CN112133861B - Power lithium battery module integrated configuration - Google Patents
Power lithium battery module integrated configuration Download PDFInfo
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- CN112133861B CN112133861B CN202011086437.3A CN202011086437A CN112133861B CN 112133861 B CN112133861 B CN 112133861B CN 202011086437 A CN202011086437 A CN 202011086437A CN 112133861 B CN112133861 B CN 112133861B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/613—Cooling or keeping cold
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
- H01M10/625—Vehicles
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/653—Means for temperature control structurally associated with the cells characterised by electrically insulating or thermally conductive materials
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/655—Solid structures for heat exchange or heat conduction
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/655—Solid structures for heat exchange or heat conduction
- H01M10/6551—Surfaces specially adapted for heat dissipation or radiation, e.g. fins or coatings
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/655—Solid structures for heat exchange or heat conduction
- H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2220/00—Batteries for particular applications
- H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The invention provides a power lithium battery module combined structure which comprises an insulating base, a fixing groove, a plurality of upper transmission heat dissipation blocks, at least one group of single battery units and an upper insulation combined cover, wherein the fixing groove is arranged on the insulating base and used for battery unit combination, the upper transmission heat dissipation blocks are formed by splicing the single heat dissipation units and are arranged along the inner peripheral side of the fixing groove, the single battery units are used for forming battery unit combination, the bottom of the battery unit combination is fixed in the fixing groove, the battery unit combination is separated from the fixing groove by the upper transmission heat dissipation blocks which are spliced on the inner peripheral side of the fixing groove, and the upper insulation combined cover is used for fixing the upper part of the battery. The battery case of battery cell unit adopts the aluminium interior casing, sets up the outside graphite alkene heat-conducting layer in the aluminium, sets up at the outside copper shell body of graphite alkene heat-conducting layer, and graphite alkene heat-conducting layer can give off the heat transfer to the copper shell body of the casing in the aluminium, at the first heat dissipation channel and the second heat dissipation channel that set up by on the copper shell body.
Description
Technical Field
The invention relates to the technical field of power lithium batteries, in particular to a power lithium battery module combined structure.
Background
The application of the power lithium battery is developed from the field of electronic devices such as mobile phones, notebook computers, tablet computers and digital products to the field of electric automobiles, the performance requirements and the assembly of the power lithium battery are more strict, for example, in the use of the electric automobiles, the power lithium battery is required to provide longer endurance, which requires that the performance of a single battery is increased on one hand, and more single batteries are combined to form a power lithium battery module combination on the other hand, however, the more the power lithium battery modules are combined, the higher the safety requirement is.
The main problems to be solved by the integral power lithium battery module combination are as follows: the lithium battery module is insulated from the mounting end and isolated, a better heat dissipation path is provided, heat generated by the power lithium battery module combination is rapidly conducted, and a single lithium battery is explosion-proof.
Disclosure of Invention
In view of the above, the present invention is directed to a power lithium battery module assembly structure.
The technical scheme adopted by the invention is as follows:
a power lithium battery module combination structure comprises
An insulating base is arranged on the base, and the insulating base is provided with a plurality of insulating grooves,
a fixing groove arranged on the insulating base and used for battery unit combination, a plurality of upper transmission radiating blocks formed by splicing single radiating units are arranged along the inner circumferential side of the fixing groove,
at least one group of single battery units for forming a battery unit combination,
the bottom of the battery unit combination is fixed in the fixing groove, and the battery unit combination is separated from the fixing groove by a plurality of spliced upper transmission radiating blocks on the inner circumferential side of the fixing groove,
and the insulating combined upper cover is used for fixing the upper part of the battery unit combination.
Furthermore, the two adjacent sides of the upper heat transfer radiating block on the inner peripheral side of the fixed groove are not connected with each other,
at least one lower transmission radiating block is arranged on the lower portion of the insulating base and is matched with the upper transmission radiating block, the lower transmission radiating block is in butt joint with the upper transmission radiating block, and therefore heat absorbed by the upper transmission radiating block is transmitted to the fixed end used for fixing the insulating base through the lower transmission radiating block.
