CN114447506B - Modularized assembling and bearing type lithium battery structure - Google Patents
Modularized assembling and bearing type lithium battery structure Download PDFInfo
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- CN114447506B CN114447506B CN202210103745.5A CN202210103745A CN114447506B CN 114447506 B CN114447506 B CN 114447506B CN 202210103745 A CN202210103745 A CN 202210103745A CN 114447506 B CN114447506 B CN 114447506B
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- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 22
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 22
- 238000004804 winding Methods 0.000 claims abstract description 20
- 229910000838 Al alloy Inorganic materials 0.000 claims abstract description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical group [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 42
- 229910052782 aluminium Inorganic materials 0.000 claims description 42
- 230000017525 heat dissipation Effects 0.000 claims description 16
- 238000003466 welding Methods 0.000 claims description 13
- 229920002799 BoPET Polymers 0.000 claims description 10
- 239000005041 Mylar™ Substances 0.000 claims description 10
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 238000001746 injection moulding Methods 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 12
- 230000000694 effects Effects 0.000 abstract description 5
- 238000009413 insulation Methods 0.000 description 12
- 238000000034 method Methods 0.000 description 10
- 239000004411 aluminium Substances 0.000 description 7
- 230000006978 adaptation Effects 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 238000000605 extraction Methods 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
Classifications
-
- 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
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
-
- 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
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
-
- 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
- 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
-
- 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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Landscapes
- 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)
- Battery Mounting, Suspending (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The invention discloses a modularized assembled and bearing type lithium battery structure which comprises a shell, a top cover and battery cell units, wherein the shell is a rectangular hollow aluminum alloy tube, two ends of the shell are provided with openings and are respectively and correspondingly provided with the top cover, any top cover is correspondingly provided with a pair of positive and negative pole columns, at least 1 battery cell unit is correspondingly arranged in the shell, and two ends of each battery cell unit are respectively and correspondingly connected with the positive and negative pole columns of the two top covers. The invention can simplify the structure of the current module and the battery pack, improve the strength and increase the volume density and the mass density; the requirements of the battery cell units with different lengths can be met; the pollution risk of the battery cell is reduced and the production efficiency is increased; the winding battery core can be well protected; the risk that laser strikes the cell unit does not exist; the electric core unit can be dried before being put into the shell; fast charge and high power discharge can be realized; improve the heat conduction effect of the module, and the product price can be obviously reduced.
Description
Technical Field
The invention relates to the field of automobile power lithium battery structures, in particular to a modularized assembled and bearing type lithium battery structure.
Background
The automobile power lithium battery cell structure is divided into a cylindrical cell, a square shell cell and a soft package cell according to different processing technologies. But each has its own disadvantages during application: the number of cylindrical single bodies of the cylindrical battery system is large, so that the complexity of the battery system is greatly increased, and the cost of the cylindrical battery at the system level is higher compared with other two types of batteries regardless of a mechanism or a management system; the square shell battery cell can be customized according to the size of the product, so thousands of models exist in the market, and the process is difficult to unify because of too many models; the soft package battery core adopts a lamination process, the processing efficiency is low, the soft package processing process is complex, the model is too many, and the process is difficult to unify. The current square shell battery cell and soft package battery cell can be baked only after being put into the shell, and the baking efficiency is low and the baking effect is poor.
These three cells also have 3 common disadvantages:
1. in the process of integration with an automobile, because the battery cell has no bearing capacity, a high-strength battery pack or a module structure is required to be used as a package and support of the battery, so that the weight density and the volume density of the battery pack are reduced;
2. in the processing process of the bare cell, laser welding is used to form battery pollution;
3. the battery requires an additional cooling circuit to regulate the temperature of the battery cells during operation, occupies a large space, and causes a complicated mechanism.
