CN113241491A - Group structure of series connection between cylindrical battery rows - Google Patents
Group structure of series connection between cylindrical battery rows Download PDFInfo
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- CN113241491A CN113241491A CN202110622534.8A CN202110622534A CN113241491A CN 113241491 A CN113241491 A CN 113241491A CN 202110622534 A CN202110622534 A CN 202110622534A CN 113241491 A CN113241491 A CN 113241491A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The invention provides a group structure for series connection among cylindrical battery rows, which comprises a plurality of rows of battery rows arranged in a matrix manner, wherein thin series busbars are arranged on top poles and bottom poles of adjacent battery rows, the series busbars at the top and the bottom are arranged in parallel and sequentially, each series busbar comprises two groups of parallel long edges, two ends of each long edge are provided with turnover parts, a plurality of crown-wearing cold welding structures are arranged on the long edges of each series busbar, reinforcing beams are arranged on all the opposite crown-wearing cold welding structures on the long edges of each row, at least three fastening mechanisms are arranged between the reinforcing beams corresponding to the top and the bottom of each group, and a three-dimensional grid structure in a module is formed through integral rapid light curing of structural adhesive, so that the original support structure is replaced, and the volume of the module is reduced by more than 10%; meanwhile, because the clearance between the primary battery and the bracket is eliminated, the shock resistance of the module is greatly improved.
Description
Technical Field
The invention relates to the field of new energy batteries, in particular to a grouping structure for serially connecting cylindrical battery rows.
Background
At the present stage, the energy density of the single power battery is on a trend of increasing, the requirements on the contact resistance and the thermal influence of the single power battery electrically connected with the bus bar are decreasing, and the requirements on the overcurrent capacity of the welding spot of the bus bar are increasing. Increasing the contact area of the electric connection welding spots, improving the electric flux, maintaining the stability of the welding spots, requiring the bus bar to be widened and thickened, improving the overcurrent capacity and the soaking capacity and the like are always the efforts in the industry; the volume energy density of the structure is required to be higher and higher, and the strength and the stability of the whole structure are required to be higher and higher. Therefore, reduction of structural volume and enhancement of seismic capacity have been the direction of efforts in the industry.
The structure of the power batteries which are linearly arranged in parallel and are connected in series between rows is the main form of the structure for the electric two-wheel and the electric tool, and has wide demonstration significance. The industry currently adopts the spot welding process to carry out electric connection, and spot-by-spot welding has extremely low production efficiency, often appears the rosin joint, the false solder phenomenon and can't detect on line, is a big pain point in the industry. In addition, as shown in fig. 1 and fig. 2, the battery is in two top pressure relief forms of the existing cylindrical battery, the top of the cylindrical battery in fig. 1 is designed to be an arched end cover, and the periphery of the end cover is provided with pressure relief holes; FIG. 2 shows an end cap design with a pressure relief point in the center and a radial shallow cut around the pressure relief point. In any design, when the single battery is out of control thermally, the flame needs to be sprayed upwards from the top of the battery. At present, the bus bar is not provided with a through hole, and the sprayed flame easily causes the bus bar to be overheated and reflects the flame, so that a large amount of heat is spread to peripheral batteries, and the continuous thermal runaway of the peripheral batteries is easily caused. The problem of isolating thermal spread is a difficult problem to be solved urgently by a power battery grouping technology.
Disclosure of Invention
In order to solve the technical problem, the invention provides a group structure for series connection among cylindrical battery rows, which comprises a plurality of rows of battery structures arranged in a matrix manner, wherein each row of battery structure comprises a plurality of cylindrical batteries arranged in the same direction, each cylindrical battery comprises a top pole, a bottom pole and a side shell, an insulating layer is arranged on each side shell, adjacent row of battery structures are arranged in a reverse manner, thin series busbars are pressed on the top poles and the bottom poles of the adjacent row of battery structures respectively, each series busbar comprises two groups of parallel long edges, and the upper series busbars and the lower series busbars are arranged in a staggered manner;
folding parts are integrally formed at two ends of the long edge, and the folding parts are respectively pressed at two ends of the adjacent rows of battery structures to fix the space between the two ends of the rows of battery structures; short edges are integrally formed between at least one group of parallel folding parts, and the short edges and the folding parts are pressed and adhered to the side surface shells of the cylindrical batteries in adjacent rows and are used for fixing the space between the battery structures in the adjacent rows;
a plurality of crown-wearing cold welding structures are arranged on the long edge and are electrically connected to the top pole and the bottom pole of the corresponding cylindrical battery respectively, so that inter-row series connection of adjacent rows of cylindrical batteries and in-row parallel connection of the cylindrical batteries in the same row are formed;
reinforcing beams are arranged on all the opposite crown-wearing cold welding structures on the long edges of each row;
at least three fastening mechanisms are arranged between the reinforcing beams corresponding to the top and the bottom of the group, and all the fastening mechanisms are locked to form rapid and reliable serial-parallel electric connection between all the top poles and all the bottom poles at the top and the bottom.
