CN111092277A - Honeycomb type micro-channel cooling plate for battery thermal management and application thereof - Google Patents
Honeycomb type micro-channel cooling plate for battery thermal management and application thereof Download PDFInfo
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- CN111092277A CN111092277A CN201911411636.4A CN201911411636A CN111092277A CN 111092277 A CN111092277 A CN 111092277A CN 201911411636 A CN201911411636 A CN 201911411636A CN 111092277 A CN111092277 A CN 111092277A
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- 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
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- 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
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- 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
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- 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
- H01M10/64—Heating or cooling; Temperature control characterised by the shape of the cells
- H01M10/647—Prismatic or flat cells, e.g. pouch cells
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- 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
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- 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
- H01M10/6555—Rods or plates arranged between the cells
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- 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
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- 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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2220/00—Batteries for particular applications
- H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The invention discloses a honeycomb-type microchannel cooling plate for battery thermal management, which comprises a body and a plate cover, wherein the plate cover comprises a cooling plate body and a cover plate, and the left side and the right side of the upper side of the cooling plate body are respectively provided with a water inlet pipe interface; the left side and the right side of the lower side are respectively provided with a water outlet pipe interface; the water inlet pipe interfaces are respectively arranged on two sides of the first main flow channel, the water outlet pipe interfaces are respectively arranged on two sides of the second main flow channel, and the first main flow channel and the second main flow channel are respectively connected with the parallel straight channels; the parallel straight channels are respectively connected with a honeycomb-shaped channel network. The cooling plate can make the cooling liquid more uniformly distributed in the battery cooling plate, reduce the temperature difference of each part of the battery cooling plate, reduce the highest temperature value and reduce the pressure drop of the working medium, can effectively solve the heat dissipation problem of the square battery, and is beneficial to improving the performance of the battery and prolonging the service life of the battery.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to the field of heat dissipation equipment and batteries, in particular to a honeycomb type micro-channel cooling plate for battery heat management and application thereof, wherein the honeycomb type micro-channel cooling plate is suitable for square battery heat management and other square batteries and electronic products.
[ background of the invention ]
With the increasing global energy crisis and the environmental pollution problem, the development of electric vehicles is particularly rapid. As a key part of the electric automobile, the performance of the power battery determines the performance of the whole electric automobile. An important factor restricting the development of the power battery at present is the thermal management problem of the power battery, and a battery thermal management system has a crucial influence on the performance of the power battery. The existing heat management systems mainly use air cooling, liquid cooling, Phase Change Material (PCM) cooling and heat pipe cooling. The battery thermal management mode in the market is mainly air cooling, and the cooling plate using liquid cooling has a small heat dissipation mode. Liquid cooling is a cooling method for dissipating heat of a battery pack by using a fluid with relatively high thermal conductivity as a heat transfer medium, and a cooling plate with a liquid cooling function has the advantages of good heat transfer effect, high thermal conductivity, capability of being used for cooling and heating at the same time and the like, and is widely concerned in thermal management application. The cooling plate also has a plurality of defects, and the improvement is mainly on the number of the plate channels, the channel flow direction, the channel width and the structure. The main methods adopted are as follows: the structure of the board passageway is rationally set up, increase heat radiating area changes passageway quantity, adopts the mode of active cooling to dispel the heat or designs the arrangement form to the board, makes the battery carry out effectual heat dissipation. Cooling plate heat dissipation is a solution that is well suited for battery thermal management. The channel structure mainly comprises a snake-shaped channel liquid cooling plate, a multi-channel snake-shaped flow field cooling plate, a double-inlet and double-outlet liquid cooling plate structure, a spiral channel liquid cooling plate and a straight channel liquid cooling plate. The cooling plates with the channel structures have effective heat dissipation effects in battery heat management, but the cooling plates with different channel structures also have some defects in the heat exchange area, pressure drop and distribution uniformity of cooling liquid.
