CN115621630A - High-safety thermal coupling extremely-simple cylindrical steel shell structure - Google Patents
High-safety thermal coupling extremely-simple cylindrical steel shell structure Download PDFInfo
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- CN115621630A CN115621630A CN202211363630.6A CN202211363630A CN115621630A CN 115621630 A CN115621630 A CN 115621630A CN 202211363630 A CN202211363630 A CN 202211363630A CN 115621630 A CN115621630 A CN 115621630A
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- casing
- plastic
- shell
- cylindrical steel
- negative pole
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 15
- 239000010959 steel Substances 0.000 title claims abstract description 15
- 238000010168 coupling process Methods 0.000 title claims abstract description 8
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 8
- 230000008878 coupling Effects 0.000 title claims abstract description 6
- 239000000463 material Substances 0.000 claims abstract description 25
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 claims abstract description 5
- 229910001416 lithium ion Inorganic materials 0.000 claims abstract description 5
- 238000000034 method Methods 0.000 claims description 9
- 230000008569 process Effects 0.000 claims description 6
- 238000003466 welding Methods 0.000 claims description 6
- 101100008046 Caenorhabditis elegans cut-2 gene Proteins 0.000 claims description 3
- 230000009471 action Effects 0.000 claims description 3
- 238000005452 bending Methods 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 claims description 3
- 230000005611 electricity Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 230000002950 deficient Effects 0.000 description 3
- 239000003792 electrolyte Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000007599 discharging Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000011258 core-shell material Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000009916 joint effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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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
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/102—Primary casings; Jackets or wrappings characterised by their shape or physical structure
- H01M50/107—Primary casings; Jackets or wrappings characterised by their shape or physical structure having curved cross-section, e.g. round or elliptic
-
- 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
- H01M50/10—Primary casings; Jackets or wrappings
- H01M50/172—Arrangements of electric connectors penetrating the casing
- H01M50/174—Arrangements of electric connectors penetrating the casing adapted for the shape of the cells
- H01M50/179—Arrangements of electric connectors penetrating the casing adapted for the shape of the cells for cells having curved cross-section, e.g. round or elliptic
-
- 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)
- Secondary Cells (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The invention discloses a high-safety heat-coupling extremely-simple cylindrical steel shell structure, and relates to the technical field of power batteries. This high security thermal coupling utmost point simple cylinder steel casing structure, the little internal resistance of utmost point post is through the structure that overflows by force can reduce energy loss, security performance and stability can be higher, has solved high capacity low internal resistance electricity core demand, has improved power lithium ion battery duration, and improve the whole security performance of battery, has promoted electric automobile security performance and stability can to and the continuation of the journey mileage. The pole structure with safety and simplicity can reduce the material cost and the assembly and processing cost.
Description
Technical Field
The invention relates to the technical field of power batteries, in particular to a high-safety heat coupling simple cylindrical steel shell structure.
Background
The power lithium battery is widely applied to new energy automobiles, energy storage equipment and other products. The power lithium ion battery is formed by combining a plurality of battery cores in series and parallel. With the popularization and development of new energy vehicles in China, higher requirements on endurance, safety and cost of power batteries are put forward. Large diameter cells have greater capacity but require higher cell casing strength. The high-capacity battery cell means that the energy is large when discharging, the current density at the joint of the pole and the electrode is larger, more resistance heat energy is generated, the temperature of the battery cell rises, the endurance is reduced, the discharging performance of the battery cell is influenced, and great potential safety hazards exist. The key point that the price of the new energy automobile is far higher than that of the fuel oil automobile is that the cost of the structural part of the power battery is overhigh.
Therefore, a great cylindrical high-capacity steel shell pole simple safety structure is urgently needed, and is applied to a battery core of a power battery to improve the capacity of the battery core, reduce internal resistance, improve safety and simultaneously consider low cost.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides a high-safety heat-coupling simple cylindrical steel shell structure, and solves the problems.
In order to achieve the purpose, the invention is realized by the following technical scheme: the utility model provides a high security heat coupling utmost point simple cylinder steel-clad shell structure, includes the last plastic that sets gradually from the top down, lower plastic, anodal post, casing, switching piece, insulating piece, negative pole apron and sealed nail, the round hole of diameter 16.8mm is seted up to the bottom of casing is used for running through the anodal post, the anodal post runs through plastic, casing and lower plastic in proper order and assembles through hot riveting technology and play the erection joint effect promptly and have played sealed effect, and anodal structure can realize anodal functional requirement under new hot riveting technology, and the few functional reliability of spare part is higher to very big reduction defective rate and manufacturing cost, the switching piece passes through spot welding on the negative pole apron, the switching piece links to each other with the negative pole, and folds at the casing inner chamber through the mode of bending, the negative pole apron passes through laser welding with the casing and seals, the insulating piece sets up when being used for avoiding injecting electrolyte impact electrode between casing and the negative pole apron and causes the safety hidden danger, also keeps apart anodal simultaneously and is connected with the negative pole and plays insulating effect.
