CN111244569A - Air cooling and liquid cooling combined battery heat dissipation device and method - Google Patents
Air cooling and liquid cooling combined battery heat dissipation device and method Download PDFInfo
- Publication number
- CN111244569A CN111244569A CN202010036031.8A CN202010036031A CN111244569A CN 111244569 A CN111244569 A CN 111244569A CN 202010036031 A CN202010036031 A CN 202010036031A CN 111244569 A CN111244569 A CN 111244569A
- Authority
- CN
- China
- Prior art keywords
- heat dissipation
- cooling
- battery
- liquid
- shaped surrounding
- 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.)
- Granted
Links
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/613—Cooling or keeping cold
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
- H01M10/4257—Smart batteries, e.g. electronic circuits inside the housing of the cells or batteries
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
- H01M10/625—Vehicles
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/63—Control systems
- H01M10/633—Control systems characterised by algorithms, flow charts, software details or the like
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/63—Control systems
- H01M10/635—Control systems based on ambient temperature
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/655—Solid structures for heat exchange or heat conduction
- H01M10/6551—Surfaces specially adapted for heat dissipation or radiation, e.g. fins or coatings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/655—Solid structures for heat exchange or heat conduction
- H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
- H01M10/6557—Solid parts with flow channel passages or pipes for heat exchange arranged between the cells
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
- H01M10/6561—Gases
- H01M10/6563—Gases with forced flow, e.g. by blowers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
- H01M10/6567—Liquids
- H01M10/6568—Liquids characterised by flow circuits, e.g. loops, located externally to the cells or cell casings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
- H01M2010/4271—Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
- H01M2010/4278—Systems for data transfer from batteries, e.g. transfer of battery parameters to a controller, data transferred between battery controller and main controller
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Automation & Control Theory (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Secondary Cells (AREA)
Abstract
The invention provides a battery heat dissipation device and method combining air cooling and liquid cooling, belonging to the technical field of automobile battery heat management; the whole heat dissipation device mainly combines air cooling and liquid cooling by arranging the bidirectional surrounding liquid cooling pipe at the periphery of the battery module and arranging the cooling fan at the bottom of the battery box body to dissipate heat of the battery module; meanwhile, the BMS is used for controlling the cooling fan driving motor and the electronic water pump, different heat dissipation forms can be selected according to the temperature of the battery module detected in real time, the rotating speed of the cooling fan and the inlet flow of cooling liquid can be controlled in real time according to the temperature, energy is saved, and heat dissipation is efficient; the heat dissipation device is also provided with a wind pendulum and an exhaust fan for auxiliary heat dissipation, so that the heat dissipation effect is further improved.
Description
Technical Field
The invention belongs to the technical field of automobile battery thermal management, and particularly relates to a battery heat dissipation device and method combining air cooling and liquid cooling.
Background
As a main power source of a new energy automobile, the lithium ion battery has the advantages of high working voltage, high energy density, long cycle life, environmental friendliness and the like, but is very sensitive to temperature. Researches prove that the optimum working temperature of the lithium ion battery is 20-40 ℃, and the temperature difference (delta T) in the battery pack is controlled below 5 ℃. When the ambient temperature is too low, the movement rate of conductive ions is reduced, the internal resistance of the lithium ion battery is rapidly increased, the charge-discharge capacity is remarkably reduced, and meanwhile, lithium dendrites are easily formed on the surface of the negative electrode of the battery to cause the internal short circuit of the battery; when the environmental temperature is too high, a series of chemical reactions are mutually accumulated and enhanced to generate large amount of heat, so that safety accidents such as fire and deflagration caused by thermal runaway are easily caused. The cooling mode of the conventional lithium ion battery thermal management system mainly comprises air cooling (air cooling), liquid cooling (liquid cooling) and phase change material cooling, wherein the air cooling has the advantages of simple structure, convenience in maintenance and the like, but the maximum temperature of a battery pack cannot be controlled within 50 ℃ during high-rate charge and discharge; compared with air cooling, the existing liquid cooling structure has better cooling effect, but the whole structure is more complex and the energy consumption of the system is larger; the cooling of the phase-change material has the defects of small self heat conductivity coefficient and large heat absorption at the phase-change point of the material, and the problems of volume expansion and the like can be caused after the phase change of the material. In the current battery thermal management technology, few researches for effectively controlling two cooling modes of air cooling and liquid cooling to save energy are carried out.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides an air cooling and liquid cooling combined battery heat dissipation device and method, wherein two cooling modes of air cooling and liquid cooling are combined, the rotating speed of a fan in the air cooling mode and the inlet flow of cooling liquid in the liquid cooling mode are controlled in real time through target current, the battery is effectively dissipated, and energy is saved.