Preferably, at least two first structural adhesives are arranged between the adjacent side shells to form an insulation gap.
Preferably, the crown-wearing cold welding structure comprises a through hole, a lower flanging, electric connection claws, cold welding glue and second structure glue, wherein the center point of the through hole corresponds to the center point or the pressure relief hole of an end cover of the cylindrical battery, the lower part of the through hole is provided with the lower flanging, the electric connection claws are arranged on the lower part of the lower flanging in an annular mode, the electric connection claws are bent outwards and are electrically connected with the top pole columns or the bottom pole columns below in a filling mode through the cold welding glue, and at least three second structure glue are arranged at the annular junction of the inner edge of the lower part of the lower flanging and the top pole columns or the bottom pole columns.
Preferably, the folding part with the intersection of minor face with correspond through insulating piece bonding connection between the side casing, the insulating piece is in the elasticity bubble cotton or highland barley paper or rubber products, the insulating piece both sides are equipped with the gum.
Preferably, the reinforcing beam is an insulating anti-bending strip member and is bonded to the upper portion of the crown cold welding structure adjacent to all rows.
Preferably, the fastening mechanism is annularly sleeved on the upper reinforcing beam and the lower reinforcing beam, and the fastening mechanism comprises one of an annular heat-shrinkable film, an insulating cable tie or an insulating fastening rope.
Preferably, the lower parts of all the reinforcing beams at the bottom are connected with a bottom surface fixing sheet through a third structural adhesive.
Preferably, the cylindrical battery of the first row and the last row is provided with an end fixing sheet between the side shells, and the end fixing sheet and all the corresponding end fixing sheets are provided with a fourth structural adhesive between the side shells.
Preferably, the first row and the last row are not provided with the serial bus bars, and the top pole or the bottom pole are respectively provided with an external top pole bus bar or an external bottom pole bus bar in a single strip shape.
Preferably, transparent packing belts are fastened on the side surface shells of all the outer cylindrical batteries, and fifth structural adhesive is arranged between the transparent packing belts and the side surface shells.
The grouping structure for the serial connection of the cylindrical battery rows provided by the invention has the following beneficial effects: 1. the integral rapid light curing of the structural adhesive forms a three-dimensional grid structure in the structure, replaces the original support structure, and reduces the structure volume by more than 10%; meanwhile, the structural adhesive eliminates the gap between the primary battery and the bracket, and all batteries are in a compacted state, so that the shock resistance of the structure is greatly improved.
2. The short edge of the bus bar is bent downwards, which is not only a series current path, but also an inter-row fixing piece. The outside battery of whole structure forms stable rigid frame, and structural strength promotes, and the cost descends.
3. The fastening structure locks and keeps the pressure of the contact surface between the serial bus bar and the battery pole column, the defect of insufficient drawing force of the gluing process is overcome, and the stability of the electric connection cold welding spot is greatly improved.
4. The electric connection and the structural sealing are both operated without heat, so that the hidden danger of thermal injury is thoroughly eliminated.
5. Many top busbars and many bottom busbars can carry out quick cold welding to the structure simultaneously two sides, and the overall structure solid seal time of electricity connection does not exceed 20 seconds, compares in the pointwise electricity connection technology of hot welding, and production efficiency promotes at least 10 times.
6. The barrier of the eruption channel is eliminated by the cavity of the bus bar at the pressure relief opening above the pole, the heat influence on the peripheral battery is greatly reduced, and the overall safety of the structure is greatly improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below.
