CN116315375A - New energy battery liquid cooling tray of built-in full package liquid cooling system - Google Patents

New energy battery liquid cooling tray of built-in full package liquid cooling system Download PDF

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Publication number
CN116315375A
CN116315375A CN202310303978.4A CN202310303978A CN116315375A CN 116315375 A CN116315375 A CN 116315375A CN 202310303978 A CN202310303978 A CN 202310303978A CN 116315375 A CN116315375 A CN 116315375A
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CN
China
Prior art keywords
liquid cooling
liquid
gear
tray
pipe
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Granted
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CN202310303978.4A
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Chinese (zh)
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CN116315375B (en
Inventor
朱威
陈丹
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Jiangsu Tianjun Precision Technology Co ltd
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Jiangsu Tianjun Precision Technology Co ltd
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Publication of CN116315375A publication Critical patent/CN116315375A/en
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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
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/244—Secondary casings; Racks; Suspension devices; Carrying devices; Holders characterised by their mounting method
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K5/00—Heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants; Materials for the production of heat or cold by chemical reactions other than by combustion
    • C09K5/08—Materials not undergoing a change of physical state when used
    • C09K5/10—Liquid materials
    • 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
    • H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
    • H01M10/486—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for measuring 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
    • H01M10/61—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
    • H01M10/60—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
    • H01M10/62—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
    • H01M10/65—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
    • H01M10/6556—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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
    • H01M50/242—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries against vibrations, collision impact or swelling
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/249—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for aircraft or vehicles, e.g. cars or trains
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/262—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with fastening means, e.g. locks
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/289—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or packs
    • 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 new energy battery liquid cooling tray with a built-in full-package liquid cooling system, which comprises a cover plate and a tray body, wherein a first liquid cooling pipe is arranged on the inner layer of the tray body, a second liquid cooling pipe and a clamping mechanism are arranged on the inner layer of the cover plate, and a cooling system is arranged in the tray body.

Description

New energy battery liquid cooling tray of built-in full package liquid cooling system
Technical Field
The invention relates to the technical field of new energy batteries, and discloses a new energy battery liquid cooling tray with a built-in full-package liquid cooling system.
Background
In recent years, a new energy automobile is an automobile which adopts unconventional automobile fuel as a power source or conventional automobile fuel, adopts a novel vehicle-mounted power device and integrates advanced technology in the aspects of power control and driving of the automobile, and has advanced technical principle, new technology and new structure, wherein the new energy automobile comprises a pure electric automobile, an extended range electric automobile, a hybrid electric automobile, a fuel cell electric automobile, a hydrogen engine automobile and the like; most of new energy automobiles adopt lithium batteries capable of storing electricity, and the battery energy storage technology is an energy storage technology which has better application prospect and rapid development at present and occupies the mainstream position in the electrochemical energy storage market;
at present, the tray function of new energy battery is comparatively single, and new energy battery's heat dissipation adopts the air cooling technique to carry out ambient temperature's control generally, denier radiating efficiency is low to adjust ambient temperature through the air, the rate of change of temperature is slower, thereby seriously influence battery's life, in the use group battery is receiving vibrations, jolting down, can cause the damage, influence use, simultaneously, new energy automobile battery liquid cooling board among the prior art, the runner surface area is little, heat exchange efficiency is low.
Disclosure of Invention
In order to solve the technical problems, the invention provides a new energy battery liquid cooling tray with a built-in full-package liquid cooling system.
The technical scheme of the invention is as follows: the new energy battery liquid cooling tray with the built-in full-package liquid cooling system comprises a cover plate and a tray body, wherein the tray body is connected with the cover plate through bolts,
the inner layer of the tray body is provided with a second liquid cooling pipe, the inner layer of the cover plate is provided with a first liquid cooling pipe, one end of the first liquid cooling pipe is connected with one end of the second liquid cooling pipe, and the other end of the first liquid cooling pipe is connected with the other end of the second liquid cooling pipe through a circulating cooler arranged outside the tray body;
the cooling system comprises a plurality of cooling bags arranged on the inner wall and the bottom surface of the tray body, a temperature detection unit arranged on the inner wall of the cover plate and a circulating assembly arranged on the bottom surface of the tray body, wherein the circulating assembly comprises a box body and a rotating wheel arranged in the box body, the rotating wheel is rotationally connected with the top surface of the box body through a central rod, a motor is arranged outside the cover plate, and the central rod penetrates through the top surface of the box body and is fixedly connected with an output shaft of the motor;
the temperature detection unit is electrically connected with the circulating cooler;
each cooling bag is provided with an inlet and an outlet, a supporting grid is arranged in each cooling bag, and a plurality of cooling bags are sequentially connected through a connecting pipe, wherein one connecting pipe is connected and communicated with two ends of the side wall of the box body; the height of the box body is smaller than or equal to that of the supporting grid.
