CN115528363A - Reinforced battery tray and battery pack - Google Patents

Reinforced battery tray and battery pack Download PDF

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Publication number
CN115528363A
CN115528363A CN202211225200.8A CN202211225200A CN115528363A CN 115528363 A CN115528363 A CN 115528363A CN 202211225200 A CN202211225200 A CN 202211225200A CN 115528363 A CN115528363 A CN 115528363A
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CN
China
Prior art keywords
plate
liquid cooling
outer frame
liquid
honeycomb
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202211225200.8A
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Chinese (zh)
Inventor
陈通
王海燕
刘杨
曹开强
姚玉杰
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Jiangsu Wenxuan Thermal Management System Co ltd
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Jiangsu Wenxuan Thermal Management System Co ltd
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Priority to CN202211225200.8A priority Critical patent/CN115528363A/en
Publication of CN115528363A publication Critical patent/CN115528363A/en
Pending legal-status Critical Current

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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
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/61—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
    • H01M10/62—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
    • H01M10/6554—Rods or plates
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
    • H01M10/6567—Liquids
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
    • H01M10/6567—Liquids
    • H01M10/6568—Liquids characterised by flow circuits, e.g. loops, located externally to the cells or cell casings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/658—Means for temperature control structurally associated with the cells by thermal insulation or shielding
    • 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
    • H01M50/244—Secondary casings; Racks; Suspension devices; Carrying devices; Holders characterised by their mounting method
    • 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
    • H01M50/258—Modular batteries; Casings provided with means for assembling
    • 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
    • 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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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Secondary Cells (AREA)

Abstract

The application relates to the field of new energy electric vehicles and energy storage, and discloses a reinforced battery tray and a battery pack, wherein the reinforced battery tray comprises an outer frame assembly, a liquid cooling plate, a honeycomb plate and a supporting plate; wherein, the liquid cooling plate is connected with the upper end part of the outer frame component; the supporting plate is connected to the lower end part of the outer frame component; the honeycomb plate is positioned on the inner side of the outer frame component and positioned between the liquid cooling plate and the supporting plate; the outer edge part of the honeycomb plate is connected to the outer frame component; the upper end of the honeycomb plate is abutted against the bottom of the liquid cooling plate and supports the liquid cooling plate. The liquid cooling plate can be supported, the bearing performance of the liquid cooling plate is enhanced, the liquid cooling plate is prevented from deforming, and then the heat dissipation effect of the liquid cooling plate on the battery is improved.