The present invention achieves the above-described object by the following technical means.
A battery heat dissipation device combining air cooling and liquid cooling comprises a battery box body, a heat dissipation assembly, a battery module and a BMS, wherein the heat dissipation assembly comprises a bidirectional S-shaped surrounding liquid cooling pipe surrounding the periphery of a single battery wrapped in the battery module, the side wall of the single battery is provided with a temperature sensor, and a water inlet and a water outlet of the liquid cooling pipe are communicated with each other sequentially through a water inlet pipe, an electronic water pump, a water tank and a water outlet pipe; the bottom of the battery box body is also provided with a cooling fan; temperature sensor and BMS signal connection, cooling fan, electronic water pump are controlled by BMS.
Furthermore, a substrate for placing the battery module is arranged in the battery box body, and a through hole is formed in the surface of the substrate.
Furthermore, the cooling fans are arranged on two sides of the bottom of the battery box body, wind swings formed by flow deflectors are arranged above the cooling fans, the flow deflectors are fixed on the battery box body through rotating shafts at two ends, and the flow deflectors can rotate.
Furthermore, a wind baffle plate is arranged between the flow deflectors on the two sides.
Furthermore, the bidirectional S-shaped surrounding liquid cooling pipe body is composed of m semi-cylindrical hollow pipe bodies, m is larger than or equal to 1 and is a positive integer, and the radius of an inner arc is consistent with that of the single battery.
Further, the bidirectional S-shaped surrounding liquid-cooling pipe comprises an upper S-shaped surrounding liquid-cooling pipe and a lower S-shaped surrounding liquid-cooling pipe which are opposite in surrounding direction.
Further, a water inlet A of the upper S-shaped surrounding liquid cooling pipe and a water outlet A of the lower S-shaped surrounding liquid cooling pipe are arranged on one side; the water outlet B of the upper S-shaped surrounding liquid-cooling pipe and the water inlet B of the lower S-shaped surrounding liquid-cooling pipe are arranged on one side.
Further, an exhaust fan is arranged at the top of the battery box body.
A heat dissipation method using the heat dissipation device comprises the following steps: the BMS collects the temperature data of the single battery (5) transmitted by the temperature sensor, judges the corresponding heat dissipation mode according to the temperature data, controls the driving motor and the electronic water pump to work and dissipates heat of the battery module in the corresponding mode; the heat dissipation mode comprises air-cooled heat dissipation, liquid-cooled heat dissipation and air-cooled liquid-cooled combined heat dissipation.
Further, in the air-cooling and liquid-cooling combined heat dissipation mode, the BMS obtains the optimal target current i of the driving motor by utilizing a particle swarm algorithmfbestAnd target current i of electronic water pumpebestAnd controlling the rotating speed of the cooling fan and the water inlet flow of the cooling liquid.
The invention has the following beneficial effects:
compared with the prior art, the invention combines two cooling modes of air cooling and liquid cooling, and can select different heat dissipation modes according to the detected temperature; the target current can be obtained through a particle swarm algorithm, the rotating speed of a cooling fan and the inlet flow of cooling liquid can be controlled in real time according to the temperature, and meanwhile, the energy can be effectively saved; the heat dissipation device provided by the invention adopts the bidirectional S-shaped surrounding liquid cooling pipe structure to wrap the single battery for heat dissipation, so that the contact area between the cooling liquid and the surface of the battery is increased, the accumulation of a large amount of heat in the battery box body during high-rate discharge is effectively inhibited, and the battery can be constantly in the optimal temperature range; the upper liquid cooling pipe and the lower liquid cooling pipe adopt the design of the positions of the cooling liquid inlets which are complementary in two directions, so that the problem of uneven heat dissipation caused by the gradual rise of the temperature of the cooling liquid along the flow path can be effectively solved, and the temperature consistency of the battery during working is ensured; the whole device is simple in connection and low in cost, improves the space utilization rate in the narrow battery box body, and improves the heat dissipation performance of the battery module.
Drawings
FIG. 1 is a schematic view of a heat dissipation device according to the present invention;
FIG. 2 is a schematic view of an S-shaped coiled liquid cooling tube according to the present invention;
FIG. 3 is a schematic view of a cold air pendulum according to the present invention;
fig. 4 is a flow chart of a battery heat dissipation method according to the present invention.