FIG. 1 is a schematic diagram of a prior art cylindrical battery;
FIG. 2 is a schematic diagram of another prior art arrangement of pressure relief points for a cylindrical battery;
FIG. 3 is a cross-sectional view of a series bus connection of a row of cells configuration of the present invention;
FIG. 4 is a schematic view of a crown cold welding configuration of the present invention;
FIG. 5 is a side schematic view of a ganged configuration of cylindrical battery rows connected in series according to the present invention;
FIG. 6 is a schematic view of the assembly of the series bus bars on top of the ganged configuration of the series connection between cylindrical battery rows of the present invention;
FIG. 7 is an assembled view of the series bus bars at the bottom of the ganged structure of the series connection between cylindrical battery rows of the present invention;
FIG. 8 is a schematic view of a serial bus having a short side according to the present invention;
FIG. 9 is a schematic view of a tandem bus bar of the present invention having two short sides;
FIG. 10 is a side view of a serial bus of the present invention;
FIG. 11 is an assembled schematic view of the transparent strapping band of the present invention;
wherein, 1, a cylindrical battery; 2. a top pole column; 3. a bottom pole column; 4. a side housing; 5. an insulating layer; 6. a serial bus; 7. a long side; 8. a short side; 9. a folding part; 10. a crown-wearing cold welding structure; 11. a through hole; 12. connecting a power claw; 13. downward flanging; 14. cold welding glue; 15. a second structural adhesive; 16. a reinforcing beam; 17. a fastening mechanism; 18. a first structural adhesive; 19. an insulating sheet; 20. a bottom surface fixing sheet; 21. a third structural adhesive; 22. an end face fixing piece; 23. fourth structural adhesive; 24. an external top pole busbar; 25. an external bottom pole busbar; 26. a junction; 27. fifth structural adhesive; 28. a transparent packing belt.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
As shown in fig. 3, the present invention provides a group structure of cylindrical battery rows connected in series, which includes a plurality of rows of battery structures arranged in a matrix, where the row of battery structures includes a plurality of cylindrical batteries 1 arranged in the same direction, the cylindrical batteries 1 include top terminals 2, bottom terminals 3, and side housings 4, the side housings 4 are provided with insulating layers 5, the arrangement in the same direction means that the top terminals 2 of all the cylindrical batteries 1 are on the same side, the adjacent rows of battery structures are arranged in a reverse direction, and the arrangement in the reverse direction means that the top terminals 2 of one row of battery structures are upward, and then the bottom terminals 3 of the adjacent rows of battery structures are upward. Be provided with a slim series busbar 6 on top utmost point post 2 and the bottom utmost point post 3 of adjacent in bank battery structure, top and bottom series busbar 6 parallel arranges in proper order, series busbar 6 includes long limit 7 of two sets of parallels, long limit 7 both ends are equipped with folding portion 9, correspond long limit 7 staggered arrangement sets up, and the explanation is set up to "staggered arrangement" here: in this embodiment, a five-row battery structure is exemplified, but not limited to 5 rows, which may be 3 rows, 4 rows, 6 rows, and 7 rows … …, when the top serial bus 6 is pressed on the first and second rows and the third and fourth rows of battery structures, respectively, the bottom serial bus 6 is pressed on the bottoms of the second and third rows and the fourth and fifth rows of battery structures, respectively, to realize serial connection between different rows, and the top terminal 2 or the bottom terminal 3 of the cylindrical battery 1 of the row of battery structures in the first row and the last row is provided with an external top terminal bus 24 or an external bottom terminal bus 25, respectively, specifically: the top and bottom must have a row of rows of cell structures with either the top or bottom poles empty, i.e.: set up a linear type external top utmost point post busbar 24 on all top utmost point posts 2 of the cylindrical battery 1 of the fifth row of row battery structure at top, set up a linear type external bottom utmost point post busbar 25 on the bottom utmost point post 3 of the first row of row battery structure of bottom, of course, if what the series connection busbar 6 at top connected is second and third row and fourth and fifth row of row battery structure, set up external top utmost point post busbar 24 on the top utmost point post 2 of its first row of row battery utmost point post then, it is first that same bottom series connection busbar 6 connects, the second is arranged with the third, the fourth row, then the fifth row is connected to external bottom utmost point post busbar 25.
