CN115528344A - Topological heat exchanger for heat dissipation of lithium ion battery and heat exchange performance detection device thereof - Google Patents
Topological heat exchanger for heat dissipation of lithium ion battery and heat exchange performance detection device thereof Download PDFInfo
- Publication number
- CN115528344A CN115528344A CN202211154865.4A CN202211154865A CN115528344A CN 115528344 A CN115528344 A CN 115528344A CN 202211154865 A CN202211154865 A CN 202211154865A CN 115528344 A CN115528344 A CN 115528344A
- Authority
- CN
- China
- Prior art keywords
- lithium ion
- ion battery
- heat exchanger
- topological
- heat
- 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.)
- Pending
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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M99/00—Subject matter not provided for in other groups of this subclass
- G01M99/005—Testing of complete machines, e.g. washing-machines or mobile phones
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/20—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/10—Geometric CAD
- G06F30/18—Network design, e.g. design based on topological or interconnect aspects of utility systems, piping, heating ventilation air conditioning [HVAC] or cabling
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
-
- 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
- H01M10/617—Types of temperature control for achieving uniformity or desired distribution of 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
-
- 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
- H01M10/6554—Rods or plates
-
- 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
-
- 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
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2119/00—Details relating to the type or aim of the analysis or the optimisation
- G06F2119/08—Thermal analysis or thermal optimisation
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2119/00—Details relating to the type or aim of the analysis or the optimisation
- G06F2119/14—Force analysis or force optimisation, e.g. static or dynamic forces
-
- 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
Abstract
The invention discloses a topological heat exchanger for heat dissipation of a lithium ion battery, which comprises two heat exchanger cold plates, wherein each heat exchanger cold plate comprises a substrate, a channel is arranged in each substrate, each channel is of a topological flow channel structure, each topological flow channel structure comprises four main channels, a plurality of secondary channels are generated between the main channels, two ends of each main channel are connected with a flow collecting groove, bosses are arranged on two sides of each substrate along the length direction, four flow channel through holes are correspondingly formed in the two bosses, one end of each flow channel through hole in each boss is in staggered arrangement with an inlet and an outlet, and the other end of each flow channel through hole in each boss is connected with the flow collecting groove. The topological heat exchanger for heat dissipation of the lithium ion battery can be effectively applied to heat management of the lithium ion battery, has high heat exchange efficiency, and meets the heat dissipation requirement of high-rate discharge of the lithium ion battery; the invention also discloses a heat exchange performance detection device which is high in working efficiency and capable of quickly and accurately detecting the heat exchange effect of the cold plate.
Description
Technical Field
The invention belongs to the technical field of lithium ion battery thermal management, relates to a topological heat exchanger for lithium ion battery heat dissipation, and further relates to a heat exchange performance detection device of the heat exchanger.
Background
The lithium ion battery as a recyclable charge-discharge battery has the advantages of long cycle life, high power density, low self-discharge rate and the like, and is widely applied to hybrid power/pure electric vehicles. However, the existence of ohmic resistance and electrochemical reaction during charging and discharging may cause heat accumulation in the battery, and if the heat is not diffused in time, the discharge performance and cycle life of the battery may be affected, and even thermal runaway may be caused. The heat dissipation of the lithium ion battery is mainly realized through a heat management design, the heat conductivity coefficient and the specific heat capacity are high, more heat is taken away by liquid cooling, and the key of liquid for cooling the battery is to complete the design of a heat exchanger structure.
At present, lithium ion batteries are widely applied to electronic equipment and automobiles, the lithium ion batteries often work under high discharge rate, and the batteries can generate a large amount of heat, so that a high-efficiency heat dissipation device is needed for heat management. The existing cold plate design method for liquid cooling and heat dissipation of the lithium ion battery generally adopts an empirical optimization method, and a designer firstly determines the shape of a cold plate channel according to experience, and then seeks the optimal parameters of the structures through an optimization technology so as to improve the cooling performance of the cold plate. Because the shape and the structure of the cold plate are preset, the optimization degree of the structural design of the cold plate is limited, the optimization effect is limited, the heat exchange efficiency of the cold plate of the heat exchanger is low, and the heat dissipation requirement of high-rate discharge of the lithium ion battery cannot be met; and lithium ion battery cold drawing design does not consider lithium ion battery's operating condition, and to the design of cold drawing under the condition of discharging according to lithium ion battery reality, the practicality is low.