Further, the insulating combination upper cover is provided with a conductive connecting piece which is used for connecting the positive pole column cap and the negative pole column cap of the two single battery units so as to combine the whole battery units to form a series connection.
Further, the insulation base and the insulation combination upper cover are made of plastics.
Further, the unit battery cell includes a battery case,
a positive pole column assembly and a negative pole column assembly arranged on the upper cover plate of the battery shell, and a safety valve assembly arranged between the positive pole column assembly and the negative pole column assembly,
a battery separator with micropores, which is arranged in the battery shell and used for fixing the anode post component and the cathode post component, a micropore ceramic plate which is pasted on the upper part of the battery separator with micropores is arranged on the upper part of the battery separator with micropores,
the upper part of the micropore ceramic plate is fixed by a safety valve component,
and a pressure buffering gap is arranged between the microporous ceramic plate and the upper cover plate.
Further, the positive pole post assembly comprises
A positive pole, the lower part of the positive pole is connected with the positive pole plate,
the positive post passes take micropore battery baffle, micropore potsherd, pressure buffering clearance to be connected with the positive post head to the upper end of upper cover plate, be provided with variable resistance element between positive post and the positive post head.
Further, the positive pole stud is fixed by a positive pole nut.
Further, the negative pole post assembly comprises
A negative pole column, the lower part of which is connected with the negative pole plate,
the negative pole post passes the battery separator with the micropores, the micropore ceramic plate and the pressure buffer gap to be connected with the upper end of the upper cover plate and the negative pole post head, and a variable resistance element is arranged between the negative pole post and the negative pole post head.
Further, the negative pole stud is fixed by a negative pole nut.
Further, the safety valve assembly includes
A porous press strip used for fixing the microporous ceramic plate,
a ceramic substrate with a cavity arranged at the upper part of the porous pressing strip,
the outer surface of the lower part of the ceramic substrate is provided with air holes which are uniformly arranged,
a sealing ring arranged on the upper part of the ceramic substrate for fixing the ceramic substrate,
the upper part of the sealing ring is provided with a sealing cover, the lower part of the sealing cover is butted with a cavity arranged in the ceramic substrate, and the sealing ring is provided with explosion-proof holes which are uniformly distributed.
Furthermore, the upper transfer heat dissipation block comprises an upper aluminum nitride ceramic base body, a downward upper slot is formed in the upper portion of the upper aluminum nitride ceramic base body, a copper substrate is arranged in the upper slot, or heat conduction glue is coated on the connecting portion of the copper substrate and the upper slot, so that the copper substrate is fixed in the upper slot through the heat conduction glue;
the lower part of the upper transmission radiating block is provided with an upward lower slot, the lower slot is fixed with the lower transmission radiating block, the lower transmission radiating block comprises a lower aluminum nitride ceramic matrix, an upward lower inserting strip is arranged on the lower aluminum nitride ceramic matrix, and the lower inserting strip is fixedly butted with the lower slot.
The variable resistance element comprises a nano-silica ceramic matrix, wherein an upper butt joint part and a lower butt joint part are respectively arranged at the upper part and the lower part of the nano-silica ceramic matrix, an upper electrode and a lower electrode are arranged on the surfaces of the upper butt joint part and the lower butt joint part, a plurality of first electrodes and second electrodes which are staggered and mutually isolated are arranged between the upper electrode and the lower electrode, the first electrodes are connected with the upper electrode and isolated from the lower electrode, and the second electrodes are connected with the lower electrode and isolated from the upper electrode.
The first electrode and the second electrode comprise copper bars, and graphene films are arranged on the outer sides of the copper bars.
The nano silicon dioxide ceramic matrix is in a micro-porous shape with a disordered structure, and metal cations formed by one or more of aluminum, copper and silver are added into the nano silicon dioxide ceramic matrix.
Further, the battery case comprises an aluminum inner shell, a graphene heat conduction layer arranged outside the aluminum inner shell and a copper outer shell arranged outside the graphene heat conduction layer, a plurality of first heat dissipation fins are arranged on the left side and the right side of the copper outer shell respectively, a first heat dissipation channel is formed between every two adjacent first heat dissipation fins, a plurality of second heat dissipation fins are arranged on the front side and the rear side of the copper outer shell respectively, and a second heat dissipation channel is formed between every two adjacent second heat dissipation fins.