In the figure: 1-a substrate; 2-an exhaust fan; 3-a temperature sensor; 4-a water tank; 5-a single cell; 6-battery box body; 7-a cooling fan; 8-installing an S-shaped surrounding liquid cooling pipe; 9-lower an S-shaped surrounding liquid cooling pipe; 801-water inlet A; 802-water outlet B; 901-water inlet B; 902-water outlet A; 10-a water inlet pipe; 11-a water outlet pipe; 12-a flow deflector; 13-bending the rod; 14-a drive link; 15-rotating rod; 16 wind screen.
Detailed Description
The invention will be further described with reference to the following figures and specific examples, but the scope of the invention is not limited thereto.
As shown in fig. 1, the heat dissipation device of the present invention includes a Battery case 6, a heat dissipation assembly, a Battery module disposed in the Battery case 6, and a BMS (Battery Management System) mounted in the Battery case 6.
A plurality of single batteries 5 with battery covers in the battery box 6 are arranged in a rectangular array to form a battery module, and the lower part of the battery box 6 is provided with a substrate 1 for placing the battery module; the part of the surface of the substrate 1, which is not in contact with the single battery 5, is provided with a plurality of through holes, so that heat dissipation is facilitated. The heat dissipation assembly comprises an exhaust fan 2, a temperature sensor 3, a bidirectional S-shaped surrounding liquid cooling pipe, a water tank 4, an electronic water pump, a wind pendulum and a cooling fan 7. The exhaust fan 2 is arranged at the top of the battery box body 6 and is pushed to move by natural wind power to exhaust hot air accumulated at the top of the battery box body 6, so that the circulation of cooling air in the battery box body 6 is facilitated; all be equipped with temperature sensor 3 on each battery cell 5 lateral wall (for the convenience of looking, only drawn a temperature sensor 3 in the figure), temperature sensor 3 and BMS signal connection, the temperature data transfer of the battery cell 5 who will detect is to BMS.
As shown in fig. 2, the bidirectional S-shaped surrounding liquid-cooling pipe body is composed of m semi-cylindrical hollow pipe bodies, m is greater than or equal to 1 and is a positive integer, and the radius of the inner arc is consistent with that of the single battery 5; the bidirectional S-shaped surrounding liquid-cooling pipe comprises an upper S-shaped surrounding liquid-cooling pipe 8 and a lower S-shaped surrounding liquid-cooling pipe 9 which are opposite in surrounding direction; the height of the upper S-shaped surrounding liquid cooling pipe 8 and the height of the lower S-shaped surrounding liquid cooling pipe 9 are both half of the height of the main body of the single battery 5; the upper S-shaped surrounding liquid cooling pipe 8 surrounds and wraps the upper half part of the single battery 5, and the lower S-shaped surrounding liquid cooling pipe 9 surrounds and wraps the lower half part of the single battery 5; the water inlet A801 of the upper S-shaped surrounding liquid cooling pipe 8 and the water outlet A902 of the lower S-shaped surrounding liquid cooling pipe 9 are arranged on one side, the water outlet B802 of the upper S-shaped surrounding liquid cooling pipe 8 and the water inlet B901 of the lower S-shaped surrounding liquid cooling pipe 9 are arranged on one side, and uniform heat dissipation is guaranteed; in the embodiment, the liquid cooling pipe is preferably made of aluminum material, so that the heat dissipation effect is improved. One end of the water inlet pipe 10 penetrates through the battery box body 6 and is divided into two branch pipes (not shown in the figure), the two branch pipes are respectively connected with the water inlet A801 and the water inlet B901, the other end of the water inlet pipe is connected with the electronic water pump, the other end of the electronic water pump is connected with the water tank 4, and the other end of the water tank 4 is connected with the water outlet pipe 11; the other end of the water outlet pipe 11 also penetrates through the battery box body 6 and is divided into two branch pipes (not shown in the figure), and the two branch pipes are respectively connected with a water outlet B802 and a water outlet A902; the water inlet pipe 10, the water outlet pipe 11 and the branch pipes are consistent with the shape of the bidirectional S-shaped surrounding liquid cooling pipe; the electronic water pump is also electrically connected with the BMS, so that the flow speed of the cooling water can be conveniently controlled; the electronic water pump comprises an electric pump, and the electric pump can drive the rotary valve to twist to a certain degree, so that the area of the throttling hole is changed, and the flow of the cooling liquid is controlled.