A first structural adhesive 18 is disposed between the side casings 4 of all the adjacent cylindrical batteries 1, and the structural adhesives referred to herein and hereinafter are non-thermal triggering quick-setting adhesives, which are respectively named as "first and second … …" for distinguishing different positions, and there are at least two first structural adhesives 18 between the adjacent side casings 4; the integral rapid light curing of the first structural adhesive 18 is performed, so that a three-dimensional grid structure in the module is formed, the original support structure is replaced, and the volume of the module is reduced by more than 10%; meanwhile, due to the arrangement of the first structural adhesive 18, gaps are formed between the outer walls of the batteries, namely insulation is formed, when the first structural adhesive 18 is completely filled between the cylindrical batteries 1, the structural adhesive is made of an insulating material, electrical isolation is formed, and meanwhile, all the batteries are in a tight extrusion state, so that the shock resistance of the module is greatly improved.
As shown in fig. 8, 9, and 10, the serial bus bar 6 includes two sets of parallel long sides 7, and the two ends of the long sides 7 are provided with folded portions 9, and the folded portions 9 are respectively pressed against the two ends of the adjacent row of battery structures to limit the outer side structures at the two ends of the row of battery structures; short edges 8 are electrically connected between at least one group of parallel folding parts 9, as shown in fig. 5, the short edges 8 and the folding parts 9 are pressed and stuck on the side shell 4 of the cylindrical batteries 1 in the adjacent row, and the short edges can be connected with a current path in series and also form an inter-row fixing sheet. The outside battery of whole module forms stable rigid frame, and module structural strength promotes, and the cost descends. The serial bus 6 can be formed into a U-shaped structure or a rectangular structure through punch forming, both ends of the serial bus are turned downwards to form a turning part 9 and a short edge 8, the short edge 8 can also be welded between two long-strip-shaped buses, and the structural stability is better when the short edges 8 are arranged on both sides.
In addition, in order to prevent that the structure from constantly vibrating in the use, causing the insulating layer 5 of battery lateral wall damaged, cause the short circuit, set up insulating piece 19 between the intersection 26 of minor face 8 and turnover portion 9 and the lateral wall of cylindrical battery 1 very much, insulating piece 19 is one of elasticity bubble cotton or highland barley paper or rubber products, insulating piece 19 both sides are equipped with the gum, and it is fixed through the gum bonding.
The long edge 7 of the serial bus bar 6 is provided with a plurality of crown-wearing cold welding structures 10 in a row, the crown-wearing cold welding structures 10 are respectively and electrically connected to the top pole 2 and the bottom pole 3 corresponding to the cylindrical battery 1 to form row-to-row serial connection of adjacent row-to-row battery structures and parallel connection of the cylindrical batteries 1 in the same row-to-row battery structure, as shown in fig. 3 and 4, the crown-wearing cold welding structure 10 comprises a through hole 11, a lower flanging 13, electric connection claws 12, cold welding glue 14 and second structure glue 15, the through hole 11 is made by a flanging process, the lower flanging 13 is positioned at the lower part of the through hole 11, the lower flanging 13 is subjected to secondary flanging to form an upward flanging, deep notches are annularly arranged on the upper flanging to form the electric connection claws 12, the electric connection claws 12 are outwards bent and are electrically connected with the cold welding glue 14 filled between the top pole 2 or the bottom pole 3 below, cold welding glue 14 has high electric conductivity and can low temperature solidification, guarantees to connect and connects the inseparable electricity between electric claw 12 and each cylindrical battery 1 and be connected, down turn-ups 13 lower part the inward flange with the annular juncture of top utmost point post 2 or bottom utmost point post 3 is equipped with at least three second structure glues 15, and second structure glue 15 then can further increase the fastening nature of wearing between hat cold welding structure 10 and the cylindrical battery 1, wears 11 central points of through-hole and the end cover central point or the pressure release hole of hat cold welding structure 10 and corresponds, when battery thermal runaway back, when central point or pressure release point flaming, can follow through-hole 11 and spout, compare current busbar, can not push down the flame spot, has eliminated the obstacle of eruption passageway, reduces the thermal influence of peripheral battery by a wide margin, and the whole security of structure promotes by a wide margin.