[ summary of the invention ]
The present invention is directed to overcome the above-mentioned shortcomings of the prior art, and to provide a honeycomb-type microchannel cooling plate for battery thermal management, which can enhance the heat dissipation effect of the cooling plate in a dual-in and dual-out mode.
It is another object of the present invention to provide a battery pack having a cell thermal management structure.
In order to achieve the purpose, the technical scheme of the invention is as follows: a honeycomb type micro-channel cooling plate for battery thermal management comprises a body and a plate cover, and comprises a cooling plate body and a cover plate, wherein the left side and the right side of the upper side of the cooling plate body are respectively provided with a water inlet pipe interface; the left side and the right side of the lower side are respectively provided with a water outlet pipe interface; the water inlet pipe interfaces are respectively arranged on two sides of the first main flow channel, the water outlet pipe interfaces are respectively arranged on two sides of the second main flow channel, and the first main flow channel and the second main flow channel are respectively connected with the parallel straight channels; the parallel straight channels are respectively connected with a honeycomb-shaped channel network.
The flow channel network is formed by arranging a plurality of hexagonal micro-channel units, adjacent micro-channel units share a common flow channel pipe, and the units are communicated with each other through the common flow channel to form the flow channel network, so that a honeycomb shape is formed. The parallel straight channels are connected with hexagonal channels similar to honeycombs, and the cross section of each channel is square. The adjacent hexagonal channels are designed with a common flow channel, the units are mutually communicated through the common flow channel to form a flow channel network, working media enter the flow channel through an external water pump and can freely flow among the units, and the cooling plate structurally adopting a honeycomb type flow channel network model increases the heat exchange area compared with a cooling plate adopting a snake-shaped channel and a straight channel under the condition that the number of inlets of the main flow channel is unchanged. The hexagonal flow channels are used for unitizing the plates, and the flow channels are distributed more uniformly in an intricate and crossed mode, so that fluid flows more uniformly in the cooling plate, heat is taken away uniformly, and the purpose of uniform temperature heat dissipation is achieved. The distance between any two communicating channels of the cooling plate is short, the flow channels are of a special structure of hexagonal unit grids, so that any point in the cooling plate is surrounded by more than four short flow channels, heat of any point in the cooling plate can be taken away through water circulation in more flow channels, and the cooling effect is improved.
The first main flow channel and the second main flow channel have larger inner diameters than those of the honeycomb-shaped flow channel network, so that the cooling liquid flows into the main flow channels and has smaller resistance and larger flow rate relative to the channel of the cooling liquid flowing into the honeycomb-shaped flow channel network, and each flow channel of the flow channel network is communicated with each other and has the same zigzag structure, so that the flow channel has similar resistance to the flow of the cooling liquid.
The micro-channel unit in the channel network enables fluid to flow out through a single public channel pipe instead of flowing in and out from one end, the public channel pipes are communicated with each other through the micro-channel, the joint of the public channel pipe and the micro-channel is provided with a certain bend, and the bend of the micro-channel unit is made into a bent pipe.
The R/d range of the curvature radius of the bend to the pipe diameter is 2-4; the height-to-width ratio h/b of the elbow with the rectangular section ranges from 1 to 2; the angle of rotation theta is in the range of 20 deg. -60 deg..
The cross section of the main first main flow channel and the main second main flow channel can be square, circular or rectangular, or the type of the channels can be selected and processed as required.
The joint of the water inlet pipe joint and the water outlet pipe joint is a quick-inserting joint or a pagoda joint. Wherein, the bore size of water supply connector, water connectors, inlet, liquid outlet, unit runner is set for according to actual demand.
All the flow channels are integrated with the cooling plate body, and can be formed by punching, machining and forming of a precision lathe, machining and forming of laser and the like of an aluminum plate.
The length and width of the cross section of the micro flow channel are 0.2 mm-5 mm.
The plate cover has the same overall dimension as the cooling plate body, covers the outer side of the cooling plate body and is used for sealing the cooling plate body.