Disclosure of Invention
The invention mainly solves the technical problem of providing a modularized assembled and bearing type lithium battery structure, which can greatly simplify the structures of the current module and the battery pack, improve the strength and increase the volume density and the mass density; by adopting the standardized cell unit size, the large-scale cell unit production can be realized through different numbers of configurations, and the requirements of the cell units with different lengths can be adapted only by changing the size of the shell, without complicated model changing and production line adaptation; the connection adopts a plugging mode, so that the pollution risk of the battery cell is greatly reduced and the production efficiency is increased; the winding battery core is provided with the frames around, and the two sides of the winding battery core are wrapped by the mylar sheets, so that the winding battery core can be well protected, and the risk of breakage in transportation is reduced; in the welding process of the top cover and the shell, the risk that laser strikes the battery cell unit is avoided; the electric core unit can be dried before being put into the shell, so that the drying process is shortened, the energy consumption is reduced, and the water content is less; the double electrode column extraction technology is adopted, so that more reliable high-capacity current passing capacity is obtained, the internal resistance of the battery is further reduced, and quick charge and high-power discharge can be realized; the shell can integrate the electric insulation heat dissipation pipeline, greatly improves the heat conduction effect of the module heat management system, and meanwhile, as the processing mode of the shell adopts aluminum profile extrusion, the product price can be obviously reduced, and the electric insulation heat dissipation pipeline plays a supporting role at the same time, so that the whole pack structure is more compact, and the volume and the mass energy density are increased.
In order to solve the technical problems, the invention adopts a technical scheme that: the utility model provides a modularization equipment and bear formula lithium cell structure, including casing, top cap and electric core unit, the casing is rectangular cavity aluminum alloy pipe, the both ends of casing set up to the opening and correspond respectively and be provided with the top cap, arbitrary correspond on the top cap and be provided with a pair of positive negative pole post, electric core unit is provided with 1 and corresponds and set up in the casing at least, electric core unit's both ends correspond with the positive negative pole post of two top caps respectively and are connected.
In a preferred embodiment of the present invention, the top cover is an aluminum end cover and includes a first aluminum end cover and a second aluminum end cover, the outer side surface of the first aluminum end cover is provided with a first positive pole and a first negative pole, the inner side surfaces of the first aluminum end cover are correspondingly connected with a first positive pole jack and a first negative pole jack through a first positioning protection cover, the outer side surface of the second aluminum end cover is provided with a second positive pole and a second negative pole, the inner side surfaces of the second aluminum end cover are correspondingly connected with a first positive pole plug and a first negative pole plug through a second positioning protection cover, the same sides of the positive pole jack and the positive pole plug are flush, and the same sides of the negative pole jack and the negative pole plug are flush.
In a preferred embodiment of the present invention, a relief valve is disposed on the first aluminum end cap between the first positive electrode jack and the first negative electrode jack, and a liquid injection hole is disposed on the second aluminum end cap between the first positive electrode plug and the first negative electrode plug.
In a preferred embodiment of the invention, the cell unit comprises a connector, a coiled cell and mylar sheet.
In a preferred embodiment of the invention, the connector is an injection molding composite structure of outer plastic and inner aluminum or copper, and comprises a first connector and a second connector, wherein the first connector and the second connector are oppositely spliced in a C-shaped symmetrical structure, the connecting ends of the first connector and the second connector are fixed by ultrasonic welding, the winding battery core is correspondingly arranged between the first connector and the second connector, the inner side surfaces of the first connector and the second connector are respectively provided with an exposed conductive layer, the conductive layers are respectively welded with lugs of the winding battery core, and the surfaces of the first connector and the second connector are packaged by mylar sheet ultrasonic welding.
In a preferred embodiment of the present invention, two ends of the first connector are respectively and correspondingly connected with a second positive plug and a second positive jack, two ends of the second connector are respectively and correspondingly connected with a second negative plug and a second negative jack, the second positive plug and the second negative plug of the first connector are respectively and correspondingly inserted and fixed with the first positive jack and the first negative jack of the first aluminum end cover, and the second positive jack and the second negative jack of the first connector are respectively and correspondingly inserted and fixed with the first positive plug and the first negative plug of the second aluminum end cover.
In a preferred embodiment of the present invention, the connector is provided with third positioning protection covers at two sides of the second positive plug and the second negative plug, and fourth positioning protection covers at two sides of the second positive jack and the second negative jack, wherein the third positioning protection covers are fixedly inserted with the first positioning protection covers, and the fourth positioning protection covers are fixedly inserted with the second positioning protection covers.
In a preferred embodiment of the present invention, a plurality of the battery cells are provided, and at this time, the plurality of battery cells are fixed with the second positive electrode jack and the second negative electrode jack by the second positive electrode plug and the second negative electrode plug in a corresponding head-to-tail connection manner, and the third positioning protection cover and the fourth positioning protection cover are fixed in a plug-in manner.