Description: through the arrangement, the dual-effect of the first liquid cooling pipe, the second liquid cooling pipe and the cooling system can be utilized, the cooling effect on the new energy battery is improved, the first liquid cooling pipe, the second liquid cooling pipe and the circulating cooler are communicated, the internal temperature can be integrally reduced, cooling is achieved, the temperature in the battery can be uniform through the cooling system, local overheating is avoided, the cooling bag can stably act on the battery when the temperature of the battery is uniform, the collision between the battery and the tray when shaking occurs is reduced, the battery can be further protected, and the circulating cooler can be started for double cooling when the temperature cannot be reduced through the temperature rising through the arrangement of the temperature detection unit.
Further, one end of the first liquid cooling pipe is sleeved at one end of the second liquid cooling pipe, an elastic sheet is arranged on the side wall of one end of the first liquid cooling pipe, the lower end of the elastic sheet is fixed with the side wall of one end of the first liquid cooling pipe, the included angle between the lower end of the elastic sheet and the side wall of one end of the first liquid cooling pipe is 20-45 degrees, and a bump is arranged on the outer side of the upper part of the elastic sheet; and a groove used for being clamped with the convex block is formed in the wall of the tray body pipe at one end of the second liquid cooling pipe.
Description: through the arrangement of the elastic sheet, the first liquid cooling pipe is locked when one end of the first liquid cooling pipe is connected with one end of the second liquid cooling pipe, so that the installation is firm; when one end of the first liquid cooling pipe is sleeved at one end of the second liquid cooling pipe, the upper end of the elastic piece is close to the first liquid cooling pipe under the action of pressure, and when the protruding block moves to the groove, clamping locking is carried out.
Further, a plurality of battery placement areas are arranged in the tray body, the number of the battery placement areas is the same as that of the cooling bags positioned on the bottom surface of the tray body, each battery placement area is correspondingly provided with one cooling bag, a partition plate is arranged between the battery placement areas, and the partition plate and the central rod are positioned on the same straight line.
Description: through the arrangement of the areas, the battery can be placed more conveniently and orderly, and the placement fixing effect corresponding to each area is optimal.
Further, the first liquid cooling pipe and the second liquid cooling pipe are internally provided with first cooling liquid, wherein the first cooling liquid comprises the following components: 30-40% of ethylene glycol, 30-35% of propylene glycol, 0.5% of benzotriazole and the balance of deionized water.
Description: the first cooling liquid is set according to the composition components, so that the cooling effect is further improved, and the ethylene glycol and the propylene glycol are used as conventional cooling mother liquid, so that the cooling mother liquid has larger specific heat capacity and good cooling effect, and the benzotriazole is added into the cooling mother liquid, so that the cooling mother liquid has good corrosion inhibition effect on a circulating cooling water system.
Further, a second cooling liquid is filled in the cooling system, and the second cooling liquid comprises the following components: 15-20% of sodium polyacrylate, 18% of triethanolamine, 14-15% of glycerol and the balance of deionized water.
Description: through the setting of second coolant liquid for coolant liquid in the cooling bag is safer and have certain viscosity and intensity, and triethanolamine has flame retardant efficiency, has certain guard action when taking place danger, and sodium polyacrylate and glycerol can increase viscosity and intensity and make the cooling bag have certain supporting effect to the battery.
Further, the cover plate is provided with a supporting framework which is of a reticular cuboid structure, the supporting framework penetrates through the cover plate and is internally provided with a clamping mechanism, the clamping mechanism comprises a gear piece and a tightening piece,
the tightening member comprises an annular conical disc and a moving block, an opening is arranged on the bottom surface of a supporting framework below the annular conical disc, the edge of a big port of the annular conical disc is fixed at the edge of the opening, a slideway for sliding the moving block is arranged on the annular conical disc, the moving block penetrates through the slideway, a concave groove for sliding limiting connection with the slideway is arranged on the moving block,
the small port of the annular conical disc is sleeved with a lantern ring, the lantern ring is rotationally connected with the small port of the annular conical disc, the lower part of the moving block is connected with the bottom surface of the lantern ring through a connecting rod, the moving block is movably connected with the connecting rod through a hinging rod, and the bottom surface of the lantern ring is movably connected with the connecting rod through the hinging rod;
the top surface of the lantern ring is provided with a ratchet wheel, the side wall of the supporting framework is provided with a clamping rod for reversely clamping the ratchet wheel, and the clamping rod is in rotation limiting connection with the side wall of the supporting framework;
the gear piece comprises a first gear, a second gear and a fixed rod, the second gear rotates through the first gear, the second gear is fixedly connected with the ratchet wheel through the fixed rod, the second gear is rotationally connected with the top surface of the support framework, and the first gear is fixedly sleeved on the center rod;
the first gear and the central rod are hollow, a liquid adding chamber is arranged in the center of the first gear, a round hole communicated with the inside of the central rod is formed in the lower part of the central rod, and the liquid adding chamber is communicated with the outside through an opening formed in the top surface of the first gear;
the gear teeth on the first gear are rotationally connected with the side wall of the first gear through a torsion spring, a liquid adding bag is arranged on the side wall of the first gear positioned at one side of the gear teeth, the side wall of the liquid adding bag penetrates through the side wall of the first gear through a first communication pipe and is communicated with the liquid adding chamber, the first communication pipe penetrates through the side wall of the first gear, and a first one-way valve for feeding liquid to the liquid adding bag is arranged on the first communication pipe; the bottom of the liquid adding bag is communicated to the outside of the round hole through a second communicating pipe, and a second one-way valve for feeding liquid to the outside of the round hole is arranged on the second communicating pipe; the motor is fixedly connected with the top surface of the supporting framework.