The cooling plate body and the plate cover are made of materials including but not limited to aluminum alloy, and the cooling plate body and the plate cover can be sealed by brazing an aluminum plate, laser welding an aluminum plate or epoxy resin sealant and the like.
The cooling liquid includes, but is not limited to, a mixture cooling liquid of ethanol and water.
The invention can utilize comsol multi-physical-field simulation software to simulate the model, divide the calculation domain into a liquid fluid domain and a cooling plate solid domain, set the thermal boundary condition of the cooling plate, and define the contact surface of the cooling plate and the battery to load uniform heat flux 1500W/m2The other 5 side surfaces are cooled by natural convection of air, the radiation heat exchange is neglected, and the ambient temperature is 25 ℃; because the battery is arranged in the battery pack and the air flow is poor, the convective heat transfer coefficient is assumed to be 2W/(m ^ 2.K), water at 25 ℃ is taken as a cooling working medium, the mass flow is controlled to be constant, the speed is set to be 0.0625m/s, COMSOL simulates that the inlet and outlet pressure difference of a honeycomb type channel structure is 911.88Pa, and the inlet and outlet pressure difference of a snake type channel structure is 1275 Pa.
The utility model provides a group battery with pond heat management structure, including the battery cell with be used for the honeycomb type microchannel cooling plate of battery heat management, the contact surface of the honeycomb type microchannel cooling plate that is used for battery heat management is fixed with battery surface contact, paints heat dissipation silicone grease between contact surface and battery surface for strengthen the heat dissipation, can make cooling plate and battery effective and the laminating, can play the cushioning effect again, prevent rigidity friction or extrusion deformation. The heat generated by the battery during operation is fully transferred to the cooling plate through the heat dissipation silicone grease, the fluid continuously circulates through the water inlet pipe and the water outlet pipe, and the heat of the battery is directly taken away through the water circulation in the cooling plate, so that the battery is ensured to be in a good working environment.
The invention embeds the flow channel into the cooling plate, and has simple and reasonable structure and convenient installation. The battery is tightly attached to the cooling plate, and adverse effects such as deformation and tensile crack of the cooling plate are avoided.
Compared with the prior art, the invention has the advantages and beneficial effects that: (1) the cooling plate is a honeycomb-type unit flow channel structure, so that the flow channel density is increased, the heat exchange area is increased, and the temperature of the battery is effectively reduced; (2) compared with a serpentine channel cooling plate, the honeycomb channel cooling plate has lower pressure drop, and the smaller the pressure drop, the less the consumed pump power, so that the energy loss of the battery for cooling can be reduced, and the better battery endurance effect can be achieved; (3) the structure has good heat dissipation uniformity, is beneficial to the heat dissipation of the charge and discharge state of the battery, can obtain more uniform temperature distribution of the battery, and is beneficial to improving the performance of the battery and prolonging the service life of the battery.
[ description of the drawings ]
FIG. 1 is a schematic structural view of a cooling plate body in a honeycomb-type microchannel cooling plate for battery thermal management according to the present invention;
FIG. 2 is a schematic structural diagram of a plate cover in the honeycomb-type microchannel cooling plate for battery thermal management according to the present invention;
fig. 3 is a schematic structural view of a battery pack having a cell thermal management structure according to the present invention (a cooling plate is attached between two unit cells on both surfaces thereof);
fig. 4 is a schematic structural view of a battery pack having a cell thermal management structure according to the present invention (a cooling plate is attached to a side surface of the battery pack composed of a plurality of unit cells);
fig. 5 is a schematic structural view of the honeycomb-type microchannel cooling plate for battery thermal management according to the present invention (the cooling plate body and the plate cover are half-fitted).
Wherein, 1, 3 are water inlet pipe connectors, 2 is a first main flow channel, 2, 8 is a second main flow channel, 4 is a parallel straight channel, 5 is a cooling plate body, 6 is a honeycomb type flow channel net, 7, 9 are water outlet pipe connectors, 10 is a cover plate, 11 is a single battery, and 12 is a cooling plate.