Has the advantages that:
the base and the combined upper cover are made of plastic, and have good insulating property.
The battery shell of the single battery unit adopts an aluminum inner shell, the graphene heat conduction layer is arranged outside the aluminum inner shell, and the copper outer shell is arranged outside the graphene heat conduction layer.
The single battery unit has explosion-proof performance, a microporous battery partition plate is arranged in the single battery unit and used for fixing the positive pole column assembly and the negative pole column assembly, a microporous ceramic plate attached to the upper part of the microporous battery partition plate is arranged on the upper part of the microporous battery partition plate, the upper part of the microporous ceramic plate is fixed by a safety valve assembly, and a pressure buffering gap is arranged between the microporous ceramic plate and the upper cover plate; the safety valve component comprises a porous pressing strip, the porous pressing strip is used for fixedly arranging a microporous ceramic wafer, a ceramic substrate with a cavity is arranged on the upper portion of the porous pressing strip, air holes are uniformly formed in the outer surface of the lower portion of the ceramic substrate, a sealing ring is arranged on the upper portion of the ceramic substrate and used for fixing the ceramic substrate, a sealing cover is arranged on the upper portion of the sealing ring, the lower portion of the sealing cover is in butt joint with the cavity formed in the ceramic substrate, and explosion-proof holes are uniformly distributed in the sealing ring.
And fourthly, the variable resistance element is arranged in the single battery unit, and when the single battery unit is in short circuit or the temperature is too high, the resistance in the variable resistance element is increased, so that the blocking effect is achieved.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of an insulating base according to the present invention;
FIG. 3 is a schematic structural view of the upper cover of the insulation assembly of the present invention;
FIG. 4 is a schematic structural diagram of a unit cell according to the present invention;
FIG. 5 is a schematic view showing the internal structure of a unit cell according to the present invention;
FIG. 6 is a schematic view of a butt joint structure of an upper transfer heatsink slug and a lower transfer heatsink slug according to the present invention;
FIG. 7 is a top view of an upper transfer heat slug of the present invention;
fig. 8 is a schematic structural view of the variable resistive element according to the present invention.
The specific implementation mode is as follows:
the present invention will be described in detail below with reference to examples and the accompanying drawings.
Example 1
The invention provides a power lithium battery module combination structure, which comprises
An insulating base 1 is provided with a plurality of insulating base plates,
a fixing groove 102 for battery cell combination provided on the insulating base 1, a plurality of upper transfer radiating blocks 101 formed by splicing the unit radiating units are provided along the inner circumferential side of the fixing groove 102,
at least one set of unit cells 2 for constituting a battery cell assembly,
the bottom of the battery cell assembly is fixed in the fixing groove 102, and the battery cell assembly is spaced from the fixing groove 102 by a plurality of upper transfer heat dissipation blocks 101 coupled together at the inner circumferential side of the fixing groove 102,
an insulating combined upper cover 3 for fixing the upper part of the battery unit combination;
the upper heat-transferring blocks 101 are not connected to each other at two adjacent sides of the inner circumference of the fixing groove 102,
at least one lower transmission radiating block 100 is arranged on the lower portion of the insulating base 1 and is matched with the upper transmission radiating block 101, the lower transmission radiating block 100 is in butt joint with the upper transmission radiating block 101, and therefore heat absorbed by the upper transmission radiating block 101 is transmitted to the fixed end used for fixing the insulating base 1 through the lower transmission radiating block 100.
In the above, the insulating base 1 and the insulating combined upper cover 3 are made of plastic. Because the insulating base is made of plastic materials, the insulating base has good insulating performance, but the heat transfer performance is poor, and in order to dissipate heat generated by the power lithium battery module combination on the insulating base 1, an upper heat transfer and dissipation block 101 and a lower heat transfer and dissipation block 100 are arranged on the insulating base, the upper heat transfer and dissipation block 101 comprises an upper aluminum nitride ceramic matrix 1012, a downward upper slot is arranged at the upper part of the upper aluminum nitride ceramic matrix 1012, a copper substrate 1010 is arranged in the upper slot, or a heat conducting glue 1011 is coated at the connecting part of the copper substrate 1010 and the upper slot, so that the copper substrate is fixed in the upper slot through the heat conducting glue;
an upward lower slot 1013 is arranged at the lower part of the upper heat-dissipating transfer block 101, the lower slot 1013 is fixed to the lower heat-dissipating transfer block 100, the lower heat-dissipating transfer block 100 comprises a lower aluminum nitride ceramic substrate 1000, an upward lower insert 1001 is arranged on the lower aluminum nitride ceramic substrate 1000, and the lower insert 1001 is fixed to the lower slot 1013 in a butt joint manner.