Description: through the arrangement of the clamping mechanism, the battery can be correspondingly clamped by moving the moving block when the rotating wheel rotates, so that the installation stability effect is improved; through the arrangement of the gear parts, the first gear drives the second gear to rotate at a certain angle when the motor rotates, the lantern ring is further rotated, the lantern ring enables the moving block to move downwards through the connecting rod, clamping is achieved, when the moving block and the battery are in a fastening state, the second gear is not driven to rotate by the first gear, and the moving block achieves a self-adaptive fastening effect; through the setting of ratchet and draw-in bar for the movable block is more stable, and when first gear rotated, the fire-retardant agent was added to the fire prevention flame retardant layer in the compression liquid adding bag to the disk body, improves the internal security performance of flame retardant effect disk.
Further, the bottom of the movable block is provided with a sliding block, and a fireproof flame-retardant layer is arranged below the cover plate.
Description: through the setting, the shaking can be reduced, and the movable block is helped to be pressed down more firmly.
Further, be equipped with a plurality of aperture that is used for ventilation on the apron, the disk body inner wall is equipped with steady piece, steady piece includes clamp plate and spring, be equipped with the briquetting on the clamp plate, the briquetting passes through the spring and is connected with disk body inner wall, the spring overcoat is equipped with the casing.
Description: through the arrangement of the stabilizing piece, the side surface of the battery can be further clamped, so that the stability of the battery is improved, and the anti-seismic effect is improved.
Further, a rotary fan for radiating heat is sleeved on an output shaft of the motor; the rotary fan, the disc body, the motor and the cover plate are sleeved with a protection net.
Description: through the setting of rotating the fan, can further utilize same motor to improve the radiating effect, through the setting of guard net, can protect apron and disk body.
The invention has the beneficial effects that:
(1) The invention can utilize the dual functions of the first liquid cooling pipe, the second liquid cooling pipe and the cooling system to improve the cooling effect on the new energy battery, the first liquid cooling pipe, the second liquid cooling pipe and the circulating cooler are communicated, the internal temperature can be integrally reduced to realize cooling, the cooling system can ensure that the temperature in the battery is uniform, the occurrence of local overheating is avoided, the cooling bag can play a firm role on the battery while the temperature of the battery is uniform, the collision between the battery and the tray when shaking occurs is reduced, the battery can be further protected, and the circulating cooler can be started to perform dual cooling when the temperature cannot be reduced by using the cooling system through the arrangement of the temperature detection unit.
(2) According to the invention, through the arrangement of the elastic sheet, the locking is realized when one end of the first liquid cooling pipe is connected with one end of the second liquid cooling pipe, so that the installation is convenient and firm; when one end of the first liquid cooling pipe is sleeved at one end of the second liquid cooling pipe, the upper end of the elastic piece is close to the first liquid cooling pipe under the action of pressure, and when the protruding block moves to the groove, clamping locking is carried out.
(3) According to the invention, the composition of the first cooling liquid is set, so that the cooling effect can be best, and the ethylene glycol and the propylene glycol are used as conventional cooling mother liquid, so that the cooling effect is good, and the benzotriazole is added into the cooling mother liquid, so that the corrosion inhibition effect on a circulating cooling water system is good; through the setting of second coolant liquid for coolant liquid in the cooling bag is safer and have certain viscosity and intensity, and triethanolamine has flame retardant efficiency, has certain guard action when taking place danger, and sodium polyacrylate and glycerol can increase viscosity and intensity and make the cooling bag have certain supporting effect to the battery.
