CN103579669A - High-capacity cylindrical or square lithium ion battery - Google Patents
High-capacity cylindrical or square lithium ion battery Download PDFInfo
- Publication number
- CN103579669A CN103579669A CN201310598505.8A CN201310598505A CN103579669A CN 103579669 A CN103579669 A CN 103579669A CN 201310598505 A CN201310598505 A CN 201310598505A CN 103579669 A CN103579669 A CN 103579669A
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- Prior art keywords
- battery
- pole
- lithium ion
- electrical core
- coiling body
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- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 31
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 31
- 238000003466 welding Methods 0.000 claims description 20
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 10
- 229910052782 aluminium Inorganic materials 0.000 claims description 10
- 239000004411 aluminium Substances 0.000 claims description 5
- 238000005242 forging Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 9
- 238000004804 winding Methods 0.000 abstract description 5
- 238000007599 discharging Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000007755 gap coating Methods 0.000 description 4
- 238000005096 rolling process Methods 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 229910000679 solder Inorganic materials 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000010355 oscillation Effects 0.000 description 2
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000005030 aluminium foil Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000011889 copper foil Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000005493 welding type Methods 0.000 description 1
Images
Classifications
-
- 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
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- 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
- H01M50/147—Lids or covers
-
- 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
- H01M50/147—Lids or covers
- H01M50/148—Lids or covers characterised by their shape
- H01M50/152—Lids or covers characterised by their shape for cells 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
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/531—Electrode connections inside a battery casing
-
- 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
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/543—Terminals
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Connection Of Batteries Or Terminals (AREA)
- Secondary Cells (AREA)
Abstract
The invention discloses a high-capacity cylindrical or square lithium ion battery. The high-capacity cylindrical or square lithium ion battery comprises a shell, a cell winding body arranged in the shell, battery end covers arranged at two ends of the cell winding body, and battery pole posts arranged on the battery end covers, wherein the battery pole posts comprise a positive pole post and a negative pole post; the battery end covers comprise a positive end cover and a negative end cover; the positive lug end surface of the cell winding body is provided with one or more than two current collector pole posts; one side, corresponding to the current collector pole posts, of the positive pole post or the positive end cover is provided with one or more than two sleeve-joint holes or sleeve-joint grooves. The high-capacity cylindrical or square lithium ion battery has a simple operative surface, simplifies the assembly process of the cell winding body with the end covers and the shell, shortens the conductive distance from the current collector pole posts to the positive pole post or negative pole post of the battery, reduces the internal resistance of the battery, and reduces the heat productivity of the battery during charging and discharging.
Description
Technical field
The present invention relates to the new forms of energy technical field of chemical power relevant with storage station, the cylindrical or rectangular lithium ion battery of the large capacity used in particular for energy storage and the power of wind energy and solar energy.
Background technology
At present, along with wind energy, the fast development of solar energy, the electric energy of its generation is due to stable not, easily electrical network is produced and impacted, therefore set up corresponding storage station imperative, therefore need high capacity lithium ion battery that reliability is high for accumulation of energy, to store wind energy, the electricity ， storage station that sun the subject of knowledge and the object of knowledge produces is very high to the requirement of battery, such as high reliability and long life (more than 10 years) etc., large capacity column lithium ion battery has high-energy-density (≤130wh/kg), the advantage such as manufacturing process is simple.
But technically, large capacity column lithium ion battery is due to capacity large (>30Ah ampere-hour), pole piece is long, not too be applicable to the method manufacture with common low capacity column lithium ion battery, the positive/negative plate of existing common low capacity column lithium ion battery adopts gap coating while manufacturing, the object of gap coating is in order to weld strip lug (nickel or aluminium or copper material), if large capacity column lithium ion battery also adopts gap coating, speed is slow during pole piece roll-in, the strip lug number of required welding is many, the welding job amount at strip lug and coating clearance place is large, and need paste insulating tape, complex process, efficiency is low, capacity density is also lowered thus.Therefore large capacity column lithium ion battery pole piece is not suitable for adopting gap coating, but reserve uncoated district on paper tinsel shape collector on pole piece left or right limit, uncoated paper tinsel shape collector forms lug position end face after reeling, and the uncoated paper tinsel body effect of lug position end face is that electric current is drawn (output).
Prior art is as CN 102683634 A, 201210122201.X in the end face paper tinsel body shaping of electrical core coiling body lug position after, be welded on current collecting plates, by tab welding, to this type of welding at present of the output pole of battery, be all to be completed by laser-beam welding machine again, cost is higher, need to turn connection by lug, welding times is many, and cost is high.