In the above, the copper substrate 1010 is tightly attached to the copper outer casing of the unit cell, and the heat generated by the unit cell is dissipated 207 through the first heat dissipation channel 205 and the second heat dissipation channel, and is transferred to the copper substrate 1010 through the copper outer casing, transferred to the upper aluminum nitride ceramic substrate 1012 from the copper substrate 1010, transferred to the lower aluminum nitride ceramic substrate 1000 from the upper aluminum nitride ceramic substrate 1012, and transferred to the mounting portion from the lower aluminum nitride ceramic substrate 1000.
Generally, for example, in the use of an electric vehicle, the mounting part is made of a metal material, and the aluminum nitride ceramic substrate is transferred to the whole vehicle body, so that the vehicle body is not affected, and the aluminum nitride ceramic substrate has good heat transfer performance and insulating performance, and meets the design of insulating isolation from the mounting part.
In the above, the insulative combined upper cover 3 is provided with the conductive connector 4, and the conductive connector 4 is used for connecting the positive electrode tab and the negative electrode tab of the two unit battery cells 2 so as to combine the whole battery cells to form a series connection.
In the above, the unit cell 2 includes the battery case 200,
the battery case 200 comprises an aluminum inner shell, a graphene heat conduction layer arranged outside the aluminum inner shell, and a copper outer shell arranged outside the graphene heat conduction layer, wherein a plurality of first heat dissipation fins 206 are arranged on the left side and the right side of the copper outer shell respectively, a first heat dissipation channel 205 is formed between every two adjacent first heat dissipation fins, a plurality of second heat dissipation fins 208 are arranged on the front side and the rear side of the copper outer shell respectively, and a second heat dissipation channel 207 is formed between every two adjacent second heat dissipation fins.
The battery case of battery cell unit 2 adopts the aluminium interior casing, sets up the outside graphite alkene heat-conducting layer in the aluminium, sets up at the outside copper shell body of graphite alkene heat-conducting layer, because the coefficient of heat conductivity of graphite alkene is greater than the coefficient of heat conductivity of copper, therefore graphite alkene heat-conducting layer can give off the heat transfer to the copper shell body in the aluminium interior casing, first heat dissipation channel 205 and the second heat dissipation channel 207 that set up on by the copper shell body.
A positive electrode pillar assembly 201 and a negative electrode pillar assembly 204 provided on the upper cover plate of the battery case 200, and a safety valve assembly 202 provided between the positive electrode pillar assembly 201 and the negative electrode pillar assembly 204,
a microporous battery separator plate 2040 arranged in the battery case 200 for fixing the positive pole component 201 and the negative pole component 204, a microporous ceramic plate 2041 attached to the upper part of the microporous battery separator plate 2040,
the upper part of the microporous ceramic plate 2041 is fixed by a safety valve component,
and a pressure buffering gap is arranged between the microporous ceramic plate 2041 and the upper cover plate.
In the above, the positive post assembly 201 includes
A positive pole, the lower part of the positive pole is connected with the positive pole plate,
the positive post passes take micropore battery baffle, micropore potsherd, pressure buffering clearance to be connected with the positive post head to the upper end of upper cover plate, be provided with variable resistance element between positive post and the positive post head.
In the above, the positive post head is fixed by a positive nut.
In the above, the negative post assembly 201 comprises
A negative pole column 2042, the lower part of the negative pole column 2042 is connected with a negative pole plate,
the negative pole column 2042 penetrates through the battery separator with the micropores, the microporous ceramic sheet and the pressure buffer gap to be connected with the upper end of the upper cover plate and the negative pole column head 2043, and a variable resistance element 2045 is arranged between the negative pole column and the negative pole column head.