(4) According to the invention, through the arrangement of the clamping mechanism, the battery can be correspondingly clamped by utilizing the movement of the moving block while the rotating wheel rotates, so that the installation stability effect is improved; through the arrangement of the gear piece, the first gear drives the second gear to rotate at a certain angle when the motor rotates, the lantern ring is further rotated, the lantern ring enables the moving block to move downwards through the connecting rod, clamping is achieved, when the moving block and the battery are in a fastening state, the second gear is not driven to rotate by the first gear any more, self-adaptive fastening effect is achieved, and the third gear is prevented from affecting the moving block due to shaking through the ratchet and the clamping rod, so that the battery is placed more stably; the first gear rotates, and meanwhile, the compression liquid adding bag adds a flame retardant into the fireproof flame-retardant layer in the tray body, so that the safety performance of the inside of the tray body with the flame-retardant effect is improved.
Drawings
FIG. 1 is a schematic view showing the appearance of embodiment 1 of the present invention;
FIG. 2 is a schematic diagram of a second liquid cooling tube according to embodiment 1 of the present invention;
FIG. 3 is a schematic view of a cover plate and a supporting structure according to embodiment 2 of the present invention;
FIG. 4 is a schematic diagram of a cooling system and a schematic diagram of a cooling system 2 according to an embodiment 1 of the present invention;
FIG. 5 is a schematic view of a circulation assembly of the present invention;
FIG. 6 is a schematic view of the assembly of the gear member and the take-up member of the present invention;
FIG. 7 is a schematic view of the appearance of a first gear of the present invention;
FIG. 8 is a schematic longitudinal cross-sectional view of a first gear of the present invention;
FIG. 9 is a schematic view of the exterior of the inverted cinch member of the present invention;
FIG. 10 is a schematic diagram of the appearance of a moving block of the present invention;
FIG. 11 is a schematic view of the ratchet and the lever of the present invention;
FIG. 12 is a schematic view of the appearance of the stabilizing member of the present invention;
FIG. 13 is a schematic view showing the appearance of embodiment 3 of the present invention;
fig. 14 is a schematic view showing the structure of a cover plate in embodiment 3 of the present invention;
FIG. 15 is a schematic view of the appearance of an elastic sheet of the present invention;
FIG. 16 is a schematic view of the support of the present invention;
wherein 1-cover plate, 11-first liquid cooling tube, 111-elastic sheet, 112-fireproof flame-retardant layer, 12-supporting framework, 13-second gear, 14-first gear, 141-gear tooth, 142-liquid adding bag, 143-round hole, 15-fixed rod, 16-tightening piece, 161-annular conical disk, 162-moving block, 163-slideway, 164-sliding block, 165-lantern ring, 166-connecting rod, 167-ratchet, 168-clamping rod, 17-small hole, 18-protection net, 19-rotating fan, 2-disk, 21-second liquid cooling pipe, 22-cooling bag, 221-supporting grid, 23-circulation assembly, 231-rotating wheel, 232-center rod, 24-baffle, 25-steady piece, 251-pressing plate, 252-pressing block, 253-spring, 254-shell.
Detailed Description
The invention will be described in further detail with reference to the following embodiments to better embody the advantages of the invention.
Example 1
As shown in fig. 1, the new energy battery liquid cooling tray with the built-in full-package liquid cooling system comprises a cover plate 1 and a tray body 2, wherein the tray body 2 is connected with the cover plate 1 through bolts,
as shown in fig. 2, a first liquid cooling pipe 11 is arranged on the inner layer of the cover plate 1, a second liquid cooling pipe 21 is arranged on the inner layer of the tray body 2, one end of the first liquid cooling pipe 11 is connected with one end of the second liquid cooling pipe 21, and the other end of the first liquid cooling pipe 11 is connected with the other end of the second liquid cooling pipe 21 through a circulating cooler arranged outside the tray body 2;
as shown in fig. 4 and 5, a cooling system is arranged in the tray 2, the cooling system comprises 6 cooling bags 22 arranged on the inner wall and the bottom surface of the tray 2, a temperature detection unit arranged on the inner wall of the cover plate 1 and a circulation assembly 23 arranged on the bottom surface of the tray 2, the circulation assembly 23 comprises a box body and a rotating wheel 231 arranged in the box body, the rotating wheel 231 is rotationally connected with the top surface of the box body through a central rod 232, a motor is arranged outside the cover plate 1, and the central rod 232 penetrates through the top surface of the box body and is fixedly connected with an output shaft of the motor; a plurality of battery placement areas are arranged in the tray body 2, the number of the battery placement areas is the same as that of the cooling bags 22 positioned on the bottom surface of the tray body 2, each battery placement area is correspondingly provided with one cooling bag 22, a partition plate 24 is arranged among the battery placement areas, and the partition plates 24 and the central rod 232 are positioned on the same straight line;
the temperature detection unit is electrically connected with the circulating cooler; the temperature detection unit adopts a commercially available patch temperature sensor PT100; the circulating cooler adopts a commercial small circulating cooler;