As a further scheme of the invention: go up the material of plastic and lower plastic and be the PP plastic, the positive post material is AL1060H14, the material of casing, negative pole apron and sealed nail is SPCC preplating board, the adaptor piece material is CuT2, the insulating piece material is PPHJ400.
As a further scheme of the invention: an electrode diaphragm in the battery core is directly connected with the positive pole in a shell-entering manner, and the potential safety hazard caused by heating of the internal resistance of the pole lug under high current is avoided from the root of the high-overcurrent low-internal-resistance pole connection manner.
As a further scheme of the invention: the shell is formed by a stretching process, and the stretching process comprises the following steps:
the method comprises the following steps that firstly, stretching is carried out through a multi-station drawing die, and feeding is carried out through a high-speed feeding mechanical arm;
step two, when the left mechanical arm and the right mechanical arm clamp the shell, the shell is lifted to be separated from the support of 17 under the action of the stressed left mechanical arm and the stressed right mechanical arm and the angle of a guide rod hole in the fixed seat; and the moving direction of the z axis of the manipulator is reduced through the guide rod in the guide rod hole on the fixed seat.
As a further scheme of the invention: in the first step, the shell is subjected to drawing in 3 steps and extruding in 3 steps.
As a further scheme of the invention: the multi-station drawing die comprises a guide rod, a fixed seat, a mechanical arm, a clamping block, a lower die positioning plate and a material ejecting block, wherein the mechanical arm moves left and right and back and forth; the fixed seat is connected with the clamping block through a guide rod, an equal-height sleeve and a spring.
Compared with the prior art, the invention has the following beneficial effects:
1. according to the invention, through the structure of strong overcurrent in the micro internal resistance of the pole, the energy loss can be reduced, the safety performance and the stability are higher, the requirement of a high-capacity low-internal resistance battery cell is met, the cruising ability of the power lithium ion battery is improved, the overall safety performance of the battery is improved, and the safety performance, the stability performance and the cruising mileage of the electric automobile are improved. The pole structure with safety and simplicity can reduce the material cost and the assembly and processing cost.
2. According to the invention, the moving direction of the z axis of the manipulator is reduced through the guide rods in the guide rod holes on the fixing seat, the dragging bottom of the shell and the lower die positioning plate are prevented from being rubbed to generate scratches, the processing efficiency is improved through the mechanical arm, and the production cost is reduced.
Drawings
FIG. 1 is an exploded view of the structure of the present invention;
FIG. 2 is a structural cross-sectional view of the top of the present invention;
FIG. 3 is a structural cross-sectional view of the base of the present invention;
FIG. 4 is a structural cross-sectional view of the present invention;
FIG. 5 is an enlarged view of a portion of the invention at A in FIG. 2;
FIG. 6 is a schematic view of a drawing die according to the present invention;
FIG. 7 is a schematic view of a clamping block according to the present invention.
In the figure: 1. plastic is coated; 2. plastic is discharged; 3. a positive post; 4. a housing; 5. a patch; 6. an insulating sheet; 7. a negative electrode cover plate; 8. sealing the nail; 11. a guide rod; 12. a fixed seat; 13. a mechanical arm; 14. a clamping block; 16. a lower die positioning plate; 17. and (5) a material ejecting block.
Detailed Description
To further illustrate the technical means and effects of the present invention adopted to achieve the predetermined objects, the following detailed description of the embodiments, structures, features and effects according to the present invention will be made with reference to the accompanying drawings and preferred embodiments.