In the above, the negative pole stub is fixed by a negative pole nut 2044.
In the above, the variable resistive element 2044 includes a nano-silica ceramic substrate 600, an upper butting portion and a lower butting portion are respectively disposed on the upper portion and the lower portion of the nano-silica ceramic substrate 600, an upper electrode 602 and a lower electrode 604 are disposed on the surfaces of the upper butting portion and the lower butting portion, a plurality of first electrodes 601 and second electrodes 603 which are alternately disposed and isolated from each other are disposed between the upper electrode 602 and the lower electrode 604, the first electrodes 601 are connected to the upper electrode 602 and isolated from the lower electrode 604, and the second electrodes 603 are connected to the lower electrode 604 and isolated from the upper electrode 602.
The first electrode and the second electrode comprise copper bars, and graphene films are arranged on the outer sides of the copper bars.
The nano silicon dioxide ceramic matrix is in a micro-porous shape with a disordered structure, and metal cations formed by one or more of aluminum, copper and silver are added into the nano silicon dioxide ceramic matrix.
The variable resistance element is arranged in the single battery unit, and when the single battery unit is short-circuited or the temperature is too high, the resistance in the variable resistance element is increased, so that the blocking effect is achieved.
In the above, the safety valve assembly 202 includes
The porous pressing strip 2024 is used for fixing the microporous ceramic sheet, the porous pressing strip 2024 can be a metal pressing sheet or a ceramic pressing sheet, and air holes uniformly distributed are formed in the upper surface of the metal pressing sheet or the ceramic pressing sheet.
A ceramic substrate with a cavity disposed on the upper portion of the porous bead 2014,
the outer surface of the lower part (2023 part) of the ceramic substrate is provided with air holes which are uniformly arranged,
a seal ring 2022 for ceramic substrate fixation provided on the upper portion (portion designated by reference numeral 2020) of the ceramic substrate,
the upper part of the sealing ring 2022 is provided with a sealing cover 2021, the lower part of the sealing cover 2021 is butted with a cavity arranged in the ceramic substrate, and the sealing ring is provided with explosion-proof holes 203 which are uniformly distributed.
The single battery unit has explosion-proof performance, a microporous battery partition plate 2040 is arranged inside the single battery unit and used for fixing the positive pole component 201 and the negative pole component 204, a microporous ceramic plate 2041 attached to the upper part of the microporous battery partition plate 2040 is arranged on the upper part of the microporous battery partition plate, the upper part of the microporous ceramic plate 2041 is fixed by a safety valve component 202, and a pressure buffer gap is arranged between the microporous ceramic plate and the upper cover plate; the safety valve component comprises a porous pressing strip, the porous pressing strip is used for fixedly arranging a microporous ceramic wafer, a ceramic substrate with a cavity is arranged on the upper portion of the porous pressing strip, air holes are uniformly formed in the outer surface of the lower portion of the ceramic substrate, a sealing ring is arranged on the upper portion of the ceramic substrate and used for fixing the ceramic substrate, a sealing cover is arranged on the upper portion of the sealing ring, the lower portion of the sealing cover is in butt joint with the cavity formed in the ceramic substrate, and explosion-proof holes are uniformly distributed in the sealing ring.
Example 2
In order to facilitate the implementation of the invention, under the higher application, the plastic insulating base and the insulating combined upper cover can also be prepared by aluminum nitride ceramics, and the structure of the invention is as follows:
a power lithium battery module combination structure comprises
An insulating base 1 is provided with a plurality of insulating base plates,
a fixing groove 102 for a battery cell assembly provided on the insulative base 1,
at least one set of unit cells 2 for constituting a battery cell assembly,
the bottom of the battery cell assembly is fixed in the fixing groove 102,
an insulating combined upper cover 2 for fixing the upper part of the battery unit combination;
in the above, the insulating base 1 and the insulating combined upper cover are made of aluminum nitride ceramics. Because insulating base has adopted aluminium nitride ceramic preparation, has good insulating properties and high temperature resistant, has good heat conductivility, and the heat that the unit cell produced distributes through first heat dissipation channel and second heat dissipation channel on the one hand, and on the other hand transmits to aluminium nitride ceramic base through the copper shell body, transmits to the installation department by aluminium nitride ceramic base.