as shown in fig. 4 and 16, each cooling bag 22 is provided with an inlet and an outlet, and the cooling bags 22 are internally provided with support grids 221,6 cooling bags 22 which are sequentially connected through a connecting pipe, wherein one connecting pipe is connected and communicated with two ends of the side wall of the box body; the height of the box body is equal to the height of the half supporting grid 221;
as shown in fig. 4 and 15, one end of the first liquid-cooled tube 11 is sleeved at one end of the second liquid-cooled tube 21, an elastic sheet 111 is arranged on the side wall of one end of the first liquid-cooled tube 11, the lower end of the elastic sheet 111 is fixed with the side wall of one end of the first liquid-cooled tube 11, the included angle between the lower end and the side wall of the side wall is 20-45 degrees, and a bump is arranged on the outer side of the upper part of the elastic sheet 111; a groove for being clamped with the convex block is formed in the wall of the pipe hole of the tray body 2 at one end of the second liquid cooling pipe 21;
the first liquid cooling pipe 11 and the second liquid cooling pipe 21 are internally provided with a first cooling liquid, wherein the first cooling liquid comprises deionized water; the cooling system is internally provided with a second cooling liquid, and the second cooling liquid comprises deionized water;
as shown in fig. 12, the cover plate 1 is provided with a plurality of small holes 17 for ventilation, the inner side wall of the tray body 2 is provided with a stabilizing member 25, the stabilizing member 25 comprises a pressing plate 251 and a spring 253, the pressing plate 251 is provided with a pressing block 252, the pressing block 252 is connected with the inner side wall of the tray body 2 through the spring 253, the spring 253 is sleeved with a housing 254, and the housing 254 is fixedly connected with the tray body 2.
The working principle of the embodiment is as follows:
firstly, a new energy battery is put into a tray body 2, in the putting process, the side surface of the new energy battery presses a pressing plate 251 to enable the pressing plate 251 and a pressing block 252 to displace, a spring 253 is stressed and compressed, the preliminary clamping of the new energy battery is realized, then a cover plate 1 is in butt joint with the tray body 2, one end of a first liquid cooling pipe 11 is sleeved at one end of a second liquid cooling pipe 21, at the moment, the upper end of an elastic sheet 111 is close to one end of the first liquid cooling pipe 11 under the pressure action of the inner layer of the tray body 2, and when a convex block moves to a groove, the matching locking is carried out; then the cover plate 1 is in threaded connection with the threads on the tray body 2 through bolts;
then, the motor is started, the central rod 232 drives the rotating wheel 231 to rotate, so that the second cooling liquid in the cooling system is cooled in a circulating way, and when the temperature detection unit detects that the temperature exceeds the standard, the circulating cooler is started, and the circulating first cooling liquid and the circulating second cooling liquid are utilized to cool.
Example 2
This embodiment differs from embodiment 1 in that, as shown in fig. 3 to 9,
the lower end of the elastic piece 111 is fixed to the side wall of one end of the first liquid cooling tube 11, and the lower end and the side wall are 45 degrees, as shown in fig. 3, 4 and 6, the cover plate 1 is provided with a supporting structure 12, the supporting structure 12 is of a reticular cuboid structure, the supporting structure 12 penetrates through the cover plate 1 and is internally provided with a clamping mechanism, the clamping mechanism comprises a gear member and a tightening member 16,
as shown in fig. 6, 9, 10 and 11, the tightening member 16 includes an annular conical disc 161 and a moving block 162, an opening is provided on the bottom surface of the supporting frame 12 below the annular conical disc 161, the large-port edge of the annular conical disc 161 is fixed at the edge of the opening, a sliding way 163 for sliding the moving block 162 is provided on the annular conical disc 161, the moving block 162 penetrates through the sliding way 163, a concave groove for sliding and limiting connection with the sliding way 163 is provided on the moving block 162,
as shown in fig. 6, a collar 165 is sleeved in the small port of the annular conical disk 161, the collar 165 is rotatably connected with the small port of the annular conical disk 161, the lower part of the moving block 162 is connected with the bottom surface of the collar 165 through a connecting rod 166, the moving block 162 is movably connected with the connecting rod 166 through a hinging rod, and the bottom surface of the collar 165 is movably connected with the connecting rod 166 through a hinging rod;
as shown in fig. 11, a ratchet 167 is provided on the top surface of the collar 165, a clamping rod 168 for reversely clamping the ratchet 167 is provided on the side wall of the support frame 12, and the clamping rod 168 is in rotation limit connection with the side wall of the support frame 12;
as shown in fig. 6, 7 and 8, the gear member comprises a first gear 14, a second gear 13 which is driven to rotate by the first gear 14, and a fixed rod 15, the second gear 13 is fixedly connected with a ratchet 167 by the fixed rod 15, the second gear 13 is rotatably connected with the top surface of the supporting framework 12, and the first gear 14 is fixedly sleeved on a central rod 232;