[ detailed description ] embodiments
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
A honeycomb type micro-channel cooling plate for battery thermal management improves heat dissipation efficiency in a double-in and double-out mode and meets heat dissipation requirements of batteries and electronic products. As shown in fig. 1, the honeycomb-type microchannel cooling plate for battery thermal management includes a cooling plate body 5 and a cover plate 10. The left side and the right side of the upper side of the cooling plate body 5 are respectively provided with a water inlet pipe interface (1, 3) which can be square; the left side and the right side of the lower side are respectively provided with a water outlet pipe interface (7, 9). The water inlet pipe connectors (1, 3) are respectively arranged at two sides of the first main flow channel 2 and used for supplying water. And the water outlet pipe connectors (7 and 9) are respectively arranged at two sides of the second main flow channel 8 and are used for discharging water. The first main flow channel 2 and the second main flow channel 8 are connected with a number of parallel straight channels 4, respectively. The parallel straight channels 4 are respectively connected with a flow channel network 6 which forms a honeycomb shape. The cooling liquid is input into a first main flow channel 2 through water inlet pipe connectors (1 and 3) by an external water pump, enters honeycomb micro-channels in a flow channel network 6 through a plurality of parallel straight channels 4 connected with the flow channel network 6 to freely flow, finally converges into a second main flow channel 8 through the parallel straight channels 4, and is discharged through water outlet pipe connectors (7 and 9), so that the liquid circulation flow is realized, and the aim of rapid heat dissipation is fulfilled. The flow channel network 6 is formed by arranging a plurality of hexagonal micro-channel units, adjacent micro-channel units share a common flow channel pipe, and all the units are mutually communicated through the common flow channel to form a honeycomb-like structure. The structure enables the common runner pipes between the adjacent micro-runner units to be communicated, the cross sections of the common runner pipes can be square or circular, and the honeycomb-shaped runner net increases the heat exchange area compared with a cooling mode of a snake-shaped channel and a straight channel under the condition that the number of the first main runner channel 2 and the second main runner channel 8 is unchanged, thereby effectively reducing the temperature of the battery.
The first main flow channel 2 and the second main flow channel 8 have a larger inner diameter than the honeycomb-type flow channel network 6, so that the coolant flowing into the main flow channels has smaller resistance and larger flow rate than the coolant flowing into the honeycomb-type flow channel network 6, and each adjacent flow channel in the flow channel network 6 is communicated with each other and has the same zigzag structure, and has similar resistance to the flow of the coolant; in addition, the honeycomb-type flow channel network 6 and the first main flow channel 2 and the second main flow channel 8 can be provided with 10 connected water inlets and water outlets, when fluid flows to the second unit cell in the flow channel network 6, the channels are changed into 9, so that the flow of the fluid is reduced, the flow of the inlet is kept unchanged, more cooling liquid flows to the middle of the main flow channel, and the middle honeycomb-type interface is ensured to have enough cooling liquid to flow in, so that the cooling liquid cannot flow away in one flow channel quickly. When the whole flow channel is fully filled with the cooling liquid for a period of time, the flow of the fluid in and out reaches the balance, and the cooling liquid in the cooling plate fills the whole channel and flows in each channel at any time.