Generally, for example, in the use of an electric vehicle, the mounting part is made of a metal material and is transmitted to the whole vehicle body by the aluminum nitride ceramic, so that the vehicle body is not affected, and the aluminum nitride ceramic has good heat transfer performance and insulating performance and meets the design of insulating and isolating the mounting part.
In the above, the insulative combined upper cover 3 is provided with the conductive connector 4, and the conductive connector 4 is used for connecting the positive electrode tab and the negative electrode tab of the two unit battery cells 2 so as to combine the whole battery cells to form a series connection.
In the above, the unit cell 2 includes the battery case 200,
the battery case 200 comprises an aluminum inner shell, a graphene heat conduction layer arranged outside the aluminum inner shell, and a copper outer shell arranged outside the graphene heat conduction layer, wherein a plurality of first heat dissipation fins 206 are arranged on the left side and the right side of the copper outer shell respectively, a first heat dissipation channel 205 is formed between every two adjacent first heat dissipation fins, a plurality of second heat dissipation fins 208 are arranged on the front side and the rear side of the copper outer shell respectively, and a second heat dissipation channel 207 is formed between every two adjacent second heat dissipation fins.
The battery case of battery cell unit 2 adopts the aluminium interior casing, sets up the outside graphite alkene heat-conducting layer in the aluminium, sets up at the outside copper shell body of graphite alkene heat-conducting layer, because the coefficient of heat conductivity of graphite alkene is greater than the coefficient of heat conductivity of copper, therefore graphite alkene heat-conducting layer can give off the heat transfer to the copper shell body in the aluminium interior casing, first heat dissipation channel 205 and the second heat dissipation channel 207 that set up on by the copper shell body.
A positive electrode pillar assembly 201 and a negative electrode pillar assembly 204 provided on the upper cover plate of the battery case 200, and a safety valve assembly 202 provided between the positive electrode pillar assembly 201 and the negative electrode pillar assembly 204,
a microporous battery separator plate 2040 arranged in the battery case 200 for fixing the positive pole component 201 and the negative pole component 204, a microporous ceramic plate 2041 attached to the upper part of the microporous battery separator plate 2040,
the upper part of the microporous ceramic plate 2041 is fixed by a safety valve component,
and a pressure buffering gap is arranged between the microporous ceramic plate 2041 and the upper cover plate.
In the above, the positive post assembly 201 includes
A positive pole, the lower part of the positive pole is connected with the positive pole plate,
the positive post passes take micropore battery baffle, micropore potsherd, pressure buffering clearance to be connected with the positive post head to the upper end of upper cover plate, be provided with variable resistance element between positive post and the positive post head.
In the above, the positive post head is fixed by a positive nut.
In the above, the negative post assembly 201 comprises
A negative pole column 2042, the lower part of the negative pole column 2042 is connected with a negative pole plate,
the negative pole column 2042 penetrates through the battery separator with the micropores, the microporous ceramic sheet and the pressure buffer gap to be connected with the upper end of the upper cover plate and the negative pole column head 2043, and a variable resistance element 2045 is arranged between the negative pole column and the negative pole column head.
In the above, the negative pole stub is fixed by a negative pole nut 2044.
In the above, the variable resistive element 2044 includes a nano-silica ceramic substrate 600, an upper butting portion and a lower butting portion are respectively disposed on the upper portion and the lower portion of the nano-silica ceramic substrate 600, an upper electrode 602 and a lower electrode 604 are disposed on the surfaces of the upper butting portion and the lower butting portion, a plurality of first electrodes 601 and second electrodes 603 which are alternately disposed and isolated from each other are disposed between the upper electrode 602 and the lower electrode 604, the first electrodes 601 are connected to the upper electrode 602 and isolated from the lower electrode 604, and the second electrodes 603 are connected to the lower electrode 604 and isolated from the upper electrode 602.
The first electrode and the second electrode comprise copper bars, and graphene films are arranged on the outer sides of the copper bars.