Description

Reinforced battery tray and battery pack
Technical Field
The application relates to the field of new energy electric vehicles and energy storage, in particular to a reinforced battery tray and a battery pack.
Background
With the continuous development of the automotive industry, gasoline or diesel powered vehicles are gradually being replaced by electric vehicles. The battery pack is used as an energy storage device of the electric vehicle and is used as the only power source for driving the electric vehicle to run, and the stored energy and the safety guarantee coefficient of the battery directly determine the performance of the electric vehicle.
At present, a battery and a liquid cooling plate are generally provided in a battery pack of an electric vehicle, the battery is placed on the liquid cooling plate so as to be cooled by the liquid cooling plate, and the liquid cooling plate needs to bear the entire weight of the battery. However, since the structural strength of the liquid cooling plate is low, when bearing the weight of the battery, the liquid cooling plate is at risk of being bent and deformed, and the bent liquid cooling plate cannot be well attached to the battery, so that the heat dissipation effect of the battery can be affected.
Disclosure of Invention
The technical problem that this application will be solved is to overcome prior art's defect, provides a strenghthened type battery tray, and it can hold the liquid cooling board, and the bearing performance of reinforcing liquid cooling board prevents that the liquid cooling board from warping, and then promotes the radiating effect of liquid cooling board to the battery.
In order to solve the technical problem, the technical scheme of the application is as follows: a reinforced battery tray comprises an outer frame component, a liquid cooling plate, a honeycomb plate and a supporting plate; wherein,
the liquid cooling plate is connected to the upper end part of the outer frame component;
the supporting plate is connected to the lower end part of the outer frame component;
the honeycomb plate is positioned on the inner side of the outer frame component and positioned between the liquid cooling plate and the supporting plate;
the outer edge part of the honeycomb plate is connected to the outer frame component;
the upper end of the honeycomb plate is abutted against the bottom of the liquid cooling plate and supports the liquid cooling plate.
Optionally, the outer frame assembly, the liquid cooling plate and the supporting plate are surrounded to form a closed installation cavity for accommodating the honeycomb plate, and a protective gas is filled in the installation cavity;
and/or the outside portion of honeycomb panel with outer frame subassembly brazed connection or adhesive bonding, the upper end of honeycomb panel with the liquid cooling board offsets and with liquid cooling board brazed connection or adhesive bonding, the lower tip of honeycomb panel with layer board brazed connection or adhesive bonding.
Further provides a concrete structure of the liquid cooling plate, wherein the liquid cooling plate comprises a runner plate and a flat plate; wherein,
the runner plate is positioned below the flat plate and is connected with the flat plate;
the flow channel plate is provided with a channel deformation part, and a medium channel is formed between the channel deformation part and the flat plate;
the honeycomb plate is attached to the runner plate and supports the runner plate;
the upper end of the honeycomb panel has a recess that fits and conforms to the channel deformation.
Further provides a concrete structure of the outer frame component, wherein the outer frame component comprises a plurality of frames which are sequentially connected end to form a closed loop; wherein,
the frame comprises an inner frame part and an outer frame part;
the upper end part of the outer frame part is higher than the upper end part of the inner frame part, and an upper step part is arranged between the upper end part of the outer frame part and the upper end part of the inner frame part;
a lower end portion of the outer frame portion is lower than a lower end portion of the inner frame portion, and a lower step portion is provided between the lower end portion of the outer frame portion and the lower end portion of the inner frame portion;
the outer edge part of the liquid cooling plate is connected to the upper end part of the inner frame part and is abutted against the upper step part;
the outer edge part of the supporting plate is connected to the lower end part of the inner frame part and is abutted against the lower step part;
the outer edge part of the honeycomb plate is connected with the inner frame part.
Optionally, in order to improve the heat insulation effect, a bottom guard plate is further connected to the lower end part of the outer frame assembly;
the bottom guard plate is located below the supporting plate, and a heat insulation material layer is arranged between the bottom guard plate and the supporting plate.
Further provides a concrete structure of the liquid cooling plate, wherein a medium channel is arranged in the liquid cooling plate; the medium channel comprises a liquid inlet flow channel, a liquid outlet flow channel, a first longitudinal flow channel, a second longitudinal flow channel, a third longitudinal flow channel, a plurality of first branch flow channels and a plurality of second branch flow channels;
the liquid inlet flow channel is communicated with the first longitudinal flow channel;