the first gear 14 and the central rod 232 are hollow, a liquid adding chamber is arranged in the center of the first gear 14, a round hole 143 communicated with the inside of the central rod 232 is arranged at the lower part of the central rod 232, and the liquid adding chamber is communicated with the outside through an opening arranged on the top surface of the first gear 14;
as shown in fig. 7 and 8, the gear teeth 141 on the first gear 14 are rotationally connected with the side wall of the first gear 14 through a limiting torsion spring, a liquid adding bag 142 is arranged on the side wall of the first gear 14 at one side of the gear teeth 141, the side wall of the liquid adding bag 142 penetrates through the side wall of the first gear 14 through a first communication pipe and is communicated with a liquid adding chamber, the first communication pipe penetrates through the side wall of the first gear 14, and a first one-way valve for feeding liquid into the liquid adding bag 142 is arranged on the first communication pipe; the bottom of the liquid adding bag 142 is communicated to the outside of the round hole 143 through a second communicating pipe, and a second one-way valve for discharging liquid to the outside of the round hole 143 is arranged on the second communicating pipe; the motor is fixedly connected with the top surface of the supporting framework 12;
a fireproof and flame-retardant layer 112 is arranged below the cover plate 1, the fireproof and flame-retardant layer adopts a commercially available fireproof and flame-retardant cotton screen plate, a chute for sliding the bottom end of the moving block 162 is arranged on the screen plate,
the working principle of the embodiment is as follows: after the motor is started, the motor drives the first gear 14 to rotate, the first gear 14 drives the second gear 13 to rotate, the second gear 13 drives the lantern ring 165 and the ratchet 167 to rotate through the fixed rod 15, the lantern ring 165 drives the moving block 162 to move to the edge of the annular conical disc 161 in a limiting manner in the slideway 163 through the connecting rod 166, at the moment, the moving block 162 displaces close to one side of the new energy battery, and pressure is applied to the new energy battery, so that clamping is realized; when the moving block 162 and the battery are in a fastening state, the second gear 13 is not driven to rotate by the first gear 14 any more, and the resistance of the second gear 13 to rotate is extremely high due to the fact that the second gear is in the fastening state at the moment, the torsion force of the limit torsion spring is exceeded, so that the gear teeth 141 overcome the limit torsion spring to swing, and the second gear 13 passes through; meanwhile, the ratchet wheel 167 and the clamping rod 168 prevent the second gear 13 from rotating reversely, so that the clamping position of the moving block 162 to the battery is more self-adaptive and stable; and during this period, the charging bladder 142 is compressed by the gear teeth 141, so that the fire retardant in the charging bladder 142 is added into the fire-proof and fire-retardant layer 112 on the top surface of the battery through the second communicating pipe, and meanwhile, when the gear teeth 141 do not compress the charging bladder 142, under the action of the pressure in the charging bladder 142 and the check valve, the fire retardant in the charging bladder is pumped into the charging bladder 142 through the second communicating pipe;
in the long-term use process, when the moving block 162 and the battery are loosened due to the clearance between the fireproof flame-retardant layer 112 and the like, the second gear 13 rotates to lose resistance, so that the torque force of the limiting torsion spring is lower than that of the second gear 13, and when the gear teeth 141 pass through the second gear 13, the second gear 13 is stirred to rotate, so that the moving block 162 and the battery are further in a fastening state, and the first gear 14 rotates.
Example 3
The difference between this embodiment and embodiment 2 is that, as shown in fig. 11 and 12, a rotary fan 19 for heat dissipation is sleeved on the output shaft of the motor; the rotary fan 19, the disc body 2, the motor and the cover plate 1 are sleeved with a protection net 18; the working principle of this embodiment is the same as that of embodiment 2.
Example 4
The difference between this embodiment and embodiment 1 is that the first liquid cooling pipe 11 and the second liquid cooling pipe 21 are filled with a first cooling liquid, wherein the first cooling liquid comprises the following components: according to mass fraction, ethylene glycol 35%, propylene glycol 33%, benzotriazole 0.5%, and the balance deionized water; the cooling system is internally provided with a second cooling liquid, and the second cooling liquid comprises the following components: according to mass fraction, 37% of sodium polyacrylate, 18% of triethanolamine, 14.5% of glycerol and the balance of deionized water.
Example 5
The present embodiment is different from embodiment 4 in that the first cooling liquid comprises the following components: 30% of ethylene glycol, 35% of propylene glycol, 0.5% of benzotriazole and the balance of deionized water according to mass fraction; the second cooling liquid comprises the following components: according to mass fraction, 40% of sodium polyacrylate, 18% of triethanolamine, 14% of glycerol and the balance of deionized water.