The nano silicon dioxide ceramic matrix is in a micro-porous shape with a disordered structure, and metal cations formed by one or more of aluminum, copper and silver are added into the nano silicon dioxide ceramic matrix.
The variable resistance element is arranged in the single battery unit, and when the single battery unit is short-circuited or the temperature is too high, the resistance in the variable resistance element is increased, so that the blocking effect is achieved.
In the above, the safety valve assembly 202 includes
The porous pressing strip 2024 is used for fixing the microporous ceramic sheet, the porous pressing strip 2024 can be a metal pressing sheet or a ceramic pressing sheet, and air holes uniformly distributed are formed in the upper surface of the metal pressing sheet or the ceramic pressing sheet.
A ceramic substrate with a cavity disposed on the upper portion of the porous bead 2014,
the outer surface of the lower part (2023 part) of the ceramic substrate is provided with air holes which are uniformly arranged,
a seal ring 2022 for ceramic substrate fixation provided on the upper portion (portion designated by reference numeral 2020) of the ceramic substrate,
the upper part of the sealing ring 2022 is provided with a sealing cover 2021, the lower part of the sealing cover 2021 is butted with a cavity arranged in the ceramic substrate, and the sealing ring is provided with explosion-proof holes 203 which are uniformly distributed.
The single battery unit has explosion-proof performance, a microporous battery partition plate 2040 is arranged inside the single battery unit and used for fixing the positive pole component 201 and the negative pole component 204, a microporous ceramic plate 2041 attached to the upper part of the microporous battery partition plate 2040 is arranged on the upper part of the microporous battery partition plate, the upper part of the microporous ceramic plate 2041 is fixed by a safety valve component 202, and a pressure buffer gap is arranged between the microporous ceramic plate and the upper cover plate; the safety valve component comprises a porous pressing strip, the porous pressing strip is used for fixedly arranging a microporous ceramic wafer, a ceramic substrate with a cavity is arranged on the upper portion of the porous pressing strip, air holes are uniformly formed in the outer surface of the lower portion of the ceramic substrate, a sealing ring is arranged on the upper portion of the ceramic substrate and used for fixing the ceramic substrate, a sealing cover is arranged on the upper portion of the sealing ring, the lower portion of the sealing cover is in butt joint with the cavity formed in the ceramic substrate, and explosion-proof holes 203 which are uniformly distributed are formed in the sealing ring.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. A power lithium battery module combination structure is characterized by comprising
An insulating base is arranged on the base, and the insulating base is provided with a plurality of insulating grooves,
a fixing groove arranged on the insulating base and used for battery unit combination, a plurality of upper transmission radiating blocks formed by splicing single radiating units are arranged along the inner circumferential side of the fixing groove,
at least one group of single battery units for forming a battery unit combination,
the bottom of the battery unit combination is fixed in the fixing groove, and the battery unit combination is separated from the fixing groove by a plurality of spliced upper transmission radiating blocks on the inner circumferential side of the fixing groove,
an insulating combined upper cover for fixing the upper part of the battery unit combination;
the unit battery cell includes a battery case,
a positive pole column assembly and a negative pole column assembly arranged on the upper cover plate of the battery shell, and a safety valve assembly arranged between the positive pole column assembly and the negative pole column assembly,
a battery separator with micropores, which is arranged in the battery shell and used for fixing the anode post component and the cathode post component, a micropore ceramic plate which is pasted on the upper part of the battery separator with micropores is arranged on the upper part of the battery separator with micropores,
the upper part of the micropore ceramic plate is fixed by a safety valve component,
and a pressure buffering gap is arranged between the microporous ceramic plate and the upper cover plate.
2. The power lithium battery module assembly structure of claim 1, wherein the upper transfer radiating block is not connected to each other at two adjacent sides of the inner circumferential side of the fixing groove,
at least one lower transmission radiating block is arranged on the lower portion of the insulating base and is matched with the upper transmission radiating block, the lower transmission radiating block is in butt joint with the upper transmission radiating block, and therefore heat absorbed by the upper transmission radiating block is transmitted to the fixed end used for fixing the insulating base through the lower transmission radiating block.