the first longitudinal flow channel is communicated with the second longitudinal flow channel through a plurality of first branch flow channels;
the second longitudinal flow channel is communicated with the third longitudinal flow channel through a plurality of second branch flow channels;
the liquid outlet flow passage is communicated with the third longitudinal flow passage.
Optionally, the liquid cooling plate is provided with a first cooling area, a second cooling area, a third cooling area and a fourth cooling area which are sequentially distributed in parallel;
a plurality of the first branch flow passages are located in the first cooling zone and the second cooling zone;
a plurality of the second branch flow passages are located in the third cooling zone and the fourth cooling zone.
Optionally, the upper end of the liquid cooling plate is connected with a mounting beam for positioning and fixing a battery placed on the liquid cooling plate;
and/or the upper end part of the liquid cooling plate is connected with a liquid inlet joint and a liquid outlet joint.
The application also provides a battery pack, which comprises the reinforced battery tray, a box cover and at least one battery; wherein,
the battery is mounted on the liquid cooling plate;
the case cover is connected to the upper end of the outer frame assembly and is used for covering the battery.
Optionally, the upper end of the liquid cooling plate is connected with a liquid inlet joint and a liquid outlet joint;
the liquid inlet joint and the liquid outlet joint respectively penetrate through the side wall of the box cover and extend out of the box cover;
sealing rings are arranged between the liquid inlet joint and the box cover and between the liquid outlet joint and the box cover;
and a sealing gasket is arranged between the box cover and the outer frame component.
After the technical scheme is adopted, the honeycomb plate, the liquid cooling plate and the supporting plate are connected to the outer frame component, the liquid cooling plate is used for placing a battery, the liquid cooling plate is supported by the honeycomb plate, the bearing performance of the liquid cooling plate is enhanced, the liquid cooling plate is prevented from being bent and deformed, the liquid cooling plate can be kept flat, the laminating degree between the liquid cooling plate and the battery is improved, the heat dissipation effect on the battery is improved, the performance of the battery is improved, and the performance of the battery is prevented from being reduced due to high temperature. And the honeycomb plate is provided with honeycomb-shaped holes, so that the weight can be reduced as much as possible on the premise of improving the supporting strength, and the honeycomb plate has the advantages of light weight, high strength and difficulty in shearing. Because the gas layer in the honeycomb plate is divided into a plurality of closed gaps by the honeycomb plate, the gas is prevented from flowing, sound waves and heat are not easy to spread, and the sound insulation, noise reduction and heat insulation performance are improved. By arranging the honeycomb plates with different specifications and sizes, the natural frequency of the honeycomb plates can be adjusted, the problems of resonance, noise and the like are solved, and the NVH (Noise, vibration and Harshness, namely the Noise, vibration and sound Vibration roughness of the automobile) performance is improved.
Drawings
Fig. 1 is a schematic structural view of a reinforced battery tray of the present application;
fig. 2 is a partial cross-sectional view of a reinforced battery tray of the present application;
fig. 3 is an assembled exploded view of the reinforced battery tray of the present application;
FIG. 4 is a schematic structural view of a liquid cooled panel of the present application;
fig. 5 is a partially assembled exploded view of the reinforced battery tray of the present application;
FIG. 6 is a schematic structural view of a honeycomb panel and a runner plate of the present application;
fig. 7 is a schematic structural view of a battery pack of the present application;
fig. 8 is an exploded view of the assembly of the battery pack of the present application;
fig. 9 is a cross-sectional view of a battery pack of the present application;
fig. 10 is a detail view of a portion of fig. 9.
Detailed Description
In order that the contents of the present application may be more readily understood, a more particular description of the present application will now be rendered by reference to specific embodiments that are illustrated in the appended drawings. In the description of the present application, "a plurality" means two or more unless otherwise specified.
Example one
As shown in fig. 1 to 6, a reinforced battery tray includes an outer frame assembly 100, a liquid cooling plate 200, a honeycomb plate 1 and a pallet 2; wherein,
the liquid cooling plate 200 is connected to the upper end of the outer frame assembly 100;
the pallet 2 is attached to the lower end of the outer frame assembly 100;
the honeycomb plate 1 is positioned inside the outer frame assembly 100 and between the liquid cooling plate 200 and the pallet 2;
the outer edge part of the honeycomb plate 1 is connected to the outer frame assembly 100;