As shown in fig. 1 and 3, two cooling fans 7 are fixedly connected to two sides of the bottom of the battery box 6 through bolts, so that auxiliary heat dissipation is facilitated, the cooling fans 7 are connected with an output shaft of a driving motor, the driving motor is electrically connected with a BMS, and the rotating speed of the cooling fans 7 is conveniently controlled. An air pendulum consisting of a plurality of flow deflectors 12 is arranged above the two cooling fans 7, and the flow deflectors 12 are respectively connected with the front part and the rear part of the battery box body 6 through rotating shafts 17 at the two ends; the side edges of the flow deflectors 12 are fixedly connected with bent rods 13, the bent rods 13 are hinged with transmission connecting rods 14, the other ends of the transmission connecting rods 14 penetrate through the battery box body 6 to be connected with rotating rods 15, the rotating rods 15 are connected with stepping motors, and the stepping motors are electrically connected with a BMS; the arrangement of the flow deflector 12 is convenient for concentrating the air flow blown by the cooling fan 7, increasing the amount of cooling air entering the through hole, and improving the heat flux of the convection heat exchange between the air and the surface of the battery, so that the heat on the surface of the battery can be taken away by the cooling air flow in time, and the heat dissipation is facilitated. A wind baffle 16 is arranged between the wind pendulums at the two sides to prevent the interference generated when the cooling air flows at the left and right sides flow to the middle part of the battery box body simultaneously.
Fig. 4 shows a flowchart of the battery heat dissipation method according to the embodiment, and the specific process is as follows:
step 1: the BMS collects temperature data of the unit batteries 5 transmitted from the temperature sensors 3.
Step 2: BMS is inside to calculate and acquire average temperature T, the biggest difference in temperature lambda T of battery boxmaxRate of temperature rise vT(ii) a The specific calculation formula is as follows:
ΛTmax＝max(Ti)-min(Ti) (2)
wherein n represents the number of single batteries; i represents the ith single battery; t isiIndicating the temperature of the ith unit cell detected by the temperature sensor; t (T + T)0) Represents t + t0The battery case temperature at that moment; t (t) represents the battery case temperature at time t; t is t0Is the sampling time.
And step 3: the cooling mode is judged in the BMS, and the control device carries out heat dissipation in different forms: when T is less than or equal to k1And v isT≤p1During the time, only carry out the forced air cooling heat dissipation, the forced air cooling heat dissipation process does: the BMS controls the driving motor to work, and the driving motor drives the cooling fan 7 to work to cool and radiate the battery module; when k is1＜T＜k2Or p1＜vT＜p2During the time, only carry out the liquid cooling heat dissipation, the liquid cooling heat dissipation process is: the BMS controls the electronic water pump to respectively send cooling water in the water tank 4 into a water inlet A801 of the upper S-shaped surrounding liquid-cooling pipe 8 and a water inlet B901 of the lower S-shaped surrounding liquid-cooling pipe 9 through a water inlet pipe 10, liquid-cooling heat dissipation is carried out on the battery module, and then the cooling liquid flows back into the water tank 4 from a water outlet pipe 11; when T is more than or equal to k2Or vT≥p2And meanwhile, liquid cooling and air cooling combined heat dissipation are carried out. Wherein k is1、k2To determine the threshold value for temperature, p1、p2Determining a threshold for the rate of temperature rise; the threshold value is related to the type of the single battery, the structure of the battery box body and the working condition of the battery.