Prior art is as CN 102683634 A, battery case in 201210122201.X adopts circular aluminum pipe to add that end cap and pole complete the manufacture of whole shell by welding or mechanical seal, aluminum pipe and end cap adopt High Power Laser Welding machine to weld together the effect that reaches hermetically sealed, as shown in the figure, end cap and pole adopt the fluorine-containing sealing rings such as PFA to complete encapsulation, its complex structure, and the cost of making end cap and sealing ring is high, and sealing effectiveness is also difficult to reach high yield requirement.
Between the brace of prior art Positive Poles and electric current output, by the mode with bolt and nut, fix, although adopt the mode of Anti-slip nut, but under high low temperature alternation and vibration environment, bolt and nut still can become flexible meeting sparking when having electric current output, if but use laser welding mode between Positive Poles or end cap and brace, because solder joint is little, the intensity of aluminium solder joint own is low, under vibration environment, easily at solder joint place, disconnects.
Summary of the invention
The present invention, for solving the problems of the technologies described above, provides a kind of column lithium ion battery simple in structure or rectangular lithium ion battery.
In order to realize foregoing invention object, the technical solution used in the present invention is:
A kind of large capacity column lithium ion battery, comprise shell, electrical core coiling body, the end cover for battery cells that is arranged on electrical core coiling body two ends and the battery electrode column on end cover for battery cells are in the enclosure set, described battery electrode column comprises Positive Poles and negative pole pole, described end cover for battery cells comprises anode end cap and negative pole end cap, the positive pole ear position end face of described electrical core coiling body is provided with one or more collector pole, and a described Positive Poles or anode end cap side corresponding with collector pole is provided with one or more sleeve joint hole or socket groove.
Wherein, the centre of the positive pole ear position end face of described electrical core coiling body is provided with a collector pole, described Positive Poles sleeve joint hole of a side corresponding with collector pole or socket groove.
Wherein, described shell and end cover for battery cells and battery electrode column by aluminium, once push or forging type one-body molded.
Wherein, the plus or minus utmost point lug position end face of described electrical core coiling body and the shell of battery interfix by welding.
Wherein, the plus or minus utmost point lug position end face of described electrical core coiling body and the shell of battery are connected and fixed by ultrasonic.
Wherein, the end cap of the plus or minus utmost point lug position end face of described electrical core coiling body and the shell of battery is coupled to each other fixing by laser welding.
Wherein, the plus or minus utmost point lug position end face of described electrical core coiling body and the shell of battery interfix by riveted joint or interference fit.
In order to realize foregoing invention object, another technical scheme that the present invention adopts is:
A kind of large capacity rectangular lithium ion battery, comprise shell, electrical core coiling body, the end cover for battery cells that is arranged on electrical core coiling body two ends and battery electrode column are in the enclosure set, described battery electrode column comprises Positive Poles and negative pole pole, described end cover for battery cells comprises anode end cap and negative pole end cap, the positive pole ear position end face of described electrical core coiling body is provided with one or more collector pole, and a described Positive Poles or anode end cap side corresponding with collector pole is provided with one or individual above sleeve joint hole or socket groove.
Wherein, the centre of the positive pole ear position end face of described electrical core coiling body is provided with a collector pole, described Positive Poles sleeve joint hole of a side corresponding with collector pole or socket groove.
Beneficial effect of the present invention, a Positive Poles or anode end cap side corresponding with collector pole is provided with one or individual above sleeve joint hole or socket groove, collector pole and sleeve joint hole or socket groove fit by together with laser welding, be conducive to the enforcement of laser welding, its operating surface is simple, simplified the assembling process of electrical core coiling body and end cap and housing, collector pole and the Positive Poles of battery or the conduction distance of negative pole pole shorten simultaneously, reduce the internal resistance of battery, reduced the heating of battery when discharging and recharging.
Accompanying drawing explanation
Fig. 1 is the structural representation of large capacity column lithium ion battery;
Fig. 2 is the structural representation of battery current output connecting structure in the embodiment of the present invention;
Fig. 3 is current collecting plates and shell ultra-sonic welded schematic diagram in the embodiment of the present invention;
Fig. 4 is current collecting plates and shell mechanical presses (riveted joint) schematic diagram in the embodiment of the present invention;
Fig. 5 is current collecting plates and shell interference fit schematic diagram in the embodiment of the present invention;
Fig. 6 is current collecting plates and shell machinery (slot rolling) schematic diagram in the embodiment of the present invention;
Fig. 7 is the fixing schematic diagram of current collecting plates and shell tapered pole bellmouth laser welding in the embodiment of the present invention.
Label declaration:
1, shell; 2, electrical core coiling body; 21, lug position end face; 22, collector pole; 31, anode end cap; 32, negative pole end cap; 41, Positive Poles; 42, negative pole pole; 5, brace.