Disclosure of Invention
The invention aims to provide a topological heat exchanger for heat dissipation of a lithium ion battery, and solves the problems that a cold plate for heat dissipation of the lithium ion battery in the prior art is low in heat exchange efficiency and cannot meet the heat dissipation requirement of high-rate discharge of the lithium ion battery.
The invention further aims to provide a heat exchange performance detection device of the topological heat exchanger for heat dissipation of the lithium ion battery.
The invention adopts a technical scheme that the topological heat exchanger for heat dissipation of the lithium ion battery comprises two heat exchanger cold plates, each heat exchanger cold plate comprises a substrate, a channel is arranged in the substrate, the channel is in a topological flow channel structure, the topological flow channel structure comprises four main channels, a plurality of secondary channels are generated between the main channels, two ends of each main channel are connected with a flow collecting groove, bosses are arranged on two sides of the substrate along the length direction, four flow channel through holes are correspondingly formed in the two bosses, one end of each flow channel through hole in each boss is in staggered arrangement with an inlet and an outlet, the other end of each flow channel through hole in each boss is connected with the flow collecting groove, two inlets and two outlets are arranged on each boss, and the position of the inlet on one boss corresponds to the position of the outlet on the other boss.
The present invention is also characterized in that,
the boss is also provided with a pressure gauge connecting through hole, and the side surface of the base plate is provided with four evenly distributed temperature measuring holes.
The channels are generated according to a topological optimization technology, an electrochemical field, a flow field and a temperature field are coupled, a topological optimization moving asymptote algorithm is adopted, and the optimization target of minimizing the average temperature of the lithium ion battery and the pressure drop of the cold plate is adopted, so that the materials in the cold plate of the heat exchanger are distributed in a self-adaptive mode to obtain the cold plate topological structure.
The heat exchange performance detection device comprises a constant-temperature water bath box, a peristaltic pump, a flow stopping valve, a flow dividing device, a core test area, a converging device and a liquid cooling box, wherein one end of the peristaltic pump is connected with the constant-temperature water bath box, the other end of the peristaltic pump is connected with the core test area through the flow dividing device, the core test area is connected with the liquid cooling box through the converging device, and the liquid cooling box is connected with the constant-temperature water bath box.
The present invention is also characterized in that,
the core test area adopts the topological heat exchanger for heat dissipation of the lithium ion battery, the two heat exchanger cold plates and the lithium ion Chi Baoguo heat insulation material, and the lithium ion battery and the two heat exchanger cold plates are arranged in the constant temperature box.
The core test area further comprises a temperature acquisition instrument, a lithium ion battery tester and pressure gauges, the lithium ion battery tester is connected with the positive electrode and the negative electrode of the lithium ion battery, the temperature acquisition instrument is connected with the pressure gauge connecting through hole and the temperature measuring hole through a thermocouple, and two ends of the pressure gauge are respectively connected with the two pressure gauge connecting through holes.
The flow stopping valve comprises a first flow stopping valve and a second flow stopping valve, wherein the first flow stopping valve is arranged between the peristaltic pump and the flow dividing device, and the second flow stopping valve is arranged between the liquid cooling tank and the constant-temperature water bath tank.
The flow dividing device comprises a first-stage three-way flow divider and two second-stage five-way flow dividers, each first-stage three-way flow divider comprises a first water inlet and two first water outlets, each second-stage five-way flow divider comprises a second water inlet and four second water outlets, the first water inlets are connected with the peristaltic pumps through pipelines, the two first water outlets are respectively connected with the second water inlets through pipelines, the four second water outlets of one second-stage five-way flow divider are correspondingly connected with the four inlets of one heat exchanger cold plate, and the four second water outlets of the other second-stage five-way flow divider are correspondingly connected with the four inlets of the other heat exchanger cold plate.