Referring to fig. 1-7, the present invention provides a technical solution: a high-safety thermally-coupled extremely-simple cylindrical steel shell structure comprises an upper plastic 1, a lower plastic 2, a positive pole post 3, a shell 4, an adapter sheet 5, an insulating sheet 6, a negative pole cover plate 7 and a sealing nail 8 which are sequentially arranged from top to bottom, wherein the shell 4 is formed by stretching, the diameter is 46mm, the height is 95mm, the thickness of the bottom is 0.6mm, the wall thickness is 0.32mm, the weight of materials is reduced under the condition that the bottom and the side wall have enough strength, the energy density of a monomer can be improved, a round hole with the diameter of 16.8mm is formed in the bottom of the shell 4 and is used for penetrating through the positive pole post 3, the positive pole post 3 sequentially penetrates through the upper plastic 1, the shell 4 and the lower plastic 2 to be assembled through a hot riveting process to play a role in sealing role, the extremely-simple structure of the positive pole can meet the requirement of a positive pole function under a new hot riveting process, few parts have higher reliability, the fraction and the reject ratio and the manufacturing cost are greatly reduced, the adapter sheet 5 is welded on the negative pole cover plate 7 through spot welding, the switching piece 5 is connected with the negative electrode, the switching piece is folded in the inner cavity of the shell 4 in a bending mode, the negative electrode cover plate 7 is sealed with the shell 4 through laser welding, the insulating piece 6 is arranged between the shell 4 and the negative electrode cover plate 7 and used for avoiding potential safety hazards caused by electrolyte impact when electrolyte is injected, meanwhile, the positive electrode is also isolated from being connected with the negative electrode to play an insulating role, energy loss can be reduced through a structure with strong micro internal resistance and overcurrent of the pole, safety performance and stability are higher, the requirements of high capacity and low internal resistance of the cell are met, the cruising ability of the power lithium ion battery is improved, the overall safety performance of the battery is improved, the safety performance and stability of the electric vehicle are improved, cruising mileage is improved, the pole structure with extremely simple safety can reduce material cost and assembly processing cost, the pole structure with large cylinder and high capacity steel shell realizes that the pole of the cell shell has current input and output conduction, when the basic functions of the protection electrode, sealing and the like are realized, the assembly is extremely simple, the assembly difficulty is reduced, the product yield is improved, the waste of defective products is reduced, the material cost and the assembly cost of the battery cell pole shell are reduced, and the cost of the battery cell structural part of the power battery is greatly reduced.
Go up the material of plastic 1 and lower plastic 2 and be the PP plastic, anodal post 3 material is AL1060H14, and the material of casing 4, negative pole apron 7 and seal nail 8 is SPCC preplating board, and adaptor 5 material is CuT2, and insulating piece 6 material is PPHJ400.
The electrode diaphragm in the electric core is directly connected with the positive pole 3 in a shell-entering manner, and the high-overcurrent low-internal-resistance pole connection mode avoids potential safety hazards caused by heating of the pole lugs due to internal resistance under high current from the root.
The shell 4 is formed by a drawing process comprising the steps of:
the method comprises the following steps that firstly, stretching is carried out through a multi-station deep drawing die, and feeding is carried out through a high-speed feeding mechanical arm;
step two, when the left and right mechanical arms 13 clamp the shell 4, the stressed left and right arms and the angle action of the guide rod hole on the fixed seat 12 can lift the shell 4 to be separated from the support of the guide rod hole 17; the moving direction of the z-axis of the manipulator is reduced by the guide rod 11 in the guide rod hole on the fixed seat 12.
In the first step, the shell 4 is drawn in 3 steps and extruded to be thin in 3 steps.
The multi-station drawing die comprises a guide rod 11, a fixed seat 12, a mechanical arm 13 moving left and right and back and forth, a clamping block 14, a lower die positioning plate 16 and a material ejecting block 17; the fixed seat 12 is connected with the clamping block 14 through a guide rod 11, a equal-height sleeve and a spring.
The extremely simple safety structure of big cylinder high capacity steel casing utmost point post realizes that the electric core shell should have current input/output conduction, guard electrode and sealed when the basic function such as, the subassembly is accomplished extremely succinctly, has reduced the assembly degree of difficulty, has improved the product yields, has reduced the waste of defective products, has reduced the material cost and the assembly cost of electric core utmost point post casing, very big reduction power battery electric core structure cost.
The volume of the 4695 cylindrical battery adopting the large-cylindrical high-capacity steel-shell pole simple safety structure is 6.5 times of that of the 2170 cylindrical battery, and the energy density is improved by 23 percent + compared with 2170 due to the pole simple structure.
After the volume is increased, 3000 batteries are needed in the original new energy vehicle adopting 2170 batteries, only 500 batteries are needed at present, the number is reduced, the shell structure can be formed by a special stretching machine in a high-speed stretching mode, and the capacity cost is reduced by 14% under the same electric energy.
The large-diameter cylindrical battery cell can reduce the performance requirements on the liquid cooling heat dissipation module, and plays a great role in promoting the popularization of new energy automobiles.