The micro-channel unit in the honeycomb type flow generating channel network 6 ensures that fluid flows out through one channel instead of entering and exiting from one end, the public channel pipes of the micro-channel unit are communicated with each other through the micro-channel, the joint of the public channel pipes and the micro-channel is provided with a certain bend, the bend of the micro-channel unit is made into a bent pipe, and the resistance coefficient zeta of the bend depends on the corner theta of the bent pipe and the ratio R/d (or R/b) of the curvature radius and the pipe diameter of the bent pipe; the elbow with the rectangular section also has an aspect ratio h/b (R is the curvature radius of the elbow, d is the pipe diameter, h is the height of the elbow with the rectangular section, and b is the width of the elbow with the rectangular section). Wherein, the ratio R/d (or R/b) of the curvature radius and the pipe diameter is in the range of 2-4; the bent pipe with the rectangular section also has the height-to-width ratio h/b within the range of 1-2; the angle of rotation theta is in the range of 20 deg. -60 deg.. Preferably, the ratio of radius of curvature to tube diameter R/d (or R/b) is in the range of 3-4; the bent pipe with the rectangular section also has the height-to-width ratio h/b within the range of 1.2-1.6; the angle of rotation theta is in the range of 30 deg. -50 deg.. The R/d has great influence on the bending resistance coefficient, and especially, the zeta is increased sharply by reducing the R/d under the conditions that theta is more than 60 degrees and R/d is less than 1; when R/d is smaller, the influence of the section shape on the resistance coefficient of the bent pipe is small; when R/d is larger, the resistance coefficient of the bent pipe with the large h/b rectangular section is smaller. Comprehensively considering the factors and aiming at increasing the heat exchange area and strengthening the heat dissipation; the parameters can ensure the optimal flowing effect, reduce the resistance coefficient and reduce the local loss.
The fluid can form a branched flow channel from the vertical common flow channel pipe of the first layer unit of the flow channel network 6 to the upper micro flow channel of the second layer unit connected with the vertical common flow channel pipe to flow freely; because the number of the vertical flow channels of the first layer unit and the second layer unit is different by one, the size of the flow channels of the upper layer unit and the lower layer unit is properly reduced in consideration of the influence of the resistance of fluid on pressure drop, the direct flow channel entering the first layer unit and the second layer unit from the flow channel of the upper layer unit is a sudden shrinkage pipe, and the resistance coefficient of the direct flow channel can be represented by a formula zeta of 0.5 (1-A)2/A1) Calculating that the resistance coefficient of a channel entering the lower layer unit from a direct current channel connecting the first layer unit and the second layer unit is (1-A) as a sudden expansion pipe2/A3) A 2 calculation, (wherein A)1The total cross-sectional area of the flow passage of the first layer unit, A2Total cross-sectional area of the direct current path for connecting the first layer unit and the second layer unit, A3The total cross section area of the flow passage of the second layer unit), and the influence of the bent pipe on the resistance coefficient is combined, so as to reduce the fluid resistance and achieve the optimal flow effect, the A2/A1And A2/A3May range between 0.8 and 1. The total flow of the fluid entering the second layer unit from the first layer unit is suddenly reduced, so that the speed of the fluid is changed, the speed of the boundary layer is further influenced, and the heat dissipation effect of the boundary layer is improved. The first layer of second layer units are sequentially a second layer unit and a third layer unit in an increasing mode from the inlet main flow channel as the first layer unit to the outlet main flow channel relative to the inlet and the outlet.
As shown in fig. 2 and 5, the cover plate 10 is attached to the cooling plate body 5 to prevent the working medium from flowing out. The cooling plate body 5 and the cover plate 10 are detachably, fixedly and hermetically connected, so that when any one of the components fails, the cooling plate body and the cover plate can be conveniently detached for maintenance or replacement, and the subsequent maintenance cost is reduced. The material of the cooling plate body 5 and the material of the plate cover 10 can be the same, so that the better processing compatibility is achieved. Preferably, the cooling plate body 5 and the plate cover 10 may be made of aluminum. The materials of the water inlet pipe connectors (1, 3) and the water outlet pipe connectors (7, 9) are not limited, and can be the same aluminum material as the cooling plate body 5. The material of the cooling plate is preferably an aluminum alloy because a material having high heat conduction efficiency is selected to improve heat dissipation efficiency.