The confluence device comprises two second-level five-way junction collectors and one-level three-way junction collectors, each second-level five-way junction collector comprises four third water inlets and a third water outlet, each first-level three-way junction collector comprises two fourth water inlets and a fourth water outlet, eight third water inlets of the two second-level five-way junction collectors are respectively connected with eight outlets, fourth water inlets of the two first-level three-way junction collectors are respectively connected with third water outlets of the two second-level five-way junction collectors, and one fourth water outlet is connected with a liquid cooling box through a pipeline.
A first check valve is arranged on a pipeline between the peristaltic pump and the first water inlet.
The beneficial effects of the invention are: the topological heat exchanger for heat dissipation of the lithium ion battery, disclosed by the invention, applies a topological optimization technology to liquid cooling heat dissipation of the lithium ion battery, is an effective means for realizing heat management of the battery, has better heat transfer performance, can realize more efficient heat dissipation, meets the heat dissipation requirement of high-rate discharge of the lithium ion battery, improves the discharge performance and the cycle service life of the lithium ion battery, can realize heat management of the lithium ion battery under high-rate discharge, has high heat exchange performance, ensures that the lithium ion battery has better temperature uniformity, improves the cycle service life of the lithium ion battery, has lower pressure drop of a cold plate, reduces the consumed pump power, and saves the cost.
Drawings
Fig. 1 is a schematic structural diagram of a topological heat exchanger for heat dissipation of a lithium ion battery according to the present invention;
FIG. 2 is an assembly view of a lithium ion battery and a heat exchanger cold plate according to the present invention;
FIG. 3 is a schematic structural diagram of the heat exchange performance detection device for the cold plate of the heat exchanger according to the present invention;
FIG. 4 (a) is a schematic structural view of a primary three-way flow divider of the present invention;
FIG. 4 (b) is a schematic structural view of a two-stage five-way flow divider of the present invention;
FIG. 5 (a) is a schematic structural view of a two-stage five-way junction station of the junction device according to the present invention;
fig. 5 (b) is a schematic structural view of a primary three-way junction station of the junction device of the present invention.
In the figure, 1, a base plate, 2, a boss, 3, an inlet, 4, an outlet, 5, a collecting groove, 6, a channel, 7, a pressure meter connecting through hole, 8, a temperature measuring hole, 9, a lithium ion battery, 10, a heat exchanger cold plate, 11, a constant temperature water bath box, 12, a peristaltic pump, 13, a first check valve, 14, a first-stage three-way flow divider, 15, a second-stage five-way flow divider, 16, a second-stage five-way flow combiner, 17, a first-stage three-way flow combiner, 18, a liquid cooling box, 19, a second check valve, 20, a temperature collector, 21, a lithium ion battery tester, 22, a computer, 23, a pressure meter, 24, a first water inlet, 25, a first water outlet, 26, a second water inlet, 27, a second water outlet, 28, a third water inlet, 29, a third water outlet, 30, a fourth water inlet, 31, a fourth water outlet, 32 and a constant temperature box.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
The invention relates to a structure of a topological heat exchanger for heat dissipation of a lithium ion battery, which comprises two heat exchanger cold plates 10, wherein each heat exchanger cold plate 10 comprises a substrate 1, a channel 6 is arranged in the substrate 1, the channel 6 is of a topological flow channel structure, the topological flow channel structure comprises four main channels, a plurality of secondary channels are formed between the main channels, two ends of the four main channels are connected with a flow collecting groove 5, bosses 2 are arranged at two sides of the substrate 1 along the length direction, four flow channel through holes are correspondingly formed in the two bosses 2, one end of each flow channel through hole in each boss 2 is provided with an inlet 3 and an outlet 4 in a staggered manner, the other end of each flow channel through hole is connected with the flow collecting groove 5, two inlets 3 and two outlets 4 are arranged on each boss 2, and the position of the inlet 3 on one boss 2 corresponds to the position of the outlet 4 on the other boss 2. The channel 6 is generated according to a topological optimization technology, by coupling an electrochemical field, a flow field and a temperature field, adopting a topological optimization moving asymptote algorithm and taking the average temperature of the lithium ion battery and the pressure drop minimization of the cold plate as an optimization target, the materials in the cold plate 10 of the heat exchanger are distributed in a self-adaptive manner to obtain a cold plate topological structure, and a topological flow channel structure with the optimal battery temperature uniformity in the discharging process of the lithium ion battery is obtained.