the upper end part of the honeycomb plate 1 is abutted against the bottom of the liquid cooling plate 200 and supports the liquid cooling plate 200; specifically, honeycomb panel 1 liquid cold plate 200 with layer board 2 is all connected on the outer frame subassembly 100, be used for placing battery 42 on the liquid cold plate 200, through honeycomb panel 1 supports and lives liquid cold plate 200 has strengthened liquid cold plate 200's bearing performance has prevented liquid cold plate 200 is buckled the deformation by the pressure, can make liquid cold plate 200 keeps leveling, and then makes laminating degree between liquid cold plate 200 and the battery 42 improves, has promoted the radiating effect to battery 42, and then has promoted battery 42's performance, avoids high temperature to lead to battery 42 performance to descend.
More specifically, the honeycomb panel 1 has honeycomb-shaped holes, so that the weight of the honeycomb panel can be reduced as much as possible on the premise of improving the supporting strength, and therefore, the honeycomb panel 1 has the advantages of light weight, high strength and difficulty in shearing.
In addition, since the gas layer in the honeycomb panel 1 is partitioned into a plurality of closed spaces by the honeycomb panel 1, gas flow is prevented, and sound waves and heat are not easily transmitted, thereby improving sound insulation, noise reduction and heat insulation properties. By arranging the honeycomb plates 1 with different specifications and sizes, the natural frequency of the honeycomb plates 1 can be adjusted, the problems of resonance, noise and the like are solved, and the NVH (Noise, vibration and Harshness, namely the Noise, vibration and sound Vibration roughness of an automobile) performance is improved.
Further specifically, the manufacture of the honeycomb plate 1 does not need a special die, can be cut into required sizes, is easy for large-scale production and processing, can be manufactured, assembled and matched with a welding production line at the same time, has no special requirements on production line arrangement, does not need additional warehouse to store components such as raw materials, and is convenient to produce and low in production cost.
In some embodiments, the honeycomb plate 1 is made of aluminum or steel, and is formed into a honeycomb shape by a welding process, a laser welding process or an adhesive process;
the cellular board 1 includes: a single honeycomb or a combination of a honeycomb, an upper plate and a lower plate; the honeycomb, the upper plate and the lower plate are connected through welding or gluing.
Specifically, in the composite structure, the honeycomb is clamped between the upper plate and the lower plate, the upper end and the lower end of the honeycomb are respectively connected with the upper plate and the lower plate, and the connection mode adopts brazing connection or adhesive connection.
As shown in fig. 1 to 6, the outer frame assembly 100, the liquid cooling plate 200 and the supporting plate 2 surround to form a closed installation cavity for accommodating the honeycomb plate 1, and the installation cavity is filled with a protective gas; specifically, the protective gas is nitrogen;
the outer edge part of the honeycomb plate 1 is connected with the outer frame assembly 100 in a brazing or gluing mode, the upper end part of the honeycomb plate 1 abuts against the liquid cooling plate 200 and is connected with the liquid cooling plate 200 in a brazing or gluing mode, and the lower end part of the honeycomb plate 1 is connected with the supporting plate 2 in a brazing or gluing mode; specifically, the deformation of the liquid cooling plate 200 is restrained by the honeycomb plate 1 and the supporting plate 2, so that the liquid cooling plate 200 can be prevented from deforming, the flatness of the liquid cooling plate 200 is improved, and the bending resistance and torsion resistance of the liquid cooling plate 200 are improved. And the dimensional accuracy of the honeycomb plate 1 in the height direction is about 0.05mm, and the height dimension can be effectively controlled.
In this embodiment, the liquid cooling plate 200 is brazed or adhesively attached to the upper end portion of the outer frame assembly 100, and the pallet 2 is brazed or adhesively attached to the lower end portion of the outer frame assembly 100. The outer frame assembly 100, the liquid cooling plate 200, the supporting plate 2 and the honeycomb plate 1 can be integrally formed through nitrogen protection brazing, multiple welding modes such as argon arc welding and laser welding are not needed, the number of required devices is small, early investment is low, and requirements on production line arrangement and site space are low. After the brazing is finished, the installation cavity can be filled with nitrogen, the nitrogen can enable the honeycomb plate 1 to be in contact with the outside without air liquid, the honeycomb plate 1 is prevented from being corroded by oxygen and water vapor, the service life of the honeycomb plate 1 is prolonged, the service life can reach more than 40 years, and the service condition requirement of a passenger vehicle is far exceeded; or after the sealant is adopted for bonding, nitrogen is introduced into the installation cavity and the installation cavity is sealed.
As shown in fig. 2, 3, 5 and 6, the liquid cooling plate 200 may include a flow channel plate 3 and a flat plate 4; wherein,
the runner plate 3 is positioned below the flat plate 4 and is connected with the flat plate 4;
the flow channel plate 3 is provided with a channel deformation part 5, and a medium channel is formed between the channel deformation part 5 and the flat plate 4;