3. The modular combination structure of a lithium battery according to claim 1, wherein the insulating combination cover is provided with a conductive connector for connecting the positive and negative electrode tabs of two unit cells to combine the entire cells into a series connection.
4. The modular composite structure of claim 1, wherein the insulating base and the insulating composite top cover are made of plastic.
5. The modular composite structure of claim 1, wherein the positive pillar assembly comprises
A positive pole, the lower part of the positive pole is connected with the positive pole plate,
the positive post passes take micropore battery baffle, micropore potsherd, pressure buffering clearance to be connected with the positive post head to the upper end of upper cover plate, be provided with variable resistance element between positive post and the positive post head.
6. The power lithium battery module assembly of claim 5, wherein the positive stud is secured by a positive nut.
7. The modular composite structure of claim 1, wherein the negative pillar assembly comprises
A negative pole column, the lower part of which is connected with the negative pole plate,
the negative pole post passes the battery separator with the micropores, the micropore ceramic plate and the pressure buffer gap to be connected with the upper end of the upper cover plate and the negative pole post head, and a variable resistance element is arranged between the negative pole post and the negative pole post head.
8. The modular composite structure of claim 5, wherein the negative posts are secured by negative nuts.
9. The modular composite structure of claim 5, wherein the safety valve assembly comprises
A porous press strip used for fixing the microporous ceramic plate,
a ceramic substrate with a cavity arranged at the upper part of the porous pressing strip,
the outer surface of the lower part of the ceramic substrate is provided with air holes which are uniformly arranged,
a sealing ring arranged on the upper part of the ceramic substrate for fixing the ceramic substrate,
the upper part of the sealing ring is provided with a sealing cover, the lower part of the sealing cover is butted with a cavity arranged in the ceramic substrate, and the sealing ring is provided with explosion-proof holes which are uniformly distributed.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011086437.3A CN112133861B (en) | 2020-10-12 | 2020-10-12 | Power lithium battery module integrated configuration |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011086437.3A CN112133861B (en) | 2020-10-12 | 2020-10-12 | Power lithium battery module integrated configuration |
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| CN112133861B true CN112133861B (en) | 2021-05-11 |
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| CN105322248A (en) * | 2014-05-29 | 2016-02-10 | 株式会社Lg化学 | Battery module, battery pack, and device including battery pack |
| CN105552475A (en) * | 2016-03-03 | 2016-05-04 | 合肥国轩高科动力能源有限公司 | Naturally radiated type battery module |
| CN206322821U (en) * | 2016-12-22 | 2017-07-11 | 上海思致汽车工程技术有限公司 | A kind of electrokinetic cell module with high heat dispersion |
| CN110854319A (en) * | 2018-08-21 | 2020-02-28 | Sk新技术株式会社 | Battery module and method for manufacturing same |
| DE102018219461A1 (en) * | 2018-11-14 | 2020-05-14 | Audi Ag | Battery module arrangement for a motor vehicle and motor vehicle |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001043892A (en) * | 1999-07-29 | 2001-02-16 | Kyocera Corp | Lithium battery |
| US8574752B2 (en) * | 2009-10-29 | 2013-11-05 | Samsung Sdi Co., Ltd. | Electrode assembly and rechargeable battery using the same |
| DE102014110304A1 (en) * | 2014-07-22 | 2016-01-28 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Underbody unit for a motor vehicle |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105322248A (en) * | 2014-05-29 | 2016-02-10 | 株式会社Lg化学 | Battery module, battery pack, and device including battery pack |
| CN105552475A (en) * | 2016-03-03 | 2016-05-04 | 合肥国轩高科动力能源有限公司 | Naturally radiated type battery module |
| CN206322821U (en) * | 2016-12-22 | 2017-07-11 | 上海思致汽车工程技术有限公司 | A kind of electrokinetic cell module with high heat dispersion |
| CN110854319A (en) * | 2018-08-21 | 2020-02-28 | Sk新技术株式会社 | Battery module and method for manufacturing same |
| DE102018219461A1 (en) * | 2018-11-14 | 2020-05-14 | Audi Ag | Battery module arrangement for a motor vehicle and motor vehicle |
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| CN112133861A (en) | 2020-12-25 |
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