Boss 2 still is equipped with pressure gauge connect the through hole 7, and 1 side of base plate is equipped with the temperature measurement hole 8 of four equipartitions, and the diameter of temperature measurement hole 8 is 1mm, and the degree of depth is 5mm, and is 1mm with the distance of passageway 6, and base plate 1 and the combination of boss 2 become both ends and have the closed independent space of access & exit, and the height of passageway 6 is 4mm, and upper and lower wall thickness respectively is 2mm, and heat exchanger cold plate 10 highly is 8mm.
As shown in fig. 2, the substrate 1 and the bosses 2 are combined to form heat exchanger cold plates 10 with inlets and outlets at two ends, the lithium ion battery 9 is arranged between the two heat exchanger cold plates 10, the anode and the cathode of the lithium ion battery 9 extend out of the two heat exchanger cold plates 10, and the lithium ion battery 9 is clamped and fixed by the bosses 2 at two sides of the substrate 1.
The working principle of the topological heat exchanger for the heat dissipation of the lithium ion battery is as follows: the optimization target is minimized by the average temperature of the lithium ion battery and the pressure drop of the cold plate, the topological structure of the cold plate of the lithium ion battery is obtained, the cold plate of the heat exchanger of the lithium ion battery is printed through 3D, the structure can produce better temperature uniformity, lower pressure drop and higher heat exchange capacity, the service life of the lithium ion battery can be prolonged, the practicability is higher, the heat dissipation requirement of the lithium ion battery under high-rate discharge can be met, and the lithium ion battery can work within an allowable working temperature range.
The multi-inlet multi-outlet lithium ion battery cold plate is designed by adopting a topological optimization technology, an electrochemical field, a flow field and a temperature field are coupled through numerical simulation, a topological structure of the lithium ion battery cold plate is obtained by adopting a topological optimization moving asymptote algorithm and taking the average temperature of the lithium ion battery and the pressure drop of the cold plate as optimization targets, and the lithium ion battery heat exchanger cold plate is printed by 3D. The heat exchanger cold plate provided by the invention is provided with four inlets and four outlets which are arranged in a staggered manner, the heat exchange performance of the cold plate can be improved and the temperature uniformity of the lithium ion battery can be obviously improved due to the arrangement of the inlets and the outlets and the distribution condition of the channels, the heat dissipation efficiency is high, the heat dissipation requirement of the lithium ion battery under high-rate discharge can be met, and the lithium ion battery can work within an allowable working temperature range. The invention adopts the topological optimization technical design, gets rid of the limitation of size optimization, realizes higher design freedom degree, wider design space and higher flexibility, adaptively arranges the cold plate runner according to the heat generated in the high-rate discharge process of the lithium ion battery, generates an unpredictable novel structure, and can generate better temperature uniformity, lower pressure drop and greatly improve the heat exchange capability.
The heat exchange performance detection device for the topological heat exchanger for lithium ion battery heat dissipation comprises a constant temperature water bath box 11, a peristaltic pump 12, a flow stopping valve, a flow dividing device, a core test area, a converging device and a liquid cooling box 18, wherein one end of the peristaltic pump 12 is connected with the constant temperature water bath box 11, the other end of the peristaltic pump is connected with the core test area through the flow dividing device, the core test area is connected with the liquid cooling box 18 through the converging device, and the liquid cooling box 18 is connected with the constant temperature water bath box 11, as shown in fig. 3.