the honeycomb plate 1 is attached to the runner plate 3 and supports the runner plate 3;
the upper end of the honeycomb plate 1 is provided with a concave part 6 which is matched with the channel deformation part 5 and is jointed with the channel deformation part 5; specifically, the flow field plate 3 and the flat plate 4 are connected by soldering, and the battery 42 is placed on the flat plate 4.
As shown in fig. 1, 2, 3, 5, 7 and 8, the outer frame assembly 100 may include a plurality of frames 7 connected end to end in sequence to form a closed loop; wherein,
the frame 7 comprises an inner frame portion 8 and an outer frame portion 9;
an upper end portion of the outer frame portion 9 is higher than an upper end portion of the inner frame portion 8, and an upper stepped portion 10 is provided between the upper end portion of the outer frame portion 9 and the upper end portion of the inner frame portion 8;
a lower end portion of the outer frame portion 9 is lower than a lower end portion of the inner frame portion 8, and a lower step portion 11 is provided between the lower end portion of the outer frame portion 9 and the lower end portion of the inner frame portion 8;
the outer edge of the liquid cooling plate 200 is connected to the upper end of the inner frame 8 and abuts against the upper step 10;
the outer edge of the pallet 2 is connected to the lower end of the inner frame 8 and abuts against the lower step 11;
the outer edge of the honeycomb panel 1 is connected to the inner frame portion 8; specifically, the outer edge portion of the honeycomb panel 1 is connected to the inner frame portion 8 by brazing, the outer edge portion of the liquid-cooled panel 200 is connected to the upper end portion of the inner frame portion 8 by brazing, and the outer edge portion of the liquid-cooled panel 200 abuts against the upper stepped portion 10 to position the frame 7 and the liquid-cooled panel 200. The outer edge of the pallet 2 is soldered to the lower end of the inner frame 8, and the outer edge of the pallet 2 abuts against the lower step 11 to position the frame 7 and the pallet 2.
In this embodiment, the number of the frames 7 is 4, and the 4 frames 7 are sequentially connected end to form a rectangular structure.
Specifically, after the liquid cooling plate 200 is supported by the honeycomb plate 1, the strength requirement of the liquid cooling plate 200 itself can be reduced, so that the thickness of the runner plate 3 and the flat plate 4 can be changed from the traditional thickness of 1.5mm to 0.8mm, and the material cost can be saved. Meanwhile, the strength requirement of the frame 7 can be reduced, the cross section of the frame 7 can be smaller, and the material cost of the frame 7 is further saved.
In some embodiments, the flow field plate 3 is formed by stamping or CNC machining, and the flat plate 4 is formed by stamping or laser cutting.
As shown in fig. 8 and 10, a bottom guard plate 12 may be further connected to the lower end of the outer frame assembly 100;
the bottom guard plate 12 is positioned below the supporting plate 2, and a heat insulation material layer 13 is arranged between the bottom guard plate 12 and the supporting plate 2, so that the heat insulation performance is improved, and the internal temperature of the battery pack is continuously stabilized under the optimal working condition; specifically, the bottom guard plate 12 is provided with a reinforced deformation part for improving the structural strength, and the reinforced deformation part can be formed by stamping; in this embodiment, the outer edge of the bottom guard plate 12 may be riveted to the lower end surface of the outer frame 9, and the thermal insulation material layer 13 may be thermal insulation cotton or aerogel.
As shown in fig. 4, a medium channel may be provided in the liquid-cooling plate 200;
the medium passage is, for example and without limitation, a structure including a liquid inlet flow passage 14, a liquid outlet flow passage 15, a first longitudinal flow passage 16, a second longitudinal flow passage 17, a third longitudinal flow passage 18, a plurality of first branch flow passages and a plurality of second branch flow passages;
the liquid inlet flow channel 14 is communicated with the first longitudinal flow channel 16;
the first longitudinal flow passage 16 is communicated with the second longitudinal flow passage 17 through a plurality of first branch flow passages;
the second longitudinal flow passage 17 is communicated with the third longitudinal flow passage 18 through a plurality of second branch flow passages;
the liquid outlet flow passage 15 is communicated with the third longitudinal flow passage 18.
Through the connection between the first longitudinal flow channel 16, the second longitudinal flow channel 17, the third longitudinal flow channel 18, the first branch flow channels and the second branch flow channels, the cooling water channels which are uniformly distributed are formed, the heat dissipation effect on the battery 42 can be improved, the performance of the battery 42 is improved, and the performance reduction of the battery 42 caused by high temperature is avoided.
As shown in fig. 4, a plurality of the first branched flow passages including a first cross flow passage 20, a second cross flow passage 21, a third cross flow passage 22, a fourth cross flow passage 23, a first branch 27, a second branch 28, a third branch 29, a fourth branch 30, and a fifth branch 31, for example, but not limited to, the following structures; the second branch flow passages comprise a confluence flow passage 19, a fifth cross flow passage 24, a sixth cross flow passage 25, a branch flow passage 26, a diversion gap 32 and a diversion blocking part 33; wherein,