As shown in fig. 3 and 4, a battery pack with a battery thermal management structure comprises a single battery 11 and the honeycomb type microchannel cooling plate 12 for battery thermal management, wherein a contact surface of the honeycomb type microchannel cooling plate 12 for battery thermal management is in contact with and fixed to the surface of the single battery 11, and heat dissipation silicone grease is coated between the contact surface and the surface of the battery for enhancing heat dissipation, so that the cooling plate and the battery can be effectively attached to each other, and a buffering effect can be achieved to prevent rigid friction or extrusion deformation. The honeycomb-type micro-channel cooling plate 12 for battery thermal management and the single battery 11 are installed in three ways: one is that one side of the cooling plate 12 is attached to the surface of the single battery 11; the other installation mode is that the surface of the cooling plate 12 is attached to the side surface of a battery pack consisting of a plurality of single batteries 11; the last way of mounting is that the cooling plate 12 is mounted between two single cells 11. When the cooling device is used, heat generated by battery charging or discharging is dissipated through the aluminum cooling plate, fluid in the cooling plate channel continuously circulates through the water inlet pipe and the water outlet pipe, and the heat is directly taken away through water circulation.
The invention can distribute the cooling liquid in the battery cooling plate more uniformly, reduce the temperature difference of each part of the battery cooling plate, reduce the highest temperature value, reduce the pressure drop of the working medium, effectively solve the heat dissipation problem of the square battery, and is beneficial to improving the performance of the battery and prolonging the service life of the battery.
The above description is only a preferred embodiment of the present invention, and the scope of the present invention should not be limited thereby, and all the simple equivalent changes and modifications made in the claims and the description of the present invention are within the scope of the present invention.
Claims (10)
1. The honeycomb type microchannel cooling plate for battery thermal management is characterized by comprising a body and a plate cover, wherein the plate cover comprises a cooling plate body (5) and a cover plate (10), and two water inlet pipe interfaces (1 and 3) are respectively arranged on two side edges of the upper side of the cooling plate body (5); two water outlet pipe interfaces (7, 9) are respectively arranged on the two side edges of the lower side; the water inlet pipe connectors (1 and 3) are respectively arranged on two sides of the first main flow channel (2), the water outlet pipe connectors (7 and 9) are respectively arranged on two sides of the second main flow channel (8), the first main flow channel (2) and the second main flow channel (8) are respectively connected with a plurality of parallel straight channels (4), and the parallel straight channels (4) are respectively connected with a flow channel net (6) forming a honeycomb shape.
2. The honeycomb-type microchannel cooling plate for battery thermal management according to claim 1, wherein the flow channel network (6) is composed of a plurality of hexagonal microchannel units arranged in a row, adjacent microchannel units share a common flow channel pipe, and the units are communicated with each other through the common flow channel to form a honeycomb shape.
3. The honeycomb microchannel cooling plate for battery thermal management according to claim 2, wherein the first main flow channel (2) and the second main flow channel (8) have a larger channel inner diameter dimension than the honeycomb type flow channel network (6), and each adjacent flow channel in the flow channel network (6) is communicated with each other and has the same zigzag structure.
4. The honeycomb-type microchannel cooling plate for battery thermal management according to claim 2, wherein the common channel tubes in the channel network (6) are communicated with each other through the microchannels, and the joints of the common channel tubes and the microchannels are provided with certain bends.
5. The honeycomb microchannel cooling plate for thermal management of batteries according to claim 4, wherein the ratio R/d of the radius of curvature of the bend to the tube diameter is in the range of 2-4; the height-to-width ratio h/b of the elbow with the rectangular section ranges from 1 to 2; the angle of rotation theta is in the range of 20 deg. -60 deg..
6. The honeycomb microchannel cooling plate for battery thermal management of claim 1, wherein the first and second primary flow channels are square, circular, or rectangular in cross-section.
7. The honeycomb microchannel cooling plate for battery thermal management according to claim 1, wherein the microchannel has a cross-sectional length and width of 0.2mm to 5 mm.
8. The honeycomb type microchannel cooling plate for battery thermal management according to claim 1, wherein the plate cover has the same outer dimension as the cooling plate body and covers the outer side of the cooling plate body.