The core test area adopts the topological heat exchanger for heat dissipation of the lithium ion battery, the core test area comprises two heat exchanger cold plates 10 and the lithium ion battery 9, and the whole heat exchanger cold plate 10 and the lithium ion battery 9 are wrapped by heat insulation materials, so that heat generated by the lithium ion battery 9 is completely dissipated by the two heat exchanger cold plates 10; the lithium ion battery 9 and the two heat exchanger cold plates 10 are arranged in the constant temperature box 32, and the ambient temperature around the lithium ion battery 9 is kept constant.
The lithium ion battery temperature and temperature measuring device further comprises a temperature acquisition instrument 20, a lithium ion battery tester 21 and pressure gauges 23, wherein the lithium ion battery tester 21 is connected with the positive electrode and the negative electrode of the lithium ion battery 9 to adjust the discharge rate of the lithium ion battery 9, the lithium ion battery 9 discharges to generate heat flow, the temperature acquisition instrument 20 is connected with the pressure gauge connecting through hole 7 and the temperature measuring hole 8 through a thermocouple, and two ends of the pressure gauge 23 are respectively connected with the two pressure gauge connecting through holes 7.
The stop valve comprises a first stop valve 13 and a second stop valve 19, wherein the first stop valve 13 is arranged between the peristaltic pump 12 and the flow dividing device, and the second stop valve 19 is arranged between the liquid cooling tank 18 and the constant temperature water bath tank 11.
As shown in fig. 4 (a) and 4 (b), the flow dividing device includes a primary three-way flow divider 14 and two secondary five-way flow dividers 15, the primary three-way flow divider 14 includes a first water inlet 24 and two first water outlets 25, each secondary five-way flow divider 15 includes a second water inlet 26 and four second water outlets 27, the first water inlet 24 is connected to the peristaltic pump 12 through a pipe, the first check valve 13 is disposed on the pipe between the peristaltic pump 12 and the first water inlet 24, the two first water outlets 25 are respectively connected to the second water inlets 26 through pipes, the four second water outlets 27 of one secondary five-way flow divider 15 are correspondingly connected to the four inlets 3 of one of the cold plates 10, and the four second water outlets 27 of the other secondary five-way flow divider 15 are correspondingly connected to the four inlets 3 of the other cold plate 10.
As shown in fig. 5 (a) and 5 (b), the confluence device includes two secondary five-way confluence devices 16 and a primary three-way confluence device 17, each secondary five-way confluence device 16 includes four third water inlets 28 and a third water outlet 29, the primary three-way confluence device 17 includes two fourth water inlets 30 and a fourth water outlet 31, eight third water inlets 28 of the two secondary five-way confluence devices 16 are respectively connected to the eight outlets 4, the fourth water inlets 30 of the two primary three-way confluence devices 17 are respectively connected to the third water outlets 29 of the two secondary five-way confluence devices 16, and a fourth water outlet 31 is connected to the liquid cooling tank 18 through a pipeline.
The heat exchange performance detection device for the topological heat exchanger for heat dissipation of the lithium ion battery has the working principle that the heat exchange performance detection device is used for connecting an external pipeline and the heat exchanger cold plates through the flow dividing device and the flow converging device, so that uniform flow distribution of inlets and outlets of the two multi-inlet multi-outlet heat exchanger cold plates is realized, the heat exchange effect of the cold plates can be rapidly detected by the heat exchanger cold plate heat exchange performance detection device, the heat exchanger cold plate and cold plate heat exchange performance detection experimental device is convenient to operate, simple in structure and low in cost, the working efficiency is greatly improved, and the heat exchange performance detection experimental device is an effective means for realizing heat management of the lithium ion battery.