the liquid inlet flow channel 14 is communicated with the first longitudinal flow channel 16;
the left end parts of the first transverse flow passage 20 and the second transverse flow passage 21 are respectively communicated with the first longitudinal flow passage 16;
the right end parts of the first transverse flow passage 20 and the second transverse flow passage 21 are respectively communicated with the second longitudinal flow passage 17;
the left end of the first cross flow passage 20 and the left end of the second cross flow passage 21 are also communicated through a first branch 27;
the right end part of the first transverse flow passage 20 and the right end part of the second transverse flow passage 21 are also communicated through a second branch 28;
the second branch 28 is communicated with the second longitudinal flow passage 17 through a third branch 29; specifically, the cooling water flows from the liquid inlet flow passage 14 into the left end portion of the first transverse flow passage 20 and the left end portion of the second transverse flow passage 21, and then flows into the right end portion of the first transverse flow passage 20 and the right end portion of the second transverse flow passage 21; in the flowing process, the cooling water exchanges heat with the battery 42, so that the water temperature at the right end is higher than that at the left end in the first transverse flow passage 20 and the second transverse flow passage 21, the cooling effect at the right end is slightly poorer, the second branch 28 and the third branch 29 are arranged, the distribution of the cooling water at the right end is increased, and the cooling effect at the right end is improved;
the left end parts of the third transverse flow passage 22 and the fourth transverse flow passage 23 are respectively communicated with the first longitudinal flow passage 16;
the right end part of the fourth transverse flow passage 23 is communicated with the second longitudinal flow passage 17;
the right end of the third transverse flow passage 22 is communicated with the fourth transverse flow passage 23 through two fourth branches 30;
the two fourth branches 30 are communicated with each other through a fifth branch 31; the reason for providing the fourth branch 30 and the fifth branch 31 is the same as the reason for providing the second branch 28 and the third branch 29, and is not described herein again;
the fifth transverse flow channels 24 are arranged in parallel, the branch flow channels 26 are arranged in parallel, and the number of the fifth transverse flow channels 24 is larger than that of the branch flow channels 26;
the left end of the fifth transverse flow passage 24 is communicated with the third longitudinal flow passage 18;
the right end part of the fifth transverse flow passage 24 is communicated with the left end part of the branch flow passage 26;
the right end part of the branch channel 26 is communicated with the second longitudinal channel 17 through a guide gap 32; in this embodiment, there are 4 fifth transverse channels 24, and there are 3 branch channels 26. Specifically, the cooling water in the liquid inlet flow channel 14 flows into the first longitudinal flow channel 16, then is divided into the first transverse flow channel 20, the second transverse flow channel 21, the third transverse flow channel 22 and the fourth transverse flow channel 23, and then flows into the second longitudinal flow channel 17. The cooling water in the second longitudinal flow passage 17 is firstly distributed into the branch flow passages 26 through the diversion gaps 32, and then further distributed into the fifth transverse flow passages 24, so that the uniform distribution of the cooling water in each fifth transverse flow passage 24 can be ensured;
the sixth transverse flow passages 25 are arranged in parallel;
the left end of the sixth transverse flow passage 25 is communicated with the confluent passage 19;
one end of the flow collecting passage 19 is communicated with the third longitudinal flow passage 18;
the liquid outlet flow passage 15 is communicated with the third longitudinal flow passage 18;
the right end of the sixth transverse flow passage 25 is communicated with the second longitudinal flow passage 17;
at least one shunt blocking part 33 is arranged between the right end part of the sixth transverse flow passage 25 and the second longitudinal flow passage 17; specifically, the cooling water in the second longitudinal flow passage 17 is dispersed by the flow dividing blocking part 33, and then flows into the sixth transverse flow passages 25, then flows into the converging flow passage 19, then flows into the third longitudinal flow passage 18, and finally is discharged from the liquid outlet flow passage 15; in this embodiment, there are 4 sixth transverse flow channels 25.
As shown in fig. 4, the liquid cooling plate 200 has a first cooling area 34, a second cooling area 35, a third cooling area 36 and a fourth cooling area 37 which are sequentially distributed in parallel;
a plurality of the first branch flow passages are located in the first cooling zone 34 and the second cooling zone 35;
