube goes out oil groove and the fuel-displaced groove of interior pipe and forms described master and go out oil groove; The fuel-displaced interior pipe of described master can rotate relative to the fuel-displaced outer tube of described master, makes master go out oil groove aperture maximum when outer tube goes out oil groove and interior pipe goes out oil groove coincidence, goes out oil groove aperture and reduce or close described in the fuel-displaced interior pipe rotation of described master can make.
4. power battery thermal management system according to claim 2, it is characterized in that, described first flowline comprises the first fuel-displaced interior pipe and the first fuel-displaced outer tube, described first fuel-displaced outer tube sleeve is located at outside the first fuel-displaced interior pipe, described first fuel-displaced outer tube wall is provided with outer tube slot, and described outer tube slot is arranged along described first fuel-displaced outer tube length direction; Described first fuel-displaced interior pipe sidewall is provided with interior tube seat, described interior tube seat is arranged on the first fuel-displaced interior pipe in the shape of a spiral, the winding angle of spiral is less than 360 °, described first fuel-displaced outer tube is fixedly connected with battery case, described first fuel-displaced interior pipe can rotate relative to the first fuel-displaced outer tube, the described outer tube slot composition first that matches with interior tube seat goes out oil groove, can change the position that first goes out oil groove after described first fuel-displaced interior pipe rotates.
5. power battery thermal management system according to claim 4, is characterized in that, described interior in the shape of a spiral tube seat spiral winding angle is 270 °.
6. power battery thermal management system according to claim 1, is characterized in that, can be on average divided into m × n cuboid region in described battery case, described temperature sensor is arranged at the center in each region, wherein, m, n are the integer being more than or equal to 2.
7. power battery thermal management system according to claim 1, is characterized in that, described external circulating system comprises:
Liquid storage cylinder, it is for storing cooling fluid;
Circulating pump, it is connected with described liquid storage cylinder and main oil inlet pipe, for the circulation of described cooling fluid provides power; And
Heater, it is for heating cooling fluid;
Radiator, it is for cooling cooling fluid;
Wherein, described cooling fluid adopts transformer oil.
8. power battery thermal management system according to claim 2, it is characterized in that, described second flowline comprises the second fuel-displaced interior pipe and the second fuel-displaced outer tube, described second fuel-displaced outer tube sleeve is located at outside the second fuel-displaced interior pipe, described second fuel-displaced outer tube wall is provided with outer tube slot, and described outer tube slot is arranged along described second fuel-displaced outer tube length direction; Described second fuel-displaced interior pipe sidewall is provided with interior tube seat, described interior tube seat is arranged on the second fuel-displaced interior pipe in the shape of a spiral, the winding angle of spiral is less than 360 °, described second fuel-displaced outer tube is fixedly connected with battery case, described second fuel-displaced interior pipe can rotate relative to the second fuel-displaced outer tube, the described outer tube slot composition second that matches with interior tube seat goes out oil groove, can change the position that second goes out oil groove after described second fuel-displaced interior pipe rotates;
Described 3rd flowline comprises the 3rd fuel-displaced interior pipe and the 3rd fuel-displaced outer tube, described 3rd fuel-displaced outer tube sleeve is located at outside the 3rd fuel-displaced interior pipe, described 3rd fuel-displaced outer tube wall is provided with outer tube slot, and described outer tube slot is arranged along described 3rd fuel-displaced outer tube length direction; Described 3rd fuel-displaced interior pipe sidewall is provided with interior tube seat, described interior tube seat is arranged on the 3rd fuel-displaced interior pipe in the shape of a spiral, the winding angle of spiral is less than 360 °, described 3rd fuel-displaced outer tube is fixedly connected with battery case, described 3rd fuel-displaced interior pipe can rotate relative to the 3rd fuel-displaced outer tube, the described outer tube slot composition the 3rd that matches with interior tube seat goes out oil groove, can change the position that the 3rd goes out oil groove after described 3rd fuel-displaced interior pipe rotates.
9. power battery thermal management system according to claim 8, is characterized in that, described main oil inlet pipe, main flowline, the first flowline, the second flowline, the 3rd flowline all adopt silicon nitride material to make.
CN201520643181.XU 2015-08-25 2015-08-25 Power battery thermal management system Expired - Fee Related CN204857901U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520643181.XU CN204857901U (en) 2015-08-25 2015-08-25 Power battery thermal management system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201520643181.XU CN204857901U (en) 2015-08-25 2015-08-25 Power battery thermal management system

Publications (1)

Publication Number Publication Date
CN204857901U true CN204857901U (en) 2015-12-09

Family

ID=54748426

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201520643181.XU Expired - Fee Related CN204857901U (en) 2015-08-25 2015-08-25 Power battery thermal management system

Country Status (1)

Country Link
CN (1) CN204857901U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105186061A (en) * 2015-08-25 2015-12-23 吉林大学 Heat management system for power batteries and control method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105186061A (en) * 2015-08-25 2015-12-23 吉林大学 Heat management system for power batteries and control method

Similar Documents

Publication Publication Date Title
CN105186061A (en) Heat management system for power batteries and control method
CN109361034A (en) The equal balance system of battery pack temperature and Active Control Method
CN106848485A (en) A kind of automobile heating heat-exchange system of electric heater unit intelligent starting
CN205282539U (en) Hybrid bull -dozer battery box
CN105606645B (en) A kind of high temperature step phase-transition heat-storage equipment complex performance testing device and method of testing
CN103022590B (en) Battery heating system of electric automobile
CN108461870A (en) Battery temperature control device and method, controller, storage medium and electric charging station
CN102593553B (en) Battery pack with temperature adjusting function
CN106515370B (en) To the heating heat-exchange system of automobile batteries storehouse heat preservation
CN206225441U (en) Cold and Phase cooling combination the lithium ion battery casing of liquid
CN109271700A (en) Battery thermal management method and system based on the modeling of deep learning multitiered network
CN105489967A (en) Battery pack radiating apparatus, system and method for electric vehicle
CN105895998A (en) Composite thermal management system
CN204857901U (en) Power battery thermal management system
CN206602155U (en) A kind of battery of hybrid vehicle cabin temperature control system
CN105390638B (en) Battery modules temperature difference balancer
CN106739931A (en) A kind of heating heat-exchange system of automobile
CN106602172A (en) Constant temperature system of power battery
CN206749518U (en) New energy pure electric motor coach power cell motor combines heat management system
CN205303623U (en) Electric automobile's battery package heat abstractor and system
CN207994012U (en) Battery temperature control device and electric charging station
CN206947470U (en) A kind of heat-exchange device for electrokinetic cell
CN209675449U (en) A kind of batteries of electric automobile heat management device
CN204412387U (en) Sand mill cooling recirculation system
CN204963232U (en) Energy -efficient new energy automobile PTC liquid electric heater

Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20151209

Termination date: 20160825