The working process of the heat exchange performance detection device of the topological heat exchanger for the heat dissipation of the lithium ion battery comprises the following steps: the cooling liquid enters a first-stage three-way flow divider 14 through a first check valve 13 under the drive of a peristaltic pump 12, then is divided into eight branches entering two second-stage five-way flow dividers 15, flows into a heat exchanger cold plate 10 from eight inlets 3 of upper and lower bosses 2, then flows out from eight outlets 4, is collected to a first-stage three-way flow combiner 17 through two second-stage five-way flow combiners 16 and then flows into a liquid cooling box 18, and if a second check valve 19 is opened, the cooling liquid flows back to a constant temperature water bath box 11 from the liquid cooling box 18 to realize circulation; in the process, the lithium ion battery tester 21 is started, the required discharge rate is adjusted, the lithium ion battery 9 starts to discharge, heat flow is generated, and the temperature is increased; after the pressure gauge 23 and the temperature acquisition instrument 20 are stable, each temperature value and each pressure value can be read, the cooling liquid flowing out of the heat exchanger cold plate 10 enters the liquid cooling tank 18, the liquid cooling tank 18 can read the temperature of the liquid in the tank, and when the liquid cooling tank is cooled to the inlet temperature, the second stop valve 19 is opened, so that the cooling liquid in the liquid cooling tank 18 flows back to the constant temperature water bath tank 11.
The temperature acquisition instrument 20 respectively measures the temperature of cooling liquid at an inlet and an outlet of a cold plate 10 of the heat exchanger and the temperature of four temperature measuring holes, and calculates the temperature of a flow-solid interface in a cold plate channel according to the temperatures of the four temperature measuring holes and a one-dimensional heat conduction law so as to calculate the convective heat transfer coefficient of the cold plate of the heat exchanger; the pressure gauge 23 measures the pressure drop of the fluid at the inlet and the outlet, and then the flow resistance parameter of the cold plate of the heat exchanger is obtained.
The invention relates to a heat exchange performance detection device of a topological heat exchanger for heat dissipation of a lithium ion battery, which comprises a constant temperature water bath box, a peristaltic pump, a flow distribution device, a confluence device, a liquid cooling box and a core test area, wherein the core test area comprises two topological heat exchanger cold plates, the lithium ion battery fixed between the two heat exchanger cold plates, a temperature acquisition instrument, a lithium ion battery tester and a pressure gauge, the peristaltic pump is connected between the constant temperature water bath box and the core test area, the other end of the test area is connected with the liquid cooling box through a pipeline, and the flow distribution device and the confluence device are used for connecting an external pipeline and the heat exchanger cold plates, so that uniform flow distribution of inlets and outlets of the two multi-inlet multi-outlet heat exchanger cold plates is realized. The device for detecting the heat exchange performance of the cold plate of the heat exchanger has the advantages of simple structure, convenience in operation, low cost and high working efficiency, can quickly detect the heat exchange effect of the cold plate of the heat exchanger, and is an effective means for realizing the heat management of the lithium ion battery.
The topological heat exchanger for heat dissipation of the lithium ion battery can realize heat management of the lithium ion battery under high-rate discharge, has high heat exchange performance, enables the lithium ion battery to have better temperature uniformity, prolongs the cycle service life of the lithium ion battery, has lower pressure drop of a cold plate, reduces the consumed pump power and saves the cost. The heat exchanger cold plate with the topological design can be effectively applied to heat management of the lithium ion battery, and the heat exchange performance detection experimental device for the low-cost heat exchanger cold plate provided by the invention is high in working efficiency and can be used for rapidly and accurately detecting the heat exchange effect of the cold plate.
Claims (10)
1. A topological heat exchanger for lithium ion battery radiating, a serial communication port, including two heat exchanger cold drawing (10), every heat exchanger cold drawing (10) includes base plate (1), lay in base plate (1) passageway (6), passageway (6) are topological runner structure, topological runner structure includes four main passageways, a plurality of subchannels are generated between the main passageway, collecting groove (5) are all connected at four main passageway both ends, base plate (1) sets up boss (2) along length direction both sides, correspond on two boss (2) and set up four runner through-holes, runner through-hole one end staggered arrangement entry (3) and export (4) on every boss (2), collecting groove (5) are connected to the other end, set up two entry (3) and two export (4) on every boss (2), the position of entry (3) corresponds the position of export (4) on another boss (2) on boss (2).