In a preferred embodiment of the invention, one side of the shell is provided with a ladder structure and is transversely provided with a radiating hole in a penetrating way, an electric insulation radiating pipeline is inserted in the radiating hole of the shell, and a plurality of shells are stacked and then connected with a radiating connector through the electric insulation radiating pipeline to form a high-efficiency heat exchange system which is in tight contact with a battery.
The beneficial effects of the invention are as follows: the modularized assembled and bearing type lithium battery structure provided by the invention has the following advantages:
a. The bearing type shell is adopted, so that the structures of the current module and the battery pack can be greatly simplified, the strength is improved, and the volume density and the mass density are increased;
b. By adopting the standardized cell unit size, the large-scale cell unit production can be realized through different numbers of configurations, and the requirements of the cell units with different lengths can be adapted only by changing the size of the shell, without complicated model changing and production line adaptation;
c. the connection between the battery core units and the top cover adopts an inserting mode, so that complicated laser welding equipment is not needed, the pollution risk of the battery core is greatly reduced, and the production efficiency is increased;
d. The winding battery core is provided with the frames around, and the two sides of the winding battery core are wrapped by the mylar sheets, so that the winding battery core can be well protected, and the risk of breakage in transportation is reduced;
e. the electric core unit can be dried before being put into the shell, so that the drying process is shortened, the energy consumption is reduced, and the water content is less;
f. due to the protection of the frame, the risk that laser strikes the battery cell unit is avoided in the welding process of the top cover and the shell;
g. The double electrode column extraction technology is adopted, so that more reliable high-capacity current passing capacity is obtained, the internal resistance of the battery is further reduced, and quick charge and high-power discharge can be realized;
h. The shell can integrate the electric insulation heat dissipation pipeline, greatly improves the heat conduction effect of the module heat management system, and meanwhile, as the processing mode of the shell adopts aluminum profile extrusion, the product price can be obviously reduced, and the electric insulation heat dissipation pipeline plays a supporting role at the same time, so that the whole pack structure is more compact, and the volume and the mass energy density are increased.
Drawings
For a clearer description of the technical solutions of the embodiments of the present invention, the drawings that are needed in the description of the embodiments will be briefly introduced below, it being obvious that the drawings in the description below are only some embodiments of the present invention, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art, wherein:
FIG. 1 is a perspective view of a battery cell unit of a preferred embodiment of a modular assembled and load-bearing lithium battery structure of the present invention;
FIG. 2 is a front view of FIG. 1;
FIG. 3 is a top view of FIG. 1;
FIG. 4 is a cross-sectional view of FIG. 2;
FIG. 5 is a perspective view of a first connector or a second connector of a preferred embodiment of a modular assembled and load-bearing lithium battery structure of the present invention;
FIG. 6 is a schematic view of a housing of a preferred embodiment of a modular assembled and load-bearing lithium battery structure according to the present invention;
FIG. 7 is a perspective view of a first aluminum end cap of a preferred embodiment of a modular assembled and load-bearing lithium battery cell structure of the present invention;
FIG. 8 is a perspective view of a second aluminum end cap of a preferred embodiment of a modular assembled and load-bearing lithium battery cell structure of the present invention;
FIG. 9 is a perspective view of the application of a hidden housing cell unit of a preferred embodiment of a modular assembled and load-bearing lithium battery structure of the present invention;
FIG. 10 is a top view of FIG. 9;
Fig. 11 is a partial enlarged view of a portion a of fig. 10;
fig. 12 is a partial enlarged view of a portion B of fig. 10;
fig. 13 is a partial enlarged view of a portion C of fig. 10;
FIG. 14 is a schematic view of a housing of a preferred embodiment of a modular assembled and load-bearing lithium battery structure according to the present invention;
Fig. 15 is a side view of fig. 14;
FIG. 16 is a modular perspective view of a preferred embodiment of a modular assembled and load-bearing lithium battery structure according to the present invention;
Fig. 17 is a front view of fig. 16.
Detailed Description
The following description of the technical solutions in the embodiments of the present invention will be clear and complete, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1 in combination with fig. 2 to 17, an embodiment of the present invention includes:
A modularized assembled and bearing type lithium battery structure comprises a shell 1, a top cover and an electric core unit.