Example 6
The present embodiment is different from embodiment 4 in that the first cooling liquid comprises the following components: according to mass fraction, 40% of ethylene glycol, 30% of propylene glycol, 0.5% of benzotriazole and the balance of deionized water; the second cooling liquid comprises the following components: according to mass fraction, 35% of sodium polyacrylate, 18% of triethanolamine, 15% of glycerol and the balance of deionized water.
Experimental example:
taking a commercial new energy battery heated to 50 ℃, adding a first cooling liquid and a second cooling liquid into the device of the embodiment 1 to cool, and recording the time when the temperature is reduced to 5 ℃;
comparative example 1: the first cooling liquid and the second cooling liquid are deionized water at normal temperature;
comparative example 2: the first cooling liquid and the second cooling liquid are commercial propylene glycol cooling liquid at normal temperature;
comparative example 3: the first cooling liquid and the second cooling liquid are the first cooling liquid in the embodiment 4 at normal temperature;
comparative example 4: the first cooling liquid in example 4 is selected as the first cooling liquid; the second cooling liquid is prepared by 37% of sodium polyacrylate, 14.5% of glycerol and the balance of deionized water according to mass fraction;
the first cooling liquid and the second cooling liquid at normal temperature of examples 4 to 6 were taken for testing, and compared with comparative examples 1 to 4, as shown in table 1;
TABLE 1 refrigeration time of different coolants
Parameters (parameters) Time/s
Example 4 95
Example 5 102
Example 6 105
Comparative example 1 180
Comparative example 2 125
Comparative example 3 110
Comparative example 4 108
As can be seen from Table 1, comparative examples 4 to 6 show that the component ratios of example 4 are preferable, and comparative examples 4 and comparative examples 1 to 4 show that the component compositions of example 4 are preferable.

Claims (9)

1. The new energy battery liquid cooling tray with the built-in full-package liquid cooling system is characterized by comprising a cover plate (1) and a tray body (2), wherein the tray body (2) is connected with the cover plate (1) through bolts,
the inner layer of the cover plate (1) is provided with a first liquid cooling pipe (11), the inner layer of the tray body (2) is provided with a second liquid cooling pipe (21), one end of the first liquid cooling pipe (11) is connected with one end of the second liquid cooling pipe (21), and the other end of the first liquid cooling pipe (11) is connected with the other end of the second liquid cooling pipe (21) through a circulating cooler arranged outside the tray body (2);
the cooling system comprises a plurality of cooling bags (22) arranged on the inner wall and the bottom surface of the tray body (2), a temperature detection unit arranged on the inner wall of the cover plate (1) and a circulating assembly (23) arranged on the bottom surface of the tray body (2), wherein the circulating assembly (23) comprises a box body and a rotating wheel (231) arranged in the box body, the rotating wheel (231) is rotationally connected with the top surface of the box body through a center rod (232), a motor is arranged outside the cover plate (1), and the center rod (232) penetrates through the top surface of the box body and is fixedly connected with an output shaft of the motor;
the temperature detection unit is electrically connected with the circulating cooler;
each cooling bag (22) is provided with an inlet and an outlet, a supporting grid (221) is arranged in each cooling bag (22), and a plurality of cooling bags (22) are sequentially connected through connecting pipes, wherein one connecting pipe is connected and communicated with two ends of the side wall of the box body; the height of the box body is smaller than or equal to that of the supporting grid (221).
2. The new energy battery liquid cooling tray with the built-in full-package liquid cooling system according to claim 1, wherein one end of the first liquid cooling pipe (11) is sleeved at one end of the second liquid cooling pipe (21), an elastic sheet (111) is arranged on the side wall of one end of the first liquid cooling pipe (11), the lower end of the elastic sheet (111) is fixed with the side wall of one end of the first liquid cooling pipe (11), an included angle between the lower end and the side wall is 20-45 degrees, and a convex block is arranged on the outer side of the upper part of the elastic sheet (111); and a groove used for being clamped with the convex block is formed in the wall of the pipe hole of the disc body (2) positioned at one end of the second liquid cooling pipe (21).
3. The new energy battery liquid cooling tray with the built-in full-package liquid cooling system according to claim 1, wherein a plurality of battery placement areas are arranged in the tray body (2), the number of the battery placement areas corresponds to that of cooling bags (22) positioned on the bottom surface of the tray body (2) one by one, a partition plate (24) is arranged between every two adjacent battery placement areas, and the partition plate (24) and the central rod (232) are positioned on the same straight line.