2. The topological heat exchanger for lithium ion battery heat dissipation according to claim 1, wherein the channels (6) are generated according to a topological optimization technique, and the cold plate topology is obtained by coupling an electrochemical field, a flow field and a temperature field, adopting a topological optimized moving asymptote algorithm, and taking the average temperature of the lithium ion battery and the pressure drop of the cold plate as optimization targets, and performing self-adaptive distribution of materials in the cold plate (10) of the heat exchanger.
3. The topological heat exchanger for heat dissipation of lithium ion batteries according to claim 1, wherein the boss (2) is further provided with a pressure gauge connecting through hole (7), and the side surface of the substrate (1) is provided with four uniformly distributed temperature measuring holes (8).
4. A heat transfer performance detection device for radiating topological heat exchanger of lithium ion battery, its characterized in that, including constant temperature water bath (11), peristaltic pump (12), flow stopping valve, diverging device, core test district, collection flow device and liquid cooling case (18), constant temperature water bath (11) are connected to peristaltic pump (12) one end, and the other end passes through diverging device and connects the core test district, and the core test district is through converging device connection liquid cooling case (18), and constant temperature water bath (11) are connected in liquid cooling case (18).
5. The device for detecting the heat exchange performance of the topological heat exchanger for dissipating heat of the lithium ion battery according to claim 4, wherein the core test area adopts the topological heat exchanger for dissipating heat of the lithium ion battery according to claim 3, two heat exchanger cold plates (10) and the lithium ion battery (9) of the topological heat exchanger are wrapped with a heat insulating material, and the lithium ion battery (9) and the two heat exchanger cold plates (10) are placed in the thermostat (32).
6. The device for detecting the heat exchange performance of the topological heat exchanger for heat dissipation of the lithium ion battery as claimed in claim 5, wherein the core test area further comprises a temperature acquisition instrument (20), a lithium ion battery tester (21) and a pressure gauge (23), the lithium ion battery tester (21) is connected with the positive electrode and the negative electrode of the lithium ion battery (9), the temperature acquisition instrument (20) is connected with the pressure gauge connecting through hole (7) and the temperature measuring hole (8) through a thermocouple, and two ends of the pressure gauge (23) are respectively connected with the two pressure gauge connecting through holes (7).
7. The device for detecting the heat exchange performance of the topological heat exchanger for heat dissipation of the lithium ion battery according to claim 6, wherein the stop valve comprises a first stop valve (13) and a second stop valve (19), wherein the first stop valve (13) is arranged between the peristaltic pump (12) and the flow dividing device, and the second stop valve (19) is arranged between the liquid cooling tank (18) and the constant temperature water bath tank (11).
8. The device for detecting the heat exchange performance of the topological heat exchanger for dissipating heat of the lithium ion battery according to claim 6, wherein the flow dividing device comprises a primary three-way flow divider (14) and two secondary five-way flow dividers (15), the primary three-way flow divider (14) comprises a first water inlet (24) and two first water outlets (25), each secondary five-way flow divider (15) comprises a second water inlet (26) and four second water outlets (27), the first water inlet (24) is connected with the peristaltic pump (12) through a pipeline, the two first water outlets (25) are respectively connected with the second water inlet (26) through pipelines, the four second water outlets (27) of one secondary five-way flow divider (15) are correspondingly connected with the four inlets (3) of one heat exchanger cold plate (10), and the four second water outlets (27) of the other secondary five-way flow divider (15) are correspondingly connected with the four inlets (3) of the other heat exchanger cold plate (10).
9. The heat exchange performance detection device for the topological heat exchanger for heat dissipation of the lithium ion battery according to claim 8, wherein the confluence device comprises two secondary five-way confluence devices (16) and one primary three-way confluence device (17), each secondary five-way confluence device (16) comprises four third water inlets (28) and one third water outlet (29), each primary three-way confluence device (17) comprises two fourth water inlets (30) and one fourth water outlet (31), eight third water inlets (28) of the two secondary five-way confluence devices (16) are respectively connected with eight outlets (4), the fourth water inlets (30) of the two primary three-way confluence devices (17) are respectively connected with the third water outlets (29) of the two secondary five-way confluence devices (16), and one fourth water outlet (31) is connected with the liquid cooling tank (18) through a pipeline.