Step 3.1: when only air cooling heat dissipation is carried out, the BMS sends high and low level pulse signals to the stepping motor, the stepping motor is driven to rotate for a fixed angle according to a set direction, so that the flow deflectors 12 are driven to move, the flow deflectors 12 on the two sides of the wind shielding partition plate 16 are ensured to swing after being fixed for 1s on the left side and the right side of the battery box body respectively, and swing back immediately after set time is reached, so that circular swing is realized, the heat dissipation effect on the left side and the right side of the battery box body is improved, and the local temperature in the box body is; BMS outputs a driving motor target current i at the same timefAnd the driving motor is controlled, so that the rotating speed of the cooling fan 7 is controlled in real time according to the temperature of the single battery. Target current ifThe acquisition process comprises the following steps: under the current air-cooling heat dissipation working state, the BMS continuously changes the current value input to the driving motor of the cooling fan 7, collects the temperature rise rate and the current temperature of the battery box body, and fits into a functional relationship as shown below, wherein vT0For target rate of temperature rise:
vT＝f1(T,if)＝vT0(4)
then the motor target current i is drivenfComprises the following steps:
if＝f1 -1(T,vT0) (5)
step 3.2: when only liquid cooling heat dissipation is carried out, the BMS controls the electronic water pump to convey cooling water in the water tank 4 to the liquid cooling pipe to dissipate heat of the battery box body, and meanwhile the BMS outputs a target current i of the electronic water pumpeControlling the water inlet flow of the water inlet of the liquid cooling pipe to obtain a target current ieThe acquisition process comprises the following steps: under current liquid cooling heat dissipation operating condition, BMS constantly changes the current value of inputing for electronic water pump, gathers the temperature rise rate and the current temperature of battery box to the functional relation as shown below is fitted into:
vT＝f2(T,ie)＝vT0(6)
target current i of the electronic water pumpeComprises the following steps:
ie＝f2 -1(T,vT0) (7)
step 3.3: when the heat dissipation is carried out by combining air cooling and liquid cooling, the BMS calculates the target current i of the driving motor by utilizing a Particle Swarm Optimization (PSO)fAnd target current i of electronic water pumpeAnd meanwhile, correspondingly controlling the rotating speed of the cooling fan 7 and the inflow rate of the cooling liquid, wherein the specific calculation method comprises the following steps:
step 3.3.1: driving the motor target Current i with the Cooling Fan 7fAnd target current i of electronic water pumpeIs an optimizing object; initializing a population of particles, including random location XkAnd velocity Vk(ii) a Let the kth particle position be denoted Xk＝(Xkf,Xke) The velocity is represented as Vk＝(Vkf,Vke)。
Step 3.3.2: calculating the integral power loss P of the heat sinkf+PeIn which P isf、PePower loss during air cooling heat dissipation and power loss during liquid cooling heat dissipation respectively:
Pf＝UifECU+if 2Rm(8)
wherein ifECUAn ECU is used for driving a motor to wait for working current; rmEquivalent internal resistance of a coil of the driving motor; u is the driving motor working voltage.
Pe＝PJ+Pv+Ph(9)
Wherein, PJPower loss for orifice:
Pvfor rotary valve losses:
Phthe electric loss of the electronic water pump is as follows: ph＝ie 2Rn+ieECURel 2；
Wherein ρ is water density; qsOutputting the flow for the electronic water pump; k is a radical ofieDriving an electromagnetic torque coefficient of a motor for the electronic water pump; i.e. ieDriving the motor to work current for the electronic water pump; d is the diameter of the hydraulic cylinder; keIs a flow compensation coefficient; q. q.spIs the displacement of the water pump; n is a flow safety coefficient; k is a radical of10Is a unit transformation coefficient; cdIs the flow coefficient of the orifice hole; a. theJIs the flow area of the orifice; p is water pressure; a is the opening area of the valve port; rnEquivalent internal resistance of a coil of a driving motor of the electronic water pump; i.e. ieECUAn ECU (electronic control Unit) is used for driving a motor of the electronic water pump to stand by for working current; relIs the resistance of the ECU itself.
Step 3.3.3: under the current battery box air-cooling and liquid-cooling coexisting heat dissipation working state, the current value input to the electronic water pump and the current value input to the cooling fan 7 driving motor are continuously changed, the temperature rise rate and the current temperature of the battery are collected, and the temperature rise rate and the current temperature are fitted into a functional relation as shown below:
vT＝f3(if,ie,T) (10)
vT0＝f3(if,ie,T) (11)
step 3.3.4: taking the overall power loss P of the heat dissipation device obtained in the step 3.3.2 as a fitness function of the PSO, taking the formula (11) in the step 3.3.3 as a constraint condition of the PSO, and calculating a fitness function value P of each particlek(ii) a Store t1Best position X found by the particle population at that momentbestBest position X passed by each particlekbestAnd the optimum fitness function value Pkbest。
By using Xk(t+1)＝Xk(t)+Vk(t) and Vk(t+1)＝Vk(t)+c1r1[Xkbest-Xk(t)]+c2r2[Xbest-Xk(t)]And respectively updating the position and the speed of each particle, and ensuring that the speed of each particle meets the following requirements: vke∈(ieqs-iemax,iemax-ieqs)，Vky∈(iyqs-iymax,iymax-iyqs) (ii) a Wherein c is1、c2A positive learning factor; r is1、r2Random numbers uniformly distributed between 0 and 1; vkeIs ieThe particle velocity of (a); vkyIs iyThe particle velocity of (a); i.e. ieqs、iyqsAs initial current value, iemax、iymaxIs the maximum current value.