As shown in fig. 6, the casing 1 is a rectangular hollow aluminum alloy tube, and the processing mode of extruding an aluminum profile is adopted, so that the casing 1 is lengthened and thickened as required, the length of the casing 1 is close to the width of the battery pack, and the casing 1 becomes a part of a module or a battery pack bearing structure, thereby effectively improving mechanical strength, reducing complexity of a system, and improving volume energy density and quality energy density.
As shown in fig. 7 and 8, the two ends of the housing 1 are provided with openings and are respectively provided with a top cover correspondingly, and the top covers adopt standard structural design and can adapt to housings with different lengths.
Any one of the top covers is correspondingly provided with a pair of positive and negative poles, at least 1 cell unit is arranged in the shell 1 correspondingly, two ends of the cell unit are correspondingly connected with the positive and negative poles of the two top covers respectively, and electrical connection between the positive and negative poles and the cell unit is ensured.
The top cap is the aluminium end cover and includes first aluminium end cover 2 and second aluminium end cover 3, the lateral surface of first aluminium end cover 2 is provided with first anodal post 4 and first negative pole post 5, first anodal post 4 and first negative pole post 5 are provided with first anodal jack 7 and first negative pole jack 8 through corresponding the connection of first location visor 6 respectively at the medial surface of first aluminium end cover 2, the lateral surface of second aluminium end cover 3 is provided with second anodal post 9 and second negative pole post 10, second anodal post 9 and second negative pole post 10 are provided with first anodal plug 12 and first negative pole plug 13 through corresponding the connection of second location visor 11 respectively at the medial surface of second aluminium end cover 3, first anodal jack 7 and first anodal plug 12 homonymy flushes the correspondence, first negative pole jack 8 and first negative pole plug 13 homonymy flushes the correspondence. The first positive pole 4, the first negative pole 5, the second positive pole 9 and the second negative pole 10 are convenient for external electric connection, the first positioning protection cover 6 and the second positioning protection cover 11 are used for playing the roles of positioning and protecting, and the first positive pole jack 7, the first negative pole jack 8, the first positive pole plug 12 and the first negative pole plug 13 are used for being fixedly connected with electric plug connection at two ends of the battery cell unit.
The first aluminum end cover 2 between the first positive electrode jack 7 and the first negative electrode jack 8 is provided with a relief valve 14, and the second aluminum end cover 3 between the first positive electrode plug 12 and the first negative electrode plug 13 is provided with a liquid injection hole 15 for facilitating the adjustment and use of the whole module.
As shown in connection with fig. 1-5, the cell unit includes a connector, a coiled cell 16, and mylar sheet 17.
The connector is an injection molding composite structure of outer plastic and inner aluminum or copper, and comprises a first connector 18 and a second connector 19, wherein the outer part has an insulation protection function, and the inner part has a conductive function.
The first connector 18 and the second connector 19 are oppositely spliced and arranged in a C-shaped symmetrical structure, the connecting ends of the first connector 18 and the second connector 19 are welded and fixed by ultrasonic waves, and the processing is pollution-free, quick, energy-saving, high in fusion strength, good in conductivity, spark-free and close to cold processing.
The winding battery core 16 is correspondingly arranged between the first connector 18 and the second connector 19, the surfaces of the first connector 18 and the second connector 19 are sealed by ultrasonic welding of the mylar sheet 17, and the traditional mylar structure is replaced by the fully-enclosed structure, so that the fully-enclosed protection of the winding battery core 16 is realized, and the damage prevention and pollution prevention capabilities of the winding battery core 16 are greatly improved.
The inner side surfaces of the first connector 18 and the second connector 19 are respectively provided with a bare conductive layer 20, and the conductive layers 20 are respectively welded with the tabs 21 of the winding battery core 16, so that the dislocation of the tabs 21 is no longer a problem.
The two ends of the first connector 18 are respectively and correspondingly connected with a second positive electrode plug 22 and a second positive electrode jack 23, the two ends of the second connector 19 are respectively and correspondingly connected with a second negative electrode plug 24 and a second negative electrode jack 25, and a positive electrode and a negative electrode are respectively led out from the two sides of the winding battery core 16, so that more reliable high-capacity current passing capacity is obtained.
Referring to fig. 9-13, the second positive plug 22 and the second negative plug 24 of the first connector 18 and the second connector 19 are correspondingly inserted and fixed with the first positive jack 7 and the first negative jack 8 of the first aluminum end cover 2, and the second positive jack 23 and the second negative jack 25 of the first connector 18 and the second connector 19 are correspondingly inserted and fixed with the first positive plug 12 and the first negative plug 13 of the second aluminum end cover 3, so that the conventional laser welding is abandoned, the pollution of welding particles is greatly reduced, the manufacturing difficulty is reduced, and the manufacturing efficiency is improved.