4. The new energy battery liquid cooling tray with the built-in full package liquid cooling system as claimed in claim 1, wherein the first liquid cooling pipe (11) and the second liquid cooling pipe (21) are filled with a first cooling liquid, and the first cooling liquid comprises the following components: 30-40% of ethylene glycol, 30-35% of propylene glycol, 0.5% of benzotriazole and the balance of deionized water.
5. The new energy battery liquid cooling tray with the built-in full package liquid cooling system as set forth in claim 1, wherein the cooling system is filled with a second cooling liquid, and the second cooling liquid comprises the following components: according to mass fraction, 35-40% of sodium polyacrylate, 18% of triethanolamine, 14-15% of glycerol and the balance of deionized water.
6. A new energy battery liquid cooling tray with a built-in full package liquid cooling system as claimed in claim 1, wherein the cover plate (1) is provided with a supporting framework (12), the supporting framework (12) is of a net cuboid structure, the supporting framework (12) penetrates through the cover plate (1) and is internally provided with a clamping mechanism, the clamping mechanism comprises a gear member and a tightening member (16),
the tightening member (16) comprises an annular conical disc (161) and a moving block (162), an opening is arranged on the bottom surface of a supporting framework (12) below the annular conical disc (161), the edge of a big port of the annular conical disc (161) is fixed at the edge of the opening, a slideway (163) for sliding the moving block (162) is arranged on the annular conical disc (161), the moving block (162) penetrates through the slideway (163), a concave groove for sliding limiting connection with the slideway (163) is arranged on the moving block (162),
the small port of the annular conical disc (161) is sleeved with a sleeve ring (165), the sleeve ring (165) is rotationally connected with the small port of the annular conical disc (161), the lower part of the moving block (162) is connected with the bottom surface of the sleeve ring (165) through a connecting rod (166), the moving block (162) is movably connected with the connecting rod (166) through a hinging rod, and the bottom surface of the sleeve ring (165) is movably connected with the connecting rod (166) through the hinging rod;
the top surface of the lantern ring (165) is provided with a ratchet wheel (167), the side wall of the supporting framework (12) is provided with a clamping rod (168) for reversely clamping the ratchet wheel (167), and the clamping rod (168) is in rotation limiting connection with the side wall of the supporting framework (12);
the gear piece comprises a first gear (14), a second gear (13) which rotates in a transmission way through the first gear (14) and a fixed rod (15), the second gear (13) is fixedly connected with a ratchet wheel (167) through the fixed rod (15), the second gear (13) is rotationally connected with the top surface of the supporting framework (12), and the first gear (14) is fixedly sleeved on the central rod (232);
the first gear (14) and the central rod (232) are hollow, a liquid adding chamber is arranged in the center of the first gear (14), a round hole (143) communicated with the inside of the central rod (232) is formed in the lower part of the central rod, and the liquid adding chamber is communicated with the outside through an opening formed in the top surface of the first gear (14);
the gear teeth (141) on the first gear (14) are rotationally connected with the side wall of the first gear (14) through a limiting torsion spring, a liquid adding bag (142) is arranged on the side wall of the first gear (14) positioned at one side of the gear teeth (141), the side wall of the liquid adding bag (142) penetrates through the side wall of the first gear (14) through a first communication pipe and is communicated with a liquid adding chamber, the first communication pipe penetrates through the side wall of the first gear (14), and a first one-way valve for feeding liquid into the liquid adding bag (142) is arranged on the first communication pipe; the bottom of the liquid adding bag (142) is communicated to the outside of the round hole (143) through a second communicating pipe, and a second one-way valve for draining liquid to the outside of the round hole (143) is arranged on the second communicating pipe; the motor is fixedly connected with the top surface of the supporting framework (12).
7. The new energy battery liquid cooling tray with the built-in full package liquid cooling system as claimed in claim 6, wherein a sliding block (164) is arranged at the bottom end of the moving block (162), and a fireproof flame-retardant layer (112) is arranged below the cover plate (1).
8. The new energy battery liquid cooling tray with the built-in full-package liquid cooling system according to claim 1, wherein a plurality of small holes (17) for ventilation are formed in the cover plate (1), a stabilizing piece (25) is arranged on the inner side wall of the tray body (2), the stabilizing piece (25) comprises a pressing plate (251) and a spring (253), a pressing block (252) is arranged on the pressing plate (251), the pressing block (252) is connected with the inner side wall of the tray body (2) through the spring (253), and a shell (254) is sleeved outside the spring (253).
9. The new energy battery liquid cooling tray with the built-in full-package liquid cooling system as claimed in claim 1, wherein a rotary fan (19) for heat dissipation is sleeved on an output shaft of the motor; the rotary fan (19), the disc body (2), the motor and the cover plate (1) are sleeved with a protection net (18).
CN202310303978.4A 2023-03-27 2023-03-27 New energy battery liquid cooling tray of built-in full package liquid cooling system Active CN116315375B (en)

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