Step 3.3.5: will be updated t1Fitness function value and t of each particle at +1 moment1Best position X experienced by each particle at a timekbestThe corresponding fitness function value is compared, and if the fitness function value is smaller, the current position is taken as the best position X of the particlekbest。
Will be updated t1Fitness function value of each particle at +1 moment and population particles t1Best position X found at a momentbestThe corresponding fitness function values are compared, and if the fitness function value is smaller, the current position is taken as the best position X found by the particle groupbest。
Setting the updating times as b, and outputting X after b times of updatingbestAccording to Xi＝(Xif,Xie) The final optimization objective can be derived: target current i of driving motorfbestAnd target current i of electronic water pumpebest。
The above, lower, left, right, front and rear mentioned in the described embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any obvious improvements, substitutions or modifications can be made by those skilled in the art without departing from the spirit of the present invention.
Claims (10)
1. A battery heat dissipation device combining air cooling and liquid cooling comprises a battery box body (6), a heat dissipation assembly, a battery module and a BMS, and is characterized in that the heat dissipation assembly comprises a bidirectional S-shaped surrounding liquid cooling pipe surrounding the periphery of a single battery (5) wrapped in the battery module, and the side wall of the single battery (5) is provided with a temperature sensor (3); the water inlet and the water outlet of the liquid cooling pipe are communicated with each other through a water inlet pipe (10), an electronic water pump, a water tank (4) and a water outlet pipe (11) in sequence; the bottom of the battery box body (6) is also provided with a cooling fan (7); the temperature sensor (3) is in signal connection with the BMS, and the cooling fan (7) and the electronic water pump are controlled by the BMS.
2. The heat dissipation device according to claim 1, wherein a substrate (1) for placing the battery module is arranged in the battery box body (6), and a through hole is formed in the surface of the substrate (1).
3. The heat dissipation device according to claim 2, wherein the cooling fans (7) are disposed on two sides of the bottom of the battery box (6), a wind pendulum consisting of flow deflectors (12) is disposed above each cooling fan (7), the flow deflectors (12) are fixed on the battery box (6) through rotating shafts (17) at two ends, and the flow deflectors (12) are rotatable.
4. A heat sink according to claim 3, wherein a wind barrier (16) is provided between the side baffles (12).
5. The heat dissipation device as claimed in claim 2, wherein the bidirectional S-shaped surrounding liquid-cooled tube body is composed of m semi-cylindrical hollow tube bodies, m is greater than or equal to 1 and is a positive integer, and the radius of the inner circular arc is consistent with that of the single battery (5).
6. The heat sink as claimed in claim 5, wherein the bidirectional S-shaped surrounding liquid-cooled tube comprises an upper S-shaped surrounding liquid-cooled tube (8) and a lower S-shaped surrounding liquid-cooled tube (9) which are opposite in surrounding direction.
7. The heat sink according to claim 6, wherein the upper S-shaped surrounding liquid-cooled tube (8) water inlet A (801) and the lower S-shaped surrounding liquid-cooled tube (9) water outlet A (902) are arranged on one side; the water outlet B (802) of the upper S-shaped surrounding liquid-cooling pipe (8) and the water inlet B (901) of the lower S-shaped surrounding liquid-cooling pipe (9) are arranged on one side.
8. The heat sink according to claim 1, wherein the battery box (6) is provided with a ventilation fan (2) on top.
9. A heat dissipating method using the heat dissipating device according to any one of claims 1 to 8, comprising the steps of: the BMS collects the temperature data of the single battery (5) transmitted by the temperature sensor (3), judges the corresponding heat dissipation mode according to the temperature data, controls the driving motor and the electronic water pump to work and dissipates heat of the battery module in the corresponding mode; the heat dissipation mode comprises air-cooled heat dissipation, liquid-cooled heat dissipation and air-cooled liquid-cooled combined heat dissipation.