a plurality of the second branch flow passages are located in the third cooling zone 36 and the fourth cooling zone 37.
Specifically, the first cross flow channel 20 and the second cross flow channel 21 are located in the first cooling area 34;
the third cross flow channel 22 and the fourth cross flow channel 23 are located in the second cooling zone 35;
the fifth cross runners 24 and the sub runners 26 are located in the third cooling zone 36;
the sixth cross flow channel 25 and the junction channel 19 are located in the fourth cooling zone 37; specifically, the liquid cooling plate 200 is used for placing 4 batteries 42, a first battery 42 is used for placing in the first cooling area 34, a second battery 42 is used for placing in the second cooling area 35, a third battery 42 is used for placing in the third cooling area 36, and a fourth battery 42 is used for placing in the fourth cooling area 37.
As shown in fig. 1 to 10, the upper end of the liquid cooling plate 200 is connected with a mounting beam 38 for positioning and fixing the battery 42 placed on the liquid cooling plate 200; specifically, the mounting beam 38 is used for abutting against the battery 42 to position the battery 42, and the battery 42 can be fixedly connected to the mounting beam 38 through a fastener; in the present embodiment, there are two mounting beams 38;
the upper end part of the liquid cooling plate 200 is connected with a liquid inlet joint 39 and a liquid outlet joint 40; specifically, the liquid inlet joint 39 is communicated with the liquid inlet flow channel 14, and the liquid outlet joint 40 is communicated with the liquid outlet flow channel 15.
Example two
As shown in fig. 7 to 10, a battery pack includes the reinforced battery tray according to the first embodiment, and further includes a case cover 41 and at least one battery 42; wherein,
the battery 42 is mounted on the liquid cooling plate 200;
the cover 41 is attached to the upper end portion of the outer frame assembly 100 and serves to cover the battery 42; specifically, be equipped with heat conduction pad 43 between battery 42 and the liquid cooling board 200, after the plane degree of liquid cooling board 200 improves, reducible heat conduction pad 43's thickness demand, and then can promote heat transfer performance.
As shown in fig. 7 to 10, the upper end of the liquid cooling plate 200 is connected with a liquid inlet joint 39 and a liquid outlet joint 40;
the liquid inlet joint 39 and the liquid outlet joint 40 respectively penetrate through the side wall of the box cover 41 and extend out of the box cover 41;
sealing rings 44 are arranged between the liquid inlet joint 39 and the box cover 41 and between the liquid outlet joint 40 and the box cover 41;
a sealing gasket 45 is further arranged between the box cover 41 and the outer frame assembly 100; in the present embodiment, the lower end portion of the case cover 41 is provided with a flange portion 46 extending outward;
the flange side portion 46 is connected to the inner frame portion 8 by a fastener;
the outer side wall of the flange portion 46 abuts against the upper step portion 10 to position the cover 41;
the upper surface of the flange portion 46 is aligned with the upper surface of the outer frame portion 9;
specifically, a blind rivet nut 47 is installed in the inner frame portion 8, and a connecting bolt 48 is screwed into the blind rivet nut 47 after passing through the flange side portion 46, thereby fastening the flange side portion 46 to the inner frame portion 8.
The working principle of the application is as follows:
the utility model discloses a battery pack, including frame subassembly 100, honeycomb panel 1, liquid cold plate 200, layer board 2, liquid cold plate 200 is used for placing battery 42 on the liquid cold plate 200, through honeycomb panel 1 supports live liquid cold plate 200 has strengthened liquid cold plate 200's bearing performance has prevented liquid cold plate 200 is buckled the deformation, can make liquid cold plate 200 keeps leveling, and then makes laminating degree between liquid cold plate 200 and the battery 42 improves, has promoted the radiating effect to battery 42, and then has promoted battery 42's performance, avoids high temperature to lead to battery 42 performance to descend. In addition, the honeycomb plate 1 has honeycomb-shaped holes, so that the weight can be reduced as much as possible on the premise of improving the supporting strength, and therefore, the honeycomb plate 1 has the advantages of light weight, high strength and difficulty in shearing. Because the gas layer in the honeycomb panel 1 is divided into a plurality of closed gaps by the honeycomb panel 1, the gas is prevented from flowing, and sound waves and heat are difficult to spread, thereby improving the sound insulation, noise reduction and heat insulation performance. By arranging the honeycomb plates 1 with different specifications and sizes, the natural frequency of the honeycomb plates 1 can be adjusted, the problems of resonance, noise and the like are solved, and the NVH (Noise, vibration and Harshness, namely the Noise, vibration and sound Vibration roughness of an automobile) performance is improved.
The above embodiments are described in further detail to solve the technical problems, technical solutions and advantages of the present application, and it should be understood that the above embodiments are only examples of the present application and are not intended to limit the present application, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims (10)