In addition, it should be noted that the serial bus bar with the crown cold welding structure 10 is more convenient for assembly with the cylindrical battery 1, the existing method is to fix the bus bar by spot welding one by one, the efficiency is lower, after the crown cold welding structure 10 is arranged, only the crown cold welding structure 10 needs to be aligned to the top or the bottom of the battery, and can be pressed and fixed at the same time, and then is rapidly cured by the spot cold welding glue 14 and the second structural glue 15, the cold welding glue 14 is cold welding glue cured at normal temperature, the second structural glue 15 can be UV glue, and can be rapidly cured after irradiation, the sealing time of the whole electrically connected structure is not more than 20 seconds, compared with the point-by-point electrical connection process of hot welding, the production efficiency is improved by at least 10 times, in addition, as shown in fig. 6 and 7, for the thin serial bus bar 6, because the strength is lower, when two ends are pressed at the same time, the middle will be tilted and the like, therefore, a continuous reinforcing beam 16 is arranged above the crown-wearing cold welding structure 10 opposite to each row of the long edges 7, the reinforcing beam 16 is an insulated bending-resistant strip-shaped member and is bonded and pressed between all the rows adjacent to the upper part of the crown-wearing cold welding structure 10, the narrow surface of the reinforcing beam 16 faces upwards to prevent the through hole 11 of the crown-wearing cold welding structure 10 from being blocked, at least two fastening mechanisms 17 are arranged at the positions between the reinforcing beams 16 corresponding to the top and the bottom of a group, the fastening mechanisms 17 are sleeved on the upper reinforcing beam and the lower reinforcing beam, the fastening mechanisms 17 comprise one of annular heat-shrinkable films or insulating bands or insulating fastening ropes, the reinforcing beam 16 is respectively arranged on the upper serial bus 6 and the lower serial bus 6 and can be tensioned through the fastening mechanisms 17 to tension the upper serial bus 6 and the lower serial bus 6, and form quick and reliable serial and electric connection between all the top poles 2 and the bottom poles 3, the fastening structure locks and keeps the pressure of the contact surface between the rigid bus bar and the battery pole column, the defect of insufficient drawing force of the gluing process is overcome, and the stability of the electric connection cold welding spot is greatly improved.
In addition, as shown in fig. 3, 6 and 7, a bottom fixing plate 20 is connected to the bottom of the whole module through a third structural adhesive 21, that is, the lowest reinforcing beam 16 is connected to the ground fixing plate through the third structural adhesive 21, the third structural adhesive 21 is completely coated on the bottom fixing plate 20, the supporting force of the whole structure in the longitudinal direction can be reinforced through the bottom fixing plate 20, in order to further reinforce the external strength of the whole structure, an end fixing plate 22 is arranged between the outermost side housings 4 of the first row and the last row of the rows of the cell structures, and a fourth structural adhesive 23 is arranged between the end fixing plate 22 and all the corresponding side housings 4, so that the whole structure is more compact.
Of course, another way of externally fixing the monolithic structure is: as shown in fig. 11, a transparent packing tape 28 is fastened on the side casing of all the outer cylindrical batteries 1, a fifth structural adhesive 27 is provided between the transparent packing tape 28 and the side casing 4, and an external integral stable structure can be formed by the transparent packing tape 28.
Claims (10)
1. The utility model provides a battery pack of establishing ties between cylindrical battery row, includes the in bank battery structure of a plurality of rows matrix arrangements, the in bank battery structure includes a plurality of cylindrical batteries (1) that set up in the same direction, cylindrical batteries (1) include top utmost point post (2), bottom utmost point post (3) and side casing (4), be equipped with insulating layer (5) on side casing (4), adjacent row the in bank battery structure sets up in reverse, press a slim series busbar (6) respectively on adjacent row the top utmost point post (2) and the bottom utmost point post (3) of in bank battery structure, series busbar (6) include two sets of parallel long limits (7), upper portion and lower part relative series busbar (6) staggered arrangement, its characterized in that,
folding parts (9) are integrally formed at two ends of the long edge (7), and the folding parts (9) are respectively pressed at two ends of the adjacent rows of battery structures and used for fixing the distance between the two ends of the rows of battery structures; short edges (8) are integrally formed among at least one group of parallel folding parts (9), and the short edges (8) and the folding parts (9) are pressed and stuck on the side shell (4) of the cylindrical batteries (1) in adjacent rows and are used for fixing the space between the battery structures in adjacent rows;
a plurality of crown-wearing cold welding structures (10) are arranged on the long edge (7) in an array manner, the crown-wearing cold welding structures (10) are respectively and electrically connected to the top pole (2) and the bottom pole (3) of the corresponding cylindrical battery (1), so that inter-row series connection of adjacent rows of cylindrical batteries (1) is formed, and intra-row parallel connection of the cylindrical batteries (1) in the same row is formed;
reinforcing beams (16) are arranged on all the opposite crown-wearing cold welding structures (10) on each row of long sides (7);
at least three fastening mechanisms (17) are arranged between the reinforcing beams (16) corresponding to the top and the bottom of the group, and all the fastening mechanisms (17) are locked to form rapid and reliable serial-parallel electric connection between all the top poles (2) and all the bottom poles (3) at the top and the bottom.