The connector is provided with third positioning protection covers 26 at two sides of the second positive electrode plug 22 and the second negative electrode plug 24, fourth positioning protection covers 27 are arranged at two sides of the second positive electrode jack 23 and the second negative electrode jack 25, the third positioning protection covers 26 are fixedly connected with the first positioning protection covers 6 in an inserting mode, and the fourth positioning protection covers 27 and the second positioning protection covers 11 are fixedly connected in an inserting mode, so that effective protection of an inserting face is achieved.
The battery cell units are provided with a plurality of battery cell units, at this time, the battery cell units are correspondingly inserted and fixed with the second positive electrode jack 23 and the second negative electrode jack 25 end to end through the second positive electrode plug 22 and the second negative electrode plug 24, and the third positioning protection cover 26 and the fourth positioning protection cover 27 are inserted and fixed, so that end-to-end connection and stable positioning insertion protection are realized.
Referring to fig. 14-17, one side of the housing 1 is provided with a stepped structure and is provided with a heat dissipation hole 28 transversely penetrating through the stepped structure, an electric insulation heat dissipation pipeline 29 is inserted into the heat dissipation hole 28 of the housing 1, a plurality of housings 1 are stacked and then connected with a heat dissipation connector 30 through an integrated electric insulation heat dissipation pipeline 29 to form a high-efficiency heat exchange system in tight contact with a battery, and the electric insulation heat dissipation pipeline 29 plays a supporting role at the same time, so that the whole pack structure is more compact.
In summary, the modular assembled and bearing lithium battery structure according to the present invention has the following advantages:
a. The bearing type shell is adopted, so that the structures of the current module and the battery pack can be greatly simplified, the strength is improved, and the volume density and the mass density are increased;
b. By adopting the standardized cell unit size, the large-scale cell unit production can be realized through different numbers of configurations, and the requirements of the cell units with different lengths can be adapted only by changing the size of the shell, without complicated model changing and production line adaptation;
c. the connection between the battery core units and the top cover adopts an inserting mode, so that complicated laser welding equipment is not needed, the pollution risk of the battery core is greatly reduced, and the production efficiency is increased;
d. The winding battery core is provided with the frames around, and the two sides of the winding battery core are wrapped by the mylar sheets, so that the winding battery core can be well protected, and the risk of breakage in transportation is reduced;
e. the electric core unit can be dried before being put into the shell, so that the drying process is shortened, the energy consumption is reduced, and the water content is less;
f. due to the protection of the frame, the risk that laser strikes the battery cell unit is avoided in the welding process of the top cover and the shell;
g. The double electrode column extraction technology is adopted, so that more reliable high-capacity current passing capacity is obtained, the internal resistance of the battery is further reduced, and quick charge and high-power discharge can be realized;
h. The shell can integrate the electric insulation heat dissipation pipeline, greatly improves the heat conduction effect of the module heat management system, and meanwhile, as the processing mode of the shell adopts aluminum profile extrusion, the product price can be obviously reduced, and the electric insulation heat dissipation pipeline plays a supporting role at the same time, so that the whole pack structure is more compact, and the volume and the mass energy density are increased.
The foregoing description is only illustrative of the present invention and is not intended to limit the scope of the invention, and all equivalent structures or equivalent processes or direct or indirect application in other related arts are included in the scope of the present invention.