1. A reinforced battery tray is characterized by comprising an outer frame assembly (100), a liquid cooling plate (200), a honeycomb plate (1) and a supporting plate (2); wherein,
the liquid cooling plate (200) is connected to the upper end part of the outer frame assembly (100);
the supporting plate (2) is connected to the lower end part of the outer frame assembly (100);
the honeycomb plate (1) is positioned at the inner side of the outer frame assembly (100) and positioned between the liquid cooling plate (200) and the supporting plate (2);
the outer edge part of the honeycomb plate (1) is connected to the outer frame assembly (100);
the upper end of the honeycomb plate (1) is abutted against the bottom of the liquid cooling plate (200) and supports the liquid cooling plate (200).
2. The reinforced battery tray of claim 1,
the outer frame assembly (100), the liquid cooling plate (200) and the supporting plate (2) surround to form a closed installation cavity for accommodating the honeycomb plate (1), and protective gas is filled in the installation cavity;
and/or the outer edge part of the honeycomb plate (1) is in brazing connection or adhesive connection with the outer frame assembly (100), the upper end part of the honeycomb plate (1) abuts against the liquid cooling plate (200) and is in brazing connection or adhesive connection with the liquid cooling plate (200), and the lower end part of the honeycomb plate (1) is in brazing connection or adhesive connection with the support plate (2).
3. The reinforced battery tray according to claim 1, wherein the liquid-cooled plate (200) includes a runner plate (3) and a flat plate (4); wherein,
the runner plate (3) is positioned below the flat plate (4) and is connected with the flat plate (4);
the flow channel plate (3) is provided with a channel deformation part (5), and a medium channel is formed between the channel deformation part (5) and the flat plate (4);
the honeycomb plate (1) is attached to the runner plate (3) and supports the runner plate (3);
the upper end of the honeycomb plate (1) is provided with a concave part (6) which is matched with the channel deformation part (5) and is attached to the channel deformation part (5).
4. The reinforced battery tray according to claim 1, wherein the outer frame assembly (100) comprises a plurality of frames (7) connected end to end in sequence to form a closed loop; wherein,
the frame (7) comprises an inner frame part (8) and an outer frame part (9);
the upper end part of the outer frame part (9) is higher than the upper end part of the inner frame part (8), and an upper step part (10) is arranged between the upper end part of the outer frame part (9) and the upper end part of the inner frame part (8);
the lower end of the outer frame part (9) is lower than the lower end of the inner frame part (8), and a lower step part (11) is arranged between the lower end of the outer frame part (9) and the lower end of the inner frame part (8);
the outer edge part of the liquid cooling plate (200) is connected to the upper end part of the inner frame part (8) and is abutted against the upper step part (10);
the outer edge part of the supporting plate (2) is connected to the lower end part of the inner frame part (8) and is abutted against the lower step part (11);
the outer edge of the honeycomb panel (1) is connected to the inner frame (8).
5. The reinforced battery tray of claim 1,
the lower end part of the outer frame assembly (100) is also connected with a bottom guard plate (12);
the bottom guard plate (12) is located below the supporting plate (2), and a heat-insulating material layer (13) is arranged between the bottom guard plate (12) and the supporting plate (2).
6. The reinforced battery tray according to claim 1, wherein the liquid cooling plate (200) is provided with a medium channel therein; the medium channel comprises a liquid inlet flow channel (14), a liquid outlet flow channel (15), a first longitudinal flow channel (16), a second longitudinal flow channel (17), a third longitudinal flow channel (18), a plurality of first branch flow channels and a plurality of second branch flow channels;
the liquid inlet flow channel (14) is communicated with the first longitudinal flow channel (16);
the first longitudinal flow channel (16) is communicated with the second longitudinal flow channel (17) through a plurality of first branch flow channels;
the second longitudinal flow channel (17) is communicated with the third longitudinal flow channel (18) through a plurality of second branch flow channels;
the liquid outlet flow passage (15) is communicated with the third longitudinal flow passage (18).
7. The reinforced battery tray as recited in claim 6, wherein the liquid cooling plate (200) is provided with a first cooling area (34), a second cooling area (35), a third cooling area (36) and a fourth cooling area (37) which are distributed in parallel in sequence;
a plurality of said first branch flow channels being located in said first cooling zone (34) and said second cooling zone (35);
a plurality of the second branch flow passages are located in the third cooling zone (36) and the fourth cooling zone (37).
8. The reinforced battery tray of claim 1,
the upper end part of the liquid cooling plate (200) is connected with a mounting beam (38) used for positioning and fixing a battery (42) arranged on the liquid cooling plate (200);
and/or the upper end part of the liquid cooling plate (200) is connected with a liquid inlet joint (39) and a liquid outlet joint (40).
9. A battery pack, characterized in that it comprises a reinforced battery tray according to any one of claims 1 to 8, and it further comprises a cover (41) and at least one battery (42); wherein,
the battery (42) is mounted on the liquid cooling plate (200);
the cover 41 is attached to an upper end portion of the outer frame assembly 100 and covers the battery 42.
10. The battery pack according to claim 9,
the upper end part of the liquid cooling plate (200) is connected with a liquid inlet joint (39) and a liquid outlet joint (40);
the liquid inlet joint (39) and the liquid outlet joint (40) respectively penetrate through the side wall of the box cover (41) and extend out of the box cover (41);
sealing rings (44) are arranged between the liquid inlet joint (39) and the tank cover (41) and between the liquid outlet joint (40) and the tank cover (41);
and a sealing gasket (45) is arranged between the box cover (41) and the outer frame assembly (100).
CN202211225200.8A 2022-10-09 2022-10-09 Reinforced battery tray and battery pack Pending CN115528363A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202211225200.8A CN115528363A (en) 2022-10-09 2022-10-09 Reinforced battery tray and battery pack

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202211225200.8A CN115528363A (en) 2022-10-09 2022-10-09 Reinforced battery tray and battery pack

Publications (1)

Publication Number Publication Date
CN115528363A true CN115528363A (en) 2022-12-27

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ID=84701944

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202211225200.8A Pending CN115528363A (en) 2022-10-09 2022-10-09 Reinforced battery tray and battery pack

Country Status (1)

Country Link
CN (1) CN115528363A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3144892A1 (en) * 2023-01-05 2024-07-12 Renault S.A.S Cooling and support device for an electrochemical module.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3144892A1 (en) * 2023-01-05 2024-07-12 Renault S.A.S Cooling and support device for an electrochemical module.

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