10. The device for detecting the heat exchange performance of the topological heat exchanger for lithium ion battery heat dissipation according to claim 8, characterized in that a first stop valve (13) is arranged on a pipeline between the peristaltic pump (12) and the first water inlet (24).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211154865.4A CN115528344A (en) | 2022-09-21 | 2022-09-21 | Topological heat exchanger for heat dissipation of lithium ion battery and heat exchange performance detection device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211154865.4A CN115528344A (en) | 2022-09-21 | 2022-09-21 | Topological heat exchanger for heat dissipation of lithium ion battery and heat exchange performance detection device thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115528344A true CN115528344A (en) | 2022-12-27 |
Family
ID=84700515
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211154865.4A Pending CN115528344A (en) | 2022-09-21 | 2022-09-21 | Topological heat exchanger for heat dissipation of lithium ion battery and heat exchange performance detection device thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115528344A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116988979A (en) * | 2023-06-27 | 2023-11-03 | 山东亿宁环保科技有限公司 | Claw type vacuum pump partition plate structure |
-
2022
- 2022-09-21 CN CN202211154865.4A patent/CN115528344A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116988979A (en) * | 2023-06-27 | 2023-11-03 | 山东亿宁环保科技有限公司 | Claw type vacuum pump partition plate structure |
| CN116988979B (en) * | 2023-06-27 | 2024-04-02 | 山东亿宁环保科技有限公司 | Claw type vacuum pump partition plate structure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109524741B (en) | Liquid cooling plate combined with refrigerating sheet, power battery heat dissipation liquid cooling system and control method | |
| CN111403850A (en) | Dynamic liquid cooling thermal management system for power battery | |
| CN109149009B (en) | High-efficiency low-temperature-difference integrated liquid-cooled battery system | |
| CN112886093A (en) | Active control type full-immersion liquid cooling power battery thermal management system | |
| CN108923097B (en) | Magnetic fluid liquid cooling plate, liquid cooling system composed of magnetic fluid liquid cooling plate and control method | |
| CN110994072A (en) | Parallel type multi-channel liquid cooling structure for lithium battery and lithium battery | |
| CN111864302A (en) | Power battery pack heat dissipation management system | |
| CN115528344A (en) | Topological heat exchanger for heat dissipation of lithium ion battery and heat exchange performance detection device thereof | |
| CN109030557A (en) | A kind of electric automobile power battery temperature control plate testing device for heat transferring performance and method | |
| CN115000578A (en) | Battery module, battery pack and thermal management system | |
| CN211428223U (en) | Isolated battery module liquid cooling system | |
| CN113410194B (en) | M-type micro-channel heat exchanger based on composite phase change material, detection device and detection method | |
| CN212571125U (en) | Power battery pack heat dissipation management system | |
| CN212136533U (en) | Electric motor car battery thermal management device | |
| CN108232361B (en) | Heat dissipation system of power battery pack and heat dissipation system of power battery | |
| CN208189742U (en) | Battery case liquid-cooling heat radiation structure | |
| CN113624043A (en) | Temperature-equalizing distributed parallel micro-flow-channel heat exchanger and application thereof | |
| CN108011142B (en) | Measure device of heat transfer coefficient of electric core or module | |
| CN206353593U (en) | A kind of spray liquid cooling system of high power battery group | |
| CN219917315U (en) | Novel thermal management battery pack | |
| CN216288643U (en) | Liquid cooling plate device of power battery | |
| CN115420131B (en) | Center differential heat exchanger and heat exchange performance detection device thereof | |
| CN219801021U (en) | Battery module and liquid cooling energy storage system | |
| CN217848079U (en) | Blade electricity core module, battery package and power device | |
| CN220253313U (en) | Liquid cooling type energy storage 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 |