10. The heat dissipation method as claimed in claim 9, wherein in the air-cooling and liquid-cooling combined heat dissipation mode, the BMS obtains the optimal target current i of the driving motor by using a particle swarm algorithmfbestAnd target current i of electronic water pumpebestAnd the rotating speed of the cooling fan (7) and the water inlet flow of the cooling liquid are controlled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010036031.8A CN111244569B (en) | 2020-01-14 | 2020-01-14 | Air cooling and liquid cooling combined battery heat dissipation device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010036031.8A CN111244569B (en) | 2020-01-14 | 2020-01-14 | Air cooling and liquid cooling combined battery heat dissipation device and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111244569A true CN111244569A (en) | 2020-06-05 |
| CN111244569B CN111244569B (en) | 2022-08-23 |
Family
ID=70865759
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010036031.8A Active CN111244569B (en) | 2020-01-14 | 2020-01-14 | Air cooling and liquid cooling combined battery heat dissipation device and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111244569B (en) |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111816821A (en) * | 2020-09-11 | 2020-10-23 | 南京翔维物流设备制造有限公司 | New energy automobile battery box |
| CN111969275A (en) * | 2020-07-13 | 2020-11-20 | 广东工业大学 | Liquid cooling combines forced air cooling's battery cooling box |
| CN112701380A (en) * | 2020-12-30 | 2021-04-23 | 上海亿边科技有限公司 | Energy storage battery thermal management design system |
| CN113291201A (en) * | 2021-05-07 | 2021-08-24 | 四川大学锦城学院 | Battery management system based on wireless communication |
| CN113851756A (en) * | 2021-09-23 | 2021-12-28 | 中原工学院 | Air cooling and liquid cooling hybrid battery heat management device and heat management method |
| CN113849054A (en) * | 2021-08-31 | 2021-12-28 | 兰洋(宁波)科技有限公司 | Immersed liquid cooling heat dissipation system applied to data center |
| CN114188635A (en) * | 2021-12-10 | 2022-03-15 | 傲普(上海)新能源有限公司 | Lithium ion battery energy storage system based on Tesla valve heat dissipation |
| CN114464917A (en) * | 2022-01-06 | 2022-05-10 | 刘运珍 | New energy automobile battery is with adjustable wind formula radiator |
| CN114696003A (en) * | 2022-03-03 | 2022-07-01 | 合肥工业大学 | Power battery liquid cooling module based on flexible micro porous flat tube |
| CN114824585A (en) * | 2022-04-08 | 2022-07-29 | 合肥召洋电子科技有限公司 | Battery package water cooling system |
| CN114824557A (en) * | 2022-04-22 | 2022-07-29 | 北京科技大学 | Battery package cooling system |
| CN116031540A (en) * | 2023-03-30 | 2023-04-28 | 北京中冠宝新能源科技有限责任公司 | New energy electricity storage equipment and management system thereof |
| CN116566124A (en) * | 2023-07-11 | 2023-08-08 | 苏州舍勒智能科技有限公司 | High-power linear motor with intelligent thermal management |
| CN117748003A (en) * | 2023-12-21 | 2024-03-22 | 湖南兆科动力新能源有限公司 | Lithium ion battery with composite heat dissipation structure |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN208706726U (en) * | 2018-08-28 | 2019-04-05 | 深圳市国威科创新能源科技有限公司 | A kind of diamond type battery modules |
| CN209183615U (en) * | 2019-01-14 | 2019-07-30 | 李波 | A kind of automobile-used liquid cooling lithium battery group |
| CN110571379A (en) * | 2019-09-03 | 2019-12-13 | 四川四美科技有限公司 | Low-temperature self-heating high-temperature heat dissipation lithium battery and control method |
-
2020
- 2020-01-14 CN CN202010036031.8A patent/CN111244569B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN208706726U (en) * | 2018-08-28 | 2019-04-05 | 深圳市国威科创新能源科技有限公司 | A kind of diamond type battery modules |
| CN209183615U (en) * | 2019-01-14 | 2019-07-30 | 李波 | A kind of automobile-used liquid cooling lithium battery group |
| CN110571379A (en) * | 2019-09-03 | 2019-12-13 | 四川四美科技有限公司 | Low-temperature self-heating high-temperature heat dissipation lithium battery and control method |
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111969275A (en) * | 2020-07-13 | 2020-11-20 | 广东工业大学 | Liquid cooling combines forced air cooling's battery cooling box |
| CN111816821B (en) * | 2020-09-11 | 2021-05-11 | 濉溪野草信息科技有限公司 | New energy automobile battery box |
| CN111816821A (en) * | 2020-09-11 | 2020-10-23 | 南京翔维物流设备制造有限公司 | New energy automobile battery box |
| CN112701380A (en) * | 2020-12-30 | 2021-04-23 | 上海亿边科技有限公司 | Energy storage battery thermal management design system |
| CN113291201B (en) * | 2021-05-07 | 2023-01-31 | 四川大学锦城学院 | Battery management system based on wireless communication |
| CN113291201A (en) * | 2021-05-07 | 2021-08-24 | 四川大学锦城学院 | Battery management system based on wireless communication |