Although the present invention has been described with reference to the preferred embodiments, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (6)
1. The utility model provides a high security thermal coupling utmost point simple cylinder steel-clad structure, includes last plastic (1) that sets gradually from the top down, lower plastic (2), anodal post (3), casing (4), adaptor piece (5), insulating piece (6), negative pole apron (7) and sealed nail (8), its characterized in that: the utility model discloses a lithium ion battery, including casing (4), anodal post (3) have been seted up to the bottom of casing (4) and have been used for running through anodal post (3), anodal post (3) are run through plastic (1), casing (4) and lower plastic (2) in proper order and are assembled through hot riveting technology, switching piece (5) are welded on negative pole apron (7) through spot welding, switching piece (5) link to each other with the negative pole, and fold at casing (4) inner chamber through the mode of bending, negative pole apron (7) are sealed through laser welding with casing (4), insulating piece (6) set up between casing (4) and negative pole apron (7).
2. A high safety thermally coupled minimal cylindrical steel shell structure according to claim 1, wherein: go up the material of plastic (1) and lower plastic (2) and be the PP plastic, positive post (3) material is AL1060H14, the material of casing (4), negative pole apron (7) and sealed nail (8) is the SPCC pre-plated board, adaptor piece (5) material is CuT2, insulating piece (6) material is PPHJ400.
3. A high safety thermally coupled minimal cylindrical steel shell structure according to claim 1, wherein: an electrode diaphragm in the battery cell is inserted into the shell and is directly connected with the positive pole (3).
4. A high safety thermally coupled minimal cylindrical steel shell structure according to claim 1, wherein: the shell (4) is formed by a drawing process, which comprises the following steps:
the method comprises the following steps that firstly, stretching is carried out through a multi-station drawing die, and feeding is carried out through a high-speed feeding mechanical arm;
step two, when the left mechanical arm and the right mechanical arm (13) clamp the shell (4), the shell (4) can be lifted to be separated from the support of 17 under the action of the stressed left and right sides and the angle of a guide rod hole on the fixed seat (12); the moving direction of the z axis of the manipulator is reduced by the guide rod (11) in the guide rod hole on the fixed seat (12).
5. A high safety thermally coupled simple cylindrical steel shell structure according to claim 1, wherein: in the first step, the shell (4) is subjected to drawing in 3 steps and extruding in 3 steps.
6. A high safety thermally coupled simple cylindrical steel shell structure according to claim 1, wherein: the multi-station drawing die comprises a guide rod (11), a fixed seat (12), a mechanical arm (13) moving left and right and back and forth, a clamping block (14), a lower die positioning plate (16) and a material ejecting block (17); the fixed seat (12) is connected with the clamping block (14) through a guide rod (11), an equal-height sleeve and a spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211363630.6A CN115621630A (en) | 2022-11-02 | 2022-11-02 | High-safety thermal coupling extremely-simple cylindrical steel shell structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211363630.6A CN115621630A (en) | 2022-11-02 | 2022-11-02 | High-safety thermal coupling extremely-simple cylindrical steel shell structure |
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| Publication Number | Publication Date |
|---|---|
| CN115621630A true CN115621630A (en) | 2023-01-17 |
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| CN202211363630.6A Pending CN115621630A (en) | 2022-11-02 | 2022-11-02 | High-safety thermal coupling extremely-simple cylindrical steel shell structure |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201677320U (en) * | 2010-05-04 | 2010-12-22 | 山东神工宏全模具有限公司 | Manipulator clamping and transmitting mechanism for multistation drawing metal housings |
| CN109108945A (en) * | 2018-09-26 | 2019-01-01 | 樊强 | A kind of mechanical arm of multi-faceted angular adjustment |
| CN211967516U (en) * | 2020-03-20 | 2020-11-20 | 济南尤文电气科技有限公司 | Manipulator cantilever device |
| CN214818682U (en) * | 2021-02-20 | 2021-11-23 | 阜新佰斯特机械制造有限公司 | Mechanical arm for specifically adjusting stretching mechanism |
| CN114678600A (en) * | 2022-03-02 | 2022-06-28 | 江西远东电池有限公司 | Novel cylindrical full-tab battery structure and assembly welding process thereof |
-
2022
- 2022-11-02 CN CN202211363630.6A patent/CN115621630A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201677320U (en) * | 2010-05-04 | 2010-12-22 | 山东神工宏全模具有限公司 | Manipulator clamping and transmitting mechanism for multistation drawing metal housings |
| CN109108945A (en) * | 2018-09-26 | 2019-01-01 | 樊强 | A kind of mechanical arm of multi-faceted angular adjustment |
| CN211967516U (en) * | 2020-03-20 | 2020-11-20 | 济南尤文电气科技有限公司 | Manipulator cantilever device |
| CN214818682U (en) * | 2021-02-20 | 2021-11-23 | 阜新佰斯特机械制造有限公司 | Mechanical arm for specifically adjusting stretching mechanism |
| CN114678600A (en) * | 2022-03-02 | 2022-06-28 | 江西远东电池有限公司 | Novel cylindrical full-tab battery structure and assembly welding process thereof |
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