Claims (3)
1. The modularized assembling and bearing type lithium battery structure is characterized by comprising a shell, a top cover and battery cell units, wherein the shell is a rectangular hollow aluminum alloy tube, two ends of the shell are provided with openings and are respectively and correspondingly provided with the top cover, any top cover is correspondingly provided with a pair of positive and negative pole columns, at least 1 battery cell unit is correspondingly arranged in the shell, and two ends of each battery cell unit are respectively and correspondingly connected with the positive and negative pole columns of the two top covers;
The top cover is an aluminum end cover and comprises a first aluminum end cover and a second aluminum end cover, the outer side face of the first aluminum end cover is provided with a first positive pole and a first negative pole, the inner side faces of the first aluminum end cover are respectively and correspondingly connected with a first positive pole jack and a first negative pole jack through first positioning protection covers, the outer side face of the second aluminum end cover is provided with a second positive pole and a second negative pole, the inner side faces of the second aluminum end cover are respectively and correspondingly connected with a first positive pole plug and a first negative pole plug through second positioning protection covers, the same sides of the positive pole jack and the positive pole plug are flush and correspond, and the same sides of the negative pole jack and the negative pole plug are flush and correspond;
The battery cell unit comprises a connector, a winding battery cell and a mylar sheet;
The connector is of an injection molding composite structure of outer plastic and inner aluminum or copper and comprises a first connector and a second connector, the first connector and the second connector are oppositely spliced and arranged in a C-shaped symmetrical structure, the connecting ends of the first connector and the second connector are fixed by ultrasonic welding, the winding battery core is correspondingly arranged between the first connector and the second connector, the inner side surfaces of the first connector and the second connector are respectively provided with an exposed conductive layer, the conductive layers are respectively welded with lugs of the winding battery core, and the surfaces of the first connector and the second connector are packaged by mylar ultrasonic welding;
The two ends of the first connector are respectively and correspondingly connected with a second positive plug and a second positive jack, the two ends of the second connector are respectively and correspondingly connected with a second negative plug and a second negative jack, the second positive plug and the second negative plug of the first connector are correspondingly inserted and fixed with the first positive jack and the first negative jack of the first aluminum end cover, and the second positive jack and the second negative jack of the first connector are correspondingly inserted and fixed with the first positive plug and the first negative plug of the second aluminum end cover;
The connector is characterized in that third positioning protection covers are arranged on two sides of the second positive electrode plug and the second negative electrode plug, fourth positioning protection covers are arranged on two sides of the second positive electrode jack and the second negative electrode jack, the third positioning protection covers are fixedly connected with the first positioning protection covers in an inserting mode, and the fourth positioning protection covers are fixedly connected with the second positioning protection covers in an inserting mode;
The heat dissipation device comprises a shell, a heat dissipation connector, a plurality of heat dissipation pipes, a plurality of heat dissipation connectors, a heat exchange system and a heat exchange system.
2. The modular assembled and load-bearing lithium battery structure of claim 1, wherein a bleed valve is provided on a first aluminum end cap between the first positive and negative jacks and a liquid injection hole is provided on a second aluminum end cap between the first positive and negative plugs.
3. The modular assembled and supported lithium battery structure of claim 1, wherein a plurality of the battery cells are provided, at this time, the plurality of battery cells are fixed by plugging the second positive plug and the second negative plug with the second positive jack and the second negative jack, and the third positioning protection cover and the fourth positioning protection cover are fixed by plugging.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201289880Y (en) * | 2008-10-21 | 2009-08-12 | 宇龙计算机通信科技(深圳)有限公司 | Battery unit and array battery |
| CN111816800A (en) * | 2020-07-17 | 2020-10-23 | 河南平煤国能锂电有限公司 | Single battery with internal battery cores connected in series or in parallel in sequence |
| CN212517354U (en) * | 2020-08-15 | 2021-02-09 | 江西省水投江河信息技术有限公司 | Assembled battery |
| CN112820982A (en) * | 2021-02-19 | 2021-05-18 | 湖北亿纬动力有限公司 | Battery monomer and battery module |
| CN112993473A (en) * | 2019-11-29 | 2021-06-18 | 比亚迪股份有限公司 | Battery, battery module, battery pack and electric vehicle |
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2022
- 2022-01-28 CN CN202210103745.5A patent/CN114447506B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201289880Y (en) * | 2008-10-21 | 2009-08-12 | 宇龙计算机通信科技(深圳)有限公司 | Battery unit and array battery |
| CN112993473A (en) * | 2019-11-29 | 2021-06-18 | 比亚迪股份有限公司 | Battery, battery module, battery pack and electric vehicle |
| CN111816800A (en) * | 2020-07-17 | 2020-10-23 | 河南平煤国能锂电有限公司 | Single battery with internal battery cores connected in series or in parallel in sequence |
| CN212517354U (en) * | 2020-08-15 | 2021-02-09 | 江西省水投江河信息技术有限公司 | Assembled battery |
| CN112820982A (en) * | 2021-02-19 | 2021-05-18 | 湖北亿纬动力有限公司 | Battery monomer and battery module |
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| CN114447506A (en) | 2022-05-06 |
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