2. The assembly of cylindrical battery rows connected in series according to claim 1, wherein at least two first structural glues (18) are disposed between adjacent side cases (4) to form an insulation gap.
3. The cylindrical battery row-to-row serial unitized structure of claim 1, the crown-wearing cold welding structure (10) comprises a through hole (11), a lower flanging (13), a power connection claw (12), cold welding glue (14) and second structural glue (15), the central point of the through hole (11) corresponds to the central point of the end cover of the cylindrical battery (1) or the pressure relief hole, the lower part of the through hole (11) is provided with the lower flanging (13), the lower part of the lower flanging (13) is annularly provided with the electric connection claws (12), the electric connection claws (12) are bent outwards, and is filled with the cold welding glue (14) between the top pole (2) or the bottom pole (3) below to form electric connection, and at least three second structural adhesives (15) are arranged at the annular junction of the inner edge of the lower part of the lower flanging (13) and the top pole (2) or the bottom pole (3).
4. The cylindrical battery row-to-row serial connection grouping structure of claim 1, wherein the intersection (26) of the folded part (9) and the short side (8) is connected with the corresponding side shell (4) through an insulating sheet (19) in a bonding manner, the insulating sheet (19) is one of elastic foam or highland barley paper or rubber products, and two sides of the insulating sheet (19) are provided with back glue.
5. The structure of a battery pack in series between rows of cylindrical cells as claimed in claim 1, wherein the reinforcing beams (16) are insulated, anti-bending bars bonded to all rows adjacent to the upper portion of the crown cold welded structure (10).
6. The cylindrical battery row-to-row series connection grouping structure of claim 1, wherein the fastening mechanism (17) is looped around the upper and lower reinforcing beams (16), and the fastening mechanism (17) comprises one of a ring-shaped heat shrink film or an insulated cable tie or an insulated fastening rope.
7. The cylindrical battery row-to-row serial connection grouping structure of claim 1, wherein a bottom surface fixing sheet (20) is connected to the lower portion of all the reinforcing beams (16) at the bottom by a third structural adhesive (21).
8. The battery pack structure of cylindrical battery rows connected in series according to claim 1, wherein an end fixing piece (22) is provided between the side cases (4) of the first row and the last row of the cylindrical batteries (1), and a fourth structural adhesive (23) is provided between the end fixing piece (22) and all the corresponding side cases (4).
9. The set of cylindrical battery rows connected in series according to claim 1, characterized in that on the top poles (2) or the bottom poles (3) of the first row and the last row not provided with a serial busbar (6), there are provided respectively an external top pole busbar (24) or an external bottom pole busbar (25) in the form of a single strip.
10. The battery pack structure of claim 1, wherein the side casing (4) of all the outer cylindrical batteries (1) is fastened with a transparent packing tape (28), and a fifth structural adhesive (27) is disposed between the transparent packing tape (28) and the side casing (4).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110611594X | 2021-06-02 | ||
| CN202110611594 | 2021-06-02 |
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| CN113241491A true CN113241491A (en) | 2021-08-10 |
| CN113241491B CN113241491B (en) | 2024-06-25 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114300810A (en) * | 2021-08-27 | 2022-04-08 | 嘉兴模度新能源有限公司 | Battery pack, battery pack and manufacturing method thereof |
| CN114421095A (en) * | 2022-03-30 | 2022-04-29 | 嘉兴模度新能源有限公司 | Battery pole parallel electric connection structure, parallel battery row, battery pack and manufacturing method thereof |
| CN114597722A (en) * | 2021-12-17 | 2022-06-07 | 杭州多宝电子有限公司 | Annular busbar assembly |
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| WO2024008558A1 (en) * | 2022-07-04 | 2024-01-11 | Mercedes-Benz Group AG | Battery module having multiple individual battery cells |
| WO2024008557A1 (en) * | 2022-07-04 | 2024-01-11 | Mercedes-Benz Group AG | Battery module having multiple individual battery cells |
| CN115172981A (en) * | 2022-07-29 | 2022-10-11 | 嘉兴模度新能源有限公司 | Self-locking bulk battery unit |
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