9. The honeycomb microchannel cooling plate for thermal management of a battery as claimed in claim 8, wherein the plate cover is sealed by brazing aluminum plate, laser welding aluminum plate or epoxy resin sealant.
10. A battery pack having a cell thermal management structure, comprising a unit cell and the honeycomb type microchannel cooling plate for battery thermal management according to any one of claims 1 to 9, wherein the contact surface of the honeycomb type microchannel cooling plate for battery thermal management is fixed in contact with the surface of the cell.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911411636.4A CN111092277A (en) | 2019-12-31 | 2019-12-31 | Honeycomb type micro-channel cooling plate for battery thermal management and application thereof |
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| CN201911411636.4A CN111092277A (en) | 2019-12-31 | 2019-12-31 | Honeycomb type micro-channel cooling plate for battery thermal management and application thereof |
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| CN111092277A true CN111092277A (en) | 2020-05-01 |
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| CN201911411636.4A Pending CN111092277A (en) | 2019-12-31 | 2019-12-31 | Honeycomb type micro-channel cooling plate for battery thermal management and application thereof |
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| CN (1) | CN111092277A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113078386A (en) * | 2021-03-29 | 2021-07-06 | 哈尔滨工业大学（威海） | Honeycomb phase change material and liquid cooling coupled battery cooling system and cooling method |
| CN113178638A (en) * | 2021-04-23 | 2021-07-27 | 湖南工业大学 | Bionic heat dissipation method and device for liquid-cooled battery pack |
| CN113514491A (en) * | 2021-04-20 | 2021-10-19 | 中国电子科技集团公司第二十研究所 | Bionic topology microchannel heat exchanger and fluid heat exchange experimental system thereof |
| CN114597444A (en) * | 2022-02-14 | 2022-06-07 | 浙江天能氢能源科技有限公司 | Air-cooled fuel cell with enclosed cathode cavity |
| CN115133173A (en) * | 2022-06-27 | 2022-09-30 | 中国第一汽车股份有限公司 | Power battery assembly, thermal management system, thermal management method and vehicle |
| CN116632413A (en) * | 2023-07-25 | 2023-08-22 | 苏州市华盛源机电有限公司 | Micro-channel radiator for battery pack of electric automobile |
| WO2024087016A1 (en) * | 2022-10-25 | 2024-05-02 | 扬州纳力新材料科技有限公司 | Battery cooling plate and battery module |
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2019
- 2019-12-31 CN CN201911411636.4A patent/CN111092277A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113078386A (en) * | 2021-03-29 | 2021-07-06 | 哈尔滨工业大学（威海） | Honeycomb phase change material and liquid cooling coupled battery cooling system and cooling method |
| CN113514491A (en) * | 2021-04-20 | 2021-10-19 | 中国电子科技集团公司第二十研究所 | Bionic topology microchannel heat exchanger and fluid heat exchange experimental system thereof |
| CN113178638A (en) * | 2021-04-23 | 2021-07-27 | 湖南工业大学 | Bionic heat dissipation method and device for liquid-cooled battery pack |
| CN114597444A (en) * | 2022-02-14 | 2022-06-07 | 浙江天能氢能源科技有限公司 | Air-cooled fuel cell with enclosed cathode cavity |
| CN115133173A (en) * | 2022-06-27 | 2022-09-30 | 中国第一汽车股份有限公司 | Power battery assembly, thermal management system, thermal management method and vehicle |
| WO2024087016A1 (en) * | 2022-10-25 | 2024-05-02 | 扬州纳力新材料科技有限公司 | Battery cooling plate and battery module |
| CN116632413A (en) * | 2023-07-25 | 2023-08-22 | 苏州市华盛源机电有限公司 | Micro-channel radiator for battery pack of electric automobile |
| CN116632413B (en) * | 2023-07-25 | 2023-10-03 | 苏州市华盛源机电有限公司 | Micro-channel radiator for battery pack of electric automobile |
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