Embodiment
By describing technology contents of the present invention, structural feature in detail, being realized object and effect, below in conjunction with execution mode and coordinate accompanying drawing to be explained in detail.
By describing technology contents of the present invention, structural feature in detail, being realized object and effect, below in conjunction with execution mode and coordinate accompanying drawing to be explained in detail.
See also Fig. 1, as shown in the figure, cylindrical or the rectangular lithium ion battery of the large capacity of the present invention, comprise shell 1, be arranged on the electrical core coiling body 2 in shell 1, be arranged on the end cover for battery cells at electrical core coiling body 2 two ends and the battery electrode column on end cover for battery cells, described battery electrode column comprises Positive Poles 41 and negative pole pole 42, described end cover for battery cells comprises anode end cap 31 and negative pole end cap 32, the positive pole ear position end face 21 of described electrical core coiling body 2 is provided with one or more collector pole 22, described Positive Poles 41 or anode end cap 31 side corresponding with collector pole 22 is provided with one or more sleeve joint hole or socket groove.The collector pole 22 of lug position end face 21 inserts sleeve joint hole or socket groove on Positive Poles 41 or anode end cap 31, then with laser, the seam exposing of the contact-making surface of the sleeve joint hole on collector pole 22 and Positive Poles 41 or anode end cap 31 or socket groove is welded and fixed.
In the present embodiment, the shell of battery 1 and end cover for battery cells and battery electrode column are adopted aluminium once to extrude to stretch or forging type one-body molded, make it to become one, laser welding or mechanical seal operation between shell 1 and end cap have been reduced, thereby the leakage of having avoided welding or poor sealing to cause, manufactures thus efficiency and is also improved.
Lug of the present invention position end face 21 is during due to positive/negative plate and membrane winding, negative pole is Copper Foil or the positive pole end face that limit of the aluminium foil of coating does not form of coating part not, in fact be equal to the columniform bottom surface of electrical core coiling body 2, the plus or minus utmost point lug position end face of the electrical core coiling body of lithium ion battery 2 21 and the shell 1 of battery are directly welded, this welding procedure can be that laser welding can be also ultra-sonic welded, as shown in Figure 3, by being directly welded and fixed to have reduced, between electrical core coiling body 2 and pole, with turning of flow collection sheet or lug, connect operation, improved manufacture efficiency, reduced the internal resistance of battery, improved the discharging efficiency of battery, for realizing the plus or minus utmost point lug position end face of electrical core coiling body 2 of lithium ion battery and the shell of battery, directly weld, adopted the paper tinsel body of lug position end face 21 has been carried out to the higher-order of oscillation, and exert pressure, the paper tinsel body of the lug position end face of higher-order of oscillation moment is by softening, make the paper tinsel body of the lug position end face 21 of described electrical core coiling body 2 both positive and negative polarities be compressed and reduce 0.1-6.5 millimeter respectively, the paper tinsel body of lug position end face 21 tangles mutually.
The present invention is for easily becoming flexible and solder joint place disconnection problem between solution Positive Poles and the brace of electric current output, as shown in Figure 2, described battery electrode column comprises Positive Poles 41 and negative pole pole 42, described end cover for battery cells comprises anode end cap 31 and negative pole end cap 32, to between Positive Poles 41 and the brace 5 of electric current output, use riveting, and syndeton and the method for the new electric current output simultaneously by laser welding mode, brace 5 and end cap or pole being welded together.
In the present embodiment, the plus or minus utmost point lug position end face 21 of the electrical core coiling body 2 of the cylindrical or rectangular lithium ion battery of the large capacity of the present invention is not to fix by welding with the shell 1 of battery, but is fixed by riveting method or interference fit.Described riveting method is the mode of mechanical presses, as shown in Figure 4; Described interference fit is outer through than large 12 of the internal diameter of aluminum hull (aluminum pipe) (120 microns) due to by current collecting plates, to shell, heating is expanded it, to current collecting plates liquid nitrogen cooling, it is shunk, then packs current collecting plates and coiling body into aluminum hull, can realize interference fit, as shown in Figure 5.Two kinds of fixed forms between described current collecting plates and shell, are a kind ofly: at shell in garden Zhou Shangyong machinery slot rolling mode, slot rolling on shell, the interior recess after slot rolling pushes current collecting plates, making it has good contacting with end cap, as shown in Figure 6.Another kind is: on current collecting plates, make a taper pillar, make bellmouth on end cap, the tapered pole of current collecting plates and the bellmouth on end cap are fixed, then fix by laser welded seal, as shown in Figure 7.
The foregoing is only embodiments of the invention; not thereby limit the scope of the claims of the present invention; every equivalent structure or conversion of equivalent flow process that utilizes specification of the present invention and accompanying drawing content to do; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (9)
1. a large capacity column lithium ion battery, it is characterized in that: comprise shell, electrical core coiling body is in the enclosure set, be arranged on the end cover for battery cells at electrical core coiling body two ends and the battery electrode column on end cover for battery cells, described battery electrode column comprises Positive Poles and negative pole pole, described end cover for battery cells comprises anode end cap and negative pole end cap, the positive pole ear position end face of described electrical core coiling body is provided with one or more collector pole, a described Positive Poles or anode end cap side corresponding with collector pole is provided with one or more sleeve joint hole or socket groove.
2. large capacity column lithium ion battery according to claim 1, it is characterized in that: the centre of the positive pole ear position end face of described electrical core coiling body is provided with a collector pole described Positive Poles sleeve joint hole of a side corresponding with collector pole or socket groove.
3. large capacity column lithium ion battery according to claim 1, is characterized in that: described shell and end cover for battery cells and battery electrode column by aluminium, once push or forging type one-body molded.
4. large capacity column lithium ion battery according to claim 3, is characterized in that: the plus or minus utmost point lug position end face of described electrical core coiling body and the shell of battery interfix by welding.
5. large capacity column lithium ion battery according to claim 4, is characterized in that: the plus or minus utmost point lug position end face of described electrical core coiling body and the shell of battery are connected and fixed by ultrasonic.
6. large capacity column lithium ion battery according to claim 4, is characterized in that: the end cap of the plus or minus utmost point lug position end face of described electrical core coiling body and the shell of battery is coupled to each other fixing by laser welding.
7. large capacity column lithium ion battery according to claim 3, is characterized in that: the plus or minus utmost point lug position end face of described electrical core coiling body and the shell of battery interfix by riveted joint or interference fit.
8. a large capacity rectangular lithium ion battery, it is characterized in that: comprise shell, electrical core coiling body, the end cover for battery cells that is arranged on electrical core coiling body two ends and battery electrode column are in the enclosure set, described battery electrode column comprises Positive Poles and negative pole pole, described end cover for battery cells comprises anode end cap and negative pole end cap, the positive pole ear position end face of described electrical core coiling body is provided with one or more collector pole, and a described Positive Poles or anode end cap side corresponding with collector pole is provided with one or individual above sleeve joint hole or socket groove.
9. large capacity rectangular lithium ion battery according to claim 8, it is characterized in that: the centre of the positive pole ear position end face of described electrical core coiling body is provided with a collector pole described Positive Poles sleeve joint hole of a side corresponding with collector pole or socket groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310598505.8A CN103579669B (en) | 2013-11-22 | 2013-11-22 | A kind of high-capacity cylindrical or rectangular lithium ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310598505.8A CN103579669B (en) | 2013-11-22 | 2013-11-22 | A kind of high-capacity cylindrical or rectangular lithium ion battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103579669A true CN103579669A (en) | 2014-02-12 |
| CN103579669B CN103579669B (en) | 2015-08-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310598505.8A Expired - Fee Related CN103579669B (en) | 2013-11-22 | 2013-11-22 | A kind of high-capacity cylindrical or rectangular lithium ion battery |
Country Status (1)
| Country | Link |
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| CN (1) | CN103579669B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105428088A (en) * | 2015-12-18 | 2016-03-23 | 天津力神电池股份有限公司 | Supercapacitor |
| CN107482156A (en) * | 2017-08-29 | 2017-12-15 | 陈育雄 | A kind of polymeric monomer lithium ion battery |
| CN112582755A (en) * | 2019-09-30 | 2021-03-30 | 比亚迪股份有限公司 | Battery module |
| CN113991186A (en) * | 2021-10-29 | 2022-01-28 | 蜂巢能源科技(无锡)有限公司 | Battery assembly method and lithium battery |
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2013
- 2013-11-22 CN CN201310598505.8A patent/CN103579669B/en not_active Expired - Fee Related
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105428088A (en) * | 2015-12-18 | 2016-03-23 | 天津力神电池股份有限公司 | Supercapacitor |
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| CN112582755A (en) * | 2019-09-30 | 2021-03-30 | 比亚迪股份有限公司 | Battery module |
| CN113991186A (en) * | 2021-10-29 | 2022-01-28 | 蜂巢能源科技(无锡)有限公司 | Battery assembly method and lithium battery |
| CN113991186B (en) * | 2021-10-29 | 2023-10-27 | 蜂巢能源科技(无锡)有限公司 | Battery assembly method and lithium battery |
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| Publication number | Publication date |
|---|---|
| CN103579669B (en) | 2015-08-05 |
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