| CN113849054A (en) * | 2021-08-31 | 2021-12-28 | 兰洋(宁波)科技有限公司 | Immersed liquid cooling heat dissipation system applied to data center |
| CN113849054B (en) * | 2021-08-31 | 2024-03-26 | 兰洋(宁波)科技有限公司 | Submerged liquid cooling heat dissipation system applied to data center |
| CN113851756A (en) * | 2021-09-23 | 2021-12-28 | 中原工学院 | Air cooling and liquid cooling hybrid battery heat management device and heat management method |
| CN114188635A (en) * | 2021-12-10 | 2022-03-15 | 傲普(上海)新能源有限公司 | Lithium ion battery energy storage system based on Tesla valve heat dissipation |
| CN114464917A (en) * | 2022-01-06 | 2022-05-10 | 刘运珍 | New energy automobile battery is with adjustable wind formula radiator |
| CN114696003A (en) * | 2022-03-03 | 2022-07-01 | 合肥工业大学 | Power battery liquid cooling module based on flexible micro porous flat tube |
| CN114824585A (en) * | 2022-04-08 | 2022-07-29 | 合肥召洋电子科技有限公司 | Battery package water cooling system |
| CN114824557A (en) * | 2022-04-22 | 2022-07-29 | 北京科技大学 | Battery package cooling system |
| CN116031540A (en) * | 2023-03-30 | 2023-04-28 | 北京中冠宝新能源科技有限责任公司 | New energy electricity storage equipment and management system thereof |
| CN116031540B (en) * | 2023-03-30 | 2023-06-06 | 北京中冠宝新能源科技有限责任公司 | New energy electricity storage equipment and management system thereof |
| CN116566124A (en) * | 2023-07-11 | 2023-08-08 | 苏州舍勒智能科技有限公司 | High-power linear motor with intelligent thermal management |
| CN116566124B (en) * | 2023-07-11 | 2023-10-03 | 苏州舍勒智能科技有限公司 | High-power linear motor with intelligent thermal management |
| CN117748003A (en) * | 2023-12-21 | 2024-03-22 | 湖南兆科动力新能源有限公司 | Lithium ion battery with composite heat dissipation structure |
| CN117748003B (en) * | 2023-12-21 | 2024-06-07 | 湖南兆科动力新能源有限公司 | Lithium ion battery with composite heat dissipation structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111244569B (en) | 2022-08-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111244569B (en) | Air cooling and liquid cooling combined battery heat dissipation device and method | |
| CN105742752B (en) | Lithium ion battery heat management system | |
| CN106450572A (en) | System and method for partitioned heat management based on lithium ion battery pack | |
| CN205194809U (en) | Electric automobile power battery's thermal management system and electric automobile | |
| CN102544567B (en) | Power battery module with liquid cooling system | |
| CN101000972B (en) | Thermal control device for battery of mixed power vehicle | |
| CN109149012B (en) | Temperature control system based on magnetic refrigeration technology, electric automobile battery pack thermal management system and method | |
| CN202127079U (en) | Water-cooling system of power battery pack of electric automobile based on thermoelectric cooling | |
| CN109888429B (en) | Negative Poisson ratio anti-collision temperature control integrated battery system and control method thereof | |
| CN114256535A (en) | Lithium ion battery thermal management system and method based on phase change material and mutually-embedded fins | |
| CN208939116U (en) | A kind of Vehicular dynamic battery group bidirectional equalization radiator | |
| CN111312954B (en) | Electric vehicle battery thermal management device and thermal management method | |
| CN108777336A (en) | Lithium battery pack heat management system | |
| CN214706046U (en) | Phase change and air cooling combined battery heat dissipation system | |
| CN206471453U (en) | A kind of battery pouring-basket cooling system | |
| CN106567769A (en) | Vehicle engine thermal management system and method based on thermoelectric generation technology | |
| CN113830314B (en) | Water-cooling heat dissipation system for range extender of oil-electricity hybrid unmanned aerial vehicle | |
| Qi et al. | Thermal management of power battery based on flexible Swiss roll type liquid cooling micro-channel | |
| CN109088123A (en) | A kind of new energy car battery group ventilation heat abstractor | |
| CN206250348U (en) | A kind of plug-in hybrid sanitation cart cooling system | |
| CN220732162U (en) | Electrical equipment and energy storage system | |
| CN220199109U (en) | Fill electric pile with control by temperature change is adjusted | |
| CN109244528A (en) | A kind of lithium ion battery energy-storage module | |
| CN206158835U (en) | Vehicle engine thermal management system based on thermoelectric generation technique | |
| Feng et al. | Analysis and optimization control of finned heat dissipation performance for automobile power lithium battery pack |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |